Communication method, apparatus, and readable storage medium

Abstract

The application relates to the technical field of wireless communication, in particular to a communication method, device and readable storage medium. The method comprises the following steps: a UE sends first information to a base station, wherein the first information is used for indicating whether the UE supports simultaneous transmission and reception on a first frequency band combination and / or whether the UE supports simultaneous reception on the first frequency band combination; the first frequency band combination comprises a first frequency band and a second frequency band, the first frequency band is an FDD frequency band, and the second frequency band is an FDD frequency band or an SDL frequency band. By adopting the embodiment of the application, the accuracy of network scheduling and the reliability of transmission can be improved.

Description

Technical Field

[0001] This application relates to the field of wireless communication technology, and in particular to a communication method, apparatus and readable storage medium. Background Technology

[0002] Carrier aggregation (CA) is a wireless communication technology designed to improve data transmission rates and spectral efficiency in mobile communication systems. With the increasing demand from mobile users for faster speeds and more stable connections, carrier aggregation has become a crucial technology in modern mobile communication systems. The working principle of carrier aggregation is to combine multiple component carriers (CCs) together, thereby increasing the overall carrier bandwidth. For example, if an operator has two 10 MHz component carriers within the same base station, by aggregating these two 10 MHz channels into a 20 MHz bandwidth, a higher data transmission rate can be achieved. Currently, there are two types of carrier aggregation: one is aggregating component carriers within the same frequency band, called intra-band carrier aggregation; the other is aggregating component carriers in different frequency bands, called inter-band carrier aggregation.

[0003] For inter-band carrier aggregation, when the frequency band combination reported by the user equipment (UE) includes multiple frequency division duplex (FDD) bands, since FDD bands are full-duplex, network equipment (e.g., base stations) assumes that the UE supports simultaneous transmission and reception (i.e., transmitting on one frequency band while receiving on another). However, due to the spectral characteristics of the multiple frequency bands in this combination, such as whether these bands overlap and the frequency spacing between them, it may lead to problems such as high interference and poor system performance when the UE operates on these multiple frequency bands simultaneously. Summary of the Invention

[0004] This application provides a communication method, apparatus, and readable storage medium, which can improve the accuracy of network scheduling and the reliability of transmission, thereby improving system performance.

[0005] The present application is described below from different aspects. It should be understood that the different implementation methods and beneficial effects described below can be referenced from each other.

[0006] In a first aspect, this application provides a communication method applied to a first communication device, which may be a terminal device, a communication module or component of the terminal device, or a logic module or chip capable of implementing all or part of the functions of the terminal device. The method includes: the first communication device transmitting first information, the first information indicating whether the first communication device supports simultaneous transmission and reception on a first frequency band combination, and / or whether it supports simultaneous reception on the first frequency band combination. The first frequency band combination may include a first frequency band and a second frequency band. The first frequency band is an FDD band, and the second frequency band is an FDD band or a supplementary downlink (SDL) band. Further explanation of the FDD and SDL bands can be found in the following description, and will not be detailed here.

[0007] In this application, simultaneous transmission and reception can be understood as a terminal device transmitting on one frequency band while receiving on another, or a terminal device simultaneously transmitting on one frequency band and receiving on another. Simultaneous reception can be understood as a terminal device receiving on one frequency band while receiving on another, or a terminal device simultaneously receiving on two frequency bands. The meaning of "simultaneous" can be understood as at the same moment, within the same time period, or within the same cycle, etc.

[0008] In this method, the first communication device reports whether it supports the ability to simultaneously transmit and / or receive on certain (including one or more) frequency band combinations. This can reduce the possibility that the network schedules the first communication device to work simultaneously on two frequency bands with overlapping frequencies, and also reduce the possibility that the network schedules the first communication device to work simultaneously on two frequency bands with very small frequency intervals. This can improve the accuracy of network scheduling and the reliability of transmission, thereby improving system performance.

[0009] Secondly, this application provides a communication method applied to a second communication device, which may be a network device, a communication module or component of a network device, or a logic module or chip capable of implementing all or part of the functions of a network device. The method includes: the second communication device receiving first information, the first information indicating whether the first communication device supports simultaneous transmission and reception on a first frequency band combination, and / or whether it supports simultaneous reception on the first frequency band combination. The first frequency band combination may include a first frequency band and a second frequency band. The first frequency band is an FDD band, and the second frequency band is either an FDD band or an SDL band.

[0010] In conjunction with the first or second aspect, in one possible implementation, the aforementioned first frequency band combination includes at least two frequency bands, any two of which can form a band pair, and these at least two frequency bands can form at least one band pair. Therefore, the aforementioned first information can also be described as: indicating whether the first communication device supports simultaneous transmission and reception on one or more band pairs in the first frequency band combination, and / or whether it supports simultaneous reception on one or more band pairs in the first frequency band combination. Specific indication methods can be found in the description of the method embodiments below, and will not be detailed here.

[0011] It can be understood that the first and second frequency bands mentioned above are a frequency band pair.

[0012] In conjunction with the first or second aspect, in one possible implementation, the aforementioned first information may have the function of indicating one or more of the following: whether the first communication device supports simultaneous transmission on the first frequency band and reception on the second frequency band; whether the first communication device supports simultaneous reception on the first frequency band and transmission on the second frequency band; or whether the first communication device supports simultaneous reception on the first frequency band and the second frequency band.

[0013] In this method, the simultaneous transmission and reception capability or simultaneous reception capability reported by the first communication device distinguishes which frequency band is used for uplink and which is used for downlink in the frequency band pair. The granularity of its capability reporting is finer, which is more conducive to the accuracy of network scheduling and the reliability of transmission.

[0014] For example, the first information can also be used to indicate one or more of the following: whether the first communication device supports simultaneous transmission on the first frequency band and the second frequency band, and reception on the second frequency band; or, whether the first communication device supports simultaneous transmission on the first frequency band and the second frequency band, and reception on the first frequency band. This application addresses certain special scenarios, such as when the first communication device simultaneously performs uplink transmission on the first frequency band and the second frequency band, downlink reception on the first frequency band and the second frequency band may be limited; reporting the simultaneous transmission and reception capabilities of the first communication device in special scenarios is beneficial for optimizing network scheduling.

[0015] In conjunction with the second aspect, in one possible implementation, after the second communication device receives the first information, the method further includes: the second communication device determining first scheduling information and second scheduling information based on the first information, and sending the first scheduling information and second scheduling information to the first communication device. The first scheduling information is used to indicate transmission or reception on a first frequency band, and the second scheduling information is used to indicate transmission or reception on a second frequency band. The content indicated by the first scheduling information and the second scheduling information is adapted to the content indicated by the first information. In other words, if the first communication device does not support simultaneous transmission and reception on a certain frequency band pair, the second communication device may not schedule itself to simultaneously transmit and receive on that frequency band pair. Alternatively, if the first communication device does not support simultaneous reception on a certain frequency band pair, the second communication device may not schedule itself to simultaneously receive on that frequency band pair. Alternatively, if the first communication device supports simultaneous transmission and reception on a certain frequency band pair, the second communication device may schedule itself to simultaneously transmit and receive on that frequency band pair. Alternatively, if the first communication device supports simultaneous reception on a certain frequency band pair, the second communication device may schedule itself to simultaneously receive on that frequency band pair.

[0016] Therefore, when the first communication device reports to the second communication device whether it supports simultaneous transmission and / or reception on certain (including one or more) frequency band combinations, it can reduce the possibility that the second communication device will schedule the first communication device to work simultaneously on two frequency bands with overlapping frequencies, and it can also reduce the possibility that the second communication device will schedule the first communication device to work simultaneously on two frequency bands with very small frequency intervals. This can improve the accuracy of network scheduling and the reliability of transmission, thereby improving system performance.

[0017] In conjunction with the first aspect, in one possible implementation, after the first communication device sends the first information, the method further includes: the first communication device receiving first scheduling information and second scheduling information from the second communication device, the first scheduling information being used to indicate transmission or reception on a first frequency band, and the second scheduling information being used to indicate transmission or reception on a second frequency band.

[0018] In conjunction with the second aspect, in one possible implementation, if the first information indicates that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band, after the second communication device receives the first information, the method further includes: the second communication device sending third information, which is used to configure the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band, wherein the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band do not overlap.

[0019] In conjunction with the first aspect, in one possible implementation, the first information indicates that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band. After the first communication device sends the first information, the method further includes: the first communication device receiving third information, which is used to configure the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band, wherein the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band do not overlap.

[0020] For example, the third information mentioned above is semi-static configuration information. The time-domain resources corresponding to the first frequency band and the second frequency band can be semi-static resources configured by radio resource control signaling.

[0021] In this method, when the first communication device reports to the second communication device that it does not support simultaneous reception on the first frequency band and the second frequency band, the second communication device configures time domain resources corresponding to the first frequency band and the second frequency band for the first communication device respectively, and these two time domain resources do not overlap. On the one hand, this can align the simultaneous reception capability of the first communication device, improve the accuracy of network scheduling and the reliability of transmission; on the other hand, it can simplify the implementation of network scheduling.

[0022] In conjunction with the first aspect, in one possible implementation, the method further includes: the first communication device sending second information to the second communication device, the second information being used to instruct the first communication device to support receive channel switching on the first frequency band combination. For example, the second information may be used to instruct the first communication device to support receive channel switching on one or more band pairs(s) of the first frequency band combination.

[0023] In conjunction with the second aspect, in one possible implementation, the method further includes: a second communication device receiving second information, which can be used to instruct the first communication device to support receive channel switching on the first frequency band combination. For example, the second information can be used to instruct the first communication device to support receive channel switching on one or more band pairs(s) of the first frequency band combination.

[0024] The "receive channel switching" in this application can include switching of the receive radio frequency chain, which may involve switching of antenna switches, filters, phase-locked loops, low-noise amplifiers, etc. The first communication device operates on different frequency bands before and after the switching, or in other words, the frequency bands on which the first communication device receives downlink information are different before and after the switching. For example, before the receive channel switching, the first communication device receives on frequency band nA, and after the switching, the first communication device receives on frequency band nB. Furthermore, downlink operations on frequency band nA and frequency band nB cannot be simultaneous; that is, the first communication device cannot simultaneously receive downlink information on both frequency bands nA and nB. Therefore, the second information indicating that the first communication device supports receive channel switching on the first and second frequency bands can explicitly / implicitly indicate that the first communication device does not support simultaneous reception on the first and second frequency bands.

[0025] For example, the second information mentioned above may include, but is not limited to, the switching delay of the receiving channel. For instance, the delay may be less than or equal to 35 microseconds (µs), or less than or equal to 140 µs. The second information may also include one or more of the following: the frequency band before the receiving channel switching, or the frequency band after the receiving channel switching.

[0026] In conjunction with the first aspect, in one possible implementation, the method further includes: the first communication device sending fourth information to the second communication device, the fourth information indicating a second frequency band combination supported by the first communication device. The second frequency band combination may include at least two frequency bands, which may both be FDD bands, or a combination of both FDD and SDL bands. Any two of the at least two frequency bands can form a band pair. In this case, the first communication device does not report simultaneous transmission and reception capabilities for the second frequency band combination, and it is assumed that the first communication device supports simultaneous transmission and reception on all band pairs of the second frequency band combination.

[0027] In conjunction with the second aspect, in one possible implementation, the method further includes: a second communication device receiving fourth information, the fourth information indicating a second frequency band combination supported by the first communication device; the second communication device then determining, based on the fourth information, that the first communication device supports simultaneous transmission and reception on the second frequency band combination. The second frequency band combination may include at least two frequency bands, which may both be FDD bands, or a combination of both FDD and SDL bands. Any two of the at least two frequency bands can form a frequency band pair.

[0028] In this method, considering that there may be no scheduling restrictions under certain frequency band combinations (i.e., the first communication device supports simultaneous transmission and / or reception on all frequency band pairs in this frequency band combination), the first communication device can only report the frequency band combination and not report the simultaneous transmission and reception capabilities. By setting a default state, overhead can be saved.

[0029] In combination with the first or second aspect, in one possible implementation, the frequency ranges of both the first and second frequency bands are below 1 gigahertz (GHz).

[0030] Thirdly, this application provides a communication device, which may be a first communication device or a chip within a first communication device. The communication device is used to execute the methods described in the first aspect or any possible implementation thereof. The communication device includes modules for executing the methods described in the first aspect or any possible implementation thereof.

[0031] Fourthly, this application provides a communication device, which may be a second communication device or a chip within a second communication device. The communication device is used to execute the methods described in the second aspect or any possible implementation thereof. The communication device includes modules having the ability to execute the methods described in the second aspect or any possible implementation thereof.

[0032] In the third or fourth aspect, the aforementioned communication device may include a transceiver module and a processing module. Further details regarding the transceiver module and processing module can be found in the device embodiments shown below. The beneficial effects of the third and fourth aspects described above can be referenced in the relevant descriptions of the first and second aspects, and will not be repeated here.

[0033] Fifthly, this application provides a communication method applied to a first communication device, which may be a terminal device, a communication module or component of the terminal device, or a logic module or chip capable of implementing all or part of the functions of the terminal device. The method includes: the first communication device transmitting first information, the first information indicating that the first communication device does not support simultaneous transmission and reception and / or simultaneous reception on a first frequency band combination. The first frequency band combination includes a first frequency band and a second frequency band, wherein the first frequency band is an FDD band, and the second frequency band is either an FDD band or an SDL band.

[0034] In this method, the first communication device notifies the network (i.e. the second communication device) of its potential scheduling limitations by reporting capabilities it does not support (e.g., it does not support simultaneous transmission and reception on certain (including one or more) frequency band combinations), which can improve the accuracy of network scheduling and the reliability of transmission.

[0035] Sixthly, this application provides a communication method applied to a second communication device, which may be a network device, a communication module or component of a network device, or a logic module or chip capable of implementing all or part of the functions of a network device. The method includes: the second communication device receiving first information, the first information indicating that the first communication device does not support simultaneous transmission and reception and / or simultaneous reception on a first frequency band combination. The first frequency band combination includes a first frequency band and a second frequency band, wherein the first frequency band is an FDD band, and the second frequency band is either an FDD band or an SDL band.

[0036] In conjunction with the fifth or sixth aspect, in one possible implementation, the aforementioned first frequency band combination includes at least two frequency bands, any two of which can form a band pair(s), and these at least two frequency bands can form at least one band pair. Therefore, the aforementioned first information can also be described as: indicating that the first communication device does not support simultaneous transmission and / or reception on one or more band pairs in the first frequency band combination. Specific indication methods can be found in the description of the method embodiments below, and will not be detailed here.

[0037] It can be understood that the first and second frequency bands mentioned above are a frequency band pair.

[0038] In conjunction with the fifth or sixth aspect, in one possible implementation, the aforementioned first information may have the function of indicating one or more of the following: the first communication device does not support simultaneous transmission on the first frequency band and reception on the second frequency band; the first communication device does not support simultaneous reception on the first frequency band and transmission on the second frequency band; or, the first communication device does not support simultaneous reception on the first frequency band and the second frequency band.

[0039] For example, the first information described above is also used to indicate one or more of the following: the first communication device does not support simultaneous transmission on the first frequency band and the second frequency band and reception on the second frequency band; or, the first communication device does not support simultaneous transmission on the first frequency band and the second frequency band and reception on the first frequency band.

[0040] In conjunction with the sixth aspect, in one possible implementation, after the second communication device receives the first information, the method further includes: the second communication device determining first scheduling information and second scheduling information based on the first information, and sending the first scheduling information and second scheduling information to the first communication device. The first scheduling information is used to indicate transmission or reception on a first frequency band, and the second scheduling information is used to indicate transmission or reception on a second frequency band. The content indicated by the first scheduling information and the second scheduling information is adapted to the content indicated by the first information.

[0041] Therefore, when the first communication device reports to the second communication device that it does not support the ability to simultaneously transmit and / or receive on certain (including one or more) frequency band combinations, it can reduce the possibility that the second communication device will schedule the first communication device to work simultaneously on two frequency bands with overlapping frequencies, and it can also reduce the possibility that the second communication device will schedule the first communication device to work simultaneously on two frequency bands with very small frequency intervals. This can improve the accuracy of network scheduling and the reliability of transmission, thereby improving system performance.

[0042] In conjunction with the fifth aspect, in one possible implementation, after the first communication device sends the first information, the method further includes: the first communication device receiving first scheduling information and second scheduling information from the second communication device, the first scheduling information being used to indicate transmission or reception on a first frequency band, and the second scheduling information being used to indicate transmission or reception on a second frequency band.

[0043] In conjunction with the sixth aspect, in one possible implementation, if the first information indicates that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band, after the second communication device receives the first information, the method further includes: the second communication device sending the third information, which is used to configure the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band, wherein the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band do not overlap.

[0044] In conjunction with the fifth aspect, in one possible implementation, the first information indicates that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band. After the first communication device sends the first information, the method further includes: the first communication device receiving third information, which is used to configure the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band, wherein the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band do not overlap.

[0045] For example, the third information mentioned above is semi-static configuration information. The time-domain resources corresponding to the first frequency band and the second frequency band can be semi-static resources configured by radio resource control signaling.

[0046] In conjunction with the fifth or sixth aspect, in one possible implementation, the frequency ranges of both the first and second frequency bands are below 1 GHz.

[0047] In a seventh aspect, this application provides a communication device, which may be a first communication device or a chip within a first communication device. The communication device is used to perform the methods described in the fifth aspect or any possible implementation thereof. The communication device includes modules having the ability to perform the methods described in the fifth aspect or any possible implementation thereof.

[0048] Eighthly, this application provides a communication device, which may be a second communication device or a chip within a second communication device. The communication device is used to perform the methods described in the sixth aspect or any possible implementation thereof. The communication device includes modules having the capability to perform the methods described in the sixth aspect or any possible implementation thereof.

[0049] In the seventh or eighth aspect, the aforementioned communication apparatus may include a transceiver module and a processing module. Further details regarding the transceiver module and processing module can be found in the apparatus embodiments shown below. The beneficial effects of the seventh and eighth aspects described above can be referenced in the relevant descriptions of the fifth and sixth aspects, and will not be repeated here.

[0050] Ninthly, the method is applied to a first communication device, which may be a terminal device, a communication module or component of the terminal device, or a logic module or chip capable of implementing all or part of the functions of the terminal device. The method includes: the first communication device sending first information, the first information indicating that the first communication device supports receiving channel switching on a first frequency band combination, the first frequency band combination including a first frequency band and a second frequency band; the first communication device receiving second information, the second information configuring a switching pattern, the switching pattern including time-domain resources corresponding to the first frequency band and time-domain resources corresponding to the second frequency band, wherein the time-domain resources corresponding to the first frequency band and the time-domain resources corresponding to the second frequency band do not overlap. Wherein, the first frequency band is an FDD frequency band, and the second frequency band is an FDD frequency band or an SDL frequency band.

[0051] For example, the time-domain resources in this application can refer to symbols, slots, sub-frames, or radio frames, etc. "Two time-domain resources do not overlap" can be understood as two time-domain resources not sharing any orthogonal frequency division multiplexing (OFDM) symbols.

[0052] In this method, the first communication device reports to the second communication device that it supports receiving channel switching on the first frequency band combination, so that the second communication device knows that the first communication device does not support simultaneous reception on the first frequency band combination, and configures time domain resources for the first communication device to receive at different times. On the one hand, this can align the simultaneous reception capability of the first communication device, improve the accuracy of network scheduling and the reliability of transmission; on the other hand, it can simplify the implementation of network scheduling.

[0053] Tenthly, this application provides a communication method applied to a second communication device, which may be a network device, a communication module or component of a network device, or a logic module or chip capable of implementing all or part of the functions of a network device. The method includes: the second communication device receiving first information, the first information indicating that the first communication device supports receiving channel switching on a first frequency band combination, the first frequency band combination including a first frequency band and a second frequency band; the second communication device sending second information, the second information configuring a switching pattern, the switching pattern including time-domain resources corresponding to the first frequency band and time-domain resources corresponding to the second frequency band, wherein the time-domain resources corresponding to the first frequency band and the time-domain resources corresponding to the second frequency band do not overlap. Wherein, the first frequency band is an FDD frequency band, and the second frequency band is an FDD frequency band or an SDL frequency band.

[0054] In conjunction with aspect nine or ten, in one possible implementation, the aforementioned handover pattern can be semi-statically configured. For example, the handover pattern can be a semi-static handover pattern configured based on radio resource control signaling. The handover pattern can be periodic.

[0055] In conjunction with aspect nine or ten, in one possible implementation, the aforementioned first information may include, but is not limited to, the switching delay of the receiving channel. For example, this delay may be less than or equal to 35 microseconds (µs), or less than or equal to 140 µs.

[0056] For example, the first information may also include one or more of the following: the frequency band before the receiving channel switch, or the frequency band after the receiving channel switch.

[0057] In conjunction with the ninth or tenth aspect, in one possible implementation, the aforementioned first information further includes indication information that can be used to indicate that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band.

[0058] In conjunction with the ninth or tenth aspect, in one possible implementation, the frequency ranges of both the first and second frequency bands are below 1 GHz.

[0059] Eleventhly, this application provides a communication device, which may be a first communication device or a chip in a first communication device. The communication device is used to perform the methods in the ninth aspect or any possible implementation thereof. The communication device includes modules having the ability to perform the methods in the ninth aspect or any possible implementation thereof.

[0060] In a twelfth aspect, this application provides a communication device, which may be a second communication device or a chip within a second communication device. The communication device is used to perform the methods described in the tenth aspect or any possible implementation thereof. The communication device includes modules having the ability to perform the methods described in the tenth aspect or any possible implementation thereof.

[0061] In the eleventh or twelfth aspect, the aforementioned communication device may include a transceiver module and a processing module. Further details regarding the transceiver module and processing module can be found in the device embodiments shown below. The beneficial effects of the eleventh and twelfth aspects described above can be found in the relevant descriptions of the ninth and tenth aspects, and will not be repeated here.

[0062] In a thirteenth aspect, embodiments of this application provide a communication device including a processor configured to execute the methods described in the first aspect, or the second aspect, or the fifth aspect, or the sixth aspect, or the ninth aspect, or the tenth aspect, or any one of these aspects or any possible implementations thereof. The processor executes a program stored in a memory, and when the program is executed, the methods described in the first aspect, or the second aspect, or the fifth aspect, or the sixth aspect, or the ninth aspect, or the tenth aspect, or any one of these aspects or any possible implementations thereof are executed.

[0063] In conjunction with aspect thirteen, in one possible implementation, the memory is located outside the aforementioned communication device.

[0064] In conjunction with aspect thirteen, in one possible implementation, the memory is located within the aforementioned communication device.

[0065] In conjunction with aspect thirteen, in one possible implementation, the processor and memory can also be integrated into a single device; that is, the processor and memory can be integrated together. For example, the communication device can be a chip.

[0066] In conjunction with aspect thirteen, in one possible implementation, the aforementioned communication device further includes a transceiver for sending or receiving information. Exemplarily, the communication device may be a terminal device or a network device.

[0067] In a fourteenth aspect, this application provides a communication device including a processor and an interface circuit coupled together. The interface circuit is used for transmitting, receiving, or inputting / outputting information or data. The processor is used to execute program instructions that cause the communication device to perform the methods described in any possible implementation of the first, second, fifth, sixth, ninth, or tenth aspects above. The interface circuit may be a communication interface or a transceiver. The transceiver may be a radio frequency module in the communication device, or a combination of a radio frequency module and an antenna, or an input / output interface of a chip or circuit.

[0068] In a fifteenth aspect, this application provides a readable storage medium storing a computer program or instructions that, when run on a computer, cause the computer to perform the method described in any possible implementation of the first aspect, or the second aspect, or the fifth aspect, or the sixth aspect, or the ninth aspect, or the tenth aspect, or any of the aspects described above.

[0069] In a sixteenth aspect, this application provides a computer program product containing program instructions that, when executed, causes the method described in any possible implementation of the first aspect, or the second aspect, or the fifth aspect, or the sixth aspect, or the ninth aspect, or the tenth aspect, or any of the aspects, to be performed.

[0070] In a seventeenth aspect, this application provides a communication system comprising a first communication device and a second communication device. The first communication device is used to perform the method described in any possible implementation of the first aspect, or the fifth aspect, or the ninth aspect, or any of these aspects; the second communication device is used to perform the method described in any possible implementation of the second aspect, or the sixth aspect, or the tenth aspect, or any of these aspects.

[0071] The technical effects achieved in the above aspects can be referred to each other or to the beneficial effects in the method embodiments shown below, which will not be repeated here. Attached Figure Description

[0072] Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this application;

[0073] Figure 2a This is a schematic diagram of two FDD frequency bands provided in an embodiment of this application;

[0074] Figure 2b This is a schematic diagram of the FDD and SDL frequency bands provided in an embodiment of this application;

[0075] Figure 3 This is a flowchart illustrating a communication method provided in an embodiment of this application;

[0076] Figure 4 This is a flowchart illustrating another communication method provided in an embodiment of this application;

[0077] Figure 5 This is a flowchart illustrating another communication method provided in an embodiment of this application;

[0078] Figure 6 This is a schematic diagram of the structure of a possible communication device provided in the embodiments of this application;

[0079] Figure 7 This is another schematic diagram of a possible communication device provided by an embodiment of this application. Detailed Implementation

[0080] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The specific operation methods and functional descriptions in the method embodiments can also be applied to the device embodiments or system embodiments.

[0081] In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0082] In this application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. In the textual description of this application, the character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, and c can mean: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a, b, and c. Here, a, b, and c can be single or multiple.

[0083] In this application, terms such as "first" and "second" are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. For example, they distinguish different instruction information, rather than describing a specific order or sequence. Such descriptions can be interchanged where appropriate to describe solutions other than those in the embodiments of this application.

[0084] In this application, "instruction" or "for instruction" can include both direct and indirect instruction. When describing information as being used to instruct A, it can include whether the information directly or indirectly instructs A, but does not necessarily mean that the information carries A.

[0085] The indication methods involved in the embodiments of this application should be understood to cover various methods that enable the party to be indicated to obtain the information to be indicated. The information to be indicated can be sent as a whole or divided into multiple sub-information and sent separately. Moreover, the sending period and / or sending time of these sub-information can be the same or different. This application does not limit the sending method, for example.

[0086] In the embodiments of this application, "instruction" can be an explicit instruction, that is, a direct instruction through signaling, or an instruction obtained by combining other rules or parameters with parameters indicated by signaling, or by deduction. It can also be an implicit instruction, that is, an instruction obtained based on rules or relationships, or based on other parameters, or by deduction. This application does not specifically limit this.

[0087] In this application, terms such as "signaling", "information", or "information element (IE)" can be used interchangeably. There are no restrictions on the names of signaling or information, as long as they can achieve the corresponding functions.

[0088] "Sending information to XX (device)" can be understood as the destination of the information being that device. This can include sending information directly or indirectly to that device. "Receiving information from XX (device), or receiving information from XX (device)" can be understood as the source of the information being that device. This can include receiving information directly or indirectly from that device. Information may undergo necessary processing between the source and destination, such as format changes, but the destination can understand the valid information from the source. Similar expressions in this application can be understood in a similar way, and will not be elaborated further here. Furthermore, "sending" can also be understood as the "output" of the chip interface, and "receiving" can also be understood as the "input" of the chip interface. In other words, "sending" or "receiving" can occur between devices, for example, between network devices and terminal devices via an air interface; "sending" or "receiving" can also occur within a device, for example, between components, modules, chips, software modules, or hardware modules within the device via a bus, wiring, or interface.

[0089] It is understandable that information may undergo necessary processing, such as encoding and modulation, between the source and destination, but the destination can understand the valid information from the source. Similar statements in this application can be interpreted in a similar way and will not be elaborated further.

[0090] In this application, the words "exemplary," "for example," "such as," etc., are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as an "example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the term "example" is used to present concepts in a concrete manner.

[0091] In this application, expressions such as "C corresponds to D" all indicate that there is a correspondence / mapping relationship between C and D, and that D can be determined based on C. Determining D based on C includes determining D solely based on C, as well as determining D based on C and other information. Furthermore, the use of information C to determine information D can also include indirect determination, such as when information D is determined based on information E, and information E is determined based on information C.

[0092] In the embodiments of this application, "simultaneously" can be understood as at the same moment, or within the same time period, or within the same cycle, etc.

[0093] The following describes the communication system involved in this application.

[0094] The technical solutions of this application can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, 5th generation (5G) mobile communication systems or New Radio (NR) systems, Internet of Things (IoT) systems, non-terrestrial network (NTN) systems, 5.5G / 5G-Advanced (5G enhanced) systems, or future communication systems, such as 6th generation mobile communication systems. The technical solutions provided in this application can also be applied to low-frequency scenarios, high-frequency scenarios, terahertz, optical communication, licensed frequency bands, and unlicensed frequency bands.

[0095] See Figure 1 , Figure 1 This is a schematic diagram of the architecture of a communication system provided in an embodiment of this application. Figure 1 As shown, the communication system 1000 may include a radio access network 100, and optionally, the communication system 1000 may also include a core network 200 and / or an Internet 300. The radio access network 100 may include at least one radio access network (RAN) device (such as...). Figure 1 110a and 110b, collectively referred to as 110, may also include at least one terminal device (such as...). Figure 1The 120a-120j nodes (collectively referred to as 120) may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices. Figure 1 (Not shown in the image). Terminal devices connect wirelessly to wireless access network (WLAN) devices, which in turn connect wirelessly or via wired connections to core network (CN) devices. CN and WLAN devices can be independent physical devices, or they can integrate the functions of both onto a single physical device. Alternatively, a single physical device can integrate some of the functions of both CN and WLAN devices. Terminal devices and WLAN devices can be interconnected via wired or wireless connections.

[0096] Understandable. Figure 1 This is just a schematic diagram; the communication system may also include other network devices, such as wireless repeaters and wireless backhaul devices. Figure 1 It is not shown in the middle.

[0097] A radio access network (RAN) device is a device deployed in a radio access network that enables wireless communication with terminals. RAN devices can take many forms, such as base stations, evolved NodeBs (eNodeBs), transmission reception points (TRPs), next-generation NodeBs (gNBs) in 5G mobile communication systems, and base stations in future mobile communication systems.

[0098] Wireless access network equipment can be macro base stations (such as...) Figure 1 110a in the text), can also be a micro base station or an indoor station (such as... Figure 1 In the context of 110b), it can also be a relay node or donor node. Wireless access network equipment can also be open radio access network (O-RAN) equipment, cloud radio access network (CRAN) equipment, satellite or drone equipment in NTN communication, etc. Wireless access network equipment can also be access network equipment in a communication system that integrates two or more of the above systems. Wireless access network equipment can be a macro base station (such as...) Figure 1 110a in the text), can also be a micro base station or an indoor station (such as... Figure 1In 110b), it can also be a relay node or donor node, or a terminal that implements base station functions in machine-to-machine (M2M) or device-to-device (D2D) communication.

[0099] Furthermore, radio access network (RAN) equipment can also be modules or units that perform some of the functions of a base station. For example, it can be a central unit (CU), a distributed unit (DU), or a radio unit (RU). The RU can be used to transmit and receive radio signals. The CU and DU can be two independent network devices or integrated into the same network device, such as within a baseband unit (BBU). The RU can be included in radio frequency (RF) equipment, such as in a remote radio unit (RRU) or an active antenna unit (AAU). The CU can be further divided into two types of RAN nodes: CU-control plane and CU-user plane. In different systems, RAN equipment may have different names. For example, in an O-RAN system, the CU can be called an open CU (O-CU), the DU can be called an open DU (O-DU), and the RU can be called an open RU (O-RU). The wireless access network device in the embodiments of this application can be implemented by software modules, hardware modules, or a combination of software modules and hardware modules. For example, the wireless access network device can be a server loaded with corresponding software modules.

[0100] The embodiments of this application do not limit the specific technologies or device forms used in the wireless access network equipment. For ease of description, a base station is used as an example of a wireless access network equipment in the following description. It is understood that a base station can be referred to as a communication device. For example, a base station can be understood as a device with base station functions. For example, the device used to implement the functions of a base station can be a base station; or some components in a base station, such as CU, DU, etc. It can also be a device that can support the base station in implementing this function, such as a chip system, hardware circuit, software module, or hardware circuit plus software module, which can be installed in a base station or can be used in conjunction with a base station. In the embodiments of this application, the chip system can be composed of chips or can include chips and other discrete devices.

[0101] Terminal devices can be devices with wireless transceiver capabilities, capable of sending signals to or receiving signals from base stations. Terminal devices can also be called terminals, user equipment (UE), mobile stations (MS), mobile terminals (MT), etc. They are widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), the Internet of Things (IoT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, smart homes, drones, robots, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery and mobility, etc. Terminal devices can include mobile phones, tablets, computers with wireless transceiver capabilities, wearable devices, vehicles, airplanes, ships, robots, robotic arms, smart home devices, etc.

[0102] The embodiments of this application do not limit the specific technology or device form used in the terminal device. It is understood that the terminal device may be referred to as a communication device. For example, a terminal device can be understood as a device with terminal functions. For example, the device used to implement the terminal function can be a terminal device; it can also be a device capable of supporting the terminal in implementing that function, such as a chip system, hardware circuit, software module, or hardware circuit plus software module. This device can be installed in the terminal device or can be used in conjunction with the terminal device.

[0103] Base stations and terminals can be fixed or mobile. They can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can be deployed on aircraft, balloons, and satellites. The embodiments of this application do not limit the application scenarios of the base stations and terminals.

[0104] The roles of base stations and terminals can be relative, for example, Figure 1The helicopter or drone 120i can be configured as a mobile base station. For terminals 120j accessing the wireless access network 100 via 120i, terminal 120i is a base station; however, for base station 110a, 120i is a terminal, meaning that 110a and 120i communicate via a wireless air interface protocol. Of course, 110a and 120i can also communicate via a base station-to-base station interface protocol; in this case, 120i is also a base station relative to 110a. Therefore, both base stations and terminals can be collectively referred to as communication devices. Figure 1 The 110a and 110b in the text can be referred to as communication devices with base station functions. Figure 1 The 120a-120j in the text can be referred to as communication devices with terminal functions.

[0105] Communication between base stations and terminals, between base stations, and between terminals can be conducted using licensed spectrum, unlicensed spectrum, or both simultaneously. Communication can be conducted using spectrum below 6 GHz, spectrum above 6 GHz, or both simultaneously. The embodiments of this application do not limit the spectrum resources used for wireless communication.

[0106] In the embodiments of this application, the functions of the base station can be executed by modules (such as chips) within the base station, or by a control subsystem that includes base station functions. This control subsystem, including base station functions, can be a control center in the aforementioned application scenarios such as smart grids, industrial control, intelligent transportation, and smart cities. Similarly, the functions of the terminal can be executed by modules (such as chips or modems) within the terminal, or by a device that includes terminal functions.

[0107] It is understood that the system architecture described in this application is for the purpose of more clearly illustrating the technical solution of this application, and does not constitute a limitation on the technical solution provided in this application. As those skilled in the art will know, with the evolution of system architecture, the technical solution provided in this application is also applicable to similar technical problems.

[0108] The following describes some of the terms or nouns used in this application.

[0109] 1. Carrier aggregation (CA)

[0110] Carrier aggregation refers to the aggregation of two or more component carriers together to support a wider transmission bandwidth. There are two types of carrier aggregation: one is to aggregate component carriers within the same frequency band, called intra-band carrier aggregation; the other is to aggregate component carriers in different frequency bands, called inter-band carrier aggregation.

[0111] 2. FDD band, time-division duplex band, and supplementary downlink band

[0112] 5G NR frequency bands can be divided into four categories: FDD bands, Time Division Duplexing (TDD) bands, Supplementary Downlink (SDL) bands, and Supplementary Uplink (SUL) bands. FDD bands can be understood as bands that support or use FDD mode. TDD bands can be understood as bands that support or use TDD mode. SDL and SUL bands are both supplementary bands. SDL bands are downlink supplementary bands, mainly used to extend downlink coverage; SUL bands are uplink supplementary bands, mainly used to extend uplink coverage.

[0113] 3. Simultaneous transmission and reception (simultaneous Rx-Tx), simultaneous reception (simultaneous Rx-Rx)

[0114] The concurrent operation in this application can include one or more of the following: simultaneous transmission (Tx-Tx), simultaneous reception, or simultaneous transmission and reception. The embodiments of this application primarily focus on simultaneous reception and simultaneous transmission and reception. Simultaneous transmission and reception refers to the ability of a device or system to perform both transmission and reception operations simultaneously during a communication process. In this application, for inter-band carrier aggregation, simultaneous transmission and reception can be understood as the UE transmitting on one frequency band while receiving on another, or the UE simultaneously transmitting on one frequency band and receiving on another. Simultaneous reception can be understood as the UE receiving on one frequency band while receiving on another, or the UE simultaneously receiving on two frequency bands. The meaning of "simultaneous" can be understood as occurring at the same time, within the same time period, or within the same cycle, etc.

[0115] 4. Inter-band carrier aggregation

[0116] For carrier aggregation between TDD bands, and carrier aggregation between TDD and FDD bands, the UE can send simultaneous Rx-Tx Inter-Band CA capability to the base station. If the UE does not send this simultaneous Rx-Tx Inter-Band CA capability to the base station, the base station assumes that the UE does not support simultaneous Rx-Tx transmission and reception on this band combination (i.e., TDD bands with TDD bands, or TDD bands with FDD bands). For carrier aggregation between FDD bands, since FDD bands are frequency division duplex, the base station does not need to verify the UE's simultaneous Rx-Tx transmission and reception capability on this band combination, so the base station assumes that the UE supports simultaneous Rx-Tx transmission and reception on this band combination (i.e., FDD bands with FDD bands).

[0117] For example, for carrier aggregation between FDD band nA and FDD band nB (i.e., CA_nA-nB), the base station defaults to the UE supporting at least three simultaneous working modes: (1) uplink (UL) transmission of band nA and downlink (DL) reception of band nB are performed simultaneously, denoted as simultaneous(nA UL, nB DL); (2) downlink reception of band nA and uplink transmission of band nB are performed simultaneously, denoted as simultaneous(nA DL, nB UL); (3) downlink reception of band nA and downlink reception of band nB are performed simultaneously, denoted as simultaneous(nA DL, nB DL).

[0118] The SDL band is a band with only downlink bandwidth and no uplink bandwidth, and it can usually be evolved from the FDD band. In other words, for a certain FDD band, removing its uplink bandwidth will yield the SDL band. For example, if the SDL band is considered in inter-band carrier aggregation, for carrier aggregation between FDD band nA and SDL band nC (i.e., CA_nA-nC), the base station defaults to the UE supporting at least two simultaneous working modes: (1) uplink transmission of band nA and downlink reception of band nC are performed simultaneously, denoted as simultaneous(nA UL, nC DL); (2) downlink reception of band nA and downlink reception of band nC are performed simultaneously, denoted as simultaneous(nA DL, nC DL).

[0119] In some scenarios, the two FDD frequency bands in carrier aggregation may overlap, leading to significant interference and poor system performance when the UE operates simultaneously on both FDD bands (e.g., simultaneous reception and / or simultaneous transmission and reception). For example, see... Figure 2a , Figure 2a This is a schematic diagram of two FDD frequency bands provided in an embodiment of this application. Figure 2aTwo frequency bands, n5 and n8, are shown, both with frequencies below 1 GHz. Figure 2a As shown, frequency band n5 has an uplink bandwidth of 824MHz to 849MHz and a downlink bandwidth of 869MHz to 894MHz; frequency band n8 has an uplink bandwidth of 880MHz to 915MHz and a downlink bandwidth of 925MHz to 960MHz. Therefore, the downlink bandwidth of frequency band n5 overlaps with the uplink bandwidth of frequency band n8. When a UE receives data on frequency band n5 while simultaneously transmitting on frequency band n8, the time and frequency domains of the uplink and downlink transmissions overlap, resulting in significant interference. This may cause the information received on frequency band n5 to be undemodulated, leading to poor system performance.

[0120] Furthermore, in scenarios where the SDL band is introduced in inter-band carrier aggregation, there may be a problem where the interval between the FDD band and the SDL band is very small, making it impossible for the UE to support simultaneous transmission and reception. For example, see... Figure 2b , Figure 2b This is a schematic diagram of the FDD and SDL frequency bands provided in an embodiment of this application. Figure 2b The diagram shows two frequency bands, n12 and n29. Band n12 is an FDD band, and band n29 is an SDL band. Both bands have a frequency range below 1 GHz. Figure 2b As shown, band n12 has an uplink bandwidth of 669MHz to 716MHz and a downlink bandwidth of 729MHz to 746MHz; band n29 has a frequency range of 717MHz to 728MHz. Therefore, the frequency spacing between the uplink bandwidth of band n12 and band n29 is very small (only 1MHz), resulting in insufficient isolation. Due to limitations in device implementation, the UE may not be able to simultaneously transmit in band n12 and receive in band n29.

[0121] In summary, due to the spectral characteristics of multiple frequency bands in inter-band carrier aggregation (such as frequency overlap or small frequency spacing), the actual simultaneous transmission and reception capability of the UE may not match the base station's default capability. This results in significant interference for the UE and poor system performance when the base station schedules the UE to operate simultaneously on multiple frequency bands.

[0122] Based on this, embodiments of this application provide a communication method, apparatus, and readable storage medium. The method reduces the possibility of the network scheduling UE to work simultaneously on two frequency bands with overlapping frequencies by having the UE report whether it supports the ability to simultaneously transmit and / or receive on certain (including one or more) frequency band combinations. It also reduces the possibility of the network scheduling UE to work simultaneously on two frequency bands with very small frequency intervals, thereby improving the accuracy of network scheduling and the reliability of transmission.

[0123] This application describes the embodiments using "first communication device" and "second communication device" as the execution entities. The first communication device can be a terminal device (such as a UE), a communication module or component of a terminal device, or a logic module or chip capable of implementing all or part of the terminal device's functions. The second communication device can be a network device (such as a base station), a communication module or component of a network device, or a logic module or chip capable of implementing all or part of the network device's functions. This application does not limit the specific form of the first and second communication devices.

[0124] The communication method of this application embodiment is described below by way of example.

[0125] See Figure 3 , Figure 3 This is a flowchart illustrating a communication method provided in an embodiment of this application. For example... Figure 3 As shown, the communication method may include, but is not limited to, the following steps:

[0126] S101, a first communication device (e.g., a UE) sends first information to a second communication device (e.g., a base station). The first information indicates whether the first communication device supports simultaneous transmission and reception on a first frequency band combination and / or whether it supports simultaneous reception on a first frequency band combination. The first frequency band combination includes a first frequency band and a second frequency band, wherein the first frequency band is an FDD frequency band and the second frequency band is either an FDD frequency band or an SDL frequency band.

[0127] Correspondingly, the second communication device receives the first information.

[0128] In one possible implementation, a first communication device (such as a UE) can send a first frequency band combination and first information to a second communication device (such as a base station). The first frequency band combination and the first information can be carried in the same signaling or in different signaling; this application embodiment is not limited to this. The first frequency band combination can include N frequency bands, where N is an integer greater than or equal to 2. Any two frequency bands among these N frequency bands can form a band pair. These N frequency bands (i.e., the first frequency band combination) can be divided into a total of M (M is an integer greater than or equal to 1) different band pairs, where M can satisfy the following formula:

[0129]

[0130] Among them, C 2 N This represents the number of combinations of selecting two frequency bands from N frequency bands. N! represents the factorial of N, and (N-2)! represents the factorial of (N-2). For example, the frequency range of these N frequency bands is all below 1 GHz.

[0131] The aforementioned first information can be used to indicate whether the first communication device supports simultaneous transmission and reception (simultaneous Rx-Tx) on the first frequency band combination, and / or whether it supports simultaneous reception (simultaneous Rx-Rx) on the first frequency band combination. For example, the first information can be used to indicate whether the first communication device supports simultaneous transmission and reception on one or more band pairs (band pairs(s)) of the first frequency band combination (i.e., the aforementioned M frequency band pairs), and / or whether it supports simultaneous reception on one or more band pairs (band pairs(s)) of the first frequency band combination (i.e., the aforementioned M frequency band pairs). Alternatively, the aforementioned first information can be used to indicate the concurrent operation mode supported by the first communication device on the first frequency band combination, and / or the concurrent operation mode not supported by the first communication device on the first frequency band combination. For example, the first information can be used to indicate the simultaneous operation mode supported by the first communication device on one or more band pairs (band pair(s)) of the first frequency band combination (i.e., the M band pairs mentioned above), and / or the simultaneous operation mode not supported by the first communication device on one or more band pairs (band pair(s)) of the first frequency band combination (i.e., the M band pairs mentioned above).

[0132] For example, N equals 2, meaning the first frequency band combination includes two frequency bands, frequency band nA and frequency band nB, in which case M equals 1. The aforementioned first information can be used to indicate whether the first communication device supports simultaneous transmission and / or reception on the frequency band pair (nA, nB).

[0133] For example, N equals 3, meaning the first frequency band combination includes 3 frequency bands: band nA, band nB, and band nC; in this case, M equals 3, representing the frequency band pairs (nA, nB), (nA, nC), and (nB, nC). The aforementioned first information can be used to indicate whether the first communication device supports simultaneous transmission and / or reception on each frequency band pair of the first frequency band combination. Alternatively, the aforementioned first information can be used to indicate whether the first communication device supports simultaneous transmission and / or reception on a portion (one or more) of the frequency band pairs of the first frequency band combination. For example, frequency bands nA and nB are both FDD bands, and frequency band nC is a TDD band. The aforementioned first information can be used to indicate whether the first communication device supports simultaneous transmission and / or reception on frequency band pair (nA, nB). However, this first information may not indicate whether the first communication device supports simultaneous transmission and / or reception on frequency band pair (nA, nC), nor may it indicate whether the first communication device supports simultaneous transmission and / or reception on frequency band pair (nB, nC). Of course, this first information can also be used to indicate whether the first communication device supports simultaneous transmission and / or reception on frequency band pairs (nA, nB), (nA, nC), and (nB, nC) respectively. The embodiments in this application are not limited. For example, if frequency band nA is an FDD band, frequency band nB is an SDL band, and frequency band nC is a TDD band, the aforementioned first information can be used to indicate whether the first communication device supports simultaneous transmission and / or reception on frequency band pair (nA, nB). However, this first information may not indicate whether the first communication device supports simultaneous transmission and / or reception on frequency band pair (nA, nC), nor may it indicate whether the first communication device supports simultaneous transmission and / or reception on frequency band pair (nB, nC). Of course, this first information can also be used to indicate whether the first communication device supports simultaneous transmission and / or reception on frequency band pairs (nA, nB), (nA, nC), and (nB, nC) respectively. The embodiments in this application are not limited.

[0134] For clarity, the following explanation will use a band pair from the first band combination as an example. This band pair can consist of the first band and the second band.

[0135] In one possible implementation, the aforementioned N frequency bands (i.e., the first frequency band combination) include a first frequency band and a second frequency band. The first frequency band can be an FDD band, and the second frequency band can be either an FDD band or an SDL band. The frequency ranges of both the first and second frequency bands can be below 1 GHz. For example, the first and second frequency bands can be a single frequency band pair. Then, the aforementioned first information can be used to indicate one or more of the following: whether the first communication device supports simultaneous transmission on the first frequency band and reception on the second frequency band (or whether the first communication device supports simultaneous transmission on the first frequency band and reception on the second frequency band); whether the first communication device supports simultaneous reception on the first frequency band and transmission on the second frequency band (or whether the first communication device supports simultaneous transmission on the second frequency band and reception on the first frequency band); or whether the first communication device supports simultaneous reception on both the first and second frequency bands (or whether the first communication device supports reception on the first frequency band and reception on the second frequency band).

[0136] It is understood that if the first communication device supports simultaneous transmission on the first frequency band and reception on the second frequency band, then the simultaneous operation mode supported by the first communication device on the first frequency band combination includes simultaneous uplink transmission on the first frequency band and simultaneous downlink reception on the second frequency band. Conversely, if the first communication device does not support simultaneous transmission on the first frequency band and reception on the second frequency band, then the simultaneous operation mode not supported by the first communication device on the first frequency band combination includes simultaneous uplink transmission on the first frequency band and simultaneous downlink reception on the second frequency band. Similarly, if the first communication device supports simultaneous reception on the first frequency band and transmission on the second frequency band, then the simultaneous operation mode supported by the first communication device on the first frequency band combination includes simultaneous downlink reception on the first frequency band and simultaneous uplink transmission on the second frequency band. Conversely, if the first communication device does not support simultaneous reception on the first frequency band and transmission on the second frequency band, then the simultaneous operation mode not supported by the first communication device on the first frequency band combination includes simultaneous downlink reception on the first frequency band and simultaneous uplink transmission on the second frequency band. Similarly, if the first communication device supports simultaneous reception on both the first and second frequency bands, then the simultaneous operation mode supported by the first communication device on the first frequency band combination includes simultaneous downlink reception on both the first and second frequency bands. Conversely, if the first communication device does not support simultaneous reception on both the first and second frequency bands, then the simultaneous operation mode not supported by the first communication device on the first frequency band combination includes simultaneous downlink reception on both the first and second frequency bands.

[0137] In other words, the first communication device supports simultaneous transmission and / or reception on a certain frequency band pair, which is equivalent to the simultaneous operation mode supported by the first communication device on the first frequency band combination. The first communication device does not support simultaneous transmission and / or reception on a certain frequency band pair, which is equivalent to the simultaneous operation mode not supported by the first communication device on the first frequency band combination.

[0138] In one possible implementation, the aforementioned first information can be represented in the form of a bitmap, where each bit corresponds to a cross-band simultaneous operating capability of a frequency band pair. This application does not limit the specific mapping relationship between each bit in the bitmap and the various cross-band simultaneous operating capabilities of each frequency band pair.

[0139] For example, consider a band pair within a first band combination, consisting of a first band and a second band. Assume the first band is band nA and the second band is band nB. Both bands nA and nB are FDD bands. Three bits can be used to indicate the cross-band simultaneous operation capability of this band pair. These three bits correspond to: simultaneous transmission on band nA and reception on band nB (i.e., simultaneous(nA UL, nB DL)), simultaneous reception on band nA and transmission on band nB (i.e., simultaneous(nA DL, nB UL)), and simultaneous reception on both bands nA and nB (i.e., simultaneous(nADL, nB DL)). When any one of these three bits is set to 1, it indicates support for the corresponding cross-band simultaneous operation capability; when any one of these three bits is set to 0, it indicates that the corresponding cross-band simultaneous operation capability is not supported. For example, if these 3 bits are "101", it means that simultaneous(nA UL, nB DL) is supported, simultaneous(nA DL, nB UL) is not supported, and simultaneous(nADL, nB DL) is supported.

[0140] For another example, suppose band nA (i.e., the first band) is an FDD band and band nB (i.e., the second band) is an SDL band. Two bits can be used to indicate the cross-band simultaneous operation capability of this band pair. These two bits correspond to: simultaneous transmission on band nA and reception on band nB (i.e., simultaneous(nAUL, nBDL)), and simultaneous reception on both bands nA and nB (i.e., simultaneous(nADL, nBDL)). When one of these two bits is set to 1, it indicates that the cross-band simultaneous operation capability corresponding to that bit is supported; when one of these two bits is set to 0, it indicates that the cross-band simultaneous operation capability corresponding to that bit is not supported. For example, if these two bits are "10", it indicates that simultaneous(nAUL, nBDL) is supported, but simultaneous(nADL, nBDL) is not supported.

[0141] It is understood that if i of the aforementioned M frequency band pairs contain only FDD bands, and j of the frequency band pairs contain both FDD and SDL bands, the length of the aforementioned first information (existing in bitmap form) can be (3×i+2×j) bits. Here, i and j are both integers greater than or equal to 0, and 1≤(i+j)≤M. It is also understood that whether a bit in the aforementioned first information (existing in bitmap form) is set to 1 to indicate support or set to 0 to indicate support is not limited in this embodiment.

[0142] For example, the leftmost or rightmost bit among the multiple bits corresponding to a band pair can correspond to simultaneous(nA DL, nB DL). Alternatively, the leftmost bit among the multiple bits corresponding to a band pair can correspond to simultaneous(nA UL, nB DL). For example, band nA can be the band of the primary cell (Pcell), or band nA is the band with the smallest band number in the band pair; this application embodiment is not limited.

[0143] In one possible implementation, the aforementioned first information may also be used to indicate one or more of the following: whether the first communication device supports simultaneous transmission on the first frequency band and the second frequency band, and reception on the second frequency band; or, whether the first communication device supports simultaneous transmission on the first frequency band and the second frequency band, and reception on the first frequency band. For example, both the first and second frequency bands may be FDD bands. It is understood that for some frequency band combinations, uplink transmission on two frequency bands in the combination may affect downlink reception on either of those two frequency bands. Therefore, the first communication device may also report whether it supports simultaneous(nA UL, nB UL, nB DL) and / or simultaneous(nA UL, nBUL, nA DL), where nA represents the first frequency band and nB represents the second frequency band. For example, consider frequency bands n28 and n71, i.e., CA_n28-n71. The downlink bandwidth of n71 is 617MHz to 652MHz, and the uplink bandwidth is 663MHz to 698MHz. The uplink bandwidth of n28 is 703MHz to 748MHz, and the downlink bandwidth is 758MHz to 803MHz. Since the uplink bandwidth of n71 is lower than its downlink bandwidth, and the uplink bandwidths of n28 and n71 are adjacent, when the first communication device simultaneously transmits uplink on both n28 and n71, the insufficient frequency spacing between the uplink and downlink bandwidths results in significant interference to downlink reception on both n28 and n71. Therefore, when the first communication device simultaneously transmits uplink on both n28 and n71, downlink reception on both n28 and n71 may be limited. However, there are no restrictions on simultaneous transmission and reception of n28 and n71, meaning that both simultaneous (n28 UL, n71 DL) and simultaneous (n71 UL, n28 DL) are supported. In other words, when the first frequency band combination includes n28 and n71, the aforementioned first information can also be used to indicate whether the first communication device supports simultaneous (n28 UL, n71 UL, n28 DL) and / or simultaneous (n28 UL, n71 UL, n71 DL). At this point, four bits can be used to represent the cross-band simultaneous operation capability of the frequency band pair n28 and n71. These four bits correspond to four types of cross-band simultaneous operation capabilities, namely simultaneous(n28 UL, n71 DL), simultaneous(n71 UL, n28 DL), simultaneous(n28 UL, n71 UL, n28 DL), and simultaneous(n28 UL, n71 UL, n71 DL).

[0144] In one possible implementation, when the first information indicates that the first communication device does not support simultaneous reception on the first and second frequency bands, the second communication device (e.g., a base station), upon receiving the first information, can send third information to the first communication device (e.g., a UE). This third information can be used to configure the time-domain resources corresponding to the first and second frequency bands. In this application embodiment, the time-domain resources can refer to symbols, slots, sub-frames, or radio frames, etc. The time-domain resources corresponding to the first and second frequency bands do not overlap. In this application embodiment, "two time-domain resources do not overlap" can be understood as the two time-domain resources not sharing any orthogonal frequency division multiplexing (OFDM) symbols. For example, in the time domain, the first communication device may finish receiving on the first frequency band and then start receiving on the second frequency band; or the first communication device may finish receiving on the second frequency band and then start receiving on the first frequency band; or the first communication device may finish transmitting on the first frequency band and then start receiving on the second frequency band; or the first communication device may finish transmitting on the second frequency band and then start receiving on the first frequency band. For instance, the first frequency band is an FDD band, and the second frequency band is an SDL band.

[0145] For example, the aforementioned third information may be information configured using semi-static radio resource control (RRR) signaling. For instance, the third information may include a handover pattern, which may include time-domain resources corresponding to the first frequency band and the second frequency band. In other words, the handover pattern may be a semi-static handover pattern configured via RRR signaling. The handover pattern may be periodic. The semi-static configuration in this embodiment can be understood as the configuration remaining unchanged on the UE side if the network does not update the configuration. In other words, if the network does not update the handover pattern, the UE transmits (i.e., sends or receives) information according to the handover pattern included in the third information.

[0146] In this embodiment of the application, when the first communication device reports to the second communication device that it does not support simultaneous reception on the first frequency band and the second frequency band, the second communication device configures time domain resources corresponding to the first frequency band and the second frequency band for the first communication device respectively, and these two time domain resources do not overlap. On the one hand, this can align the simultaneous reception capability of the first communication device, improve the accuracy of network scheduling and the reliability of transmission; on the other hand, it can simplify the implementation of network scheduling.

[0147] In one possible implementation, the above Figure 3The communication method shown may further include: a first communication device (e.g., a UE) sending second information to a second communication device (e.g., a base station), the second information being used to instruct the first communication device to support receive channel switching on a first frequency band combination. For example, the second information may be used to instruct the first communication device to support receive channel switching on one or more band pairs (band pair(s)) of the first frequency band combination (i.e., the aforementioned M band pairs). The second information in this application embodiment may also be called receive channel switching information, or receive channel switching capability information, etc., and this application embodiment does not limit the names of the various information. "Receive channel switching" in this application embodiment may include switching of the receive radio frequency chain, which may involve switching of antenna switches, filters, phase-locked loops, low-noise amplifiers, etc. The frequency band in which the first communication device operates is different before and after the switching, or in other words, the frequency band in which the first communication device receives downlink information is different before and after the switching. For example: before the receive channel switching, the first communication device receives on frequency band nA, and after the switching, the first communication device receives on frequency band nB. Furthermore, downlink operations in frequency band nA and frequency band nB cannot operate simultaneously; that is, the first communication device cannot simultaneously receive downlink information in frequency band nA and frequency band nB.

[0148] For example, the second information mentioned above may include, but is not limited to, the receive channel switching delay. For instance, this delay may be less than or equal to 35 microseconds (µs), or less than or equal to 140 µs. In some scenarios, the receive channel switching delays for different frequency band pairs are the same; in this case, the second information may include one receive channel switching delay. In some scenarios, the receive channel switching delays for different frequency band pairs are not the same; in this case, the second information may include multiple receive channel switching delays, and one receive channel switching delay may correspond to one or more frequency band pairs. The second information may also include one or more of the following: the frequency band before the receive channel switching, or the frequency band after the receive channel switching.

[0149] It is understood that the aforementioned second information, indicating that the first communication device supports receive channel switching on the first frequency band combination, can be an explicit or implicit indication. For example, the second information includes M bits, where one bit corresponds to one frequency band pair. When a bit among these M bits is set to 1, it indicates that receive channel switching is supported on the corresponding frequency band pair; when the bit is set to 0, it indicates that receive channel switching is not supported on the corresponding frequency band pair or that it is reserved. For example, when the second information includes the receive channel switching delay for a certain frequency band pair, it indicates that receive channel switching is supported on that frequency band pair.

[0150] In one possible implementation, the second information can be carried in the same signaling as the first frequency band, or it can be carried in different signaling; this application embodiment does not limit this. For example, when the second information and the first frequency band combination are carried in different signaling, the second information can be sent after the first frequency band combination. The second information can be sent before, after, or simultaneously with the first information; this application embodiment does not limit the transmission order of the first and second information.

[0151] In one possible implementation, if the first communication device sends second information to the second communication device, and the second information indicates that the first communication device supports receiving channel switching on the first frequency band and the second frequency band, it can be stated / implied that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band. Therefore, after receiving the second information, the second communication device can send third information to the first communication device. A description of the third information can be found in the preceding description and will not be repeated here. In this implementation, the first information may not indicate whether the first communication device supports simultaneous reception on the first frequency band and the second frequency band; of course, the first information may also indicate whether the first communication device supports simultaneous reception on the first frequency band and the second frequency band, and this application embodiment is not limited to this.

[0152] In one possible implementation, the above Figure 3 The communication method shown may further include: the first communication device (e.g., UE) may send fourth information to the second communication device (e.g., base station), which may be used to indicate a second frequency band combination supported by the first communication device. The second frequency band combination may include at least two frequency bands, which may both be FDD bands, or a combination of FDD bands and SDL bands. Any two of the at least two frequency bands may form a frequency band pair. In this case, the first communication device does not report simultaneous transmission and reception capabilities for the second frequency band combination, and it is assumed that the first communication device supports simultaneous transmission and reception on all frequency band pairs of the second frequency band combination. In other words, if the UE does not report simultaneous transmission and reception capabilities for combinations that only include FDD bands, or combinations that only include FDD and SDL bands, it indicates that the UE supports simultaneous transmission and reception and / or simultaneous reception on all frequency band pairs of this frequency band combination. Accordingly, after receiving the fourth information, the second communication device can determine that the first communication device supports simultaneous transmission and reception on the second frequency band combination based on the fourth information.

[0153] It is understood that the first communication device (such as UE) in the embodiments of this application may not have scheduling restrictions under certain frequency band combinations (i.e., the UE supports simultaneous transmission and / or reception on all frequency band pairs in this frequency band combination). In this case, the first communication device may only report the frequency band combination and not report the simultaneous transmission and reception capabilities, thereby saving overhead by setting a default state.

[0154] In one possible implementation, the fourth information can be carried in the same signaling as the first frequency band, or it can be carried in different signaling; this application embodiment is not limited in this respect. For example, when the fourth information and the first frequency band are carried in different signaling, the transmission timing of the fourth information and the first frequency band is not limited.

[0155] In one possible implementation, the above Figure 3 The method shown may also include:

[0156] S102, the second communication device (e.g., a base station) sends first scheduling information and second scheduling information to the first communication device (e.g., a UE). The first scheduling information is used to instruct transmission or reception on a first frequency band, and the second scheduling information is used to instruct transmission or reception on a second frequency band. The first scheduling information and the second scheduling information are determined based on the aforementioned first information.

[0157] Accordingly, the first communication device receives the first scheduling information and the second scheduling information.

[0158] For example, after receiving the aforementioned first information, the second communication device (such as a base station) can ascertain the simultaneous transmission and / or reception capabilities of the first communication device on the first frequency band combination. The second communication device can then determine / generate / acquire first scheduling information and second scheduling information according to the instructions of the first information. The second communication device can then send the first scheduling information and the second scheduling information to the first communication device. The first scheduling information can be used to instruct transmission or reception on the first frequency band, and the second scheduling information can be used to instruct transmission or reception on the second frequency band.

[0159] For example, if the first information indicates support for simultaneous transmission on the first frequency band and reception on the second frequency band, then the first scheduling information can be used to instruct transmission on the first frequency band, and the second scheduling information can be used to instruct reception on the second frequency band. If the first information indicates that simultaneous reception on the first and second frequency bands is not supported, then when the first scheduling information instructs reception on the first frequency band, the second scheduling information cannot instruct reception on the second frequency band (but can instruct transmission on the second frequency band); conversely, when the second scheduling information instructs reception on the second frequency band, the first scheduling information cannot instruct reception on the first frequency band (but can instruct transmission on the first frequency band). In other words, the first and second scheduling information cannot schedule simultaneous reception on the first and second frequency bands. If the first information indicates that simultaneous reception on the first frequency band and transmission on the second frequency band is not supported, then the first scheduling information can be used to instruct transmission on the first frequency band, and the second scheduling information can be used to instruct reception on the second frequency band; or the first scheduling information instructs reception on the first frequency band, and the second scheduling information instructs reception on the second frequency band.

[0160] In short, the content indicated by the first scheduling information and the second scheduling information is consistent with the content indicated by the first information. In other words, if the first communication device does not support simultaneous transmission and reception on a certain frequency band pair, the second communication device may not schedule itself to transmit and receive simultaneously on that frequency band pair. Alternatively, if the first communication device does not support simultaneous reception on a certain frequency band pair, the second communication device may not schedule itself to receive simultaneously on that frequency band pair.

[0161] Accordingly, after receiving the first scheduling information and the second scheduling information, the first communication device can simultaneously send uplink information or receive downlink information on the first frequency band, and send uplink information or receive downlink information on the second frequency band, based on the first scheduling information and the second scheduling information.

[0162] The first communication device in this application embodiment reports its own capabilities (e.g., whether it supports simultaneous transmission and / or reception on certain (including one or more) frequency band combinations) to notify the network (i.e., the second communication device) of its possible scheduling limitations (e.g., what simultaneous working modes it does not support), which can improve the accuracy of network scheduling and the reliability of transmission.

[0163] See Figure 4 , Figure 4 This is a flowchart illustrating another communication method provided in an embodiment of this application. For example... Figure 4 As shown, the communication method may include, but is not limited to, the following steps:

[0164] S201, a first communication device (e.g., a UE) sends first information to a second communication device (e.g., a base station), the first information indicating that the first communication device does not support simultaneous transmission and reception and / or simultaneous reception on a first frequency band combination. The first frequency band combination includes a first frequency band and a second frequency band, the first frequency band being an FDD frequency band and the second frequency band being either an FDD frequency band or an SDL frequency band.

[0165] Correspondingly, the second communication device receives the first information.

[0166] In one possible implementation, a first communication device (e.g., a UE) can send a first frequency band combination and first information to a second communication device (e.g., a base station). The first frequency band combination and the first information can be carried in the same signaling or in different signaling, which is not limited in this embodiment. The first frequency band combination can include N frequency bands, where N is an integer greater than or equal to 2. Any two of these N frequency bands can form a band pair. These N frequency bands (i.e., the first frequency band combination) can be divided into a total of M (M is an integer greater than or equal to 1) different band pairs. M satisfies the above formula (1-1). For example, the frequency range of these N frequency bands is all below 1 GHz. The aforementioned first information can be used to indicate that the first communication device does not support simultaneous transmission and reception (simultaneous Rx-Tx) and / or simultaneous reception (simultaneous Rx-Rx) on one or more band pairs (band pairs(s)) of the first frequency band combination. Alternatively, the aforementioned first information can be used to indicate that the first communication device does not support simultaneous operation modes on the first frequency band combination. For example, the first information can be used to indicate a mode in which the first communication device does not support simultaneous operation on one or more frequency band pairs in the first frequency band combination.

[0167] For clarity, the following explanation will use a band pair from the first band combination as an example. This band pair can consist of the first band and the second band.

[0168] In one possible implementation, the aforementioned N frequency bands (i.e., the first frequency band combination) include a first frequency band and a second frequency band. The first frequency band can be an FDD band, and the second frequency band can be either an FDD band or an SDL band. The frequency ranges of both the first and second frequency bands can be below 1 GHz. For example, the first and second frequency bands can be a frequency band pair. If the first communication device does not support simultaneous transmission and / or reception on the first and second frequency bands (i.e., a frequency band pair), the first communication device can send first information to the second communication device. This first information can indicate one or more of the following: the first communication device does not support simultaneous transmission on the first frequency band and reception on the second frequency band (or the first communication device does not support simultaneous transmission on the first frequency band and reception on the second frequency band); the first communication device does not support simultaneous reception on the first frequency band and transmission on the second frequency band (or the first communication device does not support simultaneous transmission on the second frequency band and reception on the first frequency band); or, the first communication device does not support simultaneous reception on the first and second frequency bands (or the first communication device does not support simultaneous reception on the first frequency band and reception on the second frequency band). For example, when the first frequency band is an FDD band and the second frequency band is an SDL band, the first information can be used to indicate one or more of the following: the first communication device does not support simultaneous transmission on the first frequency band and reception on the second frequency band (or the first communication device does not support simultaneous transmission on the first frequency band and reception on the second frequency band); or, the first communication device does not support simultaneous reception on the first frequency band and the second frequency band (or the first communication device does not support simultaneous reception on the first frequency band and reception on the second frequency band).

[0169] If the first communication device supports simultaneous transmission and reception on the first frequency band and the second frequency band, the first communication device does not transmit the first information for the first frequency band and the second frequency band.

[0170] In other words, for any frequency band pair in the first frequency band combination mentioned above, when the first communication device does not support simultaneous transmission and reception on the frequency band pair, the first communication device sends a first message to the second communication device, indicating that it does not support simultaneous transmission and reception on the frequency band pair; when the first communication device supports simultaneous transmission and reception on the frequency band pair, the first communication device may not send the first message, indicating (or defaulting) that it supports simultaneous transmission and reception on the frequency band pair.

[0171] For example, the first frequency band combination mentioned above includes two frequency bands (i.e., N equals 2), namely frequency band nA and frequency band nB. If both frequency band nA and frequency band nB are FDD frequency bands, then the frequency band pair (nA, nB) has at least three cross-band simultaneous working capabilities: simultaneously transmitting on frequency band nA and receiving on frequency band nB (i.e., simultaneous(nA UL, nB DL)), simultaneously receiving on frequency band nA and transmitting on frequency band nB (i.e., simultaneous(nA DL, nB UL)), and simultaneously receiving on both frequency band nA and frequency band nB (i.e., simultaneous(nA DL, nB DL)). These three cross-band simultaneous operation capabilities can be represented by three sub-information items. For example, sub-information a can be used to indicate that simultaneous(nA UL, nB DL) is not supported; sub-information b can be used to indicate that simultaneous(nA DL, nB UL) is not supported; and sub-information c can be used to indicate that simultaneous(nADL, nBDL) is not supported. If the first communication device does not support at least one of simultaneous(nA UL, nB DL), simultaneous(nA DL, nB UL), and simultaneous(nA DL, nB DL), then the first communication device can send the first information to the second communication device. If the first communication device supports simultaneous(nA UL, nB DL), simultaneous(nA DL, nB UL), and simultaneous(nA DL, nB DL), the first communication device does not send the first information, indicating / assuming that it can support simultaneous(nA UL, nB DL), simultaneous(nA DL, nB UL), and simultaneous(nA DL, nB DL). Wherein, if the first communication device does not support simultaneous(nA UL, nB DL), the first information may include sub-information a. Conversely, if the first communication device supports simultaneous(nA UL, nB DL), the first information does not include sub-information a. If the first communication device does not support simultaneous(nA DL, nB UL), the first information may include sub-information b. Conversely, if the first communication device supports simultaneous(nA DL, nB UL), the first information does not include sub-information b. If the first communication device does not support simultaneous(nA DL, nB DL), the first information may include sub-information c. Conversely, if the first communication device supports simultaneous(nADL, nB DL), the first information does not include sub-information c.

[0172] If frequency band nA is an FDD band and frequency band nB is an SDL band, then the frequency band pair (nA, nB) has at least two cross-band simultaneous operating capabilities: simultaneously transmitting on frequency band nA and receiving on frequency band nB (i.e., simultaneous(nA UL, nB DL)), and simultaneously receiving on both frequency band nA and frequency band nB (i.e., simultaneous(nA DL, nB DL)). These two cross-band simultaneous operating capabilities can be represented by two sub-information, such as sub-information a indicating that simultaneous(nA UL, nB DL) is not supported; and sub-information c indicating that simultaneous(nA DL, nB DL) is not supported. If the first communication device does not support at least one of simultaneous(nA UL, nB DL) or simultaneous(nA DL, nB DL), then the first communication device can send first information to the second communication device. If the first communication device supports simultaneous(nAUL, nB DL) and simultaneous(nADL, nB DL), the first communication device does not send the first information, indicating / assuming that it can support simultaneous(nAUL, nB DL) and simultaneous(nADL, nB DL). Specifically, if the first communication device does not support simultaneous(nAUL, nB DL), the first information may include sub-information a. Conversely, if the first communication device supports simultaneous(nA UL, nB DL), the first information does not include sub-information a. If the first communication device does not support simultaneous(nA DL, nB DL), the first information may include sub-information c. Conversely, if the first communication device supports simultaneous(nA DL, nB DL), the first information does not include sub-information c.

[0173] In some scenarios, the aforementioned sub-information a, sub-information b, or sub-information c can be carried through different signaling methods. For example, sub-information a can be carried in signaling 1, sub-information b can be carried in signaling 2, and sub-information c can be carried in signaling 3. In some scenarios, the aforementioned sub-information a, sub-information b, and sub-information c can each be 1 bit. For example, if the first communication device does not support simultaneous(nAUL, nBDL), the value of sub-information a is 1; if the first communication device does not support simultaneous(nADL, nBUL), the value of sub-information b is 1; if the first communication device does not support simultaneous(nADL, nBDL), the value of sub-information c is 1.

[0174] For example, the first frequency band combination includes three frequency bands (N equals 3): band nA, band nB, and band nC. These three frequency bands can form three frequency band pairs (M equals 3): (nA, nB), (nA, nC), and (nB, nC). It can be understood that when any one of these three frequency band pairs consists entirely of FDD bands, then that frequency band pair possesses at least three types of simultaneous cross-band operation capabilities. When any one of these three frequency band pairs consists of an FDD band and an SDL band, then that frequency band pair possesses at least two types of simultaneous cross-band operation capabilities.

[0175] Taking frequency bands nA and nB as FDD bands and frequency band nC as an SDL band as an example: Frequency band pair (nA, nB) must have at least three cross-band simultaneous operating capabilities: simultaneous(nA UL, nB DL), simultaneous(nA DL, nBUL), and simultaneous(nA DL, nB DL). Frequency band pair (nA, nC) must have at least two cross-band simultaneous operating capabilities: simultaneous(nA UL, nC DL) and simultaneous(nA DL, nC DL). Frequency band pair (nB, nC) must have at least two cross-band simultaneous operating capabilities: simultaneous(nB UL, nC DL) and simultaneous(nB DL, nCDL). Sub-information 'a' may include sub-information a1, a2, and a3. Sub-information a1 indicates that simultaneous(nA UL, nBDL) is not supported, sub-information a2 indicates that simultaneous(nAUL, nC DL) is not supported, and sub-information a3 indicates that simultaneous(nB UL, nC DL) is not supported. Sub-information 'b' may be used to indicate that simultaneous(nA DL, nB UL) is not supported. Sub-information 'c' may include sub-information c1, c2, and c3. Sub-information c1 may be used to indicate that simultaneous(nADL, nBDL) is not supported, sub-information c2 may be used to indicate that simultaneous(nA DL, nC DL) is not supported, and sub-information c3 may be used to indicate that simultaneous(nB DL, nC DL) is not supported.

[0176] If the first communication device does not support at least one of the following: simultaneous(nA UL, nB DL), simultaneous(nA DL, nBUL), simultaneous(nA DL, nB DL), simultaneous(nAUL, nC DL), simultaneous(nADL, nCDL), simultaneous(nB UL, nC DL), or simultaneous(nB DL, nC DL), then the first communication device may send the first information to the second communication device. If the first communication device supports simultaneous transmission and reception on all frequency pairs of the first frequency band combination, the first communication device does not send the first information, indicating / assuming that it can support simultaneous(nAUL, nBDL), simultaneous(nADL, nBUL), simultaneous(nADL, nBDL), simultaneous(nAUL, nCDL), simultaneous(nADL, nCDL), simultaneous(nBUL, nCDL), and simultaneous(nBDL, nCDL). Wherein, if the first communication device does not support simultaneous(nAUL, nBDL), the first information may include sub-information a, which includes sub-information a1. If the first communication device does not support simultaneous(nAUL, nCDL), the first information may include sub-information a, which includes sub-information a2. If the first communication device does not support simultaneous(nB UL, nC DL), the first information may include sub-information a, which includes sub-information a3. Sub-information a1, a2, and a3 are each 1 bit and exist in sub-information a in the form of a bitmap. If the first communication device does not support simultaneous(nA DL, nB UL), the first information may include sub-information b. If the first communication device does not support simultaneous(nADL, nB DL), the first information may include sub-information c, which includes sub-information c1. If the first communication device does not support simultaneous(nADL, nC DL), the first information may include sub-information c, which includes sub-information c2. If the first communication device does not support simultaneous(nB DL, nC DL), the first information may include sub-information c, which includes sub-information c3. Similarly, sub-information c1, c2 and c3 are each 1 bit, existing in the form of a bitmap in sub-information c.

[0177] In some scenarios, the aforementioned sub-information a, sub-information b, and sub-information c can be carried through different signaling methods. For example, sub-information a can be carried in signaling 1, sub-information b can be carried in signaling 2, and sub-information c can be carried in signaling 3. In some scenarios, the aforementioned sub-information a1, a2, a3, b, c1, c2, and c3 can each be 1 bit.

[0178] In one possible implementation, the aforementioned first information may also be used to indicate one or more of the following: the first communication device does not support simultaneous transmission on the first frequency band and the second frequency band, and reception on the second frequency band; or, the first communication device does not support simultaneous transmission on the first frequency band and the second frequency band, and reception on the first frequency band. For example, both the first frequency band and the second frequency band may be FDD frequency bands.

[0179] In one possible implementation, if the first information indicates that the first communication device does not support simultaneous reception on the first and second frequency bands, the second communication device (e.g., a base station), upon receiving the first information, can send third information to the first communication device (e.g., a UE). This third information can be used to configure the time-domain resources corresponding to the first and second frequency bands. The time-domain resources corresponding to the first and second frequency bands do not overlap. For further explanation regarding the third information, the time-domain resources corresponding to the first and second frequency bands, please refer to the foregoing. Figure 3 The relevant descriptions in the illustrated embodiments will not be repeated here.

[0180] In one possible implementation, the above Figure 4 The method shown may also include:

[0181] S202, the second communication device (e.g., a base station) sends first scheduling information and second scheduling information to the first communication device (e.g., a UE). The first scheduling information is used to instruct transmission or reception on a first frequency band, and the second scheduling information is used to instruct transmission or reception on a second frequency band. The first scheduling information and the second scheduling information are determined based on the aforementioned first information.

[0182] For example, after receiving the aforementioned first information, the second communication device (such as a base station) can determine which frequency band pairs in the first frequency band combination do not support simultaneous transmission and / or reception. The second communication device can then determine / generate / acquire first scheduling information and second scheduling information according to the indication of the first information. The second communication device can then send the first scheduling information and the second scheduling information to the first communication device. It is understood that the content indicated by the first scheduling information and the content indicated by the second scheduling information are compatible with the content indicated by the first information. In other words, if the first communication device does not support simultaneous transmission and reception on a certain frequency band pair, the second communication device may not schedule its simultaneous transmission and reception on that frequency band pair. Alternatively, if the first communication device does not support simultaneous reception on a certain frequency band pair, the second communication device may not schedule its simultaneous reception on that frequency band pair.

[0183] Accordingly, after receiving the first scheduling information and the second scheduling information, the first communication device can simultaneously send uplink information or receive downlink information on the first frequency band, and send uplink information or receive downlink information on the second frequency band, based on the first scheduling information and the second scheduling information.

[0184] The first communication device in this application embodiment can improve the accuracy of network scheduling and the reliability of transmission by reporting its own unsupported capabilities (e.g., not supporting simultaneous transmission and / or reception on certain (including one or more) frequency band combinations) to notify the network (i.e. the second communication device) of its possible scheduling limitations (e.g., what simultaneous working modes it does not support).

[0185] As an optional embodiment, the first communication device (e.g., UE) may also send information X to the second communication device (e.g., base station). Information X can be used to indicate the simultaneous operation mode supported by the first communication device on a first frequency band combination. The first frequency band combination includes a first frequency band and a second frequency band, where the first frequency band is an FDD band and the second frequency band is either an FDD band or an SDL band. For example, information X can be used to indicate one or more of the following: the first communication device supports simultaneous transmission on the first frequency band and reception on the second frequency band; the first communication device supports simultaneous reception on the first frequency band and transmission on the second frequency band; or, the first communication device supports simultaneous reception on both the first and second frequency bands.

[0186] Accordingly, the second communication device receives the information X and determines / generates / acquires the first scheduling information and the second scheduling information based on the information X. The second communication device can then send the first scheduling information and the second scheduling information to the first communication device. The content indicated by the first scheduling information and the content indicated by the second scheduling information match the content indicated by the information X. For example, if information X indicates that the first communication device supports transmission on the first frequency band and reception on the second frequency band, the second communication device can schedule its transmission on the first frequency band and reception on the second frequency band to occur simultaneously. Similarly, if information X indicates that the first communication device supports simultaneous reception on the first frequency band and the second frequency band, the second communication device can schedule its reception on the first frequency band and reception on the second frequency band to occur simultaneously.

[0187] The first communication device in this application improves the accuracy of network scheduling and the reliability of transmission by reporting its supported capabilities (e.g., supporting simultaneous transmission and / or reception on certain (including one or more) frequency band combinations).

[0188] See Figure 5 , Figure 5 This is a flowchart illustrating another communication method provided in an embodiment of this application. For example... Figure 5 As shown, the communication method may include, but is not limited to, the following steps:

[0189] S301, a first communication device (e.g., a UE) sends first information to a second communication device (e.g., a base station), the first information being used to instruct the first communication device to support receive channel switching on a first frequency band combination. The first frequency band combination includes a first frequency band and a second frequency band, the first frequency band being an FDD frequency band and the second frequency band being either an FDD frequency band or an SDL frequency band.

[0190] Correspondingly, the second communication device receives the first information.

[0191] In one possible implementation, a first communication device (such as a UE) can send a first frequency band combination and first information to a second communication device (such as a base station). The first frequency band combination and the first information can be carried in the same signaling or in different signaling, which is not limited in this embodiment. The first frequency band combination can include N frequency bands, where N is an integer greater than or equal to 2. Any two frequency bands among these N frequency bands can form a band pair. These N frequency bands (i.e., the first frequency band combination) can be divided into a total of M (M is an integer greater than or equal to 1) different band pairs. M can satisfy the above formula (1-1). For example, the frequency range of these N frequency bands is all below 1 GHz.

[0192] The first information can be used to instruct the first communication device to support receive channel switching on the first frequency band combination. For example, the first information can be used to instruct the first communication device to support receive channel switching on one or more band pairs (band pair(s)) of the first frequency band combination (i.e., the aforementioned M band pairs). The first information in this application embodiment can also be called receive channel switching information, or receive channel switching capability information, etc., and this application embodiment does not limit its name. For the meaning of receive channel switching, please refer to the foregoing. Figure 3 The relevant descriptions in the illustrated embodiments will not be repeated here.

[0193] For example, N equals 2, meaning the first frequency band combination includes two frequency bands, frequency band nA and frequency band nB, in which case M equals 1. The aforementioned first information can be used to instruct the first communication device to support receive channel switching on the frequency band pair (nA, nB). In other words, this first information can be used to instruct the first communication device to support receiving channel switching from frequency band nA to frequency band nB, or from frequency band nB to frequency band nA.

[0194] For example, N equals 3, meaning the first frequency band combination includes three frequency bands: band nA, band nB, and band nC. In this case, M equals 3, representing the frequency band pairs (nA, nB), (nA, nC), and (nB, nC). This first information can be used to instruct the first communication device to support receive channel switching on the frequency band pairs (nA, nB), (nA, nC), and / or (nB, nC). For instance, if bands nA and nB are both FDD bands and band nC is a TDD band, the first information can be used to instruct the first communication device to support receive channel switching on the frequency band pair (nA, nB). For example, if frequency bands nA and nB are both FDD bands and frequency band nC is an SDL band, the aforementioned first information can be used to instruct the first communication device to support receiving channel switching on frequency band pairs (nA, nB), (nA, nC), and (nB, nC); or, the first information can be used to instruct the first communication device to support receiving channel switching on frequency band pairs (nA, nC) and (nB, nC).

[0195] In one possible implementation, the aforementioned first information may include, but is not limited to, the receive channel switching delay. For example, this delay may be less than or equal to 35 microseconds (µs), or less than or equal to 140 µs. In some scenarios, the receive channel switching delays for different frequency band pairs are the same; in this case, the first information may include one receive channel switching delay. In some scenarios, the receive channel switching delays for different frequency band pairs are not the same; in this case, the first information may include multiple receive channel switching delays, and one receive channel switching delay may correspond to one or more frequency band pairs. The first information may also include one or more of the following: the frequency band before the receive channel switching, or the frequency band after the receive channel switching.

[0196] It is understood that the aforementioned first information, indicating that the first communication device supports receive channel switching on the first frequency band combination, can be an explicit or implicit indication. For example, the first information includes M bits, where one bit corresponds to one frequency band pair. When a bit among these M bits is set to 1, it indicates that receive channel switching is supported on the corresponding frequency band pair; when the bit is set to 0, it indicates that receive channel switching is not supported on the corresponding frequency band pair or that it is reserved. For example, when the first information carries the receive channel switching delay of a certain frequency band pair, it indicates that receive channel switching is supported on that frequency band pair.

[0197] For clarity, the following explanation will use a band pair from the first band combination as an example. This band pair can consist of the first band and the second band.

[0198] In one possible implementation, the aforementioned N frequency bands (i.e., the first frequency band combination) include a first frequency band and a second frequency band. The first frequency band can be an FDD band, and the second frequency band can be either an FDD band or an SDL band. The frequency ranges of both the first and second frequency bands can be below 1 GHz. For example, the first and second frequency bands can be a frequency band pair. Then, the aforementioned first information can be used to instruct the first communication device to support receive channel switching on the first and second frequency bands.

[0199] In one possible implementation, the first information further includes indication information A, which can be used to indicate that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band. Alternatively, the first information indicating that the first communication device supports reception channel switching on the first frequency band and the second frequency band can explicitly / implicitly indicate that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band.

[0200] S302, the second communication device (e.g., base station) sends second information to the first communication device (e.g., UE). The second information is used to configure a handover pattern. The handover pattern includes time-domain resources corresponding to the first frequency band and time-domain resources corresponding to the second frequency band. The time-domain resources corresponding to the first frequency band and the time-domain resources corresponding to the second frequency band do not overlap.

[0201] Accordingly, the first communication device receives the second information.

[0202] In one possible implementation, after receiving the first information, the second communication device can determine that the first communication device supports receiving channel switching on the first frequency band and the second frequency band, or in other words, it can determine that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band. The second communication device (e.g., a base station) can then send second information to the first communication device (e.g., a UE). This second information can be used to configure a handover pattern, which may include time-domain resources corresponding to the first frequency band and time-domain resources corresponding to the second frequency band. In this application embodiment, time-domain resources may refer to symbols, slots, sub-frames, or radio frames, etc. The time-domain resources corresponding to the first frequency band and the second frequency band do not overlap. In this application embodiment, "two time-domain resources do not overlap" can be understood as two time-domain resources not sharing any OFDM symbol. For example, in the time domain, the first communication device may finish receiving on the first frequency band and then start receiving on the second frequency band; or the first communication device may finish receiving on the second frequency band and then start receiving on the first frequency band; or the first communication device may finish transmitting on the first frequency band and then start receiving on the second frequency band; or the first communication device may finish transmitting on the second frequency band and then start receiving on the first frequency band. For instance, the first frequency band is an FDD band, and the second frequency band is an SDL band.

[0203] For example, the handover pattern described above can be semi-statically configured. For instance, the handover pattern can be a semi-static handover pattern configured based on radio resource control signaling. The handover pattern can be periodic. The semi-static configuration in this embodiment can be understood as the configuration remaining unchanged on the UE side when the network does not update the configuration. In other words, when the network does not update the handover pattern, the UE transmits (i.e., sends or receives) information according to the handover pattern configured by the second information.

[0204] In one possible implementation, after step S202, the second communication device (e.g., a base station) can further send third scheduling information and fourth scheduling information to the first communication device (e.g., a UE). The third scheduling information can be used to schedule the first communication device to send uplink information or receive downlink information on the first frequency band and the corresponding (partial / all) time-domain resources. The second scheduling information can be used to schedule the first communication device to send uplink information or receive downlink information on the second frequency band and the corresponding (partial / all) time-domain resources. The first communication device (e.g., the UE) can then send uplink information or receive downlink information on the corresponding time-frequency resources according to the third and fourth scheduling information.

[0205] The first communication device in this application embodiment reports to the second communication device that it supports receiving channel switching on the first frequency band and the second frequency band, so that the second communication device configures the time domain resources corresponding to the first frequency band and the second frequency band for the first communication device respectively, and the two time domain resources do not overlap. On the one hand, it can align the simultaneous receiving capability of the first communication device, improve the accuracy of network scheduling and the reliability of transmission; on the other hand, it can simplify the implementation of network scheduling.

[0206] It is understood that, in order to achieve the functions in the above embodiments, the first communication device and the second communication device include hardware structures and / or software modules corresponding to each function. Those skilled in the art should readily recognize that, based on the units and method steps of the various examples described in conjunction with the embodiments disclosed in this application, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0207] Figure 6 and Figure 7 This is a schematic diagram illustrating the structure of possible communication devices provided in embodiments of this application. These communication devices can be used to implement the functions of the first or second communication device in the above method embodiments, and therefore can also achieve the beneficial effects of the above method embodiments. In the embodiments of this application, the communication device can be as follows: Figure 1 The network device shown can also be as follows: Figure 1 The terminal device shown can also be a module (such as a chip) applied to network equipment or terminal equipment.

[0208] like Figure 6 As shown, the communication device 600 includes a processing module 610 and a transceiver module 620. The communication device 600 is used to implement the above-mentioned... Figure 3 or Figure 4 or Figure 5 The functions of the first or second communication device in the method embodiments shown.

[0209] When the communication device 600 is used to implement Figure 3 In the illustrated method embodiment, the first communication device functions as follows: a processing module 610 acquires first information; and a transceiver module 620 transmits the first information. The first information indicates whether the first communication device supports simultaneous transmission and reception on a first frequency band combination and / or whether it supports simultaneous reception on the same first frequency band combination. The first frequency band combination includes a first frequency band and a second frequency band, wherein the first frequency band is an FDD band, and the second frequency band is either an FDD band or an SDL band.

[0210] For example, the first information described above is used to indicate whether the first communication device supports simultaneous transmission and reception on the first frequency band combination and / or whether it supports simultaneous reception on the first frequency band combination, including: the first information is used to indicate one or more of the following:

[0211] Does the first communication device support simultaneous transmission on the first frequency band and reception on the second frequency band?

[0212] Does the first communication device support simultaneous reception on the first frequency band and transmission on the second frequency band?

[0213] Alternatively, whether the first communication device supports simultaneous reception on both the first and second frequency bands.

[0214] For example, the first information described above is also used to indicate one or more of the following: whether the first communication device supports simultaneous transmission on the first frequency band and the second frequency band and reception on the second frequency band; or whether the first communication device supports simultaneous transmission on the first frequency band and the second frequency band and reception on the first frequency band.

[0215] For example, the transceiver module 620 is also configured to send a second message, which is used to instruct the first communication device to support receiving channel switching on the first frequency band combination.

[0216] For example, the first information indicates that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band. The transceiver module 620 is also configured to receive third information, which is used to configure the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band, wherein the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band do not overlap.

[0217] For example, the third information mentioned above is semi-static configuration information.

[0218] For example, the frequency ranges of both the first frequency band and the second frequency band are below 1 GHz.

[0219] For example, the first information described above is used to indicate whether the first communication device supports simultaneous transmission and reception on the first frequency band combination and / or whether it supports simultaneous reception on the first frequency band combination, including:

[0220] The aforementioned first information indicates whether the first communication device supports simultaneous transmission and reception on one or more frequency band pairs in the first frequency band combination and / or whether it supports simultaneous reception on one or more frequency band pairs in the first frequency band combination. The first frequency band combination includes multiple frequency bands, and a frequency band pair includes two frequency bands in the first frequency band combination. The first frequency band and the second frequency band constitute a frequency band pair.

[0221] For example, the transceiver module 620 is further configured to receive first scheduling information and second scheduling information, the first scheduling information being used to indicate transmission or reception on a first frequency band, and the second scheduling information being used to indicate transmission or reception on a second frequency band.

[0222] For example, the transceiver module 620 is further configured to send a fourth message indicating a second frequency band combination supported by the first communication device; the first communication device supports simultaneous transmission and reception on the second frequency band combination.

[0223] When the communication device 600 is used to implement Figure 3 In the illustrated method embodiment, the second communication device functions as follows: a transceiver module 620 receives first information; and a processing module 610 processes the first information. The first information indicates whether the first communication device supports simultaneous transmission and reception on a first frequency band combination and / or whether it supports simultaneous reception on the first frequency band combination. The first frequency band combination includes a first frequency band and a second frequency band, wherein the first frequency band is an FDD band, and the second frequency band is either an FDD band or an SDL band.

[0224] For example, the first information described above is used to indicate whether the first communication device supports simultaneous transmission and reception on the first frequency band combination and / or whether it supports simultaneous reception on the first frequency band combination, including: the first information is used to indicate one or more of the following:

[0225] Does the first communication device support simultaneous transmission on the first frequency band and reception on the second frequency band?

[0226] Does the first communication device support simultaneous reception on the first frequency band and transmission on the second frequency band?

[0227] Alternatively, whether the first communication device supports simultaneous reception on both the first and second frequency bands.

[0228] For example, the first information described above is also used to indicate one or more of the following: whether the first communication device supports simultaneous transmission on the first frequency band and the second frequency band and reception on the second frequency band; or whether the first communication device supports simultaneous transmission on the first frequency band and the second frequency band and reception on the first frequency band.

[0229] For example, the transceiver module 620 is also configured to receive second information, which is used to instruct the first communication device to support receiving channel switching on the first frequency band combination.

[0230] For example, the first information indicates that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band. The processing module 610 is further configured to acquire third information, and the transceiver module 620 is further configured to send the third information, which is used to configure the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band, wherein the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band do not overlap.

[0231] For example, the third information mentioned above is semi-static configuration information.

[0232] For example, the frequency ranges of both the first frequency band and the second frequency band are below 1 GHz.

[0233] For example, the first information described above is used to indicate whether the first communication device supports simultaneous transmission and reception on the first frequency band combination and / or whether it supports simultaneous reception on the first frequency band combination, including:

[0234] The aforementioned first information indicates whether the first communication device supports simultaneous transmission and reception on one or more frequency band pairs in the first frequency band combination and / or whether it supports simultaneous reception on one or more frequency band pairs in the first frequency band combination. The first frequency band combination includes multiple frequency bands, and a frequency band pair includes two frequency bands in the first frequency band combination. The first frequency band and the second frequency band constitute a frequency band pair.

[0235] For example, the transceiver module 620 is further configured to send first scheduling information and second scheduling information, the first scheduling information being used to indicate transmission or reception on a first frequency band, and the second scheduling information being used to indicate transmission or reception on a second frequency band, the first scheduling information and the second scheduling information being determined based on the aforementioned first information.

[0236] For example, the transceiver module 620 is further configured to receive fourth information, which indicates a second frequency band combination supported by the first communication device; the processing module 610 is further configured to determine, based on the fourth information, that the first communication device supports simultaneous transmission and reception on the second frequency band combination.

[0237] For a more detailed description of the aforementioned processing module 610 and transceiver module 620, please refer to [link / reference]. Figure 3 The relevant descriptions in the method embodiments shown.

[0238] When the communication device 600 is used to implement Figure 4 In the illustrated method embodiment, the first communication device functions as follows: processing module 610 acquires first information; transceiver module 620 transmits the first information. The first information indicates that the first communication device does not support simultaneous transmission and reception and / or simultaneous reception on a first frequency band combination. The first frequency band combination includes a first frequency band and a second frequency band, where the first frequency band is an FDD band and the second frequency band is either an FDD band or an SDL band.

[0239] For example, the first information described above is used to indicate that the first communication device does not support simultaneous transmission and / or reception on the first frequency band combination, including: the first information is used to indicate one or more of the following:

[0240] The first communication device does not support simultaneous transmission on the first frequency band and reception on the second frequency band;

[0241] The first communication device does not support simultaneous reception on the first frequency band and transmission on the second frequency band;

[0242] Alternatively, the first communication device does not support simultaneous reception on the first frequency band and the second frequency band.

[0243] For example, the first information described above is also used to indicate one or more of the following: the first communication device does not support simultaneous transmission on the first frequency band and the second frequency band and reception on the second frequency band; or, the first communication device does not support simultaneous transmission on the first frequency band and the second frequency band and reception on the first frequency band.

[0244] For example, the first information indicates that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band. The transceiver module 620 is also configured to receive third information, which is used to configure the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band, wherein the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band do not overlap.

[0245] For example, the third information mentioned above is semi-static configuration information.

[0246] For example, the frequency ranges of both the first frequency band and the second frequency band are below 1 GHz.

[0247] For example, the first information described above is used to indicate that the first communication device does not support simultaneous transmission and / or reception on the first frequency band combination, including:

[0248] The aforementioned first information indicates that the first communication device does not support simultaneous transmission and / or reception on one or more frequency band pairs in the first frequency band combination, the first frequency band combination including multiple frequency bands, a frequency band pair including two frequency bands in the first frequency band combination, and the first frequency band and the second frequency band forming a frequency band pair.

[0249] For example, the transceiver module 620 is further configured to receive first scheduling information and second scheduling information, the first scheduling information being used to indicate transmission or reception on a first frequency band, and the second scheduling information being used to indicate transmission or reception on a second frequency band.

[0250] When the communication device 600 is used to implement Figure 4In the illustrated method embodiment, the second communication device functions as follows: a transceiver module 620 receives first information; and a processing module 610 processes the first information. The first information indicates that the first communication device does not support simultaneous transmission and reception and / or simultaneous reception on a first frequency band combination. The first frequency band combination includes a first frequency band and a second frequency band, where the first frequency band is an FDD band and the second frequency band is either an FDD band or an SDL band.

[0251] For example, the first information described above is used to indicate that the first communication device does not support simultaneous transmission and / or reception on the first frequency band combination, including: the first information is used to indicate one or more of the following:

[0252] The first communication device does not support simultaneous transmission on the first frequency band and reception on the second frequency band;

[0253] The first communication device does not support simultaneous reception on the first frequency band and transmission on the second frequency band;

[0254] Alternatively, the first communication device does not support simultaneous reception on the first frequency band and the second frequency band.

[0255] For example, the first information described above is also used to indicate one or more of the following: the first communication device does not support simultaneous transmission on the first frequency band and the second frequency band and reception on the second frequency band; or, the first communication device does not support simultaneous transmission on the first frequency band and the second frequency band and reception on the first frequency band.

[0256] For example, the first information indicates that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band. The processing module 610 is further configured to acquire third information; the transceiver module 620 is further configured to transmit the third information, which is used to configure the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band, wherein the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band do not overlap.

[0257] For example, the third information mentioned above is semi-static configuration information.

[0258] For example, the frequency ranges of both the first frequency band and the second frequency band are below 1 GHz.

[0259] For example, the first information described above is used to indicate that the first communication device does not support simultaneous transmission and / or reception on the first frequency band combination, including:

[0260] The aforementioned first information indicates that the first communication device does not support simultaneous transmission and / or reception on one or more frequency band pairs in the first frequency band combination, the first frequency band combination including multiple frequency bands, a frequency band pair including two frequency bands in the first frequency band combination, and the first frequency band and the second frequency band forming a frequency band pair.

[0261] For example, the transceiver module 620 is further configured to send first scheduling information and second scheduling information, the first scheduling information being used to indicate transmission or reception on a first frequency band, and the second scheduling information being used to indicate transmission or reception on a second frequency band, the first scheduling information and the second scheduling information being determined based on the aforementioned first information.

[0262] For a more detailed description of the aforementioned processing module 610 and transceiver module 620, please refer to [link / reference]. Figure 4 The relevant descriptions in the method embodiments shown.

[0263] When the communication device 600 is used to implement Figure 5 In the method embodiment shown, the first communication device functions as follows: the processing module 610 is used to acquire first information; the transceiver module 620 is used to send the first information, which is used to instruct the first communication device to support receiving channel switching on a first frequency band combination; the first frequency band combination includes a first frequency band and a second frequency band, the first frequency band being an FDD frequency band and the second frequency band being an FDD frequency band or an SDL frequency band; the transceiver module 620 is also used to receive second information, which is used to configure a switching pattern, the switching pattern including time domain resources corresponding to the first frequency band and time domain resources corresponding to the second frequency band, the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band do not overlap.

[0264] When the communication device 600 is used to implement Figure 5 In the method embodiment shown, the first communication device functions as follows: the transceiver module 620 receives first information, which instructs the first communication device to support receiving channel switching on a first frequency band combination; the first frequency band combination includes a first frequency band and a second frequency band, the first frequency band being an FDD band and the second frequency band being either an FDD band or an SDL band; the processing module 610 acquires second information; the transceiver module 620 also transmits the second information, which configures a switching pattern, the switching pattern including time-domain resources corresponding to the first frequency band and time-domain resources corresponding to the second frequency band, wherein the time-domain resources corresponding to the first frequency band and the time-domain resources corresponding to the second frequency band do not overlap.

[0265] For example, the switching pattern described above is semi-statically configured.

[0266] For example, the first information mentioned above includes indication information, which is used to indicate that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band.

[0267] For example, the first information mentioned above also includes the switching delay.

[0268] For example, the frequency ranges of both the first frequency band and the second frequency band are below 1 GHz.

[0269] For a more detailed description of the aforementioned processing module 610 and transceiver module 620, please refer to [link / reference]. Figure 5 The relevant descriptions in the method embodiments shown.

[0270] like Figure 7 As shown, the communication device 700 includes a processor 710 and an interface circuit 720. The processor 710 and the interface circuit 720 are coupled to each other. It is understood that the interface circuit 720 can be a transceiver or an input / output interface. Optionally, the communication device 700 may also include a memory 730 for storing instructions executed by the processor 710, or storing input data required for the processor 710 to execute instructions, or storing data generated after the processor 710 executes instructions. Sometimes, the interface circuit 720 can also be understood as part of the processor 710, in which case the communication device 700 includes the processor 710.

[0271] When the communication device 700 is used to implement Figure 3 or Figure 4 or Figure 5 In the method shown, the processor 710 is used to implement the functions of the processing module 610, and the interface circuit 720 is used to implement the functions of the transceiver module 620.

[0272] When the aforementioned communication device is a chip applied to the first communication device, the chip implements the functions of the first communication device in any of the above method embodiments. The chip receiving information from the second communication device can be understood as the information being first received by other modules (such as an RF module or antenna) in the first communication device, and then sent to the chip by these modules. The chip sending information to the second communication device can be understood as the information being first sent to other modules (such as an RF module or antenna) in the first communication device, and then sent to the second communication device by these modules.

[0273] When the aforementioned communication device is a chip applied to the second communication device, the chip implements the functions of the second communication device in any of the above method embodiments. The chip receives information from the first communication device, which can be understood as the information being first received by other modules (such as an RF module or antenna) in the second communication device, and then sent to the chip by these modules. The chip sends information to the first communication device, which can be understood as the information being sent to other modules (such as an RF module or antenna) in the second communication device, and then sent to the first communication device by these modules.

[0274] In one possible implementation, the processor 710 may include a transceiver for implementing receiving and transmitting functions. This transceiver may provide a communication interface or means for communicating with various other devices / apps via a wireless transmission medium. The transceiver may be coupled to an antenna array, and the transceiver and antenna array may work together to communicate with the appropriate network type.

[0275] In one possible implementation, the processor 710 may store instructions, which may be a computer program. The computer program, running on the processor 710, causes the communication device to perform the methods described in the above method embodiments. The computer program may be embedded in the processor 710; in this case, the processor 710 may be implemented in hardware.

[0276] In one implementation, the communication device may include a circuit that can perform the functions of transmitting, receiving, or communicating in the aforementioned method embodiments. The processor and transceiver described in this application can be implemented on integrated circuits (ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application-specific integrated circuits (ASICs), printed circuit boards (PCBs), electronic devices, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal-oxide semiconductors (CMOS), n-metal-oxide-semiconductor (NMOS), positive-channel metal-oxide semiconductors (PMOS), bipolar junction transistors (BJTs), bipolar CMOS (BiCMOS), silicon-germanium (SiGe), gallium arsenide (GaAs), etc.

[0277] This application also provides a communication system, which includes a first communication device and a second communication device, which can be used to execute the methods in any of the foregoing method embodiments.

[0278] In addition, this application also provides a computer program for implementing the operations and / or processes performed by the first communication device or the second communication device in the method provided in this application.

[0279] This application also provides a readable storage medium storing computer code that, when executed on a computer, causes the computer to perform the operations and / or processes performed by the first or second communication device in the method provided in this application.

[0280] This application also provides a computer program product, which includes a computer program or instructions that, when run on a computer, cause the operations and / or processes performed by the first communication device or the second communication device in the method provided in this application to be executed.

[0281] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and modules described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

[0282] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0283] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0284] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0285] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to existing solutions, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, external hard drives, ROM, RAM, magnetic disks, or optical disks.

[0286] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method applied to a first communication device, characterized in that, include: Send a first message, the first message being used to indicate whether the first communication device supports simultaneous transmission and reception on a first frequency band combination and / or whether it supports simultaneous reception on the first frequency band combination; the first frequency band combination includes a first frequency band and a second frequency band, the first frequency band being a frequency division duplex (FDD) frequency band, and the second frequency band being an FDD frequency band or a supplementary downlink (SDL) frequency band.

2. The method according to claim 1, characterized in that, The first information is used to indicate whether the first communication device supports simultaneous transmission and reception on the first frequency band combination and / or whether it supports simultaneous reception on the first frequency band combination, including: The first information is used to indicate one or more of the following: Does the first communication device support simultaneous transmission on the first frequency band and reception on the second frequency band? Does the first communication device support simultaneous reception on the first frequency band and transmission on the second frequency band? Alternatively, whether the first communication device supports simultaneous reception on the first frequency band and the second frequency band.

3. The method according to claim 2, characterized in that, The first information is also used to indicate one or more of the following: Does the first communication device support simultaneous transmission on the first frequency band and the second frequency band, as well as reception on the second frequency band? Alternatively, does the first communication device support simultaneous transmission on the first frequency band and the second frequency band, as well as reception on the first frequency band? 4. The method according to claim 1, characterized in that, The method further includes: Send a second message, which is used to instruct the first communication device to support receiving channel switching on the first frequency band combination.

5. The method according to any one of claims 1 to 4, characterized in that, The first information indicates that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band; The method further includes: Receive third information, which is used to configure the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band, wherein the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band do not overlap.

6. The method according to claim 5, characterized in that, The third piece of information is semi-static configuration information.

7. The method according to any one of claims 1 to 6, characterized in that, The frequency ranges of both the first and second frequency bands are below 1 GHz.

8. The method according to any one of claims 1 to 7, characterized in that, The first information is used to indicate whether the first communication device supports simultaneous transmission and reception on the first frequency band combination and / or whether it supports simultaneous reception on the first frequency band combination, including: The first information indicates whether the first communication device supports simultaneous transmission and reception on one or more frequency band pairs in the first frequency band combination and / or whether it supports simultaneous reception on one or more frequency band pairs in the first frequency band combination. The first frequency band combination includes multiple frequency bands, and a frequency band pair includes two frequency bands in the first frequency band combination. The first frequency band and the second frequency band are a frequency band pair.

9. The method according to any one of claims 1 to 8, characterized in that, The method further includes: Receive first scheduling information and second scheduling information, wherein the first scheduling information is used to indicate transmission or reception on the first frequency band, and the second scheduling information is used to indicate transmission or reception on the second frequency band.

10. The method according to any one of claims 1 to 9, characterized in that, The method further includes: Send a fourth message, the fourth message being used to indicate a second frequency band combination supported by the first communication device; The first communication device supports simultaneous transmission and reception on the second frequency band combination.

11. A communication method applied to a second communication device, characterized in that, include: The device receives first information, which indicates whether the first communication device supports simultaneous transmission and reception on a first frequency band combination and / or whether it supports simultaneous reception on the first frequency band combination. The first frequency band combination includes a first frequency band and a second frequency band, wherein the first frequency band is a frequency division duplex (FDD) frequency band and the second frequency band is an FDD frequency band or a supplementary downlink (SDL) frequency band.

12. The method according to claim 11, characterized in that, The first information is used to indicate whether the first communication device supports simultaneous transmission and reception on the first frequency band combination and / or whether it supports simultaneous reception on the first frequency band combination, including: The first information is used to indicate one or more of the following: Does the first communication device support simultaneous transmission on the first frequency band and reception on the second frequency band? Does the first communication device support simultaneous reception on the first frequency band and transmission on the second frequency band? Alternatively, whether the first communication device supports simultaneous reception on the first frequency band and the second frequency band.

13. The method according to claim 12, characterized in that, The first information is also used to indicate one or more of the following: Does the first communication device support simultaneous transmission on the first frequency band and the second frequency band, as well as reception on the second frequency band? Alternatively, does the first communication device support simultaneous transmission on the first frequency band and the second frequency band, as well as reception on the first frequency band? 14. The method according to claim 11, characterized in that, The method further includes: Receive second information, which is used to instruct the first communication device to support receive channel switching on the first frequency band combination.

15. The method according to any one of claims 11 to 14, characterized in that, The first information indicates that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band; The method further includes: Send a third message, which is used to configure the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band, wherein the time domain resources corresponding to the first frequency band and the time domain resources corresponding to the second frequency band do not overlap.

16. The method according to claim 15, characterized in that, The third piece of information is semi-static configuration information.

17. The method according to any one of claims 11 to 16, characterized in that, The frequency ranges of both the first and second frequency bands are below 1 GHz.

18. The method according to any one of claims 11 to 17, characterized in that, The first information is used to indicate whether the first communication device supports simultaneous transmission and reception on the first frequency band combination and / or whether it supports simultaneous reception on the first frequency band combination, including: The first information indicates whether the first communication device supports simultaneous transmission and reception on one or more frequency band pairs in the first frequency band combination and / or whether it supports simultaneous reception on one or more frequency band pairs in the first frequency band combination. The first frequency band combination includes multiple frequency bands, and a frequency band pair includes two frequency bands in the first frequency band combination. The first frequency band and the second frequency band are a frequency band pair.

19. The method according to any one of claims 11 to 18, characterized in that, The method further includes: Send first scheduling information and second scheduling information, wherein the first scheduling information is used to indicate transmission or reception on the first frequency band, and the second scheduling information is used to indicate transmission or reception on the second frequency band, and the first scheduling information and the second scheduling information are determined based on the first information.

20. The method according to any one of claims 11 to 19, characterized in that, The method further includes: Receive fourth information, the fourth information being used to indicate a second frequency band combination supported by the first communication device; Based on the fourth information, it is determined that the first communication device supports simultaneous transmission and reception on the second frequency band combination.

21. A communication method applied to a first communication device, characterized in that, include: Send a first message, the first message being used to instruct the first communication device to support receiving channel switching on a first frequency band combination; the first frequency band combination includes a first frequency band and a second frequency band, the first frequency band being a frequency division duplex (FDD) frequency band, and the second frequency band being an FDD frequency band or a supplementary downlink (SDL) frequency band; The system receives second information, which is used to configure a switching pattern. The switching pattern includes time-domain resources corresponding to the first frequency band and time-domain resources corresponding to the second frequency band. The time-domain resources corresponding to the first frequency band and the time-domain resources corresponding to the second frequency band do not overlap.

22. A communication method applied to a second communication device, characterized in that, include: Receive first information, the first information being used to instruct the first communication device to support receive channel switching on a first frequency band combination; the first frequency band combination includes a first frequency band and a second frequency band, the first frequency band being a frequency division duplex (FDD) frequency band, and the second frequency band being an FDD frequency band or a supplementary downlink (SDL) frequency band; Send a second message, which is used to configure a switching pattern. The switching pattern includes time-domain resources corresponding to the first frequency band and time-domain resources corresponding to the second frequency band. The time-domain resources corresponding to the first frequency band and the time-domain resources corresponding to the second frequency band do not overlap.

23. The method according to claim 21 or 22, characterized in that, The switching pattern is semi-statically configured.

24. The method according to any one of claims 21 to 23, characterized in that, The first information includes indication information, which indicates that the first communication device does not support simultaneous reception on the first frequency band and the second frequency band.

25. The method according to any one of claims 21 to 24, characterized in that, The first information also includes the switching delay.

26. The method according to any one of claims 21 to 25, characterized in that, The frequency ranges of both the first and second frequency bands are below 1 GHz.

27. A communication device, characterized in that, It includes a module for performing the method as described in any one of claims 1 to 10, or includes a module for performing the method as described in any one of claims 11 to 20, or includes a module for performing the method as described in any one of claims 21 to 26.

28. A communication device, characterized in that, The device includes a processor and an interface circuit, wherein the interface circuit is used to receive information from other communication devices and transmit it to the processor or to send information from the processor to other communication devices, and the processor enables the communication devices to implement the method as described in any one of claims 1 to 26 through the interface circuit or by executing code instructions.

29. A readable storage medium, characterized in that, The readable storage medium stores a computer program or instructions that, when executed by a communication device, implement the method as described in any one of claims 1 to 26.

30. A computer program product, comprising a computer program or instructions, characterized in that, When the computer program or instructions are executed by the communication device, the method as described in any one of claims 1 to 26 is implemented.

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