TW202127955A - User equipments and methods for reporting new radio measurement gap requirement information - Google Patents

Abstract

A User Equipment (UE) including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a first base station. The controller is coupled to the wireless transceiver, and configured to receive an RRC reconfiguration message from the first base station via the wireless transceiver, and in response to the UE being configured to provide measurement gap requirement information of NR target bands, send an RRC reconfiguration complete message including the measurement gap requirement information to the first base station via the wireless transceiver.

Description

User equipment and method for reporting new radio measurement gap request information

The present invention generally relates to mobile communications, and, more specifically, to a device and method for user equipment (UE) to report New Radio (NR) measurement gap request information.

In a typical mobile communication environment, such as mobile phones (also known as cellular phones or cell phones) or tablet personal computers (Personal Computer, PC) with wireless communication capabilities UE (also known as mobile station (Mobile Station, MS) ) Can send voice and/or data signals to one or more service networks. The wireless communication between the UE and the service network can be performed using various radio access technologies (Radio Access Technologies, RAT), for example, Global System for Mobile communication (GSM) technology, General Packet Radio Service (General Packet Radio Service) Radio Service, GPRS) technology, Enhanced Data rates for Global Evolution (EDGE) technology, Wideband Code Division Multiple Access (WCDMA) technology, Code Division Multiple Access 2000 (Code Division Multiple Access 2000, CDMA-2000) technology, Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) technology, Worldwide Interoperability for Microwave Access (WiMAX) Technology, Long Term Evolution (LTE) technology and advanced LTE (LTE-Advanced, LTE-A) technology, etc.

These wireless technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at the municipal, national, regional, and even global levels. An example of an emerging telecommunications standard is 5G New Radio (NR). 5G NR is an enhancement set to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). Its design aims to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs and improving services.

In LTE and 5G, a "measurement gap" technology has been proposed. The technical idea is to create a small gap during the transmission and/or reception period when there is no transmission and/or reception between the cell and the serving cell, thereby allowing the UE to switch to the target cell and perform signal quality measurement. In order to perform this work seamlessly, a gap definition agreement must be well established between the UE and the network. However, 3GPP has not yet defined a way for the UE to report measurement gap requirement information in 5G NR.

Seek a solution.

This application proposes to allow the UE to report New Radio (NR) measurement gap requirement information during the radio resource control reconfiguration process.

In the first aspect of this application, a UE including a wireless transceiver and a controller is provided. The wireless transceiver is configured to perform wireless transmission and reception to and from the first base station. The controller is coupled to the wireless transceiver, and the controller is configured to: receive RRC reconfiguration messages from the first base station via the wireless transceiver, and send measurements including measurements to the first base station via the wireless transceiver The RRC reconfiguration completion message of the gap requirement information responds to the measurement gap requirement information that the UE is configured to provide the NR target frequency band.

In the first implementation form of the first aspect of the present application, the controller is further configured to determine whether the RRC reconfiguration message includes an indicator for requesting the UE to report the measurement gap requirement information, and to determine that the UE is configured To provide the measurement gap requirement information, the RRC reconfiguration message includes the indicator for requesting the UE to report the measurement gap requirement information in response to the RRC reconfiguration message.

In the second implementation form of the first aspect of the present application, the controller is further configured to determine whether a handover of the UE from one cell to another is occurring, or compared with the information reported by the UE last time, Whether the measurement gap requirement information is changed, and determine whether the UE is configured to provide the measurement gap requirement information in response to the handover of the UE from the one cell to the other cell is occurring, or in response to the last time the UE Compared with the reported information, the measurement gap requires information transformation.

In the third implementation form of the first aspect of the present application, the controller is further configured to determine whether the UE has not reported any measurement gap requirement information to the first base station on the current RRC connection, and to determine that the UE is configured To provide the measurement gap requirement information in response to the UE not reporting any measurement gap requirement information to the first base station on the current RRC connection.

In the fourth implementation form of the first aspect of the present application, the RRC reconfiguration message includes at least one of Carrier Aggregation (CA) parameters and layer 1 parameters, and is based on the carrier aggregation parameters and the layer 1 parameters. At least one of them determines the measurement gap demand information.

In the fifth implementation form of the first aspect of the application in combination with the fourth implementation form of the first aspect of the application, the CA parameters include the configuration for adding or releasing the secondary cell (Secondary Cell, SCell), and the layer 1 Parameters include Multiple-Input and Multiple-Output (MIMO) configuration.

In the sixth implementation form of the first aspect of the present application, the measurement gap requirement information indicates whether the UE needs a measurement gap to perform synchronization based on (Synchronization Signal Block, SSB) for each of the NR target frequency bands supported by the UE Measurement of signal block.

In the seventh implementation form of the first aspect of the present application in combination with the sixth implementation form of the first aspect of the present application, when the measurement gap is not required, the RRC reconfiguration complete message includes indicating whether the UE needs to be smaller than the measurement The interruption interval of the gap is to perform the measurement based on the synchronization signal block for each of the NR target frequency bands supported by the UE.

In the eighth implementation form of the first aspect of the present application, when the UE is configured with multi-radio access technology dual connectivity for the UE to simultaneously communicate with the first base station as a secondary node (SN) and as a secondary node (SN). When the second base station of the master node (Master Node, MN) communicates, the controller is further configured to send an RRC message including the measurement gap requirement information to the second base station via the wireless transceiver in response Sending the RRC reconfiguration complete message including the measurement gap requirement information to the first base station.

In the ninth implementation form of the first aspect of the present application in combination with the eighth implementation form of the first aspect of the present application, the RRC message conforms to the Third Generation Partnership Project (3GPP) for NR ) UE auxiliary information message of Technical Specification (TS) 38.331, and receiving the RRC reconfiguration message from the first base station via Signaling Radio Bearer 3 (SRB3).

In the second aspect of this application, a method is proposed. The method includes the following steps: a UE receives an RRC reconfiguration message from a first base station; and the UE sends an RRC reconfiguration complete message including measurement gap requirement information to the first base station in response to the UE being configured as Provides the measurement gap requirement information of the NR target frequency band.

In the first implementation form of the second aspect of the present application, the party further includes the following steps: determining by the UE whether the RRC reconfiguration message includes an indicator for requesting the UE to report the measurement gap requirement information; and determining the The UE is configured to provide the measurement gap requirement information in response to the RRC reconfiguration message including the indicator for requesting the UE to report the measurement gap requirement information.

In the second implementation form of the second aspect of the present application, the party further includes the following steps: the UE determines whether the UE's handover from one cell to another is occurring, or is consistent with the information reported by the UE last time In contrast, whether the measurement gap requirement information is changed; and determining that the UE is configured to provide the measurement gap requirement information in response to the handover of the UE from the one cell to the other cell is occurring, or in response to the Compared with the information reported by the UE last time, the measurement gap requires a change of information.

In the third implementation form of the second aspect of the present application, the party further includes the following steps: determining by the UE whether the UE has not reported any measurement gap requirement information to the first base station on the current RRC connection; and determining the The UE is configured to provide the measurement gap requirement information in response to the UE not reporting any measurement gap requirement information to the first base station on the current RRC connection.

In the fourth implementation form of the second aspect of the present application, the RRC reconfiguration message includes at least one of a carrier aggregation parameter and a layer 1 parameter, and the measurement is determined based on at least one of the carrier aggregation parameter and the layer 1 parameter Gap demand information.

In the fifth implementation form of the second aspect of the present application in combination with the fourth implementation form of the second aspect of the present application, the CA parameters include configurations for SCell addition or release, and the layer 1 parameters include MIMO configurations.

In the sixth implementation form of the second aspect of the present application, the measurement gap requirement information indicates whether the UE needs a measurement gap to perform SSB-based measurement for each of the NR target frequency bands supported by the UE.

In the seventh implementation form of the second aspect of the present application in combination with the sixth implementation form of the second aspect of the present application, when the measurement gap is not required, the RRC reconfiguration complete message includes indicating whether the UE needs to be smaller than the measurement gap. The interruption interval of the gap is the information for performing the SSB-based measurement on each of the NR target frequency bands supported by the UE.

In the eighth implementation form of the second aspect of the present application, the party further includes the following step: when the UE is configured with multi-radio access technology dual connectivity for the UE to simultaneously communicate with the first base station as the SN and as When the second base station of the MN communicates, the UE sends an RRC message including the measurement gap requirement information to the second base station in response to sending the first base station including the measurement gap requirement information. RRC reconfiguration complete message.

In the ninth implementation form of the second aspect of the present application in combination with the eighth implementation form of the second aspect of the present application, the RRC message is a UE auxiliary information message conforming to 3GPP TS 38.331 for NR, and is sent through signaling SRB Receiving the RRC reconfiguration message from the first base station.

By reading the following descriptions of specific embodiments of the apparatus and method for UE reporting NR measurement gap requirement information, other aspects and features of this application will become apparent to those skilled in the art.

This application proposes a user equipment and a method for reporting new radio measurement gap request information. By reporting the measurement gap during the RRC reconfiguration process, the report flexibility and the beneficial effect of reducing the message length required for the report are realized.

The purpose of the following description is to explain the basic principles of this application, and should not be regarded as limiting. It should be understood that the embodiments can be implemented in software, hardware, firmware, or any combination thereof. The terms "include", "include", "include" and/or "include", when used in this document, designate the existence of the described features, integers, steps, operations, elements and/or components, but do not exclude the existence or Add one or more other features, integers, steps, operations, elements, components, and/or combinations thereof.

Figure 1 is a block diagram of a wireless communication environment according to an embodiment of the present application.

As shown in Figure 1, the wireless communication environment 100 may include a UE 110 and a service network 120, where the UE 110 may be wirelessly connected to the service network 120 to obtain mobile services.

The UE 110 can be a feature phone, a smart phone, a PC, a laptop computer, or any wireless communication device supporting the RAT technology (for example, 5G NR technology) used by the service network 120. In another embodiment, the UE may support more than one RAT. For example, the UE can support 5G NR technology and traditional 4G technology such as LTE/LTE-A/TD-LTE technology or WCDMA technology.

The service network 120 may include an access network 121 and a core network (Core Network, CN) 122. The access network 121 is responsible for processing radio signals, terminating radio protocols, and connecting the UE 110 and the core network 122. The core network 122 is responsible for performing mobile management, network-side authentication, and interfacing with public/external networks (for example, the Internet). The access network 121 and the core network 122 may each include one or more network nodes for performing the functions.

In one embodiment, the service network 120 may be a 5G NR network, and the access network 121 and the core network 122 may be the Next Generation Radio Access Network (NG-RAN) and Next Generation Core Network (NG-CN, Next Generation Core Network).

NG-RAN may include one or more base stations, for example, next generation NodeB (gNB), which supports high frequency bands (for example, higher than 24GHz), and each gNB may also include one or more transmitters. The receiving point (Transmission Reception Point, TRP), where each gNB or TRP can be called a 5G base station. Some gNB functions can be distributed in different TRPs, while other gNB functions can be centralized, retaining the flexibility and scope of specific deployment to meet the needs of specific situations.

The 5G base station may form one or multiple cells with different component carriers (Component Carrier, CC) for providing mobile services to the UE 110. The UE 110 may camp on one or more cells formed by one or more gNBs or TRPs. The cell where the UE 110 resides may be called a serving cell, and the serving cell includes a primary cell (Primary Cell, PCell) and one or more cells. A secondary cell (Secondary Cell, SCell).

NG-CN usually consists of various network functions, including Access and Mobility Function (AMF), Session Management Function (SMF), Policy Control Function (PCF), and application functions (Application Function, AF), authentication server function (Authentication Server Function, AUSF), user plane function (User Plane Function, UPF) and user data management (User Data Management, UDM), each of which can be Implemented as network components on dedicated hardware, or implemented as software instances running on dedicated hardware, or implemented as virtual functions that generate physical entities on a suitable platform (for example, cloud infrastructure).

AMF provides UE-based authentication, authorization, and mobility management. SMF is responsible for session management and assigns Internet Protocol (IP) addresses to UEs, and it also selects and controls UPF for data transfer. If the UE has multiple sessions, different SMFs can be allocated to each session to manage different SMFs separately and different SMFs can provide different functions for each session. AF provides information about packet flow to PCF, which is responsible for policy control, in order to support Quality of Service (QoS). Based on this information, PCF determines strategies for mobility and session management so that AMF and SMF can operate normally. AUSF stores information for UE authentication, while UDM stores UE subscription information.

It should be understood that the wireless communication environment 100 described in the embodiment in Figure 1 is only for illustrative purposes and is not intended to limit the scope of this application. For example, the RAT used by the service network 120 may be 5G NR technology. In other words, the service network 120 can be a 6G, 7G, or 8G 3GPP network. Alternatively, the communication environment 100 may further include a 4G network using LTE/LTE-A/TD-LTE technology. For example, 4G networks may include Evolved-Universal Terrestrial Radio Access Network (E-UTRAN) and Evolved Packet Core (EPC). E-UTRAN may include one or more evolved Node B (evolved NodeB, eNB) (for example, macro eNB, femto eNB, or pico eNB), where each eNB may be referred to as a 4G base station. When UE 110 is configured with Multi-RAT Dual Connectivity (MR-DC), the UE can communicate with 5G base stations (for example, gNB) and 4G base stations (for example, eNB) at the same time, where 4G base stations can Configured as a master node (Master Node, MN), and a 5G base station can be configured as a secondary node (Secondary Node, SN).

Figure 2 is a block diagram of a UE according to an embodiment of the present application.

As shown in Figure 2, the UE may include a wireless transceiver 10, a controller 20, a storage device 30, a display device 40, and an input/output (Input/Output, I/O) device 50.

The wireless transceiver 10 can be configured to perform wireless transmission and reception to and from the base station of the service network 120 and from the base station of the service network 120.

Specifically, the wireless transceiver 10 may include a baseband processing device 11, a radio frequency (RF) device 12 and an antenna 13. The antenna 13 may include an antenna array for beamforming.

The baseband processing device 11 is configured to perform baseband signal processing and control communication between a user identification card (not shown) and the RF device 12. The baseband processing device 11 may include a plurality of hardware components to perform baseband signal processing, including analog-to-digital conversion (ADC)/digital-to-analog conversion (DAC), gain adjustment, and modulation /Demodulation, encoding/decoding, etc.

The RF device 12 can receive the RF wireless signal via the antenna 13 and convert the received RF wireless signal into a baseband signal, which is processed by the baseband processing device 11, or the RF device 12 receives the baseband signal from the baseband processing device 11 and will receive it The baseband signal is converted into an RF wireless signal, and then transmitted via the antenna 13. The RF device 12 may also include a plurality of hardware devices to perform radio frequency conversion. For example, the RF device 12 may include a mixer for multiplying the baseband signal with a carrier that oscillates in the radio frequency of the supported RAT. Depending on the RAT used, the radio frequency can be any radio frequency used in 5G NR technology ( For example, millimeter wave (30GHz~300GHz) may be 900MHz, 2100MHz, or 2.6GHz used in LTE/LTE-A/TD-LTE technology, or another radio frequency.

The controller 20 can be a general-purpose processor, a micro control unit (Micro Control Unit, MCU), an application processor, a digital signal processor (Digital Signal Processor, DSP), a graphics processing unit (Graphics Processing Unit, GPU), and a holographic processing unit. (Holographic Processing Unit, HPU), Neural Processing Unit (NPU), etc. The controller 20 includes various circuits that provide the following functions: data processing and calculation, controlling the wireless transceiver 10 and the service network 120 for wireless communication , Store data (for example, program code) to the storage device 30 and retrieve data (for example, program code) from the storage device 30, send a series of frame data (for example, represented as text messages, graphics, images, etc.) to the display The device 40 and the user input or output signal from the I/O device 50 are received.

Specifically, the controller 20 can coordinate the aforementioned operations of the wireless transceiver 10, the storage device 30, the display device 40, and the I/O device 50 for a method for the UE to report the NR measurement gap requirement information.

In another embodiment, the controller 20 may be incorporated into the baseband processing device 11 to serve as a baseband processor.

As understood by those skilled in the art, the circuit of the controller 20 usually includes a transistor, which is configured to control the operation of the circuit according to the functions and operations described herein. It will be further understood that the specific structure or interconnection of the transistor is usually determined by a compiler, for example, a Register Transfer Language (RTL) compiler. The RTL compiler can be operated by the processor based on scripts that are very similar to assembly language codes to compile the scripts into the final circuit layout or the form used in manufacturing. In fact, RTL is known for its role and use in facilitating the design process of electronic and digital systems.

The storage device 30 may be a non-transitory machine-readable storage medium, including a memory (for example, flash memory or non-volatile random access memory (Non-Volatile Random Access Memory, NVRAM)), a magnetic storage device (for example, , Hard disk or tape), optical disk or any combination thereof, used to store data, instructions and/or code of the application, communication protocol, and/or method of UE reporting NR measurement gap requirement information.

The display device 40 can be a liquid crystal display (Liquid-Crystal Display, LCD), a light-emitting diode (Light-Emitting Diode, LED) display, an organic LED (Organic LED, OLED), or an electronic paper display (Electronic Paper Display EPD), etc., Used to provide display functions. Alternatively, the display device 40 may further include one or more touch sensors arranged on or below it for sensing the contact, connection, or proximity of an object (for example, a finger or a stylus).

The I/O device 50 may include one or more buttons, a keyboard, a mouse, a touch pad, a camera, a microphone, and/or a speaker, etc., to serve as a Man-Machine Interface (MMI) for interacting with the user. ).

It should be understood that the components described in the embodiment in FIG. 2 are for illustrative purposes only, and are not intended to limit the scope of the present application.

For example, the UE may include more components, such as a power supply and/or Global Positioning System (GPS) equipment, where the power supply may be a mobile/replaceable battery that provides power to all other components of the UE, and the GPS equipment The location information of the UE can be provided for use by some location-based services or applications. Alternatively, the UE may include fewer components. For example, the UE may not include the display device 40 and/or the I/O device 50.

FIG. 3 is a flowchart of a method for a UE to report NR measurement gap requirement information according to an embodiment of the present application.

In this embodiment, the method for the UE to report NR measurement gap requirement information can be applied to a UE (for example, UE 110) that is wirelessly connected to one or more base stations (for example, gNB and/or eNB) and UE executes.

First, the UE receives a radio resource control (Radio Resource Control, RRC) reconfiguration message from the first base station (step S310).

Specifically, the RRC reconfiguration message may at least include Carrier Aggregation (CA) parameters and/or Layer 1 (Layer 1, L1) parameters, and the UE may determine measurement gap requirement information based on the CA parameters and/or L1 parameters. CA parameters may include configurations for Scell addition or release, and L1 parameters may include multiple-input and multiple-output (MIMO) configurations (for example, the number of antennas and layers used for MIMO).

Then, the UE sends an RRC reconfiguration complete message including measurement gap requirement information to the first base station in response to the measurement gap requirement information that the UE is configured to provide the NR target frequency band (step S320).

Specifically, the measurement gap requirement information indicates whether the UE needs a measurement gap to perform synchronization signal block (SSB)-based measurement on each of the NR target frequency bands supported by the UE.

In addition to the measurement gap requirement information, when the measurement gap is not needed, the RRC reconfiguration complete message can also include an indication of whether the UE needs to be less than the interruption interval of the measurement gap to perform each of the NR target bands supported by the UE. Based on SSB measurement. It should be understood that interruption due to RF switching used for measurement may be a common problem. That is to say, although the UE has two RF chains for communicating with the serving cell and the target cell at the same time, when the RF handover for measuring the target cell occurs, it will still cause an interruption interval in the communication with the serving cell.

Fig. 4 is a schematic diagram showing an exemplary measurement gap and interruption interval according to an embodiment of the present application.

Referring back to Figure 3, in one embodiment, the RRC reconfiguration message may include an indicator for requesting the UE to report measurement gap requirement information, and if the RRC reconfiguration message includes an indicator for requesting the UE to report measurement gap requirement information , It can be determined that the UE is configured to provide measurement gap requirement information.

In another embodiment, the UE can determine whether the UE's handover from one cell to another is taking place based on the CA and/or L1 parameters included in the RRC reconfiguration message, or compare with the information reported by the UE last time, Whether the measurement gap requirement information is changed. If the UE is being handed over from one cell to another cell, or if the measurement gap requirement information changes compared with the information reported by the UE last time, it can be determined that the UE is configured to provide measurement gap requirement information.

In another embodiment, the UE can determine whether the UE has not reported any measurement gap requirement information to the first base station on the current RRC connection, and if the UE has not reported any measurement gap requirement information to the first base station on the current RRC connection , It can be determined that the UE is configured to provide measurement gap requirement information.

Figure 5 is a message sequence diagram for reporting NR measurement gap requirement information according to an embodiment of the present application.

In step S510, the UE receives an RRC reconfiguration message from the gNB. Specifically, the RRC reconfiguration message includes CA and/or L1 parameters. In addition to the CA and/or L1 parameters, the RRC reconfiguration message may also include an indicator for requesting the UE to report measurement gap requirement information. For example, the indicator used to request the UE to report measurement gap requirement information may be included in the "NeedForGapsConfig" information element (Information Element, IE) of the RRC reconfiguration message.

In step S520, the UE applies the CA and/or L1 parameters, and determines that the measurement gap requirement information is changed from the information reported by the UE last time.

In step S530, the UE sends an RRC reconfiguration complete message including measurement gap requirement information to the gNB. Specifically, the measurement gap requirement information can be included in the "NeedForGapsInfoNR" IE of the RRC reconfiguration complete message.

In step S540, the UE receives an RRC reconfiguration message from the gNB. Specifically, the RRC reconfiguration message includes information used for measurement gap addition or release.

In step S550, the UE configures the measurement gap according to the information used to increase or release the measurement gap.

In step S560, the UE sends an RRC reconfiguration complete message to the gNB.

In step S570, the gNB sends an RRC reconfiguration message to the UE in response to the decision to trigger the UE to switch from the gNB to the target gNB. Specifically, the RRC reconfiguration message includes the handover configuration. For example, the handover configuration can be included in the "reconfigurationWithSync" IE of the RRC reconfiguration message, where the "reconfigurationWithSync" IE includes the random access configuration for handover.

In step S580, the UE determines that a handover is occurring based on the handover configuration, and applies the handover configuration.

In step S590, the UE sends an RRC reconfiguration complete message including measurement gap requirement information to the target gNB to complete the handover. Specifically, the measurement gap requirement information may be included in the "NeedForGapsInfoNR" IE of the RRC reconfiguration complete message.

Please note that in Figure 5, steps S540 to S590 are optional. Specifically, if the measurement gap needs to be added or released, steps S540 to S560 are executed, and if a handover occurs, steps S570 to S590 are executed.

In view of the foregoing embodiments in FIGS. 3 to 5, it should be understood that this application allows the UE to report NR measurement gap requirement information during the RRC reconfiguration process. Specifically, all NR bands supported by the UE are reported in the measurement gap requirement information. Advantageously, the reported information only contains enough information, which can reduce the size of the information to be reported and can provide a change in the measurement target. In contrast, in LTE Release 14, the reported measurement gap requirement information only includes the gap requirement of each carrier in the service band (ie, too little information may cause the measurement gap requirement to change every time the measurement target is changed). In traditional LTE, the reported measurement gap requirement information includes the gap requirements of each carrier of all supported frequency bands (that is, the reported information size is too large).

Figure 6 is a message sequence diagram for reporting NR measurement gap requirement information when MR-DC is configured according to an embodiment of the present application.

In step S610, the UE receives the RRC reconfiguration message from the SN via the Signaling Radio Bearer 3 (SRB3). Specifically, the RRC reconfiguration message includes the CA and/or L1 parameters that cause the change of measurement gap requirement information. For example, due to the application of CA and/or L1 parameters Secondary Cell Group (SCG) band combination (Band Combination, BC) will be changed, and the conversion of SCG BC will further lead to the change of measurement gap demand information.

In step S620, the UE updates the measurement gap requirement information based on the CA and/or L1 parameters, and sends an RRC reconfiguration complete message including the measurement gap requirement information to the SN. Specifically, the measurement gap requirement information may be included in the "NeedForGapsInfoNR" IE of the RRC reconfiguration complete message.

In step S630, the SN forwards the measurement gap requirement information of the UE to the MN through an inter-node message. Specifically, the inter-node message can be redefined to transfer UE measurement gap requirement information between SN and MN. For example, the inter-node message can be called UE Information message.

FIG. 7 is a message sequence diagram for reporting NR measurement gap requirement information when configuring MR-DC according to another embodiment of the present application.

In step S710, the UE receives an RRC reconfiguration message from the SN via SRB3. Specifically, the RRC reconfiguration message includes the CA and/or L1 parameters that cause the change of measurement gap requirement information.

In step S720, the UE updates the measurement gap requirement information based on the CA and/or L1 parameters, and sends an RRC reconfiguration complete message including the measurement gap requirement information to the SN. Specifically, the measurement gap requirement information may be included in the "NeedForGapsInfoNR" IE of the RRC reconfiguration complete message.

In step S730, the UE also sends an RRC message including measurement gap requirement information to the MN. For example, the RRC message may be a UE auxiliary information message that complies with 3GPP TS 38.331 for NR.

Please note that the 3GPP specifications mentioned herein are used to teach the spirit of this application, and this application is not limited to this.

In view of the foregoing embodiments in Figures 6 to 7, it can be understood that in the scenario where MR-DC is configured in the present invention, if the measurement gap requirement information is reported in response to the RRC reconfiguration message sent by the SN, it will allow The SN or UE provides the same measurement gap requirement information to the MN, which realizes the synchronization of the UE's measurement gap requirement information between the SN and the MN.

Although the present application has been described by way of examples and based on preferred embodiments, it should be understood that the present application is not limited thereto. Without departing from the scope and spirit of this application, those with ordinary knowledge in the technical field can still make various changes and modifications. Therefore, the scope of this application should be limited and protected by the scope of the following patent applications and their equivalents.

The use of ordinal terms such as ``first'' and ``second'' in the scope of patent applications to rhetoric elements of the scope of the patent application does not mean that an element of the scope of the patent application has any priority, priority or order relative to the scope of another patent application. Or the chronological order of execution of the method. However, such ordinal terms such as "first" and "second" are only used as marks to distinguish one element with the same name from another element with the same name (but Use ordinal numbers) to distinguish the elements of the scope of the patent application.

100: wireless communication environment 110: user equipment 120: service network 122: Core Network 121: access network 10: wireless transceiver 11: Baseband processing equipment 12: RF equipment 12: Antenna 30: storage device 20: Controller 40: display device 50: I/O device S310, S320, S510, S520, S530, S540, S550, S560, S570, S580, S590, S610, S620, S630, S710, S720, S730: steps

You can understand this application more comprehensively by reading the detailed description and examples that follow with reference to the accompanying drawings, in which: Figure 1 is a block diagram of a wireless communication environment according to an embodiment of the present application; Figure 2 is a block diagram showing the UE according to an embodiment of the present application; Figure 3 is a flowchart showing a method for UE to report NR measurement gap requirement information according to an embodiment of the present application; Figure 4 is a schematic diagram showing an exemplary measurement gap and interruption interval according to an embodiment of the present application; Figure 5 is a message sequence diagram for reporting NR measurement gap requirement information according to an embodiment of the present application; Figure 6 is a message sequence diagram showing the NR measurement gap requirement information when MR-DC is configured according to an embodiment of the present application; and Fig. 7 is a message sequence diagram for reporting NR measurement gap requirement information when configuring MR-DC according to another embodiment of the present application.

S310, S320: steps

Claims (11)

A user equipment for reporting new radio measurement gap request information, including: A wireless transceiver configured to perform wireless transmission and reception to and from a first base station; and A controller, coupled to the wireless transceiver, and the controller is configured to: receive a radio resource control reconfiguration message from the first base station via the wireless transceiver, and send a radio resource control reconfiguration message to the first base station via the wireless transceiver; The base station sends a radio resource control reconfiguration complete message including a measurement gap requirement information in response to the measurement gap requirement information that the user equipment is configured to provide a new radio target frequency band. The user equipment for reporting new radio measurement gap request information according to claim 1, wherein the controller is further configured to determine whether the radio resource control reconfiguration message includes a request for requesting the UE to report the measurement gap request information An indicator, and determining that the UE is configured to provide the measurement gap requirement information in response to the radio resource control reconfiguration message including the indicator for requesting the UE to report the measurement gap requirement information. The user equipment for reporting new radio measurement gap request information according to claim 1, wherein the controller is further configured to determine whether a handover of the user equipment from one cell to another is occurring, or is related to the user equipment Compared with the information reported by the user equipment last time, whether the measurement gap demand information is changed, and determine whether the user equipment is configured to provide the measurement gap demand information in response to the user equipment moving from the one cell to the other The handover of the cell is occurring, or in response to a change in the measurement gap demand information compared with the information reported by the user equipment last time. The user equipment for reporting new radio measurement gap request information according to claim 1, wherein the controller is further configured to determine whether the user equipment has not yet reported to the first base station on a current radio resource control connection Any measurement gap requirement information, and determining that the user equipment is configured to provide the measurement gap requirement information in response to the user equipment has not reported any measurement gap requirement information to the first base station on the current radio resource control connection . The user equipment for reporting new radio measurement gap request information according to claim 1, wherein the radio resource control reconfiguration message includes at least one of a carrier aggregation parameter and a layer 1 parameter, and is based on the carrier aggregation parameter and the At least one of the layer 1 parameters determines the measurement gap requirement information. The user equipment for reporting new radio measurement gap request information according to claim 5, wherein the carrier aggregation parameter includes a configuration for adding or releasing a secondary cell, and the layer 1 parameter includes a multiple-input multiple-output configuration. The user equipment for reporting new radio measurement gap request information according to claim 1, wherein the measurement gap requirement information indicates whether the user equipment needs a measurement gap for the new radio target frequency band supported by the user equipment Each of them performs a measurement based on the synchronization signal block. The user equipment for reporting new radio measurement gap request information as described in claim 7, wherein, when the measurement gap is not required, the radio resource control reconfiguration complete message includes indicating whether the user equipment needs to be smaller than the measurement gap An interruption interval is used to perform the measurement based on the synchronization signal block for each of the new radio target frequency bands supported by the user equipment. The user equipment for reporting new radio measurement gap request information as described in claim 1, wherein, when the user equipment is configured with a multi-radio access technology dual connection for the user equipment to be used as a secondary node at the same time When the first base station and the second base station serving as a master node communicate, the controller is further configured to send a radio including the measurement gap requirement information to the second base station via the wireless transceiver. The resource control message is in response to sending the radio resource control reconfiguration complete message including the measurement gap requirement information to the first base station. The user equipment for reporting new radio measurement gap request information as described in claim 9, wherein the radio resource control message is a UE auxiliary information message that complies with one of the technical specifications of the third-generation partnership project for new radio, And receiving the radio resource control reconfiguration message from the first base station via a signaling radio bearer 3. A method for reporting new radio measurement gap request information includes: Receiving a radio resource control reconfiguration message from a first base station by a user equipment; and The user equipment sends a radio resource control reconfiguration complete message including a measurement gap requirement information to the first base station in response to the measurement gap requirement information that the user equipment is configured to provide a new radio target frequency band.

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