A carrier aggregation method and a communication device

Abstract

The application discloses a carrier aggregation method and a communication device, relates to the technical field of communication, and can improve the use rate of discrete spectrum. The method is as follows: first configuration information is sent, including a first CBW and a first BWP of a terminal device on a first carrier, the first CBW being the bandwidth of the first carrier; second configuration information is sent, including a second CBW and a second BWP of the terminal device on a second carrier, the second CBW being the bandwidth of the second carrier; the spectrum of the first BWP and the second BWP is discontinuous, the second carrier and the first carrier support combination into downlink in-band continuous CA; at least one of the first carrier and the second carrier satisfies the following conditions: the first carrier includes an operator spectrum and a non-operator spectrum, and the first BWP is an available BWP on the operator spectrum; the second carrier includes the operator spectrum and the non-operator spectrum, and the second BWP is an available BWP on the operator spectrum. The embodiment of the application is used for carrier aggregation.

Description

TECHNICAL FIELD

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

[0002] Carrier aggregation (CA) usually aggregates the spectrum of standard cell bandwidth defined by standards, for example, 20M, 30M, …, 90M and 100M, etc. For the discrete spectrum integration use scenario in the same frequency band, the use of carrier aggregation has a certain degree of limitation. For example, in some scenarios, there are in-band continuous CA and in-band discontinuous CA in the same frequency band for the same operator, and the in-band discontinuous CA is a combination of multiple standard-defined different CCs. In other scenarios, there are multiple discontinuous carriers in the same frequency band, and the multiple discontinuous carriers are bandwidth spectrums of different operators, and even part of the bandwidth spectrum is not a standard-defined bandwidth. The bandwidth spectrum without definition will not be able to perform in-band discontinuous CA for the same operator, and the use of CA is limited.

[0003] Moreover, in a time division duplex (TDD) scenario, for in-band discontinuous CA, a doubled radio frequency channel is required. Once the terminal device is shipped, subsequent OTA software upgrade cannot support more discrete spectrum combinations. For example, the N40 frequency band currently does not define in-band discontinuous CA combinations, and the current inventory terminal device cannot support the in-band discontinuous CA of N40 through OTA upgrade in the future. SUMMARY

[0004] Embodiments of the present application provide a carrier aggregation method and a communication device, which can improve the use rate of discrete spectrum.

[0005] To achieve the above-mentioned purpose, the embodiments of the present application adopt the following technical solutions.

[0006] In a first aspect, a carrier aggregation method is provided, which includes: receiving first configuration information, the first configuration information including a first channel bandwidth (CBW) and a first bandwidth part (BWP) of a terminal device on a first carrier, the first CBW being a bandwidth of the first carrier; receiving second configuration information, the second configuration information including a second CBW and a second BWP of the terminal device on a second carrier, the second CBW being a bandwidth of the second carrier; the first BWP and the second BWP being discontinuous in spectrum, and the second carrier and the first carrier supporting combination into downlink intra-band contiguous carrier aggregation (CA). Wherein, the first carrier satisfies condition 1, or the second carrier satisfies condition 2, or the first carrier and the second carrier satisfy condition 1 and condition 2: condition 1 is that the first carrier includes an in-operator spectrum and a non-in-operator spectrum, and the first BWP is an available BWP on the in-operator spectrum in the first carrier; and condition 2 is that the second carrier includes an in-operator spectrum and a non-in-operator spectrum, and the second BWP is an available BWP on the in-operator spectrum in the second carrier.

[0007] Wherein, the non-in-operator spectrum of the terminal device can be a spectrum allocated to other operators for use, or can be an idle spectrum not allocated for use.

[0008] Embodiments of the present application can be applied in a TDD scenario and are executed by a terminal device. If the bandwidth of one carrier is a virtual standard bandwidth, the carrier includes an in-operator spectrum and a non-in-operator spectrum. If at least one of the first carrier and the second carrier includes an in-operator spectrum and a non-in-operator spectrum, and the first carrier and the second carrier support downlink intra-band contiguous CA, in the case that the spectrum bandwidth for CA specified in a standard must be a standard spectrum bandwidth, one of the bandwidth of the first carrier and the bandwidth of the second carrier is a virtual standard bandwidth, and the other is a virtual standard bandwidth or a standard bandwidth.

[0009] In the present application, if the first carrier corresponds to the first cell and the second carrier corresponds to the second cell, the first configuration information is equivalent to the configuration of the terminal device as the primary cell, that is, the first cell is the primary cell, and the second configuration information is equivalent to the configuration of the terminal device as the secondary cell, that is, the second cell is the secondary cell. When the first CBW configured for the terminal device is the bandwidth of the first carrier and the second CBW is the bandwidth of the second carrier, if the first carrier and the second carrier support downlink intra-band contiguous CA, after the first configuration information and the second configuration information are sent to the terminal device, the first carrier and the second carrier of the spectrum where the first BWP and the second BWP of the two spectrum discontinuous spectrums are combined into downlink intra-band contiguous CA. On the downlink intra-band contiguous CA, the first BWP and the second BWP are both useful spectrums of the terminal device. In this way, even if the spectrums of the first BWP and the second BWP are discrete non-standard bandwidth spectrums of the operator, since the bandwidth of the first carrier and the second carrier is a virtual standard bandwidth or a standard bandwidth, the combination into downlink intra-band contiguous CA is supported, the first BWP and the second BWP can be used jointly to effectively integrate the discrete spectrums in the TDD scenario, improve the use rate of the discrete spectrums, and improve the downlink throughput of the terminal device.

[0010] Moreover, in the TDD scenario, the second cell supporting downlink intra-band contiguous CA will multiplex the radio frequency channel of the first cell, without increasing the hardware cost of the terminal device. For the uplink of the terminal device, the uplink signal is still sent on the first BWP of the first cell in the initial access, and the local oscillator spectrum is at the center frequency position of the first BWP, which can avoid the uplink interference of the terminal device to the non-operator in the first cell.

[0011] In a possible design, receiving the first configuration information includes: in the case of initial access to the first carrier, receiving the first configuration information on the initial uplink and downlink BWP of the first carrier. That is, when the terminal device selects the first cell as the initial access cell, the initial uplink and downlink BWP can be parsed from the system message of the first cell, and the access process with the network device is initiated on the initial uplink and downlink BWP. When the terminal device accesses the first cell, the network device can send the first configuration information of the terminal device after accessing the first cell to the terminal device on the initial uplink and downlink BWP, indicating the available BWP of the terminal device in the first cell, that is, the first BWP. The first BWP can include the resources of the initial uplink and downlink BWP, that is, after access, the terminal device switches the available BWP from the initial uplink and downlink BWP to the first BWP. Thus, when the bandwidth of the first carrier is a virtual standard bandwidth, the first cell is a virtual standard large bandwidth cell, and the terminal device can communicate on the available BWP of the first cell.

[0012] In one possible design, before receiving the second configuration information, the method further includes: transmitting an uplink signal on the first BWP, and receiving a downlink signal on the first BWP. That is, after the terminal device initially accesses the first cell, if the first cell is a virtual standard large bandwidth cell, the terminal device only performs uplink and downlink communication on the available BWP of the first cell, i.e., the first BWP. The second cell is only used for downlink intra-band contiguous CA, and the BWP used for uplink communication of the terminal device is still the first BWP in the first cell. For uplink communication of the terminal device, the local oscillator frequency is at the center frequency position of the first BWP, which can avoid uplink interference to other operators in the first cell.

[0013] In one possible design, before receiving the first configuration information, the method further includes: transmitting capability information of the terminal device, the capability information including an indication that the terminal device supports intra-band contiguous CA, and a carrier bandwidth supported by the terminal device. If the carrier bandwidth supported by the terminal device includes the bandwidth of the first carrier initially accessed, the network device can send the first configuration information to the terminal device, so that the terminal device performs uplink and downlink communication on the first BWP of the first cell. If the terminal device supports intra-band contiguous CA and supports the bandwidth of the second carrier, the network device can configure the second cell for the terminal device, and combine the first carrier and the second carrier into downlink intra-band contiguous CA, to improve downlink throughput of the terminal device.

[0014] In one possible design, receiving the second configuration information includes: receiving the second configuration information on the first BWP. That is, the network device can send the second configuration information to the terminal device on the active BWP of the first carrier when configuring the second carrier, to improve downlink transmission efficiency of the terminal device.

[0015] In one possible design, the method further includes: receiving an activation indication, the activation indication being used to activate the second carrier; and receiving a downlink signal on the first carrier and the second carrier in a case that the second carrier is activated. In this way, when one of the first cell and the second cell is a virtual standard large bandwidth cell, and the other is a virtual standard large bandwidth cell or a standard bandwidth cell, the first BWP and the second BWP with two discontinuous frequency spectrums can be aggregated for use, to improve downlink throughput of the terminal device.

[0016] In a possible design, the method further includes: sending a channel quality indication, where the channel quality indication is used to indicate a downlink channel quality of the terminal device in receiving the downlink signal on the downlink intra-band contiguous CA; in a case where the downlink channel quality does not satisfy a channel quality threshold, receiving a deactivation indication, where the deactivation indication is used to instruct the terminal device to deactivate the second carrier; and in a case where the second carrier is deactivated, receiving the downlink signal on the first BWP and sending the uplink signal on the first BWP. For example, on the downlink intra-band contiguous CA, the terminal device further receives a downlink signal of a non-home operator, and when the terminal device receives a signal strength of the non-home operator that is higher than a signal strength of the home operator and a difference between the signal strengths is large, the terminal device has poor downlink demodulation performance. In this case, the network device can instruct the terminal device to deactivate the second cell, so that the terminal device reverts to a single-carrier mode and performs uplink and downlink communication only on the first BWP of the first cell, and the terminal device restores the downlink demodulation performance in the single-carrier mode.

[0017] In a second aspect, a carrier aggregation method is provided, which includes: sending first configuration information, where the first configuration information includes a first channel bandwidth (CBW) and a first bandwidth part (BWP) of a terminal device on a first carrier, and the first CBW is a bandwidth of the first carrier; sending second configuration information, where the second configuration information includes a second CBW and a second BWP of the terminal device on a second carrier, and the second CBW is a bandwidth of the second carrier; the first BWP and the second BWP are discontinuous in spectrum, and the second carrier and the first carrier support combination into downlink intra-band contiguous carrier aggregation (CA). Wherein the first carrier satisfies condition 1, or the second carrier satisfies condition 2, or the first carrier and the second carrier satisfy condition 1 and condition 2: condition 1 is that the first carrier includes home operator spectrum and non-home operator spectrum, and the first BWP is an available BWP on the home operator spectrum in the first carrier; and condition 2 is that the second carrier includes home operator spectrum and non-home operator spectrum, and the second BWP is an available BWP on the home operator spectrum in the second carrier.

[0018] The beneficial effects of the second aspect can be referred to the description of the first aspect.

[0019] In a possible design, the sending of the first configuration information includes: in a case where the terminal device initially accesses the first carrier, sending the first configuration information to the terminal device on an initial BWP of the first carrier.

[0020] In a possible design, before the sending of the second configuration information, the method further includes: sending a downlink signal to the terminal device on the first BWP, and receiving an uplink signal sent by the terminal device on the first BWP.

[0021] In a possible design, before the first configuration information is sent, the method further includes: receiving capability information sent by the terminal device, the capability information including an indication that the terminal device supports in-band contiguous CA, and a carrier bandwidth supported by the terminal device.

[0022] In a possible design, the second configuration information is sent in the following manner: the second configuration information is sent to the terminal device on the first BWP.

[0023] In a possible design, the method further includes: sending, to the terminal device, an activation indication, the activation indication being used to activate the second carrier; and sending, to the terminal device, a downlink signal on the first carrier and the second carrier.

[0024] In a possible design, the method further includes: receiving a channel quality indication sent by the terminal device, the channel quality indication being used to indicate a downlink channel quality of the terminal device in receiving a downlink signal on the downlink in-band contiguous CA; in a case where the downlink channel quality does not satisfy a channel quality threshold, sending a deactivation indication, the deactivation indication being used to instruct the terminal device to deactivate the second carrier; sending, to the terminal device, a downlink signal on the first BWP, and receiving, from the terminal device, an uplink signal on the first BWP.

[0025] In a third aspect, a communication apparatus is provided, including: a receiving unit, configured to receive first configuration information, the first configuration information including a first channel bandwidth (CBW) and a first bandwidth part (BWP) of a terminal device on a first carrier, the first CBW being a bandwidth of the first carrier; and receive second configuration information, the second configuration information including a second CBW and a second BWP of the terminal device on a second carrier, the second CBW being a bandwidth of the second carrier; the first BWP and the second BWP being discontinuous in spectrum, and the second carrier and the first carrier supporting combination into a downlink in-band contiguous carrier aggregation (CA). Wherein the first carrier satisfies condition 1, or the second carrier satisfies condition 2, or the first carrier and the second carrier satisfy condition 1 and condition 2: condition 1 is that the first carrier includes an in-operator spectrum and a non-in-operator spectrum, and the first BWP is an available BWP on the in-operator spectrum in the first carrier; and condition 2 is that the second carrier includes an in-operator spectrum and a non-in-operator spectrum, and the second BWP is an available BWP on the in-operator spectrum in the second carrier.

[0026] In a possible design, the receiving unit is configured to: in a case of initial access to the first carrier, receive the first configuration information on an initial uplink-downlink BWP of the first carrier.

[0027] In a possible design, the apparatus further includes a sending unit, configured to send an uplink signal on the first BWP; and the receiving unit is further configured to receive a downlink signal on the first BWP.

[0028] In a possible design, the apparatus further includes a sending unit configured to send, before receiving the first configuration information, capability information of the terminal device, the capability information including an indication that the terminal device supports intra-band contiguous CA.

[0029] In a possible design, the apparatus includes a receiving unit configured to receive, on the first BWP, the second configuration information.

[0030] In a possible design, the receiving unit is further configured to receive an activation indication, the activation indication being used to activate the second carrier; and receive, in a case that the second carrier is activated, the downlink signal on the first carrier and the second carrier.

[0031] In a possible design, the apparatus further includes a sending unit configured to send a channel quality indication, the channel quality indication being used to indicate a downlink channel quality of the terminal device in receiving the downlink signal on the downlink intra-band contiguous CA; and the receiving unit is further configured to receive, in a case that the downlink channel quality does not satisfy a channel quality threshold, a deactivation indication, the deactivation indication being used to instruct the terminal device to deactivate the second carrier; and the receiving unit is further configured to receive, in a case that the second carrier is deactivated, the downlink signal on the first BWP, and the sending unit is configured to send the uplink signal on the first BWP.

[0032] In a fourth aspect, a communication apparatus is provided, which includes a sending unit configured to send first configuration information, the first configuration information including a first channel bandwidth (CBW) and a first bandwidth part (BWP) of a terminal device on a first carrier, the first CBW being a bandwidth of the first carrier; and send second configuration information, the second configuration information including a second CBW and a second BWP of the terminal device on a second carrier, the second CBW being a bandwidth of the second carrier; the first BWP and the second BWP being discontinuous in spectrum, and the second carrier and the first carrier supporting combination into a downlink intra-band contiguous carrier aggregation (CA). Wherein the first carrier satisfies condition 1, or the second carrier satisfies condition 2, or the first carrier and the second carrier satisfy condition 1 and condition 2: condition 1 is that the first carrier includes an in-operator spectrum and a non-in-operator spectrum, and the first BWP is an available BWP on the in-operator spectrum in the first carrier; and condition 2 is that the second carrier includes an in-operator spectrum and a non-in-operator spectrum, and the second BWP is an available BWP on the in-operator spectrum in the second carrier.

[0033] In a possible design, the sending unit is configured to send, in a case that the terminal device initially accesses the first carrier, the first configuration information to the terminal device on an initial uplink first BWP of the first carrier.

[0034] In a possible design, the sending unit is further configured to send, before sending the second configuration information, a downlink signal to the terminal device on the first BWP; and the receiving unit is configured to receive, on the first BWP, an uplink signal sent by the terminal device.

[0035] In a possible design, the receiving unit is configured to receive, before the first configuration information is sent, capability information sent by the terminal device, the capability information including an indication that the terminal device supports intra-band contiguous CA and carrier bandwidths supported by the terminal device.

[0036] In a possible design, the sending unit is configured to send, to the terminal device, the second configuration information on the first BWP.

[0037] In a possible design, the sending unit is further configured to send an activation indication, the activation indication being used to activate the second carrier; and send, to the terminal device, a downlink signal on the first carrier and the second carrier.

[0038] In a possible design, the receiving unit is configured to receive a channel quality indication sent by the terminal device, the channel quality indication being used to indicate a downlink channel quality of the terminal device in receiving a downlink signal on the downlink intra-band contiguous CA; the sending unit is further configured to send, in a case where the downlink channel quality does not satisfy a channel quality threshold, a deactivation indication, the deactivation indication being used to instruct the terminal device to deactivate the second carrier; and the sending unit is further configured to send, to the terminal device, a downlink signal on the first BWP, and the receiving unit is further configured to receive, from the terminal device, an uplink signal on the first BWP.

[0039] In a fifth aspect, a device is provided. The device provided in the present application has the function of implementing the behavior of the network device or the terminal device in one or more of the possible implementation manners of the first aspect to the second aspect and each aspect, and includes means corresponding to the steps or functions described in the method aspects. The steps or functions can be implemented by software, or hardware, or a combination of hardware and software.

[0040] In a possible design, the device includes one or more processors, and further includes a communication unit. The one or more processors are configured to support the device to perform the corresponding functions of the network device in the above method. For example, determining the first configuration information and the second configuration information. The communication unit is configured to support the device to communicate with other devices, and to implement the receiving and / or sending functions. For example, sending the first configuration information and the second configuration information.

[0041] Optionally, the device can further include one or more memories configured to be coupled to the processor, and save necessary program instructions and / or data of the network device. The one or more memories can be integrated with the processor, or can be arranged separately from the processor. The present application does not make any limitation.

[0042] The device can be a base station, a next-generation base station (gNodeB, gNB), a transmission and receiving point (TRP), a distributed unit (DU), or a centralized unit (CU), etc. The communication unit can be a transceiver or a transceiver circuit. Optionally, the transceiver can also be an input / output circuit or an interface.

[0043] The device can also be a chip. The communication unit can be the chip's input / output circuitry or interface.

[0044] In another possible design, the aforementioned device includes a processor coupled to a memory. The memory stores a computer program, and the processor executes the computer program in the memory, causing the device to perform the methods performed by the network device in the second aspect, or any possible implementation of the second aspect. Furthermore, the device may also include a transceiver, under the control of the processor, to perform transmission and / or reception.

[0045] In one possible design, the aforementioned device includes one or more processors, and further, may include a communication unit. The one or more processors are configured to support the device in performing corresponding functions of the terminal device in the above method. For example, activating a second cell. The communication unit is used to support the device in communicating with other devices, implementing receiving and / or transmitting functions. For example, transmitting or receiving scheduling information.

[0046] Optionally, the device may further include one or more memories for coupling with the processor, which store program instructions and / or data necessary for the device. The one or more memories may be integrated with the processor or disposed separately from the processor. This application is not limiting.

[0047] The device can be a smart terminal or wearable device, etc., and the communication unit can be a transceiver or a transceiver circuit. Optionally, the transceiver can also be an input / output circuit or an interface.

[0048] The device can also be a chip. The communication unit can be the chip's input / output circuitry or interface.

[0049] In another possible design, the aforementioned device includes a processor coupled to a memory. The memory stores a computer program, and the processor executes the computer program in the memory, causing the device to perform the method performed by the terminal device in any of the following possible implementations: the first aspect, the second aspect, the third aspect, any of the first aspect, any of the second aspect, or any of the third aspect.

[0050] In a sixth aspect, a system is provided, which includes the network device and the terminal device described above.

[0051] In a seventh aspect, a readable storage medium or program product is provided for storing a program or instructions, the program or instructions including instructions for performing the method in any one of the first aspect to the second aspect, or any one of the possible implementation manners of any one of the first aspect to the second aspect.

[0052] In an eighth aspect, a chip or circuit is provided for performing the method in any one of the first aspect to the second aspect, or any one of the possible implementation manners of any one of the first aspect to the second aspect.

[0053] The method, device, system and readable storage medium provided by the embodiments of the present application can be applied to an MBB network. It can be understood that any one of the network device, terminal device, communication device, chip, system, computer readable storage medium or computer program product provided above can be applied to the corresponding method provided above, and thus the beneficial effects achieved thereby can refer to the beneficial effects in the corresponding method, which will not be described herein again.

[0054] These aspects or other aspects of the present application will be more apparent in the following description. BRIEF DESCRIPTION OF DRAWINGS

[0055] Figure 1 An architecture schematic diagram of a communication system provided by the embodiments of the present application;

[0056] Figure 2 A schematic diagram of a TDD in-band discontinuous multi-segment discrete spectrum provided by the embodiments of the present application;

[0057] Figure 3 A schematic diagram of a flexible multi-frequency spectrum combination and flexible scheduling scheme provided by the embodiments of the present application;

[0058] Figure 4 A schematic diagram of uplink and downlink interference of a virtual large bandwidth of a discrete multi-frequency spectrum provided by the embodiments of the present application;

[0059] Figure 5 A flow schematic diagram of a carrier aggregation method provided by the embodiments of the present application;

[0060] Figure 6 A schematic diagram of downlink in-band continuous CA provided by the embodiments of the present application;

[0061] Figure 7 A flow schematic diagram of a carrier aggregation method provided by the embodiments of the present application;

[0062] Figure 8 A schematic diagram of two cells of an in-band continuous CA provided by an embodiment of the present application is a virtual standard large bandwidth cell;

[0063] Figure 9 A schematic diagram of a structure of a communication device provided by an embodiment of the present application is shown in FIG. 2.

[0064] Figure 10 A schematic diagram of a structure of a communication device provided by an embodiment of the present application is shown in FIG. 2. DETAILED DESCRIPTION

[0065] For the convenience of understanding, some descriptions of concepts related to embodiments of the present application are given as examples for reference. As shown below:

[0066] Time division duplex (TDD): is a kind of full duplex communication technology used in mobile communication systems, which is a technology for distinguishing wireless channels in downlink operation in frame period and continuing uplink operation. In a mobile communication system in TDD mode, reception and transmission are in different time slots of the same frequency channel (i.e. carrier), and time is used to separate the reception and transmission channels.

[0067] Frequency division duplex (FDD): refers to the transmission of uplink and downlink on different frequencies.

[0068] Carrier: is the radio signal (i.e. electromagnetic wave) with specific frequency, bandwidth and standard transmitted by the radio frequency device of the base station or terminal, which is the main body of information in wireless mobile communication. Among them, the carrier used for transmission by the base station is called downlink carrier, and the carrier used for transmission by the terminal is called uplink carrier.

[0069] Cell: is described from the perspective of resource management or mobility management by a high layer (such as a radio resource control layer, a medium access control layer and other protocol layers above the physical layer). The coverage of each network device can be divided into one or more cells.

[0070] In the current NR standard, one cell can be configured with one downlink carrier, and optionally, one or two uplink carriers. For a terminal device, the cell providing services for it is called a serving cell. The cell involved in the present application can also be a serving cell.

[0071] Subcarrier spacing (SCS): in new radio (NR), multiple SCSs are defined, and the SCS corresponding to the SCS sequence is 2 μ• 15 kHz. For example, SCS with serial numbers 0~4 correspond to 15 KHz, 30 KHz, 60 KHz, 120 KHz and 240 KHz respectively.

[0072] Carrier aggregation (CA): In order to realize high-speed transmission, there is a CA mechanism in NR. Terminals supporting CA can simultaneously transmit data on multiple carriers to improve data transmission rate.

[0073] Each carrier in CA is also called a member carrier or a component carrier (CC).

[0074] In multiple cells of CA, the downlink carrier of one cell carries the control channel, and the uplink and downlink data channels of another cell can be scheduled.

[0075] In-band continuous CA: refers to multiple CCs combined into CA belong to the same frequency band, and the spectrum of each CC is continuous, and the center frequency interval meets the requirements of the protocol (38101-1).

[0076] 1) For a frequency band with a channel raster of 100 kHz, the nominal channel spacing requirement between the center frequencies of two adjacent CCs is:

[0077]

[0078] 2) For a frequency band with a channel raster other than 100 kHz, the center frequency spacing requirement between two adjacent CCs is:

[0079]

[0080] Where n = μ0, μ0 is the maximum subcarrier spacing configuration μ, BW Channel(1) and BW Channel(2) are the channel bandwidths of the two CCs,

[0081] GB Channel(i) is the minimum guard band of the CC with channel bandwidth i when the configured subcarrier spacing is μ0, and i is an integer.

[0082] In-band non-continuous CA: refers to multiple CCs combined into CA belong to the same frequency band, and the spectrum is discontinuous, which does not meet the above protocol requirements of in-band continuous CA.

[0083] Primary cell (Pcell): also known as primary cell, is a cell working in the primary frequency band. The UE performs initial connection establishment process or starts connection re-establishment process in this cell. In the handover process, this cell is indicated as the primary cell.

[0084] Secondary cell (Scell): Also referred to as a secondary cell, is a cell operating on a secondary frequency band. Once a radio resource control (RRC) connection is established, a secondary cell can be configured to provide additional radio resources.

[0085] Bandwidth part (BWP): A new concept introduced by NR, aiming to adapt to various types of terminal devices. Because NR is a high-bandwidth system, not all terminal devices can apply such high bandwidth, so this small-bandwidth system can be used.

[0086] The BWP is equivalent to dividing the 5G frequency spectrum into many small pieces at a certain time. Each BWP can use different numerologies, and its bandwidth, subcarrier spacing, and other control parameters can be different. It is equivalent to dividing a 5G cell into several sub-cells with different configurations to adapt to different types of terminals and service types.

[0087] Control resource set (CORESET): CORESET is a concept introduced in NR. A CORESET is defined on a cell and contains a set of contiguous or non-contiguous resource blocks (RBs) in the frequency domain and 1 / 2 / 3 contiguous OFDM symbols in the time domain. A search space with an aggregation level (AL) of L is defined as a set of a number of PDCCH candidates with a size of L control channel elements. A search space set is a set of search spaces with different ALs. A search space set is associated with a CORESET.

[0088] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. In the description of the embodiments of the present application, unless otherwise specified, " / " represents the meaning of or, for example, A / B can represent A or B; in this article, "and / or" is only a description of the association between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent three cases: A alone, A and B together, and B alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0089] The terms "first", "second", "third", etc. are used herein only to describe different instances, and are not used to denote or imply relative importance or a number of the technical features indicated. Thus, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the embodiments, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0090] As shown in Figure 1 , it is a schematic diagram of the architecture of a communication system to which embodiments of the present application are applied. As shown in Figure 1 , the communication system 10 includes a network device 110 and at least one terminal device (such as the terminal device 120 in Figure 1 ). The terminal device is connected to the network device in a wireless manner, and the network device can be a radio access network device, which is connected to a core network device in a wireless or wired manner. The core network device and the radio access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the radio access network device can be integrated on the same physical device, or a physical device can integrate part of the functions of the core network device and part of the functions of the radio access network device. The terminal device can be fixed or mobile. Figure 1 This is only a schematic diagram, and the communication system 10 can also include other network devices, such as wireless relay devices and wireless backhaul devices, which are not shown in Figure 1 . Embodiments of the present application do not limit the number of radio access network devices and terminal devices included in the communication system 10.

[0091] The network device 110 is an access device through which the terminal device accesses the communication system 10 in a wireless manner, and can be a base station NodeB, an evolved base station eNodeB, a base station in a NR mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi (wireless fidelity) system, etc. Embodiments of the present application do not limit the specific technology and specific device form adopted by the network device 110.

[0092] The network device 110 can provide communication coverage for a specific geographical area, and can communicate with terminal devices located in the coverage area. As shown in Figure 1 , the network device 110 can communicate with the terminal device 120 within its coverage range. Figure 1 Four cells provided with communication coverage by the network device 110 are shown in Figure 1 , which are cell 1, cell 2, cell 3, and cell 4. The four cells can correspond to the same frequency range or different frequency ranges. As an example, the terminal device 120 is located in the cell 2.

[0093] The terminal device can also be referred to as a terminal, a UE, a mobile station (MS), a mobile terminal (MT), or the like. The terminal device can be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical 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, or the like.

[0094] The network device and the terminal device can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on water; and can also be deployed on airplanes, balloons, and satellites in the air. Embodiments of the present application do not limit the application scenarios of the network device and the terminal device.

[0095] Embodiments of the present application can be applied to downlink signal transmission and can also be applied to uplink signal transmission. For downlink signal transmission, the sending device is a wireless access network device, and the corresponding receiving device is a terminal device. For uplink signal transmission, the sending device is a terminal device, and the corresponding receiving device is a wireless access network device. The transmission direction of the signal in embodiments of the present application is not limited. The network device 110 and the terminal device, and the terminal device and the terminal device can communicate through a licensed spectrum, can also communicate through an unlicensed spectrum, and can also communicate through both the licensed spectrum and the unlicensed spectrum. The wireless access network device and the terminal device, and the terminal device and the terminal device can communicate through a spectrum below the 6th generation mobile networks (6G), can also communicate through a spectrum above 6G, and can also communicate through both the spectrum below 6G and the spectrum above 6G. Embodiments of the present application do not limit the spectrum resources used between the network device 110 and the terminal device.

[0096] The communication architecture provided by the communication system 10 described above is applied to the present application, which is described below.

[0097] The 3rd generation partnership project (3GPP) standard defines the maximum bandwidth of a single carrier, i.e., one CC, that a terminal device can support. For example, for 5G TDD frequency range (FR) 1, a single carrier can support a maximum bandwidth of 100 MHz. With the update of mobile networks, more and more inventory spectrum is released for 5G networks, but due to the different historical release time pace of various spectrums, there are multiple discontinuous carriers in the same frequency band for the same operator, and even some spectrum bandwidths are not defined by standards, for example, a 55M bandwidth is not defined by standards. As shown in Figure 2 A TDD in-band discontinuous multi-segment discrete spectrum diagram is shown. In Figure 2 the same frequency band, there are two discontinuous 30M CCs under operator A, and a 30M CC under operator B in the middle of the two 30M CCs. How to maximize the use of frequency spectrum resources, maximize the performance of multi-carrier, and maximize the use of spectrum is a problem to be solved.

[0098] Currently, CA is a commonly used technology for integrating the use of multiple spectrum segments. According to the integrated use of spectrum, it can be divided into inter-band CA, in-band discontinuous CA, and in-band continuous CA. However, the current CA can only aggregate the standard cell bandwidth spectrum defined in 38101-1, such as 20M, 30M, …, 90M, and 100M. For the integration use of discrete spectrum in the same frequency band, the use of CA has a certain degree of limitation.

[0099] As described above, for the aggregation use of in-band spectrum, the CA technology mainly involves in-band continuous CA and in-band discontinuous CA. In-band continuous CA requires continuous spectrum, and two CCs meet the requirement of nominal channel spacing, which cannot solve the scenario of discrete spectrum in the same frequency band. In-band discontinuous CA can theoretically solve the scenario of discrete spectrum in the same frequency band. However, in-band discontinuous CA is limited to the spectrum combination defined in 38101-1, and cannot perform CA on the spectrum not defined by standards. Moreover, compared with in-band continuous CA, in-band discontinuous CA needs to double the radio frequency channels in TDD spectrum, which involves changing the radio frequency channels. For example, when two discontinuous CCs are integrated using CA technology, each CC corresponds to one radio frequency channel, and two radio frequency channels are needed to transmit data. Once the terminal device is shipped, it cannot support more frequency band combinations through OTA software upgrade in the future, and the flexibility of CA technology is poor.

[0100] ​In some scenarios, one technique used for discrete spectrum integration is a flexible multi-spectrum combination and flexible scheduling scheme that combines multiple discrete spectrum segments including the spectrum of non-operators in the middle into a continuous spectrum resource, configured as a virtual large bandwidth cell. The channel configuration is in the spectrum part of the operator. Through flexible uplink and downlink BWP configuration and RB scheduling scheme, the terminal device only uses the spectrum resource of the operator. For example, as shown in Figure 3 A schematic diagram of a flexible multi-spectrum combination and flexible scheduling scheme is shown. If the spectrum is an FDD spectrum, the downlink spectrum can be configured as a 40M virtual standard large bandwidth cell, and the terminal device is configured by RRC signaling to configure the downlink BWP as 40M, and the uplink BWP of the uplink spectrum is 15M. The uplink spectrum and the downlink spectrum are different. Through flexible scheduling, the 10M spectrum of the non-operator in the middle is not scheduled, and the terminal device can experience a downlink 30M available large bandwidth.

[0101] Specifically, Figure 3 The scheme shown can include the following flow, taking the network device as a base station and the terminal device as a UE as an example for illustration.

[0102] 1) The base station configures a large bandwidth cell, and the bandwidth of the cell includes multiple discrete spectrum segments in the same frequency band.

[0103] 2) The base station configures the synchronization signal block (SSB) and CORESET0, initial uplink / downlink (initial UL / DL) BWP, and other public control channels on one of the carriers.

[0104] 3) The UE initiates an access flow on the initial UL / DL BWP.

[0105] 4) The base station configures a large bandwidth dedicated carrier and BWP for the user, for example, the 40M large bandwidth cell of the downlink spectrum and the 15M bandwidth cell in the uplink spectrum, and the BWP is one of the two 15M downlink BWPs belonging to the operator in the large bandwidth cell and the 15M uplink BWP in the uplink spectrum.

[0106] 5) When transmitting data in the downlink, the base station allocates BWP to the user in real time according to the service demand in the large bandwidth cell, schedules RB resources, and performs user filtering processing to reduce interference.

[0107] 6) When transmitting data in the uplink, the base station performs real-time interference frequency band detection, dynamically schedules the uplink RB resources of the user in the uplink BWP according to the interference and the uplink data volume.

[0108] Thus, for discontinuous multiple spectrums in the same frequency band, a plurality of carriers can form a virtual continuous large bandwidth cell, and the discontinuous multiple spectrums can share one common control channel, and a base station integrated scheduler can determine and flexibly configure a user-specific carrier bandwidth and a BWP for a user in a virtual large bandwidth of the cell according to a carrier support capability of the UE, a physical resource block (PRB) utilization rate, and interference information.

[0109] In the aggregated virtual large bandwidth spectrum, the spectrum of the non-own operator is included, and thus there are four different directions of interference in the uplink and downlink data transmission between the base station and the UE.

[0110] As shown in FIG. 1, a virtual large bandwidth cell is formed by aggregating discontinuous spectrums in the same frequency band. Figure 4 FIG. 2 shows a schematic diagram of uplink and downlink interference of a discrete multi-spectrum virtual large bandwidth. For the downlink, there are interference in direction A and direction C. Direction A is the downlink interference of the base station of the virtual large bandwidth cell of the own operator to the UE of other operators, and direction C is the downlink interference of the base station of other operators to the UE in the virtual large bandwidth cell. For the uplink, there are interference in direction D and direction B. Direction D is the uplink interference of the UE in the virtual large bandwidth cell to the base station of other operators, and direction B is the uplink interference of the UE of other operators to the base station of the own operator of the virtual large bandwidth cell.

[0111] Generally, when the base station transmits in the downlink, a filter of a sub-bandwidth in the BWP can be added to the base station of the virtual large bandwidth cell to reduce the downlink interference in direction A. When the base station receives in the uplink, the uplink interference frequency band detection and identification capability can be increased, the interference frequency band can be identified according to the uplink RB granularity interference measurement, a filter can be added to eliminate the interference, or an interference avoidance scheduling process can be performed to reduce the interference in direction B. The base station can also perform interference measurement and flexibly adjust the position of the BWP to reduce the interference in direction C. However, for the interference in direction D, the base station cannot reduce the interference if it is applied in a TDD spectrum, which is limited by the following multiple principle factors.

[0112] 1) In a TDD system, the center frequencies of the uplink and downlink BWP must be the same according to the protocol, and thus the center frequency of the uplink BWP is near the center frequency of the virtual large bandwidth cell, and the center frequency can be in the frequency band of the non-own operator.

[0113] 2) The uplink local oscillator frequency (carrier leakage) of the UE is generally at the center RE of the uplink BWP, and the middle spectrum of the virtual large bandwidth belongs to other operators, and thus the local oscillator frequency cannot be reduced on the base station of the own operator. The uplink local oscillator interference can affect the demodulation performance of the base station of other operators.

[0114] 3) Considering UE compatibility and implementation complexity, the UE will not use multiple sets of filters within one BWP, and the general interference caused by uplink scheduling RBs to non-scheduling RBs will also exist.

[0115] Therefore, the present application provides a carrier aggregation method for TDD spectrum, realizes integration of discrete spectrum within the same frequency band, can solve the scenario of not supporting in-band discontinuous CA at the terminal device side, and solve the uplink and downlink interference problems in the above four directions. In the present application, in the case of discontinuous spectrum of multiple same operators, the configuration mode of the virtual large bandwidth can be changed. The present application is different from the mode of configuring one complete virtual standard bandwidth cell in the prior art. In the TDD scenario, the present application can divide the discontinuous spectrum of the same frequency band of the operator and the spectrum of the non-operator into two standard bandwidth cells / carriers supporting continuous CA, and the two cells / carriers can form in-band continuous CA, and each standard bandwidth cell includes a segment of effective spectrum. And the user's dedicated BWP can be flexibly configured to work in the spectrum available to the operator. And for the terminal device with CA capability, the downlink in-band continuous CA can be configured. In this way, if there are discontinuous multiple segments of the operator's spectrum, when the discontinuous multiple segments of the operator's spectrum are divided into two standard bandwidth carriers and the two standard bandwidth carriers are combined into downlink in-band continuous CA and configured to the terminal device, the downlink transmission efficiency can be improved.

[0116] In addition, the carrier configured after the terminal device is only used for downlink continuous CA transmission, so for the uplink, the uplink BWP is still the effective BWP of the operator in the first configured carrier, which can realize that the user's downlink reception enjoys the large bandwidth experience, and the uplink local oscillator frequency position of the terminal device is at the center RE of the BWP of the operator, which can eliminate the uplink interference influence of the operator terminal on the base station of other operators (D direction interference).

[0117] The embodiments of the present application are described below.

[0118] In the present application, the discrete TDD spectrum within a certain frequency band is integrated by using the virtual large bandwidth technology and the in-band continuous CA technology, which can be applied to the following multiple scenarios. For example, scenario one, the protocol does not specify in-band discontinuous CA of the frequency band; scenario two, the bandwidth of the two discrete spectrums is not in the CA frequency band combination; scenario three, at least one of the two discrete spectrums is not a standard NR cell bandwidth. The present application does not limit the applicable scenarios.

[0119] As Figure 5 Fig. 1 shows a flowchart of a carrier aggregation method provided by an embodiment of the present application, which includes the following processes.

[0120] 501、The terminal device receives first configuration information, and the first configuration information comprises a first channel bandwidth (CBW) and a first BWP of the terminal device in the first carrier. The first CBW is a bandwidth of the first carrier.

[0121] The terminal device receiving the first configuration information can comprise that the terminal device receives the first configuration information sent by the network device. Accordingly, the network device sends the first configuration information, that is, the network device sends the first configuration information to the terminal device.

[0122] The following takes the terminal device as UE and the network device as a base station as an example for illustration.

[0123] In some embodiments, the base station can split the whole spectrum into at least two parts according to the bandwidth combination of the in-band contiguous CA supported by the protocol, in combination with the multiple discrete spectrums needed to be integrated, and configure the whole spectrum as multiple standard bandwidth cells on the base station. It is assumed that the multiple standard bandwidth cells are two: a first cell and a second cell. Here, there are two possible splitting results of the whole spectrum:

[0124] 1) The first cell is a standard bandwidth cell (spectrum of the operator), and the second cell is a virtual standard large bandwidth cell (including the spectrum of the operator and the spectrum of the non-operator). When the first cell corresponds to the first carrier, the spectrum of the first carrier is the spectrum of the operator, and when the second cell corresponds to the second carrier, the second carrier includes the spectrum of the operator and the spectrum of the non-operator. Alternatively, the first cell is a virtual standard large bandwidth cell, and the second cell is a standard bandwidth cell. The first carrier includes the spectrum of the operator and the spectrum of the non-operator, and the spectrum of the second carrier is the spectrum of the operator. The carriers of the two cells are contiguous.

[0125] For example, reference can be made to Figure 6 The CA scenario shown in the schematic diagram. When the first cell is a virtual standard large bandwidth cell, the virtual standard large bandwidth is an in-band contiguous 60M combined with the spectrum of at least two operators, for example, including the spectrum of operator A and the spectrum of operator B. At this time, for any operator, the spectrum bandwidth of the operator in the first carrier is less than the bandwidth of the first carrier. When the second cell is a standard bandwidth cell, the bandwidth of the second carrier is 30M defined in the standard.

[0126] 2) The first cell and the second cell are both virtual standard large bandwidth cells.

[0127] That is, the first carrier includes the spectrum of at least two operators, and the second carrier also includes the spectrum of at least two operators. The spectrums of the first carrier and the second carrier are contiguous. For any operator, the spectrum bandwidth of the operator in the first carrier is less than the bandwidth of the first carrier, and the spectrum bandwidth of the operator in the second carrier is less than the bandwidth of the second carrier.

[0128] Among the configured first cell and second cell, two segments of valid spectrum of the same operator are discontinuous.

[0129] For example, if the UE selects to access the first cell according to the signal strength and the frequency point priority when selecting to camp on the cell, the initial uplink and downlink BWP of the first cell can be parsed according to the system message received from the common control channel of the first cell. Then, the base station access procedure of the first cell can be performed on the initial uplink and downlink BWP.

[0130] In some embodiments, in the case that the terminal device accesses the first cell on the initial uplink and downlink BWP, the terminal device can send the capability information of the terminal device to the network device, the capability information including the indication that the terminal device supports the in-band contiguous CA, and the carrier bandwidth supported by the terminal device. Accordingly, the network device receives the capability information sent by the terminal device.

[0131] If the carrier bandwidth supported by the terminal device includes the bandwidth of the first carrier, the terminal device can receive the first configuration information sent by the first carrier on the initial uplink and downlink BWP of the initial access of the first carrier. Accordingly, the network device sends the first configuration information to the terminal device on the first BWP. The first configuration information includes the first CBW and the first BWP of the terminal device on the first carrier. The first CBW is the bandwidth of the first carrier. At this time, the network device switches the initial uplink and downlink BWP of the terminal device accessing the first cell to the available BWP of the terminal device on the first carrier, i.e., the first BWP, which can include the resources of the initial uplink and downlink BWP.

[0132] If the first cell is a virtual standard large bandwidth cell, the first carrier includes the in-operator spectrum and the non-in-operator spectrum, the first CBW can be understood as the user-specific carrier bandwidth of the terminal device configured by the network device, and the user-specific carrier bandwidth is the bandwidth of the first carrier. The first BWP can be understood as the available BWP or the effective BWP of the terminal device on the in-operator spectrum in the first carrier.

[0133] If the first cell is a standard bandwidth cell, the first CBW configured for the terminal device is the bandwidth of the first carrier of the first cell, and the first CBW is the in-operator bandwidth of the terminal device, i.e., the bandwidth of the first carrier is the user-specific carrier bandwidth configured by the network device. The first BWP is the available BWP or the effective BWP in the first carrier.

[0134] Among them, the non-in-operator spectrum of the terminal device can be the spectrum allocated for use by other operators, or it can be an idle spectrum not allocated for use.

[0135] For example, assuming that the downlink in-band contiguous CA in this application is as follows Figure 6The illustrated CC1 and CC2, CC1 is a carrier corresponding to a virtual standard large bandwidth cell, and CC2 is a carrier corresponding to a standard bandwidth cell. The first cell can be cell 1 corresponding to CC1, or cell 2 corresponding to CC2. The bandwidth of CC1 is 60M, including 30M bandwidth of operator A and 30M bandwidth of operator B. The bandwidth of CC2 is 30M of operator A. If the operator of the UE is operator A, the UE selects the first carrier for initial access as CC1, and the first CBW of the UE on the first carrier is the carrier bandwidth of CC1, that is, 60M, and the first BWP can be 30M bandwidth of operator A in cell 1. If the first carrier for initial access of the UE is CC2, the first CBW of the UE on the first carrier is 30M of operator A in the cell of CC2, and the first BWP can be 30M bandwidth of operator A in cell 2 corresponding to CC2. That is, the available BWP / effective BWP of the UE on CC2 is the carrier bandwidth of the entire cell 2 of CC2.

[0136] Then, the terminal device and the network device can perform uplink and downlink communication on the first BWP.

[0137] Therefore, in some embodiments, after receiving the first configuration information, the terminal device transmits an uplink signal on the first BWP, and receives a downlink signal on the first BWP. Correspondingly, the network device transmits a downlink signal to the terminal device on the first BWP, and receives an uplink signal transmitted by the terminal device on the first BWP.

[0138] 502, the terminal device receives second configuration information, and the second configuration information includes a second CBW and a second BWP of the terminal device on a second carrier, the second CBW is the bandwidth of the second carrier, and the second carrier and the first carrier support combination as downlink intra-band contiguous CA.

[0139] In some embodiments, after the terminal device accesses the first cell, if the network device determines the carrier bandwidth supported by the terminal device, the terminal device supports intra-band contiguous CA, and there is a second carrier continuous with the first carrier in the same frequency band, the bandwidth of the second carrier is a standard bandwidth, the network device can configure an SCell to the terminal device. That is, the network device can transmit second configuration information to the terminal device on the first BWP. Correspondingly, the terminal device receives the second configuration information on the first BWP, the first cell initially accessed by the terminal device is a PCell, and the SCell to be configured is recorded as a second cell.

[0140] In some embodiments, the first carrier satisfies condition 1 below, or the second carrier satisfies condition 2 below, or the first carrier and the second carrier satisfy condition 1 and condition 2 below:

[0141] The condition 1 is that the first carrier includes the self-operator spectrum and the non-self-operator spectrum, and the first BWP is an available BWP on the self-operator spectrum in the first carrier.

[0142] The condition 2 is that the second carrier includes the self-operator spectrum and the non-self-operator spectrum, and the second BWP is an available BWP on the self-operator spectrum in the second carrier.

[0143] The second BWP is discontinuous with the spectrum of the first BWP.

[0144] That is, in the present application, in the case that the first carrier corresponds to the first cell and the second carrier corresponds to the second cell, at least one of the first cell and the second cell is a virtual standard large bandwidth cell including the self-operator spectrum and the non-self-operator spectrum.

[0145] When the network device configures the second cell to the terminal device, the network device can activate the second cell according to the service requirement of the terminal device. Therefore, in some embodiments, the method can further include: the terminal device receives an activation indication, the activation indication being used to activate the second carrier; and in the case that the second carrier is activated, the terminal device receives the downlink signal on the first carrier and the second carrier.

[0146] Therefore, in the case that the second carrier and the first carrier support the combination of the downlink in-band continuous CA, the bandwidth of the first carrier and the bandwidth of the second carrier are standard bandwidths, if the second carrier is activated, the network device can send the downlink data to the terminal device on the first carrier and the second carrier at the same time, and the terminal device can receive the downlink data sent by the network device on the first carrier and the second carrier at the same time.

[0147] Irrespective of whether the first cell is a virtual standard large bandwidth cell, the second cell is a standard bandwidth cell, or the first cell is a standard bandwidth cell, the second cell is a virtual large bandwidth cell, or the first cell and the second cell are both virtual standard large bandwidth cells, the configured second cell is used for the downlink transmission of the network device. When the network device sends the downlink data on the downlink in-band continuous CA, and the terminal device receives the downlink data on the downlink in-band continuous CA, the network device still only receives the uplink signal sent by the terminal device on the first BWP of the initially accessed first cell, and the terminal device sends the uplink signal on the first BWP.

[0148] For example, Figure 6As shown, if the first carrier is CC1, the second carrier here can be CC2. If the first carrier is CC2, the second carrier here can be CC1. That is, if the UE has a carrier bandwidth capability supporting CC1 and a carrier bandwidth capability supporting CC2, and the carrier of CC1 and the carrier of CC2 are continuous, the base station can combine CC1 and CC2 into downlink intra-band contiguous CA, for widening the bandwidth of the UE receiving downlink signals and improving the downlink transmission efficiency. If the initial access carrier is CC1, the base station still receives the uplink data sent by the UE on the first BWP of CC1.

[0149] In this way, in the TDD spectrum, when the first CBW configured for the terminal device is the bandwidth of the first carrier and the second CBW is the bandwidth of the second carrier, if the first carrier and the second carrier support downlink intra-band contiguous CA, after the first configuration information and the second configuration information are sent to the terminal device, the first carrier and the second carrier of the spectrum where the first BWP and the second BWP are located are combined into downlink intra-band contiguous CA. On the downlink intra-band contiguous CA, the first BWP and the second BWP are both the useful spectrum of the terminal device. In this way, even if the spectrum of the first BWP and the second BWP is discrete non-standard bandwidth spectrum of the operator, since the bandwidth of the first carrier and the second carrier is virtual standard bandwidth or standard bandwidth, the combination into downlink intra-band contiguous CA is supported, the first BWP and the second BWP can be jointly used, to effectively integrate the use of discrete spectrum in the TDD scenario, improve the use rate of the discrete spectrum, and improve the downlink throughput of the terminal device.

[0150] Moreover, for the uplink of the carrier combination, the downlink intra-band carrier aggregation does not affect the uplink BWP being the effective BWP of the operator, that is, the uplink of the terminal device works in a single carrier mode, the user can enjoy a large bandwidth experience, and the uplink local oscillator frequency position of the terminal device is at the center RE of the BWP of the operator, so that the uplink interference of the terminal of the operator to the base station of other operators can be eliminated.

[0151] As shown in the figure, an embodiment of the present application provides a flowchart of a carrier aggregation method, which includes the following processes. Figure 7 As shown in the figure, an embodiment of the present application provides a flowchart of a carrier aggregation method, which includes the following processes.

[0152] 701、The base station side configures at least one virtual large bandwidth cell, and the at least one virtual large bandwidth cell includes a first cell, the initial uplink and downlink BWP of the first cell is the effective bandwidth part of the first cell, and the configuration complies with the standard specification requirement.

[0153] The standard specification can be 3GPP.

[0154] For example, within the TDD spectrum, for the same operator, there may be multiple discontinuous spectrum segments within the same frequency band. Some spectrum segments may not be defined in the frequency band combination of CA (Contiguous Access Control), and the bandwidth of some spectrum segments may not be the standard NR cell bandwidth, or the in-band discontinuous CA may not be defined within the frequency band. This application can integrate multiple discontinuous spectrum segments in the TDD spectrum at the base station side, configure at least one virtual large bandwidth spectrum, and obtain at least one virtual large bandwidth cell, so that the same operator can use the virtual large bandwidth cell combination to form downlink in-band continuous CA. Here it is called a virtual large bandwidth cell because each virtual large bandwidth cell includes spectrum from the operator and spectrum from other operators. In some embodiments, a spectrum segment may be an effective bandwidth portion of one operator or an ineffective bandwidth portion of another operator. That is, a spectrum segment may belong to multiple virtual large bandwidth cells.

[0155] Taking at least one virtual large-bandwidth cell, including a first cell, as an example, when configuring the first cell, the carrier bandwidth and the initial available bandwidth portion of the first cell can be configured, i.e., the initial uplink and downlink bandwidth configurable for initial access to the first cell. The carrier bandwidth configuration of the first cell conforms to standard specifications. For example, the first cell is as follows: Figure 6 The cell corresponding to CC1, before CC1 is configured, contains spectrum 1 of operator A and spectrum 2 of operator B, and these two spectrums are contiguous. Considering that there is also spectrum 3 of operator A contiguous to spectrum 2 of operator B, if the bandwidth of spectrum 1 and spectrum 2 can be combined into a large bandwidth defined by the symbol standard, this application can combine spectrum 1 and spectrum 2 into a virtual large bandwidth carrier at the base station to obtain a virtual CC1, corresponding to the first cell. The initial uplink and downlink bandwidths (BWP) in CC1 are a portion of the resources in the effective spectrum of spectrum 1, i.e., the effective BWP when the terminal device accesses CC1. In this way, if continuous downlink CA is to be performed, when the spectrum of CC2 is spectrum 3, CA can be performed on CC1 and CC2. Thus, although nominally CC1 and CC2 are combined into continuous downlink CA, the actual bandwidth used is the effective BWP of CC1 and spectrum 3 of CC2.

[0156] In addition, when configuring the first cell, the center frequency and transmit / receive power of the first cell can also be configured. The center frequency of the first cell is located near the center frequency of the available bandwidth portion of the first cell. When configuring the effective bandwidth portion of the first cell, this can be achieved by configuring the start frequency position and the end frequency position.

[0157] 702. At least one virtual large bandwidth cell is configured on the base station side. The frequency domain position of all channels in each virtual large bandwidth cell is the effective bandwidth portion of the virtual large bandwidth cell, and the configuration follows the standard specification requirements.

[0158] In other words, based on the configuration of at least one virtual large-bandwidth cell, the base station can configure the frequency domain positions of all channels in the virtual large-bandwidth cell, such as SSB and CORESET0 resources, on the effective BWP of the virtual large-bandwidth cell. Thus, with... Figure 6 For example, when the base station is configured as CC1, it only uses the channels on the valid BWP to transmit uplink and downlink data to the UE of operator A in the first cell.

[0159] The configuration of resources such as SSB and CORESET0 on the base station side follows the requirements of standard specifications.

[0160] 703. When a UE accesses the network, it performs cell scanning and system message parsing on the common control channel to select the first cell to access.

[0161] For example, in an NR system, when a UE wants to access the network in connected / idle / active state, it can search for a Service Block (SSB) on the common control channel. From the SSB, it can parse the Master Information Block (MIB), and from the MIB, it can parse the location of the Demodulation Reference Signal (DMRS), the configuration of SIB1 in the Physical Downlink Control Channel (PDCCH), cell blocking indication (in SIB1 for 4G), and the common search space. Then, the UE can receive SIB1 according to its configuration, and from SIB1, it can parse the availability and scheduling information of other SIBs (such as the mapping of SIBs to system information (SI), periodicity, and SI window size), indicating whether to provide one or more SIBs only on demand, and under what circumstances the UE needs to execute an SI request. It also carries information for assessing whether the UE is allowed to access the cell, terminal-wide radio resource configuration, and restrictions required for unified access control (UAC).

[0162] For example, if the UE receives SSBs from multiple cells, and parses the signal strength access threshold and frequency priority of each cell, the UE can select an accessible cell based on the signal strength access threshold of each cell, and then select the cell with the highest frequency priority among the accessible cells. If it chooses to access the first cell, it can obtain the initial uplink / downlink BWP time-frequency domain resource information, PDCCH CORESET time-frequency domain resource information, PUCCH time-frequency domain resource information, and first carrier configuration information from the SIB1 received from the first cell.

[0163] 704、UE initiates an access procedure to access the first cell.

[0164] For example, the UE can initiate a 4-way handshake with the base station of the first cell on the initial uplink and downlink BWP according to the configuration of the initial uplink and downlink BWP obtained from the SIB1 of the first cell, perform the access procedure, and synchronize with the first cell in uplink to access the first cell.

[0165] Then, the base station can configure the RRC link between the first cell and the UE, including the configuration of the signal radio bearer (SRB) / data radio bearer (DRB), so as to establish the RRC link between the base station and the UE.

[0166] Subsequently, the base station can establish the initial context with the UE and the core network side to establish the UE's out-of-water context on the base station, including the packet data unit (PDU) session context, security key, mobile restriction list, UE radio capability and security capability, etc. In this way, the base station can perform uplink and downlink data transmission with the UE according to the initial context when there is subsequent data transmission.

[0167] At this time, the first cell here can be a virtual standard large bandwidth cell or a standard bandwidth cell.

[0168] 705、The UE reports the capability information to the base station, and the capability information includes an indication that the terminal device supports in-band continuous CA and a carrier bandwidth supported by the terminal device.

[0169] For example, after the UE completes the initial context establishment with the base station and the core network side, the UE can report the capability information to the base station on the initial uplink and downlink BWP of the first cell, including an indication of whether the terminal device supports in-band continuous CA, an indication of the carrier bandwidth supported by the terminal device, and band combination (BC) combination information.

[0170] 706、The base station sends first configuration information to the UE, and the first configuration information includes the first CBW and the first BWP of the terminal device on the first carrier, and the first CBW is the bandwidth of the first carrier.

[0171] After the base station obtains the capability information of the UE, the base station determines the bandwidth of the first carrier supported by the UE for access, and the base station can send the first configuration information to the user, and the first configuration information includes the user-specific carrier bandwidth of the UE on the first carrier and the available BWP of the UE.

[0172] The user-specific carrier bandwidth is denoted as a first CBW, and the first CBW is the bandwidth of the first carrier. The available BWP / effective BWP of the UE in the first carrier is denoted as a first BWP. The initial uplink / downlink BWP of the UE accessing the first cell can be part of the first BWP.

[0173] When the cell of the first carrier is the first cell, the first cell can be a virtual standard large bandwidth cell or a standard bandwidth cell.

[0174] For example, referring to Figure 6 If the first cell is a virtual standard large bandwidth cell, the first carrier is CC1, and the user-specific carrier bandwidth can be the virtual large bandwidth of CC1, i.e., the carrier bandwidth of CC1, for example, 60M, including 30M bandwidth of an operator A to which the UE belongs and 30M bandwidth of an operator B. The available BWP of the UE is the 30M bandwidth spectrum of the operator A in CC1. At this time, the cell CBW of the UE in CC1 is the bandwidth of the first carrier of the first cell, i.e., the virtual large bandwidth, and the bandwidth of the available BWP of the UE in the first carrier is the 30M bandwidth spectrum of the operator A in the first carrier.

[0175] For example, referring to Figure 6 If the first cell is a standard bandwidth cell, the first carrier is CC2, the operator of CC2 is the operator A to which the UE belongs, and the first CBW configured for the UE, i.e., the user-specific carrier bandwidth, can be the bandwidth of CC2, for example, 30M of the operator A in CC2. The available BWP of the UE is the 30M bandwidth spectrum of CC2. At this time, the bandwidth of the available BWP is the user-specific carrier bandwidth, or in other words, the bandwidth spectrum of the first BWP is the entire spectrum of the first carrier, or in other words, the available BWP of the UE is the entire spectrum of the cell CBW of the first cell.

[0176] In some embodiments, the sending, by the base station and to the UE, of the first configuration information can include: sending, by the base station and to the UE, RRC signaling including the first configuration information. Correspondingly, the UE receives the RRC signaling sent by the base station. The configuration of the first BWP includes the bandwidth size of the first BWP, the offset of the frequency domain position of the first BWP relative to the initial subcarrier position of the first carrier, and the subcarrier spacing of the first carrier.

[0177] 707、The base station sends second configuration information to the UE, and the second configuration information includes a second CBW and a second BWP of the terminal device in a second carrier. The second CBW is the bandwidth of the second carrier, and the second carrier and the first carrier support combination as downlink intra-band continuous CA.

[0178] In some embodiments, when the base station determines that the terminal device supports continuous CA within the downlink band, and there exists a second carrier that is continuous with the first carrier, the operator of the second carrier is operator A to which the UE belongs, and the carrier bandwidth supported by the UE includes the bandwidth of the second carrier, the base station can determine that the second carrier and the first carrier band support a combination that constitutes continuous CA within the downlink band. Therefore, when the available spectrum (available BWP) in the second carrier is not continuous with the available spectrum in the first carrier, in order to improve the downlink reception efficiency of the UE, the base station can configure a SCell, i.e., a second cell, for the UE, so that when there is a high bandwidth service requirement, the UE can receive the downlink signal of the first cell and the downlink signal of the second cell on the two available BWP segments of continuous CA within the downlink band.

[0179] Of course, before the base station sends the second configuration to the UE, the second carrier / cell needs to be measured. If the signal quality of the second carrier is good, the base station sends the second configuration information to the UE.

[0180] For example, the second cell could be a standard bandwidth cell or a virtual standard bandwidth cell. If the second cell is a standard bandwidth cell, for example... Figure 6 When the cell is CC2 as shown in cell 2, if CC1 and CC2 are combined into a continuous downlink CA, the UE can simultaneously receive downlink signals on the first BWP and the second BWP of CC2.

[0181] like Figure 8 The diagram illustrates two cells with consecutive CA (Cellular Access Control) within the downlink band that are virtual standard high-bandwidth cells. If both the first and second cells are virtual standard high-bandwidth cells configured at the base station, the scenario where CC1 and CC2 combine to form consecutive CA within the downlink band might be as follows: Figure 8 As shown in (a), before performing continuous downlink CA, with a standard bandwidth of 45MHz, the bandwidth of CC1 configured on the base station side is 45MHz. The spectrum of CC1 includes spectrum 1 (30MHz) of operator A and spectrum 2 (e.g., 15MHz) of operator B. The bandwidth of CC2 is 45MHz, and the spectrum of CC2 includes spectrum 3 (e.g., 15MHz) of operator B and spectrum 4 (30MHz) of operator A. When the UE's operator is operator A and the first carrier is CC1, the first BWP of CC1 is spectrum 1 of operator A, the second carrier can be CC2, and the second BWP of CC2 is spectrum 4 of operator A. The bandwidth of continuous downlink CA composed of CC1 and CC2 is 45MHz + 45MHz.

[0182] Alternatively, the scenario where CC1 and CC2 are combined to form a continuous CA within the downlink band might be as follows: Figure 8In (b) of FIG. 1, before the downlink intra-band contiguous CA is performed, in the case of a standard bandwidth including 45M, the bandwidth of the CC1 configured by the base station is 45M, the spectrum of the CC1 includes the spectrum 1 (e.g. 30M) of the operator A and the spectrum 2 (e.g. 15M) of the operator B, the bandwidth of the CC2 is 45M, and the spectrum of the CC2 includes the spectrum 3 (e.g. 15M) of the operator A and the spectrum 4 (e.g. 30M) of the operator B. In the case of the operator of the UE being the operator A and the first carrier being the CC1, the first BWP of the CC1 is the spectrum 1 of the operator A, and the second carrier can be the CC2, and the second BWP of the CC2 is the spectrum 3 of the operator A. The bandwidth of the downlink intra-band contiguous CA composed of the CC1 and the CC2 is 45M+45M.

[0183] 708、The UE sends an uplink signal to the base station on the first BWP and receives a downlink signal sent by the base station on the first BWP.

[0184] That is, the above downlink intra-band contiguous CA is performed to expand the bandwidth of the UE receiving the downlink signal. The UE initially accesses the first BWP in the first cell to perform uplink and downlink communication with the base station.

[0185] In this way, for the uplink of the UE, the effective BWP is still the first BWP in the first cell, the first BWP is used for uplink and downlink communication, the center frequency of the first BWP is at the center frequency position of the first BWP, and the local oscillator frequency is also at the center frequency position of the first BWP, which does not cause uplink D direction interference to the operator B.

[0186] 709、The UE receives an activation instruction for activating the second carrier.

[0187] For example, the base station determines that the current service of the UE is a data download service or a video playing service, etc., and the base station can instruct the UE to activate the second cell to send a downlink signal to the UE on the downlink contiguous CA.

[0188] 710、The UE receives a downlink signal on the first carrier and the second carrier in the case of activating the second carrier.

[0189] In this way, for the UE, the UE can activate the second carrier and the second BWP in the second carrier. When receiving the downlink signal, if the operator of the UE is the operator A, the UE receives not only the downlink signal of the operator A on the first BWP of the first carrier but also the downlink signal of the operator A on the second BWP of the second carrier.

[0190] However, when the UE activates the second carrier, the UE also receives the downlink signal of the non-operator A in the first cell on the downlink in-band contiguous CA if the first cell corresponding to the first carrier is a virtual standard large bandwidth cell. If the second cell is also a virtual standard large bandwidth cell, the UE also receives the downlink signal of the non-operator A in the second cell. In this way, the downlink signal of the non-operator A is an interference signal of the UE, and the interference signal can affect the UE in demodulating the received downlink signal of the operator A. Therefore, the UE needs to send the downlink channel quality to the base station in time, so that the base station determines whether to deactivate the second cell.

[0191] Therefore, in some embodiments, the method further comprises:

[0192] The UE sends a channel quality indication, and the channel quality indication is used to indicate the downlink channel quality of the terminal device in receiving the downlink signal on the downlink in-band contiguous CA; correspondingly, the base station receives the channel quality indication sent by the UE;

[0193] In the case that the downlink channel quality does not satisfy the channel quality threshold, the UE receives a deactivation indication, and the deactivation indication is used to indicate the terminal device to deactivate the second carrier; correspondingly, the base station sends the deactivation indication to the UE.

[0194] In the case that the second carrier is deactivated, the UE receives the downlink signal on the first BWP and sends the uplink signal on the first BWP. Correspondingly, the base station sends the downlink signal on the first BWP and receives the uplink signal on the first BWP.

[0195] Exemplarily, in the case that the first carrier is a virtual standard large bandwidth cell, the UE receives the downlink signal of the non-operator A in the first cell on the downlink in-band contiguous CA. Figure 6For example, in a TDD scenario, if CC2 is activated, CC1 and CC2 share one radio frequency channel on the downlink in-band continuous CA, when the UE receives the downlink data on the downlink in-band continuous CA, it will not only receive the downlink signals of the first BWP and the second BWP of the operator A, but also receive the downlink signals of the frequency band 2 of the operator B. The UE can periodically send a channel state information-reference signal (CSI-RS) report of the first cell to the base station, and the CSI-RS report includes a channel quality indication (CQI) of the first cell, which indicates the downlink channel quality of the UE receiving the downlink signal on the first cell. At the same time, the UE will also periodically send a CSI-RS report of the second cell to the base station, and the CSI-RS report includes a CQI of the second cell. If the operator of the UE is operator A on the downlink continuous CA, the UE receives the signal strength of operator B higher than that of operator A, and the difference in signal strength is large, which may cause the saturation of the signal amplifier in the radio frequency channel, causing the UE to block the reception of the downlink signal, that is, the UE receives the signal strength of the invalid frequency band higher than that of the valid BWP, which will affect the noise floor of the UE receiving the useful signals on the first BWP and the second BWP, and ultimately affect the demodulation performance of the UE on the useful signals on the first BWP and the second BWP, resulting in a poor signal-to-noise ratio and demodulation failure of the UE on the useful signals.

[0196] Therefore, in this case, the base station can send a deactivation indication to the UE, instructing the UE to deactivate the second carrier. When the UE receives the deactivation indication, it can return to the single carrier mode, that is, the UE only performs uplink and downlink transmission on the first BWP of the first carrier.

[0197] In some embodiments, after the base station deactivates the second carrier, it can also perform a reactivation hysteresis penalty, for example, if the UE's service still needs to perform downlink in-band continuous CA after a certain time of deactivation, the base station can send an activation indication to the UE again to activate the second carrier.

[0198] It should be noted that in the embodiments of the present application, the downlink in-band continuous CA is described by taking two CCs as an example, but the present application is not limited to using only two CCs for downlink in-band continuous CA, but also more than two CCs for downlink in-band continuous CA. Moreover, for each CC in the downlink in-band continuous CA, there can also be more than two operators' frequency spectrums on the CC, not limited to only two operators' frequency spectrums.

[0199] Thus, in the present application, if at least one of the first carrier and the second carrier comprises the in-service carrier frequency spectrum and the non-in-service carrier frequency spectrum of the terminal device, and the first carrier and the second carrier support the downlink intra-band contiguous CA, in the case that the standard stipulates that the spectrum bandwidth of the CA must be the standard spectrum bandwidth, one of the bandwidth of the first carrier and the bandwidth of the second carrier is a virtual standard bandwidth, and the other is a virtual standard bandwidth or a standard bandwidth.

[0200] In the present application, when the first CBW configured for the terminal device is the bandwidth of the first carrier, and the second CBW is the bandwidth of the second carrier, if the first carrier and the second carrier support the downlink intra-band contiguous CA, after the first configuration information and the second configuration information are sent to the terminal device, the first carrier and the second carrier of the spectrum where the first BWP and the second BWP are located are combined as the downlink intra-band contiguous CA, which are discontinuous. On the downlink intra-band contiguous CA, the first BWP and the second BWP are both the useful spectrum of the terminal device. In this way, even if the spectrum of the first BWP and the second BWP is the discrete non-standard bandwidth spectrum of the in-service carrier, since the bandwidth of the first carrier and the bandwidth of the second carrier are virtual standard bandwidth or standard bandwidth, the combination into the downlink intra-band contiguous CA is supported, and the first BWP and the second BWP can be jointly used, so as to effectively integrate the discrete spectrum in the TDD scenario, improve the use rate of the discrete spectrum, and improve the downlink throughput of the terminal device.

[0201] Moreover, in the intra-band contiguous CA scenario, the UE will multiplex the radio frequency channel of the PCell, without increasing the hardware cost of the terminal, and the support degree is relatively high. For the UE uplink, when the local oscillator frequency is at the center frequency position of the available BWP, the interference on the uplink signal of other operators can be reduced.

[0202] It can be understood that, in order to implement the functions in the above embodiments, the base station and the terminal (for example, the UE) comprise the corresponding hardware structure and / or software module for implementing each function. It should be easily realized by those skilled in the art that, in combination with the units and method steps of each example described in the embodiments disclosed in the present application, the present application can be realized in the form of hardware or a combination of hardware and computer software. Whether a certain function is implemented in hardware or computer software driven hardware depends on the specific application scenario and design constraints of the technical solution.

[0203] Figure 9 and Figure 10 The structural schematic diagram of a possible communication apparatus provided in the embodiments of the present application is shown. The communication apparatus can be used to implement the functions of the terminal or the base station in the above method embodiments, and thus can also achieve the beneficial effects possessed by the above method embodiments. In the embodiments of the present application, the communication apparatus can be the terminal 120 as shown in Figure 1 , or the base station 110 as shown in Figure 1The base station 110 shown can also be a module (such as a chip) applied to a terminal or a base station.

[0204] As shown in Figure 9 , the communication apparatus 900 includes a processing unit 910 and a transceiver unit 920. The communication apparatus 900 is configured to implement the functions of a terminal or a base station in the method embodiments shown in the above Figure 5 and / or Figure 7 .

[0205] When the communication apparatus 900 is configured to implement the functions of a terminal in the method embodiments shown in the above Figure 5 and / or Figure 7 , the transceiver unit 920 is configured to receive the first configuration information and the second configuration information, and the processing unit 910 is configured to process the first configuration information and the second configuration information. The processing unit 910 can also be configured to determine the CBW and the available BWP of the terminal in the first carrier, and the CBW and the available BWP of the terminal in the second carrier. The first carrier can include the in-own-operator spectrum and the non-in-own-operator spectrum, and / or, the second carrier can include the in-own-operator spectrum and the non-in-own-operator spectrum.

[0206] When the communication apparatus 900 is configured to implement the functions of a base station in the method embodiments shown in the above Figure 5 and / or Figure 7 , the transceiver unit 920 is configured to transmit the first configuration information and the second configuration information, and the processing unit 910 is configured to generate the first configuration information and the second configuration information.

[0207] For more detailed description of the processing unit 910 and the transceiver unit 920, please refer to the relevant description in the method embodiments shown in the above Figure 5 and / or Figure 7 .

[0208] As shown in Figure 10 , the communication apparatus 1000 includes a processor 1010 and an interface circuit 1020. The processor 1010 and the interface circuit 1020 are coupled with each other. It can be understood that the interface circuit 1020 can be a transceiver or an input / output interface. Optionally, the communication apparatus 1000 can also include a memory 1030, configured to store instructions executed by the processor 1010 or store input data required by the processor 1010 to execute instructions or store data generated after the processor 1010 executes instructions.

[0209] When the communication apparatus 1000 is configured to implement the method shown in the above Figure 5 and / or Figure 7 , the processor 1010 is configured to implement the functions of the processing unit 910, and the interface circuit 1020 is configured to implement the functions of the transceiver unit 920.

[0210] When the communication device is a chip applied to a terminal, the terminal chip implements the functions of the terminal in the method embodiments. The terminal chip receives information from the base station, which can be understood as the information being received by other modules (such as a radio frequency module or an antenna) in the terminal first, and then being sent to the terminal chip by the modules. The terminal chip sends information to the base station, which can be understood as the information being sent to other modules (such as a radio frequency module or an antenna) in the terminal first, and then being sent to the base station by the modules.

[0211] When the communication device is a chip applied to a base station, the base station chip implements the functions of the base station in the method embodiments. The base station chip receives information from the terminal, which can be understood as the information being received by other modules (such as a radio frequency module or an antenna) in the base station first, and then being sent to the base station chip by the modules. The base station chip sends information to the terminal, which can be understood as the information being sent to other modules (such as a radio frequency module or an antenna) in the base station first, and then being sent to the terminal by the modules.

[0212] In this application, entity A sending information to entity B can be A sending directly to B, or A sending indirectly to B through other entities. Similarly, entity B receiving information from entity A can be entity B receiving the information sent by entity A directly, or entity B receiving the information sent by entity A indirectly through other entities. Here, entity A and B can be RAN nodes or terminals, or modules inside RAN nodes or terminals. The sending and receiving of information can be the information interaction between RAN nodes and terminals, for example, the information interaction between a base station and a terminal; the sending and receiving of information can also be the information interaction between two RAN nodes, for example, the information interaction between a CU and a DU; the sending and receiving of information can also be the information interaction between different modules inside one device, for example, the information interaction between a terminal chip and other modules in the terminal, or the information interaction between a base station chip and other modules in the base station.

[0213] It can be understood that the processor in the embodiments of the present application can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. The general-purpose processor can be a microprocessor, or any conventional processor.

[0214] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions executable by a processor. The software instructions can be composed of corresponding software modules, which can be stored in a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, a register, a hard disk, a mobile hard disk, a CD-ROM, or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a base station or a terminal. The processor and the storage medium can also exist as discrete components in the base station or the terminal.

[0215] In the above embodiments, the implementation can be entirely or partially achieved by software, hardware, firmware, or any combination thereof. When implemented by software, the implementation can be entirely or partially in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer programs or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are entirely or partially performed. The computer can be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or other programmable devices. The computer programs or instructions can be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another, for example, the computer programs or instructions can be transferred from one website, computer, server, or data center to another by wired or wireless means. The computer-readable storage medium can be any available medium accessible by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be a magnetic medium, such as a floppy disk, a hard disk, a magnetic tape; an optical medium, such as a digital video disc; and a semiconductor medium, such as a solid-state disk. The computer-readable storage medium can be a volatile or non-volatile storage medium, or can include both volatile and non-volatile storage media.

[0216] In various embodiments of the present application, the terms and / or descriptions of different embodiments are consistent and can be mutually referred to if there is no special description and no logical conflict. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0217] In the present application, "at least one" means one or more, "multiple" means two or more. The "and / or" describes the association relationship of the associated objects, which means that there can be three kinds of relationships, for example, A and / or B can represent: A exists alone, A and B exist together, B exists alone, where A, B can be singular or plural. In the text description of the present application, the character " / ", generally indicates that the front and rear associated objects are in an "or" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0218] It can be understood that various numerical numbers involved in the embodiments of the present application are only distinguished for the convenience of description, and are not used to limit the scope of the embodiments of the present application. The size of the serial number of the above processes does not mean the order of execution, and the execution order of the processes should be determined according to its function and inherent logic.

Claims

1. A carrier aggregation method, characterized by, The method comprises: sending first configuration information, the first configuration information comprising a first channel bandwidth CBW and a first bandwidth part BWP of a terminal device in a first carrier, the first CBW being a bandwidth of the first carrier; sending second configuration information, the second configuration information comprising a second CBW and a second BWP of the terminal device in a second carrier, the second CBW being a bandwidth of the second carrier; the first BWP and the second BWP being discontinuous in spectrum, the second carrier and the first carrier supporting combination into a downlink intra-band contiguous carrier aggregation CA; wherein the first carrier satisfies condition 1 below, or the second carrier satisfies condition 2 below, or the first carrier and the second carrier satisfy condition 1 and condition 2 below: the condition 1 is that the first carrier comprises an in-operator spectrum and a non-in-operator spectrum, and the first BWP is an available BWP on the in-operator spectrum in the first carrier; the condition 2 is that the second carrier comprises an in-operator spectrum and a non-in-operator spectrum, and the second BWP is an available BWP on the in-operator spectrum in the second carrier.

2. The method of claim 1, wherein, The sending of the first configuration information comprises: in a case where the terminal device initially accesses the first carrier, sending the first configuration information to the terminal device on an initial BWP of the first carrier.

3. The method according to claim 1 or 2, characterized in that, The method further comprises: sending a downlink signal to the terminal device on the first BWP, and receiving an uplink signal sent by the terminal device on the first BWP.

4. The method according to any one of claims 1 to 3, characterized in that, Before sending the first configuration information, the method further comprises: receiving capability information sent by the terminal device, the capability information comprising an indication that the terminal device supports intra-band contiguous CA, and a carrier bandwidth supported by the terminal device.

5. The method according to any one of claims 1 to 4, characterized in that, The sending of the second configuration information comprises: sending the second configuration information to the terminal device on the first BWP.

6. The method according to any one of claims 1 to 5, characterized in that, The method further comprises: sending an activation indication to the terminal device, the activation indication being used to activate the second carrier; sending a downlink signal to the terminal device on the first carrier and the second carrier.

7. The method of claim 6, wherein, The method further comprises: receiving a channel quality indication sent by the terminal device, the channel quality indication being used to indicate a downlink channel quality of the terminal device in receiving a downlink signal on the downlink intra-band contiguous CA; in a case where the downlink channel quality does not satisfy a channel quality threshold, sending a deactivation indication, the deactivation indication being used to instruct the terminal device to deactivate the second carrier; sending a downlink signal to the terminal device on the first BWP, and receiving an uplink signal sent by the terminal device on the first BWP.

8. A carrier aggregation method, comprising: comprises: receiving first configuration information, the first configuration information comprising a first channel bandwidth CBW and a first bandwidth part BWP of a terminal device in a first carrier, the first CBW being a bandwidth of the first carrier; receive second configuration information, the second configuration information comprising a second channel bandwidth (CBW) and a second bandwidth part (BWP) of the terminal device on a second carrier, the second CBW being a bandwidth of the second carrier; the first BWP and the second BWP being discontinuous in frequency spectrum, the second carrier and the first carrier supporting combination into downlink intra-band contiguous carrier aggregation (CA); wherein the first carrier satisfies a condition 1, or the second carrier satisfies a condition 2, or the first carrier and the second carrier satisfy the condition 1 and the condition 2: the condition 1 is that the first carrier comprises in-operator spectrum and non-in-operator spectrum, and the first BWP is an available BWP on the in-operator spectrum in the first carrier; the condition 2 is that the second carrier comprises in-operator spectrum and non-in-operator spectrum, and the second BWP is an available BWP on the in-operator spectrum in the second carrier.

9. The method of claim 8, wherein, The receiving first configuration information comprises: in a case of initial access to the first carrier, receiving the first configuration information on an initial uplink-downlink BWP of the first carrier.

10. The method according to claim 8 or 9, characterized in that, The method further comprises: sending an uplink signal on the first BWP, and receiving a downlink signal on the first BWP.

11. The method according to any one of claims 8-10, characterized in that, Before receiving the first configuration information, the method further comprises: sending capability information of the terminal device, the capability information comprising an indication that the terminal device supports intra-band contiguous CA, and carrier bandwidths supported by the terminal device.

12. The method according to any one of claims 8-11, characterized in that, The receiving second configuration information comprises: receiving the second configuration information on the first BWP.

13. The method according to any one of claims 8-12, characterized in that, The method further comprises: receiving an activation indication for activating the second carrier; in a case of activating the second carrier, receiving a downlink signal on the first carrier and the second carrier.

14. The method of claim 13, wherein, The method further comprises: sending a channel quality indication for indicating a downlink channel quality of the terminal device receiving a downlink signal on the downlink intra-band contiguous CA; in a case that the downlink channel quality does not satisfy a channel quality threshold, receiving a deactivation indication for indicating the terminal device to deactivate the second carrier; in a case of deactivating the second carrier, receiving a downlink signal on the first BWP, and sending an uplink signal on the first BWP.

15. A communications device, characterized by comprise: a sending unit configured to send first configuration information, the first configuration information comprising a first channel bandwidth (CBW) and a first bandwidth part (BWP) of a terminal device on a first carrier, the first CBW being a bandwidth of the first carrier; a sending unit configured to send second configuration information, the second configuration information comprising a second CBW and a second BWP of the terminal device on a second carrier, the second CBW being a bandwidth of the second carrier; the first BWP and the second BWP being discontinuous in frequency spectrum, the second carrier and the first carrier supporting combination into downlink intra-band contiguous carrier aggregation (CA); The first carrier satisfies the following condition 1, or the second carrier satisfies the following condition 2, or the first carrier and the second carrier satisfy the following condition 1 and condition 2: The condition 1 is that the first carrier includes an in-operator spectrum and a non-in-operator spectrum, and the first BWP is an available BWP on the in-operator spectrum in the first carrier; The condition 2 is that the second carrier includes an in-operator spectrum and a non-in-operator spectrum, and the second BWP is an available BWP on the in-operator spectrum in the second carrier.

16. The communication apparatus according to claim 15, wherein The sending unit is used for: In the case that the terminal device initially accesses the first carrier, sending the first configuration information to the terminal device on an initial uplink first BWP of the first carrier.

17. The communication apparatus according to claim 15 or 16, wherein, The sending unit is also used for sending a downlink signal to the terminal device on the first BWP. The receiving unit is used for receiving an uplink signal sent by the terminal device on the first BWP.

18. The communication apparatus according to any one of claims 15-17, wherein, The receiving unit is used for: Before sending the first configuration information, receiving capability information sent by the terminal device, the capability information including an indication that the terminal device supports in-band continuous CA, and a carrier bandwidth supported by the terminal device.

19. The communication apparatus according to any one of claims 15-18, wherein, The sending unit is used for: Sending the second configuration information to the terminal device on the first BWP.

20. The communication apparatus according to any one of claims 15-19, wherein, The sending unit is also used for: Sending an activation indication, the activation indication being used for activating the second carrier; Sending a downlink signal to the terminal device on the first carrier and the second carrier.

21. The communication apparatus according to claim 20, wherein, The receiving unit is used for receiving a channel quality indication sent by the terminal device, the channel quality indication being used for indicating a downlink channel quality of the terminal device in receiving a downlink signal on the downlink in-band continuous CA; The sending unit is also used for sending a deactivation indication in the case that the downlink channel quality does not satisfy a channel quality threshold, the deactivation indication being used for instructing the terminal device to deactivate the second carrier; The sending unit is also used for sending a downlink signal to the terminal device on the first BWP, and the receiving unit is also used for receiving an uplink signal sent by the terminal device on the first BWP.

22. A communications device, characterized by It includes: The receiving unit is used for receiving first configuration information, the first configuration information including a first channel bandwidth CBW and a first bandwidth part BWP of a terminal device on a first carrier, the first CBW being a bandwidth of the first carrier; The receiving unit is also used for receiving second configuration information, the second configuration information including a second CBW and a second BWP of the terminal device on a second carrier, the second CBW being a bandwidth of the second carrier; the frequency spectrum of the first BWP and the second BWP is discontinuous, and the second carrier and the first carrier support combination as a downlink in-band continuous carrier aggregation CA; The first carrier satisfies the following condition 1, or the second carrier satisfies the following condition 2, or the first carrier and the second carrier satisfy the following condition 1 and condition 2: The condition 1 is that the first carrier includes an in-operator spectrum and a non-in-operator spectrum, and the first BWP is an available BWP on the in-operator spectrum in the first carrier. The condition 2 is that the second carrier includes an in-operator spectrum and a non-in-operator spectrum, and the second BWP is an available BWP on the in-operator spectrum in the second carrier.

23. The communication apparatus according to claim 22, wherein, The receiving unit is configured to: In the case of initial access to the first carrier, receive the first configuration information on an initial uplink-downlink BWP of the first carrier.

24. The communication apparatus according to claim 22 or 23, wherein, The receiving unit is further configured to receive downlink signals on the first BWP. The receiving unit is further configured to receive the second configuration information on the first BWP.

25. The communication apparatus according to any one of claims 22-24, wherein, The receiving unit is further configured to: Before receiving the first configuration information, send capability information of the terminal device, the capability information including an indication that the terminal device supports in-band contiguous CA.

26. The communication apparatus according to any one of claims 22-25, wherein, The receiving unit is further configured to: Receive the second configuration information on the first BWP.

27. The communication apparatus according to any one of claims 22-26, wherein, The receiving unit is further configured to: Receive an activation indication, the activation indication being used to activate the second carrier; In the case of activating the second carrier, receive downlink signals on the first carrier and the second carrier.

28. The communication apparatus according to claim 27, wherein The receiving unit is further configured to receive a channel quality indication, the channel quality indication being used to indicate a downlink channel quality of the terminal device in receiving downlink signals on the downlink in-band contiguous CA; In the case that the downlink channel quality does not satisfy a channel quality threshold, the receiving unit is further configured to receive a deactivation indication, the deactivation indication being used to instruct the terminal device to deactivate the second carrier; In the case of deactivating the second carrier, the receiving unit is further configured to receive downlink signals on the first BWP, and the sending unit is configured to send uplink signals on the first BWP.

29. A computer-readable storage medium, characterized in that, The computer instructions, when executed on the electronic device, cause the electronic device to perform the method of any one of claims 1-14.

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