WO2017049988A1 - Method and device for data transmission and receiving - Google Patents

Abstract

Disclosed are a method and device for data transmission and receiving, comprising: determining a discovery measurement timing configuration (DMTC) window according to the configuration information; and transmitting, receiving and detecting data in a short sub-frame format in the discovery measurement timing configuration window, wherein the short sub-frame format represents that the last N Orthogonal Frequency Division Multiplexing (OFDM) signals in the sub-frame are not occupied in the sub-frame for data transmission, where N is an integer greater than or equal to 1. The present invention can support the multiplexing transmission of downlink data and discovery reference signal in the discovery measurement timing configuration window.

Description

Data transmitting and receiving method and device

The present application claims priority to Chinese Patent Application No. 201510624901.2, entitled "A Data Transmission and Receiving Method and Apparatus", filed on September 25, 2015, the entire contents of which are incorporated herein by reference. In the application.

Technical field

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

Background technique

The LTE (Long Term Evolution) system will support the deployment of transmissions on unlicensed spectrum resources to improve user experience and extend coverage. In order to support users to discover and measure unlicensed spectrum resources, it is necessary to transmit a DRS (discovery reference signal) on a carrier of an unlicensed band.

The LTE system has determined that a DMTC (discovery measurement timing configuration) window is configured for the user on the unlicensed spectrum, and the base station transmits the DRS in the DMTC window, and the user can detect the DRS signal in this time window.

The shortcoming of the prior art is that if the existing data transmission method is used, the downlink data and the demodulation pilot and the DRS cannot be multiplexed and transmitted in the DMTC window.

Summary of the invention

The invention provides a data transmitting and receiving method and device. It is used to support downlink data and DRS multiplex transmission in the DMTC window.

A data receiving method is provided in the embodiment of the present invention, including:

Receiving configuration information sent by the network side;

Determining a DMTC window according to the configuration information;

Data reception and detection are performed in a short subframe format in the DMTC window, where the short subframe format indicates that the last N OFDM symbols in the subframe are not occupied in the subframe for data transmission, where N is greater than or equal to 1 The integer.

Preferably, the pilot pattern transmitted in the short subframe format is a demodulation pilot pattern defined by the TDD system in the special subframe.

Preferably, if the number M of symbols occupied by the short subframe format is less than or equal to 3, a demodulation pilot pattern corresponding to 3/4/8/9 is configured in a special subframe under a normal CP;

If the number M of symbols occupied by the short subframe format is greater than 3 and less than or equal to 7, the demodulation pilot pattern corresponding to 1/2/6/7 is configured in a special subframe under the normal CP.

Preferably, the method further comprises:

The TBS size of the transmission is determined according to the number of OFDM symbols occupied by the short subframe format.

Preferably, determining the TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format, including:

Determining the transmitted TBS size according to the N' _PRB *q and the MCS level notified by the base station, where q is a preset adjustment coefficient, q is greater than 0 and less than or equal to 1, and the N' _PRB is the short subframe format notified by the base station. The number of PRBs occupied by the transport block.

A data sending method is provided in the embodiment of the present invention, including:

Sending configuration information of the DMTC window to the terminal side;

Data transmission is performed in a short subframe format in the DMTC window, where the short subframe format indicates that the last N OFDM symbols in the subframe are not occupied in the subframe for data transmission, where N is an integer greater than or equal to 1. .

Preferably, the pilot pattern transmitted in the short subframe format is a demodulation pilot pattern defined by the TDD system in the special subframe.

Preferably, if the number M of symbols occupied by the short subframe format is less than or equal to 3, a demodulation pilot pattern corresponding to 3/4/8/9 is configured in a special subframe under a normal CP;

If the number M of symbols occupied by the short subframe format is greater than 3 and less than or equal to 7, the demodulation pilot pattern corresponding to 1/2/6/7 is configured in a special subframe under the normal CP.

Preferably, the method further comprises:

The TBS size of the transmission is determined according to the number of OFDM symbols occupied by the short subframe format.

Preferably, determining the TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format, including:

Determining the transmitted TBS size according to the N' _PRB *q and the MCS level notified by the base station, where q is a preset adjustment coefficient, q is greater than 0 and less than or equal to 1, and the N' _PRB is the short subframe format notified by the base station. The number of PRBs occupied by the transport block.

An embodiment of the present invention provides a data receiving apparatus, including:

Configuring a receiving module, configured to receive configuration information sent by the network side;

a window determining module, configured to determine a DMTC window according to the configuration information;

a data receiving module, configured to perform data reception and detection according to a short subframe format in a DMTC window, where the short subframe format indicates that the last N OFDM symbols in the subframe are not occupied in the subframe for data transmission, where N is an integer greater than or equal to 1.

Preferably, the data receiving module is further configured to transmit a demodulation pilot pattern defined by the TDD system in the special subframe when the pilot pattern is transmitted in the short subframe format.

Preferably, the data receiving module is further configured to: if the number M of symbols occupied by the short subframe format is less than or equal to 3, use a demodulation guide corresponding to the special subframe configuration 3/4/8/9 under the normal CP. a frequency pattern; if the number M of symbols occupied by the short subframe format is greater than 3 and less than or equal to 7, the special subframe configuration 1/2/6/7 corresponding to the conventional CP is used. Demodulation pilot pattern.

Preferably, the data receiving module is further configured to determine a TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format.

Preferably, the data receiving module is further configured to determine, according to the N′ _PRB *q and the MCS level notified by the base station, the TBS size of the transmission when determining the TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format, where q is a preset adjustment coefficient, q is greater than 0 and less than or equal to 1, and the N' _PRB is the number of PRBs occupied by the transport block in the short subframe format notified by the base station.

An embodiment of the present invention provides a data sending apparatus, including:

Configuring a sending module, configured to send configuration information of the DMTC window to the terminal side;

a data sending module, configured to perform data transmission according to a short subframe format in a DMTC window, where the short subframe format indicates that the last N OFDM symbols in the subframe are not occupied in the subframe for data transmission, where N is An integer greater than or equal to 1.

Preferably, the data sending module is further configured to transmit the demodulation pilot pattern defined by the TDD system in the special subframe when the pilot pattern is transmitted in the short subframe format.

Preferably, the data sending module is further configured to: if the number M of symbols occupied by the short subframe format is less than or equal to 3, use a demodulation guide corresponding to the special subframe configuration 3/4/8/9 under the normal CP. If the number of symbols M occupied by the short subframe format is greater than 3 and less than or equal to 7, the demodulation pilot pattern corresponding to 1/2/6/7 is configured in a special subframe under the normal CP.

Preferably, the data receiving module is further configured to determine a TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format.

Preferably, the data receiving module is further configured to determine, according to the N′ _PRB *q and the MCS level notified by the base station, the TBS size of the transmission when determining the TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format, where q is a preset adjustment coefficient, q is greater than 0 and less than or equal to 1, and the N' _PRB is the number of PRBs occupied by the transport block in the short subframe format notified by the base station.

The beneficial effects of the present invention are as follows:

In the technical solution provided by the embodiment of the present invention, the data of the subframe data transmitted in the DMTC window is transmitted, received, and detected according to the short subframe format, and is transmitted in the subframe in the short subframe format. The data does not occupy the last N OFDM symbols in the subframe, but since the DMTC window is used to transmit DRS, and the last N symbols of the DRS subframe need to be reserved for LBT, it can support downlink data and DRS in the DMTC window. Multiplexed transmissions.

DRAWINGS

The drawings described herein are provided to provide a further understanding of the invention and constitute a part of the invention. The illustrative embodiments and the description thereof are intended to be illustrative of the present invention and are not intended to limit the invention. In the drawing:

1 is a schematic flowchart of implementing a data receiving method on a terminal side according to an embodiment of the present invention;

2 is a schematic flowchart of implementing a data sending method on a network side according to an embodiment of the present invention;

3a, 3b, and 3c are DMRS mapping diagrams of antenna ports 7, 8, 9, and 10 in the embodiment of the present invention, and a schematic diagram of a conventional CP;

4 is a DMRS mapping diagram of antenna ports 7, 8, 9, and 10 in multiplex transmission according to an embodiment of the present invention, and a schematic diagram of a conventional CP;

FIG. 5 is a schematic structural diagram of a data receiving apparatus according to an embodiment of the present invention; FIG.

6 is a schematic structural diagram of a data transmitting apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of a base station according to an embodiment of the present invention.

detailed description

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

The inventor noticed during the invention:

When the LTE system works on the carrier of the unlicensed band, in order to ensure fair sharing of spectrum resources with other devices or systems, the base station needs to perform LBT (listen before Talk) before sending the DRS. Therefore, in the DMTC window The last one or more symbols of each subframe within the frame are idle, and the base station does not send any signal.

Since the base station does not transmit signals on the unlicensed band resources within the last one or more OFDM (Orthogonal Frequency Division Multiplex) symbols of each subframe in the DMTC window, the existing data transmission method is used. Downlink data and demodulation pilots and DRS cannot be multiplexed in the DMTC window.

Based on this, in the embodiment of the present invention, a downlink data transmission scheme on an unlicensed carrier is provided to support downlink data and DRS multiplex transmission in the DMTC window. The following description will be made.

In the description process, the implementation from the terminal side and the network side will be respectively described. Since the demodulation pilot pattern and the TBS determination manner used in the short subframe format are the same on the network side and the terminal side, the terminal side implementation is mainly implemented. For the main description, the base station side will not repeat them one by one. Such a description does not mean that the two must be implemented together, or can only be implemented separately. In fact, when the terminal side and the network side are separately implemented, they respectively solve the problem of the terminal side and the network side, but when the two combine When used, you will get better technical results.

FIG. 1 is a schematic flowchart of a method for implementing data receiving on a terminal side, as shown in the figure, which may include:

Step 101: Receive configuration information sent by a network side.

Step 102: Determine a DMTC window according to the configuration information.

Step 103: Perform data reception and detection according to a short subframe format in a DMTC window, where the short subframe format indicates that the last N OFDM symbols in the subframe are not occupied in the subframe for data transmission, where N is greater than Or An integer equal to one.

2 is a schematic flowchart of an implementation process of a data sending method on a network side, as shown in the figure, which may include:

Step 201: Send configuration information of the DMTC window to the terminal side.

Step 202: Perform data transmission in a short subframe format in a DMTC window, where the short subframe format indicates that the last N OFDM symbols in the subframe are not occupied in the subframe for data transmission, where N is greater than or equal to An integer of 1.

In implementation, the pilot pattern transmitted in the short subframe format is a demodulation pilot pattern defined by the TDD system in the special subframe.

In a specific implementation, if the number M of symbols occupied by the short subframe format is less than or equal to 3, a demodulation pilot pattern corresponding to 3/4/8/9 is configured in a special subframe under a normal CP;

If the number M of symbols occupied by the short subframe format is greater than 3 and less than or equal to 7, the demodulation pilot pattern corresponding to 1/2/6/7 is configured in a special subframe under the normal CP.

Specifically, the demodulation pilot pattern defined by the TDD system in the special subframe may be used in the short subframe format. If N is less than or equal to 3, the special subframe configuration under the normal CP (Cyclic Prefix) may be used. /4/8/9 corresponding demodulation pilot pattern; if N is greater than 3 and less than or equal to 7, the demodulation pilot pattern corresponding to 1/2/6/7 can be configured using the special subframe under the normal CP.

In the implementation, it may further include:

The TBS size of the transmission is determined according to the number of OFDM symbols occupied by the short subframe format.

In a specific implementation, determining the TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format, including:

Determining the transmitted TBS size according to the N' _PRB *q and the MCS level notified by the base station, where q is a preset adjustment coefficient, q is greater than 0 and less than or equal to 1, and the N' _PRB is the short subframe format notified by the base station. The number of PRBs occupied by the transport block.

Specifically, the terminal selects a TBS (Transport Block Set) size to be transmitted according to the number of occupied OFDM symbols in the short subframe format. Preferably, the adjustment coefficient q is predefined, according to N′ _PRB * q and the MCS (Modulation and Coding Scheme) level notified by the base station in the protocol 36.213 to determine the TBS used, where q is greater than 0 and less than or equal to 1, and the N' _PRB is occupied by the transport block notified by the base station. The number of PRBs.

In the following, the specific transmission method in the DMTC window will be described with reference to the example. The description will first introduce the frame structure in LTE, then explain the demodulation pilot in LTE, and finally implement the transmission in the DMTC window. description.

1. Frame structure in LTE system

In the LTE system, FDD (Frequency Division Duplex) mode and TDD (Time Division) Duplex, time division duplex mode is a radio frame of 10ms and a subframe of 1ms. For each radio frame of the TDD mode, seven types of TDD uplink and downlink configurations are defined, as shown in Table 1, where D represents a DL (Down Link) subframe, and U represents a UL (Up-Link) subframe. , S represents a special subframe of the TDD system, and the special subframe includes a DwPTS (Downlink Pilot Time Slot), a GP (Guard Period), and an UpPTS (Uplink Pilot Time Slot). The three areas, wherein the DwPTS is used for transmitting the downlink primary synchronization signal and the normal downlink service data, the GP is the protection interval, and the UpPTS is used for transmitting the uplink random access signal and the uplink detection signal.

Table 1: TDD uplink and downlink configuration

2. Demodulation pilot in LTE system

The DMRS (Demodulation Reference Signal) in the LTE is transmitted only on the Physical Resource Block (PRB) transmitted in the transmission mode 7 to 10 to reduce the reference symbol overhead, save energy, and reduce neighboring cells. Interference. On other physical channels or REs (resource elements) occupied by physical signals (except DMRS), no matter which antenna port p they use, no DMRS is transmitted on the RE. 3a, 3b, and 3c are DMRS maps of antenna ports 7, 8, 9, and 10, and a schematic diagram of a conventional CP, where the DMRS of each antenna port is located in a PRB as shown in FIG. 3a, FIG. 3b, and FIG. 3c. .

3. Implementation of the transmission scheme in the DMTC window

In the DMTC window, the DRS in each subframe occupies 12 OFDM symbols for data transmission, and the last two OFDM are idle. The DRS in each subframe includes CRS (Cell-specific reference signals), CSI-RS (channel state information reference signal), and symbols 5 and 6 are transmitted. SSS (Secondary Synchronization Signal) and PSS (Primary Synchronization Signal), the RE positions in the middle 6 PRBs are available. To transmit a broadcast channel. To support the multiplexed transmission of the PDSCH (Physical Downlink Shared Channel) and the DRS in the same subframe, FIG. 4 is a DMRS map of the antenna ports 7, 8, 9, and 10 in the multiplex transmission. A conventional CP diagram, as shown in FIG. 4, can be used in a PRB/EPDCCH (Enhanced Physical Downlink Control Channel) PRB in a special subframe configuration of a conventional CP. 3/4/8/9 Demodulation pilot pattern, PDCCH (physical downlink control channel) is transmitted in symbol 0 and symbol 1, and PDSCH or EPDCCH is transmitted in symbols 2-11.

The terminal side first obtains the DMTC window configuration information according to the configuration information of the network side base station, determines which subframes are located in the DMTC window, and only receives the data information in the first 12 OFDM symbols in the subframes, and then configures according to the special subframe 3/. The demodulation pilot pattern corresponding to 4/8/9 determines the pilot position and performs channel estimation and demodulation.

When determining the TBS size, assuming that the predefined adjustment coefficient q is 0.75, the terminal first determines the N' _PRB and MCS levels according to the DCI (Downlink Control Information) notified by the base station, and then uses N' _PRB *0.75 and MCS. The level is determined in the protocol 36.213 to determine the TBS used.

It should be noted that, in a specific implementation, on an unlicensed carrier, the DRS pattern in the DMTC window may be different from the above definition, but as long as there are idle N OFDM symbols at the end, the above scheme can be used to support DRS and data and solutions. The multiplexed transmission of the pilot frequency.

The implementation on the terminal side is described above. Correspondingly, on the network side base station, the configuration information of the DMTC window is sent to the terminal, and the downlink data is transmitted in the short subframe format in the subframes in the DMTC window. The demodulation pilot pattern and the TBS determination method used in the short subframe format are consistent with the terminal side, and will not be described again.

Based on the same inventive concept, an embodiment of the present invention further provides a data receiving device and a data transmitting device. The principle of solving the problem is similar to a data receiving method and a data transmitting method. Implementation can refer to the implementation of the method, and the repetition will not be repeated.

FIG. 5 is a schematic structural diagram of a data receiving apparatus, as shown in the figure, including:

The receiving module 501 is configured to receive configuration information sent by the network side.

a window determining module 502, configured to determine a DMTC window according to the configuration information;

The data receiving module 503 is configured to perform data reception and detection according to a short subframe format in a DMTC window, where the short subframe format indicates that the last N OFDM symbols in the subframe are not occupied in the subframe for data transmission, Where N is an integer greater than or equal to 1.

In an implementation, the data receiving module is further configured to: when the pilot pattern is transmitted in the short subframe format, transmit a demodulation pilot pattern defined by the TDD system in the special subframe.

In an implementation, the data receiving module is further configured to: if the number M of symbols occupied by the short subframe format is less than or equal to 3, use a demodulation pilot corresponding to a special subframe configuration 3/4/8/9 under a normal CP. If the number of symbols M occupied by the short subframe format is greater than 3 and less than or equal to 7, the demodulation pilot pattern corresponding to 1/2/6/7 is configured in a special subframe under the normal CP.

In an implementation, the data receiving module is further configured to determine a TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format.

In an implementation, the data receiving module is further configured to determine, according to the N′ _PRB *q and the MCS level notified by the base station, the TBS size of the transmission when determining the TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format, where q is a preset adjustment coefficient, q is greater than 0 and less than or equal to 1, and the N' _PRB is the number of PRBs occupied by the transport block in the short subframe format notified by the base station.

6 is a schematic structural diagram of a data transmitting apparatus, as shown in the figure, including:

The sending module 601 is configured to send configuration information of the DMTC window to the terminal side;

The data sending module 602 is configured to perform data transmission according to the short subframe format in the DMTC window, where the short subframe format indicates that the last N OFDM symbols in the subframe are not occupied in the subframe for data transmission, where Is an integer greater than or equal to 1.

In an implementation, the data sending module is further configured to transmit a demodulation pilot pattern defined by the TDD system in the special subframe when the pilot pattern is transmitted in the short subframe format.

In an implementation, the data sending module is further configured to: if the number M of symbols occupied by the short subframe format is less than or equal to 3, use a demodulation pilot corresponding to a special subframe configuration 3/4/8/9 under a normal CP. If the number of symbols M occupied by the short subframe format is greater than 3 and less than or equal to 7, the demodulation pilot pattern corresponding to 1/2/6/7 is configured in a special subframe under the normal CP.

In an implementation, the data receiving module is further configured to determine a TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format.

In an implementation, the data receiving module is further configured to determine, according to the N′ _PRB *q and the MCS level notified by the base station, the TBS size of the transmission when determining the TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format, where q is a preset adjustment coefficient, q is greater than 0 and less than or equal to 1, and the N' _PRB is the number of PRBs occupied by the transport block in the short subframe format notified by the base station.

For convenience of description, the various parts of the above described devices are described in terms of functions divided into various modules or units. Of course, the functions of the various modules or units may be implemented in one or more software or hardware in the practice of the invention.

When the technical solution provided by the embodiment of the present invention is implemented, it can be implemented as follows.

FIG. 7 is a schematic structural diagram of a terminal. As shown in the figure, the terminal includes:

The processor 700 is configured to read a program in the memory 720 and perform the following process:

Determining a DMTC window according to the configuration information;

The transceiver 710 is configured to send data under the control of the processor 700, and performs the following processes:

Receiving configuration information sent by the network side;

Data reception and detection are performed in a short subframe format in the DMTC window, where the short subframe format indicates that the last N OFDM symbols in the subframe are not occupied in the subframe for data transmission, where N is greater than or equal to 1 of Integer.

In implementation, the pilot pattern transmitted in the short subframe format is a demodulation pilot pattern defined by the TDD system in the special subframe.

In an implementation, if the number M of symbols occupied by the short subframe format is less than or equal to 3, a demodulation pilot pattern corresponding to 3/4/8/9 is configured in a special subframe under a normal CP;

If the number M of symbols occupied by the short subframe format is greater than 3 and less than or equal to 7, the demodulation pilot pattern corresponding to 1/2/6/7 is configured in a special subframe under the normal CP.

In implementation, it further includes:

The TBS size of the transmission is determined according to the number of OFDM symbols occupied by the short subframe format.

In the implementation, determining the TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format, including:

Determining the transmitted TBS size according to the N' _PRB *q and the MCS level notified by the base station, where q is a preset adjustment coefficient, q is greater than 0 and less than or equal to 1, and the N' _PRB is the short subframe format notified by the base station. The number of PRBs occupied by the transport block.

Here, in FIG. 7, the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 700 and various circuits of memory represented by memory 720. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 710 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium. For different user equipments, the user interface 730 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 can store data used by the processor 700 in performing operations.

FIG. 8 is a schematic structural diagram of a base station, as shown in the figure, the base station includes:

The processor 800 is configured to read a program in the memory 820 and perform the following process:

Determining configuration information of the DMTC window;

The transceiver 810 is configured to send data under the control of the processor 800, and performs the following processes:

Sending configuration information of the DMTC window to the terminal side;

Data transmission is performed in a short subframe format in the DMTC window, where the short subframe format indicates that the last N OFDM symbols in the subframe are not occupied in the subframe for data transmission, where N is an integer greater than or equal to 1. .

In implementation, the pilot pattern transmitted in the short subframe format is a demodulation pilot pattern defined by the TDD system in the special subframe.

In an implementation, if the number M of symbols occupied by the short subframe format is less than or equal to 3, a demodulation pilot pattern corresponding to 3/4/8/9 is configured in a special subframe under a normal CP;

If the number M of symbols occupied by the short subframe format is greater than 3 and less than or equal to 7, the demodulation pilot pattern corresponding to 1/2/6/7 is configured in a special subframe under the normal CP.

In implementation, it further includes:

The TBS size of the transmission is determined according to the number of OFDM symbols occupied by the short subframe format.

In the implementation, determining the TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format, including:

Determining the transmitted TBS size according to the N' _PRB *q and the MCS level notified by the base station, where q is a preset adjustment coefficient, q is greater than 0 and less than or equal to 1, and the N' _PRB is the short subframe format notified by the base station. The number of PRBs occupied by the transport block.

Wherein, in FIG. 8, the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 800 and various circuits of memory represented by memory 820. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. Transceiver 810 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor 800 is responsible for managing the bus architecture and general processing, and the memory 820 can store data used by the processor 800 in performing operations.

In summary, in the embodiment of the present invention, a scheme for transmitting data and demodulating pilots using a short subframe format in a DMTC window is provided. Further, a data transmission scheme within the DMTC window on the unlicensed carrier is also provided.

The downlink data transmission scheme on the unlicensed carrier according to the embodiment of the present invention can support the multiplexed transmission of the downlink data and the DRS in the DMTC window.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) including computer usable program code.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

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 include instructions. In the case of an article of manufacture, the instruction means implements the functions specified in a block or blocks of a flow or a flow and/or a 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.

It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of the invention

Claims (20)

A data receiving method, comprising: Receiving configuration information sent by the network side; Determining a discovery measurement time configuration DMTC window according to the configuration information; Performing data reception and detection according to a short subframe format in the DMTC window, where the short subframe format indicates that the last N orthogonal frequency division multiplexing OFDM symbols in the subframe are not occupied in the subframe for data transmission Where N is an integer greater than or equal to one. The method according to claim 1, wherein the pilot pattern transmitted in the short subframe format is a demodulation pilot pattern defined by a time division duplex TDD system in a special subframe. The method of claim 2 wherein If the number M of symbols occupied by the short subframe format is less than or equal to 3, the demodulation pilot pattern corresponding to 3/4/8/9 is configured in a special subframe under the regular cyclic prefix CP; If the number M of symbols occupied by the short subframe format is greater than 3 and less than or equal to 7, the demodulation pilot pattern corresponding to 1/2/6/7 is configured in a special subframe under the normal CP. The method of claim 1 further comprising: The transmitted transport block set TBS size is determined according to the number of OFDM symbols occupied by the short subframe format. The method according to claim 4, wherein determining the TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format comprises: Determining the transmitted TBS size according to the N' _PRB *q and the modulation coding mode MCS level notified by the base station, where q is a preset adjustment coefficient, q is greater than 0 and less than or equal to 1, and the N' _PRB is the short _message notified by the base station. The number of physical resource blocks PRB occupied by the transport block in the subframe format. A data sending method, comprising: Sending configuration information of the DMTC window to the terminal side; Transmitting data according to a short subframe format in the DMTC window, where the short subframe format indicates that the last N OFDM symbols in the subframe are not occupied in the subframe for data transmission, where N is greater than or equal to 1 The integer. The method according to claim 6, wherein the pilot pattern transmitted in the short subframe format is a demodulation pilot pattern defined by a TDD system in a special subframe. The method of claim 7 wherein: If the number M of symbols occupied by the short subframe format is less than or equal to 3, the demodulation pilot pattern corresponding to 3/4/8/9 is configured in a special subframe under the normal CP; If the number of symbols M occupied by the short subframe format is greater than 3 and less than or equal to 7, the conventional CP is used. The special subframe configures the demodulation pilot pattern corresponding to 1/2/6/7. The method of claim 6 further comprising: The TBS size of the transmission is determined according to the number of OFDM symbols occupied by the short subframe format. The method according to claim 9, wherein determining the TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format comprises: Determining the transmitted TBS size according to the N' _PRB *q and the MCS level notified by the base station, where q is a preset adjustment coefficient, q is greater than 0 and less than or equal to 1, and the N' _PRB is the short subframe format notified by the base station. The number of PRBs occupied by the transport block. A data receiving device, comprising: Configuring a receiving module, configured to receive configuration information sent by the network side; a window determining module, configured to determine a DMTC window according to the configuration information; a data receiving module, configured to perform data reception and detection according to a short subframe format in the DMTC window, where the short subframe format indicates that the last N OFDM symbols in the subframe are not occupied in the subframe for data transmission Where N is an integer greater than or equal to one. The apparatus according to claim 11, wherein the data receiving module is further configured to transmit a demodulation pilot pattern defined by the TDD system in the special subframe when the pilot pattern is transmitted in the short subframe format. The apparatus according to claim 12, wherein the data receiving module is further configured to: when the number M of symbols occupied by the short subframe format is less than or equal to 3, use a special subframe configuration of the conventional CP 3/4 /8/9 corresponding demodulation pilot pattern; if the number of symbols occupied by the short subframe format is greater than 3 and less than or equal to 7, the special subframe configuration 1/2/6/7 is used under the conventional CP. Corresponding demodulation pilot pattern. The apparatus according to claim 11, wherein the data receiving module is further configured to determine a TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format. The apparatus according to claim 14, wherein the data receiving module is further configured to: when determining the TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format, according to N' _PRB *q and the base station notifying The MCS level determines the TBS size of the transmission, where q is a preset adjustment coefficient, q is greater than 0 and less than or equal to 1, and the N' _PRB is the number of PRBs occupied by the transport block in the short subframe format notified by the base station. A data transmitting device, comprising: Configuring a sending module, configured to send configuration information of the DMTC window to the terminal side; a data sending module, configured to perform data transmission according to a short subframe format in the DMTC window, where the short subframe format indicates that the last N OFDM symbols in the subframe are not occupied in the subframe for data transmission, where N is an integer greater than or equal to 1. The apparatus according to claim 16, wherein the data transmitting module is further configured to transmit a demodulation pilot pattern defined by the TDD system in the special subframe when the pilot pattern is transmitted in the short subframe format. The apparatus according to claim 17, wherein the data sending module is further configured to: when the number M of symbols occupied by the short subframe format is less than or equal to 3, use a special subframe configuration of the conventional CP 3/4 /8/9 corresponding demodulation pilot pattern; if the number of symbols occupied by the short subframe format is greater than 3 and less than or equal to 7, the special subframe configuration 1/2/6/7 is used under the conventional CP. Corresponding demodulation pilot pattern. The apparatus according to claim 16, wherein the data receiving module is further configured to determine a TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format. The apparatus according to claim 19, wherein the data receiving module is further configured to: when determining the TBS size of the transmission according to the number of OFDM symbols occupied by the short subframe format, according to N' _PRB *q and the base station notifying The MCS level determines the TBS size of the transmission, where q is a preset adjustment coefficient, q is greater than 0 and less than or equal to 1, and the N' _PRB is the number of PRBs occupied by the transport block in the short subframe format notified by the base station.

Images