Information indication method and apparatus, device, and storage medium

Abstract

An information indication method and apparatus, a device, and a storage medium, relating to the technical field of communications. The method comprises: a terminal device sending first information to a network device, the first information being used for assisting the network device in determining, among a plurality of band combinations supported by the terminal device, a target band combination to be configured for the terminal device (710). Using the terminal device to send the first information to the network device enables the network device to learn the band combination that is preferred by the terminal device or has a high priority, and assists the network device in determining, among the plurality of band combinations supported by the terminal device, the target band combination to be configured for the terminal device, thereby helping to improve the accuracy and effectiveness of band combination configuration.

Description

Information indication method, device, equipment and storage medium Technical Field

[0001] The embodiments of the present application relate to the field of communication technology, and in particular to an information indication method, apparatus, device, and storage medium. Background Art

[0002] Multi-carrier is an important means for terminal devices or networks to improve communication transmission rates. For example, in CA (Carrier Aggregation) or DC (Dual Connectivity), the base station can configure multiple CCs (Component Carriers) for the terminal device to expand the transmission bandwidth and improve the transmission rate.

[0003] During this process, the frequency band combinations supported by the terminal device are indicated by the terminal's capabilities. In the current terminal capability indication, the terminal device reports the frequency band combinations it supports to the base station. Upon receiving the frequency band combinations, the base station configures the corresponding carrier for subsequent transmission based on the actual user situation and resource availability in the network.

[0004] However, the above method can only ensure that the frequency band combination configured for the terminal device is a frequency band combination supported by the terminal device, but cannot guarantee the accuracy and effectiveness of the frequency band combination configured for the terminal device.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide an information indication method, apparatus, device, and storage medium. The technical solution is as follows:

[0007] According to one aspect of an embodiment of the present application, a method for indicating information is provided, the method being executed by a terminal device, the method comprising:

[0008] First information is sent to a network device, where the first information is used to assist the network device in determining a target frequency band combination configured for the terminal device from a plurality of frequency band combinations supported by the terminal device.

[0009] According to one aspect of an embodiment of the present application, there is provided an information indication method, the method being performed by a network device, the method comprising:

[0010] Receive first information sent by a terminal device, where the first information is used to assist the network device in determining a target frequency band combination configured for the terminal device from a plurality of frequency band combinations supported by the terminal device.

[0011] According to one aspect of an embodiment of the present application, there is provided an information indication device, the device comprising:

[0012] A sending module is used to send first information to a network device, where the first information is used to assist the network device in determining a target frequency band combination configured for the terminal device from a plurality of frequency band combinations supported by the terminal device.

[0013] According to one aspect of an embodiment of the present application, there is provided an information indication device, the device comprising:

[0014] The receiving module is used to receive first information sent by the terminal device, where the first information is used to assist the network device in determining a target frequency band combination configured for the terminal device from multiple frequency band combinations supported by the terminal device.

[0015] According to one aspect of an embodiment of the present application, a communication device is provided, which includes a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program to implement the above-mentioned information indication method on the terminal device side, or implements the above-mentioned information indication method on the network device side.

[0016] According to one aspect of an embodiment of the present application, a computer-readable storage medium is provided, in which a computer program is stored. The computer program is used to be executed by a processor to implement the above-mentioned information indication method on the terminal device side, or to implement the above-mentioned information indication method on the network device side.

[0017] According to one aspect of an embodiment of the present application, a chip is provided, which includes a programmable logic circuit and / or program instructions. When the chip is running, it is used to implement the above-mentioned information indication method on the terminal device side, or to implement the above-mentioned information indication method on the network device side.

[0018] According to one aspect of an embodiment of the present application, a computer program product is provided, which includes a computer program, and the computer program is stored in a computer-readable storage medium. A processor reads and executes the computer program from the computer-readable storage medium to implement the above-mentioned information indication method on the terminal device side, or to implement the above-mentioned information indication method on the network device side.

[0019] The technical solutions provided by the embodiments of the present application may have the following beneficial effects:

[0020] The first information is sent to the network device through the terminal device so that the network device can learn the frequency band combination that the terminal device prefers or has a high priority, and assist the network device in determining the target frequency band combination configured for the terminal device from multiple frequency band combinations supported by the terminal device, thereby helping to improve the accuracy and effectiveness of the frequency band combination configuration. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] FIG1 is a schematic diagram of a network architecture provided by an embodiment of the present application;

[0022] FIG2 is a schematic diagram of multi-carrier transmission provided by an embodiment of the present application;

[0023] FIG3 is a schematic diagram of low-frequency and high-frequency coverage provided by an embodiment of the present application;

[0024] FIG4 is a schematic diagram of switching transmission provided by an embodiment of the present application;

[0025] FIG5 is a schematic diagram of switching transmission provided by another embodiment of the present application;

[0026] FIG6 is a schematic diagram of uplink switching transmission carrier configuration and activation provided by one embodiment of the present application;

[0027] FIG7 is a flowchart of an information indication method provided by an example of the present application;

[0028] FIG8 is a schematic diagram of carrier switching transmission provided by one embodiment of the present application;

[0029] FIG9 is a schematic diagram of terminal antenna distribution and shielding effects provided by an embodiment of the present application;

[0030] FIG10 is a block diagram of an information indication device provided by one embodiment of the present application;

[0031] FIG11 is a block diagram of an information indication device provided by another embodiment of the present application;

[0032] FIG12 is a schematic structural diagram of a terminal device provided by an embodiment of the present application;

[0033] FIG13 is a schematic diagram of the structure of a network device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0034] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0035] The network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided by the embodiments of the present application. A person skilled in the art will appreciate that, with the evolution of the network architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of the present application are equally applicable to similar technical problems.

[0036] Please refer to FIG1 , which shows a schematic diagram of a network architecture 100 provided by an embodiment of the present application. The network architecture 100 may include: a terminal device 10 , an access network device 20 , and a core network element 30 .

[0037] The terminal device 10 may refer to a UE (User Equipment), an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a wireless communication device, a user agent, or a user apparatus. In some embodiments, the terminal device 10 may also be a cellular phone, a cordless phone, a SIP (Session Initiation Protocol) phone, a WLL (Wireless Local Loop) station, a PDA (Personal Digital Assistant), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5GS (5th Generation System) or a terminal device in a future evolved PLMN (Public Land Mobile Network), etc., and the embodiments of the present application are not limited thereto. For ease of description, the above-mentioned devices are collectively referred to as terminal devices. The number of terminal devices 10 is generally multiple, and one or more terminal devices 10 may be distributed in a cell managed by each access network device 20. The terminal device may also be referred to as a terminal or UE for short, and those skilled in the art will understand its meaning.

[0038] Access network equipment 20 is a device deployed in an access network to provide wireless communication capabilities for terminal devices 10. Access network equipment 20 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems employing different wireless access technologies, the names of devices that provide access network equipment functions may vary. For example, in 5G NR systems, they are referred to as gNodeBs or gNBs. As communication technologies evolve, the term "access network equipment" may change. For ease of description, in the embodiments of this application, the aforementioned devices that provide wireless communication capabilities for terminal devices 10 are collectively referred to as access network equipment. In some embodiments, access network equipment 20 enables communication between terminal devices 10 and core network elements 30. For example, in an LTE (Long Term Evolution) system, access network equipment 20 may be an Evolved Universal Terrestrial Radio Access Network (EUTRAN) or one or more eNodeBs within EUTRAN. In a 5G NR system, access network equipment 20 may be a Radio Access Network (RAN) or one or more gNBs within the RAN. In the embodiment of the present application, unless otherwise specified, the "network device" refers to the access network device 20, such as a base station.

[0039] The core network element 30 is a network element deployed in the core network. The functions of the core network element 30 are mainly to provide user connection, user management, and service bearer, and to provide an interface to the external network as a bearer network. For example, the core network elements in the 5G NR system may include network elements such as the AMF (Access and Mobility Management Function) entity, the UPF (User Plane Function) entity, and the SMF (Session Management Function) entity.

[0040] In some embodiments, the access network device 20 and the core network element 30 communicate with each other via an air interface technology, such as the NG interface in the 5G NR system. The access network device 20 and the terminal device 10 communicate with each other via an air interface technology, such as the Uu interface.

[0041] The "5G NR system" in the embodiments of the present application may also be referred to as a 5G system or an NR system, but those skilled in the art will understand its meaning. The technical solutions described in the embodiments of the present application may be applicable to LTE systems, 5G NR systems, and subsequent evolution systems of 5G NR systems (e.g., B5G (Beyond 5G) systems, 6G systems (6th Generation System, sixth generation mobile communication systems)), and other communication systems such as NB-IoT (Narrow Band Internet of Things) systems, which are not limited in this application.

[0042] In an embodiment of the present application, the network device can provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) on the carrier used by the cell. The cell can be a cell corresponding to the network device (for example, a base station). The cell can belong to a macro base station or a base station corresponding to a small cell. The small cells here may include: metro cell, micro cell, pico cell, femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.

[0043] Before introducing the technical solutions of this application, we first introduce and explain some of the relevant technical knowledge involved in this application. The following related technologies can be combined with the technical solutions of the embodiments of this application as optional solutions, and they all fall within the scope of protection of the embodiments of this application. The embodiments of this application include at least part of the following contents.

[0044] 1. Multi-carrier configuration

[0045] Multi-carrier is an important means for terminal devices or networks to improve communication transmission rates. For example, in CA (Carrier Aggregation) or DC (Dual Connectivity), the base station can configure multiple CCs (Component Carriers) for the terminal device to expand the transmission bandwidth and increase the transmission rate. As shown in Figure 2, the base station configures an uplink carrier (CC1) and multiple downlink carriers (CC1, CC2, CC3, and CC4) for the terminal device based on the frequency band combination supported by the terminal device. The terminal device performs uplink and downlink transmissions based on the carriers configured by the base station.

[0046] During this process, the frequency band combinations supported by the terminal device are indicated by the terminal's capabilities. In the current terminal capability indication, the terminal device reports the frequency band combinations it supports to the base station. Upon receiving the frequency band combinations, the base station configures the corresponding carrier for subsequent transmission based on the actual user situation and resource availability in the network.

[0047] 2. Inter-carrier switching transmission

[0048] At the same transmit power, as shown in Figure 3, low-frequency bands typically have wider cell coverage due to lower spatial propagation loss. In contrast, high-frequency bands, due to higher spatial propagation loss, have smaller coverage at the same transmit power, but offer greater bandwidth and capacity, and typically support uplink MIMO (Multiple-Input Multiple-Output).

[0049] Therefore, to fully leverage the wide coverage advantages of the low-frequency band and the high capacity advantages of the high-frequency band, one approach is to combine the two bands. However, the hardware of the terminal device typically only supports two concurrent links. This means that if the low-frequency band occupies one transmit link, the high-frequency band can only use the other transmit link. This approach hinders the effective utilization of the low-frequency + high-frequency band combination. Therefore, uplink switching transmission is an effective implementation method. This allows switching between the low-frequency band and the high-frequency band. For example, as shown in Figure 4, transmission occurs on the low-frequency band (Band A) at time 1 and on the high-frequency band (Band B) at time 2. Alternatively, as shown in Figure 5, at time 1, a single transmission occurs on the low-frequency band (Band A) and a single transmission occurs on the high-frequency band (Band B), and at time 2, dual transmission occurs on the high-frequency band (Band B). This approach fully utilizes the wide coverage of the low-frequency band and the MIMO capabilities and large bandwidth of the high-frequency band.

[0050] Based on the aforementioned inter-carrier switching transmission method, a base station can typically configure multiple carriers for a terminal device simultaneously, then dynamically switch carriers for transmission based on user activity and resource availability in the network. As shown in Figure 6, the base station configures four uplink carriers (CC1, CC2, CC3, and CC4) for the terminal device, but only activates two uplink carriers at a time (e.g., CC1 and CC2). The base station determines which carrier to activate based on user activity and resource availability.

[0051] As can be seen above, whether a base station configures multiple uplink and downlink carriers for a terminal device or selectively activates a few of these configured carriers, the process is entirely determined by the base station. The only information the base station can rely on is the frequency band combination capability information reported by the terminal device. This frequency band combination capability information is reported statically and is typically determined by the frequency band combinations supported by the terminal hardware. Although the multiple carriers configured by the base station are functional in this configuration (i.e., supported by the terminal device), this may not be the optimal carrier configuration in some cases. This is because the optimal transmission of a terminal device on a particular carrier can sometimes be affected by the terminal device's own status, such as whether the antenna is obstructed by a person, resulting in degraded antenna performance. These factors are not currently reflected in terminal capabilities, resulting in suboptimal multi-carrier configurations in some cases. Terminal devices need a way to inform the base station of their current optimal configuration or activated carriers to optimize the multi-carrier configuration mechanism.

[0052] Please refer to Figure 7, which shows a flow chart of an information indication method provided by an embodiment of the present application. The method can be applied in the network architecture shown in Figure 1. The method includes the following step 710.

[0053] Step 710: The terminal device sends first information to the network device.

[0054] Correspondingly, the network device receives the first information sent by the terminal device.

[0055] In some embodiments, the first information is used to assist the network device in determining a target frequency band combination configured for the terminal device from a plurality of frequency band combinations supported by the terminal device. The terminal device may support multiple frequency band combinations, for example, the terminal device may support two or more frequency band combinations. The network device has learned the multiple frequency band combinations supported by the terminal device, for example, the network device learns the multiple frequency band combinations supported by the terminal device through the terminal capability indication information described above. In an embodiment of the present application, the terminal device sends the first information to the network device, and the network device can determine the target frequency band combination configured for the terminal device from a plurality of frequency band combinations supported by the terminal device based on the first information. The target frequency band combination refers to the frequency band combination actually configured or activated by the network device for the terminal device. The number of target frequency band combinations may be one. Of course, the present application does not limit the number of target frequency band combinations to multiple. For example, the terminal device supports frequency band combination 1, frequency band combination 2, and frequency band combination 3. When determining which frequency band combination to configure or activate from the three frequency band combinations described above, the network device does not solely determine based on the user situation and resource situation in the network, but may also determine which frequency band combination to configure or activate in conjunction with the first information described above. For example, if the network device determines to configure or activate frequency band combination 2 based on the first information described above, frequency band combination 2 is the target frequency band combination determined by the network device from among the multiple frequency band combinations supported by the terminal device and configured for the terminal device.

[0056] In some embodiments, a band combination refers to a combination of two or more frequency bands (or a single frequency band). For example, a band combination may include a combination of frequency bands A and B. For example, a band combination may include a combination of frequency bands A, B, and C. Of course, in some special cases, a band combination may include only one frequency band. For example, a band combination may include only frequency band A.

[0057] In some embodiments, the network device can be a network device in a TN (Terrestrial Network) (such as a cellular network), such as an access network device or a base station; it can also be a network device in an NTN (Non-Terrestrial Network), such as a satellite.

[0058] In some embodiments, the first information is used to determine the priority order of multiple frequency band combinations. Exemplarily, the network device may determine the priority order of multiple frequency band combinations supported by the terminal device based on the first information. The priority order may be an order of priority from high to low, or an order of priority from low to high, which is not limited in this application. In some embodiments, the network device determines the target frequency band combination configured for the terminal device from the above-mentioned multiple frequency band combinations based on the priority order of the multiple frequency band combinations supported by the terminal device. Exemplarily, the network device may determine the frequency band combination with the highest priority as the target frequency band combination configured for the terminal device based on the priority order.

[0059] In some embodiments, the first information includes priority information of at least one frequency band combination included in the multiple frequency band combinations. The priority information of the at least one frequency band combination is used to determine the priority of each of the at least one frequency band combinations, or to determine the priority order of the at least one frequency band combination, or to determine the priority order of the multiple frequency band combinations supported by the terminal device. The first information may include priority information of all frequency band combinations among the multiple frequency band combinations supported by the terminal device, or may only include priority information of some frequency band combinations among the multiple frequency band combinations supported by the terminal device. Exemplarily, the terminal device supports the following three frequency band combinations: band combination 1, band combination 2, and band combination 3. The first information may include priority information of all frequency band combinations among the multiple frequency band combinations supported by the terminal device, that is, priority information of band combination 1, band combination 2, and band combination 3. The first information may also include priority information of some frequency band combinations among the multiple frequency band combinations supported by the terminal device, such as priority information of only band combination 1 and band combination 3.

[0060] In some embodiments, the priority information of the at least one frequency band combination includes: a priority value for each of the at least one frequency band combinations. A priority value is a numerical representation of a priority, with different priority values ​​corresponding to different priorities. For example, a smaller priority value indicates a higher priority; conversely, a larger priority value indicates a lower priority. Alternatively, a larger priority value indicates a higher priority; conversely, a smaller priority value indicates a lower priority. Based on this, the network device can determine the priority of each of the at least one frequency band combinations based on the priority information of the at least one frequency band combination. Furthermore, based on the priorities of each of the at least one frequency band combinations, the priority order of the at least one frequency band combination, or the priority order of the multiple frequency band combinations supported by the terminal device, can be determined. For example, when the first information includes the priority values ​​of frequency band combination 1, frequency band combination 2, and frequency band combination 3, the network device can determine the priority order of frequency band combination 1, frequency band combination 2, and frequency band combination 3 based on the first information. For example, when the first information includes the priority values ​​of the frequency band combination 1 and the frequency band combination 3, the network device can determine the priority order of the frequency band combination 1 and the frequency band combination 3 according to the first information.

[0061] In some embodiments, the priority information of the at least one frequency band combination includes identification information of the at least one frequency band combination, and the identification information of the at least one frequency band combination is arranged in priority order. The identification information of the frequency band combination is used to distinguish different frequency band combinations, and different frequency band combinations have different identification information, such as an ID (identifier). The priority order can be from high to low priority or from low to high priority. The priority order can be indicated in the first information or specified by a protocol, which is not limited in this application. Based on this, the network device can determine the priority order of the at least one frequency band combination, or the priority order of the multiple frequency band combinations supported by the terminal device, based on the order of the identification information of the at least one frequency band combination. For example, if the first information includes the identification information of frequency band combination 2, the identification information of frequency band combination 1, and the identification information of frequency band combination 3, and the identification information is arranged in order from high to low priority, the network device can determine from the first information that the three frequency band combinations are, in descending order of priority, frequency band combination 2, frequency band combination 1, and frequency band combination 3. For example, the first information includes the following information arranged in order: identification information of frequency band combination 1, identification information of frequency band combination 3, and the above identification information is arranged in order of priority from high to low. The network device can determine based on the first information that the above two frequency band combinations are arranged in order of priority from high to low: frequency band combination 1, frequency band combination 3.

[0062] In addition, the terminal device may only report the priority information of some frequency band combinations, thereby simplifying the signaling. That is, the first information may only include the priority information of some frequency band combinations among the multiple frequency band combinations supported by the terminal device. The frequency band combination that is not reported can be considered as a low-priority frequency band combination, or as a high-priority frequency band combination. Whether the frequency band combination that is not reported is considered as a low-priority frequency band combination or a high-priority frequency band combination can be indicated by the first information or specified by the protocol, and this application does not limit this.

[0063] Exemplarily, it is assumed that the protocol stipulates that an unreported frequency band combination is considered a low-priority frequency band combination, and it is also assumed that the terminal device supports the following three frequency band combinations: frequency band combination 1, frequency band combination 2, and frequency band combination 3. The first information includes priority information of some of the above three frequency band combinations supported by the terminal device, such as only including priority information of frequency band combination 1 and frequency band combination 3. Assume that the network device determines that the priority of frequency band combination 1 is higher than the priority of frequency band combination 3 based on the priority information of frequency band combination 1 and frequency band combination 3. Then, in combination with the above protocol stipulation that an unreported frequency band combination is considered a low-priority frequency band combination, the network device can further determine that the above three frequency band combinations supported by the terminal device are, in descending order of priority, as follows: frequency band combination 1, frequency band combination 3, frequency band combination 2.

[0064] In some embodiments, the network device can determine the priority of at least one frequency band combination included in the multiple frequency band combinations included in the first information, or determine the priority order of the at least one frequency band combination, or determine the priority order of the multiple frequency band combinations supported by the terminal device. When determining the target frequency band combination to be configured for the terminal device, the network device can give priority to the frequency band combination with a higher priority, or not select the frequency band combination with a lower priority.

[0065] In some embodiments, the first information includes priority information for at least one single frequency band included in multiple frequency band combinations. A single frequency band refers to a single frequency band. The priority information for at least one single frequency band is used to determine the priority of each of the at least one single frequency bands, or to determine the priority order of the at least one single frequency band, or to determine the priority order of all single frequency bands supported by the terminal device. The first information may include priority information for all single frequency bands included in the multiple frequency band combinations supported by the terminal device, or may include priority information for only some of the single frequency bands included in the multiple frequency band combinations supported by the terminal device. For example, the terminal device supports the following three frequency band combinations: Band Combination 1 (Band A + Band B), Band Combination 2 (Band A + Band C), and Band Combination 3 (Band B + Band C). The three frequency band combinations supported by the terminal device include a total of three frequency bands, namely, Band A, Band B, and Band C. The first information may include priority information for all single frequency bands included in the multiple frequency band combinations supported by the terminal device, namely, priority information for Band A, Band B, and Band C. The first information may also include priority information of some single frequency bands included in the multiple frequency band combinations supported by the terminal device, such as priority information of only frequency band A and frequency band B.

[0066] In some embodiments, the priority information of the at least one single frequency band includes: a priority value for each of the at least one single frequency bands. A priority value is a numerical representation of a priority, and different priority values ​​correspond to different priorities. For example, a smaller priority value indicates a higher priority; conversely, a larger priority value indicates a lower priority. Alternatively, a larger priority value indicates a higher priority; conversely, a smaller priority value indicates a lower priority. Based on this, the network device can determine the priority of each of the at least one single frequency bands based on the priority information of the at least one single frequency band. Furthermore, based on the priority of each of the at least one single frequency bands, the priority order of the at least one single frequency band can be determined, or the priority order of all single frequency bands supported by the terminal device can be determined. For example, when the first information includes the priority values ​​of frequency bands A, B, and C, the network device can determine the priority order of frequency bands A, B, and C based on the first information. For example, when the first information includes the priority values ​​of frequency bands A and B, the network device can determine the priority order of frequency bands A and B based on the first information.

[0067] In some embodiments, the priority information of the at least one single frequency band includes identification information of the at least one single frequency band, and the identification information of the at least one single frequency band is arranged in order of priority. The identification information of the single frequency band is used to distinguish different single frequency bands, and different single frequency bands have different identification information, such as an ID (identifier). The priority order can be from high to low priority or from low to high priority. The priority order can be indicated in the first information or specified by the protocol, which is not limited in this application. Based on this, the network device can determine the priority order of the at least one single frequency band or the priority order of all single frequency bands supported by the terminal device based on the order of the identification information of the at least one single frequency band. For example, if the first information includes the identification information of frequency band A, the identification information of frequency band C, and the identification information of frequency band B, and the identification information is arranged in order of high to low priority, the network device can determine from the first information that the three single frequency bands are, in order of high to low priority, frequency band A, frequency band C, and frequency band B. For example, the first information includes the following information arranged in order: identification information of frequency band A, identification information of frequency band C, and the above identification information is arranged in order of priority from high to low. The network device can determine based on the first information that the above two single frequency bands are arranged in order of priority from high to low: frequency band A, frequency band C.

[0068] In addition, the terminal device may only report the priority information of some single frequency bands included in the multiple frequency band combinations it supports, thereby simplifying the signaling. That is to say, the first information may only include the priority information of some single frequency bands in all single frequency bands supported by the terminal device. An unreported single frequency band may be considered a low-priority single frequency band or a high-priority single frequency band. Whether an unreported single frequency band is considered a low-priority single frequency band or a high-priority single frequency band may be indicated by the first information or specified by the protocol, and this application does not limit this.

[0069] Exemplarily, it is assumed that the protocol stipulates that an unreported single frequency band is considered a low-priority single frequency band, and it is also assumed that the terminal device supports the following three single frequency bands: band A, band B, and band C. The first information includes priority information of some of the above three single frequency bands supported by the terminal device, such as only the priority information of band A and band C. Assume that the network device determines that the priority of band A is higher than the priority of band C based on the priority information of band A and band C. Then, in combination with the above protocol stipulation that an unreported single frequency band is considered a low-priority single frequency band, the network device can further determine that the above three single frequency bands supported by the terminal device are, in descending order of priority, band A, band C, and band B.

[0070] In some embodiments, when the first information includes priority information for at least one single frequency band included in multiple frequency band combinations, the network device can determine the priority of each of the at least one single frequency bands based on the first information, or determine the priority order of the at least one single frequency band, or determine the priority order of all single frequency bands supported by the terminal device. Subsequently, when determining a target frequency band combination to configure for the terminal device, the network device can prioritize single frequency bands with higher priorities to construct the target frequency band combination based on the priorities or priority order of the single frequency bands. For example, the network device determines based on the first information that the three single frequency bands supported by the terminal device are, in descending order of priority, Band A, Band C, and Band B. Assuming that the network device needs to configure a frequency band combination consisting of two single frequency bands for the terminal device, the three single frequency bands can be combined into the following three frequency band combinations: Band Combination 1 (Band A + Band B), Band Combination 2 (Band A + Band C), and Band Combination 3 (Band B + Band C). Since frequency band A and frequency band C have higher priorities, the network device may determine the frequency band combination 2 as the target frequency band combination to be configured for the terminal device.

[0071] In some embodiments, the first information is used to determine a preferred band combination among multiple band combinations. For example, the network device can determine the preferred band combination (preferred band combination) of the terminal device among the multiple band combinations supported by the terminal device based on the first information. The preferred band combination can be one or more, and this application is not limited to this. In some embodiments, the network device determines the target band combination configured for the terminal device from the above multiple band combinations based on the preferred band combination of the terminal device. For example, if the preferred band combination is one, the network device can determine the preferred band combination as the target band combination configured for the terminal device. For example, if the preferred band combination is multiple, the network device can randomly select a band combination from the multiple preferred band combinations, or select a band combination in combination with other information (including but not limited to user conditions and resource conditions in the network) as the target band combination configured for the terminal device.

[0072] In some embodiments, the first information includes tendency information of at least one frequency band combination among a plurality of frequency band combinations. The tendency information of at least one frequency band combination is used to determine the tendency result of each of the at least one frequency band combination, and the tendency result may be a tendency or no tendency. Exemplarily, the terminal device supports the following three frequency band combinations: frequency band combination 1, frequency band combination 2, and frequency band combination 3. The first information may include tendency information of all frequency band combinations among the plurality of frequency band combinations supported by the terminal device, that is, tendency information of frequency band combination 1, frequency band combination 2, and frequency band combination 3. The first information may also include tendency information of some frequency band combinations among the plurality of frequency band combinations supported by the terminal device, such as only including tendency information of frequency band combination 1 and frequency band combination 3.

[0073] In some embodiments, the tendency information of the at least one frequency band combination includes: the tendency value of each of the at least one frequency band combination. Exemplarily, when the tendency value is a first numerical value, the tendency result represented is tendency; when the tendency value is a second numerical value, the tendency result represented is no tendency. The specific numerical value of the tendency value can be specified in advance, such as specified in the protocol. Exemplarily, a tendency value of 1 represents tendency, and a tendency value of 0 represents no tendency; or, a tendency value of 0 represents tendency, and a tendency value of 1 represents no tendency. For example, when the first information includes the tendency values ​​of frequency band combination 1, frequency band combination 2, and frequency band combination 3, the network device can determine the tendency results of the terminal device for frequency band combination 1, frequency band combination 2, and frequency band combination 3 according to the first information. For example, when the first information includes the tendency values ​​of frequency band combination 1 and frequency band combination 3, the network device can determine the tendency results of the terminal device for frequency band combination 1 and frequency band combination 3 according to the first information.

[0074] In some embodiments, the preference information of the at least one frequency band combination includes: identification information of the at least one frequency band combination. At the same time, the identification information of the frequency band combination included in the first information indicates, through the first information indication or the protocol provision, whether it indicates a preferred frequency band combination or a non-preferred frequency band combination. For example, when the first information includes the identification information of frequency band combination 1, and the protocol provision indicates that the identification information of the frequency band combination included in the first information indicates a preferred frequency band combination, the network device can determine, based on the first information, that the preferred frequency band combination of the terminal device is frequency band combination 1.

[0075] In addition, the terminal device may only report the preference information of some frequency band combinations, thereby simplifying the signaling. That is to say, the first information may only include the preference information of some frequency band combinations among the multiple frequency band combinations supported by the terminal device. The frequency band combination that is not reported can be considered as a preferred frequency band combination, or as a non-preferred frequency band combination. Whether the unreported frequency band combination is considered as a preferred frequency band combination or a non-preferred frequency band combination can be indicated by the first information or specified by the protocol, and this application does not limit this.

[0076] In some embodiments, the network device can determine the preference results of each of the at least one frequency band combination based on the preference information of the at least one frequency band combination among the multiple frequency band combinations included in the first information, thereby further determining the preferred or non-preferred frequency band combination among the multiple frequency band combinations supported by the terminal device. When determining the target frequency band combination to be configured for the terminal device, the frequency band combination preferred by the terminal device can be preferentially selected, or the frequency band combination not preferred by the terminal device can be not selected.

[0077] In some embodiments, the first information includes tendency information of at least one single frequency band included in the plurality of frequency band combinations. The tendency information of at least one single frequency band is used to determine the tendency result of each of the at least one single frequency band, and the tendency result may be tendency or non-tendency. Exemplarily, the terminal device supports the following three single frequency bands: band A, band B, and band C. The first information may include tendency information of all single frequency bands among the plurality of single frequency bands supported by the terminal device, that is, tendency information of band A, band B, and band C. The first information may also include tendency information of some single frequency bands among the plurality of single frequency bands supported by the terminal device, such as only tendency information of band A and band C.

[0078] In some embodiments, the tendency information of the at least one single frequency band includes: the tendency value of each of the at least one single frequency bands. Exemplarily, when the tendency value is a first numerical value, the tendency result represented is tendency; when the tendency value is a second numerical value, the tendency result represented is no tendency. The specific numerical value of the tendency value can be specified in advance, such as specified in the protocol. Exemplarily, a tendency value of 1 represents tendency, and a tendency value of 0 represents no tendency; or, a tendency value of 0 represents tendency, and a tendency value of 1 represents no tendency. For example, when the first information includes the tendency values ​​of frequency bands A, B, and C, the network device can determine the tendency results of the terminal device for frequency bands A, B, and C based on the first information. For example, when the first information includes the tendency values ​​of frequency bands A and C, the network device can determine the tendency results of the terminal device for frequency bands A and C based on the first information.

[0079] In some embodiments, the preference information of the at least one single frequency band includes: identification information of the at least one single frequency band. At the same time, the identification information of the single frequency band included in the first information indicates, through the first information indication or the protocol provision, whether it indicates a preferred single frequency band or a non-preferred single frequency band. For example, when the first information includes identification information of frequency band A and identification information of frequency band B, and the protocol stipulates that the identification information of the single frequency band included in the first information indicates a preferred single frequency band, the network device can determine, based on the first information, that the preferred single frequency bands of the terminal device are frequency bands A and B.

[0080] In addition, the terminal device may only report the tendency information of some single frequency bands, thereby simplifying the signaling. That is, the first information may only include the tendency information of some single frequency bands among the multiple single frequency bands supported by the terminal device. The unreported single frequency band can be considered as a preferred single frequency band, or as a non-preferred single frequency band. Whether the unreported single frequency band is considered to be a preferred single frequency band or a non-preferred single frequency band can be indicated by the first information or specified by the protocol, and this application does not limit this.

[0081] In some embodiments, when the first information includes the tendency information of at least one single frequency band included in a plurality of frequency band combinations, the network device can determine the tendency result of each of the at least one single frequency bands based on the first information. Afterwards, when the network device determines the target frequency band combination to be configured for the terminal device, it can give priority to the inclined single frequency band to construct the target frequency band combination based on the tendency results of the above-mentioned single frequency bands. For example, the network device determines the tendency results of each of the three single frequency bands supported by the terminal device based on the first information, which are: frequency band A-tendency, frequency band B-no tendency, frequency band C-tendency. Assuming that the network device needs to configure a frequency band combination consisting of two single frequency bands for the terminal device, the network device can determine the frequency band combination consisting of frequency band A + frequency band C as the target frequency band combination configured for the terminal device.

[0082] The technical solution provided in the embodiment of the present application sends the first information to the network device through the terminal device, so that the network device can learn the frequency band combination that the terminal device prefers or has a high priority, and assists the network device in determining the target frequency band combination configured for the terminal device from multiple frequency band combinations supported by the terminal device, thereby helping to improve the accuracy and effectiveness of the frequency band combination configuration.

[0083] Below, several typical application scenarios involved in the technical solution of this application are introduced and explained.

[0084] Scenario 1: Falling back from a high-order frequency band combination to a low-order frequency band combination

[0085] In some embodiments, the multiple frequency band combinations supported by the above-mentioned terminal device are multiple low-order frequency band combinations corresponding to the first frequency band combination. The first frequency band combination is a combination of at least two frequency bands. The low-order frequency band combination corresponding to the first frequency band combination may include at least one frequency band, that is, the low-order frequency band combination corresponding to the first frequency band combination may include a combination of two or more frequency bands, or may include only one frequency band. The frequency bands included in the low-order frequency band combination corresponding to the first frequency band combination belong to the frequency bands included in the first frequency band combination; and the number of frequency bands included in the low-order frequency band combination corresponding to the first frequency band combination is less than the frequency bands included in the first frequency band combination. In other words, the frequency bands included in the low-order frequency band combination corresponding to the first frequency band combination are part of the frequency bands in the first frequency band combination.

[0086] For example, if the first frequency band combination is frequency band A + frequency band B + frequency band C, then the multiple low-order frequency band combinations corresponding to the first frequency band combination may include: low-order frequency band combination 1 (frequency band A + frequency band B), low-order frequency band combination 2 (frequency band A + frequency band C), and low-order frequency band combination 3 (frequency band B + frequency band C). In addition, if the low-order frequency band combination can also include only one frequency band, the low-order frequency band combinations corresponding to the first frequency band combination may further include: low-order frequency band combination 4 (frequency band A), low-order frequency band combination 5 (frequency band B), and low-order frequency band combination 6 (frequency band C).

[0087] In existing terminal capability reporting, terminal devices directly inform network devices of their supported band combinations (such as Band A + Band B + Band C), as well as the corresponding fallback lower-order band combinations, such as Low-order Band Combination 1 (Band A + Band B), Low-order Band Combination 2 (Band A + Band C), and Low-order Band Combination 3 (Band B + Band C). Assuming the terminal device prefers Low-order Band Combination 1 (Band A + Band B), for example, because Band A + Band B offer better antenna performance and superior performance, this information cannot be communicated to the network device under the existing mechanism. Without this information, the network device can only assume that these fallback band combinations are the same. Therefore, when configuring the fallback lower-order band combinations, the network device only needs to consider the number of users and resource availability on each carrier (cell). For example, at this time, the number of users and resource conditions in each cell are similar. The network device configures the terminal with low-order frequency band combination 3 (band B + band C). Compared with low-order frequency band combination 1 (band A + band B), the performance of the terminal device is limited.

[0088] For scenario 1, the first information sent by the terminal device can be used to determine the priority order of multiple low-order frequency band combinations, and can also be used to determine a preferred frequency band combination among multiple low-order frequency band combinations. The specific content of the first information can be found in the description of the above embodiment and will not be repeated here.

[0089] Exemplarily, the first information sent by the terminal device includes priority information of one or more low-order frequency band combinations corresponding to the first frequency band combination. As shown in Table 1 below, it is assumed that the frequency band combination currently used by the terminal device is a three-band combination, which is frequency band A + frequency band B + frequency band C. From the high-order frequency band combination, you can fall back to a two-band combination, or you can fall back to a single frequency band. Among them, the priority order of the two-band combination can be from high to low (or from low to high) as follows: frequency band A + frequency band B, frequency band A + frequency band C, frequency band B + frequency band C. The priority order of a single frequency band can be from high to low (or from low to high) as follows: frequency band A, frequency band B, frequency band C. In this way, the network device can directly determine the preferred low-order frequency band combination based on the priority information of each low-order frequency band combination.

[0090] Table 1

[0091] Exemplarily, the first information sent by the terminal device includes priority information of one or more single frequency bands included in the first frequency band combination. As shown in Table 2 below, it is assumed that the frequency band combination currently used by the terminal device is a three-band combination, namely, band A + band B + band C. Then the first information may include priority information of the three single frequency bands, band A, band B, and band C. For example, the priority order of these three single frequency bands can be from high to low (or from low to high) as follows: band A, band B, band C. In this way, the network device can assume that there are differences in performance between different frequency bands of the terminal device, so when configuring the low-order frequency band combination to fall back to, the frequency band combination containing the high-priority frequency band can be configured first. For example, when configuring two frequency band combinations, band A + band B can be configured first.

[0092] Table 2

[0093] In addition, the first information sent by the terminal device may include priority information or preference information for only some frequency bands or frequency band combinations, thereby simplifying signaling. Unreported frequency bands or frequency band combinations may be considered low-priority frequency bands or frequency band combinations, or high-priority frequency bands or frequency band combinations. Alternatively, unreported frequency bands or frequency band combinations may be considered non-preferred frequency bands or frequency band combinations, or preferred frequency bands or frequency band combinations.

[0094] Through the technical solution provided in the embodiment of the present application, the terminal device can inform the network device of the priority or tendency of multiple low-order frequency band combinations corresponding to a certain frequency band combination through the first information, thereby assisting the network device to configure the low-order frequency band combination for the terminal device to fall back to.

[0095] Scenario 2: Switching from a low-order frequency band combination to a high-order frequency band combination

[0096] In some embodiments, the multiple frequency band combinations supported by the above-mentioned terminal device are multiple high-order frequency band combinations corresponding to the second frequency band combination. The second frequency band combination includes at least one frequency band. The second frequency band combination may include at least two frequency bands, or may include only one frequency band. The high-order frequency band combination corresponding to the second frequency band combination includes at least two frequency bands. The frequency bands included in the high-order frequency band combination corresponding to the second frequency band combination include the frequency bands included in the first frequency band combination; and the number of frequency bands included in the high-order frequency band combination corresponding to the second frequency band combination is greater than the frequency bands included in the first frequency band combination. That is to say, the frequency bands included in the high-order frequency band combination corresponding to the second frequency band combination, in addition to all the frequency bands included in the first frequency band combination, also include at least one frequency band not included in the first frequency band combination.

[0097] Exemplarily, the second frequency band combination is frequency band A + frequency band B, then the multiple high-order frequency band combinations corresponding to the second frequency band combination may include: high-order frequency band combination 1 (frequency band A + frequency band B + frequency band C), high-order frequency band combination 2 (frequency band A + frequency band B + frequency band D), and high-order frequency band combination 3 (frequency band A + frequency band B + frequency band E).

[0098] In the scenario of configuring a high-order frequency band combination, assuming that the frequency band combination currently configured for the terminal device is frequency band A + frequency band B, the network device needs to configure an additional carrier for the terminal device. The alternative frequency band corresponding to this carrier can be frequency band C, frequency band D, or frequency band E. In the existing technology, the network device does not have a priori information to judge which of the three alternative frequency bands is a better frequency band for the terminal device. The network device can only know that the current terminal device can support the following three high-order frequency band combinations through the frequency band combination capability information supported by the terminal device: high-order frequency band combination 1 (frequency band A + frequency band B + frequency band C), high-order frequency band combination 2 (frequency band A + frequency band B + frequency band D), and high-order frequency band combination 3 (frequency band A + frequency band B + frequency band E). Therefore, when configuring the third carrier, the network device will only judge from the perspective of its own scheduling. This situation is similar to the scenario of configuring a low-order frequency band combination mentioned above. If the terminal device can inform the network device of the priority or preference information of the third frequency band of the corresponding frequency band combination (band A + band B), the network device can refer to this information to configure a better frequency band and carrier for the terminal device.

[0099] For scenario 2, the first information sent by the terminal device can be used to determine the priority order of multiple high-order frequency band combinations, and can also be used to determine a preferred frequency band combination among multiple high-order frequency band combinations. The specific content of the first information can be found in the description of the above embodiment and will not be repeated here.

[0100] Exemplarily, the first information sent by the terminal device includes priority information of one or more high-order frequency band combinations corresponding to the second frequency band combination. As shown in Table 3 below, assuming that the frequency band combination currently used by the terminal device is frequency band A + frequency band B, the priority order of the three high-order frequency band combinations from high to low (or from low to high) can be: frequency band A + frequency band B + frequency band C, frequency band A + frequency band B + frequency band D, frequency band A + frequency band B + frequency band E. In this way, the network device can directly determine the preferred high-order frequency band combination based on the priority information of each high-order frequency band combination.

[0101] Table 3

[0102] Exemplarily, the first information sent by the terminal device includes priority information of one or more candidate added single frequency bands when the second frequency band combination is adjusted to a higher-order frequency band combination. As shown in Table 4 below, assuming that the frequency band combination currently used by the terminal device is Band A + Band B, the priority order of the three candidate added single frequency bands can be, from high to low (or from low to high), Band C, Band D, and Band E. In this way, the network device can determine the added frequency band based on the priority information of each candidate added single frequency band, for example, giving priority to adding Band C.

[0103] Table 4

[0104] In addition, the first information sent by the terminal device may include priority information or preference information for only some frequency bands or frequency band combinations, thereby simplifying signaling. Unreported frequency bands or frequency band combinations may be considered low-priority frequency bands or frequency band combinations, or high-priority frequency bands or frequency band combinations. Alternatively, unreported frequency bands or frequency band combinations may be considered non-preferred frequency bands or frequency band combinations, or preferred frequency bands or frequency band combinations.

[0105] Through the technical solution provided in the embodiment of the present application, the terminal device can inform the network device of the priority or tendency of multiple high-order frequency band combinations corresponding to a certain frequency band combination through the first information, thereby assisting the network device to configure the high-order frequency band combination adjusted to the terminal device.

[0106] Scenario 3: Carrier switching scenario

[0107] In some embodiments, the multiple frequency band combinations are multiple candidate frequency band combinations for carrier switching.

[0108] During carrier switching, a terminal device can switch from one frequency band combination to another. These two frequency band combinations are two different frequency band combinations, and each frequency band combination can include one or more frequency bands.

[0109] Exemplarily, the terminal device supports the following four carriers: CC1 (corresponding to frequency band A), CC2 (corresponding to frequency band B), CC3 (corresponding to frequency band C), and CC4 (corresponding to frequency band D). The network device needs to configure two carriers for the terminal device. These two carriers are selected from the above four carriers supported by the terminal device. The above multiple candidate frequency band combinations may include: frequency band combination 1 (frequency band A + frequency band B), frequency band combination 2 (frequency band A + frequency band C), frequency band combination 3 (frequency band A + frequency band D), frequency band combination 4 (frequency band B + frequency band C), frequency band combination 5 (frequency band B + frequency band D), and frequency band combination 6 (frequency band C + frequency band D).

[0110] In the current carrier switching transmission, as shown in Figure 8, the network device can select one or more of several candidate carriers for transmission at a certain moment. For example, at time 1, the network device selects to configure CC1 and CC2 for transmission, and at time 2, it selects to configure CC2 and CC3 for transmission. Similar to the previous scenario of configuring low-order / high-order frequency band combinations, in the existing technology, the network device can only schedule and select which CC to transmit based on the current service conditions on several CCs, without considering the performance differences of the terminal device on several carriers or the priority / preferred configuration carriers.

[0111] For scenario 3, the first information sent by the terminal device can be used to determine the priority order of multiple candidate frequency band combinations when switching carriers, and can also be used to determine the preferred frequency band combination among multiple candidate frequency band combinations when switching carriers. The specific content of the first information can be found in the description of the above embodiment and will not be repeated here.

[0112] Exemplarily, the first information sent by the terminal device includes priority information of one or more candidate frequency band combinations when the carrier is switched. As shown in Table 5 below, assuming that the terminal device supports the following four carriers: CC1 (corresponding to frequency band A), CC2 (corresponding to frequency band B), CC3 (corresponding to frequency band C), CC4 (corresponding to frequency band D), the network device needs to configure two carriers for the terminal device, and these two carriers are selected from the above four carriers supported by the terminal device. Then there are 6 candidate frequency band combinations, and the priority order of the 6 candidate frequency band combinations from high to low (or from low to high) can be: A+B, A+C, A+D, B+C, B+D, C+D. In this way, the network device can directly determine the preferred frequency band combination based on the priority information of each candidate frequency band combination.

[0113] Table 5

[0114] Exemplarily, the first information sent by the terminal device includes priority information of one or more candidate single-frequency bands when the carrier is switched. As shown in Table 6 below, assuming that the terminal device supports the following four carriers: CC1 (corresponding to frequency band A), CC2 (corresponding to frequency band B), CC3 (corresponding to frequency band C), CC4 (corresponding to frequency band D), there are four candidate single-frequency bands, and the priority order of the four candidate single-frequency bands can be from high to low (or from low to high): A, B, C, D. In this way, the network device can assume that there are differences in performance between different frequency bands of the terminal device, so when configuring the frequency band combination to switch to, the frequency band combination containing the high-priority frequency band can be configured first. For example, when configuring switching to a two-band combination, frequency band A + frequency band B can be configured first.

[0115] Table 6

[0116] In addition, the first information sent by the terminal device may include priority information or preference information for only some frequency bands or frequency band combinations, thereby simplifying signaling. Unreported frequency bands or frequency band combinations may be considered low-priority frequency bands or frequency band combinations, or high-priority frequency bands or frequency band combinations. Alternatively, unreported frequency bands or frequency band combinations may be considered non-preferred frequency bands or frequency band combinations, or preferred frequency bands or frequency band combinations.

[0117] Through the technical solution provided in the embodiments of the present application, the terminal device can inform the network device of its priority or preference for multiple candidate frequency band combinations when switching carriers through the first information, so that the network device can take the carrier priority or preference information of the terminal device into consideration when subsequently scheduling switching transmissions.

[0118] Next, the indication method of the first information mentioned above is introduced and explained.

[0119] In some embodiments, the first information is statically indicated. Considering the inter-band performance differences of the terminal device itself, such as the difference in RF or antenna performance between Band A and Band B, since such differences are relatively fixed, the first information can be indicated to the network device in a static manner.

[0120] In some embodiments, the first information is sent when the terminal device initially accesses the network. For example, when the terminal device initially accesses the network, the terminal device generates terminal capability information, which may include the first information. Through this first information, the terminal device may inform the network device of the priority order of multiple frequency band combinations it supports, or a preferred frequency band combination among the multiple frequency band combinations.

[0121] In some embodiments, the first information is sent after the RRC (Radio Resource Control) connection is established. For example, after the RRC connection is established, the terminal device may send RRC signaling to the network device, and the RRC signaling may include the first information. Through the first information, the terminal device can inform the network device of the priority order of multiple frequency band combinations it supports or the preferred frequency band combination among the multiple frequency band combinations. In some embodiments, the above-mentioned first information is carried in an RRC reconfiguration complete message. For example, when the network device configures a frequency band combination for the terminal device through an RRC reconfiguration (RRCReconfiguration) message, the terminal device can report the priority order of multiple frequency band combinations corresponding to the frequency band combination or the preferred frequency band combination in the RRC reconfiguration complete (RRCReconfigurationComplete) message.

[0122] For example, for the above scenario 1, when the network device configures a frequency band combination for the terminal device through the RRCReconfiguration message, the terminal device can report the priority order of multiple low-order frequency band combinations corresponding to the frequency band combination or the preferred frequency band combination in the RRCReconfigurationComplete message.

[0123] For example, for the above scenario 2, when the network device configures a frequency band combination for the terminal device through the RRCReconfiguration message, the terminal device can report the priority order of multiple high-order frequency band combinations corresponding to the frequency band combination or the preferred frequency band combination in the RRCReconfigurationComplete message.

[0124] For example, for the above scenario 3, when the network device configures a frequency band combination for the terminal device through the RRCReconfiguration message, the terminal device can report the priority order of multiple candidate frequency band combinations or the preferred frequency band combination when the carrier corresponding to the frequency band combination is switched in the RRCReconfigurationComplete message.

[0125] In some embodiments, after determining a target frequency band combination to be configured for the terminal device, the network device sends a second message to the terminal device. In response, the terminal device receives the second message sent by the network device, where the second message is used to instruct the terminal device to use the target frequency band combination. The network device may determine the target frequency band combination to be configured for the terminal device based on the first information. For example, the network device determines the target frequency band combination to be configured for the terminal device based on the first information and actual user and resource conditions in the network.

[0126] In some embodiments, the second information is carried in an RRC reconfiguration message; or, the second information is carried in a MAC (Medium Access Control) signaling.

[0127] In some embodiments, the network device sends an RRC reconfiguration message to the terminal device, the RRC reconfiguration message including second information, the second information being used to instruct the terminal device to use the target frequency band combination. Instructing the terminal device to use the target frequency band combination via the RRC reconfiguration message may include configuring the target frequency band combination for the terminal device via the RRC reconfiguration message.

[0128] In some embodiments, a network device sends MAC signaling to a terminal device, the MAC signaling including second information, the second information being used to instruct the terminal device to use a target frequency band combination. Instructing the terminal device to use the target frequency band combination through MAC signaling may include the following two methods: first, activating the target frequency band combination through MAC signaling; and second, deactivating other frequency band combinations other than the target frequency band combination among multiple frequency band combinations supported by the terminal device through MAC signaling.

[0129] For example, the network device configures a frequency band combination (such as Band A + Band B + Band C) to the terminal device through an RRCReconfiguration message. Based on this configuration, the network device can use MAC signaling to activate or deactivate some of the carriers as appropriate, allowing the terminal device to use the target frequency band combination to quickly adapt to changes in wireless channels and cell resources. For carriers deactivated by MAC signaling, the carrier remains a configured carrier, but is currently inactive.

[0130] It should be noted that the above-mentioned method of sending the second information from the network device to the terminal device is applicable to any of the scenarios 1, 2 and 3 introduced above, and each scenario will not be given as an example here.

[0131] Through the above method, the terminal device can use static indication to indicate the first information to the network device, so that the network device can determine the frequency band combination to be configured or activated / deactivated for the terminal device based on the first information and the user situation and resource situation in the actual network.

[0132] In some embodiments, the first information is dynamically indicated. Dynamic indication has the advantage of being more flexible than static indication. In static indication, the terminal device cannot consider the impact of changes in actual application scenarios (such as the surrounding environment) and can only report to the network device its preference or priority information for each carrier configuration, activation, and transmission rotation based on the terminal device's own inter-band performance differences. When the terminal device uses a dynamic indication method, in addition to considering the terminal device's own inter-band performance differences, it can also further take into account changes in surrounding environmental conditions and dynamically inform the network device of priority information or preference information. A typical example is the problem of hand occlusion. As shown in Figure 9, when a person approaches the terminal device with their left hand, the bottom antenna 3 will detect the human body and reduce its transmission power capability, causing the corresponding frequency band performance to degrade. The dynamic indication method can inform the network device at this time that the frequency band performance is poor and the priority is reduced, etc., which cannot be reflected in static reporting.

[0133] In some embodiments, the first information is sent by the terminal device after receiving an inquiry from the network device.

[0134] Exemplarily, when a network device configures a frequency band combination for a terminal device, it may inquire about the priority information or preference information of multiple frequency band combinations supported by the terminal device in the above configuration message (such as RRC signaling), and the terminal device may carry the above first information in the response message to inform the network device of the priority information or preference information of multiple frequency band combinations supported by the terminal device.

[0135] The method in which the terminal device sends the first information after receiving the inquiry from the network device is applicable to any of the scenarios 1, 2 and 3 introduced above, and each scenario will not be given an example here.

[0136] In some embodiments, the first information is actively sent by the terminal device.

[0137] For example, after a network device configures a frequency band or frequency band combination for a terminal device, if the terminal device detects a change in ambient conditions during actual communication, causing one of the frequency bands or frequency band combination to no longer be the optimal resource, the terminal device may proactively send first information to the network device. Upon receiving the first information sent by the terminal device, the network device may adjust resource configuration based on the information, thereby optimizing the performance of the terminal device.

[0138] In some embodiments, a terminal device sends a resource change request to a network device. The resource change request is used to request an adjustment to a frequency band or frequency band combination. For example, after the network device configures a frequency band or frequency band combination for the terminal device, if the terminal device detects changes in ambient conditions during actual communication that render a frequency band or frequency band combination no longer optimal, the terminal device may proactively send a resource change request to the network device. Upon receiving the resource change request from the terminal device, the network device may adjust its resource configuration based on the request to optimize the performance of the terminal device.

[0139] In some embodiments, the resource change request includes the first information. By including the first information in the resource change request, the network device can obtain the priority information or preference information of the terminal device for different frequency band combinations based on the first information carried therein after receiving the resource change request, thereby assisting the network device in adjusting a more appropriate frequency band combination for the terminal device.

[0140] In some embodiments, the resource change request may also not include the first information. For example, the first information is sent through the static indication method described above, such as the first information is sent when the terminal device initially accesses the network; or, the first information is sent after the RRC connection is established. When the terminal device detects changes in the surrounding environmental conditions during actual communication, causing a certain frequency band or frequency band combination to no longer be the optimal resource, the terminal device may actively send a resource change request to the network device. After receiving the resource change request, the network device may adjust a more appropriate frequency band combination for the terminal device in combination with the first information received previously, or the user situation and resource situation in the actual network.

[0141] Taking Figure 9 as an example, assume that antenna 1 corresponds to frequency band A, antenna 2 corresponds to frequency band B, antenna 3 corresponds to frequency band C, and antenna 4 corresponds to frequency band D. The network device initially configures the terminal device with a frequency band combination of frequency bands A, B, and C. When antenna 3 is blocked by a person, causing performance degradation, the terminal device can send a resource change request to the network device, informing it of the deterioration in performance of frequency band C. Upon receiving this request, the network device can adjust the frequency band combination to frequency bands A, B, and D, thereby optimizing the terminal device's uplink transmission performance.

[0142] In some embodiments, the resource change request is carried by any of the following: RRC signaling, MAC signaling, or a physical layer message. In some embodiments, the message carrying the resource change request may be a reused existing signaling message, such as a PHR (Power Headroom Report) message or a CSI (Channel State Information) message, or a proprietary signaling message, such as a ResourceChangeRequest message.

[0143] In some embodiments, the resource change request is periodic information. For example, the terminal device periodically monitors the performance of each configured frequency band or frequency band combination and sends a resource change request to the network device. In some embodiments, the information carried in the resource change request can be a quality indication of the frequency band or frequency band combination (such as information indicating quality deterioration, excellent quality, etc.); or, it can be defaulted to not reporting when the quality of the currently used frequency band or frequency band combination meets the standard, and sending a resource change request when the quality of the currently used frequency band or frequency band combination does not meet the standard.

[0144] In some embodiments, the resource change request is an event-triggered message. For example, when the terminal device detects that the performance of the currently used frequency band or frequency band combination has changed, the terminal device sends a resource change request to the network device.

[0145] For example, when a terminal device detects that the quality of a frequency band or carrier has deteriorated below a certain threshold, or when a terminal device detects that a frequency band or carrier is about to limit its transmit power due to electromagnetic radiation or other factors, the current carrier is no longer the optimal carrier configuration or is no longer suitable for continued transmission. The terminal device sends a resource change request to the network device.

[0146] For example, when the terminal device detects that the quality of a certain frequency band or a certain carrier is better than a certain threshold, or when the external factors that limit the performance of a certain carrier (such as human body obstruction) have been removed, the terminal device sends a resource change request to the network device, indicating that the priority of the carrier / frequency band is restored or increased.

[0147] After receiving a resource change request from a terminal device, the network device can refer to the request to change the resource configuration or maintain the original configuration. However, regardless of whether the network device changes the resource configuration or maintains the original configuration, the terminal device must follow the resources actually scheduled by the network device for data transmission.

[0148] The method in which the terminal device actively sends the first information is applicable to any of the scenarios 1, 2 and 3 introduced above, and each scenario will not be given examples one by one here.

[0149] Through the above method, the terminal device can use a dynamic indication method to indicate the first information to the network device, which has the advantage of being more flexible than a static indication method.

[0150] It should be noted that the first information sent by the terminal device can be used to report the uplink carrier configuration scenario and the downlink carrier configuration scenario separately, or can be reported together (that is, the reported first information is applicable to both the uplink carrier configuration scenario and the downlink carrier configuration scenario).

[0151] It should also be noted that in the above method embodiments, the technical solution of this application is described only from the perspective of the interaction between the terminal device and the network device. The above steps performed by the terminal device can be independently implemented as an information indication method on the terminal device side, and the above steps performed by the network device can be independently implemented as an information indication method on the network device side. In addition, the embodiments provided herein can be arbitrarily combined to form new embodiments, which are all within the scope of protection of this application.

[0152] The following are device embodiments of the present application, which can be used to implement the method embodiments of the present application. For details not disclosed in the device embodiments of the present application, please refer to the method embodiments of the present application.

[0153] Please refer to Figure 10, which shows a block diagram of an information indication device provided by one embodiment of the present application. This device has the function of implementing the above-mentioned information indication method example. The function can be implemented by hardware or by hardware executing corresponding software. The device can be the terminal device described above, or it can be set in a terminal device. As shown in Figure 10, the device 1000 may include: a sending module 1010.

[0154] The sending module 1010 is used to send first information to the network device, where the first information is used to assist the network device in determining a target frequency band combination configured for the terminal device from a plurality of frequency band combinations supported by the terminal device.

[0155] In some embodiments, the first information is used to determine a priority order of the multiple frequency band combinations.

[0156] In some embodiments, the first information includes priority information of at least one frequency band combination among the plurality of frequency band combinations.

[0157] In some embodiments, the first information includes priority information of at least one single frequency band included in the multiple frequency band combinations.

[0158] In some embodiments, the first information is used to determine a preferred frequency band combination among the multiple frequency band combinations.

[0159] In some embodiments, the first information includes preference information of at least one frequency band combination among a plurality of frequency band combinations.

[0160] In some embodiments, the first information includes preference information of at least one single frequency band included in the multiple frequency band combinations.

[0161] In some embodiments, the multiple frequency band combinations are multiple low-order frequency band combinations corresponding to the first frequency band combination; or, the multiple frequency band combinations are multiple high-order frequency band combinations corresponding to the second frequency band combination; or, the multiple frequency band combinations are multiple candidate frequency band combinations during carrier switching.

[0162] In some embodiments, the first information is statically indicated.

[0163] In some embodiments, the first information is sent when the terminal device initially accesses the network; or, the first information is sent after an RRC connection is established.

[0164] In some embodiments, the first information is dynamically indicated.

[0165] In some embodiments, the first information is sent by the terminal device after receiving an inquiry from the network device; or, the first information is actively sent by the terminal device.

[0166] In some embodiments, when the first information is actively sent by the terminal device, the sending module 1010 is used to send a resource change request to the network device, and the resource change request includes the first information.

[0167] In some embodiments, the resource change request is a periodic message; or, the resource change request is an event-triggered message.

[0168] In some embodiments, the resource change request is carried by any one of the following: RRC signaling, MAC signaling, and physical layer message.

[0169] In some embodiments, as shown in FIG10 , the apparatus 1000 further includes a receiving module 1020 for receiving second information sent by the network device, where the second information is used to instruct the terminal device to use the target frequency band combination.

[0170] In some embodiments, the second information is carried in an RRC reconfiguration message; or, the second information is carried in MAC signaling.

[0171] Please refer to Figure 11, which shows a block diagram of an information indication device provided by another embodiment of the present application. This device has the function of implementing the above-mentioned information indication method example. The function can be implemented by hardware or by hardware executing corresponding software. This device can be the network device described above, or it can be installed in a network device. As shown in Figure 11, the device 1100 can include: a receiving module 1110.

[0172] The receiving module 1110 is used to receive first information sent by the terminal device, where the first information is used to assist the network device in determining a target frequency band combination configured for the terminal device from multiple frequency band combinations supported by the terminal device.

[0173] In some embodiments, the first information is used to determine a priority order of the multiple frequency band combinations.

[0174] In some embodiments, the first information includes priority information of at least one frequency band combination among the plurality of frequency band combinations.

[0175] In some embodiments, the first information includes priority information of at least one single frequency band included in the multiple frequency band combinations.

[0176] In some embodiments, the first information is used to determine a preferred frequency band combination among the multiple frequency band combinations.

[0177] In some embodiments, the first information includes preference information of at least one frequency band combination among a plurality of frequency band combinations.

[0178] In some embodiments, the first information includes preference information of at least one single frequency band included in the multiple frequency band combinations.

[0179] In some embodiments, the multiple frequency band combinations are multiple low-order frequency band combinations corresponding to the first frequency band combination; or, the multiple frequency band combinations are multiple high-order frequency band combinations corresponding to the second frequency band combination; or, the multiple frequency band combinations are multiple candidate frequency band combinations during carrier switching.

[0180] In some embodiments, the first information is statically indicated.

[0181] In some embodiments, the first information is sent when the terminal device initially accesses the network; or, the first information is sent after an RRC connection is established.

[0182] In some embodiments, the first information is dynamically indicated.

[0183] In some embodiments, the first information is sent by the terminal device after receiving an inquiry from the network device; or, the first information is actively sent by the terminal device.

[0184] In some embodiments, when the first information is actively sent by the terminal device, the receiving module 1110 is further used to receive a resource change request sent by the terminal device, where the resource change request includes the first information.

[0185] In some embodiments, the resource change request is a periodic message; or, the resource change request is an event-triggered message.

[0186] In some embodiments, the resource change request is carried by any one of the following: RRC signaling, MAC signaling, and physical layer message.

[0187] In some embodiments, the apparatus 1100 further includes a sending module 1120 configured to send second information to the terminal device, where the second information is used to instruct the terminal device to use the target frequency band combination.

[0188] In some embodiments, the second information is carried in an RRC reconfiguration message; or, the second information is carried in MAC signaling.

[0189] It should be noted that the device provided in the above embodiment only uses the division of the above-mentioned functional modules as an example to implement its functions. In actual applications, the above-mentioned functions can be assigned to different functional modules according to actual needs, that is, the content structure of the device can be divided into different functional modules to complete all or part of the functions described above.

[0190] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0191] Please refer to Figure 12, which shows a schematic diagram of the structure of a terminal device 1200 provided in one embodiment of the present application. Terminal device 1200 can be used to execute the method steps performed by the terminal device in the above embodiments. Terminal device 1200 may include: a processor 1201, a transceiver 1202, and a memory 1203. The transceiver 1202 is used to implement the functions of the above-mentioned sending module and / or receiving module, and the processor 1201 can be used to implement other processing functions or control transmission and / or reception.

[0192] The processor 1201 includes one or more processing cores. The processor 1201 executes various functional applications and information processing by running software programs and modules.

[0193] The transceiver 1202 may include a receiver and a transmitter. For example, the receiver and the transmitter may be implemented as the same wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0194] The memory 1203 may be connected to the processor 1201 and the transceiver 1202 .

[0195] The memory 1203 may be used to store a computer program executed by the processor, and the processor 1201 is used to execute the computer program to implement the various steps performed by the terminal device in the above method embodiment.

[0196] In addition, the memory 1203 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, and the volatile or non-volatile storage device includes but is not limited to: a magnetic disk or optical disk, an electrically erasable programmable read-only memory, an erasable programmable read-only memory, a static access memory, a read-only memory, a magnetic memory, a flash memory, and a programmable read-only memory.

[0197] In some embodiments, the transceiver 1202 is used to send first information to a network device, where the first information is used to assist the network device in determining a target frequency band combination configured for the terminal device from a plurality of frequency band combinations supported by the terminal device.

[0198] For details not described in detail in the above embodiments, please refer to the introduction in the above method embodiments, which will not be repeated here.

[0199] Please refer to Figure 13, which shows a schematic diagram of the structure of a network device 1300 provided in one embodiment of the present application. Network device 1300 can be used to execute the method steps performed by the network device in the above embodiments. Network device 1300 may include: a processor 1301, a transceiver 1302, and a memory 1303. The transceiver 1302 is used to implement the functions of the above-mentioned sending module and / or receiving module, and the processor 1301 can be used to implement other processing functions or control sending and / or receiving.

[0200] The processor 1301 includes one or more processing cores. The processor 1301 executes various functional applications and information processing by running software programs and modules.

[0201] The transceiver 1302 may include a receiver and a transmitter. For example, the transceiver 1302 may include a wired communication component, which may include a wired communication chip and a wired interface (such as an optical fiber interface). Alternatively, the transceiver 1302 may also include a wireless communication component, which may include a wireless communication chip and a radio frequency antenna.

[0202] The memory 1303 may be connected to the processor 1301 and the transceiver 1302 .

[0203] The memory 1303 may be used to store a computer program executed by the processor, and the processor 1301 is used to execute the computer program to implement each step performed by the network device in the above method embodiment.

[0204] In addition, the memory 1303 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, including but not limited to: magnetic disk or optical disk, electrically erasable programmable read-only memory, erasable programmable read-only memory, static access memory, read-only memory, magnetic memory, flash memory, and programmable read-only memory.

[0205] In some embodiments, the transceiver 1302 is used to receive first information sent by a terminal device, where the first information is used to assist the network device in determining a target frequency band combination configured for the terminal device from a plurality of frequency band combinations supported by the terminal device.

[0206] For details not described in detail in this embodiment, please refer to the above embodiments and will not be described in detail here.

[0207] An embodiment of the present application also provides a computer-readable storage medium, in which a computer program is stored, and the computer program is used to be executed by a processor to implement the above-mentioned information indication method on the terminal device side, or to implement the above-mentioned information indication method on the network device side. Optionally, the computer-readable storage medium may include: ROM (Read-Only Memory), RAM (Random-Access Memory), SSD (Solid State Drives) or optical disks, etc. Among them, the random access memory may include ReRAM (Resistance Random Access Memory) and DRAM (Dynamic Random Access Memory).

[0208] An embodiment of the present application also provides a chip, which includes a programmable logic circuit and / or program instructions. When the chip is running, it is used to implement the above-mentioned information indication method on the terminal device side, or to implement the above-mentioned information indication method on the network device side.

[0209] An embodiment of the present application also provides a computer program product, which includes a computer program, and the computer program is stored in a computer-readable storage medium. The processor reads and executes the computer program from the computer-readable storage medium to implement the above-mentioned information indication method on the terminal device side, or implements the above-mentioned information indication method on the network device side.

[0210] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0211] In the description of the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and being indicated, configuration and being configured, etc.

[0212] In some embodiments of the present application, "predefined" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., including a terminal device and a network device), and the present application does not limit the specific implementation method. For example, predefined may refer to information defined in a protocol.

[0213] In some embodiments of the present application, the "protocol" may refer to a standard protocol in the field of communications, for example, it may include an LTE protocol, a NR protocol, and related protocols used in future communication systems, and this application does not limit this.

[0214] In this document, "plurality" refers to two or more. "And / or" describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. The character " / " generally indicates an "or" relationship between the associated objects.

[0215] The term “greater than or equal to” mentioned herein may mean greater than or equal to, or greater than, and the term “less than or equal to” may mean less than or equal to, or less than.

[0216] In addition, the step numbers described in this document only illustrate a possible execution order between the steps. In some other embodiments, the above steps may not be executed in the order of the numbers, such as two steps with different numbers are executed at the same time, or two steps with different numbers are executed in the opposite order of the diagram. The embodiments of the present application are not limited to this.

[0217] Those skilled in the art will appreciate that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented using hardware, software, firmware, or any combination thereof. When implemented using software, these functions can be stored in a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media, wherein communication media include any media that facilitates the transmission of computer programs from one place to another. The storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0218] The above description is merely an exemplary embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An information indication method, characterized in that: The method is performed by a terminal device, and the method includes: Sending first information to a network device, where the first information is used to assist the network device in determining a target frequency band combination configured for the terminal device from a plurality of frequency band combinations supported by the terminal device.

2. The method according to claim 1, characterized in that: The first information is used to determine a priority order of the multiple frequency band combinations.

3. The method according to claim 2, characterized in that The first information includes priority information of at least one frequency band combination among the multiple frequency band combinations.

4. The method according to claim 2, characterized in that: The first information includes priority information of at least one single frequency band included in the multiple frequency band combinations.

5. The method according to claim 1, characterized in that The first information is used to determine a preferred frequency band combination among the multiple frequency band combinations.

6. The method according to claim 5, characterized in that The first information includes preference information of at least one frequency band combination among a plurality of frequency band combinations.

7. The method according to claim 5, characterized in that The first information includes preference information of at least one single frequency band included in the multiple frequency band combinations.

8. The method according to any one of claims 1 to 7, characterized in that: The multiple frequency band combinations are multiple low-order frequency band combinations corresponding to the first frequency band combination; or, The multiple frequency band combinations are multiple high-order frequency band combinations corresponding to the second frequency band combination; or, The multiple frequency band combinations are multiple candidate frequency band combinations when carrier switching occurs.

9. The method according to any one of claims 1 to 8, characterized in that: The first information is statically indicated.

10. The method according to claim 9, characterized in that The first information is sent when the terminal device initially accesses the network; or, the first information is sent after a radio resource control RRC connection is established.

11. The method according to any one of claims 1 to 8, characterized in that: The first information is dynamically indicated.

12. The method according to claim 11, characterized in that The first information is sent by the terminal device after receiving the inquiry from the network device; or, the first information is actively sent by the terminal device.

13. The method according to claim 12, characterized in that In the case where the first information is actively sent by the terminal device, sending the first information to the network device includes: A resource change request is sent to the network device, where the resource change request includes the first information.

14. The method according to claim 13, characterized in that The resource change request is a periodic message; or, the resource change request is an event-triggered message.

15. The method according to claim 13 or 14, characterized in that The resource change request is carried by any one of the following: RRC signaling, media access control MAC signaling, and physical layer message.

16. The method according to any one of claims 1 to 15, characterized in that After sending the first information to the network device, the method further includes: Receive second information sent by the network device, where the second information is used to instruct the terminal device to use the target frequency band combination.

17. The method according to claim 16, characterized in that The second information is carried in an RRC reconfiguration message; or, the second information is carried in MAC signaling.

18. An information indication method, characterized in that: The method is performed by a network device, and the method includes: receiving first information sent by a terminal device, wherein the first information is used to assist the network device in receiving information from the terminal device; Determine a target frequency band combination configured for the terminal device from multiple frequency band combinations supported by the terminal.

19. The method according to claim 18, characterized in that The first information is used to determine a priority order of the multiple frequency band combinations.

20. The method according to claim 19, characterized in that The first information includes priority information of at least one frequency band combination among the multiple frequency band combinations.

21. The method according to claim 19, characterized in that The first information includes priority information of at least one single frequency band included in the multiple frequency band combinations.

22. The method according to claim 18, characterized in that The first information is used to determine a preferred frequency band combination among the multiple frequency band combinations.

23. The method according to claim 22, characterized in that The first information includes preference information of at least one frequency band combination among a plurality of frequency band combinations.

24. The method according to claim 22, characterized in that The first information includes preference information of at least one single frequency band included in the multiple frequency band combinations.

25. The method according to any one of claims 18 to 24, characterized in that The multiple frequency band combinations are multiple low-order frequency band combinations corresponding to the first frequency band combination; or, The multiple frequency band combinations are multiple high-order frequency band combinations corresponding to the second frequency band combination; or, The multiple frequency band combinations are multiple candidate frequency band combinations when carrier switching occurs.

26. The method according to any one of claims 18 to 25, characterized in that The first information is statically indicated.

27. The method according to claim 26, characterized in that The first information is sent when the terminal device initially accesses the network; or, the first information is sent after a radio resource control RRC connection is established.

28. The method according to any one of claims 18 to 25, characterized in that The first information is dynamically indicated.

29. The method according to claim 28, characterized in that The first information is sent by the terminal device after receiving the inquiry from the network device; or, the first information is actively sent by the terminal device.

30. The method according to claim 29, characterized in that In the case where the first information is actively sent by the terminal device, the receiving the first information sent by the terminal device includes: A resource change request sent by the terminal device is received, where the resource change request includes the first information.

31. The method according to claim 30, characterized in that The resource change request is a periodic message; or, the resource change request is an event-triggered message.

32. The method according to claim 30 or 31, characterized in that The resource change request is carried by any one of the following: RRC signaling, media access control MAC signaling, and physical layer message.

33. The method according to any one of claims 18 to 32, characterized in that After receiving the first information sent by the terminal device, the method further includes: Sending second information to the terminal device, where the second information is used to instruct the terminal device to use the target frequency band combination.

34. The method according to claim 33, characterized in that The second information is carried in an RRC reconfiguration message; or, the second information is carried in MAC signaling.

35. An information indicating device, characterized in that: The device comprises: A sending module is used to send first information to a network device, where the first information is used to assist the network device in determining a target frequency band combination configured for the terminal device from a plurality of frequency band combinations supported by the terminal device.

36. An information indicating device, characterized in that: The device comprises: The receiving module is used to receive first information sent by the terminal device, where the first information is used to assist the network device in determining a target frequency band combination configured for the terminal device from a plurality of frequency band combinations supported by the terminal device.

37. A communication device, characterized in that: The communication device comprises a processor and a memory, wherein a computer program is stored in the memory, and the processor executes the computer program to implement the method according to any one of claims 1 to 17, or implements the method according to any one of claims 18 to 34.

38. A computer-readable storage medium, characterized in that: The storage medium stores a computer program, and the computer program is used to be executed by a processor to implement the method according to any one of claims 1 to 17, or to implement the method according to any one of claims 18 to 34.

39. A chip, characterized in that: The chip includes a programmable logic circuit and / or program instructions, and when the chip is running, it is used to implement the method according to any one of claims 1 to 17, or to implement the method according to any one of claims 18 to 34.

40. A computer program product, characterized in that The computer program product comprises a computer program, which is stored in a computer-readable storage medium, and the processor reads and executes the computer program from the computer-readable storage medium to implement the method according to any one of claims 1 to 17, or to implement the method according to any one of claims 18 to 34.

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