Communication method, communication device, communication system, storage medium, and program product

Abstract

Embodiments of the present disclosure provide a communication method, a communication device, a communication system, a storage medium, and a program product. The communication method comprises: in a power saving state, listening for an LP-WUS; and when a terminal is woken up, determining a second cell to which the terminal initiates random access, wherein the terminal camps on a first cell after being woken up, and the second cell comprises one of the following: the first cell and a cell determined by means of cell selection. The embodiments of the present disclosure can achieve random access of the woken-up terminal.

Description

Communication methods, communication equipment, communication systems, storage media and software products Technical Field

[0001] This disclosure relates to the field of wireless communication, and more particularly to a communication method, communication device, communication system, storage medium, and program product. Background Technology

[0002] In communication systems, to reduce terminal power consumption, a separate low-power transceiver can be configured in addition to the main transceiver. When the main transceiver is in sleep mode, the low-power transceiver can receive low-power signals. This reduces the terminal's power consumption.

[0003] Summary of the Invention

[0004] This disclosure provides a communication method, communication device, communication system, storage medium, and program product for determining the cell for random access after a terminal is woken up.

[0005] According to a first aspect of the present disclosure, a communication method is provided. This communication method can be executed by a terminal. The communication method includes: in a power-saving state, listening to a low-power wake-up signal (LP-WUS); and, when the terminal is woken up, determining a second cell for the terminal to initiate random access, wherein the terminal camps in a first cell after being woken up, and the second cell includes one of the following: the first cell, or a cell determined through cell selection.

[0006] According to a second aspect of the present disclosure, a communication device is provided. This communication device is configured to implement the communication method as described in the first aspect.

[0007] According to a third aspect of the present disclosure, a storage medium is provided. The storage medium stores instructions. When executed on a communication device, the instructions cause the communication device to perform the communication method as described in the first aspect.

[0008] According to a fourth aspect of the present disclosure, a program product is provided. When executed by a communication device, the program product causes the communication device to perform the communication method as described in the first aspect.

[0009] According to a fifth aspect of the present disclosure, a computer program is provided. When the computer program is run on a computer, it causes the computer to perform the communication method as described in the first aspect.

[0010] According to a sixth aspect of this disclosure, a chip or chip system is provided. The chip or chip system includes processing circuitry. The processing circuitry is configured to perform the communication method as described in the first aspect.

[0011] Through the embodiments of this disclosure, it is possible to determine the cell for random access after the terminal is woken up, thereby realizing random access of the terminal after wake-up.

[0012] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not constitute a limitation on the embodiments of this disclosure. Attached Figure Description

[0013] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments of the invention.

[0014] Figure 1 is a schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure.

[0015] Figure 2 is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure.

[0016] Figure 3 is an exemplary flowchart of a communication method provided according to an embodiment of the present disclosure.

[0017] Figure 4 is an exemplary structural diagram of a communication device provided according to an embodiment of the present disclosure.

[0018] Figure 5A is a schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure.

[0019] Figure 5B is a schematic diagram of the structure of a chip provided according to an embodiment of the present disclosure. Detailed Implementation

[0020] This disclosure provides a communication method, communication device, communication system, storage medium, and program product.

[0021] In a first aspect, embodiments of this disclosure provide a communication method. This communication method can be executed by a terminal. The communication method includes: in a power-saving state, monitoring LP-WUS; and, when the terminal is woken up, determining a second cell for the terminal to initiate random access, wherein the terminal camps in a first cell after being woken up, and the second cell includes one of the following: the first cell, or a cell determined through cell selection.

[0022] In this embodiment, after being woken up from power-saving mode, the terminal can determine the first cell as the second cell for initiating random access, or it can select a second cell for initiating random access. In this way, after being woken up from power-saving mode, the terminal can determine a suitable cell for communication with the master transceiver, thereby ensuring the communication quality of the master transceiver.

[0023] In conjunction with some embodiments of the first aspect, in some embodiments, the operation of determining the second cell for the terminal to initiate random access may include: determining the first cell as the second cell, wherein the cell identifier of the first cell is the same as the cell identifier of the third cell, and the third cell is the cell where the terminal was before entering the power-saving state.

[0024] In this embodiment, if the cell the terminal camps on after being woken up from power-saving mode is the same cell it was in before entering power-saving mode, the terminal can directly use that cell as a second cell to initiate random access. In this way, the terminal can obtain higher communication quality in that cell.

[0025] In conjunction with some embodiments of the first aspect, in some embodiments, the operation of determining the second cell for the terminal to initiate random access may include: determining the first cell as the second cell, wherein the cell identifier of the first cell is different from the cell identifier of the third cell, the third cell is the cell where the terminal was before entering the power saving state, and the first cell satisfies the first condition.

[0026] In this embodiment, if the cell the terminal camps on after being woken up from power-saving mode is different from the cell the terminal was in before entering power-saving mode, and if the cell the terminal camps on after being woken up from power-saving mode meets the first condition, then that cell is identified as the second cell to initiate random access. In this way, the cell determined by the terminal for random access can achieve higher communication quality.

[0027] In conjunction with some embodiments of the first aspect, in some embodiments, the operation of determining the second cell for the terminal to initiate random access may include: determining the second cell by cell selection based on first information, wherein the first information is used to determine at least one frequency point involved in the cell selection, the cell identifier of the first cell is different from the cell identifier of the third cell, the third cell is the cell where the terminal was before entering the power saving state, and the first cell does not meet the first condition.

[0028] In this embodiment, if the cell where the terminal camps after being woken up from the power-saving state is different from the cell where the terminal was before entering the power-saving state, and if the cell where the terminal camps after being woken up from the power-saving state does not meet the first condition, the terminal selects a suitable second cell through the main transceiver to initiate random access.

[0029] In conjunction with some embodiments of the first aspect, in some embodiments, the first information may include at least one of the following: frequency point information stored in the terminal; system information of the first cell; and frequency point information supported by the terminal.

[0030] In conjunction with some embodiments of the first aspect, in some embodiments, the first condition may include at least one of the following: the signal quality of the first signal received by the terminal in the first cell meets a first threshold; the frequency point of the first cell has high priority; the first cell allows the terminal to camp.

[0031] In conjunction with some embodiments of the first aspect, in some embodiments, the first signal may include at least one of the following: a synchronization signal and a physical broadcast channel (PBCH) block (SSB); and a tracking reference signal (TRS).

[0032] In conjunction with some embodiments of the first aspect, in some embodiments, the cell identifier of the third cell in which the terminal was located before entering the first state can be stored in the terminal.

[0033] In conjunction with some embodiments of the first aspect, in some embodiments, the terminal may include a master transceiver and a low-power wake-up receiver (LP-WUR).

[0034] In a second aspect, embodiments of this disclosure provide a communication device. The communication device includes a processing module. The processing module is configured to: in a power-saving state, monitor LP-WUS; and, when a terminal is woken up, determine a second cell for the terminal to initiate random access, wherein the terminal camps in a first cell after being woken up, and the second cell includes one of the following: the first cell, or a cell determined through cell selection.

[0035] In conjunction with some embodiments of the second aspect, in some embodiments, the processing module can be configured to: determine the first cell as the second cell, wherein the cell identifier of the first cell is the same as the cell identifier of the third cell, and the third cell is the cell where the terminal was located before entering the power saving state.

[0036] In conjunction with some embodiments of the second aspect, in some embodiments, the processing module can be configured to: determine the first cell as the second cell, wherein the cell identifier of the first cell is different from the cell identifier of the third cell, the third cell is the cell where the terminal was located before entering the power saving state, and the first cell satisfies the first condition.

[0037] In conjunction with some embodiments of the second aspect, in some embodiments, the processing module can be configured to: determine a second cell by cell selection based on first information, wherein the first information is used to determine at least one frequency point involved in cell selection, the cell identifier of the first cell is different from the cell identifier of the third cell, the third cell is the cell where the terminal was located before entering the power saving state, and the first cell does not meet the first condition.

[0038] In conjunction with some embodiments of the second aspect, in some embodiments, the first information may include at least one of the following: frequency point information stored in the terminal; system information of the first cell; and frequency point information supported by the terminal.

[0039] In conjunction with some embodiments of the second aspect, in some embodiments, the first condition may include at least one of the following: the signal quality of the first signal received by the terminal in the first cell meets a first threshold; the frequency point of the first cell has high priority; the first cell allows the terminal to camp.

[0040] In conjunction with some embodiments of the second aspect, in some embodiments, the first signal may include at least one of the following: SSB; TRS.

[0041] In conjunction with some embodiments of the second aspect, in some embodiments, the cell identifier of the third cell in which the terminal was located before entering the first state can be stored in the terminal.

[0042] In conjunction with some embodiments of the second aspect, in some embodiments, the terminal may include a main transceiver and an LP-WUR.

[0043] In a third aspect, embodiments of this disclosure provide a communication device. The communication device includes at least one processor and a memory storing instructions. When executed by the communication device, the instructions cause the communication device to implement the communication method as described in any of the first aspect and its possible embodiments.

[0044] In a fourth aspect, embodiments of this disclosure provide a storage medium storing instructions. When executed on a communication device, the instructions cause the communication device to perform the communication method as described in the first aspect and any of its possible embodiments.

[0045] In a fifth aspect, embodiments of this disclosure provide a program product. When executed by a communication device, this program product causes the communication device to perform the communication method as described in any of the first aspects and their possible embodiments.

[0046] In a sixth aspect, embodiments of this disclosure provide a computer program. When this computer program is run on a computer, it causes the computer to perform the communication method as described in any of the first aspect and its possible implementations.

[0047] In a seventh aspect, embodiments of this disclosure provide a chip or chip system. The chip or chip system includes processing circuitry. The processing circuitry is configured to perform the communication methods described in any of the first aspects and their possible implementations.

[0048] It is understood that the aforementioned communication devices, storage media, program products, computer programs, chips, and chip systems are all used to execute the communication methods provided in the embodiments of this disclosure. Therefore, the beneficial effects they can achieve can be referred to the beneficial effects in the corresponding methods, and will not be repeated here.

[0049] This disclosure provides a communication method, a communication device, a communication system, a storage medium, and a computer program product. In some embodiments, terms such as communication method, information processing method, and information transmission method can be used interchangeably; terms such as terminal, communication device, network function, and network entity can be used interchangeably; and terms such as communication system and information processing system can be used interchangeably.

[0050] This disclosure is not exhaustive, but merely illustrative of some embodiments, and is not intended to limit the scope of protection of this disclosure. Unless otherwise specified, each step in a particular embodiment can be implemented as an independent embodiment, and the steps can be arbitrarily combined. For example, a solution after removing some steps in a particular embodiment can also be implemented as an independent embodiment, and the order of the steps in a particular embodiment can be arbitrarily interchanged. Furthermore, the optional implementation methods in a particular embodiment can be arbitrarily combined; moreover, the embodiments can be arbitrarily combined, for example, some or all steps of different embodiments can be arbitrarily combined, and a particular embodiment can be arbitrarily combined with the optional implementation methods of other embodiments.

[0051] In the embodiments disclosed herein, unless otherwise specified or in case of logical conflict, the terminology and / or descriptions of the various embodiments are consistent and can be referenced by each other. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships.

[0052] The terminology used in the embodiments of this disclosure is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure.

[0053] In the embodiments of this disclosure, unless otherwise stated, elements expressed in the singular form, such as “a,” “one,” “a kind,” “the,” “the,” “the,” “the,” “the,” “the,” “the,” “the,” “this,” etc., can mean “one and only one,” or “one or more,” “at least one,” etc. For example, when articles such as “a,” “an,” and “the” are used in translation, the noun following the article can be understood as either a singular or a plural expression.

[0054] In the embodiments of this disclosure, "a plurality of" means two or more.

[0055] In some embodiments, terms such as “at least one (at least one, at least one item, at least one)” and “one or more” may be used interchangeably.

[0056] In some embodiments, the notation "at least one of A and B", "A and / or B", "A in one case, B in another", "in response to one case A, in response to another case B", etc., may include the following technical solutions depending on the situation: in some embodiments, A (execute A regardless of B); in some embodiments, B (execute B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed); in some embodiments, A and B (both A and B are executed). The same applies when there are more branches such as A, B, C, etc.

[0057] In some embodiments, the notation "A or B" may include the following technical solutions, depending on the situation: in some embodiments, A (execution of A regardless of B); in some embodiments, B (execution of B regardless of A); in some embodiments, execution is selected from A and B (A and B are selectively executed). The same applies when there are more branches such as A, B, C, etc.

[0058] The prefixes "first," "second," etc., used in the embodiments of this disclosure are merely for distinguishing different descriptive objects and do not impose restrictions on the position, order, priority, quantity, or content of the descriptive objects. The description of the descriptive objects is found in the claims or the context of the embodiments, and the use of prefixes should not constitute unnecessary restrictions. For example, if the descriptive object is a "field," the ordinal numbers preceding "field" in "first field" and "second field" do not restrict the position or order of the "fields." "First" and "second" do not restrict whether the "fields" they modify are in the same message, nor do they restrict the order of "first field" and "second field." Similarly, if the descriptive object is a "level," the ordinal numbers preceding "level" in "first level" and "second level" do not restrict the priority between "levels." Furthermore, the number of descriptive objects is not limited by ordinal numbers and can be one or more. For example, in "first device," the number of "devices" can be one or more. Furthermore, the objects modified by different prefixes can be the same or different. For example, if the object being described is "device", then "first device" and "second device" can be the same device or different devices, and their types can be the same or different. As another example, if the object being described is "information", then "second information" and "first information" can be the same information or different information, and their content can be the same or different.

[0059] In some embodiments, “including A,” “containing A,” “for indicating A,” and “carrying A” can be interpreted as directly carrying A or indirectly indicating A.

[0060] In some embodiments, the terms “in response to…”, “in response to determining…”, “in the case of…”, “when…”, “if…”, “if…”, etc., can be used interchangeably.

[0061] In some embodiments, the terms "greater than", "more than", "higher than", and "exceeding" can be used interchangeably. In some embodiments, the terms "greater than or equal to", "not less than", "more than or equal to", "not less than", "higher than or equal to", "not lower than", and "above" can be used interchangeably. In some embodiments, the terms "less than", "less than", and "lower than" can be used interchangeably. In some embodiments, the terms "less than or equal to", "not greater than", "less than or equal to", "not more than", "lower than or equal to", "not higher than", and "below" can be used interchangeably.

[0062] In some embodiments, devices, etc., can be interpreted as physical or virtual, and their names are not limited to the names recorded in the embodiments. Terms such as “device”, “equipment”, “circuit”, “network element”, “node”, “function”, “unit”, “section”, “system”, “network”, “chip”, “chip system”, “entity”, and “subject” can be used interchangeably.

[0063] In some embodiments, "network" can be interpreted as devices included in a network (e.g., access network devices, core network devices, etc.).

[0064] In some embodiments, the terms "access network device (AN device)," "radio access network device (RAN device)," "base station (BS)," "radio base station," "fixed station," "node," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "antenna panel," "antenna array," "cell," "macro cell," "small cell," "femto cell," "pico cell," "sector," "cell group," "serving cell," "carrier," "component carrier," and "bandwidth part (BWP)" can be used interchangeably.

[0065] In some embodiments, the terms "terminal", "terminal device", "user equipment (UE)", "user terminal", "mobile station (MS)", "mobile terminal (MT)", "subscriber station", "mobile unit", "subscriber unit", "wireless unit", "remote unit", "mobile device", "wireless device", "wireless communication device", "remote device", "mobile subscriber station", "access terminal", "mobile terminal", "wireless terminal", "remote terminal", "handset", "user agent", "mobile client", and "client" can be used interchangeably.

[0066] In some embodiments, access network devices, core network devices, or network devices can be replaced by terminals. For example, embodiments of this disclosure can also be applied to structures where communication between access network devices, core network devices, or network devices and terminals is replaced by communication between multiple terminals (e.g., device-to-device (D2D), vehicle-to-everything (V2X), etc.). In this case, the structure can also be configured such that the terminal has all or part of the functions of the access network device. Furthermore, terms such as "uplink" and "downlink" can be replaced with terms corresponding to communication between terminals (e.g., "sidelink"). For example, uplink channel, downlink channel, etc., can be replaced with sidelink channel, and uplink link, downlink, etc., can be replaced with sidelink link.

[0067] In some embodiments, the terminal may be replaced by an access network device, a core network device, or a network device. In this case, the access network device, core network device, or network device may also be configured to have all or some of the functions of the terminal.

[0068] In some embodiments, the acquisition of data, information, etc., may comply with the laws and regulations of the country where the location is situated.

[0069] In some embodiments, data, information, etc., may be obtained with the user's consent.

[0070] Furthermore, each element, each row, or each column in the table of this disclosure can be implemented as an independent embodiment, and any combination of any element, any row, or any column can also be implemented as an independent embodiment.

[0071] Figure 1 is a schematic diagram of the architecture of a communication system provided according to an embodiment of the present disclosure. As shown in Figure 1, the communication system 100 includes a terminal 101 and a network device 102.

[0072] In some embodiments, terminal 101 includes, but is not limited to, at least one of the following: mobile phone, wearable device, Internet of Things (IoT) device, car with communication function, smart car, tablet computer, computer with wireless transceiver function, virtual reality (VR) terminal device, augmented reality (AR) terminal device, wireless terminal device in industrial control, wireless terminal device in self-driving, wireless terminal device in remote medical surgery, wireless terminal device in smart grid, wireless terminal device in transportation safety, wireless terminal device in smart city, and wireless terminal device in smart home.

[0073] In some embodiments, network device 102 may be a node or device that connects a terminal to a wireless network. The network device may include at least one of the following: evolved NodeB (eNB), next-generation eNB (ng-eNB), next-generation NodeB (gNB), node B (NB), home node B (HNB), home evolved node B (HeNB), wireless backhaul device, radio network controller (RNC), base station controller (BSC), base transceiver station (BTS), base band unit (BBU), mobile switching center, base station in 6G communication system, open RAN, cloud RAN, satellite base station, base station in other communication systems, and access node in Wi-Fi system, but is not limited thereto.

[0074] In some embodiments, the technical solutions of this disclosure can be applied to the Open RAN architecture. In this case, the interfaces in the network devices involved in the embodiments of this disclosure can be transformed into internal interfaces of Open RAN. The processes and information interactions between these internal interfaces can be implemented by software or programs.

[0075] In some embodiments, the network device 102 may be composed of a central unit (CU) and a distributed unit (DU). The CU may also be called a control unit. The CU-DU structure can separate the protocol layer of the network device. Some of the protocol layer functions are centrally controlled by the CU, while the remaining part or all of the protocol layer functions are distributed in the DU and centrally controlled by the CU. However, this is not the only possibility.

[0076] In some embodiments, network device 102 may be a single device, multiple devices, or a group of devices. Network device 102 may be virtual or physical.

[0077] It is understood that the communication system described in this disclosure is for the purpose of more clearly illustrating the technical solutions of this disclosure, and does not constitute a limitation on the technical solutions provided in this disclosure. As those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in this disclosure are also applicable to similar technical problems.

[0078] The following embodiments of this disclosure can be applied to the communication system 100 shown in FIG1, or to some of the main bodies, but are not limited thereto. The main bodies shown in FIG1 are illustrative. The communication system may include all or some of the main bodies in FIG1, or may include other main bodies outside of FIG1. ​​The number and form of each main body are arbitrary. The connection relationship between the main bodies is illustrative. The main bodies may not be connected or may be connected. The connection can be in any way, it can be a direct connection or an indirect connection, it can be a wired connection or a wireless connection.

[0079] The embodiments disclosed herein can be applied to Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 5G new radio (NR), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile Communications (GSM), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), and IEEE 802.20, Ultra-Wideband (UWB), Bluetooth (a registered trademark), Public Land Mobile Network (PLMN) networks, Device-to-Device (D2D) systems, Machine-to-Machine (M2M) systems, Internet of Things (IoT) systems, Vehicle-to-Everything (V2X) systems, systems utilizing other communication methods, and next-generation systems built upon them, etc. Furthermore, multiple systems can be combined (e.g., a combination of LTE or LTE-A with 5G).

[0080] In communication systems, to further reduce UE power consumption, a Low-Power Wake-up Transceiver (LP-WUR or LR) mechanism can be employed. The LP-WUR mechanism provides a power-saving state for the UE. UEs supporting the LP-WUR mechanism can include a main receiver (MR) and an LP-WUR. In power-saving mode, the UE's main receiver can be placed in ultra-deep sleep, and the LP-WUR is enabled to listen for LP-WUS. If the UE's LP-WUR detects an LP-WUS signal targeting the UE, the UE can be woken up. The woken-up UE can then activate the main receiver and utilize it for normal communication.

[0081] In some embodiments, the LP-WUR cannot be used to perform cell reselection when the UE moves. Therefore, the UE needs to wake up the primary transceiver to perform cell reselection. In some embodiments, with the development of communication technology, it is possible for the UE to perform neighbor cell measurement and cell reselection in a power-saving state. For example, in a power-saving state, the UE can measure the low-power signals of neighboring cells using the LP-WUR and perform cell reselection based on the measurement results. In one example, the low-power signals may include a low-power synchronization signal (LP-SS), LP-WUS, and other low-power signals.

[0082] In some embodiments, the frequency bands supported by the primary transceiver and the LP-WUR in the UE may be different. Typically, the frequency bands supported by the LP-WUR may be a subset of the frequency bands supported by the primary transceiver.

[0083] In some embodiments, in Case 1, the LP-WUR and the primary transceiver can be on the same frequency band or carrier. In this case, the UE can determine the cell corresponding to the LP-SS through the cell identifier carried in the LP-SS while in power-saving mode. After the UE is woken up, the primary transceiver in the UE can directly receive signals such as SSB from that cell on the same frequency band or carrier as the LP-WUR. The cell where the UE camps can be the cell indicated by the cell identifier carried in the LP-SS.

[0084] In some embodiments, in Case 2, the frequency band or carrier of the LP-WUR can be bound to the frequency band or carrier of the primary transceiver. In this case, the UE can determine the cell corresponding to the LP-SS through the cell identifier carried in the LP-SS in power-saving mode. After the UE is woken up, the primary transceiver in the UE can directly receive signals such as SSB from that cell on the frequency band or carrier bound to the frequency band or carrier of the LP-WUR. The cell where the UE camps can be the cell indicated by the cell identifier carried in the LP-SS. In some embodiments, the spectrum resources of the legacy channel and the spectrum resources of the LP-SS can be different in this cell.

[0085] In some embodiments, in case 3, the LP-WUR and the primary transceiver may operate on different frequency bands or carriers, and there is no binding relationship between their frequency bands or carriers. In this case, the UE can determine the cell corresponding to the LP-SS through the cell identifier carried in the LP-SS in power-saving mode. However, after the UE is woken up, the UE cannot determine the frequency domain location of the primary transceiver in the cell corresponding to the LP-SS. At this time, the UE needs to perform a cell search to determine the cell. This process is the same as the UE's cell selection process. The cell where the UE camps can be determined through such cell selection.

[0086] In some embodiments, after being woken up, the UE may need to switch to RRC connected mode (RRC_connected) to enable data transmission, especially high-speed data transmission. In this case, it is necessary to determine the cell most suitable for the primary transceiver to operate for the UE. In some cases, the cell suitable for the primary transceiver may be different from the cell determined by the UE through cell reselection via LP-WUR.

[0087] Therefore, determining the cell to which a terminal will randomly access after being woken up is an urgent problem to be solved.

[0088] Figure 2 is an exemplary interaction diagram of a communication method provided according to an embodiment of the present disclosure. As shown in Figure 2, the communication method of this embodiment includes steps S201 to S207.

[0089] In step S201, terminal 101 enters the first state.

[0090] In some embodiments, terminal 101 may be a terminal that supports the LP-WUR mechanism.

[0091] In some embodiments, terminal 101 may include a master transceiver and an LP-WUR. In one example, the master transceiver may be used to implement conventional uplink and downlink transmissions. In one example, the LP-WUR may be used to receive low-power signals.

[0092] In some embodiments, terminal 101 may have two states, namely a first state and a second state. In some embodiments, in the first state, the main transceiver of terminal 101 may be inactive, and the LP-WUR of terminal 101 may be active. In one example, in the first state, the main transceiver may be in a deep sleep state, and the LP-WUR may be active. It is understood that, since the power consumption of the main transceiver is higher than that of the LP-WUR, the first state may also be referred to as a power-saving state. In some embodiments, in the second state, the main transceiver of terminal 101 may be active. At this time, the LP-WUR of terminal 101 may or may not be active. In one example, in the second state, only the main transceiver of terminal 101 may be active. In one example, in the second state, both the main transceiver and the LP-WUR of terminal 101 may be active. It is understood that the second state may also be referred to as a normal state or a regular state.

[0093] In some embodiments, the terminal 101 entering the first state may refer to the terminal 101 switching from the second state to the first state.

[0094] In some embodiments, terminal 101 may enter a first state when at least one of the following conditions is met: terminal 101 receives an indication message for switching to the first state, or a timer of terminal 101 times out.

[0095] In some embodiments, terminal 101 may receive indication information for instructing a switch to a first state. In one example, this indication information may be sent to terminal 101 by network device 102. In some embodiments, this indication information may be used to instruct terminal 101 to enter the first state.

[0096] In some embodiments, terminal 101 may determine to enter a first state based on a local timer. In one example, the timer may be used to time the period during which there is no data communication between terminal 101 and network device 102. In some embodiments, if the timer expires, terminal 101 may determine to switch from a second state to a first state.

[0097] In some embodiments, during the transition from the second state to the first state, the terminal 101 may set the main transceiver to a deep sleep state. In some embodiments, during the transition from the second state to the first state, the terminal 101 may also activate LP-WUR to listen for low-power signals.

[0098] In some embodiments, the low-power signal may include at least one of the following: LP-SS, LP-WUS.

[0099] In some embodiments, step S201 may include: the terminal 101 saving the cell identifier of the third cell it was in before entering the first state.

[0100] It should be noted that when terminal 101 enters the first state from the second state, the cell where terminal 101 camps immediately after entering the first state is still the cell it was in before entering the first state, for example, the third cell. In some embodiments, terminal 101 in the first state may experience movement or other events, causing terminal 101 to perform cell reselection via LP-WUR and enter another cell.

[0101] In some embodiments, before entering the first state, the terminal 101 in the second state may be located in a third cell. In this case, the cell identifier of the third cell in which the terminal 101 was located before entering the first state can be stored in the terminal 101.

[0102] In some embodiments, the cell identifier may include at least one of the following: Evolved UMTS terrestrial radio access network (E-UTRAN) cell global identifier (ECGI) and new radio cell global identifier (NCGI). It is understood that the cell identifier may also include other types of identifiers, and this disclosure does not impose specific limitations on the embodiments described.

[0103] In some embodiments, in a first state, terminal 101 can monitor LP-WUS. In one example, in a power-saving state, terminal 101 can monitor LP-WUS. In one example, in a power-saving state, terminal 101 can continuously monitor LP-WUS. In one example, in a power-saving state, terminal 101 can periodically monitor LP-WUS.

[0104] In step S202, network device 102 sends a synchronization signal to terminal 101.

[0105] In some embodiments, network device 102 may send a synchronization signal. In some embodiments, the synchronization signal may be sent by network device 102, but is not limited thereto, and may also be sent by other entities.

[0106] In some embodiments, terminal 101 may receive a synchronization signal. In some embodiments, the synchronization signal may be received by terminal 101, but is not limited thereto, and may also be received by other entities.

[0107] In some embodiments, a synchronization signal (SS) can be used to achieve synchronization between terminal 101 and network device 102.

[0108] In some embodiments, when terminal 101 is in a first state, the synchronization signal can be used to achieve synchronization between terminal 101 in the first state and network device 102. In some embodiments, the synchronization signal can be used to provide time reference information for terminal 101 in the first state to receive a wake-up signal.

[0109] In some embodiments, the synchronization signal may include a low-power synchronization signal (LP-SS). It is understood that the synchronization signal may also be other synchronization signals, and the embodiments disclosed herein are not specifically limited.

[0110] In some embodiments, terminal 101 can receive synchronization signals from network device 102 via LP-WUR.

[0111] In some embodiments, the synchronization signal may include a cell identifier. The cell identifier carried in the synchronization signal may be used to indicate a fourth cell.

[0112] In some embodiments, the fourth cell may be the cell where the terminal 101 in the first state is located. In some embodiments, the terminal 101 in the first state may receive a synchronization signal on at least one frequency point of the fourth cell via LP-WUR.

[0113] In some embodiments, the fourth cell may be the same as or different from the third cell. In some embodiments, after the terminal 101 enters the first state, it may still be in the third cell. In this case, the terminal 101 may be located in the third cell both in the second state and after entering the first state. For example, the cell identifier of the fourth cell may be the same as the cell identifier of the third cell, that is, the fourth cell may be the third cell. In some embodiments, after the terminal 101 enters the first state, it can perform cell reselection and determine the fourth cell through LP-WUR. In this case, the terminal 101 is located in the third cell in the second state, and may be located in the fourth cell after switching from the second state to the first state. For example, the cell identifier of the fourth cell may be different from the cell identifier of the third cell, that is, the fourth cell may be different from the third cell.

[0114] In some embodiments, the transmission of the synchronization signal can be periodic or aperiodic. In one example, network device 102 can transmit the synchronization signal periodically. For example, network device 102 can transmit the synchronization signal at a first period. For example, the first period can be determined based on at least one of the following: protocol agreement, operator configuration, or local configuration. In one example, network device 102 can transmit the synchronization signal when needed. For example, network device 102 can transmit the synchronization signal before transmitting a wake-up signal so that terminal 101 can receive the wake-up signal.

[0115] In step S203, network device 102 sends a wake-up signal to terminal 101.

[0116] In some embodiments, network device 102 may send a wake-up signal. In some embodiments, the wake-up signal may be sent by network device 102, but is not limited thereto, and may also be sent by other entities.

[0117] In some embodiments, terminal 101 may receive a wake-up signal. In some embodiments, the wake-up signal may be received by terminal 101, but is not limited thereto, and may also be received by other entities.

[0118] In some embodiments, network device 102 may send a wake-up signal to terminal 101 to wake up terminal 101 from a first state.

[0119] In some embodiments, the wake-up signal may include LP-WUS.

[0120] In some embodiments, terminal 101 can receive a wake-up signal from network device 102 via LP-WUR.

[0121] In some embodiments, terminal 101 may receive a wake-up signal sent by network device 102, taking into account the synchronization signal. For example, terminal 101 may receive the wake-up signal based on the time reference information provided by the synchronization signal.

[0122] In step S204, terminal 101 is woken up from the first state.

[0123] In some embodiments, terminal 101 can be woken up upon receiving a wake-up signal. In one example, terminal 101 can be woken up upon receiving a wake-up signal via LP-WUR.

[0124] In some embodiments, when terminal 101 needs to perform uplink transmission, terminal 101 can be actively woken up.

[0125] In some embodiments, when terminal 101 is woken up from a first state, terminal 101 can wake up the master transceiver. For example, LP-WUR can wake up the master transceiver of terminal 101.

[0126] In some embodiments, after the terminal 101 is woken up, the terminal 101 may enter a second state.

[0127] In some embodiments, after being woken up, terminal 101 may camp on a first cell. In some embodiments, after terminal 101 switches from a first state to a second state, terminal 101 in the second state may camp on the first cell. It is understood that the first cell on which terminal 101 camps may be considered as the first cell on which the main transceiver of terminal 101 camps.

[0128] In some embodiments, the awakened terminal 101 may be in an idle state (RRC_idle).

[0129] In some embodiments, the primary transceiver of terminal 101 and the LP-WUR can operate on the same frequency band or carrier. In this case, after being woken up, the primary transceiver of terminal 101 can camp in the first cell indicated by the cell identifier carried in the LP-SS and operate on the same frequency band or carrier as the LP-WUR. In this case, the first cell in which terminal 101 camps after being woken up can be a fourth cell.

[0130] In some embodiments, the main transceiver and LP-WUR of terminal 101 may operate on different frequency bands or carriers, and there may be a binding relationship between the frequency band or carrier where the main transceiver is located and the frequency band or carrier where the LP-WUR is located. In this case, after being woken up, the main transceiver of terminal 101 may camp in the first cell indicated by the cell identifier carried in the LP-SS and operate on the frequency band or carrier bound to the frequency band or carrier where the LP-WUR is located. In this case, the first cell where terminal 101 camps after being woken up may be a fourth cell.

[0131] In some embodiments, after being woken up, the terminal 101 master transceiver may camp in a first cell determined by means of a method such as cell selection. In this case, the first cell in which the terminal 101 camps after being woken up may be different from the fourth cell.

[0132] In some embodiments, the first cell and the third cell may be the same cell or different cells. In some embodiments, the first cell may be a fourth cell, and the fourth cell and the third cell may be the same cell, in which case the first cell and the third cell may be the same cell. In some embodiments, the first cell may be a fourth cell, and the fourth cell and the third cell may be different cells, in which case the first cell and the third cell may be different cells. In some embodiments, the first cell may be a cell determined by a method such as cell selection, and the cell determined by this method may be the third cell, in which case the first cell and the third cell may be the same cell. In some embodiments, the first cell may be a cell determined by a method such as cell selection, and the cell determined by this method may be different from the third cell, in which case the first cell and the third cell may be different cells.

[0133] In step S205, network device 102 sends a first signal to terminal 101.

[0134] In some embodiments, network device 102 may send a first signal. In some embodiments, the first signal may be sent by network device 102, but is not limited thereto, and may also be sent by other entities.

[0135] In some embodiments, terminal 101 may receive a first signal. In some embodiments, the first signal may be received by terminal 101, but is not limited thereto, and may also be received by other entities.

[0136] In some embodiments, the first signal can be used to determine the communication quality between terminal 101 and network device 102 in the second state. In some embodiments, the first signal can be received by the master transceiver of terminal 101.

[0137] In some embodiments, the first signal may be used by the network device 102 to send signaling and / or data to the terminal 101.

[0138] In some embodiments, the first signal may include at least one of the following: SSB, TRS.

[0139] In some embodiments, the SSB can be used to enable access for terminal 101.

[0140] In some embodiments, the SSB may include at least one of the following: a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH). In some embodiments, the PSS may be used to provide basic synchronization information. In some embodiments, the SSS may be used to provide more synchronization information. In some embodiments, the PBCH may include system information, such as a master information block (MIB).

[0141] In some embodiments, TRS can be used to assist terminal 101 in performing time tracking and / or frequency tracking. In some embodiments, TRS can be used by terminal 101 in a second state to perform time tracking and / or frequency tracking.

[0142] It should be noted that the first signal may also include other signals or information, and the comparison of the embodiments disclosed herein is not specifically limited.

[0143] It should be noted that step S205 is optional. In some embodiments, step S205 may not be performed.

[0144] In step S206, terminal 101 determines the second cell.

[0145] In some embodiments, terminal 101 may determine a second cell. Here, the second cell can be used by terminal 101 to initiate random access. In some embodiments, the second cell may be a cell determined by terminal 101 that is suitable for implementing data transmission, particularly high-speed data transmission.

[0146] In some embodiments, the second cell may include at least one of the following: the first cell, or a cell determined by cell selection.

[0147] In some embodiments, the first cell can be a third cell. In some embodiments, the cell identifier of the first cell and the cell identifier of the third cell can be the same. In this case, the terminal 101 can identify the first cell (i.e., the third cell) as the second cell. It is understood that when the first cell is the third cell, the cell in which the terminal 101 was located before entering the first state and the cell in which the terminal 101 is located after waking up from the first state can be the same cell. At this time, the terminal 101 has not moved out of the cell in which it was located before entering the first state, but is always located in the same cell. Therefore, the terminal 101 can determine that the third cell is a cell suitable for the main transceiver to work, and can directly initiate random access in the third cell.

[0148] In some embodiments, the first cell may be different from the third cell. In other words, the first cell and the third cell may be different cells. In some embodiments, the cell identifier of the first cell and the cell identifier of the third cell may be different. This means that the terminal 101 moves out of the cell it was in before entering the first state and enters another cell.

[0149] In some embodiments, if the first cell may be different from the third cell, the terminal 101 may determine the second cell based on a first condition. In some embodiments, whether the first cell can be used as the second cell for initiating random access may be determined based on the first condition.

[0150] In some embodiments, if the first cell meets a first condition, the first cell can be identified as the second cell. In other words, the terminal 101 can identify the first cell as the second cell.

[0151] In some embodiments, the first condition may include at least one of the following: the signal quality of the first signal received by the master transceiver of terminal 101 in the first cell meets a first threshold, the frequency point of the first cell has high priority, and the first cell allows terminal 101 to camp.

[0152] In some embodiments, the signal quality of the first signal may include the reception quality of the first signal at the main transceiver of terminal 101.

[0153] In some embodiments, the signal quality of the first signal may include at least one of the following: reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), and signal to interference plus noise ratio (SINR).

[0154] In some embodiments, the signal quality of the first signal may include at least one of the following: RSRP of SSB, RSRQ of SSB, SINR of SSB, RSRP of TRS, RSRQ of TRS, and SINR of TRS.

[0155] In some embodiments, the first threshold may include a threshold for at least one of the following: RSRP of SSB, RSRQ of SSB, SINR of SSB, RSRP of TRS, RSRQ of TRS, and SINR of TRS.

[0156] In some embodiments, the signal quality of the first signal satisfying the first threshold may include the RSRP of the SSB satisfying the threshold. In some embodiments, the signal quality of the first signal satisfying the first threshold may include the RSRQ of the SSB satisfying the threshold. In some embodiments, the signal quality of the first signal satisfying the first threshold may include the SINR of the SSB satisfying the threshold. In some embodiments, the signal quality of the first signal satisfying the first threshold may include both the RSRP and RSRQ of the SSB satisfying their respective thresholds. In some embodiments, the signal quality of the first signal satisfying the first threshold may include both the RSRP and SINR of the SSB satisfying their respective thresholds. In some embodiments, the signal quality of the first signal satisfying the first threshold may include both the RSRQ and SINR of the SSB satisfying their respective thresholds. In some embodiments, the signal quality of the first signal satisfying the first threshold may include the RSRP, RSRQ, and SINR of the SSB satisfying their respective thresholds.

[0157] In some embodiments, the signal quality of the first signal satisfying the first threshold may include the RSRP of the TRS satisfying the threshold. In some embodiments, the signal quality of the first signal satisfying the first threshold may include the RSRQ of the TRS satisfying the threshold. In some embodiments, the signal quality of the first signal satisfying the first threshold may include the SINR of the TRS satisfying the threshold. In some embodiments, the signal quality of the first signal satisfying the first threshold may include both the RSRP and RSRQ of the TRS satisfying their respective thresholds. In some embodiments, the signal quality of the first signal satisfying the first threshold may include both the RSRP and SINR of the TRS satisfying their respective thresholds. In some embodiments, the signal quality of the first signal satisfying the first threshold may include both the RSRQ and SINR of the TRS satisfying their respective thresholds. In some embodiments, the signal quality of the first signal satisfying the first threshold may include the RSRP, RSRQ, and SINR of the TRS satisfying their respective thresholds.

[0158] In some embodiments, the signal quality of the first signal satisfying the first threshold may include the RSRP of the SSB satisfying the threshold and the RSRP of the TRS satisfying the threshold. In some embodiments, the signal quality of the first signal satisfying the first threshold may include the RSRQ of the SSB satisfying the threshold and the RSRQ of the TRS satisfying the threshold. In some embodiments, the signal quality of the first signal satisfying the first threshold may include the SINR of the SSB satisfying the threshold and the SINR of the TRS satisfying the threshold. In some embodiments, the signal quality of the first signal satisfying the first threshold may include the RSRP of the SSB satisfying the threshold and the RSRQ and / or SINR of the TRS satisfying the threshold. In some embodiments, the signal quality of the first signal satisfying the first threshold may include the RSRQ of the SSB satisfying the threshold and the RSRP and / or SINR of the TRS satisfying the threshold. In some embodiments, the signal quality of the first signal satisfying the first threshold may include the SINR of the SSB satisfying the threshold and the RSRP and / or RSRQ of the TRS satisfying the threshold. In some embodiments, the signal quality of the first signal satisfying the first threshold may include the RSRP of the TRS satisfying the threshold and the RSRQ and / or SINR of the SSB satisfying the threshold. In some embodiments, the signal quality of the first signal satisfying the first threshold may include the RSRQ of the TRS satisfying the threshold, and the RSRP and / or SINR of the SSB satisfying the threshold.

[0159] In some embodiments, the signal quality of the first signal received by the main transceiver of terminal 101 in the first cell satisfying the first threshold may include at least one of the following: RSRP of SSB satisfying threshold, RSRQ of SSB satisfying threshold, SINR of SSB satisfying threshold, RSRP of TRS satisfying threshold, RSRQ of TRS satisfying threshold, and SINR of TRS satisfying threshold.

[0160] It is understandable that "meeting the threshold" can be interpreted as being greater than the threshold, or as being greater than or equal to the threshold. When the signal quality of the first signal is greater than or equal to the corresponding threshold, the communication quality between terminal 101 and network device 102 in the first cell meets the requirements.

[0161] In some embodiments, each of the first thresholds may be determined based on at least one of the following: protocol agreement, operator configuration, network configuration, or user-defined settings. In some embodiments, the first threshold may be preset. For example, the first threshold may be configured by the first cell via broadcast information. In some embodiments, the first threshold may be set by the terminal 101 itself.

[0162] In some embodiments, having a high priority frequency point of the first cell may include at least one of the following: the frequency point of the first cell is a high priority frequency point, or the priority of the frequency points in the neighboring cells of the first cell is less than or equal to the priority of the frequency point of the first cell.

[0163] In some embodiments, the frequency point of the first cell itself has high priority. For example, the frequency point in the first cell where terminal 101 camps may have the highest priority.

[0164] In some embodiments, the frequency of the first cell may have a higher priority or the same priority than the frequencies of its neighboring cells. In other words, the frequency of the neighboring cells of the first cell has a lower priority than the frequency of the first cell, or there are no higher priority frequencies among the neighboring cells of the first cell.

[0165] In some embodiments, the frequency priority of neighboring cells of the first cell can be determined based on the system information of the first cell. In some embodiments, the system information may include a system information block (SIB). The SIB may include a cellReselectionPriority parameter. The cellReselectionPriority parameter can be used to indicate the priority of the serving frequency in inter-frequency cell reselection. The value of the cellReselectionPriority parameter can be an integer between 0 and 7. For example, the value of the cellReselectionPriority parameter of the first cell can be 7.

[0166] In some embodiments, allowing terminal 101 to camp in the first cell may mean that terminal 101 can be allowed to camp in the first cell.

[0167] In some embodiments, the system information of the first cell can be used to determine whether the first cell allows terminal 101 to camp. In one example, the system information of the first cell may include a MIB. The CellBarred parameter in the MIB of the first cell can be used to indicate whether the first cell allows terminal 101 to camp. In one example, the value of the CellBarred parameter can be "barred", in which case terminal 101 is prohibited from camping in the first cell. In another example, the value of the CellBarred parameter can be "notbarred", in which case terminal 101 is allowed to camp in the first cell.

[0168] In some embodiments, information related to network power saving features of the first cell can be used to determine whether the first cell allows terminal 101 to camp. In one example, the information related to network power saving features can be the CellBarred parameter, used to indicate whether the first cell allows terminal 101, which supports network power saving features, to camp. In one example, the CellBarred parameter can be "barred", in which case terminal 101, which does not support network power saving features, is prohibited from camping in the first cell. In another example, the CellBarred parameter can be "notbarred", in which case terminal 101, which does not support network power saving features, is allowed to camp in the first cell.

[0169] In some embodiments, the first condition may include: the signal quality of the first signal received by the master transceiver of terminal 101 in the first cell meets a first threshold, and the first cell allows terminal 101 to camp. In some embodiments, if the signal quality of the first signal received by the master transceiver of terminal 101 in the first cell meets the first threshold and the first cell allows terminal 101 to camp, terminal 101 may determine that the first condition is met. In this case, the second cell may be the first cell.

[0170] In some embodiments, the first condition may include: the signal quality of the first signal received by the master transceiver of terminal 101 in the first cell meets a first threshold, the frequency point of the first cell has high priority, and the first cell allows terminal 101 to camp. In some embodiments, if the signal quality of the first signal received by the master transceiver of terminal 101 in the first cell meets the first threshold, the frequency point of the first cell has high priority, and the first cell allows terminal 101 to camp, terminal 101 can determine that the first condition is met. In this case, the second cell may be the first cell.

[0171] In some embodiments, if the first cell does not meet the first condition, the terminal 101 may select a suitable cell to camp on as the second cell. In some embodiments, if the first cell does not meet the first condition, the terminal 101 may determine the second cell by cell selection based on the first information.

[0172] In some embodiments, the first cell may not meet the first condition if at least one of the following conditions is not met: the signal quality of the first signal received by the main transceiver of terminal 101 in the first cell does not meet the first threshold, there is a frequency point with a higher priority than the frequency point of the first cell, or the first cell does not allow terminal 101 to camp.

[0173] In some embodiments, the first information may include at least one of the following: frequency point information stored in the terminal 101, system information of the first cell, and frequency point information supported by the terminal 101.

[0174] In some embodiments, terminal 101 may locally store frequency information of one or more cells. For example, terminal 101 may store frequency information of a first cell and / or frequency information of at least one neighboring cell of the first cell. In some embodiments, terminal 101 may perform cell selection based on the locally stored frequency information to determine a second cell.

[0175] In some embodiments, the system information of the first cell may be used to indicate the frequency information of the first cell and / or the frequency information of at least one neighboring cell of the first cell. In some embodiments, the system information of the first cell may include an SIB, and the SIB may contain the frequency information of the neighboring cells. In some embodiments, the terminal 101 may perform cell selection based on the frequency information contained in the system information of the first cell to determine a second cell.

[0176] In some embodiments, terminal 101 may support one or more frequency points. In some embodiments, terminal 101 may perform a blind search based on the one or more supported frequency points to determine the synchronization signal on each frequency point; then, a second cell is determined based on the result of the blind search.

[0177] In step S207, terminal 101 sends a first message to network device 102.

[0178] In some embodiments, terminal 101 may send a first message. In some embodiments, the first message may be sent by terminal 101, but is not limited thereto, and may also be sent by other entities.

[0179] In some embodiments, network device 102 may receive a first message. In some embodiments, the first message may be received by network device 102, but is not limited thereto, and may also be received by other entities.

[0180] In some embodiments, the first message can be used by terminal 101 to initiate random access to network device 102.

[0181] In some embodiments, the first message may be a message during the random access procedure. In some embodiments, the first message may be one of the following: a Msg1 message or a MsgA message. In one example, the first message may be a Msg1 message in a 4-step random access procedure. For example, the first message may include a preamble sequence for random access. In one example, the first message may be a MsgA message in a 2-step random access procedure. For example, the first message may include a preamble sequence for random access and a payload for the physical uplink shared channel (PUSCH).

[0182] The communication method of this embodiment can be implemented through steps S201 to S207.

[0183] In some embodiments, the names of information, etc., are not limited to the names described in the embodiments. Terms such as "information", "message", "signal", "signaling", "report", "configuration", "indication", "instruction", "command", "channel", "parameter", "domain", "field", "symbol", "symbol", "codebook", "codeword", "codepoint", "bit", "data", "program", and "chip" can be used interchangeably.

[0184] In some embodiments, the terms "uplink", "uplink", and "physical uplink" can be used interchangeably, as can the terms "downlink", "downlink", and "physical downlink".

[0185] In some embodiments, the terms “radio”, “wireless”, “radio access network (RAN)”, “access network (AN)”, and “RAN-based” can be used interchangeably.

[0186] In some embodiments, "synchronization signal (SS)," "synchronization signal block (SSB)," "reference signal (RS)," "pilot," and "pilot signal" are interchangeable.

[0187] In some embodiments, terms such as “moment,” “point in time,” “time,” and “time location” can be used interchangeably, as can terms such as “duration,” “segment,” “time window,” “window,” and “time.”

[0188] In some embodiments, “get,” “obtain,” “receive,” “transmit,” “bidirectional transmission,” and “send and / or receive” can be used interchangeably and can be interpreted as receiving from other entities, obtaining from protocols, obtaining from higher layers, obtaining through self-processing, or autonomous implementation, among other meanings.

[0189] In some embodiments, terms such as “send,” “transmit,” “report,” “distribute,” “transmit,” “bidirectional transmission,” “send and / or receive” can be used interchangeably.

[0190] In some embodiments, terms such as "certain", "preset", "default", "set", "indicated", "a certain", "any", and "first" can be used interchangeably. "Certain A", "preset A", "default A", "set A", "indicated A", "a certain A", "any A", and "first A" can be interpreted as A pre-defined in a protocol or the like, or as A obtained through setting, configuration, or instruction, or as specific A, a certain A, any A, or first A, but are not limited thereto.

[0191] In some embodiments, the determination or judgment can be made by a value represented by 1 bit (0 or 1), or by a true or false value (boolean), or by a comparison of numerical values ​​(e.g., a comparison with a predetermined value), but is not limited thereto.

[0192] In some embodiments, terms such as “frequency band”, “frequency range”, and “spectrum range” can be used interchangeably.

[0193] In some embodiments, the terms "transceiver", "receiver", and "receiving device" may be used interchangeably.

[0194] The communication method involved in the embodiments of this disclosure may include at least one of steps S201 to S207. For example, step S206 may be implemented as a standalone embodiment. For example, a combination of steps S204 and S206 may be implemented as a standalone embodiment. For example, a combination of steps S201, S204, and S206 may be implemented as a standalone embodiment. For example, a combination of steps S203, S204, and S206 may be implemented as a standalone embodiment. For example, a combination of steps S204, S205, and S206 may be implemented as a standalone embodiment. For example, a combination of steps S204, S206, and S207 may be implemented as a standalone embodiment. For example, a combination of steps S202, S203, S204, and S206 may be implemented as a standalone embodiment. For example, a combination of steps S201, S202, S203, S204, and S206 may be implemented as a standalone embodiment. For example, combinations of steps S202, S203, S204, S205, and S206 can be implemented as independent embodiments. It should be noted that possible independent embodiments consisting of one or more steps S201 to S207 are not limited thereto.

[0195] In some embodiments, steps S201, S202, S203, S204, S205, and S207 are optional and may be omitted or substituted in different embodiments.

[0196] In some embodiments, other optional implementations described before or after the specification corresponding to FIG2 may be referred to.

[0197] Figure 3 is an exemplary flowchart of a communication method provided according to an embodiment of the present disclosure. This communication method is executed by a terminal. As shown in Figure 3, the communication method of this embodiment includes steps S301 and S302.

[0198] In step S301, in power-saving mode, LP-WUS is monitored.

[0199] The optional implementation of step S301 can be found in the optional implementation of step S201 in Figure 2, and other related parts in the embodiments involved in Figure 2, which will not be repeated here.

[0200] In step S302, when the terminal is woken up, a second cell for the terminal to initiate random access is determined.

[0201] The optional implementation of step S302 can be found in the optional implementation of step S206 in FIG2, and other related parts in the embodiments involved in FIG2, which will not be repeated here.

[0202] In some embodiments, the terminal may remain in the first cell after being woken up.

[0203] In some embodiments, the second cell may include one of the following: the first cell, or a cell determined by cell selection.

[0204] In the following, specific embodiments of the present disclosure will be described by way of example.

[0205] In some embodiments, the communication method of this disclosure is for cell reselection based on the terminal using LP-WUR and low-power signals, and for cases 1 and 2 where the primary transceiver is determined to be camped in a specific cell. It is understood that if the terminal uses the primary transceiver for cell reselection, or in case 3, since the terminal has already selected the optimal cell for the primary transceiver through a cell search process after wake-up, the communication method of this disclosure may not be executed.

[0206] In some embodiments, the terminal needs to record the cell identifier of the cell (hereinafter referred to as "first cell") in which it transitions from the state of the main transceiver working (i.e., the second state) to the state of the main transceiver sleeping / LP-WUR activated (i.e., the first state).

[0207] In some embodiments, when a terminal is woken up (either by a wake-up signal sent by a base station or by the terminal actively waking up due to uplink information to be sent), if the terminal detects that the cell it is camped in after waking up (hereinafter referred to as "second cell") has the same cell identifier as the first cell, that is, the terminal has not moved out of the cell where the primary transceiver was originally working, this cell is the cell selected by the primary transceiver that is suitable for the primary transceiver to work in, and the terminal's behavior can be to directly initiate random access on the first cell.

[0208] In some embodiments, when the terminal is woken up, if the terminal detects that the cell identifier of the second cell is different from that of the first cell, that is, the terminal has moved out of the cell where the primary transceiver was originally operating, this cell may not be a suitable cell for the primary transceiver to operate in. Therefore, after the primary transceiver is woken up, it may need to find a suitable cell to initiate random access. The terminal's behavior may be:

[0209] a) Method 1:

[0210] i. If the terminal master transceiver measures that the reception quality (e.g., RSRP, RSRQ, SINR) of the signal (e.g., SSB, TRS for idle state) of the second cell meets the set threshold, and the second cell allows the terminal to camp (e.g., the system information configuration of the second cell allows the terminal to camp), then the terminal will initiate random access on the second cell.

[0211] ii. Otherwise, the terminal will select a suitable cell to camp on based on the stored frequency information or the configuration of the system information of the second cell or by blindly searching for the synchronization signal on the supported frequency, and initiate random access on that cell.

[0212] b) Method Two:

[0213] i. If the terminal's main transceiver measures that the signal reception quality of the second cell meets the set threshold, and there are no higher priority frequency points (for example, the second cell itself is a high priority frequency point, or there are no higher priority frequency points in the neighboring cells of the second cell), and the second cell allows the terminal to camp, then the terminal will initiate random access on the second cell.

[0214] ii. Otherwise (i.e., there is a higher priority frequency point, or the terminal measures that the signal reception quality of the second cell does not meet the set threshold), the terminal will select a suitable camping cell according to the stored frequency point information or the configuration of the system information of the second cell or the synchronization signal on the supported frequency point by blind search, and initiate random access on the camping cell according to the cell selection algorithm.

[0215] iii. The threshold that the signal reception quality of the second cell in Method 1 and / or Method 2 above needs to meet is defined by the protocol or configured by the second cell through broadcast information, or it can be a threshold value set by the terminal itself.

[0216] In some embodiments, the basic idea of ​​this solution is to allow the master transceiver to find a relatively good / optimal cell for initiating random access. However, the cell search process increases latency. If the service type is latency-sensitive, method one should be chosen whenever possible. If the service is not latency-sensitive, method two can be considered.

[0217] In some embodiments, the cell selection process is described as follows: The terminal can measure the received signal quality of each cell based on its stored frequency information, the neighboring cell measurement information configured in the system information of the second cell, or by blindly searching the frequency information supported by the terminal. If the measurement result of a certain cell meets a set threshold, and the cell allows the terminal to camp, the terminal can choose to camp on that cell.

[0218] In the embodiments disclosed herein, some or all of the steps and their optional implementations may be arbitrarily combined with some or all of the steps in other embodiments, or may be arbitrarily combined with the optional implementations in other embodiments.

[0219] This disclosure also provides a communication device for implementing any of the above methods. For example, this disclosure also provides another communication device, including units or modules for implementing the steps performed by the terminal in any of the above methods. For example, this disclosure also provides another communication device, including units or modules for implementing the steps performed by the network device in any of the above methods.

[0220] It is understood that the division of units or modules in the above device is only a logical functional division. In actual implementation, they can be fully or partially integrated into a single physical entity, or they can be physically separated. Furthermore, the units or modules in the device can be implemented by a processor calling software: for example, the device includes a processor connected to a memory containing instructions. The processor calls the instructions stored in the memory to implement any of the above methods or to implement the functions of the units or modules in the above device. The processor can be, for example, a general-purpose processor, such as a Central Processing Unit (CPU) or a microprocessor, and the memory can be internal or external to the device. Alternatively, the units or modules in the device can be implemented in the form of hardware circuits. The functionality of some or all of the units or modules can be achieved through the design of these hardware circuits, which can be understood as one or more processors. For example, in one implementation, the hardware circuit is an application-specific integrated circuit (ASIC). The functionality of some or all of the units or modules is achieved through the design of the logical relationships between the components within the circuit. In another implementation, the hardware circuit can be implemented using a programmable logic device (PLD). Taking a field-programmable gate array (FPGA) as an example, it can include a large number of logic gates. The connection relationships between the logic gates are configured through configuration files, thereby achieving the functionality of some or all of the units or modules. All units or modules of the above device can be implemented entirely through processor-called software, entirely through hardware circuits, or partially through processor-called software with the remaining parts implemented through hardware circuits.

[0221] In this embodiment, the processor is a circuit with signal processing capabilities. In one implementation, the processor can be a circuit with instruction read and execute capabilities, such as a central processing unit, microprocessor, graphics processing unit (GPU) (which can be understood as a type of microprocessor), or digital signal processor (DSP). In another implementation, the processor can implement certain functions through the logical relationships of hardware circuits. The logical relationships of the aforementioned hardware circuits are fixed or reconfigurable. For example, the processor is a hardware circuit implemented by an application-specific integrated circuit (ASIC) or a programmable logic device, such as an FPGA. In a reconfigurable hardware circuit, the process of the processor loading a configuration document and configuring the hardware circuit can be understood as the process of the processor loading instructions to implement the functions of some or all of the above units or modules. Furthermore, it can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), tensor processing unit (TPU), deep learning processing unit (DPU), etc.

[0222] Figure 4 is an exemplary structural diagram of a communication device provided according to an embodiment of the present disclosure. As shown in Figure 4, the communication device 400 may include at least one of the following: a transceiver module 401 and a processing module 402.

[0223] In some embodiments, the communication device 400 shown in FIG4 can also be implemented as a communication apparatus.

[0224] In some embodiments, the communication device 400 may be a terminal. In some embodiments, the processing module 402 may be configured to: monitor LP-WUS in a power-saving state; and, when the terminal is woken up, determine a second cell for the terminal to initiate random access, wherein the terminal camps in a first cell after being woken up, and the second cell includes one of the following: the first cell, or a cell determined by cell selection. In some embodiments, the transceiver module 401 may be configured to perform at least one of the communication steps (e.g., steps S202, S203, S205, S207, but not limited thereto) performed by the terminal 101 in any of the above methods, which will not be elaborated here. In some embodiments, the processing module 402 may be configured to perform at least one of the other steps (e.g., steps S201, S204, S206, but not limited thereto) performed by the terminal 101 in any of the above methods, excluding the communication steps such as sending and / or receiving, which will not be elaborated here.

[0225] In some embodiments, the transceiver module may include a transmitting module and / or a receiving module. The transmitting and receiving modules may be separate or integrated. Optionally, the transceiver module may be interchangeable with a transceiver.

[0226] Figure 5A is a schematic diagram of the structure of a communication device provided according to an embodiment of the present disclosure. The communication device 5100 can be a network device (e.g., access network device, core network device, etc.), a terminal (e.g., user equipment, etc.), a chip, chip system, or processor that supports the network device in implementing any of the above methods, or a chip, chip system, or processor that supports the terminal in implementing any of the above methods. The communication device 5100 can be used to implement the methods described in the above method embodiments; for details, please refer to the descriptions in the above method embodiments.

[0227] As shown in Figure 5A, the communication device 5100 includes one or more processors 5101. The processor 5101 can be a general-purpose processor or a dedicated processor, such as a baseband processor or a central processing unit (CPU). The baseband processor can be used to process communication protocols and communication data, while the CPU can be used to control communication devices (e.g., base stations, baseband chips, terminal devices, terminal device chips, DUs or CUs, etc.), execute programs, and process program data. Optionally, the communication device 5100 can be used to execute any of the above methods. Optionally, one or more processors 5101 can be used to invoke instructions to cause the communication device 5100 to execute any of the above methods.

[0228] In some embodiments, the communication device 5100 further includes one or more transceivers 5102. When the communication device 5100 includes one or more transceivers 5102, the transceiver 5102 performs at least one of the communication steps such as sending and / or receiving in the above method (e.g., steps S202, S203, S205, S207, but not limited thereto). The processor 5101 performs at least one of other steps (e.g., steps S201, S204, S206, but not limited thereto). In optional embodiments, the transceiver 5102 may include a receiver and / or a transmitter, which may be separate or integrated together. Optionally, the terms transceiver, transceiver unit, transceiver, transceiver circuit, interface circuit, interface, etc., can be used interchangeably; the terms transmitter, transmitting unit, transmitter, transmitting circuit, etc., can be used interchangeably; and the terms receiver, receiving unit, receiver, receiving circuit, etc., can be used interchangeably.

[0229] In some embodiments, the communication device 5100 further includes one or more memories 5103 for storing data. Optionally, all or part of the memories 5103 may be located outside the communication device 5100. In optional embodiments, the communication device 5100 may include one or more interface circuits 5104. Optionally, the interface circuits 5104 are connected to the memories 5103 and can be used to receive data from the memories 5103 or other devices, and to send data to the memories 5103 or other devices. For example, the interface circuits 5104 can read data stored in the memories 5103 and send the data to the processor 5101.

[0230] The communication device 5100 described in the above embodiments may be a network device or a terminal, but the scope of the communication device 5100 described in this disclosure is not limited thereto, and the structure of the communication device 5100 may not be limited by FIG. 5A. The communication device may be a standalone device or a part of a larger device. For example, the communication device may be: (1) a standalone integrated circuit IC, or chip, or chip system or subsystem; (2) a collection of one or more ICs, optionally, the IC collection may also include storage components for storing data and programs; (3) an ASIC, such as a modem; (4) a module that can be embedded in other devices; (5) a receiver, terminal device, smart terminal device, cellular phone, wireless device, handheld device, mobile unit, vehicle device, network device, cloud device, artificial intelligence device, etc.; (6) others, etc.

[0231] Figure 5B is a schematic diagram of the structure of a chip provided according to an embodiment of the present disclosure. For cases where the communication device 5100 can be a chip or a chip system, please refer to the schematic diagram of the chip 5200 shown in Figure 5B, but it is not limited thereto.

[0232] Chip 5200 includes one or more processors 5201. Chip 5200 is used to perform any of the methods described above.

[0233] In some embodiments, chip 5200 further includes one or more interface circuits 5202. Optionally, terms such as interface circuit, interface, and transceiver pin can be used interchangeably. In some embodiments, chip 5200 further includes one or more memories 5203 for storing data. Optionally, all or part of the memories 5203 may be located outside of chip 5200. Optionally, interface circuit 5202 is connected to memory 5203, and interface circuit 5202 can be used to receive data from memory 5203 or other devices, and interface circuit 5202 can be used to send data to memory 5203 or other devices. For example, interface circuit 5202 can read data stored in memory 5203 and send the data to processor 5201.

[0234] In some embodiments, the interface circuit 5202 performs at least one of the communication steps such as sending and / or receiving in the above-described method (e.g., steps S202, S203, S205, S207, but not limited thereto). The interface circuit 5202 performing the communication steps such as sending and / or receiving in the above-described method refers, for example, to the interface circuit 5202 performing data interaction between the processor 5201, the chip 5200, the memory 5203, or the transceiver device. In some embodiments, the processor 5201 performs at least one of other steps (e.g., steps S201, S204, S206, but not limited thereto).

[0235] The modules and / or devices described in the various embodiments, such as virtual devices, physical devices, and chips, can be combined or separated arbitrarily as needed. Optionally, some or all steps can also be performed collaboratively by multiple modules and / or devices, which is not limited here.

[0236] This disclosure also proposes a storage medium storing instructions that, when executed on a communication device 5100, cause the communication device 5100 to perform any of the methods described above. Optionally, the storage medium is an electronic storage medium. Optionally, the storage medium is a computer-readable storage medium, but not limited thereto; it may also be a storage medium readable by other devices. Optionally, the storage medium may be a non-transitory storage medium, but not limited thereto; it may also be a temporary storage medium.

[0237] This disclosure also proposes a program product that, when executed by a communication device 5100, causes the communication device 5100 to perform any of the above methods. Optionally, the program product is a computer program product.

[0238] This disclosure also proposes a computer program that, when run on a computer, causes the computer to perform any of the above methods.

[0239] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0240] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A communication method, executed by a terminal, wherein, The method includes: In power-saving mode, listen for the low-power wake-up signal LP-WUS; When the terminal is woken up, a second cell for the terminal to initiate random access is determined, wherein the terminal camps in the first cell after being woken up, and the second cell includes one of the following: the first cell, or a cell determined by cell selection.

2. The method according to claim 1, wherein, The determination of the second cell for the terminal to initiate random access includes: The first cell is designated as the second cell, wherein the cell identifier of the first cell is the same as the cell identifier of the third cell, and the third cell is the cell where the terminal was located before entering the power-saving state.

3. The method according to claim 1, wherein, The determination of the second cell for the terminal to initiate random access includes: The first cell is identified as the second cell, wherein the cell identifier of the first cell is different from that of the third cell, the third cell is the cell where the terminal was located before entering the power saving state, and the first cell satisfies the first condition.

4. The method according to claim 1, wherein, The determination of the second cell for the terminal to initiate random access includes: Based on the first information, the second cell is determined by the cell selection, wherein the first information is used to determine at least one frequency point involved in the cell selection, the cell identifier of the first cell is different from the cell identifier of the third cell, the third cell is the cell where the terminal was before entering the power saving state, and the first cell does not meet the first condition.

5. The method according to claim 4, wherein, The first information includes at least one of the following: The terminal stores frequency point information; System information of the first cell; Frequency information supported by the terminal.

6. The method according to any one of claims 3 to 5, wherein, The first condition includes at least one of the following: The signal quality of the first signal received by the terminal in the first cell meets the first threshold. The frequency of the first cell has high priority; The first cell allows the terminal to reside.

7. The method according to claim 6, wherein, The first signal includes at least one of the following: Synchronization signal and physical broadcast channel block (SSB); Track the reference signal TRS.

8. The method according to any one of claims 1 to 7, wherein, The cell identifier of the third cell in which the terminal was located before entering the power-saving state is stored in the terminal.

9. The method according to any one of claims 1 to 8, wherein, The terminal includes a main transceiver and a low-power wake-up transceiver (LP-WUR).

10. A communication device, wherein, The communication device is configured to implement the communication method as described in any one of claims 1 to 9.

11. A storage medium storing instructions, wherein, When the instruction is executed on the communication device, the communication device performs the communication method as described in any one of claims 1 to 9.

12. A computer program product comprising instructions, wherein, When the instructions are executed by the processor, they implement the communication method as described in any one of claims 1 to 9.

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