Communication method, communication device, communication system, and storage medium

Abstract

A communication method, a communication device, a communication system, and a storage medium. The method comprises: in response to a current serving cell of a terminal satisfying a set condition, performing CSI measurement on sub-bands in a current BWP of the terminal on the basis of a configured CSI RS; determining a set of sub-bands on the basis of a CSI report of the sub-bands, wherein the set of sub-bands comprises one or more combinations of sub-bands of which channel qualities meet the requirements, and the combination of sub-bands comprise consecutive sub-bands; and sending the set of sub-bands to a network device. Sub-bands of which signal qualities meet the requirements are selected and reported to a network device, so that the network device can allocate to a terminal a resource in a sub-band having good quality, thereby providing a high-quality communication service for a user.

Description

Communication methods, communication equipment, communication systems and storage media Technical Field

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

[0002] In mobile scenarios, there may be situations where the Synchronization Signal Block (SSB) has good signal quality, but the Tracking Reference Signal (TRS) under the corresponding full bandwidth has poor signal quality. Currently, most networks decide whether to grant access and manage mobility based on the quality of the SSB signal. However, the TRS is actually what truly reflects the quality of the service channel. Therefore, providing users with high-quality communication services when the SSB signal quality is good but the TRS signal quality is poor becomes a problem that needs to be solved. Summary of the Invention

[0003] This disclosure provides a communication method, communication device, communication system, and storage medium. By selecting sub-bands with satisfactory signal quality and reporting them to a network device, the network device can allocate resources within the sub-bands with better quality to the terminal, thereby providing users with higher quality communication services.

[0004] According to a first aspect of the present disclosure, a communication method is provided, the method being executed by a terminal, the method comprising:

[0005] In response to the fact that the current serving cell of the terminal meets the set conditions, the CSI measurement of the sub-band of the current cell bandwidth of the terminal is performed based on the configured Channel State Information Reference Signal (CSI RS).

[0006] Based on the subband CSI report, a subband set is determined, wherein the subband set includes one or more subband combinations that meet the signal quality requirements, and the subband combination includes consecutive subbands;

[0007] Send the subband set to the network device.

[0008] According to a second aspect of the present disclosure, a communication method is provided, the method being performed by a network device, the method comprising:

[0009] The receiving terminal sends a set of subbands, the set of subbands including one or more combinations of subbands that meet the signal quality requirements, the subband combinations being determined by the terminal based on the CSI report of the subbands, and the subband combinations including consecutive subbands.

[0010] According to a third aspect of the embodiments of this disclosure, a terminal is provided, comprising:

[0011] The processing module is configured to, when the current serving cell of the terminal meets the set conditions, perform CSI measurement on the subband of the current cell bandwidth based on the configured Channel State Information Reference Signal (CSI RS), and determine the subband set based on the subband CSI report, wherein the subband set includes one or more subband combinations that meet the signal quality requirements, and the subband combination includes consecutive subbands.

[0012] The transceiver module is used to send the subband set to the network device.

[0013] According to a fourth aspect of the embodiments of this disclosure, a network device is provided, comprising:

[0014] A transceiver module is used to receive a set of subbands sent by a terminal. The set of subbands includes one or more combinations of subbands that meet the signal quality requirements. The subband combinations are determined by the terminal based on the CSI report of the subbands. The subband combinations include consecutive subbands.

[0015] According to a fifth aspect of the embodiments of this disclosure, a communication device is provided, comprising:

[0016] One or more processors;

[0017] The processor is configured to invoke instructions to execute the method described in the first aspect above, or to execute the method described in the second aspect above.

[0018] A sixth aspect of this disclosure provides a communication system including a terminal and a network device, wherein the terminal is configured to perform the method described in the first aspect above, and the network device is configured to perform the method described in the second aspect above.

[0019] A seventh aspect of this disclosure provides a storage medium storing instructions that, when executed on a communication device, cause the communication device to perform the method described in the first aspect above, or to perform the method described in the second aspect above.

[0020] An eighth aspect of this disclosure provides a computer program product including a computer program that, when executed by a processor, implements the method described in the first aspect above, or implements the method described in the second aspect above. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings required for the description of the embodiments are introduced below. The following drawings are only some embodiments of this disclosure and do not impose specific limitations on the protection scope of this disclosure.

[0022] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure;

[0023] Figures 2A-2B are interactive schematic diagrams of the communication method provided according to embodiments of the present disclosure;

[0024] Figures 3A-3B are schematic flowcharts illustrating a communication method according to embodiments of the present disclosure;

[0025] Figure 4 is a 5GS illustrated according to an embodiment of the present disclosure;

[0026] Figure 5A is a schematic diagram of the structure of the terminal proposed in an embodiment of this disclosure;

[0027] Figure 5B is a schematic diagram of the structure of the network device proposed in an embodiment of this disclosure;

[0028] Figure 6A is a schematic diagram of the structure of the communication device proposed in an embodiment of this disclosure;

[0029] Figure 6B is a schematic diagram of the chip structure proposed in an embodiment of this disclosure. Detailed Implementation

[0030] This disclosure provides communication methods, communication devices, communication systems, and storage media.

[0031] In a first aspect, embodiments of this disclosure provide a communication method, the method being executed by a terminal, the method comprising:

[0032] In response to the fact that the current serving cell of the terminal meets the set conditions, the CSI measurement of the sub-band of the current cell bandwidth of the terminal is performed based on the configured Channel State Information Reference Signal (CSI RS).

[0033] Based on the subband CSI report, a subband set is determined, wherein the subband set includes one or more subband combinations that meet the signal quality requirements, and the subband combination includes consecutive subbands;

[0034] Send the subband set to the network device.

[0035] In the above embodiments, the terminal can perform CSI measurements on the subbands within the BWP and determine the set of subbands with better signal quality based on the subband CSI report. After determining the set of subbands, the terminal can send it to the network device, so that the network device can select the subbands with better quality to configure frequency domain resources for the terminal. This ensures that the frequency domain resources for communication between the terminal and the network device are of good quality, and can provide users with higher quality communication services.

[0036] In conjunction with some embodiments of the first aspect, in some embodiments, the signal quality of the Tracking Reference Signal (TRS) of the serving cell is lower than the signal quality of the SSB of the serving cell.

[0037] In conjunction with some embodiments of the first aspect, in some embodiments, the above method further includes: determining a first signal quality parameter of the serving cell's TRS; determining a second signal quality parameter of the serving cell's SSB; and determining that the serving cell meets a set condition in response to the first signal quality parameter being lower than the second signal quality parameter and the difference between the two being greater than a set value.

[0038] In the above embodiments, by comparing the signal conditions of the serving cell's SSB and TRS, it is determined whether the serving cell is in a specific scenario, providing a reference for the subsequent CSI measurement of the current cell's bandwidth by the terminal.

[0039] In conjunction with some embodiments of the first aspect, in some embodiments the above method further includes: receiving first information, the first information being used to configure at least one of the TRS and CSI RS of the serving cell.

[0040] In the above embodiments, reference information is configured through the first information to realize the CSI measurement of the sub-band, thereby determining the CSI report of the sub-band and providing a basis for the subsequent selection of high-quality sub-bands.

[0041] In conjunction with some embodiments of the first aspect, in some embodiments, sending the subband set to the network device includes one of the following operations:

[0042] The registration process is triggered, and the subband set is sent to the network device using the terminal's capability information;

[0043] The subband set is sent to the network device via message 3 during the random access process;

[0044] The registration process is triggered by sending the subband set to the network device via a non-access stratum (NAS) message.

[0045] The registration process is triggered by sending the subband set to the network device using the second information carrying the NAS message.

[0046] In conjunction with some embodiments of the first aspect, in some embodiments, the above method further includes: determining a bitmap of the subband set; sending the bitmap to the network device, the bitmap carrying at least one of the capability information, the message 3, the NAS message, and the second information.

[0047] In conjunction with some embodiments of the first aspect, in some embodiments the above method further includes carrying the bitmap in the Media Access Control Protocol Data Unit (MAC PDU) in the payload of the message 3.

[0048] In some embodiments, after determining the subband set, it can be sent to the network device so that the network device can understand the terminal's capabilities and allocate high-quality frequency domain resources to the terminal, thereby ensuring the quality of communication services. Furthermore, reporting via a bitmap allows the network device to more directly obtain subbands with better signal quality, improving the rate of resource allocation.

[0049] In conjunction with some embodiments of the first aspect, in some embodiments, after sending the subband set to the network device, the method further includes:

[0050] Receive resource configuration information, which includes frequency domain resources within the sub-band combination.

[0051] In some embodiments, the network device allocates frequency domain resources to the terminal within the reported subband group, thereby enabling the terminal to communicate with the network device on the allocated frequency domain resources of better quality, reducing the probability of information loss and improving the quality of communication services.

[0052] Secondly, embodiments of this disclosure provide a communication method, which is executed by a network device, the method comprising:

[0053] The receiving terminal sends a set of subbands, the set of subbands including one or more combinations of subbands that meet the signal quality requirements, the subband combinations being determined by the terminal based on the CSI report of the subbands, and the subband combinations including consecutive subbands.

[0054] In conjunction with some embodiments of the second aspect, in some embodiments the above method further includes:

[0055] Send first information, which is used to configure at least one of the TRS and CSI RS of the serving cell.

[0056] In conjunction with some embodiments of the second aspect, in some embodiments, the subband set transmitted by the receiving terminal includes one of the following operations:

[0057] Receive capability information sent by the terminal during the registration process, wherein the capability information carries the subband set;

[0058] Message 3 is received during the random access process, wherein message 3 carries the subband set;

[0059] Receive the NAS message sent by the terminal during the registration process, wherein the NAS message carries the subband set;

[0060] The terminal receives second information sent during the registration process, wherein the second information is used to carry NAS messages and carries the subband set.

[0061] In conjunction with some embodiments of the second aspect, in some embodiments the above method further includes:

[0062] Receive a bitmap of the subband set, the bitmap carrying at least one of the capability information, the message 3, the NAS message and the second information.

[0063] In conjunction with some embodiments of the second aspect, in some embodiments the above method further includes:

[0064] The bitmap is determined from the MAC PDU in the payload of message 3.

[0065] In conjunction with some embodiments of the second aspect, in some embodiments, after the set of subbands sent by the receiving terminal, the system further includes:

[0066] Send resource configuration information, which includes the frequency domain resources within the sub-band combination configured for the terminal.

[0067] Thirdly, embodiments of this disclosure provide a terminal, the terminal comprising:

[0068] The processing module is configured to, when the current serving cell of the terminal meets the set conditions, perform CSI measurement of the subband of the current cell bandwidth based on the configured CSI RS, and determine the subband set based on the subband CSI report, wherein the subband set includes one or more subband combinations that meet the signal quality requirements, and the subband combination includes consecutive subbands.

[0069] The transceiver module is used to send the subband set to the network device.

[0070] In conjunction with some embodiments of the third aspect, in some embodiments, the signal quality of the Tracking Reference Signal (TRS) of the serving cell is lower than the signal quality of the Synchronization Signal / Physical Broadcast Channel Block (SSB) of the serving cell.

[0071] In conjunction with some embodiments of the third aspect, in some embodiments, the processing module is further configured to determine a first signal quality parameter of the serving cell's TRS; determine a second signal quality parameter of the serving cell's SSB; and, in response to the first signal quality parameter being lower than the second signal quality parameter and the difference between the two being greater than a set value, determine that the serving cell meets a set condition.

[0072] In conjunction with some embodiments of the third aspect, in some embodiments, the transceiver module is further configured to receive first information, the first information being used to configure at least one of the TRS and CSI RS of the serving cell.

[0073] In conjunction with some embodiments of the third aspect, in some embodiments, the transceiver module is also used for one of the following operations:

[0074] The registration process is triggered, and the subband set is sent to the network device using the terminal's capability information;

[0075] The subband set is sent to the network device via message 3 during the random access process;

[0076] The registration process is triggered by sending the subband set to the network device via a non-access stratum (NAS) message.

[0077] The registration process is triggered by sending the subband set to the network device using the second information carrying the NAS message.

[0078] In conjunction with some embodiments of the third aspect, in some embodiments, the processing module is further configured to determine a bitmap of the subband set;

[0079] The transceiver module is further configured to send the bitmap to the network device, the bitmap being carried on at least one of the capability information, the message 3, the NAS message, and the second information.

[0080] In conjunction with some embodiments of the third aspect, in some embodiments, the transceiver module is also configured to carry the bitmap in the Media Access Control Protocol Data Unit (MAC PDU) in the payload of the message 3.

[0081] In conjunction with some embodiments of the third aspect, in some embodiments, the transceiver module is further configured to receive resource configuration information after sending the subband set to the network device, the resource configuration information being used to configure frequency domain resources within the subband combination.

[0082] Fourthly, embodiments of this disclosure provide a network device, the network device comprising:

[0083] A transceiver module is used to receive a set of subbands sent by a terminal. The set of subbands includes one or more combinations of subbands that meet the signal quality requirements. The subband combinations are determined by the terminal based on the CSI report of the subbands. The subband combinations include consecutive subbands.

[0084] In conjunction with some embodiments of the fourth aspect, in some embodiments, the transceiver module is further configured to send first information, the first information being used to configure at least one of the TRS and CSI RS of the serving cell.

[0085] In conjunction with some embodiments of the fourth aspect, in some embodiments, the transceiver module is also configured to perform one of the following operations:

[0086] Receive capability information sent by the terminal during the registration process, wherein the capability information carries the subband set;

[0087] Message 3 is received during the random access process, wherein message 3 carries the subband set;

[0088] Receive the NAS message sent by the terminal during the registration process, wherein the NAS message carries the subband set;

[0089] The terminal receives second information sent during the registration process, wherein the second information is used to carry NAS messages and carries the subband set.

[0090] In conjunction with some embodiments of the fourth aspect, in some embodiments, the transceiver module is further configured to receive a bitmap of the subband set, the bitmap being carried on at least one of the capability information, the message 3, the NAS message, and the second information.

[0091] In conjunction with some embodiments of the fourth aspect, in some embodiments, the processing module is configured to determine the bitmap from the MAC PDU in the payload of the message 3.

[0092] In conjunction with some embodiments of the fourth aspect, in some embodiments, the transceiver module is further configured to send resource configuration information after receiving a subband set sent by the terminal, the resource configuration information including configuring frequency domain resources within the subband combination for the terminal.

[0093] Fifthly, embodiments of this disclosure provide a communication device, which includes one or more processors; wherein the communication device is used to execute the first aspect and optional implementations of the first aspect, or to execute the second aspect and optional implementations of the second aspect.

[0094] In a sixth aspect, embodiments of this disclosure provide a communication system comprising: a terminal and a network device; wherein the terminal is configured to perform the method described in the first aspect and optional implementations thereof, and the network device is configured to perform the method described in the second aspect and optional implementations thereof.

[0095] In a seventh aspect, 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 described in the first aspect and its optional implementations, or to perform the method described in the second aspect and its optional implementations.

[0096] Eighthly, embodiments of this disclosure provide a program product that, when executed by a communication device, causes the communication device to perform the method described in the first aspect and its optional implementations, or to perform the method described in the second aspect and its optional implementations.

[0097] In a ninth aspect, embodiments of this disclosure provide a computer program that, when run on a computer, causes the computer to perform the method as described in the first aspect and optional implementations of the first aspect, or to perform the method as described in the second aspect and optional implementations of the second aspect.

[0098] In a tenth aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry configured to perform the method described according to the first aspect and optional implementations thereof, or configured to perform the method described according to the second aspect and optional implementations thereof.

[0099] It is understood that the aforementioned terminals, network devices, communication devices, communication systems, storage media, program products, computer programs, chips, or chip systems 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.

[0100] This disclosure provides a communication method. In some embodiments, the terms communication method, measurement configuration method, configuration method, etc., can be used interchangeably; the terms measurement configuration device, configuration device, communication device, etc., can be used interchangeably; and the terms measurement configuration system, configuration system, communication system, etc., can be used interchangeably.

[0101] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. 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.

[0102] 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.

[0103] 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 scope of this disclosure.

[0104] 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.

[0105] In the embodiments disclosed herein, "multiple" refers to two or more.

[0106] In some embodiments, the terms “at least one of”, “one or more”, “a plurality of”, “multiple”, etc., may be used interchangeably.

[0107] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0108] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0109] 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. Similarly, if the object being described is "information", then "first information" and "second information" can be the same information or different information, and their content can be the same or different.

[0110] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0111] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0112] 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”.

[0113] In some embodiments, the apparatus and device may be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. In some cases, they may also be understood as "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", "body", etc.

[0114] In some embodiments, "network" can be interpreted as devices included in the network, such as access network devices, core network devices, etc.

[0115] In some embodiments, "access network device (AN device)" may also be referred to as "radio access network device (RAN device)," "base station (BS)," "radio base station," or "fixed station." In some embodiments, it may also be understood as "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," "serving cell," "carrier," "component carrier," or "bandwidth part (BWP)."

[0116] In some embodiments, "terminal" or "terminal device" may be referred to as "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," "client," etc.

[0117] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0118] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0119] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure.

[0120] As shown in Figure 1, the communication system 100 may include a terminal 101 and a network device 102.

[0121] In some embodiments, terminal 101 includes, for example, 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, but is not limited thereto.

[0122] In some embodiments, network device 102 may include at least one of access network device and core network device.

[0123] In some embodiments, the access network device 102 may be a node or device that connects a terminal to a wireless network. The access network device may include at least one of the following in a 5G communication system: an evolved Node B (eNB), a next-generation eNB (ng-eNB), a next-generation Node B (gNB), a node B (NB), a home node B (HNB), a home evolved node B (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open RAN, a cloud RAN, a base station in other communication systems, and an access node in a Wi-Fi system, but is not limited thereto.

[0124] 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 access 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.

[0125] 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 access 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.

[0126] In some embodiments, the core network equipment may be a single device, including a first network element 103, a second network element, etc., or it may be multiple devices or a group of devices, each including all or part of the first network element, the second network element, etc. Network elements may be virtual or physical. The core network may include, for example, at least one of the Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).

[0127] 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.

[0128] The following embodiments of this disclosure can be applied to the communication system shown in FIG1, or some of the subjects, but are not limited thereto. The subjects shown in FIG1 are illustrative. The communication system may include all or some of the subjects in FIG1, or may include other subjects other than those in FIG1. ​​The number and form of each subject are arbitrary. Each subject may be physical or virtual. The connection relationship between the subjects is illustrative. The subjects may not be connected or may be connected. The connection may be in any way, such as direct connection or indirect connection, wired connection or wireless connection.

[0129] 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, systems utilizing other communication methods, 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).

[0130] In real-world mobile communication scenarios, there may be situations where the SSB signal is good, but the TRS signal under the corresponding full bandwidth is poor. For example, signal quality can be compared using the Reference Signal Received Power (RSRP) and Signal-to-Noise Ratio (SNR) for both the SSB and TRS. While network devices often determine access and mobility management based on the SSB signal quality, the TRS truly reflects service quality. In such cases, if the UE enters the coverage area of ​​an associated cell, it is difficult for the UE to leave the cell, resulting in low-rate data services. In these situations, a series of optimization measures can be taken to improve communication service quality and user experience through bandwidth reduction.

[0131] In some embodiments, the network device primarily targets the UE by lowering the threshold values ​​for the serving cell's RSRP, Reference Signal Received Quality (RSRQ), and SNR in the measurement report. This enables the network device to quickly hand over the UE from the poorly serving cell to a neighboring cell. Optionally, the network device can quickly hand over the UE from the poorly serving cell to a neighboring cell based on the measurement report and A3 events. This allows the UE to escape the bad cell and discard the serving cell's Physical Cell Identifier (PCI), thereby preventing the UE from re-entering the bad cell.

[0132] In areas with sparse network signal coverage, the above optimization methods may cause UE network loss or worsen signal quality, failing to guarantee UE network connectivity or access to basic data services. These optimization schemes primarily rely on good network signal coverage and good neighboring cell signal quality. In areas with insufficient signal coverage, or when neighboring cells also have poor signal quality, they cannot effectively improve communication service quality.

[0133] Figure 2A is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2A, the present disclosure relates to a communication method for a communication system, the communication system including a terminal and a network device, the method including:

[0134] Step S2101: The network device sends the first information.

[0135] In some embodiments, the network device may send first information to the terminal; alternatively, the terminal may receive the first information sent by the network device.

[0136] In some embodiments, the first information is used to configure at least one of the TRS and Channel State Information Reference Signal (CSI RS) of the serving cell where the terminal is located.

[0137] In some embodiments, the first information is used to configure the TRS of the serving cell where the terminal is located.

[0138] In some embodiments, the first information is used to configure the CSI RS of the serving cell where the terminal is located.

[0139] In some embodiments, the first information is used to configure the TRS and CSI RS of the serving cell where the terminal is located.

[0140] In some embodiments, the first information may include at least one of Radio Resource Control (RRC), Media Access Control (MAC) Element (CE), and Downlink Control Information (DCI).

[0141] In some embodiments, the network device sends RRC signaling to the terminal, the RRC signaling carrying at least one of the TRS and CSI RS configured for the terminal. Optionally, the RRC signaling includes the index value corresponding to the TRS and / or CSI RS configured for the terminal.

[0142] In some embodiments, the network device may send RRC signaling to the terminal, the RRC signaling including multiple TRS and / or multiple CSI RS. Further, the network device may send MAC CE signaling to the terminal, indicating or activating the configured TRS and / or CSI RS. Optionally, the MAC CE signaling carries the index value corresponding to the TRS and / or CSI RS configured for the terminal.

[0143] In some embodiments, the network device sends DCI signaling to the terminal, the DCI signaling carrying at least one of a TRS and a CSI RS configured for the terminal. Optionally, the DCI signaling includes the index value corresponding to the TRS and / or CSI RS configured for the terminal.

[0144] In some embodiments, the network device may send RRC signaling to the terminal, which includes multiple TRS and / or multiple CSI RS. Further, the network device may send DCI signaling to the terminal, indicating or activating the configured TRS and / or CSI RS. Optionally, the DCI signaling carries the index value corresponding to the TRS and / or CSI RS configured for the terminal.

[0145] In step S2102, the terminal determines the first signal quality parameters of the serving cell's TRS and the second signal quality parameters of the serving cell's SSB.

[0146] In some embodiments, the network device can send measurement configuration information to the terminal via RRC signaling. The terminal can then measure and calculate the signal quality of TRS and SSB based on the measurement configuration information to obtain the first signal quality parameter of TRS and the second signal quality parameter of SSB.

[0147] In some embodiments, the first signal quality parameter includes one or more of RSRP, RSRQ, and SNR.

[0148] In some embodiments, the second signal quality parameter includes one or more of RSRP, RSRQ, and SNR.

[0149] In some embodiments, the first signal command parameter and the second signal quality parameter include at least one quality parameter of the same type to facilitate a comparison of the signal quality of the TRS and SSB based on the same type of quality parameter to determine the quality of the two signals. For example, the first signal quality parameter includes RSRP, RSRQ, and SNR. The second signal quality parameter includes RSRP, RSRQ, and SNR. The signal quality of the TRS and SSB can be compared based on any one of RSRP, RSRQ, and SNR to determine the quality of the two signals. As another example, the first signal quality parameter includes RSRP and RSRQ. The second signal quality parameter includes RSRP and SNR. In this case, the signal quality of the TRS and SSB can be compared based on RSRP to determine the quality of the two signals.

[0150] In some embodiments, a quality parameter threshold value can be pre-configured. The terminal can compare the signal quality of TRS and SSB using a first signal command parameter, a second signal quality parameter, and the quality parameter threshold value to determine the quality of the two signals. For example, by comparing the first signal command parameter and the second signal quality parameter with the quality parameter threshold value respectively, the magnitude relationship and offset value between the first signal command parameter and the quality parameter threshold value, as well as the magnitude relationship and offset value between the second signal command parameter and the quality parameter threshold value, can be obtained. Furthermore, based on the above magnitude relationship and offset value, the signal quality of TRS and SSB is compared to determine the quality of the two signals. For example, if the second signal quality parameter is greater than the quality parameter threshold value and the first signal quality parameter is less than the quality parameter threshold value, it can be determined that the signal quality of SSB is higher than that of TRS. As another example, if both the first and second signal quality parameters are greater than the quality parameter threshold value, but the offset value of the first signal quality parameter is greater than the second offset value of the second signal quality parameter, it can be determined that the signal quality of SSB is higher than that of TRS.

[0151] Step S2103: In response to the serving cell meeting the set conditions, perform subband CSI measurement on the terminal's current BWP based on the configured CSI RS.

[0152] In some embodiments, the setting condition may include: the signal quality of the serving cell's TRS is lower than the signal quality of the serving cell's Synchronization Signal Block (SSB). If the serving cell meets the setting condition, the serving cell is a bad cell with good SSB quality but poor TRS quality.

[0153] In some embodiments, a first signal quality parameter and a second signal quality parameter are compared to determine whether the first signal quality parameter is lower than the second signal quality parameter. If the first signal quality parameter is lower than the second signal quality parameter, it indicates that the signal quality of the SSB is better, while the signal quality of the TRS is worse. Further, the difference between the first signal quality parameter and the second signal quality parameter is obtained. If the difference is greater than a set value, it is determined that the serving cell meets the set conditions. In other words, if the first signal quality parameter of the TRS is lower than the second signal quality parameter of the SSB, and the difference between the two is greater than a set value, it is determined that the serving cell meets the set conditions.

[0154] For example, the first signal quality parameter of TRS can be RSRP 1, and the second signal quality parameter of SNR can be RSRP 2. If RSRP 1 is lower than RSRP 2, and the difference between RSRP 1 and RSRP 2 is greater than 10dB, the serving cell can be identified as a bad cell.

[0155] In some embodiments, the terminal can perform CSI measurements on the subbands within the current Bandwidth Part (BWP) based on the configured CSI RS to obtain a CSI report for the subbands.

[0156] In some embodiments, the current BWP of the terminal may be determined based on the configuration or indication information of the network device.

[0157] In some embodiments, the current BWP of the terminal can be determined based on protocol agreements.

[0158] In some embodiments, the BWP is determined based on multiple Physical Resource Blocks (PRBs), where the width of the BWP is determined by the number of PRBs. The BWP can be divided into multiple Subbands, where a Subband is a smaller spectrum region within the BWP. The size of a Subband can be configured according to the width of the BWP. Configuring the Subband size affects the granularity and flexibility of resource allocation, allowing the network to adjust the size of the subbands according to actual needs, thereby optimizing spectrum utilization and improving communication efficiency. For example, when spectrum resources are limited, using a smaller Subband can improve the granularity of resource allocation; while when spectrum resources are abundant, using a larger Subband can reduce control signaling overhead and improve spectrum utilization.

[0159] In some embodiments, the configuration rules for the size of the Subband are as follows:

[0160] When the BWP width is between 24 and 72 PRBs, the Subband size can be configured to 4 or 8 PRBs. When the BWP width is between 73 and 144 PRBs, the Subband size can be configured to 8 or 16 PRBs. When the BWP width is between 145 and 275 PRBs, the Subband size can be configured to 16 or 32 PRBs.

[0161] For example, if a BWP has 273 PRBs, the corresponding Subband can be divided into multiple Subbands for that BWP by each RB16 or 32.

[0162] Step S2104: Determine the subband set based on the subband CSI report.

[0163] In some embodiments, the subband CSI report includes measurements for each subband within the BWP.

[0164] In some embodiments, the measurement results of the Subband may include, but are not limited to, one or more of the Subband's RSRP, RSRQ, and SNR.

[0165] In some embodiments, threshold values ​​corresponding to RSRP, RSRQ, and SNR can be agreed upon through network configuration and protocol. Furthermore, the RSRP, RSRQ, and / or SNR of the Subband can be compared with their respective threshold values ​​to determine whether the signal quality of the Subband meets the requirements.

[0166] In some embodiments, the subband set includes a combination of subbands that meet the signal quality requirements.

[0167] In some embodiments, the subband set includes multiple subband combinations that meet the signal quality requirements.

[0168] Network devices can determine a minimum number of redundancy blocks (RBs) for resource allocation; for example, the minimum number of RBs can be 4 or 6. In some embodiments, to ensure that the network device can allocate consecutive frequency domain resources to terminals according to the minimum number of RBs, the subbands within a subband combination need to be multiple consecutive subbands.

[0169] In some embodiments, the subbands whose signal quality meets the requirements can be determined from a plurality of subbands within the BWP based on one or more of the subband's RSRP, RSRQ, and SNR. Optionally, these subbands whose signal quality meets the requirements can be identified as subbands within the subband set.

[0170] Optionally, consecutive subbands can be determined from subbands that meet the signal quality requirements. For example, a BWP may include 10 subbands, labeled Subband 0 to Subband 9. Based on the subband CSI report, the terminal determines the subbands that meet the signal quality requirements from these 10 subbands (Subband 0 to Subband 9). In some cases, interference may occur in the middle of the BWP, resulting in two consecutive usable parts. In this case, the subbands that meet the signal quality requirements may include Subband 0, Subband 1, Subband 2, Subband 3, Subband 6, Subband 7, Subband 8, and Subband 9. Further, the terminal can identify Subband 0, Subband 1, Subband 2, and Subband 3 as consecutive subbands, and can obtain subband combination 1 from Subband 0, Subband 1, Subband 2, and Subband 3. The terminal can identify Subband6, Subband7, Subband8, and Subband9 as consecutive Subbands, and can combine them into Subband Combination 2. The subband set can include Subband Combination 1 and Subband Combination 2. It is understood that two Subband combinations within a subband set are not consecutive, while Subbands within a Subband combination are consecutive.

[0171] It is understandable that the poor signal quality of TRS is often caused by interference. Subband combinations that can be screened through subband CSI reports are often located near the SSB frequency domain because the signal quality of SSB is better.

[0172] Step S2105: Determine the bitmap of the subband set.

[0173] In some embodiments, after determining the subband set, the bitmap of the BWP containing the subband can be configured according to the identifier of each subband in the subband set.

[0174] In some embodiments, the identifier of a Subband can be a partition number within a BWP, or an index of the Subband, etc.

[0175] In some embodiments, during bitmap configuration, the position of a Subband within a subband set on the bitmap can be determined. Further, the position of the Subband within the subband set on the bitmap is set to a first value, and other positions on the bitmap are set to a second value. That is, the positions of other Subbands within the BWP that do not belong to the subband set are set to the second value on the bitmap. The first value indicates that the Subband is a Subband within the subband set. For example, the first value can be "1" and the second value can be "0"; or the first value can be "0" and the second value can be "1".

[0176] For example, the BWP includes a Subband, and the subband set includes consecutive Subband2, Subband3, Subband4, Subband7, Subband8, and Subband9. The bitmap can be configured as "0011100111". This bitmap can indicate to the network device that Subband2, Subband3, Subband4, Subband7, Subband8, and Subband9 are two consecutive subband combinations that meet the signal quality requirements.

[0177] Step S2106: The terminal sends a bitmap of the subband set to the network device.

[0178] In some embodiments, the terminal triggers a registration process, sending a bitmap of the subband set to the network device using the terminal's capability information. When the terminal's capabilities change (e.g., the terminal disables a certain frequency band, a certain wireless function, or the subband signal changes), it needs to notify the network device to update. The terminal can trigger a registration process to send a bitmap of the subband set to the network device based on its capability information. Optionally, in the scenario where the aforementioned capabilities change, the terminal can carry a 5GS Update Type Information Element (IE) in the Registration Request message, setting the NG-RAN Radio Capability Update Needed (NG-RAN-RCU) flag bit 2 to 1, indicating a UE radio capability update requirement. Optionally, a value of "0" for NG-RAN-RCU indicates that the UE's radio capability has not been updated, while a value of "1" indicates that the UE's radio capability has been updated. After receiving the aforementioned wireless capability update request, the network device can send a reporting feedback or indication to the terminal. The terminal can send capability information (UE capability) to the network device, carrying a bitmap within this capability information; that is, it can indicate the bitmap of consecutive subbands based on the UE capability. Optionally, the network device can receive the capability information sent by the terminal and thus obtain the bitmap indicating the subband set.

[0179] In some embodiments, the terminal may initiate a random access procedure and send a subband set to the network device via message 3 (msg 3) during the random access procedure. Optionally, a bitmap of the subband set may be carried in the Medium Access Control Protocol Data Unit (MAC PDU) within the payload of msg 3.

[0180] In some embodiments, the terminal may trigger a registration process and send a subband set to the network device via a Non-Access Stratum (NAS) message. Optionally, the NAS message may be a registration request. The terminal passes a bitmap to the RRC layer via the NAS layer, and the RRC layer further encapsulates the bitmap in an RRC message and sends it to the network device via the wireless link.

[0181] In some embodiments, the terminal may trigger a registration process by sending a subband set to the network device using second information carrying the NAS message. Optionally, the second information may be an uplink information transfer (ulInformationTransfer) signaling carrying the NAS message, in which a bitmap of the subband set is carried. The terminal passes the bitmap to the RRC layer through the NAS layer, and the RRC layer encapsulates the bitmap in the ulInformationTransfer signaling and sends it to the network device via the wireless link.

[0182] In some embodiments, the bitmap can be formatted according to the protocol to determine the newly added IE, which can be carried on at least one of the aforementioned capability information, message 3, NAS message, and second information. Optionally, the number of subbands divided by the BWP can determine the number of bits occupied by the string corresponding to the newly added IE.

[0183] In some embodiments, the number of bits in the bitmap is related to the number of subbands into which the BWP is divided. Optionally, the number of bits required for the bitmap can be determined based on the width of the BWP and the size of the subbands. For example, based on the width of the BWP and the size of the subbands, if the number of subbands in the BWP is 3, the bitmap will have 3 bits; if the number of subbands in the BWP is 4, the bitmap will have 4 bits; if the number of subbands in the BWP is 5, the bitmap will have 5 bits; if the number of subbands in the BWP is 6, the bitmap will have 6 bits, and so on. These are merely examples and should not be considered as limiting the scope of this application.

[0184] Step S2107: The network device sends resource configuration information.

[0185] In some embodiments, after receiving a bitmap of the subband set from the terminal, the network device can determine consecutive subbands with satisfactory signal quality based on the bitmap. Furthermore, based on the received bitmap, the network device can allocate frequency domain resources within the subband set to the terminal when subsequently allocating time-frequency resources, thereby avoiding the network device configuring frequency domain resources in subbands with poor quality to the terminal. Optionally, the terminal can receive resource configuration information sent by the network device.

[0186] In some embodiments, resource configuration information includes time-frequency resources configured by the network device for the terminal.

[0187] In some embodiments, the time-frequency resources configured by the network device for the terminal may include, but are not limited to: resource element (RE), resource block (RB), control channel element (CCE), resource grid (RG), resource block group (RBG), and resource element group (REG).

[0188] It is understandable that the frequency domain resources configured in the resource configuration information are frequency domain resources within the sub-band set, in order to ensure the communication quality between the terminal and network equipment.

[0189] In step S2108, the terminal transmits information to the network device based on the configured time and frequency resources.

[0190] In some embodiments, after obtaining resource configuration information, the terminal can transmit information with network devices based on the configured time-frequency resources. By using frequency domain resources within the subband set selected based on the subband CSI report, information transmission with network devices is achieved, avoiding communication between the terminal and network devices using inferior frequency domain resources, thereby improving transmission efficiency. In some embodiments, the information transmitted by the terminal with network devices based on the configured time-frequency resources may include service information such as voice data, data traffic, SMS messages, and multimedia messages, as well as control information, terminal status information, location information, etc.

[0191] In some embodiments, steps S2107 and S2108 are optional steps.

[0192] The communication method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2108. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, step S2103 can be implemented as an independent embodiment, step S2104 can be implemented as an independent embodiment, step S2105 can be implemented as an independent embodiment, step S2106 can be implemented as an independent embodiment, step S2101+S2102 can be implemented as an independent embodiment, step S2103+S2104 can be implemented as an independent embodiment, step S2105+S2106 can be implemented as an independent embodiment, step S2107+S2108 can be implemented as an independent embodiment, step S2103+S2104+S2105+S2106 can be implemented as an independent embodiment, step S2103+S2104+S2105+S2106+S2107 can be implemented as an independent embodiment, and so on, but not limited thereto.

[0193] In the embodiments disclosed herein, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations in other embodiments.

[0194] In the embodiments disclosed herein, each step and its optional implementation can also be carried out independently.

[0195] In this embodiment, the terminal can perform CSI measurements on the subbands within the BWP and determine the set of subbands with better signal quality based on the subband CSI report. After determining the set of subbands, the terminal can send it to the network device, so that the network device can select the subbands with better quality to configure frequency domain resources for the terminal. This ensures that the resources for communication between the terminal and the network device are of good quality, avoids resources with poor signal quality, and thus provides users with higher quality communication services.

[0196] Figure 2B is an interactive schematic diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 2B, the present disclosure relates to a communication method for a communication system, the communication system including a terminal and a network device, the method including:

[0197] Step S2201: The network device sends the first message.

[0198] In step S2202, the terminal determines the first signal quality parameters of the serving cell's TRS and the second signal quality parameters of the serving cell's SSB.

[0199] Step S2203: In response to the serving cell meeting the set conditions, perform subband CSI measurement on the terminal's current BWP based on the configured CSI RS.

[0200] Step S2204: Determine the subband set based on the subband CSI report.

[0201] For a detailed description of steps S2201-S2204, please refer to the steps in the embodiment shown in Figure 2A, which will not be repeated here.

[0202] Step S2205: The terminal sends a subband set to the network device.

[0203] In some embodiments, the terminal may trigger a registration process and send a subband set to the network device using the terminal's capability information.

[0204] In some embodiments, the terminal sends a subband set to the network device via message 3 during the random access process.

[0205] In some embodiments, the terminal triggers a registration process and sends a subband set to the network device via a non-access stratum (NAS) message.

[0206] In some embodiments, the terminal triggers a registration process and sends a subband set to the network device using second information carrying NAS messages.

[0207] Step S2206: The network device sends resource configuration information.

[0208] In step S2207, the terminal transmits information with the network device based on the configured time and frequency resources.

[0209] For a detailed description of steps S2201-S2204, please refer to the steps in the embodiment shown in Figure 2A, which will not be repeated here.

[0210] The communication method involved in the embodiments of this disclosure may include at least one of steps S2101 to S2107. For example, step S2101 can be implemented as an independent embodiment, step S2102 can be implemented as an independent embodiment, step S2103 can be implemented as an independent embodiment, step S2104 can be implemented as an independent embodiment, step S2105 can be implemented as an independent embodiment, step S2106 can be implemented as an independent embodiment, step S2101+S2102 can be implemented as an independent embodiment, step S2103+S2104 can be implemented as an independent embodiment, step S2105+S2106 can be implemented as an independent embodiment, step S2106+S2107 can be implemented as an independent embodiment, step S2103+S2104+S2105+S2106+S2107 can be implemented as an independent embodiment, and so on, but not limited thereto.

[0211] In the embodiments disclosed herein, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations in other embodiments.

[0212] In the embodiments disclosed herein, each step and its optional implementation can also be carried out independently.

[0213] In this embodiment, the terminal can perform CSI measurements on the subbands within the BWP and determine the set of subbands with better signal quality based on the subband CSI report. After determining the set of subbands, the terminal can send it to the network device, so that the network device can select the subbands with better quality to configure frequency domain resources for the terminal. This ensures that the frequency domain resources for communication between the terminal and the network device are of good quality, and can provide users with higher quality communication services.

[0214] Figure 3A is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 3A, the present disclosure relates to a communication method for a terminal, the method comprising:

[0215] Step S3101: In response to the terminal's current serving cell meeting the set conditions, CSI measurement of the subband of the terminal's current BWP is performed based on the configured CSI RS.

[0216] Step S3102: Determine the subband set based on the subband CSI report.

[0217] The subband set includes one or more combinations of subbands that meet the channel quality requirements. Optionally, each subband combination includes consecutive subbands.

[0218] Step S3103: Send the subband set to the network device.

[0219] In some embodiments, the serving cell meets the following preset conditions:

[0220] The signal quality of the Tracking Reference Signal (TRS) of the serving cell is lower than the signal quality of the Synchronization Signal Block (SSB) of the serving cell.

[0221] In some embodiments, the method further includes:

[0222] Determine the first signal quality parameters of the TRS of the serving cell;

[0223] Determine the second signal quality parameters of the SSB of the serving cell;

[0224] In response to the first signal quality parameter being lower than the second signal quality parameter, and the difference between the two being greater than a set value, it is determined that the serving cell meets the set conditions.

[0225] In some embodiments, the method further includes:

[0226] Receive first information, which is used to configure at least one of the TRS and CSI RS of the serving cell.

[0227] In some embodiments, sending the subband set to the network device includes one of the following operations:

[0228] The registration process is triggered, and the subband set is sent to the network device using the terminal's capability information;

[0229] The subband set is sent to the network device via message 3 during the random access process;

[0230] The registration process is triggered by sending the subband set to the network device via a non-access stratum (NAS) message.

[0231] The registration process is triggered by sending the subband set to the network device using the second information carrying the NAS message.

[0232] In some embodiments, the method further includes:

[0233] Determine the bitmap of the subband set;

[0234] The bitmap is sent to the network device, the bitmap carrying at least one of the capability information, the message 3, the NAS message and the second information.

[0235] In some embodiments, the method further includes:

[0236] The bitmap is carried in the Media Access Control Protocol Data Unit (MAC PDU) within the payload of message 3.

[0237] In some embodiments, after sending the subband set to the network device, the method further includes:

[0238] Receive resource configuration information, which includes the frequency domain resources of the sub-band combination.

[0239] For a detailed description of steps S3101-S3103, please refer to the steps in the embodiments shown in Figures 2A-2B, which will not be repeated here.

[0240] In the embodiments disclosed herein, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations in other embodiments.

[0241] Figure 3B is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in Figure 3B, this disclosure relates to a communication method for a network device, the method comprising:

[0242] Step S3201: Receive the subband set sent by the terminal. The subband set includes one or more subband combinations that meet the signal quality requirements. The subband combinations are determined by the terminal based on the CSI report of the subbands. The subband combinations include consecutive subbands.

[0243] In some embodiments, the method further includes:

[0244] Send first information, which is used to configure at least one of the TRS and CSI RS of the serving cell.

[0245] In some embodiments, the subband set transmitted by the receiving terminal includes one of the following operations:

[0246] Receive capability information sent by the terminal during the registration process, wherein the capability information carries the subband set;

[0247] Message 3 is received during the random access process, wherein message 3 carries the subband set;

[0248] Receive the NAS message sent by the terminal during the registration process, wherein the NAS message carries the subband set;

[0249] The terminal receives second information sent during the registration process, wherein the second information is used to carry NAS messages and carries the subband set.

[0250] In some embodiments, the method further includes:

[0251] Receive a bitmap of the subband set, the bitmap carrying at least one of the capability information, the message 3, the NAS message and the second information.

[0252] In some embodiments, the method further includes:

[0253] The bitmap is determined from the MAC PDU in the payload of message 3.

[0254] In some embodiments, after the subband set sent by the receiving terminal, the system further includes:

[0255] Send resource configuration information, which is used to configure frequency domain resources within the sub-band combination to the terminal.

[0256] For a detailed description of step S3201, please refer to the above embodiment.

[0257] In the embodiments disclosed herein, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations in other embodiments.

[0258] The following is an exemplary description of the above method.

[0259] Optionally, based on the existing optimization, CSI subband measurements are added to identify consecutive subbands with better channel quality, and this information is provided to the base station through the UE capability. The base station then allocates resources to the UE based on the best subband group provided by the UE, avoiding time-frequency resources with poor channel quality, and maximizing the UE's communication service quality in the cell.

[0260] Option 1:

[0261] 1. After the UE camps on the serving cell, it configures TRS and CSI RS. When initiating a measurement, it identifies the serving cell as a bad cell if the TRS SNR is much lower than the SSBSNR, for example, more than 10dB.

[0262] 2. The UE initiates the CSI measurement function of the subband according to the current cell bandwidth to measure the configured CSI RS;

[0263] 3. Evaluate the subband CSI report obtained from spontaneous measurements, and extract a continuous optimal subband to form a bitmap;

[0264] 4. The UE triggers the registration process to re-report the UE capability, adding the subband bitmap to the UE capability and reporting it to the base station;

[0265] 5. When allocating time and frequency resources to the UE in the future, the base station will only configure the frequency domain resources within the subband group represented by the bitmap.

[0266] Option 2: Step 4 in Option 1 can be replaced:

[0267] 4. Carry the subband bitmap in the macpdu of the msg3 payload and send it to the network side; understandably, the remaining steps are the same as in Scheme 1.

[0268] Option 3: Step 4 in Option 1 can be replaced:

[0269] 4. The UE triggers the registration process, carrying the subband bitmap in the registration request of the NAS message or in the ulInformationTransfer signaling carrying the NAS message, and sends it to the network side; it is understood that the remaining steps are the same as in Scheme 1.

[0270] The following is a description of the relevant information in this application:

[0271] In some embodiments, the Subband partitioning rules are shown in Table 1 below:

[0272] The number of subband RBs is selected according to the width of BWP. For example, if BWP has 273 RBs, then the corresponding subband is divided into 16 or 32 RBs.

[0273] 2. Bitmap

[0274] The UE specifies the continuous subband bitmap in its UE capability, which can be added as a new IE according to the format agreed upon in the protocol. The BWP (Bitmap Layout) is then divided into...

[0275] The number of subbands determines the number of bits occupied by the newly added IE string, as shown in Table 2 below:

[0276] 3. Further reporting instructions regarding capabilities

[0277] When a UE's radio capabilities change (e.g., the UE disables a frequency band or a radio function), it needs to notify the network side to update. In this case, the UE includes a 5GS Update Type information element in its Registration Request message, setting the NG-RAN Radio Capability Update Needed (NG-RAN-RCU) flag (bit 2) to 1, indicating a radio capability update requirement. This IE (information element) should be included when the UE performs the registration procedure to indicate any of the following:

[0278] a) The UE requests the use of SMS over NAS, or there is a change in the UE's requirements to use SMS over NAS.

[0279] b) A change has occurred in the UE's NG-RAN radio capability.

[0280] c) The UE requests CIoT 5GS optimizations.

[0281] Optionally, the structure of the 5GS update type information element can be explained in conjunction with Figure 4:

[0282] This information element is used to indicate certain update needs or requests to the network during the UE (User Equipment) registration process. This element appears in the UE's registration request to notify the network of certain changes or requests regarding the UE, which may include requests for SMS services, changes to wireless capabilities, or requests for CIoT (Cellular Internet of Things) 5GS optimization.

[0283] Octet 1 (8-1 bit): Contains the 5GS update type IEI (Information Element Identifier), used to identify the type of the information element.

[0284] Octet 2 (7-2 bits): Indicates the length of the 5GS update type.

[0285] Octet 3 (1 bit): Indicates whether SMS service is requested. If this bit is set, it means that the UE requests to use SMS service on the NAS or the UE's demand for SMS service on the NAS has changed.

[0286] Octet 3 (2 bits): Indicates NG-RAN Radio Capability Update (NG-RAN-RCU). If this bit is set, it means that the UE's NG-RAN radio capability has changed.

[0287] Octet 3 (3-4 bits): Indicates 5GS-PNB-CIoT. If this bit is set, it means that the UE requests CIoT 5GS optimization, where CIoT stands for Cellular Internet of Things.

[0288] Octet 3 (5-6 bits): EPS-PNB-CIoT likely refers to CIoT optimizations related to Positioning Narrowband (PNB) in LTE (Long Term Evolution) networks. EPS stands for Evolved Packet System.

[0289] The remaining Octet 3 (7-8 bits): Reserved bits.

[0290] The following is a description of the information elements for 5GS update types:

[0291] 1. SMS over NAS transport requested (SMS requested) (3 bytes, 1 bit)

[0292] Bit 1

[0293] 0: SMS (Short Message Service) transmission is not supported via NAS.

[0294] 1. Supports SMS transmission via NAS.

[0295] 2. NG-RAN Radio Capability Update (NG-RAN-RCU) (NG Radio Access Network Radio Capability Update) (Byte 3, Bit 2)

[0296] Position 2

[0297] 0: No UE wireless capability update required.

[0298] 1: UE wireless capability update required.

[0299] This instruction can be used to trigger wireless capability updates for specific Radio Access Technologies (RATs).

[0300] 3.5GS Preferred CIoT network behavior (5GS PNB-CIoT) (Byte 3, Bit 3 and 4)

[0301] Positions 3 and 4

[0302] 00: No additional information.

[0303] 01: Control plane CIoT 5GS optimization.

[0304] 10: User plane CIoT 5GS optimization.

[0305] 11: Retained.

[0306] 4. EPS Preferred CIoT network behavior (EPS-PNB-CIoT) (Bytes 3, bits 5 and 6)

[0307] Positions 5 and 6

[0308] 00: No additional information.

[0309] 01: Control plane CIoT EPS optimization.

[0310] 10: User plane CIoT EPS optimization.

[0311] 11: Retained.

[0312] 5. Bits 7 and 8 of byte 3 are reserved bits and should be encoded as zero.

[0313] This disclosure also provides embodiments of 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., a RAN) in any of the above methods.

[0314] 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 functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using 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 functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0315] 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. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is 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. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a Neural Network Processing Unit (NPU), a Tensor Processing Unit (TPU), or a Deep Learning Processing Unit (DPU).

[0316] 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 5100 may include at least one of a transceiver module 5101, a processing module 5102, etc.

[0317] The processing module is configured to, when the current serving cell of the terminal meets the set conditions, perform CSI measurement on the subband of the current cell bandwidth based on the configured Channel State Information Reference Signal (CSI RS), and determine the subband set based on the subband CSI report, wherein the subband set includes one or more subband combinations that meet the signal quality requirements, and the subband combination includes consecutive subbands.

[0318] The transceiver module is used to send the subband set to the network device.

[0319] In some embodiments, the serving cell meets the following preset conditions:

[0320] The signal quality of the Tracking Reference Signal (TRS) of the serving cell is lower than the signal quality of the Synchronization Signal Block (SSB) of the serving cell.

[0321] In some embodiments, the processing module is configured to determine a first signal quality parameter of the serving cell's TRS; determine a second signal quality parameter of the serving cell's SSB; and, in response to the first signal quality parameter being lower than the second signal quality parameter and the difference between the two being greater than a set value, determine that the serving cell meets a set condition.

[0322] In some embodiments, the transceiver module is further configured to receive first information, the first information being used to configure at least one of the TRS and CSI RS of the serving cell.

[0323] In some embodiments, the transceiver module is further configured to perform one of the following operations:

[0324] The registration process is triggered, and the subband set is sent to the network device using the terminal's capability information;

[0325] The subband set is sent to the network device via message 3 during the random access process;

[0326] The registration process is triggered by sending the subband set to the network device via a non-access stratum (NAS) message.

[0327] The registration process is triggered by sending the subband set to the network device using the second information carrying the NAS message.

[0328] In some embodiments, the processing module is further configured to determine a bitmap of the subband set;

[0329] In some embodiments, the transceiver module is further configured to send the bitmap to the network device, the bitmap being carried on at least one of the capability information, the message 3, the NAS message, and the second information.

[0330] In some embodiments, the transceiver module is further configured to carry the bitmap in the Media Access Control Protocol Data Unit (MAC PDU) in the payload of the message 3.

[0331] In some embodiments, the transceiver module is further configured to receive resource configuration information, the resource configuration information including the frequency domain resources of the sub-band combination.

[0332] Optionally, the transceiver module described above is used to perform at least one of the communication steps such as sending and / or receiving performed by the network device in any of the above methods, which will not be elaborated here.

[0333] Optionally, the above processing module is used to perform at least one of the other steps performed by the network device in any of the above methods, which will not be elaborated here.

[0334] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0335] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module. Optionally, the processing module may be interchangeable with a processor.

[0336] Figure 5B is a schematic diagram of the structure of a network device proposed in an embodiment of this disclosure. As shown in Figure 5B, the network device 5200 may include at least one of a transceiver module 5201, a processing module 5202, etc.

[0337] A transceiver module is used to receive a set of subbands sent by a terminal. The set of subbands includes one or more combinations of subbands that meet the signal quality requirements. The subband combinations are determined by the terminal based on the CSI report of the subbands. The subband combinations include consecutive subbands.

[0338] In some embodiments, the transceiver module is further configured to send first information, the first information being used to configure at least one of the TRS and CSI RS of the serving cell.

[0339] In some embodiments, the transceiver module is further configured to perform one of the following operations:

[0340] Receive capability information sent by the terminal during the registration process, wherein the capability information carries the subband set;

[0341] Message 3 is received during the random access process, wherein message 3 carries the subband set;

[0342] Receive the NAS message sent by the terminal during the registration process, wherein the NAS message carries the subband set;

[0343] The terminal receives second information sent during the registration process, wherein the second information is used to carry NAS messages and carries the subband set.

[0344] In some embodiments, the transceiver module is further configured to receive a bitmap of the subband set, the bitmap being carried on at least one of the capability information, the message 3, the NAS message, and the second information.

[0345] In some embodiments, the processing module is configured to determine the bitmap from the MAC PDU in the payload of message 3.

[0346] In some embodiments, the transceiver module is further configured to send resource configuration information, which is used to configure frequency domain resources within the sub-band combination to the terminal.

[0347] Optionally, the transceiver module described above is used to perform at least one of the communication steps such as sending and / or receiving performed by the network device in any of the above methods, which will not be elaborated here.

[0348] Optionally, the above processing module is used to perform at least one of the other steps performed by the network device in any of the above methods, which will not be elaborated here.

[0349] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module, which may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0350] In some embodiments, the processing module may be a single module or may include multiple sub-modules. Optionally, the multiple sub-modules may each perform all or part of the steps required by the processing module. Optionally, the processing module may be interchangeable with a processor.

[0351] 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.

[0352] 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 communication device 6100 is used to execute any of the above methods.

[0353] 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 also be located outside the communication device 6100.

[0354] 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 transceivers 6103 perform the communication steps such as sending and / or receiving in the above method.

[0355] In some embodiments, a transceiver may include a receiver and / or 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.

[0356] In some embodiments, the communication device 6100 may include one or more interface circuits 6104. Optionally, the interface circuit 6104 is connected to the memory 6102, and the interface circuit 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 circuit 6104 can read instructions stored in the memory 6102 and send the instructions to the processor 6101.

[0357] The communication device 6100 described in the above embodiments may be a terminal, a network device, or a third entity, 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 a standalone device or a part of a larger device. For example, the communication device may be: (1) a standalone 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.

[0358] 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.

[0359] Chip 6200 includes one or more processors 6201, which are used to perform any of the above methods.

[0360] In some embodiments, chip 6200 further includes one or more interface circuits 6202. Optionally, the interface circuit 6202 is connected to memory 6203, and the interface circuit 6202 can be used to receive signals from memory 6203 or other devices, and the interface circuit 6202 can be used to send signals to memory 6203 or other devices. For example, the interface circuit 6202 can read instructions stored in memory 6203 and send the instructions to processor 6201.

[0361] In some embodiments, the interface circuit 6202 performs the communication steps such as sending and / or receiving in the above method.

[0362] In some embodiments, the terms interface circuit, interface, transceiver pin, transceiver, etc., can be used interchangeably.

[0363] In some embodiments, chip 6200 further includes one or more memories 6203 for storing instructions. Optionally, all or part of the memories 6203 may be located outside of chip 6200.

[0364] This disclosure also proposes a storage medium storing instructions that, when executed on the communication device 6100, cause the communication device 6100 to perform any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0365] 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.

[0366] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

Claims

1. A communication method, characterized in that, The method, executed by a terminal, includes: In response to the fact that the current serving cell of the terminal meets the set conditions, CSI measurement of the subband of the current bandwidth portion (BWP) of the terminal is performed based on the configured Channel State Information Reference Signal (CSI RS). Based on the subband CSI report, a subband set is determined, wherein the subband set includes one or more subband combinations that meet the channel quality requirements, and the subband combination includes consecutive subbands; Send the subband set to the network device.

2. The method according to claim 1, characterized in that, The serving cell meets the following set conditions: The signal quality of the Tracking Reference Signal (TRS) of the serving cell is lower than the signal quality of the Synchronization Signal Block (SSB) of the serving cell.

3. The method according to claim 2, characterized in that, The method further includes: Determine the first signal quality parameters of the TRS of the serving cell; Determine the second signal quality parameters of the SSB of the serving cell; In response to the first signal quality parameter being lower than the second signal quality parameter, and the difference between the two being greater than a set value, it is determined that the serving cell meets the set conditions.

4. The method according to claim 1, characterized in that, The method further includes: Receive first information, which is used to configure at least one of the TRS and CSIRS of the serving cell.

5. The method according to any one of claims 1-4, characterized in that, Sending the subband set to the network device includes one of the following operations: The registration process is triggered, and the subband set is sent to the network device using the terminal's capability information; The subband set is sent to the network device via message 3 during the random access process; The registration process is triggered by sending the subband set to the network device via a non-access stratum (NAS) message. The registration process is triggered by sending the subband set to the network device using the second information carrying the NAS message.

6. The method according to claim 5, characterized in that, The method further includes: Determine the bitmap of the subband set; The bitmap is sent to the network device, the bitmap carrying at least one of the capability information, the message 3, the NAS message and the second information.

7. The method according to claim 6, characterized in that, The method further includes: The bitmap is carried in the Media Access Control Protocol Data Unit (MAC PDU) within the payload of message 3.

8. The method according to any one of claims 1-7, characterized in that, After sending the subband set to the network device, the method further includes: Receive resource configuration information, which includes the frequency domain resources of the sub-band combination.

9. A communication method, characterized in that, Performed by a network device, the method includes: The receiving terminal sends a set of subbands, the set of subbands including one or more combinations of subbands that meet the signal quality requirements, the subband combinations being determined by the terminal based on the CSI report of the subbands, and the subband combinations including consecutive subbands.

10. The method according to claim 9, characterized in that, The method further includes: Send first information, which is used to configure at least one of the TRS and CSIRS of the serving cell.

11. The method according to claim 9 or 10, characterized in that, The subband set transmitted by the receiving terminal includes one of the following operations: Receive capability information sent by the terminal during the registration process, wherein the capability information carries the subband set; Message 3 is received during the random access process, wherein message 3 carries the subband set; Receive the NAS message sent by the terminal during the registration process, wherein the NAS message carries the subband set; The terminal receives second information sent during the registration process, wherein the second information is used to carry NAS messages and carries the subband set.

12. The method according to claim 11, characterized in that, The method further includes: Receive a bitmap of the subband set, the bitmap carrying at least one of the capability information, the message 3, the NAS message and the second information.

13. The method according to claim 12, characterized in that, The method further includes: The bitmap is determined from the MAC PDU in the payload of message 3.

14. The method according to any one of claims 9-13, characterized in that, After the subband set sent by the receiving terminal, it also includes: Send resource configuration information, which includes frequency domain resources within the sub-band combination configured for the terminal.

15. A terminal, characterized in that, include: The processing module is configured to, when the current serving cell of the terminal meets the set conditions, perform CSI measurement of the subband of the current cell bandwidth based on the configured Channel State Information Reference Signal (CSIRS), and determine the subband set based on the subband CSI report, wherein the subband set includes one or more subband combinations that meet the signal quality requirements, and the subband combination includes consecutive subbands. The transceiver module is used to send the subband set to the network device.

16. A network device, characterized in that, include: A transceiver module is used to receive a set of subbands sent by a terminal. The set of subbands includes one or more combinations of subbands that meet the signal quality requirements. The subband combinations are determined by the terminal based on the CSI report of the subbands. The subband combinations include consecutive subbands.

17. A communication device, characterized in that, The communication device is used to perform the method according to any one of claims 1 to 8, 9 to 14.

18. A communication system, characterized in that, The device includes a terminal and a network device, wherein the terminal is configured to implement the method of any one of claims 1 to 8, and the network device is configured to implement the method of any one of claims 9 to 14.

19. A storage medium storing instructions, characterized in that, When the instructions are executed on a communication device, the communication device performs the method as described in any one of claims 1 to 8, 9 to 14.

20. A program product comprising at least one of a program and instructions, characterized in that, When at least one of the programs or instructions is executed by the communication device, it implements the method of any one of claims 1 to 8 and 9 to 14.

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