Communication method, device, communication system and storage medium

Abstract

The embodiments of the present disclosure relate to the technical field of communications. Disclosed are a communication method and apparatus, and a computer-readable storage medium. The communication method comprises: determining first channel state information-reference signal (CSI-RS) resource information of a serving cell of a terminal; and in response to the first CSI-RS resource information and CSI-RS resource information of a measured neighboring cell satisfying a first condition, determining to execute layer 1 (L1) intra-frequency measurement. In the embodiments of the present disclosure, by means of using the determined first CSI-RS resource information of the serving cell of the terminal as a reference, CSI-RS-based L1 intra-frequency measurement is determined, thereby enhancing CSI-RS-based LTM L1 measurement technology.

Description

Communication methods, devices, systems and storage media Technical Field

[0001] This disclosure relates to the field of communication technology, and more specifically, to a communication method, device, system, and storage medium. Background Technology

[0002] Terminal devices can perform mobility management operations based on certain conditions, such as signal measurement conditions and / or location measurement conditions. L1 / L2 triggered mobility measurement based on channel state information-reference signal (CSI-RS) is a technique used to improve mobility management performance. Summary of the Invention

[0003] This disclosure provides a communication method, device, system, and storage medium.

[0004] A first aspect of this disclosure provides a communication method, the method being executed by a terminal, the method comprising:

[0005] Determine the first channel state information - reference signal CSI-RS resource information of the serving cell of the terminal;

[0006] In response to the first condition being met by the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured, it is determined to perform Layer 1 L1 co-frequency measurement.

[0007] A second aspect of this disclosure provides a communication method, the method being performed by a network device, the method comprising:

[0008] Send first information to the terminal, the first information being used to configure at least one CSI-RS resource information of the serving cell of the terminal;

[0009] The first information is used to determine the first CSI-RS resource information of the serving cell of the terminal;

[0010] Wherein, if the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured meet the first condition, the terminal performs L1 co-frequency measurement.

[0011] A third aspect of this disclosure provides a terminal, including:

[0012] The first processing module is used to determine the first channel state information-reference signal CSI-RS resource information of the serving cell of the terminal.

[0013] In response to the first condition being met by the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured, it is determined to perform Layer 1 L1 co-frequency measurement.

[0014] A fourth aspect of this disclosure provides a network device, including:

[0015] The second transceiver module is used to send first information to the terminal, wherein the first information is used to configure at least one CSI-RS resource information of the serving cell of the terminal;

[0016] The first information is used to determine the first CSI-RS resource information of the serving cell of the terminal;

[0017] Wherein, if the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured meet the first condition, the terminal performs L1 co-frequency measurement.

[0018] A fifth aspect of this disclosure provides a terminal, including:

[0019] One or more processors;

[0020] The terminal is used to execute the optional implementation of the first aspect described above.

[0021] A sixth aspect of this disclosure provides a network device, including:

[0022] One or more processors;

[0023] The network device is used to perform an optional implementation of the second aspect described above.

[0024] A seventh aspect of this disclosure provides a communication system including a terminal and a network device, wherein the terminal is used to implement the method described in the optional embodiments of the first aspect, and the network device is used to implement the method described in the optional embodiments of the second aspect.

[0025] According to an eighth aspect of the present disclosure, a computer-readable storage medium is provided that stores executable instructions which are loaded and executed by the processor to implement the method described in the optional embodiments of the first or second aspect.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0028] Figure 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment;

[0029] Figure 2 is a flowchart illustrating a communication method according to an exemplary embodiment;

[0030] Figure 3 is a flowchart illustrating the communication method according to an embodiment of this disclosure;

[0031] Figure 4 is a flowchart illustrating the communication method according to an embodiment of this disclosure;

[0032] Figure 5a is a schematic diagram of the structure of the terminal proposed in an embodiment of this disclosure;

[0033] Figure 5b is a schematic diagram of the structure of the network device proposed in an embodiment of this disclosure;

[0034] Figure 6a is a schematic diagram of the structure of the communication device proposed in an embodiment of this disclosure;

[0035] Figure 6b is a schematic diagram of the chip structure proposed in an embodiment of this disclosure. Detailed Implementation

[0036] This disclosure provides communication methods, devices, communication systems, and storage media.

[0037] In a first aspect, embodiments of this disclosure propose a communication method, which is executed by a terminal, and the method includes:

[0038] Determine the first channel state information - reference signal CSI-RS resource information of the serving cell of the terminal;

[0039] In response to the first condition being met by the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured, it is determined to perform Layer 1 L1 co-frequency measurement.

[0040] In the above embodiments, by using the first CSI-RS resource information of the determined terminal serving cell as a reference, L1 co-frequency measurement based on CSI-RS is determined, thereby enhancing the LTM L1 measurement technology based on CSI-RS.

[0041] In conjunction with some embodiments of the first aspect, in some embodiments, the first CSI-RS resource information includes at least one of the following: the center frequency of the first CSI-RS, the subcarrier spacing (SCS), and the cyclic prefix (CP) type.

[0042] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0043] The terminal receives first information sent by a network device, the first information being used to configure at least one CSI-RS resource information of the serving cell of the terminal.

[0044] The determination of the first CSI-RS resource information of the serving cell of the terminal includes:

[0045] Based on the first information, the first CSI-RS resource information of the serving cell of the terminal is determined.

[0046] In the above embodiments, the first CSI-RS resource information in at least one CSI-RS resource information of the terminal serving cell configured by the network device can be used as a reference to determine the L1 co-frequency measurement based on CSI-RS, thereby enhancing the LTM L1 measurement technology based on CSI-RS.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments, the SCS and CP types of the at least one CSI-RS are the same.

[0048] In the above embodiments, at least one CSI-RS of the terminal serving cell configured in the network has the same SCS and CP type, so that it is more convenient to use it as a benchmark for comparison with the CSI-RS resource reference of the neighboring cell under test.

[0049] In conjunction with some embodiments of the first aspect, in some embodiments, the at least one CSI-RS shares the same center frequency; or, the at least one CSI-RS is configured with different center frequencies.

[0050] In the above embodiments, at least one CSI-RS of the terminal serving cell configured in the network can be the same or different, so that when it is used as a benchmark to compare with the CSI-RS resource reference of the neighboring cell under test, it can be better applied to different scenarios.

[0051] In conjunction with some embodiments of the first aspect, in some embodiments, the center frequency of the CSI-RS of the neighboring cell under test is the lowest or highest center frequency of the first CSI-RS.

[0052] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first CSI-RS resource information of the serving cell of the terminal includes:

[0053] The first CSI-RS resource information of the serving cell of the terminal is determined based on at least one of the following:

[0054] Resource information of the synchronization signal block (SSB) configured for the terminal;

[0055] Configuration information for Multiple-Input Multiple-Output MIMO;

[0056] Activate Transport Configuration Indicator (TCI) status information;

[0057] Activate the bandwidth section of BWP information.

[0058] In the above embodiments, when the network does not configure the CSI-RS resource information of the serving cell, the first CSI-RS resource information of the serving cell can be determined as a benchmark based on the existing configuration information related to the reference signal to define the CSI-RS-based L1 co-frequency measurement, thereby achieving the purpose of enhancing the CSI-RS-based LTM L1 measurement technology.

[0059] In conjunction with some embodiments of the first aspect, in some embodiments, determining the first CSI-RS resource information of the serving cell of the terminal includes at least one of the following:

[0060] The SCS and CP types of the first CSI-RS are determined to be the SCS and CP types of the currently active downlink BWP;

[0061] The center frequency of the first CSI-RS is determined to be the center frequency of the SSB;

[0062] The center frequency of the first CSI-RS is determined to be the center frequency of the CSI-RS of the serving cell in the MIMO configuration information;

[0063] The center frequency of the first CSI-RS is determined to be the center frequency of the CSI-RS associated with the Physical Downlink Shared Channel (PDSCH) or Physical Downlink Control Channel (PDCCH) in the activated TCI state information.

[0064] In the above embodiments, when the network does not configure the CSI-RS resource information of the serving cell, the existing reference signal resource information can be determined as the first CSI-RS resource information of the serving cell, and used as a benchmark to define the L1 co-frequency measurement based on CSI-RS, thereby achieving the purpose of enhancing the LTM L1 measurement technology based on CSI-RS.

[0065] In conjunction with some embodiments of the first aspect, in some embodiments, the first CSI-RS resource information and the CSI-RS resource information of the measured neighboring cell satisfy a first condition, including:

[0066] The CSI-RS resource information of the neighboring cell being tested is consistent with the first CSI-RS resource information.

[0067] In the above embodiments, the first CSI-RS resource information of the determined serving cell is compared with the CSI-RS resource information of the neighboring cell being measured. If the two are consistent, the measurement is determined to be a co-frequency measurement based on CSI-RS.

[0068] Secondly, embodiments of this disclosure provide a communication method, which is executed by a network device, the method comprising:

[0069] Send first information to the terminal, the first information being used to configure at least one CSI-RS resource information of the serving cell of the terminal;

[0070] The first information is used to determine the first CSI-RS resource information of the serving cell of the terminal;

[0071] Wherein, if the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured meet the first condition, the terminal performs L1 co-frequency measurement.

[0072] In conjunction with some embodiments of the second aspect, in some embodiments, the first CSI-RS resource information includes at least one of the following: the center frequency of the first CSI-RS, the subcarrier spacing (SCS), and the cyclic prefix (CP) type.

[0073] In conjunction with some embodiments of the second aspect, in some embodiments, the SCS and CP types of the at least one CSI-RS are the same.

[0074] In conjunction with some embodiments of the second aspect, in some embodiments, the at least one CSI-RS shares the same center frequency; or, the at least one CSI-RS is configured with different center frequencies.

[0075] In conjunction with some embodiments of the second aspect, in some embodiments, the center frequency of the CSI-RS of the neighboring cell under test is the lowest or highest center frequency of the first CSI-RS.

[0076] In conjunction with some embodiments of the second aspect, in some embodiments, the first CSI-RS resource information and the CSI-RS resource information of the measured neighboring cell satisfy a first condition, including:

[0077] The CSI-RS resource information of the neighboring cell being tested is consistent with the first CSI-RS resource information.

[0078] Thirdly, embodiments of this disclosure provide a terminal, including:

[0079] The first processing module is used to determine the first channel state information-reference signal CSI-RS resource information of the serving cell of the terminal.

[0080] In response to the first condition being met by the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured, it is determined to perform Layer 1 L1 co-frequency measurement.

[0081] Fourthly, embodiments of this disclosure provide a network device, including:

[0082] The second transceiver module is used to send first information to the terminal, wherein the first information is used to configure at least one CSI-RS resource information of the serving cell of the terminal;

[0083] The first information is used to determine the first CSI-RS resource information of the serving cell of the terminal;

[0084] Wherein, if the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured meet the first condition, the terminal performs L1 co-frequency measurement.

[0085] Fifthly, embodiments of this disclosure provide a terminal, including:

[0086] One or more processors;

[0087] The terminal executes the method described in the optional implementation of the first aspect.

[0088] According to a sixth aspect of the embodiments of this disclosure, a network device is provided, comprising:

[0089] One or more processors;

[0090] The network device performs the method described in the optional implementation of the second aspect.

[0091] In a seventh aspect, embodiments of this disclosure provide a communication system including a terminal and a network device, wherein the terminal is used to implement the method described in the optional implementation of the first aspect, and the network device is used to implement the method described in the optional implementation of the second aspect.

[0092] Eighthly, embodiments of this disclosure provide a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the method as described in the optional embodiments of the first or second aspect.

[0093] Ninthly, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method as described in the optional implementation of the first or second aspect.

[0094] In a tenth aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the methods described in an optional implementation of the first or second aspect.

[0095] Eleventhly, embodiments of this disclosure provide a chip or chip system including processing circuitry for performing the method described in an optional implementation of the first or second aspect above.

[0096] Understandably, the aforementioned devices, communication equipment, communication systems, storage media, program products, and computer programs for random access are all used to execute the methods proposed in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here. The communication equipment can be a terminal or a network device.

[0097] This disclosure provides communication methods, apparatus, devices, systems, and storage media.

[0098] In some embodiments, the terms "communication method" and "for random access" can be used interchangeably, the terms "apparatus for random access" and "information processing apparatus" and "communication apparatus" can be used interchangeably, and the terms "information processing system" and "communication system" can be used interchangeably.

[0099] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of the embodiments disclosed. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0100] In each of the disclosed embodiments, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0101] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this disclosure.

[0102] In this disclosure, unless otherwise stated, elements expressed in the singular form, such as "a," "an," "the," "the," "the," "the," "the," "the," "this," etc., can mean "one and only one," or "one or more," "at least one," etc. For example, when using articles such as "a," "an," "the," etc. in translation, the noun following the article can be understood as either a singular or a plural expression.

[0103] In the embodiments of this disclosure, "multiple" refers to two or more.

[0104] In some embodiments, the terms “at least one of”, “at least one of”, “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0105] The descriptions in this disclosure, such as "at least one of A, B, C..." or "A and / or B and / or C...", include the case where any one of A, B, C... exists alone, as well as the case where any combination of any of A, B, C... exists alone. Each case can exist alone. For example, "at least one of A, B, C" includes the cases of A alone, B alone, C alone, A and B combination, A and C combination, B and C combination, and A and B and C combination. For example, A and / or B includes the cases of A alone, B alone, and A and B combination.

[0106] In some embodiments, the notation "in one case A, in another case B" or "in response to one case A, in response to another case B" may include the following technical solutions depending on the situation: A is executed regardless of B, i.e., A is executed in some embodiments; B is executed regardless of A, i.e., B is executed in some embodiments; A and B are selectively executed, i.e., A and B are selected for execution in some embodiments; A and B are both executed, i.e., A and B are executed in some embodiments. The same applies when there are more branches such as A, B, and C.

[0107] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. As another example, if the object being described is "information", then "first configuration" and "second configuration" can be the same information or different information, and their content can be the same or different.

[0108] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0109] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0110] In some embodiments, the terms “greater than,” “greater than or equal to,” “not less than,” “more than,” “more than or equal to,” “not less than,” “higher than,” “higher than or equal to,” “not lower than,” and “above” can be used interchangeably, as can the terms “less than,” “less than or equal to,” “not greater than,” “less than,” “less than or equal to,” “not more than,” “lower than,” “lower than or equal to,” “not higher than,” and “below”.

[0111] In some embodiments, devices, etc., can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as “device”, “equipment”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.

[0112] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.

[0113] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", and "client" can be used interchangeably.

[0114] In some embodiments, the access network device, core network device, or network device can be replaced by a terminal. For example, various embodiments of this disclosure can also be applied to structures that replace communication between the access network device, core network device, or network device and the terminal with communication between multiple terminals (e.g., also referred to as device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the terminal can also be configured to have all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "side").

[0115] For example, uplink channels and downlink channels can be replaced with side channels, and uplink links and downlink links can be replaced with side links.

[0116] In some embodiments, the terms "uplink", "uplink", and "physical uplink" can be used interchangeably, as can the terms "downlink", "downlink", and "physical downlink", as well as the terms "sidelink", "sidelink", "sidelink communication", "sidelink communication", "direct connection", "direct link", "direct communication", and "direct link communication".

[0117] In some embodiments, the terms “downlink control information (DCI),” “downlink (DL) assignment,” “DL DCI,” “uplink (UL) grant,” and “UL DCI” can be used interchangeably.

[0118] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, as can terms such as "physical uplink shared channel (PUSCH)" and "UL data".

[0119] In some embodiments, the determination or judgment can be made by a value represented by 1 bit (0 or 1), or by a true or false value (boolean), or by a comparison of numerical values ​​(e.g., a comparison with a predetermined value), but is not limited thereto.

[0120] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0121] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0122] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0123] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0124] As shown in Figure 1, the communication system 100 includes a terminal 101 and a network device 102.

[0125] In some embodiments, terminal 101 includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0126] In some embodiments, network device 102 may include at least one of access network device and core network device.

[0127] In some embodiments, the access network device is, for example, a node or device that connects a terminal to a wireless network. The network device may include, but is not limited to, at least one of the following in a 5G communication system: evolved Node B (eNB), next-generation eNB (ng-eNB), next-generation Node B (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), wireless backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in a 6G communication system, open RAN, cloud RAN, base station in other communication systems, and access node in a wireless fidelity (WiFi) system.

[0128] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0129] In some embodiments, the access network device may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0130] In some embodiments, the access network device may be a single device, multiple devices, or a group of devices, including all or part of a first network element, a second network element, etc. Network elements may be virtual or physical. Network devices may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0131] In some embodiments, a core network device may be a single device comprising one or more network elements, or it may be multiple devices or a group of devices, each comprising all or part of the aforementioned one or more network elements. Network elements may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), or a Next Generation Core (NGC).

[0132] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions proposed in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions proposed in this disclosure are also applicable to similar technical problems.

[0133] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1 are illustrative. The communication system may include all or some of the main bodies in FIG1, or may include other main bodies outside of FIG1. ​​The number and form of each main body are arbitrary. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0134] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, utilizing other systems for random access, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0135] L1 / L2-triggered mobility measurement based on channel state information-reference signal (CSI-RS) is a technique used in 5G advanced networks to improve mobility management performance.

[0136] • L1 / L2 Triggered Mobility (LTM): LTM is a new mobility management mechanism. It aims to improve user experience by using L1 measurement and reporting, as well as L1 / L2 signaling, to instruct the UE (User Equipment) to perform cell handover, thereby reducing handover latency and downtime.

[0137] • CSI-RS (Channel State Information-Reference Signal): By measuring CSI-RS, detailed channel information, such as channel quality and channel state, can be obtained. In L1 / L2 triggered mobility measurements, CSI-RS measurement results are one of the key bases for triggering cell handover.

[0138] In some embodiments, the procedure for L1 / L2-triggered mobility measurement based on CSI-RS may include:

[0139] 1. Candidate Cell Configuration: The network configures multiple LTM candidate cells for the UE via RRC signaling. These candidate cells are determined based on the L3 measurement reports provided by the UE. The network can select appropriate candidate cells for configuration based on factors such as UE mobility and channel conditions.

[0140] 2. L1 Measurement Request Instruction: The network sends an instruction to the UE, instructing it to perform L1 measurements on a specific candidate cell. Based on the received instruction, the UE performs L1 measurements, such as measuring the L1-RRP (Reference Signal Received Power) of the CSI-RS.

[0141] 3. L1 Measurement Report: The UE reports the L1 measurement results to the network. Based on these L1 measurement results, the network evaluates the channel quality and coverage of candidate cells to determine whether to trigger cell handover.

[0142] 4. Cell Handover Trigger: When the network determines, based on L1 measurement results, that the channel quality of a candidate cell is superior to that of the current serving cell, it sends a handover command to the UE via the MAC control element (CE). Upon receiving the command, the UE performs a cell handover as instructed, thereby achieving fast and low-latency mobility management.

[0143] As can be seen from the above, L1 / L2 triggered mobility measurement technology based on CSI-RS plays an important role in improving the mobility management performance of 5G advanced networks.

[0144] When performing CSI-RS-based measurements, intra-frequency measurements and inter-frequency measurements need to be defined. Currently, L1 intra-frequency measurements (also described as intra-frequency measurements) and inter-frequency measurements (also described as inter-frequency measurements) based on CSI-RS are not defined. This definition will affect the UE measurement process and related requirements.

[0145] L1 measurements based on synchronization / physical broadcast channel blocks (SSBs) have been studied and can be used as a reference for analysis. For intra-frequency and inter-frequency L1 measurements based on SSBs in LTM, the intra-frequency definition is as follows:

[0146] If the center frequency of the serving cell's SSB is the same as that of the neighboring cell's SSB, and the subcarrier spacing of the two SSBs is also the same, then the measurement is defined as an intra-frequency L1-RRSP measurement based on the SSB.

[0147] For L1 measurements based on SSBs within and between frequencies in LTM, the SSB resources of neighboring cells will be configured. For the SSB resources of the serving cell, NW can optionally configure them. This definition compares the center frequency (or center point), subcarrier spacing (SCS), and cyclic prefix (CP) of the SSBs from neighboring and serving cells. If they are equal, the SSB-based measurement is an intra-frequency measurement.

[0148] Since the SSB resources of the serving cell are pre-configured and fixed, the UE always knows the SSB information regardless of whether the NW configures the serving cell's SSB resources for LTM. The UE can then compare the serving cell's SSB resources with those of neighboring cells.

[0149] However, LTM may not have configured CSI-RS resources for the serving cell, or it may have configured multiple CSI-RS with different center frequencies for the serving cell. Therefore, how to define the intra-frequency L1 measurement based on CSI-RS (which can also be described as L1 co-frequency measurement) is an urgent problem to be solved.

[0150] Based on the aforementioned wireless communication system, various embodiments of the communication method proposed in this disclosure will be described in detail below.

[0151] Figure 2 is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2, the communication method is used in a communication system 100, and the method includes:

[0152] S201. The terminal determines the first channel state information - reference signal CSI-RS resource information of its serving cell.

[0153] In some embodiments, the first CSI-RS resource information includes at least one of the following: the center frequency of the first CSI-RS, the subcarrier spacing (SCS), and the cyclic prefix (CP) type.

[0154] In some embodiments, the terminal may determine the first CSI-RS resource information of the serving cell based on configuration information from the network device.

[0155] In some embodiments, the configuration information from the network device does not configure at least one CSI-RS resource information of the serving cell for the terminal.

[0156] In some embodiments, the configuration information may include at least one of the following:

[0157] Resource information for the synchronization signal block (SSB) configured for the terminal;

[0158] Configuration information for Multiple-Input Multiple-Output MIMO;

[0159] Activate Transport Configuration Indicator (TCI) status information;

[0160] Activate the bandwidth section of BWP information.

[0161] In some embodiments, if the network device does not configure at least one CSI-RS resource information of the serving cell for the terminal, the first CSI-RS resource information of the serving cell of the terminal can be determined based on existing configuration information, such as at least one of the above configuration information.

[0162] In some embodiments, determining the first CSI-RS resource information of the serving cell of the terminal includes at least one of the following:

[0163] Determine the SCS and CP types of the first CSI-RS as the SCS and CP types of the currently active downlink BWP;

[0164] The center frequency of the first CSI-RS is determined to be the center frequency of the SSB;

[0165] The center frequency of the first CSI-RS is determined to be the center frequency of the CSI-RS of the serving cell in the MIMO configuration information;

[0166] The center frequency of the first CSI-RS is determined to be the center frequency of the CSI-RS associated with the Physical Downlink Shared Channel (PDSCH) or Physical Downlink Control Channel (PDCCH) in the activated TCI state information.

[0167] In some embodiments, the terminal may determine the SCS of the currently active downlink BWP as the SCS of the first CSI-RS of the serving cell. Optionally, the SCS of the first CSI-RS of the serving cell is the same as the SCS of the currently active downlink BWP.

[0168] In some embodiments, the terminal may determine the CP type of the currently active downlink BWP as the CP type of the first CSI-RS of the serving cell. Optionally, the CP type of the first CSI-RS of the serving cell is the same as the CP type of the currently active downlink BWP.

[0169] In some embodiments, the terminal may determine the center frequency of the SSB configured for the terminal by the network as the center frequency of the first CSI-RS of the serving cell. Optionally, the center frequency of the first CSI-RS of the serving cell and the center frequency of the SSB configured for the terminal are used together.

[0170] In some embodiments, the terminal may determine the center frequency of the CSI-RS of the serving cell in the MIMO configuration information as the center frequency of the first CSI-RS of the serving cell. Optionally, the center frequency of the first CSI-RS of the serving cell is the same as the center frequency of the CSI-RS of the serving cell in the MIMO configuration information.

[0171] In some embodiments, the terminal may determine the center frequency of the CSI-RS associated with the PDSCH or PDCCH in the activated TCI status information as the center frequency of the first CSI-RS of the serving cell. Optionally, the center frequency of the first CSI-RS of the serving cell is the same as the center frequency of the CSI-RS associated with the PDSCH or PDCCH in the activated TCI status information.

[0172] In some embodiments, configuration information from the network device configures at least one CSI-RS resource information of the serving cell for the terminal.

[0173] Optionally, the above configuration information may be the first information of at least one CSI-RS resource information of the serving cell used to configure the terminal.

[0174] In some embodiments, prior to step S201, the following may also be included:

[0175] S200: The terminal receives the first information sent by the network device.

[0176] In some embodiments, the first information is used to configure at least one CSI-RS resource information of the serving cell of the terminal.

[0177] In some embodiments, step S201 may include:

[0178] Based on the first information, determine the first CSI-RS resource information of the serving cell of the terminal.

[0179] In some embodiments, the first CSI-RS resource information of the serving cell of the terminal may be any CSI-RS resource information from at least one of the CSI-RS resource information of the serving cell of the terminal configured in the first information.

[0180] In some embodiments, the first information may further include indication information for indicating the first CSI-RS resource information currently in use.

[0181] In some embodiments, at least one CSI-RS has the same SCS and CP types.

[0182] In some embodiments, when configuring the CSI-RS resource information of the serving cell, the SCS and CP of the CSI-RS are restricted. For example, all CSI-RS of the serving cell configured for the terminal have the same SCS and CP types.

[0183] In some embodiments, at least one CSI-RS shares the same center frequency; or, at least one CSI-RS is configured with a different center frequency.

[0184] In some embodiments, when configuring the CSI-RS resource information of the serving cell, the center frequency of the CSI-RS is not limited, and different center frequencies are allowed to be configured. For example, the center frequencies of all CSI-RS of the serving cell configured for the terminal may be different.

[0185] In some embodiments, when configuring the CSI-RS resource information of the serving cell, the center frequency of the CSI-RS is restricted. For example, all CSI-RS of the serving cell configured for the terminal can share the same center frequency.

[0186] In some embodiments, the center frequency of the CSI-RS of the neighboring cell being tested can be the center frequency of any CSI-RS of the serving cell.

[0187] In some embodiments, the center frequency of the CSI-RS of the neighboring cell being tested is the lowest or highest center frequency of the first CSI-RS.

[0188] S202, the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured meet the first condition, and the terminal determines to perform Layer 1 L1 co-frequency measurement.

[0189] In some embodiments, the first CSI-RS resource information and the CSI-RS resource information of the measured neighboring cell satisfying the first condition may include: the CSI-RS resource information of the measured neighboring cell is consistent with the first CSI-RS resource information.

[0190] In some embodiments, the terminal may compare the first CSI-RS resource information with the CSI-RS resource information of the neighboring cell being measured. If the two are consistent, it is determined to perform L1 co-frequency measurement.

[0191] In some embodiments, if the SCS, CP type, and center frequency of the first CSI-RS of the serving cell are the same as the SCS, CP type, and center frequency of the CSI-RS of the neighboring cell under test, then it is determined to perform L1 co-frequency measurement.

[0192] Optionally, the SCS, CP type, and center frequency of the first CSI-RS can be determined based on the CSI-RS resource information of the serving cell configured for the terminal by the network side.

[0193] Optionally, the SCS, CP type, and center frequency of the first CSI-RS can be determined based on at least one of the following: SSB resource information configured for the terminal, MIMO configuration information, TCI activation status information, and BWP activation information.

[0194] In some embodiments, the names of information, etc., are not limited to those described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", and "data" can be used interchangeably.

[0195] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transmit,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0196] In some embodiments, terms such as "certain," "preset," "default," "set," "indicated," "a certain," "any," and "first" can be used interchangeably. "Certain A," "preset A," "default A," "set A," "indicated A," "a certain A," "any A," and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0197] In some embodiments, terms such as “in the case of,” “when,” “when,” “if,” “if,” etc., can be used interchangeably.

[0198] The method involved in the embodiments of this disclosure may include at least one of steps S200 to S202. For example, step S201 may be implemented as a separate embodiment, and steps S201 and S202 may be implemented as separate embodiments, but are not limited thereto.

[0199] In some embodiments, step S200 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0200] In some embodiments, step S202 is optional, and one or more of these steps may be omitted or substituted in different embodiments.

[0201] Figure 3 is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 3, the communication method can be executed by terminal 101, and the method includes:

[0202] S301. Determine the first CSI-RS resource information of the serving cell of the terminal.

[0203] The optional implementation of step S301 can be found in the optional implementation of step S201 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0204] In some embodiments, the first CSI-RS resource information includes at least one of the following: the center frequency of the first CSI-RS, the subcarrier spacing (SCS), and the cyclic prefix (CP) type.

[0205] In some embodiments, before step S301, the method may further include: receiving first information sent by a network device.

[0206] In some embodiments, the first information is used to configure at least one CSI-RS resource information of the serving cell of the terminal.

[0207] In some embodiments, step S301 may include: determining the first CSI-RS resource information of the serving cell of the terminal based on the first information.

[0208] In some embodiments, at least one CSI-RS has the same SCS and CP types.

[0209] Optionally, the network side configures all CSI-RS of the serving cell for the terminal to have the same SCS and CP types.

[0210] In some embodiments, at least one CSI-RS shares the same center frequency.

[0211] Optionally, all CSI-RS of the serving cell configured for the terminal on the network side can share the same center frequency.

[0212] In some embodiments, at least one CSI-RS is configured with a different center frequency.

[0213] Optionally, the center frequencies of all CSI-RS of the serving cell configured for the terminal on the network side can be different.

[0214] In the above embodiments, the center frequency of the CSI-RS of the neighboring cell under test can be the center frequency of any CSI-RS of the serving cell configured by the network side for the terminal. Optionally, the first CSI-RS of the serving cell can be any CSI-RS of the serving cell configured by the network side for the terminal.

[0215] In some embodiments, step S301 may include: determining the first CSI-RS resource information of the serving cell of the terminal based on at least one of the following:

[0216] Resource information for the synchronization signal block (SSB) configured for the terminal;

[0217] Configuration information for Multiple-Input Multiple-Output MIMO;

[0218] Activate Transport Configuration Indicator (TCI) status information;

[0219] Activate the bandwidth section of BWP information.

[0220] In some embodiments, determining the first CSI-RS resource information of the serving cell of the terminal includes at least one of the following:

[0221] Determine the SCS and CP types of the first CSI-RS as the SCS and CP types of the currently active downlink BWP;

[0222] The center frequency of the first CSI-RS is determined to be the center frequency of the SSB;

[0223] The center frequency of the first CSI-RS is determined to be the center frequency of the CSI-RS of the serving cell of the MIMO configuration information;

[0224] The center frequency of the first CSI-RS is determined to be the center frequency of the CSI-RS associated with the Physical Downlink Shared Channel (PDSCH) or Physical Downlink Control Channel (PDCCH) in the activated TCI state information.

[0225] In some embodiments, the center frequency of the CSI-RS of the neighboring cell being measured can be the lowest or highest center frequency of the first CSI-RS.

[0226] S302. In response to the first condition being met by the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured, determine to perform L1 co-frequency measurement.

[0227] In some embodiments,

[0228] The optional implementation of step S302 can be found in the optional implementation of step S202 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0229] In some embodiments, the first CSI-RS resource information and the CSI-RS resource information of the measured neighboring cell satisfy a first condition, including: the CSI-RS resource information of the measured neighboring cell is consistent with the first CSI-RS resource information.

[0230] Optionally, if the CSI-RS resource information of the neighboring cell being measured is consistent with the first CSI-RS resource information, then L1 co-frequency measurement is determined to be performed.

[0231] Figure 4 is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 4, the method involved in this embodiment is executed by network device 102, and the method includes:

[0232] S401, Send the first message.

[0233] The optional implementation of step S401 can be found in the optional implementation of step S200 in Figure 2 and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0234] In some embodiments, the first information is used to configure at least one CSI-RS resource information of the serving cell of the terminal.

[0235] In some embodiments, the first information is used to determine the first CSI-RS resource information of the serving cell of the terminal;

[0236] In some embodiments, L1 co-frequency measurement is performed if the first CSI-RS resource information and the CSI-RS resource information of the measured neighboring cell satisfy a first condition.

[0237] In some embodiments, if the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured satisfy a first condition, the terminal performs L1 co-frequency measurement.

[0238] In some embodiments, the first CSI-RS resource information includes at least one of the following: the center frequency of the first CSI-RS, the subcarrier spacing (SCS), and the cyclic prefix (CP) type.

[0239] In some embodiments, at least one CSI-RS has the same SCS and CP types.

[0240] In some embodiments, at least one CSI-RS shares the same center frequency; or, at least one CSI-RS is configured with a different center frequency.

[0241] In some embodiments, the center frequency of the CSI-RS of the neighboring cell under test is the lowest or highest center frequency of the first CSI-RS. In some embodiments, the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell under test satisfy a first condition, including: the CSI-RS resource information of the neighboring cell under test is consistent with the first CSI-RS resource information.

[0242] This disclosure also provides an optional implementation for defining intra-frequency L1 measurement (or described as L1 co-frequency measurement) for intra-frequency and inter-frequency L1 measurements based on CSI-RS in LTM.

[0243] If following the traditional SSB-based LTM L1 measurement configuration, the SSB configuration of the serving cell is optional. If the CSI-RS configuration of the serving cell is still optional, it means there are two possibilities:

[0244] Scenario 1: The LTM configuration does not indicate the CSI-RS resources of the serving cell;

[0245] Scenario 2: The LTM configuration indicates the CSI-RS resources of the serving cell.

[0246] For scenario 1, if the CSI-RS resource of the serving cell is not configured in LTM, but an SCS, CP and the center frequency of the serving cell are still required as a reference.

[0247] Generally, there are two solutions to this problem.

[0248] Solution 1: The NW will force the UE to indicate the CSI-RS resources of the serving cell used for L1 measurement in LTM. Then, a general definition for co-frequency based on CSI-RS can be defined.

[0249] Solution 2: The NW can choose to indicate to the UE the CSI-RS resources of the serving cell used for L1 measurements in LTM. Then, co-frequency based on CSI-RS can be defined.

[0250] This disclosure provides an L1 co-frequency measurement method based on Channel State Information Reference Signal (CSI-RS), which may include:

[0251] The network device configures at least one CSI-RS resource information of the serving cell to the user terminal (UE), including the center frequency, subcarrier spacing (SCS), and cyclic prefix (CP) type;

[0252] The UE compares the SCS, CP type, and center frequency of the CSI-RS of the neighboring cell to be measured with the corresponding parameters of the CSI-RS resource information of the serving cell; when the two meet the first condition, the measurement is defined as a co-frequency measurement.

[0253] In some embodiments, the first condition being met includes: the SCS, CP type, and center frequency of the CSI-RS of the tested neighboring cell are the same as the corresponding parameters of the CSI-RS resource information of the serving cell.

[0254] In some embodiments, the center frequency of multiple CSI-RS resources of the serving cell configured by the network device is one of the following:

[0255] a) Different center frequencies are allowed to be configured, and the center frequency of any neighboring cell CSI-RS can be matched with any CSI-RS of the serving cell;

[0256] b) All CSI-RS in the serving cell are limited to sharing the same center frequency;

[0257] c) The center frequency of the neighboring cell CSI-RS is required to match the preset extreme center frequency of the serving cell CSI-RS. The extreme center frequency is either the lowest or the highest center frequency.

[0258] In some embodiments, the network side can configure the center frequency point, SCS, CP, and other information of the CSI-RS resources of the serving cell for L1 measurement of LTM, and send them to the UE (see the relevant embodiments of Option 1 below for details).

[0259] Optionally, the center frequency of all CSI-RS in the serving cell can be the same or different.

[0260] Optionally, all CSI-RSs in the serving cell have the same SCS.

[0261] In some embodiments, the center frequency point, SCS, CP of the configured CSI-RS serves as a reference (or benchmark) for intra-frequency measurements.

[0262] Option 1: The NW will always indicate the CSI-RS resources used for L1 measurements of the serving cell in LTM to the UE, and the NW will configure the SCS, CP and center frequency of the CSI-RS resources.

[0263] Option 1-1:

[0264] Regarding the center frequency: There are no configuration restrictions on the center frequency of all CSI-RS resources in the serving cell; that is, the center frequencies of all CSI-RS resources in the serving cell can be different. The center frequency of any CSI-RS resource in the serving cell will be used as a reference.

[0265] For SCS and CP: SCS is limited, that is: all CSI-RS of the serving cell have the same SCS.

[0266] Example 1:

[0267] A measurement is defined as an intra-frequency L1 measurement based on CSI-RS if the following conditions are met:

[0268] The SCS of the CSI-RS resources of the neighboring cells configured for measurement is the same as the SCS of the CSI-RS resources of the serving cell for L1 measurement indication of LTM.

[0269] The CP type of the CSI-RS resources of the neighboring cells configured for measurement is the same as the CP type of the CSI-RS resources of the serving cell for L1 measurement indication of LTM;

[0270] Applicable to SCS=60KHz;

[0271] The center frequency of the CSI-RS resources of the neighboring cells configured for measurement is the same as the center frequency of any CSI-RS resource of the serving cell indicated for L1 measurement of LTM.

[0272] Option 1-2: Use the lowest or highest center frequency of the serving cell CSI-RS resources as a reference.

[0273] Example 2:

[0274] A measurement is defined as an intra-frequency L1 measurement based on CSI-RS if the following conditions are met:

[0275] The SCS of the CSI-RS resources of the neighboring cells configured for measurement is the same as the SCS of the CSI-RS resources of the serving cell for L1 measurement indication of LTM.

[0276] The CP type of the CSI-RS resources of the neighboring cells configured for measurement is the same as the CP type of the CSI-RS source of the serving cell for L1 measurement indication of LTM;

[0277] Applicable to SCS=60KHz;

[0278] The center frequency of the CSI-RS resources of the neighboring cells configured for measurement is the same as the minimum (or maximum) center frequency of the CSI-RS source of the serving cell for L1 measurement indication of LTM.

[0279] Options 1-3: Configure the center frequency of all CSI-RS resources to the same frequency.

[0280] Example 3:

[0281] A measurement is defined as an intra-frequency L1 measurement based on CSI-RS if the following conditions are met:

[0282] The SCS of the CSI-RS resources of the neighboring cells configured for measurement is the same as the SCS of the CSI-RS resources of the serving cell for L1 measurement indication of LTM.

[0283] The CP type of the CSI-RS resources of the neighboring cells configured for measurement is the same as the CP type of the CSI-RS source of the serving cell for L1 measurement indication of LTM;

[0284] Applicable to SCS=60KHz;

[0285] The center frequency of the CSI-RS resources of the neighboring cells configured for measurement is the same as the center frequency of the CSI-RS source of the serving cell for L1 measurement indication of LTM.

[0286] This disclosure also discloses an L1 co-frequency measurement method based on CSI-RS. When the network side does not configure serving cell CSI-RS resources, the UE performs the following operations:

[0287] Use any of the following reference signal parameters from the serving cell as the comparison benchmark:

[0288] a) The center frequency of the synchronization signal block (SSB), and the SCS and CP types of the currently active downlink bandwidth portion (BWP);

[0289] b) Serving cell CSI-RS configured in Multiple-Input Multiple-Output (MIMO) function;

[0290] c) CSI-RS resources associated with the Physical Downlink Shared Channel (PDSCH) or Physical Downlink Control Channel (PDCCH) in the active Transport Configuration Indicator (TCI) status list;

[0291] Same-frequency measurements must meet the following conditions:

[0292] The SCS and CP types of the neighboring cell CSI-RS match the parameters of the activated BWP, and the center frequency is consistent with the reference.

[0293] In some embodiments, if the network side does not configure CSI-RS resources for the serving cell used for L1 measurements of LTM, the UE may select a reference point for intra-frequency measurements using methods including but not limited to the following:

[0294] Select the center frequency of the SSB resource as a reference;

[0295] The center frequency of the CSI-RS resource configured for MIMO is used as a reference;

[0296] Use the center frequency associated with PDCCH or PDSCH in the activated TCI status list as a reference;

[0297] Activate the CSI-RS configured in the TCI status list;

[0298] SCS and CP are used to activate BWP.

[0299] Optionally, if the network side does not configure CSI-RS resources for the serving cell used for L1 measurement of LTM, the UE can select a reference point for intra-frequency measurement. For details, please refer to the relevant embodiments of option 2 below.

[0300] Option 2: NW can choose to indicate to the UE the CSI-RS resources used for L1 measurements of the serving cell in LTM.

[0301] In some embodiments, if CSI-RS resources for serving cells are configured in the LTM, the relevant scheme is described similarly to option 1 above.

[0302] In some embodiments, if no CSI-RS resources for the serving cell are configured in the LTM, there are several options:

[0303] Option 2-1: Use the center frequency of the SSB as a reference.

[0304] Example 4:

[0305] A measurement is defined as an intra-frequency L1 measurement based on CSI-RS if the following conditions are met:

[0306] The SCS of the CSI-RS resources of the neighboring cells configured for L1 measurement is the same as the SCS of the activated DL BWP;

[0307] The CP type of the CSI-RS resources of the neighboring cells configured for L1 measurement is the same as the CP type of the activated DL BWP;

[0308] Applicable to SCS=60KHz;

[0309] If no CSI-RS resources for the serving cell are configured in LTM, the center frequency of the neighboring cell CSI-RS resources configured for L1 measurement is the same as the center frequency of the serving cell SSB.

[0310] Option 2-2: The center frequency of the CSI-RS configured for measurement in the MIMO function.

[0311] Example 5:

[0312] A measurement is defined as an intra-frequency L1 measurement based on CSI-RS if the following conditions are met:

[0313] The SCS of the CSI-RS resources of the neighboring cells configured for L1 measurement is the same as the SCS of the activated DL BWP;

[0314] The CP type of the CSI-RS resources of the neighboring cells configured for L1 measurement is the same as the CP type of the activated DL BWP;

[0315] Applicable to SCS=60KHz;

[0316] If no CSI-RS resource for the serving cell is configured in LTM, the center frequency of the CSI-RS of the neighboring cell configured for L1 measurement is the same as the center frequency of any CSI-RS resource of the serving cell indicated for L1 measurement in MIMO, such as the CSI-ResourceConfig setting configured for L1-RRRP to activate BWP.

[0317] Option 2-3: The center frequency of the CSI-RS is the center frequency of the QCL-RS indicating the TCI state of the PDCCH or PDSCH, or the center frequency of the source RS in the active TCI state list of the serving cell.

[0318] Example 6:

[0319] The SCS of the CSI-RS resources of the neighboring cells configured for L1 measurement is the same as the SCS of the activated DL BWP;

[0320] The CP type of the CSI-RS resources of the neighboring cells configured for L1 measurement is the same as the CP type of the activated DL BWP;

[0321] If the serving cell's CSI-RS resource is not configured in LTM, the center frequency of the neighboring cell's CSI-RS configured for L1 measurement is the same as the center frequency of the first CSI-RS resource. Optionally, the first CSI-RS is a source RS indicating the TCI status of the PDCCH or PDSCH, or a source RS in the serving cell's active TCI status list. For example, the CSI-ResourceConfig setting configured for the L1-RSRP that activates BWP.

[0322] Options 2-4: Apply BWP activation as a reference for the serving cell.

[0323] Example 7:

[0324] The SCS of the CSI-RS resources of the neighboring cells configured for L1 measurement is the same as the SCS of the activated DL BWP;

[0325] The CP type of the CSI-RS resources of the neighboring cells configured for L1 measurement is the same as the CP type of the activated DL BWP;

[0326] If the serving cell's CSI-RS resources are not configured in LTM, then the center frequency of the neighboring cell's CSI-RS configured for L1 measurement is within the active DL BWP.

[0327] This disclosure also provides an apparatus for implementing any of the above methods. For example, an apparatus is provided that includes units or modules for implementing the steps performed by the terminal in any of the above methods. Alternatively, another apparatus is provided that includes units or modules for implementing the steps performed by a network device (e.g., an access network device, a core network functional node, a core network device, etc.) in any of the above methods.

[0328] It should be understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functions of some or all of the units or modules can be achieved through the design of the hardware circuits. The aforementioned hardware circuits can be understood as one or more processors. For example, in one implementation, the aforementioned hardware circuit is an application-specific integrated circuit (ASIC). The functions of some or all of the aforementioned units or modules are achieved through the design of the logical relationships between the components within the circuit. As another example, in another implementation, the aforementioned hardware circuit can be implemented through a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functions of some or all of the aforementioned units or modules.

[0329] All units or modules of the above devices can be implemented entirely through processor-invoked software, entirely through hardware circuits, or partially through processor-invoked software with the remainder implemented through hardware circuits. In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a Central Processing Unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. These logical relationships are fixed or reconfigurable. For example, the processor may be a hardware circuit implemented using an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. In addition, it can also be hardware circuits designed for artificial intelligence, which can be understood as ASICs, such as Neural Network Processing Units (NPUs), Tensor Processing Units (TPUs), and Deep Learning Processing Units (DPUs).

[0330] Figure 5a is a schematic diagram of the structure of a terminal proposed in an embodiment of this disclosure. As shown in Figure 5a, the terminal may include at least one of a first transceiver module 511, a first processing module 512, etc.

[0331] In some embodiments, the first processing module 512 is used to determine the first channel state information - reference signal CSI-RS resource information of the serving cell of the terminal; in response to the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured satisfying a first condition, it determines to perform Layer 1 co-frequency measurement.

[0332] Optionally, the first transceiver module 511 is used to execute the steps related to transmitting and receiving signaling executed by the terminal 101 in any of the above methods, such as step S200 shown in Figure 2, which will not be described again here.

[0333] Optionally, the first processing module 512 is used to execute the steps related to determining the first CSI-RS resource information of the serving cell of the terminal executed by the terminal 101 in any of the above methods, such as step S202 shown in FIG2, which will not be described again here.

[0334] Figure 5b is a schematic diagram of the network device proposed in an embodiment of this disclosure. As shown in Figure 5b, the network device includes at least one of a second transceiver module 521, a second processing module 522, etc.

[0335] In some embodiments, the second transceiver module 521 is used to send first information to the terminal, the first information being used to configure at least one CSI-RS resource information of the serving cell of the terminal; the first information being used to determine the first CSI-RS resource information of the serving cell of the terminal; wherein, if the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured satisfy a first condition, the terminal performs L1 co-frequency measurement.

[0336] Optionally, the second transceiver module 521 is used to execute the steps related to sending and receiving signaling performed by the network device 102 in any of the above methods, such as at least one of the steps S200 shown in FIG2, which will not be described in detail here.

[0337] Figure 6a is a schematic diagram of the structure of the communication device 6100 proposed in an embodiment of this disclosure. The communication device 6100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 6100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0338] As shown in Figure 6a, the communication device 6100 includes one or more processors 6101. The processor 6101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. The processor 6101 is used to invoke instructions to cause the communication device 6100 to execute any of the above methods.

[0339] In some embodiments, the communication device 6100 further includes one or more transceivers 6103. When the communication device 6100 includes one or more transceivers 6103, the transceiver 6103 performs at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., step S200 shown in FIG. 2, but not limited thereto), and the processor 6101 performs at least one of other steps (e.g., at least one of steps S201 and S202 shown in FIG. 2, but not limited thereto). In optional embodiments, the transceiver may include a receiver and / or a transmitter, which may be separate or integrated together. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., can be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.

[0340] In some embodiments, the communication device 6100 further includes one or more memories 6102 for storing instructions. Optionally, all or part of the memories 6102 may be located outside the communication device 6100.

[0341] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, etc., may be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., may be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., may be used interchangeably.

[0342] Optionally, the communication device 6100 further includes one or more interface circuits 6104, which are connected to the memory 6102. The interface circuits 6104 can be used to receive signals from the memory 6102 or other devices, and can be used to send signals to the memory 6102 or other devices. For example, the interface circuits 6104 can read instructions stored in the memory 6102 and send the instructions to the processor 6101.

[0343] The communication device 6100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 6100 described in this disclosure is not limited thereto, and the structure of the communication device 6100 may not be limited by FIG. 6a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: (1) an independent integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0344] Figure 6b is a schematic diagram of the structure of chip 6200 according to an embodiment of this disclosure. For cases where the communication device 6100 can be a chip or a chip system, please refer to the schematic diagram of chip 6200 shown in Figure 6b, but it is not limited thereto.

[0345] Chip 6200 includes one or more processors 6201. Chip 6200 is used to perform any of the methods described above.

[0346] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 6200 further includes one or more memories 6203 for storing data. Optionally, all or part of the memories 6203 may be located outside of chip 6200. Optionally, interface circuit 6202 is connected to memory 6203, and interface circuit 6202 can be used to receive data from memory 6203 or other devices, and interface circuit 6202 can be used to send data to memory 6203 or other devices. For example, interface circuit 6202 can read data stored in memory 6203 and send the data to processor 6201.

[0347] In some embodiments, the interface circuit 6202 performs at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., step S200 shown in FIG. 2, but not limited thereto). The interface circuit 6202 performing the communication steps such as sending and / or receiving in the above-described method refers, for example, to the interface circuit 6202 performing data interaction between the processor 6201, the chip 6200, the memory 6203, or the transceiver device. In some embodiments, the processor 6201 performs at least one of other steps (e.g., at least one of steps S201 and S202 shown in FIG. 2, but not limited thereto).

[0348] This disclosure also provides a program product that, when executed by the communication device 6100, causes the communication device 6100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0349] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

[0350] The technical solutions described in the embodiments of this disclosure can be combined arbitrarily without conflict.

[0351] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0352] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method of measurement, characterized by, The method is executed by a terminal, and the method includes: Determine the first channel state information - reference signal CSI-RS resource information of the serving cell of the terminal; In response to the first condition being met by the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured, it is determined to perform Layer 1 L1 co-frequency measurement.

2. The method of claim 1, wherein, The first CSI-RS resource information includes at least one of the following: the center frequency of the first CSI-RS, the subcarrier spacing (SCS), and the cyclic prefix (CP) type.

3. The method according to claim 1 or 2, characterized in that, The method further includes: The terminal receives first information sent by a network device, the first information being used to configure at least one CSI-RS resource information of the serving cell of the terminal. The determination of the first CSI-RS resource information of the serving cell of the terminal includes: Based on the first information, the first CSI-RS resource information of the serving cell of the terminal is determined.

4. The method of claim 3, wherein, The SCS and CP types of at least one CSI-RS are the same.

5. The method of claim 4, wherein, The at least one CSI-RS shares the same center frequency; or, the at least one CSI-RS is configured with different center frequencies.

6. The method according to claim 4 or 5, characterized in that, The center frequency of the CSI-RS of the neighboring cell being tested is the lowest or highest center frequency of the first CSI-RS.

7. The method according to claim 1 or 2, characterized in that, The determination of the first CSI-RS resource information of the serving cell of the terminal includes: The first CSI-RS resource information of the serving cell of the terminal is determined based on at least one of the following: Resource information of the synchronization signal block (SSB) configured for the terminal; Configuration information for Multiple-Input Multiple-Output MIMO; Activate Transport Configuration Indicator (TCI) status information; Activate the bandwidth section of BWP information.

8. The method of claim 7, wherein, The determination of the first CSI-RS resource information of the serving cell of the terminal includes at least one of the following: The SCS and CP types of the first CSI-RS are determined to be the SCS and CP types of the currently active downlink BWP; The center frequency of the first CSI-RS is determined to be the center frequency of the SSB; The center frequency of the first CSI-RS is determined to be the center frequency of the CSI-RS of the serving cell in the MIMO configuration information; The center frequency of the first CSI-RS is determined to be the center frequency of the CSI-RS associated with the Physical Downlink Shared Channel (PDSCH) or Physical Downlink Control Channel (PDCCH) in the activated TCI state information.

9. The method according to any one of claims 1-8, characterized in that, The first CSI-RS resource information and the CSI-RS resource information of the measured neighboring cell satisfy the first condition, including: The CSI-RS resource information of the neighboring cell being tested is consistent with the first CSI-RS resource information.

10. A method of measurement, characterized by, The method is performed by a network device, and the method includes: Send first information to the terminal, the first information being used to configure at least one CSI-RS resource information of the serving cell of the terminal; The first information is used to determine the first CSI-RS resource information of the serving cell of the terminal; Wherein, if the first CSI-RS resource information and the CSI-RS resource information of the neighboring cell being measured meet the first condition, the terminal performs L1 co-frequency measurement.

11. The method of claim 10, wherein, The first CSI-RS resource information includes at least one of the following: the center frequency of the first CSI-RS, the subcarrier spacing (SCS), and the cyclic prefix (CP) type.

12. The method according to claim 10 or 11, characterized in that, The SCS and CP types of at least one CSI-RS are the same.

13. The method of claim 12, wherein, The at least one CSI-RS shares the same center frequency; or, the at least one CSI-RS is configured with different center frequencies.

14. The method according to claim 12 or 13, characterized in that, The center frequency of the CSI-RS of the neighboring cell being tested is the lowest or highest center frequency of the first CSI-RS.

15. The method according to any one of claims 10-14, characterized in that, The first CSI-RS resource information and the CSI-RS resource information of the measured neighboring cell satisfy the first condition, including: The CSI-RS resource information of the neighboring cell being tested is consistent with the first CSI-RS resource information.

16. A communication device, characterized by The communication device is used to perform the communication method according to any one of claims 1-9 or any one of claims 10-15.

17. A communication system, characterized by include: A terminal and a network device, wherein the terminal is used to implement the method of any one of claims 1 to 9, and the network device is used to implement the method of any one of claims 10 to 15.

18. A computer storage medium, characterized in that The computer-readable storage medium stores executable instructions that are loaded and executed by a processor to implement the method as claimed in any one of claims 1 to 9, or any one of claims 10 to 15.

19. A program product comprising at least one of a program, instructions, characterized in that When at least one of the programs or instructions is executed by the communication device, it implements the steps of the method according to any one of claims 1-9 or 10-15.

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