CN115707086A

CN115707086A - Time delay compensation method, device, apparatus and storage medium

Info

Publication number: CN115707086A
Application number: CN202110904534.7A
Authority: CN
Inventors: 周雷; 费永强
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-08-06
Filing date: 2021-08-06
Publication date: 2023-02-17

Abstract

The application provides a time delay compensation method, equipment, a device and a storage medium, after UE or network equipment acquires wireless network resources, the time difference of data receiving and sending of the UE or the network equipment is determined through the wireless network resources; based on the time difference corresponding to the UE and the time difference corresponding to the network device, a transmission delay compensation value for data transmission between the UE and the network device may be determined, and according to the transmission delay compensation value, the UE or the network device may perform delay compensation processing between the UE and the network device. Compared with the prior art, the method and the device are beneficial to improving the accuracy of the time synchronization error between the UE and the network equipment.

Description

Time delay compensation method, device, apparatus and storage medium

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to a method, a device, and an apparatus for time delay compensation, and a storage medium.

Background

The development of new-generation information communication technologies such as the internet of things, 5G and industrial internet speeds up the transformation and upgrading pace of the traditional industry, and the communication demand of object-object interconnection is increased. Traditional ethernet has been unable to meet the increasing data and widely distributed Network demands, and Time Sensitive Network (TSN) technology has come into force. The time sensitive network can provide deterministic data transmission capability through mechanisms such as clock synchronization, data scheduling, network configuration and the like on the basis of a 5G New Radio (NR) network. The time sensitive network TSN firstly solves the clock synchronization and delay calculation problem in the network to ensure that the task scheduling of the whole network has high consistency.

In the prior art, time synchronization is mainly performed by a propagation-based delay compensation (TA-based PDC) method, however, the accuracy requirement of the time synchronization error is high in a control to control scene (i.e., ± 145ns to ± 275 ns), and the time synchronization error of the existing propagation delay compensation method cannot meet the accuracy requirement.

Disclosure of Invention

The application provides a time delay compensation method, equipment, a device and a storage medium, which are used for solving the problems in the prior art.

In a first aspect, the present application provides a delay compensation method, applied to a first device, including:

acquiring wireless network resources;

determining a first time difference for the first device to receive and transmit data through the wireless network resource;

the first time difference is used for being matched with a second time difference of a second device for receiving and sending data, a transmission delay compensation value of data transmission between the first device and the second device is determined, the second time difference is determined by the second device through the wireless network resource, and the transmission delay compensation value is used for executing delay compensation processing of the first device and the second device.

In some embodiments, the wireless network resources include sounding reference signal, SRS, resources and downlink reference signal, DL-PRS/channel state information reference signal, CSI-RS, resources.

In some embodiments, when the first device is a terminal device, determining a first time difference for the first device to receive and transmit data through the wireless network resource includes:

determining a first receiving time for receiving a CSI-RS signal sent by a second device;

determining a first transmission time for transmitting an SRS signal to the second device;

and determining the first time difference according to the first receiving time and the first sending time.

In some embodiments, determining the first time difference based on the first receive time and the first transmit time comprises:

and determining the difference value between the first sending time and the first receiving time as the first time difference.

In some embodiments, when the first device is a network device, determining a first time difference for the first device to receive and transmit data through the wireless network resource includes:

determining a second transmission time to transmit a CSI-RS signal to the second device;

determining a second receiving time for receiving the SRS signal sent by the second equipment;

and determining the second time difference according to the second receiving time and the second sending time.

In some embodiments, determining the second time difference based on the second receive time and the second transmit time comprises:

and determining the difference value between the second sending time and the second receiving time as the second time difference.

In some embodiments, when the first device is a terminal device and the second device is a network device, the method further includes:

receiving a first indication message sent by the second device, where the first indication message is used to indicate that the terminal device executes delay compensation processing;

receiving the second time difference sent by the second device;

determining the transmission delay compensation value according to the first time difference and the second time difference;

and executing delay compensation processing based on the transmission delay compensation value.

receiving a second indication message sent by the second device, where the second indication message is used to indicate that the network device performs delay compensation processing;

and sending a notification message containing the first time difference to the second device, wherein the notification message is used for instructing the network device to determine the transmission delay compensation value according to the first time difference and the second time difference, and executing delay compensation processing based on the transmission delay compensation value.

In some embodiments, determining the propagation delay compensation value according to the first time difference and the second time difference comprises:

determining a propagation delay compensation value by the following formula:

where Δ T represents a transmission delay compensation value, T1 represents a first time difference, and T2 represents a second time difference.

In some embodiments, determining a first time difference for the first device to transceive data over the wireless network resource comprises:

after receiving a third indication message sent by the second device, determining a first time difference for the first device to receive and send data through the wireless network resource;

wherein the third indication message is used for indicating to trigger a delay compensation function.

In some embodiments, when the second device is a terminal device, the third indication message includes an uplink scheduling request SR or a sounding reference signal SRs;

and when the second device is a network device, the third indication message includes a Physical Downlink Control Channel (PDCCH).

In some embodiments, the first time difference and the second time difference are time differences corresponding to a single radio network resource group, where each radio network resource group includes one SRS resource and one DL-PRS/CSI-RS resource;

alternatively, the first and second liquid crystal display panels may be,

the first time difference and the second time difference are average values of a plurality of time differences corresponding to a plurality of wireless network resource groups.

In a second aspect, the present application provides a delay compensation device, applied to a first device, including a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

acquiring wireless network resources;

the first time difference is used for being matched with a second time difference of a second device for receiving and sending data, a transmission delay compensation value of the first device and the second device for data transmission is determined, the second time difference is determined by the second device through the wireless network resource, and the transmission delay compensation value is used for executing delay compensation processing of the first device and the second device.

receiving the second time difference sent by the second device;

determining a propagation delay compensation value by the following formula:

alternatively, the first and second electrodes may be,

In a third aspect, the present application provides a delay compensation apparatus, applied to a first device, including:

the acquisition module is used for acquiring wireless network resources;

the determining module is used for determining a first time difference of data receiving and sending of the first equipment through the wireless network resources;

In a fourth aspect, the present application provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the computer-executable instructions are executed by a processor, the computer-executable instructions are used to implement the latency compensation method described above.

According to the time delay compensation method, the time delay compensation equipment, the time delay compensation device and the time delay compensation storage medium, after the UE or the network equipment obtains the wireless network resources, the time difference of data receiving and sending of the UE or the network equipment is determined through the wireless network resources; based on the time difference corresponding to the UE and the time difference corresponding to the network device, a transmission delay compensation value for data transmission between the UE and the network device may be determined, and according to the transmission delay compensation value, the UE or the network device may perform delay compensation processing between the UE and the network device. Compared with the prior art, the method and the device for improving the time synchronization error accuracy between the UE and the network equipment are beneficial to improving the time synchronization error accuracy, so that the accuracy requirement of a special scene (such as a control to control scene) on the time synchronization error can be met.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic view of a smart grid (smart grid);

fig. 2 is a schematic diagram of a control to control scenario;

FIG. 3 is a schematic diagram of the principle of TA-based (Timing advanced-based, uplink reference) propagation delay compensation;

fig. 4 is a schematic diagram of a delay compensation method according to an embodiment of the present application;

FIG. 5 is a diagram of DL-PRS/CSI-RS resources and SRS resources used for calculating a time difference in an embodiment of the present application;

FIG. 6 is a schematic diagram illustrating transmission delay compensation performed by a network device based on periodic SRS resources and DL-PRS/CSI-RS resources triggered in an embodiment of the present application;

FIG. 7 is a schematic diagram illustrating transmission delay compensation performed by a terminal device based on periodic SRS resources and DL-PRS/CSI-RS resources triggered in an embodiment of the present application;

FIG. 8 is a schematic diagram illustrating transmission delay compensation based on semi-persistent SRS resources and DL-PRS/CSI-RS resources triggered by a network device in an embodiment of the present application;

fig. 9 is a schematic diagram illustrating that a terminal device performs transmission delay compensation based on a semi-persistent SRS resource and a DL-PRS/CSI-RS resource triggered by an SRS according to an embodiment of the present application;

FIG. 10 is a diagram illustrating transmission delay compensation performed by a terminal device using SR triggered semi-persistent SRS resources and DL-PRS/CSI-RS resources in an embodiment of the present application;

fig. 11 is a schematic diagram of a delay compensation device provided in an embodiment of the present application;

fig. 12 is a schematic diagram of a delay compensation apparatus applied to a first device according to an embodiment of the present disclosure.

Specific embodiments of the present disclosure have been shown by way of example in the drawings and will be described in more detail below. The drawings and written description are not intended to limit the scope of the disclosed concepts in any way, but rather to illustrate the disclosed concepts to those skilled in the art by reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present application, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

The words "if", as used herein may be interpreted as "at \8230; \8230whenor" when 8230; \8230when or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a good or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such good or system. Without further limitation, an element defined by the phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in articles of commerce or systems including such elements.

The development of new-generation information communication technologies such as the internet of things, 5G and industrial internet speeds up the transformation and upgrading pace of the traditional industry, and the communication demand of object-object interconnection is increased. Traditional ethernet networks have been unable to meet the increasing data and widely distributed Network demands, and Time Sensitive Network (TSN) technology has come. The time-sensitive network can provide deterministic data transmission capability through mechanisms such as clock synchronization, data scheduling, network configuration and the like on the basis of a 5G New Radio (NR) network. The time sensitive network TSN firstly solves the clock synchronization and delay calculation problem in the network to ensure that the task scheduling of the whole network has high consistency.

Fig. 1 is a scene schematic diagram of a smart grid (smart grid), as shown in fig. 1, in the smart grid scene, a terminal device needs to perform clock synchronization with a 5G master clock (GM), the 5G GM is located on a network side, and only one transmission from the terminal device to the 5G GM needs to be performed through an air interface.

Fig. 2 is a schematic diagram of a control to control (control to control) scenario, as shown in fig. 2, in the control to control scenario, a terminal device needs to perform clock synchronization with a Time Stamp Counter Master clock (TSC GM), the TSC GM is located at a terminal side, and two transmissions over the air interface are needed from the terminal to the TSC GM.

Fig. 3 is a schematic diagram illustrating the principle of TA-based (uplink-based) propagation delay compensation, and as shown in fig. 3, the terminal UE or the base station BS performs a coarse adjustment according to the received reference Timing information, where the adjustment amount is N _TA /2. The original synchronization process and the propagation delay compensation operation are independent from each other, that is, the original synchronization process is not affected by the propagation delay compensation operation.

However, the accuracy requirement of the time synchronization error in the control to control scenario is high (± 145ns to ± 275 ns), and the time synchronization error of the existing propagation-based delay compensation (TA-based PDC) method cannot meet the accuracy requirement.

The application provides a delay compensation method, a device and a storage medium, which aim to solve the above technical problems in the prior art.

The main conception of the scheme of the application is as follows: the application provides a method for measuring and calculating propagation delay and compensating by using SRS (sounding reference signal) resources and DL-PRS (downlink reference signal)/CSI-RS (Channel state information-reference signal) resources of a PDC (polycrystalline Diamond compact) for compensating propagation delay.

The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments. Embodiments of the present application will be described below with reference to the accompanying drawings.

It is to be understood that the processing steps of the delay compensation method in the present application may be implemented by a terminal device or a network device.

The Network device may be a Base Station, specifically, a Base Transceiver Station (BTS) and/or a Base Station Controller in Global System for Mobile communication (GSM) or Code Division Multiple Access (CDMA), a Base Station (NodeB, NB) and/or a Radio Network Controller (Radio Network Controller, RNC) in Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB, eNodeB) in Long Term Evolution (Long Term Evolution, LTE), a relay Station or an Access point, or a Base Station (gbb) in a future 5G Network, and the embodiments of the present application are not limited thereto.

The terminal device may be a wireless terminal or a wired terminal. A wireless terminal may refer to a device providing voice and/or other traffic data connectivity to a user, a handheld device having wireless connectivity capabilities, or other processing device connected to a wireless modem. A wireless terminal, which may be a mobile terminal such as a mobile phone (or called a "cellular" phone) and a computer having a mobile terminal, for example, a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more core Network devices via a Radio Access Network (RAN), and exchange languages and/or data with the RAN. For another example, the Wireless terminal may also be a Personal Communication Service (PCS) phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), and other devices. A wireless Terminal may also be referred to as a system, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User Terminal (User Terminal), a User Agent (User Agent), and a User Device or User Equipment (User Equipment), which are not limited herein. Optionally, the terminal device may also be a smart watch, a tablet computer, or the like.

Fig. 4 is a schematic diagram of a delay compensation method provided in the embodiment of the present application, and as shown in fig. 4, the method is explained by taking the method applied to a first device as an example, and the method mainly includes the following steps:

s100, a first device acquires wireless network resources;

the first device may be a terminal device UE or a network device (e.g., a base station gNB).

When the first equipment is UE, the wireless network resource acquired by the first equipment is the wireless network resource configured for the UE by the network equipment;

when the first device is a network device, the wireless network resource acquired by the first device is a wireless network resource configured by the network device for the UE.

Specifically, the network device may configure, for the UE, the SRS Resource and the DL-PRS/CSI-RS Resource of the dedicated period through a Radio Resource Control (RRC) instruction or a Physical Downlink Control Channel (PDCCH) instruction.

For example, a first DL-PRS/CSI-RS resource and a first SRS resource after the network device issues RRC or PDCCH order signaling may be used as a group, and so on to determine a resource group for calculating a time difference; or, the first SRS resource after RRC or PDCCH order signaling and the first DL-PRS/CSI-RS resource are used as a group, and the like to determine the resource group for calculating the time difference.

Fig. 5 is a schematic diagram of DL-PRS/CSI-RS resources and SRS resources used for calculating a time difference in the embodiment of the present application, and as shown in fig. 4, a frame structure is DDDSU, a DL-PRS/CSI-RS resource of a 0 th DL slot and an SRS resource of a 4 th UL slot form a group, and a DL-PRS/CSI-RS resource of a 5 th DL slot and an SRS resource of a 9 th UL slot form a group.

S200, the first equipment determines a first time difference for the first equipment to receive and transmit data through wireless network resources; the first time difference is used for being matched with a second time difference of the second device for receiving and sending data, a transmission delay compensation value of the first device and the second device for data transmission is determined, the second time difference is determined by the second device through wireless network resources, and the transmission delay compensation value is used for executing delay compensation processing of the first device and the second device.

The second device may be a terminal device UE or a network device (e.g., a base station gNB), and the second device is different from the first device.

For example, when the first device is a UE, the second device is a network device; and when the first equipment is network equipment, the second equipment is correspondingly UE.

Specifically, after the UE or the network device acquires the wireless network resource, both the UE and the network device determine a time difference for receiving and sending data by themselves through the wireless network resource, so as to obtain a first time difference for receiving and sending data by the first device and a second time difference for receiving and sending data by the second device.

After the first time difference and the second time difference are obtained, the UE or the network device may determine a transmission delay compensation value for data transmission performed by the UE or the network device according to the two time differences, and thus, the UE or the network device may perform delay compensation processing of the UE or the network device according to the transmission delay compensation value.

Optionally, the content configured by the network device for the UE further includes a compensation manner, specifically including: the delay compensation process is performed by the network device or the delay compensation process is performed by the UE.

It can be understood that, since the time differences determined by the UE and the network device are both corresponding time differences, when one of the time differences performs the delay compensation process, the other needs to transmit the time difference determined by the other to the other.

For example, if the network device indicates that the UE performs the delay compensation process, the network device needs to send the time difference determined by the network device to the UE; on the contrary, if the network device instructs the network device to perform the delay compensation process, the UE needs to send the time difference determined by the UE to the network device.

Optionally, the content configured by the network device for the UE further includes a report (report) mode, which specifically includes: the UE or the network device sends the self-determined time difference in a periodic report manner, or sends the self-determined time difference in a single report (one-shot) manner.

Specifically, when the UE indicates to transmit the time difference in a periodic reporting manner, the first time difference and the second time difference are time differences corresponding to a single radio network resource group, where each radio network resource group includes one SRS resource and one DL-PRS/CSI-RS resource;

or, when the UE instructs to send the self-determined time difference in a single report (one-shot) manner, the first time difference and the second time difference are an average value of a plurality of time differences corresponding to a plurality of radio network resource groups.

The embodiment provides a delay compensation method, after acquiring a wireless network resource, a UE or a network device determines a time difference between itself and its own data receiving and sending through the wireless network resource; based on the time difference corresponding to the UE and the time difference corresponding to the network device, a transmission delay compensation value for data transmission between the UE and the network device may be determined, and according to the transmission delay compensation value, the UE or the network device may perform delay compensation processing between the UE and the network device. Compared with the prior art, the method and the device for improving the time synchronization error accuracy between the UE and the network equipment are beneficial to improving the time synchronization error accuracy, so that the accuracy requirement of a special scene (such as a control to control scene) on the time synchronization error can be met.

The following explains a specific procedure for determining the time difference by the UE and the network device.

In some embodiments, when the first device is a terminal device, determining a first time difference for the first device to receive and transmit data through a wireless network resource includes:

s211, the terminal equipment determines first receiving time for receiving the CSI-RS signal sent by the second equipment;

s212, the terminal equipment determines a first sending time for sending the SRS signal to the second equipment;

s213, the terminal device determines a first time difference according to the first receiving time and the first sending time.

And when the first equipment is terminal equipment, the second equipment is correspondingly network equipment.

Specifically, based on the SRS resource and DL-PRS/CSI-RS resource configured by the network device, the network device first sends a CSI-RS signal to the terminal device, and when the terminal device receives the CSI-RS signal, the terminal device determines a first receiving time corresponding to the CSI-RS signal, which is denoted as t _{UEDL-PRS/CSI-RS} 。

Then, the terminal equipment transmits SRS signals to the network equipment based on the SRS resources and DL-PRS/CSI-RS resources configured by the network equipment, and determines first transmission time corresponding to the SRS signals, and the first transmission time is marked as t _UESRS 。

Finally, the terminal device receives the time t based on the first receiving time _{UEDL-PRS/CSI-RS} And a first transmission time t _UESRS And determining the first time difference corresponding to the terminal equipment.

In some embodiments, determining the first time difference based on the first receive time and the first transmit time comprises: and determining the difference value between the first sending time and the first receiving time as a first time difference.

Specifically, T is set _UEdiff Indicating correspondence of terminal equipment toA time difference is a first time difference T _UEdiff Can be calculated by the following formula:

T _UEdiff ＝t _UESRS -t _{UEDL-PRS/CSI-RS}

therefore, based on the processing flow, in the process that the terminal device performs data transmission with the network device based on the SRS resource and the DL-PRS/CSI-RS resource configured by the network device, the terminal device may determine a time difference corresponding to the terminal device, so as to facilitate the time delay compensation processing between the UE and the network device.

In some embodiments, when the first device is a network device, determining a first time difference for the first device to transceive data through a wireless network resource includes:

s221, the network equipment determines a second sending time for sending the CSI-RS signal to the second equipment;

s222, the network equipment determines a second receiving time for receiving the SRS signal sent by the second equipment;

s223, the network device determines a second time difference according to the second receiving time and the second sending time.

And when the first equipment is network equipment, the second equipment correspondingly serves as terminal equipment.

Specifically, based on the SRS resource and DL-PRS/CSI-RS resource configured by the network device, the network device first transmits a CSI-RS signal to the terminal device, and determines a second transmission time corresponding to the CSI-RS signal, which is denoted as t _{gNBDL-PRS/CSI-RS} 。

Then, the terminal device sends an SRS signal to the network device based on the SRS resource and the DL-PRS/CSI-RS resource configured by the network device, and when the network device receives the SRS signal, the network device determines a second receiving time corresponding to the SRS signal, which is denoted as t _gNBSRS 。

Finally, the network device transmits the time t based on the second transmission time _{gNBDL-PRS/CSI-RS} And a second reception time t _gNBSRS The second time difference corresponding to the network device may be determined.

In some embodiments, determining the second time difference based on the second receive time and the second transmit time comprises: and determining the difference value between the second sending time and the second receiving time as a second time difference.

Specifically, T is set _gNBdiff The second time difference T is the second time difference corresponding to the network equipment _gNBdiff Can be calculated by the following formula:

T _gNBdiff ＝t _gNBSRS -t _{gNBDL-PRS/CSI-RS}

therefore, based on the processing flow, in the process that the network device performs data transmission with the terminal device based on the SRS resource and the DL-PRS/CSI-RS resource configured by the network device, the network device may determine a time difference corresponding to the network device, so as to facilitate the delay compensation processing between the UE and the network device.

In some embodiments, when the network device needs the UE to compensate for the transmission delay or needs to update the transmission delay compensation value, a processing procedure triggering the calculation of the transmission delay compensation by using the PDC dedicated SRS resource and the DL-PRS/CSI-RS resource may be configured by the RRC or PDCCH order.

Fig. 6 is a schematic diagram of transmission delay compensation performed by a network device based on periodic SRS resources and DL-PRS/CSI-RS resources triggered in the embodiment of the present application, as shown in fig. 6, when the network device uses RRC or PDCCH order configuration trigger to calculate transmission delay compensation by using PDC dedicated SRS resources and DL-PRS/CSI-RS resources:

(1) The UE calculates the receiving and sending time difference at the UE side according to the special SRS resource configured by the network equipment and the corresponding DL-PRS/CSI-RS resource:

T _UEdiff ＝t _UESRS -t _{UEDL-PRS/CSI-RS}

wherein, t _{UEDL-PRS/CSI-RS} After the RRC/PDCCH order configuration signaling is received for the UE, according to a resource group and a DL-PRS/CSI-RS resource which are paired by a predetermined SRS resource and a DL-PRS/CSI-RS resource, the time when the UE receives a DL-PRS/CSI-RS signal; t is t _UESRS And sending SRS signals to the network equipment for the UE according to the predetermined SRS resource group and the resource group matched with the DL-PRS/CSI-RS resource and the SRS resource.

(2) The network equipment calculates the receiving and sending time difference of the network side:

T _gNBdiff ＝t _gNBSRS -t _{gNBDL-PRS/CSI-RS}

wherein, t _{gNBDL-PRS/CSI-RS} The time when the network equipment sends DL-PRS/CSI-RS signals to the UE according to the preset SRS resource and the resource group matched with the DL-PRS/CSI-RS resource and the DL-PRS/CSI-RS resource; t is t _gNBSRS And the network equipment receives the SRS signal sent by the UE according to the predetermined SRS resource and the resource group matched with the DL-PRS/CSI-RS resource and the SRS resource.

s311, the terminal device receives a first indication message sent by the second device, wherein the first indication message is used for indicating the terminal device to execute delay compensation processing;

s312, the terminal equipment receives a second time difference sent by the second equipment;

s313, the terminal equipment determines a transmission delay compensation value according to the first time difference and the second time difference;

and S314, the terminal equipment executes time delay compensation processing based on the transmission time delay compensation value.

Specifically, based on a compensation mode configured by the network device, if the network device indicates that the UE performs compensation, the network device first sends a first indication message to the UE, where the first indication message is used to indicate that the terminal device performs delay compensation processing;

after receiving the first indication message, the UE further receives a second time difference sent by the network device, where the second time difference is a time difference corresponding to the network device, so that the terminal device may determine a propagation delay compensation value based on the time difference corresponding to the network device and the time difference corresponding to the terminal device, and perform a delay compensation process based on the propagation delay compensation value.

Optionally, the network device may send a time difference corresponding to the network device to the UE through a MAC CE (MAC Control Element), where the time difference is about 21-bit quantization value, and a granularity of the time difference is 1Tc to 32Tc.

In some embodiments, the determining, by the terminal device, the transmission delay compensation value according to the first time difference and the second time difference includes: determining a propagation delay compensation value by the following formula:

where Δ T denotes a transmission delay compensation value, T1 denotes a first time difference, and T2 denotes a second time difference. Specifically, when the first device is a terminal device and the second device is a network device, T1 corresponds to a time difference of the terminal device, and T2 corresponds to a time difference of the network device.

Therefore, based on the processing flow, the terminal device can determine the transmission delay compensation value according to the time difference of the terminal device and the time difference of the network device, and further execute the delay compensation processing according to the transmission delay compensation value, so that the precision of the time synchronization error between the UE and the network device is improved.

s321, receiving a second indication message sent by the second device, where the second indication message is used to indicate that the network device executes the delay compensation process;

s322, sending a notification message including the first time difference to the second device, where the notification message is used to instruct the network device to determine a transmission delay compensation value according to the first time difference and the second time difference, and perform a delay compensation process based on the transmission delay compensation value.

Specifically, based on the compensation mode configured by the network device, if the network device indicates that the network device performs compensation, the network device first sends a second indication message to the UE, where the second indication message is used to indicate that the network device performs delay compensation processing;

after receiving the second indication message, the UE further sends a notification message including a first time difference to the second device, where the first time difference is a time difference corresponding to the terminal device, so that, based on the time difference corresponding to the network device and the time difference corresponding to the terminal device, the network device may determine a propagation delay compensation value, and perform delay compensation processing based on the propagation delay compensation value.

It can be understood that, after determining the transmission delay compensation value, the network device performs the delay compensation process based on the transmission delay compensation value, or sends the calculated transmission delay compensation value to the UE, and the UE performs the subsequent process.

Optionally, the terminal device may send a time difference corresponding to the terminal device to the network device through a MAC CE (MAC Control Element), where the time difference is about 21-bit quantized value, and a granularity of the time difference is 1Tc to 32Tc.

In some embodiments, the network device determines the transmission delay compensation value according to the first time difference and the second time difference, and includes: determining a propagation delay compensation value by the following formula:

Therefore, based on the processing flow, the network device may determine the transmission delay compensation value according to the time difference of the terminal device and the time difference of the network device, and then perform the delay compensation processing according to the transmission delay compensation value, thereby improving the accuracy of the time synchronization error between the UE and the network device.

In some embodiments, the delay compensation process may also be triggered by the UE.

Fig. 7 is a schematic diagram of performing transmission delay compensation on periodic SRS resources and DL-PRS/CSI-RS resources triggered by a terminal device in the embodiment of the present application, as shown in fig. 7, when the terminal device needs to compensate transmission delay or needs to update a transmission delay compensation value, a Scheduling Request (SR) based on PDC, that is, SR for PDC in the diagram, may be sent to a network device, and after the network device receives the SR, the network device configures and triggers a processing flow of calculating transmission delay compensation by using PDC-dedicated SRS resources and DL-PRS/CSI-RS resources through an RRC or PDCCH order.

Optionally, the SR resource triggered by the network device configuring the dedicated PD measurement through the RRC includes schedulingRequestResource and periodicityAndOffset.

It can be understood that, in this embodiment, a processing procedure of performing transmission delay compensation by the UE and the network device is similar to the processing procedure in the foregoing embodiment, and is not described herein again.

In some embodiments, the UE or the network device may also calculate and compensate for the propagation delay using the semi-persistent SRS resources and the DL-PRS/CSI-RS resources.

In this embodiment, when the network device configures the UE with the dedicated semi-persistent SRS resource and the DL-PRS/CSI-RS resource, the reporting mode, the compensation mode, and other information through the RRC or PDCCH order, the UE and the network device do not perform data transmission on the SRS resource and the DL-PRS/CSI-RS resource, but need to perform data transmission after being triggered by the UE or the network device, and perform the propagation delay compensation procedure.

In some embodiments, determining a first time difference for the first device to transceive data over the wireless network resources comprises:

after receiving a third indication message sent by the second device, determining a first time difference for the first device to receive and send data through wireless network resources; and the third indication message is used for indicating that the delay compensation function is triggered.

For example, when the first device is a UE and the second device is a network device, the network device may send a third indication message triggering the delay compensation function to the UE, so that the UE starts to execute the propagation delay compensation procedure after receiving the third indication message.

For another example, when the first device is a network device and the second device is a UE, the UE may send a third indication message triggering the delay compensation function to the network device, so that the network device starts to execute the propagation delay compensation procedure after receiving the third indication message.

In this embodiment, when determining the radio network resource, the UE or the network device may use the first DL-PRS/CSI-RS resource and the first SRS resource after the third indication message is sent as a group, and so on to determine the resource group for calculating the time difference.

Fig. 8 is a schematic diagram of transmission delay compensation performed based on a semi-persistent SRS resource and a DL-PRS/CSI-RS resource triggered by a network device in the embodiment of the present application, and as shown in fig. 8, after the network device configures the semi-persistent SRS resource and the DL-PRS/CSI-RS resource for a UE, the UE and the network device do not perform a propagation delay compensation procedure based on the SRS resource and the DL-PRS/CSI-RS resource.

After the network device sends the third indication message (i.e. PDCCH trigger in the figure) to the UE, the UE and the network device start to perform a propagation delay compensation procedure based on the SRS resource and the DL-PRS/CSI-RS resource.

It can be understood that, in this embodiment, a processing procedure in which the UE and the network device execute the propagation delay compensation procedure based on the SRS resource and the DL-PRS/CSI-RS resource is similar to the processing procedure in the foregoing embodiment, and is not described herein again.

Fig. 9 is a schematic diagram of performing transmission delay compensation by a terminal device using a semi-persistent SRS resource and a DL-PRS/CSI-RS resource triggered by an SRS in the embodiment of the present application, and as shown in fig. 9, after a network device configures the semi-persistent SRS resource and the DL-PRS/CSI-RS resource for a UE, the UE and the network device do not perform a propagation delay compensation procedure based on the SRS resource and the DL-PRS/CSI-RS resource.

After the UE sends the third indication message (i.e. SRS for PDC trigger in the figure) to the network device, the UE and the network device start to perform a propagation delay compensation procedure based on the SRS resource and the DL-PRS/CSI-RS resource.

If the UE determines that a propagation delay compensation function needs to be triggered, the UE sends SRS signals on configured semi-continuous SRS resources, the network equipment sends DL-PRS/CSI-RS on corresponding DL-PRS/CSI-RS resources after receiving the SRS signals, at the moment, the network equipment needs to monitor each SRS occase to determine whether the UE triggers a time difference measurement process, once the UE sends the SRS signals, the UE continuously sends the SRS signals on subsequent SRS occases, and after receiving the SRS signals, the network equipment continuously sends DL-PRS/CSI-RS on the subsequent DL-PRS/CSI-RS occases, so that the UE and the network equipment execute a propagation delay compensation process according to the SRS resources and DL-PRS/CSI-RS resource groups in advance.

Fig. 10 is a schematic diagram of transmission delay compensation performed by a terminal device using SR-triggered semi-persistent SRs resources and DL-PRS/CSI-RS resources in this embodiment, and as shown in fig. 10, a network device configures, by RRC, dedicated PD measurement triggered SR resources for a UE, including schedulingRequestResource and periodicityAndOffset.

When the UE sends the SR on the SR resource triggered by the special PD measurement, the network equipment uses the DCI to instruct the UE to use the semi-continuous SRS and the DL-PRS/CSI-RS to configure the time difference of resource measurement data transmission, so that the UE and the network equipment send the SRS signal and the DL-PRS/CSI-RS signal through the semi-continuous SRS and the DL-PRS/CSI-RS resource to execute a propagation delay compensation process.

In some embodiments, the network device may also set a Hybrid (Hybrid) mode in which the propagation delay compensation function is triggered by either the UE or the network device for a set of semi-persistent SRS resources and DL-PRS/CSI-RS resource configurations.

It should be understood that, although the respective steps in the flowcharts in the above-described embodiments are sequentially shown as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and may be performed in other orders unless explicitly stated herein. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, in different orders, and may be performed alternately or at least partially with respect to other steps or sub-steps of other steps.

In some embodiments, based on the technical solutions of the foregoing method embodiments, a delay compensation device is provided and applied to a first device.

Fig. 11 is a schematic diagram of a delay compensation device according to an embodiment of the present application, and as shown in fig. 11, the delay compensation device includes a memory 71, a transceiver 72, and a processor 73, where:

acquiring wireless network resources;

receiving the second time difference sent by the second device;

determining a propagation delay compensation value by the following formula:

where Δ T denotes a transmission delay compensation value, T1 denotes a first time difference, and T2 denotes a second time difference.

alternatively, the first and second liquid crystal display panels may be,

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the method embodiment and achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as the method embodiment in this embodiment are omitted here.

In some embodiments, based on the technical solutions of the foregoing method embodiments, a delay compensation apparatus is provided and applied to a first device.

Fig. 12 is a schematic diagram of a delay compensation apparatus applied to a first device according to an embodiment of the present application, and as shown in fig. 12, the apparatus includes:

an obtaining module 81, configured to obtain a wireless network resource;

a determining module 82, configured to determine a first time difference for the first device to receive and transmit data through the wireless network resource;

determining a second receiving time for receiving the SRS sent by the second equipment;

receiving the second time difference sent by the second device;

determining a propagation delay compensation value by the following formula:

alternatively, the first and second electrodes may be,

In the above devices, the memory and the processor are electrically connected, directly or indirectly, to enable transmission or interaction of data. For example, the components may be electrically connected to each other via one or more communication buses or signal lines, such as may be provided via a bus. The memory stores computer-executable instructions for implementing the data access control method, and includes at least one software functional module which can be stored in the memory in the form of software or firmware, and the processor executes various functional applications and data processing by running the software programs and modules stored in the memory.

The Memory may be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read Only Memory (PROM), an Erasable Read Only Memory (EPROM), an electrically Erasable Read Only Memory (EEPROM), and the like. The memory is used for storing programs, and the processor executes the programs after receiving the execution instructions. Further, the software programs and modules within the aforementioned memories may also include an operating system, which may include various software components and/or drivers for managing system tasks (e.g., memory management, storage device control, power management, etc.), and may communicate with various hardware or software components to provide an operating environment for other software components.

The processor may be an integrated circuit chip having signal processing capabilities. The Processor may be a general-purpose Processor including a Central Processing Unit (CPU), a Network Processor (NP), and the like. The various methods, steps, and logic blocks disclosed 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.

In some embodiments, a computer-readable storage medium is provided having computer-executable instructions stored therein for performing the steps of the method embodiments of the present application when executed by a processor.

In some embodiments, a computer program product is provided, comprising a computer program which, when executed by a processor, performs the steps of the method embodiments of the present application.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware related to instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, the computer program can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), rambus (Rambus) direct RAM (RDRAM), direct Rambus Dynamic RAM (DRDRAM), and Rambus Dynamic RAM (RDRAM), among others.

Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice in the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A time delay compensation method is applied to a first device and comprises the following steps:

acquiring wireless network resources;

2. The method of claim 1, wherein the radio network resources comprise Sounding Reference Signal (SRS) resources and downlink reference signal (DL-PRS)/channel state information (CSI-RS) resources.

3. The method of claim 2, wherein determining a first time difference for the first device to transceive data through the wireless network resource when the first device is a terminal device comprises:

4. The method of claim 3, wherein determining the first time difference based on the first receiving time and the first transmitting time comprises:

5. The method as claimed in claim 2, wherein determining a first time difference for the first device to transceive data via the wireless network resource when the first device is a network device comprises:

6. The method of claim 5, wherein determining the second time difference based on the second receive time and the second transmit time comprises:

7. The method according to claim 1, wherein when the first device is a terminal device and the second device is a network device, the method further comprises:

receiving the second time difference sent by the second device;

8. The method according to claim 1, wherein when the first device is a terminal device and the second device is a network device, the method further comprises:

9. The method of claim 7 or 8, wherein determining the propagation delay compensation value according to the first time difference and the second time difference comprises:

determining a propagation delay compensation value by the following formula:

10. The method of any one of claims 1-8, wherein determining a first time difference for the first device to transceive data over the wireless network resource comprises:

wherein the third indication message is used for indicating that a delay compensation function is triggered.

11. The method of claim 10,

when the second device is a terminal device, the third indication message includes an uplink scheduling request SR or a sounding reference signal SRs;

12. The method of any one of claims 1-8, wherein the first time difference and the second time difference are time differences corresponding to a single set of radio network resources, wherein each set of radio network resources comprises one SRS resource and one DL-PRS/CSI-RS resource;

alternatively, the first and second electrodes may be,

13. A delay compensation device, for use in a first device, comprising a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following:

acquiring wireless network resources;

14. The apparatus of claim 13, wherein the radio network resources comprise Sounding Reference Signal (SRS) resources and downlink reference signal (DL-PRS)/channel state information reference signal (CSI-RS) resources.

15. The apparatus of claim 14, wherein when the first device is a terminal device, determining a first time difference for the first device to receive and transmit data through the wireless network resource comprises:

16. The apparatus of claim 15, wherein determining the first time difference based on the first receive time and the first transmit time comprises:

17. The device of claim 14, wherein when the first device is a network device, determining a first time difference for the first device to receive and transmit data via the wireless network resource comprises:

18. The apparatus of claim 17, wherein determining the second time difference based on the second receive time and the second transmit time comprises:

19. The apparatus according to claim 13, wherein when the first device is a terminal device and the second device is a network device, the apparatus further comprises:

receiving the second time difference sent by the second device;

20. The device according to claim 13, wherein when the first device is a terminal device and the second device is a network device, the device further comprises:

21. The apparatus of claim 19 or 20, wherein determining the propagation delay compensation value according to the first time difference and the second time difference comprises:

determining a propagation delay compensation value by the following formula:

22. The device of any one of claims 13-20, wherein determining a first time difference for transceiving data by a first device via the wireless network resource comprises:

23. The apparatus of claim 22,

24. The apparatus of any one of claims 13-20, wherein the first time difference and the second time difference are time differences corresponding to a single set of radio network resources, wherein each set of radio network resources comprises one SRS resource and one DL-PRS/CSI-RS resource;

alternatively, the first and second electrodes may be,

25. A delay compensation apparatus, applied to a first device, comprising:

the acquisition module is used for acquiring wireless network resources;

26. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1-12.