WO2021114010A1

WO2021114010A1 - Systems and methods for wireless communication

Info

Publication number: WO2021114010A1
Application number: PCT/CN2019/123934
Authority: WO
Inventors: Jun Deng; Rishika TINDOLA; Ling Xie; Hewu GU
Original assignee: Qualcomm Incorporated
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2021-06-17

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may be configured to communicate using a first subscription and communicate using a different second subscription. The user equipment may receive a closed subscriber group (CSG) whitelist for the different second subscription, which may comprise a closed subscriber group (CSG) identity. The user equipment may be configured to perform, via the different second subscription, a reselection to a closed subscriber group (CSG) member cell associated with the CSG identity using at least one of one or more signal measurements, which were obtained by performing at least one autonomous search function via the first subscription, or one or more portions of one or more system information messages, which were obtained by performing at least one autonomous search function via the first subscription.

Description

SYSTEMS AND METHODS FOR WIRELESS COMMUNICATION

BACKGROUND

The present disclosure relates generally to communication systems, and more particularly, to wireless communication by a multi-subscriber identity module device.

Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources, e.g., time, frequency, and power. Examples of such multiple-access systems include code division multiple access (CDMA) systems, e.g., Wideband Code Division Multiple Access (WCDMA) systems; time division multiple access (TDMA) systems; frequency division multiple access (FDMA) systems; and orthogonal frequency division multiple access (OFDMA) systems, e.g., a Long Term Evolution (LTE) system or a New Radio (NR) system. A wireless multiple-access communications system may include a number of base stations or access network nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE) .

These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR) . 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT) ) , and other requirements. Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There exists a need for further improvements in LTE technology and/or 5G NR technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies.

SUMMARY

One aspect is a method for wireless communication by a user equipment configured to communicate using a first subscription and communicate using a different second subscription. The method may comprise receiving a first closed subscriber group (CSG) whitelist for the first subscription, the first CSG whitelist for the first subscription comprising a first closed subscriber group (CSG) identity and one or more public land mobile network (PLMN) identities (IDs) associated with the first CSG identity; receiving a second closed subscriber group (CSG) whitelist for the different second subscription, the second CSG whitelist for the different second subscription comprising a second closed subscriber group (CSG) identity and one or more public land mobile network (PLMN) identities (IDs) associated with the second CSG identity; via the first subscription, obtaining one or more signal measurements or one or more system information messages; and via the different second subscription, performing a reselection to a closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of the one or more signal measurements, which were obtained via the first subscription, or one or more portions of the one or more system information messages, which were obtained via the first subscription.

Another aspect is a method for wireless communication by a user equipment configured to communicate using a first subscription and communicate using a different second subscription. The method may comprise receiving a first closed subscriber group (CSG) whitelist for the first subscription, the first CSG whitelist for the first subscription comprising a first closed subscriber group (CSG) identity and one or more public land mobile network (PLMN) identities (IDs) associated with the first CSG identity; receiving a second closed subscriber group (CSG) whitelist for the different second subscription, the second CSG whitelist for the different second subscription comprising a second closed subscriber group (CSG) identity and one or more public land mobile network (PLMN) identities (IDs) associated with the second CSG identity; performing at least one autonomous search function via the first subscription to obtain one or more signal measurements or one or more system information messages; and via the different second subscription, performing a reselection to a closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of the one or more signal measurements, which were obtained by performing the at least one autonomous search function via the first subscription, or one or more portions of the one or more system information messages, which were obtained by performing the at least one autonomous search function via the first subscription.

Further embodiments include an apparatus (e.g., a user equipment, a multi-SIM user equipment, or any other apparatus) that may comprise one or more processors configured with processor-executable instructions to perform operations of the methods and aspects summarized above, one or more other aspects described below, or any combination thereof. Further embodiments include an apparatus (e.g., a user equipment, a multi-SIM user equipment, or any other apparatus) that may comprise means for performing functions of the methods and aspects summarized above, one or more other aspects described below, or any combination thereof. Further embodiments include a non-transitory processor-readable storage medium having stored thereon processor-executable instructions configured to cause one or more processors (e.g., one or more processors of a user equipment, one or more processors of a multi-SIM user equipment, or one or more other processors) to perform operations of the methods and aspects summarized above, one or more other aspects described below, or any combination thereof. Further embodiments include a method that may include operations of the methods and aspects summarized above, one or more other aspects described below, or any combination thereof.

For purposes of summarizing, some aspects, advantages and features of a few of the embodiments of the invention have been described in this summary. Some embodiments of the invention may include some or all of these summarized aspects, advantages and features. However, not necessarily all of (or any of) these summarized aspects, advantages or features will be embodied in any particular embodiment of the invention. Thus, none of these summarized aspects, advantages and features are essential. Some of these summarized aspects, advantages and features and other aspects, advantages and features may become more fully apparent from the following detailed description and the appended claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The appended drawings contain figures of preferred embodiments to further clarify the above and other aspects, advantages and features. It will be appreciated that these drawings depict only preferred embodiments of the invention and are not intended to limit its scope. These preferred embodiments will be described and explained with additional specificity and detail through the use of the accompanying drawings in which:

Figure 1 is a diagram of a communication system according to some embodiments;

Figure 2 is a flowchart illustrating a method for wireless communication according to some embodiments;

Figure 3 is a flowchart illustrating a method for wireless communication according to some embodiments;

Figure 4 is a flowchart illustrating a method for wireless communication according to some embodiments; and

Figure 5 is a diagram illustrating a user equipment according to some embodiments.

DETAILED DESCRIPTION

In some wireless communication systems, a user equipment may perform an autonomous search function (ASF) to find a closed subscriber group (CSG) member cell associated with a closed subscriber group (CSG) identity of a closed subscriber group (CSG) whitelist for a subscription. Examples of such autonomous search functions are disclosed in 3GPP TS 36.133 V15.8.0 (2019-09) ; 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA) ; Requirements for support of radio resource management (Release 15) , the disclosure of which is incorporated by reference herein in its entirety.

Applicants have observed that, in some instances, a user equipment may (1) perform one autonomous search function to find a closed subscriber group member cell associated with a closed subscriber group identity of one closed subscriber group whitelist for one subscription and (2) perform another autonomous search function to find a closed subscriber group member cell associated with a closed subscriber group identity of another closed subscriber group whitelist for another subscription. Applicants have observed that performing all or a portion of the other autonomous search function for another subscription may be unnecessary when, for example, the both subscriptions maintained by the same wireless carrier or mobile network operator. Accordingly, Applicants have observed that performing all or a portion of the other autonomous search function may waste power and reduce the battery life of the user equipment, which may degrade user equipment performance and may degrade user experience. Aspects disclosed herein may advantageously help reduce or eliminate this problem, may provide one or more other advantages, or both.

As shown in Figure 1, a communication system 100 may include one or more user equipment (UE) 102. The user equipment 102 may communicate using one or more wireless communication systems (such as, CDMA systems, WCDMA systems, TDMA systems, OFDMA systems, LTE systems, NR systems, WiFi systems, Bluetooth systems, or any wireless communication systems) , one or more wired communication systems, or any combination thereof.

The communication system 100 may include one or more networks, such as a first network 104 and a second network 106. The first network 104 may form at least part of a first wireless communication system, and the second network 106 may form part of at least part of a second wireless communication system. The first and second

wireless communication systems

104, 106 may support the same wireless standard (e.g., both support the same CDMA, WCDMA, TDMA, OFDMA, LTE, NR, or WiFi standard) or may employ wireless standards that are different from each other.

In some embodiments, the second network 106 may be a network that is separate and distinct from the first network 104, and the second wireless communication system may be a wireless communication system that is separate and distinct from the first wireless communication system.

However, in other embodiments, the second network 106 may be the first network 104, and the second wireless communication system may be the first wireless communication system, that is, the first and

second networks

104, 106 may be the same network (e.g., maintained by the same wireless carrier or mobile network operator) , and the first and second wireless communication systems may be the same wireless communication system (e.g., maintained by the same wireless carrier or mobile network operator) .

The user equipment 102 may be a multi-subscriber identity module (multi-SIM) user equipment, such as a dual-SIM, dual-standby (DSDS) user equipment or a dual-SIM, dual-active (DSDA) user equipment. The user equipment 102 may be configured to use a first wireless communication link 108 to communicate with the first network 104 via a first subscription and use a different second wireless communication link 110 to communicate with the second network 106 via a different second subscription. The user equipment 102 may receive voice services, data services or both using the first wireless communication link 108 with the first network 104 via the first subscription. The user equipment may receive voice services, data services or both using the different second wireless communication link 110 with the second network 106 via the different second subscription. In some instances, the first subscription and the different second subscription may be maintained by different wireless carriers or mobile network operators. In some instances, the first subscription and the different second subscription may be maintained by the same wireless carrier or mobile network operator.

Figure 2 is a flowchart illustrating a method 200 for wireless communication (e.g., by a user equipment configured to communicate using the first subscription and communicate using the different second subscription) according to some embodiments, which may be performed by one or more processors of a user equipment --such as one or more processors 112 (Figure 1) that may be configured with reselection logic 114 which performs the method 200, performs other functionality (including other functionality described herein) , or performs any combination thereof. As shown in Figure 2, the method 200 may include one or more blocks, such as block 202, block 204, block 206, optional block 208, optional block 210, block 212, or any combination thereof.

In some embodiments, the processor may perform block 202, block 204, block 206, optional block 208, optional block 210, block 212, or any combination thereof using a first subscription reselection module 116a of the reselection logic 114 (Figure 1) , a second subscription reselection module 116b (Figure 1) , or both. For example, the processor may perform block 202, block 206, optional block 208, optional block 210, or any combination thereof using the first subscription reselection module 116a, and the processor may perform block 204, block 212, or any combination thereof using the second subscription reselection module 116b (Figure 1) .

At block 202, the processor may receive a first closed subscriber group (CSG) whitelist for the first subscription, the first CSG whitelist for the first subscription comprising a first closed subscriber group (CSG) identity and one or more public land mobile network (PLMN) identities (IDs) associated with the first CSG identity.

At block 204, the processor may receive a second closed subscriber group (CSG) whitelist for the different second subscription, the second CSG whitelist for the different second subscription comprising a second closed subscriber group (CSG) identity and one or more public land mobile network (PLMN) identities (IDs) associated with the second CSG identity.

At block 206, the processor may obtain one or more signal measurements via the first subscription, obtain one or more system information messages via the first subscription, or both. In some embodiments, the one or more signal measurements, the one or more system information, or both may be obtained from at least one autonomous search function (ASF) performed via the first subscription. In some embodiments, the one or more system information messages, which were obtained via the first subscription, comprise at least one of one or more system information blocks (SIBs) or one or more master information blocks (MIBs) . In some embodiments, the one or more signal measurements, which were obtained via the first subscription, comprise at least one of one or more signal strength measurements or one or more signal quality measurements. In some embodiments, the processor may perform at least one autonomous search function via the first subscription to obtain the one or more signal measurements, the one or more system information messages, or both.

At optional block 208, the processor may, via the first subscription, perform a reselection to a closed subscriber group (CSG) member cell associated with the first CSG identity using at least one of (1) the one or more signal measurements, which were obtained via the first subscription, or (2) one or more portions of the one or more system information messages, which were obtained via the first subscription.

At optional block 210, the processor may perform a tuneaway from the first subscription to the different second subscription.

At block 212, the processor may, via the different second subscription, perform a reselection to a closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of (1) the one or more signal measurements, which were obtained via the first subscription, or (2) one or more portions of the one or more system information messages, which were obtained via the first subscription. In some embodiments, the one or more portions of the one or more system information messages, which were obtained via the first subscription, may comprise a list of one or more previously visited CSG member cells, which the user equipment visited via the first subscription.

Significantly, by using signal measurements obtained via the first subscription or portions of the one or more system information messages obtained via the first subscription to perform the reselection at block 212, the processor may refrain from (1) obtaining one or more signal measurements via the different second subscription or (2) obtaining one or more system information messages via the different second subscription. Thus, the processor may refrain from expending power to (1) obtain one or more signal measurements via the different second subscription or (2) obtain one or more system information messages via the different second subscription. Refraining from expending this power may improve battery life, which may improve user equipment performance and may improve user experience.

As shown in Figure 3, block 206 (Figure 2) may include one or more blocks, such as, optional block 302, optional block 304, optional block 306, optional block 306, and optional block 306, which may be performed by one or more processors of a user equipment --such as one or more processors 112 (Figure 1) such as one or more processors 112 (Figure 1) that may be configured with reselection logic 114 which performs one or more of these blocks, performs other functionality (including other functionality described herein) , or performs any combination thereof.

As also shown in Figure 3, block 212 (Figure 2) may include one or more blocks, such as, optional block 312, which may be performed by one or more processors of a user equipment --such as one or more processors 112 (Figure 1) such as one or more processors 112 (Figure 1) that may be configured with reselection logic 114 which performs one or more of these blocks, performs other functionality (including other functionality described herein) , or performs any combination thereof.

In some embodiments, the processor may perform one or more autonomous search functions (ASFs) via the first subscription, which may include obtaining a first set of one or more system information messages (optional block 302) and obtaining a first set of one or more signal measurements (optional block 306) .

The processor may store the results of the one or more autonomous search functions (ASFs) performed via the first subscription. For example, the processor may store, in a closed subscriber group (CSG) member cell fingerprinting database, (1) one or more portions of the first set of one or more system information messages at optional block 304; (2) the first set of one or more signal measurements at optional block 308; (3) other results of the one or more autonomous search functions (ASFs) performed via the first subscription, or any combination thereof. In some embodiments, the one or more portions of the first set of one or more system information messages, which are stored in the closed subscriber group (CSG) member cell fingerprinting database, may comprise a list of one or more previously visited CSG member cells, which the user equipment visited via the first subscription.

In addition to performing the one or more autonomous search functions (ASFs) via the first subscription whose results may be stored in the closed subscriber group (CSG) member cell fingerprinting database, the processor may perform one or more additional autonomous search functions (ASFs) via the first subscription. For example, at optional block 310, the processor may, via the first subscription, perform an autonomous search function including at least one of obtaining a second set of one or more signal measurements or obtaining a second set of one or more system information messages.

The processor may perform a reselection via the different second subscription using the results of the one or more autonomous search functions (ASFs) performed via the first subscription stored in the closed subscriber group (CSG) member cell fingerprinting database, the results of the one or more additional autonomous search functions (ASFs) via the first subscription, or both. In particular, at optional block 312, the processor may, via the different second subscription, perform a reselection to a closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of (1) the one or more portions of the first set of one or more system information messages obtained via the first subscription at optional block 302 and stored in the CSG member cell fingerprinting database at optional block 304, (2) the first set of one or more signal measurements obtained via the first subscription at optional block 306 and stored in the CSG member cell fingerprinting database at optional block 308, (3) the second set of one or more signal measurements obtained from the autonomous search function performed via the first subscription at optional block 310, or (4) one or more portions of the second set of one or more system information messages obtained from the autonomous search function performed via the first subscription at optional block 310.

Significantly, by performing a reselection via the different second subscription using the results of autonomous search functions (ASFs) performed via the first subscription, the processor may refrain from performing all or a portion of an autonomous search function via the different second subscription, e.g., refrain from (1) obtaining one or more signal measurements via the different second subscription or (2) obtaining one or more system information messages via the different second subscription. Thus, the processor may refrain from expending power to (1) obtain one or more signal measurements via the different second subscription or (2) obtain one or more system information messages via the different second subscription. Refraining from expending this power may improve battery life, which may improve user equipment performance and may improve user experience.

In some embodiments, in which the processor performs

optional blocks

302, 304, 306, and 308 (Figure 3) using the first subscription reselection module 116a (Figure 1) and the processor performs optional block 312 (Figure 3) using the second subscription reselection module 116b (Figure 1) , the first subscription reselection module 116a may provide all or a portion of the closed subscriber group (CSG) member cell fingerprinting database to the second subscription reselection module 116b, which the second subscription reselection module 116b may use to perform the reselection at optional block 312.

As shown in Figure 4, block 206 (Figure 2) may include one or more blocks, such as, optional block 402, optional block 404, optional block 406, optional block and 408, which may be performed by one or more processors of a user equipment --such as one or more processors 112 (Figure 1) such as one or more processors 112 (Figure 1) that may be configured with reselection logic 114 which performs one or more of these blocks, performs other functionality (including other functionality described herein) , or performs any combination thereof.

As also shown in Figure 4, block 212 (Figure 2) may include one or more blocks, such as, optional block 410, which may be performed by one or more processors of a user equipment --such as one or more processors 112 (Figure 1) such as one or more processors 112 (Figure 1) that may be configured with reselection logic 114 which performs one or more of these blocks, performs other functionality (including other functionality described herein) , or performs any combination thereof.

In some embodiments, the processor may perform one or more autonomous search functions (ASFs) via the first subscription, which may include obtaining a plurality of signal measurements (optional block 402) and obtaining a plurality of system information messages (optional block 306) .

The processor may prune the results of the one or more autonomous search functions (ASFs) performed via the first subscription. For example, the processor may prune (1) at least one signal measurement from the plurality of signal measurements to obtain a pruned set of one or more signal measurements at optional block 404; (2) at least one system information message from the plurality of system information messages to obtain a pruned set of one or more system information messages at optional block 408.

The processor may perform a reselection via the different second subscription using the pruned results of the one or more autonomous search functions (ASFs) performed via the first subscription. For example, at block 410, the processor may, via the different second subscription, perform a reselection to a closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of (1) the pruned set of one or more signal measurements obtained via the first subscription, or (2) one or more portions of the pruned set of one or more system information messages obtained via the first subscription.

In some embodiments, in which the processor performs

optional blocks

402, 404, 406, and 408 (Figure 4) using the first subscription reselection module 116a (Figure 1) and the processor performs optional block 410 (Figure 4) using the second subscription reselection module 116b (Figure 1) , the first subscription reselection module 116a may provide a pruned version of the closed subscriber group (CSG) member cell fingerprinting database to the second subscription reselection module 116b, which the second subscription reselection module 116b may use to perform the reselection at optional block 410.

Significantly, if the first subscription reselection module 116a prunes the results of autonomous search functions (ASFs) performed via the first subscription to omit results that are irrelevant to the different second subscription, the second subscription reselection module 116b may perform the reselection without expending power attempting to reselect to irrelevant closed subscriber group (CSG) member cells.

Various embodiments (including, but not limited to, embodiments discussed above with reference to Figures 1-4) may be implemented in any user equipment, one example of which is illustrated in Figure 5. For example, the user equipment 500 may include one or more processors 502 coupled to a touch screen controller and one or more internal memory 504. The processor 502 may be one or more multicore integrated circuits designated for general or specific processing tasks. The internal memory 504 may be volatile or non-volatile memory, and may also be secure and/or encrypted memory, or unsecure and/or unencrypted memory, or any combination thereof. The touch screen controller and the processor 502 may also be coupled to a touch screen panel, such as a resistive-sensing touch screen, capacitive-sensing touch screen, infrared sensing touch screen, etc. The user equipment 500 may have one or more radio signal transceivers 506 (e.g.,

Wi-Fi, RF, cellular, etc. ) and antennae, for sending and receiving, coupled to each other and/or to the processor 502. The transceiver 506 and antennae may be used with the above-mentioned circuitry to implement the various wireless transmission protocol stacks and interfaces. The user equipment 500 may include one or more cellular network wireless modems 508 that enable communication via one or more cellular networks and that are coupled to the processor.

The user equipment 500 may include a peripheral device connection interface coupled to the processor 502. The peripheral device connection interface may be singularly configured to accept one type of connection, or multiply configured to accept various types of physical and communication connections, common or proprietary, such as USB, FireWire, Thunderbolt, Ethernet, or PCIe. The peripheral device connection interface may also be coupled to a similarly configured peripheral device connection port. The user equipment 500 may also include speakers for providing audio outputs.

The user equipment 500 may also include a housing --which may be constructed of plastic, metal, one or more other materials, or a combination of thereof --for containing all or some of the components discussed herein. The user equipment 500 may include a power source coupled to the processor 502, such as a disposable or rechargeable battery. The rechargeable battery may also be coupled to the peripheral device connection port to receive a charging current from a source external to the user equipment 500.

The processor 502 may be any programmable microprocessor, microcomputer or multiple processor chip or chips that can be configured by software instructions (applications) to perform a variety of functions, including the functions of the various embodiments described above. In some devices, multiple processors may be provided, such as one processor dedicated to wireless communication functions and one processor dedicated to running other applications. Typically, software applications may be stored in the internal memory before they are accessed and loaded into the processor 502. The processor 502 and may include internal memory sufficient to store the application software instructions. In many devices, the internal memory may be a volatile or nonvolatile memory, such as flash memory, or a mixture of both. For the purposes of this description, a general reference to memory refers to memory accessible by the processor 502 including internal memory or removable memory plugged into the device and memory within the processor 502 itself.

The foregoing method descriptions and the process flow diagrams are provided merely as illustrative examples and are not intended to require or imply that the steps of the various embodiments must be performed in the order presented. As will be appreciated by one of skill in the art the order of steps in the foregoing embodiments may be performed in any order. Words such as “thereafter, ” “then, ” “next, ” etc. are not intended to limit the order of the steps; these words are simply used to guide the reader through the description of the methods. Further, any reference to claim elements in the singular, for example, using the articles “a, ” “an” or “the” is not to be construed as limiting the element to the singular.

The various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

The hardware used to implement the various illustrative logics, logical blocks, modules, and circuits described in connection with the aspects disclosed herein 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, 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 conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., 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. Alternatively, some steps or methods may be performed by circuitry that is specific to a given function.

In various embodiments, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored as one or more instructions or code on a non-transitory computer-readable medium or non-transitory processor-readable medium. The steps of a method or algorithm disclosed herein may be embodied in a processor-executable software module, which may reside on a non-transitory computer-readable or processor-readable storage medium. Non-transitory server-readable, computer-readable or processor-readable storage media may be any storage media that may be accessed by a computer or a processor. By way of example but not limitation, such non-transitory server-readable, computer-readable or processor-readable media may include RAM, ROM, EEPROM, FLASH memory, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that may be used to store desired program code in the form of instructions or data structures and that may be accessed by a computer. Disk and disc, as used herein, includes compact disc (CD) , laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also included within the scope of non-transitory server-readable, computer-readable and processor-readable media. Additionally, the operations of a method or algorithm may reside as one or any combination or set of codes and/or instructions on a non-transitory server-readable, processor-readable medium and/or computer-readable medium, which may be incorporated into a computer program product.

The methods and systems described above require no particular component or function. Thus, any described component or function --despite its advantages --is optional. Also, some or all of the described components and functions described above may be used in connection with any number of other suitable components and functions.

The preceding description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the following claims and the principles and novel features disclosed herein.

Moreover, although this invention has been described in terms of certain preferred embodiments, other embodiments apparent to those of ordinary skill in the art are also within the scope of this invention. Accordingly, the scope of the invention is intended to be defined only by the claims which follow.

Claims

A method for wireless communication by a user equipment configured to communicate using a first subscription and communicate using a different second subscription, the method comprising:

receiving a first closed subscriber group (CSG) whitelist for the first subscription, the first CSG whitelist for the first subscription comprising a first closed subscriber group (CSG) identity and one or more public land mobile network (PLMN) identities (IDs) associated with the first CSG identity;

receiving a second closed subscriber group (CSG) whitelist for the different second subscription, the second CSG whitelist for the different second subscription comprising a second closed subscriber group (CSG) identity and one or more public land mobile network (PLMN) identities (IDs) associated with the second CSG identity;

performing at least one autonomous search function via the first subscription to obtain one or more signal measurements or one or more system information messages; and

via the different second subscription, performing a reselection to a closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of the one or more signal measurements, which were obtained by performing the at least one autonomous search function via the first subscription, or one or more portions of the one or more system information messages, which were obtained by performing the at least one autonomous search function via the first subscription.
A method for wireless communication by a user equipment configured to communicate using a first subscription and communicate using a different second subscription, the method comprising:

receiving a first closed subscriber group (CSG) whitelist for the first subscription, the first CSG whitelist for the first subscription comprising a first closed subscriber group (CSG) identity and one or more public land mobile network (PLMN) identities (IDs) associated with the first CSG identity;

receiving a second closed subscriber group (CSG) whitelist for the different second subscription, the second CSG whitelist for the different second subscription comprising a second closed subscriber group (CSG) identity and one or more public land mobile network (PLMN) identities (IDs) associated with the second CSG identity;

via the first subscription, obtaining one or more signal measurements or one or more system information messages; and

via the different second subscription, performing a reselection to a closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of the one or more signal measurements, which were obtained via the first subscription, or one or more portions of the one or more system information messages, which were obtained via the first subscription.
The method of Claim 2, wherein the one or more portions of the one or more system information messages, which were obtained via the first subscription, comprise:

a list of one or more previously visited CSG member cells, which the user equipment visited via the first subscription.
The method of Claim 2, wherein the obtaining the one or more signal measurements or the one or more system information messages via the first subscription, comprises:

performing at least one autonomous search function via the first subscription to obtain the one or more signal measurements or the one or more system information messages.
The method of Claim 2, wherein the performing, via the different second subscription, the reselection to the closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of the one or more signal measurements, which were obtained via the first subscription, or one or more portions of the one or more system information messages, which were obtained via the first subscription, comprises:

via the different second subscription, performing the reselection to the closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of one or more signal measurements obtained by performing an autonomous search function via the first subscription, or one or more portions of the one or more system information messages obtained by performing an autonomous search function via the first subscription.
The method of Claim 2, wherein the obtaining the one or more signal measurements or the one or more system information messages via the first subscription, comprises at least one of:

via the first subscription, obtaining a first set of one or more system information messages;

storing one or more portions of the first set of one or more system information messages in a closed subscriber group (CSG) member cell fingerprinting database;

via the first subscription, obtaining a first set of one or more signal measurements;

storing the first set of one or more signal measurements in a closed subscriber group (CSG) member cell fingerprinting database; or

via the first subscription, performing an autonomous search function including at least one of obtaining a second set of one or more signal measurements or obtaining a second set of one or more system information messages; and

wherein the performing, via the different second subscription, the reselection to the closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of the one or more signal measurements, which were obtained via the first subscription, or one or more portions of the one or more system information messages, which were obtained via the first subscription, comprises:

via the different second subscription, performing the reselection to the closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of:

the one or more portions of the first set of one or more system information messages obtained via the first subscription and stored in the CSG member cell fingerprinting database;

the first set of one or more signal measurements obtained via the first subscription and stored in the CSG member cell fingerprinting database;

the second set of one or more signal measurements obtained from the autonomous search function performed via the first subscription; or

one or more portions of the second set of one or more system information messages obtained from the autonomous search function performed via the first subscription.
The method of Claim 2, wherein the one or more system information messages, which were obtained from the autonomous search function that was performed via the first subscription, comprise at least one of one or more system information blocks (SIBs) or one or more master information blocks (MIBs) .
The method of Claim 2, wherein the one or more signal measurements, which were obtained via the first subscription, comprise at least one of one or more signal strength measurements or one or more signal quality measurements.
The method of Claim 2, further comprising:

via the first subscription, performing a reselection to a closed subscriber group (CSG) member cell associated with the first CSG identity using at least one of the one or more signal measurements, which were obtained via the first subscription, or one or more portions of the one or more system information messages, which were obtained via the first subscription.
The method of Claim 2, further comprising:

performing a tuneaway from the first subscription to the different second subscription;

wherein the obtaining the one or more signal measurements or the one or more system information messages via the first subscription, comprises:

obtaining the one or more signal measurements or the one or more system information messages via the first subscription before the tuneaway from the first subscription to the different second subscription; and

wherein the performing, via the different second subscription, the reselection to the closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of the one or more signal measurements, which were obtained via the first subscription, or one or more portions of the one or more system information messages, which were obtained via the first subscription, comprises:

after the tuneaway and via the different second subscription, performing the reselection to the closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of the one or more signal measurements, which were obtained via the first subscription, or one or more portions of the one or more system information messages, which were obtained via the first subscription.
The method of Claim 2, wherein the obtaining the one or more signal measurements or the one or more system information messages via the first subscription, comprises:

obtaining a plurality of signal measurements via the first subscription;

pruning at least one signal measurement from the plurality of signal measurements to obtain a pruned set of one or more signal measurements;

obtaining a plurality of system information messages via the first subscription; and

pruning at least one system information message from the plurality of system information messages to obtain a pruned set of one or more system information messages; and

wherein the performing, via the different second subscription, the reselection to the closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of the one or more signal measurements, which were obtained via the first subscription, or one or more portions of the one or more system information messages, which were obtained via the first subscription, comprises:

via the different second subscription, performing the reselection to the closed subscriber group (CSG) member cell associated with the second CSG identity using at least one of the pruned set of one or more signal measurements obtained via the first subscription, or one or more portions of the pruned set of one or more system information messages obtained via the first subscription.
An apparatus for wireless communication, the apparatus comprising:

one or more processors configured with processor-executable instructions to perform operations comprising the method of any one of Claims 1 to 11.
A non-transitory processor-readable medium having stored thereon processor-executable instructions to perform operations comprising the method of any one of Claims 1 to 11.
An apparatus for wireless communication, the apparatus comprising:

one or more means for performing the method of any one of Claims 1 to 11.