CN116711271A

CN116711271A - Wireless communication method, terminal equipment and network equipment

Info

Publication number: CN116711271A
Application number: CN202180090565.1A
Authority: CN
Inventors: 邢金强
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2023-09-05
Also published as: WO2022236487A1

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 equipment and network equipment

Technical Field

The embodiment of the application relates to the field of communication, in particular to a wireless communication method, terminal equipment and network equipment.

Background

For terminals with multiple transmit antennas, the uplink may support multiple-input multiple-output (Multiple Input Multiple Output, MIMO) multi-stream transmission. Uplink MIMO includes both types of codebook-based MIMO transmission and non-codebook-based MIMO transmission. For codebook-based MIMO transmissions, the codebook is typically classified into a full-correlation (full-coherence) codebook, a partial-correlation (partial-coherence) codebook, and an uncorrelated (non-coherence) codebook.

In practical applications, since the terminal device may operate in many situations, such as high temperature, low temperature, high voltage, low voltage, and the like, different environments. Therefore, it is difficult for the terminal device to maintain the full-correlation MIMO transmission capability, which affects the performance of the terminal device, and therefore, how to maintain the correlation MIMO transmission to improve the performance of the terminal device is an urgent problem to be solved.

Disclosure of Invention

The application provides a wireless communication method, a terminal device and a network device, wherein the terminal device calibrates the correlation of a plurality of transmitting channels based on a calibration window, so that the correlation MIMO transmission can be carried out through the plurality of transmitting channels with the correlation, and the uplink transmission performance of the terminal device is improved.

In a first aspect, a method of wireless communication is provided, 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.

In a second aspect, there is provided 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.

In a third aspect, a terminal device is provided for performing the method in the first aspect or each implementation manner thereof.

Specifically, the terminal device comprises functional modules for performing the method of the first aspect or its implementation manner.

In a fourth aspect, a network device is provided for performing the method of the second aspect or implementations thereof.

In particular, the network device comprises functional modules for performing the method of the second aspect or implementations thereof described above.

In a fifth aspect, a terminal device is provided comprising a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method in the first aspect or various implementation manners thereof.

In a sixth aspect, a network device is provided that includes a processor and a memory. The memory is for storing a computer program and the processor is for calling and running the computer program stored in the memory for performing the method of the second aspect or implementations thereof described above.

A seventh aspect provides a chip for implementing the method of any one of the first to second aspects or each implementation thereof.

Specifically, the chip includes: a processor for calling and running a computer program from a memory, causing a device in which the apparatus is installed to perform the method as in any one of the first to second aspects or implementations thereof described above.

In an eighth aspect, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the method of any one of the above-described first to second aspects or implementations thereof.

A ninth aspect provides a computer program product comprising computer program instructions for causing a computer to perform the method of any one of the first to second aspects or implementations thereof.

In a tenth aspect, there is provided a computer program which, when run on a computer, causes the computer to perform the method of any one of the first to second aspects or implementations thereof.

Therefore, the terminal equipment calibrates the correlation of a plurality of transmitting channels of the terminal equipment based on the calibration window, so that the correlation among the plurality of transmitting channels is improved, and further, the correlated MIMO transmission can be carried out based on the plurality of transmitting channels with correlation, thereby being beneficial to improving the uplink transmission performance of the terminal equipment.

Drawings

Fig. 1 is a schematic diagram of a communication system architecture according to an embodiment of the present application.

Fig. 2 is a schematic diagram of a structure of a terminal device having two transmission paths.

Fig. 3 is a schematic interaction diagram of a method of wireless communication provided in accordance with 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 one embodiment of the application.

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

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

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

Fig. 9 is a schematic block diagram of a terminal device 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 in accordance with an embodiment of the present application.

Detailed Description

The following description of the technical solutions according to the embodiments of the present application will be given with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art to which the application pertains without inventive faculty, are intended to fall within the scope of the application.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: global system for mobile communications (Global System of Mobile communication, GSM), 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, evolved system of NR system, LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum, NR-U) system on unlicensed spectrum, non-terrestrial communication network (Non-Terrestrial Networks, NTN) system, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Networks, WLAN), wireless fidelity (Wireless Fidelity, wiFi), fifth Generation communication (5 th-Generation, 5G) system, or other communication system, etc.

Generally, the number of connections supported by the conventional communication system is limited and easy to implement, however, as the communication technology advances, the mobile communication system will support not only conventional communication but also, for example, device-to-Device (D2D) communication, machine-to-machine (Machine to Machine, M2M) communication, machine type communication (Machine Type Communication, MTC), inter-vehicle (Vehicle to Vehicle, V2V) communication, or internet of vehicles (Vehicle to everything, V2X) communication, etc., to which the embodiments of the present application can also be applied.

Optionally, the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a Stand Alone (SA) fabric scenario.

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

Embodiments of the present application are described in connection with a network device and a terminal device, where the terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a User terminal, a wireless communication device, a User agent, a User Equipment, or the like.

The terminal device may be a STATION (ST) in a WLAN, may be a cellular telephone, a cordless telephone, 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) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in a next generation communication system such as an NR network, or a terminal device in a future evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.

In the embodiment of the application, the terminal equipment can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; can also be deployed on the water surface (such as ships, etc.); but may also be deployed in the air (e.g., on aircraft, balloon, satellite, etc.).

In the embodiment of the present application, the terminal device may be a Mobile Phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an augmented Reality (Augmented Reality, AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in unmanned driving (self driving), a wireless terminal device in remote medical (remote medical), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation security (transportation safety), a wireless terminal device in smart city (smart city), or a wireless terminal device in smart home (smart home), and the like.

By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also realizes a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

In the embodiment of the present application, the network device may be a device for communicating with a mobile device, where the network device may be an Access Point (AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA, a base station (NodeB, NB) in WCDMA, an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, a relay station or an Access Point, a vehicle device, a wearable device, a network device (gNB) in NR network, a network device in future evolved PLMN network, or a network device in NTN network, etc.

By way of example, and not limitation, in embodiments of the present application, a network device may have a mobile nature, e.g., the network device may be a mobile device. Alternatively, the network device may be a satellite, a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite, or the like. Alternatively, the network device may be a base station disposed on land, in a water area, or the like.

In the embodiment of the present application, a network device may provide services for a cell, where a terminal device communicates with the network device through a transmission resource (e.g., a frequency domain resource, or a spectrum resource) used by the cell, where the cell may be a cell corresponding to the network device (e.g., a base station), and the cell may belong to a macro base station, or may belong to a base station corresponding to a Small cell (Small cell), where the Small cell may include: urban cells (Metro cells), micro cells (Micro cells), pico cells (Pico cells), femto cells (Femto cells) and the like, and the small cells have the characteristics of small coverage area and low transmitting power and are suitable for providing high-rate data transmission services.

An exemplary communication system 100 to which embodiments of the present application may be applied is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminal devices located within the coverage area.

Fig. 1 illustrates one network device and two terminal devices by way of example, and the communication system 100 may alternatively include multiple network devices and may include other numbers of terminal devices within the coverage area of each network device, as embodiments of the application are not limited in this regard.

Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited by the embodiment of the present application.

It should be understood that a device having a communication function in a network/system according to an 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 device may include a network device 110 and a terminal device 120 with communication functions, where the network device 110 and the terminal device 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, 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 used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated 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, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

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

In the embodiment of the present application, the "predefining" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in devices (including, for example, terminal devices and network devices), and the present application is not limited to the specific implementation manner thereof. Such as predefined may refer to what is 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, may include an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in the present application.

In order to facilitate understanding of the technical scheme of the embodiment of the present application, MIMO calculation related to the present application is described.

For terminal devices with multiple transmit antennas, the uplink may support MIMO multi-stream transmission. Uplink MIMO includes codebook-based MIMO transmissions and non-codebook-based MIMO transmissions. For codebook-based MIMO transmissions, the codebook is typically classified into a full-correlation (full-coherence) codebook, a partial-correlation (partial-coherence) codebook, and an uncorrelated (non-coherence) codebook. Alternatively, codebook-based MIMO transmissions may include fully-correlated MIMO transmissions, partially-correlated MIMO transmissions, and uncorrelated MIMO transmissions.

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

TABLE 1

The MIMO transmission correlation of a terminal device is measured based on the relative phase offset and the relative power (or relative amplitude) offset between the signals of the multiple transmit paths. The full correlation codebook transmission requires that the terminal equipment can keep the relative changes of power and phase among a plurality of transmitting channels within a certain time and can be controlled within a certain range, so that the full correlation codebook can be adopted for more efficient MIMO transmission. The network device may configure the terminal device with a corresponding type of codebook, such as a full-correlation (full-correlation) codebook, a partial-correlation (partial-correlation) codebook, or an uncorrelated (non-correlation) codebook, according to the MIMO transmission capability of the terminal device.

In some scenarios, the terminal device may report its MIMO transmission capability at an initial time (e.g. at random access), i.e. whether the supported codebook type is a full-correlation (full-correlation) codebook or a partial-correlation (partial-correlation) codebook or an uncorrelated (non-correlation) codebook. The supported codebook types will remain unchanged during subsequent communications.

As shown in fig. 2, if the terminal device has two transmission paths, the MIMO transmission correlation mainly means a deviation in relative amplitude and relative phase between signals of the transmission path 1 and the transmission path 2. However, there are many factors affecting the MIMO transmission correlation of the terminal device, such as high temperature, low temperature, high voltage, low voltage, etc., and since the terminal device needs to ensure that the MIMO transmission correlation is the same in all scenarios, the terminal device can only report that the terminal device has uncorrelated MIMO transmission capability even if it can support full correlation or partial correlation transmission in some cases. In addition, amplitude or phase deviations among multiple transmitting branches within a terminal device may accumulate over time, eventually resulting in deviations exceeding the requirements of correlated or partially correlated MIMO transmissions that are applicable only to uncorrelated MIMO transmissions.

Therefore, it is difficult for the terminal device to maintain the full-correlation MIMO transmission capability, which also results in that most of the terminals do not have the full-correlation MIMO transmission capability, which affects the performance of the terminal device, and therefore, how to maintain the correlated MIMO transmission capability of the terminal device to improve the performance of the terminal device is an urgent problem to be solved.

In order to facilitate understanding of the technical solution of the embodiments of the present application, the technical solution of the present application is described in detail below through specific embodiments. The above related technologies may be optionally combined with the technical solutions of the embodiments of the present application, which all belong to the protection scope of the embodiments of the present application. Embodiments of the present application include at least some of the following.

Fig. 3 is a schematic interaction diagram of a method 200 of wireless communication according to an embodiment of the application, as shown in fig. 3, the method 200 comprising:

s210, in a first calibration window, the terminal equipment calibrates the correlation among a plurality of transmitting paths of the terminal equipment;

s220, the terminal equipment performs data transmission based on the calibrated correlation of the plurality of transmitting 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, and in other embodiments, may include more correlation levels, where the present application is only illustrated by way of example with respect to the above three levels, 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 uncorrelated MIMO transmission configuration, partial correlated MIMO transmission may refer to data transmission based on partial correlated MIMO transmission configuration, and full correlated MIMO transmission may refer to data transmission based on full correlated MIMO transmission configuration.

Alternatively, the uncorrelated MIMO transmission configuration may include an uncorrelated codebook (or codebook set), the partially correlated MIMO transmission configuration may include a partially correlated codebook (or codebook set), and the fully correlated MIMO transmission configuration may include a fully correlated codebook (or codebook set).

It should be understood that in the embodiment of the present application, if the terminal device indicates that the partially correlated codebook set is supported, the terminal device should be able to support the non-correlated codebook set, and if the terminal device supports the fully correlated codebook set, the terminal device should support the partially correlated and non-correlated codebook sets. In other words, if the terminal device supports fully correlated MIMO transmission, the terminal device also supports partially 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 the embodiment of the application, the terminal equipment corrects the correlation among the plurality of transmitting channels so that the relative amplitude and the relative phase variation among the signals of the plurality of transmitting channels are in a certain range, thereby meeting the requirement of related MIMO transmission, further carrying out data transmission based on the related MIMO transmission mode and improving the uplink transmission performance of the terminal equipment.

Optionally, in some embodiments, the terminal device may report an initial MIMO transmission capability to the network device, for example, the initial MIMO transmission capability may be a full-correlation MIMO transmission capability, a partial-correlation MIMO transmission capability, or an uncorrelated MIMO transmission capability. Alternatively, the terminal device may report to the network device the codebook types supported by the terminal device, for example, a full correlation codebook, a partial correlation codebook, or an uncorrelated codebook, etc.

In some scenarios, since the terminal device cannot guarantee that the MIMO transmission capability is the same in all scenarios, only reporting with uncorrelated MIMO transmission capability is possible even if the terminal device is capable of supporting fully correlated MIMO transmission or partially correlated MIMO transmission in partial cases.

In some embodiments of the present application, correlation between the plurality of transmit paths is enhanced by calibrating the correlation between the plurality of transmit paths. For example, if the correlation between the plurality of transmission paths before calibration is uncorrelated, the correlation between the plurality of transmission paths after calibration may be a partial correlation or a full correlation. For another example, if the correlation between the plurality of transmit paths before calibration is a partial correlation, the correlation between the plurality of transmit paths after calibration may be a full correlation.

It should be appreciated that in embodiments of the present application, the correlation between the plurality of transmit paths may be determined based on the relative amount of phase change and the relative amount of amplitude change between the signals of the plurality of transmit paths.

In some embodiments of the present application, the calibrating correlation between the plurality of transmission paths of the terminal device may refer to: the amplitudes and phases of the signals of the plurality of transmission paths are adjusted so that the amounts of variation in the relative amplitudes and relative phases between the signals of the plurality of transmission paths are within a target range.

In some embodiments, the full correlation codebook transmission requires that the terminal device be able to maintain the relative amplitude and relative phase between the signals of the multiple transmit paths within a first range for a period of time, and the partial correlation codebook transmission also requires that the terminal device be able to maintain the relative amplitude and relative phase between the signals of the multiple transmit paths within a second range for a period of time.

Alternatively, the target range may be a first range required by the full correlation codebook, or may be a second range required by the partial correlation 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 procedure of a terminal device illustrated with two transmit paths. Specifically, the terminal device may include a control unit (which may be a baseband portion of the terminal device), two Power Amplifiers (PA) respectively corresponding to the two transmit paths, i.e., PA1 and PA2, and a mixer for receiving the calibration signal and the local oscillator signal (LO), and an amplitude and phase comparison unit for comparing the relative amplitudes and relative phases of the signals of the two transmit paths.

The calibration procedure of the terminal device to the transmit path may be: firstly, a control unit controls to transmit a calibration signal on a target frequency band, the calibration signal is input to a transmitting channel 1 and a transmitting channel 2, the amplitude and the phase of signals at the output ends of the transmitting channel 1 and the transmitting channel 2 are compared to obtain amplitude deviation values and phase deviation values between the signals, the amplitude deviation values and the phase deviation values are input to the control unit, and the amplitude and the phase of the signals transmitted by the transmitting channel are used for adjusting the amplitude and the phase of the signals transmitted by the transmitting channel so that the variation of the relative amplitude and the relative phase between the signals of the two transmitting channels is in a target range, thereby meeting the requirements of related MIMO transmission.

In some embodiments, the target frequency band may be an operating frequency band of the terminal device, or may also be other frequency bands configured on the terminal device, for example, millimeter wave frequency bands, 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 application, a calibration window is configured for the terminal equipment through the network equipment, and the terminal equipment executes correlation calibration or MIMO self-calibration among the plurality of transmitting paths in the calibration window.

Optionally, the terminal device suspends normal data transmission between the terminal device and the network device while performing correlation calibration between the plurality of paths in the first calibration window. For example, the network device does not schedule the network device for 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 application, the first calibration window is configured by the network device based on a calibration window request of the terminal device. For example, in case the correlation between the plurality of transmit paths is below a preset condition, the terminal device requests to the network device to configure the first calibration window.

In some embodiments, the terminal device may monitor a change in relative amplitude and relative phase between signals of the plurality of transmit chains, and request the network device to configure the first calibration window if a change in relative amplitude of signals between the plurality of transmit paths is greater than a first threshold and/or a change in relative phase of signals between the plurality of transmit paths is greater than a second threshold.

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, uplink medium 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 autonomously to the terminal device, e.g. the network device may configure the first calibration window to the terminal device in case of a degradation of performance of the associated MIMO transmission. Alternatively, the performance degradation of the related MIMO transmission may include, for example, but not limited to, the throughput of the related MIMO transmission being less than a certain threshold.

In still other 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, and in the case that the period of the calibration window arrives, both the terminal device and the network device know that the terminal device will perform correlation calibration between the plurality of transmission paths in a subsequent certain time, so that normal data transmission between the two is suspended in the certain time.

It should be understood that the configuration manner of the first calibration window is merely an example, and in other embodiments, the terminal device may perform MIMO self-calibration based on the first calibration window under other situations where there is a need for MIMO self-calibration, which is not limited to this aspect of the present application.

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

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

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

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

the terminal device reports the calibration capability of the terminal device to the network device, wherein the calibration capability is used for indicating whether the terminal device has the capability of performing correlation calibration among a plurality of transmitting paths of the terminal device based on a calibration window.

In some embodiments, the network device configures the first calibration window for the terminal device in the event that the terminal device has the capability to perform correlation calibration between multiple transmit paths of the terminal device based on the calibration window.

In some embodiments of the present application, in the case where the initial MIMO transmission capability of the terminal device is an uncorrelated MIMO transmission capability, and it is desirable to employ (or keep employing) data transmission based on a correlated MIMO transmission mode (e.g., a partially correlated MIMO transmission mode or a fully correlated MIMO transmission mode), correlation between multiple transmit paths of the terminal device is calibrated based on a calibration window. For example, sending the calibration window request to a network device.

In other embodiments of the present application, where the initial MIMO transmission capability of the terminal device is a partially correlated MIMO transmission capability, and it is desired to employ (or remain employed) a correlated MIMO transmission mode (e.g., a partially correlated MIMO transmission mode or a fully correlated MIMO transmission mode) for data transmission, correlation between multiple transmit paths of the terminal device is calibrated based on a calibration window. For example, sending the calibration window request to a network device.

In still other embodiments of the present application, in the case where the initial MIMO transmission capability of the terminal device is a fully correlated MIMO transmission capability, and it is desired to employ (or remain employed in) a fully correlated MIMO transmission mode for data transmission, correlation between multiple transmit paths of the terminal device is calibrated based on a calibration window. For example, sending the calibration window request to a network device.

Optionally, in some embodiments, the network device may further configure the terminal device with a transmit power limit for the calibration signal. I.e. the maximum transmit power of the calibration signal transmitted in said first calibration window. By configuring the transmit power limit, interference of the terminal device to other UEs when performing correlation calibration can be reduced.

In some embodiments of the present application, as shown in fig. 5, the first calibration window is a non-periodic time window. The terminal device performs correlation calibration between a plurality of transmission paths within a 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 which case the terminal device only needs to send a calibration window request to the network device, and the network device may configure the calibration window according to the fixed time length.

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

In some embodiments, the length of the first calibration window may be configured by the network device based on a request of the terminal device, for example, the calibration window request may be used to request the network device to configure the length of the first calibration window while the calibration window request is used to request the network device to configure the first calibration window. For example, the calibration window request may include a length of a first calibration window desired by the terminal device. Optionally, the network device may configure the length of the first calibration window according to the capability or implementation requirement of the terminal device, or may also configure the length of the first calibration window desired 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 between a plurality of transmission paths 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, alternatively, configured by the network device.

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

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

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

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

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.

Alternatively, the first calibration window may comprise one of the periodic time windows, or may also comprise a plurality of time windows.

In some embodiments, the network device may activate a periodic calibration window based on a request of the terminal device, e.g., in case a calibration window request of the terminal device is received, activate a periodic calibration window.

In other embodiments, for example, the network device may activate the periodic calibration window in the event of degraded performance of the associated MIMO transmission. Alternatively, the performance degradation of the related MIMO transmission may include, for example, but not limited to, the throughput of the related MIMO transmission being less than a certain threshold.

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

and the network equipment sends a window deactivation message to the terminal equipment, wherein the window deactivation message is used for deactivating the periodic time window.

Alternatively, after deactivating the periodic time window, the terminal device may conduct 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 complete message of the terminal device, the calibration complete message indicating that the terminal device has completed correlation calibration between multiple transmit paths of the terminal device. I.e. the network device deactivates the periodic calibration window after the end device performs the correlation calibration.

In other embodiments, the window activation message is autonomously sent by the network device. For example, the network device may deactivate the periodic calibration window in case of an emergency traffic transmission requirement, so that traffic transmission may be performed in time.

after the first calibration window, the terminal device receives the related MIMO transmission configuration sent by the network device.

By calibrating the correlation between the plurality of transmit paths, the correlation between the plurality of transmit paths is improved, for example, to a partial correlation or a full correlation, or, after calibration, the partial correlation or the full correlation between the plurality of transmit paths may be achieved. And uplink transmission is further carried out based on a plurality of transmission channels with correlation, so that the uplink transmission performance is improved.

Alternatively, the correlated MIMO transmission configuration may comprise a partial correlation codebook or a full correlation codebook.

For example, the initial MIMO transmission capability of the terminal device is an uncorrelated MIMO transmission capability, and the network device may configure the terminal device with a partially correlated MIMO transmission configuration or a fully correlated MIMO transmission configuration. That is, by calibrating the correlation among the multiple transmission paths, the terminal device can be improved from adopting uncorrelated MIMO transmission to adopting partially correlated MIMO transmission or fully correlated MIMO transmission, which is beneficial to improving uplink MIMO transmission performance.

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, by calibrating the correlation among the multiple transmission paths, the terminal device can be improved from adopting the partial correlation MIMO transmission to adopting the full correlation MIMO transmission, which is beneficial to improving the uplink MIMO transmission performance.

and the terminal equipment sends a related MIMO transmission request to the network equipment.

Optionally, the related MIMO transmission request is used to request the related MIMO transmission configuration from the network device, or the related MIMO transmission request is used to request a related MIMO transmission, for example, a full related MIMO transmission or a partial MIMO transmission.

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

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

and the terminal equipment sends first indication information to the network equipment, wherein the first indication information is used for indicating the terminal equipment to fall back to data transmission based on the partial related MIMO transmission configuration or the uncorrelated MIMO transmission configuration.

In some embodiments, the terminal device may send the first indication information to the network device in a case that a correlation between the plurality of transmission paths is lower than a preset condition.

For example, the terminal device may monitor a relative change in amplitude and phase of signals between the plurality of transmit chains, and indicate to the network device to fall back to a partially correlated MIMO transmission or an uncorrelated MIMO transmission if the relative amplitude change in signals between the plurality of transmit paths is greater than a first threshold and/or the relative phase change in signals between the plurality of transmit paths is greater than a second threshold.

As an example, the initial MIMO transmission capability of the terminal device is an uncorrelated MIMO transmission capability, and the network device is indicated to fall back to uncorrelated MIMO transmission if the correlation between the plurality of transmission paths is below a preset condition.

As an example, the initial MIMO transmission capability of the terminal device is a partially correlated MIMO transmission capability, and in case the correlation between the plurality of transmission paths is below a preset condition, a fallback to the partially correlated MIMO transmission or an uncorrelated MIMO transmission is indicated to the network device.

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 a MIMO transmission mode corresponding to the initial MIMO transmission capability or fall back to perform data transmission based on a partial relevant MIMO transmission configuration or an irrelevant MIMO transmission configuration.

In some embodiments, the network device may determine whether to fall back to a partially correlated MIMO transmission or an uncorrelated MIMO transmission based on a performance change of the correlated MIMO transmission. For example, in case the throughput of the correlated MIMO transmission is below a certain threshold, a backoff is performed to a partial correlated MIMO transmission or to an uncorrelated MIMO transmission.

In some embodiments, the second indication information may be configured for MIMO transmission by the network device to reconfigure to the terminal device. For example, after the first calibration window, if the terminal device receives the MIMO transmission configuration related to the network device and then receives the MIMO transmission configuration with lower correlation sent by the network device, the network device may consider that the network device instructs to fall back to the MIMO transmission with lower correlation.

As an example, if after the first calibration window, the terminal device receives a full-correlated MIMO transmission configuration of the network device, and then receives an uncorrelated MIMO transmission configuration or a partially correlated MIMO transmission configuration of the network device, in this case, the network device may be considered to instruct to fall back to the uncorrelated MIMO transmission or the partially correlated MIMO transmission, and further, the terminal device may perform the uncorrelated MIMO transmission or the partially correlated MIMO transmission based on the uncorrelated MIMO transmission configuration or the partially correlated MIMO transmission configuration.

In further embodiments, the second indication information may be displayed indication information for indicating that the network device is to fall back to a partially correlated MIMO transmission or an uncorrelated MIMO transmission. For example, the second indication information may be 1 bit, and a different value of the 1 bit is used to indicate whether to fall back to the partially correlated MIMO transmission or the uncorrelated MIMO transmission. For another example, the second indication information may indicate whether to fall back to a partially correlated MIMO transmission or an uncorrelated MIMO transmission by a bit map (bitmap) manner.

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

In the example of fig. 7, the MIMO transmission capability of the terminal device at the time of initial reporting is a partial correlation MIMO transmission capability or an uncorrelated MIMO transmission capability. Or may be a fully correlated MIMO transmission capability, and in the following, a case where a terminal device has a partially correlated or uncorrelated MIMO transmission capability will be described as well as being applicable to a terminal device having a fully correlated MIMO transmission capability.

In some scenarios, in order to be able to employ correlated MIMO transmission in at least some scenarios, the terminal device may boost the correlation between multiple transmit paths, e.g. to achieve a full correlation, through the MIMO self-calibration procedure of the embodiments of the present application. The MIMO self-calibration process refers to the related description above, and will not be described herein.

Since the MIMO self-calibration process requires input of a calibration signal and external transmission of the calibration signal after passing through a transmission path, since the operating frequency band of the terminal device is mostly an authorized frequency band, this means that the terminal device cannot transmit a signal without being licensed by the network device. The MIMO self-calibration procedure described above therefore needs to be performed within a specific time window (e.g., the first calibration window).

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

s301, the terminal equipment reports calibration capability to the network equipment, wherein the calibration capability is used for indicating the capability of the terminal equipment to perform correlation calibration on a plurality of transmitting channels of the terminal equipment based on a calibration window.

For example, the terminal device may report the calibration capability in the case of having multiple transmit paths, or associated MIMO transmission requirements.

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

s302, the terminal equipment sends a calibration window request to the network equipment, wherein the calibration window request is used for requesting the network equipment to configure the first calibration window.

For example, the terminal device may send the calibration window request in case the correlation of the plurality of transmission paths is below a preset condition.

In other embodiments, the first calibration window may also be autonomously configured by the network device. The first calibration window is configured, for example, by a network device in case of degraded performance of the associated MIMO transmission with the terminal device.

In some embodiments, the first calibration window is a non-periodic time window. For example, the length of the first calibration window may be fixed or configured by the network device, e.g. the terminal device requests the network device to configure the length of the first calibration window at the same time as requesting the 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 the network device.

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

As an example, the terminal device requests the network device to configure the length and/or period of the first calibration window while requesting to configure 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 be configured at the same time as the first calibration window.

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

Optionally, in S303, the network device may further configure the terminal device with a transmit power limitation of the calibration signal, i.e. the maximum transmit power of the calibration signal sent in the first calibration window.

Further, S304, the terminal device performs correlation calibration between the plurality of 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.

Alternatively, the related MIMO transmission request may be a partial related MIMO transmission request or a full related MIMO transmission request.

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

s306, after the first calibration window, the terminal equipment receives the related MIMO transmission configuration sent by the network equipment.

Alternatively, the relevant MIMO transmission configuration may be configured based on the relevant MIMO transmission request in S305, or may be configured autonomously 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, thereby configuring the corresponding MIMO transmission configuration.

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

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

In some embodiments, the method 200 may include:

s307, the terminal device indicates to the network device to fall back to an uncorrelated MIMO transmission or a partially correlated MIMO transmission.

In some embodiments, the terminal device may fall back to an uncorrelated MIMO transmission or a partially correlated MIMO transmission if the correlation between the multiple transmit paths is below 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 an uncorrelated MIMO transmission or a partially correlated MIMO transmission.

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

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

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

s308, the network device sends the uncorrelated MIMO transmission configuration or the partially correlated MIMO transmission configuration to the terminal device.

Alternatively, the network device may send an uncorrelated MIMO transmission configuration or a partially correlated MIMO transmission configuration to the terminal device based on the S307. Or may be autonomously transmitted by the network device. For example, the network device indicates to the terminal device an uncorrelated MIMO transmission configuration or a partially correlated MIMO transmission configuration for instructing the terminal device to fall back to the uncorrelated MIMO transmission or the partially correlated MIMO transmission if the throughput of the correlated MIMO transmission is below a certain threshold.

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

In some scenarios, in order to enable full correlation MIMO transmission to be adopted in at least some scenarios, or in order to maintain full correlation among multiple transmit paths, the terminal device may employ the MIMO self-calibration procedure according to the embodiment of the present application to promote correlation among multiple transmit paths. The MIMO self-calibration process refers to the related description above, and will not be described herein.

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 with multiple transmit paths, or with related MIMO transmission requirements.

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

s312, the terminal equipment sends a calibration window request to the network equipment, wherein the calibration window request is used for requesting the network equipment to configure the first calibration window.

Optionally, in some embodiments, the first calibration window is a non-periodic time window. For example, the length of the first calibration window may be fixed or configured by the network device, e.g. the terminal device requests the network device to configure the length of the first calibration window at the same time as requesting the configuration of the first calibration window.

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

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

Optionally, in S313, the network device may further configure the terminal device with a transmit power limit of the calibration signal, i.e. the maximum transmit power of the calibration signal sent in the first calibration window.

Further, S314, the terminal device performs correlation calibration between the plurality of 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 a full correlation MIMO transmission.

Alternatively, the configuration of the fully-correlated MIMO transmission according to which the terminal device performs the fully-correlated MIMO transmission may be configured by the network device after the initial reporting.

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

S315, the terminal device indicates to the network device to fall back to an uncorrelated MIMO transmission or a partially correlated MIMO transmission.

In some embodiments, the method 300 may include:

s316, the network device sends the irrelevant MIMO transmission configuration or the partial relevant MIMO transmission configuration to the terminal device.

Alternatively, the network device may send an uncorrelated MIMO transmission configuration or a partially correlated MIMO transmission configuration to the terminal device based on the first indication information in S316. Alternatively, the network device may autonomously decide. For example, the network device indicates to the terminal device an uncorrelated MIMO transmission configuration or a partially correlated MIMO transmission configuration for instructing the terminal device to fall back to the uncorrelated MIMO transmission or the partially correlated MIMO transmission if the throughput of the correlated MIMO transmission is below a certain threshold, in which case the uncorrelated MIMO transmission configuration or the partially correlated MIMO transmission configuration corresponds to the second indication information in the foregoing.

In summary, the terminal device calibrates the correlation of the multiple transmitting paths of the terminal device based on the calibration window, which improves the correlation among the multiple transmitting paths, and further can perform related MIMO transmission based on the multiple transmitting paths with correlation, thereby being beneficial to improving the uplink transmission performance of the terminal device.

The method embodiments of the present application are described in detail above with reference to fig. 3 to 8, and the apparatus embodiments of the present application are described in detail below with reference to fig. 9 to 13, it being understood that the apparatus embodiments and the method embodiments correspond to each other, and similar descriptions may refer to the method embodiments.

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

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

and a communication unit 420, configured to perform data transmission based on the correlation of the calibrated multiple transmission paths.

In some embodiments of the present application, the communication unit 420 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.

and sending the calibration window request to the network device when a first timer is not working, wherein the terminal device is forbidden to initiate the calibration window request or stop the ongoing correlation calibration during the operation of the first timer.

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

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.

In some embodiments of the present application, 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.

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

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

In some embodiments of the present application, the calibration window request is further configured to request 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.

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

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

The period of the first calibration window is predefined or, alternatively, 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 a length and/or period of the first calibration window, where the length and/or period of the first calibration window is configured based on the calibration window request.

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.

and receiving a window deactivation message sent by the network equipment, wherein the window deactivation message is used for deactivating 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 complete message of the terminal device, where the calibration complete message is used to instruct the terminal device to complete correlation calibration between multiple transmission paths of the terminal device.

and after the first calibration window, receiving the related MIMO transmission configuration sent by the network equipment.

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.

And according to the related MIMO transmission configuration, carrying out data transmission based on the calibrated correlation of the plurality of transmitting channels.

In some embodiments of the present application, the communication unit 420 is further configured to: transmitting a related MIMO transmission request to the network device, the related MIMO transmission request being used to request the related MIMO transmission configuration to 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.

and under the condition that the correlation among the plurality of transmitting paths is lower than a preset condition, sending first indication information to the network equipment, wherein the first indication information is used for indicating the terminal equipment to fall back to data transmission based on the partial correlated MIMO transmission configuration or the uncorrelated MIMO transmission configuration.

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.

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 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.

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.

In some embodiments of the application, the first calibration window is configured by the network device to the terminal device in case the terminal device is provided with the capability to perform correlation calibration between a plurality of transmit paths of the terminal device based on the calibration window.

Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or an input/output interface of a communication chip or a system on a chip. The 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 embodiment of the method of the present application, and the above and other operations and/or functions of each unit in the terminal device 400 are respectively for implementing the corresponding procedures of the terminal device in the embodiment of the method shown in fig. 3 to 8, and are not repeated herein for brevity.

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:

a communication unit 510, 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 for calibrating correlation between multiple transmission paths of the terminal device by the terminal device; and

and configuring a first calibration window for the terminal equipment.

In some embodiments of the present application, the communication unit 510 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.

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.

and sending a window deactivation message to the terminal equipment, wherein the window deactivation message is used for deactivating the periodic time window.

and after the first calibration window, sending the related MIMO transmission configuration to the terminal equipment.

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 partial correlated MIMO transmission configuration or a full 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.

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.

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.

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.

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.

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.

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 embodiment of the method of the present application, and the foregoing and other operations and/or functions of each unit in the network device 500 are respectively for implementing the corresponding flows of the network device in the embodiment of the method shown in fig. 3 to 8, and are not repeated herein for brevity.

Fig. 11 is a schematic block diagram of a communication device 600 according to an embodiment of the present application. The communication device 600 shown in fig. 11 comprises a processor 610, from which the processor 610 may call and run a computer program to implement the method in an embodiment of the application.

Optionally, as shown in fig. 11, the communication device 600 may further comprise a memory 620. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the method in an embodiment of the application.

The memory 620 may be a separate device from the processor 610 or may be integrated into 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, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

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

Optionally, the communication device 600 may be specifically a network device according to the embodiment of the present application, and the communication device 600 may implement a corresponding flow implemented by the network device in each method according to the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 600 may be specifically a mobile terminal/terminal device according to an embodiment of the present application, and the communication device 600 may implement corresponding processes implemented by the mobile terminal/terminal device in each method according to the embodiment of the present application, which are not described herein for brevity.

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

Optionally, as shown in fig. 12, chip 700 may also include memory 720. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the method in an embodiment of the application.

Wherein the memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

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

Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the chip may be applied to the network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the chip may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

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.

The terminal device 910 may be configured to implement the corresponding functions implemented by the terminal device in the above method, and the network device 920 may be configured to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The 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 programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. 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 embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is illustrative but not restrictive, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

The embodiment of the application also provides a computer readable storage medium for storing a computer program.

Optionally, the computer readable storage medium may be applied to a network device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which is not described herein for brevity.

The embodiment of the application also provides a computer program product comprising computer program instructions.

Optionally, the computer program product may be applied to a network device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the network device in each method in the embodiment of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiment of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program. Optionally, the computer program may be applied to a network device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiment of the present application, and when the computer program runs on a computer, the computer is caused to execute corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

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.
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.
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.
A method according to claim 3, wherein the first timer is configured by the network device.
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.
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.
The method of any of claims 2-6, wherein the first calibration window is a non-periodic time window.
The method of claim 7, wherein a length of the first calibration window is predefined or configured by a network device.
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.
The method of any of claims 2-6, wherein the first calibration window is a periodic time window.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
The method of claim 25 or 26, wherein the first calibration window is a non-periodic time window.
The method of claim 27, wherein a length of the first calibration window is predefined or configured by a network device.
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.
The method of claim 25 or 26, wherein the first calibration window is a periodic time window.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
The terminal device of claim 45, wherein the first timer is configured by the network device.
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.
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.
The terminal device of any of claims 44-48, wherein the first calibration window is an aperiodic time window.
The terminal device of claim 49, wherein the length of the first calibration window is predefined or configured by a network device.
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.
The terminal device of any of claims 44-48, wherein the first calibration window is a periodic time window.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
The network device of claim 67 or 68, wherein the first calibration window is an aperiodic time window.
The network device of claim 69, wherein the length of the first calibration window is predefined or configured by the network device.
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.
The network device of claim 67 or 68, wherein the first calibration window is a periodic time window.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 24.
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.
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.
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.
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.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 25 to 42.
A computer program, characterized in that the computer program causes a computer to perform the method of any one of claims 25 to 42.