CN112636858A - Multi-network device cooperation time service method, system, electronic device and medium - Google Patents
Multi-network device cooperation time service method, system, electronic device and medium Download PDFInfo
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Abstract
The embodiment of the disclosure discloses a time service method, a system, an electronic device and a medium for multi-network device cooperation, wherein the method comprises the following steps: each network device in the plurality of network devices respectively sends a time service signaling and a positioning signal to the terminal device at the same sending time, wherein the time service signaling carries the sending time; the terminal equipment determines a plurality of receiving moments of each time service signaling; the terminal equipment determines a plurality of downlink time delay values based on the positioning signals; and determining a time service adjusting value based on the plurality of sending moments, the plurality of receiving moments and the plurality of downlink time delay values, so that high-stability and high-precision time synchronization can be realized.
Description
Technical Field
The present disclosure relates to the field of communications, and in particular, to a time service method, system, electronic device, and medium for multi-network device cooperation.
Background
The related technology can meet the requirement of the air interface time service precision of the terminal under the ideal network time service condition of the wireless terminal, but because the air interface time service technologies are all transparent transmission, the anti-attack capability is poor, and the stability is low. When the terminal is maliciously attacked or interfered, the terminal may obtain wrong time service time without self-knowledge, so that the error of the time service result is increased.
Disclosure of Invention
In order to solve the problems in the related art, embodiments of the present disclosure provide a time service method, system, electronic device and medium for multi-network device cooperation.
In a first aspect, an embodiment of the present disclosure provides a time service method for multi-network device cooperation.
Specifically, the time service method for multi-network device cooperation comprises the following steps:
each network device in the plurality of network devices respectively sends a time service signaling and a positioning signal to the terminal device at the same sending time, wherein the time service signaling carries the sending time;
the terminal equipment determines a plurality of receiving moments of each time service signaling;
the terminal equipment determines a plurality of downlink time delay values based on the positioning signals;
and determining a time service adjusting value based on the plurality of sending moments, the plurality of receiving moments and the plurality of downlink time delay values.
In a second aspect, a time service method for a network device is provided in the embodiments of the present disclosure.
Specifically, the time service method for the network device includes:
acquiring a control instruction;
and based on the control instruction, sending a time service signaling and a positioning signal to the terminal equipment at the sending time, wherein the time service signaling carries the information of the sending time.
In a third aspect, an embodiment of the present disclosure provides a time service method for a terminal device.
Specifically, the time service method for the terminal device comprises the following steps:
receiving time service signaling and positioning signals from a plurality of network devices, and recording the receiving time of receiving the time service signaling, wherein the time service signaling carries the sending time;
determining a plurality of downlink delay values based on the positioning signal;
and determining a time service adjusting value based on the sending time, the receiving times and the downlink time delay values.
With reference to the third aspect, in a first implementation manner of the third aspect, the determining a time service adjustment value based on the multiple transmission time instants, the multiple reception time instants, and the multiple downlink delay values includes:
determining whether an abnormal value exists in a plurality of downlink delay values;
and under the condition that the abnormal value exists, eliminating the network equipment corresponding to the abnormal value, and determining the time service adjusting value based on the sending time, the receiving time and the downlink time delay value of other network equipment.
With reference to the third aspect, in a second implementation manner of the third aspect, the determining a time service adjustment value based on the multiple transmission time instants, the multiple reception time instants, and the multiple downlink delay values includes:
under the condition that the sending time carried in the time service signaling is different, the time service signaling which is not tampered is determined;
and determining a time service adjusting value based on the sending time, the receiving time and the downlink time delay value of the network equipment corresponding to the time service signaling which is not tampered.
With reference to the third aspect, the first or second implementation manner of the third aspect, in a third implementation manner of the third aspect, the determining, by the terminal device, a plurality of downlink delay values based on the positioning signal includes:
acquiring timing advance information;
determining a downlink time delay correction value based on the positioning signal;
and determining a downlink delay value based on the timing advance information and the downlink delay correction value.
With reference to the third implementation manner of the third aspect, in a fourth implementation manner of the third aspect, the obtaining timing advance information includes:
acquiring timing advance information from the random access response; or
And acquiring timing advance information from the time service signaling.
With reference to the fourth implementation manner of the third aspect, in a fifth implementation manner of the third aspect, the network device includes a base station, the multiple network devices include a serving base station and at least two assisting base stations, and the acquiring of the timing advance information from the time service signaling includes acquiring the timing advance information from the serving base station.
In a third aspect, an embodiment of the present disclosure provides a time synchronization system with multiple network devices cooperating.
Specifically, the multi-network device cooperative time synchronization system includes:
each network device in the plurality of network devices is used for respectively sending a time service signaling and a positioning signal to the terminal device at the same sending time, and the time service signaling carries the sending time;
the terminal equipment is configured to determine a plurality of receiving moments when each time service signaling is received, and determine a plurality of downlink time delay values based on the positioning signals; and determining a time service adjusting value based on the plurality of sending moments, the plurality of receiving moments and the plurality of downlink time delay values.
In a fourth aspect, the present disclosure provides a network device, including a memory and a processor, wherein the memory is configured to store one or more computer instructions, and wherein the one or more computer instructions are executed by the processor to implement the method according to the second aspect.
In a fifth aspect, the present disclosure provides a terminal device, including a memory and a processor, where the memory is configured to store one or more computer instructions, where the one or more computer instructions are executed by the processor to implement the method according to any one of the third aspect and the first to fifth implementation manners of the third aspect.
In a sixth aspect, an embodiment of the present disclosure provides a computer-readable storage medium having stored thereon computer instructions, which, when executed by a processor, implement the method according to any one of the first to fifth implementation manners of the first, second, third, and third aspects.
In a seventh aspect, this disclosure provides a computer program that when executed by a processor implements the method according to any one of the first to fifth implementation manners of the first, second, third, and third aspects.
According to the technical scheme provided by the embodiment of the disclosure, each network device in a plurality of network devices respectively sends a time service signaling and a positioning signal to a terminal device at the same sending time, wherein the sending time is carried in the time service signaling; the terminal equipment determines a plurality of receiving moments of each time service signaling; the terminal equipment determines a plurality of downlink time delay values based on the positioning signals; and determining a time service adjusting value based on the plurality of sending moments, the plurality of receiving moments and the plurality of downlink time delay values, so that high-stability and high-precision time synchronization can be realized.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
Other features, objects, and advantages of the present disclosure will become more apparent from the following detailed description of non-limiting embodiments when taken in conjunction with the accompanying drawings. In the drawings:
FIG. 1 shows a schematic diagram of an application scenario according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of a time service method for multi-network device cooperation according to an embodiment of the disclosure;
fig. 3 illustrates a flow chart for determining a plurality of downlink delay values based on a positioning signal according to an embodiment of the disclosure;
FIG. 4 shows a flow chart of a time service method for a network device according to an embodiment of the disclosure;
FIG. 5 is a flow chart of a time service method for a terminal device according to an embodiment of the disclosure;
FIG. 6 shows a block diagram of an electronic device in accordance with an embodiment of the disclosure;
fig. 7 is a schematic structural diagram of a computer system suitable for implementing the time service method for multi-network device cooperation according to the embodiment of the present disclosure.
Detailed Description
Hereinafter, exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement them. Also, for the sake of clarity, parts not relevant to the description of the exemplary embodiments are omitted in the drawings.
In the present disclosure, it is to be understood that terms such as "including" or "having," etc., are intended to indicate the presence of the disclosed features, numbers, steps, behaviors, components, parts, or combinations thereof, and are not intended to preclude the possibility that one or more other features, numbers, steps, behaviors, components, parts, or combinations thereof may be present or added.
It should be further noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As described above, the related art can satisfy the requirement of the air interface timing precision of the terminal under the ideal network timing condition of the wireless terminal, but because the air interface timing technologies are all transparent transmission, the anti-attack capability is poor, and the stability is low. When the terminal is maliciously attacked or interfered, the terminal may obtain wrong time service time without self-knowledge, so that the error of the time service result is increased.
In view of the above, the present disclosure provides a time service method for multi-network device cooperation, where each network device in a plurality of network devices respectively sends a time service signaling and a positioning signal to a terminal device at the same sending time, where the time service signaling carries the sending time; the terminal equipment determines a plurality of receiving moments of each time service signaling; the terminal equipment determines a plurality of downlink time delay values based on the positioning signals; and determining a time service adjusting value based on the plurality of sending moments, the plurality of receiving moments and the plurality of downlink time delay values, so that high-stability and high-precision time synchronization can be realized.
Fig. 1 shows a schematic diagram of an application scenario according to an embodiment of the present disclosure.
As shown in fig. 1, the application scenario includes a plurality of network devices 111, 112, 113 and a terminal device 120. Network device may be a base station, for example, network device 111 may be a serving base station of terminal device 120, and network devices 112 and 113 may be auxiliary base stations for time service. The terminal device 120 has a time service requirement, and the terminal device 120 may receive the time service under cooperation of one serving base station and two assisting base stations, for example.
The upper layer (such as the MEC, the core network, the server and the like) controls the three base stations to carry out ordered scheduling and standard transmission of time synchronization related information, and each base station can carry out transmission and cooperation of air interface time service data. The wireless terminal 120 with time service requirement obtains the standard time information by storing, processing and calculating the received time service related data of the three base stations.
It should be noted that three network devices are shown in fig. 1, but the embodiment of the present disclosure is not limited thereto, and the method of the embodiment of the present disclosure may be implemented by two or more than three network devices.
Fig. 2 is a flowchart illustrating a time service method for multi-network device cooperation according to an embodiment of the disclosure.
As shown in fig. 2, the method includes operations S210 to S240.
In operation S210, each network device in the multiple network devices respectively sends a time service signaling and a positioning signal to the terminal device at the same sending time, where the time service signaling carries the sending time;
in operation S220, the terminal device determines a plurality of receiving times at which each time service signaling is received;
in operation S230, the terminal device determines a plurality of downlink delay values based on the positioning signal;
in operation S240, a time service adjustment value is determined based on the plurality of sending times, the plurality of receiving times, and the plurality of downlink delay values.
In the following, three network devices are taken as an example, and other numbers of network devices may be implemented with reference to the method.
According to the embodiment of the present disclosure, in operation S210, an upper layer (e.g., MEC, core network, server, etc.) may schedule three network devices to simultaneously send local time information (t) carrying the network devicesbs1，tbs2，tbs3) The time service signaling of (2) may be transmitted in a unicast or broadcast manner, and may use LTE MIB, LTE SIB16, 5G SIB9, or the like. Wherein, the simultaneous transmission means that the upper layer notifies three network devices to simultaneously transmit time service signaling at a certain time according to local time of the network devices, that is, tbs1，tbs2，tbs3Should be the same. Because the network equipment passes through the upper-layer time service, the time of each network equipment is considered to be relatively accurate, and the error can be ignored.
In addition, the three network devices send Positioning signals, such as Positioning Reference Signals (PRS) or 5G SIB14 Positioning signals, simultaneously with the time service signaling.
According to the embodiment of the disclosure, the positioning signal is used for calculating the time delay change value to compensate the time delay in the method, and the positioning signal and the time service signaling are simultaneously transmitted, so that the time delays experienced by the positioning signal and the time service signaling are basically the same, and the time service signaling time delay change is compensated by the calculation of the positioning signal.
According to the embodiment of the present disclosure, in operation S220, on one hand, the terminal device is in the corresponding frequency bandRespectively receiving three time service signaling, and respectively recording the receiving time (t) by the local time of the terminal equipmentue1,tue2,tue3). On the other hand, the terminal device determines a plurality of downlink delay values based on the positioning signal in operation S230.
Fig. 3 illustrates a flow chart for determining a plurality of downlink delay values based on a positioning signal according to an embodiment of the disclosure.
As shown in fig. 3, the method includes operations S310 to S330.
In operation S310, timing advance ta (time advance) information t is acquiredTA；
Determining a downlink delay correction value based on the positioning signal in operation S320;
in operation S330, a downlink delay value is determined based on the timing advance information and the downlink delay correction value.
According to an embodiment of the present disclosure, timing advance information tTAThe time delay is a time delay experienced by time service signaling transmitted from the network equipment to the wireless terminal, and the time delay is a pre-estimated value rather than an actual value.
According to the embodiments of the present disclosure, the timing advance information may be obtained in various ways, for example, the obtaining of the timing advance information includes:
acquiring timing advance information from a Random Access Response (RAR); or
The timing advance information is obtained from the time service signaling, that is, the network device carries the local time and the timing advance information of the network device when sending the time service signaling, and the terminal device can obtain the timing advance information from the time service signaling when receiving the time service signaling.
According to the embodiment of the present disclosure, the network device includes a base station, the plurality of network devices includes a serving base station and at least two assisting base stations, and the acquiring of the timing advance information from the time service signaling includes acquiring the timing advance information from the serving base station. That is, only one serving base station transmits timing advance information, and the assisting base station does not transmit timing advance information.
According to the embodiment of the disclosure, three time service signaling issues of three base stations are respectively passed throughExperiences three time delays, tTAOnly the time delay between the service base station and the terminal equipment needs to be calculated, and the actual time delay between the service base station and the terminal equipment when the time service signaling is issued is relative to the previously calculated time delay tTAPossibly having real-time variation, a correction value t for time service signaling delay of the serving base station needs to be determined1。
According to the embodiment of the present disclosure, in operation S320, a downlink delay correction value is determined based on the positioning signal. For example, the terminal device may perform correlation operation based on the received PRS signal and the local reference signal to obtain the modified value t of the downlink delay of the three network devices by using good correlation characteristics of the PRS signal1、t2、t3. Wherein, the local reference signal is a PRS signal informed to the terminal by the network in advance. The PRS signal is generated by modulating a binary pseudo-random sequence, has good correlation characteristics, and the terminal can calculate the correlation function of the received PRS sequence and the reference PRS sequence, wherein the position of the peak value of the correlation function corresponds to the correction value tk(k＝1,2,3)。
According to the embodiment of the present disclosure, in operation S330, a downlink delay value, i.e., t, is determined based on the timing advance information and the downlink delay correction valueTA+t1、tTA+t2、tTA+t3。
Referring back to fig. 2, in operation S240, based on a plurality of the sending times, a plurality of the receiving times, and a plurality of the downlink delay values, a time service adjustment value may be determined:
toffs＝Ek∈K[tuek-tbsk-(tTA+tk)]
where K is {1,2,3 }. Terminal equipment is based on toffsAnd adjusting time to complete time service.
According to an embodiment of the present disclosure, the determining a time service adjustment value based on the plurality of sending times, the plurality of receiving times, and the plurality of downlink time delay values includes:
determining whether an abnormal value exists in a plurality of downlink delay values;
and under the condition that the abnormal value exists, eliminating the network equipment corresponding to the abnormal value, and determining the time service adjusting value based on the sending time, the receiving time and the downlink time delay value of other network equipment.
For example, the downlink delay value t may be measured by a predetermined thresholdTA+tkThe threshold value may be set to 1 microsecond, for example. Or, whether an abnormal value exists can be judged through the numerical relation between the downlink delay values of different network devices. The above modes can be adopted separately or in combination, and the present disclosure does not limit this. The judgment can judge whether the time service signaling is interfered by malicious forwarding or not. In this case, K in the above formula represents the time service information of the network device determined to be valid, and the information of other network devices is discarded, thereby ensuring high accuracy and high stability of the time service result.
According to an embodiment of the present disclosure, the determining a time service adjustment value based on the plurality of sending times, the plurality of receiving times, and the plurality of downlink time delay values includes:
under the condition that the sending time carried in the time service signaling is different, the time service signaling which is not tampered is determined;
and determining a time service adjusting value based on the sending time, the receiving time and the downlink time delay value of the network equipment corresponding to the time service signaling which is not tampered.
According to the embodiment of the disclosure, a plurality of network devices transmit time service signaling, namely t, at the same transmission timebs1，tbs2，tbs3Should be the same if t is recorded in the time service signaling received by the terminal equipmentbs1，tbs2，tbs3If the time service signaling is not identical, the time service signaling is indicated to be tampered with, so that related data of the tampered network equipment can be discarded, a time service adjusting value is determined based on data of other network equipment, the safety of a time service process is guaranteed, and the accuracy of a time service result is further guaranteed.
FIG. 4 shows a flow chart of a time service method for a network device according to an embodiment of the disclosure.
As shown in fig. 4, the method includes operations S410 and S420.
In operation S410, a control instruction is acquired;
in operation S420, based on the control instruction, a time service signaling and a positioning signal are sent to a terminal device at a sending time, where the time service signaling carries information of the sending time.
According to the embodiment of the disclosure, the control instruction may be generated locally in the network device, may be received from the outside, or may be received from the outside and processed locally. For example, an upper layer (e.g., MEC, core network, server, etc.) may send control signals to the network device, which are processed locally at the network device to generate control instructions.
According to the embodiment of the disclosure, a sending time may be specified in the control instruction, and in response to obtaining the control instruction, the network device may send the time service signaling and the positioning signal to the terminal device at the sending time, so that the terminal device performs time calibration based on the time service signaling and the positioning signal.
Fig. 5 shows a flowchart of a time service method for a terminal device according to an embodiment of the disclosure.
As shown in fig. 5, the method includes operations S510 to S530.
In operation S510, receiving time service signaling and positioning signals from a plurality of network devices, and recording a receiving time of receiving the time service signaling, where the time service signaling carries a sending time;
determining a plurality of downlink delay values based on the positioning signal in operation S520;
in operation S530, a time service adjustment value is determined based on the sending time, the receiving times, and the downlink delay values.
According to an embodiment of the present disclosure, the determining a time service adjustment value based on the plurality of sending times, the plurality of receiving times, and the plurality of downlink time delay values includes:
determining whether an abnormal value exists in a plurality of downlink delay values;
and under the condition that the abnormal value exists, eliminating the network equipment corresponding to the abnormal value, and determining the time service adjusting value based on the sending time, the receiving time and the downlink time delay value of other network equipment.
According to an embodiment of the present disclosure, the determining a time service adjustment value based on the plurality of sending times, the plurality of receiving times, and the plurality of downlink time delay values includes:
under the condition that the sending time carried in the time service signaling is different, the time service signaling which is not tampered is determined;
and determining a time service adjusting value based on the sending time, the receiving time and the downlink time delay value of the network equipment corresponding to the time service signaling which is not tampered.
According to an embodiment of the present disclosure, the determining a plurality of downlink delay values based on the positioning signal includes:
acquiring timing advance information;
determining a downlink time delay correction value based on the positioning signal;
and determining a downlink delay value based on the timing advance information and the downlink delay correction value.
According to an embodiment of the present disclosure, the acquiring timing advance information includes:
acquiring timing advance information from the random access response; or
And acquiring timing advance information from the time service signaling.
According to the embodiment of the present disclosure, the network device includes a base station, the plurality of network devices includes a serving base station and at least two assisting base stations, and the acquiring of the timing advance information from the time service signaling includes acquiring the timing advance information from the serving base station.
For the time service method for the terminal device, reference may be made to the related description of fig. 2 and fig. 3, and details are not repeated here.
The present disclosure also discloses an electronic device, and fig. 6 shows a block diagram of an electronic device according to an embodiment of the present disclosure.
As shown in fig. 6, the electronic device 600 includes a memory 601 and a processor 602, where the memory 601 is used for storing one or more computer instructions, and the electronic device 600 may be implemented as a network device or a terminal device according to the stored instructions.
In a network device, the one or more computer instructions are executed by the processor 602 to implement the following operations, according to an embodiment of the disclosure:
acquiring a control instruction;
and based on the control instruction, sending a time service signaling and a positioning signal to the terminal equipment at the sending time, wherein the time service signaling carries the information of the sending time.
In a terminal device, the one or more computer instructions are executed by the processor 602 to implement the following operations:
receiving time service signaling and positioning signals from a plurality of network devices, and recording the receiving time of receiving the time service signaling, wherein the time service signaling carries the sending time;
determining a plurality of downlink delay values based on the positioning signal;
and determining a time service adjusting value based on the sending time, the receiving times and the downlink time delay values.
According to an embodiment of the present disclosure, the determining a time service adjustment value based on the plurality of sending times, the plurality of receiving times, and the plurality of downlink time delay values includes:
determining whether an abnormal value exists in a plurality of downlink delay values;
and under the condition that the abnormal value exists, eliminating the network equipment corresponding to the abnormal value, and determining the time service adjusting value based on the sending time, the receiving time and the downlink time delay value of other network equipment.
According to an embodiment of the present disclosure, the determining a time service adjustment value based on the plurality of sending times, the plurality of receiving times, and the plurality of downlink time delay values includes:
under the condition that the sending time carried in the time service signaling is different, the time service signaling which is not tampered is determined;
and determining a time service adjusting value based on the sending time, the receiving time and the downlink time delay value of the network equipment corresponding to the time service signaling which is not tampered.
According to the embodiment of the present disclosure, the determining, by the terminal device, a plurality of downlink delay values based on the positioning signal includes:
acquiring timing advance information;
determining a downlink time delay correction value based on the positioning signal;
and determining a downlink delay value based on the timing advance information and the downlink delay correction value.
According to an embodiment of the present disclosure, the acquiring timing advance information includes:
acquiring timing advance information from the random access response; or
And acquiring timing advance information from the time service signaling.
According to the embodiment of the present disclosure, the network device includes a base station, the plurality of network devices includes a serving base station and at least two assisting base stations, and the acquiring of the timing advance information from the time service signaling includes acquiring the timing advance information from the serving base station.
The embodiment of the present disclosure further provides a time synchronization system for multi-network device cooperation, including:
each network device in the plurality of network devices is used for respectively sending a time service signaling and a positioning signal to the terminal device at the same sending time, and the time service signaling carries the sending time;
the terminal equipment is configured to determine a plurality of receiving moments when each time service signaling is received, and determine a plurality of downlink time delay values based on the positioning signals; and determining a time service adjusting value based on the plurality of sending moments, the plurality of receiving moments and the plurality of downlink time delay values.
According to the embodiment of the present disclosure, the network device and the terminal device may be implemented as, for example, the electronic device 600 shown in fig. 6, which is not described herein again.
Fig. 7 is a schematic structural diagram of a computer system suitable for implementing the time service method for multi-network device cooperation according to the embodiment of the present disclosure.
As shown in fig. 7, the computer system 700 includes a processing unit 701 that can execute various processes in the above-described embodiments according to a program stored in a Read Only Memory (ROM)702 or a program loaded from a storage section 708 into a Random Access Memory (RAM) 703. In the RAM 703, various programs and data necessary for the operation of the system 700 are also stored. The processing unit 701, the ROM 702, and the RAM 703 are connected to each other by a bus 704. An input/output (I/O) interface 705 is also connected to bus 704.
The following components are connected to the I/O interface 705: an input portion 706 including a keyboard, a mouse, and the like; an output section 707 including a display such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage section 708 including a hard disk and the like; and a communication section 709 including a network interface card such as a LAN card, a modem, or the like. The communication section 709 performs communication processing via a network such as the internet. A drive 710 is also connected to the I/O interface 705 as needed. A removable medium 711 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 710 as necessary, so that a computer program read out therefrom is mounted into the storage section 708 as necessary. The processing unit 701 may be implemented as a CPU, a GPU, a TPU, an FPGA, an NPU, or other processing units.
In particular, the above described methods may be implemented as computer software programs according to embodiments of the present disclosure. For example, embodiments of the present disclosure include a computer program product comprising a computer program tangibly embodied on a medium readable thereby, the computer program comprising program code for performing the above-described method. In such an embodiment, the computer program can be downloaded and installed from a network through the communication section 709, and/or installed from the removable medium 711.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units or modules described in the embodiments of the present disclosure may be implemented by software or by programmable hardware. The units or modules described may also be provided in a processor, and the names of the units or modules do not in some cases constitute a limitation of the units or modules themselves.
As another aspect, the present disclosure also provides a computer-readable storage medium, which may be a computer-readable storage medium included in the electronic device or the computer system in the above embodiments; or it may be a separate computer readable storage medium not incorporated into the device. The computer readable storage medium stores one or more programs for use by one or more processors in performing the methods described in the present disclosure.
The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be appreciated by those skilled in the art that the scope of the invention in the present disclosure is not limited to the specific combination of the above-mentioned features, but also encompasses other embodiments in which any combination of the above-mentioned features or their equivalents is possible without departing from the inventive concept. For example, the above features and (but not limited to) the features disclosed in this disclosure having similar functions are replaced with each other to form the technical solution.
Claims (10)
1. A time service method for multi-network device cooperation comprises the following steps:
each network device in the plurality of network devices respectively sends a time service signaling and a positioning signal to the terminal device at the same sending time, wherein the time service signaling carries the sending time;
the terminal equipment determines a plurality of receiving moments of each time service signaling;
the terminal equipment determines a plurality of downlink time delay values based on the positioning signals;
and determining a time service adjusting value based on the plurality of sending moments, the plurality of receiving moments and the plurality of downlink time delay values.
2. A time service method for a network device comprises the following steps:
acquiring a control instruction;
and based on the control instruction, sending a time service signaling and a positioning signal to the terminal equipment at the sending time, wherein the time service signaling carries the information of the sending time.
3. A time service method for terminal equipment comprises the following steps:
receiving time service signaling and positioning signals from a plurality of network devices, and recording the receiving time of receiving the time service signaling, wherein the time service signaling carries the sending time;
determining a plurality of downlink delay values based on the positioning signal;
and determining a time service adjusting value based on the sending time, the receiving times and the downlink time delay values.
4. The method of claim 3, wherein the determining a timing adjustment value based on the plurality of transmission timings, the plurality of reception timings, and the plurality of downlink delay values comprises:
determining whether an abnormal value exists in a plurality of downlink delay values;
and under the condition that the abnormal value exists, eliminating the network equipment corresponding to the abnormal value, and determining the time service adjusting value based on the sending time, the receiving time and the downlink time delay value of other network equipment.
5. The method of claim 3, wherein the determining a timing adjustment value based on the plurality of transmission timings, the plurality of reception timings, and the plurality of downlink delay values comprises:
under the condition that the sending time carried in the time service signaling is different, the time service signaling which is not tampered is determined;
and determining a time service adjusting value based on the sending time, the receiving time and the downlink time delay value of the network equipment corresponding to the time service signaling which is not tampered.
6. A multi-network device collaborative time synchronization system, comprising:
each network device in the plurality of network devices is used for respectively sending a time service signaling and a positioning signal to the terminal device at the same sending time, and the time service signaling carries the sending time;
the terminal equipment is configured to determine a plurality of receiving moments when each time service signaling is received, and determine a plurality of downlink time delay values based on the positioning signals; and determining a time service adjusting value based on the plurality of sending moments, the plurality of receiving moments and the plurality of downlink time delay values.
7. A network device, comprising a memory and a processor; wherein the memory is to store one or more computer instructions, wherein the one or more computer instructions are to be executed by the processor to implement the method steps of claim 2.
8. A terminal device, comprising a memory and a processor; wherein the memory is configured to store one or more computer instructions, wherein the one or more computer instructions are executed by the processor to implement the method steps of claims 3-5.
9. A readable storage medium having stored thereon computer instructions, characterized in that the computer instructions, when executed by a processor, carry out the method steps of any of claims 1-5.
10. A computer program, characterized in that the computer program realizes the method steps of any of claims 1 to 5 when executed by a processor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6061573A (en) * | 1997-02-21 | 2000-05-09 | Motorola, Inc. | Method and apparatus in a radio communication system for synchronizing transmissions while maintaining full user traffic |
| CN106358283A (en) * | 2015-07-17 | 2017-01-25 | 中国移动通信集团公司 | Time synchronizing method, base station, transmission equipment and system |
| CN106488550A (en) * | 2016-12-20 | 2017-03-08 | 华为技术有限公司 | Determine the method and apparatus of terminal and base station clock time deviation |
| CN109474986A (en) * | 2018-12-27 | 2019-03-15 | 西安电子科技大学 | Uplink synchronisation method, device, equipment, storage medium and LTE communication system |
-
2020
- 2020-12-11 CN CN202011460026.6A patent/CN112636858B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6061573A (en) * | 1997-02-21 | 2000-05-09 | Motorola, Inc. | Method and apparatus in a radio communication system for synchronizing transmissions while maintaining full user traffic |
| CN106358283A (en) * | 2015-07-17 | 2017-01-25 | 中国移动通信集团公司 | Time synchronizing method, base station, transmission equipment and system |
| CN106488550A (en) * | 2016-12-20 | 2017-03-08 | 华为技术有限公司 | Determine the method and apparatus of terminal and base station clock time deviation |
| EP3550899A1 (en) * | 2016-12-20 | 2019-10-09 | Huawei Technologies Co., Ltd. | Method and apparatus for determining clock time deviation between terminal and base station |
| CN109474986A (en) * | 2018-12-27 | 2019-03-15 | 西安电子科技大学 | Uplink synchronisation method, device, equipment, storage medium and LTE communication system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023231450A1 (en) * | 2022-05-28 | 2023-12-07 | 华为技术有限公司 | Time synchronization method and communication apparatus |
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