Method and apparatus for reporting in-device coexistence interference

Abstract

The present disclosure describes methods, systems, and devices for reporting in-device coexistence (IDC) interference. A method comprises: receiving, by a first communication node, a first message from a second communication node, the first message comprising a second list of candidate frequencies for the second communication node; transmitting, by the first communication node, a second message to a user equipment (UE); receiving, by the first communication node, a third message from the UE, the third message including an in-device coexistence (IDC) report corresponding to a first list of candidate frequencies for the first communication node or a second list of candidate frequencies for the second communication node; and sending, by the first communication node to the second communication node, a fourth message comprising at least a portion of the IDC report corresponding to the second list of candidate frequencies for the second communication node.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communications and, more particularly, to methods and devices for reporting in-device coexistence (IDC) interference. Background Art

[0002] Wireless communication technology is driving the world towards an increasingly connected and networked society. An emerging trend in mobile communications is the parallel use of multiple wireless technologies in user equipment (UE), which includes but is not limited to mobile devices, tablets and other communication modules. In order to support this parallel operation, the device is equipped with more than one wireless transceiver, which is located very close to each other. When one or more wireless transceivers are operating, one or more nearby transceivers may interfere with each other, resulting in in-device coexistence (IDC) interference. Under the multiple radio access technologies (Multi-RAT, multi-RAT) dual connectivity (multiple radioaccess technologies duel connectivity, MR-DC) structure, there may be some issues (issues / problems) associated with IDC reporting, such as poor coordination performance between the master node (MN) and the secondary node (SN).

[0003] The present disclosure describes various embodiments for reporting IDC interference, solves at least one of the problems discussed above, provides improvements to the field of wireless communication technology, and improves the efficiency and performance of wireless communications. Summary of the invention

[0004] The present document relates to methods, systems and devices for wireless communication, and more specifically, to methods, systems and devices for reporting IDC interference. Various embodiments of the present disclosure may be beneficial for improving IDC reporting, reducing IDC interference, improving resource utilization efficiency, and improving the performance of wireless communication.

[0005] In one embodiment, the present disclosure describes a method for wireless communication. The method includes: receiving, by a first communication node, a first message from a second communication node, the first message including a second list of candidate frequencies for the second communication node; sending, by the first communication node, a second message to a user equipment (UE); receiving, by the first communication node, a third message from the UE, the third message including an in-device coexistence (IDC) report corresponding to the first list of candidate frequencies for the first communication node or the second list of candidate frequencies for the second communication node; and sending, by the first communication node to the second communication node, a fourth message, the fourth message including at least a portion of the IDC report corresponding to the second list of candidate frequencies for the second communication node.

[0006] In another embodiment, the present disclosure describes a method for wireless communication. The method includes: receiving, by a user equipment (UE), a second message from a first communication node, wherein the second message is sent by the first communication node in response to receiving a first message from a second communication node, the first message including a second list of candidate frequencies for the second communication node; and sending, by the UE, a third message to the first communication node, the third message including an in-device coexistence (IDC) report corresponding to the first list of candidate frequencies for the first communication node or the second list of candidate frequencies for the second communication node, wherein the first communication node is configured to send a fourth message to the second communication node, the fourth message including at least a portion of the IDC report corresponding to the second list of candidate frequencies for the second communication node.

[0007] In another embodiment, the present disclosure describes a method for wireless communication. The method includes: receiving, by a first communication node, UE assistance information from a user equipment (UE), the UE assistance information including an IDC report corresponding to at least one in-device coexistence (IDC) combination under MR-DC; sending, by the first communication node, a request to a second communication node, the request including first assistance information of the first communication node; and receiving, by the first communication node, a request confirmation from the second communication node.

[0008] In another embodiment, the present disclosure describes a method for wireless communication. The method includes: sending UE assistance information to a first communication node by a user equipment (UE), the UE assistance information including an IDC report corresponding to at least one in-device coexistence (IDC) combination under MR-DC; and receiving a radio resource control (RRC) reconfiguration message from the first communication node by the UE.

[0009] In some other embodiments, an apparatus for wireless communication may include a memory storing instructions and a processing circuit in communication with the memory. When the processing circuit executes the instructions, the processing circuit is configured to implement any of the above methods.

[0010] In some other embodiments, a device for wireless communication may include a memory storing instructions and a processing circuit in communication with the memory. When the processing circuit executes the instructions, the processing circuit is configured to implement any of the above methods.

[0011] In some other embodiments, a computer-readable medium includes instructions that, when executed by a computer, cause the computer to implement any of the above methods.

[0012] The above and other aspects and embodiments thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1A An example of a wireless communication system including a radio network node and one or more user equipments is shown.

[0014] Figure 1B A schematic diagram showing in-device co-existence interference within the same UE.

[0015] Figure 2 An example of a network node is shown.

[0016] Figure 3 An example of a user device is shown.

[0017] Figure 4A A flow chart of a method for wireless communication is shown.

[0018] Figure 4B A flow chart of another method for wireless communication is shown.

[0019] Figure 5A A flow chart of another method for wireless communication is shown.

[0020] Figure 5B A flow chart of another method for wireless communication is shown.

[0021] Fig. 6A A schematic diagram of a non-limiting embodiment for wireless communication is shown.

[0022] Figure 6B A schematic diagram of another non-limiting embodiment for wireless communication is shown.

[0023] Figure 6CA schematic diagram of another non-limiting embodiment for wireless communication is shown.

[0024] Fig. 7A A schematic diagram of a non-limiting embodiment for wireless communication is shown.

[0025] Figure 7B A schematic diagram of another non-limiting embodiment for wireless communication is shown.

[0026] Figure 7C A schematic diagram of another non-limiting embodiment for wireless communication is shown.

[0027] Fig. 8A A schematic diagram of a non-limiting embodiment for wireless communication is shown.

[0028] Figure 8B A schematic diagram of another non-limiting embodiment for wireless communication is shown.

[0029] Fig. 9 A schematic diagram of another non-limiting embodiment for wireless communication is shown.

[0030] Fig.10 A schematic diagram of another non-limiting embodiment for wireless communication is shown.

[0031] Fig.11 A schematic diagram of another non-limiting embodiment for wireless communication is shown.

[0032] Fig.12 A schematic diagram of another non-limiting embodiment for wireless communication is shown.

[0033] Fig.13 A schematic diagram of another non-limiting embodiment for wireless communication is shown. DETAILED DESCRIPTION

[0034] The present disclosure will now be described in detail below with reference to the accompanying drawings, which form a part of the present disclosure and show specific examples of embodiments by way of illustration. However, it is noted that the present disclosure can be embodied in a variety of different forms, and thus the subject matter covered or claimed is intended to be interpreted as not being limited to any of the embodiments set forth below.

[0035] Throughout the specification and claims, terms may have nuanced meanings that are suggested or implied in the context beyond the explicitly stated meanings. Similarly, the phrases "in one embodiment" or "in some embodiments" used herein do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" used herein do not necessarily refer to different embodiments. The phrases "in one embodiment" or "in some embodiments" used herein do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" used herein do not necessarily refer to different embodiments. For example, it is intended that the claimed subject matter includes, in whole or in part, a combination of exemplary embodiments or embodiments.

[0036] Typically, terms may be understood at least in part from usage in context. For example, terms such as "and", "or" or "and / or" used herein may include various meanings that may depend at least in part on the context in which the terms are used. Typically, "or" if used for an association list (such as A, B or C) is intended to represent A, B and C (here used for inclusive meanings), and A, B or C (here used for exclusive meanings). In addition, depending at least in part on the context, the terms "one or more" or "at least one" used herein may be used to describe any feature, structure or characteristic in a singular sense, or may be used to describe a combination of features, structures or characteristics in a plural sense. Similarly, depending at least in part on the context, terms such as "a", "an" or "the" may also be understood to convey singular usage or to convey plural usage. In addition, the term "based on" or "determined by..." may be understood to not necessarily be intended to convey a set of factors that are exclusive, but, also at least in part on the context, may allow for the presence of additional factors that are not necessarily explicitly described.

[0037] The present disclosure describes methods and devices for reporting in-device coexistence (IDC) interference.

[0038] Next generation (NG) (or fifth generation (5G)) wireless communications can provide a range of capabilities from fast downloads to support for real-time low-latency communications. New generation (NG) mobile communication systems are pushing the world towards an increasingly connected and networked society.

[0039] An emerging trend in mobile communications is to use multiple wireless technologies in parallel in user equipment (UE), which includes but is not limited to mobile devices, tablets, and other communication modules. To support such parallel operation, the device is equipped with more than one wireless transceiver, which is located in close proximity to each other. When one or more wireless transceivers are operating, one or more nearby transceivers may interfere with each other, resulting in in-device coexistence (IDC) interference.

[0040] like Figure 1B As shown, due to the close proximity of multiple wireless transceivers within the same UE, the transmission power of one transmitter may be much higher than the receiving power level of another receiver. For non-limiting examples, the UE may include a first transceiver for long term evolution (LTE), a second transceiver for GPS (Global Position System), a third transceiver for WiFi (Wireless Fidelity), and / or a fourth transceiver for Bluetooth (BT). IDC interference may exist between any combination of the above transceivers. For example, when the first transceiver transmits or receives on a frequency carrier or a combination of more than one frequency carrier, there may be a first interference 182 to the second transceiver, and / or a second interference 184 to the third transceiver; and / or when the third transceiver transmits or receives on a frequency carrier or a combination of more than one frequency carrier, there may be a third interference 186 to the second transceiver, and / or a second interference.

[0041] In some embodiments, in order to solve these problems, IDC-related mechanisms can be introduced. For example, in LTE, when the network indicates to report IDC auxiliary information, IDC can be triggered for both the serving frequency and the non-serving frequency. In addition, both the current IDC problems and potential IDC problems on the secondary frequency and the non-serving frequency (for which the measurement object is configured) can be reported. In some embodiments, similar IDC solutions can be introduced for new radio (NR) and / or evolved universal terrestrial radio access (EUTRA) and NR dual connectivity (EUTRA and NRduel connectivity, EN-DC) situations.

[0042] In some embodiments, an IDC solution in NR may be carrier-based, which leads to a problem that the affected frequencies cannot be adequately indicated by the NR frequency division multiplexing (FDM) solution. In some other embodiments, the FDM enhancement may be based on a frequency range. In some embodiments, in addition to the enhancements to UAI reporting, there may be some issues associated with IDC in configuring multiple radio access technologies (Multi-RAT) dual connectivity (MR-DC), such as how to configure IDC reporting using FDM enhancements under the MR-DC structure, and / or how the master node (MN) and the secondary node (SN) coordinate with each other.

[0043] In some implementations of NR standalone (SA) IDC, the network may configure the user equipment (UE) to report IDC using Asn.1 coding in the “Otherconfig” element of the following RRCReconfiguration message.

[0044]

[0045] In the above, candidateServingFreqListNR can indicate the center frequency for each candidate NR serving cell, and the UE is requested to report IDC problems around this center frequency.

[0046] In some implementations, when IDC is triggered, the UE may report IDC assistance information as follows.

[0047]

[0048]

[0049] In some embodiments, for EN-DC, IDC interference caused by simultaneous MN and SN transmissions may be introduced; and the network may configure the candidate NR frequency list for the NR side of EN-DC in the "Otherconfig" element of the RRCReconfiguration message as follows.

[0050]

[0051] In some implementations, some inter-node coordination is required to configure the candidate frequency list. For example, the SN may provide the MN with the frequencies of the candidate serving cells, and the MN may include the frequencies of the candidate serving cells together with the MN candidate frequencies in other configurations.

[0052] CandidateServingFreqListNR::=SEQUENCE(SIZE(1..maxFreqIDC-MRDC))OFARFCN-ValueNR(sequence of ARFCN-valueNR(size(1..maxFreqIDC-MRDC)))

[0053] In the above, candidateServingFreqListNR may indicate the frequencies of candidate serving cells for in-device coexistence indication.

[0054] In some implementations, the UE may report the MR-DC IDC interference to the network, and when the MN receives such assistance information, the MN further indicates the MR-DC related IDC interference information to the SN.

[0055]

[0056] In the above, mrdc-AssistanceInfo may include IDC assistance information for MR-DC reported by the UE.

[0057] In some implementations, for IDC FDM enhancement, the UE will report a finer granularity frequency range to the network.There may be some issues associated with how to coordinate the assistance information between the MN and the SN.

[0058] Figure 1A A wireless communication system 100 is shown that includes a core network (CN) 110, a radio access network (RAN) 130, and one or more wireless communication devices (user equipment (UE)) (152, 154, and 156). The RAN 130 may include a wireless network base station, or a NG radio access network (NG-RAN) base station or node, which may include a node B (NB, e.g., gNB) in a mobile telecommunication environment. The UE may be referred to as a wireless communication device or a wireless communication terminal. In one embodiment, the core network 110 may include a 5G core network (5G core network, 5GC), and the interface 125 may include a new generation (NG) interface.

[0059] Reference Figure 1A, the first UE 152 may wirelessly receive one or more downlink communications 142 from the RAN 130 and wirelessly send one or more uplink communications 141 to the RAN 130. Similarly, the second UE 154 may wirelessly receive downlink communications 144 from the RAN 130 and wirelessly send uplink communications 143 to the RAN 130; and the third UE 156 may wirelessly receive downlink communications 146 from the RAN 130 and wirelessly send uplink communications 145 to the RAN 130. For example, but not limited to, the downlink communications may include a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH), and the uplink communications may include a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH).

[0060] Figure 2 An exemplary radio access network or wireless communication base station 200 is shown. The base station 200 may include wireless transmitting / receiving (Tx / Rx) circuitry 208 to send / receive communications with one or more UEs and / or one or more other base stations. The base station may also include network interface circuitry 209 (e.g., optical or wired interconnect, Ethernet and / or other data transmission media / protocols) to enable the base station to communicate with other base stations and / or a core network. The base station 200 may optionally include an input / output (I / O) interface 206 to communicate with an operator or the like.

[0061] The base station may also include system circuitry 204. System circuitry 204 may include (one or more) processors 221 and / or memory 222. Memory 222 may include an operating system 224, instructions 226, and parameters 228. Instructions 226 may be configured for one or more processors 124 to perform the functions of the base station. Parameters 228 may include parameters that support the execution of instructions 226. For example, the parameters may include network protocol settings, bandwidth parameters, radio frequency mapping allocations, and / or other parameters.

[0062] Figure 3An exemplary user equipment (UE) 300 is shown. UE 300 may be a mobile device, such as a smart phone or a mobile communication module provided in a vehicle. UE 300 may include a communication interface 302, a system circuit 304, an input / output (I / O) interface 306, a display circuit 308, and a storage device 309. Display circuit 308 may include a user interface 310. System circuit 304 may include any combination of hardware, software, firmware, or other logic / circuits. System circuit 304 may be implemented, for example, with one or more systems on a chip (SoC), application specific integrated circuits (ASIC), discrete analog and digital circuits, and other circuits. System circuit 304 may be part of the implementation of any desired function in UE 300. In this regard, the system circuit 304 may include logic to facilitate operations such as: decoding and playing music and video (e.g., MP3, MP4, MPEG, AVI, FLAC, AC3, or WAV decoding and playback); running applications; accepting user input; saving and retrieving application data; establishing, maintaining, and terminating cellular phone calls or data connections (e.g., for Internet connections); establishing, maintaining, and terminating wireless network connections, Bluetooth connections, or other connections; and displaying relevant information on the user interface 310. The user interface 310 and the input / output (I / O) interface 306 may include a graphical user interface, a touch-sensitive display, tactile feedback or other tactile output, voice or facial recognition input, buttons, switches, speakers, and other user interface elements. Additional examples of the I / O interface 306 include microphones, video and still image cameras, temperature sensors, vibration sensors, rotation and orientation sensors, headphone and microphone input / output jacks, Universal Serial Bus (USB) connectors, memory card slots, radiation sensors (e.g., IR (infrared) sensors), and other types of inputs.

[0063] Reference Figure 3, the communication interface 302 may include radio frequency (RF) transmit (Tx) and receive (Rx) circuits 316 that process the transmission and reception of signals through one or more antennas 314. The communication interface 302 may include one or more transceivers. The transceiver may be a wireless transceiver that includes modulation / demodulation circuitry, a digital to analog converter (DAC), a shaping table, an analog to digital converter (ADC), a filter, a waveform shaper, a filter, a pre-amplifier, a power amplifier, and / or other logic for transmitting and receiving through one or more antennas or (for some devices) through a physical (e.g., wired) medium. The transmitted and received signals may follow any of a variety of formats, protocols, modulations (e.g., QPSK (Quadrature Phase Shift Keying), 16-QAM (Quadrature Amplitude Modulation), 64-QAM or 256-QAM), frequency channels, bit rates, and encodings. As a specific example, the communication interface 302 may include a transceiver that supports transmission and reception under the following standards: 2G, 3G, BT (Bluetooth), WiFi (Wireless Fidelity), Universal Mobile Telecommunications System (UMTS), High Speed ​​Packet Access (HSPA)+, 4G / Long Term Evolution (LTE), 5G, or any future wireless communication standard. However, the techniques described below, whether from the 3rd Generation Partnership Project (3GPP), the GSM (Global System for Mobile Communications) Association, 3GPP2, the IEEE (Institute of Electrical and Electronics Engineers), or other partners or standards bodies, are applicable to other wireless communication technologies.

[0064] Reference Figure 3, the system circuit 304 may include one or more processors 321 and a memory 322. The memory 322 stores, for example, an operating system 324, instructions 326, and parameters 328. The processor 321 is configured to execute the instructions 326 to implement the desired functions of the UE 300. The parameters 328 may provide and specify configuration and operating options for the instructions 326. The memory 322 may also store any BT, WiFi, 3G, 4G, 5G, or other data that the UE 300 will send or has received through the communication interface 302. In various embodiments, the system power of the UE 300 may be supplied by a power storage device (such as a battery or a transformer).

[0065] The present disclosure describes various embodiments of methods and apparatus for reporting in-device coexistence (IDC) interference, which may be implemented in part or in whole in the above Figure 2 and Figure 3 The method is implemented on a wireless network base station and / or a user equipment described in the embodiment.

[0066] In various embodiments, Figure 4A A flow chart of a method 400 for wireless communication is shown. The method 400 may include some or all of the following steps: step 410, receiving, by a first communication node, a first message from a second communication node, the first message including a second list of candidate frequencies for the second communication node; step 420, sending, by the first communication node, a second message to a user equipment (UE); step 430, receiving, by the first communication node, a third message from the UE, the third message including an in-device coexistence (IDC) report corresponding to the first list of candidate frequencies for the first communication node or the second list of candidate frequencies for the second communication node; and / or step 440, sending, by the first communication node to the second communication node, a fourth message, the fourth message including at least a portion of the IDC report corresponding to the second list of candidate frequencies for the second communication node.

[0067] In various embodiments, Figure 4BA flow chart of a method 450 for wireless communication is shown. The method 450 may include some or all of the following steps: step 460, receiving, by a user equipment (UE), a second message from a first communication node, wherein the second message is sent by the first communication node in response to receiving a first message from a second communication node, the first message including a second list of candidate frequencies for the second communication node; and / or step 470, sending, by the UE, a third message to the first communication node, the third message including an in-device coexistence (IDC) report corresponding to the first list of candidate frequencies for the first communication node or the second list of candidate frequencies for the second communication node, wherein the first communication node is configured to send a fourth message to the second communication node, the fourth message including at least a portion of the IDC report corresponding to the second list of candidate frequencies for the second communication node.

[0068] In some embodiments, in any one or any combination of the described embodiments / implementations, the first communication node includes a master network node (MN (also called a master node)), and / or the second communication node includes a secondary network node (SN (also called a secondary node)).

[0069] In some embodiments, in any one or any combination of the described embodiments / examples, the candidate frequency comprises a center frequency having a bandwidth or frequency range.

[0070] In some embodiments, in any one or any combination of the described embodiments / examples, the second message includes a first list of candidate frequencies for the first communication node or a second list of candidate frequencies for the second communication node; and / or the IDC report includes at least one of the following: a first IDC report corresponding to the first list of candidate frequencies for the first communication node, and / or a second IDC report corresponding to the second list of candidate frequencies for the second communication node, and / or a third IDC report corresponding to at least one frequency combination from the first list and the second list; and / or the fourth message includes the second IDC report or the third IDC report.

[0071] In some implementations, in any one or any combination of the described implementations / embodiments, the third IDC report corresponds to an IDC situation under multi-radio access technology dual connectivity (MR-DC).

[0072] In some embodiments, in any one or any combination of the described embodiments / implementations, the second message includes a frequency list for the second communication node, the frequency list including a second list of candidate frequencies for the second communication node that excludes any candidate frequencies that overlap with the first list of candidate frequencies for the first communication node.

[0073] In some embodiments, in any one or any combination of the described embodiments / examples, the first message includes a container indicating a second list of candidate frequencies for the second communication node; and / or the second message includes the container.

[0074] In some embodiments, in any one or any combination of the described embodiments / examples, the container includes a reconfiguration message; the third message includes an uplink (UL) information transmission, the UL information transmission includes an IDC report; and / or the fourth message includes a UL information transmission.

[0075] In some embodiments, in any one or any combination of the described embodiments / examples, the first message includes a container indicating a second list of candidate frequencies for the second communication node; the second message includes the container and the first list of candidate frequencies for the first communication node; the third message includes UL information transmission and UE auxiliary information, wherein the UL information transmission includes an IDC report corresponding to the second list of candidate frequencies for the second communication node, and / or the UE auxiliary information includes a first IDC report corresponding to the first list of candidate frequencies for the first communication node and a second IDC report corresponding to at least one frequency combination from the first list and the second list; and / or the fourth message includes the UL information transmission or the second IDC report.

[0076] In some embodiments, in any one or any combination of the described embodiments / implementations, before the first communication node sends a second message to the UE, the first communication node sends a fifth message including a first list of candidate frequencies for the first communication node and receives a first IDC report corresponding to the first list of candidate frequencies for the first communication node; the first message includes a container indicating a second list of candidate frequencies for the second communication node; the second message includes the container; the third message includes UL information transmission and UE auxiliary information, wherein: the UL information transmission includes an IDC report corresponding to the second list of candidate frequencies for the second communication node, and / or the UE auxiliary information includes a second IDC report corresponding to at least one frequency combination from the first list and the second list; and / or the fourth message includes the UL information transmission and the second IDC report.

[0077] In some embodiments, in any one or any combination of the described embodiments / examples, the second IDC report corresponds to an IDC situation under MR-DC.

[0078] In various embodiments, Figure 5A A flow chart of a method 500 for wireless communication is shown. The method 500 may include some or all of the following steps: step 510, receiving, by a first communication node, UE assistance information from a user equipment (UE), the UE assistance information including an IDC report corresponding to at least one in-device coexistence (IDC) combination under MR-DC; step 520, sending, by the first communication node, a request to a second communication node, the request including first assistance information of the first communication node; and / or step 530, receiving, by the first communication node, a request confirmation from the second communication node.

[0079] In various embodiments, Figure 5B A flow chart of a method 550 for wireless communication is shown. The method 550 may include some or all of the following steps: step 560, sending UE assistance information by a user equipment (UE) to a first communication node, the UE assistance information including an IDC report corresponding to at least one in-device coexistence (IDC) combination under MR-DC; and / or step 570, receiving a radio resource control (RRC) reconfiguration message from the first communication node by the UE.

[0080] In some embodiments, in any one or any combination of the described embodiments / examples, the request for confirmation includes second auxiliary information of the second communication node.

[0081] In some embodiments, in any one or any combination of the described embodiments / examples, the first communication node comprises a master network node (MN), and / or the second communication node comprises a secondary network node (SN).

[0082] In some embodiments, in any one or any combination of the described embodiments / examples, each of the at least one IDC combination under MR-DC is represented by an index corresponding to a predefined list of IDC combinations for more than one frequency range.

[0083] In some embodiments, in any one or any combination of the described embodiments / examples, each combination of at least one IDC combination under MR-DC is represented by more than one frequency range.

[0084] In some embodiments, in any one or any combination of the described embodiments / embodiments, the first auxiliary information indicates a first list of current serving frequency ranges of the first communication node, the first list being included in at least one IDC combination under MR-DC.

[0085] In some embodiments, in any one or any combination of the described embodiments / implementations, the first auxiliary information indicates a current serving frequency range and a first list of potential serving frequency ranges of the first communication node, and the first list is included in at least one IDC combination under MR-DC.

[0086] In some embodiments, in any one or any combination of the described embodiments / examples, the second auxiliary information indicates a second list of current serving frequency ranges of the second communication node, the second list being included in at least one IDC combination under MR-DC.

[0087] In some embodiments, in any one or any combination of the described embodiments / implementations, the second auxiliary information indicates a current serving frequency range and a second list of potential serving frequency ranges of the second communication node, and the second list is included in at least one IDC combination under MR-DC.

[0088] In some embodiments, in any one or any combination of the described embodiments / implementations, the first auxiliary information includes at least one of the following: one or more frequency bands and one or more frequency bandwidths or ranges, one or more indexes corresponding to one or more predefined frequency ranges, one or more disabled IDC indexes corresponding to a predefined list of IDC combinations, one or more available IDC indexes corresponding to a predefined list of IDC combinations, one or more disabled frequency ranges for the second communication node, and / or one or more allowed frequencies for the second communication node.

[0089] In some embodiments, in any one or any combination of the described embodiments / implementations, the second auxiliary information includes at least one of the following: one or more frequency bands and one or more frequency bandwidths or ranges, one or more indexes corresponding to one or more predefined frequency ranges, one or more disabled IDC indexes corresponding to a predefined list of IDC combinations, one or more available IDC indexes corresponding to a predefined list of IDC combinations, one or more disabled frequency ranges for the second communication node, and / or one or more allowed frequencies for the second communication node.

[0090] In some embodiments, in any one or any combination of the described embodiments / implementations, the service frequency range in the first list and the second list is represented by at least one of the following: a frequency range or a physical resource block (PRB) range.

[0091] In some embodiments, in any one or any combination of the described embodiments / examples, the frequency range is represented by one of: a center frequency and a bandwidth, a start frequency and an end frequency, or a start frequency and a bandwidth.

[0092] In some embodiments, in any one or any combination of the described embodiments / implementations, a centralized unit (CU) of a first communication node or a second communication node indicates a frequency range limitation to a distributed unit (DU) of the first communication node; and / or the DU of the first communication node configures cell resources based on the frequency range limitation.

[0093] In some implementations, in any one or any combination of the described implementations / embodiments, the frequency range limitation is for a primary cell (Pcell) or a secondary cell (SCell).

[0094] In some embodiments, in any one or any combination of the described embodiments / examples, the frequency range restriction includes at least one of: one or more frequency ranges, or one or more physical resource block (PRB) ranges.

[0095] In some embodiments, in any one or any combination of the described embodiments / examples, the frequency range is represented by one of: a center frequency and a bandwidth, a start frequency and an end frequency, or a start frequency and a bandwidth.

[0096] The first set of embodiments

[0097] The present disclosure describes various non-limiting embodiments for solving the problem of how the network configures IDC reporting about the MR-DC structure (for a non-limiting example, how the MN and SN configure IDC information). Based on whether the SN can independently configure the IDC information, there may be multiple methods: the first method (method 1) may include that only the MN can configure the IDC, and the SN cannot directly configure the IDC; and the second method (method 2) may include that both the MN and the SN can configure the IDC.

[0098] For the first method (method 1), the SN may indicate a candidate frequency list to the MN, the MN may include both the candidate frequency list of the SN and the candidate frequency list of the MN and send the candidate frequency list of the SN and the candidate frequency list of the MN to the UE. There may be multiple methods of how to configure the candidate frequency list: one method (method 1a) may include separately configuring the candidate frequency of the SN and the candidate frequency of the MN to the UE; and another method (method 1b) may include merging the candidate frequency of the SN and the candidate frequency of the MN into one candidate list.

[0099] For Method 1a, refer to Fig. 6A , the network may configure an IDC report on two candidate frequency lists, for example, the first list (FreqList 1) is for the MN and the second list (FreqList 2) is for the SN. The UE may report the IDC for the first frequency list and the IDC for the second frequency list separately (for example, in two different parts, the first part is for the first list and the second part is for the second list). The UE may also report the IDC generated by the combination of frequencies from the first frequency list and the second frequency list as the third part. When the MN receives the IDC report from the UE, the MN may forward the second part and / or the third part (for example, for the second frequency list) to the SN.

[0100] Reference Fig. 6A , describes an exemplary method in which a MN configures an IDC report on a separate list. The method includes some or all of the following steps.

[0101] Step 1: The SN indicates a candidate frequency list (or bandwidth / frequency range for each carrier together) to the MN.

[0102] Step 2: The MN configures an IDC report about 2 candidate frequency lists to the UE (eg, the first list is for the MN, and the second list is for the SN, the bandwidth / frequency range for each carrier may be sent together).

[0103] Step 3: The UE reports the IDC (including frequency range information) associated with the carriers in the candidate frequency list, and the IDC includes three parts. The first part is for the first candidate frequency list (e.g., for MCG (Master Cell group)), the second part is for the second frequency list (e.g., for SCG (Secondary Cell group)), and the third part is for the frequency combination from the first frequency list and the second frequency list (e.g., MR-DC). In some embodiments, the UE can report all IDCs together, the MN determines which IDCs are related to the SN, and the MN only sends the IDCs related to the SN to the SN.

[0104] Step 4: The MN forwards to the SN the IDC only related to the candidate frequencies indicated by the SN.

[0105] In some embodiments, as an enhancement, during step 2, the MN may also delete overlapping frequencies from the list indicated by the SN to avoid overlap, for example, FreqList 1 includes f1 / f2 / f3, and Freqlist 2 includes f4 / f5, wherein f3 is deleted because it is already included in MN FreqList 1. This enhancement improves the efficiency of this embodiment. Without the enhancement, the MR-DC IDC among f3 and f4 / f5 will be repeatedly reported in the IDC for SCG and the IDC for MR-DC.

[0106] For Method 1b, refer to Figure 6B , a part of the method may be similar to the conventional MR-DC IDC reporting process, and the difference is that the SN may also indicate to the MN the frequency range for each candidate frequency. When the UE reports the IDC to the MN, the MN may select the IDC including the SN candidate frequency and forward the IDC to the SN.

[0107] Reference Figure 6B , describes an exemplary method in which a MN configures an IDC report on a combined list. The method includes some or all of the following steps.

[0108] Step 1: The SN indicates a candidate frequency list (or bandwidth / frequency range for each carrier together) to the MN.

[0109] Step 2: The MN indicates a candidate frequency list (eg, including candidate frequencies for the MN and candidate frequencies for the SN) to the UE (or indicates the bandwidth / frequency range for each carrier together).

[0110] Step 3: The UE reports the IDC associated with the carriers in the candidate frequency list (eg, including frequency range information).

[0111] Step 4: The MN forwards to the SN the IDCs only related to the candidate frequencies indicated by the SN. In some implementations, the MN may forward to the SN the IDCs reported by all UEs.

[0112] Reference Figure 6C , describes another exemplary method in which the MN configures an IDC report only for a list of candidate frequencies indicated by the SN. In some implementations, the MN may not include any candidate frequencies from the MN side, but only include and send the SN frequency to the UE. The method may include some or all of the following steps.

[0113] Step 1: The SN indicates a candidate frequency list (or bandwidth / frequency range for each carrier together) to the MN.

[0114] Step 2: The MN indicates the candidate frequency list to the UE (eg, for the SN only, the bandwidth / frequency range for each carrier may be sent together).

[0115] Step 3: The UE reports the IDC (including frequency range information) associated with the carriers in the candidate frequency list.

[0116] Step 4: The MN forwards to the SN the IDC only related to the candidate frequencies indicated by the SN.

[0117] For the second method (Method 2), the SN can also configure the candidate frequency list independently of the MN side. Depending on whether a signaling radio bearer (SRB3) is involved, there may be several methods for how the SN configures the IDC: one method (Method 2a) may include the SN configuring the IDC without using SRB3; and another method (Method 2b) may include the SN using SRB3 to configure the IDC. As a type of radio bearer that carries signaling messages (i.e., RRC and / or NAS (Non-Access Stratum) messages), SRB3 is used for specific RRC messages when the UE is in EN-DC, and these specific RRC messages all use the DCCH (Downlink Control Channel, DCCH) logical channel. In the case of EN-DC, SRB3 can be configured to transmit some NR RRC messages between the UE and the secondary gNB via the NR radio interface.

[0118] For Method 2a, refer to Fig. 7A, the SN can configure the IDC independently. The SN candidate frequency list (e.g., as a container) can be transparent to the MN. On the UE side, the UE can report the IDC generated on the SN side to the network (e.g., using the ULInformationTransferMRDC (UL Information Transfer MRDC) message), which is also transparent to the MN. At the same time, when the MN also configures the IDC report, for example, in the case where the MN also indicates to report MR-DC IDC, the UE can also report the IDC generated by the frequency combination from both the MN and the SN in the UE Assistance Information (UE AssistanceInformation, UAI) message.

[0119] Reference Fig. 7A , describes an exemplary method in which the SN configures IDC without utilizing SRB3, for example, only the SN has IDC configuration and no IDC reporting is configured on the MN side. The method includes some or all of the following steps.

[0120] Step 1: The SN includes a reconfiguration message (ReconfigMessage) to the MN, wherein the reconfiguration message indicates a candidate frequency list (or indicates a frequency range for each carrier together) to the UE.

[0121] Step 2: The MN sends a message to the UE, where the message includes an nr-scg container.

[0122] Step 3: The UE reports the IDC (including frequency range information) to the SCG via UL information transmission.

[0123] Step 4: MN forwards UL information transmission to SN.

[0124] Reference Figure 7B , describes another exemplary method, in which the SN configures the IDC without using SRB3, and the MN and the SN configure the IDC simultaneously. The method includes some or all of the following steps.

[0125] Step 1: The SN includes a reconfiguration message (ReconfigMessage) to the MN, wherein the reconfiguration message indicates a candidate frequency list (or indicates the bandwidth / frequency range for each carrier together) to the UE.

[0126] Step 2: MN sends a message to UE, the message includes an nr-scg container, wherein the nr-scg container includes a freqList for SCG. In addition, MN also includes a candidate frequency list for MCG in "other config".

[0127] Step 3: The UE reports the IDC (including frequency range information) to the SCG through UL information transmission, and reports the UE auxiliary information to the MN for MR-DC.

[0128] Step 4: The MN forwards the UL information transmission and / or the above-mentioned UE assistance information (for MR-DC) to the SN.

[0129] For a non-limiting example, the MN configures FreqList 1 including f1 / f2 / f3, and the SN configures Freqlist 2 including f3 / f4 / f5. The UE reports the IDC generated by Freqlist 2 for the SCG using the UL information transmission message, and reports the IDC generated by the frequency combination from freqlist 1 and freqlist 2 for MR-DC and the IDC generated by Freqlist 1 for MCG to the MN in the UE assistance information.

[0130] Reference Figure 7C , describes another exemplary method, in which the SN configures the IDC without using SRB3, and the SN configures the IDC after the MN configures it. Compared with the above exemplary method, the difference of this exemplary method is that the MN configures the IDC first, and then the SN configures the IDC. The method may include some or all of the following steps.

[0131] Step 0: The MN configures the UE with the MN candidate frequency list 1 (eg, f1 / f2 / f3), and the UE reports the IDCs in the frequency list 1 (eg, f1 / f2 / f3).

[0132] Step 1: The SN includes a reconfiguration message (ReconfigMessage) to the MN, wherein the reconfiguration message indicates a candidate frequency list (or indicates the bandwidth / frequency range for each carrier together) to the UE.

[0133] Step 2: The MN sends a message to the UE, which includes an nr-scg container.

[0134] Step 3: The UE reports the IDC (eg, including PRB or frequency range information) to the SCG via UL information transmission, and may report the UE assistance information to the MN for the MR-DC.

[0135] Step 4: The MN forwards the UL information transmission and / or the above UE assistance information to the SN.

[0136] For a non-limiting example, the MN configures FreqList 1 including f1 / f2 / f3, and the SN configures Freqlist 2 including f3 / f4 / f5. The UE reports the IDC generated by Freqlist 2 to the SCG using the UL information transmission message, and at the same time, for example, in the case where the MN also indicates to report the MR-DC IDC, the IDC generated by the frequency combination from freqlist 1 and freqlist 2 is reported to the MN for MR-DC in the UE assistance information.

[0137] For Method 2b, refer to Fig. 8A , SN configures IDC via SRB3. On the UE side, the UE reports the IDC generated on the SN side to the network via SRB3. At the same time, when the MN also configures IDC reporting, for example, when the MN also indicates to report MR-DC IDC, the UE can also report the IDC generated by the frequency combination of both the MN and the SN.

[0138] Reference Fig. 8A , describes another exemplary method, in which the SN configures the IDC using SRB3. The method includes some or all of the following steps.

[0139] Step 0: The MN and SN negotiate candidate frequencies for each cell group (CG), for example, to determine which carrier should be reported by the MN or the SN.

[0140] Step 1: The MN indicates a candidate frequency list to the UE. For example, the candidate frequency list may be sent to the UE together with the bandwidth / frequency range for each carrier.

[0141] Step 2: The UE reports to the MN the IDC related to the carrier configured by the MN in the candidate frequency list (including frequency range information, denoted as IDC Report 1). In some implementations, when the UE has received the SN configuration or the UE needs to report the IDC for MR-DC using a separate message before step 3 (denoted as IDC Report 3), in this step, the UE may report the IDC for MR-DC together (denoted as IDC Report 3).

[0142] Step 1a: The SN indicates the candidate frequency list to the UE, for example, the bandwidth / frequency range for each carrier may be sent to the UE together.

[0143] Step 2a: The UE reports to the SN the IDC related to the carrier configured by the SN in the candidate frequency list (referred to as IDC report 2), and the IDC may include frequency range information.

[0144] Step 3: The MN forwards the IDC including both the candidate frequencies configured by the MN and the candidate frequencies configured by the SN to the SN (referred to as IDC Report 3).

[0145] Reference Figure 8B , describes another exemplary method, in which the SN configures the IDC using SRB3, and only the SN has the IDC configuration. The method includes some or all of the following steps.

[0146] Step 0: MN negotiates with SN the candidate frequencies for each CG.

[0147] Step 1a: The SN indicates the candidate frequency list to the UE (may be sent together with the bandwidth / frequency range for each carrier).

[0148] Step 2a: The UE reports to the SN the IDC (including frequency range information, denoted as IDC Report 2) related to the carrier configured by the SN in the candidate frequency list.

[0149] Step 3: The UE reports the IDC for the MR-DC to the MN node (referred to as IDC report 3).

[0150] Step 4: The MN forwards the IDC including both the candidate frequencies configured by the MN and the candidate frequencies configured by the SN to the SN (referred to as IDC Report 3).

[0151] In some of the exemplary methods, this also means that the MR-DC IDC report can be triggered by the SCG IDC configuration, for example, the MN first configures the IDC (e.g., candidate frequency list 1), and then the SN configures the IDC (candidate frequency list 2). The UE can report the IDC generated by at least 1 frequency from the candidate frequency list 1 and at least 1 frequency from the candidate frequency list 2, and / or the UE can report the IDC under the condition that the MN indicates the MR-DC IDC report. Similarly, when the SCG has configured the IDC report before the MCG configuration, the MR-DC IDC report can be triggered by the MCG IDC configuration.

[0152] Second Group of Embodiments

[0153] The present disclosure describes various non-limiting embodiments for solving the problem of how the MN indicates IDC interference information to the SN. In some embodiments, there may be some problems, for example, the UE reports MR-DC IDC on frequency combinations; and as an enhancement, the UE may report FDM information of small granularity. Therefore, the MN and SN may also need to consider these small granularity FDM information. For non-limiting examples, refer to Fig. 9, MN: F1: PRB (or frequency) range 1, PRB (or frequency) range 2; SN: F2: PRB (or frequency) range 1, PRB (or frequency) range 2; IDC 1: F1 PRB (or frequency) range 1 + F2 PRB (or frequency) range 1; and IDC 2: F1 PRB (or frequency) range 2 + F2 PRB (or frequency) range 2, which means that when the UE transmits (Tx) in F1 PRB (or frequency) range 1 + F2 PRB (or frequency) range 1 at the same time (or in F1 PRB (or frequency) range 2 + F2 PRB (or frequency) range 2 at the same time), there may be IDC interference to non-3gpp RAT. In other words, when the UE transmits in F1 PRB (or frequency) range 1 and F2 PRB (or frequency) range 2, there may be no IDC interference. Fig. 9 An IDC combination (Comb) with a PRB range is shown. In some embodiments, when the MN only indicates to the SN that F1 is selected, but does not indicate the PRB (or frequency) range information to the SN, the SN may regard all frequency ranges on F2 as invalid. This may result in inefficient use of frequency resources.

[0154] In various embodiments, as an overall process of MN-SN coordination, the MN may forward the IDC reported by the UE to the SN, and in addition to the UE reporting the IDC information, the MN may indicate some other auxiliary information to assist in the SN RB (or frequency) range selection. The auxiliary information to the SN may include one or more of the following: for one option (option 1), the MN / SN only exchanges the current serving PRB (or frequency) range included in the MR-DC IDC combination; for another option (option 2), the MN / SN exchanges both the current serving PRB (or frequency) range and the potential serving PRB (or frequency) range included in the MR-DC IDC combination. In some embodiments, the MN / SN may explicitly or implicitly exchange relevant PRB (or frequency) range information, for example, through an IDC combination index or a PRB (or frequency) range index. For non-limiting examples, Fig.10 The overall process of MN-SN coordination is shown, which may include part or all of the following steps.

[0155] Step 1: The UE sends auxiliary information (including MR-DC IDC auxiliary information) to the MN.

[0156] Step 2: The MN explicitly / implicitly determines the serving PRB (or frequency) range pool (or non-serving PRB (or frequency) range / potential serving PRB (or frequency) range) and MR-DC IDC assistance information for the SN (or secondary gNB (SgNB)).

[0157] Step 3: The SN determines the available PRB (or frequency) range based on the information indicated by the MN (e.g., the serving frequency range information, the MR-DC IDC combination list in the MR-DC assistance information). The SN may also explicitly / implicitly indicate the serving PRB (or frequency) range (or non-serving PRB (or frequency) range / potential serving PRB (or frequency) range) to the MN.

[0158] Step 4 to step 6: complete the reconfiguration process, for example, in step 4, the MN sends an RRC reconfiguration (RRCReconfiguration) to the UE; in step 5, the UE sends an RRC reconfiguration completion (RRCReconfigurationComplete) to the MN; and / or in step 6, the MN sends an SgNB reconfiguration completion message to the SN.

[0159] Various embodiments include methods for performing UAI reporting in step 1 above. For step 1, in order to reduce signaling overhead, there may be several methods for reporting IMD (inter-modulation distortion) IDC: the first method (method 1) includes: first defining a list of PRB (or frequency) ranges, and then representing the IDC combination by the PRB (or frequency) range index; and / or the second method (method 2) includes: immediately / directly representing the IDC combination by the PRB (or frequency) range.

[0160] For the first method (Method 1), a non-limiting example may include the following ASN.1 for IDC reporting on a frequency (PRB) range.

[0161]

[0162] For the second method (Method 2), a non-limiting example may include the following ASN.1 for IDC reporting on a frequency (PRB) range.

[0163]

[0164]

[0165] In some embodiments, the above-mentioned PRB range can be expressed in the following three ways: the first way (option 1): the center frequency + bandwidth of the actual affected frequency range; the second way (option 2): the starting frequency + end frequency of the actual affected frequency range; and / or the third way (option 2a): the starting frequency + bandwidth of the actual affected frequency range.

[0166] In the embodiments / implementations, one of the above three ways / options may be used only as an example, and any other way / option for representing the PRB range may be similarly applicable to any or all of the embodiments / implementations described in the present disclosure. For the following description, option 1 may be used as a non-limiting example.

[0167] Various embodiments include methods for exchanging additional auxiliary information in the above step 2 and / or step 3. For step 2 / step 3, various methods can be performed to solve one or all of the following problems: the first problem includes what additional information should be exchanged between the MN and the SN; and / or the second problem includes how to exchange this additional information between the MN and the SN.

[0168] To solve the first problem, there may be several options: the first option (option 1) includes: the UE only exchanges the current serving PRB (or frequency) range included in the MR-DC IDC combination; and / or the second option (option 2) includes: the UE exchanges both the current serving PRB (or frequency) range and the potential serving PRB (or frequency) range included in the MR-DC IDC combination.

[0169] To solve the first problem, a method may include: the UE may explicitly or implicitly exchange relevant PRB (or frequency) range information, for example, through an IDC combination index or a PRB (or frequency) range index.

[0170] Fig.11 A non-limiting example of IDC regarding serving frequencies only is shown, where MN serving cell: f1 PRB (or frequency) range 1; SN serving cell: f2 PRB (or frequency) range 1; and f3 is a non-serving frequency.

[0171] For the first option (option 1), the UE may indicate f1 PRB (or frequency) range 1 to the SN, and the SN may avoid f2 PRB (or frequency) range 1. In some embodiments, for the implicit approach: the UE may indicate the MR-DC IDC combination index to the SN (e.g., Fig.11 or the UE may indicate an available MR-DC IDC combination index (2 / 3 / 4 / 5) and the MN may indicate an allowed PRB (or frequency) range for the SN, for example, PRB (or frequency) range 3.

[0172] For a non-limiting example of the first option (option 1), for an explicit approach, the MN may send the following to the SN: F1+PRB (or frequency) range 1. For an implicit approach, a first solution may include indicating the corresponding PRB (or frequency) range index "F1+PRB (or frequency) range 1" (for method 1 above), a second solution may include a prohibited MR-DC IDC combination index (1 / x), a third solution may include an available MR-DC IDC combination index (2 / 3 / 4 / 5), and / or a fourth solution may include an allowed (or prohibited) PRB (or frequency) range at the SN, for example, an allowable PRB (or frequency) range 3.

[0173] For the second option (Option 2), refer to Fig.12 , the UE may indicate f1 PRB (or frequency) range 1 and some other potential serving PRB (or frequency) ranges (for potential switching, for example, PRB (or frequency) range 2 of f1 or PRB (or frequency) range 1 of f3). In some embodiments for implicit mode, the UE may indicate to the SN that the MR-DC IDC combination index (1, x, 2, and 4) is a prohibited MR-DC IDC combination, and then the SN may avoid f2 PRB (or frequency) range 1 / PRB (or frequency) range 2; or the UE may indicate an available MR-DC IDC combination index (3 / 5), or the MN may indicate an allowed PRB (or frequency) range for the SN, for example, PRB (or frequency) range 3. Fig.12 The IDC for both serving and non-serving frequencies is shown.

[0174] For a non-limiting example of the second option (Option 2), refer to Fig.12 , for the explicit mode, the MN sends the following to the SN: F1+PRB (or frequency) range 1, PRB (or frequency) range 2, and F3+PRB (or frequency) range 1. For the implicit mode, the first solution includes: indicating the corresponding PRB (or frequency) range index "F1+PRB (or frequency) range 1, PRB (or frequency) range 2, F3+PRB (or frequency) range 1" (for method 1 above); the second solution includes the prohibited MR-DC IDC combination index (1 / 2 / 4 / x); the third solution includes the available MR-DC IDC combination index (3 / 5); the fourth solution includes the allowed (or prohibited) PRB (or frequency) range at the SN.

[0175] For another non-limiting example of the second option (Option 2), refer to Fig.13, there are more than 2 carriers, for example, for IDCs regarding more than 2 UL frequency band entries, where IMD combination 1: f1: PRB (or frequency) range 1 + f2 PRB (or frequency) range 1 + f3 PRB (or frequency) range 1; IMD combination 2: f1: PRB (or frequency) range 2 + f2 PRB (or frequency) range 2 + f3 PRB (or frequency) range 1; and / or IMD combination 3: f1: PRB (or frequency) range 3 + f2 PRB (or frequency) range 2 + f3 PRB (or frequency) range 3. In some embodiments, at the MN side, the MN may configure a serving cell on f1: PRB (or frequency) range 1 / 2 and f2 PRB (or frequency) range 1. For the explicit mode, the MN sends the following to the SN: F1+PRB (or frequency) range 1, PRB (or frequency) range 2, F3+PRB (or frequency) range 1. For the implicit mode, the first solution includes indicating the corresponding PRB (or frequency) range index "F1+PRB (or frequency) range 1, PRB (or frequency) range 2, F3+PRB (or frequency) range 1 (for the above method 1); and the second solution includes a prohibited MR-DC IDC combination index (1) for MR-DC IDC combination 2, wherein the UE needs to indicate an entry that has been included on the MN side, for example, entry [0] = f1 PRB (or frequency) range 2, and the MN can know that it should avoid using f2 PRB (or frequency) range 2 + f3 PRB (or frequency) range 1 at the same time; the third solution includes an available MR-DC IDC combination index (3); and / or the fourth solution includes an allowed (or prohibited) PRB (or frequency) range at the SN.

[0176] In the above example, the SN will determine the affected (eg, available / prohibited) MR-IDC combinations based on the index and MR-DC IDC assistance information (eg, MRDC-AssistanceInfo as defined above, which will also be transmitted by the MN to the SN node).

[0177] Various embodiments may include a method for frequency range impact F1 interface, wherein the CU may indicate frequency range restriction information to the DU, and the DU may consider the frequency range restriction information when configuring cell resources to the UE.

[0178] Table 1 shows a non-limiting example for adding a frequency range restriction to a UE CONTEXT SETUP / MODIFICATION REQUEST.

[0179] Table 1: Adding frequency range limits

[0180]

[0181]

[0182]

[0183] In some embodiments, each of the "frequency range limits" in Table 1 may include one or more frequency ranges, and the frequency range may be represented by at least one of the following: a center frequency and a bandwidth, or a start frequency and an end frequency, or a start frequency and a bandwidth.

[0184] The present disclosure describes methods, apparatus, and computer-readable media for wireless communications. The present disclosure solves the problem of IDC interference reporting. The methods, devices, and computer-readable media described in the present disclosure can improve the performance of wireless communications by reporting IDC interference, thereby improving efficiency and overall performance. The methods, devices, and computer-readable media described in the present disclosure can improve the overall efficiency of wireless communication systems.

[0185] References to features, advantages, or similar language throughout the specification do not imply that all features and advantages that may be achieved with the present solution should be or are included in any single embodiment thereof. Rather, language referencing such features and advantages is understood to mean that a particular feature, advantage, or characteristic described in connection with an embodiment is included in at least one embodiment of the present solution. Thus, discussion of features and advantages and similar language throughout the specification may, but need not, refer to the same embodiment.

[0186] In addition, the features, advantages, and characteristics of the present solution may be combined in any suitable manner in one or more embodiments. Based on the description herein, one of ordinary skill in the relevant art will recognize that the present solution may be practiced without one or more of the specific features or advantages of a particular embodiment. In other cases, additional features and advantages may be recognized in certain embodiments that may not be present in all embodiments of the present solution.

Claims

1. A method for wireless communication, comprising: receiving, by a first communication node, a first message from a second communication node, the first message comprising a second list of candidate frequencies for the second communication node; The first communication node sends a second message to a user equipment (UE); receiving, by the first communication node, a third message from the UE, the third message comprising an in-device coexistence (IDC) report corresponding to a first list of candidate frequencies for the first communication node or a second list of candidate frequencies for the second communication node; as well as A fourth message is sent by the first communication node to the second communication node, wherein the fourth message includes at least a portion of the IDC report corresponding to the second list of candidate frequencies for the second communication node.

2. A method for wireless communication, comprising: receiving, by a user equipment (UE), a second message from a first communication node, wherein the second message is sent by the first communication node in response to receiving a first message from a second communication node, the first message comprising a second list of candidate frequencies for the second communication node; and The UE sends a third message to the first communication node, the third message including an in-device coexistence (IDC) report corresponding to the first list of candidate frequencies for the first communication node or the second list of candidate frequencies for the second communication node, wherein the first communication node is configured to send a fourth message to the second communication node, the fourth message including at least a portion of the IDC report corresponding to the second list of candidate frequencies for the second communication node.

3. The method according to any one of claims 1 to 2, wherein: The first communication node comprises a master network node (MN), and The second communication node comprises a secondary network node (SN).

4. The method according to any one of claims 1 to 2, wherein: The candidate frequencies include a center frequency having a bandwidth or a frequency range.

5. The method according to any one of claims 1 to 2, wherein: The second message includes the first list of candidate frequencies for the first communication node or the second list of candidate frequencies for the second communication node; The IDC report includes at least one of the following: a first IDC report corresponding to the first list of candidate frequencies for the first communication node, a second IDC report corresponding to the second list of candidate frequencies for the second communication node, or a third IDC report corresponding to at least one frequency combination from the first list and the second list; and The fourth message includes the second IDC report or the third IDC report.

6. The method according to claim 5, wherein: The third IDC report corresponds to an IDC situation under multi-radio access technology dual connectivity (MR-DC).

7. The method according to claim 5, wherein: The second message includes a frequency list for the second communication node, the frequency list for the second communication node including the second list of candidate frequencies for the second communication node excluding any candidate frequencies that overlap with the first list of candidate frequencies for the first communication node.

8. The method according to any one of claims 1 to 2, wherein: The first message includes a container indicating the second list of candidate frequencies for the second communication node; and The second message includes the container.

9. The method according to claim 8, wherein: The container includes a reconfiguration message; The third message comprises an uplink (UL) information transmission, the UL information transmission comprising the IDC report; and The fourth message includes the UL information transmission.

10. The method according to any one of claims 1 to 2, wherein: the first message comprising a container indicating the second list of candidate frequencies for the second communication node; the second message comprising the container and the first list of candidate frequencies for the first communication node; The third message includes UL information transmission and UE assistance information, wherein: The UL information transmission includes the IDC report corresponding to the second list of candidate frequencies for the second communication node, and The UE assistance information includes a first IDC report corresponding to the first list of candidate frequencies for the first communication node, and a second IDC report corresponding to at least one frequency combination from the first list and the second list; and The fourth message includes the UL information transmission or the second IDC report.

11. The method according to any one of claims 1 to 2, wherein: Before the first communication node sends the second message to the UE, the first communication node sends a fifth message including the first list of candidate frequencies for the first communication node, and receives a first IDC report corresponding to the first list of candidate frequencies for the first communication node; the first message comprising a container indicating the second list of candidate frequencies for the second communication node; The second message includes the container; The third message includes UL information transmission and UE assistance information, wherein: The UL information transmission includes the IDC report corresponding to the second list of candidate frequencies for the second communication node, and The UE assistance information includes a second IDC report corresponding to at least one frequency combination from the first list and the second list; and The fourth message includes the UL information transmission and the second IDC report.

12. The method according to any one of claims 10 to 11, wherein: The second IDC report corresponds to the IDC situation under MR-DC.

13. A method for wireless communication, comprising: Receiving, by a first communication node, UE assistance information from a user equipment (UE), the UE assistance information comprising an in-device coexistence (IDC) report corresponding to at least one IDC combination under MR-DC; The first communication node sends a request to a second communication node, where the request includes first auxiliary information of the first communication node; as well as A request confirmation is received by the first communication node from the second communication node.

14. A method for wireless communication, comprising: Sending, by a user equipment (UE), UE assistance information to a first communication node, the UE assistance information comprising an in-device coexistence (IDC) report corresponding to at least one IDC combination under MR-DC; as well as A radio resource control (RRC) reconfiguration message is received by the UE from the first communication node.

15. The method according to any one of claims 13 to 14, wherein: The request confirmation includes second auxiliary information of the second communication node.

16. The method according to any one of claims 13 to 14, wherein: The first communication node comprises a master network node (MN), and The second communication node comprises a secondary network node (SN).

17. The method according to any one of claims 13 to 14, wherein: Each of the at least one IDC combination under the MR-DC is represented by an index corresponding to a predefined list of IDC combinations of more than one frequency range.

18. The method according to any one of claims 13 to 14, wherein: Each of the at least one IDC combination under the MR-DC is represented by more than one frequency range.

19. The method according to any one of claims 13 to 14, wherein: The first assistance information indicates a first list of current serving frequency ranges of the first communication node, and the first list is included in the at least one IDC combination under the MR-DC.

20. The method according to any one of claims 13 to 14, wherein: The first auxiliary information indicates a current serving frequency range and a first list of potential serving frequency ranges of the first communication node, and the first list is included in the at least one IDC combination under the MR-DC.

21. The method according to any one of claims 13 to 14, wherein: The second assistance information indicates a second list of current serving frequency ranges of the second communication node, and the second list is included in the at least one IDC combination under the MR-DC.

22. The method according to any one of claims 13 to 14, wherein: The second auxiliary information indicates a current serving frequency range and a second list of potential serving frequency ranges of the second communication node, and the second list is included in the at least one IDC combination under the MR-DC.

23. A method according to any one of claims 19 to 22, wherein: The first auxiliary information includes at least one of the following: one or more frequency bands and one or more frequency bandwidths or ranges, one or more indices, the one or more indices corresponding to one or more predefined frequency ranges, one or more prohibited IDC indexes, the one or more prohibited IDC indexes corresponding to a predefined list of IDC combinations, one or more available IDC indexes, the one or more available IDC indexes corresponding to a predefined list of IDC combinations, one or more prohibited frequency ranges for the second communication node, or One or more allowed frequencies for the second communication node.

24. A method according to any one of claims 19 to 22, wherein: The second auxiliary information includes at least one of the following: one or more frequency bands and one or more frequency bandwidths or ranges, one or more indices, the one or more indices corresponding to one or more predefined frequency ranges, one or more prohibited IDC indexes, the one or more prohibited IDC indexes corresponding to a predefined list of IDC combinations, one or more available IDC indexes, the one or more available IDC indexes corresponding to a predefined list of IDC combinations, one or more prohibited frequency ranges for the second communication node, or One or more allowed frequencies for the second communication node.

25. A method according to any one of claims 19 to 22, wherein: The service frequency ranges in the first list and the second list are represented by at least one of the following: frequency range; or Physical Resource Block (PRB) range.

26. The method of claim 25, wherein: The frequency range is represented by one of the following: Center frequency and bandwidth, The start and end frequencies, or Start frequency and bandwidth.

27. The method according to any one of claims 1 to 2 and 13 to 14, wherein: A centralized unit (CU) of the first communication node or the second communication node indicates a frequency range restriction to a distributed unit (DU) of the first communication node; and The DU of the first communication node configures cell resources based on the frequency range restriction.

28. The method of claim 27, wherein: The frequency range limitation is for a primary cell (Pcell) or a secondary cell (Scell).

29. The method of claim 27, wherein: The frequency range limitation includes at least one of the following: one or more frequency ranges, or A range of one or more physical resource blocks (PRBs).

30. The method of claim 29, wherein: The frequency range is represented by one of the following: Center frequency and bandwidth, The start and end frequencies, or Start frequency and bandwidth.

31. A wireless communication device, comprising a processor and a memory, wherein: The processor is configured to read code from the memory and implement the method according to any one of claims 1 to 30.

32. A computer program product comprising a computer-readable program medium on which codes are stored, which, when executed by a processor, cause the processor to implement the method according to any one of claims 1 to 30.

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