Communication method and device

Abstract

The invention discloses a communication method and device, and relates to the technical field of wireless communication. The method comprises the following steps that: network equipment firstly sends first information for identifying whether a first cell is allowed to reside or access to terminal equipment; and if the terminal equipment determines to reside in or access to the first cell according to the first information, a first signal is sent to network equipment in the first cell, and the network equipment sends second information for cell reside or access to the terminal equipment according to the first signal.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of wireless communications, and in particular, to a communication method and device. Background Art

[0002] With the evolution of communication technology, the spectrum used by wireless communication is getting wider and wider, the number of transmitting antennas of network equipment is increasing, and the power consumption is getting higher and higher. Therefore, how to achieve energy saving of network equipment has received more and more attention. One of the main technical means to reduce the energy consumption of network equipment is to reduce the transmission of signals by network equipment.

[0003] In current communication systems, network devices need to periodically send some public information so that terminal devices can identify network devices and access the network. For cells with no or low service transmission requirements, network devices still need to periodically send public information, which results in high network device overhead. Summary of the invention

[0004] The embodiments of the present application provide a communication method and apparatus for saving power consumption of network equipment.

[0005] In an embodiment of the present application, a process is provided for a network device to send a public signal and a terminal device to access the network device, which is used to save power consumption of the network device.

[0006] Taking the first cell as an example, in one possible scenario, the network device can turn off data signal transmission and part of the control signal transmission in the first cell to save power consumption. In this application, the working mode in which the network device turns off data signal transmission and part of the control signal transmission in the first cell is referred to as energy-saving mode. The terminal device can send an uplink signal in the first cell to enable the network device to enter normal mode in the first cell so as to transmit data and control information. In the embodiment of the present application, the uplink signal that enables the network device to switch from energy-saving mode to normal mode in the first cell is referred to as the first signal. In another possible scenario, the network device turns off data signal transmission and part of the control signal transmission in the first cell, so that part of the control signal is abandoned for transmission, thereby saving power consumption by limiting the transmission capacity in this way; the terminal device can send an uplink signal in the first cell so that the control signal that the network device abandons before transmitting in the first cell is released. The above-mentioned signal that enables the network device to change from limiting the transmission capacity to releasing the transmission capacity is referred to as the first signal in this application.

[0007] In the following embodiments of the present application, in a possible implementation method, the control information sent by the network device in energy-saving mode or when the transmission capacity is limited is the first information, and the control information sent by the network device in normal mode or when the transmission capacity is not limited is the second information; the first information may be part of the information in the system message block 1 (SIB1) (which may be called a simplified version of SIB1), that is, part of the information in SIB1 is transmitted in energy-saving mode, and in energy-saving mode, another part of the information in SIB1 is abandoned for transmission, and the second information may be the full version of SIB1 or the part of SIB1 information that is abandoned for transmission in energy-saving mode.

[0008] The specific implementation method of the embodiment of the present application is introduced below.

[0009] In a first aspect, a communication method is provided, which can be used for a terminal device, and the method may include the following steps: receiving first information in a first cell, determining to reside in or access the first cell according to the first information, and sending a first signal in the first cell. The first information is used to identify whether the first cell is allowed to reside or access, and the first information includes one or more of the following: cell IP Multimedia Subsystem (IMS) emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information; the first signal is used to request a network device to send second information, and the second information is used for cell residency or access.

[0010] In a possible implementation manner, the first information further includes one or more of the following: cell selection information and cell access related information.

[0011] Optionally, the first information is partial information in SIB1 (ie, a simplified version of SIB1).

[0012] In the above implementation, the control information sent in the first cell includes the first information. For example, the first information may be part of the information in SIB1. Compared with sending all the information in SIB1, by reducing the sending of control information, the signal load can be reduced, and thus the power consumption of the network device can be reduced. At the same time, the first information includes information for identifying whether the first cell is allowed to reside or access, so that the terminal device can still initiate the process of accessing or residing in the first cell when the first cell is in energy-saving mode or the transmission capacity is limited.

[0013] In a possible implementation, after the first cell sends the first signal, it also includes: receiving the second information in the first cell, the second information including at least one item of the following information: cell IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information, cell selection information, cell access related information, system information scheduling information, service cell public configuration information, counter configuration information, user access control restriction information, and terminal recovery identification indication.

[0014] In the above implementation, the second information is SIB1.

[0015] In a possible implementation, the second information includes one or more of the following information: cell selection information, cell access related information, system information scheduling information, service cell common configuration information, counter configuration information, user access control restriction information, and terminal recovery identification indication.

[0016] In the above implementation, the second information is other information in SIB1 except the first information.

[0017] In a possible implementation, the receiving the first information in the first cell includes: receiving the first information on a first resource of the first cell. The method further includes: receiving first indication information on a second resource of the first cell, the first indication information indicating the first resource.

[0018] In a possible implementation manner, the first indication information is further used to indicate that the first cell is in an energy-saving mode.

[0019] The above implementation method can flexibly set the resource location of the first information, thereby improving the flexibility of the system.

[0020] In a possible implementation, the receiving the first information in the first cell includes: receiving the first information on a first resource of the first cell. The method also includes: receiving a PBCH on a second resource of the first cell, wherein the relative positions of the first resource and the second resource are preset or preconfigured.

[0021] In the above implementation, the relative positions of the PBCH and the resources of the first information are fixed, that is, the positions of the first resource and the second resource are relatively fixed. Since the positions of the first resource and the second resource are relatively fixed, signaling overhead can be saved compared to indicating the first resource position through the first indication information.

[0022] Optionally, the method further includes: receiving second indication information on the second resource, the second indication information indicating whether the first information is received. It can be understood that the second indication information can be used to indicate whether the first cell is in energy-saving mode, or to indicate whether the transmission capacity of the first cell is limited. Optionally, the second indication information can be carried in the pdcch-ConfigSIB1 field in the PBCH, or using reserved bits, or by newly added bits. The above implementation method can reduce the complexity of the user receiver detecting the first information.

[0023] In a possible implementation, the receiving the first information in the first cell includes: receiving the first information on a first resource of the first cell, the first resource also being used to carry a PBCH. In this implementation, the first information and the PBCH may be sent via one resource.

[0024] Optionally, the method may further include: determining whether the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited by the resources used by the demodulation reference signal. Optionally, the resources of the demodulation reference signal include one or more of the following: a sequence of a demodulation reference signal, a time domain resource of a demodulation reference signal, a frequency domain resource of a demodulation reference signal, a time-frequency resource of a demodulation reference signal (such as a pattern of a demodulation reference signal), etc. The above implementation method can enable the user to obtain the mode of the current cell while saving signaling overhead.

[0025] Optionally, after the first cell sends the first signal, it also includes: receiving a PBCH on the first resource of the first cell; or receiving a PBCH and the first information on the first resource of the first cell.

[0026] In one possible implementation, the resources of the first signal are associated with the index of the first synchronization signal block. The first synchronization signal block can be sent periodically, and within one period, it can be sent on multiple different beams in a time division + space division manner. Each first synchronization signal block sent within one sending period can be distinguished by an index, and the index of the first synchronization signal block can indicate the beam of the first synchronization signal block. Since the resources of the first signal are associated with the index of the first synchronization signal block, the network device can determine the index of the corresponding first synchronization signal block according to the resources of the first signal after receiving the first signal sent by the terminal device. Since the index of the first synchronization signal block is associated with the beam, the second information can be sent in the direction of the beam, thereby realizing beam-level cell wake-up and improving system flexibility.

[0027] Optionally, the first synchronization signal block includes a synchronization signal, a PBCH and the first information.

[0028] Optionally, the PBCH carries the index of the first synchronization signal block.

[0029] In a possible implementation, the method further includes: receiving a synchronization signal in the first cell; and determining whether to send the first signal according to a sequence of the synchronization signal, or determining configuration information of the first signal. This implementation can save signaling overhead.

[0030] In a possible implementation manner, sending the first signal in the first cell includes: if the first information is detected, determining to send the first signal in the first cell.

[0031] In the following embodiments of the present application, in another possible implementation, the control information sent by the network device in the energy-saving mode or when the transmission capacity is limited includes the first information and the third information, and the control information sent by the network device in the normal mode or when the transmission capacity is not limited includes the second information and the fourth information. The first information may be part of the information in the system message block 1 (SIB1) (which may be called a simplified version of SIB1), that is, part of the information in SIB1 is transmitted in the energy-saving mode, and in the energy-saving mode, another part of the information in SIB1 is abandoned for transmission, and the second information may be the full version of SIB1 or the part of SIB1 information that is abandoned for transmission in the energy-saving mode. The third information may be part of the information in the master information block (MIB) carried by the physical broadcast channel (PBCH) (which may be called a simplified version of MIB), that is, another part of the information in MIB is abandoned for transmission, and the fourth information may be the full version of MIB or the part of MIB information that is abandoned for transmission in the energy-saving mode.

[0032] In a second aspect, a communication method is provided, which can be used for a terminal device, and the method may include the following steps: receiving first information and third information in a first cell, determining to reside in or access the first cell according to the first information and the third information, and sending a first signal in the first cell. The first information and the third information are used for cell residency or access, the first information includes one or more of the following: cell IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information, the third information includes one or more of the following: cell lockout identifier and same-frequency reselection identifier; the first signal is used to request a network device to send second information and fourth information, and the second information and the fourth information are used for cell residency or access.

[0033] Optionally, the first information may be part of the information in the system message block 1 (SIB1) (which may be called a simplified version of SIB1), that is, part of the information in SIB1 is transmitted in the energy-saving mode, and the second information may be the full version of SIB1 or the part of SIB1 information that is abandoned in the energy-saving mode. The third information is part of the information in the MIB carried by the PBCH, and the fourth information is the MIB carried by the PBCH or other information in the MIB except the third information.

[0034] In the above implementation, compared with sending all the information in SIB1 and MIB, by reducing the sending of control information, the signal load can be reduced, and thus the power consumption of the network device can be reduced. At the same time, the first information and the third information include information for identifying whether the first cell is allowed to reside or access, so that the terminal device can still initiate the process of accessing or residing in the first cell when the first cell is in energy-saving mode or the transmission capacity is limited.

[0035] In a possible implementation manner, the first information further includes one or more of the following: cell selection information and cell access related information.

[0036] In a possible implementation, after the first cell sends the first signal, it also includes: receiving the second information in the first cell, the second information including at least one item of the following information: cell IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information, cell selection information, cell access related information, system information scheduling information, service cell public configuration information, counter configuration information, user access control restriction information, and terminal recovery identification indication.

[0037] In a possible implementation, the second information includes one or more of the following information: cell selection information, cell access related information, system information scheduling information, service cell common configuration information, counter configuration information, user access control restriction information, and terminal recovery identification indication.

[0038] In a possible implementation, after the first cell sends the first signal, it also includes: receiving the fourth information in the first cell, and the fourth information includes one or more of the following information: a cell locking flag, a same-frequency reselection flag, a system frame number, a SIB1 subcarrier spacing configuration information, a synchronization signal and a synchronization signal block (SSB) The frequency domain offset relative to the common resource block, the symbol position of the demodulation reference signal in the time domain, the search space and control resource set of SIB1, and a half-frame indication.

[0039] In the above method, the fourth information is MIB information.

[0040] In one possible implementation, the fourth information includes one or more of the following information: system frame number, SIB1 subcarrier spacing configuration information, frequency domain offset of the synchronization signal and SSB relative to the common resource block, symbol position of the demodulation reference signal in the time domain, SIB1 search space and control resource set, and half-frame indication.

[0041] In the above implementation, the fourth information is other information in the MIB except the third information.

[0042] In a possible implementation, the receiving the first information and the third information in the first cell includes: receiving the first information and the third information on a first resource of the first cell. The method further includes: receiving resource indication information on a second resource of the first cell, the resource indication information indicating the first resource. This implementation can flexibly set the resource location of the first information, thereby improving system flexibility.

[0043] In one possible implementation, the receiving of the first information and the third information in the first cell includes: receiving a first synchronization signal block in the first cell, the first synchronization signal block including a synchronization signal, the first information and the third information, and the resource indication information also indicating an index of the first synchronization signal block.

[0044] In a possible implementation, the receiving of the first information and the third information in the first cell includes: receiving a synchronization signal, the first information, and the third information in a first resource of the first cell; in the first resource, the relative position between the synchronization signal and the first information is preset or preconfigured; or, the relative position between the synchronization signal and the third information is preset or preconfigured; or, the relative position between the synchronization signal, the first information, and the second information is preset or preconfigured. Compared with indicating the resource positions of the first information and the third information through resource indication information, signaling overhead can be saved.

[0045] In a possible implementation, the resource of the first signal is associated with the index of the first synchronization signal block; wherein the first information and the third information are carried in the first synchronization signal block, and the first synchronization signal block also includes a synchronization signal. wherein the first synchronization signal block can be sent periodically, and within one period, it can be sent on multiple different beams in a time division + space division manner, each first synchronization signal block sent within one sending period can be distinguished by an index, and the index of the first synchronization signal block can indicate the beam of the first synchronization signal block. since the resource of the first signal is associated with the index of the first synchronization signal block, after receiving the first signal sent by the terminal device, the network device can determine the index of the corresponding first synchronization signal block according to the resource of the first signal, and since the index of the first synchronization signal block is associated with the beam, the second information can be sent in the direction of the beam, thereby realizing beam-level cell wake-up and improving system flexibility.

[0046] In a possible implementation, the method further includes: receiving a synchronization signal in the first cell; and determining whether to send the first signal according to a sequence of the synchronization signal, or determining configuration information of the first signal. This implementation can save signaling overhead.

[0047] In a possible implementation manner, sending the first signal in the first cell includes: if the first information is detected, determining to send the first signal in the first cell.

[0048] According to a third aspect, a communication method is provided, which is applied to a network device, and the method includes: sending first information in a first cell, the first information being used to identify whether the first cell allows residence or access, the first information including one or more of the following: cell IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information; receiving a first signal sent by a terminal device in the first cell, the first signal being used to request the network device to send second information, the second information being used for cell residence or access; and sending the second information in the first cell.

[0049] In a possible implementation, the method further includes: sending second indication information on the second resource, wherein the second indication information indicates whether the terminal device receives the first information.

[0050] Some optional implementations and beneficial effects of the third aspect can be referred to the first aspect and will not be repeated here.

[0051] In a fourth aspect, a communication method is provided, which is applied to a network device, and the method includes: sending first information and third information in a first cell, the first information and the third information are used for cell residence or access, the first information includes one or more of the following: cell IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information, the third information includes one or more of the following: cell lockout identifier and same-frequency reselection identifier; receiving a first signal in the first cell, the first signal is used to request the network device to send second information and fourth information, the second information and the fourth information are used for cell residence or access; sending the second information and the fourth information in the first cell.

[0052] In a possible implementation manner, the method further includes: sending a synchronization signal in the first cell, a sequence of the synchronization signal being associated with configuration information of the first signal.

[0053] Some optional implementations and beneficial effects of the fourth aspect can be referred to the second aspect and will not be repeated here.

[0054] In a fifth aspect, a communication device is provided, comprising a unit or module for executing the method as described in any one of the first aspect or the second aspect above, or comprising a unit or module for executing the method as described in any one of the third aspect or the fourth aspect above.

[0055] In a sixth aspect, a communication device is provided, comprising: one or more processors, configured to execute the method described in any one of the first aspect or the second aspect, or to execute the method described in any one of the third aspect or the fourth aspect.

[0056] In one possible implementation, the communication device also includes one or more memories; wherein the one or more memories store one or more programs, and when the programs are executed by the one or more processors, the device executes any method described in the first aspect or the second aspect, or executes any method described in the third aspect or the fourth aspect.

[0057] In the seventh aspect, a chip system is provided, which includes at least one chip and a memory, and the at least one chip is used to read and execute the program stored in the memory to implement the method described in any one of the first aspect or the second aspect, or to implement the method described in any one of the third aspect or the fourth aspect.

[0058] In an eighth aspect, a readable storage medium is provided, wherein the readable storage medium includes a program, and when the program is run on a device, the device executes any method described in the first aspect or the second aspect above, or executes any method described in the third aspect or the fourth aspect above.

[0059] In a ninth aspect, a program product is provided. When the program product is run on a device, the device executes the method described in any one of the first or second aspects, or executes the method described in any one of the third or fourth aspects.

[0060] The embodiments of the present application also provide a communication method and apparatus for configuring resources of a first signal for a terminal device in an energy-saving scenario, so as to ensure that the terminal device can wake up a cell in an energy-saving mode through the first signal, and then reside in or access the cell.

[0061] In a tenth aspect, a communication method is provided, which is applied to a terminal device, and the method includes: receiving configuration information of a first signal; and sending the first signal in a first cell according to the configuration information of the first signal.

[0062] In a possible implementation, the configuration information of receiving the first signal includes: receiving first information in the first cell, the first information carrying the configuration information of the first signal; wherein the first information is used to identify whether the first cell is allowed to reside or access, and the first information includes one or more of the following: cell IP multimedia subsystem IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information. Optionally, according to the configuration information of the first signal, the first signal is sent in the first cell.

[0063] A possible implementation manner further includes: receiving indication information, where the indication information indicates that the first information includes configuration information of the first signal.

[0064] In an eleventh aspect, a communication method is provided, which is applied to a network device, and the method includes: sending configuration information of a first signal; and receiving, in a first cell, the first signal sent by a terminal device according to the configuration information.

[0065] In a possible implementation, after the first cell receives the first signal sent by the terminal device according to the configuration information, it also includes: determining, according to the resource of the first signal, the index of the first synchronization signal block corresponding to the resource, the first synchronization signal block carrying the first information; and sending the second information on the resource.

[0066] In one possible implementation, the configuration information for sending the first signal includes: sending first information in the first cell, the first information carrying the configuration information of the first signal; wherein the first information is used to identify whether the first cell is allowed to reside or access, and the first information includes one or more of the following: cell IP multimedia subsystem IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information.

[0067] A possible implementation manner further includes: sending indication information, where the indication information indicates that the first information includes configuration information of the first signal.

[0068] Based on the tenth aspect or the eleventh aspect, optionally, the configuration information of the first signal is associated with a sequence of a synchronization signal.

[0069] Based on the tenth aspect or the eleventh aspect, optionally, the configuration information of the first signal includes one or more of the following:

[0070] Time domain indication information, used to indicate the time domain resource of the first signal;

[0071] Frequency domain indication information, used to indicate the frequency domain resources of the first signal;

[0072] Power domain indication information, used to indicate one or more of the target received signal strength, the maximum number of power ramp times, and the power ramp step size;

[0073] Code domain indication information, used to indicate a zero correlation domain of a sequence of the first signal and / or a root sequence of the first signal;

[0074] Association indication information is used to indicate that the resources of the first signal are associated with the index of the first synchronization signal block, and the first synchronization signal block includes a synchronization signal, a PBCH and first information, or includes a synchronization signal and a PBCH, or includes a synchronization signal, the first information and third information.

[0075] Based on the tenth aspect or the eleventh aspect, optionally, the configuration information of the first signal includes index information, and the index information indicates one or more of the following: time domain indication information, used to indicate the time domain resources of the first signal; frequency domain indication information, used to indicate the frequency domain resources of the first signal; power domain indication information, used to indicate one or more of the target received signal strength, the maximum number of power ramping times and the power ramping step size; code domain indication information, used to indicate the zero correlation domain of the sequence of the first signal and / or the root sequence of the first signal; association indication information, used to indicate the index association of the resources of the first signal with the first synchronization signal block.

[0076] Based on the tenth aspect or the eleventh aspect, optionally, the time domain indication information includes one or more of the following: the time domain offset of the time domain position of the first signal relative to the first synchronization signal block, or the absolute time slot position of the first signal; the time domain period of the first signal.

[0077] Based on the tenth aspect or the eleventh aspect, optionally, the frequency domain indication information includes one or more of the following: an offset of the frequency domain position of the first signal relative to the starting frequency domain position of the synchronization signal or the first information, and a subcarrier spacing of the first signal;

[0078] The index of the resources occupied by the first signal in the candidate frequency point set in the full frequency band, and the operation bandwidth indication information are used to indicate the bandwidth occupied by the first signal in the full frequency band.

[0079] In a twelfth aspect, a communication method is provided, which may include the following steps: a network device sends first information in a first cell, a terminal device determines to reside in or access the first cell according to the first information, and the terminal device sends a first signal in the first cell. The first information is used to identify whether the first cell is allowed to reside or access, and the first information includes one or more of the following: cell IP Multimedia Subsystem (IMS) emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information; the first signal is used to request the network device to send second information, and the second information is used for cell residency or access.

[0080] Some optional implementations and beneficial effects of the twelfth aspect can be found in the first and third aspects and will not be elaborated here.

[0081] In a thirteenth aspect, a communication method is provided, which may include the following steps: a network device receives first information and third information in a first cell, a terminal device determines to reside in or access the first cell according to the first information and the third information, and the terminal device sends a first signal in the first cell. The first information and the third information are used for cell residency or access, the first information includes one or more of the following: cell IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information, the third information includes one or more of the following: cell lockout identifier and same-frequency reselection identifier; the first signal is used to request the network device to send second information and fourth information, and the second information and the fourth information are used for cell residency or access.

[0082] Some optional implementations and beneficial effects of the thirteenth aspect can be found in the second and fourth aspects and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] Figure 1 A schematic diagram of the architecture of a mobile communication system used in an embodiment of the present application;

[0084] Figure 2 Schematic diagram of the SSB frame structure in the NR system;

[0085] Figure 3 Schematic diagram of SSB multi-beam in NR system;

[0086] Figure 4 This is a schematic diagram of the channel mapping model for the system message broadcast function in the NR system;

[0087] Figure 5 A flow chart of a communication method provided in an embodiment of the present application;

[0088] Figure 6 A schematic diagram of a method for sending first information provided in an embodiment of the present application;

[0089] Figure 7 A schematic diagram of control information sent by a network device when a first cell is in an energy-saving mode, and control information sent by the network device after the first cell is awakened, in an embodiment of the present application;

[0090] Figure 8 A possible flow chart of another communication method provided in an embodiment of the present application;

[0091] Fig. 9 A schematic diagram of a method for sending first information and third information provided in an embodiment of the present application;

[0092] Fig.10 A schematic diagram of another control information sent by a network device when a first cell is in an energy-saving mode and control information sent by a network device after the first cell is awakened in an embodiment of the present application;

[0093] Fig.11 A schematic flow chart of a communication method for implementing first signal resource configuration provided in an embodiment of the present application;

[0094] Fig.12 A schematic diagram of a time domain configuration of a first signal in an embodiment of the present application;

[0095] Fig.13 A schematic diagram of frequency domain configuration of a first signal in an embodiment of the present application;

[0096] Fig.14 A schematic diagram of the structure of a communication device provided in an embodiment of the present application;

[0097] Fig.15 A schematic diagram of the structure of another communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0098] The embodiments of the present application can be applied to various communication systems, for example: global system for mobile communications (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WIMAX) communication system, fifth generation (5G) system or new radio (NR), or applied to future communication systems or other similar communication systems.

[0099] Figure 1 FIG. 1 is a schematic diagram of the architecture of a communication system 1000 used in an embodiment of the present application. Figure 1 As shown, the communication system includes a wireless access network 100 and a core network 200. Optionally, the communication system 1000 may also include the Internet 300. The wireless access network 100 may include at least one wireless access network device (such as Figure 1 110a and 110b), and may further include at least one terminal (such as Figure 1 120a-120j in the figure). The terminal is connected to the wireless access network device by wireless means, and the wireless access network device is connected to the core network by wireless or wired means. The core network device and the wireless access network device can be independent and different physical devices, or the functions of the core network device and the logical functions of the wireless access network device can be integrated on the same physical device, or part of the functions of the core network device and part of the functions of the wireless access network device can be integrated on one physical device. Terminals and wireless access network devices can be connected to each other by wired or wireless means. Figure 1This is just a schematic diagram. The communication system may also include other network devices, such as wireless relay devices and wireless backhaul devices. Figure 1 Not drawn in.

[0100] The wireless access network equipment may be a base station, an evolved NodeB (eNodeB), a transmission reception point (TRP), a next generation NodeB (gNB) in the fifth generation (5G) mobile communication system, a next generation base station in the sixth generation (6G) mobile communication system, a base station in a future mobile communication system, or an access node in a WiFi system, etc.; it may also be a module or unit that completes part of the functions of a base station, for example, it may be a central unit (CU) or a distributed unit (DU). The CU here completes the functions of the radio resource control protocol and the packet data convergence protocol (PDCP) of the base station, and may also complete the functions of the service data adaptation protocol (SDAP); the DU completes the functions of the radio link control layer and the medium access control (MAC) layer of the base station, and may also complete the functions of part or all of the physical layer. For the specific description of each of the above protocol layers, please refer to the relevant technical specifications of the 3rd generation partnership project (3GPP). The wireless access network device may be a macro base station (such as Figure 1 110a), or a micro base station or an indoor station (such as Figure 1 110b), may also be a relay node or a donor node, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device.

[0101] The terminal may also be referred to as a terminal device, user equipment (UE), mobile station, mobile terminal, etc. The terminal can be widely used in various scenarios, for example, device-to-device (D2D), vehicle-to-everything (V2X) communication, machine-type communication (MTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, etc. The terminal may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a wearable device, a vehicle, a drone, a helicopter, an airplane, a ship, a robot, a mechanical arm, a smart home device, etc. The embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal.

[0102] The network equipment and terminal can be fixed or movable. The network equipment and terminal can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; can also be deployed on the water surface; can also be deployed on airplanes, balloons and artificial satellites. The embodiments of the present application do not limit the application scenarios of the network equipment and terminals.

[0103] The roles of network devices and terminals can be relative, for example, Figure 1 The helicopter or drone 120i in the figure can be configured as a mobile network device. For the terminals 120j that access the wireless access network 100 through 120i, the drone 120i is a network device; but for the network device 110a, 120i is a terminal, that is, 110a and 120i communicate through the wireless air interface protocol. Of course, 110a and 120i can also communicate through the interface protocol between network devices. In this case, relative to 110a, 120i is also a network device. Therefore, network devices and terminals can be collectively referred to as communication devices. Figure 1 110a and 110b in the figure may be referred to as communication devices having network device functions. Figure 1 120a-120j in the figure can be called communication devices with terminal functions.

[0104] Network devices and terminals, network devices and network devices, and terminals and terminals can communicate through authorized spectrum, unlicensed spectrum, or both; can communicate through spectrum below 6 gigahertz (GHz), spectrum above 6 GHz, or spectrum below 6 GHz and spectrum above 6 GHz. The embodiments of the present application do not limit the spectrum resources used for wireless communication.

[0105] In the embodiments of the present application, the functions of the network device may also be performed by a module (such as a chip) in the network device, or by a control subsystem including the network device function. The control subsystem including the network device function here may be a control center in the above-mentioned application scenarios such as smart grid, industrial control, smart transportation, smart city, etc. The functions of the terminal may also be performed by a module (such as a chip or a modem) in the terminal, or by a device including the terminal function.

[0106] In the embodiment of the present application, the network device sends a downlink signal or downlink information to the terminal, and the downlink information is carried on the downlink channel; the terminal sends an uplink signal or uplink information to the base station, and the uplink information is carried on the uplink channel. In order to communicate with the base station, the terminal needs to establish a wireless connection with the cell controlled by the base station. The cell that has established a wireless connection with the terminal is called the service cell of the terminal.

[0107] In order to make the purpose, technical solution and advantages of the present application more clear, the present application will be further described in detail below in conjunction with the accompanying drawings. The specific operation method in the method embodiment can also be applied to the device embodiment or the system embodiment.

[0108] Below, some terms used in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

[0109] (1) Synchronization signal block (SSB)

[0110] SSB is used for initial access of terminal equipment. It is a normally open broadcast signal of network equipment. The broadcast signal can be sent periodically to carry some public information that network equipment needs to send periodically. The public information may include the primary synchronization signal (PSS), secondary synchronization signal (SSS) and physical broadcast channel (PBCH) used for synchronization of terminal equipment with the network. PSS and SSS can also be collectively referred to as synchronization signal (SS). PBCH carries the master information block (MIB), which includes information about the cell accessed by the terminal equipment and resource indication of system information block 1 (SIB1). PSS and SSS can be used to identify different physical cells.

[0111] The frame structure of SSB on time-frequency resources is as follows Figure 2 To support beamforming for initial access, the NR system introduces a synchronization signal burst set (SS burst set) to support beam scanning for SSB transmission. Figure 3 As shown, within the SS burst set period, a maximum of 64 SSBs can be transmitted in different beams in a time division + space division manner.

[0112] (2) PBCH

[0113] PBCH is mainly used to carry MIB, which contains information required for initial access of terminal devices. In the embodiment of the present application, PBCH and MIB can be replaced with each other, and sending / receiving PBCH can also be understood as sending / receiving MIB. For example, Table 1 shows some information included in MIB in the prior art:

[0114] Table 1. Contents of MIB

[0115]

[0116]

[0117] In addition, PBCH can also include additional information, such as a 4-bit system frame number (SFN) low-order index, 1 bit to indicate whether the SS burst set is located in the first half or the second half of the frame, 1 bit to indicate the highest bit of the SSB frequency domain offset (Kssb) relative to the CRB, 0 to 3 bits to indicate the time index of the SSB, and the PBCH scrambling code to indicate the SSB number.

[0118] (3) System information block (SIB)

[0119] The system message block is a resource block that carries system messages. System messages are classified and broadcast to terminal devices on different system message blocks. Among them, the scheduling information of SIB1 is notified by the MIB in the SSB, and the scheduling information of other SIBs is notified by SIB1. When the system message needs to be updated, the network device notifies the terminal device through paging to receive the update at the specified resource.

[0120] Figure 4 The schematic diagram of the channel mapping relationship in the current MIB and SIB1 transmission process is shown. MIB and SIB1 are carried in the broadcast control channel (BCCH). The MIB carried in the BCCH is mapped to the broadcast channel (BCH) of the transport layer for transmission, and the BCH is mapped to the PBCH of the physical layer and broadcasted at a certain period. The SIB1 carried in the BCCH is mapped to the downlink synchronization channel (DL-SCH) of the transport layer, and the DL-SCH is mapped to the physical downlink shared channel (PDSCH) of the physical layer and broadcasted at a certain period.

[0121] The search space, subcarrier spacing and other configurations of SIB1 are given in the SSB, and the terminal device can receive SIB1 based on the information in the SSB. SIB1 contains relevant information when evaluating whether a terminal device is allowed to access a cell, and defines the scheduling of other system information. It also contains radio resource configuration information common to all terminal devices and prohibition information applied to unified access control. The load of SIB1 is significantly larger than that of SSB. SIB1 carries important information required for terminal devices to access a cell. For example, Table 2 shows some of the information included in SIB1.

[0122] Table 2. Contents of SIB1

[0123]

[0124] (4) Network energy-saving technology

[0125] The present application relates to a network energy-saving technology. The scenarios to which the present application applies may have the following different interpretations.

[0126] The first one is that the network equipment needs to distinguish between "energy-saving mode" and "normal mode" for a cell. In energy-saving mode, for cells with no data services or extremely light-loaded services, the network equipment turns off data signal transmission and part of the control signal transmission in the cell. When the terminal device has service demand in the cell, or when the service demand of the cell that was originally a light-loaded service increases, the terminal device can wake up the cell by sending an uplink signal, and enable the network device to switch from energy-saving mode to normal mode through the uplink signal, and release the restriction on transmission capacity to facilitate the transmission of data and control information. In normal mode, the network equipment normally sends all data and all control information in each cell. In this way, only in the cell that is in energy-saving mode does the terminal device need to send the first signal to enable the network device to transmit all data and control information.

[0127] The second type is that the network device does not need to distinguish between "energy-saving mode" and "normal mode" for a cell. The network device in each cell sends signals according to the solution provided by this application. That is, in each cell, the network device first turns off the data signal transmission and part of the control signal transmission, and achieves energy saving of the network device by limiting the transmission capacity. The terminal device can send an uplink signal to enable the network device to lift the restriction on the transmission capacity in the cell. In this way, the terminal device needs to send a first signal in each cell to enable the network device to transmit all data and control information.

[0128] It should be noted that the energy-saving mode described in this application is an abbreviation for a state in which a network device is in a cost-saving state, and the energy-saving mode can also be replaced by a sleep mode or a minimalist mode or other names. For example, the energy-saving mode can also be called the first mode, and the normal mode can also be called the second mode.

[0129] It should be noted that the present application does not specifically limit the name, form and function of the first signal. The first signal can also be understood as a wake-up signal (WUS) or an uplink WUS. For example, waking up the first cell by the first signal in the present application can also be understood as: the first signal is used to request the network device to send information for initial access in the first cell, such as sending SS, PBCH and SIB1, or sending part of the information in SS, PBCH and SIB1, or sending part of the information in SS, PBCH and SIB1, or sending part of the information in SS, PBCH and SIB1.

[0130] How to save power consumption of network devices and ensure access or resident of terminal devices is a problem that needs to be solved at present. To this end, the embodiment of the present application provides a communication method, which can be applied to the above energy-saving scenario to save power consumption of network devices. For specific instructions, please refer to Figure 5 and Figure 8 On the other hand, the embodiment of the present application also provides a communication method for configuring the resources of the first signal for the terminal device in an energy-saving scenario, so as to ensure that the terminal device releases the restriction on the transmission capacity of the network device through the first signal. For specific instructions, please refer to Fig.11 and related descriptions.

[0131] The communication method provided in the embodiment of the present application is described by taking a network device and a terminal device as examples. The network device in the embodiment of the present application may be a network device, or a chip, unit or module in the network device. For example, the network device may be the aforementioned Figure 1 The access network device 110a or the access network device 110b in the embodiment of the present application can be a terminal device, or a chip, unit or module in the terminal device, such as the aforementioned Figure 1 Any terminal 120 shown. The terminal device may also be a communication device with terminal functions or a chip, unit or module inside a communication device with terminal functions. For ease of understanding, the embodiments of the present application are described by taking the terminal device as a terminal device or a chip, unit or module inside a terminal device, and the network device as a network device or a chip, unit or module inside a network device as an example.

[0132] In order to make the purpose, technical solution and advantages of the present application clearer, some terms involved in the embodiments of the present application are first explained below. Taking the first cell as an example, the following first information, second information, third information, fourth information and fifth information are public signals or control information sent by the network device when the transmission capacity of the first cell is limited or released:

[0133] (1) First Information

[0134] The first information is used to identify whether the first cell is allowed to reside or access. In an embodiment of the present application, the first information may be a simplified version of SIB1, that is, only part of the information in SIB1 is included. Compared with sending a large amount of control information contained in SIB1 in the first cell when the transmission capacity is not limited, sending part of the information in SIB1 in the first cell when the transmission capacity is limited, thereby achieving network energy saving by shutting down part of the control signal transmission in the first cell.

[0135] For example, the first information may include one or more of the following:

[0136] -Cell IMS emergency call capability information. Optionally, the cell IMS emergency call capability information may include one or more of the following: an IMS emergency support indication (for example, ims-EmergencySupport in Table 2), used to indicate whether the cell supports the IMS emergency bearer service of the terminal device in limited service mode; an IMS-based emergency call support indication (for example, eCallOverIMS-Support in Table 2), used to indicate whether the cell supports IMS emergency calls.

[0137] - Connection establishment failure control information. The content of the connection establishment failure control information can refer to connEstFailureControl in SIB1 in the current protocol.

[0138] -nr-NS maximum power list, according to which the terminal device determines the maximum power that can be output per time slot on the serving cell carrier. The content of the nr-NS maximum power list can refer to nr-NS-PmaxList in SIB1 in the current protocol.

[0139] -Power information. The content of the power information can refer to ss-PBCH-BlockPower in the serving cell common configuration information in SIB1 in the current protocol.

[0140] Optionally, the first information may further include one or more of the following:

[0141] -Cell selection information. The cell selection information includes the contents of cellSelectionInfo in SIB1 in the current protocol, such as q-RxLevMin, which is used to indicate the minimum RSRP level required for cell selection / reselection in the cell.

[0142] -Cell access related information: The contents of cell access related information can refer to cellAccessRelatedInfo in SIB1 in the current protocol, such as PLMN number, etc.

[0143] Optionally, the first information may not include one or more of the following: system information scheduling information (for example, si-SchedulingInfo in Table 2), counter configuration information (for example, ue-TimersAndConstants in Table 2), user access control restriction information (for example, uac-BarringInfo in Table 2), terminal recovery identification indication (for example, useFullResumeID in Table 2), and service cell common configuration information other than SSB power.

[0144] (2) Second Information

[0145] The second information is used for cell residence or access. Optionally, the second information is a complete SIB or information in the SIB except the second information.

[0146] In a possible implementation, the second information may include one or more of the following: cell selection information, cell access related information, system information scheduling information, serving cell common configuration information (which may not include SSB power information), counter configuration information, user access control restriction information, and terminal recovery identification indication. That is, the second information may be other information in SIB1 except the first information.

[0147] In another possible implementation, the second information may include, in addition to the above information, one or more of the following: cell IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information. That is, the second information may be SIB1.

[0148] (3) Third Party Information

[0149] The third information is used to identify whether the first cell is allowed to reside or access. In an embodiment of the present application, the third information may be a simplified version of the MIB, that is, only part of the information in the MIB carried by the PBCH. Compared with sending a large amount of control information contained in the MIB in the first cell when the transmission capacity is not limited, sending part of the information in the MIB in the first cell when the transmission capacity is limited, thereby achieving network energy saving by shutting down part of the control signal transmission in the first cell.

[0150] For example, the third information includes one or more of the following:

[0151] -Cell blocking flag, used to indicate whether the cell allows the terminal device to reside in or access the cell. The terminal device can determine whether the first cell accepts the new terminal device according to the cell blocking flag, thereby avoiding the situation where subsequent random access to the first cell fails.

[0152] -Same-frequency reselection flag, used to indicate whether same-frequency cell reselection is allowed, that is, whether the terminal device is allowed to access other cells of the same frequency.

[0153] Optionally, the third information may not include one or more of the following: system frame number, SIB1 subcarrier spacing configuration information, frequency domain offset of SSB relative to the common resource block, symbol position of DMRS in the time domain, search space and control resource set of SIB1 and half-frame indication.

[0154] Taking the content of the MIB shown in Table 1 as an example, the third information includes cellBarred and intraFreqReselection, but does not include systemFrameNumber, subCarrierSpacingCommon, ssb-SubcarrierOffset, dmrs-TypeA-Position and pdcch-ConfigSIB1.

[0155] (4) The Fourth Message

[0156] The fourth information is used for cell residence or access. Optionally, the second information is the complete MIB or the information in the MIB other than the second information. In one possible implementation, the fourth information may include one or more of the following: system frame number, SIB1 subcarrier spacing configuration, SSB subcarrier offset, DMRS symbol position, SIB1 search space and control resource set, and half-frame indication. That is, the third information may be other information in the MIB carried by the PBCH other than the third information.

[0157] In another possible implementation, the fourth information may include, in addition to the above information, one or more of the following: a cell blocking flag and an intra-frequency reselection flag. That is, the fourth information may include the MIB carried by the PBCH.

[0158] (5) Fifth Information

[0159] In an embodiment of the present application, the first information may be carried in the fifth information. In addition to the first information, the fifth information may also include configuration information of the first signal, where the configuration information of the first signal is used to indicate resources of the first signal.

[0160] (6) Resources

[0161] The resources in this application may be one or more of time domain resources, frequency domain resources, code domain resources, and power domain resources. For example, the resources of the first signal may include one or more of: the time domain resources of the first signal, the frequency domain resources of the first signal, the code domain resources of the first signal, the power of the first signal, etc. In one possible manner, the code domain resource may be a sequence.

[0162] The present application will be further described in detail below in conjunction with the accompanying drawings. The specific operation method in the method embodiment can also be applied to the device embodiment or the system embodiment.

[0163] Based on the above Figure 1 The network system architecture shown and the above-mentioned related technical introductions, Figure 5 A flow chart of a communication method provided in an embodiment of the present application is exemplified. Figure 5 The scheme in the present invention is introduced by taking the interactive execution of the network device and the terminal device as an example. Specifically, the process is described by taking the network device as a network device and the terminal device as a terminal device as an example. The relevant description of the network device and the terminal device can be found in the above content and will not be repeated here.

[0164] like Figure 5 As shown, the communication method may include the following steps:

[0165] Step 501: A network device sends first information in a first cell. Correspondingly, a terminal device receives the first information in the first cell.

[0166] Optionally, before step 501, the following steps may also be included: the network device configures the first information.

[0167] The sending mode of the first information may include one of sending mode 1-1, sending mode 1-2, sending mode 1-3, sending mode 1-4 and sending mode 1-5. It can be understood that these sending modes are only possible examples, and the embodiments of the present application do not limit this. These sending modes are described below respectively.

[0168] Sending method 1-1:

[0169] In step 501, the network device sends first indication information on the second resource of the first cell, the first indication information indicating the first resource; the network device sends first information on the first resource. Correspondingly, the terminal device receives the first indication information on the second resource of the first cell, and receives the first information on the first resource of the first cell.

[0170] Optionally, the first information and the resource indication of the first information may be sent through two independent channels. For example, the two independent channels are the first channel and the second channel, and the first channel and the second channel are different. The network device may send a PBCH payload on the second channel, and the PBCH also carries the first indication information to indicate the resource of the first information, such as at least one of the resources in the time domain, frequency domain, code domain, and power domain; the network device sends the first information on the first channel. Correspondingly, after the terminal device receives the first indication information carried by the PBCH on the second channel, it receives the first information on the first channel.

[0171] Figure 6 Schematic diagram showing several ways of sending the first information. For ease of description, Figure 6 In the figure, “SS” represents the synchronization signal in the current protocol, “PBCH” represents the information carried by the PBCH in the current protocol, and “PBCH+” represents the first information.

[0172] like Figure 6 (a) in the figure exemplifies sending method 1-1. In energy-saving mode, the second channel carries the PBCH payload in the current protocol and carries the resource indication information of PBCH+ (i.e., the first indication information). Optionally, the resource indication information of PBCH+ can reuse the pdcch-ConfigSIB1 field in PBCH, or use the reserved bits in PBCH, or can also carry the resource indication information of PBCH+ through newly added bits. The first channel carries PBCH+; the terminal device receives the PSS by blind detection, and then receives the SSS and PBCH, obtains the resources of PBCH+ according to the first indication information contained in the PBCH, and receives PBCH+ on the corresponding resources. In normal mode, the network device can send SS and PBCH in the manner defined by the current protocol; the terminal device obtains the resource indication of SIB1 carried in the PBCH, and receives SIB1 according to the resource indication.

[0173] By adopting the above-mentioned sending mode 1-1, the resource position of the first information carried on the first channel relative to the second channel can be flexibly set according to needs or network conditions.

[0174] As a possible alternative, the network device may send a synchronization signal on the second channel, and implicitly indicate the resource of the first information through the sequence of the synchronization signal. It is understood that the above two methods may be used in combination, that is, the network device may indicate the resource of the first information through the first indication information, and may also implicitly indicate the resource of the first information through the sequence of the synchronization signal.

[0175] Sending method 1-2:

[0176] In step 501, the network device sends a PBCH on a second resource of a first cell and sends a first message on a first resource, wherein the relative position of the first resource and the second resource is preset or preconfigured. Correspondingly, the terminal device receives the PBCH on the second resource of the first cell and receives the first message on the first resource of the first cell.

[0177] Optionally, the PBCH payload and the first information may be sent through two independent channels. Taking the two independent channels as an example, namely the first channel and the second channel, the first channel and the second channel are different, wherein the second channel is used to carry the PBCH payload, and the first channel is used to carry the first information. The relative position between the resources of the first channel (i.e., the first resources) and the resources of the second channel (i.e., the second resources) may be preset or preconfigured, and the terminal device may determine the resource position of the first information based on the resource position of the PBCH payload, wherein the resource position of the PBCH payload may be determined by the synchronization signal resource position, or may be determined by blind detection of the PBCH.

[0178] As a possible alternative, the network device may send a synchronization signal on the second channel and implicitly indicate the resource of the first information through a sequence of the synchronization signal.

[0179] like Figure 6 (b) in the figure exemplifies transmission method 1-2. In energy-saving mode, the second channel carries the PBCH payload in the current protocol, and the first channel carries PBCH+. The relative positions of the time-frequency resources of the first channel and the second channel are fixed. For example, the offset of the time-frequency resources where PBCH+ is located relative to the time-frequency resources where PBCH is located is a fixed value; the terminal device receives the PSS by blind detection, and then receives the SSS and PBCH, determines the resource position of PBCH+ according to the resource position of PBCH, and receives PBCH+ at the resource position. In normal mode, the network device can send PBCH in the manner defined by the current protocol; the terminal device obtains the resource indication of SIB1 carried in PBCH, and receives SIB1 according to the resource indication.

[0180] In the above-mentioned sending mode 1-2, since the relative position between the resources of the first channel and the resources of the second channel is fixed, compared with the sending mode 1-1, the sending mode 1-2 can omit the sending of the first indication information, thereby saving network overhead.

[0181] Sending method 1-3:

[0182] In step 501, the network device sends first information and a PBCH payload on a first channel of a first cell; after the first cell is awakened, the network device no longer sends the first information on the first channel of the first cell, and sends second information on another channel, where the second information may be, for example, SIB1.

[0183] Optionally, in this sending method, in energy-saving mode, the PBCH payload and the first information are sent through one channel. Taking the first channel as an example, when the first cell is in energy-saving mode, the network device can send the PBCH payload and the first information on the first channel of the first cell. When the first cell is in normal mode, the network device can send the PBCH payload on the second channel of the first cell and send SIB1 on another channel (such as the third channel); accordingly, the terminal device can receive the PBCH payload on the second channel and receive SIB1 on the third channel. Optionally, the network device can implicitly indicate the resource of the first information through a synchronization signal sequence.

[0184] like Figure 6 (c) in the figure shows an example of sending methods 1-3. In energy-saving mode, the first channel carries the PBCH in the current protocol and carries PBCH+; the terminal device receives the PSS by blind detection, and then receives the SSS and PBCH, and receives PBCH+ on the same channel. In normal mode, the network device can send PBCH in the manner defined by the current protocol; the terminal device obtains the resource indication of SIB1 carried in the PBCH, and receives SIB1 according to the resource indication. In this way, the terminal device only needs to receive the PBCH payload and the first information on one channel, thereby reducing the reception complexity.

[0185] Sending method 1-4:

[0186] In step 501, the network device sends the first information and PBCH on the first resource of the first cell. After the first cell is awakened, the network device still sends the first information and PBCH on the first resource of the first cell, that is, for the first cell, the network device sends the first information and PBCH in both the energy saving mode and the normal mode.

[0187] Optionally, the first channel occupies the first resource, that is, in the energy-saving mode and the normal model, the PBCH load and the first information can be sent through one channel.

[0188] like Figure 6(d) in the figure shows an example of transmission mode 1-4. In energy-saving mode, the first channel carries the PBCH in the current protocol and carries PBCH+; the terminal device receives the PSS by blind detection, then receives the SSS and PBCH, and receives PBCH+ on the same channel. In normal mode, the network device can send PBCH and PBCH+ on one channel; the terminal device obtains the resource indication of SIB1 carried in PBCH, and receives SIB1 according to the resource indication.

[0189] In the above-mentioned sending methods 1-4, since the first information and the PBCH payload are sent in both the energy-saving mode and the normal mode, the complexity of blind detection of the terminal device can be reduced.

[0190] Sending methods 1-5:

[0191] In step 501, the network device sends first information and fourth indication information on the first resource of the first cell, and the fourth indication information is used to indicate whether the first information is carried on the first resource, and the first resource can also carry PBCH; accordingly, the terminal device receives the fourth indication information on the first resource of the first cell, and receives the first information or PBCH according to the fourth indication information.

[0192] Optionally, the first channel occupies the first resource, that is, in energy-saving mode, the first information and the fourth indication information can be sent through one channel; accordingly, the terminal device receives the fourth indication information on the first channel, and determines whether the first information is carried on the first channel according to the fourth indication information, so the first information can be obtained by parsing the received information. When the first cell is in normal mode, the network device sends PBCH on the channel. Optionally, the network device can implicitly indicate the resource of the first information through a synchronization signal sequence.

[0193] In one possible manner, the first information can be carried through the messageClassExtension field in the BCCH-BCH-Message, and the fourth indication information can be indicated through the asn code. For example, the value of the fourth indication information is 1, which means that the first channel carries the first information, and the value of the fourth indication information is 0, which means that the first channel sends the PBCH defined in the current protocol.

[0194] In another possible manner, the reserved bits in the PBCH can be used to carry the fourth indication information. For example, the value of the fourth indication information is 1, which represents that the first channel carries the first information. The value of the fourth indication information is 0, which represents that the first channel sends the PBCH defined in the current protocol. Optionally, other configuration information of the PBCH (such as cellBarred) can be used to ensure that the original terminal device (legacy UE) will not recognize the fourth indication information and the first information.

[0195] The "energy-saving mode" in the above-mentioned sending modes can be replaced by "the situation where the transmission capacity is limited", and the "normal mode" can be replaced by "the situation where the transmission capacity is not limited" or "the situation where the transmission capacity is released". In other words, the above-mentioned sending modes can also be applied to scenarios that do not distinguish between "energy-saving mode" and "normal mode".

[0196] Step 502: The terminal device determines to reside in or access the first cell based on the first information.

[0197] In this step, after receiving the first information, the terminal device can determine whether the first cell allows the terminal device to reside or access based on the first information, or determine whether the terminal device is suitable for or able to access the first cell based on the first information. If so, it can decide to reside or access the first cell.

[0198] Specifically, the first information is used to identify whether the first cell is allowed to reside or access. The payload of the first information is smaller than the SIB or MIB.

[0199] In an optional manner, the first information includes cell selection information or cell access-related information.

[0200] For example, the first information includes one or more of the following: cell IP multimedia subsystem IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information;

[0201] When the first information includes the cell IMS emergency call capability information, the terminal device determines whether the first cell is allowed to be camped on or accessed according to the first information, which may include the following situations:

[0202] Case 1: the cell IMS emergency call capability information in the first information does not include ims-EmergencySupport, indicating that the network in the first cell does not support the IMS emergency call of the terminal device in the limited service mode; accordingly, the terminal device is determined to be unsuitable for staying in or accessing the first cell.

[0203] Case 2: the cell IMS emergency call capability information eCallOverIMS-Support in the first information indicates that the first cell does not support IMS emergency calls; accordingly, the terminal device may determine that the terminal device is not suitable for residing in or accessing the first cell.

[0204] Optionally, if the first information includes cell selection information, such as one or more of q-RxLevMin, q-RxLevMinOffset, q-RxLevMinSUL, q-QualMin, q-QualMinOffset, and connEstFailOffset; accordingly, if the RSRP of the reference signal received by the terminal device in the first cell does not meet the minimum reference signal received power requirement indicated by Srxlev, Squal, etc., it is determined that it cannot reside in or access the first cell.

[0205] Optionally, if the first information includes cell access related information, such as a PLMN number; accordingly, the terminal determines that the communication operator to which the PLMN number belongs is not a communication operator supported by the terminal device, then the terminal device determines that it cannot reside in or access the first cell.

[0206] It is understandable that the above only lists several possible situations. The first information may also include other parameters, and accordingly, the terminal device may also determine whether the first cell is allowed to reside or access according to the other parameters.

[0207] Step 503: The terminal device sends a first signal in the first cell, where the first signal is used to request the network device to send second information.

[0208] The first signal in the present application is used to request the network device to send the second information, and it can also be understood that the first signal is used to wake up the first cell, or the first signal is used to switch the first cell from energy-saving mode to normal mode, or the first signal is used to enable the network device to release the transmission capacity restriction on the first cell. In an embodiment of the present application, the terminal device sends the first signal to the first cell when it determines that the first cell is in energy-saving mode or the transmission capacity of the first cell is limited, and determines to reside in or access the first cell. For example, the terminal device can use one or more of the following methods to determine whether the first cell is in energy-saving mode or the transmission capacity of the first cell is limited:

[0209] (1) Instruction method 1

[0210] The network device sends indication information to the terminal, indicating whether the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited through the indication information. Optionally, the indication method can be applicable to any scenario under the aforementioned first information sending method.

[0211] For example, in Figure 6 The sending method 1-1 shown in (a) or Figure 6In the transmission mode 1-2 shown in (b), the network device can send the second indication information on the second channel of the first cell. Correspondingly, after the terminal device receives the second indication information on the second channel of the first cell, it determines whether the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited according to the second indication information. Optionally, the second indication information can reuse the pdcch-ConfigSIB1 field in the PBCH, or use the reserved bits in the PBCH, or can also carry the second indication information through newly added bits.

[0212] For example, in Figure 6 In the sending mode 1-4 shown in (d), the network device indicates whether the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited through the third indication information. For example, the network device can send the third indication information on the first channel of the first cell to indicate that the first cell is in energy-saving mode or the transmission capacity of the first cell is limited; accordingly, the terminal device receives the third indication information on the first channel, and determines that the first cell is in energy-saving mode or the transmission capacity of the first cell is limited according to the third indication information. Optionally, the third indication information sent in energy-saving mode or with limited transmission capacity has a different value from the third indication information sent in normal mode or with unlimited transmission capacity. For example, in energy-saving mode or with limited transmission capacity, the value of the third indication information is a first value (such as 1), and in normal mode or with unlimited transmission capacity, the value of the third indication information is a second value (such as 0). Optionally, the third indication information can be carried in the pdcch-ConfigSIB1 field in the PBCH, or by using reserved bits, or by newly added bits.

[0213] For another example, in transmission mode 1-5, the network device indicates whether the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited through the fifth indication information. For example, the network device can send the fifth indication information on the first channel of the first cell to indicate that the first cell is in energy-saving mode or has limited transmission capacity; accordingly, the terminal device receives the fifth indication information on the first channel, and determines that the first cell is in energy-saving mode or has limited transmission capacity according to the fifth indication information. Optionally, the fifth indication information sent in energy-saving mode or with limited transmission capacity is different from the fifth indication information sent in normal mode or with unlimited transmission capacity. For example, in energy-saving mode or with limited transmission capacity, the value of the fifth indication information is the first value (such as 1), and in normal mode or with unlimited transmission capacity, the value of the fifth indication information is the second value (such as 0). Optionally, the fifth indication information can be carried in the pdcch-ConfigSIB1 field in the PBCH, or by using reserved bits, or by newly added bits.

[0214] (2) Instruction method 2

[0215] The network device implicitly indicates through the sequence of the synchronization signal, and accordingly, the terminal device determines whether the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited according to the sequence of the synchronization signal. For example, the sequence of the synchronization signal includes a first sequence and a second sequence. When the first cell is in energy-saving mode or has limited transmission capacity, the network device generates a synchronization signal based on the first sequence and sends it to the first cell. When the first cell is in normal mode or has unlimited transmission capacity, the network device generates a synchronization signal based on the second sequence and sends it to the first cell. The terminal device can determine whether the first cell is in energy-saving mode or has limited transmission capacity, or in normal mode or has unlimited transmission capacity according to whether the sequence of the synchronization signal is the first sequence or the second sequence. This method can save signaling overhead and reduce power consumption.

[0216] Optionally, the above-mentioned indication method 2 can be applicable to any scenario under the above-mentioned first information sending method.

[0217] (3) Instruction method 3

[0218] The terminal device determines whether the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited according to the result of blind detection of the signal received in the first cell. For example, if the terminal device performs blind detection on the signal received in the first cell to obtain the first information, it can be determined that the first cell is in energy-saving mode or the transmission capacity is limited. It can be understood that the above-mentioned multiple methods can also be used in combination to indicate whether the first cell is in energy-saving mode or whether the transmission capacity is limited.

[0219] Optionally, the above-mentioned indication method 3 can be applicable to any of the above-mentioned methods for sending the first information.

[0220] (4) Instruction method 4

[0221] Implicit indication is made through the resources used by the demodulation reference signal. In the embodiment of the present application, the network device may also send a demodulation reference signal in the first cell, and may indicate whether the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited by the resources used by the demodulation reference signal. For example, when the first cell is in energy-saving mode or has limited transmission capacity, the network device uses resource A to send a demodulation reference signal, and when the first cell is in normal mode or has unlimited transmission capacity, the network device uses resource B to send a demodulation reference signal. Accordingly, the terminal device may determine that the first cell is in energy-saving mode or has limited transmission capacity according to the resource A used by the demodulation reference signal, and determine that the first cell is in normal mode or has unlimited transmission capacity according to the resource B used by the demodulation reference signal. Optionally, the resources of the demodulation reference signal may include one or more of the following: a sequence of a demodulation reference signal, a time domain resource of a demodulation reference signal, a frequency domain resource of a demodulation reference signal, a time-frequency resource of a demodulation reference signal (such as a pattern of a demodulation reference signal), etc., and the embodiment of the present application does not limit this.

[0222] Optionally, the above indication method 4 can be applicable to any scenario under the above-mentioned first information sending method.

[0223] (5) Instruction method 5

[0224] Indication method 5 can be applied to the scenario under sending method 1-1, and the first indication information in sending method 1-1 indicates that the first cell is in energy-saving mode or has limited transmission capacity. That is to say, the first indication information can indicate the resources of the first information, and can also indicate that the first cell is in energy-saving mode or has limited transmission capacity.

[0225] (6) Instruction method 6

[0226] Indication method 6 can be applied to the scenario under sending method 1-5, and the fourth indication information in sending method 1-5 indicates whether the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited. That is to say, the fourth indication information can indicate whether the first information is carried on the first channel, and whether the first cell is in energy-saving mode or whether the transmission capacity is limited.

[0227] In an embodiment of the present application, the terminal device sends the first signal on the corresponding resource according to the configuration information of the first signal. The configuration information of the first signal can be indicated to the terminal device in an explicit indication manner or an implicit indication manner.

[0228] In an implementation method of indicating the configuration information of the first signal by explicit indication, the first information is carried in the fifth information, and the fifth information may also include the configuration information of the first signal. The content and sending method of the configuration information of the first signal can be referred to below Fig.11 Relevant description in the process shown. Optionally, the network device may also send reception indication information to indicate whether the fifth information contains the configuration information of the first signal. If the reception indication information indicates that the fifth information includes the configuration information of the first signal, the terminal device may send the first signal according to the configuration information of the first signal included in the fifth information; if the reception indication information indicates that the fifth information does not include the configuration information of the first signal, the terminal device may use the configuration information of the first signal configured by the system by default, or use the configuration information of the first signal acquired before, to send the first signal to the network device.

[0229] In an implementation method of indicating the configuration information of the first signal by implicit indication, the sequence of the synchronization signal is associated with the configuration information of the first signal, that is, the configuration information of the first signal is implicitly indicated by the sequence of the synchronization signal. For example, the correspondence between the sequence of the synchronization signal and the configuration information of the first signal can be preset, and the terminal device can obtain (or determine) the configuration information of the first signal associated with the sequence of the synchronization signal received in the first cell. Thereby saving the overhead of the first signal configuration information.

[0230] Furthermore, Figure 5 The process shown may also include the following steps: after receiving the first signal sent by the terminal device, the network device sends the second information in the first cell. Correspondingly, the terminal device receives the second information in the first cell.

[0231] After receiving the first signal, the network device switches the first cell from the energy-saving mode to the normal mode, or releases the transmission capacity restriction of the first cell, and sends the second information in the first cell. Furthermore, SSB can also be sent in the first cell.

[0232] In a possible implementation, the second information may be SIB1, and the implementation may be applied to a scenario where the first information is sent in transmission mode 1-1, transmission mode 1-2, transmission mode 1-3 or transmission mode 1-5. Figure 7 As shown in (a), when the first cell is in energy-saving mode or the transmission capacity of the first cell is limited, the network device periodically sends the first information (i.e., the simplified version of SIB1) in the first cell; after receiving the first signal sent by the terminal device, the network device periodically sends SIB1 in the first cell. Before and after the terminal device sends the first signal, the network device also periodically sends SS and PBCH (not shown in the figure), and the terminal device can obtain the resource indication of SIB1 according to the MIB carried in the PBCH, and receive SIB1 according to the resource indication.

[0233] In another possible implementation, the second information may be other information in SIB1 except the first information. This implementation may be applied to the scenario where the first information is sent in sending mode 1-4. Figure 7 As shown in (b), when the first cell is in energy-saving mode or has limited transmission capacity, the network device periodically sends the first information (i.e., simplified version of SIB1) in the first cell; after receiving the first signal sent by the terminal device, the network device sends the second information (i.e., information in SIB other than the first information) in the first cell, and then the network device periodically sends the first information. Before and after the terminal device sends the first signal, the network device also periodically sends SS and PBCH (not shown in the figure), and the terminal device can obtain the resource indication of the second information according to the MIB carried in the PBCH, and receive the second information according to the resource indication.

[0234] The terminal device receives the second information in the first cell and can initiate a random access process in the first cell.

[0235] The embodiments of the present application do not limit the specific implementation method of random access. For example, the random access method specified in the current protocol can be used to perform the random access process. For example, the terminal device sends a random access preamble code to the network device in the first cell.

[0236] In a possible implementation, after receiving the second information in the first cell, the terminal device completes the residency in the first cell, receives the paging message based on the second information configuration, and can send a preamble on a random access channel (RACH). The time domain, frequency domain, code domain, power domain and other configurations of the preamble can be obtained from the second information received by the terminal device. The terminal device and the network device then complete random access after two or four interactions.

[0237] Optionally, the terminal device may select a RACH resource corresponding to a certain SSB beam to send a preamble uplink. For example, the terminal device may select a beam corresponding to a received SSB and send a preamble on the RACH resource corresponding to the beam, thereby improving the access success rate.

[0238] In a possible implementation, in step 501, the network device may send the first synchronization signal block multiple times in a time division + space division manner within a cycle, and further, may send it on different beams, that is, the first synchronization signal block may be sent in the form of a synchronization signal burst set. The first synchronization signal block may include a synchronization signal, a PBCH, and may further include the first information. Exemplarily, in Figure 6 In the transmission mode 1-1 shown in (a), the first synchronization signal block may include a synchronization signal and a PBCH, or include a synchronization signal, a PBCH and a PBCH+; Figure 6 Sending method 1-2 shown in (b) or Figure 6 The sending method 1-3 shown in (c) or Figure 6 In the transmission mode 1-4 shown in (d), the first synchronization signal block may include a synchronization signal, PBCH and PBCH+. Figure 3 In the SSB multi-beam schematic diagram shown, the first synchronization signal block sent on different beams in a synchronization signal burst period can be identified by an index, and the index can also identify the beam of the first synchronization signal block, that is, there is a corresponding relationship between the index of the first synchronization signal block and the beam of the first synchronization signal block. Optionally, the index of the first synchronization signal block can be carried on a broadcast channel (BCCH), and the BCCH can be mapped to the PBCH of the physical layer, that is, the index can be carried in the PBCH.

[0239] Optionally, in step 503, the resource of the first signal may be associated with the index of the first synchronization signal block. Accordingly, after receiving the first signal sent by the terminal device, the network device may determine the index of the first synchronization signal block corresponding to the resource according to the resource of the first signal, and send the second information on the beam or beam set corresponding to the index, and send the first information in other beam directions, thereby realizing beam-level cell wake-up, achieving more flexible cell energy saving, and reducing network energy consumption.

[0240] Above Figure 5 In the implementation shown, in energy-saving mode or when transmission capacity is limited, the control information sent by the network device in the first cell is reduced compared to the control information sent in normal mode or when transmission capacity is not limited, thereby reducing the signal load and further reducing the power consumption of the network device.

[0241] Based on the above Figure 1 The network system architecture shown and the above-mentioned related technical introductions, Figure 8 A possible flow chart of a communication method provided in an embodiment of the present application is exemplified. Figure 8 The scheme in the present invention is introduced by taking the interactive execution of the network device and the terminal device as an example. Specifically, the process is described by taking the network device as a network device and the terminal device as a terminal device as an example. The relevant description of the network device and the terminal device can be found in the above content and will not be repeated here.

[0242] like Figure 8 As shown, the communication method may include the following steps:

[0243] Step 801: The network device sends the first information and the third information in the first cell. Correspondingly, the terminal device receives the first information and the third information in the first cell.

[0244] Optionally, before step 801, the following steps may also be included: the network device configures the first information and the third information.

[0245] Optionally, the network device may also send a synchronization signal in the first cell. Optionally, the synchronization signal may use a sequence defined by a current protocol, which is not limited in the embodiment of the present application.

[0246] Optionally, the synchronization signal, the first information and the third information may all be carried in one piece of information, for example, carried in a first synchronization signal or a discovery reference signal (DRS).

[0247] In the embodiment of the present application, the sending mode of the first information and the third information may include one of sending mode 2-1, sending mode 2-2 and sending mode 2-3. These sending modes are described below. It can be understood that these sending modes are only possible examples, and the embodiment of the present application does not limit this. These sending modes are described below.

[0248] Sending method 2-1:

[0249] In step 801, the network device sends a resource indication on the second resource of the first cell, and the resource indication may indicate the first resource of the first cell, and the network device sends the first information and the third information on the first resource of the first cell; correspondingly, in step 802, the terminal device receives the resource indication information on the second resource of the first cell, and receives the first information and the third information on the first resource of the first cell according to the resource indication information.

[0250] Optionally, the first information and the third information may be sent through two independent channels. Taking the first channel and the second channel as an example, the first channel and the second channel are different, and the network device may send a synchronization signal and resource indication information on the second channel, and the resource indication information indicates the first channel, and the network device sends the first information and the third information on the first channel; correspondingly, the terminal device may receive the synchronization signal and the resource indication information on the second channel, and receive the first information and the third information on the first channel.

[0251] Fig. 9 Schematic diagram showing several ways of sending the first information and the third information. For ease of description, Fig. 9In the above, "newSS" indicates the synchronization signal in energy-saving mode or when the transmission capacity is limited, "SS" indicates the synchronization signal in the current protocol, "newPBCH" indicates the information carried by the broadcast channel (such as BCCH) in energy-saving mode or when the transmission capacity is limited, which may specifically include the first information and the third information; "PBCH" indicates the information carried by the PBCH in the current protocol. "newPBCH1" indicates the above resource indication information, and "newPBCH2" indicates the information carried by the broadcast channel in energy-saving mode or when the transmission capacity is limited, which may specifically include the first information and the third information.

[0252] like Fig. 9 (a) in the figure exemplifies the sending method 2-1. In the energy-saving mode, the second channel carries the synchronization signal newSS and the resource indication information newPBCH1. NewPBCH1 can indicate the resource location of newPBCH2 (newPBCH2 is located in the first channel), and the first channel carries newPBCH2. Optionally, the relative position of the resources of newSS and the resources of newPBCH1 is preset or preconfigured. In one possible implementation, newSS is composed of PSS and SSS. The terminal device receives PSS by blind detection, and then receives SSS, and performs blind detection on the resources where newPBCH1 is located. If it is determined that the first cell is in energy-saving mode or the transmission capacity is limited, newPBCH1 is demodulated to obtain the resource indication information carried therein, and newPBCH2 is demodulated according to the resource indication information. In normal mode or when the transmission capacity is not limited, the network device can send SS and PBCH in the manner defined by the current protocol. The terminal device can obtain the resource indication of SIB1 according to the MIB carried in PBCH, and receive SIB1 according to the resource indication. Among them, the first synchronization signal block may include newSS and newPBCH1, and may further include newPBCH2.

[0253] The newSS and newPBCH2 are carried in the first synchronization information block, and the resource indication information newPBCH1 may also indicate the index of the first synchronization signal block. In one example, the resource indication information includes the index of the first synchronization signal block and indication information for indicating the resource location of newPBCH2.

[0254] It should be noted that Fig. 9 The positions of newSS and newPBCH or newsSS and newPBCH1 are just examples. In other cases, the resource positions of newSS and newPBCH or newsSS and newPBCH1 may be intertwined, similar to the resource positions of SS and PBCH included in SSB in the current protocol.

[0255] By adopting the above-mentioned sending mode 2-1, the resource position of the synchronization signal carried on the first channel relative to the first information and / or the third information can be flexibly set according to needs or network conditions.

[0256] Sending method 2-2:

[0257] In step 801, the network device sends a synchronization signal, first information, and third information on a first resource of a first cell. Optionally, the relative position between the synchronization signal and the first information is preset or preconfigured, or the relative position between the synchronization signal and the third information is preset or preconfigured, or the relative position between the synchronization signal and the first information and the second information is preset or preconfigured. Optionally, the network device may implicitly indicate the resources of the first information and / or the third information through a synchronization signal sequence. Accordingly, in step 802, the terminal device receives the synchronization signal, the first information, and the third information on the first resource of the first cell.

[0258] Optionally, the synchronization signal, the first information, and the third information may be sent through one channel. Taking the first channel as an example, the network device sends the synchronization signal and the first information and the third information on the first channel of the first cell. Correspondingly, the terminal device receives the synchronization signal, the first information, and the third information on the first channel. Optionally, the network device may also send an index of the first synchronization signal block on the first channel. Optionally, the index of the first synchronization signal block may be included in the third information.

[0259] like Fig. 9 (b) in the figure exemplifies sending method 2-1. In energy-saving mode or when transmission capacity is limited, the first channel carries the synchronization signal newSS and newPBCH. The relative position of the resources of newPBCH and newSS is given, or the resources of newPBCH are implicitly indicated by newSS. Optionally, newPBCH may also include an index of the first synchronization signal block. The terminal device receives the PSS by blind detection, and then receives the SSS and newPBCH, and demodulates the newPBCH to obtain the first information and the third information. In normal mode or when transmission capacity is not limited, the network device can send SS and PBCH in the manner defined by the current protocol, and the terminal device can obtain the resource indication of SIB1 based on the MIB carried in the PBCH, and receive SIB1 based on the resource indication.

[0260] In the above-mentioned sending mode 2-2, since the relative position between the resources of the synchronization signal newSS and the resources of the newPBCH is fixed, compared with the sending mode 2-1, the sending mode 2-2 can omit the sending of the indication information, thereby saving network overhead.

[0261] Sending method 2-3:

[0262] In step 801, the network device sends the first information, the third information and the sixth indication information on the first resource of the first cell, and the sixth indication information is used to indicate whether the first information and the third information are carried on the first resource; correspondingly, in step 802, the terminal device receives the sixth indication information on the first resource of the first cell, and receives the first information and the third information according to the sixth indication information. Optionally, the network device can implicitly indicate the resources of the first information and / or the third information through a sequence of synchronization signals.

[0263] Optionally, the first information, the third information, and the sixth indication information whose value is the first value (for example, the value is 1) can be sent through a channel to indicate that the first information and the third information are carried on the current channel; accordingly, the terminal device receives the sixth indication information on the first channel, and determines that the first information and the third information are carried on the first channel according to the sixth indication information, so the first information and the third information can be obtained by parsing the received information. When the first cell is in normal mode, the network device sends SS and PBCH and the sixth indication information whose value is the second value (for example, the value is 0) on the first channel to indicate that the first information and the third information are not carried on the first channel.

[0264] In one possible manner, the first information can be carried through the messageClassExtension field in the BCCH-BCH-Message, and the sixth indication information can be indicated through asn coding. For example, the value of the sixth indication information is 1, which means that the first channel carries the first information and the third information, and the value of the sixth indication information is 0, which means that the first channel sends the PBCH and SIB1 defined in the current protocol.

[0265] In another possible method, the reserved bits in the PBCH can be used to carry the sixth indication information, and other configuration information in the PBCH (such as cellBarred) can be used to ensure that the original terminal equipment (legacy UE) will not recognize the sixth indication information, the first information and the third information.

[0266] Step 802: The terminal device determines to reside in or access the first cell based on the first information and the third information.

[0267] In this step, after the terminal device receives the first information and the third information, it can determine whether the first cell allows the terminal device to reside or access based on the first information and the third information, or determine whether the terminal device is suitable for or able to access the first cell based on the first information and the third information. If so, it can decide to reside or access the first cell.

[0268] Optionally, the implementation method of the terminal device determining whether the first cell is allowed to reside or access according to the first information can refer to Figure 5 The terminal device determines whether to allow resident or access according to the third party information, which may include the following situations:

[0269] Case 1: the "cell blocking flag" in the third information indicates that the terminal device is not allowed to reside in the first cell; accordingly, the terminal device determines that the terminal device cannot reside in the first cell.

[0270] Case 2: The "same-frequency reselection flag" in the third information indicates that same-frequency cell access is not allowed; accordingly, the terminal device determines that the terminal device cannot access the first cell.

[0271] It is understandable that the above only lists several possible situations. The first information and / or the third information may also include other parameters, and accordingly, the terminal device may also determine whether the terminal device is suitable or able to reside in or access the first cell according to the other parameters.

[0272] Step 803: The terminal device sends a first signal in the first cell, where the first signal is used to request the network device to send second information and fourth information.

[0273] It can be understood that the first signal is used to wake up the first cell, or in other words, the first signal is used to switch the first cell from energy-saving mode to normal mode, or in other words, the first signal is used to enable the network device to relax the transmission capacity restriction on the first cell. In an embodiment of the present application, the terminal device sends the first signal to the first cell when it determines that the first cell is in energy-saving mode or the transmission capacity of the first cell is limited, and determines to reside in or access the first cell. The terminal device can use a variety of methods to determine whether the first cell is in energy-saving mode or the transmission capacity of the first cell is limited, and then determine whether to send the first signal in the first cell. For example, the terminal device can use one or more of the following methods to determine whether the first cell is in energy-saving mode or the transmission capacity of the first cell is limited:

[0274] (1) Instruction method 1

[0275] The network device sends independent indication information to the terminal, indicating whether the first cell is in energy saving mode or whether the transmission capacity of the first cell is limited. Optionally, the indication method can be applicable to the scenarios of transmission method 2-1, transmission method 2-2 and transmission method 2-3.

[0276] (2) Instruction method 2

[0277] The network device implicitly indicates through the sequence of synchronization signals, and accordingly, the terminal device determines whether the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited according to the sequence of synchronization signals. This method can save signaling overhead and reduce power consumption. Optionally, the above energy-saving mode indication method 2 can be applicable to the scenarios of the above-mentioned transmission method 2-1, transmission method 2-2 and transmission method 2-3.

[0278] (3) Instruction method 3

[0279] The terminal device determines whether the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited based on the result of blind detection of the signal received in the first cell, if the terminal device performs blind detection on the signal received in the first cell to obtain the first information and the third information. Optionally, the above indication mode 3 can be applicable to the scenarios of transmission mode 2-1, transmission mode 2-2 and transmission mode 2-3.

[0280] Taking the above-mentioned sending mode 2-1 as an example, after the terminal device receives the synchronization signal newSS, it performs a blind check at the resource location where PBCH and newPBCH1 are located. If newPBCH1 is obtained through the blind check, it indicates that the first cell is in energy-saving mode or the transmission capacity of the first cell is limited. Otherwise, it indicates that the first cell is in normal mode or the transmission capacity of the first cell is not limited. Taking the above-mentioned sending mode 2-2 as an example, after the terminal device receives the synchronization signal newSS, it performs a blind check at the resource location where PBCH and newPBCH are located. If newPBCH is obtained through the blind check, it indicates that the first cell is in energy-saving mode or the transmission capacity of the first cell is limited. Otherwise, it indicates that the first cell is in normal mode or the transmission capacity of the first cell is not limited.

[0281] (4) Instruction method 4

[0282] Implicit indication is made through the resources used by the demodulation reference signal. In an embodiment of the present application, the network device may also send a demodulation reference signal in the first cell, and may indicate whether the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited through the resources used by the demodulation reference signal. Optionally, the above-mentioned indication method 3 may be applicable to the scenarios of transmission method 2-1, transmission method 2-2 and transmission method 2-3.

[0283] (5) Instruction method 5

[0284] Indication method 5 can be applied to the scenario under sending method 2-3, and the sixth indication information in sending method 2-3 indicates that the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited. That is to say, the sixth indication information can indicate whether the first information and the third information are carried on the first resource, and can also indicate that the first cell is in energy-saving mode or whether the transmission capacity of the first cell is limited.

[0285] (6) Instruction method 6

[0286] Indication mode 6 can be applied to the scenarios under transmission modes 2-3. In energy-saving mode or when the transmission capacity is limited, the value of the seventh indication information is the first value (for example, 1). In normal mode or when the transmission capacity of the first cell is not limited, the value of the seventh indication information is the second value (for example, 0). Optionally, the seventh indication information can be carried in the pdcch-ConfigSIB1 field in the newPBCH, or by using reserved bits or by newly added bits.

[0287] In the embodiment of the present application, the terminal device sends the first signal on the corresponding resource according to the configuration information of the first signal. The configuration information of the first signal can be indicated to the terminal device in an explicit indication manner or an implicit indication manner. For specific implementation methods, please refer to Figure 5 Relevant content in the process shown.

[0288] Furthermore, Figure 8 The process shown may also include the following steps: after receiving the first signal sent by the terminal device, the network device sends the second information and the fourth information in the first cell. Correspondingly, the terminal device receives the second information and the fourth information in the first cell.

[0289] After receiving the first signal, the network device switches the first cell from energy-saving mode to normal mode, or releases the transmission capacity restriction of the first cell, and sends the second information and the fourth information in the first cell. Furthermore, a synchronization signal may be sent in the first cell.

[0290] In a possible implementation, the fourth information may be the MIB carried by the PBCH. Fig.10 As shown in (a), when the first cell is in energy-saving mode or the transmission capacity of the first cell is limited, the network device periodically sends the first information (i.e., simplified version of SIB1) and the third information (i.e., simplified version of MIB) in the first cell; after receiving the first signal sent by the terminal device, the network device periodically sends the second information (such as SIB1) and the fourth information (MIB) in the first cell. The terminal device can obtain the resource indication of SIB1 according to MIB, and receive SIB1 according to the resource indication.

[0291] In another possible implementation, the fourth information may be other information in the MIB except the third information. Fig.10As shown in (b), when the first cell is in energy-saving mode or has limited transmission capacity, the network device periodically sends the first information (simplified version of SIB1) and the third information (simplified version of MIB) in the first cell; after receiving the first signal sent by the terminal device, the network device sends the second information (information in SIB other than the first information) and the fourth information (information in MIB other than the third information) in the first cell, and then the network device periodically sends the first information and the third information. The terminal device can obtain the resource indication of the second information according to the fourth information, and receive the second information according to the resource indication.

[0292] After the terminal device receives the second information and the fourth information in the first cell, it can initiate a random access process in the first cell, such as sending a random access preamble code in the first cell.

[0293] The embodiments of the present application do not limit the specific implementation method of random access. For example, the random access method specified in the current protocol can be used to perform the random access process.

[0294] Optionally, the terminal device may select a RACH resource corresponding to a certain SSB beam to send a preamble uplink. For example, the terminal device may select a beam corresponding to a received SSB and send a preamble on the RACH resource corresponding to the beam, thereby improving the access success rate.

[0295] In a possible implementation, in step 801, the network device may send the first synchronization signal block multiple times in a time division + space division manner within one cycle, and further, may send it on different beams, that is, the first synchronization signal block may be sent in the form of a synchronization signal burst set. The first synchronization signal block may include a synchronization signal, first information and third information, or include a synchronization signal, resource indication information, first information and third information, or include a synchronization signal and resource indication information. Similar to Figure 3 In the SSB multi-beam schematic diagram shown in FIG. 1 , the first synchronization signal block sent on different beams in a synchronization signal burst period can be identified by an index, and the index can also indicate the beam of the first synchronization signal block, that is, there is a corresponding relationship between the index of the first synchronization signal block and the beam of the first synchronization signal block. Fig. 9 For example, the first synchronization signal block includes newSS and newPBCH1, or the first synchronization signal includes newSS, newPBCH1 and newPBCH2, wherein the index of the first synchronization signal block can be carried in newPBCH1; newPBCH2 does not include the index of the first synchronization signal block. Fig. 9Taking (b) in the figure as an example, the first synchronization signal block includes newSS and newPBCH, and the index of the first synchronization signal block can be carried in the information carried by newPBCH in the first channel.

[0296] Optionally, in step 803, the resources of the first signal (such as time domain resources, frequency domain resources, signal sequence, etc.) can be associated with the index of the first synchronization signal block. Accordingly, after receiving the first signal sent by the terminal device, the network device can determine the index of the first synchronization signal block corresponding to the resource according to the resource of the first signal, and according to the beam or beam set corresponding to the index, send the second information and the fourth information in the normal mode on the beam or beam set, and send the first information and the third information in the energy-saving mode in other beam directions, so as to realize beam-level cell wake-up, realize more flexible cell energy saving, and reduce network energy consumption.

[0297] Above Figure 8 In the implementation shown, the control information sent in the first cell in energy-saving mode or when the transmission capacity is limited is reduced compared to the control information sent in normal mode or when the transmission capacity is not limited, so the signal load can be reduced, thereby reducing the power consumption of the network device. Figure 8 In the process shown in FIG. 1 , the third information sent in the energy-saving mode or when the transmission capacity is limited may be part of the information carried by the PBCH. Figure 5 In some of the embodiments shown, compared with sending PBCH in energy-saving mode or with limited transmission capacity, the sending of control information is further reduced, thereby further reducing network power consumption.

[0298] Based on the above Figure 1 The network system architecture shown and the above-mentioned related technical introductions, Fig.11 An exemplary flow chart of a possible flow chart of a communication method for realizing first signal resource configuration provided by an embodiment of the present application is shown. Through this flow chart, the configuration information of the first signal can be indicated to the terminal when the cell is in energy-saving mode or the transmission capacity is limited, so that the terminal device can wake up the cell by sending the first signal, and then initiate random access to the cell. Fig.11 The scheme in the present invention is introduced by taking the interactive execution of the network device and the terminal device as an example. Specifically, the process is described by taking the network device as a network device and the terminal device as a terminal device as an example. The relevant description of the network device and the terminal device can be found in the above content and will not be repeated here.

[0299] like Fig.11 As shown, the communication method may include the following steps:

[0300] Step 1101: A network device sends configuration information of a first signal.

[0301] In a possible implementation, the configuration information of the first signal may include one or more of the following (1) to (5):

[0302] (1) Time domain indication information

[0303] The time domain indication information of the first signal may indicate the time domain resource of the first signal. The time domain indication information indicates the time domain resource of the first signal, including two meanings: 1) the time domain indication information includes time domain resource related parameters (such as time slot position, etc.); 2) the time domain indication information is used to indicate time domain resource related parameters, for example, the time domain indication information may be an index, and different index values ​​indicate different time domain resources.

[0304] Optionally, the time domain indication information may indicate the time domain position (such as time slot position and / or symbol position, etc.) of the first signal, and the time domain position may be the time domain offset (such as time slot offset or symbol offset, etc.) of the time domain position of the first signal relative to the first synchronization signal block in the energy saving mode or under the condition of limited transmission capacity, or may be an absolute position in the time domain. Exemplarily, Fig.12 A time domain configuration of a first signal is shown. Fig.12 In the embodiment, the first signal may be sent periodically, and the time domain indication information of the first signal may indicate the time domain offset (such as time slot offset) of the first signal relative to the first synchronization signal block within the first signal period. The time domain indication information may also indicate the absolute time domain position of the first signal within the first signal period (such as the number of the time slot occupied by the first signal). Fig.11 For the relevant description of the first synchronization signal block involved in the shown process, please refer to the previous text.

[0305] Optionally, the time domain indication information may indicate the time domain period of the first signal. In the embodiment of the present application, the period of the first signal may be independent of the period of the first synchronization signal block in the energy saving mode or when the transmission capacity is limited, thereby increasing the flexibility of signal transmission.

[0306] It can be understood that the time domain indication information can also indicate the time domain position and time domain period of the first signal.

[0307] It can be understood that the time domain parameters listed above (such as time domain position and time domain period) are only examples, and the embodiments of the present application do not limit the time domain parameters of the first signal.

[0308] In a possible implementation, different time domain parameters of the first signal may be combined, and different parameter combinations may be identified using indexes (or numbers), such as a combination of a time domain position and a time domain period may be indicated by an index. In this case, the time domain indication information of the first signal may be an index of a parameter combination, used to indicate the time domain position and time domain period in the corresponding parameter combination. This approach may reduce the time domain indication overhead of the first signal.

[0309] In one possible implementation, the time domain resources of the first signal are associated with a sequence of a synchronization signal (including a PSS sequence and / or an SSS sequence or a new sequence), and different synchronization signal sequences may correspond to different first signal time domain resources. That is to say, the time domain resources of the first signal may be implicitly indicated by the sequence of the synchronization signal. In this way, there is no need to explicitly indicate the time domain resources of the first signal through time domain indication information, thereby reducing the time domain indication overhead of the first signal.

[0310] It can be understood that the above implicit indication method and explicit indication method can also be combined, that is, while the time domain resource of the first signal is implicitly indicated by the synchronization signal sequence, the time domain resource of the first signal is also indicated by the time domain indication information of the first signal. For example, some time domain parameters can be implicitly indicated by the sequence of the synchronization signal, and other time domain parameters can be explicitly indicated by the time domain indication information of the first signal, thereby improving flexibility.

[0311] (2) Frequency domain indication information

[0312] The frequency domain indication information of the first signal may indicate the frequency domain resources of the first signal. The frequency domain indication information indicates the frequency domain resources of the first signal, including two meanings: 1) the frequency domain indication information includes frequency domain resource related parameters (such as frequency domain position, etc.); 2) the frequency domain indication information is used to indicate frequency domain resource related parameters, for example, the frequency domain indication information may be an index, and different index values ​​indicate different frequency domain resources.

[0313] Optionally, the frequency domain indication information may indicate the frequency domain position of the first signal (such as a resource block (RB) position and / or a subcarrier position, etc.), and the frequency domain position may be the frequency domain position of the first signal (such as a starting RB position or a subcarrier starting position) relative to the frequency domain offset (such as an RB offset or a subcarrier offset, etc.) of the first synchronization signal block in an energy-saving mode or under limited transmission capacity conditions, or may be an absolute position in the frequency domain.

[0314] Optionally, the frequency domain indication information may indicate a sub-carrier spacing (SCS) of the first signal. The embodiment of the present application may support the transmission / reception of the first signal under various sub-carrier spacings.

[0315] Optionally, the frequency domain indication information may indicate a candidate frequency point in a candidate frequency point set of the first signal over the entire frequency band. A frequency point set over the entire frequency band may be preconfigured as a potential frequency point for the first signal. The frequency point set is called a candidate frequency point set, and the frequency bands in the candidate frequency point set are candidate frequency points for the first signal. The frequency domain indication information may be used to indicate all or part of the candidate frequency points in the candidate frequency point set as the frequency points for sending / receiving the first signal. In this way, when indicating the frequency domain resources of the first signal over the entire frequency band, for example, when indicating the frequency domain resources of the first signal in a frequency division duplex (FDD) system, resource indication overhead may be saved.

[0316] Optionally, the frequency domain indication information may indicate an operating bandwidth (OB), which is a bandwidth occupied by the first signal over the entire frequency band. The terminal device may send the first signal within the operating bandwidth according to the operating bandwidth indicated by the frequency domain indication information, and the network device may receive the first signal within the operating bandwidth. In this way, when indicating the frequency domain resources of the first signal over the entire frequency band, for example, when indicating the frequency domain resources of the first signal in an FDD system, the resource indication overhead may be reduced.

[0317] For example, Fig.13 A frequency domain configuration of a first signal is shown. Fig.13 In the embodiment, the first signal can be sent periodically, and the time domain indication information of the first signal can indicate the frequency domain offset (such as subcarrier offset or RB offset) of the first signal relative to the first synchronization signal block within a first signal period. The frequency domain indication information can also indicate the absolute frequency domain position of the first signal within the first signal period (such as the candidate frequency point occupied by the first signal).

[0318] It can be understood that the frequency domain parameters listed above (such as frequency domain position, subcarrier spacing, candidate frequency points, execution bandwidth, etc.) are only examples, and the embodiments of the present application do not limit the frequency domain parameters of the first signal.

[0319] In one possible implementation, different frequency domain parameters of the first signal (such as two or more parameters of the frequency domain position, subcarrier spacing, candidate frequency points, and execution bandwidth of the first signal) can be combined, and different parameter combinations can be identified using indexes (or numbers), that is, different frequency domain parameter combinations are indicated by different indexes. In this case, the frequency domain indication information of the first signal can be an index of a parameter combination, which is used to indicate multiple parameters in the corresponding parameter combination. This method can reduce the frequency domain indication overhead of the first signal.

[0320] In one possible implementation, the frequency domain resources of the first signal are associated with a sequence of a synchronization signal (including a PSS sequence and / or an SSS sequence or a new sequence), and different synchronization signal sequences may correspond to different first signal frequency domain resources. That is to say, the frequency domain resources of the first signal may be implicitly indicated by the synchronization signal sequence. In this way, there is no need to explicitly indicate the time domain resources of the first signal through frequency domain indication information, thereby reducing the frequency domain indication overhead of the first signal.

[0321] It can be understood that the above implicit indication method and the explicit indication method can also be combined, that is, while the frequency domain resources of the first signal are implicitly indicated by the synchronization signal sequence, the frequency domain resources of the first signal are also indicated by the frequency domain indication information of the first signal. For example, some frequency domain parameters can be implicitly indicated by the sequence of the synchronization signal, and the other frequency domain parameters can be explicitly indicated by the frequency domain indication information of the first signal.

[0322] (3) Power domain indication information

[0323] The power domain indication information of the first signal indicates the power configuration of the first signal, for example, it may indicate one or more of the target received signal strength (such as RECEIVED_TARGET_POWER), the maximum number of power ramping times (such as POWER_RAMPING_COUNTER), and the power ramping step length (such as POWER_RAMPING_STEP). The power domain indication information indicates the power configuration of the first signal, including two meanings: 1) the power domain indication information includes power configuration related parameters (such as target received signal strength, maximum number of power ramping times, and power ramping step length); 2) the power domain indication information is used to indicate power configuration related parameters, for example, the power domain indication information may be an index, and different index values ​​indicate different maximum number of power ramping times.

[0324] It can be understood that the power parameters listed above (such as target received signal strength, maximum number of power ramping times and power ramping step size, etc.) are only examples, and the embodiments of the present application do not limit the power parameters of the first signal.

[0325] In one possible implementation, different power parameters of the first signal can be combined, and different parameter combinations can be identified by using indexes (or numbers), that is, different power parameter combinations are indicated by different indexes. In this case, the power domain indication information of the first signal can be an index of a parameter combination, which is used to indicate multiple parameters in the corresponding parameter combination. A power parameter combination can also include only one power parameter. This method can reduce the power configuration indication overhead of the first signal. For example, if the first signal has n power parameters (n is an integer greater than or equal to 1), then the n power parameters can form 2 n-1 power parameter combination. A power parameter combination can include one or more power parameters. n -1 to identify the 2 n -1 power parameter combination.

[0326] In one possible implementation, the power configuration of the first signal is associated with a sequence of a synchronization signal (including a PSS sequence and / or an SSS sequence or a new sequence), and different synchronization signal sequences may correspond to different first signal power configurations. That is to say, the power configuration of the first signal may be implicitly indicated by the synchronization signal sequence. In this way, there is no need to explicitly indicate the power configuration of the first signal through power domain indication information, thereby reducing the power configuration indication overhead of the first signal.

[0327] It is understandable that the above-mentioned implicit indication method and explicit indication method can also be combined, that is, while the power configuration of the first signal is implicitly indicated by the synchronization signal sequence, the power configuration of the first signal is also indicated by the power domain indication information of the first signal. For example, some power parameters can be implicitly indicated by the sequence of the synchronization signal, and other power parameters can be explicitly indicated by the power domain indication information of the first signal.

[0328] (4) Code field indication information

[0329] The code domain indication information of the first signal may indicate the code domain resources of the first signal, for example, it may indicate the zero correlation zone of the first signal sequence (for example, Zero_Correletion_Zone_Counfig) and / or the root sequence of the first signal (for example, WUS_Root_Sequence_Index). The code domain indication information indicates the code domain resources of the first signal, including two meanings: 1) the code domain indication information includes code domain resource related parameters (for example, the zero correlation zone of the first signal sequence, the root sequence of the first signal); 2) the code domain indication information is used to indicate code domain related parameters, for example, the code domain indication information may be an index, and different index values ​​indicate different code domain resource parameters, such as the root sequence.

[0330] It can be understood that the above-listed code domain resource-related parameters are merely examples, and the embodiments of the present application do not limit the parameters of the code domain resources of the first signal.

[0331] In one possible implementation, different code domain resource parameters of the first signal can be combined, and different parameter combinations can be identified by using indexes (or numbers), that is, different code domain resource parameter combinations are indicated by different indexes. In this case, the code domain indication information of the first signal can be an index of a code domain resource parameter combination, which is used to indicate multiple parameters in the corresponding code domain resource parameter combination. A code domain resource parameter combination may also include only one code domain resource parameter. This approach can reduce the code domain resource indication overhead of the first signal. For example, if the first signal has n code domain resource parameters (n is an integer greater than or equal to 1), the n code domain resource parameters can form 2 n -1 code domain resource parameter combination. A code domain resource parameter combination can include one or more code domain resource parameters. n -1 to identify the 2 n -1 code domain resource parameter combination.

[0332] In one possible implementation, the code domain resources of the first signal are associated with a sequence of a synchronization signal (including a PSS sequence and / or an SSS sequence or a new sequence), and different synchronization signal sequences may correspond to different first signal code domain resources. That is to say, the code domain resources of the first signal may be implicitly indicated by the synchronization signal sequence. In this way, there is no need to explicitly indicate the code domain resources of the first signal through code domain indication information, thereby reducing the code domain resource indication overhead of the first signal.

[0333] It can be understood that the above implicit indication method and the explicit indication method can also be combined, that is, while the code domain resources of the first signal are implicitly indicated by the synchronization signal sequence, the code domain resources of the first signal are also indicated by the code domain indication information of the first signal. For example, part of the code domain resource parameters can be implicitly indicated by the sequence of the synchronization signal, and another part of the code domain resource parameters can be explicitly indicated by the code domain indication information of the first signal.

[0334] (5) Association indication information

[0335] The association indication information of the first signal may indicate the association relationship (or mapping relationship) between the resource (or resource configuration) of the first signal and the index of the first synchronization signal block, and the association relationship may specifically include the existence of an association or the absence of an association. For the convenience of description, the association relationship between the resource configuration of the first signal and the index of the first synchronization signal block may be referred to as the association configuration of the resource configuration of the first signal and the index of the first synchronization signal block. Optionally, the association indication information may indicate one or more of the time domain resource configuration, frequency domain resource configuration, code domain resource configuration, and power resource configuration of the first signal, and the association configuration of the index of the first synchronization signal block.

[0336] In a possible implementation, two or more of the above-mentioned time domain indication information, frequency domain indication information, code domain indication information, power domain indication information and associated indication information can be combined, and different combinations can be indicated by different indexes. For example, index 1 indicates combination 1, and index 2 indicates combination 2; wherein combination 1 includes time domain indication information 1 and frequency domain indication information 1, that is, combination 1 corresponds to the time domain resources indicated by time domain indication information 1 and the frequency domain resources indicated by frequency domain indication information 1; combination 2 includes time domain indication information 1 and frequency domain indication information 2, that is, combination 2 corresponds to the time domain resources indicated by time domain indication information 1 and the frequency domain resources indicated by frequency domain indication information 2. The configuration information of the first signal sent by the network device can be the index corresponding to the above-mentioned combination, so that the terminal device can determine the resource configuration of the first signal according to the combination indicated by the index. This method can reduce the resource configuration overhead of the first signal.

[0337] In a possible implementation, the network device may carry the configuration information of the first signal in the fifth information and send it. Figure 5 or Figure 8 In another possible implementation, the configuration information of the first signal is associated with the sequence of the synchronization signal, that is, the configuration information of the first signal can be implicitly indicated by the sequence of the synchronization signal, and its specific implementation can refer to the above embodiment and will not be repeated here.

[0338] Step 1102: The terminal device receives configuration information of the first signal, and sends the first signal in the first cell according to the configuration information of the first signal.

[0339] In an embodiment of the present application, if the cell selected by the terminal device is in energy-saving mode or has limited transmission capacity, the terminal device may send a first signal to wake up the cell. Optionally, the terminal device may send the first signal according to the configuration information of the first signal, such as sending the first signal according to the configured sequence and transmission power. Optionally, the terminal device may select a cell to be resident or accessed based on certain criteria. For example, the criterion for the terminal device to select a cell may be that the received power of the broadcast signal is greater than a threshold value, or the terminal device selects the cell from which the broadcast signal with the largest received power comes from among the received broadcast signals.

[0340] In a possible implementation, the network device may further send reception indication information to indicate whether the fifth information includes configuration information of the first signal. If the reception indication information indicates that the fifth information does not include configuration information of the first signal, the terminal device may use the configuration information of the first signal configured by the system by default, or use the configuration information of the first signal acquired before, to send the first signal to the network device. If the reception indication information indicates that the fifth information includes configuration information of the first signal, the terminal device may acquire the configuration information of the first signal in the fifth information, and send the first signal to the network device according to the configuration information.

[0341] Optionally, if the terminal device receives reception indication information, and the reception indication information indicates that the fifth information includes configuration information of the first signal, but the fifth information only includes part of the configuration information of the first signal and lacks other part of the configuration information, or does not include the configuration information of the first signal, the terminal device can send the first signal according to the pre-stored configuration information of the first signal, thereby saving signaling overhead.

[0342] Furthermore, Fig.11 The process shown may also include the following steps:

[0343] Step 1103: After receiving the first signal sent by the terminal device, the network device sends the second information, or sends the second information and the fourth information, in the first cell.

[0344] After the network device detects the first signal, it sends a broadcast signal in the first cell, such as including the second information, or including the second information and the fourth information. For details, please refer to Figure 5 or Figure 8 Related content in .

[0345] Step 1104: The terminal device initiates a random access process in the first cell according to the received broadcast signal, such as sending a random access request in the first cell.

[0346] The embodiments of the present application do not limit the specific implementation of random access. For example, the random access method specified in the current protocol can be used to perform the random access process. Figure 5 or Figure 8 Relevant content in the process shown.

[0347] It is understandable that in order to implement the functions in the above embodiments, the network device and the terminal device include hardware structures and / or software modules corresponding to the execution of each function. It should be easily appreciated by 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 the form of hardware or computer software driving hardware depends on the specific application scenario and design constraints of the technical solution.

[0348] Fig.14 and Fig.15 The following is a schematic diagram of the structure of possible communication devices provided in the embodiments of the present application. These communication devices can be used to implement the functions of the terminal device or network device in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments. In the embodiments of the present application, the communication device can be as follows: Figure 1 One of the terminals 120a-120j shown may also be Figure 1 The base station 110a or 110b shown may also be a module (such as a chip) applied to a terminal or a base station.

[0349] like Fig.14 As shown, the communication device 1400 includes a processing unit 1410 and a transceiver unit 1420. The communication device 1400 is used to implement the above Figure 5 , Figure 8 or Fig.11 The functions of the terminal device or the network device in the method embodiment shown in FIG.

[0350] When the communication device 1400 is used to implement Figure 5 The functions of the terminal device in the method embodiment shown are: the transceiver unit 1420 is used to receive first information in the first cell; the processing unit 1410 is used to determine to reside in or access the first cell based on the first information, and send a first signal in the first cell through the transceiver unit 1420, and the first signal is used to request the network device to send second information.

[0351] When the communication device 1400 is used to implement Figure 5 When the functions of the network device in the method embodiment shown are: the processing unit 1410 is used to send the first information in the first cell through the transceiver unit 1420; the transceiver unit 1420 is used to receive a first signal sent by the terminal device in the first cell, and the first signal is used to request the network device to send the second information; the processor 1410 is also used to send the second information in the first cell through the transceiver unit 1420.

[0352] When the communication device 1400 is used to implement Figure 8The functions of the terminal device in the method embodiment shown are: the transceiver unit 1420 is used to receive the first information and the third information in the first cell; the processing unit 1410 is used to determine to reside in or access the first cell based on the first information and the third information, and send a first signal in the first cell through the transceiver unit 1420, and the first signal is used to request the network device to send the second information and the fourth information.

[0353] When the communication device 1400 is used to implement Figure 8 When the functions of the network device in the method embodiment shown are: the processing unit 1310 is used to send the first information and the third information in the first cell through the transceiver unit 1420; the transceiver unit 1420 is used to receive a first signal sent by the terminal device in the first cell, and the first signal is used to request the network device to send the second information and the fourth information; the processing unit 1410 is also used to send the second information and the fourth information in the first cell through the transceiver unit 1420.

[0354] When the communication device 1400 is used to implement Fig.11 When the functions of the terminal device in the method embodiment shown are: the transceiver unit 1320 is used to receive the configuration information of the first signal; the processing unit 1410 is used to send the first signal in the first cell through the transceiver unit 1420 according to the configuration information of the first signal.

[0355] When the communication device 1400 is used to implement Fig.11 The functions of the network device in the method embodiment shown are: the processing unit 1410 is used to send configuration information of the first signal through the transceiver unit 1420; the transceiver unit 1420 is used to receive the first signal sent by the device in the first cell according to the configuration information.

[0356] For a more detailed description of the processing unit 1410 and the transceiver unit 1420, please refer to Figure 5 , Figure 8 or Fig.11 The relevant description in the method embodiment shown is directly obtained and will not be repeated here.

[0357] like Fig.15 As shown, the communication device 1500 includes a processor 1510 and an interface circuit 1520. The processor 1510 and the interface circuit 1520 are coupled to each other. It is understood that the interface circuit 1520 can be a transceiver or an input-output interface. Optionally, the communication device 1500 may also include a memory 1530 for storing instructions executed by the processor 1510 or storing input data required by the processor 1510 to execute instructions or storing data generated after the processor 1510 executes instructions.

[0358] When the communication device 1500 is used to implement Figure 5 , Figure 8 or Fig.11 When the method is shown, the processor 1510 is used to implement the function of the above-mentioned processing unit 1410, and the interface circuit 1520 is used to implement the function of the above-mentioned transceiver unit 1420.

[0359] When the above communication device is a chip applied to a terminal device, the terminal chip implements the functions of the terminal device in the above method embodiment. The terminal chip receives information from other modules in the terminal device (such as a radio frequency module or an antenna), and the information is sent by the network device to the terminal; or the terminal chip sends information to other modules in the terminal device (such as a radio frequency module or an antenna), and the information is sent by the terminal device to the network device.

[0360] When the above-mentioned communication device is a module applied to a network device, the network device module implements the function of the network device in the above-mentioned method embodiment. The network device module receives information from other modules in the network device (such as a radio frequency module or an antenna), and the information is sent by the terminal to the network device; or, the network device module sends information to other modules in the network device (such as a radio frequency module or an antenna), and the information is sent by the network device to the terminal. The network device module here can be a baseband chip of the network device, or it can be a DU or other module. The DU here can be a DU under the open radio access network (O-RAN) architecture.

[0361] It is understandable that the processor in the embodiments of the present application may be a central processing unit (CPU), or 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.

[0362] In the present application, another example of a communication device is provided, the communication device includes at least one processor and at least one memory, the at least one processor is coupled to the at least one memory, the at least one memory is used to store instructions, when the instructions are executed by the at least one processor, the communication device executes the method in the above embodiment. Take the communication device including a processor and a memory as an example, Fig.15As shown, the communication device 1500 includes a processor 1510 and a memory 1530. The processor 1510 and the memory 1530 are coupled, and the memory 1530 stores instructions. When the instructions stored in the memory 1530 are executed by the processor 1510, the communication device 1500 executes the method executed by the terminal device or the network device in the above embodiment.

[0363] 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, register, 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 can write information to the storage medium. The storage medium can also be a component of the processor. The processor and the storage medium can be located in an ASIC. In addition, the ASIC can be located in a network device or a terminal. The processor and the storage medium can also be present in a network device or a terminal as discrete components.

[0364] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented by software, it can be implemented in whole or in part 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 instruction is loaded and executed on a computer, the process or function described in the embodiment of the present application is executed 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 instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program or instruction may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means. The computer-readable storage medium may be any available medium that a computer can access or a data storage device such as a server, data center, etc. that integrates one or more available media. The available medium may be a magnetic medium, for example, a floppy disk, a hard disk, a tape; it may also be an optical medium, for example, a digital video disc; it may also be a semiconductor medium, for example, a solid-state hard disk. The computer-readable storage medium may be a volatile or nonvolatile storage medium, or may include both volatile and nonvolatile types of storage media.

[0365] In the various embodiments of the present application, unless otherwise specified or provided for in any logical conflict, the terms and / or descriptions between the different embodiments are consistent and may be referenced to each other, and the technical features in the different embodiments may be combined to form new embodiments according to their inherent logical relationships.

[0366] In the present application, "at least one" means one or more, and "more than one" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. In the text description of the present application, the character " / " generally indicates that the previous and next associated objects are in an "or" relationship; in the formula of the present application, the character " / " indicates that the previous and next associated objects are in a "division" relationship. "Including at least one of A, B and C" can mean: including A; including B; including C; including A and B; including A and C; including B and C; including A, B and C.

[0367] It is understood that the various numbers involved in the embodiments of the present application are only for the convenience of description and are not used to limit the scope of the embodiments of the present application. The size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic.

Claims

1. A communication method, characterized in that: The method comprises: Receiving first information in a first cell, the first information being used to identify whether the first cell is allowed to reside or access, the first information comprising one or more of the following: cell IP multimedia subsystem IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information; Determine to reside in or access the first cell according to the first information; A first signal is sent in the first cell, where the first signal is used to request a network device to send second information, where the second information is used for cell residency or access.

2. The method according to claim 1, characterized in that The receiving first information in the first cell includes: receiving the first information on a first resource of the first cell; The method further comprises: First indication information is received on a second resource of the first cell, where the first indication information indicates the first resource.

3. The method according to claim 1, characterized in that The receiving first information in the first cell includes: receiving the first information on a first resource of the first cell; The method further includes: receiving a physical broadcast channel (PBCH) on a second resource of the first cell, wherein a relative position of the first resource and the second resource is preset or preconfigured.

4. The method according to claim 2 or 3, characterized in that The method further comprises: Second indication information is received on the second resource, where the second indication information indicates whether to receive the first information.

5. The method according to claim 1, characterized in that The receiving first information in the first cell includes: The first information is received on a first resource of the first cell, where the first resource is also used to carry a PBCH.

6. The method according to any one of claims 1 to 5, characterized in that: The resources of the first signal are associated with the index of the first synchronization signal block.

7. The method according to claim 6, characterized in that The first synchronization signal block includes a synchronization signal, a PBCH and the first information.

8. The method according to claim 7, characterized in that The PBCH carries the index of the first synchronization signal block.

9. A communication method, characterized in that: The method comprises: Receiving first information and third information in a first cell, wherein the first information and the third information are used for cell residence or access, the first information includes one or more of the following: cell IP multimedia subsystem IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information, and the third information includes one or more of the following: a cell blocking flag and a same-frequency reselection flag; Determine whether to reside in or access the first cell according to the first information and the third information; A first signal is sent in the first cell, where the first signal is used to request a network device to send second information and fourth information, where the second information and the fourth information are used for cell residency or access.

10. The method according to any one of claims 1 to 9, characterized in that: The first information also includes one or more of the following: cell selection information and cell access related information.

11. The method according to any one of claims 1 to 10, characterized in that: After the first cell sends the first signal, the method further includes: receiving the second information at the first cell, where the second information includes at least one of the following information: cell IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information, cell selection information, cell access related information, system information scheduling information, serving cell common configuration information, counter configuration information, user access control restriction information, and terminal recovery identification indication; or The second information includes one or more of the following information: cell selection information, cell access related information, system information scheduling information, serving cell common configuration information, counter configuration information, user access control restriction information, and terminal recovery identification indication.

12. The method according to any one of claims 9 to 11, characterized in that: After the first cell sends the first signal, the method further includes: receiving the fourth information in the first cell, where the fourth information includes one or more of the following information: a cell blocking identifier, an intra-frequency reselection identifier, a system frame number, SIB1 subcarrier spacing configuration information, a frequency domain offset of a synchronization signal and a synchronization signal block SSB relative to a common resource block, a symbol position of a demodulation reference signal in the time domain, a search space and a control resource set of SIB1, and a half-frame indication; or The fourth information includes one or more of the following information: system frame number, SIB1 subcarrier spacing configuration information, frequency domain offset of synchronization signal and SSB relative to common resource block, symbol position of demodulation reference signal in time domain, search space and control resource set of SIB1, and half-frame indication.

13. The method according to any one of claims 9 to 12, characterized in that: The receiving the first information and the third information in the first cell includes: receiving the first information and the third information on a first resource of the first cell; The method further comprises: Resource indication information is received on a second resource of the first cell, where the resource indication information indicates the first resource.

14. The method according to claim 13, characterized in that The receiving the first information and the third information in the first cell includes: A first synchronization signal block is received in the first cell, where the first synchronization signal block includes a synchronization signal, the first information and the third information, and the resource indication information further indicates an index of the first synchronization signal block.

15. The method according to any one of claims 9 to 12, characterized in that: The receiving the first information and the third information in the first cell includes: receiving a synchronization signal, the first information, and the third information in a first resource of the first cell; In the first resource, the relative position between the synchronization signal and the first information is preset or preconfigured; or, the relative position between the synchronization signal and the third information is preset or preconfigured; or, the relative position between the synchronization signal, the first information and the second information is preset or preconfigured.

16. The method according to any one of claims 9 to 15, characterized in that: The resources of the first signal are associated with the index of the first synchronization signal block; wherein the first information and the third information are carried in the first synchronization signal block, and the first synchronization signal block also includes a synchronization signal.

17. The method according to any one of claims 1 to 16, characterized in that: The method further comprises: receiving a synchronization signal in the first cell; Determine whether to send the first signal according to the sequence of the synchronization signal, or determine configuration information of the first signal.

18. The method according to any one of claims 1 to 17, characterized in that: Sending a first signal in the first cell includes: If the first information is detected, it is determined to send the first signal in the first cell.

19. A communication method, characterized in that: The method comprises: Sending first information in a first cell, where the first information is used to identify whether the first cell is allowed to reside or access, and the first information includes one or more of the following: cell IP multimedia subsystem IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, and power information; receiving, in the first cell, a first signal sent by a terminal device, where the first signal is used to request a network device to send second information, where the second information is used for cell residency or access; The second information is sent in the first cell.

20. The method of claim 19, wherein: The sending the first information in the first cell includes: Sending the first information on a first resource of the first cell; The method further comprises: First indication information is sent on a second resource of the first cell, where the first indication information indicates the first resource.

21. The method of claim 19, wherein: The sending the first information in the first cell includes: Sending the first information on a first resource of the first cell; The method further comprises: A physical broadcast channel PBCH is sent on a second resource of the first cell, and a relative position of the first resource and the second resource is preset or preconfigured.

22. The method according to claim 20 or 21, characterized in that The method further comprises: Second indication information is sent on the second resource, where the second indication information indicates whether the terminal device receives the first information.

23. The method of claim 19, wherein: The sending the first information in the first cell includes: The first information is sent on a first resource of the first cell, where the first resource is also used to carry a PBCH.

24. The method according to any one of claims 19 to 23, characterized in that: The resources of the first signal are associated with the index of the first synchronization signal block.

25. The method of claim 24, wherein: The first synchronization signal block includes a synchronization signal, the first synchronization signal block includes a synchronization signal, a PBCH and the first information.

26. The method of claim 25, wherein: The PBCH carries the index of the first synchronization signal block.

27. A communication method, characterized in that: The method comprises: Sending first information and third information in a first cell, wherein the first information and the third information are used for cell residence or access, wherein the first information includes one or more of the following: cell IP multimedia subsystem IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information, and the third information includes one or more of the following: cell locking flag and same-frequency reselection flag; receiving a first signal in the first cell, where the first signal is used to request a network device to send second information and fourth information, where the second information and the fourth information are used for cell residency or access; The second information and the fourth information are sent in the first cell.

28. The method according to any one of claims 19 to 27, characterized in that The first information also includes one or more of the following: cell selection information and cell access related information.

29. The method according to any one of claims 19 to 28, characterized in that The second information includes at least one of the following information: cell IMS emergency call capability information, connection establishment failure control information, nr-NS maximum power list, power information, cell selection information, cell access related information, system information scheduling information, serving cell common configuration information, counter configuration information, user access control restriction information, terminal recovery identification indication; or The second information includes one or more of the following information: cell selection information, cell access related information, system information scheduling information, serving cell common configuration information, counter configuration information, user access control restriction information, and terminal recovery identification indication.

30. The method according to any one of claims 27 to 29, characterized in that: The fourth information includes one or more of the following information: a cell blocking identifier, a same-frequency reselection identifier, a system frame number, SIB1 subcarrier spacing configuration information, a frequency domain offset of a synchronization signal and a synchronization signal block SSB relative to a common resource block, a symbol position of a demodulation reference signal in the time domain, a search space and a control resource set of SIB1, and a half-frame indication; or The fourth information includes one or more of the following information: system frame number, SIB1 subcarrier spacing configuration information, frequency domain offset of synchronization signal and SSB relative to common resource block, symbol position of demodulation reference signal in time domain, search space and control resource set of SIB1, and half-frame indication.

31. The method according to any one of claims 27 to 30, characterized in that The sending the first information and the third information in the first cell includes: Sending the first information and the third information on a first resource of the first cell; The method further comprises: The resource indication is sent on a second resource of the first cell, and resource indication information is received on the second resource of the first cell, wherein the resource indication information indicates the first resource.

32. The method of claim 31, wherein: The sending the first information and the third information in the first cell includes: A first synchronization signal block is sent in the first cell, where the first synchronization signal block includes a synchronization signal, the first information and the third information, and the resource indication information further indicates an index of the first synchronization signal block.

33. The method according to any one of claims 27 to 30, characterized in that: The sending the first information and the third information in the first cell includes: Sending a synchronization signal, the first information, and the third information in a first resource of the first cell; In the first resource, the relative position between the synchronization signal and the first information is preset or preconfigured; or, the relative position between the synchronization signal and the third information is preset or preconfigured; or, the relative position between the synchronization signal, the first information and the second information is preset or preconfigured.

34. The method according to any one of claims 27 to 33, characterized in that The resources of the first signal are associated with the index of the first synchronization signal block; wherein the first information and the third information are carried in the first synchronization signal block, and the first synchronization signal block also includes a synchronization signal.

35. The method of claim 34, wherein: The sending the second information and the fourth information in the first cell includes: Determining, according to a resource of the first signal, an index of a first synchronization signal block corresponding to the resource; The second information and the fourth information are sent on the beam corresponding to the index.

36. The method according to any one of claims 19 to 35, characterized in that The method further comprises: A synchronization signal is sent in the first cell, and a sequence of the synchronization signal is associated with configuration information of the first signal.

37. A communication device, characterized in that: The method comprises a unit or a module for executing the method according to any one of claims 1 to 18, or comprises a unit or a module for executing the method according to any one of claims 19 to 36.

38. A communication device, characterized in that: include: The one or more processors are configured to execute the method of any one of claims 1-18, or to execute the method of any one of claims 19-36.

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