CN114270773B - Method and device for determining reference clock, terminal equipment and network equipment - Google Patents
Method and device for determining reference clock, terminal equipment and network equipment Download PDFInfo
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- H—ELECTRICITY
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Abstract
The embodiment of the application provides a method and a device for determining a reference clock, terminal equipment and network equipment, wherein the method comprises the following steps: the network equipment receives a first request message sent by the terminal equipment, wherein the first request message is used for requesting the network equipment to send first reference clock information; the network device sends the first reference clock information to the terminal device.
Description
Technical Field
The embodiment of the application relates to the technical field of mobile communication, in particular to a method and a device for determining a reference clock, terminal equipment and network equipment.
Background
High precision reference clock information enables a high degree of time synchronization between the terminal device and the network side, which is crucial for time-sensitive services. At present, high-precision reference clock information can be sent to terminal equipment by a network side in a broadcasting mode, however, the network side cannot adaptively broadcast the high-precision reference clock information according to the requirements of the terminal equipment, so that the high-precision reference clock information occupies more air interface resources.
Disclosure of Invention
The embodiment of the application provides a method and a device for determining a reference clock, terminal equipment and network equipment.
The method for determining the reference clock provided by the embodiment of the application comprises the following steps:
the network equipment receives a first request message sent by the terminal equipment, wherein the first request message is used for requesting the network equipment to send first reference clock information;
the network device sends the first reference clock information to the terminal device.
The method for determining the reference clock provided by the embodiment of the application comprises the following steps:
the method comprises the steps that terminal equipment sends a first request message to network equipment, wherein the first request message is used for requesting the network equipment to send first reference clock information;
and the terminal equipment receives the first reference clock information sent by the network equipment.
The reference clock determining device provided by the embodiment of the application comprises:
a receiving unit, configured to receive a first request message sent by a terminal device, where the first request message is used to request the network device to send first reference clock information;
and the sending unit is used for sending the first reference clock information to the terminal equipment.
The reference clock determining device provided by the embodiment of the application comprises:
A sending unit, configured to send a first request message to a network device, where the first request message is used to request the network device to send first reference clock information;
and the receiving unit is used for receiving the first reference clock information sent by the network equipment.
The terminal equipment provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method for determining the reference clock.
The network device provided by the embodiment of the application comprises a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory and executing the method for determining the reference clock.
The chip provided by the embodiment of the application is used for realizing the method for determining the reference clock.
Specifically, the chip includes: and a processor for calling and running the computer program from the memory, so that the device mounted with the chip executes the above-mentioned reference clock determining method.
The computer readable storage medium provided in the embodiments of the present application is configured to store a computer program, where the computer program causes a computer to execute the above-mentioned method for determining a reference clock.
The computer program product provided by the embodiment of the application comprises computer program instructions, wherein the computer program instructions enable a computer to execute the method for determining the reference clock.
The computer program provided in the embodiments of the present application, when running on a computer, causes the computer to execute the above-described method for determining a reference clock.
By the technical scheme, the network equipment can determine whether to send the first reference clock information (namely high-precision reference clock information) based on the request of the terminal equipment, so that the first reference clock information is not broadcasted when the terminal equipment does not support or uses the high-precision reference clock related characteristics, and the air interface resource is saved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
fig. 1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application;
fig. 2 is a network architecture diagram of a 5G system as a TSN bridge according to an embodiment of the present application;
FIG. 3 is a schematic diagram of time synchronization accuracy provided by an embodiment of the present application;
Fig. 4 is a flowchart of a method for determining a reference clock according to an embodiment of the present application;
FIG. 5-1 is a flow chart of an example one provided by an embodiment of the present application;
FIG. 5-2 is a flow chart of an example two provided by an embodiment of the present application;
fig. 6 is a schematic diagram of the structural components of a determining device for a reference clock according to an embodiment of the present application;
fig. 7 is a schematic diagram ii of the structural composition of the determining device for a reference clock according to the embodiment of the present application;
fig. 8 is a schematic structural diagram of a communication device provided in an embodiment of the present application;
FIG. 9 is a schematic block diagram of a chip of an embodiment of the present application;
fig. 10 is a schematic block diagram of a communication system provided in an embodiment of the present application.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The technical solution of the embodiment of the application can be applied to various communication systems, for example: long term evolution (Long Term Evolution, LTE) systems, LTE frequency division duplex (Frequency Division Duplex, FDD) systems, LTE time division duplex (Time Division Duplex, TDD), systems, 5G communication systems, future communication systems, or the like.
Exemplary, a communication system 100 to which embodiments of the present application apply is shown in fig. 1. The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Alternatively, the network device 110 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in the LTE system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future communication system, etc.
The communication system 100 further includes at least one terminal 120 located within the coverage area of the network device 110. "terminal" as used herein includes, but is not limited to, connection via wireline, such as via public-switched telephone network (Public Switched Telephone Networks, PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, direct cable connection; and/or another data connection/network; and/or via a wireless interface, e.g., for a cellular network, a wireless local area network (Wireless Local Area Network, WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and/or means of the other terminal arranged to receive/transmit communication signals; and/or internet of things (Internet of Things, ioT) devices. Terminals arranged to communicate over a wireless interface may be referred to as "wireless communication terminals", "wireless terminals" or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellites or cellular telephones; a personal communications system (Personal Communications System, PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; a PDA that can include a radiotelephone, pager, internet/intranet access, web browser, organizer, calendar, and/or a global positioning system (Global Positioning System, GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal in a 5G network or a terminal in a future evolved PLMN, etc.
Alternatively, direct to Device (D2D) communication may be performed between the terminals 120.
Alternatively, the 5G communication system or 5G network may also be referred to as a New Radio (NR) system or NR network.
Fig. 1 illustrates one network device and two terminals, alternatively, the communication system 100 may include multiple network devices and each network device may include other numbers of terminals within a coverage area, which is not limited in this embodiment.
Optionally, the communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.
It should be understood that a device having a communication function in a network/system in an embodiment of the present application may be referred to as a communication device. Taking the communication system 100 shown in fig. 1 as an example, the communication device may include a network device 110 and a terminal 120 with communication functions, where the network device 110 and the terminal 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.
It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
In order to facilitate understanding of the technical solutions of the embodiments of the present application, the following describes the technical solutions related to the embodiments of the present application.
The 5G industrial Internet of things (Industrial Internet of Things, IIoT) supports industrial automation (Factory Automation), transmission automation (Transport Automation), intelligent power (Intelligent Electrical Power) and other businesses are transmitted in the 5G system. IIoT introduces the concept of time sensitive networks (Time Sensitive Networking, TSN) or TSC based on its latency and reliability transmission requirements. As shown in fig. 2, in the TSN, the 5G system (5G system,5 gs) will serve the TSN network and traffic as a TSN bridge. Based on this, NR systems need to provide lower latency guarantees and higher clock synchronization accuracy so that the operation and succession accuracy of each point of mechanical operation is time-critical when industrial automation traffic is transmitted in 5G networks.
Time synchronization accuracy of TSN
Based on the requirement of TSN service transmission, when TSN service is transmitted in 5G, the requirement of time synchronization precision of 1us needs to be met. Referring to fig. 3, from the air interface, the time synchronization accuracy requirement is related to the time synchronization accuracy (i.e., accuracy) notified by the network and the time synchronization accuracy error (i.e., Δ) at the terminal device side, which is related to many factors such as propagation loss, device limitation, etc.
The time synchronization information and the time synchronization accuracy information notified by the network side are contained in a time reference information unit (TimeReferenceInfo IE).
In some scenes, propagation delay compensation is needed, and the time synchronization precision error of the physical layer can be within a required range, so that the time synchronization precision requirement of 1us is met when TSN service is transmitted in 5G. For example, a method for realizing transmission delay compensation in a scene with a distance of more than 200m needs to be considered.
In a communication system, a Timing Advance (TA) is generally used to compensate for propagation delay. The terminal equipment has different TA acquisition modes in an idle state (or inactive state) and a connection state. When the terminal equipment is in an idle state or a non-activated state, time synchronization with a network side is not maintained, so that the terminal equipment needs to acquire a TA in an initial access process through a random access process, and further, synchronous calibration is carried out through the TA. In the connected state, the terminal device acquires the TA according to a TA command (TAC) sent by the network, and further performs synchronous calibration through the TA.
Based on TAC or RA procedure, the uplink frame transmission advance is (N TA +N TAoffset )×T c . Wherein N is TA Associated with the TAC or the indicated TAC carried in the random access response. Given in the TAC is index information of timing advance adjustment. For the scenario of carrying TAC in random access response, N TA ＝Tx·16·64/2 μ Wherein T is A TAC, which takes the value: 0,1,2,...,3846. For the scenario where TAC is indicated by a dedicated TAC MAC CE, N TA_new ＝N TA_old +(T A ＝31)·16·64/2 μ Wherein T is A TAC, which takes the value: 0,1,2,...,63.
In addition, T c T is the minimum time unit of the physical layer c ＝1/(Δf max ·N f ) Wherein Δf max ＝480·10 3 Hz，N f ＝4096。N TAoffset The values of (2) are shown in Table 1 below.
TABLE 1
RAN4 makes requirements on the accuracy of TA adjustment, with minimum requirements as set forth in table 2 below.
TABLE 2
IIoT has two possible propagation delay compensation modes, one is compensated by the network and one is compensated by the terminal device. The method for compensating the network comprises the step that the time synchronization information received by the terminal equipment contains the time synchronization information after the network compensates the propagation delay. It should be noted that, the time synchronization information in the embodiment of the present application may also be referred to as reference clock information. The high-precision reference clock information occupies more air interface resources, and when no terminal equipment supports or uses the high-precision clock-related characteristic in one cell, the network side can consider not broadcasting the reference clock information. Therefore, the following technical solutions of the embodiments of the present application are provided, which enable the network device to determine whether to send high-precision reference clock information based on the request of the terminal device.
Fig. 4 is a flowchart of a method for determining a reference clock according to an embodiment of the present application, as shown in fig. 4, where the method for determining a reference clock includes the following steps:
step 401: the terminal equipment sends a first request message to the network equipment, and the network equipment receives the first request message sent by the terminal equipment, wherein the first request message is used for requesting the network equipment to send first reference clock information.
In the embodiment of the present application, the network device may be a base station, for example, a gNB.
In this embodiment of the present application, in order to obtain the first reference clock information, the terminal device sends a first request message to the network device, where the first request message is used to request the network device to send the first reference clock information.
In an alternative embodiment, the first reference clock information includes at least one of: clock information corresponding to TSN, clock information corresponding to TCS, high precision clock information (e.g. clock information with 10ns precision). It should be noted that, the reference clock information referred to in the embodiments of the present application may also be referred to as time synchronization information.
Step 402: the network equipment sends the first reference clock information to the terminal equipment, and the terminal equipment receives the first reference clock information sent by the network equipment.
In this embodiment of the present application, the network device may send the first reference clock information by using a system broadcast message, and specifically, the network device sends a first system information block (System Information Block, SIB) to the terminal device, where the first SIB carries the first reference clock information.
In an embodiment, the first SIB is an existing SIB, and the first reference clock information is carried in the existing SIB, so that broadcasting of the first reference clock information is achieved. In another alternative embodiment, the first SIB is a newly defined SIB dedicated to transmitting the first reference clock information.
In an alternative embodiment of the present application, the content of the first reference clock information may refer to table 3 below.
TABLE 3 Table 3
The scheme realizes that the network equipment transmits the first reference clock information based on the request of the terminal equipment, and the transmission mode is combined with the transmission mode of the on-demand SI.
In this embodiment of the present application, the first request message is MSG1 or MSG3 in a random access process. The following describes the technical solutions of the embodiments of the present application in detail with reference to MSG1 and MSG3.
The first request message is message MSG1.
In this embodiment of the present application, the terminal device sends MSG1 to the network device on a first PRACH resource, and the network device receives MSG1 sent by the terminal device on a first physical random access channel (Physical Random Access Channel, PRACH) resource, where the first PRACH resource has an association relationship with the first reference clock information.
Here, the association between the first PRACH resource and the first reference clock information means that: the first PRACH resource is a resource dedicated to requesting the first reference clock information, or the first PRACH resource is a resource dedicated to transmitting MSG1 requesting the first reference clock information. It is understood that the first PRACH resource is a specific PRACH resource for requesting the first reference clock information.
In an optional implementation manner, the first PRACH resource is configured by the network device, specifically, the network device sends first configuration information to the terminal device, and the terminal device receives the first configuration information sent by the network device, where the first configuration information is used to determine the configuration of the first PRACH resource.
Further, the first configuration information includes at least one of: frequency domain resource information, time domain resource information, code domain resource information, and space domain resource information.
In this embodiment of the present application, the network device may stop sending the first reference clock information to the terminal device in some triggering manner. As described in detail below.
1) Mode one
And after the network equipment receives the MSG1 sent by the terminal equipment on the first PRACH resource again, stopping sending the first reference clock information to the terminal equipment.
2) Mode two
After the network equipment receives MSG1 sent by the terminal equipment on the first PRACH resource, starting a first timer; the network equipment sends the first reference clock information to the terminal equipment during the operation of the first timer; and if the first timer is overtime, the network equipment stops sending the first reference clock information to the terminal equipment.
In an alternative embodiment, the duration of the first timer is predefined; or the duration of the first timer is related to the first PRACH resource.
The first request message is an MSG3 or dedicated radio resource control (Radio Resource Control, RRC) message or a medium access control (Media Access Control, MAC) message.
In this embodiment of the present application, the terminal device sends a first request message to the network device, where the network device receives the first request message sent by the terminal device, where the first request message carries first indication information, and the first indication information is used to indicate the network device to send the first reference clock information.
In this embodiment of the present application, the network device may stop sending the first reference clock information to the terminal device in some triggering manner. As described in detail below.
1) The network equipment receives a first request message sent by the terminal equipment again, wherein the first request message carries second indication information, and the second indication information is used for indicating the network equipment to stop sending the first reference clock information or indicating the network equipment to switch from sending the first reference clock information to sending the second reference clock information; the network device stops sending the first reference clock information to the terminal device.
2) The network equipment receives a first request message sent by the terminal equipment again, wherein the first request message carries the first indication information; the network device stops sending the first reference clock information to the terminal device.
3) After the network equipment receives the first request message sent by the terminal equipment, starting a second timer; the network equipment sends the first reference clock information to the terminal equipment during the operation of the second timer; and if the second timer is overtime, the network equipment stops sending the first reference clock information to the terminal equipment.
In an alternative embodiment, the duration of the second timer is predefined; or the duration of the second timer is carried in the first request message.
The scheme in which the terminal device requests the first reference clock information through the MSG1 or the MSG3 is described below with reference to a specific example.
Example one
In this example, the terminal device transmits MSG1 using a specific PRACH resource (i.e., a first PRACH resource) to indicate that specific reference clock information (i.e., first reference clock information) is requested. Referring to fig. 5-1, the process comprises the following steps:
step 0, the base station sends configuration information of the first PRACH resource to the terminal equipment.
Specifically, the base station configures configuration information of a first PRACH resource for the terminal device to request first reference clock information for the terminal device. Here, the configuration information of the first PRACH resource includes at least one of: frequency domain resource information, time domain resource information, code domain resource information, and space domain resource information. Optionally, the first PRACH resource may also include a specific preamble resource. Wherein spatial domain resource information, such as beam information (SSB information), spatial hierarchy information, and the like. The frequency domain resource information may be specific physical resource block (Physical Resource Block, PRB) information or specific bandwidth Part (BWP) information. The time domain resource information includes a designated slot resource or symbol resource, and the like.
Step 1, a terminal device adopts a first PRACH resource to send MSG1.
Specifically, if the terminal device supporting or wanting to use the first reference clock information correlation characteristic finds that the first reference clock information is not broadcast in the current cell, the terminal device initiates a random access procedure by adopting the first PRACH resource configured in step 0, that is, sends MSG1.
Step 2, the base station sends first reference clock information to the terminal equipment.
Specifically, after receiving the MSG1 sent by the terminal device, the base station determines that the terminal device needs first reference clock information according to a first PRACH resource where the MSG1 is located. In this example, the base station may transmit the first reference clock information through MSG 2.
In an alternative embodiment, if the first reference clock information is contained in a particular SIB, the base station starts transmitting this particular SIB. In another alternative embodiment, the base station transmits the first reference clock information contained in the existing SIB.
Further, the base station may be informed in the same way if the terminal device no longer needs the first reference clock information. Specifically, the terminal device transmits MSG1 using the same first PRACH resource as in the foregoing step 1 or transmits MSG1 using the first PRACH resource configured in step 0. After the base station receives the MSG1 sent by the terminal device, if no other user requests the first reference clock information, the base station stops sending the first reference clock information. Or in step 1, after receiving MSG1 sent by the terminal equipment, the base station starts a first timer, and sends first reference clock information during the operation of the first timer; and if the first timer is overtime, stopping sending the first reference clock information. Here, the duration of the first timer may be defined in a standard or bound with the first PRACH resource in step 0.
Example two
In this example, the terminal device carries indication information (i.e., first indication information) requesting the network device to transmit the first reference clock information in MSG3, to indicate that the specific reference clock information (i.e., first reference clock information) is requested. Referring to fig. 5-2, the process comprises the following steps:
step 1, a terminal device sends MSG1 to a base station.
Step 2, the base station sends MSG2 to the terminal equipment.
And step 3, the terminal equipment sends MSG3 to the base station.
Here, the MSG3 carries first indication information, where the first indication information is used to indicate the request base station to send the first reference clock information. Specifically, the first indication information refers to table 4 below.
TABLE 4 Table 4
The content of the "Requested-granularity" line in table 4 represents the first indication information, and the optional parameters of the "Requested-granularity" are not limited to {10ms,10ns }, but may be { normal, finfet }, alternatively, the synchronization precision corresponding to normal is 10ms, and the synchronization precision corresponding to finfet is 10ns.
And step 4, the base station transmits the MSG4 to the terminal equipment.
Specifically, after receiving the MSG3 sent by the terminal device, the base station determines that the terminal device needs first reference clock information according to first indication information in the MSG3. In this example, the base station may transmit the first reference clock information through MSG4.
Further, the base station may be informed in the same way if the terminal device no longer needs the first reference clock information. Specifically, after the terminal device indicates that the base station receives the MSG3 of the terminal device by using the first indication information in the MSG3, if no other user requests the first reference clock information, the base station stops sending the first reference clock information. Or, the terminal device carries indication information (i.e. second indication information) for instructing the base station to stop sending the first reference clock information or switch to other reference clock information in the MSG3, so as to trigger the base station to stop sending the first reference clock information. Or when the terminal equipment sends MSG3 to request the base station to send the first reference clock information, the MSG3 carries the duration information of the first timer, the base station starts the first timer after receiving MSG3, and the first reference clock information is sent during the operation period of the first timer; and if the first timer is overtime, stopping sending the first reference clock information. Alternatively, if the terminal device does not indicate the duration information of the first timer in the MSG3, the base station may adopt a value predefined in the standard as the duration information of the first timer.
It should be noted that the solution of this example may also be adapted to a scenario in which the terminal device is in a connected state, specifically, the terminal device requests or stops the transmission of the first reference clock information by sending a dedicated RRC message or a MAC message to the base station.
Fig. 6 is a schematic structural diagram of a determining device for a reference clock according to an embodiment of the present application, which is applied to a network device, as shown in fig. 6, where the determining device for a reference clock includes:
a receiving unit 601, configured to receive a first request message sent by a terminal device, where the first request message is used to request the network device to send first reference clock information;
a transmitting unit 602, configured to transmit the first reference clock information to the terminal device.
In an alternative embodiment, the first request message is MSG1.
In an optional implementation manner, the receiving unit 601 is configured to receive MSG1 sent by the terminal device on a first PRACH resource, where the first PRACH resource has an association relationship with the first reference clock information.
In an optional embodiment, the sending unit 602 is further configured to send first configuration information to the terminal device, where the first configuration information is used to determine a configuration of the first PRACH resource.
In an alternative embodiment, the first configuration information includes at least one of: frequency domain resource information, time domain resource information, code domain resource information, and space domain resource information.
In an alternative embodiment, if the receiving unit 601 receives the MSG1 sent by the terminal device on the first PRACH resource again, the sending unit 602 stops sending the first reference clock information to the terminal device.
In an alternative embodiment, after the receiving unit 601 receives the MSG1 sent by the terminal device on the first PRACH resource, a first timer is started;
the sending unit 602 sends the first reference clock information to the terminal device during the operation of the first timer; and if the first timer is overtime, stopping sending the first reference clock information to the terminal equipment.
In an alternative embodiment, the duration of the first timer is predefined; or,
the duration of the first timer is related to the first PRACH resource.
In an alternative embodiment, the first request message is an MSG3 or a dedicated RRC message or a MAC message.
In an optional implementation manner, the receiving unit 601 is configured to receive a first request message sent by the terminal device, where the first request message carries first indication information, and the first indication information is used to instruct the network device to send the first reference clock information.
In an optional embodiment, if the receiving unit 601 receives, again, the first request message sent by the terminal device, where the first request message carries second instruction information, where the second instruction information is used to instruct the network device to stop sending the first reference clock information or instruct the network device to switch from sending the first reference clock information to sending the second reference clock information, the sending unit 602 stops sending the first reference clock information to the terminal device.
In an alternative embodiment, if the receiving unit 601 receives the first request message sent by the terminal device again, where the first request message carries the first indication information, the sending unit 602 stops sending the first reference clock information to the terminal device.
In an alternative embodiment, after the receiving unit 601 receives the first request message sent by the terminal device, a second timer is started;
The sending unit 602 sends the first reference clock information to the terminal device during the second timer running; and if the second timer is overtime, stopping sending the first reference clock information to the terminal equipment.
In an alternative embodiment, the duration of the second timer is predefined; or,
the duration of the second timer is carried in the first request message.
In an alternative embodiment, the sending unit 602 is configured to send a first SIB to the terminal device, where the first SIB carries the first reference clock information.
In an alternative embodiment, the first reference clock information includes at least one of: clock information corresponding to TSN, clock information corresponding to TCS, high-precision clock information.
It will be appreciated by those skilled in the art that the above description of the determination device of the reference clock of the embodiments of the present application may be understood with reference to the description of the determination method of the reference clock of the embodiments of the present application.
Fig. 7 is a schematic diagram ii of the structural composition of the determining device for a reference clock provided in the embodiment of the present application, which is applied to a terminal device, as shown in fig. 7, where the determining device for a reference clock includes:
A sending unit 701, configured to send a first request message to a network device, where the first request message is used to request the network device to send first reference clock information;
a receiving unit 702, configured to receive the first reference clock information sent by the network device.
In an alternative embodiment, the first request message is MSG1.
In an optional implementation manner, the sending unit 701 is configured to send MSG1 to the network device on a first PRACH resource, where the first PRACH resource has an association relationship with the first reference clock information.
In an optional implementation manner, the receiving unit 702 is further configured to receive first configuration information sent by the network device, where the first configuration information is used to determine a configuration of the first PRACH resource.
In an alternative embodiment, the first configuration information includes at least one of: frequency domain resource information, time domain resource information, code domain resource information, and space domain resource information.
In an alternative embodiment, the first request message is an MSG3 or a dedicated RRC message or a MAC message.
In an optional implementation manner, the sending unit 701 is configured to send a first request message to the network device, where the first request message carries first indication information, and the first indication information is used to instruct the network device to send the first reference clock information.
In an alternative embodiment, the receiving unit 702 is configured to receive a first SIB sent by the network device, where the first SIB carries the first reference clock information.
In an alternative embodiment, the first reference clock information includes at least one of: clock information corresponding to TSN, clock information corresponding to TCS, high-precision clock information.
It will be appreciated by those skilled in the art that the above description of the determination device of the reference clock of the embodiments of the present application may be understood with reference to the description of the determination method of the reference clock of the embodiments of the present application.
Fig. 8 is a schematic structural diagram of a communication device 800 provided in an embodiment of the present application. The communication device may be a terminal device or a network device, and the communication device 800 shown in fig. 8 includes a processor 810, where the processor 810 may call and execute a computer program from a memory to implement the methods in the embodiments of the present application.
Optionally, as shown in fig. 8, the communication device 800 may also include a memory 820. Wherein the processor 810 may call and run a computer program from the memory 820 to implement the methods in embodiments of the present application.
Wherein the memory 820 may be a separate device from the processor 810 or may be integrated into the processor 810.
Optionally, as shown in fig. 8, the communication device 800 may further include a transceiver 830, and the processor 810 may control the transceiver 830 to communicate with other devices, and in particular, may send information or data to other devices, or receive information or data sent by other devices.
Among other things, transceiver 830 may include a transmitter and a receiver. Transceiver 830 may further include antennas, the number of which may be one or more.
Optionally, the communication device 800 may be specifically a network device in the embodiment of the present application, and the communication device 800 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.
Optionally, the communication device 800 may be specifically a mobile terminal/terminal device in the embodiment of the present application, and the communication device 800 may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.
Fig. 9 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 900 shown in fig. 9 includes a processor 910, and the processor 910 may call and execute a computer program from a memory to implement the method in the embodiments of the present application.
Optionally, as shown in fig. 9, the chip 900 may further include a memory 920. Wherein the processor 910 may invoke and run a computer program from the memory 920 to implement the methods in the embodiments of the present application.
Wherein the memory 920 may be a separate device from the processor 910 or may be integrated in the processor 910.
Optionally, the chip 900 may also include an input interface 930. The processor 910 may control the input interface 930 to communicate with other devices or chips, and in particular, may acquire information or data sent by the other devices or chips.
Optionally, the chip 900 may also include an output interface 940. Wherein the processor 910 may control the output interface 940 to communicate with other devices or chips, and in particular, may output information or data to the other devices or chips.
Optionally, the chip may be applied to a network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.
Optionally, the chip may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.
It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.
Fig. 10 is a schematic block diagram of a communication system 1000 provided in an embodiment of the present application. As shown in fig. 10, the communication system 1000 includes a terminal device 1010 and a network device 1020.
The terminal device 1010 may be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 1020 may be used to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.
It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.
It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
It should be understood that the above memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.
Embodiments of the present application also provide a computer-readable storage medium for storing a computer program.
Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.
Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, which is not described herein for brevity.
Embodiments of the present application also provide a computer program product comprising computer program instructions.
Optionally, the computer program product may be applied to a network device in the embodiments of the present application, and the computer program instructions cause the computer to execute corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.
Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.
The embodiment of the application also provides a computer program.
Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.
Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiments of the present application, where the computer program when run on a computer causes the computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, and for brevity, will not be described herein.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (46)
1. A method of determining a reference clock, the method comprising:
the network equipment receives a first request message sent by the terminal equipment, wherein the first request message is used for requesting the network equipment to send first reference clock information; the first request message is a message MSG1; the network device receives a first request message sent by a terminal device, including: the network equipment receives MSG1 sent by the terminal equipment on a first physical random access channel PRACH resource, wherein the first PRACH resource and the first reference clock information have an association relation;
the network equipment sends the first reference clock information to the terminal equipment;
and after the network equipment receives the MSG1 sent by the terminal equipment on the first PRACH resource again, stopping sending the first reference clock information to the terminal equipment.
2. The method of claim 1, wherein the method further comprises:
the network device sends first configuration information to the terminal device, where the first configuration information is used to determine a configuration of the first PRACH resource.
3. The method of claim 2, wherein the first configuration information comprises at least one of: frequency domain resource information, time domain resource information, code domain resource information, and space domain resource information.
4. The method of claim 1, wherein the method further comprises:
after the network equipment receives MSG1 sent by the terminal equipment on the first PRACH resource, starting a first timer;
the network equipment sends the first reference clock information to the terminal equipment during the operation of the first timer; and if the first timer is overtime, the network equipment stops sending the first reference clock information to the terminal equipment.
5. The method of claim 4, wherein,
the duration of the first timer is predefined; or,
the duration of the first timer is related to the first PRACH resource.
6. The method of claim 1, wherein the first request message is an MSG3 or a dedicated radio resource control, RRC, message or a medium access control, MAC, message.
7. The method of claim 6, wherein the network device receiving the first request message sent by the terminal device comprises:
the network equipment receives a first request message sent by the terminal equipment, wherein the first request message carries first indication information, and the first indication information is used for indicating the network equipment to send the first reference clock information.
8. The method of claim 7, wherein the method further comprises:
the network equipment receives a first request message sent by the terminal equipment again, wherein the first request message carries second indication information, and the second indication information is used for indicating the network equipment to stop sending the first reference clock information or indicating the network equipment to switch from sending the first reference clock information to sending the second reference clock information;
the network device stops sending the first reference clock information to the terminal device.
9. The method of claim 7, wherein the method further comprises:
the network equipment receives a first request message sent by the terminal equipment again, wherein the first request message carries the first indication information;
The network device stops sending the first reference clock information to the terminal device.
10. The method of claim 7, wherein the method further comprises:
after the network equipment receives the first request message sent by the terminal equipment, starting a second timer;
the network equipment sends the first reference clock information to the terminal equipment during the operation of the second timer; and if the second timer is overtime, the network equipment stops sending the first reference clock information to the terminal equipment.
11. The method of claim 10, wherein,
the duration of the second timer is predefined; or,
the duration of the second timer is carried in the first request message.
12. The method according to any of claims 1 to 11, wherein the network device sending the first reference clock information to the terminal device comprises:
and the network equipment sends a first SIB to the terminal equipment, wherein the first SIB carries the first reference clock information.
13. The method of any of claims 1 to 11, wherein the first reference clock information comprises at least one of: clock information corresponding to TSN, clock information corresponding to TCS, high-precision clock information.
14. A method of determining a reference clock, the method comprising:
the method comprises the steps that terminal equipment sends a first request message to network equipment, wherein the first request message is used for requesting the network equipment to send first reference clock information; the first request message is a message MSG1; the terminal device sends a first request message to the network device, including: the terminal equipment sends MSG1 to the network equipment on a first PRACH resource, wherein the first PRACH resource and the first reference clock information have an association relation;
the terminal equipment receives the first reference clock information sent by the network equipment;
and after the terminal equipment transmits MSG1 to the network equipment on the first PRACH resource again, stopping receiving the first reference clock information transmitted by the network equipment.
15. The method of claim 14, wherein the method further comprises:
the terminal equipment receives first configuration information sent by the network equipment, wherein the first configuration information is used for determining the configuration of the first PRACH resource.
16. The method of claim 15, wherein the first configuration information comprises at least one of: frequency domain resource information, time domain resource information, code domain resource information, and space domain resource information.
17. The method of claim 14, wherein the first request message is an MSG3 or a dedicated RRC message or a MAC message.
18. The method of claim 17, wherein the terminal device sending a first request message to a network device comprises:
the terminal equipment sends a first request message to the network equipment, wherein the first request message carries first indication information, and the first indication information is used for indicating the network equipment to send the first reference clock information.
19. The method according to any of claims 14 to 18, wherein the terminal device receiving the first reference clock information sent by the network device comprises:
and the terminal equipment receives a first SIB sent by the network equipment, wherein the first SIB carries the first reference clock information.
20. The method of any of claims 14 to 18, wherein the first reference clock information comprises at least one of: clock information corresponding to TSN, clock information corresponding to TCS, high-precision clock information.
21. A device for determining a reference clock, the device comprising:
a receiving unit, configured to receive a first request message sent by a terminal device, where the first request message is used to request a network device to send first reference clock information; the first request message is a message MSG1; the first request message sent by the receiving terminal equipment includes: receiving MSG1 sent by the terminal equipment on a first physical random access channel PRACH resource, wherein the first PRACH resource and the first reference clock information have an association relation;
A transmitting unit, configured to transmit the first reference clock information to the terminal device;
and if the receiving unit receives the MSG1 sent by the terminal equipment on the first PRACH resource again, the sending unit stops sending the first reference clock information to the terminal equipment.
22. The apparatus of claim 21, wherein the transmitting unit is further configured to transmit first configuration information to the terminal device, the first configuration information being used to determine a configuration of the first PRACH resource.
23. The apparatus of claim 22, wherein the first configuration information comprises at least one of: frequency domain resource information, time domain resource information, code domain resource information, and space domain resource information.
24. The apparatus of claim 21, wherein,
after the receiving unit receives MSG1 sent by the terminal equipment on the first PRACH resource, a first timer is started;
the sending unit sends the first reference clock information to the terminal equipment during the operation of the first timer; and if the first timer is overtime, stopping sending the first reference clock information to the terminal equipment.
25. The apparatus of claim 24, wherein,
the duration of the first timer is predefined; or,
the duration of the first timer is related to the first PRACH resource.
26. The apparatus of claim 21, wherein the first request message is an MSG3 or a dedicated RRC message or a MAC message.
27. The apparatus of claim 26, wherein the receiving unit is configured to receive a first request message sent by the terminal device, the first request message carrying first indication information, the first indication information being configured to instruct the network device to send the first reference clock information.
28. The apparatus of claim 27, wherein the sending unit stops sending the first reference clock information to the terminal device if the receiving unit receives the first request message sent by the terminal device again, the first request message carrying second indication information, the second indication information being used to instruct the network device to stop sending the first reference clock information or instruct the network device to switch from sending the first reference clock information to sending the second reference clock information.
29. The apparatus of claim 27, wherein the transmitting unit stops transmitting the first reference clock information to the terminal device if the receiving unit receives the first request message transmitted by the terminal device again, the first request message carrying the first indication information.
30. The apparatus of claim 27, wherein,
after receiving the first request message sent by the terminal equipment, the receiving unit starts a second timer;
the sending unit sends the first reference clock information to the terminal equipment during the operation of the second timer; and if the second timer is overtime, stopping sending the first reference clock information to the terminal equipment.
31. The apparatus of claim 30, wherein a duration of the second timer is predefined; or,
the duration of the second timer is carried in the first request message.
32. The apparatus of any of claims 21-31, wherein the means for transmitting is configured to transmit a first SIB to the terminal device, the first SIB carrying the first reference clock information.
33. The apparatus of any of claims 21-31, wherein the first reference clock information comprises at least one of: clock information corresponding to TSN, clock information corresponding to TCS, high-precision clock information.
34. A device for determining a reference clock, the device comprising:
a sending unit, configured to send a first request message to a network device, where the first request message is used to request the network device to send first reference clock information; the first request message is a message MSG1; the sending a first request message to a network device includes: transmitting MSG1 to the network equipment on a first PRACH resource, wherein the first PRACH resource and the first reference clock information have an association relation;
a receiving unit, configured to receive the first reference clock information sent by the network device;
and if the sending unit sends MSG1 to the network equipment on the first PRACH resource again, the receiving unit stops receiving the first reference clock information sent by the network equipment.
35. The apparatus of claim 34, wherein the receiving unit is further configured to receive first configuration information sent by the network device, the first configuration information being used to determine a configuration of the first PRACH resource.
36. The apparatus of claim 35, wherein the first configuration information comprises at least one of: frequency domain resource information, time domain resource information, code domain resource information, and space domain resource information.
37. The apparatus of claim 34, wherein the first request message is an MSG3 or a dedicated RRC message or a MAC message.
38. The apparatus of claim 37, wherein the means for transmitting is configured to transmit a first request message to the network device, the first request message carrying first indication information, the first indication information being configured to instruct the network device to transmit the first reference clock information.
39. The apparatus of any of claims 34 to 38, wherein the receiving unit is configured to receive a first SIB sent by the network device, the first SIB carrying the first reference clock information.
40. The apparatus of any of claims 34 to 38, wherein the first reference clock information comprises at least one of: clock information corresponding to TSN, clock information corresponding to TCS, high-precision clock information.
41. A terminal device, comprising: a processor and a memory for storing a computer program, the processor being adapted to invoke and run the computer program stored in the memory, to perform the method according to any of claims 1 to 13.
42. A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 14 to 20.
43. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 13.
44. A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 14 to 20.
45. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 13.
46. A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 14 to 20.
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| PCT/CN2019/111313 WO2021072654A1 (en) | 2019-10-15 | 2019-10-15 | Method and device for determining reference clock, terminal device and network device |
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| CN114356436B (en) * | 2021-12-08 | 2024-04-19 | 北京爱芯科技有限公司 | Clock and reset excitation method, device and storage medium |
| WO2023102928A1 (en) * | 2021-12-10 | 2023-06-15 | 北京小米移动软件有限公司 | Synchronization method and apparatus, and device and storage medium |
| CN115022204B (en) * | 2022-05-26 | 2023-12-05 | 阿里巴巴（中国）有限公司 | RTC transmission delay detection method, device and equipment |
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