WO2020238127A1

WO2020238127A1 - Multi subscriber identity module user equipment, network node, and method for operating same

Info

Publication number: WO2020238127A1
Application number: PCT/CN2019/122633
Authority: WO
Inventors: Yongsheng Shi
Original assignee: Guangdong Oppo Mobile Telecommunications Corp., Ltd.
Priority date: 2019-05-31
Filing date: 2019-12-03
Publication date: 2020-12-03
Also published as: CN113906797A

Abstract

A multi subscriber identity module (SIM) user equipment (UE), a network node, and a method for operating same are provided. The multi SIM UE includes a first SIM and a second SIM. The method of operating the multi SIM UE includes determining a persistent paging collision between the first SIM and the second SIM, generating a desired paging monitoring configuration according to a determination of the persistent paging collision between the first SIM and the second SIM, and reporting, to a network node, the persistent paging collision between the first SIM and the second SIM and the desired paging monitoring configuration.

Description

MULTI SUBSCRIBER IDENTITY MODULE USER EQUIPMENT, NETWORK NODE, AND METHOD FOR OPERATING SAME

BACKGROUND OF DISCLOSURE

1. Field of Disclosure

The present disclosure relates to the field of communication systems, and more particularly, to a multi subscriber identity module (SIM) user equipment (UE) , a network node, and a method for operating same.

2. Description of Related Art

Wireless communication systems are rapidly growing in usage. Further, wireless communication technologies have evolved from voice-only communications to also include transmission of data, such as internet and multimedia content. In certain scenarios, a wireless device may include or be capable of utilizing multiple subscriber identity modules (SIMs) .

Multi SIM devices have been in market for several years. Most such devices have shared baseband, RF antennas, and other hardware components between two SIMs. 3GPP has not standardized this type of multi SIM UEs. Therefore, both networks and UEs suffered performance degradation when both SIMs independently operate in their own networks. A few examples are as follows:

1. When both SIMs are in idle mode, the both SIMs need to monitor their paging message on its own paging occasion (PO) . PO is calculated based on a UE identity (ID) . Since two SIMs are independent, it’s possible their calculated POs will collide to each other (on time domain) . It is note that UE IDs are fixed, therefore when the collision happens, it will be permanent. In this case, clearly one or both UEs may miss paging message from the network.

2. When one SIM is actively communicating with its network, e.g. the SIM is in a packet switched (PS) call, another SIM may need to perform system information reading, cell reselection, or other UE procedures. Due to shared hardware components, when a second SIM of the two SIMs performs one procedure, a first SIM of the two SIMs may lose communication to its network (e.g., a first network) . This type of behavior is tune-away. During a period of tune-away, the first network is not aware of the UE leaving the system. This may cause in-efficient scheduling behavior and server data throughput loss.

3. When both SIMs attempts to perform their own procedures, e.g. one SIM attempts to perform paging monitor and another SIM attempts to perform cell reselection. It’s not clear which service can get higher priority. In this example, one may easily argue that the SIM to do paging monitor is more important, but a counter argument would say paging message will be repeatedly sent by the network, therefore, cell reselection can get higher priority. As for today, priority handling is UE implementation dependent and the network does not have any control of it.

With increased complexity of 5G-capable UEs and with growing demand for multi SIM devices in the market, it becomes urgent to consider system enhancements that would allow for more cost-efficient implementations in such devices. Determining how to operate effectively and efficiently with multi SIM capability may be a challenging problem. Thus, improvements in the field are desired. Therefore, there is a need for a multi subscriber identity module (SIM) user equipment (UE) , a network node, and a method for operating same.

SUMMARY

An object of the present disclosure is to propose a multi subscriber identity module (SIM) user equipment (UE) , a network node, and a method for operating same capable of operating effectively and efficiently with multi SIM capability.

In a first aspect of the present disclosure, a multi SIM UE includes a first SIM associated with a first network, a second SIM associated with a second network, a memory, a transceiver configured to communicate with the first network using the first SIM and the second network using the second SIM, and a processor coupled to the memory, the transceiver, the first SIM, and the second SIM. The processor is configured to determine a persistent paging collision between the first SIM and the second SIM, generate a desired paging monitoring configuration according to a determination of the persistent paging collision between the first SIM and the second SIM, and control the transceiver to report, to a network node, the persistent paging collision between the first SIM and the second SIM and the desired paging monitoring configuration.

In a second aspect of the present disclosure, a method for operating a multi SIM UE is provided. The multi SIM UE includes a first SIM and a second SIM. The method includes determining a persistent paging collision between the first SIM and the second SIM, generating a desired paging monitoring configuration according to a determination of the persistent paging collision between the first SIM and the second SIM, and reporting, to a network node, the persistent paging collision between the first SIM and the second SIM and the desired paging monitoring configuration.

In a third aspect of the present disclosure, a network node includes a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to receive a persistent paging collision between a first subscriber identity module (SIM) and a second SIM of a SIM user equipment (UE) and a desired paging monitoring configuration from the multi SIM UE, and adjust a paging occasion (PO) of one of the first SIM and the second SIM according to the desired paging monitoring configuration.

In a fourth aspect of the present disclosure, a method for operating a network node is provided. The method includes receiving a persistent paging collision between a first subscriber identity module (SIM) and a second SIM of a multi SIM user equipment (UE) and a desired paging monitoring configuration from the multi SIM UE and adjusting a paging occasion (PO) of one of the first SIM and the second SIM according to the desired paging monitoring configuration.

BRIEF DESCRIPTION OF DRAWINGS

In order to more clearly illustrate the embodiments of the present disclosure or related art, the following figures will be described in the embodiments are briefly introduced. It is obvious that the drawings are merely some embodiments of the present disclosure, a person having ordinary skill in this field can obtain other figures according to these figures without paying the premise.

FIG. 1 is a block diagram of a multi subscriber identity module (SIM) user equipment (UE) and a network node in a communication network system according to an embodiment of the present disclosure.

FIG. 2 is a block diagram of a multi SIM UE and a network node according to an embodiment of the present disclosure.

FIG. 3 is a schematic diagram illustrating a persistent paging collision between a first SIM and a second SIM of a multi SIM UE according to an embodiment of the present disclosure.

FIG. 4 is a schematic diagram illustrating a different paging frame (PF) offset on one of a first SIM and a second SIM of a multi SIM UE according to an embodiment of the present disclosure.

FIG. 5 is a schematic diagram illustrating a different paging search space on one of a first SIM and a second SIM of a multi SIM UE according to an embodiment of the present disclosure.

FIG. 6 is a flowchart illustrating a method for operating a multi SIM UE according to an embodiment of the present disclosure.

FIG. 7 is a flowchart illustrating a method for operating a network node according to an embodiment of the present disclosure.

FIG. 8 is a block diagram of a system for wireless communication according to an embodiment of the present disclosure.

DETAILED DESCRIPTION OF EMBODIMENTS

Embodiments of the present disclosure are described in detail with the technical matters, structural features, achieved objects, and effects with reference to the accompanying drawings as follows. Specifically, the terminologies in the embodiments of the present disclosure are merely for describing the purpose of the certain embodiment, but not to limit the disclosure.

FIG. 1 illustrates that, in some embodiments, a multi subscriber identity module (SIM) user equipment (UE) 10 and a network node (such as a first network 20 and a second network 30) in a communication network system 1 according to an embodiment of the present disclosure are provided. The communication network system 1 includes the multi SIM UE 10, the first network 20, and the second network 30. The multi SIM UE 10 may include a first SIM 11 associated with the first network 20, a second SIM 12 associated with the second network 30, a memory 13, a transceiver 14 configured to communicate with the first network 20 using the first SIM 11 and the second network 30 using the second SIM 12, and a processor 15 coupled to the memory 13, the transceiver 14, the first SIM 11, and the second SIM 12.

FIG. 2 illustrates that, in some embodiments, a multi SIM UE 10 and a network node 40 according to an embodiment of the present disclosure. The network node 40 may include a processor 41, a memory 42 and a transceiver 43. The

processor

15 or 41 may be configured to implement proposed functions, procedures and/or methods described in this description. Layers of radio interface protocol may be implemented in the

processor

15 or 41. The

memory

13 or 42 is operatively coupled with the

processor

15 or 41 and stores a variety of information to operate the

processor

15 or 41. The

transceiver

14 or 43 is operatively coupled with the

processor

15 or 41, and the

transceiver

14 or 43 transmits and/or receives a radio signal.

The

processor

15 or 41 may include an application-specific integrated circuit (ASIC) , other chipsets, logic circuit and/or data processing devices. The

memory

13 or 42 may include a read-only memory (ROM) , a random access memory (RAM) , a flash memory, a memory card, a storage medium and/or other storage devices. The

transceiver

14 or 43 may include baseband circuitry to process radio frequency signals. When the embodiments are implemented in software, the techniques described herein can be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The modules can be stored in the

memory

13 or 42 and executed by the

processor

15 or 41. The

memory

13 or 42 can be implemented within the

processor

15 or 41 or external to the

processor

15 or 41, in which those can be communicatively coupled to the

processor

15 or 41 via various means are known in the art.

The communication between UEs relates to vehicle-to-everything (V2X) communication including vehicle-to-vehicle (V2V) , vehicle-to-pedestrian (V2P) , and vehicle-to-infrastructure/network (V2I/N) according to a sidelink technology developed under 3rd generation partnership project (3GPP)

release

14, 15, 16, 17, and beyond. UEs communicate with each other directly via a sidelink interface such as a PC5 interface.

In some embodiments, the processor 15 is configured to determine a persistent paging collision between the first SIM 11 and the second SIM 12, generate a desired paging monitoring configuration according to a determination of the persistent paging collision between the first SIM 11 and the second SIM 12, and control the transceiver 14 to report, to a network node 40, the persistent paging collision between the first SIM 11 and the second SIM 12 and the desired paging monitoring configuration

In some embodiments, the processor 41 is configured to receive a persistent paging collision between the first SIM 11 and the second SIM 12 and the desired paging monitoring configuration from the multi SIM UE 10, and adjust a paging occasion (PO) of one of the first SIM 11 and the second SIM 12 according to the desired paging monitoring configuration.

In some embodiments, the desired paging monitoring configuration includes a configuration of a different discontinuous reception (DRX) , a different paging cycle, a different paging frame (PF) offset, a different paging search space, and/or an offset applied on a UE identify (ID) on one of the first SIM and the second SIM.

In some embodiments, the processor 15 controls the transceiver 14 to report, to the network node 40, the persistent paging collision between the first SIM 11 and the second SIM 12 and the desired paging monitoring configuration when the processor 15 registers to the network node 40 and reports a UE capability of the multi SIM UE 10 to the network node 40.

In some embodiments, the processor 15 controls the transceiver 14 to report, to the network node 40, the persistent paging collision between the first SIM 11 and the second SIM 12 and the desired paging monitoring configuration when the processor 15 enters a new cell and detects a possible paging collision based on a paging configuration of the new cell.

In some embodiments, the processor 15 uses an offset applied to a UE ID on one of the first SIM 11 and the second SIM 12 when the processor 15 calculates paging occasions (POs) of the first SIM 11 and the second SIM 12.

In some embodiments, when the processor 15 detects the persistent paging collision between the first SIM 11 and the second SIM 12, one of the first SIM 11 and the second SIM 12 initiates a PO adjustment at one time.

In some embodiments, the processor 41 uses an offset applied to a UE ID on one of the first SIM 11 and the second SIM 12 when paging occasions (POs) of the first SIM 11 and the second SIM 12 are calculated.

In some embodiments, when the processor 41 is configured to change a PF offset, and/or a paging search space of a current cell to resolve the persistent paging collision between the first SIM 11 and the second SIM 12 of the SIM UE 10.

A UE (e.g., the multi SIM UE 10) may use discontinuous reception (DRX) in idle mode in order to reduce power consumption. One paging frame (PF) is one radio frame, which may contain one or multiple paging occasions. When DRX is used, the UE (e.g., the multi SIM UE 10) needs to monitor one PO per DRX cycle.

FIG. 3 illustrates that, in some embodiments, in multi-SIM devices, two SIMs periodic wake up to monitor their paging channels independently. The wake-up occasion is called paging occasion (PO) . In NR, PO is calculated as the below table 1.

Table 1

In LTE, PO is calculated in a similar way. As illustrated in the below table 2.

Table 2

In summary, the UE wakes up on its own PO, determined by UE_ID, every DRX cycle to monitor page. Since two SIMs in the device are independent, their UE_ID (5G-S-TMSI in 5G and IMSI in LTE) may result in the same calculated PO. When this situation happens, UE has no way to request a different PO because UE_ID has been fixed. One collision scenario is illustrated in FIG. 3.

Some embodiments give a few solutions to avoid or alleviate persistent paging collision in multi-SIM devices.

FIG. 4 illustrates that, in some embodiments, a UE (e.g., the multi SIM UE 10) reports a persistent paging collision issue and provides a desired paging monitoring configuration to a network (e.g., the network node 40) . When the UE has persistent paging collision issue, it requires network to change paging monitoring configuration to resolve the issue. The reported desired configuration may help network to adjust PO.

In some embodiments, the configuration can include using a different UE specific DRX and/or paging cycle. In some cases, paging cycle of the two SIMs are same. When persistent paging collision happens, every PO will collide. By changing one SIM’s paging cycle, paging collision may happen once every 2 or 4 paging cycles. For example, both SIM1 (e.g., the first SIM 11) and SIM2 (e.g., the second SIM 12) have 1.28 second paging cycle initially. When SIM1 changes to 640ms cycle and SIM2 changes to 2.56s, every 4 cycles, there will be one collision.

In some embodiments, the configuration can include using a different PF_offset. From paging SFN calculation: (SFN + PF_offset) mod T = (T div N) * (UE_ID mod N) . If PF_offset changes, paging SFN will shift to another location on time domain. This may resolve paging collision, as illustrated in FIG. 4.

In new radio (NR) , PO can also be determined by paging search space. The search space denotes a time domain location where the UE can monitor its paging.

Please see the description in TS 38.304 (as illustrated in the below table 3) .

Table 3

FIG. 5 illustrates that, in some embodiments, by using a different paging search space, the UE (e.g., the multi SIM UE 10) will move to a different location on time domain to monitor paging. This may resolve paging collision.

In some embodiments, an offset is applied on UE_ID. The network (e.g., the network node 40) and the UE (e.g., the multi SIM UE 10) can agree on an offset value applied on UE_ID when calculating PO. When UE_ID changes, PO will be shifted to another location on time domain.

In some embodiments, the paging collision reporting can be done in the following scenarios. When the UE (e.g., the multi SIM UE 10) registers to the network (e.g., the network node 40) and reports UE capability. When the UE enters a new cell and detects possible paging collision based on the cell’s paging configuration.

In some embodiments, the network can change PF_offset and/or paging search space of the current cell to resolve paging collision issue.

In some embodiments, the network and the UE use an offset applied to UE_ID when calculating the UE’s PO.

In some embodiments, when two SIMs (e.g., the first SIM 11 and the second SIM 12) detect persistent paging collision, one SIM initiates PO adjustment at one time. The embodiment is to not let both SIMs perform PO adjustments. When one SIM changes its paging cycle or switches to another paging system frame number (SFN) or PO, persistent paging collision can be resolved. If one SIM cannot change its PO successfully, another SIM will attempt to change PO.

FIG. 6 illustrates a method 200 for operating a multi SIM UE according to an embodiment of the present disclosure. The multi SIM UE includes a first SIM and a second SIM. The method 200 includes: a block 202, determining a persistent paging collision between the first SIM and the second SIM, a block 204, generating a desired paging monitoring configuration according to a determination of the persistent paging collision between the first SIM and the second SIM, and a block 206, reporting, to a network node, the persistent paging collision between the first SIM and the second SIM and the desired paging monitoring configuration.

FIG. 7 illustrates a method 300 for operating a network node according to an embodiment of the present disclosure. The method 300 includes: a block 302, receiving a persistent paging collision between a first subscriber identity module (SIM) and a second SIM of a multi SIM user equipment (UE) and a desired paging monitoring configuration from the multi SIM UE and a block 304, adjusting a paging occasion (PO) of one of the first SIM and the second SIM according to the desired paging monitoring configuration.

FIG. 8 is a block diagram of an example system 700 for wireless communication according to an embodiment of the present disclosure. Embodiments described herein may be implemented into the system using any suitably configured hardware and/or software. FIG. 8 illustrates the system 700 including a radio frequency (RF) circuitry 710, a baseband circuitry 720, an application circuitry 730, a memory/storage 740, a display 750, a camera 760, a sensor 770, and an input/output (I/O) interface 780, coupled with each other at least as illustrated.

The application circuitry 730 may include a circuitry, such as, but not limited to, one or more single-core or multi-core processors. The processors may include any combinations of general-purpose processors and dedicated processors, such as graphics processors and application processors. The processors may be coupled with the memory/storage and configured to execute instructions stored in the memory/storage to enable various applications and/or operating systems running on the system.

The baseband circuitry 720 may include a circuitry, such as, but not limited to, one or more single-core or multi-core processors. The processors may include a baseband processor. The baseband circuitry may handle various radio control functions that enable communication with one or more radio networks via the RF circuitry. The radio control functions may include, but are not limited to, signal modulation, encoding, decoding, radio frequency shifting, etc. In some embodiments, the baseband circuitry may provide for communication compatible with one or more radio technologies. For example, in some embodiments, the baseband circuitry may support communication with an evolved universal terrestrial radio access network (EUTRAN) and/or other wireless metropolitan area networks (WMAN) , a wireless local area network (WLAN) , a wireless personal area network (WPAN) . Embodiments in which the baseband circuitry is configured to support radio communications of more than one wireless protocol may be referred to as multi-mode baseband circuitry.

In various embodiments, the baseband circuitry 720 may include circuitry to operate with signals that are not strictly considered as being in a baseband frequency. For example, in some embodiments, baseband circuitry may include circuitry to operate with signals having an intermediate frequency, which is between a baseband frequency and a radio frequency.

The RF circuitry 710 may enable communication with wireless networks using modulated electromagnetic radiation through a non-solid medium. In various embodiments, the RF circuitry may include switches, filters, amplifiers, etc. to facilitate the communication with the wireless network.

In various embodiments, the RF circuitry 710 may include circuitry to operate with signals that are not strictly considered as being in a radio frequency. For example, in some embodiments, RF circuitry may include circuitry to operate with signals having an intermediate frequency, which is between a baseband frequency and a radio frequency.

In various embodiments, the transmitter circuitry, control circuitry, or receiver circuitry discussed above with respect to the user equipment, eNB, or gNB may be embodied in whole or in part in one or more of the RF circuitry, the baseband circuitry, and/or the application circuitry. As used herein, “circuitry” may refer to, be part of, or include an Application Specific Integrated Circuit (ASIC) , an electronic circuit, a processor (shared, dedicated, or group) , and/or a memory (shared, dedicated, or group) that execute one or more software or firmware programs, a combinational logic circuit, and/or other suitable hardware components that provide the described functionality. In some embodiments, the electronic device circuitry may be implemented in, or functions associated with the circuitry may be implemented by, one or more software or firmware modules.

In some embodiments, some or all of the constituent components of the baseband circuitry, the application circuitry, and/or the memory/storage may be implemented together on a system on a chip (SOC) .

The memory/storage 740 may be used to load and store data and/or instructions, for example, for system. The memory/storage for one embodiment may include any combination of suitable volatile memory, such as dynamic random access memory (DRAM) ) , and/or non-volatile memory, such as flash memory.

In various embodiments, the I/O interface 780 may include one or more user interfaces designed to enable user interaction with the system and/or peripheral component interfaces designed to enable peripheral component interaction with the system. User interfaces may include, but are not limited to a physical keyboard or keypad, a touchpad, a speaker, a microphone, etc. Peripheral component interfaces may include, but are not limited to, a non-volatile memory port, a universal serial bus (USB) port, an audio jack, and a power supply interface.

In various embodiments, the sensor 770 may include one or more sensing devices to determine environmental conditions and/or location information related to the system. In some embodiments, the sensors may include, but are not limited to, a gyro sensor, an accelerometer, a proximity sensor, an ambient light sensor, and a positioning unit. The positioning unit may also be part of, or interact with, the baseband circuitry and/or RF circuitry to communicate with components of a positioning network, e.g., a global positioning system (GPS) satellite.

In various embodiments, the display 750 may include a display, such as a liquid crystal display and a touch screen display. In various embodiments, the system 700 may be a mobile computing device such as, but not limited to, a laptop computing device, a tablet computing device, a netbook, an ultrabook, a smartphone, etc. In various embodiments, system may have more or less components, and/or different architectures. Where appropriate, methods described herein may be implemented as a computer program. The computer program may be stored on a storage medium, such as a non-transitory storage medium.

In the embodiment of the present disclosure, a multi subscriber identity module (SIM) user equipment (UE) , a network node, and a method for operating same capable of operating effectively and efficiently with multi SIM capability are provided. The embodiment of the present disclosure is a combination of techniques/processes that can be adopted in 3GPP specification to create an end product.

A person having ordinary skill in the art understands that each of the units, algorithm, and steps described and disclosed in the embodiments of the present disclosure are realized using electronic hardware or combinations of software for computers and electronic hardware. Whether the functions run in hardware or software depends on the condition of application and design requirement for a technical plan.

A person having ordinary skill in the art can use different ways to realize the function for each specific application while such realizations should not go beyond the scope of the present disclosure. It is understood by a person having ordinary skill in the art that he/she can refer to the working processes of the system, device, and unit in the above-mentioned embodiment since the working processes of the above-mentioned system, device, and unit are basically the same. For easy description and simplicity, these working processes will not be detailed.

It is understood that the disclosed system, device, and method in the embodiments of the present disclosure can be realized with other ways. The above-mentioned embodiments are exemplary only. The division of the units is merely based on logical functions while other divisions exist in realization. It is possible that a plurality of units or components are combined or integrated in another system. It is also possible that some characteristics are omitted or skipped. On the other hand, the displayed or discussed mutual coupling, direct coupling, or communicative coupling operate through some ports, devices, or units whether indirectly or communicatively by ways of electrical, mechanical, or other kinds of forms.

The units as separating components for explanation are or are not physically separated. The units for display are or are not physical units, that is, located in one place or distributed on a plurality of network units. Some or all of the units are used according to the purposes of the embodiments. Moreover, each of the functional units in each of the embodiments can be integrated in one processing unit, physically independent, or integrated in one processing unit with two or more than two units.

If the software function unit is realized and used and sold as a product, it can be stored in a readable storage medium in a computer. Based on this understanding, the technical plan proposed by the present disclosure can be essentially or partially realized as the form of a software product. Or, one part of the technical plan beneficial to the conventional technology can be realized as the form of a software product. The software product in the computer is stored in a storage medium, including a plurality of commands for a computational device (such as a personal computer, a server, or a network device) to run all or some of the steps disclosed by the embodiments of the present disclosure. The storage medium includes a USB disk, a mobile hard disk, a read-only memory (ROM) , a random access memory (RAM) , a floppy disk, or other kinds of media capable of storing program codes.

While the present disclosure has been described in connection with what is considered the most practical and preferred embodiments, it is understood that the present disclosure is not limited to the disclosed embodiments but is intended to cover various arrangements made without departing from the scope of the broadest interpretation of the appended claims.

Claims

A multi subscriber identity module (SIM) user equipment (UE) , comprising:

a first SIM associated with a first network;

a second SIM associated with a second network;

a memory;

a transceiver configured to communicate with the first network using the first SIM and the second network using the second SIM; and

a processor coupled to the memory, the transceiver, the first SIM, and the second SIM; wherein the processor is configured to:

determine a persistent paging collision between the first SIM and the second SIM;

generate a desired paging monitoring configuration according to a determination of the persistent paging collision between the first SIM and the second SIM; and

control the transceiver to report, to a network node, the persistent paging collision between the first SIM and the second SIM and the desired paging monitoring configuration.
The multi SIM UE of claim 1, wherein the desired paging monitoring configuration comprises a configuration of a different discontinuous reception (DRX) , a different paging cycle, a different paging frame (PF) offset, a different paging search space, and/or an offset applied on a UE identify (ID) on one of the first SIM and the second SIM.
The multi SIM UE of claim 1, wherein the processor controls the transceiver to report, to the network node, the persistent paging collision between the first SIM and the second SIM and the desired paging monitoring configuration when the processor registers to the network node and reports a UE capability of the multi SIM UE to the network node.
The multi SIM UE of claim 1, wherein the processor controls the transceiver to report, to the network node, the persistent paging collision between the first SIM and the second SIM and the desired paging monitoring configuration when the processor enters a new cell and detects a possible paging collision based on a paging configuration of the new cell.
The multi SIM UE of claim 1, wherein the processor uses an offset applied to a UE ID on one of the first SIM and the second SIM when the processor calculates paging occasions (POs) of the first SIM and the second SIM.
The multi SIM UE of claim 1, wherein when the processor detects the persistent paging collision between the first SIM and the second SIM, one of the first SIM and the second SIM initiates a PO adjustment at one time.
A method for operating a multi subscriber identity module (SIM) user equipment (UE) comprising a first SIM and a second SIM, the method comprising:

determining a persistent paging collision between the first SIM and the second SIM;

generating a desired paging monitoring configuration according to a determination of the persistent paging collision between the first SIM and the second SIM; and

reporting, to a network node, the persistent paging collision between the first SIM and the second SIM and the desired paging monitoring configuration.
The method of claim 7, wherein the desired paging monitoring configuration comprises a configuration of a different discontinuous reception (DRX) , a different paging cycle, a different paging frame (PF) offset, a different paging search space, and/or an offset applied on a UE identify (ID) on one of the first SIM and the second SIM.
The method of claim 7, wherein the processor controls the transceiver to report, to the network node, the persistent paging collision between the first SIM and the second SIM and the desired paging monitoring configuration when the processor registers to the network node and reports a UE capability of the multi SIM UE to the network node.
The method of claim 7, wherein the multi SIM UE reports, to the network node, the persistent paging collision between the first SIM and the second SIM and the desired paging monitoring configuration when the multi SIM UE enters a new cell and detects a possible paging collision based on a paging configuration of the new cell.
The method of claim 7, further comprising using an offset applied to a UE ID on one of the first SIM and the second SIM when the multi SIM UE calculates paging occasions (POs) of the first SIM and the second SIM.
The method of claim 7, wherein the multi SIM UE detects the persistent paging collision between the first SIM and the second SIM, one of the first SIM and the second SIM initiates a PO adjustment at one time.
A network node, comprising:

a memory;

a transceiver; and

a processor coupled to the memory and the transceiver;

wherein the processor is configured to:

receive a persistent paging collision between a first subscriber identity module (SIM) and a second SIM of a SIM user equipment (UE) and a desired paging monitoring configuration from the multi SIM UE; and

adjust a paging occasion (PO) of one of the first SIM and the second SIM according to the desired paging monitoring configuration.
The network node of claim 13, wherein the desired paging monitoring configuration comprises a configuration of a different discontinuous reception (DRX) , a different paging cycle, a different paging frame (PF) offset, a different paging search space, and/or an offset applied on a UE identify (ID) on one of the first SIM and the second SIM.
The network node of claim 13, wherein the network node receives the persistent paging collision between the first SIM and the second SIM and the desired paging monitoring configuration from the multi SIM UE when the network node receives a registration and a UE capability of the multi SIM UE from the multi SIM UE.
The network node of claim 13, wherein the network node receives the persistent paging collision between the first SIM and the second SIM and the desired paging monitoring configuration from the multi SIM UE when the multi SIM UE enters a new cell and detects a possible paging collision based on a paging configuration of the new cell.
The network node of claim 13, wherein the processor uses an offset applied to a UE ID on one of the first SIM and the second SIM when paging occasions (POs) of the first SIM and the second SIM are calculated.
The network node of claim 13, wherein when the processor is configured to change a PF offset, and/or a paging search space of a current cell to resolve the persistent paging collision between the first SIM and the second SIM of the SIM UE.
A method for operating a network node, comprising:

receiving a persistent paging collision between a first subscriber identity module (SIM) and a second SIM of a multi SIM user equipment (UE) and a desired paging monitoring configuration from the multi SIM UE; and

adjusting a paging occasion (PO) of one of the first SIM and the second SIM according to the desired paging monitoring configuration.
The method of claim 19, wherein the desired paging monitoring configuration comprises a configuration of a different discontinuous reception (DRX) , a different paging cycle, a different paging frame (PF) offset, a different paging search space, and/or an offset applied on a UE identify (ID) on one of the first SIM and the second SIM.