Method and apparatus for wireless communication

Abstract

Provided are a method and apparatus for wireless communication. The method comprises: a first terminal device sends a first request, wherein the first request is used for requesting a first SIB of a first cell; and the first terminal device receives the first SIB and / or configuration information of the first SIB, wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB comprises an SIB1 of the first cell.

Description

Method and apparatus for wireless communication TECHNICAL FIELD

[0001] The present application relates to the technical field of communication, and more particularly, to a method and apparatus for wireless communication. BACKGROUND

[0002] In order to serve terminal devices, a network device usually periodically transmits system information blocks (SIBs). However, in scenarios such as that the terminal device has no demand or the cell has no terminal device camping, the periodic transmission of SIBs by the network device causes great energy waste. Therefore, how to perform on-demand transmission of SIBs to achieve network energy saving becomes a technical problem to be solved urgently.

[0003] SUMMARY

[0004] The present application provides a method and apparatus for wireless communication. The following introduces each aspect of the embodiments of the present application.

[0005] In a first aspect, a method for wireless communication is provided, comprising: a first terminal device transmitting a first request, the first request being used for requesting a first SIB of a first cell; and the first terminal device receiving the first SIB and / or configuration information of the first SIB; wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB comprises SIB1 of the first cell.

[0006] In a second aspect, a method for wireless communication is provided, comprising: a first network device corresponding to a first cell receiving a first request transmitted by a first terminal device, or receiving a second request transmitted by a second network device corresponding to a second cell, the first request being used for requesting a first SIB of the first cell, and the second request being determined according to the first request; and the first network device transmitting the first SIB and / or configuration information of the first SIB to the first terminal device; wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB comprises SIB1 of the first cell.

[0007] In a third aspect, a method for wireless communication is provided, comprising: a second network device corresponding to a second cell receiving a first request transmitted by a first terminal device, the first request being used for requesting a first SIB of a first cell; and the second network device transmitting configuration information of the first SIB to the first terminal device; wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB comprises SIB1 of the first cell.

[0008] In a fourth aspect, a method for wireless communication is provided, including: receiving, by a second terminal device, a first request sent by a first terminal device, the first request being used for requesting a first SIB of a first cell; and sending, by the second terminal device, configuration information of the first SIB to the first terminal device, wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB includes a SIB1 of the first cell.

[0009] In a fifth aspect, an apparatus for wireless communication is provided, the apparatus being a first terminal device, and the apparatus including: a sending unit configured to send a first request, the first request being used for requesting a first SIB of a first cell; and a receiving unit configured to receive the first SIB and / or configuration information of the first SIB, wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB includes a SIB1 of the first cell.

[0010] In a sixth aspect, an apparatus for wireless communication is provided, the apparatus being a first network device corresponding to a first cell, and the apparatus including: a receiving unit configured to receive a first request sent by a first terminal device or a second request sent by a second network device corresponding to a second cell, the first request being used for requesting a first SIB of the first cell, and the second request being determined according to the first request; and a sending unit configured to send the first SIB and / or configuration information of the first SIB to the first terminal device, wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB includes a SIB1 of the first cell.

[0011] In a seventh aspect, an apparatus for wireless communication is provided, the apparatus being a second network device corresponding to a second cell, and the apparatus including: a receiving unit configured to receive a first request sent by a first terminal device, the first request being used for requesting a first SIB of a first cell; and a sending unit configured to send configuration information of the first SIB to the first terminal device, wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB includes a SIB1 of the first cell.

[0012] In an eighth aspect, an apparatus for wireless communication is provided, the apparatus being a second terminal device, and the apparatus including: a receiving unit configured to receive a first request sent by a first terminal device, the first request being used for requesting a first SIB of a first cell; and a sending unit configured to send configuration information of the first SIB to the first terminal device, wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB includes a SIB1 of the first cell.

[0013] In a ninth aspect, a communication apparatus is provided, which comprises a memory and a processor, the memory is configured to store a program, and the processor is configured to invoke the program in the memory to execute the method in any one of the first aspect to the fourth aspect.

[0014] In a tenth aspect, an apparatus is provided, which comprises a processor configured to invoke a program from a memory to execute the method in any one of the first aspect to the fourth aspect.

[0015] In an eleventh aspect, a chip is provided, which comprises a processor configured to invoke a program from a memory to enable a device installed with the chip to execute the method in any one of the first aspect to the fourth aspect.

[0016] In a twelfth aspect, a computer readable storage medium is provided, which has a program stored thereon, and the program causes a computer to execute the method in any one of the first aspect to the fourth aspect.

[0017] In a thirteenth aspect, a computer program product is provided, which comprises a program, and the program causes a computer to execute the method in any one of the first aspect to the fourth aspect.

[0018] In a fourteenth aspect, a computer program is provided, which causes a computer to execute the method in any one of the first aspect to the fourth aspect.

[0019] The first terminal device in the embodiments of the present application receives the first SIB of the first cell only after sending the first request for requesting the first SIB. The first SIB contains SIB1. It can be seen that the SIB1 received by the first terminal device is not periodically sent, but is sent according to the request of the first terminal device. Therefore, the network device corresponding to the first cell can send SIB1 on demand, thereby realizing network energy saving. BRIEF DESCRIPTION OF DRAWINGS

[0020] FIG. 1 is a wireless communication system to which the embodiments of the present application are applied.

[0021] FIG. 2 is a flow diagram of a method for wireless communication provided by the embodiments of the present application.

[0022] FIG. 3 is a possible diagram of the method shown in FIG. 2 applied to a single cell scenario.

[0023] FIG. 4 is a possible flow diagram of the scenario shown in FIG. 3.

[0024] FIG. 5 is another possible flow diagram of the scenario shown in FIG. 3.

[0025] FIG. 6 is a possible diagram of the method shown in FIG. 2 applied to a multi-cell scenario.

[0026] Fig. 7 is a possible flow diagram of the scenario shown in Fig. 6.

[0027] Fig. 8 is a schematic diagram of a possible implementation of the method shown in Fig. 2.

[0028] Fig. 9 is a schematic diagram of the structure of an apparatus for wireless communication provided by an embodiment of the application.

[0029] Fig. 10 is a schematic diagram of the structure of another apparatus for wireless communication provided by an embodiment of the application.

[0030] Fig. 11 is a schematic diagram of the structure of yet another apparatus for wireless communication provided by an embodiment of the application.

[0031] Fig. 12 is a schematic diagram of the structure of yet another apparatus for wireless communication provided by an embodiment of the application.

[0032] Fig. 13 is a schematic diagram of the structure of a communication apparatus provided by an embodiment of the application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Any other embodiments obtained by those of ordinary skill in the art without creative effort based on the embodiments in the present application are within the scope of protection of the present application.

[0034] The embodiments of the present application can be applied to various communication systems. For example, the embodiments of the present application can be applied to a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) system, a general packet radio service (GPRS) system, a long term evolution (LTE) system, an advanced long term evolution (LTE-A) system, a new radio (NR) system, an evolved system of the NR system, an LTE-based access to unlicensed spectrum (LTE-U) system, an NR-based access to unlicensed spectrum (NR-U) system, a universal mobile telecommunication system (UMTS), a wireless local area networks (WLAN) system, a wireless fidelity (WiFi) system, a 5th-generation (5G) system. The embodiments of the present application can also be applied to other communication systems, for example, a 6th-generation (6G) mobile communication system, or a future communication system such as a satellite communication system.

[0035] The conventional communication system supports a limited number of connections, which is easy to implement. However, with the development of communication technology, the communication system can not only support traditional cellular communication, but also support one or more types of other types of communication. For example, the communication system can support one or more of the following communications: device to device (D2D) communication, machine to machine (M2M) communication, machine type communication (MTC), enhanced MTC (eMTC), vehicle to vehicle (V2V) communication, and vehicle to everything (V2X) communication, and the like. The embodiments of the present application can also be applied to a communication system supporting the above communication modes.

[0036] The communication system in the embodiments of the present application can be applied to a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, and a standalone (SA) network deployment scenario.

[0037] The communication system in the embodiments of the present application can be applied to unlicensed spectrum. The unlicensed spectrum can also be considered as shared spectrum. Alternatively, the communication system in the embodiments of the present application can also be applied to licensed spectrum. The licensed spectrum can also be considered as dedicated spectrum.

[0038] The embodiments of the present application can be applied to a non-terrestrial network (NTN) system. As an example, the NTN system can be a 4G-based NTN system, an NR-based NTN system, an internet of things (IoT)-based NTN system, or a narrow band internet of things (NB-IoT)-based NTN system.

[0039] The communication system can include one or more terminal devices. The terminal device mentioned in the embodiments of the present application can also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment, etc.

[0040] In some embodiments, the terminal device can be a station (STATION, ST) in a WLAN. In some embodiments, the terminal device can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA) device, a handheld device having wireless communication function, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a next-generation communication system (e.g., an NR system), or a terminal device in a future evolved public land mobile network (PLMN) network, etc.

[0041] In some embodiments, the terminal device can be a device that provides voice and / or data connectivity to a user. For example, the terminal device can be a handheld device having wireless connection function, an in-vehicle device, etc. As some specific examples, the terminal device can be a mobile phone, a Pad, a notebook computer, a palmtop computer, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, etc.

[0042] In some embodiments, the terminal device can be deployed on land. For example, the terminal device can be deployed indoors or outdoors. In some embodiments, the terminal device can be deployed on water surface, such as on a ship. In some embodiments, the terminal device can be deployed in air, such as on an airplane, a balloon, and a satellite.

[0043] In addition to the terminal device, the communication system can also include one or more network devices. The network device in the embodiments of the present application can be a device for communicating with the terminal device, which can also be referred to as an access network device or a radio access network device. The network device can be, for example, a base station. The network device in the embodiments of the present application can refer to a radio access network (RAN) node (or device) that accesses the terminal device to the wireless network. The base station can broadly cover various names in the following or be replaced by the following names, such as: Node B (NodeB), evolved Node B (eNB), next generation Node B (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master station (MeNB), auxiliary station (SeNB), multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. The base station can also refer to a communication module, modem, or chip used in the aforementioned devices or apparatuses. The base station can also be a mobile switching center and a device that performs the function of a base station in D2D, V2X, M2M communication, a network side device in a 6G network, a device that performs the function of a base station in a future communication system, etc. The base station can support networks of the same or different access technologies. The embodiments of the present application do not limit the specific technology and specific device form adopted by the network device.

[0044] The base station can be fixed or mobile. For example, a helicopter or a drone can be configured to act as a mobile base station, and one or more cells can move according to the location of the mobile base station. In other examples, a helicopter or a drone can be configured to act as a device that communicates with another base station.

[0045] In some deployments, the network device in the embodiments of the present application can refer to a CU or a DU, or the network device includes a CU and a DU. The gNB can also include an AAU.

[0046] By way of example and not limitation, in embodiments of the present application, a network device can have a mobile characteristic, for example, the network device can be a mobile device. In some embodiments of the present application, the network device can be a satellite, a balloon station. In some embodiments of the present application, the network device can also be a base station disposed at a location on land, water, etc.

[0047] In embodiments of the present application, a network device can serve a cell, and a terminal device communicates with the network device through a transmission resource (for example, a frequency domain resource, or a spectrum resource) used by the cell. The cell can be a cell corresponding to the network device (for example, a base station), and the cell can belong to a macro base station or a base station corresponding to a small cell. The small cell can include a metro cell, a micro cell, a pico cell, a femto cell, etc., and these small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.

[0048] By way of example, FIG. 1 is a schematic diagram of an architecture of a communication system provided in embodiments of the present application. As shown in FIG. 1, the communication system 100 can include a network device 110, which can be a device that communicates with a terminal device 120 (or a communication terminal, a terminal). The network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located in the coverage area.

[0049] FIG. 1 exemplarily shows one network device and two terminal devices. In some embodiments of the present application, the communication system 100 can include multiple network devices, and each network device can include other numbers of terminal devices within its coverage, which is not limited.

[0050] In embodiments of the present application, the communication system shown in FIG. 1 can also include a mobility management entity (MME), an access and mobility management function (AMF), and other network entities, which are not limited in embodiments of the present application.

[0051] It should be understood that the devices with communication functions in the network / system in the embodiments of the present application can be referred to as communication devices. For example, the communication system 100 shown in FIG. 1 can include network devices 110 and terminal devices 120 with communication functions, which can be specific devices as described above, and details are not described herein again. The communication devices can also include other devices in the communication system 100, such as network controllers, mobile management entities, and other network entities, which are not limited in the embodiments of the present application.

[0052] For ease of understanding, some related technical knowledge related to the embodiments of the present application is introduced first. The following related technologies can be combined with the technical solutions of the embodiments of the present application as optional schemes, which all belong to the protection scope of the embodiments of the present application. The embodiments of the present application include at least part of the following contents.

[0053] With the development of mobile communication technology, a new generation of wireless evolution system (for example, a 5G system) improves the transmission rate of data through multiple technologies to meet the transmission demand of large data volume such as high-definition video and virtual reality. Multiple technologies such as multiple-input multiple-output (MIMO) technology, non-orthogonal multiple access technology, simultaneous same frequency full duplex communication technology, new modulation technology, new coding technology, and high-order modulation technology. Through these technologies, the peak rate can reach Gbit / s.

[0054] As an example, the delay level of the air interface needs to be around 1ms to meet the real-time application of automatic driving, remote medical treatment, etc.

[0055] As an example, the network capacity is super large, which can provide the connection ability of hundreds of billions of devices to meet the communication demand of the Internet of Things.

[0056] As an example, the spectral efficiency of the NR system is more than 10 times higher than that of the LTE system. Based on continuous wide area coverage and high mobility, the user's experience rate can reach 100 Mbit / s. Therefore, the traffic density and the connection number density are greatly improved.

[0057] In addition, the improvement of system coordination and intelligence level further improves the flexibility of the network. System coordination can be manifested as the coordinated networking of multiple users, multiple points, multiple antennas, and multiple cameras. Based on coordination and intelligence, the network can be automatically adjusted flexibly between networks.

[0058] However, in the communication system, the power consumption of the network device (for example, the base station device) is usually relatively high. In order to save the power consumption of the base station device, the system message needs to be optimized. For ease of understanding, the system message of the NR is taken as an example for description.

[0059] The system information of the NR can be divided into a master information block (MIB) message and some SIB messages. The MIB message is usually transmitted on a broadcast channel (BCH). The transmission period of the MIB is 80 ms. The MIB can be repeatedly transmitted within the 80 ms period. In addition, the MIB message also includes parameters required by the terminal device to acquire the SIB1 message from the cell.

[0060] The SIB1 message can also be referred to as a SIB type 1 message. The SIB1 is transmitted on a downlink-shared channel (DL-SCH) with a period of 160 ms. Within 160 ms, the SIB can also be repeatedly transmitted with a variable transmission repetition period. The default transmission repetition period of the SIB1 is 20 ms, and the actual transmission repetition period depends on the network implementation. For example, for the multiplexing mode 1 of the synchronization signal block (SSB) and the control resource set (CORESET), the transmission repetition period of the SIB1 is 20 ms. For example, for the multiplexing mode 2 / 3 of the SSB and the CORESET, the transmission repetition period of the SIB1 is the same as the period of the SSB.

[0061] In the embodiments of the present application, the SSB can also represent a synchronization signal and PBCH block.

[0062] The SIB1 can carry the key information required by the terminal device to access the cell, such as random access parameters. The SIB1 can also carry information related to the availability and scheduling of other SIBs, such as the mapping of other SIBs to system information (SI) messages, periodicity, SI window size, etc. The SIB1 can also indicate whether one or more SIBs are provided on demand only, in which case the SIB1 can also provide the physical random access channel (PRACH) configuration required by the terminal device to request the SI required by the terminal device. The SIB1 also contains radio resource configuration information common to all terminal devices and cell barring information applied to unified access control.

[0063] When SIB1 includes the related information of other SIBs, the other SIB messages can be provided by periodic broadcast or on-demand. If the other SIBs are provided on-demand, SIB1 can include information for the terminal device to perform a system information (SI) request.

[0064] SIB messages other than SIB1 (other SIBs) can be included in SI messages. These messages can also be transmitted on a DL-SCH. Each SI message can be periodically transmitted within a time domain window (referred to as an SI window). Only SIBs with the same periodicity can be mapped to the same SI message. Each SI message is sent within a periodically occurring time domain window (all SI messages can have the same length of SI window). Each SI message is associated with one SI window, and the SI windows of different SI messages do not overlap. That is, only the corresponding SI message is sent within one SI window. In addition, the system can send the SI message multiple times within the SI window.

[0065] The above describes various SIB messages taking the system message of NR as an example. The network device (for example, gNB) can periodically send SIB1 for initial access, and schedule other SIBs of the terminal device in an idle / inactive mode. Even if there is no demand from the terminal device, or there is no terminal device camping on the cell, the network device will always transmit. Therefore, in some scenarios, the periodic transmission of SIB1 by the network device can cause a large energy waste.

[0066] In order to realize network energy saving, unnecessary SIB1 transmission and associated PRACH monitoring need to be reduced. Therefore, on-demand SIB1 for terminal devices in an idle state / inactive state needs to be studied, so as to provide more opportunities for the network device to sleep.

[0067] However, how to realize the transmission of on-demand SIB1 to save the energy of the network device is a technical difficulty worthy of study.

[0068] It should be noted that the above-mentioned energy waste problem caused by the periodic transmission of SIB1 by the network device is only an example, and the embodiments of the present application can be applied to any type of communication scenario in which the communication device causes energy waste due to periodic transmission of messages.

[0069] To solve the above problems, the embodiment of the present application provides a method for wireless communication. Through the method, the first terminal device receives the first SIB only after sending the first request for requesting the first SIB, thereby accessing the first cell. On the network side, the network device does not need to periodically send the first SIB, but sends the first SIB on demand according to the request of the first terminal device. Therefore, the related device on the network side can be in the sleep mode or the inactive mode for a longer time, thereby achieving effective energy saving on the network side.

[0070] To facilitate understanding, the method provided by the embodiment of the present application is described in detail below in combination with FIG. 2. FIG. 2 is introduced from the perspective of the interaction between the first terminal device and the second device. The dashed line indicates that the second device is not a specific device, but an optional communication device.

[0071] Referring to FIG. 2, in step S210, the first terminal device sends a first request.

[0072] The first terminal device can be any terminal device that requests the first SIB, which is not limited herein. In some embodiments, the first terminal device can be a terminal device in an idle state or an inactive state. For example, the first terminal device is a UE in an idle / inactive mode.

[0073] In some embodiments, the first terminal device is a device supporting a network energy saving (NES) function.

[0074] The service cell corresponding to the first terminal device is the first cell. In other words, the cell in which the first terminal device is located is the first cell, or the network device corresponding to the first cell can provide services for the first terminal device.

[0075] In some embodiments, only the first cell exists in the vicinity of the area in which the first terminal device is located, that is, the first terminal device is in a single-cell scenario. For example, in FIG. 3, the terminal device 310 is a first terminal device in a single-cell scenario, and the first cell is a cell A (Cell#A) in FIG. 3. In FIG. 3, the network device 320 corresponding to the first cell can provide services for the terminal device 310.

[0076] In some embodiments, the area in which the first terminal device is located includes multiple cells in the vicinity, and the multiple cells include the first cell. That is, the multiple cells including the first cell are associated with the first terminal device, and therefore, the first terminal device is in a multi-cell scenario. In this scenario, at least part of the multiple cells can respectively provide services for the first terminal device through corresponding network devices. For example, the first terminal device can receive information broadcasted by at least part of the network devices corresponding to the at least part of the multiple cells.

[0077] As an example, the plurality of cells associated with the first terminal device are within one area. The area is, for example, a specific geographical area.

[0078] As an example, the plurality of cells associated with the first terminal device are within one tracking area (TA). The plurality of cells can correspond to the same tracking area code (TAC) or tracking area identity (TAI).

[0079] The following will exemplarily illustrate the multi-cell scenario by taking FIG. 6 as an example. Referring to FIG. 6, the terminal device 610 is a first terminal device in a multi-cell scenario. The plurality of cells associated with the first terminal device are cell A, cell B (Cell#B), cell C (Cell#C), and cell D (Cell#D). Among them, the cell B in which the first terminal device is located is a first cell.

[0080] The network device corresponding to the first cell is a first network device. The first cell can provide services for the first terminal device through the corresponding first network device. The first network device can be any one of the network devices described in the foregoing, which is not limited here.

[0081] In the embodiments of the present application, the transmission / reception performed by any cell can be represented as the transmission / reception performed by the network device corresponding to the cell, or the transmission / reception performed by the network device corresponding to the cell.

[0082] In some embodiments, the first cell can be a cell that needs to implement energy saving on the network side. The cell can be any one of the cells described in the foregoing, which is not limited here. The energy saving that needs to be implemented on the network side can include energy saving of the network device, and can also include energy saving of the core network. Alternatively, the first cell can be an NES cell, or a network energy saving cell with similar functions.

[0083] As an example, the PBCH or MIB in the SSB usually provides the parameter set of SIB1 transmission, the search space, and the corresponding CORESET of SIB1 scheduling. In the CORESET, the terminal device can listen to the scheduling of SIB1 according to the indication of the special system message SI radio network temporary identifier (SI-RNTI). However, in the related technical solution of on-demand SIB1 (the first cell), the PBCH / MIB will not provide the parameter set of SIB1 transmission and / or the configuration of SIB1, nor will it provide the search space and the corresponding CORESET of SIB1 scheduling, so as to achieve energy saving on the network side.

[0084] For example, for the first terminal device in idle / inactive mode, the cell sending SIB1 on-demand can be a NES cell.

[0085] As an example, in a multi-cell scenario, the plurality of cells can include one or more NES cells and at least one non-NES cell. The one or more NES cells include the first cell. The non-NES cell has a relatively lower energy saving requirement compared to the NES cell. Optionally, the non-NES cell can also be considered as a legacy cell.

[0086] As an example, the non-NES cell can assist the first terminal device to acquire the related SIB of the first cell. When the non-NES cell is used by the first terminal device to acquire the first SIB, the non-NES cell can also be referred to as an assisting cell or an anchor cell.

[0087] As an example, the plurality of cells can include one anchor cell and a plurality of non-anchor cells (i.e., NES cells). For example, in the plurality of cells shown in FIG. 6, one anchor cell (cell A) and a plurality of non-anchor cells (cell B, cell C and cell D) are included.

[0088] Optionally, the second cell can be any other cell in the same tracking area as the first cell.

[0089] Optionally, the second cell can be a non-NES cell (anchor cell) in the plurality of cells associated with the first terminal device.

[0090] Optionally, when the second cell is an assisting cell, the second cell can be a neighboring cell around the first cell or a secondary cell that can be used for carrier aggregation. As an example, in a multi-cell scenario, the first terminal device can use the assisting cell to request the first SIB.

[0091] As an example, the second cell can provide the idle / inactive terminal device with the related information of the first SIB, which is usually provided in the system information of the first cell or in a dedicated signaling for the idle / inactive terminal device to receive. In the embodiments of the present application, the system information sent by the second cell can include the information required by the first SIB of the first cell (NES cell).

[0092] In some embodiments, the first terminal device can send a first request to a second device, as shown in FIG. 2. The second device can be any of a plurality of devices that can communicate with the first terminal device.

[0093] As an example, the second device can be a first network device corresponding to the first cell. The first terminal device can communicate with the first network device through resources of the first cell. For example, the second device can be the network device 320 in FIG. 3 or the network device 630 in FIG. 6.

[0094] Optionally, the first terminal device can send the first request to the first network device directly. For example, the terminal device 310 (the first terminal device) in FIG. 3 can send the first request to the network device 320 (the first network device) through the uplink 301. As another example, the terminal device 610 in FIG. 6 can send the first request to the network device 630 through the uplink 604.

[0095] As an example, the first network device can send a periodic SSB, which does not contain configuration information of the SIB1.

[0096] As an example, the first network device can also monitor the first request and respond in time. That is, even if the first cell is in the sleep mode, the first request sent by the terminal device is monitored.

[0097] As an example, the first network device can receive the first request sent by the first terminal device. The communication between the first terminal device and the first network device will be described exemplarily in combination with FIG. 4 and FIG. 5.

[0098] As an example, the second device can be a network device corresponding to another cell associated with the first cell. The another cell associated with the first cell includes a second cell. The first terminal device can communicate with a second network device corresponding to the second cell through resources of the second cell. The second network device can be any network device described above. For example, the second device can be the network device 620 in FIG. 6.

[0099] Optionally, the first terminal device can send the first request to the second network device to request the second cell to assist it in acquiring the first SIB. For example, in FIG. 6, the terminal device 610 can send the first request to the network device 620 through the uplink 602.

[0100] Optionally, the second network device can send a second request to the first network device to trigger the first cell to respond to the first request of the first terminal device. The second request can be determined according to the first request. For example, the second request can include or be the first request.

[0101] As an example, the first network device can send configuration information of the first SIB to the second network device. The configuration information of the first SIB will be described in detail in combination with step S220.

[0102] Exemplarily, the configuration information of the first SIB can be used for the second network device to feed back the first request of the first terminal device, and can also be used for the second network device to determine the resource configuration information of the first request. For example, the second network device can directly send the configuration information of the first SIB to the first terminal device after receiving the first request. For another example, the second network device can configure the transmission resource of the first request after receiving the configuration information of the first SIB, so as to facilitate the terminal device in the idle state or the inactive state in the first cell to send the first request when accessing.

[0103] Exemplarily, when the first cell determines that there is a non-NES cell around, the first network device can send the configuration information of the first SIB to the network device corresponding to the non-NES cell, so as to assist the non-NES cell to request the first SIB for the first terminal device.

[0104] As an example, the second device can include the first network device and the second network device. The first terminal device can send the first request with the assistance of the second network device, and receive the first SIB / the configuration information of the first SIB sent by the first network device or the second network device. Hereinafter, the communication between the first terminal device and the two cells will be exemplarily described with reference to FIG. 7.

[0105] As an example, the second device can also be another terminal device, for example, a second terminal device, in addition to the first terminal device. The second terminal device can be any kind of terminal device around the first terminal device. Exemplarily, for the first request sent by the first terminal device to trigger the first cell to send the on-demand SIB, the other terminal device can also undertake the auxiliary function of sending the first SIB.

[0106] Taking a UE as an example, there are always many UEs around one UE, and therefore, there is also a lot of potential for UE cooperation. That is, multiple UEs can help to activate one UE to more reliably receive / send data from / to the network, thereby improving the overall spectrum efficiency, system capacity and UE experience. The network can assist UE cooperation and provide more possible transmission paths from the network to the target UE, thereby bringing better coverage. In a very dense network, the access network can also schedule users who benefit from UE cooperation and consider factors such as the creation of cooperation groups, the transmission and sharing of signaling, privacy restrictions, battery consumption and cooperation incentives. For example, multiple UEs in close proximity can be grouped into a UE cooperation group (CG), which will be exemplarily described with reference to FIG. 8 hereinafter.

[0107] In some implementations, the first terminal device can form a UE cooperation group with a plurality of terminal devices. The UE cooperation group can include at least one cooperating UE (CUE) and one target UE (TUE). Optionally, the CUE can be a second terminal device in a non-NES cell, and the TUE can be the first terminal device.

[0108] Optionally, the cell in which the second terminal device is located is a non-NES cell, so as to facilitate the second terminal device to assist the first terminal device to acquire the first SIB or the configuration information of the first SIB. When the second terminal device is in the non-NES cell, the second terminal device can store or receive the SIB-related information of the neighboring NES cell, and the first terminal device can obtain the SIB information in the NES cell from the second terminal device.

[0109] As an example, after receiving the first request, the second terminal device can send the configuration information of the first SIB to the first terminal device. After obtaining the configuration information of the first SIB, the first terminal device can also send the information to a third terminal device in the first cell.

[0110] As an example, the second terminal device can also send the resource configuration information of the first request to the first terminal device. The resource configuration information of the first request is, for example, the transmission time / frequency resource of the first request.

[0111] As an example, the second terminal device can also act as a relay for the first terminal device to communicate with the network device. That is, the CUE in the cooperation group can effectively act as a UE-to-Network relay towards the TUE.

[0112] As an example, in the cooperation group, the second terminal device as the CUE can expand the cooperation group according to the sensing result. For example, the CUE can select a group of active or idle devices near the TUE, and as long as these devices are willing to cooperate or are sensed by the CUE, these devices can be pulled into the cooperation group to expand the cooperation group.

[0113] As an example, the second terminal device can forward the cooperation information to the first terminal device to help the first terminal device to receive data. For example, the CUE can forward the cooperation information to the TUE to help the TUE to decode the data packet received in the multicast phase.

[0114] As an example, the association information or resource configuration information sent by the second terminal device to the first terminal device depends on the strategy of cooperation. That is, the information sent by the second terminal device in the cooperation stage depends on the cooperation strategy. These cooperation strategies include amplification and forwarding of the relevant information of the first SIB, decoding and forwarding, compression and forwarding, (frequency selective) soft forwarding, joint reception, etc.

[0115] As an example, in the process of sidelink communication (including licensed spectrum or shared spectrum), the first terminal device can also obtain the relevant information of the first SIB from the second terminal device.

[0116] In some embodiments, the first terminal device can send the first request to multiple second devices at the same time. For example, since the first terminal device is in an idle state or an inactive state, the first terminal device can send the first request to the first cell and the second cell at the same time, and both the first cell and the second cell will feed back when the first terminal device confirms the first request in the resource configuration information of the first cell and the second cell.

[0117] The above introduces that the first terminal device sends the first request to multiple second devices, and the first request is used to request the first SIB of the first cell.

[0118] In some embodiments, the first SIB is one or more SIBs sent by the first network device according to the needs of the terminal device. Therefore, the first network device does not need to periodically send the first SIB, but sends the first SIB on demand to achieve energy saving. For example, the first network device does not need to send SIB1 according to the period of 160ms and the transmission repetition period within 160ms, but sends according to the first request.

[0119] The first SIB includes SIB1 of the first cell. The network device can send SIB1 according to the request of the terminal device, so as to reduce unnecessary SIB1 sending. As an example, the first SIB can be SIB1 of the first cell, can be all SIBs of the first cell, or can be part of the SIBs of the first cell including SIB1.

[0120] In some implementations, when the first cell is an NES cell, the transmitted SSB can not contain the parameter set of SIB1, so as to reduce transmission overhead. However, part of the configuration of cell random access is provided in SIB1. When the first terminal device discovers the first cell and wants to access the first cell, since the received SSB does not have SIB1, the first SIB needs to be requested.

[0121] In some embodiments, the first SIB is a SIB required by the first terminal device, which can also be referred to as an on-demand SIB. Accordingly, the SIB1 included in the first SIB can also be referred to as an on-demand SIB1, and the first request can also be referred to as an on-demand SIB1 request.

[0122] In some embodiments, the first cell can periodically transmit SSBs, but can not periodically transmit SIB1s. Compared with the first cell as a non-anchor cell, the second cell as an anchor cell can be a cell that transmits SSBs and SIB1s and provides information related to the on-demand SIB1 procedure. For example, in FIG. 3, cell A in service (on) always periodically transmits SSBs (always on). However, the SSBs do not contain SIB1s. For another example, in FIG. 6, cells B, C, and D in service only transmit SSBs (SSB only), but cell A transmits SSBs and SIB1s.

[0123] In some embodiments, when the first cell periodically transmits SSBs, the transmission period of the SSBs can be fixed or variable. For example, in the NES cell, SSB transmission can support periodic transmission with a fixed period length and variable period length transmission.

[0124] As an example, the transmission period of the SSBs can be dynamically adjusted according to the load of the cell. That is, if the period of SSB transmission varies, the SSBs can be dynamically transmitted according to the load of the cell. For example, if the load of the cell is relatively light, the transmission period of the SSBs can be relatively long; if the load of the cell is relatively heavy, the transmission period of the SSBs can be relatively short.

[0125] As an example, the transmission period of the SSBs can be a combination of long and short periods. For example, the transmission of the SSBs can be long-short-long-short. In this scenario, the first cell can choose to transmit SIB information on the long period of the SSBs and only transmit SSB information on the short period of the SSBs. As can be seen, the first cell does not carry SIB1 information on every SSB, but transmits SIB1 information at indefinite or relatively fixed times, so that energy saving can be achieved to some extent.

[0126] It should be noted that in the first cell, the transmission of the SSBs also supports on-demand transmission. For example, if the transmission period of the SSBs is fixed, when the SSBs are transmitted on demand, the SSBs will certainly carry SIB information. In this scenario, the first terminal device requests the SSBs of the first cell, which can also be equivalent to the first terminal device requesting the first SIBs of the first cell.

[0127] The first request can be implemented in various ways. That is, the first terminal device can send information for requesting the first SIB in various ways. Optionally, the first request can comprise one or more of: an uplink wake up signal (WUS), on demand information / signaling for requesting the first SIB, a first sequence for requesting the first SIB, and a preamble index related to the first SIB.

[0128] In some embodiments, the first request can be a WUS, which can also be referred to as an UL WUS. The WUS can be used to wake up the first cell and the first network device in a sleep mode, and can also request the first network device not in the sleep mode to send the first SIB. For example, when the first cell detects the WUS sent by the first terminal device, the first network device can send an on demand SIB1.

[0129] As an example, for a single cell scenario, since the first cell does not carry information of the SIB1 when sending the SSB, the first terminal device needs to send the WUS to trigger the first cell to send the first SIB, which can comprise information of the SIB1.

[0130] As an example, for a multi-cell scenario, it needs to be considered whether the first cell where the first terminal device is located is an NES cell or a non-NES cell. If the first cell is an NES cell, the first terminal device can send the WUS to the NES cell and / or the non-NES cell in the plurality of cells after reading the SSB of the cell. If the first cell is a non-NES cell, the first terminal device can receive the SIB information.

[0131] Optionally, in the multi-cell scenario, if the first cell sends the WUS to the NES cell and the non-NES cell respectively, the design of the WUS corresponding to the NES cell and the non-NES cell can be different or the same.

[0132] In some embodiments, the first request can be on demand information / signaling for requesting the first SIB. The on demand information / signaling can also be used to wake up the first cell and the first network device, or to request the first SIB from the first cell. For example, when the first cell detects the on demand information / signaling sent by the first terminal device, the first network device can send an on demand SIB1.

[0133] As an example, the on demand signaling can be control signaling or data signaling, which is not limited herein.

[0134] As an example, for a single cell scenario, since the first cell does not carry the information of SIB1 when transmitting SSB, the first terminal device needs to send the demand information / demand signaling to trigger the first cell to transmit SIB1 or the configuration information of SIB1.

[0135] As an example, for a multi-cell scenario, if the first cell where the first terminal device is located is an NES cell, the first terminal device can send the demand information / demand signaling to the NES cell and / or the non-NES cell in the plurality of cells after reading the SSB of the cell.

[0136] In some embodiments, the first request can be a first sequence for requesting the first SIB. The first sequence can be a separate sequence or a separate signal. That is, the first terminal device does not need to share the resources of other communication processes when sending the first sequence. For example, when the first cell detects the first sequence sent by the first terminal device, the first network device can send the on-demand SIB1.

[0137] In some embodiments, the first request can be a preamble index related to the first SIB. As an example, when the first terminal device performs random access, the preamble index sent by the first terminal device can be a specified index configured. When the first terminal device selects the specified index, it can indicate that the first terminal device requests the network device to send the first SIB. As an implementation, when the first terminal device requests the base station to issue SIB1 based on the specified preamble index, the base station can respond to the first terminal device by issuing a response message of the random access process. For example, the message 2 (Msg2) used by the base station to respond to the random access contains a random access preamble identifier (RAPID), and when the RAPID is consistent with the preamble index sent by the first terminal device, it can be considered that the base station has received the request of the first terminal device for the first SIB.

[0138] In some embodiments, the first request can include at least two of the above implementation manners, and wake up the first cell in time. For example, the first request can include the uplink wake-up signal and the demand signaling for requesting the first SIB. As another example, when the first request is a wake-up signal, the signal can also be a known sequence.

[0139] In some embodiments, the first terminal device can send the first request in multiple ways. The multiple ways can include multiple uplink resources. Alternatively, the first terminal device can send the first request alone or together with other uplink channels / messages.

[0140] As an example, the first request can be transmitted through an uplink channel of the first terminal device, and / or a resource indicated by the resource configuration information of the first request. As an example, when the first request is transmitted alone, a corresponding transmission resource needs to be configured or pre-configured for the first request. The first terminal device can transmit the first request according to the resource configuration information of the first request after receiving the resource configuration information.

[0141] As an example, the resource configuration information of the first request refers to information used to configure a transmission resource of the first request. The resource configuration information can be information used to pre-configure a transmission resource, or information used to dynamically configure a transmission resource.

[0142] In some implementations, the resource configuration information of the first request can be determined according to assistance information transmitted by the first cell and / or the second cell. The assistance information is used for the first terminal device to request the first SIB including the SIB1, which can also be referred to as SIB1 information. As can be seen, when the first terminal device is located in the NES cell, the first terminal device can not only receive the assistance information transmitted by the NES cell, but also receive the assistance information transmitted by the non-NES cell. For example, in FIG. 6, the terminal device 610 can receive the assistance information through the downlink 601 or 603.

[0143] As an example, when the first terminal device detects the assistance information from the second cell, the first terminal device does not need to access the second cell. The assistance information can provide the first terminal device with information related to the first SIB request process of the first cell (including the resource configuration information of the first request). The first request transmitted by the first terminal device is configured to be transmitted on the first cell and the second cell.

[0144] As an example, the assistance information transmitted by the first cell and / or the second cell can include the resource configuration information of the first request, and the first terminal device can determine the transmission resource of the first request according to the assistance information.

[0145] As an example, the assistance information transmitted by the first cell and / or the second cell can include configuration information of the first SIB, and the configuration information of the first SIB can be used to determine the resource configuration information of the first request.

[0146] As an example, the second cell can determine the resource configuration information of the first request according to the configuration information of the first SIB transmitted by the first cell. That is, the configuration information of the first SIB is used by the second network device to determine the resource configuration information of the first request. For example, after receiving the configuration information of the first SIB, the second network device can determine a time-frequency resource for transmitting the first request, and notify the first terminal device.

[0147] As an example, the first network device can send the first requested resource configuration information and / or the configuration information of the first SIB to the second network device, so as to facilitate the second cell to determine the assistance information.

[0148] As an example, the assistance information of the second cell can configure one NES cell, or can configure multiple NES cells.

[0149] In some embodiments, when the assistance information is sent by the second cell as an anchor cell, the second cell can provide assistance information of multiple SIBs of multiple NES cells around, to assist the terminal device in the multiple NES cells to request SIB1. In this scenario, multiple network devices corresponding to the multiple NES cells can all send the configuration information of the SIBs to the second network device. For example, the second network device can receive the configuration information of the first SIB sent by the first network device, and determine the assistance information sent by the first terminal device according to the information.

[0150] As an example, in the multi-cell scenario, the second cell can integrate the configuration information of multiple SIBs, and send it to the first terminal device through broadcast or dedicated signaling. The first terminal device can send the first request to the first cell according to the configuration information of the multiple SIBs.

[0151] As an example, the SIB1 of the first cell can be multiplexed with the SIB1 of the second cell and / or other non-NES cells.

[0152] As an example, the configuration information of the multiple SIBs of the multiple NES cells can be multiplexed in the signaling sent by the second cell, or the configuration information of the multiple SIBs can be carried in different downlink channels respectively. For example, when the second cell sends the configuration information of one or more SIBs of one or more NES, the SIB1 of different NES cells can be multiplexed together and sent down through common signaling (such as SSB). The terminal device in different cells can distinguish the configuration information needed by the cell where it is located through an index number. For another example, when the second cell sends the configuration information of one or more SIBs of one or more NES, the configuration information of the one or more SIBs can be carried through a separate physical downlink shared channel (PDSCH) respectively.

[0153] As an example, the second network device can receive multiple first requested resource configuration information and multiple SIB configuration information sent by multiple network devices. The multiple cells corresponding to the multiple network devices are NES cells, and the multiple network devices include the first network device. The multiple first requested resource configuration information and the multiple SIB configuration information are used by the second network device to determine the assistance information of the multiple network devices respectively.

[0154] Exemplarily, the plurality of NES cells can send the configured resource configuration information of the first request to the second cell. If the configuration resource of a certain NES cell changes, the second cell is also timely notified. For example, if the first request resource configured by the first cell for the first terminal device changes, the base station of the first cell can notify the base station of the second cell that the first request resource has changed. The base station of the second cell can store the change, and the next time the resource configuration sent to the first terminal device is the new resource configuration.

[0155] As an example, the assistance information sent by the second cell as an anchor cell can include part or all of the following information: a list of selectable non-anchor cells (non-anchor cells) and cell indexes and / or physical cell identifiers (PCIs); power control parameters when the first request (for example, WUS) is transmitted on the NES cell; whether the anchor cell sends SIB1 information of the non-anchor cell; PRACH configuration; search space set configuration of the non-anchor cell that the CORESET / UE can receive random access response (RAR) or SIB1; transmission time / frequency resource of the first request.

[0156] Exemplarily, based on the assistance information of the second cell, the first terminal device knows the cell list of the anchor cell and the non-anchor cell near it (for example, within the coverage area of the same TAC) when it initially accesses, or the anchor cell list near the non-anchor cell where the first terminal device is located. For example, the first terminal device can receive the assistance information provided by the anchor cell through SSB information or other public signaling or proprietary signaling from the anchor cell. Generally, the first cell and the second cell are the same in terms of the configuration and resource of the first request. However, when the configuration information of the two cells is different, the first terminal device needs to make a reasonable selection to access the cell.

[0157] As an implementation, the resource configuration information of the first request can include the first configuration information sent by the first cell and the second configuration information sent by the second cell. When the first configuration information is different from the second configuration information, the first terminal device can send the first request according to the first configuration information. That is, if the resource configuration is different, the first terminal device takes the configuration of the first cell where it is located as the standard.

[0158] As another implementation, the resource configuration information of the first request can include first configuration information sent by the first cell and second configuration information sent by the second cell. When the first configuration information is different from the second configuration information, the first terminal device can select the configuration information for sending the first request from the first configuration information and the second configuration information. That is, the first terminal device can select the first configuration information to send the first request, or can select the second configuration information to send the first request.

[0159] Exemplarily, the first terminal device can select appropriate configuration information according to a service type. The service type can include a priority, an urgency, and the like of the service, which are not limited herein. For example, if the service of the first terminal device is urgent and the service time is not long, the first terminal device can directly access the first cell according to the configuration information of the second cell.

[0160] In some embodiments, the first request carries a small amount of information and occupies a small amount of resources. In a multi-cell scenario, the resources configured for the first request by different NES cells can be the same. Exemplarily, in a cell area covered by the same TAC, the resources configured or reserved for the first request by all NES cells are the same. For example, multiple first requests of multiple NES cells are at the same time-frequency resource location.

[0161] In some embodiments, there can be multiple terminal devices sending the first request respectively, and the system can configure a resource pool (a first resource pool) for multiple terminal devices or network devices to select the configurable resources of the first request. In this case, the resource configuration information of the first request is determined according to the first resource pool. Optionally, as long as there is a resource in the first resource pool, the first request of different terminal devices can be received.

[0162] In some embodiments, different terminal devices can send the first request at the same time, although the resources of the first request are configured in advance, the resources of the network device are limited. Therefore, the first network device or the second network device can set a buffer to receive the on-demand SIB request of multiple terminal devices. As an example, the buffer can store the first request of different terminal devices according to the principle of first come first served.

[0163] In some embodiments, the resource configuration information of the first request is also related to the type or sending manner of the first request.

[0164] As an example, when the first request is a separately sent WUS, the WUS can be a sequence of sequences. In this scenario, the sending end and the receiving end can agree on the content and time-frequency location of the sequence in advance, so as to facilitate wake-up.

[0165] As an example, the resource configuration information of the first request can also be carried in the SSB transmitted by different cells. The different cells can include the first cell, the anchor cell in the plurality of cells described above, or any of the plurality of cells. For example, when the first request is a WUS, the configuration information of the WUS can be carried and transmitted by the SSB of the second cell.

[0166] As an implementation manner, in a single cell scenario, the first terminal device can determine the transmission manner of the first request according to whether the SSB transmitted by the first cell carries the resource configuration information of the first request.

[0167] For example, the first terminal device can receive the first SSB transmitted by the first cell. When the first SSB does not contain the resource configuration information of the first request, the first terminal device transmits the first request through the PRACH; or when the first SSB contains the resource configuration information of the first request, the first terminal device transmits the first request through the PRACH or the resource indicated by the resource configuration information. For example, when the first terminal device transmits the first request based on the resource configuration information, the first terminal device can transmit a separate signal or sequence on the resource indicated by the resource configuration information.

[0168] In some embodiments, when the first terminal device transmits the first request through the uplink resource, multiple uplink (UL) channels can be considered. Optionally, the first request can be transmitted through one or more of the PRACH, the physical uplink control channel (PUCCH), and the physical uplink shared channel (PUSCH). For example, the first request can be carried in these uplink channels. For another example, the first request can share the same resource with these uplink channels for transmission.

[0169] As an example, the first request can be transmitted together with a message in a random access procedure. For example, when the first request is transmitted through the PRACH, the first request can be carried in the uplink message in the random access procedure. Considering different types of random access procedures, the uplink message can include one or more of the following: message 1 (Msg1), message A (MsgA), and message 3 (Msg3). For example, when the first terminal device transmits a WUS to the base station, the WUS can be transmitted alone or together with Msg1 / MsgA. Hereinafter, examples of requesting the first SIB based on message 1 and message 3 will be described with reference to FIGS. 4 and 5, respectively.

[0170] As an example, when the first terminal device sends the first request through the PRACH, the PRACH can be specially designed for the first request of the first terminal device in the idle / inactive mode. For example, the PRACH can not be uplink synchronized. That is, the PRACH can not be synchronized with the uplink.

[0171] As an example, the PRACH for the first request can be configured on the first cell (non-anchor cell) and / or the second cell (anchor cell). That is, the resource configuration information of the first request can indicate the random access resource of the first cell and / or the second cell.

[0172] Optionally, when the resource configuration information of the first request indicates the resource of the second cell, the first request can be monitored by the second cell only, or monitored by both the first cell and the second cell in the case of synchronization between the first cell and the second cell.

[0173] In some embodiments, regardless of whether the first request is sent alone or together with other messages, the related process of the first request can share the first resource with the random access process. That is, the first request can be sent through the common resource of the random access process.

[0174] Optionally, the related process of the first request can include the transmission process of the UL / DL (downlink, DL) signal associated with the request of the first SIB. The transmission resource of these UL / DL signals needs to be configured.

[0175] Optionally, the common resource of the random access process can include the common resource within the first cell for the terminal device to perform the random access process, or the common resource of multiple cells as described above for the terminal device to perform the random access process.

[0176] As an example, the common resource can include the common RACH (random access channel) resource. That is, the resource for sending the DL / UL signal associated with the first request at least partly shares the resource of the common RACH.

[0177] As an example, considering that the first request is sent together with the RACH, at least the common resource of the RACH can be shared.

[0178] As an example, the first request is sent through the common resource of the random access process of the first cell. The common resource of the random access process of the first cell can include all resources or part of the resources for random access of the first cell.

[0179] As an example, the first request is transmitted through common resources of a random access procedure of a second cell (anchor cell) in the plurality of cells. The common resources of the random access procedure of the second cell can include all resources or partial resources used by the second cell for random access.

[0180] As an example, in a multi-cell scenario, when the PRACH of the second cell (anchor cell) is associated with a plurality of non-anchor cells, different indexes can be established for the plurality of non-anchor cells to facilitate the terminal device to determine which cell is accessed through the PRACH configuration. As known from the foregoing, the list of the plurality of non-anchor cells and the cell indexes can be included in the assistance information provided by the second cell.

[0181] As an example, according to the indication of the resource configuration information of the first request, the first request can be transmitted through one or more random access channel occasions (ROs). The RO can also represent a PRACH occasion. That is, the resource configuration information of the first request can indicate one or more ROs for transmitting the first request. For example, the first request can be transmitted through the first RO indicated by the resource configuration information.

[0182] In some implementations, the one or more ROs for the first request can be additional ROs. That is, the one or more ROs are distinguished from the ROs used for random access. Among them, the ROs configured for the legacy terminal device can be referred to as default ROs, and the additional ROs configured for the terminal device supporting the NES function can be referred to as NES ROs to meet the needs of random access and network energy saving at the same time. For example, the base station in the anchor cell can configure the default ROs for the legacy UE and configure the additional NES ROs for the UE supporting the NES function. Therefore, the one or more ROs used by the first terminal device to transmit the first request belong to the NES ROs.

[0183] As an example, the default ROs can be relatively sparse ROs, and the NES ROs can be relatively dense ROs. For example, the NES ROs can be configured to have different RO periods from the default ROs by configuring parameters.

[0184] As an example, the one or more ROs can be configured by reusing part of the parameters in the traditional PRACH configuration, or can be configured by a separate PRACH configuration. That is, a special PRACH configuration can be set for the NES ROs.

[0185] As an example, one or more ROs can be used for the first terminal device to send the first request. For example, in a scenario where the RO period is short, the first request and the sending requirement of the random access channel can be met by configuring a sufficient number of ROs.

[0186] As an example, the configuration of the one or more ROs can be indicated by a downlink control information (DCI) or a medium access control (MAC) control element (CE). The DCI can be a configured grant-DCI (CG-DCI). Thus, the resource configuration information of the first request can include the indication information of the DCI or the MAC CE. When the configuration of the one or more ROs is indicated by the DCI or the MAC-CE, the alignment between the first terminal device and the network device is required to meet the adjustment requirement of the starting point of the RO configuration.

[0187] Optionally, the time domain location of the one or more ROs can be determined according to the receiving time of the indication information of the configurations. That is, the time domain location of the one or more ROs is determined according to the receiving time of the resource configuration information.

[0188] Optionally, the time domain location of the one or more ROs is determined according to the receiving time of the indication information of the configurations and a first time parameter. That is, the time domain location of the one or more ROs is determined according to the receiving time of the resource configuration information and the first time parameter.

[0189] As an example, the first time parameter can be a time period T. The time period T can be a predefined time period, or can be directly indicated in a plurality of candidate configurations. For example, the time domain location of the one or more ROs can be located after the time period T from the receiving time of the (CG-)DCI or the MAC-CE indicating the NES RO.

[0190] As an example, the first time parameter can be a time period associated with a mode or a service type. For example, the time domain location of the one or more ROs can be located after the associated time period from the receiving time point of the (CG-)DCI or the MAC-CE.

[0191] As an example, when the configured one or more ROs are used up, all terminal devices can only use the default RO. All terminal devices can include legacy terminal devices and terminal devices supporting NES function. In the case of large access delay or congestion, the number of default ROs can be insufficient. In this case, the base station can additionally provide NES ROs for terminal devices supporting NES function. Alternatively, terminal devices supporting NES function can send a request to the base station as needed.

[0192] With reference back to FIG. 2, at step S220, the first terminal device receives the first SIB and / or the configuration information of the first SIB.

[0193] In some embodiments, the first SIB can be a system information block directly received by the first terminal device, and the configuration information of the first SIB can be used for the first terminal device to receive the first SIB. That is, the first terminal device can receive the first SIB, or can receive the configuration information thereof.

[0194] As an example, the first terminal device can receive the first SIB sent by the first network device. For example, in FIG. 3, the terminal device 310 can receive the first SIB (e.g., on-demand SIB1) sent by the network device 320 through the downlink 302. As another example, in FIG. 6, the terminal device 610 can receive the first SIB sent by the network device 630 through the downlink 603.

[0195] As an example, the first terminal device can receive the configuration information of the first SIB sent by the first network device. For example, in FIG. 6, the terminal device 610 can receive the configuration information of the first SIB sent by the network device 620 through the downlink 601.

[0196] As an example, the first terminal device can receive the configuration information of the first SIB sent by the second terminal device. For example, in FIG. 8, the terminal device 820 can receive the configuration information of the first SIB sent by the terminal device 810 through the cooperation group or sidelink.

[0197] In some embodiments, when the first terminal device simultaneously sends the first request to multiple devices, the first terminal device can receive the configuration information of the first SIB respectively fed back by the multiple devices. In this scenario, the first terminal device can select the configuration information of the SIB according to the first information. For example, when the first terminal device receives the configuration information of the first SIB sent by the first cell and the configuration information of the second SIB sent by the second cell, the first terminal device selects the configuration information of the first SIB for accessing the first cell based on the first information.

[0198] As an example, the first information can include one or more of the following: a service level of the first terminal device; a service time of the first terminal device; and a result of measurement performed by the first terminal device.

[0199] Optionally, the service level is related to a service type, a service priority of the first terminal device.

[0200] Optionally, the service time is related to a service urgency, a service demand or a user demand of the first terminal device.

[0201] Optionally, the result of measurement includes a parameter such as a reference signal received power (RSRP).

[0202] In some embodiments, the configuration information of the first SIB can include a numerology of SIB1 transmission, a search space and a corresponding CORESET of SIB1 scheduling. For example, the first terminal device can receive the PBCH / MIB containing the configuration information and implement the reception of the first SIB.

[0203] In some embodiments, the configuration information of the first SIB can be used to determine the relevant information of the first cell regarding the first request. The relevant information of the first request can include information related to the request procedure of the first SIB. The first SIB includes SIB1, and these information can also include information related to the on-demand SIB1 procedure, i.e. information related to the request of the first terminal device for the on-demand SIB1 procedure. For example, the information related to the on-demand SIB1 procedure can include RACH configuration triggering the on-demand SIB1.

[0204] As an example, in a multi-cell scenario, the configuration information of the first SIB can be sent by the first network device, by the second network device, or by the second terminal device, without limitation. For example, in FIG. 6, the terminal device can receive the configuration information of the first SIB sent by the network device 630 through the downlink 603, or receive the configuration information of the first SIB sent by the network device 620 through the downlink 601.

[0205] Optionally, when the second device is the first network device, the first network device can send the first SIB or the configuration information of the first SIB if it receives the first request from the first terminal device. For example, the base station can send the first SIB or the configuration information of the first SIB through a broadcast message after receiving the uplink wake-up signal from the first terminal device. The configuration information of the first SIB includes the configuration information of SIB1.

[0206] As an example, the configuration information of the SIB1 received by the first terminal device can be from a NES cell or a non-NES cell.

[0207] In some embodiments, the first SIB transmitted by the first network device through broadcast needs to be transmitted within a period of SSB. In this scenario, if the first terminal device just misses one SSB period, it needs to access and wait. In the next SSB period, the first terminal device can receive the first SIB. For example, when the first SIB is SIB1, the first terminal device can wait for the PBCH / MIB transmitted in the next SSB period. As described before, the PBCH / MIB can provide the numerology of SIB1 transmission, search space and the corresponding SIB1 scheduling CORESET.

[0208] As an example, if the first request of the first terminal device is sent together with the procedure of random access, the first network device can send the SIB1 information specific to the first terminal device to the first terminal device through broadcast information or dedicated information, that is, the configuration information of the first SIB.

[0209] In some embodiments, the first terminal device can monitor the first SIB and / or the configuration information of the first SIB within a first time window. For example, the first terminal device can receive the first SIB and / or the configuration information of the first SIB transmitted by the first network device within the first time window. For another example, the first terminal device can receive the configuration information of the first SIB transmitted by the second network device within the first time window. For another example, the first terminal device can receive the configuration information of the first SIB transmitted by the second terminal device within the first time window.

[0210] Taking SIB1 as an example, the time parameter of the first time window can be determined according to the sending time of the first request. For example, the first terminal device can expect to receive SIB1 in a SIB1 monitoring occasion with a length of L milliseconds (or L slots) after sending the first request. That is, the transmission time of SIB1 is a first time window (detection window) with a length of L milliseconds.

[0211] Still taking SIB1 as an example, the time parameter of the first time window can be determined according to the length of the buffer (T1). For example, the first terminal device can expect to receive SIB1 in a SIB1 monitoring occasion with a length of T1 after sending the first request. For another example, the first terminal device can expect to receive SIB1 in a SIB1 monitoring occasion with a length of L+T1 after sending the first request. That is, the transmission time of SIB1 is a first time window (detection window) with a length of L+T1.

[0212] As an example, the network device can explicitly inform the first terminal device of the time parameter of the first time window, so that the first terminal device can detect the first SIB and / or the configuration information of the first SIB at a suitable time.

[0213] The method in which the first terminal device sends the first request to request the first SIB is described above in combination with FIGS. 2-3 and 6, and the application of the method in the single-cell scenario and the multi-cell scenario.

[0214] In the single-cell scenario shown in FIG. 3, the terminal device 310 is the first terminal device, and the cell A is the first cell. In the scenario served by the cell A, the network device 320 of the cell A will always periodically send the SSB and send the on-demand SIB only after receiving the request of the terminal device 310.

[0215] In the multi-cell scenario shown in FIG. 6, the terminal device 610 is the first terminal device, and the cell B where the terminal device is located is the first cell, and the cell A is the second cell. In this scenario, the terminal device 610 can obtain the configuration of the UL WUS and the SIB1 from a cell other than the cell B.

[0216] As shown in FIG. 6, there are two types of cells in this area. One is an anchor cell (anchored cell), such as the cell A, and the other is a non-anchor cell (NES cell or on-demand SIB1 cell), such as the cell B / C / D. The anchor cell periodically sends the SSB and the SIB1, and the non-anchor cell only sends the SIB1 according to the request of the terminal device.

[0217] For ease of understanding, the flow of the single-cell scenario and the multi-cell scenario will be exemplarily described below in combination with FIGS. 4-5 and 7, respectively.

[0218] FIGS. 4 and 5 are flow diagrams of the single-cell scenario. FIG. 4 takes the on-demand SIB1 request based on the message 1 as an example, and FIG. 5 takes the on-demand SIB1 request based on the message 3 as an example. It should be noted that the methods shown in FIGS. 4 and 5 can also be applied to the multi-cell scenario. In FIGS. 4 and 5, the first terminal device can be a UE, and the first network device can be a gNB corresponding to the first cell.

[0219] Referring to FIG. 4, at step S410, the first terminal device receives the SSB sent by the first network device. The SSB does not have the configuration information of the SIB1.

[0220] At step S420, the first terminal device sends the message 1 (Msg1 to request SIB1) to the first network device to request the SIB1. That is, the first request is carried in the message 1 sent to the first network device to request the first network device to send the SIB1 message. The first terminal device can also carry the first request in the sent message A.

[0221] In step S430, after receiving the first request, the first network device carries SIB1-related configuration information in message 2. The RAR of message 2 contains at least RAPID.

[0222] In step S440, the first network device can broadcast relevant information about SIB1.

[0223] Referring to Figure 5, in step S510, the first terminal device receives the SSB sent by the first network device. The SSB does not contain configuration information for SIB1.

[0224] In step S520, the first terminal device sends message 1 to the first network device.

[0225] In step S530, the first network device sends message 2 to the first terminal device.

[0226] In step S540, the first terminal device sends message 3 to the first network device. The first terminal device may include a first request (RRCSib1Request) in message 3 to request the first network device to send SIB1.

[0227] In step S550, after receiving the first request, the first network device carries the configuration information of the first SIB in message 4.

[0228] In step S560, the first network device can broadcast relevant information about SIB1.

[0229] It should be understood that in some scenarios, both message 1 and message 3 can carry the first request. Regardless of the scenario, before initiating the SIB1 request process, the system needs to provide the first terminal device with the required information (e.g., sending UL-WUS resources and configurations).

[0230] Figure 7 illustrates the process of requesting on-demand SIB1 in a multi-cell scenario. In Figure 7, the first terminal device can be a UE in an idle / inactive state, the first cell can be an NES cell, and the second cell can be an anchor cell. The dashed line indicates that this process is optional.

[0231] Referring to Figure 7, in step S710, the second cell sends assistance information to the first terminal device through the second network device.

[0232] In step S720, the first cell sends a periodic SSB and performs a first request for monitoring (such as WUS monitoring).

[0233] At step S730, the first cell sends the assistance information or the configuration information (config info) to the first terminal device through the first network device.

[0234] At step S740, the first terminal device sends a first request (WUS requesting SIB1) to the first network device.

[0235] At step S750, the first network device sends an acknowledgement (ACK) to the first terminal device.

[0236] At step S760, the first network device sends a triggered SIB1 (and possibly other SIBs).

[0237] From the foregoing, it can be seen that the first terminal device can also obtain the configuration information of the first SIB with the assistance of other terminal devices. For ease of understanding, an example is described below in conjunction with FIG. 8.

[0238] The scenario shown in FIG. 8 includes two cells, cell A that sends a periodic SIB1 and cell B that sends an on-demand SIB1. It can be seen that cell B is a NES cell, i.e., the first cell; and cell A is a non-NES cell (a traditional cell). Cell A has a terminal device 810, and cell B has a terminal device 820 and a terminal device 830.

[0239] As shown in FIG. 8, the terminal device 810, the terminal device 820, and the terminal device 830 can form a cooperation group. In the cooperation group, the terminal device 820 in cell B is the first terminal device (target UE), and the terminal device 830 is the third terminal device; and the terminal device 810 in cell A is the second terminal device (cooperation UE). The terminal device 810 in cell A stores SIB information or receives SIB1 related information of a neighboring NES cell (cell B). The terminal device 820 can obtain the SIB1 in the NES cell from the terminal device 810, and the terminal device 820 can also send the received SIB1 related information to the terminal device 830.

[0240] The foregoing describes application examples of the embodiments of the present application in various scenarios in conjunction with FIGS. 3 to 8. Regardless of a single-cell scenario, a multi-cell scenario, or a cooperation group scenario, the first terminal device needs to determine whether the first cell in which the first terminal device is located is a NES cell. Optionally, the first terminal device can determine whether the first cell is a NES cell according to the second information. When the first cell is a NES cell, the first terminal device can send a first request to the first cell and / or the second cell.

[0241] In some embodiments, the second information can comprise one or more of: whether the SSB transmitted by the first cell contains an indication that the first cell is an NES cell; whether the MIB transmitted by the first cell contains an indication that the first cell is an NES cell; whether the SSB or the MIB transmitted by the first cell contains configuration information of the first SIB; and a load of the first cell.

[0242] As an example, the first terminal device can determine whether the first cell is an NES cell through the SSB or other DL signals (e.g. PDCCH scheduling SIB1) transmitted by the first cell. For example, the PBCH of the SSB can contain an indication of an NES cell. When the first terminal device receives the indication information, it can explicitly know that the cell accessed (i.e. the cell in which it is located) is an NES cell.

[0243] As an example, the first terminal device can determine whether the first cell is an NES cell through the MIB transmitted by the first cell. For example, the MIB can contain an indication of an NES cell. When the first terminal device receives the indication information, it can explicitly know that the cell accessed (i.e. the cell in which it is located) is an NES cell.

[0244] As an example, when the SSB periodically transmitted by the first cell does not contain configuration information of the first SIB, the first terminal device can consider that the cell accessed is an NES cell.

[0245] As an example, whether the first cell is an NES cell is related to the load of the first cell. By way of example, in order to save energy, the network side can support the transmission of on-demand SIBs, but at the same time needs to take into account the situation of cell load. The transmission of on-demand SIBs can be suitable for medium load scenarios. When the number of access terminal devices increases, if the network schedules SIB1 based on a larger period, it can have limitations on access delay and the size of the reserved resource pool, and have a negative impact. Therefore, when the load reaches a high load, the network can resume the transmission of SIB1.

[0246] As an example, when the load of the first cell is greater than a first threshold, the first cell switches from an NES cell to a non-NES cell.

[0247] Further, in a multi-cell scenario, the first terminal device also needs to determine whether the cell in which it is located is an NES cell (on-demand SIB1 cell) or an anchor cell. As known from the foregoing, the anchor cell can provide the first request and the configuration of the first SIB for terminal devices in the adjacent NES cell. In order to access the NES cell, the first terminal device needs to detect at least one anchor cell to obtain the relevant configuration of the NES cell.

[0248] In some embodiments, the second cell can provide the identification of the anchor cell and the non-anchor cell in the PBCH or MIB of the SSB. As mentioned above, the PCI of the NES cells can be included in the assistance information provided by the second cell. After receiving the information, the first terminal device can know whether the accessed cell is an anchor cell or a non-anchor cell. If the first terminal device is in a NES cell, the first terminal device can send a first request to the network device of the NES cell or the network device of the anchor cell to obtain the first SIB.

[0249] As an example, in a multi-cell scenario including the second cell, the first terminal device can receive third information sent by the second cell. The third information can include the identification information of multiple cells. The first terminal device can perform cell access and cell reselection according to the identification information. Optionally, the assistance information provided by the second cell can include the third information.

[0250] As an example, when the first terminal device is in an idle state or an inactive state, it needs to re-enter a connected state.

[0251] As an example, when the first terminal device is in a connected state, it can need to perform cell switching or cell reselection. For example, if the first cell has no resources, cell reselection and switching can be triggered. The first terminal device can directly reselect to the second cell according to the configuration information of the second cell. Therefore, the resources of the first cell can also be used as a condition for cell reselection or switching.

[0252] As an example, when the first terminal device needs to re-enter a connected state, the first terminal device can perform cell measurement and cell reselection according to the strength of the received signal. For example, the first terminal device can select a cell to reside in according to the RSRP of multiple cells (including anchor cells and non-anchor cells) currently received. As can be seen, the first terminal device can access a NES cell or a non-NES cell.

[0253] As an example, the first terminal device can select which cell to continue to reside in according to the results of cell measurement and reselection.

[0254] Optionally, when the first terminal device receives resource configuration for the first request from part of the multiple cells, if it is selected to reside in the current NES cell according to the results of cell measurement and reselection, the first terminal device sends a first request for the first SIB to the NES cell or the anchor cell; if it is selected to reside in the anchor cell, the first terminal device sends a random access request to the anchor cell.

[0255] Optionally, if the first terminal device is in a connected state, a network device (e.g., a base station) of the cell can also send the resource configuration information of the first request through other signals to facilitate the first terminal device to perform cell switching or reselection. The other signals are, for example, a DCI carrying the resource configuration information of the first request of the target cell on a CORESET#0.

[0256] The method embodiments of the present application are described in detail above in combination with FIGS. 1 to 8. The device embodiments of the present application are described in detail below in combination with FIGS. 9 to 13. It should be understood that the description of the device embodiments corresponds to the description of the method embodiments, and therefore, the parts not described in detail can be referred to the foregoing method embodiments.

[0257] FIG. 9 is a schematic block diagram of an apparatus for wireless communication according to an embodiment of the present application. The apparatus 900 can be any of the terminal devices described above. The apparatus 900 shown in FIG. 9 includes a sending unit 910 and a receiving unit 920.

[0258] The sending unit 910 can be configured to send a first request, the first request being used to request a first SIB of a first cell; wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB includes a SIB1 of the first cell.

[0259] The receiving unit 920 can be configured to receive the first SIB and / or configuration information of the first SIB.

[0260] Optionally, the first request includes one or more of the following: an uplink wake-up signal; demand information / demand signaling used to request the first SIB; a first sequence used to request the first SIB; and a preamble index related to the first SIB.

[0261] Optionally, the apparatus 900 further includes a first determining unit configured to determine that the first cell is an NES cell; and the sending unit 910 is further configured to send the first request to the first cell.

[0262] Optionally, the first cell is one of a plurality of cells, the plurality of cells further including a second cell, and the sending unit is further configured to send the first request to the second cell; and the receiving unit is further configured to receive configuration information of the first SIB sent by the first cell and / or the second cell.

[0263] Optionally, the plurality of cells includes a plurality of NES cells and at least one non-NES cell, the second cell is a non-NES cell, the plurality of NES cells includes the first cell, the plurality of NES cells respectively correspond to configuration information of a plurality of SIBs, the configuration information of the plurality of SIBs is multiplexed in signaling sent by the second cell, or the configuration information of the plurality of SIBs is respectively carried on different downlink channels.

[0264] Optionally, the apparatus 900 further comprises a processing unit configured to select the configuration information of the first SIB for accessing the first cell based on the first information when the first terminal device receives the configuration information of the first SIB transmitted by the first cell and the configuration information of the first SIB transmitted by the second cell.

[0265] Optionally, the first information comprises one or more of the following: a service level of the first terminal device; a service time of the first terminal device; and a measurement result of the first terminal device.

[0266] Optionally, the receiving unit 920 is further configured to receive third information transmitted by the second cell; wherein the third information comprises identification information of a plurality of cells, and the identification information of the plurality of cells is used for cell access and / or cell reselection of the first terminal device.

[0267] Optionally, the sending unit 910 is further configured to send the first request to a second terminal device; and the receiving unit is further configured to receive the configuration information of the first SIB transmitted by the second terminal device; wherein the cell where the second terminal device is located is a non-NES cell.

[0268] Optionally, the sending unit 910 is further configured to send the configuration information of the first SIB to a third terminal device located in the first cell.

[0269] Optionally, the apparatus 900 further comprises a second determining unit configured to determine whether the first cell is an NES cell according to the second information; and the sending unit 910 is further configured to send the first request when the first cell is an NES cell.

[0270] Optionally, the second information comprises one or more of the following: whether the SSB transmitted by the first cell contains an identification that the first cell is an NES cell; whether the MIB transmitted by the first cell contains an identification that the first cell is an NES cell; whether the SSB or the MIB transmitted by the first cell contains the configuration information of the first SIB; and a load of the first cell.

[0271] Optionally, the first request is sent through an uplink channel of the first terminal device, and / or the resource configuration information of the first request indicates a resource for sending.

[0272] Optionally, the receiving unit 920 is further configured to receive a first SSB transmitted by the first cell; and the sending unit 910 is further configured to: when the first SSB does not contain the resource configuration information, send the first request through the PRACH; or when the first SSB contains the resource configuration information, send the first request through the PRACH or the resource indicated by the resource configuration information.

[0273] Optionally, when the first request is sent through a common resource of a random access procedure, the resource configuration information indicates one or more ROs for sending the first request.

[0274] Optionally, the first cell is one of a plurality of cells, and the plurality of cells further includes a second cell, and the resource configuration information is determined according to assistance information transmitted by the first cell and / or the second cell.

[0275] Optionally, the resource configuration information includes first configuration information transmitted by the first cell and second configuration information transmitted by the second cell, and the sending unit 910 is further configured to: when the first configuration information is different from the second configuration information, transmit the first request according to the first configuration information; or when the first configuration information is different from the second configuration information, select configuration information for transmitting the first request from the first configuration information and the second configuration information according to the service type.

[0276] Optionally, the receiving unit 920 is further configured to monitor the first SIB and / or configuration information of the first SIB within a first time window, and a time parameter of the first time window is determined according to a transmission time of the first request.

[0277] Optionally, the first terminal device is in an idle state or an inactive state.

[0278] FIG. 10 is a schematic block diagram of another apparatus for wireless communication, according to an embodiment of the present application. The apparatus 1000 can be any one of the first network devices corresponding to the first cell described above. The apparatus 1000 shown in FIG. 10 includes a receiving unit 1010 and a sending unit 1020.

[0279] The receiving unit 1010 can be configured to receive a first request transmitted by the first terminal device, or receive a second request transmitted by a second network device corresponding to a second cell, the first request being used to request a first SIB of the first cell, and the second request being determined according to the first request; wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB includes SIB1 of the first cell.

[0280] The sending unit 1020 can be configured to send the first SIB and / or configuration information of the first SIB to the first terminal device.

[0281] Optionally, the first request includes one or more of the following: an uplink wake-up signal; demand information / demand signaling used to request the first SIB; a first sequence used to request the first SIB; and a preamble index related to the first SIB.

[0282] Optionally, whether the first cell is a NES cell is determined according to second information, and the second information includes one or more of the following: whether SSB transmitted by the first cell contains an identifier that the first cell is a NES cell; whether MIB transmitted by the first cell contains an identifier that the first cell is a NES cell; whether SSB or MIB transmitted by the first cell contains configuration information of the first SIB; and a load of the first cell.

[0283] Optionally, the first request is transmitted through an uplink channel of the first terminal device, and / or the resource indicated by the resource configuration information of the first request is transmitted.

[0284] Optionally, the sending unit 1020 is further configured to send the first SSB, and the receiving unit 1010 is further configured to receive the first request through a PRACH of the first terminal device when the first SSB does not contain the resource configuration information of the first request, or receive the first request through the PRACH of the first terminal device or the resource indicated by the resource configuration information when the first SSB contains the resource configuration information of the first request.

[0285] Optionally, when the first request is transmitted through a common resource of a random access procedure, the resource configuration information indicates one or more ROs used for transmitting the first request.

[0286] Optionally, the sending unit 1020 of the apparatus is further configured to send the resource configuration information and / or the configuration information of the first SIB to a second network device, where the resource configuration information and / or the configuration information of the first SIB are used by the second cell to determine the assistance information.

[0287] Optionally, the first cell is one of a plurality of cells, the plurality of cells include a plurality of NES cells and at least one non-NES cell, the second cell is a non-NES cell, the plurality of NES cells include the first cell, the plurality of NES cells correspond to a plurality of SIB configuration information respectively, the plurality of SIB configuration information are multiplexed with signaling transmitted by the second cell, or the plurality of SIB configuration information are carried in different downlink channels respectively.

[0288] Optionally, the sending unit 1020 is further configured to send the first SIB and / or the configuration information of the first SIB within a first time window, where a time parameter of the first time window is determined according to a transmission time of the first request.

[0289] Optionally, the first terminal device is in an idle state or an inactive state.

[0290] FIG. 11 is a schematic block diagram of another apparatus for wireless communication, according to an embodiment of the present application. The apparatus 1100 can be any one of the second network devices corresponding to the second cell described above. The apparatus 1100 shown in FIG. 11 includes a receiving unit 1110 and a sending unit 1120.

[0291] The receiving unit 1110 can be configured to receive a first request transmitted by a first terminal device, where the first request is used to request a first SIB of a first cell, and the first cell is a serving cell corresponding to the first terminal device, and the first SIB includes a SIB1 of the first cell.

[0292] The sending unit 1120 can be used to send configuration information of the first SIB to the first terminal device.

[0293] Optionally, the first request may include one or more of the following: an uplink wake-up signal; demand information / demand signaling for requesting the first SIB; a first sequence for requesting the first SIB; and a preamble index associated with the first SIB.

[0294] Optionally, the sending unit 1120 is further configured to send a second request to the first network device corresponding to the first cell, wherein the second request is determined based on the first request.

[0295] Optionally, the receiving unit 1110 is further configured to receive resource configuration information and configuration information of multiple SIBs for multiple first requests sent by multiple network devices; wherein, the multiple cells corresponding to the multiple network devices are network energy-saving NES cells, the second cell is a non-NES cell, the multiple network devices include the first network device corresponding to the first cell, and the resource configuration information and configuration information of the multiple first requests are used by the second network device to determine the auxiliary information of the multiple network devices respectively.

[0296] Optionally, whether the first cell is an NES cell is determined based on second information, which includes one or more of the following: whether the SSB sent by the first cell contains an identifier that the first cell is an NES cell; whether the MIB sent by the first cell contains an identifier that the first cell is an NES cell; whether the SSB or MIB sent by the first cell contains configuration information of the first SIB; and the load of the first cell.

[0297] Optionally, the configuration information of multiple SIBs may be multiplexed using the signaling transmitted by the second cell, or the configuration information of multiple SIBs may be carried on different downlink channels.

[0298] Optionally, the first cell is one of multiple cells, the second cell is a non-NES cell, and the sending unit is also used to send third information to the first terminal device; wherein, the third information includes the identification information of multiple cells, and the identification information of multiple cells is used by the first terminal device to perform cell access and / or cell reselection.

[0299] Optionally, the first request may be sent via the uplink channel of the first terminal device, and / or via the resource indicated by the resource configuration information of the first request.

[0300] Optionally, when the first request is sent via a public resource of the random access procedure, the resource configuration information indicates one or more Resource Entities (ROs) for sending the first request.

[0301] Optionally, the resource configuration information is determined based on auxiliary information sent by the first cell and / or the second cell.

[0302] Optionally, the sending unit is further configured to send the configuration information of the first SIB within a first time window, wherein a time parameter of the first time window is determined according to a sending time of the first request.

[0303] Optionally, the first terminal device is in an idle state or an inactive state.

[0304] FIG. 12 is a schematic block diagram of another apparatus for wireless communication, according to an embodiment of the present application. The apparatus 1200 can be any of the second terminal devices described above. The apparatus 1200 in FIG. 12 includes a receiving unit 1210 and a sending unit 1220.

[0305] The receiving unit 1210 can be configured to receive a first request sent by a first terminal device, the first request being used to request a first SIB of a first cell, wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB includes a SIB1 of the first cell.

[0306] The sending unit 1220 can be configured to send configuration information of the first SIB to the first terminal device.

[0307] Optionally, the first request includes one or more of the following: demand information / demand signaling used to request the first SIB; and a first sequence used to request the first SIB.

[0308] Optionally, the first cell is an NES cell, and a cell in which the second terminal device is located is a non-NES cell.

[0309] Optionally, whether the first cell is an NES cell is determined according to second information, and the second information includes one or more of the following: whether SSB sent by the first cell contains an identifier of the first cell being an NES cell; whether MIB sent by the first cell contains the identifier of the first cell being an NES cell; whether the SSB or the MIB sent by the first cell contains the configuration information of the first SIB; and a load of the first cell.

[0310] Optionally, the sending unit is further configured to send the configuration information of the first SIB within a first time window, wherein a time parameter of the first time window is determined according to a sending time of the first request.

[0311] Optionally, the first terminal device is in an idle state or an inactive state.

[0312] FIG. 13 is a structural schematic diagram of a communication apparatus, according to an embodiment of the present application. The dashed line in FIG. 13 indicates that the unit or module is optional. The apparatus 1300 can be used to implement the methods described in the above method embodiments. The apparatus 1300 can be a chip, a terminal device, or a network device.

[0313] The apparatus 1300 can include one or more processors 1310. The processor 1310 can support the apparatus 1300 to implement the methods described in the foregoing method embodiments. The processor 1310 can be a general processor or a special-purpose processor. For example, the processor can be a central processing unit (CPU). Alternatively, the processor can also be other general processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gates or transistor logic, discrete hardware components, etc. The general processor can be a microprocessor or the processor can also be any conventional processor.

[0314] The apparatus 1300 can also include one or more memories 1320. The memory 1320 stores programs, which can be executed by the processor 1310, so that the processor 1310 performs the methods described in the foregoing method embodiments. The memory 1320 can be independent of the processor 1310 or integrated in the processor 1310.

[0315] The apparatus 1300 can also include a transceiver 1330. The processor 1310 can communicate with other devices or chips through the transceiver 1330. For example, the processor 1310 can perform data transceiving with other devices or chips through the transceiver 1330.

[0316] The embodiments of the present application also provide a computer readable storage medium for storing programs. The computer readable storage medium can be applied to the terminal device or the network device provided by the embodiments of the present application, and the programs make the computer execute the methods performed by the terminal device or the network device in the embodiments of the present application.

[0317] The computer readable storage medium can be any available medium readable by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD)) or a semiconductor medium (for example, a solid state disk (SSD)) and the like.

[0318] The embodiment of the present application further provides a computer program product. The computer program product comprises a program. The computer program product can be applied to the terminal device or the network device provided by the embodiment of the present application, and the program causes the computer to execute the method performed by the terminal device or the network device in the various embodiments of the present application.

[0319] In the above embodiment, the implementation can be achieved by software, hardware, firmware or any combination thereof, entirely or partially. When implemented by software, the implementation can be achieved by a computer program product, entirely or partially. The computer program product comprises one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated, entirely or partially. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. The computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be transferred from one website, computer, server or data center to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).

[0320] The embodiment of the present application further provides a computer program. The computer program can be applied to the terminal device or the network device provided by the embodiment of the present application, and the computer program causes the computer to execute the method performed by the terminal or the network device in the various embodiments of the present application.

[0321] The terms "system" and "network" can be used interchangeably in the present application. In addition, the terms used in the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. The terms "first", "second", "third" and "fourth" and the like in the specification and claims of the present application and the drawings are used to distinguish different objects, and are not used to describe a particular order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0322] In the embodiments of the present application, the "indication" mentioned can be direct indication, indirect indication, or can be an indication with an associated relationship. For example, A indicates B, which can mean that B can be obtained by A, or A indirectly indicates B, for example, A indicates C, and B can be obtained by C, or A and B have an associated relationship.

[0323] In the embodiments of the present application, the term "corresponding" can represent a relationship with direct or indirect correspondence between the two, can also represent a relationship with association between the two, or can indicate a relationship with being indicated, configured, etc.

[0324] In the embodiments of the present application, "predefined" or "preconfigured" can be implemented by pre-saving corresponding codes, tables or other means for indicating related information in devices (for example, including terminal devices and network devices), and the specific implementation manner is not limited in the present application. For example, the predefinition can refer to definition in a protocol.

[0325] In the embodiments of the present application, the "protocol" can refer to a standard protocol in the communication field, for example, can include the LTE protocol, the NR protocol and the related protocol applied in the future communication system, and the present application is not limited to this.

[0326] In the embodiments of the present application, according to A to determine B does not mean that B is determined only according to A, but B can also be determined according to A and / or other information.

[0327] In the embodiments of the present application, the term "and / or" is only to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents an "or" relationship between the front and rear associated objects.

[0328] In the embodiments of the present application, the size of the serial number of the above processes does not mean the execution order, and the execution order of the processes should be determined according to its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0329] In several embodiments provided by the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the device embodiments described above are only schematic. The division of the units is only a logical function division. There can be another division way in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed coupling or direct coupling or communication connection between each other can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or in other forms.

[0330] The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected to achieve the purpose of the embodiment of the present application according to actual needs.

[0331] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit.

[0332] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A method for wireless communication, comprising: Comprising: A first terminal device sends a first request, the first request being used for requesting a first system information block (SIB) of a first cell; The first terminal device receives the first SIB and / or configuration information of the first SIB; The first cell is a serving cell of the first terminal device, and the first SIB comprises SIB1 of the first cell.

2. The method of claim 1, wherein, The first request comprises one or more of the following: An uplink wake-up signal; Demand information / demand signaling used for requesting the first SIB; A first sequence used for requesting the first SIB; and A preamble index related to the first SIB.

3. The method according to claim 1 or 2, characterized in that, The method further comprises: The first terminal device determines that the first cell is a network energy saving (NES) cell; The first terminal device sends the first request to the first cell.

4. The method according to claim 1 or 2, characterized in that, The first cell is one of a plurality of cells, and the plurality of cells further comprises a second cell, and the method further comprises: The first terminal device sends the first request to the second cell; The first terminal device receives configuration information of the first SIB sent by the first cell and / or the second cell.

5. The method of claim 4, wherein, The plurality of cells comprises a plurality of NES cells and at least one non-NES cell, the second cell is the non-NES cell, the plurality of NES cells comprises the first cell, the plurality of NES cells respectively correspond to configuration information of a plurality of SIBs, the configuration information of the plurality of SIBs is multiplexed in signaling sent by the second cell, or the configuration information of the plurality of SIBs is respectively carried in different downlink channels.

6. The method according to claim 4 or 5, characterized in that, The method further comprises: When the first terminal device receives the configuration information of the first SIB sent by the first cell and the configuration information of the first SIB sent by the second cell, the first terminal device selects the configuration information of the first SIB for accessing the first cell based on first information.

7. The method of claim 6, wherein, The first information comprises one or more of the following: Service level of the first terminal device; Service time of the first terminal device; and Measurement result of the first terminal device.

8. The method according to any one of claims 4-7, characterized in that, The method further comprises: The first terminal device receives third information sent by the second cell; The third information comprises identification information of the plurality of cells, and the identification information of the plurality of cells is used for cell access and / or cell reselection of the first terminal device.

9. The method of claim 1 or 2, wherein, The method further comprises: The first terminal device sends the first request to a second terminal device; The first terminal device receives configuration information of the first SIB sent by the second terminal device; The cell where the second terminal device is located is a non-NES cell.

10. The method of claim 9, wherein, The method further comprises: The first terminal device sends the configuration information of the first SIB to a third terminal device located in the first cell.

11. The method according to any one of claims 1-10, characterized in that, The method further comprises: The first terminal device determines whether the first cell is an NES cell according to second information; When the first cell is an NES cell, the first terminal device sends the first request.

12. The method of claim 11, wherein, The second information comprises one or more of the following: whether a synchronization signal block (SSB) transmitted by the first cell contains an indication that the first cell is a NES cell; whether a master information block (MIB) transmitted by the first cell contains an indication that the first cell is a NES cell; whether the SSB or the MIB transmitted by the first cell contains configuration information of the first SIB; and a load of the first cell.

13. The method according to any one of claims 1-12, characterized in that, The first request is transmitted through an uplink channel of the first terminal device, and / or a resource indicated by resource configuration information of the first request.

14. The method of claim 13, wherein, The method further includes: The first terminal device receives a first SSB transmitted by the first cell; when the first SSB does not contain the resource configuration information, the first terminal device transmits the first request through a physical random access channel (PRACH); or, when the first SSB contains the resource configuration information, the first terminal device transmits the first request through the PRACH or the resource indicated by the resource configuration information.

15. The method of claim 13, wherein, When the first request is transmitted through a common resource of a random access procedure, the resource configuration information indicates one or more random access channel occasions (ROs) used for transmitting the first request.

16. The method according to any one of claims 13-15, characterized by, The first cell is one of a plurality of cells, the plurality of cells further including a second cell, and the resource configuration information is determined according to assistance information transmitted by the first cell and / or the second cell.

17. The method of claim 16, wherein, The resource configuration information includes first configuration information transmitted by the first cell and second configuration information transmitted by the second cell, and the method further includes: when the first configuration information is different from the second configuration information, the first terminal device transmits the first request according to the first configuration information; or when the first configuration information is different from the second configuration information, the first terminal device selects configuration information for transmitting the first request from the first configuration information and the second configuration information according to a service type.

18. The method of any one of claims 1-17, wherein, The method further includes: The first terminal device monitors the first SIB and / or the configuration information of the first SIB within a first time window; wherein a time parameter of the first time window is determined according to a transmission time of the first request.

19. The method of any one of claims 1-18, wherein, The first terminal device is in an idle state or an inactive state.

20. A method for wireless communication, comprising: includes: A first network device corresponding to a first cell receives a first request transmitted by a first terminal device, or receives a second request transmitted by a second network device corresponding to a second cell, the first request being used to request a first system information block (SIB) of the first cell, and the second request being determined according to the first request; The first network device transmits the first SIB and / or configuration information of the first SIB to the first terminal device; wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB includes SIB1 of the first cell.

21. The method of claim 20, wherein, The first request includes one or more of the following: an uplink wake-up signal; demand information / demand signaling used to request the first SIB; a first sequence used to request the first SIB; and a preamble index related to the first SIB.

22. The method of claim 20 or 21, wherein, whether the first cell is a network energy saving, NES, cell is determined according to second information, the second information comprising one or more of: whether a synchronization signal block, SSB, transmitted by the first cell contains an identification that the first cell is a NES cell; whether a master information block, MIB, transmitted by the first cell contains an identification that the first cell is a NES cell; whether the SSB or the MIB transmitted by the first cell contains configuration information of the first SIB; and a load of the first cell.

23. The method of any one of claims 20-22, wherein, the first request is transmitted through an uplink channel of the first terminal device, and / or a resource indicated by resource configuration information of the first request.

24. The method of claim 23, wherein, The method further comprises: the first network device transmits a first SSB; when the first SSB does not contain the resource configuration information of the first request, the first network device receives the first request through a physical random access channel, PRACH, of the first terminal device; or when the first SSB contains the resource configuration information of the first request, the first network device receives the first request through the PRACH of the first terminal device or the resource indicated by the resource configuration information.

25. The method of claim 23, wherein, when the first request is transmitted through a common resource of a random access procedure, the resource configuration information indicates one or more random access channel occasions, ROs, for transmitting the first request.

26. The method of any one of claims 23-25, wherein, The method further comprises: the first network device transmits the resource configuration information and / or configuration information of the first SIB to the second network device; wherein the resource configuration information and / or the configuration information of the first SIB are used by the second cell to determine the assistance information.

27. The method of any one of claims 20-26, wherein, The first cell is one of a plurality of cells, the plurality of cells comprising a plurality of NES cells and at least one non-NES cell, the second cell being the non-NES cell, the plurality of NES cells comprising the first cell, the plurality of NES cells respectively corresponding to configuration information of a plurality of SIBs, the configuration information of the plurality of SIBs being multiplexed with signaling transmitted by the second cell, or the configuration information of the plurality of SIBs being respectively carried on different downlink channels.

28. The method of any one of claims 20-27, wherein, The method further comprises: the first network device transmits the first SIB and / or the configuration information of the first SIB within a first time window; wherein a time parameter of the first time window is determined according to a transmission time of the first request.

29. The method of any one of claims 20-28, wherein, The first terminal device is in an idle state or an inactive state.

30. A method for wireless communication, comprising: Comprise: a second network device corresponding to a second cell receives a first request transmitted by a first terminal device, the first request being used to request a first system information block, SIB, of a first cell; the second network device transmits configuration information of the first SIB to the first terminal device; wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB comprises SIB1 of the first cell.

31. The method of claim 30, wherein, The first request comprises one or more of the following: an uplink wake-up signal; demand information / demand signaling used to request the first SIB; a first sequence used to request the first SIB; and A preamble index related to the first SIB.

32. The method of claim 30 or 31, wherein, The method further includes: The second network device sends a second request to a first network device corresponding to the first cell, wherein the second request is determined according to the first request.

33. The method of any one of claims 30-32, wherein, The method further includes: The second network device receives resource configuration information of a plurality of first requests and configuration information of a plurality of SIBs sent by a plurality of network devices; The plurality of network devices correspond to a plurality of cells, the second cell is a non-NES cell, and the plurality of network devices include a first network device corresponding to the first cell. The resource configuration information of the plurality of first requests and / or the configuration information of the plurality of SIBs are used by the second network device to determine assistance information of the plurality of network devices, respectively.

34. The method of claim 33, wherein, Whether the first cell is an NES cell is determined according to second information, and the second information includes one or more of the following: Whether a synchronization signal block (SSB) sent by the first cell contains an identification that the first cell is an NES cell; Whether a master information block (MIB) sent by the first cell contains an identification that the first cell is an NES cell; Whether the SSB or the MIB sent by the first cell contains configuration information of the first SIB; and A load of the first cell.

35. The method of claim 33 or 34, wherein, The configuration information of the plurality of SIBs is multiplexed with signaling sent by the second cell, or the configuration information of the plurality of SIBs is carried in different downlink channels, respectively.

36. The method of any one of claims 30-35, wherein, The first cell is one of a plurality of cells, the second cell is a non-NES cell, and the method further includes: The second network device sends third information to the first terminal device; The third information includes identification information of the plurality of cells, and the identification information of the plurality of cells is used by the first terminal device to perform cell access and / or cell reselection.

37. The method of any one of claims 30-36, wherein, The first request is sent through an uplink channel of the first terminal device, and / or the resource configuration information of the first request indicates a resource for sending.

38. The method of claim 37, wherein, When the first request is sent through a common resource of a random access process, the resource configuration information indicates one or more random access channel occasions (ROs) for sending the first request.

39. The method of claim 37 or 38, wherein, The resource configuration information is determined according to assistance information sent by the first cell and / or the second cell.

40. The method of any one of claims 30-39, wherein, The method further includes: The second network device sends configuration information of the first SIB in a first time window; A time parameter of the first time window is determined according to a sending time of the first request.

41. The method of any one of claims 30-40, wherein, The first terminal device is in an idle state or an inactive state.

42. A method for wireless communication, comprising: The method further includes: The second terminal device receives a first request sent by the first terminal device, and the first request is used to request a first system information block (SIB) of a first cell; The second terminal device sends configuration information of the first SIB to the first terminal device; The first cell is a serving cell corresponding to the first terminal device, and the first SIB includes SIB1 of the first cell.

43. The method of claim 42, wherein, The first request includes one or more of the following: Demand information / demand signaling for requesting the first SIB; a first sequence for requesting the first SIB.

44. The method of claim 42 or 43, wherein, The first cell is a network energy saving (NES) cell, and a cell where the second terminal device is located is a non-NES cell.

45. The method of any one of claims 42-44, wherein, Whether the first cell is an NES cell is determined according to second information, and the second information includes one or more of the following: Whether a synchronization signal block (SSB) transmitted by the first cell contains an identifier of the first cell being an NES cell; Whether a master information block (MIB) transmitted by the first cell contains the identifier of the first cell being an NES cell; Whether the SSB or the MIB transmitted by the first cell contains configuration information of the first SIB; and A load of the first cell.

46. The method of any one of claims 42-45, wherein, The method further includes: The second terminal device transmits the configuration information of the first SIB within a first time window. A time parameter of the first time window is determined according to a transmission time of the first request.

47. The method of any one of claims 42-46, wherein, The first terminal device is in an idle state or an inactive state.

48. An apparatus for wireless communication, characterized in that, The apparatus is a first terminal device, and the apparatus includes: a sending unit configured to send a first request for requesting a first system information block (SIB) of a first cell; a receiving unit configured to receive the first SIB and / or configuration information of the first SIB; The first cell is a serving cell corresponding to the first terminal device, and the first SIB includes SIB1 of the first cell.

49. The device of claim 48, wherein, The first request includes one or more of the following: an uplink wake-up signal; demand information / demand signaling for requesting the first SIB; a first sequence for requesting the first SIB; and a preamble index related to the first SIB.

50. The device of claim 48 or 49, wherein, The apparatus further includes: a first determining unit configured to determine that the first cell is a network energy saving (NES) cell; The sending unit is further configured to send the first request to the first cell.

51. The device of claim 48 or 49, wherein, The first cell is one of a plurality of cells, and the plurality of cells further includes a second cell. The sending unit is further configured to send the first request to the second cell. The receiving unit is further configured to receive configuration information of the first SIB transmitted by the first cell and / or the second cell.

52. The device of claim 51, wherein, The plurality of cells includes a plurality of NES cells and at least one non-NES cell. The second cell is the non-NES cell. The plurality of NES cells includes the first cell. The plurality of NES cells respectively correspond to configuration information of a plurality of SIBs. The configuration information of the plurality of SIBs is multiplexed in signaling transmitted by the second cell, or the configuration information of the plurality of SIBs is respectively carried in different downlink channels.

53. The device of claim 51 or 52, wherein, The apparatus further includes: a processing unit configured to, when the first terminal device receives configuration information of the first SIB transmitted by the first cell and configuration information of the first SIB transmitted by the second cell, select, based on first information, configuration information of the first SIB for accessing the first cell.

54. The device of claim 53, wherein, The first information includes one or more of the following: a service level of the first terminal device; a service time of the first terminal device; and a result of measurement performed by the first terminal device.

55. The device of any one of claims 51-54, wherein, The receiving unit is further configured to receive third information sent by the second cell; the third information comprises identification information of the plurality of cells, and the identification information of the plurality of cells is used for cell access and / or cell reselection of the first terminal device.

56. The device of claim 48 or 49, wherein, The sending unit is further configured to send the first request to a second terminal device; and the receiving unit is further configured to receive configuration information of the first SIB sent by the second terminal device; wherein the cell in which the second terminal device is located is a non-NES cell.

57. The device of claim 56, wherein, The sending unit is further configured to send the configuration information of the first SIB to a third terminal device located in the first cell.

58. The device of any one of claims 48-57, wherein, The apparatus further comprises: A second determining unit configured to determine whether the first cell is an NES cell according to second information. The sending unit is further configured to send the first request when the first cell is an NES cell.

59. The device of claim 58, wherein, The second information comprises one or more of the following: Whether a synchronization signal block (SSB) sent by the first cell contains identification that the first cell is an NES cell; Whether a master information block (MIB) sent by the first cell contains identification that the first cell is an NES cell; Whether the SSB or the MIB sent by the first cell contains the configuration information of the first SIB; and A load of the first cell.

60. The device of any one of claims 48-59, wherein, The first request is sent through an uplink channel of the first terminal device, and / or resource configuration information of the first request indicates a resource.

61. The device of claim 60, wherein, The receiving unit is further configured to receive a first SSB sent by the first cell; and the sending unit is further configured to: When the first SSB does not contain the resource configuration information, send the first request through a physical random access channel (PRACH); or When the first SSB contains the resource configuration information, send the first request through a PRACH or the resource indicated by the resource configuration information.

62. The device of claim 61, wherein, When the first request is sent through a common resource of a random access process, the resource configuration information indicates one or more random access channel occasions (ROs) used for sending the first request.

63. The device of any one of claims 60-62, wherein, The first cell is one of a plurality of cells, the plurality of cells further comprising a second cell, and the resource configuration information is determined according to auxiliary information sent by the first cell and / or the second cell.

64. The device of claim 63, wherein, The resource configuration information comprises first configuration information sent by the first cell and second configuration information sent by the second cell, and the sending unit is further configured to: When the first configuration information is different from the second configuration information, send the first request according to the first configuration information; or When the first configuration information is different from the second configuration information, select configuration information used for sending the first request from the first configuration information and the second configuration information according to a service type.

65. The device of any one of claims 48-64, wherein, The receiving unit is further configured to monitor the first SIB and / or the configuration information of the first SIB within a first time window; wherein a time parameter of the first time window is determined according to a sending time of the first request.

66. The device of any one of claims 48-65, wherein, The first terminal device is in an idle state or an inactive state.

67. An apparatus for wireless communication, characterized in that, The device is a first network device corresponding to a first cell, and the device comprises: a receiving unit configured to receive a first request sent by a first terminal device, or receive a second request sent by a second network device corresponding to a second cell, wherein the first request is used to request a first system information block (SIB) of the first cell, and the second request is determined according to the first request; a sending unit configured to send the first SIB and / or configuration information of the first SIB to the first terminal device; wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB comprises SIB1 of the first cell.

68. The device of claim 67, wherein, The first request comprises one or more of the following: an uplink wake-up signal; demand information / demand signaling used to request the first SIB; a first sequence used to request the first SIB; and a preamble index related to the first SIB.

69. The device of claim 67 or 68, wherein, Whether the first cell is a network energy saving (NES) cell is determined according to second information, and the second information comprises one or more of the following: whether a synchronization signal block (SSB) sent by the first cell contains an identifier of the first cell as an NES cell; whether a master information block (MIB) sent by the first cell contains an identifier of the first cell as an NES cell; whether the SSB or the MIB sent by the first cell contains configuration information of the first SIB; and a load of the first cell.

70. The device of any one of claims 67-69, wherein, The first request is sent through an uplink channel of the first terminal device, and / or a resource indicated by resource configuration information of the first request.

71. The device of claim 70, wherein, The sending unit is further configured to send a first SSB. The receiving unit is further configured to: receive the first request through a physical random access channel (PRACH) of the first terminal device when the first SSB does not contain the resource configuration information of the first request; or receive the first request through the PRACH of the first terminal device or a resource indicated by the resource configuration information when the first SSB contains the resource configuration information of the first request.

72. The device of claim 70, wherein, When the first request is sent through a common resource of a random access process, the resource configuration information indicates one or more random access channel occasions (ROs) used to send the first request.

73. The device of any one of claims 70-72, wherein, The sending unit is further configured to send the resource configuration information and / or the configuration information of the first SIB to the second network device, wherein the resource configuration information and / or the configuration information of the first SIB are used by the second cell to determine auxiliary information.

74. The device of any one of claims 67-73, wherein, The first cell is one of a plurality of cells, the plurality of cells comprising a plurality of NES cells and at least one non-NES cell, the second cell being the non-NES cell, the plurality of NES cells comprising the first cell, the plurality of NES cells respectively corresponding to configuration information of a plurality of SIBs, the configuration information of the plurality of SIBs being multiplexed with signaling sent by the second cell, or the configuration information of the plurality of SIBs being respectively carried on different downlink channels.

75. The device of any one of claims 67-74, wherein, The sending unit is further configured to send the first SIB and / or configuration information of the first SIB within a first time window, wherein a time parameter of the first time window is determined according to a sending time of the first request.

76. The device of any one of claims 67-75, wherein, The first terminal device is in an idle state or an inactive state.

77. A device for wireless communication, characterized in that, The apparatus is a second network device corresponding to a second cell, and the apparatus comprises: a receiving unit configured to receive a first request sent by a first terminal device, the first request being used to request a first system information block (SIB) of a first cell; a sending unit configured to send configuration information of the first SIB to the first terminal device; wherein the first cell is a serving cell corresponding to the first terminal device, and the first SIB comprises SIB1 of the first cell.

78. The device of claim 77, wherein, The first request comprises one or more of the following: an uplink wake-up signal; demand information / demand signaling used to request the first SIB; a first sequence used to request the first SIB; and a preamble index related to the first SIB.

79. The device of claim 77 or 78, wherein, The sending unit is further configured to send a second request to a first network device corresponding to the first cell, wherein the second request is determined according to the first request.

80. The device of any one of claims 77-79, wherein, The receiving unit is further configured to receive resource configuration information of a plurality of first requests and configuration information of a plurality of SIBs sent by a plurality of network devices, wherein a plurality of cells corresponding to the plurality of network devices are network energy saving (NES) cells, the second cell is a non-NES cell, and the plurality of network devices comprise a first network device corresponding to the first cell, the resource configuration information of the plurality of first requests and / or the configuration information of the plurality of SIBs being used by the second network device to respectively determine assistance information of the plurality of network devices.

81. The device of claim 80, wherein, Whether the first cell is an NES cell is determined according to second information, and the second information comprises one or more of the following: whether a synchronization signal block (SSB) sent by the first cell contains an identifier of the first cell as an NES cell; whether a master information block (MIB) sent by the first cell contains the identifier of the first cell as an NES cell; whether the SSB or the MIB sent by the first cell contains the configuration information of the first SIB; and a load of the first cell.

82. The device of claim 80 or 81, wherein, The configuration information of the plurality of SIBs is multiplexed with signaling sent by the second cell, or the configuration information of the plurality of SIBs is respectively carried on different downlink channels.

83. The device of any one of claims 77-82, wherein, The first cell is one of a plurality of cells, the second cell is a non-NES cell, and the sending unit is further configured to send third information to the first terminal device, wherein the third information comprises identifier information of the plurality of cells, and the identifier information of the plurality of cells is used by the first terminal device to perform cell access and / or cell reselection.

84. The device of any one of claims 77-83, wherein, The first request is sent through an uplink channel of the first terminal device, and / or the resource configuration information of the first request indicates a resource for sending.

85. The device of claim 84, wherein, When the first request is sent through a common resource of a random access procedure, the resource configuration information indicates one or more random access channel occasions (ROs) used to send the first request.

86. The device of claim 84 or 85, wherein, The resource configuration information is determined according to assistance information sent by the first cell and / or the second cell.

87. The device of any one of claims 77-86, wherein, The sending unit is further configured to send the configuration information of the first SIB within a first time window, wherein a time parameter of the first time window is determined according to a sending time of the first request.

88. The device of any of claims 77-87, wherein, The first terminal device is in an idle state or an inactive state.

89. An apparatus for wireless communication, the apparatus comprising: The apparatus is a second terminal device, and the apparatus comprises: a receiving unit configured to receive a first request sent by a first terminal device, the first request being used to request a first system information block (SIB) of a first cell; a sending unit configured to send configuration information of the first SIB to the first terminal device; The first cell is a serving cell corresponding to the first terminal device, and the first SIB comprises SIB1 of the first cell.

90. The device of claim 89, wherein, The first request comprises one or more of the following: demand information / demand signaling used to request the first SIB; a first sequence used to request the first SIB.

91. The device of claim 89 or 90, wherein, The first cell is a network energy saving (NES) cell, and a cell in which the second terminal device is located is a non-NES cell.

92. The device of any one of claims 89-91, wherein, Whether the first cell is an NES cell is determined according to second information, and the second information comprises one or more of the following: whether a synchronization signal block (SSB) sent by the first cell contains an identifier of the first cell as an NES cell; whether a master information block (MIB) sent by the first cell contains the identifier of the first cell as an NES cell; whether the SSB or the MIB sent by the first cell contains the configuration information of the first SIB; and a load of the first cell.

93. The device of any one of claims 89-92, wherein, The sending unit is further configured to send the configuration information of the first SIB within a first time window, wherein a time parameter of the first time window is determined according to a sending time of the first request.

94. The device of any one of Claims 89-93, wherein, The first terminal device is in an idle state or an inactive state.

95. A communications device, characterized by The apparatus comprises a memory and a processor, the memory is configured to store a program, and the processor is configured to invoke the program in the memory to perform the method in any one of claims 1-47.

96. An apparatus comprising: The apparatus comprises a processor configured to invoke a program from a memory to perform the method in any one of claims 1-47.

97. A chip, characterized by The apparatus comprises a processor configured to invoke a program from a memory to cause a device in which the chip is installed to perform the method in any one of claims 1-47.

98. A computer-readable storage medium, characterized in that, The apparatus comprises a program configured to cause a computer to perform the method in any one of claims 1-47.

99. A computer program product, characterized in that, The apparatus comprises a program configured to cause a computer to perform the method in any one of claims 1-47.

100. A computer program, characterized in that, The apparatus comprises a program configured to cause a computer to perform the method in any one of claims 1-47.

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