CN115776728A

CN115776728A - Wireless communication method and communication device

Info

Publication number: CN115776728A
Application number: CN202111040656.2A
Authority: CN
Inventors: 薛松岩; 丁梦颖; 彭金磷; 王瑞
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2023-03-10
Also published as: WO2023030514A1

Abstract

The application provides a wireless communication method and a communication device, comprising the following steps: the terminal equipment sends first information to the network equipment, wherein the first information comprises indication information of m frequency band combinations; the terminal equipment receives second information from the network equipment, wherein the second information comprises frequency domain resources and radio frequency parameters corresponding to each frequency band combination in the n frequency band combinations; the terminal device communicates in a first frequency band combination of n frequency band combinations based on the second information, wherein the n frequency band combinations belong to m frequency band combinations, m is greater than or equal to n, and n is greater than or equal to 2,m and n are positive integers. The wireless communication method can flexibly configure frequency domain resources, and improve uplink and downlink transmission capacity and user experience rate.

Description

Wireless communication method and communication device

Technical Field

The present application relates to the field of communications, and more particularly, to a wireless communication method and a communication apparatus.

Background

To meet the increasing network capacity demands, increasing the system transmission bandwidth is a straightforward and efficient approach. Currently, a Carrier Aggregation (CA) technology is introduced to implement multi-spectrum resource aggregation to support a larger transmission bandwidth, improve system throughput, and improve user experience. For example, a user with two radio frequency transmission links supports CA capability of at most two uplink carriers, and different carrier combinations need to be reconfigured using Radio Resource Control (RRC) signaling.

Therefore, how to enable flexible configuration of frequency domain resources and improve uplink and downlink transmission capacity and user experience rate is an urgent problem to be solved.

Disclosure of Invention

The application provides a wireless communication method and a communication device, which can flexibly configure frequency domain resources and improve uplink and downlink transmission capacity and user experience rate.

In a first aspect, a wireless communication method is provided, which may be performed by a terminal device, or may also be performed by a chip or a circuit for a terminal device, and this is not limited in this application. For convenience of description, the following description will be made taking an example performed by a terminal device.

The method comprises the following steps: the terminal equipment sends first information to the network equipment, wherein the first information comprises indication information of m frequency band combinations; the terminal equipment receives second information from the network equipment, wherein the second information comprises frequency domain resources and radio frequency parameters corresponding to each frequency band combination in n frequency band combinations, the n frequency band combinations belong to m frequency band combinations, m is greater than or equal to n, and n is greater than or equal to 2,m and n is a positive integer; the terminal device communicates in a first frequency band combination of the n frequency band combinations based on the second information.

According to the scheme provided by the application, the network device can perform time-frequency resource configuration on the terminal device according to a plurality of frequency Band Combinations (BC) reported by the terminal device, that is, time-frequency resources corresponding to the plurality of frequency band combinations. Meanwhile, the terminal device can communicate on the configured frequency band combination based on the second information. The implementation mode can enable the frequency domain resources to be flexibly configured, and improves the transmission capability and the user experience rate of the user.

For example, the implementation manner is to take interaction between the terminal device and the network device as an example, and details that the network device configures, according to m frequency band combinations reported by the terminal device, time-frequency domain resources corresponding to the n frequency band combinations, for resource transmission between the network device and the terminal device.

Optionally, the technical solution of the present application is also applicable to a Sidelink (SL) scenario, or to resource configuration and scheduling between a source base station and a target base station. The SL scene includes, among other things, vehicle to anything (V2X). V2X further includes vehicle to vehicle (V2V), vehicle to pedestrian (V2P), vehicle to infrastructure (V2I), vehicle to network (V2N), and the like. Except for V2N, SL communication is performed on a direct communication interface between the terminal device and the terminal device, for example, a PC5 interface.

In a possible implementation manner, the terminal device may report m frequency band combinations BC for enabling the terminal device to implement flexible switching on multiple groups of frequency domain resources, where m is greater than or equal to 2. For example, the terminal device sends three frequency band combinations BC to the network device, which are respectively band1+ band2, band 3+ band 4, and band5+ band6, for indicating that the terminal device supports concurrent or selective transmission on the frequency domain resources corresponding to the three frequency band combinations.

For example, the network device may configure, through RRC signaling, the time-frequency domain resource corresponding to the n frequency band combinations for the terminal device. For example, the network device configures the time-frequency domain resources corresponding to the n frequency band combinations for the m frequency band combinations reported by the terminal device. Wherein, m is more than or equal to n is more than or equal to 2,n frequency band combinations which are subsets of the m frequency band combinations.

That is, the network device may configure time-frequency domain resources, i.e., bands 1 to 6, corresponding to all frequency band combinations for the terminal device. Or, the network device may also configure, according to the hardware capabilities of the terminal device and the network device, time-frequency domain resources, such as band1 to band 4, corresponding to the two frequency band combinations for the terminal device, which is not specifically limited in this application.

Optionally, any two BC may be completely the same for the three frequency band combinations BC reported by the terminal device. For example, the first BC is band1+ band2, the second BC is band 3+ band 4, and the third BC is band1+ band2, then the network equipment may configure frequency domain resources corresponding to band1 to band 4 for the terminal equipment. In this embodiment of the present application, it needs to be ensured that frequency band resources corresponding to two BC in m BC reported by the terminal device are different.

It should be noted that, in the process of reporting the capability of the terminal device, each BandCombination in the BandCombination list not only includes a specific operating frequency band, but also includes a feature set featurecombination parameter for indicating the radio frequency indicator corresponding to the uplink and downlink data transmission performed by the terminal device on the current BandCombination, that is, there is a one-to-one correspondence between BandCombination and featurecombination.

Illustratively, the same frequency domain resources may be contained within different BCs. For example, BC 1 corresponds to band1+ band2, BC 2 corresponds to band1+ band3, etc., which is not specifically limited in this application.

Alternatively, the same frequency domain resources may be included in one BC, i.e. one band is included in one BC, for example, in the case of band1, which corresponds to intra-band CA for intra-band contiguous or non-contiguous carrier aggregation. For example, band1+ band2 corresponds to out-of-band non-contiguous carrier aggregation inter-band CA.

It should be understood that, in the embodiment of the present application, all the BCs reported by the terminal device are currently defined BC combinations.

It should be noted that the multiple frequency band combinations BC reported by the terminal device have a priority or an internal sequence relationship, which is specifically represented that multiple bandcombinations in the BandCombinationList reported by the terminal device have an internal sequence relationship from the first to the last.

In another possible implementation manner, the terminal device may report a frequency band combination BC, where the BC includes m frequency band pairs, and is used to enable the terminal device to implement flexible switching on multiple groups of frequency domain resources, where m is greater than or equal to 2. For example, one BC reported by the terminal device includes 3 band pairs. Wherein, band pair 1 corresponds to band1+ band2, band pair2 corresponds to band 3+ band 4, and band pair 3 corresponds to band5+ band 6. That is, the terminal device supports transmission on the frequency domain resources corresponding to band1 to band 6.

Illustratively, the network device may perform configuration of time-frequency domain resources corresponding to n band pairs on the terminal device through RRC signaling, where m is greater than or equal to n is greater than or equal to 2, that is, n band pairs are subsets of m band pairs. That is, the network device may configure, for the terminal device, time-frequency domain resources corresponding to all band pairs, that is, bands 1 to 6. Or, the network device may also configure, according to the terminal device and the hardware capability of the network device, time-frequency domain resources corresponding to the two band pairs, for example, bands 1 to 4, for the terminal device, which is not specifically limited in this application.

Optionally, the band pair is combined for three frequency bands reported by the terminal device, where any two band pairs may be completely the same. For example, the first band pair is band1+ band2, the second band pair is band 3+ band 4, and the third band pair is band1+ band2, so that the network device may configure frequency domain resources corresponding to band1 to band 4 for the terminal device. In the embodiment of the present application, it needs to be ensured that frequency band resources corresponding to two band pairs are different among m band pairs reported by a terminal device.

It should be noted that, in the process of reporting the capability of the terminal device, the number of band pairs in the same BC is greater than or equal to 2. Each band pair in the same BC not only includes a specific working frequency band, but also includes a heartbeat synchronization parameter for indicating a radio frequency index corresponding to uplink and downlink data transmission performed by the terminal device on the current band pair, that is, there is a one-to-one correspondence between the band pair and the heartbeat synchronization.

Illustratively, the same frequency domain resource may be contained in different band pairs. For example, band pair 1 corresponds to band1+ band2, band pair2 corresponds to band1+ band3, etc., and the present application is not limited thereto.

Alternatively, the same frequency domain resource may be included in one band pair, i.e. one band is included in one band pair, for example, in the case of band1, which corresponds to intra-band contiguous or non-contiguous carrier aggregation intra-band CA. For example, band1+ band2 corresponds to out-of-band non-contiguous carrier aggregation inter-band CA.

It should be understood that, in the embodiment of the present application, all band pairs reported by the terminal device need to be currently defined BC combinations.

It should be noted that the band pairs in the BC have a priority or an internal sequential relationship, which is specifically represented that a plurality of band pairs in the BC reported by the terminal device have an internal sequential relationship from the first to the last.

With reference to the first aspect, in some implementations of the first aspect, the terminal device receives third information from the network device, where the third information is used to instruct the terminal device to switch to a second frequency band combination, and the second frequency band combination is one of the n frequency band combinations; and the terminal equipment is switched to the second frequency band combination according to the third information.

In this implementation manner, the terminal device may switch over the time-frequency domain resources corresponding to the configured multiple frequency band combinations, so as to enable flexible spectrum switching. The first frequency band combination and the second frequency band combination are both time-frequency domain resources configured by the network device through the RRC signaling.

Illustratively, the third information may be Downlink Control Information (DCI). The network device issues the DCI to the terminal device to instruct the terminal device to switch from the current working frequency band combination to the designated working frequency band combination.

In a possible implementation manner, the third information includes indication information of the second frequency band combination. That is, the terminal device may determine to switch to the second frequency band combination specified by the network device according to the third information. It should be noted that the second frequency band combination may be a second frequency band combination determined by the network according to the capability priority of the terminal device, that is, a suboptimal frequency band combination. For example, the network device instructs the terminal device to switch from the optimal band combination band1+ band2 to the sub-multiband combination band1+ band 3.

In this implementation manner, the network device may not carry the second frequency band combination when sending the handover signaling, which may save signaling overhead. In this case, the second band combination corresponds to the second band combination or the second best band combination. Alternatively, the second frequency band combination may also be randomly selected by the network device without priority ranking, for example, band2+ band 4. The second frequency band combination is then arbitrarily selected. The network device needs to inform the terminal device which specific second frequency band combination is when sending the frequency band combination switching indication. Alternatively, the second frequency band combination is a second received frequency band combination when the network device receives the m frequency band combinations. In this case, the second band combination may be considered to correspond to the second band combination. In short, the second frequency band combination may be determined according to the hardware capabilities of the terminal device and the network device, and the transmission performance of the current network system. This is not a particular limitation of the present application.

For example, the terminal device switches to the second frequency band combination specified by the network device, and may switch from the first frequency band combination to the second frequency band combination. For example, switch from band1+ band2 corresponding to the first frequency band combination to band 3+ band 4 corresponding to the second frequency band combination. Since the network device configures n frequency band combinations BC for the terminal device, that is, the terminal device can switch back and forth arbitrarily within the n BCs. Therefore, the terminal device can also switch from the first frequency band combination to the third frequency band combination, and then switch to the second frequency band combination or switch to the first frequency band combination according to the scheduling requirement. This is not a particular limitation of the present application.

With reference to the first aspect, in some implementations of the first aspect, the terminal device receives indication information from the network device, where the indication information is used to indicate that the initial operating frequency band combination of the terminal device is the first frequency band combination.

In this implementation manner, the terminal device may determine, according to the received indication information, that the frequency band combination initially performing transmission resource is the first frequency band combination.

Illustratively, the network device may notify the terminal device that the initial operating frequency is the first frequency band combination through RRC signaling.

The initial working frequency band combination refers to a first working frequency band frequency combination for transmitting resources after the terminal device is configured with multiple groups of time-frequency domain resources. The first frequency band combination may be any one of n frequency band combinations configured by the network device, or an optimal frequency band combination determined by the network device according to the capability of the terminal device, or a first frequency band combination in an order relation in which the terminal device reports m frequency band combinations BC, or the network device configures one BC for the terminal device as an initial working frequency band according to the current system load or the use condition of time-frequency resources, and so on. This is not a particular limitation of the present application.

For example, the three frequency band combinations BC reported by the terminal device are respectively band1+ band2, band1+ band3, and band2+ band 4, which indicates that the terminal device supports frequency domain resources from band1 to band 4, and supports concurrent or selective transmission on the frequency domain resources corresponding to the three frequency band combinations. The optimal transceiving frequency band combination supported by the hardware capability of the terminal equipment is band1+ band2, then band1+ band3, and finally band2+ band 4. Then the network device may determine that the first frequency band combination is randomly determined, for example, band2+ band 4. Or, band1+ band2 with the optimal capability may be selected from the frequency band combinations supported by the terminal equipment. Or the network device reports the first frequency band combination in the sequence relation in the m frequency band combinations BC according to the terminal device, and so on. This is not a particular limitation of the present application.

In other words, the first frequency band combination may be the first frequency band combination determined by the network according to the capability priority of the terminal device, that is, the optimal frequency band combination. At this time, the first frequency band combination corresponds to the first frequency band combination or the optimal frequency band combination. Alternatively, the first frequency band combination may be randomly selected by the network device without priority ranking. The first frequency band combination is then arbitrarily selected. Alternatively, the first frequency band combination is a first received frequency band combination when the network device receives the m frequency band combinations. In this case, the first band combination may be considered to correspond to the first band combination. In summary, the first frequency band combination may be determined according to the hardware capabilities of the terminal device and the network device, and the transmission performance of the current network system. This is not a particular limitation of the present application.

One possible implementation manner is that a frequency band combination BC can be reported for a terminal device, where the BC includes a plurality of frequency band pairs, and is used to enable the terminal device to implement flexible switching on a plurality of groups of frequency domain resources.

The network equipment can select a first band pair as an initial working frequency band according to the sequence relation in a plurality of band pairs reported by the terminal equipment; or the network equipment selects a band pair from the band pairs reported by the terminal equipment as an initial working frequency band; or the network device configures a band pair as an initial working frequency band for the terminal device according to the current system load or the time-frequency resource use condition, and the like. This is not a particular limitation of the present application.

With reference to the first aspect, in some implementations of the first aspect, the terminal device receives capability request information from the network device, where the capability request information is used to request a frequency band combination supported by the terminal device; and the terminal equipment sends the first information to the network equipment according to the capability request information.

For example, when the network device needs to acquire the information of the wireless access capability of the terminal device, the network device may initiate a capability query request to the terminal device in the RRC _ CONNECTED state through the ue capability inquiry signaling. Correspondingly, after receiving the capability request information from the network device, the terminal device reports the supported multiple frequency band combinations BC to the network device through the UECapabilityInformation signaling, so as to indicate the carrier aggregation capability of the terminal device. The signaling of the reporting capability of the terminal device includes a BandCombination item, which includes m frequency band combinations BC supported by the terminal device, and is used to indicate the terminal device to support concurrence or selective transmission on multiple frequency domain resources in the reported BC.

For example, when the terminal device supports concurrent or selective transmission on the frequency domain resources corresponding to the two frequency band combinations, two frequency band combinations BC are reported to the network device at the same time, where one BC may include band1+ band2, and the other BC may include band 3+ band 4. Namely, the terminal equipment supports concurrent or selective transmission on band1+ band2 and band 3+ band 4 frequency bands.

In a second aspect, a wireless communication method is provided, which may be performed by a network device, or may also be performed by a chip or a circuit for the network device, and this is not limited in this application. For convenience of description, the following description will be made with an example performed by a network device.

The method comprises the following steps: the network equipment receives first information from the terminal equipment, wherein the first information comprises indication information of m frequency band combinations; the network equipment determines second information according to the first information, wherein the second information comprises frequency domain resources and radio frequency parameters corresponding to each frequency band combination in n frequency band combinations, the n frequency band combinations belong to m frequency band combinations, m is larger than or equal to n, and n is larger than or equal to 2,m and n is a positive integer; the network device sends second information to the terminal device to perform communication in a first frequency band combination of the n frequency band combinations based on the second information.

According to the scheme provided by the application, the network equipment can perform time-frequency resource configuration on the terminal equipment according to the multiple frequency band combinations BC reported by the terminal equipment, namely, the time-frequency resources corresponding to the multiple frequency band combinations. Meanwhile, the terminal device may communicate on the configured one frequency band combination based on the second information. The implementation mode can enable the frequency domain resources to be flexibly configured, and improves the transmission capacity and the user experience rate of a user.

Optionally, the technical solution of the present application is also applicable to a sidelink SL scenario, or to resource allocation and scheduling between a source base station and a target base station. Wherein the SL scene includes vehicle-to-anything communication V2X. V2X further includes vehicle-to-vehicle communication V2V, vehicle-to-pedestrian communication V2P, vehicle-to-infrastructure communication V2I, vehicle-to-network communication V2N, and the like. The communication is SL communication between the terminal device and a direct communication interface between the terminal devices, such as a PC5 interface, except V2N.

In a possible implementation manner, the terminal device may report m frequency band combinations BC for enabling the terminal device to implement flexible switching on multiple groups of frequency domain resources, where m is greater than or equal to 2. For example, when the terminal device sends three frequency band combinations BC to the network device, which are respectively band1+ band2, band 3+ band 4, and band5+ band6, the terminal device is used to indicate that the terminal device supports concurrent or selective transmission on the frequency domain resources corresponding to the three frequency band combinations.

For example, the network device may configure, through RRC signaling, the time-frequency domain resource corresponding to the n frequency band combinations for the terminal device. For example, the network device configures time-frequency domain resources corresponding to the n frequency band combinations for the m frequency band combinations reported by the terminal device. Wherein, m is more than or equal to n is more than or equal to 2,n frequency band combinations which are subsets of the m frequency band combinations. That is, the network device may configure time-frequency domain resources, i.e., bands 1 to 6, corresponding to all frequency band combinations for the terminal device. Or, the network device may also configure, according to the hardware capabilities of the terminal device and the network device, time-frequency domain resources, such as band1 to band 4, corresponding to the two frequency band combinations for the terminal device, which is not specifically limited in this application.

Optionally, any two BC may be completely the same for the three frequency band combinations BC reported by the terminal device. For example, the first BC is band1+ band2, the second BC is band 3+ band 4, and the third BC is band1+ band2, then the network device may configure frequency domain resources corresponding to band1 to band 4 for the terminal device. In the embodiment of the present application, it needs to be ensured that frequency band resources corresponding to two BC in m BC reported by the terminal device are different.

It should be noted that, in the process of reporting the capability of the terminal device, each BandCombination in the BandCombination list not only includes a specific operating frequency band, but also includes a featurestopunction parameter for indicating the radio frequency index corresponding to the uplink and downlink data transmission performed by the terminal device on the current BandCombination, that is, there is a one-to-one correspondence between BandCombination and featurestopunction.

Illustratively, the same frequency domain resources may be contained within different BCs. For example, BC 1 corresponds to band1+ band2, BC 2 corresponds to band1+ band3, etc., which is not specifically limited in the present application.

Illustratively, the network device may perform configuration of time-frequency domain resources corresponding to m band pairs on the terminal device through RRC signaling, where m is greater than or equal to n is greater than or equal to 2, that is, n band pairs are subsets of the m band pairs. That is, the network device may configure, for the terminal device, time-frequency domain resources corresponding to all band pairs, that is, bands 1 to 6. Or, the network device may also configure, according to the hardware capabilities of the terminal device and the network device, time-frequency domain resources, such as band1 to band 4, corresponding to the two band pairs for the terminal device, which is not specifically limited in this application.

Optionally, the band pair is combined for three frequency bands reported by the terminal device, where any two band pairs may be completely the same. For example, the first band pair is band1+ band2, the second band pair is band 3+ band 4, and the third band pair is band1+ band2, so that the network device may configure frequency domain resources corresponding to band1 to band 4 for the terminal device. In the embodiment of the present application, it needs to be ensured that frequency band resources corresponding to two band pairs are different in m band pairs reported by a terminal device.

It should be noted that, in the reporting process of the terminal device capability, the number of band pairs in the same BC is greater than or equal to 2. Each band pair in the same BC not only includes a specific working frequency band, but also includes a feature communication parameter for indicating a radio frequency index corresponding to uplink and downlink data transmission performed by the terminal device on the current band pair, that is, there is a one-to-one correspondence between the band pair and the feature communication.

Illustratively, the same frequency domain resource may be contained in different band pairs. For example, band pair 1 corresponds to band1+ band2, band pair2 corresponds to band1+ band3, etc., and this is not specifically limited in this application.

With reference to the second aspect, in some implementations of the second aspect, the network device sends third information to the terminal device, where the third information is used to instruct the terminal device to switch to the second frequency band combination, and the second frequency band combination is one of the n frequency band combinations.

Illustratively, the third information may be downlink control information DCI. The network device issues the DCI to the terminal device to instruct the terminal device to switch from the current working frequency band combination to the designated working frequency band combination.

In a possible implementation manner, the third information includes indication information of the second frequency band combination. That is, the terminal device may determine to switch to the second frequency band combination specified by the network device according to the third information.

It should be noted that the second frequency band combination may be a second frequency band combination determined by the network according to the capability priority of the terminal device, that is, a suboptimal frequency band combination. For example, the network device instructs the terminal device to switch from the optimal band combination band1+ band2 to the sub-multiband combination band1+ band 3.

In this implementation manner, the network device may not carry the second frequency band combination when sending the handover signaling, which may save signaling overhead. At this time, the second band combination corresponds to the second band combination or the suboptimal band combination. Alternatively, the second frequency band combination may also be randomly selected by the network device without priority ranking, for example, band2+ band 4. The second frequency band combination is then arbitrarily selected. The network device needs to inform the terminal device which specific second frequency band combination is when sending the frequency band combination switching indication. Alternatively, the second frequency band combination is a second received frequency band combination when the network device receives the m frequency band combinations. In this case, the second band combination may be considered to correspond to the second band combination.

In summary, the second frequency band combination may be determined according to the hardware capabilities of the terminal device and the network device, and the transmission performance of the current network system. This is not a specific limitation in the present application.

For example, the terminal device may switch to the second frequency band combination specified by the network device from the first frequency band combination to the second frequency band combination. For example, switching from band1+ band2 corresponding to the first frequency band combination to band 3+ band 4 corresponding to the second frequency band combination. Since the network device configures n frequency band combinations BC for the terminal device, that is, the terminal device can switch back and forth arbitrarily within the n BCs. Therefore, the terminal device can also be switched from the first frequency band combination to the third frequency band combination, and then switched to the second frequency band combination according to the scheduling requirement, or switched to the first frequency band combination. This is not a specific limitation in the present application.

With reference to the second aspect, in some implementation manners of the second aspect, the network device sends indication information to the terminal device, where the indication information is used to indicate that the initial operating frequency band combination of the terminal device is the first frequency band combination.

The initial working frequency band combination refers to a first working frequency band frequency combination used for transmitting resources after the terminal device is configured with multiple groups of time-frequency domain resources. The first frequency band combination may be any one of n frequency band combinations configured by the network device, or an optimal frequency band combination determined by the network device according to the capability of the terminal device, or a first frequency band combination in an order relation in which the terminal device reports m frequency band combinations BC, or the network device configures one BC for the terminal device as an initial working frequency band according to the current system load or the use condition of time-frequency resources, and so on. This is not a particular limitation of the present application.

For example, the three frequency band combinations BC reported by the terminal device are respectively band1+ band2, band1+ band3, and band2+ band 4, which indicates that the terminal device supports frequency domain resources in band1 to band 4, and supports concurrent or selective transmission on the frequency domain resources corresponding to the three frequency band combinations. The optimal transceiving frequency band combination supported by the hardware capability of the terminal equipment is band1+ band2, then band1+ band3, and finally band2+ band 4. Then the network device may determine that the first frequency band combination is randomly determined, for example, band2+ band 4. Or, band1+ band2 with the optimal capability may be selected from the frequency band combinations supported by the terminal equipment. Or the network device reports the first frequency band combination in the sequence relation in the m frequency band combinations BC according to the terminal device, and so on. This is not a particular limitation of the present application.

The network equipment can select a first band pair as an initial working frequency band according to the sequence relation in the band pairs reported by the terminal equipment; or the network equipment selects a band pair from the band pairs reported by the terminal equipment as an initial working frequency band; or the network device configures a band pair as an initial working frequency band for the terminal device according to the current system load or the time-frequency resource use condition, and the like. This is not a specific limitation in the present application.

With reference to the second aspect, in some implementations of the second aspect, the network device sends capability request information to the terminal device, where the capability request information is used to request a frequency band combination supported by the terminal device.

For example, when the network device needs to acquire the information of the radio access capability of the terminal device, the network device may initiate a capability query request to the terminal device in a radio resource control connection RRC _ CONNECTED state through uecapabilitynquiry signaling.

Correspondingly, after receiving the capability request information from the network device, the terminal device reports the supported multiple frequency band combinations BC to the network device through the UECapabilityInformation signaling, so as to indicate the carrier aggregation capability of the terminal device. The signaling of the reporting capability of the terminal device includes a BandCombination item, which includes m frequency band combinations BC supported by the terminal device, and is used to indicate the terminal device to support concurrence or selective transmission on multiple frequency domain resources in the reported BC.

With reference to the first aspect or the second aspect, in some implementations, the first frequency band combination is a first one of n frequency band combinations; or the first band combination is any one of the n band combinations.

Optionally, the first frequency band combination is determined by the network device according to the current system resource allocation condition.

The current specific time point, the system resource, and the like may include the current number of network access users, available time-frequency resources, or network power consumption.

In a possible implementation manner, the first frequency band combination may be any one of n frequency band combinations configured by the network device, or an optimal frequency band combination determined by the network device according to the capability of the terminal device, or a first frequency band combination in a sequential relationship in which the terminal device reports m frequency band combinations BC, or the network device configures one BC as an initial working frequency band for the terminal device according to the current system load or the use condition of time-frequency resources, and so on. This is not a particular limitation of the present application.

In another possible implementation manner, the first frequency band combination may be that the network device selects a first band pair as an initial working frequency band according to an inherent sequential relationship among a plurality of band pairs reported by the terminal device; or the network equipment selects a band pair from the band pairs reported by the terminal equipment as an initial working frequency band; or the network device configures a band pair as an initial working frequency band for the terminal device according to the current system load or the time-frequency resource use condition, and the like. This is not a particular limitation of the present application.

With reference to the first aspect or the second aspect, in some implementations, each of the n frequency band combinations is used to indicate an uplink transmission capability or a downlink transmission capability of the terminal device.

In this implementation manner, the terminal device may flexibly report one or more frequency band combinations UL BC for indicating the uplink transmission capability of the terminal device or one or more frequency band combinations DL BC for indicating the downlink transmission capability, and the network device configures the terminal device according to at most one DL BC and/or at most one UL BC in the UL BC and the DL BC reported by the terminal device. And after receiving the configuration information of the network equipment, the terminal equipment transmits data according to the configuration information.

It should be noted that DL BC and UL BC are respectively used for downlink and uplink transmission capability reporting, and the band number in each DL BC or UL BC is greater than or equal to 1. The terminal device may report multiple DL BC or UL BC, or may not report DL BC or UL BC, for example, the terminal device may report one or multiple DL BC, and may not report UL BC, or vice versa.

With reference to the first or second aspect, in certain implementations, the radio frequency parameters include one or more of the following parameters: the method comprises the steps of maximum transmitting power, minimum transmitting power, occupied bandwidth, reference sensitivity, subcarrier spacing and switching time delay, wherein the switching time delay is the time used by terminal equipment for switching among a plurality of frequency band combinations.

The maximum transmission power refers to the maximum uplink transmission power that can be used by the terminal device. The minimum transmission power refers to the minimum uplink transmission power required to be used by the terminal device. The occupied bandwidth refers to the transmission bandwidth of the terminal device on the designated frequency band. The reference sensitivity refers to the lowest power at which the terminal device can reliably receive data. The subcarrier spacing refers to a small segment of frequency domain resource which can be modulated independently, and the subcarrier spacing is the width of one subcarrier in the frequency domain. New Radio (NR) typically supports 15KHz, 30KHz, 60KHz, 120KHz, 240KHz, etc.

In a third aspect, a wireless communication apparatus is provided, including: the receiving and sending unit is used for the terminal equipment to send first information to the network equipment, wherein the first information comprises the indication information of the m frequency band combinations; the terminal equipment receives second information from the network equipment, wherein the second information comprises frequency domain resources and radio frequency parameters corresponding to each frequency band combination in n frequency band combinations, the n frequency band combinations belong to m frequency band combinations, m is greater than or equal to n, and n is greater than or equal to 2,m and n is a positive integer; the terminal device communicates in a first frequency band combination of the n frequency band combinations based on the second information.

For example, the implementation manner is to take interaction between the terminal device and the network device as an example, and details that the network device configures, according to the m frequency band combinations reported by the terminal device, time-frequency domain resources corresponding to the n frequency band combinations, for resource transmission between the network device and the terminal device.

Optionally, the technical solution of the present application is also applicable to a sidelink SL scenario, or to resource configuration and scheduling between a source base station and a target base station. Wherein the SL scene includes vehicle-to-anything communication V2X. V2X further includes vehicle-to-vehicle communication V2V, vehicle-to-pedestrian communication V2P, vehicle-to-infrastructure communication V2I, vehicle-to-network communication V2N, and the like. The communication is SL communication between the terminal device and a direct communication interface between the terminal devices, such as a PC5 interface, except V2N.

For example, the network device may configure, through RRC signaling, the time-frequency domain resource corresponding to the n frequency band combinations for the terminal device. For example, the network device configures time-frequency domain resources corresponding to the n frequency band combinations for the m frequency band combinations reported by the terminal device. Wherein, m is more than or equal to n is more than or equal to 2,n frequency band combinations which are subsets of the m frequency band combinations.

That is to say, the network device may configure time-frequency domain resources, i.e., band1 to band6, corresponding to all frequency band combinations for the terminal device. Or, the network device may also configure, according to the hardware capabilities of the terminal device and the network device, time-frequency domain resources, such as band1 to band 4, corresponding to the two frequency band combinations for the terminal device, which is not specifically limited in this application.

Optionally, any two BC may be completely the same for the three frequency band combinations BC reported by the terminal device. For example, the first BC is band1+ band2, the second BC is band 3+ band 4, and the third BC is band1+ band2, then the network device may configure frequency domain resources corresponding to band1 to band 4 for the terminal device. In this embodiment of the present application, it needs to be ensured that frequency band resources corresponding to two BC in m BC reported by the terminal device are different.

In another possible implementation manner, the terminal device may report a frequency band combination BC, where the BC includes m frequency band pairs, and is used to enable the terminal device to implement flexible switching on multiple groups of frequency domain resources, where m is greater than or equal to 2. For example, one BC reported by the terminal device includes 3 band pairs. Wherein, band pair 1 corresponds to band1+ band2, band pair2 corresponds to band 3+ band 4, and band pair 3 corresponds to band5+ band 6. I.e. the terminal equipment supports transmission on the frequency domain resources corresponding to band1 to band 6.

Optionally, the band pairs are combined for three frequency bands reported by the terminal device, where any two band pairs may be completely the same. For example, the first band pair is band1+ band2, the second band pair is band 3+ band 4, and the third band pair is band1+ band2, so that the network device may configure frequency domain resources corresponding to band1 to band 4 for the terminal device. In the embodiment of the present application, it needs to be ensured that frequency band resources corresponding to two band pairs are different in m band pairs reported by a terminal device.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is further configured to receive, by the terminal device, third information from the network device, where the third information is used to instruct the terminal device to switch to a second frequency band combination, and the second frequency band combination is one of n frequency band combinations; the apparatus further includes a processing unit, configured to switch to the second frequency band combination according to the third information.

In this implementation manner, the network device may not carry the second frequency band combination when sending the handover signaling, which may save signaling overhead. At this time, the second band combination corresponds to the second band combination or the suboptimal band combination. Alternatively, the second frequency band combination may also be randomly selected by the network device without priority ranking, for example, band2+ band 4. The second band combination is then arbitrarily selected. The network device needs to inform the terminal device which specific second frequency band combination is when sending the frequency band combination switching indication. Alternatively, the second frequency band combination is a second received frequency band combination when the network device receives the m frequency band combinations. In this case, the second band combination may be considered to correspond to the second band combination.

In short, the second frequency band combination may be determined according to the hardware capabilities of the terminal device and the network device, and the transmission performance of the current network system. This is not a particular limitation of the present application.

For example, the terminal device switches to the second frequency band combination specified by the network device, and may switch from the first frequency band combination to the second frequency band combination. For example, switching from band1+ band2 corresponding to the first frequency band combination to band 3+ band 4 corresponding to the second frequency band combination. Since the network device configures n frequency band combinations BC for the terminal device, that is, the terminal device can switch back and forth arbitrarily within the n BCs. Therefore, the terminal device can also switch from the first frequency band combination to the third frequency band combination, and then switch to the second frequency band combination or switch to the first frequency band combination according to the scheduling requirement. This is not a particular limitation of the present application.

With reference to the third aspect, in certain implementation manners of the third aspect, the transceiver unit is further configured to receive, by the terminal device, indication information from the network device, where the indication information is used to indicate that the initial operating frequency band combination of the terminal device is the first frequency band combination.

In other words, the first frequency band combination may be the first frequency band combination determined by the network according to the capability priority of the terminal device, that is, the optimal frequency band combination. At this time, the first frequency band combination corresponds to the first frequency band combination or the optimal frequency band combination. Alternatively, the first frequency band combination may be randomly selected by the network device without priority ranking. The first frequency band combination is then arbitrarily selected. Still alternatively, the first frequency band combination is a first received frequency band combination when the network device receives the m frequency band combinations. In this case, the first band combination may be considered to correspond to the first band combination. In summary, the first frequency band combination may be determined according to the hardware capabilities of the terminal device and the network device, and the transmission performance of the current network system. This is not a particular limitation of the present application.

One possible implementation manner is that a frequency band combination BC can be reported for a terminal device, where the BC includes multiple frequency band pairs, and is used to enable the terminal device to implement flexible switching on multiple sets of frequency domain resources.

The network equipment can select a first band pair as an initial working frequency band according to the sequence relation in the band pairs reported by the terminal equipment; or the network equipment selects a band pair from the band pairs reported by the terminal equipment as an initial working frequency band; or the network device configures a band pair as an initial working frequency band for the terminal device according to the current system load or the time-frequency resource use condition, and the like. This is not a particular limitation of the present application.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is further configured to receive, by the terminal device, capability request information from the network device, where the capability request information is used to request a frequency band combination supported by the terminal device; and the terminal equipment sends the first information to the network equipment according to the capability request information.

For example, when the network device needs to acquire the information of the radio access capability of the terminal device, the network device may initiate a capability query request to the terminal device in a radio resource control connection RRC _ CONNECTED state through uecapabilitynquiry signaling. Correspondingly, after receiving the capability request information from the network device, the terminal device reports the supported multiple frequency band combinations BC to the network device through the UECapabilityInformation signaling, so as to indicate the carrier aggregation capability of the terminal device. The signaling of the reporting capability of the terminal device includes a BandCombination entry, which includes m frequency band combinations BC supported by the terminal device, and is used to indicate the terminal device to support concurrence or selective transmission on multiple frequency domain resources in the reported BC.

For example, when the terminal device supports concurrent or selective transmission on the frequency domain resources corresponding to the two frequency band combinations, two frequency band combinations BC are reported to the network device at the same time, where one BC may include band1+ band2, and the other BC may include band 3+ band 4. That is, the terminal equipment supports concurrent or selective transmission on band1+ band2 and band 3+ band 4 frequency bands.

In a fourth aspect, a wireless communications apparatus is provided that includes: the receiving and sending unit is used for the network equipment to receive first information from the terminal equipment, wherein the first information comprises indication information of m frequency band combinations; the processing unit is used for determining second information by the network equipment according to the first information, wherein the second information comprises frequency domain resources and radio frequency parameters corresponding to each frequency band combination in n frequency band combinations, the n frequency band combinations belong to m frequency band combinations, m is greater than or equal to n, and n is greater than or equal to 2,m and n is a positive integer; and the transceiving unit is further used for the network device to send second information to the terminal device so as to perform communication in a first frequency band combination of the n frequency band combinations based on the second information.

For example, the network device may configure, through RRC signaling, the time-frequency domain resource corresponding to the n frequency band combinations for the terminal device. For example, the network device configures time-frequency domain resources corresponding to the n frequency band combinations for the m frequency band combinations reported by the terminal device. Wherein, m is more than or equal to n is more than or equal to 2,n frequency band combinations which are subsets of the m frequency band combinations. That is to say, the network device may configure time-frequency domain resources, i.e., band1 to band6, corresponding to all frequency band combinations for the terminal device. Or, the network device may also configure, according to the hardware capabilities of the terminal device and the network device, time-frequency domain resources, such as band1 to band 4, corresponding to the two frequency band combinations for the terminal device, which is not specifically limited in this application.

It should be noted that, the multiple frequency band combinations BC reported by the terminal device have priorities or an inherent order relationship, specifically, multiple bandcombinations in the BandCombination list reported by the terminal device have an inherent order relationship from the first to the last.

Illustratively, the network device may perform configuration of time-frequency domain resources corresponding to multiple band pairs on the terminal device through RRC signaling, where m is greater than or equal to n is greater than or equal to 2, that is, n band pairs are subsets of m band pairs. That is, the network device may configure time-frequency domain resources corresponding to all band pairs, i.e., bands 1 to 6, for the terminal device. Or, the network device may also configure, according to the terminal device and the hardware capability of the network device, time-frequency domain resources corresponding to the two band pairs, for example, bands 1 to 4, for the terminal device, which is not specifically limited in this application.

It should be noted that, in the reporting process of the terminal device capability, the number of band pairs in the same BC is greater than or equal to 2. Each band pair in the same BC not only includes a specific working frequency band, but also includes a heartbeat synchronization parameter for indicating a radio frequency index corresponding to uplink and downlink data transmission performed by the terminal device on the current band pair, that is, there is a one-to-one correspondence between the band pair and the heartbeat synchronization.

Illustratively, the same frequency domain resource may be contained in different band pairs. For example, band pair 1 corresponds to band1+ band2, band pair2 corresponds to band1+ band3, etc., and this application is not limited in this respect.

Alternatively, one band pair may include the same frequency domain resources, that is, one band is included in one band pair, for example, in the case of band1, which corresponds to intra-band CA for intra-band contiguous or non-contiguous carrier aggregation. For example, band1+ band2 corresponds to out-of-band non-contiguous carrier aggregation inter-band CA.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the transceiver unit is further configured to send, by the network device, third information to the terminal device, where the third information is used to instruct the terminal device to switch to a second frequency band combination, and the second frequency band combination is one of the n frequency band combinations.

In this implementation, the network device may not carry the second frequency band combination when sending the handover signaling, which may save signaling overhead. At this time, the second band combination corresponds to the second band combination or the suboptimal band combination. Alternatively, the second frequency band combination may also be randomly selected by the network device without priority ranking, for example, band2+ band 4. The second band combination is then arbitrarily selected. The network device needs to inform the terminal device which specific second frequency band combination is when sending the frequency band combination switching indication. Alternatively, the second frequency band combination is a second received frequency band combination when the network device receives the m frequency band combinations. In this case, the second band combination may be considered to correspond to the second band combination. In summary, the second frequency band combination may be determined according to the hardware capabilities of the terminal device and the network device, and the transmission performance of the current network system. This is not a particular limitation of the present application.

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the transceiver unit is further configured to send, by the network device, indication information to the terminal device, where the indication information is used to indicate that the initial operating frequency band combination of the terminal device is the first frequency band combination.

Illustratively, the network device may notify the terminal device through RRC signaling that the initial operating frequency is the first frequency band combination.

For example, the three frequency band combinations BC reported by the terminal device are respectively band1+ band2, band1+ band3, and band2+ band 4, which indicates that the terminal device supports frequency domain resources from band1 to band 4, and supports concurrent or selective transmission on the frequency domain resources corresponding to the three frequency band combinations. The optimal transceiving frequency band combination supported by the hardware capability of the terminal equipment is band1+ band2, band1+ band3, and band2+ band 4. Then the network device may determine that the first frequency band combination is randomly determined, for example, band2+ band 4. Or, band1+ band2 with the optimal capability may be selected from the frequency band combinations supported by the terminal equipment. Or the network device reports the first frequency band combination in the sequence relation in the m frequency band combinations BC according to the terminal device, and so on. This is not a particular limitation of the present application.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to send, by the network device, capability request information to the terminal device, where the capability request information is used to request a frequency band combination supported by the terminal device.

With reference to the third aspect or the fourth aspect, in some implementations, the first frequency band combination is a first one of n frequency band combinations; or the first band combination is any one of the n band combinations.

The system resource may include the number of current network access users, available time-frequency resources, or network power consumption.

A possible implementation manner is that the first frequency band combination may be any one of n frequency band combinations configured by the network device, or an optimal frequency band combination determined by the network device according to the capability of the terminal device, or a first frequency band combination in an order relationship in which the terminal device reports m frequency band combinations BC, or the network device configures one BC for the terminal device as an initial working frequency band according to the current system load or the use condition of time-frequency resources, and so on. This is not a specific limitation in the present application.

With reference to the third aspect or the fourth aspect, in some implementations, each of the n frequency band combinations is used to indicate an uplink transmission capability or a downlink transmission capability of the terminal device.

In this implementation manner, the terminal device may flexibly report one or more frequency band combinations UL BC used for indicating the uplink transmission capability of the terminal device or one or more frequency band combinations DL BC used for indicating the downlink transmission capability, and the network device configures the terminal device according to at most one DL BC and/or at most one UL BC in the UL BC and the DL BC reported by the terminal device. And after receiving the configuration information of the network equipment, the terminal equipment transmits data according to the configuration information.

With reference to the third or fourth aspect, in certain implementations, the radio frequency parameters include one or more of the following parameters: the method comprises the steps of maximum transmitting power, minimum transmitting power, occupied bandwidth, reference sensitivity, subcarrier spacing and switching time delay, wherein the switching time delay is the time used by terminal equipment for switching among a plurality of frequency band combinations.

The maximum transmission power refers to the maximum uplink transmission power that can be used by the terminal device. The minimum transmission power refers to the minimum uplink transmission power required to be used by the terminal device. The occupied bandwidth refers to the transmission bandwidth of the terminal device on the designated frequency band. The reference sensitivity refers to the lowest power at which the terminal device can reliably receive data. The subcarrier spacing refers to a small segment of frequency domain resource which can be modulated independently, and the subcarrier spacing is the width of one subcarrier in the frequency domain. Among the NR, 15KHz, 30KHz, 60KHz, 120KHz, 240KHz, etc. are generally supported.

In a fifth aspect, a terminal device is provided, which includes a processor and optionally a memory, the processor is configured to control the transceiver to transceive signals, the memory is configured to store a computer program, and the processor is configured to call and execute the computer program from the memory, so that the terminal device performs the method in the first aspect or any one of the possible implementation manners of the first aspect.

Optionally, the number of the processors is one or more, and the number of the memories is one or more.

Alternatively, the memory may be integral to the processor or provided separately from the processor.

Optionally, the terminal device further comprises a transceiver, which may be specifically a transmitter (transmitter) and a receiver (receiver).

A sixth aspect provides a network device, which includes a processor and optionally a memory, the processor is configured to control the transceiver to transmit and receive signals, the memory is configured to store a computer program, and the processor is configured to call and execute the computer program from the memory, so that the network device performs the method in any possible implementation manner of the second aspect or the second aspect.

Optionally, the network device further comprises a transceiver, which may be specifically a transmitter (transmitter) and a receiver (receiver).

In a seventh aspect, a communication apparatus is provided, including: each module or unit for implementing the method of the first aspect or any one of the possible implementations of the first aspect, or each module or unit for implementing the method of the second aspect or any one of the possible implementations of the second aspect.

In an eighth aspect, there is provided a communication system comprising: a terminal device configured to perform the method of the first aspect or any one of the possible implementations of the first aspect; and a network device configured to perform the method of the second aspect or any one of the possible implementations of the second aspect.

In a ninth aspect, a computer-readable storage medium is provided, which stores a computer program or code, which, when run on a computer, causes the computer to perform the method of the first aspect or any one of the possible implementations of the first aspect, or the method of the second aspect or any one of the possible implementations of the second aspect.

In a tenth aspect, a chip is provided, which includes at least one processor coupled with a memory, where the memory is used to store a computer program, and the processor is used to call and execute the computer program from the memory, so that a terminal device installed with the chip system performs the method in any one of the above-mentioned possible implementations of the first aspect or the first aspect, and a network device installed with the chip system performs the method in any one of the possible implementations of the second aspect or the second aspect.

Wherein the chip may comprise an input circuit or interface for transmitting information or data, and an output circuit or interface for receiving information or data.

In an eleventh aspect, there is provided a computer program product comprising: computer program code for causing a terminal device to perform the method of any of the above possible implementations of the first aspect or the first aspect when the computer program code is run by the terminal device, and for causing a network device to perform the method of any of the second aspect or the second possible implementations when the computer program code is run by the network device.

According to the scheme of the embodiment of the application, a wireless communication method and a communication device are provided, and various new band combination combinations are designed, so that uplink and downlink frequency bands can be flexibly configured, and uplink and downlink transmission capacity is enhanced. In addition, the network equipment is allowed to simultaneously carry out the configuration of the frequency domain resources on the terminal equipment according to the plurality of BC reported by the terminal equipment, and the terminal equipment is flexibly switched among a plurality of groups of frequency domain resources.

Drawings

Fig. 1 is a schematic diagram of an example of a communication system to which the present application is applied.

Fig. 2 is a schematic diagram illustrating an example of a wireless communication method to which the present invention is applied.

Fig. 3 is a schematic diagram of an example of a wireless communication method to which the present application is applied.

Fig. 4 is another exemplary view of a wireless communication method to which the present application is applied.

Fig. 5 is another exemplary view of a wireless communication method to which the present application is applied.

Fig. 6 is another explanatory view of a wireless communication method to which the present application is applied.

Fig. 7 is a schematic diagram of an example of a wireless communication apparatus to which the present application is applied.

Fig. 8 is another exemplary view of a wireless communication apparatus to which the present application is applied.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE time division duplex (time division duplex), TDD), universal Mobile Telecommunications System (UMTS), worldwide Interoperability for Microwave Access (WIMAX) communication system, future fifth generation 5G systems or New Radio (NR), and may also be extended to similar wireless communication systems, such as wireless fidelity (WIFI), and third generation partnership project (3 rd generation partnership project,3 gpp) related cellular systems, and so on.

Generally, conventional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, a mobile communication system will support not only conventional communication but also, for example, device to device (D2D) communication, machine to machine (M2M) communication, machine Type Communication (MTC), vehicle to vehicle (V2X) communication, for example, vehicle to vehicle (V2V) communication, vehicle to infrastructure (V2I) communication, vehicle to pedestrian (V2P) communication, vehicle to network (V2N) communication, etc., long term evolution (LTE-V) communication between vehicle to vehicle (LTE-V) communication, machine type communication (IoT), internet communication (MTC, internet technology), long term evolution (MTC-communication, etc.).

To facilitate understanding of the technical solutions of the present application, fig. 1 shows a schematic diagram of a communication system 100 suitable for an embodiment of the present application. As shown in fig. 1, the communication system may include at least one network device, such as network device 101. The communication system may further comprise at least one terminal device, such as terminal devices 102 to 107. The terminal devices 102 to 107 may be mobile or stationary. Network device 101 and one or more of terminal devices 102-107 may each communicate over a wireless link. That is, the network device may send signals to the terminal device, and the terminal device may also send signals to the network device. Illustratively, each network device may provide communication coverage for a particular geographic area and may communicate with terminal devices located within that coverage area. For example, the network device may send configuration information to the terminal device, and the terminal device may send uplink data to the network device based on the configuration information. For another example, the network device may send downlink data to the terminal device. Thus, the network device 101 and the terminal devices 102 to 107 in fig. 1 constitute one communication system.

Alternatively, the terminal devices may communicate directly with each other. For example, direct communication between terminal devices may be achieved using D2D technology or the like. As shown in fig. 1, direct communication between

terminal devices

105 and 106 and between

terminal devices

105 and 107 may be performed using D2D technology. Terminal device 106 and terminal device 107 may communicate with terminal device 105 separately or simultaneously.

Among them, the terminal apparatuses 105 to 107 can also communicate with the network apparatus 101, respectively. In one aspect, the network device 101 may be in direct communication, and the

terminal devices

105 and 106 in the figure may be in direct communication with the network device 101. On the other hand, it may communicate with the network device 101 indirectly, such as the terminal device 107 in the figure communicating with the network device 101 via the terminal device 105.

It should be understood that fig. 1 shows one network device and a plurality of terminal devices, and communication links between the communication means. Alternatively, the communication system 100 may include a plurality of network devices, and each network device may include other numbers of terminal devices within its coverage area, such as more or fewer terminal devices. This is not a particular limitation of the present application.

Each of the above-described communication apparatuses, such as the network device 101 and the terminal devices 102 to 107 in fig. 1, may be configured with a plurality of antennas. The plurality of antennas may include at least one transmit antenna for transmitting signals and at least one receive antenna for receiving signals. Additionally, each communication device can additionally include a transmitter chain and a receiver chain, each of which can in turn comprise a plurality of components associated with signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, antennas, etc.), as will be appreciated by one skilled in the art. Therefore, the network equipment and the terminal equipment can communicate through the multi-antenna technology.

Optionally, the wireless communication system 100 may further include other network entities such as a network controller, a mobility management entity, etc., which are not specifically described in this application.

It should also be understood that fig. 1 is a simplified schematic diagram that is merely illustrated for ease of understanding, and that other network devices or other terminal devices, which are not shown in fig. 1, may also be included in the communication system 100.

It should be noted that, in the embodiment of the present application, signal transmission is used as a background, and the present application is also applicable to scenes of homogeneous networks and heterogeneous networks, a low frequency scene (sub 6G), a high frequency scene (more than 6G), terahertz, optical communication, frequency Division Duplex (FDD) and Time Division Duplex (TDD) systems, non-terrestrial communication networks (NTN), for example, satellite communication, and the like. Meanwhile, the transmission point is not limited in the application, and the multi-point cooperative transmission between the macro base station and the macro base station, between the micro base station and the micro base station, between the macro base station and the micro base station, and the like can be realized. In addition. The embodiment of the application is suitable for communication between the base station and the terminal, communication between the terminal and the terminal, communication between the base station and the base station, CU/DU architecture, CP/UP separation architecture and the like.

The embodiments of the present application are applicable to a beam-based multi-carrier communication system, such as an NR system, as shown in fig. 1. The system includes upstream (terminal device to network device) and downstream (access network device to terminal device) communications in the communication system. The uplink communication comprises transmission of an uplink physical channel and an uplink signal, and the downlink communication comprises transmission of a downlink physical channel and a downlink signal. Wherein, the uplink physical channel includes: a random access channel (PRACH), an uplink control channel (PUCCH), an uplink data channel (PUSCH), and the like. The uplink signal includes: a channel Sounding Reference Signal (SRS), an uplink control channel demodulation reference signal (PUCCH-DMRS), an uplink data channel demodulation reference signal (PUSCH-DMRS), an uplink phase noise tracking signal (PTRS), an uplink positioning signal, and the like. The downlink physical channel comprises: a broadcast channel (PBCH), a downlink control channel (PDCCH), a downlink data channel (PDSCH), and the like. The downlink signal includes: a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), a downlink control channel demodulation reference signal (PDCCH-DMRS), a downlink data channel demodulation reference signal (PDSCH-DMRS), a phase noise tracking signal (PTRS), a channel state information reference signal (CSI-RS), a cell signal (CRS), a fine synchronization signal (TRS), a positioning reference signal (position reference signal, RS), and the like, which are not particularly limited in this application.

It should be understood that the technical solution provided in the present application is mainly applied to a wireless communication system, and in the wireless communication system, communication devices may perform wireless communication using air interface resources. The communication device may include a network device and a terminal device. The air interface resources may include at least one of time domain resources, frequency domain resources, code resources, and spatial resources. The technical solution provided by the present application is also applicable to other or future communication systems, such as a sixth generation mobile communication system. This is not a limitation of the present application.

In the embodiments of the present application, a terminal device may be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent or user equipment, a soft terminal, and the like, and includes various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem. The terminal may be a Mobile Station (MS), a subscriber unit (subscriber unit), a cellular phone (cellular phone), a smart phone (smart phone), a wireless data card, a Personal Digital Assistant (PDA) computer, a tablet computer, a wireless modem (modem), a handheld device (handset), a laptop computer (laptop computer), a Machine Type Communication (MTC) terminal, or the like.

The terminal device in the embodiment of the present application may also be a mobile phone (mobile phone), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation security (transportation security), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol), SIP) phone, wireless Local Loop (WLL) station, personal Digital Assistant (PDA), handheld terminal, laptop, cordless phone (cordless phone) or Wireless Local Loop (WLL) station, terminal equipment in future 5G networks, or terminal equipment in future evolved public land mobile network PLMN, etc.

In addition, the terminal device may also be a terminal device in an internet of things (IoT) system. The IoT is an important component of future information technology development, and the main technical characteristic of the IoT is to connect objects with a network through a communication technology, so that an intelligent network with man-machine interconnection and object-object interconnection is realized. It should be understood that the present application is not limited to the particular form of the terminal device.

In addition, the terminal equipment can also comprise sensors such as an intelligent printer, a train detector, a gas station and the like, and the main functions of the terminal equipment comprise data collection (part of the terminal equipment), control information and downlink data receiving of the network equipment, electromagnetic wave sending and uplink data transmission to the network equipment.

In the embodiment of the present application, the network device may be an apparatus deployed in a radio access network to provide a wireless communication function for a terminal device, and may be a device for communicating with the terminal device or a chip of the device. The network devices include, but are not limited to: a Radio Network Controller (RNC), a Base Station Controller (BSC), a home base station (e.g., home evolved node B, or home node B, HNB), a baseband unit (BBU), an Access Point (AP), a wireless relay node, a wireless backhaul node, a Transmission Point (TP), or a Transmission and Reception Point (TRP) in a wireless fidelity system, and may also be a gbb or a transmission point TRP or TP in a 5G NR system, or one or a group (including multiple antenna panels) of antenna panels of a base station in a 5G system, or may also be a network node forming the gbb or the transmission point, such as a baseband unit BBU, or a distributed unit (pdu), and the like.

The Network device in the embodiment of the present application may include macro Base stations, micro Base stations (also referred to as small stations), relays, access points, and the like in various forms, which may be Base Transceiver Stations (BTSs) in a global system for mobile communications GSM system or code division multiple Access CDMA, base stations (nodebs, NBs) in a wideband code division multiple Access WCDMA system, evolved node bs (enbs, or enodebs) in an LTE system, or a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the Network device may be a relay, an Access point, a wearable device, or a vehicle-mounted device, a wearable device, a Network device in a future 5G Network, or a Network device in a future evolved Public Land Mobile Network (PLMN) Network, and the like.

In some network deployments, network devices may include Centralized Units (CUs) and Distributed Units (DUs). The network device may further include a Radio Unit (RU), an Active Antenna Unit (AAU). The CU implements part of functions of the network device, such as being responsible for processing non-real-time protocols and services, implementing Radio Resource Control (RRC) and Packet Data Convergence Protocol (PDCP) layers. The DU implements partial functions of the network device, such as handling physical layer protocols and real-time services, and implementing functions of a Radio Link Control (RLC) layer, a Media Access Control (MAC) layer, and a Physical (PHY) layer. The AAU implements part of the physical layer processing functions, radio frequency processing and active antenna related functions. Since the information of the RRC layer eventually becomes the information of the PHY layer or is converted from the information of the PHY layer. Thus, under this architecture, higher layer signaling (e.g., RRC layer signaling) may also be considered to be sent by the DU, or by the DU + AAU.

It is to be understood that the network device may be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU may be divided into network devices in the access network RAN, or may be divided into network devices in the core network CN, which is not limited herein.

The network device provides a service for a cell, and a terminal device communicates with the cell through a transmission resource (e.g., a frequency domain resource or a spectrum resource) allocated by the network device, where the cell may belong to a macro base station (e.g., a macro eNB or a macro gNB), or may belong to a base station corresponding to a small cell (small cell), where the small cell may include: urban cell (metro cell), micro cell (microcell), pico cell (pico cell), femto cell (femto cell), etc., and these small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission service.

The network device may also be a location service center, such as an evolved serving mobile location center (E-SMLC), a Location Management Function (LMF), and the like, where the location service center is used for measuring information and location information of the mobile phone network device and the terminal device. The positioning service center is also responsible for carrying out position calculation on the measurement quantity of the terminal equipment so as to determine the position of the terminal equipment. The information interaction between the terminal device and the positioning service center may be implemented by an LTE positioning protocol (LTE positioning protocol) or an NR positioning protocol (NR positioning protocol). The interaction between the network device and the positioning center is realized by LTE positioning protocol a (LPPa) or NR positioning protocol a (NRPPa).

In the embodiment of the application, the network device and the terminal device include a radio resource control RRC signaling interaction module, a media access control MAC signaling interaction module, and a physical PHY signaling interaction module. The RRC signaling interaction module may be: and the network equipment and the terminal equipment are used for sending and receiving RRC signaling. The MAC signaling interaction module may be: a module, which is used by the network device and the terminal device to send and receive media access control element (MAC CE) signaling. The PHY layer signaling and data interaction module may be: and the network equipment and the terminal equipment are used for sending and receiving the uplink control signaling or the downlink control signaling, and the uplink data and the downlink data.

With increasing network capacity demands, frequency division multiplexing (FDD) frequency spectrum resources are widely used. In order to meet the peak rate of a single user and the demand for increased system capacity, the most direct method is to increase the transmission bandwidth of the system. Therefore, carrier Aggregation (CA) technology is introduced to increase the transmission bandwidth of a single user, thereby implementing FDD carrier aggregation and increasing the usage of the frequency spectrum of the user equipment UE. Specifically, the CA can realize multi-frequency resource integration, and aggregate spectrum resources of the same frequency band or different frequency bands for use by the terminal device, thereby improving the resource utilization rate of the entire network system and improving the user experience.

It should be understood that a CA is simply grouping two or more carrier units (CCs) together to support a larger transmission bandwidth. To ensure backward compatibility, each carrier does not exceed 20MHz at maximum. In practice, each carrier element corresponds to an individual cell. One carrier unit can be generally equated with one cell. To efficiently utilize the fragmented spectrum, carrier aggregation supports aggregation between different carrier units.

In the embodiments of the present application, the meaning of the carrier and the carrier unit may be understood to be the same. The CA function may support contiguous or non-contiguous carrier aggregation, which supports aggregation between different component carriers in order to efficiently utilize fragmented spectrum. The method specifically comprises the following steps: carrier wave unit aggregation of the same or different bandwidths, adjacent or non-adjacent carrier wave unit aggregation in the same frequency band, and carrier wave unit aggregation in different frequency bands. That is, the carrier aggregation scenario can be divided into 3 scenarios, i.e., intra-band contiguous carrier aggregation, intra-band non-contiguous carrier aggregation, and out-of-band non-contiguous carrier aggregation.

A carrier to which the terminal device randomly accesses is referred to as a Primary Carrier Component (PCC), and a cell corresponding to the primary carrier is a primary cell (PCell) and is responsible for RRC communication with the terminal device. The PCell is a cell for initial connection establishment with a terminal device, or a cell for Radio Resource Control (RRC) connection reestablishment, or a primary cell designated in a handover procedure. The PCell may include one downlink carrier and one uplink carrier. Among them, the downlink carrier of the PCell is called a downlink primary carrier (DL PCC), and the uplink carrier of the PCell is called an uplink primary carrier (uplink PCC).

The carriers other than the primary carrier are called Secondary Carrier Components (SCCs), and a cell corresponding to the secondary carrier is a secondary cell (SCell). The SCell is added at RRC reconfiguration to provide additional radio resources, and there is no RRC communication between the SCell and the UE. The SCell is added, modified, and released through an RRC connection reconfiguration message after an initial security activation procedure. The SCell may include one downlink carrier. The downlink carrier of the SCell is referred to as a downlink secondary carrier DL SCC, and the uplink carrier of the SCell is referred to as an uplink secondary carrier UL SCC.

Currently, an SCell has two states, an activated state and a deactivated state. When the SCell is in an active state and a Physical Downlink Control Channel (PDCCH) is configured in the cell, the terminal device needs to monitor the PDCCH of the cell and perform signal transmission based on the configuration of the network device and uplink and downlink scheduling information. When the SCell is in the deactivated state, the terminal device does not need to monitor and transmit any uplink and downlink signals in the cell.

Specifically, the CA configuration method may include: first, the network device instructs the terminal device to add the SCell through RRC signaling and provides the relevant configuration of the SCell, where the default state of the SCell is the deactivated state. Then, the network device instructs the terminal device to activate or deactivate the SCell through a activation/deactivation radio access control-control element (MAC-CE) signaling. When the SCell is activated, the terminal device performs corresponding signal transmission in the cell. In addition, the network device may configure a deactivation timer for the terminal device, and when the timer expires, the UE considers that the state of the SCell changes from the activated state to the deactivated state.

With the enhancement of CA technology, a dormant state is introduced. That is, when the SCell is in the dormant state, the terminal device does not need to monitor the PDCCH scheduling information for the cell, and generally maintains measurement and reporting of Channel State Information (CSI). Further, a synchronization signal module SSB and a Physical Broadcast Channel (PBCH) are introduced in the NR. The network device broadcasts the SSB periodically, and the terminal device achieves time-frequency synchronization by receiving the SSB. The SSB may also be used for Radio Resource Management (RRM) measurement, etc. When the terminal equipment receives the SSB of the SCell, the preparation of the radio frequency link is performed, so that the CSI is subsequently tested and reported on the SCell for normal data transmission.

In order to save power for the terminal device, the current terminal device is not always in an activated state after configuring the multiple scells, but is in a deactivated state. The terminal device may activate the SCell when there is large data to transmit.

The SCell activation process under the multi-carrier aggregation may include: first, the network device transmits a MAC-CE activating the SCell to the terminal device. Then, the terminal device transmits a hybrid automatic repeat request (HARQ). Meanwhile, the terminal device starts to wait for a Synchronization Signal Block (SSB) on the SCell to perform time-frequency synchronization. And after time-frequency synchronization of the terminal equipment, waiting for CSI-RS to carry out channel measurement. And finally, the terminal equipment sends a channel state information reference signal report CSI-RS report to the network equipment, namely, the activation process of the whole SCell is completed. The time delay of the SCell activation procedure needs more than 30 ms.

In addition to CA, NR supports Supplemental Uplinks (SUL) at the same time. The SUL is an additional uplink carrier aggregated on a conventional DL or UL carrier combination. For example, a 3.5GHz DL or UL carrier combination may supplement an 800MHz SUL. Among them, the CA technology improves system throughput by increasing available bandwidth of users, and the SUL technology improves uplink coverage mainly by using low frequency carriers.

It should be understood that the CA capability actually available to a certain terminal device is determined by the CA capability of the terminal device itself, and the CA capability of the network device connected to the terminal device. Since the implementation of CA is related to the capabilities of the terminal device, it is necessary to describe the CA capabilities of the terminal device from the point of view of the terminal device. The CA capability of the terminal device mainly depends on the number of uplink transmission links and the number of downlink reception links of the terminal device. The CA capability of the terminal device mainly refers to a frequency band combination that can be supported by the terminal device.

Illustratively, after the network device inquires about the CA capability of the terminal device through the uecapabilityienquiry signaling, the terminal device reports the CA capability to the network device through the UECapabilityInformation signaling.

The signaling for reporting BC capability by the terminal device includes a bandcombining list entry, where the bandcombining list further includes one or more bandcombining (may be abbreviated as BC) for indicating that the terminal device supports concurrence or selection on multiple frequency domain resources in the reported BC. In addition, each BC corresponds to a featurestation combination for indicating uplink and downlink radio frequency parameters corresponding to the frequency band resources in the BC.

It should be understood that BC herein may be implemented as intra-band contiguous CA, intra-band non-contiguous CA, or out-of-band non-contiguous CA.

It should be noted that BC that the terminal device can report is (FR 1) and (FR 2). Wherein, FR1 represents a frequency band with a frequency range of 410MHz to 7125MHz, and FR2 represents a frequency band with a frequency range of 24250MHz to 52600 MHz. Each BandParameters in BC represents a contiguous segment of spectral resources in the frequency domain. The terminal device may not report the currently unsupported BC.

In addition, the BandCombination includes a feature association term for indicating the radio frequency transmission indicator feature set supporting the BandCombination. Wherein the featurestatcombination term is indicated by featurestatcombination id.

It should be understood that in the embodiment of the present application, there is a one-to-one correspondence relationship between BandCombination and feature Set.

And finally, the network equipment selects one BC from one or more BC in the BandCombinationList reported by the terminal equipment to be configured for the UE based on the BandCombinationList reported by the terminal equipment and according to the parameters of the current system load, the time-frequency resource utilization rate, the service requirement of the terminal equipment and the like.

Optionally, the network device issues the RRC signaling to the terminal device. And after receiving the configuration information of the network equipment, the terminal equipment transmits and receives data according to the configured time-frequency resources.

However, the reporting of the terminal device capability and the configuration of the terminal device by the network device have some limitations.

Firstly, BC can support simultaneous reporting of a maximum of 32 bands, but in implementation application, the multi-frequency concurrency capability is limited by the hardware capabilities of the terminal device and the network device. In particular, the multi-frequency concurrency capability is limited by the number of transmit or receive radio frequency paths of the terminal device, i.e. each frequency domain resource needs to transmit on a separate radio frequency path.

In BC currently defined, the maximum uplink band number =2, and the maximum downlink band number =4. The uplink transmission path of the terminal needs to be powered by a power module, and the number of the radio frequency transmission paths of the terminal equipment is not significantly increased in consideration of the problems of power consumption, cost and the like of the terminal equipment, so that the maximum uplink band number supported in the currently defined BC cannot exceed 2 in a short period.

Accordingly, the number of downlink bands is limited to the number of receiving rf paths of the terminal device, but the maximum number of downlink receiving bands supported by the existing terminal device is greater than the number of uplink transmitting bands because the receiving rf paths have lower requirements for rf indexes such as power supply voltage. Therefore, the number of uplink frequency domain resources included in the currently defined BC is less than or equal to 2, and the number of downlink frequency domain resources is less than or equal to 4.

Secondly, the terminal device reports one or more BC, but the network device selects only one of the BC from the plurality of BC for configuration, so as to be used for the terminal device to perform uplink and downlink transmission.

Then, the network device configures the frequency band resource for the terminal device through RRC signaling, and activates or deactivates the cell through L2 MAC-CE or DCI signaling. The implementation mode enables the band number of the network equipment configuration = the maximum simultaneous activation band number of the terminal equipment = the maximum simultaneous transmission band number of the terminal equipment. For example, the UE reports BC including two bands (e.g., band1+ band 2), and the base station configures frequency domain resources corresponding to the two bands for the UE through RRC signaling, so that the UE may concurrently or selectively transmit on the two bands according to lower layer signaling.

Finally, the BC is coupled in uplink and downlink, that is, uplink and downlink bands supported by the terminal device are reported uniformly by one BC, which cannot realize flexible use of spectrum resources to a certain extent.

In summary, the network device configures time-frequency domain resources for the User Equipment (UE) according to its CA capability to perform data transmission.

Therefore, the method cannot flexibly configure the spectrum resources, thereby affecting uplink and downlink transmission capability and user experience. There is currently no solution to the limitations of L1/L2/L3 configuration capability coupling in multi-frequency data transmission.

In view of this, the present application provides a wireless communication method and apparatus, which allow a network device to simultaneously configure frequency domain resources corresponding to multiple frequency band combinations for a terminal device through an RRC signaling according to the multiple frequency band combinations reported by the terminal device, so as to improve user experience rate and system transmission performance.

Furthermore, the technical scheme of the application combines, reports and decouples the uplink and downlink frequency bands. Namely, the terminal equipment can report the frequency band combination of UL-only or DL-only, so that flexible spectrum access and switching can be realized.

The method provided by the embodiment of the application will be described in detail below with reference to the accompanying drawings.

In order to facilitate understanding of the embodiments of the present application, the following descriptions are made:

in the embodiments of the present application, unless otherwise specified or conflicting with respect to logic, the terms and/or descriptions in different embodiments have consistency and may be mutually cited, and technical features in different embodiments may be combined to form a new embodiment according to their inherent logic relationship.

In this application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. In the description of the text of the present application, the character "/" generally indicates that the former and latter associated objects are in an "or" relationship. "at least one of the following" or similar expressions refer to any combination of these items, including any combination of the singular or plural items. For example, at least one (one) of a, b, and c, may represent: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a, b and c. Wherein a, b and c may be single or plural respectively.

In the embodiments of the present application, the "first", "second", and various numerical numbers indicate the distinction for the convenience of description, and do not limit the scope of the embodiments of the present application. For example, different indication information is distinguished.

In the embodiment of the present application, the protocol definition may be implemented by saving corresponding codes, tables, or other manners that may be used to indicate related information in advance in the devices (e.g., the terminal device and the network device), and the present application is not limited to a specific implementation manner thereof. The "protocol" referred to in the embodiments of the present application may refer to a standard protocol in the communication field, and may include, for example, an LTE protocol, an NR protocol, and a related protocol applied in a future communication system, which is not limited in the present application.

In the embodiment of the present application, the descriptions "when … …" and "in the case of … …" and the like both refer to that a device (e.g., a terminal device or a network device) performs corresponding processing in some objective case, and are not limited in time, and do not require an action that is necessarily determined when the device (e.g., a terminal device or a network device) is implemented, and do not mean that there is another limitation.

In the embodiments of the present application, "for indicating" may include both for direct indication and for indirect indication. When a certain indication information is described for indicating a, the indication information may be included to directly indicate a or indirectly indicate a, and does not mean that a is necessarily carried in the indication information.

The indication mode related to the embodiment of the application is understood to cover various methods which can enable the party to be indicated to acquire the information to be indicated. The information to be indicated may be sent together as a whole, or may be sent separately by dividing into a plurality of pieces of sub information, and the sending periods and/or sending timings of the pieces of sub information may be the same or different. Wherein, the transmission period and/or transmission timing of these sub information may be predefined. For example, predefined according to a protocol, or configured by the transmitting end device by sending configuration information to the receiving end device.

In the embodiment of the present application, "wireless communication" may be simply referred to as "communication". "communication" may also be described as "data transmission," information transmission, "" data processing, "etc., with" transmission "including" receiving "and" transmitting. This is not a particular limitation of the present application.

The following describes a wireless communication method in the embodiments of the present application in detail with reference to the drawings.

Fig. 2 is a schematic flowchart of a wireless communication method 200 provided in an embodiment of the present application, and the specific implementation steps include:

s210, the terminal device sends the first information to the network device.

Correspondingly, the network equipment receives the first information from the terminal equipment.

The first information comprises indication information of m frequency band combinations.

According to a possible implementation manner, the terminal device may report m frequency band combinations BC for enabling the terminal device to realize flexible switching on multiple groups of frequency domain resources, where m is greater than or equal to 2. For example, the terminal device sends three frequency band combinations BC to the network device, where the three frequency band combinations BC are respectively band1+ band2, band 3+ band 4, and band5+ band6, for indicating that the terminal device supports concurrent or selective transmission on the frequency domain resources corresponding to the three frequency band combinations.

Optionally, any two BC combinations BC may be completely the same for the three frequency bands reported by the terminal device. For example, the first BC is band1+ band2, the second BC is band 3+ band 4, and the third BC is band1+ band2, then the network device may configure frequency domain resources corresponding to band1 to band 4 for the terminal device. In this embodiment of the present application, it needs to be ensured that frequency band resources corresponding to two BC in m BC reported by the terminal device are different.

It should be understood that, in the embodiment of the present application, all BC reported by the terminal device are currently defined BC combinations.

Alternatively, the same frequency domain resources may be included in one band pair, that is, one band is included in one band pair, for example, in the case of band1, corresponding to intra-band CA for intra-band contiguous or non-contiguous carrier aggregation. For example, band1+ band2 corresponds to out-of-band non-contiguous carrier aggregation inter-band CA.

It should be noted that the band pairs in the BC have a priority or an internal sequential relationship, which is specifically represented that a plurality of band pairs in the BC reported by the terminal device have an internal sequential relationship from the first to the last. In one possible implementation, the network device sends the capability request information to the terminal device.

Correspondingly, the terminal equipment receives the capability request information from the network equipment. And the terminal device sends the first information to the network device according to the capability request information.

The capability request information is used for requesting a frequency band combination supported by the terminal equipment.

For example, when the terminal device supports concurrent or selective transmission on the frequency domain resources corresponding to the two frequency band combinations, two frequency band combinations BC are reported to the network device at the same time, where one BC may include band1+ band2, and the other BC may include band 3+ band 4. Namely, the terminal equipment supports concurrent or selective transmission on the band1 to band 4 frequency bands.

S220, the network device sends the second information to the terminal device.

Correspondingly, the terminal device receives the second information from the network device.

For example, the second information may be carried by Radio Resource Control (RRC) signaling, which is not specifically limited in this application.

Optionally, the network device may determine the second information according to the first information before performing step S220.

The second information includes frequency domain resources and radio frequency parameters corresponding to each of the n frequency band combinations.

It should be noted that n frequency band combinations belong to m frequency band combinations, m is greater than or equal to n, and n is greater than or equal to 2,m and n are positive integers.

According to a possible implementation manner, in order to solve the problem that the terminal device reports m frequency band combinations BC, the network device configures, according to the m frequency band combinations reported by the terminal device, time-frequency domain resources corresponding to the n frequency band combinations for the terminal device through an RRC signaling. Wherein, m is more than or equal to n is more than or equal to 2,n frequency band combinations which are subsets of the m frequency band combinations.

Another possible implementation manner is to report a frequency band combination BC to the terminal device, where the BC includes multiple frequency band pairs, and is used to enable the terminal device to implement flexible switching on multiple groups of frequency domain resources, and m is greater than or equal to 2. The network device may configure time-frequency domain resources, i.e., bands 1 to 6, corresponding to all band pairs for the terminal device through RRC signaling. Or, the network device may also configure, according to the terminal device and the hardware capability of the network device, time-frequency domain resources corresponding to the two band pairs, for example, bands 1 to 4, for the terminal device, which is not specifically limited in this application.

Illustratively, the radio frequency parameters include one or more of the following: the method comprises the steps of maximum transmitting power, minimum transmitting power, occupied bandwidth, reference sensitivity, subcarrier spacing and switching time delay, wherein the switching time delay is the time used by terminal equipment for switching among a plurality of frequency band combinations.

The maximum transmission power refers to the maximum uplink transmission power that can be used by the terminal device. The minimum transmission power refers to the minimum uplink transmission power required to be used by the terminal device. The occupied bandwidth refers to the transmission bandwidth of the terminal device on the designated frequency band. The reference sensitivity refers to the lowest power at which the terminal device can reliably receive data. The subcarrier spacing refers to a small segment of frequency domain resource which can be modulated independently, and the subcarrier spacing is the width of one subcarrier in the frequency domain. Among the NRs, 15KHz, 30KHz, 60KHz, 120KHz, 240KHz, etc. are generally supported.

By way of example and not limitation, each of the n frequency band combinations is used to indicate an uplink transmission capability or a downlink transmission capability of the terminal device.

S230, the terminal device communicates in a first frequency band combination of the n frequency band combinations based on the second information.

In one possible implementation, the network device sends the indication information to the terminal device.

Correspondingly, the terminal equipment receives the indication information from the network equipment.

The indication information is used for indicating that the initial working frequency band combination of the terminal equipment is the first frequency band combination.

In this implementation manner, the terminal device may determine, according to the received indication information, that the frequency band combination initially performing transmission resources is the first frequency band combination.

In other words, the first frequency band combination may be the first frequency band combination determined by the network according to the capability priority of the terminal device, that is, the optimal frequency band combination. At this time, the first frequency band combination corresponds to the first frequency band combination or the optimal frequency band combination. Alternatively, the first frequency band combination may be randomly selected by the network device without priority ranking. The first frequency band combination is then arbitrarily selected. Alternatively, the first frequency band combination is a first received frequency band combination when the network device receives the m frequency band combinations. In this case, the first band combination may be considered to correspond to the first band combination. In summary, the first frequency band combination may be determined according to the hardware capabilities of the terminal device and the network device, and the transmission performance of the current network system. This is not a specific limitation in the present application.

The network equipment can select a first band pair as an initial working frequency band according to the sequence relation in the band pairs reported by the terminal equipment; or the network equipment selects one band pair from the band pairs reported by the terminal equipment as an initial working frequency band; or the network device configures a band pair as an initial working frequency band for the terminal device according to the current system load or the time-frequency resource use condition, and the like. This is not a particular limitation of the present application.

By way of example and not limitation, the first band combination may be a first of n band combinations. Alternatively, the first band combination is any one of the n band combinations.

Alternatively, the first frequency band combination may be determined by the network device according to the current system resource allocation condition.

The current specific time point may be included, and the system resource may include the current number of network access users, available time-frequency resources, or network power consumption.

A possible implementation manner is that the first frequency band combination may be any one of n frequency band combinations configured by the network device, or an optimal frequency band combination determined by the network device according to the capability of the terminal device, or a first frequency band combination in an order relationship in which the terminal device reports m frequency band combinations BC, or the network device configures one BC for the terminal device as an initial working frequency band according to the current system load or the use condition of time-frequency resources, and so on. This is not a particular limitation of the present application.

By way of example and not limitation, the network device sends the third information to the terminal device.

Correspondingly, the terminal equipment receives the third information from the network equipment. And the terminal equipment switches to the second frequency band combination according to the third information.

The third information is used for instructing the terminal device to switch to a second frequency band combination, and the second frequency band combination is one of the n frequency band combinations.

In this implementation manner, the network device may not carry the second frequency band combination when sending the handover signaling, which may save signaling overhead. At this time, the second band combination corresponds to the second band combination or the suboptimal band combination. Alternatively, the second frequency band combination may also be randomly selected by the network device without priority ranking, for example, band2+ band 4. The second band combination is then arbitrarily selected. The network device needs to inform the terminal device which specific second frequency band combination is when sending the frequency band combination switching indication. Alternatively, the second frequency band combination is a second received frequency band combination when the network device receives the m frequency band combinations. In this case, the second band combination may be considered to correspond to the second band combination. In short, the second frequency band combination may be determined according to the hardware capabilities of the terminal device and the network device, and the transmission performance of the current network system. This is not a particular limitation of the present application.

For example, the terminal device switches to the second frequency band combination specified by the network device, and may switch from the first frequency band combination to the second frequency band combination. For example, switching from band1+ band2 corresponding to the first frequency band combination to band 3+ band 4 corresponding to the second frequency band combination. Since the network device configures n frequency band combinations BC for the terminal device, that is, the terminal device can switch back and forth arbitrarily within the n BCs.

Therefore, the terminal device can also switch from the first frequency band combination to the third frequency band combination, and then switch to the second frequency band combination or switch to the first frequency band combination according to the scheduling requirement. This is not a particular limitation of the present application.

It should be noted that, in the above implementation manner, the interaction between the terminal device and the network device is taken as an example, and the network device configures, according to the m frequency band combinations reported by the terminal device, the time-frequency domain resources corresponding to the n frequency band combinations, for resource transmission between the network device and the terminal device.

Optionally, the technical solution of the present application is also applicable to a sidelink SL scenario, or to resource allocation and scheduling between a source base station and a target base station. Wherein the SL scene includes vehicle-to-anything communication V2X. V2X further includes vehicle-to-vehicle communication V2V, vehicle-to-pedestrian communication V2P, vehicle-to-infrastructure communication V2I, vehicle-to-network communication V2N, and the like. The embodiments described herein relate to sidelink communications between a terminal device and a direct communication interface between terminal devices, such as a PC5 interface, except for V2N.

According to the scheme provided by the application, the network device can perform time-frequency resource configuration on the terminal device according to the multiple frequency band combinations BC reported by the terminal device, namely, time-frequency resources corresponding to the multiple frequency band combinations. Meanwhile, the terminal device can communicate on the configured frequency band combination based on the second information. The implementation mode can enable the frequency domain resources to be flexibly configured, and improves the transmission capacity and the user experience rate of a user.

In order to facilitate understanding of the embodiments of the present application, a base station and a UE are taken as examples below to exemplarily explain technical solutions provided in the present application.

Fig. 3 is a schematic flow chart of a wireless communication method 300 according to an embodiment of the present application. In this implementation, a new BC type, CS BC, is defined. When the UE reports a plurality of CS BC, the base station performs configuration of frequency domain resources corresponding to the plurality of BC on the UE according to the plurality of CS BC, and then real-time scheduling of the UE is realized through DCI signaling to switch among the frequency domain resources of different CS BC. The concrete implementation steps comprise:

s310, the base station transmits capability query information # a to the UE.

Correspondingly, the UE receives capability query information # a from the base station.

Wherein the capability query information # a is used to query the capability of the carrier aggregation CA of the UE.

For example, when the base station needs to obtain the information of the wireless access capability of the terminal device, the base station may initiate a capability query request to the UE in the RRC _ CONNECTED state through the UE capability inquiry signaling.

S320, the UE sends the capability report information # a to the base station.

Correspondingly, the base station receives capability report information # A from the UE.

The capability reporting information # a includes a plurality of frequency band combinations CS BC simultaneously supported by the UE.

Correspondingly, after receiving the capability request information from the base station, the UE reports the radio transmission capability, that is, the multiple frequency band combination BC supported by the base station, to the base station through the UECapabilityInformation signaling. The UE capacity information signaling of the UE reporting capability comprises band combination information used for indicating m frequency band combinations BC supported by the UE, and the physical meaning of the frequency band combination indicates that the UE has concurrency or transmission capability on some frequency domain resources and is used for indicating that the UE supports concurrency or transmission on a plurality of frequency domain resources in the reported BC.

Illustratively, when the UE supports concurrent or selective transmission on the frequency domain resources corresponding to the two frequency band combinations, two frequency band combinations BC are reported to the base station at the same time, where one BC may include band1+ band2, and the other BC may include band 3+ band 4. Namely, the terminal equipment supports concurrent or selective transmission on band1+ band 4 and band 3+ band 4 frequency bands.

The CS BC reported by the UE has a priority or an intrinsic ordering relationship, which is specifically represented by that the BandCombination in the BandCombination list has an intrinsic ordering relationship from the first to the last.

S330, the base station transmits the configuration information # a to the UE.

Correspondingly, the UE receives configuration information # a from the base station.

The configuration information # A is used for indicating all frequency domain resources supported by the UE and UE uplink and downlink radio frequency parameters # A. The configuration information # a is determined by the base station according to the received capability report information # a.

That is, after receiving the capability reporting information # a, the base station determines a plurality of CS BCs supported by the UE, and performs resource configuration on the UE according to the plurality of CS BCs.

On the one hand, when the UE reports a plurality of CA BCs, the base station may perform the configuration of the frequency domain resource for the UE through the RRC signaling for one of the CA BCs. In this implementation, the base station is allowed to perform the frequency domain resource allocation on the UE according to all CS BC reported by the UE. Illustratively, when the UE reports two CS BC simultaneously, one CS BC contains band1+ band2 and the other CS BC contains band 3+ band 4. Then, the base station configures the UE with all frequency domain resources, i.e., bands 1 to 4, contained in CS BC.

It can be understood that, based on multiple CS BCs reported by the UE at the same time, the base station may perform time-frequency resource configuration on the UE according to the multiple BCs reported by the UE at the same time. For example, the UE reports three CS BCs, where the first CS BC includes band1+ band2, the second CS BC includes band 3+ band 4, and the third CS BC includes band5+ band6, and the base station may configure the UE with the time-frequency resources from band1 to band6 at the same time.

Optionally, the base station may also configure the time-frequency resources of band1 to band 4 or band3 to band6 for the UE at the same time. The present application is not limited to this specifically, and it is only required to ensure that the number of frequency band combinations configured by the base station is greater than or equal to 2 and less than or equal to the number of frequency band combinations reported by the UE.

It should be noted that the technical solution of the present application is also applicable to the current BC reporting mode of the UE and the frequency domain resource configuration of the UE performed by the base station based on the reported BC, that is, the frequency band combination is equal to 1.

For example, the frequency domain resources reported by the UE in the CS BC may be repeated. That is, the UE may report two CS BC, where the first CS BC contains band1+ band2 and the second CS BC contains band1+ band 3. The network device may configure the terminal device according to the two CS BC, that is, configure the time-frequency resources of the terminal devices band1 to 3.

Illustratively, band in the same BC is the same frequency domain resource, that is, the situation that band1+ band1 is reported in CS BC can occur, which corresponds to the situation of intra-band CA, and vice versa.

It should be understood that the CS BC reported by the terminal device is the currently defined BC combination, and the band in BC represents a segment of continuous frequency domain resources in the frequency domain.

On the other hand, the base station also needs to configure uplink and downlink radio frequency parameters # a for the UE to perform uplink and downlink resource transmission. The base station may determine the only corresponding featurestation combination according to the BandCombination reported by the UE. The featurestation combination is used to indicate the radio frequency transmission indicator corresponding to the current BandCombination. That is, the featureSet index number can be obtained according to featureSet combination in BandCombination reported by the UE.

It should be understood that, during the reporting process of the UE capability, each BandCombination in the BandCombination list not only includes a specific operating frequency band, but also includes a featurestopcombination parameter for indicating radio frequency indicators corresponding to uplink and downlink data transmission performed by the terminal device on the current BandCombination, that is, there is a one-to-one correspondence between BandCombination and featurestopcombination.

The radio frequency transmission index corresponding to each BandCombination is determined in the subsequent protocol, which is not specifically limited in this application.

In the embodiment of the present application, the featureSet is divided into an upstream featureSet ID and a downstream featureSet ID. The method mainly comprises related information such as similar uplink channel sounding signals SRS, transmitting power, downlink DCI, sub-carrier space (SCS) and the like.

In the embodiment of the present application, the bearer type of the configuration information # a may be, but is not limited to, radio resource control signaling RRC signaling.

S340, the base station transmits the instruction information # a to the UE.

Correspondingly, the UE receives the indication information # a from the base station.

Wherein, the indication information # a is used for indicating the initial operating frequency band combination of the UE. The initial operating band combination is one of a plurality of CS BCs.

Specifically, the base station configures some or all of the frequency domain resources included in the multiple BC for the UE, and needs to indicate the initial operating band frequency of the terminal device, that is, the initial operating band combination.

It should be noted that the configuration information # a in step S330 and the indication information # a in step S340 may be transmitted together through RRC signaling or may be transmitted separately, and this is not particularly limited in this application.

Illustratively, the base station may select a first BC from the multiple BCs as an initial operating frequency band according to an inherent sequential relationship of the multiple frequency band combinations BC reported by the UE; or the base station randomly selects one BC from n frequency band combinations BC configured for the UE as an initial working frequency band; or the base station configures a BC as an initial working frequency band for the UE according to the current system load or the time-frequency resource use condition.

Illustratively, based on the base station configuring all frequency domain resources band1 to band 4 for the UE in step S330, the base station needs to further indicate the initial operating frequency of the UE. For example, the base station may use a first CS BC of the multiple CS BCs reported by the UE as an initial operating frequency, or the base station randomly selects one CS BC from a combination of CS BCs reported by the UE as the initial operating frequency, or when multiple UEs report multiple CS BCs simultaneously, the base station needs to configure one initial operating frequency for the multiple UEs respectively according to hardware capabilities of the UEs.

Optionally, in order to improve uplink and downlink transmission capability and work efficiency, the initial working frequencies of the UEs are different from each other.

And S350, the UE transmits resources on the initial working frequency band combination according to the configuration information # A.

That is, the UE performs uplink transmission and downlink reception of resources according to all frequency domain resources band1 to band 4 and uplink and downlink radio frequency parameter # a configured by the base station and the initial operating frequency of the UE (for example, band 3+ band 4). Where a transmission includes transmission and reception of a resource, this is not a particular limitation of the present application.

For example, suppose that the CS BC frequency band combination reported by the UE is band1+ band2 and band 3+ band 4, and the configuration information # a sent by the base station to the UE includes: frequency domain resources of UE band1 to band 4, and uplink and downlink radio frequency parameters corresponding to band1 to band 4. For example, band1+ band2 supports uplink and/or downlink transmission, and band 3+ band 4 supports downlink transmission only. Meanwhile, the indication information # A indicates that the initial operating frequency of the UE is band 3+ band 4. Then, after receiving the base station RRC configuration signaling, UE transmits downlink resources on band 3+ band 4 according to the initial working efficiency.

S360, the base station sends the downlink control information DCI # A to the UE.

Correspondingly, the UE receives DCI # a from the base station.

The DCI # a is used to instruct the UE to switch among multiple CS BCs. I.e. instructing the UE to switch from the current initial operating frequency band combination to the configured other frequency band combination.

Illustratively, the UE is instructed to switch from the current BC (e.g., band 3+ band 4) to the other BC (e.g., band1+ band 2).

It should be noted that, when the current base station schedules the UE to switch the transmission band, the steps from step S310 to step S350 need to be executed again. In the embodiment of the application, because the base station has configured multiple groups of time-frequency domain resources for the UE, the base station can directly instruct the UE to perform fast switching on the multiple groups of time-frequency domain resources through DCI signaling. The implementation mode can save signaling overhead and improve the transmission performance of the system.

Optionally, when the base station instructs the UE to perform data transmission outside the time-frequency domain resources configured in step S330, the resources still need to be reconfigured according to the above steps S310 to S350.

S370, the UE switches between the CS BC according to the DCI # a. Namely, the UE is switched from the current initial working frequency band combination to the configured other frequency band combination according to the DCI # A.

Illustratively, the UE switches from the current BC (e.g., band 3+ band 4) to the other BC (e.g., band1+ band 2). Namely, UE switches from receiving resources on band 3+ band 4 to transmitting and/or receiving resources on band1+ band2.

In summary, in the implementation, a new frequency band combination CS BC is designed, so that the base station can perform configuration of time-frequency domain resources for the UE according to multiple CS BC reported by the UE at the same time. And the UE receives the configuration information # A issued by the base station and transmits and receives data on the initial working frequency band combination. Meanwhile, the base station can indicate the UE to switch on a plurality of groups of time-frequency resources through DCI # A signaling, so that the frequency spectrum resources can be flexibly used, and the transmission performance of the system is improved.

Fig. 4 is a schematic flowchart of a wireless communication method 400 provided in an embodiment of the present application, which is different from the method 300 in that in this implementation, a new BC type is designed, where the BC type includes one or more band pairs, and one band pair includes multiple segments of frequency domain resources, and two bands are allowed to flexibly allocate and utilize antenna port resources, and different band pairs can be flexibly switched through DCI signaling. The concrete implementation steps comprise:

s410, the base station transmits capability query information # a to the UE.

S420, the UE sends capability report information # a to the base station.

Correspondingly, the base station receives the capability report information # a from the UE.

Correspondingly, after receiving the capability request information from the base station, the UE reports the wireless transmission capability, that is, the multiple frequency band combinations BC supported by the base station, to the base station through the UECapabilityInformation signaling. The UECapabilityInformation signaling of the UE reporting capability includes BandCombination information for indicating m frequency band combinations BC supported by the UE, and the physical meaning of the frequency band combination indicates that the UE has concurrency or transmission capability on some frequency domain resources, and indicates that the UE supports concurrency or transmission on multiple frequency domain resources in the reported BC.

Illustratively, when the UE supports concurrent or selective transmission on the frequency domain resources corresponding to the two frequency band combinations, two frequency band combinations BC are reported to the base station at the same time, where one BC may include band1+ band2, and the other BC may include band 3+ band 4. Namely, the terminal equipment supports concurrent or selective transmission on the band1 to band 4 frequency bands.

It should be noted that the bands in CS BC can be multiplexed when combined. For example, band1+ band2 and band1+ band3 may be included in BC, and band1 is multiplexed. Meanwhile, each band pair group corresponds to a featureSet ID for indicating the radio frequency parameters corresponding to the UE under the current band combination.

It should be understood that the above band pair combination and the number of bands in the band pair are only exemplary, and should not limit the technical solution of the present application in any way.

S430, the base station transmits the configuration information # a to the UE.

The configuration information # a is used to indicate all frequency domain resources supported by the UE, and uplink and downlink radio frequency parameters # a of the UE. The configuration information # a is determined by the base station according to the received capability report information # a.

On the one hand, in the implementation manner, the base station is allowed to perform the configuration of the frequency domain resources to the UE according to all CS BC reported by the UE. Exemplarily, CS BC reported by the UE at the same time is band1+ band2+ band 3+ band 4+ band 5. Then, the base station configures the UE with all frequency domain resources, i.e., bands 1 to 5, contained in CS BC.

It can be understood that, based on the multiple band pairs reported by the UE at the same time, the base station may perform time-frequency resource configuration on the UE according to the multiple BCs reported by the UE at the same time. For example, the UE reports three band pairs, where the first band pair includes band1+ band2, the second band pair includes band 3+ band 4, the third band pair includes band5+ band6, and the base station may configure the time-frequency resources of band1 to band6 for the UE at the same time.

Optionally, the base station may also configure the time-frequency resources of band1 to band 4 or band3 to band6 for the UE at the same time. The present application does not specifically limit this, and it is only required to ensure that the number of frequency band combinations configured by the base station is greater than or equal to 2 and less than or equal to the number of frequency band combinations reported by the UE.

It should be noted that the technical solution of the present application is also applicable to a current mode of reporting a band pair by the UE, and a base station performs configuration of frequency domain resources for the UE based on the reported BC, that is, a frequency band combination is equal to 1.

For example, the frequency domain resources in the band pair reported by the UE may be repeated. That is, the UE may report two band pairs, where the first band pair contains band1+ band2 and the second band pair contains band1+ band 3. The network device may configure the terminal device according to the two band pairs, that is, configure the time-frequency resources of the terminal devices band1 to band 3.

Illustratively, the band in the same band pair may be the same frequency domain resource, that is, the situation that band1+ band1 is reported in the band pair may occur, which corresponds to the situation of intra-band CA, and vice versa.

It should be understood that the band pair reported by the terminal device is the currently defined BC combination, and the band pair in the BC represents a continuous segment of frequency domain resources in the frequency domain.

On the other hand, the base station also needs to configure uplink and downlink radio frequency parameters # a for the UE to perform uplink and downlink resource transmission. The base station may determine the unique corresponding featurecombination according to the BandCombination reported by the UE. The featurestation combination is used to indicate the radio frequency transmission indicator corresponding to the current BandCombination. That is, the featureSet index number can be obtained according to featureSet combination in BandCombination reported by the UE.

It should be understood that, in the UE capability reporting process, each band pair in the BC includes not only a specific operating frequency band, but also a feature set combination parameter for indicating a radio frequency indicator corresponding to uplink and downlink data transmission performed by the terminal device on the current band pair, that is, there is a one-to-one correspondence between the band pair and the feature set combination.

S440, the base station transmits the indication information # a to the UE.

Wherein, the indication information # a is used for indicating the initial operating frequency band combination of the UE. The initial working frequency band combination is one of a plurality of band pairs reported by the UE.

Specifically, the base station may configure some or all frequency domain resources included in multiple band pairs for the UE, and simultaneously need to indicate an initial operating band frequency of the terminal device, that is, an initial operating band combination.

It should be noted that the configuration information # a in step S430 and the indication information # a in step S440 may be transmitted together through RRC signaling or may be transmitted separately, and this is not particularly limited in this application.

For example, the base station may select a first band pair from the multiple band pairs as an initial operating frequency band according to an inherent sequential relationship of the multiple band combination band pairs reported by the UE; or the base station randomly selects one band pair from n band pairs configured for the UE as an initial working frequency band; or the base station configures a band pair for the UE as an initial working frequency band according to the current system load or the time-frequency resource use condition.

Illustratively, based on the base station configuring all frequency domain resources band1 to band5 for the UE in step S430, the base station needs to further indicate the initial operating frequency of the UE. That is, the base station further needs to select one band pair from multiple band pairs in the CS BC combination as the initial operating frequency of the UE. For example, the base station uses a first band pair of the multiple CS BCs reported by the UE as an initial operating frequency of the UE, or the base station randomly selects one multiple band pairs from the multiple band pairs as the initial operating frequency of the UE, or when multiple UEs report CS BC simultaneously, each CS BC includes multiple band pairs, and the base station needs to select one band pair as the initial operating frequency for the multiple UEs according to hardware capabilities of the UEs.

Optionally, in order to improve uplink and downlink transmission capability and work efficiency, the initial operating frequencies band pair of the UEs are different from each other.

And S450, the UE transmits the uplink and downlink resources on the initial working frequency band combination according to the indication information # a. That is, the UE performs uplink transmission and downlink reception of resources according to all frequency domain resources band1 to band5 and uplink and downlink radio frequency parameter # a configured by the base station, and the initial operating frequency of the UE (for example, band1+ band 2). Where a transmission includes transmission and reception of a resource, this is not a particular limitation of the present application.

For example, suppose that the CS BC frequency band combination reported by the UE is band1+ band2+ band 3+ band 4+ band5, and the configuration information # a sent by the base station to the UE includes: frequency domain resources of UE band1 to band5, and uplink and downlink radio frequency parameters corresponding to band1 to band 5. Suppose that Band1+ Band2 in Band pair supports uplink and/or downlink transmission, band1+ Band3 only supports downlink transmission, and Band 4+ Band5 only supports uplink transmission. Meanwhile, the indication information # a indicates that the initial operating frequency of the UE is band1+ band2. Then, after receiving the RRC configuration signaling of the base station, the UE transmits downlink resources on band1+ band2 according to the initial working efficiency.

S460, the base station transmits the downlink control information DCI # a to the UE.

Correspondingly, the UE receives DCI # a from the base station. I.e. instructing the UE to switch from the current initial operating band pair to the configured other band pair.

The DCI # a is used for indicating the UE to switch among a plurality of band pairs.

Illustratively, the UE is instructed to switch from the current band pair (e.g., band1+ band 2) to the other band pair (e.g., band1+ band 3).

It should be noted that, when the current base station schedules the UE to switch the transmission frequency band, the steps from step S410 to step S450 need to be executed again. In the embodiment of the application, because the base station has configured multiple groups of time-frequency domain resources for the UE, the base station can directly instruct the UE to perform fast switching on the multiple groups of time-frequency domain resources through DCI signaling. The implementation mode can save signaling overhead and improve the transmission performance of the system.

Optionally, when the base station instructs the UE to perform data transmission outside the time-frequency domain resources configured in step S430, the resources still need to be reconfigured according to the above steps S410 to S450.

S470, the UE switches among a plurality of band pairs according to the DCI # a. I.e. instructing the UE to switch from the current initial operating band pair to the other configured band pairs.

Illustratively, UE switches from the current band pair (e.g., band1+ band 2) to the other band pair (e.g., band1+ band 3). That is, UE switches from transmitting and/or receiving resources on band1+ band2 to transmitting resources on band1+ band 3.

In summary, in the implementation, a new frequency band combination CS BC is designed, which includes multiple band pairs, and is used for the UE to flexibly switch among multiple frequency band combinations, so that the base station can perform the configuration of the time-frequency domain resource on the UE according to the multiple band pairs reported by the UE at the same time. And the UE receives the configuration information # a issued by the base station and transmits and receives data on the initial working frequency band combination. Meanwhile, the base station can indicate the UE to switch over a plurality of groups of time frequency resources band pair through DCI # a signaling, so that the frequency spectrum resources can be flexibly used, and the transmission performance of the system is improved.

Fig. 5 is a schematic flow chart of a wireless communication method 500 provided by an embodiment of the present application, which is different from the method 300 in that the implementation defines two new BC types, for example, UL BC and DL BC. Namely, the UE reports the uplink BC and the downlink BC respectively, so that the uplink BC and the downlink BC reporting mode can be decoupled, and the base station flexibly configures the uplink radio frequency parameters and the downlink radio frequency parameters of the UE according to the received UL BC and/or DL BC, thereby realizing the flexible configuration of the uplink band and the downlink band. The concrete implementation steps comprise:

s510, the base station transmits capability query information #1 to the UE.

Correspondingly, the UE receives capability query information #1 from the base station.

Here, the capability inquiry information #1 is used to inquire about the capability of the carrier aggregation CA of the UE.

S520, the UE sends the capability report information #1 to the base station.

Correspondingly, the base station receives the capability report information #1 from the UE.

The capability report information #1 includes a frequency band combination UL BC and/or DL BC supported by the UE.

It should be noted that UL BC and DL BC may be reported separately or simultaneously. In addition, the number of UL BC or DL BC band combinations is not specifically limited in the embodiments of the present application.

Correspondingly, after receiving the capability request information from the base station, the UE may report the radio transmission capability, i.e. one or more DL BCs and/or UL BCs supported by the base station, to the base station through the UECapabilityInformation signaling. The UE capacity information signaling of the UE reporting capability comprises band combination information used for indicating m frequency band combinations supported by the UE, and the physical meaning of the frequency band combination indicates that the UE has concurrency or transmission capability on some frequency domain resources and is used for indicating that the UE supports concurrency or transmission on a plurality of frequency domain resources in the reported BC.

Illustratively, when the UE supports concurrency or selective transmission on the frequency domain resources corresponding to the two frequency band combinations, two DL BCs are reported to the base station at the same time, where one DL BC may contain band1+ band2 and the other DL BC may contain band 3+ band 4. I.e. the terminal equipment supports receiving data on the band1 to band 4 frequency bands.

The UL BC and/or DL BC reported by the UE have a priority or an internal ordering relationship, and specifically, the BandCombination in the BandCombination list has an internal ordering relationship from the first to the last.

For example, the UE may report DL BC and UL BC simultaneously, respectively, with the number of DL BC and UL BC greater than or equal to 1. Alternatively, the UE may report only DL BCs, the number of DL BCs being greater than or equal to 1. Or, the UE may report only UL BC, where the number of UL BC is greater than or equal to 1. The base station may jointly configure the UE for uplink and downlink transmission according to the received UL BC and DL BC, or configure a DL-only or UL-only cell according to the received DL BC or UL BC alone.

It should be noted that the number of bands and the specific bands in DL BC and UL BC are only exemplary, and do not limit the technical solution of the present application.

Table 1 shows the BandCombination frequency band combinations reported by the UE. As shown in table 1, two new UE-supported band combinations, namely, UL BC band combination and DL BC band combination, are designed.

And aiming at the UL BC frequency band combination, the method is only used for configuring the uplink frequency band, and the number of the uplink frequency band is more than or equal to 1. In the currently defined BC frequency band combination, the number of bands in the uplink frequency band is less than or equal to 2. Similarly, for the DL BC band combination, only the downlink band is configured, and the number of the downlink bands is greater than or equal to 1. In the currently defined BC band combination, the number of the downlink band of the CA is greater than or equal to 2, and the number of the downlink band of the SUL is equal to 1. The UL BC and DL BC frequency band combination provided in the embodiment of the present application is independent of the currently defined BC frequency band combination, and enables uplink and downlink BandCombination reporting modes to be decoupled.

TABLE 1

Frequency band combination	Current BC band combining	UL BC frequency band combination	DL BC frequency band combination
				Uplink frequency band	≤2	≥1	\
Downlink frequency band	≥2(CA)，＝1(SUL)	\	≥1

On one hand, compared with the currently defined BC frequency band combination uplink and downlink unified configuration, in the UL BC or DL BC frequency band combination newly designed in the embodiment of the present application, it is supported to configure uplink or downlink frequency bands separately, that is, the number of the uplink and downlink frequency bands is respectively greater than or equal to 1, so that only uplink or only downlink carriers (cells) can be configured, and the flexibility of carrier (cell) configuration is increased.

On the other hand, in the embodiment of the present application, the newly designed type of the UL BC or DL BC band combination also breaks the limitation of the current medium BC band combination on the number of uplink or downlink bands, and the number of uplink or downlink bands is greater than or equal to 1.

S530, the base station transmits configuration information #1 to the UE.

Correspondingly, the UE receives configuration information #1 from the base station.

The configuration information #1 is used to indicate frequency domain resources corresponding to at most one DL BC or at most one UL BC supported by the UE, and uplink and/or downlink radio frequency parameters #1 of the UE. The configuration information #1 is determined by the base station according to the received capability report information #1.

That is, after receiving the capability reporting information #1, the base station determines the UL BC and/or DL BC supported by the UE, and performs resource configuration on the UE according to the UL BC and/or DL BC.

In one aspect, in the implementation manner, the base station selects at most one DL BC and/or at most one UL BC from all UL BC and/or DL BC reported by the UE to configure the frequency domain resource of the UE. Illustratively, when the UE reports two UL BC and/or two DL BC simultaneously, one of the DL BC contains band1+ band2 and the other DL BC contains band 3+ band 4. Then, the base station may configure the UE with band1+ band2 in DL BC. Likewise, one of UL BC contains band1+ band3 and the other UL BC contains band 3+ band 4. Then, the base station may configure band1+ band3 in UL BC for the UE.

Optionally, UE may report one UL BC including band1+ band 3+ band 4, while defining multiple sets of band pair, such as band1+ band3, band 3+ band 4. Similarly, UE may report one DL BC including band1+ band2+ band 3+ band 4, and define multiple sets of band pair, e.g., band1+ band2, band 3+ band 4. Each band pair will correspond to a featureSet ID for indicating the radio parameters corresponding to the UE in the current band combination.

On the other hand, the base station also needs to configure uplink and/or downlink radio frequency parameters #1 for the UE to perform uplink and/or downlink resource transmission. The base station may determine the unique corresponding featurecombination according to the BandCombination reported by the UE. The feature set combination is used to indicate the radio frequency transmission index corresponding to the current BandCombination. That is, the featureSet index number can be obtained according to featureSet combination in BandCombination reported by the UE.

It should be understood that, in the UE capability reporting process, each UL BC and/or DL BC includes not only a specific operating frequency band, but also a featurestopunction parameter for indicating a radio frequency indicator corresponding to uplink and downlink data transmission performed by the terminal device on the current UL BC and/or DL BC, that is, there is a one-to-one correspondence between the UL BC and/or DL BC and the featurestopunction.

In the embodiment of the present application, the bearer type of the configuration information #1 may be, but is not limited to, radio resource control signaling RRC signaling.

S540, the UE transmits the uplink and downlink resources according to the configuration information #1.

Illustratively, the DL BC frequency band combinations reported by the UE are band1+ band2 and band 3+ band 4, and the configuration information #1 sent by the base station to the UE may include: the frequency domain resource of UE band1+ band2, and the downlink radio frequency parameter #1 corresponding to band1+ band2. And then, after receiving the base station RRC configuration signaling, the UE transmits the downlink resource based on band1+ band2 corresponding to DL BC.

The transmission of the resource includes transmission and reception of the resource, which is not specifically limited in this application.

In summary, in the implementation, two new frequency band combinations DL BC and UL BC are designed, so that the UE can flexibly configure the uplink and downlink bands.

In the embodiment of the application, a new BC combination including UL BC and DL BC is defined, so that uplink and downlink BC reporting modes are decoupled, and uplink and downlink flexible spectrum access is realized. And the UE is indicated to be flexibly switched in a plurality of configured bands through the DCI signaling, so that the experience rate of uplink and downlink users and the system capacity are improved. In this implementation, the UE may be more adaptive according to the channel condition above the arabic UL BC or DL BC.

Fig. 6 is a schematic flowchart of a wireless communication method 600 provided in this embodiment, and is different from the method 300 in that the implementation defines multiple new frequency band combination reporting methods, so as to enable fast handover between one or multiple serving cell groups or serving cells or partial Bandwidths (BWPs), and implement capability decoupling between the fast handover and CA, dual Connectivity (DC), multiple Connectivity (MC), and Multiple Band Single Cell (MBSC).

In order to more clearly understand the technical solution of the present application, the following related terms are briefly introduced

Carrier Aggregation (CA) refers to a user being able to transmit on multiple frequency bands or carriers or cells simultaneously.

Dual Connectivity (DC) means that a user can configure two cell groups, i.e., a master cell group (MSG) and a Secondary Cell Group (SCG), simultaneously. NRDC is NR dual link, MRDC is multi-system dual link.

Multi-connection (MC) means that a user can configure more than two cell groups, i.e. MSG and multiple SCGs, at the same time. NRMC is NR multi-link, MRMC is multi-system multi-link.

A multi-band single cell (MBSC) refers to a single cell containing multiple non-contiguous frequency bands.

The concrete implementation steps comprise:

s610, the UE sends the first frequency band set to the base station.

Correspondingly, the base station receives a first frequency band set from the UE.

The first frequency band set includes one or more frequency bands or carriers, or the first frequency band set includes cells or cell groups or BWPs corresponding to the one or more frequency bands or carriers.

It should be noted that the number of frequency bands included in the first frequency band set is greater than or equal to 3, and/or the number of carriers included in the first frequency band set is greater than or equal to 4.

Illustratively, when the first frequency band set includes 3 frequency bands, it is TDD/FDD, TDD/FDD/SDL/SUL, and TDD/FDD/SDL/SUL, respectively. When the first frequency band set comprises 4 frequency bands, the first frequency band set is TDD/FDD, TDD/FDD/SDL/SUL and TDD/FDD/SDL/SUL respectively; when the first band set includes 5 bands, they are respectively TDD/FDD, TDD/FDD/SDL/SUL, and TDD/FDD/SDL/SUL. The above description is merely exemplary in nature and should not be construed as limiting the present disclosure in any way.

S620, the UE transmits one or more frequency band subsets to the base station.

Correspondingly, the base station receives one or more frequency band subsets from the UE.

The frequency bands or carriers included in each frequency band subset are subsets of the frequency bands or carriers in the first frequency band set; or, the cell or cell group or BWP corresponding to the frequency band or carrier included in each frequency band subset is a subset of the cell or cell group or BWP corresponding to the frequency band or carrier in the first frequency band set.

Illustratively, the UE reports two frequency band subsets, which are a second frequency band set and a third frequency band set. The second frequency band set and the third frequency band set are subsets of the first frequency band set, that is, the second frequency band set and the third frequency band set belong to corresponding partial frequency domain resources in the first frequency band set.

It should be noted that the number of frequency bands included in each frequency band subset is greater than or equal to 1. The frequency bands comprised by the different frequency band subsets may be different. Different frequency band subsets may contain partially the same frequency band.

Each frequency band subset may be, for example, a non-CA single frequency band, or a CA frequency band set. That is, each frequency band subset may be used for single carrier transmission or for simultaneous transmission of multiple carriers.

Optionally, each frequency band subset may be a non-DC single frequency band, or may be a DC frequency band set.

Optionally, each frequency band subset may be a non-MC single frequency band, or may be an MC frequency band set.

Optionally, each frequency band subset may be a non-MBSC single frequency band or an MBSC frequency band set

It should be understood that the above description is only exemplary, and should not be construed as limiting the technical solutions of the present application in any way.

S630, the UE sends the user capability characteristic corresponding to the first frequency band set to the base station.

Correspondingly, the base station receives the user capability characteristics corresponding to the first frequency band set from the UE.

For example, the current user may report its CA, DC (including NRDC, MRDC), MC (including NRMC, MRMC), SUL, MBSC, carrier/band/cell group handover, and other spectrum related capabilities through the band combination BC. The band combination BC may include specific bands (e.g., 3.5GHz and 1.8GHz in a bandList band list), a capability set featurecombination for transmission by a user on each band (e.g., the user can transmit on each band or carrier), a carrier aggregation by the user on the band set, or a dual connectivity capability set ca-parameters nr (e.g., whether parallel transmission of PUSCH and SRS on different carriers is supported), and so on.

The method for reporting the frequency band set and the related capability characteristics in steps S610 to S630 by the UE is described below.

In a possible implementation manner, for the first frequency band set, a feature set group (featurecombination) corresponding to BC reported by the UE needs to satisfy at least one of the following conditions: the feature aggregation combination includes all bands and/or carriers in a band set, the feature aggregation combination includes a band characteristic set (feature band) corresponding to a plurality of bands, the feature aggregation combination includes a carrier aggregation parameter set (ca-parameters nr) corresponding to one or more band subsets, the feature aggregation combination includes a delay required for switching from one band subset to another band subset, and the like.

The featuresetperbands in the above conditions correspond to the frequency bands included in the first frequency band set one to one, and each featuresetperbands includes the transmission bandwidth of the user on the frequency band, the maximum modulation order and other capabilities. The ca-parametersnrs correspond one-to-one to the one or more frequency band subsets. Each ca-parameternr contains a frequency band specifically contained in one subset of frequency bands. For example, the frequency band subset is selected from the first frequency band set by means of a bitmap.

It should be noted that, for the featurestatcombination reported by the UE and the optional user capability included in the featurestatcombination, the featurestatcombination may be reported together in uplink and downlink, or may be reported independently in uplink and downlink.

In another possible implementation manner, for the first frequency band set, multiple characteristic set groups (featurecombination) corresponding to the BC reported by the UE need to satisfy at least one of the following conditions: each featurephotosynthesizing corresponds to a frequency band subset of the first frequency band set, a featurephotosynthesizing comprises a time delay required for switching one frequency band subset to another frequency band subset, and a featurephotosynthesito comprises featurephotos corresponding to a plurality of frequency bands, wherein the featurephotos corresponds to the frequency bands contained in the frequency band subset of the first frequency band set.

Wherein, if the different frequency band subsets of the first frequency band set contain the same frequency band, then the featuresipper band corresponding to the same frequency band should be the same.

It should be noted that, for the featurestatcombination reported by the user and the arbitrary user capability included in the feature settlements, the feature settlements may be reported together in uplink and downlink, or may be reported together in uplink and downlink.

S640, the base station sends configuration information to the UE.

Correspondingly, the UE receives configuration information from the base station.

It should be noted that, for all frequency bands or carriers in the first frequency band set, when the base station configures the serving cell group and/or the serving cell and/or the BWP for the UE, no matter whether these serving cell group and/or the serving cell and/or the BWP are activated, it is necessary to comply with the user capability included in the featurecommunication of the corresponding frequency band.

In one possible implementation manner, the base station configures, activates, and schedules the serving cell combination and/or the serving cell and/or the BWP of the UE, and needs to:

for example, the frequency band or carrier corresponding to the serving cell combination/serving cell and/or BWP that can be simultaneously activated by the base station is a frequency band subset, and the user capability conveyed by the "carrier aggregation parameter group" corresponding to the frequency band subset is required for the serving cell combination/serving cell and/or BWP that can be simultaneously activated by the user, that is, the base station implements the fast activation and deactivation of the serving cell combination/serving cell and/or BWP through the scheduling of MAC CE signaling. That is, the user receives the scheduling signaling of the MAC CE of the base station, and the user switches from one or more serving cell combinations/or serving cells and/or BWPs corresponding to one frequency band subset to one or more serving cell combinations/or serving cells and/or BWPs corresponding to another frequency band subset. By the method, the combination of the serving cells and/or the number of the serving cells and/or the BWP activated by the user at the same time are less, and the fast switching among the carrier subsets can be realized.

It should be noted that, for the configuration, activation and scheduling of the serving cell combination/serving cell and/or BWP, uplink and downlink may be configured, activated and scheduled together, or may be configured, activated and scheduled independently. This is not a specific limitation in the present application.

For example, the base station can activate all configured serving cell combinations/serving cells and/or BWPs simultaneously, and the serving cell combinations/serving cells and/or BWPs transmitted by the user simultaneously need to follow the user capability conveyed by the "carrier aggregation parameter group" corresponding to one frequency band subset, that is, the base station implements fast handover of the user serving cell combinations/serving cells and/or BWPs through scheduling of DCI signaling. That is, the user receives the scheduling signaling of the DCI from the base station, and the user switches from one or more serving cell combinations/or serving cells and/or BWPs corresponding to one frequency band subset to one or more serving cell combinations/serving cells and/or BWPs corresponding to another frequency band subset. By this method, the number of the service cell combinations and/or the number of the service cells simultaneously activated by the user are large, but compared with the former case, the method can realize the fast switching among the carrier subsets which is faster.

It should be noted that, for the above serving cell combination/serving cell and/or BWP configuration, activation and scheduling, uplink and downlink may be configured, activated and scheduled together, or may be configured, activated and scheduled independently. This is not a particular limitation of the present application.

In another possible implementation manner, the base station needs to configure, activate, and schedule the cell and/or BWP of the UE to satisfy:

for example, the frequency band or carrier corresponding to the serving cell combination/serving cell and/or BWP capable of being simultaneously activated by the base station is a frequency band subset, and the serving cell combination/serving cell and/or BWP simultaneously activated by the user needs to comply with the user capability conveyed by the "feature set group" corresponding to this frequency band subset, that is, the quick activation and deactivation of the serving cell combination/serving cell and/or BWP is realized through the scheduling of MAC CE signaling. That is, the user receives the scheduling signaling of the MAC CE of the base station, and the user switches from one or more serving cell combinations/or serving cells and/or BWPs corresponding to one frequency band subset to one or more serving cell combinations/or serving cells and/or BWPs corresponding to another frequency band subset. By the method, the combination of the service cells activated by the user at the same time and/or the number of the service cells is less, and the quick switching among the carrier subsets can be realized.

It should be noted that, for the configuration, activation, and scheduling of the serving cell combination and/or the serving cell and/or the BWP, uplink and downlink may be configured, activated, and scheduled together, or may be configured, activated, and scheduled independently. This is not a particular limitation of the present application.

For example, the base station can activate all configured serving cell combinations/serving cells and/or BWPs simultaneously, and the serving cell combinations/serving cells and/or BWPs transmitted by the user simultaneously need to comply with the user capability conveyed by the "feature set" corresponding to one frequency band subset, i.e. the fast handover of the serving cell combinations/serving cells and/or BWPs is realized through the scheduling of DCI signaling. That is, the user receives the scheduling signaling of the DCI from the base station, and the user switches from one or more serving cell combinations/or serving cells and/or BWPs corresponding to one frequency band subset to one or more serving cell combinations/serving cells and/or BWPs corresponding to another frequency band subset. By this method, the combination of serving cells and/or the number of serving cells activated by the user at the same time is large, but compared with the former case, the fast switching between the carrier subsets can be realized more quickly.

S650, the base station sends a first signaling to the UE.

Correspondingly, the UE receives the first signaling from the base station.

Wherein the first signaling is used for instructing the UE to switch from the second frequency band set to the third frequency band set.

For example, the first signaling may be DCI or MAC CE, which is not specifically limited in this application.

S660, the UE is switched from the second frequency band set to the third frequency band set according to the first signaling.

In summary, in the implementation manner, a plurality of new frequency band combination reporting methods are designed, so that fast handover between one or more serving cell groups or serving cells or BWPs is enabled, and capability decoupling between fast handover and CA, DC, MC, and MBSC is achieved.

The wireless communication method side embodiment of the present application is described in detail above with reference to fig. 2 to 6, and the wireless communication apparatus side embodiment of the present application will be described in detail below with reference to fig. 7 and 8. It is to be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore reference may be made to the preceding method embodiments for parts which are not described in detail.

Fig. 8 is a schematic block diagram of a wireless communication device provided by an embodiment of the present application. As shown in fig. 8, the communication device 1000 may include a processing unit 1100 and a transceiving unit 1200.

Alternatively, the communication apparatus 1000 may correspond to the terminal device in the foregoing method embodiments, and for example, may be the terminal device, or a component (such as a circuit, a chip, or a system of chips, etc.) configured in the terminal device.

It should be understood that the communication apparatus 1000 may correspond to a terminal device in the method 200, the method 300, the method 400, the method 500, and the method 600 according to the embodiments of the present application, and the communication apparatus 1000 may include a unit for performing the method performed by the terminal device in the method 200 in fig. 2, or the method 300 in fig. 3, or the method 400 in fig. 4, or the method 500 in fig. 5, or the method 600 in fig. 6. Also, the units in the communication device 1000 and the other operations and/or functions described above are intended to implement the corresponding flows of the method 200 in fig. 2 or the method 300 in fig. 3 or the method 400 in fig. 4 or the method 500 in fig. 5 or the method 600 in fig. 6, respectively.

Illustratively, the transceiving unit 1200 is configured to send, by the terminal device, first information to the network device, where the first information includes indication information of m frequency band combinations; the terminal equipment receives second information from the network equipment, wherein the second information comprises frequency domain resources and radio frequency parameters corresponding to each frequency band combination in n frequency band combinations, the n frequency band combinations belong to m frequency band combinations, m is greater than or equal to n, and n is greater than or equal to 2,m and n is a positive integer; the terminal device communicates in a first frequency band combination of the n frequency band combinations based on the second information.

Optionally, the transceiver unit 1200 is further configured to receive, by the terminal device, third information from the network device, where the third information is used to instruct the terminal device to switch to a second frequency band combination, where the second frequency band combination is one of the n frequency band combinations;

and the processing unit 1100 is configured to switch, by the terminal device, to the second frequency band combination according to the third information.

Optionally, the transceiver unit 1200 is further configured to receive, by the terminal device, indication information from the network device, where the indication information is used to indicate that the initial operating frequency band combination of the terminal device is the first frequency band combination.

Optionally, the first frequency band combination is a first one of the n frequency band combinations; or the first band combination is any one of the n band combinations.

Optionally, each of the n frequency band combinations is used to indicate an uplink transmission capability or a downlink transmission capability of the terminal device.

It is further understood that when the communication device 1000 is a terminal device, the transceiver unit 1200 in the communication device 1000 may be implemented by a transceiver, for example, may correspond to the transceiver 2020 in the communication device 2000 shown in fig. 8, and the processing unit 1100 in the communication device 1000 may be implemented by at least one processor, for example, may correspond to the processor 2010 in the communication device 2000 shown in fig. 8.

It should also be understood that, when the communication device 1000 is a chip or a chip system configured in a terminal device, the transceiver unit 1200 in the communication device 1000 may be implemented by an input/output interface, a circuit, or the like, and the processing unit 1100 in the communication device 1000 may be implemented by a processor, a microprocessor, an integrated circuit, or the like integrated on the chip or the chip system.

Alternatively, the communication apparatus 1000 may correspond to the network device in the foregoing method embodiments, and for example, may be a network device or a component (e.g., a circuit, a chip or a system of chips, etc.) configured in a network device.

It should be understood that the communication apparatus 1000 may correspond to the network device in the method 200, the method 300, the method 400, the method 500, and the method 600 according to the embodiments of the present application, and the communication apparatus 1000 may include a unit for performing the method performed by the network device in the method 200 in fig. 2, or the method 300 in fig. 3, or the method 400 in fig. 4, or the method 500 in fig. 5, or the method 600 in fig. 6. Also, the units in the communication device 1000 and the other operations and/or functions described above are intended to implement the corresponding flows of the method 200 in fig. 2 or the method 300 in fig. 3 or the method 400 in fig. 4 or the method 500 in fig. 5 or the method 600 in fig. 6, respectively.

Illustratively, the transceiving unit 1200 is configured to receive, by the network device, first information from the terminal device, where the first information includes information indicating m frequency band combinations.

The processing unit 1100 is configured to determine, by the network device, second information according to the first information, where the second information includes frequency domain resources and radio frequency parameters corresponding to each frequency band combination of the n frequency band combinations.

The transceiving unit 1200 is further configured to send, by the network device, second information to the terminal device, so as to perform communication in a first frequency band combination of the n frequency band combinations based on the second information. The n frequency band combinations belong to the m frequency band combinations, m is larger than or equal to n, and n is larger than or equal to 2,m and n are positive integers.

Optionally, the transceiver unit 1200 is further configured to send, by the network device, third information to the terminal device, where the third information is used to instruct the terminal device to switch to a second frequency band combination, where the second frequency band combination is one of the n frequency band combinations.

Optionally, the transceiver unit 1200 is further configured to send, by the network device, indication information to the terminal device, where the indication information is used to indicate that the initial operating frequency band combination of the terminal device is the first frequency band combination.

Optionally, the first operating frequency band combination is a first one of the n frequency band combinations; or the first operating frequency band combination is any one of the n frequency band combinations.

It is further understood that when the communication device 1000 is a network device, the transceiver unit 1200 in the communication device 1000 may be implemented by a transceiver, for example, may correspond to the transceiver 2020 in the communication device 2000 shown in fig. 8, and the processing unit 1100 in the communication device 1000 may be implemented by at least one processor, for example, may correspond to the processor 2010 in the communication device 2000 shown in fig. 8.

It should also be understood that, when the communication device 1000 is a chip or a system of chips configured in a network device, the transceiver unit 1200 in the communication device 1000 may be implemented by an input/output interface, a circuit, etc., and the processing unit 1100 in the communication device 1000 may be implemented by a processor, a microprocessor, an integrated circuit, etc., integrated on the chip or the system of chips.

Fig. 8 is another schematic block diagram of a communication device 2000 provided in an embodiment of the present application. As shown in fig. 8, the communications device 2000 includes a processor 2010, a transceiver 2020, and a memory 2030. Wherein the processor 2010, the transceiver 2020, and the memory 2030 are in communication with each other via the internal connection path, the memory 2030 is configured to store instructions, and the processor 2010 is configured to execute the instructions stored in the memory 2030 to control the transceiver 2020 to transmit and/or receive signals.

It should be understood that the communication device 2000 may correspond to the network device or the terminal device in the above method embodiments, and may be configured to perform each step and/or flow performed by the network device or the terminal device in the above method embodiments. Alternatively, the memory 2030 may include a read-only memory and a random access memory, and provide instructions and data to the processor. The portion of memory may also include non-volatile random access memory. The memory 2030 may be a separate device or may be integrated into the processor 2010. The processor 2010 may be configured to execute the instructions stored in the memory 2030, and when the processor 2010 executes the instructions stored in the memory, the processor 2010 is configured to execute the steps and/or processes of the method embodiments corresponding to the network device or the terminal device.

Exemplarily, the transceiving unit 1200 is configured to send, by the terminal device, first information to the network device, where the first information includes indication information of m frequency band combinations; the terminal equipment receives second information from the network equipment, wherein the second information comprises frequency domain resources and radio frequency parameters corresponding to each frequency band combination in n frequency band combinations, the n frequency band combinations belong to m frequency band combinations, m is greater than or equal to n, and n is greater than or equal to 2,m and n is a positive integer; the terminal device communicates in a first frequency band combination of the n frequency band combinations based on the second information.

Optionally, the communication device 2000 is the terminal device in the previous embodiment.

Optionally, the communication device 2000 is a network device in the foregoing embodiment.

The transceiver 2020 may include a transmitter and a receiver, among other things. The transceiver 2020 may further include one or more antennas. The processor 2010 and the memory 2030 and the transceiver 2020 may be devices integrated on different chips. For example, the processor 2010 and the memory 2030 may be integrated in a baseband chip and the transceiver 2020 may be integrated in a radio frequency chip. The processor 2010 and the memory 2030 and the transceiver 2020 may also be integrated devices on the same chip. This is not a limitation of the present application.

Alternatively, the communication device 2000 is a component configured in a terminal device, such as a circuit, a chip system, and the like.

Alternatively, the communication device 2000 is a component configured in a network device, such as a circuit, a chip system, and the like.

The transceiver 2020 may also be a communication interface, such as an input/output interface, a circuit, or the like. The transceiver 2020 may be integrated with the processor 2010 and the memory 2020 on the same chip, such as a baseband chip.

It should be understood that in the embodiments of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. The general purpose processor may be a microprocessor, any conventional processor, etc.

It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The method steps in the embodiments of the present application may be implemented by hardware, or may be implemented by software instructions executed by a processor. The software instructions may be comprised of corresponding software modules that may be stored in random access memory, flash memory, read only memory, programmable read only memory, erasable programmable read only memory, electrically erasable programmable read only memory, registers, a hard disk, a removable hard disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a network device or a terminal device. Of course, the processor and the storage medium may reside as discrete components in a network device or a terminal device.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network appliance, a user device, or other programmable apparatus. The computer program or instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program or instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire or wirelessly. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that integrates one or more available media. The usable medium may be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; optical media such as digital video disks; but also semiconductor media such as solid state disks. The computer readable storage medium may be volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

It should be understood that in the above embodiments, the embodiments may be independent solutions or may be combined according to the inherent logic, and the solutions all fall into the protection scope of the present application. The terminal device and/or the network device may perform some or all of the steps in various embodiments. These steps or operations are merely examples, and other operations or variations of various operations may be performed herein. Further, the various steps may be performed in a different order presented in the embodiments, and not all of the operations in the embodiments of the application may be performed.

It is to be understood that the various numerical references referred to in the embodiments of the present application are merely for convenience of description and distinction and are not intended to limit the scope of the embodiments of the present application. The sequence numbers of the above processes do not mean the sequence of execution, and the execution sequence of each process should be determined by its function and inherent logic, and should not limit the implementation process of the embodiment of the present application.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components can reside within a process and/or thread of execution and a component can be localized on one computer and/or distributed between 2 or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with each other with a local system, distributed system, and/or across a network such as the internet with other systems by way of the signal).

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

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

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method of wireless communication, comprising:

the method comprises the steps that a terminal device sends first information to a network device, wherein the first information comprises indication information of m frequency band combinations;

the terminal device receives second information from the network device, wherein the second information includes frequency domain resources and radio frequency parameters corresponding to each frequency band combination of n frequency band combinations, the n frequency band combinations belong to the m frequency band combinations, m is greater than or equal to n, and n is greater than or equal to 2,m and n is a positive integer;

and the terminal equipment communicates in a first frequency band combination in the n frequency band combinations based on the second information.

2. The method of claim 1, further comprising:

the terminal device receives third information from the network device, where the third information is used to instruct the terminal device to switch to a second frequency band combination, and the second frequency band combination is one of the n frequency band combinations;

and the terminal equipment is switched to the second frequency band combination according to the third information.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

and the terminal equipment receives indication information from the network equipment, wherein the indication information is used for indicating that the initial working frequency band combination of the terminal equipment is the first frequency band combination.

4. The method according to any one of claims 1 to 3,

the first band combination is a first one of the n band combinations; or

The first frequency band combination is any one of the n frequency band combinations.

5. The method according to any of claims 1 to 4, wherein each of the n frequency band combinations is used to indicate uplink transmission capability or downlink transmission capability of the terminal device.

6. A method of wireless communication, comprising:

the method comprises the steps that network equipment receives first information from terminal equipment, wherein the first information comprises indication information of m frequency band combinations;

and the network equipment sends second information to the terminal equipment, wherein the second information comprises frequency domain resources and radio frequency parameters corresponding to each frequency band combination in n frequency band combinations, the n frequency band combinations belong to the m frequency band combinations, m is greater than or equal to n, and n is greater than or equal to 2,m and n is a positive integer.

7. The method of claim 6, further comprising:

and the network equipment sends third information to the terminal equipment, wherein the third information is used for indicating the terminal equipment to be switched to a second frequency band combination, and the second frequency band combination is one of the n frequency band combinations.

8. The method according to claim 6 or 7, further comprising:

and the network equipment sends indication information to the terminal equipment, wherein the indication information is used for indicating that the initial working frequency band combination of the terminal equipment is the first frequency band combination.

9. The method according to any one of claims 6 to 8,

the first operating frequency band combination is a first one of the n frequency band combinations; or

The first operating frequency band combination is any one of the n frequency band combinations.

10. The method according to any of claims 6 to 9, wherein each of the n frequency band combinations is used to indicate uplink transmission capability or downlink transmission capability of the terminal device.

11. A wireless communication apparatus, comprising a transceiver unit configured to:

and the terminal equipment carries out communication in a first frequency band combination in the n frequency band combinations based on the second information.

12. The apparatus of claim 11,

the transceiver unit is further configured to receive, by the terminal device, third information from the network device, where the third information is used to instruct the terminal device to switch to a second frequency band combination, and the second frequency band combination is one of the n frequency band combinations;

the device further comprises: and the processing unit is used for switching the terminal equipment to the second frequency band combination according to the third information.

13. The apparatus of claim 11 or 12,

the transceiver unit is further configured to receive, by the terminal device, indication information from the network device, where the indication information is used to indicate that an initial operating frequency band combination of the terminal device is the first frequency band combination.

14. The device according to any one of claims 1 to 13,

the first band combination is a first one of the n band combinations; or

15. The apparatus of any of claims 11 to 14, wherein each of the n frequency band combinations is configured to indicate an uplink transmission capability or a downlink transmission capability of the terminal device.

16. A wireless communications apparatus, comprising: a transceiver unit, configured to receive, by a network device, first information from a terminal device, where the first information includes indication information of m frequency band combinations;

the transceiver unit is further configured to send, by the network device, second information to the terminal device, where the second information includes frequency domain resources and radio frequency parameters corresponding to each of n frequency band combinations, where the n frequency band combinations belong to the m frequency band combinations, m is greater than or equal to n, and n is greater than or equal to 2,m and n is a positive integer.

17. The apparatus of claim 16,

the transceiver unit is further configured to send, by the network device, third information to the terminal device, where the third information is used to instruct the terminal device to switch to a second frequency band combination, and the second frequency band combination is one of the n frequency band combinations.

18. The apparatus of claim 16 or 17,

the transceiver unit is further configured to send, by the network device, indication information to the terminal device, where the indication information is used to indicate that the initial operating frequency band combination of the terminal device is the first frequency band combination.

19. The apparatus of any one of claims 16 to 18,

the first operating frequency band combination is a first one of the n frequency band combinations; or alternatively

20. The apparatus of any of claims 16 to 19, wherein each of the n frequency band combinations is configured to indicate an uplink transmission capability or a downlink transmission capability of the terminal device.

21. A communications apparatus, comprising: a processor and interface circuitry for receiving and transmitting signals to or from other communication devices than the communication device, the processor being operable by logic circuitry or executing code instructions to implement the method of any of claims 1 to 5.

22. A communication device comprising a processor and interface circuitry configured to receive signals from a communication device other than the communication device and transmit the signals to or from the processor to the communication device other than the communication device, the processor being configured to implement the method of any one of claims 6 to 10 by logic circuitry or executing code instructions.

23. A communication system, comprising:

the terminal device of any one of claims 11 to 15; and/or

A network device according to any one of claims 16 to 20.

24. A chip, comprising: a processor for calling and running a computer program from a memory, so that a terminal device on which the chip is installed performs the method of any one of claims 1 to 5, and/or so that a terminal device on which the chip is installed performs the method of any one of claims 6 to 10.

25. A computer program, characterized in that it implements the method according to any one of claims 1 to 10 when executed by a communication device.

26. A computer-readable storage medium, comprising:

the computer-readable storage medium having stored thereon a computer program which, when executed, causes the computer to perform the method of any one of claims 1 to 5; or cause the computer to perform the method of any of claims 6 to 10.

27. A communication system comprising a communication device according to any of claims 11 to 15 or 21 and a communication device according to any of claims 16 to 20 or 22.