Method and apparatus for determining cfr, communication device, and storage medium

Abstract

The embodiment of the disclosure provides a determination method for receiving CFR of MBS, wherein the method is executed by a terminal, and the method comprises the following steps: determining CFR used for receiving MBS in a radio resource control (RRC) non-connected state; wherein a frequency domain position of the CFR corresponds to at least one of the following frequency domain positions: a first frequency domain position determined based on a common control resource set (CORESET); and a second frequency domain position determined based on a downlink bandwidth part (BWP) configured for the terminal.

Description

Technical Field

[0001] This disclosure relates to, but is not limited to, the field of wireless communication technology, and particularly to a method, apparatus, communication device, and storage medium for determining the CFR of an MBS receiver. Background Technology

[0002] New Radio (NR) introduced Multicast and Broadcast Service (MBS). To facilitate MBS channel transmission, a common frequency resource (CFR) was defined. MBS-related channel configuration and transmission are all performed based on the CFR.

[0003] In related technologies, in scenarios where transmission is based on CFR, the determination of CFR may be unclear, which can directly lead to low resource utilization on the network side or high power consumption of the terminal. Summary of the Invention

[0004] This disclosure provides a method, apparatus, communication device, and storage medium for determining the CFR for transmitting MBS.

[0005] According to a first aspect of the present disclosure, a method for determining the CFR of receiving an MBS is provided, wherein the method is performed by a terminal, the method comprising:

[0006] Determine the common frequency resource (CFR) for receiving multicast and broadcast services MBS in the Radio Resource Control (RRC) connectionless state;

[0007] The frequency domain position of the CFR corresponds to at least one of the following frequency domain positions:

[0008] The first frequency domain position is determined based on the common control resource set CORESET;

[0009] The second frequency domain position is determined based on the downlink bandwidth portion (BWP) configured for the terminal.

[0010] In one embodiment, the terminal is a capability-reduced terminal, Redcap.

[0011] In one embodiment, determining the common frequency resource (CFR) for receiving MBS in the Radio Resource Control (RRC) disconnected state includes:

[0012] The CFR is determined based on whether the second frequency domain position is configured.

[0013] In one embodiment, determining the CFR for receiving the MBS in the RRC disconnected state includes:

[0014] Without configuring the second frequency domain position, the frequency domain position of the CFR is determined to be the first frequency domain position.

[0015] In one embodiment, determining the CFR for receiving the MBS in the RRC disconnected state includes:

[0016] When the second frequency domain location is configured, the CFR is determined based on the frequency domain resource configuration in which the terminal resides in the RRC non-connected state.

[0017] In one embodiment, determining the CFR based on the frequency domain resource configuration where the terminal resides in the RRC non-connected state includes:

[0018] In response to the fact that no frequency domain resources are configured for the terminal to reside in the RRC non-connected state, the frequency domain location of the CFR is determined to be the first frequency domain location;

[0019] or,

[0020] In response to the frequency domain resources configured for the terminal to reside in the RRC non-connected state, the frequency domain position of the CFR is determined as the second frequency domain position.

[0021] In one embodiment, determining the CFR for receiving the MBS in the RRC disconnected state includes:

[0022] When the second frequency domain position is configured, the CFR is determined based on the indication of a predetermined signaling.

[0023] In one embodiment, determining the CFR based on the predetermined signaling instruction includes:

[0024] In response to the predetermined signaling carrying first information, the frequency domain position of the CFR is determined to be the first frequency domain position;

[0025] or,

[0026] In response to the predetermined signaling carrying second information, the frequency domain position of the CFR is determined to be the second frequency domain position;

[0027] or,

[0028] In response to the fact that the predetermined signaling does not carry predetermined information, the frequency domain position of the CFR is determined to be either a first frequency domain position or a second frequency domain position.

[0029] In one embodiment, determining the CFR for receiving the MBS in the RRC disconnected state includes:

[0030] With the second frequency domain position configured, the CFR is determined based on the uplink BWP where the Physical Uplink Control Channel (PUCCH) carrying the MBS Hybrid Automatic Repeat Request (HARQ) feedback is located. 10. The method according to claim 9, wherein determining the CFR based on the uplink BWP where the Physical Uplink Control Channel (PUCCH) carrying the MBS Hybrid Automatic Repeat Request (HARQ) feedback is located includes:

[0031] In response to uplink HARQ feedback in the downlink transmission of the MBS, the frequency domain position of the CFR is determined to be the second frequency domain position.

[0032] In one embodiment, the second frequency domain position is a position with the same center frequency as the uplink BWP.

[0033] According to a second aspect of the present disclosure, a method for determining the CFR for transmitting MBS is provided, wherein the method is performed by a base station, the method comprising:

[0034] Determine the CFR used for transmitting MBS in the connectionless state of Radio Resource Control (RRC);

[0035] The frequency domain position of the CFR corresponds to at least one of the following frequency domain positions:

[0036] The first frequency domain position determined by CORESET;

[0037] The second frequency domain position is determined based on the downlink BWP configured for the terminal.

[0038] In one embodiment, the terminal is Redcap.

[0039] In one embodiment, determining the common frequency resource (CFR) for transmitting MBS in the Radio Resource Control (RRC) disconnected state includes:

[0040] The CFR is determined based on whether the second frequency domain position is configured.

[0041] In one embodiment, determining the CFR for sending the MBS in the RRC disconnected state includes:

[0042] In the absence of a second frequency domain position, the frequency domain position of the CFR is determined to be the first frequency domain position.

[0043] In one embodiment, determining the CFR for sending the MBS in the RRC disconnected state includes:

[0044] When the second frequency domain location is configured, the CFR is determined based on the frequency domain resource configuration in which the terminal resides in the RRC non-connected state.

[0045] In one embodiment, determining the CFR based on the frequency domain resource configuration where the terminal resides in the RRC non-connected state includes:

[0046] In response to the fact that no frequency domain resources are configured for the terminal to reside in the RRC non-connected state, the frequency domain location of the CFR is determined to be the first frequency domain location;

[0047] or,

[0048] In response to the frequency domain resources configured for the terminal to reside in the RRC non-connected state, the frequency domain position of the CFR is determined as the second frequency domain position.

[0049] In one embodiment, determining the CFR for sending the MBS in the RRC disconnected state includes:

[0050] When the second frequency domain position is configured, the CFR is determined based on the indication of a predetermined signaling.

[0051] In one embodiment, determining the CFR based on the predetermined signaling instruction includes:

[0052] In response to the predetermined signaling carrying first information, the frequency domain position of the CFR is determined to be the first frequency domain position;

[0053] or,

[0054] In response to the predetermined signaling carrying second information, the frequency domain position of the CFR is determined to be the second frequency domain position;

[0055] or,

[0056] In response to the fact that the predetermined signaling does not carry predetermined information, the frequency domain position of the CFR is determined to be either a first frequency domain position or a second frequency domain position.

[0057] In one embodiment, determining the CFR for sending the MBS in the RRC disconnected state includes:

[0058] When the second frequency domain position is configured, the CFR is determined based on the uplink BWP where the physical uplink control channel PUCCH carrying the MBS Hybrid Automatic Repeat Request (HARQ) feedback is located.

[0059] In one embodiment, determining the CFR based on the uplink BWP where the physical uplink control channel PUCCH carrying the MBS Hybrid Automatic Repeat Request (HARQ) feedback resides includes:

[0060] In response to uplink HARQ feedback in the downlink transmission of the MBS, the frequency domain position of the CFR is determined to be the second frequency domain position.

[0061] In one embodiment, the second frequency domain position is a position with the same center frequency as the uplink BWP.

[0062] According to a third aspect of the present disclosure, a communication device is provided, the communication device comprising:

[0063] processor;

[0064] Memory used to store the processor's executable instructions;

[0065] The processor is configured to implement the method described in any embodiment of this disclosure when running the executable instructions.

[0066] According to a fourth aspect of the present disclosure, a computer storage medium is provided, the computer storage medium storing a computer executable program, which, when executed by a processor, implements the methods described in any embodiment of the present disclosure.

[0067] In this embodiment of the disclosure, a common frequency resource (CFR) for receiving MBS is determined in the Radio Resource Control (RRC) connectionless state. The frequency domain location of the CFR corresponds to at least one of the following frequency domain locations: a first frequency domain location determined based on the Common Control Resource Set (CORESET); and a second frequency domain location determined based on the Downlink Bandwidth Part (BWP) configured for the terminal. Thus, the frequency domain location of the CFR can be definitively determined based on the first and / or the second frequency domain location. Compared to methods where the frequency domain location of the CFR cannot be definitively determined, this improves network-side resource utilization and reduces power consumption associated with the terminal determining the CFR's resource location. Attached Figure Description

[0068] Figure 1 This is a schematic diagram illustrating the structure of a wireless communication system according to an exemplary embodiment.

[0069] Figure 2 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0070] Figure 3 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0071] Figure 4This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0072] Figure 5 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0073] Figure 6 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0074] Figure 7 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0075] Figure 8 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0076] Figure 9 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0077] Figure 10 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0078] Figure 11 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0079] Figure 12 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0080] Figure 13 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0081] Figure 14 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0082] Figure 15 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0083] Figure 16 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0084] Figure 17This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0085] Figure 18 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0086] Figure 19 This is a flowchart illustrating a method for determining the CFR for transmitting MBS according to an exemplary embodiment.

[0087] Figure 20 This is a schematic diagram of a CFR determination device for transmitting MBS according to an exemplary embodiment.

[0088] Figure 21 This is a schematic diagram of a CFR determination device for transmitting MBS according to an exemplary embodiment.

[0089] Figure 22 This is a schematic diagram of the structure of a terminal according to an exemplary embodiment.

[0090] Figure 23 This is a block diagram illustrating a base station according to an exemplary embodiment. Detailed Implementation

[0091] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with those of this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the embodiments of this disclosure as detailed in the appended claims.

[0092] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. The singular forms “a” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0093] It should be understood that although the terms first, second, third, etc., may be used to describe various information in embodiments of this disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, first information may also be referred to as second information without departing from the scope of embodiments of this disclosure, and similarly, second information may also be referred to as first information. Depending on the context, the word "if" as used herein may be interpreted as "when," "when," or "in response to a determination."

[0094] For the sake of brevity and ease of understanding, the terms “greater than” or “less than” are used in this document to characterize size relationships. However, it will be understood by those skilled in the art that the term “greater than” also includes the meaning of “greater than or equal to”, and “less than” also includes the meaning of “less than or equal to”.

[0095] Please refer to Figure 1 This illustration shows a schematic diagram of the structure of a wireless communication system provided in an embodiment of this disclosure. Figure 1 As shown, the wireless communication system is a communication system based on mobile communication technology. The wireless communication system may include: several user equipment 110 and several base stations 120.

[0096] User equipment 110 can be a device that provides voice and / or data connectivity to a user. User equipment 110 can communicate with one or more core networks via a Radio Access Network (RAN). User equipment 110 can be an Internet of Things (IoT) user equipment, such as sensor devices, mobile phones, and computers with IoT user equipment capabilities. For example, it can be a fixed, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted device. Examples include a station (STA), subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, user device, or user equipment. Alternatively, user equipment 110 can also be a device from an unmanned aerial vehicle (UAV). Alternatively, user equipment 110 can also be a vehicle-mounted device, such as a vehicle computer with wireless communication capabilities, or a wireless user equipment connected to an external vehicle computer. Alternatively, user equipment 110 can also be a roadside device, such as a street light, traffic light, or other roadside device with wireless communication capabilities.

[0097] Base station 120 can be a network-side device in a wireless communication system. This wireless communication system can be a fourth-generation mobile communication (4G) system, also known as a Long Term Evolution (LTE) system; or it can be a 5G system, also known as a New Radio (NR) system; or it can be the next generation after 5G. In this case, the access network in the 5G system can be called NG-RAN (New Generation-Radio Access Network).

[0098] The base station 120 can be an evolved NB (eNB) used in a 4G system. Alternatively, the base station 120 can also be a gNB (gNB) using a centralized-distributed architecture in a 5G system. When the base station 120 adopts a centralized-distributed architecture, it typically includes a central unit (CU) and at least two distributed units (DUs). The central unit is equipped with a protocol stack of the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Media Access Control (MAC) layer; the distributed units are equipped with a physical (PHY) layer protocol stack. This disclosure does not limit the specific implementation of the base station 120.

[0099] Base station 120 and user equipment 110 can establish a wireless connection via a wireless air interface. In different implementations, the wireless air interface is a wireless air interface based on the fourth-generation mobile communication network technology (4G) standard; or, the wireless air interface is a wireless air interface based on the fifth-generation mobile communication network technology (5G) standard, such as a new air interface; or, the wireless air interface can also be a wireless air interface based on a next-generation mobile communication network technology standard based on 5G.

[0100] In some embodiments, user equipment 110 can also establish E2E (End to End) connections. Examples include V2V (vehicle to vehicle), V2I (vehicle to Infrastructure), and V2P (vehicle to pedestrian) communication scenarios in vehicle-to-everything (V2X) communication.

[0101] Here, the user equipment mentioned above can be considered as the terminal equipment in the following embodiments.

[0102] In some embodiments, the wireless communication system described above may further include a network management device 130.

[0103] Several base stations 120 are connected to network management device 130. Network management device 130 can be a core network device in a wireless communication system, such as a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Alternatively, it can be other core network devices, such as a Serving Gateway (SGW), a Public Data Network Gateway (PGW), a Policy and Charging Rules Function (PCRF), or a Home Subscriber Server (HSS). The implementation of network management device 130 is not limited in this embodiment.

[0104] To facilitate understanding by those skilled in the art, this disclosure provides multiple embodiments to clearly illustrate the technical solutions of the embodiments of this disclosure. Of course, those skilled in the art will understand that the multiple embodiments provided in this disclosure can be executed individually, or in combination with the methods of other embodiments in this disclosure, or individually or in combination with some methods in other related technologies; this disclosure does not limit these aspects.

[0105] To better understand the technical solutions disclosed in this embodiment, relevant application scenarios are explained:

[0106] In 4G, the fourth-generation mobile communication network system based on the Long Term Evolution (LTE) network, two major technologies were proposed to support Internet of Things (IoT) services: Machine-Type Communication (MTC) and Narrowband Internet of Things (NB-IoT). These technologies primarily target scenarios with low data rates and high latency, such as meter reading and environmental monitoring. Among these technologies, NB-IoT can only support a maximum data rate of a few hundred kilobytes per second (kbps), while MTC currently only supports a maximum rate of a few megabytes per second (Mbps). However, with the continuous development of IoT services, such as video surveillance, smart homes, wearable devices, and industrial sensing monitoring, these services typically require data rates of tens to 100 megabytes per second (Mbps) and relatively high latency. Therefore, the MTC and NB-IoT technologies in LTE are insufficient to meet these requirements. Based on this situation, a new type of user equipment (UE) was proposed in the 5G New Radio (NR) to cover these mid-range IoT devices. This new terminal type is called a Reduced Capability UE, or simply NR-lite.

[0107] Similar to IoT devices in LTE, 5G NR-lite typically needs to meet the following requirements: 1. Low cost and low complexity; 2. A certain degree of coverage enhancement; 3. Power saving.

[0108] Since NR (New Radio) is designed for high-end terminals requiring high speed and low latency, its design cannot meet the requirements of NR-lite. Therefore, NR systems need to be modified to meet NR-lite requirements. For example, to meet requirements such as low cost and low complexity, the RF bandwidth of NR-IoT can be limited, for instance, to 5 MHz or 10 MHz; or the size of the NR-lite buffer can be limited, thereby limiting the size of each received transmission block, etc. Regarding power saving, possible optimization directions include simplifying the communication process and reducing the number of times NR-lite users need to detect the downlink control channel.

[0109] MBS is a multicast and broadcast service in NR systems. In the standardization process, the CFR (Content Frame Rate) was defined to facilitate the transmission of MBS-related Physical Downlink Control Channel (PDCCH) or Physical Downlink Shared Channel (PDSCH). That is, the configuration and transmission of MBS-related PDCCH / PDSCH are based on the CFR.

[0110] In one embodiment, for a terminal in the RRC disconnected state, the terminal can use the frequency resources corresponding to the common control resource set CORESET#0 as the CFR. The reason for using CORESET#0 as the basis for CFR configuration is that the terminal resides on the Bandwidth Part (BWP) in the RRC disconnected state.

[0111] In one embodiment, in the capacity-reduced terminal RedCap, considering factors such as terminal bandwidth limitations and the center frequency allocation of the time-division system, an initial UL / DL BWP is defined for the RedCap terminal. Thus, RedCap can reside on this initial DL BWP. That is, the terminal can receive paging messages on this BWP.

[0112] In one embodiment, for a RedCap terminal, based on configuration or certain preset rules, the terminal can reside on CORESET#0 or the initial DL BWP when in an RRC disconnected state. It is clear that its residing method or frequency domain location differs from Non-RedCap. Therefore, how to configure the CFR in RedCap MBS is a question that needs to be considered.

[0113] like Figure 2 As shown, this embodiment provides a method for determining the CFR for receiving MBS, wherein the method is executed by a terminal, and the method includes:

[0114] Step 21: Determine the common frequency resource (CFR) for receiving multicast and broadcast services (MBS) in the Radio Resource Control (RRC) connectionless state;

[0115] The frequency domain position of CFR corresponds to at least one of the following frequency domain positions:

[0116] The first frequency domain position is determined based on the common control resource set CORESET;

[0117] The second frequency domain position is determined based on the downlink bandwidth portion (BWP) configured for the terminal.

[0118] In one embodiment, a common frequency resource (CFR) for receiving MBS is determined in the Radio Resource Control (RRC) disconnected state;

[0119] The frequency domain position of CFR corresponds to the first frequency domain position determined based on the common control resource set CORESET and / or the second frequency domain position determined based on the downlink bandwidth portion BWP.

[0120] Here, the terminal can be, but is not limited to, a mobile phone, tablet computer, wearable device, vehicle terminal, roadside unit (RSU), smart home terminal, industrial sensing device and / or medical device, etc. For example, a smart home terminal may include a camera, temperature acquisition device, and brightness acquisition device, etc. The terminal can be a RedCap terminal.

[0121] Here, the base station involved in this disclosure can be of various types, such as a base station for a third-generation mobile communication (3G) network, a base station for a fourth-generation mobile communication (4G) network, a base station for a fifth-generation mobile communication (5G) network, or other evolved base stations.

[0122] In one scenario embodiment, after the terminal determines the CFR, it can report the CFR to the base station, whereby the CFR can be used by the base station to send MBS.

[0123] Here, the first frequency domain location is determined based on the common control resource set (CORESET). The second frequency domain location is determined based on the downlink bandwidth portion (BWP).

[0124] In one embodiment, the CFR for receiving MBS in the RRC disconnected state can be determined from at least one of a first frequency domain location determined based on CORESET and a second frequency domain location determined based on the downlink BWP configured for the base station. It should be noted that the determined frequency domain location of the CFR can be the first frequency domain location; or, the determined frequency domain location of the CFR can be the second frequency domain location; or, the determined frequency domain location of the CFR can be a combination of a portion of the first frequency domain location and a portion of the CFR's frequency domain location; or, the determined frequency domain location of the CFR can be other frequency domain locations associated with the first frequency domain location and / or the second frequency domain location. In short, the frequency domain location of the CFR is determined based on the first frequency domain location and the second frequency domain location, and is not limited thereto.

[0125] Here, the RRC disconnected state can be the RRC idle state and / or the RRC inactive state, but it is not limited to the RRC idle state and / or the RRC inactive state. Here, with network evolution, the RRC disconnected state can be any state in which the terminal and the base station have not established an RRC connection.

[0126] In one embodiment, a CFR for receiving MBS is determined in the RRC idle state; MBS is received on this CFR.

[0127] In one embodiment, a CFR for receiving MBS is determined in the RRC inactive state; MBS is received on this CFR.

[0128] Here, the CORESET used to determine the first frequency domain location can be selected from multiple CORESETs. For example, CORESET#0 can be selected from CORESET#0, CORESET#1, and CORESET#2 as the CORESET used to determine the first frequency domain location. It should be noted that the specific CORESET used to determine the first frequency domain location can be indicated by the network configuration, can be the default configuration (e.g., specified by a predetermined protocol), or can be determined by the terminal based on its own behavior; no limitation is made here.

[0129] In one embodiment, based on the determination result of whether the network is configured with a second frequency domain location, a common frequency resource (CFR) for receiving MBS in the non-connected state of Radio Resource Control (RRC) is determined; wherein, the frequency domain location of the CFR corresponds to a first frequency domain location determined based on the common control resource set (CORESET) and / or a second frequency domain location determined based on the downlink bandwidth portion (BWP) configured for the base station.

[0130] In one embodiment, in response to the network not configuring a second frequency domain location, the frequency domain location of the CFR used to receive MBS in the RRC disconnected state is determined as a first frequency domain location. The terminal receives MBS at this first frequency domain location.

[0131] In one embodiment, in response to the network configuring a second frequency domain location, the CFR for receiving MBS in the RRC-unconnected state is determined based on the frequency domain resource configuration in which the terminal resides in the RRC-unconnected state. Here, the CFR for receiving MBS in the RRC-unconnected state may be determined based on whether the network configures the frequency domain resource configuration in which the terminal resides in the RRC-unconnected state.

[0132] In one embodiment, in response to the absence of configured frequency domain resources for the terminal to reside in the RRC disconnected state, the CFR used for receiving MBS in the RRC disconnected state is determined to be a first frequency domain location; the terminal receives MBS at this first frequency domain location.

[0133] In one embodiment, in response to the frequency domain resources configured for the terminal to reside in the RRC disconnected state, the CFR used for receiving MBS in the RRC disconnected state is determined to be a second frequency domain location; the terminal receives MBS at the second frequency domain location.

[0134] In one embodiment, in response to a configured second frequency domain location, a Channel Frame (CFR) for receiving MBS in the RRC disconnected state is determined based on an indication of predetermined signaling. Here, the CFR for receiving MBS in the RRC disconnected state may be determined according to the type of predetermined information carried by the predetermined signaling. In some possible implementations, in response to predetermined signaling carrying first information, the frequency domain location of the CFR for receiving MBS in the RRC disconnected state is determined as a first frequency domain location; the terminal receives MBS at this first frequency domain location.

[0135] In one embodiment, in response to a predetermined signaling message carrying second information, the frequency domain location of the CFR used for receiving MBS in the RRC disconnected state is determined as a second frequency domain location; the terminal receives MBS at this second frequency domain location. Here, the CFR used for receiving MBS in the RRC disconnected state may be determined based on whether the predetermined signaling message carries predetermined information. In one embodiment, in response to a predetermined signaling message not carrying predetermined information, the frequency domain location of the CFR used for receiving MBS in the RRC disconnected state is determined as a first frequency domain location or a second frequency domain location; the terminal may receive MBS at this first frequency domain location or the second frequency domain location.

[0136] In one embodiment, in response to a configured second frequency domain location, the CFR for receiving the MBS in the RRC disconnected state is determined based on the uplink BWP where the physical uplink control channel PUCCH carrying the MBS Hybrid Automatic Repeat Request (HARQ) feedback resides. Here, the second frequency domain location may be determined as the frequency domain location for receiving the MBS in the RRC disconnected state in response to uplink HARQ feedback during downlink transmission of the MBS, where the second frequency domain location has the same center frequency as the uplink BWP.

[0137] In this embodiment of the disclosure, a common frequency resource (CFR) for receiving MBS is determined in the Radio Resource Control (RRC) disconnected state. The frequency domain location of the CFR corresponds to at least one of the following frequency domain locations: a first frequency domain location determined based on the Common Control Resource Set (CORESET); and a second frequency domain location determined based on the Downlink Bandwidth Portion (BWP) configured for the terminal. Thus, the frequency domain location of the CFR can be definitively determined based on the first and / or second frequency domain locations. Compared to methods where the frequency domain location of the CFR cannot be definitively determined, this improves network-side resource utilization and reduces power consumption associated with the terminal determining the CFR's resource location.

[0138] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0139] like Figure 3 As shown, this embodiment provides a method for determining the CFR of the received MBS, wherein the method is executed by the terminal and includes:

[0140] Step 31: Determine the CFR used to receive MBS in the RRC non-connected state, depending on whether a second frequency domain position is configured.

[0141] Here, the second frequency domain position is the position determined based on the downlink bandwidth portion (BWP).

[0142] In one embodiment, in response to the network not configuring a second frequency domain location, the frequency domain location of the CFR used to receive MBS in the RRC disconnected state is determined as a first frequency domain location. The terminal receives MBS at this first frequency domain location.

[0143] In one embodiment, in response to the network configuring a second frequency domain location, the CFR for receiving MBS in the RRC-unconnected state is determined based on the frequency domain resource configuration of the terminal residing in the RRC-unconnected state. Here, the frequency domain resource configuration residing in the RRC-unconnected state may indicate either that frequency domain resources residing in the RRC-unconnected state are configured or that frequency domain resources are not configured in the RRC-unconnected state.

[0144] In one embodiment, in response to the absence of configured frequency domain resources for the terminal to reside in the RRC disconnected state, a first frequency domain location is determined for the CFR used to receive MBS in the RRC disconnected state; the terminal receives MBS at this first frequency domain location. In some possible implementations, alternatively, in response to the presence of configured frequency domain resources for the terminal to reside in the RRC disconnected state, a second frequency domain location is determined for the CFR used to receive MBS in the RRC disconnected state; the terminal receives MBS at this second frequency domain location.

[0145] In this way, when the terminal receives MBS downlink services, it does not need to switch back and forth between the first frequency domain position and the second frequency domain position, which can save the terminal's power consumption and improve the terminal's battery life.

[0146] In one embodiment, in response to the configuration of a second frequency domain location, a CFR for receiving MBS in the Radio Resource Control (RRC) disconnected state is determined based on an indication of predetermined signaling. Here, the predetermined signaling may carry different types of predetermined information or may not carry predetermined information. The predetermined information may be first information or second information.

[0147] In one embodiment, in response to a predetermined signaling message carrying first information, the frequency domain location of the CFR used for receiving MBS in the RRC disconnected state is determined as a first frequency domain location; the terminal receives MBS at the first frequency domain location. Alternatively, in response to a predetermined signaling message carrying second information, the frequency domain location of the CFR used for receiving MBS in the RRC disconnected state is determined as a second frequency domain location; the terminal receives MBS at the second frequency domain location.

[0148] In another embodiment, in response to the predetermined signaling not carrying predetermined information, the frequency domain location of the CFR used to receive MBS in the RRC disconnected state is determined to be either a first frequency domain location or a second frequency domain location; the terminal can receive MBS at either the first or second frequency domain location. This increases network flexibility. When the network wants to achieve high resource utilization, the CFR can be configured at the first frequency domain location. In this way, RedCap terminals and non-RedCap terminals can share the same CFR frequency domain location. When the network controls the terminal to save energy, the CFR frequency domain location can be configured at the same frequency as the terminal's camp location, avoiding the terminal switching between different BWPs, saving terminal power consumption, and improving terminal battery life.

[0149] In one embodiment, in response to a configured second frequency domain location, the uplink BWP containing the Physical Uplink Control Channel (PUCCH) carrying the MBS Hybrid Automatic Repeat Request (HARQ) feedback is used to determine the CFR for receiving the MBS in the RRC disconnected state. Here, the second frequency domain location can be determined as the frequency domain location for receiving the MBS in the RRC disconnected state in response to uplink HARQ feedback during downlink transmission of the MBS. This second frequency domain location has the same center frequency as the uplink BWP. Thus, in a TDD system, this ensures that the UL BWP and DL BWP have the same center frequency. Having the same center frequency reduces the need for the terminal to switch center frequencies during uplink / downlink handover, thereby saving terminal power consumption and improving battery life.

[0150] In this embodiment of the disclosure, the CFR received by MBS in the RRC non-connected state can be adapted to the second frequency domain position, making the network configuration more flexible.

[0151] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0152] like Figure 4 As shown, this embodiment provides a method for determining the CFR of the received MBS, wherein the method is executed by the terminal and includes:

[0153] Step 41: With the second frequency domain position configured, determine the frequency domain position of the CFR used to receive MBS in the RRC non-connected state as the first frequency domain position.

[0154] Here, the first frequency domain location is determined based on the common control resource set (CORESET). The second frequency domain location is determined based on the downlink bandwidth portion (BWP) configured for the base station.

[0155] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0156] like Figure 5 As shown, this embodiment provides a method for determining the CFR of the received MBS, wherein the method is executed by the terminal and includes:

[0157] Step 51: Without configuring the second frequency domain location, determine the CFR used to receive MBS in the Radio Resource Control (RRC) non-connected state based on the frequency domain resource configuration where the terminal resides in the RRC non-connected state.

[0158] Here, the second frequency domain position can be the position determined based on the downlink bandwidth portion BWP.

[0159] In one embodiment, in response to the absence of configured frequency domain resources for the terminal to reside in the RRC disconnected state, a first frequency domain location is determined for the CFR used to receive MBS in the RRC disconnected state; the terminal receives MBS at this first frequency domain location. In some possible implementations, alternatively, in response to the presence of configured frequency domain resources for the terminal to reside in the RRC disconnected state, a second frequency domain location is determined for the CFR used to receive MBS in the RRC disconnected state; the terminal receives MBS at this second frequency domain location.

[0160] In this way, when the terminal receives MBS downlink services, it does not need to switch back and forth between the first frequency domain position and the second frequency domain position, which can save the terminal's power consumption and improve the terminal's battery life.

[0161] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0162] like Figure 6 As shown, this embodiment provides a method for determining the CFR of the received MBS, wherein the method is executed by the terminal and includes:

[0163] Step 61: In response to the frequency domain resources that the terminal does not configure to reside in in the RRC non-connected state, determine the frequency domain position of the CFR used to receive MBS in the RRC non-connected state as the first frequency domain position;

[0164] or,

[0165] In response to the frequency domain resources configured for the terminal to reside in the RRC disconnected state, the frequency domain position of the CFR used to receive MBS in the RRC disconnected state is determined as the second frequency domain position.

[0166] Here, the first frequency domain location is determined based on the common control resource set (CORESET). The second frequency domain location is determined based on the downlink bandwidth portion (BWP).

[0167] In one embodiment, it is determined whether frequency domain resources are configured for the terminal to reside in the RRC disconnected state. In response to the absence of configured frequency domain resources for the terminal to reside in the RRC disconnected state, the CFR used for receiving MBS in the RRC disconnected state is determined to be a first frequency domain location; the terminal receives MBS at this first frequency domain location. Alternatively, in response to the configuration of frequency domain resources for the terminal to reside in the RRC disconnected state, the CFR used for receiving MBS in the RRC disconnected state is determined to be a second frequency domain location; the terminal receives MBS at this second frequency domain location. Thus, when receiving MBS downlink services, the terminal does not need to switch back and forth between the first and second frequency domain locations, saving power consumption and improving battery life.

[0168] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0169] like Figure 7 As shown, this embodiment provides a method for determining the CFR of the received MBS, wherein the method is executed by the terminal and includes:

[0170] Step 71: Without configuring the second frequency domain position, determine the CFR for receiving MBS in the Radio Resource Control (RRC) disconnected state based on the indication of the predetermined signaling.

[0171] Here, the second frequency domain position can be the position determined based on the downlink bandwidth portion BWP.

[0172] In one embodiment, in response to the configuration of a second frequency domain location, a CFR for receiving MBS in the Radio Resource Control (RRC) disconnected state is determined based on an indication of predetermined signaling. Here, the predetermined signaling may carry different types of predetermined information or may not carry predetermined information. The predetermined information may be first information or second information.

[0173] In one embodiment, in response to a predetermined signaling message carrying first information, the frequency domain location of the CFR used for receiving MBS in the RRC disconnected state is determined as a first frequency domain location; the terminal receives MBS at the first frequency domain location. Alternatively, in response to a predetermined signaling message carrying second information, the frequency domain location of the CFR used for receiving MBS in the RRC disconnected state is determined as a second frequency domain location; the terminal receives MBS at the second frequency domain location.

[0174] In another embodiment, in response to the predetermined signaling not carrying predetermined information, the frequency domain location of the CFR used to receive MBS in the RRC disconnected state is determined to be either a first frequency domain location or a second frequency domain location; the terminal can receive MBS at either the first or second frequency domain location. This increases network flexibility. When the network wants to achieve high resource utilization, the CFR can be configured at the first frequency domain location. In this way, RedCap terminals and non-RedCap terminals can share the same CFR frequency domain location. When the network controls the terminal to save energy, the CFR frequency domain location can be configured at the same frequency as the terminal's camp location, avoiding the terminal switching between different BWPs, saving terminal power consumption, and improving terminal battery life.

[0175] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0176] like Figure 8 As shown, this embodiment provides a method for determining the CFR of the received MBS, wherein the method is executed by the terminal and includes:

[0177] Step 81: In response to the predetermined signaling carrying the first information, determine the frequency domain position of the CFR used to receive MBS in the RRC disconnected state as the first frequency domain position;

[0178] or,

[0179] In response to the predetermined signaling carrying the second information, the frequency domain position of the CFR used to receive MBS in the RRC disconnected state is determined as the second frequency domain position;

[0180] or,

[0181] In response to the fact that the predetermined signaling does not carry predetermined information, the frequency domain position of the CFR used to receive MBS in the RRC disconnected state is determined to be either the first frequency domain position or the second frequency domain position.

[0182] Here, the first frequency domain location is determined based on the common control resource set (CORESET). The second frequency domain location is determined based on the downlink bandwidth portion (BWP).

[0183] Here, the pre-defined signaling may carry different types of pre-defined information or may not carry any pre-defined information. The pre-defined information may be first information or second information. In one embodiment, in response to the pre-defined signaling carrying first information, the frequency domain location of the CFR used to receive MBS in the RRC disconnected state is determined as a first frequency domain location; the terminal receives MBS at this first frequency domain location. Alternatively, in response to the pre-defined signaling carrying second information, the frequency domain location of the CFR used to receive MBS in the RRC disconnected state is determined as a second frequency domain location; the terminal receives MBS at this second frequency domain location. In another embodiment, in response to the pre-defined signaling not carrying pre-defined information, the frequency domain location of the CFR used to receive MBS in the RRC disconnected state is determined to be either a first frequency domain location or a second frequency domain location; the terminal can receive MBS at either the first frequency domain location or the second frequency domain location. This increases network flexibility. When the network wants to achieve high resource utilization, the CFR can be configured at the first frequency domain location. In this way, RedCap terminals and non-RedCap terminals can share the same CFR frequency domain location. When the network control terminal is saving energy, the frequency domain position of the CFR can be configured to the same frequency as the terminal's camp position, avoiding the terminal switching between different BWPs, saving the terminal's power consumption, and improving the terminal's battery life.

[0184] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0185] like Figure 9 As shown, this embodiment provides a method for determining the CFR of the received MBS, wherein the method is executed by the terminal and includes:

[0186] Step 91: Without configuring the second frequency domain position, determine the CFR used to receive MBS in the Radio Resource Control (RRC) disconnected state based on the uplink BWP where the Physical Uplink Control Channel (PUCCH) carrying the MBS Hybrid Automatic Repeat Request (HARQ) feedback is located.

[0187] Here, the second frequency domain position can be the position determined based on the downlink bandwidth portion BWP.

[0188] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0189] like Figure 10As shown, this embodiment provides a method for determining the CFR of the received MBS, wherein the method is executed by the terminal and includes:

[0190] Step 101: In response to uplink HARQ feedback in the downlink transmission of MBS, determine the frequency domain position of the CFR used to receive MBS in the non-connected state of Radio Resource Control (RRC) as the second frequency domain position.

[0191] In one embodiment, the second frequency domain position is a position with the same center frequency as the uplink BWP.

[0192] In one embodiment, in response to a configured second frequency domain location, the uplink BWP containing the Physical Uplink Control Channel (PUCCH) carrying the MBS Hybrid Automatic Repeat Request (HARQ) feedback is used to determine the CFR for receiving the MBS in the RRC disconnected state. Here, the second frequency domain location can be determined as the frequency domain location for receiving the MBS in the RRC disconnected state in response to uplink HARQ feedback during downlink transmission of the MBS. This second frequency domain location has the same center frequency as the uplink BWP. Thus, in a TDD system, this ensures that the UL BWP and DL BWP have the same center frequency. Having the same center frequency reduces the need for the terminal to switch center frequencies during uplink / downlink handover, thereby saving terminal power consumption and improving battery life.

[0193] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0194] like Figure 11 As shown, this embodiment provides a method for determining the CFR of an MBS transmission, wherein the method is executed by a base station and includes:

[0195] Step 111: Determine the CFR used for transmitting MBS in the non-connected state of Radio Resource Control (RRC);

[0196] The frequency domain position of CFR corresponds to at least one of the following frequency domain positions:

[0197] The first frequency domain position is determined based on CORESET; the second frequency domain position is determined based on the downlink BWP configured for the terminal.

[0198] In one embodiment, a common frequency resource (CFR) for transmitting MBS is determined in the Radio Resource Control (RRC) disconnected state;

[0199] The frequency domain position of CFR corresponds to the first frequency domain position determined based on the common control resource set CORESET and / or the second frequency domain position determined based on the downlink bandwidth portion BWP.

[0200] Here, the terminal can be, but is not limited to, a mobile phone, tablet computer, wearable device, vehicle terminal, roadside unit (RSU), smart home terminal, industrial sensing device and / or medical device, etc. For example, a smart home terminal may include a camera, temperature acquisition device, and brightness acquisition device, etc. The terminal can be a RedCap terminal.

[0201] Here, the base station involved in this disclosure can be of various types, such as a base station for a third-generation mobile communication (3G) network, a base station for a fourth-generation mobile communication (4G) network, a base station for a fifth-generation mobile communication (5G) network, or other evolved base stations.

[0202] In one scenario embodiment, after the base station determines the CFR, it can send the CFR to the terminal, which is used by the terminal to receive the MBS. No limitations are specified here.

[0203] Here, the first frequency domain location is determined based on the common control resource set (CORESET). The second frequency domain location is determined based on the downlink bandwidth portion (BWP).

[0204] In one embodiment, the CFR for receiving MBS in the RRC disconnected state can be determined from at least one of a first frequency domain location determined based on CORESET and a second frequency domain location determined based on the downlink BWP configured for the base station. It should be noted that the determined frequency domain location of the CFR can be the first frequency domain location; or, the determined frequency domain location of the CFR can be the second frequency domain location; or, the determined frequency domain location of the CFR can be a combination of a portion of the first frequency domain location and a portion of the CFR's frequency domain location; or, the determined frequency domain location of the CFR can be other frequency domain locations associated with the first frequency domain location and / or the second frequency domain location. In short, the frequency domain location of the CFR is determined based on the first frequency domain location and the second frequency domain location, and is not limited thereto.

[0205] Here, the RRC disconnected state can be the RRC idle state and / or the RRC inactive state, but it is not limited to the RRC idle state and / or the RRC inactive state. Here, with network evolution, the RRC disconnected state can be any state in which the terminal and the base station have not established an RRC connection.

[0206] In one embodiment, a CFR for transmitting MBS is determined in the RRC idle state; MBS is transmitted on that CFR.

[0207] In one embodiment, a CFR for transmitting MBS is determined in the RRC inactive state; MBS is transmitted on this CFR.

[0208] Here, the CORESET used to determine the first frequency domain location can be selected from multiple CORESETs. For example, CORESET#0 can be selected from CORESET#0, CORESET#1, and CORESET#2 as the CORESET used to determine the first frequency domain location. It should be noted that the specific CORESET used to determine the first frequency domain location can be indicated by the network configuration, can be the default configuration (e.g., specified by a predetermined protocol), or can be determined by the base station based on its own behavior; there is no limitation here.

[0209] In one embodiment, based on the determination result of whether the network is configured with a second frequency domain location, a common frequency resource (CFR) for transmitting MBS in the non-connected state of Radio Resource Control (RRC) is determined; wherein, the frequency domain location of the CFR corresponds to a first frequency domain location determined based on the common control resource set (CORESET) and / or a second frequency domain location determined based on the downlink bandwidth portion (BWP) configured for the base station.

[0210] In one embodiment, in response to the network not configuring a second frequency domain location, the frequency domain location of the CFR used for transmitting MBS in the RRC disconnected state is determined as a first frequency domain location. The base station transmits MBS at this first frequency domain location.

[0211] In one embodiment, in response to the network configuring a second frequency domain location, the CFR used for transmitting MBS in the RRC-unconnected state is determined based on the frequency domain resource configuration in which the terminal resides in the RRC-unconnected state. Here, the CFR used for transmitting MBS in the RRC-unconnected state may be determined based on whether the network has configured a frequency domain resource configuration in which the terminal resides in the RRC-unconnected state.

[0212] In one embodiment, in response to the absence of configured frequency domain resources for the terminal to reside in the RRC disconnected state, the CFR used for transmitting MBS in the RRC disconnected state is determined as a first frequency domain location; the base station transmits MBS at this first frequency domain location.

[0213] In one embodiment, in response to the frequency domain resources configured for the terminal to reside in the RRC disconnected state, the CFR used for transmitting MBS in the RRC disconnected state is determined as a second frequency domain location; the base station transmits MBS at this second frequency domain location.

[0214] In one embodiment, in response to a second frequency domain location being configured, a CFR for transmitting MBS in the RRC disconnected state is determined based on an indication of predetermined signaling. Here, the CFR for receiving MBS in the RRC disconnected state may be determined according to the type of predetermined information carried in the predetermined signaling.

[0215] In one embodiment, in response to a predetermined signaling message carrying first information, the frequency domain location of the CFR used to transmit MBS in the RRC disconnected state is determined as a first frequency domain location; the base station transmits MBS at the first frequency domain location.

[0216] In one embodiment, in response to a predetermined signaling message carrying second information, the frequency domain location of the CFR used for transmitting MBS in the RRC disconnected state is determined as a second frequency domain location; the base station transmits MBS at this second frequency domain location. Here, the CFR used for transmitting MBS in the RRC disconnected state may be determined based on whether the predetermined signaling message carries predetermined information.

[0217] In one embodiment, in response to the predetermined signaling not carrying predetermined information, the frequency domain location of the CFR used to transmit MBS in the RRC disconnected state is determined to be a first frequency domain location or a second frequency domain location; the base station may transmit MBS at the first frequency domain location or the second frequency domain location.

[0218] In one embodiment, in response to a configured second frequency domain location, the CFR used for transmitting MBS in the RRC disconnected state is determined based on the uplink BWP where the physical uplink control channel PUCCH carrying MBS Hybrid Automatic Repeat Request (HARQ) feedback resides. Here, the second frequency domain location may be determined as the frequency domain location of the CFR used for transmitting MBS in the RRC disconnected state in response to uplink HARQ feedback during downlink transmission of MBS, where the second frequency domain location has the same center frequency as the uplink BWP.

[0219] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0220] like Figure 12 As shown, this embodiment provides a method for determining the CFR of an MBS transmission, wherein the method is executed by a base station and includes:

[0221] Step 121: Determine the CFR used to transmit MBS in the RRC non-connected state, depending on whether a second frequency domain position is configured.

[0222] Here, the second frequency domain position is the position determined based on the downlink bandwidth portion (BWP).

[0223] In one embodiment, in response to the network not configuring a second frequency domain location, the frequency domain location of the CFR used for transmitting MBS in the RRC disconnected state is determined as a first frequency domain location. The base station transmits MBS at this first frequency domain location.

[0224] In one embodiment, in response to the network configuring a second frequency domain location, the CFR used for transmitting MBS in the RRC-unconnected state is determined based on the frequency domain resource configuration of the terminal residing in the RRC-unconnected state. Here, the frequency domain resource configuration residing in the RRC-unconnected state can indicate either that frequency domain resources residing in the RRC-unconnected state are configured or that frequency domain resources are not configured in the RRC-unconnected state.

[0225] In one embodiment, in response to the absence of configured frequency domain resources for the terminal to reside in the RRC disconnected state, the CFR used for transmitting MBS in the RRC disconnected state is determined as a first frequency domain location; the base station transmits MBS at this first frequency domain location. In some possible implementations, alternatively, in response to the presence of configured frequency domain resources for the terminal to reside in the RRC disconnected state, the CFR used for transmitting MBS in the RRC disconnected state is determined as a second frequency domain location; the base station transmits MBS at this second frequency domain location. Thus, when transmitting MBS downlink services, the terminal does not need to switch back and forth between the first and second frequency domain locations, saving terminal power consumption and improving battery life.

[0226] In one embodiment, in response to the configuration of a second frequency domain location, a CFR for transmitting MBS in the connectionless state of Radio Resource Control (RRC) is determined based on an indication of predetermined signaling. Here, the predetermined signaling may carry different types of predetermined information or may not carry predetermined information. The predetermined information may be first information or second information.

[0227] In one embodiment, in response to a predetermined signaling message carrying first information, the frequency domain location of the CFR used for transmitting MBS in the RRC disconnected state is determined as a first frequency domain location; the base station transmits MBS at the first frequency domain location. Alternatively, in response to a predetermined signaling message carrying second information, the frequency domain location of the CFR used for transmitting MBS in the RRC disconnected state is determined as a second frequency domain location; the base station transmits MBS at the second frequency domain location.

[0228] In another embodiment, in response to the predetermined signaling not carrying predetermined information, the frequency domain location of the CFR used to transmit MBS in the RRC disconnected state is determined to be either a first frequency domain location or a second frequency domain location; the base station can transmit MBS at either the first or second frequency domain location. This increases network flexibility. When the network wants to achieve high resource utilization, the CFR can be configured at the first frequency domain location. In this way, RedCap terminals and non-RedCap terminals can share the same CFR frequency domain location. When the network controls the terminal to save energy, the CFR frequency domain location can be configured at the same frequency as the terminal's camp location, avoiding the terminal switching between different BWPs, saving terminal power consumption, and improving terminal battery life.

[0229] In one embodiment, in response to a configured second frequency domain location, the uplink BWP containing the Physical Uplink Control Channel (PUCCH) carrying the MBS Hybrid Automatic Repeat Request (HARQ) feedback is used to determine the CFR for receiving the MBS in the RRC disconnected state. Here, the second frequency domain location can be determined as the frequency domain location for transmitting the MBS in the RRC disconnected state in response to uplink HARQ feedback during downlink transmission of the MBS. This second frequency domain location has the same center frequency as the uplink BWP. Thus, in a TDD system, this ensures that the UL BWP and DL BWP have the same center frequency. Having the same center frequency reduces the need for the terminal to switch center frequencies during uplink / downlink handover, thereby saving terminal power consumption and improving battery life.

[0230] In this embodiment of the disclosure, the CFR of MBS transmitted in the RRC disconnected state can be adapted to the second frequency domain position, making the network configuration more flexible.

[0231] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0232] like Figure 13 As shown, this embodiment provides a method for determining the CFR of an MBS transmission, wherein the method is executed by a base station and includes:

[0233] Step 131: Without configuring the second frequency domain position, determine the frequency domain position of the CFR used to transmit MBS in the RRC non-connected state as the first frequency domain position.

[0234] Here, the first frequency domain location is determined based on the common control resource set (CORESET). The second frequency domain location is determined based on the downlink bandwidth portion (BWP).

[0235] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0236] like Figure 14 As shown, this embodiment provides a method for determining the CFR of an MBS transmission, wherein the method is executed by a base station and includes:

[0237] Step 141: With the second frequency domain location configured, determine the CFR used to transmit MBS in the Radio Resource Control (RRC) non-connected state based on the frequency domain resource configuration where the terminal resides in the RRC non-connected state.

[0238] Here, the second frequency domain position is the position determined based on the downlink bandwidth portion (BWP).

[0239] In one embodiment, in response to the absence of configured frequency domain resources for the terminal to reside in the RRC disconnected state, a first frequency domain location is determined for the CFR used to transmit MBS in the RRC disconnected state; the base station transmits MBS at this first frequency domain location. In some possible implementations, alternatively, in response to the presence of configured frequency domain resources for the terminal to reside in the RRC disconnected state, a second frequency domain location is determined for the CFR used to transmit MBS in the RRC disconnected state; the terminal transmits MBS at this second frequency domain location.

[0240] In this way, when the terminal receives MBS downlink services, it does not need to switch back and forth between the first frequency domain position and the second frequency domain position, which can save the terminal's power consumption and improve the terminal's battery life.

[0241] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0242] like Figure 15 As shown, this embodiment provides a method for determining the CFR of an MBS transmission, wherein the method is executed by a base station and includes:

[0243] Step 151: In response to the frequency domain resources that the terminal does not configure to reside in in the RRC disconnected state, determine the frequency domain position of the CFR used to transmit MBS in the RRC disconnected state as the first frequency domain position;

[0244] or,

[0245] In response to the frequency domain resources configured for the terminal to reside in the RRC disconnected state, the frequency domain position of the CFR used to transmit MBS in the RRC disconnected state is determined as the second frequency domain position.

[0246] Here, the first frequency domain location is determined based on the common control resource set (CORESET). The second frequency domain location is determined based on the downlink bandwidth portion (BWP).

[0247] In one embodiment, it is determined whether frequency domain resources are configured for the terminal to reside in the RRC disconnected state. In response to the absence of configured frequency domain resources for the terminal to reside in the RRC disconnected state, the CFR used for transmitting MBS in the RRC disconnected state is determined to be a first frequency domain location; the base station transmits MBS at this first frequency domain location. Alternatively, in response to the configuration of frequency domain resources for the terminal to reside in the RRC disconnected state, the CFR used for transmitting MBS in the RRC disconnected state is determined to be a second frequency domain location; the base station transmits MBS at this second frequency domain location. Thus, when receiving MBS downlink services, the terminal does not need to switch back and forth between the first and second frequency domain locations, saving terminal power consumption and improving battery life.

[0248] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0249] like Figure 16 As shown, this embodiment provides a method for determining the CFR of an MBS transmission, wherein the method is executed by a base station and includes:

[0250] Step 161: With the second frequency domain position configured, determine the CFR for transmitting MBS in the Radio Resource Control (RRC) disconnected state based on the indication of the predetermined signaling.

[0251] Here, the second frequency domain position can be the position determined based on the downlink bandwidth portion BWP.

[0252] In one embodiment, in response to the configuration of a second frequency domain location, a CFR for transmitting MBS in the connectionless state of Radio Resource Control (RRC) is determined based on an indication of predetermined signaling. Here, the predetermined signaling may carry different types of predetermined information or may not carry predetermined information. The predetermined information may be first information or second information.

[0253] In one embodiment, in response to a predetermined signaling message carrying first information, the frequency domain location of the CFR used for transmitting MBS in the RRC disconnected state is determined as a first frequency domain location; the base station transmits MBS at the first frequency domain location. Alternatively, in response to a predetermined signaling message carrying second information, the frequency domain location of the CFR used for transmitting MBS in the RRC disconnected state is determined as a second frequency domain location; the base station transmits MBS at the second frequency domain location.

[0254] In another embodiment, in response to the predetermined signaling not carrying predetermined information, the frequency domain location of the CFR used to transmit MBS in the RRC disconnected state is determined to be either a first frequency domain location or a second frequency domain location; the base station can transmit MBS at either the first or second frequency domain location. This increases network flexibility. When the network wants to achieve high resource utilization, the CFR can be configured at the first frequency domain location. In this way, RedCap terminals and non-RedCap terminals can share the same CFR frequency domain location. When the network controls the terminal to save energy, the CFR frequency domain location can be configured at the same frequency as the terminal's camp location, avoiding the terminal switching between different BWPs, saving terminal power consumption, and improving terminal battery life.

[0255] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0256] like Figure 17 As shown, this embodiment provides a method for determining the CFR of an MBS transmission, wherein the method is executed by a base station and includes:

[0257] Step 171: In response to the predetermined signaling carrying the first information, determine the frequency domain position of the CFR used to transmit MBS in the RRC disconnected state as the first frequency domain position;

[0258] or,

[0259] In response to the predetermined signaling carrying the second information, the frequency domain position of the CFR used to transmit MBS in the RRC disconnected state is determined as the second frequency domain position;

[0260] or,

[0261] In response to the fact that the predetermined signaling does not carry predetermined information, the frequency domain position of the CFR used to transmit MBS in the RRC disconnected state is determined to be either the first frequency domain position or the second frequency domain position.

[0262] Here, the first frequency domain location is determined based on the common control resource set (CORESET). The second frequency domain location is determined based on the downlink bandwidth portion (BWP).

[0263] Here, the pre-defined signaling may carry different types of pre-defined information or may not carry any pre-defined information. The pre-defined information may be first information or second information. In one embodiment, in response to the pre-defined signaling carrying first information, the frequency domain location of the CFR used for transmitting MBS in the RRC disconnected state is determined as a first frequency domain location; the base station transmits MBS at this first frequency domain location. Alternatively, in response to the pre-defined signaling carrying second information, the frequency domain location of the CFR used for transmitting MBS in the RRC disconnected state is determined as a second frequency domain location; the base station transmits MBS at this second frequency domain location. In another embodiment, in response to the pre-defined signaling not carrying pre-defined information, the frequency domain location of the CFR used for transmitting MBS in the RRC disconnected state is determined to be either a first frequency domain location or a second frequency domain location; the base station may transmit MBS at either the first or second frequency domain location. This increases network flexibility. When the network wants to achieve high resource utilization, the CFR can be configured at the first frequency domain location. In this way, RedCap terminals and non-RedCap terminals can share the same CFR frequency domain location. When the network control terminal is saving energy, the frequency domain position of the CFR can be configured to the same frequency as the terminal's camp position, avoiding the terminal switching between different BWPs, saving the terminal's power consumption, and improving the terminal's battery life.

[0264] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0265] like Figure 18 As shown, this embodiment provides a method for determining the CFR of an MBS transmission, wherein the method is executed by a base station and includes:

[0266] Step 181: With the second frequency domain position configured, the uplink BWP, based on the physical uplink control channel PUCCH carrying the MBS Hybrid Automatic Repeat Request (HARQ) feedback, determines the CFR used to transmit MBS in the Radio Resource Control (RRC) disconnected state.

[0267] Here, the second frequency domain position is the position determined based on the downlink bandwidth portion (BWP).

[0268] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0269] like Figure 19 As shown, this embodiment provides a method for determining the CFR of an MBS transmission, wherein the method is executed by a base station and includes:

[0270] Step 191: In response to uplink HARQ feedback in the downlink transmission of MBS, determine the frequency domain position of the CFR used to transmit MBS in the non-connected state of Radio Resource Control (RRC) as the second frequency domain position.

[0271] In one embodiment, the second frequency domain position is the position with the same center frequency as the uplink BWP.

[0272] Here, the second frequency domain position is the position determined based on the downlink bandwidth portion (BWP).

[0273] In one embodiment, in response to a configured second frequency domain location, the CFR used for transmitting MBS in the RRC disconnected state is determined based on the uplink BWP where the Physical Uplink Control Channel (PUCCH) carrying the MBS Hybrid Automatic Repeat Request (HARQ) feedback resides. Here, the frequency domain location for determining the CFR used for transmitting MBS in the RRC disconnected state may be the second frequency domain location in response to uplink HARQ feedback during downlink transmission of MBS, where the second frequency domain location has the same center frequency as the uplink BWP. Thus, in a TDD system, this ensures that the UL BWP and DL BWP have the same center frequency. Having the same center frequency reduces the need for the terminal to switch center frequencies during uplink / downlink handover, thereby saving terminal power consumption and improving terminal battery life.

[0274] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0275] like Figure 20 As shown, this embodiment provides a device for determining the CFR of an MBS (Mobile Base System), wherein the device includes:

[0276] The determination module 201 is configured to determine the common frequency resource (CFR) used for receiving MBS in the Radio Resource Control (RRC) connectionless state;

[0277] The frequency domain position of the CFR corresponds to at least one of the following frequency domain positions:

[0278] The first frequency domain position determined by CORESET;

[0279] The second frequency domain position is determined based on the downlink BWP configured for the terminal.

[0280] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0281] like Figure 21 As shown, this embodiment provides a device for determining the CFR of an MBS transmission, wherein the device includes:

[0282] Determining module 211 is configured to determine the common frequency resource (CFR) used for transmitting MBS in the Radio Resource Control (RRC) connectionless state;

[0283] The frequency domain position of the CFR corresponds to at least one of the following frequency domain positions:

[0284] The first frequency domain position determined by CORESET;

[0285] The second frequency domain position is determined based on the downlink BWP configured for the terminal.

[0286] It should be noted that those skilled in the art will understand that the methods provided in the embodiments of this disclosure can be executed alone or together with some methods in the embodiments of this disclosure or some methods in related technologies.

[0287] This disclosure provides a communication device, which includes:

[0288] processor;

[0289] Memory used to store processor-executable instructions;

[0290] The processor is configured to implement, when running executable instructions, the methods applicable to any embodiment of this disclosure.

[0291] The processor may include various types of storage media, which are non-transitory computer storage media that can continue to store information after the communication device loses power.

[0292] The processor can connect to the memory via a bus or other means to read executable programs stored in the memory.

[0293] This disclosure also provides a computer storage medium storing a computer executable program, which, when executed by a processor, implements the method of any embodiment of this disclosure.

[0294] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0295] like Figure 22 As shown, one embodiment of this disclosure provides a terminal structure.

[0296] Reference Figure 22This embodiment provides a terminal 800, which may specifically be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0297] Reference Figure 22 Terminal 800 may include one or more of the following components: processing component 802, memory 804, power supply component 806, multimedia component 808, audio component 810, input / output (I / O) interface 812, sensor component 814, and communication component 816.

[0298] Processing component 802 typically controls the overall operation of terminal 800, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the methods described above. Furthermore, processing component 802 may include one or more modules to facilitate interaction between processing component 802 and other components. For example, processing component 802 may include a multimedia module to facilitate interaction between multimedia component 808 and processing component 802.

[0299] Memory 804 is configured to store various types of data to support operation on terminal 800. Examples of this data include instructions for any application or method operating on terminal 800, contact data, phonebook data, messages, pictures, videos, etc. Memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0300] Power supply component 806 provides power to various components of terminal 800. Power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to terminal 800.

[0301] Multimedia component 808 includes a screen that provides an output interface between terminal 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of touch or swipe actions but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 808 includes a front-facing camera and / or a rear-facing camera. When terminal 800 is in an operating mode, such as a shooting mode or video mode, the front-facing camera and / or rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0302] Audio component 810 is configured to output and / or input audio signals. For example, audio component 810 includes a microphone (MIC) configured to receive external audio signals when terminal 800 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 804 or transmitted via communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

[0303] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0304] Sensor assembly 814 includes one or more sensors for providing state assessments of various aspects of terminal 800. For example, sensor assembly 814 can detect the on / off state of terminal 800, the relative positioning of components such as the display and keypad of terminal 800, changes in the position of terminal 800 or a component of terminal 800, the presence or absence of user contact with terminal 800, the orientation or acceleration / deceleration of terminal 800, and temperature changes of terminal 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 814 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0305] Communication component 816 is configured to facilitate wired or wireless communication between terminal 800 and other devices. Terminal 800 can access wireless networks based on communication standards, such as Wi-Fi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 816 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 816 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0306] In an exemplary embodiment, terminal 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0307] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, which can be executed by a processor 820 of a terminal 800 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0308] like Figure 23 As shown, one embodiment of this disclosure illustrates the structure of a base station. For example, base station 900 can be provided as a network-side device. (Refer to...) Figure 23 The base station 900 includes a processing component 922, which further includes one or more processors, and memory resources represented by a memory 932 for storing instructions, such as application programs, that can be executed by the processing component 922. The application programs stored in the memory 932 may include one or more modules, each corresponding to a set of instructions. Furthermore, the processing component 922 is configured to execute instructions to perform any of the methods described above applied to the base station.

[0309] Base station 900 may also include a power supply component 926 configured to perform power management of base station 900, a wired or wireless network interface 950 configured to connect base station 900 to a network, and an input / output (I / O) interface 958. Base station 900 can operate on an operating system stored in memory 932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™, or similar.

[0310] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims. It should be understood that the invention is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method for determining the CFR for receiving an MBS, wherein, The method is executed by a terminal, and the method includes: Determine the common frequency resource (CFR) for receiving multicast and broadcast services MBS in the Radio Resource Control (RRC) connectionless state; The frequency domain position of the CFR corresponds to at least one of the following frequency domain positions: The first frequency domain position is determined based on the common control resource set CORESET; The second frequency domain position is determined based on the downlink bandwidth portion (BWP) configured for the terminal; The step of determining the CFR used to receive MBS in the RRC non-connected state includes: determining the frequency domain position of the CFR as the first frequency domain position when the second frequency domain position is not configured.

2. The method according to claim 1, wherein, The terminal in question is the capacity-reduced terminal Redcap.

3. The method according to claim 1, wherein, The determination of the common frequency resource (CFR) for receiving MBS in the non-connected state of Radio Resource Control (RRC) includes: The CFR is determined based on whether the second frequency domain position is configured.

4. The method according to claim 1, wherein, The method further includes: When the second frequency domain location is configured, the CFR is determined based on the frequency domain resource configuration in which the terminal resides in the RRC non-connected state.

5. The method according to claim 4, wherein, The determination of the CFR based on the frequency domain resource configuration of the terminal residing in the RRC non-connected state includes: In response to the fact that no frequency domain resources are configured for the terminal to reside in the RRC non-connected state, the frequency domain location of the CFR is determined to be the first frequency domain location; or, In response to the frequency domain resources configured for the terminal to reside in the RRC non-connected state, the frequency domain position of the CFR is determined as the second frequency domain position.

6. The method according to claim 1, wherein, The method further includes: When the second frequency domain position is configured, the CFR is determined based on the indication of a predetermined signaling.

7. The method according to claim 6, wherein, The instruction based on predetermined signaling to determine the CFR includes: In response to the predetermined signaling carrying first information, the frequency domain position of the CFR is determined to be the first frequency domain position; or, In response to the predetermined signaling carrying second information, the frequency domain position of the CFR is determined to be the second frequency domain position; or, In response to the fact that the predetermined signaling does not carry predetermined information, the frequency domain position of the CFR is determined to be either a first frequency domain position or a second frequency domain position.

8. The method according to claim 1, wherein, The method further includes: When the second frequency domain position is configured, the CFR is determined based on the uplink BWP where the physical uplink control channel PUCCH carrying the MBS Hybrid Automatic Repeat Request (HARQ) feedback is located.

9. The method according to claim 8, wherein, The determination of the CFR based on the uplink BWP where the physical uplink control channel PUCCH carrying the MBS hybrid automatic repeat request (HARQ) feedback is located includes: In response to uplink HARQ feedback in the downlink transmission of the MBS, the frequency domain position of the CFR is determined to be the second frequency domain position.

10. The method according to claim 9, wherein, The second frequency domain position is the position with the same center frequency as the uplink BWP.

11. A method for determining the CFR for sending MBS, wherein, The method is executed by a base station, and the method includes: Determine the CFR used for transmitting MBS in the connectionless state of Radio Resource Control (RRC); The frequency domain position of the CFR corresponds to at least one of the following frequency domain positions: The first frequency domain position determined by CORESET; The second frequency domain position is determined based on the downlink BWP configured for the terminal; The step of determining the CFR used for transmitting MBS in the RRC disconnected state includes: determining the frequency domain position of the CFR as the first frequency domain position when the second frequency domain position is not configured.

12. The method according to claim 11, wherein, The terminal is Redcap.

13. The method according to claim 11, wherein, The determination of the common frequency resource (CFR) used for transmitting MBS in the non-connected state of Radio Resource Control (RRC) includes: The CFR is determined based on whether the second frequency domain position is configured.

14. The method according to claim 11, wherein, The method further includes: When the second frequency domain location is configured, the CFR is determined based on the frequency domain resource configuration in which the terminal resides in the RRC non-connected state.

15. The method according to claim 14, wherein, The determination of the CFR based on the frequency domain resource configuration of the terminal residing in the RRC non-connected state includes: In response to the fact that no frequency domain resources are configured for the terminal to reside in the RRC non-connected state, the frequency domain location of the CFR is determined to be the first frequency domain location; or, In response to the frequency domain resources configured for the terminal to reside in the RRC non-connected state, the frequency domain position of the CFR is determined as the second frequency domain position.

16. The method according to claim 11, wherein, The method further includes: When the second frequency domain position is configured, the CFR is determined based on the indication of a predetermined signaling.

17. The method according to claim 16, wherein, The instruction based on predetermined signaling to determine the CFR includes: In response to the predetermined signaling carrying first information, the frequency domain position of the CFR is determined to be the first frequency domain position; or, In response to the predetermined signaling carrying second information, the frequency domain position of the CFR is determined to be the second frequency domain position; or, In response to the fact that the predetermined signaling does not carry predetermined information, the frequency domain position of the CFR is determined to be either a first frequency domain position or a second frequency domain position.

18. The method according to claim 11, wherein, The method further includes: When the second frequency domain position is configured, the CFR is determined based on the uplink BWP where the physical uplink control channel PUCCH carrying the MBS Hybrid Automatic Repeat Request (HARQ) feedback is located.

19. The method according to claim 18, wherein, The determination of the CFR based on the uplink BWP where the physical uplink control channel PUCCH carrying the MBS hybrid automatic repeat request (HARQ) feedback is located includes: In response to uplink HARQ feedback in the downlink transmission of the MBS, the frequency domain position of the CFR is determined to be the second frequency domain position.

20. The method according to claim 19, wherein, The second frequency domain position is the position with the same center frequency as the uplink BWP.

21. A device for determining the CFR for receiving an MBS, wherein, The device includes: The determination module is configured to determine the CFR used to receive MBS in the Radio Resource Control (RRC) connectionless state; The frequency domain position of the CFR corresponds to at least one of the following frequency domain positions: The first frequency domain position determined by CORESET; The second frequency domain position is determined based on the downlink BWP configured for the terminal; The step of determining the CFR used to receive MBS in the RRC non-connected state includes: determining the frequency domain position of the CFR as the first frequency domain position when the second frequency domain position is not configured.

22. A means for determining the CFR for transmitting MBS, wherein, The device includes: The determination module is configured to determine the CFR used for transmitting MBS in the Radio Resource Control (RRC) connectionless state; The frequency domain position of the CFR corresponds to at least one of the following frequency domain positions: The first frequency domain position determined by CORESET; The second frequency domain position is determined based on the downlink BWP configured for the terminal; The step of determining the CFR used for transmitting MBS in the RRC disconnected state includes: determining the frequency domain position of the CFR as the first frequency domain position when the second frequency domain position is not configured.

23. A communication device, wherein, include: Memory; A processor, connected to the memory, is configured to execute computer-executable instructions stored in the memory and to implement the method of any one of claims 1 to 10 or 11 to 20.

24. A computer storage medium storing computer-executable instructions, which, when executed by a processor, enable the implementation of the method according to any one of claims 1 to 10 or 11 to 20.

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