Uplink switching method, terminal, network device, communication system and medium

Abstract

The invention relates to an uplink switching method, a terminal, network equipment, a communication system and a medium. The uplink switching method comprises the following steps: the terminal determines uplink transmission to be carried out; determining a condition corresponding to uplink switching, the condition corresponding to the uplink switching indicating that the terminal needs to perform uplink switching before performing the uplink transmission to be performed, the terminal supporting M uplink antennas and / or the terminal supporting switching among the M uplink antennas, and the M being an integer greater than or equal to 3; and performing uplink switching according to the uplink transmission to be performed. The embodiment of the invention provides an uplink switching method for a terminal with 3Tx and more than 3Tx.

Description

Uplink switching method, terminal, network equipment, communication system and medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to an uplink switching method, a terminal, a network device, a communication system, and a medium. Background Art

[0002] In related technologies, a terminal supporting two transmission links (2Tx UE) can perform uplink switching (UL Tx switching) across two or more uplink (UL) frequency bands. Currently, RAN4 supports terminals supporting three transmission links (3Tx UE). Therefore, uplink switching for 3Tx UEs needs to be considered.

[0003] Summary of the Invention

[0004] The embodiments of the present disclosure provide an uplink switching method, a terminal, a network device, a communication system, and a medium.

[0005] According to a first aspect of an embodiment of the present disclosure, an uplink switching method is proposed, which is performed by a terminal. The method includes:

[0006] Determine the uplink transmission to be performed;

[0007] determining that a situation corresponding to an uplink handover occurs, where the situation corresponding to the uplink handover indicates that the terminal needs to perform an uplink handover before performing the uplink transmission to be performed, wherein the terminal supports M uplink antennas and / or the terminal supports handover between M uplink antennas, where M is an integer greater than or equal to 3;

[0008] Uplink switching is performed according to the uplink transmission to be performed.

[0009] According to a second aspect of an embodiment of the present disclosure, an uplink switching method is proposed, which is performed by a network device. The method includes:

[0010] Determine the uplink transmission to be performed by the terminal;

[0011] determining that a situation corresponding to an uplink handover occurs at the terminal, where the situation corresponding to the uplink handover indicates that the terminal needs to perform an uplink handover before performing the uplink transmission to be performed, wherein the terminal supports M uplink antennas and / or the terminal supports handover between M uplink antennas, where M is an integer greater than or equal to 3;

[0012] The terminal is not expected to perform uplink transmission on at least one frequency band within the first time.

[0013] According to a third aspect of an embodiment of the present disclosure, a terminal is provided, including:

[0014] a processing module configured to determine an uplink transmission to be performed;

[0015] The processing module is further configured to determine that a situation corresponding to an uplink handover occurs, where the situation corresponding to the uplink handover indicates that the terminal needs to perform an uplink handover before performing the uplink transmission to be performed, wherein the terminal supports M uplink antennas and / or the terminal supports handover between M uplink antennas, where M is an integer greater than or equal to 3;

[0016] The processing module is further configured to perform uplink switching according to the uplink transmission to be performed.

[0017] According to a fourth aspect of an embodiment of the present disclosure, a network device is provided, including:

[0018] a processing module configured to determine an uplink transmission to be performed by the terminal;

[0019] The processing module is further configured to determine a situation corresponding to an uplink handover of the terminal, where the situation corresponding to the uplink handover indicates that the terminal needs to perform an uplink handover before performing the uplink transmission to be performed, wherein the terminal supports M uplink antennas and / or the terminal supports handover between M uplink antennas, where M is an integer greater than or equal to 3;

[0020] The processing module is further configured to not expect the terminal to perform uplink transmission on at least one frequency band within a first time.

[0021] According to a fifth aspect of an embodiment of the present disclosure, a terminal is proposed, comprising: one or more processors; wherein the terminal is used to execute the uplink switching method proposed in the first aspect of the embodiment of the present disclosure.

[0022] According to a sixth aspect of an embodiment of the present disclosure, a network device is proposed, comprising: one or more processors; wherein the network device is used to execute the uplink switching method proposed in the second aspect of the embodiment of the present disclosure.

[0023] According to the seventh aspect of an embodiment of the present disclosure, a communication system is proposed, comprising a terminal and a network device, wherein the terminal is configured to implement the uplink switching method proposed in the first aspect of the embodiment of the present disclosure, and the network device is configured to implement the uplink switching method proposed in the second aspect of the embodiment of the present disclosure.

[0024] According to the eighth aspect of the embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the uplink switching method proposed in the first aspect of the embodiment of the present disclosure, or executes the uplink switching method proposed in the second aspect of the embodiment of the present disclosure.

[0025] The embodiments of the present disclosure provide an uplink switching method for terminals with 3Tx or above. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following drawings required for describing the embodiments are introduced. The following drawings are merely some embodiments of the present disclosure and do not impose specific limitations on the protection scope of the present disclosure.

[0027] FIG1 is an exemplary schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.

[0028] FIG2 is an exemplary interaction diagram of an uplink switching method provided according to an embodiment of the present disclosure.

[0029] FIG3A is an exemplary flowchart of an uplink switching method provided according to an embodiment of the present disclosure.

[0030] FIG3B is an exemplary flowchart of an uplink switching method provided according to an embodiment of the present disclosure.

[0031] FIG4A is an exemplary flowchart of an uplink switching method provided according to an embodiment of the present disclosure.

[0032] FIG4B is an exemplary flowchart of an uplink switching method provided according to an embodiment of the present disclosure.

[0033] FIG5A is an exemplary schematic diagram of the structure of a terminal provided according to an embodiment of the present disclosure.

[0034] FIG5B is an exemplary schematic diagram of the structure of a network device provided according to an embodiment of the present disclosure.

[0035] FIG6A is an exemplary schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure.

[0036] FIG6B is an exemplary schematic diagram of the structure of a chip provided according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0037] The embodiments of the present disclosure provide an uplink switching method, a terminal, a network device, a communication system, and a medium.

[0038] In a first aspect, an embodiment of the present disclosure provides an uplink handover method, which is performed by a terminal. The method includes:

[0039] Determine the uplink transmission to be performed;

[0040] determining that a situation corresponding to an uplink handover occurs, where the situation corresponding to the uplink handover indicates that the terminal needs to perform an uplink handover before performing the uplink transmission to be performed, wherein the terminal supports M uplink antennas and / or the terminal supports handover between M uplink antennas, where M is an integer greater than or equal to 3;

[0041] Uplink switching is performed according to the uplink transmission to be performed.

[0042] In the above embodiment, an uplink switching method for terminals with 3Tx or above is proposed.

[0043] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0044] Sending first capability information of the terminal for uplink switching in a frequency band combination, where the first capability information is used to indicate that the terminal supports M uplink antennas and / or the terminal supports switching between M uplink antennas, and the frequency band combination includes at least two frequency bands.

[0045] In the above embodiment, the terminal reports the first capability information to the network device, so that the network device can learn that the terminal supports M uplink antennas and / or switching between M uplink antennas, so that the network device can schedule the uplink transmission to be performed for the terminal, and can know what rules need to be followed to understand the uplink switching behavior of the terminal.

[0046] In conjunction with some embodiments of the first aspect, in some embodiments, performing uplink switching according to the uplink transmission to be performed includes:

[0047] Performing uplink switching within the first time according to the uplink transmission to be performed;

[0048] The method further comprises:

[0049] Uplink transmission is not expected on at least one frequency band in the frequency band combination within the first time.

[0050] In the above embodiment, the first time is the antenna switching time, the terminal performs uplink switching within the first time and does not expect to perform uplink transmission on at least one frequency band within the first time.

[0051] In combination with some embodiments of the first aspect, in some embodiments, the uplink switching includes switching the M uplink antennas between two frequency bands.

[0052] In the above embodiment, uplink switching of a terminal with 3Tx or above includes switching between two frequency bands.

[0053] In conjunction with some embodiments of the first aspect, in some embodiments, the situation corresponding to the uplink switching includes at least one of the following situations:

[0054] The terminal is about to perform 2-port (P) transmission on an uplink carrier of one frequency band, having previously performed 1P transmission on an uplink carrier of the frequency band and 2P transmission on an uplink carrier of another frequency band;

[0055] The terminal is about to perform 1P transmission on an uplink carrier of one frequency band and 2P transmission on an uplink carrier of another frequency band, having previously performed 2P transmission on the uplink carrier of the frequency band;

[0056] The terminal is about to perform 2P transmission on an uplink carrier of a frequency band, having previously performed 2P transmission on an uplink carrier of the frequency band and 1P transmission on an uplink carrier of another frequency band;

[0057] The terminal is about to perform 2P transmission on an uplink carrier of one frequency band and 1P transmission on an uplink carrier of another frequency band, having previously performed 2P transmission on the uplink carrier of the frequency band;

[0058] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, whereas previously the terminal performed 1P transmission on an uplink carrier of the first frequency band and 2P transmission on the second frequency band;

[0059] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, whereas previously the terminal performed 2P transmission on an uplink carrier of the first frequency band and 1P transmission on an uplink carrier of the second frequency band;

[0060] The terminal is about to perform 1P transmission on an uplink carrier of one frequency band, having previously performed 3P transmission on an uplink carrier of another frequency band;

[0061] The terminal is about to perform 3P transmission on an uplink carrier of one frequency band, having previously performed 1P transmission on an uplink carrier of another frequency band;

[0062] The terminal is about to perform 2P transmission on an uplink carrier of one frequency band, having previously performed 3P transmission on an uplink carrier of another frequency band;

[0063] The terminal is about to perform 3P transmission on an uplink carrier of one frequency band, having previously performed 2P transmission on an uplink carrier of another frequency band;

[0064] The terminal is about to perform 1P transmission on an uplink carrier of one frequency band and 1P transmission on an uplink carrier of another frequency band, having previously performed 3P transmission on the uplink carrier of the frequency band;

[0065] The terminal is about to perform 3P transmission on an uplink carrier of a frequency band, having previously performed 1P transmission on an uplink carrier of the frequency band and 1P transmission on an uplink carrier of another frequency band;

[0066] The terminal is about to perform 1P transmission on an uplink carrier of one frequency band and 2P transmission on an uplink carrier of another frequency band, having previously performed 3P transmission on the uplink carrier of the frequency band;

[0067] The terminal is about to perform 3P transmission on an uplink carrier of a frequency band, having previously performed 1P transmission on an uplink carrier of the frequency band and 2P transmission on an uplink carrier of another frequency band;

[0068] The terminal is about to perform 2P transmission on an uplink carrier of one frequency band and 1P transmission on an uplink carrier of another frequency band, having previously performed 3P transmission on the uplink carrier of the frequency band;

[0069] The terminal is about to perform 3P transmission on an uplink carrier of a frequency band, having previously performed 2P transmission on an uplink carrier of the frequency band and 1P transmission on an uplink carrier of another frequency band.

[0070] In the above embodiment, a situation corresponding to uplink switching that may occur when a terminal with 3Tx or above supports switching between two frequency bands is proposed.

[0071] In combination with some embodiments of the first aspect, in some embodiments, the uplink switching includes switching the M uplink antennas between three frequency bands.

[0072] In the above embodiment, uplink switching of a terminal with 3Tx or above includes switching between three frequency bands.

[0073] In conjunction with some embodiments of the first aspect, in some embodiments, the situation corresponding to the uplink switching includes at least one of the following situations:

[0074] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, whereas previously it performed 1P transmission on an uplink carrier of the first frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0075] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 2P transmission on an uplink carrier of the second frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0076] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of the second frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0077] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, whereas previously the terminal performed 2P transmission on an uplink carrier of the first frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0078] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, whereas previously the terminal performed 2P transmission on an uplink carrier of the first frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0079] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of the second frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0080] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, whereas previously it performed 2P transmission on an uplink carrier of the second frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0081] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, whereas previously the terminal performed 1P transmission on an uplink carrier of the first frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0082] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of a third frequency band, respectively;

[0083] The terminal is to perform 1P transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, having previously performed 2P transmission on an uplink carrier of the first frequency band and 1P transmission on an uplink carrier of the second frequency band;

[0084] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of a third frequency band, respectively;

[0085] The terminal is to perform 1P transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, having previously performed 1P transmission on an uplink carrier of the first frequency band and 2P transmission on an uplink carrier of the second frequency band;

[0086] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band, having previously performed 2P transmission on an uplink carrier of a second frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0087] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of a third frequency band;

[0088] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band, having previously performed 1P transmission on an uplink carrier of a second frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0089] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of a third frequency band;

[0090] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band, having previously performed 2P transmission on an uplink carrier of a second frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0091] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 2P transmission on an uplink carrier of a third frequency band;

[0092] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band, having previously performed 1P transmission on an uplink carrier of a second frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0093] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 2P transmission on an uplink carrier of a third frequency band;

[0094] The terminal is about to perform 3P transmission on an uplink carrier of a first frequency band, having previously performed 2P transmission on an uplink carrier of a second frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0095] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 3P transmission on an uplink carrier of a third frequency band;

[0096] The terminal is about to perform 3P transmission on an uplink carrier of a first frequency band, having previously performed 1P transmission on an uplink carrier of a second frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0097] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 3P transmission on an uplink carrier of a third frequency band;

[0098] The terminal is to perform 1P transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, having previously performed 3P transmission on an uplink carrier of the first frequency band;

[0099] The terminal is about to perform 3P transmission on the uplink carrier of the first frequency band, and previously performed 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively.

[0100] In the above embodiment, a situation corresponding to uplink switching that may occur when a terminal with 3Tx or above supports switching between three frequency bands is proposed.

[0101] In combination with some embodiments of the first aspect, in some embodiments, the uplink switching includes switching the M uplink antennas between four frequency bands.

[0102] In the above embodiment, uplink switching of terminals with 3Tx or above includes switching between four frequency bands.

[0103] In conjunction with some embodiments of the first aspect, in some embodiments, the situation corresponding to the uplink switching includes at least one of the following situations:

[0104] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 2P transmission on an uplink carrier of a third frequency band and 1P transmission on an uplink carrier of a fourth frequency band;

[0105] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of a third frequency band and 2P transmission on an uplink carrier of a fourth frequency band;

[0106] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 2P transmission on an uplink carrier of a third frequency band and 1P transmission on an uplink carrier of a fourth frequency band;

[0107] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of a third frequency band and 2P transmission on an uplink carrier of a fourth frequency band;

[0108] The terminal is about to perform 1P transmission on an uplink carrier of the first frequency band, having previously performed 1P transmission on an uplink carrier of the second frequency band, an uplink carrier of the third frequency band, and an uplink carrier of the fourth frequency band, respectively;

[0109] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 1P transmission on an uplink carrier of the fourth frequency band;

[0110] The terminal is about to perform 2P transmission on the uplink carrier of the first frequency band, having previously performed 1P transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band, respectively;

[0111] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 2P transmission on an uplink carrier of the fourth frequency band;

[0112] The terminal is about to perform 3P transmission on the uplink carrier of the first frequency band, having previously performed 1P transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band, respectively;

[0113] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 3P transmission on an uplink carrier of the fourth frequency band;

[0114] The terminal is to perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively. Previously, 1P transmission was performed on the uplink carrier of the first frequency band and the uplink carrier of the fourth frequency band, respectively.

[0115] The terminal is to perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively. Previously, 1P transmission was performed on the uplink carrier of the second frequency band and the uplink carrier of the fourth frequency band, respectively.

[0116] The terminal is to perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively. Previously, 1P transmission was performed on the uplink carrier of the third frequency band and the uplink carrier of the fourth frequency band, respectively.

[0117] The terminal is to perform 1P transmission on an uplink carrier of a first frequency band and an uplink carrier of a second frequency band, respectively, having previously performed 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of a third frequency band, and an uplink carrier of a fourth frequency band, respectively;

[0118] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 1P transmission on an uplink carrier of the first frequency band and 2P transmission on an uplink carrier of the fourth frequency band;

[0119] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 1P transmission on an uplink carrier of the second frequency band and 2P transmission on an uplink carrier of the fourth frequency band;

[0120] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively. Previously, the terminal performed 1P transmission on an uplink carrier of the third frequency band and 2P transmission on an uplink carrier of the fourth frequency band.

[0121] The terminal is about to perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band, having previously performed 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively;

[0122] The terminal is about to perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band, having previously performed 1P transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band, respectively;

[0123] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 2P transmission on an uplink carrier of the first frequency band and 1P transmission on an uplink carrier of the fourth frequency band;

[0124] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 2P transmission on an uplink carrier of the second frequency band and 1P transmission on an uplink carrier of the fourth frequency band;

[0125] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 2P transmission on an uplink carrier of the third frequency band and 1P transmission on an uplink carrier of the fourth frequency band;

[0126] The terminal is about to perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band, having previously performed 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively;

[0127] The terminal will perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band, after previously performing 1P transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band and the uplink carrier of the fourth frequency band respectively.

[0128] In the above embodiment, a situation corresponding to uplink switching that may occur when a terminal with 3Tx or above supports switching between four frequency bands is proposed.

[0129] In a second aspect, an embodiment of the present disclosure provides an uplink switching method, which is performed by a network device. The method includes:

[0130] Determine the uplink transmission to be performed by the terminal;

[0131] determining that a situation corresponding to an uplink handover occurs at the terminal, where the situation corresponding to the uplink handover indicates that the terminal needs to perform an uplink handover before performing the uplink transmission to be performed, wherein the terminal supports M uplink antennas and / or the terminal supports handover between M uplink antennas, where M is an integer greater than or equal to 3;

[0132] The terminal is not expected to perform uplink transmission on at least one frequency band within the first time.

[0133] In the above embodiment, an uplink switching method for terminals with 3Tx or above is proposed.

[0134] In conjunction with some embodiments of the second aspect, in some embodiments, the method further includes:

[0135] First capability information of the terminal for uplink switching in a frequency band combination is received, where the first capability information is used to indicate that the terminal supports M uplink antennas and / or the terminal supports switching between M uplink antennas, and the frequency band combination includes at least two frequency bands.

[0136] In combination with some embodiments of the second aspect, in some embodiments, the uplink switching includes switching the M uplink antennas between two frequency bands.

[0137] In conjunction with some embodiments of the second aspect, in some embodiments, the situation corresponding to the uplink switching includes at least one of the following situations:

[0138] The terminal is about to perform 2P transmission on an uplink carrier of one frequency band, having previously performed 1P transmission on an uplink carrier of the frequency band and 2P transmission on an uplink carrier of another frequency band;

[0139] The terminal is about to perform 1P transmission on an uplink carrier of one frequency band and 2P transmission on an uplink carrier of another frequency band, having previously performed 2P transmission on the uplink carrier of the frequency band;

[0140] The terminal is about to perform 2P transmission on an uplink carrier of a frequency band, having previously performed 2P transmission on an uplink carrier of the frequency band and 1P transmission on an uplink carrier of another frequency band;

[0141] The terminal is about to perform 2P transmission on an uplink carrier of one frequency band and 1P transmission on an uplink carrier of another frequency band, having previously performed 2P transmission on the uplink carrier of the frequency band;

[0142] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, whereas previously the terminal performed 1P transmission on an uplink carrier of the first frequency band and 2P transmission on the second frequency band;

[0143] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, whereas previously the terminal performed 2P transmission on an uplink carrier of the first frequency band and 1P transmission on an uplink carrier of the second frequency band;

[0144] The terminal is about to perform 1P transmission on an uplink carrier of one frequency band, having previously performed 3P transmission on an uplink carrier of another frequency band;

[0145] The terminal is about to perform 3P transmission on an uplink carrier of one frequency band, having previously performed 1P transmission on an uplink carrier of another frequency band;

[0146] The terminal is about to perform 2P transmission on an uplink carrier of one frequency band, having previously performed 3P transmission on an uplink carrier of another frequency band;

[0147] The terminal is about to perform 3P transmission on an uplink carrier of one frequency band, having previously performed 2P transmission on an uplink carrier of another frequency band;

[0148] The terminal is about to perform 1P transmission on an uplink carrier of one frequency band and 1P transmission on an uplink carrier of another frequency band, having previously performed 3P transmission on the uplink carrier of the frequency band;

[0149] The terminal is about to perform 3P transmission on an uplink carrier of a frequency band, having previously performed 1P transmission on an uplink carrier of the frequency band and 1P transmission on an uplink carrier of another frequency band;

[0150] The terminal is about to perform 1P transmission on an uplink carrier of one frequency band and 2P transmission on an uplink carrier of another frequency band, having previously performed 3P transmission on the uplink carrier of the frequency band;

[0151] The terminal is about to perform 3P transmission on an uplink carrier of a frequency band, having previously performed 1P transmission on an uplink carrier of the frequency band and 2P transmission on an uplink carrier of another frequency band;

[0152] The terminal is about to perform 2P transmission on an uplink carrier of one frequency band and 1P transmission on an uplink carrier of another frequency band, having previously performed 3P transmission on the uplink carrier of the frequency band;

[0153] The terminal is about to perform 3P transmission on an uplink carrier of a frequency band, having previously performed 2P transmission on an uplink carrier of the frequency band and 1P transmission on an uplink carrier of another frequency band.

[0154] In combination with some embodiments of the second aspect, in some embodiments, the uplink switching includes switching the M uplink antennas between three frequency bands.

[0155] In conjunction with some embodiments of the second aspect, in some embodiments, the situation corresponding to the uplink switching includes at least one of the following situations:

[0156] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, whereas previously it performed 1P transmission on an uplink carrier of the first frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0157] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 2P transmission on an uplink carrier of the second frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0158] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of the second frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0159] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, whereas previously the terminal performed 2P transmission on an uplink carrier of the first frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0160] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, whereas previously the terminal performed 2P transmission on an uplink carrier of the first frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0161] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of the second frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0162] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, whereas previously it performed 2P transmission on an uplink carrier of the second frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0163] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, whereas previously the terminal performed 1P transmission on an uplink carrier of the first frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0164] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of a third frequency band, respectively;

[0165] The terminal is to perform 1P transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, having previously performed 2P transmission on an uplink carrier of the first frequency band and 1P transmission on an uplink carrier of the second frequency band;

[0166] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of a third frequency band, respectively;

[0167] The terminal is to perform 1P transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, having previously performed 1P transmission on an uplink carrier of the first frequency band and 2P transmission on an uplink carrier of the second frequency band;

[0168] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band, having previously performed 2P transmission on an uplink carrier of a second frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0169] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of a third frequency band;

[0170] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band, having previously performed 1P transmission on an uplink carrier of a second frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0171] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of a third frequency band;

[0172] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band, having previously performed 2P transmission on an uplink carrier of a second frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0173] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 2P transmission on an uplink carrier of a third frequency band;

[0174] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band, having previously performed 1P transmission on an uplink carrier of a second frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0175] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 2P transmission on an uplink carrier of a third frequency band;

[0176] The terminal is about to perform 3P transmission on an uplink carrier of a first frequency band, having previously performed 2P transmission on an uplink carrier of a second frequency band and 1P transmission on an uplink carrier of a third frequency band;

[0177] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 3P transmission on an uplink carrier of a third frequency band;

[0178] The terminal is about to perform 3P transmission on an uplink carrier of a first frequency band, having previously performed 1P transmission on an uplink carrier of a second frequency band and 2P transmission on an uplink carrier of a third frequency band;

[0179] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 3P transmission on an uplink carrier of a third frequency band;

[0180] The terminal is to perform 1P transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, having previously performed 3P transmission on an uplink carrier of the first frequency band;

[0181] The terminal is about to perform 3P transmission on the uplink carrier of the first frequency band, and previously performed 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively.

[0182] In combination with some embodiments of the second aspect, in some embodiments, the uplink switching includes switching the M uplink antennas between four frequency bands.

[0183] In conjunction with some embodiments of the second aspect, in some embodiments, the situation corresponding to the uplink switching includes at least one of the following situations:

[0184] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 2P transmission on an uplink carrier of a third frequency band and 1P transmission on an uplink carrier of a fourth frequency band;

[0185] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of a third frequency band and 2P transmission on an uplink carrier of a fourth frequency band;

[0186] The terminal is about to perform 1P transmission on an uplink carrier of a first frequency band and 2P transmission on an uplink carrier of a second frequency band, having previously performed 2P transmission on an uplink carrier of a third frequency band and 1P transmission on an uplink carrier of a fourth frequency band;

[0187] The terminal is about to perform 2P transmission on an uplink carrier of a first frequency band and 1P transmission on an uplink carrier of a second frequency band, having previously performed 1P transmission on an uplink carrier of a third frequency band and 2P transmission on an uplink carrier of a fourth frequency band;

[0188] The terminal is about to perform 1P transmission on an uplink carrier of the first frequency band, having previously performed 1P transmission on an uplink carrier of the second frequency band, an uplink carrier of the third frequency band, and an uplink carrier of the fourth frequency band, respectively;

[0189] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 1P transmission on an uplink carrier of the fourth frequency band;

[0190] The terminal is about to perform 2P transmission on the uplink carrier of the first frequency band, having previously performed 1P transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band, respectively;

[0191] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 2P transmission on an uplink carrier of the fourth frequency band;

[0192] The terminal is about to perform 3P transmission on the uplink carrier of the first frequency band, having previously performed 1P transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band, respectively;

[0193] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 3P transmission on an uplink carrier of the fourth frequency band;

[0194] The terminal is to perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively. Previously, 1P transmission was performed on the uplink carrier of the first frequency band and the uplink carrier of the fourth frequency band, respectively.

[0195] The terminal is to perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively. Previously, 1P transmission was performed on the uplink carrier of the second frequency band and the uplink carrier of the fourth frequency band, respectively.

[0196] The terminal is to perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively. Previously, 1P transmission was performed on the uplink carrier of the third frequency band and the uplink carrier of the fourth frequency band, respectively.

[0197] The terminal is to perform 1P transmission on an uplink carrier of a first frequency band and an uplink carrier of a second frequency band, respectively, having previously performed 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of a third frequency band, and an uplink carrier of a fourth frequency band, respectively;

[0198] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 1P transmission on an uplink carrier of the first frequency band and 2P transmission on an uplink carrier of the fourth frequency band;

[0199] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 1P transmission on an uplink carrier of the second frequency band and 2P transmission on an uplink carrier of the fourth frequency band;

[0200] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively. Previously, the terminal performed 1P transmission on an uplink carrier of the third frequency band and 2P transmission on an uplink carrier of the fourth frequency band.

[0201] The terminal is about to perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band, having previously performed 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively;

[0202] The terminal is about to perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band, having previously performed 1P transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band, respectively;

[0203] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 2P transmission on an uplink carrier of the first frequency band and 1P transmission on an uplink carrier of the fourth frequency band;

[0204] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 2P transmission on an uplink carrier of the second frequency band and 1P transmission on an uplink carrier of the fourth frequency band;

[0205] The terminal is to perform 1P transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, having previously performed 2P transmission on an uplink carrier of the third frequency band and 1P transmission on an uplink carrier of the fourth frequency band;

[0206] The terminal is about to perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band, having previously performed 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively;

[0207] The terminal will perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band, after previously performing 1P transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band and the uplink carrier of the fourth frequency band respectively.

[0208] In a third aspect, an embodiment of the present disclosure provides a terminal, including:

[0209] a processing module configured to determine an uplink transmission to be performed;

[0210] The processing module is further configured to determine that a situation corresponding to an uplink handover occurs, where the situation corresponding to the uplink handover indicates that the terminal needs to perform an uplink handover before performing the uplink transmission to be performed, wherein the terminal supports M uplink antennas and / or the terminal supports handover between M uplink antennas, where M is an integer greater than or equal to 3;

[0211] The processing module is further configured to perform uplink switching according to the uplink transmission to be performed.

[0212] In a fourth aspect, an embodiment of the present disclosure provides a network device, including:

[0213] a processing module configured to determine an uplink transmission to be performed by the terminal;

[0214] The processing module is further configured to determine a situation corresponding to an uplink handover of the terminal, where the situation corresponding to the uplink handover indicates that the terminal needs to perform an uplink handover before performing the uplink transmission to be performed, wherein the terminal supports M uplink antennas and / or the terminal supports handover between M uplink antennas, where M is an integer greater than or equal to 3;

[0215] The processing module is further configured to not expect the terminal to perform uplink transmission on at least one frequency band within a first time.

[0216] In a fifth aspect, an embodiment of the present disclosure proposes a terminal, comprising: one or more processors; wherein the terminal is used to execute the uplink switching method provided by the first aspect of the embodiment of the present disclosure or the optional implementation of the first aspect.

[0217] In a sixth aspect, an embodiment of the present disclosure proposes a network device, comprising: one or more processors; wherein the network device is used to execute the uplink switching method provided by the second aspect of the embodiment of the present disclosure or the optional implementation of the second aspect.

[0218] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, including a terminal and a network device, wherein the terminal is configured to implement the uplink switching method provided by the first aspect of the embodiment of the present disclosure or the optional implementation of the first aspect, and the network device is configured to implement the uplink switching method provided by the second aspect of the embodiment of the present disclosure or the optional implementation of the second aspect.

[0219] In an eighth aspect, an embodiment of the present disclosure proposes a storage medium storing instructions. When the instructions are executed on a communication device, the communication device executes an uplink switching method as provided in the first aspect of the embodiment of the present disclosure or an optional implementation of the first aspect, or executes an uplink switching method as provided in the second aspect of the embodiment of the present disclosure or an optional implementation of the second aspect.

[0220] In the ninth aspect, an embodiment of the present disclosure proposes a program product. When the above-mentioned program product is executed by a communication device, the above-mentioned communication device executes the uplink switching method provided by the first aspect of the embodiment of the present disclosure or the optional implementation of the first aspect, or executes the uplink switching method provided by the second aspect of the embodiment of the present disclosure or the optional implementation of the second aspect.

[0221] In the tenth aspect, an embodiment of the present disclosure proposes a computer program, which, when running on a computer, enables the computer to execute the uplink switching method provided by the first aspect of the embodiment of the present disclosure or the optional implementation of the first aspect, or to execute the uplink switching method provided by the second aspect of the embodiment of the present disclosure or the optional implementation of the second aspect.

[0222] In an eleventh aspect, an embodiment of the present disclosure provides a chip or a chip system. The chip or chip system includes a processing circuit configured to execute the uplink switching method provided according to the first aspect of the embodiment of the present disclosure or an optional implementation of the first aspect, or to execute the uplink switching method provided according to the second aspect of the embodiment of the present disclosure or an optional implementation of the second aspect.

[0223] It is understandable that the above-mentioned terminals, network devices, communication systems, storage media, program products, computer programs, chips, or chip systems are all used to perform the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects of the corresponding methods and will not be repeated here.

[0224] The embodiments of the present disclosure provide an uplink switching method, a terminal, a network device, a communication system, and a medium. In some embodiments, the terms uplink switching method, uplink transmission method, communication method, etc. can be used interchangeably.

[0225] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0226] In each embodiment of the present disclosure, unless otherwise specified or provided for by logic, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0227] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0228] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", "the", etc., may mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article may be understood as a singular expression or a plural expression.

[0229] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0230] In some embodiments, the terms "at least one," "one or more," "a plurality of," "multiple," etc. may be used interchangeably.

[0231] In some embodiments, descriptions such as "at least one of A and B," "A and / or B," "A in one case, B in another case," or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); and in some embodiments, A and B (both A and B are executed). The above is also applicable when there are more branches such as A, B, and C.

[0232] In some embodiments, "A or B" and other descriptions may include the following technical solutions depending on the situation: in some embodiments, A (A is executed independently of B); in some embodiments, B (B is executed independently of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The above is also applicable when there are more branches such as A, B, C, etc.

[0233] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restriction on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restriction should be constituted due to the use of prefixes. For example, if the description object is a "field", the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields". "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field". For another example, if the description object is a "level", the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels". For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device", then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different. For another example, if the description object is "information", then the "first information" and the "second information" can be the same information or different information, and their contents can be the same or different.

[0234] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0235] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0236] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0237] In some embodiments, devices and equipment can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they can also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "subject", etc.

[0238] In some embodiments, "network" can be interpreted as devices included in the network, such as access network equipment, core network equipment, etc.

[0239] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)", "base station (BS)", "radio base station", "fixed station", and in some embodiments may also be understood as "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission and / or reception point (TRP)" "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "serving cell", "carrier", "component carrier", "bandwidth part (BWP)", etc.

[0240] In some embodiments, "terminal" or "terminal device" may be referred to as "user equipment (UE)", "user terminal" "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc.

[0241] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0242] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0243] In addition, each element, each row, or each column in the table of the embodiment of the present disclosure can be implemented as an independent embodiment, and the combination of any elements, any rows, and any columns can also be implemented as an independent embodiment.

[0244] FIG1 is a schematic diagram illustrating the architecture of a communication system according to an embodiment of the present disclosure. As shown in FIG1 , a communication system 100 includes a terminal 101 and a network device 102 .

[0245] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0246] In some embodiments, the network device 102 may include an access network device. The access network device is, for example, a node or device that connects a terminal to a wireless network. The access network device may include at least one of an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a NodeB (NB), a home nodeB (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open RAN, a cloud RAN, a base station in other communication systems, and an access node in a Wi-Fi system, but is not limited thereto.

[0247] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0248] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0249] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0250] The following embodiments of the present disclosure may be applied to the communication system 100 shown in FIG1 , or a portion thereof, but are not limited thereto. The entities shown in FIG1 are illustrative only. The communication system may include all or part of the entities shown in FIG1 , or may include other entities outside of FIG1 . The number and form of the entities are arbitrary, and the entities may be physical or virtual. The connection relationships between the entities are illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0251] The embodiments of the present disclosure can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), future radio access (FRA), new radio access technology (RAT), new radio (NR), new radio access (NX), future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X), systems utilizing other communication methods, and next-generation systems based on and extending these methods. Furthermore, multiple systems may be combined (for example, a combination of LTE or LTE-A with 5G).

[0252] Currently, NR supports a large amount of spectrum across various frequency ranges. In the low-frequency FR1 band, the available spectrum is more fragmented and the available bandwidth is generally narrow, making it more suitable for inter-band multi-carrier operations. In the FR2 band and some FR1 bands, the available spectrum can be wider, making it more suitable for intra-band multi-carrier operations. To meet the needs of different application scenarios and ensure the efficient use of both fragmented and wide spectrum, enhancements to uplink multi-carrier are needed.

[0253] The Rel-16 / 17 protocol has some limitations on uplink multi-carriers. For example, a terminal (2Tx UE) supporting two transmission links (2Tx) can be configured with a maximum of two uplink (UL) bands. The 2Tx UE can only perform antenna switching between the two UL bands, and these two UL bands can only be adjusted through Radio Resource Control (RRC) reconfiguration. The terminal dynamically selects carriers through uplink antenna switching, for example, based on data traffic, time division duplexing (TDD) configuration, frequency band bandwidth, and channel conditions, to achieve better uplink data rates, spectrum utilization, and uplink capacity. In the Rel-18 protocol, the 2Tx UE is allowed to be configured with more than two UL bands, such as three or four UL bands, and supports uplink antenna switching between more than two UL bands, also known as uplink switching. Therefore, the next step needs to consider how to perform uplink switching between more than two UL bands. In some embodiments, terms such as uplink switching, uplink antenna switching, and uplink transmission switching can be used interchangeably. In the Rel-18 protocol, for uplink switching between more than two UL frequency bands, new switching cases such as "Band 1 + Band 2 (1T+1T) -> Band 3 + Band 4 (1T+1T)" and "Band 1 + Band 2 (1T+1T) <—> Band 3 (2T)" are introduced. It should be noted that Tx can be used interchangeably with terms such as antenna, transmission link, transmit link, and RF chain.

[0254] Currently, RAN4 supports terminals with three transmission links (3Tx UEs), simultaneously supporting two-port (2P) transmission on one frequency band and one-port (1P) transmission on another. Therefore, the next step is to consider how 3Tx UEs can perform uplink handover between two or more UL frequency bands. In some embodiments, antennas and transmission links (Tx) can be interchanged. For example, "terminal supports three antennas" and "terminal supports three transmission links" can be interchanged.

[0255] Handover scenarios are a core issue for uplink handover. Before discussing new handover scenarios, using a 3Tx UE as an example, it's important to clarify the number of ports supported by the 3Tx UE. Optionally, in this embodiment, the handover scenario can include both 1P and 2P transmission. Optionally, in this embodiment, the handover scenario can also include 3P transmission.

[0256] Optionally, taking a 3Tx UE as an example, it is necessary to clarify the number of frequency bands that the 3Tx UE supports switching. In the embodiment of the present disclosure, the 3Tx UE supports uplink switching between two or more frequency bands.

[0257] It should be noted that the embodiments of the present disclosure are applicable to terminals that support M transmission links (Tx), where M is an integer greater than or equal to 3. For example, the embodiments of the present disclosure are applicable to 3Tx UEs. It should be understood that with the evolution of protocol versions and the emergence of new service scenarios, the embodiments of the present disclosure may also be applicable to 4Tx UEs, 5Tx UEs, and so on.

[0258] It should be understood that if a terminal is associated with a number of uplink antennas on a frequency band (on an uplink carrier on a frequency band), where a is an integer greater than or equal to 0 and less than or equal to M, then the number of ports allowed for uplink transmission by the terminal on that frequency band (carrier) is an integer less than or equal to a. For example, if a terminal is associated with two uplink antennas on a frequency band, then the terminal is allowed to perform 0P uplink transmission, 1P uplink transmission, or 2P uplink transmission on that frequency band. It should be understood that for a number of uplink antennas associated with a frequency band, actual uplink transmission does not necessarily occur; this depends on actual scheduling or configuration.

[0259] In some embodiments, when the number of uplink antennas associated with a terminal on a certain frequency band (carrier) is less than the number of ports scheduled by the network device for uplink transmission of the terminal on the frequency band (carrier), the terminal can switch the uplink antennas on other frequency bands (carriers) to the frequency band (carrier) to support the uplink transmission scheduled by the network device.

[0260] FIG2 is an interactive diagram of an uplink switching method according to an embodiment of the present disclosure. As shown in FIG2 , the uplink switching method includes:

[0261] Step S2101: The terminal sends first capability information to the network device.

[0262] In some embodiments, the terminal sends first capability information to the network device for performing uplink switching on a frequency band combination. Optionally, the frequency band combination includes at least two frequency bands. Optionally, the frequency band combination is configured with uplink carrier aggregation.

[0263] In some embodiments, the terminal supports M uplink antennas and / or supports switching between M uplink antennas. Optionally, M is at least an integer greater than or equal to 2. In some embodiments, M is an integer greater than or equal to 3.

[0264] In some embodiments, the first capability information is used to indicate that the terminal supports M uplink antennas and / or the terminal supports switching between M uplink antennas.

[0265] In some embodiments, the network device receives first capability information, and the network device learns, based on the received first capability information, that the terminal supports M uplink antennas and / or supports switching between M uplink antennas. For example, the network device may learn that the terminal supports three uplink antennas and / or switching between the three uplink antennas.

[0266] In some embodiments, terms such as uplink antenna, transmission link, send link, and radio frequency chain can be used interchangeably. For example, the first capability information is used to indicate that the terminal supports M transmission links and / or supports switching between M transmission links.

[0267] In some embodiments, this step is optional.

[0268] According to an embodiment of the present disclosure, the terminal reports the first capability information to the network device, so that the network device can learn that the terminal supports M uplink antennas and / or switching between M uplink antennas, so that the network device can schedule the uplink transmission to be performed for the terminal, and can know what rules need to be followed to understand the uplink switching behavior of the terminal.

[0269] Step S2102: The network device sends first information to the terminal.

[0270] In some embodiments, the first information is used to schedule the terminal to perform uplink transmission. Optionally, the uplink transmission scheduled by the first information is the uplink transmission that the terminal is about to perform.

[0271] In some embodiments, the uplink transmission to be performed by the terminal includes transmission on at least one frequency band. Optionally, the uplink transmission to be performed by the terminal also includes a certain number of ports required to be transmitted on each of the at least one frequency band. For example, the uplink transmission to be performed by the terminal includes 1P transmission on a first frequency band and 2P transmission on a second frequency band. For another example, the uplink transmission to be performed by the terminal includes 1P transmission on a first frequency band, 1P transmission on a second frequency band, and 1P transmission on a third frequency band.

[0272] In some embodiments, the terminal receives first information from the network device and determines the uplink transmission to be performed based on the first information.

[0273] In some embodiments, this step is optional. In an optional implementation, the terminal may determine the uplink transmission to be performed independently of the scheduling of the network device. For example, the terminal may independently determine the uplink transmission to be performed within the configuration grant (CG) period of the uplink transmission.

[0274] In step S2103, the terminal determines that a situation corresponding to uplink switching occurs.

[0275] In some embodiments, the situation corresponding to the uplink switching indicates that the terminal needs to perform an uplink switching before performing the uplink transmission to be performed.

[0276] In some embodiments, the terminal determines whether a corresponding uplink switching situation occurs based on an upcoming uplink transmission and a previous uplink transmission. Optionally, the upcoming uplink transmission and the previous uplink transmission are two adjacent uplink transmissions. Optionally, the previous uplink transmission can be replaced by the current uplink transmission.

[0277] In some embodiments, the uplink switching supported by the terminal includes switching of M uplink antennas between two or more frequency bands.

[0278] In some embodiments, the uplink switching supported by the terminal includes switching of M uplink antennas between two frequency bands. Optionally, the two frequency bands are included in a frequency band combination.

[0279] In some embodiments, the uplink switching supported by the terminal includes switching of M uplink antennas between three frequency bands. Optionally, the three frequency bands are included in a frequency band combination.

[0280] In some embodiments, the uplink switching supported by the terminal includes switching of M uplink antennas between four frequency bands. Optionally, the four frequency bands are included in a frequency band combination.

[0281] In the embodiments of the present disclosure, exemplary scenarios 1, 2, and 3 are used to illustrate possible uplink switching cases and possible situations corresponding to the uplink switching in each scenario.

[0282] Example Scenario 1: Switching between Two Frequency Bands

[0283] Table 1

[0284] As shown in Table 1, the terminal supports switching between two frequency bands. There may be four switching cases, and each switching case may have multiple different uplink transmission states. The two frequency bands mentioned above are included in the frequency band combination.

[0285] Taking Case #1 as an example, three uplink antennas are associated with frequency band #1, and no uplink antenna is associated with frequency band #2. The possible uplink transmission states include at least one of the following:

[0286] 1P+0P: indicates that the terminal performs 1P transmission on frequency band #1;

[0287] 2P+0P: indicates that the terminal performs 2P transmission on frequency band #1;

[0288] 3P+0P indicates that the terminal performs 3P transmission on frequency band #1.

[0289] Taking Case #4 as an example, one uplink antenna is associated with frequency band #1, and two uplink antennas are associated with frequency band #2. The possible uplink transmission states include at least one of the following:

[0290] 0P+1P means the terminal performs 1P transmission on frequency band #2;

[0291] 0P+2P means the terminal performs 2P transmission on frequency band #2;

[0292] 1P+1P means that the terminal performs 1P transmission on frequency band #1 and 1P transmission on frequency band #2;

[0293] 1P+2P: indicates that the terminal performs 1P transmission on frequency band #1 and 2P transmission on frequency band #2;

[0294] 1P+0P indicates that the terminal performs 1P transmission on frequency band #1.

[0295] According to the switching cases shown in Table 1 and the uplink transmission states in each switching case, the terminal can switch from any uplink transmission state to any other uplink transmission state.

[0296] In some embodiments, as shown in Table 1, situations corresponding to possible uplink switching of the terminal include at least one of the following situations (1) to (16):

[0297] (1) For example: 2P+0P<—1P+2P

[0298] The terminal is about to perform 2P transmission on an uplink carrier of one frequency band, having previously performed 1P transmission on an uplink carrier of the frequency band and 2P transmission on an uplink carrier of another frequency band.

[0299] It should be understood that “the frequency band” refers to the “a frequency band” in the preceding text.

[0300] In some embodiments, "one frequency band" and "another frequency band" mentioned in the same context are only used to distinguish two different frequency bands and do not refer to a specific frequency band.

[0301] In some embodiments, "a frequency band" mentioned in different situations may be the same frequency band or different frequency bands, and "another frequency band" mentioned in different situations may be the same frequency band or different frequency bands.

[0302] (2) For example: 2P+0P—>1P+2P

[0303] The terminal will perform 1P transmission on an uplink carrier of one frequency band and 2P transmission on an uplink carrier of another frequency band, whereas it previously performed 2P transmission on the uplink carrier of the frequency band.

[0304] (3) For example: 2P+0P<—2P+1P

[0305] The terminal is about to perform 2P transmission on an uplink carrier of one frequency band, having previously performed 2P transmission on an uplink carrier of the frequency band and 1P transmission on an uplink carrier of another frequency band.

[0306] (4) For example: 2P+0P—>2P+1P

[0307] The terminal will perform 2P transmission on an uplink carrier of one frequency band and 1P transmission on an uplink carrier of another frequency band, having previously performed 2P transmission on the uplink carrier of the frequency band.

[0308] (5) For example: 2P+1P<—1P+2P

[0309] The terminal will perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band. Previously, the terminal performed 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the second frequency band.

[0310] In some embodiments, the “first frequency band” and “second frequency band” mentioned in the same context are only used to distinguish two different frequency bands and do not refer to a specific frequency band.

[0311] In some embodiments, the “first frequency band” mentioned in different situations may be the same frequency band or different frequency bands, and the “second frequency band” mentioned in different situations may be the same frequency band or different frequency bands.

[0312] (6) For example: 2P+1P—>1P+2P

[0313] The terminal will perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band. Previously, it performed 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band.

[0314] (7) For example: 1P+0P<—0P+3P

[0315] The terminal is about to perform 1P transmission on an uplink carrier of one frequency band, having previously performed 3P transmission on an uplink carrier of another frequency band.

[0316] (8) For example: 1P+0P—>0P+3P

[0317] The terminal will perform 3P transmission on an uplink carrier of one frequency band, whereas it previously performed 1P transmission on an uplink carrier of another frequency band.

[0318] (9) For example: 2P+0P<—0P+3P

[0319] The terminal will perform 2P transmission on an uplink carrier of one frequency band, whereas it previously performed 3P transmission on an uplink carrier of another frequency band.

[0320] (10) For example: 2P+0P—>0P+3P

[0321] The terminal will perform 3P transmission on an uplink carrier of one frequency band, whereas it previously performed 2P transmission on an uplink carrier of another frequency band.

[0322] (11) For example: 1P+1P<—0P+3P

[0323] The terminal will perform 1P transmission on an uplink carrier of one frequency band and 1P transmission on an uplink carrier of another frequency band, having previously performed 3P transmission on the uplink carrier of the frequency band.

[0324] (12) For example: 1P+1P—>0P+3P

[0325] The terminal is about to perform 3P transmission on an uplink carrier of one frequency band, having previously performed 1P transmission on an uplink carrier of the frequency band and 1P transmission on an uplink carrier of another frequency band.

[0326] (13) For example: 2P+1P<—0P+3P

[0327] The terminal will perform 1P transmission on an uplink carrier of one frequency band and 2P transmission on an uplink carrier of another frequency band, whereas previously it performed 3P transmission on the uplink carrier of the frequency band.

[0328] (14) For example: 2P+1P—>0P+3P

[0329] The terminal will perform 3P transmission on an uplink carrier of one frequency band, having previously performed 1P transmission on an uplink carrier of the frequency band and 2P transmission on an uplink carrier of another frequency band.

[0330] (15) For example: 1P+2P<—0P+3P

[0331] The terminal will perform 2P transmission on an uplink carrier of one frequency band and 1P transmission on an uplink carrier of another frequency band, whereas previously it performed 3P transmission on the uplink carrier of the frequency band.

[0332] (16) For example: 1P+2P—>0P+3P

[0333] The terminal will perform 3P transmission on an uplink carrier of one frequency band, having previously performed 2P transmission on an uplink carrier of the same frequency band and 1P transmission on an uplink carrier of another frequency band.

[0334] According to the above embodiments, the embodiments of the present disclosure provide possible switching cases and possible uplink switching corresponding situations when a terminal supports switching between two frequency bands.

[0335] Example Scenario 2: Switching between three frequency bands

[0336] Table 2

[0337] As shown in Table 2, the terminal supports switching between three frequency bands. There are 10 possible switching cases, and each switching case may have multiple different uplink transmission states. The three frequency bands mentioned above are included in the frequency band combination.

[0338] According to the switching cases shown in Table 2 and the uplink transmission states in each switching case, the terminal can switch from any uplink transmission state to any other uplink transmission state.

[0339] In some embodiments, as shown in Table 2, situations corresponding to possible uplink switching of the terminal include at least one of the following situations (1) to (26):

[0340] (1) For example: 2P+1P+0P<—1P+0P+2P; 2P+0P+1P<—1P+2P+0P; 2P+1P+0P—>0P+2P+1P.

[0341] The terminal will perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band. Previously, it performed 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the third frequency band.

[0342] In some embodiments, the “first frequency band,” “second frequency band,” and “third frequency band” mentioned in the same context are only used to distinguish three different frequency bands and do not refer to a specific frequency band.

[0343] In some embodiments, the "first frequency band" mentioned in different situations may be the same frequency band or different frequency bands, the "second frequency band" mentioned in different situations may be the same frequency band or different frequency bands, and the "third frequency band" mentioned in different situations may be the same frequency band or different frequency bands.

[0344] (2) For example: 2P+1P+0P<—0P+2P+1P; 2P+0P+1P<—0P+1P+2P; 1P+0P+2P—>0P+2P+1P.

[0345] The terminal will perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band. Previously, it performed 2P transmission on the uplink carrier of the second frequency band and 1P transmission on the uplink carrier of the third frequency band.

[0346] (3) For example: 2P+1P+0P<—0P+2P+1P; 2P+0P+1P<—0P+1P+2P; 1P+0P+2P—>0P+2P+1P.

[0347] The terminal will perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band. Previously, it performed 1P transmission on the uplink carrier of the second frequency band and 2P transmission on the uplink carrier of the third frequency band.

[0348] (4) For example: 1P+2P+0P—>0P+2P+1P; 2P+1P+0P<—2P+0P+1P; 2P+1P+0P—>2P+0P+1P.

[0349] The terminal will perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band. Previously, it performed 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the third frequency band.

[0350] (5) For example: 2P+1P+0P—>1P+0P+2P; 2P+0P+1P—>1P+2P+0P; 1P+2P+0P—>0P+1P+2P.

[0351] The terminal will perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band. Previously, it performed 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the third frequency band.

[0352] (6) For example: 2P+0P+1P—>0P+1P+2P; 1P+2P+0P<—0P+1P+2P; 1P+0P+2P<—0P+2P+1P.

[0353] The terminal will perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band. Previously, it performed 1P transmission on the uplink carrier of the second frequency band and 2P transmission on the uplink carrier of the third frequency band.

[0354] (7) For example: 1P+2P+0P<—0P+2P+1P; 1P+0P+2P<—0P+1P+2P; 1P+0P+2P—>0P+1P+2P.

[0355] The terminal will perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band. Previously, it performed 2P transmission on the uplink carrier of the second frequency band and 1P transmission on the uplink carrier of the third frequency band.

[0356] (8) For example: 2P+1P+0P—>0P+1P+2P; 1P+2P+0P<—1P+0P+2P; 1P+2P+0P—>1P+0P+2P.

[0357] The terminal will perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band. Previously, it performed 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the third frequency band.

[0358] (9) For example: 2P+1P+0P<—1P+1P+1P; 2P+0P+1P<—1P+1P+1P; 0P+2P+1P<—1P+1P+1P.

[0359] The terminal will perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band. Previously, it performed 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively.

[0360] (10) For example: 2P+1P+0P—>1P+1P+1P; 2P+0P+1P—>1P+1P+1P; 0P+2P+1P—>1P+1P+1P.

[0361] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Previously, it performed 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band.

[0362] (11) For example: 1P+2P+0P<—1P+1P+1P; 1P+0P+2P<—1P+1P+1P; 0P+1P+2P<—1P+1P+1P.

[0363] The terminal will perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band. Previously, it performed 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively.

[0364] (12) For example: 1P+2P+0P—>1P+1P+1P; 1P+0P+2P—>1P+1P+1P; 0P+1P+2P—>1P+1P+1P.

[0365] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Previously, it performed 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band.

[0366] (13) For example: 0P+1P+0P<—2P+0P+1P; 1P+0P+0P<—0P+2P+1P; 0P+0P+1P<—2P+1P+0P.

[0367] The terminal is about to perform 1P transmission on an uplink carrier of the first frequency band, having previously performed 2P transmission on an uplink carrier of the second frequency band and 1P transmission on an uplink carrier of the third frequency band.

[0368] (14) For example: 0P+1P+0P—>2P+0P+1P; 1P+0P+0P—>0P+2P+1P; 0P+0P+1P—>2P+1P+0P.

[0369] The terminal is about to perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band, having previously performed 1P transmission on the uplink carrier of the third frequency band.

[0370] (15) For example: 0P+0P+1P<—1P+2P+0P; 0P+1P+0P<—1P+0P+2P; 1P+0P+0P<—0P+1P+2P.

[0371] The terminal is about to perform 1P transmission on an uplink carrier of the first frequency band, having previously performed 1P transmission on an uplink carrier of the second frequency band and 2P transmission on an uplink carrier of the third frequency band.

[0372] (16) For example: 0P+0P+1P—>1P+2P+0P; 0P+1P+0P—>1P+0P+2P; 1P+0P+0P—>0P+1P+2P.

[0373] The terminal is about to perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band, having previously performed 1P transmission on the uplink carrier of the third frequency band.

[0374] (17) For example: 0P+2P+0P<—2P+0P+1P; 2P+0P+0P<—0P+2P+1P; 0P+0P+2P<—2P+1P+0P.

[0375] The terminal is about to perform 2P transmission on an uplink carrier of the first frequency band, having previously performed 2P transmission on an uplink carrier of the second frequency band and 1P transmission on an uplink carrier of the third frequency band.

[0376] (18) For example: 0P+2P+0P—>2P+0P+1P; 2P+0P+0P—>0P+2P+1P; 0P+0P+2P—>2P+1P+0P.

[0377] The terminal is about to perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band, having previously performed 2P transmission on the uplink carrier of the third frequency band.

[0378] (19) For example: 0P+0P+2P<—1P+2P+0P; 0P+2P+0P<—1P+0P+2P; 2P+0P+0P<—0P+1P+2P.

[0379] The terminal is about to perform 2P transmission on an uplink carrier of the first frequency band, having previously performed 1P transmission on an uplink carrier of the second frequency band and 2P transmission on an uplink carrier of the third frequency band.

[0380] (20) For example: 0P+0P+2P—>1P+2P+0P; 0P+2P+0P—>1P+0P+2P; 2P+0P+0P—>0P+1P+2P.

[0381] The terminal is about to perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band, having previously performed 2P transmission on the uplink carrier of the third frequency band.

[0382] (21) For example: 0P+3P+0P<—2P+0P+1P; 3P+0P+0P<—0P+2P+1P; 0P+0P+3P<—2P+1P+0P.

[0383] The terminal is about to perform 3P transmission on the uplink carrier of the first frequency band, having previously performed 2P transmission on the uplink carrier of the second frequency band and 1P transmission on the uplink carrier of the third frequency band.

[0384] (22) For example: 0P+3P+0P—>2P+0P+1P; 3P+0P+0P—>0P+2P+1P; 0P+0P+3P—>2P+1P+0P.

[0385] The terminal is about to perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band, and previously performed 3P transmission on the uplink carrier of the third frequency band.

[0386] (23) For example: 0P+0P+3P<—1P+2P+0P; 0P+3P+0P<—1P+0P+2P; 3P+0P+0P<—0P+1P+2P.

[0387] The terminal is about to perform 3P transmission on the uplink carrier of the first frequency band, having previously performed 1P transmission on the uplink carrier of the second frequency band and 2P transmission on the uplink carrier of the third frequency band.

[0388] (24) For example: 0P+0P+3P—>1P+2P+0P; 0P+3P+0P—>1P+0P+2P; 3P+0P+0P—>0P+1P+2P.

[0389] The terminal is about to perform 1P transmission on an uplink carrier of the first frequency band and 2P transmission on an uplink carrier of the second frequency band, having previously performed 3P transmission on an uplink carrier of the third frequency band.

[0390] (25) For example: 0P+0P+3P—>1P+1P+1P; 0P+3P+0P—>1P+1P+1P; 3P+0P+0P—>1P+1P+1P.

[0391] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Previously, 3P transmission was performed on the uplink carrier of the first frequency band.

[0392] (26) For example: 0P+0P+3P<—1P+1P+1P; 0P+3P+0P<—1P+1P+1P; 3P+0P+0P<—1P+1P+1P.

[0393] The terminal will perform 3P transmission on the uplink carrier of the first frequency band. Previously, the terminal performed 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively.

[0394] According to the above embodiments, the embodiments of the present disclosure provide possible switching cases and possible uplink switching corresponding situations when the terminal supports switching between three frequency bands.

[0395] Example Scenario 3: Switching between Four Frequency Bands

[0396] Table 3

[0397] As shown in Table 3, the terminal supports switching between four frequency bands. There are 20 possible switching cases, and each switching case may have multiple different uplink transmission states. The four frequency bands mentioned above are included in the frequency band combination.

[0398] According to the switching cases shown in Table 3 and the uplink transmission states in each switching case, the terminal can switch from any uplink transmission state to any other uplink transmission state.

[0399] In some embodiments, as shown in Table 3, the situations corresponding to the uplink switching that may occur in the terminal include at least one of the following situations (1) to (24):

[0400] (1) For example: 2P+1P+0P+0P—>0P+0P+2P+1P; 2P+0P+1P+0P—>0P+2P+0P+1P; 2P+0P+0P+1P—>0P+2P+1P+0P; 0P+2P+1P+0P—>2P+0P+0P+1P; 0P+2P+0P+1P—>2P+0P+1P+0P; 0P+0P+2P+1P—>2P+1P+0P+0P.

[0401] The terminal will perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band, having previously performed 2P transmission on the uplink carrier of the third frequency band and 1P transmission on the uplink carrier of the fourth frequency band.

[0402] In some embodiments, the "first frequency band", "second frequency band", "third frequency band" and "fourth frequency band" mentioned in the same situation are only used to distinguish four different frequency bands and do not refer to a specific frequency band.

[0403] In some embodiments, the "first frequency band" mentioned in different situations may be the same frequency band or different frequency bands, the "second frequency band" mentioned in different situations may be the same frequency band or different frequency bands, the "third frequency band" mentioned in different situations may be the same frequency band or different frequency bands, and the "fourth frequency band" mentioned in different situations may be the same frequency band or different frequency bands.

[0404] (2) For example: 1P+2P+0P+0P—>0P+0P+1P+2P; 1P+0P+2P+0P—>0P+1P+0P+2P; 1P+0P+0P+2P—>0P+1P+2P+0P; 0P+1P+2P+0P—>1P+0P+0P+2P; 0P+1P+0P+2P—>1P+0P+2P+0P; 0P+0P+1P+2P—>1P+2P+0P+0P.

[0405] The terminal will perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band, having previously performed 1P transmission on the uplink carrier of the third frequency band and 2P transmission on the uplink carrier of the fourth frequency band.

[0406] (3) For example: 2P+1P+0P+0P—>0P+0P+1P+2P; 2P+0P+1P+0P—>0P+1P+0P+2P; 2P+0P+0P+1P—>0P+1P+2P+0P; 0P+2P+1P+0P—>1P+0P+0P+2P; 0P+2P+0P+1P—>1P+0P+2P+0P; 0P+0P+2P+1P—>1P+2P+0P+0P.

[0407] The terminal will perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band, having previously performed 2P transmission on the uplink carrier of the third frequency band and 1P transmission on the uplink carrier of the fourth frequency band.

[0408] (4) For example: 1P+2P+0P+0P—>0P+0P+2P+1P; 1P+0P+2P+0P—>0P+2P+0P+1P; 1P+0P+0P+2P—>0P+2P+1P+0P; 0P+1P+2P+0P—>2P+0P+0P+1P; 0P+1P+0P+2P—>2P+0P+1P+0P; 0P+0P+1P+2P—>2P+1P+0P+0P.

[0409] The terminal will perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band, having previously performed 1P transmission on the uplink carrier of the third frequency band and 2P transmission on the uplink carrier of the fourth frequency band.

[0410] (5) For example: 1P+1P+1P+0P—>0P+0P+0P+1P; 1P+1P+0P+1P—>0P+0P+1P+0P; 1P+0P+1P+1P—>0P+1P+0P+0P; 0P+1P+1P+1P—>1P+0P+0P+0P.

[0411] The terminal is about to perform 1P transmission on the uplink carrier of the first frequency band, and previously performed 1P transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively.

[0412] (6) For example: 1P+1P+1P+0P<—0P+0P+0P+1P; 1P+1P+0P+1P<—0P+0P+1P+0P; 1P+0P+1P+1P<—0P+1P+0P+0P; 0P+1P+1P+1P<—1P+0P+0P+0P.

[0413] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Previously, the terminal performed 1P transmission on the uplink carrier of the fourth frequency band.

[0414] (7) For example: 1P+1P+1P+0P—>0P+0P+0P+2P; 1P+1P+0P+1P—>0P+0P+2P+0P; 1P+0P+1P+1P—>0P+2P+0P+0P; 0P+1P+1P+1P—>2P+0P+0P+0P.

[0415] The terminal will perform 2P transmission on the uplink carrier of the first frequency band, and previously performed 1P transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively.

[0416] (8) For example: 1P+1P+1P+0P<—0P+0P+0P+2P; 1P+1P+0P+1P<—0P+0P+2P+0P; 1P+0P+1P+1P<—0P+2P+0P+0P; 0P+1P+1P+1P<—2P+0P+0P+0P.

[0417] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively, and previously performed 2P transmission on the uplink carrier of the fourth frequency band.

[0418] (9) For example: 1P+1P+1P+0P—>0P+0P+0P+3P; 1P+1P+0P+1P—>0P+0P+3P+0P; 1P+0P+1P+1P—>0P+3P+0P+0P; 0P+1P+1P+1P—>3P+0P+0P+0P.

[0419] The terminal will perform 3P transmission on the uplink carrier of the first frequency band, and previously performed 1P transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively.

[0420] (10) For example: 1P+1P+1P+0P<—0P+0P+0P+3P; 1P+1P+0P+1P<—0P+0P+3P+0P; 1P+0P+1P+1P<—0P+3P+0P+0P; 0P+1P+1P+1P<—3P+0P+0P+0P.

[0421] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively, and previously performed 3P transmission on the uplink carrier of the fourth frequency band.

[0422] (11) For example: 1P+0P+0P+1P—>1P+1P+1P+0P; 1P+0P+1P+0P—>1P+1P+0P+1P; 1P+1P+0P+0P—>1P+0P+1P+1P; 1P+1P+0P+0P—>0P+1P+1P+1P.

[0423] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Previously, it performed 1P transmission on the uplink carrier of the first frequency band and the uplink carrier of the fourth frequency band respectively.

[0424] (12) For example: 0P+1P+0P+1P—>1P+1P+1P+0P; 0P+1P+1P+0P—>1P+1P+0P+1P; 0P+1P+1P+0P—>1P+0P+1P+1P; 1P+0P+1P+0P—>0P+1P+1P+1P.

[0425] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Previously, it performed 1P transmission on the uplink carrier of the second frequency band and the uplink carrier of the fourth frequency band respectively.

[0426] (13) For example: 0P+0P+1P+1P—>1P+1P+1P+0P; 0P+0P+1P+1P—>1P+1P+0P+1P; 0P+1P+0P+1P—>1P+0P+1P+1P; 1P+0P+0P+1P—>0P+1P+1P+1P.

[0427] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Previously, it performed 1P transmission on the uplink carrier of the third frequency band and the uplink carrier of the fourth frequency band respectively.

[0428] (14) For example: 1P+0P+0P+1P<—1P+1P+1P+0P; 1P+0P+1P+0P<—1P+1P+0P+1P; 1P+1P+0P+0P<—1P+0P+1P+1P; 1P+1P+0P+0P<—0P+1P+1P+1P; 0P+1P+0P+1P<—1P+1P+1P+0P; 0P+1P+1P+0P<—1P+1P+0P+1P; 0P+1P+1P+0P<—1P+0P+1P+1P; 1P+0P+1P+0P<—0P+1P+1P+1P; 0P+0P+1P+1P<—1P+1P+1P+0P; 0P+0P+1P+1P<—1P+1P+0P+1P; 0P+1P+0P+1P<—1P+0P+1P+1P; 1P+0P+0P+1P<—0P+1P+1P+1P.

[0429] The terminal will perform 1P transmission on the uplink carrier of the first frequency band and the uplink carrier of the second frequency band respectively. Previously, it performed 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the third frequency band and the uplink carrier of the fourth frequency band respectively.

[0430] (15) For example: 1P+0P+0P+2P—>1P+1P+1P+0P; 1P+0P+2P+0P—>1P+1P+0P+1P; 1P+2P+0P+0P—>1P+0P+1P+1P; 2P+1P+0P+0P—>0P+1P+1P+1P.

[0431] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Previously, it performed 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the fourth frequency band.

[0432] (16) For example: 0P+1P+0P+2P—>1P+1P+1P+0P; 0P+1P+2P+0P—>1P+1P+0P+1P; 0P+2P+1P+0P—>1P+0P+1P+1P; 2P+0P+1P+0P—>0P+1P+1P+1P.

[0433] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Previously, it performed 1P transmission on the uplink carrier of the second frequency band and 2P transmission on the uplink carrier of the fourth frequency band.

[0434] (17) For example: 0P+0P+1P+2P—>1P+1P+1P+0P; 0P+0P+2P+1P—>1P+1P+0P+1P; 0P+2P+0P+1P—>1P+0P+1P+1P; 2P+0P+0P+1P—>0P+1P+1P+1P.

[0435] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Previously, it performed 1P transmission on the uplink carrier of the third frequency band and 2P transmission on the uplink carrier of the fourth frequency band.

[0436] (18) For example: 1P+0P+0P+2P<—1P+1P+1P+0P; 1P+0P+2P+0P<—1P+1P+0P+1P; 1P+2P+0P+0P<—1P+0P+1P+1P; 0P+1P+0P+2P<—1P+1P+1P+0P; 0P+1P+2P+0P<—1P+1P+0P+1P; 0P+0P+1P+2P<—1P+1P+1P+0P.

[0437] The terminal will perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band. Previously, it performed 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively.

[0438] (19) For example: 2P+1P+0P+0P<—0P+1P+1P+1P; 0P+2P+1P+0P<—1P+0P+1P+1P; 2P+0P+1P+0P<—0P+1P+1P+1P; 0P+0P+2P+1P<—1P+1P+0P+1P; 0P+2P+0P+1P<—1P+0P+1P+1P; 2P+0P+0P+1P<—0P+1P+1P+1P.

[0439] The terminal will perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band. Previously, it performed 1P transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively.

[0440] (20) For example: 2P+0P+0P+1P—>1P+1P+1P+0P; 2P+0P+1P+0P—>1P+1P+0P+1P; 2P+1P+0P+0P—>1P+0P+1P+1P; 1P+2P+0P+0P—>0P+1P+1P+1P.

[0441] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Previously, it performed 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the fourth frequency band.

[0442] (21) For example: 0P+2P+0P+1P—>1P+1P+1P+0P; 0P+2P+1P+0P—>1P+1P+0P+1P; 0P+2P+1P+0P—>1P+0P+1P+1P; 1P+0P+2P+0P—>0P+1P+1P+1P.

[0443] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Previously, it performed 2P transmission on the uplink carrier of the second frequency band and 1P transmission on the uplink carrier of the fourth frequency band.

[0444] (22) For example: 0P+0P+2P+1P—>1P+1P+1P+0P; 0P+0P+1P+2P—>1P+1P+0P+1P; 0P+1P+0P+2P—>1P+0P+1P+1P; 1P+0P+0P+2P—>0P+1P+1P+1P.

[0445] The terminal will perform 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Previously, it performed 2P transmission on the uplink carrier of the third frequency band and 1P transmission on the uplink carrier of the fourth frequency band.

[0446] (23) For example: 2P+0P+0P+1P<—1P+1P+1P+0P; 2P+0P+1P+0P<—1P+1P+0P+1P; 2P+1P+0P+0P<—1P+0P+1P+1P; 0P+2P+0P+1P<—1P+1P+1P+0P; 0P+2P+1P+0P<—1P+1P+0P+1P; 0P+0P+2P+1P<—1P+1P+1P+0P.

[0447] The terminal will perform 2P transmission on the uplink carrier of the first frequency band and 1P transmission on the uplink carrier of the second frequency band. Previously, it performed 1P transmission on the uplink carrier of the first frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively.

[0448] (24) For example: 1P+2P+0P+0P<—0P+1P+1P+1P; 0P+1P+2P+0P<—1P+0P+1P+1P; 1P+0P+2P+0P<—0P+1P+1P+1P; 0P+0P+1P+2P<—1P+1P+0P+1P; 0P+1P+0P+2P<—1P+0P+1P+1P; 1P+0P+0P+2P<—0P+1P+1P+1P.

[0449] The terminal will perform 1P transmission on the uplink carrier of the first frequency band and 2P transmission on the uplink carrier of the second frequency band. Previously, it performed 1P transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively.

[0450] According to the above embodiments, the embodiments of the present disclosure provide possible switching cases and possible uplink switching corresponding situations when the terminal supports switching between four frequency bands.

[0451] In some embodiments, "determining that a situation corresponding to an uplink switching occurs" can be interpreted as determining that one of the situations (1) to (16) listed in exemplary scenario one occurs, or determining that one of the situations (1) to (26) listed in exemplary scenario two occurs, or determining that one of the situations (1) to (24) listed in exemplary scenario three occurs.

[0452] Step S2104: The terminal performs uplink switching according to the uplink transmission to be performed.

[0453] In some embodiments, the terminal performs uplink switching within a first time according to the uplink transmission to be performed, so as to perform the uplink transmission after completing the uplink switching.

[0454] In some embodiments, the terminal does not expect (or is not expected) to perform uplink transmission on at least one frequency band within the first time. Optionally, the terminal does not expect (or is not expected) to perform uplink transmission on at least one frequency band in the frequency band combination within the first time.

[0455] In some embodiments, the terminal determines the first time based on an upcoming uplink transmission and a previous uplink transmission. Optionally, the first time is an antenna switching time. In some embodiments, the antenna switching time and the antenna switching period can be described interchangeably.

[0456] In some embodiments, the terminal switches the uplink antenna to the frequency band where transmission will be performed within the first time.

[0457] In some embodiments, "the terminal does not expect / is not expected to perform uplink transmission on at least one frequency band within the first time" can be interpreted as the terminal is not scheduled to perform uplink transmission on at least one frequency band within the first time, or the terminal does not perform uplink transmission on at least one frequency band within the first time, or the terminal performs uplink transmission on at least one frequency band within the first time but does not expect the recipient to respond to the sent uplink transmission.

[0458] In some embodiments, when one of the situations corresponding to the uplink switching listed in the optional implementation method of step S2103 occurs, the terminal performs uplink switching within the first time according to the uplink transmission to be performed, and is not expected to perform uplink transmission on at least one frequency band in the frequency band combination within the first time.

[0459] Step S2105: The network device determines that a situation corresponding to uplink switching occurs in the terminal.

[0460] In some embodiments, an optional implementation manner in which the network device determines a situation corresponding to an uplink handover occurring in the terminal is consistent with an optional implementation manner in which the terminal determines a situation corresponding to an uplink handover occurring.

[0461] The optional implementation of step S2105 can refer to the optional implementation of step S2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0462] Step S2106: The network device does not expect the terminal to perform uplink transmission on at least one frequency band within the first time.

[0463] In some embodiments, the network device determines the first time based on the uplink transmission to be performed by the terminal and the uplink transmission previously performed by the terminal. Optionally, the first time is an antenna switching time.

[0464] In some embodiments, the network device does not expect the terminal to perform uplink transmission on at least one frequency band within a first time. Optionally, the network device does not expect the terminal to perform uplink transmission on at least one frequency band in the frequency band combination within a first time.

[0465] In some embodiments, the network device does not schedule the terminal to perform uplink transmission on at least one frequency band in the frequency band combination within the first time.

[0466] In some embodiments, "the network device does not expect the terminal to perform uplink transmission on at least one frequency band within the first time" can be interpreted as the network device does not schedule the terminal to perform uplink transmission on at least one frequency band within the first time, or the network device does not receive the uplink transmission of the terminal on at least one frequency band within the first time, or the network device receives the uplink transmission of the terminal on at least one frequency band within the first time but does not perform subsequent processing on the uplink transmission.

[0467] In some embodiments, terms such as not expected, not anticipated, not desired, and not desired may be substituted for the description.

[0468] According to the embodiments of the present disclosure, the terminal determines an uplink transmission to be performed, and when a situation corresponding to an uplink handover is determined to have occurred, the terminal performs an uplink handover based on the uplink transmission to be performed. The network device determines the situation corresponding to the uplink handover of the terminal according to the same rules and does not expect the terminal to perform an uplink transmission on at least one frequency band within the first time. Therefore, the terminal and the network device can have the same understanding of the situation of the terminal's uplink handover.

[0469] The uplink handover method involved in the embodiments of the present disclosure may include at least one of steps S2101 to S2106. For example, step S2103 may be implemented as an independent embodiment, step S2105 may be implemented as an independent embodiment, steps S2103+S2104 may be implemented as an independent embodiment, and steps S2105+S2106 may be implemented as independent embodiments, but are not limited thereto.

[0470] In some embodiments, step S2101, step S2102, and step S2104 to step S2106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0471] In some embodiments, steps S2101 to S2104 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0472] FIG3A is a flow chart illustrating an uplink switching method according to an embodiment of the present disclosure. The present disclosure relates to an uplink switching method, which is performed by a terminal. The terminal supports M uplink antennas and / or supports switching between M uplink antennas. As shown in FIG3A , the method includes:

[0473] Step S3101: Send first capability information.

[0474] In some embodiments, first capability information is sent to the network device.

[0475] In some embodiments, first capability information for performing uplink switching on a frequency band combination is sent to a network device. Optionally, the frequency band combination includes at least two frequency bands. Optionally, the frequency band combination is configured with uplink carrier aggregation.

[0476] In some embodiments, the first capability information is used to indicate that the terminal supports M uplink antennas and / or supports switching between M uplink antennas.

[0477] In some embodiments, this step is optional.

[0478] According to an embodiment of the present disclosure, the terminal reports the first capability information to the network device, so that the network device can learn that the terminal supports M uplink antennas and / or switching between M uplink antennas, so that the network device can schedule the uplink transmission to be performed for the terminal, and can know what rules need to be followed to understand the uplink switching behavior of the terminal.

[0479] Step S3102, receiving first information.

[0480] In some embodiments, first information sent by a network device is received.

[0481] In some embodiments, the first information is used to schedule the terminal to perform uplink transmission. Optionally, the uplink transmission scheduled by the first information is the uplink transmission that the terminal is about to perform.

[0482] In some embodiments, the uplink transmission to be performed by the terminal includes transmission on at least one frequency band. Optionally, the uplink transmission to be performed by the terminal also includes a number of ports required for transmission on each frequency band of the at least one frequency band.

[0483] In some embodiments, the terminal determines the uplink transmission to be performed based on the first information.

[0484] In some embodiments, this step is optional. In an optional implementation, the terminal may determine the uplink transmission to be performed not based on the scheduling of the network device.

[0485] Step S3103: Determine whether a situation corresponding to uplink switching occurs.

[0486] In some embodiments, the situation corresponding to the uplink handover indicates that the terminal needs to perform an uplink handover before performing the upcoming uplink transmission.

[0487] In some embodiments, the terminal determines whether a situation corresponding to uplink switching occurs based on an uplink transmission to be performed and a previously performed uplink transmission.

[0488] The optional implementation of step S3103 can refer to the optional implementation of step S2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0489] Step S3104: Perform uplink switching according to the uplink transmission to be performed.

[0490] In some embodiments, the terminal performs uplink switching within the first time according to the uplink transmission to be performed.

[0491] In some embodiments, the terminal does not expect to perform uplink transmission on at least one frequency band within the first time. Optionally, the terminal does not expect to perform uplink transmission on at least one frequency band in the frequency band combination within the first time.

[0492] In some embodiments, the terminal determines the first time based on an upcoming uplink transmission and a previously performed uplink transmission. Optionally, the first time is an antenna switching time.

[0493] In some embodiments, the terminal switches the uplink antenna to the frequency band where transmission will be performed within the first time.

[0494] The optional implementation of step S3104 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0495] According to an embodiment of the present disclosure, an uplink switching method for a terminal with three transmission links (3Tx) or more is proposed.

[0496] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0497] FIG3B is a flow chart of an uplink switching method according to an embodiment of the present disclosure. The embodiment of the present disclosure relates to an uplink switching method, which is performed by a terminal. The terminal supports M uplink antennas and / or supports switching between M uplink antennas. As shown in FIG3B , the method includes:

[0498] Step S3201: Determine the uplink transmission to be performed.

[0499] In some embodiments, the terminal determines the uplink transmission to be performed based on the first information.

[0500] In some embodiments, the terminal receives first information sent by the network device.

[0501] In some embodiments, the first information is used to schedule the terminal to perform uplink transmission. Optionally, the uplink transmission scheduled by the first information is the uplink transmission that the terminal is about to perform.

[0502] In some embodiments, the terminal may determine the uplink transmission to be performed not based on the scheduling of the network device, for example, the terminal may independently determine the uplink transmission to be performed within a configuration grant (CG) period of the uplink transmission.

[0503] Step S3202: Determine whether a situation corresponding to uplink switching occurs.

[0504] The optional implementation of step S3202 can refer to the optional implementation of step S2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0505] Step S3203: Perform uplink switching according to the uplink transmission to be performed.

[0506] The optional implementation of step S3203 can refer to the optional implementation of step S2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0507] According to an embodiment of the present disclosure, an uplink switching method for terminals with 3Tx or above is proposed.

[0508] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0509] FIG4A is a flow chart of an uplink switching method according to an embodiment of the present disclosure. The embodiment of the present disclosure relates to an uplink switching method, which is executed by a network device, as shown in FIG4A , and includes:

[0510] Step S4101: Receive first capability information.

[0511] In some embodiments, first capability information sent by a terminal is received.

[0512] In some embodiments, the first capability information is used to indicate that the terminal supports M uplink antennas and / or supports switching between M uplink antennas. Therefore, based on the received first capability information, it is known that the terminal supports M uplink antennas and / or supports switching between M uplink antennas. For example, it can be known that the terminal supports three uplink antennas and / or supports switching between three uplink antennas.

[0513] In some embodiments, this step is optional.

[0514] Step S4102, sending the first information.

[0515] In some embodiments, the first information is sent to the terminal.

[0516] In some embodiments, the first information is used to schedule the terminal to perform uplink transmission. Optionally, the uplink transmission scheduled by the first information is the uplink transmission that the terminal is about to perform.

[0517] In some embodiments, the uplink transmission to be performed by the terminal includes transmission on at least one frequency band. Optionally, the uplink transmission to be performed by the terminal also includes a number of ports required for transmission on each frequency band of the at least one frequency band.

[0518] In some embodiments, this step is optional, and the terminal may determine the uplink transmission to be performed not based on the scheduling of the network device.

[0519] Step S4103: Determine whether the terminal has an uplink switching condition.

[0520] The optional implementation of step S4103 can be found in step S2105 of FIG. 2 , the optional implementation of step S2103 , and other related parts in the embodiment involved in FIG. 2 , which will not be described in detail here.

[0521] Step S4104: The terminal is not expected to perform uplink transmission on at least one frequency band within the first time.

[0522] In some embodiments, the network device does not expect the terminal to perform uplink transmission on at least one frequency band in the frequency band combination within the first time.

[0523] According to an embodiment of the present disclosure, an uplink switching method for terminals with 3Tx or above is proposed.

[0524] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0525] FIG4B is a flow chart of an uplink switching method according to an embodiment of the present disclosure. The embodiment of the present disclosure relates to an uplink switching method, which is executed by a network device, as shown in FIG4B , and includes:

[0526] Step S4201: Determine the uplink transmission to be performed by the terminal.

[0527] In some embodiments, the network device may determine the uplink transmission to be performed by the terminal and send first information to the terminal. The first information is used to schedule the terminal to perform uplink transmission, and the uplink transmission scheduled by the first information is the uplink transmission to be performed by the terminal.

[0528] In some embodiments, the terminal supports M uplink antennas and / or the terminal supports switching between M uplink antennas.

[0529] Step S4202: Determine whether a situation corresponding to uplink switching occurs in the terminal.

[0530] The optional implementation of step S4202 can be found in step S2105 of FIG. 2 , the optional implementation of step S2103 , and other related parts of the embodiment involved in FIG. 2 , which will not be described in detail here.

[0531] Step S4203: The terminal is not expected to perform uplink transmission on at least one frequency band within the first time.

[0532] In some embodiments, the network device does not expect the terminal to perform uplink transmission on at least one frequency band in the frequency band combination within the first time.

[0533] According to an embodiment of the present disclosure, an uplink switching method for terminals with 3Tx or above is proposed.

[0534] In the embodiments of the present disclosure, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations of other embodiments.

[0535] According to an embodiment of the present disclosure, in some embodiments, the UE indicates a first capability of uplink switching on a frequency band combination, and the band combination is configured with uplink carrier aggregation. The first capability is used to indicate that the UE supports 3 uplink antennas and / or switching between 3 uplink antennas. In a further optional embodiment, the band combination includes at least 2 bands. When one of the situations (1) to (16) listed in the exemplary scenario 1 occurs, the UE is not expected to transmit on at least one carrier or on any carrier within the first time.

[0536] According to an embodiment of the present disclosure, in some embodiments, the UE indicates a first capability of uplink switching in a band combination, and the band combination is configured with uplink carrier aggregation. The first capability is used to indicate that the UE supports switching between three uplink antennas and / or three uplink antennas. In a further optional embodiment, the band combination includes at least three bands. When one of the situations (1) to (26) listed in exemplary scenario 2 occurs, the UE is not expected to transmit on at least one carrier or on any carrier within the first time.

[0537] According to an embodiment of the present disclosure, in some embodiments, the UE indicates a first capability of uplink switching in a band combination, and the band combination is configured with uplink carrier aggregation. The first capability is used to indicate that the UE supports switching between three uplink antennas and / or three uplink antennas. In a further optional embodiment, the band combination includes at least four bands. When one of the situations (1) to (24) listed in exemplary scenario three occurs, the UE is not expected to transmit on at least one carrier or on any carrier within the first time.

[0538] The embodiments of the present disclosure further provide an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing each step performed by a terminal in any of the above methods. For another example, another apparatus is provided that includes units or modules for implementing each step performed by a network device in any of the above methods.

[0539] It should be understood that the division of the various units or modules in the above device is merely a division of logical functions. In actual implementation, they may be fully or partially integrated into a physical entity, or they may be physically separated. In addition, the units or modules in the device may be implemented in the form of a processor calling software: for example, the device includes a processor, the processor is connected to a memory, and the memory stores instructions. The processor calls the instructions stored in the memory to implement any of the above methods or implement the functions of the various units or modules of the above device, wherein the processor is, for example, a general-purpose processor, such as a central processing unit (CPU) or a microprocessor, and the memory is a memory within the device or a memory outside the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits, and the functions of some or all of the units or modules can be realized by designing the hardware circuits. The above-mentioned hardware circuits can be understood as one or more processors; for example, in one implementation, the above-mentioned hardware circuit is an application-specific integrated circuit (ASIC), which realizes the functions of some or all of the above units or modules by designing the logical relationship of the components in the circuit; for example, in another implementation, the above-mentioned hardware circuit can be realized by a programmable logic device (PLD). Taking a field programmable gate array (FPGA) as an example, it can include a large number of logic gate circuits, and the connection relationship between the logic gate circuits is configured by configuring the configuration file, thereby realizing the functions of some or all of the above units or modules. All units or modules of the above devices can be realized in the form of software called by the processor, or in the form of hardware circuits, or in part by the form of software called by the processor, and the rest by hardware circuits.

[0540] In the embodiments of the present disclosure, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction reading and execution capabilities, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationship of the hardware circuit. The logical relationship of the above-mentioned hardware circuit is fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and implementing the hardware circuit configuration can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0541] Figure 5A is a structural diagram of the terminal proposed in an embodiment of the present disclosure. As shown in Figure 5A, the terminal 5100 may include: at least one of a transceiver module 5101, a processing module 5102, etc. In some embodiments, the processing module is used to determine the uplink transmission to be performed. In some embodiments, the processing module is used to determine the situation corresponding to the uplink switching. In some embodiments, the processing module is used to perform uplink switching according to the uplink transmission to be performed. Optionally, the transceiver module is used to execute at least one of the communication steps such as sending and / or receiving (for example, step S2101, but not limited to this) executed by the terminal in any of the above methods, which will not be repeated here. Optionally, the processing module is used to execute at least one of the other steps (for example, step S2103, step S2104, but not limited to this) executed by the terminal in any of the above methods, which will not be repeated here.

[0542] Figure 5B is a schematic diagram of the structure of the network device proposed in an embodiment of the present disclosure. As shown in Figure 5B, the network device 5200 may include: at least one of a transceiver module 5201, a processing module 5202, etc. In some embodiments, the processing module is used to determine the uplink transmission that the terminal is to perform. In some embodiments, the processing module is used to determine the situation corresponding to the uplink switching of the terminal. In some embodiments, the processing module is used to not expect the terminal to perform uplink transmission on at least one frequency band within the first time. Optionally, the transceiver module is used to perform at least one of the communication steps such as sending and / or receiving (for example, step S2102, but not limited to this) performed by the network device in any of the above methods, which will not be repeated here. Optionally, the processing module is used to perform at least one of the other steps (for example, step S2105, step S2106, but not limited to this) performed by the network device in any of the above methods, which will not be repeated here.

[0543] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, and the transmitting module and the receiving module may be separate or integrated. Optionally, the transceiver module may be interchangeable with the transceiver.

[0544] In some embodiments, the processing module can be a single module or include multiple submodules. Optionally, the multiple submodules each execute all or part of the steps required to be executed by the processing module. Optionally, the processing module and the processor can be interchangeable.

[0545] Figure 6A is a schematic diagram of the structure of a communication device 6100 proposed in an embodiment of the present disclosure. Communication device 6100 can be a network device (e.g., an access network device), a terminal (e.g., a user equipment), a chip, a chip system, or a processor that supports a network device implementing any of the above methods, or a chip, a chip system, or a processor that supports a terminal implementing any of the above methods. Communication device 6100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0546] As shown in Figure 6A, the communication device 6100 includes one or more processors 6101. Processor 6101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, baseband chip, terminal device, terminal device chip, DU or CU, etc.), execute programs, and process program data. The communication device 6100 is used to perform any of the above methods.

[0547] In some embodiments, the communication device 6100 further includes one or more memories 6102 for storing instructions. Optionally, all or part of the memories 6102 may be located outside the communication device 6100.

[0548] In some embodiments, the communication device 6100 further includes one or more transceivers 6103. When the communication device 6100 includes one or more transceivers 6103, the transceiver 6103 performs at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101 and step S2102, but not limited thereto), and the processor 6101 performs at least one of the other steps (for example, steps S2103 to S2106, but not limited thereto).

[0549] In some embodiments, a transceiver may include a receiver and / or a transmitter. The receiver and transmitter may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0550] In some embodiments, the communication device 6100 may include one or more interface circuits. Optionally, the interface circuits are connected to the memory 6102 and may be used to receive signals from the memory 6102 or other devices, or to send signals to the memory 6102 or other devices. For example, the interface circuits may read instructions stored in the memory 6102 and send the instructions to the processor 6101.

[0551] The communication device 6100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 6100 described in the present disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited to FIG6A. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0552] 6B is a schematic diagram of the structure of a chip 6200 according to an embodiment of the present disclosure. If the communication device 6100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 6200 shown in FIG6B , but the present disclosure is not limited thereto.

[0553] The chip 6200 includes one or more processors 6201 , and the chip 6200 is configured to execute any of the above methods.

[0554] In some embodiments, the chip 6200 further includes one or more interface circuits 6202. Optionally, the interface circuit 6202 is connected to the memory 6203. The interface circuit 6202 can be used to receive signals from the memory 6203 or other devices, and can be used to send signals to the memory 6203 or other devices. For example, the interface circuit 6202 can read instructions stored in the memory 6203 and send the instructions to the processor 6201.

[0555] In some embodiments, the interface circuit 6202 executes at least one of the communication steps such as sending and / or receiving in the above method (for example, step S2101, step S2102, but not limited to this), and the processor 6201 executes at least one of the other steps (for example, step S2103 to step S2106, but not limited to this).

[0556] In some embodiments, terms such as interface circuit, interface, transceiver pin, and transceiver may be used interchangeably.

[0557] In some embodiments, the chip 6200 further includes one or more memories 6203 for storing instructions. Alternatively, all or part of the memories 6203 may be located outside the chip 6200.

[0558] The present disclosure also proposes a storage medium having instructions stored thereon. When the instructions are executed on the communication device 6100, the communication device 6100 executes any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a transient storage medium.

[0559] The present disclosure also provides a program product, which, when executed by the communication device 6100, enables the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0560] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

Claims

1. An uplink switching method, characterized in that: Executed by a terminal, the method includes: determining an uplink transmission to be performed; Determining that a situation corresponding to an uplink switching occurs, the situation corresponding to the uplink switching indicates that the terminal needs to perform an uplink switching before performing the uplink transmission to be performed, wherein the terminal supports M uplink antennas and / or the terminal supports switching between M uplink antennas, and M is an integer greater than or equal to 3; An uplink switching is performed according to the uplink transmission to be performed.

2. The method according to claim 1, characterized in that The method further comprises: Sending first capability information of the terminal for uplink switching in a frequency band combination, wherein the first capability information is used to indicate that the terminal supports M uplink antennas and / or that the terminal supports switching between M uplink antennas, and the frequency band combination includes at least two frequency bands.

3. The method according to claim 2, characterized in that The performing uplink switching according to the uplink transmission to be performed includes: Performing uplink switching within the first time according to the uplink transmission to be performed; The method further comprises: No uplink transmission is expected on at least one frequency band in the frequency band combination within the first time.

4. The method according to any one of claims 1 to 3, characterized in that: The uplink switching includes switching the M uplink antennas between two frequency bands.

5. The method according to claim 4, characterized in that The situation corresponding to the uplink switching includes at least one of the following situations: The terminal is about to perform 2-port transmission on an uplink carrier of a frequency band, having previously performed 1-port transmission on an uplink carrier of the frequency band and 2-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of one frequency band and 2-port transmission on an uplink carrier of another frequency band, having previously performed 2-port transmission on an uplink carrier of the frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a frequency band, having previously performed 2-port transmission on an uplink carrier of the frequency band and 1-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of one frequency band and 1-port transmission on an uplink carrier of another frequency band, having previously performed 2-port transmission on an uplink carrier of the frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, whereas previously, 1-port transmission was performed on an uplink carrier of the first frequency band and 2-port transmission was performed on an uplink carrier of the second frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, whereas previously, 2-port transmission was performed on an uplink carrier of the first frequency band and 1-port transmission was performed on an uplink carrier of the second frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of one frequency band, having previously performed 3-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of one frequency band, having previously performed 1-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of one frequency band, having previously performed 3-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of one frequency band, having previously performed 2-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of one frequency band and 1-port transmission on an uplink carrier of another frequency band, having previously performed 3-port transmission on the uplink carrier of the frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of a frequency band, having previously performed 1-port transmission on an uplink carrier of the frequency band and 1-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of one frequency band and 2-port transmission on an uplink carrier of another frequency band, having previously performed 3-port transmission on an uplink carrier of the frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of a frequency band, having previously performed 1-port transmission on an uplink carrier of the frequency band and 2-port transmission on an uplink carrier of another frequency band; The terminal will perform 2-port transmission on an uplink carrier of one frequency band and 1-port transmission on an uplink carrier of another frequency band. port transmission, previously 3-port transmission was performed on the uplink carrier of the frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of a frequency band, having previously performed 2-port transmission on an uplink carrier of the frequency band and 1-port transmission on an uplink carrier of another frequency band.

6. The method according to any one of claims 1 to 3, characterized in that: The uplink switching includes switching the M uplink antennas among three frequency bands.

7. The method according to claim 6, characterized in that The situation corresponding to the uplink switching includes at least one of the following situations: The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of the first frequency band and 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of the second frequency band and 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of the second frequency band and 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of the first frequency band and 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of the first frequency band and 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of the second frequency band and 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of the second frequency band and 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of the first frequency band and 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on the uplink carrier of the first frequency band and 1-port transmission on the uplink carrier of the second frequency band, and previously performed 1-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, after previously performing 2-port transmission on an uplink carrier of the first frequency band and 1-port transmission on an uplink carrier of the second frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, after previously performing 1-port transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of a third frequency band, respectively; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, after previously performing 1-port transmission on an uplink carrier of the first frequency band and 2-port transmission on an uplink carrier of the second frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band, having previously performed 2-port transmission on an uplink carrier of a second frequency band and 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band, having previously performed 1-port transmission on an uplink carrier of a second frequency band and 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on the uplink carrier of the first frequency band, having previously performed 2-port transmission on the uplink carrier of the second frequency band. port transmission and 1-port transmission on the uplink carrier of the third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band, having previously performed 1-port transmission on an uplink carrier of a second frequency band and 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of a first frequency band, having previously performed 2-port transmission on an uplink carrier of a second frequency band and 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 3-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of a first frequency band, having previously performed 1-port transmission on an uplink carrier of a second frequency band and 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 3-port transmission on an uplink carrier of a third frequency band; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, whereas previously 3-port transmission was performed on an uplink carrier of the first frequency band; The terminal is about to perform 3-port transmission on the uplink carrier of the first frequency band, and previously performed 1-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively.

8. The method according to any one of claims 1 to 3, characterized in that: The uplink switching includes switching the M uplink antennas among the four frequency bands in the frequency band combination.

9. The method according to claim 8, characterized in that The situation corresponding to the uplink switching includes at least one of the following situations: The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of a third frequency band and 1-port transmission on an uplink carrier of a fourth frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of a third frequency band and 2-port transmission on an uplink carrier of a fourth frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of a third frequency band and 1-port transmission on an uplink carrier of a fourth frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of a third frequency band and 2-port transmission on an uplink carrier of a fourth frequency band; The terminal is about to perform 1-port transmission on the uplink carrier of the first frequency band, and previously performed 1-port transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively; The terminal is to perform one-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, having previously performed one-port transmission on an uplink carrier of a fourth frequency band; The terminal is about to perform 2-port transmission on the uplink carrier of the first frequency band, having previously performed 1-port transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, and previously performed 2-port transmission on an uplink carrier of a fourth frequency band; The terminal is about to perform 3-port transmission on the uplink carrier of the first frequency band, having previously performed 1-port transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, and previously performed 3-port transmission on an uplink carrier of a fourth frequency band; The terminal is to perform one-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively, whereas previously, one-port transmission was performed on the uplink carrier of the first frequency band and the uplink carrier of the fourth frequency band, respectively; The terminal is to perform one-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively, whereas previously, one-port transmission was performed on the uplink carrier of the second frequency band and the uplink carrier of the fourth frequency band, respectively; The terminal will perform 1 on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively. Port transmission, previously, 1 port transmission was performed on the uplink carrier of the third frequency band and the uplink carrier of the fourth frequency band respectively; The terminal is to perform one-port transmission on an uplink carrier of a first frequency band and an uplink carrier of a second frequency band, respectively, after previously performing one-port transmission on an uplink carrier of the first frequency band, an uplink carrier of a third frequency band, and an uplink carrier of a fourth frequency band, respectively; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, after previously performing 1-port transmission on an uplink carrier of the first frequency band and 2-port transmission on an uplink carrier of a fourth frequency band; The terminal is to perform 1-port transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, after previously performing 1-port transmission on an uplink carrier of the second frequency band and 2-port transmission on an uplink carrier of the fourth frequency band; The terminal is to perform 1-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively, after previously performing 1-port transmission on the uplink carrier of the third frequency band and 2-port transmission on the uplink carrier of the fourth frequency band; The terminal is about to perform 1-port transmission on the uplink carrier of the first frequency band and 2-port transmission on the uplink carrier of the second frequency band, after previously performing 1-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively; The terminal is about to perform 2-port transmission on the uplink carrier of the first frequency band and 1-port transmission on the uplink carrier of the second frequency band, after previously performing 1-port transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band, respectively; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, after previously performing 2-port transmission on an uplink carrier of the first frequency band and 1-port transmission on an uplink carrier of a fourth frequency band; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, after previously performing 2-port transmission on an uplink carrier of the second frequency band and 1-port transmission on an uplink carrier of a fourth frequency band; The terminal is to perform 1-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively, after performing 2-port transmission on the uplink carrier of the third frequency band and 1-port transmission on the uplink carrier of the fourth frequency band; The terminal is about to perform 2-port transmission on the uplink carrier of the first frequency band and 1-port transmission on the uplink carrier of the second frequency band, after previously performing 1-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band, respectively; The terminal will perform 1-port transmission on the uplink carrier of the first frequency band and 2-port transmission on the uplink carrier of the second frequency band, after previously performing 1-port transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band and the uplink carrier of the fourth frequency band respectively.

10. An uplink switching method, characterized in that: Executed by a network device, the method includes: Determine the uplink transmission to be performed by the terminal; Determining that a situation corresponding to an uplink switching occurs at the terminal, the situation corresponding to the uplink switching indicates that the terminal needs to perform an uplink switching before performing the uplink transmission to be performed, wherein the terminal supports M uplink antennas and / or the terminal supports switching between M uplink antennas, and M is an integer greater than or equal to 3; The terminal is not expected to perform uplink transmission on at least one frequency band within the first time.

11. The method according to claim 10, characterized in that The method further comprises: First capability information of the terminal for uplink switching in a frequency band combination is received, where the first capability information is used to indicate that the terminal supports M uplink antennas and / or that the terminal supports switching between M uplink antennas, and the frequency band combination includes at least two frequency bands.

12. The method according to claim 10 or 11, characterized in that: The uplink switching includes switching the M uplink antennas between two frequency bands.

13. The method according to claim 12, characterized in that The situation corresponding to the uplink switching includes at least one of the following situations: The terminal is about to perform 2-port transmission on an uplink carrier of a frequency band, having previously performed 1-port transmission on an uplink carrier of the frequency band and 2-port transmission on an uplink carrier of another frequency band; The terminal will perform 1-port transmission on an uplink carrier of one frequency band and 2-port transmission on an uplink carrier of another frequency band. port transmission, previously 2-port transmission was performed on the uplink carrier of the frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a frequency band, having previously performed 2-port transmission on an uplink carrier of the frequency band and 1-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of one frequency band and 1-port transmission on an uplink carrier of another frequency band, having previously performed 2-port transmission on an uplink carrier of the frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, whereas previously, 1-port transmission was performed on an uplink carrier of the first frequency band and 2-port transmission was performed on an uplink carrier of the second frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, whereas previously, 2-port transmission was performed on an uplink carrier of the first frequency band and 1-port transmission was performed on an uplink carrier of the second frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of one frequency band, having previously performed 3-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of one frequency band, having previously performed 1-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of one frequency band, having previously performed 3-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of one frequency band, having previously performed 2-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of one frequency band and 1-port transmission on an uplink carrier of another frequency band, having previously performed 3-port transmission on the uplink carrier of the frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of a frequency band, having previously performed 1-port transmission on an uplink carrier of the frequency band and 1-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of one frequency band and 2-port transmission on an uplink carrier of another frequency band, having previously performed 3-port transmission on an uplink carrier of the frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of a frequency band, having previously performed 1-port transmission on an uplink carrier of the frequency band and 2-port transmission on an uplink carrier of another frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of one frequency band and 1-port transmission on an uplink carrier of another frequency band, having previously performed 3-port transmission on an uplink carrier of the frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of a frequency band, having previously performed 2-port transmission on an uplink carrier of the frequency band and 1-port transmission on an uplink carrier of another frequency band.

14. The method according to claim 10 or 11, characterized in that: The uplink switching includes switching the M uplink antennas among three frequency bands.

15. The method according to claim 14, characterized in that The situation corresponding to the uplink switching includes at least one of the following situations: The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of the first frequency band and 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of the second frequency band and 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of the second frequency band and 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of the first frequency band and 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of the first frequency band and 1-port transmission on an uplink carrier of a third frequency band; The terminal will perform 1-port transmission on the uplink carrier of the first frequency band and 2-port transmission on the uplink carrier of the second frequency band. port transmission, previously 1-port transmission was performed on the uplink carrier of the second frequency band and 2-port transmission was performed on the uplink carrier of the third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of the second frequency band and 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of the first frequency band and 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on the uplink carrier of the first frequency band and 1-port transmission on the uplink carrier of the second frequency band, and previously performed 1-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band respectively; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, after previously performing 2-port transmission on an uplink carrier of the first frequency band and 1-port transmission on an uplink carrier of the second frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, after previously performing 1-port transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of a third frequency band, respectively; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, after previously performing 1-port transmission on an uplink carrier of the first frequency band and 2-port transmission on an uplink carrier of the second frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band, having previously performed 2-port transmission on an uplink carrier of a second frequency band and 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band, having previously performed 1-port transmission on an uplink carrier of a second frequency band and 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band, having previously performed 2-port transmission on an uplink carrier of a second frequency band and 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band, having previously performed 1-port transmission on an uplink carrier of a second frequency band and 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of a first frequency band, having previously performed 2-port transmission on an uplink carrier of a second frequency band and 1-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 3-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 3-port transmission on an uplink carrier of a first frequency band, having previously performed 1-port transmission on an uplink carrier of a second frequency band and 2-port transmission on an uplink carrier of a third frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 3-port transmission on an uplink carrier of a third frequency band; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, whereas previously 3-port transmission was performed on an uplink carrier of the first frequency band; The terminal is about to perform 3-port transmission on the uplink carrier of the first frequency band, and previously performed 1-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively.

16. The method according to claim 10 or 11, characterized in that The uplink switching includes switching the M uplink antennas between four frequency bands.

17. The method according to claim 16, characterized in that The situation corresponding to the uplink switching includes at least one of the following situations: The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of a third frequency band and 1-port transmission on an uplink carrier of a fourth frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of a third frequency band and 2-port transmission on an uplink carrier of a fourth frequency band; The terminal is about to perform 1-port transmission on an uplink carrier of a first frequency band and 2-port transmission on an uplink carrier of a second frequency band, having previously performed 2-port transmission on an uplink carrier of a third frequency band and 1-port transmission on an uplink carrier of a fourth frequency band; The terminal is about to perform 2-port transmission on an uplink carrier of a first frequency band and 1-port transmission on an uplink carrier of a second frequency band, having previously performed 1-port transmission on an uplink carrier of a third frequency band and 2-port transmission on an uplink carrier of a fourth frequency band; The terminal is about to perform 1-port transmission on the uplink carrier of the first frequency band, and previously performed 1-port transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively; The terminal is to perform one-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, having previously performed one-port transmission on an uplink carrier of a fourth frequency band; The terminal is about to perform 2-port transmission on the uplink carrier of the first frequency band, having previously performed 1-port transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, and previously performed 2-port transmission on an uplink carrier of a fourth frequency band; The terminal is about to perform 3-port transmission on the uplink carrier of the first frequency band, having previously performed 1-port transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, and previously performed 3-port transmission on an uplink carrier of a fourth frequency band; The terminal is to perform one-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively, whereas previously, one-port transmission was performed on the uplink carrier of the first frequency band and the uplink carrier of the fourth frequency band, respectively; The terminal is to perform one-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively, whereas previously, one-port transmission was performed on the uplink carrier of the second frequency band and the uplink carrier of the fourth frequency band, respectively; The terminal is to perform one-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively, and previously performed one-port transmission on the uplink carrier of the third frequency band and the uplink carrier of the fourth frequency band, respectively; The terminal is to perform one-port transmission on an uplink carrier of a first frequency band and an uplink carrier of a second frequency band, respectively, after previously performing one-port transmission on an uplink carrier of the first frequency band, an uplink carrier of a third frequency band, and an uplink carrier of a fourth frequency band, respectively; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, after previously performing 1-port transmission on an uplink carrier of the first frequency band and 2-port transmission on an uplink carrier of a fourth frequency band; The terminal is to perform 1-port transmission on an uplink carrier of the first frequency band, an uplink carrier of the second frequency band, and an uplink carrier of the third frequency band, respectively, after previously performing 1-port transmission on an uplink carrier of the second frequency band and 2-port transmission on an uplink carrier of the fourth frequency band; The terminal is to perform 1-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively, after previously performing 1-port transmission on the uplink carrier of the third frequency band and 2-port transmission on the uplink carrier of the fourth frequency band; The terminal is about to perform 1-port transmission on the uplink carrier of the first frequency band and 2-port transmission on the uplink carrier of the second frequency band, after previously performing 1-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band respectively; The terminal is about to perform 2-port transmission on the uplink carrier of the first frequency band and 1-port transmission on the uplink carrier of the second frequency band, after previously performing 1-port transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band, respectively; The terminal is to perform 1-port transmission on an uplink carrier of a first frequency band, an uplink carrier of a second frequency band, and an uplink carrier of a third frequency band, respectively, after previously performing 2-port transmission on an uplink carrier of the first frequency band and 1-port transmission on an uplink carrier of a fourth frequency band; The terminal will perform 1-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively, after performing 2-port transmission on the uplink carrier of the second frequency band and 1-port transmission on the uplink carrier of the fourth frequency band. Port transfer; The terminal is to perform 1-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the second frequency band, and the uplink carrier of the third frequency band, respectively, after performing 2-port transmission on the uplink carrier of the third frequency band and 1-port transmission on the uplink carrier of the fourth frequency band; The terminal is about to perform 2-port transmission on the uplink carrier of the first frequency band and 1-port transmission on the uplink carrier of the second frequency band, after previously performing 1-port transmission on the uplink carrier of the first frequency band, the uplink carrier of the third frequency band, and the uplink carrier of the fourth frequency band, respectively; The terminal will perform 1-port transmission on the uplink carrier of the first frequency band and 2-port transmission on the uplink carrier of the second frequency band, after previously performing 1-port transmission on the uplink carrier of the second frequency band, the uplink carrier of the third frequency band and the uplink carrier of the fourth frequency band respectively.

18. A terminal, characterized in that: include: A processing module configured to determine an uplink transmission to be performed; The processing module is further configured to determine that a situation corresponding to an uplink switch occurs, where the situation corresponding to the uplink switch indicates that the terminal needs to perform an uplink switch before performing the uplink transmission to be performed, wherein the terminal supports M uplink antennas and / or the terminal supports switching between M uplink antennas, where M is an integer greater than or equal to 3; The processing module is further configured to perform uplink switching according to the uplink transmission to be performed.

19. A network device, characterized in that: include: A processing module, configured to determine an uplink transmission to be performed by the terminal; The processing module is further configured to determine that a situation corresponding to an uplink switching occurs in the terminal, where the situation corresponding to the uplink switching indicates that the terminal needs to perform an uplink switching before performing the uplink transmission to be performed, wherein the terminal supports M uplink antennas and / or the terminal supports switching between M uplink antennas, and M is an integer greater than or equal to 3; The processing module is further configured to not expect the terminal to perform uplink transmission on at least one frequency band within the first time.

20. A terminal, characterized in that: include: one or more processors; The terminal is used to execute the uplink switching method according to any one of claims 1-9.

21. A network device, characterized in that: include: one or more processors; Wherein, the network device is used to execute the uplink switching method described in any one of claims 10-17.

22. A communication system, characterized in that: It comprises a terminal and a network device, wherein the terminal is configured to implement the uplink switching method described in any one of claims 1-9, and the network device is configured to implement the uplink switching method described in any one of claims 10-17.

23. A storage medium storing instructions, characterized in that: When the instruction is executed on the communication device, the communication device is caused to execute the uplink switching method according to any one of claims 1 to 9 or any one of claims 10 to 17.

Images