Communication method and device, network equipment and terminal equipment

Abstract

The invention discloses a communication method and device, network equipment and terminal equipment, and relates to the technical field of communication. The method comprises the following steps: network equipment first configuration information, wherein the first configuration information comprises configuration information of a first public uplink signal / channel and / or configuration information of a first public downlink signal / channel; correspondingly, the terminal equipment receives the first configuration information. Therefore, the first public downlink signal / channel has less transmission power consumption, and the first public uplink signal / channel has less receiving power consumption. Meanwhile, when the cell (or the network equipment) is in the first state, basic cell residence operation is provided for the terminal equipment through the first public downlink signal / channel and / or the first public uplink signal / channel. In addition, the network configuration of the first public uplink signal / channel and / or the first public downlink signal / channel is realized through the first configuration information.

Description

Technical Field

[0001] This application relates to the field of communication technologies, and in particular, to a communication method and apparatus, a network device, and a terminal device. Background Art

[0002] Network energy savings is an issue that concerns operators and equipment manufacturers, and network energy savings is very beneficial for reducing operating costs and environmental protection.

[0003] Generally speaking, when the network load is zero, in the entire transmission power consumption of the network device, the transmission power consumption of the common downlink signal / channel occupies a relatively large proportion. At the same time, in the entire reception power consumption of the network device, the reception power consumption of the common uplink signal / channel also occupies a relatively large proportion.

[0004] Therefore, in order to achieve network energy savings, further research is needed on how to reduce the transmission power consumption of the common downlink signal / channel and / or the reception power consumption of the common uplink signal / channel. Summary of the Invention

[0005] This application provides a communication method and apparatus, a network device, and a terminal device, aiming to solve the problem of how to achieve network energy savings.

[0006] In a first aspect, a communication method of this application includes:

[0007] Receiving first configuration information, where the first configuration information includes configuration information of a first common uplink signal / channel and / or configuration information of a first common downlink signal / channel.

[0008] It can be seen that when the network load is zero, since the transmission of the common downlink signal / channel occupies a relatively large proportion of the transmission power consumption of the network device, and the reception of the common uplink signal / channel also occupies a relatively large proportion of the reception power of the network device, this application needs to reduce the transmission power consumption of the common downlink signal / channel and / or the reception power consumption of the common uplink signal / channel in order to achieve network energy savings.

[0009] In order to reduce the transmission power consumption of the common downlink signal / channel, this application can process the original common downlink signal / channel so that the processed common downlink signal / channel requires less transmission power consumption compared to the original common downlink signal / channel, and the processed common downlink signal / channel is referred to as the "first common downlink signal / channel".

[0010] Similarly, to reduce the receiving power consumption of the common uplink signal / channel, the present application can process the original common uplink signal / channel, so that the processed common uplink signal / channel requires less receiving power consumption compared with the original common uplink signal / channel, and the processed common uplink signal / channel is referred to as the "first common uplink signal / channel".

[0011] Finally, the present application realizes network configuration of the first common uplink signal / channel and / or the first common downlink signal / channel through the first configuration information. Meanwhile, when the cell (or network device) is in the first state, basic cell residence operations are provided to the terminal device through the first common downlink signal / channel and / or the first common uplink signal / channel.

[0012] In a second aspect, a communication method of the present application includes:

[0013] Sending first configuration information, where the first configuration information includes configuration information of the first common uplink signal / channel and / or configuration information of the first common downlink signal / channel.

[0014] In a third aspect, a communication method of the present application includes:

[0015] Receiving indication information;

[0016] Obtaining second configuration information according to the indication information, where the second configuration information includes configuration information of the second common uplink signal / channel and / or configuration information of the second common downlink signal / channel.

[0017] It can be seen that the present application can use the indication information to indicate at least one of the network's consent to send the on-demand common downlink signal / channel, the network's consent to receive the on-demand common uplink signal / channel, and the cell or network device has entered the second state from the first state, so as to respond to the application of the terminal device. Meanwhile, the terminal device can obtain the second configuration information according to the indication information, and realize network configuration of the second common uplink signal / channel and / or the second common downlink signal / channel through the second configuration information.

[0018] In a fourth aspect, a communication method of the present application includes:

[0019] Sending indication information, where the indication information is used to obtain second configuration information, and the second configuration information includes configuration information of the second common uplink signal / channel and / or configuration information of the second common downlink signal / channel.

[0020] In a fifth aspect, a communication method of the present application includes:

[0021] Receiving trigger information;

[0022] Confirm that the second configuration information becomes effective according to the triggering information, where the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

[0023] It can be seen that this application can use the triggering information to indicate that the network agrees to send a common downlink signal / channel on demand, the network agrees to receive a common uplink signal / channel on demand, and / or at least one of the cell or network device has entered the second state from the first state, so as to respond to the application of the terminal device. In this way, the terminal device sends a second common uplink signal / channel and / or receives a second common downlink signal / channel according to the effectiveness of the second configuration information.

[0024] In a sixth aspect, a communication method of this application includes:

[0025] Send triggering information, where the triggering information is used to confirm that the second configuration information becomes effective, and the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

[0026] In a seventh aspect, a communication device of this application includes:

[0027] A receiving unit, configured to receive first configuration information, where the first configuration information includes configuration information of a first common uplink signal / channel and / or configuration information of a first common downlink signal / channel.

[0028] In an eighth aspect, a communication device of this application includes:

[0029] A sending unit, configured to send first configuration information, where the first configuration information includes configuration information of a first common uplink signal / channel and / or configuration information of a first common downlink signal / channel.

[0030] In a ninth aspect, a communication device of this application includes:

[0031] A receiving unit, configured to receive indication information and obtain second configuration information according to the indication information, where the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

[0032] In a tenth aspect, a communication device of this application includes:

[0033] A sending unit, configured to send indication information, where the indication information is used to obtain second configuration information, and the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

[0034] In an eleventh aspect, a communication device according to the present application includes:

[0035] a receiving unit, configured to receive trigger information;

[0036] a determining unit, configured to confirm that second configuration information becomes effective according to the trigger information, where the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

[0037] In a twelfth aspect, a communication device according to the present application includes:

[0038] a sending unit, configured to send trigger information, where the trigger information is used to confirm that second configuration information becomes effective, and the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

[0039] In a thirteenth aspect, the steps in the methods designed in the first aspect, the third aspect, or the fifth aspect above are applied to a terminal device.

[0040] In a fourteenth aspect, the steps in the methods designed in the second aspect, the fourth aspect, or the sixth aspect above are applied to a network device.

[0041] In a fifteenth aspect, a terminal device according to the present application includes a processor, a memory, and a computer program or instruction stored in the memory. Wherein, the processor executes the computer program or instruction to implement the steps in the methods designed in the first aspect, the third aspect, or the fifth aspect above.

[0042] In a sixteenth aspect, a network device according to the present application includes a processor, a memory, and a computer program or instruction stored in the memory. Wherein, the processor executes the computer program or instruction to implement the steps in the methods designed in the second aspect, the fourth aspect, or the sixth aspect above.

[0043] In a seventeenth aspect, a chip according to the present application includes a processor and a communication interface. Wherein, the processor executes the steps in the methods designed in any one of the second aspect to the sixth aspect above.

[0044] In an eighteenth aspect, a chip module according to the present application includes a transceiver component and a chip, and the chip includes a processor. Wherein, the processor executes the steps in the methods designed in any one of the second aspect to the sixth aspect above.

[0045] In a nineteenth aspect, a computer-readable storage medium of the present application is provided. It stores a computer program or instructions, and when the computer program or instructions are executed, the steps in the method designed in any one of the second to sixth aspects above are implemented. For example, the computer program or instructions are executed by a processor.

[0046] In a twentieth aspect, a computer program product of the present application is provided, including a computer program or instructions. When the computer program or instructions are executed, the steps in the method designed in any one of the second to sixth aspects above are implemented. For example, the computer program or instructions are executed by a processor. Description of the Drawings

[0047] Figure 1 is a schematic diagram of the architecture of a communication system according to an embodiment of the present application;

[0048] Figures 2 to 4 is a schematic flowchart of a communication method according to an embodiment of the present application;

[0049] Figure 5 is a block diagram of the functional units of a communication device according to an embodiment of the present application;

[0050] Figure 6 is a block diagram of the functional units of another communication device according to an embodiment of the present application;

[0051] Figure 7 is a block diagram of the functional units of another communication device according to an embodiment of the present application;

[0052] Figure 8 is a schematic diagram of the structure of a terminal device according to an embodiment of the present application;

[0053] Figure 9 is a schematic diagram of the structure of a network device according to an embodiment of the present application. Detailed Embodiments

[0054] It should be understood that the terms "first", "second", etc. involved in the embodiments of the present application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, software, product, or device that includes a series of steps or units is not limited to the listed steps or units, but also includes unlisted steps or units, or other steps or units inherent to these processes, methods, products, or devices.

[0055] In the embodiments of the present application, the "embodiment" means that the specific features, structures or characteristics described in combination with the embodiment may be included in at least one embodiment of the present application. The occurrence of this phrase at various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0056] The "and / or" in the embodiments of the present application describes the association relationship of associated objects and indicates that three relationships may exist. For example, A and / or B may represent the following three situations: A exists alone; A and B exist simultaneously; B exists alone. Among them, A and B may be singular or plural.

[0057] In the embodiments of the present application, the symbol " / " may indicate that the front and rear associated objects have an "or" relationship. Of course, the symbol " / " may also indicate that the front and rear associated objects have an "and" relationship. For example, A / B may represent the following three situations: A, B, A and B.

[0058] In addition, the symbol " / " may also represent a division sign, that is, perform a division operation. For example, A / B may represent A divided by B.

[0059] The "at least one (item)" or its similar expression in the embodiments of the present application refers to any combination of these items, including any combination of single item (s) or plural items (s), and refers to one or more, and multiple refers to two or more. For example, at least one (item) of a, b or c may represent the following seven situations: a, b, c, a and b, a and c, b and c, a, b and c. Among them, each of a, b, c may be an element or a set containing one or more elements.

[0060] The "equal to" in the embodiments of the present application can be used in combination with "greater than" and is applicable to the technical solutions adopted when it is greater than, or can also be used in combination with "less than" and is applicable to the technical solutions adopted when it is less than. When "equal to" is used in combination with "greater than", it is not used in combination with "less than"; when "equal to" is used in combination with "less than", it is not used in combination with "greater than".

[0061] In the embodiments of the present application, the "(of)", "corresponding / relevant", "corresponding", "indicated" may sometimes be used interchangeably. It should be noted that when their differences are not emphasized, the meanings they express are the same.

[0062] The "connection" in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection to achieve communication between devices, and no limitation is made thereto.

[0063] In the embodiments of the present application, "network" can be expressed as the same concept as "system", and a communication system is a communication network.

[0064] The following will explain the relevant content, concepts, meanings, technical problems, technical solutions, beneficial effects, etc. involved in the embodiments of the present application.

[0065] I. Communication System, Terminal Device, and Network Device

[0066] 1. Communication System

[0067] The present application can be applied to various communication systems to meet different communication scenario requirements.

[0068] Optionally, the present application can be applied to long term evolution (LTE) systems, advanced long term evolution (LTE-A) systems, new radio (NR) systems, evolved NR systems, LTE-based access to unlicensed spectrum (LTE-U) systems, NR-based access to unlicensed spectrum (NR-U) systems, non-terrestrial networks (NTN) systems, universal mobile telecommunication system (UMTS), 6th-Generation (6G) communication systems, etc.

[0069] Optionally, the present application can be applied to communication scenarios such as device to device (D2D) systems, machine to machine (M2M) systems, machine type communication (MTC), vehicle to vehicle (V2V) systems, vehicle to everything (V2X) systems, narrow band internet of things (NB-IoT) systems, passive internet of things communication, etc.

[0070] Optionally, the present application can be applied to scenarios such as beamforming, carrier aggregation (CA), dual connectivity (DC), or standalone (SA) deployment scenarios, etc.

[0071] Since the embodiments of the present application describe each embodiment in combination with a terminal device and a network device, the terminal device and the network device involved will be specifically described below.

[0072] 2. Terminal Device

[0073] A terminal device can be a device with transceiver functions, and can also be called a terminal, a passive device, an Internet of Things device, a user equipment (UE), a remote UE, a relay UE, an access terminal device, a user unit, a user station, a mobile station, a mobile platform, a remote station, a mobile device, a user terminal device, an intelligent terminal device, a wireless communication device, a user agent, or a user device.

[0074] For example, the terminal device can be a mobile phone, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in unmanned autonomous driving, a wireless terminal device in remote medical treatment, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0075] For another example, the terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a handheld device with wireless communication capabilities, a computing device, or other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a next-generation communication system (such as an NR communication system, a 6G communication system), or a terminal device in a future evolved public land mobile network (PLMN), etc., and no specific limitation is made thereto.

[0076] Optionally, the terminal device may be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it may be deployed on water (such as a ship, etc.); it may be deployed in the air (such as an airplane, a balloon, a satellite, etc.).

[0077] Optionally, the terminal device may include a device with wireless communication capabilities, such as a chip system, a chip, a chip module. By way of example, the chip system may include a chip and may also include other discrete devices.

[0078] Optionally, the terminal device may be a chip, a chip module, a device, a unit, etc., and no specific limitation is made thereto.

[0079] 3. Network device

[0080] The network device may be a device with transceiver capabilities and may be used for communication with the terminal device.

[0081] Optionally, the network device may be responsible for radio resource management (RRM) on the air interface side, quality of service (QoS) management, data compression and encryption, data transceiver, etc.

[0082] Optionally, the network device may include a base station (BS) in a communication system or a device deployed in a radio access network (RAN) for providing wireless communication capabilities, that is, the network device may include devices in the RAN.

[0083] For example, the devices in the RAN may include an evolved Node B (eNB or eNodeB) in an LTE communication system, a next-generation evolved Node B (ng-eNB) in an NR communication system, a next-generation Node B (gNB) in an NR communication system, a master node (MN) in a dual-connectivity architecture, a secondary node (SN) in a dual-connectivity architecture, etc., and no specific limitations are imposed thereon.

[0084] Optionally, the network device may include a device in a core network (CN).

[0085] For example, the devices in the CN may include an access and mobility management function (AMF), a user plane function (UPF), a session management function (SMF), etc.

[0086] Optionally, the network device may also be an access point (AP) in a WLAN, a relay station, a communication device in a future-evolved PLMN network, a communication device in an NTN network, etc.

[0087] Optionally, the network device may include a device having a function of providing wireless communication for a terminal device, such as a chip system, a chip, or a chip module. By way of example, the chip system may include a chip, or may include other discrete devices.

[0088] Optionally, the network device may be a transmission and reception point (TRP).

[0089] Optionally, the network device may communicate with an Internet Protocol (IP) network. For example, the Internet, a private IP network, or other data networks, etc.

[0090] Optionally, the network device may include an independent node to implement the functions of the above base station, or may include two or more independent nodes to implement the functions of the above base station. For example, the network device includes a centralized unit (CU) and a distributed unit (DU), such as gNB-CU and gNB-DU. Further, in some other embodiments of the present application, the network device may further include an active antenna unit (AAU). Among them, the CU implements a part of the functions of the network device, and the DU implements another part of the functions of the network device. For example, the CU is responsible for processing non-real-time protocols and services, and implementing the functions of the radio resource control (RRC) layer, the service data adaptation protocol (SDAP) layer, and the packet data convergence protocol (PDCP) layer. The DU is responsible for processing physical layer protocols and real-time services, and implementing the functions of the radio link control (RLC) layer, the medium access control (MAC) layer, and the physical (PHY) layer. In addition, the AAU can implement some physical layer processing functions, radio frequency processing, and related functions of the active antenna. Since the information of the RRC layer will ultimately become the information of the PHY layer, or be transformed from the information of the PHY layer, therefore, in this network deployment, high-layer signaling (such as RRC signaling) can be considered to be generated by the CU and sent by the DU, or sent jointly by the DU and the AAU. It can be understood that the network device may include at least one of the CU, DU, and AAU. In addition, the CU can be classified as a RAN device, or the CU can also be classified as a core network device, and no specific limitation is made thereto.

[0091] Optionally, the network device may be any site in a multi-site that performs coherent joint transmission (CJT) with the terminal device, or another site outside the multi-site, or another network device that communicates with the terminal device over the network, without specific limitation thereto. Among them, the multi-site coherent joint transmission may be joint coherent transmission by multiple sites, or different data belonging to the same physical downlink shared channel (PDSCH) are sent from different sites to the terminal device, or multiple sites are virtualized into one site for transmission. Names with the same meaning specified in other standards are also applicable to this application, that is, this application does not limit the names of these parameters. The sites in the multi-site coherent joint transmission may be remote radio heads (RRHs), transmit-receive points (TRPs), etc., without specific limitation thereto.

[0092] Optionally, the network device may be any site in a multi-site that performs non-coherent joint transmission with the terminal device, or another site outside the multi-site, or another network device that communicates with the terminal device over the network, without specific limitation thereto. Among them, the multi-site non-coherent joint transmission may be joint non-coherent transmission by multiple sites, or different data belonging to the same PDSCH are sent from different sites to the terminal device. Names with the same meaning specified in other standards are also applicable to this application, that is, this application does not limit the names of these parameters.

[0093] It should be noted that the TRP in this application is not limited to the coherent joint transmission or non-coherent joint transmission scenarios, and may also be applicable to other scenarios, without specific limitation thereto.

[0094] Optionally, the network device may have mobility characteristics. For example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, etc. Optionally, the network device may also be a base station located on land, water, etc.

[0095] Optionally, the network device may provide services for a cell, and the terminal device in the cell may communicate with the network device through transmission resources (such as spectrum resources). Among them, the cell may be a macro cell, a small cell, a metro cell, a micro cell, a pico cell, a femto cell, etc.

[0096] Optionally, the network device in the embodiments of the present application may be a chip, a chip module, a device, a unit, etc., and no specific limitation is made thereto.

[0097] 4. Example Explanation

[0098] The following makes an exemplary explanation of the communication system in the embodiments of the present application.

[0099] Exemplarily, the network architecture of a communication system in the embodiments of the present application may refer to Figure 1 . As Figure 1 shown, the communication system 10 may include a network device 110 and a terminal device 120.

[0100] It should be noted that Figure 1 this is only an example illustration of the network architecture of a communication system, and does not limit the network architecture of the communication system in the embodiments of the present application.

[0101] For example, the communication system 10 may further include a server or other devices.

[0102] For another example, in addition to the network device 110, the communication system 10 may further include other network devices.

[0103] For another example, in addition to the terminal device 120, the communication system 10 may further include other terminal devices.

[0104] II. A Communication Method

[0105] When the network load is zero or low, since the transmission of the common downlink signal / channel will occupy a relatively large proportion of the transmission power consumption of the network device, and the reception of the common uplink signal / channel will also occupy a relatively large proportion of the reception power of the network device, therefore, the present application needs to reduce the transmission power consumption of the common downlink signal / channel and / or the reception power consumption of the common uplink signal / channel in order to achieve network energy saving.

[0106] It should be noted that the "common downlink signal / channel" in this embodiment can be understood as a common downlink signal or a common downlink channel. Of course, the "common downlink signal / channel" can also be understood as a common downlink signal and a common downlink channel. That is to say, the "common downlink signal / channel" can represent the following three situations: a common downlink signal, a common downlink channel, and a common downlink signal and a common downlink channel, and no specific restrictions are made in this regard.

[0107] In addition, the "common uplink signal / channel" in this embodiment can be understood as a common uplink signal or a common uplink channel. Of course, the "common uplink signal / channel" can also be understood as a common uplink signal and a common uplink channel. That is to say, the "common uplink signal / channel" can represent the following three situations: a common uplink signal, a common uplink channel, and a common uplink signal and a common uplink channel, and no specific restrictions are made in this regard.

[0108]

Reducing the Transmission Power Consumption of the Common Downlink Signal / Channel

[0109] In order to reduce the transmission power consumption of the common downlink signal / channel, the present application can process the original common downlink signal / channel so that the processed common downlink signal / channel requires less transmission power consumption compared to the original common downlink signal / channel. Among them, the processed common downlink signal / channel can be referred to as the "reduced common downlink signal / channel".

[0110] The reduced common downlink signal / channel can be used to provide the terminal device for basic cell reselection operations, so as to reduce the transmission energy consumption of the network device; it can be used for the terminal device to achieve rough downlink synchronization with the cell and measure the cell when the cell (or network device) is in the first state. In some scenarios, the terminal device can receive the system information (SI) and paging of the cell. Among them, the first state includes at least one of a turning off state, an energy-saving state, a sleep state, a non-active state, or a non-active period.

[0111] Optionally, the reduced common downlink signal / channel includes a common downlink signal / channel with a longer period.

[0112] It can be understood that the period of the original common downlink signal / channel is lengthened. In this way, the network device can reduce the transmission energy consumption when transmitting the common downlink signal / channel with a longer period.

[0113] Optionally, the reduced common downlink signal / channel includes a common downlink signal / channel with a reduced number of beams. For example, a single-beam common downlink signal / channel.

[0114] It should be noted that the number of beams refers to the number of directional beams formed in the antenna array for transmission or reception. Reducing the number of beams means reducing the diversity of radiation directions, so as to reduce the resource overhead and power consumption of the system. Therefore, the number of beams required for transmitting the original common downlink signal / channel is reduced. In this way, the network device can reduce the transmission energy consumption when sending the common downlink signal / channel with a reduced number of beams.

[0115] Optionally, the "common downlink signal / channel" described in this application may include at least one of the following: synchronization signal / PBCH block (SSB), channel state information reference signal (CSI-RS).

[0116] Optionally, the "common downlink signal / channel" described in this application may also include: system information block 1 (SIB1).

[0117] Optionally, the "common downlink signal / channel" described in this application may also include: other system information (OSI). Generally speaking, OSI includes system information block x (SIBx), where x > 1.

[0118] Optionally, the "common downlink signal / channel" described in this application may also include: paging.

[0119] Optionally, the reduced SSB may be an SSB with a longer period. For example, the original period or default period of the SSB is 20 milliseconds, and the period or default period of the reduced SSB is 160 milliseconds.

[0120] Optionally, the reduced SSB may also be an SSB with a reduced number of beams. For example, within an SSB burst or a half-frame, the original number of SSBs (number of beams) is 8, and the number of reduced SSBs is 2.

[0121] Optionally, the reduced CSI-RS may be a CSI-RS with a longer period. For example, the original period of the CSI-RS is 20 milliseconds, and the period of the reduced CSI-RS is 160 milliseconds.

[0122] Optionally, the reduced CSI-RS can also be the CSI-RS with a reduced number of beams. For example, the original CSI-RS for tracking can be configured with 8 beams, and the reduced CSI-RS for tracking can be configured with 2 beams.

[0123] Optionally, the reduced SIB1 can be the SIB1 with a longer period or a longer repetition periodicity. For example, the original period of SIB1 is 160 milliseconds, and the reduced period of SIB1 is 1280 milliseconds; or, the original repetition period of SIB1 is 20 milliseconds, and the reduced repetition period of SIB1 is 160 milliseconds.

[0124] Optionally, the reduced SIB1 can also be the SIB1 with a reduced number of beams. For example, the original SIB1 has a QCL relationship with 8 SSBs (i.e., the number of beams is 8), and the reduced SIB1 has a QCL relationship with 2 SSBs (i.e., the number of beams is 2). The QCL relationship can be an association relationship or a mapping relationship.

[0125] Optionally, the reduced OSI can be the OSI with a longer period or a longer repetition periodicity. For example, the original period of OSI is 160 milliseconds, and the reduced period of OSI is 1280 milliseconds; or, the original repetition period of OSI is 20 milliseconds, and the reduced repetition period of OSI is 160 milliseconds.

[0126] Optionally, the reduced OSI can also be the OSI with a reduced number of beams. For example, the original OSI has a QCL relationship with 8 SSBs (i.e., the number of beams is 8), and the reduced OSI has a QCL relationship with 2 SSBs (i.e., the number of beams is 2). The QCL relationship can be an association relationship or a mapping relationship.

[0127] Optionally, the reduced paging can be the paging with a longer period. For example, the original period of paging is 160 milliseconds, and the reduced period of paging is 1280 milliseconds.

[0128] Optionally, the reduced paging can also be the OSI with a reduced number of beams. For example, the original paging has a QCL relationship with 8 SSBs (i.e., the number of beams is 8), and the reduced paging has a QCL relationship with 2 SSBs (i.e., the number of beams is 2). The QCL relationship can be an association relationship or a mapping relationship.

[0129]

Reduce the receiving power consumption of common uplink signals / channels

[0130] To reduce the receiving power consumption of common uplink signals / channels, the present application can process the original common uplink signals / channels so that the processed common uplink signals / channels require less receiving power consumption compared to the original common uplink signals / channels. Among them, the processed common uplink signals / channels can be referred to as "reduced common uplink signals / channels".

[0131] The reduced common uplink signals / channels can be used to provide terminal devices for basic cell reselection operations to reduce the receiving energy consumption of network devices; they can be used for terminal devices to achieve rough uplink synchronization with the cell when the cell (or network device) is in the first state.

[0132] Optionally, the reduced common uplink signals / channels include common uplink signals / channels with a longer period.

[0133] It can be understood that the period of the original common uplink signals / channels is lengthened. In this way, the network device can reduce the receiving power consumption when receiving the common uplink signals / channels with a longer period.

[0134] Optionally, the reduced common uplink signals / channels include common uplink signals / channels with fewer beam numbers. For example, a single-beam common uplink signal / channel.

[0135] It can be understood that the number of beams required for transmitting the original common uplink signals / channels is reduced. In this way, the network device can reduce the receiving power consumption when receiving the common uplink signals / channels with fewer beam numbers.

[0136] Optionally, the "common uplink signals / channels" described in the present application may include at least one of the following: physical random access channel (PRACH), message A (MsgA), sounding reference signal (SRS). Among them, PRACH and preamble can be common (such as for competitive random access) or proprietary (such as for non-competitive random access); SRS can be common (such as for multiple terminal devices sharing SRS) or proprietary.

[0137] It should be noted that PRACH includes time-domain resources, frequency-domain resources, and code-domain resources. The PRACH occasion is equivalent to the time-domain resources and / or frequency-domain resources of PRACH, and the preamble is equivalent to the code-domain resources of PRACH. The terminal device can only use one or more preambles within the PRACH occasion, that is, partial time-domain resources, frequency-domain resources, and / or code-domain resources.

[0138] Optionally, the reduced PRACH may be a PRACH with a longer period. For example, the original PRACH has a period of 20 milliseconds, and the reduced PRACH has a period of 160 milliseconds. The above PRACH with a longer period may be a RO with a longer period, because the RO is the time-frequency resource of the PRACH.

[0139] Optionally, the reduced PRACH may also be a PRACH with fewer beam numbers. For example, the original PRACH is mapped to 8 SSBs (i.e., the number of beams is 8), and the reduced PRACH is mapped to 2 SSBs (i.e., the number of beams is 2). The above PRACH with fewer beam numbers may be a RO or preamble with fewer beam numbers, because both the RO and the preamble can be mapped to the SSBs (i.e., mapped to the beams). Specifically, the reduced PRACH may also be a RO or preamble with fewer beam numbers. For example, the original RO or preamble is mapped to 8 SSBs (i.e., the number of beams is 8), and the reduced RO or preamble is mapped to 2 SSBs (i.e., the number of beams is 2).

[0140] Optionally, the reduced MsgA may be a MsgA with a longer period. For example, the original MsgA has a period of 20 milliseconds, and the reduced MsgA has a period of 160 milliseconds. The above MsgA with a longer period may be a RO or PUSCH occasion (PO) with a longer period, because both the RO and the PO are the time-frequency resources of the PRACH.

[0141] Optionally, the reduced MsgA may also be a MsgA with fewer beam numbers. For example, the original MsgA is mapped to 8 SSBs (i.e., the number of beams is 8), and the reduced MsgA is mapped to 2 SSBs (i.e., the number of beams is 2). The above MsgA with fewer beam numbers may be a RO, preamble or PO with fewer beam numbers, because the RO, preamble and PO can all be mapped to the SSBs (i.e., mapped to the beams). Specifically, the reduced PRACH may also be a RO, preamble or PO with fewer beam numbers. For example, the original RO, preamble or PO is mapped to 8 SSBs (i.e., the number of beams is 8), and the reduced RO, preamble or PO is mapped to 2 SSBs (i.e., the number of beams is 2).

[0142] Optionally, the reduced SRS may be a SRS with a longer period. For example, the original SRS has a period of 20 milliseconds, and the reduced SRS has a period of 160 milliseconds.

[0143] Optionally, the reduced SRS can also be an SRS with a reduced number of beams. For example, the original SRS can be configured with 8 beams, and the reduced SRS for tracking can be configured with 2 beams.

[0144] The random access procedure can be divided into a 4-step random access procedure and a 2-step random access procedure.

[0145] Specifically, the 4-step random access procedure includes the following steps:

[0146] Step 1: The terminal device sends a PRACH to the network device. The PRACH can also be referred to as message 1 (Msg1). Msg1 is the first message in the 4-step random access procedure. Since the PRACH is carried by the preamble, the PRACH can also be the preamble. The main function of the preamble can be to request access from the network device, enable the network device to estimate the transmission delay between the network device and the terminal device based on the preamble and calibrate the uplink timing accordingly, and indicate it to the terminal device through a random access response (RAR) message.

[0147] Step 2: If the network device allows the terminal device to access, it sends an RAR to the terminal device. The RAR can also be referred to as message 2 (Msg2). Msg2 can include information such as uplink grant, RAPID, and cell-radio network temporary identifier (C-RNTI).

[0148] Step 3: The terminal device can send message 3 (Msg3) to the network device based on the uplink time-frequency resource information provided by the uplink grant in Msg2. Msg3 is the third message in the 4-step random access procedure. Msg3 is carried by the physical uplink share channel (PUSCH). Additionally, Msg3 can be a radio resource control setup request (RRC setup request) message.

[0149] Step 4: After the network device receives Msg3 sent by the terminal device, it sends message 4 (Msg4) to the terminal device. Msg4 can be an RRC setup message. Generally, when the terminal device receives Msg4, it is equivalent to the completion of the random access procedure.

[0150] The 4-step random access procedure is also known as the Type-1 random access procedure.

[0151] Specifically, the 2-step random access procedure includes the following steps:

[0152] Step 1: The terminal device sends a PRACH and a PUSCH to the network device. The PRACH and the PUSCH can also be referred to as MsgA. MsgA can include the content of Msg1 and Msg3.

[0153] Step 2: If the network device allows the terminal device to access, it sends a random access response to the terminal device. For the two-step random access procedure, the RAR can also be referred to as message B (MsgB). MsgB can include the content of Msg2 and Msg4. Generally speaking, when the terminal device receives MsgB, it is equivalent to the terminal device completing the random access procedure.

[0154] The two-step random access procedure is also known as the Type-2 random access procedure.

[0155] In addition, after the terminal device completes the random access procedure, it generally also needs to send message 5 (Msg5). Among them, message 5 can be a radio resource control setup complete message.

[0156]

Implementing data transmission and reception

[0157] Since the reduced common uplink and downlink signals / channels may only provide the terminal device for basic cell reselection operations, when the terminal device needs to perform data transmission and reception in the cell, the terminal device also needs to access the cell.

[0158] To enable the terminal device to access the cell, this application introduces on-demand common downlink signals / channels and on-demand common uplink signals / channels. In this way, the terminal device can perform a random access procedure (such as initial access) through the on-demand common uplink and downlink signals / channels, and finally access the cell through the random access procedure.

[0159] The following embodiments of this application will illustrate the "process of network configuring reduced common uplink and downlink signals / channels", the "process of the terminal device requesting or requesting on-demand common uplink and downlink signals / channels", the "process of network configuring on-demand common uplink and downlink signals / channels", etc. from the following multiple solutions, so as to achieve network energy saving. Among them, each solution can be related and combined with each other, and any combination can be made between each solution to form a new embodiment, and the new solution is also within the scope protected by this application, and will not be elaborated here.

[0160]

Solution 1

[0161] ◆ Description

[0162] To reduce the transmission power consumption of common downlink signals / channels and / or the reception power consumption of common uplink signals / channels, this application introduces "reduced common uplink signals / channels" and "reduced common downlink signals / channels". In "Solution 1", this application can implement network configuration of "reduced common downlink signals / channels" and / or "reduced common uplink signals / channels" through signaling or messages.

[0163] Next, this application will be illustrated by providing a communication method, as Figure 2 shown. Among them, this communication method takes the interaction between a network device and a terminal device as an example to implement network configuration. The network device can be a chip, a chip module, a communication module, etc., and the terminal device can be a chip, a chip module, a communication module, etc., without specific limitations. The method specifically includes the following steps:

[0164] S210. The network device sends first configuration information, where the first configuration information includes the configuration information of the first common uplink signal / channel and / or the configuration information of the first common downlink signal / channel.

[0165] Correspondingly, the terminal device receives the first configuration information.

[0166] It can be seen that this application realizes network configuration of the first common uplink signal / channel and / or the first common downlink signal / channel through the first configuration information. At the same time, when the cell (or network device) is in the first state, basic information is provided to the terminal device through the first common downlink signal / channel and / or the first common uplink signal / channel, so that the terminal device can basically (using the first common uplink signal / channel, the first common downlink signal / channel) camp in the cell.

[0167] Optionally, the first common uplink signal / channel is a reduced common uplink signal / channel. In this way, network configuration of the reduced common uplink signal / channel is realized through the first configuration information. That is to say, the first common uplink signal / channel can include at least one of a reduced PRACH, a reduced MsgA, or a reduced SRS. It can be understood that the first common uplink signal / channel here does not include Msg3, that is, Msg3 here is not reduced.

[0168] Optionally, the first common downlink signal / channel is a reduced common downlink signal / channel. In this way, network configuration of the reduced common downlink signal / channel is realized through the first configuration information. That is to say, the first common downlink signal / channel can include at least one of a reduced SSB, a reduced SIB1, a reduced paging, or a reduced CSI-RS. Optionally, the first configuration information is carried by the system information of the cell.

[0169] Thus, since the first configuration information includes the configuration of the first common uplink signal / channel of the cell, i.e., the configuration of the reduced common uplink signal / channel, it is a more reasonable way to carry the first configuration through the system information of the cell.

[0170] Furthermore, the system information may be SIB1. The first configuration information is relatively important information, and SIB1 is the remaining (outside the MIB) main system information (RMSI). It is reasonable for SIB1 to carry the first configuration information. Since the basic information for obtaining SIB1 comes from the MIB, the information of SIB1 itself may not be required before obtaining SIB1. After obtaining SIB1, the complete information of SIB1 (such as the complete configuration information of the search space set of the physical downlink control channel (PDCCH) of SIB1) can be obtained to reduce the power consumption of the terminal device. Therefore, SIB1 can carry the first configuration information (including the configuration information of the first common uplink signal / channel and the first common downlink signal / channel), and the complete information of SIB1 itself can also be carried by the first configuration information, and the two are not contradictory.

[0171] Furthermore, the system information may be the reduced SIB1. When the terminal user equipment basically (uses the first common uplink signal / channel and the first common downlink signal / channel) camps in the cell, the first configuration information (including the configuration information of the first common uplink signal / channel and the first common downlink signal / channel) is obtained through the reduced SIB1.

[0172] Optionally, the first common downlink signal / channel may include the reduced SSB. In this way, the terminal device can achieve rough downlink synchronization with the cell in the first state by receiving the reduced SSB and measure the cell in the first state; the network device can make the terminal device achieve rough downlink synchronization with the cell in the first state and measure the cell in the first state by sending the reduced SSB.

[0173] Optionally, the first common downlink signal / channel may include the reduced SIB1. In this way, the terminal device can obtain the basic configuration information of the cell in the first state by receiving the reduced SIB1, so as to camp on the cell in the first state; the network device can make the terminal device obtain the basic configuration information of the cell in the first state by sending the reduced SIB1, so as to camp on the cell in the first state.

[0174] Optionally, the first common downlink signal / channel may include a reduced OSI. In this way, the terminal device can obtain more configuration information of the cell in the first state by receiving the reduced OSI, so as to better camp on the cell in the first state; the network device can send the reduced OSI to enable the terminal device to obtain more configuration information of the cell in the first state, so as to better camp on the cell in the first state.

[0175] Optionally, the first common downlink signal / channel may include reduced paging. In this way, the terminal device can be addressed by the network by receiving the reduced paging, so as to better camp on the cell in the first state; the network device can send the reduced paging to enable the terminal device to be addressed by the network, so as to better camp on the cell in the first state.

[0176] Optionally, the first common downlink signal / channel may include reduced CSI-RS. In this way, the terminal device can achieve rough downlink synchronization with the cell in the first state faster through the reduced CSI-RS and wake up faster to receive paging; the network device can send the reduced CSI-RS to enable the terminal to achieve rough downlink synchronization with the cell in the first state faster and wake up faster to receive paging.

[0177] ◆ Apply for on-demand common uplink / downlink signal / channel

[0178] To enable the terminal device to access the cell and ensure that the terminal device can perform data transmission and reception in the cell, the present application introduces an "on-demand common uplink / downlink signal / channel".

[0179] Based on this, the present application may consider that the terminal device applies to the network device for an on-demand common uplink / downlink signal / channel. At the same time, this may also be a process of state transition / state transfer of the cell or the network device.

[0180] That is to say, the terminal device applies to the network device for the cell or the network device to transition from the first state to the second state. This is because only when the cell or the network device transitions from the sleep state to the non-sleep state can the network device send an on-demand common downlink signal / channel in the cell and receive an on-demand common uplink signal / channel. Among them, the second state includes at least one of a turning off state, a non-energy-saving state, a non-sleep state, an active state, or an active period; the transition from the first state to the second state includes at least one of transitioning from the turning off state to the turning on state, from the sleep state to the non-sleep state, from the non-active state to the active state, or from the non-active period to the active period.

[0181] In specific implementation, the present application can implement the required common uplink / downlink signal / channel through a reduced common uplink signal / channel, or implement the state transition of the cell or network device of the application through a reduced common uplink signal / channel.

[0182] For example, in Figure 2 in the process shown, after the terminal device obtains the first configuration information, the terminal device sends a first common uplink signal / channel, and the first common uplink signal / channel is used to apply for the cell to enter the second state from the first state.

[0183] Optionally, the first common uplink signal / channel may include a reduced PRACH. In this way, the terminal device can initiate a 4-step random access by sending a reduced PRACH. Thus, the terminal device not only applies for the cell to enter the second state from the first state but also enters the 4-step random access process, and the terminal device can enter the connected state when the cell enters the second state; the network device can assist the terminal device to complete the 4-step random access by receiving the reduced PRACH, so that the terminal device not only applies for the cell to enter the second state from the first state but also enters the 4-step random access process, and the terminal device can enter the connected state when the cell enters the second state.

[0184] Optionally, the first common uplink signal / channel may include a reduced MsgA. In this way, the terminal device can initiate a 2-step random access by sending a reduced MsgA. Thus, the terminal device not only applies for the cell to enter the second state from the first state but also enters the 2-step random access process, and the terminal device can enter the connected state when the cell enters the second state; the network device can assist the terminal device to complete the 2-step random access by receiving the reduced MsgA, so that the terminal device not only applies for the cell to enter the second state from the first state but also enters the 2-step random access process, and the terminal device can enter the connected state when the cell enters the second state.

[0185] Optionally, the first common uplink signal / channel may include a reduced SRS. In this way, the terminal device can enable the network device to obtain the channel state information (CSI) of the cell in the first state in a timely manner by sending a reduced SRS; the network device can obtain the channel state information of the cell in the first state in a timely manner by receiving the reduced SRS.

[0186] It should be noted that the terminal device reports the measurement result through the first common uplink signal / channel by sending the first common uplink signal / channel, so that the network device can determine whether to convert the cell from the first state to the second state according to the reported measurement result.

[0187] Correspondingly, the network device receives the first common uplink signal / channel, and obtains the reported measurement result through the first common uplink signal / channel, so as to determine whether to switch the cell from the first state to the second state according to the reported measurement result.

[0188] The measurement result may include measurement values, such as reference signal receiving power (RSRP), signal to interference-noise ratio (SINR). The measurement value may be the measurement value of one or more reduced SSBs, or the maximum value of the measurement values of multiple reduced SSBs, or the average (such as linear average) of the measurement values of multiple reduced SSBs.

[0189] The measurement result may include the index of the reduced SSB, such as the index of the reduced SSB recommended by the terminal device, the index of the reduced SSB considered the strongest by the terminal device (such as the reduced SSB with the largest measurement value).

[0190] The measurement result may include the index of the beam, such as the index of the beam recommended by the terminal device, the index of the beam considered the strongest by the terminal device (such as the beam with the largest measurement value). The index of a beam may be for a candidate cell. A beam may be a beam corresponding to multiple reduced SSBs, and the terminal device selects a beam corresponding to (or associated with or mapped to) multiple reduced SSBs through a codebook. Specifically, the indices of multiple reduced SSBs may correspond to the index of a beam. This correspondence may be implemented through a codebook. Through the correspondence between the reduced SSB and the beam, the number of beams can be greater than the number of reduced SSBs, and the terminal device can report beam information finer than the reduced SSB.

[0191] In this way, when the terminal device needs to perform data transmission and reception, the terminal device applies for the cell to enter the second state from the first state through the first common uplink signal / channel, so that the network device can send the on-demand common downlink signal / channel and receive the on-demand common uplink signal / channel in this cell.

[0192] Meanwhile, the network device confirms whether there is a terminal device applying for the cell to enter the second state from the first state by receiving the first common uplink signal / channel, so as to decide whether to send the on-demand common downlink signal / channel and receive the on-demand common uplink signal / channel in this cell according to the current cell situation.

[0193] Optionally, the first state includes at least one of a closed state, an energy-saving state, a sleep state, an inactive state, or an inactive period; the second state includes at least one of an open state, a non-energy-saving state, a non-sleep state, an active state, or an active period.

[0194] ◆ Determine whether the network device receives the first common uplink signal / channel

[0195] It should be noted that after sending the first common uplink signal / channel to the network device, the terminal device needs to know whether the network device has received the first common uplink signal / channel, so as to decide whether to retransmit the first common uplink signal / channel. In this regard, in this application, the network device can directly tell the terminal device. For example, the network device can send a signaling / message to the terminal device to indicate that the first common uplink signal / channel has been received.

[0196] Different from directly associating the end of the PRACH transmission with the start time of the existing RAR window (RAR window) or MsgB window (MsgB window), the cell or the network device needs to switch from the first state to the second state, and the cell or the network device needs to turn on or reset the hardware and / or software, so an additional transition time is required. The configuration parameter of the RAR window can be ra-ResponseWindow. The configuration parameter of the MsgB window can be MsgB-ResponseWindow.

[0197] However, since the network may have situations where the network device fails to send the signaling / message, or the terminal device fails to receive the signaling / message, etc., this will cause the terminal device to be unable to know whether the network device has received the first common uplink signal / channel for a long time, wasting power in vain.

[0198] Optionally, a timer is introduced. When the timer expires, the terminal device determines that the network device has not received the first common uplink signal / channel. This timer can be called the "first timer". The duration of the first timer represents the duration for which the terminal device waits for the network device to respond whether it has received the first common uplink signal / channel. For example, the first common uplink signal / channel here can be a reduced PRACH or a reduced MsgB. For example, the duration of the first timer covers the RAR window or the MsgB window, that is, the end time of the first timer is later than the end time of the RAR window or the MsgB window.

[0199] For example, in Figure 2 In the shown process, when the terminal device finishes sending the first common uplink signal / channel, the terminal device can start the first timer. That is to say, after the last symbol or time slot of the first common uplink signal / channel ends, the terminal device can start the first timer.

[0200] For another example, in Figure 2In the process shown, after the terminal device starts to send the first common uplink signal / channel, the terminal device can start the first timer. That is, after the start of the first symbol or time slot of the first common uplink signal / channel, the terminal device can start the first timer.

[0201] In this way, before the first timer times out or expires, if the terminal device receives a response from the network device, the terminal device stops the first timer. If no response is received when the first timer times out or expires, the terminal device retransmits the first common uplink signal / channel. It can be seen that the terminal device can determine whether the network device has received the first common uplink signal / channel by the timeout of the first timer, so as to decide whether to retransmit the first common uplink signal / channel.

[0202] Optionally, an additional delay is introduced, and the additional delay is added to the start time of the RAR window or the MsgB window, that is, the start time of the RAR window or the MsgB window is postponed by an additional value. If the terminal device does not receive the RAR within the RAR window or the MsgB window, the terminal device determines that the network device has not received the first common uplink signal / channel. This additional delay can be referred to as the "first delay". The first delay can be added to the start time of the RAR window or the MsgB window together with the existing delay, that is, the start time of the RAR window or the MsgB window is postponed by the first delay plus the existing delay. Among them, the existing delay can be timing advance (TA) and / or common propagation delay (such as the k_mac parameter), etc. The first delay is configured by a high-layer parameter or predefined. For example, the first common uplink signal / channel here can be a reduced PRACH or a reduced MsgB.

[0203] After the terminal device finishes sending the first common uplink signal / channel, it waits for the first delay and / or the existing delay, and at the start of the RAR window or the MsgB window, the terminal device starts to listen for the RAR or the MsgB. In this way, before the end of the RAR window or the MsgB window, if the terminal device does not receive a response, the terminal device determines that the network device has not received the first common uplink signal / channel and can retransmit the first common uplink signal / channel.

[0204]

Solution 2

[0205] ◆ Description

[0206] In "Solution 2", after receiving the application for the on-demand common uplink and downlink signal / channel from the terminal device, the network device can respond to the on-demand common uplink and downlink signal / channel applied by the terminal device, so as to inform the terminal device of at least one of the following through this response:

[0207] The network device agrees to transmit on-demand public downlink signals / channels, the network device agrees to receive on-demand public uplink signals / channels, the cell or the network device has switched from the first state to the second state, etc.

[0208] Meanwhile, the terminal device can obtain the configuration of the on-demand public downlink signal / channel transmission and / or the on-demand public uplink signal / channel according to the response, so as to perform the on-demand public downlink signal / channel transmission and / or the on-demand public uplink signal / channel reception according to the configuration.

[0209] Next, the present application will be illustrated by providing another communication method, as Figure 3 shown. Among them, the communication method takes the interaction between the network device and the terminal device as an example to implement the above response and configuration. The method specifically includes the following steps:

[0210] S310: The network device sends indication information.

[0211] Correspondingly, the terminal device receives the indication information.

[0212] S320: The terminal device obtains second configuration information according to the indication information, and the second configuration information includes the configuration information of the second public uplink signal / channel and / or the configuration information of the second public downlink signal / channel.

[0213] It can be seen that the present application can use the indication information to indicate that the network agrees to transmit on-demand public downlink signals / channels, the network agrees to receive on-demand public uplink signals / channels, and the cell or the network device has entered the second state from the first state, so as to respond to the application of the terminal device. Meanwhile, the terminal device can obtain the second configuration information according to the indication information, and implement the network configuration of the second public uplink signal / channel and / or the second public downlink signal / channel through the second configuration information.

[0214] Different from the existing random access process, the cell or the network device needs to switch from the first state to the second state, etc., and the cell-level configuration needs to be reset. For example, the configuration of the first public uplink / downlink signal / channel is changed to the configuration of the second public uplink / downlink signal / channel. Therefore, the problems need to be solved: how the network device indicates the terminal device of the change of the cell-level configuration, how the terminal device obtains the information of the change of the cell-level configuration, and obtains the new configuration of the cell-level.

[0215] Optionally, the second public downlink signal / channel is an on-demand public downlink signal / channel. It can be understood that the existence of the second public downlink signal / channel does not mean the existence of the first public downlink signal / channel. Here, "first" and "second" are only for convenience of description, but do not mean that there is a connection between the two.

[0216] Optionally, the second common downlink signal / channel includes at least one of an on-demand SSB, an on-demand SIB1, an on-demand OSI, on-demand paging, or an on-demand CSI-RS.

[0217] Optionally, the on-demand SSB may be an SSB with a shortened period or an SSB restored to its original period. For example, the period of the on-demand SSB or the default period is 20 milliseconds, and the period of the reduced SSB or the default period is 160 milliseconds. The on-demand SSB may also be an SSB with an increased number of beams or an SSB restored to its original number of beams. For example, within one SSB burst or half-frame, the number of on-demand SSBs (number of beams) is 8, and the number of reduced SSBs is 2. The reduced CSI-RS may be a CSI-RS with a lengthened period or a CSI-RS restored to its original period. For example, the period of the on-demand CSI-RS is 20 milliseconds, and the period of the reduced CSI-RS is 160 milliseconds. The on-demand CSI-RS may also be a CSI-RS with an increased number of beams or a CSI-RS restored to its original number of beams. For example, the on-demand CSI-RS for tracking may be configured as 8 (i.e., the number of beams is 8), and the reduced CSI-RS for tracking may be configured as 2 (i.e., the number of beams is 2).

[0218] Optionally, the on-demand SSB may be a non cell-defining SSB (NCD-SSB). Generally, a connected terminal device may be configured with an SSB, or a non-active terminal device may be configured with an NCD-SSB during small packet transmission. The NCD-SSB is configured through dedicated RRC signaling and can be regarded as a type of on-demand SSB. The network device may also configure the NCD-SSB as the second common downlink signal / channel for a non-connected (idle / non-active) terminal device for random access. In this way, the NCD-SSB used by the connected terminal device can be shared with the non-connected terminal device for random access, and the terminal device that completes random access (entering the connected state) can continue to use the configured NCD-SSB.

[0219] Optionally, the on-demand SIB1 may be an SIB1 with a shortened period or a shortened repetition period, or an SIB1 that resumes its original period or original repetition period. For example, the period of the on-demand SIB1 is 160 milliseconds, and the period of the reduced SIB1 is 1280 milliseconds; alternatively, the repetition period of the on-demand SIB1 is 20 milliseconds, and the repetition period of the reduced SIB1 is 160 milliseconds. The on-demand SIB1 may also be an SIB1 with an increased number of beams, or an SIB1 that resumes its original number of beams. For example, the on-demand SIB1 has a QCL relationship with 8 SSBs (i.e., the number of beams is 8), and the reduced SIB1 has a QCL relationship with 2 SSBs (i.e., the number of beams is 2). The QCL relationship may be an association relationship or a mapping relationship.

[0220] Optionally, the on-demand OSI may be an OSI with a shortened period or a shortened repetition period, or an OSI that resumes its original period or original repetition period. For example, the period of the on-demand OSI is 160 milliseconds, and the period of the reduced OSI is 1280 milliseconds; alternatively, the repetition period of the on-demand OSI is 20 milliseconds, and the repetition period of the reduced OSI is 160 milliseconds. The on-demand OSI may also be an OSI with a reduced number of beams, or an OSI that resumes its original number of beams. For example, the on-demand OSI has a QCL relationship with 8 SSBs (i.e., the number of beams is 8), and the reduced OSI has a QCL relationship with 2 SSBs (i.e., the number of beams is 2). The QCL relationship may be an association relationship or a mapping relationship.

[0221] Optionally, the on-demand paging may be paging with a shortened period, or paging that resumes its original period. For example, the period of the on-demand paging is 160 milliseconds, and the period of the reduced paging is 1280 milliseconds. The on-demand paging may also be paging with an increased number of beams, or paging that resumes its original number of beams. For example, the on-demand paging has a QCL relationship with 8 SSBs (i.e., the number of beams is 8), and the reduced paging has a QCL relationship with 2 SSBs (i.e., the number of beams is 2). The QCL relationship may be an association relationship or a mapping relationship.

[0222] Optionally, the second common downlink signal / channel may include an on-demand SSB. In this way, the terminal device can achieve fine downlink synchronization with the cell in the second state by receiving the on-demand SSB, so as to be able to camp on the cell in the second state; the network device can make the terminal device achieve fine downlink synchronization with the cell in the second state by sending the on-demand SSB, so as to be able to camp on the cell in the second state

[0223] Optionally, the second common downlink signal / channel may include SIB1 on demand. In this way, the terminal device can obtain the basic cell configuration information of the second state by receiving SIB1 on demand, so as to be able to camp on the cell in the second state; the network device can send SIB1 on demand to enable the terminal device to obtain the basic cell configuration information of the second state, so as to be able to camp on the cell in the second state

[0224] Optionally, the second common downlink signal / channel may include OSI on demand. In this way, the terminal device can obtain more configuration information of the second state cell by receiving OSI on demand, so as to be able to camp on the cell in the second state; the network device can send OSI on demand to enable the terminal device to obtain more configuration information of the second state cell, so as to be able to camp on the cell in the second state

[0225] Optionally, the second common downlink signal / channel may include paging on demand. In this way, the terminal device can be addressed by the network more timely by receiving paging on demand, so as to be able to camp on the cell in the second state; the network device can send paging on demand to enable the terminal device to be addressed by the network more timely, so as to be able to camp on the cell in the second state

[0226] Optionally, the second common downlink signal / channel may include CSI-RS on demand. In this way, the terminal device can achieve finer downlink synchronization with the cell in the second state faster by receiving CSI-RS on demand and wake up faster to receive paging; the network device can send CSI-RS on demand to enable the terminal device to achieve finer downlink synchronization with the cell in the second state faster and wake up faster to receive paging.

[0227] Optionally, the second common uplink signal / channel is a common uplink signal / channel on demand. It can be understood that the existence of the second common uplink signal / channel does not mean the existence of the first common uplink signal / channel. The "first" and "second" here are only for convenience of description, but do not mean that there is a connection between the two.

[0228] Optionally, the second common uplink signal / channel includes at least one of PRACH on demand, MsgA on demand, or SRS on demand.

[0229] Optionally, the PRACH on demand may be a PRACH with a shortened period or a PRACH restored to its original period. For example, the period of the PRACH on demand is 20 milliseconds, and the period of the reduced PRACH is 160 milliseconds. The above-mentioned PRACH with a lengthened period may be a RO with a lengthened period, because RO is the time-frequency resource of PRACH.

[0230] Optionally, the on-demand PRACH can also be a PRACH with an increased number of beams, or a PRACH that resumes the original number of beams. For example, the on-demand PRACH is mapped to 8 SSBs (i.e., the number of beams is 8), and the reduced PRACH is mapped to 2 SSBs (i.e., the number of beams is 2). The above-mentioned PRACH with a reduced number of beams can be an RO or preamble with a reduced number of beams, because both RO and preamble can be mapped to SSBs (i.e., mapped to beams). Specifically, the reduced PRACH can also be an RO or preamble with a reduced number of beams. For example, the on-demand RO or preamble is mapped to 8 SSBs (i.e., the number of beams is 8), and the reduced RO or preamble is mapped to 2 SSBs (i.e., the number of beams is 2).

[0231] Optionally, the on-demand MsgA can be a MsgA with a shorter period, or a MsgA that resumes the original period. For example, the period of the on-demand MsgA is 20 milliseconds, and the period of the reduced MsgA is 160 milliseconds. The above-mentioned MsgA with a longer period can be an RO or PUSCH opportunity with a longer period, because both RO and PO are time-frequency resources of the PRACH.

[0232] Optionally, the on-demand MsgA can also be a MsgA with an increased number of beams, or a MsgA that resumes the original number of beams. For example, the on-demand MsgA is mapped to 8 SSBs (i.e., the number of beams is 8), and the reduced MsgA is mapped to 2 SSBs (i.e., the number of beams is 2). The above-mentioned MsgA with a reduced number of beams can be an RO, preamble, or PO with a reduced number of beams, because RO, preamble, and PO can all be mapped to SSBs (i.e., mapped to beams). Specifically, the on-demand PRACH can also be an RO, preamble, or PO with a reduced number of beams. For example, the on-demand RO, preamble, or PO is mapped to 8 SSBs (i.e., the number of beams is 8), and the reduced RO, preamble, or PO is mapped to 2 SSBs (i.e., the number of beams is 2).

[0233] Optionally, the on-demand SRS can be an SRS with a shorter period, or an SRS that resumes the original period. For example, the period of the on-demand SRS is 20 milliseconds, and the period of the reduced SRS is 160 milliseconds.

[0234] Optionally, the on-demand SRS can also be an SRS with a reduced number of beams, or an SRS that resumes the original number of beams. For example, the on-demand SRS can be configured with 8 (i.e., the number of beams is 8), and the reduced SRS for tracking can be configured with 2 (i.e., the number of beams is 2).

[0235] Optionally, the second common uplink signal / channel may include an on-demand PRACH. In this way, the terminal device can initiate a four-step random access by sending an on-demand PRACH, so that the terminal device randomly accesses the cell in the second state and enters the connected state; the network device can assist the terminal device to complete the four-step random access and enter the connected state by receiving the on-demand PRACH.

[0236] Optionally, the second common uplink signal / channel may include an on-demand MsgA. In this way, the terminal device can initiate a two-step random access by sending an on-demand MsgA, so that the terminal device randomly accesses the cell in the second state and enters the connected state; the network device can assist the terminal device to complete the two-step random access and enter the connected state by receiving the on-demand MsgA.

[0237] Optionally, the second common uplink signal / channel may include an on-demand SRS. In this way, the terminal device can enable the network device to obtain the channel state information of the cell in the second state in a timely manner by sending an on-demand SRS; the network device can obtain the channel state information of the cell in the second state in a timely manner by receiving the on-demand SRS.

[0238] It should be noted that the terminal device sends the second common uplink signal / channel and reports the measurement result through the second common uplink signal / channel, so that the network device can assist the terminal device to randomly access the cell in the second state and enter the connected state according to the reported measurement result.

[0239] Correspondingly, the network device receives the second common uplink signal / channel and obtains the measurement result through the second common uplink signal / channel, so as to assist the terminal device to randomly access the cell in the second state and enter the connected state according to the reported measurement result.

[0240] The measurement result may include measurement values, such as reference signal received power, signal-to-interference-plus-noise ratio. The measurement value may be the measurement value of one or more on-demand SSBs, or the maximum value of the measurement values of multiple on-demand SSBs, or the average (such as linear average) of the measurement values of multiple on-demand SSBs.

[0241] The measurement result may include the index of the on-demand SSB, such as the index of the on-demand SSB recommended by the terminal device, the index of the on-demand SSB considered the strongest by the terminal device (such as the on-demand SSB with the largest measurement value).

[0242] The measurement results may include the index of a beam, such as the index of the beam recommended by the terminal device, or the index of the beam that the terminal device considers to be the strongest (e.g., the beam with the largest measurement value). The index of a beam may be for a candidate cell. A beam may be a beam corresponding to multiple on-demand SSBs. The terminal device selects, through a codebook, a beam corresponding to (or associated with or mapped to) multiple on-demand SSBs. Specifically, the indices of multiple on-demand SSBs may correspond to the index of a beam. This correspondence may be implemented through a codebook. Through the correspondence between on-demand SSBs and beams, the number of beams may be made greater than the number of on-demand SSBs, and the terminal device may report beam information that is finer than the on-demand SSBs.

[0243] ◆ Indication information

[0244] The indication information may be carried by different information or instructions respectively, which will be described below.

[0245]

Solution 2-1

[0246] Optionally, the indication information is carried by downlink control information (DCI) or DCI format.

[0247] In this way, the terminal device can quickly obtain the indication information by listening to the PDCCH, and thus quickly obtain the second configuration information.

[0248] Optionally, the DCI or DCI format may scramble the cyclic redundant check (CRC) with a paging radio network temporary identifier (P-RNTI).

[0249] In this way, the terminal device can quickly obtain the indication information by listening to the paging PDCCH, and can regard the process of obtaining the second configuration information as the process of obtaining a system information update (SI update), reducing the system complexity.

[0250] Optionally, the DCI or DCI format scrambles the CRC with a random access-RNTI (RA-RNTI), and one or more bits in the DCI or DCI format are escaped for the indication information.

[0251] In this way, although the DCI or DCI format scrambles the CRC with the RA-RNTI, it is not a true RAR PDCCH because one or more bits have been escaped to carry the indication information.

[0252] Optionally, the second configuration information is carried by the updated system information of the cell. The updated system information includes updated SIB1 and the like.

[0253] In this way, the terminal device can use the acquisition process of system information update (SI update) to obtain the second configuration information. Since the acquisition process of SI update is relatively reliable (using the SI modification period), the acquisition process of the second configuration information is also relatively reliable.

[0254]

Solution 2-2

[0255] Optionally, the indication information is carried by DCI or DCI format.

[0256] In this way, the terminal device can quickly obtain the indication information by listening to the PDCCH, and thus quickly obtain the second configuration information.

[0257] Optionally, DCI or DCI format can scramble the CRC with RA-RNTI, and one or more reserved bits in the DCI or DCI format are used to carry the indication information.

[0258] In this way, the terminal device can quickly obtain the indication information by listening to the RAR PDCCH. Since receiving the RAR PDCCH is a step in the random process (such as the Msg2 receiving step), the terminal device can obtain the second configuration information incidentally during the random access process, simplifying the operation of the terminal device. At this time, the RAR PDCCH is used for both RAR and carrying the indication information.

[0259] Optionally, the second configuration information is carried by the RAR message.

[0260] In this way, the terminal device can obtain the second configuration information incidentally during the random access process without waiting for the SI update process in the above "Solution 2-1", accelerating the acquisition process of the second configuration information.

[0261] Optionally, the second configuration information is carried by the updated system information of the cell included in the RAR message, or by a part of the updated system information of the cell included in the RAR message. The updated system information includes updated SIB1 and the like.

[0262] In this way, the RAR message serves as a container to include the updated system information of the cell or a part of the updated system information of the cell. The second configuration information is still first included in SIB1 and can be sent during the SI update process or in the RAR message, thus obtaining the second configuration information more flexibly.

[0263] Optionally, the DCI or DCI format may scramble the CRC with the MsgB-RNTI, and one or more reserved bits in the DCI or DCI format are used to carry indication information.

[0264] In this way, the terminal device can quickly obtain the indication information by listening to the MsgB PDCCH. Since receiving the MsgB PDCCH is a step in the random process (such as the MsgB receiving step), the terminal device can obtain the second configuration information incidentally during the random access process, simplifying the operation of the terminal device. At this time, the MsgB PDCCH is used for both MsgB and carrying indication information.

[0265] Optionally, the second configuration information is carried by MsgB.

[0266] In this way, the terminal device can obtain the second configuration information incidentally during the random access process without waiting for the SI update process in the above "Solution 2-1", accelerating the acquisition process of the second configuration information.

[0267] Optionally, the second configuration information is carried by the updated system information of the cell included in MsgB, or by the updated system information of a part of the cell included in MsgB. Among them, the updated system information includes the updated SIB1, etc.

[0268] In this way, MsgB serves as a container containing the updated system information of the cell or the updated system information of a part of the cell. The second configuration information is still first included in SIB1 and can be sent during the SI update process or in a message, thus obtaining the second configuration information more flexibly.

[0269]

Solution 2-3

[0270] Optionally, the indication information is carried by SIB1.

[0271] In this way, the terminal device determines whether the SIB1 is a reduced SIB1 or a SIB1 on demand according to the indication information.

[0272] After receiving the SIB1, the terminal device determines whether the SIB1 is a reduced SIB1 or a SIB1 on demand according to the indication information (some other terminal device has sent an application to this cell, and the network device has received the application and converted this cell from the first state to the second state). If it is a reduced SIB1, the terminal device can initiate an application. If it is a SIB1 on demand, the terminal device can initiate random access or continue the random access process without initiating an application.

[0273] The terminal device determines whether the SIB1 belongs to the first common downlink signal / channel or the second common downlink signal / channel according to the indication information.

[0274] After the terminal device receives SIB1, it determines whether the SIB1 belongs to the first common downlink signal / channel or the second common downlink signal / channel according to the indication information (another terminal device has sent an application to this cell, and the network device has received the application and changed the cell from the first state to the second state). If it is a reduced SIB1, the terminal device can initiate an application. If it is an on-demand SIB1, the terminal device can initiate or continue the random access process without initiating an application.

[0275] ◆ Transmit the second common uplink signal / channel

[0276] It should be noted that after the terminal device obtains the configuration information of the second common uplink signal / channel and / or the configuration information of the second common downlink signal / channel according to the indication information, the terminal device can transmit the second common uplink signal / channel and / or receive the second common downlink signal / channel according to the configuration information of the second common uplink signal / channel.

[0277] For example, in Figure 3 In the process shown, if the terminal device receives the indication information, the terminal device can start transmitting the second common uplink signal / channel after the first time point. Here, "start transmitting" means "can transmit", and whether to transmit is determined by the terminal device itself. The first time point can be understood as the time point when the terminal device transmits the second common uplink signal / channel. The second common uplink signal / channel here can be an on-demand PRACH or an on-demand MsgA. That is, the terminal device re-initiates the random access process for the cell in the second state.

[0278] Correspondingly, the network device starts receiving the second common uplink signal / channel after the first time point. Since whether to transmit the second common uplink signal / channel is determined by the terminal device itself, the network device should start blind detecting the second common uplink signal / channel. The first time point can be understood as the time point when the network device starts blind detecting the second common uplink signal / channel.

[0279] In this way, within the time interval between the moment of receiving the indication information and the first time point, the terminal device can have enough time to obtain the second configuration information (such as the second configuration information is carried by an updated SIB1, or by an RAR message, or by a MsgB), and obtain the configuration information of the second common downlink signal / channel according to the second configuration information, so as to re-synchronize with the network device through the second common downlink signal / channel first. After the first time point, the terminal device starts transmitting the second common uplink signal / channel to synchronize with the network device through the second common uplink signal / channel.

[0280] Optionally, the first time point is a time point that is at a first time interval from the end time of the indication information after the end time of the indication information. The first time interval can be understood as the minimum time interval for the terminal device to send the second common uplink signal / channel. The first time interval can also be understood as the minimum time interval for the network device to receive the second common uplink signal / channel. The first time interval can be a time interval configured by a higher layer parameter or a predefined time interval. For example, the first time interval can be one or more second configuration information transmission periods, and / or one or more SSB transmission periods. For example, the second configuration transmission period is the transmission period of the updated system information, and can also be the transmission period of the updated SIB1.

[0281] In this way, within the first time interval, the terminal device has enough time to obtain the second configuration information and perform downlink synchronization with the network device through one or more SSBs.

[0282] ◆ Determine whether the network device has received the first common uplink signal / channel

[0283] Combined with the content in the above "Solution 1", the terminal device will send the first common uplink signal / channel to the network device to apply for the cell to enter the second state from the first state.

[0284] Optionally, after sending the first common uplink signal / channel to the network device, the terminal device can start a first timer. In this way, the terminal device can determine whether the network device has received the first common uplink signal / channel by whether it receives the indication information before the first timer expires or times out.

[0285] For example, in the Figure 3 shown process, if the first timer times out and no indication information is received, the terminal device can re-send the first common uplink signal / channel. Among them, the first timer can be a timer started during the process of the terminal device applying for the cell to enter the second state from the first state.

[0286] In this way, the terminal device can determine whether the network device has received the first common uplink signal / channel by the timeout of the first timer, so as to decide whether to re-send the first common uplink signal / channel.

[0287] Optionally, after the terminal device finishes sending the first common uplink signal / channel, it waits for the first delay and / or the existing delay, and starts to listen for the RAR or MsgB at the start of the RAR window or MsgB window. In this way, before the end of the RAR window or MsgB window, if the terminal device does not receive a response, the terminal device determines that the network device has not received the first common uplink signal / channel and can re-send the first common uplink signal / channel.

[0288] ◆ Send Msg3

[0289] It should be noted that after the terminal device obtains the configuration information of the second common uplink signal / channel according to the indication information, the terminal device can send Msg3 according to the configuration information of the second common uplink signal / channel. Here, the terminal device directly sends Msg3 according to the RAR scheduling. That is to say, the terminal device continues the random access process for the cell in the second state.

[0290] For example, in Figure 3 the process shown, if the terminal device receives the indication information, the terminal device can start sending Msg3 after the second time point.

[0291] Optionally, since the sending of Msg3 is scheduled by the RAR, as long as the start time point of the Msg3 scheduled by the RAR is at or after the second time point, there is no need to introduce a new time point. At this time, the second time point is the start time point of the Msg3 scheduled by the RAR.

[0292] Optionally, the start time point of the Msg3 scheduled by the RAR may not include the time for the network device to send / process the second common uplink and downlink signal / channel, and / or the time for the terminal device to receive / process the configuration of the second common uplink / downlink signal / channel. The start time point of Msg3 needs to add the time for the network device to send / process the second common uplink and downlink signal / channel, and / or the time for the terminal device to receive / process the configuration of the second common uplink / downlink signal / channel. At this time, the second time point is the time point obtained by adding a preset time interval to the start time point of the Msg3 scheduled by the RAR. The preset time interval can be a time interval configured by a high-layer parameter or a predefined time interval. The preset time interval is related to the time for the network device to send / process the second common uplink and downlink signal / channel, and / or the time for the terminal device to receive / process the configuration of the second common uplink / downlink signal / channel.

[0293] Furthermore, the start time point of Msg3 needs to add the existing time interval and the time for the network device to send / process the second common uplink and downlink signal / channel, and / or the time for the terminal device to receive / process the configuration of the second common uplink / downlink signal / channel. The existing time interval is a time interval configured by a high-layer parameter or a predefined time interval, such as cellSpecficKoffse. At this time, the second time point is the time point obtained by adding the existing time interval and the preset time interval to the start time point of the Msg3 scheduled by the RAR. The preset time interval can be a time interval configured by a high-layer parameter or a predefined time interval. The preset time interval is related to the time for the network device to send / process the second common uplink and downlink signal / channel, and / or the time for the terminal device to receive / process the configuration of the second common uplink / downlink signal / channel.

[0294] Correspondingly, after the second time point, the network device starts to receive Msg3.

[0295] In this way, within the time interval between the moment when the indication information is received and the second time point, the terminal device can have sufficient time to obtain the second configuration information (for example, the second configuration information is carried by the updated SIB1, or carried by the RAR message, or carried by MsgB), and obtain the configuration information of the second common downlink signal / channel according to the second configuration information, so as to re-perform downlink synchronization with the network device through the second common downlink signal / channel first. After the second time point, the terminal device starts to send Msg3, so as to perform uplink synchronization with the network device through Msg3.

[0296] Optionally, the second time point is a time point after the end time of the indication information and at a distance of a second time interval from the end time of the indication information. Among them, the second time interval can be a time interval configured by a high-layer parameter or a predefined time interval. In this way, the second time point has nothing to do with the start time point of Msg3 scheduled by the RAR, but is directly configured by high-layer parameters or predefined. For example, the second time interval can be one or more second configuration transmission periods and / or one or more SSB transmission periods. For example, the second configuration transmission period is the transmission period of the updated system information, and can also be the transmission period of the updated SIB1.

[0297] In this way, within the second time interval, the terminal device has sufficient time to obtain the second configuration information and perform downlink synchronization with the network device through one or more SSBs.

[0298] Optionally, the scheduling delay of Msg3 (such as K2 in the protocol) includes the second time interval.

[0299] In this way, when the network device schedules Msg3, it has included the time for the terminal device to obtain the second configuration information and perform downlink synchronization with the network device through one or more SSBs.

[0300] Optionally, the configuration information of Msg3 is carried by the second configuration information.

[0301] In this way, the terminal device obtains the configuration information of Msg3 according to the second configuration information, so as to send Msg3 according to the configuration information of Msg3.

[0302] Optionally, Msg3 carries the SSB index. That is to say, the terminal device can send the SSB index in Msg3.

[0303] In this way, when the mapping of SSB and PRACH / preamble in the first configuration information is different from the mapping of SSB and PRACH / preamble in the second configuration information, the terminal device sends Msg3 to the network device, and tells the network device the SSB index it expects through the SSB index carried in Msg3, so that the network device can adjust the transmission beam direction according to the SSB index expected by the terminal device. Among them, this scenario is applicable when the cell changes from the first state to the second state, and the beam direction of the first uplink and downlink signals / channels changes compared with that of the second uplink and downlink signal channels, for example, from a single beam to multiple beams.

[0304] Optionally, the timing of Msg3 corresponds to one or a group of SSBs. Among them, the timing of Msg3 is used to transmit Msg3.

[0305] In this way, the network device can configure the timing of Msg3 through one or a group of SSBs according to this correspondence, so that the terminal device can send Msg3 according to the timing of Msg3.

[0306] Optionally, the start time point of the timing of Msg3 is obtained through the RAR message.

[0307] In this way, the terminal device can obtain the start time point of the timing of Msg3 through the RAR message. Correspondingly, the network device can send the start time point of the timing of Msg3 through the RAR message.

[0308] ◆Mapping of SSB and PRACH timing (RO) / preamble

[0309] Optionally, the mapping of SSB and PRACH timing / preamble in the second configuration information is the same as the mapping of SSB and PRACH timing / preamble in the first configuration information.

[0310] For example, the terminal device expects the mapping of SSB and PRACH timing / preamble in the first configuration information to be the same as the mapping of SSB and PRACH timing / preamble in the second configuration information. Or, the network device sets the mapping of SSB and PRACH timing / preamble in the first configuration information to be the same as the mapping of SSB and PRACH timing / preamble in the second configuration information.

[0311] In this way, when the cell is in the first state, the terminal device sending the PRACH / preamble can indicate to the network device the beam transmission direction expected by the terminal device. When the cell is in the second state, the terminal device no longer needs to indicate to the network device the base station transmission beam direction it expects. Among them, this scenario is applicable when the cell enters the second state from the first state, and the beam direction of the first uplink and downlink signals / channels does not change compared with that of the second uplink and downlink signal channels, for example, only the period becomes smaller.

[0312] Optionally, the second configuration information does not include the mapping between the SSB and the PRACH occasion / preamble, and the network indicates to the terminal device to use the mapping between the SSB and the PRACH occasion / preamble in the first configuration information.

[0313]

Solution 3

[0314] In the above "Solution 1" and "Solution 2", the terminal device is in the idle state / inactive state. In "Solution 3", the terminal device is in the connected state. Among them, for the terminal device in the connected state, the cell changing from the first state to the second state can be a carrier aggregation (CA) scenario, a dual connectivity (DC) scenario, such as a primary cell (PCell) and a secondary cell (SCell), a multi-carrier scenario, a scenario of an anchor cell and a non-anchor cell, etc.

[0315] In "Solution 3", the on-demand common downlink signal / channel is mainly the on-demand SSB, and the on-demand common uplink signal / channel is mainly the on-demand PRACH / preamble. In addition, after receiving the application of the on-demand common uplink and downlink signals / channels from the terminal device, the network device can respond to the on-demand common uplink and downlink signals / channels applied by the terminal device, so as to inform the terminal device of at least one of the following through this response:

[0316] The network device agrees to send the on-demand common downlink signal / channel, the network device agrees to receive the on-demand common uplink signal / channel, the cell or the network device has changed from the first state to the second state, etc.

[0317] Meanwhile, the terminal device can obtain the configuration of the transmission of the on-demand common downlink signal / channel and / or the on-demand common uplink signal / channel according to this response, so as to transmit and / or receive the on-demand common downlink signal / channel according to this configuration.

[0318] Next, the present application will be illustrated by providing another communication method, as Figure 4 shown. Among them, this communication method takes the interaction between the network device and the terminal device as an example to implement the above response and configuration. The method specifically includes the following steps:

[0319] S410. The network device sends trigger information;

[0320] Correspondingly, the terminal device receives the trigger information.

[0321] Optionally, the triggering information may include second configuration information. The second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel. The second common downlink signal / channel is an on-demand common downlink signal / channel. It can be understood that the existence of the second common downlink signal / channel does not imply the existence of the first common downlink signal / channel. Here, "first" and "second" are only for convenience of description and do not mean there is a connection between the two. The signals / channels included in the first common downlink signal / channel are as described above and will not be elaborated here. The second common uplink signal / channel is an on-demand common uplink signal / channel. It can be understood that the existence of the second common uplink signal / channel does not imply the existence of the first common uplink signal / channel. Here, "first" and "second" are only for convenience of description and do not mean there is a connection between the two. The signals / channels included in the first common uplink signal / channel are as described above and will not be elaborated here.

[0322] In this way, the network device can indicate the configuration information of the SCell through the RRC signaling sent in advance by the PCell, and the terminal device can obtain the configuration information of the SCell through the RRC signaling sent in advance by the PCell, where the configuration information of the SCell includes the second configuration information, so that there is no need for the triggering information to carry the second configuration information.

[0323] S420. The terminal device confirms that the second configuration information becomes effective according to the triggering information.

[0324] Among them, the effectiveness of the second configuration information can be used to indicate that the cell enters the second state from the first state, can be used to indicate that the network device agrees to send the second common downlink signal / channel and / or receive the second common uplink signal / channel, and can be used to indicate that the configuration information of the second common downlink signal / channel and / or the configuration information of the second common uplink signal / channel becomes effective.

[0325] It can be seen that the present application can indicate at least one of the network's agreement to send an on-demand common downlink signal / channel, the network's agreement to receive an on-demand common uplink signal / channel, and the cell or the network device has entered the second state from the first state through the triggering information, so as to respond to the application of the terminal device. In this way, the terminal device sends the second common uplink signal / channel and / or receives the second common downlink signal / channel according to the effectiveness of the second configuration information.

[0326] Optionally, the triggering information is an SCell activation signaling or is carried by the SCell activation signaling.

[0327] In this way, the network device can reuse the SCell activation signaling to respond to the application of the terminal device.

[0328] Optionally, the triggering information is a cell switch signaling or is carried by the cell switch signaling.

[0329] In this way, the network device can respond to the application of the terminal device by reusing the cell switch signaling.

[0330] III. Example description of a communication device

[0331] The above mainly introduces the solution of the embodiment of the present application from the perspective of the method side. It can be understood that in order for the terminal device to implement the above functions, it includes the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0332] The embodiment of the present application can divide the functional units of the terminal device according to the above method examples. For example, each functional unit can be divided corresponding to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of a software program module. It should be noted that the division of units in the embodiment of the present application is illustrative, only a logical function division, and there may be other division methods in actual implementation.

[0333] In the case of adopting an integrated unit, Figure 5 is a block diagram of the functional unit composition of a communication device according to an embodiment of the present application. The communication device 500 includes: a receiving unit 501.

[0334] Optionally, the receiving unit 501 can be a module unit for receiving signals, data, information, sequences, etc., and no specific limitation is made thereto.

[0335] Optionally, the communication device 500 may further include a processing unit. The processing unit may be a processor or a controller, such as a baseband processor, a baseband chip, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It may implement or execute various exemplary logic blocks, modules, and circuits described in connection with the disclosure of this application. The processing unit may also be a combination that implements a computing function, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0336] Optionally, the communication device 500 may further include a transmitting unit. The transmitting unit may be a module unit for transmitting signals, data, information, sequences, etc., and no specific limitation is imposed thereon.

[0337] Optionally, the communication device 500 may further include a storage unit for storing the computer program code or instructions executed by the communication device 500. The storage unit may be a memory.

[0338] Optionally, the communication device 500 may be a chip or a chip module.

[0339] Optionally, the receiving unit 501 may be integrated in other units.

[0340] For example, the receiving unit 501 may be integrated in a communication unit. The communication unit may be a communication interface, a transceiver, a transceiver circuit, etc.

[0341] Optionally, the receiving unit 501 is used to execute any step performed by a network device / chip / chip module / transmitter of a network device, etc. in the above method embodiments. Details are described below.

[0342] In specific implementation, the receiving unit 501 is used to execute the steps involved in the method embodiments in the above "Solution 1" or "Solution 2", and when performing actions such as transmitting, other units may be selectively called to complete the corresponding operations. Since the present application involves multiple solutions, details are described below in each manner.

[0343] In the above "Solution 1", a receiving unit 501 is configured to receive first configuration information, where the first configuration information includes configuration information of a first common uplink signal / channel and / or configuration information of a first common downlink signal / channel.

[0344] It can be seen that in this application, the network configures the first common uplink signal / channel and / or the first common downlink signal / channel through the first configuration information. Meanwhile, when the cell (or network device) is in the first state, basic cell reselection operations are provided to the terminal device through the first common downlink signal / channel and / or the first common uplink signal / channel.

[0345] Optionally, after obtaining the first configuration information, the communication device 500 further includes a sending unit;

[0346] The sending unit is configured to send a first common uplink signal / channel, where the first common uplink signal / channel is used to apply for the cell to enter the second state from the first state.

[0347] Optionally, the communication device 500 further includes a starting unit;

[0348] The starting unit is configured to start a first timer when sending of the first common uplink signal / channel ends; or start the first timer when starting to send the first common uplink signal / channel.

[0349] Optionally, the first state includes at least one of a closed state, an energy-saving state, a sleep state, an inactive state, or an inactive period;

[0350] The second state includes at least one of an open state, a non-energy-saving state, a non-sleep state, an active state, or an active period.

[0351] Optionally, the first common uplink signal / channel is a reduced common uplink signal / channel;

[0352] The first common downlink signal / channel is a reduced common downlink signal / channel.

[0353] Optionally, the reduced common uplink signal / channel includes a common uplink signal / channel with a longer period;

[0354] The reduced common downlink signal / channel includes a common downlink signal / channel with a longer period.

[0355] Optionally, the reduced common uplink signal / channel includes a common uplink signal / channel with a reduced number of beams;

[0356] The reduced common downlink signal / channel includes a common downlink signal / channel with a reduced number of beams.

[0357] Optionally, the common downlink signal / channel includes at least one of the following: SSB, CSI-RS;

[0358] The common uplink signal / channel includes at least one of the following: PRACH, Message A, SRS.

[0359] In the above "Solution 2", the receiving unit 501 is configured to receive indication information and obtain second configuration information according to the indication information, where the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

[0360] It can be seen that the present application can use the indication information to indicate at least one of the network's consent to send a common downlink signal / channel on demand, the network's consent to receive a common uplink signal / channel on demand, and the cell or network device has entered the second state from the first state, so as to respond to the application of the terminal device. At the same time, the terminal device can obtain the second configuration information according to the indication information, and configure the second common uplink signal / channel and / or the second common downlink signal / channel through the second configuration information.

[0361] Optionally, the communication device 500 further includes a sending unit;

[0362] The sending unit is configured to start sending the second common uplink signal / channel after the first time point if the indication information is received.

[0363] Optionally, the communication device 500 further includes a sending unit;

[0364] The sending unit is configured to retransmit the first common uplink signal / channel if the first timer expires and no indication information is received;

[0365] Wherein, the first timer is a timer started during the process of the terminal device applying for the cell to enter the second state from the first state.

[0366] Optionally, the communication device 500 further includes a sending unit;

[0367] The sending unit is configured to start sending Msg3 after the second time point if the indication information is received.

[0368] Optionally, the indication information is carried by downlink control information DCI or DCI format.

[0369] Optionally, the DCI or DCI format is scrambled for cyclic redundancy check CRC by a paging radio network temporary identity P-RNTI.

[0370] Optionally, the DCI or DCI format scrambles the CRC with a random access radio network temporary identity (RA-RNTI), and one or more bits within the DCI or DCI format are escaped to indicate information.

[0371] Optionally, the second configuration information is carried by the updated system information of the cell.

[0372] Optionally, the DCI or DCI format scrambles the CRC with an RA-RNTI, and one or more reserved bits within the DCI or DCI format are used to carry indication information.

[0373] Optionally, the second configuration information is carried by a random access response (RAR) message.

[0374] Optionally, the second configuration information is carried by the updated system information of the cell included in the RAR message, or by a part of the updated system information of the cell included in the RAR message.

[0375] Optionally, the first time point is a time point that is at a first time interval from the end time of the indication information after the end time of the indication information.

[0376] Optionally, the first time interval is one or more second configuration information transmission periods, and / or one or more SSB transmission periods.

[0377] Optionally, the second time point is a time point that is at a second time interval from the end time of the indication information after the end time of the indication information.

[0378] Optionally, the second time interval is one or more second configuration information transmission periods, and / or one or more SSB transmission periods.

[0379] Optionally, the scheduling delay of Msg3 includes the second time interval.

[0380] Optionally, the configuration of Msg3 is carried by the second configuration information.

[0381] Optionally, Msg3 carries an SSB index.

[0382] Optionally, the timing of Msg3 corresponds to one or a group of SSBs.

[0383] Optionally, the start time point of the timing of Msg3 is obtained through the RAR message.

[0384] Optionally, the mapping of the SSB in the second configuration information to the physical random access channel (PRACH) timing / preamble is the same as the mapping of the SSB in the first configuration information to the PRACH timing / preamble; or,

[0385] The second configuration information does not include the mapping between the SSB and the PRACH occasion / preamble, and the network instructs the terminal device to use the mapping between the SSB and the PRACH occasion / preamble in the first configuration information;

[0386] The first configuration information is received before the second configuration information, and the first configuration information includes the configuration information of the first common uplink signal / channel and / or the configuration information of the first common downlink signal / channel. It should be noted that Figure 5 For the specific implementation of each operation in the above embodiments, reference may be made to the description in the method embodiments shown above, and details will not be repeated here.

[0387] IV. Another example description of a communication device

[0388] In the case of adopting an integrated unit, Figure 6 It is a functional unit composition block diagram of another communication device according to an embodiment of the present application. The communication device 600 includes: a receiving unit 601 and a determining unit 602.

[0389] Optionally, the receiving unit 601 may be a module unit for receiving signals, data, information, sequences, etc., and no specific limitation is imposed thereon.

[0390] Optionally, the determining unit 602 may be a module unit for determining signals, data, information, sequences, etc., and no specific limitation is imposed thereon.

[0391] Optionally, the communication device 600 may further include a processing unit. The processing unit may be a processor or a controller, for example, it may be a baseband processor, a baseband chip, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It may implement or execute various exemplary logic blocks, modules and circuits described in connection with the disclosure of the present application. The processing unit may also be a combination for implementing computing functions, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0392] Optionally, the communication device 600 may further include a sending unit. Among them, the sending unit may be a module unit for sending signals, data, information, sequences, etc., and no specific limitation is imposed thereon.

[0393] Optionally, the communication device 600 may further include a storage unit for storing the computer program code or instructions executed by the communication device 600. Among them, the storage unit may be a memory.

[0394] Optionally, the communication device 600 may be a chip or a chip module.

[0395] Optionally, the receiving unit 601 may be integrated into other units. For example, the receiving unit 601 may be integrated into the communication unit. Herein, the communication unit may be a communication interface, a transceiver, a transceiver circuit, etc.

[0396] Optionally, the determining unit 602 may be integrated into other units. For example, the determining unit 602 may be integrated into the processing unit.

[0397] Optionally, the receiving unit 601 and the determining unit 602 are used to perform any step executed by a network device / chip / chip module / transmitter of a network device, etc. in the above method embodiments. Details are described below.

[0398] In specific implementation, the receiving unit 601 and the determining unit 602 are used to perform the steps involved in the method embodiment in "Solution 3", and when performing actions such as sending, other units may be selectively called to complete the corresponding operations.

[0399] The receiving unit 601 is configured to receive trigger information;

[0400] The determining unit 602 is configured to confirm the effectiveness of the second configuration information according to the trigger information, where the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

[0401] It can be seen that the present application can use the trigger information to indicate at least one of the network's consent to send a public downlink signal / channel on demand, the network's consent to receive a public uplink signal / channel on demand, and the cell or network device has entered the second state from the first state, so as to respond to the application of the terminal device. In this way, the terminal device performs the sending of the second common uplink signal / channel and / or the receiving of the second common downlink signal / channel according to the effectiveness of the second configuration information.

[0402] Optionally, the trigger information is carried by at least one of the following signaling: SCell activation signaling, cell transition signaling.

[0403] It should be noted that Figure 6 For the specific implementation of each operation in the above embodiments, reference may be made to the description in the above - shown method embodiments, and details are not elaborated herein.

[0404] V. Another example description of a communication device

[0405] The above mainly introduced the solution of the embodiments of the present application from the perspective of the method side. It can be understood that in order for a network device to implement the above functions, it includes the corresponding hardware structures and / or software modules for executing each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0406] The embodiments of the present application can divide the functional units of the network device according to the above method examples. For example, each functional unit can be divided corresponding to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of a software program module. It should be noted that the division of units in the embodiments of the present application is illustrative, only a logical function division, and there can be other division methods in actual implementation.

[0407] In the case of adopting an integrated unit, Figure 7 is a block diagram of the functional unit composition of a communication device according to an embodiment of the present application. The communication device 700 includes: a sending unit 701.

[0408] Optionally, the sending unit 701 can be a module unit for sending signals, data, information, sequences, etc., and no specific limitation is made thereto.

[0409] Optionally, the communication device 700 may further include a processing unit. The processing unit can be a processor or a controller. For example, it can be a baseband processor, a baseband chip, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute various exemplary logic blocks, modules and circuits described in combination with the disclosure of the present application. The processing unit can also be a combination for implementing a computing function, such as a combination including one or more microprocessors, a combination of a DSP and a microprocessor, etc.

[0410] Optionally, the communication device 700 may further include a receiving unit. Among them, the sending unit can be a module unit for receiving signals, data, information, sequences, etc., and no specific limitation is made thereto.

[0411] Optionally, the communication device 700 may further include a storage unit for storing computer program code or instructions executed by the communication device 700. Among them, the storage unit may be a memory.

[0412] Optionally, the communication device 700 may be a chip or a chip module.

[0413] Optionally, the sending unit 701 may be integrated in other units.

[0414] For example, the sending unit 701 may be integrated in the communication unit. Among them, the communication unit may be a communication interface, a transceiver, a transceiver circuit, etc.

[0415] Optionally, the sending unit 701 is used to execute any step performed by a network device / chip / chip module / transmitter of a network device, etc. in the above method embodiments. The following is a detailed description.

[0416] In specific implementation, the sending unit 701 is used to execute the steps involved in the method embodiments in the above "Solution 1", "Solution 2", or "Solution 3", and when performing actions such as sending, other units can be selectively called to complete the corresponding operations. Since the present application involves multiple solutions, the following will be described in detail from each aspect.

[0417] In the above "Solution 1", the sending unit 701 is used to send first configuration information, and the first configuration information includes configuration information of a first common uplink signal / channel and / or configuration information of a first common downlink signal / channel.

[0418] It can be seen that the present application realizes the network configuration of the first common uplink signal / channel and / or the first common downlink signal / channel through the first configuration information. At the same time, when the cell (or network device) is in the first state, the downlink synchronization between the terminal device and the network device can be maintained through the first common downlink signal / channel, and the uplink synchronization between the terminal device and the network device can be maintained through the first common uplink signal / channel.

[0419] Optionally, after sending the first configuration information, the communication device 700 further includes a receiving unit;

[0420] A starting unit, used to receive a first common uplink signal / channel, and the first common uplink signal / channel requests the cell to enter the second state from the first state.

[0421] Optionally, the first state includes at least one of a closed state, an energy-saving state, a sleep state, an inactive state, or an inactive period;

[0422] The second state includes at least one of an open state, a non-energy-saving state, a non-sleep state, an active state, or an active period.

[0423] Optionally, the first common uplink signal / channel is a reduced common uplink signal / channel;

[0424] The first common downlink signal / channel is a reduced common downlink signal / channel.

[0425] Optionally, the reduced common uplink signal / channel includes a common uplink signal / channel with a longer period;

[0426] The reduced common downlink signal / channel includes a common downlink signal / channel with a longer period.

[0427] Optionally, the reduced common uplink signal / channel includes a common uplink signal / channel with a reduced number of beams;

[0428] The reduced common downlink signal / channel includes a common downlink signal / channel with a reduced number of beams.

[0429] Optionally, the common downlink signal / channel includes at least one of the following: SSB, CSI-RS;

[0430] The common uplink signal / channel includes at least one of the following: PRACH, Message A, SRS.

[0431] In the above "Solution 2", the sending unit 701 is configured to send indication information for obtaining second configuration information, where the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

[0432] It can be seen that the present application can use the indication information to indicate at least one of the network's consent to send the on-demand common downlink signal / channel, the network's consent to receive the on-demand common uplink signal / channel, and the cell or network device has entered the second state from the first state, so as to respond to the request of the terminal device. At the same time, the terminal device can obtain the second configuration information according to the indication information, and configure the second common uplink signal / channel and / or the second common downlink signal / channel through the second configuration information.

[0433] Optionally, the communication device 700 further includes a receiving unit;

[0434] The receiving unit is configured to start receiving the second common uplink signal / channel after the first time point.

[0435] Optionally, the communication device 700 further includes a receiving unit;

[0436] The receiving unit is configured to start receiving Msg3 after the second time point.

[0437] Optionally, the indication information is carried by DCI or DCI format.

[0438] Optionally, the DCI or DCI format is scrambled with a paging radio network temporary identity (P-RNTI) for cyclic redundancy check (CRC).

[0439] Optionally, the DCI or DCI format is scrambled with a random access radio network temporary identity (RA-RNTI) for CRC, and one or more bits in the DCI or DCI format are escaped to indicate information.

[0440] Optionally, the second configuration information is carried by updated system information of the cell.

[0441] Optionally, the DCI or DCI format is scrambled with an RA-RNTI for CRC, and one or more reserved bits in the DCI or DCI format are used to carry indication information.

[0442] Optionally, the second configuration information is carried by a random access response (RAR) message.

[0443] Optionally, the second configuration information is carried by the updated system information of the cell included in the RAR message, or by the partial updated system information of the cell included in the RAR message.

[0444] Optionally, the first time point is a time point that is at a first time interval from the end time of the indication information after the end time of the indication information.

[0445] Optionally, the first time interval is one or more second configuration information transmission periods, and / or one or more SSB transmission periods.

[0446] Optionally, the second time point is a time point that is at a second time interval from the end time of the indication information after the end time of the indication information.

[0447] Optionally, the second time interval is one or more second configuration information transmission periods, and / or one or more SSB transmission periods.

[0448] Optionally, the scheduling delay of Msg3 includes the second time interval.

[0449] Optionally, the configuration of Msg3 is carried by the second configuration information.

[0450] Optionally, Msg3 carries an SSB index.

[0451] Optionally, the timing of Msg3 corresponds to one or a group of SSBs.

[0452] Optionally, the start time point of the timing of Msg3 is obtained through the RAR message.

[0453] Optionally, the mapping between the SSB and the physical random access channel (PRACH) timing / preamble in the second configuration information is the same as the mapping between the SSB and the PRACH timing / preamble in the first configuration information; or,

[0454] The second configuration information does not include the mapping between the SSB and the PRACH timing / preamble, and the network instructs the terminal device to use the mapping between the SSB and the PRACH timing / preamble in the first configuration information;

[0455] The first configuration information is received before the second configuration information, and the first configuration information includes the configuration information of the first common uplink signal / channel and / or the configuration information of the first common downlink signal / channel.

[0456] In the above "Solution 3", the sending unit 701 is configured to send trigger information for determining the effectiveness of the second configuration information, and the second configuration information includes the configuration information of the second common uplink signal / channel and / or the configuration information of the second common downlink signal / channel.

[0457] It can be seen that the present application can use the trigger information to indicate that the network agrees to send the on-demand common downlink signal / channel, the network agrees to receive the on-demand common uplink signal / channel, and / or the cell or network device has entered the second state from the first state, so as to respond to the application of the terminal device. In this way, the terminal device sends and / or receives the second common uplink signal / channel according to the effectiveness of the second configuration information.

[0458] Optionally, the trigger information is carried by at least one of the following signaling: SCell activation signaling, cell transition signaling.

[0459] It should be noted that Figure 7 The specific implementation of each operation in the above embodiments can be found in the description of the method embodiments shown above, and will not be elaborated here.

[0460] VI. Example description of a terminal device

[0461] Please refer to Figure 8 , Figure 8 which is a schematic structural diagram of a network device according to an embodiment of the present application. Among them, the terminal device 800 may include a processor 810, a memory 820, and a communication bus for connecting the processor 810 and the memory 820.

[0462] Optionally, the memory 820 includes, but is not limited to, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a compact disc read-only memory (CD-ROM). The memory 820 is used to store the program code executed by the terminal device 800 and the transmitted data.

[0463] Optionally, the terminal device 800 further includes a communication interface, which is used to receive and send data.

[0464] Optionally, the processor 810 may be one or more central processing units (CPUs). When the processor 810 is a central processing unit (CPU), the central processing unit (CPU) may be a single-core central processing unit (CPU) or a multi-core central processing unit (CPU).

[0465] Optionally, the processor 810 may be a baseband chip, a chip, a central processing unit (CPU), a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof.

[0466] In specific implementation, the processor 810 in the terminal device 800 is used to execute the computer program or instruction 821 stored in the memory 820, and execute the corresponding steps of the method embodiment shown above, which will not be elaborated here.

[0467] In the above "Solution 1", the processor 810 in the terminal device 800 is used to execute the computer program or instruction 821 stored in the memory 820 to perform the following steps:

[0468] Receive first configuration information, where the first configuration information includes the configuration information of the first common uplink signal / channel and / or the configuration information of the first common downlink signal / channel.

[0469] It can be seen that in this application, the network configures the first common uplink signal / channel and / or the first common downlink signal / channel through the first configuration information. At the same time, when the cell (or network device) is in the first state, basic cell reselection operations are provided to the terminal device through the first common downlink signal / channel and / or the first common uplink signal / channel.

[0470] In the above "Solution 2", the processor 810 in the terminal device 800 is used to execute the computer program or instruction 821 stored in the memory 820 to perform the following steps:

[0471] Receive indication information, and obtain second configuration information according to the indication information, where the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

[0472] It can be seen that in this application, the indication information can be used to indicate at least one of the network's consent to send on-demand common downlink signals / channels, the network's consent to receive on-demand common uplink signals / channels, and the cell or network device has entered the second state from the first state, so as to respond to the application of the terminal device. At the same time, the terminal device can obtain the second configuration information according to the indication information, and configure the second common uplink signal / channel and / or the second common downlink signal / channel through the second configuration information.

[0473] In the above "Solution 3", the processor 810 in the terminal device 800 is used to execute the computer program or instruction 821 stored in the memory 820 to perform the following steps:

[0474] Receive trigger information;

[0475] Confirm that the second configuration information takes effect according to the trigger information, where the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

[0476] It can be seen that in this application, the trigger information can be used to indicate at least one of the network's consent to send on-demand common downlink signals / channels, the network's consent to receive on-demand common uplink signals / channels, and the cell or network device has entered the second state from the first state, so as to respond to the application of the terminal device. In this way, the terminal device sends the second common uplink signal / channel and / or receives the second common downlink signal / channel according to the effectiveness of the second configuration information.

[0477] VII. Example description of a network device

[0478] Please refer to Figure 9 , Figure 9 which is a schematic structural diagram of a network device according to an embodiment of this application. Among them, the network device 900 may include a processor 910, a memory 920, and a communication bus for connecting the processor 910 and the memory 920.

[0479] Optionally, the memory 920 includes but is not limited to a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), or a compact disc read-only memory (CD-ROM). The memory 920 is used to store the program code executed by the network device 900 and the data transmitted.

[0480] Optionally, the network device 900 further includes a communication interface for receiving and sending data.

[0481] Optionally, the processor 910 may be one or more central processing units (CPUs). When the processor 910 is a central processing unit (CPU), the central processing unit (CPU) may be a single-core central processing unit (CPU) or a multi-core central processing unit (CPU).

[0482] Optionally, the processor 910 may be a baseband chip, a chip, a central processing unit (CPU), a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof.

[0483] In specific implementation, the processor 910 in the network device 900 is used to execute the computer program or instruction 921 stored in the memory 920, and execute the corresponding steps of the method embodiment shown above, which will not be elaborated here.

[0484] In the above "Solution 1", the processor 910 in the network device 900 is used to execute the computer program or instruction 921 stored in the memory 920 to perform the following steps:

[0485] Send first configuration information, where the first configuration information includes configuration information of a first common uplink signal / channel and / or configuration information of a first common downlink signal / channel.

[0486] It can be seen that in this application, the network configures the first common uplink signal / channel and / or the first common downlink signal / channel through the first configuration information. At the same time, when the cell (or network device) is in the first state, the downlink synchronization between the terminal device and the network device can be maintained through the first common downlink signal / channel, and the uplink synchronization between the terminal device and the network device can be maintained through the first common uplink signal / channel.

[0487] In the above "Solution 2", the processor 910 in the network device 900 is used to execute the computer program or instruction 921 stored in the memory 920 to perform the following steps:

[0488] Send indication information, where the indication information is used to obtain second configuration information, and the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

[0489] It can be seen that the present application can indicate at least one of the network's consent to send on-demand public downlink signals / channels, the network's consent to receive on-demand public uplink signals / channels, and the cell or network device has entered the second state from the first state through indication information, so as to respond to the application of the terminal device. At the same time, the terminal device can obtain the second configuration information according to the indication information, and implement the network configuration of the second public uplink signal / channel and / or the second public downlink signal / channel through the second configuration information.

[0490] In the above "Solution 3", the processor 910 in the network device 900 is used to execute the computer program or instruction 921 stored in the memory 920 to perform the following steps:

[0491] Send trigger information, where the trigger information is used to determine the effectiveness of the second configuration information, and the second configuration information includes the configuration information of the second public uplink signal / channel and / or the configuration information of the second public downlink signal / channel.

[0492] It can be seen that the present application can indicate at least one of the network's consent to send on-demand public downlink signals / channels, the network's consent to receive on-demand public uplink signals / channels, and the cell or network device has entered the second state from the first state through trigger information, so as to respond to the application of the terminal device. In this way, the terminal device performs the sending of the second public uplink signal / channel and / or the receiving of the second public downlink signal / channel according to the effectiveness of the second configuration information.

[0493] VIII. Other related example descriptions

[0494] Optionally, the above method embodiments can be applied to a network device or in a network device. That is to say, the execution subject of the above method embodiments can be a network device, a chip, a chip module, a module, a transmitter of a network device, etc., and no specific limitation is made thereto.

[0495] The embodiment of the present application also provides a chip, including a processor, a memory, and a computer program or instruction stored on the memory. The processor executes the computer program or instruction to implement the steps described in the above method embodiments.

[0496] The embodiment of the present application also provides a chip module, including a transceiver component and a chip. The chip includes a processor, a memory, and a computer program or instruction stored on the memory. The processor executes the computer program or instruction to implement the steps described in the above method embodiments.

[0497] The embodiment of the present application also provides a computer-readable storage medium, which stores a computer program or instruction, and when the computer program or instruction is executed, it implements the steps described in the above method embodiments.

[0498] The embodiments of the present application also provide a computer program product, including a computer program or instructions, which, when executed, implement the steps described in the above method embodiments.

[0499] The embodiments of the present application also provide a communication system, including the above network device and terminal device.

[0500] It should be noted that, for the above embodiments, for the sake of simple description, they are all expressed as a series of action combinations. Those skilled in the art should know that the present application is not limited by the described action sequence, because some steps in the embodiments of the present application can be performed in other sequences or simultaneously. In addition, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions, steps, modules or units involved are not necessarily essential to the embodiments of the present application.

[0501] In the above embodiments, the embodiments of the present application focus on different aspects in the description of each embodiment. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0502] The steps of the method or algorithm described in the embodiments of the present application can be implemented in a hardware manner or by a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in a RAM, flash memory, ROM, EPROM, electrically erasable programmable read-only memory (EEPROM), register, hard disk, removable hard disk, CD-ROM, or any other form of storage medium well known in the art. An exemplary storage medium is coupled to the processor, so that the processor can read information from the storage medium and write information to the storage medium. Of course, 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 terminal device or a management device. Of course, the processor and the storage medium can also exist as discrete components in a terminal device or a management device.

[0503] Those skilled in the art should be able to realize that in one or more of the above examples, the functions described in the embodiments of the present application can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using 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 instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from a website, computer, server, or data center to another website, computer, server, or data center in a wired manner (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wirelessly (such as infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium can be a magnetic medium (such as a floppy disk, hard disk, magnetic tape), an optical medium (such as a digital video disc (DVD)), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0504] Each device and product described in the above embodiments, and each module / unit included therein, can be a software module / unit, a hardware module / unit, or can also be partially a software module / unit and partially a hardware module / unit. For example, for each device and product applied to or integrated into a chip, each module / unit included therein can be implemented in the form of hardware such as circuits, or at least some of the modules / units can be implemented in the form of a software program that runs on a processor integrated inside the chip, and the remaining (if any) part of the modules / units can be implemented in the form of hardware such as circuits; for each device and product applied to or integrated into a chip module, each module / unit included therein can be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component (such as a chip, a circuit module, etc.) or different components of the chip module, or at least some of the modules / units can be implemented in the form of a software program that runs on a processor integrated inside the chip module, and the remaining (if any) part of the modules / units can be implemented in the form of hardware such as circuits; for each device and product applied to or integrated into a terminal device, each module / unit included therein can be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component (such as a chip, a circuit module, etc.) or different components inside the terminal device, or at least some of the modules / units can be implemented in the form of a software program that runs on a processor integrated inside the terminal device, and the remaining (if any) part of the modules / units can be implemented in the form of hardware such as circuits.

[0505] The specific embodiments described above further elaborate on the objectives, technical solutions, and beneficial effects of the embodiments of the present application. It should be understood that the above description is only the specific embodiments of the embodiments of the present application and is not used to limit the protection scope of the embodiments of the present application. Any modifications, equivalent replacements, improvements, etc. made on the basis of the technical solutions of the embodiments of the present application shall be included in the protection scope of the embodiments of the present application.

Claims

1. A communication method, characterized in that, it includes: receiving first configuration information, where the first configuration information includes configuration information of a first common uplink signal / channel and / or configuration information of a first common downlink signal / channel.

2. The method according to claim 1, characterized in that, after obtaining the first configuration information, it further includes: sending the first common uplink signal / channel, where the first common uplink signal / channel is used to apply for the cell to enter a second state from a first state.

3. The method according to claim 2, characterized in that, it further includes: when ending the sending of the first common uplink signal / channel, starting a first timer; or, when starting to send the first common uplink signal / channel, starting a first timer.

4. A communication method, characterized in that, it includes: sending first configuration information, where the first configuration information includes configuration information of a first common uplink signal / channel and / or configuration information of a first common downlink signal / channel.

5. The method according to claim 4, characterized in that, after sending the first configuration information, it further includes: receiving the first common uplink signal / channel, where the first common uplink signal / channel applies for the cell to enter a second state from a first state.

6. The method according to claim 2 or 5, characterized in that, the first state includes at least one of a closed state, an energy-saving state, a sleep state, an inactive state, or an inactive period; the second state includes at least one of an open state, a non-energy-saving state, a non-sleep state, an active state, or an active period.

7. The method according to any one of claims 1-6, characterized in that, the first common uplink signal / channel is a reduced common uplink signal / channel; the first common downlink signal / channel is a reduced common downlink signal / channel.

8. The method according to claim 7, characterized in that, the common downlink signal / channel includes at least one of the following: Synchronization Signal Block (SSB), Channel State Information Reference Signal (CSI-RS); the common uplink signal / channel includes at least one of the following: Physical Random Access Channel (PRACH), Message A, Sounding Reference Signal (SRS).

9. A communication method, characterized in that, it includes: receiving indication information; obtaining second configuration information according to the indication information, where the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

10. The method according to claim 9, characterized in that, it further includes: if the indication information is received, then after a first time point, starting to send the second common uplink signal / channel.

11. The method according to claim 9, characterized in that, it further includes: if the first timer expires and the indication information is not received, then resending the first common uplink signal / channel; wherein, the first timer is a timer started during the process of the terminal device applying for the cell to enter a second state from a first state.

12. The method according to claim 9, characterized in that, it further includes: If the indication information is received, after the second time point, start to send Message 3 (Msg3).

13. A communication method, characterized in that, it includes: Send indication information, where the indication information is used to obtain second configuration information, and the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

14. The method according to claim 13, characterized in that, it further includes: After the first time point, start to receive the second common uplink signal / channel.

15. The method according to claim 13, characterized in that, it further includes: After the second time point, start to receive Msg3.

16. The method according to any one of claims 13-15, characterized in that, the indication information is carried by downlink control information (DCI) or a DCI format.

17. The method according to claim 16, characterized in that, the DCI or DCI format scrambles the cyclic redundancy check (CRC) with a paging radio network temporary identifier (P-RNTI).

18. The method according to claim 16, characterized in that, the DCI or DCI format scrambles the CRC with a random access radio network temporary identifier (RA-RNTI), and one or more bits in the DCI or DCI format are escaped for the indication information.

19. The method according to any one of claims 13-15, characterized in that, the DCI or DCI format scrambles the CRC with an RA-RNTI, and one or more reserved bits in the DCI or DCI format are used to carry the indication information.

20. The method according to claim 10 or 14, characterized in that, the first time point is a time point at a first time interval from the end time of the indication information after the end time of the indication information.

21. The method according to claim 20, characterized in that, the first time interval is one or more second configuration information transmission periods, and / or one or more synchronization signal block (SSB) transmission periods.

22. The method according to claim 12 or 15, characterized in that, the second time point is a time point at a second time interval from the end time of the indication information after the end time of the indication information.

23. The method according to claim 22, characterized in that, the second time interval is one or more second configuration information transmission periods, and / or one or more SSB transmission periods.

24. The method according to claim 22 or 23, characterized in that, the scheduling delay of Msg3 includes the second time interval.

25. The method according to claim 12 or 15, characterized in that, the configuration of Msg3 is carried by the second configuration information.

26. The method according to claim 12, 15 or 25, characterized in that, Msg3 carries an SSB index.

27. The method according to any one of claims 12, 15, 25-26, characterized in that, the timing of Msg3 corresponds to one or a group of SSBs.

28. The method according to any one of claims 12, 15, 25 - 27, characterized in that, the start time point of the timing of the Msg3 is obtained through a RAR message.

29. A communication method, characterized in that, comprising: receiving trigger information; confirming the effectiveness of second configuration information according to the trigger information, where the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

30. A communication method, characterized in that, comprising: sending trigger information, where the trigger information is used to confirm the effectiveness of second configuration information, and the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

31. The method according to claim 29 or 30, characterized in that, the trigger information is carried by at least one of the following signaling: secondary cell (SCell) activation signaling, cell handover signaling.

32. A communication device, characterized in that, comprising: a receiving unit, configured to receive first configuration information, where the first configuration information includes configuration information of a first common uplink signal / channel and / or configuration information of a first common downlink signal / channel.

33. A communication device, characterized in that, comprising: a sending unit, configured to send first configuration information, where the first configuration information includes configuration information of a first common uplink signal / channel and / or configuration information of a first common downlink signal / channel.

34. A communication device, characterized in that, comprising: a receiving unit, configured to receive indication information and obtain second configuration information according to the indication information, where the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

35. A communication device, characterized in that, comprising: a sending unit, configured to send indication information, where the indication information is used to obtain second configuration information, and the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

36. A communication device, characterized in that, comprising: a receiving unit, configured to receive trigger information; a determining unit, configured to confirm the effectiveness of second configuration information according to the trigger information, where the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

37. A communication device, characterized in that, comprising: a sending unit, configured to send trigger information, where the trigger information is used to confirm the effectiveness of second configuration information, and the second configuration information includes configuration information of a second common uplink signal / channel and / or configuration information of a second common downlink signal / channel.

38. A terminal device includes a processor, a memory, and a computer program or instruction stored in the memory, characterized in that, the processor executes the computer program or instruction to implement the steps of the method according to any one of claims 1 - 3, 6 - 12, 16 - 28, 29, 31.

39. A network device, comprising a processor, a memory, and a computer program or instructions stored on the memory, characterized in that, the processor executes the computer program or instructions to implement the steps of the method according to any one of claims 4-5, 6-8, 13-28, 30-31.

40. A chip, comprising a processor and a communication interface, characterized in that, the processor executes the steps of the method according to any one of claims 1-38.

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