Communication method and related apparatus

Abstract

A communication method and a related apparatus. The method comprises: a terminal device receiving a downlink synchronization signal from an access network device, wherein the downlink synchronization signal is used for downlink synchronization; and the terminal device sending a wake-up signal to the access network device, wherein the wake-up signal indicates auxiliary information, and the auxiliary information is used for triggering the access network device to send all or some of system information. By means of the embodiments of the present application, a reduction in network energy consumption is facilitated.

Description

Communication method and related device Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and related devices. Background Art

[0002] In order to meet people's growing demand for data traffic, wireless networks have been under rapid construction. As the scale of the network grows, network energy consumption continues to increase, and electricity bills have greatly increased the cost of operators. In the current network, different equipment manufacturers and operators have adopted various energy-saving measures, such as device-level, site-level, and network-level energy saving. In addition, the 3rd Generation Partnership Project (3GPP) Release 18 (Release-18, Rel-18) has also launched research on network energy saving. Among them, the energy-saving solutions related to the synchronization signal and physical broadcast channel block (SSB) / system information block 1 (SIB1) mainly include extending the SSB period, sending streamlined SSBs, and sending SSBs / SIBs on demand. Taking the on-demand transmission of SSB / SIB as an example, by default, only SSB or simplified SSB is broadcast. After receiving the wake-up signal (WUS) sent by the terminal device, the transmission of SSB and SIB is turned on (for a period of time). Since the cell's SSB and SIB are no longer always-on signals but are sent on demand, the number of symbols used to transmit SSB and SIB can be significantly reduced, thereby increasing the opportunity for time-domain shutdown and achieving the goal of saving power. However, how to further refine the energy-saving solution related to SSB / SIB1 has not yet been discussed.

[0003] Summary of the Invention

[0004] The present application provides a communication method and related devices, which are conducive to saving network energy consumption.

[0005] In a first aspect, the present application provides a communication method performed by a terminal device, which may be the terminal device itself or a unit or module (e.g., a chip) in the terminal device with corresponding functions. In this method, the terminal device receives a downlink synchronization signal from an access network device, the downlink synchronization signal being used for downlink synchronization; and the terminal device sends a wake-up signal to the access network device, the wake-up signal indicating auxiliary information, the auxiliary information being used to trigger the access network device to send all or part of the system information.

[0006] In the present application, auxiliary information is indicated by a wake-up signal, and the auxiliary information is used to trigger the on-demand sending of all or part of the content in the system information, thereby reducing the overhead of the system information and helping to save network energy consumption.

[0007] In one possible design, the wake-up signal includes first indication information, where the first indication information indicates the auxiliary information.

[0008] In this implementation, first indication information may be added to the wake-up signal to indicate the auxiliary information, so that the auxiliary information can be explicitly indicated.

[0009] In one possible design, different wake-up signals indicate different auxiliary information, and the association between different wake-up signals and different auxiliary information is predefined, or preconfigured, or indicated by the first message.

[0010] In this implementation, the auxiliary information may be indicated by the wake-up signal itself, wherein different wake-up signals indicate different auxiliary information. This implicit indication method is beneficial for saving signaling overhead.

[0011] In one possible design, the wake-up signal is an orthogonal sequence, and different orthogonal sequences indicate different auxiliary information.

[0012] In this implementation, the wake-up signal may be an orthogonal sequence. This method of carrying information through mutually orthogonal sequences is beneficial for reducing the complexity of signal reception and detection.

[0013] In one possible design, the wake-up signal is a chirp signal; and the different wake-up signals indicate different auxiliary information, including:

[0014] Chirp signals with different starting frequencies indicate different auxiliary information.

[0015] In this implementation, the wake-up signal may be a chirp signal. This method of transmitting and receiving signals in a low-power analog domain helps reduce energy consumption.

[0016] In one possible design, the different wake-up signals indicate different auxiliary information, including:

[0017] Different time domain offset values ​​indicate different auxiliary information, and the time domain offset value is the time domain offset of the time domain resource where the wake-up signal is located relative to the time domain resource where the downlink synchronization signal is located; or,

[0018] Different frequency domain offset values ​​indicate different auxiliary information, and the frequency domain offset value is the frequency domain offset of the frequency domain resource where the wake-up signal is located relative to the frequency domain resource where the downlink synchronization signal is located.

[0019] In this implementation, the auxiliary information can be indicated by a resource offset value (eg, a time domain offset value or a frequency domain offset value) between the wake-up signal and the downlink synchronization signal, and various implementation schemes are available.

[0020] In one possible design, the auxiliary information includes one or more of service type, service quality, downlink signal reception quality information, and wake-up signal type.

[0021] In this implementation mode, the auxiliary information can specifically be parameters that meet actual needs, such as service type, service quality, downlink signal reception quality information, or wake-up signal type. Therefore, the access network equipment can send system information according to actual needs, which is highly applicable.

[0022] In one possible design, the service type includes one or more of reduced capability Redcap, enhanced mobile broadband eMBB, ultra-high reliability and ultra-low latency communication URLLC, and small data transmission SDT.

[0023] Under this implementation, when the service type is Redcap, the access network device can send configuration information related to Redcap to the terminal device; when the service type is eMBB, the access network device can send configuration information related to eMBB to the terminal device; when the service type is URLLC, the access network device can send configuration information related to URLLC to the terminal device; when the service type is SDT, the access network device can send configuration information related to SDT to the terminal device. Compared with the existing technology in which the access network device broadcasts the configuration information corresponding to all service types, the on-demand sending method of this application is conducive to saving network energy consumption.

[0024] In one possible design, the downlink signal reception quality information is downlink signal reception quality, a signal quality range to which the downlink signal reception quality belongs, or indication information of whether the downlink signal reception quality is greater than a signal quality threshold.

[0025] In this implementation mode, the signaling overhead can be reduced by reporting the signal quality range to which the downlink signal reception quality belongs, or the indication information of whether the downlink signal reception quality is greater than the signal quality threshold as the downlink signal reception quality information. Although the signaling overhead is greater when reporting the downlink signal reception quality as the downlink signal reception quality information, it is more accurate.

[0026] In one possible design, the auxiliary information is used to trigger the access network device to send part of the system information, including:

[0027] The auxiliary information is used to trigger the access network device to send the first part of the system information, the second part of the system information or the first tag value; the first tag value is used to determine whether the system information stored in the terminal device is valid, and all the information in the system information includes the first part of the system information, the second part of the system information and the first tag value.

[0028] In one possible design, the first part of information includes the S criterion and one or more items of cell access related information; the second part of information includes one or more items of wireless resource public configuration information and timer configuration information.

[0029] In one possible design, the system information is a master information block MIB and / or a system information block SIB1.

[0030] In one possible design, the auxiliary information includes a wake-up signal type; and sending the wake-up signal to the access network device includes:

[0031] Sending a third type of wake-up signal to the access network device, where the third type of wake-up signal is used to trigger the access network device to send the first part of information;

[0032] The method further comprises:

[0033] receiving the first part of information from the access network device;

[0034] In the case that the terminal device is able to reside in the first cell, a fourth type of wake-up signal is sent to the access network device, and the fourth type of wake-up signal is used to trigger the access network device to send the second part of information.

[0035] In this implementation, in the scenario of cell reselection, a wake-up signal can be sent through 2-step to obtain the required system information and complete cell camping.

[0036] In one possible design, the auxiliary information includes a wake-up signal type; and sending the wake-up signal to the access network device includes:

[0037] Sending a second type of wake-up signal to the access network device, where the second type of wake-up signal is used to trigger the access network device to send the first marking value;

[0038] The method further comprises:

[0039] receiving the first tag value from the access network device;

[0040] When it is determined that the system message stored in the terminal device is invalid based on the first tag value, a first type of wake-up signal is sent to the access network device, and the first type of wake-up signal is used to trigger the access network device to send all information in the system message.

[0041] In this implementation, when the terminal device returns from outside coverage to inside coverage, a wake-up signal can be sent in 2-step to obtain the required system information.

[0042] In a second aspect, the present application provides a communication method performed by a network device, which may be the network device itself or a unit or module (e.g., a chip) in the network device with corresponding functions. In this method, the network device sends a downlink synchronization signal to a terminal device, the downlink synchronization signal being used for downlink synchronization; the network device receives a wake-up signal from the terminal device, the wake-up signal indicating auxiliary information, the auxiliary information being used to trigger an access network device to send all or part of the system information.

[0043] In one possible design, the wake-up signal includes first indication information, where the first indication information indicates the auxiliary information.

[0044] In one possible design, different wake-up signals indicate different auxiliary information, and the association between different wake-up signals and different auxiliary information is predefined, or preconfigured, or indicated by the first message.

[0045] In one possible design, the wake-up signal is an orthogonal sequence, and different orthogonal sequences indicate different auxiliary information.

[0046] In one possible design, the wake-up signal is a chirp signal; and the different wake-up signals indicate different auxiliary information, including:

[0047] Chirp signals with different starting frequencies indicate different auxiliary information.

[0048] In one possible design, the different wake-up signals indicate different auxiliary information, including:

[0049] Different time domain offset values ​​indicate different auxiliary information, and the time domain offset value is the time domain offset of the time domain resource where the wake-up signal is located relative to the time domain resource where the downlink synchronization signal is located; or,

[0050] Different frequency domain offset values ​​indicate different auxiliary information, and the frequency domain offset value is the frequency domain offset of the frequency domain resource where the wake-up signal is located relative to the frequency domain resource where the downlink synchronization signal is located.

[0051] In one possible design, the auxiliary information includes one or more of service type, service quality, downlink signal reception quality information, and wake-up signal type.

[0052] In one possible design, the service type includes one or more of reduced capability Redcap, enhanced mobile broadband eMBB, ultra-high reliability and ultra-low latency communication URLLC, and small data transmission SDT.

[0053] In one possible design, the downlink signal reception quality information is downlink signal reception quality, a signal quality range to which the downlink signal reception quality belongs, or indication information of whether the downlink signal reception quality is greater than a signal quality threshold.

[0054] In one possible design, the auxiliary information is used to trigger the access network device to send part of the system information, including:

[0055] The auxiliary information is used to trigger the access network device to send the first part of the system information, the second part of the system information or the first tag value; the first tag value is used to determine whether the system information stored in the terminal device is valid, and all the information in the system information includes the first part of the system information, the second part of the system information and the first tag value.

[0056] In one possible design, the first part of information includes the S criterion and one or more items of cell access related information; the second part of information includes one or more items of wireless resource public configuration information and timer configuration information.

[0057] In one possible design, the system information is a master information block MIB and / or a system information block SIB1.

[0058] In one possible design, the auxiliary information includes a wake-up signal type; and the receiving the wake-up signal from the terminal device includes:

[0059] receiving a third type of wake-up signal from the terminal device, where the third type of wake-up signal is used to trigger the access network device to send the first part of information;

[0060] The method further comprises:

[0061] Sending the first part of information to the terminal device;

[0062] Receive a fourth type of wake-up signal from the terminal device, where the fourth type of wake-up signal is used to trigger the access network device to send the second part of information.

[0063] In one possible design, the auxiliary information includes a wake-up signal type; and the receiving the wake-up signal from the terminal device includes:

[0064] receiving a second type of wake-up signal from the terminal device, where the second type of wake-up signal is used to trigger the access network device to send the first marking value;

[0065] The method further comprises:

[0066] Sending the first tag value to the terminal device;

[0067] Receive a first type of wake-up signal from the terminal device, where the first type of wake-up signal is used to trigger the access network device to send all information in a system message.

[0068] In a third aspect, the present application provides a communication device, which may be the communication device itself, or a module, chip, or unit in the communication device. The communication device includes:

[0069] A transceiver unit, configured to receive a downlink synchronization signal from an access network device, wherein the downlink synchronization signal is used for downlink synchronization;

[0070] The transceiver unit is used to send a wake-up signal to the access network device, where the wake-up signal indicates auxiliary information, and the auxiliary information is used to trigger the access network device to send all or part of the system information.

[0071] In one possible design, the wake-up signal includes first indication information, where the first indication information indicates the auxiliary information.

[0072] In one possible design, different wake-up signals indicate different auxiliary information, and the association between different wake-up signals and different auxiliary information is predefined, or preconfigured, or indicated by the first message.

[0073] In one possible design, the wake-up signal is an orthogonal sequence, and different orthogonal sequences indicate different auxiliary information.

[0074] In one possible design, the wake-up signal is a chirp signal; and the different wake-up signals indicate different auxiliary information, including:

[0075] Chirp signals with different starting frequencies indicate different auxiliary information.

[0076] In one possible design, the different wake-up signals indicate different auxiliary information, including:

[0077] Different time domain offset values ​​indicate different auxiliary information, and the time domain offset value is the time domain offset of the time domain resource where the wake-up signal is located relative to the time domain resource where the downlink synchronization signal is located; or,

[0078] Different frequency domain offset values ​​indicate different auxiliary information, and the frequency domain offset value is the frequency domain offset of the frequency domain resource where the wake-up signal is located relative to the frequency domain resource where the downlink synchronization signal is located.

[0079] In one possible design, the auxiliary information includes one or more of service type, service quality, downlink signal reception quality information, and wake-up signal type.

[0080] In one possible design, the service type includes one or more of reduced capability Redcap, enhanced mobile broadband eMBB, ultra-high reliability and ultra-low latency communication URLLC, and small data transmission SDT.

[0081] In one possible design, the downlink signal reception quality information is downlink signal reception quality, a signal quality range to which the downlink signal reception quality belongs, or indication information of whether the downlink signal reception quality is greater than a signal quality threshold.

[0082] In one possible design, the auxiliary information is used to trigger the access network device to send part of the system information, including:

[0083] The auxiliary information is used to trigger the access network device to send the first part of the system information, the second part of the system information or the first tag value; the first tag value is used to determine whether the system information stored in the terminal device is valid, and all the information in the system information includes the first part of the system information, the second part of the system information and the first tag value.

[0084] In one possible design, the first part of information includes the S criterion and one or more items of cell access related information; the second part of information includes one or more items of wireless resource public configuration information and timer configuration information.

[0085] In one possible design, the system information is a master information block MIB and / or a system information block SIB1.

[0086] In one possible design, the auxiliary information includes a wake-up signal type; and the transceiver unit is configured to:

[0087] Sending a third type of wake-up signal to the access network device, where the third type of wake-up signal is used to trigger the access network device to send the first part of information;

[0088] receiving the first part of information from the access network device;

[0089] In the case that the terminal device is able to reside in the first cell, a fourth type of wake-up signal is sent to the access network device, and the fourth type of wake-up signal is used to trigger the access network device to send the second part of information.

[0090] In one possible design, the auxiliary information includes a wake-up signal type; and the transceiver unit is configured to:

[0091] Sending a second type of wake-up signal to the access network device, where the second type of wake-up signal is used to trigger the access network device to send the first marking value;

[0092] receiving the first tag value from the access network device;

[0093] When it is determined that the system message stored in the terminal device is invalid based on the first tag value, a first type of wake-up signal is sent to the access network device, and the first type of wake-up signal is used to trigger the access network device to send all information in the system message.

[0094] In a fourth aspect, the present application provides a communication device, which may be the communication device itself, or a module, chip, or unit in the communication device. The communication device includes:

[0095] A transceiver unit, configured to send a downlink synchronization signal to a terminal device, wherein the downlink synchronization signal is used for downlink synchronization;

[0096] The transceiver unit is used to receive a wake-up signal from the terminal device, where the wake-up signal indicates auxiliary information, and the auxiliary information is used to trigger the access network device to send all or part of the system information.

[0097] In one possible design, the wake-up signal includes first indication information, where the first indication information indicates the auxiliary information.

[0098] In one possible design, different wake-up signals indicate different auxiliary information, and the association between different wake-up signals and different auxiliary information is predefined, or preconfigured, or indicated by the first message.

[0099] In one possible design, the wake-up signal is an orthogonal sequence, and different orthogonal sequences indicate different auxiliary information.

[0100] In one possible design, the wake-up signal is a chirp signal; and the different wake-up signals indicate different auxiliary information, including:

[0101] Chirp signals with different starting frequencies indicate different auxiliary information.

[0102] In one possible design, the different wake-up signals indicate different auxiliary information, including:

[0103] Different time domain offset values ​​indicate different auxiliary information, and the time domain offset value is the time domain offset of the time domain resource where the wake-up signal is located relative to the time domain resource where the downlink synchronization signal is located; or,

[0104] Different frequency domain offset values ​​indicate different auxiliary information, and the frequency domain offset value is the frequency domain offset of the frequency domain resource where the wake-up signal is located relative to the frequency domain resource where the downlink synchronization signal is located.

[0105] In one possible design, the auxiliary information includes one or more of service type, service quality, downlink signal reception quality information, and wake-up signal type.

[0106] In one possible design, the service type includes one or more of reduced capability Redcap, enhanced mobile broadband eMBB, ultra-high reliability and ultra-low latency communication URLLC, and small data transmission SDT.

[0107] In one possible design, the downlink signal reception quality information is downlink signal reception quality, a signal quality range to which the downlink signal reception quality belongs, or indication information of whether the downlink signal reception quality is greater than a signal quality threshold.

[0108] In one possible design, the auxiliary information is used to trigger the access network device to send part of the system information, including:

[0109] The auxiliary information is used to trigger the access network device to send the first part of the system information, the second part of the system information or the first tag value; the first tag value is used to determine whether the system information stored in the terminal device is valid, and all the information in the system information includes the first part of the system information, the second part of the system information and the first tag value.

[0110] In one possible design, the first part of information includes the S criterion and one or more items of cell access related information; the second part of information includes one or more items of wireless resource public configuration information and timer configuration information.

[0111] In one possible design, the system information is a master information block MIB and / or a system information block SIB1.

[0112] In one possible design, the auxiliary information includes a wake-up signal type; and the transceiver unit is configured to:

[0113] receiving a third type of wake-up signal from the terminal device, where the third type of wake-up signal is used to trigger the access network device to send the first part of information;

[0114] Sending the first part of information to the terminal device;

[0115] Receive a fourth type of wake-up signal from the terminal device, where the fourth type of wake-up signal is used to trigger the access network device to send the second part of information.

[0116] In one possible design, the auxiliary information includes a wake-up signal type; and the transceiver unit is configured to:

[0117] receiving a second type of wake-up signal from the terminal device, where the second type of wake-up signal is used to trigger the access network device to send the first marking value;

[0118] Sending the first tag value to the terminal device;

[0119] Receive a first type of wake-up signal from the terminal device, where the first type of wake-up signal is used to trigger the access network device to send all information in a system message.

[0120] In a fifth aspect, the present application provides a communication device, which includes a processor, and the processor is used to execute a computer program so that the communication device executes any method as described in any one of the first aspect or the second aspect.

[0121] In one possible design, the communication device may be a chip that implements the method in any one of the first aspect or the second aspect, or a device including a chip.

[0122] In one possible design, the communication device further includes a transceiver, and the processor is coupled to the transceiver.

[0123] In one possible design, the communication device further includes a memory. A processor is coupled to the memory, the memory stores a computer program, and the processor is further configured to call the computer program in the memory. Alternatively, the processor and memory may be integrated.

[0124] In a sixth aspect, the present application provides a communication device, which includes a processor and an interface circuit, the interface circuit being used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor being used to implement any of the methods described in any of the first or second aspects through logic circuits or executing code instructions.

[0125] In a seventh aspect, the present application provides a computer-readable storage medium storing a computer program or instruction. When the computer program or instruction is executed by a computer, the method as described in any one of the first aspect or the second aspect is implemented.

[0126] In an eighth aspect, the present application provides a computer program product. When a computer reads and executes the computer program product, the computer executes any of the methods described in the first aspect or the second aspect.

[0127] In a ninth aspect, the present application provides a communication system, which includes a communication device for implementing the method described in any one of the first aspects above, and a communication device for implementing the method described in any one of the second aspects above.

[0128] The beneficial effects of the second to ninth aspects can refer to the beneficial effects of the first aspect and will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0129] FIG1 is a schematic diagram of the architecture of a communication system used in an embodiment of the present application;

[0130] FIG2 is a schematic diagram of periodic transmission of SIB1 in LTE;

[0131] FIG3 is a schematic diagram of sending SSB / SIB on demand;

[0132] FIG4 is a schematic diagram of an interaction flow of a communication method provided in an embodiment of the present application;

[0133] FIG5 is a schematic diagram of a 1-step method for obtaining system information according to an embodiment of the present application;

[0134] FIG6 is a schematic diagram of a 2-step method for obtaining system information according to an embodiment of the present application;

[0135] 7 is a schematic diagram of the association relationship between the first indication information and the auxiliary information provided in an embodiment of the present application;

[0136] FIG8 is a schematic diagram of the association relationship between the first indication information and the auxiliary information provided in an embodiment of the present application;

[0137] FIG9 is a schematic diagram of the association relationship between the first indication information and the auxiliary information provided in an embodiment of the present application;

[0138] FIG10 is a schematic diagram of the association relationship between the orthogonal sequence and auxiliary information provided in an embodiment of the present application;

[0139] FIG11 is a schematic diagram of chirp signals with different starting frequencies provided in an embodiment of the present application;

[0140] FIG12 is a schematic diagram of wake-up signals of different transmission resources provided in an embodiment of the present application;

[0141] FIG13 is a schematic structural diagram of a possible communication device provided in an embodiment of the present application;

[0142] FIG14 is a schematic structural diagram of a possible communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0143] The specific embodiments of the present application are further described in detail below with reference to the accompanying drawings.

[0144] 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.

[0145] 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.

[0146] 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.

[0147] To better understand the embodiments of the present application, the following first introduces the system architecture involved in the embodiments of the present application:

[0148] Please refer to Figure 1, which is a schematic diagram of the architecture of a communication system used in an embodiment of the present application. As shown in Figure 1, communication system 1000 includes a radio access network (RAN) 100 and a core network (CN) 200. Optionally, communication system 1000 may also include the Internet 300. RAN 100 includes at least one RAN node (such as 110a and 110b in Figure 1, collectively referred to as 110) and at least one terminal (such as 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 RAN node 110. RAN node 110 is wirelessly or wiredly connected to core network 200. The core network devices in core network 200 and RAN node 110 in RAN 100 may be different physical devices, or they may be the same physical device that integrates core network logical functions and radio access network logical functions.

[0149] The RAN 100 may be a cellular system related to the Third Generation Partnership Project (3GPP), such as a 4G or 5G mobile communication system, or a future-oriented evolutionary system (such as a 6G mobile communication system). The RAN 100 may also be an open access network (O-RAN or ORAN), a cloud radio access network (CRAN), or a wireless fidelity (WiFi) system. The RAN 100 may also be a communication system that integrates two or more of the above systems.

[0150] RAN node 110, sometimes also referred to as access network equipment, RAN entity, or access node, constitutes part of the communication system and facilitates wireless access for terminals. Multiple RAN nodes 110 in communication system 1000 can be of the same type or different types. In some scenarios, the roles of RAN node 110 and terminal 120 are relative. For example, network element 120i in Figure 1 can be a helicopter or drone, which can be configured as a mobile base station. For terminal 120j accessing RAN 100 via network element 120i, network element 120i is a base station; however, for base station 110a, network element 120i is a terminal. RAN node 110 and terminal 120 are sometimes referred to as communication devices. For example, base stations 110a and 110b in Figure 1 can be understood as communication devices with base station functionality, and terminals 120a-120j can be understood as communication devices with terminal functionality.

[0151] In one possible scenario, a RAN node may be a base station, an evolved NodeB (eNodeB), an access point (AP), a transmission reception point (TRP), 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, or an access node in a WiFi system. A RAN node may be a macro base station (such as 110a in FIG1 ), a micro base station or an indoor station (such as 110b in FIG1 ), a relay node or a donor node, or a wireless controller in a CRAN scenario. Optionally, a RAN node may also be a server, a wearable device, a vehicle or an onboard device. For example, an access network device in vehicle to everything (V2X) technology may be a road side unit (RSU). All or part of the functions of the RAN node in this application may also be implemented by software functions running on hardware, or by virtualized functions instantiated on a platform (such as a cloud platform). The RAN node in this application may also be a logical node, a logical module or software that can implement all or part of the RAN node functions.

[0152] In another possible scenario, multiple RAN nodes collaborate to assist terminals in achieving wireless access, with different RAN nodes implementing portions of the base station's functions. For example, a RAN node 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 implements the base station's radio resource control protocol and packet data convergence protocol (PDCP) functions, as well as the service data adaptation protocol (SDAP) functions. The DU implements the base station's radio link control layer and medium access control (MAC) layer functions, as well as some or all of the physical layer functions. For detailed descriptions of each of these protocol layers, please refer to the relevant technical specifications of the 3rd Generation Partnership Project (3GPP). The CU and DU can be separate or included in the same network element, such as the baseband unit (BBU). The RU may be included in a radio frequency device or a radio frequency unit, for example, in a remote radio unit (RRU), an active antenna unit (AAU) or a remote radio head (RRH).

[0153] Optionally, the RAN node may be expressed differently, such as an access network device. In this application, unless otherwise specified, the access network device is used to represent the node.

[0154] 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.

[0155] A terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, mobile equipment (ME), etc. The terminal can be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, autonomous driving, telemedicine, smart grid, smart furniture, smart office, smart wearable, smart transportation, smart city, etc. The terminal can be a mobile phone, tablet computer, computer with wireless transceiver function, wearable device, vehicle, drone, helicopter, airplane, ship, robot, robotic arm, smart home device, etc. The embodiments of the present application do not limit the device form of the terminal.

[0156] The core network may include one or more functional entities (also called core network elements, network elements, entities, etc.), such as network slice selection function (NSSF), network exposure function (NEF), network function repository function (NRF), policy control function (PCF), unified data management (UDM), access and mobility management function (AMF), authentication server function (AUSF), session management function (SMF), etc.

[0157] It should be noted that the above functional entity is merely a name and does not limit the entity. For example, the session management function could be replaced by "session management function entity" or another name. Furthermore, the session management function entity could correspond to an entity that includes other functions in addition to the session management function. The user plane function could also be replaced by "user plane function entity" or another name, and the user plane function entity could also correspond to an entity that includes other functions in addition to the user plane function. This is explained here in a unified manner and will not be repeated below.

[0158] It should be noted that the message names between network elements or the names of parameters in the messages in the following embodiments of the present application are only examples, and other names may be used in specific implementations. The embodiments of the present application do not make specific limitations on this.

[0159] In this application, "sending information to...(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...(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.

[0160] It should be understood that the terminal device in the embodiments of the present application can be any of the above-mentioned devices or chips, and the specific details are not limited here. Whether as a device or a chip, the terminal device can be manufactured, sold, or used as an independent product. In this embodiment and subsequent embodiments, only the terminal device is used as an example.

[0161] It should be understood that the device used to implement the functions of the access network device in the embodiments of the present application can be the access network device itself, or it can be a device that can support the access network device to implement the functions, such as a chip system or a combination of devices or components that can implement the functions of the access network device, which can be installed in the access network device. In the embodiments of the present application, the chip system can be composed of chips, or it can include chips and other discrete devices. In this embodiment and subsequent embodiments, only the access network device is used as an example.

[0162] The following is an explanation of the relevant technical features involved in the embodiments of the present application. It should be noted that these explanations are intended to make the embodiments of the present application easier to understand and should not be regarded as limiting the scope of protection claimed by the present application.

[0163] 1. System Information (SI)

[0164] In the long term evolution (LTE) system, SI can be divided into two categories: the master information block (MIB) and several system information blocks (SIBs). SIBs mainly include SIB1 to SIB21 (new system information blocks may be introduced in future versions). In the LTE system, MIB is carried on the physical broadcast channel (PBCH). The MIB transmission period is a fixed period of 40ms and is repeatedly sent within this 40ms, once in each radio frame, that is, it is sent four times in one period. SIB1 is carried on the physical downlink shared channel (PDSCH). The SIB1 transmission period is also a fixed period of 80ms. It is sent once in subframe 5 of each even-numbered radio frame, that is, it is sent four times in one period, as shown in Figure 2. For other SIBs (such as SIB2 to SIB21), they can be scheduled through SIB1, that is, their period and time domain starting position are indicated in SIB1.

[0165] In the LTE system, SIB1 includes cell access related information, cell selection information (ie, S criterion), etc., and SIB2 includes radio resource common configuration information, timer configuration information, etc.

[0166] In the new radio (NR) system, SI can be divided into three categories: MIB, SIB1, and other system information (OSI). SIB1 can also be described as the remaining minimum system information (RMSI). OSI includes other SIBs besides SIB1, such as SIB2 to SIB21, and more SIBs that may be expanded in the future. Among them, MIB is carried on PBCH and bundled with the synchronization signal, called SSB. The SSB period is variable based on network implementation. The SIB1 period is 160ms, during which the number of repetitions can be variable. The default repetition period is 20ms. The specific repetition period depends on the network implementation and the multiplexing format of SSB and CORESET. For example, the protocol defines three multiplexing styles / patterns for SSB and CORESET. For pattern 1, the SIB1 repetition period is 20ms; for pattern 2 and pattern 3, the SIB1 repetition period is the same as the SSB transmission period.

[0167] Unlike the LTE system, the SIB1 in the NR system contains more information, such as cell access related information, cell selection information (i.e., S criterion), radio resource public configuration information, timer configuration information, and related configuration information for different types of terminal devices or services.

[0168] 2. Scheduling of Type A and Type B

[0169] NR defines two different time domain resource allocation methods, Type A and Type B, which correspond to different time domain scheduling units. Type A corresponds to the time domain scheduling unit of slots, while Type B corresponds to non-slots.

[0170] 3. Chirp

[0171] A chirp signal is a signal whose frequency changes linearly over time. This change can be either an increase or a decrease in frequency. If this signal is converted to audio, it sounds similar to the chirping of birdsong, hence the name chirp signal.

[0172] To achieve network energy conservation, different equipment vendors and operators have adopted various energy-saving measures, such as energy conservation at the device level, site level, and network level. In addition, 3GPP Rel-18 has also launched research on network energy conservation. The energy-saving solutions related to SSB / SIB1 mainly include extending the SSB cycle, sending simplified SSBs, and sending SSB / SIBs on demand. As shown in Figure 3, taking the on-demand transmission of SSB / SIB as an example, the default is to broadcast only SSBs or simplified SSBs. After receiving the WUS sent by the terminal device, the transmission of SSBs and SIBs is turned on (for a period of time). Since the SSBs and SIBs of the cell are no longer always-on signals but are sent on demand, the number of symbols used to send SSBs and SIBs can be greatly reduced, thereby increasing the opportunity for time domain shutdown and achieving the purpose of saving power. However, currently, all SSBs / SIBs sent on-demand are sent in their entirety. For example, in the on-demand transmission of SIB1, all information contained in SIB1, such as cell access information, cell selection information (i.e., the S criterion), common radio resource configuration information, timer configuration information, and configuration information for different types of terminal devices or services, is sent. If there are no relevant terminal devices or services within the coverage area, this results in unnecessary message broadcasts and resource waste, which in turn increases network-side energy consumption.

[0173] Based on this, the present application proposes a communication method that is beneficial to saving network energy consumption.

[0174] The communication method and communication device provided by this application are described in detail below:

[0175] Please refer to Figure 4, which is a schematic diagram of the interactive process of the communication method provided in an embodiment of the present application. As shown in Figure 4, the communication method includes the following steps S401 to S402. The execution subject of the method shown in Figure 4 can be a terminal device and an access network device, or the execution subject of the method shown in Figure 4 can also be a chip in the terminal device and a chip in the access network device. For the convenience of description, Figure 4 mainly uses the terminal device and the access network device as an example of the execution subject of the method. It should be noted that Figure 4 is a schematic flow chart of an embodiment of the method of the present application, showing the detailed communication steps or operations of the method, but these steps or operations are only examples. The embodiment of the present application can also perform other operations or variations of the various operations in Figure 4. In addition, the various steps in Figure 4 can be executed in a different order from that presented in Figure 4, and it is possible that not all operations in Figure 4 need to be executed. Among them:

[0176] S401: The access network device sends a downlink synchronization signal to the terminal device. Correspondingly, the terminal device receives the downlink synchronization signal from the access network device.

[0177] In some feasible implementations, the terminal device may perform downlink synchronization based on a received downlink synchronization signal, wherein the downlink synchronization signal may be a primary synchronization signal (PSS) or a secondary synchronization signal (SSS).

[0178] Optionally, the terminal device may also determine a method for acquiring system information based on the received downlink synchronization signal, where the acquisition method includes two methods: direct acquisition or indirect acquisition. For example, the downlink synchronization signal may carry 1 bit of indication information. When the value of the 1 bit is 1, it indicates direct acquisition; when the value of the 1 bit is 0, it indicates indirect acquisition, and vice versa, which is not limited here. Generally speaking, when the network is busy (i.e., there are many online users and many terminal services), a direct acquisition method can be used, and when the network is idle (i.e., there are few online users and few terminal services), an indirect acquisition method can be used. It is understandable that if it is a direct acquisition method, after completing the downlink synchronization, the access network device can send all the information in the system information; if it is an indirect acquisition method, execute step S402.

[0179] S402: The terminal device sends a wake-up signal to the access network device. Correspondingly, the access network device receives the wake-up signal from the terminal device.

[0180] In some feasible implementations, the wake-up signal may indicate auxiliary information, which is used to trigger the access network device to send all or part of the system information. Here, the system information may be MIB and / or SIB1. For ease of description, the following mainly uses SIB1 as an example for understanding the system information.

[0181] In some implementations 1, the auxiliary information used to trigger the access network device to send part of the system information may be: the auxiliary information used to trigger the access network device to send the first part of the system information, the second part of the system information, or the first tag value, etc. The first tag value is used to determine whether the system information stored in the terminal device is valid. Generally speaking, when the value tag broadcast in the system information is the same as the value of the value tag stored in the terminal device, it indicates that the system information stored in the terminal device is valid; when the value tag broadcast in the system information is different from the value tag stored in the terminal device, it indicates that the system information stored in the terminal device is invalid / failed, and therefore the system information needs to be re-acquired.

[0182] It is understandable that all the information in the system information includes the first part of information, the second part of information, and the first flag value, or all the information in the system information includes the first part of information and the second part of information. Exemplarily, the first part of information includes one or more of the S criterion and cell access-related information, and the second part of information includes one or more of the radio resource common configuration information and timer configuration information.

[0183] Exemplarily, the S criterion may specifically include one or more of a cell minimum reception level (q-RxLevMin), a cell minimum reception level offset (q-RxLevMinoffset), and the like.

[0184] Exemplarily, the cell access related information may specifically include one or more of a public land mobile network identity list (plmn-IdentityList), a tracking area code (trackingAreaCode), a cell identifier (cell Identity), a cell barred identifier (cellBarred), and an indication of reselection to an intra-frequency neighboring area (intraFreqReselection).

[0185] Exemplarily, the radio resource public configuration information may specifically include one or more of configuration information related to reduced capability (Redcap), configuration information related to enhanced mobile broadband (eMBB), configuration information related to ultra-reliable low-latency communication (URLLC), configuration information related to small data transmission (SDT), configuration information related to normal uplink (NUL), and configuration information related to supplementary uplink (SUL). It should be noted that NUL can also be replaced by UL. To facilitate the distinction from SUL, the following unified description will be mainly based on the expression of "NUL".

[0186] Exemplarily, the timer configuration information may specifically include one or more of t300, t301, t310, n310, t311, n311, t319, etc. defined in 3GPPTS 38.331.

[0187] Generally speaking, the terminal device can obtain the system information required by the terminal device based on 1-step. As shown in Figure 5, in scenarios such as cell selection, terminal power on, or initial acquisition, the terminal device can send a wake-up signal to the access network device to trigger the access network device to send all information in the system information. Therefore, the access network device can send all information in the system information to the terminal device based on the received wake-up signal.

[0188] Optionally, the terminal device may also obtain the system information required by the terminal device based on 2-step. For example, in a scenario where the terminal device returns from outside coverage to within coverage, the terminal device may send a wake-up signal to the access network device to trigger the access network device to send the first tag value in the system information. When the terminal device determines that the system information stored in the terminal device is invalid based on the first tag value received from the access network device and the first tag value stored in the terminal device, the terminal device may further send a wake-up signal to the access network device to trigger the access network device to send all information in the system information. Therefore, the access network device may send all information in the system information to the terminal device based on the received wake-up signal.

[0189] Optionally, in the scenario where the terminal device returns from outside coverage to within coverage, the terminal device may also send a wake-up signal carrying the first tag value stored in the terminal device to the access network device. Therefore, the access network device may compare the received first tag value with the first tag value of the current network. When the received first tag value is different from the first tag value of the current network, it can be determined that the system information stored in the terminal device is invalid. Therefore, the access network device may send all the information in the system information to the terminal device. When the received first tag value is the same as the first tag value of the current network, it can be determined that the system information stored in the terminal device is valid. Therefore, the access network device may send a confirmation message to the terminal device, and the confirmation message may be carried by RRC signaling.

[0190] Optionally, in the cell reselection scenario, the terminal device can also obtain the system information required by the terminal device based on 2-step. As shown in Figure 6, after the terminal device performs cell reselection to determine the target cell, the terminal device can send a wake-up signal to the access network device to trigger the access network device to send the first part of the system information. Correspondingly, the access network device can send the first part of the information to the terminal device based on the received wake-up signal. Therefore, the terminal device can determine whether it can reside in the target cell based on the received first part of the information. If not, it will re-execute the cell reselection; if yes, it will further send a wake-up signal to the access network device to trigger the access network device to send the second part of the system information, so as to further obtain wireless resource public configuration information, timer configuration information, etc.

[0191] Optionally, in some implementation methods 2, the auxiliary information used to trigger the access network device to send part of the system information can also be: the auxiliary information is used to trigger the access network device to send configuration information related to Redcap, configuration information related to eMBB, configuration information related to URLLC, or configuration information related to SDT, etc. in the system information.

[0192] Exemplarily, the configuration information related to Redcap may include one or more items of Redcap common configuration (redcap-ConfigCommon), initial downlink bandwidth of RedCap (initialDownlinkBWP-RedCap), etc. in 3GPPTS 38.331.

[0193] For example, the configuration information related to eMBB may include one or more of Type A / slot-based scheduling, K1, K2, and other information of greater granularity. Here, K1 represents the time domain interval between the PDSCH and the transmission of an acknowledgment (ACK) / negative acknowledgement (NACK), and K2 represents the time interval between the receipt of a scheduling indication in downlink control information (DCI) and the transmission of uplink data.

[0194] Exemplarily, URLLC-related configuration information may include one or more of Type B / non-slot based scheduling mode (non-time slot based scheduling mode, time domain scheduling granularity is symbol level), smaller K1, K2 values, 2-step RACH configuration, etc.

[0195] Exemplarily, the SDT-related configuration information may include one or more items of the small data transmission common configuration (sdt-ConfigCommon) in 3GPPTS 38.331.

[0196] Optionally, in some implementation methods 3, the auxiliary information used to trigger the access network device to send part of the system information can also be: the auxiliary information is used to trigger the access network device to send UL-related configuration information in the system information, or SUL-related configuration information, etc.

[0197] Exemplarily, the UL-related configuration information may include uplink common configuration parameters on the UL carrier, including: frequency information of the UL carrier, initial uplink bandwidth (initial Uplink BWP) configuration, and timing advance timer configuration.

[0198] Exemplarily, the SUL-related configuration information may include uplink common configuration parameters on the SUL carrier, including: frequency information of the SUL carrier, initial uplink bandwidth (initial Uplink BWP) configuration, and timing advance timer configuration.

[0199] In one possible implementation method (one), the way in which the wake-up signal indicates auxiliary information may be that the wake-up signal directly carries first indication information, and the first indication information indicates the auxiliary information, or alternatively, the first indication information is used to trigger the access network device to send all or part of the information in the system information.

[0200] For example, taking the first indication information carried in the wake-up signal as 2 bits, as shown in Figure 7, when the value of the 2 bits is 11, it indicates triggering the sending of all the information in the system information; when the value of the 2 bits is 10, it indicates triggering the sending of the first part of the information in the system information; when the value of the 2 bits is 01, it indicates triggering the sending of the second part of the information in the system information; when the value of the 2 bits is 00, it indicates triggering the sending of the first tag value (or value tag) in the system information, and the first tag value is used to determine whether the system information stored in the terminal device is valid. Compared with the existing method of broadcasting all the information in the system information by the access network device, the on-demand acquisition method of the present application is conducive to saving network power consumption.

[0201] For example, taking the first indication information carried in the wake-up signal as 2 bits, as shown in Figure 7, when the value of these 2 bits is 11, it triggers the sending of all the information in the system information; when the value of these 2 bits is 10, it triggers the sending of the first part of the system information; when the value of these 2 bits is 01, it triggers the sending of the second part of the system information; and a 2-bit value of 00 is a reserved value. Compared to the existing method of broadcasting all the information in the system information by access network equipment, this on-demand acquisition method of the present application helps save network power consumption.

[0202] For another example, taking the first indication information carried in the wake-up signal as 2 bits, assuming that the auxiliary information is the service type, when the value of the 2 bits is 11, it indicates triggering the sending of configuration information related to Redcap in the system information; when the value of the 2 bits is 10, it indicates triggering the sending of configuration information related to eMBB in the system information; when the value of the 2 bits is 01, it indicates triggering the sending of configuration information related to URLLC in the system information; when the value of the 2 bits is 00, it indicates triggering the sending of configuration information related to Redcap in the system information.

[0203] For another example, take the first indication information carried in the wake-up signal as a bitmap, where each bit corresponds to a service type. When the value of the corresponding bit is "1", it indicates that the access network device is triggered to send the corresponding configuration information. As shown in Figure 8, bit 0 corresponds to SDT, bit 1 corresponds to URLLC, bit 2 corresponds to eMBB, and bit 3 corresponds to Redcap. When the first indication information is 1000, it indicates that the access network device is triggered to send the configuration information related to Redcap in the system message; when the first indication information is 0100, it indicates that the access network device is triggered to send the configuration information related to eMBB in the system message; when the first indication information is 0010, it indicates that the access network device is triggered to send the configuration information related to URLLC in the system message; when the first indication information is 0001, it indicates that the access network device is triggered to send the configuration information related to SDT in the system message. Alternatively, when the first indication information is 1100, it indicates that the access network device is triggered to send configuration information related to Redcap and configuration information related to eMBB in the system message; when the first indication information is 1110, it indicates that the access network device is triggered to send configuration information related to Redcap, eMBB, and URLLC in the system message, which are not listed here one by one. Compared with the existing method in which the access network device broadcasts the configuration information of all service types in the system information, the on-demand acquisition method of the present application is conducive to saving network power consumption.

[0204] For example, if the first indication information carried in the wake-up signal is 2 bits, when the value of these 2 bits is 11, it triggers the access network device to send NUL-related configuration information in the system message; when the value of these 2 bits is 10, it triggers the access network device to send SUL-related configuration information in the system message. Compared to the existing implementation method in which the access network device simultaneously broadcasts NUL-related configuration information and SUL-related configuration information, the on-demand acquisition method of the present application helps save network power consumption.

[0205] It should be noted that the relationship between the value of the above-mentioned first indication information and its corresponding meaning is only an example, and this application does not limit it.

[0206] Optionally, various auxiliary information in the embodiments of the present application can also be combined. For example, the auxiliary information may include service type and downlink signal reception quality information. For example, the first indication information carried in the wake-up signal can be an 8-bit bitmap, in which each bit corresponds to a service type or downlink signal reception quality information, and when the value of the corresponding bit is "1", it indicates that the access network device is triggered to send the corresponding configuration information. As shown in Figure 9, bit 0 corresponds to SDT, bit 1 corresponds to URLLC, bit 2 corresponds to eMBB, bit 3 corresponds to Redcap, bit 4 corresponds to SUL (equivalent to the downlink signal reception quality being less than the signal quality threshold), and bit 5 corresponds to NUL (equivalent to the downlink signal reception quality being greater than the signal quality threshold).

[0207] In one possible implementation (two), different wake-up signals may be associated with / indicate different auxiliary information (or alternatively, different wake-up signals may be used to trigger the access network device to send different information in the system information), where the association between different wake-up signals and different auxiliary information is predefined, preconfigured, or indicated by the first message. In other words, in addition to being indicated by additional first indication information, the auxiliary information may also be indicated by the wake-up signal itself.

[0208] It is understandable that the “predefined” involved in the embodiments of the present application can be understood as standard definition, which does not require other equipment configuration (and the network equipment or other terminal equipment cannot be changed), and is information recorded / written in advance in the hardware and / or software of the terminal equipment itself. “Preconfigured” can be understood as information recorded / written in advance in the hardware and / or software of the terminal equipment itself, which is determined by the equipment manufacturer and can be changed through software or hardware. “Indicated by the first message” is divided into the first message configuration sent by the network device and the first message configuration sent by the terminal device. If it is a network device configuration, the first message can be a radio resource control (RRC) signaling, a media access control-control element (MAC CE) or a system information block (SIB), etc. If it is a terminal device configuration, the first message can be PC5-RRC signaling. For the convenience of description, the following text mainly uses the association relationship between different wake-up signals and different auxiliary information as an example of protocol pre-definition for schematic explanation.

[0209] It is understandable that the auxiliary information involved in this application includes one or more of the following: service type, service quality, downlink signal reception quality information, and wake-up signal type (or referred to as signal transmission purpose, for example, the signal transmission purpose can be used to obtain all information in the system information, or to obtain the first part of the information, or to obtain the second part of the information, or to obtain the first tag value). The following describes the auxiliary information as service type, service quality, downlink signal reception quality information, and wake-up signal type.

[0210] Exemplarily, when the auxiliary information is a service type, the service type may include the following four categories: ① Redcap, ② eMBB, ③ URLLC, and ④ SDT.

[0211] As another example, when the auxiliary information is the quality of service (QoS) (or QoS requirement, or service QoS requirement), the service quality can be characterized by a quality class indicator (QCI) predefined by the protocol, or a 5G QoS identifier (5QI), or other characteristic quantities defined in the future 6G system. Taking 5QI as an example, Table 5.7.4-1 in 3GPP TS 23.501 defines the mapping relationship between standardized 5QI and QoS characteristics (as shown in Table 1 below). Generally speaking, 5QI mainly includes one or more of the following QoS characteristics: resource type, default priority level (PL), packet delay budget (PDB), packet error rate (PER), default maximum data burst volume (MDBV), and default averaging window (AW), etc. For example, as shown in Table 1, when the 5QI value is 1, it indicates that the resource type is the guaranteed bit rate (GBR) type, the priority is 20, the packet delay budget is 100ms, and the packet error rate is 10. -2 , the maximum data volume is a parameter to be defined, and the average time window is 2000ms.

[0212] Understandably, the present application can group 5QI values, for example, into Group 1, Group 2, Group 3, and Group 4, where each Group contains one or more 5QI values, and each Group corresponds to a service quality of service / QoS requirement. Based on this, the association between each Group and the wake-up signal can be predefined by the protocol, so that the corresponding service quality of service / QoS requirement can be obtained through the wake-up signal.

[0213] For example, assuming that the grouping rule / basis of the 5QI value is to divide the 5QI values ​​with a packet delay budget within the range of (0ms, 100ms] into Group 1, the 5QI values ​​with a packet delay budget within the range of (100ms, 200ms] into Group 2, the 5QI values ​​with a packet delay budget within the range of (200ms, 300ms] into Group 3, and the 5QI values ​​with a packet delay budget within the range of (300ms, 1100ms] into Group 4, then the 5QI values ​​included in Group 1 are 85, 86, 87, 80, 82, 83, 88, 89, 90, 84, 3, 75, 79, 69, 65, 1, 66, 67, 5, 7; then the 5QI values ​​included in Group 2 are 2, 71, 70; then the 5QI values ​​included in Group 3 are 4, 72, 73, 6, 8; then The 5QI values ​​included in 4 are 74, 76, and 9, respectively. The protocol predefines that Group 1 is associated with / corresponds to wake-up signal 1, Group 2 is associated with / corresponds to wake-up signal 2, Group 3 is associated with / corresponds to wake-up signal 3, and Group 4 is associated with / corresponds to wake-up signal 4. If the terminal device sends wake-up signal 1 to the access network device, the access network device can determine that the corresponding service quality of service is Group 1 based on wake-up signal 1. Therefore, the access network device can send information in the system information that meets the service quality of service based on Group 1.

[0214] It should be noted that the above only shows an example of using the data packet delay budget as the grouping rule / basis of the 5QI value, wherein the grouping rule / basis of the 5QI value can also be any one of the data packet error rate, maximum data volume, or average time window, or the grouping rule / basis of the 5QI value can also be a combination of multiple parameters such as the data packet delay budget, data packet error rate, maximum data volume, or average time window. For example, the grouping rule / basis of the 5QI value can be a combination of the data packet delay budget and the data packet error rate. For example, the grouping rule / basis of the 5QI value can be a combination of the data packet delay budget, the data packet error rate and the maximum data volume. They are not listed one by one here.

[0215] Table 1

[0216] As another example, when the auxiliary information is downlink signal reception quality information, the downlink signal reception quality information can be downlink signal reception quality, or the signal quality range to which the downlink signal reception quality belongs, or indication information of whether the downlink signal reception quality is greater than a signal quality threshold. For example, taking the downlink signal reception quality information as the signal quality range to which the downlink signal reception quality belongs (for example, the reference signal received power (RSRP) range), the signal quality range may include (-105dBm, +∞), (-∞, -105dBm]. Optionally, when the auxiliary information is indication information of whether the downlink signal reception quality is greater than the signal quality threshold, the signal quality threshold may be predefined by the protocol, or preconfigured, or configured by the access network device through RRC signaling, MAC CE or SIB. For example, the signal quality threshold may be -105dBm, the auxiliary information may be indication information that the downlink signal reception quality is greater than the signal quality threshold, or the auxiliary information may be indication information that the downlink signal reception quality is not greater than the signal quality threshold. As another example, when the auxiliary information is a wake-up signal type, the wake-up signal type may include wake-up signal type I, wake-up signal type II, wake-up signal type III, and wake-up signal type IV.

[0217] The following describes different implementation schemes of implementation method (2):

[0218] In an implementation scheme 1, the wake-up signal may be an orthogonal sequence, where different orthogonal sequences are associated with / indicate different auxiliary information, or alternatively described as different orthogonal sequences are used to trigger the access network device to send different information in the system information.

[0219] For example, as shown in Figure 10, taking auxiliary information as the service type, it is assumed that the protocol predefines 15 groups of orthogonal sequences, namely orthogonal sequence 0 to orthogonal sequence 14, and the protocol predefines: orthogonal sequence 0 is associated with Redcap (or orthogonal sequence 0 is used to trigger the access network device to send configuration information related to Redcap transmission in the system information); orthogonal sequence 1 is associated with eMBB (or orthogonal sequence 1 is used to trigger the access network device to send configuration information related to eMBB transmission in the system information); orthogonal sequence 2 is associated with URLLC (or orthogonal sequence 2 is used to trigger the access network device to send configuration information related to URLLC transmission in the system information); orthogonal sequence 3 is associated with SDT (or orthogonal sequence 3 is used to trigger the access network device to send configuration information related to SDT transmission in the system information ); orthogonal sequence 4 associates Redcap and eMBB (or orthogonal sequence 0 is used to trigger the access network device to send configuration information related to Redcap transmission and configuration information related to eMBB transmission in the system information); orthogonal sequence 5 associates Redcap and URLLC (or orthogonal sequence 0 is used to trigger the access network device to send configuration information related to Redcap transmission and configuration information related to URLLC transmission in the system information), ..., orthogonal sequence 14 associates Redcap, eMBB, URLLC and SDT (or orthogonal sequence 14 is used to trigger the access network device to send configuration information related to Redcap transmission, configuration information related to eMBB transmission, configuration information related to URLLC transmission, and configuration information related to SDT transmission in the system information). Among them, when the terminal device has SDT transmission, the terminal device sends orthogonal sequence 3 to the access network device on the determined time-frequency resources. When the access network device detects the orthogonal sequence 3, the access network device sends the configuration information related to SDT transmission in the system information.

[0220] For another example, taking the auxiliary information as the wake-up signal type, it is assumed that the protocol predefines four groups of orthogonal sequences, namely orthogonal sequence 0, orthogonal sequence 1, orthogonal sequence 2 and orthogonal sequence 3, and the protocol predefines: orthogonal sequence 0 is associated with wake-up signal type I (or orthogonal sequence 0 is used to trigger the access network device to send all information in the system information); orthogonal sequence 1 is associated with wake-up signal type II (or orthogonal sequence 1 is used to trigger the access network device to send the first tag value in the system information); orthogonal sequence 2 is associated with wake-up signal type III (or orthogonal sequence 2 is used to trigger the access network device to send the first part of the information in the system information); orthogonal sequence 3 is associated with wake-up signal type IV (or orthogonal sequence 3 is used to trigger the access network device to send the second part of the information in the system information). Among them, when the terminal device sends orthogonal sequence 3 and the access network device detects the orthogonal sequence 3, the access network device sends the second part of the information in the system information.

[0221] For another example, taking the auxiliary information as the signal quality range to which the downlink signal reception quality belongs, it is assumed that the protocol predefines two groups of orthogonal sequences, namely orthogonal sequence 0 and orthogonal sequence 1, and the protocol predefines: orthogonal sequence 0 is associated with a signal quality range (-105dBm, +∞) (or orthogonal sequence 0 is used to trigger the access network device to send NUL-related configuration information in the system information); orthogonal sequence 1 is associated with a signal quality range (-∞, -105dBm] (or orthogonal sequence 1 is used to trigger the access network device to send SUL-related configuration information in the system information). Among them, when the terminal device sends orthogonal sequence 0 and the access network device detects the orthogonal sequence 0, the access network device sends the NUL-related configuration information in the system information.

[0222] For another example, taking the auxiliary information as indicating whether the downlink signal reception quality is greater than a signal quality threshold, the protocol can pre-define that an orthogonal sequence 0 corresponds to downlink signal reception quality greater than the signal quality threshold, and an orthogonal sequence 1 corresponds to downlink signal reception quality not greater than the signal quality threshold. When the terminal device transmits orthogonal sequence 0 and the access network device detects the orthogonal sequence 0, the access network device transmits NUL-related configuration information in the system information.

[0223] It should be noted that the above-mentioned association relationship between different orthogonal sequences and different auxiliary information is only an example, and the embodiment of the present application does not limit the correspondence between orthogonal sequences and their corresponding meanings.

[0224] In an implementation scheme 2, the wake-up signal may be a chirp signal, wherein chirp signals with different starting frequencies indicate different auxiliary information, or alternatively, chirp signals with different starting frequencies are used to trigger the access network device to send different information in the system information.

[0225] For example, as shown in Figure 11, which is a schematic diagram of chirp signals with different starting frequencies provided by an embodiment of the present application, the starting frequencies of the chirp signals shown in (a) to (d) of Figure 11 are 0 GHz, 1 GHz, 2 GHz, and 3 GHz, respectively. Taking auxiliary information as the service type as an example, it is assumed that the protocol predefines: the chirp signal with a starting frequency of 0 GHz is associated with Redcap (or the chirp signal with a starting frequency of 0 GHz is used to trigger the access network device to send configuration information related to Redcap transmission in the system information); the chirp signal with a starting frequency of 1 GHz is associated with eMBB (or the chirp signal with a starting frequency of 1 GHz is used to trigger the access network device to send configuration information related to eMBB transmission in the system information); the chirp signal with a starting frequency of 2 GHz is associated with URLLC (or the chirp signal with a starting frequency of 2 GHz is used to trigger the access network device to send configuration information related to URLLC transmission in the system information); the chirp signal with a starting frequency of 3 GHz is associated with SDT (or the chirp signal with a starting frequency of 3 GHz is used to trigger the access network device to send configuration information related to SDT transmission in the system information). Among them, when the terminal device has SDT transmission, the terminal device can send a chirp signal with a starting frequency of 3GHz to the access network device. When the access network device detects the chirp signal with a starting frequency of 3GHz, the access network device sends the configuration information related to SDT transmission in the system information.

[0226] For another example, taking the auxiliary information as the wake-up signal type, it is assumed that the protocol predefines: a chirp signal with a starting frequency of 0 GHz is associated with a wake-up signal type I (or the protocol predefines a chirp signal with a starting frequency of 0 GHz to trigger the access network device to send all the information in the system information); a chirp signal with a starting frequency of 1 GHz is associated with a wake-up signal type II (or a chirp signal with a starting frequency of 1 GHz is used to trigger the access network device to send the first tag value in the system information); a chirp signal with a starting frequency of 2 GHz is associated with a wake-up signal type III (or a chirp signal with a starting frequency of 2 GHz is used to trigger the access network device to send the first part of the information in the system information); a chirp signal with a starting frequency of 3 GHz is associated with a wake-up signal type IV (or a chirp signal with a starting frequency of 3 GHz is used to trigger the access network device to send the second part of the information in the system information). When the terminal device sends a chirp signal with a starting frequency of 3 GHz, if the access network device detects the chirp signal with a starting frequency of 3 GHz, then the access network device sends the second part of the information in the system information.

[0227] For another example, taking the auxiliary information as the signal quality range to which the downlink signal reception quality belongs, it is assumed that the protocol predefines: the chirp signal associated signal quality range with a starting frequency of 0 GHz is (-105 dBm, +∞) (or the protocol predefines the chirp signal with a starting frequency of 0 GHz to trigger the access network device to send NUL-related configuration information in the system information); the chirp signal associated signal quality range with a starting frequency of 1 GHz is (-∞, -105 dBm] (or the chirp signal with a starting frequency of 1 GHz is used to trigger the access network device to send SUL-related configuration information in the system information). Among them, when the terminal device sends a chirp signal with a starting frequency of 0 GHz, if the access network device detects the chirp signal with a starting frequency of 0 GHz, then the access network device sends the NUL-related configuration information in the system information.

[0228] Optionally, there may also be combinations of various service types or various different auxiliary information. Therefore, in order to ensure that various service type combinations or various different auxiliary information combinations can be indicated, more associations between chirp signals of different starting frequencies and various service type combinations or various different auxiliary information combinations can be pre-defined.

[0229] In one implementation scheme 3, different transmission resources used to transmit the wake-up signal may correspond to different auxiliary information. Taking the time domain resources as an example, different time domain offset values ​​may be predefined to indicate different auxiliary information (or alternatively described as different time domain offset values ​​are used to trigger the access network device to send different information in the system information). The time domain offset value is the time domain offset of the time domain resource where the wake-up signal is located relative to the time domain resource where the downlink synchronization signal is located. Alternatively, taking the frequency domain resources as an example, different frequency domain offset values ​​may be predefined to indicate different auxiliary information (or alternatively described as different frequency domain offset values ​​are used to trigger the access network device to send different information in the system information), wherein the frequency domain offset value is the frequency domain offset of the frequency domain resource where the wake-up signal is located relative to the frequency domain resource where the downlink synchronization signal is located. It is understandable that the time domain offset of the time domain resource where the wake-up signal is located relative to the time domain resource where the downlink synchronization signal is located may specifically be the time domain offset of the start time of the time domain resource where the wake-up signal is located relative to the start time of the time domain resource where the downlink synchronization signal is located. The frequency domain offset of the frequency domain resource where the wake-up signal is located relative to the frequency domain resource where the downlink synchronization signal is located can be specifically the frequency domain offset of the starting frequency of the frequency domain resource where the wake-up signal is located relative to the starting frequency of the frequency domain resource where the downlink synchronization signal is located. Here, the downlink synchronization signal can be PSS or SSS. For the convenience of description, the following mainly uses PSS as an example for schematic explanation.

[0230] For example, please refer to Figure 12, which is a schematic diagram of wake-up signals for different transmission resources provided in an embodiment of the present application. As shown in Figure 12 (a), in the time domain, the time domain resource where the wake-up signal 0 is located has a time domain offset of △t0 relative to the time domain resource where the downlink synchronization signal (i.e., PSS) is located, the time domain resource where the wake-up signal 1 is located has a time domain offset of △t1 relative to the time domain resource where the PSS is located, the time domain resource where the wake-up signal 2 is located has a time domain offset of △t2 relative to the time domain resource where the PSS is located, and the time domain resource where the wake-up signal 3 is located has a time domain offset of △t3 relative to the time domain resource where the PSS is located.

[0231] In one implementation, taking auxiliary information as the service type as an example, the protocol can predefine: △t0 is associated with Redcap (or △t0 is used to trigger the access network device to send configuration information related to Redcap transmission in the system information); △t1 is associated with eMBB (or △t0 is used to trigger the access network device to send configuration information related to eMBB transmission in the system information); △t2 is associated with URLLC (or △t0 is used to trigger the access network device to send configuration information related to URLLC transmission in the system information); △t3 is associated with SDT (or △t0 is used to trigger the access network device to send configuration information related to SDT transmission in the system information). Among them, when the time domain resource of the wake-up signal sent by the terminal device to the access network device has a time domain offset of △t0 relative to the time domain resource where the PSS is located, the system information subsequently sent by the access network device includes configuration information related to Redcap transmission.

[0232] In another implementation, taking the auxiliary information as the wake-up signal type as an example, the protocol can predefine: △t0 is associated with wake-up signal type I (or △t0 is used to trigger the access network device to send all information in the system information); △t1 is associated with wake-up signal type II (or △t1 is used to trigger the access network device to send the first tag value in the system information); △t2 is associated with wake-up signal type III (or △t2 is used to trigger the access network device to send the first part of the system information); △t3 is associated with wake-up signal type IV (or △t3 is used to trigger the access network device to send the second part of the system information). Among them, when the time domain resource of the wake-up signal sent by the terminal device to the access network device has a time domain offset of △t0 relative to the time domain resource where the PSS is located, the access network device sends all the information in the system information.

[0233] As shown in Figure 12(b), in the frequency domain, the frequency domain resource where wake-up signal 0 is located has a frequency domain offset of Δf0 relative to the frequency domain resource where the PSS is located, the frequency domain resource where wake-up signal 1 is located has a frequency domain offset of Δf1 relative to the frequency domain resource where the PSS is located, the frequency domain resource where wake-up signal 2 is located has a frequency domain offset of Δf2 relative to the frequency domain resource where the PSS is located, and the frequency domain resource where wake-up signal 3 is located has a frequency domain offset of Δf3 relative to the frequency domain resource where the PSS is located. In one implementation, taking the auxiliary information as the service type as an example, Δf0 can be associated with Redcap, Δf1 can be associated with eMBB, Δf2 can be associated with URLLC, and Δf3 can be associated with SDT. Optionally, in another implementation, taking the auxiliary information as the wake-up signal type as an example, Δf0 can be associated with wake-up signal type I, Δf1 can be associated with wake-up signal type II, Δf2 can be associated with wake-up signal type III, and Δf3 can be associated with wake-up signal type IV.

[0234] For another example, taking the auxiliary information as the signal quality range to which the downlink signal reception quality belongs, it is assumed that the protocol predefines: the frequency domain offset value △f0 is associated with the signal quality range (-105dBm, +∞) (or the protocol predefines △f0 to trigger the access network device to send NUL-related configuration information in the system information); the frequency domain offset value △f1 is associated with the signal quality range (-∞, -105dBm] (or △f1 is used to trigger the access network device to send SUL-related configuration information in the system information). Among them, when the frequency domain resource of the wake-up signal sent by the terminal device to the access network device has a frequency domain offset of △f0 relative to the frequency domain resource where the PSS is located, the access network device sends the NUL-related configuration information in the system information.

[0235] Optionally, various auxiliary information in the embodiments of the present application can also be combined. For example, the auxiliary information may include service type and downlink signal reception quality information. If the wake-up signal is an orthogonal sequence, then it is necessary to set more associations between orthogonal sequences and different auxiliary information. If the wake-up signal is a chirp signal with different starting frequencies, then it is necessary to set more associations between chirp signals with different starting frequencies and different auxiliary information. If the auxiliary information is determined based on the resource offset value of the wake-up signal and the downlink synchronization signal, then it is necessary to set more associations between resource offset values ​​and different auxiliary information. This application will not give examples one by one here.

[0236] In an embodiment of the present application, auxiliary information is indicated by a wake-up signal, and the auxiliary information is used to trigger the on-demand sending of all or part of the content in the system information, thereby reducing the overhead of the system information and helping to save network energy consumption.

[0237] The communication device provided in this application will be described in detail below with reference to FIG. 13 and FIG. 14 .

[0238] It is understood that in order to implement the functions in the above embodiments, the communication device includes hardware structures and / or software modules corresponding to the execution of each function. It should be readily apparent to those skilled in the art that, in combination with the units and method steps of each example described in the embodiments disclosed in this application, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in hardware or in a manner driven by computer software depends on the specific application scenario and design constraints of the technical solution.

[0239] Figures 13 and 14 are schematic diagrams of the structures of possible communication devices provided in embodiments of the present application. These communication devices can be used to implement the functions of the terminal device or access network device in the above-mentioned method embodiments, thereby also achieving the beneficial effects of the above-mentioned method embodiments. In the embodiments of the present application, the communication device can be one of the terminal devices 120a-120j shown in Figure 1, or it can be the access network device 110a or 110b shown in Figure 1, or it can be a module (such as a chip) applied to the terminal device or access network device.

[0240] As shown in Figure 13, a communication device 1300 includes a processing unit 1310 and a transceiver unit 1320. The communication device 1300 is used to implement the functions of the terminal device or access network device in the method embodiment shown in Figure 4 above.

[0241] When the communication device 1300 is used to implement the functions of the terminal device in the method embodiment shown in FIG4 :

[0242] The transceiver unit 1320 is configured to receive a downlink synchronization signal from an access network device, where the downlink synchronization signal is used for downlink synchronization;

[0243] The transceiver unit 1320 is configured to send a wake-up signal to the access network device, where the wake-up signal indicates auxiliary information, and the auxiliary information is used to trigger the access network device to send all or part of the system information.

[0244] The processing unit 1310 is used to process downlink synchronization signals, etc.

[0245] When the communication device 1300 is used to implement the functions of the access network device in the method embodiment shown in FIG4 :

[0246] The transceiver unit 1320 is configured to send a downlink synchronization signal to a terminal device, where the downlink synchronization signal is used for downlink synchronization;

[0247] The transceiver unit 1320 is used to receive a wake-up signal from the terminal device, where the wake-up signal indicates auxiliary information, and the auxiliary information is used to trigger the access network device to send all or part of the system information.

[0248] The processing unit 1310 is used to process a wake-up signal, etc.

[0249] For a more detailed description of the processing unit 1310 and the transceiver unit 1320 , reference may be made to the relevant description in the method embodiment shown in FIG. 4 .

[0250] As shown in Figure 14, communication device 1400 includes a processor 1410 and an interface circuit 1420. Processor 1410 and interface circuit 1420 are coupled to each other. It is understood that interface circuit 1420 can be a transceiver or an input / output interface. Optionally, communication device 1400 may also include a memory 1430 for storing instructions executed by processor 1410, input data required by processor 1410 to execute instructions, or data generated after processor 1410 executes instructions.

[0251] When the communication device 1400 is used to implement the method shown in FIG. 4 , the processor 1410 is used to implement the functions of the processing unit 1310 , and the interface circuit 1420 is used to implement the functions of the transceiver unit 1320 .

[0252] When the communication device is a chip used in a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiment. The terminal device chip receives information sent to the terminal device by the access network device through other modules in the terminal device (such as a radio frequency module or antenna); or the terminal device chip sends information to other modules in the terminal device (such as a radio frequency module or antenna), and the information is sent by the terminal device to the access network device.

[0253] When the above-mentioned communication device is a module applied to an access network device, the access network device module implements the functions of the access network device in the above-mentioned method embodiment. The access network device module receives information from other modules in the access network device (such as a radio frequency module or an antenna), and the information is sent by the terminal device to the access network device; or, the access network device module sends information to other modules in the access network device (such as a radio frequency module or an antenna), and the information is sent by the access network device to the terminal device. The access network device module here can be a baseband chip of the access network device, or it can be a CU, DU or other module, or it can be a device under the open radio access network (O-RAN) architecture, such as an open CU, open DU and other devices.

[0254] It is understood that the processor 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, transistor logic devices, hardware components, or any combination thereof. The general-purpose processor may be a microprocessor or any conventional processor.

[0255] The method steps in the embodiments of the present application can be implemented in hardware or in software instructions that can be executed by a processor. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory, flash memory, read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, registers, hard disk, mobile hard disk, CD-ROM or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. The storage medium can also be an integral part of the processor. The processor and storage medium can be located in an ASIC. In addition, the ASIC can be located in an access network device or a terminal device. The processor and storage medium can also exist in the access network device or the terminal device as discrete components.

[0256] In the above embodiments, all or part of the embodiments may be implemented using software, hardware, firmware, or any combination thereof. When implemented using software, all or part of the embodiments may be implemented in the form of a computer program product. The computer program product includes one or more computer programs or instructions. When the computer program or instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are performed in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user device, or other programmable device. The computer program or instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another. For example, the computer program or instructions may be transferred from one website, computer, server, or data center to another website, computer, server, or data center via wired or wireless means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium, such as a floppy disk, hard disk, or magnetic tape; an optical medium, such as a digital video disk; or a semiconductor medium, such as a solid-state drive. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0257] In the various embodiments of the present application, unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced by each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationships.

[0258] It is understood that the various numbers used in the embodiments of this application are merely for ease of description and are not intended to limit the scope of the embodiments of this application. The order of the sequence numbers of the above-mentioned processes does not necessarily imply a specific order of execution; the order of execution of the processes should be determined by their functions and inherent logic.

Claims

1. A communication method, characterized in that: include: Receiving a downlink synchronization signal from an access network device, wherein the downlink synchronization signal is used for downlink synchronization; A wake-up signal is sent to the access network device, where the wake-up signal indicates auxiliary information, and the auxiliary information is used to trigger the access network device to send all or part of the system information.

2. The method according to claim 1, characterized in that The wake-up signal includes first indication information, where the first indication information indicates the auxiliary information.

3. The method according to claim 1, characterized in that Different wake-up signals indicate different auxiliary information, and the association relationship between different wake-up signals and different auxiliary information is predefined, or preconfigured, or indicated by the first message.

4. The method according to claim 3, characterized in that The wake-up signal is an orthogonal sequence, and different orthogonal sequences indicate different auxiliary information.

5. The method according to claim 3, characterized in that: The wake-up signal is a chirp signal; and the different wake-up signals indicate different auxiliary information, including: Chirp signals with different starting frequencies indicate different auxiliary information.

6. The method according to claim 3, characterized in that: The different wake-up signals indicate different auxiliary information, including: Different time domain offset values ​​indicate different auxiliary information, and the time domain offset value is the time domain offset of the time domain resource where the wake-up signal is located relative to the time domain resource where the downlink synchronization signal is located; or, Different frequency domain offset values ​​indicate different auxiliary information, and the frequency domain offset value is the frequency domain offset of the frequency domain resource where the wake-up signal is located relative to the frequency domain resource where the downlink synchronization signal is located.

7. The method according to any one of claims 1 to 6, characterized in that: The auxiliary information includes one or more of a service type, service quality, downlink signal reception quality information, and a wake-up signal type.

8. The method according to claim 7, characterized in that The service type includes one or more of reduced capability Redcap, enhanced mobile broadband eMBB, ultra-high reliability and ultra-low latency communication URLLC, and small data transmission SDT.

9. The method according to claim 7, characterized in that: The downlink signal reception quality information is downlink signal reception quality, a signal quality range to which the downlink signal reception quality belongs, or indication information of whether the downlink signal reception quality is greater than a signal quality threshold.

10. The method according to claim 7, characterized in that The auxiliary information is used to trigger the access network device to send part of the system information, including: The auxiliary information is used to trigger the access network device to send the first part of the system information, the second part of the information or the first tag value; the first tag value is used to determine whether the system information stored in the terminal device is valid, and all the information in the system information includes the first part of the information, the second part of the information and the first tag value.

11. The method according to claim 10, characterized in that The first part of information includes one or more of the S criteria and cell access related information; the second part of information includes one or more of the wireless resource public configuration information and timer configuration information.

12. The method according to any one of claims 1 to 11, characterized in that: The system information is a master information block MIB and / or a system information block SIB1.

13. A communication method, characterized in that: include: Sending a downlink synchronization signal to a terminal device, wherein the downlink synchronization signal is used for downlink synchronization; Receive a wake-up signal from the terminal device, the wake-up signal indicating auxiliary information, the auxiliary information is used to trigger the access network device Send all or part of the system information.

14. The method according to claim 13, characterized in that The wake-up signal includes first indication information, where the first indication information indicates the auxiliary information.

15. The method according to claim 13, characterized in that Different wake-up signals indicate different auxiliary information, and the association relationship between different wake-up signals and different auxiliary information is predefined, or preconfigured, or indicated by the first message.

16. The method according to claim 15, characterized in that The wake-up signal is an orthogonal sequence, and different orthogonal sequences indicate different auxiliary information.

17. The method according to claim 15, characterized in that The wake-up signal is a chirp signal; and the different wake-up signals indicate different auxiliary information, including: Chirp signals with different starting frequencies indicate different auxiliary information.

18. The method according to claim 15, characterized in that The different wake-up signals indicate different auxiliary information, including: Different time domain offset values ​​indicate different auxiliary information, and the time domain offset value is the time domain offset of the time domain resource where the wake-up signal is located relative to the time domain resource where the downlink synchronization signal is located; or, Different frequency domain offset values ​​indicate different auxiliary information, and the frequency domain offset value is the frequency domain offset of the frequency domain resource where the wake-up signal is located relative to the frequency domain resource where the downlink synchronization signal is located.

19. The method according to any one of claims 13 to 18, characterized in that: The auxiliary information includes one or more of a service type, service quality, downlink signal reception quality information, and a wake-up signal type.

20. The method according to claim 19, characterized in that The service type includes one or more of reduced capability Redcap, enhanced mobile broadband eMBB, ultra-high reliability and ultra-low latency communication URLLC, and small data transmission SDT.

21. The method according to claim 19, characterized in that The downlink signal reception quality information is downlink signal reception quality, a signal quality range to which the downlink signal reception quality belongs, or indication information of whether the downlink signal reception quality is greater than a signal quality threshold.

22. The method according to claim 19, characterized in that The auxiliary information is used to trigger the access network device to send part of the system information, including: The auxiliary information is used to trigger the access network device to send the first part of the system information, the second part of the information or the first tag value; the first tag value is used to determine whether the system information stored in the terminal device is valid, and all the information in the system information includes the first part of the information, the second part of the information and the first tag value.

23. The method according to claim 22, characterized in that The first part of information includes one or more of the S criteria and cell access related information; the second part of information includes one or more of the wireless resource public configuration information and timer configuration information.

24. The method according to any one of claims 13 to 23, characterized in that: The system information is a master information block MIB and / or a system information block SIB1.

25. A communication device, characterized in that: The method comprises a unit or module for executing the method according to any one of claims 1 to 12, or comprises a unit or module for executing the method according to any one of claims 13 to 24.

26. A communication device, characterized in that: It includes a processor and an interface circuit, wherein the interface circuit is used to receive signals from other communication devices outside the communication device and transmit them to the processor or send signals from the processor to other communication devices outside the communication device, and the processor is used to implement the method as described in any one of claims 1 to 12 through a logic circuit or execute code instructions, or to implement the method as described in any one of claims 13 to 24.

27. A computer-readable storage medium, characterized in that: The storage medium stores a computer program or an instruction. When the computer program or the instruction is executed by the communication device, the method according to any one of claims 1 to 12 is implemented, or the method according to any one of claims 13 to 24 is implemented.

28. A computer program product, characterized in that The method comprises a computer program code, and when the computer program code is executed on a computer, the method according to any one of claims 1 to 12 is implemented, or the method according to any one of claims 13 to 24 is implemented.

29. A communication system, characterized in that: It comprises a communication device for implementing the method described in any one of claims 1 to 12, and a communication device for implementing the method described in any one of claims 13 to 24.

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