CN110324889A

CN110324889A - Clock synchronizing method, communication device and communication equipment

Info

Publication number: CN110324889A
Application number: CN201810276004.0A
Authority: CN
Inventors: 杨坤; 高峰; 于光炜; 张言飞; 汲桐
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-03-30
Filing date: 2018-03-30
Publication date: 2019-10-11
Anticipated expiration: 2038-03-30
Also published as: CN110324889B

Abstract

The embodiment of the present application provides a kind of clock synchronizing method, communication device and communication equipment, this method comprises: terminal device receives first time information from the network equipment；Downlink signal is received from the network equipment；Uplink signal is sent to the network equipment；The second temporal information is received from the network equipment, second temporal information is for determining that the network equipment receives the time of reception of the uplink signal；According to the sequential relationship of the reference time point, the uplink signal and the downlink signal, the sending instant of the downlink signal is determined；According to the sending instant of the downlink signal and the time of reception, the sending instant of the uplink signal and the time of reception, the clock jitter of the terminal device is determined.The sending instant of synchronization message is calculated by terminal device, the sending instant of synchronization message is carried by following message to terminal device transmission without the network equipment, the running time-frequency resource in wireless network is saved, reduces the network equipment to the complexity of time-frequency scheduling of resource.

Description

Clock synchronizing method, communication device and communication equipment

Technical field

This application involves fields of communication technology, in particular to clock synchronizing method, communication device and communication equipment.

Background technique

In the wireless network, different terminal devices needs to have identical time system, i.e. terminal device needs to keep Clock is synchronous.

In the prior art, a kind of achievable mode that terminal device keeps clock synchronous is: the network equipment is to terminal device Downlink signal is sent, the network equipment records its first moment for sending downlink signal, its reception downlink signal of terminal device records The second moment；Terminal device sends uplink signal, its third for sending the uplink signal of terminal device records to the network equipment Moment, the network equipment record its 4th moment for receiving the uplink signal；When terminal device is according to first moment, second Quarter, third moment, the 4th moment calculate the clock jitter of local clock, and correct local clock according to the clock jitter.

Before calculating clock jitter according to the first moment, the second moment, third moment, the 4th moment due to terminal device, Need to know the first moment and the 4th moment, therefore, the network equipment needs after it sends downlink signal by the first moment pair The temporal information answered is sent to terminal device and the network equipment after receiving uplink signal, needs to correspond to the 4th moment Temporal information be sent to terminal device.When the network equipment corresponds to multiple terminal devices, the network equipment is needed to each net Network equipment sends downlink signal, and after sending the downlink signal, to each network equipment the first moment of transmission it is corresponding when Between information cause the running time-frequency resource expense in wireless network larger so that the network equipment needs to configure a large amount of running time-frequency resource, The network equipment is increased to the complexity of time-frequency scheduling of resource.

Summary of the invention

This application provides a kind of clock synchronizing method, communication device and communication equipment, with save in wireless network when Frequency resource reduces the network equipment to the complexity of time-frequency scheduling of resource.

In a first aspect, this application provides a kind of clock synchronizing methods, this method comprises: terminal device connects from the network equipment First time information is received, which is used to indicate the temporal information of reference time point；Terminal device is set from the network It is standby to receive downlink signal such as synchronization message, and the time of reception of recording synchronism message；Terminal device is sent to the network equipment Uplink signal for example postpones request message, and records the sending instant of delay request message；Optionally, downlink signal and uplink letter Number sequencing that do not fix；After the network equipment receives delay request message, terminal device receives the from the network equipment Two temporal informations, when terminal device can determine that the network equipment receives the reception of delay request message according to the second temporal information It carves；Terminal device further according to reference time point, synchronization message and the sequential relationship for postponing request message, calculates the network equipment Send the sending instant of synchronization message；And according to the sending instant of the synchronization message and the time of reception and delay request message Sending instant and the time of reception, the clock jitter of computing terminal equipment local.The scheme provided through this embodiment, network are set After the standby transmission downlink signal such as synchronization message to terminal device, the network equipment is not necessarily to follow message to terminal device transmission, i.e., The network equipment is not necessarily to carry the sending instant of synchronization message by following message to terminal device transmission, shortens single clock Time needed for synchronous process, terminal device can for example postpone request according to uplink signal such as synchronization message and downlink signal and disappear The reference time point that the sequential relationship and terminal device of breath are received from the network equipment, determines the sending instant of synchronization message. When the network equipment corresponds to multiple terminal devices, the network equipment is no longer needed to after sending synchronization message to each terminal device to every A terminal device transmission follows message, so that the network equipment is not necessarily to each follow message arrangement running time-frequency resource, to save Running time-frequency resource in wireless network reduces the network equipment to the complexity of time-frequency scheduling of resource.

In a kind of possible design, the sequential relationship of the uplink signal and the downlink signal includes: the downlink Offset, uplink signal offset relative to reference time point of the signal relative to reference time point.

In a kind of possible design, the terminal device is according to the reference time point, the uplink signal and described The sequential relationship of downlink signal determines the sending instant of the downlink signal, comprising:

The terminal device according to the reference time point, offset of the downlink signal relative to reference time point, Determine the sending instant of the downlink signal.

In a kind of possible design, the downlink signal includes: relative to the offset of reference time point

Wireless frame shifting amount of the corresponding radio frame boundaries of the downlink signal relative to the reference time；Or

Sub-frame offset of the corresponding sub-frame boundary of the downlink signal relative to the reference time point；Or

Slot offset amount of the corresponding boundary of time slot of the downlink signal relative to the reference time point.

In a kind of possible design, second temporal information includes that the network equipment receives the uplink signal The time of reception.

In a kind of possible design, second temporal information includes that the network equipment starts to receive the uplink letter Number initial time and the network equipment receive the uplink signal the time of reception time difference；

The method also includes:

The terminal device according to the reference time point, the uplink signal relative to reference time point offset and The time difference determines the time of reception when network equipment receives the uplink signal.

In a kind of possible design, the uplink signal includes: relative to the offset of reference time point

Wireless frame shifting amount of the corresponding radio frame boundaries of the uplink signal relative to the reference time point；Or

Sub-frame offset of the corresponding sub-frame boundary of the uplink signal relative to the reference time point；Or

Slot offset amount of the corresponding boundary of time slot of the uplink signal relative to the reference time point.

In a kind of possible design, the sequential relationship of the uplink signal and the downlink signal includes: the uplink Offset, the uplink of the sending cycle of signal and the downlink signal, the uplink signal relative to the downlink signal The initial position of signal or the downlink signal relative to the reference time point.

Starting of the terminal device according to the reference time point, the downlink signal relative to the reference time point The sending cycle of position and the downlink signal determines the sending instant of the downlink signal；Or

Starting of the terminal device according to the reference time point, the uplink signal relative to the reference time point Position, the uplink signal offset relative to the downlink signal of sending cycle and the uplink signal, determine institute State the sending instant of downlink signal.

In a kind of possible design, the terminal device is received from the network equipment before downlink signal, further includes:

The terminal device from the network equipment receive configuration information, the configuration information include the uplink signal and The sequential relationship of the downlink signal.

In a kind of possible design, the configuration information further include: the sending cycle of the first time information.

In a kind of possible design, the configuration information further include: the current sending cycle of the first time information The temporal information of interior corresponding reference time point.

Second aspect, the application provide a kind of clock synchronizing method, comprising:

The network equipment sends first time information to terminal device, and the first time information is used to indicate reference time point Temporal information；

The network equipment sends downlink signal to the terminal device；

The network equipment receives uplink signal from the terminal device；

The network equipment sends the second temporal information to the terminal device, and second temporal information is for determining institute State the time of reception that the network equipment receives the uplink signal.

In a kind of possible design, the network equipment is sent to terminal device after first time information, further includes:

The network equipment sends configuration information to terminal device, and the configuration information includes the uplink signal and described The sequential relationship of downlink signal.

In a kind of possible design, second temporal information includes that the network equipment receives the uplink signal The time of reception；Or

Second temporal information include the network equipment start to receive the initial time of the uplink signal with it is described The network equipment receives the time difference of the time of reception of the uplink signal.

The third aspect, the application provide a kind of clock synchronizing method, comprising:

The network equipment sends downlink signal to terminal device；

The network equipment receives uplink signal from the terminal device；

For the network equipment from the terminal device receiving time information, the temporal information includes the downlink signal The sending instant of the time of reception or the uplink signal；

The network equipment is according to the sequential relationship of the uplink signal and the downlink signal, the hair of the terminal device Pre-set time is sent, determines the incidence relation of the time of reception of the downlink signal and the sending instant of the uplink signal；

The network equipment is according to the association of the time of reception of the downlink signal and the sending instant of the uplink signal Relationship, the sending instant of the time of reception of the downlink signal or the uplink signal, the sending instant of the downlink signal, institute The time of reception for stating uplink signal determines the clock jitter of the terminal device；

The network equipment sends the clock jitter of the terminal device to the terminal device.

In a kind of possible design, the sequential relationship of the uplink signal and the downlink signal includes: the uplink The corresponding radio frame number of the time-domain resource of signal, subframe numbers or timeslot number, the time-domain resource of the downlink signal are corresponding wireless Frame number, subframe numbers or timeslot number.

In a kind of possible design, the sequential relationship of the uplink signal and the downlink signal includes: the uplink Offset, the uplink of the sending cycle of signal and the downlink signal, the uplink signal relative to the downlink signal The initial position of signal or the downlink signal.

In a kind of possible design, the network equipment is sent to terminal device before downlink signal, further includes:

The network equipment to the terminal device send configuration information, the configuration information include the uplink signal and The sequential relationship of the downlink signal.

Fourth aspect, the application provide a kind of clock synchronizing method, comprising:

Terminal device receives downlink signal from the network equipment；

The terminal device sends uplink signal to the network equipment；

For the terminal device to the network equipment transmission time information, the temporal information includes the downlink signal The sending instant of the time of reception or the uplink signal；

The terminal device receives the clock jitter of the terminal device from the network equipment.

The terminal device receives configuration information from the network equipment, and the configuration information includes the uplink signal and described The sequential relationship of downlink signal.

5th aspect, the application provide a kind of communication device, comprising:

Receiving module, for receiving first time information from the network equipment, the first time information is used to indicate reference The temporal information at time point；Downlink signal is received from the network equipment；

Sending module, for sending uplink signal to the network equipment；

The receiving module is also used to receive the second temporal information from the network equipment, and second temporal information is used for Determine that the network equipment receives the time of reception of the uplink signal；

Determining module, for the sequential relationship according to the reference time point, the uplink signal and the downlink signal, Determine the sending instant of the downlink signal；According to the sending instant of the downlink signal, the downlink signal the time of reception, The time of reception of the sending instant of the uplink signal, the uplink signal determines the clock jitter of the communication device.

In a kind of possible design, the determining module is according to the reference time point, the uplink signal and described The sequential relationship of downlink signal is specifically used for when determining the sending instant of the downlink signal:

According to the reference time point, offset of the downlink signal relative to reference time point, the downlink is determined The sending instant of signal.

The determining module is also used to: according to the reference time point, the uplink signal relative to reference time point Offset and the time difference, determine the time of reception when network equipment receives the uplink signal.

Initial position, Yi Jisuo according to the reference time point, the downlink signal relative to the reference time point The sending cycle for stating downlink signal determines the sending instant of the downlink signal；Or

According to the reference time point, the uplink signal relative to the reference time point initial position, it is described on The offset of the sending cycle of row signal and the uplink signal relative to the downlink signal, determines the downlink signal Sending instant.

In a kind of possible design, the receiving module is also used to: configuration information is received from the network equipment, it is described Configuration information includes the sequential relationship of the uplink signal and the downlink signal.

6th aspect, the application provide a kind of communication device, comprising:

Sending module, for sending first time information to terminal device, the first time information is used to indicate reference The temporal information at time point；Downlink signal is sent to the terminal device；

Receiving module, for receiving uplink signal from the terminal device；

The sending module is also used to: Xiang Suoshu terminal device sends the second temporal information, and second temporal information is used In determining that the communication device receives the time of reception of the uplink signal.

In a kind of possible design, the sending module is also used to:

Send configuration information to terminal device, the configuration information include the uplink signal and the downlink signal when Order relation.

7th aspect, the application provide a kind of communication device, comprising:

Sending module, for sending downlink signal to terminal device；

Receiving module, for receiving uplink signal from the terminal device；From the terminal device receiving time information, institute State the sending instant of the time of reception or the uplink signal that temporal information includes the downlink signal；

Determining module, for according to the sequential relationship of the uplink signal and the downlink signal, the terminal device Pre-set time is sent, determines the incidence relation of the time of reception of the downlink signal and the sending instant of the uplink signal；Root According to the reception of the incidence relation, the downlink signal of the sending instant of the time of reception and uplink signal of the downlink signal The sending instant of moment or the uplink signal, the sending instant of the downlink signal, the uplink signal the time of reception, really The clock jitter of the fixed terminal device；

The sending module is also used to: Xiang Suoshu terminal device sends the clock jitter of the terminal device.

In a kind of possible design, the sending module is also used to:

Configuration information is sent to the terminal device, the configuration information includes the uplink signal and the downlink signal Sequential relationship.

Eighth aspect, the application provide a kind of communication device, comprising:

Receiving module, for receiving downlink signal from the network equipment；

Sending module, for sending uplink signal to the network equipment；To the network equipment transmission time information, institute State the sending instant of the time of reception or the uplink signal that temporal information includes the downlink signal；

The receiving module is also used to: the clock jitter of the communication device is received from the network equipment.

In a kind of possible design, the receiving module is also used to:

Receive configuration information from the network equipment, the configuration information include the uplink signal and the downlink signal when Order relation.

9th aspect, the application provide a kind of communication equipment, comprising:

Interface & processor, the interface and processor coupling；

The processor is for executing clock synchronizing method described in first aspect and fourth aspect.

In a kind of possible design, the communication equipment in the 9th aspect can be terminal device, or chip；It connects Mouth can be integral to the processor on same chip, can also be separately positioned on different chips.

Tenth aspect, the application provide a kind of communication equipment, comprising:

Interface & processor, the interface and processor coupling；

The processor is for executing clock synchronizing method described in second aspect and the third aspect.

In a kind of possible design, the communication equipment in the tenth aspect can be the network equipment, or chip；It connects Mouth can be integral to the processor on same chip, can also be separately positioned on different chips.

Tenth on the one hand, and the application provides a kind of computer readable storage medium, deposits in the computer readable storage medium Computer program is contained, when run on a computer, so that computer is executed as described in first aspect and fourth aspect Method.

12nd aspect, the application provide a kind of computer readable storage medium, deposit in the computer readable storage medium Computer program is contained, when run on a computer, so that computer is executed as described in second aspect and the third aspect Method.

13rd aspect, the application provides a kind of computer program, when the computer program is computer-executed, uses The method described in execution first aspect and fourth aspect.

In a kind of possible design, the program in the 13rd aspect can be stored in whole or in part seals with processor On the storage medium being fitted together, some or all of it can also be stored on the memory not being packaged together with processor.

Fourteenth aspect, the application provide a kind of computer program, when the computer program is computer-executed, use The method described in execution second aspect and the third aspect.

In a kind of possible design, the program in fourteenth aspect can be stored in whole or in part seals with processor On the storage medium being fitted together, some or all of it can also be stored on the memory not being packaged together with processor.

15th aspect, the application provide a kind of communication equipment, comprising:

Memory and processor, the memory and processor coupling；

The processor is used to execute the method as described in first aspect and fourth aspect.

In a kind of possible design, the communication equipment in the 15th aspect can be terminal device, or chip； Memory can be integral to the processor on same chip, can also be separately positioned on different chips.

16th aspect, the application provide a kind of communication equipment, comprising:

Memory and processor, the memory and processor coupling；

The processor is used to execute the method as described in second aspect and the third aspect.

In a kind of possible design, the communication equipment in the 16th aspect can be the network equipment, or chip； Memory can be integral to the processor on same chip, can also be separately positioned on different chips.

17th aspect, the application provide a kind of processor, which includes:

At least one circuit, for receiving first time information from the network equipment, the first time information is used to indicate The temporal information of reference time point；

At least one circuit, for receiving downlink signal from the network equipment；

At least one circuit, for sending uplink signal to the network equipment；

At least one circuit, for receiving the second temporal information from the network equipment, second temporal information is used for Determine that the network equipment receives the time of reception of the uplink signal；

At least one circuit, for the timing according to the reference time point, the uplink signal and the downlink signal Relationship determines the sending instant of the downlink signal；

At least one circuit, for according to the sending instant of the downlink signal, the time of reception of the downlink signal, institute The sending instant of uplink signal, the time of reception of the uplink signal are stated, determines the clock jitter of the terminal device.

In a kind of possible design, the processor in the 17th aspect can be chip.

18th aspect, the application provide a kind of processor, which includes:

At least one circuit, for sending first time information to terminal device, the first time information is used to indicate The temporal information of reference time point；

At least one circuit, for sending downlink signal to the terminal device；

At least one circuit, for receiving uplink signal from the terminal device；

At least one circuit, for sending the second temporal information to the terminal device, second temporal information is used for Determine that the network equipment receives the time of reception of the uplink signal.

In a kind of possible design, the processor in the 18th aspect can be chip.

19th aspect, the application provide a kind of processor, which includes:

At least one circuit, for sending downlink signal to terminal device；

At least one circuit, for receiving uplink signal from the terminal device；

At least one circuit, for from the terminal device receiving time information, the temporal information to include the downlink The sending instant of the time of reception of signal or the uplink signal；

At least one circuit, for being set according to the sequential relationship of the uplink signal and the downlink signal, the terminal Standby transmission pre-set time determines that the association of the time of reception of the downlink signal and the sending instant of the uplink signal is closed System；

At least one circuit, for according to the sending instant of time of reception and uplink signal of the downlink signal Incidence relation, the sending instant of the time of reception of the downlink signal or the uplink signal, the downlink signal transmission when It carves, the time of reception of the uplink signal, determines the clock jitter of the terminal device；

At least one circuit, for sending the clock jitter of the terminal device to the terminal device.

In a kind of possible design, the processor in the 19th aspect can be chip.

20th aspect, the application provide a kind of processor, which includes:

At least one circuit, for sending uplink signal to the network equipment；

At least one circuit, for the network equipment transmission time information, the temporal information to include the downlink The sending instant of the time of reception of signal or the uplink signal；

At least one circuit, for receiving the clock jitter of the terminal device from the network equipment.

In a kind of possible design, the processor in the 20th aspect can be chip.

As it can be seen that in the above various aspects, after sending downlink signal such as synchronization message to terminal device by the network equipment, The network equipment is not necessarily to follow message to terminal device transmission, i.e., the network equipment be not necessarily to by terminal device transmission follow message come The sending instant for carrying synchronization message, the time needed for shortening the synchronous process of single clock, terminal device can be believed according to uplink Number such as synchronization message and downlink signal for example postpone the sequential relationship of request message and terminal device is received from the network equipment Reference time point, determine the sending instant of synchronization message.When the network equipment corresponds to multiple terminal devices, the network equipment It no longer needs to send to each terminal device after sending synchronization message to each terminal device and follows message, so that the network equipment is not necessarily to Message arrangement running time-frequency resource is followed to be each, to save the running time-frequency resource in wireless network, reduces network equipment clock synchronization The complexity of frequency scheduling of resource.

Detailed description of the invention

Fig. 1 is a kind of application scenarios schematic diagram provided by the embodiments of the present application；

Fig. 2 is a kind of signaling diagram of clock synchronizing method provided by the present application；

Fig. 3 is the signaling diagram of another clock synchronizing method provided by the present application；

Fig. 4 is a kind of structural schematic diagram of radio frames provided by the present application；

Fig. 5 is the structural schematic diagram of another radio frames provided by the present application；

Fig. 6 is the structural schematic diagram of another radio frames provided by the present application；

Fig. 7 is the signaling diagram of another clock synchronizing method provided by the present application；

Fig. 8 is the signaling diagram of another clock synchronizing method provided by the present application；

Fig. 9 is the signaling diagram of another clock synchronizing method provided by the present application；

Figure 10 is the signaling diagram of another clock synchronizing method provided by the present application；

Figure 11 is the signaling diagram of another clock synchronizing method provided by the present application；

Figure 12 is a kind of structural schematic diagram of communication device provided by the embodiments of the present application；

Figure 13 is the structural schematic diagram of another communication device provided by the embodiments of the present application；

Figure 14 is the structural schematic diagram of another communication device provided by the embodiments of the present application；

Figure 15 is the structural schematic diagram of another communication device provided by the embodiments of the present application；

Figure 16 is a kind of structural schematic diagram of terminal device provided by the embodiments of the present application；

Figure 17 is a kind of structural schematic diagram of the network equipment provided by the embodiments of the present application；

Figure 18 is the structural schematic diagram of another network equipment provided by the embodiments of the present application.

Specific embodiment

The term that presently filed embodiment part uses is only used for explaining the specific embodiment of the application, rather than It is intended to limit the application.

The embodiment of the present application can be applied to various types of communication systems.Fig. 1 is that one kind provided by the embodiments of the present application is answered Use schematic diagram of a scenario.Communication system as shown in Figure 1 mainly includes the network equipment 11 and terminal device 12.

Wherein, 1) network equipment 11 can be network side equipment, for example, Wireless Fidelity (Wireless-Fidelity, WIFI the base station of access point AP, next generation communication) can also be relay station, access such as the gNB of 5G or small station, micro- station, TRP Point, mobile unit, wearable device etc..In the present embodiment, the base station in the communication system of different communication standard is different.In order to For the sake of difference, the base station of 4G communication system is known as LTE eNB, the base station of 5G communication system is known as NR gNB, has both supported that 4G is logical Letter system supports the base station of 5G communication system to be known as eLTE eNB again, these titles do not have limitation only for facilitating difference Meaning.

2) terminal device 12 is also referred to as user equipment (User Equipment, UE), is that one kind provides a user voice And/or the equipment of data connectivity, for example, handheld device, mobile unit etc. with wireless connecting function.Common terminal Equipment for example, mobile phone, tablet computer, laptop, palm PC, mobile internet device (mobile internet Device, MID), wearable device, such as smartwatch, Intelligent bracelet, pedometer etc..

3) " multiple " refer to two or more, and other quantifiers are similar therewith."and/or" describes the pass of affiliated partner Connection relationship indicates may exist three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A and B, individually There are these three situations of B.Character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".

It should be noted that the number amount and type of terminal device 12 included in communication system shown in FIG. 1 are only A kind of distance, the embodiment of the present application disease are not limited to this.For example, it is also possible to include more being communicated with the network equipment 11 Terminal device 12 is concise description, does not describe one by one in the accompanying drawings.In addition, in communication system as shown in Figure 1, although showing The network equipment 11 and terminal device 12 are gone out, but the communication system can be not limited to include the network equipment 11 and terminal device 12, such as can also include equipment of the core network or the equipment etc. for carrying virtualization network function, these are for this field skill It is for art personnel it will be apparent that will not repeat them here.

The embodiment of the present application can be applied to wireless cellular communication network system, and wireless cellular communication network system can be regarded as Wireless communication system based on cellular network architecture.For example, global system for mobile telecommunications (Global System of Mobile Communication, GSM) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, long term evolution (Long Term Evolution, LTE), 5G newly eat dishes without rice or wine (New Radio, NR) communication system Deng.In addition, the embodiment of the present application apply also for the future may appear other systems, such as follow-on wifi network, 5G Car networking etc..

Under normal conditions, terminal device needs and absolute time such as Coordinated Universal Time(UTC) (Coordinated Universal Time, UTC), the holdings such as Global Navigation Satellite System (Global Navigation Satellite System, GNSS) it is same Step.For example, the terminal device in factory needs to reach time synchronization according to identical time reference system, complete for example to add with cooperation The tasks such as work, measurement.

In the wireless network, different terminal devices is also required to have identical time system, joins according to the identical time Examine is to carry out clock to synchronize.It realizes that a kind of synchronous method of clock is process as shown in Figure 2 at present, is related to net in the process Communication between network equipment and terminal device optionally, should in Wireless Fidelity (Wireless-Fidelity, WIFI) network The network equipment specifically can be wireless access points (Access Point, AP).In mobile data network, the network equipment It specifically can be base station.In addition, the network equipment correspond to master clock node (Master Clock), terminal device correspond to from when Clock node (Slave Clock).Master clock node has external clock module such as atomic clock, global positioning system (Global Positioning System, GPS) etc., alternatively, master clock node can be calibrated with external clock, to obtain high-precision Absolute time.It is carrying out calculating the local clock from clock node in communication process with master clock node from clock node Relative to the clock jitter of master clock node, and the local clock from clock node is corrected according to the clock jitter, so that from The local clock of clock node is synchronous with the holding of the clock of master clock node.It is set below using base station as master clock node, terminal It is standby to be used as clock node, clock synchronizing method shown in Fig. 2 is discussed in detail, this method specifically includes following several steps It is rapid:

Step S21, master clock node sends a notification message to from clock node.

Specifically, master clock node can be the optimal clock source selected from network, master clock section is selected After point, the master clock node can to sending a notification message from clock node, with notice from clock node its for main clock node.

Step S22, master clock node sends synchronization message (Sync Message) to from clock node, master clock node root Its sending instant t1 for sending synchronization message is recorded according to master clock；When receiving the synchronization message from clock node, according to from when The time of reception t2 of clock recording synchronism message.

Step S23, master clock node follows message (Follow_up Message) to from clock node transmission, follows and disappears The timestamp information t1 i.e. sending instant of synchronization message is carried in breath.

Step S24, delay request message (Delay_Req Message) is sent from clock node to master clock node, from Clock node is according to the sending instant t3 from clock log delay request message；Master clock node receives the delay request message When, the time of reception t4 of the delay request message is recorded according to master clock.

Step S25, master clock node sends delay response message (Delay_Response to from clock node Message), the time of reception that timestamp information t4 postpones request message is carried in the delay response message.

Step S26, clock jitter is calculated from clock node, corrects the timing of local clock.

Specifically, being asked from clock node according to the sending instant t1 of synchronization message, the time of reception t2 of synchronization message, delay Ask the sending instant t3 of message and the time of reception t4 of delay request message, calculate from the local clock of clock node relative to The clock jitter of master clock node, the clock jitter are denoted as Offset, and the relationship between Offset, t1, t2, t3 and t4 can lead to Cross following formula (1) expression:

In addition, from clock node signal can also be calculated from master clock node to from clock node by t1, t2, t3 and t4 Transmission delay Delay, Delay the following formula of calculation formula (2) indicate:

After clock jitter is calculated from clock node, the sheet from clock node is further corrected according to the clock jitter The timing of ground clock, so as to high-precise synchronization be kept from the local clock of clock node and the clock of master clock node, to make High-precise synchronization is kept from the local clock and absolute time of clock node.

As shown in Fig. 2, step S22 to step S26 can be denoted as the synchronous process of a clock, in the synchronous process of a clock In, it is once to follow the timestamp information t1 carried in message that base station, which need to send timestamp information twice to terminal device, another Secondary is the timestamp information t4 for postponing to carry in request message.Base station, which needs to send after sending synchronization message, follows message, If base station corresponds to multiple terminal devices, base station is sent to each terminal device after synchronization message, it is also necessary to each end End equipment transmission follows message, and therefore, base station needs to synchronization message, the transmission of message is followed to configure running time-frequency resource, and clock synchronization Frequency resource is scheduled, and when the corresponding terminal device in base station is more, the running time-frequency resource expense that will lead in network is larger, and Base station is increased to the complexity of time-frequency scheduling of resource.In order to solve this problem, it is same to provide a kind of clock for the embodiment of the present application One step process is described in detail clock synchronizing method below with reference to embodiment.

Fig. 3 is a kind of signaling diagram of clock synchronizing method provided by the present application.In the present embodiment, the network equipment can be Base station, in 4G communication system, base station eNB；In 5G communication system, base station gNB, base station described in the present embodiment is not It is limited to eNB and gNB.In addition, the network equipment can also be the access point AP in WIFI network.The network equipment has external clock mould Block can obtain accurate absolute time, and can provide absolute time information, network for the terminal device in its coverage area Equipment can send configuration information and data information for terminal device.Terminal device specifically can be UE, when terminal device has Clock module can be linked into the coverage area of the network equipment, can also receive the configuration information and data of network equipment transmission Information can also correct the timing of local clock to network equipment reported data according to clock jitter.The present embodiment is with base station and end It is schematically illustrated for communication process between end equipment, wherein base station corresponds to master clock node, and terminal device is corresponding In from clock node.As shown in figure 3, clock synchronizing method described in the present embodiment includes the following steps:

Step S31, base station sends first time information to terminal device, which is used to indicate the reference time The temporal information of point.

Specifically, base station records a timestamp, such as t0, t0 can be the current time of the clock log of base station, It can be the historical juncture of the clock log of base station, base station is using t0 as reference time point.As shown in figure 3, t0 is determined in base station Moment, and a certain moment after the t0 moment sends first time information to terminal device, the first time information is for referring to Show the temporal information of reference time point t0.

In the present embodiment, base station aperiodic can send first time information to terminal device, can also be periodical To terminal device send first time information.

If base station is aperiodic to send first time information, the corresponding reference of first time information to terminal device Time point, such as t0 can correspond to the beginning boundary of some radio frames.

If base station periodically sends first time information to terminal device, for example, base station is set with cycle T 0 to terminal Preparation send first time information, then the reference time point that base station is sent within each period corresponds to an initial line an of radio frames A kind of representation on boundary, the reference time point that base station is sent within each period is: it is SFN that reference time point, which corresponds to frame number, Radio frames beginning boundary, and SFN mod 16=0.By taking the time span of radio frames is 10ms as an example, then T0=160ms, The every 160ms in base station sends primary first time information, i.e. base station sends a reference time point every 160ms.As shown in figure 4, When base station sends reference time point to terminal device with cycle T 0, optionally, base station is sent out within some period to terminal device The reference time point sent is t0, beginning boundary of the t0 corresponding to the radio frames of frame number SFN=16；Base station is sent within the next period Reference time point be t0+T0, t0+T0 corresponding to frame number SFN=32 radio frames beginning boundary；Base station is in next one week The reference time point sent in phase is t0+2*T0, beginning boundary of the t0+2*T0 corresponding to the radio frames of frame number SFN=48；Successively Analogize.

Optionally, base station can send reference time point to terminal device by system message or system signaling.Wherein, System message can be Master Information Block (Master Information Block, MIB) message, remaining minimum system message (Remaining Minimum System Information, RMSI), system information block (System Information Block, SIB) one of message or several combinations.System signaling can be wireless heterogeneous networks (Radio Resource Control, RRC) signaling, Downlink Control Information (Downlink Control Information, DCI) signaling, Or in media access control (Media Access Control, MAC) control element (Control Element, CE) signaling One or more of combinations.

Before reference time point is sent, when base station can send reference to terminal device by system message or system signaling Between the configuration information put.The configuration information includes reference time point sending cycle, and initial reference time point is corresponding wireless Frame number, subframe numbers and timeslot number.System message can be Master Information Block (Master Information Block, MIB) message, Remaining minimum system message (Remaining Minimum System Information, RMSI), system information block (System Information Block, SIB) one of message or several combinations.System signaling can be wireless heterogeneous networks (Radio Resource Control, RRC) signaling, Downlink Control Information (Downlink Control Information, DCI) signaling or media access control (Media Access Control, MAC) control element (Control Element, CE) The combination of one or more of signaling.

Specifically, base station can send reference time point, example to terminal device by way of broadcast, multicast or unicast Such as, base station can be according to cycle T 0 to end-point device broadcast reference time point, alternatively, base station is aperiodic wide to terminal device It broadcasts, multicast or unicast reference time point.

Step S32, base station sends synchronization message to terminal device.

In the present embodiment, the synchronization message that base station is sent to terminal device is downlink signal.When terminal device receives When the synchronization message, terminal device records the time of reception t2 of the synchronization message according to the local clock of terminal device.Due to nothing Line signal can generate delay in transmission process, so base station sends the sending instant t1 of synchronization message and terminal device is received and is somebody's turn to do Time of reception t2 of synchronization message may be different.

Optionally, the synchronization message that base station is sent to terminal device can be multiplexed newly eat dishes without rice or wine (New Radio, NR) system or Existing signal in long term evolution (Long Term Evolution, LTE), for example, time-frequency track reference signal (TRS/CSI- RS for time and frequency tracking), Phase Tracking reference signal (Phase Tracing Reference Signal, PTRS), demodulated reference signal (DeModulation Reference Signal, DMRS), primary synchronization signal (Primary Synchronization Sigal, PSS), secondary synchronization signal (Secondary Synchronization Signal, SSS), detection reference signal (Sounding Reference Signal, SRS), random access channel (Random Access Channel, RACH) one of or several combinations.

Step S33, terminal device sends delay request message to base station.

In the present embodiment, the delay request message that terminal device is sent to base station is uplink signal.When terminal device is sent out When sending delay request message, the sending instant t3 of delay request message is recorded according to the local clock of terminal device.When base station connects When receiving the delay request message, the time of reception t4 of the delay request message is recorded according to the local clock of base station.Due to nothing Line signal can generate delay in transmission process, so terminal device sends the sending instant t3 of delay request message and base station connects Time of reception t4 for receiving the delay request message may be different.

Optionally, the time of reception t4 of the sending instant t3 and the delay request message that postpone request message correspond to identical The delay request message where time slot, subframe or radio frames feature locations, for example, delay request message transmission when The time of reception t4 for carving t3 and the delay request message both corresponds to time slot where the delay request message, subframe or wireless The beginning boundary of frame；Alternatively, the sending instant t3 of delay request message and the time of reception t4 of the delay request message are corresponding In the end boundary of time slot, subframe or radio frames where the delay request message.

Optionally, the delay request message that terminal device is sent to base station can be multiplexed existing letter in NR or LTE system Number, for example, one of PTRS, DMRS, PSS, SSS, SRS, RACH or several combinations.

In the present embodiment, the sequencing of step S32 and step S33 are not limited, either base station is first set to terminal Preparation send synchronization message, sends after terminal device to base station and postpones request message, is also possible to terminal device and first sends to base station Postpone request message, send synchronization message to terminal device behind base station, i.e., do not limit synchronization message and postpones the elder generation of request message Sequence afterwards, for different terminal devices, the sequencing of synchronization message and delay request message can be different.

In addition, synchronization message and delay request message can be periodic signal, it is also possible to nonperiodic signal, i.e. base station can Periodically to send synchronization message to terminal device, terminal device periodically sends delay request message to base station；Base station Acyclic synchronization message can also be sent to terminal device, acyclic send to base station of terminal device postpones to request to disappear Breath.

When synchronization message and delay request message are periodic signals, a kind of timing of synchronization message and delay request message Relationship is: synchronization message is SFN in frame number, and is sent in the time slot 0 of the radio frames of SFN mod 8=0, and delay request message exists Frame number is SFN, and sends in the time slot 0 of the radio frames of SFN mod 8=1；By taking the time span of radio frames is 10ms as an example, then Synchronization message and the sending cycle of delay request message are 80ms, adjacent synchronization message and delay request message interval 10ms.

When synchronization message and delay request message be nonperiodic signal when, synchronization message and delay request message it is a kind of when Order relation can be as shown in figure 5, base station sends synchronization message, terminal device in the time slot 0 of the radio frames of frame number SFN=16 Delay request message is sent in the time slot 0 of the radio frames of frame number SFN=17.

Step S34, base station sends the second temporal information to terminal device, which includes t4 or Δ t.

Base station sends the second temporal information to terminal device, which may include postponing connecing for request message Time receiving carves t4, alternatively, second temporal information may include that base station starts to receive initial time and the base station of delay request message The time difference Δ t of time of reception when being an actually-received the delay request message.As shown in fig. 6, base station is frame number SFN=16's Synchronization message is sent in the time slot 0 of radio frames, correspondingly, terminal device receives in the time slot 0 of the radio frames of frame number SFN=16 Synchronization message；Terminal device sends delay request message in the time slot 0 of the radio frames of frame number SFN=17, correspondingly, base station exists Delay request message is received in the time slot 0 of the radio frames of frame number SFN=17.Specifically, radio frames of the base station from frame number SFN=17 Beginning boundary S1 start receive delay request message, but base station be an actually-received delay request message at the time of be the t4 moment, Time difference between S1 and t4 is Δ t.

As shown in fig. 6, the reference time point t0 that base station is sent to terminal device corresponds to the radio frames of frame number SFN=16 Beginning boundary.Time slot 0 of the time of reception t4 of delay request message corresponding to the radio frames of frame number SFN=17.Base station calculates Δ t It can there are several types of feasible implementations:

One kind is feasible to be achieved in that: offset of the base station according to the corresponding boundary of time slot of t4 relative to reference time point t0 Amount omits offset of the t4 relative to time slot granularity, subframe granularity, radio frames granularity in the offset of t0, obtains being less than time slot The time data Δ t of length.Such as shown in Fig. 6, the corresponding boundary of time slot of t4 is the time slot 0 of the radio frames of frame number SFN=17 Beginning boundary S1, the time difference between S1 and t4 are Δ t.

Another kind is feasible to be achieved in that: base station is according to the corresponding sub-frame boundary of t4 relative to the inclined of reference time point t0 Shifting amount, omit t4 relative to subframe granularity, the offset of radio frames granularity in the offset of t0, obtain less than subframe lengths when Between data Δ t.

Another is feasible to be achieved in that: base station is according to the corresponding radio frame boundaries of t4 relative to reference time point t0's Offset omits offset of the t4 relative to radio frames granularity in the offset of t0, obtains the time number less than wireless frame length According to Δ t.

Optionally, base station is after the delay request message for being successfully received terminal device transmission, when can be corresponding by t4 Between stamp completely be sent to terminal device, can also will pass through the calculated Δ t transmission of any of the above-described kind of feasible implementation To terminal device.Base station sends a kind of of t4 or Δ t to terminal device and may be achieved in that: base station is being successfully received delay It is sent out by system signaling to terminal device after several radio frames, several subframes or several time slots after request message T4 or Δ t is sent, system signaling specifically can be wireless heterogeneous networks (Radio Resource Control, RRC) signaling, downlink Control information (Downlink Control Information, DCI) signaling or media access control (Media Access Control, MAC) one or more of control element (Control Element, CE) signaling combination.In addition, base station to The t4 or Δ t that terminal device is sent may include following several possible representations:

A kind of possible representation is: directly passing through the accuracy representing t4 or Δ t of nanosecond ns.

Alternatively possible representation is: indicating t4 or Δ t by the sampling period.For different communication systems, adopt The length in sample period may be different, for example, in LTE system, sampling period Ts=1 ÷ 30.82us ≈ 32ns.In NR system In, 30.82 ÷ 64us ≈ 0.5ns of sampling period Tc=1 ÷.The actual samples period may under different system bandwidths and frequency point in NR Difference, the time granularity indicated under different situations may be different.

Step S35, terminal device determines the sending instant of synchronization message.

Specifically, terminal device determines same according to reference time point, synchronization message and the sequential relationship for postponing request message Walk the sending instant of message.Wherein, synchronization message and the sequential relationship of delay request message can specifically refer to synchronization message and prolong Slow request message is respectively relative to the offset of reference time point, can also refer to synchronization message and postpone between request message when Between interval be synchronization message relative to delay request message offset.Terminal device can be previously stored with synchronization message and prolong The sequential relationship of slow request message, can also be obtained for example from base station from network side synchronization message and delay request message when Order relation.It includes following several feasible that terminal device, which obtains synchronization message from base station and postpones the sequential relationship of request message, Implementation:

It is a kind of feasible to be achieved in that: as shown in figure 3, base station is when sending first time information to terminal device, together When to terminal device send synchronization message and postpone request message sequential relationship.

It is another feasible to be achieved in that: as shown in figure 3, base station is when sending synchronization message to terminal device, simultaneously Synchronization message is sent to terminal device and postpones the sequential relationship of request message.

Another is feasible to be achieved in that: as shown in fig. 7, the difference of Fig. 7 and Fig. 3 is: base station is to terminal device Before sending synchronization message, base station sends configuration information to terminal device, which includes synchronization message and delay request The sequential relationship of message.In addition, the configuration information can also include synchronization message and the running time-frequency resource for postponing request message.It is optional , base station can pass through (New Radio, NR) system or long term evolution (Long Term Evolution, the LTE) system of newly eating dishes without rice or wine Signaling such as Downlink Control Information (Downlink Control Information, DCI) signaling, media access control (Media Access Control, MAC) control element (Control Element, CE) signaling, wireless heterogeneous networks (Radio Resource Control, RRC) combination of one or more of signaling sends configuration information to terminal device.In addition, this is matched Confidence breath can also include sending cycle T0, Yi Jican of the corresponding running time-frequency resource of reference time point such as t0, reference time point Examine the meaning etc. at time point.

Specifically, when synchronization message and delay request message are nonperiodic signal, synchronization message and delay request message Sequential relationship may include synchronization message relative to reference time point offset and delay request message relative to reference when Between the offset put.In this case, terminal device is according to reference time point, synchronization message and the timing for postponing request message Relationship determines that a kind of achievable mode of the sending instant of synchronization message is: terminal device is according to reference time point and synchronizes Offset of the message relative to reference time point, determines the sending instant of synchronization message.

In the present embodiment, synchronization message specifically may is that synchronization message is corresponding relative to the offset of reference time point Sub-frame offset of the sub-frame boundary relative to reference time point, be also possible to the corresponding boundary of time slot of synchronization message relative to ginseng The slot offset amount for examining time point can also be nothing of the frame boundaries of the corresponding radio frames of synchronization message relative to reference time point Line frame shifting amount.Delay request message specifically may is that delay request message is corresponding relative to the offset of reference time point Sub-frame offset of the sub-frame boundary relative to reference time point, be also possible to postpone the corresponding boundary of time slot of request message relative to The slot offset amount of reference time point can also be the frame boundaries of the corresponding radio frames of delay request message relative to the reference time The wireless frame shifting amount of point.

For the running time-frequency resource structure Numerology of different NR or LTE system, the slot length of system may not be Isometric, therefore, terminal device needs to calculate t1, the calculating side of t1 according to the characteristics of running time-frequency resource structure of NR or LTE system Shown in the following formula of method (3):

T1=t0+ α₁·T_subframe+β₁·T_short+γ₁·T_long (3)

Wherein, T_subframeIndicate the time span of subframe, T_longIt indicates extended cyclic prefix (cyclic prefix, CP) The time span of time slot, T where symbol_shortIndicate not include the time span for extending the time slot of CP symbol, α₁、β₁、γ₁It indicates Known natural number, terminal device can obtain α from the configuration information that base station is sent₁、β₁、γ₁。

Optionally, the synchronization message of the sending instant t1 and terminal device records of the calculated synchronization message of terminal device Feature locations of the time of reception t2 corresponding to time slot, subframe or radio frames where the identical synchronization message, for example, terminal The sending instant t1 of the calculated synchronization message of the equipment and time of reception t2 of synchronization message is both corresponded to where the synchronization message Time slot, subframe or radio frames beginning boundary；Alternatively, the sending instant t1 of the calculated synchronization message of terminal device and same The time of reception t2 of step message both corresponds to the end boundary of time slot where the synchronization message, subframe or radio frames.

In other embodiments, when synchronization message and delay request message are nonperiodic signal, synchronization message and delay The sequential relationship of request message may include: synchronization message relative to the offset of reference time point and synchronization message relative to prolonging The offset of slow request message；Alternatively, synchronization message and the sequential relationship of delay request message may include: delay request message The offset of offset and synchronization message relative to delay request message relative to reference time point, terminal device can be according to prolonging Request message is determined relative to the offset and synchronization message of reference time point relative to the offset for postponing request message late Offset of the synchronization message relative to reference time point.Further, terminal device is according to reference time point and synchronization message phase For the offset of reference time point, the sending instant of synchronization message is determined, shown in formula (3) as above.

In addition, when synchronization message and delay request message be periodic signal when, synchronization message and delay request message when Order relation may include: the sending cycle of synchronization message and delay request message, synchronization message relative to delay request message The initial position of offset, synchronization message or delay request message relative to reference time point.Alternatively, in some embodiments, When synchronization message and delay request message are periodic signal, the sequential relationship of synchronization message and delay request message be can wrap Include: synchronization message and the delay sending cycle of request message, synchronization message relative to delay request message offset, synchronize disappear Breath or radio frame number, subframe numbers and the timeslot number of delay request message initial position.In addition, synchronization message is requested relative to delay The offset of message can specifically refer to synchronization message relative to the delay slot offset amount of request message, sub-frame offset or wireless Frame shifting amount.

As shown in figure 3, step S32- step S36 is denoted as the synchronous process of a clock, if synchronization message and delay request Message is nonperiodic signal, then the synchronous process of the clock is non-recurrent.If synchronization message and delay request message are Periodic signal, then the synchronous process of the clock is recurrent, as shown in figure 8, base station sends the period of reference time point t0 For T0, from the t0 moment to the time at (t0+T0) moment in, the synchronous process of clock has occurred twice, only schematically illustrate herein, The generating period of the synchronous process of clock is not limited.As shown in figure 8, if synchronization message and the sending cycle of delay request message are T1, then in the synchronous process of adjacent clock twice, in the synchronous process of a preceding clock sending instant of synchronization message and it is one time latter when T1 is spaced in the synchronous process of clock between the sending instant of synchronization message, postpones the hair of request message in the synchronous process of a preceding clock It send and is spaced T1 between the sending instant for postponing request message in moment and the synchronous process of a rear clock.For example, same in step S83 Walk message sending instant t1 and step S88 in synchronization message sending instant t5 between be divided into T1, postpone in step S84 Postpone to be divided into T1 between the sending instant t7 of request message in the sending instant t3 and step S89 of request message.It synchronizes and disappears Manner of breathing can specifically refer to the sending instant of synchronization message in the synchronous process of the same clock for postponing the offset of request message The offset of sending instant relative to delay request message, for example, the offset can be the hair of synchronization message in step S83 The time difference between the sending instant t3 for postponing request message in moment t1 and step S84 is sent, is disappeared alternatively, being synchronized in step S88 Postpone the time difference between the sending instant t7 of request message in the sending instant t5 and step S89 of breath.Synchronization message relative to The initial position of reference time point refers specifically to the sending instant t1 of synchronization message in step S83, postpones request message relative to ginseng The initial position for examining time point refers specifically to the sending instant t3 for postponing request message in step S84.

As shown in figure 8, synchronization message and the sequential relationship of delay request message may include: synchronization message and delay request The sending cycle of message such as T1, synchronization message are relative to the time between the offset such as t1 and t3 of delay request message The initial position such as t1 or t3 of difference, synchronization message or delay request message relative to reference time point.Terminal device is according to ginseng Time point, synchronization message and the sequential relationship for postponing request message are examined, determines that the sending instant of synchronization message includes following several Feasible implementation:

One kind is feasible to be achieved in that: terminal device is according to reference time point, synchronization message relative to reference time point Initial position and synchronization message sending cycle, determine the sending instant of synchronization message.

For example, terminal device according to reference time point t0, synchronization message relative to reference time point t0 initial position t1, And the sending cycle T1 of synchronization message, determine the sending instant t1 and t5 of synchronization message.

Another kind is feasible to be achieved in that: terminal device is according to reference time point, delay request message relative to reference The offset of the initial position at time point, the sending cycle for postponing request message and synchronization message relative to delay request message Amount, determines the sending instant of synchronization message.

For example, initial position of the terminal device according to reference time point t0, delay request message relative to reference time point T3, the sending cycle T1 for postponing request message determine the sending instant t3 and t7 of delay request message；Further, terminal is set The standby offset according to the sending instant t3 and t7 and synchronization message of delay request message relative to delay request message, really Make the sending instant t1 and t5 of synchronization message.As shown in figure 8, the present embodiment is with a sending cycle T0 of reference time point Example is schematically illustrated, and is described in a sending cycle T0 of reference time point, the synchronous process of recurrent clock The method that middle terminal device calculates the sending instant of synchronization message, in other sending cycles of reference time point, terminal device The method for calculating the sending instant of synchronization message is similar, does not repeat one by one herein.

Step S36, terminal device determines local clock jitter.

If clock synchronizes the process such as aperiodic generation of step S32- step S36, and base station is set to terminal in step S34 That the second temporal information that preparation is sent includes is the time of reception t4 for postponing request message, then terminal device calculates step S32 It, can be according to the sending instant t1 of synchronization message, the time of reception t2 of synchronization message, delay after the sending instant t1 of middle synchronization message The sending instant t3 of request message and the time of reception t4 of delay request message calculate terminal device by above-mentioned formula (1) Local clock relative to base station clock deviation Offset, i.e. the clock jitter from clock node relative to master clock node Offset, further, terminal device according to clock jitter correct local clock timing so that the local clock of terminal device with The clock of base station keeps synchronizing, so that the local clock of terminal device and absolute time be made to keep high-precise synchronization.In other realities It applies in example, terminal device can also correct the timing of local clock in the following way, specifically, terminal device passes through above-mentioned formula (2) transmission delay Delay of the wireless signal from base station to terminal device is calculated.Since terminal device is according to above-mentioned formula (3) The sending instant t1 of synchronization message can be calculated, further, terminal device is according to the sending instant t1 of synchronization message and wireless The local of base station when transmission delay Delay of the signal from base station to terminal device can calculate the synchronization message incoming terminal equipment The temporal information t2 of clock_gNB, t2_gNB=t1+Delay.Terminal device can by comparing synchronization message time of reception t2 and t2_gNBClock amendment is carried out, specifically, terminal device is according to t2 and t2_gNBBetween gap carry out clock amendment.

If clock synchronizes the process such as aperiodic generation of step S32- step S36, and base station is set to terminal in step S34 What the second temporal information that preparation is sent included is that base station starts to receive the practical reception of the initial time of delay request message and base station The time difference Δ t of time of reception when to the delay request message, then terminal device also needs to calculate delay request according to Δ t The time of reception t4 of message.In NR system, there are different running time-frequency resource structure Numerology, different time-gaps pair for radio frames The time span answered may be not equal.If Δ t be base station according to the corresponding boundary of time slot of t4 relative to reference time point t0 Offset, omit offset of the t4 relative to time slot granularity, subframe granularity, radio frames granularity in the offset of t0, obtain Less than the time data of slot length, then terminal device can calculate t4 according to the characteristics of running time-frequency resource structure of NR or LTE system, Shown in the following formula of the calculation method of t4 (4):

T4=t0+ α₄·T_subframe+β₄·T_short+γ₄·T_long+Δt (4)

Wherein, T_subframeIndicate the time span of subframe, T_longIt indicates extended cyclic prefix (cyclic prefix, CP) The time span of time slot, T where symbol_shortIndicate not include the time span for extending the time slot of CP symbol, α₄、β₄、γ₄It indicates Known natural number, terminal device can obtain α from the configuration information that base station is sent₄、β₄、γ₄.Further, terminal device root It is asked according to the sending instant t1 of synchronization message, the time of reception t2 of synchronization message, the sending instant t3 of delay request message and delay The time of reception t4 for seeking message, by above-mentioned formula (1), the local clock of computing terminal equipment relative to base station clock it is inclined Poor Offset, further, terminal device correct the timing of local clock according to clock jitter, so that the local clock of terminal device It is synchronous with the holding of the clock of base station, so that the local clock of terminal device and absolute time be made to keep high-precise synchronization.At other In embodiment, terminal device can also correct the timing of local clock in the following way, specifically, terminal device passes through above-mentioned public affairs Formula (2) calculates transmission delay Delay of the wireless signal from base station to terminal device.Since terminal device is according to above-mentioned formula (3) the sending instant t1 of synchronization message can be calculated, further, terminal device is according to the sending instant t1 and nothing of synchronization message The sheet of base station when transmission delay Delay of the line signal from base station to terminal device can calculate the synchronization message incoming terminal equipment The temporal information t2 of ground clock_gNB, t2_gNB=t1+Delay.Terminal device can by comparing synchronization message time of reception t2 and t2_gNBClock amendment is carried out, specifically, terminal device is according to t2 and t2_gNBBetween gap carry out clock amendment.

If clock synchronizes process cycle, terminal device can periodically calculate local clock jitter, such as Fig. 8 institute Show, includes the synchronous process of two clocks in cycle T 0, in the synchronous process of each clock, terminal device can calculate primary local Clock jitter, for example, terminal device can calculate primary local in the synchronous process of the corresponding clock of step S83- step S87 Clock jitter corresponds to step S87；In the synchronous process of the corresponding clock of step S88- step S812, terminal device can be another It is secondary to calculate local clock jitter, correspond to step S812.The synchronous process of clock corresponding for step S83- step S87, If what the second temporal information that base station is sent to terminal device included is the time of reception for postponing request message in step S85 T4, then in step S87, terminal device can calculate the local clock of terminal device relative to base station according to above-mentioned formula (1) Clock deviation Offset1,Terminal device is corrected primary according to clock jitter Offset1 The timing of local clock.The synchronous process of corresponding for step S88- step S812 clock, if in step S810, base station is to end That the second temporal information that end equipment is sent includes is the time of reception t8 for postponing request message, then in step S812, terminal Equipment can according to the sending instant t5 of synchronization message, synchronization message time of reception t6, postpone the sending instant t7 of request message With delay request message time of reception t8, when calculating the local of terminal device by principle identical with above-mentioned formula (1) Deviation Offset2 of the clock relative to the clock of base station,Terminal device is according to clock jitter Offset2 corrects the timing of local clock again.Optionally, Offset1 and Offset2 may be identical, it is also possible to different.At it In his embodiment, terminal device can also correct the timing of local clock in the following way, specifically, in step S83- step In the synchronous process of the corresponding clock of S87, terminal device can calculate wireless signal according to above-mentioned formula (2) and set from base station to terminal Standby transmission delay Delay1, further according to the sending instant t1 and wireless signal of synchronization message from base station to terminal device The temporal information t2 of the local clock of base station when transmission delay Delay1 calculates the synchronization message incoming terminal equipment_gNB, t2_gNB =t1+Delay1, terminal device is according to t2 and t2_gNBBetween gap correct a clock.It is corresponding in step S88- step S812 The synchronous process of clock in, terminal device can calculate biography of the wireless signal from base station to terminal device according to above-mentioned formula (2) Defeated delay Delay2 further prolongs according to the transmission of the sending instant t5 and wireless signal of synchronization message from base station to terminal device The temporal information t6 of the local clock of base station when slow Delay2 calculates the synchronization message incoming terminal equipment_gNB, t6_gNB=t5+ Delay2, terminal device is according to t6 and t6_gNBBetween gap correct clock again.Optionally, Delay1 and Delay2 may phase Together, it is also possible to different.

If clock synchronizes process cycle, and in the synchronous process of each clock, base station is sent to terminal device What the second temporal information included is that base station starts the initial time for receiving delay request message and base station is an actually-received the delay The time difference of time of reception when request message, then terminal device can according in the synchronous process of each clock, the terminal device from The base station received time difference calculates the time of reception for postponing request message in the synchronous process of the clock.As shown in figure 8, in step Suddenly in the synchronous process of the corresponding clock of S83- step S87, if the second temporal information packet that the base station step S85 is sent to terminal device What is included is that base station starts to receive the connecing when initial time for postponing request message is an actually-received the delay request message with base station The time difference Δ t1 that time receiving carves, then in step S87, terminal device need to be according to the time of reception of Δ t1 computing relay request message The calculation method of t4, t4 are similar with formula (4)；Further, terminal device is according to the sending instant t1 of synchronization message, synchronization message Time of reception t2, postpone request message sending instant t3 and postpone request message time of reception t4, computing terminal equipment Local clock relative to base station clock deviation Offset1, terminal device according to clock jitter Offset1 correct a deuterzooid The timing of ground clock.In the synchronous process of the corresponding clock of step S88- step S812, if the base station step S810 is to terminal device Send the second temporal information include be base station start receive delay request message initial time be an actually-received with base station The time difference Δ t2 of the time of reception when delay request message, then in step S812, terminal device need to be calculated according to Δ t2 Postpone the time of reception t8 of request message, the calculation method of t8 is similar with formula (4)；Further, terminal device disappears according to synchronizing The sending instant t5 of breath, the time of reception t6 of synchronization message, the sending instant t7 and delay request message that postpone request message Time of reception t8, the deviation Offset2 of the local clock of computing terminal equipment relative to the clock of base station, terminal device according to when Clock deviation Offset2 corrects the timing of local clock again.Optionally, Offset1 and Offset2 may be identical, it is also possible to no Together；Δ t1 and Δ t2 may be identical, it is also possible to different.In other embodiments, terminal device can also be corrected in the following way The timing of local clock, specifically, terminal device is according to Δ t1 in the synchronous process of the corresponding clock of step S83- step S87 After the time of reception t4 of computing relay request message, wireless signal is calculated from base station to terminal device according to above-mentioned formula (2) Transmission delay Delay1, the further biography according to the sending instant t1 and wireless signal of synchronization message from base station to terminal device The temporal information t2 of the local clock of base station when defeated delay Delay1 calculates the synchronization message incoming terminal equipment_gNB, t2_gNB= T1+Delay1, terminal device is according to t2 and t2_gNBBetween gap correct a clock.It is corresponding in step S88- step S812 In the synchronous process of clock, after time of reception t8 of the terminal device according to Δ t2 computing relay request message, according to above-mentioned formula (2) Transmission delay Delay2 of the wireless signal from base station to terminal device is calculated, further according to the sending instant t5 of synchronization message Base station when calculating the synchronization message incoming terminal equipment with transmission delay Delay2 of the wireless signal from base station to terminal device Local clock temporal information t6_gNB, t6_gNB=t5+Delay2, terminal device is according to t6 and t6_gNBBetween gap repair again Positive clock.Optionally, Delay1 and Delay2 may be identical, it is also possible to different.

As it can be seen that in the synchronous process of each clock, terminal device can be corrected once if clock synchronizes process cycle The timing of local clock, and a high-precise synchronization is carried out with absolute time.

In the present embodiment, after the network equipment sends downlink signal such as synchronization message to terminal device, the network equipment is not necessarily to Message is followed to terminal device transmission, i.e. the network equipment is not necessarily to carry synchronization message by following message to terminal device transmission Sending instant, the time needed for shortening the synchronous process of single clock, terminal device can for example be synchronized according to uplink signal to disappear Breath and the reference time point that downlink signal for example postpones the sequential relationship of request message and terminal device is received from the network equipment, Determine the sending instant of synchronization message.When the network equipment corresponds to multiple terminal devices, the network equipment is set to each terminal Preparation no longer needs to follow message to the transmission of each terminal device after sending synchronization message, so that the network equipment is not necessarily to each follow and disappear Breath configuration running time-frequency resource reduces the network equipment to time-frequency scheduling of resource to save the running time-frequency resource in wireless network Complexity.

On the basis of the above embodiments, terminal device may be mobile, then the terminal device can move into the base Except corresponding cell of standing, it is also possible to be moved within the corresponding cell in the base station.If base station is sent out in a manner of broadcast or multicast When sending reference time point t0, which does not access the corresponding cell in the base station also, then the terminal device will be unable to receive The reference time of the base station broadcast or multicast point t0, it is subsequent when terminal device accesses the corresponding cell in the base station, due to not connecing The reference time point of base station transmission is received, then it is synchronous to will be unable to progress clock for the terminal device.In order to solve this problem, this reality It applies example and provides another clock synchronizing method, specifically as shown in figure 9, the clock synchronizing method includes the following steps:

Step S91, base station broadcast or multicast reference time point t0.

In the present embodiment, base station periodically sends reference time point in a manner of broadcast or multicast, such as when reference Between the sending cycle put be T0.If it is corresponding small that terminal device does not access the base station in base station broadcast or multicast reference time point Area, then the terminal device will be unable to receive reference time point.

Step S92, terminal device accesses cell.

Within the T0 time after base station broadcast or multicast reference time point t0, it is corresponding small that terminal device accesses the base station Area, for example, cell switching, which has occurred, in the terminal device is moved to the corresponding cell in the base station from other cells.

Step S93, base station sends configuration information to terminal device.

Base station sends configuration information to the terminal device of new access cell, which includes: the hair of reference time point Send cycle T 0, uplink signal or downlink signal relative to the hair of the initial position of reference time point, uplink signal and downlink signal Send cycle T 1, uplink signal relative to the offset of downlink signal, uplink signal and downlink signal running time-frequency resource and working as The reference time point such as t0 sent in the sending cycle T0 of preceding reference time point.

Optionally, which specifically can be synchronization message, which specifically can be delay request message. Base station can send the configuration information to terminal device by system signaling, and system signaling specifically can be RRC signaling, MAC CE letter It enables, one or several combination in DCI signaling.

Step S94, base station sends synchronization message to terminal device.

The synchronization message that base station is sent to terminal device, when terminal device receives the synchronization message, terminal device note Record the time of reception t2 of the synchronization message.

Step S95, terminal device sends delay request message to base station.

The delay request message that terminal device is sent to base station, when terminal device sends delay request message, record prolongs The sending instant t3 of slow request message.When base station receives the delay request message, the reception of the delay request message is recorded Moment t4.

Step S96, base station sends the second temporal information to terminal device, which includes t4 or Δ t.

Base station sends the second temporal information to terminal device, which may include postponing connecing for request message Time receiving carves t4, alternatively, second temporal information may include that base station starts to receive initial time and the base station of delay request message The time difference Δ t of time of reception when being an actually-received the delay request message.The method and above-described embodiment of base station calculating Δ t Described is consistent.

Step S97, terminal device determines the sending instant of synchronization message.

Specifically, terminal device can according to the base station step S93 send configuration information in reference time point such as t0, under Initial position of the row signal relative to the reference time point, determines the downlink signal i.e. sending instant of synchronization message.

Step S98, terminal device determines local clock jitter.

Terminal device determines that the method for local clock jitter is consistent with above-described embodiment, and details are not described herein again.

The present embodiment sends configuration information to the terminal device of new access cell by base station, which includes: ginseng Examine sending cycle T0, uplink signal or the downlink signal at time point relative to the initial position of reference time point, uplink signal and Time-frequency of the sending cycle T1, uplink signal of downlink signal relative to the offset of downlink signal, uplink signal and downlink signal Resource and the reference time point such as t0 sent in the sending cycle T0 of current reference time point, guarantee newly access small It is synchronous that the terminal device in area can carry out clock according to the configuration information.

On the basis of the above embodiments, base station can be according to the stability of local clock module and preset clock essence Error range is spent, determines that period i.e. base station of the base station and external clock correction obtains the period of accurate absolute time, it should Period is denoted as T, while the cycle T is also the update cycle of the base station local clock.Optionally, base station is after calibrating local clock Broadcast or multicast reference time point, thus can guarantee the synchronous precision of terminal device clock, therefore, the transmission week of reference time point Phase T0 is less than or equal to the update cycle T of the base station local clock.

In addition, base station can also according to the clock synchronization accuracy of terminal device and the clock stability of the terminal device, The sending cycle T1 for determining uplink signal or downlink signal, due to different terminal equipment clock can having a certain difference property, Then the sending cycle T1 of the corresponding uplink signal of different terminal devices or downlink signal may be different, such as shown in Fig. 8, Base station send reference time point t0 period be T0, from the t0 moment to the time at (t0+T0) moment in, clock synchronizes process Twice, i.e., in a sending cycle T0 of reference time point, uplink signal or downlink signal periodically have sent twice. If different terminal equipment corresponds to the sending cycle T1 of different uplink signal or downlink signal, in a hair of reference time point It send in cycle T 0, the number of the uplink signal of different terminal equipment periodicity sending may be different, for example, terminal device A and end End equipment B is in the coverage area of the base station, and in a sending cycle T0 of reference time point, terminal device A can be periodical Send uplink signal twice, terminal device B can periodicity sending uplink signal three times, then terminal device A can carry out clock twice It is synchronous that synchronous, terminal device B can carry out clock three times.Due in a sending cycle T0 of reference time point, terminal device B It is more synchronous often than terminal device A progress clock to carry out the synchronous number of clock, then the clock accuracy of terminal device B compares terminal The clock accuracy of equipment A is high.

The present embodiment by base station according to the clock synchronization accuracy of terminal device and the clock stability of the terminal device, The sending cycle of the corresponding uplink signal of different terminal equipment or downlink signal is determined, so that different terminal equipment can correspond to difference The clock synchronization process in period, different terminal devices are not necessarily to while carrying out clock synchronization, improve different terminal equipment progress The synchronous flexibility of clock.

Figure 10 is another clock synchronizing method flow chart provided by the embodiments of the present application.As shown in Figure 10, the present embodiment The clock synchronizing method includes the following steps:

Step S101, base station sends synchronization message to terminal device.

In the present embodiment, the synchronization message that base station is sent to terminal device is downlink signal.When terminal device receives When the synchronization message, the time of reception t2 of the terminal device records synchronization message.Since wireless signal can produce in transmission process Raw delay, so the time of reception t2 that base station sends the sending instant t1 of synchronization message and terminal device receives the synchronization message can It can be different.

Optionally, the sending instant t1 of synchronization message and the time of reception t2 of synchronization message correspond to it is identical this synchronize disappear The feature locations of time slot, subframe or radio frames where ceasing, for example, the sending instant t1 of synchronization message and connecing for synchronization message Time receiving carves the beginning boundary that t2 both corresponds to time slot where the synchronization message, subframe or radio frames；Alternatively, synchronization message The sending instant t1 and time of reception t2 of synchronization message both corresponds to time slot where the synchronization message, subframe or radio frames End boundary.

Step S102, terminal device sends delay request message to base station.

In the present embodiment, the delay request message that terminal device is sent to base station is uplink signal.When terminal device is sent out When sending delay request message, the sending instant t3 of record delay request message.When base station receives the delay request message, note Record the time of reception t4 of the delay request message.Since wireless signal can generate delay in transmission process, so terminal device Time of reception t4 that the sending instant t3 and base station for sending delay request message receive the delay request message may be different.

In the present embodiment, the sequencing of step S101 and step S102 are not limited, either base station is first to terminal Equipment sends synchronization message, sends after terminal device to base station and postpones request message, is also possible to terminal device and first sends out to base station It send delay request message, sends synchronization message to terminal device behind base station, i.e., do not limit synchronization message and postpone request message Sequencing, for different terminal devices, the sequencing of synchronization message and delay request message can be different.

Step S103, for terminal device to base station transmission time information, which includes the time of reception of synchronization message The t2 or sending instant t3 for postponing request message.

Optionally, it if terminal device includes the time of reception t2 of synchronization message to the temporal information that base station is sent, walks Rapid S103 can after step slol, can also after step s 102, i.e., terminal device can receive synchronization message Later, the forward direction base station for sending delay request message sends t2, can also send sending the rear of delay request message to base station t2.If terminal device includes the sending instant t3 for postponing request message to the temporal information that base station is sent, step S103 exists After step S102, i.e., terminal device is sending the rear to base station transmission t3 of delay request message.

Step S104, base station determines the time of reception t2 of synchronization message and postpones the association of the sending instant t3 of request message Relationship.

Specifically, base station is mentioned according to the transmission of the sequential relationship and terminal device of synchronization message and delay request message The preceding time determines the incidence relation of the time of reception t2 of synchronization message and the sending instant t3 of delay request message.Specifically, eventually End equipment can be previously stored with synchronization message and postpone the sequential relationship of request message, can also be from network side for example from base station The middle sequential relationship for obtaining synchronization message and postponing request message.Terminal device obtains synchronization message and delay request from base station The sequential relationship of message includes following several feasible implementations:

It is a kind of feasible to be achieved in that: as shown in Figure 10, base station when sending synchronization message to terminal device, while to Terminal device sends synchronization message and postpones the sequential relationship of request message.

Another kind is feasible to be achieved in that: as shown in figure 11, the difference of Figure 11 and Figure 10 are: base station is set to terminal Before preparation send synchronization message, base station sends configuration information, step S100 as shown in figure 11, the configuration information to terminal device Sequential relationship including synchronization message and delay request message.In addition, the configuration information can also include synchronization message and delay The running time-frequency resource of request message.Optionally, base station can pass through (New Radio, NR) system or the long term evolution (Long of newly eating dishes without rice or wine Term Evolution, LTE) system signaling such as Downlink Control Information (Downlink Control Information, DCI) Signaling, media access control (Media Access Control, MAC) control element (Control Element, CE) signaling, The combination of one or more of wireless heterogeneous networks (Radio Resource Control, RRC) signaling is sent out to terminal device Send configuration information.

Specifically, when synchronization message and delay request message are nonperiodic signal, synchronization message and delay request message Sequential relationship may include: synchronization message the corresponding radio frame number of time-domain resource, subframe numbers or timeslot number, and delay The corresponding radio frame number of the time-domain resource of request message, subframe numbers or timeslot number.In addition, synchronization message and delay request message Sequential relationship can also include: synchronization message relative to delay request message offset.Synchronization message is asked relative to delay The offset of message is asked to can be slot offset amount, sub-frame offset or radio frames of the synchronization message relative to delay request message Offset.

When synchronization message and delay request message are periodic signal, the sequential relationship of synchronization message and delay request message May include: synchronization message and the delay sending cycle of request message, synchronization message relative to delay request message offset, Synchronization message or the initial position for postponing request message.Wherein, synchronization message can be with relative to the offset of delay request message It is slot offset amount, sub-frame offset or wireless frame shifting amount of the synchronization message relative to delay request message.

Due to terminal device every time to base station send uplink signal when, base station start receive uplink signal initial time with Base station is an actually-received between the time of reception of the uplink signal that there may be the time differences, and the time difference is to change over time , optionally, which is denoted as TA (t), for example, base station can send out it in different moments calculated time difference TA (t) Give terminal device, the time difference that terminal device can be received according to the time difference and historical juncture that current time receives, Determine that terminal device sends the lead of uplink signal in subsequent time.In the present embodiment, base station can be according to it in difference The time difference TA (t) that moment is sent to terminal device calculates the transmission pre-set time of terminal device, and the transmission of terminal device mentions The preceding time is denoted as TA_legacy, TA_legacyThe following formula of calculation method (5) shown in:

TA_legacy=∑ TA (t) (5)

Optionally, TA_legacyIt can be and access the corresponding cell in the base station from the terminal device and receive delay to the base station The aggregate-value of TA (t) during this section of request message.

Base station is according to synchronization message and postpones the sequential relationship of request message and the transmission pre-set time of terminal device TA_legacy, the time of reception t2 of determining synchronization message and the incidence relation for the sending instant t3 for postponing request message are specific as follows Shown in formula (6):

T3=t2+ α₂·T_subframe+β₂·T_short+γ₂·T_long-TA_legacy (6)

Wherein, T_subframeIndicate the time span of subframe, T_longIt indicates extended cyclic prefix (cyclic prefix, CP) The time span of time slot, T where symbol_shortIndicate not include the time span for extending the time slot of CP symbol, α₂、β₂、γ₂It indicates Known natural number, terminal device can obtain α from the configuration information that base station is sent₂、β₂、γ₂。

Step S105, base station determines the clock jitter of terminal device.

Specifically, base station is closed according to the association of the time of reception t2 of synchronization message and the sending instant t3 of delay request message System, the sending instant t3 of the time of reception t2 of synchronization message or delay request message, the sending instant t1 of synchronization message, delay are asked The time of reception t4 for seeking message, determines the clock jitter of terminal device.

If in step S103, terminal device includes the time of reception t2 of synchronization message to the temporal information that base station is sent, Then base station can be according to the incidence relation such as formula of the sending instant t3 of the time of reception t2 and delay request message of synchronization message (6) the sending instant t3 of delay request message is calculated.Base station is further according to the sending instant t1 of synchronization message, synchronization message Time of reception t2, postpone request message sending instant t3 and postpone request message time of reception t4, pass through above-mentioned formula (1), the clock jitter of computing terminal equipment.

If in step S103, terminal device includes postponing the sending instant of request message to the temporal information that base station is sent T3, then base station can be for example public according to the incidence relation of the sending instant t3 of the time of reception t2 and delay request message of synchronization message Formula (6) calculates the time of reception t2 of synchronization message.Base station is further according to the sending instant t1 of synchronization message, synchronization message Time of reception t2, the sending instant t3 for postponing request message and the time of reception t4 for postponing request message, pass through above-mentioned formula (1), the clock jitter of computing terminal equipment.

Step S106, base station is to terminal device tranmitting data register deviation.

Base station is to terminal device tranmitting data register deviation, can be inclined according to the clock after terminal device receives the clock jitter The timing of difference amendment local clock, so that the local clock of terminal device is synchronous with the holding of the clock of base station, so that terminal be made to set Standby local clock and absolute time keeps high-precise synchronization.

By taking Figure 10 as an example, step S101- step S106 is denoted as the synchronous process of a clock, if synchronization message and delay are asked Seeking message is nonperiodic signal, then the synchronous process of the clock is non-recurrent.If synchronization message and delay request message For periodic signal, then the synchronous process of the clock is recurrent, and in the synchronous process of each clock, base station can be calculated once The clock jitter of terminal device, terminal device can correct the timing of local clock according to the clock jitter.Different terminal equipment Clock jitter may be different, and base station can also determine each terminal device pair according to the clock jitter of each terminal device The generating period of the synchronous process of the clock answered, for example, terminal device biggish for clock jitter, base station can reduce the terminal and set Standby corresponding clock synchronizes the generating period of process, for example, base station can send synchronization message by reducing to the terminal device Period is to reduce the generating period that the corresponding clock of the terminal device synchronizes process, so that the corresponding clock of the terminal device is synchronous The occurrence frequency of process increases, so that the terminal device repeatedly corrects the timing of local clock, to make the sheet of the terminal device Ground clock and absolute time keep high-precise synchronization.

In the present embodiment, after the network equipment sends downlink signal such as synchronization message to terminal device, the network equipment is not necessarily to Message is followed to terminal device transmission, i.e. the network equipment is not necessarily to carry synchronization message by following message to terminal device transmission Sending instant, the time needed for shortening the synchronous process of single clock, terminal device can for example be synchronized according to uplink signal to disappear Breath and the reference time point that downlink signal for example postpones the sequential relationship of request message and terminal device is received from the network equipment, Determine the sending instant of synchronization message.When the network equipment corresponds to multiple terminal devices, the network equipment is set to each terminal Preparation no longer needs to follow message to the transmission of each terminal device after sending synchronization message, so that the network equipment is not necessarily to each follow and disappear Breath configuration running time-frequency resource reduces the network equipment to time-frequency scheduling of resource to save the running time-frequency resource in wireless network Complexity.In addition, by the clock jitter of network equipment computing terminal equipment, and according to the clock jitter of each terminal device, The generating period for determining the synchronous process of the corresponding clock of each terminal device improves different terminal equipment and carries out what clock synchronized Flexibility.

Figure 12 is a kind of structural schematic diagram of communication device provided by the embodiments of the present application.As shown in figure 12, which fills Setting 120 includes: receiving module 121, sending module 122, determining module 123.Wherein, receiving module 121 is used for from the network equipment First time information is received, the first time information is used to indicate the temporal information of reference time point；From the network equipment Receive downlink signal；Sending module 122 is used to send uplink signal to the network equipment；Receiving module 121 is also used to from institute It states the network equipment and receives the second temporal information, second temporal information is for determining that the network equipment receives the uplink letter Number the time of reception；Determining module 123 be used for according to the reference time point, the uplink signal and the downlink signal when Order relation determines the sending instant of the downlink signal；It is connect according to the sending instant of the downlink signal, the downlink signal Quarter in time receiving, the sending instant of the uplink signal, the uplink signal the time of reception, determine that the clock of communication device 120 is inclined Difference.

In Figure 12, further, the sequential relationship of the uplink signal and the downlink signal includes: the downlink letter Offset relative to reference time point of offset, the uplink signal number relative to reference time point.

In the above-described embodiments, determining module 123 is believed according to the reference time point, the uplink signal and the downlink Number sequential relationship be specifically used for when determining the sending instant of the downlink signal: according to the reference time point, it is described under Offset of the row signal relative to reference time point, determines the sending instant of the downlink signal.

In the above-described embodiments, the uplink signal includes: the uplink signal relative to the offset of reference time point Wireless frame shifting amount of the corresponding radio frame boundaries relative to the reference time point；Or the corresponding subframe of the uplink signal Sub-frame offset of the boundary relative to the reference time point；Or the corresponding boundary of time slot of the uplink signal is relative to described The slot offset amount of reference time point.

In the above-described embodiments, the downlink signal includes: the downlink signal relative to the offset of reference time point Wireless frame shifting amount of the corresponding radio frame boundaries relative to the reference time；Or the corresponding subframe side of the downlink signal Sub-frame offset of the boundary relative to the reference time point；Or the corresponding boundary of time slot of the downlink signal is relative to the ginseng Examine the slot offset amount at time point.

In the above-described embodiments, second temporal information includes the reception that the network equipment receives the uplink signal Moment.

In the above-described embodiments, second temporal information includes that the network equipment starts to receive the uplink signal Initial time and the network equipment receive the time difference of the time of reception of the uplink signal；Determining module 123 is also used to: Offset and the time difference according to the reference time point, the uplink signal relative to reference time point, determine described in The network equipment receives the time of reception when uplink signal.

In the above-described embodiments, the sequential relationship of the uplink signal and the downlink signal includes: the uplink signal Offset, the uplink signal with the sending cycle, the uplink signal of the downlink signal relative to the downlink signal Or initial position of the downlink signal relative to the reference time point.

In the above-described embodiments, determining module 123 is believed according to the reference time point, the uplink signal and the downlink Number sequential relationship be specifically used for when determining the sending instant of the downlink signal: according to the reference time point, it is described under Row signal determines the downlink relative to the initial position of the reference time point and the sending cycle of the downlink signal The sending instant of signal；Or the starting according to the reference time point, the uplink signal relative to the reference time point Position, the uplink signal offset relative to the downlink signal of sending cycle and the uplink signal, determine institute State the sending instant of downlink signal.

In the above-described embodiments, receiving module 121 is also used to: receiving configuration information, the configuration from the network equipment Information includes the sequential relationship of the uplink signal and the downlink signal.

In the above-described embodiments, the configuration information further include: the sending cycle of the first time information.

In the above-described embodiments, the configuration information further include: right in the current sending cycle of the first time information The temporal information for the reference time point answered.

The communication device of embodiment illustrated in fig. 12 can be used for executing the technical solution of above method embodiment, realization principle Similar with technical effect, details are not described herein again.

Figure 13 is the structural schematic diagram of another communication device provided by the embodiments of the present application.As shown in figure 13, communication dress Setting 130 includes: sending module 131, receiving module 132.Wherein, sending module 131 is used to send at the first time to terminal device Information, the first time information are used to indicate the temporal information of reference time point；Downlink signal is sent to the terminal device； Receiving module 132 is used to receive uplink signal from the terminal device；Sending module 131 is also used to: Xiang Suoshu terminal device hair The second temporal information is sent, second temporal information is for determining that communication device 130 receives the time of reception of the uplink signal.

In Figure 13, further, sending module 131 is also used to: configuration information is sent to terminal device, it is described to match confidence Breath includes the sequential relationship of the uplink signal and the downlink signal.

In the above-described embodiments, the sequential relationship of the uplink signal and the downlink signal includes: the downlink signal The offset of offset, the uplink signal relative to reference time point relative to reference time point.

The communication device of embodiment illustrated in fig. 13 can be used for executing the technical solution of above method embodiment, realization principle Similar with technical effect, details are not described herein again.

Figure 14 is the structural schematic diagram of another communication device provided by the embodiments of the present application.As shown in figure 14, communication dress Setting 140 includes: sending module 141, receiving module 142, determining module 143.Wherein, sending module 141 is used for terminal device Send downlink signal；Receiving module 142 is used to receive uplink signal from the terminal device；From the terminal device receiving time Information, the temporal information include the time of reception of the downlink signal or the sending instant of the uplink signal；Determining module 143 for the transmission pre-set time according to the sequential relationship of the uplink signal and the downlink signal, the terminal device, really The incidence relation of the sending instant of the time of reception and uplink signal of the fixed downlink signal；According to the downlink signal The incidence relation of the sending instant of the time of reception and the uplink signal, the time of reception of the downlink signal or uplink letter Number sending instant, the sending instant of the downlink signal, the uplink signal the time of reception, determine the terminal device Clock jitter；Sending module 141 is also used to: Xiang Suoshu terminal device sends the clock jitter of the terminal device.

In Figure 14, further, sending module 141 is also used to: Xiang Suoshu terminal device sends configuration information, described to match Confidence breath includes the sequential relationship of the uplink signal and the downlink signal.

In the above-described embodiments, the sequential relationship of the uplink signal and the downlink signal includes: the uplink signal The corresponding radio frame number of time-domain resource, subframe numbers or timeslot number, the corresponding radio frames of the time-domain resource of the downlink signal Number, subframe numbers or timeslot number.

In the above-described embodiments, the sequential relationship of the uplink signal and the downlink signal includes: the uplink signal Offset, the uplink signal with the sending cycle, the uplink signal of the downlink signal relative to the downlink signal Or the initial position of the downlink signal.

The communication device of embodiment illustrated in fig. 14 can be used for executing the technical solution of above method embodiment, realization principle Similar with technical effect, details are not described herein again.

Figure 15 is the structural schematic diagram of another communication device provided by the embodiments of the present application.As shown in figure 15, communication dress Setting 150 includes: receiving module 151, sending module 152.Wherein, receiving module 151 is used to receive downlink signal from the network equipment； Sending module 152 is used to send uplink signal to the network equipment；To the network equipment transmission time information, the time Information includes the time of reception of the downlink signal or the sending instant of the uplink signal；Receiving module 151 is also used to: from institute State the clock jitter that the network equipment receives communication device 150.

In Figure 15, further, receiving module 151 is also used to: configuration information is received from the network equipment, it is described to match confidence Breath includes the sequential relationship of the uplink signal and the downlink signal.

The communication device of embodiment illustrated in fig. 15 can be used for executing the technical solution of above method embodiment, realization principle Similar with technical effect, details are not described herein again.

It should be understood that the division of the modules of the above communication device is only a kind of division of logic function, in actual implementation It can completely or partially be integrated on a physical entity, it can also be physically separate.And these modules can be all with software It is realized by way of processing element calls；It can also all realize in the form of hardware；It can be logical with software with part of module The form for crossing processing element calling realizes that part of module passes through formal implementation of hardware.For example, determining module can be individually to set Vertical processing element also can integrate in communication device, such as realize in some chip of base station or terminal device, in addition, It can also be stored in the form of program in the memory of communication device, be called and held by some processing element of communication device The function of the above modules of row.The realization of other modules is similar therewith.Furthermore these modules completely or partially can integrate Together, it can also independently realize.Processing element described here can be a kind of integrated circuit, the processing capacity with signal. During realization, each step of the above method or the above modules can be patrolled by the integrated of the hardware in processor elements The instruction for collecting circuit or software form is completed.

For example, the above module can be arranged to implement one or more integrated circuits of above method, such as: One or more specific integrated circuits (Application Specific Integrated Circuit, ASIC), or, one Or multi-microprocessor (digital singnal processor, DSP), or, one or more field programmable gate array (Field Programmable Gate Array, FPGA) etc..For another example, when some above module dispatches journey by processing element When the form of sequence is realized, which can be general processor, such as central processing unit (Central Processing Unit, CPU) or it is other can be with the processor of caller.For another example, these modules can integrate together, with system on chip The form of (system-on-a-chip, SOC) is realized.

Figure 16 is a kind of structural schematic diagram of terminal device provided by the embodiments of the present application.As shown in figure 16, terminal device 160 include: memory 161, processor 162 and R-T unit 163, wherein memory 161 is for storing computer program；Place Reason device 162 calls the computer program, when computer program is performed, for performing the following operations: passing through R-T unit 163 receive first time information from the network equipment, and the first time information is used to indicate the temporal information of reference time point；It is logical It crosses R-T unit 163 and receives downlink signal from the network equipment；Uplink is sent to the network equipment by R-T unit 163 Signal；The second temporal information is received from the network equipment by R-T unit 163, second temporal information is for determining institute State the time of reception that the network equipment receives the uplink signal；According to the reference time point, the uplink signal and it is described under The sequential relationship of row signal determines the sending instant of the downlink signal；According to the sending instant of the downlink signal, it is described under The time of reception of row signal, the sending instant of the uplink signal, the uplink signal the time of reception, determine that the terminal is set Standby clock jitter.

In Figure 16, further, the sequential relationship of the uplink signal and the downlink signal includes: the downlink letter Offset relative to reference time point of offset, the uplink signal number relative to reference time point.

In the above-described embodiments, processor 162 is according to the reference time point, the uplink signal and the downlink signal Sequential relationship be specifically used for when determining the sending instant of the downlink signal: according to the reference time point, the downlink Offset of the signal relative to reference time point, determines the sending instant of the downlink signal.

In the above-described embodiments, second temporal information includes that the network equipment starts to receive the uplink signal Initial time and the network equipment receive the time difference of the time of reception of the uplink signal；Processor 162 is also used to: root Offset and the time difference according to the reference time point, the uplink signal relative to reference time point, determine the net Network equipment receives the time of reception when uplink signal.

In the above-described embodiments, processor 162 is according to the reference time point, the uplink signal and the downlink signal Sequential relationship be specifically used for when determining the sending instant of the downlink signal: according to the reference time point, the downlink Signal determines the downlink letter relative to the initial position of the reference time point and the sending cycle of the downlink signal Number sending instant；Or the start bit according to the reference time point, the uplink signal relative to the reference time point It sets, the offset of the sending cycle of the uplink signal and the uplink signal relative to the downlink signal, described in determination The sending instant of downlink signal.

In the above-described embodiments, processor 162 is also used to: being received and is configured from the network equipment by R-T unit 163 Information, the configuration information include the sequential relationship of the uplink signal and the downlink signal.

In other embodiments, memory 161 is for storing computer program；Processor 162 calls the computer journey Sequence, when computer program is performed, for performing the following operations: downlink letter is received from the network equipment by R-T unit 163 Number；Uplink signal is sent to the network equipment by R-T unit 163；It is sent out by R-T unit 163 to the network equipment Temporal information is sent, the temporal information includes the time of reception of the downlink signal or the sending instant of the uplink signal；It is logical Cross the clock jitter that R-T unit 163 receives the terminal device from the network equipment.

Further, processor 162 is also used to: configuration information is received from the network equipment by R-T unit 163, it is described to match Confidence breath includes the sequential relationship of the uplink signal and the downlink signal.

The terminal device of embodiment illustrated in fig. 16 can be used for executing the technical solution of above method embodiment, realization principle Similar with technical effect, details are not described herein again.

In Figure 16, R-T unit 163 can be connect with antenna.In the downstream direction, R-T unit 163 is connect by antenna The information that base station is sent is received, and sends information to processor 162 and is handled.In the upstream direction, processor 162 is to terminal The data of equipment are handled, and are sent to base station by R-T unit 163.

The memory 161 is used to store the journey for realizing above method embodiment or embodiment illustrated in fig. 12 modules Sequence, processor 162 call the program, the operation of above method embodiment are executed, to realize modules shown in Figure 12.

Alternatively, some or all of above modules can also be embedded in the terminal device by way of integrated circuit Some chips on realize.And they can be implemented separately, and also can integrate together.That is the above module can be by It is configured to implement one or more integrated circuits of above method, such as: one or more specific integrated circuits (Application Specific Integrated Circuit, ASIC), or, one or more microprocessors (digital Singnal processor, DSP), or, one or more field programmable gate array (Field Programmable Gate Array, FPGA) etc..

Figure 17 is a kind of structural schematic diagram of the network equipment provided by the embodiments of the present application.As shown in figure 17, the network equipment 170 include: memory 171, processor 172 and R-T unit 173, wherein memory 171 is for storing computer program；Place Reason device 172 calls the computer program, when computer program is performed, for performing the following operations: passing through R-T unit 173 send first time information to terminal device, and the first time information is used to indicate the temporal information of reference time point；To The terminal device sends downlink signal；Uplink signal is received from the terminal device by R-T unit 173；It is filled by transmitting-receiving It sets 173 and sends the second temporal information to the terminal device, second temporal information is for determining that the network equipment receives The time of reception of the uplink signal.

In Figure 17, further, processor 172 is also used to: being sent by R-T unit 173 to terminal device and is matched confidence Breath, the configuration information includes the sequential relationship of the uplink signal and the downlink signal.

In other embodiments, memory 171 is for storing computer program；Processor 172 calls the computer journey Sequence, when computer program is performed, for performing the following operations: downlink letter is sent to terminal device by R-T unit 173 Number；Uplink signal is received from the terminal device by R-T unit 173；It is connect by R-T unit 173 from the terminal device Temporal information is received, the temporal information includes the time of reception of the downlink signal or the sending instant of the uplink signal；Root According to the sequential relationship of the uplink signal and the downlink signal, the transmission pre-set time of the terminal device, determine it is described under The incidence relation of the sending instant of the time of reception of row signal and the uplink signal；According to the time of reception of the downlink signal With the transmission of the incidence relation of the sending instant of the uplink signal, the time of reception of the downlink signal or the uplink signal Moment, the sending instant of the downlink signal, the uplink signal the time of reception, determine that the clock of the terminal device is inclined Difference；The clock jitter of the terminal device is sent to the terminal device by R-T unit 173.

Further, processor 172 is also used to: sending configuration information, institute to the terminal device by R-T unit 173 State the sequential relationship that configuration information includes the uplink signal and the downlink signal.

The network equipment of embodiment illustrated in fig. 17 can be used for executing the technical solution of above method embodiment, realization principle Similar with technical effect, details are not described herein again.

Figure 18 is the structural schematic diagram of another network equipment provided by the embodiments of the present application.The network equipment specifically can be with It is base station, as shown in figure 18, which includes: antenna 180, radio-frequency unit 190, base band device 200.Antenna 180 and radio frequency fill Set 190 connections.In the upstream direction, radio-frequency unit 190 passes through the information that 180 receiving terminal apparatus of antenna is sent, and terminal is set The information that preparation is sent is sent to base band device 200 and is handled.In the downstream direction, letter of the base band device 200 to terminal device Breath is handled, and is sent to radio-frequency unit 190, radio-frequency unit 190 information of terminal device is handled after by antenna 180 are sent to terminal device.

The above communication device can be located at base band device 200, and in one implementation, the above modules pass through processing element The form of scheduler program is realized, such as base band device 200 includes processing element 201 and memory element 202, and processing element 201 is adjusted The program stored with memory element 202, to execute the method in above method embodiment.In addition, the base band device 200 can be with Including interface 203, for 190 interactive information of radio-frequency unit, which is, for example, common public radio interface (common Public radio interface, CPRI).

In another implementation, the above module can be arranged to implement one or more processing of above method Element, these processing elements are set on base band device 200, and processing element here can be integrated circuit, such as: one or Multiple ASIC, or, one or more DSP, or, one or more FPGA etc..These integrated circuits can integrate together, structure At chip.

For example, the above modules can integrate together, with the shape of system on chip (system-on-a-chip, SOC) Formula is realized, for example, base band device 200 includes SOC chip, for realizing above method.It can integrate processing element in the chip 201 and memory element 202, called by processing element 201 form of the program of the storage of memory element 202 realize above method or The function of the above modules；Alternatively, can integrate at least one integrated circuit in the chip, for realizing above method or with The function of upper modules；Alternatively, processing element caller can be passed through in conjunction with implementation above mode, the function of part of module Form realize that the function of part of module realized by way of integrated circuit.

Regardless of which kind of mode used, in short, the above communication device includes at least one processing element, memory element and communication Interface, wherein at least one processing element is for executing method provided by above method embodiment.Processing element can be with A kind of mode: i.e. the mode of the program of execution memory element storage some or all of executes in above method embodiment step； It can also be in the second: more than being executed in such a way that the integrated logic circuit of the hardware in processing element combines instruction Step some or all of in embodiment of the method；It is of course also possible to execute in conjunction with first way and the second way with top The method that method embodiment provides.

Here the same above description of processing element can be general processor, such as central processing unit (Central Processing Unit, CPU), it can also be the one or more integrated circuits for being configured to implement above method, such as: one A or multiple specific integrated circuits (Application Specific Integrated Circuit, ASIC), or, one or Multi-microprocessor (digital singnal processor, DSP), or, one or more field programmable gate array (Field Programmable Gate Array, FPGA) etc..Memory element can be a memory, be also possible to multiple The general designation of memory element.

In addition, the embodiment of the present application also provides a kind of computer readable storage medium, in the computer readable storage medium It is stored with computer program, when run on a computer, so that computer executes clock described in above-described embodiment and synchronizes Method.

In addition, the embodiment of the present application also provides a kind of computer program product, which includes computer Program, when run on a computer, so that computer executes clock synchronizing method described in above-described embodiment.

In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program Product includes one or more computer instructions.When loading on computers and executing the computer program instructions, all or It partly generates according to process described herein or function.The computer can be general purpose computer, special purpose computer, meter Calculation machine network or other programmable devices.The computer instruction may be stored in a computer readable storage medium, or It is transmitted from a computer readable storage medium to another computer readable storage medium, for example, the computer instruction can To pass through wired (such as coaxial cable, optical fiber, digital subscriber from a web-site, computer, server or data center Line) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or data center into Row transmission.The computer readable storage medium can be any usable medium or include one that computer can access Or the data storage devices such as integrated server, data center of multiple usable mediums.The usable medium can be magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk Solid State Disk) etc..

Claims

1. a kind of clock synchronizing method characterized by comprising

Terminal device from the network equipment receive first time information, the first time information be used to indicate reference time point when Between information；

The terminal device receives downlink signal from the network equipment；

The terminal device sends uplink signal to the network equipment；

The terminal device receives the second temporal information from the network equipment, and second temporal information is for determining the net Network equipment receives the time of reception of the uplink signal；

The terminal device is determined according to the sequential relationship of the reference time point, the uplink signal and the downlink signal The sending instant of the downlink signal；

The terminal device is believed according to the sending instant of the downlink signal, the time of reception of the downlink signal, the uplink Number sending instant, the uplink signal the time of reception, determine the clock jitter of the terminal device.

2. the method according to claim 1, wherein the sequential relationship of the uplink signal and the downlink signal The offset relative to reference time point of offset, the uplink signal for including: the downlink signal relative to reference time point Amount.

3. according to the method described in claim 2, it is characterized in that, the terminal device is according to the reference time point, described The sequential relationship of uplink signal and the downlink signal determines the sending instant of the downlink signal, comprising:

The terminal device is determined according to the reference time point, offset of the downlink signal relative to reference time point The sending instant of the downlink signal.

4. according to the method described in claim 3, it is characterized in that, offset of the downlink signal relative to reference time point Include:

5. according to the described in any item methods of claim 2-4, which is characterized in that second temporal information includes the network Equipment receives the time of reception of the uplink signal.

6. according to the described in any item methods of claim 2-4, which is characterized in that second temporal information includes the network Equipment starts to receive the initial time of the uplink signal and the network equipment receives the time of reception of the uplink signal Time difference；

The method also includes:

The terminal device is according to the reference time point, the uplink signal relative to the offset of reference time point and described Time difference determines the time of reception when network equipment receives the uplink signal.

7. according to the method described in claim 6, it is characterized in that, offset of the uplink signal relative to reference time point Include:

8. the method according to claim 1, wherein the sequential relationship of the uplink signal and the downlink signal Include: the uplink signal and the downlink signal sending cycle, the uplink signal it is inclined relative to the downlink signal The initial position of shifting amount, the uplink signal or the downlink signal relative to the reference time point.

9. according to the method described in claim 8, it is characterized in that, the terminal device is according to the reference time point, described The sequential relationship of uplink signal and the downlink signal determines the sending instant of the downlink signal, comprising:

Start bit of the terminal device according to the reference time point, the downlink signal relative to the reference time point It sets and the sending cycle of the downlink signal, determines the sending instant of the downlink signal；Or

Start bit of the terminal device according to the reference time point, the uplink signal relative to the reference time point It sets, the offset of the sending cycle of the uplink signal and the uplink signal relative to the downlink signal, described in determination The sending instant of downlink signal.

10. -9 described in any item methods according to claim 1, which is characterized in that the terminal device is from the network equipment Before reception downlink signal, further includes:

11. according to the method described in claim 10, it is characterized in that, the configuration information further include: the first time letter The sending cycle of breath.

12. according to the method for claim 11, which is characterized in that the configuration information further include: the first time letter Cease the temporal information of corresponding reference time point in current sending cycle.

13. a kind of clock synchronizing method characterized by comprising

The network equipment to terminal device send first time information, the first time information be used to indicate reference time point when Between information；

The network equipment sends downlink signal to the terminal device；

The network equipment receives uplink signal from the terminal device；

The network equipment sends the second temporal information to the terminal device, and second temporal information is for determining the net Network equipment receives the time of reception of the uplink signal.

14. according to the method for claim 13, which is characterized in that the network equipment is sent at the first time to terminal device After information, further includes:

The network equipment sends configuration information to terminal device, and the configuration information includes the uplink signal and the downlink The sequential relationship of signal.

15. according to the method for claim 14, which is characterized in that the timing of the uplink signal and the downlink signal is closed System includes: that the downlink signal is inclined relative to reference time point relative to the offset of reference time point, the uplink signal Shifting amount.

16. according to the method for claim 14, which is characterized in that the timing of the uplink signal and the downlink signal is closed System includes: the sending cycle of the uplink signal and the downlink signal, the uplink signal relative to the downlink signal The initial position of offset, the uplink signal or the downlink signal relative to the reference time point.

17. the described in any item methods of 3-16 according to claim 1, which is characterized in that second temporal information includes described The network equipment receives the time of reception of the uplink signal；Or

Second temporal information includes that the network equipment starts to receive the initial time of the uplink signal and the network Equipment receives the time difference of the time of reception of the uplink signal.

18. a kind of clock synchronizing method characterized by comprising

The network equipment sends downlink signal to terminal device；

The network equipment receives uplink signal from the terminal device；

For the network equipment from the terminal device receiving time information, the temporal information includes the reception of the downlink signal The sending instant of moment or the uplink signal；

The network equipment is mentioned according to the transmission of the sequential relationship of the uplink signal and the downlink signal, the terminal device The preceding time determines the incidence relation of the time of reception of the downlink signal and the sending instant of the uplink signal；

The network equipment according to the incidence relation of the time of reception of the downlink signal and the sending instant of the uplink signal, The sending instant of the time of reception of the downlink signal or the uplink signal, the sending instant of the downlink signal, it is described on The time of reception of row signal determines the clock jitter of the terminal device；

19. according to the method for claim 18, which is characterized in that the timing of the uplink signal and the downlink signal is closed System includes: the corresponding radio frame number of time-domain resource, subframe numbers or the timeslot number of the uplink signal, the time domain of the downlink signal The corresponding radio frame number of resource, subframe numbers or timeslot number.

20. according to the method for claim 18, which is characterized in that the timing of the uplink signal and the downlink signal is closed System includes: the sending cycle of the uplink signal and the downlink signal, the uplink signal relative to the downlink signal The initial position of offset, the uplink signal or the downlink signal.

21. the described in any item methods of 8-20 according to claim 1, which is characterized in that the network equipment is sent out to terminal device Before sending downlink signal, further includes:

The network equipment sends configuration information to the terminal device, and the configuration information includes the uplink signal and described The sequential relationship of downlink signal.

22. a kind of clock synchronizing method characterized by comprising

Terminal device receives downlink signal from the network equipment；

The terminal device sends uplink signal to the network equipment；

For the terminal device to the network equipment transmission time information, the temporal information includes the reception of the downlink signal The sending instant of moment or the uplink signal；

23. according to the method for claim 22, which is characterized in that the terminal device receives downlink signal from the network equipment Before, further includes:

The terminal device receives configuration information from the network equipment, and the configuration information includes the uplink signal and the downlink The sequential relationship of signal.

24. a kind of communication device characterized by comprising

Receiving module, for receiving first time information from the network equipment, the first time information is used to indicate the reference time The temporal information of point；Downlink signal is received from the network equipment；

Sending module, for sending uplink signal to the network equipment；

The receiving module is also used to receive the second temporal information from the network equipment, and second temporal information is for determining The network equipment receives the time of reception of the uplink signal；

Determining module is determined for the sequential relationship according to the reference time point, the uplink signal and the downlink signal The sending instant of the downlink signal；According to the sending instant of the downlink signal, time of reception, described of the downlink signal The time of reception of the sending instant of uplink signal, the uplink signal determines the clock jitter of the communication device.

25. communication device according to claim 24, which is characterized in that the uplink signal and the downlink signal when Order relation includes: the downlink signal relative to the offset of reference time point, the uplink signal relative to reference time point Offset.

26. communication device according to claim 25, which is characterized in that the determining module is according to the reference time The sequential relationship of point, the uplink signal and the downlink signal determines the sending instant of the downlink signal, is specifically used for:

According to the reference time point, offset of the downlink signal relative to reference time point, the downlink signal is determined Sending instant.

27. the communication device according to claim 25 or 26, which is characterized in that second temporal information includes the net Network equipment receives the time of reception of the uplink signal.

28. the communication device according to claim 25 or 26, which is characterized in that second temporal information includes the net Network equipment starts to receive the initial time of the uplink signal and when the network equipment receives the reception of the uplink signal The time difference at quarter；

The determining module is also used to: according to the reference time point, offset of the uplink signal relative to reference time point Amount and the time difference, determine the time of reception when network equipment receives the uplink signal.

29. communication device according to claim 24, which is characterized in that the uplink signal and the downlink signal when Order relation includes: that the sending cycle of the uplink signal and the downlink signal, the uplink signal are believed relative to the downlink Number initial position relative to the reference time point of offset, the uplink signal or the downlink signal.

30. communication device according to claim 29, which is characterized in that the determining module is according to the reference time The sequential relationship of point, the uplink signal and the downlink signal is specific to use when determining the sending instant of the downlink signal In:

According to the reference time point, the downlink signal relative to the reference time point initial position and it is described under The sending cycle of row signal determines the sending instant of the downlink signal；Or

Believed according to the reference time point, the uplink signal relative to the initial position of the reference time point, the uplink Number offset relative to the downlink signal of sending cycle and the uplink signal, determine the hair of the downlink signal Send the moment.

31. according to the described in any item communication devices of claim 24-30, which is characterized in that the receiving module is also used to: from The network equipment receives configuration information, and the configuration information includes the timing pass of the uplink signal and the downlink signal System.

32. a kind of communication device characterized by comprising

Sending module, for sending first time information to terminal device, the first time information is used to indicate the reference time The temporal information of point；Downlink signal is sent to the terminal device；

Receiving module, for receiving uplink signal from the terminal device；

The sending module is also used to: Xiang Suoshu terminal device sends the second temporal information, and second temporal information is for true The fixed communication device receives the time of reception of the uplink signal.

33. communication device according to claim 32, which is characterized in that the sending module is also used to:

Configuration information is sent to terminal device, the configuration information includes the timing pass of the uplink signal and the downlink signal System.

34. a kind of communication device characterized by comprising

Sending module, for sending downlink signal to terminal device；

Receiving module, for receiving uplink signal from the terminal device；From the terminal device receiving time information, when described Between information include the time of reception of the downlink signal or the sending instant of the uplink signal；

Determining module, for the transmission according to the sequential relationship of the uplink signal and the downlink signal, the terminal device Pre-set time determines the incidence relation of the time of reception of the downlink signal and the sending instant of the uplink signal；According to institute State the incidence relation of the time of reception of downlink signal and the sending instant of the uplink signal, the time of reception of the downlink signal Or the time of reception of the sending instant of the uplink signal, the sending instant of the downlink signal, the uplink signal, determine institute State the clock jitter of terminal device；

35. communication device according to claim 34, which is characterized in that the sending module is also used to:

Send configuration information to the terminal device, the configuration information include the uplink signal and the downlink signal when Order relation.

36. a kind of communication device characterized by comprising

Receiving module, for receiving downlink signal from the network equipment；

Sending module, for sending uplink signal to the network equipment；To the network equipment transmission time information, when described Between information include the time of reception of the downlink signal or the sending instant of the uplink signal；

37. communication device according to claim 36, which is characterized in that the receiving module is also used to:

Configuration information is received from the network equipment, the configuration information includes the timing pass of the uplink signal and the downlink signal System.

38. a kind of communication equipment characterized by comprising

Interface & processor, the interface and processor coupling；

The processor requires the described in any item methods in 1-12,22,23 for perform claim.

39. a kind of communication equipment characterized by comprising

Interface & processor, the interface and processor coupling；

The processor requires the described in any item methods of 13-21 for perform claim.

40. a kind of computer readable storage medium, which is characterized in that be stored with computer in the computer readable storage medium Program, when run on a computer, so that computer executes such as the described in any item methods of claim 1-23.