CN106161312A

CN106161312A - A kind of data transmission method and device

Info

Publication number: CN106161312A
Application number: CN201510130694.5A
Authority: CN
Inventors: 王锐; 沈晓冬; 柯颋; 刘建军
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2015-03-24
Filing date: 2015-03-24
Publication date: 2016-11-23
Anticipated expiration: 2035-03-24
Also published as: CN106161312B; WO2016150224A1

Abstract

The present invention relates to wireless communication technology field, particularly relate to a kind of data transmission method and device, in order to solve the problem that existing transmission means is not supported to carry out data transmission in the imperfect subframe of unauthorized frequency range.The data transmission method that the embodiment of the present invention provides includes: be user equipment (UE) configurating downlink control information DCI；Described DCI is for indicating that this UE obtains the user data that cell is transmitted in the imperfect subframe of the unauthorized frequency range taking；Send the described DCI of configuration to described UE, and transmit user data to described UE in the imperfect subframe of described DCI instruction.The embodiment of the present invention takes full advantage of the imperfect subframe of the unauthorized frequency range that cell takies, it is achieved that the data transmission in this imperfect subframe, improves sub-frame resources utilization rate.

Description

A kind of data transmission method and device

Technical field

The present invention relates to wireless communication technology field, particularly relate to a kind of data transmission method and device.

Background technology

The surge of data traffic in mobile Internet, each big operation commercial city is being explored in unauthorized frequency range Use Long Term Evolution (Long Term Evolution, LTE) technology, thus developed a kind of entitled auxiliary Help and authorize the technology accessing (License-assisted Access, LAA).

Owing to unauthorized frequency range is open for all of operation commercial city, different operators has identical power Profit disposes LTE in unauthorized frequency range.In order to make different system or the fair competition of different operator use unauthorized frequency Section, authorizes in (License-assisted Access, the LAA) technology of access in auxiliary and introduces listem-before-talk (listen before talk, LBT) mechanism, i.e. before carrying out data transmission every time, first reserves a period of time Perception is carried out to carrier wave, carries out clear channel assessment (CCA) (Clear Channel Assessment, CCA) mistake Journey, can be transmitted by just proceeding by data when perceiving carrier wave, and when carrying out data transmission having maximum every time Long restriction.

The minimum thread of LTE system is a subframe (1ms), therefore in existing LTE system, Control channel is both for complete subframe designs.Front 1～3 OFDM of each subframe (Orthogonal Frequency Division Multiplexing, OFDM) symbol is used for carrying out physical down Control channel (Physical Downlink Control Channel, PDCCH) transmission.And CCA is permissible Occur in any time of subframe, duration minimum 20us, therefore, the introducing of CCA, can bring Imperfect subframe problem.As shown in Fig. 1 (a), cell passes through CCA process, and available carrier wave is arrived in competition Time location is not sub-frame boundary, and at this moment, cell needs to proceed by control information in imperfect subframe And the transmission of data.Further, since LBT mechanism has the restriction of maximum transmitted duration, finally enter line number According to the subframe of transmission it could also be possible that imperfect subframe, as shown in Fig. 1 (b).

Obviously, existing transmission means is not supported to carry out data transmission in the imperfect subframe of unauthorized frequency range.

Content of the invention

The embodiment of the present invention provides a kind of data transmission method and device, in order to solve existing transmission means not The problem supporting to carry out data transmission in the imperfect subframe of unauthorized frequency range.

The embodiment of the present invention provides a kind of data transmission method, comprising:

For user equipment (UE) configurating downlink control information DCI；It is little that described DCI is used for indicating that this UE obtains The user data that district transmits in the imperfect subframe of the unauthorized frequency range taking；

Send the described DCI of configuration to described UE, and to institute in the imperfect subframe of described DCI instruction State UE transmission user data.

Alternatively, the described DCI of configuration is sent to described UE, comprising:

In the complete subframe of the unauthorized frequency range taking, send the described DCI of configuration to described UE.

Alternatively, described DCI comprises the information indicating the subframe scheduled in this DCI, wherein, this DCI Scheduled subframe includes the complete subframe at this DCI place, and the complete subframe phase with this DCI place The first adjacent imperfect subframe and/or the second imperfect subframe；Wherein, described first imperfect subframe is at this Subframe before the complete subframe at DCI place, complete at this DCI place of described second imperfect subframe Subframe after subframe.

Alternatively, the described DCI of configuration is sent to described UE, and at the imperfect son of described DCI instruction User data is transmitted to described UE in frame, comprising:

If the subframe scheduled in this DCI includes the described first imperfect subframe, then send configuration to described UE Described DCI before, in described first imperfect subframe to described UE transmit user data；And/or,

If the subframe scheduled in this DCI includes the described second imperfect subframe, then send configuration to described UE Described DCI after, in described second imperfect subframe to described UE transmit user data.

Alternatively, if the subframe scheduled in this DCI includes the described first imperfect subframe；Then to described UE Before sending the described DCI of configuration, also include:

Send placeholder to described UE in described first imperfect subframe；

Wherein, described placeholder comprises the indicating bit indicating the time location of this placeholder end of transmission, uses In instruction described UE caching receive from the time location of this placeholder end of transmission to this first imperfect son All data between the end position of frame, and based on the described DCI of receipt of subsequent, from all numbers of caching Described user data is extracted according to.

Alternatively, described DCI also comprises instruction in this first imperfect subframe, transmit rising of user data The information of beginning time location.

Alternatively, described DCI also comprises instruction and just transmitting user data in this first imperfect subframe Hand over the information of frequency division multiplex OFDM symbolic number；Or, in this first imperfect subframe, transmit number of users According to OFDM symbol number be 14-d1, d1 is for transmitting the initial of user data in this first imperfect subframe Time location；Or, the OFDM symbol number transmitting user data in this first imperfect subframe is pre- If numerical value.

Alternatively, if the subframe scheduled in this DCI includes the described second imperfect subframe, then described DCI In also comprise instruction in this second imperfect subframe transmit user data orthogonal frequency division multiplex OFDM symbol The information of number number；Or, the OFDM symbol number transmitting user data in this second imperfect subframe is Default value.

In described imperfect subframe, send the described DCI of configuration to described UE.

Alternatively, described method also includes:

Based on the start time position sending described DCI, send cell specific reference signal CRS, so that The DCI that described UE receives based on described CRS demodulation.

Alternatively, send the DCI of configuration to described UE before, also include:

In described imperfect subframe, send placeholder to described UE, described placeholder comprises instruction and passes The indicating bit of the start time position of defeated described DCI.

Alternatively, described DCI comprises instruction in described imperfect subframe, transmits the orthogonal frequency of user data Divide the information of multiplexing OFDM symbol number；Or, in described imperfect subframe, transmit user to described UE The OFDM symbol number of data is 14-d2-P, d2 for sending the start time position of described DCI, P for The OFDM symbol number of transmission DCI in described imperfect subframe；Or, in described imperfect subframe to The OFDM symbol number of described UE transmission user data is default value.

Alternatively, if to the OFDM symbol number of described UE transmission user data in described imperfect subframe For default value N, then the OFDM symbol number transmitting DCI in described imperfect subframe is 14-d2-N.

A kind of data transmission method that another embodiment of the present invention provides, comprising:

Receive the Downlink Control Information DCI that cell sends；

Based on described DCI, obtain the user that cell is transmitted in the imperfect subframe of the unauthorized frequency range taking Data.

Alternatively, the DCI that cell sends is received, comprising:

Receive the DCI that cell sends in the complete subframe of the unauthorized frequency range taking.

Alternatively, based on described DCI, obtain cell and pass in the imperfect subframe of the unauthorized frequency range taking Defeated user data, comprising:

Based on described DCI, all numbers transmitting in described first imperfect subframe from the described cell of caching According to middle extraction user data；And/or,

Based on described DCI, receive the user data that described cell is transmitted in described second imperfect subframe.

Alternatively, before receiving the DCI that cell sends, also include:

Receive the placeholder that cell sends in described first imperfect subframe；Wherein, described placeholder wraps Indicating bit containing the time location indicating this placeholder end of transmission；

Caching receive from the time location of this placeholder end of transmission to the knot of described first imperfect subframe All data between bundle position.

Alternatively, the DCI that cell sends is received, comprising:

Receive the DCI that cell sends in described imperfect subframe.

Alternatively, the user data that cell is transmitted in described imperfect subframe is obtained, comprising:

Based on described DCI, receive the user data that described cell is transmitted in described imperfect subframe.

Alternatively, described method also includes:

Send the start time position of described DCI based on cell, receive cell specific reference signal CRS；

The DCI receiving based on described CRS demodulation.

Alternatively, before receiving described DCI, also include:

Receive the placeholder that cell sends in described imperfect subframe, described placeholder comprises instruction transmission The indicating bit of the start time position of DCI.

The embodiment of the present invention provides a kind of data transmission device, comprising:

Configuration module, is used for as user equipment (UE) configurating downlink control information DCI；Described DCI is used for referring to Show that this UE obtains the user data that cell is transmitted in the imperfect subframe of the unauthorized frequency range taking；

Sending module, for the described DCI to described UE transmission configuration, and indicates not at described DCI User data is transmitted to described UE in complete subframe.

Another embodiment of the present invention provides a kind of data transmission device, comprising:

Receiver module, for receiving the Downlink Control Information DCI that cell sends；

Acquisition module, for based on described DCI, obtains the imperfect son in the unauthorized frequency range taking for the cell The user data of transmission in frame.

Another embodiment of the embodiment of the present invention provides a kind of data transmission method, comprising:

Transmission of configuration information for user equipment (UE) configurating downlink control information DCI；Described DCI is used for referring to Show that this UE receives the user data that cell is transmitted in the imperfect subframe of the unauthorized frequency range taking；Described Transmission of configuration information includes that cell sends the start time position of described DCI in this imperfect subframe；

Described transmission of configuration information is sent to described UE, and based on the transmission of configuration information of described DCI, Send described DCI in the imperfect subframe of the unauthorized frequency range taking.

Another embodiment of the present invention provides a kind of data transmission method, comprising:

Receive the transmission of configuration information of the Downlink Control Information DCI that base station sends；Described DCI is used for indicating This UE receives the user data that cell is transmitted in the imperfect subframe of the unauthorized frequency range taking；Described biography Defeated configuration information includes the start time position sending described DCI in cell in this imperfect subframe；

Based on the transmission of configuration information of described DCI, receive the imperfect son in the unauthorized frequency range taking for the cell The described DCI sending in frame.

Configuration module, for the transmission of configuration information for user equipment (UE) configurating downlink control information DCI； Described DCI is for indicating that this UE receives what cell was transmitted in the imperfect subframe of the unauthorized frequency range taking User data；Described transmission of configuration information includes that cell sends the initial of described DCI in this imperfect subframe Time location；

Sending module, is used for being sent to described transmission of configuration information described UE, and based on described DCI's Transmission of configuration information, sends described DCI in the imperfect subframe of the unauthorized frequency range taking.

First receiver module, for receiving the transmission of configuration information of the Downlink Control Information DCI that base station sends； Described DCI is for indicating that this UE receives what cell was transmitted in the imperfect subframe of the unauthorized frequency range taking User data；Described transmission of configuration information includes sending rising of described DCI in this imperfect subframe in cell Beginning time location；

Second receiver module, for the transmission of configuration information based on described DCI, receives cell non-take The described DCI sending in authorizing the imperfect subframe of frequency range.

Use above-mentioned a kind of embodiment, by configuring and Downlink Control Information DCI can be sent to UE, come Instruction UE obtains the user data that cell is transmitted in the imperfect subframe of the unauthorized frequency range taking.Use Another embodiment above-mentioned, can be indicated by the transmission of configuration information configuring and send DCI to UE UE receives DCI in the imperfect subframe of the unauthorized frequency range that cell takies, and then obtains according to this DCI The user data that cell is transmitted in this imperfect subframe.Thus, the embodiment of the present invention can support that cell exists Carry out user data transmission in the imperfect subframe of the unauthorized frequency range taking, take full advantage of what cell took The imperfect subframe of unauthorized frequency range, improves sub-frame resources utilization rate.

Brief description

Fig. 1 (a) is one of imperfect subframe schematic diagram of unauthorized frequency range of taking of cell；

Fig. 1 (b) is the two of the imperfect subframe schematic diagram of the unauthorized frequency range that cell takies；

The data transmission method flow chart that Fig. 2 provides for the embodiment of the present invention one；

Fig. 3 (a) is for transmitting one of schematic diagram of DCI that can dispatch imperfect subframe in complete subframe；

Fig. 3 (b) can dispatch the two of the schematic diagram of the DCI of imperfect subframe for transmission in complete subframe；

The data transmission method flow chart that Fig. 4 provides for the embodiment of the present invention two；

The data transmission method flow chart that Fig. 5 provides for the embodiment of the present invention three；

The data transmission method flow chart that Fig. 6 provides for the embodiment of the present invention four；

The data transmission method flow chart that Fig. 7 provides for the embodiment of the present invention five；

The data transmission method flow chart that Fig. 8 provides for the embodiment of the present invention six；

The data transmission device structural representation that Fig. 9 provides for the embodiment of the present invention seven；

The data transmission device structural representation that Figure 10 provides for the embodiment of the present invention eight；

The data transmission device structural representation that Figure 11 provides for the embodiment of the present invention nine；

The data transmission device structural representation that Figure 12 provides for the embodiment of the present invention ten.

Detailed description of the invention

In the embodiment of the present invention, indicate that UE obtains cell and accounting for by the Downlink Control Information DCI configuring Unauthorized frequency range imperfect subframe in the user data of transmission, can make full use of that cell takies is non- Authorize the imperfect subframe of frequency range, improve sub-frame resources utilization rate.

Below in conjunction with Figure of description, the embodiment of the present invention is described in further detail.

Embodiment one

In this embodiment one, in the complete subframe of the unauthorized frequency range taking, send DCI to UE, The DCI sending in complete subframe is used to dispatch imperfect subframe.

As in figure 2 it is shown, the data transmission method flow chart providing for the embodiment of the present invention one, including following step Rapid:

S201: be user equipment (User Equipment, UE) configurating downlink control information (Downlink Control Information, DCI)；Described DCI is for indicating that this UE obtains cell and non-awards take The user data of transmission in the imperfect subframe of power frequency range.

The executive agent of the embodiment of the present invention one is network equipment, is specifically as follows base station (or claiming cell).

S202: in the complete subframe of the unauthorized frequency range taking, sends described in configuration to described UE DCI, and transmit user data to described UE in the imperfect subframe of described DCI instruction.

In this embodiment one, transmitting DCI in complete subframe, this DCI can be the of complete subframe Transmit on 1～3 (Orthogonal Frequency Division Multiplexing, OFDM) symbol.Should DCI in addition to the complete subframe that can dispatch place own, can also dispatch adjacent with this complete subframe, Imperfect subframe before or after this complete subframe；Here, by adjacent with this complete subframe, Imperfect subframe before this complete subframe is referred to as the first imperfect subframe, by adjacent with this complete subframe, Imperfect subframe after this complete subframe is referred to as the second imperfect subframe.Such as Fig. 3 (a) and (b) institute Show, in reality is implemented, 2 bits (bit) indicating bit can be used to indicate this in the DCI of transmission Subframe scheduled in DCI, such as, uses indicating bit 0 to identify the first imperfect subframe, uses indicating bit The 1 complete subframe identifying this DCI place, uses indicating bit 2 to identify the second imperfect subframe.

In specific implementation process, if the subframe scheduled in this DCI includes the first imperfect subframe, then to institute Before stating the described DCI that UE sends configuration, use to described UE transmission in described first imperfect subframe User data；And/or, if the subframe scheduled in this DCI includes the described second imperfect subframe, then to described After UE sends the described DCI of configuration, in described second imperfect subframe, transmit user to described UE Data.

Include the situation of the first imperfect subframe for the subframe scheduled in DCI, relate to following instruction content:

1) by the initial cache location of placeholder instruction:

Here, placeholder comprises the signal for busy channel, synchronizing signal etc. can also be comprised, as follows Described, this placeholder can also comprise the indicating bit indicating the time location of this placeholder end of transmission.

Owing in this first imperfect subframe, transmission user data occurs before transmission DCI, therefore, UE needs to be buffered in all data receiving before receiving DCI, here, all data of UE caching In addition to including user data, it is also possible to include other non-user data such as synchronizing signal, auxiliary information.? After receiving this DCI, then based on this DCI, go out, from all extracting data of caching, the number of users needing According to.In order to realize receiving the data buffer storage before DCI, UE needs to know which of this imperfect subframe Individual character position starts caching.Based on this, in being embodied as, before UE sends this DCI, also wrap Include: in described first imperfect subframe, send placeholder to described UE；Wherein, described placeholder wraps Indicating bit containing the time location indicating this placeholder end of transmission, for indicating what described UE caching received Owning from the time location of this placeholder end of transmission to the end position of this first imperfect subframe Data, and based on the described DCI of receipt of subsequent, go out described user data from all extracting data of caching.

2) in DCI instruction transmission user data start time position:

UE cached in the first imperfect subframe receive all data after, need know this first The start time position of transmission user data in imperfect subframe, and end time position or transmission number of users According to OFDM symbol number.The instruction of start time position is first described here: specifically, can be at DCI Middle increase fractional_subframe_datasymb_position field, come dominant this UE of instruction this The start time position of transmission user data in one imperfect subframe.

Alternatively, this start time position also can be default position.

In being embodied as, can in advance the time span of available imperfect subframe be defined, only Have when the time span of imperfect subframe is more than preset value, just utilize this imperfect sub-frame transmission user data. In such a case, it is possible to transmit the start time position of user data in being preset in this imperfect subframe, than As the start time position of Preset Transfer user data is separated by L1 for the end position with this imperfect subframe The character position of individual OFDM symbol, or, the start time position of Preset Transfer user data is for from opening The M1 OFDM symbol that the OFDM symbol of transmission placeholder that begins rises.

3) in DCI instruction transmission user data OFDM symbol number:

2) in it is stated that, UE cached in the first imperfect subframe receive all data after, In addition to the start time position at transmission user data in this first imperfect subframe, in addition it is also necessary to know that transmission is used The end time position of user data or OFDM symbol number, preferably indicate the mode of OFDM symbol number here.

In specific implementation process, dominant in DCI can indicate the OFDM number transmitting user data, In described DCI, i.e. comprise instruction in this first imperfect subframe, transmit the orthogonal frequency division multiplexing of user data By the information of OFDM symbol number, in DCI, such as increase fractional_subframe_datasymb_num Field, indicates the OFDM number of transmission user data；Also recessive instruction user data can be transmitted OFDM number, the OFDM symbol number such as transmitting user data in this first imperfect subframe is 14-d1, D1 is for transmitting the start time position of user data in this first imperfect subframe；Can also will transmit user The OFDM number of data is set to default value N.

In specific implementation process, existing cell specific reference signal (Cell-specific can be reused Reference signals, CRS) pattern (pattern), i.e. the 1st, the 5th, the 8th, 12 OFDM in subframe CRS is sent so that UE demodulates, based on this CRS, the DCI receiving on symbol.

Embodiment two

In this embodiment two, in the imperfect subframe sending user data, send corresponding DCI, also The DCI i.e. using transmission in the imperfect subframe of the unauthorized frequency range taking dispatches the user of this subframe Data.Here, imperfect subframe type includes the imperfect subframe such as Fig. 1 (a) shown type (this is not complete The original position of whole subframe is the non-boundary position of the complete subframe belonging to this imperfect subframe, corresponding embodiment The first imperfect subframe in one), and such as imperfect subframe (this imperfect son of Fig. 1 (b) shown type The end position of frame is the non-boundary position of the complete subframe belonging to this imperfect subframe, in corresponding embodiment one The second imperfect subframe).

As shown in Figure 4, the data transmission method flow chart providing for the embodiment of the present invention two, including following step Rapid:

S401: configure DCI for UE；Described DCI is for indicating that this UE obtains cell and non-awards take The user data of transmission in the imperfect subframe of power frequency range.

S402: in described imperfect subframe, sends the described DCI of configuration to described UE, and described User data is transmitted to described UE in the imperfect subframe of DCI instruction.

For such as the imperfect subframe of Fig. 1 (a) shown type, relate to herein below:

Alternatively, based on the start time position sending described DCI, cell CRS is sent, so that described The DCI that UE receives based on described CRS demodulation.

In specific implementation process, existing CRS pattern is the 1st, the 5th, the 8th, 12 OFDM in subframe Send CRS on symbol, and in the imperfect subframe of this type, send the start time position of DCI It is not the boundary position of subframe, namely can't be conventionally in the 1st～3 OFDM symbol Send DCI, therefore, in order to ensure the correct demodulation of DCI, need to the initial time position sending CRS Put in the enterprising line displacement of time domain so that send the start time position (namely OFDM symbol position) of CRS Keep consistent with the start time position sending DCI.

The embodiment of the present invention two relate to following instruction content:

1) start time position by placeholder instruction transmission DCI；

Here, placeholder comprises the signal for busy channel, synchronizing signal etc. can also be comprised, as follows Described, this placeholder can also comprise the indicating bit of the start time position of instruction transmission DCI.

Specifically, send the DCI of configuration to described UE before, also include:

In being embodied as, the placeholder of Nbit can be used to carry out dominant instruction and to transmit in this imperfect subframe The start time position of DCI.

Alternatively, this start time position also can be default position.

In being embodied as, can in advance the time span of available imperfect subframe be defined, only Have when the time span of imperfect subframe is more than preset value, just utilize this imperfect sub-frame transmission user data. In such a case, it is possible to the start time position of Preset Transfer DCI, such as, Preset Transfer DCI's Start time position is the character position that the end position with this imperfect subframe is separated by L2 OFDM symbol, Or, the start time position of Preset Transfer DCI is for from the OFDM symbol starting transmission placeholder The M2 OFDM symbol.

2) the OFDM symbol number by control format indicating bit CFI instruction transmission DCI；

Here, transmission is indicated by control format indicating bit (Control Format Indicatior, CFI) The OFDM symbol number of described DCI.

3) in DCI instruction transmission user data OFDM symbol number:

In specific implementation process, both dominant in DCI can indicate the OFDM number transmitting user data, In described DCI, i.e. comprise the OFDM symbol number of instruction transmission user data in this imperfect subframe Information, such as increases fractional_subframe_datasymb_num field in DCI, indicates biography The OFDM number of defeated user data；Also recessive can indicate the OFDM number transmitting user data, such as exist In this first imperfect subframe, the OFDM symbol number of transmission user data is 14-d2-P, and d2 is described for sending The start time position of DCI, P (should for the OFDM symbol number transmitting DCI in described imperfect subframe The OFDM symbol number of transmission DCI can indicate in control format indicating bit CFI, it is also possible to is default OFDM symbol number)；The OFDM number of transmission user data can also be set to default value N.

Alternatively, if to the OFDM symbol number of described UE transmission user data in described imperfect subframe For default value N, then the OFDM symbol number transmitting DCI in described imperfect subframe can recessiveness refer to It is shown as 14-d2-N.

For such as the imperfect subframe of Fig. 1 (b) shown type, relate to herein below:

1) the OFDM symbol number by control format indicating bit CFI instruction transmission DCI；

Here, owing to the original position of such imperfect subframe is exactly the initial of complete subframe belonging to it Boundary position, therefore, the start time position sending DCI can be with the initial time sending tradition DCI Position is identical, is the beginning boundary position of subframe.

3) in DCI instruction transmission user data OFDM symbol number:

Here it is possible in DCI, the OFDM number of user data is transmitted in dominant instruction, i.e. at described DCI In comprise the information of OFDM symbol number that user data is transmitted in instruction in this imperfect subframe, such as exist DCI increases fractional_subframe_datasymb_num field, indicates transmission user data OFDM number；Also the OFDM number of transmission user data can be set to default value N.

Embodiment three

The corresponding above-described embodiment one of following example three, is the step of UE side.It is embodied as seeing State the description of embodiment one, repeat no more here.

As it is shown in figure 5, the data transmission method flow chart providing for the embodiment of the present invention three, including following step Rapid:

S501: receive the DCI that cell sends in the complete subframe of the unauthorized frequency range taking；

S502: based on described DCI, obtains cell and transmits in the imperfect subframe of the unauthorized frequency range taking User data.

Alternatively, before receiving the DCI that cell sends, also include:

Embodiment four

The corresponding above-described embodiment two of following example four, is the step of UE side.It is embodied as seeing State the description of embodiment two, repeat no more here.

As shown in Figure 6, the data transmission method flow chart providing for the embodiment of the present invention four, including following step Rapid:

S601: receive the DCI that cell sends in the imperfect subframe of the unauthorized frequency range taking.

S602: based on described DCI, receive the user data that cell is transmitted in described imperfect subframe.

Alternatively, described method also includes:

The DCI receiving based on described CRS demodulation.

Alternatively, before receiving described DCI, also include:

Embodiment five

The first, above-described embodiment describes the DCI supporting to carry out user data transmission in imperfect subframe in two Configuration and transmission process, including carrying out DCI transmission in imperfect subframe and enter in complete subframe Row DCI transmits two kinds of situations.Carry out DCI biography in the imperfect subframe at Fig. 1 (a) shown type Defeated this situation, compares conventional transmission mode, in addition to needing to change the instruction content that DCI itself comprises, Also need to change the transmission of configuration information of DCI, and meta during the transmission of cell specific reference signal CRS Put.It is described further below by embodiment three.In following example, embodiment five is for based on network side The description of equipment side, embodiment six is corresponding UE side method flow.

As it is shown in fig. 7, the data transmission method flow chart providing for the embodiment of the present invention five, including following step Rapid:

S701: for the transmission of configuration information of user equipment (UE) configurating downlink control information DCI；Described DCI For indicating that this UE receives the user data that cell is transmitted in the imperfect subframe of the unauthorized frequency range taking； Described transmission of configuration information includes that cell sends the start time position of described DCI in this imperfect subframe；

S702: described transmission of configuration information is sent to described UE, and based on the transmission configuration of described DCI Information, sends described DCI in the imperfect subframe of the unauthorized frequency range taking.

Alternatively, described method also includes:

In specific implementation process, existing CRS pattern is the 1st, the 5th, the 8th, 12 OFDM in subframe CRS is sent on symbol.It in this embodiment five, is not son owing to sending the start time position of DCI The boundary position of frame, namely DCI can't conventionally in the 1st～3 OFDM symbol send, Therefore, in order to ensure the correct demodulation of DCI, need the start time position to transmission CRS in time domain Enter line displacement so that send start time position (namely OFDM symbol position) and the transmission DCI of CRS Start time position keep consistent.

In specific implementation process, this transmission of configuration information is except including that cell sends in this imperfect subframe Outside the start time position of described DCI, also include cell send described DCI OFDM symbol number (or End time position).

In specific implementation process, the detailed process to the transmission of configuration information of UE transmission DCI may is that For the described start time position in transmission of configuration information, can be in this imperfect subframe, to described UE sends the placeholder of the indicating bit carrying instruction start time position.For in transmission of configuration information OFDM symbol number, can be indicated by control format indicating bit CFI.It is discussed in detail and can be found in above-mentioned reality Execute the description of example one～tetra-.

In reality is implemented, when the start time position sending described DCI in this imperfect subframe and When OFDM symbol number is to use the mode preset to specify, then do not need the embodiment of the present invention sends to UE The step of the transmission of configuration information of DCI.

Embodiment six

As shown in Figure 8, the data transmission method flow chart providing for the embodiment of the present invention six, including following step Rapid:

S801: receive the transmission of configuration information of the Downlink Control Information DCI that base station sends；Described DCI uses In the user data indicating that this UE reception cell is transmitted in the imperfect subframe of the unauthorized frequency range taking； Described transmission of configuration information includes the initial time position sending described DCI in cell in this imperfect subframe Put；

S802: based on the transmission of configuration information of described DCI, receives cell in the unauthorized frequency range taking not The described DCI sending in complete subframe.

Alternatively, described method also includes:

Based on the described CRS receiving, the described DCI receiving is demodulated.

Based on same inventive concept, the embodiment of the present invention additionally provides the corresponding data with data transmission method Transmitting device, owing to the principle of this device solution problem is similar to embodiment of the present invention data transmission method, because of The enforcement of this this device may refer to the enforcement of method, repeats no more in place of repetition.

Embodiment seven

As it is shown in figure 9, the data transmission device structural representation providing for the embodiment of the present invention seven, comprising:

Configuration module 91, is used for as user equipment (UE) configurating downlink control information DCI；Described DCI is used for Indicate that this UE obtains the user data that cell is transmitted in the imperfect subframe of the unauthorized frequency range taking；

Sending module 92, for the described DCI to described UE transmission configuration, and in described DCI instruction User data is transmitted to described UE in imperfect subframe.

Alternatively, described sending module 92 specifically for:

Alternatively, if the subframe scheduled in this DCI includes the described first imperfect subframe；Then described transmission mould Block is additionally operable to, before send the described DCI of configuration to described UE, in described first imperfect subframe Send placeholder to described UE；

Alternatively, described sending module 92 specifically for:

Alternatively, described sending module 92 is additionally operable to:

Alternatively, described sending module 92 is additionally operable to, before described UE sends the DCI of configuration, In described imperfect subframe, send placeholder to described UE, described placeholder comprises instruction transmission described The indicating bit of the start time position of DCI.

Alternatively, described DCI comprises instruction in described imperfect subframe, transmits the orthogonal frequency of user data Divide the information of multiplexing OFDM symbol number；Or, in described imperfect subframe, transmit user to described UE The OFDM symbol number of data is 14-d2-P, d2 for sending the start time position of described DCI, P for The OFDM symbol number transmitting DCI in described imperfect subframe of instruction in control format indicating bit CFI； Or, in described imperfect subframe, the OFDM symbol number to described UE transmission user data is present count Value.

Embodiment eight

As shown in Figure 10, the data transmission device structural representation providing for the embodiment of the present invention eight, comprising:

Receiver module 101, for receiving the Downlink Control Information DCI that cell sends；

Acquisition module 102, for based on described DCI, obtains not complete in the unauthorized frequency range taking of cell The user data of transmission in whole subframe.

Alternatively, described receiver module 101 specifically for:

Alternatively, described acquisition module 102 specifically for:

Alternatively, described acquisition module 102 specifically for: receive cell send DCI before, receive The placeholder that cell sends in described first imperfect subframe；Wherein, comprising instruction in described placeholder should The indicating bit of the time location of the placeholder end of transmission；The time from this placeholder end of transmission that caching receives Position is to all data between the end position of described first imperfect subframe.

Alternatively, described receiver module 101 specifically for:

Receive the DCI that cell sends in described imperfect subframe.

Alternatively, described acquisition module 102 specifically for:

Alternatively, described receiver module 101 is additionally operable to:

Send the start time position of described DCI based on cell, receive cell specific reference signal CRS； The DCI receiving based on described CRS demodulation.

Alternatively, described receiver module 101 is additionally operable to, and before receiving described DCI, receives cell described The placeholder sending in imperfect subframe, comprises the start time position of instruction transmission DCI in described placeholder Indicating bit.

Embodiment nine

As shown in figure 11, the data transmission device structural representation providing for the embodiment of the present invention nine, comprising:

Configuration module 111, for the transmission configuration letter for user equipment (UE) configurating downlink control information DCI Breath；Described DCI is for indicating that this UE receives cell and passes in the imperfect subframe of the unauthorized frequency range taking Defeated user data；Described transmission of configuration information includes that cell sends described DCI in this imperfect subframe Start time position；

Sending module 112, is used for being sent to described transmission of configuration information described UE, and based on described DCI Transmission of configuration information, in the imperfect subframe of the unauthorized frequency range taking, send described DCI.

Alternatively, described sending module 112 is additionally operable to:

Alternatively, described sending module 112 specifically for:

Alternatively, described transmission of configuration information also includes the orthogonal frequency division multiplex OFDM sending described DCI Symbolic number；

Described sending module 112 specifically for:

Sent the OFDM symbol number of described DCI by control format indicating bit CFI instruction.

Embodiment ten

As shown in figure 12, the data transmission device structural representation providing for the embodiment of the present invention ten, comprising:

First receiver module 121, for receiving the transmission configuration letter of the Downlink Control Information DCI that base station sends Breath；Described DCI is for indicating that this UE receives cell and passes in the imperfect subframe of the unauthorized frequency range taking Defeated user data；Described transmission of configuration information includes sending described DCI in cell in this imperfect subframe Start time position；

Second receiver module 122, for the transmission of configuration information based on described DCI, receives cell and is taking Unauthorized frequency range imperfect subframe in send described DCI.

Alternatively, described second receiver module 122 is additionally operable to:

Send the start time position of described DCI based on cell, receive cell specific reference signal CRS； Based on the described CRS receiving, the described DCI receiving is demodulated.

Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter Calculation machine program product.Therefore, the present invention can use complete hardware embodiment, complete software implementation or knot The form of the embodiment in terms of closing software and hardware.And, the present invention can use and wherein wrap one or more Computer-usable storage medium containing computer usable program code (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) form of the upper computer program implemented.

The present invention is with reference to method according to embodiments of the present invention, device (system) and computer program product The flow chart of product and/or block diagram describe.It should be understood that can by computer program instructions flowchart and / or block diagram in each flow process and/or the flow process in square frame and flow chart and/or block diagram and/ Or the combination of square frame.These computer program instructions can be provided to all-purpose computer, special-purpose computer, embed The processor of formula processor or other programmable data processing device is to produce a machine so that by calculating The instruction that the processor of machine or other programmable data processing device performs produces for realizing at flow chart one The device of the function specified in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.

These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set In the standby computer-readable memory working in a specific way so that be stored in this computer-readable memory Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart The function specified in flow process and/or one square frame of block diagram or multiple square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, makes Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices Reason, thus the instruction performing on computer or other programmable devices provides for realizing flow chart one The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.

Although preferred embodiments of the present invention have been described, but those skilled in the art once know base This creativeness concept, then can make other change and modification to these embodiments.So, appended right is wanted Ask all changes and the modification being intended to be construed to include preferred embodiment and fall into the scope of the invention.

Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention Bright spirit and scope.So, if the present invention these modification and modification belong to the claims in the present invention and Within the scope of its equivalent technologies, then the present invention is also intended to comprise these changes and modification.

Claims

1. a data transmission method, it is characterised in that the method includes:

2. the method for claim 1, it is characterised in that send described in configuration to described UE DCI, comprising:

3. method as claimed in claim 2, it is characterised in that comprise in described DCI to indicate this DCI The information of scheduled subframe, wherein, the subframe scheduled in this DCI includes the complete sub of this DCI place Frame, and the first imperfect subframe adjacent with the complete subframe at this DCI place and/or the second imperfect son Frame；Wherein, described first imperfect subframe is the subframe before the complete subframe at this DCI place, described Second imperfect subframe is the subframe after the complete subframe at this DCI place.

4. method as claimed in claim 3, it is characterised in that send described in configuration to described UE DCI, and transmit user data to described UE in the imperfect subframe of described DCI instruction, comprising:

5. the method as described in claim 3 or 4, it is characterised in that if the subframe scheduled in this DCI Including described first imperfect subframe；Then send the described DCI of configuration to described UE before, also include:

Send placeholder to described UE in described first imperfect subframe；

6. method as claimed in claim 5, it is characterised in that also comprise instruction in described DCI at this The information of the start time position of transmission user data in first imperfect subframe.

7. method as claimed in claim 5, it is characterised in that also comprise instruction in described DCI at this The information of the orthogonal frequency division multiplex OFDM symbolic number of transmission user data in first imperfect subframe；Or, In this first imperfect subframe transmit user data OFDM symbol number be 14-d1, d1 for this first The start time position of transmission user data in imperfect subframe；Or, pass in this first imperfect subframe The OFDM symbol number of defeated user data is default value.

8. the method as described in claim 3 or 4, it is characterised in that if the subframe scheduled in this DCI Including described second imperfect subframe, then described DCI also comprises instruction and passes in this second imperfect subframe The information of the orthogonal frequency division multiplex OFDM symbolic number of defeated user data；Or, at this second imperfect son In frame, the OFDM symbol number of transmission user data is default value.

9. the method for claim 1, it is characterised in that send described in configuration to described UE DCI, comprising:

10. method as claimed in claim 9, it is characterised in that described method also includes:

11. methods as claimed in claim 9, it is characterised in that send the DCI of configuration to described UE Before, also include:

12. methods as claimed in claim 9, it is characterised in that comprise in described DCI to indicate described The information of the orthogonal frequency division multiplex OFDM symbolic number of transmission user data in imperfect subframe；Or, In described imperfect subframe, the OFDM symbol number to described UE transmission user data is 14-d2-P, and d2 is Sending the start time position of described DCI, P is for transmitting the OFDM of DCI in described imperfect subframe Symbolic number；Or, to the OFDM symbol number of described UE transmission user data in described imperfect subframe For default value.

13. methods as claimed in claim 12, it is characterised in that if in described imperfect subframe to The OFDM symbol number of described UE transmission user data is default value N, then in described imperfect subframe The OFDM symbol number of transmission DCI is 14-d2-N.

14. 1 kinds of data transmission methods, it is characterised in that the method includes:

Receive the Downlink Control Information DCI that cell sends；

15. methods as claimed in claim 14, it is characterised in that receive the DCI that cell sends, bag Include:

16. methods as claimed in claim 15, it is characterised in that comprise in described DCI to indicate this DCI The information of scheduled subframe, wherein, the subframe scheduled in this DCI includes the complete sub of this DCI place Frame, and the first imperfect subframe adjacent with the complete subframe at this DCI place and/or the second imperfect son Frame；Wherein, described first imperfect subframe is the subframe before the complete subframe at this DCI place, described Second imperfect subframe is the subframe after the complete subframe at this DCI place.

17. methods as claimed in claim 16, it is characterised in that based on described DCI, obtain cell The user data of transmission in the imperfect subframe of the unauthorized frequency range taking, comprising:

18. methods as claimed in claim 17, it is characterised in that before receiving the DCI that cell sends, Also include:

19. methods as claimed in claim 14, it is characterised in that receive the DCI that cell sends, bag Include:

Receive the DCI that cell sends in described imperfect subframe.

20. methods as claimed in claim 19, it is characterised in that obtain cell at described imperfect son The user data of transmission in frame, comprising:

21. methods as claimed in claim 19, it is characterised in that described method also includes:

The DCI receiving based on described CRS demodulation.

22. methods as claimed in claim 19, it is characterised in that before receiving described DCI, also wrap Include:

23. 1 kinds of data transmission devices, it is characterised in that this device includes:

24. devices as claimed in claim 23, it is characterised in that described sending module specifically for:

25. devices as claimed in claim 24, it is characterised in that comprise in described DCI to indicate this DCI The information of scheduled subframe, wherein, the subframe scheduled in this DCI includes the complete sub of this DCI place Frame, and the first imperfect subframe adjacent with the complete subframe at this DCI place and/or the second imperfect son Frame；Wherein, described first imperfect subframe is the subframe before the complete subframe at this DCI place, described Second imperfect subframe is the subframe after the complete subframe at this DCI place.

26. devices as claimed in claim 25, it is characterised in that described sending module specifically for:

27. devices as described in claim 25 or 26, it is characterised in that if the son scheduled in this DCI Frame includes the described first imperfect subframe；Then described sending module is additionally operable to, and is sending configuration to described UE Described DCI before, in described first imperfect subframe to described UE send placeholder；

28. devices as claimed in claim 27, it is characterised in that also comprise in described DCI to indicate The information of the start time position of transmission user data in this first imperfect subframe.

29. devices as claimed in claim 27, it is characterised in that also comprise in described DCI to indicate The information of the orthogonal frequency division multiplex OFDM symbolic number of transmission user data in this first imperfect subframe；Or Person, the OFDM symbol number transmitting user data in this first imperfect subframe is 14-d1, and d1 is at this The start time position of transmission user data in first imperfect subframe；Or, in this first imperfect subframe The OFDM symbol number of interior transmission user data is default value.

30. devices as described in claim 25 or 26, it is characterised in that if the son scheduled in this DCI Frame includes the described second imperfect subframe, then also comprise instruction in described DCI in this second imperfect subframe The information of the orthogonal frequency division multiplex OFDM symbolic number of transmission user data；Or, second imperfect at this In subframe, the OFDM symbol number of transmission user data is default value.

31. devices as claimed in claim 23, it is characterised in that described sending module specifically for:

32. devices as claimed in claim 31, it is characterised in that described sending module is additionally operable to:

33. devices as claimed in claim 31, it is characterised in that described sending module is additionally operable to, to Before described UE sends the DCI of configuration, in described imperfect subframe, send placeholder to described UE, Described placeholder comprises the indicating bit of the start time position of the described DCI of instruction transmission.

34. devices as claimed in claim 31, it is characterised in that comprise instruction in described DCI in institute The information of the orthogonal frequency division multiplex OFDM symbolic number of user data is transmitted in stating imperfect subframe；Or, In described imperfect subframe, the OFDM symbol number to described UE transmission user data is 14-d2-P, d2 For sending the start time position of described DCI, P is for transmitting the OFDM of DCI in described imperfect subframe Symbolic number；Or, to the OFDM symbol number of described UE transmission user data in described imperfect subframe For default value.

35. devices as claimed in claim 34, it is characterised in that if in described imperfect subframe to The OFDM symbol number of described UE transmission user data is default value N, then in described imperfect subframe The OFDM symbol number of transmission DCI is 14-d2-N.

36. 1 kinds of data transmission devices, it is characterised in that this device includes:

37. devices as claimed in claim 36, it is characterised in that described receiver module specifically for:

38. devices as claimed in claim 37, it is characterised in that comprise in described DCI to indicate this DCI The information of scheduled subframe, wherein, the subframe scheduled in this DCI includes the complete sub of this DCI place Frame, and the first imperfect subframe adjacent with the complete subframe at this DCI place and/or the second imperfect son Frame；Wherein, described first imperfect subframe is the subframe before the complete subframe at this DCI place, described Second imperfect subframe is the subframe after the complete subframe at this DCI place.

39. devices as claimed in claim 38, it is characterised in that described acquisition module specifically for:

40. devices as claimed in claim 39, it is characterised in that described acquisition module specifically for: Before receiving the DCI that cell sends, receive the placeholder that cell sends in described first imperfect subframe； Wherein, described placeholder comprises the indicating bit indicating the time location of this placeholder end of transmission；Caching connects Receive from the time location of this placeholder end of transmission to the end position of described first imperfect subframe All data.

41. devices as claimed in claim 36, it is characterised in that described receiver module specifically for:

Receive the DCI that cell sends in described imperfect subframe.

42. devices as claimed in claim 41, it is characterised in that described acquisition module specifically for:

43. devices as claimed in claim 41, it is characterised in that described receiver module is additionally operable to:

44. devices as claimed in claim 41, it is characterised in that described receiver module is additionally operable to, and connects Before receiving described DCI, receive the placeholder that cell sends in described imperfect subframe, in described placeholder Comprise the indicating bit of the start time position of instruction transmission DCI.

45. 1 kinds of data transmission methods, it is characterised in that the method includes:

46. methods as claimed in claim 45, it is characterised in that described method also includes:

47. methods as claimed in claim 45, it is characterised in that described transmission of configuration information is sent To described UE, comprising:

48. methods as claimed in claim 45, it is characterised in that described transmission of configuration information also includes Send the orthogonal frequency division multiplex OFDM symbolic number of described DCI；

Send the transmission of configuration information of Downlink Control Information DCI to user equipment (UE), comprising:

49. 1 kinds of data transmission methods, it is characterised in that the method includes:

50. methods as claimed in claim 49, it is characterised in that described method also includes:

51. 1 kinds of data transmission devices, it is characterised in that this device includes:

52. devices as claimed in claim 51, it is characterised in that described sending module is additionally operable to:

53. devices as claimed in claim 51, it is characterised in that described sending module specifically for:

54. devices as claimed in claim 51, it is characterised in that described transmission of configuration information also includes Send the orthogonal frequency division multiplex OFDM symbolic number of described DCI；

Described sending module specifically for:

55. 1 kinds of data transmission devices, it is characterised in that this device includes:

56. devices as claimed in claim 55, it is characterised in that described second receiver module is additionally operable to: