WO2016150224A1 - 一种数据传输方法及装置 - Google Patents
一种数据传输方法及装置 Download PDFInfo
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- WO2016150224A1 WO2016150224A1 PCT/CN2015/099741 CN2015099741W WO2016150224A1 WO 2016150224 A1 WO2016150224 A1 WO 2016150224A1 CN 2015099741 W CN2015099741 W CN 2015099741W WO 2016150224 A1 WO2016150224 A1 WO 2016150224A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
Definitions
- the present disclosure relates to the field of wireless communication technologies, and in particular, to a data transmission method and apparatus.
- LAA License-assisted access
- LBT listen before talk
- CCA Clear Channel Assessment
- the minimum scheduling unit of the LTE system is one subframe (1 ms), so in the existing LTE system, the control channels are all designed for the complete subframe.
- the first one to three Orthogonal Frequency Division Multiplexing (OFDM) symbols of each subframe are used for performing Physical Downlink Control Channel (PDCCH) transmission.
- the CCA can occur at any time in the subframe, and the duration is at least 20us. Therefore, the introduction of CCA will bring incomplete subframe problems.
- the cell contends for the time position of the available carrier through the CCA process, and is not a subframe boundary. At this time, the cell needs to start transmission of control information and data in the incomplete subframe.
- the subframe in which the data transmission is finally performed may also be an incomplete subframe, as shown in FIG. 1(b).
- the transmission method in the related art does not support data transmission on an incomplete subframe of an unlicensed band.
- Some embodiments of the present disclosure provide a data transmission method and apparatus for solving the problem that an existing transmission method does not support data transmission on an incomplete subframe of an unlicensed frequency band.
- Some embodiments of the present disclosure provide a data transmission method, including:
- DCI Downlink control information
- the DCI is used to indicate that the UE acquires user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band;
- sending the configured DCI to the UE includes:
- the configured DCI is transmitted to the UE within a complete subframe of the occupied unlicensed band.
- the DCI includes information indicating a subframe scheduled by the DCI, where the subframe scheduled by the DCI includes a complete subframe where the DCI is located, and is adjacent to a complete subframe where the DCI is located. a first incomplete subframe and/or a second incomplete subframe; wherein the first incomplete subframe is a subframe before a complete subframe in which the DCI is located, and the second incomplete subframe is in The subframe after the complete subframe in which the DCI is located.
- the configured DCI is sent to the UE, and the user data is transmitted to the UE in the incomplete subframe indicated by the DCI, including:
- the subframe scheduled by the DCI includes the first incomplete subframe, before transmitting the configured DCI to the UE, transmitting user data to the UE in the first incomplete subframe; and/ or,
- the subframe scheduled by the DCI includes the second incomplete subframe, after transmitting the configured DCI to the UE, transmitting user data to the UE in the second incomplete subframe.
- the method further includes:
- the placeholder includes an indication bit indicating a time position of the end of the placeholder transmission, and is used to indicate that the UE buffers the received time position from the end of the placeholder transmission to the first incomplete subframe. All data between the end positions, and based on the DCI received subsequently, the user data is extracted from all the cached data.
- the DCI further includes information indicating a start time position of transmitting user data in the first incomplete subframe.
- the DCI further includes information indicating the number of orthogonal frequency division multiplexing OFDM symbols for transmitting user data in the first incomplete subframe; or transmitting user data in the first incomplete subframe.
- the number of OFDM symbols is 14-d1, and d1 is a start time position for transmitting user data in the first incomplete subframe; or, the number of OFDM symbols for transmitting user data in the first incomplete subframe is preset Value.
- the DCI further includes an orthogonal frequency division multiplexing OFDM indicating that user data is transmitted in the second incomplete subframe.
- the information of the number of symbols; or the number of OFDM symbols for transmitting user data in the second incomplete subframe is a preset value.
- sending the configured DCI to the UE includes:
- the method further includes:
- a cell-specific reference signal CRS is transmitted based on a start time position at which the DCI is transmitted, to cause the UE to demodulate the received DCI based on the CRS.
- the method before sending the configured DCI to the UE, the method further includes:
- a placeholder is transmitted to the UE, the placeholder including an indication bit indicating a start time position of transmitting the DCI.
- the DCI includes information indicating the number of orthogonal frequency division multiplexing OFDM symbols for transmitting user data in the incomplete subframe; or transmitting user data to the UE in the incomplete subframe.
- the number of OFDM symbols is 14-d2-P, d2 is the start time position of transmitting the DCI, P is the number of OFDM symbols transmitting DCI in the incomplete subframe; or, in the incomplete subframe
- the UE The number of OFDM symbols for transmitting user data is a preset value.
- the number of OFDM symbols for transmitting user data to the UE in the incomplete subframe is a preset value N
- the number of OFDM symbols for transmitting DCI in the incomplete subframe is 14-d2-N.
- receiving the DCI sent by the cell includes:
- the DCI transmitted by the receiving cell in the complete subframe of the occupied unlicensed band is the DCI transmitted by the receiving cell in the complete subframe of the occupied unlicensed band.
- the DCI includes information indicating a subframe scheduled by the DCI, where the subframe scheduled by the DCI includes a complete subframe where the DCI is located, and is adjacent to a complete subframe where the DCI is located. a first incomplete subframe and/or a second incomplete subframe; wherein the first incomplete subframe is a subframe before a complete subframe in which the DCI is located, and the second incomplete subframe is in The subframe after the complete subframe in which the DCI is located.
- acquiring user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band including:
- the method before receiving the DCI sent by the cell, the method further includes:
- receiving the DCI sent by the cell includes:
- acquiring user data that is transmitted by the cell in the incomplete subframe including:
- the method further includes:
- the received DCI is demodulated based on the CRS.
- the method before receiving the DCI, the method further includes:
- Some embodiments of the present disclosure provide a data transmission apparatus, including:
- a configuration module configured to configure downlink control information DCI for the user equipment UE, where the DCI is used to indicate that the UE acquires user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band;
- a sending module configured to send the configured DCI to the UE, and transmit user data to the UE in an incomplete subframe indicated by the DCI.
- Some embodiments of the present disclosure provide a data transmission apparatus, including:
- a receiving module configured to receive downlink control information DCI sent by the cell
- an obtaining module configured to acquire, according to the DCI, user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed band.
- Some embodiments of the present disclosure provide a data transmission method, including:
- the DCI is used to indicate that the UE receives user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band;
- the transmission configuration information includes the cell in the Sending the start time position of the DCI in an incomplete subframe;
- Some embodiments of the present disclosure provide a data transmission method, including:
- the DCI is used to indicate that the UE receives user data transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band; the transmission configuration information is included in the cell Sending the start time position of the DCI in an incomplete subframe;
- Some embodiments of the present disclosure provide a data transmission apparatus, including:
- a configuration module configured to configure, for the user equipment UE, transmission configuration information of the downlink control information DCI; the DCI is used to indicate that the UE receives user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band; the transmission configuration The information includes a start time position at which the cell sends the DCI in the incomplete subframe;
- a sending module configured to send the transmission configuration information to the UE, and send the DCI in an incomplete subframe of the occupied unlicensed frequency band based on the transmission configuration information of the DCI.
- Some embodiments of the present disclosure provide a data transmission apparatus, including:
- the first receiving module is configured to receive transmission configuration information of the downlink control information DCI sent by the base station, where the DCI is used to indicate that the UE receives user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band;
- the configuration information includes a start time position at which the cell sends the DCI in the incomplete subframe;
- the second receiving module is configured to receive, according to the transmission configuration information of the DCI, the DCI sent by the cell in an incomplete subframe of the occupied unlicensed frequency band.
- the downlink control information DCI may be configured and sent to the UE to instruct the UE to acquire user data transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band.
- the UE may be configured to send the DCI transmission configuration information to the UE to indicate that the UE receives the DCI in the incomplete subframe of the unlicensed frequency band occupied by the cell, and then acquires the cell according to the DCI in the incomplete sub-frame. User data transmitted within the frame.
- some embodiments of the present disclosure may support the user to perform user data transmission in an incomplete subframe of the occupied unlicensed frequency band, fully utilize the incomplete subframe of the unlicensed frequency band occupied by the cell, and improve the utilization of the subframe resource.
- FIG. 1(a) is a schematic diagram of an incomplete subframe of an unlicensed frequency band occupied by a cell
- FIG. 1(b) is a second schematic diagram of an incomplete subframe of an unlicensed frequency band occupied by a cell
- FIG. 3(a) is a schematic diagram of transmitting DCI capable of scheduling an incomplete subframe in a complete subframe
- FIG. 3(b) is a second schematic diagram of transmitting a DCI capable of scheduling an incomplete subframe in a complete subframe
- FIG. 5 is a flowchart of a data transmission method according to some embodiments of the present disclosure.
- FIG. 6 is a flowchart of a data transmission method according to some embodiments of the present disclosure.
- FIG. 7 is a flowchart of a data transmission method according to some embodiments of the present disclosure.
- FIG. 8 is a flowchart of a data transmission method according to some embodiments of the present disclosure.
- FIG. 9 is a schematic structural diagram of a data transmission apparatus according to some embodiments of the present disclosure.
- FIG. 10 is a schematic structural diagram of a data transmission apparatus according to some embodiments of the present disclosure.
- FIG. 11 is a schematic structural diagram of a data transmission apparatus according to some embodiments of the present disclosure.
- FIG. 12 is a schematic structural diagram of a data transmission apparatus according to some embodiments of the present disclosure.
- the configured downlink control information DCI is used to indicate that the UE acquires user data transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band, and may fully utilize the incomplete sub-band of the unlicensed frequency band occupied by the cell. Frame, improve the utilization of subframe resources.
- the DCI is transmitted to the UE within the complete subframe of the occupied unlicensed band, and the incomplete subframe is scheduled with the DCI transmitted within the complete subframe.
- a flowchart of a data transmission method includes the following steps:
- DCI Configure Downlink Control Information
- UE User Equipment
- the executor of some embodiments of the present disclosure is a network side device, and may specifically be a base station (or a cell).
- S202 Send the configured DCI to the UE in a complete subframe of the occupied unlicensed band. And transmitting user data to the UE within the incomplete subframe indicated by the DCI.
- DCI is transmitted within a complete subframe, which may be transmitted on Orthogonal Frequency Division Multiplexing (OFDM) symbols of a complete subframe.
- OFDM Orthogonal Frequency Division Multiplexing
- the DCI may also schedule an incomplete subframe adjacent to the complete subframe before and/or after the complete subframe; here, the complete subframe will be An adjacent incomplete subframe before the complete subframe is referred to as a first incomplete subframe, and an incomplete subframe adjacent to the complete subframe after the complete subframe is referred to as a second incomplete subframe. Subframe. As shown in FIG.
- a 2-bit indicator bit may be used in the transmitted DCI to indicate the subframe scheduled by the DCI, for example, by using indicator bit 0.
- the first incomplete subframe uses the indicator bit 1 to identify the complete subframe in which the DCI is located, and the indicator bit 2 to identify the second incomplete subframe.
- the user is transmitted to the UE in the first incomplete subframe.
- the case where the subframe scheduled by the DCI includes the first incomplete subframe involves the following indications:
- the placeholder includes a signal for occupying the channel, and may also include a synchronization signal or the like. As described below, the placeholder may further include an indication bit indicating a time position at which the placeholder transmission ends.
- the UE Since the transmission of the user data in the first incomplete subframe occurs before the transmission of the DCI, the UE needs to buffer all the data received before receiving the DCI.
- all the data buffered by the UE may include, in addition to the user data, Synchronous signals, auxiliary information, and other non-user data.
- the required user data is extracted from all the cached data. In order to achieve data buffering before receiving DCI, the UE needs to know which symbol position of the incomplete subframe starts to buffer.
- the method before sending the DCI to the UE, the method further includes: sending a placeholder to the UE in the first incomplete subframe; wherein the placeholder includes the placeholder An indication bit of a time position at which the transmission ends is used to indicate that the UE buffers the received from the placeholder All data between the time position of the end of the transmission to the end position of the first incomplete subframe, and the user data is extracted from all the data of the cache based on the DCI received subsequently.
- the UE After the UE buffers all the data received in the first incomplete subframe, it needs to know the start time position of transmitting the user data in the first incomplete subframe, and the end time position or the number of OFDM symbols transmitting the user data. .
- an indication of the start time position is first described. Specifically, a fractional_subframe_datasymb_position field may be added in the DCI to explicitly indicate the start time position of the UE to transmit user data in the first incomplete subframe.
- the starting time position may also be a preset position.
- the length of the available incomplete subframe may be limited in advance, and the incomplete subframe is used to transmit the user data only when the length of the incomplete subframe is greater than a preset value.
- the start time position of transmitting the user data in the incomplete subframe may be preset, for example, the start time position of the preset transmission user data is L1 from the end position of the incomplete subframe.
- the symbol position of the OFDM symbol, or the start time position of the preset transmission user data is the M1th OFDM symbol from the OFDM symbol from which the placeholder is transmitted.
- the OFDM number of the transmission user data may be explicitly indicated in the DCI, that is, the number of orthogonal frequency division multiplexing OFDM symbols indicating that the user data is transmitted in the first incomplete subframe is included in the DCI.
- the information such as adding a fractional_subframe_datasymb_num field in the DCI to indicate the number of OFDMs for transmitting user data; or implicitly indicating the number of OFDMs for transmitting user data, such as the number of OFDM symbols for transmitting user data in the first incomplete subframe is 14-d1, d1 is a start time position for transmitting user data in the first incomplete subframe; and the OFDM number of the transmission user data may also be set to a preset value N.
- the existing cell-specific reference signal can be reused.
- a pattern of reference signals that is, a CRS is transmitted on the 1, 5, 8, and 12 OFDM symbols of the subframe to enable the UE to demodulate the received DCI based on the CRS.
- the corresponding DCI in the incomplete subframe in which the user data is transmitted, is, the DCI transmitted in the incomplete subframe of the occupied unlicensed band is used to schedule the user data of the subframe.
- the incomplete subframe type includes an incomplete subframe of the type shown in FIG. 1(a) (the starting position of the incomplete subframe is a non-boundary position of the complete subframe to which the incomplete subframe belongs, and the corresponding implementation a first incomplete subframe in the first example), and an incomplete subframe of the type shown in FIG. 1(b) (the end position of the incomplete subframe is a non-boundary of the complete subframe to which the incomplete subframe belongs Position, corresponding to the second incomplete subframe in the first embodiment).
- a flowchart of a data transmission method includes the following steps:
- S401 Configure a DCI for the UE, where the DCI is used to indicate that the UE acquires user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed band.
- S402 Send, in the incomplete subframe, the configured DCI to the UE, and transmit user data to the UE in an incomplete subframe indicated by the DCI.
- the cell CRS is transmitted based on the start time position of sending the DCI, so that the UE demodulates the received DCI based on the CRS.
- the existing CRS pattern is to send a CRS on the 1, 5, 8, and 12 OFDM symbols of the subframe, and in the incomplete subframe of the type, the start time position of the DCI is sent. It is not the boundary position of the subframe, that is, the DCI is not transmitted on the first to third OFDM symbols in the conventional manner. Therefore, in order to ensure correct demodulation of the DCI, the start time position of the transmitted CRS needs to be in the time domain. The offset is performed such that the start time position (ie, the OFDM symbol position) of the transmitted CRS is consistent with the start time position of the transmitted DCI.
- the placeholder contains a signal for occupying the channel, and may also include a synchronization signal, etc., as follows
- the placeholder may further include an indication bit indicating a start time position of transmitting the DCI.
- the method before sending the configured DCI to the UE, the method further includes:
- a placeholder is transmitted to the UE, the placeholder including an indication bit indicating a start time position of transmitting the DCI.
- an Nbit placeholder may be used to explicitly indicate the start time position of transmitting the DCI in the incomplete subframe.
- the starting time position may also be a preset position.
- the length of the available incomplete subframe may be limited in advance, and the incomplete subframe is used to transmit the user data only when the length of the incomplete subframe is greater than a preset value.
- the start time position of the transmission DCI may be preset, for example, the start time position of the preset transmission DCI is a symbol position separated from the end position of the incomplete subframe by L2 OFDM symbols, or, Let the start time position of the transmission DCI be the M2th OFDM symbol from the OFDM symbol from which the placeholder is transmitted.
- CFI Control Format Indicatior
- the OFDM number of the transmission user data may be explicitly indicated in the DCI, that is, the DCI includes information indicating the number of OFDM symbols for transmitting user data in the incomplete subframe, for example, in the DCI.
- the fractional_subframe_datasymb_num field is added to indicate the number of OFDMs for transmitting user data; and the number of OFDMs for transmitting user data may be implicitly indicated, for example, the number of OFDM symbols for transmitting user data in the first incomplete subframe is 14-d2-P, d2
- P is the number of OFDM symbols for transmitting DCI in the incomplete subframe (the number of OFDM symbols of the transmission DCI may be indicated in the control format indication bit CFI, or may be preset The number of OFDM symbols); the number of OFDMs for transmitting user data can also be set to a preset value N.
- the number of OFDM symbols for transmitting user data to the UE in the incomplete subframe is a preset value N
- the number of OFDM symbols transmitting DCI in the incomplete subframe may be implicitly indicated as 14-d2-N.
- the starting time position of transmitting the DCI may be the same as the starting time position of transmitting the legacy DCI, that is, The starting boundary position of the sub-frame.
- the OFDM number of the transmission user data may be explicitly indicated in the DCI, that is, the DCI includes information indicating the number of OFDM symbols for transmitting user data in the incomplete subframe, such as adding a fractional_subframe_datasymb_num field in the DCI.
- the number of OFDMs indicating the transmission of user data; the number of OFDMs for transmitting user data may also be set to a preset value N.
- a flowchart of a data transmission method includes the following steps:
- S501 Receive a DCI sent by the cell in a complete subframe of the occupied unlicensed frequency band
- S502 Acquire, according to the DCI, user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band.
- the DCI includes information indicating a subframe scheduled by the DCI, where the subframe scheduled by the DCI includes a complete subframe where the DCI is located, and is adjacent to a complete subframe where the DCI is located. a first incomplete subframe and/or a second incomplete subframe; wherein the first incomplete subframe is a subframe before a complete subframe in which the DCI is located, and the second incomplete subframe is in The subframe after the complete subframe in which the DCI is located.
- acquiring user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band including:
- the method before receiving the DCI sent by the cell, the method further includes:
- the DCI further includes information indicating a start time position of transmitting user data in the first incomplete subframe.
- the DCI further includes information indicating the number of orthogonal frequency division multiplexing OFDM symbols for transmitting user data in the first incomplete subframe; or transmitting user data in the first incomplete subframe.
- the number of OFDM symbols is 14-d1, and d1 is a start time position for transmitting user data in the first incomplete subframe; or, the number of OFDM symbols for transmitting user data in the first incomplete subframe is preset Value.
- the DCI further includes an orthogonal frequency division multiplexing OFDM indicating that user data is transmitted in the second incomplete subframe.
- the information of the number of symbols; or the number of OFDM symbols for transmitting user data in the second incomplete subframe is a preset value.
- a flowchart of a data transmission method includes the following steps:
- S601 Receive a DCI sent by the cell in an incomplete subframe of the occupied unlicensed band.
- S602 Receive, according to the DCI, user data that is transmitted by the cell in the incomplete subframe.
- the method further includes:
- the received DCI is demodulated based on the CRS.
- the method before receiving the DCI, the method further includes:
- the above embodiments describe the configuration and transmission process of DCI supporting user data transmission in an incomplete subframe, including DCI transmission in an incomplete subframe and DCI transmission in a complete subframe.
- DCI transmission in an incomplete subframe of the type shown in FIG. 1(a) in addition to the need to change the indication content included in the DCI itself, it is necessary to change the transmission configuration information of the DCI, and The transmission time position of the cell-specific reference signal CRS.
- CRS The transmission time position of the cell-specific reference signal
- a flowchart of a data transmission method includes the following steps:
- S701 Configure, for the user equipment UE, transmission configuration information of the downlink control information DCI, where the DCI is used to indicate that the UE receives user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band; the transmission configuration information includes the cell. Transmitting a start time position of the DCI in the incomplete subframe;
- S702 Send the transmission configuration information to the UE, and send the DCI in an incomplete subframe of the occupied unlicensed frequency band based on the transmission configuration information of the DCI.
- the method further includes:
- a cell-specific reference signal CRS is transmitted based on a start time position at which the DCI is transmitted, to cause the UE to demodulate the received DCI based on the CRS.
- the existing CRS pattern is to transmit the CRS on the 1, 5, 8, and 12 OFDM symbols of the subframe.
- the start time position of the DCI is not the boundary position of the subframe, that is, the DCI is not transmitted on the first to third OFDM symbols in the conventional manner, therefore, in order to ensure the correct DCI.
- the start time position of the transmitted CRS needs to be offset in the time domain such that the start time position (ie, the OFDM symbol position) of the transmitted CRS is consistent with the start time position of the transmitted DCI.
- the transmission configuration information includes, in addition to the start time position that the cell sends the DCI in the incomplete subframe, the number of OFDM symbols that the cell sends the DCI. Beam time position).
- the specific process of sending the transmission configuration information of the DCI to the UE may be: for the start time position in the transmission configuration information, the carrying indication may be sent to the UE in the incomplete subframe.
- the number of OFDM symbols in the transmission configuration information can be indicated by controlling the format indication bit CFI.
- the start time position and the number of OFDM symbols for transmitting the DCI in the incomplete subframe are specified in a preset manner, it is not required to send the DCI to the UE in some embodiments of the present disclosure.
- the steps to transfer configuration information when the start time position and the number of OFDM symbols for transmitting the DCI in the incomplete subframe are specified in a preset manner, it is not required to send the DCI to the UE in some embodiments of the present disclosure.
- a flowchart of a data transmission method includes the following steps:
- S801 Receive transmission configuration information of downlink control information DCI sent by the base station, where the DCI is used to indicate that the UE receives user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band; the transmission configuration information is included in the cell. Transmitting a start time position of the DCI in the incomplete subframe;
- the method further includes:
- the received DCI is demodulated based on the received CRS.
- a data transmission device corresponding to the data transmission method is further provided in some embodiments of the present disclosure. Since the principle of solving the problem is similar to the data transmission method of some embodiments of the present disclosure, the implementation of the device may be See the implementation of the method, and the repetition will not be repeated.
- FIG. 9 is a schematic structural diagram of a data transmission apparatus according to some embodiments of the present disclosure, including:
- the configuration module 91 is configured to configure downlink control information DCI for the user equipment UE, where the DCI is used to indicate that the UE acquires user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band;
- a sending module 92 configured to send, to the UE, the configured DCI, and indicated by the DCI User data is transmitted to the UE in an incomplete subframe.
- the sending module 92 is specifically configured to:
- the configured DCI is transmitted to the UE within a complete subframe of the occupied unlicensed band.
- the DCI includes information indicating a subframe scheduled by the DCI, where the subframe scheduled by the DCI includes a complete subframe where the DCI is located, and is adjacent to a complete subframe where the DCI is located. a first incomplete subframe and/or a second incomplete subframe; wherein the first incomplete subframe is a subframe before a complete subframe in which the DCI is located, and the second incomplete subframe is in The subframe after the complete subframe in which the DCI is located.
- the sending module 92 is specifically configured to:
- the subframe scheduled by the DCI includes the first incomplete subframe, before transmitting the configured DCI to the UE, transmitting user data to the UE in the first incomplete subframe; and/ or,
- the subframe scheduled by the DCI includes the second incomplete subframe, after transmitting the configured DCI to the UE, transmitting user data to the UE in the second incomplete subframe.
- the sending module is further configured to: before sending the configured DCI to the UE, in the first Sending a placeholder to the UE in a complete subframe;
- the placeholder includes an indication bit indicating a time position of the end of the placeholder transmission, and is used to indicate that the UE buffers the received time position from the end of the placeholder transmission to the first incomplete subframe. All data between the end positions, and based on the DCI received subsequently, the user data is extracted from all the cached data.
- the DCI further includes information indicating a start time position of transmitting user data in the first incomplete subframe.
- the DCI further includes information indicating the number of orthogonal frequency division multiplexing OFDM symbols for transmitting user data in the first incomplete subframe; or transmitting user data in the first incomplete subframe.
- the number of OFDM symbols is 14-d1, and d1 is a start time position for transmitting user data in the first incomplete subframe; or, the number of OFDM symbols for transmitting user data in the first incomplete subframe is preset Value.
- the DCI further includes an orthogonal frequency division multiplexing OFDM indicating that user data is transmitted in the second incomplete subframe.
- the information of the number of symbols; or the number of OFDM symbols for transmitting user data in the second incomplete subframe is a preset value.
- the sending module 92 is specifically configured to:
- the sending module 92 is further configured to:
- a cell-specific reference signal CRS is transmitted based on a start time position at which the DCI is transmitted, to cause the UE to demodulate the received DCI based on the CRS.
- the sending module 92 is further configured to: before sending the configured DCI to the UE, send a placeholder to the UE in the incomplete subframe, where the placeholder includes an indication transmission An indication bit of the start time position of the DCI.
- the DCI includes information indicating the number of orthogonal frequency division multiplexing OFDM symbols for transmitting user data in the incomplete subframe; or transmitting user data to the UE in the incomplete subframe.
- the number of OFDM symbols is 14-d2-P, d2 is the start time position of transmitting the DCI, and P is the number of OFDM symbols transmitting DCI in the incomplete subframe indicated in the control format indicator bit CFI; or
- the number of OFDM symbols for transmitting user data to the UE in the incomplete subframe is a preset value.
- the number of OFDM symbols for transmitting user data to the UE in the incomplete subframe is a preset value N
- the number of OFDM symbols for transmitting DCI in the incomplete subframe is 14-d2-N.
- a schematic structural diagram of a data transmission apparatus includes:
- the receiving module 101 is configured to receive downlink control information DCI sent by the cell;
- the obtaining module 102 is configured to acquire, according to the DCI, user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band.
- the receiving module 101 is specifically configured to:
- the DCI transmitted by the receiving cell in the complete subframe of the occupied unlicensed band is the DCI transmitted by the receiving cell in the complete subframe of the occupied unlicensed band.
- the DCI includes information indicating a subframe scheduled by the DCI, where the DCI The scheduled subframe includes a complete subframe in which the DCI is located, and a first incomplete subframe and/or a second incomplete subframe adjacent to a complete subframe in which the DCI is located; wherein the first incomplete subframe The subframe is a subframe before the complete subframe in which the DCI is located, and the second incomplete subframe is a subframe after the complete subframe in which the DCI is located.
- the obtaining module 102 is specifically configured to:
- the obtaining module 102 is specifically configured to: before receiving the DCI sent by the cell, receive a placeholder sent by the cell in the first incomplete subframe; where the placeholder includes the indication An indication bit of the time position at which the placeholder transmission ends; buffering all data received between the time position from the end of the placeholder transmission to the end position of the first incomplete subframe.
- the receiving module 101 is specifically configured to:
- the obtaining module 102 is specifically configured to:
- the receiving module 101 is further configured to:
- the receiving module 101 is further configured to: before receiving the DCI, receive a placeholder sent by the cell in the incomplete subframe, where the placeholder includes a start time position indicating a transmission DCI The indicator bit.
- FIG. 11 is a schematic structural diagram of a data transmission apparatus according to some embodiments of the present disclosure, including:
- the configuration module 111 is configured to configure, for the user equipment UE, transmission configuration information of the downlink control information DCI, where the DCI is used to indicate that the UE receives user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band;
- the configuration information includes a cell sending the start of the DCI in the incomplete subframe.
- the sending module 112 is configured to send the transmission configuration information to the UE, and send the DCI in an incomplete subframe of the occupied unlicensed frequency band based on the transmission configuration information of the DCI.
- the sending module 112 is further configured to:
- a cell-specific reference signal CRS is transmitted based on a start time position at which the DCI is transmitted, to cause the UE to demodulate the received DCI based on the CRS.
- the sending module 112 is specifically configured to:
- a placeholder is transmitted to the UE, the placeholder including an indication bit indicating a start time position of transmitting the DCI.
- the transmission configuration information further includes: sending the number of orthogonal frequency division multiplexing OFDM symbols of the DCI;
- the sending module 112 is specifically configured to:
- the number of OFDM symbols for transmitting the DCI is indicated by a control format indicator bit CFI.
- FIG. 12 is a schematic structural diagram of a data transmission apparatus according to some embodiments of the present disclosure, including:
- the first receiving module 121 is configured to receive transmission configuration information of the downlink control information DCI sent by the base station, where the DCI is used to indicate that the UE receives user data that is transmitted by the cell in an incomplete subframe of the occupied unlicensed frequency band; Transmitting configuration information includes a start time position at which the cell transmits the DCI in the incomplete subframe;
- the second receiving module 122 is configured to receive, according to the transmission configuration information of the DCI, the DCI sent by the cell in an incomplete subframe of the occupied unlicensed frequency band.
- the second receiving module 122 is further configured to:
- embodiments of the present disclosure can be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware aspects. Moreover, the present disclosure may be packaged in one or more Computers containing computer usable program code may be in the form of a computer program product embodied on a storage medium, including but not limited to disk storage, CD-ROM, optical storage, and the like.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
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Abstract
本公开涉及无线通信技术领域,尤其涉及一种数据传输方法及装置,用以解决现有的传输方式不支持在非授权频段的不完整子帧上进行数据传输的问题。本公开的一些实施例提供的数据传输方法包括:为用户设备UE配置下行控制信息DCI;所述DCI用于指示该UE获取小区在占用的非授权频段的不完整子帧内传输的用户数据;向所述UE发送配置的所述DCI,并在所述DCI指示的不完整子帧内向所述UE传输用户数据。
Description
相关申请的交叉引用
本申请主张在2015年3月24日在中国提交的中国专利申请号No.201510130694.5的优先权,其全部内容通过引用包含于此。
本公开涉及无线通信技术领域,尤其涉及一种数据传输方法及装置。
随着移动互联网中数据流量的激增,各大运营商都在探索在非授权频段上使用长期演进(Long Term Evolution,LTE)技术,由此发展出了一种名为辅助授权接入(License-assisted Access,LAA)的技术。
由于非授权频段对于所有的运营商都是开放的,不同运营商具有相同的权利在非授权频段上部署LTE。为了使异系统或异运营商公平竞争使用非授权频段,在LAA技术中引入了先听后说(listen before talk,LBT)机制,即在每次进行数据传输前,先预留一段时间来对载波进行感知,进行空闲信道评估(Clear Channel Assessment,CCA)过程,当感知到载波可用才开始进行数据传输,并且每次进行数据传输有最大时长的限制。
LTE系统的最小调度单位为一个子帧(1ms),因此在现有的LTE系统中,控制信道都是针对完整子帧设计的。每个子帧的前1~3个正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)符号用于进行物理下行控制信道(Physical Downlink Control Channel,PDCCH)传输。而CCA可以发生在子帧的任意时刻,持续时间最小为20us,因此,CCA的引入,会带来不完整子帧问题。如图1(a)所示,小区通过CCA过程,竞争到可用载波的时间位置并不是子帧边界,这时,小区需要在不完整子帧内开始进行控制信息及数据的传输。另外,由于LBT机制有着最大传输时长的限制,最后进行数据传输的子帧也有可能是不完整子帧,如图1(b)所示。
显然,相关技术中的传输方式不支持在非授权频段的不完整子帧上进行数据传输。
发明内容
本公开的一些实施例提供一种数据传输方法及装置,用以解决现有的传输方式不支持在非授权频段的不完整子帧上进行数据传输的问题。
本公开的一些实施例提供一种数据传输方法,包括:
为用户设备UE配置下行控制信息DCI;所述DCI用于指示该UE获取小区在占用的非授权频段的不完整子帧内传输的用户数据;
向所述UE发送配置的所述DCI,并在所述DCI指示的不完整子帧内向所述UE传输用户数据。
可选地,向所述UE发送配置的所述DCI,包括:
在占用的非授权频段的完整子帧内,向所述UE发送配置的所述DCI。
可选地,所述DCI中包含指示该DCI所调度的子帧的信息,其中,该DCI所调度的子帧包括该DCI所在的完整子帧,以及与该DCI所在的完整子帧相邻的第一不完整子帧和/或第二不完整子帧;其中,所述第一不完整子帧为在该DCI所在的完整子帧之前的子帧,所述第二不完整子帧为在该DCI所在的完整子帧之后的子帧。
可选地,向所述UE发送配置的所述DCI,并在所述DCI指示的不完整子帧内向所述UE传输用户数据,包括:
若该DCI所调度的子帧包括所述第一不完整子帧,则向所述UE发送配置的所述DCI之前,在所述第一不完整子帧内向所述UE传输用户数据;和/或,
若该DCI所调度的子帧包括所述第二不完整子帧,则向所述UE发送配置的所述DCI之后,在所述第二不完整子帧内向所述UE传输用户数据。
可选地,若该DCI所调度的子帧包括所述第一不完整子帧;则向所述UE发送配置的所述DCI之前,还包括:
在所述第一不完整子帧内向所述UE发送占位符;
其中,所述占位符中包含指示该占位符传输结束的时间位置的指示位,用于指示所述UE缓存接收的从该占位符传输结束的时间位置到该第一不完整子帧的结束位置之间的所有数据,并基于后续接收的所述DCI,从缓存的所有数据中提取出所述用户数据。
可选地,所述DCI中还包含指示在该第一不完整子帧内传输用户数据的起始时间位置的信息。
可选地,所述DCI中还包含指示在该第一不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在该第一不完整子帧内传输用户数据的OFDM符号数为14-d1,d1为在该第一不完整子帧内传输用户数据的起始时间位置;或者,在该第一不完整子帧内传输用户数据的OFDM符号数为预设数值。
可选地,若该DCI所调度的子帧包括所述第二不完整子帧,则所述DCI中还包含指示在该第二不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在该第二不完整子帧内传输用户数据的OFDM符号数为预设数值。
可选地,向所述UE发送配置的所述DCI,包括:
在所述不完整子帧内,向所述UE发送配置的所述DCI。
可选地,所述方法还包括:
基于发送所述DCI的起始时间位置,发送小区特定参考信号CRS,以使所述UE基于所述CRS解调接收的DCI。
可选地,向所述UE发送配置的DCI之前,还包括:
在所述不完整子帧内,向所述UE发送占位符,所述占位符中包含指示传输所述DCI的起始时间位置的指示位。
可选地,所述DCI中包含指示在所述不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在所述不完整子帧内向所述UE传输用户数据的OFDM符号数为14-d2-P,d2为发送所述DCI的起始时间位置,P为在所述不完整子帧内传输DCI的OFDM符号数;或者,在所述不完整子帧内向所述UE
传输用户数据的OFDM符号数为预设数值。
可选地,若在所述不完整子帧内向所述UE传输用户数据的OFDM符号数为预设数值N,则在所述不完整子帧内传输DCI的OFDM符号数为14-d2-N。
本公开的一些实施例提供的一种数据传输方法,包括:
接收小区发送的下行控制信息DCI;
基于所述DCI,获取小区在占用的非授权频段的不完整子帧内传输的用户数据。
可选地,接收小区发送的DCI,包括:
接收小区在占用的非授权频段的完整子帧内发送的DCI。
可选地,所述DCI中包含指示该DCI所调度的子帧的信息,其中,该DCI所调度的子帧包括该DCI所在的完整子帧,以及与该DCI所在的完整子帧相邻的第一不完整子帧和/或第二不完整子帧;其中,所述第一不完整子帧为在该DCI所在的完整子帧之前的子帧,所述第二不完整子帧为在该DCI所在的完整子帧之后的子帧。
可选地,基于所述DCI,获取小区在占用的非授权频段的不完整子帧内传输的用户数据,包括:
基于所述DCI,从缓存的所述小区在所述第一不完整子帧内传输的所有数据中提取用户数据;和/或,
基于所述DCI,接收所述小区在所述第二不完整子帧内传输的用户数据。
可选地,接收小区发送的DCI之前,还包括:
接收小区在所述第一不完整子帧内发送的占位符;其中,所述占位符中包含指示该占位符传输结束的时间位置的指示位;
缓存接收的从该占位符传输结束的时间位置到所述第一不完整子帧的结束位置之间的所有数据。
可选地,接收小区发送的DCI,包括:
接收小区在所述不完整子帧内发送的DCI。
可选地,获取小区在所述不完整子帧内传输的用户数据,包括:
基于所述DCI,接收所述小区在所述不完整子帧内传输的用户数据。
可选地,所述方法还包括:
基于小区发送所述DCI的起始时间位置,接收小区特定参考信号CRS;
基于所述CRS解调接收的DCI。
可选地,接收所述DCI之前,还包括:
接收小区在所述不完整子帧内发送的占位符,所述占位符中包含指示传输DCI的起始时间位置的指示位。
本公开的一些实施例提供一种数据传输装置,包括:
配置模块,用于为用户设备UE配置下行控制信息DCI;所述DCI用于指示该UE获取小区在占用的非授权频段的不完整子帧内传输的用户数据;
发送模块,用于向所述UE发送配置的所述DCI,并在所述DCI指示的不完整子帧内向所述UE传输用户数据。
本公开的一些实施例提供一种数据传输装置,包括:
接收模块,用于接收小区发送的下行控制信息DCI;
获取模块,用于基于所述DCI,获取小区在占用的非授权频段的不完整子帧内传输的用户数据。
本公开的一些实施例提供一种数据传输方法,包括:
为用户设备UE配置下行控制信息DCI的传输配置信息;所述DCI用于指示该UE接收小区在占用的非授权频段的不完整子帧内传输的用户数据;所述传输配置信息包括小区在该不完整子帧内发送所述DCI的起始时间位置;
将所述传输配置信息发送给所述UE,并基于所述DCI的传输配置信息,在占用的非授权频段的不完整子帧内发送所述DCI。
本公开的一些实施例提供一种数据传输方法,包括:
接收基站发送的下行控制信息DCI的传输配置信息;所述DCI用于指示该UE接收小区在占用的非授权频段的不完整子帧内传输的用户数据;所述传输配置信息包括在小区在该不完整子帧内发送所述DCI的起始时间位置;
基于所述DCI的传输配置信息,接收小区在占用的非授权频段的不完整子
帧内发送的所述DCI。
本公开的一些实施例提供一种数据传输装置,包括:
配置模块,用于为用户设备UE配置下行控制信息DCI的传输配置信息;所述DCI用于指示该UE接收小区在占用的非授权频段的不完整子帧内传输的用户数据;所述传输配置信息包括小区在该不完整子帧内发送所述DCI的起始时间位置;
发送模块,用于将所述传输配置信息发送给所述UE,并基于所述DCI的传输配置信息,在占用的非授权频段的不完整子帧内发送所述DCI。
本公开的一些实施例提供一种数据传输装置,包括:
第一接收模块,用于接收基站发送的下行控制信息DCI的传输配置信息;所述DCI用于指示该UE接收小区在占用的非授权频段的不完整子帧内传输的用户数据;所述传输配置信息包括在小区在该不完整子帧内发送所述DCI的起始时间位置;
第二接收模块,用于基于所述DCI的传输配置信息,接收小区在占用的非授权频段的不完整子帧内发送的所述DCI。
采用上述一些实施例,可以通过配置并向UE发送下行控制信息DCI,来指示UE获取小区在占用的非授权频段的不完整子帧内传输的用户数据。采用上述另一实施例,可以通过配置并向UE发送DCI的传输配置信息,来指示UE在小区占用的非授权频段的不完整子帧内接收DCI,进而根据该DCI获取小区在该不完整子帧内传输的用户数据。从而,本公开的一些实施例可以支持小区在占用的非授权频段的不完整子帧内进行用户数据传输,充分利用了小区占用的非授权频段的不完整子帧,提高了子帧资源利用率。
图1(a)为小区占用的非授权频段的不完整子帧示意图之一;
图1(b)为小区占用的非授权频段的不完整子帧示意图之二;
图2为本公开的一些实施例提供的数据传输方法流程图;
图3(a)为在完整子帧内传输能够调度不完整子帧的DCI的示意图之一;
图3(b)为在完整子帧内传输能够调度不完整子帧的DCI的示意图之二;
图4为本公开的一些实施例提供的数据传输方法流程图;
图5为本公开的一些实施例提供的数据传输方法流程图;
图6为本公开的一些实施例提供的数据传输方法流程图;
图7为本公开的一些实施例提供的数据传输方法流程图;
图8为本公开的一些实施例提供的数据传输方法流程图;
图9为本公开的一些实施例提供的数据传输装置结构示意图;
图10为本公开的一些实施例提供的数据传输装置结构示意图;
图11为本公开的一些实施例提供的数据传输装置结构示意图;
图12为本公开的一些实施例提供的数据传输装置结构示意图。
本公开的一些实施例中,通过配置的下行控制信息DCI来指示UE获取小区在占用的非授权频段的不完整子帧内传输的用户数据,可以充分利用小区占用的非授权频段的不完整子帧,提高子帧资源利用率。
下面结合说明书附图对本公开的一些实施例作进一步详细描述。
在本公开的一些实施例中,在占用的非授权频段的完整子帧内,向UE发送DCI,采用在完整子帧内发送的DCI来调度不完整子帧。
如图2所示,为本公开的一些实施例提供的数据传输方法流程图,包括以下步骤:
S201:为用户设备(User Equipment,UE)配置下行控制信息(Downlink Control Information,DCI);所述DCI用于指示该UE获取小区在占用的非授权频段的不完整子帧内传输的用户数据。
本公开的一些实施例的执行主体为网络侧设备,具体可以为基站(或称小区)。
S202:在占用的非授权频段的完整子帧内,向所述UE发送配置的所述DCI,
并在所述DCI指示的不完整子帧内向所述UE传输用户数据。
在本公开的一些实施例中,在完整子帧内传输DCI,该DCI可以在完整子帧的第1~3个(Orthogonal Frequency Division Multiplexing,OFDM)符号上传输。该DCI除了可以调度本身所在的完整子帧外,还可以调度与该完整子帧相邻的、在该完整子帧之前和/或之后的不完整子帧;这里,将与该完整子帧相邻的、在该完整子帧之前的不完整子帧称为第一不完整子帧,将与该完整子帧相邻的、在该完整子帧之后的不完整子帧称为第二不完整子帧。如图3(a)和(b)所示,在实际实施中,可以在传输的DCI中采用2比特(bit)指示位来指示该DCI所调度的子帧,比如,采用指示位0来标识第一不完整子帧,采用指示位1来标识该DCI所在的完整子帧,采用指示位2来标识第二不完整子帧。
在具体实施过程中,若该DCI所调度的子帧包括第一不完整子帧,则向所述UE发送配置的所述DCI之前,在所述第一不完整子帧内向所述UE传输用户数据;和/或,若该DCI所调度的子帧包括所述第二不完整子帧,则向所述UE发送配置的所述DCI之后,在所述第二不完整子帧内向所述UE传输用户数据。
针对DCI所调度的子帧包括第一不完整子帧的情况,涉及以下指示内容:
1)通过占位符指示起始缓存位置:
这里,占位符中包含用于占用信道的信号,还可以包含同步信号等,如下所述,该占位符中还可以包含指示该占位符传输结束的时间位置的指示位。
由于在该第一不完整子帧内传输用户数据发生在传输DCI之前,因此,UE需要缓存在接收到DCI之前接收的所有数据,这里,UE缓存的所有数据除了包括用户数据外,还可能包括同步信号、辅助信息等其它非用户数据。在接收到该DCI之后,再基于该DCI,从缓存的所有数据中提取出需要的用户数据。为了实现接收到DCI之前的数据缓存,UE需要知道在该不完整子帧的哪个符号位置开始缓存。基于此,在具体实施中,向UE发送该DCI之前,还包括:在所述第一不完整子帧内向所述UE发送占位符;其中,所述占位符中包含指示该占位符传输结束的时间位置的指示位,用于指示所述UE缓存接收的从该占位
符传输结束的时间位置到该第一不完整子帧的结束位置之间的所有数据,并基于后续接收的所述DCI,从缓存的所有数据中提取出所述用户数据。
2)在DCI中指示传输用户数据的起始时间位置:
在UE缓存了在第一不完整子帧内接收的所有数据后,需要知道在该第一不完整子帧内传输用户数据的起始时间位置,以及结束时间位置或传输用户数据的OFDM符号数。这里先说明起始时间位置的指示:具体地,可以在DCI中增加fractional_subframe_datasymb_position字段,来显性指示该UE在该第一不完整子帧内传输用户数据的起始时间位置。
可选地,该起始时间位置也可以是预设的位置。
在具体实施中,可以预先对可利用的不完整子帧的时间长度进行限定,只有在不完整子帧的时间长度大于预设值时,才利用该不完整子帧传输用户数据。在这种情况下,可以预设在该不完整子帧内传输用户数据的起始时间位置,比如,预设传输用户数据的起始时间位置为与该不完整子帧的结束位置相隔L1个OFDM符号的符号位置,或者,预设传输用户数据的起始时间位置为从开始传输占位符的OFDM符号起的第M1个OFDM符号。
3)在DCI中指示传输用户数据的OFDM符号数:
在2)中已说明,UE在缓存了在第一不完整子帧内接收的所有数据后,除在该第一不完整子帧内传输用户数据的起始时间位置外,还需要知道传输用户数据的结束时间位置或OFDM符号数,这里优选指示OFDM符号数的方式。
在具体实施过程中,可以在DCI中显性指示传输用户数据的OFDM数,即在所述DCI中包含指示在该第一不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息,比如在DCI中增加fractional_subframe_datasymb_num字段,来指示传输用户数据的OFDM数;也可以隐性指示传输用户数据的OFDM数,比如在该第一不完整子帧内传输用户数据的OFDM符号数为14-d1,d1为在该第一不完整子帧内传输用户数据的起始时间位置;还可以将传输用户数据的OFDM数设为预设数值N。
在具体实施过程中,可以重用现有的小区特定参考信号(Cell-specific
reference signals,CRS)的模式(pattern),即在子帧的第1、5、8、12个OFDM符号上发送CRS、以使UE基于该CRS解调接收的DCI。
在本公开的一些实施例中,在发送用户数据的不完整子帧内,发送对应的DCI,也即采用在占用的非授权频段的不完整子帧内传输的DCI来调度本子帧的用户数据。这里,不完整子帧类型包括如图1(a)所示类型的不完整子帧(该不完整子帧的起始位置为该不完整子帧所属的完整子帧的非边界位置,对应实施例一中的第一不完整子帧),和如图1(b)所示类型的不完整子帧(该不完整子帧的结束位置为该不完整子帧所属的完整子帧的非边界位置,对应实施例一中的第二不完整子帧)。
如图4所示,为本公开的一些实施例提供的数据传输方法流程图,包括以下步骤:
S401:为UE配置DCI;所述DCI用于指示该UE获取小区在占用的非授权频段的不完整子帧内传输的用户数据。
S402:在所述不完整子帧内,向所述UE发送配置的所述DCI,并在所述DCI指示的不完整子帧内向所述UE传输用户数据。
针对如图1(a)所示类型的不完整子帧,涉及以下内容:
可选地,基于发送所述DCI的起始时间位置,发送小区CRS,以使所述UE基于所述CRS解调接收的DCI。
在具体实施过程中,现有的CRS pattern是在子帧的第1、5、8、12个OFDM符号上发送CRS,而在该种类型的不完整子帧中,发送DCI的起始时间位置并不是子帧的边界位置,也即并不会按照传统方式在第1~3个OFDM符号上发送DCI,因此,为了保证DCI的正确解调,需要对发送CRS的起始时间位置在时域上进行偏移,使得发送CRS的起始时间位置(也即OFDM符号位置)与发送DCI的起始时间位置保持一致。
本公开的一些实施例涉及到以下指示内容:
1)通过占位符指示传输DCI的起始时间位置;
这里,占位符中包含用于占用信道的信号,还可以包含同步信号等,如下
所述,该占位符中还可以包含指示传输DCI的起始时间位置的指示位。
具体地,向所述UE发送配置的DCI之前,还包括:
在所述不完整子帧内,向所述UE发送占位符,所述占位符中包含指示传输所述DCI的起始时间位置的指示位。
在具体实施中,可以采用Nbit的占位符来显性指示在该不完整子帧内传输DCI的起始时间位置。
可选地,该起始时间位置也可以是预设的位置。
在具体实施中,可以预先对可利用的不完整子帧的时间长度进行限定,只有在不完整子帧的时间长度大于预设值时,才利用该不完整子帧传输用户数据。在这种情况下,可以预设传输DCI的起始时间位置,比如,预设传输DCI的起始时间位置为与该不完整子帧的结束位置相隔L2个OFDM符号的符号位置,或者,预设传输DCI的起始时间位置为从开始传输占位符的OFDM符号起的第M2个OFDM符号。
2)通过控制格式指示位CFI指示传输DCI的OFDM符号数;
这里,通过控制格式指示位(Control Format Indicatior,CFI)来指示发送所述DCI的OFDM符号数。
3)在DCI中指示传输用户数据的OFDM符号数:
在具体实施过程中,既可以在DCI中显性指示传输用户数据的OFDM数,即在所述DCI中包含指示在该不完整子帧内传输用户数据的OFDM符号数的信息,比如在DCI中增加fractional_subframe_datasymb_num字段,来指示传输用户数据的OFDM数;也可以隐性指示传输用户数据的OFDM数,比如在该第一不完整子帧内传输用户数据的OFDM符号数为14-d2-P,d2为发送所述DCI的起始时间位置,P为在所述不完整子帧内传输DCI的OFDM符号数(该传输DCI的OFDM符号数可以在控制格式指示位CFI中指示,也可以是预设的OFDM符号数);还可以将传输用户数据的OFDM数设为预设数值N。
可选地,若在所述不完整子帧内向所述UE传输用户数据的OFDM符号数为预设数值N,则在所述不完整子帧内传输DCI的OFDM符号数可以隐性指示为
14-d2-N。
针对如图1(b)所示类型的不完整子帧,涉及以下内容:
1)通过控制格式指示位CFI指示传输DCI的OFDM符号数;
这里,由于这种类型的不完整子帧的起始位置就是其所属完整子帧的起始边界位置,因此,发送DCI的起始时间位置可以与发送传统DCI的起始时间位置相同,即为子帧的起始边界位置。
3)在DCI中指示传输用户数据的OFDM符号数:
这里,可以在DCI中显性指示传输用户数据的OFDM数,即在所述DCI中包含指示在该不完整子帧内传输用户数据的OFDM符号数的信息,比如在DCI中增加fractional_subframe_datasymb_num字段,来指示传输用户数据的OFDM数;也可以将传输用户数据的OFDM数设为预设数值N。
以下实施例对应本公开的上述实施例,为UE侧的执行步骤。具体实施参见上述实施例的描述,这里不再赘述。
如图5所示,为本公开的一些实施例提供的数据传输方法流程图,包括以下步骤:
S501:接收小区在占用的非授权频段的完整子帧内发送的DCI;
S502:基于所述DCI,获取小区在占用的非授权频段的不完整子帧内传输的用户数据。
可选地,所述DCI中包含指示该DCI所调度的子帧的信息,其中,该DCI所调度的子帧包括该DCI所在的完整子帧,以及与该DCI所在的完整子帧相邻的第一不完整子帧和/或第二不完整子帧;其中,所述第一不完整子帧为在该DCI所在的完整子帧之前的子帧,所述第二不完整子帧为在该DCI所在的完整子帧之后的子帧。
可选地,基于所述DCI,获取小区在占用的非授权频段的不完整子帧内传输的用户数据,包括:
基于所述DCI,从缓存的所述小区在所述第一不完整子帧内传输的所有数据中提取用户数据;和/或,
基于所述DCI,接收所述小区在所述第二不完整子帧内传输的用户数据。
可选地,接收小区发送的DCI之前,还包括:
接收小区在所述第一不完整子帧内发送的占位符;其中,所述占位符中包含指示该占位符传输结束的时间位置的指示位;
缓存接收的从该占位符传输结束的时间位置到所述第一不完整子帧的结束位置之间的所有数据。
可选地,所述DCI中还包含指示在该第一不完整子帧内传输用户数据的起始时间位置的信息。
可选地,所述DCI中还包含指示在该第一不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在该第一不完整子帧内传输用户数据的OFDM符号数为14-d1,d1为在该第一不完整子帧内传输用户数据的起始时间位置;或者,在该第一不完整子帧内传输用户数据的OFDM符号数为预设数值。
可选地,若该DCI所调度的子帧包括所述第二不完整子帧,则所述DCI中还包含指示在该第二不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在该第二不完整子帧内传输用户数据的OFDM符号数为预设数值。
以下实施例对应本公开的上述实施例,为UE侧的执行步骤。具体实施参见上述实施例的描述,这里不再赘述。
如图6所示,为本公开的一些实施例提供的数据传输方法流程图,包括以下步骤:
S601:接收小区在占用的非授权频段的不完整子帧内发送的DCI。
S602:基于所述DCI,接收小区在所述不完整子帧内传输的用户数据。
可选地,所述方法还包括:
基于小区发送所述DCI的起始时间位置,接收小区特定参考信号CRS;
基于所述CRS解调接收的DCI。
可选地,接收所述DCI之前,还包括:
接收小区在所述不完整子帧内发送的占位符,所述占位符中包含指示传输DCI的起始时间位置的指示位。
上述实施例中介绍了支持在不完整子帧内进行用户数据传输的DCI的配置及发送过程,其中包括在不完整子帧内进行DCI传输及在完整子帧内进行DCI传输两种情况。针对在图1(a)所示类型的不完整子帧内进行DCI传输这种情况,相比传统传输方式,除了需要变更DCI本身包含的指示内容外,还需要变更DCI的传输配置信息,以及小区特定参考信号CRS的发送时间位置。下面通过本公开的一些实施例作进一步介绍。以下实施例中,本公开的一些实施例为基于网络侧设备侧的描述,本公开的一些实施例为与之对应的UE侧方法流程。
如图7所示,为本公开的一些实施例提供的数据传输方法流程图,包括以下步骤:
S701:为用户设备UE配置下行控制信息DCI的传输配置信息;所述DCI用于指示该UE接收小区在占用的非授权频段的不完整子帧内传输的用户数据;所述传输配置信息包括小区在该不完整子帧内发送所述DCI的起始时间位置;
S702:将所述传输配置信息发送给所述UE,并基于所述DCI的传输配置信息,在占用的非授权频段的不完整子帧内发送所述DCI。
可选地,所述方法还包括:
基于发送所述DCI的起始时间位置,发送小区特定参考信号CRS,以使所述UE基于所述CRS解调接收的DCI。
在具体实施过程中,现有的CRS pattern是在子帧的第1、5、8、12个OFDM符号上发送CRS。在该实施例五中,由于发送DCI的起始时间位置并不是子帧的边界位置,也即DCI并不会按照传统方式在第1~3个OFDM符号上发送,因此,为了保证DCI的正确解调,需要对发送CRS的起始时间位置在时域上进行偏移,使得发送CRS的起始时间位置(也即OFDM符号位置)与发送DCI的起始时间位置保持一致。
在具体实施过程中,该传输配置信息除了包括小区在该不完整子帧内发送所述DCI的起始时间位置外,还包括小区发送所述DCI的OFDM符号数(或结
束时间位置)。
在具体实施过程中,向UE发送DCI的传输配置信息的具体过程可以是:针对传输配置信息中的所述起始时间位置,可以在该不完整子帧内,向所述UE发送携带指示起始时间位置的指示位的占位符。针对传输配置信息中的OFDM符号数,可以通过控制格式指示位CFI来指示。详细介绍可参见上述实施例的描述。
在实际实施中,当在该不完整子帧内发送所述DCI的起始时间位置及OFDM符号数是采用预设的方式指定时,则不需要本公开的一些实施例中向UE发送DCI的传输配置信息的步骤。
如图8所示,为本公开的一些实施例提供的数据传输方法流程图,包括以下步骤:
S801:接收基站发送的下行控制信息DCI的传输配置信息;所述DCI用于指示该UE接收小区在占用的非授权频段的不完整子帧内传输的用户数据;所述传输配置信息包括在小区在该不完整子帧内发送所述DCI的起始时间位置;
S802:基于所述DCI的传输配置信息,接收小区在占用的非授权频段的不完整子帧内发送的所述DCI。
可选地,所述方法还包括:
基于小区发送所述DCI的起始时间位置,接收小区特定参考信号CRS;
基于接收的所述CRS,对接收的所述DCI进行解调。
基于同一发明构思,本公开的一些实施例中还提供了与数据传输方法对应的数据传输装置,由于该装置解决问题的原理与本公开的一些实施例数据传输方法相似,因此该装置的实施可以参见方法的实施,重复之处不再赘述。
如图9所示,为本公开的一些实施例提供的数据传输装置结构示意图,包括:
配置模块91,用于为用户设备UE配置下行控制信息DCI;所述DCI用于指示该UE获取小区在占用的非授权频段的不完整子帧内传输的用户数据;
发送模块92,用于向所述UE发送配置的所述DCI,并在所述DCI指示的
不完整子帧内向所述UE传输用户数据。
可选地,所述发送模块92具体用于:
在占用的非授权频段的完整子帧内,向所述UE发送配置的所述DCI。
可选地,所述DCI中包含指示该DCI所调度的子帧的信息,其中,该DCI所调度的子帧包括该DCI所在的完整子帧,以及与该DCI所在的完整子帧相邻的第一不完整子帧和/或第二不完整子帧;其中,所述第一不完整子帧为在该DCI所在的完整子帧之前的子帧,所述第二不完整子帧为在该DCI所在的完整子帧之后的子帧。
可选地,所述发送模块92具体用于:
若该DCI所调度的子帧包括所述第一不完整子帧,则向所述UE发送配置的所述DCI之前,在所述第一不完整子帧内向所述UE传输用户数据;和/或,
若该DCI所调度的子帧包括所述第二不完整子帧,则向所述UE发送配置的所述DCI之后,在所述第二不完整子帧内向所述UE传输用户数据。
可选地,若该DCI所调度的子帧包括所述第一不完整子帧;则所述发送模块还用于,在向所述UE发送配置的所述DCI之前,在所述第一不完整子帧内向所述UE发送占位符;
其中,所述占位符中包含指示该占位符传输结束的时间位置的指示位,用于指示所述UE缓存接收的从该占位符传输结束的时间位置到该第一不完整子帧的结束位置之间的所有数据,并基于后续接收的所述DCI,从缓存的所有数据中提取出所述用户数据。
可选地,所述DCI中还包含指示在该第一不完整子帧内传输用户数据的起始时间位置的信息。
可选地,所述DCI中还包含指示在该第一不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在该第一不完整子帧内传输用户数据的OFDM符号数为14-d1,d1为在该第一不完整子帧内传输用户数据的起始时间位置;或者,在该第一不完整子帧内传输用户数据的OFDM符号数为预设数值。
可选地,若该DCI所调度的子帧包括所述第二不完整子帧,则所述DCI中还包含指示在该第二不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在该第二不完整子帧内传输用户数据的OFDM符号数为预设数值。
可选地,所述发送模块92具体用于:
在所述不完整子帧内,向所述UE发送配置的所述DCI。
可选地,所述发送模块92还用于:
基于发送所述DCI的起始时间位置,发送小区特定参考信号CRS,以使所述UE基于所述CRS解调接收的DCI。
可选地,所述发送模块92还用于,向所述UE发送配置的DCI之前,在所述不完整子帧内,向所述UE发送占位符,所述占位符中包含指示传输所述DCI的起始时间位置的指示位。
可选地,所述DCI中包含指示在所述不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在所述不完整子帧内向所述UE传输用户数据的OFDM符号数为14-d2-P,d2为发送所述DCI的起始时间位置,P为在控制格式指示位CFI中指示的在所述不完整子帧内传输DCI的OFDM符号数;或者,在所述不完整子帧内向所述UE传输用户数据的OFDM符号数为预设数值。
可选地,若在所述不完整子帧内向所述UE传输用户数据的OFDM符号数为预设数值N,则在所述不完整子帧内传输DCI的OFDM符号数为14-d2-N。
如图10所示,为本公开的一些实施例提供的数据传输装置结构示意图,包括:
接收模块101,用于接收小区发送的下行控制信息DCI;
获取模块102,用于基于所述DCI,获取小区在占用的非授权频段的不完整子帧内传输的用户数据。
可选地,所述接收模块101具体用于:
接收小区在占用的非授权频段的完整子帧内发送的DCI。
可选地,所述DCI中包含指示该DCI所调度的子帧的信息,其中,该DCI
所调度的子帧包括该DCI所在的完整子帧,以及与该DCI所在的完整子帧相邻的第一不完整子帧和/或第二不完整子帧;其中,所述第一不完整子帧为在该DCI所在的完整子帧之前的子帧,所述第二不完整子帧为在该DCI所在的完整子帧之后的子帧。
可选地,所述获取模块102具体用于:
基于所述DCI,从缓存的所述小区在所述第一不完整子帧内传输的所有数据中提取用户数据;和/或,
基于所述DCI,接收所述小区在所述第二不完整子帧内传输的用户数据。
可选地,所述获取模块102具体用于:在接收小区发送的DCI之前,接收小区在所述第一不完整子帧内发送的占位符;其中,所述占位符中包含指示该占位符传输结束的时间位置的指示位;缓存接收的从该占位符传输结束的时间位置到所述第一不完整子帧的结束位置之间的所有数据。
可选地,所述接收模块101具体用于:
接收小区在所述不完整子帧内发送的DCI。
可选地,所述获取模块102具体用于:
基于所述DCI,接收所述小区在所述不完整子帧内传输的用户数据。
可选地,所述接收模块101还用于:
基于小区发送所述DCI的起始时间位置,接收小区特定参考信号CRS;基于所述CRS解调接收的DCI。
可选地,所述接收模块101还用于,接收所述DCI之前,接收小区在所述不完整子帧内发送的占位符,所述占位符中包含指示传输DCI的起始时间位置的指示位。
如图11所示,为本公开的一些实施例提供的数据传输装置结构示意图,包括:
配置模块111,用于为用户设备UE配置下行控制信息DCI的传输配置信息;所述DCI用于指示该UE接收小区在占用的非授权频段的不完整子帧内传输的用户数据;所述传输配置信息包括小区在该不完整子帧内发送所述DCI的起始
时间位置;
发送模块112,用于将所述传输配置信息发送给所述UE,并基于所述DCI的传输配置信息,在占用的非授权频段的不完整子帧内发送所述DCI。
可选地,所述发送模块112还用于:
基于发送所述DCI的起始时间位置,发送小区特定参考信号CRS,以使所述UE基于所述CRS解调接收的DCI。
可选地,所述发送模块112具体用于:
在所述不完整子帧内,向所述UE发送占位符,所述占位符中包含指示传输所述DCI的起始时间位置的指示位。
可选地,所述传输配置信息还包括发送所述DCI的正交频分复用OFDM符号数;
所述发送模块112具体用于:
通过控制格式指示位CFI指示发送所述DCI的OFDM符号数。
如图12所示,为本公开的一些实施例提供的数据传输装置结构示意图,包括:
第一接收模块121,用于接收基站发送的下行控制信息DCI的传输配置信息;所述DCI用于指示该UE接收小区在占用的非授权频段的不完整子帧内传输的用户数据;所述传输配置信息包括在小区在该不完整子帧内发送所述DCI的起始时间位置;
第二接收模块122,用于基于所述DCI的传输配置信息,接收小区在占用的非授权频段的不完整子帧内发送的所述DCI。
可选地,所述第二接收模块122还用于:
基于小区发送所述DCI的起始时间位置,接收小区特定参考信号CRS;基于接收的所述CRS,对接收的所述DCI进行解调。
本领域内的技术人员应明白,本公开的实施例可提供为方法、系统、或计算机程序产品。因此,本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本公开可采用在一个或多个其中包
含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开的实施例的方法、装置(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本公开的一些实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例作出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本公开范围的所有变更和修改。
显然,本领域的技术人员可以对本公开进行各种改动和变型而不脱离本公开的精神和范围。这样,倘若本公开的这些修改和变型属于本公开权利要求及其等同技术的范围之内,则本公开也意图包含这些改动和变型在内。
Claims (56)
- 一种数据传输方法,包括:为用户设备UE配置下行控制信息DCI;所述DCI用于指示该UE获取小区在占用的非授权频段的不完整子帧内传输的用户数据;向所述UE发送配置的所述DCI,并在所述DCI指示的不完整子帧内向所述UE传输用户数据。
- 如权利要求1所述的方法,其中,向所述UE发送配置的所述DCI,包括:在占用的非授权频段的完整子帧内,向所述UE发送配置的所述DCI。
- 如权利要求2所述的方法,其中,所述DCI中包含指示该DCI所调度的子帧的信息,其中,该DCI所调度的子帧包括该DCI所在的完整子帧,以及与该DCI所在的完整子帧相邻的第一不完整子帧和/或第二不完整子帧;其中,所述第一不完整子帧为在该DCI所在的完整子帧之前的子帧,所述第二不完整子帧为在该DCI所在的完整子帧之后的子帧。
- 如权利要求3所述的方法,其中,向所述UE发送配置的所述DCI,并在所述DCI指示的不完整子帧内向所述UE传输用户数据,包括:若该DCI所调度的子帧包括所述第一不完整子帧,则向所述UE发送配置的所述DCI之前,在所述第一不完整子帧内向所述UE传输用户数据;和/或,若该DCI所调度的子帧包括所述第二不完整子帧,则向所述UE发送配置的所述DCI之后,在所述第二不完整子帧内向所述UE传输用户数据。
- 如权利要求3或4所述的方法,其中,若该DCI所调度的子帧包括所述第一不完整子帧;则向所述UE发送配置的所述DCI之前,还包括:在所述第一不完整子帧内向所述UE发送占位符;其中,所述占位符中包含指示该占位符传输结束的时间位置的指示位,用于指示所述UE缓存接收的从该占位符传输结束的时间位置到该第一不完整子帧的结束位置之间的所有数据,并基于后续接收的所述DCI,从缓存的所有数 据中提取出所述用户数据。
- 如权利要求5所述的方法,其中,所述DCI中还包含指示在该第一不完整子帧内传输用户数据的起始时间位置的信息。
- 如权利要求5所述的方法,其中,所述DCI中还包含指示在该第一不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在该第一不完整子帧内传输用户数据的OFDM符号数为14-d1,d1为在该第一不完整子帧内传输用户数据的起始时间位置;或者,在该第一不完整子帧内传输用户数据的OFDM符号数为预设数值。
- 如权利要求3或4所述的方法,其中,若该DCI所调度的子帧包括所述第二不完整子帧,则所述DCI中还包含指示在该第二不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在该第二不完整子帧内传输用户数据的OFDM符号数为预设数值。
- 如权利要求1所述的方法,其中,向所述UE发送配置的所述DCI,包括:在所述不完整子帧内,向所述UE发送配置的所述DCI。
- 如权利要求9所述的方法,还包括:基于发送所述DCI的起始时间位置,发送小区特定参考信号CRS,以使所述UE基于所述CRS解调接收的DCI。
- 如权利要求9所述的方法,其中,向所述UE发送配置的DCI之前,还包括:在所述不完整子帧内,向所述UE发送占位符,所述占位符中包含指示传输所述DCI的起始时间位置的指示位。
- 如权利要求9所述的方法,其中,所述DCI中包含指示在所述不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在所述不完整子帧内向所述UE传输用户数据的OFDM符号数为14-d2-P,d2为发送所述DCI的起始时间位置,P为在所述不完整子帧内传输DCI的OFDM符号数;或者,在所述不完整子帧内向所述UE传输用户数据的OFDM符号数为预设数值。
- 如权利要求12所述的方法,其中,若在所述不完整子帧内向所述UE传输用户数据的OFDM符号数为预设数值N,则在所述不完整子帧内传输DCI的OFDM符号数为14-d2-N。
- 一种数据传输方法,包括:接收小区发送的下行控制信息DCI;基于所述DCI,获取小区在占用的非授权频段的不完整子帧内传输的用户数据。
- 如权利要求14所述的方法,其中,接收小区发送的DCI,包括:接收小区在占用的非授权频段的完整子帧内发送的DCI。
- 如权利要求15所述的方法,其中,所述DCI中包含指示该DCI所调度的子帧的信息,其中,该DCI所调度的子帧包括该DCI所在的完整子帧,以及与该DCI所在的完整子帧相邻的第一不完整子帧和/或第二不完整子帧;其中,所述第一不完整子帧为在该DCI所在的完整子帧之前的子帧,所述第二不完整子帧为在该DCI所在的完整子帧之后的子帧。
- 如权利要求16所述的方法,其中,基于所述DCI,获取小区在占用的非授权频段的不完整子帧内传输的用户数据,包括:基于所述DCI,从缓存的所述小区在所述第一不完整子帧内传输的所有数据中提取用户数据;和/或,基于所述DCI,接收所述小区在所述第二不完整子帧内传输的用户数据。
- 如权利要求17所述的方法,其中,接收小区发送的DCI之前,还包括:接收小区在所述第一不完整子帧内发送的占位符;其中,所述占位符中包含指示该占位符传输结束的时间位置的指示位;缓存接收的从该占位符传输结束的时间位置到所述第一不完整子帧的结束位置之间的所有数据。
- 如权利要求14所述的方法,其中,接收小区发送的DCI,包括:接收小区在所述不完整子帧内发送的DCI。
- 如权利要求19所述的方法,其中,获取小区在所述不完整子帧内传输的用户数据,包括:基于所述DCI,接收所述小区在所述不完整子帧内传输的用户数据。
- 如权利要求19所述的方法,还包括:基于小区发送所述DCI的起始时间位置,接收小区特定参考信号CRS;基于所述CRS解调接收的DCI。
- 如权利要求19所述的方法,其中,接收所述DCI之前,还包括:接收小区在所述不完整子帧内发送的占位符,所述占位符中包含指示传输DCI的起始时间位置的指示位。
- 一种数据传输装置,包括:配置模块,用于为用户设备UE配置下行控制信息DCI;所述DCI用于指示该UE获取小区在占用的非授权频段的不完整子帧内传输的用户数据;发送模块,用于向所述UE发送配置的所述DCI,并在所述DCI指示的不完整子帧内向所述UE传输用户数据。
- 如权利要求23所述的装置,其中,所述发送模块具体用于:在占用的非授权频段的完整子帧内,向所述UE发送配置的所述DCI。
- 如权利要求24所述的装置,其中,所述DCI中包含指示该DCI所调度的子帧的信息,其中,该DCI所调度的子帧包括该DCI所在的完整子帧,以及与该DCI所在的完整子帧相邻的第一不完整子帧和/或第二不完整子帧;其中,所述第一不完整子帧为在该DCI所在的完整子帧之前的子帧,所述第二不完整子帧为在该DCI所在的完整子帧之后的子帧。
- 如权利要求25所述的装置,其中,所述发送模块具体用于:若该DCI所调度的子帧包括所述第一不完整子帧,则向所述UE发送配置的所述DCI之前,在所述第一不完整子帧内向所述UE传输用户数据;和/或,若该DCI所调度的子帧包括所述第二不完整子帧,则向所述UE发送配置的所述DCI之后,在所述第二不完整子帧内向所述UE传输用户数据。
- 如权利要求25或26所述的装置,其特征在于,若该DCI所调度的子 帧包括所述第一不完整子帧;则所述发送模块还用于,在向所述UE发送配置的所述DCI之前,在所述第一不完整子帧内向所述UE发送占位符;其中,所述占位符中包含指示该占位符传输结束的时间位置的指示位,用于指示所述UE缓存接收的从该占位符传输结束的时间位置到该第一不完整子帧的结束位置之间的所有数据,并基于后续接收的所述DCI,从缓存的所有数据中提取出所述用户数据。
- 如权利要求27所述的装置,其中,所述DCI中还包含指示在该第一不完整子帧内传输用户数据的起始时间位置的信息。
- 如权利要求27所述的装置,其中,所述DCI中还包含指示在该第一不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在该第一不完整子帧内传输用户数据的OFDM符号数为14-d1,d1为在该第一不完整子帧内传输用户数据的起始时间位置;或者,在该第一不完整子帧内传输用户数据的OFDM符号数为预设数值。
- 如权利要求25或26所述的装置,其中,若该DCI所调度的子帧包括所述第二不完整子帧,则所述DCI中还包含指示在该第二不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在该第二不完整子帧内传输用户数据的OFDM符号数为预设数值。
- 如权利要求23所述的装置,其中,所述发送模块具体用于:在所述不完整子帧内,向所述UE发送配置的所述DCI。
- 如权利要求31所述的装置,其中,所述发送模块还用于:基于发送所述DCI的起始时间位置,发送小区特定参考信号CRS,以使所述UE基于所述CRS解调接收的DCI。
- 如权利要求31所述的装置,其中,所述发送模块还用于,向所述UE发送配置的DCI之前,在所述不完整子帧内,向所述UE发送占位符,所述占位符中包含指示传输所述DCI的起始时间位置的指示位。
- 如权利要求31所述的装置,其中,所述DCI中包含指示在所述不完整子帧内传输用户数据的正交频分复用OFDM符号数的信息;或者,在所述不 完整子帧内向所述UE传输用户数据的OFDM符号数为14-d2-P,d2为发送所述DCI的起始时间位置,P为在所述不完整子帧内传输DCI的OFDM符号数;或者,在所述不完整子帧内向所述UE传输用户数据的OFDM符号数为预设数值。
- 如权利要求34所述的装置,其中,若在所述不完整子帧内向所述UE传输用户数据的OFDM符号数为预设数值N,则在所述不完整子帧内传输DCI的OFDM符号数为14-d2-N。
- 一种数据传输装置,包括:接收模块,用于接收小区发送的下行控制信息DCI;获取模块,用于基于所述DCI,获取小区在占用的非授权频段的不完整子帧内传输的用户数据。
- 如权利要求36所述的装置,其中,所述接收模块具体用于:接收小区在占用的非授权频段的完整子帧内发送的DCI。
- 如权利要求37所述的装置,其中,所述DCI中包含指示该DCI所调度的子帧的信息,其中,该DCI所调度的子帧包括该DCI所在的完整子帧,以及与该DCI所在的完整子帧相邻的第一不完整子帧和/或第二不完整子帧;其中,所述第一不完整子帧为在该DCI所在的完整子帧之前的子帧,所述第二不完整子帧为在该DCI所在的完整子帧之后的子帧。
- 如权利要求38所述的装置,其中,所述获取模块具体用于:基于所述DCI,从缓存的所述小区在所述第一不完整子帧内传输的所有数据中提取用户数据;和/或,基于所述DCI,接收所述小区在所述第二不完整子帧内传输的用户数据。
- 如权利要求39所述的装置,其中,所述获取模块具体用于:在接收小区发送的DCI之前,接收小区在所述第一不完整子帧内发送的占位符;其中,所述占位符中包含指示该占位符传输结束的时间位置的指示位;缓存接收的从该占位符传输结束的时间位置到所述第一不完整子帧的结束位置之间的所有数据。
- 如权利要求36所述的装置,其中,所述接收模块具体用于:接收小区在所述不完整子帧内发送的DCI。
- 如权利要求41所述的装置,其中,所述获取模块具体用于:基于所述DCI,接收所述小区在所述不完整子帧内传输的用户数据。
- 如权利要求41所述的装置,其中,所述接收模块还用于:基于小区发送所述DCI的起始时间位置,接收小区特定参考信号CRS;基于所述CRS解调接收的DCI。
- 如权利要求41所述的装置,其中,所述接收模块还用于,接收所述DCI之前,接收小区在所述不完整子帧内发送的占位符,所述占位符中包含指示传输DCI的起始时间位置的指示位。
- 一种数据传输方法,包括:为用户设备UE配置下行控制信息DCI的传输配置信息;所述DCI用于指示该UE接收小区在占用的非授权频段的不完整子帧内传输的用户数据;所述传输配置信息包括小区在该不完整子帧内发送所述DCI的起始时间位置;将所述传输配置信息发送给所述UE,并基于所述DCI的传输配置信息,在占用的非授权频段的不完整子帧内发送所述DCI。
- 如权利要求45所述的方法,还包括:基于发送所述DCI的起始时间位置,发送小区特定参考信号CRS,以使所述UE基于所述CRS解调接收的DCI。
- 如权利要求45所述的方法,其中,将所述传输配置信息发送给所述UE,包括:在所述不完整子帧内,向所述UE发送占位符,所述占位符中包含指示传输所述DCI的起始时间位置的指示位。
- 如权利要求45所述的方法,其中,所述传输配置信息还包括发送所述DCI的正交频分复用OFDM符号数;向用户设备UE发送下行控制信息DCI的传输配置信息,包括:通过控制格式指示位CFI指示发送所述DCI的OFDM符号数。
- 一种数据传输方法,包括:接收基站发送的下行控制信息DCI的传输配置信息;所述DCI用于指示该UE接收小区在占用的非授权频段的不完整子帧内传输的用户数据;所述传输配置信息包括在小区在该不完整子帧内发送所述DCI的起始时间位置;基于所述DCI的传输配置信息,接收小区在占用的非授权频段的不完整子帧内发送的所述DCI。
- 如权利要求49所述的方法,还包括:基于小区发送所述DCI的起始时间位置,接收小区特定参考信号CRS;基于接收的所述CRS,对接收的所述DCI进行解调。
- 一种数据传输装置,包括:配置模块,用于为用户设备UE配置下行控制信息DCI的传输配置信息;所述DCI用于指示该UE接收小区在占用的非授权频段的不完整子帧内传输的用户数据;所述传输配置信息包括小区在该不完整子帧内发送所述DCI的起始时间位置;发送模块,用于将所述传输配置信息发送给所述UE,并基于所述DCI的传输配置信息,在占用的非授权频段的不完整子帧内发送所述DCI。
- 如权利要求51所述的装置,其中,所述发送模块还用于:基于发送所述DCI的起始时间位置,发送小区特定参考信号CRS,以使所述UE基于所述CRS解调接收的DCI。
- 如权利要求51所述的装置,其中,所述发送模块具体用于:在所述不完整子帧内,向所述UE发送占位符,所述占位符中包含指示传输所述DCI的起始时间位置的指示位。
- 如权利要求51所述的装置,其中,所述传输配置信息还包括发送所述DCI的正交频分复用OFDM符号数;所述发送模块具体用于:通过控制格式指示位CFI指示发送所述DCI的OFDM符号数。
- 一种数据传输装置,包括:第一接收模块,用于接收基站发送的下行控制信息DCI的传输配置信息; 所述DCI用于指示该UE接收小区在占用的非授权频段的不完整子帧内传输的用户数据;所述传输配置信息包括在小区在该不完整子帧内发送所述DCI的起始时间位置;第二接收模块,用于基于所述DCI的传输配置信息,接收小区在占用的非授权频段的不完整子帧内发送的所述DCI。
- 如权利要求55所述的装置,其中,所述第二接收模块还用于:基于小区发送所述DCI的起始时间位置,接收小区特定参考信号CRS;基于接收的所述CRS,对接收的所述DCI进行解调。
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| CN108809566A (zh) * | 2017-05-04 | 2018-11-13 | 株式会社Ntt都科摩 | 不完整子帧的传输和解调方法、相应的用户设备和基站 |
| CN110167160B (zh) * | 2018-02-13 | 2022-01-04 | 北京紫光展锐通信技术有限公司 | 一种信道资源分配方法及计算机可读存储介质和终端 |
| WO2020000447A1 (zh) * | 2018-06-29 | 2020-01-02 | 北京小米移动软件有限公司 | 传输信息的方法和装置、基站及用户设备 |
| WO2020087466A1 (zh) * | 2018-11-01 | 2020-05-07 | 北京小米移动软件有限公司 | 传输信息的方法、装置、基站及终端 |
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| US20080102957A1 (en) * | 2006-10-26 | 2008-05-01 | Kevin Burman | Apparatus, processes and articles for facilitating mobile gaming |
| CN104301273A (zh) * | 2014-08-25 | 2015-01-21 | 中兴通讯股份有限公司 | 使用非授权载波发送及接收信号的方法、基站及用户设备 |
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| US20080102957A1 (en) * | 2006-10-26 | 2008-05-01 | Kevin Burman | Apparatus, processes and articles for facilitating mobile gaming |
| CN104301273A (zh) * | 2014-08-25 | 2015-01-21 | 中兴通讯股份有限公司 | 使用非授权载波发送及接收信号的方法、基站及用户设备 |
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