Method executed by user equipment, and user equipment

Abstract

The present invention provides a method executed by a user equipment, and a user equipment. The method executed by a user equipment (UE) comprises: the UE receives, from a base station, configuration parameters and paging parameters of wake-up signal (WUS) resources; and on the basis of iPO as a first parameter, Ng as a second parameter, iUE as a third parameter and Npo as a fourth parameter, the UE determines an index Wus_index of a WUS to be detected by the UE within a total set of WUSs transmitted in a WUS resource set. iPO represents the index of a paging occasion (PO) of the UE in a paging cycle; Ng is the total number of WUSs used by the UE and associated with one PO; iUE is a grouping index used by the UE, grouping information on the PO being determined on the basis of said grouping index; and Npo is the number of POs associated with one WUS resource set.

Description

Method performed by user equipment and user equipment Technical Field

[0001] The present invention relates to the technical field of wireless communications, and in particular to a method for determining downlink frequency domain resources executed by a user equipment and corresponding user equipment. Background Art

[0002] This section introduces various aspects that may help to better understand the present invention. Therefore, the statements in this section should be read in this light and should not be understood as an admission of what is or is not prior art.

[0003] 5G systems can be used for mobile phones and various vertical applications. In addition to latency, reliability, availability, etc., the energy efficiency of user equipment is also a key factor for 5G. In the current system, 5G devices usually consume tens of milliwatts in the RRC idle / inactive state and hundreds of milliwatts in the RRC connected state. Depending on different application scenarios, 5G devices may need to be charged weekly or daily. Therefore, designs that further extend battery life are necessary to improve energy efficiency and provide a better user experience. For devices that use micro batteries or are inconvenient to charge, such as sensors, automatic controllers, wearable devices, etc., the standby time may be 1-2 weeks or longer, and improving their energy efficiency is even more critical.

[0004] User equipment can typically use discontinuous reception (DRX or eDRX) to save power. Power consumption depends on the configured period, such as the length of the paging cycle. To meet battery life requirements, DRX or eDRX cycles with very large period values ​​can be used, but this results in high latency, making it unsuitable for some scenarios. One such scenario involves applications that require both long battery life and low latency, such as fire detection and extinguishing equipment, which require response times of only 1-2 seconds. Therefore, research is needed on ultra-low power mechanisms with low latency, for example, latency that is less than the latency introduced by existing eDRX technologies.

[0005] In current systems, to ensure connectivity, user equipment (UEs) must periodically wake up during each DRX cycle to monitor control channels. Even when there is no data transmission targeted at the UE, the UE still consumes power periodically. If the UE could wake up only when service needs arise, such as when being paged, the UE's power consumption would be significantly reduced. Therefore, a design can be implemented to configure the UE with an ultra-low-power receiver to detect the wake-up signal (WUS) sent by the base station. The UE's main receiver can remain dormant until the ultra-low-power receiver receives the WUS signal and wakes it up to process the data. This reduces power consumption and latency while ensuring the proper functioning of UE services. To achieve this design goal, the system presents several challenges, such as which WUS signals the UE should detect among the multiple WUS signals sent by the base station, how to locate the corresponding indication information after detecting a WUS signal, and how to perform relevant actions after receiving the indication information.

[0006] Summary of the Invention

[0007] In order to solve at least part of the above problems, the present invention provides a method performed by a user equipment and the user equipment.

[0008] According to a first aspect of the present invention, a method performed by a user equipment UE is provided, comprising: the UE receiving configuration parameters and paging parameters of a wake-up signal WUS resource from a base station; and the UE determining, based on iPO as the first parameter, Ng as the second parameter, iUE as the third parameter, and Npo as the fourth parameter, the sequence number Wus_index of the WUS that the UE needs to detect in the total set of WUS transmitted by the WUS resource set, wherein: iPO: represents the sequence number of the paging opportunity PO of the UE in the paging cycle; Ng: the total number of WUSs used by the UE associated with one PO; iUE: the group sequence number used by the UE, and the group information on the PO is determined based on the group sequence number; Npo: the number of POs associated with a WUS resource set.

[0009] In the method of the first aspect above, preferably, when the mapping of WUS resources to user subgroups in the network is performed according to the intra-PO priority method, the Wus_index is determined by the following formula 1: Wus_index=(iPO*Ng+iUE)%(Npo*Ng) (Formula 1),

[0010] in,

[0011] %: Modulo operation.

[0012] In the method of the first aspect above, preferably, when the size of the total WUS set transmitted by the WUS resource set may be smaller than Npo*Ng, the Wus_index is determined by the following formula 2: Wus_index=(iPO*Ng+iUE)%(min((Npo*Ng), Nz)) (Formula 2),

[0013] in,

[0014] min: to take the smaller value;

[0015] Nz: The size of the total WUS set transmitted by a WUS resource set.

[0016] In the method of the first aspect above, preferably, when the mapping of WUS resources to user subgroups is performed according to the priority mapping between POs, the Wus_index is determined by the following formula 3: Wus_index=(iUE*Ng+(iPO%Npo))%(Npo*Ng) (Formula 3),

[0017] in,

[0018] %: Modulo operation.

[0019] In the method of the first aspect above, preferably, when the size of the total WUS set transmitted by the WUS resource set may be smaller than Npo*Ng, the Wus_index is determined by the following formula 4: Wus_index=(iUE*Ng+(iPO%Npo))%min((Npo*Ng), Nz) (Formula 4),

[0020] in,

[0021] min: to take the smaller value;

[0022] Nz: The size of the total WUS set transmitted by a WUS resource set.

[0023] In the method of the first aspect above, preferably, when each WUS resource in the WUS resource set uses the same WUS set size Nx,

[0024] The UE further determines the sequence number igroup of the WUS resource in the resource set by the following formula 5, and / or further determines the sequence number isub of the WUS resource used to indicate the UE indication value by the following formula 6, igroup=floor(Wus_index / Nx) (Formula 5) isub=Wus_index%Nx (Formula 6),

[0025] in,

[0026] Nx: The number of WUSs that can be transmitted in each WUS resource, or the size of a WUS set.

[0027] In the method of the first aspect above, preferably, when some resources in the WUS resource set configured by the network are unavailable,

[0028] The Wus_index is determined by the following formula 7: Wus_index=(iPO*Ng+iUE)%(min((Npo*Ng), Nz_a)) (Formula 7),

[0029] in,

[0030] min: to take the smaller value;

[0031] %: modulo operation;

[0032] Nz_a: the total number of available WUS in a WUS resource set,

[0033] in,

[0034] The WUS set size on each resource in the WUS resource set is the same, Nz_a=Nft_a*Nx,

[0035] Nft_a: the number of available WUS resources in the WUS resource set in a certain period,

[0036] Nx: The maximum number of WUSs that can be transmitted in each WUS resource, or the size of a WUS set.

[0037] In the method of the first aspect above, preferably, when some resources in the WUS resource set configured by the network are unavailable,

[0038] The Wus_index is determined by the following formula 8: Wus_index=(iUE*Ng+(iPO%Npo))%min((Npo*Ng), Nz_a) (Formula 8),

[0039] in,

[0040] min: to take the smaller value;

[0041] %: modulo operation;

[0042] Nz_a: the total number of available WUS in a WUS resource set,

[0043] in,

[0044] The WUS set size on each resource in the WUS resource set is the same, Nz_a=Nft_a*Nx,

[0045] Nft_a: the number of available WUS resources in the WUS resource set in a certain period,

[0046] Nx: The maximum number of WUSs that can be transmitted in each WUS resource, or the size of a WUS set.

[0047] In the method of the first aspect above, preferably, when a bitmap is used in WUS for indication, the UE determines whether to detect PO on the PO of the paging cycle corresponding to the WUS resource set based on information indicated by one or more bits.

[0048] In addition, according to a second aspect of the present invention, there is provided a user equipment, comprising: a processor; and a memory storing instructions, wherein the instructions execute the above method when executed by the processor.

[0049] Effects of the Invention

[0050] According to the present invention, power consumption of user equipment can be reduced and low delay can be achieved in wireless communication. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The above and other features of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0052] FIG. 1 is a schematic diagram showing an example of a specific resource allocation method.

[0053] FIG2 is a schematic flowchart showing an example of a method executed by a user equipment UE in embodiment 1.

[0054] FIG3 is a diagram showing an example of the correspondence between WUS resource sets and paging occasions PO.

[0055] FIG4 is a diagram showing another example of the correspondence between WUS resource sets and paging occasions PO.

[0056] FIG5 is a block diagram showing a user equipment UE according to the present invention. DETAILED DESCRIPTION

[0057] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the present invention is not limited to the specific embodiments described below, which are provided merely as examples to convey the scope of the subject matter to those skilled in the art. In addition, for the sake of brevity, detailed descriptions of known technologies not directly related to the present invention are omitted to prevent confusion in understanding the present invention.

[0058] Generally, unless clearly given and / or implied different meanings in the context of using the term, all terms used in this article will be interpreted according to their ordinary meaning in the relevant technical field. Unless clearly stated, all references to one element, device, assembly, part, step, etc. should be openly interpreted as referring to at least one instance of this element, device, assembly, part, step, etc. Unless a step must be clearly described as being after or before another step and / or implicitly a step must be after or before another step, the steps of any method disclosed herein do not have to be performed in the exact order disclosed. Where appropriate, any feature of any embodiment disclosed herein may be applicable to any other embodiment. Equally, any advantage of any embodiment may be applicable to any other embodiment, and vice versa.

[0059] The following describes various embodiments of the present invention using a 5G / NR mobile communication system and its subsequent evolutionary versions as example application environments. However, it should be noted that the present invention is not limited to the following embodiments and is applicable to many other wireless communication systems, such as communication systems after 5G, as well as 4G and 3G mobile communication systems before 5G, 802.11 wireless networks, and the like.

[0060] The following describes some of the terms used in this disclosure. Unless otherwise specified, the terms used in this disclosure are defined herein. The terms used in this disclosure may be named differently in LTE, LTE-Advanced, LTE-Advanced Pro, NR, and later or other communication systems. However, this disclosure uses unified terminology. When applied to a specific system, the terms can be replaced with those used in the corresponding system.

[0061] 3GPP: 3rd Generation Partnership Project

[0062] LTE: Long Term Evolution

[0063] NR: New Radio, New Wireless, New Air Interface

[0064] UE: User Equipment

[0065] gNB: NR base station

[0066] FR1: Frequency range 1 as defined in TS 38.104, frequency range 1 defined by TS38.104

[0067] FR2: Frequency range 2 as defined in TS 38.104, frequency range 2 defined by TS38.104

[0068] BWP: BandWidth Part, bandwidth fragment / part

[0069] SFN: System frame number, system frame number

[0070] OFDM: Orthogonal Frequency Division Multiplexing

[0071] SCS: sub-carrier spacing, sub-carrier spacing

[0072] RB: Resource Block

[0073] TDD: Time Division Duplexing

[0074] FDD: Frequency Division Duplexing

[0075] CSI: Channel State Information

[0076] DCI: Downlink Control Information, downlink control information

[0077] CRC: Cyclic Redundancy Check

[0078] QCL: Quasi co-location

[0079] HARQ: Hybrid Automatic Repeat Request

[0080] CORESET: Control resource set, control resource set

[0081] MIB: Master Information Block

[0082] SIB: system information block

[0083] SSB: SS / PBCH block, synchronization signal / physical broadcast channel block

[0084] SRS: Sounding Reference Signal, detection reference signal

[0085] DMRS: Demodulation Reference Signal

[0086] CSI-RS: Channel State Information Reference Signal

[0087] RACH: random-access channel, random access channel

[0088] PBCH: Physical broadcast channel

[0089] PUCCH: Physical Uplink Control Channel, physical uplink control channel

[0090] PUSCH: Physical Uplink Shared Channel, physical uplink shared channel

[0091] PRACH: Physical random-access channel, physical random access channel

[0092] PDSCH: Physical downlink shared channel, physical downlink shared channel

[0093] PDCCH: Physical downlink control channel, physical downlink control channel

[0094] UL-SCH: Uplink Shared Channel, uplink shared channel

[0095] DL-SCH: Downlink Shared Channel, uplink shared channel

[0096] C-RNTI: Cell Radio Network Temporary Identifier, cell radio network temporary identifier

[0097] P-RNTI: Paging RNTI, Paging Radio Network Temporary Identifier

[0098] RA-RNTI: Random Access RNTI, random access wireless network temporary identifier

[0099] CS-RNTI: Configured Scheduling RNTI, configured scheduling wireless network temporary identifier

[0100] SI-RNTI: System Information RNTI, System Information Radio Network Temporary Identifier

[0101] TC-RNTI: Temporary C-RNTI, temporary cell radio network temporary identifier

[0102] PO: paging occasion, paging opportunity

[0103] WUS: wake up signal

[0104] The following is a description of the technology associated with the present invention. Unless otherwise specified, the same terms in the embodiments and the related technology have the same meanings.

[0105] It is worth noting that the user, user equipment, and terminal referred to in this specification are synonymous. The term "UE" may also be used to refer to user equipment, and no specific distinction or limitation is made herein. Similarly, a network device is a device that communicates with a user equipment, including but not limited to base stations, gNBs, eNBs, wireless access points, wireless relays, and user equipment with relay capabilities. No specific distinction or limitation is made herein. A base station may be used herein as one form of network device implementation for illustration, and other forms of network equipment can be easily substituted in specific implementations.

[0106] In the NR network, when there is no data transmission, the user equipment (UE) also maintains a data connection with the network to achieve anytime online network services. For example, a user equipment in an idle or inactive state periodically detects whether the network has sent it a paging message. The user equipment periodically detects relevant paging information, even if the paging information does not indicate data transmission with the user equipment or the paging message sent is not related to the user equipment. Such behavior consumes more power of the user equipment, thereby affecting the battery life and reducing the user experience. When the network and user equipment support eDRX configuration, the network can configure a longer detection cycle. Within this cycle, the user equipment only needs to detect paging information according to the paging cycle within a time window, and does not need to detect paging information outside the window. This method can effectively reduce the power consumption of the user equipment, but because the user equipment only detects the paging signal within a small time window, it may cause a large delay, so that the network cannot establish a connection with the user in time when there is business.

[0107] One feasible approach is for the user equipment to use a low-power auxiliary receiver (LR) to detect the wake-up signal (WUS) sent by the base station. When there is no data transmission, the user equipment's main receiver (MR) remains in a dormant state to reduce the user equipment's power consumption. When data needs to be transmitted, the user equipment wakes up the MR according to the instructions in the WUS and performs the corresponding data processing. Since the WUS here is used for low-power receiver detection, it can also be referred to as LP-WUS (low-power WUS). Hereinafter, LP-WUS will be referred to as WUS and will not be explained separately. The WUS signal may contain relevant information required to wake up the user equipment, such as the user equipment ID, an indicator bit corresponding to the user equipment in the WUS signal, or a sequence corresponding to the user equipment detected in the WUS signal. The user equipment can determine whether the user equipment has been awakened by the WUS signal based on the indication. Only when the user equipment detects the wake-up indication information for the user equipment does it wake up the main receiver to perform relevant data transmission, such as detecting the paging PDCCH on the associated paging opportunity or transmitting the PRACH preamble within the corresponding window. In this way, the user equipment can maintain a connection with the network with minimal power consumption and reduce network response delays. When applying this method in a network, there are several issues that need to be addressed, such as which WUS signals the user equipment needs to detect among the multiple WUS signals sent by the base station, how to find the information corresponding to itself after detecting a WUS signal, and how to perform subsequent processing after receiving the relevant information. The present invention provides relevant methods for solving the above-mentioned problems. Through the mutual cooperation between the base station and the user equipment, the user equipment can achieve better power consumption savings.

[0108] The following examples are provided to describe the embodiments of the present invention in more detail.

[0109] [Example 1]

[0110] In an NR network, user equipment in the RRC_IDLE or RRC_INACTIVE states can enter a deep sleep state to conserve power when there is no service to process. Based on service requirements, the base station can use the WUS signal to wake up the user equipment. One feasible solution is for the network to configure several sets of WUS resources for the terminal to transmit WUS signals. These resources can be periodically repeated in the time domain, and the user equipment performs detection on these resources based on the network configuration. When configuring WUS resources, the network may use a centralized configuration approach, that is, configuring a resource set containing several WUS resources for multiple UEs. The network can map the WUS signals sent on the WUS resource set to one or more POs at specific locations. In addition, depending on different application scenarios, a single WUS resource may carry WUS information for multiple different user equipment at one or more POs. Therefore, for a user equipment to detect the relevant WUS information, it needs to determine the WUS resources to be detected in the resource set and the location or sequence number of its own information on the WUS resource. After detecting the WUS information, the user equipment may take related actions, such as waking up the main receiver and detecting the paging PDCCH and paging message on the associated PO.

[0111] The WUS information sent by the network may use different forms of indication methods, such as indication information in the form of sequence-based or bit message-based information. For example, when using indication information in the form of sequence, the network uses user-related parameters to generate a specific sequence and transmit it on the WUS resource. The sequences generated for different user devices may use the same or different time-frequency resources, so there may be multiple WUS signals that need to be detected in a resource set or on a resource. For example, the user equipment can use the relevant characteristics of the sequence to determine whether there is a sequence related to the device, thereby determining whether there is a wake-up message sent to itself. The WUS indication information may also be in the form of a bit message, for example, a number of indication information are combined into a bit stream, and then CRC check bits are added and channel coded, and then a certain modulation method is used to generate and send the WUS signal. The bits in these bit streams are sent to different user devices. Unless otherwise explicitly stated in the following text, these methods are applicable to the present invention.

[0112] Figure 1 is a schematic diagram illustrating an example of a specific resource configuration method. As shown in Figure 1, a WUS resource set includes six WUS resources using different time-frequency locations. Each WUS resource can transmit information containing several WUS indications. These WUSs can be referred to as a WUS set. The set of WUSs on a WUS resource can be referred to as a WUS set. The set of WUSs transmitted on all WUS resources in a WUS resource set can be referred to as a total WUS set. Each WUS indication can be represented by several bits or using a specific sequence. The UE determines the WUS information used to indicate the user terminal based on the sequence number of the WUS resource in the resource set and the sequence number of the WUS in the WUS set.

[0113] For the convenience of indication, all WUSs in a WUS resource set, that is, the WUSs in the total WUS set, can be sorted in order, for example, according to the order of the WUS set in the resource - WUS resources are arranged from low to high in the frequency domain - WUS resources are arranged from front to back in the time domain, and the serial numbers of all WUS indications in the resource set can be obtained.

[0114] To fully utilize resources, a WUS resource set can be associated with several POs. User devices associated with these POs determine the WUS resource locations to be detected and detect WUS indications on the WUS resource set. There are various ways to associate a WUS resource set with a PO, such as by determining the number of time slots between a reference point of a set of POs and a reference point of the WUS resource set, or by other methods, which are not specifically limited here.

[0115] The PO here can be an opportunity for the user to detect the paging PDCCH, or it can be an opportunity for the UE to detect a specific PDCCH related to the WUS feature. The following description mainly uses the paging PO and the paging PDCCH as examples, and the relevant methods and processes are also applicable to other PDCCHs used for WUS response.

[0116] A PO is typically shared by several UEs. If these UEs use the same WUS indication, when the base station sends a WUS to wake up a UE, it will also wake up other UEs sharing the same WUS. This will cause unnecessary wakeups of irrelevant UEs, reducing the power saving effect. Therefore, the network can further group UEs associated with a PO, and UEs in different groups correspond to different WUS indication information. This can minimize the wakeups of irrelevant UEs and improve system energy efficiency.

[0117] For example, the network can configure a group sequence number iUE for the UE through high-layer signaling, and the user determines the group information on the PO and the corresponding WUS indication message based on the sequence number iUE. When the network does not configure iUE for a UE through high-layer signaling, the UE can determine iUE based on the UE_ID and related paging and grouping parameters, for example, according to the following formula: iUE = floor (UE_ID / (N * Ns)) % Ng

[0118] When the network uses both higher-layer signaling to indicate the sequence number and the UE determines the sequence number based on the UE_ID, the user UE that uses the UE_ID to determine the sequence number can calculate it according to the following formula:

[0119] iUE = floor(UE_ID / (N*Ns)) % Ng_UEID + Ng - Ng_UEID (lower bits are reserved for the ID assigned by higher layers)

[0120] or

[0121] iUE = floor(UE_ID / (N*Ns))%Ng_UEID (using the high bits reserved for the ID assigned by the upper layer)

[0122] Where N is the number of paging frames in a paging cycle. % is a modulo operation. Ng_UEID is the number of packet sequence numbers reserved for use with higher-level indications configured by higher-level layers. Floor is a round-down operation. UE_ID is a parameter used to determine paging opportunities based on the user's TMSI or IMSI identifier. Ns is the number of POs corresponding to a PF configured by the network. Ng is the total number of user groups on a PO, that is, the total number of WUSs used by UEs associated with a PO. UEs in the network may also use other methods to obtain packet sequence numbers, which are not restricted here.

[0123] To facilitate the description of the relevant processes and methods in the present invention, some parameters are defined here for the method by which the UE obtains the correct detection resources. The specific symbols used for these parameters are only used to describe the relevant methods and processes, and other symbols may be used in actual systems.

[0124] Nx: The maximum number of WUSs that can be transmitted in each WUS resource, or the size of a WUS set.

[0125] Ny: The number of POs corresponding to each WUS resource. Optionally, Ny is a number in a predetermined set, for example, Ny is configured as one of the set {1, 1 / 2, 1 / 3, 1 / 4, 1 / 6, 1 / 8, 2, 3, 4, 6, 8}.

[0126] Npo: The number of POs associated with a WUS resource set. This means that the wakeup information used by UEs that detect these Npo consecutive POs is transmitted using the resources in the WUS resource set. For example, Npo is configured as one of the set {1, 2, 4, 8, 16, 32}.

[0127] Nft: The number of all WUS resources in a WUS resource set.

[0128] Nz: The total number of available WUSs in a WUS resource set. For example, if the WUS sets on each resource in the WUS resource set are the same size and there is no conflict with other signals, then Nz = Nft*Nx.

[0129] When determining these parameters, the UE may directly obtain them through high-layer parameter configuration. Furthermore, the network may not configure all of these parameters through high-layer signaling. Based on the correlation between these parameters, the UE can calculate the remaining parameters used in various embodiments of the present invention using the configured high-layer parameters. For example, the UE obtains Ny and Ng through high-layer parameter configuration, and can obtain the relevant Nx value through Nx = Ny * Ng. For another example, Npo can be the product of Nft and Ny, Nz can be the product of Nft and Nx, and so on.

[0130] We can use iPO to represent the sequence number of the PO of the UE in the paging cycle. For example, iPO can be determined according to the following formula: iPO = (UE_ID% N) * Ns + i_s or iPO = ((UE_ID% N) * Ns + i_s) % Npo

[0131] Where i_s is the serial number of the PO associated with the PF in the paging cycle. i_s = floor (UE_ID / N) % Ns

[0132] Where floor is a round-down operation, N is the number of paging frames in a paging cycle, and Ns is the number of POs in a paging frame.

[0133] FIG2 is a schematic flow chart showing an example of a method executed by a user equipment UE in embodiment 1. As shown in FIG2 , as an example, the method executed by the user equipment UE in embodiment 1 may include:

[0134] Step S201: The UE receives configuration parameters of wake-up signal WUS resources and paging parameters from the base station;

[0135] Step S202: The UE determines the sequence number Wus_index of the WUS that the UE needs to detect in the total set of WUSs transmitted by the WUS resource set according to the received configuration parameters of the WUS resources and the paging parameters.

[0136] Specifically, for example, the user equipment can determine the sequence number of the WUS that the user needs to detect in the total WUS set based on the configuration parameters of the WUS resource, UE_ID, and paging parameters. Optionally, the mapping of WUS resources and user subgroups in the network is performed based on the PO priority method, and the UE determines the sequence number of the WUS that the UE needs to detect in the total WUS set according to the following formula: Wus_index = (iPO*Ng+iUE)% (Npo*Ng)

[0137] Optionally, when the size of the total WUS set in the WUS resource set may be smaller than Npo*Ng, in order to avoid the obtained WUS sequence number exceeding the actual range, the following formula can be used to determine the WUS sequence number used by the UE: Wus_index = (iPO*Ng+iUE)%(min((Npo*Ng), Nz))

[0138] Among them, min is the smaller value operation, and % is the modulo operation.

[0139] Figure 3 is a diagram illustrating an example of the relationship between WUS resource sets and paging occasions (POs). As shown in Figure 3, a WUS resource set contains several WUS resources, and the WUS set size Nx for each WUS resource is 4. When using WUS indication, the group size Ng used by UEs at each PO is 4. Therefore, the four groups of UEs at the first PO use the four WUSs 0, 1, 2, and 3 on the first WUS resource, respectively. The four groups of UEs at the second PO use the four WUSs 4, 5, 6, and 7 on the second WUS resource, respectively.

[0140] Optionally, the mapping of WUS resources to user subgroups is performed based on the priority mapping between POs. The UE determines the sequence number of the WUS that the UE needs to detect in the WUS resource set and the WUS total set according to the following formula: Wus_index = (iUE*Ng+(iPO%Npo))%(Npo*Ng)

[0141] When iPO is modulo Npo, for example, iPO = ((UE_ID% N)*Ns+i_s)%Npo, it can be further simplified to Wus_index = (iUE*Ng+iPO)%(Npo*Ng)

[0142] Optionally, when the size of the total WUS set in the WUS resource set may be less than Npo*Ng, in order to avoid the obtained Wus sequence number exceeding the range, the following formula can be used to determine Wus_index = (iUE*Ng+(iPO%Npo))%min((Npo*Ng), Nz)

[0143] When iPO is modulo Npo, for example, iPO = ((UE_ID% N)*Ns+i_s)%Npo, it can be further simplified to Wus_index = (iUE*Ng+iPO)%min((Npo*Ng), Nz)

[0144] Among them, min is the smaller value operation, and % is the modulo operation.

[0145] Figure 4 is a diagram illustrating another example of the relationship between WUS resource sets and paging opportunity points (POs). For example, as shown in Figure 4, a WUS resource set contains several WUS resources, and the size Nx of the WUS set on each WUS resource is 4. If the Npo corresponding to the WUS resource set is 4, then the four first groups of UEs at the 1st, 2nd, 3rd, and 4th POs will use the four WUSs 0, 1, 2, and 3 on the first WUS resource, respectively. The second groups of UEs at the 1st, 2nd, 3rd, and 4th POs will use the four WUSs 4, 5, 6, and 7 on the second WUS resource, respectively.

[0146] When this approach is used, users with the same iUE at different POs can be mapped to the same WUS resource, bringing additional benefits to base station resource allocation. For example, when higher layers use iUE to represent different paging probability levels, UEs of the same type can be mapped to the same WUS resource, facilitating unified WUS signal transmission by the base station.

[0147] Optionally, when each WUS resource in the WUS resource set uses the same WUS set size Nx, the UE may further determine the sequence number igroup of the WUS resource in the resource set, and the sequence number isub (sequence number in the WUS set) used to indicate the UE indication value of the WUS resource. igroup = floor(Wus_index / Nx) isub = Wus_index%Nx

[0148] The usage sequence numbers here all start counting from 0 by default. If the WUS resource concentration starts counting from 1, 1 can be added to the corresponding sequence number.

[0149] For example, the UEs corresponding to WUS 0, 1, 2, and 3 in Figures 3 and 4 can determine the WUS resource sequence number as igroup 0 and isub 0, 1, 2, and 3 respectively. The UEs corresponding to WUS 4, 5, 6, and 7 can determine the WUS resource sequence number as igroup 1 and isub 0, 1, 2, and 3 respectively.

[0150] Optionally, the UE may also directly determine the resource number igroup of the detected WUS in the WUS resource set and the WUS number isub in the WUS set according to a certain method. For example, according to the following formula: igroup = iUE% Nft isub = [iPO% Npo] * B + floor (iUE / Nft)% B

[0151] Where B = Nx / Npo, and B should be an integer.

[0152] Or determine according to the following formula igroup = iUE%Nft isub = iPO%Npo + (floor(iUE / Nft)%B)*Npo

[0153] Alternatively, when Ny<=1, igroup=floor[(iUE%Ng) / Nx]+[iPO%Npo] / Ny isub=iUE%Nx can be determined according to the following formula:

[0154] In particular, when the Npo support in the system is 1, the formula can be simplified to igroup = floor[(iUE%Ng) / Nx] isub = iUE%Nx

[0155] Alternatively, when Ny>=1, igroup=floor((iPO%Npo) / Ny) isub=iUE%Ng+(iPO%(Nx / Ng))*Ng can be determined according to the following formula:

[0156] In addition, to cover different users in the cell, the WUS signal may be sent using beam scanning, resulting in multiple WUS signals sent using different spatial parameters, and these WUS signals transmit the same wake-up information. When the UE determines a set of WUS resource sets using different beams, it can use the same method to determine the WUS sequence number for the WUS resources using different beams. The process of the UE determining the relevant WUS on different WUS resource sets using different QCL reference signals will not be described here one by one.

[0157] [Example 2]

[0158] It should be noted that because WUS resource sets repeat periodically in the time domain, in certain configuration scenarios, all or part of the resources in a WUS resource set at a given time may conflict with other channels or signals. For example, if a resource in a WUS resource set partially or completely overlaps with SSB, appropriate processing is required to ensure service reliability.

[0159] When the WUS resource set configured by the network overlaps in the time domain, some resources in the resource set may conflict with other signals in the network in some periods. For example, some WUS resources may overlap with all or part of the time-frequency resources used by SSB. These resources can be considered unavailable. In this case, the UE can use the remaining available resources to determine the relevant parameters for detecting WUS signals. To simplify the explanation, we can define some parameters:

[0160] Nft_a: The number of available WUS resources in the WUS resource set in a certain period.

[0161] Nz_a: The total number of available WUSs in a WUS resource set, that is, the size of the total available set. For example, if the WUS set size on each resource in the WUS resource set is the same, then Nz_a = Nft_a * Nx.

[0162] The user equipment can determine the corresponding resource number and other information of the WUS that the user needs to detect in the resource set based on the configuration parameters of the WUS resource, UE_ID and paging parameters. Optionally, the mapping of WUS resources and user subgroups in the network is performed based on the priority within the PO. The UE determines the sequence number of the WUS that the UE needs to detect in the total set of available WUS in the WUS resource set according to the following formula: Wus_index = (iPO*Ng+iUE)% (Npo*Ng)

[0163] Optionally, when the size of the total available WUS set in the WUS resource set may be less than Npo*Ng, in order to avoid the obtained WUS number exceeding the actual range, the following formula can be used to determine the WUS number used by the UE: Wus_index = (iPO*Ng+iUE)%(min((Npo*Ng), Nz_a))

[0164] Among them, min is the smaller value operation, and % is the modulo operation.

[0165] Optionally, the mapping of WUS resources to user subgroups is performed based on the priority mapping between POs. The UE determines the WUS index value of the WUS that the UE needs to detect in the WUS resource set according to the following formula: Wus_index = (iUE*Ng+(iPO%Npo))%(Npo*Ng)

[0166] Optionally, when the size of the total available WUS set in the WUS resource set may be less than Npo*Ng, in order to avoid the obtained Wus sequence number from exceeding the range, the following formula can be used to determine Wus_index = (iUE*Ng+(iPO%Npo))%min((Npo*Ng), Nz_a)

[0167] Among them, min is the smaller value operation, and % is the modulo operation.

[0168] When iPO is modulo Npo, for example, iPO = ((UE_ID% N)*Ns+i_s)%Npo, the above two equations can be further simplified to Wus_index = (iUE*Ng+iPO)%(Npo*Ng), and Wus_index = (iUE*Ng+iPO)%min((Npo*Ng), Nz_a).

[0169] Optionally, when each WUS resource in the WUS resource set uses the same WUS set size Nx, the UE may further determine the sequence number igroup_a of the WUS resource in all available resource sets, and the sequence number isub (sequence number in the WUS set) used to indicate the UE indication value of the WUS resource. igroup_a = floor(Wus_index / Nx) isub = Wus_index%Nx

[0170] The sequence numbers here all start counting from 0. If the WUS resource concentration uses a counting method starting from 1, 1 can be added to the corresponding sequence number.

[0171] Optionally, to cover different users in a cell, the WUS signal may be sent using beam scanning. This results in multiple WUS signals being sent using different spatial parameters, each of which carries the same wake-up information. When the UE determines a set of WUS resource sets using different beams, it uses the same method to determine the resource sequence number. The process of the UE determining the relevant WUS on different WUS resource sets using different QCL reference signals is not described here.

[0172] [Example 3]

[0173] After the user equipment determines the relevant parameters of the WUS signal to be detected according to the method in the embodiment of the present invention, the UE can use the corresponding parameters to perform detection. When the WUS uses different methods to transmit valid information, the UE may perform different processing based on the detected information.

[0174] For example, when using a bitmap, one bit may be used to indicate each WUS information in the WUS set, and these bits are sequentially arranged to form a bitmap of WUS information. When the UE detects that the bit corresponding to the UE is 1, the UE performs a test at the corresponding PO of the WUS resource set. Otherwise, the UE does not need to perform a test at the corresponding PO of the WUS resource set.

[0175] Optionally, N bits are used to indicate each WUS information in the WUS set, and the UE determines to detect at the PO of M consecutive paging cycles based on a predefined action and the value indicated by the N bits. For example, using a 2-bit indication, 00 indicates that the UE does not need to detect at the PO of the paging cycle corresponding to the WUS resource set, and 01 / 10 / 11 indicates that the UE detects at the PO of 1 / 2 / 3 consecutive paging cycles starting from the paging cycle corresponding to the WUS resource set, respectively.

[0176] When WUS is indicated using bit coding or sequence, more than Nx sequence numbers or code values ​​may be used to indicate the WUS information of more than one group of UEs, as shown in Table 1 for example. Assuming Nx=4, isub can take 0 / 12 / 3 to indicate different UE groups. According to Table 1, 5 sequences / codes can be used on the WUS resource to indicate different information, where sequence / code 0 / 1 / 2 / 3 respectively corresponds to the wake-up information of UEs using different group sequence numbers, corresponding to sequence numbers isub 0 / 1 / 2 / 3 in the WUS set respectively. Sequence 4 is used to indicate the wake-up information of all UEs that apply the WUS resource, that is, sequence 4 corresponds to all groups containing isub of 0 / 1 / 2 / 3, which can be called a group combination indication.

[0177] Table 1:

[0178] Of course, in addition to the examples in Table 1, there may be other combinations of group combination indications, such as a combination of all groups whose isub is an odd number, a combination of all groups whose isub is an even number, and so on.

[0179] Optionally, the UE uses the first type of indication method to determine whether it is necessary to wake up the main receiver to perform corresponding actions. When the UE detects the sequence / code corresponding to isub or the sequence / code corresponding to the group combination on the determined WUS resource, and this group combination contains the group corresponding to isub, the UE wakes up the main receiver and performs PO detection on the PO on the paging cycle corresponding to the WUS resource set. Using this method, the UE wakes up when it detects relevant wake-up information, and remains asleep if it does not detect it, which can effectively reduce the power consumption of the UE. At the same time, the network does not need to send a signal when it does not need to wake up the UE, which can also reduce the power consumption of the base station.

[0180] Optionally, the UE uses the second type of indication to determine whether it is necessary to wake up the main receiver to perform corresponding actions. The UE detects the sequence / code corresponding to isub or the sequence / code corresponding to the group combination on the determined WUS resource, and this group combination contains the group corresponding to isub. The UE determines that it does not need to perform PO detection on the PO corresponding to the paging cycle of the WUS resource set. When the UE does not detect the sequence corresponding to isub or the sequence used to indicate multiple isubs on the resource set and contains the isub on K consecutive WUS detection opportunities, the UE wakes up the main receiver for PO detection, and the PO can be the first PO after the UE wakes up. In this way, when the UE detects relevant wake-up information, it remains in sleep mode; when no detection is made, the UE is woken up and relevant detection is performed. Applying this method can effectively avoid the performance degradation problem caused by the UE's failure to receive the network wake-up information in time due to channel transmission.

[0181] 5 is used to illustrate a user equipment as an embodiment that can execute the method executed by the user equipment described in detail above in the present invention.

[0182] FIG5 is a block diagram showing a user equipment UE according to the present invention.

[0183] As shown in Figure 5, the user equipment UE 500 includes a processor 501 and a memory 502. The processor 501 may include, for example, a microprocessor, a microcontroller, an embedded processor, etc. The memory 502 may include, for example, a volatile memory (such as a random access memory (RAM), a hard disk drive (HDD), a non-volatile memory (such as a flash memory), or other memory. The memory 502 stores program instructions. When executed by the processor 501, these instructions may execute the above-described method performed by the user equipment as described in detail in the present invention.

[0184] The method of the present invention and the related devices have been described above in conjunction with the preferred embodiments. Those skilled in the art will understand that the method shown above is only exemplary, and the various embodiments described above can be combined with each other when no contradiction occurs. The method of the present invention is not limited to the steps and sequence shown above. The network node and user equipment shown above may include more modules, for example, modules that can be developed or developed in the future and can be used for base stations, MMEs, or UEs, etc. The various identifiers shown above are only exemplary and not restrictive, and the present invention is not limited to the specific information elements used as examples of these identifiers. Those skilled in the art can make many changes and modifications based on the teachings of the illustrated embodiments.

[0185] It should be understood that the above embodiments of the present invention can be implemented through software, hardware, or a combination of software and hardware. For example, the various components within the base station and user equipment in the above embodiments can be implemented through a variety of devices, including but not limited to analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processors, application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), programmable logic devices (CPLDs), and the like.

[0186] In this application, "base station" refers to a mobile communication data and control switching center with high transmission power and wide coverage area, including functions such as resource allocation and scheduling, data reception and transmission. "User equipment" refers to user mobile user equipment, such as mobile phones and laptops, that can communicate wirelessly with a base station or micro base station.

[0187] In addition, the embodiments of the present invention disclosed herein can be implemented on a computer program product. More specifically, the computer program product is a product as follows: having a computer-readable medium, on which computer program logic is encoded, and when executed on a computing device, the computer program logic provides relevant operations to implement the above-mentioned technical solutions of the present invention. When executed on at least one processor of a computing system, the computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention. This arrangement of the present invention is typically provided as software, code and / or other data structures arranged or encoded on a computer-readable medium such as an optical medium (e.g., CD-ROM), a floppy disk or a hard disk, or other media such as firmware or microcode on one or more ROM or RAM or PROM chips, or downloadable software images, shared databases, etc. in one or more modules. Software or firmware or this configuration can be installed on a computing device so that one or more processors in the computing device execute the technical solutions described in the embodiments of the present invention.

[0188] In addition, each functional module or each feature of the base station device and user equipment used in each of the above embodiments can be implemented or executed by a circuit, which is typically one or more integrated circuits. The circuits designed to perform the various functions described in this specification may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC) or a general-purpose integrated circuit, a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, or a discrete hardware component, or any combination of the above devices. The general-purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller or state machine. The general-purpose processor or each circuit may be configured by a digital circuit, or may be configured by a logic circuit. In addition, when, due to advances in semiconductor technology, advanced technologies that can replace current integrated circuits emerge, the present invention may also use integrated circuits obtained using the advanced technology.

[0189] Although the present invention has been described above in conjunction with the preferred embodiments of the present invention, it will be understood by those skilled in the art that various modifications, substitutions, and changes may be made to the present invention without departing from the spirit and scope of the present invention. Therefore, the present invention should not be limited by the above-described embodiments, but should be limited by the appended claims and their equivalents.

Claims

1. A method performed by a user equipment UE, comprising: The UE receives configuration parameters of wake-up signal WUS resources and paging parameters from the base station; and The UE determines the sequence number Wus_index of the WUS that the UE needs to detect in the total set of WUSs transmitted by the WUS resource set according to iPO as the first parameter, Ng as the second parameter, iUE as the third parameter, and Npo as the fourth parameter, wherein: iPO: indicates the sequence number of the UE's paging opportunity PO in the paging cycle; Ng: the total number of WUS used by UEs associated with a PO; iUE: the group number used by the UE, according to which the group information on the PO is determined; Npo: The number of POs associated with a WUS resource set.

2. The method according to claim 1, wherein: In the case where the mapping of WUS resources to user subgroups in the network is performed based on the priority within the PO, The Wus_index is determined by the following formula 1: Wus_index=(iPO*Ng+iUE)%(Npo*Ng) (Formula 1), in, %: modulo operation.

3. The method performed by the user equipment UE according to claim 2, wherein: In the case where the size of the total WUS set transmitted by the WUS resource set may be smaller than Npo*Ng, The Wus_index is determined by the following formula 2: Wus_index=(iPO*Ng+iUE)%(min((Npo*Ng),Nz)) (Formula 2), in, min: to take the smaller value; Nz: The size of the total WUS set transmitted by a WUS resource set.

4. The method according to claim 1, wherein: When the mapping between WUS resources and user subgroups is performed based on the priority mapping between POs, The Wus_index is determined by the following formula 3: Wus_index=(iUE*Ng+(iPO%Npo))%(Npo*Ng) (Formula 3), in, %: modulo operation.

5. The method performed by the user equipment UE according to claim 4, wherein: In the case where the size of the total WUS set transmitted by the WUS resource set may be smaller than Npo*Ng, The Wus_index is determined by the following formula 4: Wus_index=(iUE*Ng+(iPO%Npo))%min((Npo*Ng),Nz) (Formula 4), in, min: to take the smaller value; Nz: The size of the total WUS set transmitted by a WUS resource set.

6. The method performed by a user equipment UE according to any one of claims 1 to 5, wherein: When each WUS resource in a WUS resource set uses the same WUS set size Nx, The UE further determines the sequence number igroup of the WUS resource in the resource set by the following formula 5, and / or further determines the sequence number isub of the WUS resource used to indicate the UE indication value by the following formula 6, igroup=floor(Wus_index / Nx) (Formula 5) isub=Wus_index%Nx (Formula 6), in, Nx: the number of WUSs that can be transmitted in each WUS resource, or the size of a WUS set.

7. The method performed by the user equipment UE according to claim 2, wherein: When some resources in the WUS resource set configured in the network are unavailable, The Wus_index is determined by the following formula 7: Wus_index=(iPO*Ng+iUE)%(min((Npo*Ng), Nz_a)) (Formula 7), in, min: to take the smaller value; %: modulus operation; Nz_a: the total number of available WUS in a WUS resource set, in, The WUS set size on each resource in the WUS resource set is the same, Nz_a = Nft_a*Nx, Nft_a: the number of available WUS resources in the WUS resource set in a certain period, Nx: the maximum number of WUSs that can be transmitted in each WUS resource, or the size of a WUS set.

8. The method performed by the user equipment UE according to claim 4, wherein: When some resources in the WUS resource set configured in the network are unavailable, The Wus_index is determined by the following formula 8: Wus_index=(iUE*Ng+(iPO%Npo))%min((Npo*Ng), Nz_a) (Formula 8), in, min: to take the smaller value; %: modulus operation; Nz_a: the total number of available WUS in a WUS resource set, in, The WUS set size on each resource in the WUS resource set is the same, Nz_a = Nft_a*Nx, Nft_a: the number of available WUS resources in the WUS resource set in a certain period, Nx: the maximum number of WUSs that can be transmitted in each WUS resource, or the size of a WUS set.

9. The method performed by a user equipment UE according to any one of claims 1 to 5, wherein: When a bitmap is used in WUS for indication, the UE determines whether to perform detection in the PO corresponding to the WUS resource set based on information indicated by one or more bits.

10. A user equipment, comprising: processor; as well as Memory, which stores instructions, Wherein, when the instructions are executed by the processor, the method according to any one of claims 1 to 9 is performed.

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