Signal transmission method and apparatus, configuration method and apparatus, cell, and terminal

Abstract

Provided in the present disclosure are a signal transmission method and apparatus, a configuration method and apparatus, a cell, and a terminal. The signal transmission method comprises: a first cell sending a first signal to a first terminal, wherein the first signal comprises at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal and a tracking reference signal, and the first cell comprises: a secondary cell in an energy-saving state, and / or, at least one secondary cell in a first secondary cell group in an energy-saving state.

Description

Signal transmission method, configuration method, device, cell and terminal

[0001] This disclosure claims priority to the Chinese patent application filed with the China Patent Office on April 3, 2024, with application number 202410400461.1 and application name “Signal Transmission Method, Configuration Method, Device, Cell and Terminal”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to the field of communication technology, and in particular to a signal transmission method, configuration method, device, cell, and terminal. Background Art

[0003] In the 5th Generation Mobile Communication Technology (5G) New Radio Access (NR) system, for a terminal using carrier aggregation and in a Radio Resource Control (RRC) connected state, its serving cells include a primary cell (Pcell) and a secondary cell (Scell). The terminal's Pcell continuously transmits synchronization signals and broadcast channel blocks (SSBs) to synchronize the terminal with the Pcell and establish a data communication link. Since there are many Scells, to save energy, the base station will enable some Scells to transmit SSBs so that the terminal can receive services from these Scells. For other Scells, the base station will put them into a power-saving state, in which they do not transmit SSBs. These power-saving Scells are activated when they are needed to provide data transmission services to the terminal.

[0004] As shown in Figure 1, for terminal 1 that uses carrier aggregation and is in the RRC connected state, its serving cells include the primary cell Pcell and the secondary cell Scell1, while Scell2 is in the energy-saving state (indicated by a dotted line). Scell2 cannot provide services for terminal 1, and it will not send any downlink signals to achieve the purpose of network energy saving.

[0005] Scells in energy-saving mode do not send SSBs (SSB-less Scells) or other downlink signals, which can indeed benefit network energy conservation. However, these Scells in energy-saving mode become unknown to terminals, and terminals cannot measure their signal strength. This makes it difficult for terminals to select the appropriate energy-saving cell for activation when they need to provide data transmission services. Summary of the Invention

[0006] The present disclosure aims to provide a signal transmission method, configuration method, device, cell and terminal to solve the problem in the related art that the terminal cannot measure the signal strength of the secondary cell in the energy-saving state, resulting in the inability to select a suitable secondary cell for activation.

[0007] In order to solve the above problems, the present disclosure provides a signal transmission method, the method comprising:

[0008] The first cell sends a first signal to the first terminal, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal;

[0009] The first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

[0010] In some embodiments, the modulation signal includes at least one of the following:

[0011] On-off keying OOK signal;

[0012] Amplitude shift keying ASK signal;

[0013] Frequency shift keying FSK signal;

[0014] Phase Shift Keying PSK signal.

[0015] In some embodiments, when the first signal comprises a single-level modulation signal,

[0016] The single-level modulated signal carries a first physical cell identifier PCI; and / or the single-level modulated signal occupies at least one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

[0017] In some embodiments, when the first signal includes: a first-level modulation signal and a second-level modulation signal,

[0018] The first-level modulated signal carries the first part of the information of the second PCI, and the second-level modulated signal carries the second part of the information of the second PCI;

[0019] and / or,

[0020] The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

[0021] In some embodiments, when the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511.

[0022] In some embodiments, when the first signal includes the primary synchronization signal and the secondary synchronization signal,

[0023] The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain;

[0024] and / or,

[0025] The primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain.

[0026] In some embodiments, the first signal includes at least one of a periodic signal, a semi-persistent signal, and a non-periodic signal.

[0027] In some embodiments, before the first cell sends the first signal to the first terminal, the method further includes:

[0028] The first cell receives a first command sent by a primary cell, where the first command is used to trigger the first cell to send the first signal.

[0029] In some embodiments, before the first cell sends the first signal to the first terminal, the method further includes:

[0030] The first cell receives first configuration information sent by the primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0031] The first cell sending a first signal to the first terminal includes:

[0032] The first cell sends the first signal on the time domain resources and the frequency domain resources and / or sends the first signal within the first time window according to the first configuration information.

[0033] In some embodiments, before the first cell sends the first signal to the first terminal, the method further includes:

[0034] The first cell determines, by way of example, time domain resources and frequency domain resources of the first signal, and sends, to the primary cell, first indication information, where the first indication information is used to indicate the time domain resources and frequency domain resources of the first signal;

[0035] The first cell sending a first signal to the first terminal includes:

[0036] The first cell sends the first signal on the time domain resources and frequency domain resources.

[0037] In some embodiments, the first cell sending the first signal within the first time window includes:

[0038] Determining, by the first cell, a timing for sending the first signal within the first time window according to the PCI of the first cell;

[0039] The first cell sends the first signal at the determined sending timing.

[0040] The present disclosure also provides a signal transmission method, the method comprising:

[0041] The first terminal receives a first signal sent by a first cell, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state;

[0042] The first terminal sends a second signal to the second cell based on the first signal; the second cell includes at least one of the following: a main cell, the first cell, and a secondary cell in the first secondary cell group; the second signal is used to trigger the secondary cell to be activated to send a synchronization signal and a broadcast channel block SSB, and the secondary cell to be activated includes: the first cell and / or the secondary cell in the first secondary cell group.

[0043] In some embodiments, the modulation signal includes at least one of the following:

[0044] On-off keying OOK signal;

[0045] Amplitude shift keying ASK signal;

[0046] Frequency shift keying FSK signal;

[0047] Phase Shift Keying PSK signal.

[0048] In some embodiments, when the first signal comprises a single-level modulation signal,

[0049] The single-level modulated signal carries a first physical cell identifier PCI; and / or the single-level modulated signal occupies at least one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

[0050] In some embodiments, when the first signal includes: a first-level modulation signal and a second-level modulation signal,

[0051] The first-level modulated signal carries the first part of the information of the second PCI, and the second-level modulated signal carries the second part of the information of the second PCI;

[0052] and / or,

[0053] The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

[0054] In some embodiments, when the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511.

[0055] In some embodiments, when the first signal includes the primary synchronization signal and the secondary synchronization signal,

[0056] The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain;

[0057] and / or,

[0058] The primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain.

[0059] In some embodiments, the first signal includes at least one of a periodic signal, a semi-persistent signal, and a non-periodic signal.

[0060] In some embodiments, before the first terminal receives the first signal sent by the first cell, the method further includes:

[0061] The first terminal receives first configuration information sent by a primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0062] The first terminal receiving a first signal sent by a first cell includes:

[0063] The first terminal receives the first signal on the time domain resources and the frequency domain resources and / or receives the first signal within the first time window according to the first configuration information.

[0064] In some embodiments, before the first terminal sends the second signal to the second cell according to the first signal, the method further includes:

[0065] The first terminal receives second configuration information sent by the primary cell, where the second configuration information includes: a second time window of the second signal;

[0066] The first terminal sending a second signal to a second cell according to the first signal includes:

[0067] The first terminal sends the second signal to the second cell within the second time window based on the first signal.

[0068] In some embodiments, the first terminal sending the second signal to the second cell within the second time window according to the first signal includes:

[0069] Determining, by the first terminal, a physical cell identifier PCI carried by the first signal according to the first signal;

[0070] Determining, by the first terminal, a timing for sending the second signal within the second time window according to the PCI;

[0071] The first terminal sends the second signal at the determined sending timing.

[0072] In some embodiments, when the first terminal receives multiple first signals, the method further includes:

[0073] The first terminal determines at least one secondary cell to be activated according to the multiple first signals.

[0074] In some embodiments, the second signal carries SSB information corresponding to the target beam direction.

[0075] In some embodiments, the first terminal sending the second signal to the second cell includes:

[0076] The first terminal sends the second signal to the second cell according to the downlink measurement result; or

[0077] The first terminal sends the second signal to the second cell according to the instruction of the primary cell; or

[0078] The first terminal sends the second signal to the second cell according to historical data; or

[0079] The first terminal sends the second signal to the second cell by broadcasting or multicasting.

[0080] The present disclosure also provides a configuration method, the method comprising:

[0081] The primary cell sends first configuration information to the first cell and the first terminal, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0082] In some embodiments, the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

[0083] In some embodiments, the method further comprises:

[0084] The primary cell sends a first command to the first cell, where the first command is used to trigger the first cell to send the first signal.

[0085] In some embodiments, the method further comprises:

[0086] The primary cell determines whether to send the first command based on first information; in some embodiments, the first information includes at least one of the following: radio link quality information, uplink reference signal strength information, and cell service load information.

[0087] In some embodiments, the method further comprises:

[0088] Determining, by the primary cell, the first configuration information;

[0089] and / or,

[0090] The primary cell receives first indication information sent by the first cell, where the first indication information is used to indicate time domain resources and frequency domain resources of the first signal.

[0091] In some embodiments, the method further comprises:

[0092] The primary cell sends second configuration information to the first terminal and the second cell, where the second configuration information includes: a second time window of the second signal;

[0093] In some embodiments, the second cell includes at least one of the following: a primary cell, the first cell, and a secondary cell in the first secondary cell group.

[0094] The embodiment of the present disclosure further provides a first cell, including a memory, a transceiver, and a processor:

[0095] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0096] Sending a first signal to a first terminal, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal;

[0097] The first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

[0098] In some embodiments, the modulation signal includes at least one of the following:

[0099] On-off keying OOK signal;

[0100] Amplitude shift keying ASK signal;

[0101] Frequency shift keying FSK signal;

[0102] Phase Shift Keying PSK signal.

[0103] In some embodiments, when the first signal comprises a single-level modulation signal,

[0104] The single-level modulated signal carries a first physical cell identifier PCI; and / or the single-level modulated signal occupies at least one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

[0105] In some embodiments, when the first signal includes: a first-level modulation signal and a second-level modulation signal,

[0106] The first-level modulated signal carries the first part of the information of the second PCI, and the second-level modulated signal carries the second part of the information of the second PCI;

[0107] and / or,

[0108] The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

[0109] In some embodiments, when the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511.

[0110] In some embodiments, when the first signal includes the primary synchronization signal and the secondary synchronization signal,

[0111] The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain;

[0112] and / or,

[0113] The primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain.

[0114] In some embodiments, the first signal includes at least one of a periodic signal, a semi-persistent signal, and a non-periodic signal.

[0115] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0116] A first command sent by a primary cell is received, where the first command is used to trigger the first cell to send the first signal.

[0117] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0118] receiving first configuration information sent by a primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0119] According to the first configuration information, the first signal is sent on the time domain resources and the frequency domain resources and / or the first signal is sent within the first time window.

[0120] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0121] determining a time domain resource and a frequency domain resource of the first signal, and sending first indication information to a primary cell, where the first indication information is used to indicate the time domain resource and the frequency domain resource of the first signal;

[0122] The first signal is sent on the time domain resources and the frequency domain resources.

[0123] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0124] Determining, according to the PCI of the first cell, a timing for sending the first signal within the first time window;

[0125] The first signal is sent at the determined sending opportunity.

[0126] The present disclosure also provides a first terminal, including a memory, a transceiver, and a processor.

[0127] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0128] receiving a first signal sent by a first cell, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state;

[0129] According to the first signal, a second signal is sent to the second cell; the second cell includes at least one of the following: a main cell, the first cell, and a secondary cell in the first secondary cell group; the second signal is used to trigger the secondary cell to be activated to send a synchronization signal and a broadcast channel block SSB, and the secondary cell to be activated includes: the first cell and / or the secondary cell in the first secondary cell group.

[0130] In some embodiments, the modulation signal includes at least one of the following:

[0131] On-off keying OOK signal;

[0132] Amplitude shift keying ASK signal;

[0133] Frequency shift keying FSK signal;

[0134] Phase Shift Keying PSK signal.

[0135] In some embodiments, when the first signal comprises a single-level modulation signal,

[0136] The single-level modulated signal carries a first physical cell identifier PCI; and / or the single-level modulated signal occupies at least one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

[0137] In some embodiments, when the first signal includes: a first-level modulation signal and a second-level modulation signal,

[0138] The first-level modulated signal carries the first part of the information of the second PCI, and the second-level modulated signal carries the second part of the information of the second PCI;

[0139] and / or,

[0140] The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

[0141] In some embodiments, when the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511.

[0142] In some embodiments, when the first signal includes the primary synchronization signal and the secondary synchronization signal,

[0143] The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain;

[0144] and / or,

[0145] The primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain.

[0146] In some embodiments, the first signal includes at least one of a periodic signal, a semi-persistent signal, and a non-periodic signal.

[0147] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0148] receiving first configuration information sent by a primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0149] According to the first configuration information, the first signal is received on the time domain resources and the frequency domain resources and / or the first signal is received within the first time window.

[0150] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0151] receiving second configuration information sent by the primary cell, where the second configuration information includes: a second time window of the second signal;

[0152] According to the first signal, the second signal is sent to the second cell within the second time window.

[0153] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0154] determining, according to the first signal, a physical cell identifier PCI carried by the first signal;

[0155] determining, according to the PCI, a timing for sending the second signal within the second time window;

[0156] The second signal is sent at the determined sending opportunity.

[0157] In some embodiments, when the first terminal receives multiple first signals, the processor is further configured to read the computer program in the memory and perform the following operations:

[0158] At least one secondary cell to be activated is determined according to the multiple first signals.

[0159] In some embodiments, the second signal carries SSB information corresponding to the target beam direction.

[0160] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0161] sending the second signal to the second cell according to the downlink measurement result; or,

[0162] sending the second signal to the second cell according to the instruction of the primary cell; or

[0163] sending the second signal to the second cell according to historical data; or,

[0164] The second signal is sent to the second cell by broadcasting or multicasting.

[0165] The present disclosure also provides a primary cell, including a memory, a transceiver, and a processor.

[0166] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0167] Sending first configuration information to the first cell and the first terminal, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0168] In some embodiments, the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

[0169] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0170] A first command is sent to a first cell, where the first command is used to trigger the first cell to send the first signal.

[0171] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0172] Determine whether to send the first command based on the first information; in some embodiments, the first information includes at least one of the following: radio link quality information, uplink reference signal strength information, and cell traffic load information.

[0173] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0174] determining the first configuration information;

[0175] and / or,

[0176] Receive first indication information sent by the first cell, where the first indication information is used to indicate time domain resources and frequency domain resources of the first signal.

[0177] In some embodiments, the processor is further configured to read the computer program in the memory and perform the following operations:

[0178] Sending second configuration information to the first terminal and the second cell, where the second configuration information includes: a second time window of the second signal;

[0179] In some embodiments, the second cell includes at least one of the following: a primary cell, the first cell, and a secondary cell in the first secondary cell group.

[0180] An embodiment of the present disclosure further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the method described above.

[0181] The embodiment of the present disclosure further provides a computer program product, comprising computer instructions, which implement the steps of the above method when executed by a processor.

[0182] The above technical solution disclosed in the present invention has at least the following beneficial effects:

[0183] In the signal transmission method, configuration method, device, cell and terminal of the embodiments of the present invention, the energy-saving cell sends a first signal, the first terminal measures the first signal, sends a second signal to the energy-saving cell, and triggers the cell receiving the second signal to send SSB, thereby activating the energy-saving cell; using this signal transmission method, the first cell can send the first signal so that the first terminal can establish downlink coarse synchronization with the energy-saving cell based on the first signal, and measure the signal strength of the energy-saving cell, thereby solving the problem that the energy-saving cell is unknown and unmeasurable to the first terminal, improving the success rate of the first terminal in selecting the energy-saving cell to be activated, and thereby improving the data transmission rate of the first terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0184] FIG1 is a schematic diagram showing a connection between a terminal 1 and a base station 1 in carrier aggregation in the related art;

[0185] FIG2 is a block diagram of a wireless communication system to which the embodiments of the present disclosure may be applied;

[0186] FIG3 is a schematic diagram showing one of the steps of the signal transmission method provided by an embodiment of the present disclosure;

[0187] FIG4 shows a second schematic diagram of steps of the signal transmission method provided by an embodiment of the present disclosure;

[0188] FIG5 shows a third schematic diagram of steps of the configuration method provided by an embodiment of the present disclosure;

[0189] FIG6 is a schematic diagram showing the principle of Example 1 provided by an embodiment of the present disclosure;

[0190] FIG7 is a schematic diagram showing the principle of Example 2 provided by an embodiment of the present disclosure;

[0191] FIG8 is a schematic diagram showing the principle of Example 3 provided by an embodiment of the present disclosure;

[0192] FIG9 is a schematic diagram showing the principle of Example 4 provided in an embodiment of the present disclosure;

[0193] FIG10 is a schematic diagram showing the principle of Example 5 provided by an embodiment of the present disclosure;

[0194] FIG11 is a schematic diagram showing the principle of Example 6 provided by an embodiment of the present disclosure;

[0195] FIG12 shows one structural diagram of a signal transmission device provided by an embodiment of the present disclosure;

[0196] FIG13 is a schematic structural diagram of a first cell provided by an embodiment of the present disclosure;

[0197] FIG14 shows a second structural diagram of a signal transmission device provided by an embodiment of the present disclosure;

[0198] FIG15 is a schematic structural diagram of a first terminal provided by an embodiment of the present disclosure;

[0199] FIG16 is a schematic diagram showing the structure of a configuration device provided by an embodiment of the present disclosure;

[0200] FIG17 is a schematic structural diagram of a primary cell provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0201] In order to make the technical problems, technical solutions and advantages to be solved by the present disclosure clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0202] Figure 2 shows a block diagram of a wireless communication system applicable to the embodiments of the present disclosure. The wireless communication system includes a terminal device 11 and a network-side device 12. In some embodiments, the terminal device 11 may also be referred to as a terminal or a user equipment (UE). It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present disclosure. The network-side device 12 may be a base station or a core network. It should be noted that in the embodiments of the present disclosure, only a base station in the NR system is used as an example, but the specific type of the base station is not limited.

[0203] In the embodiments of the present disclosure, the term "and / or" describes the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0204] In the embodiments of the present disclosure, the term "plurality" refers to two or more than two, and other quantifiers are similar thereto.

[0205] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the embodiments described are only part of the embodiments of the present disclosure and not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present disclosure.

[0206] The technical solution provided by the embodiments of the present disclosure can be applicable to a variety of systems, especially 5G systems. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new air interface (NR) system, etc. These various systems include terminal equipment and network equipment. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5G System, 5GS), etc.

[0207] The terminal device involved in the embodiments of the present disclosure may be a device that provides voice and / or data connectivity to a user, a handheld device with wireless connection capabilities, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). A wireless terminal device can communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in, or vehicle-mounted mobile device that exchanges voice and / or data with a radio access network. For example, a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiated Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, or a user device, but is not limited in the embodiments of the present disclosure.

[0208] The network device involved in the embodiments of the present disclosure may be a base station, which may include multiple cells providing services to terminals. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in an access network that communicates with a wireless terminal device through one or more sectors on an air interface, or may be named otherwise. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, acting as a router between the wireless terminal device and the rest of the access network. In some embodiments, the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management of the air interface. For example, the network device involved in the embodiments of the present disclosure may be a base transceiver station (BTS) in the Global System for Mobile communications (GSM) or code division multiple access (CDMA), a network device (NodeB) in wide-band code division multiple access (WCDMA), an evolutionary Node B (eNB or e-NodeB) in the long term evolution (LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), a home evolved Node B (HeNB), a relay node, a femto, a pico, etc., and is not limited in the embodiments of the present disclosure. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be geographically separated.

[0209] Network devices and terminal devices can each use one or more antennas for Multiple Input Multiple Output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be two-dimensional MIMO (2D-MIMO), three-dimensional MIMO (3D-MIMO), full-dimensional MIMO (FD-MIMO), or massive MIMO. It can also use diversity transmission, precoded transmission, or beamforming transmission.

[0210] As shown in FIG3 , an embodiment of the present disclosure provides a signal transmission method, the method comprising:

[0211] Step 201: A first cell sends a first signal to a first terminal, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a channel status information reference signal (CSI-RS), and a tracking reference signal (TRS).

[0212] The first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

[0213] In an embodiment of the present disclosure, a first cell in an energy-saving state sends a first signal, a first terminal measures the first signal, and sends a second signal, triggering the cell receiving the second signal to send an SSB, thereby activating the cell in the energy-saving state; using this signal transmission method, the first cell can send a first signal so that the first terminal can establish downlink coarse synchronization with the first cell based on the first signal, and measure the signal strength of the first cell, thereby solving the problem that the first cell is unknown and unmeasurable to the first terminal, improving the success rate of the first terminal in selecting the energy-saving cell to be activated, and thereby improving the data transmission rate of the first terminal.

[0214] In some embodiments, the secondary cell in the energy-saving state may be referred to as an energy-saving cell in the present disclosure; for example, the first cell includes: an energy-saving cell, and / or at least one cell in an energy-saving cell group.

[0215] In one implementation, the first signal may be understood as a discovery signal (DS).

[0216] In some embodiments, the purpose of sending the first signal is to assist the first terminal in completing downlink coarse synchronization and / or to assist the first terminal in completing downlink signal strength measurement.

[0217] In the embodiment of the present disclosure, the first terminal uses carrier aggregation and is in an RRC connected state, and the service cell of the first terminal includes a primary cell and a secondary cell; in some embodiments, the secondary cell includes: at least one secondary cell in an energy-saving state, and at least one secondary cell in a non-energy-saving state (also referred to as an activated state, a working state, etc.).

[0218] As an optional embodiment, the modulated signal includes at least one of the following:

[0219] On-Off Keying (OOK) signal;

[0220] Amplitude Shift Keying (ASK) signal;

[0221] Frequency Shift Keying (FSK) signal;

[0222] Phase Shift Keying (PSK) signal.

[0223] In some embodiments, the modulated signal can be received and measured without strict synchronization between the base station and the terminal, thereby facilitating reception and measurement by the first terminal and improving the data transmission rate of the first terminal.

[0224] In the embodiment of the present disclosure, the first signal adopts a modulated signal, or the first signal adopts a combined signal of a modulated signal and at least one of PSS, SSS, CSI-RS, and TRS, or the first signal adopts a combined signal of PSS and SSS, or the first signal adopts a combined signal of PSS, SSS, and TRS, or the first signal adopts a combined signal of PSS, SSS, and CSI-RS.

[0225] In one implementation, the first signal is carried by a single-level modulated signal, that is, the first signal includes a modulated signal; then when the first signal includes: a single-level modulated signal,

[0226] The single-stage modulated signal carries a first physical cell identity (PCI), such as any one of PCI 0 to PCI 1007; and / or the single-stage modulated signal occupies at least one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

[0227] In another implementation, the first signal is carried by a two-level modulation signal, that is, the first signal includes: a first-level modulation signal and a second-level modulation signal; then when the first signal includes: a first-level modulation signal and a second-level modulation signal,

[0228] The first-level modulated signal carries the first part of the second PCI information (such as (0-2)), the second-level modulated signal carries the second part of the information of the second PCI ( (0-335)); In some embodiments, the first part of the second PCI information and the second part of the second PCI information constitute the complete second PCI information;

[0229] and / or,

[0230] The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

[0231] In another implementation, when the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511; for example, since the first cell has a longer period for sending the first signal, the first signal adopts an m sequence with a length of 255 to obtain better detection performance.

[0232] As an optional embodiment, when the first signal includes the primary synchronization signal and the secondary synchronization signal,

[0233] The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain. Since the first cell has a long period for sending the first signal, the primary synchronization signal occupies two symbols and the secondary synchronization signal occupies two symbols for sending, thereby obtaining better detection performance.

[0234] And / or, the primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain. This approach can reduce the time it takes for the first cell to send the first signal, better save energy, and reduce interference to other cells.

[0235] In at least one embodiment of the present disclosure, the first signal includes at least one of a periodic signal, a semi-persistent signal, and an aperiodic signal. When the first signal is a periodic signal, its period is relatively long, such as 80ms, 160ms, or 320ms, to achieve energy saving.

[0236] In an optional embodiment of the present disclosure, before step 201, the method further includes:

[0237] The first cell receives a first command sent by a primary cell, where the first command is used to trigger the first cell to send the first signal.

[0238] In some embodiments, the primary cell may determine whether it is necessary to instruct the first cell to send the first signal to meet the data transmission requirements of the first terminal based on information such as radio link quality information, uplink reference signal strength information, and cell service load information.

[0239] In another optional embodiment of the present disclosure, before step 201, the method further includes:

[0240] The first cell receives first configuration information sent by the primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0241] Accordingly, step 201 includes:

[0242] The first cell sends the first signal on the time domain resources and the frequency domain resources and / or sends the first signal within the first time window according to the first configuration information.

[0243] In other words, the primary cell configures the time domain resources and frequency domain resources of the first signal of the first cell, and notifies the first cell and the first terminal at the same time; accordingly, the first cell sends the first signal on the time domain resources and frequency domain resources configured by the primary cell, and the first terminal receives the first signal on the time domain resources and frequency domain resources configured by the primary cell, completing downlink coarse synchronization and first signal strength measurement; or, the primary cell configures the first time window of the first signal to the first cell and the first terminal, and accordingly, the first cell sends the first signal within the first time window, and the first terminal receives it within the first time window, completing downlink coarse synchronization and first signal strength measurement.

[0244] In another optional embodiment of the present disclosure, before step 201, the method further includes:

[0245] The first cell determines, by way of example, time domain resources and frequency domain resources of the first signal, and sends, to the primary cell, first indication information, where the first indication information is used to indicate the time domain resources and frequency domain resources of the first signal;

[0246] Accordingly, step 201 includes:

[0247] The first cell sends the first signal on the time domain resources and frequency domain resources.

[0248] In other words, the first cell autonomously determines the time domain resources and frequency domain resources of the first signal, and then sends them to the main cell through the first indication information, and the main cell sends the time domain resources and frequency domain resources of the first signal autonomously determined by the first cell to the first terminal; accordingly, the first cell sends the first signal on the autonomously determined time domain resources and frequency domain resources, and the first terminal receives the first signal on the time domain resources and frequency domain resources autonomously determined by the first cell indicated by the main cell, completing downlink coarse synchronization and first signal strength measurement.

[0249] As an optional embodiment, the first cell sending the first signal within the first time window includes:

[0250] Determining, by the first cell, a timing for sending the first signal within the first time window according to the PCI of the first cell;

[0251] The first cell sends the first signal at the determined sending timing.

[0252] In the embodiment of the present disclosure, the first cell determines the timing of sending the first signal within the first time window according to its own PCI, so as to avoid interference when different first cells send the first signals.

[0253] In some embodiments, the first time window is a periodic time window, including a start time, a duration, and a period value.

[0254] In some embodiments, the first time window is a non-periodic time window, including a start time and a duration.

[0255] It should be noted that in order to facilitate the measurement of the first terminal, all secondary cells in the energy-saving state can be triggered to send the first signal before the first terminal sends the second signal. In this way, the first terminal can determine at least one energy-saving cell to be activated by measuring the first signals of multiple first cells, and then send the second signal to the main cell, thereby solving the problem that the energy-saving cell is unknown and unpredictable to the first terminal, and improving the success rate of the first terminal in selecting the energy-saving cell to be activated.

[0256] In summary, in the embodiment of the present disclosure, the energy-saving cell sends a first signal, the first terminal measures the first signal, and sends a second signal to the energy-saving cell, triggering the cell receiving the second signal to send SSB, thereby activating the energy-saving cell; using this signal transmission method, the first cell can send a first signal, so that the first terminal can establish downlink coarse synchronization with the energy-saving cell based on the first signal, and measure the signal strength of the energy-saving cell, thereby solving the problem that the energy-saving cell is unknown and unpredictable to the first terminal, improving the success rate of the first terminal in selecting the energy-saving cell to be activated, and thereby improving the data transmission rate of the first terminal.

[0257] As shown in FIG4 , an embodiment of the present disclosure further provides a signal transmission method, the method comprising:

[0258] Step 301: A first terminal receives a first signal sent by a first cell, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a channel state information reference signal (CSI-RS), and a tracking reference signal (TRS); the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

[0259] In step 302, the first terminal sends a second signal to the second cell based on the first signal; the second cell includes at least one of the following: a main cell, the first cell, and a secondary cell in the first secondary cell group; the second signal is used to trigger the secondary cell to be activated to send a synchronization signal and a broadcast channel block SSB, and the secondary cell to be activated includes: the first cell and / or the secondary cell in the first secondary cell group.

[0260] In some embodiments, the second cell may be a secondary cell that sends the first signal, or a secondary cell in the first secondary cell group that does not send the first signal, or a secondary cell in the first secondary cell group that sends the first signal, which is not specifically limited here.

[0261] In some embodiments, the secondary cell in the energy-saving state may be referred to as an energy-saving cell in the present disclosure; for example, the first cell includes: an energy-saving cell, and / or at least one cell in an energy-saving cell group.

[0262] In one implementation, the first signal may be understood as a discovery signal (DS).

[0263] In another implementation, the second signal may be understood as a wake-up signal (Wake Up Signal, WUS).

[0264] In some embodiments, the purpose of sending the first signal is to assist the first terminal in completing downlink coarse synchronization and / or to assist the first terminal in completing downlink signal strength measurement.

[0265] As an optional embodiment, the modulated signal includes at least one of the following:

[0266] On-off keying OOK signal;

[0267] Amplitude shift keying ASK signal;

[0268] Frequency shift keying FSK signal;

[0269] Phase Shift Keying PSK signal.

[0270] In some embodiments, the modulated signal can be received and measured without strict synchronization between the base station and the terminal, thereby facilitating reception and measurement by the first terminal and improving the data transmission rate of the first terminal.

[0271] In the embodiment of the present disclosure, the first signal adopts a modulated signal, or the first signal adopts a combined signal of a modulated signal and at least one of PSS, SSS, CSI-RS, and TRS, or the first signal adopts a combined signal of PSS and SSS, or the first signal adopts a combined signal of PSS, SSS, and TRS, or the first signal adopts a combined signal of PSS, SSS, and CSI-RS.

[0272] In one implementation, when the first signal includes a single-stage modulation signal,

[0273] The single-stage modulated signal carries a first physical cell identifier PCI, such as any one of PCI 0 to PCI 1007; and / or the single-stage modulated signal occupies at least one orthogonal frequency division multiplexing OFDM symbol in the time domain.

[0274] In another implementation, the first signal is carried by a two-level modulation signal, that is, the first signal includes: a first-level modulation signal and a second-level modulation signal; then when the first signal includes: a first-level modulation signal and a second-level modulation signal,

[0275] The first-level modulated signal carries the first part of the second PCI information (such as (0-2)), the second-level modulated signal carries the second part of the information of the second PCI ( (0-335)); In some embodiments, the first part of the second PCI information and the second part of the second PCI information constitute the complete second PCI information;

[0276] and / or,

[0277] The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

[0278] In another implementation, when the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511; for example, since the first cell has a longer period for sending the first signal, the first signal adopts an m sequence with a length of 255 to obtain better detection performance.

[0279] As an optional embodiment, when the first signal includes the primary synchronization signal and the secondary synchronization signal,

[0280] The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain. Since the first cell has a long period for sending the first signal, the primary synchronization signal occupies two symbols and the secondary synchronization signal occupies two symbols for sending, thereby obtaining better detection performance.

[0281] And / or, the primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain. This approach can reduce the time it takes for the first cell to send the first signal, better save energy, and reduce interference to other cells.

[0282] In at least one embodiment of the present disclosure, the first signal includes at least one of a periodic signal, a semi-persistent signal, and an aperiodic signal. When the first signal is a periodic signal, its period is relatively long, such as 80ms, 160ms, or 320ms, to achieve energy saving.

[0283] In an optional embodiment of the present disclosure, before step 301, the method further includes:

[0284] The first terminal receives first configuration information sent by a primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0285] Accordingly, step 301 includes:

[0286] The first terminal receives the first signal on the time domain resources and the frequency domain resources and / or receives the first signal within the first time window according to the first configuration information.

[0287] In other words, the primary cell configures the time domain resources and frequency domain resources of the first signal of the first cell, and notifies the first cell and the first terminal at the same time; accordingly, the first cell sends the first signal on the time domain resources and frequency domain resources configured by the primary cell, and the first terminal receives the first signal on the time domain resources and frequency domain resources configured by the primary cell, completing downlink coarse synchronization and first signal strength measurement; or, the primary cell configures the first time window of the first signal to the first cell and the first terminal, and accordingly, the first cell sends the first signal within the first time window, and the first terminal receives it within the first time window, completing downlink coarse synchronization and first signal strength measurement.

[0288] In another optional embodiment of the present disclosure, before step 301, the method further includes:

[0289] The first terminal receives second configuration information sent by the primary cell, where the second configuration information includes: a second time window of the second signal;

[0290] Accordingly, step 301 includes:

[0291] The first terminal sends the second signal to the second cell within the second time window based on the first signal.

[0292] In some embodiments, when the first terminal receives multiple first signals, the method further includes:

[0293] The first terminal determines at least one secondary cell to be activated according to the multiple first signals.

[0294] In other words, the primary cell configures a second time window for the first terminal, instructing the first terminal to send a second signal within the second time window. The first terminal measures the first signal sent by the first cell, determines the best activated cell (such as secondary cell 2), and then sends the second signal to secondary cell 2 within the second time window, activating the secondary cell to send SSBs. The primary cell instructs secondary cell 2 to receive the second signal within the second time window. After receiving the second signal, secondary cell 2 begins sending SSBs.

[0295] As an optional embodiment, the first terminal sending the second signal to the second cell within the second time window according to the first signal includes:

[0296] Determining, by the first terminal, a physical cell identifier PCI carried by the first signal according to the first signal;

[0297] Determining, by the first terminal, a timing for sending the second signal within the second time window according to the PCI;

[0298] The first terminal sends the second signal at the determined sending timing.

[0299] For example, the first terminal determines the sending timing of the second signal within the second time window based on the detected PCI information. The sending timing of the second signal corresponding to different PCIs is different, such as sending timing = (first terminal_ID+PCI) mod the total number of sending opportunities in the second time window, so as to avoid interference when different first terminals send the second signal.

[0300] In some embodiments, the second time window is a periodic time window, including a start time, a duration, and a period value.

[0301] In some embodiments, the second time window is a non-periodic time window, including a start time and a duration.

[0302] In at least one embodiment of the present disclosure, the second signal carries SSB information corresponding to the target beam direction.

[0303] In at least one embodiment of the present disclosure, step 302 includes:

[0304] The first terminal sends the second signal to the second cell according to the downlink measurement result; or

[0305] The first terminal sends the second signal to the second cell according to the instruction of the primary cell; or

[0306] The first terminal sends the second signal to the second cell according to historical data; or

[0307] The first terminal sends the second signal to the second cell by broadcasting or multicasting.

[0308] In other words, the way in which the first terminal sends the second signal includes: sending according to downlink measurement results, sending according to the main cell instruction, blind sending, sending according to historical data, group sending through broadcast or multicast, etc., which are not specifically limited here.

[0309] In summary, in the embodiment of the present disclosure, the energy-saving cell sends a first signal, the first terminal measures the first signal, and sends a second signal to the energy-saving cell, triggering the cell receiving the second signal to send SSB, thereby activating the energy-saving cell; using this signal transmission method, the first cell can send a first signal, so that the first terminal can establish downlink coarse synchronization with the energy-saving cell based on the first signal, and measure the signal strength of the energy-saving cell, thereby solving the problem that the energy-saving cell is unknown and unpredictable to the first terminal, improving the success rate of the first terminal in selecting the energy-saving cell to be activated, and thereby improving the data transmission rate of the first terminal.

[0310] As shown in FIG5 , an embodiment of the present disclosure further provides a configuration method, the method comprising:

[0311] Step 401: A primary cell sends first configuration information to a first cell and a first terminal, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal.

[0312] In some embodiments, the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

[0313] In other words, the primary cell configures the time domain resources and frequency domain resources of the first signal of the first cell, and notifies the first cell and the first terminal at the same time; accordingly, the first cell sends the first signal on the time domain resources and frequency domain resources configured by the primary cell, and the first terminal receives the first signal on the time domain resources and frequency domain resources configured by the primary cell, completing downlink coarse synchronization and first signal strength measurement; or, the primary cell configures the first time window of the first signal to the first cell and the first terminal, and accordingly, the first cell sends the first signal within the first time window, and the first terminal receives it within the first time window, completing downlink coarse synchronization and first signal strength measurement.

[0314] In at least one embodiment of the present disclosure, the method further includes:

[0315] The primary cell sends a first command to the first cell, where the first command is used to trigger the first cell to send the first signal.

[0316] In some embodiments, the method further comprises:

[0317] The primary cell determines whether to send the first command based on first information; in some embodiments, the first information includes at least one of the following: radio link quality information, uplink reference signal strength information, and cell service load information.

[0318] In other words, the primary cell can determine whether to instruct the first cell to send the first signal to meet the data transmission requirements of the first terminal based on information such as radio link quality information, uplink reference signal strength information, and cell service load information.

[0319] In at least one embodiment of the present disclosure, the method further includes:

[0320] Determining, by the primary cell, the first configuration information;

[0321] and / or,

[0322] The primary cell receives first indication information sent by the first cell, where the first indication information is used to indicate time domain resources and frequency domain resources of the first signal.

[0323] In other words, the first configuration information is determined by the primary cell, or is sent to the primary cell after confirmation by the first cell. For example, the primary cell may determine whether to instruct the first cell to send the first signal based on information such as radio link quality information, uplink reference signal strength information, and cell traffic load information to meet the data transmission requirements of the first terminal.

[0324] In another optional embodiment of the present disclosure, the method further includes:

[0325] The primary cell sends second configuration information to the first terminal and the second cell, where the second configuration information includes: a second time window of the second signal;

[0326] In some embodiments, the second cell includes at least one of the following: a primary cell, the first cell, and a secondary cell in the first secondary cell group.

[0327] In other words, the primary cell configures a second time window for the first terminal, instructing the first terminal to send a second signal within the second time window. The first terminal measures the first signal sent by the first cell, determines the best activated cell (such as secondary cell 2), and then sends the second signal to secondary cell 2 within the second time window, activating the secondary cell to send SSBs. The primary cell instructs secondary cell 2 to receive the second signal within the second time window. After receiving the second signal, secondary cell 2 begins sending SSBs.

[0328] In summary, in the embodiment of the present disclosure, the main cell configures resources or time windows for transmitting the first signal and / or the second signal for the energy-saving cell and the first terminal, so that the first signal can be sent through the first cell, so that the first terminal can establish downlink coarse synchronization with the energy-saving cell based on the first signal, and measure the signal strength of the energy-saving cell, thereby solving the problem that the energy-saving cell is unknown and unpredictable to the first terminal, improving the success rate of the first terminal in selecting the energy-saving cell to be activated, and thereby improving the data transmission rate of the first terminal.

[0329] In order to more clearly describe the information transmission method and configuration method provided by the embodiments of the present disclosure, several examples are provided below for illustration.

[0330] Example 1: The first signal uses a single-stage OOK signal

[0331] The first signal is carried by a single OOK / ASK / FSK / PSK signal, and the OOK / ASK / FSK / PSK signal carries PCI (0-1007); a single OOK / ASK / FSK / PSK signal occupies one OFDM symbol in the time domain.

[0332] Compared with traditional signals such as PSS / SSS, OOK / ASK / FSK / PSK signals are simpler and more power-efficient in both sending and receiving processing. Therefore, the advantage of using OOK / ASK / FSK / PSK signals is that base stations and terminals can be more energy-efficient and can meet the most basic downlink coarse synchronization and signal strength measurement requirements.

[0333] Specifically, when the first cell is in an energy-saving state, it may not send any downlink signals. Therefore, for the first terminal, the first cell is an unknown cell and the signal strength of the first cell cannot be measured. This is not conducive to the first terminal activating the first cell when it needs the data transmission service provided by the first cell. Therefore, when the first cell is in an energy-saving state, it periodically, semi-continuously, or aperiodically sends a first signal so that the first terminal can complete downlink coarse synchronization with the first energy-saving cell and measure the downlink signal strength based on the first signal (DS).

[0334] As shown in Figure 6, each small square represents one OFDM symbol in time and N resource blocks in frequency. Assuming N = 1, this represents one resource block. The first signal is carried using a single OOK signal, occupying one OFDM symbol and nine resource blocks. This first OOK signal carries the PCI (0-1007) information for the first cell.

[0335] The first terminal obtains the PCI information of the first cell by receiving the first OOK signal shown in FIG6 , and completes downlink coarse synchronization with the first cell and downlink signal strength measurement.

[0336] In this example, the first cell can send a first signal based on the OOK signal, so that the first terminal can obtain the PCI information of the first cell based on the OOK signal, establish downlink coarse synchronization with the first cell, and measure the signal strength of the first cell, thereby solving the problem that the first cell is unknown and unpredictable to the first terminal, improving the success rate of the first terminal in selecting the energy-saving cell to be activated, and thereby improving the data transmission rate of the first terminal. At the same time, the simple OOK signal is beneficial to energy saving of the base station and the terminal.

[0337] Example 2: The first signal uses a two-level OOK signal

[0338] The first signal is carried by two-stage OOK / ASK / FSK / PSK signal. The first-stage OOK / ASK / FSK / PSK signal carries (0~2), second level OOK / ASK / FSK / PSK signal carrying (0 to 335) The first-level OOK / ASK / FSK / PSK signal and the second-level OOK / ASK / FSK / PSK signal each occupy at least one OFDM symbol in the time domain.

[0339] Compared with traditional signals such as PSS / SSS, OOK / ASK / FSK / PSK signals are simpler and more power-efficient in both sending and receiving processing. Therefore, the advantage of using OOK / ASK / FSK / PSK signals is that base stations and terminals can be more energy-efficient and can meet the most basic downlink coarse synchronization and signal strength measurement requirements.

[0340] Compared with single-stage OOK signals, two-stage OOK signals can provide more accurate downlink synchronization and signal strength measurement, but at the same time they are relatively more power-consuming.

[0341] Specifically, when the first cell is in an energy-saving state, it may not send any downlink signals. Therefore, for the first terminal, the first cell is an unknown cell and the signal strength of the first cell cannot be measured. This is not conducive to the first terminal activating the first cell when it needs the data transmission service provided by the first cell. Therefore, when the first cell is in an energy-saving state, the first cell periodically, semi-continuously, or aperiodically sends a first signal so that the first terminal can complete downlink coarse synchronization with the first cell and downlink signal strength measurement based on the first signal (DS).

[0342] As shown in Figure 7, each small square in the figure represents an OFDM symbol in time and N resource blocks in frequency. Assuming N=1, it represents 1 resource block. The first signal is carried by a two-stage OOK signal, namely the first-stage OOK signal and the second-stage OOK signal. The two-stage OOK signals occupy one OFDM symbol and 9 resource blocks respectively. The first-stage OOK signal carries (0~2), second-level OOK signal carrying (0~335), the two-stage OOK signal carries the PCI (0~1007) information of the first cell.

[0343] The first terminal obtains the PCI information of the first cell by receiving the first-level OOK signal and the second-level OOK signal shown in FIG7 , and completes downlink coarse synchronization and downlink signal strength measurement with the first energy-saving cell.

[0344] In this example, the first cell can send a first signal based on an OOK signal so that the first terminal can obtain the PCI information of the first cell based on the OOK signal, establish downlink coarse synchronization with the first cell, and measure the signal strength of the first cell, thereby solving the problem that the first cell is unknown and unmeasurable to the first terminal, improving the success rate of the first terminal in selecting the energy-saving cell to be activated, and thus improving the data transmission rate of the first terminal. At the same time, the simple OOK signal is beneficial to energy saving of the base station and the terminal. Compared with the single-stage OOK signal, the two-stage OOK signal can provide more accurate downlink synchronization and signal strength measurement, but it will also consume more power.

[0345] Example 3: Primary cell configures transmission resources for the first signal

[0346] For the first terminal that uses carrier aggregation and is in the RRC connected state, its carrier aggregation primary cell Pcell sends a first command to the first energy-saving cell Scell1 or the first energy-saving cell group, triggering the first energy-saving cell Scell1 or at least one Scell ​​in the first energy-saving cell group to send a first discovery signal (DS).

[0347] The Pcell determines whether to instruct the Scell ​​to send a first signal to meet a data transmission requirement of the first terminal based on at least one of the radio link quality information, the uplink reference signal strength information, and the cell traffic load information.

[0348] The Pcell configures the time domain resources and frequency domain resources of the first signal of the Scell, and notifies the Scell ​​and the first terminal at the same time.

[0349] For example, for a first terminal using carrier aggregation and in an RRC connected state, its serving cells include Pcell and Scell0. If the current Pcell and Scell0 cannot meet the data transmission needs of the first terminal, it is necessary to activate the first cell Scell1 in an energy-saving state so that Scell1 can also provide data transmission services to the first terminal. The time domain resources and frequency domain resources occupied by the first signal can be configured by the Pcell and notified to the Scell ​​and the first terminal at the same time.

[0350] As shown in Figure 8, the specific process includes:

[0351] Step 1: The Pcell determines the time domain resources and frequency domain resources of the first signal of the first energy-saving cell Scell1;

[0352] Step 2: The Pcell notifies the Scell ​​1 of the first signal resource;

[0353] Step 3: The Pcell notifies the first terminal of the first signal resource;

[0354] Step 4: When Scell1 is required to send a first signal, the Pcell instructs Scell1 to send the first signal on the configured resources;

[0355] Step 5: Scell1 sends a first signal on the configured resources;

[0356] Step 6: The first terminal completes downlink coarse synchronization and signal strength measurement according to the first signal;

[0357] Step 7: The first terminal sends a second signal to the Pcell, where the second signal is used to activate the Scell1 to send the SSB.

[0358] In this example, a method for determining the first signal resource configuration by Pcell is adopted. The first cell can send the first signal on the time-frequency resources configured by the Pcell, so that the first terminal can establish downlink coarse synchronization with the first cell based on the first signal and measure the signal strength of the first cell, thereby facilitating the first terminal to send the second signal to activate the first cell in the next step. At the same time, since it is determined by the Pcell, mutual interference between the first signals sent by multiple Scells can be effectively avoided.

[0359] Example 4: The first cell autonomously determines the transmission resources of the first signal

[0360] For the first terminal that uses carrier aggregation and is in the RRC connected state, its carrier aggregation primary cell Pcell sends a first command to the first energy-saving cell Scell1 or the first energy-saving cell group, triggering the first energy-saving cell Scell1 or at least one Scell ​​in the first energy-saving cell group to send a first discovery signal (DS).

[0361] The Pcell determines whether to instruct the Scell ​​to send a first signal to meet a data transmission requirement of the first terminal based on at least one of the radio link quality information, the uplink reference signal strength information, and the cell traffic load information.

[0362] The Scell ​​autonomously determines the time domain resources and frequency domain resources of the first signal, and then sends it to the Pcell, which then sends it to the first terminal.

[0363] For example, for a first terminal using carrier aggregation and in an RRC connected state, its serving cells include Pcell and Scell0. If the current Pcell and Scell0 cannot meet the data transmission needs of the first terminal, it is necessary to activate the first energy-saving cell Scell1 in an energy-saving state so that Scell1 can also provide data transmission services to the first terminal. The Scell ​​autonomously determines the time domain resources and frequency domain resources of the first signal and then sends it to the Pcell, which then sends it to the first terminal.

[0364] As shown in Figure 9, the specific process includes:

[0365] Step 1: The first energy-saving cell Scell1 autonomously determines the time domain resources and frequency domain resources of its own first signal;

[0366] Step 2: Scell1 notifies the Pcell of the first signal resource;

[0367] Step 3: The Pcell sends the first signal resource to the first terminal;

[0368] Step 4: When Scell1 is required to send a first signal, the Pcell instructs Scell1 to send the first signal on the configured resources;

[0369] Step 5: Scell1 sends a first signal on the configured resources;

[0370] Step 6: The first terminal completes downlink coarse synchronization and signal strength measurement according to the first signal;

[0371] Step 7: The first terminal sends a second signal to Scell ​​1, where the second signal is used to activate Scell ​​1 to send SSB.

[0372] In this example, using this resource configuration method, the first cell can send the first signal on the autonomously determined time-frequency resources. This allows the first terminal to establish downlink coarse synchronization with the first cell based on the first signal and measure the signal strength of the first cell, thereby facilitating the first terminal's subsequent transmission of the second signal to activate the first energy-saving cell. Autonomously determining the time-frequency resources for the first signal by the first energy-saving cell is more flexible and does not require additional signaling notification.

[0373] Example 5: First time window for the first cell to send the first signal

[0374] The PCell configures different first time windows for the first energy-saving cell Scell1 and the second energy-saving cell Scell2, respectively, instructing Scell1 to send the first signal within first time window 1# and instructing Scell2 to send the first signal within first time window 2#. Simultaneously, the PCell sends an instruction to the first terminal, instructing the first terminal to receive the first signal within the first time window and complete downlink coarse synchronization and first signal strength measurement.

[0375] Scell1 and Scell2 determine the timing of sending the first signal within their respective first time windows according to their own PCIs, so as to avoid interference when different Scells send the first signal.

[0376] The first time window is a periodic time window, including a start time, a duration, and a period value.

[0377] The first time window is a non-periodic time window, which includes a start time and a duration.

[0378] To facilitate measurement by the first terminal, all Scells may be triggered to send the first signal before the first terminal sends the second signal. In this way, the first terminal can determine the activated Scell ​​by measuring the first signals of multiple Scells and then send the second signal to the Pcell.

[0379] Specifically, for a first terminal that uses carrier aggregation and is in an RRC connected state, its serving cells include Pcell and Scell0. If the current Pcell and Scell0 cannot meet the data transmission needs of the first terminal, it is necessary to activate the first energy-saving cell Scell1 or the second energy-saving cell Scell2 in an energy-saving state so that Scell1 or Scell2 can also provide data transmission services to the first terminal. In order to save energy in the base station and reduce the interference of the first signal sent by different Scells, the Pcell configures a first time window for the first energy-saving cell Scell1 and the second energy-saving cell Scell2, instructing Scell1 to send the first signal within the first time window 1#, and instructing Scell2 to send the first signal within the first time window #2. At the same time, an instruction is sent to the first terminal, instructing the first terminal to receive the first signal within the first time window 1# and the first time window 2#, completing downlink coarse synchronization and first signal strength measurement.

[0380] As shown in Figure 10, the specific process includes:

[0381] Step 1: The Pcell determines a first time window #1 for a first energy-saving cell Scell1 to send a first signal and a first time window #2 for a second energy-saving cell Scell2 to send a first signal.

[0382] Step 2: The Pcell notifies Scell1 of the first time window configuration of Scell1;

[0383] Step 3: The Pcell notifies Scell2 of the first time window configuration of Scell2;

[0384] Step 4: The Pcell notifies the first terminal of the first time window configuration of Scell ​​1 & 2;

[0385] Step 5: The Pcell instructs the Scell1 to send a first signal in the configured first time window #1;

[0386] Step 6: The Pcell instructs the Scell2 to send the first signal in the configured first time window #2;

[0387] Step 7: Scell1 sends a first signal;

[0388] Step 8: Scell2 sends a first signal;

[0389] Step 9: The first terminal completes downlink coarse synchronization and signal strength measurement according to the first signal;

[0390] Step 10: The first terminal sends a second signal to the Pcell, where the second signal is used to activate Scell1 or Scell2 to send SSB.

[0391] In this example, a method for configuring a first time window for sending a first signal is used. Multiple energy-saving cells can send first signals in different first time windows configured by the Pcell. This allows the first terminal to establish downlink coarse synchronization with the multiple energy-saving cells based on the first signal and measure the signal strength of the multiple energy-saving cells, thereby facilitating the first terminal's subsequent transmission of a second signal to activate the energy-saving cell. Different energy-saving Scells can send first signals in different first time windows to avoid interference with each other. Sending the first signal only within the first time window also helps the base station save energy.

[0392] Example 6: The first terminal sends the second time window of the second signal

[0393] The Pcell configures a second time window for the first terminal and instructs the first terminal to send a second signal within the second time window. The first terminal measures the first signal of an Scell ​​in the first energy-saving cell group, determines the optimal activated cell (e.g., the second energy-saving cell Scell2), and then sends the second signal to the second energy-saving cell Scell2 within the second time window, activating the Scell ​​to send SSBs. The Pcell instructs the Scell ​​in the first energy-saving cell group to receive the second signal within the second time window. After receiving the second signal, the Scell ​​begins sending SSBs.

[0394] The first terminal determines the sending timing of the second signal within the second time window based on the detected PCI information. The sending timing of the second signal corresponding to different PCIs is different, such as sending timing = (first terminal_ID+PCI) mod the total number of sending opportunities in the second timing window, so as to avoid interference when different terminals send the second signal.

[0395] The second time window is a periodic time window, including a start time, a duration, and a period value.

[0396] The second time window is a non-periodic time window, including a start time and a duration.

[0397] The first terminal sends the second signal in the following ways: sending according to a downlink measurement result, sending according to a Pcell instruction, blind sending, sending according to historical data, or group sending.

[0398] Specifically, for a first terminal using carrier aggregation and in an RRC connected state, whose serving cells include a Pcell and Scell0, if the current Pcell and Scell0 cannot meet the data transmission needs of the first terminal, it is necessary to activate a Scell ​​in the first energy-saving cell group that is in an energy-saving state so that the Scell ​​can provide data transmission services to the first terminal. To save energy for the terminal and reduce interference caused by different terminals sending second signals to the Scell, the Pcell configures a second time window for the first terminal, instructing the second terminal to send the second signal within the second time window. At the same time, an indication is sent to the Scells within the first energy-saving cell group, instructing the Scells within the first energy-saving cell group to receive the second signal within the second time window.

[0399] As shown in Figure 11, the specific process includes:

[0400] Step 1: The Pcell determines a second time window for the first terminal to send a second signal;

[0401] Step 2: Pcell notifies Scell1 of the second time window;

[0402] Step 3: Pcell notifies Scell2 of the second time window;

[0403] Step 4: The Pcell notifies the first terminal of the second time window;

[0404] Step 5: PCel instructs the first terminal to send a second signal in a configured second time window;

[0405] Step 6: After receiving the instruction, the first terminal sends a second signal to the second energy-saving cell Scell2 to activate the Scell ​​to send SSB.

[0406] In this example, a second time window for sending a second signal is configured. The first terminal sends the second signal to the second energy-saving cell, Scell2, during the configured second time window. Scell2 then receives the second signal during the specified second time window and then transmits an SSB. Different terminals can send second signals in different second time windows to avoid interference. Sending second signals only within the second time window also helps save energy for the terminals.

[0407] As shown in FIG12 , an embodiment of the present disclosure further provides an information transmission device, which is applied to a first cell. The device includes:

[0408] The first sending unit 1201 is configured to send a first signal to a first terminal, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal;

[0409] The first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

[0410] As an optional embodiment, the modulated signal includes at least one of the following:

[0411] On-off keying OOK signal;

[0412] Amplitude shift keying ASK signal;

[0413] Frequency shift keying FSK signal;

[0414] Phase Shift Keying PSK signal.

[0415] As an optional embodiment, in the case where the first signal includes: a single-level modulation signal,

[0416] The single-level modulated signal carries a first physical cell identifier PCI; and / or the single-level modulated signal occupies at least one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

[0417] As an optional embodiment, in the case where the first signal includes: a first-level modulation signal and a second-level modulation signal,

[0418] The first-level modulated signal carries the first part of the information of the second PCI, and the second-level modulated signal carries the second part of the information of the second PCI;

[0419] and / or,

[0420] The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

[0421] As an optional embodiment, in the case where the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511.

[0422] As an optional embodiment, when the first signal includes the primary synchronization signal and the secondary synchronization signal,

[0423] The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain;

[0424] and / or,

[0425] The primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain.

[0426] As an optional embodiment, the first signal includes at least one of a periodic signal, a semi-persistent signal, and a non-periodic signal.

[0427] As an optional embodiment, the device further includes:

[0428] The third receiving unit is configured to receive a first command sent by a primary cell, where the first command is used to trigger the first cell to send the first signal.

[0429] As an optional embodiment, the device further includes:

[0430] a fourth receiving unit, configured to receive first configuration information sent by a primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0431] The first sending unit is further configured to:

[0432] According to the first configuration information, the first signal is sent on the time domain resources and the frequency domain resources and / or the first signal is sent within the first time window.

[0433] As an optional embodiment, the device further includes:

[0434] a fourth sending unit, configured to determine the time domain resources and frequency domain resources of the first signal, and send first indication information to the primary cell, where the first indication information is used to indicate the time domain resources and frequency domain resources of the first signal;

[0435] The first sending unit is further configured to:

[0436] The first signal is sent on the time domain resources and the frequency domain resources.

[0437] As an optional embodiment, the first sending unit is further configured to:

[0438] Determining, according to the PCI of the first cell, a timing for sending the first signal within the first time window;

[0439] The first signal is sent at the determined sending opportunity.

[0440] In the embodiment of the present disclosure, the energy-saving cell sends a first signal, the first terminal measures the first signal, and sends a second signal to the energy-saving cell, triggering the cell receiving the second signal to send SSB, thereby activating the energy-saving cell; using this signal transmission method, the first cell can send the first signal so that the first terminal can establish downlink coarse synchronization with the energy-saving cell based on the first signal, and measure the signal strength of the energy-saving cell, thereby solving the problem that the energy-saving cell is unknown and unpredictable to the first terminal, improving the success rate of the first terminal in selecting the energy-saving cell to be activated, and thereby improving the data transmission rate of the first terminal.

[0441] It should be noted that the information transmission device provided in the embodiment of the present disclosure is a device capable of executing the above-mentioned information transmission method. All embodiments of the above-mentioned information transmission method are applicable to the device and can achieve the same or similar beneficial effects, which will not be repeated here.

[0442] As shown in FIG13 , an embodiment of the present disclosure further provides a first cell, including a memory 1220 , a transceiver 1210 , and a processor 1200 :

[0443] The memory 1220 is used to store computer programs; the transceiver 1210 is used to send and receive data under the control of the processor 1200; the processor 1200 is used to read the computer program in the memory 1220 and perform the following operations:

[0444] Sending a first signal to a first terminal, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal;

[0445] The first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

[0446] As an optional embodiment, the modulated signal includes at least one of the following:

[0447] On-off keying OOK signal;

[0448] Amplitude shift keying ASK signal;

[0449] Frequency shift keying FSK signal;

[0450] Phase Shift Keying PSK signal.

[0451] As an optional embodiment, in the case where the first signal includes: a single-level modulation signal,

[0452] The single-level modulated signal carries a first physical cell identifier PCI; and / or the single-level modulated signal occupies at least one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

[0453] As an optional embodiment, in the case where the first signal includes: a first-level modulation signal and a second-level modulation signal,

[0454] The first-level modulated signal carries the first part of the information of the second PCI, and the second-level modulated signal carries the second part of the information of the second PCI;

[0455] and / or,

[0456] The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

[0457] As an optional embodiment, in the case where the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511.

[0458] As an optional embodiment, when the first signal includes the primary synchronization signal and the secondary synchronization signal,

[0459] The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain;

[0460] and / or,

[0461] The primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain.

[0462] As an optional embodiment, the first signal includes at least one of a periodic signal, a semi-persistent signal, and a non-periodic signal.

[0463] As an optional embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

[0464] A first command sent by a primary cell is received, where the first command is used to trigger the first cell to send the first signal.

[0465] As an optional embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

[0466] receiving first configuration information sent by a primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0467] According to the first configuration information, the first signal is sent on the time domain resources and the frequency domain resources and / or the first signal is sent within the first time window.

[0468] As an optional embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

[0469] determining a time domain resource and a frequency domain resource of the first signal, and sending first indication information to a primary cell, where the first indication information is used to indicate the time domain resource and the frequency domain resource of the first signal;

[0470] The first signal is sent on the time domain resources and the frequency domain resources.

[0471] As an optional embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

[0472] Determining, according to the PCI of the first cell, a timing for sending the first signal within the first time window;

[0473] The first signal is sent at the determined sending opportunity.

[0474] In some embodiments, in FIG13 , the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 1200 and memory represented by memory 1220. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are all well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1210 may be a plurality of components, i.e., including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1220 may store data used by the processor 1200 when performing operations.

[0475] The processor 1200 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a complex programmable logic device (CPLD). The processor may also adopt a multi-core architecture.

[0476] In the embodiment of the present disclosure, the energy-saving cell sends a first signal, the first terminal measures the first signal, and sends a second signal to the energy-saving cell, triggering the cell receiving the second signal to send SSB, thereby activating the energy-saving cell; using this signal transmission method, the first cell can send the first signal so that the first terminal can establish downlink coarse synchronization with the energy-saving cell based on the first signal, and measure the signal strength of the energy-saving cell, thereby solving the problem that the energy-saving cell is unknown and unpredictable to the first terminal, improving the success rate of the first terminal in selecting the energy-saving cell to be activated, and thereby improving the data transmission rate of the first terminal.

[0477] It should be noted that the first cell provided in the embodiment of the present disclosure is a cell capable of executing the above-mentioned information transmission method. All embodiments of the above-mentioned information transmission method are applicable to the cell and can achieve the same or similar beneficial effects, which will not be repeated here.

[0478] As shown in FIG14 , an embodiment of the present disclosure further provides a signal transmission device, applied to a first terminal, the device including:

[0479] The first receiving unit 1301 is configured to receive a first signal sent by a first cell, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state;

[0480] The second sending unit 1302 is used to send a second signal to the second cell according to the first signal; the second cell includes at least one of the following: a main cell, the first cell, and a secondary cell in the first secondary cell group; the second signal is used to trigger the secondary cell to be activated to send a synchronization signal and a broadcast channel block SSB, and the secondary cell to be activated includes: the first cell and / or the secondary cell in the first secondary cell group.

[0481] As an optional embodiment, the modulated signal includes at least one of the following:

[0482] On-off keying OOK signal;

[0483] Amplitude shift keying ASK signal;

[0484] Frequency shift keying FSK signal;

[0485] Phase Shift Keying PSK signal.

[0486] As an optional embodiment, in the case where the first signal includes: a single-level modulation signal,

[0487] The single-level modulated signal carries a first physical cell identifier PCI; and / or the single-level modulated signal occupies at least one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

[0488] As an optional embodiment, in the case where the first signal includes: a first-level modulation signal and a second-level modulation signal,

[0489] The first-level modulated signal carries the first part of the information of the second PCI, and the second-level modulated signal carries the second part of the information of the second PCI;

[0490] and / or,

[0491] The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

[0492] As an optional embodiment, in the case where the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511.

[0493] As an optional embodiment, when the first signal includes the primary synchronization signal and the secondary synchronization signal,

[0494] The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain;

[0495] and / or,

[0496] The primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain.

[0497] As an optional embodiment, the first signal includes at least one of a periodic signal, a semi-persistent signal, and a non-periodic signal.

[0498] As an optional embodiment, the device further includes:

[0499] a sixth receiving unit, configured to receive first configuration information sent by a primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0500] The first receiving unit is further configured to:

[0501] The first terminal receives the first signal on the time domain resources and the frequency domain resources and / or receives the first signal within the first time window according to the first configuration information.

[0502] As an optional embodiment, the device further includes:

[0503] a seventh receiving unit, configured to receive second configuration information sent by the primary cell, where the second configuration information includes: a second time window of the second signal;

[0504] The second sending unit is further configured to:

[0505] According to the first signal, the second signal is sent to the second cell within the second time window.

[0506] As an optional embodiment, the second sending unit is further configured to:

[0507] determining, according to the first signal, a physical cell identifier PCI carried by the first signal;

[0508] determining, according to the PCI, a timing for sending the second signal within the second time window;

[0509] The second signal is sent at the determined sending opportunity.

[0510] As an optional embodiment, when the first terminal receives multiple first signals, the apparatus further includes:

[0511] The determining unit is configured to determine at least one secondary cell to be activated according to the multiple first signals.

[0512] As an optional embodiment, the second signal carries SSB information corresponding to the target beam direction.

[0513] As an optional embodiment, the second sending unit is further configured to:

[0514] sending the second signal to the second cell according to the downlink measurement result; or,

[0515] sending the second signal to the second cell according to the instruction of the primary cell; or

[0516] sending the second signal to the second cell according to historical data; or,

[0517] The second signal is sent to the second cell by broadcasting or multicasting.

[0518] In the embodiment of the present disclosure, the energy-saving cell sends a first signal, the first terminal measures the first signal, and sends a second signal to the energy-saving cell, triggering the cell receiving the second signal to send SSB, thereby activating the energy-saving cell; using this signal transmission method, the first cell can send the first signal so that the first terminal can establish downlink coarse synchronization with the energy-saving cell based on the first signal, and measure the signal strength of the energy-saving cell, thereby solving the problem that the energy-saving cell is unknown and unpredictable to the first terminal, improving the success rate of the first terminal in selecting the energy-saving cell to be activated, and thereby improving the data transmission rate of the first terminal.

[0519] It should be noted that the information transmission device provided in the embodiment of the present disclosure is a device capable of executing the above-mentioned information transmission method. All embodiments of the above-mentioned information transmission method are applicable to the device and can achieve the same or similar beneficial effects, which will not be repeated here.

[0520] As shown in FIG15 , an embodiment of the present disclosure further provides a first terminal, including a memory 1420 , a transceiver 1410 , and a processor 1400 :

[0521] The memory 1420 is used to store computer programs; the transceiver 1410 is used to send and receive data under the control of the processor 1400; the processor 1400 is used to read the computer program in the memory 1420 and perform the following operations:

[0522] receiving a first signal sent by a first cell, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state;

[0523] According to the first signal, a second signal is sent to the second cell; the second cell includes at least one of the following: a main cell, the first cell, and a secondary cell in the first secondary cell group; the second signal is used to trigger the secondary cell to be activated to send a synchronization signal and a broadcast channel block SSB, and the secondary cell to be activated includes: the first cell and / or the secondary cell in the first secondary cell group.

[0524] As an optional embodiment, the modulated signal includes at least one of the following:

[0525] On-off keying OOK signal;

[0526] Amplitude shift keying ASK signal;

[0527] Frequency shift keying FSK signal;

[0528] Phase Shift Keying PSK signal.

[0529] As an optional embodiment, in the case where the first signal includes: a single-level modulation signal,

[0530] The single-level modulated signal carries a first physical cell identifier PCI; and / or the single-level modulated signal occupies at least one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

[0531] As an optional embodiment, in the case where the first signal includes: a first-level modulation signal and a second-level modulation signal,

[0532] The first-level modulated signal carries the first part of the information of the second PCI, and the second-level modulated signal carries the second part of the information of the second PCI;

[0533] and / or,

[0534] The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

[0535] As an optional embodiment, in the case where the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511.

[0536] As an optional embodiment, when the first signal includes the primary synchronization signal and the secondary synchronization signal,

[0537] The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain;

[0538] and / or,

[0539] The primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain.

[0540] As an optional embodiment, the first signal includes at least one of a periodic signal, a semi-persistent signal, and a non-periodic signal.

[0541] As an optional embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

[0542] receiving first configuration information sent by a primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0543] According to the first configuration information, the first signal is received on the time domain resources and the frequency domain resources and / or the first signal is received within the first time window.

[0544] As an optional embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

[0545] receiving second configuration information sent by the primary cell, where the second configuration information includes: a second time window of the second signal;

[0546] According to the first signal, the second signal is sent to the second cell within the second time window.

[0547] As an optional embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

[0548] determining, according to the first signal, a physical cell identifier PCI carried by the first signal;

[0549] determining, according to the PCI, a timing for sending the second signal within the second time window;

[0550] The second signal is sent at the determined sending opportunity.

[0551] As an optional embodiment, when the first terminal receives multiple first signals, the processor is further configured to read the computer program in the memory and perform the following operations:

[0552] At least one secondary cell to be activated is determined according to the multiple first signals.

[0553] As an optional embodiment, the second signal carries SSB information corresponding to the target beam direction.

[0554] As an optional embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

[0555] sending the second signal to the second cell according to the downlink measurement result; or,

[0556] sending the second signal to the second cell according to the instruction of the primary cell; or

[0557] sending the second signal to the second cell according to historical data; or,

[0558] The second signal is sent to the second cell by broadcasting or multicasting.

[0559] In some embodiments, in FIG15 , the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 1400 and memory represented by memory 1420. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are all well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. The transceiver 1410 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. For different user devices, the user interface 1430 may also be an interface capable of connecting external or internal devices as required, and the connected devices include, but are not limited to, a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0560] The processor 1400 is responsible for managing the bus architecture and general processing, and the memory 1420 can store data used by the processor 1400 when performing operations.

[0561] Optionally, the processor 1400 may be a CPU, an ASIC, an FPGA, or a CPLD, and the processor may also adopt a multi-core architecture.

[0562] The processor calls the computer program stored in the memory to execute any of the methods provided by the embodiments of the present disclosure according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0563] In the embodiment of the present disclosure, the energy-saving cell sends a first signal, the first terminal measures the first signal, and sends a second signal to the energy-saving cell, triggering the cell receiving the second signal to send SSB, thereby activating the energy-saving cell; using this signal transmission method, the first cell can send the first signal so that the first terminal can establish downlink coarse synchronization with the energy-saving cell based on the first signal, and measure the signal strength of the energy-saving cell, thereby solving the problem that the energy-saving cell is unknown and unpredictable to the first terminal, improving the success rate of the first terminal in selecting the energy-saving cell to be activated, and thereby improving the data transmission rate of the first terminal.

[0564] It should be noted that the first terminal provided in the embodiment of the present disclosure is a terminal capable of executing the above-mentioned information transmission method. All embodiments of the above-mentioned information transmission method are applicable to the terminal and can achieve the same or similar beneficial effects, which will not be repeated here.

[0565] As shown in FIG16 , an embodiment of the present disclosure further provides a configuration device, which is applied to a primary cell. The device includes:

[0566] The third sending unit 1501 is configured to send first configuration information to the first cell and the first terminal, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0567] In some embodiments, the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

[0568] As an optional embodiment, the device further includes:

[0569] The seventh sending unit is used to send a first command to the first cell, where the first command is used to trigger the first cell to send the first signal.

[0570] As an optional embodiment, the device further includes:

[0571] A command determination unit is used to determine whether to send the first command based on first information; in some embodiments, the first information includes at least one of the following: wireless link quality information, uplink reference signal strength information, and cell service load information.

[0572] As an optional embodiment, the device further includes:

[0573] an information determining unit, configured to determine the first configuration information;

[0574] And / or, used to receive first indication information sent by the first cell, where the first indication information is used to indicate time domain resources and frequency domain resources of the first signal.

[0575] As an optional embodiment, the device further includes:

[0576] An eighth sending unit is configured to send second configuration information to the first terminal and the second cell, where the second configuration information includes: a second time window of the second signal;

[0577] In some embodiments, the second cell includes at least one of the following: a primary cell, the first cell, and a secondary cell in the first secondary cell group.

[0578] In the embodiment of the present disclosure, the main cell configures resources or time windows for transmitting the first signal and / or the second signal for the energy-saving cell and the first terminal, so that the first signal can be sent through the first cell, so that the first terminal can establish downlink coarse synchronization with the energy-saving cell based on the first signal, and measure the signal strength of the energy-saving cell, thereby solving the problem that the energy-saving cell is unknown and unpredictable to the first terminal, improving the success rate of the first terminal in selecting the energy-saving cell to be activated, and thereby improving the data transmission rate of the first terminal.

[0579] It should be noted that the configuration device provided in the embodiment of the present disclosure is a device capable of executing the above-mentioned configuration method. All embodiments of the above-mentioned configuration method are applicable to the device and can achieve the same or similar beneficial effects, and will not be repeated here.

[0580] As shown in FIG17 , an embodiment of the present disclosure further provides a primary cell, including a memory 1620 , a transceiver 1610 , and a processor 1600 :

[0581] The memory 1620 is used to store computer programs; the transceiver 1610 is used to send and receive data under the control of the processor 1600; the processor 1600 is used to read the computer program in the memory 1620 and perform the following operations:

[0582] Sending first configuration information to the first cell and the first terminal, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal;

[0583] In some embodiments, the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

[0584] As an optional embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

[0585] A first command is sent to a first cell, where the first command is used to trigger the first cell to send the first signal.

[0586] As an optional embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

[0587] Determine whether to send the first command based on the first information; in some embodiments, the first information includes at least one of the following: radio link quality information, uplink reference signal strength information, and cell traffic load information.

[0588] As an optional embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

[0589] determining the first configuration information;

[0590] and / or,

[0591] Receive first indication information sent by the first cell, where the first indication information is used to indicate time domain resources and frequency domain resources of the first signal.

[0592] As an optional embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

[0593] Sending second configuration information to the first terminal and the second cell, where the second configuration information includes: a second time window of the second signal;

[0594] In some embodiments, the second cell includes at least one of the following: a primary cell, the first cell, and a secondary cell in the first secondary cell group.

[0595] In some embodiments, in FIG17 , the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 1600 and memory represented by memory 1620. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are all well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1610 may be a plurality of components, i.e., a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium, such as a wireless channel, a wired channel, an optical cable, and the like. The processor 1600 is responsible for managing the bus architecture and general processing, and the memory 1620 may store data used by the processor 1600 when performing operations.

[0596] The processor 1600 may be a CPU, an ASIC, an FPGA, or a CPLD, and the processor may also adopt a multi-core architecture.

[0597] In the embodiment of the present disclosure, the main cell configures resources or time windows for transmitting the first signal and / or the second signal for the energy-saving cell and the first terminal, so that the first signal can be sent through the first cell, so that the first terminal can establish downlink coarse synchronization with the energy-saving cell based on the first signal, and measure the signal strength of the energy-saving cell, thereby solving the problem that the energy-saving cell is unknown and unpredictable to the first terminal, improving the success rate of the first terminal in selecting the energy-saving cell to be activated, and thereby improving the data transmission rate of the first terminal.

[0598] It should be noted that the primary cell provided in the embodiment of the present disclosure is a cell capable of executing the above configuration method. All embodiments of the above configuration method are applicable to the cell and can achieve the same or similar beneficial effects, which will not be repeated here.

[0599] It should be noted that the division of units in the embodiments of the present disclosure is schematic and is merely a logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of the present disclosure may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0600] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present disclosure is essentially or the part that contributes to the relevant technology or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the method described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0601] The embodiment of the present disclosure also provides a processor-readable storage medium, the processor-readable storage medium stores a computer program, the computer program is used to enable the processor to execute the various processes in the method embodiment described above, and can achieve the same technical effect. To avoid repetition, it is not repeated here. The processor-readable storage medium can be any available medium or data storage device that the processor can access, including but not limited to magnetic storage (such as floppy disk, hard disk, tape, magneto-optical disk (Magneto Optical, MO)), optical storage (such as compact disc (CD), digital video disc (DVD), Blu-ray Disc (BD), high-definition versatile disc (High-definition Versatile Disc, HVD), etc.), and semiconductor memory (such as ROM, erasable programmable read-only memory (Erasable Programmable Read-Only Memory, EPROM), electrically erasable programmable read-only memory (Electrically Erasable Programmable read only memory, EEPROM), non-volatile memory (NAND (Non-volatile Memory Device) FLASH), solid-state drive (Solid State Drives, SSD)), etc.

[0602] The embodiments of the present disclosure also provide a computer program product, including computer instructions. When the computer instructions are executed by a processor, the various processes in the method embodiments described above are implemented and can achieve the same technical effects. To avoid repetition, they are not described here.

[0603] Those skilled in the art will appreciate that embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) that, in some embodiments, contain computer-usable program code.

[0604] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer-executable instructions. These computer-executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0605] These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0606] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, whereby the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0607] In addition, it should be noted that, in the apparatus and method of the present invention, it is obvious that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present invention. Moreover, the steps of performing the above-mentioned series of processing can naturally be performed in chronological order according to the order of description, but it is not necessary to perform them in chronological order, and some steps can be performed in parallel or independently of each other. For those of ordinary skill in the art, it will be understood that all or any steps or components of the method and apparatus of the present invention can be implemented in any computing device (including processors, storage media, etc.) or a network of computing devices in hardware, firmware, software or a combination thereof, which can be achieved by those of ordinary skill in the art using their basic programming skills after reading the description of the present invention.

[0608] It should be noted that it should be understood that the division of the above modules is merely a division of logical functions. In actual implementation, they can be fully or partially integrated into one physical entity, or they can be physically separated. Moreover, these modules can all be implemented in the form of software called by a processing element; or they can all be implemented in the form of hardware; or some modules can be implemented in the form of software called by a processing element, and some modules can be implemented in the form of hardware. For example, a module can be a separately established processing element, or it can be integrated into a chip of the above-mentioned device. In addition, it can also be stored in the memory of the above-mentioned device in the form of program code, and called by a processing element of the above-mentioned device to perform the functions of the above-mentioned module. The implementation of other modules is similar. In addition, these modules can all or partly be integrated together, or they can be implemented independently. The processing element described here can be an integrated circuit with signal processing capabilities. During implementation, each step of the above method or each module above can be completed by an integrated logic circuit of hardware in the processor element or instructions in the form of software.

[0609] For example, each module, unit, sub-unit or sub-module can be one or more integrated circuits configured to implement the above method, such as one or more application-specific integrated circuits (ASICs), one or more digital signal processors (DSPs), or one or more field programmable gate arrays (FPGAs). For another example, when a module is implemented by scheduling program code through a processing element, the processing element can be a general-purpose processor, such as a central processing unit (CPU) or other processor that can call program code. For another example, these modules can be integrated together and implemented in the form of a system-on-a-chip (SOC).

[0610] The terms "first," "second," and the like in the specification and claims of the present disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of the present disclosure described herein may be implemented in a sequence other than that illustrated or described herein. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or device that includes a series of steps or units need not be limited to those steps or units explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to these processes, methods, products, or devices. In addition, the use of "and / or" in the specification and claims to indicate at least one of the connected objects, for example, A and / or B and / or C, means that seven situations are included: A alone, B alone, C alone, both A and B present, both B and C present, both A and C present, and all A, B, and C present. Similarly, the use of "at least one of A and B" in the specification and claims should be understood to mean "A alone, B alone, or both A and B present."

[0611] Obviously, those skilled in the art may make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. Thus, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and their equivalents, the present disclosure is intended to include such modifications and variations.

Claims

1. A signal transmission method, the method comprising: The first cell sends a first signal to the first terminal, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; The first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

2. The method according to claim 1, wherein The modulation signal includes at least one of the following: On-off keying OOK signal; Amplitude shift keying ASK signal; Frequency shift keying FSK signal; Phase Shift Keying PSK signal.

3. The method according to claim 1 or 2, wherein: In the case where the first signal comprises: a single-level modulation signal, The single-level modulated signal carries a first physical cell identifier PCI; and / or the single-level modulated signal occupies at least one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

4. The method according to claim 1 or 2, wherein: In the case where the first signal includes: a first-level modulation signal and a second-level modulation signal, The first-level modulated signal carries the first part of the information of the second PCI, and the second-level modulated signal carries the second part of the information of the second PCI; and / or, The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

5. The method according to claim 1 or 2, wherein: In a case where the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511.

6. The method according to claim 1 or 2, wherein: In the case where the first signal includes the primary synchronization signal and the secondary synchronization signal, The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain; and / or, The primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain.

7. The method according to claim 1 or 2, wherein: The first signal includes at least one of a periodic signal, a semi-persistent signal, and a non-periodic signal.

8. The method according to claim 1 or 2, wherein: Before the first cell sends the first signal to the first terminal, the method further includes: The first cell receives a first command sent by a primary cell, where the first command is used to trigger the first cell to send the first signal.

9. The method according to claim 1 or 2, wherein: Before the first cell sends the first signal to the first terminal, the method further includes: The first cell receives first configuration information sent by the primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal; The first cell sending a first signal to the first terminal includes: The first cell sends the first signal on the time domain resources and the frequency domain resources and / or sends the first signal within the first time window according to the first configuration information.

10. The method according to claim 1 or 2, wherein: Before the first cell sends the first signal to the first terminal, the method further includes: The first cell determines, by way of example, time domain resources and frequency domain resources of the first signal, and sends, to the primary cell, first indication information, where the first indication information is used to indicate the time domain resources and frequency domain resources of the first signal; The first cell sending a first signal to the first terminal includes: The first cell sends the first signal on the time domain resources and frequency domain resources.

11. The method according to claim 9, wherein The first cell sending the first signal within the first time window includes: Determining, by the first cell, a timing for sending the first signal within the first time window according to the PCI of the first cell; The first cell sends the first signal at the determined sending timing.

12. A signal transmission method, the method comprising: The first terminal receives a first signal sent by a first cell, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state; The first terminal sends a second signal to the second cell based on the first signal; the second cell includes at least one of the following: a main cell, the first cell, and a secondary cell in the first secondary cell group; the second signal is used to trigger the secondary cell to be activated to send a synchronization signal and a broadcast channel block SSB, and the secondary cell to be activated includes: the first cell and / or the secondary cell in the first secondary cell group.

13. The method according to claim 12, wherein: The modulation signal includes at least one of the following: On-off keying OOK signal; Amplitude shift keying ASK signal; Frequency shift keying FSK signal; Phase Shift Keying PSK signal.

14. The method according to claim 12 or 13, wherein: In the case where the first signal comprises: a single-level modulation signal, The single-level modulated signal carries a first physical cell identifier PCI; and / or the single-level modulated signal occupies at least one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

15. The method according to claim 12 or 13, wherein: In the case where the first signal includes: a first-level modulation signal and a second-level modulation signal, The first-level modulated signal carries the first part of the information of the second PCI, and the second-level modulated signal carries the second part of the information of the second PCI; and / or, The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

16. The method according to claim 12 or 13, wherein: In a case where the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511.

17. The method according to claim 12 or 13, wherein: In the case where the first signal includes the primary synchronization signal and the secondary synchronization signal, The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain; and / or, The primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain.

18. The method according to claim 12 or 13, wherein: The first signal includes at least one of a periodic signal, a semi-persistent signal, and a non-periodic signal.

19. The method according to claim 12 or 13, wherein: Before the first terminal receives the first signal sent by the first cell, the method further includes: The first terminal receives first configuration information sent by a primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal; The first terminal receiving a first signal sent by a first cell includes: The first terminal receives the first signal on the time domain resources and the frequency domain resources and / or receives the first signal within the first time window according to the first configuration information.

20. The method according to claim 12 or 13, wherein Before the first terminal sends a second signal to the second cell according to the first signal, the method further includes: The first terminal receives second configuration information sent by the primary cell, where the second configuration information includes: a second time window of the second signal; The first terminal sending a second signal to a second cell according to the first signal includes: The first terminal sends the second signal to the second cell within the second time window based on the first signal.

21. The method according to claim 20, wherein The sending, by the first terminal, the second signal to the second cell within the second time window according to the first signal includes: Determining, by the first terminal, a physical cell identifier PCI carried by the first signal according to the first signal; Determining, by the first terminal, a timing for sending the second signal within the second time window according to the PCI; The first terminal sends the second signal at the determined sending timing.

22. The method according to claim 12 or 13, wherein In a case where the first terminal receives multiple first signals, the method further includes: The first terminal determines at least one secondary cell to be activated according to the multiple first signals.

23. The method according to claim 12, wherein The second signal carries SSB information corresponding to the target beam direction.

24. The method according to claim 12, wherein The first terminal sending a second signal to the second cell includes: The first terminal sends the second signal to the second cell according to the downlink measurement result; or The first terminal sends the second signal to the second cell according to the instruction of the primary cell; or The first terminal sends the second signal to the second cell according to historical data; or The first terminal sends the second signal to the second cell by broadcasting or multicasting.

25. A configuration method, the method comprising: The primary cell sends first configuration information to the first cell and the first terminal, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal; The first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

26. The method according to claim 25, further comprising: The primary cell sends a first command to the first cell, where the first command is used to trigger the first cell to send the first signal.

27. The method according to claim 26, further comprising: The primary cell determines whether to send the first command based on first information; wherein the first information includes at least one of the following: radio link quality information, uplink reference signal strength information, and cell service load information.

28. The method according to claim 25, further comprising: Determining, by the primary cell, the first configuration information; and / or, The primary cell receives first indication information sent by the first cell, where the first indication information is used to indicate time domain resources and frequency domain resources of the first signal.

29. The method according to any one of claims 25 to 28, further comprising: The primary cell sends second configuration information to the first terminal and the second cell, where the second configuration information includes: a second time window of a second signal; The second cell includes at least one of the following: a primary cell, the first cell, and a secondary cell in the first secondary cell group.

30. A first cell, comprising a memory, a transceiver, and a processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Sending a first signal to a first terminal, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; The first cell includes: A secondary cell in an energy-saving state, and / or at least one secondary cell in the first secondary cell group in an energy-saving state.

31. The cell according to claim 30, wherein: The modulation signal includes at least one of the following: On-off keying OOK signal; Amplitude shift keying ASK signal; Frequency shift keying FSK signal; Phase Shift Keying PSK signal.

32. The cell according to claim 30 or 31, wherein: In the case where the first signal comprises: a single-level modulation signal, The single-level modulated signal carries a first physical cell identifier PCI; and / or the single-level modulated signal occupies at least one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

33. The cell according to claim 30 or 31, wherein: In the case where the first signal includes: a first-level modulation signal and a second-level modulation signal, The first-level modulated signal carries the first part of the information of the second PCI, and the second-level modulated signal carries the second part of the information of the second PCI; and / or, The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

34. The cell according to claim 30 or 31, wherein: In a case where the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511.

35. The cell according to claim 30 or 31, wherein: In the case where the first signal includes the primary synchronization signal and the secondary synchronization signal, The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain; and / or, The primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain.

36. The cell according to claim 30 or 31, wherein: The first signal includes at least one of a periodic signal, a semi-persistent signal, and a non-periodic signal.

37. The cell according to claim 30 or 31, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: A first command sent by a primary cell is received, where the first command is used to trigger the first cell to send the first signal.

38. The cell according to claim 30 or 31, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: receiving first configuration information sent by a primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal; According to the first configuration information, the first signal is sent on the time domain resources and the frequency domain resources and / or the first signal is sent within the first time window.

39. The cell according to claim 30 or 31, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: determining a time domain resource and a frequency domain resource of the first signal, and sending first indication information to a primary cell, where the first indication information is used to indicate the time domain resource and the frequency domain resource of the first signal; The first signal is sent on the time domain resources and the frequency domain resources.

40. The cell according to claim 38, wherein The processor is further configured to read the computer program in the memory and perform the following operations: Determining, according to the PCI of the first cell, a timing for sending the first signal within the first time window; The first signal is sent at the determined sending opportunity.

41. A first terminal, comprising a memory, a transceiver, and a processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: receiving a first signal sent by a first cell, where the first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; and the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state; According to the first signal, a second signal is sent to the second cell; the second cell includes at least one of the following: a main cell, the first cell, and a secondary cell in the first secondary cell group; the second signal is used to trigger the secondary cell to be activated to send a synchronization signal and a broadcast channel block SSB, and the secondary cell to be activated includes: the first cell and / or the secondary cell in the first secondary cell group.

42. The terminal according to claim 41, wherein The modulation signal includes at least one of the following: On-off keying OOK signal; Amplitude shift keying ASK signal; Frequency shift keying FSK signal; Phase Shift Keying PSK signal.

43. The terminal according to claim 41 or 42, wherein: In the case where the first signal comprises: a single-level modulation signal, The single-level modulated signal carries a first physical cell identifier PCI; and / or the single-level modulated signal occupies at least one orthogonal frequency division multiplexing (OFDM) symbol in the time domain.

44. The terminal according to claim 41 or 42, wherein: In the case where the first signal includes: a first-level modulation signal and a second-level modulation signal, The first-level modulated signal carries the first part of the information of the second PCI, and the second-level modulated signal carries the second part of the information of the second PCI; and / or, The first-level modulated signal occupies at least one OFDM symbol in the time domain, and the second-level modulated signal occupies at least one OFDM symbol in the time domain.

45. The terminal according to claim 41 or 42, wherein: In a case where the first signal includes the primary synchronization signal and / or the secondary synchronization signal, the primary synchronization signal and / or the secondary synchronization signal adopts a sequence with a length of 255 or 511.

46. ​​The terminal according to claim 41 or 42, wherein: In the case where the first signal includes the primary synchronization signal and the secondary synchronization signal, The primary synchronization signal occupies two OFDM symbols in the time domain, and the secondary synchronization signal occupies two OFDM symbols in the time domain; and / or, The primary synchronization signal and the secondary synchronization signal occupy adjacent OFDM symbols in the time domain.

47. The terminal according to claim 41 or 42, wherein: The first signal includes at least one of a periodic signal, a semi-persistent signal, and a non-periodic signal.

48. The terminal according to claim 41 or 42, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: receiving first configuration information sent by a primary cell, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal; According to the first configuration information, the first signal is received on the time domain resources and the frequency domain resources and / or the first signal is received within the first time window.

49. The terminal according to claim 41 or 42, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: receiving second configuration information sent by the primary cell, where the second configuration information includes: a second time window of the second signal; According to the first signal, the second signal is sent to the second cell within the second time window.

50. The terminal according to claim 49, wherein The processor is further configured to read the computer program in the memory and perform the following operations: determining, according to the first signal, a physical cell identifier PCI carried by the first signal; determining, according to the PCI, a timing for sending the second signal within the second time window; The second signal is sent at the determined sending opportunity.

51. The terminal according to claim 41 or 42, wherein: When the first terminal receives multiple first signals, the processor is further configured to read the computer program in the memory and perform the following operations: At least one secondary cell to be activated is determined according to the multiple first signals.

52. The terminal according to claim 41, wherein The second signal carries SSB information corresponding to the target beam direction.

53. The terminal according to claim 41, wherein The processor is further configured to read the computer program in the memory and perform the following operations: sending the second signal to the second cell according to the downlink measurement result; or, sending the second signal to the second cell according to the instruction of the primary cell; or sending the second signal to the second cell according to historical data; or, The second signal is sent to the second cell by broadcasting or multicasting.

54. A primary cell, comprising a memory, a transceiver, and a processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Sending first configuration information to the first cell and the first terminal, where the first configuration information includes at least one of the following: time domain resources and frequency domain resources of the first signal, and a first time window of the first signal; in, The first signal includes at least one of the following: a modulation signal, a primary synchronization signal, a secondary synchronization signal, a channel state information reference signal, and a tracking reference signal; the first cell includes: a secondary cell in an energy-saving state, and / or at least one secondary cell in a first secondary cell group in an energy-saving state.

55. The cell according to claim 54, wherein The processor is further configured to read the computer program in the memory and perform the following operations: A first command is sent to a first cell, where the first command is used to trigger the first cell to send the first signal.

56. The cell according to claim 55, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: Determine whether to send the first command based on first information; wherein the first information includes at least one of the following: radio link quality information, uplink reference signal strength information, and cell service load information.

57. The cell according to claim 54, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: determining the first configuration information; and / or, Receive first indication information sent by the first cell, where the first indication information is used to indicate time domain resources and frequency domain resources of the first signal.

58. The cell according to any one of claims 54 to 57, wherein: The processor is further configured to read the computer program in the memory and perform the following operations: Sending second configuration information to the first terminal and the second cell, where the second configuration information includes: a second time window of a second signal; The second cell includes at least one of the following: a primary cell, the first cell, and a secondary cell in the first secondary cell group.

59. A processor-readable storage medium storing a computer program, wherein the computer program is used to cause the processor to execute the method described in any one of claims 1 to 11, or the method described in any one of claims 12 to 24, or the method described in any one of claims 25 to 29.

60. A computer program product comprising computer instructions, which, when executed by a processor, implement the steps of the method according to any one of claims 1 to 11, or the steps of the method according to any one of claims 12 to 24, or the steps of the method according to any one of claims 25 to 29.

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