WO2018058417A1

WO2018058417A1 - Data transmission method, device, and communication system

Info

Publication number: WO2018058417A1
Application number: PCT/CN2016/100761
Authority: WO
Inventors: 汪巍崴; 周华; 王昕�
Original assignee: 富士通株式会社; 汪巍崴; 周华; 王昕�
Priority date: 2016-09-29
Filing date: 2016-09-29
Publication date: 2018-04-05

Abstract

Provided are a data transmission method, a device, and a communication system. The method comprises performing data transmission according to a predefined subframe structure, wherein the predefined subframe structure is: each subframe comprises a first quantity of symbols and a second quantity of time units, each of the symbols has a same length, and positions of the second quantity of time units in the subframes are random; or the predefined subframe structure is: each subframe comprises a first quantity of long symbols and a second quantity of short symbols, and positions of the first quantity of long symbols in the subframes are random. By means of the embodiments of the invention, when multiple subframes of users with different reference signal characteristics are multiplexed on one NR carrier frequency, it is ensured that symbols having different subcarrier spacing are aligned.

Description

Data transmission method, device and communication system

Technical field

The present invention relates to the field of communications, and in particular, to a data transmission method, apparatus, and communication system.

Background technique

In the new radio (NR, New radio) system, the Sub-Carrier Spacing (SCS) is a reference signal representation (2 ^m × 15 kHz), and the length of one subframe is 1/2 ^m ms. In the case where the overhead of the cyclic prefix (CP, Cyclic Prefix) is the same, symbols having different subcarrier spacings in one subframe, such as Orthogonal Frequency Division Multiplexing (OFDM), should be aligned. In addition, when different users (UE, User Equipment) have different reference signal representations, the subframe length also differs depending on the representation of the reference signal.

In a Long Term Evolution (LTE) system, one subframe has a length of 1 ms and includes 14 symbols, and each symbol corresponds to a subcarrier spacing of 15 kHz, wherein the lengths of the first and eighth symbols are It is longer than the length of other symbols because the cyclic prefix of these two symbols is long, as shown in Figure 1, where Ts is a time unit, which is the length of the sampling interval.

It should be noted that the above description of the technical background is only for the purpose of facilitating a clear and complete description of the technical solutions of the present invention, and is convenient for understanding by those skilled in the art. The above technical solutions are not considered to be well known to those skilled in the art simply because these aspects are set forth in the background section of the present invention.

Summary of the invention

The inventors have found that in NR, different users may have different reference signal representations, for example, the subcarrier spacing corresponding to different reference signal representations may be 3.75 KHz, 7.5 KHz, 30 KHz, 60 KHz, 120 KHz, 240 KHz, 480 KHz, and the like. If the NR also adopts a LTE-like subframe structure, when there are multiple users with different reference signal representations on one NR carrier frequency, it is difficult to ensure symbol alignment with different subcarrier spacings, as shown in FIG.

In response to the above problems, embodiments of the present invention provide a data transmission method, apparatus, and communication system.

According to a first aspect of the embodiment, a data transmission method is provided, wherein the method comprises:

Data transmission is performed according to a predefined sub-frame structure, which is:

Each subframe includes a first number of symbols and a second number of time units, each symbol having the same length, and the position of the second number of time units in the subframe is arbitrary.

According to a second aspect of the present invention, a data transmission method is provided, wherein the method comprises:

a transmission unit that performs data transmission according to a predefined subframe structure, the predefined subframe structure being:

Each subframe includes a first number of long symbols and a second number of short symbols, the position of the first number of long symbols in the subframe being arbitrary.

According to a third aspect of the present invention, a data transmission apparatus is provided, wherein the apparatus comprises:

According to a fourth aspect of the present invention, a data transmission apparatus is provided, wherein the apparatus comprises:

According to a fifth aspect of the present invention, there is provided a base station, wherein the base station has the apparatus of the foregoing third aspect or the fourth aspect.

According to a sixth aspect of the present invention, there is provided a user equipment, wherein the user equipment has the apparatus of the aforementioned third aspect or the fourth aspect.

According to a seventh aspect of the present invention, there is provided a communication system, comprising: a base station and a user equipment, wherein the base station is configured with the data transmission apparatus of the third aspect or the fourth aspect, and/ Or the user equipment is configured with the data transmission device of the foregoing third aspect or the fourth aspect.

The beneficial effects of the embodiments of the present invention are: the subframe structure adopted by the method according to the embodiment of the present invention can ensure different when multiple subframes of users with different reference signal representations are multiplexed on one NR carrier frequency. The symbol alignment of the subcarrier spacing helps the receiver to simultaneously process the symbols of different signal representations and can coexist well with the LTE system.

Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the The way that can be adopted. It should be understood that the embodiments of the invention are not limited in scope. The embodiments of the present invention include many variations, modifications, and equivalents within the scope of the appended claims.

Features described and/or illustrated with respect to one embodiment may be used in one or more other embodiments in the same or similar manner, in combination with, or in place of, features in other embodiments. .

It should be emphasized that the term "comprising" or "comprises" or "comprising" or "comprising" or "comprising" or "comprising" or "comprises"

DRAWINGS

Elements and features described in one of the figures or one embodiment of the embodiments of the invention may be combined with elements and features illustrated in one or more other figures or embodiments. In the accompanying drawings, like reference numerals refer to the

The accompanying drawings are included to provide a further understanding of the embodiments of the invention Obviously, the drawings in the following description are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings according to the drawings without any inventive labor. In the drawing:

1 is a schematic structural diagram of a subframe in an LTE system;

2 is a schematic diagram of a subframe structure of an NR system employing a subframe structure of an LTE system;

3 is a schematic diagram of a data transmission method of Embodiment 1;

4 is a schematic diagram of a subframe structure in which one subframe includes one additional time unit;

FIG. 5 is a schematic diagram showing the position of a time unit based on the subframe structure shown in FIG. 4; FIG.

6 is a schematic diagram of a subframe structure of eight consecutive subframes based on the subframe structure shown in FIG. 4;

7 is a schematic diagram of a subframe structure in which one subframe includes two additional time units;

8 is a schematic diagram showing the position of a time unit based on the subframe structure shown in FIG. 7;

9 is a schematic diagram of a subframe structure of four consecutive subframes based on the subframe structure shown in FIG. 7;

10 is a schematic diagram of a subframe structure in which one subframe includes four additional time units;

11 is a schematic diagram showing the position of a time unit based on the subframe structure shown in FIG. 10;

12 is a schematic diagram of a subframe structure of two consecutive subframes based on the subframe structure shown in FIG. 10;

13 is a schematic diagram of a subframe structure in which one subframe includes 8 additional time units;

14 is a schematic diagram of a subframe structure in which one subframe includes 16 additional time units;

15 is a schematic diagram of a subframe structure of a subframe in which a plurality of users having different reference signal representations are multiplexed on an NR carrier frequency;

16 is a schematic diagram of a data transmission method of Embodiment 2;

17 is a schematic diagram of two formats of a subframe structure in which one subframe includes one long symbol;

18 is a schematic diagram of a subframe structure of three consecutive subframes;

19 is a schematic diagram showing two formats of a subframe structure of eight consecutive subframes;

20 is a schematic diagram of two formats of a subframe structure in which one subframe includes two long symbols;

21 is a schematic diagram of a subframe structure of three consecutive subframes;

22 is a schematic diagram of two formats of a subframe structure of four consecutive subframes;

23 is a schematic diagram of two formats of a subframe structure in which one subframe includes four long symbols;

24 is a schematic diagram of a subframe structure of two consecutive subframes;

25 is a schematic diagram of two formats of a subframe structure of two consecutive subframes;

26 is a schematic diagram of two formats of a subframe structure in which a subframe includes eight long symbols;

27 is a schematic diagram of two formats of a subframe structure in which a half subframe includes one long symbol;

28 is a schematic diagram of a subframe structure of a subframe in which a plurality of users having different reference signal representations are multiplexed on an NR carrier frequency;

29 is another schematic diagram of a subframe structure of a subframe in which a plurality of users having different reference signal representations are multiplexed on an NR carrier frequency;

Figure 30 is a schematic diagram of a data transmission device of Embodiment 3;

Figure 31 is a schematic diagram of a data transmission device of Embodiment 4;

32 is a schematic diagram of a user equipment of Embodiment 5;

Figure 33 is a schematic diagram of a base station of Embodiment 6;

Figure 34 is a diagram showing the communication system of the seventh embodiment.

detailed description

The foregoing and other features of the present invention will be apparent from the The specific embodiments of the present invention are disclosed in the specification and the drawings, which are illustrated in the embodiment of the invention Invention package All modifications, variations and equivalents are intended to be included within the scope of the appended claims. Various embodiments of the present invention will be described below with reference to the accompanying drawings. These embodiments are merely exemplary and are not limiting of the invention.

In the present application, a base station may be referred to as an access point, a broadcast transmitter, a Node B, an evolved Node B (eNB), etc., and may include some or all of their functions. The term "base station" will be used herein. Each base station provides communication coverage for a particular geographic area.

In this application, a terminal or device may be referred to as a "user device." A UE may be fixed or mobile and may also be referred to as a mobile station, mobile station, access terminal, subscriber unit, station, and the like. The UE may be a cellular telephone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless telephone, a car, and the like.

The embodiments of the present invention will be described below with reference to the accompanying drawings.

Example 1

This embodiment provides a data transmission method, and FIG. 3 is a schematic diagram of the method. As shown in FIG. 3, the method includes:

Step 301: Perform data transmission according to a predefined subframe structure. The predefined subframe structure is: each subframe includes a first quantity of symbols and a second quantity of time units, and each symbol has the same length, the foregoing The position of the two number of time units in the above subframe is arbitrary.

In this embodiment, the subframe represents a time structure, and there may be other names in the actual system, such as a slot, a sub-slot, a mini-slot, etc. . The symbols in the sub-frames are used to carry signals and/or information, thereby implementing data transmission. The manner of data transmission is not limited in the embodiment of the present invention, and reference may be made to existing standards. Different from the data transmission method in the existing standard, the embodiment of the present invention adopts a newly designed subframe structure, and by defining an additional time unit in each subframe, the position of each symbol in each subframe can be flexibly set. Thus, symbol alignment with different subcarrier spacing can be guaranteed.

In this embodiment, each subframe may include X symbols and at least one time unit, and X is, for example, 14. In the following description, X=14 is taken as an example, but the embodiment is not limited thereto. .

In this embodiment, the time unit is reserved, and during the communication process, that is, during data transmission, it may not carry any data (signals and/or information), and may also carry signals/or signals. Information, such as a reference signal, etc., may also be combined with an adjacent symbol, such as a symbol on the right or a symbol on the left, to form a long symbol, which is in the process of communication, that is, during data transmission. Carry signals and / or information.

In this embodiment, various embodiments of the above time unit may be used interchangeably. For example, when there are multiple additional time units in each subframe, some of them may be reserved (without carrying information and/or signals), and another part Information and/or signals may be carried; or, some of them are reserved (without carrying information and/or signals), and the other part and adjacent symbols constitute long symbols (carrying information and/or signals); or, some of them carry information and / or signal, another part and adjacent symbols constitute a long symbol (carrying information and / or signal); or, part of it can be reserved (do not carry information and / or signals), part of which can carry information and / or signals, and There is also a portion with adjacent symbols that form a long symbol (carrying information and/or signals).

In this embodiment, each symbol in the subframe has the same length, for example, 2192Ts, 1096Ts, 548Ts, 274Ts, or 137Ts, etc., where Ts is a time unit, which is the length of the sampling interval.

In this embodiment, the length of the additional time unit may be 2Ts, or may be 16Ts, or may be other values. Tables 1 and 2 respectively show that the length of the additional time unit is 2Ts and 16Ts. In the case, an example of the relationship between the subcarrier spacing and the symbol length.

Table 1

子载波间隔Subcarrier spacing	15kHz15kHz	30kHz30kHz	60kHz60kHz	120kHz120kHz	240kHz240kHz
符号长度(Ts)Symbol length (Ts)	21922192	10961096	548548	274274	137137

Table 2

子载波间隔Subcarrier spacing	15kHz15kHz	30kHz30kHz	60kHz60kHz	120kHz120kHz	240kHz240kHz
符号长度(Ts)Symbol length (Ts)	21762176	10881088	544544	272272	136136

In this embodiment, for a plurality of consecutive subframes, the position of the time unit in one subframe is different or the same as the position of the time unit in the adjacent subframe.

In one embodiment, only one additional time unit is included in one subframe, and FIG. 4 illustrates possible locations of the additional time unit in one subframe, as shown in FIG. 4, which may be located in the first In front of the symbol, it may be between the 2nd symbol and the 3rd symbol, or between the 4th symbol and the 5th symbol, or between the 6th symbol and the 7th symbol, or at the 8th Between the symbol and the ninth symbol, or between the 10th symbol and the 11th symbol, or between the 12th symbol and the 13th symbol, or after the 14th symbol. The possible positions of the time unit shown in FIG. 4 in the subframe are only examples, and the embodiment is not limited thereto.

In the present embodiment, for a plurality of consecutive subframes, the position of the time unit in one subframe may be the same as or different from the position of the time unit in the adjacent subframe. In one example, neighbors relative to one subframe A subframe in which the position of the time unit in the subframe may be shifted to the right or left by Y (the third number) of symbols. As shown in FIG. 5, with respect to subframe A, the position of the time unit in subframe B is shifted to the right by 2 symbols. According to the subframe structure of the present example, the structure of eight consecutive subframes is as shown in FIG. 6, and the eight consecutive subframes can be repeated in time.

In another embodiment, two additional time units are included in one subframe, and FIG. 7 illustrates possible locations of the two additional time units in one subframe, as shown in FIG. 7, which may be located at the first Between the front and the 8th and 9th symbols, it may be between the 2nd and 3rd symbols and between the 10th and 11th symbols, and may also be between the 4th and 5th symbols and 12th and 13th. Between symbols, or between the sixth and seventh symbols and after the last symbol (the 14th symbol). The possible positions of the two time units shown in FIG. 7 in the subframe are only examples, and the embodiment is not limited thereto.

In the present embodiment, the two additional time units may be spaced apart from each other by Z1 (fourth number) symbols, as shown in FIG. 7, Z1=8. For multiple consecutive subframes, the location of two additional time units in one subframe may be the same as or different from the location of two additional time units in an adjacent subframe. In one example, the position of two additional time units in the subframe may be offset Y (the fifth number) of symbols to the right or left relative to the neighbor subframe of one subframe. As shown in FIG. 8, the position of two additional time units in subframe B is shifted to the right by 2 symbols with respect to subframe A. According to the subframe structure of the present example, the structure of four consecutive subframes is as shown in FIG. 9, and the four consecutive subframes can be repeated in time.

In still another embodiment, four additional time units are included in one subframe, and FIG. 10 illustrates possible positions of the four additional time units in one subframe, as shown in FIG. 10, which may be located at the first Before the symbol, between the 4th and 5th symbols, between the 8th and 9th symbols, and between the 12th and 13th symbols, or between the 2nd and 3rd symbols, the 6th and 7th symbols Between, between the 10th and 11th symbols, and after the last symbol (the 14th symbol). The possible positions of the four time units shown in FIG. 10 in the subframe are only examples, and the embodiment is not limited thereto.

In the present embodiment, the four additional time units may be spaced apart from each other by Z2 (sixth number) symbols, as shown in FIG. 10, Z2=4. For multiple consecutive subframes, the location of four additional time units in one subframe may be the same as or different from the location of four additional time units in an adjacent subframe. In one example, the position of four additional time units in the subframe may be offset Y (the seventh number) of symbols to the right or left relative to the neighbor subframe of one subframe. As shown in FIG. 11, the position of four additional time units in subframe B is shifted to the right by 2 symbols with respect to subframe A. According to the subframe structure of the present example, 2 consecutive subframes The structure is as shown in FIG. 12, and the 2 consecutive subframes can be repeated in time.

In still another embodiment, eight additional time units are included in one subframe, and FIG. 13 illustrates possible locations of the eight additional time units in one subframe, but the embodiment is not limited thereto.

In the present embodiment, the eight additional time units may be spaced apart from each other by Z3 (eighth number) of symbols, as shown in FIG. 13, Z3=2. For multiple consecutive subframes, the location of eight additional time units in one subframe may be the same as or different from the location of eight additional time units in an adjacent subframe.

In another embodiment, there are 16 additional time units in one subframe, 8 additional time units in each half subframe, and the 8 additional time units can be spaced Z4 (ninth number) from each other. Symbols, such as Z4=1, as shown in FIG. In the present embodiment, for the adjacent subframes, the positions of the 16 additional time units in each subframe are the same.

According to the above possible subframe structure, if a plurality of subframes of users having different reference signal representations are multiplexed on one NR carrier frequency, different reference signal representations mean different symbol lengths and different subcarrier spacings, then The structure with a variety of different sub-frames is shown in Figure 15.

It can be seen from the structure of FIG. 15 that, by the method of the embodiment, symbols having different subcarrier spacings are aligned, thereby facilitating the receiver to simultaneously process symbols of different signal representations, and can well cooperate with LTE. The system coexists.

Example 2

This embodiment provides a data transmission method, and FIG. 16 is a schematic diagram of the method. As shown in FIG. 16, the method includes:

Step 1601: Perform data transmission according to a predefined subframe structure. The predefined subframe structure is: each subframe includes a first number of long symbols and a second number of short symbols, where the first number of long symbols is The position in this subframe is arbitrary.

In this embodiment, each subframe may include X symbols, and X is, for example, 14. In the following description, X=14 is taken as an example, but the embodiment is not limited thereto.

In this embodiment, the X symbols in one subframe have different lengths, and the different lengths are because the symbols of different lengths have cyclic prefixes of different lengths, and the length of at least one symbol in the subframe is longer than the length of other symbols. Both are long, the symbol is said to be a long symbol, and the other symbols are short symbols. In one example, all long symbols of one subframe have the same length, and all short symbols have the same length. In another example, in one subframe All long symbols have the same length and all short symbols have different lengths. In another example, all long symbols in one subframe have different lengths, and all short symbols have the same length. In another example, a symbol whose symbol length is greater than one threshold is a long symbol, and a short symbol, and the lengths of all long symbols in one subframe are different, and the lengths of all short symbols are different.

In this embodiment, the symbols in the subframe are used to carry signals and/or information, thereby implementing data transmission. The manner of data transmission is not limited in the embodiment of the present invention, and may refer to existing standards. Different from the data transmission method in the existing standard, the embodiment of the present invention adopts a newly designed subframe structure, by defining long symbols and short symbols in each subframe, and not limiting the position of the long symbols. This ensures symbol alignment with different subcarrier spacing.

In the present embodiment, the lengths of the long symbols and the short symbols are different for different subcarrier spacings, and Tables 3 and 4 give two examples of the lengths of the long symbols and the short symbols.

table 3

子载波间隔Subcarrier spacing	15kHz15kHz	30kHz30kHz	60kHz60kHz	120kHz120kHz	240kHz240kHz
长符号长度(Ts)Long symbol length (Ts)	21962196	10981098	550550	276276	139139
短符号长度(Ts)Short symbol length (Ts)	21942194	10961096	548548	274274	137137

Table 4

子载波间隔Subcarrier spacing	15kHz15kHz	30kHz30kHz	60kHz60kHz	120kHz120kHz	240kHz240kHz
长符号长度(Ts)Long symbol length (Ts)	22082208	11041104	560560	288288	152152
短符号长度(Ts)Short symbol length (Ts)	21922192	10881088	544544	272272	136136

In this embodiment, for a plurality of consecutive subframes, the position of the long symbol in one subframe may be the same as or different from the position of the long symbol in the adjacent subframe. In the plurality of consecutive subframes, the long symbols may be spaced apart by a third number (J) of short symbols, or it may be said that in the plurality of consecutive subframes, the number of the long symbols in one subframe is increased. Or reducing the predetermined value (K) is the sequence number of the long symbol in the adjacent subframe.

In one embodiment, one subframe contains a long symbol, which may be located anywhere in the subframe.

Figure 17 illustrates the possible locations of the long symbol in one subframe. Moreover, FIG. 17 shows two different formats, that is, for a case where one subframe contains one long symbol, the eight-seed frame structure of the format 1 shown in FIG. 17 can be used, or FIG. 17 can also be used. The format of the eight-seed frame structure. However, the possible positions of the long symbol shown in FIG. 17 in the subframe are merely examples, and the embodiment is not limited thereto.

In the present embodiment, for a plurality of consecutive subframes, the position of the long symbol in one subframe may be the same as or different from the position of the long symbol in the adjacent subframe. In one example, in these consecutive sub-frames, J (the third number) short symbols may be spaced between the long symbols, or the sequence number of the long symbols in one subframe may be increased or decreased by K (predetermined value), The sequence number of the long symbol in the adjacent subframe can be obtained.

As shown in FIG. 18, the eleventh symbol in subframe A, the thirteenth symbol in subframe B, and the fourteenth symbol in subframe C are long symbols. The eleventh symbol in subframe A is separated from the thirteenth symbol in subframe B by 15 symbols (J=15), and the thirteenth symbol in subframe B and the fourteenth symbol in subframe C. 14 symbols apart (J=14). In other words, the sequence number of the long symbol in the subframe B is equal to the sequence number of the long symbol in the subframe A plus 2 (K=2), however, the sequence number of the long symbol in the subframe C is equal to the long symbol in the subframe B. The serial number is incremented by 1 (K = 1).

Figure 19 shows two examples of eight consecutive subframes that can be repeated in time. The two examples of FIG. 19 correspond to the subframe structures of format 1 and format 2 shown in FIG. 17, respectively.

In another embodiment, one subframe contains two long symbols, and the two long symbols may be located at any position of the subframe.

Figure 20 illustrates the possible locations of the two long symbols in one subframe. Moreover, FIG. 20 shows two different formats, that is, for a case where one subframe includes two long symbols, a four-seed frame structure of the format 1 shown in FIG. 20 may be employed, or FIG. 20 may be employed. The four-seed frame structure of format 2 is shown. In this example, Z1 (fourth number) short symbols may be spaced between the two long symbols, as shown in FIG. 20, Z1=6 or 7. However, the possible positions of the long symbol shown in FIG. 20 in the subframe are only examples, and the embodiment is not limited thereto.

For two long symbols in one subframe, the sequence numbers of two long symbols in adjacent subframes can be obtained by increasing or decreasing different Ks. As shown in FIG. 21, the 3rd and 11th symbols in the subframe A, the 5th and 13th symbols in the subframe B, and the 7th and 14th symbols in the subframe C are both Long symbol. The 3rd and 11th long symbols in subframe A, the 5th and 13th long symbols in subframe B, and the 7th long symbol in subframe C are separated by 7 symbols (J=7) ), and the 7th long symbol in subframe C is separated from the 14th long symbol by 6 symbols (J=6). In other words, the sequence number of two long symbols in subframe B can be determined by subframe A. The sequence number of the two long symbols in the middle is added to get (K=2). However, the sequence number of the two long symbols in the subframe C is equal to the number of the two long symbols in the subframe B plus 2 (K=2). And add 1 (K = 1).

Figure 22 shows two examples of four consecutive subframes that can be repeated in time. The two examples of Fig. 22 correspond to the subframe structures of format 1 and format 2 shown in Fig. 20, respectively.

In another embodiment, one subframe contains four long symbols, which may be located anywhere in the subframe.

Figure 23 illustrates the possible locations of the four long symbols in one subframe. Moreover, FIG. 23 shows two different formats, that is, for a case where one subframe includes four long symbols, two subframe structures of the format 1 shown in FIG. 23 can be used, or FIG. 23 can also be used. Two sub-frame structures of format 2 are shown. In this example, each of the four long symbols may be separated by a Z2 (fourth number) short symbol, as shown in FIG. 23, Z2=2 or 3. However, the possible positions of the long symbol shown in FIG. 23 in the subframe are only examples, and the embodiment is not limited thereto.

In the present embodiment, for a plurality of consecutive subframes, the position of the long symbol in one subframe may be the same as or different from the position of the long symbol in the adjacent subframe. In one example, in these consecutive subframes, the long symbols may be spaced J (the third number) of short symbols, or the sequence number of the long symbols in one subframe may be increased or decreased by K (predetermined value), The sequence number of the long symbol in the adjacent subframe is obtained.

For four long symbols in one subframe, the sequence numbers of four long symbols in adjacent subframes can be obtained by increasing or decreasing different Ks. As shown in FIG. 24, the first, fifth, ninth, and thirteenth symbols in the subframe A, and the third, seventh, eleventh, and fourteenth symbols in the subframe B are long symbols. For the 1st, 5th, 9th, and 13th symbols in the subframe A and the 3rd, 7th, and 11th symbols in the subframe B, the two long symbols are separated by 3 symbols (J=3), but the subframe B The 11th symbol and the 14th long symbol are separated by 2 symbols (J=2). In other words, the sequence numbers of the four long symbols in the subframe B can be obtained by adding the numbers of the four long symbols in the subframe A by 2 (K=2) and adding 1 (K=1), respectively.

Figure 25 shows two examples of two consecutive subframes that can be repeated in time. The two examples of Fig. 25 correspond to the subframe structures of the format 1 and the format 2 shown in Fig. 23, respectively.

In another embodiment, one subframe contains eight long symbols, which may be located anywhere in the subframe.

Figure 26 illustrates the location of these eight long symbols. Moreover, FIG. 26 shows two different formats, that is, for a case where one subframe contains eight long symbols, the subframe structure of the format 1 shown in FIG. 26 may be employed, or as shown in FIG. The subframe structure of format 2. In this example, each of the eight long symbols The long symbols of the neighbors may be separated by a Z3 (fourth number) short symbols, as shown in Fig. 26, Z3 = 0 or 1. However, the possible positions of the long symbol shown in FIG. 26 in the subframe are merely examples, and the embodiment is not limited thereto.

In this embodiment, for a plurality of consecutive subframes, the position of the long symbol in one subframe may be the same as the position of the long symbol in the adjacent subframe, or may be different, for example, one subframe adopts the format 1 of FIG. The sub-frame structure, the adjacent sub-frame adopts the sub-frame structure of the format 2 of FIG.

In another embodiment, one subframe contains fourteen symbols, and one half of the subframes contain a long symbol located at the position of the first symbol of the half subframe or the position of the last symbol of the half subframe.

Figure 27 shows two different formats, that is, for a case where half of the subframes contain one long symbol, the subframe structure of the format 1 shown in Fig. 27 may be employed, or the sub-frame of the format 2 of Fig. 27 may be employed. Frame structure.

According to the above possible subframe format, if a plurality of subframes of users having different reference signal representations are multiplexed on one NR carrier frequency (different reference signal representations mean different symbol lengths and different subcarrier spacings), then The structure for multiplexing a plurality of different sub-frames is as shown in FIG. 28 or FIG.

As can be seen from the structure of FIG. 28 or FIG. 29, by the method of the embodiment, symbols having different subcarrier spacings are aligned, thereby facilitating the receiver to simultaneously process symbols of different signal representations, and can be well Coexist with the LTE system.

Example 3

The present embodiment provides a data transmission device. The principle of the device is similar to that of the first embodiment. Therefore, the specific implementation may refer to the implementation of the method in the first embodiment.

FIG. 30 is a schematic diagram of the data transmission apparatus of the embodiment. As shown in FIG. 30, the apparatus 3000 includes: a transmission unit 3001, which performs data transmission according to a predefined subframe structure, where the predefined subframe structure is: Each subframe includes a first number of symbols and a second number of time units, each symbol having the same length, and the position of the second number of time units in the subframe is arbitrary.

In one embodiment of the present embodiment, the time unit is reserved, and it does not carry signals and/or information during data transmission. In another embodiment of this embodiment, the time unit is in the data transmission process It can carry signals and/or information, such as reference signals. In another embodiment of this embodiment, the time unit is combined with an adjacent symbol to form a long symbol that carries signals and/or information during data transmission.

In this embodiment, the foregoing three manners of the time unit may be used in combination. For example, in each subframe, the number of the time units is multiple, and some of the plurality of time units are reserved in data transmission. In the process, the part of the time unit does not carry signals and/or information, and another part of the plurality of time units is combined with an adjacent symbol to form a long symbol, and the long symbol carries the signal and/or during data transmission. Or information; or, a part of the plurality of time units are reserved, during the data transmission, the part of the time unit does not carry signals and/or information; and another part of the plurality of time units is in the data transmission process Carrying signals and/or information; or a portion of the plurality of time units carrying signals and/or information during data transmission, and another portion of the plurality of time units is combined with an adjacent one to form a long a symbol that carries a signal and/or information during data transmission; or, a plurality of the time units are reserved, in the data transmission In the process, the part of the time unit does not carry signals and/or information, and a part of the plurality of time units carry signals and/or information during data transmission, and another part of the plurality of time units and the adjacent one The symbols are combined to form a long symbol that carries signals and/or information during data transmission.

In this embodiment, for a plurality of consecutive subframes, the position of the time unit in one subframe is the same as or different from the position of the time unit in the adjacent subframe.

In one embodiment, the number of the time units is one in each subframe, and the position of the time unit in the subframe is offset by a third number (Y) with respect to the neighbor subframe of one subframe. symbol.

In another embodiment, in each subframe, the number of time units is two, and two of the time units are spaced apart from each other by a fourth number (Z1) of symbols, relative to neighbors of one subframe. A frame in which the position of two time units in the subframe is offset by a fifth number (Y) of symbols.

In still another embodiment, in each subframe, the number of time units is four, and four of the time units are spaced apart from each other by a sixth number (Z2) of symbols, relative to neighbors of one subframe. A frame in which the positions of the four time units in the subframe are offset by a seventh number (Y) of symbols.

In still another embodiment, in each subframe, the number of time units is eight, and eight of the time units are spaced apart from each other by an eighth number (Z3) of symbols.

In still another embodiment, in each subframe, the number of time units is 16, and eight of the time units in each half of the subframe are spaced apart from each other by a ninth number (Z4) of symbols.

The subframe structure of the above different embodiments is applicable to different subcarrier spacings (different reference signal representations), that is, different subframe structures may be selected according to different subcarrier spacings.

With the apparatus of this embodiment, it is possible to ensure that symbols having different subcarrier spacings are aligned.

Example 4

The present embodiment provides a data transmission device. The principle of the device is similar to that of the second embodiment. Therefore, the specific implementation may refer to the implementation of the method in the second embodiment.

FIG. 31 is a schematic diagram of the data transmission apparatus of the embodiment. As shown in FIG. 31, the apparatus 3100 includes: a transmission unit 3101, which performs data transmission according to a predefined subframe structure, where the predefined subframe structure is: Each subframe includes a first number of long symbols and a second number of short symbols, the position of the first number of long symbols in the subframe being arbitrary.

In this embodiment, for a plurality of consecutive subframes, the position of the long symbol in one subframe is the same as or different from the position of the long symbol in the adjacent subframe.

In the present embodiment, in the plurality of consecutive sub-frames, the long symbols are separated by a third number (J) of short symbols. In other words, in the plurality of consecutive subframes, the sequence number of the long symbol in one subframe is increased or decreased by a predetermined value (K) as the sequence number of the long symbol in the adjacent subframe.

In one embodiment, each subframe contains 1 long symbol.

In the present embodiment, for a plurality of consecutive subframes, the position of one long symbol in one subframe may be offset by two symbols or one symbol with respect to the position of one long symbol in the adjacent subframe.

In another embodiment, each subframe contains 2 long symbols separated by a fourth number (Z1) of short symbols.

In the present embodiment, for a plurality of consecutive subframes, the position of two long symbols in one subframe may be offset by two symbols or one symbol with respect to the position of two long symbols in the adjacent subframe.

In still another embodiment, each subframe includes 4 long symbols separated by a fourth number (Z2) of short symbols.

In the present embodiment, for a plurality of consecutive subframes, the positions of the four long symbols in one subframe may be offset by two symbols or one symbol from the positions of the four long symbols in the adjacent subframe.

In still another embodiment, each subframe includes 8 long symbols, and the 8 long symbols are separated by a fourth number. The short symbol of the quantity (Z3).

In the present embodiment, for a plurality of consecutive subframes, the position of 8 long symbols in one subframe may be offset by zero symbols or one symbol with respect to the position of 8 long symbols in adjacent subframes.

In still another embodiment, each half of the subframe includes 1 long symbol, the long symbol being located in the first symbol of the half subframe or the last symbol of the half subframe.

In the present embodiment, for a plurality of consecutive subframes, the position of two long symbols in one subframe may be shifted by six symbols with respect to the position of two long symbols in the adjacent subframe.

Example 5

This embodiment provides a user equipment configured with the

data transmission device

3000 or 3100 as described in Embodiment 3 or Embodiment 4.

FIG. 32 is a schematic block diagram showing the system configuration of the user equipment 3200 according to the embodiment of the present invention. As shown in FIG. 32, the terminal 3200 can include a central processor 3201 and a memory 3202; the memory 3202 is coupled to the central processor 3201. It should be noted that the figure is exemplary; other types of structures may be used in addition to or in place of the structure to implement telecommunications functions or other functions.

In one embodiment, the functionality of the data transfer device 3000/3100 can be integrated into the central processor 3201. The central processing unit 3201 may be configured to implement the data transmission method described in Embodiment 1 or Embodiment 2.

For example, the central processing unit 3201 can be configured to perform control for data transmission according to a predefined subframe structure, the predefined subframe structure being: each subframe includes a first number of symbols and a second number a time unit, each symbol has the same length, and the position of the second number of time units in the foregoing subframe is arbitrary; or: each subframe includes a first number of long symbols and a second number of short symbols, The position of the first number of long symbols in the above sub-frame is arbitrary.

In another embodiment, the data transmission device 3000/3100 can be configured separately from the central processing unit 3201. For example, the data transmission device 3000/3100 can be configured as a chip connected to the central processing unit 3201 by the control of the central processing unit 3201. Realize the function of the data transmission device 3000/3100.

As shown in FIG. 32, the user equipment 3200 may further include: a communication module 3203, an input unit 3204, an audio processing unit 3205, a display 3206, and a power source 3207. It should be noted that the user equipment 3200 does not have to include all the components shown in FIG. 32; in addition, the user equipment 3200 may further include components not shown in FIG. 32, and reference may be made to the prior art.

As shown in FIG. 32, central processor 3201, sometimes referred to as a controller or operational control, can include a microprocessor or other processor device and/or logic device that receives input and controls each of user devices 3200. The operation of the part.

The memory 3202 may be, for example, one or more of a buffer, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory, or other suitable device. Information such as the above-described subframe structure can be stored, and a program for executing related information can be stored. And the central processing unit 3201 can execute the program stored by the memory 3202 to implement information storage or processing and the like. The functions of other components are similar to those of the existing ones and will not be described here. The various components of user device 3200 can be implemented by dedicated hardware, firmware, software, or a combination thereof without departing from the scope of the invention.

With the user equipment of this embodiment, the data transmission device 3000/3100 of the present embodiment is used for data transmission, and it is ensured that symbols having different subcarrier spacings are aligned.

Example 6

The embodiment provides a base station configured with the

data transmission device

3000 or 3100 as described in Embodiment 3 or Embodiment 4.

Figure 33 is a block diagram showing the structure of a base station according to an embodiment of the present invention. As shown in FIG. 33, the base station 3300 can include a central processing unit (CPU) 3301 and a memory 3302; the memory 3302 is coupled to the central processing unit 3301. Wherein the memory 3302 can store various data; in addition, a program for information processing is stored, and the program is executed under the control of the central processing unit 3301 to receive various information transmitted by the user equipment, and send various information to the user equipment. .

In one embodiment, the functionality of the data transfer device 3000/3100 can be integrated into the central processor 3301. The central processing unit 3301 may be configured to implement the data transmission method described in Embodiment 1 or Embodiment 2.

For example, the central processing unit 3301 can be configured to perform control for data transmission according to a predefined subframe structure, the predefined subframe structure being: each subframe includes a first number of symbols and a second a number of time units, each symbol having the same length, the position of the second number of time units in the above subframe is arbitrary; or: each subframe includes a first number of long symbols and a second number of short symbols The position of the first number of long symbols in the above subframe is arbitrary.

In another embodiment, the data transmission device 3000/3100 may be configured separately from the central processing unit 3301. For example, the data transmission device 3000/3100 may be configured as a chip connected to the central processing unit 3301, and controlled by the central processing unit 3301. To realize the function of the data transmission device 3000/3100.

In addition, as shown in FIG. 33, the base station 3300 may further include: a transceiver 3303, an antenna 3304, and the like; wherein the functions of the foregoing components are similar to those of the prior art, and details are not described herein again. It should be noted that the base station 3300 does not necessarily have to include all of the components shown in FIG. 33; in addition, the base station 3300 may also include components not shown in FIG. 33, and reference may be made to the prior art.

With the base station of this embodiment, the data transmission device 3000/3100 of the embodiment is used for data transmission, and it is ensured that symbols having different subcarrier spacings are aligned.

Example 7

This embodiment provides a communication system, including a base station and a user equipment.

FIG. 34 is a schematic diagram showing the configuration of a communication system according to an embodiment of the present invention. As shown in FIG. 34, the communication system 3400 includes a base station 3401 and a user equipment 3402. The base station 3401 may be the base station 3300 described in Embodiment 6; the user equipment 3402 may be the user equipment 3200 described in Embodiment 5.

Since the user equipment 3200 and the base station 3300 have been described in detail in the foregoing embodiments, the content thereof is incorporated herein, and details are not described herein again.

With the communication system of this embodiment, the data transmission device 3000/3100 of the present embodiment is used for data transmission, and it is ensured that symbols having different subcarrier spacings are aligned.

The embodiment of the present invention further provides a computer readable program, wherein when the program is executed in a data transmission device or a user equipment or a base station, the program causes the data transmission device or the user equipment or the base station to perform Embodiment 1 or The data transmission method described in Embodiment 2.

The embodiment of the present invention further provides a storage medium storing a computer readable program, wherein the computer readable program causes the data transmission device or the user equipment or the base station to execute the data transmission method described in Embodiment 1 or Embodiment 2.

The above apparatus and method of the present invention may be implemented by hardware or by hardware in combination with software. The present invention relates to a computer readable program that, when executed by a logic component, enables the logic component to implement the apparatus or components described above, or to cause the logic component to implement the various methods described above Or steps. The present invention also relates to a storage medium for storing the above program, such as a hard disk, a magnetic disk, an optical disk, a DVD, a flash memory, or the like.

The data transmission method in the data transmission apparatus described in connection with the embodiments of the present invention may be directly embodied as hardware, a software module executed by a processor, or a combination of both. For example, one or more of the functional block diagrams shown in FIG. 30 or FIG. 31 and/or one or more combinations of functional block diagrams may correspond to respective software modules of a computer program flow, or may correspond to respective hardware modules. . These software modules may correspond to the respective steps shown in FIG. 3 or FIG. 16 respectively. These hardware modules can be implemented, for example, by curing these software modules using a Field Programmable Gate Array (FPGA).

The software module can reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art. A storage medium can be coupled to the processor to enable the processor to read information from, and write information to, the storage medium; or the storage medium can be an integral part of the processor. The processor and the storage medium can be located in an ASIC. The software module can be stored in the memory of the mobile terminal or in a memory card that can be inserted into the mobile terminal. For example, if a device (such as a mobile terminal) uses a larger capacity MEGA-SIM card or a large-capacity flash memory device, the software module can be stored in the MEGA-SIM card or a large-capacity flash memory device.

One or more of the functional block diagrams described with respect to FIG. 30 or FIG. 31 and/or one or more combinations of functional block diagrams may be implemented as a general purpose processor, digital signal processor (DSP) for performing the functions described herein. An application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, or any suitable combination thereof. One or more of the functional block diagrams described with respect to FIG. 30 or FIG. 31 and/or one or more combinations of functional block diagrams may also be implemented as a combination of computing devices, eg, a combination of a DSP and a microprocessor, multiple micro A processor, one or more microprocessors in communication with the DSP, or any other such configuration.

The present invention has been described in connection with the specific embodiments thereof, and it should be understood by those skilled in the art that A person skilled in the art can make various modifications and changes to the invention in accordance with the principles of the invention, which are also within the scope of the invention.

Claims

A data transmission device, wherein the device comprises:

a transmission unit that performs data transmission according to a predefined subframe structure, the predefined subframe structure being:

Each subframe includes a first number of symbols and a second number of time units, each symbol having the same length, and the position of the second number of time units in the subframe is arbitrary.
The device according to claim 1, wherein

The time unit is reserved, and the time unit does not carry signals and/or information during data transmission.
The device according to claim 1, wherein

The time unit carries signals and/or information during data transmission.
The device according to claim 1, wherein

The time unit is combined with an adjacent symbol to form a long symbol, and the long symbol carries signals and/or information during data transmission.
The apparatus according to claim 1, wherein, in each subframe, the number of the time units is plural, and

A portion of the plurality of time units is reserved, the time unit does not carry signals and/or information during data transmission, and another one of the plurality of time units is merged with an adjacent one of the symbols a long symbol that carries signals and/or information during data transmission; or,

A portion of the plurality of time units are reserved, the time unit does not carry signals and/or information during data transmission, and another of the plurality of time units carries signals and/or information; or ,

A part of the plurality of time units carries signals and/or information during data transmission, and another part of the plurality of time units is combined with an adjacent one symbol to form a long symbol, during data transmission, The long symbol carries the signal and/or information; or,

A portion of the plurality of time units are reserved, the time unit does not carry signals and/or information during data transmission, and a portion of the plurality of time units carry signals and/or during data transmission Or information, another portion of the plurality of time units is combined with an adjacent symbol to form a long symbol, the long symbol carrying signals and/or information during data transmission.
The apparatus of claim 1, wherein for a plurality of consecutive subframes, a location of a time unit in one subframe is the same as or different from a location of a time unit in an adjacent subframe.
The apparatus according to claim 6, wherein, in each subframe, the number of the time units is one, and the position of the time unit in the subframe is offset with respect to the neighbor subframe of one subframe Move the third number of symbols.
The apparatus according to claim 6, wherein, in each subframe, the number of the time units is two, and two of the time units are spaced apart from each other by a fourth number of symbols with respect to one subframe Neighbor subframe, the position of 2 time units in the subframe is offset by a fifth number of symbols.
The apparatus according to claim 6, wherein, in each subframe, the number of said time units is four, and four of said time units are spaced apart from each other by a sixth number of symbols with respect to one subframe Neighbor subframe, the position of 4 time units in the subframe is offset by a seventh number of symbols.
The apparatus according to claim 6, wherein, in each subframe, the number of the time units is eight, and eight of the time units are spaced apart from each other by an eighth number of symbols.
The apparatus of claim 6, wherein, in each subframe, the number of the time units is 16, and eight of the time units in each half of the subframes are spaced apart from each other by a ninth number of symbols.
A data transmission device, wherein the device comprises:

a transmission unit that performs data transmission according to a predefined subframe structure, the predefined subframe structure being:

Each subframe includes a first number of long symbols and a second number of short symbols, the position of the first number of long symbols in the subframe being arbitrary.
The apparatus of claim 12, wherein for a plurality of consecutive subframes, the position of the long symbol in one subframe is the same as or different from the position of the long symbol in the adjacent subframe.
The apparatus of claim 13, wherein a third number of short symbols are spaced between the long symbols in the plurality of consecutive subframes.
The apparatus according to claim 13, wherein, in said plurality of consecutive subframes, a sequence number of a long symbol in one subframe is increased or decreased by a predetermined value as a sequence number of a long symbol in an adjacent subframe.
The apparatus of claim 12 wherein each subframe comprises 1 long symbol.
The apparatus of claim 12, wherein each subframe comprises 2 or 4 or 8 long symbols, and a fourth number of short symbols are spaced between each adjacent two long symbols.
The apparatus of claim 12, wherein each half of the subframes comprises 1 long symbol, the long symbol being located in a first symbol of the half subframe or a last symbol of the half subframe.
A communication system comprising a base station and a user equipment, wherein the base station is configured with the data transmission device according to any one of claims 1 to 18, and/or the user equipment is configured with claim 1 The data transmission device of any of -18.