Frequency domain residence method, device and equipment

Abstract

Disclosed are a frequency domain residence method, apparatus and device, belonging to the field of communications, the frequency domain residence method of the embodiment of the present application comprising: a terminal resides in a first frequency domain unit in a first cell after cell selection or cell reselection; wherein the first cell comprises at least two frequency domain units. In the embodiment, a terminal resides in a first frequency domain unit in a first cell after cell selection or cell reselection, and the first cell comprises at least two frequency domain units, so that different terminals can reside in different frequency domain units of the first cell, loads on the different frequency domain units can be balanced, and in addition, the user experience is improved. The first cell may be a cell integrating some scattered frequency domain units, avoiding cell selection or cell reselection for each scattered frequency domain unit.

Description

Technical Field

[0001] This application relates to the field of communications, and more particularly, to a method, apparatus, and device for frequency-domain residence. Background Art

[0002] In a New Radio (NR) system, a cell suitable for residence can be selected for a terminal in an idle state or a deactivated state through a cell selection or cell reselection process. The carrier of each cell is a continuous frequency-domain resource. In the spectrum below 3 GHz (Sub-3 GHz), there are a large number of discontinuous fragmented frequency bands. At present, each fragmented frequency band is regarded as a cell, which undoubtedly increases the complexity and power consumption of cell selection or cell reselection. How to reduce the complexity and power consumption of cell selection or cell reselection for fragmented frequency bands is a problem that needs to be solved. Summary of the Invention

[0003] Embodiments of this application provide a method, apparatus, and device for frequency-domain residence, which can integrate some fragmented frequency-domain bands into one cell, and the terminal resides in a specific frequency-domain unit within the cell after cell selection or cell reselection, capable of solving the problems of high complexity and high power consumption in cell selection or cell reselection for fragmented frequency bands.

[0004] In a first aspect, a method for frequency-domain residence is provided, including:

[0005] The terminal resides in a first frequency-domain unit within a first cell after cell selection or cell reselection;

[0006] Wherein, the first cell includes at least two frequency-domain units.

[0007] In a second aspect, a method for frequency-domain residence is provided, including:

[0008] The network-side device sends first information to the terminal;

[0009] Wherein, the first information is used to instruct the terminal to reside in a second frequency-domain unit within the first cell, the terminal resides in the first frequency-domain unit within the first cell after cell selection or cell reselection, and the first cell includes at least two frequency-domain units.

[0010] In a third aspect, a device for frequency-domain residence is provided, including:

[0011] A processing unit, configured to reside in a first frequency-domain unit within a first cell after cell selection or cell reselection;

[0012] Wherein, the first cell includes at least two frequency-domain units.

[0013] In a fourth aspect, a device for frequency-domain residence is provided, including:

[0014] A transceiver unit, configured to send a first piece of information to a terminal;

[0015] Wherein, the first piece of information is used to instruct the terminal to camp on a second frequency domain unit within a first cell, and the terminal camps on a first frequency domain unit within the first cell after cell selection or cell reselection, and the first cell includes at least two frequency domain units.

[0016] In a fifth aspect, a terminal is provided, where the terminal includes a transceiver, a processor, and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

[0017] In a sixth aspect, a terminal is provided, including a processor and a communication interface. Wherein, the processor is used to camp on a first frequency domain unit within a first cell after cell selection or cell reselection; wherein, the first cell includes at least two frequency domain units.

[0018] In a seventh aspect, a network-side device is provided, where the network-side device includes a transceiver, a processor, and a memory. The memory stores a program or instruction that can run on the processor. When the program or instruction is executed by the processor, the steps of the method described in the second aspect are implemented.

[0019] In an eighth aspect, a network-side device is provided, including a processor and a communication interface. Wherein, the communication interface is used to send a first piece of information to a terminal; wherein, the first piece of information is used to instruct the terminal to camp on a second frequency domain unit within a first cell, and the terminal camps on a first frequency domain unit within the first cell after cell selection or cell reselection, and the first cell includes at least two frequency domain units.

[0020] In a ninth aspect, a readable storage medium is provided, where a program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0021] In a tenth aspect, a wireless communication system is provided, including: a terminal and a network-side device. The terminal can be used to execute the steps of the method described in the first aspect, and the network-side device can be used to execute the steps of the method described in the second aspect.

[0022] In an eleventh aspect, a chip is provided, where the chip includes a processor and a communication interface. The communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the second aspect.

[0023] In a twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium and is executed by at least one processor to implement the steps of the method for frequency domain residence as described in the first aspect or the second aspect.

[0024] In an embodiment of the present application, after cell selection or cell reselection, the terminal resides in a first frequency domain unit within a first cell, where the first cell is a cell that integrates some scattered frequency domain units, thereby avoiding cell selection or cell reselection for each scattered frequency domain unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] To more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic diagram of a communication system architecture provided by an embodiment of the present application.

[0027] Figure 2 It is a schematic diagram of a BWP provided by the present application.

[0028] Figure 3 It is a schematic flowchart of a method for frequency domain residence provided according to an embodiment of the present application.

[0029] Figure 4 It is a schematic flowchart of another method for frequency domain residence provided according to an embodiment of the present application.

[0030] Figure 5 It is a schematic block diagram of a device for frequency domain residence provided according to an embodiment of the present application.

[0031] Figure 6 It is a schematic block diagram of another device for frequency domain residence provided according to an embodiment of the present application.

[0032] Figure 7 It is a schematic block diagram of a communication device provided according to an embodiment of the present application.

[0033] Figure 8 It is a schematic diagram of the hardware structure of a terminal provided according to an embodiment of the present application.

[0034] Figure 9 It is a schematic block diagram of a network side device provided according to an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0036] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0037] The term "indication" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the receiver of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the receiver determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0038] It should be noted that the technology described in the embodiments of this application is not limited to the Ambient Internet of Things (IoT) system, but can also be used in other wireless communication systems, such as Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), Wireless Local Area Networks (WLAN), Wireless Fidelity (WiFi), Bluetooth systems, or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used in the systems and radio technologies mentioned above, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes and uses the NR term in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6G) communication system. th Generation, 6G) communication system.

[0039] Figure 1The block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application.

[0040] The network-side device 12 may include an access network device or a core network device.

[0041] Among them, the access network device can also be referred to as a Radio Access Network (RAN) device, a radio access network function, or a radio access network unit. The access network device can include a base station, a Wireless Local Area Network (WLAN) Access Point (AP), or a Wireless Fidelity (WiFi) node, etc. Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the next generation Node B (gNB), New Radio Node B (NR Node B), access point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home Node B (HNB), home evolved Node B, Transmission Reception Point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.

[0042] Among them, the core network devices may include but are not limited to at least one of the following: core network nodes, core network functions, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), Network Data Analytics Function (NWDAF), Location Management Function (LMF), etc. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited.

[0043] For better understanding of the embodiments of this application, the related technologies of this application are described.

[0044] Mobile communication systems need to adapt to more diverse scenarios and service requirements. For example, the main scenarios of 5G include enhanced mobile broadband (eMBB), ultra-reliable and low-latency communication (URLLC), and massive machine type of communication (mMTC). These scenarios pose requirements such as high reliability, low latency, large bandwidth, and wide coverage on the system. For different application scenarios, the transmission bandwidth required by the terminal is different. In NR, the base station can schedule the terminal to transmit on different bandwidth parts according to the demand.

[0045] In NR, the network side configures one or more bandwidth parts (BWPs) for the UE to perform data transmission. A BWP is a continuous segment of resources in the frequency domain. The UE realizes dynamic bandwidth changes by activating different BWPs. As Figure 2 shown, at the first moment, the traffic volume of the UE is large, and the UE activates a large bandwidth (BWP1); at the second moment, the traffic volume of the UE is small, and the UE activates a small bandwidth (BWP2) to meet the basic communication requirements; at the third moment, the network side detects that there is a large-scale frequency selective fading within the bandwidth where BWP1 is located, or the resources within the frequency range where BWP2 is located are relatively scarce, so it instructs the UE to activate a new bandwidth (BWP3). Each BWP can correspond to different configuration parameters, including subcarrier spacing, the position and bandwidth of the BWP, cyclic prefix (CP), etc.

[0046] The Sub-3GHz spectrum (i.e., the radio band with a frequency below 3 GHz) has advantages such as small penetration loss and plays an important role in cellular network deployment due to its good coverage. On the other hand, compared with the C-band, the Sub-3GHz spectrum is fragmented and allocated to International Mobile Telecommunications (IMT), and due to competition among mobile operators, the bandwidth of each spectrum block is relatively narrow. On the other hand, almost all operators globally own multiple Sub-3GHz frequency bands (such as the 700MHz, 800MHz, 900MHz, 1.4GHz, 1.8GHz, 2.1GHz, 2.3GHz, or 2.6GHz frequency bands).

[0047] To facilitate a better understanding of the embodiments of the present application, the problems solved by the present application are described.

[0048] At present, the carrier of each cell is a continuous frequency-domain resource. Through the cell selection or cell reselection process, a suitable cell for a terminal in the idle or inactive state is selected. For a large number of scattered spectrums in the Sub-3GHz spectrum, if each frequency band is regarded as a cell, when an idle / inactive UE performs cell selection or reselection, according to the existing rules, the UE may need to measure the cells corresponding to these spectrums, increasing power consumption. In addition, since the existing rules only perform cell selection and cell reselection based on measurement results and priorities, and neither cell selection nor cell reselection based on measurement results and priorities involves the cell load problem, it may cause a large number of UEs to camp on a cell with a very narrow bandwidth, causing the cell to be overloaded after the UEs access the cell.

[0049] Based on the above problems, the present application proposes a frequency-domain camping scheme, which can integrate some scattered frequency-domain units into one cell, and can solve the problems of high complexity and high power consumption in cell selection or reselection of scattered frequency bands.

[0050] To facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific embodiments. The above related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as optional solutions, and they all fall within the protection scope of the embodiments of the present application. The embodiments of the present application include at least some of the following contents.

[0051] Figure 3 It is a schematic flowchart of a frequency-domain camping method 200 according to an embodiment of the present application. As Figure 3 shown, the frequency-domain camping method 200 may include at least some of the following contents:

[0052] S210, the terminal camps on a first frequency-domain unit in a first cell after cell selection or cell reselection; wherein, the first cell includes at least two frequency-domain units.

[0053] It should be understood that Figure 3 shows the steps or operations of the frequency-domain camping method 200, but these steps or operations are only examples, and the embodiments of the present application may also perform other operations or Figure 3 variations of each operation in.

[0054] In the embodiments of the present application, the terminal camps on a first frequency-domain unit in a first cell after cell selection or cell reselection, wherein the first cell includes at least two frequency-domain units, so that different terminals can camp on different frequency-domain units of the first cell, and the load on different frequency-domain units can also be balanced. In addition, the first cell can be a cell that integrates some scattered frequency-domain units, avoiding cell selection or cell reselection for each scattered frequency-domain unit.

[0055] In the embodiments of the present application, each frequency domain unit in the first cell is a group of consecutive frequency domain resources. Optionally, the unit of the frequency domain unit described in the embodiments of the present application may be one of the following: bandwidth (band), carrier, subcarrier, subband, BWP.

[0056] In some embodiments, at least some of the at least two frequency domain units are discontinuous. That is, at least some of the frequency domain units in the first cell are discontinuous. In other words, in this embodiment, some scattered frequency bands can be integrated into one cell, and the discontinuous spectra can be effectively aggregated to form a "single" carrier equivalent to a large bandwidth, avoiding cell selection or cell reselection for each scattered frequency band, thereby benefiting the operator.

[0057] In some embodiments, the at least two frequency domain units may also be continuous, and the present embodiment does not limit this.

[0058] In some embodiments, at least some of the at least two frequency domain units have different sizes. That is, at least some of the frequency domain units in the first cell have different sizes. In this embodiment, at least some of the frequency domain units in the cell have different sizes, which reduces the size limitation of the frequency domain units in the cell. Thus, some scattered frequency bands can be more flexibly integrated into one cell.

[0059] For example, the first cell consists of four frequency domain units, and the sizes of these four frequency domain units are 3 MHz, 10 MHz, 5 MHz, and 5 MHz respectively.

[0060] In some embodiments, the at least two frequency domain units may also be the same, and the present embodiment does not limit this.

[0061] In the embodiments of the present application, the first frequency domain unit may also be referred to as the initial frequency domain unit or the default frequency domain unit or the primary frequency domain unit. For example, the first frequency domain unit may be notified by system broadcast.

[0062] In some embodiments, different terminals in the first cell correspond to different first frequency domain units.

[0063] In some embodiments, the first frequency domain unit is associated with the identifier of the terminal. In other words, the terminal can determine the first frequency domain unit based on its identifier. For example, a UE ID can be mapped to a frequency domain unit ID through a hash function.

[0064] Optionally, the association relationship between the frequency domain unit and the identifier of the terminal is specified by the protocol, or the association relationship between the frequency domain unit and the identifier of the terminal is configured by the network side.

[0065] In some embodiments, the first frequency domain unit is associated with the group identifier of the terminal group to which the terminal belongs. In other words, the terminal can determine the first frequency domain unit based on the group identifier of the terminal group to which the terminal belongs. For example, a UE group ID can be mapped to a frequency domain unit ID through a hash function.

[0066] Optionally, the association relationship between the frequency domain unit and the identifier of the terminal group is specified by the protocol, or the association relationship between the frequency domain unit and the identifier of the terminal group is configured by the network side.

[0067] In some embodiments, the first frequency domain unit is the frequency domain unit that detects a Synchronization Signal Block (SSB). Optionally, the first frequency domain unit can also be the frequency domain unit that detects other signals with synchronization functions. Correspondingly, SS-RSRP or SS-RSRQ is the RSRP or RSRQ of the synchronization function signal measured.

[0068] In some embodiments, all terminals in the first cell correspond to the same first frequency domain unit;

[0069] wherein, the first frequency domain unit is configured through cell-specific signaling or broadcast signaling.

[0070] In some embodiments, after S210 above, the method 200 for frequency domain residence further includes:

[0071] The terminal switches from the first frequency domain unit to the second frequency domain unit for residence.

[0072] That is, the terminal switches the frequency domain unit in which it resides in the first cell from the first frequency domain unit to the second frequency domain unit.

[0073] In this embodiment, the terminal can switch the frequency domain unit in which it resides in the first cell, so as to balance the load on different frequency domain units and flexibly select the frequency domain unit for residence, thereby improving the communication performance in the first cell.

[0074] In some embodiments, the terminal receives first information from the network side device; wherein, the first information is used to instruct the terminal to reside in the second frequency domain unit in the first cell. In this embodiment, the terminal can switch the frequency domain unit for residence based on the indication of the network side.

[0075] Exemplarily, the terminal receives the first information from the network-side device, and the terminal switches from the first frequency-domain unit to the second frequency-domain unit for residence according to the first information.

[0076] In some embodiments, the terminal determines to switch from the first frequency-domain unit to the second frequency-domain unit for residence according to at least one of the following:

[0077] The priority order of the frequency-domain units in the first cell, the load of the frequency-domain units in the first cell.

[0078] In this embodiment, the terminal can determine the second frequency-domain unit based on the priority order of the frequency-domain units in the first cell or the load of the frequency-domain units in the first cell, so as to balance the load or priority situation on different frequency-domain units, reduce unnecessary measurements and detections of the terminal, and reduce the power consumption of the terminal, thereby improving the communication performance in the first cell.

[0079] In some embodiments, the network-side device can determine the second frequency-domain unit based on at least one of the following:

[0080] The priority order of the frequency-domain units in the first cell, the load of the frequency-domain units in the first cell.

[0081] In this embodiment, the network-side device can determine the second frequency-domain unit based on the priority order of the frequency-domain units in the first cell or the load of the frequency-domain units in the first cell, and instruct the terminal to switch the frequency-domain unit for residence in the first cell from the first frequency-domain unit to the second frequency-domain unit, so as to balance the load or priority situation on different frequency-domain units, reduce unnecessary measurements and detections of the terminal, and reduce the power consumption of the terminal, thereby improving the communication performance in the first cell.

[0082] In some embodiments, when the load of the first frequency-domain unit is greater than or equal to the first threshold, or when the load of the first frequency-domain unit is greater than or equal to the first threshold within consecutive M time units, the terminal determines to switch from the first frequency-domain unit to the second frequency-domain unit for residence.

[0083] In some embodiments, when the load of the first frequency-domain unit is greater than or equal to the first threshold, or when the load of the first frequency-domain unit is greater than or equal to the first threshold within consecutive M time units, the terminal determines to switch from the first frequency-domain unit to the second frequency-domain unit for residence, where the second frequency-domain unit satisfies at least one of the following:

[0084] The second frequency domain unit is a frequency domain unit with the smallest load, highest priority, or randomly selected one among the frequency domain units in the first cell with a load less than or equal to a second threshold, or the second frequency domain unit is a frequency domain unit with the smallest load, highest priority, or randomly selected one among the frequency domain units in the first cell with a load less than or equal to the second threshold within N consecutive time units;

[0085] If the loads of the frequency domain units other than the first frequency domain unit in the first cell are all greater than the second threshold, or if there is no frequency domain unit in the first cell with a load less than or equal to the second threshold within N consecutive time units, the second frequency domain unit is the frequency domain unit with the smallest load or highest priority among all the frequency domain units other than the first frequency domain unit in the first cell;

[0086] If the loads of the frequency domain units other than the first frequency domain unit in the first cell are all greater than the second threshold, lower the second threshold until there is a frequency domain unit in the first cell with a load less than or equal to the second threshold. The second frequency domain unit is a frequency domain unit with the smallest load, highest priority, or randomly selected one among the frequency domain units in the first cell with a load less than or equal to the second threshold;

[0087] If there is no frequency domain unit in the first cell with a load less than or equal to the second threshold within N consecutive time units, reduce the value of N or lower the second threshold until there is a frequency domain unit in the first cell with a load less than or equal to the second threshold within N consecutive time units. The second frequency domain unit is a frequency domain unit with the smallest load, highest priority, or randomly selected one among the frequency domain units in the first cell with a load less than or equal to the second threshold within N consecutive time units;

[0088] Wherein, both M and N are greater than zero.

[0089] In some embodiments, when the load of the first frequency domain unit is greater than or equal to a first threshold, or when the load of the first frequency domain unit is greater than or equal to the first threshold within M consecutive time units, the second frequency domain unit is a frequency domain unit with the smallest load, highest priority, or randomly selected one among the frequency domain units in the first cell with a load less than or equal to the second threshold, or the second frequency domain unit is a frequency domain unit with the smallest load, highest priority, or randomly selected one among the frequency domain units in the first cell with a load less than or equal to the second threshold within N consecutive time units.

[0090] Specifically, when the load of the first frequency domain unit is greater than or equal to the first threshold, or when the load of the first frequency domain unit is greater than or equal to the first threshold within consecutive M time units, the network side device may determine, as the second frequency domain unit, a frequency domain unit with the smallest load, the highest priority, or randomly selected from among the frequency domain units in the first cell whose load is less than or equal to the second threshold. Alternatively, the network side device may determine, as the second frequency domain unit, a frequency domain unit with the smallest load, the highest priority, or randomly selected from among the frequency domain units in the first cell whose load is less than or equal to the second threshold within consecutive N time units.

[0091] In some embodiments, when the load of the first frequency domain unit is greater than or equal to the first threshold, or when the load of the first frequency domain unit is greater than or equal to the first threshold within consecutive M time units, if the loads of the frequency domain units other than the first frequency domain unit in the first cell are all greater than the second threshold, or if there is no frequency domain unit in the first cell whose load is less than or equal to the second threshold within consecutive N time units, the second frequency domain unit is the frequency domain unit with the smallest load or the highest priority among all the frequency domain units other than the first frequency domain unit in the first cell.

[0092] Specifically, when the load of the first frequency domain unit is greater than or equal to the first threshold, or when the load of the first frequency domain unit is greater than or equal to the first threshold within consecutive M time units, if the loads of the frequency domain units other than the first frequency domain unit in the first cell are all greater than the second threshold, or if there is no frequency domain unit in the first cell whose load is less than or equal to the second threshold within consecutive N time units, the network side device may determine, as the second frequency domain unit, the frequency domain unit with the smallest load or the highest priority among all the frequency domain units other than the first frequency domain unit in the first cell.

[0093] In some embodiments, when the load of the first frequency domain unit is greater than or equal to the first threshold, or when the load of the first frequency domain unit is greater than or equal to the first threshold within consecutive M time units, if the loads of the frequency domain units other than the first frequency domain unit in the first cell are all greater than the second threshold, the second threshold is decreased until there is a frequency domain unit in the first cell whose load is less than or equal to the second threshold, and the second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from among the frequency domain units in the first cell whose load is less than or equal to the second threshold. Optionally, the adjustment step size of the second threshold may be specified by the protocol or configured by the network side.

[0094] Specifically, when the load of the first frequency domain unit is greater than or equal to the first threshold, or when the load of the first frequency domain unit is greater than or equal to the first threshold within consecutive M time units, if the loads of the frequency domain units other than the first frequency domain unit in the first cell are all greater than the second threshold, the second threshold is decreased until there is a frequency domain unit in the first cell whose load is less than or equal to the second threshold. The network device may determine, as the second frequency domain unit, a frequency domain unit with the smallest load, the highest priority, or randomly selected from among the frequency domain units in the first cell whose loads are less than or equal to the second threshold.

[0095] In some embodiments, when the load of the first frequency domain unit is greater than or equal to the first threshold, or when the load of the first frequency domain unit is greater than or equal to the first threshold within consecutive M time units, if there is no frequency domain unit in the first cell whose load is less than or equal to the second threshold within consecutive N time units, the value of N is decreased or the second threshold is decreased until there is a frequency domain unit in the first cell whose load is less than or equal to the second threshold within consecutive N time units. The second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from among the frequency domain units in the first cell whose loads are less than or equal to the second threshold within consecutive N time units. Optionally, the adjustment step size of the second threshold may be specified by a protocol, or the adjustment step size of the second threshold may be configured by the network side. Optionally, the adjustment step size of N may be specified by a protocol, or the adjustment step size of N may be configured by the network side.

[0096] Specifically, when the load of the first frequency domain unit is greater than or equal to the first threshold, or when the load of the first frequency domain unit is greater than or equal to the first threshold within consecutive M time units, if there is no frequency domain unit in the first cell whose load is less than or equal to the second threshold within consecutive N time units, the value of N is decreased or the second threshold is decreased until there is a frequency domain unit in the first cell whose load is less than or equal to the second threshold within consecutive N time units. The network device may determine, as the second frequency domain unit, a frequency domain unit with the smallest load, the highest priority, or randomly selected from among the frequency domain units in the first cell whose loads are less than or equal to the second threshold within consecutive N time units.

[0097] In some embodiments, both M and N are greater than zero. Optionally, the value of M is specified by a protocol, or the value of M is configured by the network side. Optionally, the value of N is specified by a protocol, or the value of N is configured by the network side.

[0098] In some embodiments, the first threshold is greater than or equal to the second threshold. Optionally, the first threshold is specified by a protocol, or the first threshold is configured by the network side. Optionally, the second threshold is specified by a protocol, or the second threshold is configured by the network side.

[0099] In some embodiments, the time unit described in the embodiments of the present application includes, but is not limited to, one of the following: symbol, time slot, mini-slot, sub-frame, frame, microsecond, millisecond, second, minute, hour.

[0100] In some embodiments, the priority order of frequency domain units in the first cell is determined based on at least one of the following rules:

[0101] The priority of a frequency domain unit containing SSB resources is higher than that of a frequency domain unit not containing SSB resources;

[0102] In the case where at least two frequency domain units both contain SSB resources, among the at least two frequency domain units, the priority of the frequency domain unit with a larger measured Synchronization Signal Reference Signal Received Power (SS-RSRP) value is higher than that of the frequency domain unit with a smaller measured SS-RSRP value;

[0103] In the case where at least two frequency domain units both contain SSB resources, among the at least two frequency domain units, the priority of the frequency domain unit with a larger measured Synchronization Signal Reference Signal Received Quality (SS-RSRQ) value is higher than that of the frequency domain unit with a smaller measured SS-RSRQ value;

[0104] The priority of the frequency domain unit where the Cell-defining SSB is located is higher than that of the frequency domain unit where the Non-cell-defining SSB is located;

[0105] The priority of a frequency domain unit with a larger bandwidth is higher than that of a frequency domain unit with a smaller bandwidth;

[0106] The priority of a frequency domain unit with a smaller load is higher than that of a frequency domain unit with a larger load;

[0107] The priority of a frequency domain unit with a lower frequency point is higher than that of a frequency domain unit with a higher frequency point.

[0108] Exemplarily, in the case where at least two frequency domain units both contain SSB resources, among the at least two frequency domain units, the order of the measured SS-RSRP values from large to small is consistent with the order of the priorities of the frequency domain units from high to low.

[0109] Exemplarily, when at least two frequency domain units both contain SSB resources, among the at least two frequency domain units, the order of the measured SS-RSRQ values from large to small is consistent with the order of the priorities of the frequency domain units from high to low.

[0110] Exemplarily, the order of the bandwidths of the frequency domain units from large to small is consistent with the order of the priorities of the frequency domain units from high to low.

[0111] Exemplarily, the order of the loads of the frequency domain units from small to large is consistent with the order of the priorities of the frequency domain units from high to low.

[0112] Exemplarily, the order of the frequencies of the frequency domain units from low to high is consistent with the order of the priorities of the frequency domain units from high to low.

[0113] In some embodiments, the first information is carried by at least one of the following:

[0114] The Physical Downlink Shared Channel (PDSCH) for transmitting System Information Block (SIB) 1, the PDSCH for transmitting paging messages, the Downlink Control Information (DCI) associated with the paging message, the DCI associated with the paging early indication (PEI), and the system information.

[0115] Exemplarily, the network side device may indicate the frequency domain unit information where one or a group of UEs camp, and the network side device may indicate the grouping information of the UEs through the system information.

[0116] Exemplarily, the network side device indicates through the PDSCH that the UE camps to the second frequency domain unit. For example, it indicates the index or bitmap of the frequency domain unit through the PDSCH for transmitting SIB1 or paging.

[0117] Exemplarily, the network side device indicates through the dedicated signaling in the DCI that the UE camps to the second frequency domain unit. For example, a field indicating that the UE camps to the second frequency domain unit is added in the paging PDCCH, such as DCI1_0. Another example is that a field indicating that the UE camps to the second frequency domain unit is added in the PDCCH indicating the PEI, such as DCI 2_7.

[0118] Exemplarily, the network side device indicates through the system information that the UE camps to the second frequency domain unit.

[0119] Exemplarily, the frequency domain unit information indicated by the network side device may be the index or bitmap of the frequency domain unit.

[0120] In some embodiments, the terminal switches from a first frequency domain unit to a second frequency domain unit for residence according to the second information;

[0121] Wherein, the second information includes, but is not limited to, at least one of the following: the periodic switching configuration of the frequency domain units in the first cell, the event triggering the switching of the frequency domain units, and the priority order of the frequency domain units in the first cell.

[0122] In this embodiment, the terminal can switch the frequency domain unit on which it resides in the first cell from the first frequency domain unit to the second frequency domain unit based on the second information, so as to balance the load or priority situation on different frequency domain units, reduce unnecessary measurements and detections of the terminal, and reduce the power consumption of the terminal, thereby improving the communication performance in the first cell.

[0123] In some embodiments, the periodic switching configuration of the frequency domain units in the first cell is associated with at least one of the following: the number of frequency domain units included in the first cell, and the residence time of the terminal on each frequency domain unit in the first cell.

[0124] Exemplarily, the terminal periodically switches the frequency domain unit for residence. For example, the period P of the terminal switching the frequency domain unit depends on the number of frequency domain units in the first cell, P 1 , …, P N are respectively the residence times of the terminal on N frequency domain units in the cell, and P = P 1 + P 2 + … + P N .

[0125] Optionally, the period of the terminal switching the frequency domain unit can be configured by the network side through system information.

[0126] Optionally, the event triggering the switching of the frequency domain unit can be configured by the network side through system information.

[0127] In some embodiments, when the second information includes the priority order of the frequency domain units in the first cell, the terminal receives the relevant information of the frequency domain units in the first cell from the network side device; and the terminal determines the priority order of the frequency domain units in the first cell according to the relevant information of the frequency domain units in the first cell;

[0128] Wherein, the relevant information of the frequency domain units in the first cell includes, but is not limited to, at least one of the following: the position or frequency point of the frequency domain unit, the bandwidth of the frequency domain unit, the position or type of the SSB, and the load of the frequency domain unit;

[0129] Among them, the types of the SSB include cell-defined SSB and non-cell-defined SSB. In the embodiments of the present application, the cell-defined SSB refers to the cell-level SSB, such as the SSB configured with the cell as the granularity. The non-cell-defined SSB can be the SSB at the frequency domain unit level, such as the SSB configured with the frequency domain unit as the granularity.

[0130] In some embodiments, when the SS-RSRP measured on the first frequency domain unit is less than or equal to the third threshold, or when the SS-RSRQ measured on the first frequency domain unit is less than or equal to the fourth threshold, the terminal switches from the first frequency domain unit to the second frequency domain unit for residence according to the second information.

[0131] Optionally, the third threshold is agreed by the protocol, or the third threshold is configured by the network side.

[0132] Optionally, the fourth threshold is agreed by the protocol, or the fourth threshold is configured by the network side.

[0133] In some embodiments, the terminal only detects the first signal on the frequency domain unit where it resides. Among them, the first signal includes but is not limited to at least one of the following: SSB, paging message, PEI, tracking reference signal (TRS). Thereby, unnecessary measurements and detections of the terminal can be reduced, and the power consumption of the terminal can be reduced.

[0134] In some embodiments, if there is no configuration corresponding to the transmission of the first signal on the frequency domain unit where the terminal resides, no detection is performed. Among them, the first signal includes but is not limited to at least one of the following: SSB, paging message, PEI, TRS. Thereby, unnecessary measurements and detections of the terminal can be reduced, and the power consumption of the terminal can be reduced.

[0135] In some embodiments, the terminal preferentially selects to perform initial access on the resources of the frequency domain unit where it resides. Thereby, the success rate of initial access can be improved.

[0136] Exemplarily, the terminal can measure the SSB on the frequency domain unit where the SSB is sent to perform cell reselection judgment.

[0137] In some embodiments, the terminal determines whether the cell reselection condition is satisfied according to the maximum value of the SS-RSRP or SS-RSRQ measured on all frequency domain units in the first cell. If satisfied, the cell reselection process is started.

[0138] The embodiments of the present application can enable idle / inactive UEs to camp on different frequency domain units in a cell, and preferentially use the resources on the camped frequency domain units for initial access, thereby balancing the loads on different frequency domain units, reducing unnecessary measurements and detections of UEs, and saving power consumption.

[0139] In the embodiments of the present application, after cell selection or cell reselection, the terminal camps on the first frequency domain unit in the first cell, where the first cell includes at least two frequency domain units, so that different terminals can camp on different frequency domain units of the first cell, and the loads on different frequency domain units can also be balanced. In addition, the first cell can be a cell integrating some scattered frequency domain units, avoiding cell selection or cell reselection for each scattered frequency domain unit.

[0140] The technical solution of the present application is described below through Embodiment 1 to Embodiment 5.

[0141] Embodiment 1: Assume that a cell consists of four frequency domain units, and the sizes of these four frequency domain units (1-4) are 5 MHz, 10 MHz, 5 MHz, and 20 MHz respectively. The SSB is sent on frequency domain unit 2, that is, the frequency domain unit with a bandwidth of 10 MHz. After cell selection or reselection, UE1 camps on this cell, and the system information notifies that frequency domain unit 3 is the default frequency domain unit, then UE1 camps on frequency domain unit 3. If the system does not notify the default frequency domain unit, then UE1 camps on frequency domain unit 2. In addition, the system can configure the default frequency domain unit of UE2 belonging to other UE groups in the cell as frequency domain unit 4. The system configures the priorities of the frequency domain units from high to low as frequency domain unit 2, frequency domain unit 4, frequency domain unit 1, frequency domain unit 3, where frequency domain unit 1 and frequency domain unit 3 have the same priority. Or the system configures priorities of 3, 1, 3, and 2 for frequency domain units 1-4 respectively, where a smaller priority value represents a higher priority.

[0142] Embodiment 2: When the base station instructs the UE to switch the camped frequency domain unit, the base station needs to first determine a suitable frequency domain unit. Generally speaking, a suitable frequency domain unit is an activated and less-loaded frequency domain unit. If the base station decides to deactivate a certain frequency domain unit, it needs to instruct the UEs camping on this frequency domain unit to switch to other frequency domain units for camping. Similarly, if the base station finds that the load on a certain frequency domain unit is large or there are too many UEs camping on it, it can instruct some UEs to switch to a less-loaded frequency domain unit for camping.

[0143] Embodiment 3: The base station will evaluate the load of each frequency domain unit. If a certain frequency domain unit is overloaded, for example, within a continuous Tx time, the load is greater than or equal to threshold X, then the base station instructs the UE to switch to and camp on the target frequency domain unit. The target frequency domain unit needs to satisfy that within a continuous Ty time, the load is less than or equal to threshold Y. If there is more than one frequency domain unit that meets the condition, then the frequency domain unit with the smallest load, or the highest priority, or any one of the frequency domain units is selected as the target frequency domain unit. If there is no frequency domain unit with a load less than or equal to Y within a continuous Ty time, and at this time the loads of all frequency domain units are relatively large, then the frequency domain unit with the relatively smallest load, or the highest priority in the cell can be selected as the target frequency domain unit.

[0144] Among them, Tx and Ty are to avoid frequent switching of the camping frequency domain unit. For the case where there is no frequency domain unit with a load less than or equal to Y within a continuous Ty time, when selecting the target frequency domain unit, Ty can also be gradually decreased until a frequency domain unit that meets the condition of having a load less than or equal to Y within a continuous Ty time is found. For example, if the initial value of Ty is 5 ms, and if there is no suitable frequency domain unit, then Ty is set to 4 ms to check whether there is a frequency domain unit that meets the condition of having a load less than or equal to Y within a continuous Ty time. If not, Ty is continuously set to 3 ms. Suppose there is a frequency domain unit that meets the condition of having a load less than or equal to Y within a continuous Ty time at this time, then this frequency domain unit is set as the target frequency domain unit. Similarly, Ty can be kept unchanged and the value of Y can be decreased until a frequency domain unit that meets the condition of having a load less than or equal to Y within a continuous Ty time is found.

[0145] Embodiment 4: When the base station indicates the target frequency domain unit, it can indicate the index of the frequency domain unit, or a bitmap. For example, if there are four frequency domain units in the cell, then two bits are required to indicate the index, or a four-bit bitmap is used to indicate which frequency domain unit is the target frequency domain unit. In addition, the base station can also group UEs and instruct a group of UEs to switch to and camp on the target frequency domain unit. The base station can indicate the group ID and the target frequency domain unit at the same time, or bind the group to the frequency domain unit and only indicate the group ID or only indicate the target frequency domain unit. After receiving the group ID, the UEs within the group camp on the corresponding frequency domain unit. Or after receiving the indication of the target frequency domain unit, the UE decides whether to camp on the target frequency domain unit according to whether it belongs to the UE group bound to this frequency domain unit.

[0146] Embodiment 5. Assume that the periods / durations for the UE to camp on four frequency domain units are P1, P2, P3, and P4 respectively. Then the UE camps on the four frequency domain units in a polling manner with a period of P = P1 + P2 + P3 + P4. In addition, the offset of the period can be set. For example, the offset between the starting position of the period and radio frame 0 or subframe 0 is offset, or the offset between the starting position of the period and the starting position of an even / odd radio frame is offset.

[0147] As described above in conjunction with Figure 3 , the embodiments on the terminal side of the present application are described in detail. Below in conjunction with Figure 4 , the embodiments on the network side of the present application are described in detail. It should be understood that the embodiments on the network side and the embodiments on the terminal side correspond to each other, and similar descriptions can refer to the embodiments on the terminal side.

[0148] Figure 4 is a schematic flowchart of a method 300 for frequency domain camping according to an embodiment of the present application. As Figure 4 shown, the method 300 for frequency domain camping may include at least some of the following contents:

[0149] S310. The network side device sends first information to the terminal; wherein, the first information is used to instruct the terminal to camp on a second frequency domain unit in a first cell. After cell selection or cell reselection, the terminal camps on a first frequency domain unit in the first cell, and the first cell includes at least two frequency domain units.

[0150] It should be understood that Figure 4 shows the steps or operations of the method 300 for frequency domain camping, but these steps or operations are only examples. Embodiments of the present application may also perform other operations or Figure 4 variations of each operation in

[0151] In embodiments of the present application, after cell selection or cell reselection, the terminal camps on a first frequency domain unit in a first cell, where the first cell includes at least two frequency domain units. Thus, different terminals can camp on different frequency domain units in the first cell, and the load on different frequency domain units can also be balanced. In addition, the first cell may be a cell integrating some scattered frequency domain units, avoiding cell selection or cell reselection for each scattered frequency domain unit.

[0152] In some embodiments, at least some of the at least two frequency domain units are discontinuous; or,

[0153] at least some of the at least two frequency domain units have different sizes.

[0154] In some embodiments, the first frequency domain unit is associated with the identifier of the terminal; or,

[0155] the first frequency domain unit is associated with the group identifier of the terminal group to which the terminal belongs.

[0156] In some embodiments, the first frequency domain unit is the frequency domain unit that detects the synchronization signal block SSB.

[0157] In some embodiments, all terminals in the first cell correspond to the same first frequency domain unit;

[0158] wherein, the first frequency domain unit is configured by cell-specific signaling or broadcast signaling.

[0159] In some embodiments, the network-side device determines the second frequency domain unit according to at least one of the following:

[0160] The priority order of the frequency domain units in the first cell, the load of the frequency domain units in the first cell.

[0161] In some embodiments, when the load of the first frequency domain unit is greater than or equal to a first threshold, or when the load of the first frequency domain unit is greater than or equal to the first threshold for M consecutive time units, the network-side device determines the second frequency domain unit, where the second frequency domain unit satisfies at least one of the following:

[0162] The second frequency domain unit is the frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell with a load less than or equal to a second threshold, or the second frequency domain unit is the frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell with a load less than or equal to the second threshold for N consecutive time units; or,

[0163] If the loads of the frequency domain units in the first cell other than the first frequency domain unit are all greater than the second threshold, or if there is no frequency domain unit in the first cell with a load less than or equal to the second threshold for N consecutive time units, the second frequency domain unit is the frequency domain unit with the smallest load or the highest priority among all the frequency domain units in the first cell other than the first frequency domain unit; or,

[0164] If the loads of the frequency domain units in the first cell other than the first frequency domain unit are all greater than the second threshold, reduce the second threshold until there is a frequency domain unit in the first cell with a load less than or equal to the second threshold, and the second frequency domain unit is the frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell with a load less than or equal to the second threshold; or,

[0165] If the load of no frequency domain unit in the first cell is less than or equal to the second threshold within consecutive N time units, reduce the value of N or lower the second threshold until there is a frequency domain unit in the first cell whose load is less than or equal to the second threshold within consecutive N time units. The second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell whose load is less than or equal to the second threshold within consecutive N time units.

[0166] Wherein, both M and N are greater than zero.

[0167] In some embodiments, the first threshold is greater than or equal to the second threshold.

[0168] In some embodiments, the priority order of the frequency domain units in the first cell is determined based on at least one of the following rules:

[0169] The priority of the frequency domain unit containing the SSB resource is higher than that of the frequency domain unit not containing the SSB resource;

[0170] In the case where at least two frequency domain units both contain SSB resources, among the at least two frequency domain units, the priority of the frequency domain unit with a larger measured SS-RSRP value is higher than that of the frequency domain unit with a smaller measured SS-RSRP value;

[0171] In the case where at least two frequency domain units both contain SSB resources, among the at least two frequency domain units, the priority of the frequency domain unit with a larger measured SS-RSRQ value is higher than that of the frequency domain unit with a smaller measured SS-RSRQ value;

[0172] The priority of the frequency domain unit where the cell-defined SSB is located is higher than that of the frequency domain unit where the non-cell-defined SSB is located;

[0173] The priority of the frequency domain unit with a larger bandwidth is higher than that of the frequency domain unit with a smaller bandwidth;

[0174] The priority of the frequency domain unit with a smaller load is higher than that of the frequency domain unit with a larger load;

[0175] The priority of the frequency domain unit with a lower frequency point is higher than that of the frequency domain unit with a higher frequency point.

[0176] In some embodiments, the first information is carried by at least one of the following:

[0177] The PDSCH for sending SIB 1, the PDSCH for sending paging messages, the DCI associated with the paging message, the DCI associated with the PEI, system information.

[0178] In an embodiment of the present application, the terminal resides in a first frequency domain unit within a first cell after cell selection or cell reselection, where the first cell includes at least two frequency domain units, so that different terminals can reside in different frequency domain units of the first cell, and the load on different frequency domain units can be balanced. In addition, the first cell can be a cell integrating some scattered frequency domain units, avoiding cell selection or cell reselection for each scattered frequency domain unit.

[0179] For the method of frequency domain residence provided in the embodiments of the present application, the execution subject can be a device for frequency domain residence, or a processing unit in the device for frequency domain residence that executes the method of frequency domain residence. In the embodiments of the present application, the method of frequency domain residence executed by the device for frequency domain residence is taken as an example to illustrate the device for frequency domain residence provided in the embodiments of the present application.

[0180] Figure 5 Fig. shows a schematic block diagram of a device 400 for frequency domain residence according to an embodiment of the present application. As Figure 5 shown, the device 400 for frequency domain residence includes:

[0181] A processing unit 410, configured to reside in a first frequency domain unit within a first cell after cell selection or cell reselection;

[0182] wherein the first cell includes at least two frequency domain units.

[0183] In some embodiments, at least some of the at least two frequency domain units are discontinuous; or,

[0184] at least some of the at least two frequency domain units have different sizes.

[0185] In some embodiments, the first frequency domain unit is associated with the identifier of the terminal; or,

[0186] the first frequency domain unit is associated with the group identifier of the terminal group to which the terminal belongs.

[0187] In some embodiments, the first frequency domain unit is a frequency domain unit where a synchronization signal block SSB is detected.

[0188] In some embodiments, all terminals within the first cell correspond to the same first frequency domain unit;

[0189] wherein the first frequency domain unit is configured through cell-specific signaling or broadcast signaling.

[0190] In some embodiments, after the device 400 for frequency domain residence resides in the first frequency domain unit within the first cell after cell selection or cell reselection, the processing unit 410 is further configured to switch from the first frequency domain unit to a second frequency domain unit for residence.

[0191] In some embodiments, the device 400 for frequency-domain residence further includes:

[0192] A transceiver unit 420, configured to receive first information from a network-side device; wherein, the first information is used to indicate that the terminal resides in the second frequency-domain unit within the first cell.

[0193] In some embodiments, the processing unit 410 is specifically configured to:

[0194] According to the first information, switch from the first frequency-domain unit to the second frequency-domain unit for residence; wherein, the first information is used to indicate that the terminal resides in the second frequency-domain unit within the first cell.

[0195] In some embodiments, the processing unit 410 is specifically configured to:

[0196] Determine to switch from the first frequency-domain unit to the second frequency-domain unit for residence according to at least one of the following:

[0197] The priority order of the frequency-domain units within the first cell, the load of the frequency-domain units within the first cell.

[0198] In some embodiments, when the load of the first frequency-domain unit is greater than or equal to a first threshold, or when the load of the first frequency-domain unit is greater than or equal to the first threshold within consecutive M time units, the device 400 for frequency-domain residence determines to switch from the first frequency-domain unit to the second frequency-domain unit for residence, wherein the second frequency-domain unit satisfies at least one of the following:

[0199] The second frequency-domain unit is a frequency-domain unit with the smallest load, the highest priority, or randomly selected from the frequency-domain units within the first cell with a load less than or equal to a second threshold, or the second frequency-domain unit is a frequency-domain unit with the smallest load, the highest priority, or randomly selected from the frequency-domain units within the first cell with a load less than or equal to the second threshold within consecutive N time units;

[0200] If the loads of all frequency-domain units other than the first frequency-domain unit within the first cell are greater than the second threshold, or if there is no frequency-domain unit within the first cell with a load less than or equal to the second threshold within consecutive N time units, the second frequency-domain unit is a frequency-domain unit with the smallest load or the highest priority among all frequency-domain units other than the first frequency-domain unit within the first cell;

[0201] If the loads of the frequency domain units other than the first frequency domain unit in the first cell are all greater than the second threshold, decrease the second threshold until there is a frequency domain unit in the first cell whose load is less than or equal to the second threshold. The second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell whose loads are less than or equal to the second threshold.

[0202] If there is no frequency domain unit in the first cell whose load is less than or equal to the second threshold within N consecutive time units, decrease the value of N or decrease the second threshold until there is a frequency domain unit in the first cell whose load is less than or equal to the second threshold within N consecutive time units. The second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell whose loads are less than or equal to the second threshold within N consecutive time units.

[0203] Wherein, both M and N are greater than zero.

[0204] In some embodiments, the first threshold is greater than or equal to the second threshold.

[0205] In some embodiments, the first information is carried by at least one of the following:

[0206] The physical downlink shared channel PDSCH for transmitting the system information block SIB 1, the PDSCH for transmitting the paging message, the downlink control information DCI associated with the paging message, the DCI associated with the paging early indication PEI, the system information.

[0207] In some embodiments, the processing unit 410 is specifically configured to:

[0208] Reside by switching from the first frequency domain unit to the second frequency domain unit according to the second information.

[0209] Wherein, the second information includes at least one of the following: the periodic switching configuration of the frequency domain units in the first cell, the event triggering the switching of the frequency domain unit, the priority order of the frequency domain units in the first cell.

[0210] In some embodiments, the periodic switching configuration of the frequency domain units in the first cell is associated with at least one of the following: the number of frequency domain units included in the first cell, the time for the terminal to reside on each frequency domain unit in the first cell.

[0211] In some embodiments, when the second information includes the priority order of the frequency domain units in the first cell, the frequency domain residence device 400 further includes: a transceiver unit 420;

[0212] The transceiver unit 420 is configured to receive the relevant information of the frequency domain units in the first cell from the network side device;

[0213] The processing unit 410 is further configured to determine the priority order of the frequency domain units in the first cell according to the relevant information of the frequency domain units in the first cell;

[0214] Wherein, the relevant information of the frequency domain units in the first cell includes at least one of the following: the position or frequency point of the frequency domain unit, the bandwidth of the frequency domain unit, the position or type of the SSB, and the load of the frequency domain unit;

[0215] Wherein, the type of the SSB includes a cell-defined SSB and a non-cell-defined SSB.

[0216] In some embodiments, the processing unit 410 is specifically configured to:

[0217] In the case that the synchronization signal reference signal received power SS-RSRP measured on the first frequency domain unit is less than or equal to a third threshold, or, in the case that the synchronization signal reference signal received quality SS-RSRQ measured on the first frequency domain unit is less than or equal to a fourth threshold, switch from the first frequency domain unit to the second frequency domain unit for residence according to the second information.

[0218] In some embodiments, the priority order of the frequency domain units in the first cell is determined based on at least one of the following rules:

[0219] The priority of the frequency domain unit containing the SSB resource is higher than that of the frequency domain unit not containing the SSB resource;

[0220] In the case that at least two of the frequency domain units all contain SSB resources, among the at least two frequency domain units, the priority of the frequency domain unit with a larger measured SS-RSRP value is higher than that of the frequency domain unit with a smaller measured SS-RSRP value;

[0221] In the case that at least two of the frequency domain units all contain SSB resources, among the at least two frequency domain units, the priority of the frequency domain unit with a larger measured SS-RSRQ value is higher than that of the frequency domain unit with a smaller measured SS-RSRQ value;

[0222] The priority of the frequency domain unit where the cell-defined SSB is located is higher than that of the frequency domain unit where the non-cell-defined SSB is located;

[0223] The priority of the frequency domain unit with a larger bandwidth is higher than that of the frequency domain unit with a smaller bandwidth;

[0224] The priority of the frequency domain unit with a smaller load is higher than that of the frequency domain unit with a larger load;

[0225] The priority of a frequency domain unit with a lower frequency point is higher than that of a frequency domain unit with a higher frequency point.

[0226] In some embodiments, the processing unit 410 is further configured to detect a first signal only on the resident frequency domain units, where the first signal includes at least one of the following: SSB, paging message, PEI, tracking reference signal TRS; or,

[0227] The processing unit 410 is further configured to preferentially select to perform initial access on the resources of the resident frequency domain units.

[0228] In some embodiments, the processing unit 410 is further configured to determine whether the cell reselection condition is satisfied according to the maximum value of SS-RSRP or SS-RSRQ measured on all frequency domain units in the first cell.

[0229] In some embodiments, the above transceiver unit 420 may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system-on-chip. The processing unit 410 may be embedded in or independent of the processor of the terminal in a hardware form.

[0230] It should be understood that the frequency domain resident device 400 according to the embodiments of the present application may correspond to the terminal in the method embodiments of the present application, and each unit in the frequency domain resident device 400 is respectively for implementing Figure 3 the corresponding processes of the terminal in the method 200 shown. For the sake of brevity, details are not described herein again.

[0231] Therefore, in the embodiments of the present application, the terminal resides in a first frequency domain unit in a first cell after cell selection or cell reselection, where the first cell includes at least two frequency domain units, so that different terminals can reside in different frequency domain units of the first cell, and the load on different frequency domain units can be balanced. In addition, the first cell may be a cell integrating some scattered frequency domain units, avoiding cell selection or cell reselection for each scattered frequency domain unit.

[0232] Figure 6 A schematic block diagram of a frequency domain resident device 500 according to an embodiment of the present application is shown. As Figure 6 shown, the frequency domain resident device 500 includes:

[0233] A transceiver unit 510, configured to send first information to the terminal;

[0234] where the first information is used to instruct the terminal to reside in a second frequency domain unit in a first cell, and the terminal resides in a first frequency domain unit in the first cell after cell selection or cell reselection, and the first cell includes at least two frequency domain units.

[0235] In some embodiments, at least some of the at least two frequency domain units are discontinuous; or,

[0236] at least some of the at least two frequency domain units have different sizes.

[0237] In some embodiments, the first frequency domain unit is associated with the identifier of the terminal; or,

[0238] the first frequency domain unit is associated with the group identifier of the terminal group to which the terminal belongs.

[0239] In some embodiments, the first frequency domain unit is the frequency domain unit in which a synchronization signal block (SSB) is detected.

[0240] In some embodiments, all terminals in the first cell correspond to the same first frequency domain unit;

[0241] wherein, the first frequency domain unit is configured by cell-specific signaling or broadcast signaling.

[0242] In some embodiments, the apparatus 500 for frequency domain residence further includes:

[0243] a processing unit 520, configured to determine the second frequency domain unit according to at least one of the following:

[0244] the priority order of the frequency domain units in the first cell, the load of the frequency domain units in the first cell.

[0245] In some embodiments, when the load of the first frequency domain unit is greater than or equal to a first threshold, or when the load of the first frequency domain unit is greater than or equal to the first threshold for M consecutive time units, the apparatus 500 for frequency domain residence determines the second frequency domain unit, wherein the second frequency domain unit satisfies at least one of the following:

[0246] the second frequency domain unit is the frequency domain unit with the smallest load or the highest priority or a randomly selected one among the frequency domain units in the first cell with a load less than or equal to a second threshold, or the second frequency domain unit is the frequency domain unit with the smallest load or the highest priority or a randomly selected one among the frequency domain units in the first cell with a load less than or equal to the second threshold for N consecutive time units;

[0247] if the loads of the frequency domain units other than the first frequency domain unit in the first cell are all greater than the second threshold, or if there is no frequency domain unit in the first cell with a load less than or equal to the second threshold for N consecutive time units, the second frequency domain unit is the frequency domain unit with the smallest load or the highest priority among all the frequency domain units other than the first frequency domain unit in the first cell; or,

[0248] If the loads of the frequency domain units other than the first frequency domain unit in the first cell are all greater than the second threshold, reduce the second threshold until there is a frequency domain unit in the first cell whose load is less than or equal to the second threshold, and the second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell whose loads are less than or equal to the second threshold; or,

[0249] If there is no frequency domain unit in the first cell whose load is less than or equal to the second threshold within N consecutive time units, reduce the value of N or reduce the second threshold until there is a frequency domain unit in the first cell whose load is less than or equal to the second threshold within N consecutive time units, and the second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell whose loads are less than or equal to the second threshold within N consecutive time units;

[0250] wherein both M and N are greater than zero.

[0251] In some embodiments, the first threshold is greater than or equal to the second threshold.

[0252] In some embodiments, the priority order of the frequency domain units in the first cell is determined based on at least one of the following rules:

[0253] The priority of the frequency domain unit containing the SSB resource is higher than that of the frequency domain unit not containing the SSB resource;

[0254] In the case where at least two of the frequency domain units contain SSB resources, among the at least two frequency domain units, the priority of the frequency domain unit with a larger measured SS-RSRP value is higher than that of the frequency domain unit with a smaller measured SS-RSRP value;

[0255] In the case where at least two of the frequency domain units contain SSB resources, among the at least two frequency domain units, the priority of the frequency domain unit with a larger measured SS-RSRQ value is higher than that of the frequency domain unit with a smaller measured SS-RSRQ value;

[0256] The priority of the frequency domain unit where the cell-defined SSB is located is higher than that of the frequency domain unit where the non-cell-defined SSB is located;

[0257] The priority of the frequency domain unit with a larger bandwidth is higher than that of the frequency domain unit with a smaller bandwidth;

[0258] The priority of the frequency domain unit with a smaller load is higher than that of the frequency domain unit with a larger load;

[0259] The priority of the frequency domain unit with a lower frequency point is higher than that of the frequency domain unit with a higher frequency point.

[0260] In some embodiments, the first information is carried by at least one of the following:

[0261] The physical downlink shared channel PDSCH for transmitting the system information block SIB 1, the PDSCH for transmitting a paging message, the downlink control information DCI associated with the paging message, the DCI associated with the paging early indication PEI, the system information.

[0262] In some embodiments, the above transceiver unit 510 may be a communication interface or a transceiver, or an input / output interface of a communication chip or a system-on-chip.

[0263] It should be understood that the frequency-domain residence device 500 according to the embodiments of the present application may correspond to the network-side device in the method embodiments of the present application, and each unit in the frequency-domain residence device 500 is respectively for implementing Figure 4 The corresponding processes of the network-side device in the method 300 shown. For the sake of brevity, they will not be elaborated here.

[0264] Therefore, in the embodiments of the present application, the terminal resides in the first frequency-domain unit within the first cell after cell selection or cell reselection, where the first cell includes at least two frequency-domain units, so that different terminals can reside in different frequency-domain units of the first cell, and the load on different frequency-domain units can also be balanced. In addition, the first cell may be a cell integrating some scattered frequency-domain units, avoiding cell selection or cell reselection for each scattered frequency-domain unit.

[0265] The frequency-domain residence device in the embodiments of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or a network-side device, or other devices other than terminals or network-side devices. Exemplarily, the terminal may include but is not limited to the types of the above-listed terminal 11, the network-side device may include but is not limited to the types of the above-listed network-side device 12, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0266] The frequency-domain residence device provided in the embodiments of the present application can implement Figure 3 or Figure 4 Each process implemented by the method embodiments, and achieve the same technical effects. For the sake of avoiding repetition, they will not be elaborated here.

[0267] Such as Figure 7As shown in the figure, an embodiment of the present application further provides a communication device 600, including a processor 601 and a memory 602, and a program or instruction that can run on the processor 601 is stored on the memory 602. For example, when the communication device 600 is a terminal, when the program or instruction is executed by the processor 601, each step executed by the terminal in the method embodiment of the above frequency domain residence is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be elaborated here. When the communication device 600 is a network side device, when the program or instruction is executed by the processor 601, each step executed by the network side device in the method embodiment of the above frequency domain residence is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be elaborated here.

[0268] An embodiment of the present application further provides a terminal, including a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement as Figure 3 shown in the steps executed by the terminal in the method embodiment. This terminal embodiment corresponds to the above terminal side method embodiment, and each implementation process and implementation manner of the above method embodiment can be applied to this terminal embodiment, and the same technical effect can be achieved. Specifically, Figure 8 is a schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0269] The terminal 700 includes, but is not limited to, at least some components such as a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, and a processor 710.

[0270] Those skilled in the art can understand that the terminal 700 may further include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 710 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 8 The terminal structure shown in does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine some components, or have different component arrangements, which will not be elaborated here.

[0271] It should be understood that in the embodiments of the present application, the input unit 704 may include a Graphics Processing Unit (GPU) 7041 and a microphone 7042. The graphics processor 7041 processes the image data of static pictures or videos obtained by an image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of, for example, a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. The other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, power on / off keys, etc.), a trackball, a mouse, a joystick, which will not be elaborated herein.

[0272] In the embodiments of the present application, after receiving downlink data from a network side device, the radio frequency unit 701 may transmit it to the processor 710 for processing; in addition, the radio frequency unit 701 may send uplink data to the network side device. Generally, the radio frequency unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0273] The memory 709 can be used to store software programs or instructions and various data. The memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 709 may include volatile memory or non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable ROM (PROM), an erasable programmable ROM (EPROM), an electrically erasable programmable ROM (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static RAM (SRAM), a dynamic RAM (DRAM), a synchronous DRAM (SDRAM), a double data rate SDRAM (DDR SDRAM), an enhanced SDRAM (ESDRAM), a synch link DRAM (SLDRAM), and a direct rambus RAM (DRRAM). The memory 709 in the embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

[0274] The processor 710 may include at least one processing unit; optionally, the processor 710 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above modem processor may not be integrated into the processor 710 either.

[0275] Among them, the processor 710 is used to reside in a first frequency domain unit within a first cell after cell selection or cell reselection; among them, the first cell includes at least two frequency domain units.

[0276] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment may refer to the relevant descriptions of the method embodiments and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0277] The embodiments of the present application further provide a network-side device, including a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to run programs or instructions to implement as Figure 3 the steps performed by the network-side device in the method embodiments shown. This network-side device embodiment corresponds to the above-mentioned network-side device method embodiments. Each implementation process and implementation manner of the above method embodiments can be applied to this network-side device embodiment, and the same technical effects can be achieved. For the sake of brevity, details are not described herein again.

[0278] Specifically, the embodiments of the present application further provide a network-side device. As Figure 9 shown, the network-side device 800 includes: an antenna 81, a radio frequency device 82, a baseband device 83, a processor 84, and a memory 85. The antenna 81 is connected to the radio frequency device 82. In the uplink direction, the radio frequency device 82 receives information through the antenna 81 and sends the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be sent and sends it to the radio frequency device 82. After processing the received information, the radio frequency device 82 sends it out through the antenna 81.

[0279] The method performed by the network-side device in the above embodiments can be implemented in the baseband device 83, and the baseband device 83 includes a baseband processor.

[0280] The baseband device 83 may include, for example, at least one baseband board, and at least two chips are provided on the baseband board. As Figure 8 shown, one of the chips is, for example, a baseband processor, which is connected to the memory 85 through a bus interface to call the programs in the memory 85 and execute the operations of the network device shown in the above method embodiments.

[0281] The network-side device may further include a network interface 86, and this interface is, for example, a Common Public Radio Interface (CPRI).

[0282] Specifically, the network-side device 800 in the embodiments of the present application further includes: instructions or programs stored on the memory 85 and executable on the processor 84. The processor 84 calls the instructions or programs in the memory 85 to execute Figure 6 the methods performed by the respective units shown and achieve the same technical effects. To avoid repetition, details are not described herein again.

[0283] The embodiments of the present application further provide a readable storage medium, on which programs or instructions are stored. When the programs or instructions are executed by a processor, the various processes of the method embodiments of the above-mentioned frequency-domain residence are implemented, and the same technical effects can be achieved. To avoid repetition, details are not described herein again.

[0284] Among them, the processor is the processor in the terminal described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical discs, etc. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0285] Another embodiment of the present application provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement each process of the above method embodiment of frequency domain residence, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0286] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip, etc.

[0287] Another embodiment of the present application provides a computer program / program product. The computer program / program product is stored in a storage medium. The computer program / program product is executed by at least one processor to implement each process of the above method embodiment of frequency domain residence, and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0288] Another embodiment of the present application provides a communication system, including: a terminal and a network-side device. Among them, the terminal can be used to execute the steps performed by the terminal in the above method of frequency domain residence, and the network-side device can be used to execute the steps performed by the network-side device in the above method of frequency domain residence.

[0289] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0290] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of computer software products plus the necessary general hardware platforms, and of course, they can also be implemented by hardware. The computer software products are stored in storage media (such as ROM, RAM, magnetic disks, optical disks, etc.) and include several instructions for causing a terminal or a network-side device to execute the methods described in various embodiments of the present application.

[0291] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the purpose of the present application and the scope protected by the claims. These embodiments are all within the protection scope of the present application.

Claims

1. A method for frequency-domain residence, characterized in that, it includes: The terminal resides in a first frequency-domain unit within a first cell after cell selection or cell reselection; wherein, the first cell includes at least two frequency-domain units.

2. The method according to claim 1, characterized in that, at least some of the at least two frequency-domain units are discontinuous; or, at least some of the at least two frequency-domain units have different sizes.

3. The method according to claim 1 or 2, characterized in that, the first frequency-domain unit is associated with the identifier of the terminal; or, the first frequency-domain unit is associated with the group identifier of the terminal group to which the terminal belongs.

4. The method according to claim 1 or 2, characterized in that, the first frequency-domain unit is the frequency-domain unit where a Synchronization Signal Block (SSB) is detected.

5. The method according to claim 1 or 2, characterized in that, all terminals within the first cell correspond to the same first frequency-domain unit; wherein, the first frequency-domain unit is configured through cell-specific signaling or broadcast signaling.

6. The method according to any one of claims 1 to 5, characterized in that, after the terminal resides in the first frequency-domain unit within the first cell after cell selection or cell reselection, the method further includes: The terminal switches from the first frequency-domain unit to a second frequency-domain unit for residence.

7. The method according to claim 6, characterized in that, the step of the terminal switching from the first frequency-domain unit to a second frequency-domain unit for residence includes: The terminal switches from the first frequency-domain unit to the second frequency-domain unit for residence according to first information; wherein, the first information is used to indicate that the terminal resides in the second frequency-domain unit within the first cell.

8. The method according to claim 6, characterized in that, the step of the terminal switching from the first frequency-domain unit to a second frequency-domain unit for residence includes: The terminal determines to switch from the first frequency-domain unit to the second frequency-domain unit for residence according to at least one of the following: The priority order of frequency-domain units within the first cell, the load of frequency-domain units within the first cell.

9. The method according to claim 8, characterized in that, the step of the terminal determining to switch from the first frequency-domain unit to a second frequency-domain unit for residence according to the load of frequency-domain units within the first cell includes: When the load of the first frequency-domain unit is greater than or equal to a first threshold, or when the load of the first frequency-domain unit is greater than or equal to the first threshold within consecutive M time units, the terminal determines to switch from the first frequency-domain unit to the second frequency-domain unit for residence, where the second frequency-domain unit satisfies at least one of the following: The second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell with a load less than or equal to a second threshold, or the second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell with a load less than or equal to the second threshold within N consecutive time units; If the loads of the frequency domain units in the first cell other than the first frequency domain unit are all greater than the second threshold, or if there is no frequency domain unit in the first cell with a load less than or equal to the second threshold within N consecutive time units, the second frequency domain unit is the frequency domain unit with the smallest load or the highest priority among all the frequency domain units in the first cell other than the first frequency domain unit; If the loads of the frequency domain units in the first cell other than the first frequency domain unit are all greater than the second threshold, reduce the second threshold until there is a frequency domain unit in the first cell with a load less than or equal to the second threshold, and the second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell with a load less than or equal to the second threshold; If there is no frequency domain unit in the first cell with a load less than or equal to the second threshold within N consecutive time units, reduce the value of N or lower the second threshold until there is a frequency domain unit in the first cell with a load less than or equal to the second threshold within N consecutive time units, and the second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell with a load less than or equal to the second threshold within N consecutive time units; Wherein, both M and N are greater than zero.

10. The method according to claim 6, characterized in that the step of the terminal switching from the first frequency domain unit to the second frequency domain unit for residence includes: the terminal switching from the first frequency domain unit to the second frequency domain unit for residence according to the second information; wherein, the second information includes at least one of the following: the periodic switching configuration of the frequency domain units in the first cell, the event triggering the frequency domain unit switching, the priority order of the frequency domain units in the first cell.

11. The method according to claim 10, characterized in that the periodic switching configuration of the frequency domain units in the first cell is associated with at least one of the following: the number of frequency domain units included in the first cell, the residence time of the terminal on each frequency domain unit in the first cell.

12. The method according to claim 10, characterized in that when the second information includes the priority order of the frequency domain units in the first cell, the method further includes: the terminal receiving the relevant information of the frequency domain units in the first cell from the network side device; the terminal determining the priority order of the frequency domain units in the first cell according to the relevant information of the frequency domain units in the first cell; wherein, the relevant information of the frequency domain units in the first cell includes at least one of the following: the position or frequency point of the frequency domain unit, the bandwidth of the frequency domain unit, the position or type of the SSB, the load of the frequency domain unit.

13. The method according to any one of claims 10 to 12, wherein, the step that the terminal switches from the first frequency domain unit to the second frequency domain unit for residence according to the second information includes: when the synchronization signal reference signal received power (SS-RSRP) measured on the first frequency domain unit is less than or equal to a third threshold, or when the synchronization signal reference signal received quality (SS-RSRQ) measured on the first frequency domain unit is less than or equal to a fourth threshold, the terminal switches from the first frequency domain unit to the second frequency domain unit for residence according to the second information.

14. The method according to any one of claims 8, 9, 10 to 13, wherein, the priority order of the frequency domain units in the first cell is determined based on at least one of the following rules: The priority of the frequency domain unit containing the SSB resource is higher than that of the frequency domain unit not containing the SSB resource; When at least two of the frequency domain units all contain SSB resources, among the at least two frequency domain units, the priority of the frequency domain unit with a larger measured SS-RSRP value is higher than that of the frequency domain unit with a smaller measured SS-RSRP value; When at least two of the frequency domain units all contain SSB resources, among the at least two frequency domain units, the priority of the frequency domain unit with a larger measured SS-RSRQ value is higher than that of the frequency domain unit with a smaller measured SS-RSRQ value; The priority of the frequency domain unit where the cell-defined SSB is located is higher than that of the frequency domain unit where the non-cell-defined SSB is located; The priority of the frequency domain unit with a larger bandwidth is higher than that of the frequency domain unit with a smaller bandwidth; The priority of the frequency domain unit with a smaller load is higher than that of the frequency domain unit with a larger load; The priority of the frequency domain unit with a lower frequency point is higher than that of the frequency domain unit with a higher frequency point.

15. The method according to any one of claims 1 to 14, wherein, the method further includes: The terminal detects a first signal only on the frequency domain unit where it resides, where the first signal includes at least one of the following: SSB, paging message, PEI, tracking reference signal (TRS); or, The terminal preferentially selects to perform initial access on the resources of the frequency domain unit where it resides.

16. The method according to any one of claims 1 to 15, wherein, the method further includes: The terminal determines whether the cell reselection condition is satisfied according to the maximum value of the SS-RSRP or SS-RSRQ measured on all the frequency domain units in the first cell.

17. A method for frequency domain residence, wherein, it includes: The network side device sends first information to the terminal; wherein, the first information is used to instruct the terminal to reside in a second frequency domain unit in the first cell, the terminal resides in a first frequency domain unit in the first cell after cell selection or cell reselection, and the first cell includes at least two frequency domain units.

18. The method according to claim 17, wherein, at least some of the at least two frequency domain units are discontinuous; or, At least some of the at least two frequency domain units have different sizes.

19. The method according to claim 17 or 18, wherein, the first frequency domain unit is associated with the identifier of the terminal; or, the first frequency domain unit is associated with the group identifier of the terminal group to which the terminal belongs.

20. The method according to claim 17 or 18, wherein, the first frequency domain unit is the frequency domain unit in which a synchronization signal block SSB is detected.

21. The method according to claim 17 or 18, wherein, all terminals in the first cell correspond to the same first frequency domain unit; wherein, the first frequency domain unit is configured by cell-specific signaling or broadcast signaling.

22. The method according to any one of claims 17 to 21, wherein, the method further includes: the network side device determines the second frequency domain unit according to at least one of the following: the priority order of the frequency domain units in the first cell, the load of the frequency domain units in the first cell.

23. The method according to claim 22, wherein, the step of the network side device determining the second frequency domain unit according to at least one of the following includes: when the load of the first frequency domain unit is greater than or equal to a first threshold, or when the load of the first frequency domain unit is greater than or equal to the first threshold within consecutive M time units, the network side device determines the second frequency domain unit, wherein the second frequency domain unit satisfies at least one of the following: the second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell with a load less than or equal to a second threshold, or the second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell with a load less than or equal to the second threshold within consecutive N time units; if the loads of the frequency domain units in the first cell other than the first frequency domain unit are all greater than the second threshold, or if there is no frequency domain unit in the first cell with a load less than or equal to the second threshold within consecutive N time units, the second frequency domain unit is the frequency domain unit with the smallest load or the highest priority among all the frequency domain units in the first cell other than the first frequency domain unit; if the loads of the frequency domain units in the first cell other than the first frequency domain unit are all greater than the second threshold, reduce the second threshold until there is a frequency domain unit in the first cell with a load less than or equal to the second threshold, and the second frequency domain unit is a frequency domain unit with the smallest load, the highest priority, or randomly selected from the frequency domain units in the first cell with a load less than or equal to the second threshold. If the load of no frequency domain unit in the first cell is less than or equal to the second threshold within N consecutive time units, reduce the value of N or lower the second threshold until there exists a frequency domain unit in the first cell whose load is less than or equal to the second threshold within N consecutive time units, and the second frequency domain unit is a frequency domain unit with the smallest load or the highest priority or randomly selected from the frequency domain units in the first cell whose load is less than or equal to the second threshold within N consecutive time units; wherein both M and N are greater than zero.

24. The method according to claim 22 or 23, characterized in that, the priority order of the frequency domain units in the first cell is determined based on at least one of the following rules: The priority of the frequency domain unit containing the SSB resource is higher than that of the frequency domain unit not containing the SSB resource; In the case where at least two of the frequency domain units contain SSB resources, among the at least two frequency domain units, the priority of the frequency domain unit with a larger measured SS-RSRP value is higher than that of the frequency domain unit with a smaller measured SS-RSRP value; In the case where at least two of the frequency domain units contain SSB resources, among the at least two frequency domain units, the priority of the frequency domain unit with a larger measured SS-RSRQ value is higher than that of the frequency domain unit with a smaller measured SS-RSRQ value; The priority of the frequency domain unit where the cell-defined SSB is located is higher than that of the frequency domain unit where the non-cell-defined SSB is located; The priority of the frequency domain unit with a larger bandwidth is higher than that of the frequency domain unit with a smaller bandwidth; The priority of the frequency domain unit with a smaller load is higher than that of the frequency domain unit with a larger load; The priority of the frequency domain unit with a lower frequency point is higher than that of the frequency domain unit with a higher frequency point.

25. A frequency domain residence device, characterized in that, comprising: a processing unit for residing in a first frequency domain unit in the first cell after cell selection or cell reselection; wherein the first cell includes at least two frequency domain units.

26. The device according to claim 25, characterized in that, at least some of the at least two frequency domain units are discontinuous; or, at least some of the at least two frequency domain units have different sizes.

27. The device according to claim 25 or 26, characterized in that, after the frequency domain residence device resides in the first frequency domain unit in the first cell after cell selection or cell reselection, the processing unit is further configured to switch from the first frequency domain unit to a second frequency domain unit for residence.

28. The device according to claim 27, characterized in that, the processing unit is specifically configured to: switch from the first frequency domain unit to the second frequency domain unit for residence according to the first information; wherein the first information is used to instruct the frequency domain residence device to reside in the second frequency domain unit in the first cell.

29. The device according to claim 27, characterized in that, the processing unit is specifically configured to: determine to switch from the first frequency domain unit to the second frequency domain unit for residence according to at least one of the following: The priority order of the frequency domain units in the first cell, and the load of the frequency domain units in the first cell.

30. The apparatus according to claim 27, wherein, the processing unit is specifically configured to: switch from the first frequency domain unit to the second frequency domain unit for residence according to the second information; wherein the second information includes at least one of the following: the periodic switching configuration of the frequency domain units in the first cell, an event triggering the switching of the frequency domain unit, and the priority order of the frequency domain units in the first cell.

31. A frequency domain residence apparatus, wherein, it includes: a transceiver unit, configured to send first information to a terminal; wherein the first information is used to instruct the terminal to reside in a second frequency domain unit in the first cell, and the terminal resides in a first frequency domain unit in the first cell after cell selection or cell reselection, and the first cell includes at least two frequency domain units.

32. The apparatus according to claim 31, wherein, at least some of the at least two frequency domain units are discontinuous; or, at least some of the at least two frequency domain units have different sizes.

33. The apparatus according to claim 31 or 32, wherein, the frequency domain residence apparatus further includes: a processing unit, configured to determine the second frequency domain unit according to at least one of the following: the priority order of the frequency domain units in the first cell, and the load of the frequency domain units in the first cell.

34. A terminal, wherein, it includes a transceiver, a processor, and a memory, and the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the frequency domain residence method according to any one of claims 1 to 16.

35. A network side device, wherein, it includes a transceiver, a processor, and a memory, and the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the frequency domain residence method according to any one of claims 17 to 24.

36. A readable storage medium, wherein, a program or instruction is stored on the readable storage medium, and when the program or instruction is executed by a processor, it implements the steps of the frequency domain residence method according to any one of claims 1-16, or implements the steps of the frequency domain residence method according to any one of claims 17 to 24.

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