Carrier aggregation method, device and system

Abstract

The embodiments of the present application provide a carrier aggregation method, device and system for enabling a terminal device that supports simultaneous transmission and reception of carriers of different frequency bands to realize simultaneous transmission and reception of carriers of different frequency bands. The method includes: a terminal device receives first information from a network device, and the first information is used to indicate a plurality of activated service cells configured by the network device for the terminal device. The plurality of activated service cells are located in at least two different frequency bands. The method also includes: the terminal device determines a reference cell on each frequency band of at least two frequency bands corresponding to the plurality of activated service cells among the plurality of activated service cells. The method also includes: the terminal device determines the transmission direction of the terminal device in each activated service cell of the plurality of activated service cells. On each frequency band, the transmission direction of the terminal device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band. The present application is applicable to the field of communication technology.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a carrier aggregation method, device and system. Background Art

[0002] In a wireless communication system, the uplink / downlink peak rate of a terminal device is closely related to the communication bandwidth available to the terminal device. The larger the communication bandwidth available to the terminal device, the higher the uplink / downlink peak rate of the terminal device. However, in a single cell with a fixed communication bandwidth, the peak rate that the terminal device can achieve is still a certain distance away from the requirements of the enhanced mobile broadband (eMBB) scenario in the fifth generation mobile communication technology (5G). In order to improve the peak rate of the terminal device and meet the requirements of the eMBB scenario, one design idea is to aggregate the communication bandwidth of multiple cells and provide it to the terminal device for use, which is also called carrier aggregation (CA) technology. In the carrier aggregation scenario, the concept of carrier and cell can be considered to be equivalent. For example, it is equivalent for a terminal device to access a carrier and access a cell. The bandwidth of a carrier is the communication bandwidth of a cell. After aggregating the carriers of multiple cells (also called component carriers (CC)), the bandwidth that the terminal device can enjoy is the sum of the bandwidths of multiple carriers, and its peak rate can also be improved almost proportionally.

[0003] At present, according to the frequency band to which the aggregated CCs belong and whether the CCs are continuous in the frequency domain, CA technology can be divided into: intra-band continuous carrier aggregation, intra-band non-continuous carrier aggregation and inter-band carrier aggregation. Figure 1a As shown, in the inter-band carrier aggregation scenario, CC1 and CC2 belong to different frequency bands: Band A and Band B. In the current standard, in the inter-band carrier aggregation scenario, the terminal device needs to determine the transmission direction of each aggregated CC on a symbol. Among them, one CC represents a service cell, and the terminal device needs to select a reference cell from all activated service cells located in different frequency bands, and the remaining cells are called other cells. Furthermore, the terminal device determines the transmission direction of the terminal device in the reference cell and other cells on each symbol according to the criteria specified in the standard. Finally, on one symbol, the transmission direction of the terminal device in the reference cell and other cells located in different frequency bands is the same.

[0004] However, the above existing solutions will lead to a problem: when the terminal device's capabilities support the simultaneous transmission and reception of CCs located in different frequency bands, or supports different transmission directions of CCs located in different frequency bands, the existing solutions will make the transmission directions of CCs in different frequency bands the same. In other words, the terminal device will not be able to achieve simultaneous transmission and reception of CCs in different frequency bands in the scenario of carrier aggregation between frequency bands.

[0005] Therefore, how to enable terminal devices that support simultaneous transmission and reception of CCs in different frequency bands to achieve simultaneous transmission and reception of CCs in different frequency bands in the scenario of carrier aggregation between frequency bands is a problem that needs to be solved urgently. Summary of the invention

[0006] The embodiments of the present application provide a carrier aggregation method, device and system for solving the problem of how to enable a terminal device that supports simultaneous transmission and reception of CCs in different frequency bands to realize simultaneous transmission and reception of CCs in different frequency bands.

[0007] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0008] In the first aspect, a carrier aggregation method is provided, and the communication device executing the method can be a terminal device or a module applied to the terminal device, such as a chip. The following description is taken as an example of the execution subject being a terminal device. The terminal device receives first information from a network device, and the first information is used to indicate multiple activated service cells configured by the network device for the terminal device, wherein the multiple activated service cells are located in at least two different frequency bands. The terminal device determines a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated service cells in the multiple activated service cells. The terminal device determines the transmission direction of each activated service cell of the terminal device in the multiple activated service cells; wherein, on each frequency band, the transmission direction of the terminal device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band. Based on the carrier aggregation method provided in the embodiment of the present application, the reference cell of each frequency band can be determined on each frequency band, and the transmission direction of CCs on different frequency bands in inter-band CA can be independently determined, so that the terminal device that supports simultaneous transmission and reception of CCs in different frequency bands can realize simultaneous transmission and reception of CCs in different frequency bands in the scenario of inter-band CA.

[0009] In combination with the first aspect above, in a possible design, the method further includes: the terminal device sends second information to the network device, and the second information is used to indicate that the terminal device supports simultaneous transmission and reception of carriers on different frequency bands. Based on this solution, the network device can determine that the terminal device supports simultaneous transmission and reception of CCs in different frequency bands according to the second information, so that the network device can determine the transmission direction on the reference cell and CC synchronously with the terminal device according to the carrier aggregation method provided in this application.

[0010] In combination with the first aspect above, in a possible design, the method further includes: the terminal device receives third information from the network device, the third information is used to indicate multiple service cells configured by the network device for the terminal device, wherein the multiple service cells include multiple activated service cells. Based on this solution, the terminal device can be informed of the service cells configured by the network device for the terminal device.

[0011] In combination with the first aspect above, in a possible design, the third information includes service cell indexes of multiple service cells. Based on this solution, the terminal device can determine the configured service cell according to the service cell index.

[0012] In combination with the first aspect above, in a possible design, the first information includes the cell status of one or more service cells among the multiple service cells, wherein the multiple activated service cells are service cells with corresponding cell status among the multiple service cells. Based on this solution, the terminal device can determine the service cell with the cell status as the activated service cell configured by the network device according to the cell status included in the first information.

[0013] In combination with the first aspect above, in one possible design, the first information includes indication information of service cell indexes of multiple activated service cells. Based on this solution, the terminal device can determine the service cell index according to the indication information of the service cell index included in the first information, and determine the service cell corresponding to the service cell index as the activated service cell.

[0014] In combination with the first aspect above, in a possible design, the method further includes: the terminal device receives fourth information from the network device, and the fourth information includes a deactivation timer of one or more activated service cells among multiple activated service cells. According to the fourth information, the terminal device deactivates the activated service cell that has not monitored data during the operation of the deactivation timer from one or more activated service cells among the multiple activated service cells. Based on this solution, the terminal device can deactivate the qualified activated service cell by itself according to the deactivation timer in the fourth information.

[0015] In combination with the first aspect above, in a possible design, the method further includes: the terminal device receives fifth information from the network device, the fifth information is used to indicate a deactivated service cell configured by the network device for the terminal device; the terminal device deactivates the deactivated service cell indicated by the fifth information from multiple activated service cells. Based on this solution, the terminal device can deactivate the deactivated service cell indicated by the fifth information from multiple activated service cells according to the fifth information.

[0016] In combination with the first aspect above, in one possible design, the fifth information includes indication information of a service cell index of a deactivated service cell. Based on this solution, the terminal device can determine the service cell corresponding to the service cell index as a deactivated service cell and deactivate it according to the fifth information.

[0017] In combination with the first aspect above, in a possible design, the terminal device determines, among multiple activated service cells, a reference cell on each frequency band of at least two frequency bands corresponding to multiple activated service cells, including: the terminal device determines the activated service cell with the smallest service cell index on each frequency band of at least two frequency bands corresponding to multiple activated service cells as the reference cell on each frequency band. Based on this solution, a method for determining a reference cell on each frequency band is provided.

[0018] In the second aspect, a carrier aggregation method is provided, and the communication device executing the method can be a network device or a module applied to the network device, such as a chip. The following description is taken as an example of the execution subject being a network device. The network device sends a first message to the terminal device, and the first message is used to indicate a plurality of activated service cells configured by the network device for the terminal device, wherein the plurality of activated service cells are located in at least two different frequency bands. The network device determines a reference cell on each frequency band of at least two frequency bands corresponding to the plurality of activated service cells in the plurality of activated service cells. The network device determines the transmission direction of each activated service cell of the network device in the plurality of activated service cells; wherein, on each frequency band, the transmission direction of the network device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band. Based on the carrier aggregation method provided in the embodiment of the present application, the reference cell of each frequency band can be determined on each frequency band, and the transmission direction of CCs on different frequency bands in inter-band CA can be independently determined, and the simultaneous transmission and reception of CCs in different frequency bands can be realized in the scenario of inter-band CA.

[0019] In combination with the above second aspect, in a possible design, the method further includes: the network device receives second information from the terminal device, and the second information is used to indicate that the terminal device supports simultaneous transmission and reception of carriers on different frequency bands. Based on this solution, the network device can determine that the terminal device supports simultaneous transmission and reception of CCs in different frequency bands according to the second information, so that the network device can determine the transmission direction on the reference cell and CC synchronously with the terminal device according to the carrier aggregation method provided in this application.

[0020] In combination with the above second aspect, in a possible design, the method further includes: the network device sends third information to the terminal device, the third information is used to indicate multiple service cells configured by the network device for the terminal device, wherein the multiple service cells include multiple activated service cells. Based on this solution, the terminal device can be informed of the service cells configured by the network device for the terminal device.

[0021] In combination with the above second aspect, in a possible design, the third information includes a service cell index of the multiple service cells. Based on this solution, the terminal device can determine the configured service cell according to the service cell index.

[0022] In combination with the above second aspect, in a possible design, the first information includes the cell status of one or more service cells among the multiple service cells, wherein the multiple activated service cells are service cells with corresponding cell status among the multiple service cells. Based on this solution, the network device can indicate the configured activated service cell to the terminal device through the cell status included in the first information.

[0023] In combination with the above second aspect, in a possible design, the first information includes indication information of service cell indexes of multiple activated service cells. Based on this solution, the network device can indicate the configured activated service cell to the terminal device through the service cell index included in the first information.

[0024] In combination with the above second aspect, in a possible design, the method further includes: the network device sends fourth information to the terminal device, and the fourth information includes a deactivation timer of one or more activated service cells among the multiple activated service cells. Based on this solution, the terminal device can deactivate the qualified activated service cell according to the deactivation timer in the fourth information.

[0025] In combination with the above second aspect, in a possible design, the method further includes: the network device sends fifth information to the terminal device, and the fifth information is used to indicate a deactivated service cell configured by the network device for the terminal device. Based on this solution, the terminal device can deactivate the deactivated service cell indicated by the fifth information from multiple activated service cells based on the received fifth information.

[0026] In combination with the above-mentioned second aspect, in one possible design, the fifth information includes indication information of the service cell index of the deactivated service cell. Based on this solution, the terminal device can determine the service cell index of the deactivated service cell according to the fifth information, and deactivate the activated service cell corresponding to the service cell index.

[0027] In combination with the above second aspect, in a possible design, the network device determines, among multiple activated service cells, a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated service cells, including: the network device determines the activated service cell with the smallest service cell index on each frequency band of at least two frequency bands corresponding to the multiple activated service cells as the reference cell on each frequency band. Based on this solution, a method for determining a reference cell on each frequency band is provided.

[0028] In a third aspect, a communication device is provided for implementing the above method. The communication device includes a module, unit, or means corresponding to the above method, and the module, unit, or means can be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

[0029] In combination with the third aspect above, in a possible design, the communication device includes: a transceiver module and a processing module; the transceiver module is used to receive first information from a network device, the first information is used to indicate a plurality of activated service cells configured by the network device for the terminal device, wherein the plurality of activated service cells are located in at least two different frequency bands. The processing module is used to determine, among the plurality of activated service cells, a reference cell on each frequency band of at least two frequency bands corresponding to the plurality of activated service cells. The processing module is also used to determine the transmission direction of the terminal device in each of the plurality of activated service cells; wherein, on each frequency band, the transmission direction of the terminal device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band.

[0030] In combination with the above-mentioned third aspect, in a possible design, the transceiver module is also used to send second information to the network device, and the second information is used to indicate that the terminal device supports simultaneous transmission and reception of carriers on different frequency bands.

[0031] In combination with the above-mentioned third aspect, in a possible design, the transceiver module is also used to receive third information from the network device, and the third information is used to indicate multiple service cells configured by the network device for the terminal device, wherein the multiple service cells include multiple activated service cells.

[0032] In combination with the above third aspect, in one possible design, the third information includes service cell indexes of multiple service cells.

[0033] In combination with the above-mentioned third aspect, in a possible design, the first information includes the cell status of one or more service cells among the multiple service cells, wherein the multiple activated service cells are service cells having corresponding cell status among the multiple service cells.

[0034] In combination with the third aspect above, in a possible design, the first information includes indication information of service cell indexes of multiple activated service cells.

[0035] In combination with the above-mentioned third aspect, in a possible design, the transceiver module is also used to receive fourth information from the network device, and the fourth information includes a deactivation timer of one or more activated service cells among multiple activated service cells; the processing module is also used to deactivate, according to the fourth information, an activated service cell that has not monitored data from one or more activated service cells among the multiple activated service cells.

[0036] In combination with the above-mentioned third aspect, in a possible design, the transceiver module is also used to receive fifth information from the network device, and the fifth information is used to indicate a deactivated service cell configured by the network device for the terminal device; the processing module is also used to deactivate the deactivated service cell indicated by the fifth information from multiple activated service cells.

[0037] In combination with the third aspect above, in one possible design, the fifth information includes indication information of a service cell index of a deactivated service cell.

[0038] In combination with the third aspect above, in a possible design, the processing module is used to determine, among multiple activated service cells, a reference cell on each frequency band of at least two frequency bands corresponding to multiple activated service cells, including: determining the activated service cell with the smallest service cell index on each frequency band of at least two frequency bands corresponding to multiple activated service cells as the reference cell on each frequency band.

[0039] Among them, the technical effects brought about by any possible design in the third aspect can refer to the technical effects brought about by different designs in the above-mentioned first aspect, and will not be repeated here.

[0040] In a fourth aspect, a communication device is provided for implementing the above method. The communication device includes a module, unit, or means corresponding to the above method, and the module, unit, or means can be implemented by hardware, software, or by hardware executing corresponding software. The hardware or software includes one or more modules or units corresponding to the above functions.

[0041] In combination with the fourth aspect above, in a possible design, the communication device includes: a transceiver module and a processing module; the transceiver module is used to send first information to the terminal device, and the first information is used to indicate multiple activated service cells configured by the network device for the terminal device, wherein the multiple activated service cells are located in at least two different frequency bands. The processing module is used to determine, among the multiple activated service cells, a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated service cells. The processing module is also used to determine the transmission direction of the network device in each activated service cell of the multiple activated service cells; wherein, on each frequency band, the transmission direction of the network device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band.

[0042] In combination with the above-mentioned fourth aspect, in a possible design, the transceiver module is also used to receive second information from the terminal device, and the second information is used to indicate that the terminal device supports simultaneous transmission and reception of carriers on different frequency bands.

[0043] In combination with the above-mentioned fourth aspect, in a possible design, the transceiver module is also used to send third information to the terminal device, and the third information is used to indicate multiple service cells configured by the network device for the terminal device, wherein the multiple service cells include multiple activated service cells.

[0044] In combination with the above-mentioned fourth aspect, in one possible design, the third information includes service cell indexes of multiple service cells.

[0045] In combination with the above-mentioned fourth aspect, in a possible design, the first information includes the cell status of one or more service cells among the multiple service cells, wherein the multiple activated service cells are service cells having corresponding cell status among the multiple service cells.

[0046] In combination with the fourth aspect above, in a possible design, the first information includes indication information of service cell indexes of multiple activated service cells.

[0047] In combination with the above-mentioned fourth aspect, in a possible design, the transceiver module is also used to send fourth information to the terminal device, and the fourth information includes a deactivation timer of one or more activated service cells among multiple activated service cells.

[0048] In combination with the above-mentioned fourth aspect, in a possible design, the transceiver module is also used to send fifth information to the terminal device; the fifth information is used to indicate the network device to configure a deactivated service cell for the terminal device.

[0049] In combination with the above-mentioned fourth aspect, in one possible design, the fifth information includes indication information of the service cell index of the deactivated service cell.

[0050] In combination with the fourth aspect above, in a possible design, the processing module is used to determine, among multiple activated service cells, a reference cell on each frequency band of at least two frequency bands corresponding to multiple activated service cells, including: determining the activated service cell with the smallest service cell index on each frequency band of at least two frequency bands corresponding to multiple activated service cells as the reference cell on each frequency band.

[0051] Among them, the technical effects brought about by any possible design in the fourth aspect can refer to the technical effects brought about by different designs in the above-mentioned second aspect, and will not be repeated here.

[0052] In a fifth aspect, a communication device is provided, comprising: a processor and a memory; the memory is used to store computer execution instructions, and when the communication device is running, the processor executes the computer execution instructions stored in the memory so that the communication device performs the carrier aggregation method as described in any one of the above-mentioned first aspects.

[0053] In the sixth aspect, a communication device is provided, comprising: a processor and a memory; the memory is used to store computer execution instructions, and when the communication device is running, the processor executes the computer execution instructions stored in the memory so that the communication device performs the carrier aggregation method as described in any one of the second aspects above.

[0054] In a seventh aspect, a communication device is provided, comprising: a processor; the processor is used to couple with a memory, and after reading instructions in the memory, execute the carrier aggregation method as described in any one of the above-mentioned first aspects according to the instructions.

[0055] In an eighth aspect, a communication device is provided, comprising: a processor; the processor is used to couple with a memory, and after reading instructions in the memory, execute the carrier aggregation method as described in any one of the second aspects above according to the instructions.

[0056] In a ninth aspect, a computer-readable storage medium is provided, wherein instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is executed on a computer, the computer can execute the carrier aggregation method described in any one of the above-mentioned first aspects.

[0057] In a tenth aspect, a computer-readable storage medium is provided, wherein instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is executed on a computer, the computer can execute the carrier aggregation method described in any one of the second aspects.

[0058] In an eleventh aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the carrier aggregation method described in any one of the first aspects.

[0059] In a twelfth aspect, a computer program product comprising instructions is provided, which, when executed on a computer, enables the computer to execute the carrier aggregation method described in any one of the above-mentioned second aspects.

[0060] In a thirteenth aspect, a device (for example, the device may be a chip system) is provided, the device including a processor for supporting a communication device to implement the functions involved in the first aspect above, and in a possible design, the device also includes a memory for storing program instructions and data necessary for the communication device. When the device is a chip system, it may be composed of a chip, or may include a chip and other discrete devices.

[0061] In a fourteenth aspect, a device (for example, the device may be a chip system) is provided, the device including a processor for supporting a communication device to implement the functions involved in the second aspect above, and in a possible design, the device also includes a memory for storing program instructions and data necessary for the communication device. When the device is a chip system, it may be composed of a chip, or may include a chip and other discrete devices.

[0062] In a fifteenth aspect, a communication system is provided, which includes a terminal device and a network device; the network device is used to send a first information to the terminal device, the first information is used to indicate a plurality of activated service cells configured by the network device for the terminal device, wherein the plurality of activated service cells are located in at least two different frequency bands. The terminal device is used to receive the first information from the network device. The terminal device is also used to determine a reference cell on each frequency band of at least two frequency bands corresponding to the plurality of activated service cells. The terminal device is also used to determine the transmission direction of the terminal device in each of the plurality of activated service cells; wherein, on each frequency band, the transmission direction of the terminal device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band. Specifically, the specific implementation of the terminal device may refer to the first aspect or any possible implementation of the first aspect, which will not be repeated here. The specific implementation of the network device may refer to the second aspect or any possible implementation of the second aspect, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1a A schematic diagram of inter-band CA provided in an embodiment of the present application;

[0064] Figure 1b A schematic diagram of continuous CA within a frequency band provided in an embodiment of the present application;

[0065] Figure 1c A schematic diagram of non-continuous CA within a frequency band provided in an embodiment of the present application;

[0066] Figure 2 A schematic diagram of determining a transmission direction on a CC in an existing solution;

[0067] Figure 3 A schematic diagram of an application scenario of a communication system provided in an embodiment of the present application;

[0068] Figure 4 Schematic diagram of the structure of the terminal device and network device provided in the embodiment of the present application

[0069] Figure 5 Another schematic diagram of the structure of a terminal device provided in an embodiment of the present application;

[0070] Figure 6 A schematic diagram of a flow chart of a carrier aggregation method provided in an embodiment of the present application;

[0071] Figure 7 A schematic diagram of determining a transmission direction on a CC provided in an embodiment of the present application;

[0072] Figure 8 Another flowchart of the carrier aggregation method provided in the embodiment of the present application;

[0073] Fig. 9 A schematic diagram of the structure of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0074] Before describing the embodiments of the present application in detail, in order to facilitate understanding of the technical solutions of the embodiments of the present application, a brief introduction to the relevant technical terms of the present application is first given as follows:

[0075] 1. Carrier aggregation

[0076] Carrier aggregation is the aggregation of two or more carrier units (also called component carriers) to support a larger transmission bandwidth. Each carrier unit corresponds to an independent cell, and one carrier unit can usually be equated with one cell. In the CA scenario, the terminal device can communicate data (such as receiving or sending data) with the network device to which the cell belongs through multiple aggregated cells (or CCs), thereby improving the throughput of the terminal device.

[0077] At present, according to the frequency band to which the aggregated CCs belong and whether the CCs are continuous in the frequency domain, CA technology can be divided into: intra-band continuous carrier aggregation, intra-band non-continuous carrier aggregation and inter-band carrier aggregation. Figure 1a As shown in Figure 1, in inter-band CA, CC1 and CC2 belong to different frequency bands: Band A and Band B. Figure 1b As shown in Figure 1, in the intra-band continuous CA, CC1 and CC2 belong to the same frequency band: frequency band A, and are continuous in the frequency domain. Figure 1cAs shown, in intra-band non-continuous CA, CC1 and CC2 belong to the same frequency band: frequency band A, but are not continuous in the frequency domain. It should be noted that in inter-band CA, if there are two or more CCs on a frequency band, it does not limit whether the multiple CCs on a frequency band are continuous or non-continuous in the frequency domain.

[0078] In the current standard, in a CA scenario, the transmission directions of different CCs on a symbol may be different, and the terminal device needs to determine the transmission direction of each aggregated CC on a symbol, where determining the transmission direction of the CC on a symbol means determining whether the CC is uplink (UL) or downlink (DL) on the symbol.

[0079] As described above, a CC represents a service cell. In the prior art, when multiple service cells of CA are located in the same / different frequency bands, the terminal device selects a reference cell from all activated service cells, and the remaining cells are called other cells. The terminal device determines the transmission direction on each symbol in the reference cell and other cells according to the criteria specified in the standard. According to the existing standard, in the end, on one symbol, the terminal device has the same transmission direction on the reference cell and other cells (including activated service cells located in different frequency bands or the same frequency band).

[0080] It should be noted that, because the transmission direction of each symbol on the reference cell and other cells is determined according to the criteria specified in the standard, the transmission direction of some activated serving cells may not exist in the end. Therefore, the transmission direction of the reference cell and other cells is the same, including the following situations:

[0081] 1. The transmission direction on all CCs is uplink.

[0082] 2. The transmission direction on all CCs is downlink.

[0083] 3. The transmission direction on some CCs is uplink, while there is no transmission direction on the remaining CCs.

[0084] 4. The transmission direction on some CCs is downlink, and there is no transmission direction on the remaining CCs.

[0085] The following takes the interaction between the terminal device and the network device as an example to explain the relationship between the transmission direction and simultaneous transmission and reception on the CC. For the terminal device, the terminal device sends an uplink signal to the network device on the CC and receives a downlink signal from the network device. For the network device, the network device receives an uplink signal from the terminal device on the CC and sends a downlink signal to the terminal device. Therefore, on a symbol, if the transmission direction of the CC is uplink, it can be called sending on the CC for the terminal device and receiving on the CC for the network device. If the transmission direction of the CC is downlink, it can be called receiving on the CC for the terminal device and sending on the CC for the network device. When there is no transmission direction on the CC, it can be called neither sending nor receiving for the terminal device and the network device. Therefore, on a symbol, if the transmission directions of the terminal device on different CCs are different, it can be said that the terminal device has achieved simultaneous transmission and reception on different CCs. If the transmission directions of the terminal device on different CCs are the same, the terminal device cannot achieve simultaneous transmission and reception on different CCs.

[0086] The existing solution is described with a specific example. Figure 2 As shown, CC1, CC2, CC3, and CC4 represent the activated service cells of the terminal equipment, among which CC1 is selected as the reference cell. On a symbol m, the reference cell CC1, and other cells: CC2 and CC4 all perform downlink transmission, and the transmission direction is the same. No transmission is performed on other cells CC3, that is, neither sending nor receiving. On symbol n, the reference cell CC1, and other cells: CC2 and CC3 all perform uplink transmission, and the transmission direction is the same. No transmission is performed on other cells CC4, that is, neither sending nor receiving. Therefore, according to the existing scheme, in the end, all CCs (including CCs located in different frequency bands or the same frequency band) have the same transmission direction, and the terminal equipment cannot achieve simultaneous transmission and reception.

[0087] In summary, in the existing solutions, in the scenario of inter-band carrier aggregation, the terminal device cannot realize the simultaneous transmission and reception of CCs in different frequency bands. However, some terminal devices have their own capabilities (such as CA capabilities) that can support the simultaneous transmission and reception of CCs in different frequency bands. Therefore, how to enable terminal devices that support the simultaneous transmission and reception of CCs in different frequency bands to realize the simultaneous transmission and reception of CCs in different frequency bands in the scenario of inter-band carrier aggregation is a problem that needs to be solved urgently.

[0088] The technical solution in the embodiment of the present application will be described below in conjunction with the drawings in the embodiment of the present application. Among them, in the description of the present application, unless otherwise specified, " / " indicates that the objects associated before and after are in an "or" relationship, for example, A / B can represent A or B; "and / or" in the present application is only a kind of association relationship describing the associated objects, indicating that there can be three relationships, for example, A and / or B, which can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. And, in the description of the present application, unless otherwise specified, "multiple" refers to two or more than two. "At least one of the following" or its similar expression refers to any combination of these items, including any combination of single items or plural items. For example, "at least one of a, b and c" or "at least one of a, b or c" can represent: a, b, c, ab, ac, bc, or abc, where a, b, c can be single or multiple. In addition, in order to facilitate the clear description of the technical solutions of the embodiments of the present application, in the embodiments of the present application, the words "first", "second" and the like are used to distinguish the same items or similar items with substantially the same functions and effects. Those skilled in the art will understand that the words "first", "second" and the like do not limit the quantity and execution order, and the words "first", "second" and the like do not necessarily limit the differences. At the same time, in the embodiments of the present application, the words "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design solutions. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete manner for ease of understanding.

[0089] In addition, the network architecture and business scenarios described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application, and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Ordinary technicians in this field can know that with the evolution of network architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0090] Figure 3 Schematic diagram of an application scenario of a communication system 30 applying the carrier aggregation method provided in an embodiment of the present application. Figure 3 As shown, the communication system 30 includes a network device 50 and one or more terminal devices 40 ( Figure 3Only one terminal device 40 is shown in the figure. The terminal device 40 is connected to the network device 50 in a wireless manner. Optionally, different terminal devices 40 can communicate with each other. The terminal device 40 can be fixed or movable.

[0091] It should be noted that Figure 3 It is only a schematic diagram. Although not shown, the communication system 30 may also include other network devices, such as the communication system 30 may also include one or more of a core network device, a wireless relay device, and a wireless backhaul device, which are not specifically limited here. Among them, the network device can be connected to the core network device by wireless or wired means. The core network device and the network device 50 may be independent and different physical devices, or the functions of the core network device and the logical functions of the network device 50 may be integrated on the same physical device, or the functions of part of the core network device and part of the network device 50 may be integrated on one physical device, which is not specifically limited in the embodiment of the present application.

[0092] like Figure 3 As shown, cell 0 and cell 1 are located in frequency band A, cell 2 and cell 3 are located in frequency band B, and terminal device 40 can access cell 0, cell 1, cell 2 and cell 3, and can enjoy the bandwidth after carrier aggregation corresponding to cell 0, cell 1, cell 2 and cell 3 respectively. Network device 50 can send downlink signals to terminal device 40 or receive uplink signals from terminal device 40 through cell 0, cell 1, cell 2 or cell 3, and correspondingly, terminal device can receive downlink signals from network device 50 or send uplink signals to network device 50 through cell 0, cell 1, cell 2 or cell 3. In the carrier aggregation method provided in the embodiment of the present application, network device 50 is used to send first information to terminal device 40, and the first information is used to indicate that network device 50 configures multiple activated service cells for terminal device 40, wherein the multiple activated service cells are located in at least two different frequency bands. Terminal device 40 is used to receive the first information from network device 50, and determine the reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated service cells among the multiple activated service cells. The terminal device 40 is further used to determine the transmission direction of the terminal device 40 in each activated service cell of the plurality of activated service cells; wherein, on each frequency band, the transmission direction of the terminal device 40 in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band. The specific implementation and technical effects of the scheme will be described in detail in the subsequent method embodiments, and will not be repeated here.

[0093] Optionally, the terminal device 40 in the embodiment of the present application may be a device for realizing a wireless communication function, such as a terminal or a chip that can be used in a terminal. The terminal may also be referred to as user equipment (UE), a mobile station, a mobile terminal, etc. The terminal may be a mobile phone, a tablet computer, a computer with a wireless transceiver function, a virtual reality terminal device, an augmented reality terminal device, a wireless terminal in industrial control, a wireless terminal in unmanned driving, a wireless terminal in remote surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device.

[0094] Optionally, the network device 50 in the embodiment of the present application is a device that connects the terminal device 40 to the wireless network, which can be a base station, an evolved base station (evolved NodeB, eNodeB), a transmission reception point (TRP), a next generation base station (next generation NodeB, gNB) in a 5G mobile communication system, a base station in a future mobile communication system, or an access node in a wireless fidelity (wireless-fidelity, Wi-Fi) system, etc.; it can also be a module or unit that completes part of the functions of a base station, for example, it can be a centralized unit (central unit, CU) or a distributed unit (distributed unit, DU). The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device. In this application, unless otherwise specified, network devices refer to wireless access network devices.

[0095] Optionally, the terminal device 40 and the network device 50 in the embodiment of the present application can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on airplanes, balloons and artificial satellites in the air. The embodiment of the present application does not limit the application scenarios of the terminal device 40 and the network device 50.

[0096] Optionally, the terminal device 40 and the network device 50 in the embodiment of the present application can communicate through the authorized spectrum, can also communicate through the unlicensed spectrum, or can communicate through the authorized spectrum and the unlicensed spectrum at the same time. The terminal device 40 and the network device 50 can communicate through the spectrum below 6 gigahertz (GHz), can communicate through the spectrum above 6 GHz, and can also use the spectrum below 6 GHz and the spectrum above 6 GHz at the same time. The embodiment of the present application does not limit the spectrum resources used between the terminal device 40 and the network device 50.

[0097] Optionally, the terminal device 40 and the network device 50 in the embodiment of the present application may also be referred to as a communication device, which may be a general device or a dedicated device, and the embodiment of the present application does not specifically limit this.

[0098] Optional, such as Figure 4 As shown, it is a schematic diagram of the structure of the terminal device 40 and the network device 50 provided in the embodiment of the present application.

[0099] The terminal device 40 includes at least one processor 401 and at least one transceiver 403. Optionally, the terminal device 40 may further include at least one memory 402, at least one output device 404 or at least one input device 405.

[0100] Processor 401, memory 402 and transceiver 403 are connected via a communication line. The communication line may include a path to transmit information between the above components.

[0101] Processor 401 may be a general-purpose central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. A general-purpose processor may be a microprocessor or any conventional processor. In a specific implementation, as an embodiment, processor 401 may also include multiple CPUs, and processor 401 may be a single-core processor or a multi-core processor. The processor here may refer to one or more devices, circuits or processing cores for processing data.

[0102] The memory 402 may be a device with a storage function. For example, it may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a magnetic disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer, but is not limited thereto. The memory 402 may exist independently and be connected to the processor 401 through a communication line. The memory 402 may also be integrated with the processor 401.

[0103] The memory 402 is used to store computer-executable instructions for executing the solution of the present application, and the execution is controlled by the processor 401. Specifically, the processor 401 is used to execute the computer-executable instructions stored in the memory 402, thereby implementing the carrier aggregation method described in the embodiment of the present application.

[0104] Alternatively, optionally, in an embodiment of the present application, the processor 401 may also perform processing-related functions in the carrier aggregation method provided in the following embodiments of the present application, and the transceiver 403 is responsible for communicating with other devices or communication networks, which is not specifically limited in the embodiments of the present application.

[0105] Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application code or computer program code, which is not specifically limited in the embodiments of the present application.

[0106] The transceiver 403 may be any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), or wireless local area networks (WLAN). The transceiver 403 includes a transmitter (Tx) and a receiver (Rx).

[0107] The output device 404 communicates with the processor 401 and can display information in a variety of ways. For example, the output device 404 can be a liquid crystal display (LCD), a light emitting diode (LED) display device, a cathode ray tube (CRT) display device, or a projector.

[0108] The input device 405 communicates with the processor 401 and can accept user input in various ways. For example, the input device 405 can be a mouse, a keyboard, a touch screen device, or a sensor device.

[0109] The network device 50 includes at least one processor 501, at least one transceiver 503 and at least one network interface 504. Optionally, the network device 50 may also include at least one memory 502. The processor 501, the memory 502, the transceiver 503 and the network interface 504 are connected via a communication line. The network interface 504 is used to connect to a core network device via a link (e.g., an S1 interface), or to connect to a network interface of other network devices via a wired or wireless link (e.g., an X2 interface). Figure 4 In addition, the description of the processor 501, the memory 502 and the transceiver 503 can refer to the description of the processor 401, the memory 402 and the transceiver 403 in the terminal device 40, which will not be repeated here.

[0110] Combination Figure 4 The schematic diagram of the structure of the terminal device 40 shown is exemplary. Figure 5 A specific structural form of the terminal device 40 provided in an embodiment of the present application.

[0111] Wherein, in some embodiments, Figure 4 The functions of the processor 401 can be Figure 5 The processor 110 in is implemented.

[0112] In some embodiments, Figure 4 The function of the transceiver 403 can be achieved by Figure 5The antenna 1, antenna 2, mobile communication module 150, wireless communication module 160, etc. in the terminal device 40 are implemented. The mobile communication module 150 can provide solutions for wireless communication technologies including LTE, NR or future mobile communications applied on the terminal device 40. The wireless communication module 160 can provide solutions for wireless communication technologies including WLAN (such as Wi-Fi network), bluetooth (blue tooth, BT), global navigation satellite system (global navigation satellite system, GNSS), frequency modulation (frequency modulation, FM), near field communication (near field communication, NFC), infrared, etc. applied on the terminal device 40. In some embodiments, the antenna 1 of the terminal device 40 is coupled to the mobile communication module 150, and the antenna 2 is coupled to the wireless communication module 160, so that the terminal device 40 can communicate with the network and other devices through wireless communication technology.

[0113] In some embodiments, Figure 4 The function of the memory 402 can be achieved by Figure 5 It can be implemented by the internal memory 121 in the memory or the external memory connected to the external memory interface 120.

[0114] In some embodiments, Figure 4 The output device 404 in the function can be Figure 5 The display screen 194 is implemented in.

[0115] In some embodiments, Figure 4 The function of the input device 405 can be realized by a mouse, keyboard, touch screen device or Figure 5 This is achieved by the sensor module 180 in.

[0116] In some embodiments, Figure 4 As shown, the terminal device 40 may also include one or more of an audio module 170 , a camera 193 , a button 190 , a SIM card interface 195 , a USB interface 130 , a charging management module 140 , a power management module 141 and a battery 142 .

[0117] Understandably, Figure 5 The structure shown does not constitute a specific limitation on the terminal device 40. For example, in other embodiments of the present application, the terminal device 40 may include more or fewer components than shown in the figure, or combine some components, or split some components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0118] The following will combine Figures 1 to Figure 5 ,by Figure 3 Taking the interaction between the network device 50 shown and any terminal device 40 as an example, the carrier aggregation method provided in the embodiment of the present application is described in detail.

[0119] It should be noted that the message names between the network elements or the names of the parameters in the messages in the following embodiments of the present application are only examples, and other names may also be used in the specific implementation, and the embodiments of the present application do not specifically limit this. In addition, the processing performed by the single execution subject shown in the embodiments of the present application may also be divided into multiple execution subjects, which are logically and / or physically separated. For example, the processing performed by the access network device may be divided into at least one of a central unit (CU), a distributed unit (DU), and a radio unit (RU).

[0120] like Figure 6 As shown, a carrier aggregation method provided in an embodiment of the present application includes the following steps S601-S605:

[0121] S601. The network device sends first information to the terminal device. Correspondingly, the terminal device receives the first information from the network device. The first information is used to indicate multiple activated service cells configured by the network device for the terminal device, wherein the multiple activated service cells are located in at least two different frequency bands.

[0122] S602. The terminal device determines, among multiple activated serving cells, a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated serving cells.

[0123] S603: The network device determines, from among the multiple activated serving cells, a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated serving cells.

[0124] S604. The terminal device determines a transmission direction of the terminal device in each of a plurality of activated service cells; wherein, on each frequency band, the transmission direction of the terminal device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band.

[0125] S605. The network device determines a transmission direction of the network device in each of the multiple activated service cells; wherein, on each frequency band, the transmission direction of the network device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band.

[0126] It should be noted that in the embodiment of the present application, a cell (including a serving cell or an activated serving cell) may be a network device, such as a cell corresponding to a base station. A cell may belong to a macro base station or a base station corresponding to a small cell. A small cell may include: a metro cell, a micro cell, a pico cell, a femto cell, etc., which are uniformly described here and will not be repeated in detail later.

[0127] The following is a detailed description of steps S601-S605.

[0128] For step S601, in the embodiment of the present application, the terminal device can determine the activated service cell configured by the network device for the terminal device based on the first information received from the network device, wherein the multiple activated service cells are located in at least two different frequency bands. In other words, the embodiment of the present application is applied to the scenario of carrier aggregation between frequency bands.

[0129] It should be noted that in the embodiment of the present application, the multiple activated service cells configured by the network device for the terminal device indicated by the first information belong to secondary cells (SCells), and the status of the secondary cells can be changed, for example, activated or deactivated by the terminal device or the network device. The specific implementation is introduced later. Before step S601, when the terminal device initially accesses the network device, it selects a service cell and establishes a radio resource control (RRC) connection. This service cell is called a primary cell (PCell), and the primary cell always remains activated. Both the primary cell and the secondary cell are called service cells.

[0130] It should be noted that the embodiments of the present application do not limit the number of frequency bands in different frequency bands. Moreover, the embodiments of the present application do not limit the number of activated service cells on different frequency bands. Exemplarily, the number of activated service cells on frequency band A may be the same as the number of activated service cells on frequency band B, for example, both are 2 activated service cells; or, the number of activated service cells on frequency band A may also be different from the number of activated service cells on frequency band B, for example, 1 activated service cell on frequency band A and 2 activated service cells on frequency band B. It can be understood that in the embodiments of the present application, the activated service cells on different frequency bands may also be equivalent to CCs on different frequency bands.

[0131] In the embodiment of the present application, the activated service cell is an activated service cell among the service cells configured by the network device for the terminal device. The terminal can perform data communication (e.g., receive data or send data) with the network device to which the activated service cell belongs through the activated service cell. Exemplarily, the network device can configure an activated service cell for the terminal device according to the traffic volume of the terminal device. When the traffic volume of the terminal device is large, the network device activates more service cells for the terminal device. When the traffic volume of the terminal device is small, the network device configures fewer activated service cells for the terminal device.

[0132] It is understandable that the network device needs to first obtain the capability information of the terminal device itself to determine that the terminal device supports CA. Further, the network device needs to determine that the terminal device supports inter-band CA before configuring CCs of different frequency bands for the terminal device. Therefore, optionally, before step S601, the carrier aggregation method provided in the embodiment of the present application also includes: the network device sends a first message to the terminal device, and the first message is used to request the terminal device for capability information of the terminal device. Accordingly, after receiving the first message from the network device, the terminal device sends the capability information of the terminal device to the network device, wherein the capability information of the terminal device includes the CA capability information of the terminal device. Exemplarily, the CA capability information of the terminal device includes information such as the band combination (bandcombination) supported by the terminal device and / or the inter-band CA supported by the terminal device. Based on this scheme, the network device can determine that the terminal device supports CA based on the capability information of the terminal device.

[0133] In the embodiment of the present application, the first message may be an RRC message, and the capability information of the terminal device may also be carried by the RRC message. Exemplarily, the network device may send the first message to the terminal device via UE capability request (UE capability enquiry) signaling, and the terminal device may send the capability information of the terminal device to the network device via UE capability information (UE capability information) signaling.

[0134] It should be noted that, in an embodiment of the present application, the terminal device needs to support the simultaneous transmission and reception of CCs located in different frequency bands, or the terminal device needs to support the simultaneous transmission and reception of CCs during inter-band CA, in order to achieve the simultaneous transmission and reception of CCs in different frequency bands. In order to enable the network device to know that the terminal device supports the simultaneous transmission and reception of CCs in different frequency bands, optionally, before step S601, the method also includes: the terminal device sends a second information to the network device, and the second information is used to indicate that the terminal device supports the simultaneous transmission and reception of carriers in different frequency bands. Correspondingly, the network device receives the second information from the terminal device. Based on this scheme, the network device can determine that the terminal device supports the simultaneous transmission and reception of CCs in different frequency bands according to the second information, so that the network device can determine the transmission direction on the reference cell and CC synchronously with the terminal device according to the carrier aggregation method provided in the present application.

[0135] It is understandable that the terminal device supports simultaneous transmission and reception of CCs on different frequency bands, which can also be referred to as the capability of the terminal device. Therefore, in a possible implementation, in an embodiment of the present application, the second information may be included in the capability information of the terminal device sent by the terminal device to the network device above. Of course, the second information can also be sent simultaneously with the capability information of the terminal device sent by the terminal device to the network device above. In other words, it can be carried in the same message; or, the second information may not be sent simultaneously with the capability information of the terminal device, and the embodiment of the present application does not limit this.

[0136] According to the above introduction, in S601, the activated service cell is an activated service cell among the service cells configured by the network device for the terminal device. Optionally, in order to enable the terminal device to know the service cell configured by the network device for the terminal device, before S601, the method provided in the embodiment of the present application also includes: the network device sends a third information to the terminal device. Accordingly, the terminal device receives the third information from the network device, and the third information is used to indicate a plurality of service cells configured by the network device for the terminal device, wherein the plurality of service cells include a plurality of activated service cells. Based on this solution, the terminal device can determine the service cell configured by the network device for the terminal device according to the third information.

[0137] Optionally, the network device may configure the above-mentioned multiple service cells for the terminal device according to the terminal device capability information sent by the terminal device, and send third information to the terminal device.

[0138] Exemplarily, the third information may include serving cell indexes of multiple serving cells and / or information such as frequency points corresponding to the multiple serving cells. For example, when the third information includes serving cell indexes of multiple serving cells, the terminal device can determine the configured serving cell based on the serving cell indexes.

[0139] Exemplarily, the network device may send the third information to the terminal device via RRC reconfiguration signaling.

[0140] In step S601, the first information is used to indicate multiple activated service cells configured by the network device for the terminal device. In one possible manner, the first information includes the cell status (sCellState) of one or more service cells among the above-mentioned multiple service cells, wherein the multiple activated service cells are service cells with corresponding cell status among the above-mentioned multiple service cells. The terminal device can determine the service cell with the cell status as the activated service cell configured by the network device based on the cell status included in the first information. In this manner, the first information can be sent simultaneously with the third information. In other words, it can be carried in the same message. Exemplarily, the terminal device can determine the service cell corresponding to the service cell index with the cell status as the activated service cell based on the service cell index in the message and the cell status corresponding to the service cell index.

[0141] Exemplarily, in the embodiment of the present application, the value of the cell status may be activated. When the network device configures the cell status information for the serving cell, the value is activated.

[0142] In another possible manner, the first information includes indication information of a serving cell index of the activated serving cell. The terminal device may determine the serving cell index according to the indication information of the serving cell index included in the first information, and determine the serving cell corresponding to the serving cell index as the activated serving cell. In this manner, the first information may be sent independently.

[0143] Exemplarily, the first information may include bit information corresponding to the service cell, and the bit information corresponding to the service cell includes the position of the bit and the value of the bit, wherein the position of the bit is the indication information of the service cell index, which is used to indicate the service cell index. The value of the bit represents the assignment of the service cell, and the assignment can indicate the state of the service cell. For example, in the first information, the position of a certain bit is the i-th bit among all the bit positions corresponding to the service cell, i is a positive integer greater than or equal to 1, indicating that the service cell index of the service cell represented by the bit is i, and the value of the bit is 1, indicating that the service cell represented by the bit is assigned a value of 1, wherein the assignment value of 1 indicates that the service cell is activated. The terminal device can determine that the service cell with a service cell index of i is an activated service cell configured by the network device based on the bit information corresponding to the service cell in the first information.

[0144] It can be understood that in an embodiment of the present application, if the indication information of the service cell index included in the first information indicates that the service cell with the service cell index i is an activated service cell, but the service cell configured by the network device for the terminal device does not include the service cell with the service cell index i, the terminal device will not determine the service cell with the service cell index i as an activated service cell.

[0145] In the embodiment of the present application, optionally, when the first information and the third information are sent simultaneously, the network device may send the first information and the third information to the terminal device via RRC reconfiguration signaling. Alternatively, when the first information is sent independently, the network device may send the first information to the terminal device via medium access control (MAC) signaling.

[0146] For step S602, the terminal device may determine, according to a preconfigured rule, a reference cell on each frequency band of at least two frequency bands corresponding to multiple activated serving cells from among the multiple activated serving cells indicated by the first information.

[0147] To explain with a specific example, there are 3 activated service cells on frequency band A, 2 activated service cells on frequency band B, and 1 activated service cell on frequency band C. The terminal device determines the reference cell A on frequency band A from the 3 activated service cells on frequency band A, determines the reference cell B on frequency band B from the 2 activated service cells on frequency band B, and determines the activated service cell on frequency band C as the reference cell.

[0148] Optionally, the terminal device may determine the activated service cell with the smallest service cell index on each frequency band of at least two frequency bands corresponding to multiple activated service cells as a reference cell on each frequency band. For example, the service cell index of activated service cell A on frequency band A is 2, the service cell index of activated service cell B is 3, and the service cell index of activated service cell C is 4. According to the sizes of the service cell indexes corresponding to activated service cells A, B, and C, respectively, the terminal device determines activated service cell A as the reference cell on frequency band A.

[0149] It should be noted that the embodiment of the present application also provides a method for determining a reference cell in a plurality of activated service cells, in which a reference cell can be determined in activated service cells on at least two different frequency bands, or in other words, the same reference cell can be determined on at least two different frequency bands. Exemplarily, there are 4 different frequency bands: A, B, C, and D, wherein the terminal device determines a reference cell 1 of frequency band A and frequency band B in the activated service cells on frequency band A and frequency band B, and the terminal device determines a reference cell 2 of frequency band C and frequency band D in the activated service cells on frequency band C and frequency band D. In other words, frequency band A and frequency band B correspond to the same reference cell 1, and frequency band C and frequency band D correspond to the same reference cell 2.

[0150] Optionally, the network device may send indication information to the terminal device to instruct the terminal device on a method for determining a reference cell, and the terminal device may select a different method for determining a reference cell according to the received indication information.

[0151] For step S603, for the network device, in order to keep synchronization with the terminal device, the network device needs to determine the same reference cell as the terminal device. In order for the network device and the terminal device to determine the same reference cell, in one possible manner, after the terminal device determines the reference cell on each frequency band, the terminal device sends the reference cell information on each frequency band determined by the terminal device to the network device, and the network device determines the reference cell on each frequency band based on the received information.

[0152] In another possible implementation, the network device may configure the same rule for determining the reference cell as the terminal device, so that the network device and the terminal device determine the same reference cell. For details, please refer to the above introduction to step S602, which will not be repeated here.

[0153] For step S604, the terminal device needs to determine the transmission direction of each activated serving cell in a symbol among multiple activated serving cells. For the relationship between the transmission direction and simultaneous transmission and reception, please refer to the above introduction, which will not be repeated here.

[0154] In the embodiment of the present application, the terminal device can determine the transmission direction on the symbol in the reference cell and other cells according to the transmission direction of the reference cell, other cells configured by the high-level layer on a symbol, the behavior of the sending signal or receiving signal configured by the high-level layer, the behavior of the sending or receiving signal indicated by the downlink control information (DCI), etc., according to the pre-configured criteria. Finally, on each frequency band, the transmission direction of the terminal device in the reference cell and other cells is the same.

[0155] It should be noted that in the embodiment of the present application, it is not necessarily that other cells "follow" the transmission direction of the reference cell. In other words, it is not necessarily necessary to first determine the transmission direction of the reference cell and then make the transmission directions of other cells consistent with the transmission direction of the reference cell. Instead, according to the pre-configured rules, the transmission directions of the reference cell and other cells are ultimately consistent on each frequency band. For details, please refer to the existing standards for how to determine the transmission directions of the reference cell and other cells, which will not be repeated here.

[0156] It should be noted that, in the embodiment of the present application, when determining the transmission direction of the activated service cell, the activated service cell may not have a transmission direction. Exemplarily, when the transmission direction of a certain other cell on a frequency band cannot be the same as the transmission direction of the reference cell, the other cell ultimately does not have a transmission direction. In other words, the terminal device neither receives nor sends on the cell.

[0157] For ease of understanding, a specific example is used for illustration. Figure 7 As shown, there are two different frequency bands, frequency band A and frequency band B, where CC1 is the reference cell on frequency band A, CC2 is the other cell on frequency band A, CC3 is the reference cell on frequency band B, and CC4 is the other cell on frequency band B. The terminal device determines the transmission direction of CC1, CC2, CC3, and CC4 on symbols m, n, k, and j according to the rule that "on each frequency band, the terminal device has the same transmission direction in the reference cell and other cells". Finally, on frequency band A, the transmission directions of CC1 and CC2 on symbol m are both DL, the transmission directions of CC1 and CC2 on symbol n are both UL, the transmission directions of CC1 and CC2 on symbol k are both DL, and the transmission directions of CC1 and CC2 on symbol j are both UL. On frequency band B, when CC3 and CC4 both have transmission directions, the transmission directions are consistent, for example, the transmission directions of CC1 and CC2 on symbol m are both UL. On symbol n, the transmission direction of CC3 is DL, and CC4 has no transmission direction, and neither sends nor receives. In symbol k, CC3 does not transmit or receive, and CC4 transmits in the DL direction. In symbol j, CC3 transmits in the UL direction, and CC4 does not transmit or receive. It can be seen that in symbols m and n, the CC on band A and the CC on band B have different transmission directions, and the terminal device can transmit and receive CCs on band A and band B at the same time.

[0158] For step S605, in order to keep synchronization with the terminal device, the network device can determine the transmission direction of the reference cell and other cells on each frequency band in the same rule as the terminal device, so as to determine the transmission direction of the network device in the reference cell and other cells on each frequency band. Finally, on each frequency band, the transmission direction of the network device in the reference cell and other cells is the same. For details, please refer to the introduction of step S604 above, which will not be repeated here.

[0159] Based on the carrier aggregation method provided in the embodiment of the present application, the reference cell of each frequency band can be determined on each frequency band, and the transmission direction of CCs on different frequency bands in inter-band CA can be independently determined, so that terminal devices that support simultaneous transmission and reception of CCs in different frequency bands can realize simultaneous transmission and reception of CCs in different frequency bands in the inter-band CA scenario.

[0160] The actions of the terminal device in the above steps S601 to S605 can be Figure 4 The processor 401 in the terminal device 40 shown in the figure calls the application code stored in the memory 403 to instruct the terminal device to execute; the actions of the network device in the above steps S601 to S605 can be performed by Figure 4 The processor 501 in the network device 50 shown calls the application code stored in the memory 502 to instruct the network device to execute. This embodiment does not impose any limitation on this.

[0161] Optionally, the carrier aggregation method provided in the embodiment of the present application further includes updating the serving cell or activating the serving cell for the terminal device. The network device may update the serving cell for the terminal device according to the CA-related measurement event. The specific implementation may refer to the prior art and will not be described in detail here.

[0162] Exemplarily, the network device may add an activated service cell for the terminal device or deactivate the activated service cell according to the changing traffic volume of the terminal device. For example, when the traffic volume of the terminal device increases, an activated service cell is added for the terminal device, and when the traffic volume of the terminal device decreases, the activated service cell of the terminal device is deactivated. After the service cell is deactivated, the terminal device cannot communicate data (for example, receive data or send data) with the network device to which it belongs. Among them, how to add an activated service cell for the terminal device can refer to the introduction of step S601 above, which will not be repeated here.

[0163] In a possible implementation, the method for deactivating an activated service cell provided in an embodiment of the present application includes: a network device sends fourth information to a terminal device, and the terminal device receives the fourth information from the network device, where the fourth information includes a deactivation timer of one or more activated service cells among multiple activated service cells. According to the fourth information, the terminal device deactivates an activated service cell that has not monitored data during the operation of the deactivation timer from one or more activated service cells among the multiple activated service cells.

[0164] In this mode, the network device can configure a deactivation timer for the service cell. When the service cell is activated (the service cell is configured as an activated service cell), the deactivation timer starts running. If the deactivation timer of an activated service cell does not monitor business or control data during the operation of the deactivation timer, the terminal device can automatically deactivate the activated service cell after the deactivation timer expires. Optionally, the service cell configured with the physical uplink control channel (PUCCH) may not be configured with a deactivation timer.

[0165] In the embodiment of the present application, the fourth information may be sent simultaneously with the first information or the third information. Exemplarily, when the fourth information is sent simultaneously with the third information, the network device may send the fourth information and the third information to the terminal device via RRC reconfiguration signaling.

[0166] In another possible implementation, the method for deactivating an activated service cell provided in an embodiment of the present application includes: a network device sends fifth information to a terminal device, and the terminal device receives the fifth information from the network device, where the fifth information is used to indicate a deactivated service cell configured by the network device for the terminal device. The terminal device deactivates the deactivated service cell indicated by the fifth information from multiple activated service cells.

[0167] In this manner, the terminal device can deactivate the deactivated service cell indicated by the fifth information from multiple activated service cells according to the fifth information. Exemplarily, the fifth information may include indication information of the service cell index of the deactivated service cell, and the terminal device can determine the service cell index of the deactivated service cell according to the fifth information, and deactivate the activated service cell corresponding to the service cell index.

[0168] Exemplarily, the fifth information may include bit information corresponding to the service cell, and the bit information corresponding to the service cell includes the position of the bit and the value of the bit, wherein the position of the bit is the service cell index indication information, which is used to indicate the service cell index. The value of the bit represents the assignment of the service cell, and the assignment can indicate the state of the service cell. For example, in the fifth information, the position of a certain bit is the i-th bit among all the bit positions corresponding to the service cell, i is a positive integer greater than or equal to 1, indicating that the service cell index of the service cell represented by the bit is i, and the value of the bit is 0, indicating that the service cell represented by the bit is assigned to 0, wherein the assignment of 0 indicates that the service cell is a deactivated service cell. The terminal device can deactivate the activated service cell with a service cell index of i according to the bit information corresponding to the service cell in the fifth information.

[0169] It can be understood that in an embodiment of the present application, if the indication information of the service cell index included in the fifth information indicates that the service cell with a service cell index of i is a deactivated service cell, but the service cell configured by the network device for the terminal device does not include the service cell with a service cell index of i, the terminal device will not deactivate the service cell with a service cell index of i.

[0170] In an embodiment of the present application, optionally, when the first information includes indication information of the service cell index of the activated service cell, the first information can be sent simultaneously with the fifth information, in other words, can be carried in the same message. Exemplarily, when the first information and the fifth information are carried in the same message, the message can indicate whether the state of each service cell in all service cells is activated or deactivated. For example, the message includes information of bits corresponding to each service cell in all service cells, and when there are n service cells, there are also n bits corresponding to the service cells. The bit information corresponding to the service cell includes the position of the bit and the value of the bit, wherein the position of the bit is the service cell index indication information, which is used to indicate the service cell index. The value of the bit represents the assignment of the service cell, and the assignment can indicate the state of the service cell, the assignment of 1 indicates that the service cell is an activated service cell, and the assignment of 0 indicates that the cell is a deactivated service cell. The terminal device can determine the activated service cell and the deactivated service cell in all service cells based on the bit information corresponding to the service cell in the message.

[0171] In the embodiment of the present application, exemplarily, the network device may send the fifth information to the terminal device via MAC signaling.

[0172] After the network device updates the service cell or activates the service cell for the terminal device, if the activated service cell changes, the terminal device can re-determine the reference cell on each frequency band based on the changed activated service cell. The specific determination process can refer to the introduction of step S602 above and will not be repeated here.

[0173] In summary, the overall process of the embodiment of the present application can be illustrated as follows: Figure 8 As shown, steps S801-S809 are included.

[0174] S801. A network device sends a first terminal device message to a terminal device. Correspondingly, the terminal device receives the first message from the network device.

[0175] For example, referring to the above description of the first message in step S601, Figure 8 As shown, the first message may be, for example, UE capability request signaling.

[0176] S802: The terminal device sends the capability information of the terminal device to the network device. Correspondingly, the network device receives the capability information of the terminal device from the terminal device.

[0177] For example, referring to the above description of the capability information of the terminal device in step S601, Figure 8 As shown, the capability information of the terminal device can be carried by UE capability information signaling, for example.

[0178] S803: The network device configures a serving cell for the terminal device according to the capability of the terminal device, and indicates it to the terminal device. For details, please refer to the above description of the third information in step S601, which will not be repeated here.

[0179] S804: The network device configures and activates a serving cell for the terminal device according to the traffic volume of the terminal device. For details, please refer to the above description of step S601, which will not be repeated here.

[0180] S805. The terminal device determines a reference cell in each frequency band of at least two frequency bands corresponding to the multiple activated service cells, and determines the transmission direction of the terminal device in each activated service cell of the multiple activated service cells. For details, please refer to the above description of step S602 and step S604, which will not be repeated here.

[0181] S806: The network device determines, among the multiple activated service cells, a reference cell in each frequency band of at least two frequency bands corresponding to the multiple activated service cells, and determines a transmission direction of the network device in each of the multiple activated service cells. For details, please refer to the above description of step S603 and step S605, which will not be repeated here.

[0182] S807: The network device updates the configured serving cell or activates the serving cell for the terminal device according to the changed traffic volume of the terminal device or CA-related measurement events. For details, please refer to the above related introduction, which will not be repeated here.

[0183] S808: When the activated serving cell changes, the terminal device re-determines the reference cell on each frequency band and the transmission direction of the reference cell and other cells on each frequency band according to the new activated serving cell. For details, please refer to the above description of step S602 and step S604, which will not be repeated here.

[0184] S809: When the activated serving cell changes, the network device re-determines the reference cell on each frequency band and determines the transmission direction of the reference cell and other cells on each frequency band according to the new activated serving cell. For details, please refer to the above description of step S603 and step S605, which will not be repeated here.

[0185] The actions of the terminal device in the above steps S801 to S809 can be Figure 4 The processor 401 in the terminal device 40 shown in the figure calls the application code stored in the memory 403 to instruct the terminal device to execute; the actions of the network device in the above steps S801 to S809 can be performed by Figure 4 The processor 501 in the network device 50 shown calls the application code stored in the memory 502 to instruct the network device to execute. This embodiment does not impose any limitation on this.

[0186] It can be understood that in the above embodiments, the methods and / or steps implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be used for the terminal device; the methods and / or steps implemented by the network device can also be implemented by components (such as chips or circuits) that can be used for the network device.

[0187] The above mainly introduces the scheme provided by the embodiment of the present application from the perspective of interaction between various network elements. Accordingly, the embodiment of the present application also provides a communication device, which is used to implement the above various methods. The communication device can be a terminal device in the above method embodiment, or a device including the above terminal device, or a component that can be used for a terminal device; or, the communication device can be a network device in the above method embodiment, or a device including the above network device, or a component that can be used for a network device. It can be understood that in order to implement the above functions, the communication device includes a hardware structure and / or software module corresponding to each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0188] The embodiment of the present application can divide the functional modules of the communication device according to the above method embodiment. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0189] Fig. 9The structure diagram of a communication device 90 is shown. The communication device 90 includes a transceiver module 901 and a processing module 902. The transceiver module 901, which may also be called a transceiver unit, is used to implement the transceiver function, and may be, for example, a transceiver circuit, a transceiver, a transceiver or a communication interface.

[0190] Taking the communication device as the terminal device in the above method embodiment as an example, the transceiver module 901 is used to receive the first information from the network device, and the first information is used to indicate the multiple activated service cells configured by the network device for the terminal device, wherein the multiple activated service cells are located in at least two different frequency bands. The processing module 902 is used to determine, among the multiple activated service cells, a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated service cells. The processing module 902 is also used to determine the transmission direction of the terminal device in each activated service cell of the multiple activated service cells; wherein, on each frequency band, the transmission direction of the terminal device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band.

[0191] Optionally, the transceiver module 901 is further used to send second information to the network device, where the second information is used to indicate that the terminal device supports simultaneous transmission and reception of carriers on different frequency bands.

[0192] Optionally, the transceiver module 901 is further used to receive third information from the network device, where the third information is used to indicate multiple service cells configured by the network device for the terminal device, wherein the multiple service cells include multiple activated service cells.

[0193] Optionally, the third information includes serving cell indexes of multiple serving cells.

[0194] Optionally, the first information includes cell status of one or more service cells among the multiple service cells, wherein the multiple activated service cells are service cells having corresponding cell status among the multiple service cells.

[0195] Optionally, the first information includes indication information of service cell indexes of multiple activated service cells.

[0196] Optionally, the transceiver module 901 is also used to receive fourth information from the network device, the fourth information including a deactivation timer of one or more activated service cells among multiple activated service cells; the processing module 902 is also used to deactivate, based on the fourth information, an activated service cell that has not monitored data from one or more activated service cells among the multiple activated service cells.

[0197] Optionally, the transceiver module 901 is also used to receive fifth information from the network device, and the fifth information is used to indicate a deactivated service cell configured by the network device for the terminal device; the processing module 902 is also used to deactivate the deactivated service cell indicated by the fifth information from multiple activated service cells.

[0198] Optionally, the fifth information includes indication information of a service cell index of a deactivated service cell.

[0199] Optionally, the processing module 902 is used to determine, among multiple activated service cells, a reference cell on each frequency band of at least two frequency bands corresponding to multiple activated service cells, including: determining the activated service cell with the smallest service cell index on each frequency band of at least two frequency bands corresponding to multiple activated service cells as the reference cell on each frequency band.

[0200] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0201] In this embodiment, the communication device 90 is presented in the form of dividing various functional modules in an integrated manner. The "module" here may refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and / or other devices that can provide the above functions.

[0202] In a simple embodiment, those skilled in the art will appreciate that the communication device 90 may be used Figure 4 The form of the terminal device 40 is shown.

[0203] for example, Figure 4 The processor 401 in the terminal device 40 shown can call the computer execution instructions stored in the memory 402 to enable the terminal device 40 to execute the carrier aggregation method in the above method embodiment. Specifically, Fig. 9 The functions / implementation processes of the transceiver module 901 and the processing module 902 can be Figure 4 The processor 401 in the terminal device 40 shown calls the computer execution instructions stored in the memory 402 to implement. Or, Fig. 9 The function / implementation process of the processing module 902 in Figure 4 The processor 401 in the terminal device 40 shown calls the computer execution instructions stored in the memory 402 to implement, Fig. 9 The function / implementation process of the transceiver module 901 can be Figure 4 The embodiment is implemented by the transceiver 403 in the terminal device 40 shown.

[0204] Since the communication device 40 provided in this embodiment can execute the above-mentioned carrier aggregation method, the technical effects that can be obtained can refer to the above-mentioned method embodiment and will not be repeated here.

[0205] Taking the communication device as the network device in the above method embodiment as an example, the transceiver module 901 is used to send a first information to the terminal device, and the first information is used to indicate a plurality of activated service cells configured by the network device for the terminal device, wherein the plurality of activated service cells are located in at least two different frequency bands. The processing module 902 is used to determine, among the plurality of activated service cells, a reference cell on each frequency band of at least two frequency bands corresponding to the plurality of activated service cells. The processing module 902 is also used to determine the transmission direction of the network device in each of the plurality of activated service cells; wherein, on each frequency band, the transmission direction of the network device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band.

[0206] Optionally, the transceiver module 901 is further used to receive second information from the terminal device, where the second information is used to indicate that the terminal device supports simultaneous transmission and reception of carriers on different frequency bands.

[0207] Optionally, the transceiver module 901 is further used to send third information to the terminal device, where the third information is used to indicate multiple service cells configured by the network device for the terminal device, wherein the multiple service cells include multiple activated service cells.

[0208] Optionally, the third information includes serving cell indexes of multiple serving cells.

[0209] Optionally, the first information includes cell status of one or more service cells among the multiple service cells, wherein the multiple activated service cells are service cells having corresponding cell status among the multiple service cells.

[0210] Optionally, the first information includes indication information of service cell indexes of multiple activated service cells.

[0211] Optionally, the transceiver module 901 is further used to send fourth information to the terminal device, where the fourth information includes a deactivation timer of one or more activated service cells among the multiple activated service cells.

[0212] Optionally, the transceiver module 901 is further used to send fifth information to the terminal device; the fifth information is used to indicate the network device to configure a deactivated service cell for the terminal device.

[0213] Optionally, the fifth information includes indication information of a service cell index of a deactivated service cell.

[0214] Optionally, the processing module 902 is used to determine, among multiple activated service cells, a reference cell on each frequency band of at least two frequency bands corresponding to multiple activated service cells, including: determining the activated service cell with the smallest service cell index on each frequency band of at least two frequency bands corresponding to multiple activated service cells as the reference cell on each frequency band.

[0215] Among them, all relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0216] In this embodiment, the communication device 90 is presented in the form of dividing various functional modules in an integrated manner. The "module" here may refer to a specific ASIC, circuit, processor and memory that executes one or more software or firmware programs, integrated logic circuit, and / or other devices that can provide the above functions.

[0217] In a simple embodiment, those skilled in the art will appreciate that the communication device 90 may be used Figure 4 The form of network device 50 is shown.

[0218] for example, Figure 4 The processor 501 in the network device 50 shown can call the computer execution instructions stored in the memory 502 to enable the network device 50 to execute the carrier aggregation method in the above method embodiment. Specifically, Fig. 9 The functions / implementation processes of the transceiver module 901 and the processing module 902 can be Figure 4 The processor 501 in the network device 50 shown calls the computer execution instructions stored in the memory 502 to implement. Or, Fig. 9 The function / implementation process of the processing module 902 in Figure 4 The processor 501 in the network device 50 shown calls the computer execution instructions stored in the memory 502 to implement, Fig. 9 The function / implementation process of the transceiver module 901 can be Figure 4 The embodiment is implemented by the transceiver 503 in the network device 50 shown.

[0219] Since the communication device 90 provided in this embodiment can execute the above-mentioned carrier aggregation method, the technical effects that can be obtained can refer to the above-mentioned method embodiment and will not be repeated here.

[0220] It should be noted that one or more of the above modules or units can be implemented by software, hardware or a combination of the two. When any of the above modules or units is implemented by software, the software exists in the form of computer program instructions and is stored in a memory, and a processor can be used to execute the program instructions and implement the above method flow. The processor can be built into an SoC (system on chip) or an ASIC, or it can be an independent semiconductor chip. In addition to the core used to execute software instructions for calculation or processing within the processor, it can also further include necessary hardware accelerators, such as field programmable gate arrays (FPGA), PLDs (programmable logic devices), or logic circuits that implement dedicated logic operations.

[0221] When the above modules or units are implemented in hardware, the hardware can be any one or any combination of a CPU, a microprocessor, a digital signal processing (DSP) chip, a microcontroller unit (MCU), an artificial intelligence processor, an ASIC, a SoC, an FPGA, a PLD, a dedicated digital circuit, a hardware accelerator or a non-integrated discrete device, which can run the necessary software or not rely on the software to execute the above method flow.

[0222] Optionally, an embodiment of the present application further provides a chip system, including: at least one processor and an interface, the at least one processor is coupled to a memory through the interface, and when the at least one processor executes a computer program or instruction in the memory, the method in any of the above method embodiments is executed. In one possible implementation, the communication device also includes a memory. Optionally, the chip system can be composed of chips, or can include chips and other discrete devices, which is not specifically limited in the embodiments of the present application.

[0223] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer 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 instructions may be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or may contain one or more servers, data centers and other data storage devices that can be integrated with the medium. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0224] Although the present application is described herein in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art may understand and implement other variations of the disclosed embodiments by viewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "one" or "an" does not exclude multiple situations. A single processor or other unit may implement several functions listed in a claim. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0225] Although the present application has been described in conjunction with specific features and embodiments thereof, it is obvious that various modifications and combinations may be made thereto without departing from the spirit and scope of the present application. Accordingly, this specification and the drawings are merely exemplary illustrations of the present application as defined by the appended claims, and are deemed to have covered any and all modifications, variations, combinations or equivalents within the scope of the present application. Obviously, those skilled in the art may make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A carrier aggregation method, characterized in that: The method comprises: Receiving first information from a network device, where the first information is used to indicate a plurality of activated serving cells configured by the network device for a terminal device, wherein the plurality of activated serving cells are located in at least two different frequency bands; Determine, among the multiple activated serving cells, a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated serving cells; Determine the transmission direction of the terminal device in each of the multiple activated service cells; wherein, on each frequency band, the transmission direction of the terminal device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band.

2. The method according to claim 1, characterized in that The method further comprises: Send second information to the network device, where the second information is used to indicate that the terminal device supports simultaneous transmission and reception of carriers on different frequency bands.

3. The method according to claim 1, characterized in that The method further comprises: Receive third information from the network device, where the third information is used to indicate multiple service cells configured by the network device for the terminal device, wherein the multiple service cells include the multiple activated service cells.

4. The method according to claim 3, characterized in that The first information includes cell status of one or more service cells among the multiple service cells, wherein the multiple activated service cells are service cells among the multiple service cells that have corresponding cell status.

5. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: receiving fourth information from the network device, the fourth information comprising a deactivation timer of one or more activated serving cells among the plurality of activated serving cells; According to the fourth information, an activated serving cell that has not monitored data during the running of the deactivation timer is deactivated from one or more activated serving cells among the multiple activated serving cells.

6. The method according to any one of claims 1 to 4, characterized in that: The method further comprises: receiving fifth information from the network device, where the fifth information is used to indicate a deactivated serving cell configured by the network device for the terminal device; Deactivate the deactivated serving cell indicated by the fifth information from the multiple activated serving cells.

7. The method according to any one of claims 1 to 4, characterized in that: The determining, among the multiple activated serving cells, a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated serving cells comprises: An activated serving cell having the smallest serving cell index on each frequency band of at least two frequency bands corresponding to the multiple activated serving cells is determined as a reference cell on each frequency band.

8. A carrier aggregation method, characterized in that: The method comprises: Sending first information to a terminal device, where the first information is used to indicate a plurality of activated serving cells configured by a network device for the terminal device, wherein the plurality of activated serving cells are located in at least two different frequency bands; Determine, among the multiple activated serving cells, a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated serving cells; Determine the transmission direction of the network device in each of the multiple activated service cells; wherein, on each frequency band, the transmission direction of the network device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band.

9. The method according to claim 8, characterized in that The method further comprises: Receive second information from the terminal device, where the second information is used to indicate that the terminal device supports simultaneous transmission and reception of carriers on different frequency bands.

10. The method according to claim 8, characterized in that The method further comprises: Sending third information to the terminal device, the third information is used to indicate a plurality of service cells configured by the network device for the terminal device, wherein the plurality of service cells include the plurality of activated service cells.

11. The method according to claim 10, characterized in that The first information includes cell status of one or more service cells among the multiple service cells, wherein the multiple activated service cells are service cells among the multiple service cells that have corresponding cell status.

12. The method according to any one of claims 8 to 11, characterized in that: The method further comprises: Send fourth information to the terminal device, where the fourth information includes a deactivation timer of one or more activated service cells among the multiple activated service cells.

13. The method according to any one of claims 8 to 11, characterized in that: The method further comprises: Send fifth information to the terminal device; the fifth information is used to indicate the deactivated service cell configured by the network device for the terminal device.

14. The method according to any one of claims 8 to 11, characterized in that: The determining, among the multiple activated serving cells, a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated serving cells comprises: An activated serving cell having the smallest serving cell index on each frequency band of at least two frequency bands corresponding to the multiple activated serving cells is determined as a reference cell on each frequency band.

15. A communication device, characterized in that: The communication device comprises: a transceiver module and a processing module; The transceiver module is used to receive first information from a network device, where the first information is used to indicate a plurality of activated serving cells configured by the network device for the terminal device, wherein the plurality of activated serving cells are located in at least two different frequency bands; The processing module is configured to determine, among the multiple activated serving cells, a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated serving cells; The processing module is also used to determine the transmission direction of the communication device in each activated service cell among the multiple activated service cells; wherein, on each frequency band, the transmission direction of the terminal device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band.

16. The communication device according to claim 15, characterized in that: The transceiver module is further used to send second information to the network device, where the second information is used to indicate that the terminal device supports simultaneous transmission and reception of carriers on different frequency bands.

17. The communication device according to claim 15, characterized in that: The transceiver module is further used to receive third information from the network device, where the third information is used to indicate a plurality of service cells configured by the network device for the terminal device, wherein the plurality of service cells include the plurality of activated service cells.

18. The communication device according to claim 17, characterized in that: The first information includes cell status of one or more service cells among the multiple service cells, wherein the multiple activated service cells are service cells among the multiple service cells that have corresponding cell status.

19. The communication device according to any one of claims 15 to 18, characterized in that: The transceiver module is further configured to receive fourth information from the network device, wherein the fourth information includes a deactivation timer of one or more activated serving cells among the multiple activated serving cells; The processing module is further configured to deactivate, based on the fourth information, an activated serving cell from one or more activated serving cells among the multiple activated serving cells, which activated serving cell has not monitored data during the operation of the deactivation timer.

20. The communication device according to any one of claims 15 to 18, characterized in that: The transceiver module is further used to receive fifth information from the network device, where the fifth information is used to indicate a deactivated serving cell configured by the network device for the terminal device; The processing module is further used to deactivate the deactivated service cell indicated by the fifth information from the multiple activated service cells.

21. The communication device according to any one of claims 15 to 18, characterized in that: The processing module is used to determine, among the multiple activated serving cells, a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated serving cells, including: Used to determine the activated serving cell with the smallest serving cell index on each frequency band among at least two frequency bands corresponding to the multiple activated serving cells as the reference cell on each frequency band.

22. A communication device, characterized in that: The communication device comprises: a transceiver module and a processing module; The transceiver module is used to send first information to the terminal device, where the first information is used to indicate multiple activated service cells configured by the network device for the terminal device, wherein the multiple activated service cells are located in at least two different frequency bands; The processing module is configured to determine, among the multiple activated serving cells, a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated serving cells; The processing module is also used to determine the transmission direction of the network device in each of the multiple activated service cells; wherein, on each frequency band, the transmission direction of the network device in the reference cell and other cells is the same, and the other cells are activated service cells other than the reference cell on each frequency band.

23. The communication device according to claim 22, characterized in that: The transceiver module is further used to receive second information from the terminal device, where the second information is used to indicate that the terminal device supports simultaneous transceiver of carriers on different frequency bands.

24. The communication device according to claim 22, characterized in that The transceiver module is further used to send third information to the terminal device, where the third information is used to indicate a plurality of service cells configured by the network device for the terminal device, wherein the plurality of service cells include the plurality of activated service cells.

25. The communication device according to claim 24, characterized in that The first information includes cell status of one or more service cells among the multiple service cells, wherein the multiple activated service cells are service cells among the multiple service cells that have corresponding cell status.

26. The communication device according to any one of claims 22 to 25, characterized in that: The transceiver module is further used to send fourth information to the terminal device, and the fourth information includes a deactivation timer of one or more activated service cells among the multiple activated service cells.

27. The communication device according to any one of claims 22 to 25, characterized in that: The transceiver module is further used to send fifth information to the terminal device; the fifth information is used to indicate a deactivated service cell configured by the network device for the terminal device.

28. The communication device according to any one of claims 22 to 25, characterized in that: The processing module is used to determine, among the multiple activated serving cells, a reference cell on each frequency band of at least two frequency bands corresponding to the multiple activated serving cells, including: Used to determine the activated serving cell with the smallest serving cell index on each frequency band among at least two frequency bands corresponding to the multiple activated serving cells as the reference cell on each frequency band.

29. A communication device, characterized in that: The communication device comprises a processor and a storage medium, wherein the storage medium stores instructions, and when the instructions are executed by the processor, the communication device executes the method according to any one of claims 1 to 14.

30. A computer-readable storage medium, characterized in that: The computer-readable storage medium comprises instructions, and when the instructions are executed by a processor, the method according to any one of claims 1 to 14 is implemented.

31. A computer program product, characterized in that The computer program product comprises instructions, and when the instructions are executed by a processor, the method according to any one of claims 1 to 14 is implemented.

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