Communication method and apparatus, device, and storage medium

Abstract

The present disclosure provides a communication method and apparatus, a device, and a storage medium. The method is executed by a terminal, and comprises: receiving a first message, wherein the first message carries configuration information of a common frequency resource (CFR) of a multicast / broadcast service (MBS) broadcast; and when the bandwidth of the CFR and the initial bandwidth part (BWP) meet a preset relationship, receiving the MBS broadcast on the CFR. Therefore, when the CFR of the MBS broadcast exceeds the radio frequency receiving capability of a terminal, the packet loss rate of the terminal in the MBS broadcast service process is reduced.

Description

Communication method, device, equipment and storage medium Technical Field

[0001] The present disclosure relates to the field of communication technologies, and in particular to communication methods, devices, equipment, and storage media. Background Art

[0002] In a communication system, the Common Frequency Resource (CFR) broadcast by the Multicast / Broadcast Service (MBS) can be larger than and completely include the initial Bandwidth Part (initial BWP). The network can send data to terminals via point-to-point (PTP) or point-to-multipoint (PTM) methods.

[0003] Summary of the Invention

[0004] The present disclosure provides a communication method, apparatus, device and storage medium.

[0005] According to a first aspect of an embodiment of the present disclosure, a communication method is proposed and executed by a terminal. The method includes: receiving a first message, wherein the first message carries configuration information of a common frequency resource CFR broadcast by a multicast / broadcast service MBS; when the bandwidth of the CFR satisfies a preset relationship with the initial partial bandwidth BWP, receiving the MBS broadcast on the CRF.

[0006] In the above method, upon receiving the first message, the terminal receives the MBS broadcast over the CFR if the bandwidth of the CFR satisfies a preset relationship with the initial partial bandwidth (BWP). This protects the MBS broadcast protocol standard when the terminal's capabilities do not support receiving the additional bandwidth, and reduces the packet loss rate during the MBS broadcast service when the CFR of the MBS broadcast exceeds the terminal's RF reception capability.

[0007] According to a second aspect of an embodiment of the present disclosure, a communication method is proposed, which is executed by a network device and includes: sending a first message, wherein the first message carries configuration information of a common frequency resource CFR broadcast by a multicast / broadcast service MBS; and sending the MBS broadcast on the CFR.

[0008] In the above method, the network device sends the CRF configuration information by sending the first message, thereby reducing the interaction of sending specific signaling; the network device implements the MBS broadcast service by sending the MBS broadcast on the CFR.

[0009] According to a third aspect of an embodiment of the present disclosure, a terminal is proposed, including a transceiver module, configured to: receive a first message, wherein the first message carries configuration information of a common frequency resource CFR broadcast by a multicast / broadcast service MBS; based on the first message, receive the MBS broadcast on the CFR when the bandwidth of the CFR is greater than and includes an initial partial bandwidth BWP.

[0010] According to a fourth aspect of an embodiment of the present disclosure, a network device is proposed, comprising a transceiver module, configured to: send a first message, wherein the first message carries configuration information of a common frequency resource CFR broadcasted by a multicast / broadcast service MBS; and send the MBS broadcast on the CFR.

[0011] According to the fifth aspect of the embodiment of the present disclosure, a communication device is proposed, which includes: a transceiver; a memory; and a processor, which is connected to the transceiver and the memory respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and is capable of executing the communication method described in any one of the first and second aspects.

[0012] According to a sixth aspect of an embodiment of the present disclosure, a storage medium is proposed, which stores instructions. When the instructions are executed on a communication device, the communication device executes the communication method as described in any one of the first and second aspects.

[0013] According to a seventh aspect of an embodiment of the present disclosure, a communication system is proposed, including a terminal and a network device, wherein the terminal is configured to implement the method described in the first aspect, and the network device is configured to implement the method described in the second aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0015] FIG1 is a schematic diagram of the architecture of some communication systems provided by embodiments of the present disclosure;

[0016] FIG2 is an interactive diagram of a communication method provided by an embodiment of the present disclosure;

[0017] FIG3 is a diagram illustrating an example of a communication situation provided by an embodiment of the present disclosure;

[0018] 4a-4c are flowcharts of some communication methods provided by embodiments of the present disclosure;

[0019] 5a-5b are flowcharts of other communication methods provided by embodiments of the present disclosure;

[0020] FIG6 is an interactive diagram of another communication method provided by an embodiment of the present disclosure;

[0021] FIG7a is an example diagram of an interaction of a communication method provided by an embodiment of the present disclosure;

[0022] FIG7 b is a schematic diagram of a timeline of a broadcast data service provided by an embodiment of the present disclosure;

[0023] FIG7c is an example diagram of interaction of another communication method provided by an embodiment of the present disclosure;

[0024] FIG8a is a schematic structural diagram of a terminal provided by an embodiment of the present disclosure;

[0025] FIG8b is a schematic diagram of the structure of a network device provided by an embodiment of the present disclosure;

[0026] FIG9a is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0027] FIG9 b is a schematic structural diagram of a chip provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] The method disclosed herein can be used to solve the technical problem that "when the CFR of the MBS broadcast exceeds the terminal's radio frequency receiving capability, the terminal has a high packet loss rate during the MBS broadcast service."

[0029] The embodiments of the present disclosure provide a communication method, apparatus, device, and storage medium.

[0030] In a first aspect, an embodiment of the present disclosure provides a communication method, which is executed by a terminal and includes:

[0031] A first message is received, wherein the first message carries configuration information of a common frequency resource CFR broadcast by a multicast / broadcast service MBS; when the bandwidth of the CFR satisfies a preset relationship with the initial partial bandwidth BWP, the MBS broadcast is received on the CRF.

[0032] In the above embodiment, upon receiving the first message, the terminal receives the MBS broadcast over the CFR when the CFR bandwidth satisfies a preset relationship with the initial partial bandwidth (BWP). This protects the MBS broadcast protocol when the terminal's capabilities do not support receiving the additional bandwidth. It also reduces the packet loss rate during the MBS broadcast service when the CFR of the MBS broadcast exceeds the terminal's RF reception capability.

[0033] In conjunction with some embodiments of the first aspect, in some embodiments, the method further includes:

[0034] When the value of the first parameter in the configuration information of the CFR satisfies the first condition, it is determined that the preset relationship is satisfied, and the preset relationship indicates that the bandwidth of the CFR is greater than and includes the initial BWP; when the value of the first parameter in the configuration information of the CFR does not meet the first condition, CORESET 0 is used as the frequency resource for MBS broadcast, wherein the first condition is that the value of the first parameter in the configuration information of the CFR is the preset value.

[0035] In the above embodiment, by determining whether the CFR configuration information satisfies the first condition and whether the CFR bandwidth is greater than and includes the initial BWP, it is determined whether the terminal continues to receive MIBS broadcast information, thereby reducing the terminal's packet loss rate during the MBS broadcast service and protecting the MBS broadcast protocol standard.

[0036] In conjunction with some embodiments of the first aspect, in some embodiments, the bandwidth of the CFR is greater than and includes at least one of the following:

[0037] Starting position of CFR Starting position with initial BWP satisfy CFR Bandwidth Bandwidth with initial BWP satisfy

[0038] Starting position of CFR Starting position with initial BWP satisfy CFR Bandwidth Bandwidth with initial BWP satisfy

[0039] Starting position of CFR Starting position with initial BWP satisfy CFR Bandwidth Bandwidth with initial BWP satisfy

[0040] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: when the physical downlink control channel PDCCH and / or physical downlink shared channel PDSCH occupied by the terminal when receiving the MBS broadcast meets the second condition, the terminal stops receiving the MBS broadcast.

[0041] In the above embodiment, it is determined whether the physical downlink control channel (PDCCH) and / or physical downlink shared channel (PDSCH) occupied by the terminal when receiving the MBS broadcast meets the second condition. This determines whether the terminal should continue to receive MIBS broadcast information, thereby reducing the packet loss rate of the terminal during the MBS broadcast service and protecting the MBS broadcast protocol standard.

[0042] In combination with some embodiments of the first aspect, in some embodiments, the second condition includes that the PDCCH and / or PDSCH partially exceeds or completely exceeds the initial BWP.

[0043] In combination with some embodiments of the first aspect, in some embodiments, stopping receiving the MBS broadcast includes: and / or stopping receiving the MBS broadcast when a second condition is met, and continuing to receive the MBS broadcast when the second condition is not met.

[0044] In the above embodiment, the terminal stops receiving the MBS broadcast when the second condition is met, and keeps receiving the MBS broadcast when the second condition is not met, thereby ensuring that the terminal can still receive the MBS broadcast and the packet loss rate of the received MBS broadcast is low.

[0045] In combination with some embodiments of the first aspect, in some embodiments, receiving the MBS broadcast on the CFR includes: receiving an MBS control channel MCCH and / or an MBS traffic channel MTCH corresponding to the MBS broadcast on the CFR.

[0046] In the above embodiment, the scope of the MBS broadcast service is expanded by receiving the MBS control channel MCCH and / or the MBS traffic channel MTCH corresponding to the MBS broadcast on the CFR.

[0047] In combination with some embodiments of the first aspect, in some embodiments, receiving the MBS control channel MCCH corresponding to the MBS broadcast on the CFR includes: based on the first message, obtaining the configuration information of the MCCH; based on the configuration information of the MCCH, receiving the PDCCH scrambled by the wireless network temporary identifier MCCH-RNTI of the MBS control channel, and the PDCCH scrambled by the MCCH-RNTI is used to carry the MCCH; based on the MCCH, obtaining the broadcast program list, and reading the broadcast-related configuration information.

[0048] In the above embodiment, the broadcast program list is obtained and broadcast-related configuration information is read through the above method, thereby laying a foundation for the implementation of the MBS broadcast service.

[0049] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: obtaining MBS broadcast session configuration information based on MCCH; configuring the physical layer, media access control MAC layer based on the MBS broadcast session configuration information, and establishing one or more communication entities.

[0050] In the above embodiment, one or more communication entities are established through the above method, thereby realizing information interaction between different systems and different entities, and implementing the MBS broadcast service.

[0051] In combination with some embodiments of the first aspect, in some embodiments, receiving the MBS service channel MTCH corresponding to the MBS broadcast on the CFR includes: receiving the PDCCH scrambled by the cluster group radio network temporary identifier G-RNTI, the PDCCH scrambled by the G-RNTI is used to schedule the PDSCH, and the PDSCH carries the MBS service channel MTCH.

[0052] In the above embodiment, the terminal receives the MBS broadcast information by receiving the PDCCH scrambled by the cluster group radio network temporary identifier G-RNTI.

[0053] In combination with some embodiments of the first aspect, in some embodiments, the method further includes: reporting terminal capabilities to the network device, where the terminal capabilities indicate that the terminal supports additional bandwidth reception.

[0054] In the above embodiment, the terminal capabilities are reported to the network device, so that the network device determines whether the terminal supports or does not support additional bandwidth reception. This allows the network device to determine whether the value of the first parameter in the first information sent is a preset value, and then execute the method proposed in the present disclosure. This reduces the packet loss rate of the terminal during the MBS broadcast service when the CFR of the MBS broadcast exceeds the terminal's radio frequency reception capability.

[0055] In combination with some embodiments of the first aspect, in some embodiments, when the terminal does not support additional bandwidth reception, the value of the first parameter in the configuration information of the CFR of the MBS broadcast carried in the first message is not a preset value.

[0056] In a second aspect, an embodiment of the present disclosure provides a communication method, which is executed by a network device and includes:

[0057] Sending a first message, where the first message carries configuration information of a common frequency resource CFR broadcast by a multicast / broadcast service MBS;

[0058] MBS broadcasts are sent on CFR.

[0059] In the above embodiment, the network device sends the CRF configuration information by sending the first message, thereby reducing the interaction of sending specific signaling; the network device implements the MBS broadcast service by sending the MBS broadcast on the CFR.

[0060] In combination with some embodiments of the second aspect, in some embodiments, the method further includes: receiving terminal capabilities reported by the terminal, where the terminal capabilities indicate that the terminal supports additional bandwidth reception.

[0061] In the above embodiment, by receiving the terminal capabilities reported by the terminal, the network device can determine whether the terminal supports or does not support additional bandwidth reception, thereby enabling the network device to determine whether the value of the first parameter in the first information sent is a preset value, and then execute the method proposed in the present disclosure to achieve a reduction in the packet loss rate of the terminal during the MBS broadcast service when the CFR of the MBS broadcast exceeds the terminal's radio frequency reception capability.

[0062] In combination with some embodiments of the second aspect, in some embodiments, the value of the first parameter in the configuration information of the CFR of the MBS broadcast carried in the first message is a preset value.

[0063] In combination with some embodiments of the second aspect, in some embodiments, when the terminal does not support additional bandwidth reception, the value of the first parameter in the configuration information of the CFR of the MBS broadcast carried in the first message is not a preset value.

[0064] In combination with some embodiments of the second aspect, in some embodiments, when the first parameter value of the configuration information of the CFR is a preset value, the CFR and the initial BWP satisfy a preset relationship.

[0065] In conjunction with some embodiments of the second aspect, in some embodiments, the preset relationship includes at least one of the following:

[0066] Starting position of CFR Starting position with initial BWP satisfy CFR Bandwidth Bandwidth with initial BWP satisfy

[0067] Starting position of CFR Starting position with initial BWP satisfy CFR Bandwidth Bandwidth with initial BWP satisfy

[0068] Starting position of CFR Starting position with initial BWP satisfy CFR Bandwidth Bandwidth with initial BWP satisfy

[0069] In combination with some embodiments of the second aspect, in some embodiments, sending the MBS broadcast on the CFR includes: sending the MBS control channel MCCH and / or the MBS traffic channel MTCH corresponding to the MBS broadcast on the CFR.

[0070] In the above embodiment, the scope of the MBS broadcast service is expanded by sending the MBS control channel MCCH and / or the MBS traffic channel MTCH corresponding to the MBS broadcast on the CFR.

[0071] In combination with some embodiments of the second aspect, in some embodiments, sending the MBS control channel MCCH corresponding to the MBS broadcast on the CFR includes: sending the PDCCH scrambled by the wireless network temporary identifier MCCH-RNTI of the MBS control channel, and the PDCCH scrambled by the MCCH-RNTI carries the MCCH.

[0072] In the above embodiment, the MBS broadcast is transmitted by transmitting the PDCCH scrambled by the MCCH-RNTI of the MBS control channel.

[0073] In combination with some embodiments of the second aspect, in some embodiments, a PDCCH scrambled by a cluster group radio network temporary identifier G-RNTI is sent, the PDCCH scrambled by the G-RNTI is used to schedule a PDSCH, and the PDSCH carries an MBS traffic channel MTCH.

[0074] In the above embodiment, the MBS broadcast is achieved by transmitting the PDCCH scrambled by the Group Radio Network Temporary Identifier (G-RNTI).

[0075] In a third aspect, an embodiment of the present disclosure proposes a terminal, including a transceiver module, configured to: receive a first message, wherein the first message carries configuration information of a common frequency resource CFR broadcast by a multicast / broadcast service MBS; when the bandwidth of the CFR satisfies a preset relationship with the initial partial bandwidth BWP, receive the MBS broadcast on the CRF.

[0076] In a fourth aspect, an embodiment of the present disclosure proposes a network device, including a transceiver module, configured to: send a first message, wherein the first message carries configuration information of a common frequency resource CFR broadcasted by a multicast / broadcast service MBS; and send the MBS broadcast on the CFR.

[0077] In a fifth aspect, an embodiment of the present disclosure proposes a communication device, which includes: a transceiver; a memory; and a processor, which is connected to the transceiver and the memory respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer-executable instructions on the memory, and is capable of executing the communication method described in the first and second aspects, and the optional implementation methods of the first and second aspects.

[0078] In a sixth aspect, an embodiment of the present disclosure proposes a storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the method described in the first aspect, the optional implementation of the first aspect, the second aspect, and the optional implementation of the second aspect can be executed.

[0079] In the seventh aspect, an embodiment of the present disclosure proposes a communication system, which includes: a terminal and a network device; wherein the terminal is configured to execute the method described in the first aspect and the optional implementation of the first aspect, and the network device is configured to execute the method described in the second aspect and the optional implementation of the second aspect.

[0080] It is understandable that the above-mentioned terminals, network devices, communication devices, communication systems, and storage media are all used to execute the methods proposed in the embodiments of the present disclosure. Therefore, the beneficial effects that can be achieved can refer to the beneficial effects in the corresponding methods and will not be repeated here.

[0081] The present disclosure provides communication methods, devices, equipment, and storage media. In some embodiments, the terms "communication method" and "information processing method" and "communication method" are interchangeable; the terms "device" and "terminal" and "network device" and "communication device" are interchangeable; and the terms "information processing system" and "communication system" are interchangeable.

[0082] The embodiments of the present disclosure are not exhaustive and are merely illustrative of some embodiments, and are not intended to be a specific limitation on the scope of protection of the present disclosure. In the absence of contradiction, each step in a certain embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a certain embodiment can also be implemented as an independent embodiment, and the order of the steps in a certain embodiment can be arbitrarily exchanged. In addition, the optional implementation methods in a certain embodiment can be arbitrarily combined; in addition, the embodiments can be arbitrarily combined. For example, some or all steps of different embodiments can be arbitrarily combined, and a certain embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0083] In each embodiment of the present disclosure, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between the embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form a new embodiment based on their inherent logical relationships.

[0084] The terms used in the embodiments of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0085] In the embodiments of the present disclosure, unless otherwise specified, elements expressed in the singular, such as "a", "an", "the", "above", "said", "the", etc., can mean "one and only one", or "one or more", "at least one", etc. For example, when using articles such as "a", "an", "the" in English in translation, the noun following the article can be understood as a singular expression or a plural expression.

[0086] In the embodiments of the present disclosure, “plurality” refers to two or more.

[0087] In some embodiments, the terms "at least one of", "at least one of", "at least one of", "one or more", "a plurality of", "multiple", etc. can be used interchangeably.

[0088] In the embodiments of the present disclosure, descriptions such as “at least one of A, B, C…”, “A and / or B and / or C…”, etc. include the situation where any one of A, B, C… exists alone, and also include any combination of any multiple of A, B, C…, and each situation can exist alone; for example, “at least one of A, B, C” includes the situation where A exists alone, B exists alone, C exists alone, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C; for example, A and / or B includes the situation where A exists alone, B exists alone, and the combination of A and B.

[0089] In some embodiments, descriptions such as "in one case A, in another case B," or "in response to one case A, in response to another case B," may include the following technical solutions depending on the situation: executing A independently of B (in some embodiments, A); executing B independently of A (in some embodiments, B); selectively executing A and B (in some embodiments, selecting between A and B); and executing both A and B (in some embodiments, A and B). The same applies when there are more branches, such as A, B, and C.

[0090] The prefixes such as "first" and "second" in the embodiments of the present disclosure are only used to distinguish different description objects and do not constitute any restrictions on the position, order, priority, quantity or content of the description objects. For the statement of the description object, please refer to the description in the context of the claims or embodiments, and no unnecessary restrictions should be imposed due to the use of prefixes. For example, if the description object is a "field," the ordinal number before the "field" in the "first field" and the "second field" does not limit the position or order between the "fields." "First" and "second" do not limit whether the "fields" they modify are in the same message, nor do they limit the order of the "first field" and the "second field." For another example, if the description object is a "level," the ordinal number before the "level" in the "first level" and the "second level" does not limit the priority between the "levels." For another example, the number of description objects is not limited by the ordinal number and can be one or more. Taking "first device" as an example, the number of "devices" can be one or more. In addition, the objects modified by different prefixes can be the same or different. For example, if the description object is "device," then the "first device" and the "second device" can be the same device or different devices, and their types can be the same or different. For another example, if the description object is "information," then the "first message" and the "second message" can be the same information or different information, and their contents can be the same or different.

[0091] In some embodiments, “including A,” “comprising A,” “used to indicate A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0092] In some embodiments, terms such as "in response to...", "in response to determining...", "in the case of...", "at the time of...", "when...", "if...", "if...", etc. can be used interchangeably.

[0093] In some embodiments, terms such as "greater than", "greater than or equal to", "not less than", "more than", "more than or equal to", "not less than", "higher than", "higher than or equal to", "not less than", and "above" can be replaced with each other, and terms such as "less than", "less than or equal to", "not greater than", "less than", "less than or equal to", "not more than", "lower than", "lower than or equal to", "not higher than", and "below" can be replaced with each other.

[0094] In some embodiments, devices, etc. can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as "device", "equipment", "device", "circuit", "network element", "node", "function", "unit", "section", "system", "network", "chip", "chip system", "entity", and "subject" can be used interchangeably.

[0095] In some embodiments, the terms "access network device (AN device)", "radio access network device (RAN device)", "base station (BS)", "radio base station" "fixed station", "node", "access point", "transmission point (TP)", "reception point (RP)", "transmission / reception point (TRP)", "panel", "antenna panel", "antenna array", "cell", "macro cell", "small cell", "femto cell", "pico cell", "sector", "cell group", "carrier", "component carrier", "bandwidth part (BWP)" and the like may be used interchangeably.

[0096] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, etc. can be used interchangeably.

[0097] In some embodiments, the access network device, the core network device, or the network device can be replaced by a terminal. For example, the various embodiments of the present disclosure can also be applied to a structure in which the communication between the access network device, the core network device, or the network device and the terminal is replaced by communication between multiple terminals (for example, it can also be called device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, it can also be set as a structure in which the terminal has all or part of the functions of the access network device. In addition, language such as "uplink" and "downlink" can also be replaced by language corresponding to communication between terminals (for example, "side"). For example, uplink channels, downlink channels, etc. can be replaced by side channels, and uplinks, downlinks, etc. can be replaced by side links.

[0098] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, the core network device, or the network device may have a structure that has all or part of the functions of the terminal.

[0099] In some embodiments, the names of information, etc. are not limited to the names described in the embodiments, and terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codeword", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0100] In some embodiments, terms such as "uplink", "uplink", "physical uplink" can be interchangeable with each other, and terms such as "downlink", "downlink", "physical downlink" can be interchangeable with each other, and terms such as "side", "sidelink", "side communication", "sidelink communication", "direct connection", "direct link", "direct communication", "direct link communication" can be interchangeable with each other.

[0101] In some embodiments, the terms "downlink control information (DCI)", "downlink (DL) assignment", "DL DCI", "uplink (UL) grant", "UL DCI" and the like may be used interchangeably.

[0102] In some embodiments, terms such as "physical downlink shared channel (PDSCH)" and "DL data" can be used interchangeably, and terms such as "physical uplink shared channel (PUSCH)" and "UL data" can be used interchangeably.

[0103] In some embodiments, the terms "radio", "wireless", "radio access network (RAN)", "access network (AN)", "RAN-based" and the like may be used interchangeably.

[0104] In some embodiments, terms such as "synchronization signal (SS)", "synchronization signal block (SSB)", "reference signal (RS)", "pilot", and "pilot signal" can be used interchangeably.

[0105] In some embodiments, terms such as "moment", "time point", "time", and "time position" can be replaced with each other, and terms such as "duration", "period", "time window", "window", and "time" can be replaced with each other.

[0106] In some embodiments, "obtain", "get", "obtain", "receive", "transmit", "bidirectional transmission", "send and / or receive" can be interchangeable, and can be interpreted as receiving from other entities, obtaining from a protocol, obtaining by self-processing, autonomous implementation, etc.

[0107] In some embodiments, terms such as "send", "transmit", "report", "download", "transmit", "bidirectional transmission", "send and / or receive" can be used interchangeably.

[0108] In some embodiments, "predetermined" and "preset" can be interpreted as pre-specified in a protocol, etc., or can be interpreted as a pre-set action performed by a device, etc.

[0109] In some embodiments, determining may be interpreted as judging, calculating, computing, processing, deriving, investigating, searching, looking up, retrieving, ascertaining, receiving, transmitting, inputting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, “assuming,” “expecting,” “considering,” broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, and the like, but is not limited thereto.

[0110] In some embodiments, the determination or judgment can be performed by a value represented by 1 bit (0 or 1), or by a true or false value (Boolean value) represented by true or false, or by comparison of numerical values ​​(for example, comparison with a predetermined value), but is not limited thereto.

[0111] In some embodiments, "network" can be interpreted as devices included in the network (eg, access network equipment, core network equipment, etc.).

[0112] In some embodiments, "not expecting to receive" can be interpreted as not receiving on time domain resources and / or frequency domain resources, or as not performing subsequent processing on the data after receiving it; "not expecting to send" can be interpreted as not sending, or as sending but not expecting the recipient to respond to the content sent.

[0113] In some embodiments, obtaining data, information, etc. may comply with the laws and regulations of the country where the data is obtained.

[0114] In some embodiments, data, information, etc. may be obtained with the user's consent.

[0115] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present disclosure. As shown in Figure 1, the communication system 100 may include a terminal 101 and a network device 102. The network device 102 may include at least one of an access network device and a core network device.

[0116] In some embodiments, the terminal 101 includes, for example, a mobile phone, a wearable device, an Internet of Things device, a car with communication function, a smart car, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical surgery, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, and at least one of a wireless terminal device in a smart home, but is not limited thereto.

[0117] In some embodiments, the access network device is, for example, a node or device that accesses a terminal to a wireless network. The access network device may include an evolved NodeB (eNB), a next generation evolved NodeB (ng-eNB), a next generation NodeB (gNB), a node B (NB), a home node B (HNB), a home evolved nodeB (HeNB), a wireless backhaul device, a radio network controller (RNC), a base station controller (BSC), a base transceiver station (BTS), a base band unit (BBU), a mobile switching center, a base station in a 6G communication system, an open base station (Open RAN), a cloud base station (Cloud RAN), a base station in other communication systems, and at least one of an access node in a wireless fidelity (WiFi) system, but is not limited thereto.

[0118] In some embodiments, the technical solution of the present disclosure can be applied to the Open RAN architecture. In this case, the interfaces between or within the access network devices involved in the embodiments of the present disclosure can be transformed into internal interfaces of the Open RAN, and the processes and information interactions between these internal interfaces can be implemented through software or programs.

[0119] In some embodiments, the access network device can be composed of a centralized unit (CU) and a distributed unit (DU), where the CU can also be called a control unit. The CU-DU structure can be used to split the protocol layer of the access network device, with the functions of some protocol layers centrally controlled by the CU, and the functions of the remaining part or all of the protocol layers distributed in the DU, which is centrally controlled by the CU, but is not limited to this.

[0120] In some embodiments, a core network device may be a single device comprising one or more network elements, or may be a plurality of devices or a group of devices, each comprising all or part of one or more network elements. A network element may be virtual or physical. The core network may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), and a Next Generation Core (NGC).

[0121] In some embodiments, the above-mentioned one or more network elements may include, for example: Policy Control Function (PCF), Application Function (AF), Network Application Function (NAF), Authentication and Key management for Applications Anchor Function (AAnF), Bootstrapping Server Functionality (BSF), Access and Mobility Management Function (AMF), User Plane Function (UPF), Session Management Function (SMF), Mobility Management Entity (MME), etc.

[0122] It can be understood that the communication system described in the embodiment of the present disclosure is for the purpose of more clearly illustrating the technical solution of the embodiment of the present disclosure, and does not constitute a limitation on the technical solution proposed in the embodiment of the present disclosure. Ordinary technicians in this field can know that with the evolution of the system architecture and the emergence of new business scenarios, the technical solution proposed in the embodiment of the present disclosure is also applicable to similar technical problems.

[0123] The following embodiments of the present disclosure may be applied to the communication system 100 shown in Figure 1, or a portion thereof, but are not limited thereto. The entities shown in Figure 1 are illustrative only. The communication system may include all or part of the entities shown in Figure 1, or may include other entities outside of Figure 1. The number and form of the entities may be arbitrary. The connection relationship between the entities is illustrative only. The entities may be connected or disconnected, and the connection may be in any manner, including direct or indirect, wired or wireless.

[0124] FIG2 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in FIG2 , the embodiment of the present disclosure relates to a communication method for use in a communication system 100, which may include a terminal 101 and a network device 102. The method includes:

[0125] Step 2101: The network device 102 sends a first message to the terminal 101.

[0126] In some embodiments, the terminal 101 may obtain the first message. For example, the terminal 101 may receive the first message sent by the network device 102.

[0127] In some embodiments, the first message may be used to indicate relevant information or parameters of a Multimedia Broadcast Service (MBS).

[0128] In some embodiments, the present disclosure does not limit the name of the first message, which may be, for example, "downlink message", "system message", etc. The present disclosure also does not limit the form of the first message.

[0129] In some embodiments, the first message may be a system message, for example, the first message may be a Master Information Block (MIB) or a System Information Block (SIB). Exemplarily, the system information block may be specifically a system message 20 (SIB20).

[0130] In some embodiments, the first message may also be other downlink messages, for example, the first message is an RRC message or a downlink control message, which is not limited in the present disclosure.

[0131] In some embodiments, the first message carries configuration information for the common frequency resource (CFR) of the MBS broadcast. The first message may also carry other configuration information related to the MBS broadcast service, which is not limited in this disclosure. The first message may also carry information related to other services, which is also not limited in this disclosure.

[0132] In some embodiments, the configuration information of the CFR broadcast by the MBS may be carried by the first message or by other messages, which is not limited in the present disclosure.

[0133] In some embodiments, the configuration information of the CFR of the MBS broadcast is used to indicate resource configuration for the MBS broadcast, for example, information for configuring the MBS traffic channel (MTCH) and / or MBS control channel (MCCH) of the MBS broadcast.

[0134] In some embodiments, the present disclosure does not limit the name of the configuration information of the CFR of the MBS broadcast, which may be "CFR configuration information", "resource configuration information", "MBS broadcast service configuration information", etc.

[0135] In some embodiments, the CFR configuration information broadcast by the MBS may be cfr-ConfigMCCH-MTCH.

[0136] In some embodiments, the CFR configuration information may be configured by the network. For example, the terminal may receive a message or signaling sent by a network device, which carries the configuration information. In some optional embodiments, the configuration information may be agreed upon or predefined by a protocol, and the terminal may obtain the configuration information through the protocol agreement or predefined method. This disclosure is not limited to this.

[0137] Step 2102: Terminal 101 determines whether the configuration information of the CFR satisfies a first condition.

[0138] In some embodiments, terminal 101 may determine whether the CFR configuration information meets the first condition based on the first message. Alternatively, terminal 101 may read the CFR configuration information of the MBS broadcast carried in the first message and determine whether the configuration information meets the first condition.

[0139] In some embodiments, the first condition is that the first parameter value of the CFR configuration information is a preset value. Optionally, if the first parameter value of the CFR configuration information is the preset value, the first condition is met, otherwise, the first condition is not met.

[0140] In some embodiments, the name of the first parameter is not limited, and it can be "first field", "first information", "first configuration value", etc.

[0141] In some embodiments, the CFR configuration information of the MBS broadcast may include multiple parameters, for example, may include a first parameter, which may be used to indicate or configure the broadcast location and bandwidth. For example, in some embodiments, the first parameter may be locationAndBandwidthBroadcast.

[0142] In some embodiments, the first parameter can have multiple values. For example, the first parameter locationAndBandwidthBroadcast can take a preset value. In some embodiments, the preset value can be locationAndBandwidth. When the first parameter locationAndBandwidthBroadcast = locationAndBandwidth, it indicates that the CFR bandwidth of the MBS broadcast is greater than and completely includes the initial bandwidth part (initial BandWidth Part, initial BWP). In some embodiments, the initial BWP is the initial downlink BWP.

[0143] In some embodiments, the value "locationAndBandwidth" is used to configure the CFR to have a first bandwidth that is greater than and completely includes the bandwidth for the initial DL BWP and CORESET#0 configured in SIB1.

[0144] It is understood that the initial BWP includes Control Resource Set #0 (CORESET #0). In other words, "the CFR bandwidth of the MBS broadcast is greater than and completely includes the initial BWP" means "the CFR bandwidth of the MBS broadcast is greater than and completely includes the initial BWP and CORESET #0."

[0145] In some embodiments, the terminal 101 may obtain the initial BWP and CORESET#0 by desynchronizing the synchronization signal and PBCH block (Synchronization signal / PBCH block, SSB).

[0146] In some embodiments, "the CFR bandwidth of the MBS broadcast is greater than and completely includes the initial BWP" or "the CFR bandwidth of the MBS broadcast is greater than and completely includes the initial BWP and CORESET#0" indicates that the CFR bandwidth of the MBS broadcast exceeds the RF bandwidth reception capability of the terminal.

[0147] Optionally, the first parameter may not be a preset value, which may indicate that the CFR bandwidth of the MBS broadcast is less than or equal to or partially includes the initial BWP and CORESET#0.

[0148] In some embodiments, if "locationAndBandwidth" is missing, the CFR used for broadcast has the same location and size as CORESET#0.

[0149] In some embodiments, if the terminal 101 determines that the first condition is satisfied, it may be determined that the bandwidth of the CFR satisfies a preset relationship with the initial partial band BWP, and the bandwidth satisfying the CFR is greater than and includes the initial BWP. "Include" may mean "fully contain."

[0150] In some embodiments, the preset relationship includes at least one of the following:

[0151] 1) The starting position of the CFR Starting position with the initial BWP satisfy The bandwidth of the CFR Bandwidth with the initial BWP satisfy

[0152] In some embodiments, as shown in FIG3 , FIG3 (a) shows that the MBS broadcast CFR and the starting position of the initial downlink BWP meet Bandwidth size meets The bandwidth of the MBS broadcast CFR is larger than the initial downlink BWP.

[0153] It should be understood that “Point A” in the figure can serve as a common reference point for resource block grids.

[0154] 2) The starting position of the CFR Starting position with the initial BWP satisfy The bandwidth of the CFR Bandwidth with the initial BWP satisfy

[0155] In some embodiments, as shown in FIG3 , FIG3( b ) shows that the MBS broadcast CFR and the starting position of the initial downlink BWP meet Bandwidth size meets The bandwidth of the MBS broadcast CFR is larger than the initial downlink BWP.

[0156] 3) The starting position of the CFR Starting position with the initial BWP satisfy The bandwidth of the CFR Bandwidth with the initial BWP satisfy

[0157] In some embodiments, as shown in FIG3 , FIG3( c ) shows that the MBS broadcast CFR and the starting position of the initial downlink BWP meet Bandwidth size meets The bandwidth of the MBS broadcast CFR is equal to the initial downlink BWP.

[0158] In some embodiments, “the bandwidth of the CFR is greater than and includes the initial BWP” may be “the bandwidth of the CFR is greater than or equal to and includes the initial BWP”.

[0159] Step 2103: Terminal 101 receives MBS broadcast on CFR.

[0160] In some embodiments, the terminal 101 may receive the MBS broadcast on the CRF when the bandwidth of the CFR and the initial bandwidth satisfy the above-mentioned preset relationship.

[0161] In some embodiments, the terminal 101 may receive the MBS broadcast on the CFR if it is determined that the configuration information of the CFR satisfies the first condition.

[0162] Optionally, in some embodiments, when the value of the first parameter in the CFR configuration information does not satisfy the first condition, the terminal 101 may use CORESET 0 as the frequency resource for the MBS broadcast. In other words, when the value of the first parameter in the CFR configuration information is not a preset value, the terminal 101 may use CORESET 0 for MBS broadcast reception.

[0163] Optionally, since the CFR bandwidth received by the terminal 101 exceeds the terminal's RF receiving capability when the first condition is met, the terminal 101 may stop receiving the MBS broadcast-related channels (e.g., PDCCH and / or PDSCH) when the reception configuration (e.g., bandwidth) of the MBS broadcast-related channels (e.g., PDCCH and / or PDSCH) exceeds the terminal capability, and continue to receive the MBS broadcast-related channels within a time period that does not exceed the terminal's receiving capability.

[0164] Under this solution, for MBS broadcasts, if the CFR configuration received by a terminal exceeds its receiving capabilities (for example, the CFR bandwidth exceeds the terminal's supported bandwidth), the terminal may receive the broadcast in some cases but not in others, resulting in significant packet loss for the MBS broadcast service. This solution can prevent this issue. Furthermore, networks configure CFR with a relatively large bandwidth to support high-traffic services, but the network cannot guarantee that the terminal's bandwidth capabilities will be met. Terminals will only receive MBS broadcasts if their radio frequency capabilities are met. Therefore, this solution allows for high-traffic services to be supported while avoiding packet loss, thus protecting the CFR protocol standard for MBS broadcasts.

[0165] In some embodiments, when the terminal 101 determines that the first condition is not met, it means that the radio frequency capability of the terminal 101 is greater than or equal to the bandwidth of the CFR, then the terminal 101 can fully receive the MBS broadcast and the above problem does not occur.

[0166] In some embodiments, "the terminal 101 receives the MBS broadcast on the CFR" may refer to receiving the MCCH and / or MTCH corresponding to the MBS broadcast on the CFR.

[0167] Optionally, the terminal 101 may receive the MCCH by receiving a physical downlink control channel (PDCCH) scrambled by the radio network temporary identity (MCCH-RNTI) of the MBS control channel. In other words, the terminal 101 receives the PDCCH scrambled by the radio network temporary identity MCCH-RNTI of the MBS control channel, and the PDCCH scrambled by the MCCH-RNTI carries the MCCH.

[0168] Optionally, the terminal 101 may receive the MTCH by receiving a physical downlink shared channel (PDSCH) scheduled by a PDCCH scrambled by a group radio network temporary identifier (Group RNTI, G-RNTI). In other words, the terminal 101 receives a PDCCH scrambled by a group radio network temporary identifier G-RNTI, where the PDCCH scrambled by the G-RNTI is used to schedule a PDSCH, which carries an MBS traffic channel MTCH.

[0169] In some embodiments, "a terminal receiving MBS broadcasts on a CFR" may mean that the terminal "does not receive" or "does not intend to receive" MBS broadcasts outside of the CFR. Specifically, during MBS transmission scheduling, the terminal does not intend to receive PDCCHs or corresponding PDSCHs scrambled with G-RNTIs or MCCH-RNTIs outside of the CFR. In other words, the terminal can only receive MBS broadcasts on the CFR.

[0170] In some embodiments, for the terminal 101 to receive the MCCH, the terminal 101 receiving the MBS control channel MCCH corresponding to the MBS broadcast on the CFR may include the following steps:

[0171] Acquire configuration information of the MCCH based on the first message;

[0172] receiving, based on the configuration information of the MCCH, a PDCCH scrambled by a radio network temporary identifier MCCH-RNTI of an MBS control channel, where the PDCCH scrambled by the MCCH-RNTI carries the MCCH;

[0173] Based on the MCCH, a broadcast program list is obtained, and broadcast-related configuration information is read.

[0174] In some embodiments, for the terminal 101 to receive the MCCH, the terminal 101 receiving the MBS control channel MCCH corresponding to the MBS broadcast on the CFR may further include the following steps:

[0175] Based on the MCCH, acquiring MBS broadcast session configuration information;

[0176] Based on the MBS broadcast session configuration information, a physical layer and a media access control (MAC) layer are configured, and one or more communication entities are established.

[0177] The communication entities may include but are not limited to Radio Link Control (RLC), Packet Data Convergence Protocol (PDCP), and Service Data Adaptation Protocol (SDAP) entities.

[0178] Specifically, the terminal 101 can receive the configuration of the broadcast session and the broadcast session data through MCCH in the three states of connected state / inactive state / idle state (RRC CONNECTED / INACTIVE / IDLE). The terminal 101 can obtain the configuration of MCCH by receiving the system information SIB20, so as to obtain the frequency domain range in which the MCCH is received. The corresponding MCCH is indicated by the PDCCH scrambled by MCCH-RNTI. MCCH carries the MBSBroadcastConfiguration message, which indicates the MBS broadcast sessions provided in the cell and the corresponding scheduling-related information of these sessions. The MBSBroadcastConfiguration message may also include a list of neighboring cells that provide the same broadcast MBS service as the current cell. The configuration information required for the terminal 101 to receive MCCH is provided by SIB20. The terminal 101 can further obtain the MBS broadcast session configuration by receiving MC CH, and configure the physical layer, MAC, and establish the corresponding RLC, PDCP, and SDAP entities through the parameters in the session configuration.

[0179] In some embodiments, for the terminal 101 to receive the MTCH, the terminal 101 receiving the MTCH corresponding to the MBS broadcast on the CFR may include the following steps:

[0180] A PDCCH scrambled by a Cluster Radio Network Temporary Identifier (G-RNTI) is received, where the PDCCH scrambled by the G-RNTI is used to schedule a PDSCH, where the PDSCH carries an MBS traffic channel (MTCH).

[0181] Step 2104: The terminal 101 determines whether the physical downlink control channel PDCCH and / or the physical downlink shared channel PDSCH occupied when receiving the MBS broadcast meets the second condition.

[0182] In some embodiments, the terminal 101 may determine whether the second condition is met after determining whether the first condition is met.

[0183] In some embodiments, the terminal 101 may determine whether the second condition is met when the first condition is met.

[0184] In some embodiments, the second condition includes that the PDCCH and / or the PDSCH occupied by the terminal 101 when receiving the MBS broadcast exceeds the initial BWP.

[0185] In some embodiments, “exceeding the initial BWP” may mean completely exceeding or partially exceeding, which is not limited in this disclosure.

[0186] In some embodiments, the terminal 101 may determine whether a second condition is met when the first condition is met, and if the second condition is not met, continue to receive the MBS broadcast; if the second condition is met, stop receiving the MBS broadcast.

[0187] In some embodiments, the determination of whether the second condition is satisfied in step 2104 may be performed continuously. In other words, the terminal 101 may perform the determination of the second condition multiple times during the process of receiving the MBS broadcast.

[0188] Step 2105: Terminal 101 stops receiving MBS broadcast.

[0189] In some embodiments, the terminal 101 may stop receiving the MBS broadcast if it is determined in step 2104 that the second condition is satisfied.

[0190] In some embodiments, stopping receiving the MBS broadcast includes:

[0191] The receiving of the MBS broadcast is stopped when the second condition is met, and the receiving of the MBS broadcast is continued when the second condition is not met.

[0192] In other words, the terminal 101 can continue to receive MBS broadcasts. When the reception configuration (e.g., bandwidth) of MBS broadcast-related channels (e.g., PDCCH and / or PDSCH) exceeds the terminal capability, the terminal stops receiving the MBS broadcast-related channels at a time exceeding the terminal reception capability (i.e., the terminal continues to receive the MBS broadcast-related channels at a time that does not exceed the terminal reception capability).

[0193] In some embodiments, the explanation of “keeping receiving” the MBS broadcast is similar to the explanation of “receiving” the MBS broadcast in step 2103 , which will not be repeated here.

[0194] In some embodiments, step 2105 can be performed independently. In other words, terminal 101 directly stops receiving MBS broadcasts without determining whether the first condition and / or the second condition are met, thereby reducing the possibility of large-scale packet loss in the terminal's MBS broadcast service and protecting the CFR protocol standard for MBS broadcasts.

[0195] Step 2106: Terminal 101 reports terminal capabilities.

[0196] In some embodiments, the terminal 101 may send its own terminal capabilities to the network device 102 .

[0197] In some embodiments, the terminal capability may indicate whether the terminal supports or does not support extra bandwidth reception. Preferably, the terminal 101 may report its capability of supporting extra bandwidth reception to the network device 102.

[0198] In some embodiments, the terminal supports additional bandwidth reception, that is, when the CFR exceeds the radio frequency capability of the terminal, the terminal still supports reception on the additional bandwidth.

[0199] In some embodiments, when the terminal supports extra bandwidth reception, the value of the first parameter in the configuration information of the CFR of the MBS broadcast carried in the first message is a preset value.

[0200] In some embodiments, if the terminal capability reported by terminal 101 indicates support for additional bandwidth reception, the first parameter value of the CFR configuration information carried in the first message sent by network device 102 to terminal 101 may be a preset value. For example, if terminal 101 supports additional bandwidth reception and notifies network device 102, network device 102 may configure locationAndBandwidthBroadcast of cfr-ConfigMCCH-MTCH in SIB20 to locationAndBandwidth, indicating that the CFR bandwidth broadcast by the MBS is greater than and completely includes the initial BWP.

[0201] In some embodiments, when the terminal does not support extra bandwidth reception, the value of the first parameter in the configuration information of the CFR of the MBS broadcast carried in the first message is not a preset value.

[0202] In some embodiments, if terminal 101 does not support extra bandwidth reception, terminal 101 does not report terminal capabilities to network device 102, or the terminal capabilities reported by terminal 101 to network device 102 indicate that extra bandwidth reception is not supported, then the value of the first parameter of the CFR configuration information carried in the first message sent by network device 102 to terminal 101 is not a preset value. For example, if terminal 101 does not support extra bandwidth reception, network device 102 may configure locationAndBandwidthBroadcast of cfr-ConfigMCCH-MTCH in SIB20 to not be locationAndBandwidth.

[0203] In some optional embodiments, the terminal 101 may send the terminal capability to the network device 102 via uplink signaling, and may send it together with signaling carrying other information, or may send it separately, which is not limited in this disclosure.

[0204] In some embodiments, step 2106 may be an optional step. The network device 102 may send the first message without knowing the capability of the terminal 101, which is not limited in the present disclosure.

[0205] In some embodiments, the execution order of step 2106 is not limited, and it can be executed before step 2101 or after step 2105.

[0206] In some embodiments, steps 2104-2105 may be optional steps. That is, after determining that the first condition is met, the terminal 101 no longer determines whether the second condition is met.

[0207] In some embodiments, steps 2102 to 2104 may be optional steps, that is, the terminal 101 may stop receiving the MBS broadcast directly without making any judgment.

[0208] In some embodiments, the above optional steps mean that one step or multiple steps can be performed, and one or more of these steps can be omitted or replaced in different embodiments.

[0209] The communication method involved in the embodiment of the present disclosure may include at least one of steps 2101 to 2106. For example, step 2101 can be implemented as an independent embodiment, steps 2101+2102+2103 can be implemented as an independent embodiment, steps 2101+2103 can be implemented as an independent embodiment, steps 2101+2102+2103+2104+2105 can be implemented as an independent embodiment, steps 2101+2102+2105 can be implemented as an independent embodiment, steps 2101+2105 can be implemented as an independent embodiment, and steps 2101+2106 can be implemented as an independent embodiment. The present invention can be implemented as an independent embodiment, step 2101+2102+2103+2106 can be implemented as an independent embodiment, step 2101+2103+2106 can be implemented as an independent embodiment, step 2101+2102+2103+2104+2105+2106 can be implemented as an independent embodiment, step 2101+2102+2105+2106 can be implemented as an independent embodiment, but is not limited to this.

[0210] In some embodiments, steps 2102 and 2104 may be performed in an interchanged order or simultaneously.

[0211] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0212] The method provided by the present disclosure can: (1) provide protection for the MBS broadcast protocol standard when the terminal capability does not support additional bandwidth reception; and (2) reduce the problem of large-scale packet loss in the terminal during the MBS broadcast service when the CFR of the MBS broadcast exceeds the terminal's RF reception capability.

[0213] FIG4a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4a, the embodiment of the present disclosure relates to a communication method for terminal 101, the method comprising:

[0214] Step 4101: Receive the first message.

[0215] The optional implementation of step 4101 can refer to the optional implementation of step 2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0216] In some embodiments, the terminal 101 may receive a first message sent by the network device 102, but is not limited thereto and may also receive a first message sent by other entities.

[0217] In some embodiments, terminal 101 may obtain a first message specified by a protocol.

[0218] In some embodiments, the terminal 101 receives the first message via an upper layer(s).

[0219] In some embodiments, terminal 101 performs processing to obtain the first message.

[0220] In some embodiments, the first message carries configuration information of common frequency resources CFR broadcast by the multicast / broadcast service MBS.

[0221] In some embodiments, step 4101 is omitted, and the terminal 101 autonomously implements the function indicated by the first message, or the above function is default or acquiescent.

[0222] Step 4102: Determine whether the configuration information of the CFR meets the first condition.

[0223] The optional implementation of step 4102 can refer to the optional implementation of step S2102 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0224] In some embodiments, the first condition is that the first parameter of the CFR configuration information takes a preset value.

[0225] In some embodiments, the terminal 101 determines that the configuration information of the CFR satisfies the first condition. The terminal 101 may determine that the bandwidth of the CFR is greater than and includes the initial BWP.

[0226] In some embodiments, step 4102 is omitted and the above functions are default or by default.

[0227] Step 4103: Receive MBS broadcast on CFR.

[0228] The optional implementation of step 4103 can refer to the optional implementation of step 2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0229] In some embodiments, terminal 101 may receive MBS broadcasts on CFR.

[0230] In some embodiments, the terminal 101 may receive the MBS broadcast on the CFR based on the first message when the bandwidth of the CFR is greater than and includes the initial partial bandwidth BWP, but is not limited thereto. The terminal 101 may also receive the MBS broadcast on the CFR in other situations based on other messages.

[0231] In some embodiments, step 4103 is omitted and the above functions are default or by default.

[0232] Step 4104: Determine whether the physical downlink control channel PDCCH and / or the physical downlink shared channel PDSCH occupied by the terminal when receiving the MBS broadcast meets the second condition.

[0233] The optional implementation of step 4104 can refer to the optional implementation of step 2104 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0234] In some embodiments, the second condition includes the PDCCH and / or PDSCH partially exceeding or completely exceeding the initial BWP.

[0235] In some embodiments, step 4104 is omitted and the above functions are default or by default.

[0236] Step 4105: Stop receiving MBS broadcast.

[0237] The optional implementation of step 4105 can refer to the optional implementation of step 2105 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0238] In some embodiments, if the terminal 101 determines that the physical downlink control channel PDCCH and / or the physical downlink shared channel PDSCH occupied by the terminal when receiving the MBS broadcast meets the second condition, the terminal 101 may stop receiving the MBS broadcast.

[0239] In some embodiments, step 4105 is omitted and the above functions are default or by default.

[0240] Step 4106: Report terminal capabilities.

[0241] The optional implementation of step 4106 can refer to the optional implementation of step 2106 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0242] In some embodiments, the terminal 101 reports the terminal capabilities to the network device 102, but is not limited thereto and the terminal capabilities may also be reported to other entities.

[0243] In some embodiments, the terminal capabilities indicate that the terminal supports extra bandwidth reception.

[0244] In some embodiments, step 4106 is omitted and the above functions are default or by default.

[0245] The communication method according to the embodiments of the present disclosure may include at least one of steps 4101 to 4106. For example, step 4101 may be implemented as an independent embodiment, step 4103 may be implemented as an independent embodiment, steps 4101+4102+4104+4105 may be implemented as an independent embodiment, and steps 4101+4102+4103 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0246] In some embodiments, steps 4102 and 4104 may be performed in an interchanged order or simultaneously.

[0247] In some embodiments, step 4102, step 4103, step 4104, step 4105, and step 4106 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0248] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, the optional methods or optional examples can be arbitrarily combined, and can be arbitrarily combined with any steps of other embodiments or other examples.

[0249] FIG4 b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4 b , the present disclosure embodiment relates to a communication method for terminal 101, the method comprising:

[0250] Step 4201: Receive the first message.

[0251] The optional implementation of step 4201 can refer to step 2101 in Figure 2, the optional implementation of step 4101 in Figure 4a, and other related parts in the embodiments involved in Figures 2 and 4a, which will not be repeated here.

[0252] In some embodiments, the terminal 101 may receive a first message sent by the network device 102, but is not limited thereto and may also receive a first message sent by other entities.

[0253] In some embodiments, terminal 101 may obtain a first message specified by a protocol.

[0254] In some embodiments, the terminal 101 receives the first message via an upper layer(s).

[0255] In some embodiments, terminal 101 performs processing to obtain the first message.

[0256] In some embodiments, the first message carries configuration information of common frequency resources CFR broadcast by the multicast / broadcast service MBS.

[0257] In some embodiments, step 4201 is omitted, and the terminal 101 autonomously implements the function indicated by the first message, or the above function is default or acquiescent.

[0258] Step 4202: Receive MBS broadcast on CFR.

[0259] The optional implementation of step 4202 can refer to step 2103 in Figure 2, the optional implementation of step 4103 in Figure 4a, and other related parts in the embodiments involved in Figures 2 and 4a, which will not be repeated here.

[0260] In some embodiments, terminal 101 may receive MBS broadcasts on CFR.

[0261] In some embodiments, the terminal 101 may receive the MBS broadcast on the CFR based on the first message when the bandwidth of the CFR is greater than and includes the initial partial bandwidth BWP, but is not limited thereto. The terminal 101 may also receive the MBS broadcast on the CFR in other situations based on other messages.

[0262] In some embodiments, step 4202 is omitted and the above functions are default or by default.

[0263] Step 4203: Stop receiving MBS broadcast.

[0264] The optional implementation of step 4203 can refer to step 2105 in Figure 2, the optional implementation of step 4105 in Figure 4a, and other related parts in the embodiments involved in Figures 2 and 4a, which will not be repeated here.

[0265] In some embodiments, if the terminal 101 determines that the physical downlink control channel PDCCH and / or the physical downlink shared channel PDSCH occupied by the terminal when receiving the MBS broadcast meets the second condition, the terminal 101 may stop receiving the MBS broadcast.

[0266] In some embodiments, the second condition includes the PDCCH and / or PDSCH partially exceeding or completely exceeding the initial BWP.

[0267] In some embodiments, step 4203 is omitted and the above functions are default or by default.

[0268] Step 4204: Report terminal capabilities.

[0269] The optional implementation of step 4204 can refer to step 2106 in Figure 2, the optional implementation of step 4106 in Figure 4a, and other related parts in the embodiments involved in Figures 2 and 4a, which will not be repeated here.

[0270] In some embodiments, the terminal 101 reports the terminal capabilities to the network device 102, but is not limited thereto and the terminal capabilities may also be reported to other entities.

[0271] In some embodiments, the terminal capabilities indicate that the terminal supports extra bandwidth reception.

[0272] In some embodiments, step 4204 is omitted and the above functions are default or by default.

[0273] For a detailed description of steps 4201 - 4204 , please refer to the embodiment shown in FIG. 2 .

[0274] The communication method involved in the embodiments of the present disclosure may include at least one of steps 4201 to 4204. For example, step 4201 may be implemented as an independent embodiment, step 4204 may be implemented as an independent embodiment, steps 4101+4102+4103 may be implemented as an independent embodiment, and steps 4102+4103+4104 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0275] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, and the optional methods or optional examples can be arbitrarily combined and can be arbitrarily combined with other embodiments or examples.

[0276] FIG4c is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG4c, the embodiment of the present disclosure relates to a communication method for terminal 101, the method comprising:

[0277] Step 4301: Receive the first message.

[0278] The optional implementation of step 4301 can refer to the optional implementation of step 2101 in Figure 2, step 4101 in Figure 4a, step 4201 in Figure 4b, and other related parts in the embodiments involved in Figures 2, 4a, and 4b, which will not be repeated here.

[0279] In some embodiments, the terminal 101 may receive a first message sent by the network device 102, but is not limited thereto and may also receive a first message sent by other entities.

[0280] In some embodiments, terminal 101 may obtain a first message specified by a protocol.

[0281] In some embodiments, the terminal 101 receives the first message via an upper layer(s).

[0282] In some embodiments, terminal 101 performs processing to obtain the first message.

[0283] In some embodiments, the first message carries configuration information of common frequency resources CFR broadcast by the multicast / broadcast service MBS.

[0284] Step 4302: When the bandwidth of the CFR and the initial partial bandwidth BWP satisfy a preset relationship, the MBS broadcast is received on the CRF.

[0285] The optional implementation of step 4302 can refer to the optional implementation of step 2103 in Figure 2, step 4103 in Figure 4a, step 4202 in Figure 4b, and other related parts in the embodiments involved in Figures 2, 4a, and 4b, which will not be repeated here.

[0286] In some embodiments, terminal 101 may receive MBS broadcasts on CFR.

[0287] In some embodiments, the terminal 101 may receive the MBS broadcast on the CFR based on the first message when the bandwidth of the CFR is greater than and includes the initial partial bandwidth BWP, but is not limited thereto. The terminal 101 may also receive the MBS broadcast on the CFR in other situations based on other messages.

[0288] In some embodiments, the terminal 101 may receive the MBS broadcast on the CRF when the bandwidth of the CFR satisfies a preset relationship with the initial partial bandwidth BWP.

[0289] Optionally, in some embodiments, the method further includes: when the value of the first parameter in the configuration information of the CFR satisfies a first condition, the terminal 101 determines that a preset relationship is satisfied, and the preset relationship indicates that the bandwidth of the CFR is greater than and includes the initial BWP; when the value of the first parameter in the configuration information of the CFR does not satisfy the first condition, using CORESET 0 as the frequency resource for the MBS broadcast, wherein the first condition is that the value of the first parameter in the configuration information of the CFR is a preset value.

[0290] Optionally, in some embodiments, the preset condition includes at least one of the following:

[0291] Starting position of CFR Starting position with initial BWP satisfy CFR Bandwidth Bandwidth with initial BWP satisfy

[0292] Starting position of CFR Starting position with initial BWP satisfy CFR Bandwidth Bandwidth with initial BWP satisfy

[0293] Starting position of CFR Starting position with initial BWP satisfy CFR Bandwidth Bandwidth with initial BWP satisfy

[0294] Optionally, in some embodiments, the method further includes: when the physical downlink control channel PDCCH and / or the physical downlink shared channel PDSCH occupied by the terminal 101 when receiving the MBS broadcast meets a second condition, stopping receiving the MBS broadcast.

[0295] Optionally, in some embodiments, the second condition includes that the PDCCH and / or PDSCH partially exceeds or completely exceeds the initial BWP.

[0296] Optionally, in some embodiments, the terminal 101 stopping receiving the MBS broadcast includes: the terminal 101 stopping receiving the MBS broadcast when the second condition is met, and / or continuing to receive the MBS broadcast when the second condition is not met.

[0297] Optionally, in some embodiments, the terminal 101 receiving the MBS broadcast on the CFR includes: the terminal 101 receiving the MBS control channel MCCH and / or the MBS traffic channel MTCH corresponding to the MBS broadcast on the CFR.

[0298] Optionally, in some embodiments, the terminal 101 receives the MBS control channel MCCH corresponding to the MBS broadcast on the CFR, including: the terminal 101 obtains the configuration information of the MCCH based on the first message; the terminal 101 receives the PDCCH scrambled by the wireless network temporary identifier MCCH-RNTI of the MBS control channel based on the configuration information of the MCCH, and the PDCCH scrambled by the MCCH-RNTI is used to carry the MCCH; the terminal 101 obtains the broadcast program list based on the MCCH, and reads the broadcast-related configuration information.

[0299] Optionally, in some embodiments, the method further includes: the terminal 101 obtains MBS broadcast session configuration information based on MCCH; the terminal 101 configures the physical layer, the media access control MAC layer, and establishes one or more communication entities based on the MBS broadcast session configuration information.

[0300] Optionally, in some embodiments, the terminal 101 receives the MBS service channel MTCH corresponding to the MBS broadcast on the CFR, including: the terminal 101 receives the PDCCH scrambled by the cluster group radio network temporary identifier G-RNTI, the PDCCH scrambled by the G-RNTI is used to schedule the PDSCH, and the PDSCH carries the MBS service channel MTCH.

[0301] Optionally, in some embodiments, the method further includes: the terminal 101 reporting terminal capabilities to the network device 102, where the terminal capabilities indicate that the terminal supports additional bandwidth reception.

[0302] Optionally, in some embodiments, the value of the first parameter in the configuration information of the CFR of the MBS broadcast carried in the first message is a preset value.

[0303] Optionally, in some embodiments, when the terminal 101 does not support extra bandwidth reception, the value of the first parameter in the configuration information of the CFR of the MBS broadcast carried in the first message is not a preset value.

[0304] For a detailed description of steps 4301 - 4202 , please refer to the embodiment shown in FIG. 2 .

[0305] The communication method involved in the embodiment of the present disclosure may include at least one of step 4301 and step 4302. For example, step 4301 may be implemented as an independent embodiment, step 4302 may be implemented as an independent embodiment, and steps 4301+4302 may be implemented as independent embodiments.

[0306] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, and the optional methods or optional examples can be arbitrarily combined and can be arbitrarily combined with other embodiments or examples.

[0307] FIG5a is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG5a, the embodiment of the present disclosure relates to a communication method for a network device 102, the method comprising:

[0308] Step 5101: Send the first message.

[0309] The optional implementation of step 5101 can refer to the optional implementation of step 2101 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0310] In some embodiments, the network device 102 may send the first message to the terminal 101 , but is not limited thereto and may also send the first message to other entities.

[0311] In some embodiments, the first message carries configuration information of common frequency resources CFR broadcast by the multicast / broadcast service MBS.

[0312] In some embodiments, step 5101 is omitted and the above functions are default or by default.

[0313] Step 5102: Send MBS broadcast on CFR.

[0314] The optional implementation of step 5102 can refer to the optional implementation of step 2103 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0315] In some embodiments, the network device 102 may send the MBS broadcast on a CFR.

[0316] Optionally, in some embodiments, the network device 102 sending the MBS broadcast on the CFR may mean that the network device 102 sends the MBS control channel MCCH and / or the MBS traffic channel MTCH corresponding to the MBS broadcast on the CFR.

[0317] Optionally, in some embodiments, the network device 102 sending the MBS service channel MTCH corresponding to the MBS broadcast on the CFR may mean that the network device 102 sends the PDCCH scrambled by the radio network temporary identifier MCCH-RNTI of the MBS control channel, and the PDCCH scrambled by the MCCH-RNTI carries the MCCH.

[0318] Optionally, in some embodiments, the network device 102 sending the MBS service channel MTCH corresponding to the MBS broadcast on the CFR may mean that the network device 102 sends the PDCCH scrambled by the cluster group radio network temporary identifier G-RNTI, and the PDCCH scrambled by the G-RNTI is used to schedule the PDSCH, and the PDSCH carries the MBS service channel MTCH.

[0319] In some embodiments, step 5102 is omitted and the above functions are default or by default.

[0320] Step 5103: Receive reported terminal capabilities.

[0321] The optional implementation of step 5103 can refer to the optional implementation of step 2106 in Figure 2 and other related parts in the embodiment involved in Figure 2, which will not be repeated here.

[0322] In some embodiments, the network device 102 may receive the terminal capabilities reported by the terminal 101, but is not limited thereto and may also receive the terminal capabilities reported by other entities.

[0323] In some embodiments, the terminal capabilities indicate that the terminal supports extra bandwidth reception.

[0324] In some embodiments, step 5103 is omitted and the above functions are default or by default.

[0325] The communication method involved in the embodiments of the present disclosure may include at least one of steps 5101 to 5103. For example, step 5101 may be implemented as an independent embodiment, and step 5103 may be implemented as an independent embodiment. For example, steps 5101+5102 may be implemented as an independent embodiment, and steps 5102+5103 may be implemented as independent embodiments, but the present invention is not limited thereto.

[0326] In some embodiments, steps 5101 , 5102 , and 5103 may be performed in an interchangeable order or simultaneously.

[0327] In some embodiments, step 5102 and step 5103 are optional, and one or more of these steps may be omitted or replaced in different embodiments.

[0328] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, and the optional methods or optional examples can be arbitrarily combined and can be arbitrarily combined with other embodiments or examples.

[0329] FIG5b is a flow chart of a communication method according to an embodiment of the present disclosure. As shown in FIG5b, the present disclosure embodiment relates to a communication method for a network device 102, the method comprising:

[0330] Step 5201: Send the first message.

[0331] The optional implementation of step 5201 can refer to step 2101 in Figure 2, the optional implementation of step 5101 in Figure 5a, and other related parts in the embodiments involved in Figures 2 and 5a, which will not be repeated here.

[0332] In some embodiments, the network device 102 may send the first message to the terminal 101 , but is not limited thereto and may also send the first message to other entities.

[0333] In some embodiments, the first message carries configuration information of common frequency resources CFR broadcast by the multicast / broadcast service MBS.

[0334] Optionally, in some embodiments, the value of the first parameter in the configuration information of the CFR of the MBS broadcast carried in the first message is a preset value.

[0335] Optionally, in some embodiments, when the terminal does not support extra bandwidth reception, the value of the first parameter in the configuration information of the CFR of the MBS broadcast carried in the first message is not a preset value.

[0336] Optionally, in some embodiments, when the first parameter value of the CFR configuration information is a preset value, the CFR and the initial BWP satisfy a preset relationship.

[0337] Optionally, in some embodiments, the preset relationship includes at least one of the following:

[0338] Starting position of CFR Starting position with initial BWP satisfy CFR Bandwidth Bandwidth with initial BWP satisfy

[0339] Starting position of CFR Starting position with initial BWP satisfy CFR Bandwidth Bandwidth with initial BWP satisfy

[0340] Starting position of CFR Starting position with initial BWP satisfy CFR Bandwidth Bandwidth with initial BWP satisfy

[0341] Step 5202: Send MBS broadcast on CFR.

[0342] The optional implementation of step 5202 can refer to step 2103 in Figure 2, the optional implementation of step 5102 in Figure 5a, and other related parts in the embodiments involved in Figures 2 and 5a, which will not be repeated here.

[0343] In some embodiments, the network device 102 may send the MBS broadcast on a CFR.

[0344] Optionally, in some embodiments, the method further includes: the network device 102 receiving terminal capabilities reported by the terminal 101 , where the terminal capabilities indicate that the terminal supports additional bandwidth reception.

[0345] Optionally, in some embodiments, the network device 102 sending the MBS broadcast on the CFR includes: the network device 102 sending the MBS control channel MCCH and / or the MBS traffic channel MTCH corresponding to the MBS broadcast on the CFR.

[0346] Optionally, in some embodiments, the network device 102 sends the MBS control channel MCCH corresponding to the MBS broadcast on the CFR, including: the network device 102 sends the PDCCH scrambled by the radio network temporary identifier MCCH-RNTI of the MBS control channel, and the PDCCH scrambled by the MCCH-RNTI carries the MCCH.

[0347] Optionally, in some embodiments, the network device 102 sends the MBS service channel MTCH corresponding to the MBS broadcast on the CFR, including: the network device 102 sends the PDCCH scrambled by the cluster group radio network temporary identifier G-RNTI, the PDCCH scrambled by the G-RNTI is used to schedule the PDSCH, and the PDSCH carries the MBS service channel MTCH.

[0348] For a detailed description of steps 5201-5202, please refer to the embodiment of FIG2 above.

[0349] The communication method involved in the embodiment of the present disclosure may include at least one of step 5201 and step 5202. For example, step 5201 may be implemented as an independent embodiment, and step 5202 may be implemented as an independent embodiment, but the present invention is not limited thereto.

[0350] In this embodiment or example, unless there is any contradiction, each step can be independent, arbitrarily combined or exchanged in order, and the optional methods or optional examples can be arbitrarily combined and can be arbitrarily combined with other embodiments or examples.

[0351] Figure 6 is an interactive diagram of a communication method according to an embodiment of the present disclosure. As shown in Figure 6, the embodiment of the present disclosure relates to a communication method for a communication system, the method comprising:

[0352] Step 6101: The network device 102 sends a first message to the terminal 101.

[0353] For optional implementations of step 6101, please refer to step 2101 of Figure 2, step 4101 of Figure 4a, step 4201 of Figure 4b, step 4301 of Figure 4c, step 5101 of Figure 5a, step 5201 of Figure 5b, and other related parts of the embodiments involved in the steps of Figures 2, 4a, 4b, 4c, 5a, and 5b.

[0354] Step 6102: The network device 102 sends an MBS broadcast to the terminal 101 on the CFR.

[0355] For optional implementations of step 6101, refer to step 2103 of Figure 2, step 4103 of Figure 4a, step 4202 of Figure 4b, step 4302 of Figure 4c, step 5102 of Figure 5a, step 5202 of Figure 5b, and other related parts of the embodiments involved in the steps of Figures 2, 4a, 4b, 4c, 5a, and 5b.

[0356] In some embodiments, the above method may include the method described in the above embodiments of the communication system side, terminal side, network device side, etc., which will not be repeated here.

[0357] The following is an exemplary introduction to the above method.

[0358] FIG7 a is a schematic diagram showing interaction of an MBS broadcast session of a terminal according to an embodiment of the present disclosure.

[0359] Step 7101: The terminal determines whether it is in a connected state / inactive state / idle state.

[0360] In some embodiments, the terminal can receive the configuration of the broadcast session and the broadcast session data through the MCCH in any of the three states: connected state / inactive state / idle state (RRC CONNECTED / INACTIVE / IDLE).

[0361] Step 7102: The network device sends a system message SIB20 to the terminal.

[0362] In some embodiments, the network device sends a system message SIB20 to the terminal, where the system message SIB20 includes MCCH-related configuration information.

[0363] Step 7103: The terminal obtains MCCH related configuration information.

[0364] In some embodiments, the terminal receives system information SIB20 sent by the network device, thereby obtaining MCCH-related configuration information.

[0365] In some embodiments, the terminal obtains MCCH-related configuration information to determine the receiving frequency domain range of the MCCH.

[0366] Step 7104: The network device sends the MCCH-RNTI-scrambled PDCCH scheduling to the terminal.

[0367] In some embodiments, the network device sends a PDCCH scheduling scrambled by the MCCH-RNTI to the terminal, so as to send scheduling information of the MCCH channel to the terminal.

[0368] In other words, the terminal may receive the MCCH by receiving the PDCCH scrambled by the MCCH-RNTI, wherein the PDCCH scrambled by the MCCH-RNTI carries the MCCH.

[0369] In some embodiments, the MCCH carries an MBSBroadcastConfiguration message indicating the MBS broadcast sessions provided in the cell and corresponding scheduling related information of these sessions.

[0370] Step 7105: Receive MCCH to obtain a broadcast program list.

[0371] In some embodiments, the terminal may obtain a broadcast program list based on receiving the MCCH sent by the network device.

[0372] Step 7106: Read MBSBroadcastConfiguration.

[0373] In some embodiments, the terminal may read an MBSBroadcastConfiguration message through the MCCH, where the message indicates the MBS broadcast sessions provided in the cell and corresponding scheduling related information of these sessions, wherein the MCCH carries the MBSBroadcastConfiguration message.

[0374] In some embodiments, the MBSBroadcastConfiguration message may further include a list of neighboring cells that provide the same broadcast MBS service as the current cell.

[0375] Step 7107: Establish PDCP and RLC entities and configure MAC layer information.

[0376] In some embodiments, the terminal may further obtain the MBS broadcast session configuration by receiving the MCCH, and configure the physical layer and MAC and establish corresponding RLC and PDCP entities respectively through the parameters in the session configuration.

[0377] Step 7108: The network device sends a G-RNTI-scrambled PDCCH schedule to the terminal.

[0378] In some embodiments, the network device sends a G-RNTI-scrambled PDCCH schedule to the terminal, wherein the G-RNTI-scrambled PDCCH is used to schedule a PDSCH, and the PDSCH carries an MBS traffic channel MTCH.

[0379] Step 7109: Receive the DL-SCH broadcast by the MBS.

[0380] In some embodiments, the terminal may receive a downlink shared channel (DL-SCH) broadcast by the MBS. In other words, the terminal may receive the MTCH sent by the MBS broadcast.

[0381] In some embodiments, the process involved in MBS broadcast data service activation mainly includes: creation and establishment of a broadcast session, broadcast service declaration, transmission of broadcast data, and release and deletion of the broadcast session. The timeline corresponding to the broadcast data service process is shown in Figure 7b.

[0382] In some embodiments, the terminal can configure MBS frequency resources for PDCCH and PDSCH reception for MCCH and broadcast MTCH via cfr-ConfigMCCH-MTCH in system message SIB20. Otherwise, the MBS frequency resources are the same as CORESET 0, which is associated with the Type0-PDCCH CSS set that provides PDCCH and PDSCH reception for MCCH and broadcast MTCH. In addition, during the MBS transmission scheduling process, the terminal does not expect to receive PDCCH or corresponding PDSCH scrambled by G-RNTI or MCCH-RNTI outside the CFR.

[0383] In some embodiments, when locationAndBandwidthBroadcast takes the value of locationAndBandwidth, the CFR bandwidth of the MBS broadcast is greater than and completely includes the initial downlink BWP and the control resource set CORESET#0.

[0384] Specifically, as shown in FIG3(a), it indicates that the MBS broadcast CFR and the starting position of the initial downlink BWP meet Bandwidth size meets The bandwidth of the MBS broadcast CFR is larger than the initial downlink BWP.

[0385] As shown in Figure 3(b), it means that the MBS broadcast CFR and the starting position of the initial downlink BWP meet Bandwidth size meets The bandwidth of the MBS broadcast CFR is larger than the initial downlink BWP.

[0386] As shown in Figure 3(c), it means that the MBS broadcast CFR and the starting position of the initial downlink BWP meet Bandwidth size meets The bandwidth of the MBS broadcast CFR is equal to the initial downlink BWP.

[0387] In the above embodiment, for MBS broadcasts, if the CFR configuration received by the terminal exceeds the terminal's receiving capability, for example, if the CFR bandwidth exceeds the terminal's supported bandwidth, the terminal may receive some broadcasts but not others, resulting in significant packet loss for the MBS broadcast service, making reception less meaningful. A network configuration with a larger CFR bandwidth can support high-traffic services, but the network cannot guarantee that the terminal's bandwidth capabilities are met. The terminal will only receive MBS broadcasts if its RF capabilities are met. To address this issue, this patent proposes two strategies:

[0388] Strategy 1: The terminal directly stops receiving MBS broadcasts.

[0389] Strategy 2: The terminal continues to receive MBS broadcasts. When the reception configuration (e.g., bandwidth) of MBS broadcast-related channels, such as PDCCH and / or PDSCH, exceeds the terminal's capabilities, the terminal stops receiving the MBS broadcast-related channels for the duration exceeding the terminal's reception capabilities. That is, the terminal continues to receive MBS broadcast-related channels for the duration that does not exceed the terminal's reception capabilities. The overall process is shown in Figure 7c.

[0390] Step 7301: Send system message SIB20.

[0391] In some embodiments, the network device sends a system message SIB20 to the terminal, but is not limited thereto. The SIB message 20 may also be sent to the terminal by other entities.

[0392] In some embodiments, a system message SIB20 may be sent by a higher layer to the terminal.

[0393] In some embodiments, the terminal may obtain the configuration information of the MCCH based on the system message SIB20′.

[0394] Optionally, in some embodiments, SIB20 carries configuration information of the CFR broadcast by the MBS. SIB20 may also carry other configuration information related to the MBS broadcast service, which is not limited in this disclosure.

[0395] Step 7302: The terminal determines whether locationAndBandwidthBroadcast=locationAndBandwidth in Cfr-ConfigMCCH-MTCH holds.

[0396] In some embodiments, the SIB20 carrying the configuration information of the CFR of the MBS broadcast is cfr-ConfigMCCH-MTCH.

[0397] In some embodiments, locationAndBandwidthBroadcast may have multiple values. For example, locationAndBandwidthBroadcast may take a preset value, where the preset value may be locationAndBandwidth.

[0398] In some embodiments, the terminal may determine whether locationAndBandwidthBroadcast = locationAndBandwidth. If so, it indicates that the CFR bandwidth of the MBS broadcast is greater than and completely includes the initial partial bandwidth, and the terminal executes step 7303. If not, it indicates that the CFR bandwidth of the MBS broadcast is less than or equal to or does not completely include the initial partial bandwidth, and the terminal executes step 7307.

[0399] Step 7303: The terminal executes strategy 2: keeps receiving MBS broadcast.

[0400] In some embodiments, the terminal determines that the CFR bandwidth of the MBS broadcast is greater than and completely includes the initial partial bandwidth, and the terminal executes strategy 2: keep receiving the MBS broadcast.

[0401] Optionally, in some embodiments, the terminal may further determine whether the PDCCH and / or PDSCH occupied during MBS broadcast reception does not exceed the initial partial bandwidth. If so, step 7304 is executed. If not, step 7306 is executed. The initial partial bandwidth may be completely or partially exceeded, which is not limited in this disclosure.

[0402] Optionally, in some embodiments, the terminal may determine multiple times whether the occupied PDCCH and / or PDSCH does not exceed the initial portion of bandwidth when receiving the MBS broadcast.

[0403] Step 7304: The terminal determines whether the MIBS broadcast-related channels exceed the terminal's capabilities.

[0404] In some embodiments, if the terminal determines that the PDCCH and / or PDSCH occupied during MBS broadcast reception does not exceed the initial portion of bandwidth, the terminal may determine whether the MIBS broadcast-related channels (e.g., PDCCH and / or PDSCH) exceed the terminal's capabilities (e.g., bandwidth). If so, step 7305 is executed. If not, step 7307 is executed.

[0405] Step 7305: Stop receiving MBS broadcast related channels when the time exceeds the terminal's receiving capability.

[0406] In some embodiments, a terminal can continue to receive MBS broadcasts. When the reception configuration (e.g., bandwidth) of MBS broadcast-related channels (e.g., PDCCH and / or PDSCH) exceeds the terminal's capabilities, the terminal stops receiving the MBS broadcast-related channels for the time period exceeding the terminal's reception capabilities (i.e., the terminal continues to receive the MBS broadcast-related channels for the time period within which the terminal's reception capabilities are not exceeded). This prevents the terminal from experiencing large-scale packet loss of MBS broadcast services and protects the CFR protocol standard for MBS broadcasts.

[0407] Step 7306: The terminal executes strategy 1: directly terminates the MBS broadcast.

[0408] In some embodiments, if a terminal determines that the PDCCH and / or PDSCH occupied by receiving an MBS broadcast exceeds the initial bandwidth, the terminal implements Strategy 1: directly terminate the MBS broadcast. This prevents the terminal from experiencing significant packet loss in the MBS broadcast service and protects the CFR protocol standard for MBS broadcasts.

[0409] Step 7307: The terminal receives PDCCH scheduling of MCCH-RNTI according to MCCH configuration.

[0410] In some embodiments, the terminal determines that locationAndBandwidthBroadcast=locationAndBandwidth in Cfr-ConfigMCCH-MTCH does not hold, or the terminal determines that MBS broadcast-related channels exceed the terminal capability, and the terminal receives PDCCH scheduling of MCCH-RNTI according to MCCH configuration.

[0411] In some embodiments, the PDCCH scrambled by the MCCH-RNTI carries the MCCH.

[0412] In some embodiments, the terminal may obtain MCCH configuration information based on SIB20.

[0413] Step 7308: Obtain a list of broadcast programs and read broadcast-related configuration information.

[0414] In some embodiments, the terminal may obtain a broadcast program list and read broadcast-related configuration information based on the MCCH sent by the receiving network device.

[0415] In some embodiments, the terminal may read an MBSBroadcastConfiguration message through the MCCH, where the message indicates the MBS broadcast sessions provided in the cell and corresponding scheduling related information of these sessions, wherein the MCCH carries the MBSBroadcastConfiguration message.

[0416] In some embodiments, the MBSBroadcastConfiguration message may further include a list of neighboring cells that provide the same broadcast MBS service as the current cell.

[0417] Step 7309: Receive the PDCCH scrambled by the G-RNTI and the PDSCH corresponding to the MBS broadcast.

[0418] In some embodiments, the terminal receives a PDCCH scrambled by the G-RNTI, wherein the PDCCH scrambled by the G-RNTI is used to schedule a PDSCH, and the PDSCH carries an MBS traffic channel MTCH.

[0419] Step 7310: The broadcast session is released and / or deleted.

[0420] In some embodiments, after executing any one of the above steps 7305, 7306, and 7309, the terminal may release and / or delete the broadcast session to end the broadcast session.

[0421] Figure 8a is a schematic diagram of the structure of terminal 101 according to an embodiment of the present disclosure. As shown in Figure 8a, terminal 101 includes a transceiver module 8101 configured to receive a first message carrying configuration information for a common frequency resource (CFR) broadcasted by a multicast / broadcast service (MBS); and receive the MBS broadcast on the CRF when the CFR bandwidth and the initial partial bandwidth (BWP) meet a preset relationship.

[0422] Optionally, the above-mentioned transceiver module 8101 is used to execute at least one of the communication steps such as sending and / or receiving performed by the terminal 101 in any of the above methods (for example, step 2101, step 2103, step 2106, etc., but not limited to these), which will not be repeated here.

[0423] Figure 8b is a schematic diagram of the structure of the network device 102 proposed in an embodiment of the present disclosure. As shown in Figure 8b, the network device 102 includes: a transceiver module 8201, configured to send a first message, wherein the first message carries configuration information of a common frequency resource (CFR) broadcasted by a multicast / broadcast service (MBS); and to send the MBS broadcast on the CFR. Optionally, the transceiver module 8201 is configured to execute at least one of the communication steps such as sending and / or receiving executed by the network device 102 in any of the above methods (e.g., step 2101, step 2103, step 2106, etc., but not limited thereto), which are not described in detail here. In some embodiments, the network device 102 further includes a processing module 8202, configured to execute at least one of the other steps (e.g., step 2102, step 2104, step 2105, etc., but not limited thereto) executed by the network device 102 in any of the above methods, which are not described in detail here.

[0424] Figure 9a is a schematic diagram of the structure of a communication device 9100 proposed in an embodiment of the present disclosure. Communication device 9100 can be a network device (e.g., an access network device, a core network device, etc.), a terminal (e.g., a user equipment, etc.), a chip, a chip system, or a processor that supports a network device to implement any of the above methods, or a chip, a chip system, or a processor that supports a terminal to implement any of the above methods. Communication device 9100 can be used to implement the methods described in the above method embodiments. For details, please refer to the description of the above method embodiments.

[0425] As shown in Figure 9a, the communication device 9100 includes one or more processors 9101. The processor 9101 can be a general-purpose processor or a dedicated processor, for example, a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data, and the central processing unit can be used to control the communication device (such as a base station, baseband chip, terminal device, terminal device chip, DU or CU, etc.), execute programs, and process program data. The processor 9101 is used to call instructions to enable the communication device 9100 to perform any of the above methods.

[0426] In some embodiments, the communication device 9100 further includes one or more memories 9102 for storing instructions. Optionally, all or part of the memories 9102 may be located outside the communication device 9100.

[0427] In some embodiments, the communication device 9100 further includes one or more transceivers 9103. When the communication device 9100 includes one or more transceivers 9103, the communication steps such as sending and receiving in the above method are performed by the transceiver 9103, and the other steps are performed by the processor 9101.

[0428] In some embodiments, a transceiver may include a receiver and a transmitter, which may be separate or integrated. Optionally, the terms transceiver, transceiver unit, transceiver, and transceiver circuit may be used interchangeably; the terms transmitter, transmitting unit, transmitter, and transmitting circuit may be used interchangeably; and the terms receiver, receiving unit, receiver, and receiving circuit may be used interchangeably.

[0429] Optionally, the communication device 9100 further includes one or more interface circuits 9104, which are connected to the memory 9102. The interface circuits 9104 can be used to receive signals from the memory 9102 or other devices, and can be used to send signals to the memory 9102 or other devices. For example, the interface circuits 9104 can read instructions stored in the memory 9102 and send the instructions to the processor 9101.

[0430] The communication device 9100 described in the above embodiment may be a network device or a terminal, but the scope of the communication device 9100 described in the present disclosure is not limited thereto, and the structure of the communication device 9100 may not be limited by FIG. 9a. The communication device may be an independent device or may be part of a larger device. For example, the communication device may be: 1) an independent integrated circuit IC, or a chip, or a chip system or subsystem; (2) a collection of one or more ICs, optionally, the above IC collection may also include a storage component for storing data or programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, a terminal device, an intelligent terminal device, a cellular phone, a wireless device, a handheld device, a mobile unit, an in-vehicle device, a network device, a cloud device, an artificial intelligence device, etc.; (6) others, etc.

[0431] FIG9b is a schematic diagram of the structure of a chip 9200 according to an embodiment of the present disclosure. If the communication device 9100 can be a chip or a chip system, reference can be made to the schematic diagram of the structure of the chip 9200 shown in FIG9b , but the present disclosure is not limited thereto.

[0432] The chip 9200 includes one or more processors 9201, and the processor 9201 is used to call instructions so that the chip 9200 executes any of the above methods.

[0433] In some embodiments, chip 9200 further includes one or more interface circuits 9202, which are connected to memory 9203. Interface circuits 9202 can be used to receive signals from memory 9203 or other devices, and can be used to send signals to memory 9203 or other devices. For example, interface circuit 9202 can read instructions stored in memory 9203 and send the instructions to processor 9201. Optionally, the terms interface circuit, interface, transceiver pin, and transceiver are interchangeable.

[0434] In some embodiments, the chip 9200 further includes one or more memories 9203 for storing instructions. Alternatively, all or part of the memories 9203 may be located outside the chip 9200.

[0435] The present disclosure also proposes a storage medium having instructions stored thereon, which, when executed on the communication device 9100, causes the communication device 9100 to execute any of the above methods. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but is not limited thereto and may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but is not limited thereto and may also be a temporary storage medium.

[0436] The present disclosure also provides a program product, which, when executed by the communication device 9100, enables the communication device 9100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0437] The present disclosure also proposes a computer program, which, when executed on a computer, causes the computer to perform any one of the above methods.

[0438] In the above embodiments, all or part of the embodiments can be implemented by software, hardware, firmware or any combination thereof. When implemented using software, all or part of the embodiments can be implemented in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present disclosure are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0439] The correspondences shown in the tables of the present disclosure can be configured or predefined. The values ​​of the information in each table are merely examples and can be configured to other values, which are not limited by the present disclosure. When configuring the correspondences between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables of the present disclosure, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also adopt other names that can be understood by the communication device, and the values ​​or representations of the parameters may also adopt other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures may also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0440] The predefined in the present disclosure may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0441] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this disclosure.

[0442] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0443] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this disclosure should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A communication method, characterized in that: The method is executed by a terminal, and includes: receiving a first message, wherein the first message carries configuration information of a common frequency resource CFR broadcast by a multicast / broadcast service MBS; When the bandwidth of the CFR satisfies a preset relationship with the initial partial bandwidth BWP, the MBS broadcast is received on the CRF.

2. The method according to claim 1, characterized in that The method further comprises: When the value of the first parameter in the configuration information of the CFR satisfies the first condition, it is determined that the preset relationship is satisfied, and the preset relationship indicates that the bandwidth of the CFR is greater than and includes the initial BWP; When the value of the first parameter in the configuration information of the CFR does not satisfy the first condition, CORESET 0 is used as the frequency resource of the MBS broadcast, The first condition is that the first parameter value of the CFR configuration information is a preset value.

3. The method according to claim 1 or 2, characterized in that: The preset relationship includes at least one of the following: The starting position of the CFR The starting position with the initial BWP satisfy The bandwidth of the CFR The bandwidth of the initial BWP satisfy The starting position of the CFR The starting position with the initial BWP satisfy The bandwidth of the CFR The bandwidth of the initial BWP satisfy The starting position of the CFR The starting position with the initial BWP satisfy The bandwidth of the CFR The bandwidth of the initial BWP satisfy 4. The method according to any one of claims 1 to 3, characterized in that The method further comprises: When the physical downlink control channel PDCCH and / or the physical downlink shared channel PDSCH occupied by the terminal when receiving the MBS broadcast meets the second condition, the terminal stops receiving the MBS broadcast.

5. The method according to claim 4, characterized in that The second condition includes that the PDCCH and / or the PDSCH partially exceeds or completely exceeds the initial BWP.

6. The method according to claim 4 or 5, characterized in that: The stopping receiving the MBS broadcast includes: Stop receiving the MBS broadcast when the second condition is met; and / or, The MBS broadcast is kept received during a time when the second condition is not satisfied.

7. The method according to any one of claims 1 to 6, characterized in that The receiving the MBS broadcast on the CFR includes: An MBS control channel MCCH and / or an MBS traffic channel MTCH corresponding to the MBS broadcast is received on the CFR.

8. The method according to claim 7, characterized in that Receiving an MBS control channel MCCH corresponding to the MBS broadcast on the CFR includes: Based on the first message, acquiring configuration information of the MCCH; Based on the configuration information of the MCCH, receiving a PDCCH scrambled by a radio network temporary identifier MCCH-RNTI of an MBS control channel, wherein the PDCCH scrambled by the MCCH-RNTI is used to carry the MCCH; Based on the MCCH, a broadcast program list is obtained, and broadcast-related configuration information is read.

9. The method according to claim 8, wherein the characteristic resource, The method further comprises: Based on the MCCH, acquiring MBS broadcast session configuration information; Based on the MBS broadcast session configuration information, a physical layer and a media access control MAC layer are configured, and one or more communication entities are established.

10. The method according to any one of claims 7 to 9, characterized in that Receiving an MBS service channel MTCH corresponding to the MBS broadcast on the CFR includes: A PDCCH scrambled by a cluster group radio network temporary identifier G-RNTI is received, where the PDCCH scrambled by the G-RNTI is used to schedule a PDSCH, where the PDSCH carries an MBS traffic channel MTCH.

11. The method according to any one of claims 1 to 10, characterized in that The method further comprises: Reporting terminal capabilities to a network device, where the terminal capabilities indicate that the terminal supports additional bandwidth reception.

12. The method according to claim 11, characterized in that The first parameter value in the configuration information of the CFR of the MBS broadcast carried in the first message is a preset value.

13. The method according to any one of claims 1 to 10, characterized in that In the case that the terminal does not support extra bandwidth reception, the value of the first parameter in the configuration information of the CFR of the MBS broadcast carried in the first message is not a preset value.

14. A communication method, characterized in that: The method is performed by a network device, and the method includes: Sending a first message, wherein the first message carries configuration information of a common frequency resource CFR broadcast by a multicast / broadcast service MBS; The MBS broadcast is sent on the CFR.

15. The method according to claim 14, characterized in that The method further comprises: A terminal capability reported by a terminal is received, where the terminal capability indicates that the terminal supports additional bandwidth reception.

16. The method according to claim 15, characterized in that The first parameter value in the configuration information of the CFR of the MBS broadcast carried in the first message is a preset value.

17. The method according to claim 14, characterized in that In the case that the terminal does not support additional bandwidth reception, the value of the first parameter in the configuration information of the CFR of the MBS broadcast carried in the first message is not a preset value.

18. The method according to any one of claims 14 to 17, characterized in that When the first parameter value of the configuration information of the CFR is a preset value, the CFR and the initial BWP satisfy a preset relationship.

19. The method according to claim 18, characterized in that The preset relationship includes at least one of the following: The starting position of the CFR The starting position with the initial BWP satisfy The bandwidth of the CFR The bandwidth of the initial BWP satisfy The starting position of the CFR The starting position with the initial BWP satisfy The bandwidth of the CFR The bandwidth of the initial BWP satisfy The starting position of the CFR The starting position with the initial BWP satisfy The bandwidth of the CFR The bandwidth of the initial BWP satisfy 20. The method according to any one of claims 14 to 19, characterized in that The sending the MBS broadcast on the CFR includes: The MBS control channel MCCH and / or the MBS traffic channel MTCH corresponding to the MBS broadcast are sent on the CFR.

21. The method according to claim 20, characterized in that Sending an MBS control channel MCCH corresponding to the MBS broadcast on the CFR includes: A PDCCH scrambled by a radio network temporary identifier MCCH-RNTI of an MBS control channel is sent, and the PDCCH scrambled by the MCCH-RNTI carries the MCCH.

22. The method according to claim 20 or 21, characterized in that Sending an MBS service channel MTCH corresponding to the MBS broadcast on the CFR includes: A PDCCH scrambled by a cluster group radio network temporary identifier G-RNTI is sent, where the PDCCH scrambled by the G-RNTI is used to schedule a PDSCH, where the PDSCH carries an MBS traffic channel MTCH.

23. A terminal, characterized in that: Includes transceiver modules for: receiving a first message, wherein the first message carries configuration information of a common frequency resource CFR broadcast by a multicast / broadcast service MBS; When the bandwidth of the CFR satisfies a preset relationship with the initial partial bandwidth BWP, the MBS broadcast is received on the CRF.

24. A network device, characterized in that: Includes transceiver modules for: Sending a first message, wherein the first message carries configuration information of a common frequency resource CFR broadcast by a multicast / broadcast service MBS; The MBS broadcast is sent on the CFR.

25. A communication device, wherein: include: Transceiver; Memory; A processor is connected to the transceiver and the memory, respectively, and is configured to control the wireless signal reception and transmission of the transceiver by executing computer executable instructions on the memory, and can implement any one of the methods of claims 1-22.

26. A computer storage medium, wherein: The computer storage medium stores computer executable instructions; after the computer executable instructions are executed by the processor, the method described in any one of claims 1 to 22 can be implemented.

27. A communication system, characterized in that: include: A terminal, configured to execute the method according to any one of claims 1 to 13; A network device, configured to execute the method according to any one of claims 14 to 22.

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