CN116711271A - Wireless communication method, terminal device and network device - Google Patents

Abstract

A method of wireless communication, a terminal device and a network device, the method comprising: the method comprises the steps that in a first calibration window, the terminal equipment calibrates correlation among a plurality of transmitting paths of the terminal equipment; and the terminal equipment performs data transmission based on the calibrated correlation of the plurality of transmitting paths. By calibrating the correlation of the multiple transmitting paths of the terminal equipment based on the calibration window, the correlation among the multiple transmitting paths is improved, and further, the correlation MIMO transmission can be carried out based on the multiple transmitting paths with correlation, thereby being beneficial to improving the uplink transmission performance of the terminal equipment.

Description

Wireless communication method, terminal device and network device technical field

The embodiments of the present application relate to the communication field, and in particular to a wireless communication method, a terminal device, and a network device.

Background technique

For a terminal with multiple transmit antennas, the uplink can support Multiple Input Multiple Output (Multiple Input Multiple Output, MIMO) multi-stream transmission. Uplink MIMO includes codebook-based MIMO transmission and non-codebook-based MIMO transmission. For codebook-based MIMO transmission, codebooks are generally classified into fully coherent (full coherent) codebooks, partially coherent (partial coherent) codebooks, and non-coherent (non-coherent) codebooks.

In practical applications, terminal equipment will work in many scenarios, such as high temperature, low temperature, high voltage, low voltage and other different environments. Therefore, it is difficult for a terminal device to maintain a fully correlated MIMO transmission capability, which affects the performance of the terminal device. Therefore, how to maintain correlated MIMO transmission to improve the performance of the terminal device is an urgent problem to be solved.

Contents of the invention

The present application provides a wireless communication method, a terminal device, and a network device. The terminal device calibrates the correlation of multiple transmission paths based on the calibration window, so that correlated MIMO transmission can be performed through multiple transmission paths with correlation. It is beneficial to improve the uplink transmission performance of the terminal equipment.

In a first aspect, a wireless communication method is provided, including: a terminal device calibrates the correlation among multiple transmission channels of the terminal device in a first calibration window; Data transmission is carried out based on the correlation of the above-mentioned multiple transmission paths.

In a second aspect, a wireless communication method is provided, including: a network device receiving a calibration window request sent by a terminal device, where the calibration window request is used to request the network device to configure a first calibration window, and the first calibration window The method is used for the terminal device to calibrate the correlation among multiple transmission paths of the terminal device; and the network device configures a first calibration window for the terminal device.

In a third aspect, a terminal device is provided, configured to execute the method in the foregoing first aspect or various implementation manners thereof.

Specifically, the terminal device includes a functional module for executing the method in the above first aspect or its various implementation manners.

In a fourth aspect, a network device is provided, configured to execute the method in the foregoing second aspect or various implementation manners thereof.

Specifically, the network device includes a functional module for executing the method in the above second aspect or each implementation manner thereof.

In a fifth aspect, a terminal device is provided, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above first aspect or its various implementations.

A sixth aspect provides a network device, including a processor and a memory. The memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the above second aspect or its various implementations.

In a seventh aspect, a chip is provided for implementing any one of the above first aspect to the second aspect or the method in each implementation manner thereof.

Specifically, the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the device executes any one of the above-mentioned first to second aspects or any of the implementations thereof. method.

In an eighth aspect, there is provided a computer-readable storage medium for storing a computer program, and the computer program causes a computer to execute any one of the above-mentioned first to second aspects or the method in each implementation manner thereof.

A ninth aspect provides a computer program product, including computer program instructions, the computer program instructions cause a computer to execute any one of the above first to second aspects or the method in each implementation manner.

In a tenth aspect, a computer program is provided, which, when running on a computer, causes the computer to execute any one of the above-mentioned first to second aspects or the method in each implementation manner.

Therefore, the terminal device calibrates the correlation of the multiple transmission paths of the terminal device based on the calibration window, which improves the correlation between the multiple transmission paths, and can further perform correlated MIMO transmission based on the multiple transmission paths with correlation. , which is beneficial to improving the uplink transmission performance of the terminal device.

Description of drawings

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a terminal device with two transmission paths.

Fig. 3 is a schematic interaction diagram of a wireless communication method provided according to an embodiment of the present application.

Fig. 4 is a schematic diagram of MIMO self-calibration according to an embodiment of the present application.

FIG. 5 is a schematic diagram of a calibration window according to an embodiment of the present application.

Fig. 6 is a schematic diagram of a calibration window according to another embodiment of the present application.

Fig. 7 is a schematic interaction diagram of a wireless communication method according to an embodiment of the present application.

Fig. 8 is a schematic interaction diagram of a wireless communication method according to another embodiment of the present application.

Fig. 9 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.

Fig. 10 is a schematic block diagram of a network device provided according to an embodiment of the present application.

Fig. 11 is a schematic block diagram of a communication device provided according to an embodiment of the present application.

Fig. 12 is a schematic block diagram of a chip provided according to an embodiment of the present application.

Fig. 13 is a schematic block diagram of a communication system provided according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. With regard to the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

The technical solution of the embodiment of the present application can be applied to various communication systems, for example: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (General Packet Radio Service, GPRS), Long Term Evolution (Long Term Evolution, LTE) system, Advanced long term evolution (Advanced long term evolution, LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, the number of connections supported by traditional communication systems is limited and easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device (Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application may also be applied to these communication systems.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) deployment Web scene.

Optionally, the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered as non-shared spectrum.

The embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.

The terminal device can be a station (STATION, ST) in the WLAN, and can be a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future A terminal device and the like in an evolved public land mobile network (Public Land Mobile Network, PLMN) network.

In the embodiment of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).

In this embodiment of the application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal devices in industrial control, wireless terminal devices in self driving, wireless terminal devices in remote medical, wireless terminal devices in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.

As an example but not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable device is not only a hardware device, but also realizes powerful functions through software support, data interaction and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.

In the embodiment of the present application, the network device may be a device used to communicate with the mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network The network equipment (gNB) in the network or the network equipment in the future evolved PLMN network or the network equipment in the NTN network, etc.

As an example but not a limitation, in this embodiment of the present application, the network device may have a mobile feature, for example, the network device may be a mobile device. Optionally, the network equipment may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc. Optionally, the network device may also be a base station installed on land, water, and other locations.

In this embodiment of the present application, the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell, where the small cell may include: a metro cell, a micro cell, a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

Exemplarily, a communication system 100 applied in this embodiment of the application is shown in FIG. 1 . The communication system 100 may include a network device 110, and the network device 110 may be a device for communicating with a terminal device 120 (or called a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographical area, and can communicate with terminal devices located in the coverage area.

FIG. 1 exemplarily shows one network device and two terminal devices. Optionally, the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in this embodiment of the present application.

It should be understood that a device with a communication function in the network/system in the embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in FIG. 1 as an example, the communication equipment may include a network equipment 110 and a terminal equipment 120 with communication functions. The network equipment 110 and the terminal equipment 120 may be the specific equipment described above, and will not be repeated here. The communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B can mean: A exists alone, A and B exist simultaneously, and there exists alone B these three situations. In addition, the character "/" in this article generally indicates that the contextual objects are an "or" relationship.

It should be understood that the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.

In the description of the embodiments of the present application, the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.

In the embodiment of this application, "predefinition" can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate related information in devices (for example, including terminal devices and network devices). The implementation method is not limited. For example, pre-defined may refer to defined in the protocol.

In the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, it may include the LTE protocol, the NR protocol, and related protocols applied in future communication systems, which is not limited in the present application.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the MIMO calculation related to the present application will be described.

For terminal equipment with multiple transmit antennas, the uplink can support MIMO multi-stream transmission. Uplink MIMO includes codebook-based MIMO transmission and non-codebook-based MIMO transmission. For codebook-based MIMO transmission, codebooks are generally classified into fully coherent (full coherent) codebooks, partially coherent (partial coherent) codebooks, and non-coherent (non-coherent) codebooks. In other words, codebook-based MIMO transmission may include fully correlated MIMO transmission, partially correlated MIMO transmission and uncorrelated MIMO transmission.

Table 1 is an example of a configurable codebook for a terminal device with two transmit antennas, where Transmission Precoding Matrix Indicator (TPMI) 0 and 1 are irrelevant codebooks, and TPMI 2/3/4/5 is a fully correlated codebook. Usually, the terminal equipment can only support uplink 2-stream transmission, and it can be seen from the codebook table that for this type of terminal equipment, it can only work in two states of uncorrelated codebook or fully correlated codebook. When the number of uplink MIMO streams supported by a terminal device is higher than 2 streams, it may work in a partially related MIMO transmission mode.

Table 1

The MIMO transmission correlation of the terminal equipment is measured based on relative phase deviation and relative power (or relative amplitude) deviation between signals of multiple transmission paths. Fully correlated codebook transmission requires the terminal equipment to be able to keep the relative changes in power and phase between multiple transmission channels within a certain range within a certain period of time, so that the fully correlated codebook can be used for more efficient MIMO transmission. The network device can configure a corresponding type of codebook for the terminal device according to the MIMO transmission capability of the terminal device, such as a full coherent (full coherent) codebook, a partial coherent (partial coherent) codebook, or a non-coherent (non-coherent) codebook.

In some scenarios, the terminal device will report its MIMO transmission capability at the initial moment (for example, during random access), that is, whether the supported codebook type is a full coherent (full coherent) codebook or a partial coherent (partial coherent) codebook or Non-coherent codebooks. The supported codebook types will remain unchanged in subsequent communications.

As shown in Figure 2, if the terminal device has two transmission paths, the MIMO transmission correlation mainly refers to the relative amplitude and relative phase deviation between the signals of the transmission path 1 and the transmission path 2. There are many factors that affect the MIMO transmission correlation of terminal equipment, such as high temperature, low temperature, high voltage, low voltage, etc., because the terminal equipment needs to ensure that its MIMO transmission correlation is the same in all scenarios, resulting in terminal equipment Even if it is able to support fully correlated or partially correlated transmission in some cases, it can only be reported as having uncorrelated MIMO transmission capability. In addition, the amplitude or phase deviation between multiple transmission branches inside the terminal device will accumulate over time, eventually causing the deviation to exceed the requirements of correlated or partially correlated MIMO transmission and only uncorrelated MIMO transmission can be applied.

Therefore, it is difficult for the terminal equipment to maintain the fully correlated MIMO transmission capability, which also leads to the fact that most terminals do not have the fully correlated MIMO transmission capability, which affects the performance of the terminal equipment. Therefore, how to maintain the correlated MIMO transmission capability of the terminal equipment to improve the terminal equipment performance is an urgent problem to be solved.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. As optional solutions, the above related technologies may be combined with the technical solutions of the embodiments of the present application in any combination, and all of them belong to the protection scope of the embodiments of the present application. The embodiment of the present application includes at least part of the following content.

FIG. 3 is a schematic interaction diagram of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 3, the method 200 includes the following content:

S210. The terminal device calibrates the correlation between multiple transmission paths of the terminal device in the first calibration window;

S220. The terminal device performs data transmission based on the calibrated correlation of the multiple transmission paths.

In some embodiments of the present application, the MIMO transmission correlation of the terminal device may include uncorrelated MIMO transmission, partially correlated MIMO transmission and fully correlated MIMO transmission. In other embodiments, it may also include more correlation levels, The present application only takes the above three levels as examples for illustration, but the present application is not limited thereto.

In some embodiments of the present application, uncorrelated MIMO transmission may refer to data transmission based on an uncorrelated MIMO transmission configuration, partially correlated MIMO transmission may refer to data transmission based on a partially correlated MIMO transmission configuration, and fully correlated MIMO transmission may refer to data transmission based on a fully correlated MIMO transmission configuration. Transfer configuration for data transfer.

Optionally, the uncorrelated MIMO transmission configuration may include an uncorrelated codebook (or a codebook set), the partially correlated MIMO transmission configuration may include a partially correlated codebook (or a codebook set), and the A fully correlated MIMO transmission configuration may include a fully correlated codebook (or rather, a set of codebooks).

It should be understood that in this embodiment of the application, if the terminal device indicates that it supports a partially correlated codebook set, the terminal device should be able to support a non-correlated codebook set, and if the terminal device supports a fully correlated codebook set, the terminal device should support a partially correlated codebook set. and unrelated codebook sets. In other words, if the terminal device supports fully correlated MIMO transmission, the terminal device also supports partial correlated MIMO transmission and uncorrelated MIMO transmission, or, if the terminal device supports partially correlated MIMO transmission, the terminal device also supports uncorrelated MIMO transmission.

In this embodiment of the present application, the terminal device calibrates the correlation between the multiple transmission paths so that the relative amplitude and relative phase variation between the signals of the multiple transmission paths are within a certain range, so as to meet the correlation MIMO According to transmission requirements, data transmission can be further performed based on related MIMO transmission modes to improve the uplink transmission performance of terminal equipment.

Optionally, in some embodiments, the terminal device may report the initial MIMO transmission capability to the network device, for example, the initial MIMO transmission capability may be full correlated MIMO transmission capability, partial correlated MIMO transmission capability or uncorrelated MIMO transmission capability wait. In other words, the terminal device may report the codebook type supported by the terminal device to the network device, for example, a fully correlated codebook, a partially correlated codebook, or an uncorrelated codebook.

In some scenarios, because the terminal device cannot guarantee that the MIMO transmission capability is the same in all scenarios, even if the terminal device can support full correlated MIMO transmission or partial correlated MIMO transmission in some cases, it can only report the information with uncorrelated MIMO transmission. transmission capacity.

In some embodiments of the present application, the correlation among the multiple transmission paths is improved by calibrating the correlation among the multiple transmission paths. For example, if the correlation among the multiple transmission channels before calibration is non-correlation, the correlation among the multiple transmission channels after calibration may be partial correlation or full correlation. For another example, if the correlation among the multiple transmission channels before calibration is partial correlation, the correlation among the multiple transmission channels after calibration may be full correlation.

It should be understood that, in this embodiment of the present application, the correlation among the multiple transmission paths may be determined according to relative phase variation and relative amplitude variation between signals of the multiple transmission paths.

In some embodiments of the present application, the calibrating the correlation between the multiple transmission paths of the terminal device may refer to: adjusting the amplitude and phase of the signals of the multiple transmission paths so that the multiple transmission paths The relative amplitude and relative phase changes between the signals are within the target range.

In some embodiments, fully correlated codebook transmission requires the terminal device to be able to keep the relative amplitude and relative phase changes of the signals of multiple transmission paths within a first range within a certain period of time, and partially correlated codebook transmission also requires The terminal device can keep the variation of the relative amplitude and the relative phase of the signals of the multiple transmission paths within a second range within a certain period of time.

Optionally, the target range may be the first range required by the fully correlated codebook, or may also be the second range required by the partially correlated codebook, which may be specifically determined according to the initial MIMO transmission capability of the terminal device.

Fig. 4 is a schematic diagram of a calibration process of a terminal device with two transmission paths as an example. Specifically, the terminal device may include a control unit (which may be the baseband part of the terminal device), power amplifiers (PA) corresponding to the two transmission paths, namely PA1 and PA2, and a mixer for receiving the calibration signal and the local oscillator signal ( LO), and an amplitude and phase comparison unit, which are used to compare the relative amplitude and relative phase of the signals of the two transmission paths.

The calibration process of the terminal device on the transmission path may be: first, the control unit controls the transmission of the calibration signal on the target frequency band, the calibration signal is input to the transmission path 1 and the transmission path 2, and the output signal of the transmission path 1 and the transmission path 2 The amplitude and phase are compared to obtain the amplitude deviation value and phase deviation value between the signals, and the amplitude deviation value and phase deviation value are input to the control unit to adjust the amplitude and phase of the signal transmitted by the transmission channel so that the two transmission channels The variation of the relative amplitude and relative phase between the signals is within the target range, so as to meet the requirements of related MIMO transmission.

In some embodiments, the target frequency band may be a working frequency band of the terminal device, or may also be other frequency bands configured on the terminal device, for example, a millimeter wave frequency band, etc., which is not limited in the present application.

In some embodiments, the terminal device needs to be scheduled by the network device to transmit signals to avoid interference to other users. In the embodiment of the present application, the terminal device is configured with a calibration window through the network device, and in the calibration window, the terminal device performs correlation calibration among the multiple transmission paths, or MIMO self-calibration.

Optionally, when the terminal device performs correlation calibration among multiple paths in the first calibration window, normal data transmission between the terminal device and the network device is suspended. For example, the network device does not schedule the network device to perform uplink transmission in the first calibration window, and the terminal device does not send an uplink signal to the network device in the first calibration window.

In some embodiments of the present application, the first calibration window is configured by the network device based on a calibration window request of the terminal device. For example, when the correlation among the multiple transmission paths is lower than a preset condition, the terminal device requests the network device to configure the first calibration window.

In some embodiments, the terminal device may monitor changes in the relative amplitude and relative phase of the signals of the multiple transmission links, when the relative amplitude change of the signals between the multiple transmission channels is greater than a first threshold, and/ Or when the relative phase variation of the signals among the multiple transmission paths is greater than the second threshold, the terminal device requests the network device to configure the first calibration window.

Optionally, in some embodiments, the calibration window request may be carried by any message used for interaction between the terminal device and the network device, for example, an uplink radio resource control (Radio Resource Control, RRC) message, an uplink media Access control (Media Access Control, MAC) signaling, etc.

In other embodiments of the present application, the first calibration window is configured by the network device for the terminal device autonomously, for example, the network device may configure the first calibration window for the terminal device when the performance of the related MIMO transmission deteriorates . Optionally, the performance deterioration of the related MIMO transmission may include, but not limited to, that the throughput of the related MIMO transmission is less than a certain threshold, for example.

In still some embodiments of the present application, the first calibration window may be a periodic time window. In this case, the terminal device may not send a calibration window request to the network device. When the period of the calibration window arrives, both the terminal device and the network device know that the terminal device will perform multiple transmission paths within a certain period of time. Correlation calibration between the two, thus suspending the normal data transmission between the two within a certain period of time.

It should be understood that the above configuration of the first calibration window is only an example. In other embodiments, the terminal device may also perform MIMO self-calibration based on the first calibration window in other situations where MIMO self-calibration is required. Applications are not limited to this.

In some embodiments, the network device may configure a first timer (or blocking timer) for the terminal device, wherein, during the running of the first timer, the terminal device is prohibited from initiating a calibration window request, Or prohibit the terminal device from stopping the ongoing correlation calibration.

In some embodiments, when the first timer is not working, the terminal device sends the calibration window request to the network device.

In other words, when the first timer is working, within the first calibration window, the terminal device does not initiate a calibration window request to the network device again, or does not stop performing the correlation calibration being performed.

In some embodiments of the present application, the method 200 further includes:

The terminal device reports the calibration capability of the terminal device to the network device, and the calibration capability is used to indicate whether the terminal device has the capability of performing correlation calibration between multiple transmission paths of the terminal device based on a calibration window .

In some embodiments, when the terminal device is capable of performing correlation calibration between multiple transmission paths of the terminal device based on a calibration window, the network device configures the terminal device with the first a calibration window.

In some embodiments of the present application, the initial MIMO transmission capability of the terminal device is an uncorrelated MIMO transmission capability, and it is desired to adopt (or keep adopting) a correlation-based MIMO transmission mode (such as a partial correlation MIMO transmission mode or a full correlation MIMO transmission mode). In the case of performing data transmission in the transmission mode), the correlation between the multiple transmission paths of the terminal device is calibrated based on the calibration window. For example, sending the calibration window request to a network device.

In some other embodiments of the present application, the initial MIMO transmission capability of the terminal device is partial correlation MIMO transmission capability, and it is expected to adopt (or keep adopting) a correlation MIMO transmission mode (such as a partial correlation MIMO transmission mode or a full correlation MIMO transmission mode). In the case of performing data transmission in the transmission mode), the correlation between the multiple transmission paths of the terminal device is calibrated based on the calibration window. For example, sending the calibration window request to a network device.

In some other embodiments of the present application, when the initial MIMO transmission capability of the terminal device is fully correlated MIMO transmission capability, and it is expected to use (or keep using) fully correlated MIMO transmission mode for data transmission, based on the calibration window Calibrating the correlation among multiple transmission paths of the terminal device. For example, sending the calibration window request to a network device.

Optionally, in some embodiments, the network device may also configure the terminal device with a transmission power limit of the calibration signal. That is, the maximum transmit power of the calibration signal sent in the first calibration window. By configuring the transmit power limit, it is possible to reduce the interference of the terminal device to other UEs when performing correlation calibration.

In some embodiments of the present application, as shown in FIG. 5 , the first calibration window is an aperiodic time window. The terminal device performs correlation calibration among multiple transmission channels within the first calibration window, and performs normal data communication at other times.

In some embodiments, the length of the first calibration window is predefined.

In other words, the length of the first calibration window may be a fixed time length. In this case, the terminal device only needs to send a calibration window request to the network device, and the network device configures the calibration window according to the fixed time length.

In some other embodiments, the length of the first calibration window is configured by the network device.

In some embodiments, the length of the first calibration window may be configured by the network device based on a request from the terminal device. The network device configures the length of the first calibration window. For example, the calibration window request may include the length of the first calibration window expected by the terminal device. Optionally, the network device may configure the length of the first calibration window according to the capabilities or implementation requirements of the terminal device, or may also configure the length of the first calibration window expected by the terminal device.

In other embodiments of the present application, as shown in FIG. 6 , the first calibration window is a periodic time window. The terminal device performs correlation calibration among multiple transmission channels within a periodic calibration window, and performs normal data communication at other times.

In some embodiments, the length of the first calibration window is predefined, or configured by the network device.

That is to say, the length of the periodic calibration window may be a fixed time length, or may also be a time length configured by the network device, and the time length of the periodic calibration window may be configured by the network device based on the request of the terminal device, for example, the The calibration window request is used to request configuration of the first calibration window, and may also be used to request the network device to configure the length of a periodic calibration window. For example, the calibration window request may include the length of the calibration window expected by the terminal device. Optionally, the network device may configure the length of the first calibration window according to the capabilities or implementation requirements of the terminal device, or may also configure the length of the calibration window expected by the terminal device.

In some embodiments, the period of the first calibration window is predefined, or configured by the network device.

That is to say, the period of the periodic calibration window may be a fixed time length, or may also be the time length configured by the network device, and the period of the periodic calibration window may be configured by the network device based on the request of the terminal device, for example, the The calibration window request is used to request configuration of the first calibration window, and may also be used to request the network device to configure a period of a periodic calibration window. For example, the calibration window request may include a period of the calibration window expected by the terminal device. Optionally, the network device may configure the period of the first calibration window according to the capability or implementation requirements of the terminal device, or may also configure the period of the calibration window expected by the terminal device.

Optionally, in some embodiments, the method 200 further includes:

The network device sends a window activation message to the terminal device, where the window activation message is used to activate the first calibration window in the periodic time window.

Optionally, the first calibration window may include one time window in periodic time windows, or may also include multiple time windows.

In some embodiments, the network device may activate the periodic calibration window based on the request of the terminal device, for example, activate the periodic calibration window when a calibration window request from the terminal device is received.

In other embodiments, for example, the network device may activate the periodic calibration window when the performance of the associated MIMO transmission deteriorates. Optionally, the performance deterioration of the related MIMO transmission may include, but not limited to, that the throughput of the related MIMO transmission is less than a certain threshold, for example.

Optionally, in some embodiments, the method 200 further includes:

The network device sends a window deactivation message to the terminal device, where the window deactivation message is used to deactivate the periodic time window.

Optionally, after the periodic time window is deactivated, the terminal device may perform normal data communication within the periodic time window until the periodic time window is activated.

In some embodiments, the window activation message is sent by the network device based on a calibration completion message of the terminal device, and the calibration completion message is used to instruct the terminal device to complete multiple transmissions to the terminal device Correlation calibration between pathways. That is, after the terminal device performs correlation calibration, the network device deactivates the periodic calibration window.

In some other embodiments, the window activation message is sent by the network device autonomously. For example, the network device may deactivate the periodic calibration window when there is an urgent service transmission requirement, so that the service can be transmitted in time.

In some embodiments of the present application, the method 200 further includes:

After the first calibration window, the terminal device receives the relevant MIMO transmission configuration sent by the network device.

By calibrating the correlation between the multiple transmission channels, the correlation between the multiple transmission channels is improved, for example, it is improved to partial correlation or full correlation, or in other words, after calibration, the multiple transmission channels can be realized Partial or full correlation between pathways. Uplink transmission is further performed based on a plurality of correlated transmission paths, which is beneficial to improve uplink transmission performance.

Optionally, the correlated MIMO transmission configuration may include a partially correlated codebook or a fully correlated codebook.

For example, the initial MIMO transmission capability of the terminal device is an uncorrelated MIMO transmission capability, and the network device may configure a partial correlated MIMO transmission configuration or a fully correlated MIMO transmission configuration for the terminal device. That is to say, by calibrating the correlation between multiple transmission channels, the terminal equipment can be upgraded from using uncorrelated MIMO transmission to using partially correlated MIMO transmission or fully correlated MIMO transmission, which is conducive to improving the performance of uplink MIMO transmission.

For another example, if the initial MIMO transmission capability of the terminal device is a partial correlation MIMO transmission capability, the network device may configure a full correlation MIMO transmission configuration for the terminal device. That is to say, by calibrating the correlation among multiple transmission channels, the terminal device can be upgraded from using partially correlated MIMO transmission to fully correlated MIMO transmission, which is beneficial to improving uplink MIMO transmission performance.

In some embodiments of the present application, the method 200 further includes:

The terminal device sends a related MIMO transmission request to the network device.

Optionally, the related MIMO transmission request is used to request the related MIMO transmission configuration from the network device, or in other words, the related MIMO transmission request is used to request related MIMO transmission, such as full related MIMO transmission or partial MIMO transmission .

Optionally, the related MIMO transmission configuration is configured by the network device based on the related MIMO transmission request of the terminal device.

That is to say, after the first calibration window, the network device considers that the correlation between multiple transmission paths of the terminal device is improved, and related MIMO transmission can be performed, so the related MIMO configuration can be directly configured for the terminal device. Alternatively, the relevant MIMO transmission configuration may also be configured for the terminal device based on the relevant MIMO transmission request of the terminal device.

In some embodiments of the present application, the method 200 further includes:

The terminal device sends first indication information to the network device, where the first indication information is used to instruct the terminal device to fall back to performing data transmission based on a partially correlated MIMO transmission configuration or an uncorrelated MIMO transmission configuration.

In some embodiments, the terminal device may send the first indication information to the network device when the correlation among the multiple transmission paths is lower than a preset condition.

For example, the terminal device may monitor the relative changes in signal amplitude and phase among the multiple transmission links, the relative amplitude change of the signals among the multiple transmission paths is greater than a first threshold, and/or the multiple transmission paths In a case where the relative phase variation of the inter-signals is greater than the second threshold, the network device is instructed to fall back to partially correlated MIMO transmission or uncorrelated MIMO transmission.

As an example, the initial MIMO transmission capability of the terminal device is uncorrelated MIMO transmission capability, and in the case that the correlation among the multiple transmission paths is lower than a preset condition, the network device is instructed to fall back to uncorrelated MIMO transmission.

As an example, the initial MIMO transmission capability of the terminal device is partially correlated MIMO transmission capability, and when the correlation between the multiple transmission channels is lower than a preset condition, the network device is instructed to fall back to partially correlated MIMO transmission or not Correlated MIMO transmission.

In some embodiments of the present application, the method 200 further includes:

The network device sends second indication information to the terminal device, where the second indication information is used to instruct the network device to fall back to perform data transmission based on a partially correlated MIMO transmission configuration or an uncorrelated MIMO transmission configuration, or return Return to the MIMO transmission mode corresponding to the initial MIMO transmission capability.

In some embodiments, the network device may determine whether to fall back to partially correlated MIMO transmission or uncorrelated MIMO transmission according to performance changes of correlated MIMO transmissions. For example, in the case that the throughput of the correlated MIMO transmission is lower than a certain threshold, fall back to partial correlated MIMO transmission or uncorrelated MIMO transmission.

In some embodiments, the second indication information may be MIMO transmission configuration reconfigured by the network device for the terminal device. For example, after the first calibration window, if the terminal device receives the MIMO transmission configuration with lower correlation sent by the network device after receiving the relevant MIMO transmission configuration from the network device, it may be considered that the network device indicates to fall back to a more relevant MIMO transmission configuration. Low MIMO transmission.

As an example, if after the first calibration window, the terminal device receives the fully correlated MIMO transmission configuration of the network device, and then receives the uncorrelated MIMO transmission configuration or partially correlated MIMO transmission configuration of the network device, in this case, it can be considered The network device indicates to fall back to uncorrelated MIMO transmission or partially correlated MIMO transmission. Further, the terminal device may perform uncorrelated MIMO transmission or partially correlated MIMO transmission based on the uncorrelated MIMO transmission configuration or partially correlated MIMO transmission configuration.

In still other embodiments, the second indication information may be displayed indication information used to instruct the network device to fall back to partially correlated MIMO transmission or uncorrelated MIMO transmission. For example, the second indication information may be 1 bit, and different values of the 1 bit are used to indicate whether to fall back to partially correlated MIMO transmission or uncorrelated MIMO transmission. For another example, the second indication information may indicate whether to fall back to partially correlated MIMO transmission or uncorrelated MIMO transmission in a bitmap manner.

Hereinafter, an overall flow of the wireless communication method 300 according to the embodiment of the present application will be specifically described with reference to FIG. 7 and FIG. 8 .

In the example in FIG. 7 , the MIMO transmission capability of the terminal device at the time of initial reporting is a partially correlated MIMO transmission capability or an uncorrelated MIMO transmission capability. Alternatively, it may be a fully correlated MIMO transmission capability. In the following, a terminal device having a partially correlated or uncorrelated MIMO transmission capability is used as an example for illustration, and it is also applicable to a terminal device having a fully correlated MIMO transmission capability.

In some scenarios, in order to adopt correlated MIMO transmission in at least some scenarios, the terminal device may improve the correlation among multiple transmission channels through the MIMO self-calibration process of the embodiment of the present application, for example, to achieve full correlation. Wherein, for the MIMO self-calibration process, refer to the relevant description above, which will not be repeated here.

Since the MIMO self-calibration process requires the input of a calibration signal and the external transmission of the calibration signal after passing through the transmission channel, since the working frequency band of the terminal device is mostly an authorized frequency band, this means that the terminal device cannot To transmit the signal. Therefore, the above MIMO self-calibration process needs to be performed within a specific time window (for example, the first calibration window).

As shown in FIG. 7, in some embodiments, the method 300 may include:

S301. The terminal device reports a calibration capability to the network device, where the calibration capability is used to indicate that the terminal device has a capability of performing correlation calibration on multiple transmission paths of the terminal device based on a calibration window.

For example, the terminal device may report the calibration capability when it has multiple transmission paths or has related MIMO transmission requirements.

Optionally, in some embodiments, the method 300 may include:

S302. The terminal device sends a calibration window request to the network device, where the calibration window request is used to request the network device to configure the first calibration window.

For example, the terminal device may send the calibration window request when the correlation of multiple transmission paths is lower than a preset condition.

In some other embodiments, the first calibration window may also be independently configured by the network device. For example, the network device configures the first calibration window when the performance of related MIMO transmission with the terminal device deteriorates.

In some embodiments, the first calibration window is an aperiodic time window. For example, the length of the first calibration window may be fixed or configured by the network device, for example, the terminal device requests the network device to configure the length of the first calibration window while requesting configuration of the first calibration window .

In other embodiments, the first calibration window is a periodic time window.

For example, the length of the first calibration window may be fixed or configured by a network device.

For example, the period of the first calibration window may be fixed or configured by a network device.

As an example, when requesting configuration of the first calibration window, the terminal device also requests the network device to configure the length and/or period of the first calibration window.

In S303, the network device configures the first calibration window for the terminal device.

For example, the length and/or period of the first calibration window may also be configured while configuring the first calibration window.

For another example, if the length or period of the first calibration window is not configured, the length adopts a default or predefined length, and the period adopts a default or predefined period.

Optionally, in S303, the network device may also configure the terminal device with a transmission power limit of the calibration signal, that is, a maximum transmission power of the calibration signal sent in the first calibration window.

Further, S304, the terminal device performs correlation calibration among the multiple transmission paths in the first calibration window, and suspends normal data communication with the network device.

Optionally, in some embodiments, the method 300 may include:

S305. After the first calibration window, the terminal device sends a related MIMO transmission request to the network device.

Optionally, the correlated MIMO transmission request may be a partial correlated MIMO transmission request or a fully correlated MIMO transmission request.

Optionally, in some embodiments, the method 300 may include:

S306. After the first calibration window, the terminal device receives the relevant MIMO transmission configuration sent by the network device.

Optionally, the related MIMO transmission configuration may be configured based on the related MIMO transmission request in S305, or may also be configured independently by the network device. For example, after the first calibration window, the network device considers that the terminal device meets the relevant MIMO transmission requirements, and thus configures the corresponding MIMO transmission configuration.

Optionally, the correlated MIMO transmission configuration may be a partially correlated MIMO transmission configuration, such as a partially correlated codebook, or may also be a fully correlated MIMO transmission configuration, such as a fully correlated codebook.

Further, the terminal device may perform related MIMO transmission based on the related MIMO transmission configuration.

In some embodiments, the method 200 may include:

S307. The terminal device instructs the network device to fall back to uncorrelated MIMO transmission or partially correlated MIMO transmission.

In some embodiments, the terminal device falls back to uncorrelated MIMO transmission or partially correlated MIMO transmission when the correlation among multiple transmission paths is lower than a preset condition. For example, the terminal device may send first indication information to the network device, where the first indication information is used to instruct the terminal device to fall back to uncorrelated MIMO transmission or partially correlated MIMO transmission.

As an example, the initial MIMO transmission capability of the terminal device is uncorrelated MIMO transmission capability, then the terminal device may fall back to uncorrelated MIMO transmission. For example fallback from fully correlated MIMO transmission or partially correlated MIMO transmission to uncorrelated MIMO transmission.

As yet another example, if the initial MIMO transmission capability of the terminal device is partial correlated MIMO transmission capability, then the terminal device may fall back to partial correlated MIMO transmission or uncorrelated MIMO transmission. For example, fallback from fully correlated MIMO transmission to partially correlated MIMO transmission or uncorrelated MIMO transmission.

In some embodiments, the method 300 may include:

S308. The network device sends the uncorrelated MIMO transmission configuration or the partially correlated MIMO transmission configuration to the terminal device.

Optionally, the sending by the network device to the terminal device of the uncorrelated MIMO transmission configuration or the partially correlated MIMO transmission configuration may be based on the sending in S307. Alternatively, it may also be sent by the network device autonomously. For example, when the throughput of the related MIMO transmission is lower than a certain threshold, the network device indicates the uncorrelated MIMO transmission configuration or part of the related MIMO transmission configuration to the terminal device, which is used to instruct the terminal device to fall back to the uncorrelated MIMO transmission or Partially correlated MIMO transmission.

In the example in FIG. 8 , the MIMO transmission capability of the terminal device at the time of initial reporting is the full correlation MIMO transmission capability.

In some scenarios, in order to use fully correlated MIMO transmission in at least some scenarios, or in other words, to maintain full correlation among multiple transmission paths, the terminal device can use the MIMO self-calibration process of the embodiment of the present application to improve multiple transmission channels. Correlation between pathways. Wherein, for the MIMO self-calibration process, refer to the relevant description above, which will not be repeated here.

As shown in FIG. 8, in some embodiments, the method 300 may include:

S311. The terminal device reports a calibration capability to the network device, where the calibration capability is used to indicate that the terminal device has a capability of performing correlation calibration on multiple transmission paths of the terminal device based on a calibration window.

For example, the terminal device may report the calibration capability when it has multiple transmission paths or has related MIMO transmission requirements.

Optionally, in some embodiments, the method 300 may include:

S312. The terminal device sends a calibration window request to the network device, where the calibration window request is used to request the network device to configure the first calibration window.

For example, the terminal device may send the calibration window request when the correlation of multiple transmission paths is lower than a preset condition.

In some other embodiments, the first calibration window may also be independently configured by the network device. For example, the network device configures the first calibration window when the performance of related MIMO transmission with the terminal device deteriorates.

Optionally, in some embodiments, the first calibration window is an aperiodic time window. For example, the length of the first calibration window may be fixed or configured by the network device, for example, the terminal device requests the network device to configure the length of the first calibration window while requesting configuration of the first calibration window .

Optionally, in some embodiments, the first calibration window is a periodic time window.

For example, the length of the first calibration window may be fixed or configured by a network device.

For example, the period of the first calibration window may be fixed or configured by a network device.

As an example, when requesting configuration of the first calibration window, the terminal device also requests the network device to configure the length and/or period of the first calibration window.

Further, in S313, the network device configures the first calibration window for the terminal device.

For example, the length and/or period of the first calibration window may also be configured while configuring the first calibration window.

For another example, if the length or period of the first calibration window is not configured, the length adopts a default or predefined length, and the period adopts a default or predefined period.

Optionally, in S313, the network device may also configure the terminal device with a transmission power limit of the calibration signal, that is, a maximum transmission power of the calibration signal sent in the first calibration window.

Further, S314, the terminal device performs correlation calibration among the multiple transmission paths in the first calibration window, and suspends normal data communication with the network device.

Optionally, in some embodiments, after the first calibration window, the terminal device and the network device perform fully correlated MIMO transmission.

Optionally, the fully correlated MIMO transmission configuration according to which the terminal device performs the fully correlated MIMO transmission may be configured by the network device after the initial report.

Optionally, in some embodiments, the method 300 may include:

S315. The terminal device instructs the network device to fall back to uncorrelated MIMO transmission or partially correlated MIMO transmission.

In some embodiments, the terminal device falls back to uncorrelated MIMO transmission or partially correlated MIMO transmission when the correlation among multiple transmission paths is lower than a preset condition. For example, the terminal device may send first indication information to the network device, where the first indication information is used to instruct the terminal device to fall back to uncorrelated MIMO transmission or partially correlated MIMO transmission.

In some embodiments, the method 300 may include:

S316. The network device sends the uncorrelated MIMO transmission configuration or the partially correlated MIMO transmission configuration to the terminal device.

Optionally, the network device sending the uncorrelated MIMO transmission configuration or the partially correlated MIMO transmission configuration to the terminal device may be based on the first indication information in S316. Alternatively, it may also be determined independently by the network device. For example, when the throughput of the related MIMO transmission is lower than a certain threshold, the network device indicates the uncorrelated MIMO transmission configuration or part of the related MIMO transmission configuration to the terminal device, which is used to instruct the terminal device to fall back to the uncorrelated MIMO transmission or Partially correlated MIMO transmission, in this case, the uncorrelated MIMO transmission configuration or partially correlated MIMO transmission configuration corresponds to the second indication information above.

To sum up, the terminal device calibrates the correlation of multiple transmission paths of the terminal device based on the calibration window, which improves the correlation between the multiple transmission paths, and further can be based on the correlation between the multiple transmission paths. Performing related MIMO transmission is beneficial to improving the uplink transmission performance of the terminal equipment.

The method embodiment of the present application is described in detail above in conjunction with FIG. 3 to FIG. 8 , and the device embodiment of the present application is described in detail below in conjunction with FIG. 9 to FIG. 13 . It should be understood that the device embodiment and the method embodiment correspond to each other, similar to The description can refer to the method embodiment.

Fig. 9 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application. As shown in FIG. 9, the terminal device 400 includes:

A processing unit 410, configured to calibrate the correlation between multiple transmission paths of the terminal device in the first calibration window;

The communication unit 420 is configured to perform data transmission based on the calibrated correlation of the multiple transmission paths.

In some embodiments of the present application, the communication unit 420 is also used to:

Sending a calibration window request to the network device, where the calibration window request is used to request the network device to configure the first calibration window.

In some embodiments of the present application, the communication unit 420 is also used to:

When the first timer is not working, send the calibration window request to the network device, wherein, during the running of the first timer, prohibit the terminal device from initiating a calibration window request or prohibit the terminal device from Stops an ongoing correlation calibration.

In some embodiments of the present application, the first timer is configured by the network device.

In some embodiments of the present application, the communication unit 420 is also used to:

When the correlation among the multiple transmission paths is lower than a preset condition, sending the calibration window request to the network device.

In some embodiments of the present application, the correlation between the multiple transmission paths is lower than the preset condition includes at least one of the following:

The relative amplitude variation of the signals among the plurality of transmit paths is greater than a first threshold;

The relative phase variation of the signals among the multiple transmit paths is greater than a second threshold.

In some embodiments of the present application, the first calibration window is an aperiodic time window.

In some embodiments of the present application, the length of the first calibration window is predefined, or configured by a network device.

In some embodiments of the present application, the calibration window request is further used to request the network device to configure the length of the first calibration window, and the length of the first calibration window is set by the network device based on the calibration window request configured.

In some embodiments of the present application, the first calibration window is a periodic time window.

In some embodiments of the present application, the length of the first calibration window is predefined, or configured by the network device; and/or

The period of the first calibration window is predefined, or configured by the network device.

In some embodiments of the present application, the calibration window request is further used to request the network device to configure the length and/or period of the first calibration window, and the length and/or period of the first calibration window are the The network device is configured based on the calibration window request.

In some embodiments of the present application, the communication unit 420 is also used to:

receiving a window activation message sent by a network device, where the window activation message is used to activate the first calibration window in the periodic time window, and the window activation message is sent by the network device based on the calibration window request of.

In some embodiments of the present application, the communication unit 420 is also used to:

Receive a window deactivation message sent by the network device, where the window deactivation message is used to deactivate the periodic time window.

In some embodiments of the present application, the window activation message is sent by the network device based on a calibration completion message of the terminal device, and the calibration completion message is used to instruct the terminal device to complete multiple Correlation calibration between transmission channels.

In some embodiments of the present application, the communication unit 420 is also used to:

After the first calibration window, receive the relevant MIMO transmission configuration sent by the network device.

In some embodiments of the present application, the communication unit 420 is also used to:

If the initial MIMO transmission capability of the terminal device is an uncorrelated MIMO transmission capability, receiving a partial correlated MIMO transmission configuration or a fully correlated MIMO transmission configuration sent by the network device; or

If the initial MIMO transmission capability of the terminal device is a partial correlation MIMO transmission capability, receiving the full correlation MIMO transmission configuration sent by the network device.

In some embodiments of the present application, the communication unit 420 is also used to:

According to the correlated MIMO transmission configuration, data transmission is performed based on the calibrated correlation of the plurality of transmit paths.

In some embodiments of the present application, the communication unit 420 is further configured to: send a related MIMO transmission request to the network device, where the related MIMO transmission request is used to request the related MIMO transmission configuration from the network device, so The related MIMO transmission configuration is configured by the network device based on the related MIMO transmission request of the terminal device.

In some embodiments of the present application, the communication unit 420 is also used to:

When the correlation between the multiple transmission paths is lower than the preset condition, sending first indication information to the network device, where the first indication information is used to instruct the terminal device to fall back to partial correlation based MIMO transmission configuration or uncorrelated MIMO transmission configuration for data transmission.

In some embodiments of the present application, the communication unit 420 is also used to:

receiving second indication information sent by the network device, where the second indication information is used to instruct the network device to fall back to performing data transmission based on a partially correlated MIMO transmission configuration or an uncorrelated MIMO transmission configuration.

In some embodiments of the present application, the processing unit 410 is further configured to:

In the case that the initial MIMO transmission capability of the terminal device is a partial correlated MIMO transmission capability or an uncorrelated MIMO transmission capability, and it is expected to use a correlated MIMO transmission configuration for data transmission, in the first calibration window, for the terminal Calibrate the correlation between multiple transmission channels of the device; or

In the case that the initial MIMO transmission capability of the terminal device is the fully correlated MIMO transmission capability, and it is desired to use the fully correlated MIMO transmission configuration for data transmission, in the first calibration window, multiple transmissions of the terminal device Correlations between channels were calibrated.

In some embodiments of the present application, the communication unit 420 is also used to:

Reporting the calibration capability of the terminal device to the network device, where the calibration capability is used to indicate whether the terminal device is capable of performing correlation calibration between multiple transmission paths of the terminal device based on a calibration window.

In some embodiments of the present application, the first calibration window is when the terminal device has the ability to perform correlation calibration between multiple transmission paths of the terminal device based on the calibration window, the network The device is configured for the terminal device.

Optionally, in some embodiments, the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system on chip. The aforementioned processing unit may be one or more processors.

It should be understood that the terminal device 400 according to the embodiment of the present application may correspond to the terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 400 are to realize the For the sake of brevity, the corresponding process of the terminal device in the method embodiment shown will not be repeated here.

Fig. 10 is a schematic block diagram of a network device according to an embodiment of the present application. The network device 500 of FIG. 10 includes:

The communication unit 510 is configured to receive a calibration window request sent by a terminal device, where the calibration window request is used to request the network device to configure a first calibration window, and the first calibration window is used for the terminal device to communicate with the terminal device Calibrate the correlation between the multiple emission paths of the

Configure a first calibration window for the terminal device.

In some embodiments of the present application, the communication unit 510 is also used to:

A first timer is configured for the terminal device, wherein during the running of the first timer, the terminal device is prohibited from initiating a calibration window request or the terminal device is prohibited from stopping ongoing correlation calibration.

In some embodiments of the present application, the first calibration window is an aperiodic time window.

In some embodiments of the present application, the length of the first calibration window is predefined, or configured by a network device.

In some embodiments of the present application, the calibration window request is further used to request the network device to configure the length of the first calibration window, and the length of the first calibration window is set by the network device based on the calibration window request configured.

In some embodiments of the present application, the first calibration window is a periodic time window.

In some embodiments of the present application, the length of the first calibration window is predefined, or configured by the network device; and/or

The period of the first calibration window is predefined, or configured by the network device.

In some embodiments of the present application, the calibration window request is further used to request the network device to configure the length and/or period of the first calibration window, and the length and/or period of the first calibration window are the The network device is configured based on the calibration window request.

In some embodiments of the present application, the communication unit 510 is also used to:

sending a window activation message to the terminal device, where the window activation message is used to activate the first calibration window in the periodic time window, and the window activation message is the network device's request based on the calibration window sent.

In some embodiments of the present application, the communication unit 510 is also used to:

Sending a window deactivation message to the terminal device, where the window deactivation message is used to deactivate the periodic time window.

In some embodiments of the present application, the window activation message is sent by the network device based on the calibration completion message of the terminal device, and the calibration completion message is used to instruct the terminal device to complete multiple transmissions to the terminal device Correlation calibration between pathways.

In some embodiments of the present application, the communication unit 510 is also used to:

After the first calibration window, sending the relevant MIMO transmission configuration to the terminal device.

In some embodiments of the present application, if the initial MIMO transmission capability of the terminal device is an uncorrelated MIMO transmission capability, the correlated MIMO transmission configuration is a partially correlated MIMO transmission configuration or a fully correlated MIMO transmission configuration; or

If the initial MIMO transmission capability of the terminal device is a partial correlation MIMO transmission capability, the correlation MIMO transmission configuration is a full correlation MIMO transmission configuration.

In some embodiments of the present application, the communication unit 510 is also used to:

receiving a related MIMO transmission request sent by the terminal device, where the related MIMO transmission request is used to request the related MIMO transmission configuration from the network device, and the related MIMO transmission configuration is based on the network device's configuration of the terminal device The associated MIMO transmission request is configured.

In some embodiments of the present application, the communication unit 510 is also used to:

receiving first indication information sent by the terminal device, where the first indication information is used to instruct the terminal device to fall back to performing data transmission based on a partially correlated MIMO transmission configuration or an uncorrelated MIMO transmission configuration.

In some embodiments of the present application, the communication unit 510 is also used to:

Sending second indication information to the terminal device, where the second indication information is used to instruct the network device to fall back to performing data transmission based on a partially correlated MIMO transmission configuration or an uncorrelated MIMO transmission configuration.

In some embodiments of the present application, the communication unit 510 is also used to:

receiving the calibration capability of the terminal device reported by the terminal device, where the calibration capability is used to indicate whether the terminal device has the capability of performing correlation calibration between multiple transmission paths of the terminal device based on a calibration window .

In some embodiments of the present application, the communication unit 510 is also used to:

If the terminal device is capable of performing correlation calibration between multiple transmission paths of the terminal device based on a calibration window, the terminal device is configured with the first calibration window.

Optionally, in some embodiments, the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system on chip. The aforementioned processing unit may be one or more processors.

It should be understood that the network device 500 according to the embodiment of the present application may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 500 are to realize the For the sake of brevity, the corresponding flow of the network device in the method embodiment shown will not be repeated here.

FIG. 11 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application. The communication device 600 shown in FIG. 11 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 11 , the communication device 600 may further include a memory 620 . Wherein, the processor 610 can invoke and run a computer program from the memory 620, so as to implement the method in the embodiment of the present application.

Wherein, the memory 620 may be an independent device independent of the processor 610 , or may be integrated in the processor 610 .

Optionally, as shown in FIG. 11 , the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or receive other Information or data sent by the device.

Wherein, the transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

Optionally, the communication device 600 may specifically be the network device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 600 may specifically be the mobile terminal/terminal device of the embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, for the sake of brevity , which will not be repeated here.

FIG. 12 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 700 shown in FIG. 7 includes a processor 710, and the processor 710 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.

Optionally, as shown in FIG. 12 , the chip 700 may further include a memory 720 . Wherein, the processor 710 can invoke and run a computer program from the memory 720, so as to implement the method in the embodiment of the present application.

Wherein, the memory 720 may be an independent device independent of the processor 710 , or may be integrated in the processor 710 .

Optionally, the chip 700 may also include an input interface 730 . Wherein, the processor 710 may control the input interface 730 to communicate with other devices or chips, specifically, may obtain information or data sent by other devices or chips.

Optionally, the chip 700 may also include an output interface 740 . Wherein, the processor 710 can control the output interface 740 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in the methods of the embodiment of the present application. For the sake of brevity, details are not repeated here.

Optionally, the chip can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application. For the sake of brevity, here No longer.

It should be understood that the chip mentioned in the embodiment of the present application may also be called a system-on-chip, a system-on-chip, a system-on-a-chip, or a system-on-a-chip.

Fig. 13 is a schematic block diagram of a communication system 900 provided by an embodiment of the present application. As shown in FIG. 13 , the communication system 900 includes a terminal device 910 and a network device 920 .

Wherein, the terminal device 910 can be used to realize the corresponding functions realized by the terminal device in the above method, and the network device 920 can be used to realize the corresponding functions realized by the network device in the above method. .

It should be understood that the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software. The above-mentioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components. Various methods, steps, and logic block diagrams disclosed in the embodiments of the present application may be implemented or executed. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Wherein, the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM ) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above-mentioned memory is illustrative but not restrictive. For example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.

The embodiment of the present application also provides a computer-readable storage medium for storing computer programs.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the methods of the embodiments of the present application. For brevity, here No longer.

Optionally, the computer-readable storage medium can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the various methods of the embodiments of the present application , for the sake of brevity, it is not repeated here.

The embodiment of the present application also provides a computer program product, including computer program instructions.

Optionally, the computer program product may be applied to the network device in the embodiment of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity, the Let me repeat.

Optionally, the computer program product can be applied to the mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in the methods of the embodiments of the present application, For the sake of brevity, details are not repeated here.

The embodiment of the present application also provides a computer program. Optionally, the computer program can be applied to the network device in the embodiment of the present application. When the computer program is run on the computer, the computer executes the corresponding process implemented by the network device in each method of the embodiment of the present application. For the sake of brevity , which will not be repeated here.

Optionally, the computer program can be applied to the mobile terminal/terminal device in the embodiment of the present application. When the computer program is run on the computer, the computer executes each method in the embodiment of the present application to be implemented by the mobile terminal/terminal device For the sake of brevity, the corresponding process will not be repeated here.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

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

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

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

If the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other various media that can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (94)

1. A method of wireless communication, comprising:

   the method comprises the steps that in a first calibration window, the terminal equipment calibrates correlation among a plurality of transmitting paths of the terminal equipment;

   and the terminal equipment performs data transmission based on the calibrated correlation of the plurality of transmitting paths.
2. The method according to claim 1, wherein the method further comprises:

   the terminal device sends a calibration window request to a network device, wherein the calibration window request is used for requesting the network device to configure the first calibration window.
3. The method of claim 2, wherein the terminal device sending a calibration window request to a network device comprises:

   and under the condition that a first timer does not work, the terminal equipment sends the calibration window request to the network equipment, wherein the terminal equipment is forbidden to initiate the calibration window request or stop the on-going correlation calibration during the operation of the first timer.
4. A method according to claim 3, wherein the first timer is configured by the network device.
5. The method according to any of claims 2-4, wherein the terminal device sending a calibration window request to a network device, comprising:

   and the terminal equipment sends the calibration window request to the network equipment under the condition that the correlation among the plurality of transmitting paths is lower than a preset condition.
6. The method of claim 5, wherein the correlation between the plurality of transmit paths being below a predetermined condition comprises at least one of:

   the relative amplitude variation among the signals of the plurality of transmitting paths is greater than a first threshold;

   the amount of relative phase change between the signals of the plurality of transmit paths is greater than a second threshold.
7. The method of any of claims 2-6, wherein the first calibration window is a non-periodic time window.
8. The method of claim 7, wherein a length of the first calibration window is predefined or configured by a network device.
9. The method of claim 8, wherein the calibration window request is further for requesting the network device to configure a length of the first calibration window, the length of the first calibration window being configured by the network device based on the calibration window request.
10. The method of any of claims 2-6, wherein the first calibration window is a periodic time window.
11. The method of claim 10, wherein a length of the first calibration window is predefined or configured by a network device; and/or

    The period of the first calibration window is predefined or, alternatively, configured by the network device.
12. The method of claim 11, wherein the calibration window request is further for requesting the network device to configure a length and/or period of the first calibration window, the length and/or period of the first calibration window being configured based on the calibration window request by the network device.
13. The method according to any one of claims 10-12, further comprising:

    the terminal device receives a window activation message sent by the network device, wherein the window activation message is used for activating the first calibration window in the periodic time window, and the window activation message is sent by the network device based on the calibration window request.
14. The method according to any one of claims 10-13, further comprising:

    And the terminal equipment receives a window deactivation message sent by the network equipment, wherein the window deactivation message is used for deactivating the periodic time window.
15. The method of claim 14, wherein the window activation message is sent by the network device based on a calibration complete message for the terminal device indicating that the terminal device has completed correlation calibration between multiple transmit paths of the terminal device.
16. The method according to any one of claims 1-15, further comprising:

    after the first calibration window, the terminal device receives the related MIMO transmission configuration sent by the network device.
17. The method of claim 16, wherein the terminal device receives the associated MIMO transmission configuration sent by the network device, comprising:

    if the initial MIMO transmission capability of the terminal equipment is irrelevant MIMO transmission capability, the terminal equipment receives partial relevant MIMO transmission configuration or full relevant MIMO transmission configuration sent by the network equipment; or alternatively

    And if the initial MIMO transmission capability of the terminal equipment is the partial related MIMO transmission capability, the terminal equipment receives the full related MIMO transmission configuration sent by the network equipment.
18. The method according to claim 16 or 17, wherein the terminal device performs data transmission based on the calibrated correlation of the plurality of transmission paths, comprising:

    and the terminal equipment performs data transmission based on the calibrated correlation of the plurality of transmitting channels according to the correlated MIMO transmission configuration.
19. The method according to any one of claims 16-18, further comprising:

    the terminal device sends a related MIMO transmission request to the network device, where the related MIMO transmission request is used to request the related MIMO transmission configuration to the network device, and the related MIMO transmission configuration is configured by the network device based on the related MIMO transmission request of the terminal device.
20. The method according to any one of claims 1-19, further comprising:

    and the terminal equipment sends first indication information to the network equipment under the condition that the correlation among the plurality of transmitting paths is lower than a preset condition, wherein the first indication information is used for indicating the terminal equipment to fall back to data transmission based on partial correlated MIMO transmission configuration or uncorrelated MIMO transmission configuration.
21. The method according to any one of claims 1-19, further comprising:

    the terminal equipment receives second indication information sent by the network equipment, wherein the second indication information is used for indicating the network equipment to fall back to data transmission based on partial related MIMO transmission configuration or uncorrelated MIMO transmission configuration.
22. The method according to any of claims 1-21, wherein the terminal device calibrates correlation between a plurality of transmit paths of the terminal device in a first calibration window, comprising:

    in the case that the initial MIMO transmission capability of the terminal device is a partial correlation MIMO transmission capability or an uncorrelated MIMO transmission capability, and data transmission is desired to be performed using a correlation MIMO transmission configuration, calibrating correlation among a plurality of transmission paths of the terminal device in the first calibration window; or alternatively

    In the case where the initial MIMO transmission capability of the terminal device is a fully correlated MIMO transmission capability and data transmission using a fully correlated MIMO transmission configuration is desired, correlation between a plurality of transmission paths of the terminal device is calibrated in the first calibration window.
23. The method according to any one of claims 1-22, further comprising:

    the terminal device reports calibration capability of the terminal device to a network device, wherein the calibration capability is used for indicating whether the terminal device has the capability of performing correlation calibration on a plurality of transmitting paths of the terminal device based on a calibration window.
24. The method of claim 23, wherein the network device is configured for the terminal device if the terminal device has the capability to perform correlation calibration between the plurality of transmit paths of the terminal device based on the calibration window.
25. A method of wireless communication, comprising:

    the method comprises the steps that network equipment receives a calibration window request sent by terminal equipment, wherein the calibration window request is used for requesting the network equipment to configure a first calibration window, and the first calibration window is used for calibrating correlation among a plurality of transmitting paths of the terminal equipment;

    the network device configures a first calibration window for the terminal device.
26. The method of claim 25, wherein the method further comprises:

    The network device configures the terminal device with a first timer, wherein during operation of the first timer, the terminal device is inhibited from initiating a calibration window request or from stopping an ongoing correlation calibration.
27. The method of claim 25 or 26, wherein the first calibration window is a non-periodic time window.
28. The method of claim 27, wherein a length of the first calibration window is predefined or configured by a network device.
29. The method of claim 28, wherein the calibration window request is further for requesting the network device to configure a length of the first calibration window, the length of the first calibration window being configured by the network device based on the calibration window request.
30. The method of claim 25 or 26, wherein the first calibration window is a periodic time window.
31. The method of claim 30, wherein the length of the first calibration window is predefined or configured by a network device; and/or

    The period of the first calibration window is predefined or, alternatively, configured by the network device.
32. The method of claim 31, wherein the calibration window request is further for requesting the network device to configure a length and/or period of the first calibration window, the length and/or period of the first calibration window being configured based on the calibration window request by the network device.
33. The method according to any one of claims 30-32, further comprising:

    the network device sends a window activation message to the terminal device, wherein the window activation message is used for activating the first calibration window in the periodic time window, and the window activation message is sent by the network device based on the calibration window request.
34. The method according to any one of claims 30-33, further comprising:

    the network device sends a window deactivation message to the terminal device, where the window deactivation message is used to deactivate the periodic time window.
35. The method of claim 34, wherein the window activation message is sent by the network device based on a calibration complete message for the terminal device indicating that the terminal device has completed correlation calibration between multiple transmit paths of the terminal device.
36. The method according to any one of claims 25-35, further comprising:

    after the first calibration window, the network device sends a related MIMO transmission configuration to the terminal device.
37. The method of claim 36, wherein if the initial MIMO transmission capability of the terminal device is an uncorrelated MIMO transmission capability, the correlated MIMO transmission configuration is a partially correlated MIMO transmission configuration or a fully correlated MIMO transmission configuration; or alternatively

    And if the initial MIMO transmission capability of the terminal equipment is partial related MIMO transmission capability, the related MIMO transmission configuration is full related MIMO transmission configuration.
38. The method according to claim 36 or 37, wherein the method further comprises:

    the network device receives a related MIMO transmission request sent by the terminal device, wherein the related MIMO transmission request is used for requesting the related MIMO transmission configuration from the network device, and the related MIMO transmission configuration is configured by the network device based on the related MIMO transmission request of the terminal device.
39. The method according to any one of claims 25-38, further comprising:

    The network device receives first indication information sent by the terminal device, wherein the first indication information is used for indicating the terminal device to fall back to data transmission based on partial related MIMO transmission configuration or uncorrelated MIMO transmission configuration.
40. The method according to any one of claims 25-38, further comprising:

    and the network equipment sends second indication information to the terminal equipment, wherein the second indication information is used for indicating the network equipment to fall back to data transmission based on the partial related MIMO transmission configuration or the uncorrelated MIMO transmission configuration.
41. The method of any one of claims 25-40, further comprising:

    the network device receives the calibration capability of the terminal device reported by the terminal device, wherein the calibration capability is used for indicating whether the terminal device has the capability of performing correlation calibration on a plurality of transmitting paths of the terminal device based on a calibration window.
42. The method of claim 41, further comprising:

    in case the terminal device is provided with the capability to perform a correlation calibration between a plurality of transmit paths of the terminal device based on a calibration window, the network device configures the first calibration window for the terminal device.
43. A terminal device, comprising:

    a processing unit, configured to calibrate correlation among a plurality of transmission paths of the terminal device in a first calibration window;

    and the communication unit is used for carrying out data transmission based on the correlation of the calibrated multiple transmission paths.
44. The terminal device of claim 43, wherein the communication unit is further configured to:

    and sending a calibration window request to a network device, wherein the calibration window request is used for requesting the network device to configure the first calibration window.
45. The terminal device of claim 44, wherein the communication unit is further configured to:

    and sending the calibration window request to a network device when a first timer is not working, wherein the terminal device is forbidden to initiate the calibration window request or stop the on-going correlation calibration during the operation of the first timer.
46. The terminal device of claim 45, wherein the first timer is configured by the network device.
47. The terminal device according to any of the claims 44-46, wherein the communication unit is further adapted to:

    And sending the calibration window request to the network equipment under the condition that the correlation among the plurality of transmitting paths is lower than a preset condition.
48. The terminal device of claim 47, wherein the correlation between the plurality of transmit paths being below a predetermined condition comprises at least one of:

    the relative magnitude of the signal between the plurality of transmit paths varies by more than a first threshold;

    the relative amount of phase change of the signals between the plurality of transmit paths is greater than a second threshold.
49. The terminal device of any of claims 44-48, wherein the first calibration window is an aperiodic time window.
50. The terminal device of claim 49, wherein the length of the first calibration window is predefined or configured by a network device.
51. The terminal device of claim 50, wherein the calibration window request is further for requesting the network device to configure a length of the first calibration window, the length of the first calibration window being configured by the network device based on the calibration window request.
52. The terminal device of any of claims 44-48, wherein the first calibration window is a periodic time window.
53. The terminal device of claim 52, wherein a length of the first calibration window is predefined or configured by a network device; and/or

    The period of the first calibration window is predefined or, alternatively, configured by the network device.
54. The terminal device of claim 53, wherein the calibration window request is further for requesting the network device to configure a length and/or period of the first calibration window, the length and/or period of the first calibration window being configured by the network device based on the calibration window request.
55. The terminal device according to any of the claims 52-54, wherein the communication unit is further adapted to:

    and receiving a window activation message sent by a network device, wherein the window activation message is used for activating the first calibration window in the periodic time window, and the window activation message is sent by the network device based on the calibration window request.
56. The terminal device according to any of the claims 52-55, wherein the communication unit is further adapted to:

    and receiving a window deactivation message sent by the network equipment, wherein the window deactivation message is used for deactivating the periodic time window.
57. The terminal device of claim 56, wherein the window activation message is sent by the network device based on a calibration complete message for the terminal device indicating that the terminal device has completed correlation calibration between multiple transmit paths of the terminal device.
58. The terminal device according to any of the claims 43-57, wherein the communication unit is further adapted to:

    after the first calibration window, receiving a related MIMO transmission configuration sent by the network device.
59. The terminal device of claim 58, wherein the communication unit is further configured to:

    if the initial MIMO transmission capability of the terminal equipment is irrelevant MIMO transmission capability, receiving partial relevant MIMO transmission configuration or full relevant MIMO transmission configuration sent by the network equipment; or alternatively

    And if the initial MIMO transmission capacity of the terminal equipment is the partial related MIMO transmission capacity, receiving the full related MIMO transmission configuration sent by the network equipment.
60. The terminal device of claim 58 or 59, wherein the communication unit is further configured to:

    and according to the related MIMO transmission configuration, carrying out data transmission based on the calibrated correlation of the plurality of transmitting channels.
61. The terminal device according to any of the claims 58-60, wherein the communication unit is further adapted to: transmitting a related MIMO transmission request to a network device, the related MIMO transmission request being used to request the related MIMO transmission configuration from the network device, the related MIMO transmission configuration being configured by the network device based on the related MIMO transmission request of the terminal device.
62. The terminal device according to any of the claims 43-61, wherein the communication unit is further adapted to: and under the condition that the correlation among the plurality of transmitting paths is lower than a preset condition, sending first indication information to network equipment, wherein the first indication information is used for indicating the terminal equipment to fall back to data transmission based on partial correlated MIMO transmission configuration or uncorrelated MIMO transmission configuration.
63. The terminal device according to any of the claims 43-61, wherein the communication unit is further adapted to:

    and receiving second indication information sent by the network equipment, wherein the second indication information is used for indicating the network equipment to fall back to data transmission based on the partial related MIMO transmission configuration or the uncorrelated MIMO transmission configuration.
64. The terminal device of any of claims 43-63, wherein the processing unit is further configured to:

    in the case that the initial MIMO transmission capability of the terminal device is a partial correlation MIMO transmission capability or an uncorrelated MIMO transmission capability, and data transmission is desired to be performed using a correlation MIMO transmission configuration, calibrating correlation among a plurality of transmission paths of the terminal device in the first calibration window; or alternatively

    In the case where the initial MIMO transmission capability of the terminal device is a fully correlated MIMO transmission capability and data transmission using a fully correlated MIMO transmission configuration is desired, correlation between a plurality of transmission paths of the terminal device is calibrated in the first calibration window.
65. The terminal device of any of claims 43-64, wherein the communication unit is further configured to:

    and reporting the calibration capability of the terminal equipment to network equipment, wherein the calibration capability is used for indicating whether the terminal equipment has the capability of performing correlation calibration on a plurality of transmitting paths of the terminal equipment based on a calibration window.
66. The terminal device of claim 65, wherein the first calibration window is configured for the terminal device by the network device if the terminal device has the capability to perform correlation calibration between multiple transmit paths of the terminal device based on the calibration window.
67. A network device, comprising:

    a communication unit, configured to receive a calibration window request sent by a terminal device, where the calibration window request is used to request the network device to configure a first calibration window, where the first calibration window is used to calibrate correlation between multiple transmission paths of the terminal device by the terminal device; and

    and configuring a first calibration window for the terminal equipment.
68. The network device of claim 67, wherein the communication unit is further configured to:

    and configuring a first timer for the terminal equipment, wherein during the operation of the first timer, the terminal equipment is forbidden to initiate a calibration window request or stop the ongoing correlation calibration.
69. The network device of claim 67 or 68, wherein the first calibration window is an aperiodic time window.
70. The network device of claim 69, wherein the length of the first calibration window is predefined or configured by the network device.
71. The network device of claim 70, wherein the calibration window request is further for requesting the network device to configure a length of the first calibration window, the length of the first calibration window being configured by the network device based on the calibration window request.
72. The network device of claim 67 or 68, wherein the first calibration window is a periodic time window.
73. The network device of claim 72, wherein the length of the first calibration window is predefined or configured by a network device; and/or

    The period of the first calibration window is predefined or, alternatively, configured by the network device.
74. The network device of claim 73, wherein the calibration window request is further for requesting the network device to configure a length and/or period of the first calibration window, the length and/or period of the first calibration window being configured by the network device based on the calibration window request.
75. The network device of any one of claims 72-74, wherein the communication unit is further configured to:

    and sending a window activation message to the terminal equipment, wherein the window activation message is used for activating the first calibration window in the periodic time window, and the window activation message is sent by the network equipment based on the calibration window request.
76. The network device of any one of claims 72-75, wherein the communication unit is further configured to:

    And sending a window deactivation message to the terminal equipment, wherein the window deactivation message is used for deactivating the periodic time window.
77. The network device of claim 76, wherein the window activation message is sent by the network device based on a calibration complete message by the terminal device indicating that the terminal device has completed correlation calibration between multiple transmit paths of the terminal device.
78. The network device of any one of claims 67-77, wherein the communication unit is further configured to:

    and after the first calibration window, sending the related MIMO transmission configuration to the terminal equipment.
79. The network device of claim 78, wherein if the initial MIMO transmission capability of the terminal device is an uncorrelated MIMO transmission capability, the correlated MIMO transmission configuration is a partially correlated MIMO transmission configuration or a fully correlated MIMO transmission configuration; or alternatively

    And if the initial MIMO transmission capability of the terminal equipment is partial related MIMO transmission capability, the related MIMO transmission configuration is full related MIMO transmission configuration.
80. The network device of claim 78 or 79, wherein the communication unit is further configured to:

    And receiving a related MIMO transmission request sent by the terminal equipment, wherein the related MIMO transmission request is used for requesting the related MIMO transmission configuration from the network equipment, and the related MIMO transmission configuration is configured by the network equipment based on the related MIMO transmission request of the terminal equipment.
81. The network device of any one of claims 67-80, wherein the communication unit is further configured to:

    and receiving first indication information sent by the terminal equipment, wherein the first indication information is used for indicating the terminal equipment to fall back to data transmission based on partial related MIMO transmission configuration or uncorrelated MIMO transmission configuration.
82. The network device of any one of claims 67-80, wherein the communication unit is further configured to:

    and sending second indication information to the terminal equipment, wherein the second indication information is used for indicating the network equipment to fall back to data transmission based on the partial related MIMO transmission configuration or the unrelated MIMO transmission configuration.
83. The network device of any one of claims 67-82, wherein the communication unit is further configured to:

    and receiving the calibration capability of the terminal equipment, which is reported by the terminal equipment, wherein the calibration capability is used for indicating whether the terminal equipment has the capability of performing correlation calibration on a plurality of transmitting paths of the terminal equipment based on a calibration window.
84. The network device of claim 83, wherein the communication unit is further configured to:

    the first calibration window is configured for the terminal device in case the terminal device is provided with the capability to perform a correlation calibration between a plurality of transmit paths of the terminal device based on the calibration window.
85. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 1 to 24.
86. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 24.
87. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 24.
88. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 24.
89. A computer program, characterized in that the computer program causes a computer to perform the method according to any one of claims 1 to 24.
90. A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 25 to 42.
91. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 25 to 42.
92. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 25 to 42.
93. A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 25 to 42.
94. A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 25 to 42.