Signal sending method, signal receiving method, terminal, network device, and network architecture

Abstract

Provided in the present disclosure are a signal sending method, a signal receiving method, a terminal, a network device, and a network architecture. The signal sending method comprises: a network device sending a synchronization signal according to a first period, wherein the first period is related to a first parameter, and the first period is variable.

Description

Signal sending, receiving method, terminal, network device and network architecture

[0001] The present disclosure claims priority from a Chinese patent application No. 202410408436.8 entitled "Signal sending, receiving method, terminal, network device and network architecture" filed on April 07, 2024 with the China Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of communication, and in particular to a signal sending, receiving method, terminal, network device and network architecture. BACKGROUND

[0003] Cell search is an important process for a user equipment (UE) to access a wireless network, which enables the UE to synchronize with a base station and establish a connection with the network. A terminal first performs a cell search process in a 5th generation mobile communication technology (5G) standalone (SA) cell, and then initiates random access. In the traditional 5G access network architecture, the cell providing basic coverage has a fixed synchronization signal block (SSB) period and / or bandwidth, and uses a large number of beamforming technologies, which increases energy consumption and makes the entire network system relatively low in energy efficiency. SUMMARY

[0004] The purpose of the present disclosure is to provide a signal sending, receiving method, terminal, network device and network architecture, which solves the problem of low network system energy efficiency.

[0005] An embodiment of the present disclosure provides a signal sending method, which is performed by a network device, and the method comprises:

[0006] The network device sends a synchronization signal according to a first period.

[0007] The first period is related to a first parameter, and the first period is variable.

[0008] In some embodiments, the first parameter comprises at least one of the following:

[0009] Traffic volume;

[0010] Service emergency level;

[0011] Number of terminals served;

[0012] Time information;

[0013] a location of the network device;

[0014] an energy saving requirement.

[0015] In some embodiments, a bandwidth of the synchronization signal is variable, the bandwidth of the synchronization signal is an integer multiple or an even multiple of a minimum bandwidth value, and the minimum bandwidth value is predefined or preconfigured.

[0016] In some embodiments, the synchronization signal carries a Master Information Block (MIB), and the MIB includes an initial control information resource set.

[0017] The initial control information resource set includes at least one of the following:

[0018] band information, used to indicate a frequency band in which system information is located;

[0019] bandwidth information, used to indicate a bandwidth of the system information;

[0020] a time domain position, used to indicate a time domain position of the system information;

[0021] a frequency domain position, used to indicate a frequency domain position of the system information.

[0022] In some embodiments, the frequency band information indicates that the system information is located in a frequency band different from a frequency band in which the synchronization signal is transmitted.

[0023] In some embodiments, the method further includes:

[0024] receiving a request message transmitted by a first device; and changing a transmission period of the synchronization signal and / or a bandwidth of the synchronization signal according to the request message;

[0025] or,

[0026] the network device determines to change the transmission period of the synchronization signal and / or the bandwidth of the synchronization signal;

[0027] The first device includes a terminal and / or another network device other than the network device.

[0028] In some embodiments, the method further includes:

[0029] transmitting first information to a first device, the first information being used to indicate a changed transmission period of the synchronization signal and / or a changed bandwidth of the synchronization signal.

[0030] In some embodiments, the first period is an integer multiple or even multiple of a minimum transmission period of the synchronization signal, and the minimum transmission period is predefined or preconfigured.

[0031] In some embodiments, the transmission frequency band of the synchronization signal is a low frequency band.

[0032] In some embodiments, the network device supports a radio frequency structure with an omnidirectional radio frequency antenna, or the network device supports a radio frequency structure with a directional antenna.

[0033] Embodiments of the present disclosure provide a signal receiving method performed by a terminal, the method comprising:

[0034] The terminal detects a synchronization signal transmitted by a network device according to a second period; the second period is a minimum transmission period of the synchronization signal, or an integer multiple or even multiple of the minimum transmission period.

[0035] The terminal performs a downlink synchronization process according to the synchronization signal.

[0036] In some embodiments, the bandwidth of the synchronization signal is variable, and the bandwidth of the synchronization signal is an integer multiple or even multiple of a minimum bandwidth value, and the minimum bandwidth value is predefined or preconfigured.

[0037] In some embodiments, the method further comprises:

[0038] According to the synchronization signal, an initial control information resource set is obtained;

[0039] According to the initial control information resource set, system information is received.

[0040] In some embodiments, the synchronization signal carries a MIB, and the MIB includes an initial control information resource set.

[0041] The initial control information resource set includes at least one of the following:

[0042] Frequency band information for indicating a frequency band where the system information is located;

[0043] Bandwidth information for indicating a bandwidth of the system information;

[0044] Time domain position for indicating a time domain position of the system information;

[0045] Frequency domain position for indicating a frequency domain position of the system information.

[0046] In some embodiments, the frequency band information indicates that the frequency band where the system information is located is different from the transmission frequency band of the synchronization signal.

[0047] In some embodiments, the method further comprises:

[0048] sending a request message to a network device, the request message being used to request to change a transmission period of the synchronization signal and / or a bandwidth of the synchronization signal.

[0049] In some embodiments, the method further comprises:

[0050] receiving first information sent by the network device, the first information being used to indicate the changed transmission period of the synchronization signal and / or the changed bandwidth of the synchronization signal.

[0051] Embodiments of the present disclosure provide a network architecture, comprising: a network coverage layer; or, the network coverage layer and a data transmission layer;

[0052] wherein a network device under the network coverage layer supports an adaptive transmission period of the synchronization signal, the transmission period of the synchronization signal being related to a first parameter, and the transmission period of the synchronization signal being variable.

[0053] In some embodiments, the transmission period of the synchronization signal is an integer multiple or an even multiple of a minimum transmission period of the synchronization signal, the minimum transmission period being predefined or preconfigured.

[0054] In some embodiments, the network coverage layer operates in a low frequency band.

[0055] In some embodiments, the network device under the network coverage layer supports a radio frequency structure with an omnidirectional radio frequency antenna, or the network device under the network coverage layer supports a radio frequency structure with a directional antenna.

[0056] In some embodiments, the first parameter comprises at least one of:

[0057] traffic volume;

[0058] service emergency level;

[0059] number of terminals of a service;

[0060] time information;

[0061] location of the network device;

[0062] energy saving demand.

[0063] In some embodiments, the bandwidth of the synchronization signal is variable, and the bandwidth of the synchronization signal is an integer multiple or an even multiple of a minimum bandwidth value, the minimum bandwidth value being predefined or preconfigured.

[0064] In some embodiments, the synchronization signal carries a MIB, and the MIB comprises an initial control information resource set.

[0065] The initial control information resource set comprises at least one of the following:

[0066] band information, used for indicating a frequency band where the system information is located;

[0067] band information, used for indicating a frequency band where the system information is located;

[0068] time domain position, used for indicating a time domain position of the system information;

[0069] frequency domain position, used for indicating a frequency domain position of the system information.

[0070] In some embodiments, the band information indicates that the frequency band where the system information is located is different from the transmission frequency band of the synchronization signal.

[0071] In some embodiments, the network device under the network coverage layer supports receiving a request message sent by the first device, and the request message is used for requesting to change the transmission period of the synchronization signal and / or the bandwidth of the synchronization signal.

[0072] In some embodiments, the network device under the network coverage layer supports sending first information to the first device, and the first information is used for indicating the changed transmission period of the synchronization signal and / or the changed bandwidth of the synchronization signal.

[0073] Embodiments of the present disclosure provide a network device, comprising: a memory, a transceiver, and a processor:

[0074] a memory for storing a computer program; a transceiver for receiving and sending data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0075] a memory for storing a computer program; a transceiver for receiving and sending data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0076] transmitting a synchronization signal according to a first period;

[0077] wherein the first period is related to a first parameter, and the first period is variable.

[0078] In some embodiments, the first parameter comprises at least one of the following:

[0079] traffic volume;

[0080] traffic emergency degree;

[0081] number of terminals of a service;

[0082] time information;

[0083] a location of the network device;

[0084] an energy saving requirement.

[0085] In some embodiments, a bandwidth of the synchronization signal is variable, the bandwidth of the synchronization signal is an integer multiple or an even multiple of a minimum bandwidth value, and the minimum bandwidth value is predefined or preconfigured.

[0086] In some embodiments, the synchronization signal carries a master information block (MIB), and the MIB includes an initial control information resource set.

[0087] The initial control information resource set includes at least one of the following:

[0088] band information, used to indicate a frequency band in which system information is located;

[0089] bandwidth information, used to indicate a bandwidth of the system information;

[0090] a time domain location, used to indicate a time domain location of the system information;

[0091] a frequency domain location, used to indicate a frequency domain location of the system information.

[0092] In some embodiments, the frequency band information indicates that the frequency band in which the system information is located is different from a frequency band in which the synchronization signal is transmitted.

[0093] In some embodiments, the processor is configured to read a computer program in the memory and perform the following operations:

[0094] receiving a request message transmitted by a first device; and changing a transmission period of the synchronization signal and / or a bandwidth of the synchronization signal according to the request message;

[0095] or,

[0096] The network device determines to change the transmission period of the synchronization signal and / or the bandwidth of the synchronization signal.

[0097] The first device includes a terminal and / or another network device other than the network device.

[0098] In some embodiments, the processor is configured to read a computer program in the memory and perform the following operations:

[0099] transmitting first information to a first device, the first information being used to indicate a changed transmission period of the synchronization signal and / or a changed bandwidth of the synchronization signal.

[0100] In some embodiments, the first period is an integer multiple or even multiple of a minimum transmission period of the synchronization signal, and the minimum transmission period is predefined or preconfigured.

[0101] In some embodiments, the transmission frequency band of the synchronization signal is a low frequency band.

[0102] In some embodiments, the network device supports a radio frequency structure with an omnidirectional radio frequency antenna, or the network device supports a radio frequency structure with a directional antenna.

[0103] Embodiments of the present disclosure provide a terminal, comprising: a memory, a transceiver, a processor:

[0104] a memory for storing a computer program; a transceiver for receiving and transmitting data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

[0105] detecting a synchronization signal transmitted by a network device according to a second period; the second period is a minimum transmission period of the synchronization signal, or an integer multiple or even multiple of the minimum transmission period;

[0106] performing a downlink synchronization process according to the synchronization signal.

[0107] In some embodiments, the bandwidth of the synchronization signal is variable, and the bandwidth of the synchronization signal is an integer multiple or even multiple of a minimum bandwidth value, and the minimum bandwidth value is predefined or preconfigured.

[0108] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0109] obtaining an initial control information resource set according to the synchronization signal;

[0110] receiving system information according to the initial control information resource set.

[0111] In some embodiments, the synchronization signal carries a MIB, and the MIB includes an initial control information resource set.

[0112] The initial control information resource set includes at least one of the following:

[0113] frequency band information for indicating a frequency band where the system information is located;

[0114] bandwidth information for indicating a bandwidth of the system information;

[0115] time domain location for indicating a time domain location of the system information;

[0116] frequency domain location for indicating a frequency domain location of the system information.

[0117] In some embodiments, the frequency band information indicates that the system information is located in a frequency band different from the frequency band in which the synchronization signal is transmitted.

[0118] In some embodiments, the processor is configured to read a computer program in the memory and perform the following operations:

[0119] sending a request message to the network device, the request message being used to request to change the transmission period of the synchronization signal and / or the bandwidth of the synchronization signal.

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

[0121] receiving first information transmitted by the network device, the first information being used to indicate the changed transmission period of the synchronization signal and / or the changed bandwidth of the synchronization signal.

[0122] Embodiments of the present disclosure provide a signal transmission apparatus, executed by a network device, comprising:

[0123] a first transmission unit configured to transmit a synchronization signal according to a first period;

[0124] wherein the first period is related to a first parameter, and the first period is variable.

[0125] Embodiments of the present disclosure provide a signal reception apparatus, executed by a terminal, comprising:

[0126] a second transmission unit configured to detect a synchronization signal transmitted by a network device according to a second period; the second period is a minimum transmission period of the synchronization signal, or an integer multiple or even multiple of the minimum transmission period;

[0127] a first processing unit configured to perform a downlink synchronization process according to the synchronization signal.

[0128] Embodiments of the present disclosure provide a processor-readable storage medium, having a computer program stored thereon, the computer program being executed by a processor to implement the steps of the above-mentioned signal transmission method, or to implement the steps of the above-mentioned signal reception method.

[0129] Embodiments of the present disclosure provide a computer program product, comprising computer instructions, the computer instructions being executed by a processor to implement the steps of the above-mentioned signal transmission method, or to implement the steps of the above-mentioned signal reception method.

[0130] The above-mentioned technical solutions of the present disclosure have the following advantages:

[0131] The period of sending the synchronization signal by the network device is variable, and the period of sending the synchronization signal is related to the first parameter. Through the adaptive period of sending the synchronization signal by the network device, network energy saving is realized, and the energy efficiency of the whole network system is improved. BRIEF DESCRIPTION OF DRAWINGS

[0132] Fig. 1 shows a flowchart of a signal sending method according to an embodiment of the present disclosure;

[0133] Fig. 2 shows a flowchart of terminal network camping according to an embodiment of the present disclosure;

[0134] Fig. 3 shows a flowchart of changing the period and / or bandwidth of sending the synchronization signal by the network device;

[0135] Fig. 4 shows another flowchart of changing the period and / or bandwidth of sending the synchronization signal by the network device;

[0136] Fig. 5 shows a flowchart of a signal receiving method according to an embodiment of the present disclosure;

[0137] Fig. 6 shows a structural diagram of a signal sending device according to an embodiment of the present disclosure;

[0138] Fig. 7 shows a structural diagram of a signal receiving device according to an embodiment of the present disclosure;

[0139] Fig. 8 shows a structural diagram of a network device according to an embodiment of the present disclosure;

[0140] Fig. 9 shows a structural diagram of a terminal according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0141] To make the technical problems to be solved by the present disclosure, the technical solutions and advantages clearer, specific embodiments will be described in detail below with reference to the drawings. In the following description, specific details such as specific configurations and components are provided only to help a comprehensive understanding of the embodiments of the present disclosure. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. In addition, in order to be clear and concise, the description of known functions and structures is omitted.

[0142] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present disclosure. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0143] In various embodiments of the present disclosure, it should be understood that the size of the serial number of the following processes does not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure.

[0144] In the embodiments of the present disclosure, the term "and / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after it.

[0145] In the embodiments of the present disclosure, the term "multiple" refers to two or more, and other quantifiers are similar.

[0146] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below in combination with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present disclosure.

[0147] Embodiments of the present disclosure provide a signal sending method, a signal receiving method, a terminal, a network device and a network architecture, to solve the problem of low energy efficiency of a network system.

[0148] Among them, the method and the device are based on the same application concept, because the principles of the method and the device for solving problems are similar, therefore the implementation of the device and the method can be referred to each other, and the repeated parts will not be described.

[0149] As shown in FIG. 1, the embodiments of the present disclosure provide a signal sending method applied to a network device, specifically including the following steps:

[0150] Step 101, the network device sends a synchronization signal according to a first period;

[0151] Among them, the first period is related to a first parameter, and the first period is variable.

[0152] In this embodiment, the network device can be a network device under a low-power coverage layer, and the network device can be a base station. The low-power coverage layer can be a coverage network layer in a low-power network architecture. By setting a coverage network, information transmission between a terminal and a network device is realized.

[0153] The first period is a period in which the network device transmits the synchronization signal, and the period in which the network device transmits the synchronization signal is variable. Specifically, the network device can determine the period in which the synchronization signal is transmitted based on the first parameter, thereby achieving real-time adjustment of the transmission period. Compared with a fixed synchronization signal transmission period, the adaptive synchronization signal transmission period can significantly improve network energy efficiency.

[0154] Because the period in which the network device transmits the synchronization signal is variable, the terminal cannot determine the accurate period in which the synchronization signal is detected, and the terminal blindly detects the synchronization signal. The terminal is a terminal that can adaptively search for the synchronization signal. In some embodiments, the terminal can detect the synchronization signal transmitted by the network device according to a second period. The second period can be the minimum transmission period of the synchronization signal or an integer multiple of the minimum transmission period. For example, the terminal first detects the synchronization signal using the minimum transmission period X, continues to detect the synchronization signal using the period 2X if the synchronization signal is not detected, continues to detect the synchronization signal using the period 3X if the synchronization signal is still not detected, and so on, until the terminal detects the synchronization signal and performs the downlink synchronization process.

[0155] Embodiments of the present disclosure, the period in which the network device transmits the synchronization signal is variable, and the period in which the synchronization signal is transmitted is related to the first parameter. Through the adaptive synchronization signal transmission period of the network device, network energy saving is achieved, and the energy efficiency of the entire network system is improved.

[0156] In some embodiments, the first parameter includes at least one of the following:

[0157] (1) Traffic volume; the network device can determine the period in which the synchronization signal is transmitted according to the current traffic volume to be processed, for example, the current traffic volume is large, and in order to avoid resource waste, the network device can appropriately increase the transmission period of the synchronization signal.

[0158] (2) Business emergency level; the network device can determine the period in which the synchronization signal is transmitted according to the current business emergency level to be processed, for example, the business emergency level is high, and the network device needs to process the business in priority, in order to ensure that the terminal accesses the network as soon as possible, the network device can appropriately reduce the transmission period of the synchronization signal; or the business emergency level is low, and the network device can increase the transmission period of the synchronization signal.

[0159] (3) Number of terminals served; the network device can determine the period in which the synchronization signal is transmitted according to the current number of terminals served, for example, the number of terminals served by the network device is large, in order to ensure that each terminal can access the network as soon as possible, the transmission period of the synchronization signal can be reduced.

[0160] (4) Time information; the network device can determine the period of sending the synchronization signal according to the time period currently in. For example: for a certain time period, the network side does not want more terminals to access, then the network side device can increase the period of sending the synchronization signal, such as at night, the frequency of terminal using network is lower, then the network device can increase the period of sending the synchronization signal.

[0161] (5) The location of the network device; the network device can determine the period of sending the synchronization signal based on the location currently in. For example: for the area around the examination, the network device can increase the period of sending the synchronization signal to avoid too many terminals accessing the network affecting the examination signal; for the residential area, the network device can reduce the period of sending the synchronization signal to ensure the experience of residents using the network.

[0162] (6) Energy saving demand; the network device can determine the period of sending the synchronization signal based on the energy saving demand. For example: some functions of the network consume more energy and need to save energy, then the network device can increase the period of sending the synchronization signal; or the current network is relatively idle and the business is less, then the network device can appropriately reduce the period of sending the synchronization signal.

[0163] It should be noted that the network device can also determine the period of sending the synchronization signal based on multiple of the above parameters. For example: based on the time information and the location of the network device, for the residential area in the daytime, the network device can reduce the period of sending the synchronization signal to ensure the experience of residents using the network; for the residential area at night, the network device can reduce the period of sending the synchronization signal to save energy. Other parameter combinations are not described one by one.

[0164] In this embodiment, the network device determines the period of sending the synchronization signal based on the first parameter, realizes adaptive sending of the synchronization signal, and compared with the fixed period of sending the synchronization signal, the adaptive period of sending the synchronization signal can save the network energy, protect the user experience, and meet the network use demand of multiple scenes.

[0165] In some embodiments, the first period is an integer multiple or even multiple of the minimum sending period of the synchronization signal, and the minimum sending period is predefined or preconfigured.

[0166] In this embodiment, the value of the transmission period of the synchronization signal can be set, for example, the minimum transmission period of the synchronization signal is set as X, and other values of the period can be an integer multiple (such as 2 times, 3 times, 4 times, etc.), an even multiple (such as 2 times, 4 times, 6 times, etc.) of the minimum transmission period, and the like. The terminal and the network device should have the same understanding of the transmission period of the synchronization signal, that is, the terminal needs to be configured with the value of the transmission period of the synchronization signal so that the terminal can successfully detect the synchronization signal. For example, if the minimum transmission period is 10 ms, other values should be an integer multiple of 10 ms, such as 20 ms, 30 ms, 40 ms, etc. Assuming that the network device determines to transmit the synchronization signal with a period of 30 ms according to the first parameter, when the terminal detects the synchronization signal, it first detects the synchronization signal with a minimum transmission period of 10 ms, does not detect the synchronization signal, then detects the synchronization signal with a period of 20 ms, does not detect the synchronization signal, and then detects the synchronization signal with a period of 30 ms, and successfully detects the synchronization signal.

[0167] In some embodiments, the transmission frequency band of the synchronization signal is a low frequency band.

[0168] In this embodiment, the low frequency band can be a frequency band less than a preset value, or a low frequency band corresponding to an existing frequency band division manner, for example, a frequency range of 20 Hz to 160 Hz, 600 M, 700 M, 800 M of FR1, and the like, which is not limited herein.

[0169] As an optional embodiment, the bandwidth of the synchronization signal is variable, and the bandwidth of the synchronization signal is an integer multiple or an even multiple of a minimum bandwidth value, and the minimum bandwidth value is predefined or preconfigured.

[0170] In this embodiment, the bandwidth of the synchronization signal transmitted by the network device is variable, that is, the occupied bandwidth of the synchronization signal is not fixed. The value of the bandwidth of the synchronization signal can be preconfigured, for example, the minimum bandwidth value is configured as Y, and other values of the bandwidth are an integer multiple or an even multiple of the minimum bandwidth value.

[0171] In some embodiments, the occupied bandwidth of the synchronization signal can be related to the first parameter. The network device can adaptively adjust the occupied bandwidth of the synchronization signal to achieve energy saving.

[0172] In some embodiments, the bandwidth of the synchronization signal can also be a fixed value.

[0173] In some embodiments, the network device supports a radio frequency structure with an omnidirectional radio frequency antenna, or the network device supports a radio frequency structure with a directional antenna. In this embodiment, the network device under the coverage network supports a radio frequency structure with an omnidirectional radio frequency antenna, or supports a radio frequency structure with fewer directional antennas, thereby achieving network energy saving. In some embodiments, the network device supports a radio frequency structure with an omnidirectional radio frequency antenna, or the network device supports a radio frequency structure with a directional antenna. In this embodiment, the network device under the coverage network supports a radio frequency structure with an omnidirectional radio frequency antenna, or supports a radio frequency structure with fewer directional antennas, thereby achieving network energy saving.

[0174] As an optional embodiment, the synchronization signal carries a master information block (MIB), and the MIB includes an initial control information resource set;

[0175] The initial control information resource set includes at least one of the following:

[0176] 1) frequency band information, used to indicate a frequency band where system information is located;

[0177] 2) bandwidth information, used to indicate a bandwidth of the system information;

[0178] 3) time domain position, used to indicate a time domain position of the system information;

[0179] 4) frequency domain position, used to indicate a frequency domain position of the system information.

[0180] In this embodiment, a network device sends a synchronization signal, and MIB information of the synchronization signal includes a configurable initial control information resource set. Information in the initial control information resource set can be used to indicate a time domain position, a frequency domain position, a bandwidth, a frequency band, etc. of system information. After a terminal receives the synchronization signal, the terminal performs downlink synchronization based on the synchronization signal, and can monitor a system information block (SIB) according to information in the initial control information resource set.

[0181] In some embodiments, the frequency band information indicates that the system information is located in a frequency band different from a frequency band where the synchronization signal is sent.

[0182] In this embodiment, in the initial control information resource set carried by the MIB information, indication is allowed that the system information is in a frequency band and / or position different from the synchronization signal, that is, the terminal can receive subsequent system information in the indicated frequency band and / or position. In this embodiment, related information (such as a frequency band, a time domain position, and a frequency domain position) of the system information is separated from related information of the synchronization signal, and is independently configured.

[0183] As an optional embodiment, the method further includes:

[0184] receiving a request message sent by a first device; and changing a sending period of the synchronization signal and / or a bandwidth of the synchronization signal according to the request message;

[0185] or,

[0186] The network device determines to change the sending period of the synchronization signal and / or the bandwidth of the synchronization signal;

[0187] The first device includes a terminal and / or another network device other than the network device.

[0188] In this embodiment, the first device can change the transmission period and / or bandwidth of the synchronization signal based on a request of the first device and / or its own decision. The first device is, for example, a UE, another network layer, a cell, and / or a network element. In some embodiments, the request message can carry the transmission period and / or bandwidth of the synchronization signal that the first device expects to change.

[0189] In some embodiments, the method further includes: sending first information to the first device, the first information being used to indicate the changed transmission period of the synchronization signal and / or the changed bandwidth of the synchronization signal.

[0190] In this embodiment, after the network device changes the transmission period and / or bandwidth of the synchronization signal, the network device can send a response message or a notification message to the first device to indicate the changed transmission period and / or bandwidth of the synchronization signal. For example, the network device can notify the corresponding first device of the change information of the transmission period of the synchronization signal and / or the bandwidth occupied by the synchronization signal through system information or dedicated Radio Resource Control (RRC) signaling messages.

[0191] The network residence process of the terminal is illustrated below.

[0192] As shown in FIG. 2, the network residence process of the terminal includes:

[0193] Step 21: The network device sends a synchronization signal.

[0194] In some embodiments, the network device can determine the period of sending the synchronization signal based on a first parameter, and periodically broadcast a Synchronization Signal Block (SSB). The SSB contains relevant information of the synchronization information and system information, which helps the UE to identify the network and synchronize with the network.

[0195] Step 22: The UE detects the synchronization signal according to the minimum transmission period of the synchronization signal or an integer multiple of the minimum transmission period, and performs a downlink synchronization process based on the detected synchronization signal. In some embodiments, the UE also performs a downlink synchronization operation according to the minimum bandwidth of the synchronization signal or an integer multiple thereof.

[0196] In this step, when starting up or entering a new area, the UE scans the available frequency range to detect the SSB from different base stations to identify the available cells; the UE searches for a narrowband synchronization signal within the SSB to obtain more accurate timing information, thereby completing the frequency and time synchronization.

[0197] Step 23: UE succeeds in synchronization, and acquires, based on the synchronization signal block, a low power coverage layer (LPRL) physical cell identifier (PCI), a transmission period of the synchronization signal, an occupied bandwidth of the synchronization signal, MIB information, and the like.

[0198] The UE acquires, according to the MIB information, configuration information of an initial control information resource set, which includes one or more of a frequency band in which system information is located, a bandwidth, a time domain resource, a frequency domain resource, and the like.

[0199] Step 24: The UE receives subsequent SIB information according to the information of the initial control information resource set, and thereby acquires corresponding configuration information of a paging and access process.

[0200] If the initial control information resource set in step 23 contains information of a frequency band in which system information is located, the SIB information is received at the indicated frequency band, and corresponding configuration information of a paging and access process is acquired.

[0201] In some embodiments, if a synchronization process needs to be performed, the terminal repeats steps 22 to 23 described above.

[0202] Step 25: The UE completes a camping process and camps in a current cell.

[0203] In this embodiment, the network device adaptively transmits a synchronization signal, and the terminal completes downlink synchronization based on the detected synchronization signal; and the terminal receives SIB based on information indicated by an initial control information resource set carried in the synchronization signal, and completes network camping.

[0204] As shown in FIG. 3, an implementation process in which a first device is a terminal and the terminal requests a network device to change a transmission period and / or bandwidth of a synchronization signal is described, including:

[0205] Step 31: The UE sends a request message to the network device according to its own needs, to request the network device of a low power coverage layer to change the transmission period and / or bandwidth of the synchronization signal.

[0206] Step 32: The network device decides, according to its own strategy, whether to change the transmission period and / or bandwidth of the synchronization signal.

[0207] Step 33: The network device sends a response message to the UE through SIB1 information.

[0208] In this step, if the network device decides to change the transmission period and / or bandwidth of the synchronization signal, it returns confirmation information to the UE corresponding to the request message. If the network device decides not to change the transmission period and / or bandwidth of the synchronization signal, it returns rejection information to the UE corresponding to the request message.

[0209] In some embodiments, if the network device decides to change the transmission period and / or bandwidth of the synchronization signal, the network device sends the configuration information of the changed transmission period and / or bandwidth of the synchronization signal to the air interface through system information SIB1; if the network device decides not to change the transmission period and / or bandwidth of the synchronization signal, the network device does not send any information.

[0210] Step 34: The UE learns the changed transmission period and / or bandwidth of the synchronization signal.

[0211] In some embodiments, the UE performs subsequent synchronization and network camping processes according to the changed transmission period and / or bandwidth configuration of the synchronization signal.

[0212] In this embodiment, the terminal can request the network device to change the transmission period and / or bandwidth of the synchronization signal; after receiving the request message, the network device decides whether to change the transmission period and / or bandwidth of the synchronization signal based on its own strategy, and feeds back a response message to the terminal.

[0213] As shown in FIG. 4, taking the case that a neighboring cell or other network element requests the network device to change the transmission period and / or bandwidth of the synchronization signal as an example, the process of changing the transmission period and / or bandwidth of the synchronization signal by the network device includes:

[0214] Step 41: The neighboring cell or other network element (such as a radio network management function) sends a request message to the network device, requesting the network device of the low-power coverage layer to change the transmission period and / or bandwidth of the synchronization signal.

[0215] Step 42: The network device decides whether to change the transmission period and / or bandwidth of the synchronization signal according to its own strategy.

[0216] Step 43: The network device sends the changed transmission period and / or bandwidth of the synchronization signal to the UE through SIB1 information.

[0217] In this step, if the network device decides to change the transmission period and / or bandwidth of the synchronization signal, the network device sends the configuration information of the changed transmission period and / or bandwidth of the synchronization signal to the air interface through system information SIB1; if the network device decides not to change the transmission period and / or bandwidth of the synchronization signal, the network device does not send any information.

[0218] Step 44: The UE learns the changed transmission period and / or bandwidth of the synchronization signal.

[0219] In some embodiments, the UE performs subsequent synchronization and network camping processes according to the changed transmission period and / or bandwidth configuration of the synchronization signal.

[0220] In this embodiment, the neighboring cell or other network element (such as a radio network management function) can request the network device to change the transmission period and / or bandwidth of the synchronization signal; after receiving the request message, the network device determines whether to change the transmission period and / or bandwidth of the synchronization signal based on its own strategy, and sends the changed transmission period and / or bandwidth of the synchronization signal to the terminal.

[0221] In some embodiments, the network device can also itself determine whether to change the transmission period and / or bandwidth of the synchronization signal. For example, the network device determines whether to change the transmission period and / or bandwidth of the synchronization signal according to its own strategy. In this case, the network does not perform step 31 in FIG. 3 or step 41 in FIG. 4, and the specific implementation process is not described here.

[0222] In this embodiment, by setting the configurable transmission period and / or bandwidth of the synchronization signal of the network device, the energy efficiency of the entire network can be significantly improved, overcoming the energy saving defects of the traditional 5G access network architecture design.

[0223] In the embodiments of the present disclosure, the transmission period of the synchronization signal of the network device is variable, and the transmission period of the synchronization signal is related to the first parameter. Through the adaptive transmission period of the synchronization signal of the network device, network energy saving is achieved, and the energy efficiency of the entire network system is improved.

[0224] As shown in FIG. 5, the embodiments of the present disclosure also provide a signal receiving method, which is executed by a terminal and includes:

[0225] Step 501, the terminal detects the synchronization signal transmitted by the network device according to a second period; the second period is the minimum transmission period of the synchronization signal, or an integer multiple or even multiple of the minimum transmission period;

[0226] Step 502, the terminal performs a downlink synchronization process according to the synchronization signal.

[0227] In this embodiment, the network device can be a network device under a low-power coverage layer, and the network device can be a base station. The low-power coverage layer can be a coverage network layer in a low-power network architecture. By setting the coverage network, information transmission between the terminal and the network device is achieved.

[0228] The network device can determine the transmission period of the synchronization signal based on the first parameter, thereby realizing real-time adjustment of the transmission period. Compared with the fixed transmission period of the synchronization signal, the adaptive transmission period of the synchronization signal can significantly improve the energy efficiency of the network.

[0229] The terminal can detect the synchronization signal transmitted by the network device according to a second period. The second period can be the minimum transmission period of the synchronization signal or an integer multiple or even multiple of the minimum transmission period. For example, the terminal first detects the synchronization signal using the minimum transmission period X, if the synchronization signal is not detected, the terminal continues to detect the synchronization signal using the period 2X, if the synchronization signal is still not detected, the terminal continues to detect the synchronization signal using the period 3X, and so on, until the terminal detects the synchronization signal, and performs the downlink synchronization process.

[0230] In an embodiment of the present disclosure, the period of the synchronization signal transmitted by the network device is variable, the terminal detects the synchronization signal based on the minimum transmission period or an integer multiple or even multiple of the minimum transmission period, and performs the downlink synchronization process based on the synchronization signal. Through the adaptive synchronization signal transmission period of the network device, the network energy saving can be realized, and the energy efficiency of the entire network system can be improved.

[0231] As an optional embodiment, the bandwidth of the synchronization signal is variable, the bandwidth of the synchronization signal is an integer multiple or even multiple of the minimum bandwidth value, and the minimum bandwidth value is predefined or preconfigured.

[0232] In this embodiment, the bandwidth of the synchronization signal transmitted by the network device is variable, that is, the occupied bandwidth of the synchronization signal is not fixed. The value of the bandwidth of the synchronization signal can be preconfigured, for example, the minimum bandwidth value Y is configured, and other values of the bandwidth are an integer multiple or even multiple of the minimum bandwidth value. The terminal can perform the downlink synchronization process based on the bandwidth of the synchronization signal.

[0233] In some embodiments, the occupied bandwidth of the synchronization signal can be related to the first parameter. The network device can adaptively adjust the occupied bandwidth of the synchronization signal to realize energy saving.

[0234] As an optional embodiment, the method further comprises:

[0235] According to the synchronization signal, an initial control information resource set is acquired; and system information is received according to the initial control information resource set.

[0236] In some embodiments, the synchronization signal carries an MIB, and the MIB includes an initial control information resource set.

[0237] The initial control information resource set includes at least one of the following:

[0238] Frequency band information, used to indicate a frequency band where the system information is located;

[0239] Bandwidth information, used to indicate the bandwidth of the system information;

[0240] Time domain position, used to indicate the time domain position of the system information;

[0241] A frequency domain position, used to indicate a frequency domain position of system information.

[0242] In this embodiment, the synchronization signal can carry an MIB, and the MIB includes an initial control information resource set. Information in the initial control information resource set can be used to indicate a time domain, a frequency domain position, a bandwidth, a frequency band, and the like of system information. After receiving the synchronization signal, the terminal performs downlink synchronization based on the synchronization signal, and can monitor SIB information according to the information in the initial control information resource set.

[0243] In some embodiments, the frequency band information indicates that the system information is located in a frequency band different from a frequency band in which the synchronization signal is transmitted.

[0244] In this embodiment, the initial control information resource set carried by the MIB information allows indication of a frequency band and / or a position different from the synchronization signal, that is, the terminal can receive subsequent system information in the indicated frequency band and / or position. In this embodiment, the related information (such as a frequency band, a time domain and a frequency domain position, and the like) of the system information is separate from the related information of the synchronization information and is independently configured.

[0245] As an optional embodiment, the method further includes:

[0246] sending a request message to the network device, where the request message is used to request a change in a transmission period of the synchronization signal and / or a bandwidth of the synchronization signal.

[0247] In this embodiment, the terminal can request a change in the transmission period and / or the bandwidth of the synchronization signal from the network device based on its own needs.

[0248] In some embodiments, the method further includes: receiving first information transmitted by the network device, where the first information is used to indicate the changed transmission period of the synchronization signal and / or the changed bandwidth of the synchronization signal.

[0249] In this embodiment, after changing the transmission period and / or the bandwidth of the synchronization signal, the network device can send a response message or a notification message to the terminal to indicate the changed transmission period and / or the changed bandwidth of the synchronization signal. For example, the network device can notify the terminal of the change information of the transmission period of the synchronization signal and / or the occupied bandwidth of the synchronization signal through system information or a dedicated RRC signaling message.

[0250] In an embodiment of the present disclosure, the transmission period of the synchronization signal transmitted by the network device is variable, the terminal detects the synchronization signal based on a minimum transmission period or an integer multiple or even multiple of the minimum transmission period, and performs a downlink synchronization process based on the synchronization signal. Through adaptive transmission of the synchronization signal by the network device, network energy saving can be achieved, and the energy efficiency of the entire network system can be improved.

[0251] The embodiments of the present disclosure further provide a network architecture, comprising: a network coverage layer; or, the network coverage layer and a data transmission layer.

[0252] The network device under the network coverage layer supports adaptive synchronization signal transmission period, the synchronization signal transmission period is related to a first parameter, and the synchronization signal transmission period is variable.

[0253] In the embodiments, the network coverage layer can be a low-power coverage layer. The network architecture allows only the network coverage layer or the network coverage layer and one or more data transmission layers. The present disclosure does not specifically limit the data transmission layer.

[0254] In the network architecture, the network device under the network coverage layer has a variable synchronization signal transmission period (also referred to as a first period). Specifically, the network device can determine the synchronization signal transmission period based on a first parameter, thereby realizing real-time adjustment of the transmission period. Compared with a fixed synchronization signal transmission period, the adaptive synchronization signal transmission period can significantly improve network energy efficiency.

[0255] In some embodiments, the terminal can detect the synchronization signal transmitted by the network device according to a second period. The second period can be the minimum synchronization signal transmission period or an integer multiple of the minimum synchronization signal transmission period. For example, the terminal first detects the synchronization signal using the minimum transmission period X, if no synchronization signal is detected, the terminal continues to detect the synchronization signal using the period 2X, if no synchronization signal is still detected, the terminal continues to detect the synchronization signal using the period 3X, and so on, until the terminal detects the synchronization signal and performs the downlink synchronization process.

[0256] In some embodiments, the first parameter comprises at least one of the following:

[0257] (1) Traffic volume; the network device can determine the synchronization signal transmission period according to the current traffic volume to be processed, for example, if the current traffic volume is large, in order to avoid resource waste, the network device can appropriately increase the synchronization signal transmission period.

[0258] (2) Business emergency level; the network device can determine the synchronization signal transmission period according to the current business emergency level to be processed, for example, if the business emergency level is high, the network device needs to process the business preferentially, in order to ensure that the terminal accesses the network as soon as possible, the network device can appropriately reduce the synchronization signal transmission period; or, if the business emergency level is low, the network device can increase the synchronization signal transmission period.

[0259] (3) the number of terminals served by the network device; the network device can determine the period of sending the synchronization signal according to the number of terminals currently served by the network device, for example: if the number of terminals currently served by the network device is large, in order to ensure that each terminal can access the network as soon as possible, the network device can reduce the period of sending the synchronization signal.

[0260] (4) time information; the network device can determine the period of sending the synchronization signal according to the time period currently in which the network device is located. For example: for a certain time period, the network side does not want too many terminals to access, then the network side device can increase the period of sending the synchronization signal, for example: at night, the frequency of using the network by the terminal is low, then the network device can increase the period of sending the synchronization signal.

[0261] (5) the location of the network device; the network device can determine the period of sending the synchronization signal based on the location of the network device currently in which the network device is located. For example: for the area around the examination area, the network device can increase the period of sending the synchronization signal to avoid too many terminals accessing the network affecting the examination signal; for the residential area, the network device can reduce the period of sending the synchronization signal to ensure the experience of using the network by the residents.

[0262] (6) energy saving demand; the network device can determine the period of sending the synchronization signal based on the energy saving demand. For example: some functions of the network consume a large amount of energy and need to save energy, then the network device can increase the period of sending the synchronization signal; or, the current network is relatively idle and executes less business, then the network device can appropriately reduce the period of sending the synchronization signal.

[0263] It should be noted that the network device can also determine the period of sending the synchronization signal based on multiple of the above parameters.

[0264] In some embodiments, the period of sending the synchronization signal is an integer multiple or an even multiple of the minimum sending period of the synchronization signal, and the minimum sending period is predefined or preconfigured.

[0265] In this embodiment, the value of the period of sending the synchronization signal can be set, for example: the minimum sending period of the synchronization signal is set to X, and other values of the period can be an integer multiple (such as 2 times, 3 times, 4 times, etc.), an even multiple (such as 2 times, 4 times, 6 times, etc.) of the minimum sending period, etc.

[0266] In some embodiments, the working frequency band of the network coverage layer is a low frequency band.

[0267] In this embodiment, the network coverage layer works in a relatively low frequency band, for example: 600M, 700M or 800M of FR1, etc.

[0268] In some embodiments, the network device under the network coverage layer supports a radio frequency structure with an omnidirectional radio frequency antenna, or the network device under the network coverage layer supports a radio frequency structure with a directional antenna.

[0269] In this embodiment, the network device of the network coverage layer adopts an omnidirectional radio frequency antenna or a radio frequency structure with fewer directional antennas.

[0270] As an optional embodiment, the bandwidth of the synchronization signal is variable, the bandwidth of the synchronization signal is an integer multiple or an even multiple of the minimum bandwidth value, and the minimum bandwidth value is predefined or preconfigured.

[0271] In this embodiment, the occupied bandwidth of the synchronization signal is allowed to be variable, and the reference frequency point can be fixed. The value of the bandwidth of the synchronization signal can be an integer multiple of the minimum bandwidth value, or an even multiple of the minimum bandwidth value, etc.

[0272] In some embodiments, the synchronization signal carries an MIB, and the MIB includes an initial control information resource set.

[0273] The initial control information resource set includes at least one of the following:

[0274] Frequency band information, used to indicate a frequency band where system information is located;

[0275] Bandwidth information, used to indicate a bandwidth of system information;

[0276] Time domain position, used to indicate a time domain position of system information;

[0277] Frequency domain position, used to indicate a frequency domain position of system information.

[0278] In this embodiment, the network device transmits a synchronization signal, and MIB information of the synchronization signal includes a configurable initial control information resource set. The information in the initial control information resource set can be used to indicate a time domain, a frequency domain position, a bandwidth, a frequency band, etc. of system information. After receiving the synchronization signal, the terminal performs downlink synchronization based on the synchronization signal, and can monitor SIB information according to the information in the initial control information resource set.

[0279] In some embodiments, the frequency band information indicates that the frequency band where the system information is located is different from the transmission frequency band of the synchronization signal.

[0280] In this embodiment, the initial control information resource set carried in the MIB information allows to indicate that the system information is in a frequency band and / or a position different from the synchronization signal, that is, the terminal can receive subsequent system information in the indicated frequency band and / or position. In this embodiment, the related information (such as frequency band, time domain and frequency domain position, etc.) of the system information is separated from the related information of the synchronization information, and is independently configured.

[0281] As an optional embodiment, the network device under the network overlay supports receiving a request message sent by the first device, the request message being used to request to change the transmission period of the synchronization signal and / or the bandwidth of the synchronization signal.

[0282] In this embodiment, the network device of the network overlay is allowed to receive a request message from the UE and / or other network layers, cells and / or network elements for changing the transmission period of the synchronization signal and / or the bandwidth occupied by the synchronization signal.

[0283] In some embodiments, the network device under the network overlay supports sending first information to the first device, the first information being used to indicate the changed transmission period of the synchronization signal and / or the changed bandwidth of the synchronization signal.

[0284] In this embodiment, the network device of the network overlay can notify the UE and / or other network layers, cells and / or network elements of the change information of the transmission period and / or the bandwidth of the synchronization signal through system information or dedicated RRC signaling messages.

[0285] Embodiments of the present disclosure, by designing the above network architecture, the network architecture has the following energy-saving features, such as: configurable transmission period and / or bandwidth of the synchronization signal, working frequency band, supported radio frequency structure, etc., which can achieve the significant effect of improving the energy efficiency of the entire network, and overcome the energy-saving defects of the traditional 5G access network architecture design.

[0286] The above embodiments introduce the signal transmission method and the signal reception method of the present disclosure. The following embodiments will further describe the corresponding device in combination with the drawings.

[0287] Specifically, as shown in FIG. 6, the embodiment of the present disclosure provides a signal transmission device 600, which is executed by a network device, and includes:

[0288] A first transmission unit 610 is configured to transmit a synchronization signal according to a first period.

[0289] The first period is related to a first parameter, and the first period is variable.

[0290] In some embodiments, the first parameter includes at least one of the following:

[0291] Traffic volume;

[0292] Emergency degree of traffic;

[0293] Number of terminals served;

[0294] Time information;

[0295] Position of the network device;

[0296] Energy saving requirements.

[0297] In some embodiments, the bandwidth of the synchronization signal is variable, and the bandwidth of the synchronization signal is an integer multiple or an even multiple of a minimum bandwidth value, and the minimum bandwidth value is predefined or preconfigured.

[0298] In some embodiments, the synchronization signal carries a master information block (MIB), and the MIB includes an initial control information resource set.

[0299] The initial control information resource set includes at least one of the following:

[0300] Frequency band information, used to indicate a frequency band where system information is located;

[0301] Bandwidth information, used to indicate a bandwidth of the system information;

[0302] Time domain location, used to indicate a time domain location of the system information;

[0303] Frequency domain location, used to indicate a frequency domain location of the system information.

[0304] In some embodiments, the frequency band information indicates that the frequency band where the system information is located is different from a frequency band where the synchronization signal is transmitted.

[0305] In some embodiments, the apparatus further includes:

[0306] A first receiving unit, configured to receive a request message transmitted by a first device, and change a transmission period of the synchronization signal and / or a bandwidth of the synchronization signal according to the request message.

[0307] Or,

[0308] A first determining unit, configured to determine, by a network device, to change the transmission period of the synchronization signal and / or the bandwidth of the synchronization signal.

[0309] The first device includes a terminal and / or another network device other than the network device.

[0310] In some embodiments, the apparatus further includes:

[0311] A third transmitting unit, configured to transmit first information to the first device, and the first information is used to indicate the changed transmission period of the synchronization signal and / or the changed bandwidth of the synchronization signal.

[0312] In some embodiments, the first period is an integer multiple or an even multiple of a minimum transmission period of the synchronization signal, and the minimum transmission period is predefined or preconfigured.

[0313] In some embodiments, the transmission frequency band of the synchronization signal is a low frequency band.

[0314] In some embodiments, the network device supports a radio frequency structure with an omnidirectional radio frequency antenna, or the network device supports a radio frequency structure with a directional antenna.

[0315] It should be noted that the above-mentioned device provided by the embodiments of the present disclosure can realize all method steps realized by the above-mentioned method embodiments applied to the network device, and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be described in detail.

[0316] Specifically, as shown in FIG. 7, the embodiments of the present disclosure provide a signal receiving device 700 applied to a terminal, comprising:

[0317] The second sending unit 710 is configured to detect the synchronization signal sent by the network device according to a second period; the second period is the minimum transmission period of the synchronization signal, or an integer multiple or even multiple of the minimum transmission period;

[0318] The first processing unit 720 is configured to perform a downlink synchronization process according to the synchronization signal.

[0319] In some embodiments, the bandwidth of the synchronization signal is variable, the bandwidth of the synchronization signal is an integer multiple or even multiple of the minimum bandwidth value, and the minimum bandwidth value is predefined or preconfigured.

[0320] In some embodiments, the device further comprises:

[0321] The acquisition unit is configured to acquire an initial control information resource set according to the synchronization signal;

[0322] The second receiving unit is configured to receive system information according to the initial control information resource set.

[0323] In some embodiments, the synchronization signal carries an MIB, and the MIB includes an initial control information resource set.

[0324] The initial control information resource set includes at least one of the following:

[0325] Frequency band information for indicating a frequency band where the system information is located;

[0326] Bandwidth information for indicating the bandwidth of the system information;

[0327] Time domain position for indicating the time domain position of the system information;

[0328] Frequency domain position for indicating the frequency domain position of the system information.

[0329] In some embodiments, the frequency band information indicates that the system information is located in a frequency band different from the frequency band in which the synchronization signal is transmitted.

[0330] In some embodiments, the apparatus further includes:

[0331] A fourth sending unit, configured to send a request message to a network device, the request message being used to request to change a transmission period of the synchronization signal and / or a bandwidth of the synchronization signal.

[0332] In some embodiments, the apparatus further includes:

[0333] A third receiving unit, configured to receive first information sent by the network device, the first information being used to indicate the changed transmission period of the synchronization signal and / or the changed bandwidth of the synchronization signal.

[0334] It should be noted that the apparatus provided by the embodiments of the present disclosure can realize all the method steps achieved by the method embodiments applied to the terminal, and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be repeated here.

[0335] It should be noted that the division of units in the embodiments of the present disclosure is illustrative, and is only a logical function division. When actually implemented, another division mode can be used. In addition, each functional unit in each embodiment of the present disclosure can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0336] When the integrated unit is realized 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 solutions of the present disclosure, essentially or in other words, the part that contributes to the related art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, and includes several instructions for causing 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 methods described in the various embodiments of the present disclosure. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various other media that can store program codes.

[0337] As shown in FIG. 8, the embodiment of the present disclosure further provides a network device, comprising: a memory 820, a transceiver 800, a processor 810; wherein the memory 820 is configured to store a computer program; the transceiver 800 is configured to receive and send data under the control of the processor 810; and the processor 810 is configured to read the computer program in the memory and perform the following operations:

[0338] transmit a synchronization signal according to a first period;

[0339] wherein the first period is related to a first parameter, and the first period is variable.

[0340] In some embodiments, the first parameter comprises at least one of the following:

[0341] traffic volume;

[0342] service emergency degree;

[0343] terminal quantity of a service;

[0344] time information;

[0345] location of the network device;

[0346] energy saving demand.

[0347] In some embodiments, a bandwidth of the synchronization signal is variable, and the bandwidth of the synchronization signal is an integer multiple or an even multiple of a minimum bandwidth value, and the minimum bandwidth value is predefined or preconfigured.

[0348] In some embodiments, the synchronization signal carries a master information block (MIB), and the MIB comprises an initial control information resource set.

[0349] The initial control information resource set comprises at least one of the following:

[0350] band information, used for indicating a frequency band where system information is located;

[0351] bandwidth information, used for indicating a bandwidth of the system information;

[0352] time domain position, used for indicating a time domain position of the system information;

[0353] frequency domain position, used for indicating a frequency domain position of the system information.

[0354] In some embodiments, the frequency band information indicates that the frequency band where the system information is located is different from a transmission frequency band of the synchronization signal.

[0355] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0356] receiving a request message sent by the first device; and changing the transmission period of the synchronization signal and / or the bandwidth of the synchronization signal according to the request message;

[0357] or,

[0358] the network device determines to change the transmission period of the synchronization signal and / or the bandwidth of the synchronization signal;

[0359] The first device comprises a terminal and / or another network device other than the network device.

[0360] In some embodiments, the processor is configured to read a computer program in the memory and perform the following operations:

[0361] sending first information to the first device, the first information being used to indicate the changed transmission period of the synchronization signal and / or the changed bandwidth of the synchronization signal.

[0362] In some embodiments, the first period is an integer multiple or an even multiple of a minimum transmission period of the synchronization signal, and the minimum transmission period is predefined or preconfigured.

[0363] In some embodiments, the transmission frequency band of the synchronization signal is a low frequency band.

[0364] In some embodiments, the network device supports a radio frequency structure with an omnidirectional radio frequency antenna, or the network device supports a radio frequency structure with a directional antenna.

[0365] In FIG. 8, the bus architecture can include any number of interconnected buses and bridges, which are represented by the processor 810 and the memory 820. The bus architecture can also link various other circuits such as peripheral devices, voltage stabilizers, and power management circuits, which are well known in the art, and thus, are not further described herein. The bus interface provides an interface. The transceiver 800 can be a plurality of elements, i.e., including a transmitter and a transceiver, which provides a unit for communicating with various other devices on a transmission medium. The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 can store data used by the processor 810 in performing operations.

[0366] The processor 810 can 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 can also adopt a multi-core architecture.

[0367] It should be noted that the network device provided by the embodiments of the present disclosure can implement all the method steps achieved by the method embodiments applied to the network device, and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be described in detail.

[0368] As shown in FIG. 9, the embodiments of the present disclosure further provide a terminal, comprising: a memory 920, a transceiver 900, a processor 910; wherein the memory 920 is configured to store a computer program; the transceiver 900 is configured to receive and send data under the control of the processor 910; and the processor 910 is configured to read the computer program in the memory and perform the following operations:

[0369] detecting a synchronization signal sent by a network device according to a second period; the second period is a minimum sending period of the synchronization signal, or an integer multiple or even multiple of the minimum sending period;

[0370] performing a downlink synchronization process according to the synchronization signal.

[0371] In some embodiments, the bandwidth of the synchronization signal is variable, and the bandwidth of the synchronization signal is an integer multiple or even multiple of a minimum bandwidth value, and the minimum bandwidth value is predefined or preconfigured.

[0372] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0373] obtaining an initial control information resource set according to the synchronization signal;

[0374] receiving system information according to the initial control information resource set.

[0375] In some embodiments, the synchronization signal carries a MIB, and the MIB includes an initial control information resource set.

[0376] The initial control information resource set includes at least one of the following:

[0377] Band information, used for indicating a frequency band where the system information is located;

[0378] Band information, used for indicating a frequency band where the system information is located;

[0379] Time domain location, used for indicating a time domain location of the system information;

[0380] Frequency domain location, used for indicating a frequency domain location of the system information.

[0381] In some embodiments, the band information indicates that the system information is located in a frequency band different from a frequency band where the synchronization signal is transmitted.

[0382] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0383] sending a request message to the network device, the request message being used for requesting to change the transmission period of the synchronization signal and / or the bandwidth of the synchronization signal.

[0384] In some embodiments, the processor is configured to read the computer program in the memory and perform the following operations:

[0385] receiving first information transmitted by the network device, the first information being used for indicating the changed transmission period of the synchronization signal and / or the changed bandwidth of the synchronization signal.

[0386] In FIG. 9, the bus architecture can include any number of interconnected buses and bridges, which are collectively represented by the processor 910 and the memory 920. The bus architecture can also link various other circuits such as peripheral devices, voltage stabilizers, and power management circuits, which are well known in the art, and thus, are not further described herein. The bus interface provides an interface. The transceiver 900 can be a plurality of elements, i.e., including a transmitter and a receiver, which provide units for communicating with various other devices on a transmission medium. The user interface 930 can also be an interface capable of connecting to the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc., for different user devices.

[0387] The processor 910 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 910 in performing operations. In some embodiments, the processor 910 can 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), and the processor can also adopt a multi-core architecture.

[0388] 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.

[0389] It should be noted that the terminal provided by the embodiments of the present disclosure can implement all the method steps achieved by the method embodiments applied to the terminal and achieve the same technical effects. Therefore, the same parts and beneficial effects of the method embodiments will not be described in detail herein.

[0390] In addition, the embodiments of the present disclosure further provide a processor-readable storage medium, which stores a computer program, wherein the program is executed by a processor to implement the steps of the above signal sending method, or implement the steps of the above signal receiving method, and achieve the same technical effects. To avoid repetition, details are not described herein. The readable storage medium can be any available medium or data storage device accessible by the processor, including but not limited to a magnetic memory (such as a floppy disk, a hard disk, a magnetic tape, a magneto-optical disk (MO), etc.), an optical memory (such as a compact disk (CD), a digital versatile disk (DVD), a Blu-ray disk (BD), a high-definition versatile disk (HVD), etc.), and a semiconductor memory (read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically EPROM (EEPROM), non-volatile memory (NAND FLASH), solid state disk (SSD), etc.).

[0391] In addition, the embodiments of the present disclosure further provide a computer program product, which includes computer instructions, wherein the computer instructions are executed by a processor to implement the steps of the above signal sending method, or implement the steps of the above signal receiving method, and achieve the same technical effects. To avoid repetition, details are not described herein.

[0392] It should be noted that the technical solutions provided by the embodiments of the present disclosure can be applied to various systems, especially 5G systems. For example, the applicable systems can be global system of mobile communication (GSM) systems, code division multiple access (CDMA) systems, wideband code division multiple access (WCDMA) general packet radio service (GPRS) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, LTE time division duplex (TDD) systems, long term evolution advanced (LTE-A) systems, universal mobile systems (UMTS), worldwide interoperability for microwave access (WiMAX) systems, 5G new radio (NR) systems, etc. Among these various systems, there are terminal devices and network devices. The system can also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0393] The terminal device to which the embodiments of the present disclosure relate can refer to a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem, etc. In different systems, the name of the terminal device can also be different, for example, in the 5G system, the terminal device can be called a user equipment (UE). The wireless terminal device can communicate with one or more core networks (CN) through a radio access network (RAN). The wireless terminal device can be a mobile terminal device, such as a mobile phone (or called a "cellular" phone) and a computer with a mobile terminal device, for example, it can be a portable, pocket, handheld, computer built-in or vehicle-mounted mobile device, which exchanges language and / or data with the radio access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), etc. The wireless terminal device can also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile, a remote station, an access point, a remote terminal, an access terminal, a user terminal, a user agent, a user device, which is not limited in the embodiments of the present disclosure.

[0394] The network device related to the embodiments of the present disclosure can be a base station, which can include a plurality of cells serving terminals. According to different application scenarios, the base station can also be referred to as an access point, or can be a device in an access network that communicates with wireless terminal devices through one or more sectors over an air interface, or other names. The network device can be used to exchange received air frames and Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which can include an Internet Protocol (IP) communication network. The network device can also coordinate the management of the properties of the air interface. For example, the network device related to the embodiments of the present disclosure can be a network device (Base Transceiver Station, BTS) in the Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA), and can also be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), and can also be an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station (gNB) in a next generation system (5G network architecture), and can also be a home evolved Node B (HeNB), a relay node, a femto, a pico, etc., which are not limited in the embodiments of the present disclosure. In some network structures, the network device can include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit can also be arranged geographically apart.

[0395] The network device and the terminal device can each use one or more antennas for multi-input multi-output (MIMO) transmission, which can be single-user MIMO (SU-MIMO) or multiple-user MIMO (MU-MIMO). According to the shape and number of root antenna combinations, the MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, and can also be diversity transmission or precoding transmission or beamforming transmission, etc.

[0396] Those skilled in the art will appreciate that embodiments of the disclosure can be provided as methods, systems, or computer program products. Accordingly, the disclosure can take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the disclosure can take the form of a computer program product on one or more computer-usable storage media (including, but not limited to, disk storage, and optical storage) embodying computer-usable program code.

[0397] The disclosure is described with reference to the flowcharts and / or block diagrams according to the embodiments of the disclosure. It should be understood that each flow and / or block in the flowcharts and / or block diagrams, and the combination of flows and / or blocks in the flowcharts and / or block diagrams can be implemented by computer executable instructions. These computer executable instructions can be provided to a general purpose computer, a special purpose computer, an embedded processor, or other programmable data processing apparatus to produce a machine, so that the instructions executed by the computer or other programmable data processing apparatus produce the means for implementing the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0398] These processor executable instructions can also be stored in a processor readable memory that can direct the computer or other programmable data processing apparatus to work in a specific manner, so that the instructions stored in the processor readable memory produce a manufactured product including instruction means, which implements the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0399] These processor executable instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operation steps are performed on the computer or other programmable apparatus to produce a computer implemented process, so that the instructions executed on the computer or other programmable apparatus provide steps for implementing the functions specified in one or more flows in the flowcharts and / or one or more blocks in the block diagrams.

[0400] Further, it is to be noted that in the apparatus and method of the present disclosure, it is apparent that each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be considered as equivalent solutions of the present disclosure. Moreover, the steps of performing the above series of processes can naturally be executed in time sequence according to the order of description, but do not necessarily have to be executed in time sequence, and some steps can be executed in parallel or independently of each other. It can be understood by those skilled in the art that all or any steps or components of the method and apparatus of the present disclosure can be implemented in hardware, firmware, software, or a combination thereof, in any computing device (including processors, storage media, etc.) or network of computing devices, using the basic programming skills of those skilled in the art upon reading the description of the present disclosure.

[0401] It should be noted that it should be understood that the division of each module above is only a logical division of functions, and in actual implementation, all or part of them can be integrated into one physical entity, or can be physically separated. Moreover, these modules can all be implemented in the form of being called by a processing element through software; all can be implemented in the form of hardware; or some modules can be implemented in the form of being called by a processing element through software, and some modules can be implemented in the form of hardware. For example, a certain module can be a separately established processing element, or can be integrated in a certain chip of the above apparatus, in addition, it can also be stored in the form of program code in the memory of the above apparatus, and called and executed by a certain processing element of the above apparatus to determine the function of the above module. The implementation of other modules is similar. Moreover, all or part of these modules can be integrated together, or can be independently implemented. The processing element described herein can be an integrated circuit having a signal processing capability. In the implementation process, each step of the above method or each of the above modules can be completed by the integrated logic circuit of hardware or the instruction of software in the processing element.

[0402] 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).

[0403] 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."

[0404] 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, comprising: The network device sends a synchronization signal according to the first cycle; The first period is related to a first parameter, and the first period is variable.

2. The method according to claim 1, wherein The first parameter includes at least one of the following: Business volume; Business urgency; Number of terminals served; Time information; The location of network equipment; Energy saving needs.

3. The method according to claim 1, wherein The bandwidth of the synchronization signal is variable. The bandwidth of the synchronization signal is an integer multiple or an even multiple of a minimum bandwidth value. The minimum bandwidth value is predefined or preconfigured.

4. The method according to claim 1, wherein The synchronization signal carries a master information block MIB, wherein the MIB includes an initial control information resource set; The initial control information resource set includes at least one of the following: Frequency band information, used to indicate the frequency band where the system information is located; Bandwidth information, used to indicate the bandwidth of system information; Time domain position, used to indicate the time domain position of system information; Frequency domain position, used to indicate the frequency domain position of system information.

5. The method according to claim 4, wherein The frequency band where the system information indicated by the frequency band information is located is different from the frequency band in which the synchronization signal is sent.

6. The method according to claim 1, wherein The method further comprises: receiving a request message sent by the first device; changing a transmission period of the synchronization signal and / or a bandwidth of the synchronization signal according to the request message; or, The network device determines to change the transmission period of the synchronization signal and / or the bandwidth of the synchronization signal; The first device includes: a terminal and / or other network devices except the network device.

7. The method according to claim 6, wherein: The method further comprises: First information is sent to the first device, where the first information is used to indicate a changed sending period of the synchronization signal and / or a changed bandwidth of the synchronization signal.

8. The method according to claim 1, wherein The first period is an integer multiple or an even multiple of a minimum sending period of the synchronization signal, and the minimum sending period is predefined or preconfigured.

9. The method according to claim 1, wherein The synchronization signal is sent in a low frequency band.

10. The method according to claim 1, wherein The network device supports a radio frequency structure having an omnidirectional radio frequency antenna, or the network device supports a radio frequency structure having a directional antenna.

11. A signal receiving method, comprising: The terminal detects the synchronization signal sent by the network device according to the second period; The second period is a minimum transmission period of the synchronization signal, or an integer multiple or an even multiple of the minimum transmission period; The terminal performs a downlink synchronization process according to the synchronization signal.

12. The method according to claim 11, wherein The bandwidth of the synchronization signal is variable. The bandwidth of the synchronization signal is an integer multiple or an even multiple of a minimum bandwidth value. The minimum bandwidth value is predefined or preconfigured.

13. The method according to claim 11, wherein The method further comprises: Acquiring an initial control information resource set according to the synchronization signal; System information is received according to the initial control information resource set.

14. The method according to claim 13, wherein: The synchronization signal carries a MIB, wherein the MIB includes an initial control information resource set; The initial control information resource set includes at least one of the following: Frequency band information, used to indicate the frequency band where the system information is located; Bandwidth information, used to indicate the bandwidth of system information; Time domain position, used to indicate the time domain position of system information; Frequency domain position, used to indicate the frequency domain position of system information.

15. The method according to claim 14, wherein The frequency band where the system information indicated by the frequency band information is located is different from the frequency band in which the synchronization signal is sent.

16. The method according to claim 11, wherein The method further comprises: A request message is sent to a network device, where the request message is used to request a change in a sending period of the synchronization signal and / or a bandwidth of the synchronization signal.

17. The method according to claim 11 or 16, wherein The method further comprises: First information sent by the network device is received, where the first information is used to indicate a changed sending period of the synchronization signal and / or a changed bandwidth of the synchronization signal.

18. A network architecture comprising: Network coverage layer; or, network coverage layer and data transmission layer; The network equipment covered by the network coverage layer supports an adaptive synchronization signal sending period, the synchronization signal sending period is related to the first parameter, and the synchronization signal sending period is variable.

19. The network architecture according to claim 18, wherein: The transmission period of the synchronization signal is an integer multiple or an even multiple of the minimum transmission period of the synchronization signal, and the minimum transmission period is predefined or preconfigured.

20. The network architecture according to claim 18, wherein: The operating frequency band of the network coverage layer is a low frequency band.

21. The network architecture according to claim 18, wherein: The network devices covered by the network coverage layer support a radio frequency structure with an omnidirectional radio frequency antenna, or the network devices covered by the network coverage layer support a radio frequency structure with a directional antenna.

22. The network architecture according to claim 18, wherein: The first parameter includes at least one of the following: Business volume; Business urgency; Number of terminals served; Time information; The location of network equipment; Energy-saving needs.

23. The network architecture according to claim 18, wherein: The bandwidth of the synchronization signal is variable. The bandwidth of the synchronization signal is an integer multiple or an even multiple of a minimum bandwidth value. The minimum bandwidth value is predefined or preconfigured.

24. The network architecture according to claim 18, wherein: The synchronization signal carries a MIB, wherein the MIB includes an initial control information resource set; The initial control information resource set includes at least one of the following: Frequency band information, used to indicate the frequency band where the system information is located; Bandwidth information, used to indicate the bandwidth of system information; Time domain position, used to indicate the time domain position of system information; Frequency domain position, used to indicate the frequency domain position of system information.

25. The network architecture according to claim 24, wherein: The frequency band where the system information indicated by the frequency band information is located is different from the frequency band in which the synchronization signal is sent.

26. The network architecture according to claim 24, wherein: The network device under the coverage of the network coverage layer supports receiving a request message sent by the first device, where the request message is used to request a change in the sending period of the synchronization signal and / or the bandwidth of the synchronization signal.

27. The network architecture according to claim 24 or 26, wherein: The network devices covered by the network coverage layer support sending first information to the first device, where the first information is used to indicate a changed sending period of the synchronization signal and / or a changed bandwidth of the synchronization signal.

28. A network device comprising: Memory, transceiver, processor: Memory for storing computer programs; a transceiver for receiving and transmitting data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: Sending a synchronization signal according to a first cycle; The first period is related to a first parameter, and the first period is variable.

29. The apparatus of claim 28, wherein The first parameter includes at least one of the following: Business volume; Business urgency; Number of terminals served; Time information; The location of network equipment; Energy-saving needs.

30. The apparatus of claim 28, wherein The bandwidth of the synchronization signal is variable. The bandwidth of the synchronization signal is an integer multiple or an even multiple of a minimum bandwidth value. The minimum bandwidth value is predefined or preconfigured.

31. The apparatus of claim 28, wherein The synchronization signal carries a master information block MIB, wherein the MIB includes an initial control information resource set; The initial control information resource set includes at least one of the following: Frequency band information, used to indicate the frequency band where the system information is located; Bandwidth information, used to indicate the bandwidth of system information; Time domain position, used to indicate the time domain position of system information; Frequency domain position, used to indicate the frequency domain position of system information.

32. The apparatus of claim 31, wherein The frequency band where the system information indicated by the frequency band information is located is different from the frequency band in which the synchronization signal is sent.

33. The apparatus of claim 28, wherein The processor is configured to read the computer program in the memory and perform the following operations: receiving a request message sent by the first device; changing a transmission period of the synchronization signal and / or a bandwidth of the synchronization signal according to the request message; or, The network device determines to change the transmission period of the synchronization signal and / or the bandwidth of the synchronization signal; The first device includes: a terminal and / or other network devices except the network device.

34. The apparatus of claim 33, wherein: The processor is configured to read the computer program in the memory and perform the following operations: First information is sent to the first device, where the first information is used to indicate a changed sending period of the synchronization signal and / or a changed bandwidth of the synchronization signal.

35. The apparatus of claim 28, wherein The first period is an integer multiple or an even multiple of a minimum sending period of the synchronization signal, and the minimum sending period is predefined or preconfigured.

36. The apparatus of claim 28, wherein The synchronization signal is sent in a low frequency band.

37. The apparatus of claim 28, wherein The network device supports a radio frequency structure having an omnidirectional radio frequency antenna, or the network device supports a radio frequency structure having a directional antenna.

38. A terminal comprising: Memory, transceiver, processor: Memory for storing computer programs; a transceiver for receiving and transmitting data under the control of the processor; A processor is configured to read the computer program in the memory and perform the following operations: detecting a synchronization signal sent by the network device according to a second period; wherein the second period is a minimum transmission period of the synchronization signal, or an integer multiple or an even multiple of the minimum transmission period; A downlink synchronization process is performed according to the synchronization signal.

39. The terminal according to claim 38, wherein: The bandwidth of the synchronization signal is variable. The bandwidth of the synchronization signal is an integer multiple or an even multiple of a minimum bandwidth value. The minimum bandwidth value is predefined or preconfigured.

40. The terminal according to claim 38, wherein The processor is configured to read the computer program in the memory and perform the following operations: Acquiring an initial control information resource set according to the synchronization signal; System information is received according to the initial control information resource set. The terminal according to claim 40 , wherein: The synchronization signal carries a MIB, wherein the MIB includes an initial control information resource set; The initial control information resource set includes at least one of the following: Frequency band information, used to indicate the frequency band where the system information is located; Bandwidth information, used to indicate the bandwidth of system information; Time domain position, used to indicate the time domain position of system information; Frequency domain position, used to indicate the frequency domain position of system information.

42. The terminal according to claim 41, wherein The frequency band where the system information indicated by the frequency band information is located is different from the frequency band in which the synchronization signal is sent.

43. The terminal according to claim 38, wherein The processor is configured to read the computer program in the memory and perform the following operations: A request message is sent to a network device, where the request message is used to request a change in a sending period of the synchronization signal and / or a bandwidth of the synchronization signal.

44. The terminal according to claim 38 or 43, wherein: The processor is configured to read the computer program in the memory and perform the following operations: First information sent by the network device is received, where the first information is used to indicate a changed sending period of the synchronization signal and / or a changed bandwidth of the synchronization signal.

45. A signal sending device, executed by a network device, comprising: A first sending unit, configured to send a synchronization signal according to a first period; The first period is related to a first parameter, and the first period is variable.

46. ​​A signal receiving device, executed by a terminal, comprising: A second sending unit, configured to detect a synchronization signal sent by the network device according to a second period; The second period is a minimum transmission period of the synchronization signal, or an integer multiple or an even multiple of the minimum transmission period; The first processing unit is configured to perform a downlink synchronization process according to the synchronization signal.

47. A processor-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the signal sending method according to any one of claims 1 to 10, or implements the steps of the signal receiving method according to any one of claims 11 to 17.

48. A computer program product, comprising computer instructions, which, when executed by a processor, implement the steps of the signal sending method according to any one of claims 1 to 10, or implement the steps of the signal receiving method according to any one of claims 11 to 17.

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