CN106031073B

CN106031073B - Data transmission method, user equipment, transmission equipment and system

Info

Publication number: CN106031073B
Application number: CN201580005952.5A
Authority: CN
Inventors: 郑娟; 官磊; 闫志宇; 布莱恩·克拉松
Original assignee: Shenzhen Auvn Technology Co ltd
Current assignee: SHENZHEN AUVN TECHNOLOGY Co.,Ltd.
Priority date: 2015-01-30
Filing date: 2015-01-30
Publication date: 2020-05-15
Anticipated expiration: 2035-01-30
Also published as: CN106031073A; WO2016119250A1

Abstract

The embodiment of the invention discloses a data transmission method, which comprises the following steps: determining data transmission time of a first cell; and carrying out data transmission with the first cell according to the determined data sending time. Correspondingly, the embodiment of the invention also discloses user equipment, transmission equipment and a system. By adopting the invention, the time information on the license-free frequency spectrum can be determined, the normal data communication between the LTE equipment is ensured, and the invention has the advantages of high use efficiency of frequency spectrum resources and low resource cost.

Description

Data transmission method, user equipment, transmission equipment and system

Technical Field

The present invention relates to the field of wireless communication technologies, and in particular, to a data transmission method, user equipment, transmission equipment, and a system.

Background

Frequency spectrum is the basis for wireless communications. Currently, for spectrum usage, there is a design that devices of a Long Term evolution (Long Term evolution) system and a non-LTE system (for example, wireless fidelity (WiFi) devices) can use unlicensed or unlicensed spectrum together, and in a specific implementation, the LTE system may use the unlicensed spectrum in the form of secondary cell configuration or independently.

However, due to opportunistic use of the unlicensed spectrum, the time of data transmission of the unlicensed spectrum is unknown, and what data transmission method can ensure normal data communication between LTE devices is a problem to be solved urgently.

Disclosure of Invention

The embodiment of the invention provides a data transmission method, user equipment, base station equipment and a system, which can determine time information on an unlicensed frequency spectrum, ensure normal data communication between LTE (Long term evolution) equipment and have the advantages of high use efficiency of frequency spectrum resources and low resource overhead.

A first aspect of an embodiment of the present invention provides a method for data transmission, including:

determining data transmission time of a first cell;

and carrying out data transmission with the first cell according to the determined data sending time.

In a first possible implementation manner of the first aspect, the data for data transmission does not include time information of the first cell.

With reference to the first aspect and the first possible implementation manner of the first aspect, in a second possible implementation manner, the data for data transmission does not include time information of the first cell at a specific time, where the specific time includes any time from M time to N time, the M time represents a data transmission start time of the first cell, and the N time represents a data transmission start time at which the first cell carries the time information of the first cell.

With reference to the first aspect and the first or second possible implementation manner of the first aspect, in a third possible implementation manner, at least one of the processes from data bit generation to transmission by an antenna of the data for data transmission does not include time information of the first cell, and the processes include at least one of: scrambling, modulation mapping, layer mapping, precoding, resource element mapping, OFDM signal generation, varying precoding, SC-FDMA signal generation, antenna port mapping.

With reference to the first aspect and the first or second possible implementation manner of the first aspect, in a fourth possible implementation manner, the initialization value of the scrambling code sequence used by the data for data transmission does not include time information.

With reference to the first aspect and the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner, the determining, by the ue, an initialization value of a scrambling code sequence used by data transmission includes:

if the data for data transmission is data carried by PDSCH, the initialization value of the scrambling code sequence used by the data carried by PDSCH is

The A represents an arbitrary real number independent of the first cell time information, and the n_RNTIRepresents a Radio Network Temporary Identity (RNTI) corresponding to the PDSCH, q represents an arbitrary number related to the number of codewords, and

an identification ID indicating a cell of data transmission;

if the data for data transmission is data carried by PMCH, the initialization value of the scrambling code sequence used by the data carried by PMCH is PMCH

The I represents any real number independent of the first cell time information, the

Representing the corresponding identification ID of the multimedia broadcast multicast service single frequency network MBSFN;

if the data for data transmission is data carried by the PCFICH, the initialization value of the scrambling code sequence used by the data carried by the PCFICH is

B represents an arbitrary real number independent of the first cell time information, the

An identification ID indicating a cell of data transmission;

if the data for data transmission is data carried by PDCCH, the initialization value of the scrambling code sequence used by the data carried by PDCCH is

The C represents an arbitrary real number independent of the first cell time information, the C represents an arbitrary real number independent of the first cell time information

An identification ID indicating a cell of data transmission;

if the data for data transmission is data carried by the EPDCCH, the initialization value of a scrambling code sequence used by the data carried by the EPDCCH is

The D represents any real number independent of the first cell time information, the

An ID representing an EPDCCH, the m representing an EPDCCH set index;

if the data for data transmission is the data borne by the PHICH, the initialization value of the scrambling sequence used by the data borne by the PHICH is

The E represents an arbitrary real number independent of the first cell time information, the

An identification ID indicating a cell of data transmission;

if the data for data transmission is CRS or PRS, the initialization value of the scrambling code sequence generated and used by the CRS or the PRS is

F represents any real number independent of the first cell time information, l represents an OFDM symbol index within a subframe, and N represents an OFDM symbol index within a subframe_CPIs related to the CP type, the CP type comprises a normal CP and an extended CP, the value of (A) is related to the CP type

An identification ID indicating a cell of data transmission;

if the data for data transmission is the MBSFN RS, the initialization value of the scrambling code sequence generated and used by the MBSFN RS is

The G represents any real number independent of the first cell time information, the l represents an OFDM symbol index within one subframe, and the

Representing the corresponding identification ID of the multimedia broadcast multicast service single frequency network;

if the data for data transmission is the UE-specific reference signal, the initialization value of the scrambling code sequence used for the UE-specific reference signal generation is

The H represents an arbitrary real number independent of the first cell time information, the H represents an arbitrary real number independent of the first cell time information

Identification ID of cell representing data transmission, said n_RNTIA Radio Network Temporary Identity (RNTI) corresponding to the PDSCH;

if the data for data transmission is CSI-RS, the initialization value of the scrambling code sequence generated and used by the CSI-RS is

The J represents an arbitrary real number independent of the first cell time information, the

An identification ID representing the channel state information CSI.

With reference to possible implementation manners of the first aspect, in a sixth possible implementation manner, the performing, according to the determined data sending time, data transmission with the first cell includes:

determining time information of the first cell according to a preset rule;

and carrying out data transmission with the first cell according to the time information of the first cell.

With reference to the first aspect and the sixth possible implementation manner of the first aspect, in a seventh possible implementation manner, the determining, according to a preset rule, the time information of the first cell includes:

determining time information corresponding to the data sending time according to the time information of the second cell and the data sending time;

determining time information of the first cell according to the time information corresponding to the data sending time, wherein the second cell and the first cell are deployed on different frequency spectrum resources;

the time information of the second cell comprises at least one of: slot index, subframe index, radio frame index, radio superframe index.

With reference to the first aspect and the seventh possible implementation manner of the first aspect, in an eighth possible implementation manner, the determining, according to the time information of the second cell and the data transmission time, the time information corresponding to the data transmission time includes:

and determining the time information corresponding to the time which is a specified time interval away from the data transmission time on the second cell as the time information corresponding to the data transmission time.

With reference to the first aspect and the eighth possible implementation manner of the first aspect, in a ninth possible implementation manner, the specified time interval includes at least one of: m OFDM symbols, N slots, where M, N is an integer no less than zero.

With reference to the first aspect and the seventh possible implementation manner of the first aspect, in a tenth possible implementation manner, the determining, according to the time information of the second cell and the data transmission time, the time information corresponding to the data transmission time includes:

and determining the time information which is closest to the data sending time on the second cell as the time information corresponding to the data sending time.

With reference to the first aspect and the sixth possible implementation manner of the first aspect, in an eleventh possible implementation manner, the time information of the first cell is within a predefined time information range;

the predefined time information is time information corresponding to each time unit included from the start time of data transmission to the end time of data transmission of the first cell, and the time unit includes at least one of the following: one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the time unit comprises at least one of the following items: slot index, subframe index, radio frame index, radio superframe index.

With reference to the first aspect and the eleventh possible implementation manner of the first aspect, in a twelfth possible implementation manner, the time information corresponding to the time unit starting from the starting time is P, and the time information corresponding to other time units subsequent to the time unit is numbered sequentially from P, where P is an integer not less than zero.

With reference to the first aspect and the twelfth possible implementation manner of the first aspect, in a thirteenth possible implementation manner, P is 0.

With reference to the first aspect and the eleventh possible implementation manner of the first aspect, in a fourteenth possible implementation manner, the time information corresponding to each time unit is the same.

With reference to the first aspect and the sixth possible implementation manner of the first aspect, in a sixteenth possible implementation manner, the determining, according to a preset rule, the time information of the first cell includes:

detecting a signal carrying time information of the first cell, and determining a sequence form of the signal;

determining time information of the first cell according to the sequence form.

With reference to the first aspect and any one of the first to fifteenth possible implementation manners of the first aspect, in a sixteenth possible implementation manner, the time information of the first cell is time information corresponding to a data transmission unit of the first cell, where the data transmission unit includes at least one of: one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the data transmission unit comprises at least one of the following: slot index, subframe index, radio frame index, radio superframe index.

With reference to the first aspect and any one of the first to sixteenth possible implementation manners of the first aspect, in a seventeenth possible implementation manner, the time information of the first cell is used for at least one of: data scrambling code, HARQ time sequence.

With reference to the first aspect and any one of the first to seventeenth possible implementation manners of the first aspect, in an eighteenth possible implementation manner, the first cell is a cell on an unlicensed spectrum.

A second aspect of the embodiments of the present invention provides a method for data transmission, including:

determining the data transmission time of the cell;

and carrying out data transmission with the user equipment according to the determined data sending time.

In a first possible implementation manner of the second aspect, the data for data transmission does not include time information of the local cell.

With reference to the second aspect and the first possible implementation manner of the second aspect, in a second possible implementation manner, the data for data transmission does not include the time information of the local cell at a specific time, where the specific time includes any time from M time to N time, the M time represents a data transmission start time of the local cell, and the N time represents a data transmission start time of the local cell, where the data transmission start time carries the time information of the local cell.

With reference to the second aspect and the first or second possible implementation manner of the second aspect, in a third possible implementation manner, at least one of the processes from data bit generation to transmission by an antenna of the data for data transmission does not include time information of the local cell, where the processes include at least one of: scrambling, modulation mapping, layer mapping, precoding, resource element mapping, OFDM signal generation, varying precoding, SC-FDMA signal generation, antenna port mapping.

With reference to the second aspect and the first or second possible implementation manner of the second aspect, in a fourth possible implementation manner, the initialization value of the scrambling code sequence used by the data for data transmission does not include time information.

With reference to the second aspect and the fourth possible implementation manner of the second aspect, in a fifth possible implementation manner, the determining, by the ue, an initialization value of a scrambling code sequence used by data for data transmission includes:

an identification ID indicating a cell of data transmission;

if the data transmission is performedIf the data is data carried by the PCFICH, the initialization value of the scrambling code sequence used by the data carried by the PCFICH is

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An ID representing an EPDCCH, the m representing an EPDCCH set index;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An identification ID representing the channel state information CSI.

With reference to the possible implementation manner of the second aspect, in a sixth possible implementation manner, the performing, according to the determined data sending time, data transmission with the user equipment includes:

determining the time information of the cell according to a preset rule;

and carrying out data transmission with the user equipment according to the time information of the local cell.

With reference to the second aspect and the sixth possible implementation manner of the second aspect, in a seventh possible implementation manner, the determining, according to a preset rule, the time information of the cell includes:

determining the time information of the cell according to the time information corresponding to the data sending time, wherein the second cell and the cell are deployed on different frequency spectrum resources;

With reference to the second aspect and the seventh possible implementation manner of the second aspect, in an eighth possible implementation manner, the determining, according to the time information of the second cell and the data transmission time, the time information corresponding to the data transmission time includes:

With reference to the second aspect and the eighth possible implementation manner of the second aspect, in a ninth possible implementation manner, the specified time interval includes at least one of: m OFDM symbols, N slots, where M, N is an integer no less than zero.

With reference to the second aspect and the seventh possible implementation manner of the second aspect, in a tenth possible implementation manner, the determining, according to the time information of the second cell and the data transmission time, time information corresponding to the data transmission time includes:

With reference to the second aspect and the sixth possible implementation manner of the second aspect, in an eleventh possible implementation manner, the time information of the local cell is located within a predefined time information range;

the predefined time information is time information corresponding to each time unit included from the beginning of data transmission to the end of data transmission in the cell, and the time unit includes at least one of the following items: one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the time unit comprises at least one of the following items: slot index, subframe index, radio frame index, radio superframe index.

With reference to the second aspect and the eleventh possible implementation manner of the second aspect, in a twelfth possible implementation manner, the time information corresponding to the time unit starting from the starting time is P, and the time information corresponding to other time units after the time unit is numbered in sequence from P, where P is an integer not less than zero.

With reference to the second aspect and the twelfth possible implementation manner of the second aspect, in a thirteenth possible implementation manner, P is 0.

With reference to the second aspect and the eleventh possible implementation manner of the second aspect, in a fourteenth possible implementation manner, the time information corresponding to each time unit is the same.

With reference to the second aspect and the sixth possible implementation manner of the second aspect, in a sixteenth possible implementation manner, the determining, according to a preset rule, the time information of the cell includes:

detecting a signal carrying time information of a local cell and determining a sequence form of the signal;

and determining the time information of the cell according to the sequence form.

With reference to the second aspect and any one of the first to fifteenth possible implementation manners of the second aspect, in a sixteenth possible implementation manner, the time information of the local cell is time information corresponding to a data transmission unit of the local cell, where the data transmission unit includes at least one of: one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the data transmission unit comprises at least one of the following: slot index, subframe index, radio frame index, radio superframe index.

With reference to the second aspect and any one of the first to sixteenth possible implementation manners of the second aspect, in a seventeenth possible implementation manner, the time information of the local cell is used for at least one of: data scrambling code, HARQ time sequence.

With reference to the second aspect and any one of the first to the seventeenth possible implementation manners of the second aspect, in an eighteenth possible implementation manner, the local cell is a cell on an unlicensed spectrum.

A third aspect of an embodiment of the present invention provides a user equipment, including:

the time determining module is used for determining the data sending time of the first cell;

and the data transmission module is used for carrying out data transmission with the first cell according to the determined data sending time.

In a first possible implementation manner of the third aspect, the data for data transmission does not include time information of the first cell.

With reference to the third aspect and the first possible implementation manner of the third aspect, in a second possible implementation manner, the data for data transmission does not include time information of the first cell at a specific time, where the specific time includes any time from M time to N time, the M time represents a data transmission start time of the first cell, and the N time represents a data transmission start time at which the first cell carries the time information of the first cell.

With reference to the third aspect and the first or second possible implementation manner of the third aspect, in a third possible implementation manner, at least one of the processes from data bit generation to transmission by an antenna of the data for data transmission does not include time information of the first cell, and the processes include at least one of: scrambling, modulation mapping, layer mapping, precoding, resource element mapping, OFDM signal generation, varying precoding, SC-FDMA signal generation, antenna port mapping.

With reference to the third aspect and the first or second possible implementation manner of the third aspect, in a fourth possible implementation manner, the initialization value of the scrambling code sequence used by the data for data transmission does not include time information.

With reference to the third aspect and the fourth possible implementation manner of the third aspect, in a fifth possible implementation manner, the determining, by the ue, an initialization value of a scrambling code sequence used for data transmission includes:

an identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

The D represents the first cellAny real number independent of time information, said

An ID representing an EPDCCH, the m representing an EPDCCH set index;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

Identification of multimedia broadcast multicast service single frequency network representation correspondenceID；

An identification ID representing the channel state information CSI.

With reference to the possible implementation manners of the third aspect, in a sixth possible implementation manner, the data transmission module includes:

an information determining unit, configured to determine time information of the first cell according to a preset rule;

and the data transmission unit is used for carrying out data transmission with the first cell according to the time information of the first cell.

With reference to the third aspect and the sixth possible implementation manner of the third aspect, in a seventh possible implementation manner, the information determining unit includes:

the first subunit is used for determining time information corresponding to the data sending time according to the time information of the second cell and the data sending time;

a second subunit, configured to determine, according to time information corresponding to the data sending time, time information of the first cell, where the second cell and the first cell are deployed on different spectrum resources;

With reference to the third aspect and the seventh possible implementation manner of the third aspect, in an eighth possible implementation manner, the first subunit is specifically configured to determine, as the time information corresponding to the data transmission time, time information corresponding to a time that is a specified time interval away from the data transmission time in the second cell.

With reference to the third aspect and the eighth possible implementation manner of the third aspect, in a ninth possible implementation manner, the specified time interval includes at least one of: m OFDM symbols, N slots, where M, N is an integer no less than zero.

With reference to the third aspect and the seventh possible implementation manner of the third aspect, in a tenth possible implementation manner, the first subunit is specifically configured to determine, as the time information corresponding to the data transmission time, the time information that is closest to the data transmission time in the second cell.

With reference to the third aspect and the sixth possible implementation manner of the third aspect, in an eleventh possible implementation manner, the time information of the first cell is within a predefined time information range;

With reference to the third aspect and the eleventh possible implementation manner of the third aspect, in a twelfth possible implementation manner, the time information corresponding to the time unit starting from the starting time is P, and the time information corresponding to other time units subsequent to the time unit is numbered in sequence from P, where P is an integer not less than zero.

With reference to the third aspect and the twelfth possible implementation manner of the third aspect, in a thirteenth possible implementation manner, P is 0.

With reference to the third aspect and the eleventh possible implementation manner of the third aspect, in a fourteenth possible implementation manner, the time information corresponding to each time unit is the same.

With reference to the third aspect and the sixth possible implementation manner of the third aspect, in a sixteenth possible implementation manner, the information determining unit includes:

a third subunit, configured to detect a signal carrying time information of the first cell, and determine a sequence form of the signal;

a fourth subunit, configured to determine time information of the first cell according to the sequence form.

With reference to the third aspect and any one of the first to fifteenth possible implementation manners of the third aspect, in a sixteenth possible implementation manner, the time information of the first cell is time information corresponding to a data transmission unit of the first cell, where the data transmission unit includes at least one of: one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the data transmission unit comprises at least one of the following: slot index, subframe index, radio frame index, radio superframe index.

With reference to the third aspect and any one of the first to sixteenth possible implementation manners of the third aspect, in a seventeenth possible implementation manner, the time information of the first cell is used for at least one of: data scrambling code, HARQ time sequence.

With reference to the third aspect and any one of the first to seventeenth possible implementation manners of the third aspect, in an eighteenth possible implementation manner, the first cell is a cell on an unlicensed spectrum.

A fourth aspect of the embodiments of the present invention provides a method for data transmission, including:

the time determining module is used for determining the data sending time of the cell;

and the data transmission module is used for carrying out data transmission with the user equipment according to the determined data sending time.

In a first possible implementation manner of the fourth aspect, the data for data transmission does not include time information of the local cell.

With reference to the fourth aspect and the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the data for data transmission does not include the time information of the local cell at a specific time, where the specific time includes any time from M time to N time, the M time represents a data transmission start time of the local cell, and the N time represents a data transmission start time of the local cell, where the data transmission start time carries the time information of the local cell.

With reference to the fourth aspect and the first or second possible implementation manner of the fourth aspect, in a third possible implementation manner, at least one of the processes from data bit generation to transmission by an antenna of the data for data transmission does not include time information of the local cell, where the processes include at least one of: scrambling, modulation mapping, layer mapping, precoding, resource element mapping, OFDM signal generation, varying precoding, SC-FDMA signal generation, antenna port mapping.

With reference to the fourth aspect and the first or second possible implementation manner of the fourth aspect, in a fourth possible implementation manner, the initialization value of the scrambling code sequence used by the data for data transmission does not include time information.

With reference to the fourth aspect and the fourth possible implementation manner of the fourth aspect, in a fifth possible implementation manner, the determining, by the terminal, an initialization value of a scrambling code sequence used by data for data transmission includes:

if the data for data transmission is data carried by PDSCH, the number carried by PDSCHThe initialization value of the scrambling sequence used is

an identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An ID representing an EPDCCH, the m representing an EPDCCH set index;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

if the data for data transmission is MBSFN RS, the MBSFN RS generates an initialization value of the scrambling sequence used of

An identification ID representing the channel state information CSI.

With reference to the possible implementation manners of the fourth aspect, in a sixth possible implementation manner, the data transmission module includes:

the information determining unit is used for determining the time information of the cell according to a preset rule;

and the data transmission unit is used for carrying out data transmission with the user equipment according to the time information of the cell.

With reference to the fourth aspect and the sixth possible implementation manner of the fourth aspect, in a seventh possible implementation manner, the information determining unit includes:

the second subunit is configured to determine time information of the local cell according to the time information corresponding to the data sending time, where the second cell and the local cell are deployed on different spectrum resources;

With reference to the fourth aspect and the seventh possible implementation manner of the fourth aspect, in an eighth possible implementation manner, the first subunit is specifically configured to determine, as the time information corresponding to the data transmission time, time information corresponding to a time that is a specified time interval away from the data transmission time in the second cell.

With reference to the fourth aspect and the eighth possible implementation manner of the fourth aspect, in a ninth possible implementation manner, the specified time interval includes at least one of the following: m OFDM symbols, N slots, where M, N is an integer no less than zero.

With reference to the fourth aspect and the seventh possible implementation manner of the fourth aspect, in a tenth possible implementation manner, the first subunit is specifically configured to determine, as the time information corresponding to the data sending time, the time information that is closest to the data sending time in the second cell.

With reference to the fourth aspect and the sixth possible implementation manner of the fourth aspect, in an eleventh possible implementation manner, the time information of the local cell is located within a predefined time information range;

With reference to the fourth aspect and the eleventh possible implementation manner of the fourth aspect, in a twelfth possible implementation manner, the time information corresponding to the time unit starting from the starting time is P, and the time information corresponding to other time units after the time unit is numbered in sequence from P, where P is an integer not less than zero.

With reference to the fourth aspect and the twelfth possible implementation manner of the fourth aspect, in a thirteenth possible implementation manner, P is 0.

With reference to the fourth aspect and the eleventh possible implementation manner of the fourth aspect, in a fourteenth possible implementation manner, the time information corresponding to each time unit is the same.

With reference to the fourth aspect and the sixth possible implementation manner of the fourth aspect, in a sixteenth possible implementation manner, the information determining unit includes:

a third subunit, configured to detect a signal carrying time information of the local cell, and determine a sequence form of the signal;

and the fourth subunit is used for determining the time information of the cell according to the sequence form.

With reference to the fourth aspect and any one of the first to fifteenth possible implementation manners of the fourth aspect, in a sixteenth possible implementation manner, the time information of the local cell is time information corresponding to a data transmission unit of the local cell, where the data transmission unit includes at least one of: one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the data transmission unit comprises at least one of the following: slot index, subframe index, radio frame index, radio superframe index.

With reference to the fourth aspect and any one of the first to sixteenth possible implementation manners of the fourth aspect, in a seventeenth possible implementation manner, the time information of the local cell is used for at least one of: data scrambling code, HARQ time sequence.

With reference to the fourth aspect and any one of the first to the seventeenth possible implementation manners of the fourth aspect, in an eighteenth possible implementation manner, the local cell is a cell on an unlicensed spectrum.

A fifth aspect of the embodiments of the present invention provides a system for data transmission, including the user equipment provided in the first aspect and the transmission equipment provided in the second aspect.

A sixth aspect of the present embodiments provides a computer storage medium, which stores a program, and when the program is executed, the program includes some or all of the steps of the data transmission method provided in the first aspect.

A seventh aspect of the embodiments of the present invention provides a computer storage medium, where the computer storage medium stores a program, and the program includes some or all of the steps of the data transmission method provided in the second aspect when executed.

An eighth aspect of the embodiments of the present invention provides a user equipment, including an antenna port, a memory, and a processor, where the memory stores a group of programs, and the processor is configured to call the programs stored in the memory, and is configured to perform the following operations:

determining data transmission time of a first cell;

A ninth aspect of the embodiments of the present invention provides a transmission device, where the transmission device corresponds to a cell, and the transmission device includes an antenna port, a memory, and a processor, where the memory stores a set of programs, and the processor is configured to call the programs stored in the memory, and is configured to perform the following operations:

determining the data transmission time of the cell;

As can be seen from the above, the embodiment of the present invention determines the data sending time of the first cell, and then performs data transmission with the first cell according to the determined data sending time, for example, performs data transmission with the first cell through the unlicensed spectrum according to the data sending time of the first cell in the licensed spectrum, so as to determine the time information on the unlicensed spectrum, ensure normal data communication between LTE devices, and have the advantages of high usage efficiency of spectrum resources and low resource overhead.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic flow chart of a method for data transmission according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of another data transmission method according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a method for determining time information according to an embodiment of the present invention;

fig. 4 is a flowchart illustrating another method for determining time information according to an embodiment of the present invention;

fig. 5 is a flowchart illustrating a further method for determining time information according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating a further method for data transmission according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a user equipment according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a data transmission module according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of an information determination unit according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of another information determination unit provided in the embodiment of the present invention;

fig. 11 is a schematic structural diagram of a transmission device according to an embodiment of the present invention;

fig. 12 is a schematic structural diagram of a data transmission module according to an embodiment of the present invention;

fig. 13 is a schematic structural diagram of another information determination unit according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of another information determination unit according to an embodiment of the present invention;

fig. 15 is a schematic structural diagram of a system for data transmission according to an embodiment of the present invention;

fig. 16 is a schematic structural diagram of another user equipment provided in an embodiment of the present invention;

fig. 17 is a schematic structural diagram of another transmission device provided in the embodiment of the present invention;

fig. 18 is a schematic diagram of time information of an unlicensed spectrum according to an embodiment of the present invention;

fig. 19 is a diagram illustrating time information alignment of a spectrum according to an embodiment of the present invention;

fig. 20 is a diagram illustrating time information of another unlicensed spectrum according to an embodiment of the present invention;

fig. 21 is a schematic diagram illustrating a timing relationship between unlicensed spectrum data transmission and feedback ACK/NACK according to an embodiment of the present invention;

fig. 22 is a schematic diagram illustrating a timing relationship between unlicensed spectrum data transmission and feedback ACK/NACK according to another embodiment of the present invention;

fig. 23 is a schematic diagram illustrating a timing relationship between sending of unlicensed spectrum data and feeding back ACK/NACK according to another embodiment of the present invention;

FIG. 24 is a block diagram of a subframe index sequence numbering according to an embodiment of the present invention;

fig. 25 is a schematic diagram of another subframe index sequence numbering according to an embodiment of the present invention.

Detailed Description

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

To facilitate an understanding of the embodiments of the present invention, before describing the embodiments, the following description is provided:

first, a related art related to an embodiment of the present invention:

frequency spectrum is the basis for wireless communications. According to the latest released international white spectrum cover by the Federal Communications Commission (FCC), unlicensed or unlicensed (licenced) spectrum resources are larger than licensed or licensed (licensed) spectrum resources. Currently, the main technology used in the unlicensed spectrum is Wireless Fidelity (WiFi), but WiFi has defects in mobility, security, Quality of Service (QoS), and handling multi-user scheduling at the same time, so that Long-term Evolution (LTE) devices are applied to the unlicensed spectrum, which not only can effectively utilize unlicensed spectrum resources, but also can provide more effective Wireless access and meet the increasing demand of mobile broadband services. Therefore, in future mobile communication scenarios, LTE devices and WiFi devices may exist simultaneously on the unlicensed spectrum.

In order to enable the LTE device to maintain advantages in mobility, security, quality of service, and handling multi-user scheduling simultaneously, compared to WiFi, even if the LTE device operates on the unlicensed spectrum, one method is to aggregate the licensed spectrum and the unlicensed spectrum together by means of Carrier Aggregation (CA), that is, the LTE device may use the licensed spectrum as a Primary Component Carrier (PCC) or a Primary Cell (PCell) and use the unlicensed spectrum as a Secondary Component Carrier (SCC) or a Secondary Cell (SCell) by means of CA, in this way the LTE device can both inherit the traditional advantages of LTE devices for wireless communication over licensed spectrum, such as advantages in mobility, security, quality of service, and handling of multi-user scheduling at the same time, and may utilize spectrum resources of unlicensed spectrum.

Since there is no restriction on the usage of the wireless communication system and the operator on the unlicensed spectrum, that is, there is a case where multiple operators of multiple communication systems want to occupy the same spectrum, in order to achieve fairness of usage of the spectrum by different wireless communication systems on the unlicensed spectrum, in some regions, a wireless communication device needs to follow a specific regulatory rule when used on the unlicensed spectrum, for example, rules such as Listen Before Talk (LBT), channel bandwidth occupation demand, and the like are specified in ETSI 301893 issued by European Telecommunications Standards Institute (ETSI) for unlicensed spectrum usage. According to the provisions of ETSI EN 301893, a wireless communication device needs to use the LBT rule when occupying an unlicensed spectrum for communication, i.e., the device first listens to whether a channel is free or available before using the channel, and if so, can use the channel on the unlicensed spectrum, but the time to occupy the channel is limited. After the time for occupying the channel reaches the maximum limit, the unlicensed spectrum must be released for a period of time, that is, data transmission on the unlicensed spectrum is stopped for a period of time; the unlicensed spectrum resources must be listened to again for availability before the next time the unlicensed spectrum resources are to be occupied. The device may perform Clear Channel Assessment (CCA) through energy detection to determine whether the unlicensed spectrum resource is free or available. According to the current regulations of ETSI EN 301893, when a wireless communication device is used in an unlicensed spectrum, it is necessary to meet the listen-before-talk mechanism requirements of Frame-based devices (FBEs) or Load-based devices (LBEs).

Therefore, if an LTE device wants to use the unlicensed spectrum for data communication, in some regions, such as europe, the LBT rule needs to be followed, that is, the LTE device needs to perform CCA before using the unlicensed spectrum, and then data transmission can be performed after determining that the unlicensed spectrum resource is available. On the other hand, in order to have more opportunities for preemption of the unlicensed spectrum resources, the LTE device may initiate listening at any time, which is also allowed by the regulatory rules, that is, on the unlicensed spectrum, the time when the LTE device determines that the unlicensed spectrum resources are available is also any time, and particularly, the LTE device may transmit data after determining that the unlicensed spectrum resources are available (determining whether the unlicensed spectrum resources are available under the condition that regulatory constraints are met) by using the LBT mechanism of LBE, so that the time when the LTE device transmits data on the unlicensed spectrum is also any time. In the embodiment of the invention, the LTE equipment judges that the license-free frequency spectrum resource is available, and can judge that the license-free frequency spectrum resource is available through an energy detection mode if the received energy is less than a certain threshold through energy detection in a specified time range; on the other hand, the LTE device determines that the unlicensed spectrum resource is available, and may also determine, by means of signal analysis, whether a signal indicating that the unlicensed spectrum resource is occupied is detected, or a Network Allocation Vector (NAV) is detected, for example. Here, the NAV indicates a time when a device occupying the unlicensed spectrum occupies the unlicensed spectrum, and once another device detects the NAV, if the other device is not a target serving device that transmits a NAV device, the other device cannot transmit data on the unlicensed spectrum occupied by the device transmitting the NAV within a time range indicated by the NAV. In addition, the LTE device may also determine whether a channel on the unlicensed spectrum is available in an energy detection and signal analysis manner.

This presents a problem: for the LTE system, in order to achieve normal data communication between a base station device and a User Equipment (UE), the UE needs to know a radio frame index, a subframe index, a slot index, a symbol index, and the like of data transmission between the base station device and the UE. Currently, for an LTE system, a UE may determine a subframe index, a symbol index, and a slot index by receiving a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS) sent by a base station device, and determine a radio frame index by receiving a Physical Broadcast Channel (PBCH) sent by the base station device, and the UE acquires the indices, which may assist the UE to implement normal data communication with the base station device. For example, the UE may be assisted to recover the reference signal so that the UE performs data demodulation, Channel estimation, Channel State Information (CSI) measurement, Radio Resource Management (RRM) measurement, and the like, and the recovering the reference signal may include recovering the reference signal sequence, and may further include obtaining a time position and a frequency domain position of reference signal transmission, where the time position may be determined in units of subframes, and the frequency domain position refers to a frequency domain Resource position occupied by the reference signal in a frequency domain, and may be represented by a position or an index of a Resource Element (RE), for example. Here, the Reference Signal may include a Reference Signal supported in the existing LTE system, such as a Cell-specific Reference Signal (CRS), a UE-specific Reference Signal (UE-specific Reference Signal) for data demodulation of a Physical Downlink Shared Channel (PDSCH), a demodulation Reference Signal (DM-RS) for enhancing demodulation of a Physical downlink control Channel (EPDCCH), a Positioning Reference Signal (PRS), a Channel state information Reference Signal (CSI-RS), a Discovery Reference Signal (DRS), and the like; the UE obtains various indexes, which may facilitate the UE to determine a Hybrid automatic repeat request (HARQ) timing sequence and determine a time position of periodically transmitted data, where the periodically transmitted data may include information carried by a periodically transmitted Physical Uplink Control Channel (PUCCH), a Sounding Reference Signal (SRS), and the like; the UE obtains various indexes, and may also be convenient for the UE to receive data sent by the base station device, for example, data carried by a PDSCH, data carried by a Physical Multicast Channel (PMCH), data carried by a Physical Control Format Indicator Channel (PCFICH), data carried by a Physical Downlink Control Channel (PDCCH), data carried by an EPDCCH, and data carried by a Physical Hybrid automatic repeat request Indicator Channel (PHICH); the UE obtains various indexes, and may further facilitate the UE to send uplink data, so that the base station device may receive, for example, data carried by a Physical Uplink Shared Channel (PUSCH), data carried by a Physical Uplink Control Channel (PUCCH), and data carried by a Physical Random Access Channel (PRACH). For the LTE system, signals PSS/SSS/PBCH that enable the UE to know the timing information of data transmission between the base station device and the UE are transmitted periodically, but for the unlicensed spectrum, since whether data can be transmitted is determined based on whether unlicensed spectrum resources are available, that is, the use of the unlicensed spectrum is opportunistic, the transmission of periodic signals, particularly the transmission of PSS/SSS/PBCH, in the LTE system cannot be guaranteed. Therefore, how to determine the time information of data transmission between the base station device and the UE on the premise that the LTE device randomly sends data after preempting the unlicensed spectrum is a technical problem to be solved by the embodiment of the present invention, so as to ensure normal data communication between the base station device and the UE.

Secondly, the system architecture or scenario applied in the embodiment of the present invention:

the embodiment of the invention is applied to various wireless communication systems, in particular to an LTE system of Licensed-Assisted Access (LAA), namely an LAA-LTE system. The LTE system using licensed spectrum assisted access refers to an LTE system in which a licensed spectrum and an unlicensed spectrum are used together by means of CA or non-CA. It should be understood that the embodiment of the present invention is not limited to the above CA scenario, and other deployment scenarios also include a scenario where there is no ideal backhaul path between two serving cells (a primary serving cell and a secondary serving cell), for example, backhaul delay is large, so that information cannot be quickly coordinated between the two serving cells. In addition, it is also considered that the serving cells operating on the unlicensed spectrum are deployed independently, that is, the serving cells operating on the unlicensed spectrum can directly provide an independent access function without assistance from the cells operating on the licensed spectrum.

The device in the LTE system in the embodiment of the present invention, that is, the LTE device, includes a user equipment and a transmission device. A User Equipment (UE) may be referred to as a Terminal (Terminal), a Mobile Station (MS), a Mobile Terminal (Mobile Terminal), or the like, and the User Equipment may communicate with one or more core networks through a Radio Access Network (RAN), for example, the User Equipment may be a Mobile phone (or a "cellular" phone) or a computer with a Mobile Terminal, and for example, the User Equipment may also be a portable, pocket, handheld, computer-embedded or vehicle-mounted Mobile device that exchanges voice and/or data with the RAN, and for example, the User Equipment may also be a Relay (Relay), and a device that may communicate data with a base Station device. The base station device may be a base station (NodeB, abbreviated to "NB") in WCDMA, and particularly an evolved Node B (eNB) in LTE. In addition, the transmission device corresponds to a cell, and the cell may belong to a macro base station, and may also belong to a base station device of a small cell (small cell), where the small cell may include: urban cells (Metro cells), micro cells (microcells), Pico cells (Pico cells), Femto cells (Femto cells), and the like, and the small cells have the characteristics of small coverage area and low transmission power, and are suitable for providing high-rate data transmission services. It should be understood that the carrier and cell concepts in the LTE system are equivalent, for example, a UE accesses one carrier and accesses one cell, and the embodiments of the present invention will be described by referring to the cell concepts in a unified way.

Fig. 1 is a flowchart illustrating a method for data transmission according to an embodiment of the present invention, where the embodiment of the method is implemented in a user equipment. As shown in the figure, the flow of the method for data transmission in this embodiment may include:

s101, determining the data transmission time of the first cell.

In an embodiment of the present invention, the first cell may be defined as a cell on an unlicensed spectrum. Specifically, the user equipment determines a data transmission time of the first cell, and it should be noted that the data transmission time of the first cell is not limited to a data transmission start time of the first cell, and may also be a time when the user equipment is scheduled by data, and further, if the first cell is a cell on the unlicensed spectrum, in this embodiment of the present invention, the data transmission time of the first cell may be any time included in the unlicensed spectrum data transmission end time of the first cell from a time when the first cell preempts the unlicensed spectrum resources to a time when the first cell ends the unlicensed spectrum data transmission.

In a specific implementation process, after the first cell seizes the spectrum resource of the unlicensed spectrum, the user equipment may determine the data sending time of the first cell in a blind detection manner or a manner of buffering before detection, and further may determine the starting time of sending data by the first cell through the unlicensed spectrum. Alternatively, the ue may determine the data transmission time of the first cell through other auxiliary information. Optionally, the specific detection method includes energy detection and/or signal detection.

Taking signal detection as an example, for example: after a first cell working on an unlicensed spectrum seizes spectrum resources of the unlicensed spectrum, a signal capable of assisting a user equipment to determine that the unlicensed spectrum is seized is sent, and the signal can carry a sequence with good autocorrelation characteristics (such as a zaadeoff-chu (zc) sequence, where the sequence with good autocorrelation characteristics means that a ratio of an autocorrelation operation result of the sequence to a cross-correlation operation result is greater than a certain threshold), so that the user equipment can perform correlation operation on the signal on the unlicensed spectrum by using a local sequence, and judge whether the unlicensed spectrum resources are occupied through the correlation operation result. That is, if the correlation operation result between the local sequence of the user equipment and the signal on the unlicensed spectrum is greater than a certain threshold, or the user equipment performs correlation operation using the local sequence and the signal on the unlicensed spectrum, if it is determined that the local sequence used by the user equipment is transmitted on the unlicensed spectrum, the user equipment may consider that the first cell occupies the spectrum resource of the unlicensed spectrum, and may determine the data transmission time of the first cell on the unlicensed spectrum according to the detection position corresponding to the correlation operation result greater than the certain threshold (the detection position corresponding to the correlation operation result greater than the certain threshold means that the correlation operation result between the local sequence and the signal on the unlicensed spectrum is greater than the certain threshold at the detection position). It should be noted that although the above method is described by taking signal detection as an example, the method is also applicable to energy detection.

Optionally, the user equipment may also determine the data transmission time of the first cell by detecting other signals and/or channels. For example, a channel format may be predefined, such as a predefined PDCCH format, or Information carried by the predefined PDCCH, that is, Downlink Control Information (DCI), by detecting the PDCCH, if a PDCCH format matching the predefined PDCCH or DCI matching the predefined PDCCH is detected, the ue may consider that the first cell camps on the unlicensed spectrum resource, and the ue may further use a time or a time position corresponding to the detected PDCCH format matching the predefined PDCCH format (or detected DCI matching the predefined PDCCH) as a data transmission time of the first cell. Or if the energy detection result of the DCI format exceeds a certain threshold, it may also be considered that the first cell camps on the unlicensed spectrum, and a time or a time position corresponding to the energy detection result exceeding the certain threshold may be used as a data transmission time of the first cell. It should be noted that, here, the predefined PDCCH format may include DCI of a specific format, for example, DCI format 0, DCI format 1A, DCI format 1B, DCI format 1C, DCI format 1D, DCI format 2, DCI format 2A, DCI format 2B, DCI format 2C, DCI format 2D, DCI format 3, DCI format 3A, DCI format 4, or DCI that information contained in the DCI is predefined or DCI carried on a specific time-frequency resource (i.e. a time-frequency resource position for transmitting the DCI is predefined in advance); the DCI of the specific format may be a cell-common DCI, a UE-specific DCI, or a group of UE-group-specific DCIs. Obviously, in this case, the UE needs to know the predefined PDCCH format, or DCI format, first to detect the first signal.

Optionally, the user equipment may further determine, by blind detecting the PDCCH, whether the first cell has data scheduled to itself in the unlicensed spectrum, and if it is determined by blind detecting that the first cell has data scheduled to itself in the unlicensed spectrum, the user equipment may use a time or a time position corresponding to the detected data scheduling information as a data transmission time of the first cell, where the PDCCH may be transmitted in the unlicensed spectrum or may be transmitted in the licensed spectrum. Further optionally, the ue may also determine whether the first cell has data scheduled to itself in the unlicensed spectrum by blindly detecting other control channels.

Optionally, the ue may also buffer data on the unlicensed spectrum for a certain time, where the certain time may include an integer number of Orthogonal Frequency Division Multiplexing (OFDM) symbols, an integer number of slots, an integer number of subframes, and an integer number of inverse Ts of a down-sampling rate of the LTE system, where Ts may satisfy the following formula: 15360 Ts 0.5 ms. The data transmission moment of the first cell is then determined based on other secondary indication information, e.g., control channel indication information from the unlicensed spectrum and/or the licensed spectrum, where the control channel may be a PDCCH.

Optionally, if the user equipment may determine the data transmission duration of the first cell in the unlicensed spectrum and may determine the data transmission start time of the first cell, the user equipment may determine the data transmission end time of the first cell in the unlicensed spectrum, and accordingly, the user equipment may determine all possible data transmission times of the first cell; or after determining that the first cell preempts the unlicensed spectrum resource, or determining that the data transmission time of the first cell is not received, the user equipment may consider that the first cell is all at the data transmission time until the auxiliary information indicates that the first cell ends data transmission, and then may determine the data transmission end time of the first cell.

Optionally, the user equipment may also determine the data transmission time of the first cell by other explicit signaling and/or other blind detection methods.

And S102, performing data transmission with the first cell according to the determined data sending time.

Specifically, the ue receives data sent by the first cell and/or sends data to the first cell according to the determined data sending time.

Optionally, the data for data transmission does not include the time information of the first cell. The time information of the first cell is time information corresponding to a data transmission unit of the first cell, where the data transmission unit includes at least one of: one OFDM (Orthogonal Frequency Division Multiplexing) symbol, one slot, one subframe, one radio frame, one radio superframe. Wherein the time information corresponding to the data transmission unit comprises at least one of the following: OFDM symbol index, slot index, subframe index, radio frame index, radio superframe index.

For example, at least one of the PDSCH, PDCCH, PHICH, PCFICH, EPDCCH, PUSCH, PUCCH, and PRACH mentioned in the foregoing related art does not include time information, and does not include time information here, and may be that, when the information carried by the above-mentioned channel is scrambled, the scrambling sequence may not carry time information, or when the information carried by the above-mentioned channel is subjected to at least one of the following steps, the information carried by the above-mentioned channel does not include time information: coding, modulation, resource mapping, and determining a Cyclic Shift (Cyclic Shift) size. In general, time information is not included, and it may be that any step from generation to transmission by an antenna of any one channel and/or signal included in the LTE system does not include time information, or that any step from generation to baseband processing by an antenna of any one channel and/or signal included in the LTE system does not include time information. Taking PDSCH as an example, the baseband processing steps undergone by PDSCH from generation to transmission by the antenna include, but are not limited to: scrambling, modulating, layer mapping, precoding and resource element mapping; taking PDCCH as an example, the base band processing steps from generation to transmission of PDCCH by the antenna include, but are not limited to: determining a PDCCH format, PDCCH multiplexing and scrambling codes, modulation, layer mapping and precoding, and resource element mapping; taking CRS as an example, the steps from generation to emission of CRS by the antenna include, but are not limited to: sequence generation and resource element mapping.

More generally, for downlink data processing, a physical Layer channel and/or signal processing process includes, for each codeword (codeword), forming a baseband channel and/or signal to be transmitted after Scrambling (Scrambling), modulation mapping (modulating), Layer mapping (Layer mapping), Precoding (Precoding), Resource element mapping (Resource element mapping), OFDM signal generation (OFDM signal generation), and antenna port (antenna port) mapping of included data bits; for uplink data processing, a physical Layer channel and/or signal processing process includes, for each codeword (codeword), forming a baseband channel and/or signal to be transmitted after Scrambling (Scrambling), Modulation mapping (Modulation mapper), Layer mapping (Layer mapper), Transform Precoding (Transform coder), Precoding (Precoding), Resource element mapping (Resource element mapper), Single Carrier-Frequency Division multiple Access (SC-FDMA) signaling, and antenna port (antenna port) mapping of included data bits. Therefore, the data for data transmission does not include the time information of the first cell, and may further include:

at least one of the processes from data bit generation to emission by an antenna of the data for data transmission does not include time information of the first cell, the processes include at least one of: scrambling, modulation mapping, layer mapping, precoding, resource element mapping, OFDM signal generation, varying precoding, SC-FDMA signal generation, antenna port mapping.

The process of the experience may also include other steps, and it is within the scope of the embodiments of the present invention that the steps included in the process from the generation of data bits to the transmission of data by the antenna are included.

Taking PDSCH as an example, the initialization value of the scrambling code sequence is defined as shown in formula (1), where n_RNTIIndicating correspondence with scheduled PDSCH transmissionsRNTI (Radio Network Temporary identity), n_sIndicating the index of the time slot within a radio frame,

indicates the Identity (ID) corresponding to the Cell (Cell) transmitting the PDSCH.

In the embodiment of the present invention, the scrambling sequence may not carry time information, or the initialization of the scrambling sequence may not carry time information, and taking the PDSCH carried data as an example, the data may include an initialization value of the scrambling sequence that may not include a value related to time information, such as n_sAs an alternative embodiment, the initialization sequence is as shown in equation (2).

The initialization value of the scrambling code sequence used by the data for data transmission does not include time information.

Further optionally, the initialization value of the scrambling code sequence used by the data for data transmission may be determined by:

if the data is data carried by PDSCH, the initialization value of the scrambling code sequence used by the data carried by PDSCH is

Wherein a represents any real number unrelated to the time information of the first cell, q represents any numerical value related to the number of codewords, and further, a may be 1;

if the data is the data carried by the PMCH, the initialization value of the scrambling code sequence used by the data carried by the PMCH is

The I represents time information with the first cellIndependent of any real number, in which

Representing an identification ID corresponding to a Multimedia Broadcast multicast service single frequency Network (MBSFN);

if the data is data carried by the PCFICH, the initialization value of a scrambling code sequence used by the data carried by the PCFICH is

Where B represents any real number independent of the first cell time information, further B may be 0;

if the data is the data carried by the PDCCH, the initialization value of the scrambling code sequence used by the data carried by the PDCCH is

Where C represents any real number independent of the first cell time information, further C may be 1;

if the data is the data carried by the EPDCCH, the initialization value of the scrambling code sequence used by the data carried by the EPDCCH is

Where D represents any real number independent of the first cell time information, and further, D may be 1,

an ID indicating an EPDCCH, and m indicates an EPDCCH set number (EPDCCH set number);

if the data is carried by the PHICH, the initialization value of the scrambling sequence used by the data carried by the PHICH is

Where E represents any real number independent of the first cell time information, further E may be 0;

if the data is CRS or positioning reference signal (Posit)An ionizing reference signal, PRS), the scrambling sequence used for CRS or PRS generation is initialized to a value of

Where F represents an arbitrary real number independent of the first cell time information, l represents the OFDM symbol index within one subframe, N_CPThe value of (b) is related to the CP type, which includes normal CP and extended CP. Still further, F may be 0; further, l may take other values independent of the OFDM symbol index. It should be noted that the above formula is only for illustrating the form, and for the CRS and the PRS, although the formula form may be the same, the value of F may be different.

If the data is MBSFN RS, the initialization value of a scrambling code sequence used by the MBSFN RS generation is MBSFN RS

Wherein G represents any real number unrelated to the first cell time information, and other parameter values may refer to the above embodiments. Further, G may be 0. Further, l may take other values independent of the OFDM symbol index.

If the data is the UE specific reference signal, the initialization value of the scrambling code sequence used by the UE specific reference signal generation is

Where H represents any real number unrelated to the first cell time information, and other parameter values may refer to the above embodiments. Still further, H may be 0.

If the data is CSI-RS, the initialization value of the scrambling code sequence generated and used by the CSI-RS is

Where J denotes an arbitrary real number independent of the first cell time information,

indicates the identification ID corresponding to the channel state information CSI,

the value may be equal to

Or other values may be configured by higher layer signaling. Other parameter values can be referred to the above embodiments. Still further, J may be 0.

As another alternative, the initialized sequence may include time information of the first cell, for example, n_sBut n is_sIs predefined, e.g. n for sequence initialization regardless of where the start of data transmission of the unlicensed spectrum is_sMay be 0 or a predefined other value, such as any one of 0-19, other integer values, etc. The above method is also applicable to other data, for example, data carried by PMCH, data carried by PDCCH, data carried by PHICH, data carried by PCFICH, data carried by EPDCCH, data carried by PUSCH, data carried by PUCCH, data carried by PRACH, and the like, and further, in data transmission, other channels and/or signals including time information in at least one step of data coding, modulation, resource mapping, and the like are also included.

It should be understood that the beneficial effects brought by the data transmitted without the time information of the first cell are: besides ensuring normal data transmission between the first cell and the user equipment, the influence of data early package on data transmission under the condition of opportunistic use of the unlicensed spectrum can be solved. Taking the first cell side as an example, the first cell needs to complete the pre-packet of data to be sent before sending data, where the pre-packet of data may be for a single user or for multiple scheduled users. For example, the first cell transmits data in subframe # n, and then the subframe # n corresponds to the transmitted data, which is assembled in a subframe before the subframe # n, for example, subframe # n-1, according to the current LTE protocol specification, the time information of the subframe # n is included in the assembled data of the subframe # n-1, for example, as described above, the scrambling code sequence initialization value corresponding to the scrambling code sequence adopted in the PDSCH is related to the slot index included in the subframe # n. However, for the unlicensed spectrum, if the first cell does not camp on the unlicensed spectrum resource at or before subframe # n, the first cell cannot transmit data in subframe # n of the unlicensed spectrum resource. At this time, one method is to discard the data assembled in the sub-frame # n-1 and also discard the original data corresponding to the assembled data. The original data may be bit information corresponding to the data, and taking the data carried by the PDSCH as an example, the corresponding original data may be bit information before scrambling the codeword. This is because even if the first cell re-seizes the spectrum resource in the subsequent subframe of the subframe # n, for example, the subframe # n +1, the data assembled in the subframe # n-1 cannot be sent again, because the time information included in the data assembled in the subframe # n-1 is the time information corresponding to the subframe # n and is not the time information corresponding to the subframe # n +1, according to the existing data receiving process, if the data including the time information corresponding to the subframe # n is directly sent in the subframe # n +1, the user equipment cannot correctly receive the data, such packet loss operation may affect the user experience, and particularly, considering the opportunistic use of the unlicensed spectrum, the uncertainty of the data transmission time may frequently occur, and therefore, according to this method, packet loss may frequently occur, which seriously affects the user experience; another method is to discard the assembled data in the sub-frame # n-1, but not discard the original data corresponding to the assembled data. When it is determined that the unlicensed spectrum resource is not occupied at the subframe # n or before the subframe # n and it is determined that the data assembled in the subframe # n-1 cannot be transmitted, original data corresponding to the data assembled in the subframe # n-1 may be continuously reassembled in the subframe # n, and the reassembled data may carry time information corresponding to the subframe # n +1 because the transmission is scheduled in the subframe # n + 1. Thus, packet loss of the original data is avoided, but the scheduling complexity of the base station side is increased, which is equivalent to performing multiple packet packing on the same original data; in another embodiment, after determining that the unlicensed spectrum resource is preempted, the device may start to perform data packaging, for example, the device determines that the unlicensed spectrum resource is preempted in subframe # n +1, and the device (which may be a base station or a user equipment, and the base station may be a base station to which the first cell belongs) starts to perform packaging, but as described above, the device performs data packaging in time-consuming, for example, 1 subframe, and thus, by using this method, even if the device determines that the unlicensed spectrum resource is preempted in subframe # n, it also needs to transmit data in subframe # n +1, so that the unlicensed spectrum resource corresponding to subframe # n cannot be effectively used, and considering that there is generally a limitation on the unlicensed spectrum resource on the maximum data transmission time, such a method may reduce the data transmission efficiency of the unlicensed spectrum.

Therefore, on the premise of opportunistic use and early package of the unlicensed spectrum, if packet loss occurs in the data generation process according to the current LTE protocol specification, the packet loss frequently occurs, and user experience is affected; or increase the complexity of scheduling; or to reduce the data transmission efficiency of the unlicensed spectrum. The above description takes downlink data transmission as an example, and the scenario is also applicable to an uplink data transmission process.

That is to say, in the process of data early-packaging, it is necessary to consider a data transmission time corresponding to the data of the early-packaging, but for the unlicensed spectrum resource, due to randomization of the data transmission time, the data of the early-packaging may be discarded because the unlicensed spectrum resource at the corresponding time is not preempted, so as to affect user experience, or increase complexity of device data processing, or reduce data transmission efficiency of the unlicensed spectrum. By adopting the mode of the embodiment, the specific position of the preemption moment is not considered in the process of grouping in advance, or the time information is directly cancelled in the process of grouping, or the predefined value is adopted as the time information to group the data transmission of the unlicensed spectrum, so that the data can be sent to be grouped in advance no matter where the available time (or the preemption moment) of the unlicensed spectrum resource is located in the first cell, thereby ensuring the user experience, facilitating the realization of data processing by equipment, particularly not considering the influence of opportunistic use of the unlicensed spectrum on the time information involved in the data processing in the data group grouping, and directly sending the data after occupying the unlicensed spectrum resource, thereby ensuring the data transmission efficiency of the unlicensed spectrum. It should be noted that, in this manner, it is mainly considered that, in the data generation process, time information may not be included or a predefined manner is adopted for the time information, and an index corresponding to a subframe or a slot carrying data transmission or an OFDM symbol may also be determined by a method used in any one of the embodiments described in fig. 2 to 5 in the following description of the present invention, which is not limited herein.

Further optionally, the data for data transmission does not include the time information of the first cell, and it may also be understood that the data for data transmission does not include the time information of the first cell at a specific time, and the specific time includes any time from M time to N time, where M time represents a data transmission start time of the first cell, and N time represents a data transmission start time at which the first cell may carry the time information of the first cell. In the embodiment of the present invention, the data transmission start time of the first cell may correspond to the start time when the first cell preempts the unlicensed spectrum resource.

As described above, the data transmission time of the first cell is not limited to the data transmission start time of the first cell, and may also be the time when the user equipment is scheduled with data, and further, if the first cell is a cell on the unlicensed spectrum, in the embodiment of the present invention, the data transmission time of the first cell may be any time from the time when the first cell preempts the unlicensed spectrum resources to the time when the first cell includes the unlicensed spectrum data transmission end time, and therefore, it may be understood that, in the embodiment of the present invention, according to the determined data transmission time, a time position corresponding to data transmission performed by the first cell corresponds to the data transmission time of the first cell, for example, any time from the time when the first cell preempts the unlicensed spectrum resources to the time when the first cell ends the unlicensed spectrum data transmission, the time when the first cell preempts the unlicensed spectrum resource may correspond to a data transmission start time of the first cell. It is understood that, if the time information of the first cell is determined by other parties after the first cell camps on the unlicensed spectrum resource (for example, by a method used in any one of the embodiments correspondingly described in fig. 2 to fig. 5 in the following description of the present invention), the time information of the first cell may be considered in the data packaging process after the first cell camps on the unlicensed spectrum resource, but since the data packaging requires a certain time, the data packaged by the time information of the first cell is not ready yet in the certain time, and therefore during the certain time, the data packaging can be performed by using the time information without including the first cell, and then the data transmission is completed. This time may correspond to starting from the data transmission start time of the first cell and ending to the data transmission start time of the first cell, which may include the time information of the first cell.

It should be noted that, if it is considered that the data for data transmission does not include the time information of the first cell at a specific time, the user equipment needs to know the specific time, or the user equipment needs to know from what time, it may be assumed that the data for data transmission includes the time information of the first cell. One way is that the UE may always assume that the data for data transmission does not include time information of a first cell, until receiving a trigger signaling, and the trigger signaling may determine the time information of the first cell according to a preset rule, where the trigger signaling may be from an unlicensed spectrum, or from a licensed spectrum, or from a physical layer signaling, or from a UE-specific physical layer signaling, or from a physical layer signaling common to cells, or from a physical layer signaling specific to a certain group of UEs; or, in one mode, the ue obtains the duration of a specific time or the time range of the specific time, and within the time range, it is assumed that the data for data transmission does not include the time information of the first cell, and outside the time range, it is assumed that the data for data transmission includes the time information of the first cell; alternatively, in one mode, the ue knows which time ranges of the data transmission time of the first cell can be assumed that the data for data transmission does not include the time information of the first cell, and which time ranges can be determined according to a preset rule, so as to assume that the data for data transmission includes the time information of the first cell. Obviously, the above-mentioned method needs to make the UE advance or determine the specific time information or the specific time information, and can be implemented in predefined, signaling, UE blind detection, and other manners.

It should be noted that, in the above embodiment, if the data is a signal, such as CRS, PRS, or CSI-RS, an OFDM symbol index in one subframe may be included in the data grouping process, and for the unlicensed spectrum resource, even if the occupied data transmission time is random, for example, the data transmission start time is uncertain in the OFDM symbol position in one subframe, the data including the OFDM symbol index may also be directly transmitted. For the user equipment, the data transmission start time may be used as the start position of a subframe to determine the index corresponding to the OFDM symbol included in the subframe, that is, assuming that the OFDM symbol position of the data transmission start time in a subframe actually corresponds to the OFDM symbol of index #5, the user equipment may use the OFDM symbol position corresponding to the data transmission start time as the start position of a subframe to determine the OFDM symbol index, that is, confirm that the OFDM index is #0, so that, even if the base station (first cell) considers the OFDM symbol index during the data packaging process, all or part of the packaged data is directly transmitted after preempting the unlicensed spectrum resources (part of the transmission depends on that if the duration from preempting to the unlicensed spectrum resources to the next subframe boundary is less than the duration required for transmitting the packaged data, part of the transmission is adopted), the user equipment may also receive the packaged data correctly, in accordance with the above understanding of the OFDM symbol index.

It should be noted that, although the above description is made by taking downlink data transmission as an example, the same applies to an uplink data transmission scenario.

Further optionally, the data for data transmission may or may not include a Public Land Mobile Network Identity (PLMN ID) of the first cell. The PLMN ID includes operator information to which the first cell belongs. If the data for data transmission includes the PLMN ID of the first cell, then it is possible to implement randomization of interference between data transmissions of different operators, especially on the unlicensed spectrum, where sites deployed by different operators may be close to each other due to no coordination and planning of site deployment, which may result in greater interference between different operators. On the other hand, if the data for data transmission does not include the PLMN ID of the first cell, for data generation, the existing data generation process may be reused as much as possible, and the implementation is simple for both the cell and the ue, and this implementation is more suitable for a scenario where different operator sites are far away, but is not limited to this scenario.

Fig. 2 is a schematic flow chart of another data transmission method in this embodiment of the present invention, where the method embodiment is implemented in a user equipment, and may include:

s201, determining a data transmission time of the first cell.

In an embodiment of the present invention, the first cell may be defined as a cell on an unlicensed spectrum. Specifically, the user equipment determines a data transmission time of the first cell, and it should be noted that the data transmission time of the first cell is not limited to the data transmission start time of the first cell, and may also be a data start time or a scheduled time.

In a specific implementation process, after the first cell seizes the spectrum resource of the unlicensed spectrum, the user equipment may determine, in a blind detection manner or a manner of buffering before detection, an initial time at which the first cell transmits data through the unlicensed spectrum. Optionally, the specific detection method includes energy detection and/or signal detection.

It should be noted that the foregoing related examples and alternative embodiments related to determining the data transmission time by the user equipment have been described in detail, and are not described herein again.

S202, determining the time information of the first cell according to a preset rule.

In this embodiment, the time information of the first cell is time information corresponding to a data transmission unit of the first cell, where the data transmission unit includes at least one of: one OFDM (Orthogonal Frequency division multiplexing) symbol, one slot, one subframe, one radio frame, one radio superframe. Wherein the time information corresponding to the data transmission unit comprises at least one of the following: OFDM symbol index, slot index, subframe index, radio frame index, radio superframe index. Time information of the first cell for at least one of: data scrambling code, HARQ time sequence.

It should be noted that the "preset rule" mentioned in this embodiment includes at least 3 types, and the following detailed description will be made with reference to fig. 3, fig. 4, and fig. 5, respectively.

S203, according to the time information of the first cell, data transmission is carried out with the first cell.

The embodiment of the invention firstly determines the data sending time of the first cell, then carries out data transmission with the first cell according to the determined data sending time, and can determine the time information on the license-free frequency spectrum and ensure the normal data communication between LTE devices by carrying out the data transmission with the first cell through the license-free frequency spectrum according to the data sending time of the first cell in the license frequency spectrum.

Fig. 3 is a flowchart illustrating a method for determining time information according to an embodiment of the present invention, where the method is implemented in a user equipment, and is a detailed development of "determining time information of the first cell according to a preset rule" in step S202 in fig. 2. As shown in the figure, the flow of the method for determining time information in this embodiment may include:

s301, according to the time information of the second cell and the data sending time, determining the time information corresponding to the data sending time.

In the embodiment of the present invention, the second cell and the first cell may be defined to be deployed on different spectrum resources. One way of having different spectrum resources is that the second cell is deployed in a different frequency band than the first cell, e.g., the second cell is deployed in a licensed spectrum and the first cell is deployed in an unlicensed spectrum; another way of the different spectrum resources is that the second cell is deployed in the same frequency band as the first cell, for example, the first cell is deployed in an unlicensed spectrum, and the second cell may also be deployed in the unlicensed spectrum, but the first cell and the second cell are deployed on different frequencies (or carriers) included in the unlicensed spectrum. Wherein the time information of the second cell comprises at least one of: OFDM symbol index, slot index, subframe index, radio frame index, radio superframe index. As an optional implementation manner, the ue determines time information on the second cell closest to the data transmission time as time information corresponding to the data transmission time.

Taking the data sending time as the data sending starting time of the first cell and the time information as the subframe index as an example, the user equipment may use the determined data sending time of the first cell as a subframe starting boundary on the unlicensed spectrum of the first cell, and meanwhile, the user equipment determines the subframe index corresponding to the starting time of data transmission on the unlicensed spectrum according to the time information of the licensed spectrum, such as the subframe index of the licensed spectrum. Specifically, referring to the schematic diagram of the time information of the unlicensed spectrum shown in fig. 18, the ue may use a subframe index corresponding to a starting boundary of a subframe on the licensed spectrum after the data transmission time of the determined unlicensed spectrum resource data transmission and closest to the time as a subframe index corresponding to a subframe at which the starting time of the data transmission on the unlicensed spectrum is located.

The above example belongs to a case that time information of a subframe of an unlicensed spectrum and a subframe of a licensed spectrum are not aligned, and the alignment concept in the embodiment of the present invention may refer to absolute alignment or may refer to alignment within an allowed time error range, for example, a maximum allowed time error range may be 260 nanoseconds, that is, if a System Frame Number (SFN) boundary between the unlicensed spectrum and the licensed spectrum or a subframe boundary or a radio Frame boundary has a time error of 260 nanoseconds, taking a transmitting end as an example, it may still be considered that the unlicensed spectrum and the licensed spectrum are aligned. Here, 260 nanoseconds is only an example. Please refer to fig. 19, which is a schematic diagram of time information alignment of spectrum, wherein fig. 19(a) is a diagram of absolute alignment of time information of an unlicensed spectrum and a licensed spectrum, and fig. 19(b) is a diagram given by taking an example that the time information of the unlicensed spectrum lags behind the time information of the licensed spectrum.

Optionally, an example of determining the time information corresponding to the data transmission time is also valid for a case where only a part of subframe boundaries on the unlicensed spectrum are not aligned with the subframe boundaries of the licensed spectrum, specifically referring to the schematic diagram of the time information of another unlicensed spectrum shown in fig. 20, as shown in the figure, other subframe boundaries except the first subframe boundary on the unlicensed spectrum are aligned with the subframe boundaries of the licensed spectrum.

For convenience of description, in this embodiment of the present invention, the data transmission time of the determined unlicensed spectrum resource data transmission is simply referred to as a first time, for example, the first time may be a data transmission start time of the first cell, or a time when the user equipment is scheduled with data, or may be any time included in the unlicensed spectrum data transmission end time of the first cell from a time when the first cell preempts the unlicensed spectrum resource to the first cell, and the time information of the determined first cell may be time information corresponding to a data transmission unit including the first time. In the following, the data transmission unit is taken as a subframe as an example.

It should be appreciated that an advantage of determining the time information on the second cell closest to the data transmission time as the time information corresponding to the data transmission time is that sufficient time can be left for HARQ timing processing on the unlicensed spectrum. For a user equipment with uplink single carrier capability, or for a user equipment whose uplink does not support carrier aggregation, only one carrier can be used as an uplink carrier for data transmission. At this time, even if the downlink can support carrier aggregation, for example, the unlicensed spectrum and the licensed spectrum are aggregated together, the uplink Acknowledgement (ACK) and the uplink Negative Acknowledgement (NACK) corresponding to the unlicensed spectrum downlink data transmission can be transmitted only on the licensed spectrum. Currently, in an LTE system, considering propagation delay and processing delay of information interaction (realized by transmitting and receiving through signals and/or channels) between a transmitting end and a receiving end, a Frequency Division Duplex (FDD) system is defined as follows: if the user equipment detects data scheduled to the user equipment in a downlink subframe n, including the detection of PDCCH, EPDCCH and PDSCH scheduled to the user equipment, the user equipment feeds back ACK or NACK in an uplink subframe n + 4; for a Time Division Duplex (TDD) system, define: if the user equipment detects data for scheduling the user equipment in the downlink subframe n, including detecting a PDCCH, an EPDCCH and a PDSCH scheduled to the user equipment, the user equipment feeds back ACK or NACK in an available uplink subframe which is behind the subframe n +4 and is closest to the subframe n + 4. The downlink ACK/NACK feedback for the uplink data has the same timing relationship with the downlink, which is not described in detail. It can be seen that for the current LTE system, the minimum time from the detection or reception of the scheduling data to the feedback of the ACK/NACK is 4 ms. Therefore, in the embodiment of the present invention, when determining the subframe index of the unlicensed spectrum, if the subframe index corresponding to the starting boundary of the subframe on the licensed spectrum, which is after the data transmission time of the first cell and is closest to the time, is used as the subframe index corresponding to the subframe where the first time is located, the shortest time required from the start of the detection or the reception of the scheduling data to the feedback of the ACK/NACK may be ensured, as shown in fig. 21. Fig. 21 illustrates an FDD system as an example, and for a TDD system, the same method may also be used to determine the subframe index corresponding to the subframe where the first time is located, except that the subframe marked with the feedback ACK or NACK in fig. 21 may be an available uplink subframe after the subframe n +5 (including the subframe n +5) in the TDD system. Fig. 22 shows another implementation manner for the length of the first time unit being greater than 1 subframe, and in fig. 22, the first time unit is also labeled as a subframe n +1, but it should be noted that the length of the subframe is already greater than 1ms defined in the current LTE system. In addition, the advantage of making the first time unit length greater than 1 subframe is that, assuming that the first time point described in fig. 22 is located in the second half subframe of a subframe (or located in the second time slot of a subframe), the number of OFDM symbols remaining at the subframe boundary may not be enough to support PDSCH scheduling, and then the data scheduling is considered in combination with the OFDM symbols remaining at the subframe boundary from the first time point to the subframe boundary in fig. 22 and the next subframe of 1ms, so that the unlicensed spectrum resources can be efficiently utilized for data transmission.

As another optional implementation manner, the user equipment determines, as the time information corresponding to the data transmission time, the time information corresponding to the time at which the time interval is specified from the data transmission time in the second cell.

Optionally, the specified time interval includes at least one of: m OFDM symbols, N slots, L fractional OFDM symbols, an integer multiple of K Ts, where M, N, L, K is an integer no less than zero. In addition, the specified time interval may be known to the UE in a predefined manner or a signaling notification manner, and the embodiment of the present invention is not limited to a specific notification method.

In consideration of the enhanced user equipment, the embodiment of the invention can be further expanded to: if the shortest time required from the detection or the reception of the scheduling data to the feedback of the ACK/NACK can be supported to be less than 4ms, the ue may further use a subframe index corresponding to a starting boundary of a subframe on the licensed spectrum before and closest to the first time as a subframe index corresponding to a subframe in which the first time is located, as shown in fig. 23. Similarly, the ue may also use a subframe index corresponding to a starting boundary of a subframe on the licensed spectrum before the first time and having a specific time interval from the first time as the subframe index of the subframe at the first time.

S302, determining the time information of the first cell according to the time information corresponding to the data sending time, wherein the second cell and the first cell are deployed on different frequency spectrum resources.

The second cell is deployed on a different spectrum resource than the first cell, e.g., the first cell is deployed on an unlicensed spectrum resource and the second cell is deployed on a licensed spectrum resource.

Still taking the subframe index as an example, referring to fig. 18 or fig. 20, the subframe index corresponding to the determined data transmission time (i.e. the first subframe index of the unlicensed spectrum) is the same as one subframe index of the licensed spectrum, the ue aligns the subframe index of the licensed spectrum with the first subframe index of the unlicensed spectrum, and establishes a correspondence relationship between the aligned licensed spectrum and the first subframe index of the unlicensed spectrum, so that subframe indexes of other subframes subsequent to the first cell can be correspondingly determined.

The embodiment of the invention firstly determines the data sending time of a first cell, then determines the time information corresponding to the data sending time according to the time information of a second cell and the data sending time, further determines the time information of the first cell, then performs data transmission with the first cell according to the time information of the first cell, can realize that the user equipment determines the time information of the unlicensed spectrum, taking the subframe index as an example, after the user equipment determines the subframe index of the unlicensed spectrum, the time slot index corresponding to the time slot (slot) included in the subframe can be determined, and simultaneously after the user equipment determines the subframe boundary, the OFDM symbol index included in the subframe can be determined, so that the user equipment can perform normal data communication with the first cell on the unlicensed spectrum according to the time information on the unlicensed spectrum, for example, recover a reference signal and determine a scrambling code sequence in the data generating process, determining HARQ timing, etc. It should be noted that, for ensuring that the subframe boundaries of the unlicensed spectrum and the licensed spectrum are aligned as much as possible, and making the first time unit of data communication between the first cell and the user equipment as large as 1 subframe, besides the HARQ timing, other time information, such as a slot index and an OFDM symbol index, used for recovering the reference signal in the first time unit, determining a scrambling code sequence in the data generation process, or implementing data scrambling may be used.

Fig. 4 is a flowchart illustrating another method for determining time information according to an embodiment of the present invention, where the method is implemented in a user equipment, and is a detailed expansion of "determining time information of the first cell according to a preset rule" in step S202 in fig. 2. As shown in the figure, the flow of the method for determining time information in this embodiment may include:

s401, predefined time information is obtained, and the time information of the first cell is located in a predefined time information range.

Wherein the predefined time information includes time information corresponding to each time unit included from the start of data transmission to the end of data transmission of the first cell, and the time unit includes at least one of the following: one OFDM symbol, one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the time unit comprises at least one of the following items: OFDM index, slot index, subframe index, radio frame index, radio superframe index.

S402, determining the time information of the first cell according to the predefined time information.

Specifically, the user equipment determines time information corresponding to each time unit of data transmission of the first cell on the unlicensed spectrum according to predefined time information.

Taking a radio frame as an example for explanation, the ue uses the starting time of data transmission of the unlicensed spectrum as the starting boundary of a radio frame according to predefined time information, and a radio frame index corresponding to the radio frame may be known by the ue in a predefined manner, or may be known by the ue in other notification manners, or if the radio frame index is not needed in the data communication process with the ue, the ue may not know the information, but needs to know the communication criterion. Let the time information corresponding to the time unit starting from the start time be P, and the time information corresponding to other time units after the time unit is numbered sequentially from P, where P is an integer not less than zero, and P may be 0. That is, in this example, whether the data transmission time on the unlicensed spectrum is one radio frame length, that is, 10ms, after the first cell camps on the unlicensed spectrum resource, according to the predefined information, the ue may use the start time of the unlicensed spectrum resource data transmission as the start boundary of one radio frame, that is, the index information for other time units after the time unit including the start time of the unlicensed spectrum resource data transmission, for example, other subframe indexes, may be in the form of sequential numbering, as shown in fig. 24 and fig. 25. It should be noted that, with regard to fig. 25, it is considered that the data transmission time of the unlicensed spectrum is limited, and therefore, for the data communication of the last subframe, if the data transmission time requirement of the unlicensed spectrum needs to be met, the rate matching operation may be performed. For example, in the unlicensed spectrum, after the opportunity of using the unlicensed spectrum resources is preempted, the data transmission time is 10ms at most, and for the last subframe in fig. 25 (i.e., the subframe labeled as subframe 9 in the figure), only a part of the subframe can be used to transmit data, which satisfies the requirement of 10ms transmission time, and for the parts other than 10ms, the part is not used for data transmission. Obviously, in this case, for the subframe 9, rate matching of data needs to be considered, and data communication between the user equipment and the first cell is realized; or, for the subframe 9, it may also be jointly scheduled together with the previous subframe 8, that is, based on the subframe boundary of the second cell, if the data transmission start time of the first cell is not located at the subframe boundary of the second cell, then the data end time of the first cell may not be located at the subframe boundary of the second cell under the condition that the unlicensed spectrum data transmission time is limited, in this case, in order to keep the subframe boundaries between the first cell and the second cell aligned as much as possible, in addition to making the time unit of the first data transmission greater than 1 subframe, it may also make the time unit of the last data transmission greater than 1 subframe, accordingly, for the data transmission included in the last time unit, because of being greater than 1 subframe, the data transmission included in the time unit may use the same subframe index at different time positions, Different subframe indices may also be employed.

Optionally, the time information corresponding to each time unit included from the start of data transmission to the end of data transmission in the first cell may also be the same, for example, the subframe index may be all 0.

Further, after the user equipment determines the subframe boundary, the OFDM symbol index in one subframe and the slot index in one subframe may be determined according to the relationship between the subframe and the OFDM symbol and the relationship between the subframe and the slot. The relationship between the subframe and the OFDM symbol is shown in table 1, the relationship between the subframe and the slot is shown in table 2, the relationship between the subframe and the radio frame is shown in table 3, where table 1 is illustrated by taking a Normal Cyclic Prefix (Normal CP) as an example, and for an Extended Cyclic Prefix (Extended CP), one subframe includes 12 OFDM symbols, and the distribution of symbol indexes and symbol positions in one subframe is similar to that in table 1, and is not described in detail.

TABLE 1

TABLE 2

It should be noted that the specific value of the slot index k in table 2 depends on the subframe index of the subframe where the slot is located, or may also depend on the radio frame index of the radio frame where the slot is located, and in one radio frame, the value range of the slot k is 0 to 19.

TABLE 3

It should be noted that the subframes in a radio frame in table 3 can be indicated by the subframe index (0-9) in the radio frame and the radio frame index of the radio frame, or can be indicated by the subframe index (0-10239) in a super-frame range, that is, the subframe index.

The embodiment of the invention firstly determines the data sending time of the first cell, then determines the time information of the first cell according to the predefined time information, and then performs data transmission with the first cell according to the time information of the first cell, so that the user equipment can obtain the time information of the license-free frequency spectrum, thereby facilitating the user equipment to recover the reference signal and realizing the normal data communication with the first cell. For the HARQ timing, the UE may determine that uplink ACK or NACK fed back for downlink data on the unlicensed spectrum should be fed back in the several subframes of the licensed spectrum according to the time information of the unlicensed spectrum and the time information of the licensed spectrum, that is, the UE may first determine, according to the time information of the unlicensed spectrum and the time information of the licensed spectrum, a subframe of the licensed spectrum corresponding to the subframe of the unlicensed spectrum, and as described in the first embodiment, to ensure processing time of HARQ, when determining the HARQ timing of the unlicensed spectrum, a subframe on the licensed spectrum closest to a starting boundary after the starting boundary of the subframe of the unlicensed spectrum may be used as a subframe corresponding to the subframe of the unlicensed spectrum, so that the UE may determine a feedback position of the uplink ACK/NACK, as shown in fig. 24 and 25.

Fig. 5 is a flowchart illustrating a further method for determining time information according to an embodiment of the present invention, where the method is implemented in a user equipment, and is a detailed development of "determining time information of the first cell according to a preset rule" in step S202 in fig. 2. As shown in the figure, the flow of the method for determining time information in this embodiment may include:

s501, detecting a signal carrying the time information of the first cell, and determining a sequence form of the signal.

Specifically, the user equipment determines a starting time of data transmission of the unlicensed spectrum resource, or determines that the first cell occupies the opportunity of using the unlicensed spectrum resource, and then determines a sequence form included in a signal by detecting the signal carrying the time information of the first cell.

It should be understood that different design methods of the sequence may represent time information corresponding to a time unit including the sequence, such as a subframe index, a slot index, and the like.

S502, determining the time information of the first cell according to the sequence form.

Specifically, the user equipment can determine time information corresponding to a time unit including the sequence by blindly detecting different forms of the sequence, and further determine time information corresponding to the first cell; or directly determining the time information corresponding to the first cell, for example, using the PSS in the existing LTE system as a signal for carrying the time information, the Zadoff-Chu sequence constituting the PSS has four different sequence forms (three of which are used in the LTE system), so that the Zadoff-Chu sequence can indicate at most four different time information, for example, four different subframe indexes, four different slot indexes, or four different OFDM symbol indexes. In addition, in the current LTE system, there are 168 different sequence forms in the sequence constituting the SSS, so that taking out 14 different sequence forms from the sequence constituting the SSS can be used to represent 14 different time information, for example, 14 different OFDM symbol indexes. In addition, in addition to using different sequence forms to carry different time information, different sequence forms may also be represented by using different time resources and/or frequency domain resource combinations occupied by the sequence, which is not limited in the embodiment of the present invention.

In a specific implementation process, the user equipment performs blind detection on a sequence carrying time information, and determines the time information of the license-free frequency spectrum through a determined sequence form. For the time information after the starting time, the user equipment may obtain the time information after the starting time in a sequential number form, or may obtain the time information after the starting time in other manners. Normal data communication can be maintained with the first cell over the unlicensed spectrum based on the determined time information for the unlicensed spectrum.

It should be noted that, in the process of determining the time information of the first cell, the above embodiments may be used singly or in combination, and are not limited herein. For example, in the data packet packaging process, the method of the embodiment correspondingly introduced in fig. 1 may be utilized, and in determining the HARQ timing of the first cell, the methods of other embodiments may be utilized.

According to the embodiment of the invention, the time information of the first cell is determined according to the sequence form, and then the data transmission is carried out with the first cell according to the determined time information of the first cell, so that the normal data communication between LTE (Long term evolution) equipment can be ensured, and the method and the device have the advantages of high use efficiency of frequency spectrum resources and low resource cost.

It should be noted that the scenario of uplink data transmission of the ue is slightly different from the embodiments correspondingly described in fig. 1 to fig. 5. In the process of uplink data transmission by the user equipment, the data packet may not include the time information of the first cell, so the user equipment may not determine the data transmission time of the first cell in advance, that is, does not perform data transmission through the scheduling of the first cell, but directly preempts the channel use opportunity and then transmits the data.

In the specific implementation process, the user equipment executes the following steps: determining local data sending time; and carrying out data transmission with the first cell according to the determined data sending time.

Fig. 6 is a flowchart illustrating a method for data transmission according to another embodiment of the present invention, where the method is implemented in a transmission device. As shown in the figure, the flow of the method for data transmission in this embodiment may include:

s601, determining the data transmission time of the local cell.

Specifically, the method for determining the data sending time by the transmission device is the same as that of the user equipment side, and is not described herein again. It should be noted that, slightly different from the method on the user equipment side, after the transmission device determines the time information of the unlicensed spectrum, the transmission device may process the transmission data by using the determined time information, where the transmission data includes at least one of the following: transmitted reference signals, transmitted control data, transmitted traffic data.

And S602, performing data transmission with the user equipment according to the determined data sending time.

As an optional implementation, a method for a transmission device to perform data transmission with a user equipment according to a determined data sending time is the same as that described in fig. 1 to fig. 4, and is not described again here. In addition, the transmission device may also determine the data transmission time of the local cell according to any time included between the starting time of preempting the unlicensed spectrum resource and the time of releasing the unlicensed spectrum resource.

As another optional implementation, the method for the transmission device to perform data transmission with the user equipment according to the determined data sending time corresponds to the user equipment described in fig. 5, and the specific interaction process is as follows: after determining the start time of the data transmission of the unlicensed spectrum resource, the transmission device determines the time and corresponding time information after the time, determines a sequence form which can be used for embodying the transmission time, and transmits a signal by using the sequence form, and the user device performs blind detection on the signal carrying the time information, further acquires the sequence form, and determines the time information of the unlicensed spectrum according to the sequence form.

It should be noted that, when there are both enhanced ue and non-enhanced ue (non-enhanced ue, it may be considered that the shortest time from detecting or receiving scheduling data to feeding back ACK/NACK is 4ms) in a system, for a cell that can serve both enhanced ue and non-enhanced ue, or according to the capability of non-enhanced ue, determine the time information of the unlicensed spectrum, at this time, the enhanced ue may obtain the determination criterion of the time information of the unlicensed spectrum by a predefined or notification manner; or the time information of the unlicensed spectrum is determined simultaneously according to the capabilities of the enhanced user equipment and the non-enhanced user equipment, it is obvious that, for the latter, if two types of user equipment are scheduled in the same subframe for a cell, different subframe indexes exist for different user equipment in the subframe, at this time, in order to ensure normal data communication between the cell and the two types of user equipment, a specific (UE-specific) data transmission mode may be adopted for the two types of user equipment, for example, data demodulation, channel measurement, and the like may be completed by using CSI-RS or DMRS, or a Frequency Division Multiplexing (FDM) or Code Division Multiplexing (CDM) mode or other orthogonal modes (for example, Beam Forming, BF)) to achieve orthogonal staggering; in addition, from the serving cell side, it is also possible to schedule different types of user equipments in different subframes, for example, to schedule non-enhanced user equipments in a first type of subframe, where the time information of the unlicensed spectrum is determined according to the capability of the type of non-enhanced user equipments, and to schedule enhanced user equipments in a second type of subframe, where the time information of the unlicensed spectrum is determined according to the capability of the type of enhanced user equipments. Obviously, when the ue accesses the serving cell or accesses the primary serving cell aggregated with the serving cell by using CA, the capability may be reported, so that the cell operating on the unlicensed spectrum knows how to determine the time information on the unlicensed spectrum when performing data communication with different types of ues.

Fig. 7 is a schematic structural diagram of a user equipment in an embodiment of the present invention. As shown in the figure, the ue in the embodiment of the present invention may include at least a time determination module 710 and a data transmission module 720, where:

a time determining module 710, configured to determine a data transmission time of the first cell.

In an embodiment of the present invention, the first cell may be defined as a cell on an unlicensed spectrum. Specifically, the time determining module 710 determines the data transmission time of the first cell, and it should be noted that the data transmission time of the first cell is not limited to the data transmission start time of the first cell, and may also be the data start time or the scheduled time.

In a specific implementation process, after the first cell preempts the spectrum resource of the unlicensed spectrum, the time determination module 710 may determine the starting time of the first cell for sending data through the unlicensed spectrum by blind detection or a mode of buffering before detection. Optionally, the specific detection method includes energy detection and/or signal detection.

A data transmission module 720, configured to perform data transmission with the first cell according to the determined data sending time.

In this embodiment, the time information of the first cell is time information corresponding to a data transmission unit of the first cell, where the data transmission unit includes at least one of: one OFDM (Orthogonal Frequency division multiplexing) symbol, one slot, one subframe, one radio frame, one radio superframe. Wherein the time information corresponding to the data transmission unit comprises at least one of the following: OFDM symbol index, slot index, subframe index, radio frame index, radio superframe index.

In a specific implementation process, the data transmission module 720 may further include an information determination unit 721 and a data transmission unit 722 as shown in fig. 8, where:

an information determining unit 721 is configured to determine the time information of the first cell according to a preset rule.

As an alternative implementation, the information determining unit 721 may further include a first sub-unit 721a and a second sub-unit 721b as shown in fig. 9, wherein:

a first sub-unit 721a, configured to determine, according to the time information of the second cell and the data transmission time, time information corresponding to the data transmission time. Optionally, the first sub-unit 721a may be specifically configured to determine, as the time information corresponding to the data sending time, time information corresponding to a time that is a specified time interval away from the data sending time in the second cell. The specified time interval comprises at least one of: m OFDM symbols, N slots, where M, N is an integer no less than zero. Alternatively, the first subunit 721a may be further specifically configured to determine, as the time information corresponding to the data sending time, the time information on the second cell that is closest to the data sending time.

A second subunit 721b, configured to determine, according to the time information corresponding to the data sending time, the time information of the first cell, where the second cell and the first cell are deployed on different spectrum resources.

As another optional implementation manner, the time information of the first cell is located in a predefined time information range, where the predefined time information is time information corresponding to each time unit included from a start time of data transmission to an end time of data transmission of the first cell, and the time unit includes at least one of: one OFDM symbol, one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the time unit comprises at least one of the following items: OFDM index, slot index, subframe index, radio frame index, radio superframe index.

Furthermore, the time information corresponding to the time unit starting from the starting time is P, and the time information corresponding to other time units after the time unit is numbered in sequence from P, where P is an integer not less than zero. Optionally, P may be 0.

Or further, the time information corresponding to each time unit is the same.

As yet another alternative, the information determining unit 721 may also further include a third sub-unit 721c and a fourth sub-unit 721d as shown in fig. 10, wherein:

a third subunit 721c, configured to detect a signal carrying time information of the first cell, and determine a sequence format of the signal.

A fourth subunit 721d, configured to determine the time information of the first cell according to the sequence form.

A data transmission unit 722, configured to perform data transmission with the first cell according to the time information of the first cell.

Optionally, the data for data transmission does not include time information of the local cell. Further optionally, the data for data transmission does not include a public land mobile network identifier of the cell.

In this embodiment of the present invention, the time information of the first cell is used for at least one of: data scrambling code, HARQ time sequence.

Fig. 11 is a schematic structural diagram of a transmission device in an embodiment of the present invention. As shown in the figure, the transmission device in the embodiment of the present invention may include at least a time determination module 810 and a data transmission module 820, where:

a time determining module 810, configured to determine a data transmission time of the local cell.

In the embodiment of the present invention, the local cell may be defined as a cell on the unlicensed spectrum. Specifically, the time determining module 810 determines the data transmission time of the local cell, and it should be noted that the data transmission time of the local cell is not limited to the data transmission start time of the local cell, and may also be the data start time or the scheduled time.

In a specific implementation process, after the cell occupies the spectrum resource of the unlicensed spectrum, the time determination module 810 may determine the starting time of sending data through the unlicensed spectrum by the cell in a blind detection manner or a manner of caching and then detecting. Optionally, the specific detection method includes energy detection and/or signal detection.

A data transmission module 820, configured to perform data transmission with the local cell according to the determined data sending time. In a specific implementation process, the data transmission module 820 may further include an information determination unit 821 and a data transmission unit 822 as shown in fig. 12, where:

an information determining unit 821, configured to determine the time information of the local cell according to a preset rule.

In this embodiment, the time information of the cell is time information corresponding to a data transmission unit of the cell, where the data transmission unit includes at least one of the following: one OFDM (Orthogonal Frequency division multiplexing) symbol, one slot, one subframe, one radio frame, one radio superframe. Wherein the time information corresponding to the data transmission unit comprises at least one of the following: OFDM symbol index, slot index, subframe index, radio frame index, radio superframe index.

In a specific implementation process, the data transmission module 820 may further include an information determination unit 821 and a data transmission unit 822 as shown in fig. 12, where:

As an alternative embodiment, the information determination unit 821 may further include a first sub-unit 821a and a second sub-unit 821b as shown in fig. 13, wherein:

the first sub-unit 821a is configured to determine, according to the time information of the second cell and the data transmission time, time information corresponding to the data transmission time. Optionally, the first sub-unit 821a may be specifically configured to determine, as the time information corresponding to the data transmission time, time information corresponding to a time that is a specified time interval away from the data transmission time in the second cell. The specified time interval comprises at least one of: m OFDM symbols, N slots, where M, N is an integer no less than zero. Optionally, the first sub-unit 821a may be further specifically configured to determine, as the time information corresponding to the data transmission time, time information on the second cell that is closest to the data transmission time.

A second subunit 821b, configured to determine, according to the time information corresponding to the data sending time, the time information of the local cell, where the second cell and the local cell are deployed on different spectrum resources.

As another optional implementation manner, the time information of the local cell is located in a predefined time information range, where the predefined time information is time information corresponding to each time unit included from a start time of data transmission to an end time of data transmission of the local cell, and the time unit includes at least one of the following: one OFDM symbol, one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the time unit comprises at least one of the following items: OFDM index, slot index, subframe index, radio frame index, radio superframe index.

Or further, the time information corresponding to each time unit is the same.

As yet another alternative, the information determining unit 821 may also further include a third sub-unit 821c and a fourth sub-unit 821d as shown in fig. 14, wherein:

the third sub-unit 821c is configured to detect a signal carrying time information of the local cell, and determine a sequence form of the signal.

A fourth sub-unit 821d, configured to determine time information of the local cell according to the sequence format.

A data transmission unit 822, configured to perform data transmission with the ue according to the time information of the local cell.

In the embodiment of the present invention, the time information of the local cell is used for at least one of the following: data scrambling code, HARQ time sequence.

Fig. 15 is a schematic structural diagram of a system for data transmission according to an embodiment of the present invention. As shown, the system for data transmission in the embodiment of the present invention may include at least a user equipment 910 and a transmission equipment 920.

Fig. 16 is a schematic structural diagram of another user equipment according to an embodiment of the present invention, and as shown in fig. 16, the user equipment may include: at least one processor 1001, such as a CPU, at least one antenna port 1003, memory 1004, at least one communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The antenna port 1003 in the embodiment of the present invention is used for performing signaling or data communication with other node devices. The memory 1004 may be a high-speed RAM memory or a non-volatile memory (e.g., at least one disk memory). Optionally, the memory 1004 may also be at least one storage device located remotely from the processor 1001. A set of program codes is stored in the memory 1004 and the processor 1001 is used to call up the program codes stored in the memory 1004 for performing the following operations:

determining data transmission time of a first cell;

In an aspect, optionally, the data for data transmission does not include time information of the first cell.

On the other hand, optionally, the processor 1001 performs data transmission with the first cell according to the determined data sending time, and specifically performs the following operations:

determining time information of the first cell according to a preset rule;

Optionally, the processor 1001 determines, according to a preset rule, that the time information of the first cell specifically is:

Further optionally, the processor 1001 determines, according to the time information of the second cell and the data sending time, that the time information corresponding to the data sending time is specifically:

and determining the time information corresponding to the time which is a specified time interval away from the data transmission time on the second cell as the time information corresponding to the data transmission time. The specified time interval comprises at least one of: m OFDM symbols, N slots, where M, N is an integer no less than zero.

Or, determining the time information on the second cell closest to the data transmission time as the time information corresponding to the data transmission time.

Still further optionally, the time information of the first cell is within a predefined time information range;

And the time information corresponding to the time unit starting from the starting time is P, and the time information corresponding to other time units after the time unit is numbered in sequence from P, wherein P is an integer not less than zero. The P may be 0.

Or, the time information corresponding to each time unit is the same.

Still further optionally, the processor 1001 determines, according to the time information of the second cell and the data sending time, that the time information corresponding to the data sending time is specifically:

determining time information of the first cell according to the sequence form.

Optionally, the time information of the first cell is time information corresponding to a data transmission unit of the first cell, where the data transmission unit includes at least one of: one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the data transmission unit comprises at least one of the following: slot index, subframe index, radio frame index, radio superframe index.

Optionally, the time information of the first cell is used for at least one of: data scrambling code, HARQ time sequence.

Optionally, the first cell is a cell on an unlicensed spectrum.

Fig. 17 is a schematic structural diagram of another transmission device according to an embodiment of the present invention, and as shown in fig. 17, the user equipment may include: at least one processor 1101, e.g., a CPU, at least one antenna port 1103, memory 1104, at least one communication bus 1102. Wherein a communication bus 1102 is used to enable connective communication between these components. The antenna port 1103 in the embodiment of the present invention is used for performing signaling or data communication with other node devices. The memory 1104 may be a high-speed RAM memory or a non-volatile memory (e.g., at least one disk memory). Optionally, the memory 1104 may also be at least one memory device located remotely from the processor 1101. A set of program codes is stored in the memory 1104 and the processor 1101 is used to call up the program codes stored in the memory 1104 for performing the following operations:

determining the data transmission time of the cell;

In the first aspect, optionally, the data for data transmission does not include the time information of the local cell.

Optionally, the data for data transmission does not include the time information of the first cell at a specific time, where the specific time includes any time from M time to N time, where M time represents a data transmission start time of the first cell, and N time represents a data transmission start time of the first cell carrying the time information of the first cell.

Optionally, at least one of the processes from the generation of data bits to the emission by the antenna of the data for data transmission does not include the time information of the first cell, and the processes include at least one of the following: scrambling, modulation mapping, layer mapping, precoding, resource element mapping, OFDM signal generation, varying precoding, SC-FDMA signal generation, antenna port mapping.

Further optionally, the initialization value of the scrambling code sequence used by the data for data transmission does not include time information.

Further optionally, the determining of the initialization value of the scrambling code sequence used by the data for data transmission includes:

an identification ID indicating a cell of data transmission;

if the data for data transmission is data carried by the PCFICH, the data carried by the PCFICHThe initialization value of the scrambling sequence used by the data is

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An ID representing an EPDCCH, the m representing an EPDCCH set index;

Representing data transmissionThe identification ID of the cell of (a);

An identification ID indicating a cell of data transmission;

if the data for data transmission is CSI-RS, the data is transmitted to the mobile stationInitialization value of scrambling sequence used for CSI-RS generation is

An identification ID representing the channel state information CSI.

In the second aspect, optionally, the processor 1101 performs data transmission with the local cell according to the determined data sending time, and specifically performs:

determining the time information of the local cell according to a preset rule;

Optionally, the processor 1101 determines, according to a preset rule, that the time information of the local cell specifically is:

Further optionally, the processor 1101 determines, according to the time information of the second cell and the data sending time, that the time information corresponding to the data sending time is specifically:

In addition, further optionally, the time information of the local cell is located in a predefined time information range;

the predefined time information is time information corresponding to each time unit included from the beginning of data transmission to the end of data transmission in the cell, where the time unit includes at least one of the following: one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the time unit comprises at least one of the following items: slot index, subframe index, radio frame index, radio superframe index.

Or, the time information corresponding to each time unit is the same.

Still further optionally, the processor 1101 determines, according to the time information of the second cell and the data sending time, that the time information corresponding to the data sending time is specifically:

detecting a signal bearing the time information of the local cell and determining the sequence form of the signal;

and determining the time information of the local cell according to the sequence form.

Optionally, the time information of the local cell is time information corresponding to a data transmission unit of the local cell, where the data transmission unit includes at least one of the following: one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the data transmission unit comprises at least one of the following: slot index, subframe index, radio frame index, radio superframe index.

Optionally, the time information of the local cell is used for at least one of the following: data scrambling code, HARQ time sequence.

Optionally, the local cell is a cell on an unlicensed spectrum.

An embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores a program, where the program includes a plurality of instructions to execute some or all of the steps in a data transmission method described in fig. 1 to 6 according to an embodiment of the present invention.

The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.

Claims

1. A method of data transmission, the method comprising:

determining data transmission time of a first cell; the first cell is a cell on an unlicensed spectrum;

performing data transmission with the first cell according to the determined data sending time;

wherein the data for data transmission does not include time information of the first cell;

at least one of the processes experienced by the data for data transmission from data bit generation to transmission by an antenna does not include time information for the first cell, the experienced processes including at least one of: scrambling, modulation mapping, layer mapping, precoding, resource element mapping, OFDM signal generation, variable precoding, SC-FDMA signal generation and antenna port mapping;

alternatively, the first and second electrodes may be,

2. The method of claim 1, wherein the data for data transmission does not include the time information of the first cell at a specific time, and the specific time includes any time from M time to N time, where M time represents a data transmission start time of the first cell, and N time represents a data transmission start time of the first cell carrying the time information of the first cell.

3. The method of claim 1, wherein the initialization value of the scrambling sequence used by the data for data transmission is determined by:

an identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An ID representing an EPDCCH, the m representing an EPDCCH set index;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An identification ID representing the channel state information CSI.

4. The method of claim 2, wherein the initialization value of the scrambling sequence used by the data for data transmission is determined by:

The A represents an arbitrary real number independent of the first cell time information, and the n_RNTIIs shown and describedA Radio Network Temporary Identity (RNTI) corresponding to the PDSCH, wherein q represents any value related to the number of code words, and the RNTI is a value corresponding to the PDSCH

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An ID representing an EPDCCH, the m representing an EPDCCH set index;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An identification ID representing the channel state information CSI.

5. The method of any one of claims 1-4, wherein the time information of the first cell is time information corresponding to a data transmission unit of the first cell, and the data transmission unit comprises at least one of: one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the data transmission unit comprises at least one of the following: slot index, subframe index, radio frame index, radio superframe index.

6. The method according to any of claims 1-4, wherein the time information of the first cell is used for at least one of: data scrambling code, HARQ time sequence.

7. The method of claim 5, wherein the time information of the first cell is used for at least one of: data scrambling code, HARQ time sequence.

8. A method of data transmission, the method comprising:

determining the data transmission time of the cell; the local cell is a cell on an unlicensed spectrum;

carrying out data transmission with the user equipment according to the determined data sending time;

wherein, the data for data transmission does not include the time information of the local cell;

wherein at least one of the processes from the generation of data bits to the transmission by the antenna of the data for data transmission does not include the time information of the local cell, and the processes include at least one of the following: scrambling, modulation mapping, layer mapping, precoding, resource element mapping, OFDM signal generation, variable precoding, SC-FDMA signal generation and antenna port mapping;

alternatively, the first and second electrodes may be,

9. The method according to claim 8, wherein the data for data transmission does not include the time information of the local cell at a specific time, and the specific time includes any time from M time to N time, where M time represents a data transmission start time of the local cell, and N time represents a data transmission start time of the local cell carrying the time information of the local cell.

10. The method of claim 8, wherein the initialization value of the scrambling sequence used by the data for data transmission is determined by:

A represents an arbitrary real number independent of the first cell time information, and n_RNTIRepresents a Radio Network Temporary Identity (RNTI) corresponding to the PDSCH, q represents an arbitrary number related to the number of codewords, and

an identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An ID representing an EPDCCH, the m representing an EPDCCH set index;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An identification ID representing the channel state information CSI.

11. The method of claim 9, wherein the initialization value of the scrambling sequence used by the data for data transmission is determined by:

an identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An ID representing an EPDCCH, the m representing an EPDCCH set index;

Cell for indicating data transmissionThe identification ID of (1);

An identification ID indicating a cell of data transmission;

An identification ID representing the channel state information CSI.

12. The method according to any one of claims 8 to 11, wherein the time information of the local cell is time information corresponding to a data transmission unit of the local cell, and the data transmission unit includes at least one of: one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the data transmission unit comprises at least one of the following: slot index, subframe index, radio frame index, radio superframe index.

13. The method according to any of claims 8-11, wherein the time information of the own cell is used for at least one of: data scrambling code, HARQ time sequence.

14. The method of claim 12, wherein the time information of the local cell is used for at least one of: data scrambling code, HARQ time sequence.

15. A user equipment, the user equipment comprising:

a time determining module, configured to determine a data sending time of a first cell, where the first cell is a cell on an unlicensed spectrum;

the data transmission module is used for carrying out data transmission with the first cell according to the determined data sending time;

wherein at least one of the processes experienced by the data for data transmission from data bit generation to transmission by an antenna does not include time information for the first cell, the experienced processes including at least one of: scrambling, modulation mapping, layer mapping, precoding, resource element mapping, OFDM signal generation, variable precoding, SC-FDMA signal generation and antenna port mapping;

alternatively, the first and second electrodes may be,

16. The ue of claim 15, wherein the data for data transmission does not include the time information of the first cell at a specific time, and the specific time includes any time from M time to N time, where M time represents a data transmission start time of the first cell, and N time represents a data transmission start time of the first cell carrying the time information of the first cell.

17. The UE of claim 15, wherein the initialization value of the scrambling sequence used for the data transmission is determined by:

an identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

The D representation and the firstAny real number independent of cell time information, said

An ID representing an EPDCCH, the m representing an EPDCCH set index;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An identification ID representing the channel state information CSI.

18. The UE of claim 16, wherein the initialization value of the scrambling sequence used for the data transmission is determined by:

The A represents an arbitrary real number independent of the first cell time information, and the n_RNTIRepresents a Radio Network Temporary Identity (RNTI) corresponding to the PDSCH, and q represents a number of codewordsAny numerical value of numerical correlation, said

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

if the data for data transmission is the data carried by the EPDCCH, the data for data transmission is the data carried by the EPDCCHThe initialization value of the scrambling code sequence used by the data carried by the EPDCCH is

An ID representing an EPDCCH, the m representing an EPDCCH set index;

An identification ID indicating a cell of data transmission;

An identification ID indicating a cell of data transmission;

The G isRepresents an arbitrary real number independent of the first cell time information, the/represents an OFDM symbol index within one subframe, the

An identification ID representing the channel state information CSI.

19. The UE of any one of claims 15-18, wherein the time information of the first cell is time information corresponding to a data transmission unit of the first cell, and the data transmission unit comprises at least one of: one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the data transmission unit comprises at least one of the following: slot index, subframe index, radio frame index, radio superframe index.

20. The user equipment according to any of claims 15-18, wherein the time information of the first cell is used for at least one of: data scrambling code, HARQ time sequence.

21. The user equipment of claim 19, wherein the time information of the first cell is for at least one of: data scrambling code, HARQ time sequence.

22. A transmission device, wherein the transmission device corresponds to a cell, the transmission device comprising:

a time determining module, configured to determine a data sending time of a local cell, where the local cell is a cell on an unlicensed spectrum;

the data transmission module is used for carrying out data transmission with the user equipment according to the determined data sending time;

alternatively, the first and second electrodes may be,

23. The transmission apparatus according to claim 22, wherein the data for data transmission does not include the time information of the local cell at a specific time, and the specific time includes any time from M time to N time, where M time represents a data transmission start time of the local cell, and N time represents a data transmission start time of the local cell carrying the time information of the local cell.

24. The transmission device of claim 22, wherein the means for determining the initialization value of the scrambling sequence used by the data for data transmission comprises:

A represents an arbitrary real number independent of the time information of the local cell, and n represents_RNTIRepresents a Radio Network Temporary Identity (RNTI) corresponding to the PDSCH, q represents an arbitrary number related to the number of codewords, and

an identification ID indicating a cell of data transmission;

The I represents an arbitrary real number independent of the time information of the local cell, and the I represents an arbitrary real number independent of the time information of the local cell

B represents an arbitrary real number independent of the time information of the local cell, and

an identification ID indicating a cell of data transmission;

C represents an arbitrary real number independent of the time information of the local cell, and

an identification ID indicating a cell of data transmission;

D represents an arbitrary real number independent of the local cell time information, the

An ID representing an EPDCCH, the m representing an EPDCCH set index;

The E represents an arbitrary real number independent of the local cell time information, and the E represents an arbitrary real number independent of the local cell time information

An identification ID indicating a cell of data transmission;

F represents any real number irrelevant to the time information of the cell, l represents an OFDM symbol index in one subframe, and N represents the OFDM symbol index in the subframe_CPIs related to the CP type, the CP type comprises a normal CP and an extended CP, the value of (A) is related to the CP type

An identification ID indicating a cell of data transmission;

The G represents any real number irrelevant to the time information of the cell, the l represents an OFDM symbol index in one subframe, and the

H represents an arbitrary real number independent of the time information of the local cell, and

J represents an arbitrary real number independent of the own cell time information, and

an identification ID representing the channel state information CSI.

25. The transmission device of claim 23, wherein the means for determining the initialization value of the scrambling sequence used by the data for data transmission comprises:

an identification ID indicating a cell of data transmission;

an identification ID indicating a cell of data transmission;

an identification ID indicating a cell of data transmission;

An ID representing an EPDCCH, the m representing an EPDCCH set index;

Representing dataThe identification ID of the transmitted cell;

An identification ID indicating a cell of data transmission;

an identification ID representing the channel state information CSI.

26. The transmission apparatus according to any one of claims 22 to 25, wherein the time information of the local cell is time information corresponding to a data transmission unit of the local cell, and the data transmission unit includes at least one of: one slot, one subframe, one radio frame, one radio superframe; the time information corresponding to the data transmission unit comprises at least one of the following: slot index, subframe index, radio frame index, radio superframe index.

27. The transmission apparatus according to any of claims 22-25, wherein the time information of the local cell is used for at least one of: data scrambling code, HARQ time sequence.

28. The transmission device according to claim 26, wherein the time information of the local cell is used for at least one of: data scrambling code, HARQ time sequence.

29. A system for data transmission, characterized in that the system comprises a user equipment according to any of claims 15-21 and a transmission device according to any of claims 22-28.

30. A computer storage medium, characterized in that the computer storage medium stores a program which, when executed, comprises the method of any one of claims 1-7.

31. A computer storage medium, characterized in that the computer storage medium stores a program which, when executed, comprises the method of any one of claims 8-14.

32. A user equipment, characterized in that the user equipment comprises an antenna port, a memory and a processor, wherein the memory stores a set of programs and the processor is configured to invoke the programs stored in the memory for performing the method of any of claims 1-7.

33. A transmission device, the transmission device corresponding to a cell, the transmission device comprising an antenna port, a memory, and a processor, wherein the memory stores a set of programs, and the processor is configured to invoke the programs stored in the memory for performing the method of any one of claims 8-14.