WO2024056018A1 - Synchronization information acquisition method, terminal, and network side device - Google Patents

Abstract

The present application discloses a synchronization information acquisition method, a terminal, and a network side device, and belongs to the field of wireless communication. The synchronization information acquisition method of the embodiments of the present application comprises: a terminal receiving a first signal sent by a network side device; according to the reception of the first signal, the terminal acquiring time synchronization information and/or frequency synchronization information.

Description

Synchronization information acquisition method, terminal and network side equipment

cross reference

This application claims priority for a Chinese patent application filed with the China Patent Office on September 15, 2022, with application number 202211123671.8 and titled "Synchronization Information Acquisition Method, Terminal and Network Side Equipment". The entire content of this application is incorporated by reference. incorporated in this application.

Technical field

This application belongs to the field of wireless communication technology, and specifically relates to a method for obtaining synchronization information, a terminal and a network side device.

Background technique

In a synchronous system, the realization of time-frequency synchronization will be related to whether the information can be received and demodulated correctly. Therefore, how to obtain synchronization information and further achieve synchronization is an issue that needs to be solved urgently.

Contents of the invention

Embodiments of the present application provide a method, a terminal, and a network side device for obtaining synchronization information, which can solve the problem of how the terminal obtains synchronization information.

A first aspect provides a method for obtaining synchronization information, including: a terminal receiving a first signal sent by a network side device; and the terminal obtaining time synchronization information and/or frequency synchronization information based on receipt of the first signal.

In a second aspect, a device for obtaining synchronization information is provided, including: a receiving module for receiving a first signal sent by a network side device; and an obtaining module for obtaining time synchronization information and /or frequency synchronization information.

In a third aspect, a method for obtaining synchronization information is provided, including: a network side device sending a first signal to a terminal, where the first signal is used by the terminal to obtain time synchronization information and/or frequency synchronization information.

In a fourth aspect, a device for obtaining synchronization information is provided, including: a sending module configured to send a first signal to a terminal, wherein the first signal is used by the terminal to obtain time synchronization information and/or frequency synchronization information. .

In a fifth aspect, a terminal is provided. The terminal includes a processor and a memory, and the memory stores information that can be stored in the A program or instructions running on a processor, which when executed by the processor implement the steps of the method described in the first aspect.

A sixth aspect provides a terminal, including a processor and a communication interface, wherein the processor is used to implement the steps of the method described in the first aspect, and the communication interface is used to communicate with an external device.

In a seventh aspect, a network side device is provided. The network side device includes a processor and a memory. The memory stores programs or instructions that can be run on the processor. The program or instructions are executed by the processor. When implementing the steps of the method described in the third aspect.

In an eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the processor is used to implement the steps of the method described in the third aspect, and the communication interface is used to communicate with an external device.

A ninth aspect provides a system for obtaining synchronization information, including: a terminal and a network side device. The terminal can be used to perform the steps of the method described in the first aspect, and the network side device can be used to perform the steps of the third aspect. The steps of the method described in this aspect.

In a tenth aspect, a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method are implemented as described in the first aspect. The steps of the method described in the third aspect.

In an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the method described in the first aspect. The steps of a method, or steps of implementing a method as described in the third aspect.

In a twelfth aspect, a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement as described in the first aspect The steps of the method, or the steps of implementing the method as described in the third aspect.

In this embodiment of the present application, the terminal receives the first signal sent by the network side device, and obtains time synchronization information and/or frequency synchronization information based on the reception of the first signal, so that it can obtain time synchronization information and/or frequency synchronization information based on the obtained time synchronization information and/or frequency synchronization information. Achieve synchronization, correct time offset and/or frequency offset, and improve the reliability of communication between terminals and network side equipment.

Description of drawings

Figure 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable;

Figure 2a shows a schematic structural diagram of a receiving end in an embodiment of the present application;

Figure 2b shows a schematic diagram of a wake-up signal in an embodiment of the present application;

Figure 2c shows a schematic frame structure diagram of a beacon signal in an embodiment of the present application;

Figure 3 shows a schematic flow chart of a method for obtaining synchronization information in an embodiment of the present application;

Figure 4 shows a schematic structural diagram of the beacon signal in the embodiment of the present application;

Figure 5 shows a schematic flow chart of another method for obtaining synchronization information in an embodiment of the present application;

Figure 6 shows a schematic diagram of a periodic beacon signal in an embodiment of the present application;

Figure 7 shows a schematic diagram of a beacon signal set in an embodiment of the present application;

Figure 8 shows a schematic diagram of another beacon signal set in the embodiment of the present application;

Figure 9 shows a schematic structural diagram of a device for obtaining synchronization information in an embodiment of the present application;

Figure 10 shows a schematic structural diagram of another device for obtaining synchronization information in an embodiment of the present application;

Figure 11 shows a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 12 shows a schematic diagram of the hardware structure of a terminal provided by an embodiment of the present application;

Figure 13 shows a schematic hardware structure diagram of a network-side device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and that "first" and "second" are distinguished objects It is usually one type, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and/or" in the description and claims indicates at least one of the connected objects, and the character "/" generally indicates that the related objects are in an "or" relationship.

It is worth pointing out that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced, LTE-A) systems, and can also be used in other wireless communication systems, such as code Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access, OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used not only for the above-mentioned systems and radio technologies, but also for other systems and radio technologies. The following description describes a New Radio (NR) system for example purposes, And NR terminology is used in most of the following descriptions, but these technologies can also be applied to applications other than NR system applications, such as 6th Generation ( ^6th Generation, 6G) communication systems.

Figure 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network side device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, or a super mobile personal computer. (ultra-mobile personal computer, UMPC), mobile Internet device (Mobile Internet Device, MID), augmented reality (augmented reality, AR)/virtual reality (VR) equipment, robots, wearable devices (Wearable Device) , vehicle user equipment (VUE), pedestrian terminal (Pedestrian User Equipment, PUE), smart home (home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.), game consoles, personal computers (personal computer, PC), teller machine or self-service machine and other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets) bracelets, smart anklets, etc.), smart wristbands, smart clothing, etc. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network side equipment 12 may include access network equipment and/or core network equipment, where the access network equipment 12 may also be called radio access network equipment, radio access network (Radio Access Network, RAN), or radio access network. function or radio access network unit. The access network device 12 may include a base station, a WLAN access point or a WiFi node, etc. The base station may be called a Node B, an evolved Node B (evolved Node B, eNB), an access point, or a Base Transceiver Station (Base Transceiver Station). BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B-node, home evolved B-node, Transmitting Receiving Point, TRP) or some other appropriate term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of this application, only the base station in the NR system is taken as an example. This introduction does not limit the specific type of base station.

The relevant terms involved in the embodiments of this application are described below.

1. Low power consumption receiver

Low power receiver, namely low power wake up radio (LP-WUR). The basic working principle of LP-WUR is that the receiving end contains a first module and a second module, as shown in Figure 2a. The first module is the main communication module for sending and receiving mobile communication data, and the second module is for low-power reception. Module (also called low-power wake-up receiving module), used to receive the above-mentioned wake-up signal. In the energy-saving state, the terminal turns on the low-power receiving module to monitor LP-WUS and turns off the main communication module. When downlink data arrives, the network will send a wake-up signal to the terminal. The terminal monitors the wake-up signal through the low-power receiving module and makes a series of judgments to trigger the main communication module from off to on. At this time, the low-power receiving module Enter the shutdown state from the working state. The low-power wake-up receiving module can be turned on continuously or intermittently. Receives a low-power wake-up signal when turned on.

2. Low-power wake-up signal

In order to reduce the receiving activity of the terminal in the standby state, so that the radio frequency (Radio Frequency, RF) and baseband (MODEM) modules are truly turned off, thereby greatly reducing the power consumption of communication reception, a near " A zero" power receiver is thus achieved. This nearly "zero" power receiver does not require complex RF module signal detection (such as amplification, filtering, quantization, etc.) and MODEM signal processing, and only relies on passive matched filtering and smaller power consumption signal processing.

On the base station side, by triggering the wake-up signal on-demand, a near-zero power receiver can be activated to obtain the activation notification, thereby triggering a series of processes within the terminal, such as turning on radio frequency transceiver and baseband processing, etc. module.

This kind of wake-up signal is usually some relatively simple on-off keying signal. The time domain pattern of the on-off keying signal is shown in Figure 2b, so that the receiver can pass simple energy detection, and then Processes such as possible sequence detection and identification are informed of wake-up notifications. In addition, while the terminal turns on the low-power wake-up receiver to receive the wake-up signal, the main receiver module can maintain working at a lower power consumption level, thereby achieving power consumption savings by receiving the wake-up signal.

3. Beacon signal

The beacon signal is a signal that is sent periodically to convey time information. The receiving end can obtain time synchronization information by receiving beacon signals. In some embodiments, mobility measurement or channel measurement can also be performed by receiving beacon signals.

In one implementation, the beacon signal is transmitted using a specific media access control (MAC) frame, the structure of which is shown in Figure 2c. The Type dependent control of the WUR beacon MAC frame carries the 5th to 16th bit information in the 64 bits of the AP's TSF clock. After the user receives the corresponding information bits, it updates the user's local time according to the time update criteria defined by 802.11ba. TSF clock to achieve synchronization with the AP. The sending period of WUR beacon and the offset of the sending starting position are indicated by the operation element sent by the AP. The period is the minimum number of TSF time units between two beacon sendings, and the starting position is offset relative to TSF0 Number of TSF time units. When Carrier Sense Multiple Access (CSMA) deferreds occur, the WUR beacon will be sent delayed in the current cycle, but in subsequent cycles it will still be sent according to the WUR beacon's sending cycle and the location determined by the sending starting position.

The synchronization information acquisition solution provided by the embodiments of the present application will be described in detail below with reference to the accompanying drawings through some embodiments and application scenarios.

Figure 3 shows a schematic flowchart of a method for obtaining synchronization information in an embodiment of the present application. The method 300 can Executed by the terminal. In other words, the method may be performed by software or hardware installed on the terminal. As shown in Figure 3, the method may include the following steps.

S310. The terminal receives the first signal sent by the network side device.

In this embodiment of the present application, the first signal may be used to synchronize time and/or frequency between the terminal and the network side device.

In a possible implementation of the embodiment of this application, the first signal may be a beacon signal, and the network side device may periodically transmit time information through the beacon signal, that is, the beacon signal is a periodically sent A signal used to convey time information. The receiving end can obtain time synchronization information by receiving beacon signals. In some embodiments, beacon signals may also be used for functions such as mobility measurement or channel measurement, which are not limited here.

Alternatively, in an embodiment, referring to Figure 4, the beacon signal structure may include one of the following:

Structure 1: Contains the first-level preamble and the second-level preamble in sequence;

Structure 2: Contains the first-level preamble, the second-level preamble, and the data part in sequence;

Structure 3: Contains one level of preamble in sequence;

Structure 4: Contains the first-level preamble and data part in sequence.

In another possible implementation of the embodiment of the present application, the first signal may also be a wake-up signal, for example, a low-power wake-up signal.

In a possible implementation, the first signal may carry second indication information, and the second indication information includes at least one of the following:

(1) Index information of the first time unit.

Optionally, the first time unit may be the first time unit during which the first signal is received. That is to say, the index information of the first time unit is the index information of the first time unit where the first signal is received.

Optionally, the index information of the first time unit may be the index information of the first time unit within the first signal listening period. That is to say, in each first signal listening period, the index of the first time unit starts from 0. For example, the length of the first signal monitoring period is 4 first time units, and the index information of each first time unit is 0, 1, 2, and 3 in order.

In another embodiment, the encoding method of the first time unit may adopt a continuous encoding method spanning multiple first signal listening periods.

(2) First indication information; the first indication information is used to indicate that the first signal is located in the second time unit of the first half or the last half. That is, the first indication information is used to indicate that the first signal is located within the first half of the second time unit, or the first indication information is used to indicate that the first signal is located within the first half of the second time unit. Within the rear half.

(3) Index information of the listening opportunity of the first signal.

Optionally, the index information of the listening opportunity of the first signal is the index information of the listening opportunity of receiving the first signal.

Optionally, the index information of the first signal listening opportunity may be the index information of the first signal listening opportunity in a first signal listening set. For example, a first signal monitoring set includes multiple first signal monitoring opportunities, and the first signal monitoring opportunities in the first signal monitoring set may be numbered. For example, assuming that a first signal monitoring set includes four first signal monitoring opportunities, the index information of each first signal monitoring opportunity may be 0, 1, 2, and 3 in order.

In this embodiment of the present application, the time unit may include at least one time unit, and each time unit has different time granularity. Wherein, the granularity of each time unit includes at least one of the following: Amplitude-shift Keying (ASK) symbols, system frames, subframes, time slots, orthogonal frequency division multiplexing (Orthogonal frequency division) multiplex, OFDM) symbols.

Optionally, the first time unit and the second time unit may be any one of ASK symbols, frames, subframes, time slots, and OFDM symbols respectively. The above-mentioned first time unit and the second time unit may be the same. Alternatively, the first time unit is different from the second time unit. For example, the first time unit and the second time unit are both system frames; the index information of the first time unit in the second indication information may be the index information of the system frame in which the first signal is located, and the first indication information is used to indicate the Whether the first signal is within the first half of the system frame or within the last half of the system frame.

In a possible implementation, the reception timing of the first signal may be within one or more consecutive time units. It can be understood that the time length occupied by the first signal is one or more continuous time units.

In this embodiment of the present application, the starting position of the first signal and the starting position of the time unit are aligned by default.

For example, the first signal includes a plurality of components, and the reception of the plurality of components is continuous, thereby forming a first signal. Wherein, multiple components can be understood as multiple components in the first signal structure. For example, the above-mentioned structure 1 of the beacon signal includes a first-level preamble and a second-level preamble in order. That is, the beacon signal contains two components.

Alternatively, the terminal may assume or expect that each component of the first signal has the same energy (Energy Per Resource Element, EPRE).

In a possible implementation, the second indication information can be carried by at least one of the following:

(1) The first sequence of the first signal; optionally, the first sequence may be a preamble sequence or a synchronization sequence, which is configured by the network side or agreed by the protocol.

(2) The data domain of the first signal. Optionally, the data field carries data information, etc.

Through the above possible implementation manner, the terminal can obtain the second indication information by detecting the first sequence of the first signal and/or the data field of the first signal.

S312: The terminal obtains time synchronization information and/or frequency synchronization information according to reception of the first signal.

It can be understood that the terminal performs time synchronization and/or frequency synchronization by obtaining time synchronization information and/or frequency synchronization information. Optionally, time synchronization includes: the terminal corrects the time offset based on the acquired time synchronization information, determines the downlink time unit boundary, etc. Optionally, frequency synchronization includes: the terminal corrects the frequency offset according to the obtained frequency synchronization information, determines the frequency of the wake-up signal, etc.

For example, when the second indication information is carried in the first signal, the terminal may obtain time synchronization information and/or frequency synchronization information according to the second indication information.

Optionally, the time synchronization information may include at least one of the following:

(1) Index information of the listening opportunity of the first signal;

Optionally, the index information of the listening opportunity of the first signal is the index information of the listening opportunity of receiving the first signal.

Optionally, the index information of the first signal monitoring opportunity may be the index information of the first signal monitoring in a first signal monitoring set. For example, a first signal monitoring set includes multiple first signal monitoring opportunities, and the first signal monitoring opportunities in the first signal monitoring set may be numbered. For example, assuming that a first signal set monitoring includes four first signal monitoring opportunities, the index information of each first signal monitoring opportunity may be 0, 1, 2, and 3 in order.

(2) Index information of the first time unit.

Optionally, the first time unit may be the first time unit during which the first signal is received. That is to say, the index information of the first time unit is the index information of the first time unit where the first signal is received.

Optionally, the index information of the first time unit may be the index information of the first time unit within the first signal listening period. That is to say, in each first signal listening period, the index of the first time unit starts from 0. For example, the length of the first signal monitoring period is four first time units, and the index information of each first time unit is 0, 1, 2, and 3 in order.

In another embodiment, the encoding method of the first time unit may adopt a continuous encoding method spanning multiple first signal listening periods.

(3) Boundary information of at least one time unit.

Optionally, at least one time unit may be one or more of ASK symbols, frames, subframes, time slots, and OFDM symbols. Through the boundary information of at least one time unit, the boundaries of various time units can be determined. Optionally, ASK modulation includes on-off keying OOK (on-off keying) modulation. OOK modulation is a special case of ASK modulation. It should be noted that the boundary information may include: at least one item of starting time information and ending time information.

(4) Boundary information of the first signal listening period in which the first signal is located.

For example, the boundary information of the first signal listening period where the first signal is located may include: the first signal is located Boundary information of the starting time unit of the first signal listening period.

(5) Boundary information of the first signal monitoring set where the first signal is located.

Optionally, the first signal monitoring set includes at least one first signal monitoring opportunity. For example, the boundary information of the first signal monitoring set where the first signal is located may include: the boundary information of the end time unit of the first signal monitoring set where the first signal is located.

(6) First indication information, the first indication information is used to indicate that the first signal is located in the second time unit of the first half or the last half. That is, the first indication information is used to indicate that the first signal is located within the first half of the second time unit, or the first indication information is used to indicate that the first signal is located within the first half of the second time unit. Within the rear half.

Optionally, the first time unit and the second time unit may be any one of ASK symbols, frames, subframes, time slots, and OFDM symbols respectively. The above-mentioned first time unit and the second time unit may be the same. Alternatively, the first time unit is different from the second time unit. For example, the first time unit is a subframe and the second time unit is a system frame. The index information of the first time unit in the second indication information may be the location of the first signal. The index information of the subframe, the first indication information is used to indicate whether the first signal is within the first half of a system frame or within the last half of the system frame.

In this embodiment of the present application, the time synchronization information and/or frequency synchronization information may be used by the terminal to detect a wake-up signal. For example, the terminal may determine the time information of the wake-up signal listening opportunity based on the time synchronization information and/or frequency synchronization information, thereby detecting the wake-up signal on the corresponding listening opportunity.

In a possible implementation, after S212, the method may further include: the terminal detecting a wake-up signal based on the time synchronization information and/or frequency synchronization information.

Optionally, the terminal determines the time information and/or frequency information of the wake-up signal listening opportunity based on the time synchronization information and/or frequency synchronization information, and then determines the time information and/or frequency information of the wake-up signal listening opportunity according to the time information and/or frequency information. The wake-up signal is detected on the listening opportunity.

Optionally, the time information of the wake-up signal listening opportunity includes at least one of the following:

(1) Boundary information of the time unit where the wake-up signal listening opportunity is located. Optionally, through the boundary information, the terminal can determine at least one of the starting time, the ending time and the length information of the time unit corresponding to the wake-up signal listening opportunity, so that the wake-up signal can be detected.

(2) Offset information of the start time or end time of the wake-up signal listening opportunity from the reference point. Optionally, the reference point is the starting position or the ending position of the first signal listening period. Through the offset information, the terminal can determine the offset information of the wake-up signal listening opportunity from the reference point, so that the time position information of the wake-up signal listening opportunity can be obtained according to the reference point.

In this embodiment of the present application, in order to further reduce the monitoring or detection power consumption of the terminal, the wake-up signal may be a low-power wake-up signal.

In a possible implementation, before S210, the method further includes: the terminal obtains first configuration information, where the first configuration information is configured by the network side and/or agreed upon by a protocol.

Optionally, the first configuration information includes at least one of the following (1) to (3).

(1) Time unit configuration information. Through the time unit configuration information, the terminal can determine the configuration information of the time unit.

Optionally, the time unit configuration information includes at least one of the following: time unit division information, time unit numbering period information.

(2) First signal configuration information. Through the first signal configuration information, the terminal can determine the relevant configuration information of the first signal.

Optionally, the first signal configuration information may include at least one of the following:

(1) The number of first signals included in the first signal monitoring set;

(2) The size of the first signal listening period;

(3) Time domain pattern configuration information of the first signal monitoring set.

Optionally, the time domain pattern configuration information of the first signal monitoring set includes at least one time domain pattern, the time domain pattern is related to subcarrier spacing (SCS), and/or the time domain pattern Relevant to the number of first signals included in the first signal monitoring set. For example, under different SCS levels, different time domain patterns of the first signal monitoring set are used.

Optionally, the time domain pattern configuration information of the first signal monitoring set includes at least one of the following:

(1) Information on the time unit occupied by the first signal monitoring opportunity included in the first signal monitoring set; for example, it may include index information on the time unit occupied by the first signal monitoring opportunity, and the position of the first signal monitoring opportunity within the time unit information, offset information of the first signal listening opportunity relative to the starting position of the time unit, etc. For example, when the time unit is an OOK symbol, the information about the time unit occupied by the first signal monitoring opportunity included in the first signal monitoring set may be the index information of the OOK symbol occupied by the first signal monitoring opportunity.

(2) Time interval information of adjacent first signal monitoring opportunities;

(3) First offset information, the first offset information is the offset between the starting position or the end position of the first signal monitoring set and a reference point, wherein the reference point is the The first signal monitoring set is located at the starting position or the end position of the first signal monitoring period. Optionally, the starting position of the first signal monitoring set may include: the starting position of the time unit where the first signal monitoring opportunity in the first signal monitoring set is located, and the end position of the first signal monitoring set may include: the first signal The end position of the time unit where the last first signal listening opportunity in the listening set is located.

(4) Information on the length of time occupied by the first signal monitoring opportunity. For example, the first signal listening opportunity occupies M consecutive time units.

(3) Wake-up signal configuration information. Through the wake-up signal configuration information, the terminal can determine the configuration information of the wake-up signal.

Optionally, the wake-up signal configuration information may include at least one of the following:

(1) Time domain pattern configuration information of a wake-up signal listening set, wherein the wake-up signal listening set contains at least one wake-up signal listening opportunity. Optionally, the time-domain pattern configuration information of the wake-up signal listening set includes at least one time-domain pattern, and the time-domain pattern may be related to the SCS, and/or the time-domain pattern and the wake-up signal listening set include related to the number of wake-up signals.

Optionally, the listening opportunity for the wake-up signal can be configured relative to the starting position of the first signal listening period, for example, configuring a time offset from the starting position of the first signal period to determine the listening opportunity for the wake-up signal.

Optionally, the listening opportunity for the wake-up signal can also be configured relative to the end position of the first signal listening duration. For example, a time offset from the end position of the first signal listening duration is configured to determine the listening time for the wake-up signal. Chance.

(2) Wake-up signal monitoring period;

(3) Mapping relationship between the time domain pattern of the first signal monitoring set and the time domain pattern of the wake-up signal monitoring set. Through this mapping relationship, the terminal can implicitly determine the time domain pattern of the wake-up signal monitoring set associated with it based on the time-domain pattern of the first signal set, that is, determine the monitoring opportunity information of the wake-up signal.

Optionally, the time domain pattern configuration information of the wake-up signal listening set includes the information in the following items (1) to (4).

(1) Information on the time unit occupied by the wake-up signal listening opportunity contained in the wake-up signal listening set; optionally, it may include index information on the time unit occupied by the wake-up signal listening opportunity, location information of the wake-up signal listening opportunity within the time unit, The offset information of the wake-up signal listening opportunity relative to the starting position of the time unit, etc.

(2) Second offset information, the second offset is the offset of the wake-up signal listening opportunity from a reference point, where the reference point is the starting position of the first signal listening period, the first At least one of the end position of a signal monitoring period, the end position of the first signal monitoring set and the starting position of the first signal monitoring set. Wherein, the starting position of the first signal monitoring set may include: the starting position of the time unit where the first signal monitoring opportunity in the first signal monitoring set is located, and the end position of the first signal monitoring set may include: the first signal monitoring set The end position of the time unit where the last first signal listening opportunity occurs.

(3) Time interval information of adjacent wake-up signal listening opportunities;

(4) Information on the length of time occupied by the wake-up signal listening opportunity. For example, the wake-up signal listening opportunity occupies M consecutive time units.

In a possible implementation, in S212, the terminal can obtain the time synchronization information and/or frequency synchronization information based on the reception of the first signal and combined with the first configuration information, thereby achieving time synchronization and/or frequency synchronization information. or frequency synchronization.

Optionally, the terminal detects a wake-up signal based on reception of the first signal and/or the first configuration information.

For example, the terminal may determine the listening opportunity for the wake-up signal based on at least one of wake-up signal configuration information, time unit configuration information, index information of the listening opportunity for the first signal, and boundary information of at least one time unit. time information, and then detect the wake-up signal at the wake-up signal listening opportunity.

For another example, the terminal may determine the time unit based on at least one of wake-up signal configuration information, time unit configuration information, the first indication information, index information of the first time unit, and boundary information of at least one time unit. The time information of the listening opportunity for the wake-up signal is located, and then the wake-up signal is detected at the listening opportunity for the wake-up signal.

Taking the time unit as an OOK symbol as an example, the terminal can determine the wake-up signal based on the OOK symbol configuration information, the OOK index information associated with the wake-up signal monitoring opportunity, the index information of the OOK symbol, and the boundary information of the OOK symbol. The starting OOK symbol position of the listening opportunity, and then detecting the wake-up signal on the listening opportunity for the wake-up signal. For another example, the terminal determines the signal according to the OOK symbol configuration information, the OOK index information associated with the wake-up signal listening opportunity, the listening opportunity index information of the first signal, and the OOK symbol index associated with the listening opportunity of the first signal. information and OOK symbol boundary information, determine the starting OOK symbol position of the wake-up signal listening opportunity, and then detect the wake-up signal on the wake-up signal listening opportunity. Wherein, the wake-up signal configuration information includes OOK index information associated with the wake-up signal listening opportunity; the first signal configuration information includes OOK symbol index information associated with the first signal listening opportunity; the time unit The configuration includes OOK symbol configuration information.

In this embodiment of the present application, the terminal may also be based on the target time unit index information associated with the first signal monitoring opportunity in the first signal monitoring set or the received index information of the monitoring opportunity of the first signal, Obtain the boundary information of the time unit and the index information of the time unit. Wherein, the first signal monitoring opportunity has its associated time unit index.

In this embodiment of the present application, the terminal may obtain the first time unit index where the first signal is located based on the reception of the first signal; the terminal may obtain the first time unit index based on the reception of the first signal. The first time unit in which a signal is located is the first half of the first time unit or the last half of the first time unit.

Wherein, when the first condition is met, the first time unit is a symbol (which may be an ASK symbol); wherein the first condition includes: the first signal period length is greater than or equal to the first value, or, The time domain drift is greater than or equal to one symbol length.

When the second condition is met, the first time unit is a time slot; wherein the second condition includes: the first time unit The length of a signal cycle is greater than or equal to the second value, or the time domain drift is greater than or equal to the length of a time slot.

When the third condition is met, the first time unit is a system frame; wherein the third condition includes: the first signal period length is greater than or equal to the third value, or the time domain drift is greater than or equal to one System frame length.

Figure 5 shows a schematic flowchart of another method for obtaining synchronization information in an embodiment of the present application. The method 500 can be executed by a network-side device. In other words, the method may be executed by software or hardware installed on the network side device. As shown in Figure 5, the method may include the following steps.

S510: The network side device sends a first signal to the terminal, where the first signal is used by the terminal to obtain time synchronization information and/or frequency synchronization information.

The first signal is the same as the first signal in method 200. By sending the first signal to the terminal, the network side device can enable the terminal to obtain time synchronization information and/or frequency synchronization information based on reception of the first signal.

Optionally, the time synchronization information includes at least one of the following:

Index information of the listening opportunity of the first signal;

Index information of the first time unit;

Boundary information of at least one time unit;

Boundary information of the first signal listening period in which the first signal is located;

Boundary information of the first signal monitoring set where the first signal is located, wherein the first signal monitoring set contains at least one first signal monitoring opportunity;

First indication information, the first indication information is used to indicate that the first signal is located in a second time unit of the first half or the last half.

The time synchronization information is the same as the time synchronization information in method 200. For details, please refer to the relevant description in method 200, which will not be described again here.

In a possible implementation, the first signal may carry second indication information, and the second indication information includes at least one of the following in the time synchronization information:

The index information of the first time unit;

the first indication information;

Index information of the listening opportunity of the first signal.

The second indication information is the same as the second indication information in method 200. For details, please refer to the relevant description in method 200, which will not be described again here.

Optionally, the second indication information may be carried by at least one of the following:

a first sequence of the first signal;

The data field of the first signal.

In a possible implementation, before S510, the method may further include: the network side device configuring the first configuration information for the terminal.

Optionally, the first configuration information includes at least one of the following:

(1) Time unit configuration information; Optionally, the time unit configuration information includes at least one of the following: time unit division information, time unit numbering cycle information.

(2) First signal configuration information; optionally, the first signal configuration information may include at least one of the following: the number of first signals included in the first signal monitoring set; the size of the first signal monitoring period; the first signal Time domain pattern configuration information of the listening set.

(3) Wake-up signal configuration information. Optionally, the wake-up signal configuration information may include at least one of the following: time-domain pattern configuration information of the wake-up signal listening set, wake-up signal listening period, time-domain pattern of the first signal listening set and the time-domain pattern of the wake-up signal listening set. Mapping relationships between time domain patterns.

The first configuration information is the same as the first configuration information in method 200. For details, please refer to the relevant description in method 200, which will not be described again here.

In order to further understand the technical solutions provided by the embodiments of the present application, the following description takes the first signal as a beacon signal as an example.

Embodiment 1

In this embodiment, time synchronization information is obtained based on the first configuration information and the second indication information (ie, the index information of the beacon signal listening opportunity) with the OOK symbol as the time unit.

In this embodiment, the network side device configuration or protocol agrees on a beacon signal monitoring set, and the beacon signal monitoring set includes at least one beacon signal monitoring opportunity. The number of the beacon signal listening opportunity is the number of the beacon signal listening opportunity in a beacon signal listening set. For example, in Figure 6, a beacon signal set includes M=8 beacon signals, and the listening opportunities of each beacon signal are numbered from 0 to 7. It should be noted that if a beacon signal listening set only contains one beacon signal listening opportunity, the number information of the beacon signal listening opportunity is not required.

The network side device configuration or protocol stipulates that the first configuration information includes:

(1) Time unit configuration information, where the time unit configuration information may include information such as division information of OOK symbol units, numbering cycles of OOK symbols, and other information. The numbering period of OOK symbols may be equal to the beacon signal period length. That is, the OOK symbols are numbered within one beacon signal period.

(2) Beacon signal configuration information, where the beacon signal configuration may include the following information:

a) Information on the number of beacon signal monitoring opportunities included in the beacon signal monitoring set, M=8;

b) time domain pattern configuration of the beacon signal monitoring set, the configuration information may specifically include at least one of the following:

i. Information about the OOK symbol where the beacon signal in the beacon signal monitoring set is located.

ii. Time interval information of adjacent beacon signal listening opportunities, for example, the length of 2 OOK symbols.

iii. First offset information, the first offset is the offset between the starting position of the beacon signal monitoring set and the starting position of the beacon signal monitoring period; for example, 4 OOK symbol lengths .

iv. The length of time occupied by each beacon signal listening opportunity, for example, each beacon signal listening opportunity occupies a length of 10 OOK symbols.

(3) Wake-up signal configuration information, wherein the wake-up signal configuration information may include: wake-up signal listening opportunity configuration information. The listening opportunity configuration information refers to time domain location information.

It should be noted that the starting position of each beacon signal is aligned with the starting position of the OOK symbol. According to the time domain pattern configuration of the beacon signal monitoring set, the network side device and the terminal can learn the OOK symbol index/information of all beacon signals in a beacon signal monitoring set, as shown in Figure 7.

In addition, the beacon signal may also carry first indication information, and the first indication information includes: index information of the beacon signal listening opportunity.

In this embodiment of the present application, each beacon signal detected by the terminal carries index information of its corresponding beacon signal listening opportunity. Within a beacon signal period, the terminal can detect one or more beacon signals in the beacon signal listening opportunities included in a beacon signal listening set according to the terminal implementation. Terminal implementation means that the terminal can detect the optimal K beacon signals based on the detected beacon signal strength. For example, in Figure 7, the terminal receives beacon signals 2 and 3.

The terminal can determine the OOK symbol index and boundary position of the detected beacon signal based on the detected beacon signal listening opportunity index and the time domain pattern of the agreed beacon signal monitoring set. For example, in Figure 7, after detecting beacon signals 2 and 3, the terminal can determine information such as the boundary of the OOK symbol and the index of the OOK symbol. In addition, the terminal can also determine the distance between the time position of the terminal and the starting position of the current beacon signal listening cycle based on the time domain pattern of the beacon signal monitoring set and the first offset. I won’t go into details here. As a result, the terminal can achieve downlink OOK symbol synchronization and then correct the time domain offset. In addition, according to the determined OOK symbol boundary and OOK symbol index information, combined with the OOK symbol index configuration information occupied by the wake-up signal listening opportunity, the terminal can determine the starting OOK symbol position of the wake-up signal listening opportunity, and then Detect wake-up signals on wake-up signal listening opportunities.

Embodiment 2

In this embodiment, OOK symbols are used as time units, and synchronization time information is obtained based on the second indication information (OOK index information).

In this embodiment, the network side device configuration or protocol stipulates that a beacon signal listening set only contains one beacon signal listening opportunity, so there is no need to provide beacon signal listening opportunity index information. The beacon signal listening opportunity occupies 10 length of OOK symbols. The starting position of the beacon signal is aligned with the starting position of the OOK symbol.

The network side device configuration or protocol stipulates that the first configuration information includes:

(1) Time unit configuration information, which may include information such as division information of OOK symbol units, numbering cycles of OOK symbols, and other information. The numbering period of OOK symbols may be equal to the beacon signal period length. That is, OOK symbols are numbered within one beacon signal period.

(2) Wake-up signal configuration information, which may include: monitoring opportunity configuration information for the wake-up signal; the listening opportunity configuration information refers to time domain location information.

The first indication information carried in the beacon signal includes: OOK (ie, first time unit) index information. It should be noted that the OOK index is the OOK index within a beacon signal period.

Based on the time unit configuration information and the detected beacon signal, the terminal can determine the symbol boundary of OOK, thereby correcting the time offset that does not exceed the length of one OOK symbol. In addition, the offset from the starting position of the current beacon signal listening cycle can be determined based on the OOK index carried by the beacon signal. Based on the determined OOK symbol boundary and the OOK symbol index of the detected OOK beacon signal, combined with the OOK symbol index associated with the wake-up signal listening opportunity, the terminal can find the starting OOK symbol position of the wake-up signal listening opportunity, and then Detect wake-up signals on wake-up signal listening opportunities.

Optionally, in the wake-up signal listening opportunity configuration information, the wake-up signal listening opportunity can be configured relative to the starting position of the beacon signal listening period. For example, configure a time offset from the start position of the beacon signal listening cycle to determine the listening opportunity for the wake-up signal. In addition, the listening opportunity for the wake-up signal can be configured relative to the end position of the beacon signal listening duration, for example, configuring a time offset from the end position of the beacon signal listening duration to determine the listening opportunity for the wake-up signal.

Embodiment 3

In this embodiment, time synchronization information is obtained based on the first configuration information and the second indication information.

The network side device configuration or protocol agrees on a beacon signal set, and the beacon signal monitoring set includes at least one beacon signal monitoring opportunity. During a beacon signal listening period, the network side device sends a beacon signal set according to the beacon signal listening set. The number of the beacon signal is the number of the beacon signal in a beacon signal set. For example, in Figure 6, a beacon signal set includes M=8 beacon signals, and the listening opportunities of each beacon signal are numbered from 0 to 7. It should be noted that if a beacon signal listening set only contains one beacon signal listening opportunity, the number information of the beacon signal listening opportunity is not required.

The network side device configuration or protocol stipulates that the first configuration information includes:

(1) Time unit configuration information, which may include information such as division information of OOK symbol units, numbering cycles of OOK symbols, and other information. The numbering period of OOK symbols may be equal to the beacon signal period length. That is, in OOK symbols are numbered within a beacon signal period.

(2) Beacon signal configuration information. The beacon signal configuration information may include: information on the number of beacon signal monitoring opportunities included in the beacon signal monitoring set, M=8; and the time domain pattern of the beacon signal monitoring set configuration.

Among them, the time domain pattern configuration of the beacon signal monitoring set may specifically include at least one of the following:

a) Information about the slot and symbol (second time unit) of the beacon signal in the beacon signal monitoring set. The second time unit includes two types of time units: slot and symbol.

b) Time interval information of adjacent beacon signal monitoring opportunities. For example, the interval between four beacon signal monitoring opportunities in a slot is 2 symbol lengths. The distance between adjacent beacon signal monitoring opportunities in different slots is The interval between them is 1 slot.

c) First offset information, the first offset is the offset between the starting position of the beacon signal listening set and the starting position of the beacon signal listening period; for example, 4 slot lengths.

d) The time length information occupied by each beacon signal, for example, each beacon signal occupies 2 symbol lengths.

(3) Wake-up signal configuration information, which may include: wake-up signal listening opportunity configuration information. The listening opportunity configuration information refers to time domain location information.

It should be noted that the starting position of each beacon signal is aligned with the starting position of the symbol. According to the time domain pattern configuration of the beacon signal listening set, for example, in Figure 8, the network side device and terminal can learn the following two time location information of all beacon signals in a beacon signal set:

1. Symbol position information;

2. Slot location information.

In addition, the beacon signal carries first indication information, and the first indication information includes:

(1) System frame (first time unit) index information, for example, in Figure 8, indicating that the system frame index where the beacon signal set is located in the current beacon listening period is 1;

(2) Half-frame indication information; for example, the current half-frame is the first half-frame of the system frame.

(3) Index information of the beacon signal; each beacon signal will carry its corresponding index information.

The terminal can determine the following time information based on the detected beacon signal:

(1) Symbol boundary timing;

(2) Slot boundary timing;

(3) Timing of half-frame boundaries;

(4) Get the current wireless frame number.

As a result, the terminal can achieve synchronization at different time unit levels and then correct the time domain offset.

In this embodiment of the present application, the time bit of the beacon signal is configured through the first signal bearer and/or the network side device/protocol. Setting information is used to implement downlink synchronization or timing while the terminal receives the first signal, thereby achieving time offset correction and improving the reliability of wake-up signal reception.

For the synchronization information acquisition method provided by the embodiments of the present application, the execution subject may be a synchronization information acquisition device. In the embodiments of the present application, a method for obtaining synchronization information performed by a device for obtaining synchronization information is used as an example to illustrate the device for obtaining synchronization information provided by embodiments of the present application.

Figure 9 shows a schematic structural diagram of a device for obtaining synchronization information in an embodiment of the present application. As shown in Figure 9, the device 900 mainly includes: a receiving module 901 and an obtaining module 902.

In this embodiment of the present application, the receiving module 901 is used to receive the first signal sent by the network side device; the obtaining module 902 is used to obtain the time synchronization information and/or frequency synchronization information according to the reception of the first signal.

In a possible implementation, the time synchronization information includes at least one of the following:

Index information of the listening opportunity of the first signal;

Index information of the first time unit;

Boundary information of at least one time unit;

Boundary information of the first signal listening period in which the first signal is located;

Boundary information of the first signal monitoring set where the first signal is located, wherein the first signal monitoring set contains at least one first signal monitoring opportunity;

First indication information, the first indication information is used to indicate that the first signal is located in a second time unit of the first half or the last half.

In a possible implementation, the reception timing of the first signal is within one or more consecutive time units.

In a possible implementation, the time synchronization information and/or frequency synchronization information is used by the terminal to detect a wake-up signal.

In a possible implementation, as shown in Figure 9, the device may further include: a detection module 903, configured to detect a wake-up signal according to the time synchronization information and/or frequency synchronization information.

In a possible implementation, detecting a wake-up signal based on the time synchronization information and/or frequency synchronization information includes:

Determine the time information and/or frequency information of the wake-up signal listening opportunity according to the time synchronization information and/or frequency synchronization information;

The wake-up signal is detected on the wake-up signal listening opportunity according to the time information and/or frequency information.

In a possible implementation, the time information of the wake-up signal listening opportunity includes at least one of the following:

Boundary information of the time unit where the wake-up signal listening opportunity is located;

Offset information between the start time or the end time of the wake-up signal listening opportunity and the reference point.

In a possible implementation, the at least one time unit includes at least one of the following:

Amplitude shift keying ASK symbol;

system frame;

subframe;

time slot;

Orthogonal frequency division multiplexing OFDM symbols.

In a possible implementation, the first time unit and the second time unit are any of the following:

ASK symbol;

system frame;

subframe;

time slot;

OFDM symbols;

Wherein, the first time unit and the second time unit are the same; or, the first time unit and the second time unit are different.

In a possible implementation, the first signal carries second indication information, wherein the second indication information includes at least one of the following:

The index information of the first time unit;

the first instruction information;

Index information of the listening opportunity of the first signal.

In a possible implementation, the index information of the first time unit is the index information of the first time unit within the first signal listening period.

In a possible implementation, the second indication information is carried by at least one of the following:

a first sequence of the first signal;

The data field of the first signal.

In a possible implementation, the obtaining module 902 is also configured to obtain first configuration information, where the first configuration information is configured by the network side and/or agreed upon by a protocol.

In a possible implementation, the first configuration information includes at least one of the following:

Time unit configuration information;

First signal configuration information;

Wake-up signal configuration information.

In a possible implementation, the time unit configuration information includes at least one of the following: time unit division Minute information, number period information of time unit.

In a possible implementation, the first signal configuration information includes at least one of the following:

The number of first signals included in the first signal monitoring set;

The size of the first signal listening period;

Time domain pattern configuration information of the first signal monitoring set.

In a possible implementation, the time domain pattern configuration information of the first signal monitoring set includes at least one time domain pattern, the time domain pattern is related to the subcarrier spacing SCS, and/or the time domain pattern is related to The number of first signals included in the first signal monitoring set is related.

In a possible implementation, the time domain pattern configuration information of the first signal monitoring set includes at least one of the following:

Information on the time unit occupied by the first signal monitoring opportunity included in the first signal monitoring set;

Time interval information of adjacent first signal listening opportunities;

First offset information, the first offset information is the offset between the starting position or the end position of the first signal monitoring set and a reference point, where the reference point is the first signal The starting position or the end position of the first signal listening period where the listening set is located;

Information about the length of time occupied by the first signal listening opportunity.

In a possible implementation, the wake-up signal configuration information includes at least one of the following:

Time domain pattern configuration information of a wake-up signal listening set, wherein the wake-up signal listening set contains at least one wake-up signal listening opportunity;

Wake-up signal listening cycle;

Mapping relationship between the time domain pattern of the first signal monitoring set and the time domain pattern of the wake-up signal monitoring set.

In a possible implementation, the time domain pattern configuration information of the wake-up signal listening set includes:

The wake-up signal listening set contains information on time units occupied by wake-up signal listening opportunities;

Second offset information, the second offset is the offset of the wake-up signal listening opportunity from a reference point, where the reference point is the starting position of the first signal listening period, the first At least one of the end position of the period, the end position of the first signal monitoring set, and the starting position of the first signal monitoring set;

Time interval information of adjacent wake-up signal listening opportunities;

Information about the length of time occupied by wake-up signal listening opportunities.

In a possible implementation, the first signal is a beacon signal or a wake-up signal.

In a possible implementation, the wake-up signal includes a low-power wake-up signal.

The device for obtaining synchronization information in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system. It can also be a component in an electronic device, such as an integrated circuit or chip. The electronic device may be a terminal or other devices other than the terminal. For example, terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.

The synchronization information acquisition device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 2 and achieve the same technical effect. To avoid duplication, the details will not be described here.

Figure 10 shows a schematic structural diagram of another device for obtaining synchronization information in an embodiment of the present application. As shown in Figure 10, the device 1000 mainly includes: a sending module 1001.

In this embodiment of the present application, the sending module 1001 is configured to send a first signal to the terminal, where the first signal is used by the terminal to obtain time synchronization information and/or frequency synchronization information.

In a possible implementation, the time synchronization information includes at least one of the following:

Index information of the listening opportunity of the first signal;

Index information of the first time unit;

Boundary information of at least one time unit;

Boundary information of the first signal listening period in which the first signal is located;

Boundary information of the first signal monitoring set where the first signal is located, wherein the first signal monitoring set contains at least one first signal monitoring opportunity;

First indication information, the first indication information is used to indicate that the first signal is located in a second time unit of the first half or the last half.

In a possible implementation, the first signal carries second indication information, and the second indication information includes at least one of the following in the time synchronization information:

The index information of the first time unit;

The first instruction information;

Index information of the listening opportunity of the first signal.

In a possible implementation, the second indication information is carried by at least one of the following:

a first sequence of the first signal;

The data field of the first signal.

In a possible implementation, the sending module is further configured to configure the first configuration information for the terminal.

In a possible implementation, the first configuration information includes at least one of the following:

Time unit configuration information;

First signal configuration information;

Wake-up signal configuration information.

The synchronization information acquisition device provided by the embodiment of the present application can implement each process implemented by the method embodiment in Figure 5 and achieve the same technical effect. To avoid duplication, the details will not be described here.

Optionally, as shown in Figure 11, this embodiment of the present application also provides a communication device 1100, which includes a processor 1101 and a memory 1102. The memory 1102 stores programs or instructions that can be run on the processor 1101, such as , when the communication device 1100 is a terminal, when the program or instruction is executed by the processor 1101, each step of the above embodiment of the method 200 for obtaining synchronization information is implemented, and the same technical effect can be achieved. When the communication device 1100 is a network-side device, when the program or instruction is executed by the processor 1101, each step of the above embodiment of the method 500 for obtaining synchronization information is implemented, and the same technical effect can be achieved. To avoid duplication, it will not be described again here. .

An embodiment of the present application also provides a terminal, including a processor and a communication interface. The processor is used to implement each step of the above embodiment of the method 200 for obtaining synchronization information, and the communication interface is used to communicate with external devices. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect. Specifically, FIG. 12 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.

The terminal 1200 includes but is not limited to: a radio frequency unit 1201, a network module 1202, an audio output unit 1203, an input unit 1204, a sensor 1205, a display unit 1206, a user input unit 1207, an interface unit 1208, a memory 1209 and at least some of the components of the processor 1210.

Those skilled in the art can understand that the terminal 1200 may also include a power supply (such as a battery) that supplies power to various components. The power supply may be logically connected to the processor 1210 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions. The terminal structure shown in Figure 12 does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.

It should be understood that in the embodiment of the present application, the input unit 1204 may include a graphics processing unit (Graphics Processing Unit, GPU) 12041 and a microphone 12042. The GPU 12041 is used for recording images by an image capture device (such as a camera) in the video capture mode or the image capture mode. The image data obtained from still pictures or videos is processed. The display unit 1206 may include a display panel 12061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1207 includes at least one of a touch panel 12071 and other input devices 12072 . Touch panel 12071, also known as touch screen. The touch panel 12071 may include two parts: a touch detection device and a touch controller. Other input devices 12072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.

In this embodiment of the present application, after receiving the downlink data from the network side device, the radio frequency unit 1201 can transmit it to the processing unit. The processor 1210 performs processing; in addition, the radio frequency unit 1201 can send uplink data to the network side device. Generally, the radio frequency unit 1201 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.

Memory 1209 may be used to store software programs or instructions as well as various data. The memory 1209 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc. Additionally, memory 1209 may include volatile memory or nonvolatile memory, or memory 1209 may include both volatile and nonvolatile memory. Among them, non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM). Memory 1209 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 1210 may include one or more processing units; optionally, the processor 1210 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above modem processor may not be integrated into the processor 1210.

Among them, the radio frequency unit 1201 is used to receive the first signal sent by the network side device;

Processor 1210, configured to obtain time synchronization information and/or frequency synchronization information according to reception of the first signal.

An embodiment of the present application also provides a network-side device, including a processor and a communication interface. The processor is used to implement each step of the above embodiment of the method 500 for obtaining synchronization information, and the communication interface is used to communicate with an external device. This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment. Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this network-side device embodiment, and can achieve the same technical effect.

Specifically, the embodiment of the present application also provides a network side device. As shown in Figure 13, the network side device 1300 includes: an antenna 1301, a radio frequency device 1302, a baseband device 1303, a processor 1304 and a memory 1305. The antenna 1301 is connected to the radio frequency device 1302. In the uplink direction, the radio frequency device 1302 receives information through the antenna 1301 and sends the received information to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes the information to be sent and sends it to the radio frequency device 1302. The radio frequency device 1302 processes the received information and passes it through the antenna 1301. Send it out.

The method performed by the network side device in the above embodiment can be implemented in the baseband device 1303, which includes a baseband processor.

The baseband device 1303 may include, for example, at least one baseband board on which multiple chips are disposed, as shown in FIG. Program to perform the network device operations shown in the above method embodiments.

The network side device may also include a network interface 1306, which is, for example, a common public radio interface (CPRI).

Specifically, the network side device 1300 in this embodiment of the present invention also includes: instructions or programs stored in the memory 1305 and executable on the processor 1304. The processor 1304 calls the instructions or programs in the memory 1305 to execute each of the steps shown in Figure 10 The method of module execution and achieving the same technical effect will not be described in detail here to avoid duplication.

Embodiments of the present application also provide a readable storage medium. Programs or instructions are stored on the readable storage medium. When the program or instructions are executed by a processor, each process of the above synchronization information acquisition method embodiment is implemented, and can To achieve the same technical effect, to avoid repetition, we will not repeat them here.

Wherein, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.

An embodiment of the present application further provides a chip. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the above method for obtaining synchronization information. Each process in the example can achieve the same technical effect. To avoid repetition, we will not repeat it here.

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

Embodiments of the present application further provide a computer program/program product, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the above method for obtaining synchronization information. Each process of the embodiment can achieve the same technical effect, so to avoid repetition, it will not be described again here.

Embodiments of the present application also provide a system for obtaining synchronization information, including: a terminal and a network side device. The terminal can be used to perform the steps of the method 200 for obtaining synchronization information as described above. The network side device can be used to perform The steps of the method 500 for obtaining synchronization information as described above.

It should be noted that, in this document, the terms "comprising", "comprises" or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, and also includes other elements not expressly listed or included for such process, method, article or apparatus. inherent elements. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of additional identical elements in a process, method, article or apparatus that includes that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. Functions may be performed, for example, the methods described may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation. Based on this understanding, the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology. The computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to cause a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in various embodiments of this application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Inspired by this application, many forms can be made without departing from the purpose of this application and the scope protected by the claims, all of which fall within the protection of this application.

Claims (36)

1. A method for obtaining synchronized information, including:

   The terminal receives the first signal sent by the network side device;

   The terminal obtains time synchronization information and/or frequency synchronization information according to reception of the first signal.
2. The method according to claim 1, wherein the time synchronization information includes at least one of the following:

   Index information of the listening opportunity of the first signal;

   Index information of the first time unit;

   Boundary information of at least one time unit;

   Boundary information of the first signal listening period in which the first signal is located;

   Boundary information of the first signal monitoring set where the first signal is located, wherein the first signal monitoring set contains at least one first signal monitoring opportunity;

   First indication information, the first indication information is used to indicate that the first signal is located in a second time unit of the first half or the last half.
3. The method according to claim 1, wherein the reception timing of the first signal is within one or more consecutive time units.
4. The method according to claim 1 or 2, wherein the time synchronization information and/or frequency synchronization information is used for the terminal to detect a wake-up signal.
5. The method according to claim 1, wherein, after obtaining the time synchronization information and/or frequency synchronization information, the method further includes:

   The terminal detects a wake-up signal based on the time synchronization information and/or frequency synchronization information.
6. The method according to claim 5, wherein the terminal detects a wake-up signal according to the time synchronization information and/or frequency synchronization information, including:

   The terminal determines the time information and/or frequency information of the wake-up signal listening opportunity based on the time synchronization information and/or frequency synchronization information;

   The wake-up signal is detected on the wake-up signal listening opportunity according to the time information and/or frequency information.
7. The method according to claim 6, wherein the time information of the wake-up signal listening opportunity includes at least one of the following:

   Boundary information of the time unit where the wake-up signal listening opportunity is located;

   Offset information between the start time or the end time of the wake-up signal listening opportunity and the reference point.
8. The method of claim 2, wherein the at least one time unit includes at least one of the following:

   Amplitude shift keying ASK symbol;

   system frame;

   subframe;

   time slot;

   Orthogonal frequency division multiplexing OFDM symbols.
9. The method according to claim 2, wherein the first time unit and the second time unit are any of the following:

   ASK symbol;

   system frame;

   subframe;

   time slot;

   OFDM symbols;

   Wherein, the first time unit and the second time unit are the same; or, the first time unit and the second time unit are different.
10. The method according to claim 2, wherein the first signal carries second indication information, wherein the second indication information includes at least one of the following:

    The index information of the first time unit;

    the first instruction information;

    Index information of the listening opportunity of the first signal.
11. The method according to claim 10, wherein the index information of the first time unit is the index information of the first time unit within the first signal listening period.
12. The method according to claim 10, wherein the second indication information is carried by at least one of the following:

    a first sequence of the first signal;

    The data field of the first signal.
13. The method according to claim 1, wherein before the terminal receives the first signal sent by the network side device, the method further includes:

    The terminal obtains first configuration information, and the first configuration information is configured by the network side and/or agreed upon by a protocol.
14. The method of claim 13, wherein the first configuration information includes at least one of the following:

    Time unit configuration information;

    First signal configuration information;

    Wake-up signal configuration information.
15. The method according to claim 14, wherein the time unit configuration information includes at least one of the following: time unit division information, time unit numbering cycle information.
16. The method according to claim 14, wherein the first signal configuration information includes at least one of the following:

    The number of first signals included in the first signal monitoring set;

    The size of the first signal listening period;

    Time domain pattern configuration information of the first signal monitoring set.
17. The method according to claim 16, wherein the time domain pattern configuration information of the first signal monitoring set includes at least one time domain pattern, the time domain pattern is related to the subcarrier spacing SCS, and/or the time domain pattern The domain pattern is related to the number of first signals included in the first signal listening set.
18. The method according to claim 16, wherein the time domain pattern configuration information of the first signal monitoring set includes at least one of the following:

    Information on the time unit occupied by the first signal monitoring opportunity included in the first signal monitoring set;

    Time interval information of adjacent first signal listening opportunities;

    First offset information, the first offset information is the offset between the starting position or the end position of the first signal monitoring set and a reference point, where the reference point is the first signal The starting position or the end position of the first signal listening period where the listening set is located;

    Information about the length of time occupied by the first signal listening opportunity.
19. The method according to claim 14, wherein the wake-up signal configuration information includes at least one of the following:

    Time domain pattern configuration information of a wake-up signal listening set, wherein the wake-up signal listening set contains at least one wake-up signal listening opportunity;

    Wake-up signal listening cycle;

    Mapping relationship between the time domain pattern of the first signal monitoring set and the time domain pattern of the wake-up signal monitoring set.
20. The method according to claim 19, wherein the time domain pattern configuration information of the wake-up signal listening set includes:

    The wake-up signal listening set contains information on time units occupied by wake-up signal listening opportunities;

    Second offset information, the second offset is the offset of the wake-up signal listening opportunity from a reference point, where the reference point is the starting position of the first signal listening period, the first At least one of the end position of the period, the end position of the first signal monitoring set, and the starting position of the first signal monitoring set;

    Time interval information of adjacent wake-up signal listening opportunities;

    Information about the length of time occupied by wake-up signal listening opportunities.
21. The method according to any one of claims 1 to 20, wherein the first signal is a beacon signal or a wake-up signal.
22. The method of claim 4, wherein the wake-up signal includes a low-power wake-up signal.
23. A method for obtaining synchronized information, including:

    The network side device sends a first signal to the terminal, wherein the first signal is used by the terminal to obtain time synchronization information and/or frequency synchronization information.
24. The method according to claim 23, wherein the time synchronization information includes at least one of the following:

    Index information of the listening opportunity of the first signal;

    Index information of the first time unit;

    Boundary information of at least one time unit;

    Boundary information of the first signal listening period in which the first signal is located;

    Boundary information of the first signal monitoring set where the first signal is located, wherein the first signal monitoring set contains at least one first signal monitoring opportunity;

    First indication information, the first indication information is used to indicate that the first signal is located in a second time unit of the first half or the last half.
25. The method of claim 24, wherein the first signal carries second indication information, and the second indication information includes at least one of the following in the time synchronization information:

    The index information of the first time unit;

    the first instruction information;

    Index information of the listening opportunity of the first signal.
26. The method according to claim 25, wherein the second indication information is carried by at least one of the following:

    a first sequence of the first signal;

    The data field of the first signal.
27. The method according to claim 23, wherein before the network side device sends the first signal to the terminal, the method further includes:

    The network side device configures first configuration information for the terminal.
28. The method of claim 27, wherein the first configuration information includes at least one of the following:

    Time unit configuration information;

    first signal configuration information;

    Wake-up signal configuration information.
29. A device for obtaining synchronization information, including:

    A receiving module, configured to receive the first signal sent by the network side device;

    An acquisition module, configured to acquire time synchronization information and/or frequency synchronization information according to reception of the first signal.
30. The device of claim 29, further comprising:

    A detection module, configured to detect a wake-up signal according to the time synchronization information and/or frequency synchronization information.
31. The device according to claim 30, wherein detecting a wake-up signal according to the time synchronization information and/or frequency synchronization information includes:

    Determine the time information and/or frequency information of the wake-up signal listening opportunity according to the time synchronization information and/or frequency synchronization information;

    The wake-up signal is detected on the wake-up signal listening opportunity according to the time information and/or frequency information.
32. The device according to claim 29, wherein the obtaining module is further configured to obtain first configuration information, and the first configuration information is configured by a network side and/or agreed upon by a protocol.
33. A device for obtaining synchronization information, including:

    A sending module, configured to send a first signal to the terminal, where the first signal is used by the terminal to obtain time synchronization information and/or frequency synchronization information.
34. A terminal, including a processor and a memory, the memory stores programs or instructions that can be run on the processor, and when the programs or instructions are executed by the processor, the implementation of any one of claims 1 to 22 is achieved. The steps of the method for obtaining synchronization information described above.
35. A network side device, including a processor and a memory. The memory stores programs or instructions that can be run on the processor. When the program or instructions are executed by the processor, any one of claims 23 to 28 is implemented. The steps of the method for obtaining synchronization information described in the item.
36. A readable storage medium storing programs or instructions on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method for obtaining synchronization information as described in any one of claims 1 to 22 are implemented, Or implement the steps of the method for obtaining synchronization information as described in any one of claims 23 to 28.