Cell selection / reselection with low power receiver measurements

Abstract

Embodiments of this disclosure relate to cell selection / reselection using measurements taken with a low-power receiver. In one aspect, a terminal device receives information from a network device associated with a cell selection criterion for measurements taken using a low-power receiver of the terminal device. The terminal device performs measurements of at least one cell using the low-power receiver and determines whether a cell selection criterion is met based on the measurements of the at least one cell taken with the low-power receiver. Based on the determination that the cell selection criterion is met by a first cell among the at least one cells, the terminal device performs cell selection to the first cell. In this way, the criterion for cell selection performed via a low-power receiver can be configured to ensure comparability between LR-based measurements and MR-based measurements, thereby improving communication performance while saving power.

Description

Cross-references to related applications

[0001] This application claims priority and benefit to European Patent Application No. 25167007.1, filed on March 28, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] Various example embodiments relate to the field of communications, and particularly to terminal devices, network devices, methods, apparatuses, and computer-readable media for determining signaling media for cell selection / reselection using low-power receiver measurements. Background Technology

[0003] A communication network can be viewed as a facility that enables communication between two or more communication devices or provides communication devices with access to a data network. Mobile or wireless communication networks are an example of communication networks.

[0004] Such communication networks operate according to standards provided by organizations such as 3GPP (3rd Generation Partnership Project) or ETSI (European Telecommunications Standards Institute). Examples of such standards include the so-called 5G (fifth generation) standard or other standards issued by 3GPP (e.g., Advanced 5G). Summary of the Invention

[0005] Overall, the exemplary embodiments of this disclosure provide a solution for cell selection / reselection using measurements from a low-power receiver.

[0006] In a first aspect, a terminal device is provided. The terminal device includes at least one processor and at least one memory storing instructions. When executed by the at least one processor, the instructions cause the terminal device to at least: receive information associated with a cell selection criterion from a network device, the cell selection criterion being a measurement performed using a low-power receiver of the terminal device; perform a measurement of at least one cell using the low-power receiver; determine, based on the measurement of the at least one cell using the low-power receiver, whether the cell selection criterion is satisfied; and perform cell selection to the first cell based on the determination that the cell selection criterion is satisfied by a first cell among the at least one cells. In this way, the criterion for cell selection performed via the low-power receiver can be configured to ensure comparability between LR-based measurements and MR-based measurements, thereby improving communication performance while saving power consumption.

[0007] In a second aspect, a network device is provided. The network device includes at least one processor and at least one memory storing instructions. When executed by the at least one processor, the instructions cause the network device to at least: send information associated with a cell selection criterion to a terminal device, the cell selection criterion being a measurement performed by a low-power receiver using the terminal device.

[0008] In a third aspect, a terminal device is provided. The terminal device includes at least one processor and at least one memory storing instructions. When executed by the at least one processor, the instructions cause the terminal device to at least: receive information associated with a cell reselection criterion from a network device, the cell reselection criterion being measurements performed using a low-power receiver of the terminal device; perform measurements of at least one neighboring cell using the low-power receiver; determine, based on the measurements of the at least one neighboring cell using the low-power receiver, whether the cell reselection criterion is met; and perform cell reselection to the first neighboring cell based on the determination that the cell reselection criterion is met by a first neighboring cell among the at least one neighboring cell. In this way, the criterion for cell reselection performed via the low-power receiver can be configured to ensure comparability between LR-based measurements and MR-based measurements, thereby improving communication performance while saving power consumption.

[0009] In a fourth aspect, a network device is provided. The network device includes at least one processor and at least one memory storing instructions. When executed by the at least one processor, the instructions cause the network device to at least: send information associated with a cell reselection criterion to a terminal device, the cell reselection criterion being a measurement performed by a low-power receiver using the terminal device.

[0010] In a fifth aspect, a terminal device is provided. The terminal device includes at least one processor and at least one memory storing instructions. When executed by the at least one processor, the instructions cause the terminal device to at least: determine at least one of a first criterion for cell selection based on cell measurements performed using a low-power receiver of the terminal device, or a second criterion for cell reselection based on cell measurements performed using a low-power receiver of the terminal device; perform measurements of at least one cell using the low-power receiver; determine whether the first criterion or the second criterion is satisfied based on the measurements of the at least one cell using the low-power receiver; and perform cell selection to the first cell based on the determination that the first criterion is satisfied by the first cell among the at least one cell; or perform cell reselection to the second cell based on the determination that the second criterion is satisfied by the second cell among the at least one cell. In this way, cell selection / reselection via the low-power receiver can be enabled based on a specific criterion to ensure comparability between LR-based measurements and MR-based measurements, thereby improving communication performance while saving power.

[0011] In a sixth aspect, a method performed by a terminal device is provided. The method includes: receiving information associated with a cell selection criterion from a network device, the cell selection criterion being a measurement performed using a low-power receiver of the terminal device; performing a measurement of at least one cell using the low-power receiver; determining, based on the measurement of the at least one cell using the low-power receiver, whether the cell selection criterion is satisfied; and performing cell selection to the first cell based on the determination that the cell selection criterion is satisfied by a first cell among the at least one cells.

[0012] In a seventh aspect, a method performed by a network device is provided. The method includes: sending information associated with a cell selection criterion to a terminal device, the cell selection criterion being a measurement performed by a low-power receiver using the terminal device.

[0013] In an eighth aspect, a method performed by a terminal device is provided. The method includes: receiving from a network device information associated with a cell reselection criterion, the cell reselection criterion being measurements performed using a low-power receiver of the terminal device; performing measurements of at least one neighboring cell using the low-power receiver; determining, based on the measurements of the at least one neighboring cell using the low-power receiver, whether the cell reselection criterion is met; and performing cell reselection to the first neighboring cell based on the determination that the cell reselection criterion is met by a first neighboring cell among the at least one neighboring cell.

[0014] In a ninth aspect, a method performed by a network device is provided. The method includes: sending information associated with a cell reselection criterion to a terminal device, the cell reselection criterion being a measurement performed by a low-power receiver using the terminal device.

[0015] In a tenth aspect, a method performed by a terminal device is provided. The method includes: determining at least one of a first criterion for cell selection based on cell measurements performed using a low-power receiver of the terminal device, or a second criterion for cell reselection based on cell measurements performed using a low-power receiver of the terminal device; performing measurements of at least one cell using the low-power receiver; determining whether the first criterion or the second criterion is met based on the measurements of the at least one cell using the low-power receiver; and performing cell selection to the first cell based on determining that the first criterion is met by a first cell among the at least one cell; or performing cell reselection to the second cell based on determining that the second criterion is met by a second cell among the at least one cell.

[0016] In an eleventh aspect, an apparatus is provided. The apparatus includes: components for receiving information associated with cell selection criteria from a network device, the cell selection criteria being measurements performed using a low-power receiver of a terminal device; components for performing measurements of at least one cell using the low-power receiver; components for determining whether the cell selection criteria are met based on the measurements of the at least one cell using the low-power receiver; and components for performing cell selection to a first cell based on the determined cell selection criteria, the cell reselection criteria being met by the first cell among the at least one cells.

[0017] In a twelfth aspect, an apparatus is provided. The apparatus includes components for transmitting information associated with a cell selection criterion to a terminal device, the cell selection criterion being a measurement performed by a low-power receiver using the terminal device.

[0018] In a thirteenth aspect, an apparatus is provided. The apparatus includes: components for receiving information associated with a cell reselection criterion from a network device, the cell reselection criterion being a measurement performed using a low-power receiver of a terminal device; components for performing measurements of at least one neighboring cell using the low-power receiver; components for determining whether the cell reselection criterion is met based on the measurements of the at least one neighboring cell using the low-power receiver; and components for performing cell reselection to a first neighboring cell based on the determined cell reselection criterion, the cell reselection criterion being met by the first neighboring cell among the at least one neighboring cell.

[0019] In a fourteenth aspect, an apparatus is provided. The apparatus includes components for transmitting information associated with a cell reselection criterion to a terminal device, the cell reselection criterion being a measurement performed by a low-power receiver using the terminal device.

[0020] In a fifteenth aspect, an apparatus is provided. The apparatus includes: components for determining at least one of a first criterion for cell selection based on cell measurements performed using a low-power receiver of a terminal device or a second criterion for cell reselection based on cell measurements performed using a low-power receiver of a terminal device; components for performing measurements of at least one cell using the low-power receiver; components for determining whether the first criterion or the second criterion is met based on the measurements of at least one cell using the low-power receiver; and components for performing cell selection to a first cell based on the determination of the first criterion, the first criterion being met by the first cell among at least one cell; or components for performing cell reselection to a second cell based on the determination of the second criterion, the second criterion being met by the second cell among at least one cell.

[0021] In a sixteenth aspect, a non-transitory computer-readable medium is provided, comprising program instructions for causing an apparatus to perform at least the method according to any one of the sixth to tenth aspects described above.

[0022] In a seventeenth aspect, a computer program product is provided that includes program instructions for performing at least the method according to any one of the sixth to tenth aspects described above.

[0023] In the eighteenth aspect, a computer program including instructions is provided, which, when executed by a device, cause the device to perform at least the method according to any one of the sixth to tenth aspects described above.

[0024] It should be understood that the summary portion is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0025] Some exemplary embodiments will now be described with reference to the accompanying drawings, in which:

[0026] Figure 1A An example communication system in which embodiments of the present disclosure may be implemented is illustrated;

[0027] Figures 1B-1C The diagram illustrates an example block diagram of the operation of a terminal device with a main radio and a low-power receiver.

[0028] Figure 2A An example signaling diagram illustrating a first example process according to some embodiments of the present disclosure is shown;

[0029] Figure 2B An example signaling diagram illustrating a second example process according to some embodiments of the present disclosure is shown;

[0030] Figure 2C An example signaling diagram illustrating a third example process according to some embodiments of the present disclosure is shown;

[0031] Figure 2D An example signaling diagram of a fourth example process according to some embodiments of the present disclosure is illustrated;

[0032] Figure 3A The illustration depicts a first example process of cell selection using low-power receiver measurements according to some embodiments of the present disclosure;

[0033] Figure 3B The illustration shows a second example process of cell selection using low-power receiver measurements according to some embodiments of the present disclosure;

[0034] Figure 4The illustration shows an example process of cell reselection using low-power receiver measurements according to some embodiments of the present disclosure;

[0035] Figure 5 The illustration depicts an example process of enabling cell selection / reselection using low-power receiver measurements according to some embodiments of the present disclosure;

[0036] Figure 6 The illustration shows a schematic diagram of a method implemented at a terminal device according to some embodiments of the present disclosure;

[0037] Figure 7 The illustration shows a schematic diagram of a method implemented at a network device according to some embodiments of the present disclosure;

[0038] Figure 8 The illustration shows a schematic diagram of a method implemented at a terminal device according to some embodiments of the present disclosure;

[0039] Figure 9 The illustration shows a schematic diagram of a method implemented at a network device according to some embodiments of the present disclosure;

[0040] Figure 10 The illustration shows a schematic diagram of a method implemented at a terminal device according to some embodiments of the present disclosure;

[0041] Figure 11 A simplified block diagram of an apparatus suitable for implementing embodiments of the present disclosure is illustrated; and

[0042] Figure 12 A block diagram of an example computer-readable medium according to some embodiments of the present disclosure is illustrated.

[0043] Throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. Detailed Implementation

[0044] The principles of this disclosure will now be described with reference to some exemplary embodiments. It should be understood that these embodiments are described for illustrative purposes only and to assist those skilled in the art in understanding and implementing this disclosure, and do not constitute any limitation on the scope of this disclosure. The disclosure described herein can be implemented in various ways other than those described below.

[0045] In the following description and claims, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains.

[0046] In this disclosure, references to "an embodiment," "embodiment," and "example embodiment," etc., indicate that the described embodiment may include a particular feature, structure, or characteristic, but not every embodiment must include that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a particular feature, structure, or characteristic is described in connection with an embodiment, those skilled in the art will understand that, whether explicitly described or not, combining it with other embodiments to affect such a feature, structure, or characteristic is within the knowledge of those skilled in the art.

[0047] It should be understood that although the terms “first” and “second” may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, without departing from the scope of the exemplary embodiments, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. As used herein, the term “and / or” includes any and all combinations of one or more of the listed terms.

[0048] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments. The singular forms “a,” “an,” and “the” used herein also include the plural forms unless the context clearly indicates otherwise. Further understanding, the terms “comprises,” “comprising,” “has,” “having,” “includes,” and / or “including”, when used herein, specify the presence of the stated features, elements, and / or components, but do not exclude the presence or addition of one or more other features, elements, components, and / or combinations thereof. As used herein, “at least one of the following: ” and “<at least one of a list of two or more elements>” and similar wording (where a list of two or more elements is connected by “and” or “or”) means at least any one of these elements, or at least any two or more of these elements, or at least all of these elements.

[0049] As used in this application, the term "circuit system" may refer to one or more or all of the following: (a) Pure hardware circuit implementation (such as implementations only in analog and / or digital circuit systems), and (b) A combination of hardware circuitry and software, such as (if applicable): (i) A combination of (multiple) analog and / or digital hardware circuits and software / firmware, and (ii) Any part of a hardware processor (including multiple digital signal processors), software, and memory (multiple processors) having software, which work together to enable a device (such as a mobile phone or server) to perform various functions, and (c) (Multiple) hardware circuits and / or (multiple) processors, such as (multiple) microprocessors or a portion thereof, which require software (e.g., firmware) to operate, but may not exist when operation is not required.

[0050] The definition of "circuit system" applies to all uses of the term in this application, including in any claim. As another example, as used in this application, the term "circuit system" also covers implementations of only hardware circuitry or processors (or processors in general) or portions thereof and their accompanying software and / or firmware. For instance, if applicable to a particular claim element, the term "circuit system" also covers baseband integrated circuits or processor integrated circuits for mobile devices, or similar integrated circuits in servers, cellular network devices, or other computing or networking devices.

[0051] As used herein, the term "communication network" refers to a network that conforms to any suitable communication standard, such as Long Term Evolution (LTE), LTE-A Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed ​​Packet Access (HSPA), Narrowband Internet of Things (NB-IoT), etc. Furthermore, communication between terminal devices and network devices in a communication network can be performed according to any suitable generation of communication protocols, including but not limited to first generation (1G), second generation (2G), 2.5G, 2.75G, third generation (3G), fourth generation (4G), 4.5G, fifth generation (5G), Advanced 5G (Advanced 5G), future sixth generation (6G) communication protocols, and / or any other protocols currently known or to be developed in the future. Embodiments of this disclosure can be applied to various communication systems. Given the rapid development of communications, there will naturally be future types of communication technologies and systems embodying this disclosure. This should not be construed as limiting the scope of this disclosure to the systems described above.

[0052] As used herein, the term "network device" refers to a node in a communication network through which terminal devices access the network and receive services. Network devices can refer to base stations (BS) or access points (APs), such as Node B (NodeB or NB), evolved Node B (eNodeB or eNB), NR NB (also known as gNB), Remote Radio Unit (RRU), Radio Header (RH), Remote Radio Header (RRH), relay, low-power nodes (such as femtoseconds, picoseconds), non-terrestrial network (NTN) or non-terrestrial network equipment (such as satellite network equipment, low Earth orbit (LEO) satellites and geostationary orbit (GEO) satellites), aircraft network equipment, etc., depending on the terminology and technology used.

[0053] The term "terminal device" refers to any terminal device capable of wireless communication. By way of example and not limitation, a terminal device may also be referred to as a communication device, user equipment (UE), subscriber station (SS), portable subscriber station, mobile station (MS), or access terminal (AT). Terminal devices may include, but are not limited to, mobile phones, cellular phones, smartphones, Voice over IP (VoIP) phones, wireless local loop phones, tablets, wearable terminal devices, personal digital assistants (PDAs), portable computers, desktop computers, image capture terminal devices (such as digital cameras), gaming terminal devices, music storage and playback devices, in-vehicle wireless terminal devices, wireless endpoints, mobile stations, laptop embedded devices (LEE), laptop mounted devices (LME), USB dongles, smart devices, wireless customer premises equipment (CPE), Internet of Things (IoT) devices, watches or other wearable devices, head-mounted displays (HMDs), vehicles, drones, medical devices and applications (e.g., remote surgery), industrial devices and applications (e.g., robots and / or other wireless devices operating in industrial and / or automated processing chain environments), consumable electronic devices, devices operating on commercial and / or industrial wireless networks, etc. In the following description, the terms "terminal equipment", "communication equipment", "terminal", "user equipment" and "UE" are used interchangeably.

[0054] As used herein, the term "measurement" refers to the process of collecting and analyzing signals to evaluate the performance, quality, or characteristics of a communication system, network, or signal. It involves quantifying various parameters, such as signal strength, error rate, bandwidth utilization, latency, throughput, and other relevant metrics, to ensure that the communication system operates efficiently and meets specified requirements. As used herein, the term "standard" or "multiple standards" can refer to criteria, rules, or principles used as the basis for judgment or decision-making.

[0055] As used herein, the term “Radio Access Technology (RAT)” refers to the various technologies and standards used for wireless communication between devices and networks, such as GSM (2G), UMTS (3G), LTE (4G), NR (5G), and other radio access technologies in cellular networks, and Wi-Fi (802.11), Bluetooth, and other radio access technologies in non-cellular networks. These technologies enable voice calls, data transmission, internet access, and connectivity for a variety of other wireless services.

[0056] The principles and embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. First, refer to... Figure 1A The illustration depicts an example communication system 100 in which embodiments of the present disclosure may be implemented. Figure 1A As shown, system 100, which may be part of a communication network, includes terminal device 110 and network device 120. Network device 120 may be a gNB, network (NW), or TRP that schedules a first bandwidth portion (BWP) or a first cell 131. As long as terminal device 110 is located in the corresponding cell (e.g., first cell 131) of network device 120, terminal device 110 can connect and communicate with network device 120 in UL or DL. First cell 131 may be referred to as the serving cell of terminal device 110. Figure 1A The diagram also illustrates neighboring cells 132 of terminal device 110. It should be noted that multiple neighboring cells can exist in a communication environment.

[0057] In a communication system, UL refers to the link from terminal device 110 to network device 120, while DL refers to the link from network device 120 to terminal device 110. Network device 120 can send scheduling information to terminal device 110 for scheduling uplink transmissions, and terminal device 110 can send uplink transmissions or multiple repetitions of uplink transmissions to network device 120.

[0058] Communication in communication system 100 can be implemented according to any suitable communication protocol(s), including but not limited to cellular communication protocols such as first-generation (1G), second-generation (2G), third-generation (3G), fourth-generation (4G), fifth-generation (5G), and sixth-generation (6G), wireless local area network communication protocols such as IEEE 802.11, and / or any other protocols currently known or to be developed in the future. Furthermore, communication can utilize any suitable wireless communication technology, including but not limited to: Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Frequency Division Duplex (FDD), Time Division Duplex (TDD), Multiple-Input Multiple-Output (MIMO), Orthogonal Frequency Division Multiplexing (OFDM), Discrete Fourier Transform Spread Spectrum OFDM (DFT-s-OFDM), and / or any other technologies currently known or to be developed in the future.

[0059] It should be understood that Figure 1A The number, connection relationships, and types of the devices shown (i.e., terminal device 110 and network device 120) are for illustrative purposes only and do not represent any limitation. For example, communication system 100 may include any suitable number of devices suitable for implementing embodiments of this disclosure. For example, although Figure 1A Terminal device 110 is described as a mobile phone, but terminal device 110 can be any type of user equipment. Hereinafter, for illustrative purposes, some example embodiments are described in which terminal device 110 operates as a UE and network device 120 operates as a base station.

[0060] In RRC active state, the UE is connected to the network and is actively communicating with it. The network knows the UE's exact location within the cell. This state allows the UE to send and receive data, such as voice calls, video streaming, web browsing, and other real-time or near real-time services. The UE continuously sends and receives signals to maintain the connection, and the network allocates resources (such as bandwidth) to support the ongoing communication.

[0061] In RRC idle state, the UE does not actively connect to the network for data transmission. However, the UE still registers with the network and can monitor the paging channel to receive incoming calls or messages. The network only knows the UE's location at a larger granularity, such as within the tracking area. The UE can perform activities such as cell reselection to choose the best cell to camp on. In this state, the UE consumes less power compared to the active state because it does not send and receive data frequently. RRC inactive state is an intermediate state between active and idle states. In this state, the UE connects to the network but does not actively send data. The network knows the UE's location within a smaller area than in idle state, but not as precisely as in active state. Compared to active state, this state is used to reduce signaling overhead and power consumption while still allowing the UE to quickly resume data transmission when needed. For example, if the UE has just finished a data session but may need to start another data session soon, it can remain in inactive state to avoid the overhead of releasing and re-establishing the connection.

[0062] In some example embodiments, this enables the use of a low-power receiver (LR) at the UE instead of a primary radio (MR), thereby reducing the UE's power consumption. For example, the UE may include both an MR and an LR. The MR may be implemented as an NR transceiver, and the LR may be implemented as a low-power wake-up signal (LP-WUS) receiver. In this case, the UE's MR may be in sleep mode (or even powered off) to conserve power and is only activated when a wake-up signal (WUS) is received from the network. WUS is particularly useful in scenarios where devices frequently remain in deep sleep mode to conserve energy. By using WUS, these devices can maintain a low-power state until a specific task needs to be performed, thereby reducing the need for continuous operation and thus extending battery life or optimizing energy harvesting resources. As used herein, the terms "primary receiver," "primary radio," and "MR" are used interchangeably. As used herein, the terms "low-power receiver (LR)," "low-power wake-up receiver (LP-WUR)," "LP-WUS receiver," and "wake-up receiver (WUR)" are used interchangeably.

[0063] Figure 1B and Figure 1C Example block diagrams of terminal device 110 with a main radio 111 and a low-power receiver 112 are shown. The low-power receiver 112 can monitor multiple WUS signals from network device 120. By applying simple WUS signals and using dedicated hardware for monitoring, the low-power receiver 112 can consume significantly less power than the main radio 111. For example, the low-power receiver 112 can be configured to receive WUS signals. Figure 1B As shown, WUS indicates "OFF", meaning the main radio 111 of terminal device 110 is in a switched-off or deep sleep mode.

[0064] In some example embodiments, the low-power receiver 112 can operate in an always-on mode with very low power consumption. Network device 120 can trigger the wake-up of terminal device 110 in an event-driven manner by sending a specific WUS to terminal device 110. The WUS can be monitored by the low-power receiver 112. Figure 1C As shown, upon receiving a WUS signal indicating "ON", the low-power receiver 112 can trigger MR wake-up and initiate communication. For example, the low-power receiver 112 wakes up the main radio 111, and thus the main radio 111 can switch to an ON state or a sleep-free mode. Otherwise, the main radio 111 can be turned off or remain in a sleep mode, such as a deep sleep mode or an ultra-deep sleep mode.

[0065] As used herein, the power states of the main radio 111 may be referred to as the off state, on state, sleep mode, a specific sleep mode among multiple different sleep modes, or no sleep mode. As used herein, the term "no sleep mode" may refer to the power state or mode in which the main radio 111 of the terminal device 110 performs channel monitoring and channel measurements. "No sleep mode" may also be referred to as "normal mode" or "on state." Channel monitoring may refer to Physical Downlink Control Channel (PDCCH) monitoring, Physical Downlink Shared Channel (PDSCH) monitoring, or any other suitable monitoring. Examples of channel measurements may include, but are not limited to, Radio Resource Management (RRM) measurements, Radio Link Monitoring (RLM) measurements, Beam Failure Detection (BFD) measurements, Channel State Information (CSI) measurements, Beam Management (BM) measurements, Idle Mode measurements, etc.

[0066] It should be understood that, despite Figure 1B and Figure 1C The main radio 111 and the low-power receiver 112 are shown as separate components, but in some example embodiments, the low-power receiver 112 may be implemented as part of the main radio 111. That is, the corresponding part of the main radio 111 will operate in an always-on mode with very low power consumption, while the rest of the main radio 111 will be turned on and off for different scenarios.

[0067] Furthermore, in some examples, serving cell assessment can be offloaded from MR to LR to enable significant energy savings. LR can carry serving cell assessment-related measurements based on the new reference signal, low-power synchronization signal (LP-SS), or SSB, depending on the LR type.

[0068] In some examples, for serving cell measurement offloading (i.e., no serving cell measurements performed by MR), the entry criterion for serving cell measurement offloading can be defined as at least MR greater than a certain RSRP threshold, or LR can be considered. The exit criterion is based on the LR measurement result. In some other examples, for neighboring cell measurement relaxation for UEs capable of LP-WUS, no additional MR-based criteria may be required. For example, MR-based criteria could include 'UE is not at the cell edge'.

[0069] In some examples, the UE performs serving cell measurements using LR (i.e., without using MR) when the entry conditions for serving cell measurements (e.g., complete offloading) are met. Furthermore, if MR serving cell measurements are unavailable, neighboring cell measurement relaxation can be determined based on LR measurement results.

[0070] In some examples, OFDM-based LR for neighboring cell measurements can be enabled if the network explicitly allows the UE to use LR for neighboring cell measurements. In some examples, the UE is only allowed to use OFDM-based LR for neighboring cell measurements if the network supports Capability Reduction (RedCap) (e.g., if RedCap UEs are allowed on the cell or 1Rx or 2Rx RedCap access is allowed in the system information) and the MR relaxation threshold is met. In some examples, the UE is only allowed to use OFDM-based LR for neighboring cell measurements if it is a 1RxRedCap UE. As used herein, the term "Capability Reduction (RedCap) UE" refers to a type of user equipment (UE) designed with lower complexity and reduced capabilities compared to legacy equipment.

[0071] For UEs in RRC_IDLE / RRC_INACTIVE mode, OFDM-based LR can support the relaxation of MR (multiple) neighboring cell measurements when the criteria for MR RRM measurement relaxation for (multiple) neighboring cells are met. However, the technical implementation of cell measurement relaxation using LR requires the network to be under control because the noise figure (NF) of LR may be worse than that of MR, with only 1RX, and measurements using MR and LR are not comparable.

[0072] In view of the above, some embodiments of this disclosure provide a cell selection / reselection scheme using low-power receiver measurements. In some embodiments of this disclosure, the criteria for cell selection / reselection based on LR measurements are configured by the network. This enables the comparability of LR-based measurements with MR-based measurements, thereby allowing the UE to make cell selection / reselection decisions directly based on LR-based measurements. For example, if LR is allowed to perform inter-frequency or inter-RAT measurements on (multiple) adjacent cells for cell reselection, or to perform cell measurements for cell selection, the required signal quality level for received signal power and quality must be specified to ensure comparability between LR-based and MR-based measurements; otherwise, cell measurements will be performed by MR.

[0073] Figure 2A The illustration shows a signaling diagram illustrating a first example process 200A according to some embodiments of the present disclosure. For discussion purposes, reference will be made to... Figure 1A Describe process 200A. Process 200A may involve terminal device 110 and network device 120. In some embodiments, terminal device 110 may include, for example: Figure 1B and Figure 1C The main radio 111 and low-power receiver 112 are shown. In some examples, the low-power receiver may be an OFDM-based receiver. It should be understood that, although in Figure 1A Process 200A is described in the communication system 100, but this process can also be applied to other communication scenarios. The steps in process 200A are for illustrative purposes only and should not be construed as limiting the scope of the invention. In some implementations, one or more steps in process 200A may be omitted without departing from the spirit of this disclosure. Additional operational steps not explicitly described in process 200A may be combined. Furthermore, the execution order of the steps in process 200A may be reordered or executed concurrently.

[0074] like Figure 2AAs shown, network device 120 sends (201) information 202 related to cell selection criteria to terminal device 110. The cell selection criteria are associated with measurements performed using a low-power receiver of terminal device 110. Terminal device 110 receives (203) information 202 from network device 120 and performs (204) measurements of at least one cell using the low-power receiver. In some implementations, terminal device 110 may begin cell measurements using the low-power receiver before receiving information 202. Alternatively, cell measurements using the low-power receiver may begin when or after terminal device 110 receives information 202. Terminal device 110 may determine whether the cell selection criteria are met based on measurements of at least one cell using the low-power receiver. If terminal device 110 determines (205) that the cell selection criteria are met by a first cell among at least one cells, then terminal device 110 performs (206) cell selection to the first cell. In this way, a standard for cell selection via low-power receivers can be configured to ensure comparability between LR-based and MR-based measurements, thereby improving communication performance while saving power.

[0075] In some embodiments, information 202 may include at least one first parameter of a cell selection reception level value for a measurement performed using a low-power receiver. Information 202 may also include at least one second parameter of a cell selection quality value for a measurement performed using a low-power receiver.

[0076] In some embodiments, when it is determined that the cell selection criteria are met by a first cell, the terminal device 110 may determine the cell selection reception level value of the first cell based on at least one first parameter of the cell selection reception level value and a measurement of the first cell using a low-power receiver; and determine the cell selection quality value of the first cell based on at least one second parameter of the measurement of the first cell using a low-power receiver and the cell selection quality value of the first cell. If the cell selection reception level value of the first cell is positive and the cell selection quality value of the first cell is positive, then the terminal device 110 may determine that the cell selection criteria are met by the first cell.

[0077] For example, terminal device 110 can perform cell measurements using the terminal device's low-power receiver and determine the cell selection reception (RX) level value of the measured cell (e.g., using S) based on the cell measurements and the corresponding OFDM-LR specific parameters received from network device 120. rxlev,OFDM-LR (represented by) and cell selection quality values ​​measured by OFDM-LR (e.g., using S) qual,OFDM-LR (Indicated). If the cell measurement using a low-power receiver satisfies S... rxlev,OFDM-LR>0 and S qual,OFDM-LR If the value is >0, then the terminal device 110 can select the cell to which it wants to reside.

[0078] In some implementations, at least one first parameter for cell selection reception level values ​​may include a first minimum required reception level for measurements performed using a low-power receiver. For example, information 202 may include the minimum required RX level (dBm) in the cell for OFDM-LR measurements, i.e., the OFDM-LR-specific Q... rxlevmin For example, using Q rxlevmin,OFDM-LR The at least one first parameter used for cell selection reception level values ​​may further include an offset to a first minimum desired reception level (i.e., Q). rxlevminoffset Terminal device 110 can be accessed via S... rxlev,OFDM-LR =Q rxlevmeas OFDM-LR-(Q rxlevmin,OFDM-LR +Q rxlevminoffset )-P compensation -Qoffset temp To determine the cell selection RX level value for OFDM-LR measurements, where Q rxlevmeas OFDM-LR is the cell RX level value (RSRP) measured using a low-power receiver. rxlevminoffset and P compensation Defined in 3GPP TS 38.304, and Qoffset temp This is the temporary offset applied to the cell as specified in 3GPP TS 38.331. Parameter Q rxlevminoffset P compensation and Qoffset temp It can also be used to determine the cell selection RX level value measured by MR when using the master radio for cell selection, for example, S rxlev =Q rxlevmeas -(Q rxlevmin +Q rxlevminoffset )-P compensation -Qoffset temp Q rxlevmeas It is the cell RX level value (RSRP) measured using the main radio receiver.

[0079] In some alternative implementations, at least one first parameter for the cell selection reception level value may include: an additional offset to a second minimum desired reception level for measurements taken using a low-power receiver. For example, information 202 may include to Q rxlevmin Additional OFDM-LR specific offset (e.g., using Q) rxlevminoffset,OFDM-LR (Representation). At least one first parameter used for cell selection reception level values ​​may also include a second minimum required reception level (e.g., Q). rxlevmin) and the offset to the second minimum required reception level (e.g., Q) rxlevminoffset Terminal device 110 can be accessed via S... rxlev,OFDM-LR =Q rxlevmeas OFDM-LR-(Q rxlevmin +Q rxlevminoffset +Q rxlevminoffset,OFDM-LR )-P compensation -Qoffset temp To determine the cell selection RX level value for OFDM-LR measurements, where Q rxlevmeas OFDM-LR is the cell RX level value (RSRP) measured using a low-power receiver. rxlevminoffset and P compensation Defined in 3GPP TS 38.304, and Qoffset temp This is the temporary offset applied to the cell as specified in 3GPP TS 38.331. Parameter Q rxlevmin Q rxlevminoffset P compensation and Qoffset temp It can also be used to determine the cell selection RX level value measured by MR when using the master radio for cell selection, for example, S rxlev =Q rxlevmeas -(Q rxlevmin +Q rxlevminoffset )-P compensation -Qoffset temp Q rxlevmeas It is the cell RX level value (RSRP) measured using the main radio receiver.

[0080] In some implementations, at least one second parameter for cell selection quality values ​​may include a first minimum required quality level for measurements performed using a low-power receiver. For example, information 202 may include the minimum required quality level (dBm) in the cell for OFDM-LR measurements, i.e., the OFDM-LR-specific Q... qualmin For example, using Q qualmin,OFDM-LR The at least one second parameter used for cell selection quality values ​​may also include an offset to a first minimum desired quality level (i.e., Q). qualminoffset Terminal device 110 can be accessed via S... qual,OFDM-LR =Q qualmeas OFDM-LR-(Q qualmin,OFDM-LR +Q qualminoffset -Qoffset temp To determine the cell selection quality value used for OFDM-LR measurements, where Q qualmeas OFDM-LR is a cell quality value (RSRQ) measured using a low-power receiver. qualminoffsetDefined in 3GPP TS 38.304, and Qoffset temp This is the temporary offset applied to the cell as specified in 3GPP TS 38.331. Parameter Q qualminoffset and Qoffset temp It can also be used to determine the cell selection quality value measured by MR when using the master radio for cell selection, for example, S qual =Q qualmeas -(Q qualmin +Q qualminoffset -Qoffset temp Q qualmeas It is the cell quality value (RSRQ) measured using the main radio receiver.

[0081] In some alternative implementations, at least one second parameter for the cell selection quality value may include an additional offset to a second minimum desired quality level for measurements taken using a low-power receiver. For example, information 202 may include to Q qualmin Additional OFDM-LR specific offset (e.g., using Q) qualminoffset,OFDM-LR (Representation). At least one second parameter used for cell selection quality values ​​may also include a second minimum required quality level (e.g., Q). qualmin and the offset to the second minimum required quality level (e.g., Q). qualminoffset Terminal device 110 can be accessed via S... qual,OFDM-LR =Q qualmeas , OFDM-LR -(Q qualmin +Q qualminoffset +Q qualminoffset,OFDM-LR -Qoffset temp Determine the cell selection quality value for OFDM-LR measurements, where Q qualmeas OFDM-LR is a cell quality value (RSRQ) measured using a low-power receiver. qualminoffset Defined in 3GPP TS 38.304, and Qoffset temp This is the temporary offset applied to the cell as specified in 3GPP TS 38.331. Parameter Q qualmin Q qualminoffset and Qoffset temp It can also be used to determine the cell selection quality value measured by MR when using the master radio for cell selection, for example, S qual =Q qualmeas -(Q qualmin +Q qualminoffset -Qoffset temp Q qualmeasIt is the cell quality value (RSRQ) measured using the main radio receiver.

[0082] In some embodiments, information 202 may be carried in System Information Block 1 (SIB1). For example, a terminal device 110 in an idle state may receive SIB1 carrying parameters for cell selection criteria used for LR measurement from network device 120.

[0083] Alternatively or additionally, terminal device 110 may receive a Radio Resource Control (RRC) release command from network device 120 and transition from RRC connected mode to RRC inactive mode or RRC idle mode. In some implementations, information 202 may be received prior to the transition. For example, information 202 may be carried in the RRC release command. In some other examples, information 202 may be carried in dedicated signaling.

[0084] Figure 2B The illustration shows a signaling diagram illustrating a second example process 200B according to some embodiments of the present disclosure. For discussion purposes, reference will be made to... Figure 1A Process 200B is described. Process 200B may involve terminal device 110 and network device 120. In some embodiments, terminal device 110 may include, for example, Figure 1B and Figure 1C The main radio 111 and low-power receiver 112 are shown. In some examples, the low-power receiver may be an OFDM-based receiver. It should be understood that, although in Figure 1A Process 200B is described in the communication system 100, but this process can also be applied to other communication scenarios. The steps in process 200B are for illustrative purposes only and should not be construed as limiting the scope of the invention. In some implementations, one or more steps in process 200B may be omitted without departing from the spirit of this disclosure. Additional operational steps not explicitly described in process 200B may be combined. Furthermore, the execution order of the steps in process 200B may be reordered or executed concurrently.

[0085] like Figure 2BAs shown, network device 120 sends (211) information 212 related to cell reselection criteria to terminal device 110. The cell reselection criteria are associated with measurements using a low-power receiver of terminal device 110. Terminal device 110 receives (213) information 212 from network device 120 and performs (214) measurements of at least one neighboring cell using the low-power receiver. In some implementations, terminal device 110 may begin cell measurements using the low-power receiver before receiving information 212. Alternatively, cell measurements using the low-power receiver may begin when or after terminal device 110 receives information 212. Terminal device 110 may determine whether the cell reselection criteria are met based on measurements of at least one neighboring cell using the low-power receiver. If terminal device 110 determines (215) that the cell reselection criteria are met by a first neighboring cell among at least one neighboring cell, then terminal device 110 performs (216) cell reselection to the first neighboring cell. In this way, a standard for cell reselection via low-power receivers can be configured to ensure comparability between LR-based and MR-based measurements, thereby improving communication performance while saving power.

[0086] In some embodiments, information 212 may include at least one first parameter of at least one first threshold, the at least one first parameter being associated with a cell reselection quality value for measurements taken using a low-power receiver of at least one neighboring cell. The at least one first threshold may be associated with at least one frequency of the at least one neighboring cell. The frequency priority of the at least one frequency may be higher or lower than the frequency priority of the serving cell of the terminal device 110.

[0087] Alternatively or additionally, information 212 may include at least one second parameter for at least one second threshold, the at least one second parameter being associated with a cell reselection reception level value for measurements of at least one neighboring cell using a low-power receiver. The at least one second threshold is associated with at least one frequency of the at least one neighboring cell. The frequency priority of the at least one frequency may be higher or lower than the frequency priority of the serving cell of terminal device 110.

[0088] In some implementations, at least one first parameter for at least one first threshold may include at least one first threshold. For example, for frequencies with a higher priority than the current serving frequency, information 212 may include a cell reselection quality value (e.g., using S) measured by OFDM-LR for use by the UE when reselecting to a higher priority frequency. qual,OFDM-LR The threshold (in dB) is expressed as (e.g., using OFDM-LRThresh). X, HighQ(Representation). In another example, for frequencies with a lower priority than the current serving frequency, information 212 may include cell reselection quality values ​​(e.g., using S) measured by OFDM-LR for use by the UE when reselecting to a lower priority frequency. qual,OFDM-LR The threshold (in dB) is expressed as (e.g., using OFDM-LRThresh). X, LowQ (Representation). Each frequency of NR and E-UTRAN can have a specific threshold for OFDM-LR measurements (OFDM-LRThresh). X, HighQ Or OFDM-LRThresh X, LowQ ).

[0089] In some alternative implementations, at least one first parameter for the first threshold may include at least one threshold associated with a cell reselection quality value measured for at least one neighboring cell, and an additional offset to the at least one threshold for measurements taken using a low-power receiver. The at least one threshold may be associated with at least one frequency of at least one neighboring cell. For example, for frequencies with higher priority than the current serving frequency, information 212 may include a threshold (in dB) for the cell reselection quality value used by the UE when reselecting to a higher priority frequency (i.e., Threshold). X, HighQ For frequencies with a lower priority than the current serving frequency, information 212 may include a threshold (in dB) for the cell reselection quality value used by the UE when reselecting to a lower priority frequency (i.e., Threshold). X, LowQ Furthermore, information 212 may also include a threshold (e.g., Thresh). X, HighQ or Thresh X, LowQ Additional OFDM-LR specific offsets (e.g., OFDM-LRThresh) Q Thresh X, HighQ and Thresh X, LowQ Defined in 3GPP TS 38.304. Parameter Thresh X, HighQ and Thresh X, LowQ It can also be used as the squared threshold for UEs in cell reselection based on MR measurements.

[0090] In some implementations, at least one second parameter for at least one second threshold may include at least one second threshold. For example, for frequencies with a higher priority than the current serving frequency, information 212 may include a cell reselection RX level value (e.g., using S) measured by OFDM-LR for use by the UE when reselecting to a higher priority frequency. rxlev,OFDM-LR The threshold (in dB) is expressed as (e.g., using OFDM-LRThresh). X, HighP(Representation). In another example, for frequencies with a lower priority than the current serving frequency, information 212 may include the cell reselection RX level value (e.g., using S) measured by OFDM-LR for use by the UE when reselecting to a lower priority frequency. rxlev,OFDM-LR The threshold (in dB) is expressed as (e.g., using OFDM-LRThresh). X, LowP (Representation). Each frequency of NR and E-UTRAN can have a specific threshold for OFDM-LR measurements (OFDM-LRThresh). X, HighP Or OFDM-LRThresh X, LowP ).

[0091] In some alternative implementations, at least one second parameter for the second threshold may include at least one threshold associated with a cell reselection reception level value measured for at least one neighboring cell, and an additional offset to the at least one threshold for measurements taken using a low-power receiver. The at least one threshold may be associated with at least one frequency of at least one neighboring cell. For example, for frequencies with higher priority than the current serving frequency, information 212 may include a threshold (in dB) for the cell reselection RX level value used by the UE when reselecting to a higher priority frequency (i.e., Threshold). X, HighP For frequencies with a lower priority than the current serving frequency, information 212 may include a threshold (in dB) for the cell reselection RX level value used by the UE when reselecting to a lower priority frequency (i.e., Threshold). X, LowP Furthermore, information 212 may also include a threshold (e.g., Thresh). X, HighP or Thresh X, LowP Additional OFDM-LR specific offsets (e.g., OFDM-LRThresh) P Thresh X, HighP and Thresh X, LowP Defined in 3GPP TS 38.304. Parameter Thresh X, HighP and Thresh X, LowP It can also be used as the Srxlev threshold for UEs in cell reselection based on MR measurements.

[0092] In some embodiments, terminal device 110 may determine whether at least one third parameter for a third threshold is received from a network device, the third threshold being associated with a cell reselection quality value measured for the serving cell of terminal device 110 using a low-power receiver. For example, terminal device 110 may receive a cell reselection quality value (e.g., using S) measured for OFDM-LR used by the UE on the serving cell when reselecting to a lower priority RAT / frequency. qual,OFDM-LRThe threshold (in dB) is expressed as (e.g., using OFDM-LRThresh). Serving, LowQ (Represented). In some alternative implementations, at least one third parameter for the third threshold may include a threshold associated with a cell reselection quality value measured against the serving cell using the primary receiver of terminal device 110, and an additional offset to the threshold for measurements taken using a low-power receiver. For example, terminal device 110 may receive a threshold (in dB) for the cell reselection quality value used by the UE on the serving cell when reselecting to a lower priority RAT / frequency (e.g., using Thresh). Serving, LowQ (representation), and to a threshold (e.g., Thresh) Serving, LowQ Additional OFDM-LR specific offsets (e.g., OFDM-LRThresh) Q Thresh Serving, LowQ Defined in 3GPP TS 38.304. Parameter Thresh Serving, LowQ It can also be used by the UE in the serving cell when reselecting a lower priority RAT / frequency cell based on MR measurements. qual Threshold.

[0093] In some embodiments, terminal device 110 may also receive from network device 120 at least one fourth parameter of a fourth threshold associated with a cell reselection reception level value, the cell reselection reception level value being a measurement of the serving cell of terminal device 110 using a low-power receiver. In some implementations, the at least one fourth parameter for the fourth threshold may include the fourth threshold. For example, terminal device 110 may receive a cell reselection reception level value (e.g., using S) measured for OFDM-LR used by the UE on the serving cell when reselecting to a lower priority RAT / frequency. rxlev,OFDM-LR The threshold (in dB) is expressed as (e.g., using OFDM-LRThresh). Serving, LowP (Represented). In some alternative implementations, at least one fourth parameter for the fourth threshold may include a threshold associated with a cell reselection reception level value for measurements of the serving cell using the primary receiver of terminal device 110, and an additional offset to the threshold for measurements performed using a low-power receiver. For example, terminal device 110 may receive a threshold (in dB) for a cell reselection reception level value used by the UE on the serving cell when reselecting to a lower priority RAT / frequency (e.g., using Thresh). Serving, LowP (representation), and to a threshold (e.g., Thresh) Serving, LowP Additional OFDM-LR specific offsets (e.g., OFDM-LRThresh) P Thresh Serving, LowPDefined in 3GPP TS 38.304. Parameter Thresh Serving, LowP It can also be used by the UE in the serving cell when reselecting a lower priority RAT / frequency cell based on MR measurements. rxlev Threshold.

[0094] Terminal device 110 can be connected with Figure 2A In a similar manner to determining the cell selection RX level value for OFDM-LR measurements in the embodiment of process 200A, the cell reselection reception level value (e.g., S) for OFDM-LR measurements on neighboring cells or serving cells is determined (e.g., S). rxlev,OFDM-LR ).

[0095] For example, terminal device 110 can receive from network device 120 at least one fifth parameter for a cell reselection reception level value, the cell reselection reception level value being a measurement performed using a low-power receiver. The cell reselection reception level value of the first neighboring cell can be determined based on measurements of the first neighboring cell using a low-power receiver and at least one fifth parameter for the cell reselection reception level value. The cell reselection reception level value of the serving cell can be determined based on measurements of the serving cell using a low-power receiver and at least one fifth parameter for the cell reselection reception level value. At least one fifth parameter can be carried in SIB1. In some implementations, at least one fifth parameter of the cell reselection reception level value can be combined with... Figure 2A At least one first parameter in information 202 is the same, and the cell reselection reception level value is a measurement made using a low-power receiver.

[0096] In some implementations, at least one fifth parameter for the cell reselection reception level value may include a first minimum required reception level for measurements performed using a low-power receiver. For example, at least one fifth parameter for the cell reselection reception level value may include the minimum required RX level (dBm) in the cell for OFDM-LR measurements, i.e., the OFDM-LR specific Q... rxlevmin For example, using Q rxlevmin,OFDM-LR The at least one fifth parameter used for cell reselection reception level values ​​may also include an offset to a first minimum required reception level (i.e., Q). rxlevminoffset Terminal device 110 can be accessed via S... rxlev,OFDM-LR =Q rxlevmeas , OFDM-LR -(Q rxlevmin,OFDM-LR +Q rxlevminoffset )-P compensation -Qoffset temp To determine the cell reselection RX level value used for OFDM-LR measurements, where Q rxlevmeasOFDM-LR is the cell RX level value (RSRP) measured using a low-power receiver. rxlevminoffset and P compensation Defined in 3GPP TS 38.304, and Qoffset temp This is the temporary offset applied to the cell as specified in 3GPP TS 38.331. Parameter Q rxlevminoffset P compensation and Qoffset temp It can also be used to determine the cell reselection RX level value measured by MR when performing cell reselection using the master radio, for example, S rxlev =Q rxlevmeas -(Q rxlevmin +Q rxlevminoffset )-P compensation -Qoffset temp Q rxlevmeas It is the cell RX level value (RSRP) measured using the main radio receiver.

[0097] In some alternative implementations, at least one fifth parameter for the cell reselection reception level value may include: an additional offset to a second minimum required reception level for measurements taken using a low-power receiver. For example, at least one fifth parameter for the cell reselection reception level value may include to Q. rxlevmin Additional OFDM-LR specific offset (e.g., using Q) rxlevminoffset,OFDM-LR (Representation). At least one fifth parameter used for cell reselection reception level values ​​may also include a second minimum required reception level (e.g., Q). rxlevmin ) and the offset to the second minimum required reception level (e.g., Q) rxlevminoffset Terminal device 110 can be accessed via S... rxlev,OFDM-LR =Q rxlevmeas , OFDM-LR -(Q rxlevmin +Q rxlevminoffset +Q rxlevminoffset,OFDM-LR )-P compensation -Qoffset temp To determine the cell reselection RX level value used for OFDM-LR measurements, where Q rxlevmeas OFDM-LR is the cell RX level value (RSRP) measured using a low-power receiver. rxlevminoffset and P compensation Defined in 3GPP TS 38.304, and Qoffset temp This is the temporary offset applied to the cell as specified in 3GPP TS 38.331. Parameter Q rxlevmin Q rxlevminoffset P compensation and Qoffsettemp It can also be used to determine the cell reselection RX level value measured by MR when performing cell reselection using the master radio, such as S. rxlev =Q rxlevmeas -(Q rxlevmin +Q rxlevminoffset )-P compensation -Qoffset temp Q rxlevmeas It is the cell RX level value (RSRP) measured using the main radio receiver.

[0098] Terminal device 110 can be connected with Figure 2A In a similar manner to determining the cell selection quality value for OFDM-LR measurements in the embodiment of process 200A, the cell reselection quality value for OFDM-LR measurements on neighboring cells or serving cells is determined (e.g., S). qual,OFDM-LR ).

[0099] For example, terminal device 110 can receive at least one sixth parameter for a cell reselection quality value from network device 120, the cell reselection quality value being a measurement performed using a low-power receiver. The cell reselection quality value of the first neighboring cell can be determined based on measurements of the first neighboring cell using a low-power receiver and at least one sixth parameter of the cell reselection quality value. The cell reselection quality value of the serving cell can be determined based on measurements of the serving cell using a low-power receiver and at least one sixth parameter of the cell reselection quality value. At least one sixth parameter can be carried in SIB1. In some implementations, at least one sixth parameter of the cell reselection quality value can be combined with... Figure 2A The cell reselection quality value is the same as at least one of the second parameters in information 202, and the measurement is made using a low-power receiver.

[0100] In some implementations, at least one sixth parameter for cell reselection quality values ​​may include a first minimum required quality level for measurements performed using a low-power receiver. For example, at least one sixth parameter for cell reselection quality values ​​may include the minimum required quality level (dBm) in a cell for OFDM-LR measurements, i.e., the OFDM-LR-specific Q... qualmin For example, using Q qualmin,OFDM-LR The at least one sixth parameter used for cell reselection quality values ​​may also include an offset to the minimum required quality level (i.e., Q). qualminoffset Terminal device 110 can be accessed via S... qual,OFDM-LR =Q qualmeas , OFDM-LR -(Q qualmin,OFDM-LR +Q qualminoffset -Qoffset tempTo determine the cell reselection quality value used for OFDM-LR measurements, where Q qualmeas OFDM-LR is a cell quality value (RSRQ) measured using a low-power receiver. qualminoffset Defined in 3GPP TS 38.304, and Qoffset temp This is the temporary offset applied to the cell as specified in 3GPP TS 38.331. Parameter Q qualminoffset and Qoffset temp It can also be used to determine the cell reselection quality value measured by MR when using the master radio for cell reselection, such as S. qual =Q qualmeas -(Q qualmin +Q qualminoffset -Qoffset temp Q qualmeas It is the cell quality value (RSRQ) measured using the main radio receiver.

[0101] In some alternative implementations, at least one sixth parameter for the cell reselection quality value may include an additional offset to a second minimum desired quality level for measurements taken using a low-power receiver. For example, at least one sixth parameter for the cell reselection quality value may include a parameter to Q. qualmin Additional OFDM-LR specific offset (e.g., using Q) qualminoffset,OFDM-LR (Representation). At least one sixth parameter used for cell reselection quality values ​​may also include a second minimum required quality level (e.g., Q). qualmin and the offset to the second minimum required quality level (e.g., Q). qualminoffset Terminal device 110 can be accessed via S... qual,OFDM-LR =Q qualmeas OFDM-LR-(Q qualmin +Q qualminoffset +Q qualminoffset,OFDM-LR -Qoffset temp To determine the cell reselection quality value used for OFDM-LR measurements, where Q qualmeas OFDM-LR is a cell quality value (RSRQ) measured using a low-power receiver. qualminoffset Defined in 3GPP TS 38.304, and Qoffset temp This is the temporary offset applied to the cell as specified in 3GPP TS 38.331. Parameter Q qualmin Q qualminoffset and Qoffset temp It can also be used to determine the cell reselection quality value measured by MR when using the master radio for cell reselection, such as S. qual =Q qualmeas -(Qqualmin +Q qualminoffset -Qoffset temp Q qualmeas It is the cell quality value (RSRQ) measured using the main radio receiver.

[0102] In some embodiments, the frequency of the first neighboring cell is included in at least one frequency, and the frequency of the first neighboring cell has a higher priority than the frequency of the serving cell. If the terminal device 110 receives at least one third parameter associated with a third threshold for a cell reselection quality value measured using a low-power receiver on the serving cell, and if a predefined duration has elapsed since the terminal device 110 has camped on the serving cell, the terminal device 110 can determine the cell reselection quality value of the first neighboring cell and determine a first threshold associated with the frequency of the first neighboring cell among at least one first threshold. If the cell reselection quality value of the first neighboring cell is greater than the first threshold within a time interval, the terminal device 110 can determine that the cell reselection criterion is met by the first neighboring cell. In a more specific example, if the parameter OFDM-LRThresh... Serving, LowQ Or parameter Thresh Serving, LowQ and OFDM-LRThresh Q Broadcast in system information, and if more than 1 second has elapsed since the UE has camped on the current serving cell, then for OFDM-based LR measurements, in time interval T reselectionRAT During this period, cells with higher priority NR or EUTRAN RAT / frequency meet S qual,OFDM-LR OFDM-LRThresh X, HighQ Cell reselection to a cell on an NR frequency or inter-RAT frequency with a higher priority than the serving frequency should be performed. In another example, if the parameter OFDM-LRThresh... Serving, LowQ Or parameter Thresh Serving, LowQ and OFDM-LRThresh Q Broadcast in system information, and if more than 1 second has elapsed since the UE has camped on the current serving cell, then for OFDM-based LR measurements, in time interval T reselectionRAT During this period, cells with higher priority NR or EUTRAN RAT / frequency meet S qual,OFDM-LR Thresh X, HighQ -OFDM-LRThresh Q If so, cell reselection to a cell on an NR frequency or an inter-RAT frequency with a priority higher than the serving frequency should be performed.

[0103] In some embodiments, the frequency of the first neighboring cell is included in at least one frequency, and the frequency of the first neighboring cell has a higher priority than the frequency of the serving cell. If the terminal device 110 does not receive at least one third parameter associated with a third threshold for a cell reselection quality value measured using a low-power receiver on the serving cell, and if a predefined duration has elapsed since the terminal device 110 has camped on the serving cell, the terminal device 110 may determine a cell reselection reception level value for the first neighboring cell, and determine a second threshold associated with the frequency of the first neighboring cell among at least one second threshold. If the cell reselection reception level value of the first neighboring cell is greater than the second threshold within a time interval, the terminal device 110 may determine that the cell reselection criterion is met by the first neighboring cell. In a more specific example, if the parameter OFDM-LRThresh... Serving, LowQ Or parameter Thresh Serving, LowQ and OFDM-LRThresh Q Neither was broadcast in the system information, and if more than 1 second has elapsed since the UE has camped on the current serving cell, then for OFDM-based LR measurements, in time interval T... reselectionRAT During this period, cells with higher priority NR or EUTRAN RAT / frequency meet S rxlev,OFDM-LR OFDM-LRThresh X, HighP Cell reselection to a cell on an NR frequency or inter-RAT frequency with a higher priority than the serving frequency should be performed. In another example, if the parameter OFDM-LRThresh... Serving, LowQ Or parameter Thresh Serving, LowQ and OFDM-LRThresh Q Neither was broadcast in the system information, and if more than 1 second has elapsed since the UE has camped on the current serving cell, then for OFDM-based LR measurements, in time interval T... reselectionRAT During this period, cells with higher priority NR or EUTRAN RAT / frequency meet S rxlev,OFDM-LR Thresh X, HighP -OFDM-LRThresh P If so, cell reselection to a cell on an NR frequency or an inter-RAT frequency with a priority higher than the serving frequency should be performed.

[0104] In some embodiments, the frequency of the first neighboring cell is included in at least one frequency, and the frequency of the first neighboring cell has a lower priority than the frequency of the serving cell. If the terminal device 110 receives at least one third parameter associated with a third threshold for a cell reselection quality value measured using a low-power receiver on the serving cell, and if a predefined duration has elapsed since the terminal device 110 has camped on the serving cell, the terminal device 110 can determine the cell reselection quality value of the first neighboring cell and determine a first threshold associated with the frequency of the first neighboring cell among at least one first threshold. The terminal device 110 can also determine the cell reselection quality value of the serving cell. If the cell reselection quality value of the serving cell is less than the third threshold within a time interval, and the cell reselection quality value of the first neighboring cell is greater than the first threshold, the terminal device 110 can determine that the cell reselection criterion is met by the first neighboring cell. In a more specific example, if the parameter OFDM-LRThresh Serving, LowQ Or parameter Thresh Serving, LowQ and OFDM-LRThresh Q Broadcast in system information, and if more than 1 second has elapsed since the UE has camped on the current serving cell, then for OFDM-based LR measurements, in time interval T reselectionRAT During this period, the service community met S qual,OFDM-LR <OFDM-LRThresh Serving, LowQ And cells with lower priority NR or E-UTRAN RAT / frequency meet S qual,OFDM-LR OFDM-LRThresh X, LowQ Cell reselection to a cell on an NR frequency or an inter-RAT frequency with a lower priority than the serving frequency should be performed. In another example, if OFDM-LRThresh Serving, LowQ Or parameter Thresh Serving, LowQ and OFDM-LRThresh Q Broadcast in system information, and if more than 1 second has elapsed since the UE has camped on the current serving cell, then for OFDM-based LR measurements, in time interval T reselectionRAT During this period, the service community met S qual,OFDM-LR <Thresh Serving, LowQ -OFDM-LRThresh Q And cells with lower priority NR or E-UTRAN RAT / frequency meet S qual,OFDM-LR Thresh X, LowQ -OFDM-LRThresh Q Cell reselection to a cell on an NR frequency or an inter-RAT frequency with a priority lower than the serving frequency should be performed.

[0105] In some embodiments, the frequency of the first neighboring cell is included in at least one frequency, and the frequency of the first neighboring cell has a lower priority than the frequency of the serving cell. If the terminal device 110 does not receive at least one third parameter associated with a third threshold for a cell reselection quality value measured using a low-power receiver on the serving cell, and if a predefined duration has elapsed since the terminal device 110 has camped on the serving cell, the terminal device 110 may determine a cell reselection reception level value for the first neighboring cell, and determine a second threshold associated with the frequency of the first neighboring cell among at least one second threshold. The terminal device may also determine a cell reselection reception level value for the serving cell. If the cell reselection reception level value of the serving cell is less than a fourth threshold and the cell reselection reception level value of the first neighboring cell is greater than a second threshold within a time interval, the terminal device 110 may determine that the cell reselection criterion is met by the first neighboring cell. In a more specific example, if the parameter OFDM-LRThresh Serving, LowQ Or parameter Thresh Serving, LowQ and OFDM-LRThresh Q Neither was broadcast in the system information, and if more than 1 second has elapsed since the UE has camped on the current serving cell, then for OFDM-based LR measurements, in time interval T... reselectionRAT During this period, the service community met S rxlev,OFDM-LR <OFDM-LRThresh Serving, LowP And cells with lower priority NR or E-UTRANRAT / frequency meet S rxlev,OFDM-LR OFDM-LRThresh X, LowP Cell reselection to a cell on an NR frequency or an inter-RAT frequency with a lower priority than the serving frequency should be performed. In another example, if the parameter OFDM-LRThresh... Serving, LowQ Or parameter Thresh Serving, LowQ and OFDM-LRThresh Q Broadcast in system information, and if more than 1 second has elapsed since the UE has camped on the current serving cell, then for OFDM-based LR measurements, in time interval T reselectionRAT During this period, the service community met S rxlev,OFDM-LR <Thresh Serving, LowP -OFDM-LRThresh P And cells with lower priority NR or E-UTRAN RAT / frequency meet S rxlev,OFDM-LR Thresh X, LowP -OFDM-LRThresh PCell reselection to a cell on an NR frequency or an inter-RAT frequency with a priority lower than the serving frequency should be performed.

[0106] Terminal device 110 can be connected with Figure 2A In a similar manner to determining the cell selection quality value for OFDM-LR measurements in the embodiment of process 200A, the cell reselection quality value for OFDM-LR measurements on neighboring cells or serving cells is determined (e.g., S). qual,OFDM-LR ).

[0107] In some embodiments, in order to receive information 212, terminal device 110 may receive system information block 4 (SIB4) from network device 120, which includes at least a portion of information 212 associated with inter-frequency cell reselection. Alternatively or additionally, in order to receive information 212, terminal device 110 may receive system information block 5 (SIB5) from network device 120, which includes at least a portion of information 212 associated with inter-Radio Access Technology (RAT) cell reselection. In other words, cell reselection thresholds can be broadcast via SIB4 (for inter-frequency cell reselection) and SIB5 (for inter-RAT cell reselection).

[0108] Alternatively or additionally, terminal device 110 may receive a Radio Resource Control (RRC) release command from network device 120 and transition from RRC connected mode to RRC inactive mode or RRC idle mode. In some implementations, information 212 may be received prior to the transition. For example, information 212 may be carried in the RRC release command. In some other examples, information 212 may be carried in dedicated signaling.

[0109] Figure 2C The illustration shows a signaling diagram illustrating a third example process 200C according to some embodiments of the present disclosure. For discussion purposes, reference will be made to... Figure 1A Describe process 200C. Process 200C may involve terminal device 110 and network device 120. In some embodiments, terminal device 110 may include, for example: Figure 1B and Figure 1C The main radio 111 and low-power receiver 112 are shown. In some examples, the low-power receiver may be an OFDM-based receiver. It should be understood that, although in Figure 1AProcess 200C is described in the communication system 100, but this process can also be applied to other communication scenarios. The steps in process 200C are for illustrative purposes only and should not be construed as limiting the scope of the invention. One or more steps in process 200C may be omitted in some implementations without departing from the spirit of this disclosure. Additional operational steps not explicitly described in process 200C may be combined. Furthermore, the execution order of the steps in process 200C can be reordered or executed concurrently. Process 200C can be considered as... Figure 2A A specific example of process 200A.

[0110] like Figure 2C As shown, terminal device 110 determines (224) the first criterion to be applied for cell selection based on measurements performed using a low-power receiver of terminal device 110. Terminal device 110 performs (225) measurements of at least one cell using the low-power receiver, and determines (226) whether the first criterion is met based on the measurements of at least one cell using the low-power receiver. In some implementations, terminal device 110 may have already begun cell measurements using the low-power receiver before determining to apply the first criterion. Alternatively, cell measurements using the low-power receiver may begin when or after terminal device 110 determines to apply the first criterion. If terminal device 110 determines (226) that a first cell among at least one cell meets the first criterion, then terminal device 110 performs (227) cell selection to the first cell. In this way, cell selection performed by the low-power receiver can be enabled based on a specific criterion to ensure comparability between LR-based measurements and MR-based measurements, thereby improving communication performance while saving power consumption.

[0111] In some embodiments, network device 120 may send (221) first information 222 associated with a first standard to terminal device 110, and terminal device 110 may receive (223) first information 222 associated with a first standard from network device 120.

[0112] In some implementations, terminal device 110 may store received first information 222 associated with the first standard.

[0113] The first standard can be implemented as a cell selection standard associated with measurements performed using a low-power receiver, and the first information 222 associated with the first standard can be implemented as follows: Figure 2A Information 202 related to the cell selection criteria in process 200A. In some implementations, first information 222 related to the first criterion may be carried in SIB1.

[0114] In some embodiments, the determination of the application of the first criterion may be based on at least one of the following conditions or a combination thereof: the first information 222 is stored in the terminal device 110 in RRC inactive mode or RRC idle mode; or the terminal device 110 receives the first information 222 in RRC inactive mode or RRC idle mode; or the power saving requirements of the terminal device 110. For example, due to the availability of OFDM LR rules provided by the network and / or due to the implementation of UE, the terminal device 110 may decide to begin measurements for cell selection using its low-power receiver.

[0115] In some embodiments, terminal device 110 may perform cell measurements in RRC inactive mode or RRC idle mode, and determine the first criterion to be applied based on the state of terminal device 110. In some implementations, terminal device 110 may perform cell measurements in RRC inactive mode or RRC idle mode using its primary receiver. Alternatively or additionally, terminal device 110 may perform cell measurements in RRC inactive mode or RRC idle mode using its low-power receiver. In some examples, the state of terminal device 110 may include the radio conditions of terminal device 110 determined based on cell measurements performed in RRC inactive mode or RRC idle mode. Alternatively or additionally, the state of terminal device 110 may include power-saving requirements of terminal device 110. For example, terminal device 110 may decide to begin measurements for cell selection using its low-power receiver because terminal device 110 is experiencing good radio conditions and / or because LR measurements consume less power.

[0116] In some embodiments, terminal device 110 may determine whether a third criterion for measurement relaxation is met. The determination of the application of the first criterion may be based on at least one or a combination of the following conditions: the third criterion is fully or at least partially met; or the state of terminal device 110. In some examples, the state of terminal device 110 may include the radio conditions of terminal device 110 determined based on cell measurements of terminal device 110 in RRC inactive mode or RRC idle mode. Alternatively or additionally, the state of terminal device 110 may include power-saving requirements of terminal device 110. For example, terminal device 110 may decide to begin measurements for cell selection using its low-power receiver because the MRRRM measurement relaxation criteria are fully or partially met and / or because LR measurements consume less power.

[0117] In some embodiments, terminal device 110 may determine whether a third criterion for measurement relaxation is met. If the third criterion for measurement relaxation is met, terminal device 110 may determine whether at least one condition for offloading cell measurements to a low-power receiver is met. The determination of applying the first criterion may be based on one or a combination of at least one of the following conditions: at least one condition for offloading cell measurements to a low-power receiver is met; or the state of terminal device 110. In some examples, the state of terminal device 110 may include the radio conditions of terminal device 110 determined based on cell measurements of terminal device 110 in RRC inactive mode or RRC idle mode. Alternatively or additionally, the state of terminal device 110 may include power-saving requirements of terminal device 110. For example, terminal device 110 may decide to begin measurements for cell selection using its low-power receiver because the condition for offloading neighboring cell measurements to LR is met and / or because LR measurements consume less power.

[0118] In some embodiments, to determine whether a third criterion for measurement relaxation is met, terminal device 110 may perform cell measurements in RRC inactive mode or RRC idle mode, and determine whether the third criterion is met based on the cell measurements. In some implementations, terminal device 110 may use its main receiver to perform cell measurements in RRC inactive mode or RRC idle mode. Alternatively or additionally, terminal device 110 may use its low-power receiver to perform cell measurements in RRC inactive mode or RRC idle mode.

[0119] In some embodiments, the terminal device may enable / activate the low-power receiver based on at least one or a combination of the following conditions: the first information 222 is stored in the terminal device 110 in RRC inactive mode or RRC idle mode; or the terminal device 110 receives the first information 222 in RRC inactive mode or RRC idle mode. For example, the terminal device 110 may already be using its low-power receiver and decide to keep the low-power receiver running continuously because OFDM LR rules provided by the network are available. Alternatively, if the terminal device 110 is in RRC inactive mode or RRC idle mode, the terminal device 110 may enable the low-power receiver. In some implementations, the terminal device 110 may determine whether to activate / enable the low-power receiver in RRC idle / inactive mode based on the UE implementation. If the low-power receiver is enabled / activated, the terminal device 110 may begin cell measurements using the low-power receiver. Alternatively, if the terminal device 110 determines to apply a first standard, the terminal device 110 may enable the low-power receiver. In some implementations, if terminal device 110 determines that the first standard should be applied, terminal device 110 may disable the main receiver.

[0120] Figure 2D The illustration shows a signaling diagram illustrating a third example process 200D according to some embodiments of the present disclosure. For discussion purposes, reference will be made to... Figure 1A Process 200D is described. Process 200D may involve terminal device 110 and network device 120. In some embodiments, terminal device 110 may include, for example, Figure 1B and Figure 1C The main radio 111 and low-power receiver 112 are shown. In some examples, the low-power receiver may be an OFDM-based receiver. It should be understood that, although in Figure 1A Process 200D is described in the communication system 100, but this process can also be applied to other communication scenarios. The steps in process 200D are for illustrative purposes only and should not be construed as limiting the scope of the invention. In some implementations, one or more steps in process 200D may be omitted without departing from the spirit of this disclosure. Additional operational steps not explicitly described in process 200D may be combined. Furthermore, the execution order of the steps in process 200D can be reordered or executed concurrently. Process 200D can be considered as... Figure 2B A specific example of process 200B.

[0121] like Figure 2DAs shown, terminal device 110 determines (234) the second criterion to be applied for cell reselection based on measurements performed using a low-power receiver of terminal device 110. Terminal device 110 performs (235) measurements of at least one cell using the low-power receiver, and determines (236) whether the second criterion is met based on the measurements of at least one cell using the low-power receiver. In some implementations, terminal device 110 may have already begun cell measurements using the low-power receiver before determining that the second criterion should be applied. Alternatively, cell measurements using the low-power receiver may begin when or after terminal device 110 determines that the second criterion should be applied. If terminal device 110 determines (236) that a second cell among at least one cell meets the second criterion, then terminal device 110 performs (237) cell reselection to the second cell. In this way, cell reselection performed by the low-power receiver can be enabled based on a specific criterion to ensure comparability between LR-based measurements and MR-based measurements, thereby improving communication performance while saving power consumption.

[0122] In some embodiments, network device 120 may send (231) second information 232 associated with the second standard to terminal device 110, and terminal device 110 may receive (233) second information 232 associated with the second standard from network device 120.

[0123] In some implementations, terminal device 110 may store received second information 232 associated with the second standard.

[0124] exist Figure 2B In process 200B, the second standard can be implemented as a cell reselection standard associated with measurements performed using a low-power receiver, and the second information 232 associated with the second standard can be implemented as information 212 associated with the cell reselection standard. In some implementations, terminal device 110 can receive SIB4 from network device 120, which includes at least a portion of the second information 232 associated with inter-frequency cell reselection. Alternatively or additionally, terminal device 110 can receive SIB5 from network device 120, which includes at least a portion of the second information 232 associated with inter-Radio Access Technology (RAT) cell reselection. Alternatively or additionally, terminal device 110 can receive an RRC release command and transition from RRC connected mode to RRC inactive mode or RRC idle mode. The second information 232 is received before the transition. For example, the second information 232 can be carried in the RRC release command or can be carried in dedicated signaling.

[0125] In some embodiments, the determination of the application of the second criterion may be based on at least one of the following conditions or a combination thereof: the second information 232 is stored in the terminal device 110 in RRC inactive mode or RRC idle mode; or the terminal device 110 receives the second information 232 in RRC inactive mode or RRC idle mode; or the power saving requirements of the terminal device 110. For example, due to the availability of OFDM LR rules provided by the network and / or due to the implementation of UE, the terminal device 110 may decide to begin measurements for cell reselection using its low-power receiver.

[0126] In some embodiments, terminal device 110 may perform cell measurements in RRC inactive mode or RRC idle mode, and determine the application of a second standard based on the state of terminal device 110. In some implementations, terminal device 110 may perform cell measurements in RRC inactive mode or RRC idle mode using its primary receiver. Alternatively or additionally, terminal device 110 may perform cell measurements in RRC inactive mode or RRC idle mode using its low-power receiver. In some examples, the state of terminal device 110 may include the radio conditions of terminal device 110 determined based on cell measurements performed in RRC inactive mode or RRC idle mode. Alternatively or additionally, the state of terminal device 110 may include power-saving requirements of terminal device 110. For example, terminal device 110 may decide to begin measurements for cell reselection using its low-power receiver because terminal device 110 is experiencing good radio conditions and / or because LR measurements consume less power.

[0127] In some embodiments, terminal device 110 may determine whether a third criterion for measurement relaxation is met. The determination of the application of the second criterion may be based on at least one or a combination of the following conditions: the third criterion is fully or at least partially met; or the state of terminal device 110. In some examples, the state of terminal device 110 may include the radio conditions of terminal device 110 determined based on cell measurements of terminal device 110 in RRC inactive mode or RRC idle mode. Alternatively or additionally, the state of terminal device 110 may include power-saving requirements of terminal device 110. For example, terminal device 110 may decide to begin measurements for cell reselection using its low-power receiver because the MRRRM measurement relaxation criteria are fully or partially met and / or because LR measurements consume less power.

[0128] In some embodiments, terminal device 110 may determine whether a third criterion for measurement relaxation is met. If the third criterion for measurement relaxation is met, terminal device 110 may determine whether at least one condition for offloading cell measurements to a low-power receiver is met. The determination of the application of the second criterion may be based on one or a combination of at least one of the following conditions: at least one condition for offloading cell measurements to a low-power receiver is met; or the state of terminal device 110. In some examples, the state of terminal device 110 may include the radio conditions of terminal device 110 determined based on cell measurements of terminal device 110 in RRC inactive mode or RRC idle mode. Alternatively or additionally, the state of terminal device 110 may include power-saving requirements of terminal device 110. For example, terminal device 110 may decide to begin measurements for cell reselection using its low-power receiver because the condition for offloading neighboring cell measurements to LR is met and / or because LR measurements consume less power.

[0129] In some embodiments, to determine whether a third criterion for measurement relaxation is met, terminal device 110 may perform cell measurements in RRC inactive mode or RRC idle mode, and determine whether the third criterion is met based on the cell measurements. In some implementations, terminal device 110 may use its main receiver to perform cell measurements in RRC inactive mode or RRC idle mode. Alternatively or additionally, terminal device 110 may use its low-power receiver to perform cell measurements in RRC inactive mode or RRC idle mode.

[0130] In some embodiments, the terminal device may enable the low-power receiver based on at least one or a combination of the following conditions: the second information 232 is stored in the terminal device 110 in RRC inactive mode or RRC idle mode; or the terminal device 110 receives the second information 232 in RRC inactive mode or RRC idle mode. For example, the terminal device 110 may already be using its low-power receiver and decide to keep the low-power receiver running continuously because OFDM LR rules provided by the network are available. Alternatively, the terminal device 110 may enable the low-power receiver if it is in RRC inactive mode or RRC idle mode. Alternatively, the terminal device 110 may enable the low-power receiver if it determines that a second standard or at least one of the second standards should be applied. In some implementations, the terminal device 110 may disable the primary receiver if it determines that a second standard should be applied.

[0131] Figure 3AThe illustration depicts a first example process 300A of cell selection using low-power receiver measurements according to some embodiments of this disclosure. Process 300A may involve a terminal device (also referred to as a UE) 110 and a network device 120 (also referred to as a BS). UE 110 is equipped with an OFDM-based receiver (LR) capable of performing cell measurements. Process 300A can be considered as... Figure 2A Specific examples of process 200A are provided. The steps in process 300A are for illustrative purposes only and should not be construed as limiting the scope of the invention. In some implementations, one or more steps in process 300A may be omitted without departing from the spirit of this disclosure. Additional operational steps not explicitly described in process 300A may be combined. Furthermore, the execution order of the steps in process 300A may be reordered or executed concurrently. Additionally, steps in process 300A may be combined.

[0132] In process 300A, at step 301, BS 120 transmits broadcast information (SIB1 / SIBn) containing criteria for MR RRM measurement relaxations for cell measurements using LR, and furthermore, BS 120 provides cell selection criteria for OFDM-LR based measurements (e.g., OFDM-LR-specific criteria, or additional OFDM-LR-specific offsets relative to the cell selection criteria used for MR measurements). For example, the OFDM-LR-specific criteria or additional OFDM-LR-specific offsets for cell selection can be broadcast via SIB1.

[0133] At step 302, UE 110 stores the MRRRM measurement relaxation criteria and cell selection criteria for cell measurements using LR, including criteria specific to OFDM-LR-based measurements. At step 303, UE 110 performs cell measurements via the primary receiver. In some implementations, UE 110 may have already begun cell measurements via the primary receiver before receiving and storing the MRRRM measurement relaxation criteria and cell selection criteria for cell measurements using LR.

[0134] At step 304, UE 110 evaluates whether the criteria for MR RRM measurement relaxation for cell measurements using LR are met. At step 305, UE 110 determines that the conditions for offloading cell measurements to LR are met.

[0135] At step 306, UE 110 begins cell measurement via OFDM-based LR. At step 307, UE 110 evaluates cell selection taking into account the criteria received from BS 120 for the OFDM-based LR measurement. At step 308, UE 110 performs cell selection based on the selection criteria specified by BS 120 for the OFDM-based LR measurement.

[0136] In addition to or replacing the parameters related to the cell selection criteria used for MR measurements, BS 120 provides parameters related to the cell selection criteria used for OFDM-LR measurements.

[0137] If a cell is selected based on MR measurements, then the cell selection criterion S used for MR measurements is satisfied under the following conditions: S rxlev >0 and S qual >0 (1) in: S rxlev =Q rxlevmeas -(Q rxlevmin +Q rxlevminoffset )-P compensation -Qoffset temp (2) S qual =Q qualmeas -(Q qualmin +Q qualminoffset -Qoffset temp (3) The parameters in equations (1)-(3) are defined in 3GPP TS 38.304, as shown in Table 1.

[0138] By defining OFDM-LR specific standards (e.g., Q specific to OFDM-based LR measurements). rxlevmin Or Q qualmin (or an additional OFDM-LR specific offset relative to the cell selection criteria used for MR measurements) can enhance the cell selection criteria for OFDM-based LR measurements.

[0139] For example, if a cell is selected based on OFDM-LR measurements, then the cell selection criterion S for OFDM-LR measurements is satisfied under the following conditions: S rxlev,OFDM-LR >0 and S qual,OFDM-LR >0 (4) in: Srxlev,OFDM-LR =Q rxlevmeas -(Q rxlevmin,OFDM-LR +Q rxlevminoffset )-P compensation -Qoffset temp (5) S qual,OFDM-LR =Q qualmeas -(Q qualmin,OFDM-LR +Q qualminoffset -Qoffset temp (6) or S rxlev,OFDM-LR =Q rxlevmeas -(Q rxlevmin +Q rxlevminoffset +Q rxlevminoffset,OFDM-LR )-P compensation -Qoffset temp (7) S qual,OFDM-LR =Q qualmeas -(Q qualmin +Q qualminoffset +Q qualminoffset,OFDM-LR -Qoffset temp (8)

[0140] The OFDM-LR specific parameters used for cell selection criteria in equations (4)-(8) are shown in Table 2. Table 2

[0141] Figure 3B The illustration depicts a second example process 300B of cell selection using low-power receiver measurements according to some embodiments of this disclosure. Process 300B may involve a terminal device (also referred to as a UE) 110 and a network device 120 (also referred to as a BS). Process 300B can be considered as... Figure 2A A specific example of process 200A is provided. The steps in process 300B are for illustrative purposes only and should not be construed as limiting the scope of the invention. In some implementations, one or more steps in process 300B may be omitted without departing from the spirit of this disclosure. Additional operational steps not explicitly described in process 300B may be combined. Furthermore, the execution order of the steps in process 300B may be reordered or performed concurrently. Additionally, steps in process 300B may be combined. The same or similar reference numerals are used to indicate... Figure 3B The description in the middle has the same Figure 3A Elements or components that perform the same or similar operations as those described in the previous section will be omitted from the detailed description.

[0142] In process 300A, at step 310, UE 110 has already used LR for some other reason, or if UE 110 decides to keep LR running due to the implementation of the UE before the conditions for offloading cell measurements to LR are met. In other words, UE 110 can continuously use LR for cell measurements without resorting to MR-based measurements.

[0143] At step 301', BS 120 provides cell selection criteria for OFDM-LR-based measurements (e.g., OFDM-LR-specific criteria, or additional OFDM-LR-specific offsets relative to cell selection criteria used for MR measurements). For example, the OFDM-LR-specific criteria or additional OFDM-LR-specific offsets for cell selection can be broadcast via SIB1. At step 302', UE 110 stores cell selection criteria, including criteria specific to OFDM-LR-based measurements. At step 307, UE 110 evaluates cell selection taking into account the criteria received from BS 120 for OFDM-LR-based measurements. At step 308, UE 110 performs cell selection based on the selection criteria specified by BS 120 for OFDM-LR-based measurements. The cell selection criteria for OFDM-LR-based measurements can follow equations (4)-(8).

[0144] Figure 4 An example process 400 of cell selection using low-power receiver measurements according to some embodiments of this disclosure is illustrated. Process 400 may involve a terminal device (also referred to as a UE) 110 and a network device 120 (also referred to as a BS). UE 110 is equipped with an OFDM-based LR capable of performing neighboring cell measurements. Process 400 can be considered as... Figure 2B A specific example of process 200B is provided. The steps in process 400 are for illustrative purposes only and should not be construed as limiting the scope of the invention. In some implementations, one or more steps in process 400 may be omitted without departing from the spirit of this disclosure. Additional operational steps not explicitly described in process 400 may be combined. Furthermore, the execution order of the steps in process 400 may be reordered or executed concurrently. Additionally, the steps in process 400 may be combined.

[0145] In process 400, optionally, at step 411, UE 110 receives an RRC release message from BS 120. At step 412, UE 110 is released to idle / inactive mode.

[0146] At step 401, BS 120 transmits broadcast information (SIB1 / SIBn) containing criteria for relaxed MR RRM measurements for neighboring cell measurements using LR, and furthermore, BS 120 provides cell reselection criteria for OFDM-LR based measurements (e.g., OFDM-LR-specific criteria, or additional OFDM-LR-specific offsets relative to the cell reselection criteria used for MR measurements). For example, the OFDM-LR-specific criteria or additional OFDM-LR-specific offsets for cell reselection can be broadcast via SIB4 (for inter-frequency cell reselection) or SIB5 (for inter-RAT cell reselection).

[0147] Alternatively or additionally, before UE 110 is released to idle / inactive mode at step 412, UE 110 may also receive cell reselection criteria for OFDM-LR-based measurements via dedicated signaling. For example, at step 411, the cell reselection criteria for OFDM-LR-based measurements may be received in an RRC release message.

[0148] At step 402, UE 110 stores the MR RRM measurement relaxation criteria and cell reselection criteria for neighboring cell measurements using LR, including criteria specific to OFDM-LR-based measurements. At step 403, UE 110 performs measurements via the primary receiver, including neighboring cell measurements. In some implementations, UE 110 may have already begun cell measurements via the primary receiver before receiving and storing the MR RRM measurement relaxation criteria and cell reselection criteria for cell measurements using LR.

[0149] At step 404, UE 110 evaluates whether the criteria for relaxing MR RRM measurement for neighboring cell measurements using LR are met. At step 405, UE 110 determines that the conditions for offloading neighboring cell measurements to LR are met.

[0150] At step 406, UE 110 begins neighboring cell measurements via OFDM-based LR. At step 407, UE 110 evaluates cell reselection taking into account the criteria received from BS 120 for the OFDM-based LR measurements. At step 408, UE 110 performs a reselection to another cell based on the reselection criteria specified by BS 120 for the OFDM-based LR measurements.

[0151] In addition to or replacing the parameters related to the cell reselection criteria used for MR measurements, BS 120 provides parameters related to the cell reselection criteria used for OFDM-LR measurements.

[0152] For cell reselection on NR frequencies or inter-RAT frequencies with a priority higher or lower than the serving frequency (the frequency of the carrier currently camped by UE 110), if the cell reselection is based on MR measurements, the following criteria are defined as in 3GPP TS 38.304:

[0153] If threshServingLowQ is broadcast in the system information and more than 1 second has elapsed since the UE has been camped on the current serving cell, cell reselection to a cell on an NR frequency or inter-RAT frequency with a higher priority than the serving frequency should be performed in the following situations: - In time interval T reselectionRAT During this period, cells with higher priority NR or EUTRAN RAT / frequency meet S qual Thresh X, HighQ ;

[0154] Otherwise, if more than one second has elapsed since UE 110 has been camped on the current serving cell, cell reselection should be performed on a cell with a higher priority NR frequency or inter-RAT frequency in the following circumstances: - In time interval T reselectionRAT During this period, cells with higher priority RAT / frequency satisfy S rxlev Thresh X, HighP ;as well as More than 1 second has elapsed since the UE has been camped on the current serving cell.

[0155] If threshServingLowQ is broadcast in the system information and more than 1 second has elapsed since the UE has been camped on the current serving cell, cell reselection to a cell on an NR frequency or inter-RAT frequency with a lower priority than the serving frequency should be performed in the following situations: - In time interval T reselectionRAT During this period, the service community met S qual <Thresh Serving, LowQ And cells with lower priority NR or E-UTRAN RAT / frequency meet S qual Thresh X, LowQ .

[0156] Otherwise, if more than one second has elapsed since UE 110 has been camped on the current serving cell, cell reselection should be performed on a cell with a lower priority than the serving frequency on an NR frequency or an inter-RAT frequency in the following circumstances: - In time interval T reselectionRAT During this period, the service community met S rxlev <Thresh Serving, LowPAnd cells with lower priority RAT / frequency satisfy S rxlev Thresh X, LowP .

[0157] As shown in Table 3, the following parameters are defined in 3GPP TS 38.304. Table 3

[0158] If the cell reselection criteria are met by multiple cells with different priorities, then cell reselection to a higher priority RAT / frequency should take precedence over cell reselection to a lower priority RAT / frequency.

[0159] Cell reselection criteria for OFDM-based LR measurements can be defined by defining OFDM-LR specific criteria (e.g., Thresh criteria specific to OFDM-based LR measurements). X, HighQ Thresh X, HighP Thresh X, LowQ or Thresh X, LowP (or an additional OFDM-LR specific offset relative to the cell selection criteria used for MR measurements) to enhance the measurement.

[0160] For example, if cell reselection is based on OFDM-LR measurements, the following criteria are defined:

[0161] If an OFDM-LR specific threshServingLowQ is broadcast in the system information, and more than 1 second has elapsed since the UE has been camped on the current serving cell, then cell reselection to a cell on an NR frequency or inter-RAT frequency with higher priority than the serving frequency should be performed in the following cases: - For OFDM-based LR measurements, at time interval T reselectionRAT During this period, cells with higher priority NR or EUTRANRAT / frequency meet S qual,OFDM-LR OFDM-LRThresh X, HighQ ; or - For OFDM-based LR measurements, at time interval T reselectionRAT During this period, cells with higher priority NR or EUTRANRAT / frequency meet S qual,OFDM-LR Thresh X, HighQ -OFDM-LRThresh Q .

[0162] Otherwise, if more than one second has elapsed since UE 110 has been camped on the current serving cell, cell reselection should be performed on a cell with a higher priority NR frequency or inter-RAT frequency in the following circumstances: - For OFDM-based LR measurements, at time interval T reselectionRAT During this period, cells with higher priority NR or EUTRANRAT / frequency meet S rxlev,OFDM-LR OFDM-LRThresh X, HighP or - For OFDM-based LR measurements, at time interval T reselectionRAT During this period, cells with higher priority NR or EUTRANRAT / frequency meet S rxlev,OFDM-LR Thresh X, HighP -OFDM-LRThresh P .

[0163] If an OFDM-LR specific threshServingLowQ is broadcast in the system information, and more than 1 second has elapsed since the UE has camped on the current serving cell, then cell reselection to a cell on an NR frequency or inter-RAT frequency with a lower priority than the serving frequency should be performed in the following cases: - For OFDM-based LR measurements, at time interval T reselectionRAT During this period, the service community met S qual,OFDM-LR <OFDM-LRThresh Serving, LowQ And cells with lower priority NR or E-UTRAN RAT / frequency meet S qual,OFDM-LR OFDM-LRThresh X, LowQ or - For OFDM-based LR measurements, at time interval T reselectionRAT During this period, the service community met S qual,OFDM-LR <ThreshServing LowQ-OFDM-LRThresh Q And cells with lower priority NR or E-UTRAN RAT / frequency meet S qual,OFDM-LR Thresh X, LowQ -OFDM-LRThresh Q .

[0164] Otherwise, if more than one second has elapsed since UE 110 has been camped on the current serving cell, cell reselection should be performed on a cell with a lower priority than the serving frequency on an NR frequency or an inter-RAT frequency in the following circumstances: - For OFDM-based LR measurements, at time interval T reselectionRAT During this period, the service community met S rxlev,OFDM-LR <OFDM-LRThresh Serving, LowP And cells with lower priority RAT / frequency satisfy Srxlev,OFDM-LR OFDM-LRThresh X, LowP or - For OFDM-based LR measurements, at time interval T reselectionRAT During this period, the service community met S rxlev,OFDM-LR <Thresh Serving, LowP -OFDM-LRThresh P And cells with lower priority RAT / frequency satisfy S rxlev,OFDM-LR Thresh X, LowP -OFDM-LRThresh P .

[0165] If the cell reselection criteria are met by multiple cells with different priorities, then cell reselection to a higher priority RAT / frequency should take precedence over cell reselection to a lower priority RAT / frequency.

[0166] S of serving cells and cells on NR frequencies or inter-RAT frequencies with priorities higher or lower than the serving frequency rxlev,OFDM-LR and S qual,OFDM-LR It can be determined based on equations (4)-(8).

[0167] Table 4 defines the OFDM-LR specific parameters used for cell reselection criteria. Table 4

[0168] Figure 5 The illustration depicts an example process 500 for enabling cell selection / reselection using low-power receiver measurements according to some embodiments of this disclosure. Process 500 may involve a terminal device (also referred to as a UE) 110 and a network device 120 (also referred to as a BS). Process 500 can be considered as... Figure 2C or Figure 2D Specific examples of processes 200C or 200D are provided. The steps in process 500 are for illustrative purposes only and should not be construed as limiting the scope of the invention. In some implementations, one or more steps in process 500 may be omitted without departing from the spirit of this disclosure. Additional operational steps not explicitly described in process 500 may be combined. Furthermore, the execution order of the steps in process 500 may be reordered or performed concurrently. Additionally, the steps in process 500 may be combined. The same or similar reference numerals are used to indicate... Figure 5 The description in Figures 3A-4 Elements or components that perform the same or similar operations as those described in [the document], and their detailed descriptions will be omitted. Process 500 can be related to... Figures 3A-4 The process is achieved by combining 300A, 300B, or 400.

[0169] In procedure 500, optionally, at step 511, UE 110 receives an RRC release message from BS 120. At step 512, UE 110 is released to idle / inactive mode.

[0170] At step 501, BS 120 sends broadcast information (SIB1 / SIBn) containing criteria for relaxed MR RRM measurements for (neighboring) cell measurements using LR, and in addition, BS 120 provides cell selection / reselection criteria for OFDM-LR based measurements (e.g., OFDM-LR specific criteria, or additional OFDM-LR specific offset relative to the cell selection / reselection criteria used for MR measurements).

[0171] Alternatively or additionally, before UE 110 is released to idle / inactive mode at step 512, UE 110 may also receive cell selection / reselection criteria for OFDM-LR-based measurements via dedicated signaling. For example, at step 511, the cell selection / reselection criteria for OFDM-LR-based measurements may be received in an RRC release message.

[0172] At step 502, UE 110 stores the MR RRM measurement relaxation criteria and cell selection / reselection criteria for (neighboring) cell measurements using LR, including criteria specific to OFDM-LR-based measurements. At step 503, UE 110 performs measurements via the primary receiver, including (neighboring) cell measurements. In some implementations, UE 110 may have already begun cell measurements via the primary receiver before receiving and storing the MR RRM measurement relaxation criteria and cell selection / reselection criteria for cell measurements using LR.

[0173] At step 504, UE 110 evaluates whether the MR RRM measurement relaxation criteria for (neighboring) cell measurements using LR are met. At step 505, UE 110 determines that the conditions for offloading (neighboring) cell measurements to LR are met.

[0174] At step 506, UE 110 initiates (neighboring) cell measurements via OFDM-based LR. At step 507, UE 110 evaluates cell selection / reselection while taking into account the criteria received from BS 120 for the OFDM-based LR measurements. At step 508, UE 110 performs selection / reselection to another cell based on the selection / reselection criteria incidentally specified by BS 120 for the OFDM-based LR measurements.

[0175] In procedure 500, UE 110 can determine when to use OFDM-based LR for (neighboring) cell measurements based on an internally implemented algorithm. Furthermore, UE 110 can determine when to apply OFDM-LR-specific cell (re)selection criteria, rather than the general cell (re)selection criteria applicable to normal MR-based measurements.

[0176] In some implementations, at step 510, UE 110 has already used LR for some other reason, or if UE 110 decides to keep LR running continuously due to UE implementation. For example, UE 110 may determine to activate / enable LR based on UE implementation. If the low-power receiver is enabled / activated, UE 110 may begin cell measurements using LR. Optionally, at steps 501 and 502, BS 120 provides cell selection / reselection criteria for OFDM-LR-based measurements (e.g., OFDM-LR-specific criteria, or an additional OFDM-LR-specific offset relative to the cell selection / reselection criteria used for MR measurements), and UE 110 stores the cell selection / reselection criteria, including those specific to OFDM-LR-based measurements. Then, at step 507, UE 110 evaluates cell selection / reselection taking into account the criteria received from BS 120 for OFDM-LR-based measurements. At step 508, UE 110 performs cell selection / reselection based on the selection / reselection criteria specified by BS 120 for OFDM-based LR measurements. In other words, if the UE has already used LR for some other reason, or if the UE decides to keep LR running continuously due to the UE's implementation even before the conditions for offloading (neighboring) cell measurements to LR are met, the UE can decide to perform measurements and use the cell (re)selection criteria for OFDM-based LR (neighboring) cell measurements. The UE can continuously use LR for cell measurements without resorting to MR-based measurements.

[0177] In some implementations, at step 520, UE 110 decides to begin measurements using LR because OFDM-LR rules provided by BS 120 are available. Then, at step 506, UE 110 begins (neighboring) cell measurements via OFDM-based LR. At step 507, UE 110 evaluates cell selection / reselection considering the criteria received from BS 120 for OFDM-based LR measurements. At step 508, UE 110 performs selection / reselection to another cell based on the selection / reselection criteria specified by BS 120 for OFDM-based LR measurements. In other words, whenever the network provides OFDM LR rules to the UE, the UE can decide to always use LR measurements and applicable selection / reselection criteria, even if the MR RRM measurement relaxation criteria for (neighboring) cell measurements using LR are not met.

[0178] In some implementations, at step 530, UE 110 decides to begin measurements using LR because UE 110 is experiencing good radio conditions or because LR measurements consume less power. Step 530 can occur at any point in process 500. Then, at step 506, UE 110 begins (neighboring) cell measurements via OFDM-based LR. At step 507, UE 110 evaluates cell selection / reselection taking into account the criteria received from BS 120 for OFDM-based LR measurements. At step 508, UE 110 performs selection / reselection to another cell based on the selection / reselection criteria specified by BS 120 for OFDM-based LR measurements. In other words, UE can decide to use LR measurements when UE is in good radio conditions according to serving cell measurements and / or when it consumes less power compared to MR-based measurements (especially when UE needs to conserve power).

[0179] In some implementations, at step 540, based on the evaluation at step 504, UE 110 may decide to begin measurements using LR because the MR RRM measurement relaxation criteria are fully or partially met. Then, at step 506, UE 110 begins (neighboring) cell measurements via OFDM-based LR. At step 507, UE 110 evaluates cell selection / reselection considering the criteria received from BS 120 for OFDM-based LR measurements. At step 508, UE 110 performs selection / reselection to another cell based on the selection / reselection criteria specified by BS 120 for OFDM-based LR measurements. In other words, if the MR RRM relaxation criteria to LR are fully or partially met, the UE may, based on its internal implementation, decide to begin measurements using LR even before the conditions for offloading (neighboring) cell measurements to LR are met.

[0180] In all these cases, UE 110 can implement the cell (re)selection criteria for (neighboring) cell measurements based on OFDM-LR, regardless of whether the conditions for offloading (neighboring) cell measurements to LR are met.

[0181] According to some embodiments of this disclosure, the network can provide different cell selection criteria and inter-frequency and inter-RAT cell reselection criteria for OFDM-LR-based measurements to enable cell (re)selection via LR measurements, allowing the UE to make (re)selection decisions directly through LR-based measurements. In this way, cell (re)selection schemes via low-power receivers can be enabled while ensuring comparability between LR-based and MR-based measurements, thereby improving communication performance and saving power.

[0182] Figure 6 The illustration shows a schematic diagram of a method 600 implemented at a terminal device according to some embodiments of the present disclosure. For discussion purposes, it will be explained from the following... Figure 1A The angle description method 600 of the terminal device 110 shown.

[0183] like Figure 6As shown, at block 610, terminal device 110 receives information associated with cell selection criteria from network device, the cell selection criteria being measurements performed using a low-power receiver of the terminal device. At block 620, terminal device 110 performs measurements of at least one cell using the low-power receiver. At block 630, terminal device 110 determines whether the cell selection criteria are met based on the measurements of at least one cell using the low-power receiver. If, at block 640, terminal device 110 determines that the cell selection criteria are met by a first cell among at least one cell, then at block 650, terminal device 110 performs cell selection to the first cell.

[0184] In some embodiments, the information includes: at least one first parameter of a cell selection reception level value for a measurement performed using a low-power receiver; and at least one second parameter of a cell selection quality value for a measurement performed using a low-power receiver.

[0185] In some embodiments, at least one first parameter for the cell selection reception level value includes a first minimum required reception level for a measurement performed using a low-power receiver. At least one second parameter for the cell selection quality value includes a first minimum required quality level for a measurement performed using a low-power receiver. In some embodiments, at least one first parameter for the cell selection reception level value further includes an offset to the first minimum required reception level. At least one second parameter for the cell selection quality value further includes an offset to the first minimum required quality level.

[0186] In some embodiments, at least one first parameter for the cell selection reception level value includes an additional offset to a second minimum required reception level for measurements taken using a low-power receiver. At least one second parameter for the cell selection quality value includes an additional offset to a second minimum required quality level for measurements taken using a low-power receiver. In some embodiments, at least one first parameter for the cell selection reception level value further includes a second minimum required reception level and an offset to that second minimum required reception level. At least one second parameter for the cell selection quality value further includes a second minimum required quality level and an offset to that second minimum required quality level.

[0187] In some embodiments, to determine that a cell selection criterion is met by a first cell, the terminal device may determine the cell selection reception level value of the first cell based on at least one first parameter of the cell selection reception level value and a measurement of the first cell using a low-power receiver; and determine the cell selection quality value of the first cell based on at least one second parameter of the measurement of the first cell using a low-power receiver and the cell selection quality value of the first cell. Based on the determination that the cell selection reception level value of the first cell is positive and the cell selection quality value of the first cell is positive, the terminal device may determine that the cell selection criterion is met by the first cell.

[0188] In some embodiments, this information is carried in System Information Block 1 (SIB1).

[0189] In some embodiments, the terminal device may receive a Radio Resource Control (RRC) release command from the network device; and transition from RRC connected mode to RRC inactive mode or RRC idle mode. This information may be received prior to the transition. In some embodiments, this information is carried in the RRC release command.

[0190] In some embodiments, the terminal device further includes a main radio receiver. The low-power receiver is a receiver based on orthogonal frequency division multiplexing.

[0191] Figure 7 The illustration shows a schematic diagram of a method 700 implemented at a network device according to some embodiments of the present disclosure. For discussion purposes, [the following will be discussed]. Figure 1A The angular description method 700 for the network device 120 shown.

[0192] like Figure 7 As shown, in box 710, network device 120 sends information associated with cell selection criteria to terminal device, which is a measurement performed on a low-power receiver using the terminal device.

[0193] In some embodiments, the information includes: at least one first parameter of a cell selection reception level value for a measurement performed using a low-power receiver; and at least one second parameter of a cell selection quality value for a measurement performed using a low-power receiver.

[0194] In some embodiments, at least one first parameter for the cell selection reception level value includes a first minimum required reception level for a measurement performed using a low-power receiver. At least one second parameter for the cell selection quality value includes a first minimum required quality level for a measurement performed using a low-power receiver. In some embodiments, at least one first parameter for the cell selection reception level value further includes an offset to the first minimum required reception level. At least one second parameter for the cell selection quality value further includes an offset to the first minimum required quality level.

[0195] In some embodiments, at least one first parameter for the cell selection reception level value includes an additional offset to a second minimum required reception level for measurements taken using a low-power receiver. At least one second parameter for the cell selection quality value includes an additional offset to a second minimum required quality level for measurements taken using a low-power receiver. In some embodiments, at least one first parameter for the cell selection reception level value further includes a second minimum required reception level and an offset to that second minimum required reception level. At least one second parameter for the cell selection quality value further includes a second minimum required quality level and an offset to that second minimum required quality level.

[0196] In some embodiments, this information is carried in System Information Block 1 (SIB1).

[0197] In some embodiments, a network device may send a Radio Resource Control (RRC) release command to a terminal device. Secondary information may be sent before sending the RRC release command or may be included in the RRC release command.

[0198] In some embodiments, the terminal device further includes a main radio receiver. The low-power receiver is a receiver based on orthogonal frequency division multiplexing.

[0199] Figure 8 The illustration shows a schematic diagram of a method 800 implemented at a terminal device according to some embodiments of the present disclosure. For discussion purposes, it will be explained from the following... Figure 1A The angle description method 800 of the terminal device 110 shown.

[0200] like Figure 8As shown, at block 810, terminal device 110 receives information from network device associated with cell reselection criteria, which are measurements performed using a low-power receiver of the terminal device. At block 820, terminal device 110 performs measurements of at least one neighboring cell using the low-power receiver. At block 830, terminal device 110 determines whether the cell reselection criteria are met based on the measurements of at least one neighboring cell using the low-power receiver. If, at block 840, terminal device 110 determines that the cell reselection criteria are met by a first neighboring cell among at least one neighboring cell, then at block 850, terminal device 110 performs cell reselection to the first neighboring cell.

[0201] In some embodiments, the information includes at least one first parameter of at least one first threshold associated with a cell reselection quality value for measurements taken with at least one neighboring cell using a low-power receiver, wherein the at least one first threshold is associated with at least one frequency of the at least one neighboring cell. Alternatively or additionally, the information includes at least one second parameter for at least one second threshold associated with a cell reselection reception level value for measurements taken with at least one neighboring cell using a low-power receiver, wherein the at least one second threshold is associated with at least one frequency of the at least one neighboring cell. The frequency in the at least one frequency has a higher or lower priority than the frequency of the serving cell of the terminal device.

[0202] In some embodiments, at least one first parameter for at least one first threshold includes at least one first threshold.

[0203] In some embodiments, at least one first parameter for the first threshold includes: at least one threshold associated with a cell reselection quality value measured for at least one neighboring cell, wherein the at least one threshold is associated with at least one frequency of at least one neighboring cell; and an additional offset to the at least one threshold for measurements performed using a low-power receiver.

[0204] In some embodiments, at least one second parameter for at least one second threshold includes at least one second threshold.

[0205] In some embodiments, at least one second parameter for at least one second threshold includes: at least one threshold associated with a cell reselection reception level value measured for at least one neighboring cell, wherein the at least one threshold is associated with at least one frequency of at least one neighboring cell; and an additional offset to the at least one threshold for measurements performed using a low-power receiver.

[0206] In some embodiments, the terminal device may determine whether at least one third parameter of a third threshold is received from the network device, the third threshold being associated with a cell reselection quality value measured for the serving cell of the terminal device using a low-power receiver.

[0207] In some embodiments, at least one third parameter for the third threshold includes the third threshold.

[0208] In some embodiments, at least one third parameter for the third threshold includes: a threshold associated with a cell reselection quality value for a measurement of the serving cell using a primary receiver of the terminal device; and an additional offset to the threshold for a measurement performed using a low-power receiver.

[0209] In some embodiments, the frequency of the first neighboring cell is included in at least one frequency, and the frequency of the first neighboring cell has a higher priority than the frequency of the serving cell. To determine that the cell reselection criteria are met by the first neighboring cell, the terminal device may determine the cell reselection quality value of the first neighboring cell based on receiving at least one third parameter for a third threshold and based on a predefined duration that has elapsed since the terminal device has camped on the serving cell; and determine a first threshold associated with the frequency of the first neighboring cell among at least one first threshold. If the cell reselection quality value of the first neighboring cell is greater than the first threshold within a time interval, the terminal device may determine that the cell reselection criteria are met by the first neighboring cell.

[0210] In some embodiments, the frequency of the first neighboring cell is included in at least one frequency, and the frequency of the first neighboring cell has a higher priority than the frequency of the serving cell. To determine that the cell reselection criteria are met by the first neighboring cell, the terminal device may determine the cell reselection reception level value of the first neighboring cell based on the absence of at least one third parameter for a third threshold and based on a predefined duration that has elapsed since the terminal device has camped on the serving cell; and determine a second threshold associated with the frequency of the first neighboring cell among at least one second threshold. If the cell reselection reception level value of the first neighboring cell is greater than the second threshold within a time interval, the terminal device may determine that the cell reselection criteria are met by the first neighboring cell.

[0211] In some embodiments, the frequency of the first neighboring cell is included in at least one frequency, and the frequency of the first neighboring cell has a lower priority than the frequency of the serving cell. To determine that the cell reselection criteria are met by the first neighboring cell, the terminal device may determine the cell reselection quality value of the first neighboring cell based on receiving at least one third parameter for a third threshold and based on a predefined duration elapsed since the terminal device has camped on the serving cell; determine a first threshold associated with the frequency of the first neighboring cell among at least one first threshold; and determine the cell reselection quality value of the serving cell. If the cell reselection quality value of the serving cell is less than the third threshold and the cell reselection quality value of the first neighboring cell is greater than the first threshold within a time interval, the terminal device may determine that the cell reselection criteria are met by the first neighboring cell.

[0212] In some embodiments, the frequency of the first neighboring cell is included in at least one frequency, and the frequency of the first neighboring cell has a lower priority than the frequency of the serving cell. To determine that the cell reselection criteria are met by the first neighboring cell, the terminal device may determine a cell reselection reception level value of the first neighboring cell based on the absence of at least one third parameter for a third threshold and based on a predefined duration that has elapsed since the terminal device has camped on the serving cell; determine a second threshold associated with the frequency of the first neighboring cell in at least one second threshold; and determine the cell reselection reception level value of the serving cell. If the cell reselection reception level value of the serving cell is less than a fourth threshold and the cell reselection reception level value of the first neighboring cell is greater than the second threshold within a time interval, the terminal device may determine that the cell reselection criteria are met by the first neighboring cell. The fourth threshold is associated with the cell reselection reception level value measured using a low-power receiver for the serving cell of the terminal device.

[0213] In some embodiments, the terminal device may receive at least one fourth parameter of a fourth threshold from the network device. In some embodiments, the at least one fourth parameter for the fourth threshold includes the fourth threshold itself. In some embodiments, the at least one fourth parameter for the fourth threshold includes: a threshold associated with a cell reselection reception level value for measurements of the serving cell using the terminal device's primary receiver; and an additional offset to the threshold for measurements performed using a low-power receiver.

[0214] In some embodiments, the terminal device may receive from the network device at least one fifth parameter for a cell reselection reception level value, the cell reselection reception level value being a measurement performed using a low-power receiver. The cell reselection reception level value of the first neighboring cell is determined based on the measurement of the first neighboring cell using a low-power receiver and at least one fifth parameter for the cell reselection reception level value.

[0215] In some embodiments, the terminal device may receive from the network device at least one fifth parameter for a cell reselection reception level value, the cell reselection reception level value being a measurement performed using a low-power receiver. The cell reselection reception level value of the serving cell is determined based on the measurement of the serving cell using a low-power receiver and at least one fifth parameter for the cell reselection reception level value.

[0216] In some embodiments, at least one fifth parameter for the cell reselection reception level value includes: a first minimum required reception level for a measurement performed using a low-power receiver, and an offset to the first minimum required reception level.

[0217] In some embodiments, at least one fifth parameter for the cell reselection reception level value includes a second minimum required reception level, an offset to the second minimum required reception level, and an additional offset to the second minimum required reception level for measurements taken using a low-power receiver.

[0218] In some embodiments, at least one fifth parameter is carried in System Information Block 1 (SIB1).

[0219] In some embodiments, the terminal device may receive from the network device at least one sixth parameter for a cell reselection quality value, the cell reselection quality value being a measurement performed using a low-power receiver. The cell reselection quality value of the first neighboring cell is determined based on the measurement of the first neighboring cell using a low-power receiver and at least one sixth parameter for the cell reselection quality value.

[0220] In some embodiments, the terminal device may receive at least one sixth parameter from the network device for a cell reselection quality value, the cell reselection quality value being a measurement performed using a low-power receiver. The cell reselection quality value of the serving cell is determined based on measurements of the serving cell using a low-power receiver and at least one sixth parameter of the cell reselection quality value.

[0221] In some embodiments, at least one sixth parameter for the cell reselection quality value includes: a first minimum required quality level for measurements performed using a low-power receiver, and an offset to the first minimum required quality level.

[0222] In some embodiments, at least one sixth parameter for the cell reselection quality value includes a second minimum required quality level, an offset to the second minimum required quality level, and an additional offset to the second minimum required quality level for measurements taken using a low-power receiver.

[0223] In some embodiments, at least one sixth parameter is carried in System Information Block 1 (SIB1).

[0224] In some embodiments, in order to receive the information, the terminal device may receive System Information Block 4 (SIB4) from the network device, which includes at least a portion of information associated with inter-frequency cell reselection. Alternatively or additionally, in order to receive the information, the terminal device may receive System Information Block 5 (SIB5) from the network device, which includes at least a portion of information associated with inter-Radio Access Technology (RAT) cell reselection.

[0225] In some embodiments, the terminal device may receive a Radio Resource Control (RRC) release command from the network device; and transition from an RRC connected mode to an RRC inactive mode or an RRC idle mode, wherein this information is received prior to the transition. In some embodiments, this information is carried in the RRC release command.

[0226] In some embodiments, the terminal device further includes a main radio receiver. The low-power receiver is a receiver based on orthogonal frequency division multiplexing.

[0227] Figure 9 The illustration shows a schematic diagram of a method 900 implemented at a network device according to some embodiments of the present disclosure. For discussion purposes, [the following will be discussed]. Figure 1A The angular description method 900 for the network device 120 shown.

[0228] like Figure 9 As shown, at box 910, network device 120 sends information associated with a cell reselection criterion to terminal device, which is a measurement performed on a low-power receiver using the terminal device.

[0229] In some embodiments, the information includes at least one first parameter of at least one first threshold associated with a cell reselection quality value for measurements taken with at least one neighboring cell using a low-power receiver, wherein the at least one first threshold is associated with at least one frequency of the at least one neighboring cell. Alternatively or additionally, the information includes at least one second parameter for at least one second threshold associated with a cell reselection reception level value for measurements taken with at least one neighboring cell using a low-power receiver, wherein the at least one second threshold is associated with at least one frequency of the at least one neighboring cell. The frequency in the at least one frequency has a higher or lower priority than the frequency of the serving cell of the terminal device.

[0230] In some embodiments, at least one first parameter for at least one first threshold includes at least one first threshold.

[0231] In some embodiments, at least one first parameter for the first threshold includes: at least one threshold associated with a cell reselection quality value measured for at least one neighboring cell, wherein the at least one threshold is associated with at least one frequency of at least one neighboring cell; and an additional offset to the at least one threshold for measurements performed using a low-power receiver.

[0232] In some embodiments, at least one second parameter for at least one second threshold includes at least one second threshold.

[0233] In some embodiments, at least one second parameter for at least one second threshold includes: at least one threshold associated with a cell reselection reception level value measured for at least one neighboring cell, wherein the at least one threshold is associated with at least one frequency of at least one neighboring cell; and an additional offset to the at least one threshold for measurements performed using a low-power receiver.

[0234] In some embodiments, the network device may send to the terminal device at least one third parameter associated with a third threshold value for measuring the cell reselection quality of the serving cell of the terminal device using a low-power receiver. Alternatively or additionally, the network device may send to the terminal device at least one fourth parameter associated with a fourth threshold value associated with a fourth threshold value for measuring the cell reselection reception level of the serving cell of the terminal device using a low-power receiver.

[0235] In some embodiments, at least one third parameter used for the third threshold includes the third threshold.

[0236] In some embodiments, at least one third parameter for the third threshold includes: a threshold associated with a cell reselection quality value for a measurement of the serving cell using a primary receiver of the terminal device; and an additional offset to the threshold for a measurement performed using a low-power receiver.

[0237] In some embodiments, at least one fourth parameter for the fourth threshold includes the fourth threshold.

[0238] In some embodiments, at least one fourth parameter for the fourth threshold includes: a threshold associated with a cell reselection reception level value for a measurement of the serving cell using a primary receiver of the terminal device; and an additional offset to the threshold for a measurement performed using a low-power receiver.

[0239] In some embodiments, the network device may send at least one fifth parameter of the cell reselection reception level value to the terminal device, the cell reselection reception level value being a measurement performed using a low-power receiver.

[0240] In some embodiments, at least one fifth parameter for the cell reselection reception level value includes: a first minimum required reception level for a measurement performed using a low-power receiver, and an offset to the first minimum required reception level.

[0241] In some embodiments, at least one fifth parameter for the cell reselection reception level value includes a second minimum required reception level, an offset to the second minimum required reception level, and an additional offset to the second minimum required reception level for measurements taken using a low-power receiver.

[0242] In some embodiments, at least one fifth parameter is carried in System Information Block 1 (SIB1).

[0243] In some embodiments, the network device may send at least one sixth parameter of the cell reselection quality value to the terminal device, the cell reselection quality value being a measurement performed using a low-power receiver.

[0244] In some embodiments, at least one sixth parameter for the cell reselection quality value includes: a first minimum required quality level for measurements performed using a low-power receiver, and an offset to the first minimum required quality level.

[0245] In some embodiments, at least one sixth parameter for the cell reselection quality value includes a second minimum required quality level, an offset to the second minimum required quality level, and an additional offset to the second minimum required quality level for measurements taken using a low-power receiver.

[0246] In some embodiments, at least one sixth parameter is carried in System Information Block 1 (SIB1).

[0247] In some embodiments, to send the information, the network device may send System Information Block 4 (SIB4) to the terminal device, which includes at least a portion of information associated with inter-frequency cell reselection. Alternatively or additionally, to send the information, the network device may send System Information Block 5 (SIB5) to the terminal device, which includes at least a portion of information associated with inter-Radio Access Technology (RAT) cell reselection.

[0248] In some embodiments, a network device may send a Radio Resource Control (RRC) release command to a terminal device, wherein the information is sent before sending the RRC release command or is carried in the RRC release command.

[0249] In some embodiments, the terminal device further includes a main radio receiver. The low-power receiver is a receiver based on orthogonal frequency division multiplexing.

[0250] Figure 10The illustration shows a schematic diagram of a method 1000 implemented at a terminal device according to some embodiments of the present disclosure. For discussion purposes, it will be explained from the following... Figure 1A Angle description method 1000 for the terminal device 110 shown.

[0251] like Figure 10 As shown, at block 1010, terminal device 110 determines to apply at least one of a first criterion for cell selection based on cell measurements performed using a low-power receiver of the terminal device, or a second criterion for cell reselection based on cell measurements performed using a low-power receiver of the terminal device. At block 1020, terminal device 110 performs measurements of at least one cell using a low-power receiver. At block 1030, terminal device 110 determines whether the first criterion is met based on the measurements of at least one cell using a low-power receiver. If at block 1040, terminal device 110 determines that a first cell among at least one cell meets the first criterion, then at block 1050, terminal device 110 performs cell selection to the first cell. Alternatively, at block 1060, terminal device 110 determines whether the second criterion is met based on the measurements of at least one cell using a low-power receiver. If at block 1070, terminal device 110 determines that a second cell among at least one cell meets the second criterion, then at block 1080, terminal device 110 performs cell reselection to the second cell.

[0252] In some embodiments, the terminal device may receive at least one of first information associated with a first standard or second information associated with a second standard from the network device. In some embodiments, the terminal device may store at least one of the first information or the second information.

[0253] In some embodiments, the first information is carried in System Information Block 1 (SIB1).

[0254] In some embodiments, in order to receive the second information, the terminal device may receive System Information Block 4 (SIB4) from the network device, which includes at least a portion of the second information associated with inter-frequency cell reselection. Alternatively or additionally, in order to receive the second information, the terminal device may receive System Information Block 5 (SIB5) from the network device, which includes at least a portion of the second information associated with inter-Radio Access Technology (RAT) cell reselection.

[0255] In some embodiments, the terminal device may receive a Radio Resource Control (RRC) release command; and transition from RRC connected mode to RRC inactive mode or RRC idle mode. Secondary information is received prior to the transition.

[0256] In some embodiments, the second information is carried in the RRC release command.

[0257] In some embodiments, the terminal device may determine to apply at least one of the first or second standards based on at least one of the following: at least one of the first or second information has been stored in the RRC inactive mode or the RRC idle mode; at least one of the first or second information has been received in the RRC inactive mode or the RRC idle mode; or the terminal device’s power saving requirements.

[0258] In some embodiments, when it is determined that at least one of the first standard or the second standard should be applied, the terminal device may perform cell measurements in RRC inactive mode or RRC idle mode; and determine whether to apply at least one of the first standard or the second standard based on the state of the terminal device.

[0259] In some embodiments, when it is determined that at least one of the first standard or the second standard should be applied, the terminal device may determine whether a third standard for measuring relaxation is met; and determine whether to apply at least one of the first standard or the second standard based on at least one of the following: the third standard is fully met or at least partially met; or the state of the terminal device.

[0260] In some embodiments, in order to determine whether to apply at least one of the first or second criteria, the terminal device may determine whether a third criterion for measurement relaxation is met. If the third criterion is met, the terminal device may determine whether at least one condition for offloading cell measurements to a low-power receiver is met. The terminal device may determine whether to apply at least one of the first or second criteria based on at least one of the following: at least one condition for offloading cell measurements to a low-power receiver is met; or the state of the terminal device.

[0261] In some embodiments, in order to determine whether a third criterion for measurement relaxation is met, the terminal device may perform cell measurement in RRC inactive mode or RRC idle mode; and based on the cell measurement, determine whether the third criterion is met.

[0262] In some embodiments, the state of the terminal device includes at least one of the following: the radio conditions of the terminal device determined based on cell measurements of the terminal device in RRC inactive mode or RRC idle mode; or the power saving requirements of the terminal device.

[0263] In some embodiments, the terminal device may perform cell measurements in RRC inactive mode or RRC idle mode using at least one of the terminal device's low-power receiver or main receiver.

[0264] In some embodiments, the terminal device may enable the low-power receiver based on at least one of the following: having stored at least one of first information associated with a first standard or second information associated with a second standard in RRC inactive mode or RRC idle mode; or receiving at least one of first information associated with a first standard or second information associated with a second standard in RRC inactive mode or RRC idle mode.

[0265] In some embodiments, the terminal device may enable the low-power receiver based on determining that the terminal device is in RRC inactive mode or RRC idle mode.

[0266] In some embodiments, the terminal device may enable the low-power receiver based on determining that at least one of a first standard or a second standard should be applied.

[0267] In some embodiments, the terminal device further includes a main receiver, and the terminal device may disable the main receiver based on determining that at least one of a first standard or a second standard should be applied.

[0268] In some embodiments, the low-power receiver is a receiver based on orthogonal frequency division multiplexing.

[0269] In some embodiments, an apparatus capable of performing any of the methods 600 (e.g., terminal device 110) may include components for performing the corresponding steps of method 600. These components may be implemented in any suitable form. For example, the components may be implemented in a circuit system or a software module.

[0270] In some embodiments, the apparatus may include: components for receiving information associated with cell selection criteria from a network device, the cell selection criteria being measurements performed using a low-power receiver of a terminal device; components for performing measurements of at least one cell using the low-power receiver; components for determining whether the cell selection criteria are met based on the measurements of at least one cell using the low-power receiver; and components for performing cell selection to a first cell based on the determined cell selection criteria, the cell selection criteria being met by the first cell among at least one cell.

[0271] In some embodiments, the apparatus may further include components for performing other steps in some embodiments of method 600. In some embodiments, the components may include at least one processor and at least one memory including computer program code configured to, together with the at least one processor, implement the performance of the apparatus.

[0272] In some embodiments, an apparatus capable of performing any of the methods 700 (e.g., network device 120) may include components for performing the corresponding steps of method 700. These components may be implemented in any suitable form. For example, the components may be implemented in a circuit system or a software module.

[0273] In some embodiments, the apparatus may include components for transmitting information associated with a cell selection criterion to a terminal device, the cell selection criterion being a measurement performed using a low-power receiver of the terminal device.

[0274] In some embodiments, the apparatus may further include components for performing other steps in some embodiments of method 700. In some embodiments, the components may include at least one processor and at least one memory including computer program code configured to, together with the at least one processor, implement the performance of the apparatus.

[0275] In some embodiments, an apparatus capable of performing any of the methods 800 (e.g., terminal device 110) may include components for performing the corresponding steps of method 800. These components may be implemented in any suitable form. For example, the components may be implemented in a circuit system or a software module.

[0276] In some embodiments, the apparatus may include: components for receiving information associated with a cell reselection criterion from a network device, the cell reselection criterion being a measurement performed using a low-power receiver of a terminal device; components for performing measurements of at least one neighboring cell using the low-power receiver; components for determining whether the cell reselection criterion is met based on the measurements of at least one neighboring cell using the low-power receiver; and components for performing cell reselection to a first neighboring cell based on the determined cell reselection criterion, the cell reselection criterion being met by the first neighboring cell among at least one neighboring cell.

[0277] In some embodiments, the apparatus may further include components for performing other steps in some embodiments of method 800. In some embodiments, the components may include at least one processor and at least one memory including computer program code configured to, together with the at least one processor, implement the performance of the apparatus.

[0278] In some embodiments, an apparatus capable of performing any of the methods 900 (e.g., network device 120) may include components for performing the corresponding steps of method 900. These components may be implemented in any suitable form. For example, the components may be implemented in a circuit system or a software module.

[0279] In some embodiments, the apparatus may include components for transmitting information associated with a cell reselection criterion to a terminal device, the cell reselection criterion being a measurement performed using a low-power receiver of the terminal device.

[0280] In some embodiments, the apparatus may further include components for performing other steps in some embodiments of method 900. In some embodiments, the components may include at least one processor and at least one memory including computer program code configured to, together with the at least one processor, implement the performance of the apparatus.

[0281] In some embodiments, an apparatus capable of performing any of the methods 1000 (e.g., terminal device 110) may include components for performing the corresponding steps of method 1000. These components may be implemented in any suitable form. For example, the components may be implemented in a circuit system or a software module.

[0282] In some embodiments, the apparatus may include: components for determining at least one of a first criterion for cell selection based on cell measurements using a low-power receiver of a terminal device or a second criterion for cell reselection based on cell measurements using a low-power receiver of a terminal device; components for performing measurements of at least one cell using a low-power receiver; components for determining whether the first criterion or the second criterion is met based on measurements of at least one cell using a low-power receiver; and components for performing cell selection to a first cell based on determining the first criterion, which is met by the first cell among at least one cell; or components for performing cell reselection to a second cell based on determining the second criterion, which is met by the second cell among at least one cell.

[0283] In some embodiments, the apparatus may further include components for performing other steps in some embodiments of method 1000. In some embodiments, the components may include at least one processor and at least one memory including computer program code configured to, together with the at least one processor, implement the performance of the apparatus.

[0284] Figure 11 This is a simplified block diagram of a device 1100 suitable for implementing embodiments of the present disclosure. The device 1100 can be provided to implement a communication device, such as... Figure 1A The terminal device 110 or network device 120 shown. As shown, device 1100 includes one or more processors 1110, one or more memories 1120 coupled to processor 1110, and one or more communication modules 1140 coupled to processor 1100.

[0285] Communication module 1140 is used for bidirectional communication. Communication module 1140 has at least one antenna to facilitate communication. The communication interface can represent any interface required for communication with other network elements.

[0286] Processor 1110 can be any type suitable for a local technology network, and by way of non-limiting example, can include one or more of the following: general-purpose computer, special-purpose computer, microprocessor, digital signal processor (DSP), and processor based on a multi-core processor architecture. Device 1100 can have multiple processors, such as application-specific integrated circuit chips that are time-dependent on a clock synchronized with the main processor.

[0287] Memory 1120 may include one or more non-volatile memories and one or more volatile memories. Examples of non-volatile memories include, but are not limited to, read-only memory (ROM) 1124, electrically programmable read-only memory (EPROM), flash memory, hard disk, compact disc (CD), digital video disc (DVD), and other magnetic and / or optical storage devices. Examples of volatile memories include, but are not limited to, random access memory (RAM) 1122 and other volatile memories that do not persist during power outages.

[0288] Computer program 1130 includes computer-executable instructions that are executed by the associated processor 1110. Program 1130 may be stored in ROM 1120. Processor 1110 may perform any suitable actions and processes by loading program 1130 into RAM 1120.

[0289] The embodiments of this disclosure can be implemented via program 1130, enabling device 1100 to execute reference... Figures 2A to 10 Any process discussed in this disclosure. Embodiments of this disclosure may also be implemented by hardware or by a combination of software and hardware.

[0290] In some embodiments, program 1130 may be tangibly contained in a computer-readable medium, which may be included in device 1100 (such as memory 1120) or other storage device accessible to device 1100. Device 1100 may load program 1130 from the computer-readable medium into RAM 1122 for execution. The computer-readable medium may include any type of tangible non-volatile memory, such as ROM, EPROM, flash memory, hard disk, CD, DVD, etc. Figure 12 An example of a computer-readable medium 1200 in the form of a CD or DVD is shown. A program 1130 is stored on the computer-readable medium.

[0291] Generally, the various embodiments of this disclosure can be implemented using hardware or dedicated circuitry, software, logic, or any combination thereof. Some aspects can be implemented using hardware, while others can be implemented using firmware or software that can be executed by a controller, microprocessor, or other computing device. Although various aspects of the embodiments of this disclosure are illustrated and described as block diagrams, flowcharts, or using some other graphical representation, it should be understood that, as non-limiting examples, the blocks, apparatuses, systems, techniques, or methods described herein can be implemented using hardware, software, firmware, dedicated circuitry or logic, general-purpose hardware or controllers or other computing devices, or some combination thereof.

[0292] This disclosure also provides at least one computer program product tangibly stored on a non-transitory computer-readable storage medium. The computer program product includes computer-executable instructions, such as instructions included in a program module, which execute in a device on a target real or virtual processor to perform the above-mentioned... Figures 6-10 The method described is 600 to 1000. Typically, a program module includes routines, programs, libraries, objects, classes, components, data structures, etc., that perform specific tasks or implement specific abstract data types. In various embodiments, the functionality of a program module can be combined or split among program modules as needed. The machine-executable instructions of a program module can be executed on a local or distributed device. In a distributed device, a program module can reside on both local and remote storage media.

[0293] Program code used to perform the methods of this disclosure may be written in any combination of one or more programming languages. This program code may be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing apparatus, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may be executed entirely on a machine, partially on a machine, as a stand-alone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0294] In the context of this disclosure, computer program code or related data may be carried by any suitable carrier to enable a device, apparatus, or processor to perform the various processes and operations described above. Examples of carriers include signals, computer-readable media, etc.

[0295] Computer-readable media can be computer-readable signal media or computer-readable storage media. Computer-readable media can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any suitable combination of the foregoing. More specific examples of computer-readable storage media will include electrical connections having one or more wires, portable computer floppy disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable optical disc read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing. The term "non-transient" as used herein is a limitation on the medium itself (i.e., tangible, not signaling), not a limitation on the persistence of data storage (e.g., RAM and ROM).

[0296] Furthermore, although operations are described in a specific order, this should not be construed as requiring the operations to be performed in the specific order shown or sequentially, or to perform all of the shown operations to obtain the desired result. In some cases, multitasking and parallel processing may be advantageous. Similarly, while several specific implementation details are included in the foregoing discussion, these should not be construed as limiting the scope of this disclosure, but rather as descriptions of features that may be specific to particular embodiments. Certain features described in the context of a single embodiment may also be implemented in combination in a single embodiment. Conversely, the various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0297] Although this disclosure has been described in language specific to structural features and / or methodological actions, it should be understood that the disclosure as defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features or actions described above are disclosed as exemplary forms of implementing the claims.

Claims

1. A terminal device for communication, comprising: At least one processor; as well as At least one memory stores instructions that, when executed by the at least one processor, cause the terminal device to at least: Receive information from the network device associated with cell selection criteria, the cell selection criteria being a measurement performed on a low-power receiver using the terminal device; The low-power receiver is used to perform measurements of at least one cell; Based on the measurements of the at least one cell using the low-power receiver, it is determined whether the cell selection criteria are met; as well as Based on the determination that the cell selection criteria are met by a first cell among the at least one cells, cell selection is performed on the first cell.

2. The terminal device according to claim 1, wherein the information includes: At least one first parameter is used for a cell selection reception level value, the cell selection reception level value being a measurement performed using the low-power receiver; as well as At least one second parameter is used for a cell selection quality value, the cell selection quality value being a measurement performed using the low-power receiver.

3. The terminal device according to claim 2, The at least one first parameter used for selecting the reception level value of the cell includes: The first minimum required reception level for measurements performed using the low-power receiver; The at least one second parameter used for selecting the cell quality value includes: a first minimum required quality level for measurements performed using the low-power receiver.

4. The terminal device according to claim 3, The at least one first parameter used for selecting the reception level value of the cell further includes: Offset to the first minimum required reception level; The at least one second parameter used for selecting the cell quality value further includes: an offset to the first minimum required quality level.

5. The terminal device according to claim 2, wherein the at least one first parameter for selecting the cell reception level value includes: Additional offset to the second minimum required reception level for measurements taken using the low-power receiver; The at least one second parameter used for the cell selection quality value includes: an additional offset to a second minimum desired quality level for measurements taken using the low-power receiver; and The at least one first parameter used for selecting the reception level value of the cell further includes: the second minimum required reception level, and the offset to the second minimum required reception level; The at least one second parameter used for selecting the cell quality value further includes: the second minimum required quality level, and the offset to the second minimum required quality level.

6. The terminal device according to any one of claims 2 to 5, wherein the terminal device is configured to determine that the cell selection criterion is satisfied by the first cell by: The cell selection reception level value of the first cell is determined based on the following: the measurement of the first cell using the low-power receiver, and the at least one first parameter used for the cell selection reception level value; The cell selection quality value of the first cell is determined based on the following: the measurement of the first cell using the low-power receiver, and the at least one second parameter used for the cell selection quality value of the first cell; as well as Based on the determination that the cell selection reception level value of the first cell is positive and the cell selection quality value of the first cell is positive, it is determined that the cell selection criterion is satisfied by the first cell.

7. The terminal device according to any one of claims 1 to 5, wherein the information is carried in system information block 1SIB1; or The terminal device is further configured to: Receive Radio Resource Control (RRC) release command from the network device; and Switch from RRC connected mode to RRC inactive mode or RRC idle mode. The information mentioned therein is received before the transformation.

8. A network device for communication, comprising: At least one processor; as well as At least one memory storing instructions that, when executed by the at least one processor, cause the network device to at least: Information associated with cell selection criteria is sent to the terminal device, the cell selection criteria being measurements performed using a low-power receiver of the terminal device.

9. A method for communication executed by a terminal device, comprising: Receive information from the network device associated with cell selection criteria, the cell selection criteria being a measurement performed on a low-power receiver using the terminal device; The low-power receiver is used to perform measurements of at least one cell; Based on the measurements of the at least one cell using the low-power receiver, it is determined whether the cell selection criteria are met; as well as Based on the determination that the cell selection criteria are met by a first cell among the at least one cells, cell selection is performed on the first cell.

10. A method for communication performed by a network device, comprising: Sending information associated with cell selection criteria to the terminal device, the cell selection criteria being measurements performed using a low-power receiver of the terminal device, wherein the information includes: At least one first parameter for a cell selection reception level value, the cell selection reception level value being a measurement performed using the low-power receiver; and At least one second parameter is used for a cell selection quality value, the cell selection quality value being a measurement performed using the low-power receiver.

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