Communication cycle for multiple USIM and dual connectivity operation

Abstract

Certain aspects of the present disclosure provide techniques for multi-Universal Subscriber Identity Module (USIM) and dual connectivity operation. A method performed by a user equipment (UE) comprises: establishing (605) a first access link associated with a first SIM of the UE for communicating with a first base station; establishing (610) a second access link associated with the first SIM of the UE for communicating with a second base station; establishing (615) a third access link associated with the second SIM of the UE; determining (620) a need for reduced capability on the second access link to communicate on the third access link; sending (625) an indication of the need for reduced capability to the second base station; and communicating (630) on the third access link using the second SIM while communicating on the second access link using the first SIM, wherein the communication on the second access link is performed with reduced capability.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to U.S. application No. 17 / 115,047, filed on December 8, 2020, which claims the benefit of and priority to U.S. Provisional Application No. 62 / 951,336, filed on December 20, 2019, both of which are hereby assigned to the present assignee and are hereby expressly incorporated herein by reference in their entirety as if fully set forth below and for all applicable purposes. Technical Field

[0003] Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for multiple Universal Subscriber Identity Modules (USIMs) and communication cycles for dual connectivity operations. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasts. These wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access systems include the Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) system, the LTE-Advanced (LTE-A) system, the Code Division Multiple Access (CDMA) system, the Time Division Multiple Access (TDMA) system, the Frequency Division Multiple Access (FDMA) system, the Orthogonal Frequency Division Multiple Access (OFDMA) system, the Single Carrier Frequency Division Multiple Access (SC-FDMA) system, and the Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, among others.

[0005] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at a city, country, regional, and even global level. New Radio (e.g., 5G NR) is an example of an emerging telecommunication standard. NR is a collection of enhancements to the LTE mobile standard promulgated by 3GPP. NR aims to better support mobile broadband internet access by increasing spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and better integrating with other open standards using OFDMA with cyclic prefix (CP) on the downlink (DL) and uplink (UL). To this end, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0006] However, as demand for mobile broadband access continues to increase, further improvements are needed in NR and LTE technologies. Preferably, these improvements should be applicable to other multi-access technologies and the telecommunication standards that adopt them. Summary of the Invention

[0007] The systems, methods, and devices of the present disclosure each have several aspects, no single one of which is solely responsible for its desirable attributes. Without limiting the scope of the disclosure as expressed by the claims that follow, some features will now be briefly discussed. After considering this discussion, and particularly after reading the section entitled "Detailed Description," one will understand how the features of the present disclosure provide advantages, including improved multi-Universal Subscriber Identity Module (USIM) and dual connectivity operation.

[0008] Certain aspects provide a method for wireless communication performed by a user equipment (UE). The method generally includes establishing a first access link associated with a first subscriber identity module (SIM) of the UE for communicating with a first base station; establishing a second access link associated with the first SIM of the UE for communicating with a second base station; establishing a third access link associated with the second SIM of the UE; identifying at least one time division multiplexing (TDM) pattern indicating a set of time periods for using the third access link; and tuning to the third access link to communicate using the second SIM during at least one time period of the set of time periods indicated in the TDM pattern.

[0009] Certain aspects provide an apparatus for wireless communication by a user equipment. The apparatus generally includes at least one processor configured to: establish a first access link associated with a first subscriber identity module (SIM) of the UE for communication with a first base station; establish a second access link associated with the first SIM of the UE for communication with a second base station; establish a third access link associated with the second SIM of the UE; identify at least one time division multiplexing (TDM) pattern indicating a set of time periods for using the third access link; and tune to the third access link to communicate using the second SIM during at least one time period of the set of time periods indicated in the TDM pattern. The apparatus generally also includes a memory coupled to the at least one processor.

[0010] Certain aspects provide an apparatus for wireless communications by a user equipment in a network. The apparatus generally includes: means for establishing a first access link associated with a first subscriber identity module (SIM) of the UE for communicating with a first base station; means for establishing a second access link associated with the first SIM of the UE for communicating with a second base station; means for establishing a third access link associated with the second SIM of the UE; means for identifying at least one time division multiplexing (TDM) pattern indicating a set of time periods for using the third access link; and means for tuning to the third access link to communicate using the second SIM during at least one time period of the set of time periods indicated in the TDM pattern.

[0011] Certain aspects provide a non-transitory computer-readable medium for wireless communications by a user equipment in a network. The non-transitory computer-readable medium generally includes instructions that, when executed by at least one processor, cause the at least one processor to: establish a first access link associated with a first subscriber identity module (SIM) of the UE for communication with a first base station; establish a second access link associated with the first SIM of the UE for communication with a second base station; establish a third access link associated with the second SIM of the UE; identify at least one time division multiplexing (TDM) pattern indicating a set of time periods for using the third access link; and tune to the third access link to communicate using the second SIM during at least one time period of the set of time periods indicated in the TDM pattern.

[0012] Certain aspects provide a method for wireless communications by a base station (BS). The method generally includes establishing a first access link for communicating with a user equipment (UE); identifying at least one time division multiplexing (TDM) pattern indicating a set of time periods for the UE to tune to a second access link for communicating with a second base station; and during at least one time period of the set of time periods, one of: reducing or ceasing transmission to the UE on the first access link.

[0013] Certain aspects provide an apparatus for wireless communications by a base station (BS). The apparatus generally includes at least one processor configured to: establish a first access link for communicating with a user equipment (UE); identify at least one time division multiplexing (TDM) pattern indicating a set of time periods for the UE to tune to a second access link for communicating with a second base station; and, during at least one time period in the set of time periods, one of: reduce or cease transmission to the UE on the first access link. The apparatus generally also includes a memory coupled to the at least one processor.

[0014] Certain aspects provide an apparatus for wireless communications by a base station (BS). The apparatus generally includes: means for establishing a first access link for communicating with a user equipment (UE); means for identifying at least one time division multiplexing (TDM) pattern indicating a set of time periods for the UE to tune to a second access link for communicating with a second base station; and means for, during at least one time period of the set of time periods, one of: reducing or ceasing transmissions to the UE on the first access link.

[0015] Certain aspects provide a non-transitory computer-readable medium for wireless communications by a base station (BS). The non-transitory computer-readable medium generally includes instructions that, when executed by at least one processor, cause the at least one processor to: establish a first access link for communicating with a user equipment; identify at least one time division multiplexing (TDM) pattern indicating a set of time periods for the UE to tune to a second access link for communicating with a second base station; and, during at least one time period in the set of time periods, one of: reduce or stop transmissions to the UE on the first access link.

[0016] Certain aspects provide a method for wireless communication performed by a user equipment (UE). The method generally includes: establishing a first access link associated with a first subscriber identity module (SIM) of the UE for communicating with a first base station; establishing a second access link associated with the first SIM of the UE for communicating with a second base station; establishing a third access link associated with the second SIM of the UE; determining a need for reduced capability on the second access link to communicate on the third access link; sending an indication of the need for reduced capability to the second base station; and communicating on the third access link using the second SIM while communicating on the second access link using the first SIM, wherein communication on the second access link occurs at the reduced capability.

[0017] Certain aspects provide an apparatus for wireless communication by a user equipment. The apparatus generally includes at least one processor configured to: establish a first access link associated with a first subscriber identity module (SIM) of the UE for communication with a first base station; establish a second access link associated with the first SIM of the UE for communication with a second base station; establish a third access link associated with the second SIM of the UE; determine a need for reduced capacity on the second access link to communicate on the third access link; send an indication of the need for reduced capacity to the second base station; and communicate on the third access link using the second SIM while communicating on the second access link using the first SIM, wherein communication on the second access link is performed at reduced capacity. The apparatus generally also includes a memory coupled to the at least one processor.

[0018] Certain aspects provide an apparatus for wireless communications by a user equipment in a network. The apparatus generally includes: means for establishing a first access link associated with a first subscriber identity module (SIM) of the UE for communicating with a first base station; means for establishing a second access link associated with the first SIM of the UE for communicating with a second base station; means for establishing a third access link associated with the second SIM of the UE; means for determining a need for reduced capability on the second access link to communicate on the third access link; means for sending an indication of the need for reduced capability to the second base station; and means for communicating on the third access link using the second SIM while communicating on the second access link using the first SIM, wherein communications on the second access link are conducted at the reduced capability.

[0019] Certain aspects provide a non-transitory computer-readable medium for wireless communications by a user equipment in a network. The non-transitory computer-readable medium generally includes instructions that, when executed by at least one processor, cause the at least one processor to: establish a first access link associated with a first subscriber identity module (SIM) of the UE for communicating with a first base station; establish a second access link associated with the first SIM of the UE for communicating with a second base station; establish a third access link associated with the second SIM of the UE; determine a need for reduced capability on the second access link to communicate on the third access link; send an indication of the need for reduced capability to the second base station; and communicate on the third access link using the second SIM while communicating on the second access link using the first SIM, wherein communication on the second access link is performed at the reduced capability.

[0020] Certain aspects provide a method for wireless communications by a base station (BS). The method generally includes establishing a first access link for communicating with a user equipment (UE); receiving an indication from the UE of a need for reduced capability on the first access link; and, in response to the indication of the need for reduced capability, reducing the number of transmissions to the UE on the first access link.

[0021] Certain aspects provide an apparatus for wireless communications by a base station (BS). The apparatus generally includes at least one processor configured to: establish a first access link for communicating with a user equipment (UE); receive an indication from the UE of a need for reduced capacity on the first access link; and, in response to the indication of the need for reduced capacity, reduce a number of transmissions to the UE on the first access link. The apparatus generally also includes a memory coupled to the at least one processor.

[0022] Certain aspects provide an apparatus for wireless communications by a base station (BS). The apparatus generally includes: means for establishing a first access link for communicating with a user equipment (UE); means for receiving, from the UE, an indication of a need for reduced capability on the first access link; and means for reducing a number of transmissions to the UE on the first access link in response to the indication of the need for reduced capability.

[0023] Certain aspects provide a non-transitory computer-readable medium for wireless communications by a base station (BS). The non-transitory computer-readable medium generally includes instructions that, when executed by at least one processor, cause the at least one processor to: establish a first access link for communicating with a user equipment (UE); receive an indication from the UE of a need for reduced capacity on the first access link; and, in response to the indication of the need for reduced capacity, reduce the number of transmissions to the UE on the first access link.

[0024] To accomplish the foregoing and related ends, one or more aspects comprise the features fully described and particularly pointed out in the following claims. The following description and accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features are indicative of but a few of the various ways in which the principles of the various aspects may be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order that the above-mentioned features of the present disclosure may be understood in detail, a more particular description briefly summarized above may be made by reference to various aspects, some of which are illustrated in the accompanying drawings. It should be noted, however, that the accompanying drawings illustrate only some typical aspects of the present disclosure and are therefore not to be considered limiting of its scope, as the description may admit to other equally effective aspects.

[0026] Figure 1 is a block diagram conceptually illustrating an example telecommunications system in accordance with certain aspects of the present disclosure.

[0027] Figure 2 is a block diagram conceptually illustrating designs of example base stations (BSs) and user equipment (UEs), in accordance with certain aspects of the present disclosure.

[0028] Figure 3 is a flow diagram illustrating example operations for wireless communications by a user equipment (UE), in accordance with certain aspects of the present disclosure.

[0029] Figure 4 is a flow diagram illustrating example operations for wireless communications by a base station (BS), in accordance with certain aspects of the present disclosure.

[0030] Figure 5 An example call flow for configuring and communicating using a TDM pattern is shown, in accordance with certain aspects of the present disclosure.

[0031] Figure 6 is a flow diagram illustrating example operations for wireless communications by a user equipment (UE), in accordance with certain aspects of the present disclosure.

[0032] Figure 7 is a flow diagram illustrating example operations for wireless communications by a base station (BS), in accordance with certain aspects of the present disclosure.

[0033] Figure 8 A communications device is shown that may include various components configured according to aspects of the present disclosure to perform operations for the techniques disclosed herein.

[0034] Figure 9 A communications device is shown that may include various components configured according to aspects of the present disclosure to perform operations for the techniques disclosed herein.

[0035] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements that are common to the figures. It is contemplated that elements disclosed in one aspect may be beneficially utilized on other aspects without specific recitation. DETAILED DESCRIPTION

[0036] Aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for multi-Universal Subscriber Identity Module (USIM) and dual connectivity operations. For example, in some cases, a UE may have a first access link established with a first base station, a second access link established with a second base station, and a third access link established with a third base station. Therefore, the techniques proposed herein involve tuning from the second access link to the third access link according to a TDM pattern that indicates a set of time periods for using the third access link. According to various aspects, these techniques may be transparent to the first base station on the first access link.

[0037] As described above, the following description provides examples of multi-USIM and dual-connection operations and does not limit the scope, applicability or examples set forth in the claims. The functions and arrangements of the elements discussed may be changed without departing from the scope of this disclosure. Various examples may omit, replace or add various processes or components as needed. For example, the methods described may be performed in an order different from that described, and various steps may be added, omitted or combined. In addition, the features described with respect to some examples may be combined in some other examples. For example, any number of aspects described herein may be used to implement a device or practice a method. In addition, the scope of this disclosure is intended to cover devices and methods that are practiced using other structures, functions, or structures and functions in addition to the various aspects disclosed herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims. The word "exemplary" is used herein to mean "used as an example, instance or illustration." Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other aspects.

[0038] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific radio access technology (RAT) and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, subcarrier, frequency channel tone, subband, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, 5G NR RAT networks can be deployed.

[0039] Figure 1 An example wireless communication network 100 is shown in which aspects of the present disclosure may be performed. For example, the wireless communication network 100 may be a NR system (e.g., a 5G NR network).

[0040] like Figure 1 As shown, the wireless communication network 100 may include a plurality of base stations (BSs) 110a-z (each base station also individually referred to herein as BS 110, or collectively referred to herein as BS 110) and other network entities. BS 110 may provide communication coverage for a particular geographic area (sometimes referred to as a "cell"), which may be fixed or may move based on the location of mobile BS 110. In some examples, BS 110 may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces (e.g., direct physical connections, wireless connections, virtual networks, etc.) using any suitable transport network. Figure 1In the illustrated example, BSs 110a, 110b, and 110c may be macro BSs for macro cells 102a, 102b, and 102c, respectively. BS 110x may be a pico BS for pico cell 102x. BSs 110y and 110z may be femto BSs for femto cells 102y and 102z, respectively. A BS may support one or more cells. BS 110 communicates with user equipment (UEs) 120a-y (each UE also referred to herein individually or collectively as UEs 120) in wireless communication network 100. UEs 120 (e.g., 120x, 120y, etc.) may be dispersed throughout wireless communication network 100, and each UE 120 may be stationary or mobile.

[0041] As described herein, according to certain aspects, BS 110 and UE 120 may be configured for multi-Universal Subscriber Identity Module (USIM) and dual connectivity operations. Figure 1 As shown, BS 110a includes a dual connectivity module 112. According to aspects of the present disclosure, the dual connectivity module 112 may be configured to perform Figure 4 、 Figure 5 and Figure 7 One or more of the operations shown in , and other operations disclosed herein for multiple USIM and dual connectivity operations. Additionally, as Figure 1 As shown, UE 120a includes a dual connectivity module 122. According to aspects of the present disclosure, the dual connectivity module 122 may be configured to perform Figure 3 、 Figure 5 and Figure 6 One or more of the operations shown in , and other operations disclosed herein for multiple USIM and dual connectivity operations.

[0042] The wireless communication network 100 may also include a relay station (e.g., relay station 110r), also known as a relay, etc., which receives transmissions of data and / or other information from an upstream station (e.g., BS 110a or UE 120r) and sends transmissions of data and / or other information to a downstream station (e.g., UE 120 or BS 110), or relays transmissions between UEs 120 to facilitate communication between devices.

[0043] A network controller 130 may couple to a set of BSs 110 and may provide coordination and control for these BSs 110. Network controller 130 may communicate with BSs 110 via a backhaul. BSs 110 may also communicate with each other (eg, directly or indirectly) via a wireless or wired backhaul.

[0044] Figure 2 BS 110a and UE 120a are shown (e.g., Figure 1Example components of the wireless communication network 100 of FIG. 1 , which may be used to implement aspects of the present disclosure.

[0045] At BS 110a, a transmit processor 220 may receive data from a data source 212 and control information from a controller / processor 240. The control information may be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), or the like. Data may be for a physical downlink shared channel (PDSCH), or the like. The processor 220 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively. The transmit processor 220 may also generate reference symbols (e.g., for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a cell-specific reference signal (CRS)). If applicable, a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, and / or reference symbols and may provide output symbol streams to modulators (MODs) in transceivers 232a-232t. Each modulator in transceivers 232a-232t can process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator can also process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The downlink signals from the modulators in transceivers 232a-232t can be transmitted via antennas 234a-234t, respectively.

[0046] At UE 120a, antennas 252a-252r can receive downlink signals from BS 110a and can provide received signals to demodulators (DEMODs) in transceivers 254a-254r, respectively. Each demodulator in transceivers 254a-254r can condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator can also process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 can obtain received symbols from all demodulators in transceivers 254a-254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 can process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 120a to a data sink 260, and provide decoded control information to a controller / processor 280.

[0047] On the uplink, at the UE 120a, a transmit processor 264 may receive and process data from a data source 262 (e.g., for a physical uplink shared channel (PUSCH)) and control information from the controller / processor 280 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 264 may also generate reference symbols for reference signals, such as a sounding reference signal (SRS). The symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266 (if applicable), further processed by the demodulators in the transceivers 254a-254r (e.g., for SC-FDM, etc.), and transmitted to the BS 110a. At the base station 110, the uplink signal from the UE 120a may be received by an antenna 234, processed by a demodulator in transceivers 232a-232t, detected by a MIMO detector 236 (if applicable), and further processed by a receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to a controller / processor 240.

[0048] Memories 242 and 282 may store data and program codes for BS 110 and UE 120a, respectively. A scheduler 244 may schedule UEs for data transmission on the downlink and / or uplink.

[0049] The controller / processor 280 and / or other processors and modules at the BS 110 and / or UE 120a may perform or direct the execution of processes for the techniques described herein. Figure 2 As shown in FIG, the controller / processor 240 of BS 110a includes a dual connectivity module 241, which may be configured to perform Figure 4 、 Figure 5 and Figure 7 According to aspects described herein, as Figure 2 As shown in FIG, the controller / processor 280 of the UE 120a includes a dual connectivity module 281, which may be configured to perform Figure 3 、 Figure 5 and Figure 6 The operations described herein may include one or more of the operations shown in FIG. 1 , as well as other operations disclosed herein for multiple USIM and dual connectivity operations. Although shown at the controller / processor, other components of the UE 120a and BS 110a may be used to perform the operations described herein.

[0050] Example communication cycle for multiple USIM and dual connectivity operation

[0051] In some cases, two different subscriptions can be supported on the same device, such as a user equipment (UE), and can be based on two separate subscriber identity modules (SIMs), referred to as multi-SIM (MSIM). These subscriptions can be on the same radio network or different radio networks and can have different subscription profiles and quality of service (QoS) requirements. In addition, different subscriptions can provide services on the same or different radio access technologies (RATs). Generally, an MSIM solution uses fewer resources when operating on two different RATs than two independent solutions, with the goal of optimizing the use of resources (RF, MIP, etc.) and providing an enhanced user experience.

[0052] In some cases, different categories of radio frequency (RF) solutions exist for MSIM devices. For example, in some cases, an MSIM device may include dual transceivers that provide dual receive and dual access (DSDA). In this case, for example, each subscription of the MSIM device may correspond to its own transceiver. In other cases, the MSIM device may include a single transceiver, where both subscriptions share the same radio resources / receive chain. Due to RF complexity, cost, and power consumption considerations, most traditional dual-subscription devices and solutions share a single transceiver and the same receive chain.

[0053] With the active global deployment of 5G New Radio (NR), MSIM solutions currently consist of a combination of 5G + 4G / 3G / 2G RAT. The Rel15 3GPP standard defines two 5G solutions: non-standalone (NSA) and standalone 5G (SA). In the standalone 5G NR architecture, both the signaling network and the radio can be handled by the 5G core network. In contrast, in a 5G NSA network, the Long Term Evolution (LTE) core network and LTE radio access can be used as the anchor for all signaling and mobility management while adding new 5G carriers. The NSA architecture is attractive for early deployments of 5G NR access systems because the network can reuse legacy operating LTE eNodeBs (eNBs) and evolved packet cores (EPCs). Non-standalone solutions are also attractive because they facilitate seamless migration from 4G to 5G networks that leverage the existing LTE core network.

[0054] Dual Connectivity (DC) has been introduced to allow the UE to connect to two different network points simultaneously to achieve higher throughput, reliability and mobility robustness. Evolved Universal Mobile Telecommunications Service Terrestrial Radio Access Network (EUTRAN)-NR Dual Connectivity (ENDC) is a form of dual connectivity using LTE and NR. In ENDC mode and for non-standalone implementations, the UE can be connected to an LTE eNB on a first access link and to an NR gNB on a second access link. In some cases, the LTE eNB can be used as the master node (MeNB) and the gNB can be used as the secondary node (SgNB). Both nodes can be connected to the Evolved Packet Core (EPC) in the user plane, but the master node can be directly connected to the EPC.

[0055] As described above, in some cases, a UE can communicate over multiple access links. For example, in some cases, the UE can communicate with a first base station (e.g., an LTE base station) over a first access link and with a second base station (e.g., a 5G base station) over a second access link. In some cases, the first access link and the second access link can be associated with a first SIM. Additionally, in some cases, the UE can communicate over a third access link associated with a second SIM.

[0056] However, in some cases, the UE may not be able to receive data and / or signaling simultaneously on multiple access links using both SIMs. For example, in dual connectivity (e.g., EN-DC), the UE's processing capabilities (e.g., due to a single receive chain) may prevent the UE from receiving on a first access link using a first SIM while concurrently receiving on a second access link using the first SIM or on a third access link using the second SIM. Similarly, concurrently receiving and / or transmitting on multiple access links and using multiple SIMs may cause interference.

[0057] Therefore, to address these issues, aspects of the present disclosure provide techniques for enabling configuration of one or more time division multiplexing (TDM) patterns that indicate a set of time periods for using one or more of a plurality of access links. For example, a UE may identify a TDM pattern for tuning from a second access link associated with a first SIM to a third access link associated with a second SIM, and may tune to the third access link to, for example, receive signaling and / or data on the third access link. In some cases, the techniques presented herein may be transparent to a first base station associated with a first access link (e.g., LTE) so as not to disrupt its operation. In addition, by introducing a TDM pattern for communicating on a third access link, the UE may reduce the likelihood of lost communications due to attempting to concurrently send and / or receive multiple data transmissions or control signals on multiple access links using multiple SIMs.

[0058] Figure 3 3 is a flow diagram illustrating example operations 300 for wireless communications in accordance with certain aspects of the present disclosure. For example, operations 300 may be performed by a UE (e.g., such as UE 120a in wireless communication network 100) for multiple Universal Subscriber Identity Module (USIM) and dual connectivity operations, as described herein. More specifically, operations 300 may be performed by a UE to communicate with a BS according to a TDM pattern, as described herein.

[0059] Operation 300 may be implemented as a process on one or more processors (e.g., Figure 2 In addition, the transmission and reception of signals by the UE in operation 300 may be performed by, for example, one or more antennas (e.g., Figure 2 In some aspects, the transmission and / or reception of signals by the UE may be implemented via a bus interface of one or more processors (e.g., controller / processor 280) that obtain and / or output signals.

[0060] Operations 300 begin, at 305, by establishing a first access link associated with a first subscriber identity module (SIM) of a UE for communicating with a first base station.

[0061] At 310, the UE establishes a second access link associated with the first SIM of the UE for communicating with a second base station.

[0062] At 315 , the UE establishes a third access link associated with the second SIM of the UE.

[0063] At 320, the UE identifies at least one time division multiplexing (TDM) pattern indicating a set of time periods in which a third access link is used.

[0064] At 325, the UE tunes to the third access link to communicate using the second SIM during at least one time period of the set of time periods indicated in the TDM pattern.

[0065] Figure 4 4 is a flow diagram illustrating example operations 400 for wireless communications in accordance with certain aspects of the present disclosure. For example, operations 400 may be performed by a base station (e.g., such as BS 110 in wireless communication network 100) for multiple USIM and dual connectivity operations as described herein. More specifically, operations 400 may be performed by a BS to communicate with a UE according to a TDM pattern as described herein.

[0066] In some cases, the base station may include a second base station of operation 300. Operation 400 may be implemented as a processor on one or more processors (e.g., Figure 2Furthermore, the transmission and reception of signals by the BS in operation 400 may be performed by, for example, one or more antennas (e.g., Figure 2 In some aspects, the transmission and / or reception of signals by the BS may be implemented via a bus interface of one or more processors (eg, controller / processor 240) that obtain and / or output signals.

[0067] Operation 400 begins with establishing a first access link for communicating with a user equipment at 405. In some cases, the first access link may correspond to the second access link established between the UE and the second base station in operation 300.

[0068] At 410, the BS identifies at least one time division multiplexing (TDM) pattern indicating a set of time periods for the UE to tune to the second access link to communicate with the second base station. In some cases, the second access link may correspond to the third access link established by the UE in operation 300.

[0069] At 415, the BS one of: reduces or stops transmission to the UE on the first access link during at least one time period of the set of time periods.

[0070] As described above, various aspects of the present disclosure provide techniques for enabling configuration of one or more time division multiplexing (TDM) patterns that indicate a set of time periods during which a UE may use one or more links in a plurality of access links. For example, in some cases, a UE may establish a first access link with a first base station and a second access link with a second base station. In some cases, the UE may use a first SIM card for communicating on the first access link and the second access link. However, in some cases, the UE may also establish a third access link associated with the UE's second SIM card for communicating with a third base station. In some cases, the third base station may include one of the first base station, the second base station, or a completely different base station. Additionally, in some cases, the first base station may include a primary node (e.g., LTE) and the second base station may include a secondary node (e.g., 5G).

[0071] Thus, when operating in dual connectivity mode, the UE can communicate with the first base station on the first access link and with the second base station on the second access link. In addition, in some cases, the UE also wishes to communicate with the third base station on the third access link. However, when the UE cannot use both the second access link and the third access link at the same time (for example, due to only one transceiver and one Rx chain), a "gap" can be created on at least one link (for example, the second access link) during which the UE can access another link (for example, the third access link). Therefore, the UE can identify and use a TDM pattern for communicating on the third access link using the second SIM. For example, the TDM pattern may indicate a set of time periods for communicating on the third access link using the second SIM. The set of time periods indicated in the TDM pattern may correspond to a time period when the second base station reduces or stops transmission on the second access link, thereby allowing the UE to tune to the third access link to receive signaling and / or data.

[0072] In some cases, when the UE is capable of using both the second access link and the third access link simultaneously (e.g., the UE has at least two Rx chains) but with reduced capabilities, the UE may notify at least one of the second base station or the third base station about this reduction (e.g., transmitting less on the corresponding access link). According to various aspects, if the UE cannot fully use its capabilities due to frequent handovers, the reduced UE capabilities may also be applied to the TDM pattern.

[0073] According to various aspects, in either case, the TDM pattern can be negotiated between the UE and the second base station, and can be transparent to the first base station, eg, so as not to disrupt operation of the first base station.

[0074] Figure 5 An example call flow for configuring and communicating using a TDM pattern is shown according to certain aspects presented herein. It should be understood that Figure 5 The order of the steps shown in the diagram is exemplary only, and the steps do not necessarily occur in the exact order shown. For example, in some cases, steps 1-3 described below may occur in a different order than the following. Figure 5 The order shown occurs.

[0075] like Figure 5As shown, at step 1, UE 120 establishes a first access link associated with a first SIM of UE 120 for communicating with a first base station 502. In some cases, the first base station 502 may include a master node (MN) and may be associated with a first radio access technology (RAT) such as LTE. At step 2, UE 120 establishes a second access link associated with the first SIM of UE 120 for communicating with a second base station 504. In some cases, the second base station 504 may include a secondary node (SN) and may be associated with a second RAT such as 5G.

[0076] In some cases, UE 120 may be able to communicate on both the first access link and the second access link (known as dual connectivity). Additionally, in some cases, UE 120 may include a second SIM and a third access link associated with the second SIM of UE 120 may be established, such as Figure 5 In some cases, UE 120 may use a third access link to communicate with a third base station 506 (or wireless node (WN)), which may be associated with a third RAT. In some cases, UE 120 may establish a third access link with the same base station as the first access link or the second access link, but using a second SIM.

[0077] exist Figure 5 At step 4 in FIG, UE 120 determines that a gap is required on the first SIM (e.g., USIM A) in order to communicate on the third access link using the second SIM (e.g., USIM B). Therefore, in response to determining that a gap is required on the first SIM in order to communicate on the third access link using the second SIM, UE 120 may identify at least one time division multiplexing (TDM) pattern that indicates a set of time periods for communicating on the third access link using the second SIM. In some cases, the at least one TDM pattern may be applied only to downlink transmissions, only to uplink transmissions, or to both uplink and downlink transmissions.

[0078] In some cases, identifying at least one TDM pattern may include requesting the TDM pattern from the second base station 504. For example, Figure 5As shown at step 5A in FIG, UE 120 may send signaling requesting a TDM pattern to the second base station 504. In some cases, requesting the TDM pattern may include sending an indication to the second base station 504 indicating that reduced capacity is required on the second access link. For example, in some cases, the indication of the need for reduced capacity on the second access link may request the second base station 504 to reduce transmission on the second access link during transmission on the third access link. In this case, the second access link may operate according to the reduced capacity during at least one time period of the set of time periods indicated in the TDM pattern. That is, the second base station 504 may reduce transmission on the second access link during at least one time period of the set of time periods indicated in the TDM pattern to facilitate communication of UE 120 on the third access link.

[0079] In addition, in some cases, such as Figure 5 As shown at step 5A in FIG, signaling the requesting TDM pattern to the second base station 504 may include signaling to the first base station 502 in a transparent container, which may be forwarded by the first base station 502 to the second base station 504. In other cases, for example, signaling the requesting TDM pattern to the second base station 504 may include directly signaling the requesting TDM pattern to the second base station 504 using a radio bearer (e.g., SRB3) established directly between the UE 120 and the second base station 504, as shown in FIG. Figure 5 In some cases, as shown in steps 5A and 5B, the signaling requesting the TDM pattern may include radio resource control (RRC) signaling. That is, UE 120 may send the signaling requesting the TDM pattern in an RRC message.

[0080] In either case, if Figure 5 As shown in step 6 of , UE 120 may receive an indication of at least one TDM pattern from second base station 504 that configures UE 120 to use the TDM pattern. Thus, in some cases, identifying the at least one TDM pattern may include identifying the at least one TDM pattern based on the indication of the at least one TDM pattern from second base station 504. According to various aspects, the indication of the at least one TDM pattern from second base station 504 may be sent to UE 120 directly in RRC signaling (e.g., using an SRB3 bearer) or indirectly (e.g., in a transparent container via first base station 502) to UE 120.

[0081] In some cases, the indication of the at least one TDM pattern from the second base station 504 may include an index value associated with the at least one TDM pattern, and identification of the at least one TDM pattern by the UE 120 is based on the index value. For example, in some cases, the UE 120 may be configured with multiple TDM patterns, each associated with a different index value. The UE 120 may use the index value received from the second base station 504 to determine the TDM pattern corresponding to the received index value.

[0082] In some cases, identifying at least one TDM pattern may include determining the TDM pattern at the UE 120 and sending an indication of the at least one TDM pattern to the second base station 504. Figure 5 The signaling requesting a TDM pattern sent at steps 5A and / or 5B of the present invention may include an indication of at least one TDM pattern determined by the UE 120. In some cases, the indication of at least one TDM pattern determined by the UE 120 may include an index value associated with the at least one TDM pattern. The second base station 504 may use the index value to determine the at least one TDM pattern. For example, as described above, in some cases, multiple TDM patterns may be configured, each pattern being associated with a different index value. The second base station 504 may use the index value received from the second base station 504 to determine the TDM pattern corresponding to the received index value. In some cases, the UE 120 may send an indication of the at least one TDM pattern in RRC signaling to the second base station 504 directly (e.g., using an SRB3 bearer) or to the UE 120 indirectly (e.g., in a transparent container via the first base station 502).

[0083] According to various aspects, Figure 5 In step 5A and / or step 5B of FIG, UE 120 determines an indication of at least one TDM pattern and sends it to the second base station 504, UE 120 may receive a confirmation confirming the at least one TDM pattern from the second base station 504. Figure 5 As shown at step 6 in FIG, upon receiving an indication of at least one TDM pattern from UE 120, second base station 504 may send a confirmation message to UE 120 to confirm and configure UE 120 with the at least one TDM pattern. As described above, UE 120 may receive the confirmation message directly from second base station 504 (e.g., using an SRB3 bearer) or indirectly (e.g., in a transparent container) from first base station 502. In some cases, the confirmation message may indicate an index value associated with the at least one TDM pattern.

[0084] According to various aspects, Figure 5At step 7 of , the UE 120 may receive signaling from the second base station 504 to activate at least one TDM pattern. According to various aspects, in some cases, the signaling from the second base station 504 to activate at least one TDM pattern may indicate to the UE 120 to start using the at least one TDM pattern when communicating on the second access link and the third access link. In some cases, the signaling to activate the at least one TDM pattern (e.g., indicating to the UE 120 to start using the at least one TDM pattern) may be received in at least one of medium access control (MAC) layer signaling or physical (PHY) layer signaling. In some cases, the MAC signaling includes a MAC control element (MAC-CE) and the PHY layer signaling includes downlink control information (DCI). In some cases, the MAC layer signaling or the PHY layer signaling may include an index value associated with the at least one TDM pattern. Additionally, in some cases, the UE 120 may start using the at least one TDM pattern immediately after receiving the signaling indicating the start / activation of the at least one TDM pattern. In other cases, the UE 120 may start using the at least one TDM pattern after the UE 120 processes the RRC signaling (in Figure 5 6 in the process of configuring / confirming the UE 120 with the at least one TDM pattern) immediately after starting to use the at least one TDM pattern.

[0085] According to various aspects, in some cases, Figure 5 The signaling received from the second base station 504 at step 7 in step 504 may include an indication of changing at least one TDM pattern (e.g., already configured in the UE). For example, in this case, the indication of changing at least one TDM pattern may include an indication of a new TDM pattern to be used.

[0086] According to various aspects, Figure 5At step 8 of , UE 120 may tune to the third access link and, for example, communicate with the third base station 506 on the third access link using the second SIM (e.g., USIM B) during at least one time period of the set of time periods indicated in the TDM pattern. For example, in some cases, during at least one time period of the set of time periods indicated in the TDM pattern, UE 120 may send or receive signaling and / or data on the third access link. According to various aspects, when UE 120 communicates on the third access link during at least one time period of the set of time periods indicated in the TDM pattern, the second base station 504 may reduce or stop transmissions to UE 120 on the second access link. In some cases, during the set of time periods indicated in the TDM pattern, UE 120 may use the first access link for uplink transmissions to the first base station 502. Thereafter, outside of the set of time periods indicated in the TDM pattern, UE 120 may autonomously switch to normal operation, such as receiving downlink transmissions on the first access link or sending uplink transmissions to the first base station.

[0087] In some cases, UE 120 may transmit uplink signaling and data only on the first access link during at least one time period of the set of time periods indicated in the TDM pattern. According to various aspects, this may be the case when UE 120 is unable to use both links for uplink split bearer during at least one time period of the set of time periods indicated in the TDM pattern. In some cases, this may require specification changes to allow for this "autonomous" UE 120 behavior, as the first base station may not be aware of the at least one TDM pattern.

[0088] According to various aspects, as described above, the third base station 506 can include the first base station 502, the second base station 504, or a WN / base station different from the first base station 502 and the second base station 504. Thus, in some cases, during at least one time period of the set of time periods indicated in the at least one TDM pattern, tuning to the third access link to communicate using the second SIM can include one of: communicating with the first base station 502 on the third access link using the second SIM, communicating with the second base station 504 on the third access link using the second SIM, or communicating with a third base station 506 on the third access link using the second SIM, the third base station 506 being different from the first base station 502 and the second base station 504.

[0089] exist Figure 5At step 9 of , UE 120 may send a request to stop using the at least one TDM pattern to the second base station 504 based on one or more criteria. For example, in some cases, the one or more criteria may include the start of a voice call at UE 120. In some cases, the request to stop the at least one TDM pattern may be sent directly to the second base station (e.g., using an SRB3 bearer) or indirectly to the second base station 504 (e.g., in a transparent container via the first base station 502). In some cases, UE 120 may send the request to stop the at least one TDM pattern in a MAC-CE.

[0090] In some cases, Figure 5 The request sent at step 9 of may include a request to change at least one TDM pattern. In this case, sending the request to change at least one TDM pattern by UE 120 may include sending an explicit indication of the request to change at least one TDM pattern in radio resource control (RRC) signaling. Alternatively, in other cases, sending the request to change at least one TDM pattern by UE 120 may include sending an implicit indication of the request to change at least one TDM pattern in medium access control (MAC) signaling. In some cases, the implicit indication may indicate an index value associated with the at least one TDM pattern.

[0091] exist Figure 5 At step 10, UE 120 may receive an indication from second base station 504 to stop using at least one TDM pattern. In some cases, the indication from second base station 504 may include a confirmation in response to Figure 5 9 of step 120. In other cases, the indication from the second base station 504 to stop using the at least one TDM pattern may be sent by the second base station 504, for example, autonomously, without a request from the UE 120. In some cases, the indication from the second base station 504 to stop using the at least one TDM pattern may be based on one or more criteria, such as the second base station 504 detecting the start of a voice call at the UE 120. According to various aspects, in some cases, the indication to stop using the at least one TDM pattern may be received from the second base station 504 in at least one of medium access control (MAC) layer signaling or physical (PHY) layer signaling and may include an index value associated with the at least one TDM pattern. In some cases, the indication from the second base station 504 to stop using the at least one TDM pattern may be received from the first base station 502 in a transparent container (e.g., forwarded from the second base station 504), or may be received directly from the second base station 504 (e.g., via SRB3).

[0092] exist Figure 5At step 11, after receiving the indication to stop using at least one TDM pattern, UE 120 may return to communicating using only the first SIM and may terminate communicating with the third base station 506 on the third access link (eg, using the second SIM).

[0093] In some cases, the at least one TDM pattern may be periodic, aperiodic, or semi-persistent. For example, when the at least one TDM pattern is periodic, the UE 120 may periodically receive paging or system information on the third access link during the set of time periods indicated in the at least one TDM pattern. In other words, the set of time periods indicated in the at least one TDM pattern may occur periodically. Additionally, in some cases, when the at least one TDM pattern is periodic, the UE 120 may periodically send a Tracking Area Update (TAU) or a Radio Access Network Notification Area Update (RNAU) during the set of time periods indicated in the at least one TDM pattern.

[0094] According to certain aspects, when the at least one TDM pattern is aperiodic, the UE 120 may be configured to communicate only once during the set of time periods indicated in the at least one TDM pattern and may not repeat the at least one TDM pattern after completion of the at least one TDM pattern. According to various aspects, when the at least one TDM pattern is aperiodic, the UE 120 may send at least one of a Tracking Area Update (TAU) or a Radio Access Network Notification Area Update (RNAU) during the set of time periods indicated in the at least one TDM pattern due to a mobility decision at the UE 120 (e.g., handover, etc.).

[0095] According to certain aspects, when the at least one TDM pattern is semi-persistently configured, the UE 120 may be configured with instructions regarding when to use the at least one TDM pattern to communicate with the third base station 506 on the third access link using the second SIM, and how long to use the at least one TDM pattern to communicate with the third base station 506 on the third access link using the second SIM.

[0096] In some cases, a change in the second base station 504 may occur, wherein the UE 120 may be handed over to (or may autonomously select) a different second base station 504 to communicate on the second link using the first SIM. In this case, if a TDM pattern is configured at the second base station 504 and the UE 120, the TDM pattern may be released or maintained during the change of the second base station 504. For example, when the UE 120 changes the second base station 504, in some cases, the old second base station may notify the new second base station of the TDM pattern configured at the UE 120. In some cases, the old second base station may send an indication of the TDM pattern to the new second base station via the first base station 502 in a transparent container of an RRC message (e.g., the first base station 502 forwards the indication of the TDM pattern to the new second base station). According to various aspects, upon receiving the indication of the TDM pattern, the new second base station may decide to release, change, or maintain the TDM pattern with the UE 120.

[0097] As described above, in certain situations, when UE 120 is able to simultaneously communicate on the second access link using the first SIM and on the third access link using the second SIM, UE 120 may determine a need for reduced capacity on the second access link. In certain situations, this determination may be based on UE 120's ability to simultaneously support communications on both the second and third access links. Thereafter, UE 120 may send an indication of the need for reduced capacity on the second access link to second base station 504. For example, the indication of the need for reduced capacity on the second access link may indicate to second base station 504 that the amount of transmissions from second base station 504 to UE 120 on the second access link should be reduced. By reducing the amount of transmissions from second base station 504 to UE 120 on the second access link, UE 120 may have sufficient resources to simultaneously receive transmissions on the third access link (e.g., using the second SIM). Therefore, after sending the indication of the need for reduced capacity on the second access link, UE 120 may communicate on the third access link using the second SIM while simultaneously communicating on the second access link using the first SIM. As described above, communications on the second access link may be performed based on or at the reduced capacity.

[0098] In some cases, sending the indication of the need for reduced capability to the second base station 504 includes sending the indication directly to the second base station 504. For example, in some cases, the UE 120 may send the indication using a signaling radio bearer established directly between the UE 120 and the second base station 504. In some cases, the signaling bearer may include an SRB3 bearer.

[0099] In other cases, sending the indication of the need for reduced capability to the second base station 504 may include sending the indication to the second base station 504 indirectly via the first base station 502. For example, in this case, the UE 120 may send the indication to the first base station 502 in a transparent container to be forwarded to the second base station 504.

[0100] Figure 6 6 is a flow diagram illustrating example operations 600 for wireless communications in accordance with certain aspects of the present disclosure. For example, operations 600 may be performed by a UE (e.g., such as UE 120a in wireless communication network 100) for multiple Universal Subscriber Identity Module (USIM) and dual connectivity operations, as described herein. More specifically, operations 600 may be performed by a UE to communicate with a BS at a reduced capacity, as described herein.

[0101] Operation 600 may be implemented as a process on one or more processors (e.g., Figure 2 In addition, the transmission and reception of signals by the UE in operation 300 may be performed by, for example, one or more antennas (e.g., Figure 2 In some aspects, the transmission and / or reception of signals by the UE may be implemented via a bus interface of one or more processors (e.g., controller / processor 280) that obtain and / or output signals.

[0102] Operations 600 begin, at 605, by establishing a first access link associated with a first subscriber identity module (SIM) of a UE for communicating with a first base station.

[0103] At 610, the UE establishes a second access link associated with the first SIM of the UE for communicating with a second base station.

[0104] At 615 , the UE establishes a third access link associated with the second SIM of the UE.

[0105] At 620, the UE determines a need for reduced capacity on the second access link to communicate on the third access link.

[0106] At 625, the UE sends an indication of the need for reduced capability to the second base station.

[0107] At 630, the UE communicates on the third access link using the second SIM while simultaneously communicating on the second access link using the first SIM, wherein the communication on the second access link occurs at a reduced capacity.

[0108] Figure 77 is a flow diagram illustrating example operations 700 for wireless communications in accordance with certain aspects of the present disclosure. For example, operations 700 may be performed by a base station (e.g., such as BS 110 in wireless communication network 100) for multiple USIM and dual connectivity operations as described herein. More specifically, operations 700 may be performed by a BS to communicate with a UE at a reduced capacity as described herein.

[0109] In some cases, the base station may include a second base station of operations 700. Operations 700 may be implemented as a process on one or more processors (e.g., Figure 2 Furthermore, the transmission and reception of signals by the BS in operation 400 may be performed by, for example, one or more antennas (e.g., Figure 2 In some aspects, the transmission and / or reception of signals by the BS may be implemented via a bus interface of one or more processors (eg, controller / processor 240) that obtain and / or output signals.

[0110] Operation 700 begins with establishing a first access link for communicating with a user equipment at 705. In some cases, the first access link may correspond to the second access link established between the UE and the second base station in operation 300.

[0111] At 710, the BS receives an indication of a need for reduced capabilities on a first access link from a UE.

[0112] At 715, the BS reduces the number of transmissions to the UE on the first access link in response to the indication of the need for reduced capability.

[0113] Figure 8 The diagram shows that a method may include operations configured to perform the techniques disclosed herein (such as Figure 3 、 Figure 5 and Figure 6 8 and 9. The communication device 800 includes various components (e.g., corresponding to means plus functional components) that include the operations illustrated in

[0065] and other operations disclosed herein for multiple USIM and dual connectivity operations. The communication device 800 includes a processing system 802 coupled to a transceiver 808. The transceiver 808 is configured to transmit and receive signals for the communication device 800, such as the various signals described herein, via an antenna 810. The processing system 802 can be configured to perform processing functions for the communication device 800, including processing signals received and / or to be transmitted by the communication device 800.

[0114] The processing system 802 includes a processor 804 coupled to a computer-readable medium / memory 812 via a bus 806. In some aspects, the computer-readable medium / memory 812 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 804, cause the processor 804 to perform Figure 3 、 Figure 5 and Figure 6 The operations shown and other operations of the various techniques discussed herein for multiple USIM and dual connectivity operations. In some aspects, the computer readable medium / memory 612 stores a computer program for executing Figure 3 、 Figure 5 and Figure 6 For example, the computer readable medium / memory 812 stores code for establishing 814, code for identifying 816, code for tuning 818, code for sending 820, code for determining 822, code for communicating 824, and code for receiving 826.

[0115] In some cases, the code for establishing 814 may include code for establishing a first access link associated with a first subscriber identity module (SIM) of the UE for communicating with the first base station.

[0116] Additionally, in some cases, the code for establishing 814 may include code for establishing a second access link associated with the first SIM of the UE for communicating with a second base station.

[0117] Additionally, in some cases, the code for establishing 814 may include code for establishing a third access link associated with a second SIM of the UE.

[0118] In some cases, code for identifying 816 may include code for identifying at least one time division multiplexing (TDM) pattern indicating a set of time periods for use of the third access link.

[0119] In some cases, the code for tuning 818 may include code for tuning to a third access link to communicate using the second SIM during at least one time period of the set of time periods indicated in the TDM pattern.

[0120] In some cases, the code for transmitting 820 may include code for transmitting an indication of at least one TDM pattern to the second base station. In some cases, the code for transmitting 820 may include code for transmitting the indication of at least one TDM pattern directly to the second base station. In some cases, the code for transmitting 820 may include code for transmitting the indication of at least one TDM pattern to the second base station via the first base station. In some cases, the code for transmitting 820 may include code for transmitting the indication of at least one TDM pattern to the first base station using a transparent container.

[0121] In some cases, code for receiving 826 may include code for receiving an acknowledgment from the second base station acknowledging the at least one TDM pattern.

[0122] In some cases, code for transmitting 820 may include code for transmitting an index value associated with at least one TDM pattern.

[0123] In some cases, code for receiving 826 may include code for receiving an indication of at least one TDM pattern from a second base station.

[0124] In some cases, code for identifying 816 may include code for identifying at least one TDM pattern based on an index value.

[0125] In some cases, code for receiving 826 may include code for receiving signaling indicating the start of at least one TDM pattern.

[0126] In some cases, code for sending 820 may include code for sending a request to the second base station to stop at least one TDM pattern based on one or more criteria.

[0127] In some cases, code for receiving 826 may include code for receiving an indication to stop at least one TDM pattern from the second base station.

[0128] In some cases, code for sending 820 may include code for sending a request to the second base station to change at least one TDM pattern.

[0129] In some cases, the code for sending 820 may include code for sending an explicit indication in radio resource control (RRC) signaling requesting a change to the at least one TDM pattern.

[0130] In some cases, code for sending 820 may include code for sending an implicit indication in medium access control (MAC) signaling requesting a change in at least one TDM pattern.

[0131] In some cases, code for receiving 826 may include code for periodically receiving paging or system information on the third access link during a set of time periods indicated in the at least one TDM pattern.

[0132] In some cases, code for sending 820 may include code for periodically sending a Tracking Area Update (TAU) or a Radio Access Network Notification Area Update (RNAU) during a set of time periods indicated in the at least one TDM pattern.

[0133] In some cases, the code for sending 820 may include code for sending at least one of a tracking area update (TAU) or a radio access network notification area update (RNAU) during a set of time periods indicated in at least one TDM pattern due to a mobility decision.

[0134] In some cases, code 820 for transmitting may include code for transmitting an uplink transmission using the first access link during at least one time period of the set of time periods indicated in the at least one TDM pattern.

[0135] In some cases, code for communicating 824 may include code for communicating with the first base station over a third access link using the second SIM.

[0136] In some cases, code for communicating 824 may include code for communicating with the second base station over a third access link using the second SIM.

[0137] In some cases, code for communicating 824 may include code for communicating with a third base station over a third access link using the second SIM.

[0138] In some cases, code for sending 820 may include code for sending an indication of a reduced capability of the second access link to the second base station.

[0139] In some cases, code 820 for transmitting may include code for transmitting uplink signaling and data only on the first access link during at least one time period of the set of time periods indicated in the TDM pattern.

[0140] In some cases, code for determining 822 may include code for determining a need for reduced capacity on the second access link to communicate on the third access link.

[0141] In some cases, code for transmitting 820 may include code for transmitting an indication of a need for reduced capability to the second base station.

[0142] In some cases, code for communicating 824 may include code for communicating on a third access link using the second SIM while simultaneously communicating on the second access link using the first SIM.

[0143] In some cases, code for transmitting 820 may include code for transmitting an indication of the need for reduced capability directly to the second base station.

[0144] In some cases, code for sending 820 may include code for sending the indication of the need for reduced capability using a signaling radio bearer established directly between the UE and the second base station.

[0145] In some cases, code for transmitting 820 may include code for transmitting an indication of a need for reduced capability indirectly to the second base station via the first base station.

[0146] In some cases, code for sending 820 may include code for sending an indication of the need for reduced capability to the first base station in a transparent container to be forwarded to the second base station.

[0147] In certain aspects, the processor 804 may include circuitry configured to implement code stored in the computer-readable medium / memory 812, such as for executing Figure 3 、 Figure 5 and Figure 6 The operations shown and other operations disclosed herein for multiple USIM and dual connectivity operations. For example, the processor 804 includes circuitry 834 for establishing, circuitry 836 for identifying, circuitry 838 for tuning, circuitry 840 for transmitting, circuitry 842 for determining, circuitry 844 for communicating, and circuitry 846 for receiving.

[0148] In some cases, the circuitry for establishing 834 may include circuitry for establishing a first access link associated with a first subscriber identity module (SIM) of the UE for communicating with the first base station.

[0149] Additionally, in some cases, the circuitry for establishing 834 may include circuitry for establishing a second access link associated with the first SIM of the UE for communicating with a second base station.

[0150] Additionally, in some cases, the circuitry for establishing 834 may include circuitry for establishing a third access link associated with a second SIM of the UE.

[0151] In some cases, the circuitry for identifying 836 may include circuitry for identifying at least one time division multiplexing (TDM) pattern indicating a set of time periods during which the third access link is used.

[0152] In some cases, the circuitry for tuning 838 may include circuitry for tuning to the third access link to communicate using the second SIM during at least one time period of the set of time periods indicated in the TDM pattern.

[0153] In some cases, the circuitry for transmitting 840 may include circuitry for transmitting an indication of the at least one TDM pattern to the second base station. In some cases, the circuitry for transmitting 840 may include circuitry for transmitting the indication of the at least one TDM pattern directly to the second base station. In some cases, the circuitry for transmitting 840 may include circuitry for transmitting the indication of the at least one TDM pattern to the second base station via the first base station. In some cases, the circuitry for transmitting 840 may include circuitry for transmitting the indication of the at least one TDM pattern to the first base station using a transparent container.

[0154] In some cases, the circuitry for receiving 846 may include circuitry for receiving an acknowledgment from the second base station acknowledging the at least one TDM pattern.

[0155] In some cases, the circuitry for transmitting 840 may include circuitry for transmitting an index value associated with at least one TDM pattern.

[0156] In some cases, the circuitry for receiving 846 may include circuitry for receiving an indication of at least one TDM pattern from the second base station.

[0157] In some cases, the circuitry for identifying 836 may include circuitry for identifying at least one TDM pattern based on an index value.

[0158] In some cases, the circuitry for receiving 846 may include circuitry for receiving signaling indicating the start of at least one TDM pattern.

[0159] In some cases, the circuitry for sending 840 may include circuitry for sending a request to the second base station to stop at least one TDM pattern based on one or more criteria.

[0160] In some cases, the circuitry for receiving 846 may include circuitry for receiving an indication to stop at least one TDM pattern from the second base station.

[0161] In some cases, the circuitry for sending 840 may include circuitry for sending a request to the second base station to change at least one TDM pattern.

[0162] In some cases, the circuitry for sending 840 may include circuitry for sending an explicit indication requesting a change to the at least one TDM pattern in radio resource control (RRC) signaling.

[0163] In some cases, the circuitry for sending 840 may include circuitry for sending an implicit indication requesting a change in at least one TDM pattern in medium access control (MAC) signaling.

[0164] In some cases, the circuitry for receiving 846 may include circuitry for periodically receiving paging or system information on the third access link during the set of time periods indicated in the at least one TDM pattern.

[0165] In some cases, the circuitry for transmitting 840 may include circuitry for periodically transmitting a Tracking Area Update (TAU) or a Radio Access Network Notification Area Update (RNAU) during a set of time periods indicated in the at least one TDM pattern.

[0166] In some cases, the circuitry for sending 840 may include circuitry for sending at least one of a tracking area update (TAU) or a radio access network notification area update (RNAU) during a set of time periods indicated in the at least one TDM pattern due to a mobility decision.

[0167] In some cases, the circuitry for transmitting 840 may include circuitry for transmitting an uplink transmission using the first access link during at least one time period of the set of time periods indicated in the at least one TDM pattern.

[0168] In some cases, the circuitry for communicating 844 may include circuitry for communicating with the first base station over a third access link using the second SIM.

[0169] In some cases, circuitry for communicating 844 may include circuitry for communicating with the second base station over a third access link using the second SIM.

[0170] In some cases, circuitry for communicating 844 may include circuitry for communicating with a third base station over a third access link using the second SIM.

[0171] In some cases, the circuitry for sending 840 may include circuitry for sending an indication to the second base station indicating a reduced capability of the second access link.

[0172] In some cases, the circuitry for transmitting 840 may include circuitry for transmitting uplink signaling and data only on the first access link during at least one time period of the set of time periods indicated in the TDM pattern.

[0173] In some cases, the circuitry for determining 842 may include circuitry for determining a need for reduced capacity on the second access link to communicate on the third access link.

[0174] In some cases, the circuitry for transmitting 840 may include circuitry for transmitting an indication of the need for reduced capability to the second base station.

[0175] In some cases, the circuitry for communicating 844 may include circuitry for communicating on the third access link using the second SIM while simultaneously communicating on the second access link using the first SIM.

[0176] In some cases, the circuitry for transmitting 840 may include circuitry for transmitting the indication of the need for reduced capability directly to the second base station.

[0177] In some cases, the circuitry for sending 840 may include circuitry for sending the indication of the need for reduced capability using a signaling radio bearer established directly between the UE and the second base station.

[0178] In some cases, the circuitry for transmitting 840 may include circuitry for transmitting the indication of the need for reduced capability indirectly to the second base station via the first base station.

[0179] In some cases, the circuitry for sending 840 may include circuitry for sending the indication of the need for reduced capability to the first base station in a transparent container to be forwarded to the second base station.

[0180] Figure 9 The diagram shows that a method may include operations configured to perform the techniques disclosed herein (such as Figure 4 、 Figure 5 and Figure 7 900 includes various components (e.g., corresponding to means plus functional components) that include the operations illustrated in

[0065] and other operations disclosed herein for multiple USIM and dual connectivity operations. The communication device 900 includes a processing system 902 coupled to a transceiver 908. The transceiver 908 is configured to transmit and receive signals for the communication device 900, such as the various signals described herein, via an antenna 910. The processing system 902 can be configured to perform processing functions for the communication device 900, including processing signals received and / or to be transmitted by the communication device 900.

[0181] The processing system 902 includes a processor 904 coupled to a computer-readable medium / memory 912 via a bus 906. In some aspects, the computer-readable medium / memory 912 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 904, cause the processor 904 to perform Figure 4 、 Figure 5 and Figure 7The operations shown and other operations of the various techniques discussed herein for multiple USIM and dual connectivity operations. In some aspects, the computer readable medium / memory 912 stores a computer program for executing Figure 4 、 Figure 5 and Figure 7 For example, the computer readable medium / memory 912 stores code for establishing 914, code for identifying 916, code for lowering or stopping 918, code for receiving 920, and code for sending 922.

[0182] In some cases, code for establishing 914 may include code for establishing a first access link for communicating with a user equipment.

[0183] In some cases, code for identifying 916 may include code for identifying at least one time division multiplexing (TDM) pattern indicating a set of time periods for the UE to tune to the second access link to communicate with the second base station.

[0184] In some cases, code for reducing or stopping 918 may include code for reducing or stopping transmission to the UE on the first access link during at least one time period of the set of time periods.

[0185] In some cases, code for receiving 920 can include code for receiving an indication of at least one TDM pattern to a second base station, wherein identifying the at least one TDM pattern is based on the received indication of the at least one TDM pattern.

[0186] In some cases, code for receiving 920 may include code for indirectly receiving an indication of at least one TDM pattern from the UE via a third base station.

[0187] In some cases, code for receiving 920 may include code for receiving an indication of a TDM pattern from a third base station in a transparent container.

[0188] In some cases, code for sending 922 may include code for sending an acknowledgment to the UE acknowledging at least one TDM pattern.

[0189] In some cases, code for receiving 920 may include code for receiving an indication of at least one TDM pattern from a UE, including receiving an index value associated with the at least one TDM pattern.

[0190] In some cases, code for identifying 916 may include code for identifying at least one TDM pattern based on an index value.

[0191] In some cases, code for transmitting 922 may include code for transmitting an indication of at least one TDM pattern to a UE.

[0192] In some cases, code for transmitting 922 may include code for transmitting an index value associated with at least one TDM pattern.

[0193] In some cases, the code for sending 922 may include code for sending signaling indicating the start of at least one TDM pattern, wherein the signaling includes at least one of medium access control (MAC) layer signaling or physical (PHY) layer signaling.

[0194] In some cases, code for receiving 920 may include code for receiving a request to the second base station to stop at least one TDM pattern based on one or more criteria.

[0195] In some cases, the code for sending 922 may include code for sending an indication to the UE to stop at least one TDM pattern.

[0196] In some cases, code for receiving 920 may include code for receiving an indication from a UE to change at least one TDM pattern.

[0197] In some cases, the code for receiving 920 may include code for receiving an explicit indication in radio resource control (RRC) signaling requesting a change to the at least one TDM pattern.

[0198] In some cases, code for receiving 920 may include code for receiving an implicit indication in medium access control (MAC) signaling requesting a change in at least one TDM pattern.

[0199] In some cases, code for receiving 920 may include code for receiving an indication from the UE indicating a reduced capability of the first access link.

[0200] In some cases, code for receiving 920 may include code for receiving, from the UE, an indication of a need for reduced capabilities on the first access link.

[0201] In some cases, code for reducing or stopping 918 may include code for reducing the number of transmissions to the UE on the first access link in response to the indication of a need for reduced capacity.

[0202] In some cases, code for receiving 920 may include code for receiving an indication of a need for reduced capabilities directly from the UE.

[0203] In some cases, the code for receiving 920 may include code for receiving the indication using a signaling radio bearer established directly between the UE and the first base station.

[0204] In some cases, code for receiving 920 may include code for receiving an indication indirectly from the UE via the second base station.

[0205] In certain aspects, the processor 904 may include circuitry configured to implement code stored in the computer-readable medium / memory 912, such as for executing Figure 4 、 Figure 5 and Figure 7 The operations shown and other operations disclosed herein for multiple USIM and dual connectivity operations. For example, the processor 904 includes circuitry 934 for establishing, circuitry 916 for identifying, circuitry 918 for lowering or stopping, circuitry 920 for receiving, and circuitry 922 for sending.

[0206] In some cases, circuitry for establishing 934 may include circuitry for establishing a first access link for communicating with the user equipment.

[0207] In some cases, the circuitry for identifying 936 may include circuitry for identifying at least one time division multiplexing (TDM) pattern indicating a set of time periods for the UE to tune to the second access link to communicate with the second base station.

[0208] In some cases, the circuitry for reducing or stopping 938 may include circuitry for reducing or stopping transmission to the UE on the first access link during at least one time period of the set of time periods.

[0209] In some cases, the circuitry for receiving 940 may include circuitry for receiving an indication of at least one TDM pattern to the second base station, wherein identifying the at least one TDM pattern is based on the received indication of the at least one TDM pattern.

[0210] In some cases, the circuitry for receiving 940 may include circuitry for receiving an indication of the at least one TDM pattern indirectly from the UE via a third base station.

[0211] In some cases, circuitry for receiving 940 may include circuitry for receiving an indication of the TDM pattern from a third base station in the transparent container.

[0212] In some cases, the circuitry for transmitting 942 may include circuitry for transmitting an acknowledgment to the UE acknowledging the at least one TDM pattern.

[0213] In some cases, the circuitry for receiving 940 may include circuitry for receiving an indication of at least one TDM pattern from the UE, including receiving an index value associated with the at least one TDM pattern.

[0214] In some cases, circuitry for identifying 936 may include circuitry for identifying at least one TDM pattern based on an index value.

[0215] In some cases, the circuitry for transmitting 942 may include circuitry for transmitting an indication of at least one TDM pattern to the UE.

[0216] In some cases, the circuitry for transmitting 942 may include circuitry for transmitting an index value associated with at least one TDM pattern.

[0217] In some cases, the circuitry for sending 942 may include circuitry for sending signaling indicating the start of at least one TDM pattern, wherein the signaling includes at least one of medium access control (MAC) layer signaling or physical (PHY) layer signaling.

[0218] In some cases, the circuitry for receiving 940 may include circuitry for receiving a request to the second base station to stop at least one TDM pattern based on one or more criteria.

[0219] In some cases, the circuitry for sending 942 may include circuitry for sending an indication to the UE to stop at least one TDM pattern.

[0220] In some cases, the circuitry for receiving 940 may include circuitry for receiving an indication from the UE to change at least one TDM pattern.

[0221] In some cases, the circuitry for receiving 940 may include circuitry for receiving an explicit indication in radio resource control (RRC) signaling requesting a change to the at least one TDM pattern.

[0222] In some cases, the circuitry for receiving 940 may include circuitry for receiving an implicit indication in medium access control (MAC) signaling requesting a change to at least one TDM pattern.

[0223] In some cases, the circuitry for receiving 940 may include circuitry for receiving an indication from the UE indicating a reduced capability of the first access link.

[0224] In some cases, the circuitry for receiving 940 may include circuitry for receiving an indication from the UE of a need for reduced capabilities on the first access link.

[0225] In some cases, the circuitry for reducing or stopping 938 may include circuitry for reducing the number of transmissions to the UE over the first access link in response to the indication of a need for reduced capacity.

[0226] In some cases, the circuitry for receiving 940 may include circuitry for receiving an indication of the need for reduced capabilities directly from the UE.

[0227] In some cases, the circuit for receiving 940 may include circuitry for receiving the indication using a signaling radio bearer established directly between the UE and the first base station.

[0228] In some cases, the circuitry for receiving 940 may include circuitry for receiving the indication indirectly from the UE via the second base station.

[0229] Example aspects

[0230] Aspect 1: A method for wireless communication performed by a user equipment (UE), comprising: establishing a first access link associated with a first subscriber identity module (SIM) of the UE for communicating with a first base station; establishing a second access link associated with the first SIM of the UE for communicating with a second base station; establishing a third access link associated with the second SIM of the UE; identifying at least one time division multiplexing (TDM) pattern, the at least one TDM pattern indicating a set of time periods for using the third access link; and tuning to the third access link to communicate using the second SIM during at least one time period of the set of time periods indicated in the TDM pattern.

[0231] Aspect 2: The method according to aspect 1 further includes sending an indication of at least one TDM pattern to a second base station.

[0232] Aspect 3: The method according to aspect 2, wherein sending an indication of the TDM pattern to the second base station comprises sending an indication of at least one TDM pattern directly to the second base station.

[0233] Aspect 4: The method according to aspect 2, wherein sending an indication of the TDM pattern to the second base station comprises sending an indication of at least one TDM pattern to the second base station via the first base station.

[0234] Aspect 5: The method according to aspect 4, wherein sending the indication of the at least one TDM pattern to the second base station via the first base station includes sending the indication of the at least one TDM pattern to the first base station using a transparent container.

[0235] Aspect 6: The method according to any one of Aspects 1 to 5, further comprising receiving a confirmation confirming the at least one TDM pattern from the second base station.

[0236] Aspect 7: The method of claim 6, wherein the confirmation is received directly from the second base station or from the first base station in a transparent container.

[0237] Aspect 8: The method according to any one of Aspects 2 to 7, wherein sending an indication of at least one TDM pattern to the second base station comprises sending an index value associated with the at least one TDM pattern.

[0238] Aspect 9: The method according to any one of aspects 1 to 8, wherein identifying at least one TDM pattern comprises receiving an indication of the at least one TDM pattern from the second base station.

[0239] Aspect 10: The method according to aspect 9, wherein the indication of the at least one TDM pattern comprises an index value associated with the at least one TDM pattern, and the at least one TDM pattern is identified based on the index value.

[0240] Aspect 11: The method according to any one of Aspects 9 to 10, wherein the indication of the at least one TDM pattern is received from the second base station via the first base station in a transparent container.

[0241] Aspect 12: The method according to any one of Aspects 9 to 11, wherein the indication of the at least one TDM pattern is received in radio resource control (RRC) signaling.

[0242] Aspect 13: The method according to Aspect 12, wherein at least one TDM pattern starts immediately after the UE processes the RRC signaling.

[0243] Aspect 14: The method according to any one of Aspects 12 to 13, further comprising receiving signaling indicating the start of at least one TDM pattern, wherein the signaling comprises at least one of medium access control (MAC) layer signaling or physical (PHY) layer signaling.

[0244] Aspect 15: The method according to aspect 14, wherein the MAC signaling includes a MAC control element (MAC-CE), and the PHY layer signaling includes downlink control information (DCI).

[0245] Aspect 16: The method according to any one of Aspects 14 to 15, wherein the MAC layer signaling or the PHY layer signaling includes an index value associated with at least one TDM pattern.

[0246] Aspect 17: The method according to any one of Aspects 14 to 16, wherein the at least one TDM pattern starts immediately after receiving signaling instructing to start the at least one TDM pattern.

[0247] Aspect 18: The method according to any one of aspects 1 to 17, further comprising sending a request to the second base station to stop at least one TDM pattern based on one or more criteria.

[0248] Aspect 19: The method of Aspect 18, wherein the one or more criteria include the start of a voice call.

[0249] Aspect 20: The method according to any one of Aspects 1 to 19, further comprising receiving an instruction to stop at least one TDM pattern from the second base station.

[0250] Aspect 21: A method according to Aspect 20, wherein an indication to stop at least one TDM pattern is received in at least one of medium access control (MAC) layer signaling or physical (PHY) layer signaling, and the indication to stop at least one TDM pattern includes an index value associated with the at least one TDM pattern.

[0251] Aspect 22: The method according to any one of Aspects 1 to 21, further comprising sending a request to the second base station to change at least one TDM pattern.

[0252] Aspect 23: A method according to Aspect 22, wherein sending a request to change at least one TDM pattern includes at least one of the following: sending an explicit indication of a request to change at least one TDM pattern in radio resource control (RRC) signaling, or sending an implicit indication of a request to change at least one TDM pattern in medium access control (MAC) signaling, wherein the implicit indication includes an index value associated with the at least one TDM pattern.

[0253] Aspect 24: The method according to any one of Aspects 1 to 23, wherein at least one TDM pattern is applied only to downlink transmission or only to uplink transmission.

[0254] Aspect 25: The method according to any one of Aspects 1 to 24, wherein at least one TDM pattern is periodic.

[0255] Aspect 26: The method according to Aspect 25 further includes at least one of the following: periodically receiving paging or system information on a third access link during a set of time periods indicated in at least one TDM pattern, or periodically sending tracking area updates (TAUs) or radio access network notification area updates (RNAUs) during a set of time periods indicated in at least one TDM pattern.

[0256] Aspect 27: The method according to any one of Aspects 1 to 24, wherein at least one TDM pattern is aperiodic.

[0257] Aspect 28: The method according to aspect 27 further comprises sending at least one of a tracking area update (TAU) or a radio access network notification area update (RNAU) during a set of time periods indicated in at least one TDM pattern due to a mobility decision.

[0258] Aspect 29: The method according to any one of aspects 1 to 28, further comprising sending an uplink transmission using the first access link during at least one time period of the set of time periods indicated in the at least one TDM pattern.

[0259] Aspect 30: The method according to any one of Aspects 1 to 29, wherein at least one TDM pattern is semi-statically configured.

[0260] Aspect 31: The method according to any one of Aspects 1 to 30, wherein the first base station comprises a primary node, and the second base station comprises a secondary node.

[0261] Aspect 32: The method according to any one of Aspects 1 to 31, wherein the first base station comprises a Long Term Evolution (LTE) base station, and the second base station comprises a 5G base station.

[0262] Aspect 33: A method according to any one of Aspects 1 to 32, wherein, during at least one time period of the set of time periods indicated in at least one TDM pattern, tuning to a third access link to communicate using a second SIM includes: communicating with a first base station on a third access link using the second SIM, communicating with a second base station on a third access link using the second SIM, or communicating with a third base station on a third access link using the second SIM, wherein the third base station is different from the first base station and the second base station.

[0263] Aspect 34: A method according to any one of Aspects 1 to 33, wherein identifying at least one TDM pattern includes sending an indication of reduced capability of a second access link to a second base station, wherein the second access link operates according to the reduced capability during at least one time period of a set of time periods indicated in the TDM pattern.

[0264] Aspect 35: The method according to any one of Aspects 1 to 34, further comprising sending uplink signaling and data only on the first access link during at least one time period of the set of time periods indicated in the TDM pattern.

[0265] Aspect 36: A method for wireless communication performed by a first base station (BS), comprising: establishing a first access link for communicating with a user equipment; identifying at least one time division multiplexing (TDM) pattern, the at least one TDM pattern indicating a set of time periods used by the UE to tune to a second access link to communicate with a second base station; and during at least one time period of the set of time periods, doing one of the following: reducing or stopping transmission to the UE on the first access link.

[0266] Aspect 37: The method according to aspect 36, further comprising receiving an indication of at least one TDM pattern to the second base station, wherein identifying the at least one TDM pattern is based on the received indication of the at least one TDM pattern.

[0267] Aspect 38: The method according to aspect 37, wherein the indication of the TDM pattern to the second base station is received directly from the UE.

[0268] Aspect 39: The method according to any one of Aspects 37-38, wherein receiving an indication of the TDM pattern from the UE comprises indirectly receiving an indication of at least one TDM pattern from the UE via a third base station.

[0269] Aspect 40: The method of aspect 39, wherein receiving the indication of the TDM pattern indirectly from the UE via the third base station comprises receiving the indication of the TDM pattern from the third base station in a transparent container.

[0270] Aspect 41: The method according to any one of Aspects 37 to 40, further comprising sending a confirmation confirming at least one TDM pattern to the UE.

[0271] Aspect 42: The method according to aspect 41, wherein the confirmation is sent directly to the UE or to a third base station in a transparent container.

[0272] Aspect 43: The method according to any one of Aspects 37 to 42, wherein receiving an indication of at least one TDM pattern from the UE comprises receiving an index value associated with the at least one TDM pattern, and identifying the at least one TDM pattern based on the index value.

[0273] Aspect 44: The method according to any one of Aspects 36 to 43, wherein a third access link is established between a third base station and the UE.

[0274] Aspect 45: The method according to any one of Aspects 36 to 44, wherein the third base station comprises a master node, and the first base station comprises a secondary node.

[0275] Aspect 46: A method according to any one of Aspects 36 to 45, wherein the third base station comprises a Long Term Evolution (LTE) base station, and the first base station comprises a 5G base station.

[0276] Aspect 47: The method according to any one of Aspects 36 to 46, further comprising sending an indication of at least one TDM pattern to a UE.

[0277] Aspect 48: The method according to aspect 47, wherein sending an indication of at least one TDM pattern to the UE comprises sending an index value associated with the at least one TDM pattern.

[0278] Aspect 49: The method according to any one of Aspects 47-48, wherein the indication of the at least one TDM pattern is sent indirectly to the UE via a third base station in a transparent container.

[0279] Aspect 50: The method according to any one of Aspects 47 to 49, wherein the indication of the at least one TDM pattern is sent in radio resource control (RRC) signaling.

[0280] Aspect 51: The method according to aspect 50 further includes sending signaling indicating the start of at least one TDM pattern, wherein the signaling includes at least one of medium access control (MAC) layer signaling or physical (PHY) layer signaling.

[0281] Aspect 52: The method according to aspect 51, wherein the MAC signaling includes a MAC control element (MAC-CE), and the PHY layer signaling includes downlink control information (DCI).

[0282] Aspect 53: The method according to any one of Aspect 51-Aspect 52, wherein the MAC layer signaling or the PHY layer signaling includes an index value associated with at least one TDM pattern.

[0283] Aspect 54: The method according to any one of Aspects 36 to 53, further comprising receiving a request for the second base station to stop at least one TDM pattern based on one or more criteria.

[0284] Aspect 55: The method of aspect 54, wherein the one or more criteria include the start of a voice call at the UE.

[0285] Aspect 56: The method according to any one of Aspects 36 to 55, further comprising sending an indication to the UE to stop at least one TDM pattern.

[0286] Aspect 57: A method according to Aspect 56, wherein the indication to stop at least one TDM pattern is sent in at least one of medium access control (MAC) layer signaling or physical (PHY) layer signaling, and the indication to stop at least one TDM pattern includes an index value associated with the at least one TDM pattern.

[0287] Aspect 58: The method according to any one of Aspects 36 to 57, further comprising receiving a request to change at least one TDM pattern from the UE.

[0288] Aspect 59: A method according to Aspect 58, wherein receiving a request to change at least one TDM pattern includes at least one of the following: receiving an explicit indication of a request to change at least one TDM pattern in radio resource control (RRC) signaling, or receiving an implicit indication of a request to change at least one TDM pattern in medium access control (MAC) signaling, wherein the implicit indication includes an index value associated with the at least one TDM pattern.

[0289] Aspect 60: The method according to any one of Aspects 36 to 59, wherein at least one TDM pattern is applied only to downlink transmission or only to uplink transmission.

[0290] Aspect 61: The method according to any one of Aspects 36 to 60, wherein at least one TDM pattern is periodic.

[0291] Aspect 62: The method according to any one of Aspects 36 to 60, wherein at least one TDM pattern is aperiodic.

[0292] Aspect 63: The method according to any one of Aspects 36 to 62, wherein at least one TDM pattern is semi-statically configured.

[0293] Aspect 64: The method according to any one of Aspects 36 to 63, wherein identifying at least one TDM pattern comprises receiving an indication from the UE indicating a reduced capability of the first access link.

[0294] Aspect 65: A method for wireless communication performed by a user equipment (UE), comprising: establishing a first access link associated with a first subscriber identity module (SIM) of the UE for communicating with a first base station, establishing a second access link associated with the first SIM of the UE for communicating with a second base station, establishing a third access link associated with the second SIM of the UE, determining a need for reduced capability on the second access link to communicate on the third access link, sending an indication of the need for reduced capability to the second base station, and communicating on the third access link using the second SIM while communicating on the second access link using the first SIM, wherein the communication on the second access link is performed with the reduced capability.

[0295] Aspect 66: The method of aspect 65, wherein sending the indication of the need for reduced capability to the second base station comprises sending the indication directly to the second base station.

[0296] Aspect 67: The method according to aspect 66, wherein directly sending the indication to the second base station comprises sending the indication using a signaling radio bearer established directly between the UE and the second base station.

[0297] Aspect 68: The method of aspect 65, wherein sending the indication of the need for reduced capability to the second base station comprises sending the indication indirectly to the second base station via the first base station.

[0298] Aspect 69: The method according to Aspect 68, wherein indirectly sending the indication to the second base station via the first base station comprises sending the indication to the first base station in a transparent container to be forwarded to the second base station.

[0299] Aspect 70: The method according to any one of Aspects 65 to 69, wherein determining the need for reduced capability on the second access link is based on the capability of the UE to simultaneously support communications on the second access link and communications on the third access link.

[0300] Aspect 71: The method according to any one of aspects 65 to 69, wherein the indication of the need for reduced capability indicates to the second base station to reduce the transmission amount of the second base station to the UE on the second access link.

[0301] Aspect 72: The method according to any one of Aspects 65 to 71, wherein the first base station comprises a Master Node (MN), and the second base station comprises a Secondary Node (SN).

[0302] Aspect 73: A method for wireless communication performed by a first base station (BS), comprising: establishing a first access link for communicating with a user equipment (UE); receiving an indication of a need for reduced capability on the first access link from the UE; and reducing the number of transmissions to the UE on the first access link in response to the indication of the need for reduced capability.

[0303] Aspect 74: The method according to aspect 73, wherein receiving the indication of the need for reduced capability from the UE comprises receiving the indication directly from the UE.

[0304] Aspect 75: The method according to aspect 74, wherein receiving the indication directly from the UE comprises receiving the indication using a signaling radio bearer established directly between the UE and the first base station.

[0305] Aspect 76: The method according to aspect 73, wherein receiving the indication of the need for reduced capability from the UE comprises receiving the indication indirectly from the UE via the second base station.

[0306] Aspect 77: The method according to Aspect 76, wherein the indication is received from the second base station in a transparent container.

[0307] Aspect 78: The method according to any one of Aspects 73 to 77, wherein the second base station comprises a Master Node (MN), and the first base station comprises a Secondary Node (SN).

[0308] Other considerations

[0309] The techniques described herein can be used for various wireless communication technologies such as NR (e.g., 5G NR), 3GPP Long Term Evolution (LTE), Advanced LTE (LTE-A), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA), and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network can implement radio technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000, etc. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. cdma2000 covers IS-2000, IS-95, and IS-856 standards. A TDMA network can implement radio technologies such as Global System for Mobile Communications (GSM). OFDMA networks can implement radio technologies such as NR (e.g., 5G RA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and others. UTRA and E-UTRA are part of the Universal Mobile Telecommunications System (UMTS). LTE and LTE-A are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization called the 3rd Generation Partnership Project (3GPP). cdma2000 and UMB are described in documents from an organization called the 3rd Generation Partnership Project 2 (3GPP2). NR is an emerging wireless communication technology under development.

[0310] The techniques described herein can be used for the wireless networks and radio technologies mentioned herein as well as other wireless networks and radio technologies. For clarity, although various aspects may be described herein using terms commonly associated with 3G, 4G, and / or 5G wireless technologies, various aspects of the present disclosure may be applied to communication systems based on other generations.

[0311] In 3GPP, the term "cell" can refer to the coverage area of a Node B (NB) and / or the NB subsystem serving that coverage area, depending on the context in which the term is used. In NR systems, the terms "cell" and "base station," next-generation Node B (gNB or gNodeB), access point (AP), distributed unit (DU), carrier, or transmit / receive point (TRP) are used interchangeably. A base station (BS) can provide communication coverage for macrocells, picocells, femtocells, and / or other types of cells. A macrocell can cover a relatively large geographic area (e.g., several kilometers in radius) and can allow unrestricted access to UEs with service subscriptions. A picocell can cover a relatively small geographic area and can allow unrestricted access to UEs with service subscriptions. A femtocell can cover a relatively small geographic area (e.g., a home) and can allow restricted access to UEs associated with the femtocell (e.g., UEs in a closed subscriber group (CSG), UEs of users in a home, etc.). A base station for a macrocell can be referred to as a macro BS. A base station for a picocell can be referred to as a pico BS. A base station for a femtocell can be referred to as a femto BS or a home BS.

[0312] A UE may also be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, customer premises equipment (CPE), a cellular phone, a smartphone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a home appliance, a medical device or medical equipment, a biometric sensor / device, a wearable device (such as a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet, etc.)), an entertainment device (e.g., a music device, a video device, a satellite radio, etc.), an in-vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium. Some UEs may be considered machine type communication (MTC) devices or evolved MTC (eMTC) devices. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node can, for example, provide connectivity to or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs can be considered Internet of Things (IoT) devices, which can be narrowband Internet of Things (NB-IoT) devices.

[0313] Some wireless networks (e.g., LTE) use orthogonal frequency division multiplexing (OFDM) on the downlink and single-carrier frequency division multiplexing (SC-FDM) on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, which are often also referred to as tones, bins, etc. Each subcarrier can be modulated with data. In general, modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system bandwidth. For example, the subcarrier spacing can be 15 kHz, and the minimum resource allocation (called a "resource block" (RB)) can be 12 subcarriers (or 180 kHz). Therefore, the nominal fast Fourier transform (FFT) size can be equal to 128, 256, 512, 1024, or 2048 for system bandwidths of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), respectively. The system bandwidth can also be divided into subbands. For example, a subband can cover 1.08 MHz (e.g., 6 RBs), and there can be 1, 2, 4, 8, or 16 subbands for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, respectively. In LTE, the basic transmission time interval (TTI) or packet duration is a 1 millisecond subframe.

[0314] NR can utilize OFDM with CP on both the uplink and downlink and includes support for half-duplex operation using TDD. In NR, a subframe is still 1 millisecond, but the basic TTI is called a slot. A subframe contains a variable number of slots (e.g., 1, 2, 4, 8, 16, ... slots) depending on the subcarrier spacing. An NR RB is 12 consecutive frequency subcarriers. NR can support a base subcarrier spacing of 15 kHz, and other subcarrier spacings (e.g., 30 kHz, 60 kHz, 120 kHz, 240 kHz, etc.) can be defined relative to the base subcarrier spacing. Symbol and slot lengths scale with subcarrier spacing. The CP length also depends on the subcarrier spacing. Beamforming can be supported, and beam directions can be dynamically configured. MIMO transmission with precoding can also be supported. In some examples, MIMO configurations in the DL can support up to 8 transmit antennas with up to 8 streams and multi-layer DL transmission of up to 2 streams per UE. In some examples, multi-layer transmission of up to 2 streams per UE can be supported. Aggregation of multiple cells can support up to 8 serving cells.

[0315] In some examples, access to the air interface can be scheduled. A scheduling entity (e.g., a BS) allocates resources for communications between some or all devices and equipment within its service area or cell. The scheduling entity can be responsible for scheduling, allocating, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communications, the subordinate entities utilize the resources allocated by the scheduling entity. The base station is not the only entity that can be used as a scheduling entity. In some examples, a UE can be used as a scheduling entity and can schedule resources for one or more subordinate entities (e.g., one or more other UEs), and other UEs can use the resources scheduled by the UE for wireless communication. In some examples, a UE can be used as a scheduling entity in a peer-to-peer (P2P) network and / or a mesh network. In the mesh network example, in addition to communicating with the scheduling entity, UEs can also communicate directly with each other.

[0316] In some examples, two or more slave entities (e.g., UEs) can communicate with each other using sidelink signals. Real-world applications of such sidelink communications may include public safety, proximity services, UE-to-network relay, vehicle-to-vehicle (V2V) communications, Internet of Everything (IoE) communications, IoT communications, mission-critical grids, and / or various other suitable applications. Generally, a sidelink signal can refer to a signal that is communicated from one slave entity (e.g., UE1) to another slave entity (e.g., UE2) without relaying the communication through a scheduling entity (e.g., UE or BS), even though the scheduling entity may be used for scheduling and / or control purposes. In some examples, the sidelink signals can be communicated using licensed spectrum (unlike wireless local area networks, which typically use unlicensed spectrum).

[0317] The methods disclosed herein include one or more steps or actions for implementing the methods. Method steps and / or actions may be interchangeable with one another without departing from the scope of the claims. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions may be modified without departing from the scope of the claims.

[0318] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items, including single members. As an example, "at least one of a, b, or c" is intended to encompass a, b, c, ab, ac, bc, and abc, as well as any combination with multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, ccc, or any other order of a, b, and c).

[0319] As used herein, the term "determine" includes a variety of actions. For example, "determine" may include calculating, estimating, processing, deriving, investigating, searching (e.g., searching in a table, database, or another data structure), judging, etc. Furthermore, "determine" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), etc. Furthermore, "determine" may include resolving, selecting, choosing, establishing, etc.

[0320] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Accordingly, the claims are not intended to be limited to the aspects shown herein, but are to be given the full scope consistent with the claim language, and unless specifically so stated, reference to an element in the singular is not intended to mean "one and only one," but rather "one or more." Unless otherwise specifically stated, the term "some" refers to one or more. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to one of ordinary skill in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. Furthermore, nothing disclosed herein is intended to be exclusive to disclosure, regardless of whether such disclosure is explicitly recited in a claim. No claim element is to be construed under 35 U.S.C. §112(f) unless the element is explicitly recited using the phrase "means for..." or, in the case of a method claim, the element is recited using the phrase "step for..."

[0321] The various operations of the above methods may be performed by any suitable components capable of performing the corresponding functions. Such components may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs), or processors. Generally, where there are operations illustrated in the accompanying drawings, these operations may have corresponding parts-plus-function components with similar numbers.

[0322] The various illustrative logical blocks, modules, and circuits described in connection with the present disclosure may be implemented or performed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.

[0323] If implemented in hardware, an example hardware configuration may include a processing system in a wireless node. The processing system may be implemented using a bus architecture. The bus may include any number of interconnecting buses and bridges, depending on the specific application and overall design constraints of the processing system. The bus may connect various circuits including a processor, a machine-readable medium, and a bus interface. The bus interface may be used to connect a network adapter, etc., to the processing system via the bus. The network adapter may be used to implement signal processing functions at the physical layer. In the user equipment 120 (see Figure 1 ), a user interface (e.g., keyboard, display, mouse, joystick, etc.) may also be connected to the bus. The bus may also connect various other circuits such as timing sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and will not be described further. The processor may be implemented using one or more general and / or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits that can execute software. Those skilled in the art will recognize how to best implement the described functionality for the processing system depending on the specific application and the overall design constraints imposed on the entire system.

[0324] If implemented in software, these functions may be stored or transmitted on a computer-readable medium as one or more instructions or codes. Whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, software should be broadly interpreted to mean instructions, data, or any combination thereof. Computer-readable media include both computer storage media and communication media, including any medium that facilitates the transfer of a computer program from one location to another. The processor may be responsible for managing the bus and general processing, including the execution of software modules stored on a machine-readable storage medium. A computer-readable storage medium may be coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Alternatively, the storage medium may be integrated into the processor. For example, the machine-readable medium may include a transmission line, a carrier modulated by data, and / or a computer-readable storage medium having instructions stored thereon that is separate from the wireless node, all of which may be accessed by the processor via a bus interface. Alternatively or additionally, the machine-readable medium or any portion thereof may be integrated into the processor, such as may be present in a cache and / or general register file. Examples of machine-readable storage media may include, for example, RAM (random access memory), flash memory, ROM (read-only memory), PROM (programmable read-only memory), EPROM (erasable programmable read-only memory), EEPROM (electrically erasable programmable read-only memory), registers, magnetic disks, optical disks, hard drives, or any other suitable storage media, or any combination thereof. The machine-readable medium may be embodied in a computer program product.

[0325] A software module may include a single instruction or many instructions and may be distributed across several different code segments, between different programs, and across multiple storage media. A computer-readable medium may include multiple software modules. A software module includes instructions that, when executed by a device such as a processor, cause a processing system to perform various functions. A software module may include a sending module and a receiving module. Each software module may reside in a single storage device or be distributed across multiple storage devices. For example, when a triggering event occurs, a software module may be loaded from a hard drive into RAM. During execution of a software module, the processor may load some instructions into a cache to increase access speed. One or more cache lines may then be loaded into a general register file for execution by the processor. When referring to the functionality of a software module below, it will be understood that the functionality is implemented by the processor when instructions from that software module are executed.

[0326] Moreover, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared (IR), radio, and microwave are included in the definition of medium. Disk and disc, as used herein, include compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray Optical disks, where magnetic disks typically reproduce data magnetically, and optical disks reproduce data optically using lasers. Thus, in some aspects, computer-readable media may include non-transitory computer-readable media (e.g., tangible media). Additionally, for other aspects, computer-readable media may include transitory computer-readable media (e.g., signals). Combinations of the above should also be included within the scope of computer-readable media.

[0327] Thus, certain aspects may include a computer program product for performing the operations described herein. For example, such a computer program product may include a computer-readable medium having instructions stored (and / or encoded) thereon, the instructions being executable by one or more processors to perform the operations described herein, such as for performing the operations described herein and in Figure 3-Figure 7 and other operations for performing the various techniques discussed herein for multiple Universal Subscriber Identity Modules (USIMs) and dual connectivity operations.

[0328] In addition, it should be understood that the modules and / or other appropriate components for performing the methods and techniques described herein can be downloaded and / or otherwise obtained by the user terminal and / or base station. For example, such a device can be coupled to a server to facilitate the transfer of components for performing the methods described herein. Alternatively, the various methods described herein can be provided via a storage component (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or a floppy disk), so that the user terminal and / or base station can obtain the various methods when the storage component is coupled or provided to the device. In addition, any other suitable technology for providing the methods and techniques described herein to a device can be utilized.

[0329] It is to be understood that the claims are not limited to the precise configuration and components shown above, and that various modifications, changes and variations may be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

Claims

1. A method for wireless communication performed by a user equipment (UE), comprising: establishing a first access link associated with a first subscriber identity module SIM of the UE for communicating with a first base station; Establishing a second access link associated with the first SIM of the UE for communicating with a second base station; establishing a third access link associated with a second SIM of the UE; determining a need for reduced capacity on the second access link to communicate on the third access link; sending an indication of the need for the reduced capability to the second base station; as well as The second SIM is used to communicate on the third access link while the first SIM is used to communicate on the second access link, wherein the communication on the second access link occurs at the reduced capacity.

2. The method according to claim 1, wherein Sending the indication of the need for the reduced capability to the second base station includes sending the indication directly to the second base station.

3. The method according to claim 2, wherein: Sending the indication directly to the second base station includes sending the indication using a signaling radio bearer established directly between the UE and the second base station.

4. The method according to claim 1, wherein Sending the indication of the need for the reduced capability to the second base station includes sending the indication indirectly to the second base station via the first base station.

5. The method according to claim 4, wherein Sending the indication indirectly to the second base station via the first base station includes sending the indication to the first base station in a transparent container to be forwarded to the second base station.

6. The method according to claim 1, wherein Determining the need for the reduced capability on the second access link is based on an ability of the UE to support communication on the second access link and the third access link simultaneously.

7. The method according to claim 1, wherein The indication of the need for the reduced capability instructs the second base station to reduce an amount of transmission by the second base station to the UE on the second access link.

8. The method according to claim 1, wherein: The first base station comprises a master node MN; and The second base station includes a secondary node SN.

9. The method according to claim 1, wherein The indication requests the second base station to reduce transmission on the second access link during transmission on the third access link.

10. A method for wireless communication performed by a first base station (BS), wherein the first BS is in a wireless communication system including a user equipment (UE), the user equipment being configured to implement the method according to any one of claims 1 to 9, comprising: Establishing a first access link for communicating with a user equipment UE; receiving, from the UE, an indication to reduce a number of transmissions to the UE on the first access link; as well as In response to the indication, the number of transmissions to the UE on the first access link is reduced.

11. The method according to claim 10, wherein: Receiving the indication from the UE includes receiving the indication directly from the UE.

12. The method according to claim 11, wherein Receiving the indication directly from the UE includes receiving the indication using a signaling radio bearer established directly between the UE and the first base station.

13. The method according to claim 10, wherein: Receiving the indication from the UE includes receiving the indication indirectly from the UE via a second base station.

14. The method according to claim 13, wherein The indication is received from the second base station in a transparent container.

15. The method of claim 10, wherein: The second base station comprises a master node MN; and The first base station includes a secondary node SN.

16. An apparatus for wireless communication by a user equipment (UE), comprising: At least one processor configured to: establishing a first access link associated with a first subscriber identity module SIM of the UE for communicating with a first base station; Establishing a second access link associated with the first SIM of the UE for communicating with a second base station; establishing a third access link associated with a second SIM of the UE; determining a need for reduced capacity on the second access link to communicate on the third access link; sending an indication of the need for the reduced capability to the second base station; as well as communicating on the third access link using the second SIM while communicating on the second access link using the first SIM, wherein communicating on the second access link occurs at the reduced capacity; as well as A memory is coupled to the at least one processor.

17. The device according to claim 16, wherein The at least one processor is configured to send the indication of the need for the reduced capability to the second base station by sending the indication directly to the second base station.

18. The device according to claim 17, wherein The at least one processor is configured to send the indication directly to the second base station by sending the indication using a signaling radio bearer established directly between the UE and the second base station.

19. The device according to claim 16, wherein The at least one processor is configured to send the indication of the need for the reduced capability to the second base station by indirectly sending the indication to the second base station via the first base station.

20. The device according to claim 19, wherein The at least one processor is configured to indirectly send the indication to the second base station via the first base station by sending the indication to the first base station in a transparent container to be forwarded to the second base station.

21. The apparatus according to claim 16, wherein The at least one processor is configured to determine the need for the reduced capability on the second access link based on a capability of the UE to support communication on the second access link and the third access link simultaneously.

22. The apparatus according to claim 16, wherein The indication of the need for the reduced capability instructs the second base station to reduce an amount of transmission by the second base station to the UE on the second access link.

23. The apparatus of claim 16, wherein: The first base station comprises a master node MN; and The second base station includes a secondary node SN.

24. The apparatus according to claim 16, wherein The indication requests the second base station to reduce transmission on the second access link during transmission on the third access link.

25. An apparatus for performing wireless communication by a first base station (BS), wherein the first BS is in a wireless communication system including a user equipment, the user equipment being configured to implement the method according to any one of claims 1 to 9, comprising: At least one processor configured to: Establishing a first access link for communicating with a user equipment UE; receiving, from the UE, an indication to reduce a number of transmissions to the UE on the first access link; as well as In response to the indication, reducing the number of transmissions to the UE on the first access link; as well as A memory is coupled to the at least one processor.

26. The device according to claim 25, wherein The at least one processor is configured to receive the indication from the UE by directly receiving the indication from the UE.

27. The device according to claim 26, wherein The at least one processor is configured to receive the indication directly from the UE by receiving the indication using a signaling radio bearer established directly between the UE and the first base station.

28. The apparatus according to claim 25, wherein The at least one processor is configured to receive the indication from the UE by indirectly receiving the indication from the UE via a second base station.

29. The apparatus according to claim 28, wherein The indication is received from the second base station in a transparent container.

30. The apparatus of claim 25, wherein: The second base station comprises a master node MN; and The first base station includes a secondary node SN.

31. An apparatus for wireless communication by a user equipment (UE), comprising means for performing the method according to any one of claims 1-9.

32. An apparatus for wireless communication by a first base station BS, comprising means for performing the method according to any one of claims 10-15.

33. A non-transitory computer-readable medium having instructions stored thereon that, when executed by at least one processor, cause the at least one processor to perform the method of any one of claims 1-9.

34. A non-transitory computer-readable medium having instructions stored thereon that, when executed by at least one processor, cause the at least one processor to perform the method of any one of claims 10-15.

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