CN116233993A

CN116233993A - Propagation delay compensation method, terminal and network side equipment

Info

Publication number: CN116233993A
Application number: CN202111461296.3A
Authority: CN
Inventors: 鲍炜
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2023-06-06

Abstract

The application discloses a propagation delay compensation method, a terminal and network side equipment, which belong to the technical field of communication, and the propagation delay compensation method of the embodiment of the application comprises the following steps: the method comprises the steps that a terminal receives first information, wherein the first information carries first reference time information; and the terminal obtains first time information based on the propagation delay compensation value and the first reference time information.

Description

Propagation delay compensation method, terminal and network side equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a propagation delay compensation method, a terminal and network side equipment.

Background

To obtain accurate time information, the cellular network may provide time information of the order of 10ns to the UE by broadcasting or unicast. The wireless signal takes time to transfer from the base station to the UE on the air interface, and the time required becomes propagation delay (Propagation Delay, PD), and the air interface propagation delay can make the time information obtained by the UE inaccurate, so that delay compensation is required.

Disclosure of Invention

The embodiment of the application provides a propagation delay compensation method, a terminal and network side equipment, which can solve the problem that the time obtained by UE is inaccurate due to air interface propagation delay.

In a first aspect, a propagation delay compensation method is provided, applied to a terminal, and the method includes:

the method comprises the steps that a terminal receives first information, wherein the first information carries first reference time information;

and the terminal obtains first time information based on the propagation delay compensation value and the first reference time information.

In a second aspect, a propagation delay compensation method is provided, applied to a network side device, and the method includes:

the network side equipment sends first information to the terminal, wherein the first information carries first reference time information.

In a third aspect, a propagation delay compensation apparatus is provided, comprising:

the first receiving module is used for receiving first information, wherein the first information carries first reference time information;

and the first calculation module is used for obtaining first time information based on the propagation delay compensation value and the first reference time information.

In a fourth aspect, a propagation delay compensation apparatus is provided, including:

the first sending module is used for sending first information to the terminal, wherein the first information carries first reference time information.

In a fifth aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the propagation delay compensation method according to the first aspect.

In a sixth aspect, a terminal is provided, including a processor and a communication interface, where the communication interface is configured to receive first information, where the first information carries first reference time information, and the processor is configured to obtain first time information based on a propagation delay compensation value and the first reference time information.

In a seventh aspect, a network side device is provided, which comprises a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor implements the steps of the propagation delay compensation method as described in the second aspect.

An eighth aspect provides a network side device, including a processor and a communication interface, where the communication interface is configured to send first information to a terminal, and the first information carries first reference time information.

In a ninth aspect, a propagation delay compensation system is provided, comprising: a terminal and a network side device, the terminal being operable to perform the steps of the propagation delay compensation method as described in the first aspect, the network side device being operable to perform the steps of the propagation delay compensation method as described in the second aspect.

In a tenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, implement the steps of the propagation delay compensation method as described in the first aspect, or implement the steps of the propagation delay compensation method as described in the second aspect.

In an eleventh aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor, the processor being for running a program or instructions to implement the method according to the first aspect or to implement the method according to the second aspect.

In a twelfth aspect, a computer program/program product is provided, stored in a storage medium, which is executed by at least one processor to implement the steps of the propagation delay compensation method as described in the first aspect, or to implement the steps of the propagation delay compensation method as described in the second aspect.

In the embodiment of the application, the terminal obtains first time information according to the propagation delay compensation value and the first reference time information, wherein the propagation delay compensation value is used for calibrating the first reference time information so as to compensate the air interface propagation delay.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

FIG. 2 is a schematic diagram of a system messaging window;

FIG. 3 is a schematic diagram of propagation delay;

fig. 4 is a flow chart of a propagation delay compensation method according to an embodiment of the present application;

fig. 5 is one of the interactive flow diagrams of the propagation delay compensation method provided in the embodiment of the present application;

fig. 6 is a second schematic diagram of an interaction flow of the propagation delay compensation method according to the embodiment of the present application;

fig. 7 is a third schematic diagram of an interaction flow of the propagation delay compensation method according to the embodiment of the present application;

fig. 8 is a schematic diagram of an interaction flow of a propagation delay compensation method according to an embodiment of the present application;

fig. 9 is a second flowchart of a propagation delay compensation method according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a propagation delay compensation device according to an embodiment of the present application;

FIG. 11 is a second schematic structural diagram of a propagation delay compensation device according to an embodiment of the present disclosure;

fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 13 is a schematic diagram of a hardware structure of a terminal implementing an embodiment of the present application;

fig. 14 is a schematic structural diagram of a network side device according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below 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 obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiments of the present application, only a base station in an NR system is described as an example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. In the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

In a cellular system, a Network (NW) may transmit reference time information to a UE by broadcasting.

The following describes, taking NR as an example, a procedure in which the NW provides reference time information to the UE by broadcasting:

the NR network indicates a reference amount of time in a system message SIB9 sent to the UE, including:

reference time information: GPS or local time with a minimum granularity of 10 ns.

When the UE receives the reference time information, in order to ensure that the UE and the network understand and agree with each other about the time corresponding to the received/broadcasted reference time information, the protocol agrees to agree that the time corresponding to the reference time information received by the UE is: the boundary of the system frame number (System Frame Number, SFN) where the end boundary of the system message transmission window (SI window) of the system message is located.

Fig. 2 is a schematic diagram of a system message transmission window, referring to fig. 2, where SIB9 of which reference time information is received by the UE is (sfn_2, subframe_9), the system message transmission window of SIB9 is 20 subframes (10 subframes in 1 SFN; in the window, SI message including SIB9 will be repeatedly transmitted many times), and if the end boundary of the system message window where SI message including SIB9 is received by the UE is (sfn_4, end boundary of subframe_0), the reference time information received by the UE corresponds to the end boundary time T of sfn_4

In cellular systems, the network may send time information to the UE in a unicast manner. The following describes, taking NR as an example, a procedure in which the NW provides time information to the UE through unicast:

the amount of reference time that the NR network sends to the UE includes:

reference SFN;

reference time information: GPS or local time with minimum granularity of 10ns

The protocol specifies that the reference time information corresponds to an end boundary of one reference SFN that is closest to a moment at which the UE receives the reference time information; the SFN may be an already past SFN or an SFN that has not yet started.

For example: the location where the UE receives the reference time information is (sfn_2, subframe_1), and the reference SFN value carried in the unicast message is sfn=3, where the moment corresponding to the reference time information received by the UE is the system frame end boundary of the first sfn=3 in the future.

For example: after multiple retransmissions, the location where the UE finally receives the reference time information is (sfn_4, subframe_1), and the reference SFN value carried in the unicast message is sfn=3, where the moment corresponding to the reference time information received by the UE is the system frame end boundary of the previous SFN (i.e. sfn=3 has already passed).

The transfer of radio signals from the base station to the UE over the air requires time, which is called propagation delay. The terminal needs to perform delay Compensation (PD calculation, PDC) according to the fact that the time of the corresponding moment obtained by receiving the reference time information from the air interface is later than the real time of the corresponding moment.

Fig. 3 is a schematic diagram of propagation delay. As shown in fig. 3, the reference time carried in the SI window is T, and on the UE side, the exact time corresponding to the end time of SFN4 should be t=t+pd, where PD is the propagation delay of the radio signal propagating from the base station to the terminal.

In the related art, how to perform propagation delay compensation is not yet solved.

The propagation delay compensation method, the terminal and the network side device provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings through some embodiments and application scenarios thereof.

Fig. 4 is a flow chart of a propagation delay compensation method according to an embodiment of the present application. As shown in fig. 4, the method includes:

step 400, a terminal receives first information, wherein the first information carries first reference time information;

alternatively, the first information may be broadcast information or unicast information.

The first reference time information is reference time information provided to the terminal by the network for determining accurate first time information.

Step 401, the terminal obtains first time information based on the propagation delay compensation value and the first reference time information.

In the embodiment of the application, the terminal obtains the first time information according to the propagation delay compensation value and the first reference time information, wherein the propagation delay compensation value is used for calibrating the first reference time information so as to compensate the air interface propagation delay.

In some embodiments, in the case where the first information is broadcast information, before the terminal receives the first information, the method further includes:

and the terminal acquires the propagation delay compensation value.

It can be understood that in the scenario where the first time information is acquired through broadcast information, the terminal acquires the propagation delay compensation value before receiving the first information.

and the terminal acquires the propagation delay compensation value and triggers the terminal to acquire the first information.

It can be understood that in the scenario of acquiring the first time information through the broadcast information, before the terminal receives the first information, the terminal acquires the propagation delay compensation value, and triggers the terminal to acquire the first information.

Optionally, the terminal acquires a propagation delay compensation value, triggers SIB9 reception, and further acquires first reference time information carried in SIB 9.

Optionally, the acquiring the propagation delay compensation value includes:

receiving second information, wherein the second information carries the propagation delay compensation value;

or alternatively, the process may be performed,

receiving third information, wherein the third information carries a first parameter for calculating the propagation delay compensation value;

And calculating the propagation delay compensation value according to the first parameter.

In the embodiment of the application, the terminal is triggered to acquire the first information by acquiring the propagation delay compensation value, so that the terminal can acquire the first time information based on the propagation delay compensation value and the first reference time information carried in the first information, and the accuracy of the time information is improved.

Fig. 5 is one of the interactive flow diagrams of the propagation delay compensation method provided in the embodiment of the present application. As shown in fig. 5, the propagation delay compensation method includes the steps of:

step 500, network side equipment sends a propagation delay compensation value or a first parameter for calculating the propagation delay compensation value;

step 501, a terminal acquires a propagation delay compensation value, or the terminal acquires the first parameter and calculates the propagation delay compensation value, and triggers the terminal to receive SIB9, i.e. the first information is broadcast information SIB9;

step 502, a terminal receives SIB9 to obtain first reference time information;

in step 503, the terminal obtains first time information according to the propagation delay compensation value and the first reference time information.

In some embodiments, in the case where the first information is unicast information, the method further comprises:

The terminal obtains the propagation delay compensation value in a preset time window, and the preset time window is determined according to the second moment and the time threshold value.

Under the scene that the first time information is acquired through unicast information, the terminal acquires a propagation delay compensation value in a preset time window, and compensates the first reference time information according to the propagation delay compensation value in the preset time window to acquire the first time information.

It will be appreciated that the predetermined time window may be associated with a second time instant, and the predetermined time window may be determined based on the second time instant and a time threshold value.

The second time is a time of receiving the first information or a time of receiving a signal sent in a system frame SFN or before an SFN end boundary corresponding to the first reference time information by the terminal.

For example, when the time of receiving the first information is t, the preset time window is [ t-X, t ], or [ t, t+x ], or [ t-X, t+x ], where X is a time threshold value.

Optionally, X is a time threshold parameter pre-configured by NW or pre-defined by a protocol.

Optionally, the terminal receives the time threshold value X from the NW before propagation delay compensation.

Optionally, X is NW preconfigured, including: x is sent to the terminal by the NW by unicast or broadcast.

Alternatively, in the case where X is NW transmitted to the terminal in a unicast manner, X may also be transmitted together with the propagation delay compensation value or the first parameter time information for calculating the propagation delay compensation value.

In the embodiment of the application, the propagation delay compensation value in the preset time window is obtained, so that the terminal obtains the first time information based on the propagation delay compensation value in the preset time window and the first reference time information carried in the first information, and the matching degree and accuracy of time compensation are improved.

In a scenario of acquiring time information through unicast information, a terminal acquires a propagation delay compensation value, and calculates first time information according to the acquired propagation delay compensation value, where there are several embodiments as follows:

in one mode, before the terminal receives the first information, a propagation delay compensation value is obtained

In some embodiments, in the case where the first information is unicast information, before the terminal receives the first information, the method further includes:

and the terminal acquires the propagation delay compensation value at least one moment.

It can be appreciated that the propagation delay compensation value is obtained earlier than the reception time of the first information.

In some embodiments, the determining, by the terminal, first time information based on the propagation delay compensation value and the first reference time information includes:

under the condition that the acquisition time of the propagation delay compensation value meets a first condition, the terminal obtains the first time information based on the propagation delay compensation value and the first reference time information;

the first condition is that a difference value between a second time and an acquisition time of the propagation delay compensation value is smaller than or equal to a time threshold value;

the second time is a time of receiving the first information, in other words, the second time is a time of receiving the first information.

Or the second time is the time when the signal sent in the system frame SFN or before the SFN finishing boundary corresponding to the first reference time information is received by the terminal.

Wherein the time threshold value is a time threshold parameter predefined by NW unicast or broadcast or protocol.

It can be understood that, when the absolute value of the difference between the time of acquiring the propagation delay compensation value and the second time is smaller than or equal to the time threshold, the time of acquiring the propagation delay compensation value satisfies the first condition, the terminal may directly compensate the first reference time information by using the propagation delay compensation value, so as to obtain the first time information.

In some embodiments, the obtaining, by the terminal, the first time information based on the propagation delay compensation value and the first reference time information when the obtaining time of the propagation delay compensation value meets a first condition includes:

and under the condition that the acquisition time points of a plurality of propagation delay compensation values meet the first condition, the terminal determines first time information based on the propagation delay compensation value with the acquisition time point closest to the second time point and the first reference time information.

When a plurality of propagation delay compensation values are available, the first time information is calculated by using the propagation delay compensation value corresponding to the second time when the acquisition time of the propagation delay compensation value is minimum.

In some embodiments, the method further comprises:

under the condition that the acquisition time of the propagation delay compensation value does not meet the first condition, the terminal executes a first operation or continues to wait for the network side equipment to send the propagation delay compensation value;

the terminal executes a first operation, including at least one of the following:

ignoring the first reference time information, e.g., the radio resource control (Radio Resource Control, RRC) layer of the UE does not submit the first reference time information to an upper layer;

Determining the first time information as the first reference time information;

calculating the first time information by using the latest propagation delay compensation value;

reporting fourth information to network side equipment/base station, wherein the fourth information is used for indicating that the propagation delay compensation value is unavailable;

and the UE RRC layer reports fifth information to an upper layer, wherein the fifth information is used for indicating that the propagation delay compensation value is unavailable.

It can be understood that the time of acquiring the propagation delay compensation value does not meet the first condition, which means that the time interval between the first reference time information acquired by the terminal and the propagation delay compensation value acquired currently is too long, and exceeds the time threshold value (greater than or equal to the time threshold value), the first reference time information and the propagation delay compensation value acquired currently cannot be compensated by using the propagation delay compensation value acquired currently if the time interval exceeds the time threshold value (greater than or equal to the time threshold value), and at this time, the terminal executes the first operation.

The terminal may perform at least one of: ignoring the first reference time information; directly determining the first time information as the first reference time information without compensation; calculating first time information by using the latest used propagation delay compensation value; reporting that the propagation delay compensation value is unavailable to the network side equipment/base station; the terminal RRC layer reports to the upper layer that the propagation delay offset is not available.

Optionally, the propagation delay compensation value is not available including at least one of: cannot be compensated; the compensation value is too early or too old; there is no effective compensation value.

Optionally, the terminal continues to wait for the NW to send the propagation delay compensation value if both the difference between the second time and the time of acquisition of the propagation delay compensation value is greater than or equal to (greater than) the time threshold value.

Fig. 6 is a second schematic diagram of an interaction flow of the propagation delay compensation method according to the embodiment of the present application. As shown in fig. 6, the propagation delay compensation method includes the steps of:

step 600, a terminal sends a first request message to a network side device, where the first request message is used to request the propagation delay compensation value or is used to calculate a first parameter of the propagation delay compensation value;

step 601, network side equipment sends a propagation delay compensation value or a first parameter for calculating the propagation delay compensation value;

step 602, the terminal obtains a propagation delay compensation value, or the terminal obtains the first parameter and calculates to obtain the propagation delay compensation value;

step 603, the network side device sends first information to the terminal, where the first information is unicast information;

step 604, the terminal receives the first information and obtains first reference time information;

In step 605a, when the difference between the second time and the time of obtaining the propagation delay compensation value is less than or equal to the time threshold, the terminal obtains the first time information according to the propagation delay compensation value and the first reference time information.

Step 605b, when absolute values of differences between the acquisition moments of the propagation delay compensation values and the second moment are all smaller than (smaller than or equal to) a time threshold value, the terminal calculates first time information based on one propagation delay compensation value with the closest acquisition moment to the second moment in the propagation delay compensation values and first reference time information.

In step 605c, when the difference between the second time and the time of obtaining the propagation delay compensation value is greater than or equal to (greater than) the time threshold, the terminal executes the first operation or continues waiting for the NW to send the propagation delay compensation value.

The second time is a time of receiving the first information or a time of receiving a signal sent in a system frame SFN or before an SFN end boundary corresponding to the first reference time information by a terminal.

Wherein the terminal performing the first operation includes at least one of: ignoring the first reference time information; directly determining the first time information as the first reference time information without compensation; calculating first time information by using the latest used propagation delay compensation value; reporting that the propagation delay compensation value is unavailable to the network side equipment/base station; the terminal RRC layer reports to the upper layer that the propagation delay offset is not available.

Step 605a, step 605b, and step 605c are alternatively performed.

Wherein step 600 is optional.

Optionally, in the case that the difference between the second time and the time of acquisition of the propagation delay compensation value is greater than or equal to (greater than) the time threshold, the terminal continues to wait for the NW to transmit the propagation delay compensation value, in which case, after the terminal receives the first information, the terminal acquires the propagation delay compensation value, and the subsequent step performed by the terminal may be referred to as the following second mode.

In the embodiment of the application, the propagation delay compensation value in the time threshold time length before the unicast information receiving moment is obtained, so that the terminal obtains the first time information based on the propagation delay compensation value in the preset time window and the first reference time information carried in the first information, and the matching degree and accuracy of time compensation are improved.

In the second mode, after the terminal receives the first information, a propagation delay compensation value is obtained

In some embodiments, in the case where the first information is unicast information, after the terminal receives the first information, the method further includes:

and at a third moment, the terminal acquires the propagation delay compensation value.

It can be understood that the third time is the time of acquiring the propagation delay compensation value, and the third time is later than the time of receiving the first information.

The third time instance includes one or more time instances.

Further, the terminal obtains first time information based on the propagation delay compensation value and the first reference time information, including:

under the condition that the third moment meets a second condition, the terminal obtains the first time information based on the propagation delay compensation value and the first reference time information;

the second condition is that a difference value between the third time and a second time is smaller than or equal to a time threshold value, and the second time is a time when the first information is received or a time when a signal sent in a system frame SFN corresponding to the first reference time information or before an SFN end boundary is received by a terminal.

The time threshold value is a time threshold parameter predefined by unicast or broadcast or protocol of network side equipment.

Optionally, before the terminal obtains the first time information based on the propagation delay compensation value and the first reference time information, the method further includes:

and the terminal receives the time threshold value.

It can be understood that, when the absolute value of the difference between the time of acquiring the propagation delay compensation value and the second time is smaller than or equal to the time threshold, the time of acquiring the propagation delay compensation value satisfies the second condition, the terminal may directly compensate the first reference time information by using the propagation delay compensation value, so as to obtain the first time information.

In some embodiments, the obtaining, by the terminal, the first time information based on the propagation delay compensation value and the first reference time information when the third time satisfies a second condition includes:

and under the condition that the acquisition moments of the propagation delay compensation values meet the second condition, the terminal determines first time information based on the propagation delay compensation value with the earliest acquisition moment and the first reference time information in the propagation delay compensation values.

When a plurality of propagation delay compensation values are available, the first time information is calculated using the propagation delay compensation value whose acquisition time instant is closest to the second time instant, i.e. the propagation delay compensation value whose acquisition time instant is earliest (with respect to the second time instant).

In some embodiments, the method further comprises:

The terminal executes a second operation in the case that the acquisition time of the propagation delay compensation value meeting the second condition does not exist;

wherein the terminal performs a second operation comprising at least one of:

ignoring the first reference time information;

determining the first time information as the first reference time information;

calculating the first time information by using a propagation delay compensation value which is earlier than the second time and is nearest to the second time;

reporting sixth information to network side equipment, wherein the sixth information is used for indicating that the propagation delay compensation value is unavailable;

and the RRC layer of the terminal reports seventh information to an upper layer, wherein the seventh information is used for indicating that the propagation delay compensation value is unavailable.

It can be understood that the acquiring time of the propagation delay compensation value does not meet the second condition, which means that the time interval between the first reference time information acquired by the terminal and the propagation delay compensation value acquired currently is too long, and exceeds the time threshold value (greater than or equal to the time threshold value), the first reference time information and the propagation delay compensation value acquired currently are considered to be not matched, and cannot be compensated by using the propagation delay compensation value acquired currently, and at this time, the terminal executes the second operation.

The terminal may perform at least one of: ignoring the first reference time information; directly determining the first time information as the first reference time information without compensation; calculating the first time information by using a propagation delay compensation value which is earlier than the second time and is nearest to the second time; reporting to the network side device that the propagation delay compensation value is not available; the UE RRC layer reports to the upper layer that the propagation delay offset is not available.

Optionally, the propagation delay compensation value is not available comprises: cannot be compensated; the compensation value is too early or too old.

Fig. 7 is a third schematic diagram of an interaction flow of the propagation delay compensation method according to the embodiment of the present application. As shown in fig. 7, the propagation delay compensation method includes the steps of:

step 700, the network side equipment sends first information to the terminal, wherein the first information is unicast information;

step 701, a terminal receives first information and obtains first reference time information;

step 702, a terminal sends a first request message to a network side device, where the first request message is used to request the propagation delay compensation value or is used to calculate a first parameter of the propagation delay compensation value;

step 703, the network side device sends the propagation delay compensation value or the first parameter for calculating the propagation delay compensation value

Step 704, at a third moment, the terminal obtains a propagation delay compensation value, or the terminal obtains the first parameter and calculates to obtain the propagation delay compensation value;

step 705a, when the difference between the third time and the second time is smaller than (smaller than or equal to) the time threshold, the terminal obtains the first time information according to the propagation delay compensation value and the first reference time information.

In step 705b, when the difference between the time points of acquisition of the propagation delay compensation values (i.e., the third time point includes at least one time point) and the second time point is less than or equal to the time threshold, the terminal calculates the first time information based on one propagation delay compensation value (which may be expressed as the earliest acquisition time point) of the plurality of propagation delay compensation values, where the acquisition time point is closest to the second time point, and the first reference time information.

Step 705c, the terminal executes the second operation when the difference between the time of obtaining the propagation delay compensation value and the second time is greater than or equal to (greater than) the time threshold value.

Wherein the terminal performing the second operation includes at least one of: ignoring the first reference time information; directly determining the first time information as the first reference time information without compensation; calculating the first time information by using a propagation delay compensation value which is earlier than the second time and is nearest to the second time; reporting to the network side device that the propagation delay compensation value is not available; the UE RRC layer reports to the upper layer that the propagation delay offset is not available.

Step 705a, step 705b, step 705c is performed alternatively.

Wherein step 702 is optional.

In the embodiment of the application, the propagation delay compensation value in the time threshold time length after the unicast information receiving moment is obtained, so that the terminal obtains the first time information based on the propagation delay compensation value in the preset time window and the first reference time information carried in the first information, and the matching degree and accuracy of time compensation are improved.

In a third mode, before and after the terminal receives the first information, a propagation delay compensation value is obtained

the terminal acquires a propagation delay compensation value at a first moment to obtain a first propagation delay compensation value;

after the terminal receives the first information, the method further comprises:

and the terminal acquires the propagation delay compensation value at the fourth moment to obtain a first propagation delay compensation value.

In other words, the first time is earlier than the second time, which is earlier than the fourth time.

In some embodiments, the obtaining, by the terminal, first time information based on the propagation delay compensation value and the first reference time information includes:

under the condition that the difference value between the fourth moment and the second moment is smaller than the difference value between the second moment and the first moment, the terminal obtains first time information according to the second propagation delay compensation value and the first reference time information;

under the condition that the difference value between the fourth moment and the second moment is larger than the difference value between the second moment and the first moment, the terminal obtains first time information according to the first propagation delay compensation value and the first reference time information;

under the condition that the difference value between the fourth moment and the second moment is equal to the difference value between the second moment and the first moment, the terminal obtains first time information according to the first propagation delay compensation value or the second propagation delay compensation value and the first reference time information;

the second time is a receiving time of the first information, or the second time is a time when a signal sent in the SFN or before the SFN end boundary corresponding to the first reference time information carried in the first information is received by the terminal.

It can be understood that, when the propagation delay compensation value is acquired before and after the second time, the propagation delay compensation value corresponding to the time closer to the second time is used to compensate the first reference time information carried in the first information, so as to obtain the first time information.

And when the difference between the fourth time and the second time is smaller than the difference between the second time and the first time, indicating that the fourth time is closer to the second time, compensating the first reference time information by using a second propagation delay compensation value acquired at the fourth time to acquire the first time information.

And if the difference between the fourth moment and the second moment is larger than the difference between the second moment and the first moment, indicating that the first moment is closest to the second moment, compensating the first reference time information by using the first propagation delay compensation value acquired at the first moment to acquire the first time information.

The difference between the fourth time and the second time is equal to the difference between the second time and the first time, which means that the intervals from the first time and the fourth time to the second time are the same, and the first reference time information can be compensated by using the first propagation delay compensation value obtained at the first time or the second propagation delay compensation value obtained at the fourth time to obtain the first time information.

In the embodiment of the application, the propagation delay compensation value before and after the receiving moment of the unicast information is obtained, so that the propagation delay compensation value nearest to the receiving moment of the first information is determined to be used for performing delay compensation, the first time information is obtained, and the matching degree and accuracy of the time compensation are improved.

In some embodiments, the difference between the fourth time and the second time is less than or equal to a time threshold value, and the difference between the second time and the first time is less than or equal to a time threshold value.

Fig. 8 is a schematic diagram of an interaction flow of a propagation delay compensation method according to an embodiment of the present application. As shown in fig. 8, the propagation delay compensation method includes the steps of:

step 800, the terminal sends a first request message to the network side device, where the first request message is used to request the propagation delay compensation value or is used to calculate a first parameter of the propagation delay compensation value;

step 801, a network side device sends a first propagation delay compensation value or a first parameter for calculating the first propagation delay compensation value;

Step 802, at a first moment, a terminal acquires a first propagation delay compensation value;

step 803, the network side device sends first information to the terminal, where the first information is unicast information;

step 804, the terminal receives the first information and obtains first reference time information;

step 805, the network side device sends a second propagation delay compensation value or a second parameter for calculating the second propagation delay compensation value;

step 806, at a fourth moment, the terminal obtains a second propagation delay compensation value, or the terminal obtains the second parameter and calculates to obtain the second propagation delay compensation value;

step 807, obtaining first time information based on the propagation delay compensation value corresponding to the time closer to the second time and the first reference time information, including:

step 807a, when the difference between the fourth time and the second time is smaller than the difference between the second time and the first time, the terminal obtains first time information according to the second propagation delay compensation value and the first reference time information;

step 807b, when the difference between the fourth time and the second time is greater than the difference between the second time and the first time, the terminal obtains first time information according to the first propagation delay compensation value and the first reference time information.

Step 807c, when the difference between the fourth time and the second time is equal to the difference between the second time and the first time, the terminal obtains first time information according to the first propagation delay compensation value or the second propagation delay compensation value and the first reference time information.

Step 807a, step 807b, and step 807c are performed alternatively.

Wherein step 800 is optional.

In the embodiment of the application, the propagation delay compensation value in the time threshold time length before and after the unicast information receiving moment is obtained, so that the terminal obtains the first time information based on the propagation delay compensation value in the preset time window and the first reference time information carried in the first information, and the matching degree and accuracy of the time compensation are improved.

In some embodiments, the acquiring the propagation delay compensation value includes:

Or alternatively, the process may be performed,

It should be noted that, when the propagation delay compensation value is obtained by obtaining the first parameter and calculating the propagation delay compensation value according to the first parameter, the time of obtaining the propagation delay compensation value refers to the time of obtaining the first parameter, or may refer to the time of calculating the propagation delay compensation value according to the first parameter.

In some embodiments, before the obtaining the propagation delay compensation value, the method further includes:

and sending a first request message to network side equipment, wherein the first request message is used for requesting the propagation delay compensation value or calculating a first parameter of the propagation delay compensation value.

In other words, in some alternative embodiments, the terminal needs to request the propagation delay compensation value or the first parameter for calculating the propagation delay compensation value to the network side device, and after receiving the request message of the terminal, the network side device sends the propagation delay compensation value or the first parameter for calculating the propagation delay compensation value to the terminal.

In some embodiments, the obtaining, by the terminal, the first time information based on the propagation delay compensation value and the first reference time information includes:

and the terminal sums the propagation delay compensation value and the first reference time information to obtain the first time information.

In the embodiment of the application, the terminal can trigger the terminal to acquire the first reference time information broadcasted by the network side equipment by acquiring the propagation delay compensation value, can also acquire the propagation delay compensation value in the preset time window, can enable the terminal to acquire the first time information based on the propagation delay compensation value and the first reference time information carried in the first information, can report under the condition that the propagation delay compensation value in the time window cannot be preset, and improves the matching degree and accuracy of time compensation.

Fig. 9 is a second flowchart of a propagation delay compensation method according to an embodiment of the present application. As shown in fig. 9, the propagation delay compensation method includes:

step 900, the network side device sends first information, where the first information carries first reference time information.

The first reference time information is reference time information provided by the network side device to the terminal for determining accurate time information.

In some embodiments, the method further comprises:

the network side equipment sends second information to the terminal, wherein the second information carries the propagation delay compensation value;

or alternatively, the process may be performed,

and the network side equipment sends third information to the terminal, wherein the third information carries a first parameter for calculating the propagation delay compensation value.

In some embodiments, the method further comprises:

the network side equipment receives a first request message sent by a terminal, wherein the first request message is used for requesting the propagation delay compensation value or calculating a first parameter of the propagation delay compensation value.

In some embodiments, the method further comprises:

the network side equipment receives fourth information or sixth information sent by the terminal, wherein the fourth information is used for indicating that the propagation delay compensation value is unavailable, and the sixth information is used for indicating that the propagation delay compensation value is unavailable.

For an understanding of the propagation delay compensation method at the network side device side, reference may be made to each process and description in the foregoing propagation delay compensation method at the terminal side, which are not repeated herein.

In the embodiment of the application, the network side equipment can trigger the terminal to acquire the first reference time information broadcasted by the network side equipment by acquiring the propagation delay compensation value or the first parameter used for calculating the propagation delay compensation value and transmit the first information, and can also enable the terminal to acquire the propagation delay compensation value in a preset time window by acquiring the propagation delay compensation value, so that the terminal obtains the first time information based on the propagation delay compensation value and the first reference time information carried in the first information, thereby improving the matching degree and accuracy of time compensation.

According to the propagation delay compensation method provided by the embodiment of the application, the execution main body can be a propagation delay compensation device. In the embodiment of the present application, a propagation delay compensation device is used as an example to execute a propagation delay compensation method by using the propagation delay compensation device, which is described in the embodiment of the present application.

Fig. 10 is a schematic structural diagram of a propagation delay compensation device according to an embodiment of the present application. As shown in fig. 10, the propagation delay compensation device 1000 includes:

a first receiving module 1010, configured to receive first information, where the first information carries first reference time information;

A first calculation module 1020, configured to obtain first time information based on the propagation delay compensation value and the first reference time information.

In some embodiments, in the case where the first information is broadcast information, the apparatus further comprises:

and the first acquisition module is used for acquiring the propagation delay compensation value.

and the second acquisition module is used for acquiring the propagation delay compensation value and triggering the terminal to acquire the first information.

In some embodiments, where the first information is unicast information, the apparatus further comprises:

The third obtaining module is configured to obtain the propagation delay compensation value in a preset time window, where the preset time window is determined according to a second time and a time threshold, and the second time is a time when the first information is received or a time when a signal sent in a system frame SFN corresponding to the first reference time information or before an SFN end boundary is received by a terminal.

and a fourth acquisition module, configured to acquire the propagation delay compensation value at least one moment.

In some embodiments, the first computing module 1020 is configured to:

under the condition that the acquisition time of the propagation delay compensation value meets a first condition, acquiring the first time information based on the propagation delay compensation value and the first reference time information;

the second time is the time of receiving the first information or the time of receiving a signal sent in a system frame SFN or before the SFN finishing boundary corresponding to the first reference time information by the terminal.

In some embodiments, the obtaining the first time information based on the propagation delay compensation value and the first reference time information when the obtaining time of the propagation delay compensation value meets a first condition includes:

and when the acquisition time points of the plurality of propagation delay compensation values meet the first condition, determining first time information based on the propagation delay compensation value with the acquisition time point closest to the second time point and the first reference time information.

In some embodiments, the apparatus further comprises:

the first execution module is used for executing a first operation or continuously waiting for the network side equipment to send the propagation delay compensation value under the condition that the acquisition time of the propagation delay compensation value does not meet the first condition;

wherein the performing a first operation includes at least one of:

Ignoring the first reference time information;

determining the first time information as the first reference time information;

reporting fourth information to network side equipment, wherein the fourth information is used for indicating that the propagation delay compensation value is unavailable;

and the RRC layer of the terminal reports fifth information to an upper layer, wherein the fifth information is used for indicating that the propagation delay compensation value is unavailable.

and a fifth obtaining module, configured to obtain the propagation delay compensation value at a third time.

In some embodiments, the obtaining the first time information based on the propagation delay compensation value and the first reference time information includes:

Obtaining the first time information based on the propagation delay compensation value and the first reference time information under the condition that the third moment meets a second condition;

Optionally, when the third time meets the second condition, the obtaining the first time information based on the propagation delay compensation value and the first reference time information includes:

and under the condition that the acquisition moments of the propagation delay compensation values meet the second condition, determining first time information based on the propagation delay compensation value with the earliest acquisition moment and the first reference time information in the propagation delay compensation values.

Optionally, the apparatus further includes:

a second execution module, configured to execute a second operation when there is no acquisition time of the propagation delay compensation value that satisfies the second condition;

Wherein the performing a second operation includes at least one of:

ignoring the first reference time information;

determining the first time information as the first reference time information;

Optionally, in the case that the first information is unicast information, the apparatus further includes:

a sixth obtaining module, configured to obtain a propagation delay compensation value at a first time, to obtain a first propagation delay compensation value;

And a seventh acquisition module, configured to acquire a propagation delay compensation value at a fourth time, to obtain a second propagation delay compensation value.

Optionally, the first computing module 1020 is configured to:

under the condition that the difference value between the fourth moment and the second moment is smaller than the difference value between the second moment and the first moment, obtaining first time information according to the second propagation delay compensation value and the first reference time information;

under the condition that the difference value between the fourth moment and the second moment is larger than the difference value between the second moment and the first moment, obtaining first time information according to the first propagation delay compensation value and the first reference time information;

under the condition that the difference value between the fourth moment and the second moment is equal to the difference value between the second moment and the first moment, obtaining first time information according to the first propagation delay compensation value or the second propagation delay compensation value and the first reference time information;

the second time is a time of receiving the first information or a time of receiving a signal sent in a system frame SFN or before an SFN end boundary corresponding to the first reference time information by a terminal. .

Optionally, the difference between the fourth time and the second time is less than or equal to a time threshold, and the difference between the second time and the first time is less than or equal to the time threshold.

Optionally, the acquiring the propagation delay compensation value includes:

or alternatively, the process may be performed,

Optionally, the apparatus further includes:

the first sending module is used for sending a first request message to the network side equipment, wherein the first request message is used for requesting the propagation delay compensation value or calculating a first parameter of the propagation delay compensation value.

Optionally, the first computing module 1020 is configured to:

and summing the propagation delay compensation value and the first reference time information to obtain the first time information.

Optionally, the apparatus further includes:

a fourth receiving module, configured to receive the time threshold value;

The propagation delay compensation device in the embodiment of the application may be an electronic device, for example, an electronic device with an operating system, or may be a component in the electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The propagation delay compensation device provided in the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 4 to fig. 8, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Fig. 11 is a second schematic structural diagram of a propagation delay compensation device according to an embodiment of the present application. As shown in fig. 11, the propagation delay compensation device 1100 includes:

the first sending module 1110 is configured to send first information to a terminal, where the first information carries first reference time information.

Optionally, the propagation delay compensation device further includes a second sending module, configured to:

transmitting second information to the terminal, wherein the second information carries a propagation delay compensation value;

or alternatively, the process may be performed,

and sending third information to the terminal, wherein the third information carries a first parameter for calculating a propagation delay compensation value.

Optionally, the propagation delay compensation device further includes a second receiving module, configured to:

and receiving a first request message sent by the terminal, wherein the first request message is used for requesting the propagation delay compensation value or calculating a first parameter of the propagation delay compensation value.

Optionally, the propagation delay compensation device further includes a third receiving module, configured to:

And receiving fourth information or sixth information sent by the terminal, wherein the fourth information is used for indicating that the propagation delay compensation value is unavailable, and the sixth information is used for indicating that the propagation delay compensation value is unavailable.

In the embodiment of the application, the propagation delay compensation device sends the propagation delay compensation value or the first parameter for calculating the propagation delay compensation value and sends the first information, so that the terminal can trigger the terminal to acquire the first reference time information broadcasted by the network side equipment by acquiring the propagation delay compensation value, and also can enable the terminal to acquire the propagation delay compensation value in a preset time window by acquiring the propagation delay compensation value, so that the terminal obtains the first time information based on the propagation delay compensation value and the first reference time information carried in the first information, and the matching degree and accuracy of time compensation are improved.

The propagation delay compensation device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 9, and achieve the same technical effect, so that repetition is avoided, and no further description is provided herein.

Optionally, as shown in fig. 12, the embodiment of the present application further provides a communication device 1200, including a processor 1201 and a memory 1202, where the memory 1202 stores a program or an instruction that can be executed on the processor 1201, for example, when the communication device 1200 is a terminal, the program or the instruction is executed by the processor 1201 to implement the steps of the foregoing propagation delay compensation method embodiment, and achieve the same technical effects. When the communication device 1200 is a network side device, the program or the instruction, when executed by the processor 1201, implements the steps of the foregoing propagation delay compensation method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the communication interface is used for receiving first information, the first information carries first reference time information, and the processor is used for obtaining the first time information based on the propagation delay compensation value and the first reference time information. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 13 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 1300 includes, but is not limited to: at least some of the components of the radio frequency unit 1301, the network module 1302, the audio output unit 1303, the input unit 1304, the sensor 1305, the display unit 1306, the user input unit 1307, the interface unit 1308, the memory 1309, the processor 1310, and the like.

Those skilled in the art will appreciate that the terminal 1300 may further include a power source (e.g., a battery) for supplying power to the various components, and the power source may be logically connected to the processor 1310 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system. The terminal structure shown in fig. 13 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 1304 may include a graphics processing unit (Graphics Processing Unit, GPU) 13041 and a microphone 13042, with the graphics processor 13041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1306 may include a display panel 13061, and the display panel 13061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1307 includes at least one of a touch panel 13071 and other input devices 13072. The touch panel 13071 is also referred to as a touch screen. The touch panel 12071 may include two parts, a touch detection device and a touch controller. Other input devices 13072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 1301 may transmit the downlink data to the processor 1310 for processing; in addition, the radio frequency unit 1301 may send uplink data to the network side device. Typically, the radio unit 1301 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 1309 may be used to store software programs or instructions and various data. The memory 1309 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1309 may include volatile memory or nonvolatile memory, or the memory 1309 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), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 1309 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 1310 may include one or more processing units; optionally, processor 1310 integrates an application processor that primarily handles operations related to the operating system, user interface, and applications, and a modem processor that primarily handles wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1310.

The radio frequency unit 1301 is configured to receive first information, where the first information carries first reference time information;

the processor 1310 is configured to obtain first time information based on the propagation delay compensation value and the first reference time information.

Optionally, in the case that the first information is broadcast information, the processor 1310 is further configured to:

and acquiring the propagation delay compensation value.

And acquiring the propagation delay compensation value, and triggering the terminal to acquire the first information.

Optionally, in the case that the first information is unicast information, the processor 1310 is further configured to:

and acquiring the propagation delay compensation value in a preset time window, wherein the preset time window is determined according to a second moment and a time threshold value, and the second moment is the receiving moment of the first information or the moment when a signal sent in a system frame SFN corresponding to the first reference time information or before the SFN ends a boundary is received by a terminal.

And acquiring the propagation delay compensation value at least one moment.

Optionally, the processor 1310 is further configured to:

Optionally, when the time of obtaining the propagation delay compensation value meets a first condition, obtaining the first time information based on the propagation delay compensation value and the first reference time information includes:

Optionally, the processor 1310 is further configured to:

executing a first operation or continuing to wait for the network side equipment to send the propagation delay compensation value under the condition that the acquisition time of the propagation delay compensation value does not meet the first condition;

wherein the performing a first operation includes at least one of:

ignoring the first reference time information;

determining the first time information as the first reference time information;

And at a third moment, acquiring the propagation delay compensation value.

Optionally, the processor 1310 is further configured to:

Optionally, the processor 1310 is further configured to: performing a second operation in the absence of an acquisition instant of propagation delay compensation values satisfying the second condition;

Wherein the performing a second operation includes at least one of:

ignoring the first reference time information;

determining the first time information as the first reference time information;

acquiring a propagation delay compensation value at a first moment to obtain a first propagation delay compensation value;

and acquiring a propagation delay compensation value at a fourth time to obtain a second propagation delay compensation value.

Optionally, the processor 1310 is further configured to:

Optionally, the acquiring the propagation delay compensation value includes:

or alternatively, the process may be performed,

Optionally, the radio frequency unit 1301 is configured to:

Optionally, the processor 1310 is further configured to:

Optionally, the radio frequency unit 1301 is further configured to: receiving the time threshold value;

The embodiment of the application also provides network side equipment, which comprises a processor and a communication interface, wherein the communication interface is used for sending first information, and the first information carries first reference time information. The network side device embodiment corresponds to the network side device method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 14, the network side device 1400 includes: an antenna 1401, radio frequency means 1402, baseband means 1403, a processor 1404 and a memory 1405. An antenna 1401 is coupled to a radio 1402. In the uplink direction, the radio frequency device 1402 receives information via the antenna 1401 and transmits the received information to the baseband device 1403 for processing. In the downlink direction, the baseband device 1403 processes information to be transmitted, and transmits the processed information to the radio frequency device 1402, and the radio frequency device 1402 processes the received information and transmits the processed information through the antenna 1401.

The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 1403, and the baseband apparatus 1403 includes a baseband processor.

The baseband apparatus 1403 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 14, where one chip, for example, a baseband processor, is connected to the memory 1405 through a bus interface, so as to invoke a program in the memory 1405 to perform the network device operation shown in the above method embodiment.

The network-side device may also include a network interface 1406, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 1400 of the embodiment of the present invention further includes: instructions or programs stored in the memory 1405 and executable on the processor 1404, the processor 1404 invokes the instructions or programs in the memory 1405 to perform the method performed by the modules shown in fig. 11 to achieve the same technical effect, and are not repeated here.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the foregoing propagation delay compensation method embodiment, and the same technical effect can be achieved, so that repetition is avoided, and no further description is given here.

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

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, the processor is configured to run a program or an instruction, implement each process of the foregoing propagation delay compensation method embodiment, and achieve the same technical effect, so as to avoid repetition, and no further description is provided herein.

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.

The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the foregoing propagation delay compensation method embodiment, and the same technical effect can be achieved, so that repetition is avoided, and details are not repeated herein.

The embodiment of the application also provides a propagation delay compensation system, which comprises: the terminal can be used for executing the steps of the propagation delay compensation method, and the network side equipment can be used for executing the steps of the propagation delay compensation method.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A propagation delay compensation method, comprising:

2. The propagation delay compensation method of claim 1, wherein, in the case where the first information is broadcast information, the method further comprises, before the terminal receives the first information:

and the terminal acquires the propagation delay compensation value.

3. The propagation delay compensation method of claim 1, wherein, in the case where the first information is broadcast information, the method further comprises, before the terminal receives the first information:

4. The propagation delay compensation method of claim 1, wherein in the case where the first information is unicast information, the method further comprises:

the terminal obtains the propagation delay compensation value in a preset time window, wherein the preset time window is determined according to a second moment and a time threshold value, and the second moment is the receiving moment of the first information or the moment when a signal sent in a system frame SFN corresponding to the first reference time information or before the SFN ends a boundary is received by the terminal.

5. The propagation delay compensation method of claim 1, wherein, in the case where the first information is unicast information, the method further comprises, before the terminal receives the first information:

6. The propagation delay compensation method of claim 5, wherein the determining, by the terminal, first time information based on the propagation delay compensation value and the first reference time information comprises:

7. The propagation delay compensation method according to claim 6, wherein the obtaining, by the terminal, the first time information based on the propagation delay compensation value and the first reference time information in the case where the acquisition time of the propagation delay compensation value satisfies a first condition includes:

8. The propagation delay compensation method of claim 6, further comprising:

ignoring the first reference time information;

determining the first time information as the first reference time information;

9. The propagation delay compensation method of claim 1, wherein, in the case where the first information is unicast information, the terminal receives the first information, the method further comprises:

10. The propagation delay compensation method of claim 9, wherein the obtaining, by the terminal, first time information based on the propagation delay compensation value and the first reference time information comprises:

11. The propagation delay compensation method of claim 10, wherein the obtaining, by the terminal, the first time information based on the propagation delay compensation value and the first reference time information if the third time satisfies a second condition includes:

12. The propagation delay compensation method of claim 10, further comprising:

wherein the terminal performs a second operation comprising at least one of:

ignoring the first reference time information;

determining the first time information as the first reference time information;

13. The propagation delay compensation method of claim 1, wherein, in the case where the first information is unicast information,

before the terminal receives the first information, the method further comprises:

and the terminal acquires a propagation delay compensation value at a fourth moment to obtain a second propagation delay compensation value.

14. The propagation delay compensation method of claim 13, wherein the terminal obtains first time information based on the propagation delay compensation value and the first reference time information, comprising:

15. The propagation delay compensation method of claim 14, wherein the difference between the fourth time and the second time is less than or equal to a time threshold value, and the difference between the second time and the first time is less than or equal to a time threshold value.

16. The propagation delay compensation method of any one of claims 2-3, 5, 9, 13, wherein the obtaining the propagation delay compensation value comprises:

or alternatively, the process may be performed,

17. The propagation delay compensation method of claim 16, wherein prior to said obtaining said propagation delay compensation value, further comprising:

18. The propagation delay compensation method according to any one of claims 1-17, wherein the obtaining, by the terminal, the first time information based on the propagation delay compensation value and the first reference time information comprises:

19. The propagation delay compensation method of claim 4, 6, 10 or 15, further comprising:

the terminal receives the time threshold value;

20. A propagation delay compensation method, comprising:

the network side equipment sends first information, wherein the first information carries first reference time information.

21. The propagation delay compensation method of claim 20, further comprising:

the network side equipment sends second information to the terminal, wherein the second information carries a propagation delay compensation value;

or alternatively, the process may be performed,

the network side equipment sends third information to the terminal, wherein the third information carries a first parameter for calculating a propagation delay compensation value.

22. The propagation delay compensation method of claim 21, further comprising:

and the network side equipment receives a first request message sent by the terminal, wherein the first request message is used for requesting the propagation delay compensation value or calculating a first parameter of the propagation delay compensation value.

23. The propagation delay compensation method of claim 21 or 22, further comprising:

24. A propagation delay compensation device, comprising:

25. A propagation delay compensation device, comprising:

26. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the propagation delay compensation method of any one of claims 1 to 19.

27. A network side device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the propagation delay compensation method of any one of claims 20 to 23.

28. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the propagation delay compensation method according to any one of claims 1 to 19 or the steps of the propagation delay compensation method according to any one of claims 20 to 23.