Wakeup signal configuration method and apparatus

Abstract

Embodiments of the present application provide a wakeup signal configuration method and apparatus. The method comprises: after determining an updated wakeup signal (WUS) configuration, a first cell sending first WUS configuration information to a second cell, the first WUS configuration information comprising the updated WUS configuration, wherein the first cell is a cell supporting or using on-demand system information block type 1 (on-demand SIB1), and the second cell is a cell assisting an on-demand SIB1 procedure of the first cell. According to the embodiments of the present application, it is possible to avoid the problem of being unable to obtain the on-demand SIB1 of the first cell due to inconsistent WUS configuration, and the method is simple and easy to implement.

Description

Method and apparatus for configuring wake-up signal TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of communication technology. BACKGROUND

[0002] Since the NR (New Radio) base station needs to work in a large bandwidth (such as 100MHz), a large number of ports (64T / 64R) need to be used, and the TTI (Transmission Time Interval) is shorter (1ms), the energy consumption of the NR base station in baseband processing, digital front end and other functions is significantly higher than that of the LTE (Long Term Evolution) base station. According to the data statistics of the operator, the average energy consumption of an NR base station is more than three times that of an LTE base station. In the cost of deploying a 5G (Fifth Generation) network, nearly 50% of the cost is the electricity cost. More importantly, even in the time period without service, the energy consumption of the NR base station is still very large, because even in the time period without service, the base station still needs to send common signals such as SSB (SS / PBCH block, Synchronization Signal and PBCH block), SIB1 (system information block type 1) and SI (system information), etc., thereby greatly reducing the energy use efficiency of the NR base station. Energy saving of the NR network is a problem to be solved.

[0003] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely describing the technical solutions of the present application, and for the convenience of understanding by those skilled in the art. The above technical solutions cannot be considered as known to those skilled in the art only because they are described in the background section of the present application.

[0004] SUMMARY

[0005] The inventors found that in 3GPP Release 19, the research process and signaling method are used to support on-demand SIB1 for UEs (user equipment) in idle / inactive mode, including: a method of triggering on-demand SIB1 by using an uplink wake-up signal of an existing signal / channel; providing a configuration of a wake-up signal to a UE; and exchanging information about at least the configuration of the wake-up signal between gNBs (network devices).

[0006] In 3GPP Release 19, once a terminal device camps on an NES (network energy saving) cell, the SI modification procedure is used to provide an updated WUS (wakeup signal) configuration to the UE (assuming that the WUS configuration is included in the SIBy of the NES cell), and Cell A can also broadcast the NES cell related WUS configuration information in its SIB (for example, SIBx), so the updated WUS configuration should also be provided to Cell A, however, it is not clear whether Cell A will broadcast the updated WUS configuration immediately.

[0007] In addition, if the time gap between the NES cell applying the updated WUS configuration and Cell A broadcasting the updated WUS configuration is large, the WUS configuration obtained by the UE in Cell A from the SIBx of Cell A can be different from the WUS configuration applied by the NES cell. That is, if the UE in Cell A has obtained the updated WUS configuration and uses the updated WUS configuration to send the WUS and / or receive the RAR (Random Access Response) and on-demand SIB1 to the NES cell, while the NES cell still uses the un-updated WUS configuration to receive the WUS and / or send the RAR and on-demand SIB1 due to not reaching the next modification period, or the UE in Cell A has not obtained the updated WUS configuration and uses the un-updated WUS configuration to send the WUS and / or receive the RAR and on-demand SIB1 to the NES cell, while the NES cell has used the updated WUS configuration to receive the WUS and / or send the RAR and on-demand SIB1, the NES cell can not correctly receive the WUS or the UE can not correctly receive the RAR and on-demand SIB1.

[0008] To solve at least one of the above problems or other similar problems, embodiments of the present application provide a method and a device for configuring a WUS (wakeup signal), which can help the terminal device in Cell A to obtain the WUS configuration from Cell A to be consistent with the WUS configuration in the NES cell, thereby avoiding the problems of the network device failing to receive the WUS and the terminal device failing to obtain the on-demand SIB1 of the NES cell due to inconsistent WUS configurations, and the method is simple and easy to implement.

[0009] According to an aspect of an embodiment of the present application, a device for configuring a WUS (wakeup signal) is provided, configured in a network device belonging to a first cell, and the device comprises:

[0010] a sending unit configured to send, to a second cell, first wake-up signal (WUS) configuration information including an updated WUS configuration after determining the updated WUS configuration;

[0011] The first cell is a cell supporting or using on-demand system information block type 1 (on-demand SIB1), and the second cell is a cell assisting the on-demand SIB1 procedure of the first cell.

[0012] According to another aspect of the embodiments of the present application, an apparatus for acquiring on-demand system information is provided, configured to a terminal device, and the apparatus comprises:

[0013] a sending unit configured to send, to a second cell, first wake-up signal (WUS) configuration information including an updated WUS configuration after determining the updated WUS configuration;

[0014] The first cell is a cell supporting or using on-demand system information block type 1 (on-demand SIB1).

[0015] According to another aspect of the embodiments of the present application, an apparatus for acquiring on-demand system information is provided, configured to a terminal device, and the apparatus comprises:

[0016] a sending unit configured to send, to a second cell, first wake-up signal (WUS) configuration information including an updated WUS configuration after determining the updated WUS configuration;

[0017] The first cell is a cell supporting or using on-demand system information block type 1 (on-demand SIB1).

[0018] According to another aspect of the embodiments of the present application, an apparatus for acquiring on-demand system information is provided, configured to a terminal device, and the apparatus comprises:

[0019] The receiving unit receives a first MAC CE indicating an on-demand SSB transmission indication, the first MAC CE including at least one secondary cell index (SCell index) field and at least one on-demand SSB configuration (ON-SSB configuration) field; the secondary cell index field indicates an index of a secondary cell, and the on-demand SSB configuration field indicates an on-demand SSB configuration of at least one secondary cell.

[0020] One of the beneficial effects of the embodiments of the present application is that, according to the embodiments of the present application, the WUS configuration obtained by the terminal device in the second cell from the second cell is consistent with the WUS configuration in the first cell, avoiding the problems of network device failure to receive WUS and terminal device failure to obtain on-demand SIB1 in the first cell due to inconsistent WUS configurations, and the method is simple and easy to implement.

[0021] Specific embodiments of the application are disclosed herein, and represented in the accompanying drawings, illustrating the principles of the application in a manner that can be employed by those skilled in the art. It is understood that the embodiments of the application are not limited in scope to the specific embodiments described herein. Embodiments of the application include many alterations, modifications and equivalents that are within the spirit and scope of the appended claims.

[0022] Features described and / or illustrated with respect to one implementation can be used in one or more other implementations in the same or similar manner, in combination with or in place of the features in the other implementations.

[0023] It should be emphasized that the term "comprises / comprising" when used in this specification is taken to mean the presence of stated features, integers, steps or components but not the exclusion of one or more other features, integers, steps, components or groups thereof. BRIEF DESCRIPTION OF DRAWINGS

[0024] Elements and features depicted in one drawing or embodiment of the application can be combined with elements and features depicted in one or more other drawings or embodiments in any manner.

[0025] FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

[0026] FIG. 2 is a schematic diagram of a cell A broadcasting an updated WUS configuration;

[0027] FIG. 3 is a schematic diagram of an SI modification procedure in a NES cell;

[0028] FIG. 4 is a schematic diagram of a configuration method of a wake-up signal according to an embodiment of the present application;

[0029] FIG. 5 is a schematic diagram of an example of the configuration method of the wake-up signal according to an embodiment of the present application;

[0030] FIG. 6 is another schematic diagram of an example of the configuration method of the wake-up signal according to an embodiment of the present application;

[0031] FIG. 7 is still another schematic diagram of an example of the configuration method of the wake-up signal according to an embodiment of the present application;

[0032] FIG. 8 is still another schematic diagram of an example of the configuration method of the wake-up signal according to an embodiment of the present application;

[0033] FIG. 9 is a schematic diagram of an acquisition method of on-demand system information according to an embodiment of the present application;

[0034] FIG. 10 is a schematic diagram of an example of the acquisition method of on-demand system information according to an embodiment of the present application;

[0035] FIG. 11 is a schematic diagram of a cell selection method according to an embodiment of the present application;

[0036] FIG. 12 is a schematic diagram of a transmission method of an on-demand SSB transmission indication according to an embodiment of the present application;

[0037] FIG. 13 is a schematic diagram of a format of the first MAC CE when the first MAC CE is of a fixed length according to an embodiment of the present application;

[0038] FIG. 14 is a schematic diagram of a format of the first MAC CE when the first MAC CE is of a variable length according to an embodiment of the present application;

[0039] FIG. 15 is a schematic diagram of a configuration apparatus of a wake-up signal according to an embodiment of the present application;

[0040] FIG. 16 is a schematic diagram of an acquisition apparatus of on-demand system information according to an embodiment of the present application;

[0041] FIG. 17 is a schematic diagram of a cell selection apparatus according to an embodiment of the present application;

[0042] FIG. 18 is a schematic diagram of a transmission apparatus of an on-demand SSB transmission indication according to an embodiment of the present application;

[0043] FIG. 19 is a schematic diagram of a terminal device according to an embodiment of the present application;

[0044] FIG. 20 is a schematic diagram of a network device according to an embodiment of the present application. DETAILED DESCRIPTION

[0045] The foregoing and other features of the present application will become apparent to those skilled in the art upon consideration of the following description of specific embodiments of the application, taken in conjunction with the accompanying drawings. In the description of embodiments of the application, specific terminology is employed for the sake of clarity. However, the application is not intended to be limited to the specific terminology so selected. A person skilled in the art will recognize that the principles of the application can be employed in any device that employs principles of the application.

[0046] In the embodiments of the present application, the terms "first", "second", etc. are used to distinguish different elements from the point of view, but do not indicate the spatial arrangement or time sequence of the elements, and the elements should not be limited by these terms. The term "and / or" includes any one and all combinations of the associated listed terms. The terms "include", "comprise", "have" and the like mean the presence of the stated features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.

[0047] In the embodiments of the present application, the singular form "one", "the" and the like includes the plural form, should be understood broadly as "one kind" or "a kind of", and not limited to the meaning of "one"; in addition, the term "said" should be understood as including both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least partially according to", and the term "based on" should be understood as "at least partially based on", unless the context clearly indicates otherwise.

[0048] In the embodiments of the present application, the term "communication network" or "wireless communication network" can refer to a network that complies with any communication standard, such as Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), Wideband Code Division Multiple Access (WCDMA), High-Speed Packet Access (HSPA), etc.

[0049] In addition, communication between devices in a communication system can be carried out according to any phase communication protocol, which can include but is not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G, 5G, New Radio (NR), and 6G, etc., and / or other currently known or to be developed in the future communication protocols.

[0050] In embodiments of the present application, the term "network device" refers to, for example, a device that accesses a terminal device to a communication network and provides services for the terminal device in a communication system. The network device can include, but is not limited to, the following devices: base station (BS), access point (AP), transmission reception point (TRP), broadcast transmitter, mobile management entity (MME), gateway, server, radio network controller (RNC), base station controller (BSC), and the like.

[0051] The base station can include, but is not limited to, the following devices: node B (NodeB or NB), evolved node B (eNodeB or eNB), 5G base station (gNB), and 6G base station, etc., and can also include remote radio head (RRH), remote radio unit (RRU), relay, or low-power node (such as femto, pico, etc.), IAB (Integrated Access and Backhaul) node or IAB-DU or IAB-donor. And the term "base station" can include some or all functions of them, and each base station can provide communication coverage for a specific geographic area. The term "cell" can refer to a base station and / or its coverage area, depending on the context in which the term is used. The terms "cell" and "base station" can be used interchangeably without causing confusion.

[0052] In embodiments of the present application, the term "user equipment" (UE) or "terminal equipment" (TE) refers to, for example, a device that accesses a communication network through a network device and receives network services. The terminal equipment can be fixed or mobile, and can also be referred to as a mobile station (MS), a terminal, a subscriber station (SS), an access terminal (AT), an IAB-MT (Mobile Terminal), a station, etc.

[0053] The terminal device can include, but is not limited to, the following devices: a cellular phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a machine type communication device, a laptop computer, a cordless phone, a smartphone, a smartwatch, a digital camera, a wearable device, a game device, an XR device, and the like.

[0054] For another example, in scenarios such as the Internet of Things (IoT), the terminal device can also be a machine or device that performs monitoring or measurement, which can include, but is not limited to, the following: a machine type communication (MTC) terminal, a vehicle-mounted communication terminal, a device-to-device (D2D) terminal, a machine-to-machine (M2M) terminal, a terminal supporting XR services, and the like.

[0055] In addition, the term "network side" or "network device side" refers to the side of the network, which can be a certain base station or can include one or more network devices as described above. The term "user side" or "terminal side" or "terminal device side" refers to the side of the user or terminal, which can be a certain UE or can include one or more terminal devices as described above. In this article, "device" can refer to a network device or a terminal device unless otherwise specified.

[0056] The following describes the scenarios of the embodiments of the present application by way of examples, but the present application is not limited thereto.

[0057] FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present application, which schematically illustrates the case of taking a terminal device and a network device as examples. As shown in FIG. 1, the communication system 100 can include a network device 101, terminal devices 102 and 103. For simplicity, FIG. 1 only takes two terminal devices and one network device as examples for illustration, but the embodiments of the present application are not limited thereto.

[0058] In the embodiments of the present application, the network device 101 and the terminal devices 102 and 103 can perform existing services or future implementable services transmission. For example, these services can include, but are not limited to, the following: enhanced mobile broadband (eMBB), massive machine type communication (mMTC), and ultra-reliable and low-latency communication (URLLC), and the like.

[0059] It is worth noting that FIG. 1 shows that the terminal devices 102, 103 are in the coverage of the network device 101, but the present application is not limited thereto. The terminal devices 102, 103 can not be in the coverage of the network device 101.

[0060] In the embodiments of the present application, the network device 101 can be, for example, a gNB, or an entity of a core network (such as a Location Management Function (LMF) or an Access and Mobility Management Function (AMF), or an entity of a higher layer network (such as an Operation Administration and Maintenance (OAM), or an Over the top server (OTT-server), or can also be a partial function or entity of any of the above devices.

[0061] In the 3GPP Release 19 specification, for the research process and signaling method to support on-demand SIB1 for UEs in idle / inactive mode, the following is described:

[0062] For on-demand SIB1, 3GPP has the following description:

[0063] For SIB1 acquisition, the following is described:

[0064] For WUS configuration, the following is described:

[0065] For details of case 2 of the research, the following is described:

[0066] FIG. 2 is a schematic diagram of an on-demand SIB1 scenario, as shown in FIG. 2, the cell A sends a WUS configuration to the terminal device, and indicates that the WUS configuration is for which NES cell, the terminal device receives the WUS configuration and sends a WUS to the corresponding NES cell, and acquires an on-demand SIB1 from the NES cell.

[0067] Figure 3 is a schematic diagram of SI modification procedure in NES cell. As shown in Figure 3, in NES cell, according to SI modification procedure, in modification period n, the NES cell sends system information modification indication to terminal device, and from next modification period (modification period n+1), the updated WUS configuration (included in SIBY) is broadcasted. The update of WUS configuration (SIBx) in Cell A should also follow the modification procedure shown in Figure 3, that is, the updated WUS configuration in Cell A is broadcasted from the next modification period of Cell A. However, as mentioned before, if the time gap between the NES cell applying the updated WUS configuration and Cell A broadcasting the updated WUS configuration is large, the WUS configuration obtained by the UE in Cell A from SIBx in Cell A can be different from the WUS configuration applied by the NES cell, resulting in that the NES cell cannot correctly receive the WUS or the UE cannot correctly receive the RAR and on-demand SIB1.

[0068] The present application is proposed to solve the above problems. The embodiments of the present application will be described below in conjunction with the drawings and specific embodiments.

[0069] In the following description, without causing confusion,

[0070] The first cell (NES cell) is a cell supporting or using on-demand SIB1, which can send SIB1 according to receiving uplink WUS from UE, and it can also be referred to as energy saving cell (NES) or power saving cell or special cell or cell sending simplified signal, etc.

[0071] The second cell (Cell A) periodically sends at least its own SIB1, which can also be referred to as auxiliary cell or anchor cell, used to assist the on-demand SIB1 procedure of NES cell; in addition, the second cell can also be another NES cell, which can provide WUS configuration information for the first cell.

[0072] Residing in a cell can also be expressed as normally residing in the cell, or temporarily residing in the cell, or selecting to the cell, or reselecting to the cell, or considering the cell as suitable cell, or considering the cell as acceptable cell, etc.

[0073] The system information modification indication is sent by a short message in the existing standard, for example, a 1-bit information indicating system information modification is included in the short message, the short message is sent by paging, and can also be described as a short DCI or a paging early indication (PEI) or the like.

[0074] “if” can be replaced by “in the case of” or “when”; “modification period” and “period” can be interchangeable; “send” and “broadcast” can be interchangeable; “SI message” and “SI” can be interchangeable.

[0075] Embodiments of the first aspect

[0076] The embodiments of the present application provide a configuration method of a wake-up signal, which is described from the side of a first cell.

[0077] FIG. 4 is a schematic diagram of the configuration method of the wake-up signal according to the embodiments of the present application, as shown in FIG. 4, the method comprises:

[0078] 401: After determining an updated wake-up signal (WUS) configuration, the first cell sends first WUS configuration information to a second cell, wherein the first WUS configuration information comprises the updated WUS configuration.

[0079] The first cell is a cell supporting or using on-demand system information block type 1 (on-demand SIB1), and the second cell is a cell assisting the on-demand SIB1 process of the first cell.

[0080] In the embodiments of the present application, the behavior of the first cell can also be the action of the network device to which the first cell belongs, and similarly, the behavior of the second cell can also be the action of the network device to which the second cell belongs, for example, the first cell sending the first WUS configuration information to the second cell can also be the network device to which the first cell belongs sending the first WUS configuration information to the network device to which the second cell belongs, for example, sending through an Xn interface or an F1 interface.

[0081] It is worth noting that the above FIG. 4 only schematically describes the embodiments of the present application, but the present application is not limited thereto. For example, some other operations can be added or some operations therein can be reduced. Those skilled in the art can make appropriate modifications according to the above content, and the present application is not limited to the description of the above FIG. 4.

[0082] According to the embodiment of the present application, the first cell supporting or using the on-demand SIB1 can send the first WUS configuration information including the updated WUS configuration to the second cell assisting the on-demand SIB1 process of the first cell after determining the updated WUS configuration, which helps the WUS configuration acquired by the terminal device in the second cell from the second cell to keep consistent with the WUS configuration in the first cell, avoids the problem that the network device cannot receive the WUS and the terminal device cannot acquire the on-demand SIB1 of the first cell due to the inconsistent WUS configuration, and the method is simple and easy to implement.

[0083] In the embodiment of the present application, for the convenience of description, the WUS configuration information sent by the first cell to the second cell is referred to as the first WUS configuration information, the WUS configuration information related to the first cell sent by the second cell to the terminal device served thereby is referred to as the second WUS configuration information, and the WUS configuration information sent by the first cell to the terminal device served thereby is referred to as the third WUS configuration information. The above three kinds of WUS configuration information all include the updated WUS configuration related to the first cell, and the contents contained in the three kinds of configuration information can be the same or different.

[0084] In 401, in some embodiments, the first WUS configuration information includes the effective time of the updated WUS configuration, and the second cell sends the second WUS configuration information including the updated WUS configuration to the terminal device served thereby according to the effective time.

[0085] FIG. 5 is a schematic diagram of one example of a WUS configuration method according to an embodiment of the present application.

[0086] As shown in FIG. 5, the NES cell (the first cell) updates the WUS configuration, and the time and content of the WUS configuration update can be determined by the NES cell itself. The NES cell sends the first WUS configuration information to the cell A (the second cell), which includes the updated WUS configuration of the NES cell and the effective time of the updated WUS configuration. The cell A sends the system information modification indication (SI change indication) to the second terminal device, i.e., the terminal device served by the cell A, according to the first WUS configuration information. At this time, the cell A does not send the updated WUS configuration to the second terminal device. When the effective time of the updated WUS configuration arrives, the cell A sends the second WUS configuration information to the second terminal device according to the updated WUS configuration in the first WUS configuration information, wherein the second WUS configuration information includes the updated WUS configuration, and the second WUS configuration information can be sent through the system information block (SIBx).

[0087] In some embodiments, the effective time is related to a time point at which the first cell sends third WUS configuration information to the terminal device served by the first cell, and the third WUS configuration information includes the updated WUS configuration.

[0088] As shown in FIG. 5, after updating the WUS configuration, the NES cell sends a system information modification indication to the first terminal device, i.e., the terminal device served by the NES cell, at a period MP n, and the system information modification indication does not include the updated WUS configuration, which is included in third WUS configuration information sent by the NES cell to the first terminal device, and the third WUS configuration information is sent through a system information block (SIB y) at a next period MP n+1 of the period MP n, i.e., the effective time is related to the next period MP n+1 or a time point at which the NES cell sends the third WUS configuration information in the next period MP n+1. Thus, the first terminal device completes the WUS configuration update at the period MP n+1.

[0089] In some embodiments, the effective time can be at least one of the following:

[0090] a boundary of a next modification period of the first cell or a start time of a system information block in which the third WUS configuration information is sent by the first cell;

[0091] a waiting time of the second cell from receiving the first WUS configuration information;

[0092] a difference between a modification period boundary of the first cell and a modification period boundary of the second cell.

[0093] For example, as shown in FIG. 5, the cell A receives the first WUS configuration information including the effective time, and the effective time of the updated WUS configuration can be set by the NES cell as a boundary of a next period MP n+1 of the period MP n, i.e., t1, or as a start time of a system information block in which the third WUS configuration information is located, i.e., t3, and the effective time can be an SFN number and / or a slot number and / or a symbol number, or an absolute time.

[0094] For another example, the effective time can also be a waiting time of the second cell from receiving the first WUS configuration information, as shown in FIG. 5, the cell A can send second WUS configuration information including the updated WUS configuration to the second terminal device after M milliseconds or M radio frames or M slots or M symbols after receiving the first WUS configuration information.

[0095] For another example, the effective time can also be the difference between the modification period boundary of the first cell and the modification period boundary of the second cell, as shown in FIG. 5, the effective time can be the difference between the modification period MP n+1 of the NES cell and the modification period MP m+1 of the cell A, and the difference can be N milliseconds or N radio frames or N time slots or N symbols.

[0096] In some embodiments, the effective time is indicated by a distributed unit (DU) of a network device to which the first cell belongs to a centralized unit (CU) of the network device to which the first cell belongs.

[0097] For example, as shown in FIG. 5, the effective time can be indicated by a DU (such as gNB-DU) of a network device to which the NES cell belongs to a CU (such as gNB-CU) of the network device to which the NES cell belongs, and the indication can be achieved by F1AP information, and the present application is not limited thereto.

[0098] In the above embodiments, as shown in FIG. 5, the cell A can send the second terminal device the second WUS configuration information containing the updated WUS configuration, and the second terminal device updates the WUS configuration immediately after receiving the second WUS configuration information, in addition, the cell A can also send the second terminal device the second WUS configuration information and the second time information, at this time, the second terminal device updates the WUS configuration according to the second time information after receiving the second WUS configuration information, and the second time information makes the sending time of the second WUS configuration information meet at least one of the above effective time.

[0099] In some embodiments, the first cell sends the first WUS configuration information at a first time, and the first time is related to the sending time of the third configuration information sent by the first cell to the terminal device served thereby, and the second cell sends the second WUS configuration information to the terminal device served thereby according to the first time, and the second WUS configuration information and the third WUS configuration information both include the updated WUS configuration.

[0100] FIG. 6 is another schematic diagram of one example of the configuration method of the wake-up signal according to the embodiments of the present application.

[0101] As shown in FIG. 6, after updating the WUS configuration, the NES cell (the first cell) sends a system information modification indication to the first terminal device, i.e., the terminal device served by the NES cell, at a period MP n, and sends third WUS configuration information containing the updated WUS configuration to the first terminal device at a next modification period MP n+1 of the period MP n; for the cell A (the second cell), after updating the WUS configuration, the NES cell sends first WUS configuration information to the cell A at a first time, and the cell A sends a system information modification indication and second WUS configuration information to the second terminal device, i.e., the terminal device served by the cell A, as soon as the cell A receives the first WUS configuration information at the first time.

[0102] In the example of FIG. 6, the cell A sends the second WUS configuration information containing the updated WUS configuration to the second terminal device as soon as the cell A receives the first WUS configuration information at the first time within the period MP m or the period MP m+1.

[0103] In some embodiments, the first time is at least one of:

[0104] a time of a next modification period of the first cell or before the time;

[0105] a time at which the first cell broadcasts a system information block including the third WUS configuration information or before the time;

[0106] a start time of a system information window (SI-window) in which the first cell broadcasts a system information block of the third WUS configuration information, which can also be described as a SI-window of a system information message (SI message) in which the system information block is located.

[0107] For example, as shown in FIG. 6, after updating the WUS configuration, the NES cell sends a system information modification indication to the first terminal device at the period MP n, and broadcasts a system information block containing the third WUS configuration information at a time t3 in the next modification period MP n+1 of the period MP n, the first time can be at a time of a boundary of the period MP n+1 or before the time, i.e., the first time can be t1 or before t1; the first time can also be at a time at which the NES cell broadcasts the system information block containing the third WUS configuration information or before the time, i.e., the first time can be t3 or before t3; the first time can also be at a start time of a system information window in which the NES cell broadcasts the system information block containing the third WUS configuration information or before the start time.

[0108] In some embodiments, the time of the boundary of the next modification period, or the time of broadcasting the system information block including the third WUS configuration information, or the starting time of the system information window broadcasting the system information block including the third WUS configuration information, is indicated by the DU of the first cell to the CU of the first cell.

[0109] For example, in FIG. 6, the gNB-DU to which the NES cell belongs can indicate to the gNB-CU to which the NES cell belongs the time of the boundary of the next modification period, or the time of broadcasting the system information block including the updated WUS configuration information to the first terminal device, or the starting time of the system information window broadcasting the system information block including the updated WUS configuration information to the first terminal device, and the indication information can be included in the F1AP message, and the present application is not limited thereto.

[0110] In some embodiments, the first cell sends indication information to the second cell at the second time, and the indication information indicates that the first cell broadcasts the updated WUS configuration information in the system information block thereof, and the second cell sends the second WUS configuration information to the terminal device served thereby according to the indication information, and the second WUS configuration information includes the updated WUS configuration.

[0111] FIG. 7 is another schematic diagram of one example of a configuration method of a wake-up signal according to an embodiment of the present application.

[0112] As shown in FIG. 7, the NES cell (the first cell) sends a system information modification indication to the first terminal device, i.e., the terminal device served by the NES cell, in the period MP n when the WUS configuration needs to be updated, and sends the third WUS configuration information to the first terminal device in the next modification period MP n+1 of the period MP n, and the third WUS configuration information includes the updated WUS configuration; for the cell A (the second cell), the NES cell sends the first WUS configuration information including the updated WUS configuration to the cell A after updating the WUS configuration, and sends indication information to the cell A at the second time, to instruct the cell A to send the system information modification indication and the second WUS configuration information to the second terminal device, i.e., the terminal device served by the cell A, for example, to instruct the cell A to broadcast the updated WUS configuration in the SIBx.

[0113] In some embodiments, the second time is at least one of:

[0114] the time of the boundary of the next modification period of the first cell or before the time;

[0115] the time of broadcasting the system information block including the third WUS configuration information by the first cell or before the time;

[0116] The start moment of the system information window of the first cell broadcasting the system information block including the third WUS configuration information or before the start moment.

[0117] The third WUS configuration information includes the updated WUS configuration.

[0118] As shown in FIG. 7, the NES cell sends the system information modification indication to the first terminal device in the modification period MP n, and sends the third WUS configuration information including the updated WUS configuration to the first terminal device in the next modification period MP n+1. In addition, the NES cell sends the indication information to the cell A at a second moment. The second moment can be the moment of the boundary of the modification period MP m+1 or before the moment, that is, the second moment can be t1 or before t1. The second moment can also be the moment when the NES cell broadcasts the system information block including the third WUS configuration information or before the moment, that is, the second moment can be t3 or before t3. The second moment can also be the start moment of the system information window of the NES cell broadcasting the system information block including the third WUS configuration information or before the start moment.

[0119] In some embodiments, the indication information is sent by a DU of a network device to which the first cell belongs to a CU of the network device to which the first cell belongs.

[0120] For example, taking FIG. 7 as an example, the indication information is sent by a DU (such as gNB-DU) of a network device to which the NES cell belongs to a CU (such as gNB-CU) of the network device to which the NES cell belongs. The indication information can be included in, for example, an F1AP message, and the present application is not limited thereto. In some embodiments, the modification period of the first cell and the modification period of the second cell have a certain relationship in time.

[0121] For example, the size of the modification period of the first cell is the same as the size of the modification period of the second cell, or the size of the modification period of the first cell is an integer multiple of the size of the modification period of the second cell, or the system information window of the first cell broadcasting the system information block including the third WUS configuration information is aligned with the system information window of the second cell broadcasting the system information block including the second WUS configuration information.

[0122] FIG. 8 is another schematic diagram of one example of a configuration method of a wake-up signal according to an embodiment of the present application.

[0123] For example, as shown in FIG. 8, the modification period size of the NES cell (the first cell) and the cell A (the second cell) are the same, both of which are MP n and MP n+1. In FIG. 8, the NES cell and the cell A both send the system information modification indication to the terminal devices served by the NES cell and the cell A respectively in the modification period MP n, and both send the system information block containing the third WUS configuration information and the system information block containing the second WUS configuration information respectively in the next modification period MP n+1 of the modification period MP n. Thus, the system information block containing the third WUS configuration information broadcast by the NES cell is time-aligned with the system information block containing the second WUS configuration information broadcast by the cell A or the time difference is less than a specific value.

[0124] In the above embodiment, the second cell (the cell A) can send the system information modification indication and the third WUS configuration information (the system information block (SIBx) containing the updated WUS configuration for the NES cell) according to the conventional method, and the application does not limit the behavior of the second cell.

[0125] In the above embodiment, the size of the modification period of the first cell and the size of the modification period of the second cell can be indicated or configured.

[0126] In some possible implementations, the size of the modification period of the first cell is indicated by the DU of the network device to which the first cell belongs to the CU of the network device to which the first cell belongs and / or indicated by the CU of the network device to which the first cell belongs to the CU of the network device to which the second cell belongs; and / or, the size of the modification period of the second cell is indicated by the DU of the network device to which the second cell belongs to the CU of the network device to which the second cell belongs and / or indicated by the CU of the network device to which the second cell belongs to the CU of the network device to which the first cell belongs.

[0127] For example, the gNB-DU to which the NES cell belongs can indicate the size of the modification period of the NES cell to the gNB-CU to which the NES cell belongs, for example, by using the F1AP message; and / or, the gNB-CU to which the NES cell belongs indicates the size of the modification period of the NES cell to the gNB-CU to which the cell A belongs, for example, by using the XnAP message; and / or, the gNB-DU to which the cell A belongs indicates the size of the modification period of the cell A to the gNB-CU to which the cell A belongs, for example, by using the F1AP message; and / or, the gNB-CU to which the cell A belongs indicates the size of the modification period of the cell A to the gNB-CU to which the NES cell belongs, for example, by using the XnAP message.

[0128] In some embodiments, the relationship between the modification period of the first cell and the modification period of the second cell in time is configured by an Operation Administration and Maintenance (OAM).

[0129] For example, the relationship between the modification period of the NES cell and the modification period of the cell A in time can be configured by the OAM, e.g., the length of the modification period in the NES cell and the modification period in the cell A in time is indicated to be the same or the modification period of the NES cell is an integer multiple of the modification period of the cell A.

[0130] In some embodiments, the first cell sends a system information modification indication to the terminal devices served by the first cell after sending the first WUS configuration information to the second cell, after receiving an acknowledgement message from the second cell, or after a certain time. For example, referring to FIGS. 5-8, after the NES cell sends the first WUS configuration information to the cell A, the NES cell can send a system information modification indication to the first terminal devices served by the NES cell after receiving an acknowledgement message from the cell A or after a certain time. The certain time can be predefined.

[0131] In some embodiments, the second cell sends a system information modification indication to the terminal devices served by the second cell after receiving the first WUS configuration information.

[0132] For example, referring to FIGS. 5-8, after receiving the first WUS configuration information, the cell A sends a system information modification indication to the second terminal devices served by the cell A.

[0133] In some embodiments, the second cell further performs at least one of the following operations:

[0134] indicates a system information block change or a WUS configuration information change in the system information modification indication sent, e.g., using 1 bit;

[0135] broadcasts a system information block including the second WUS configuration information starting at the time indicated by the validity time of the updated WUS configuration;

[0136] broadcasts a system information block including the second WUS configuration information and includes second time information in the system information block, the second time information being the validity time or the validity time minus a time difference from receiving the first WUS configuration information to broadcasting the system information block;

[0137] broadcasts a system information block including the second WUS configuration information starting at the next modification period of the second cell or the modification period containing the validity time;

[0138] In the case of receiving the indication information sent by the first cell, the second cell broadcasts the system information block including the second WUS configuration information.

[0139] The CU of the network device to which the second cell belongs indicates the above operation to the DU of the network device to which the second cell belongs.

[0140] The second WUS configuration information includes the updated WUS configuration.

[0141] For example, in the case that the first WUS configuration information includes the effective time of the updated WUS configuration, the cell A (the second cell) starts to broadcast the system information block including the second WUS configuration information to the second terminal device served by the cell A at the time indicated by the effective time.

[0142] For another example, in the case that the first WUS configuration information includes the effective time of the updated WUS configuration, the cell A (the second cell) can also broadcast the system information block including the second WUS configuration information and the second time information to the second terminal device, the second time information can be the effective time, or the time difference between the effective time and the time of broadcasting the system information block.

[0143] For another example, in the case that the cell A (the second cell) receives the first WUS configuration information and the effective time at the modification period MP m, the cell A starts to broadcast the system information block including the second WUS configuration information at the next modification period MP m+1 of the modification period MP m, or at the modification period containing the effective time. In this example, the time difference between the boundary of the next modification period in the cell A and the boundary of the next modification period in the NES cell can be set to be relatively small, so as to reduce the probability of the occurrence of the WUS configuration misalignment.

[0144] For another example, in the case that the cell A receives the first WUS configuration information at the first time, the cell A immediately broadcasts the system information block including the second WUS configuration information.

[0145] For another example, in the case that the cell A (the second cell) receives the indication information sent by the NES cell, the cell A immediately broadcasts the system information block including the second WUS configuration information, the indication information is used to indicate that the NES cell broadcasts the updated WUS configuration information in the system information block.

[0146] For another example, in the case that the CU of the network device to which the cell A belongs indicates the above operation to the DU of the network device to which the cell A belongs, the cell A performs the corresponding operation.

[0147] In some embodiments, the terminal device served by the second cell also performs at least one of the following operations:

[0148] acquire the system information block including the second WUS configuration information from the next modification period of the second cell, so as to obtain the updated WUS configuration;

[0149] acquire the SIB1 immediately after receiving the system information modification indication sent by the second cell, and acquire the system information block including the second WUS configuration information immediately in the case that the value tag corresponding to the system information block including the second WUS configuration information indicated by the SIB1 changes;

[0150] acquire the system information block including the second WUS configuration information immediately after receiving the system information modification indication, wherein the system information modification indication is used to indicate that the second WUS configuration information changes or the system information block including the second WUS configuration information changes;

[0151] if the second time is included in the system information block including the second WUS configuration information received from the second cell, then the second terminal device uses the WUS configuration included in the system information block to perform the sending of the WUS to the first cell and / or the receiving of the RAR sent by the first cell and / or the receiving of the on-demand SIB1 sent by the first cell from the second time.

[0152] For example, in the above embodiments, as shown in FIG. 5 or FIG. 8, the second terminal device receives the system information modification indication in the modification period MP m, and acquires the system information block including the second WUS configuration information from the next modification period MP m+1 of the cell A, so as to obtain the updated WUS configuration. As shown in FIG. 6 or FIG. 7, the second terminal device receives the system information modification indication sent by the cell A, and acquires the SIB1 (not shown in the figure) immediately after receiving the system information modification indication, and acquires the system information block including the second WUS configuration information immediately in the case that the value tag corresponding to the system information block including the second WUS configuration information indicated by the SIB1 changes. In addition, the second terminal device can also acquire the system information block including the second WUS configuration information immediately after receiving the system information modification indication sent by the cell A in the case that the system information modification indication indicates that the system information block including the second WUS configuration information changes or indicates that the second WUS configuration information changes.

[0153] In some embodiments, as shown in FIG. 5, if the second time is included in the system information block including the second WUS configuration information received by the second terminal device from the cell A, then the second terminal device uses the WUS configuration included in the system information block to perform the sending of the WUS to the NES cell, or the receiving of the RAR sent by the NES cell, or the receiving of the on-demand SIB1 sent by the NES cell from the second time.

[0154] The above is only an example, and the terminal device served by the second cell can also perform other corresponding actions according to the indication or configuration of the second cell. For details, refer to related technologies, which will not be repeated here.

[0155] The above has exemplarily described the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications can also be made on the basis of the above various embodiments. For example, the above various embodiments can be used alone, or one or more of the above various embodiments can be combined.

[0156] According to the method of the embodiments of the present application, the first cell supporting or using the on-demand SIB1 can send the first WUS configuration information including the updated WUS configuration to the second cell assisting the on-demand SIB1 process of the first cell after determining the updated WUS configuration, which helps the terminal device in the second cell to keep the WUS configuration obtained from the second cell consistent with the WUS configuration in the first cell, avoids the problem of being unable to obtain the on-demand SIB1 of the first cell due to inconsistent WUS configurations, and the method is simple and easy to implement.

[0157] Embodiments of the second aspect

[0158] The embodiments of the present application provide a method for configuring a wake-up signal, which is described from the side of the second cell, and the same content as the embodiments of the first aspect will not be repeated.

[0159] FIG. 9 is another schematic diagram of the method for configuring a wake-up signal according to the embodiments of the present application.

[0160] As shown in FIG. 9, the method includes:

[0161] 901: receiving the first WUS configuration information sent by the first cell, the first WUS configuration information including the updated WUS configuration determined by the first cell;

[0162] The first cell is a cell supporting or using on-demand system information block type 1 (on-demand SIB1), and the second cell is a cell assisting the on-demand SIB1 process of the first cell.

[0163] In some embodiments, the first WUS configuration information includes an effective time of the updated WUS configuration, and the second cell sends second WUS configuration information to the terminal device served thereby according to the effective time, the second WUS configuration information including the updated WUS configuration.

[0164] The effective time can be related to the time when the first cell sends third WUS configuration information to the terminal device served thereby, and the third WUS configuration information includes the updated WUS configuration.

[0165] In some embodiments, the effective time is at least one of:

[0166] a boundary of a next modification period of the first cell or a start time of a system information block in which the first cell transmits the third WUS configuration information;

[0167] a waiting time of the second cell from receiving the first WUS configuration information;

[0168] a difference between a modification period boundary of the first cell and a modification period boundary of the second cell.

[0169] In some embodiments, the first cell transmits the first WUS configuration information to the second cell at a first time, the first time is related to a transmission time of the first cell transmitting the third WUS configuration information to a terminal device served by the first cell, and the second cell transmits the second WUS configuration information to a terminal device served by the second cell according to the first time, the second WUS configuration information and the third WUS configuration information include the updated WUS configuration.

[0170] wherein the first time can be at least one of:

[0171] a time of a boundary of a next modification period of the first cell or before the time;

[0172] a time of the first cell broadcasting a system information block including the third WUS configuration information or before the time;

[0173] a start time of a system information window of the first cell broadcasting a system information block including the third WUS configuration information or before the start time.

[0174] In some embodiments, the first cell transmits indication information to the second cell at a second time, the indication information indicates that the first cell broadcasts updated WUS configuration information in a system information block, and the second cell transmits the second WUS configuration information to a terminal device served by the second cell according to the indication information, the second WUS configuration information includes the updated WUS configuration.

[0175] wherein the second time can be at least one of:

[0176] a time of a boundary of a next modification period of the first cell or before the time;

[0177] a time of the first cell broadcasting a system information block including the third WUS configuration information or before the time;

[0178] a start time of a system information window of the first cell broadcasting a system information block including the third WUS configuration information or before the start time;

[0179] The third WUS configuration information comprises the updated WUS configuration.

[0180] In some embodiments, the modification period of the first cell and the modification period of the second cell have a certain relationship in time.

[0181] The size of the modification period of the first cell can be indicated by a DU of a network device to which the first cell belongs to a CU of the network device to which the first cell belongs and / or by the CU of the network device to which the first cell belongs to a CU of a network device to which the second cell belongs; and / or the size of the modification period of the second cell can be indicated by a DU of a network device to which the second cell belongs to a CU of the network device to which the second cell belongs and / or by the CU of the network device to which the second cell belongs to a CU of the network device to which the first cell belongs.

[0182] Alternatively, the relationship of the modification period of the first cell and the modification period of the second cell in time can be configured by Operation Administration and Maintenance (OAM).

[0183] In some embodiments, after receiving the first WUS configuration information, the second cell sends a message indicating system information modification to a terminal device served by the second cell.

[0184] In some embodiments, the second cell further performs at least one of the following operations:

[0185] The message indicating system information modification sent indicates a system information block change or a WUS configuration information change, for example, using 1 bit;

[0186] The system information block comprising the second WUS configuration information is broadcasted starting from the time indicated by the validity time of the updated WUS configuration;

[0187] The system information block comprising the second WUS configuration information is broadcasted, and the second time information is included in the system information block, the second time information being the validity time, or being the validity time minus a time difference from receiving the first WUS configuration information to broadcasting the system information block;

[0188] The system information block comprising the second WUS configuration information is broadcasted starting from the beginning of the next modification period of the second cell or the modification period containing the validity time;

[0189] In the case of receiving the indication information sent by the first cell, the system information block comprising the second WUS configuration information is broadcasted, the indication information indicating that the first cell broadcasts the updated WUS configuration information in the system information block thereof;

[0190] The CU of the network device to which the second cell belongs indicates the operation to the DU of the network device to which the second cell belongs.

[0191] The second WUS configuration information includes the updated WUS configuration.

[0192] In some embodiments, the terminal device served by the second cell further performs at least one of the following operations:

[0193] Obtains a system information block including the second WUS configuration information from the next modification period of the second cell, so as to obtain an updated WUS configuration.

[0194] After receiving the message indicating the system information modification sent by the second cell, immediately obtains the SIB1, and in the case that a value tag corresponding to the system information block including the second WUS configuration information indicated by the SIB1 changes, immediately obtains the system information block.

[0195] After receiving the message indicating the system information modification, immediately obtains the system information block including the second WUS configuration information.

[0196] If the second time is included in the system information block including the second WUS configuration information received from the second cell, the terminal device starts to use the WUS configuration included in the system information block for the transmission of the WUS to the first cell and / or the reception of the RAR sent by the first cell and / or the reception of the on-demand SIB1 sent by the first cell from the second time.

[0197] In 901, the related content of the first cell and the third WUS configuration information can refer to the embodiments of the first aspect, and the same content as the embodiments of the first aspect will not be repeated.

[0198] According to the above embodiments, the terminal device in the second cell can keep the WUS configuration obtained from the second cell consistent with the WUS configuration in the first cell, avoid the problem that the on-demand SIB1 of the first cell cannot be obtained due to the inconsistent WUS configuration, and the method is simple and easy to implement.

[0199] Embodiments of the third aspect

[0200] The embodiments of the present application provide a method for obtaining on-demand system information from the side of the terminal device.

[0201] FIG. 10 is a schematic diagram of a method for obtaining on-demand system information according to an embodiment of the present application. As shown in FIG. 10, the method includes:

[0202] 1001: The terminal device skips the requesting procedure and / or the acquiring procedure of the on-demand SIB1 when acquiring a requested system information (SI) message or system information block (SIB) in a first cell, and acquires the requested system information (SI) or system information block (SIB); the first cell is a cell supporting or using on-demand system information block type 1 (on-demand SIB1).

[0203] In 1001, the requested SI does not include SIB1, for example, includes SIB2 or other SIBs, or the requested SIB is not SIB1, for example, is SIB2 or other SIBs.

[0204] In the prior art, in order to acquire system information in a cell, for example, on-demand SI, the terminal device first acquires SIB1, and if the broadcast status (si-BroadcastStatus) of the to-be-acquired SI is indicated as notBroadcasting in SIB1, the terminal device initiates an on-demand SI requesting procedure to acquire the on-demand SI.

[0205] However, for a NES cell with on-demand SIB1, if the terminal device wants to acquire on-demand SI in the NES cell, the terminal device needs to first initiate an on-demand SIB1 requesting procedure to acquire the on-demand SIB1, and if the broadcast status of the to-be-acquired on-demand SI is indicated as notBroadcasting in the on-demand SIB1, the terminal device initiates an on-demand SI requesting procedure to acquire the on-demand SI. If many terminal devices need to acquire on-demand SI, there will be a lot of signaling overhead of WUS, RAR, and on-demand SIB1 in the NES cell, increasing the power consumption of the NES cell.

[0206] According to the above embodiments, when acquiring SI or SIB, the terminal device can skip the requesting and acquiring procedures of on-demand SIB1, reducing the WUS sending and RAR and on-demand SIB1 receiving of the terminal device before requesting on-demand SI, and reducing the radio resource overhead and the power consumption of the UE and the NES cell.

[0207] In some embodiments, the terminal device considers that the requested SI message or SIB is not broadcast in the first cell. For example, the terminal device can consider that the requested SIB or SI in a NES cell with on-demand SIB1 is not broadcast in the NES cell.

[0208] In the above embodiment, the terminal device can directly initiate the on-demand SI request procedure to acquire the requested SI message or SIB. That is, since the terminal device considers that the broadcast status of the requested SI message or SIB is notBroadcasting, the terminal device can skip the on-demand SIB1 request procedure and the SIB1 acquisition procedure, and directly acquire the requested SI message or SIB.

[0209] In the above embodiment, in the first cell, the broadcast status of the requested SI message is notBroadcasting. For example, in the NES cell, the terminal device requests the SI message which is not broadcast in the NES cell.

[0210] In the above embodiment, it can be specified in the standard that in the NES cell with on-demand SIB1, the broadcast status of the on-demand SI is notBroadcasting.

[0211] In some embodiments, the terminal device considers that the requested SI message or SIB is being broadcast in the first cell. For example, the terminal device considers that the requested SIB or SI in the NES cell with on-demand SIB1 is being broadcast in the NES cell, and when acquiring the requested SIB or SI, the terminal device can directly acquire the requested SIB or SI. Wherein, the SIB is not SIB1.

[0212] In the above embodiment, the terminal device directly acquires the requested SI message or SIB. That is, since the terminal device considers that the requested SI or SIB in the NES cell is being broadcast in the NES cell, when acquiring the requested SIB or SI, the terminal device can skip the on-demand SIB1 request procedure and SIB1 and the on-demand SI request procedure, and directly acquire the requested SI message or SIB.

[0213] In the above embodiment, in the first cell, the broadcast status of the requested SI message is Broadcasting. For example, in the NES cell, the broadcast status of the SI message requested by the terminal device is Broadcasting.

[0214] In the above embodiment, it can be specified in the standard as follows: in the NES cell with on-demand SIB1, the broadcast status of the on-demand SI is Broadcasting.

[0215] In some embodiments, the terminal device acquires the requested SI message or SIB from the first cell, and in the case that the requested SI message or SIB is not acquired, initiates an on-demand SI request procedure to acquire the requested SI message or SIB. For example, the terminal device acquires the requested on-demand SI from the NES cell with on-demand SIB1, and if not acquired in a first time period, the terminal device initiates an on-demand SI request procedure to acquire the requested on-demand SI. The first time period can be configured by the network device, or equal to the time length of the modification period.

[0216] In some embodiments, the terminal device determines to perform the on-demand SI request procedure to acquire the requested SI message or SIB, or directly acquires the requested SIB message or SIB, according to the broadcast state of the requested SI message or SIB.

[0217] In the above embodiments, the broadcast state of at least one requested SI message or SIB in the first cell can be indicated by the first cell or a second cell, which is a cell assisting the on-demand SIB1 procedure of the first cell. The definition of the first cell and the second cell has been described in the embodiments of the first aspect, and will not be repeated here.

[0218] For example, in the NES cell with on-demand SIB, the broadcast state of at least one on-demand SI in the NES cell (the first cell) is indicated by the NES cell through the MIB (Master Information Block) or RRC (Radio Resource Control) message, or can be indicated by the SIB in the cell A (the second cell), and the terminal device can obtain the broadcast state of the on-demand SI according to the indication message, and determine to perform the on-demand SI request procedure or directly acquire the requested on-demand SI.

[0219] The above various embodiments are only exemplarily described for the embodiments of the present application, but the present application is not limited thereto, and can be appropriately modified on the basis of the above various embodiments. For example, the above various embodiments can be used alone, or one or more of the above various embodiments can be combined.

[0220] According to the method of the embodiments of the present application, when the terminal device acquires SI or SIB, the terminal device can skip the request and acquisition process of the on-demand SIB1, thereby reducing the WUS transmission and RAR and on-demand SIB1 reception of the terminal device before the terminal device requests the on-demand SI, and reducing the radio resource overhead and the power consumption of the UE and the NES cell.

[0221] Embodiments of the fourth aspect

[0222] The embodiments of the present application provide a cell selection method, which is described from the side of the terminal device. The same content as the embodiments of the first aspect is not repeated.

[0223] FIG. 11 is a schematic diagram of a cell selection method according to an embodiment of the present application. As shown in FIG. 11, the method comprises the following steps.

[0224] 1101: When the terminal device is transferred from an RRC connected state to an RRC idle state or an RRC inactive state in a first cell, a suitable cell is determined according to a default configuration or an on-demand SIB1 of the first cell or a second message transmitted by the first cell; the first cell is a cell supporting or using an on-demand SIB1.

[0225] In the prior art, the RAN2#127 standard describes the following content:

[0226] That is, the terminal device reacquires SIB1 whenever selecting or reselecting a cell, thereby ensuring that the terminal device has a valid SIB for the cell, and further ensuring that the UE keeps the SIB1 updated when the UE is in the cell through a conventional SI modification procedure.

[0227] However, when the terminal device is transferred from an RRC connected (RRC_Connected) state to an RRC_Idle or RRC_Inactive state, the terminal device performs a cell selection process. According to the prior art, when the terminal device is transferred from an RRC connected state to an RRC_Idle or RRC_Inactive state in an NES cell, the terminal device performs a cell selection process. In the process of selecting a cell, if the SSB of the NES cell is detected, the SIB1 of the NES cell needs to be acquired, and thus the terminal device needs to initiate an on-demand SIB1 request process to obtain the on-demand SIB1 of the NES cell, which increases the radio resource occupation of WUS, RAR and on-demand SIB1 transmission and the power consumption of the terminal device and the network device.

[0228] According to the above embodiments, when the terminal device transits from the RRC connected state to the RRC idle state or the RRC inactive state in the first cell, the terminal device can determine the suitable cell according to the default configuration or the on-demand SIB1 of the first cell or the second message sent by the first cell, thereby reducing the on-demand SIB1 request process of the terminal device and the acquisition of the on-demand SIB, and reducing the wireless resource occupation of WUS, RAR and on-demand SIB1 transmission and the power consumption of the terminal device and the network device.

[0229] In some embodiments, the default configuration means that the terminal device defaults the first cell as the suitable cell, or the terminal device defaults the first cell as barred or not suitable.

[0230] For example, when the terminal device connects to the NES cell with the on-demand SIB1, the terminal device considers the NES cell as the suitable cell when transiting from the RRC connected state to the RRC idle state or the RRC inactive state, or the terminal device considers the NES cell as barred or not suitable, that is, the terminal device can no longer acquire the on-demand SIB1 of the NES cell.

[0231] In some embodiments, when the terminal device defaults the first cell as the suitable cell, the terminal device selects the first cell and / or camps on the first cell; and / or, when the terminal device defaults the first cell as barred or not suitable, the terminal device excludes the first cell from the candidate cells and / or selects other cells except the first cell.

[0232] For example, when the terminal device considers the NES cell as the suitable cell, the terminal device selects the NES cell and camps on the NES cell; when the terminal device considers the NES cell as the barred or not suitable cell, the terminal device excludes the NES cell from the candidate cells for cell selection or selects other cells except the NES cell, for example, the second cell, that is, the cell A or other cells (for example, other NES cells).

[0233] In some embodiments, the terminal device receives the first message sent by the first cell when in the RRC connected state, and the first message includes the on-demand SIB1 of the first cell; when the terminal device transits from the RRC connected state to the RRC idle state or the RRC inactive state, the terminal device determines the suitable cell according to the on-demand SIB1 of the first cell included in the first message.

[0234] In the above embodiments, the first message can be an RRC reconfiguration message or an RRC release message, and the present application is not limited thereto.

[0235] For example, the NES cell can send an RRC reconfiguration message or an RRC release message to the terminal device, and the message includes the SIB1 of the NES cell. When the terminal device is transferred from the RRC connected state to the RRC idle state or the RRC inactive state, the terminal device can determine whether the NES cell is a suitable cell or whether it is allowed to be camped according to the SIB1 included in the message.

[0236] In some embodiments, the terminal device determines the suitable cell according to the stored on-demand SIB1 of the first cell.

[0237] In the above embodiments, the stored on-demand SIB1 of the first cell can be the on-demand SIB1 of the first cell acquired by the terminal device in the previous cell selection or cell reselection process.

[0238] For example, the terminal device acquires the on-demand SIB1 of the first cell (i.e., the NES cell) through the on-demand SIB1 request process in the previous cell selection or cell reselection process, and stores the on-demand SIB1 of the NES cell. Then, in the process of the terminal device being transferred to the RRC_Inactive or RRC_Idle state, the terminal device can use the stored on-demand SIB1 of the NES cell to determine whether the NES cell is a suitable cell or whether it is allowed to be camped in the cell selection process, wherein the on-demand SIB1 of the NES cell is the on-demand SIB1 of the NES cell acquired by the terminal device in the previous cell selection or cell reselection process.

[0239] In some embodiments, the second message includes the related information of the second cell, and the terminal device determines the suitable cell according to the related information of the second cell, wherein the second cell is a cell that assists the on-demand SIB1 process of the first cell.

[0240] For example, the NES cell sends a second message including the related information of the second cell to the terminal device, and the terminal device performs cell selection according to the second message, wherein the second cell can be the cell A or other cells.

[0241] In the above embodiments, the second message can be an RRC reconfiguration message or an RRC release message, and the application is not limited thereto. The redirectedCarrierInfo in the RRC reconfiguration message and the RRC release message can indicate the related information of the second cell.

[0242] In the above embodiments, the related information of the second cell includes but is not limited to at least one of the following:

[0243] The carrier frequency (carrierFreq) of the second cell;

[0244] The SSB subcarrier spacing (ssbSubcarrierSpacing) of the second cell;

[0245] The SSB measurement timing configuration (SS / PBCH block measurement timing configuration, smtc) of the second cell.

[0246] The above embodiments only exemplarily illustrate the embodiments of the application, but the application is not limited thereto, and can be appropriately modified on the basis of the above embodiments. For example, the above embodiments can be used alone, or one or more of the above embodiments can be combined.

[0247] According to the method of the embodiments of the application, when the terminal device transits from the RRC connected state to the RRC idle state or the RRC inactive state in the first cell, the terminal device can determine a suitable cell according to the default configuration or the on-demand SIB1 of the first cell or the second message sent by the first cell, thereby reducing the on-demand SIB1 request process of the terminal device and the acquisition of the on-demand SIB, and reducing the wireless resource occupation of WUS, RSR and on-demand SIB1 transmission and the power consumption of the terminal device and the network device.

[0248] Embodiments of the fifth aspect

[0249] The embodiments of the application provide a sending method of an on-demand SSB transmission indication, which is described from the side of the terminal device, and the same content as the embodiments of the first aspect will not be repeatedly described.

[0250] FIG. 12 is a schematic diagram of the sending method of the on-demand SSB transmission indication according to the embodiments of the application, as shown in FIG. 12, the method includes:

[0251] 1201: The terminal device receives a first MAC CE for indicating an on-demand SSB transmission indication, the first MAC CE comprising at least one SCell index field and at least one on-demand SSB configuration field; the SCell index field indicates an index of a SCell, and the on-demand SSB configuration field indicates an on-demand SSB configuration of at least one SCell.

[0252] In the embodiment, the SCell index can also be expressed as a cell id or a cell index, etc.

[0253] In the prior art, the following is described in Release 19:

[0254] The following is described in RAN2 #127:

[0255] The following is described in RAN1 #118:

[0256] According to the above, a new MAC CE is introduced for indicating the transmission of on-demand SSB in the SCell of the terminal device. The RRC message sent by the NES cell to the terminal device can configure the value of the period of multiple on-demand SSBs, and the MAC CE for on-demand SSB transmission indication sent by the NES cell to the terminal device can indicate the value of the period of the on-demand SSB applied.

[0257] However, the format of the MAC CE for on-demand SSB transmission indication is not yet clear.

[0258] According to the above embodiment, the first MAC CE for indicating the on-demand SSB transmission indication comprises at least one SCell index field and at least one on-demand SSB configuration field, which can save signaling overhead when the number of indicated SCells is large, save wireless resources, and the method is simple and easy to implement.

[0259] In some embodiments, the first MAC CE is of fixed length and comprises K pairs of SCell index and SCell-related on-demand SSB configuration, where K is a positive integer.

[0260] In the above embodiments, the value of K can be predefined or configured by a network device, for example, the value of K can be predefined as 1, or configured by the network device as one of positive integers from 1 to 8.

[0261] In some embodiments, the length of the secondary cell index field can be 3 bits or 5 bits; the length of the on-demand SSB configuration field can be 3 bits or 5 bits or 8 bits.

[0262] For example, the secondary cell index (SCell index) field indicates the index of a secondary cell (SCell), when the length of the secondary cell index field is 3 bits, it can be used to indicate 7 secondary cells; when the length of the secondary cell index field is 5 bits, it can be used to indicate 31 secondary cells. For another example, for on-demand SSB configuration, the on-demand SSB configuration can indicate the SSB configuration of at least one secondary cell, the length of the on-demand SSB configuration field can be 3 bits or 5 bits or 8 bits.

[0263] In some embodiments, the on-demand SSB configuration field can include the period of on-demand SSB, and can also include other parameters.

[0264] In some embodiments, the subheader of the first MAC CE includes an LCID (logical channel identifier) field or an eLCID (extended logical channel identifier) field, and in addition can not include a length indication (L) field. In the case of including eLCID, the value (codepoint) of the eLCID field can be 215, and the corresponding index (Index) is 279.

[0265] FIG. 13 is a schematic diagram of the format of the first MAC CE of the embodiments of the present application when the first MAC CE is of fixed length. The leftmost bit in the first row in the figure represents the most significant bit (most significant bit), and the rightmost bit in the last row represents the least significant bit (least significant bit). The bits are read from left to right and in the order of rows.

[0266] In the format of two MAC CEs as shown in FIG. 13(a), the length of the secondary cell index field is 3 bits, the length of the on-demand SSB configuration field is 3 bits (right figure) or 5 bits (left figure) respectively, wherein in the right figure, the position of R bits can also be between the SCell index field and the on-demand SSB configuration field; as shown in FIG. 13(b), in the format of the MAC CE, the length of the secondary cell index field is 5 bits, and the length of the on-demand SSB configuration field is 3 bits; as shown in FIG. 13(c), in the format of two MAC CEs, the length of the secondary cell index field is 3 bits (left figure) or 5 bits (right figure), and the length of the on-demand SSB configuration field is 8 bits, wherein the position of R bits can also be on the left side of the SCell index field (i.e. the bit position with higher importance than the SCell index field).

[0267] According to the above embodiments, the MAC CE with fixed length is adopted, the format is simple, easy to implement, and when the number of indicated SCells is small, the signaling overhead can be saved, and the wireless resources can be saved.

[0268] In some embodiments, the first MAC CE is variable length, and includes a bitmap for indicating the state of the on-demand SSB configuration of the secondary cell.

[0269] For example, 1 bit in a bitmap is used to indicate the activation or deactivation of the on-demand SSB transmission in one secondary cell.

[0270] In some embodiments, the length of the bitmap is 8 bits or 32 bits.

[0271] When the length of the bitmap is 8 bits, it can be used to indicate the state of the on-demand SSB transmission of 7 secondary cells; when the length of the bitmap is 32 bits, it can be used to indicate the state of the on-demand SSB transmission of 31 secondary cells.

[0272] For example, the bits in the bitmap are denoted as Ci, when Ci is set to 1, it indicates that the on-demand SSB in the SCell with SCell index i is transmitted or indicates to activate the on-demand SSB transmission; when Ci is set to 0, it indicates that the on-demand SSB in the SCell with SCell index i is not transmitted or indicates to deactivate the on-demand SSB transmission.

[0273] In some embodiments, the length of the on-demand SSB configuration field is 3 bits or 8 bits.

[0274] FIG. 14 is a schematic diagram of the format of the first MAC CE when the length is variable according to an embodiment of the present application. The leftmost bit in the first row represents the most significant bit, and the rightmost bit in the last row represents the least significant bit. The bits are read from left to right and in the order of the rows.

[0275] As shown in FIG. 14, the length of the bitmap is 8 bits, which is used to indicate the status of on-demand SSB transmission in 7 SCells. When the length of the on-demand SSB configuration field is 8 bits, the format of the first MAC CE is shown in FIG. 14(a). When the length of the on-demand SSB configuration field is 4 bits, the number of the first MAC CE is shown in FIG. 14(b). The position of the R bits can also be on the left side of the on-demand SSB configuration field.

[0276] In the above embodiments, the period of the on-demand SSB can be 5 ms, 10 ms, 20 ms, 40 ms, 80 ms, 160 ms, and can also be a value higher than 160 ms, such as 320 ms and 640 ms, etc.

[0277] According to the above embodiments, the MAC CE with variable length is used, which can save signaling overhead and save wireless resources when the number of indicated SCells is large, and the method is flexible and easy to implement.

[0278] According to the embodiments of the present application, the first MAC CE for indicating the on-demand SSB transmission indication includes at least one SCell index field and at least one on-demand SSB configuration field, which can save signaling overhead and save wireless resources when the number of indicated SCells is large, and the method is simple and easy to implement.

[0279] Embodiments of the sixth aspect

[0280] The embodiments of the present application provide a configuration device of a wake-up signal, which is configured in a first cell. The device of the embodiments of the present application corresponds to the method of the embodiments of the first aspect, and the same content as the embodiments of the first aspect will not be repeated.

[0281] FIG. 15 is a schematic diagram of a configuration device of a wake-up signal according to an embodiment of the present application.

[0282] As shown in FIG. 15, the wake-up signal configuration apparatus 1500 of the embodiments of the present application includes:

[0283] a sending unit 1501 configured to send, to a second cell, first WUS configuration information including the updated WUS configuration after determining the updated WUS configuration;

[0284] The first cell is a cell supporting or using on-demand System Information Block Type 1 (on-demand SIB1), and the second cell is a cell assisting the on-demand SIB1 procedure of the first cell.

[0285] In some embodiments, the first WUS configuration information includes an effective time of the updated WUS configuration, and the second cell sends, to the terminal device served thereby, second WUS configuration information including the updated WUS configuration according to the effective time.

[0286] In some embodiments, the effective time is related to a time at which the first cell sends, to the terminal device served thereby, third WUS configuration information including the updated WUS configuration.

[0287] In some embodiments, the effective time is at least one of:

[0288] a boundary of a next modification period of the first cell or a start time of a system information block in which the third WUS configuration information is sent by the first cell;

[0289] a waiting time of the second cell from receiving the first WUS configuration information;

[0290] a difference between a modification period boundary of the first cell and a modification period boundary of the second cell.

[0291] In some embodiments, the effective time is indicated by a distributed unit (DU) of a network device to which the first cell belongs to a centralized unit (CU) of the network device.

[0292] In some embodiments, the sending unit 1501 sends, to the second cell, the first WUS configuration information at a first time, the first time being related to a sending time of third WUS configuration information sent by the first cell to the terminal device served thereby, and the second cell sends, to the terminal device served thereby, second WUS configuration information at the first time, the second WUS configuration information and the third WUS configuration information including the updated WUS configuration.

[0293] In some embodiments, the first time is at least one of:

[0294] the time instance of the boundary of the next modification period of the first cell or before the time instance;

[0295] the time instance of the first cell broadcasting a system information block including the third WUS configuration information or before the time instance;

[0296] the starting time instance of the system information window of the first cell broadcasting a system information block including the third WUS configuration information or before the starting time instance.

[0297] In some embodiments, the time instance of the boundary of the next modification period, or the time instance of the first cell broadcasting a system information block including the third WUS configuration information, or the starting time instance of the system information window of the first cell broadcasting a system information block including the third WUS configuration information, is indicated by a DU of a network device to which the first cell belongs to a CU of the network device.

[0298] In some embodiments, the sending unit 1501 sends, at the second time instance, indication information to the second cell, the indication information indicating that the first cell broadcasts updated WUS configuration information in a system information block thereof, and the second cell sends, according to the indication information, second WUS configuration information to terminal devices served thereby, the second WUS configuration information including the updated WUS configuration.

[0299] In some embodiments, the second time instance is at least one of:

[0300] the time instance of the boundary of the next modification period of the first cell or before the time instance;

[0301] the time instance of the first cell broadcasting a system information block including the third WUS configuration information or before the time instance;

[0302] the starting time instance of the system information window of the first cell broadcasting a system information block including the third WUS configuration information or before the starting time instance.

[0303] wherein the third WUS configuration information includes the updated WUS configuration.

[0304] In some embodiments, the indication information is sent by a DU of a network device to which the first cell belongs to a CU of the network device.

[0305] In some embodiments, the modification period of the first cell and the modification period of the second cell have a certain relationship in time.

[0306] In some embodiments, the size of the modification period of the first cell is indicated by a DU of a network device to which the first cell belongs to a CU of the network device, and / or indicated by the CU of the network device to which the second cell belongs to a CU of a network device to which the second cell belongs; and / or, the size of the modification period of the second cell is indicated by a DU of a network device to which the second cell belongs to a CU of the network device, and / or indicated by the CU of the network device to which the first cell belongs to a CU of a network device to which the first cell belongs; or,

[0307] The relationship between the modification period of the first cell and the modification period of the second cell in time is configured by Operation Administration and Maintenance (OAM).

[0308] In some embodiments, after the first cell sends the first WUS configuration information to the second cell, the first cell sends a message indicating system information modification to a terminal device served by the first cell after receiving an acknowledgement message from the second cell or after a certain time.

[0309] In some embodiments, after receiving the first WUS configuration information, the second cell sends a message indicating system information modification to a terminal device served by the second cell.

[0310] In some embodiments, the second cell further performs at least one of the following operations:

[0311] The message indicating system information modification sent indicates a system information block change or a WUS configuration information change;

[0312] Broadcasting a system information block including the second WUS configuration information at the time indicated by the validity time of the updated WUS configuration;

[0313] Broadcasting a system information block including the second WUS configuration information and including second time information in the system information block, the second time information being the validity time, or being the validity time minus a time difference from receiving the first WUS configuration information to broadcasting the system information block;

[0314] Broadcasting a system information block including the second WUS configuration information at the beginning of the next modification period of the second cell or a modification period containing the validity time;

[0315] In the case of receiving the indication information sent by the first cell, broadcasting a system information block including the second WUS configuration information, the indication information indicating that the first cell broadcasts updated WUS configuration information in its system information block;

[0316] a CU of a network device to which the second cell belongs indicates the above operation to a DU of the network device to which the second cell belongs.

[0317] The second WUS configuration information includes the updated WUS configuration.

[0318] In some embodiments, the terminal device served by the second cell further performs at least one of the following operations:

[0319] acquires a system information block including the second WUS configuration information from a next modification period of the second cell, thereby obtaining the updated WUS configuration;

[0320] after receiving the message indicating system information modification sent by the second cell, immediately acquires a SIB1, and in a case where a value tag corresponding to a system information block including the second WUS configuration information indicated by the SIB1 changes, immediately acquires the system information block;

[0321] after receiving the message indicating system information modification, immediately acquires a system information block including the second WUS configuration information;

[0322] if a second time is included in the system information block including the second WUS configuration information received from the second cell, uses the WUS configuration included in the system information block to perform transmission of a WUS to the first cell and / or reception of a RAR sent by the first cell and / or reception of an on-demand SIB1 sent by the first cell from the second time.

[0323] Embodiments of the present application also provide an apparatus for acquiring on-demand system information, configured in a terminal device. The apparatus of embodiments of the present application corresponds to the method of embodiments of the third aspect, and the same content as the embodiments of the third aspect will not be repeated.

[0324] FIG. 16 is a schematic diagram of an apparatus for acquiring on-demand system information according to an embodiment of the present application. As shown in FIG. 16, the apparatus for acquiring on-demand system information according to an embodiment of the present application includes:

[0325] a processing unit 1601, which, when acquiring a requested system information (SI) message or system information block (SIB) in a first cell, skips a request process and / or acquisition process of an on-demand SIB1, and acquires the requested system information (SI) message or system information block (SIB);

[0326] The first cell is a cell supporting or using an on-demand SIB1.

[0327] The embodiment of the present application further provides a cell selection device configured in a terminal device, and the device of the embodiment of the present application corresponds to the method of the embodiment of the fourth aspect, and the same content as the embodiment of the fourth aspect is not repeated.

[0328] FIG. 17 is a schematic diagram of a cell selection device according to an embodiment of the present application. As shown in FIG. 17, the cell selection device according to the embodiment of the present application comprises:

[0329] a processing unit 1701 configured to determine a suitable cell according to a default configuration, or according to an on-demand SIB1 of the first cell, or according to a second message sent by the first cell, when the terminal device is switched from an RRC connected state to an RRC idle state or an RRC inactive state in the first cell;

[0330] The first cell is a cell supporting or using an on-demand SIB1.

[0331] The embodiment of the present application further provides a sending device of an on-demand SSB transmission indication configured in a terminal device, and the device of the embodiment of the present application corresponds to the method of the embodiment of the fifth aspect, and the same content as the embodiment of the fifth aspect is not repeated.

[0332] FIG. 18 is a schematic diagram of a sending device of an on-demand SSB transmission indication according to an embodiment of the present application. As shown in FIG. 18, the sending device of an on-demand SSB transmission indication according to the embodiment of the present application comprises:

[0333] a receiving unit 1801 configured to receive a first MAC CE for indicating an on-demand SSB transmission indication, wherein the first MAC CE comprises at least one SCell index field and at least one ON-SSB configuration field; the SCell index field indicates an index of a secondary cell, and the ON-SSB configuration field indicates an on-demand SSB configuration of at least one secondary cell.

[0334] The above has exemplarily described the embodiments of the present application, but the present application is not limited thereto, and can be appropriately modified on the basis of the above various embodiments. For example, the above various embodiments can be used alone, or one or more of the above various embodiments can be combined.

[0335] It is worth noting that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The apparatuses 1500, 1600, 1700, and 1800 of the embodiments of the present application can further include other components or modules, and the specific content of these components or modules can be referred to the related technology. In addition, the above components or modules can be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc., and the present application is not limited thereto.

[0336] According to the embodiments of the present application, the terminal device in the second cell can help to keep the WUS configuration obtained from the second cell consistent with the WUS configuration in the first cell, avoid the problem that the on-demand SIB1 of the first cell cannot be obtained due to inconsistent WUS configurations, and the method is simple and easy to implement.

[0337] Embodiments of the seventh aspect

[0338] The embodiments of the present application further provide a communication system including a network device and a terminal device.

[0339] In the embodiments of the present application, the terminal device can include the apparatus shown in FIG. 16 of the embodiments of the sixth aspect and configured to perform the method of the embodiments of the third aspect; can also include the apparatus shown in FIG. 17 of the embodiments of the sixth aspect and configured to perform the method of the embodiments of the fourth aspect; and can further include the apparatus shown in FIG. 18 of the embodiments of the sixth aspect and configured to perform the method of the embodiments of the fifth aspect. Since the method has been described in detail in the embodiments of the third, fourth, and fifth aspects, the content is incorporated herein, and will not be repeated.

[0340] In the embodiments of the present application, the network device can include the apparatus shown in FIG. 15 of the embodiments of the sixth aspect and configured to perform the method of the embodiments of the first aspect; and can also be configured to perform the method of the embodiments of the second aspect. Since the method has been described in detail in the embodiments of the first and second aspects, the content is incorporated herein, and will not be repeated.

[0341] In addition, the terminal device and the network device can also perform respective conventional operations, and the network device can also perform operations corresponding to the operations of the terminal device, for example, the network device receives information / signals from the terminal device, and / or the network device sends information / signals to the terminal device, which is omitted here.

[0342] The embodiments of the present application further provide a terminal device, which can be a UE for example, but the present application is not limited thereto, and can also be other terminal devices.

[0343] FIG. 19 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in FIG. 19, the terminal device 1900 can include a processor 1901 and a memory 1902. The memory 1902 stores data and programs, and is coupled to the processor 1901. It is to be noted that this figure is exemplary; other types of structures can also be used to supplement or replace this structure to implement telecommunication functions or other functions.

[0344] In some embodiments, the functions of the apparatus 1500, 1600, 1700, 1800 according to the embodiments of the sixth aspect can be integrated into the processor 1901, wherein the processor 1901 can be configured to execute programs to implement the method according to the embodiments of the first aspect, the content of which is incorporated herein and will not be repeated here.

[0345] In some other embodiments, the apparatus 1500, 1600, 1700, 1800 according to the embodiments of the sixth aspect can be configured separately from the processor 1901, for example, the apparatus 1500, 1600, 1700, 1800 according to the embodiments of the sixth aspect can be configured as a chip connected to the processor 1901, and the functions of the apparatus 1500, 1600, 1700, 1800 according to the embodiments of the fourth aspect are implemented through the control of the processor 1901.

[0346] As shown in FIG. 19, the terminal device 1900 can further include a communication module 1903, an input unit 1904, a display 1905, and a power supply 1906. The functions of the above-mentioned components are similar to those of the prior art, and will not be repeated here. It is to be noted that the terminal device 1900 does not necessarily include all the components shown in FIG. 19, and the above-mentioned components are not essential; in addition, the terminal device 1900 can also include components not shown in FIG. 19, which can be referred to related art.

[0347] The embodiments of the present application also provide a network device, which can be a base station for example, but the present application is not limited thereto, and can also be other network devices.

[0348] FIG. 20 is a schematic diagram of a network device according to an embodiment of the present application. As shown in FIG. 20, the network device 2000 can include a processor 2001 and a memory 2002. The memory 2002 is coupled to the processor 2001. The memory 2002 can store various data; in addition, it also stores programs for information processing, and executes the programs under the control of the processor 1301.

[0349] In some embodiments, the functions of the apparatuses 1500, 1600, 1700, 1800 of the embodiments of the sixth aspect can be integrated into the processor 2001, where the processor 2001 can be configured to execute programs to realize the method of the embodiments of the second aspect, the content of which is incorporated herein and will not be repeated here.

[0350] In some other embodiments, the apparatuses 1500, 1600, 1700, 1800 of the embodiments of the sixth aspect can be configured separately from the processor 2001, for example, the apparatuses 1500, 1600, 1700, 1800 of the embodiments of the sixth aspect can be configured as a chip connected to the processor 2001, and realize the functions of the apparatus 2000, 1100 of the embodiments of the fourth aspect through the control of the processor 2001.

[0351] In addition, as shown in FIG. 20, the network device 2000 can further include transceivers 2003 and 2004. The functions of the above components are similar to those of the prior art, and will not be repeated here. It is worth noting that the network device 2000 does not necessarily include all the components shown in FIG. 20; in addition, the network device 2000 can also include components not shown in FIG. 20, which can be referred to the prior art.

[0352] The embodiments of the present application also provide a computer program, which, when executed in a terminal device, causes the terminal device to perform the method of the embodiments of the first aspect or the second aspect or the third aspect.

[0353] The embodiments of the present application also provide a storage medium storing a computer program, which causes a terminal device to perform the method of the embodiments of the first aspect or the second aspect or the third aspect.

[0354] The embodiments of the present application also provide a computer program, which, when executed in a network device, causes the network device to perform the method of the embodiments of the first aspect or the second aspect or the third aspect.

[0355] The embodiments of the present application also provide a storage medium storing a computer program, which causes a network device to perform the method of the embodiments of the first aspect or the second aspect or the third aspect.

[0356] The above apparatuses and methods of the present application can be realized by hardware, or by a combination of hardware and software. The present application relates to a computer readable program, which, when executed by a logic component, can enable the logic component to realize the above-described apparatuses or components, or to realize the various methods or steps described above. The present application also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, etc.

[0357] The method / apparatus described in conjunction with the embodiments of the present application can be directly embodied as hardware, software modules executed by a processor or a combination thereof. For example, one or more of the functional blocks shown in the figures and / or one or more combinations of the functional blocks can correspond to individual software modules of a computer program flow, and can also correspond to individual hardware modules. The software modules can correspond to individual steps shown in the figures, respectively. The hardware modules can be implemented by, for example, fixing the software modules with a field programmable gate array (FPGA).

[0358] The software modules can be located in the RAM memory, the flash memory, the ROM memory, the EPROM memory, the EEPROM memory, the register, the hard disk, the mobile disk, the CD-ROM, or any other form of storage medium known in the art. One storage medium can be coupled to the processor, so that the processor can read information from and write information to the storage medium; or the storage medium can be an integral part of the processor. The processor and the storage medium can be located in an ASIC. The software modules can be stored in the memory of the mobile terminal, or in a memory card that can be inserted into the mobile terminal. For example, if the device (e.g., the mobile terminal) uses a MEGA-SIM card or a large-capacity flash memory device, the software modules can be stored in the MEGA-SIM card or the large-capacity flash memory device.

[0359] One or more of the functional blocks shown in the figures and / or one or more combinations of the functional blocks can be implemented as a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any appropriate combination thereof, for performing the functions described in the present application. One or more of the functional blocks shown in the figures and / or one or more combinations of the functional blocks can also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in communication with a DSP core, or any other such configuration.

[0360] The present application has been described above with reference to specific embodiments. However, it should be understood by those skilled in the art that the description is merely exemplary and not limiting. Various modifications and changes can be made to the present application by those skilled in the art based on the spirit and principles of the present application, and such modifications and changes are within the scope of the present application.

[0361] With respect to the embodiments including the above embodiments, the following supplementary notes are also disclosed:

[0362] 1. An apparatus for on-demand SSB transmission indication configured to a terminal device, wherein the apparatus comprises:

[0363] a receiving unit configured to receive a first MAC CE for indicating on-demand SSB transmission indication, the first MAC CE comprising at least one SCell index field and at least one ON-SSB configuration field; the SCell index field indicating an index of a SCell, the ON-SSB configuration field indicating an on-demand SSB configuration of at least one SCell.

[0364] 2. The apparatus of any one of the preceding clauses, wherein,

[0365] the first MAC CE is of fixed length, comprising K pairs of SCell index and the SCell related ON-SSB configuration, K being a positive integer.

[0366] 3. The apparatus of any one of the preceding clauses, wherein,

[0367] the K is predefined or configured by a network device.

[0368] 4. The apparatus of any one of the preceding clauses, wherein,

[0369] the SCell index field is of 3 bits or 5 bits in length;

[0370] the ON-SSB configuration field is of 3 bits or 5 bits or 8 bits in length.

[0371] 5. The apparatus of any one of the preceding clauses, wherein,

[0372] the ON-SSB configuration field comprises a periodicity of on-demand SSB.

[0373] 6. The apparatus of any one of the preceding clauses, wherein,

[0374] the first MAC CE is of variable length, comprising a bitmap for indicating a status of on-demand SSB configuration of a SCell.

[0375] 7. The apparatus of any one of the preceding clauses, wherein,

[0376] the bitmap is of 8 bits or 32 bits in length.

[0377] 8. The apparatus of any one of the preceding clauses, wherein,

[0378] The length of the on-demand SSB configuration field is 3 bits or 8 bits.

[0379] 9. A terminal device comprising a memory and a processor, the memory storing a computer program, the processor being configured to execute the computer program to implement the method as follows:

[0380] acquiring a requested system information (SI) message or system information block (SIB) while skipping a request procedure and / or an acquisition procedure of an on-demand SIB1 in a first cell; the first cell being a cell supporting or using an on-demand system information block type 1 (on-demand SIB1);

[0381] or,

[0382] when the terminal device moves from an RRC connected state to an RRC idle state or an RRC inactive state in a first cell, determining a suitable cell according to a default configuration or according to an on-demand SIB1 of the first cell or according to a second message transmitted by the first cell; the first cell being a cell supporting or using an on-demand system information block type 1 (on-demand SIB1);

[0383] or,

[0384] receiving a first MAC CE for indicating an on-demand SSB transmission indication, the first MAC CE comprising at least one secondary cell index (SCell index) field and at least one on-demand SSB configuration (ON-SSB configuration) field; the secondary cell index field indicating an index of a secondary cell, the on-demand SSB configuration field indicating an on-demand SSB configuration of at least one secondary cell.

[0385] 10. A communication system comprising a network device and a terminal device, wherein,

[0386] the network device is configured to perform the following processing:

[0387] after determining an updated wake-up signal (WUS) configuration, transmitting first WUS configuration information to a second cell, the first WUS configuration information comprising the updated WUS configuration; the first cell being a cell supporting or using an on-demand system information block type 1 (on-demand SIB1), the second cell being a cell assisting an on-demand SIB1 procedure of the first cell;

[0388] and / or,

[0389] The terminal device is configured to perform at least one of the following processes:

[0390] acquiring a requested system information (SI) message or system information block (SIB) while skipping a request procedure and / or an acquisition procedure of an on-demand SIB1 when acquiring the requested system information (SI) message or system information block (SIB) in a first cell; the first cell is a cell supporting or using an on-demand system information block type 1 (on-demand SIB1);

[0391] or,

[0392] determining a suitable cell according to a default configuration or according to an on-demand SIB1 of a first cell or according to a second message transmitted by the first cell when the terminal device moves from an RRC connected state to an RRC idle state or an RRC inactive state in the first cell; the first cell is a cell supporting or using an on-demand system information block type 1 (on-demand SIB1);

[0393] or,

[0394] receiving a first MAC CE for indicating an on-demand SSB transmission indication, the first MAC CE comprising at least one secondary cell index (SCell index) field and at least one on-demand SSB configuration (ON-SSB configuration) field; the secondary cell index field indicates an index of a secondary cell, and the on-demand SSB configuration field indicates an on-demand SSB configuration of at least one secondary cell.

Claims

1. An apparatus for configuring a wake-up signal, configured in a first cell, wherein, The apparatus comprises: a sending unit configured to send, to a second cell, first wake-up signal (WUS) configuration information including an updated WUS configuration after determining the updated WUS configuration; the first cell is a cell supporting or using on-demand system information block type 1 (on-demand SIB1), and the second cell is a cell assisting the on-demand SIB1 procedure of the first cell.

2. The apparatus according to claim 1, wherein the first WUS configuration information includes a validity time of the updated WUS configuration, and the second cell sends, to terminal devices served thereby, second WUS configuration information including the updated WUS configuration according to the validity time.

3. The apparatus according to claim 2, wherein the validity time is related to a time instant at which the sending unit sends, to terminal devices served thereby, third WUS configuration information including the updated WUS configuration.

4. The apparatus according to claim 1, wherein the sending unit sends, to the second cell, the first WUS configuration information at a first time instant, the first time instant is related to a sending time instant at which the sending unit sends, to terminal devices served thereby, third WUS configuration information, and the second cell sends, to terminal devices served thereby, second WUS configuration information according to the first time instant, the second WUS configuration information and the third WUS configuration information including the updated WUS configuration.

5. The apparatus of claim 4, wherein, the first time instant is at least one of: a time instant of a boundary of a next modification period of the first cell or before the time instant; a time instant at which the first cell broadcasts a system information block including the third WUS configuration information or before the time instant; a starting time instant of a system information window in which the first cell broadcasts a system information block including the third WUS configuration information or before the starting time instant.

6. The apparatus according to claim 1, wherein the sending unit sends, to the second cell, indication information indicating that the first cell broadcasts updated WUS configuration information in a system information block thereof at a second time instant, and the second cell sends, to terminal devices served thereby, second WUS configuration information according to the indication information, the second WUS configuration information including the updated WUS configuration.

7. The apparatus of claim 6, wherein, the second time instant is at least one of: a time instant of a boundary of a next modification period of the first cell or before the time instant; a time instant at which the first cell broadcasts a system information block including the third WUS configuration information or before the time instant; a starting time instant of a system information window in which the first cell broadcasts a system information block including the third WUS configuration information or before the starting time instant.

8. The apparatus according to claim 1, wherein a modification period of the first cell and a modification period of the second cell have a certain relationship in time.

9. The apparatus according to claim 8, wherein The size of the modification period of the first cell is indicated by a distribution unit (DU) of a network device to which the first cell belongs to a centralized unit (CU) of the network device, and / or is indicated by the CU of the network device to which the first cell belongs to a CU of a network device to which the second cell belongs; and / or, the size of the modification period of the second cell is indicated by a DU of a network device to which the second cell belongs to a CU of the network device, and / or is indicated by the CU of the network device to which the second cell belongs to a CU of the network device to which the first cell belongs; or, The relationship between the modification period of the first cell and the modification period of the second cell in time is configured by operation management and maintenance (OAM).

10. The apparatus of claim 1, wherein, The second cell sends a message indicating system information modification to a terminal device served by the second cell after receiving the first WUS configuration information.

11. The apparatus of claim 10, wherein, The second cell further performs at least one of the following operations: The 1-bit indication of the system information block change or the WUS configuration information change is used in the sent message indicating system information modification; The system information block including the second WUS configuration information is broadcasted starting at the time indicated by the validity time of the updated WUS configuration; The system information block including the second WUS configuration information is broadcasted and a second time information is included in the system information block, the second time information is the validity time, or is the validity time minus a time difference from receiving the first WUS configuration information to broadcasting the system information block; The system information block including the second WUS configuration information is broadcasted starting at the next modification period of the second cell or a modification period containing the validity time; In the case of receiving the indication information sent by the first cell, the system information block including the second WUS configuration information is broadcasted, and the indication information indicates that the first cell broadcasts the updated WUS configuration information in its system information block; The CU of the network device to which the second cell belongs indicates the above operations to the DU of the network device to which the second cell belongs. The second WUS configuration information includes the updated WUS configuration. The terminal device served by the second cell further performs at least one of the following operations:

12. The apparatus of claim 11, wherein, Starting from the next modification period of the second cell, the system information block including the second WUS configuration information is acquired, thereby obtaining the updated WUS configuration; After receiving the message indicating system information modification sent by the second cell, the system information block type 1 (SIB1) is immediately acquired, and in the case that the value tag corresponding to the system information block including the second WUS configuration information indicated by the SIB1 changes, the system information block is immediately acquired; Upon receiving the message indicating system information modification, the system information block including the second WUS configuration information is immediately acquired; ​ if a second time is included in a system information block including the second WUS configuration information received from the second cell, using the WUS configuration included in the system information block for transmission of a WUS to the first cell and / or reception of a random access response (RAR) transmitted by the first cell and / or reception of an on-demand SIB1 transmitted by the first cell, starting from the second time.

13. A device for acquiring on-demand system information, applied to a terminal device, wherein, The apparatus comprises: a processing unit, when acquiring a requested system information (SI) message or system information block (SIB) in a first cell, skipping a request procedure and / or an acquisition procedure of an on-demand SIB1, acquiring the requested system information (SI) message or system information block (SIB); the first cell is a cell supporting or using an on-demand system information block type 1 (on-demand SIB1).

14. The apparatus according to claim 13, wherein the acquiring means considers that the requested SI message or SIB is not being broadcasted in the first cell.

15. The apparatus according to claim 13, wherein the acquiring means considers that the requested SI message or SIB is being broadcasted in the first cell.

16. The apparatus according to claim 13, wherein the processing unit acquires the requested SI message or SIB from the first cell, and in case that the requested SI message or SIB is not acquired, initiates an on-demand SI request procedure to acquire the requested SI message or SIB.

17. The apparatus according to claim 13, wherein the processing unit determines, according to a broadcast status of the requested SI message or SIB, whether to perform an on-demand SI request procedure to acquire the requested SI message or SIB or to acquire the requested SI message or SIB directly.

18. A cell selection apparatus applied to a terminal device, wherein, The apparatus comprises: a processing unit, when moving from a radio resource control (RRC) connected state to an RRC idle state or an RRC inactive state in a first cell, determining a suitable cell according to a default configuration or according to an on-demand system information block type 1 (on-demand SIB1) of the first cell or according to a second message transmitted by the first cell; the first cell is a cell supporting or using an on-demand system information block type 1 (on-demand SIB1).

19. The apparatus according to claim 18, wherein the processing unit receives a first message transmitted by the first cell when in the RRC connected state, the first message including the on-demand SIB1 of the first cell; the processing unit determines a suitable cell according to the on-demand SIB1 of the first cell included in the first message when moving from the RRC connected state to the RRC idle state or the RRC inactive state.

20. The apparatus according to claim 18, wherein The stored on-demand SIB1 of the first cell is an on-demand SIB1 of the first cell acquired by the cell selection apparatus previously in a cell selection or cell reselection procedure. The stored on-demand SIB1 of the first cell is an on-demand SIB1 of the first cell acquired by the cell selection apparatus previously in a cell selection or cell reselection procedure.

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