CN108601079B

CN108601079B - Timing method, timing device, communication node equipment and computer storage medium

Info

Publication number: CN108601079B
Application number: CN201810297397.3A
Authority: CN
Inventors: 毕峰; 刘星; 张文峰; 张淑娟; 陈琳; 张晨晨; 杨瑾; 陈杰
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2018-04-04
Filing date: 2018-04-04
Publication date: 2021-11-23
Anticipated expiration: 2038-04-04
Also published as: CN108601079A; WO2019192486A1

Abstract

The embodiment of the invention provides a timing method, a timing device, communication node equipment and a computer storage medium, which are suitable for a communication path comprising at least two pieces of communication node equipment, namely links on the communication path introducing at least one piece of relay node equipment.

Description

Timing method, timing device, communication node equipment and computer storage medium

Technical Field

The present invention relates to the field of communications, and in particular, to a timing method, apparatus, communication node device, and computer storage medium.

Background

In a wireless communication system, because the distance between each terminal and a base station is different, it is necessary to ensure that data transmitted by each terminal arrives at the base station side at the same time. To achieve the above object, the current timing mechanism is as follows: the base station informs the terminal of how much time to Advance for transmission through a TAC (Timing Advance Command), and the terminal performs corresponding Timing after receiving the TAC, so that the terminal transmits in Advance at a corresponding time point, but the situation only aims at the situation that the terminal is directly connected with the base station, and at this time, only the base station and the terminal are on a communication path from the terminal to the base station. However, for the communication system after the relay node device is introduced, the terminal may be connected to the base station through the relay node device, that is, at this time, the communication path from the terminal to the base station has at least two communication node devices. For example, when a first relay node device is introduced, the terminal is connected with the base station through the first relay node device, and a communication path from the terminal to the base station is provided with the first relay node device and the base station; for another example, when a first relay node device and a second relay node device are introduced, at least a part of the terminals may be connected to the base station through the first relay node device and the second relay node device, and at this time, three communication node devices, namely the first relay node device, the second relay node device, and the base station, are provided on a communication path from the terminal to the base station, and so on. For a communication system introducing a relay node device, a timing mechanism how to ensure that data transmitted by each terminal simultaneously reaches a base station side is not proposed.

Disclosure of Invention

The embodiment of the invention provides a timing method, a timing device, communication node equipment and a computer storage medium, and mainly solves the technical problems that: for a communication system introducing a relay node device, how to perform timing to ensure that data transmitted by each terminal arrives at a base station side at the same time.

To solve the foregoing technical problem, an embodiment of the present invention provides a timing method, including:

determining the time adjustment quantity of a current link on a communication path based on the signal transmission time PT at the receiving and transmitting ends of the current link and the time adjustment quantity of a previous link of the current link on the communication path;

and setting the signal transmission time of the current link according to the time adjustment quantity of the current link.

In order to solve the above technical problem, an embodiment of the present invention further provides a processing module, configured to determine a time adjustment amount of a current link based on signal transmission times PT at two transceiving ends of the current link on a communication path, where the time adjustment amount of a previous link of the current link on the communication path is a previous hop link;

and the setting module is used for setting the signal transmitting time of the current link according to the time adjustment quantity of the current link.

In order to solve the above technical problem, an embodiment of the present invention further provides a communication node device, including a processor, a memory, and a communication bus;

the communication bus is used for realizing connection communication between the processor and the memory;

the processor is configured to execute one or more programs stored in the memory to implement the steps of the timing method as described above.

To solve the above technical problem, an embodiment of the present invention further provides a computer storage medium for storing one or more programs, which are executed by a processor to implement the steps of the timing method as described above.

The invention has the beneficial effects that:

the timing method, the timing device, the communication node equipment and the computer storage medium provided by the embodiment of the invention can be applied to each link of a communication channel comprising at least two communication node equipment, namely the communication channel introducing at least one relay node equipment, aiming at each link on the communication channel, the inter-adjustment amount of each link is determined based on the signal transmission time PT of the transceiving end of each link and the time adjustment amount of the previous hop link of each link, and further the signal transmission time of each link is set according to the time adjustment amount of each link, so that the data can be ensured to reach an upper layer node at the same time, and finally the data sent by the terminal on each communication channel can reach the base station side at the same time.

Additional features and corresponding advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic diagram of a communication system according to a first embodiment of the present invention;

FIG. 2 is a schematic diagram of a communication path of FIG. 1;

FIG. 3 is a schematic flow chart of a timing method according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a timing device according to a second embodiment of the present invention;

fig. 5 is a schematic structural diagram of a communication node device according to a third embodiment of the present invention;

fig. 6 is a schematic diagram of a link pair adopting a TDM multiplexing mode according to a third embodiment of the present invention;

fig. 7 is a schematic diagram of a link pair adopting an SDM multiplexing mode according to a third embodiment of the present invention;

fig. 8 is a schematic diagram of a link pair adopting an FDM-1 multiplexing mode according to a third embodiment of the present invention;

fig. 9 is a schematic diagram of a link pair adopting an FDM-2 multiplexing mode according to a third embodiment of the present invention;

FIG. 10 is a schematic diagram of a TDM-plus combined SDM multiplexing method according to a fourth embodiment of the present invention;

FIG. 11 is a schematic diagram of a multiplexing mode of TDM-plus combined with FDM-1 according to a fourth embodiment of the present invention;

FIG. 12 is a schematic diagram of a multiplexing mode of TDM-plus combined with FDM-2 according to a fourth embodiment of the present invention;

fig. 13 is a schematic diagram of SDM-plus combined TDM multiplexing in accordance with a fourth embodiment of the present invention;

FIG. 14 is a diagram illustrating a fourth embodiment of multiplexing SDM-plus with FDM-1;

FIG. 15 is a diagram illustrating a SDM-plus and FDM-2 multiplexing scheme according to a fourth embodiment of the present invention;

FIG. 16 is a schematic diagram of a TDM-minus combined SDM multiplexing method according to a fifth embodiment of the present invention;

FIG. 17 is a schematic diagram of a multiplexing mode of TDM-minus with FDM-1 according to a fifth embodiment of the present invention;

FIG. 18 is a schematic diagram of a multiplexing mode of TDM-minus with FDM-2 according to a fifth embodiment of the present invention;

FIG. 19 is a diagram illustrating an SDM-minus combined TDM multiplexing scheme according to a fifth embodiment of the present invention;

FIG. 20 is a diagram illustrating a fifth embodiment of the present invention in which an FDM-1 multiplexing mode is combined with SDM-minus;

fig. 21 is a schematic diagram of an SDM-minus combined with FDM-2 multiplexing mode in the fifth embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The first embodiment is as follows:

the timing method provided in this embodiment is applicable to various Communication systems, including but not limited to the 4th Generation Mobile Communication (abbreviated as 4G) system, the nr (new radio) system (or referred to as 5G system), a new Generation wireless Communication system after the 5G system, and the like.

The 5G system or a new generation wireless communication system after the 5G system will use a carrier frequency higher than that used in the 4G system for communication, for example, 28GHz, 45GHz, 70GHz, etc., but since the carrier frequency corresponding to the high-frequency communication has a shorter wavelength, it can be ensured that more antenna elements can be accommodated in a unit area, and the more antenna elements means that a beamforming method can be used to increase the antenna gain, thereby ensuring the coverage performance of the high-frequency communication. Meanwhile, wireless backhaul transmission can also solve this problem for coverage challenges. However, there is self-interference between BL (Backhaul link) and AL (Access link). For the self-interference problem, the problem can be solved by adopting transmission modes such as time division multiplexing, space division multiplexing, frequency division multiplexing and the like between the BL and the AL.

For the sake of easy understanding, the communication path in the present embodiment will be explained. The communication path in this embodiment includes at least two communication node devices (i.e., at least two hop hops). For example, assume that a communication system includes 4 hops, as shown in fig. 1, the base stations are respectively a base station (the base station may be a gNB of a 5G system, or other base stations), and three NR (relay Node) devices, the three NR devices are respectively NR1, NR2, and NR3, one of the topological connection structures is that the base station, NR1, NR2, and NR3 are sequentially connected (it should be understood that a specific topological connection structure may be determined according to a specific application scenario), and it is assumed that a terminal accessing to the base station is UE0, a terminal accessing to NR1 is UE1, a terminal accessing to NR2 is UE2, and a terminal accessing to NR3 is UE 3. In fig. 1, a communication path including at least two communication node devices includes at least: UE1-RN 1-base station, UE2-RN2-RN 1-base station, UE3-RN3-RN2-RN 1-base station.

For ease of understanding, the communication paths of UE3-RN3-RN2-RN 1-base stations, respectively, are illustrated below.

Referring to fig. 2, in a communication path of UE3-RN3-RN2-RN 1-base station, a link between RN 1-base station is a previous hop link of a link between RN2-RN1, a link between RN2-RN1 is a previous hop link of a link between RN3-RN2, and a link between RN3-RN2 is a previous hop link of a link between UE3-RN 3; for three communication nodes of RN2, RN1 and base station, BL1 represents a backhaul link between the base station and RN1, and AL1 represents an access link between RN1 and RN 2; for three communication nodes of RN3, RN2 and RN1, BL2 represents a backhaul link between RN1 and RN2, and AL2 represents an access link between RN2 and RN 3; for three communication nodes, UE3, RN3, RN2, BL3 represents a backhaul link between RN2 and RN3, and AL3 represents an access link between UE3 and RN 3. As shown in fig. 2, the link pair on the communication path in this embodiment may be composed of BL and AL, or may be composed of BL and BL, or AL and AL. It should be understood that the communication path shown in fig. 2 is merely an example, and that hops on the communication path are less than those shown in fig. 2, or greater than those shown in fig. 2, and so on, and will not be described herein.

Based on the above example description, the timing method provided by the present embodiment is shown in fig. 3, and includes:

s301: an amount of time adjustment for a current link on a communication path is determined.

In this embodiment, the time adjustment amount of the current link on the communication path is determined based on the signal transmission time pt (propagation time) at the transmitting end and the receiving end of the current link, and the time adjustment amount of the previous link on the communication path of the current link is determined. Therefore, the time adjustment amount of the current link on the communication path is determined by acquiring the signal transmission time PT at the transmitting end and the receiving end of the current link and the time adjustment amount of the previous link of the current link on the communication path, and determining the time adjustment amount of the previous link according to the acquired time adjustment amount of the previous link and the PT.

And the specific acquisition manner is not limited in this embodiment.

S302: and setting the signal transmission time of the current link according to the time adjustment amount of the current link.

In this embodiment, the setting of the signal transmission time can be completed by the method shown in fig. 3 for each link on the communication path, so as to ensure that the data transmitted by the terminals on each communication path arrive at the base station side at the same time.

In this embodiment, the signal transmission time at the two ends of the link refers to the transmission time of the signals transmitted and received between the nodes at the two ends of the link, for example, the link between the base station and the RN1 in fig. 2, and the signal transmission time at the two ends refers to the signals PT at the two ends of the base station and the RN 1. Optionally, the PT may be acquired by the base station, and the base station may further issue the acquired PT to the RN 1.

In this embodiment, the time adjustment amount of the link is: the communication node device on the link begins transmitting a signal at a boundary of times that is offset in time relative to the boundary of times that signal reception begins. For example, for the link between the base station and RN1, the time adjustment is the time offset of the boundary of the time when the communication node RN1 starts transmitting signal, relative to the boundary of the time when the signal starts receiving signal.

The timing method provided by the embodiment is suitable for a communication path including at least two communication node devices.

In this embodiment, when the time adjustment amount of the previous link is equal to 0, it indicates that the boundary of the time when the communication node apparatus on the previous link starts to transmit a signal is aligned with the boundary of the time when the communication node apparatus starts to receive a signal, and the time adjustment amount of the current link is determined by the PT of the current link. For example, in fig. 2, the link between the base station and RN1 has no previous-hop link, and the time adjustment of the previous-hop link can be considered to be equal to 0, and the time adjustment of the link between the base station and RN1 is equal to 2 times PT of the link.

It should be understood that, in this embodiment, determining the time adjustment amount of the current link according to the signal transmission time PT at the transceiving end of the current link on the communication path, the time adjustment amount of the previous-hop link of the current link on the communication path may include determining the time adjustment amount of the previous-hop link of the current link on the communication path directly according to only the signal transmission time PT at the transceiving end of the current link on the communication path, and the time adjustment amount of the previous-hop link of the current link on the communication path; in order to improve the accuracy, reliability and other requirements of the timing, the determination of the time adjustment amount of the current link can be flexibly combined with other factors. For convenience of understanding, the present embodiment is exemplified by taking a multiplexing manner of each link pair on a communication path as an example.

For example, in this embodiment, when each link pair on the communication channel adopts a same-direction communication Frequency Division Multiplexing FDM-1 (i.e., a same-direction communication in an FDM manner) in TDM (Time Division Multiplexing) or FDM (Frequency Division Multiplexing), that is, a communication node device (e.g., RN) performs reception and transmission simultaneously with different Frequency resources for different links, determining a Time adjustment amount of a current link according to an acquired PT and a Time adjustment amount of a previous-hop link includes:

determining a time adjustment amount TimeAdustment _ hop (n +1) ═ TimeAdustment _ hop (n) +2 × PT of the current link, wherein n is an integer greater than or equal to 0, and TimeAdustment _ hop (n) is the time adjustment amount of the previous link; i.e., the time adjustment for the previous link plus 2 times PT for the current link.

In this embodiment, when each link pair on the communication channel adopts SDM (Spatial Division Multiplexing) or FDM-2 (i.e. in FDM manner, the different links of the RN simultaneously perform receiving or transmitting by using different frequency resources, and determining the time adjustment amount of the current link according to the obtained PT and the time adjustment amount of the previous-hop link includes:

when the current link is an odd-numbered link, determining a time adjustment amount TimeAdustment _ hop (2n +1) ═ TimeAdustment _ hop (2n) +2 PT of the current link, wherein n is an integer greater than or equal to 0, and TimeAdustment _ hop (2n) is the time adjustment amount of the previous link, namely the time adjustment amount of the previous link plus 2 times PT of the current link;

when the current link is an even-numbered hop link, determining a time adjustment quantity TimeAdustment _ hop (2n +2) ═ TimeAdustment _ hop (2n +1) -2 PT of the current link, wherein n is an integer greater than or equal to 0, and TimeAdustment _ hop (2n +1) is the time adjustment quantity of the previous-hop link, namely the time adjustment quantity of the previous-hop link minus 2 times PT of the current link; in this embodiment, the time adjustment quantity with a positive value is represented as a time lag quantity, and the time adjustment quantity with a negative value is represented as a time advance quantity.

In this embodiment, when the first link pair in the communication path adopts TDM or FDM-1, and each subsequent link pair adopts TDM, SDM, FDM-1, or FDM-2, determining the time adjustment amount of the current link according to the obtained PT and the time adjustment amount of the previous link includes:

determining a time adjustment amount TimeAdustment _ hop (n +1) ═ TimeAdustment _ hop (n) +2 × PT of the current link, wherein n is an integer greater than or equal to 0, and TimeAdustment _ hop (n) is the time adjustment amount of the previous-hop link, namely the time adjustment amount of the previous-hop link plus 2 times PT of the current link.

In this embodiment, when the first link pair in the communication path adopts SDM and each subsequent link pair adopts TDM, FDM-1, or FDM-2, or when the first link pair in the communication path adopts FDM-2 and each subsequent link pair adopts TDM, SDM, or FDM-1, determining the time adjustment amount of the current link according to the obtained time adjustment amount of the PT and the previous hop link includes:

determining the time adjustment amount of the current link, namely TimeAdustment _ hop (n +1) ═ TimeAdustment _ hop (n) -2 × PT, wherein n is an integer greater than or equal to 0, and TimeAdustment _ hop (n) is the time adjustment amount of the previous link.

In this embodiment, when the first link pair in the communication path adopts SDM, the second link pair adopts TDM or FDM-1, and each subsequent link pair adopts TDM, SDM, FDM-1 or FDM-2, determining the time adjustment amount of the current link according to the obtained PT and the time adjustment amount of the previous link includes:

In this embodiment, when the first link pair in the communication path employs SDM, the second link pair employs SDM or FDM-2, and each subsequent link pair employs TDM, SDM, FDM-1 or FDM-2, determining the time adjustment amount of the current link according to the obtained PT and the time adjustment amount of the previous link includes:

when the current link is the third hop and the links after the third hop on the communication path, the time adjustment amount of the current link, namely time adjustment _ hop (n +1) ═ time adjustment _ hop (n) +2 × PT, is determined, n is an integer greater than or equal to 0, and time adjustment _ hop (n) is the time adjustment amount of the link of the previous hop.

In this embodiment, the timing method shown in fig. 3 may be applied to the initial access phase, where the currently transmitted information of the current link is the random access response information. Of course, other phases are also applicable.

In this embodiment, when the information currently transmitted by the current link is the non-random access response information, that is, the stage after the access, at this time, it is determined that the time adjustment amount of the current link is selectable by adopting the following method:

and determining the time adjustment amount of the current link as the sum of the time adjustment amount adopted by the current link at the previous moment and the correction time adjustment amount.

In this embodiment, the obtaining manner of the correction time adjustment amount may adopt various manners, for example, the receiving time of the signal sent according to the time adjustment amount adopted at the previous time may be monitored, and the receiving time may be compared with a preset standard time range to obtain the correction time adjustment amount. In this embodiment, when the corrected time adjustment amount is equal to 0, it can be known from the above formula that the time adjustment amount of the current link at this time is the same as the time adjustment amount used at the previous time, and when the corrected time adjustment amount is greater than 0, the obtained time adjustment amount of the current link is earlier than the time adjustment amount at the previous time, and when the corrected time adjustment amount is less than 0, the obtained time adjustment amount of the current link is later than the time adjustment amount at the previous time.

It can be seen that, in this embodiment, first, for each link on a communication path into which at least one relay node device is introduced, a time adjustment amount of each link can be determined according to signal transmission time PT at the transmitting and receiving ends of each link and a time adjustment amount of a one-hop link before each link, and then, a signal transmission time of each link is set according to the time adjustment amount of each link, so that it is ensured that data simultaneously reaches an upper node without interference, and the same or different multiplexing modes can be flexibly adopted between each link pair.

Example two:

this embodiment also provides a timing device, which can be disposed on a device dedicated to timing setting in a communication system, and also can be disposed on a communication node device on a communication path, as shown in fig. 4, and the timing device includes:

the processing module 42 is configured to determine a time adjustment amount of the current link according to the time PT of signal transmission at the transceiving end of the current link and the time adjustment amount of the previous link of the current link on the communication path.

And a setting module 43, configured to set the signal transmission time of the current link according to the time adjustment amount of the current link.

In this embodiment, the setting of the signal transmission time can be completed by the timing device shown in fig. 4 for each link on the communication path, so as to ensure that the data transmitted by the terminals on each communication path arrive at the base station side at the same time.

In this embodiment, the signal transmission time at the two ends of the link refers to the transmission time of the signals transmitted and received between the nodes at the two ends of the link. The time adjustment amount of the link is as follows: the communication node device on the link begins transmitting a signal at a boundary of times that is offset in time relative to the boundary of times that signal reception begins.

In this embodiment, when the time adjustment amount of the previous link is equal to 0, which indicates that the boundary of the time when the communication node device on the previous link starts to transmit a signal is aligned with the boundary of the time when the communication node device starts to receive a signal, the processing module 42 determines that the time adjustment amount of the current link is determined by the PT of the current link.

It should be understood that, in this embodiment, the processing module 42 determines the time adjustment amount of the current link according to the signal transmission time PT at the transceiving end of the current link on the communication path, the time adjustment amount of the previous-hop link on the communication path of the current link, and may include determining the time adjustment amount of the previous-hop link on the communication path of the current link directly according to only the signal transmission time PT at the transceiving end of the current link on the communication path, and the time adjustment amount of the previous-hop link on the communication path of the current link; in order to improve the accuracy, reliability and other requirements of the providing, the processing module 42 may also flexibly combine other factors to determine the time adjustment amount of the current link. For convenience of understanding, the present embodiment is exemplified by taking a multiplexing manner of each link pair on a communication path as an example.

At this time, in this embodiment, referring to fig. 4, the timing apparatus may further include an obtaining module 41, configured to obtain, by the processing module 42, a multiplexing manner of each link pair on the communication path before a time adjustment amount of a previous link of the current link on the communication path according to signal transmission times PT at the transceiving both ends of the current link; of course, the signal transmission time PT at the transceiving end of the current link, and the time adjustment amount of the previous link on the communication path of the current link can also be obtained by the processing module 42.

At this time, the processing module 42 may determine the time adjustment amount of the current link according to the multiplexing mode of each link pair.

It should be understood that the functions of the acquiring module 41, the processing module 42 and the setting module 43 in the present embodiment can be realized by a processor or a controller of a device in which the acquiring module, the processing module 42 and the setting module 43 are located.

In this embodiment, the processing module 42 is configured to determine a time adjustment amount of a current link, namely, time adjustment _ hop (n +1) ═ time adjustment _ hop (n) +2 × PT, where n is an integer greater than or equal to 0, and time adjustment _ hop (n) is a time adjustment amount of a previous-hop link, when each link pair of the communication path adopts TDM or FDM-1, or when a multiplexing manner is that the first link pair on the communication path adopts TDM or FDM-1, and each subsequent link pair adopts TDM, SDM, FDM-1, or FDM-2.

In this embodiment, the processing module 42 is configured to determine, when each link pair of the communication path adopts SDM or FDM-2, and when the current link is an odd-hop link, that a time adjustment amount of the current link is time adjustment _ hop (2n +1) ═ time adjustment _ hop (2n) +2 PT, n is an integer greater than or equal to 0, and time adjustment _ hop (2n) is a time adjustment amount of the previous-hop link;

and when the current link is an even-numbered hop link, determining a time adjustment quantity TimeAdustment _ hop (2n +2) -TimeAdustment _ hop (2n +1) -2 PT of the current link, wherein n is an integer greater than or equal to 0, TimeAdustment _ hop (2n +1) is the time adjustment quantity of the previous-hop link, the time adjustment quantity takes the positive value to represent the time lag, and the negative value to represent the time lead.

In this embodiment, the processing module 42 is configured to determine the time adjustment amount of the current link, namely, time adjustment _ hop (n +1) ═ time adjustment _ hop, (n) -2 × PT, where n is an integer greater than or equal to 0, and adjustment _ hop (n) is the time adjustment amount of the previous hop link, when the first link pair on the communication path adopts SDM, FDM-1, or the multiplexing mode is TDM, FDM-2, or the subsequent link pair adopts FDM-1, TDM, SDM, FDM-1, or FDM-2.

In this embodiment, the processing module 42 is configured to determine, when the first link pair adopts SDM, the second link pair adopts SDM or FDM-2, and each subsequent link pair adopts TDM, SDM, FDM-1 or FDM-2, and when the current link is the third hop and the subsequent link on the communication path, a time adjustment amount of the current link, namely, time adjustment _ hop (n +1) ═ time adjustment _ hop (n) +2 × PT, n is an integer greater than or equal to 0, and time adjustment _ hop (n) is the time adjustment amount of the previous-hop link.

In this embodiment, the above timing scheme shown in fig. 4 may be applied to the initial access phase, where the information currently transmitted by the current link is random access response information. Of course, other phases are also applicable.

In this embodiment, when the information currently transmitted by the current link is the non-random access response information, that is, the information at the stage after the access, at this time, the processing module 42 of the timing apparatus may determine the time adjustment amount of the current link by using the following method:

the processing module 42 determines the time adjustment amount of the current link as the time adjustment amount adopted at the previous moment of the current link plus the correction time adjustment amount.

The timing device provided in this embodiment can determine the time adjustment amount of each link for each link on the communication path into which at least one relay node device is introduced, and then set the signal transmission time of each link according to the time adjustment amount of each link, thereby ensuring that data simultaneously reaches an upper node without interference, and flexibly adopting the same or different multiplexing modes between each link pair.

Example three:

the present embodiment also provides a communication node device, which may be a base station or various relay node devices, and the like, as shown in fig. 5, the communication node device includes a processor 51, a memory 52, and a communication bus 53;

the communication bus 53 is used for realizing connection communication between the processor 51 and the memory 52;

the processor 51 is configured to execute one or more programs stored in the memory to implement the steps of the timing method as shown in the above embodiments.

The present embodiment also provides a computer-readable storage medium, which can be applied to various communication devices, and stores one or more programs, which are executed by one or more processors to implement the steps of the timing method as shown in the above embodiments.

For the convenience of understanding of the present invention, the present embodiment will be described by taking a new generation wireless communication system applied to a 5G communication system or a 5G communication system, and taking a link pair composed of BL and AL as an example in conjunction with the communication path shown in fig. 2, and several specific application scenarios are illustrated.

Scene one: each link pair on the communication path adopts the same BL and AL multiplexing mode

Scenario one, subroutine one: TDM multiplexing mode is adopted for each link pair

As shown in fig. 6, when each link pair employs the TDM multiplexing scheme, in fig. 6, the PT (Propagation Time) of signals at both ends of link transmission and reception between gNB and RN1 is t1, the PT of signals at both ends of link transmission and reception between RN1 and RN2 is t2, the PT of signals at both ends of link transmission and reception between RN2 and RN3 is t3, and the PT of signals at both ends of link transmission and reception between UE3 and RN3 is t 4. As introduced above in fig. 1 and 2, the terminal accessing to the base station gNB is referred to as UE0, the terminal accessing to RN1 is referred to as UE1, the terminal accessing to RN2 is referred to as UE2, and the terminal accessing to RN3 is referred to as UE 3.

PT of the signal between gNB Tx to RN1 and RN1Rx from gNB is t1, and the time adjustment amount of RN1Tx to gNB relative to RN1Rx from gNB is equal to 2 × t1, which is the time advance in this example;

the PT of the signal between RN1Tx to RN2 and RN2Rx from RN1 is t2, and the time adjustment amount of RN2Tx to RN1 relative to RN2Rx from RN1 is equal to 2 × t1+2 × t2 ═ 2 (t1+ t2), and is the time advance;

when PT of a signal between RN2Tx to RN3 and RN3Rx from RN2 is t3, RN3Tx to RN2 is time-adjusted by 2 (t1+ t2) + 2t 3 ═ 2 (t1+ t2+ t3) relative to RN3Rx from RN2, and the time-adjusted amount is time advance;

the PT of the signal between RN3Tx to UE3 and UE3Rx from RN3 is t4, then the time adjustment amount of UE3Tx to RN3 relative to UE3Rx from RN3 is equal to 2 (t1+ t2+ t3) +2 × t4 ═ 2 (t1+ t2+ t3+ t4), and the time adjustment amount is the time advance;

according to the present sub-example, the time adjustment amount of the current link at this time is equal to the time adjustment amount of the previous link plus 2 times PT of the current link, that is, time adjustment _ hop (n +1) ═ time adjustment _ hop (n) +2 × PT, where n is an integer greater than or equal to 0.

Scenario one, sub-case two: each link pair adopts SDM multiplexing mode

As shown in fig. 7, each link pair adopts SDM multiplexing, and PT labels for transmitting and receiving signals at both ends between each hop are omitted in the figure for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

PT of the signal between gNB Tx to RN1 and RN1Rx from gNB is t1, and the time adjustment amount of RN1Tx to gNB relative to RN1Rx from gNB is equal to 2 × t1, which is the time advance;

the PT of the signal between RN1Tx to RN2 and RN2Rx from RN1 is t2, then RN2Tx to RN1 is time adjusted by 2 × t1-2 × t2 ═ 2 (t1-t2) relative to RN2Rx from RN1, the time adjusted value is positive and is represented as time lag, and the time adjusted value is negative and is represented as time lead;

when PT of a signal between RN2Tx to RN3 and RN3Rx from RN2 is t3, RN3Tx to RN2 is time-adjusted by 2 (t1-t2) + 2t 3 (t1-t2+ t3) relative to RN3Rx from RN2, and the time-adjusted amount is time advance;

the PT of the signal between RN3Tx to UE3 and UE3Rx from RN3 is t4, then the UE Tx to RN3 time adjustment amount relative to UE Rx from RN3 is equal to 2 (t1-t2+ t3) -2 t 4-2 (t1-t2+ t3-t4), the time adjustment amount is positive and indicated as the time lag, and the time adjustment amount is negative and indicated as the time advance;

according to the sub-example, the time adjustment amount of the current odd-hop link is equal to the time adjustment amount of the previous-hop link plus 2 times PT of the current link, that is, time adjustment _ hop (2n +1) is time adjustment _ hop (2n) +2 PT;

the time adjustment amount of the current even-numbered hop link is equal to the time adjustment amount of the previous hop link minus 2 times of PT of the current link, namely, the time adjustment _ hop (2n +2) is time adjustment _ hop (2n +1) -2 PT, wherein n is an integer greater than or equal to 0.

Scene one, sub-example three: each link pair adopts FDM-1 multiplexing mode

As shown in fig. 8, each link pair adopts FDM-1 multiplexing, and PT labels for transmitting and receiving signals at both ends between each hop are omitted in the figure for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

when PT of a signal between RN3Tx to UE3 and UE3Rx from RN3 is t4, the time adjustment amount of UE Tx to RN3 relative to UE Rx from RN3 is equal to 2 (t1+ t2+ t3) + 2t 4-2 (t1+ t2+ t3+ t4), and the time adjustment amount is a time advance;

The timing relationship of FDM-1 is the same as that of TDM.

Scene one, example four: each link pair adopts FDM-2 multiplexing mode

As shown in fig. 9, each link pair adopts FDM-2 multiplexing, and PT labels for transmitting and receiving signals at both ends between each hop are omitted in the figure for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as in the first sub-example of the first embodiment.

that is, the time adjustment amount of the current even-numbered hop link is equal to the time adjustment amount of the previous hop link minus 2 times PT of the current link, that is, time adjustment _ hop (2n +2) ═ time adjustment _ hop (2n +1) -2 × PT, where n is an integer greater than or equal to 0.

The timing relationship for FDM-2 is the same as the timing relationship for SDM.

Example four:

scene two: first case (plus) of link pair using different BL and AL multiplexing

Scenario two, sub-instance one: the first link pair adopts a TDM multiplexing mode, each subsequent link pair adopts an SDM or FDM-1 or FDM-2 multiplexing mode, and TDM adopted by the first link pair in this sub-example adopts TDM-plus representation.

As shown in fig. 10, the TDM-plus scheme is combined with the SDM scheme, and PT labels for transmitting and receiving signals at both ends between each hop are omitted in the figure for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

The 1 st link pair adopts TDM-plus, PT of a signal between gNB Tx to RN1 and RN1Rx from gNB is t1, and the time adjustment amount of RN1Tx to gNB relative to RN1Rx from gNB is equal to 2 x t1, and is time advance;

the 2 nd link pair adopts SDM, and PT of a signal between RN1Tx to RN2 and RN2Rx from RN1 is t2, so that the time adjustment amount of RN2Tx to RN1 relative to RN2Rx from RN1 is equal to 2 × t1+2 × t 2-2 × (t1+ t2), and the time adjustment amount is a time advance amount;

the 3 rd link pair and the following link pairs execute an SDM multiplexing mode, which is not described in detail herein;

at this time, the time adjustment amount of the current link is equal to the time adjustment amount of the previous link plus 2 times PT of the current link, that is, time adjustment _ hop (n +1) ═ time adjustment _ hop (n) +2 × PT, where n is an integer greater than or equal to 0.

As shown in fig. 11, the TDM-plus is combined with the FDM-1, and PT labels for transmitting and receiving end signals between each hop are omitted for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

when the 2 nd link pair adopts FDM-1, the PT of a signal between RN1Tx to RN2 and RN2Rx from RN1 is t2, the time adjustment amount of RN2Tx to RN1 relative to RN2Rx from RN1 is equal to 2 x t1+2 x t 2-2 x (t1+ t2), and the time adjustment amount is the time advance amount;

the 3 rd link pair and the following link pairs all execute FDM-1 multiplexing mode, which is not described again;

As shown in fig. 12, the TDM-plus scheme is combined with the FDM-2 scheme, and PT labels for transmitting and receiving end signals between each hop are omitted for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

when the 2 nd link pair adopts FDM-2, the PT of a signal between RN1Tx to RN2 and RN2Rx from RN1 is t2, and the time adjustment amount of RN2Tx to RN1 relative to RN2Rx from RN1 is equal to 2 x t1+2 x t 2-2 x (t1+ t2), and is the time advance;

the 3 rd link pair and the subsequent link pairs adopt an FDM-2 multiplexing mode, which is not described again;

It can be seen that, in this sub-example, with reference to fig. 10, 11, and 12, the TDM-plus is followed by TDM or SDM or FDM-1 or FDM-2, and the time adjustment amount of the current link is equal to the time adjustment amount of the previous link plus 2 times PT of the current link, that is, time adjustment _ hop (n +1) ═ time adjustment _ hop (n) +2 PT, where n is an integer greater than or equal to 0.

Scenario two, sub-example two: the first link pair adopts an SDM multiplexing mode, each subsequent link pair adopts a TDM or FDM-1 or FDM-2 multiplexing mode, and SDM adopted by the first link pair in the present sub-example is expressed by SDM-plus.

As shown in fig. 13, the SDM-plus is combined with the TDM system, and PT labels for transmitting and receiving signals at both ends between each hop are omitted in the figure for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

The 1 st link pair adopts SDM-plus, and PT of a signal between gNB Tx to RN1 and RN1Rx from gNB is t1, so that the time adjustment amount of RN1Tx to gNB relative to RN1Rx from gNB is equal to 2 x t1, and the time adjustment amount is the time advance amount;

the 2 nd link pair adopts TDM, PT of a signal between RN1Tx to RN2 and RN2Rx from RN1 is t2, RN2Tx to RN1 is equal to 2t 1-2 t2 to 2 (t1-t2) relative to RN2Rx from RN1, time adjustment value is positive and is represented as time lag, and time adjustment value is negative and is represented as time lead;

the 3 rd link pair and each subsequent link pair adopt TDM multiplexing mode, which is not described again here;

at this time, the time adjustment amount of the current link is equal to the time adjustment amount of the previous link minus 2 times PT of the current link, i.e. time adjustment _ hop (n +1) ═ time adjustment _ hop (n) -2 × PT, where n is an integer greater than or equal to 0.

As shown in fig. 14, SDM-plus is combined with FDM-1, and PT labels for transmitting and receiving end signals between each hop are omitted for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

when the 2 nd link pair adopts FDM-1, the PT of a signal between RN1Tx to RN2 and RN2Rx from RN1 is t2, the time adjustment amount of RN2Tx to RN1 relative to RN2Rx from RN1 is equal to 2t 1-2 t 2-2 t (t1-t2), the time adjustment amount is positive and is represented as time lag, and the time adjustment amount is negative and is represented as time advance;

the 3 rd link pair and other link pairs adopt FDM-1 multiplexing mode, which is not described in detail here;

As shown in fig. 15, SDM-plus is combined with FDM-2, and PT labels for transmitting and receiving end signals between each hop are omitted for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

the 2 nd link pair adopts FDM-2, and the PT of a signal between RN1Tx to RN2 and RN2Rx from RN1 is t2, so that the time adjustment amount of RN2Tx to RN1 relative to RN2Rx from RN1 is equal to 2t 1-2 t 2-2 t (t1-t2), the time adjustment amount is positive and is represented as time lag, and the time adjustment amount is negative and is represented as time advance;

the 3 rd link pair and other link pairs adopt FDM-2 multiplexing mode, which is not described in detail here;

In this sub-example, as can be seen from fig. 13, 14 and 15, the SDM-plus is followed by TDM or SDM or FDM-1 or FDM-2, and the time adjustment amount of the current link is equal to the time adjustment amount of the previous link minus 2 times PT of the current link, that is, time adjustment _ hop (n +1) ═ time adjustment _ hop (n) -2 PT, where n is an integer greater than or equal to 0.

Scenario two, sub-case three: the first link pair adopts an FDM-1 multiplexing mode, each subsequent link pair adopts an SDM or TDM or FDM-2 multiplexing mode, and FDM-1 adopted by the first link pair in the present sub-example is expressed by FDM-1-plus.

In this sub-example, combining that the timing relationship of FDM-1 is the same as the timing relationship of TDM-plus in the first sub-example of the second scenario, the FDM-1-plus is followed by TDM or SDM or FDM-1 or FDM-2, and the time adjustment amount of the current link is equal to the time adjustment amount of the previous link plus 2 times PT of the current link, that is, time adjustment _ hop (n +1) ═ time adjustment _ hop (n) +2 × PT, where n is an integer greater than or equal to 0.

Scenario two, sub-case four: the first link pair adopts an FDM-2 multiplexing mode, each subsequent link pair adopts an SDM or FDM-1 or TDM multiplexing mode, and FDM-2 adopted by the first link pair in the present sub-example is expressed by FDM-2-plus.

In this sub-example, the timing relationship of FDM-2 is the same as the timing relationship of SDM-plus in the third sub-example of the scenario, that is, FDM-2-plus is followed by TDM, SDM, or FDM-1, and the time adjustment amount of the current link is equal to the time adjustment amount of the previous link minus 2 times PT of the current link, that is, time adjustment _ hop (n +1) ═ time adjustment _ hop (n) -2 PT, where n is an integer greater than or equal to 0.

Example five:

scene three: second case (minus) where link pairs use different BL and AL multiplexing modes

Scene three, sub-instance one: the multiplexing mode is that the first link pair on the communication path adopts SDM, the second link pair adopts TDM, each subsequent link pair adopts TDM, SDM, FDM-1 or FDM-2, and the TDM adopted by the second link pair in this sub-example is characterized by TDM-minus.

As shown in fig. 16, the TDM-minus scheme is combined with the SDM scheme, and PT labels for transmitting and receiving end signals between each hop are omitted in the figure for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

the 2 nd link pair adopts TDM-minus, the PT of the signal between RN1Tx to RN2 and RN2Rx from RN1 is t2, then RN2Tx to RN1 is equal to 2t 1-2 t 2-2 t (t1-t2) relative to RN2Rx from RN1, the time adjustment value is positive and is represented as time lag, and the time adjustment value is negative and is represented as time advance;

the 3 rd link pair adopts SDM, PT of a signal between RN2Tx to RN3 and RN3Rx from RN2 is t3, then RN3Tx to RN2 is equal to 2 (t1-t2) -2 t 3-2 (t1-t2-t3) relative to RN3Rx from RN2, the time adjustment value is positive and is represented as time lag, and the time adjustment value is negative and is represented as time advance;

the 4th link pair and the following link pairs adopt an SDM multiplexing mode, which is not described again here;

As shown in fig. 17, the TDM-minus is combined with the FDM-1, and PT labels for transmitting and receiving end signals between each hop are omitted for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

The 1 st link pair adopts SDM, PT of a signal between gNB Tx to RN1 and RN1Rx from gNB is t1, then RN1Tx to gNB is time adjusted by 2 x t1 relative to RN1Rx from gNB, and the time adjusted by time is time advance;

when the 3 rd link pair adopts FDM-1, the PT of a signal between RN2Tx to RN3 and RN3Rx from RN2 is t3, the time adjustment amount of RN3Tx to RN2 relative to RN3Rx from RN2 is equal to 2 (t1-t2) -2 t 3-2 (t1-t2-t3), the time adjustment amount is positive and is expressed as time lag, and the time adjustment amount is negative and is expressed as time advance;

the 4th link pair and other subsequent link pairs adopt an FDM-1 multiplexing mode, which is not described again;

As shown in fig. 18, the TDM-minus is combined with the FDM-2, and PT labels for transmitting and receiving end signals between each hop are omitted for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

when the 3 rd link pair adopts FDM-2, the PT of a signal between RN2Tx to RN3 and RN3Rx from RN2 is t3, the time adjustment amount of RN3Tx to RN2 relative to RN3Rx from RN2 is equal to 2 (t1-t2) -2 t 3-2 (t1-t2-t3), the time adjustment amount is positive and is expressed as time lag, and the time adjustment amount is negative and is expressed as time advance;

the 4th link pair and the subsequent link pairs adopt an FDM-2 multiplexing mode, which is not described again;

It can be seen that, in this sub-example, with reference to fig. 16, 17, and 18, the TDM-minus is followed by the TDM or SDM, or FDM-1 or FDM-2, and the time adjustment amount of the current link is equal to the time adjustment amount of the previous link minus 2 times PT of the current link, that is, time adjustment _ hop (n +1) ═ time adjustment _ hop (n) -2 PT, where n is an integer greater than or equal to 0.

Scenario three, sub-case two: the multiplexing mode is that the first link pair on the communication path adopts SDM, the second link pair adopts SDM, each subsequent link pair adopts TDM, SDM, FDM-1 or FDM-2, and the SDM adopted by the second link pair in this sub-example is characterized by SDM-minus.

As shown in fig. 19, in the SDM-minus system, PT labels for transmitting and receiving end signals between hops are omitted for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

the 2 nd link pair adopts SDM-minus, and the PT of a signal between RN1Tx to RN2 and RN2Rx from RN1 is t2, then RN2Tx to RN1 is time adjustment quantity relative to RN2Rx from RN1 equal to 2t 1-2 t 2-2 (t1-t2), the time adjustment quantity value is positive and is represented as time lag, and the time adjustment quantity value is negative and is represented as time advance;

the 3 rd link pair adopts TDM, the PT of a signal between RN2Tx to RN3 and RN3Rx from RN2 is t3, the time adjustment amount of RN3Tx to RN2 relative to RN3Rx from RN2 is equal to 2 (t1-t2) + 2t 3-2 (t1-t2+ t3), the time adjustment amount is positive and is represented as time lag, and the time adjustment amount is negative and is represented as time advance;

the 4th link pair and the subsequent link pairs adopt a TDM multiplexing mode, which is not described again;

As shown in fig. 20, the SDM-minus is combined with the FDM-1, and PT labels for transmitting and receiving end signals between each hop are omitted for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

when the 3 rd link pair adopts FDM-1, the PT of a signal between RN2Tx to RN3 and RN3Rx from RN2 is t3, the time adjustment amount of RN3Tx to RN2 relative to RN3Rx from RN2 is equal to 2 (t1-t2) + 2t 3-2 (t1-t2+ t3), the time adjustment amount is positive and is represented as time lag, and the time adjustment amount is negative and is represented as time advance;

the 4th link pair and the subsequent link pairs adopt an FDM-1 multiplexing mode, which is not described again;

As shown in fig. 21, the SDM-minus is combined with the FDM-2 system, and PT labels for transmitting and receiving end signals between each hop are omitted for simplicity of illustration, but the labeling principle is the same as that of fig. 6. Assume the same as scenario one, sub-case one.

when the 3 rd link pair adopts FDM-2, the PT of a signal between RN2Tx to RN3 and RN3Rx from RN2 is t3, the time adjustment amount of RN3Tx to RN2 relative to RN3Rx from RN2 is equal to 2 (t1-t2) + 2t 3-2 (t1-t2+ t3), the time adjustment amount is positive and is represented as time lag, and the time adjustment amount is negative and is represented as time advance;

In this sub-example, as can be seen from fig. 19, 20 and 21, the SDM-minus is followed by TDM or SDM or FDM-1 or FDM-2, and the time adjustment amount of the current link is equal to the time adjustment amount of the previous link plus 2 times PT of the current link, that is, time adjustment _ hop (n +1) ═ time adjustment _ hop (n) +2 PT, where n is an integer greater than or equal to 0.

Scene three, sub-example three: the multiplexing mode is that the first link pair on the communication channel adopts SDM, the second link pair adopts FDM-1, each subsequent link pair adopts TDM, SDM, FDM-1 or FDM-2, and the FDM-1 adopted by the second link pair in this sub-example is characterized by FDM-1-minus.

In this sub-example, when the timing relationship of the FDM-1 is the same as the timing relationship of the TDM in the first sub-example of the third scenario, the FDM-1-minus is followed by the TDM or SDM or the FDM-1 or FDM-2, and the time adjustment amount of the current link is equal to the time adjustment amount of the previous link minus 2 times PT of the current link, that is, time adjustment _ hop (n +1) ═ time adjustment _ hop (n) -2 PT, where n is an integer greater than or equal to 0.

Scene three, sub-example four: the multiplexing mode is that the first link pair on the communication channel adopts SDM, the second link pair adopts FDM-2, each subsequent link pair adopts TDM, SDM, FDM-1 or FDM-2, and the FDM-2 adopted by the second link pair in this sub-example is characterized by FDM-2-minus.

In this sub-example, the timing relationship of the FDM-2-minus is the same as the timing relationship of the SDM in the second sub-example of the third sub-example of the scene, that is, the FDM-2-minus is followed by TDM or SDM or FDM-1 or FDM-2, and the time adjustment amount of the current link is equal to the time adjustment amount of the previous link plus 2 times PT of the current link, that is, time adjustment _ hop (n +1) ═ time adjustment _ hop (n) +2 × PT, where n is an integer greater than or equal to 0.

It will be apparent to those skilled in the art that the modules or steps of the embodiments of the invention described above may be implemented in a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented in program code executable by a computing device, such that they may be stored on a computer storage medium (ROM/RAM, magnetic disk, optical disk) and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. A timing method, comprising:

setting the signal transmitting time of the current link according to the time adjustment quantity of the current link;

when each link pair on the communication path adopts Time Division Multiplexing (TDM) or same-direction communication frequency division multiplexing (FDM-1), determining the time adjustment amount of the current link based on the PT and the time adjustment amount of the previous-hop link comprises:

and determining a time adjustment amount TimeAdustment _ hop (n +1) ═ TimeAdustment _ hop (n) +2 × PT of the current link, wherein n is an integer greater than or equal to 0, and the TimeAdustment _ hop (n) is the time adjustment amount of the previous link.

2. The timing method of claim 1, wherein the time adjustment is by: the communication node device on the link begins transmitting a signal at a boundary of times that is offset in time relative to the boundary of times that signal reception begins.

3. The timing method according to claim 1, wherein when the time adjustment amount of the previous-hop link is equal to 0, a boundary of a time at which a communication node apparatus on the previous-hop link starts transmitting a signal is aligned with a boundary of a time at which a signal starts receiving a signal, and the time adjustment amount of the current link is determined by the PT.

4. The timing method of claim 1, comprising at least two communication node devices on said communication path.

5. The timing method of claim 1, wherein when each link pair on the communication path employs Space Division Multiplexing (SDM) or frequency division multiplexing (FDM-2) for communication in a different direction, determining the time adjustment amount for the current link based on the PT and the time adjustment amount for the previous-hop link comprises:

when the current link is an odd-hop link, determining a time adjustment amount TimeAdustment _ hop (2n +1) ═ TimeAdustment _ hop (2n) +2 PT of the current link, wherein n is an integer greater than or equal to 0, and TimeAdustment _ hop (2n) is the time adjustment amount of the previous-hop link;

when the current link is an even-numbered hop link, determining a time adjustment quantity TimeAdustment _ hop (2n +2) -TimeAdustment _ hop (2n +1) -2 PT of the current link, wherein n is an integer greater than or equal to 0, TimeAdustment _ hop (2n +1) is the time adjustment quantity of the previous-hop link, the time adjustment quantity takes the positive value as a time lag, and the negative value as a time lead.

6. The timing method of claim 1, wherein when the first link pair adopts TDM or FDM-1 and each subsequent link pair adopts TDM, SDM, FDM-1 or FDM-2 on the communication channel, determining the time adjustment amount of the current link based on the PT and the time adjustment amount of the previous-hop link comprises:

7. The timing method of claim 1, wherein determining the time adjustment for the current link based on the time adjustments for the PT and the previous hop link when SDM is used for a first link pair and TDM, FDM-1, or FDM-2 is used for each subsequent link pair on the communication channel, or when FDM-2 is used for the first link pair and FDM, SDM, or FDM-1 is used for each subsequent link pair on the communication channel comprises:

and determining a time adjustment amount TimeAdustment _ hop (n +1) ═ TimeAdustment _ hop (n) -2 × PT of the current link, wherein n is an integer greater than or equal to 0, and the TimeAdustment _ hop (n) is the time adjustment amount of the previous link.

8. The timing method of claim 1, wherein the determining the time adjustment for the current link based on the PT and the time adjustment for the previous hop link when the first link pair employs SDM and the second link pair employs TDM or FDM-1 and the subsequent link pairs each employ TDM, SDM, FDM-1 or FDM-2 comprises:

9. The timing method of claim 1, wherein determining the time adjustment for the current link based on the PT and the time adjustment for the previous hop link when the first link pair employs SDM, the second link pair employs SDM or FDM-2, and each subsequent link pair employs TDM, SDM, FDM-1 or FDM-2 on the communication channel comprises:

when the current link is a link at the third hop and later on the communication path, determining a time adjustment amount TimeAdjustment _ hop (n +1) ═ TimeAdjustment _ hop (n) +2 PT of the current link, wherein n is an integer greater than or equal to 0, and TimeAdjustment _ hop (n) is the time adjustment amount of the link at the previous hop.

10. The timing method according to any of claims 1-9, wherein the information currently transmitted by the current link is random access response information.

11. The timing method according to any of claims 1-9, wherein when the information currently transmitted by the current link is non-random access response information, the method further comprises:

determining the time adjustment quantity of the current link as the sum of the time adjustment quantity adopted by the current link at the previous moment and a correction time adjustment quantity;

when the corrected time adjustment amount is equal to 0, the time adjustment amount of the current link is the same as the time adjustment amount adopted at the previous time, when the corrected time adjustment amount is greater than 0, the time adjustment amount of the current link is advanced relative to the time adjustment amount at the previous time, and when the corrected time adjustment amount is less than 0, the time adjustment amount of the current link lags relative to the time adjustment amount at the previous time.

12. The timing method according to any of claims 1-9, wherein the link pair consists of a backhaul link and an access link, or a backhaul link and a backhaul link, or an access link and an access link.

13. A timing device, comprising:

the processing module is used for determining the time adjustment quantity of a current link according to the signal transmission time PT of the current link at the receiving and sending ends and the time adjustment quantity of a previous link of the current link on a communication path;

the setting module is used for setting the signal transmitting time of the current link according to the time adjustment quantity of the current link;

the processing module is configured to determine a time adjustment amount of the current link, namely, time adjustment _ hop (n +1) ═ time adjustment _ hop (n) +2 PT, when each link pair of the communication path adopts TDM or FDM-1, or when a first link pair of the communication path adopts TDM or FDM-1, and each subsequent link pair adopts TDM, SDM, FDM-1, or FDM-2, where n is an integer greater than or equal to 0, and the time adjustment _ hop (n) is the time adjustment amount of the previous-hop link.

14. The timing apparatus according to claim 13, wherein the processing module is configured to determine, when each link pair of the communication path adopts SDM or FDM-2, when the current link is an odd-hop link, a time adjustment amount of the current link, namely, time adjustment _ hop (2n +1) ═ time adjustment _ hop (2n) +2 × PT, where n is an integer greater than or equal to 0, and the time adjustment _ hop (2n) is a time adjustment amount of the previous-hop link;

and when the current link is an even-numbered hop link, determining a time adjustment quantity TimeAdustment _ hop (2n +2) ═ TimeAdustment _ hop (2n +1) -2 PT of the current link, wherein n is an integer greater than or equal to 0, TimeAdustment _ hop (2n +1) is the time adjustment quantity of the previous-hop link, the time adjustment quantity takes the positive value as a time lag, and takes the negative value as a time lead.

15. The timing device according to any of claims 13-14, wherein the processing module is configured to determine the time adjustment amount of the current link, namely, timestamp adjustment _ hop (n +1) timestamp adjustment _ hop (n) -2 PT, where n is an integer greater than or equal to 0, when SDM is used for the first link pair and TDM, FDM-1 or FDM-2 is used for each subsequent link pair on the communication channel, or when SDM is used for the first link pair and TDM or FDM-1 is used for the second link pair and TDM, FDM-1 or FDM-2 is used for each subsequent link pair on the communication channel, and the timing device is configured to determine the time adjustment amount of the current link, namely, timestamp adjustment _ hop (n +1) timestamp adjustment _ hop (n) for the previous link.

16. The timing apparatus according to any one of claims 13-14, wherein the processing module is configured to determine, when the first link pair adopts SDM, the second link pair adopts SDM or FDM-2, and each subsequent link pair adopts TDM, SDM, FDM-1 or FDM-2, and when the current link is the third hop and the subsequent link on the communication path, a time adjustment amount of the current link, namely time adjustment _ hop (n +1) ═ time adjustment _ hop (n) +2 PT, where n is an integer greater than or equal to 0, and the time adjustment _ hop (n) is the time adjustment amount of the previous-hop link.

17. A communication node device comprising a processor, a memory, and a communication bus;

the processor is configured to execute one or more programs stored in the memory to implement the steps of the timing method of any one of claims 1 to 12.

18. A computer storage medium for storing one or more programs for execution by a processor to implement the steps of the timing method of any one of claims 1 to 12.