Communication method and related apparatus

Abstract

The present application provides a communication method and a related apparatus. The method comprises: sending a first request message, the first request message being used for requesting a system information block (SIB1) of a target second communication apparatus; and receiving SIB1 of the target second communication apparatus. By implementing the present application, a first communication apparatus is enabled to obtain SIB1 of the target second communication apparatus, thereby enabling the first communication apparatus to camp on a cell corresponding to the target second communication apparatus.

Description

Communication method and related device

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on April 3, 2024, with application number 202410409091.8 and application name “Communication Methods and Related Devices”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of wireless communication technology, and in particular to a communication method and related devices. Background Art

[0003] In a communication system, network equipment typically periodically broadcasts system information block 1 (SIB1), allowing terminal devices to obtain SIB1 and reside in the corresponding cell. To save energy, network equipment in network energy saving (NES) cells is currently allowed not to broadcast SIB1. However, if a user equipment (UE) needs to reside in a cell without broadcasting the cell's SIB1, how to enable the terminal to obtain the cell's SIB1 is an urgent problem to be solved. Summary of the Invention

[0004] The embodiments of the present application provide a communication method and related apparatus, which can enable a terminal to obtain the SIB1 of a network energy saving cell (NESCell).

[0005] In a first aspect, the present application provides a communication method, which can be applied to a first communication device, or to a device in the first communication device (e.g., a chip, or a chip system, or a circuit), or a device that can be used in conjunction with the first communication device. The following description is based on the application to the first communication device as an example. The communication method may include: sending a first request message, the first request message being used to request a system information block SIB1 of a target second communication device; and receiving the SIB1 of the target second communication device.

[0006] Since the cell corresponding to the second communication device is an NES cell, SIB1 will not be sent periodically. In the solution provided in the present application, by enabling the first communication device to send a first request message, the first communication device can obtain the SIB1 of the target second communication device, and then the first communication device can reside in the cell corresponding to the target second communication device.

[0007] In a possible implementation, the method also includes: receiving first information and / or second information, the first information includes wake-up signal WUS configuration information of the third communication device, the first information is used to configure the first communication device to send WUS to request the SIB1 of the target second communication device in a first request message, the SIB1 of the target second communication device is included in the first system message or first signaling of the third communication device, the second information includes list information, the list information includes identification information of one or more second communication devices; sending the first request message includes: sending the first request message according to the WUS configuration information of the third communication device.

[0008] In a possible implementation manner, the WUS configuration information in the first information includes a correspondence between a random access preamble code and one or more second communication devices.

[0009] In one possible implementation, the first request message includes a random access preamble corresponding to the target second communication device, and sending the first request message according to the WUS configuration information of the third communication device includes:

[0010] A first request message is sent to the third communication device according to the correspondence between the random access preamble code and one or more second communication devices in the WUS configuration information of the third communication device. The first request message is used to request the third communication device to send the SIB1 of the target second communication device. The SIB1 of the target second communication device is included in the first system message or the first signaling.

[0011] In the solution provided in this application, the first request message includes a random access preamble code corresponding to the target second communication device, and the random access preamble code corresponds to one or more second communication devices. Therefore, the first communication device can obtain the SIB1 of the target second communication device from the third communication device.

[0012] In a possible implementation manner, the WUS configuration information in the first information includes a correspondence between a random access preamble code and a first system message.

[0013] In one possible implementation, the first request message includes a random access preamble corresponding to the first system message, and sending the first request message according to the WUS configuration information of the third communication device includes:

[0014] A first request message is sent to the third communication device according to the correspondence between the random access preamble code and the first system message in the WUS configuration information of the third communication device. The first request message is used to request the third communication device to send the SIB1 of one or more second communication devices, and the SIB1 of one or more second communication devices is included in the first system message.

[0015] In the solution provided in this application, the first request message includes a random access preamble corresponding to the target second communication device. The random access preamble corresponds to the first system message. Therefore, the first communication device can obtain the SIB1s of all second communication devices in the list information from the third communication device. The SIB1s of all second communication devices in the list information include the SIB1 of the target second communication device.

[0016] In a possible implementation, the communication method further includes: receiving second information and / or third information, the second information includes list information, the list information includes identification information of one or more second communication devices, the third information includes wake-up signal WUS configuration information of the third communication device, and the third information is used to configure the first communication device to send WUS to request SIB1 of one or more second communication devices in a first request message; sending the first request message includes: sending the first request message according to the WUS configuration information of the third communication device.

[0017] In a possible implementation manner, the WUS configuration information in the third information includes a correspondence between a random access preamble code and one or more second communication devices.

[0018] In one possible implementation, the first request message includes a random access preamble corresponding to the target second communication device, and sending the first request message according to the WUS configuration information of the third communication device includes:

[0019] A first request message is sent according to the correspondence between the random access preamble code in the WUS configuration information of the third communication device and one or more second communication devices, where the first request message is used to request the SIB1 of the target second communication device.

[0020] In the solution provided in this application, the first request message includes a random access preamble corresponding to the target second communication device, and the random access preamble corresponds to one or more second communication devices. Based on the first request message, the third communication device sends a third request message to the target second communication device, requesting the target second communication device to transmit SIB1. Therefore, the first communication device can obtain the SIB1 of the target second communication device from the target second communication device.

[0021] In a possible implementation manner, the WUS configuration information in the third information includes a correspondence between a random access preamble code and the SIB1 requesting the second communication device.

[0022] In a possible implementation, the WUS configuration information in the third information includes a correspondence between the random access preamble and the list information, that is, the random access preamble corresponds to all the second communication devices in the list information.

[0023] In one possible implementation, the first request message includes a random access preamble corresponding to the SIB1 requesting the second communication device or includes a correspondence between the random access preamble and the list information, and sending the first request message according to the WUS configuration information of the third communication device includes:

[0024] A first request message is sent according to the correspondence between the random access preamble in the WUS configuration information of the third communication device and the SIB1 requested of the second communication device, where the first request message is used to request the SIB1 of one or more second communication devices.

[0025] In the solution provided in this application, the first request message includes a random access preamble corresponding to the SIB1 of the requested second communication device. The random access preamble corresponds to the SIB1 of the requested second communication device. Therefore, the first communication device can obtain the SIB1 of the second communication device from all second communication devices in the list information. All second communication devices in the list information include the target second communication device. In other words, all obtained second communication devices include the SIB1 of the target second communication device sent by the target second communication device.

[0026] In a possible implementation, the communication method also includes: receiving second information and / or fourth information, the second information includes list information, the list information includes identification information of one or more second communication devices, and the fourth information is used to configure the first communication device to send a second request message, and the second request message is used to request the wake-up signal WUS configuration information of one or more second communication devices; sending the first request message includes: sending a second request message, the second request message is used to request the WUS configuration information of one or more second communication devices, and the WUS configuration information of one or more second communication devices is included in the second system message or second signaling of the third communication device; receiving the second system message or second signaling of the third communication device; and sending the first request message to the target second communication device according to the WUS configuration information of the target second communication device.

[0027] In a possible implementation manner, the fourth information includes a correspondence between a random access preamble code and one or more second communication devices.

[0028] In one possible implementation, the second request message includes a random access preamble corresponding to the target second communication device, and sending the second request message includes: sending the second request message to the third communication device according to the correspondence between the random access preamble and one or more second communication devices.

[0029] In the solution provided in the present application, the second request message includes a random access preamble corresponding to the target second communication device, and the random access preamble corresponds to one or more second communication devices. Therefore, the first communication device can obtain the WUS configuration information of the target second communication device, thereby sending the first request message to the target second communication device, and then obtaining the SIB1 of the target second communication device from the target second communication device.

[0030] In a possible implementation manner, the fourth information includes a correspondence between the random access preamble code and the second system message.

[0031] In one possible implementation, the second request message includes a random access preamble corresponding to the second system message, and sending the second request message includes: sending the second request message to the third communication device according to a correspondence between the random access preamble and the second system message.

[0032] In the solution provided in the present application, the second request message includes a random access preamble corresponding to the second system message. The random access preamble corresponds to the second system message. Therefore, the first communication device can obtain the WUS configuration information of all second communication devices in the list information, thereby sending the first request message to all second communication devices in the list information, and then obtaining the SIB1 of all second communication devices from all second communication devices, that is, obtaining the SIB1 of the target second communication device from the target second communication device. Alternatively, after the first communication device obtains the WUS configuration information of all second communication devices in the list information, it only sends the first request message to the target second communication device, thereby obtaining the SIB1 of the target second communication device.

[0033] In a possible implementation method, the communication method also includes: receiving fifth information, the fifth information including the wake-up signal WUS configuration information of the target second communication device; sending a first request message includes: when the cell corresponding to the target second communication device is a network energy saving NES cell, sending a first request message to the target second communication device, the NES cell being a cell in which the second communication device does not broadcast SIB1.

[0034] In a possible implementation, the communication method further includes: determining whether the cell corresponding to the target second communication device is an NES cell.

[0035] In one possible implementation, the fifth information further includes the first parameter, and determining whether the cell corresponding to the target second communication device is an NES cell includes:

[0036] determining, according to the value of the first parameter, whether the cell corresponding to the target second communication device is an NES cell;

[0037] When the value of the first parameter is the first value, it is determined that the cell corresponding to the target second communication device is an NES cell.

[0038] In one possible implementation, determining whether the cell corresponding to the target second communication device is an NES cell includes: searching for the SIB1 of the target second communication device; and determining that the cell corresponding to the target second communication device is an NES cell if the SIB1 of the target second communication device is not found within a preset time range.

[0039] In one possible implementation, the first request message is sent based on message 1 or message 3. When the first request message is sent based on message 1, the first request message includes a random access preamble corresponding to SIB1 of the second communication device.

[0040] In a possible implementation, message 3 includes identification information of the target second communication device.

[0041] In a second aspect, the present application provides a communication method, which can be applied to a second communication device, or to a device in the second communication device (e.g., a chip, or a chip system, or a circuit), or a device that can be used in conjunction with the second communication device. The following description is based on the application to the second communication device as an example. The method may include:

[0042] sending information of the target second communication device to the third communication device, where the information of the target second communication device includes identification information of the target second communication device; and / or

[0043] Sending a system information block SIB1 of the target second communication device to the first communication device; and / or

[0044] The WUS configuration of the target second communication device is sent.

[0045] In the solution provided in the present application, the first communication device may acquire the SIB1 of the target second communication device by sending the WUS configuration or preparation SIB1 of the target second communication device to the third communication device.

[0046] It should be understood that the executor of the second aspect can be a second communication device, the specific content of the second aspect corresponds to the content of the first aspect, and the corresponding features and beneficial effects achieved by the second aspect can refer to the description of the first aspect. To avoid repetition, the detailed description is appropriately omitted here.

[0047] In one possible implementation, when sending information of the target second communication device to the third communication device and sending the system information block SIB1 of the target second communication device to the first communication device, the method further includes: receiving a third request message sent by the third communication device, the third request message being used to request the target second communication device to send SIB1.

[0048] In one possible implementation, when sending information of the target second communication device to the third communication device, sending the system information block SIB1 of the target second communication device, and sending the WUS configuration information of the target second communication device to the first communication device, the method also includes: receiving a first request message, the first request message being used to request the target second communication device to send SIB1.

[0049] In a possible implementation method, without sending the information of the target second communication device to the third communication device, but sending the system information block SIB1 of the target second communication device to the first communication device, the method also includes: sending fifth information, the fifth information including the wake-up signal WUS configuration information of the target second communication device; receiving a first request message, the first request message being used to request the target second communication device to send SIB1.

[0050] In a possible implementation manner, the fifth information further includes a correspondence between the SIB1 of the target second communication device and the random access preamble code.

[0051] In a third aspect, the present application provides a communication method, which can be applied to a third communication device, or to a device in the third communication device (e.g., a chip, or a chip system, or a circuit), or a device that can be used with the third communication device. The following description is based on the application to the third communication device as an example. The method may include:

[0052] Sending first information and / or second information to a first communication device, the first information includes wake-up signal WUS configuration information of a third communication device, the first information is used to configure the first communication device to send WUS to request a first system message or first signaling of the third communication device in a first request message, and the second information includes list information, the list information includes identification information of one or more second communication devices; receiving a first request message sent by the first communication device, the first request message is used to request the system information block SIB1 of the target second communication device; sending a first system message or first signaling according to the first request message, the first system message includes the SIB1 of the target second communication device, and the first signaling includes the SIB1 of the target second communication device.

[0053] It should be understood that the executor of the third aspect can be a third communication device, the specific content of the third aspect corresponds to the content of the first aspect, and the corresponding features and beneficial effects achieved by the third aspect can refer to the description of the first aspect. To avoid repetition, the detailed description is appropriately omitted here.

[0054] In a possible implementation manner, the first information further includes a correspondence between the random access preamble code and one or more second communication devices.

[0055] In a possible implementation manner, the first information further includes a correspondence between the random access preamble code and the first system message.

[0056] In a possible implementation, the communication method further includes: receiving second communication device information sent by one or more second communication devices, where the second communication device information includes an identification of the second communication device.

[0057] In a fourth aspect, the present application provides a communication method, which can be applied to a third communication device, or to a device in the third communication device (for example, a chip, or a chip system, or a circuit), or a device that can be used in combination with the third communication device. The following description is given by taking the application to the third communication device as an example. The method may include: sending second information and / or third information to a first communication device, the second information including list information, the list information including identification information of one or more second communication devices, the third information including wake-up signal WUS configuration information of the third communication device, the third information being used to configure the first communication device to send WUS to request SIB1 of one or more second communication devices in a first request message; receiving a first request message sent by the first communication device, the first request message being used to request the system information block SIB1 of one or more second communication devices; sending a third request message according to the first request message, the third request message being used to request one or more second communication devices to send SIB1 of one or more second communication devices.

[0058] It should be understood that the executor of the third aspect can be a third communication device, the specific content of the third aspect corresponds to the content of the first aspect, and the corresponding features and beneficial effects achieved by the third aspect can refer to the description of the first aspect. To avoid repetition, the detailed description is appropriately omitted here.

[0059] In a possible implementation manner, the third information further includes a correspondence between the random access preamble code and one or more second communication devices.

[0060] In a possible implementation manner, the third information further includes a correspondence between the random access preamble code and the system information block SIBX of the third communication device.

[0061] In a possible implementation, the communication method further includes: receiving second communication device information sent by one or more second communication devices, where the second communication device information includes an identification of the second communication device.

[0062] In a fifth aspect, the present application provides a communication method, which can be applied to a third communication device, or to a device in the third communication device (for example, a chip, or a chip system, or a circuit), or a device that can be used in combination with the third communication device. The following description is given by taking the application to the third communication device as an example. The method may include: sending second information and / or fourth information to the first communication device, the second information includes list information, the list information includes identification information of one or more second communication devices, and the fourth information is used to configure the first communication device to send a second request message, and the second request message is used to request the wake-up signal WUS configuration information of one or more second communication devices; receiving a second request message, the second request message is used to request a second system message or second signaling of the third communication device, the second system message includes the WUS configuration information of the target second communication device, and the second signaling includes the WUS configuration information of the target second communication device; sending a second system message or a second signaling.

[0063] It should be understood that the executor of the third aspect can be a third communication device, the specific content of the third aspect corresponds to the content of the first aspect, and the corresponding features and beneficial effects achieved by the third aspect can refer to the description of the first aspect. To avoid repetition, the detailed description is appropriately omitted here.

[0064] In a possible implementation manner, the fourth information further includes a correspondence between the random access preamble code and one or more second communication devices.

[0065] In a possible implementation manner, the fourth information further includes a correspondence between the random access preamble code and the second system message.

[0066] In a possible implementation, the communication method further includes: receiving second communication device information sent by one or more second communication devices, where the second communication device information includes an identification of the second communication device.

[0067] In a sixth aspect, the present application provides a communication device, comprising a module / unit for performing any of the methods described in the first aspect and its possible implementations. The device may be a first communication device, or a module (e.g., a chip, a chip system, or a processor) applied to the first communication device, or a logical node, logic module, or software that can implement all or part of the functions of the first communication device.

[0068] In a seventh aspect, the present application provides a communication device, comprising a module / unit for performing any of the methods described in the second aspect and its possible implementations. The device may be a second communication device, or a module (e.g., a chip, a chip system, or a processor) applied to the second communication device, or a logical node, logic module, or software that can implement all or part of the functions of the second communication device.

[0069] In an eighth aspect, the present application provides a communication device, comprising a module / unit for executing the method described in any of the third aspect and its possible implementations, a module / unit for the method described in any of the fourth aspect and its possible implementations, and a module / unit for the method described in any of the fifth aspect and its possible implementations. The device can be a third communication device, or a module (such as a chip, a chip system, or a processor) applied to a third communication device, or a logical node, logic module, or software that can implement all or part of the functions of a third communication device.

[0070] In a ninth aspect, an embodiment of the present application provides a communication device, which may be a first communication device or a device in the first communication device (e.g., a chip, a chip system, or a circuit). The communication device may include a processor, the processor being coupled to a memory, the memory being used to store programs or instructions, and when the program or instructions are executed by the processor, the communication device executes the method performed by the first communication device or the device in the first communication device in the above method embodiment.

[0071] In a tenth aspect, an embodiment of the present application provides a communication device, which may be a second communication device or a device in the second communication device (e.g., a chip, a chip system, or a circuit). The communication device may include a processor, the processor being coupled to a memory, the memory being used to store programs or instructions, and when the program or instructions are executed by the processor, the communication device executes the method performed by the second communication device or the device in the second communication device in the above method embodiment.

[0072] In an eleventh aspect, an embodiment of the present application provides a communication device, which may be a third communication device or a device in a third communication device (e.g., a chip, a chip system, or a circuit). The communication device may include a processor, the processor being coupled to a memory, the memory being used to store programs or instructions, and when the program or instructions are executed by the processor, the communication device executes the method performed by the third communication device or the device in the third communication device in the above method embodiment.

[0073] In the twelfth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program or computer instructions. When the computer program or computer instructions are run on a computer, the computer executes the method in the above-mentioned first aspect or any possible implementation of the first aspect, the method in the second aspect or any possible implementation of the second aspect, the method in the third aspect or any possible implementation of the third aspect, the method in the fourth aspect or any possible implementation of the fourth aspect, and the method in the fifth aspect or any possible implementation of the fifth aspect.

[0074] In the thirteenth aspect, an embodiment of the present application provides a computer program product comprising program instructions, which, when run on a computer, enables the computer to execute the method in the first aspect or any possible implementation of the first aspect, the second aspect or any possible implementation of the second aspect, the third aspect or any possible implementation of the third aspect, the fourth aspect or any possible implementation of the fourth aspect, and the fifth aspect or any possible implementation of the fifth aspect.

[0075] In a fourteenth aspect, embodiments of the present application provide a chip system comprising a processor for implementing the functions of each of the above methods. In one possible implementation, the chip system may further comprise a memory for storing program instructions and / or data. The chip system may be composed of a chip alone or may include a chip and other discrete components.

[0076] In the fifteenth aspect, an embodiment of the present application provides a communication system, which includes a first communication device and a second communication device. When the first communication device and the second communication device are running in the communication system, they are used to execute any one of the methods described in the first to fifth aspects above. BRIEF DESCRIPTION OF THE DRAWINGS

[0077] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments.

[0078] FIG1 is a schematic diagram of a network architecture of a mobile communication system provided in an embodiment of the present application;

[0079] FIG2 is an interactive diagram of a communication method provided in an embodiment of the present application;

[0080] FIG3 is a schematic diagram of a correspondence between a random access preamble and a second communication device provided in an embodiment of the present application;

[0081] FIG4 is a schematic diagram of a correspondence between another random access preamble and a second communication device provided in an embodiment of the present application;

[0082] FIG5 is a schematic diagram of a correspondence between another random access preamble and a second communication device provided in an embodiment of the present application;

[0083] FIG6 is a schematic diagram of a correspondence between another random access preamble and a second communication device provided in an embodiment of the present application;

[0084] FIG7 is an interactive diagram of another communication method provided in an embodiment of the present application;

[0085] FIG8 is an interactive diagram of another communication method provided in an embodiment of the present application;

[0086] FIG9 is an interactive diagram of another communication method provided in an embodiment of the present application;

[0087] FIG10 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

[0088] FIG11 is a schematic structural diagram of another communication device provided in an embodiment of the present application;

[0089] FIG12 is a schematic structural diagram of a first communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0090] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0091] The terms "first" and "second" and the like in the specification, claims, and drawings of this application are used to distinguish between different objects, not to describe a particular order. Furthermore, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0092] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0093] In this application, "at least one (item)" refers to one or more, "more than one" refers to two or more, "at least two (items)" refers to two or three and more than three, and "and / or" is used to describe the association relationship of associated objects, indicating that there can be three relationships. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0094] In this application, "sending information" can be understood as one device sending information to another device, or as one logical module within a device sending information to another logical module. For example, "an access network device sending information" can be understood as an access network device sending information to another device (such as a terminal), or as logical module 1 within an access network device sending information to logical module 2 within the access network device.

[0095] In this application, "receiving information" can be understood as one device receiving information from another device, or as a logical module within a device receiving information from another logical module. For example, "an access network device receiving information" can be understood as the access network device receiving information from another device (such as a terminal), or as logical module 1 within the access network device receiving information from logical module 2 within the access network device.

[0096] In this application, "sending information to... (e.g., a terminal)" can be understood as the destination of the information being the terminal. This can include sending information to the terminal directly or indirectly. "Receiving information from... (e.g., a terminal)" or "receiving information from... (e.g., a terminal)" can be understood as the source of the information being the terminal, which can include receiving information from the terminal directly or indirectly. The information may undergo necessary processing between the source and destination of the information, such as format changes, but the destination can understand the valid information from the source. Similar expressions in this application can be understood similarly and will not be repeated here.

[0097] To better understand the embodiments of the present application, the following first introduces the system architecture involved in the embodiments of the present application:

[0098] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: global system for mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, universal mobile telecommunications system (UMTS) system, enhanced data rate for GSM evolution (EDGE) system, and world-wide interoperability for microwave access (WiMAX) system. The technical solutions of the embodiments of the present application can also be applied to other communication systems, such as public land mobile network (PLMN) systems, advanced long term evolution (LTE advanced, LTE-A) systems, fifth generation mobile communication (5G) systems, new radio (NR) systems, open access networks (open RAN, ORAN) systems, machine to machine communication (machine to machine, M2M) systems, or other communication systems evolved in the future, etc., and the embodiments of the present application are not limited to this. The technical solutions provided in the embodiments of the present application can also be applied to other communication systems, as long as there are entities in the communication system that can send control information and send (and / or receive) transmission blocks, and there are other entities in the communication system that can receive control information and receive (and / or send) transmission blocks.

[0099] The following explanation uses the system architecture shown in Figure 1 as an example. As shown in Figure 1, communications system 1000 includes a radio access network (RAN) 100, a core network (CN) 200, and the Internet 300. RAN 100 includes at least one access network device (e.g., network element 110a and network element 110b in Figure 1, collectively referred to as 110) and at least one terminal (e.g., 120a-120j in Figure 1, collectively referred to as 120). RAN 100 may also include other RAN nodes, such as wireless relay devices and / or wireless backhaul devices (not shown in Figure 1). Terminal 120 is wirelessly connected to access network device 110. Access network device 110 is wirelessly or wiredly connected to core network 200. The core network devices in core network 200 and access network device 110 in RAN 100 can be separate physical devices, or they can be a single physical device that integrates core network logical functions and radio access network logical functions.

[0100] It should be noted that RAN 100 can be a cellular system related to the 3rd Generation Partnership Project (3GPP), for example, a 4G or 5G mobile communication system, or an evolved system after 5G (for example, a 6G mobile communication system). RAN 100 can also be an open access network (open RAN, O-RAN or ORAN), a cloud radio access network (CRAN), etc. RAN 100 can also be a communication system that is a fusion of two or more of the above systems. It should be stated that the number of access network devices and terminal devices in Figure 1 is only for illustration and should not be regarded as a specific limitation on the present application. The terminal devices and access network devices involved in the system architecture are described in detail below.

[0101] 1. Terminal Equipment

[0102] Terminal devices can also be called user equipment (UE), mobile station (MS), mobile terminal (MT), etc. They are devices used to provide voice or data connectivity to users, or they can be IoT devices. For example, terminal devices include handheld devices with wireless connectivity, in-vehicle devices, etc. Currently, terminal devices can include: mobile phones, tablet computers, laptop computers, PDAs, mobile internet devices (MIDs), wearable devices (such as smart watches, smart bracelets, pedometers, etc.), vehicle-mounted devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed trains, etc.), satellite terminals, virtual reality (VR) devices, augmented reality (AR) devices, smart point-of-sale (POS) machines, customer-premises equipment (CPE), wireless terminals in industrial control, smart home devices (such as refrigerators, televisions, air conditioners, electricity meters, etc.), intelligent robots, robotic arms, workshop equipment, wireless terminals in unmanned driving, wireless terminals in telemedicine, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, and flying devices (such as intelligent robots, hot air balloons, drones, airplanes). Terminal devices can also be other devices with terminal functions, for example, terminal devices can also be devices that function as terminals in D2D communication.

[0103] The embodiments of this application do not limit the device form factor of the terminal. The device used to implement the functions of the terminal device can be the terminal device; it can also be a device that supports the terminal device to implement the functions, such as a chip system. The device can be installed in the terminal device or used in conjunction with the terminal device. In the embodiments of this application, the chip system can be composed of chips or include chips and other discrete devices.

[0104] 2. Access Network Equipment

[0105] An access network device is a node in a radio access network (RAN), and can also be referred to as a network device or a RAN node (or device). An access network device is used to help terminals achieve wireless access. The multiple access network devices 110 in the communication system 1000 can be nodes of the same type or different types. In some scenarios, the roles of the access network device 110 and the terminal 120 are relative. For example, the network element 120i in Figure 1 can be a helicopter or a drone, which can be configured as a mobile base station. For the terminal 120j that accesses the RAN 100 through the network element 120i, the network element 120i is a base station; but for the network element 110a, the network element 120i is a terminal. The access network device 110 and the terminal 120 are sometimes referred to as communication devices. For example, the network elements 110a and 110b in Figure 1 can be understood as communication devices with base station functions, and the network elements 120a-120j can be understood as communication devices with terminal functions.

[0106] In one possible scenario, an access network device may be a base station, an evolved NodeB (eNodeB), a transmitting and receiving point (TRP), a transmitting point (TP), a next-generation NodeB (gNB), a next-generation base station in a sixth-generation (6G) mobile communication system, a base station in a future mobile communication system, a satellite, an integrated access and backhaul (IAB) node, a mobile switching center, or an access network device in a non-terrestrial network (NTN) communication system, i.e., it may be deployed on a high-altitude platform or satellite. The access network device may be a macro base station (e.g., network element 110a in Figure 1 ), a micro base station or an indoor station (e.g., network element 110b in Figure 1 ), a relay node or a donor node, or a wireless controller in a CRAN scenario. The access network device may also be a device that functions as a base station in device-to-device (D2D) communication, vehicle-to-vehicle communication, drone communication, or machine communication. Optionally, the access network device may also be a server, a wearable device, a vehicle or an onboard device, etc. For example, the access network device in vehicle to everything (V2X) technology may be a road side unit (RSU).

[0107] All or part of the functions of the access network device in this application may also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform). The access network device in this application may also be a logical node, logical module, or software that can implement all or part of the functions of the access network device.

[0108] In another possible scenario, multiple access network devices collaborate to assist the terminal in achieving wireless access, and different access network devices respectively implement part of the functions of the base station. For example, the access network device can be a centralized unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). The CU and DU can be set separately, or they can also be included in the same network element, such as a baseband unit (BBU). The RU can be included in a radio frequency device or a radio frequency unit, such as a remote radio unit (RRU), an active antenna unit (AAU), or a remote radio head (RRH). It can be understood that the access network device can be a CU node, a DU node, or a device including a CU node and a DU node. In addition, the CU can be divided into an access network device in the access network RAN, or the CU can be divided into an access network device in the core network CN, which is not limited here.

[0109] In different systems, CU (or CU-CP and CU-UP), DU or RU may also have different names, but those skilled in the art can understand their meanings. For example, in the ORAN system, CU may also be called O-CU (Open CU), DU may also be called O-DU, CU-CP may also be called O-CU-CP, CU-UP may also be called O-CU-UP, and RU may also be called O-RU. For the convenience of description, this application uses CU, CU-CP, CU-UP, DU and RU as examples for description. Any unit of CU (or CU-CP, CU-UP), DU and RU in this application can be implemented by a software module, a hardware module, or a combination of a software module and a hardware module.

[0110] In the embodiments of the present application, the form of the access network device is not limited. The device used to implement the functions of the access network device can be the access network device; it can also be a device that supports the access network device to implement the functions, such as a chip system. The device can be installed in the access network device or used in conjunction with the access network device.

[0111] The network equipment and / or terminal can be fixed or mobile. The network equipment and / or terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on aircraft, balloons and artificial satellites in the air. The present disclosure does not limit the application scenarios of network equipment and terminals. The network equipment and terminal equipment can be deployed in the same scenario or different scenarios. For example, the network equipment and terminal equipment are deployed on land at the same time; or, the network equipment is deployed on land and the terminal equipment is deployed on the water surface, etc., and no further examples are given.

[0112] In an embodiment of the present application, a terminal device or a network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application. As long as it is possible to communicate according to the method provided in the embodiment of the present application by running a program that records the code of the method provided in the embodiment of the present application, for example, the execution subject of the method provided in the embodiment of the present application can be a terminal device or a network device, or a functional module in the terminal device or the network device that can call a program and execute the program.

[0113] In addition, various aspects or features of the present application can be implemented as methods, apparatus, or articles of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as used in this application covers computer programs that can be accessed from any computer-readable device, carrier, or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memories (EPROMs), cards, sticks, or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0114] It should be noted that the number and type of network devices and terminal devices included in the network architecture shown in Figure 1 are merely examples, and the embodiments of the present application are not limited thereto. For example, more or fewer terminal devices that communicate with the network devices may also be included. For the sake of simplicity, they are not described one by one in the accompanying drawings. In addition, in the network architecture shown in Figure 1, although network devices and terminal devices are shown, the application scenario may not be limited to including network devices and terminal devices. For example, core network devices or devices for carrying virtualized network functions may also be included. These are obvious to those skilled in the art and will not be described one by one here.

[0115] The following is a description of the technical terms that may appear in the examples of this application. The terms used in the embodiments of this application are only used to explain the specific examples of this application and are not intended to limit this application. It should be understood that the definitions of each technical term below are only examples. For example, with the continuous development of technology, the scope of the above definitions may also change, and the examples of this application do not limit them.

[0116] (1) System information (SI)

[0117] System information primarily consists of a master information block (MIB) and multiple system information blocks (SIBs). SIBs primarily include SIB1 and other SIBs (also known as SIBX). Generally speaking, MIB and SIB1 are broadcast periodically, while other SIBs can be broadcast periodically or on demand. On-demand system information can be requested using either MSG1 or MSG3.

[0118] (2)MSG1-based

[0119] 1. First, the terminal device sends a preamble sequence to the network device. The preamble sequence corresponds to the requested SIB. 2. The terminal device receives a random access response. 3. The terminal device receives the requested SIB via broadcast.

[0120] (3)MSG3-based

[0121] 1. The terminal device sends a preamble sequence to the network device. 2. The terminal device receives a random access response. 3. The terminal device sends a message group 3 (MSG3) to the network device, which indicates the requested SIB information. 4. The terminal device receives contention resolution information. 5. The terminal device receives the requested SIB information via broadcast.

[0122] In a communication system, network devices typically periodically broadcast system information block 1 (SIB1), allowing terminal devices to obtain SIB1 and reside in the corresponding cell. To save energy, network devices are currently allowed not to broadcast the cell's SIB1. However, if a terminal device (UE) needs to reside in the cell without broadcasting the cell's SIB1, how to enable the terminal to obtain the cell's SIB1 is an urgent problem to be solved.

[0123] This application provides a variety of communication methods, which will be described below through the following embodiments. Some of these communication methods are only applicable to certain processes, while others can be applied to any one or more processes. It should be understood that these communication methods can be used in combination with each other.

[0124] It should be understood that communication methods may change as technical solutions evolve, and the technical solutions provided in this application are not limited to the process described below. Furthermore, the description of the scenarios in the embodiments of this application is only an example, and does not limit the solutions of the embodiments of this application to be applicable only to the described scenarios. They are also applicable to scenarios with similar problems.

[0125] The first communication device in the following embodiments may be a terminal device in the network architecture shown in FIG1 , and the function performed by the first communication device in this embodiment may also be performed by a device in the first communication device (e.g., a chip, or a chip system, or a circuit). The second communication device and the third communication device in the following embodiments may be access network devices in the network architecture shown in FIG1 , and the function performed by the second communication device in this embodiment may also be performed by a device in the second communication device (e.g., a chip, or a chip system, or a circuit). The function performed by the third communication device in this embodiment may also be performed by a device in the third communication device (e.g., a chip, or a chip system, or a circuit). The embodiments of this application are uniformly described here and will not be repeated later.

[0126] The following describes a communication method provided by an embodiment of the present application. Referring to FIG2 , FIG2 is an interactive diagram of a communication method provided by an embodiment of the present application. As shown in FIG2 , the communication method may include the following steps.

[0127] Step S201: The target second communication device sends information about the target second communication device to the third communication device. Correspondingly, the third communication device receives the information about the target second communication device sent by the target second communication device.

[0128] It is understood that one or more second communication devices may send second communication device information to a third communication device. Accordingly, the third communication device receives information from one or more second communication devices. It is understood that the target second communication device may be the second communication device corresponding to the cell in which the first communication device desires to reside, among the one or more second communication devices. In other words, the first communication device desires to reside in the cell corresponding to the target second communication device. The number of target second communication devices may be one or more, and this application does not impose any limitation thereto.

[0129] The cell corresponding to the second communication device is a cell that does not periodically transmit the system information block SIB1. The cell corresponding to the third communication device is a cell that periodically transmits SIB1. The information of the second communication device may include identification information of the second communication device and an indication that the second communication device is a cell that does not periodically transmit SIB1. Optionally, the information sent by the second communication device to the third communication device may further include the SIB1 of the second communication device. Optionally, the information sent by the second communication device to the third communication device may further include wakeup signal (WUS) configuration information of the second communication device.

[0130] Step S202: The third communication device sends the first information and / or the second information to the first communication device. Correspondingly, the first communication device receives the first information and / or the second information.

[0131] The first information includes WUS configuration information of the third communication device, and the second information includes list information.

[0132] The WUS configuration information of the third communication device in the first message is used by the first communication device to send a WUS to request a first system message or first signaling from the third communication device. The first system message or first signaling includes SIB1s of one or more second communication devices. For example, the first system message may be SIBX. The following explanation assumes that the first system message is SIBX.

[0133] The list information includes identification information of one or more second communication devices. Thus, the first communication device can determine which cells corresponding to the communication devices are NES cells based on the list information. The WUS configuration information of the third communication device is the random access resources configured by the third communication device itself, for example, physical random access channel (PRACH) information. The first information and / or the second information may be included in the ninth system message of the third communication device. For example, the ninth system message may be SIB1. That is, when the third communication device sends the SIB1 of the third communication device, the first information and / or the second information is sent to the first communication device.

[0134] In a possible implementation, the list information and the WUS configuration information of the third communication device may be sent separately, for example, through two pieces of information or two messages; or included in one piece of information.

[0135] In a possible implementation, the WUS configuration information in the first information may include a correspondence between a random access preamble and one or more second communication devices. Alternatively, the WUS configuration information in the first information may include a correspondence between a random access preamble and one or more second communication devices.

[0136] In a possible implementation, the correspondence between the random access preamble and the one or more second communication devices may be determined by the third communication device. In other words, the third communication device may determine the correspondence between the random access preamble and the one or more second communication devices.

[0137] The manner in which the third communication device determines the correspondence between the random access preamble and one or more second communication devices may include the following:

[0138] Method 1: Assign random access preamble codes corresponding to one or more random access channel opportunities (RACH Occasion, RO) to one or more second communication devices.

[0139] Optionally, the random access channel opportunity is a random access time slot (slot) random access opportunity; the optional random access preamble code is a non-contention preamble code corresponding to the random access channel opportunity; optionally, the random access channel opportunity corresponds to an SSB.

[0140] Optionally, N preambles starting with the first available random access preamble of the RO correspond to one or more second communication devices, where N is greater than or equal to 1.

[0141] Optionally, the random access channel opportunity is a random access opportunity of a random access period.

[0142] Optionally, when the random access preamble is a contention preamble, all contention preambles on the RO may correspond to all second communication devices.

[0143] Please refer to Figure 3, which is a schematic diagram of the correspondence between a random access preamble and a second communication device provided in an embodiment of the present application. It can be seen that a plurality of ROs may be included in a slot of PRACH, for example, RO#0 and RO#1. In Figure 3, the random access preambles #0 to #24 included in RO#0 are contention preambles (i.e., contention random access preambles), and #25 to #32 are non-contention preambles (i.e., non-contention random access preambles). The second communication device includes second communication devices #0 to #3, so the non-contention preambles #25 to #28 may be respectively corresponded to the second communication devices #0 to #3. Alternatively, a plurality of ROs may be included in one cycle of PRACH, for example, RO#0 and RO#1. In Figure 3, the random access preamble codes #0 to #24 included in RO#0 are contention preamble codes (i.e., contention random access preamble codes), and #25 to #32 are non-contention preamble codes (i.e., non-contention random access preamble codes). The second communication device includes second communication devices #0 to #3, so the non-contention preamble codes #25 to #28 can be respectively corresponded to the second communication devices #0 to #3.

[0144] Optionally, one random access preamble may correspond to one or more second communication devices. For example, non-contention preamble #25 may correspond to second communication devices #0 and #1.

[0145] Optionally, if the number of second communication devices exceeds the number of non-contention random access preambles corresponding to one RO, the non-contention random access preamble in the next RO in the slot can be sequentially assigned to the second communication devices that have not yet been assigned. For example, in Figure 3, RO#0 includes eight non-contention preambles, namely non-contention preambles #25 to #32. If the number of second communication devices is ten, these are second communication devices #0 to #9. If the non-contention preambles correspond one-to-one with the second communication devices, the eight non-contention preambles in RO#0 are insufficient to assign to all ten second communication devices. Therefore, the eight non-contention preambles #25 to #32 in RO#0 can be assigned to second communication devices #0 to #7, respectively, and the two non-contention preambles in the next RO after RO#0, namely RO#1, can be assigned to second communication devices #8 and #9, respectively.

[0146] In one embodiment, the RO reserved preamble code can be indexed, and the reserved preamble code on the first RO corresponds to one or more second communication devices. In this case, one RO corresponds to one SSB, and then one reserved preamble code on the RO can be used, that is, the first reserved preamble code corresponding to the SSB on the RO. In this case, the reserved preamble code corresponding to the SSB can correspond to one or more second communication devices; if the total number of reserved preamble codes available on the first RO is less than the number of second communication devices, the preamble code reserved for the second RO is indexed according to the above method.

[0147] In one embodiment, an index may be defined starting from the Nth RO within a random access time slot or cycle, and the random access preamble corresponding to the Nth random access channel opportunity (RACH Occasion, RO) may be sequentially associated with one or more second communication devices. The specific implementation method is as described above. Method 2: One RO corresponds to one or more synchronization signals and physical broadcast channel (physical broadcast channel, PBCH) blocks (synchronization signal and PBCH block, SSB), and one SSB corresponds to one or more random access preambles. The random access preamble corresponding to the SSB is associated with one or more second communication devices.

[0148] Optionally, the random access preamble may be a non-contention random access preamble or a contention random access preamble.

[0149] Optionally, N preambles starting with the first available random access preamble of the RO correspond to one or more second communication devices, where N is greater than or equal to 1. As shown in Figure 4, Figure 4 is a schematic diagram of another correspondence relationship between random access preambles and second communication devices provided in an embodiment of the present application. In Figure 4, an RO includes 64 random access preambles (preambles), and an RO corresponds to two SSBs, namely SSB1 and SSB2. The number of contention random access preambles corresponding to SSB1 (SSB1 contention preambles) is 20, namely, #0 to #19; the number of non-contention random access preambles corresponding to SSB1 (SSB1 non-contention preambles) is 4, namely, #20 to #23; the number of contention random access preambles corresponding to SSB2 (SSB2 contention preambles) is 20, namely, #24 to #43; the number of non-contention random access preambles corresponding to SSB1 (SSB1 non-contention preambles) is 4, namely, #44 to #47; and the RO also includes 16 reserved preambles, namely, #48 to 63. Therefore, non-contention preambles #20 to #23 corresponding to SSB1 and non-contention preambles #44 to #47 corresponding to SSB2 can be used to correspond to one or more second communication devices.

[0150] In one embodiment, the RO reserved preamble code can be indexed, that is, the reserved preamble code on the RO can be corresponded to one or more second communication devices. In this case, it can be determined based on the number of SSBs, and each SSB on the RO can correspond to a reserved preamble code respectively (for example, if an RO has SSB1 and SSB2, then the two reserved preamble codes on the RO can be used, that is, SSB1 on the RO corresponds to the first reserved preamble code, and SSB2 on the RO corresponds to the second reserved preamble code). In this case, the reserved preamble code corresponding to SSB1 and the reserved preamble code corresponding to SSB2 can be used to correspond to one or more second communication devices; if the total number of available reserved preamble codes on the first RO is less than the number of second communication devices, the reserved preamble code of the second RO can be indexed according to the above method.

[0151] Method three: Among the random access preambles corresponding to one or more random access channel opportunities RO, a preset first random access preamble is associated with one or more second communication devices.

[0152] Optionally, the random access preamble is a non-contention preamble.

[0153] Optionally, N preamble codes starting with a preset first random access preamble code correspond to one or more second communication devices, where N is greater than or equal to 1.

[0154] That is to say, based on method one, instead of starting from the first non-competitive random access preamble corresponding to the RO and corresponding the non-competitive random access preamble to the second communication device in sequence, one of the non-competitive random access preambles can be designated as the starting random access preamble, and the starting random access preamble and the non-competitive random access preamble after the starting random access preamble can be corresponding to the second communication device in sequence.

[0155] As shown in Figure 5, Figure 5 is a schematic diagram of another correspondence relationship between random access preambles and second communication devices provided by an embodiment of the present application. In Figure 5, the non-contention preambles corresponding to RO#0 are #25 to #32, and #27 is designated as the starting random access preamble, so that the non-contention preambles #27 and #28 corresponding to RO#0 correspond to second communication devices #0 and #1, respectively.

[0156] Optionally, if the number of second communication devices does not exceed the number of non-contention preambles corresponding to one RO, the non-contention preambles corresponding to one or more ROs can be made to correspond to the second communication devices. As shown in Figure 5, the non-contention preambles corresponding to RO#0 are #25 to #32, with #27 designated as the starting random access preamble. The non-contention preambles corresponding to RO#1 are #25 to #32, with #27 designated as the starting random access preamble. Second communication devices #0 to #1 can correspond to non-contention preambles #27 and #28 corresponding to RO#0, respectively, and second communication devices #2 to #3 can correspond to non-contention preambles #27 and #28 corresponding to RO#1, respectively.

[0157] In one embodiment, the RO reserved preamble code can be indexed, that is, the reserved preamble code on an RO can be corresponded to one or more second communication devices. In this case, it can be determined according to the number of SSBs, and each SSB on the RO can correspond to a reserved preamble code respectively (for example, if an RO has SSB1 and SSB2, then the two reserved preamble codes on the RO can be used, that is, SSB1 on the RO corresponds to the preset first preamble code, and SSB2 on the RO corresponds to the second preamble code starting from the preset first preamble code). In this case, the reserved preamble code corresponding to SSB1 and the reserved preamble code corresponding to SSB2 can be used to correspond to one or more second communication devices. Specifically, the reserved preamble code on each RO can be, as mentioned above, SSB1 (indexed as 0 in an RO) corresponds to preamble start index (preset first preamble code) + 0 (index of SSB); SSB2 (indexed as 1 in an RO) corresponds to preamble start index + 1 in the reserved preamble code. In one example, indexing is performed according to the number of second communication devices, for example, four second communication devices, wherein the preamble start index of SSB1 (preset first preamble) + 0 (SSB index) + cell index (0, 1, 2, or 3) is used, and the preamble start index of SSB1 (preset first preamble) + 0 (SSB index) + 4 (number of cells) + cell index (0, 1, 2, or 3) is used. The preamble corresponding to cell0 is the preamble obtained with cell index 0 in SSB1 and / or SBB2, and the preamble corresponding to cell1 is the preamble obtained with cell index 1 in SSB1 and / or SBB2, and so on. The above cells are second communication devices, and the preambles corresponding to the second communication devices can be related to one or more of the SSB index, the preset first preamble, the number of second communication devices, and the second communication device index. If the total number of reserved preambles available on the first RO is less than the number of second communication devices, the reserved preambles of the second RO can be indexed according to the above method.

[0158] Method 4: The random access preamble corresponding to the SSB and the preset first random access preamble are matched with one or more second communication devices.

[0159] Optionally, the random access preamble may be a non-contention preamble or a contention preamble.

[0160] Optionally, N preamble codes starting with the first random access preamble code of SSB correspond to one or more second communication devices, and N is greater than or equal to 1.

[0161] That is to say, based on method one, instead of starting from the first non-competitive random access preamble corresponding to the SSB and corresponding the non-competitive random access preamble to the second communication device in sequence, one of the non-competitive random access preambles can be designated as the starting random access preamble, and the starting random access preamble and the non-competitive random access preamble after the starting random access preamble can be corresponding to the second communication device in sequence.

[0162] For example, as shown in FIG6 , FIG6 is a schematic diagram of another correspondence between a random access preamble and a second communication device provided in an embodiment of the present application. In FIG6 , the non-contention preambles #20 to #23 corresponding to SSB1 and the non-contention preambles #44 to #47 corresponding to SSB2 can be used to correspond to one or more second communication devices. If the starting random access preamble in the non-contention random access preamble configured to correspond to the second communication device is #21, the non-contention preambles #21 to #23 corresponding to SSB1 and the non-contention preambles #44 to #47 corresponding to SSB2 can be used to correspond to one or more second communication devices. If the starting random access preamble in the non-contention random access preamble configured to correspond to the second communication device is #21 and #45, the non-contention preambles #21 to #23 corresponding to SSB1 and the non-contention preambles #45 to #47 corresponding to SSB2 can be used to correspond to one or more second communication devices.

[0163] The non-contention preamble and the reserved preamble are dedicated random access resources, which are random access resources allocated on the RO specifically for corresponding to one or more second communication devices. The one or more second communication devices may be all the communication devices in the list information.

[0164] In one possible implementation, one or more second communication devices correspond to random access resources. Specifically, a first communication device may send a system information request to a third communication device, requesting the third communication device to allocate random access resources corresponding to the one or more second communication resources and to allocate random access resources that carry system information. Thus, upon receiving the system information, the first communication device can obtain the correspondence between the random access resources and the one or more second communication resources. In one possible implementation, the first information may include a correspondence between a random access preamble and a first system message from the third communication device.

[0165] In a possible implementation manner, the WUS configuration information in the first information may include a correspondence between a random access preamble code and a first system message.

[0166] In a possible implementation, the correspondence between the random access preamble and the first system message may be determined by the third communication apparatus. In other words, the third communication apparatus may determine the correspondence between the random access preamble and the first system message.

[0167] Taking the first system message as SIBX as an example, the manner in which the third communication device determines the correspondence between the random access preamble code and the first system message may include the following:

[0168] Method 1: Mapping the random access preamble codes corresponding to one or more random access channel opportunities (RACH Occasion, RO) to one or more SIBXs.

[0169] Optionally, the random access channel opportunity is a random access time slot (slot) random access opportunity; the optional random access preamble code is a non-contention preamble code corresponding to the random access channel opportunity; optionally, the random access channel opportunity corresponds to an SSB.

[0170] Optionally, the random access channel opportunity is a random access opportunity of a random access period.

[0171] Optionally, when the random access preamble is a contention preamble, all contention preambles on the RO may correspond to SIBX.

[0172] For example, within a PRACH cycle, multiple ROs may be included, such as RO#0 and RO#1. If random access preambles #0 to #24 included in RO#0 are contention preambles (i.e., contention random access preambles), #25 to #32 are non-contention preambles (i.e., non-contention random access preambles), and SIBX includes SIBX#0 to #3, non-contention preambles #25 to #28 may be mapped to SIBX#0 to #3, respectively.

[0173] Optionally, a random access preamble may correspond to one or more SIBXs. For example, non-contention preamble #25 may correspond to SIBXs #0 and #1.

[0174] Optionally, if the number of SIBXs exceeds the number of non-contention random access preambles corresponding to one RO, the non-contention random access preambles in the next RO in the slot can be sequentially matched to the unmatched SIBXs. For example, if RO#0 includes 8 non-contention preambles, they are non-contention preambles #25 to #32. If the number of SIBXs is 10, they are SIBXs #0 to #9. If the non-contention preambles and SIBXs are in a one-to-one correspondence, the 8 non-contention preambles in RO#0 are not enough to match 10 SIBXs. Therefore, the 8 non-contention preambles #25 to #32 in RO#0 can be matched to SIBXs #0 to #7, respectively, and the 2 non-contention preambles in the next RO after RO#0, that is, RO#1, can be matched to SIBXs #8 and #9, respectively.

[0175] In one embodiment, the RO reserved preamble code can be indexed, and the reserved preamble code on the first RO corresponds to one or more SIBXs. In this case, one RO corresponds to one SSB, and then one reserved preamble code on the RO can be used, that is, the first reserved preamble code corresponding to the SSB on the RO. In this case, the reserved preamble code corresponding to the SSB can correspond to one or more SIBXs; if the total number of reserved preamble codes available on the first RO is less than the number of SIBXs, the reserved preamble code of the second RO is indexed according to the above method.

[0176] In one embodiment, a random access slot or cycle may be defined to be indexed starting from the Nth RO, and the random access preamble corresponding to the Nth random access channel opportunity (RACH Occasion, RO) may be sequentially associated with one or more SIBXs.

[0177] Method 2: One RO corresponds to one or more synchronization signals and physical broadcast channel (PBCH) blocks (SSBs), and one SSB corresponds to one or more random access preambles. The random access preamble corresponding to the SSB is mapped to one or more SIBXs.

[0178] Optionally, the random access preamble may be a non-contention random access preamble.

[0179] For example, an RO can include 64 random access preambles (preambles), and one RO corresponds to two SSBs, SSB1 and SSB2. The number of contention-based random access preambles corresponding to SSB1 (SSB1 contention-based preambles) is 20, numbered #0 to #19; the number of non-contention-based random access preambles corresponding to SSB1 (SSB1 non-contention-based preambles) is 4, numbered #20 to #23; the number of contention-based random access preambles corresponding to SSB2 (SSB2 contention-based preambles) is 20, numbered #24 to #43; and the number of non-contention-based random access preambles corresponding to SSB1 (SSB1 non-contention-based preambles) is 4, numbered #44 to #47. The RO also includes 16 reserved preambles, numbered #48 to #63. Therefore, non-contention-based preambles #20 to #23 corresponding to SSB1 and non-contention-based preambles #44 to #47 corresponding to SSB2 can be used to correspond to one or more SIBXs.

[0180] In one embodiment, the RO reserved preamble code can be indexed, that is, the reserved preamble code on the RO can be corresponded to one or more SIBXs. In this case, it can be determined based on the number of SSBs, and each SSB on the RO can correspond to a reserved preamble code respectively (for example, if an RO has SSB1 and SSB2, then the two reserved preamble codes on the RO can be used, that is, SSB1 on the RO corresponds to the first reserved preamble code, and SSB2 on the RO corresponds to the second reserved preamble code). In this case, the reserved preamble code corresponding to SSB1 and the reserved preamble code corresponding to SSB2 can be used to correspond to one or more SIBXs; if the total number of available reserved preamble codes on the first RO is less than the number of SIBXs, the reserved preamble code of the second RO can be indexed according to the above method.

[0181] Method 3: Among the random access preambles corresponding to one or more random access channel opportunities RO, a preset first random access preamble is matched with one or more SIBXs.

[0182] Optionally, the random access preamble is a non-contention preamble.

[0183] That is to say, based on method one, instead of starting from the first non-competitive random access preamble corresponding to RO and corresponding the non-competitive random access preambles to SIBX in sequence, one of the non-competitive random access preambles can be designated as the starting random access preamble, and the starting random access preamble and the non-competitive random access preamble after the starting random access preamble can be corresponding to SIBX in sequence.

[0184] For example, if the non-contention preamble codes corresponding to RO#0 are #25 to #32, #27 is designated as the starting random access preamble code, and SIBX includes SIBX#0 to #3, so that the non-contention preamble codes #27 and #28 corresponding to RO#0 can correspond to SIBX#0 and #1 respectively.

[0185] Optionally, if the number of second communication devices does not exceed the number of non-contention preambles corresponding to one RO, the non-contention preambles corresponding to one or more ROs may be made to correspond to SIBXs, respectively. For example, if the non-contention preambles corresponding to RO#0 are #25 to #32, #27 is designated as the starting random access preamble, and the non-contention preambles corresponding to RO#1 are #25 to #32, #27 is designated as the starting random access preamble, SIBX#0 to #1 may correspond to non-contention preambles #27 and #28 corresponding to RO#0, respectively, and SIBX#2 to #3 may correspond to non-contention preambles #27 and #28 corresponding to RO#1, respectively.

[0186] In one embodiment, the RO reserved preamble code can be indexed, that is, the reserved preamble code on an RO can be corresponded to one or more SIBXs. In this case, it can be determined based on the number of SSBs, and each SSB on the RO can correspond to a reserved preamble code respectively (for example, if an RO has SSB1 and SSB2, the two reserved preamble codes on the RO can be used, that is, SSB1 on the RO corresponds to the first reserved preamble code, and SSB2 on the RO corresponds to the second reserved preamble code). In this case, the reserved preamble code corresponding to SSB1 and the reserved preamble code corresponding to SSB2 can be used to correspond to one or more SIBXs; if the total number of reserved preamble codes available on the first RO is less than the number of SIBXs, the reserved preamble code of the second RO can be indexed according to the above method.

[0187] Method 4: The random access preamble corresponding to the SSB is mapped to the preset first random access preamble with one or more SIBXs.

[0188] Optionally, the random access preamble may be a non-contention preamble.

[0189] That is to say, based on method one, instead of starting from the first non-competitive random access preamble corresponding to the SSB and corresponding the non-competitive random access preamble to the second communication device in sequence, one of the non-competitive random access preambles can be designated as the starting random access preamble, and the starting random access preamble and the non-competitive random access preamble after the starting random access preamble can be corresponding to SIBX in sequence.

[0190] For example, if there are two SSBs on the RO, namely SSB1 and SSB2, the non-contention preambles #20 to #23 corresponding to SSB1 and the non-contention preambles #44 to #47 corresponding to SSB2 can be used to correspond to one or more SIBXs. If the starting random access preamble in the non-contention random access preamble configured to correspond to the SIBX is #21, the non-contention preambles #21 to #23 corresponding to SSB1 and the non-contention preambles #44 to #47 corresponding to SSB2 can be used to correspond to one or more SIBXs. If the starting random access preamble in the non-contention random access preamble configured to correspond to the SIBX is #21 and #45, the non-contention preambles #21 to #23 corresponding to SSB1 and the non-contention preambles #45 to #47 corresponding to SSB2 can be used to correspond to one or more SIBXs.

[0191] The above-mentioned non-contention preamble and reserved preamble are dedicated random access resources, which are random access resources allocated on the RO and dedicated to corresponding to one or more SIBXs.

[0192] After receiving the first information and / or the second information, the first communication device can obtain list information including one or more second communication devices, so that the target second communication device can be determined based on the communication quality between each second communication device and the first communication device, such as the downlink quality.

[0193] Exemplarily, among the one or more second communication apparatuses included in the list information, one or more second communication apparatuses with better downlink quality may be determined as target second communication apparatuses.

[0194] It should be noted that when the third communication device only sends the first information, the correspondence with the second communication device can be included in the WUS configuration information of the first information, so that the first communication device can indirectly obtain list information including one or more second communication devices.

[0195] Step S203: The first communication device sends a first request message to the third communication device according to the WUS configuration information of the third communication device. Correspondingly, the third communication device receives the first request message.

[0196] The first request message is used to request the SIB1 of the target second communication device. In other words, it requests the third communication device to send the SIB1 of the target second communication device. The first request message may be a WUS.

[0197] In a possible implementation manner, if the first information includes a correspondence between a random access preamble and one or more second communication devices, the first request message includes a random access preamble corresponding to the target second communication device.

[0198] The first communication device sending the first request message to the third communication device based on the WUS configuration information of the third communication device may specifically include: sending the first request message to the third communication device based on the WUS configuration information of the third communication device and the correspondence between the random access preamble and the one or more second communication devices, wherein the first request message is used to request the third communication device to send first signaling including the SIB1 of the target second communication device. The first signaling may be a first system message, for example, the first system message may be SIBX; the first signaling may be dedicated signaling, such as an RRC reconfiguration message, a MAC CE, or a DCI. The first signaling includes the SIB1 of the target second communication device.

[0199] In this case, the first communication device may send the first request message via MSG1-based transmission. In this case, the first request message is specifically used to request that the SIB1 of the target second communication device be included in the SIBX.

[0200] Specifically, the first communication device sends MSG1 (first request message) to the third communication device through MSG1-based communication to request that SIB1 of the target second communication device be included in SIBX.

[0201] In a possible implementation, if the first information includes a correspondence between a random access preamble and a SIBX, the first request message includes: a random access preamble corresponding to the SIBX of SIB1 including one or more second communication devices.

[0202] The first communication device sends a first request message to the third communication device according to the WUS configuration information of the third communication device. Specifically, it can be as follows: according to the WUS configuration information of the third communication device and the correspondence between the random access preamble code and the SIBX of the third communication device, the first request message is used to request the SIB1 of one or more second communication devices, and the SIB1 of one or more second communication devices is included in the SIBX. Further, the first request message can instruct the third communication device to send the SIB1 of the target second communication device, and the SIB1 of the target second communication device is included in the SIBX.

[0203] In this case, the first communication device can send the first request message via MSG1-based or MSG3-based messaging. In this case, the first request message specifically requests a SIBX, which includes the SIB1s of one or more second communication devices. In other words, the first request message specifically requests the SIB1s of one or more second communication devices. The third communication device includes the SIB1s of the one or more second communication devices in the SIBX and sends it to the first communication device.

[0204] In a possible implementation manner, the first communication device sends the first request message via MSG1-based.

[0205] Specifically, the first communication device sends MSG1 (a first request message) to the third communication device on an MSG1-based basis to request a SIBX. The SIBX includes the SIB1s of one or more second communication devices. In this case, the SIBX includes the SIB1s of all second communication devices in the list information. Furthermore, the first communication device can send MSG3 on an MSG1-based basis. In this case, MSG3 includes the identification information of the target second communication device, thereby requesting that the SIBX include the SIB1 of the target second communication device. By sending MSG3 including the identification of the target second communication device, the SIBX sent by the third communication device can include only the SIB1 of the target second communication device instead of the SIB1 of all second communication devices, thereby saving communication resources.

[0206] In a possible implementation manner, the first communication device sends the first request message through MSG3-based.

[0207] Specifically, the first communication device sends MSG1 (a first request message) to the third communication device via MSG3-based communication. After receiving MSG1, the third communication device sends a random access response (RAR). After receiving the RAR, the first communication device sends MSG3 to request a SIBX from the third communication device. The SIBX includes the SIB1 of one or more second communication devices. Furthermore, MSG3 can include identification information of the target second communication device, thereby further requesting that the SIBX include the SIB1 of the target second communication device. By sending MSG3 including the identification of the target second communication device, the SIBX sent by the third communication device can include only the SIB1 of the target second communication device rather than the SIB1 of all second communication devices, thereby saving communication resources.

[0208] In a possible implementation manner, the first communication device sends the first request message through MSG3-based.

[0209] Specifically, the first communication device sends MSG1 (contention random access preamble) to the third communication device via MSG3-based communication. After receiving MSG1, the third communication device sends a random access response (RAR). After receiving the RAR, the first communication device sends MSG3 (a first request message) to request a SIBX from the third communication device. The SIBX includes the SIB1 of one or more second communication devices. In this case, the SIBX includes the SIB1 of all second communication devices in the list information. Furthermore, MSG3 may also include identification information of the target second communication device, thereby further requesting that the SIBX include the SIB1 of the target second communication device. By sending MSG3 including the identification of the target second communication device, the SIBX sent by the third communication device only includes the SIB1 of the target second communication device, rather than the SIB1 of all second communication devices, thereby saving communication resources. In one case, MSG3 may only include the identification information of the target second communication device. After receiving the MSG3, the third communication device may directly include the SIB1 of the target second communication device in the SIBX.

[0210] In a possible implementation manner, the one or more second communication devices correspond to random access resources, and the first request message is included in the random access resources.

[0211] Step S204: The third communication device sends a first system message or first signaling according to the first request message. Correspondingly, the first communication device receives the first system message or first signaling. The first system message includes the SIB1 of the target second communication device. For example, the first system message can be SIBX.

[0212] In one possible implementation, when the first request message includes the random access preamble corresponding to the target second communication device, the third communication device may determine the target second communication device based on the random access preamble corresponding to the target second communication device and the correspondence between the random access preamble and the second communication device. Thus, the SIB1 of the target second communication device may be sent in the SIBX.

[0213] In one possible implementation, when the first request message is included in the random access resource, the third communication device can determine the target second communication device based on the random access resource including the first request message and the correspondence between the random access resource and the second communication device, so that the SIB1 of the target second communication device can be sent in the SIBX.

[0214] In one possible implementation, when the first request message includes a random access preamble corresponding to the SIBX of the third communication device, the third communication device may determine to transmit the SIB1 of one or more second communication devices in the SIBX based on the random access preamble corresponding to the SIBX of the third communication device and the correspondence between the SIBX of the third communication device and the random access preamble. The SIB1 of the second communication device included in the SIBX may be the SIB1 of all second communication devices in the list indicated by the first information. It is understood that the one or more second communication devices include the target second communication device. Therefore, the transmitted SIBX includes the SIB1 of the first or more second communication devices, which also includes the SIB1 of the target second communication device. Furthermore, based on MSG3 including the target second communication device, the third communication device may determine to transmit the SIB1 of the target second communication device in the SIBX, rather than the SIB1 of all second communication devices in the list, thereby saving communication resources.

[0215] Please refer to Figure 7, which is an interactive diagram of another communication method provided by an embodiment of the present application. As shown in Figure 7, the communication method may include the following steps.

[0216] Step S701: The target second communication device sends information about the target second communication device to the third communication device. Correspondingly, the third communication device receives the information about the target second communication device sent by the target second communication device.

[0217] Step S702: The third communication device sends the second information and / or the third information to the first communication device. Correspondingly, the first communication device receives the second information and / or the third information.

[0218] The third information includes WUS configuration information of the third communication device. The WUS configuration information of the third communication device in the third information is used by the first communication device to send a WUS to request SIB1 of the second communication device.

[0219] In a possible implementation manner, the WUS configuration information in the third information may include a correspondence between a random access preamble code and one or more second communication devices.

[0220] The correspondence between the random access preamble and one or more second communication devices may refer to the several ways in which the third communication device determines the correspondence between the random access preamble and one or more second communication devices in step S202, which will not be described in detail here.

[0221] In one possible implementation, the WUS configuration information in the third information may include a correspondence between the random access preamble and the SIB1 requesting the second communication device. Alternatively, the WUS configuration information in the third information may include a correspondence between the random access preamble and the list information. In other words, the random access preamble corresponds to all second communication devices in the list information.

[0222] Requesting the SIB1 of the second communication device means not distinguishing which second communication device's SIB1 is being requested, but rather requesting the SIB1 function of the second communication device. The correspondence between the random access preamble and the SIB1 of the requested second communication device can refer to the several methods for the third communication device to determine the correspondence between the random access preamble and SIBX in step S202 above, which will not be repeated here. After receiving the second information and / or the third information, the first communication device can obtain list information including one or more second communication devices, thereby determining the target second communication device based on the communication quality between each second communication device and the first communication device, such as the downlink quality.

[0223] Exemplarily, among the one or more second communication apparatuses included in the list information, one or more second communication apparatuses with better downlink quality may be determined as target second communication apparatuses.

[0224] It should be noted that when the third communication device only sends the third information, the WUS configuration information of the third information may include the correspondence with the second communication device, so that the first communication device can indirectly obtain list information including one or more second communication devices.

[0225] Step S703: The first communication device sends a first request message to the third communication device according to the WUS configuration information of the third communication device. Correspondingly, the third communication device receives the first request message.

[0226] The first request message is used to request the SIB1 of the target second communication device. The first request message may be a WUS.

[0227] In a possible implementation manner, if the first information includes a correspondence between a random access preamble and one or more second communication devices, the first request message includes a random access preamble corresponding to the target second communication device.

[0228] The first communication device sends a first request message to the third communication device according to the WUS configuration information of the third communication device. Specifically, it can be: according to the WUS configuration information of the third communication device and the correspondence between the random access preamble code and one or more second communication devices, the first request message is used to request the SIB1 of the target second communication device.

[0229] In this case, the first communication device may send the first request message via MSG1-based transmission. In this case, the first request message is specifically used to send the SIB1 of the target second communication device.

[0230] Specifically, the first communication device sends MSG1 (first request message) to the third communication device via MSG1-based to request SIB1 of the target second communication device.

[0231] In a possible implementation, if the first information includes a correspondence between a random access preamble and the SIB1 requested of the second communication device, the first request message includes: a random access preamble corresponding to the SIB1 requested of the second communication device.

[0232] The first communication device sending the first request message to the third communication device based on the WUS configuration information of the third communication device may specifically include: sending the first request message to the third communication device based on the WUS configuration information of the third communication device and the correspondence between the random access preamble and the SIB1 requested for the second communication device, where the first request message is used to request the SIB1 of the second communication device. Furthermore, the SIB1 of the target second communication device may be instructed to be sent. After receiving the first request message, the third communication device may instruct the second communication device to send the SIB1, and after receiving the instruction, the second communication device sends the SIB1.

[0233] In this case, the first communication device may send the first request message via MSG1-based or MSG3-based methods, and may specifically request the third communication device to send one or more SIB1s of the second communication device.

[0234] In a possible implementation manner, the first communication device sends the first request message via MSG1-based.

[0235] Specifically, the first communication device sends MSG1 (a first request message) to the third communication device on an MSG1-based basis to request the SIB1 of one or more second communication devices. Furthermore, the first communication device can send MSG3 on an MSG1-based basis. In this case, MSG3 includes the identification information of the target second communication device, thereby requesting the SIB1 of the target second communication device. By sending MSG3 including the identification of the target second communication device, the target second communication device can be caused to send SIB1 instead of all second communication devices, thereby saving communication resources.

[0236] In a possible implementation manner, the first communication device sends the first request message through MSG3-based.

[0237] Specifically, the first communication device sends MSG1 (a first request message) to the third communication device via MSG3-based messaging. After receiving MSG1, the third communication device sends a random access response (RAR). After receiving the RAR, the first communication device sends MSG3 to request the SIB1 of one or more second communication devices from the third communication device. Furthermore, MSG3 can include identification information of the target second communication device, thereby further requesting the SIB1 of the target second communication device. By sending MSG3 including the identification of the target second communication device, the target second communication device can be made to send SIB1 instead of all second communication devices, thereby saving communication resources.

[0238] In a possible implementation manner, the first communication device sends the first request message through MSG3-based.

[0239] Specifically, the first communication device sends MSG1 (contention random access preamble) to the third communication device via MSG3-based. After receiving MSG1, the third communication device sends a random access response (RAR). After receiving the RAR, the first communication device sends MSG3 (first request message) to request the SIB1 of the second communication device from the third communication device. In this case, all second communication devices send SIB1. Furthermore, MSG3 can also include identification information of the target second communication device, thereby further obtaining the SIB1 of the target second communication device. By sending MSG3 including the identification of the target second communication device, the target second communication device can be made to send SIB1 instead of all second communication devices sending SIB1, thereby saving communication resources. In one case, MSG3 can only include the identification information of the target second communication device. After receiving the MSG3, the third communication device causes the target second communication device to send SIB1.

[0240] In a possible implementation manner, the one or more second communication devices correspond to random access resources, and the first request message is included in the random access resources.

[0241] Step S704: The third communication device sends a third request message to the target second communication device according to the first request message. Correspondingly, the target second communication device receives the third request message.

[0242] The third request message is used to request the target second communication apparatus to send the SIB1 of the target second communication apparatus.

[0243] In one possible implementation, when the first request message includes the random access preamble corresponding to the target second communication device, the third communication device may determine the target second communication device based on the random access preamble corresponding to the target second communication device and the correspondence between the random access preamble and the second communication device, and may thereby send the third request message to the target second communication device.

[0244] In one possible implementation, when the first request message is included in the random access resource, the third communication device can determine the target second communication device based on the random access resource including the first request message and the correspondence between the random access resource and the second communication device, thereby sending the third request message to the target second communication device.

[0245] In one possible implementation, when the first request message includes a random access preamble corresponding to the SIBX of the third communication device, the random access preamble is used to instruct the third communication device to send a third request message, requesting one or more second communication devices to send the SIB1 of one or more second communication devices. The request in the third request message for one or more second communication devices to send the SIB1 of one or more second communication devices may be a request for all second communication devices in the list indicated by the first information to send the SIB1 of the second communication device. It is understandable that the one or more second communication devices include the target second communication device. Therefore, requesting the first or more second communication devices to send the SIB1 of one or more second communication devices also includes requesting the target second communication device to send the SIB1 of the target second communication device.

[0246] Step S705: The target second communication device sends the SIB1 of the target second communication device. Correspondingly, the first communication device receives the SIB1 of the target second communication device sent by the target second communication device.

[0247] Please refer to Figure 8, which is an interactive diagram of another communication method provided by an embodiment of the present application. As shown in Figure 8, the communication method may include the following steps.

[0248] Step S801: The target second communication device sends information about the target second communication device to the third communication device. Correspondingly, the third communication device receives the information about the target second communication device sent by the target second communication device.

[0249] The specific implementation of step S801 can be found in the specific implementation of step S201 corresponding to FIG2 , which will not be described in detail here.

[0250] Step S802: The third communication device sends the second information and / or the fourth information to the first communication device. Correspondingly, the first communication device receives the second information and / or the fourth information.

[0251] The second information includes list information including identification information of one or more second communication devices.

[0252] The fourth information is used to configure the first communication device to send a second request message, and the second request message is used to request WUS configuration information of the second communication device. In a possible implementation, the fourth information may also include a correspondence between the random access preamble and one or more second communication devices.

[0253] The correspondence between the random access preamble and one or more second communication devices may refer to the several ways in which the third communication device determines the correspondence between the random access preamble and one or more second communication devices in step S202, which will not be described in detail here.

[0254] In a possible implementation, the fourth information may further include a correspondence between the random access preamble and the SIBX. In this case, the SIBX includes WUS configuration information of the second communication device, and the WUS configuration information is used to request SIB1 from the second communication device.

[0255] The correspondence between the random access preamble and the SIBX may refer to the several ways in which the third communication device determines the correspondence between the random access preamble and the SIBX in the above step S202, which will not be described in detail here.

[0256] After the first communication device receives the second information, the first communication device may determine the target second communication device based on the list information. For specific implementation, refer to step S202 corresponding to FIG. 2 , where the first communication device determines the target second communication device based on the list information in the first information after receiving the first information. This description will not be repeated here.

[0257] After receiving the second information and / or the fourth information, the first communication device can obtain list information including one or more second communication devices, so that the target second communication device can be determined based on the communication quality between each second communication device and the first communication device, such as the downlink quality.

[0258] Exemplarily, among the one or more second communication apparatuses included in the list information, one or more second communication apparatuses with better downlink quality may be determined as target second communication apparatuses.

[0259] Step S803: The first communication device sends a second request message to the third communication device. Correspondingly, the third communication device receives the second request message sent by the first communication device.

[0260] The second request message is used to request a second system message from a third communication device or WUS configuration information for one or more second communication devices. Alternatively, the second request message is used to request the third communication device to send the second system message of the third communication device or to send WUS configuration information for one or more second communication devices. The WUS configuration information for one or more second communication devices is included in the second system message or second signaling. For example, the second system message may be a SIBX.

[0261] In a possible implementation manner, if the first information includes a correspondence between a random access preamble and one or more second communication devices, the first request message includes a random access preamble corresponding to the target second communication device.

[0262] Specifically, the first communication device sends the second request message to the third communication device by sending the second request message to the third communication device according to the correspondence between the random access preamble code and one or more second communication devices, where the second request message is used to request WUS configuration information of the target second communication device.

[0263] In this case, the first communication device may send the second request message via MSG1-based transmission. In this case, the second request message is specifically used to request the third communication device to send the WUS configuration information of the target second communication device.

[0264] Specifically, the first communication device sends MSG1 (second request message) to the third communication device via MSG1-based to request the WUS configuration information of the target second communication device.

[0265] In a possible implementation manner, if the fourth information includes a correspondence between a random access preamble and a SIBX, the second request message may include the random access preamble corresponding to the SIBX.

[0266] The first communication device sending the second request message to the third communication device may specifically include sending the second request message to the third communication device based on a correspondence between the random access preamble and one or more second communication devices, where the second request message is used to request WUS configuration information for the one or more second communication devices. Furthermore, the second request message may instruct the third communication device to send the WUS configuration information of the target second communication device.

[0267] In this case, the first communication device may send the second request message via MSG1-based or MSG3-based. In this case, the second request message is specifically used to request the third communication device to send SIBX, where the SIBX includes WUS configuration information of one or more second communication devices.

[0268] In a possible implementation, the first communication device sends the second request message based on message 1.

[0269] Specifically, the first communication device sends MSG1 (a second request message) based on MSG1 to request the SIBX of the third communication device, thereby requesting the SIBX. The SIBX includes WUS configuration information for one or more second communication devices. In this case, the SIBX includes WUS configuration information for all second communication devices in the list information. Furthermore, the first communication device can send MSG3 based on MSG1, in which case MSG3 includes identification information of the target second communication device. Furthermore, the first communication device can send MSG3 based on MSG1, in which case MSG3 includes identification information of the target second communication device, thereby requesting that the SIBX include the WUS configuration information of the target second communication device. By sending MSG3 including the identification of the target second communication device, the SIBX sent by the third communication device can include only the WUS configuration information of the target second communication device, rather than the WUS configuration information of all second communication devices, thereby saving communication resources.

[0270] In a possible implementation manner, the first communication device sends the first request message through MSG3-based.

[0271] Specifically, the first communication device sends MSG1 (contention random access preamble) to the third communication device via MSG3-based. After receiving MSG1, the third communication device sends a random access response (RAR). After receiving the RAR, the first communication device sends MSG3 (second request message) to request the WSU configuration of the second communication device from the third communication device. In this case, the third communication device will send the WUS configuration of all second communication devices in the list information. Furthermore, MSG3 can also include the identification information of the target second communication device, so that the WUS configuration information of the target second communication device can be further requested. By sending MSG3 including the identification of the target second communication device, the third communication device will send the WUS configuration of the target second communication device, thereby saving communication resources. In one case, MSG3 can only include the identification information of the target second communication device. After the third communication device receives the MSG3, the third communication device will send the WUS configuration of the target second communication device.

[0272] In a possible implementation, the first communication device sends the second request message based on message 3.

[0273] Specifically, the first communication device sends MSG1 (a second request message) to the third communication device based on MSG3-based communication. After receiving MSG1, the third communication device sends a random access response (RAR). After receiving the RAR, the first communication device sends MSG3 to request a SIBX from the third communication device. The SIBX includes WUS configuration information for one or more second communication devices. Furthermore, MSG3 may include identification information of the target second communication device, thereby further requesting that the SIBX include the WUS configuration information of the target second communication device. By sending MSG3 including the identification of the target second communication device, the SIBX sent by the third communication device only includes the WUS configuration information of the target second communication device, rather than the WUS configuration information of all second communication devices, thereby saving communication resources.

[0274] In a possible implementation, the fourth information further includes a correspondence between one or more second communication devices and random access preamble codes, and the second request message further includes a random access preamble code corresponding to the target second communication device.

[0275] In a possible implementation manner, the third communication device determines a correspondence between one or more second communication devices and a random access preamble.

[0276] Specifically, the second information in Figure 2 also includes the correspondence between one or more second communication devices and the random access preamble code, and the implementation method of the third communication device determining the correspondence between one or more second communication devices and the random access preamble code will not be repeated here.

[0277] Step S804: The third communication device sends a second system message or second signaling. Correspondingly, the first communication device receives the second system message sent by the third communication device. For example, the second system message may be SIBX (SIBX of the third communication device).

[0278] After receiving the second request message from the first communication device, the third communication device may send a second system message or a second signaling.

[0279] The second signaling of the third communication device includes WUS configuration information of one or more second communication devices. The second signaling may be RRC signaling, MAC CE, or DCI.

[0280] The SIBX of the third communication device includes the WUS configuration of the target second communication device. The WUS configuration of the second communication device may be PRACH information.

[0281] In one possible implementation, if the first communication device sends the second request message via MSG1-based or MSG2-based, the SIBX sent by the third communication device includes WUS configuration information for one or more second communication devices. The WUS configuration information for the second communication devices included in the SIBX may be WUS configuration information for all second communication devices in the list indicated by the first information. It is understood that the WUS configuration information for one or more second communication devices sent includes the WUS configuration information for the target second communication device. Furthermore, if the first communication device sends the second request message via MSG1-based or MSG3-based, and includes identification information of the target second communication device in MSG3, the SIBX sent by the third communication device includes the WUS configuration information for the target second communication device.

[0282] In one possible implementation, if the second request message also includes a random access preamble corresponding to the target second communication device and a correspondence between one or more second communication devices and the random access preamble, the third communication device determines the target second communication device based on the random access preamble corresponding to the target second communication device, and the correspondence between one or more second communication devices and the random access preamble, so that the SIBX sent by the third communication device includes the WUS configuration information of the target second communication device.

[0283] Step S805: The first communication device sends a first request message to the target second communication device according to the WUS configuration information of the target second communication device. Correspondingly, the target second communication device receives the first request message.

[0284] The first request message is used to request the SIB1 of the target second communication device. The first request message may be a WUS.

[0285] The WUS configuration may be contention random access resources or non-contention random access resources. In one possible implementation, when the WUS is configured for contention random access resources, MSG3 may include first indication information. The first indication information is used to indicate the SIB1 of the target second communication device (or, in other words, to indicate the SIB1 of the cell corresponding to the target second communication device).

[0286] Step S806: The target second communication device sends the SIB1 of the target second communication device. Correspondingly, the first communication device receives the SIB1 sent by the target second communication device.

[0287] Please refer to Figure 9, which is an interactive diagram of another communication method provided by an embodiment of the present application. As shown in Figure 9, the communication method may include the following steps.

[0288] Step S901: The target second communication device sends fifth information. Correspondingly, the first communication device receives the fifth information sent by the target second communication device.

[0289] The fifth information includes WUS configuration information of the target second communication device. The WUS configuration information of the target second communication device may be PRACH information.

[0290] The WUS configuration information of the target second communication device includes the correspondence between the random access preamble and the SIB1 of the target second communication device. Alternatively, the fifth information also includes the correspondence between the random access preamble and the SIB1 of the target second communication device.

[0291] The correspondence between the random access preamble and the SIB1 of the target second communication device can be determined by the target second communication device. That is, the target second communication device can determine the correspondence between the random access preamble and the SIB1 of the target second communication device. The manner in which the target second communication device determines the correspondence between the random access preamble and the SIB1 of the target second communication device can refer to the manner in which the third communication device determines the correspondence between the random access preamble and SIBX / one or more second communication devices, as follows:

[0292] The target second communication device may determine the correspondence between the random access preamble and the SIB1 in the following ways:

[0293] Method 1: Mapping the random access preamble corresponding to one or more random access channel occasions (RACH Occasion, RO) to the SIB1 of the target second communication device.

[0294] Optionally, the random access channel opportunity is a random access time slot (slot) random access opportunity; the optional random access preamble code is a non-contention preamble code corresponding to the random access channel opportunity; optionally, the random access channel opportunity corresponds to an SSB.

[0295] Optionally, the random access channel opportunity is a random access opportunity of a random access period.

[0296] Optionally, when the random access preamble is a contention preamble, all contention preambles on the RO may correspond to the SIB1 of the target second communication device.

[0297] For example, within a PRACH cycle, multiple ROs may be included, such as RO#0 and RO#1. If random access preambles #0 to #24 included in RO#0 are contention preambles (i.e., contention random access preambles), and #25 to #32 are non-contention preambles (i.e., non-contention random access preambles), non-contention preamble #25 may be associated with SIB1 of the target second communication device.

[0298] In one embodiment, the RO reserved preamble code can be indexed, and the reserved preamble code on the first RO corresponds to the SIB1 of the target second communication device. In this case, one RO corresponds to one SSB, and then one reserved preamble code on the RO can be used, that is, the SSB on the RO corresponds to the first reserved preamble code. In this case, the reserved preamble code corresponding to the SSB can correspond to the SIB1 of the target second communication device.

[0299] In one embodiment, a random access slot or cycle may be defined to be indexed starting from the Nth RO, and the random access preamble corresponding to the Nth random access channel occasion (RACH Occasion, RO) may be mapped to the SIB1 of the target second communication device.

[0300] Method 2: One RO corresponds to one or more SSBs, and one SSB corresponds to one or more random access preambles. The random access preamble corresponding to the SSB is matched with the SIB1 of the target second communication device.

[0301] Optionally, the random access preamble may be a non-contention random access preamble.

[0302] For example, an RO can include 64 random access preambles (preambles), and one RO corresponds to two SSBs, SSB1 and SSB2. The number of contention-based random access preambles (SSB1 contention-based preambles) corresponding to SSB1 is 20, numbered #0 to #19; the number of non-contention-based random access preambles (SSB1 non-contention-based preambles) corresponding to SSB1 is 4, numbered #20 to #23; the number of contention-based random access preambles (SSB2 contention-based preambles) corresponding to SSB2 is 20, numbered #24 to #43; and the number of non-contention-based random access preambles (SSB1 non-contention-based preambles) corresponding to SSB1 is 4, numbered #44 to #47. The RO also includes 16 reserved preambles, numbered #48 to #63. Therefore, non-contention-based preambles #20 to #23 corresponding to SSB1 and non-contention-based preambles #44 to #47 corresponding to SSB2 can be used to correspond to SIB1 of the target second communication device.

[0303] In one embodiment, the RO reserved preamble code can be indexed, that is, the reserved preamble code on the RO can be corresponded to the SIB1 of the target second communication device. In this case, it can be determined based on the number of SSBs, and each SSB on the RO can correspond to a reserved preamble code respectively (for example, if an RO has SSB1 and SSB2, the two reserved preamble codes on the RO can be used, that is, SSB1 on the RO corresponds to the first reserved preamble code, and SSB2 on the RO corresponds to the second reserved preamble code).

[0304] Method 3: Among the random access preambles corresponding to one or more random access channel opportunities RO, a preset first random access preamble is matched with one or more SIBXs.

[0305] Optionally, the random access preamble is a non-contention preamble.

[0306] That is to say, based on method one, instead of starting from the first non-competitive random access preamble corresponding to RO and corresponding the non-competitive random access preambles to SIBX in sequence, one of the non-competitive random access preambles can be designated as the starting random access preamble, and the starting random access preamble and the non-competitive random access preamble after the starting random access preamble can be corresponding to SIBX in sequence.

[0307] For example, if the non-contention preamble codes corresponding to RO#0 are #25 to #32, #27 is designated as the starting random access preamble code, and SIBX includes SIBX#0 to #3, so that the non-contention preamble codes #27 and #28 corresponding to RO#0 can correspond to SIBX#0 and #1 respectively.

[0308] Optionally, if the number of second communication devices does not exceed the number of non-contention preambles corresponding to one RO, the non-contention preambles corresponding to one or more ROs may be made to correspond to SIBXs, respectively. For example, if the non-contention preambles corresponding to RO#0 are #25 to #32, #27 is designated as the starting random access preamble, and the non-contention preambles corresponding to RO#1 are #25 to #32, #27 is designated as the starting random access preamble, SIBX#0 to #1 may correspond to non-contention preambles #27 and #28 corresponding to RO#0, respectively, and SIBX#2 to #3 may correspond to non-contention preambles #27 and #28 corresponding to RO#1, respectively.

[0309] In one embodiment, the RO reserved preamble code can be indexed, that is, the reserved preamble code on an RO can be corresponded to one or more SIBXs. In this case, it can be determined based on the number of SSBs, and each SSB on the RO can correspond to a reserved preamble code respectively (for example, if an RO has SSB1 and SSB2, the two reserved preamble codes on the RO can be used, that is, SSB1 on the RO corresponds to the first reserved preamble code, and SSB2 on the RO corresponds to the second reserved preamble code). In this case, the reserved preamble code corresponding to SSB1 and the reserved preamble code corresponding to SSB2 can be used to correspond to the SIB1 of the target second communication device.

[0310] Method 4: Align the random access preamble corresponding to the SSB with the preset first random access preamble and SIB1 of the target second communication device.

[0311] Optionally, the random access preamble may be a non-contention preamble.

[0312] That is to say, based on method one, instead of starting from the first non-competitive random access preamble corresponding to the SSB and corresponding the non-competitive random access preambles to the second communication device in sequence, one of the non-competitive random access preambles can be designated as the starting random access preamble, and the starting random access preamble and the non-competitive random access preamble after the starting random access preamble can be corresponded to the SIB1 of the target second communication device.

[0313] For example, if there are two SSBs on the RO, namely SSB1 and SSB2, the non-contention preambles #20 to #23 corresponding to SSB1 and the non-contention preambles #44 to #47 corresponding to SSB2 can be used to correspond to one or more SIBXs. If the starting random access preamble in the non-contention random access preambles configured to correspond to the SIBX is #21, the non-contention preambles #21 to #23 corresponding to SSB1 and the non-contention preambles #44 to #47 corresponding to SSB2 can be used to correspond to the SIB1 of the target second communication device. If the starting random access preamble in the non-contention random access preambles configured to correspond to the SIB1 of the target second communication device is #21 and #45, the non-contention preambles #21 to #23 corresponding to SSB1 and the non-contention preambles #45 to #47 corresponding to SSB2 can be used to correspond to the SIB1 of the target second communication device.

[0314] The above-mentioned non-contention preamble and reserved preamble are dedicated random access resources, which are random access resources allocated on the RO and dedicated to corresponding to one or more SIBXs.

[0315] Step S902: The first communication device determines whether the cell corresponding to (or the cell where) the target second communication device is located is a network energy saving (NES) cell.

[0316] In one possible implementation, fifth information may be used to determine whether the target second communication device is an NES cell. For example, the fifth information includes a first parameter, and whether the cell corresponding to the target second communication device is an NES cell is determined based on the value of the first parameter. For example, if the value of the first parameter is the first value, the cell corresponding to the target second communication device is determined to be an NES cell.

[0317] In one example, it can be determined by the reserved bit on the physical broadcast channel (PBCH) in the SSB sent by the target second communication device. For example, when Lmax is 10, is a reserved bit, so at this time, The value of determines whether the cell corresponding to the target second communication device is a NES cell. When the value of is 1, it indicates that the cell corresponding to the target second communication device is an NES cell; When the value of is 0, it indicates that the cell corresponding to the target second communication device is not an NES cell. When the value of is 0, it indicates that the cell corresponding to the target second communication device is an NES cell; When the value of is 1, it indicates that the cell corresponding to the target second communication device is not an NES cell. For example, when Lmax is other values, such as 2, 4, 6 or 8, and is a reserved bit, so at this time, or The value of determines whether the cell corresponding to the target second communication device is an NES cell.

[0318] In another example, whether the cell corresponding to the target second communication device is an NES cell can be determined by the value of the parameter Kssb of the SSB frequency offset (ssb-subcarrierOffset). For example, if the value of Kssb is 30 at FR1 and / or the value of Kssb is 14 at FR2, then the cell corresponding to the target second communication device is determined to be an NES cell.

[0319] In one possible implementation, a method for determining whether the cell corresponding to the target second communication device is an NES cell may be: the first communication device searches for the SIB1 of the target second communication device; if the SIB1 of the target second communication device is not found within a preset time range, the cell corresponding to the target second communication device is determined to be an NES cell.

[0320] Step S903: When the cell corresponding to the target second communication device is an NES cell, the first communication device sends a first request message to the target second communication device based on the WUS configuration information of the target second communication device. Correspondingly, the target second communication device receives the first request message.

[0321] The first request message is used to request the SIB1 of the target second communication device. The first request message may be a WUS.

[0322] The first request message may include a random access preamble corresponding to the SIB1 of the target second communication device.

[0323] In a possible implementation manner, the first communication device sends the first request message via MSG1-based.

[0324] Specifically, the first communication device sends MSG1 (first request message) to the target second communication device based on MSG1-based to request SIB1 of the target second communication device.

[0325] In a possible implementation manner, the first communication device sends the first request message through MSG3-based.

[0326] Specifically, the first communication device sends MSG1 to the target second communication device via MSG3-based messaging. After receiving MSG1, the target second communication device sends a random access response (RAR). After receiving the RAR, the first communication device sends MSG3 (a first request message).

[0327] Step S904: The target second communication device sends the SIB1 of the target second communication device. Correspondingly, the first communication device receives the SIB1 sent by the target second communication device.

[0328] For the specific implementation of steps S903 to S904, please refer to the specific implementation of steps S805 to S806 corresponding to FIG8 , which will not be described in detail here.

[0329] The above content describes the method embodiments provided by the present application. In order to facilitate better implementation of the above schemes of the embodiments of the present application, the embodiments of the present application also provide corresponding devices.

[0330] In the embodiment of the present application, the functional modules of the communication device can be divided according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical functional division. In actual implementation, there may be other division methods.

[0331] Please refer to Figure 10, which is a schematic diagram of the structure of a communication device provided in an embodiment of the present application. The communication device can be a first communication device or a device (e.g., a chip, a chip system, or a circuit) within the first communication device. As shown in Figure 10, the communication device 101 includes at least: a receiving unit 103 and a sending unit 102; wherein:

[0332] A sending unit 102 is configured to send a first request message, where the first request message is used to request a system information block SIB1 of a target second communication device;

[0333] The receiving unit 103 is configured to receive the SIB1 of the target second communication device.

[0334] In one possible implementation, the receiving unit 103 is further configured to receive first information and / or second information, where the first information includes wake-up signal WUS configuration information of the third communication device, the first information being used to configure the first communication device to send a WUS to request the SIB1 of the target second communication device in a first request message, the SIB1 of the target second communication device being included in the first system message or the first signaling of the third communication device, and the second information including list information, the list information including identification information of one or more second communication devices;

[0335] The sending unit 102 is specifically configured to send a first request message according to the WUS configuration information of the third communication device.

[0336] In a possible implementation manner, the WUS configuration information in the first information includes a correspondence between a random access preamble code and one or more second communication devices.

[0337] In one possible implementation, the first request message includes a random access preamble corresponding to the target second communication device, and the sending unit 102 is specifically used to send a first request message to the third communication device based on the correspondence between the random access preamble and one or more second communication devices in the WUS configuration information of the third communication device. The first request message is used to request the third communication device to send the SIB1 of the target second communication device, and the SIB1 of the target second communication device is included in the first system message or the first signaling.

[0338] In a possible implementation manner, the WUS configuration information in the first information includes a correspondence between a random access preamble code and a first system message.

[0339] In one possible implementation, the first request message includes a random access preamble corresponding to the first system message, and the sending unit 102 is specifically used to send a first request message to the third communication device according to the correspondence between the random access preamble and the first system message in the WUS configuration information of the third communication device. The first request message is used to request the third communication device to send the SIB1 of one or more second communication devices, and the SIB1 of one or more second communication devices is included in the first system message.

[0340] In one possible implementation, the receiving unit 103 is further configured to receive second information and / or third information, where the second information includes list information, the list information includes identification information of one or more second communication devices, and the third information includes wake-up signal WUS configuration information of the third communication device, where the third information is used to configure the first communication device to send a WUS to request SIB1 of the one or more second communication devices in the first request message;

[0341] The sending unit 102 is specifically configured to send a first request message according to the WUS configuration information of the third communication device.

[0342] In a possible implementation manner, the WUS configuration information in the third information includes a correspondence between a random access preamble code and one or more second communication devices.

[0343] In one possible implementation, the first request message includes a random access preamble code corresponding to the target second communication device, and the sending unit 102 is specifically used to send the first request message according to the correspondence between the random access preamble code and one or more second communication devices in the WUS configuration information of the third communication device, and the first request message is used to request the SIB1 of the target second communication device.

[0344] In a possible implementation manner, the WUS configuration information in the third information includes a correspondence between a random access preamble code and the SIB1 requesting the second communication device.

[0345] In a possible implementation, the WUS configuration information in the third information includes a correspondence between the random access preamble and the list information, that is, the random access preamble corresponds to all the second communication devices in the list information.

[0346] In one possible implementation method, the first request message includes a random access preamble code corresponding to the SIB1 of the requested second communication device or includes a correspondence between the random access preamble code and the list information. The sending unit 102 is specifically used to send the first request message according to the correspondence between the random access preamble code and the SIB1 of the requested second communication device in the WUS configuration information of the third communication device. The first request message is used to request the SIB1 of one or more second communication devices.

[0347] In one possible implementation, the receiving unit 103 is further configured to receive second information and / or fourth information, where the second information includes list information, the list information includes identification information of one or more second communication devices, and the fourth information is used to configure the first communication device to send a second request message, where the second request message is used to request wake-up signal WUS configuration information of the one or more second communication devices;

[0348] The sending unit 102 is further configured to send a second request message, where the second request message is used to request WUS configuration information of one or more second communication devices, where the WUS configuration information of the one or more second communication devices is included in a second system message or second signaling of the third communication device;

[0349] The receiving unit 103 is further configured to receive a second system message or a second signaling from a third communication device;

[0350] The sending unit 102 is further configured to send a first request message to the target second communication device according to the WUS configuration information of the target second communication device.

[0351] In a possible implementation manner, the fourth information includes a correspondence between a random access preamble code and one or more second communication devices.

[0352] In one possible implementation, the second request message includes a random access preamble corresponding to the target second communication device, and the sending unit 102 is specifically configured to send the second request message to the third communication device according to the correspondence between the random access preamble and one or more second communication devices.

[0353] In a possible implementation manner, the fourth information includes a correspondence between the random access preamble code and the second system message.

[0354] In a possible implementation, the second request message includes a random access preamble corresponding to the second system message, and the sending unit 102 is specifically configured to send the second request message to the third communication device according to the correspondence between the random access preamble and the second system message.

[0355] In a possible implementation, the receiving unit 103 is further configured to receive fifth information, where the fifth information includes wake-up signal WUS configuration information of the target second communication device;

[0356] The sending unit 102 is specifically configured to send a first request message to the target second communication device when the cell corresponding to the target second communication device is a Network Energy Saving NES cell, where the NES cell is a cell where the second communication device does not broadcast SIB1.

[0357] In a possible implementation, the communication device further includes a unit for determining whether the cell corresponding to the target second communication device is an NES cell.

[0358] In one possible implementation, the fifth information also includes a first parameter, and the processing unit 104 is specifically used to determine whether the cell corresponding to the target second communication device is an NES cell based on the value of the first parameter; when the value of the first parameter is the first value, it is determined that the cell corresponding to the target second communication device is an NES cell.

[0359] In a possible implementation, the processing unit 104 is specifically configured to search for the SIB1 of the target second communication device; if the SIB1 of the target second communication device is not found within a preset time range, determine that the cell corresponding to the target second communication device is an NES cell.

[0360] In one possible implementation, the first request message is sent based on message 1 or message 3. When the first request message is sent based on message 1, the first request message includes a random access preamble corresponding to SIB1 of the second communication device.

[0361] In a possible implementation, message 3 includes identification information of the target second communication device.

[0362] For a more detailed description of the sending unit 102 , the receiving unit 103 and the processing unit 104 , reference may be made to the relevant description of the first communication device in the method embodiments shown in FIG. 2 to FIG. 9 , which will not be repeated here.

[0363] The communication device shown in FIG10 may be a second communication device, or may be a device in the second communication device (e.g., a chip, or a chip system, or a circuit). As shown in FIG10 , the communication device 101 at least includes: a sending unit 102 and a receiving unit 103; wherein,

[0364] The sending unit 102 is used to send information of the target second communication device to a third communication device, where the information of the target second communication device includes identification information of the target second communication device; and / or to send the system information block SIB1 of the target second communication device to the first communication device; and / or to send the WUS configuration of the target second communication device.

[0365] In a possible implementation, the receiving unit 103 is configured to receive a third request message sent by the third communication apparatus, where the third request message is used to request the target second communication apparatus to send SIB1.

[0366] In a possible implementation, the receiving unit 103 is further configured to receive a first request message, where the first request message is used to request the target second communication apparatus to send SIB1.

[0367] In a possible implementation, the sending unit 102 is further configured to send fifth information, where the fifth information includes wake-up signal WUS configuration information of the target second communication device;

[0368] The receiving unit 103 is further configured to receive a first request message, where the first request message is used to request the target second communication device to send SIB1.

[0369] In a possible implementation manner, the fifth information further includes a correspondence between the SIB1 of the target second communication device and the random access preamble code.

[0370] For a more detailed description of the sending unit 102 and the receiving unit 103 , reference may be made to the relevant description of the target second communication device in the method embodiments shown in FIG. 2 to FIG. 9 , which will not be repeated here.

[0371] The communication device shown in FIG10 may be a third communication device, or may be a device in the third communication device (e.g., a chip, or a chip system, or a circuit). As shown in FIG10 , the communication device 101 at least includes: a sending unit 102 and a receiving unit 103; wherein,

[0372] a sending unit 102, configured to send first information and / or second information to a first communication device, where the first information includes wake-up signal WUS configuration information of a third communication device, the first information being used to configure the first communication device to send a WUS to request a first system message or first signaling of the third communication device in a first request message, and the second information includes list information, the list information including identification information of one or more second communication devices;

[0373] The receiving unit 103 is configured to receive a first request message sent by a first communication device, where the first request message is used to request a system information block SIB1 of a target second communication device;

[0374] The sending unit 102 is further configured to send a first system message or a first signaling according to the first request message, where the first system message includes the SIB1 of the target second communication device, and the first signaling includes the SIB1 of the target second communication device.

[0375] In a possible implementation manner, the first information further includes a correspondence between the random access preamble code and one or more second communication devices.

[0376] In a possible implementation manner, the first information further includes a correspondence between the random access preamble code and the first system message.

[0377] In a possible implementation, the receiving unit 103 is further configured to receive second communication device information sent by one or more second communication devices, where the second communication device information includes an identifier of the second communication device.

[0378] or,

[0379] a sending unit 102, configured to send second information and / or third information to a first communication device, where the second information includes list information, the list information includes identification information of one or more second communication devices, and the third information includes wake-up signal WUS configuration information of the third communication device, where the third information is used to configure the first communication device to send a WUS to request SIB1 of one or more second communication devices in a first request message;

[0380] A receiving unit 103 is configured to receive a first request message sent by a first communication device, where the first request message is used to request a system information block SIB1 of one or more second communication devices;

[0381] The sending unit 102 is further configured to send a third request message according to the first request message, where the third request message is used to request one or more second communication devices to send SIB1 of the one or more second communication devices.

[0382] In a possible implementation manner, the third information further includes a correspondence between the random access preamble code and one or more second communication devices.

[0383] In a possible implementation manner, the third information further includes a correspondence between the random access preamble code and the system information block SIBX of the third communication device.

[0384] In a possible implementation, the receiving unit 103 is further configured to receive second communication device information sent by one or more second communication devices, where the second communication device information includes an identifier of the second communication device.

[0385] or,

[0386] a sending unit 102, configured to send second information and / or fourth information to a first communication device, where the second information includes list information, the list information includes identification information of one or more second communication devices, and the fourth information is used to configure the first communication device to send a second request message, where the second request message is used to request wake-up signal WUS configuration information for one or more second communication devices;

[0387] A receiving unit 103 is configured to receive a second request message, where the second request message is used to request a second system message or second signaling of a third communication device, where the second system message includes WUS configuration information of a target second communication device, and the second signaling includes WUS configuration information of the target second communication device;

[0388] The sending unit 102 is further configured to send a second system message or a second signaling.

[0389] In a possible implementation manner, the fourth information further includes a correspondence between the random access preamble code and one or more second communication devices.

[0390] In a possible implementation manner, the fourth information further includes a correspondence between the random access preamble code and the second system message.

[0391] In a possible implementation, the receiving unit 103 is further configured to receive second communication device information sent by one or more second communication devices, where the second communication device information includes an identifier of the second communication device.

[0392] For a more detailed description of the sending unit 102 and the receiving unit 103 , reference may be made to the relevant description of the third communication device in the method embodiments shown in FIG. 2 to FIG. 9 , which will not be repeated here.

[0393] Please refer to Figure 11, which is a schematic diagram of the structure of another communication device provided in an embodiment of the present application. As shown in Figure 11, the device 700 may include one or more processors 710, which may also be referred to as a processing unit, and may implement certain control functions. The processor 710 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control a communication device (such as a base station, a baseband chip, a terminal, a terminal chip, a DU or a CU, etc.), execute software programs, and process data of software programs.

[0394] In an optional design, the processor 710 may also store instructions 730 and / or data, which can be executed by the processor so that the device 700 performs the method described in the above method embodiment.

[0395] In another optional design, the processor 710 may include a transceiver unit for implementing receiving and transmitting functions. For example, the transceiver unit may be a transceiver circuit, an interface, an interface circuit, or a communication interface. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or the transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.

[0396] In another possible design, the apparatus 700 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments.

[0397] Optionally, the device 700 may include one or more memories 720, on which instructions 740 and / or data may be stored. The instructions 740 and / or data may be executed on the processor, so that the device 700 performs the method described in the above method embodiment. Optionally, data may also be stored in the memory. Optionally, instructions and / or data may also be stored in the processor. The processor and memory may be provided separately or integrated together. For example, the corresponding relationship described in the above method embodiment may be stored in the memory or in the processor.

[0398] Optionally, the apparatus 700 may further include a transceiver 750 and / or an antenna 760. The processor 710 may be referred to as a processing unit, which controls the apparatus 700. The transceiver 750 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, a transceiver device, or a transceiver module, etc., which is configured to implement transceiver functions.

[0399] Optionally, the device 700 in the embodiment of the present application can be used to execute the method described in Figures 2 to 9 in the embodiment of the present application.

[0400] In one embodiment, the communication device 700 may be a first communication device, or a device (e.g., a chip, a chip system, or a circuit) within the first communication device. When the computer program instructions stored in the memory 720 are executed, the processor 710 is configured to execute the operations performed by the processing unit 104 in the above-described embodiment, and the transceiver 750 is configured to execute the operations performed by the sending unit 102 and the receiving unit 103 in the above-described embodiment. The transceiver 750 is further configured to send information to other communication devices outside the communication device. The above-described first communication device or the device within the first communication device may also be configured to execute the various methods performed by the first communication device in the method embodiments of Figures 2 to 9 above, which will not be described in detail.

[0401] In one embodiment, the communication device 700 may be a second communication device, or a device within the second communication device (e.g., a chip, a chip system, or a circuit). When the computer program instructions stored in the memory 720 are executed, the transceiver 750 is configured to perform the operations performed by the sending unit 102 and the receiving unit 103 in the above-described embodiments. The transceiver 750 is also configured to receive information from other communication devices outside the communication device. The above-described second communication device or the device within the second communication device may also be configured to perform the various methods performed by the second communication device in the method embodiments of Figures 2 to 9 above, which will not be described in detail.

[0402] In one embodiment, the communication device 700 may be a third communication device, or a device within the third communication device (e.g., a chip, a chip system, or a circuit). When the computer program instructions stored in the memory 720 are executed, the transceiver 750 is configured to perform the operations performed by the sending unit 102 and the receiving unit 103 in the above-described embodiments. The transceiver 750 is also configured to receive information from other communication devices outside the communication device. The third communication device or the device within the third communication device may also be configured to perform the various methods performed by the third communication device in the method embodiments of Figures 2 to 9 above, which will not be described in detail.

[0403] The processor and transceiver described in this application can be implemented on an integrated circuit (IC), an analog IC, a radio frequency interface chip (RFIC), a mixed-signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0404] The device described in the above embodiments may be a first communication device or a second communication device, but the scope of the device described in this application is not limited thereto, and the structure of the device may not be limited to FIG11. The device may be an independent device or may be part of a larger device. For example, the device may be:

[0405] (1) An independent integrated circuit (IC), or chip, or chip system or subsystem;

[0406] (2) having a set of one or more ICs, optionally including a storage component for storing data and / or instructions;

[0407] (3) ASIC, such as modem (MSM);

[0408] (4) Modules that can be embedded in other devices;

[0409] (5) Receivers, terminals, smart terminals, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, machine devices, home devices, medical devices, industrial equipment, etc.;

[0410] (6)Others, etc.

[0411] Please refer to Figure 12, which is a structural diagram of a first communication device provided in an embodiment of the present application. For ease of explanation, Figure 12 only shows the main components of the first communication device (terminal equipment). As shown in Figure 12, the first communication device 800 includes a processor, a memory, a control circuit, an antenna, and an input and output device. The processor is mainly used to process communication protocols and communication data, as well as to control the entire terminal, execute software programs, and process software program data. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for conversion between baseband signals and radio frequency signals and for processing radio frequency signals. The antenna is mainly used to transmit and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users.

[0412] When the terminal is powered on, the processor reads the software program from the storage unit, parses and executes the instructions of the software program, and processes the data of the software program. When data needs to be sent wirelessly, the processor performs baseband processing on the data to be sent and outputs the baseband signal to the RF circuit. The RF circuit processes the baseband signal to obtain an RF signal and transmits the RF signal to the outside in the form of electromagnetic waves via the antenna. When data is sent to the terminal, the RF circuit receives the RF signal via the antenna, which is further converted into a baseband signal and output to the processor. The processor converts the baseband signal into data and processes the data.

[0413] For ease of explanation, FIG12 shows only one memory and processor. In an actual terminal, there may be multiple processors and memories. The memory may also be referred to as a storage medium or storage device, etc., which is not limited in the present embodiment.

[0414] As an optional implementation, the processor may include a baseband processor and a central processing unit (CPU). The baseband processor is primarily responsible for processing communication protocols and communication data, while the CPU is primarily responsible for controlling the entire terminal, executing software programs, and processing data from software programs. The processor in Figure 12 integrates the functions of both the baseband processor and the CPU. Those skilled in the art will appreciate that the baseband processor and the CPU may also be independent processors interconnected via a bus or other technology. Those skilled in the art will appreciate that a terminal may include multiple baseband processors to accommodate different network standards, multiple CPUs to enhance its processing capabilities, and that the various components of the terminal may be connected via various buses. The baseband processor may also be referred to as a baseband processing circuit or a baseband processing chip. The CPU may also be referred to as a central processing circuit or a central processing chip. The functionality for processing communication protocols and communication data may be built into the processor or stored as a software program in a storage unit, with the processor executing the software program to implement the baseband processing functionality.

[0415] In one example, the antenna and control circuit with transceiver functions can be considered the transceiver unit 810 of the first communication device 800, and the processor with processing functions can be considered the processing unit 820 of the first communication device 800. As shown in Figure 12, the first communication device 800 includes a transceiver unit 810 and a processing unit 820. The transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver device, etc. Optionally, the device in the transceiver unit 810 that implements the receiving function may be considered the receiving unit, and the device in the transceiver unit 810 that implements the transmitting function may be considered the transmitting unit, that is, the transceiver unit 810 includes a receiving unit and a transmitting unit. For example, the receiving unit may also be referred to as a receiver, a receiver, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc. Optionally, the receiving unit and the transmitting unit may be a single integrated unit or multiple independent units. The receiving unit and the transmitting unit may be located in a single geographic location or dispersed across multiple geographic locations.

[0416] In one embodiment, the processing unit 820 is configured to execute the operations performed by the processing unit 104 in the above embodiment, and the transceiver unit 810 is configured to execute the operations performed by the transmitting unit 102 and the receiving unit 103 in the above embodiment. The first communication device 800 can also be configured to execute the various methods performed by the first communication device in the method embodiments of Figures 5 to 9 above, which will not be described in detail.

[0417] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the process related to the first communication device in the method provided in the above method embodiment can be implemented.

[0418] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon. When the program is executed by a processor, the process related to the second communication device in the method provided in the above method embodiment can be implemented.

[0419] The present application also provides a computer program product that, when executed on a computer or processor, causes the computer or processor to perform one or more steps of any of the aforementioned methods. If the various components of the aforementioned devices are implemented as software functional units and sold or used as independent products, they may be stored in the computer-readable storage medium.

[0420] The present application also provides a chip system, including at least one processor and a communication interface, wherein the communication interface and the at least one processor are interconnected via a line, and the at least one processor is configured to execute a computer program or instruction to perform some or all of the steps described in any one of the method embodiments corresponding to Figures 5 to 9 above. The chip system can be composed of a chip or can include a chip and other discrete devices.

[0421] An embodiment of the present application further discloses a communication system, which includes a first communication device and a second communication device. For a specific description, reference may be made to the methods shown in Figures 5 to 9.

[0422] It should be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a hard disk drive (HDD), a solid-state drive (SSD), a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM) and direct rambus RAM (DR RAM). Memory is any other medium that can be used to carry or store a desired program code with an instruction or data structure form and can be accessed by a computer, but is not limited thereto. The memory in the embodiment of the present application can also be a circuit or other arbitrarily capable of implementing a storage function, for storing program instructions and / or data.

[0423] It should also be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor, etc.

[0424] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) is integrated into the processor.

[0425] It should be noted that the memory described herein is intended to include, but not be limited to, these and any other suitable types of memory.

[0426] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0427] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments provided herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0428] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0429] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0430] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0431] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0432] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0433] The steps in the method of the embodiment of the present application can be adjusted in order, combined and deleted according to actual needs.

[0434] The modules / units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0435] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A communication method, characterized in that: Applied to a first communication device, the method includes: Sending a first request message, where the first request message is used to request a system information block SIB1 of a target second communication device; Receive the SIB1 of the target second communication device.

2. The method according to claim 1, characterized in that The method further comprises: receiving first information and / or second information, where the first information includes wake-up signal WUS configuration information of a third communication device, the first information being used to configure the first communication device to send a WUS to request the SIB1 of the target second communication device in the first request message, the SIB1 of the target second communication device being included in a first system message or first signaling of the third communication device, and the second information including list information including identification information of one or more second communication devices; The sending of the first request message includes: The first request message is sent according to the WUS configuration information of the third communication device.

3. The method according to claim 2, characterized in that The WUS configuration information in the first information includes a correspondence between a random access preamble and the one or more second communication devices.

4. The method according to claim 3, characterized in that The first request message includes a random access preamble corresponding to the target second communication device, and sending the first request message according to the WUS configuration information of the third communication device includes: The first request message is sent to the third communication device according to the correspondence between the random access preamble code in the WUS configuration information of the third communication device and the one or more second communication devices, wherein the first request message is used to request the third communication device to send the SIB1 of the target second communication device, and the SIB1 of the target second communication device is included in the first system message or the first signaling.

5. The method according to claim 2, characterized in that The WUS configuration information in the first information includes a correspondence between a random access preamble code and the first system message.

6. The method according to claim 5, characterized in that The first request message includes a random access preamble corresponding to the first system message, and the sending the first request message according to the WUS configuration information of the third communication device includes: The first request message is sent to the third communication device according to the correspondence between the random access preamble code and the first system message in the WUS configuration information of the third communication device, and the first request message is used to request the third communication device to send the SIB1 of one or more second communication devices, and the SIB1 of one or more second communication devices is included in the first system message.

7. The method according to claim 1, characterized in that The method further comprises: receiving second information and / or third information, where the second information includes list information, the list information includes identification information of one or more second communication devices, and the third information includes wake-up signal WUS configuration information of the third communication device, where the third information is used to configure the first communication device to send a WUS to request SIB1 of the one or more second communication devices in the first request message; The sending of the first request message includes: The first request message is sent according to the WUS configuration information of the third communication device.

8. The method according to claim 7, characterized in that The WUS configuration information in the third information includes a correspondence between a random access preamble and the one or more second communication devices.

9. The method according to claim 8, characterized in that The first request message includes a random access preamble corresponding to the target second communication device, and sending the first request message according to the WUS configuration information of the third communication device includes: The first request message is sent according to the correspondence between the random access preamble code in the WUS configuration information of the third communication device and the one or more second communication devices, where the first request message is used to request the SIB1 of the target second communication device.

10. The method according to claim 7, characterized in that The WUS configuration information in the third information includes a correspondence between a random access preamble and the SIB1 requesting the second communication device.

11. The method according to claim 10, characterized in that The first request message includes a random access preamble corresponding to the SIB1 of the requesting second communication device, and the sending the first request message according to the WUS configuration information of the third communication device includes: The first request message is sent according to the correspondence between the random access preamble in the WUS configuration information of the third communication device and the SIB1 of the requested second communication device, where the first request message is used to request the SIB1 of one or more second communication devices.

12. The method according to claim 1, characterized in that The method further comprises: receiving second information and / or fourth information, where the second information includes list information, the list information includes identification information of one or more second communication devices, and the fourth information is used to configure the first communication device to send a second request message, where the second request message is used to request wake-up signal WUS configuration information for the one or more second communication devices; The sending of the first request message includes: Sending the second request message, where the second request message is used to request WUS configuration information of the one or more second communication devices, where the WUS configuration information of the one or more second communication devices is included in the second system message or second signaling of the third communication device; receiving the second system message or the second signaling of the third communication device; The first request message is sent to the target second communication device according to the WUS configuration information of the target second communication device.

13. The method according to claim 12, characterized in that The fourth information includes a correspondence between a random access preamble and the one or more second communication devices.

14. The method according to claim 13, wherein: The second request message includes a random access preamble corresponding to the target second communication device, and sending the second request message includes: The second request message is sent to the third communication device according to the correspondence between the random access preamble code and the one or more second communication devices.

15. The method according to claim 12, characterized in that The fourth information includes a correspondence between a random access preamble code and the second system message.

16. The method according to claim 15, characterized in that The second request message includes a random access preamble corresponding to the second system message, and the sending the second request message includes: The second request message is sent to the third communication device according to the correspondence between the random access preamble code and the second system message.

17. The method according to claim 1, wherein The method further comprises: receiving fifth information, the fifth information including wake-up signal WUS configuration information of the target second communication device; The sending of the first request message includes: In a case where the cell corresponding to the target second communication device is a Network Energy Saving NES cell, the first request message is sent to the target second communication device, and the NES cell is a cell in which the second communication device does not broadcast SIB1.

18. The method according to claim 17, characterized in that The method further comprises: Determine whether the cell corresponding to the target second communication device is an NES cell.

19. The method according to claim 18, characterized in that The fifth information further includes a first parameter, and the determining whether the cell corresponding to the target second communication device is an NES cell includes: Determining whether the cell corresponding to the target second communication device is an NES cell according to the value of the first parameter; When the value of the first parameter is the first value, it is determined that the cell corresponding to the target second communication device is an NES cell.

20. The method according to claim 18, wherein Determining whether the cell corresponding to the target second communication device is an NES cell includes: Searching for SIB1 of the target second communication device; If the SIB1 of the target second communication device is not found within a preset time range, it is determined that the cell corresponding to the target second communication device is an NES cell.

21. The method according to any one of claims 1 to 20, characterized in that The first request message is sent based on message 1 or message 3. When the first request message is sent based on message 1, the first request message includes a random access preamble corresponding to SIB1 of the second communication device.

22. The method according to claim 21, characterized in that Message 3 includes identification information of the target second communication device.

23. A communication method, characterized in that: Applied to a target second communication device, the method includes: sending information of the target second communication device to a third communication device, wherein the information of the target second communication device includes identification information of the target second communication device; and / or Sending the system information block SIB1 of the target second communication device to the first communication device; and / or The WUS configuration of the target second communication device is sent.

24. The method according to claim 23, wherein In the case where the information of the target second communication device is sent to the third communication device, and the system information block SIB1 of the target second communication device is sent to the first communication device, the method further includes: A third request message sent by the third communication device is received, where the third request message is used to request the target second communication device to send SIB1.

25. The method according to claim 23, characterized in that In the case where the information of the target second communication device is sent to the third communication device, the system information block SIB1 of the target second communication device is sent, and the WUS configuration information of the target second communication device is sent to the first communication device, the method further includes: A first request message is received, where the first request message is used to request the target second communication device to send SIB1.

26. The method according to claim 23, wherein In the case where the information of the target second communication device is not sent to the third communication device, but the system information block SIB1 of the target second communication device is sent to the first communication device, the method further includes: Sending fifth information, where the fifth information includes wake-up signal WUS configuration information of the target second communication device; A first request message is received, where the first request message is used to request the target second communication device to send SIB1.

27. The method according to claim 25, characterized in that The fifth information also includes a correspondence between the SIB1 of the target second communication device and the random access preamble code.

28. A communication method, characterized in that: Applied to a third communication device, the method includes: sending first information and / or second information to a first communication device, where the first information includes wake-up signal WUS configuration information of a third communication device, the first information being used to configure the first communication device to send a WUS to request a first system message or first signaling of the third communication device in a first request message, and the second information includes list information, the list information including identification information of one or more second communication devices; receiving a first request message sent by a first communication device, where the first request message is used to request a system information block SIB1 of a target second communication device; A first system message or a first signaling is sent according to the first request message, where the first system message includes the SIB1 of the target second communication apparatus, and the first signaling includes the SIB1 of the target second communication apparatus.

29. The method according to claim 28, characterized in that The first information further includes a correspondence between a random access preamble and the one or more second communication devices.

30. The method according to claim 28, wherein The first information also includes a correspondence between a random access preamble code and the first system message.

31. A communication method, characterized in that: Applied to a third communication device, the method includes: sending second information and / or third information to the first communication device, where the second information includes list information, the list information includes identification information of one or more second communication devices, and the third information includes wake-up signal WUS configuration information of the third communication device, where the third information is used to configure the first communication device to send a WUS to request SIB1 of the one or more second communication devices in the first request message; receiving the first request message sent by the first communication device, where the first request message is used to request a system information block SIB1 of one or more second communication devices; A third request message is sent according to the first request message, where the third request message is used to request one or more second communication devices to send the SIB1 of the one or more second communication devices.

32. The method according to claim 31, characterized in that The third information also includes a correspondence between a random access preamble and the one or more second communication devices.

33. The method according to claim 31, characterized in that The third information also includes a correspondence between a random access preamble and a system information block SIBX of the third communication device.

34. A communication method, characterized in that: Applied to a third communication device, the method includes: sending second information and / or fourth information to the first communication device, where the second information includes list information, the list information includes identification information of one or more second communication devices, and the fourth information is used to configure the first communication device to send a second request message, where the second request message is used to request wake-up signal WUS configuration information for the one or more second communication devices; receiving the second request message, where the second request message is used to request a second system message or second signaling of the third communication device, the second system message including the WUS configuration information of the target second communication device, and the second signaling including the WUS configuration information of the target second communication device; Send the second system message or the second signaling.

35. The method according to claim 34, wherein The fourth information also includes a correspondence between a random access preamble and the one or more second communication devices.

36. The method according to claim 34, wherein The fourth information also includes a correspondence between a random access preamble code and the second system message.

37. The method according to any one of claims 28 to 36, characterized in that The method further comprises: The information of the second communication device sent by one or more second communication devices is received, where the information of the second communication device includes an identification of the second communication device.

38. A communication device, characterized in that: The device comprises a processor configured to execute a computer program or instruction in a memory, wherein when the computer program or instruction is executed by the processor, the device executes the method according to any one of claims 1 to 22, or implements the method according to any one of claims 23 to 27, or implements the method according to any one of claims 28 to 37.

39. The communication device according to claim 38, characterized in that The communication device further includes the memory.

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