Method, device and system for coordinating UE capabilities for dual standby state

Abstract

Methods, systems, and devices are described for coordinating user equipment (UE) capabilities for a dual standby state. In one embodiment, a method includes transmitting, by a UE, a first message to a network including a first indicator that indicates a UE capability limit to the network. Another method includes receiving, by a network from a UE, a first message including a first indicator indicating a UE capability restriction for the network.

Description

Technical Field

[0001] The present disclosure is generally directed to wireless communications. Specifically, the present disclosure relates to methods, devices, and systems for coordinating user equipment (UE) capabilities for a dual-active state. Background Art

[0002] Wireless communication technology is driving the world towards an increasingly interconnected and networked society. High-speed and low-latency wireless communications rely on efficient network resource management and allocation between user devices and wireless access network nodes (including but not limited to base stations). The next-generation network is expected to provide high-speed, low-latency and ultra-reliable communication capabilities, as well as meet the needs of different industries and users.

[0003] For fifth generation (5G) mobile communication technology, a user equipment (UE) (eg, a smartphone) may be registered with, and connected to, more than one network node at the same time.

[0004] The present disclosure may address at least some of the problems associated with existing systems and describes various embodiments for coordinating user equipment (UE) capabilities and improving the performance of wireless communications. Summary of the invention

[0005] The present disclosure relates to methods, systems, and devices for wireless communications, and more particularly to methods, systems, and devices for coordinating user equipment (UE) capabilities for a dual-active state.

[0006] In one embodiment, the present disclosure describes a method for wireless communication. The method includes sending, by a user equipment (UE) to a network, a first message including a first indicator indicating a UE capability limitation to the network.

[0007]

[0011] In another embodiment, the present disclosure describes a method for wireless communication. The method includes receiving, by a network from a user equipment (UE), a first message including a first indicator indicating a UE capability limitation to the network.

[0008] In some other embodiments, the apparatus for wireless communication may include: a memory storing instructions and a processing circuit system in communication with the memory. When the processing circuit system executes the instructions, the processing circuit system is configured to perform the above method.

[0009] In some other embodiments, the device for wireless communication may include: a memory storing instructions and a processing circuit system in communication with the memory. When the processing circuit system executes the instructions, the processing circuit system is configured to perform the above method.

[0010] In some other embodiments, the computer readable medium includes instructions that, when executed by a computer, cause the computer to perform the above method. The computer readable medium may be referred to as a non-transitory computer readable medium (CRM) that stores data for a long period (such as a flash drive or a compact disk (CD)), or stores data for a short period when powered on (such as a storage device or random access memory (RAM)).

[0011] The above and other aspects and implementations thereof are described in more detail in the drawings, the description and the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 An example of a wireless communication system comprising more than one network node and one or more user equipments is shown.

[0013] Figure 2 An example of a network node is shown.

[0014] Figure 3 An example of a user device is shown.

[0015] Figure 4 A flow chart of a method for wireless communication is shown.

[0016] Figure 5 A flow chart of a method for wireless communication is shown.

[0017] Figure 6 A schematic diagram of an exemplary embodiment for wireless communications is shown.

[0018] Figure 7 A schematic diagram of another exemplary embodiment for wireless communications is shown.

[0019] Figure 8 A schematic diagram of another exemplary embodiment for wireless communications is shown.

[0020] Fig. 9 A schematic diagram of another exemplary embodiment for wireless communications is shown. DETAILED DESCRIPTION

[0021] 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 implemented in a variety of different forms, and therefore, the subject matter covered or claimed should be construed as not being limited to any embodiment set forth below.

[0022] Throughout the specification and claims, terms may have implicit or tacit subtle meanings in context beyond the explicitly stated meaning. Likewise, the phrases "in one embodiment" or "in some embodiments" as used herein do not necessarily refer to the same embodiment, and the phrases "in another embodiment" or "in other embodiments" as used herein do not necessarily refer to different embodiments. The phrases "in one implementation" or "in some implementations" as used herein do not necessarily refer to the same implementation, and the phrases "in another implementation" or "in other implementations" as used herein do not necessarily refer to different implementations. For example, the claimed subject matter is intended to include all or part of a combination of exemplary embodiments or implementations.

[0023] In general, terms can be understood at least in part from the usage in the context. For example, terms as used herein (such as "and", "or" or "and / or") can include multiple meanings, which can depend at least in part on the context in which these terms are used. Typically, "or" is intended to represent A, B and C (used in an inclusive sense here), as well as A, B or C (used in an exclusive sense here) if used in an association list (such as A, B or C). In addition, the terms "one or more" or "at least one" as used herein depend at least in part on the context and can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Similarly, terms such as "one", "an" or "the" can also be understood to convey singular usage or convey plural usage, which depends at least in part on the context. In addition, the term "based on" or "determined on" can be understood to not necessarily be intended to convey an exclusive set of factors, but can allow for the existence of additional factors that are not necessarily explicitly described, which also depends at least in part on the context.

[0024] The present disclosure describes methods and apparatus for coordinating user equipment (UE) capabilities for a dual standby state.

[0025] Next-generation (NG) mobile communication systems are driving the world towards an increasingly connected and networked society. High-speed and low-latency wireless communications rely on efficient network resource management and allocation between user devices and wireless access network nodes (including but not limited to wireless base stations). The next-generation network is expected to provide high-speed, low-latency and ultra-reliable communication capabilities, as well as meet the needs of different industries and users.

[0026] The present disclosure describes various embodiments for coordinating multiple networks in a dual-active state. In one or more scenarios, a user equipment (UE) may be connected to more than one network node at the same time. The network nodes may include, for example, one or more radio access network (RAN) nodes, and / or one or more core network (CN) nodes. In one implementation, the UE may be connected to two network nodes at the same time, which may be referred to as a "dual-active state", which requires the UE and / or one or more network nodes to coordinate multiple connections, thereby providing an efficient system for one or more scenarios.

[0027] One scenario may include that for a UE with multiple subscriber identity modules (multi-SIM) (or multiple universal user identity modules (multi-USIM)), the UE may be connected to multiple networks simultaneously. In another scenario, a UE with a single SIM may be connected to multiple networks simultaneously. Another scenario may include that a roaming UE may connect to multiple networks for different slices.

[0028] When a UE is configured to connect to multiple networks simultaneously, coordination of UE capabilities may be required.In some implementations with Radio Access Capability Signaling (RACS), UE radio access capabilities may be packaged as a predefined or network defined UE capability ID.

[0029] In various embodiments, for multiple SIMs (or multiple USIMs), the UE may connect to multiple networks simultaneously for different situations.

[0030] In some implementations with paging received on the second subscriber identity module (SIM2) when the first subscriber identity module (SIM1) is in a connected state, this can be solved by time division multiplexing (TDM), such as reserving a scheduling gap for SIM2. For connections with two networks that are not established simultaneously, there may be no coordination. However, for dual receive / transmit (RX) UEs, this solution may affect the performance of SIM1 by reserving a scheduling gap with a paging cycle. Another solution for dual RX UEs is to reserve some radio frequency or physical (RF / PHY) resources for paging reception. In some implementations with a short dual connection state, SIM1 may be in a connected state, while SIM2 has to perform some mobility updates, such as periodic registration, moving to a new registration area, or responding to paging. The UE may require collaborative capabilities during the short dual connection state. In some implementations with a long dual connection state, the UE may have a voice call on SIM1 and some other data services on SIM2 at the same time. The UE may require collaborative capabilities.

[0031] There may be some issues / problems that need to be addressed. For example, the hardware capabilities of a multi-SIM (or multi-USIM) UE may be shared by more than one SIM. In order to use the hardware efficiently and economically, the relevant capabilities need to be dynamically divided between more than one SIM. This may cause temporary hardware conflicts. For example, a UE is connected to one network (network A) and it will have some capability restrictions on another network (network B). Therefore, when the UE enters the connected state with network B, the UE needs to indicate the capability restrictions to network B.

[0032] The present disclosure describes various embodiments for coordinating user equipment (UE) capabilities for dual standby state, addressing at least one of the above issues / problems, providing solutions and / or improving the performance of wireless communications.

[0033] Figure 1 A wireless communication system 100 is shown that includes more than one radio network node (118 and 119) and one or more user equipments (UEs) (110, 111, and 112).

[0034] For the fifth generation mobile communication technology, UE 110 (e.g., a smart phone) may have a single subscriber identity module (SIM) or multiple subscriber identity modules (multi-SIM). When the UE has a single SIM, the UE may be connected to one network node 118, such as a radio access network (RAN) node and / or a core network (CN) node, or may be connected to more than one network node (118 and 119), such as two RAN nodes and / or two CN nodes. When the UE has multiple SIMs, the UE may be connected to more than one network node (118 and 119), such as two RAN nodes, two CN nodes, and / or one RAN node and one CN node.

[0035] The radio network nodes (118 and 119) may include network base stations, which may be nodeBs (NBs, such as eNBs or gNBs) in the context of mobile telecommunications. Each UE (110, 111, and / or 112) may wirelessly communicate with a radio network node (118 and / or 119) via one or more radio channels 115. For example, a first UE 110 may wirelessly communicate with a first network node 118 via a channel comprising a plurality of radio channels during a certain period of time; during another period of time or at the same time, the first UE 110 may wirelessly communicate with a second network node 119 via a channel comprising a plurality of radio channels.

[0036] The present disclosure describes multiple embodiments for coordinating user equipment (UE) capabilities for dual standby state for at least one scenario, including but not limited to the scenario described above. The present disclosure describes methods, systems, and storage media for coordinating UE capabilities (e.g., UE capability limitation information) between the UE and multiple network nodes by UE and / or one or more network nodes.

[0037] Figure 2 An example of an electronic device 200 for implementing a network node or a network base station is shown. The example electronic device 200 may include a radio transmit / receive (Tx / Rx) circuit system 208 to transmit / receive communications with a UE and / or other base stations. The electronic device 200 may also include a network interface circuit system 209 to enable the base station to communicate with other base stations and / or a core network, for example, optical or wired interconnects, Ethernet, and / or other data transmission media / protocols. The electronic device 200 may optionally include an input / output (I / O) interface 206 to communicate with an operator or the like.

[0038] The electronic device 200 may also include a system circuit system 204. The system circuit system 204 may include (multiple) processors 221 and / or memory 222. The memory 222 may include an operating system 224, instructions 226, and parameters 228. The instructions 226 may be configured for one or more processors 221 to perform the functions of a network node. The parameters 228 may include parameters that support the execution of the instructions 226. For example, the parameters may include: network protocol settings, bandwidth parameters, radio frequency mapping allocations, and / or other parameters.

[0039] Figure 3 An example of an electronic device implementing a terminal device 300 (e.g., a user equipment (UE)) is shown. UE 300 may be a mobile device, such as a smart phone or a mobile communication module configured in a vehicle. UE 300 may include a communication interface 302, a system circuit system 304, an input / output interface (I / O) 306, a display circuit system 308, and a storage device 309. The display circuit system may include a user interface 310.

[0040] System circuitry 304 may include any combination of hardware, software, firmware, or other logic / circuitry. System circuitry 304 may be implemented, for example, using one or more systems on a chip (SoC), application specific integrated circuits (ASICs), discrete analog and digital circuits, and other circuitry. System circuitry 304 may be part of the implementation of any desired functionality in UE 300. In this regard, system circuitry 304 may include logic to facilitate: decoding and playing music and video, such as MP3, MP4, MPEG, AVI, FLAC, AC3, or WAV decoding and playing, as an example; running applications; accepting user input; saving and retrieving application data; establishing, maintaining, and terminating cellular phone calls or data connections, as an example, for Internet connections; establishing, maintaining, and terminating wireless network connections, Bluetooth connections, or other connections; and displaying relevant information on user interface 310. User interface 310 and 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 I / O interface 306 may 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 sensors), and other types of inputs.

[0041] refer to Figure 3, the communication interface 302 may include radio frequency (RF) transmit (Tx) and receive (Rx) circuitry 316 that handles 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, digital-to-analog converters (DACs), shaping tables, analog-to-digital converters (ADCs), filters, waveform shapers, filters, preamplifiers, power amplifiers, 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 wide variety of formats, protocols, modulations (e.g., QPSK, 16-QAM, 64-QAM, or 256-QAM), channels, bit rates, and encodings. As a specific example, the communication interface 302 may include a transceiver supporting transmission and reception under 2G, 3G, BT, WiFi, Universal Mobile Telecommunications System (UMTS), High Speed ​​Packet Access (HSPA) +, 4G / Long Term Evolution (LTE), 5G, and / or further developed standards. However, the techniques described below are applicable to other wireless communication technologies, whether from the Third Generation Partnership Project (3GPP), GSM Association, 3GPP2, IEEE, or other partners or standards bodies.

[0042] refer to Figure 3 , the system circuit system 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 perform the desired functions for 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, 6G, or other data that the UE 300 will send or has received through the communication interface 302. In various implementations, the system power for the UE 300 may be provided by a power storage device (such as a battery or a transformer).

[0043] The present disclosure describes the following embodiments, which may be implemented in part or in whole in the above Figures 2 to 3 On the network base station and / or user equipment described in.

[0044] refer to Figure 4 , the present disclosure describes an embodiment of a method 400 for wireless communication. The method 400 may include step 410, sending, by a user equipment (UE) to a network, a first message including a first indicator, the first indicator indicating a UE capability limitation to the network.

[0045] refer to Figure 5, the present disclosure describes an embodiment of a method 500 for wireless communication. The method 500 may include step 510, receiving, by a network from a user equipment (UE), a first message including a first indicator, the first indicator indicating a UE capability limitation to the network.

[0046] Without limiting the present disclosure, the various embodiments described below may use a UE with multiple SIMs. These embodiments are examples and do not limit the present disclosure, and the present disclosure may also be applied to other scenarios where the UE is connected to two networks at the same time.

[0047] In some implementations, in addition to some implementations or embodiments, or combinations of implementations or embodiments described in the present disclosure, the UE further includes: multiple universal subscriber identity modules (multi-USIMs) corresponding to the first subscription and the second subscription.

[0048] In some implementations, in addition to some implementations or embodiments, or a combination of implementations or embodiments described in the present disclosure, the first message also includes one of the following items: message one (Msg 1), message A (Msg A), message three (Msg 3), or message five (Msg 5).

[0049] In some implementations, in addition to some implementations or embodiments, or a combination of implementations or embodiments described in the present disclosure, method 400 may also include, before the UE sends a first message to the network: the UE is in an idle state with the network; and / or the UE is configured to establish a connection with the network.

[0050] In some implementations, in addition to some implementations or embodiments, or a combination of implementations or embodiments described in the present disclosure, the first message also includes one of the following items: a radio resource control (RRC) establishment request message, or an RRC establishment completion message.

[0051] In some implementations, in addition to some implementations or embodiments, or a combination of implementations or embodiments described in the present disclosure, method 400 may also include, before the UE sends a first message to the network: the UE is in an inactive state with the network; and / or the UE is configured to restore connection with the network.

[0052] In some implementations, in addition to some implementations or embodiments, or a combination of implementations or embodiments described in the present disclosure, the first message also includes one of the following items: a radio resource control (RRC) recovery request message, or an RRC recovery complete message.

[0053] In some implementations, in addition to some implementations or embodiments, or a combination of implementations or embodiments described in the present disclosure, the first indicator further includes: a field indicating the capability limitation of the UE on the network.

[0054] In some implementations, in addition to some implementations or embodiments, or combinations of implementations or embodiments described in the present disclosure, in response to sending a first message including a first indicator, the UE receives from the network a second message including a second indicator indicating a request for the UE to report UE capability limitations.

[0055] In some implementations, in addition to some implementations or embodiments, or a combination of implementations or embodiments described in the present disclosure, the second message includes: an RRC message or a media access control element (MAC CE); and / or an RRC message including a reconfiguration message.

[0056] In some implementations, in addition to some implementations or embodiments, or combinations of implementations or embodiments described in the present disclosure, in response to receiving the second message, the UE sends a third message including UE capability limitation information to the network.

[0057] In some implementations, in addition to some implementations or embodiments, or combinations of implementations or embodiments described in the present disclosure, in response to sending a third message including UE capability limitation information, the UE receives a fourth message from the network to reconfigure the UE.

[0058] In some implementations, in addition to some implementations or embodiments, or a combination of implementations or embodiments described in the present disclosure, the second indicator further includes: a field for requesting the UE to report capability limitations to the network.

[0059] In some implementations, in addition to some implementations or embodiments, or a combination of implementations or embodiments described in the present disclosure, method 400 may also include, before the UE sends a first message to the network: the UE receives system information broadcast by the network, the system information includes a third indicator indicating a network supported capability limitation indication.

[0060] In some implementations, in addition to some implementations or embodiments, or combinations of implementations or embodiments described in this disclosure, the system information also includes system information block one (SIB 1).

[0061] In some implementations, in addition to some implementations or embodiments, or a combination of implementations or embodiments described in the present disclosure, the third indicator also includes a field for indicating at least one of the following: whether the UE is allowed to send a capability limitation indication, and / or whether the network supports capability limitation reporting.

[0062] In some implementations, in addition to some implementations or embodiments, or a combination of implementations or embodiments described in the present disclosure, the first message also includes one of the following items: a radio resource control (RRC) recovery request message, an RRC recovery complete message, an RRC establishment request message, or an RRC establishment complete message.

[0063] In some implementations, in addition to some implementations or embodiments, or combinations of implementations or embodiments described in the present disclosure, in response to receiving a first message including an indicator, the network sends a second message including a second indicator to the UE, wherein the second indicator indicates a request for the UE to report UE capability limitations.

[0064] In some implementations, in addition to some implementations or embodiments, or combinations of implementations or embodiments described in the present disclosure, in response to sending the second message, the network receives a third message including UE capability limitation information from the UE.

[0065] In some implementations, in addition to some implementations or embodiments, or combinations of implementations or embodiments described in the present disclosure, in response to receiving the third message including the UE capability limitation information, the network sends a fourth message to reconfigure the UE.

[0066] In some implementations, in addition to some implementations or embodiments, or a combination of implementations or embodiments described in the present disclosure, method 500 may also include: the network receives a first message from the UE: the network broadcasts system information to the UE, the system information including a third indicator indicating a network supported capability limitation indication.

[0067] This disclosure describes various exemplary embodiments for coordinating user equipment (UE) capabilities for a dual standby state, which are provided as examples and do not impose any limitations on the present disclosure.

[0068] Various embodiments address at least the issue of how a UE indicates a temporary capability restriction during connection establishment. The UE may send an early indication indicating the presence of a temporary capability restriction before reconfiguring the UE. The UE may send an early indication in a message during connection establishment or connection recovery. For non-limiting examples, the message may include Msg 1, Msg A, Msg 3, or Msg 5. Msg 3 may include an RRC setup request message or an RRC recovery request message; and / or Msg 5 may include an RRC setup complete message or an RRC recovery complete message.

[0069] In some implementations, reference Figure 6 , the UE (680) may include an early indication indicating a temporary capability restriction in Msg 3 in step 602 (or step 602A) or Msg 5 in step 604 (or step 604A). The UE 680 may include a SIM1 access stratum (AS) 682 and a SIM2 AS 684, which are configured to connect to SIM1 e / gNB A 692 and SIM2 e / gNB B 694, respectively.

[0070] Referring to step 600: the UE may be in a connected state with network A (692), and the UE may be in an idle or inactive state with network B.

[0071] Referring to step 601: the UE may need to establish a connection with network B (when the UE is in an idle state with network B); or the UE may need to resume a connection with network B (when the UE is in an inactive state with network B).

[0072] When the UE is in an idle state with network B and needs to establish a connection with limited capabilities, steps 602, 603 and 604 may be performed.

[0073] Referring to step 602, the UE may send an RRC setup request message (or Msg 3) to the network B. Referring to step 603, in response to receiving the RRC setup request message, the network B may send an RRC setup message. Referring to step 604, in response to receiving the RRC setup message, the UE sends an RRC setup complete message (or Msg 5) to the network B. In some implementations, the RRC setup request message in step 602 may include a UE capability limitation indication. In some other implementations, the RRC setup complete message in step 604 may include a UE capability limitation indication.

[0074] When the UE is in an inactive state with network B and needs to resume a connection with limited capabilities, steps 602A, 603A, and 604A may be performed.

[0075] Referring to step 602A, the UE may send an RRC recovery request message (or Msg 3) to network B. Referring to step 603A, in response to receiving the RRC recovery request message, network B may send an RRC recovery message. Referring to step 604A, in response to receiving the RRC recovery message, the UE sends an RRC recovery complete message (or Msg 5) to network B. In some implementations, the RRC recovery request message in step 602A may include a UE capability limitation indication. In some other implementations, the RRC recovery complete message in step 604A may include a UE capability limitation indication.

[0076] In some implementations, Asn.1 encoding may be used for UE capability limitation indication. For non-limiting example, the Asn.1 encoding for UE capability limitation indication in the RRC setup complete message may be as follows:

[0077] CapRestrictIndication ENUMERATED{true}Optional CapRestrictIndication can be used to indicate that there is a temporary capability restriction on the UE side.

[0078] Various embodiments address at least the issue of how a network node behaves upon receiving a temporary capability limitation.Upon receiving an early indication that a temporary capability limitation exists, the network may request the UE to report temporary capabilities.

[0079] In some implementations, the network may request the UE to report the temporary capability restriction in an RRC message or MAC CE. For example, the RRC message may be a reconfiguration message.

[0080] In some implementations, once the UE receives the request, the UE may report the temporary capability limitation in UE Assistance Information (UAI).

[0081] In some implementations, once the network acquires a temporary capability limitation, the network may reconfigure the UE.

[0082] In some implementations, reference Figure 7 Referring to step 700 of the method, the UE may be in a connected state with network A, and the UE may be in an idle state with network B. Referring to step 701, when the UE is in an idle state with network B, the UE may need to establish a connection with network B. Referring to step 702, the UE may send an RRC setup request message to network B. Referring to step 703, in response to receiving the RRC setup request message, network B may send an RRC setup message. Referring to step 704, in response to receiving the RRC setup message, the UE sends an RRC setup complete message including a temporary capability restriction indication to network B. Referring to step 705, in response to receiving the temporary capability restriction indication from the UE, network B may send an RRC message (or MAC CE) including a reconfiguration (e.g., other configuration) to request a temporary capability restriction. Referring to step 706, in response to receiving a request for a temporary capability restriction from network B, the UE may send UE assistance information including a temporary capability restriction to network B. Referring to step 707, in response to receiving the temporary capability restriction from the UE, network B may reconfigure the UE by sending a reconfiguration message to the UE.

[0083] In some implementations, the Asn.1 encoding may be used for requests for capability restrictions (or restrictions). For non-limiting example, for a request for capability restrictions included in a reconfiguration (reconfiguration->other configuration), the Asn.1 encoding may be as follows:

[0084] CapRestrictRequestIndication ENUMERATED{true}Optional CapRestrictRequestIndication can be used to request the UE to report temporary capability restrictions.

[0085] Various embodiments at least address the issue of when the UE sends an early indication (i.e., a trigger condition for the UE). The UE needs to know whether network B supports early indication indicating the presence of a temporary capability restriction. The network may indicate in system information that the network supports temporary capability restriction reporting.

[0086] In some implementations, an indication may be included in SIB1 indicating whether the UE is allowed to send an early indication indicating the presence of a temporary capability limitation and / or indicating whether it supports temporary capability limitation reporting.

[0087] In some implementations, reference Figure 8 : In step 800, network B may broadcast system information indicating that network B supports temporary capability limitation indication. Steps 600, 601, 602, 603, and 604 (or 602A, 603A, and 604A) may be the same as described above in other embodiments. Step 800 may be performed in other orders relative to other steps: for example, step 800 may occur before step 600; for another example, step 800 may occur after step 600; for another example, step 800 may occur before step 601; and / or for another example, step 800 may occur after step 601.

[0088] In some implementations, Asn.1 encoding may be used to indicate whether the network supports temporary capability restriction reporting. For non-limiting examples, Asn.1 encoding may be as follows to indicate whether the network supports temporary capability restriction reporting in SIB1:

[0089] CapRestrictSupportIndication ENUMERATED{true}Optional

[0090] Among them, CapRestrictSupportIndication can indicate whether the UE is allowed to send an "early indication indicating the existence of temporary capability restriction", or indicate whether the network supports temporary capability restriction reporting.

[0091] Various embodiments describe some enhancements for UEs in an inactive state with limited capabilities. When the UE is in an inactive state, the UE may send an RRC recovery request to network B. Due to temporary capability limitations, for example, when the network is not aware of the temporary capability limitations, the connection may not be successfully recovered. For this situation, when early indication is required, the UE has to send an early indication in the recovery request message. However, due to the size limit of the recovery request message, it may not be desirable to use the remaining 1 spare bit for the MUSIM feature. Therefore, as an enhanced mechanism / solution, the UE can directly enter the idle state.

[0092] In some implementations, for situations where the UE may not be able to restore the connection, the UE may immediately enter the idle state; and / or when it is necessary, the UE may send the RRC establishment procedure after entering the idle state.

[0093] In some implementations, reference Fig. 9 Referring to step 900: the UE may be in a connected state with network A, and the UE may be in an inactive state with network B. Referring to step 901: the UE may need to connect to network B. Referring to step 902, the UE may determine that the UE needs to return to an idle state because the UE determines that the UE may not be able to resume connection with network B due to a temporary capability (restriction). Referring to step 903, the UE returns to an idle state. Referring to step 904, the UE may send an RRC setup request message to network B. Referring to step 905, in response to receiving the RRC setup request message, network B may send an RRC setup message. Referring to step 906, in response to receiving the RRC setup message, the UE sends an RRC setup complete message to network B. In some implementations, the RRC setup request message may include a temporary capability restriction (or indication). In some implementations, the RRC setup complete message may include a temporary capability restriction (or indication).

[0094] refer to Fig. 9 , step 902 may be optional and may not be necessary for some implementations, where the UE enters the idle state and it is not certain whether the UE needs to return to the idle state and / or it is not certain whether the UE may be unable to resume connection with network B due to temporary capabilities (limitations).

[0095] The present disclosure describes methods, apparatus, and computer-readable media for wireless communications. The present disclosure solves the problem of having coordinated user equipment (UE) capabilities for dual standby states. The methods, apparatus, and computer-readable media described in the present disclosure can facilitate the performance of wireless transmissions between user equipment and multiple network nodes, thereby improving efficiency and overall performance. The methods, apparatus, and computer-readable media described in the present disclosure can improve the overall efficiency of wireless communication systems.

[0096] References throughout this specification to features, advantages, or similar language do not imply that all features and advantages that can be achieved using the present solution should be or are included in any single embodiment thereof. Rather, language referring to features and advantages should be understood to mean that a particular feature, advantage, or characteristic described in association with an embodiment is included in at least one embodiment of the present solution. Thus, discussions of features and advantages, and similar language throughout this specification may, but do not necessarily, refer to the same embodiment.

[0097] Furthermore, the features, advantages, and characteristics described in 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: A first message including a first indicator is sent by a user equipment (UE) to a network, the first indicator indicating a UE capability limitation to the network.

2. The method according to claim 1, wherein: The UE includes multiple Universal Subscriber Identity Modules (Multi-USIMs) corresponding to a first subscription and a second subscription.

3. The method according to claim 1, wherein: The first message includes one of the following items: message one (Msg 1), message A (Msg A), message three (Msg 3), or message five (Msg 5).

4. The method according to claim 1, wherein before the UE sends the first message to the network: The UE is in an idle state with the network; and The UE is configured to establish a connection with the network.

5. The method according to claim 4, wherein: The first message includes one of the following: a radio resource control (RRC) setup request message, or a RRC setup complete message.

6. The method according to claim 1, wherein before the UE sends the first message to the network: The UE is in an inactive state with the network; and The UE is configured to resume connection with the network.

7. The method according to claim 6, wherein: The first message includes one of the following: a radio resource control (RRC) resumption request message, or an RRC resumption complete message.

8. The method according to any one of claims 1 to 6, wherein: The first indicator includes a field indicating the UE capability limitation for the network.

9. The method according to any one of claims 1 to 8, wherein: In response to sending the first message including the first indicator, the UE receives from the network a second message including a second indicator indicating a request for reporting the UE capability limitation for the UE.

10. The method according to claim 9, wherein: The second message comprises one of an RRC message or a medium access control element (MAC CE); and The RRC message includes a reconfiguration message.

11. The method according to claim 9, wherein: In response to receiving the second message, the UE sends a third message including the UE capability limitation information to the network.

12. The method according to claim 11, wherein: In response to sending the third message including the UE capability limitation information, the UE receives a fourth message from the network to reconfigure the UE.

13. The method according to any one of claims 9 to 12, wherein: The second indicator includes a field for requesting the UE to report capability limitation to the network.

14. The method according to claim 1, wherein before the UE sends the first message to the network: The UE receives system information broadcast by the network, where the system information includes: A third indicator indicating that the network supports capability limitation indication.

15. The method according to claim 14, wherein: The system information includes system information block 1 (SIB 1).

16. The method of claim 14, wherein: The third indicator includes a field for indicating at least one of the following: whether the UE is allowed to send a capability limitation indication, or Whether the network supports capability limitation reporting.

17. A method for wireless communication, comprising: A first message is received by a network from a user equipment (UE) including a first indicator indicating a UE capability limitation to the network.

18. The method of claim 17, wherein: The first message includes one of the following: a radio resource control (RRC) resumption request message, an RRC resumption complete message, an RRC establishment request message, or an RRC establishment complete message.

19. The method of claim 17, wherein: In response to receiving the first message including the indicator, the network sends a second message including a second indicator to the UE, the second indicator indicating a request for reporting the UE capability limitation for the UE.

20. The method of claim 19, wherein: In response to sending the second message, the network receives a third message including the UE capability limitation information from the UE.

21. The method of claim 20, wherein: In response to receiving the third message including the UE capability limitation information, the network sends a fourth message to reconfigure the UE.

22. The method according to any one of claims 17 to 21, wherein the network receives the first message from the UE: The network broadcasts system information to the UE, where the system information includes: A third indicator indicating that the network supports capability limitation indication.

23. A wireless communication device comprising a processor and a memory, wherein the processor is configured to read a code from the memory and implement the method according to any one of claims 1 to 22.

24. A computer program product comprising computer readable program medium code stored thereon, which, when executed by a processor, causes the processor to implement the method according to any one of claims 1 to 22.

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