Method, apparatus, and computer program for wireless communication

Abstract

Embodiments of the application relate to methods, apparatus, and computer programs for wireless communication. An apparatus comprises means for performing: connecting with a primary cell and one or more secondary cells; transitioning the apparatus from a first carrier aggregation combination to a second carrier aggregation combination, wherein in the second carrier aggregation combination, a carrier switching pattern is utilized between a first carrier and a second carrier, and a third carrier remains available in a contiguous manner, wherein an interruption behavior on the third carrier is based on one or more capabilities of the apparatus, the interruption behavior relating to data interruption of the apparatus on the third carrier; transmitting an indication of the interruption behavior associated with the combination of the first carrier, the second carrier, and the third carrier.

Description

Technical Field

[0001] Various examples of this disclosure relate to methods, apparatuses, systems, and computer programs for wireless communication, and specifically, but not exclusively, to utilization by telecommunications operators. Background Technology

[0002] A communication network can be viewed as a facility that enables communication between two or more communication devices or provides communication devices with access to a data network. Mobile or wireless communication networks are an example of communication networks. Communication devices may be served by application servers.

[0003] Such communication networks operate according to standards provided by organizations such as 3GPP (3rd Generation Partnership Project) or ETSI (European Telecommunications Standards Institute). Examples of standards provided by 3GPP include so-called 3GPP standards for cellular technology generations, such as the 3GPP standards for 4G technology and the 3GPP standards for 5G technology. Summary of the Invention

[0004] Examples of aspects described herein are provided. These aspects are not intended to indicate key or essential features of the various examples of this disclosure, nor are they intended to limit its scope. Other features, aspects, and elements will be apparent to those skilled in the art in light of this disclosure. For example, it should be understood that additional aspects may be provided by combination of any two or more aspects described below.

[0005] According to a first aspect, an apparatus is provided, the apparatus comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: connect to a primary cell and one or more secondary cells; switch the apparatus from a first carrier aggregation combination to a second carrier aggregation combination, wherein in the second carrier aggregation combination, a carrier switching mode is utilized between the first and second carriers while a third carrier remains continuously available, wherein interruption behavior on the third carrier is based on one or more capabilities of the apparatus relating to data interruption on the third carrier; and transmit an indication of interruption behavior associated with the combination of the first, second, and third carriers.

[0006] According to a second aspect, an apparatus is provided, comprising components for performing the following operations: connecting to a primary cell and one or more secondary cells; switching the apparatus from a first carrier aggregation combination to a second carrier aggregation combination, wherein in the second carrier aggregation combination, a carrier switching mode is utilized between the first and second carriers while a third carrier remains continuously available, wherein interruption behavior on the third carrier is based on one or more capabilities of the apparatus relating to data interruption on the third carrier; and transmitting an indication of interruption behavior associated with the combination of the first, second, and third carriers.

[0007] According to a third aspect, an apparatus is provided, comprising: a connection circuit system for connecting to a primary cell and one or more secondary cells; a switching circuit system for switching the apparatus from a first carrier aggregation combination to a second carrier aggregation combination, wherein in the second carrier aggregation combination, a carrier switching mode is utilized between the first and second carriers while a third carrier remains available in a continuous manner, wherein an interruption behavior on the third carrier is based on one or more capabilities of the apparatus relating to a data interruption of the apparatus on the third carrier; and a transmission circuit system for transmitting an indication of an interruption behavior associated with a combination of the first, second, and third carriers.

[0008] According to a fourth aspect, a method is provided, comprising: connecting to a primary cell and one or more secondary cells; switching a device from a first carrier aggregation combination to a second carrier aggregation combination, wherein in the second carrier aggregation combination, a carrier switching mode is utilized between the first and second carriers while a third carrier remains available in a continuous manner, wherein an interruption behavior on the third carrier is based on one or more capabilities of the device, the interruption behavior being related to a data interruption of the device on the third carrier; and transmitting an indication of an interruption behavior associated with a combination of the first, second, and third carriers.

[0009] According to a fifth aspect, a computer program including instructions is provided that, when executed by a device, causes the device to perform at least the following operations: connect to a primary cell and one or more secondary cells; switch the device from a first carrier aggregation combination to a second carrier aggregation combination, wherein in the second carrier aggregation combination, a carrier switching mode is utilized between the first and second carriers, while a third carrier remains available in a continuous manner, wherein interruption behavior on the third carrier is based on one or more capabilities of the device, the interruption behavior relating to data interruption on the third carrier; and send an indication of interruption behavior associated with the combination of the first, second, and third carriers.

[0010] According to a sixth aspect, a non-transitory computer-readable medium is provided comprising instructions that, when executed by a device, cause the device to perform at least the following operations: connect to a primary cell and one or more secondary cells; switch the device from a first carrier aggregation combination to a second carrier aggregation combination, wherein in the second carrier aggregation combination, a carrier switching mode is utilized between the first and second carriers, while a third carrier remains available in a continuous manner, wherein interruption behavior on the third carrier is based on one or more capabilities of the device relating to data interruption on the third carrier; and transmit an indication of interruption behavior associated with the combination of the first, second, and third carriers.

[0011] Based on some examples, additional features are provided according to the following statements. It should be understood that each of these statements can be applied to any of the first through sixth aspects provided above.

[0012] The interruption indication is reported by the device to the network.

[0013] Interruptions can be caused by internal interference or disruption at the device due to switching modes.

[0014] The first and second carriers include low-frequency band carriers.

[0015] The third carrier includes any of the following: low-frequency band carrier; mid-frequency band carrier; high-frequency band carrier; ultra-high-frequency band carrier.

[0016] The device is also configured to execute an instruction to receive a third carrier from the network, and the third carrier does not experience a data interruption based on the device having indicated that the operation through the first carrier, the second carrier, and the third carrier does not require interruption, or the third carrier experiences a data interruption based on the device having indicated that the operation through the first carrier, the second carrier, and the third carrier requires interruption.

[0017] The device's capabilities include information on at least one frequency band combination, which comprises at least two carriers operating in a switching state and at least one carrier operating in a continuous state.

[0018] At least one frequency band combination includes information on which carriers operating in a continuous state experience data interruptions caused by switching between a first carrier and a second carrier.

[0019] The device includes user equipment.

[0020] Many different aspects have been described above. As previously stated, it should be understood that additional aspects can be provided through any combination of two or more of the aforementioned aspects. Other features, aspects, and elements will become apparent from the following. Attached Figure Description

[0021] Some examples will now be described with reference to the accompanying drawings, by way of non-limiting and illustrative means, in which: Figure 1 An example of a communication network to which the examples disclosed herein can be applied is shown; Figure 2 This is a schematic block diagram illustrating user equipment, communication network, and data network according to an example implementation. Figure 3 A typical multi-band scenario is illustrated schematically; Figure 4 The illustration schematically shows secondary cell deactivation schemes in different regions of a multi-band scenario based on some examples; Figure 5 The concept of mode switching depending on cell distance is illustrated schematically based on some examples; Figure 6 The illustrations illustrate cell configuration strategies based on some examples; Figure 7 The diagram illustrates carrier interruptions based on four example scenarios; Figure 8 The signaling diagrams are illustrated schematically based on some examples; Figures 9 to 11 This is a schematic diagram illustrating the method flowcharts for some methods based on some examples; Figure 12 Some features of a telecommunications device, based on a few examples, are illustrated schematically. Detailed Implementation

[0022] Some examples of this disclosure can be implemented in communication networks such as any of the following radio access technologies (RATs): Global Microwave Access Interoperability (WiMAX), Global System for Mobile Communications (GSM, 2G), GSM EDGE Radio Access Network (GERAN), General Packet Radio Service (GRPS), Universal Mobile Telecommunications System based on Basic Wideband Code Division Multiple Access (W-CDMA) (UMTS, 3G), High-Speed ​​Packet Access (HSPA), Long Term Evolution (LTE), Advanced LTE and Enhanced LTE (eLTE), 5G (also known as NR), or any future RAT (such as 6G). Furthermore, communication within the communication network can utilize any suitable wireless communication technology, including but not limited to: Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Frequency Division Duplex (FDD), Time Division Duplex (TDD), Multiple-Input Multiple-Output (MIMO), Orthogonal Frequency Division Multiplexing (OFDM), and / or Discrete Fourier Transform Extended OFDM (DFT-s-OFDM).

[0023] As used herein, the term "network device" or "network node" can refer to a node in a communication network through which user equipment can access the network and / or control radio communications and manage radio resources within a cell. A network node or network device can be referred to as a base station (BS), access point (AP), or access node. Depending on the technology applied, a network device can be, for example, a Node B (NodeB or NB), an evolved Node B (eNodeB or eNB), an NR NB (also known as a gNB), a Remote Radio Unit (RRU), a Radio Head (RH), a Remote Radio Head (RRH), a repeater, an Integrated Access and Backhaul (IAB) node, a low-power node, a non-terrestrial network (NTN), or non-terrestrial network equipment such as satellite network equipment, low Earth orbit (LEO) satellites and geostationary Earth orbit (GEO) satellites, or spacecraft network equipment.

[0024] The term "terminal device" can refer to any terminal device capable of wireless communication. For example, a terminal device can be referred to as a communication device, user equipment (UE), subscriber station (SS), or mobile station (MS). Terminal devices can include mobile phones, cellular phones, smartphones, VoIP phones, wireless local loop phones, tablets, wearable terminal devices, personal digital assistants (PDAs), portable computers, desktop computers, image capture terminal devices (such as digital cameras), gaming terminal devices, music storage and recycle bins, in-vehicle wireless terminal devices, USB dongles, Internet of Things (IoT) devices, watches or other wearable devices, head-mounted displays (HMDs), vehicles, drones, medical devices and applications (e.g., remote surgery), industrial devices and applications (e.g., robots and / or other wireless devices operating in the context of industrial and / or automated processing chains), consumer electronics devices, devices operating on commercial and / or industrial wireless networks, and so on.

[0025] As used herein, the term "resource" can refer to radio resources in the time domain, frequency domain, spatial domain, and / or code domain. Some examples of resources include, for example, physical resource blocks (PRBs), radio frames, subframes, time slots, subbands, frequency regions, subcarriers, beams, etc. The terms "transmit" and / or "receive" can refer to wirelessly transmitting and / or receiving on radio resources via a radio propagation channel.

[0026] Figure 1 An example of a communication network that can implement the examples disclosed herein is shown. The communication network, or cellular communication network, may include a network node 110 providing one or more cells (such as cell 100) and a network node 112 providing one or more other cells (such as cell 102). For example, each cell may be a macrocell, microcell, femtocell, or picocell. A cell may define the coverage area or service area of ​​a corresponding access node.

[0027] Network node 110 can provide radio access to a communication network to user equipment (UE) 120 (one or more UEs). Radio access may include downlink (DL) communication from the network node to UE 120 and uplink (UL) communication from UE 120 to the network node. Examples of uplink channels include a Physical Uplink Control Channel (PUCCH) for transmitting control information and a Physical Uplink Shared Channel (PUSCH) for transmitting data to the network. Examples of downlink channels include a Physical Downlink Control Channel (PDCCH) for transmitting control information and a Physical Downlink Shared Channel (PDSCH) for transmitting data to the user equipment.

[0028] The system can have multiple UEs 120 and 122. Each UE can be served by the same or different network nodes 110 and 112. UEs can be configured with dual connectivity (DC), where a UE (e.g., UE 120) can connect to multiple network nodes 110 and 112. UEs 120 and 122 can communicate with each other if a device-to-device (D2D) communication interface is established between them via a so-called side link (SL). For example, such D2D communication can be referred to as machine-to-machine, peer-to-peer (P2P) communication, or vehicle-to-vehicle (V2V) communication.

[0029] In the case of multiple network nodes in a communication network, the network nodes can connect to each other via an interface. The LTE specification calls this interface the X2 interface. The interface between an LTE node and a 5G node, or between two 5G nodes, can be called the Xn interface. Network nodes 110 and 112 can also connect to the core network 116 of the communication network via another interface.

[0030] In the following explanations, various examples are illustrated with reference to communication devices capable of communicating with a communication system. Before explaining the various examples of this disclosure in detail, refer to… Figure 2 Briefly explain the fifth-generation communication system (5GS), the access network and its core network (5GC), and communication equipment.

[0031] Figure 2 A schematic representation of a communication system is shown. (Reference) Figure 2The illustration shows a user equipment (UE) 200 communicating with an application server (not shown) of a third-party application function (not shown) via a communication network and a managed data network 202. The communication network includes a radio access network 206 (e.g., a next-generation radio access network (NG-RAN)) and a core network 208 (e.g., a 5G core network (5GC) operating based on, for example, fifth-generation radio access technology described in the 3rd Generation Partnership Project (3GPP) standard for new radios). The core network 208 includes network functions (generally referred to as network functions, and collectively as network functions) that can be connected to a management system configured to manage the communication network, as described in further detail below.

[0032] Radio access network 206 includes one or more radio access network (RAN) nodes (also called base stations). RAN nodes can provide one or more cells. Cells can be, for example, macro cells, micro cells, femtocells, or picocells. A cell defines the coverage area or service area of ​​a RAN node. RAN nodes can be, for example, Node Bs (NodeBs or NBs), evolved Node Bs (eNodeBs or eNBs), next-generation Node Bs (gNBs), remote radio units (RRUs), remote radio heads (RRHs), repeaters, integrated access and backhaul (IAB) nodes, and low-power nodes. RAN nodes can be deployed in non-terrestrial network (NTN) equipment, such as satellites (e.g., low Earth orbit (LEO) satellites or geostationary Earth orbit (GEO) satellites), aircraft, or drones, where such NTN equipment forms a non-terrestrial network, such as a ground station. RAN nodes can also be deployed on groups, in which case the RAN nodes can be referred to as terrestrial network equipment. RANs that include terrestrial network equipment are generally referred to as terrestrial networks.

[0033] RAN nodes can have a split architecture, where the functionality of the RAN node (e.g., eNB or gNB) is distributed among various entities. A RAN node with a split architecture can include Radio Units (RUs) (or Remote Radio Readouts (RRHs), Centralized Units (CUs), and one or more Distributed Units (DUs)). DUs can be connected to RUs via fronthaul links. DUs can be connected to CUs via midrange or F1 interfaces. CUs can be connected to the core network (e.g., core network 108) via backhaul. In a RAN node with a split architecture, the operation of the RAN node can be performed by CUs and DUs. One CU can control one or more DUs.

[0034] The RU converts radio signals sent to and from the antenna into digital signals for transmission over a packet network, handles the digital front-end (DFE) and the lower PHY layer, and includes digital beamforming functionality. The DU is a logical entity (e.g., software) hosted and running on a server located near the RU. The CU is a logical entity (e.g., software) hosted and running on a server. The CU can be hosted and running on its own server, or on the same server hosting and running the DU located near the RU. The DU includes a subset of the functionality of the RAN node (e.g., eNB or gNB), depending on the functional breakdown, and the CU includes other RAN node functionalities not included in the subset of the DU's functionality. The DU may include a subset of the layers of the RAN node's protocol stack, and the CU may include other layers of the protocol stack not included in the subset of the layers in the DU. For example, in some implementations, the DU may include the Radio Link Control (RLC) layer, Media Access Control (MAC) layer, and Physical (PHY) layer of the protocol stack for the RAN node, while the CU may include layers of the RAN node's protocol stack above the RLC layer, such as the Packet Data Convergence Protocol (PDCP) layer, Radio Resource Control (RRC) layer, and Internet Protocol (IP) layer. The operation of the DU is controlled by the CU.

[0035] Core network 208 can have a service-based architecture. The network functions of core network 208 include Access and Mobility Function (AMF), Authentication Server Function (AUSF), Network Exposure Function (NEF), Network Repository Function (NRF), Network Slice Selection Function (NSSF), Policy Control Function (PCF), Session Management Function (SMF), User Plane Function (UPF), Unionized Data Repository (UDM), and Network Data Analysis Function (NWDAF). For ease of explanation, Figure 2 Other network functions of core network 208, such as binding support function (BSF) and billing function (CHF), are not shown.

[0036] AMF processes access, authorization, and authentication of user equipment (including UE 200), and manages the mobility of user equipment 200 when it moves between different radio access networks, cells, or locations.

[0037] The SMF is responsible for establishing, maintaining, and terminating Protocol Data Unit sessions in core network 208. The SMF manages user plane resources and interacts with the UPF in core network 208 to ensure that data packets are correctly routed and forwarded.

[0038] The UDM performs the authentication process, stores and manages user data, including subscriber profiles, authentication credentials, and authorization policies, implements security mechanisms to protect user data and resources of the communication network (e.g., core network 208) from unauthorized access attacks and vulnerabilities, and interacts with other network functions of core network 208 (such as PCF) to enforce access control policies, Quality of Service (QoS) parameters, and service restrictions based on user profiles and subscription plans. The UDM is also responsible for managing the registration of network functions serving user equipment 200.

[0039] The Network Analysis Data Function (NWAF) is configured to collect or retrieve data about one or more network functions (NFs) in the core network, generate analyses based on the data collected or retrieved by the NWAF about one or more NFs, and provide analyses generated for itself or for other NFs that have requested analyses generated by the NWAF. The NWAF may include an Analysis Logic Function (AnLF) configured to generate analyses (e.g., generate statistics and / or generate predictions) based on data collected and / or retrieved by the NWAF about one or more NFs. The NWAF also includes analysis services exposed by the NWAF to provide analyses generated by the AnLF. The NWAF also includes a Model Training Logic Function (NWDAF (MTLF)) configured to train an AI / ML model that can be used by the AnLF to generate analyses based on data collected or retrieved from one or more network functions and / or OAM entities.

[0040] The functions of other network functions of core network 208 will not be described in detail.

[0041] This application aims to address the challenges related to the use of low-frequency carriers.

[0042] exist Figure 3 The text illustrates the challenges in the mid-frequency and low-frequency bands. Figure 3 An environment 330 in which this disclosure may take effect is illustrated schematically. The amount of mid-band spectrum held by the operator may be 10 to 20 times larger than the amount of low-band spectrum. Mid-band spectrum 332 is useful closer to the site (e.g., closer to the base station or cell 310), while low-band spectrum propagates further, making it more useful further away from the site. Low-band spectrum carries a lower percentage of traffic in urban (indoor) and rural areas, while the majority of traffic in urban areas is in the mid-band spectrum. In rural areas, the split of traffic between the low-band and mid-band is more equal. Therefore, if the cell edge is in a rural area, there is a shift in the spectrum used when mobile moves away from or to the cell center.

[0043] The low-frequency band has frequencies less than 1 GHz, while the mid-frequency band has frequencies greater than 1.7 GHz when defined from the operator's perspective.

[0044] The topic was discussed in “New WID over Low-Frequency Carrier Aggregation via Handover” (RP-243317 NR_LBCA_Sw_WID), which indicated the need to enhance the 3GPP specification to achieve the following solution: “The device needs to support handover: when an SCell operation is triggered, the UE needs to handover to the SCell, and during the operation period, there are no simultaneous Tx / Rx events between the PCell and the Scell. After the SCell operation is completed, the device hands back to the PCell.” In the context of this discussion, it involves both the PCell and the Scell ​​being located in the low-frequency band. These handover states are then defined as follows: “Case 1: Tx / Rx on FDD carrier 1 and no Rx on SDL carrier 2; Case 2: Rx on SDL carrier 2 and no Tx / Rx on FDD carrier 1.”

[0045] This application identifies a technical problem: the transition between carrier configurations involves reconfiguration managed by the network. Radio Resource Control (RRC) messages interrupt and load traffic onto the network without creating values ​​for data traffic. Since the low-frequency carrier aggregation studied in the WID study is a dual-band combination, all of which are new FD SDL combinations in the low-frequency band frequency range, there is also a problem where the network (NW) must either enter or leave... Figure 3 The issue of each UE in regions 336, 338, and 340 accessing the intermediate band carrier via a new RRC_Reconfiguration signal transmission results in significant overhead for the new signaling configuration.

[0046] In view of the problems identified in this application, this application proposes the activation of a carrier handover mode while having more carriers configured and activated (i.e., carriers other than the handover carrier). As will be discussed in more detail below, the UE is configured with a list of cells, not limited to dual-band combinations. For example, the list contains a list of cells that the UE can connect to, depending on the UE's location and the signal strength of those cells in the list. In the example, at least one combination of cells will activate the carrier handover mode for the UE. In other words, certain cell combinations can be associated with a carrier handover mode. The cells used for the UE to connect to the cell and thus connect to the cell can be activated by the network. If the network does not activate the combination that requires or activates carrier handover, the UE and the network operate without carrier handover. Once the network sends a cell activation command containing the cell combinations that require or activate carrier handover, the UE and the network operate with carrier handover. Carrier handover can reduce congestion on each carrier involved in the handover (compared to not performing a handover and having all traffic pass through a single carrier). Carrier activation and deactivation will also reduce congestion because the carrier has more space for data because the RRC_Reconfiguration message is skipped.

[0047] Table 1 below (extracted from 3GPP TS38.101) shows some known carrier aggregation combinations, specifically including 5G bands n5 and n29, which are the focus of the study. It shows that these bands exist in combinations of more than two carriers, with the third carrier being a mid-band carrier.

[0048]

[0049] Table 1 In this application, it is proposed that when a UE has coverage of an intermediate frequency band (e.g., n25, n66, and n77 in the table above) that also holds multiple carriers outside of the handover pair in the low frequency band, a higher-order combination (i.e., a larger number of combined carriers) should be used and assigned. Once the UE is configured with a serving cell for these carriers, the NW applies MAC CE Scell ​​activation and deactivation to manage the UE's operational state. Scell ​​activation-deactivation does not involve RRC reconfiguration. However, Scell ​​activation / deactivation does not automatically inform the UE of its operational state.

[0050] In this application, it is proposed that for higher-order combinations, when the combination of active cells requires or is associated with a handover operation, the NW can transmit a signal to the UE to apply a handover operation (i.e., carrier handover). For example, certain Pcell+Scell ​​combinations can activate a carrier handover operation. For example, during carrier aggregation (CA_n5A-n29A) of these carriers, a handover may occur between carriers n5 and n29.

[0051] As illustrated in the example, when the UE is at the cell edge and served by a handover carrier, the UE will still be configured by the NW to perform periodic measurements on the deactivated Scell. This can help to subsequently reactivate the deactivated Scell ​​(e.g., move back to that Scell) if needed.

[0052] refer to Figure 4 To explain secondary cell activation / deactivation and carrier utilization, Figure 4 The diagram schematically illustrates a UE 312 that can move between areas closer to cell 310 (e.g., areas 336, 338) and areas farther from cell 310 (e.g., area 340). Area 336 may be an urban area and may be referred to as a near-field area. Area 338 may be referred to as a transitional field area. Area 340 may be a rural area and may be referred to as a far-field area or cell edge area.

[0053] As in Figure 4 The diagram illustrates how carrier selection can be based on the active Scell. Figure 4 In the bottom left and bottom right sections, underlined carriers indicate those that have been deactivated. In some examples, n29A is a supplementary downlink (SDL) carrier without uplink capability. For example, in near-field region 336, a combination of three carriers can be used for UE 312: CA_n5A-n25A (n29A is inactive) CA_n5A-n66A (n29A is inactive) CA_n5A-n77A (n29A is inactive) Similarly, in far-field region 340, the three carrier aggregation combination can be used for UE 312: CA_n5A-n29A (n25A is inactive) CA_n5A-n29A (n66A is inactive) CA_n5A-n29A (n77A is inactive) In one example, UE 312 moves from far-field region 340 toward the center of the cell (i.e., backward toward base station 310). Upon receiving mid-band coverage, NW reactivates the mid-band carriers while deactivating the supplementary downlink band (n29A). Therefore, in this example, the configuration is all relevant bands, but the active cells in this group are as shown. Thus, in this case, the configuration could be CA_n5A-n29A-n66A, where carriers on bands 5 and 66 are active at the cell center, and carriers on bands 5 and 29 are active at the cell edge. Between the cell center and cell edge, all bands can actually be active, and in some examples, if UE 312 is in a handover operation state or mode in far-field region 340, the change in Scell ​​activation will trigger UE signaling to exit the handover operation state.

[0054] According to this application, Figure 5 The diagram illustrates a configuration strategy for UE 312 to support Low Band Carrier Aggregation (LBCA). Similarly, inactive carriers are indicated by underscores.

[0055] exist Figure 5 In the UHB (Ultra-High Frequency Band, UE Band Group Definition) band, HB (High Frequency Band, UE Band Group Definition) band, and MB (Medium Frequency Band, UE Band Group Definition) band, there is good coverage in the near field 336, and HB and MB in the switching field 338 and rural areas 340, where LBCA handover characteristics become advantageous because these carry 50% of the traffic on the low frequency band.

[0056] However, there is a technical problem at the boundary between conversion field 338 and rural area 340, because the only overlap between the two fields is the root low frequency band (band n5). This may lead to a decrease in the average bit rate for users.

[0057] Therefore, this application has identified the advantageous establishment of additional support for band n29. n29 may be an SDL carrier. Thus, the switching mode between band n5 and band n29 (for example) can be established before disabling or deactivating other bands being used in switching field 338 (e.g., deactivating n25 and / or n66, but only after the switching mode has been established).

[0058] Therefore, in some examples, in addition to the two switched frequency band carriers, UE 312 is also configured to maintain at least one of the other carriers (mid / high frequency band carriers that do not require switching) when entering the far field region 340. “Maintaining” at least one of the other carriers can be understood as keeping at least one of the other carriers (which may also be referred to as another carrier) available so that it can be quickly activated, for example, when sufficient power returns.

[0059] Because in some examples, the UE can support CA_n5A-n29A in concurrent operation mode, or it can only support CA_n5A-n29A in handover operation mode, the transition area 338 can be directed to two different configuration instances of the UE, hereinafter referred to as instance A and instance B. In both of the following cases, the main cell (Pcell) is n5.

[0060] Example A UEs that support concurrent CA operations can use Scell ​​activation and deactivation in frequency bands different from n5 (PCell). It should be noted that n5 and n29 can also be Scells.

[0061] Example B UEs that support handover operations can also use Scell ​​activation and deactivation between frequency bands different from n5 (PCell). However, when the SDL frequency band is activated, the handover operation state transition occurs at the same time as on PCell, and when the n29 SDL Scell ​​is deactivated, it returns to normal FDD (Frequency Division Duplex) operation.

[0062] Based on some examples, how gNB 310 and UE 312 negotiate correct operation can depend on UE 312 declaring its capabilities to gNB 312 or signaling them. For example, UE 312 can declare its support for FDD SDL operation in the LB. When UE 312 declares support for the switched mode, only gNB 310 and UE 312 will participate in that switch mode when the Scell ​​activation command (MB / HB / UHB vs. SDL Scell) is executed. This eliminates the need for RRC reconfiguration to exchange all configurations together.

[0063] There is no need to apply RRC reconfiguration, and different types of UEs in the conversion field 338 can significantly offload NW in the overhead created by reconfiguration (which can be a very large amount of reconfiguration), especially for inbound and outbound traffic in cities.

[0064] about Figure 6 Another example is shown, which Figure 6 Cell configuration strategies that promote fewer gaps in bit rate during the transition from cell center to cell edge are shown.

[0065] exist Figure 6 In the example, in near-field region 336 and switched-field region 338, UE 312 can employ any of the carrier aggregation combinations shown at 342, namely any of the following: CA_n5A-n25A (n29A is inactive) CA_n5A-n66A (n29A is inactive) CA_n5A-n77A (n29A is inactive) It should be noted that even if a carrier (e.g., n29A) is "inactive", it is still configured and remains part of the configuration, despite being inactive.

[0066] exist Figure 6 In the example, in the transition field region 338 and the far field region 340, UE 312 may use any of the carrier aggregation combinations shown at 344, namely any of the following: CA_n5A-n29A (n25A is inactive) CA_n5A-n29A (n66A is inactive) CA_n5A-n29A (n77A is inactive) Similarly, in Figure 6 In the text, inactive carriers are represented by underscores.

[0067] exist Figure 6 The diagram in the lower right corner illustrates an example of switching two carriers while two other carriers are active. As shown, carriers n25 and n29 switch such that when carrier n5 is active, carrier n29 is inactive, and when carrier n5 is inactive, carrier n29 is active. In other words, carriers n5 and n29 can be considered to alternate their activity. The two other carriers n25 and n66 remain active, while carriers n5 and n29 employ their switching mode. It will also be noted that the switching mode may cause interruptions on other carriers (in this case, n25 and n66) compared to the switching of the FDD SDL switching pair carriers (in this case, n5 and n29). As described above, UE 312 can adopt this switching mode when commanded or instructed by the NW to adopt a cell combination (Scell ​​combination) from a list configured to enable the UE to adopt a switching mode.

[0068] As described below, Figure 7 The effects of interruptions between switched and non-switched carriers are shown in more detail. Figure 7 In the example, the switched carriers are n5 and n29, and the non-switched carriers are one or more of n25, n66, and n77.

[0069] Figure 7 The potential impact of interruptions between switched and unswitched carriers is illustrated. An interruption can be considered an internal interruption at UE312, such as an interruption of Tx and / or Rx data symbols. Figure 7 Four examples (i) to (iv) are shown below, which are summarized as follows: (i) Switching carriers n5 and n29, additional non-switched carriers n25 and n66, and interruptions caused by the switching experienced by carriers n25 and n66.

[0070] (ii) Switching carriers n5 and n29, additional non-switched carriers n25 and n66, interruption caused by the switching experienced by carrier n25, and interruption not experienced by carrier n66.

[0071] (iii) Switching carriers n5 and n29, additional non-switched carriers n25 and n66, interruption caused by the switching experienced by carrier n66, and interruption not experienced by carrier n25.

[0072] (iv) Switch carriers n5 and n29, with additional non-switched carriers n25 and n66, and carriers n25 and n66 not experiencing any interruption.

[0073] According to some examples, UE 312 is configured to inform the network of its ability to interrupt data transfers between switched and non-switched carriers. In other words, UE 312 can inform the network of interruption behavior. For example, UE 312 can be configured to report to the NW which non-switched carriers experience interruptions caused by switched carriers. For instance, when UE 312 has indicated that no interruption is required for operation via the first (switched) carrier, the second (switched) carrier, and the additional (non-switched) carrier, the UE's information about its interruption capability can include information that the additional (non-switched) carrier does not experience a data interruption. Alternatively, when UE 312 has indicated that an interruption is required for operation via the first (switched) carrier, the second (switched) carrier, and the additional (non-switched) carrier, the UE's information about its interruption capability can include information that the additional (non-switched) carrier does indeed experience a data interruption. This enables the network to make informed decisions about which non-switched carriers (e.g., carriers without interruptions) to select. This can help improve data rates.

[0074] Figure 8 This shows UE 812 (which can be considered equivalent to) Figure 1 UE 120 and Figure 4 UE 312) and Network (NW) 850 (which can be considered equivalent to Figure 1 Network 110 and Figure 4 The signaling diagram for communication between networks 310 in the example. In this example, NW includes Pcell 810, a first secondary cell Scell1 shown at 852, and a second secondary cell Scell2 shown at 854. Figure 8 The signaling diagram in the image illustrates how the activation and deactivation of the carrier (n29 in this case) initiates and stops the mode switching.

[0075] Figure 8 The signaling diagram corresponds to Figure 7 Scene (iv). Figure 8 Mapped to Figure 7 In scenario (iv), Scell2 854 is considered an SDL carrier (i.e., carrier n29), PCell is the root FDD carrier in the low-frequency band (i.e., carrier n5), and SCell1 is the continuous carrier (i.e., carrier n25) excluding the handover pair. The continuous carrier (n25) does not experience any interruption caused by the handover between PCell (n5 in this example) and SCell2 (n29 in this example).

[0076] The following is an explanation Figure 8 The steps.

[0077] 1. UE 812 sends information to NW 850 regarding its ability to use carrier aggregation combinations that utilize a carrier handover mode that switches between a first carrier and a second carrier. More specifically, UE 812 sends information to network 850 (more specifically, to Pcell 810 of NW 850) regarding its ability to use FDD-SDL LB-LB handover operations. In addition to the two low-frequency band handover carriers, this information may also include information about additional carriers that are affected or unaffected by LB-LB handover.

[0078] 2. The PCell 810 is configured for data connectivity.

[0079] 3. PCell 810 participates in active data communication. It can be seen that SCell1 852 and SCell2 854 have not yet been configured and are therefore not active.

[0080] 4. The RRC connection is reconfigured, adding SCell1 852 and SCell2 854 as secondary carriers, and configuring PCell 810 and SCell2 854 to operate in the handover scheme. In this step, only PCell 810 is active. Figure 7 As an example, PCell 810 can be in band n5, SCell1 852 in band n66 and SCell2 854 in band n29.

[0081] 5. The network decides to activate SCell1 852, but not SCell2 854. Figure 6 In contrast, UE 810 can be in the near field or the transition field and requires additional resources. The evaluation of UE 812 indicates that since SCell2 854 is not activated, there is no reason to enable the handover scheme on PCell 810.

[0082] 6. UE 810 has the implementation to be applied. UE 810 must determine when to participate in handover mode operations and the state of which carriers it must apply to. Determining that the RRC configuration is authorized (step 4) with handover operations, UE 812 is configured to react to Scell ​​activation / deactivation in commands from NW 850 (e.g., MAC / CE messages) to potentially also alter the handover operations of the front end. In the example, the configuration information in step 1 indicates how each SCell will behave if PCell initiates handover. For example, the UE is configured with an implementation that triggers only in certain CA combinations when they involve FDD SDL handover operations. If the UE is in such an RRC configuration state, the UE knows it must now observe from MAC / CE instructions on Scell ​​activation / deactivation, not only activating and deactivating these, but also triggering handover mode operations for both FDD-SDL carriers, including those for any potentially additional Scells, when switching to FD SDL state. Figure 7 Any of states (i) to (iv) in the diagram. For example, determining when to participate in a handover state operation may include checking the identity of the carrier to which the handover mode is to be applied, which may include checking that those carriers include at least one supplementary downlink (SDL) carrier. Although this disclosure uses FDD SDL as an example of using carrier handover, PCell and Scell ​​may also use other types of duplex combinations, such as FDD-FDD, TDD-TDD, TDD-FDD, or others.

[0083] 7. SCell1 852 is now active, and there is parallel data communication between UE 812 and PCell 810 and SCell1 852.

[0084] 8. Activate SCell2 854 on top of SCell1 852 via network.

[0085] 9. UE 810 is configured to now activate the handover mode between LB-LB handover pairs based on the activation of SCell2 854. In some examples, UE 810 is configured to activate the handover mode between LB-LB handover pairs purely based on the activation of SCell2 854.

[0086] 10. UE 812 now initiates the handover mode between PCell 810 and SCell2 854. As shown, the network can still communicate with SCell1 852 in parallel from two handover states, namely, the two handover states being either: PCell 810 is active when SCell2 854 is inactive, or PCell 810 is inactive when SCell2 854 is active (see [link to handover mode]). Figure 7(Switching mode in scenario (iv)).

[0087] 11. Network 850, or more specifically PCell 810, now deactivates SCell1 852, while SCell2 854 remains active.

[0088] 12. UE 812 is configured to now determine that the affected SCell (Scell1 852) does not affect the handover mode between LB-LB handovers, and remain in the current handover operation involved at step 8 for Pcell 810 and Scell2 854.

[0089] 13. PCell 810 and SCell2 854 are currently active, and handover data communication between UE 812 is performed using PCell 810 and SCell2 854. In other words, network 850 can communicate with either PCell 810 or SCell2 854, but not in parallel.

[0090] It will be understood that the described apparatus, method, and user equipment enable rapid activation-deactivation of switching modes without requiring RRC reconfiguration between areas served by low-band or low + mid-band frequencies.

[0091] In addition, this disclosure provides the distinction between the state of UE use and the state of UE operation (e.g., LB-LB FDD-SDL CA).

[0092] This disclosure also facilitates the switching of UEs with handover operations between the switching field area and the far field area, and vice versa, while still providing support for UEs without handover requirements.

[0093] Furthermore, this disclosure does not apply scheduling restrictions to carriers that do not require scheduling restrictions.

[0094] This disclosure also provides a UE implementation for linking a handover operation from the MAC CE Scell ​​state to a hardware handover operation for an affected FDD SDL carrier.

[0095] Figures 9 to 11 It is a flowchart based on some example methods.

[0096] refer to Figure 9 ,Should Figure 9 A method performed by an apparatus (such as a UE) is shown, in which, at S901, the method includes: storing information of a cell list, the cell list including a primary cell and one or more secondary cells, and associating at least one cell combination from the cell list with a carrier handover mode.

[0097] At S902, the method includes: using a first carrier aggregation combination and, in response to an instruction for connecting to at least one cell combination associated with a carrier switching mode, switching from using the first carrier aggregation combination to using a second carrier aggregation combination, wherein the second carrier aggregation combination utilizes a carrier switching mode and the carrier switching mode causes the device to switch between the first carrier and the second carrier.

[0098] refer to Figure 10 ,Should Figure 10 A method performed by a device (such as a UE) is shown, in which, at S1001, the method includes: connecting to a primary cell and one or more secondary cells.

[0099] At S1002, the method includes: switching the device from a first carrier aggregation combination to a second carrier aggregation combination, wherein in the second carrier aggregation combination, a carrier switching mode is utilized between the first and second carriers, while a third carrier remains available in a continuous manner, wherein interruption behavior on the third carrier is based on one or more capabilities of the device, the interruption behavior being related to data interruption of the device on the third carrier.

[0100] At S1003, the method includes: sending an indication of an interruption behavior associated with a combination of the first carrier, the second carrier, and the third carrier.

[0101] refer to Figure 11 ,Should Figure 11 A method performed by a user equipment is shown, in which, at S1101, the method includes: storing information of a cell list, the cell list including a primary cell and one or more secondary cells, and associating at least one cell combination from the cell list with a carrier handover mode.

[0102] At S1102, the method includes: instructing the user equipment to operate via a first carrier aggregation combination and a second carrier aggregation combination, wherein the second carrier aggregation combination utilizes a carrier switching mode.

[0103] At S1103, the method includes: using a first carrier aggregation combination and in response to an instruction received at the user equipment for connecting to at least one cell combination associated with a carrier switching mode, switching the user equipment from using the first carrier aggregation combination to using a second carrier aggregation combination, wherein the second carrier aggregation combination utilizes a carrier switching mode and the carrier switching mode causes the user equipment to switch between the first carrier and the second carrier.

[0104] While references to “a,” “an,” or “some” examples may be made throughout this disclosure, this does not necessarily mean that each reference is made to the same example, or that a particular feature applies only to a single example. Individual features of different examples may also be combined to provide other examples. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an example, whether explicitly stated or not, applying such a feature, structure, or characteristic in conjunction with other examples is within the knowledge of those skilled in the art. It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another.

[0105] It should be understood that the above references to various network functions (e.g., AMF, SMF, etc.) can be implemented by means of at least some of the functions associated with these network functions. Furthermore, means configured to implement network functions can also be configured as virtual network function instances that implement the network function.

[0106] It should be understood that the device may include or be coupled to other units or modules used in or for transmitting and / or receiving, such as a radio section or a radio head. Although the device has been described as a single entity, different modules and memories may be implemented in one or more physical or logical entities.

[0107] Note that while some examples have been described regarding 5G networks, similar examples can be applied to other networks and communication systems. Therefore, although some examples have been described above by way of illustration, referencing certain example architectures used in wireless networks, technologies, and standards, these other examples can be applied to any other suitable form of communication system compared to those shown and described herein.

[0108] This document also notes that several variations and modifications may be made to the various examples described herein without departing from the scope of this disclosure.

[0109] As used herein, the phrases “at least one of A or B,” “at least one of A and B,” and “A and / or B” mean (A), (B), or (A and B). For the purposes of this disclosure, the phrase “A, B, and / or C” means (A), (B), (C), (A and B), (A and C), (B and C), or (A, B, and C).

[0110] As used herein, unless otherwise stated (e.g., using "otherwise" or "or in an alternative"), the term "or" means non-exclusive "or".

[0111] As used herein, unless explicitly stated otherwise, “responding to A” to perform a step does not indicate that the step is performed immediately after “A” occurs and one or more intermediate steps may be included. Similarly, “based on A” to perform a step or function does not indicate that the step or function is performed solely based on “A”, as one or more additional conditions may be included.

[0112] Figure 12 A block diagram of apparatus 1210 is shown by way of example. Apparatus 1210 includes, for example, at least one processor 1212 and at least one memory 1214 storing instructions 1215, which, when executed by the at least one processor, can cause apparatus 1210 to perform at least one or more methods as disclosed herein. In some examples, at least one memory and instructions (e.g., computer program code, software, etc.) are configured, together with at least one processor, to cause apparatus 1210 to perform one or more methods as disclosed herein.

[0113] Processor 1212 may include, or be configured as, one or more circuit systems configured to perform phases of the methods described herein. As used herein, the term “circuit system” may refer to one or more or all of the following: (a) a hardware circuit implementation, such as an implementation in an analog, digital, and / or quantum circuit system; and (b) a combination of (one or more) hardware circuits and software, such as applicable: (i) a combination of (one or more) analog, digital, and / or quantum hardware circuits with software / firmware; and (ii) any or all portions of (one or more) hardware processors having software (including digital and / or quantum processors), and (one or more) memories that work together to enable a device (such as a device, computing device, user equipment, or server) to perform various functions; and (c) any or all portions of (one or more) hardware circuits that require software (e.g., firmware) to operate (such as (one or more) microprocessors, (one or more) processors, and / or (one or more) quantum processors), but the software may be absent when operation is not required. This definition of circuit system applies to all uses of the term in this disclosure, including in any claim. As another example, as used in this disclosure, the term "circuit system" also encompasses implementations of hardware circuitry or processors (or processors) or a portion thereof and their accompanying software and / or firmware. For example, and if applicable to certain claim elements, the term "circuit system" also encompasses baseband integrated circuits or processor integrated circuits for use in mobile devices or servers, cellular network devices, or other computing or networking devices.

[0114] The memory 1214 can be implemented using any suitable data storage technology. The memory may include a database for storing data. The memory 1214 may be at least partially external to the device 1210, but is accessible from the device 1210.

[0115] Instruction 1215 may be included in a computer-readable medium or a non-transitory computer-readable medium. As used herein, the term non-transitory refers to a limitation on the medium itself (i.e., tangible rather than tactile), rather than a limitation on the persistence of data storage (e.g., random access memory (RAM) versus read-only memory (ROM).

[0116] For example, device 1210 may be a terminal device, such as the UE previously described. As another example, the device may be included in such a terminal device (e.g., as a chipset configured to control the terminal device). Device 1210 may be caused or configured to perform at least one or more of the methods described in the examples.

[0117] As another example, device 1210 may be a network node, such as the network node previously described. In another example, the device may be included in such a network node, for example, as a chipset configured to control a network node. Device 1210 may be caused or configured to perform at least one or more of the methods described in the examples.

[0118] The device may include one or more entities of any protocol layer, such as a MAC entity, RRC entity, RLC entity, PDCP entity, or PHY entity. In some examples, the entity may be configured to perform at least the methods of the described examples and / or any one or more examples of the described examples.

[0119] Device 1210 may include a radio interface 1216. Radio interface 1216 may provide communication capabilities to device 1210. Radio interface 1216 may include a receiver configured to receive information according to at least one cellular or non-cellular standard. Radio interface 1216 may include a transmitter configured to transmit information according to at least one cellular or non-cellular standard. Receivers may include more than one receiver. Transmitters may include more than one transmitter. Radio interface 1216 may include a transceiver configured to receive and transmit information according to at least one cellular or non-cellular standard. Transceivers may include more than one transceiver.

[0120] Device 1210 may include a user interface 1128, which includes at least one of, for example, a keypad, microphone, touch display, display, speaker, etc. User interface 1218 can be used to control the device by a user. User interface 1218 may be external to device 1210. For example, device 1210 may be connected to another device, such as a computer, via a wireless or wired connection, and device 1210 may be controlled by a user via the computer.

[0121] In some examples, at least some of the processes described herein can be performed by means including components for performing at least some of the processes. Components for performing the method steps disclosed herein may include software and / or hardware components of means 1210. For example, at least one processor 1212, memory 1214, and computer program code form components for performing one or more methods disclosed herein, as well as any examples. As used herein, the term “component” should be interpreted in the singular (i.e., referring to a single element) or the plural (i.e., referring to a combination of single elements). Thus, the term “component for [performing A, B, C]” should be interpreted to encompass means in which there is only one component for performing A, B, and C, or in which there are different components for performing A, B, and C, or in which there are partially or completely overlapping components for performing A, B, and C. Furthermore, the terms "component for performing A, component for performing B, component for performing C" should be interpreted as encompassing an apparatus in which there is only one component for performing A, B, and C, or in which there are different components for performing A, B, and C, or in which there are partially or completely overlapping components for performing A, B, and C.

[0122] The scope of protection sought by the various examples of this disclosure is set forth in the independent claims. Examples and features described in this disclosure that are not within the scope of the independent claims, if any, shall be interpreted as examples useful for understanding the various examples of this disclosure.

[0123] Although examples of this disclosure have been described above with reference to the accompanying drawings, it is clear that the examples are not limited thereto, but can be modified in several ways within the scope of this disclosure. Therefore, all words and expressions should be interpreted broadly, and they are intended to illustrate rather than limit these examples. It should be understood that the scope of this disclosure can be implemented and adapted in various ways as technology advances. Furthermore, it will be apparent to those skilled in the art that the described examples can, but are not required to, be combined with other examples in various ways.

[0124] Furthermore, the various implementations of this disclosure can be described with reference to the following terms, and their features can be combined in any reasonable manner.

[0125] Clause 1. An apparatus for wireless communication, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus to at least: connect to a primary cell and one or more secondary cells; switch the apparatus from a first carrier aggregation combination to a second carrier aggregation combination, wherein in the second carrier aggregation combination, a carrier switching mode is utilized between the first and second carriers while a third carrier remains continuously available, wherein interruption behavior on the third carrier is based on one or more capabilities of the apparatus, the interruption behavior relating to data interruption of the apparatus on the third carrier; and transmit an indication of the interruption behavior associated with a combination of the first, second, and third carriers.

[0126] Clause 2. The apparatus according to Clause 1, wherein the first carrier and the second carrier include low-frequency carriers.

[0127] Clause 3. The apparatus according to Clause 1, wherein the third carrier includes any one of the following: a low-frequency band carrier; a mid-frequency band carrier; a high-frequency band carrier; or an ultra-high-frequency band carrier.

[0128] Clause 4. The apparatus according to Clause 1, wherein the apparatus is further configured to perform an instruction to receive the third carrier from the network, and the third carrier does not experience the data interruption based on the apparatus having indicated that operation via the first carrier, the second carrier, and the third carrier does not require interruption, or the third carrier experiences the data interruption based on the apparatus having indicated that operation via the first carrier, the second carrier, and the third carrier requires interruption.

[0129] Clause 5. The apparatus according to Clause 1, wherein the capability of the apparatus includes information on at least one frequency band combination, the at least one frequency band combination comprising at least two carriers operating in a switching state and at least one carrier operating in a continuous state.

[0130] Clause 6. The apparatus according to Clause 5, wherein the at least one frequency band combination includes information on which carriers operating in a continuous state are subject to the data interruption caused by the switching between the first carrier and the second carrier.

[0131] Clause 7. The apparatus according to any one of Clauses 1 to 6, wherein the apparatus includes user equipment.

[0132] Clause 8. A method for wireless communication performed by a device, the method comprising: connecting to a primary cell and one or more secondary cells; switching the device from a first carrier aggregation combination to a second carrier aggregation combination, wherein in the second carrier aggregation combination, a carrier handover mode is utilized between the first carrier and the second carrier, while a third carrier remains available in a continuous manner, wherein an interruption behavior on the third carrier is based on one or more capabilities of the device, the interruption behavior being related to a data interruption of the device on the third carrier; and transmitting an indication of the interruption behavior associated with a combination of the first carrier, the second carrier, and the third carrier.

[0133] Clause 9. The method according to Clause 8, wherein the first carrier and the second carrier include low-frequency carriers.

[0134] Clause 10. The method according to Clause 8, wherein the third carrier includes any one of the following: a low-frequency band carrier; a mid-frequency band carrier; a high-frequency band carrier; or an ultra-high-frequency band carrier.

[0135] Clause 11. The method according to Clause 8 includes receiving an indication of the third carrier from the network, and the third carrier does not experience the data interruption based on the device having indicated that operation through the first carrier, the second carrier, and the third carrier does not require interruption, or the third carrier experiences the data interruption based on the device having indicated that operation through the first carrier, the second carrier, and the third carrier requires interruption.

[0136] Clause 12. The method according to any one of Clauses 8 to 11, wherein the capability of the device includes information on at least one frequency band combination, the at least one frequency band combination comprising at least two carriers operating in a switching state and at least one carrier operating in a continuous state.

[0137] Clause 13. The method according to Clause 12, wherein the at least one frequency band combination includes information on which carriers operating in a continuous state are subject to the data interruption caused by the switching between the first carrier and the second carrier.

[0138] Clause 14. A computer program comprising instructions, which, when executed by a device, cause the device to perform at least the following operations: connect to a primary cell and one or more secondary cells; switch the device from a first carrier aggregation combination to a second carrier aggregation combination, wherein in the second carrier aggregation combination, a carrier handover mode is utilized between the first and second carriers, while a third carrier remains available in a continuous manner, wherein interruption behavior on the third carrier is based on one or more capabilities of the device, the interruption behavior relating to data interruption on the third carrier by the device; and send an indication of the interruption behavior associated with a combination of the first, second, and third carriers.

Claims

1. An apparatus for wireless communication, comprising: At least one processor; as well as At least one memory storing instructions that, when executed by the at least one processor, cause the device to perform at least the following: Connects to the primary cell and one or more secondary cells; The device is switched from a first carrier aggregation combination to a second carrier aggregation combination, wherein in the second carrier aggregation combination, a carrier switching mode is used between the first and second carriers, while the third carrier remains available in a continuous manner, wherein the interruption behavior on the third carrier is based on one or more capabilities of the device, and the interruption behavior is related to the data interruption of the device on the third carrier; Send an indication of the interruption behavior associated with the combination of the first carrier, the second carrier, and the third carrier.

2. The apparatus of claim 1, wherein the first carrier and the second carrier comprise low-frequency carriers.

3. The apparatus according to claim 1, wherein the third carrier includes any one of the following: a low-frequency band carrier; a mid-frequency band carrier; a high-frequency band carrier; or an ultra-high-frequency band carrier.

4. The apparatus of claim 1, wherein the apparatus is further configured to perform an instruction to receive the third carrier from the network, and Based on the fact that the device has indicated that operation via the first carrier, the second carrier, and the third carrier does not require interruption, and the third carrier does not experience the data interruption, or The data interruption occurs on the third carrier, based on the device having indicated that operation via the first carrier, the second carrier, and the third carrier requires interruption.

5. The apparatus of claim 1, wherein the capability of the apparatus includes information on at least one frequency band combination, the at least one frequency band combination comprising at least two carriers operating in a switching state and at least one carrier operating in a continuous state.

6. The apparatus of claim 5, wherein the at least one frequency band combination includes information on which carriers operating in a continuous state are subject to the data interruption caused by the switching between the first carrier and the second carrier.

7. The apparatus according to any one of claims 1 to 6, wherein the apparatus includes user equipment.

8. A method for wireless communication performed by a device, the method comprising: Connects to the primary cell and one or more secondary cells; The device is switched from a first carrier aggregation combination to a second carrier aggregation combination, wherein in the second carrier aggregation combination, a carrier switching mode is used between the first and second carriers, while the third carrier remains available in a continuous manner, wherein the interruption behavior on the third carrier is based on one or more capabilities of the device, and the interruption behavior is related to the data interruption of the device on the third carrier; Send an indication of the interruption behavior associated with the combination of the first carrier, the second carrier, and the third carrier.

9. The method of claim 8, wherein the first carrier and the second carrier comprise low-frequency carriers.

10. The method according to claim 8, wherein the third carrier comprises any one of the following: a low-frequency band carrier; a mid-frequency band carrier; a high-frequency band carrier; or an ultra-high-frequency band carrier.

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