CN115707082A

CN115707082A - Method and device for processing transmission delay

Info

Publication number: CN115707082A
Application number: CN202110896581.1A
Authority: CN
Inventors: 汤文
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2023-02-17

Abstract

The invention provides a processing method and a processing device for transmission delay, which solve the problem of updating various transmission delays in a satellite communication system. The method of the invention comprises the following steps: receiving time delay updating indication information; updating the transmission delay in the feed link according to the delay updating indication information; wherein the transmission delay in the feeder link includes at least two of a first transmission delay, a second transmission delay, and a third transmission delay; the first transmission delay is a transmission delay between a satellite and a reference point in a feeder link of the satellite communication system; the second transmission delay is the transmission delay between a reference point in the feeder link and the base station; the third transmission delay is a transmission delay between a satellite and a base station in the feeder link. The embodiment of the invention can update a plurality of transmission delays in the feed link and effectively ensure the accuracy of uplink data transmission.

Description

Processing method and device for transmission delay

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for processing transmission delay.

Background

A mobile communication system (hereinafter referred to as a satellite communication system) based on Geosynchronous Orbit (GEO) satellites or Low Earth Orbit (LEO) has a wide area coverage advantage that a terrestrial mobile communication system is incomparable with, and has become an important development direction. The satellite communication system can adopt a transparent relay forwarding or on-board regeneration signal processing mode. Each ground node of the satellite communication system communicates by means of a satellite, and compared with the ground communication system, the height of a satellite with different orbits from the ground brings larger propagation delay. As the satellite changes, the transmission delay in the satellite communication system is also constantly changing, and there is no relevant solution for how to update the multiple transmission delays in the satellite communication system.

Disclosure of Invention

The invention aims to provide a method and a device for processing transmission delay, which are used for solving the problem of updating various transmission delays in a satellite communication system.

In order to achieve the above object, the present invention provides a method for processing a transmission delay, which is applied to a terminal and includes:

receiving time delay updating indication information;

updating the transmission delay in the feed link according to the delay updating indication information;

wherein the transmission delay in the feeder link comprises at least two of a first transmission delay, a second transmission delay, and a third transmission delay;

the first transmission delay is a transmission delay between a satellite and a reference point in a feeder link of the satellite communication system;

the second transmission delay is the transmission delay between a reference point in the feeder link and the base station;

the third transmission delay is a transmission delay between a satellite and a base station in the feeder link.

Optionally, the delay update indication information includes a delay change rate;

or the delay updating indication information includes a delay change rate and an indication variable, where the indication variable is used to indicate a transmission delay type corresponding to the delay change rate, and the transmission delay type includes the first transmission delay or the second transmission delay;

or, the delay update indication information includes a delay change rate and a ratio value, where the ratio value is used to indicate ratio information of the first transmission delay and the second transmission delay in the feeder link.

Optionally, when the delay update indication information includes a delay change rate;

updating the transmission delay in the feeder link according to the delay updating indication information, including:

determining a first target transmission delay type corresponding to a delay change rate according to a corresponding relation between the delay change rate and the transmission delay type specified by a protocol;

and updating the transmission delay in the feeder link according to the first target transmission delay type and the delay change rate.

Optionally, updating the transmission delay in the feeder link according to the first target transmission delay type and the delay change rate includes:

under the condition that the first target transmission delay type is a first transmission delay, updating a first transmission delay and a third transmission delay according to the delay change rate, wherein the change value of the first transmission delay is the same as that of the third transmission delay;

and under the condition that the first target transmission delay type is a second transmission delay, updating a second transmission delay and a third transmission delay according to the delay change rate, wherein the change value of the second transmission delay is the same as the change value of the third transmission delay.

under the condition that the first transmission delay is 0 or default, updating a second transmission delay and a third transmission delay according to the delay change rate, wherein the change value of the second transmission delay is the same as that of the third transmission delay;

and under the condition that the second transmission delay is 0 or is in a default state, updating the first transmission delay and the third transmission delay according to the delay change rate, wherein the change value of the first transmission delay is the same as the change value of the third transmission delay.

Optionally, updating the first transmission delay and the third transmission delay according to the delay change rate includes:

updating the first transmission Delay and the third transmission Delay through a formula Delay1_ new = Delay1_ old + drift T1; wherein Delay1_ new represents the first transmission Delay or the third transmission Delay after updating, delay1_ old represents the first transmission Delay or the third transmission Delay before updating, drift represents the Delay change rate, and T1 represents the time interval between two times of updating of the first transmission Delay or the time interval between two times of updating of the third transmission Delay;

or, updating the second transmission delay and the third transmission delay according to the delay change rate, including:

updating the second transmission Delay and the third transmission Delay through a formula Delay2_ new = Delay2_ old + drift T2; delay2_ new represents the updated second transmission Delay or the third transmission Delay, delay2_ old represents the second transmission Delay or the third transmission Delay before updating, drift represents the Delay change rate, and T2 represents the time interval between two updates of the second transmission Delay or the time interval between two updates of the third transmission Delay.

Optionally, when the delay update indication information includes a delay change rate and an indication variable;

under the condition that the transmission type corresponding to the delay change rate indicated by the indication variable is the first transmission delay, updating the first transmission delay, and updating the third transmission delay according to the updated first transmission delay;

and under the condition that the transmission type corresponding to the time delay change rate indicated by the indication variable is a second transmission time delay, updating the second transmission time delay, and updating a third transmission time delay according to the updated second transmission time delay.

Optionally, updating the first transmission delay, and updating the third transmission delay according to the updated first transmission delay, including:

updating the first transmission Delay through a formula Delay3_ new = Delay3_ old + drift T3, and through Delay4_ new = Delay3_ new + K _ mac, wherein Delay3_ new represents the first transmission Delay after updating, delay3_ old represents the first transmission Delay before updating, drift represents the Delay change rate, and T3 represents the time interval between two times of updating of the first transmission Delay; delay4_ new represents the updated third transmission Delay, and K _ mac represents the second transmission Delay;

or, updating the second transmission delay, and updating the third transmission delay according to the updated second transmission delay, including:

updating the second transmission Delay through a formula of Delay5_ new = Delay5_ old + drift × T4, and through Delay6_ new = Delay5_ new + Common Delay, wherein Delay5_ new represents the updated second transmission Delay, delay5_ old represents the second transmission Delay before updating, drift represents the Delay change rate, and T4 represents the time interval between two updates of the second transmission Delay; delay6_ new represents the updated third transmission Delay, and Common Delay represents the first transmission Delay.

Optionally, when the delay updating indication information includes a delay change rate and a proportion value;

and updating the third transmission delay according to the delay change rate, and respectively updating the first transmission delay and the second transmission delay according to the updated third transmission delay and the proportion value.

Optionally, updating a third transmission delay according to the delay change rate, and updating the first transmission delay and the second transmission delay according to the updated third transmission delay and the ratio value, respectively, includes:

updating the third transmission Delay by a formula of Delay7_ new = Delay7_ old + drift T5, updating the first transmission Delay according to Delay8_ new = 1/(1 + X) < Delay7_ new, and updating the second transmission Delay according to Delay9_ new = X/(1 + X) < Delay7_ new;

wherein Delay7_ new represents the updated third transmission Delay, delay7_ old represents the third transmission Delay before updating, drift represents the Delay change rate, and T5 represents the time interval between two updates of the third transmission Delay; delay8_ new represents the updated first transmission Delay, delay9_ new represents the updated second transmission Delay, and X represents the proportional value.

Optionally, the receiving of the delay update indication information includes:

and periodically receiving the time delay updating indication information according to the updating period of the time delay updating indication information.

The embodiment of the invention also provides a processing method of transmission delay, which is applied to a base station and comprises the following steps:

transmitting time delay updating indication information, wherein the time delay updating indication information is used for updating transmission time delay in a feed link of a satellite communication system;

or the delay updating indication information comprises a delay change rate and an indication variable, the indication variable is used for indicating a transmission delay type corresponding to the delay change rate, and the transmission delay type comprises a first transmission delay or a second transmission delay;

or, the delay update indication information includes a delay change rate and a ratio value, where the ratio value is used to indicate ratio information of a first transmission delay and a second transmission delay in the feeder link.

Optionally, the sending of the delay update indication information includes:

and periodically sending the time delay updating indication information according to the updating period of the time delay updating indication information.

The embodiment of the invention also provides a processing device of the transmission time delay, which comprises a memory, a transceiver and 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:

controlling the transceiver to receive the time delay updating indication information;

the processor executes the step of updating the transmission delay in the feeder link according to the delay updating indication information, and the step includes:

Optionally, the step of the processor updating the transmission delay in the feeder link according to the first target transmission delay type and the delay change rate includes:

under the condition that the first target transmission delay type is first transmission delay, updating first transmission delay and third transmission delay according to the delay change rate, wherein the change value of the first transmission delay is the same as that of the third transmission delay;

Optionally, when the latency update indication information includes a latency change rate;

and under the condition that the second transmission delay is 0 or is default, updating the first transmission delay and the third transmission delay according to the delay change rate, wherein the change value of the first transmission delay is the same as the change value of the third transmission delay.

Optionally, the step of the processor updating the first transmission delay and the third transmission delay according to the delay change rate includes:

updating the first transmission Delay and the third transmission Delay through a formula Delay1_ new = Delay1_ old + drift T1; wherein Delay1_ new represents the first transmission Delay or the third transmission Delay after updating, delay1_ old represents the first transmission Delay or the third transmission Delay before updating, drift represents the Delay change rate, and T1 represents the time interval between two updates of the first transmission Delay or the time interval between two updates of the third transmission Delay;

updating the second transmission Delay and the third transmission Delay through a formula Delay2_ new = Delay2_ old + drift T2; wherein Delay2_ new represents the updated second transmission Delay or third transmission Delay, delay2_ old represents the second transmission Delay or third transmission Delay before updating, drift represents the Delay change rate, and T2 represents the time interval between two updates of the second transmission Delay or the time interval between two updates of the third transmission Delay.

the processor performs the step of updating the transmission delay in the feeder link according to the delay updating indication information, and the step includes:

under the condition that the transmission type corresponding to the time delay change rate indicated by the indication variable is a first transmission time delay, updating the first transmission time delay, and updating a third transmission time delay according to the updated first transmission time delay;

and under the condition that the transmission type corresponding to the delay change rate indicated by the indication variable is the second transmission delay, updating the second transmission delay, and updating the third transmission delay according to the updated second transmission delay.

Optionally, the step of the processor updating the first transmission delay and updating the third transmission delay according to the updated first transmission delay includes:

updating the second transmission Delay through a formula of Delay5_ new = Delay5_ old + drift × T4, and through Delay6_ new = Delay5_ new + Common Delay, where Delay5_ new represents the updated second transmission Delay, delay5_ old represents the second transmission Delay before updating, drift represents the Delay change rate, and T4 represents the time interval between two updates of the second transmission Delay; delay6_ new represents the updated third transmission Delay and Common Delay represents the first transmission Delay.

Optionally, when the delay update indication information includes a delay change rate and a ratio value;

Optionally, the step of the processor updating the third transmission delay according to the delay change rate, and updating the first transmission delay and the second transmission delay according to the updated third transmission delay and the ratio value respectively includes:

updating the third transmission Delay through a formula Delay7_ new = Delay7_ old + drift T5, updating the first transmission Delay according to Delay8_ new = 1/(1 + X) } Delay7_ new, and updating the second transmission Delay according to Delay9_ new = X/(1 + X) } Delay7_ new;

Optionally, the controlling, by the processor, the transceiver to receive the delay update indication information includes:

and controlling the transceiver to periodically receive the time delay updating indication information according to the updating period of the time delay updating indication information.

The embodiment of the invention also provides a processing device of the transmission delay, which comprises a memory, a transceiver and a processor;

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

controlling a transceiver to transmit time delay updating indication information, wherein the time delay updating indication information is used for updating transmission time delay in a feed link of a satellite communication system;

wherein the transmission delay in the feeder link includes at least two of a first transmission delay, a second transmission delay, and a third transmission delay;

Optionally, the delay updating indication information includes a delay change rate;

The embodiment of the invention also provides a processing device of transmission delay, which is applied to a terminal and comprises the following steps:

a first receiving unit, configured to receive delay updating indication information;

the first processing unit is used for updating the transmission delay in the feeder link according to the delay updating indication information;

An embodiment of the present invention further provides a device for processing transmission delay, which is applied to a base station, and includes:

a first sending unit, configured to send delay update indication information, where the delay update indication information is used to update transmission delay in a feeder link of a satellite communication system;

An embodiment of the present invention further provides a processor-readable storage medium, where the processor-readable storage medium stores program instructions, and the program instructions are configured to enable the processor to execute the steps of the processing method for transmission delay as described above.

The technical scheme of the invention at least has the following beneficial effects:

according to the scheme of the embodiment of the invention, time delay updating indication information is received; according to the time delay updating indication information, the transmission time delay in the feed link is updated, for example, at least two time delays of the transmission time delay between the satellite and the reference point in the feed link of the satellite communication system, the transmission time delay between the reference point and the base station in the feed link and the transmission time delay between the satellite and the base station are updated, so that the accuracy of uplink data transmission can be effectively ensured.

Drawings

FIG. 1 is a block diagram of a satellite communications system to which embodiments of the present invention are applicable;

FIG. 2 is a schematic time delay diagram of a satellite communication system according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a method for processing transmission delay according to an embodiment of the present invention;

fig. 4 is a second flowchart illustrating a method for processing propagation delay according to an embodiment of the invention;

fig. 5 is a block diagram showing a configuration of a transmission delay processing apparatus according to an embodiment of the present invention;

fig. 6 is a second block diagram of a latency processing apparatus according to an embodiment of the present invention;

fig. 7 is a block diagram of a processing apparatus for delay transmission according to an embodiment of the present invention;

fig. 8 is a second block diagram of a transmission delay processing apparatus according to an embodiment of the invention.

Detailed Description

The technical scheme provided by the embodiment of the invention can be suitable for various systems, particularly 5G systems. For example, the applicable System may be a Global System For Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a Time Division Synchronous CDMA (Time Division Multiple Access, TD-SCDMA) System, a General Packet Radio Service (GPRS) System, a Long Term Evolution (Long Term Evolution, LTE) System (including TD-LTE and FDD LTE), a Long Term Evolution (Long Term Evolution, LTE-a) System, a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability For Microwave Access (WiMAX) System, a New Radio Access (NR 5, new Radio interface (NR) System, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5 GS/5 GC), and the like.

In satellite communication, there are two working modes, one is a bent pipe mode, the satellite 13 only transparently forwards signals without any processing, the terminal 11 communicates with the base station 12, and the other is regenerative communication, at this time, the satellite 13 can detect the information of the received signals, process and forward the information, complete the function of the base station 12, and connect the terminal 11 and the base station 12. In satellite communications, the connection between the end user and the satellite is referred to as the user link, and the connection between the satellite and the base station is the feeder link. A time delay diagram for a satellite communication system is listed in fig. 1. The terminal 11 may also be referred to as a terminal or a User Equipment (UE). It should be noted that the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Personal Computer) or a terminal side Device called a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, an Ultra-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle mounted Device (VUE), a pedestrian terminal (PUE), and the like, where the Wearable Device includes: bracelets, earphones, glasses and the like. It should be noted that the embodiment of the present invention does not limit the specific type of the terminal 11. A Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a home evolved node B, a WLAN access Point, a WiFi node, a Transmit Receive Point (TRP), or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that only a Base Station in an NR system is taken as an example in the present embodiment, but a specific type of the Base Station is not limited.

For bent-tube communication, when performing data communication, the terminal and the base station experience a transmission delay T2 of a feeder link and a transmission delay T1 of a user link, and a Round Trip Time (RTT) of transmission is 2 × T1+ T2. In the regenerative communication mode, the terminal and satellite transmission delays comprise the transmission delay T1 of the subscriber link, the RTT of which is 2 × T1. In a satellite communication system, in consideration of the fact that a terminal needs to perform timing advance transmission and the transmission delay of satellite communication is large in a place different from ground mobile communication, table 1 below shows the RTT when the heights of orbiting satellites are different.

TABLE 1

Under the condition of larger time delay, in order to ensure the timing synchronization of a satellite communication system, a terminal needs to perform timing advance, and at present, a 3GPP conference agrees that the terminal at least needs to perform timing advance on the time delay from the terminal to a reference point. Fig. 2 shows the distribution of the current reference point-based time delays. The reference point is a position arranged on the link, so that the time delay of the feeder link can be conveniently applied in the process of enhancing the time sequence relation. The time delay from the terminal to the satellite is ServiceLink RTT = UE _ specific TA, the time delay from the satellite to the reference point is Common delay, and the time delay from the reference point to the base station is K _ mac, where the time delay from the satellite to the base station is FeederLink RTT = Common delay + K _ mac.

The embodiment of the invention provides a method for processing transmission delay based on a bent pipe communication mode, wherein the method is used for strengthening the uplink and downlink scheduling time sequence relation in satellite communication because the satellite communication has larger transmission delay.

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 only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

As shown in fig. 3, the method for processing transmission delay according to the embodiment of the present invention is applied to a terminal, and includes:

step 301: and receiving time delay updating indication information.

In this step, the time delay update indication Information may be received through a Master Information Block (MIB) or a System Information Block (SIB). The delay updating indication information is used for updating the transmission delay in the feeder link.

Optionally, the receiving of the delay update indication information includes:

Step 302: and updating the transmission delay in the feeder link according to the delay updating indication information.

the first transmission delay is a transmission delay between a satellite and a reference point in a feeder link of the satellite communication system, which may also be described as Common delay;

the second transmission delay is a transmission delay between a reference point in the feeder link and the base station, and the second transmission delay can also be described as K _ mac;

the third transmission delay is a transmission delay between the satellite and the base station in the feeder link, and the third transmission delay may also be described as a FeederLink RTT.

For the setting of the reference point, it is mainly considered to be located on the feeder link, common delay is a positive value when the reference point is located on the feeder link, and Common delay is a negative value when the reference point is located on the service link, in the embodiment of the present application, the above-mentioned reference point is mainly selected in consideration of the following situations:

the length from the reference point to the base station is fixed;

the length from the reference point to the satellite is fixed;

the reference point divides the FeederLink RTT into two segments with fixed proportions.

The transmission delay processing method of the embodiment of the invention receives delay updating indication information; and updating the transmission delay in the feed link according to the delay updating indication information, for example, updating at least two of the transmission delay between the satellite and the reference point in the feed link of the satellite communication system, the transmission delay between the reference point and the base station in the feed link and the transmission delay between the satellite and the base station, so that the accuracy of uplink data transmission can be effectively ensured.

Optionally, the delay update indication information includes a delay change rate drift;

or, the delay updating indication information includes a delay change rate and an indication variable, where the indication variable is used to indicate a transmission delay type corresponding to the delay change rate, and the transmission delay type includes a first transmission delay or a second transmission delay, for example, a transmission delay type corresponding to the delay change rate is indicated by 1 bit;

or the delay updating indication information includes a delay change rate and a ratio value, where the ratio value is used to indicate ratio information of a first transmission delay and a second transmission delay in the feeder link.

In the embodiment of the present invention, the delay variation rate may also be described as a delay variation parameter. In the embodiment of the present invention, a transmission delay type corresponding to the delay variation rate may be specified in advance through a protocol, and at this time, the delay update indication information may only include the delay variation rate; or, in the embodiment of the present invention, a transmission delay type corresponding to a delay variation rate may not be specified through a protocol, at this time, the delay update indication information may only include the delay variation rate, and notify the terminal that the first transmission delay is 0 (the default indicates that the value is 0), the transmission delay type corresponding to the delay variation rate is set as the second transmission delay by default, or notify the terminal that the second transmission delay is 0 (the default indicates that the value is 0), the transmission delay type corresponding to the delay variation rate is set as the first transmission delay by default; or, in the embodiment of the present invention, the transmission delay type corresponding to the delay variation rate is not specified through a protocol, and at this time, the delay update indication information includes the delay variation rate and a ratio value.

As a first optional implementation manner, when the delay updating indication information includes a delay change rate (in this implementation manner, a corresponding relationship between the delay change rate and a transmission delay is agreed by a protocol);

Further, updating the transmission delay in the feeder link according to the first target transmission delay type and the delay change rate includes:

Further, updating the first transmission delay and the third transmission delay according to the delay change rate includes:

As a second optional implementation manner, when the delay update indication information includes a delay change rate (in this implementation manner, the first transmission delay is 0 or default, at this time, the transmission delay type corresponding to the default delay change rate is the second transmission delay, or the second transmission delay is 0 or default, at this time, the transmission delay type corresponding to the default delay change rate is the first transmission delay, where the default indicates that the corresponding delay value is 0);

As a third optional implementation manner, when the delay update indication information includes a delay change rate and an indication variable (in this implementation manner, a transmission delay type corresponding to the delay change rate is indicated by the indication variable, and the network indicates that the initial first transmission delay and the second transmission delay are not 0);

updating the first transmission Delay through a formula of Delay3_ new = Delay3_ old + drift × T3, and through Delay4_ new = Delay3_ new + K _ mac, wherein Delay3_ new represents the first transmission Delay after updating, delay3_ old represents the first transmission Delay before updating, drift represents the Delay change rate, and T3 represents the time interval between two updates of the first transmission Delay; delay4_ new represents the updated third transmission Delay, and K _ mac represents the second transmission Delay;

As a fourth optional implementation manner, when the delay update indication information includes a delay change rate and a proportional value (in this implementation manner, the delay change rate is used to indicate a delay change rate corresponding to the third transmission delay, and a delay change value of the first transmission delay and a delay change value of the second transmission delay are obtained based on the proportional value and the delay change rate corresponding to the third transmission delay);

and updating the third transmission delay according to the delay change rate, and updating the first transmission delay and the second transmission delay respectively according to the updated third transmission delay and the ratio value.

Further, updating a third transmission delay according to the delay change rate, and updating the first transmission delay and the second transmission delay according to the updated third transmission delay and the ratio value, respectively, including:

The following describes the processing method of transmission delay according to the present invention with reference to a specific embodiment.

Example 1: the protocol specifies in advance the type of transmission delay (default of the indicator variable) corresponding to the rate of change of delay, drift

In this embodiment, the protocol specifies in advance a transmission delay type corresponding to the drift, for example, the transmission delay type corresponding to the drift is Common delay (second transmission delay), where Common delay _ new = Common delay _ old + drift T2, and FeederLink RTT _ new (third transmission delay) = FeederLink RTT _ old + drift T2. For another example, the type of the transmission delay corresponding to the drift is K _ mac (first transmission delay), where K _ mac _ new = K _ mac _ old + drift T1, and the FeederLink RTT _ new = FeederLink RTT _ old + drift T1, where T1 represents a time interval between two updates of the first transmission delay or a time interval between two updates of the third transmission delay, and T2 represents a time interval between two updates of the second transmission delay or a time interval between two updates of the third transmission delay.

Network side behavior:

the network side configures ephemeris information and a drift update period;

the network side calculates a drift value based on the ephemeris information and the base station position information;

the network side notifies a drift, an initial Common delay (which indicates the value to be 0) and an initial K _ mac (which indicates the value to be 0) of the feeder link in the downlink MIB or SIB, and periodically updates the values;

and the network side dynamically adjusts the updating period of the ephemeris information according to the information such as the CQI of the received information, the time deviation of the reference signal and the like.

Terminal side behavior:

after downlink synchronization is carried out on a terminal, acquiring ephemeris information, an update cycle of a drift of a feeder link, a numerical value of the drift and a transmission delay type corresponding to the drift;

the terminal calculates an initial FeederLink RTT based on the initial Common delay and the initial K _ mac, wherein the initial FeederLink RTT = the initial Common delay + the initial K _ mac;

and the terminal updates Common delay, K _ mac and FeederLink RTT based on the drift and the transmission delay type corresponding to the drift specified in advance by the protocol. When the protocol specifies that the transmission delay type corresponding to the drift is Common delay, common delay _ new = Common delay _ old + drift × T2, and FeederLink RTT _ new = FeederLink RTT _ old + drift × T2; when the transmission delay type corresponding to the drift is specified to be K _ mac by the protocol, K _ mac _ new = K _ mac _ old + drift T1, feederLink RTT _ new = FeederLink RTT _ old + drift T1, T1 represents a time interval between two updates of the first transmission delay or a time interval between two updates of the third transmission delay, and T2 represents a time interval between two updates of the second transmission delay or a time interval between two updates of the third transmission delay;

and the terminal periodically receives the ephemeris information and the drift according to the ephemeris information configured on the network side and the update period of the drift of the feeder link.

Example 2: the protocol does not specify the transmission delay type corresponding to the drift in advance, and the network side indicates the delay change rate drift and indicates initial Common delay =0 (by default, this value is indicated as 0) or initial K _ mac =0 (by default, this value is indicated as 0).

In this embodiment, when the initial Common delay =0, the transmission delay type corresponding to the drift is K _ mac, and when the initial K _ mac =0, the transmission delay type corresponding to the drift is the initial Common delay. When the initial Common delay =0, K _ mac _ new = K _ mac _ old + drift × T1, feederLink RTT _ new = FeederLink RTT _ old + drift × T1, and at this time, drift indicates a delay change of K _ mac and FeederLink RTT.

When the initial K _ mac =0, common delay _ new = Common delay _ old + drift x T2, feederLink RTT _ new = FeederLink RTT _ old + drift x T2, where drift indicates the change in the delay of FeederLink RTT and Common delay.

T1 represents the time interval between two updates of K _ mac or the time interval between two updates of FeederLink RTT, and T2 represents the time interval between two updates of Common delay or the time interval between two updates of FeederLink RTT.

Network side behavior:

the network side configures ephemeris information and an update period of drift;

Terminal side behavior:

when the initial K _ mac is 0 or less, the terminal updates the FeederLink RTT and Common delay based on the drift, where Common delay _ new = Common delay _ old + drift × T2, and FeederLink RTT _ new = FeederLink RTT _ old + drift × T2;

when the initial Common delay is 0 or less, the terminal updates the FeederLink RTT and K _ mac based on the drift, wherein K _ mac _ new = K _ mac _ old + drift × T1, and FeederLink RTT _ new = FeederLink RTT _ old + drift × T1;

Example 3: the protocol does not specify the transmission delay type corresponding to the drift in advance, the network side notifies the drift and the proportion X (the FeederLink RTT is divided into two sections with fixed proportion and corresponding proportion)

In this embodiment, both Common delay and K _ mac are changing, but considering the reference point, the FeederLink RTT is divided into two segments with fixed proportions, assuming that the proportions are Common delay: K _ mac =1: x, common delay = 1/(1 + X) FeederLink RTT. At this time, the network needs to notify a drift indicating a delay change corresponding to the FeederLink RTT and the ratio X. At this time, the terminal updates the FeederLink RTT by using a drift, where FeederLink RTT _ new = FeederLink RTT _ old + drift × T5, and T5 represents a time interval between two updates of the FeederLink RTT. After updating the FeederLink RTT, common delay is updated with Common delay = 1/(1 + X) × FeederLink RTT, and K _ mac is updated with K _ mac = X/(1 + X) × FeederLink RTT.

Network side behavior:

the network side configures ephemeris information, the update cycle of the drift of the feeder link and the like;

the network side calculates the value of the corresponding drift based on the ephemeris information and the base station position information;

the network side notifies a drift of the feeder link, an initial Common delay (indicating that the value is 0 by default), an initial K _ mac (indicating that the value is 0 by default) value and the like in the downlink MIB or SIB, and periodically updates the values;

the network side notifies the ratio X in the downlink MIB or SIB (the FeederLink RTT is divided into two sections of corresponding ratios with fixed ratios);

and the network side dynamically adjusts the update period or ratio X such as ephemeris information and the like according to the CQI of the received signal, the time deviation of the reference signal and the like.

Terminal side behavior:

after downlink synchronization is carried out by the terminal, ephemeris information, a drift updating period, a drift, a proportion X, an initial Common delay, an initial K _ mac value and the like are obtained;

the terminal updates Common delay, K _ mac and FeederLink RTT based on the drift and the ratio X, wherein the FeederLink RTT _ new = FeederLink RTT _ old + drift T5. After updating the FeederLink RTT, updating Common delay by using Common delay = 1/(1 + X) < FeederLink RTT, and updating K _ mac by using K _ mac = X/(1 + X) < FeederLink RTT;

And the terminal updates the numerical value of the ratio X according to the command of the network side.

Example 4: the protocol does not specify the transmission delay type corresponding to the drift in advance, the network side indicates the delay change rate drift and an indication variable (drift indicator), and indicates that the initial Common delay is not 0 and the initial K _ mac is not 0.

In this embodiment, the transmission delay type corresponding to the drift is determined according to a drift indicator. For example, when the drift indicator is 0, the drift indicates a change in latency of Common delay, and at this time, K _ mac is not 0 and is a fixed value, common delay _ new = Common delay _ old + drift T3, and feeder link RTT _ new = Common delay _ new + K _ mac. When the drift indicator is 1, the drift indicates the time delay change of the K _ mac, at this time, common delay is not 0 and is a fixed value, K _ mac _ new = K _ mac _ old + drift T4, feeder link RTT _ new = K _ mac _ new + Common delay, T3 represents the time interval between two updates of Common delay, and T4 represents the time interval between two updates of K _ mac.

Network side behavior:

the network side notifies a drift value, an initial Common delay value, an initial K _ mac value and the like of a feeder link in a downlink MIB or SIB and updates the values periodically;

a network side notifies a drift indicator in a downlink MIB or SIB;

and the network side dynamically adjusts the update period such as ephemeris information and the like according to the CQI of the received signal, the time deviation of the reference signal and the like.

Terminal side behavior:

after downlink synchronization is carried out on a terminal, ephemeris information and a drift updating period of a feeder link, a drift indicator, an initial Common delay, an initial K _ mac value and the like are obtained;

the terminal updates Common delay, K _ mac and FeederLink RTT based on the drift indicator and the drift, for example, when the drift indicator is 0, roughly drift indicates the delay change of the Common delay, at this time, K _ mac is a fixed value, common delay _ new = Common delay _ old + drift T, feederLink RTT _ new = Common delay _ new + K _ mac; when the drift indicator is 1, the drift indicates the time delay change of K _ mac, at this time, common delay is a fixed value, K _ mac _ new = K _ mac _ old + drift T, feederLink RTT _ new = K _ mac _ new + Common delay;

and the terminal periodically receives the ephemeris information, the drift and the drift indicator according to the ephemeris information configured at the network side and the update period of the feeder link time delay change parameter drift.

The transmission delay processing method of the embodiment of the invention receives delay updating indication information; according to the time delay updating indication information, the transmission time delay in the feed link is updated, for example, at least two time delays of the transmission time delay between the satellite and the reference point in the feed link of the satellite communication system, the transmission time delay between the reference point and the base station in the feed link and the transmission time delay between the satellite and the base station are updated, so that the accuracy of uplink data transmission can be effectively ensured.

As shown in fig. 4, an embodiment of the present invention further provides a method for processing a transmission delay, which is applied to a base station, and the method includes:

step 401: and sending time delay updating indication information, wherein the time delay updating indication information is used for updating the transmission time delay in a feed link of the satellite communication system.

In this step, the delay update indication Information may be transmitted through a Master Information Block (MIB) or a System Information Block (SIB).

In the embodiment of the invention, the time delay updating indication information is sent to the terminal, and the terminal updates the transmission time delay in the feed link according to the time delay updating indication information, for example, at least two time delays of the transmission time delay between the satellite and the reference point in the feed link of the satellite communication system, the transmission time delay between the reference point and the base station in the feed link and the transmission time delay between the satellite and the base station are updated, so that the accuracy of uplink data sending can be effectively ensured.

Optionally, the sending of the delay update indication information includes:

It should be noted that the behavior of the base station side is a behavior corresponding to the terminal side method, and the interaction behavior between the base station side and the terminal is described in detail in the terminal side embodiment, and is not described herein again.

As shown in fig. 5, an embodiment of the present invention provides a device for processing propagation delay, which includes a memory 520, a transceiver 500, a processor 510;

a memory 520 for storing a computer program; a transceiver 500 for transceiving data under the control of the processor 510; a processor 510 for reading the computer program in the memory 520 and performing the following operations:

controlling the transceiver 500 to receive the delay updating indication information;

Wherein in fig. 5, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 510, and various circuits, represented by memory 520, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 500 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over transmission media including wireless channels, wired channels, fiber optic cables, and the like. For different user devices, the user interface 530 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 510 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 510 in performing operations.

Alternatively, the processor 510 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a CPLD (Complex Programmable Logic Device), and the processor may also have a multi-core architecture.

The processor is used for executing any method provided by the embodiment of the application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

or, the delay updating indication information includes a delay change rate and an indication variable, where the indication variable is used to indicate a transmission delay type corresponding to the delay change rate, and the transmission delay type includes the first transmission delay or the second transmission delay;

the processor 510 performs the step of updating the transmission delay in the feeder link according to the delay updating indication information, which includes:

Optionally, the step of the processor 510 updating the transmission delay in the feeder link according to the first target transmission delay type and the delay change rate includes:

Optionally, the step of the processor 510 updating the first transmission delay and the third transmission delay according to the delay change rate includes:

Optionally, when the delay updating indication information includes a delay change rate and an indication variable;

Optionally, the step of the processor 510 updating the first transmission delay, and updating the third transmission delay according to the updated first transmission delay includes:

Optionally, the step of the processor 510 updating the third transmission delay according to the delay change rate, and updating the first transmission delay and the second transmission delay according to the updated third transmission delay and the ratio value respectively includes:

Optionally, the controlling, by the processor 510, the transceiver 500 to receive the delay updating indication information includes:

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the embodiment of the processing method for a transmission delay applied to a terminal, and can achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the embodiment of the method are omitted here.

As shown in fig. 6, an embodiment of the present invention further provides a device for processing a transmission delay, which is applied to a base station, and the device includes a memory 620, a transceiver 600, a processor 610;

a memory 620 for storing a computer program; a transceiver 600 for transceiving data under the control of the processor; a processor 610 for reading the computer program in the memory and performing the following operations:

controlling the transceiver 600 to transmit delay update indication information for updating a transmission delay in a feeder link of the satellite communication system;

or the delay updating indication information includes a delay change rate and an indication variable, where the indication variable is used to indicate a transmission delay type corresponding to the delay change rate, and the transmission delay type includes a first transmission delay or a second transmission delay;

Optionally, the processor controls the transceiver 600 to transmit the delay updating indication information, including:

and controlling the transceiver 600 to periodically transmit the delay updating indication information according to the updating period of the delay updating indication information.

Wherein in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 610, and various circuits, represented by memory 620, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 600 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 610 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 610 in performing operations.

The processor 610 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable Logic Device (CPLD), and may also have a multi-core architecture.

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the embodiment of the processing method for a transmission delay applied to a base station, and can achieve the same technical effect, and detailed descriptions of the same parts and beneficial effects as those of the embodiment of the method are omitted here.

As shown in fig. 7, an embodiment of the present invention further provides a processing apparatus for processing a transmission delay, which is applied to a terminal, and includes:

a first receiving unit 701, configured to receive delay updating indication information;

a first processing unit 702, configured to update the transmission delay in the feeder link according to the delay update indication information;

the first processing unit includes:

the first determining subunit is configured to determine, according to a correspondence between a delay variation rate specified by a protocol and a transmission delay type, a first target transmission delay type corresponding to the delay variation rate;

a first updating subunit, configured to update the transmission delay in the feeder link according to the first target transmission delay type and the delay change rate.

Optionally, the first updating subunit is configured to:

or, when the first target transmission delay type is a second transmission delay, updating a second transmission delay and a third transmission delay according to the delay change rate, where a change value of the second transmission delay is the same as a change value of the third transmission delay.

the first processor unit is to:

under the condition that the first transmission delay is 0 or default, updating a second transmission delay and a third transmission delay according to the delay change rate, wherein the change value of the second transmission delay is the same as the change value of the third transmission delay;

or, under the condition that the second transmission delay is 0 or default, updating the first transmission delay and the third transmission delay according to the delay change rate, wherein the change value of the first transmission delay is the same as the change value of the third transmission delay.

Optionally, the first processor unit is configured to:

the first processor unit is to:

or, under the condition that the indication variable indicates that the transmission type corresponding to the delay change rate is the second transmission delay, updating the second transmission delay, and updating the third transmission delay according to the updated second transmission delay.

Optionally, the first processing unit is configured to:

updating the second transmission Delay through a formula of Delay5_ new = Delay5_ old + drift × T4, and through Delay6_ new = Delay5_ new + Common Delay, where Delay5_ new represents the updated second transmission Delay, delay5_ old represents the second transmission Delay before updating, drift represents the Delay change rate, and T4 represents the time interval between two updates of the second transmission Delay; delay6_ new represents the updated third transmission Delay, and Common Delay represents the first transmission Delay.

the first processing unit is to:

Optionally, the first processing unit is configured to:

Optionally, the first receiving unit is configured to periodically receive the delay updating indication information according to an updating period of the delay updating indication information.

It should be noted that, the processing apparatus for transmission delay according to the embodiment of the present invention can implement all the method steps implemented by the embodiment of the method for processing transmission delay at the terminal side, and can achieve the same technical effect, and details of the same parts and beneficial effects as those of the method embodiment in this embodiment are not described herein again.

As shown in fig. 8, an embodiment of the present invention further provides a processing apparatus for processing a transmission delay, which is applied to a terminal, and includes:

a first sending unit 801, configured to send delay update indication information, where the delay update indication information is used to update transmission delay in a feeder link of a satellite communication system;

Optionally, the apparatus in the embodiment of the present invention further includes:

and the determining unit is used for determining the time delay updating indication information.

Optionally, the first sending unit is configured to send the delay updating indication information periodically according to an updating period of the delay updating indication information.

It should be noted that, the apparatus provided in the embodiment of the present invention can implement all the method steps implemented by the foregoing transmission delay processing method embodiment, and can achieve the same technical effect, and details of the same parts and beneficial effects as those of the method embodiment in this embodiment are not described herein again.

It should be noted that, in the embodiment of the present application, the division of the unit is schematic, and is only one logic function division, and when the actual implementation is realized, another division manner may be provided. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a Processor (Processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

In some embodiments of the invention, there is also provided a processor-readable storage medium storing program instructions for causing a processor to perform steps of:

receiving time delay updating indication information;

Alternatively, the program instructions are for causing the processor to perform the steps of:

sending time delay updating indication information, wherein the time delay updating indication information is used for updating transmission time delay in a feed link of a satellite communication system;

When executed by the processor, the program instructions may implement all implementation manners in the foregoing processing method for transmission delay, which are not described herein again to avoid repetition.

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be referred to as a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal device, e.g., a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange language and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, personal Digital Assistants (PDAs), and the like. The wireless Terminal Device 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), an Access Point (Access Point), a Remote Terminal Device (Remote Terminal), an Access Terminal Device (Access Terminal), a User Terminal Device (User Terminal), a User Agent (User Agent), and a User Device (User Device), which are not limited in the embodiment of the present application.

The network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for serving a terminal. A base station may also be referred to as an access point, or a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames with Internet Protocol (IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or Code Division Multiple Access (CDMA), may be a network device (NodeB) in a Wide-band Code Division Multiple Access (WCDMA), may be an evolved Node B (eNB or e-NodeB) in a Long Term Evolution (LTE) System, may be a 5G Base Station (gNB) in a 5G network architecture (Next Generation System), may be a Home evolved Node B (HeNB), a Relay Node (Relay Node), a Home Base Station (Femto), a Pico Base Station (Pico) and the like, and the present application is not limited in this embodiment. In some network architectures, network devices may include Centralized Unit (CU) nodes and Distributed Unit (DU) nodes, which may also be geographically separated.

Multiple Input Multiple Output (MIMO) transmission may be performed between the network device and the terminal device by using one or more antennas, where the MIMO transmission may be Single User MIMO (SU-MIMO) or Multi-User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of root antenna combinations.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A processing method of transmission delay is applied to a terminal, and is characterized by comprising the following steps:

receiving time delay updating indication information;

2. The method of claim 1, wherein the latency update indication information comprises a latency change rate;

3. The method of claim 2, wherein when the latency update indication information comprises a latency change rate;

4. The method of claim 3, wherein updating the propagation delay in the feeder link according to the first target propagation delay type and the delay variation rate comprises:

5. The method of claim 2, wherein when the latency update indication information comprises a latency change rate;

6. The method of claim 4 or 5, wherein updating the first transmission delay and the third transmission delay according to the delay change rate comprises:

7. The method of claim 2, wherein when the delay update indication information includes a delay change rate and an indication variable;

8. The method of claim 7, wherein updating the first transmission delay and updating the third transmission delay based on the updated first transmission delay comprises:

9. The method of claim 2, wherein when the delay update indication information comprises a delay change rate and a scale value;

10. The method of claim 9, wherein updating a third propagation delay according to the delay variation rate, and updating the first propagation delay and the second propagation delay according to the updated third propagation delay and the ratio respectively comprises:

11. The method of claim 1, wherein receiving the latency update indication information comprises:

12. A processing method of transmission delay is applied to a base station, and is characterized by comprising the following steps:

13. The method of claim 12, wherein the latency update indication information comprises a latency change rate;

14. The method of claim 12, wherein sending the latency update indication information comprises:

15. The processing device of transmission delay is characterized by comprising a memory, a transceiver and a processor;

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

16. The apparatus of claim 15, wherein the latency update indication information comprises a latency change rate;

or the delay updating indication information includes a delay change rate and a ratio value, where the ratio value is used to indicate ratio information of the first transmission delay and the second transmission delay in the feeder link.

17. The apparatus of claim 16, wherein when the latency update indication information comprises a latency change rate;

18. The apparatus of claim 17, wherein the processor performs the step of updating the propagation delay in the feeder link according to the first target propagation delay type and the delay change rate comprises:

19. The apparatus of claim 16, wherein when the latency update indication information comprises a latency change rate;

20. The apparatus of claim 18 or 19, wherein the processor performs the step of updating the first transmission delay and the third transmission delay according to the delay change rate comprises:

21. The apparatus of claim 16, wherein when the latency update indication information comprises a latency change rate and an indication variable;

22. The apparatus of claim 21, wherein the processor performs the updating the first transmission delay and the updating the third transmission delay according to the updated first transmission delay comprises:

23. The apparatus of claim 16, wherein when the latency update indication information comprises a latency change rate and a scale value;

24. The apparatus of claim 23, wherein the processor performs the steps of updating a third propagation delay according to the delay variation rate, and updating the first propagation delay and the second propagation delay according to the updated third propagation delay and the ratio value, respectively, comprising:

25. The apparatus of claim 15, wherein the processor controlling the transceiver to receive the latency update indication information comprises:

26. The processing device of transmission delay is characterized by comprising a memory, a transceiver and 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:

controlling a transceiver to transmit delay updating indication information, wherein the delay updating indication information is used for updating transmission delay in a feed link of a satellite communication system;

27. The apparatus of claim 26, wherein the latency update indication information comprises a latency change rate;

28. A processing device of transmission delay is applied to a terminal, and is characterized by comprising:

29. A processing device of transmission delay is applied to a base station, and is characterized by comprising:

30. A processor-readable storage medium, characterized in that it stores program instructions for causing the processor to carry out the steps of the processing method of propagation delay as claimed in any one of claims 1 to 11 or the steps of the processing method of propagation delay as claimed in any one of claims 12 to 14.