CN102281229B

CN102281229B - The collocation method and device of a kind of conversion interval in communication system

Info

Publication number: CN102281229B
Application number: CN201110244252.5A
Authority: CN
Inventors: 刘锟; 鲁照华; 宁迪浩; 郁光辉; 胡留军
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2011-08-24
Filing date: 2011-08-24
Publication date: 2017-12-05
Anticipated expiration: 2031-08-24
Also published as: CN102281229A; WO2012155680A1

Abstract

The invention discloses a configuration method and device for uplink and downlink switching intervals in a communication system. In a communication system using OFDM technology, the sampling frequency is F hertz, and the time domain sampling interval is Ts seconds, the invention converts the downlink in the frame to The uplink conversion interval DUGI length is set to N1*(N2*Ts)+T1, and the uplink to downlink conversion interval UDGI length in the frame is set to M1*(M2*Ts)+T2; said N1, N2, T1, M1, M2, and T2 are all positive integers greater than or equal to zero, configured by the base station to the terminal through the downlink channel, or using default configuration values. The present invention can flexibly meet the needs of the base station and the terminal for switching time delay in different scenarios, and can use time-frequency resources to the greatest extent without causing waste of resources.

Description

Method and device for configuring conversion interval in communication system

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for configuring a transition interval in a communication system using an OFDM (Orthogonal frequency division Multiplexing) technology.

Background

With the development of mobile internet and the popularization of smart phones, the demand of mobile data traffic is rapidly increasing, and the rapidly increasing data traffic poses a serious challenge to the transmission capability of a mobile communication network. Mobile data traffic will also double each year and ten years will double by one thousand times as predicted by authorities within the next decade (2011-.

Most mobile data services mainly occur in indoor and hot spot environments, and are reflected in a nomadic/local wireless access scene. Statistically, nearly 70% of the mobile data traffic currently occurs indoors, and this proportion will continue to increase, with an expectation that it will exceed 80% by 2012. The data service is mainly internet service, and has a single requirement on the service quality, which is far lower than the requirement on the service quality of the traditional telecommunication service. The cellular mobile communication system is mainly designed for the traditional telecommunication service of high-speed movement and seamless switching, and when the cellular mobile communication system bears the large-flow low-speed IP (internet protocol) data packet service, the efficiency is low and the cost is overhigh.

Currently, the existing solutions suitable for nomadic/local wireless data access mainly include IEEE (Institute of electrical and Electronics Engineers) 802.11 series standards, and the new shore line company in China dominates the NUHT (Next Ultra-High throughput) standard. The NUHT standard employs OFDM technology and configures a frame structure of TDD, and a transition interval (DGI) from downlink to uplink and a transition interval (UGI) from uplink to downlink are described using an integer multiple of an OFDM symbol length. Considering that the requirements of the base station (Access Point, AP, Access Point) and the terminal for the transition delay are not consistent, the DGI time length is generally required to be greater than UGI. Since the types of terminals in indoor and hot spot environments are very different and the requirements for conversion delay are not the same, if the length of an OFDM symbol is taken as the minimum time unit for describing DGI and UGI, a part of resources are wasted due to excessively large quantization granularity, as shown in fig. 1, a reasonable DGI value is T1 after the terminal is considered to have the requirements for conversion delay, but since the DGI is configured to be an integer multiple of the length of the OFDM symbol, only 2 OFDM symbols can be allocated to the DGI, which causes waste of resources. When a frame structure with a fixed length is used, a time-frequency resource smaller than the OFDM symbol length is generated because the length of the frame is not necessarily an integer multiple of the OFDM symbol length, and the use of the resource is considered in the design of the DGI and the UGI.

Based on the above analysis, the present invention provides a method for designing an uplink/downlink transition interval in a communication system, which can flexibly meet the requirements of a base station and a terminal for transition delay in different scenarios, and can use time-frequency resources to the maximum extent without causing resource waste.

Disclosure of Invention

In view of the above, the main objective of the present invention is to provide a method and an apparatus for configuring an uplink and downlink transition interval in a communication system, so as to solve the technical problems that the existing DGI and UGI configuration method is easy to cause resource waste and cannot meet the requirements of a base station and a terminal for transition delay in different scenarios.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

the technical scheme 1: according to an aspect of the present invention, there is provided a method for designing an uplink/downlink transition interval in a communication system, the method comprising:

in a communication system adopting the OFDM technology and having a sampling frequency of F (hertz, Hz), a time-domain sampling interval is Ts (seconds, s), where Ts is 1/F. The length of the down-to-up transition interval DUGI is N1 × N2 × Ts) + T1, and the length of the up-to-down transition interval UDGI is M1 × M2 × Ts) + T2, wherein N1, N2, T1, M1, M2, and T2 are all sent to the terminal by the base station through a down channel, or adopt a default configuration value.

The sampling frequency F is the maximum sampling frequency of the system or is divided by integral multiple of the maximum sampling frequency of the system.

The technical scheme 2 is as follows: based on technical solution 1, the configuration of T1 is T1 ═ k1 × Ts, and the configuration of T2 is T2 ═ k2 × Ts, where k1 and k2 are positive integers greater than or equal to zero, and the positive integers are transmitted from the base station to the terminal through a downlink channel, or default configuration values are adopted.

Technical scheme 3: based on claim 2, the (N2 × Ts) is the minimum quantization granularity of the DUGI, and N1 is a multiple of the minimum quantization granularity of the DUGI; (M2 × Ts) is the minimum quantization particle size of UDGI, M1 is a multiple of the minimum quantization particle size of UDGI; wherein N1, N2, M1 and M2 are positive integers not less than zero.

The technical scheme 4 is as follows: based on technical scheme 3, both the minimum quantization granularity of the DUGI and the minimum quantization granularity of the UDGI are configured to be an OFDM symbol length T_OFDMConfiguring both said (N2 × Ts) and said (M2 × Ts) as T_OFDMFrom this, the DUGI length N1 × T_OFDM+ T1 UDGI Length M1 × T_OFDM+T2。

Preferably, based on technical scheme 1, the DUGI length is greater than or equal to the UDGI length;

preferably, based on technical solution 4, the values of T1 ═ k1 × Ts and T2 ═ k2 × Ts are both smaller than the length T of the OFDM symbol_OFDM；

The technical scheme 5 is as follows: based on the technical scheme 4, when the frame length is T_FrameAnd only 1 DUGI and 1 UDGI are configured in 1 frame, with T_RemainRepresents the length of the remaining resources in 1 frame except for integer multiples of OFDM symbols in the time domain:

whereinRepresents a rounding down operation, L being a positive integer greater than zero;

when the length of T1 is configured as T_RemainWhen k1 is L, T2 is 0, i.e., k2 is 0;

when the length of T2 is configured as T_RemainWhen k2 is L, T1 is 0, i.e., k1 is 0;

when the length of T1+ T2 is configured as T_RemainThen k1+ k2 equals L.

The technical scheme 6 is as follows: based on the technical scheme 4, when the frame length is T_FrameAnd 1 intra-frame configuration N_DUGIDUGI and N_UDGIFor UDGI, with T_RemainRepresents the length of the remaining resources in 1 frame except for integer multiples of OFDM symbols in the time domain:

whereinRepresenting operations with rounded-down, L being a positive integer greater than zero, N_DUGIAnd N_UDGIAre all positive integers greater than or equal to 1;

when the length of T1 is configured as T_Remain/N_DUGIWhen k1 is equal to L/N_DUGIMeanwhile, T2 is 0, i.e., k2 is 0;

when the length of T2 is configured as T_Remain/N_UDGIWhen k2 is equal to L/N_UDGIMeanwhile, T1 is 0, i.e., k1 is 0;

when N is to be_DUGI*T1+N_UDGILength of T2 is configured as T_RemainWhen it is, then N_DUGI*k1+N_UDGI*k2＝L。

Based on the embodiment of the present invention, the present invention further provides a device for configuring an uplink/downlink conversion interval in a communication system, where the device is applied to a communication system that adopts an OFDM technique and has a time domain sampling interval of Ts seconds, and the device includes:

a DUGI configuration module, configured to set a length of a down-to-up transition interval DUGI in the frame to N1 (N2 Ts) + T1, where T1 is k1 Ts;

a UDGI configuration module configured to set a UDGI length of an up-to-down transition interval in a frame to M1 (M2 Ts) + T2, where T2 is k2 Ts;

and the parameter configuration module is used for configuring the values of the parameters N1, N2, k1, M1, M2 and k2, and configuring the parameters to the terminal through a downlink channel, or configuring default values of the parameters for a network side or a terminal side.

The length of a conversion interval DUGI from the descending to the ascending in the frame is set to be N1 (N2 Ts) + T1, and the length of a conversion interval UDGI from the ascending to the descending in the frame is set to be M1 (M2 Ts) + T2; the network side can flexibly configure parameters such as N1, N2, T1, M1, M2, T2 and the like according to the requirements of the base station and the terminal on the conversion delay under different scenes, so that time-frequency resources can be used to the maximum extent, and the waste of the resources is not caused.

Drawings

FIG. 1 is a schematic illustration of the location distribution of DGIs and UGIs in a frame in a communication system;

FIG. 2 is a schematic diagram of a DUGI and UDGI site distribution in the method of the invention;

FIG. 3 is a schematic diagram of another DUGI and UDGI site distribution in the method of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings by way of examples.

Example 1

In a communication system adopting the OFDM technology and having a sampling frequency of F (hertz, Hz), a time-domain sampling interval is Ts (seconds, s), where Ts is 1/F.

The length of the down to up transition Interval (DUGI) is configured to be N1 (N2 Ts) + T1, and the length of the up to down transition Interval (UDGI) is configured to be M1 (M2 Ts) + T2, as shown in fig. 2.

Wherein,

n1, N2, T1, M1, M2 and T2 are all positive integers which are more than or equal to zero;

(N2 × Ts) is the minimum quantization granularity of the DUGI, T1 is an integer multiple of Ts, T1 is k1 × Ts, and N1 is a multiple of the minimum quantization granularity of the DUGI;

(M2 × Ts) is the minimum quantization particle size of UDGI, T2 is an integer multiple of Ts, T2 is k2 × Ts, and M1 is a multiple of the minimum quantization particle size of UDGI;

the N1, N2, T1, M1, M2, T2, k1 and k2 are sent to the terminal by the base station through a downlink channel, or adopt default configuration set by a protocol;

example 2

When selecting the OFDM symbol length T_OFDMThe DUGI length is N1 × T at the minimum quantization granularity of the Down-to-Up transition Interval DUGI and the Up-to-Down transition Interval UDGI_OFDM+ T1, UDGI LengthIs M1T_OFDM+T2；

Wherein, the values of T1-k 1-Ts and T2-k 2-Ts are both smaller than the length T of the OFDM symbol_OFDM；

N1, M1, k1 and k2 are sent to the terminal by the base station through a downlink channel, or default configuration set by a protocol is adopted;

(1) when the frame length is a fixed value T_FrameAnd only 1 DUGI and 1 UDGI in 1 frame, with T_RemainRepresents the length of the remaining resources in 1 frame except for integer multiples of OFDM symbols in the time domain:

wherein,indicating a rounding down.

When the length of T1 is equal to T_RemainWhen k1 is L, T2 is 0, i.e., k2 is 0;

when the length of T2 is equal to T_RemainWhen k2 is L, T1 is 0, i.e., k1 is 0;

when the length of T1+ T2 is equal to T_RemainIf so, k1+ k2 ═ L;

(2) when the frame length is a fixed value T_FrameAnd N is within 1 frame_DUGI(N_DUGIA positive integer greater than 1) DUGI and N_UDGI(N_UDGIA positive integer greater than 1) UDGIs,indicating the length of the remaining resources in the 1 frame except for integer multiples of OFDM symbols in the time domain.

When the length of T1 is equal to T_Remain/N_DUGIWhen k1 is equal to L/N_DUGIMeanwhile, T2 is 0, i.e., k2 is 0;

when the length of T2 is equal to T_Remain/N_UDGIWhen k2 is equal to L/N_UDGIMeanwhile, T1 is 0, i.e., k1 is 0;

when said N is_DUGI*T1+N_UDGILength of T2 equal to T_RemainWhen it is, then N_DUGI*k1+N_UDGI*k2＝L。

Example 3

By adopting OFDM technology, the bandwidth is 20MHz, the frame length is T_FrameIn a communication system with a sampling frequency of 30.72MHz of 5ms, the subcarrier interval is 120KHz, and the time-domain sampling interval is Ts 1/30.72MHz of 32.55 ns.

The communication system generates and transmits a time domain OFDM symbol using an inverse fast fourier transform IFFT operation of 30.72 × 1000/120 ═ 256 points.

The cyclic prefix CP of the OFDM symbol comprises 24 sampling points, the length of the sampling points is about 0.781us, and the length T of the whole OFDM symbol_OFDMApproximately 9.115 us.

The length T of resources in the time domain, which are included in the frame 1 except for the OFDM symbols containing integer multiples, is calculated according to the following formula_Remain；

When T is_OFDMDUGI Length N1 × T at minimum quantization granularity of DUGI and UDGI_OFDM+ T1 UDGI Length M1 × T_OFDM+ T2, where N1 and M1 are positive integers equal to or greater than zero;

when there are only 1 DUGI and 1 UDGI in 1 frame, T1 ═ T_Remain，T2＝0；

Preferably, N1 ═ 2, M1 ═ 2, i.e. DUGI ═ 23.21us, UDGI ═ 18.23 us;

preferably, N1 ═ 3, M1 ═ 2, i.e. DUGI ═ 32.325us, UDGI ═ 18.23 us;

when only K (K is a positive integer greater than 1) DUGIs and K UDGIs are present in 1 frame, K T1 is T_RemainT2 ═ 0, where N1 and M1 are positive integers greater than or equal to zero, then the DUGI length is N1 × T_OFDM+T_RemainK UDGI Length M1 × T_OFDM+T2/T_remain；

Preferably, N1 ═ 2, M1 ═ 2;

preferably, N1 ═ 3, M1 ═ 2;

example 4

The communication system generates a time domain OFDM symbol using 30.72 × 1000/120 ═ 256 point IFFT operation and transmits the symbol.

The CP of the OFDM symbol comprises 24 sampling points, the length is about 0.781us, and the length T of the whole OFDM symbol_OFDMApproximately 9.115 us.

when there are only 1 DUGI and 1 UDGI in 1 frame, T1 ═ 0, T2 ═ T_Remain；

Preferably, N1 ═ 3, M1 ═ 2, i.e. DUGI ═ 27.345us, UDGI ═ 23.21 us;

preferably, N1 ═ 2, M1 ═ 1, i.e. DUGI ═ 18.23us, UDGI ═ 14.095 us;

preferably, N1 ═ 3, M1 ═ 1, i.e., DUGI ═ 27.345us, UDGI ═ 14.095 us;

Preferably, N1 ═ 2, M1 ═ 2;

preferably, N1 ═ 3, M1 ═ 2;

example 5

when there are only 1 DUGI and 1 UDGI in 1 frame, T1+ T2 ═ T_RemainFlexibly configuring the values of T1 and T2 according to the processing capacity of the terminal and the base station;

when only K (K is a positive integer greater than 1) DUGIs and K UDGIs are present in 1 frame, K (T1+ T2) is T_RemainAnd the values of T1 and T2 are flexibly configured according to the processing capacity of the terminal and the base station.

Example 6

By adopting OFDM technology, the bandwidth is 20MHz, the frame length is T_FrameIn a communication system with 10ms and 30.72MHz sampling frequency, the subcarrier interval is 120KHz, and the time domain sampling interval is Ts 1/30.72MHz＝32.55ns。

when there are only 1 DUGI and 1 UDGI in 1 frame, T1 ═ T_Remain，T2＝0；

Preferably, N1 ═ 2, M1 ═ 2, i.e. DUGI ═ 19.075us, UDGI ═ 18.23 us;

preferably, N1 ═ 3, M1 ═ 2, i.e. DUGI ═ 28.19us, UDGI ═ 18.23 us;

when only K (K is a positive integer greater than 1) DUGIs and K UDGIs are present in 1 frame, K T1 is T_RemainT2 is 0, where N1 and M1 are positive integers greater than or equal to zero, the DUGI length is N1 TOFDM + T_RemainK UDGI Length M1 × T_OFDM+T2/T_Remain；

Preferably, N1 ═ 2, M1 ═ 2;

preferably, N1 ═ 3, M1 ═ 2;

example 7

By adopting OFDM technology, the bandwidth is 20MHz, the frame length is T_FrameIn a communication system with a sampling frequency of 30.72MHz at 10ms, the subcarrier interval is 120KHz, and the time-domain sampling interval is Ts 1/30.72MHz at 32.55 ns.

when there are only 1 DUGI and 1 UDGI in 1 frame, T1 ═ 0, T2 ═ T_Remain；

Preferably, N1 ═ 3, M1 ═ 2, i.e. DUGI ═ 27.345us, UDGI ═ 19.075 us;

preferably, N1 ═ 2, M1 ═ 1, i.e. DUGI ═ 18.23us, UDGI ═ 9.96 us;

preferably, N1 ═ 3, M1 ═ 1, i.e., DUGI ═ 27.345us, UDGI ═ 9.96 us;

Preferably, N1 ═ 2, M1 ═ 2;

preferably, N1 ═ 3, M1 ═ 2;

example 8

Example 9

Based on the above embodiment, the present invention further provides a device for configuring an uplink/downlink conversion interval in a communication system, which is applied to a communication system that adopts an OFDM technique and has a time domain sampling interval of Ts seconds, and the device includes:

and the parameter configuration module is used for configuring the values of N1, N2, k1, M1, M2 and k2, and configuring the parameters to the terminal through a downlink channel, or configuring default values of the parameters for a network side or a terminal side.

Further, the DUGI configuration module configures the (N2 × Ts) to be a minimum quantization granularity of a DUGI, N1 being a multiple of the minimum quantization granularity of the DUGI; the UDGI configuration module configures the (M2 × Ts) to be a minimum quantization granularity of UDGI, and M1 to be a multiple of the minimum quantization granularity of UDGI.

Further, the DUGI configuration module configures a minimum quantization granularity of the DUGI to be an OFDM symbol length T_OFDMI.e. configuring said (N2 × Ts) as T_OFDM(ii) a The UDGI configuration module configures the minimum quantization granularity of the UDGI to be the OFDM symbol length T_OFDMI.e. configuring said (M2 × Ts) as T_OFDM。

Further, when the frame length is T_FrameAnd only 1 DUGI and 1 UDGI are configured in 1 frame, with T_RemainRepresents the length of the remaining resources in 1 frame except for integer multiples of OFDM symbols in the time domain:

the DUGI configuration module configures a length of T1 to be T_RemainWhen k1 is L, k2 is 0;

the UDGI configuration module configures the length of T2 as T_RemainWhen k2 is L, k1 is 0;

when the DUGI configuration module and the UDGI configuration module configure the length of T1+ T2 as T_RemainThen k1+ k2 equals L.

Further, when the frame length is T_FrameAnd 1 intra-frame configuration N_DUGIDUGI and N_UDGIFor UDGI, with T_RemainRepresents the length of the remaining resources in 1 frame except for integer multiples of OFDM symbols in the time domain:

the DUGI configuration module configures a length of T1 to be T_Remain/N_DUGIWhen k1 is equal to L/N_DUGI，k2＝0；

The UDGI configuration module configures the length of T2 as T_Remain/N_UDGIWhen k2 is equal to L/N_UDGI，k1＝0；

When the DUGI configuration module and the UDGI configuration module configure N_DUGI*T1+N_UDGILength of T2 is configured as T_RemainWhen it is, then N_DUGI*k1+N_UDGI*k2＝L。

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.

Claims

1. a configuration method of uplink and downlink switching intervals in a communication system, characterized in that the method comprises:

In a communication system using OFDM technology and a time-domain sampling interval of Ts seconds, the length of the conversion interval DUGI from downlink to uplink in the frame is set to N1*(N2*Ts)+T1, and the conversion from uplink to downlink in the frame The interval UDGI length is set to M1*(M2*Ts)+T2;

The N1, N2, T1, M1, M2, and T2 are all configured by the base station to the terminal through the downlink channel, or adopt default configuration values; wherein, N1 is the coefficient of the minimum quantization granularity of the DUGI; M1 is the minimum quantization granularity coefficient of the UDGI; Coefficients of quantization granularity; N2 and M2 are coefficients of time-domain sampling intervals; T1 and T2 are respectively positive integer multiples of the time-domain sampling intervals.

2. The method according to claim 1, wherein the configuration of T1 is T1=k1*Ts, and the configuration of T2 is T2=k2*Ts, wherein k1 and k2 are positive integers, and the base station passes downlink The channel is sent to the terminal, or the default configuration value is used.

3. The method according to claim 2, wherein said (N2*Ts) is the minimum quantization granularity of DUGI; said (M2*Ts) is the minimum quantization granularity of UDGI;

Wherein, N1, N2, M1, and M2 are positive integers.

4. The method according to claim 3, characterized in that, the minimum quantization granularity of the DUGI and the minimum quantization granularity of the UDGI are all configured as OFDM symbol length T _OFDM , that is, the (N2*Ts) and the The above (M2*Ts) are all configured as T _OFDM .

5. The method according to claim 4, characterized in that, when the frame length is T _Frame and only 1 DUGI and 1 UDGI are configured within 1 frame, T _Remain represents the OFDM symbols divided by integer multiples in 1 frame The length of the remaining resources outside the time domain:

in Indicates the operation of rounding down, L is a positive integer greater than zero;

When the length of T1 is configured as T _Remain , then k1=L, and at the same time, T2=0, that is, k2=0;

When the length of T2 is configured as T _Remain , then k2=L, and at the same time, T1=0, that is, k1=0;

When the length of T1+T2 is configured as T _Remain , then k1+k2=L.

6. The method according to claim 4, characterized in that, when the frame length is T _Frame and N _DUGI DUGIs and N _{UDGI UDGIs} are configured within one frame, T _Remain represents the OFDM divided by integer multiples within one frame The length of the remaining resources outside the symbol in the time domain:

in Indicates the operation of rounding down, L is a positive integer greater than zero, N _DUGI and N _UDGI are both positive integers greater than or equal to 1;

When the length of T1 is configured as T _Remain /N _DUGI , then k1=L/N _DUGI , and at the same time, T2=0, that is, k2=0;

When the length of T2 is configured as T _Remain /N _UDGI , then k2=L/N _UDGI , and at the same time, T1=0, that is, k1=0;

When the length of N _DUGI *T1+N _UDGI *T2 is configured as T _Remain , then N _DUGI *k1+N _UDGI *k2=L.

7. A configuration device for uplink and downlink switching intervals in a communication system, applied to a communication system that adopts OFDM technology and a time domain sampling interval of Ts seconds, is characterized in that the device includes:

The DUGI configuration module is used to set the length of the transition interval DUGI from downlink to uplink in the frame to N1*(N2*Ts)+T1, where T1=k1*Ts;

The UDGI configuration module is used to set the conversion interval UDGI length from uplink to downlink in the frame to M1*(M2*Ts)+T2, wherein, T2=k2*Ts;

The parameter configuration module is used to configure the values of parameters N1, N2, k1, M1, M2, and k2, and configure the above parameters to the terminal through the downlink channel, or configure the default values of the above parameters for the network side or the terminal side; wherein, N1 is the coefficient of the minimum quantization granularity of the DUGI; M1 is the coefficient of the minimum quantization granularity of the UDGI; N2, M2, k1, and k2 are coefficients of the sampling interval in the time domain.

8. The device of claim 7, wherein:

The DUGI configuration module configures the (N2*Ts) as the minimum quantization granularity of DUGI;

The UDGI configuration module configures (M2*Ts) as the minimum quantization granularity of UDGI.

9. The device of claim 8, wherein:

The DUGI configuration module configures the minimum quantization granularity of the DUGI as OFDM symbol length T _OFDM , that is, configures (N2*Ts) as T _OFDM ;

The UDGI configuration module configures the minimum quantization granularity of the UDGI as OFDM symbol length T _OFDM , that is, configures (M2*Ts) as T _OFDM .

10. The device according to claim 9, wherein when the frame length is T _Frame and only 1 DUGI and 1 UDGI are configured within 1 frame, T _Remain represents the OFDM symbols divided by integer multiples within 1 frame The length of the remaining resources outside the time domain:

When the DUGI configuration module configures the length of T1 as T _Remain , then k1=L, k2=0;

When the UDGI configuration module configures the length of T2 as T _Remain , then k2=L, k1=0;

When the DUGI configuration module and the UDGI configuration module configure the length of T1+T2 as T _Remain , then k1+k2=L.

11. The device according to claim 9, characterized in that, when the frame length is T _Frame and N _DUGI DUGIs and N _{UDGI UDGIs} are configured within one frame, T _Remain represents the OFDM divided by integer multiples within one frame The length of the remaining resources outside the symbol in the time domain:

When the DUGI configuration module configures the length of T1 as T _Remain /N _DUGI , then k1=L/N _DUGI , k2=0;

When the UDGI configuration module configures the length of T2 as T _Remain /N _UDGI , then k2=L/N _UDGI , k1=0;

When the DUGI configuration module and the UDGI configuration module configure the length of N _DUGI *T1+N _UDGI *T2 as T _Remain , then N _DUGI *k1+N _UDGI *k2=L.