CN107295682B - A downlink data transmission and detection method, device, related equipment and system - Google Patents

Abstract

The invention discloses a downlink data transmission method, device, related equipment and system, which are used to ensure the reliability of downlink data reception of UEs that allocate resources first when resources collide with different UE services. The downlink data transmission method includes: transmitting downlink data on time-frequency resources scheduled by a user terminal UE, the downlink data including an identifier for identifying time-frequency resources allocated to the UE but occupied by other UEs data.

Description

A downlink data transmission and detection method, device, related equipment and system

technical field

The present invention relates to the technical field of wireless communication, and in particular, to a downlink data transmission method, device, related equipment and system.

Background technique

In the Long Time Evolution (LTE, Long Time Evolution) R8/R9/R10 system, in a time transmission interval (TTI, Transmission Time Internal), the first few orthogonal frequency division multiplexing (OFDM, Orthogonal Frequency Division Multiplexing) symbols are used for For the transmission of the Physical Downlink Control Channel (PDCCH, Physical Downlink Control Channel), the following OFDM symbols are used for data transmission. In the traditional LTE system, depending on the system configuration, for a system with a larger bandwidth (the downlink system has more than 10 Physical Resource Blocks (PRB, Physical Resource Block)), the PDCCH may occupy 1-3 OFMD symbols; for a system with a smaller bandwidth (The downlink system is less than or equal to 10 PRBs), occupying 2-4 OFDM symbols. This is because the number of subcarriers on each OFDM symbol is small, so more symbols are required to carry the control information in the PDCCH. As shown in FIG. 1 , it is a schematic diagram of OFDM symbols occupied by PDCCH and data channel in traditional LTE, wherein the abscissa represents the OFDM symbol sequence number, and the ordinate represents frequency domain resources. In FIG. 1 , PDCCH occupies 3 OFDM symbols.

With the development of mobile communication technology, in 5G (fifth generation mobile communication technology) communication system, it is required to support enhanced mobile broadband (eMMB) service, massive low-power connection (mMTC) service and low-latency high-reliability connection ( URLLC) services, etc. These services have different sensitivities to data transmission delay. URLLC services require very high real-time performance, while eMMB services are relatively insensitive to transmission delays, but in order to ensure the compatibility and simplification of the communication system for each service In the future communication network construction and operation, the following two unified air interface design schemes are proposed: the first scheme is to divide different services into different frequency domain resources, and this design scheme has low utilization rate of frequency domain resources; The second solution is to not divide words, and mix all available resources for different businesses. In the second design scheme, although the resource utilization rate is high, different services have different requirements for data transmission delay. For example, uMTC has high requirements for delay and requires scheduling at any time. Therefore, when there are uMTC services that need to be scheduled, Even if the current resource has been allocated to other user equipment (for the convenience of description, it is assumed that the UE is an eMMB UE (UE, User Equipment)), the allocated resource needs to be occupied to ensure the transmission of the uMTC service, which brings about resource collision question. Since in the existing downlink data transmission scheme, the PDCCH is sent before the physical downlink shared channel (PDSCH, Physical Downlink Shared Channel) transmission, the UE first detects the PDCCH to obtain the PDSCH resource scheduling and allocation information, and then performs data detection, but if there is a mMTC service When scheduling is required, the resources allocated to the eMMB UE will be occupied, resulting in resource collision. If the eMMB UE still detects the resources to receive downlink data, it may cause errors in the received downlink data, affecting the downlink data received by the UE. reliability.

SUMMARY OF THE INVENTION

The embodiments of the present invention provide a downlink data transmission method, apparatus, related equipment and system, which are used to ensure the reliability of downlink data reception by the UE that allocates resources first when resources collide with different UE services.

An embodiment of the present invention provides a downlink data transmission method, including:

Downlink data is transmitted on the time-frequency resources scheduled by the user terminal UE, and the downlink data includes identification data for identifying the time-frequency resources allocated for the UE but occupied by other UEs.

An embodiment of the present invention provides a downlink data detection method, including:

receiving downlink data transmitted by the network side, where the downlink data includes identification data for identifying time-frequency resources occupied by other UEs;

According to the identification data, data detection is performed on time-frequency resource positions other than time-frequency resource positions occupied by other UEs among the time-frequency resource positions initially allocated by the network side.

An embodiment of the present invention provides a downlink data transmission device, including:

A transmission unit, configured to transmit downlink data on the time-frequency resources scheduled by the user terminal UE, where the downlink data includes identification data for identifying the time-frequency resources allocated for the UE but occupied by other UEs.

An embodiment of the present invention provides a base station, including the above-mentioned downlink data transmission apparatus.

An embodiment of the present invention provides a downlink data detection device, including:

a receiving unit, configured to receive downlink data transmitted by the network side, where the downlink data includes identification data for identifying time-frequency resources occupied by other UEs;

A detection unit, configured to perform data detection on time-frequency resource positions other than time-frequency resources occupied by other UEs among the time-frequency resource positions initially allocated by the network side according to the identification data.

An embodiment of the present invention provides a terminal, including the above-mentioned downlink data detection apparatus.

An embodiment of the present invention provides a downlink data transmission system, including the above-mentioned base station and terminal.

In the downlink data transmission and detection method, device, related equipment, and system provided by the embodiments of the present invention, the downlink data sent by the network side to the terminal includes identification data indicating time-frequency resources occupied by other UEs. When detecting the received downlink data, the location of the time-frequency resources occupied by other UEs may not be detected according to the identification data transmitted by the network side, which avoids the terminal from obtaining erroneous data due to detecting the location of resources occupied by other UEs, thereby improving the performance of the network. Reliability of terminal data reception.

Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description, claims, and drawings.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

1 is a schematic diagram of the occupation of PDCCH and data channel OFDM symbols in an LTE system in the prior art;

FIG. 2 is a schematic flowchart of an implementation of a downlink data transmission method in an embodiment of the present invention;

3a is a schematic diagram of a first identification data in an embodiment of the present invention;

3b is a schematic diagram of a second type of identification data in an embodiment of the present invention;

FIG. 3c is a schematic diagram of time-frequency resources allocated by the network side to the UE initially, in an embodiment of the present invention;

3d is a schematic diagram of resource occupation of the first extension in an embodiment of the present invention;

3e is a schematic diagram of resource occupation of the second type of extension in an embodiment of the present invention;

3f is a schematic diagram of resource occupation of a third extension in an embodiment of the present invention;

4 is a schematic flowchart of an implementation of a downlink data detection method in an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a downlink data transmission apparatus in an embodiment of the present invention;

6 is a schematic structural diagram of an apparatus for detecting downlink data in an embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a downlink data transmission system in an embodiment of the present invention.

Detailed ways

In order to ensure the reliability of terminal data reception in an application scenario where resource collision occurs, embodiments of the present invention provide a downlink data transmission method, apparatus, related equipment and system.

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, but not to limit the present invention, and in the case of no conflict, the present invention The embodiments in and features in the embodiments can be combined with each other.

In the downlink data transmission method provided by the embodiment of the present invention, the downlink data sent by the network side to the UE (User Equipment, user terminal) may include identification data indicating time-frequency resources allocated to the UE but occupied by other UEs. Therefore, if the resources allocated to a certain UE are occupied by other UEs, the UE can be instructed by the identification data. After receiving the downlink data sent by the network side, the UE does not detect the resources occupied by other UEs according to the identification data, thereby avoiding This avoids data reception errors caused by the UE performing data detection on resources allocated to other UEs, thereby ensuring the reliability of data reception by the UE.

After the principle of the present invention is introduced, the following describes an implementation process of the downlink data transmission method provided by the embodiment of the present invention with reference to FIG. 2 .

As shown in FIG. 2, the downlink data transmission method provided by the embodiment of the present invention may include the following steps:

S21. Generate downlink data to be transmitted for the UE.

If the network side determines that the time-frequency resource allocated to the UE is occupied because it needs to be scheduled for other UEs, the downlink data generated in step S21 also needs to include a resource used to identify the UE originally allocated to the UE but occupied by other UEs. Identification data of the time-frequency resource.

S22. Downlink data is transmitted on the time-frequency resource scheduled by the UE.

Specifically, in step S22, the downlink data generated in step S21 can be mapped to the time-frequency resources scheduled for the UE (it should be understood that the time-frequency resources here should be time-frequency resources other than those occupied by other UEs) ), that is, in step S22, the downlink data transmitted by the network side to the UE includes identification data for identifying the time-frequency resources allocated for the UE but occupied by other UEs.

Optionally, during specific implementation, before the network side executes step S21, it can also judge whether the resources allocated by the UE are occupied by other UEs, and if it is judged that the resources allocated for the UE are occupied by other UEs, the generation process includes the above. The downlink data of the identification data is transmitted to the terminal. For example, when the network side determines that the resources allocated to the UE are occupied due to the need to schedule resources for the URLLC UE, it generates downlink data including identification data in step S21, and sends the generated downlink data to the terminal in step S22. If the resources allocated to the UE are not occupied, the network side can send the PDCCH to the user according to the prior art.

Preferably, the embodiment of the present invention provides the following two implementation manners for identifying the time-frequency resources occupied by other UEs, which will be introduced separately below.

The first embodiment, the identification data is used to identify the start and end positions of the time-frequency resources occupied by other UEs

In this implementation manner, the network side may use a specific symbol sequence or specific symbol feature agreed with the UE to identify the time-frequency resources occupied by other UEs.

For the convenience of description, the set of frequency domain resources originally allocated for the UE is denoted as Fset, and the OFDM symbol allocated for the UE is denoted as Oset. Taking FIG. 1 as an example, it is assumed that Fset={f ₁ , f ₂ ,...f ₁₆ , f ₁₇ }, Oset={K, K+1, K+2, ... K+13}.

At a certain scheduling moment, since the network side needs to schedule resources for the URLLC UE, the frequency domain resources {f ₃ , f ₄ , f ₅ ...... f ₁₄ , f ₁₅ }, OFDM symbols {K+4, K+5, K +6} The corresponding resource is scheduled to the URLLC UE, then the network side can use the specific symbol sequence agreed with the UE to identify the resource location occupied by other UEs. Taking the network side scheduling resources corresponding to frequency domain resources {f ₃ , f ₄ , f ₅ ...... f ₁₄ , f ₁₅ } and OFDM symbols {K+4, K+5, K+6} to the URLLC UE as an example, As shown in Fig. 3a, the resource area occupied by the URLLC UE is a rectangle (the grid pattern area in Fig. 3a), then the network side can identify the resource positions on the diagonal or the four corners of the rectangle to let the UE know Time-frequency resources allocated to URLLC UEs.

For example, the network side respectively identifies the resource block corresponding to the frequency domain resource _f16 and the OFDM symbol sequence number K+ ₆ and the resource block corresponding to the frequency domain resource f2 and the OFDM symbol sequence number K+4 (as shown by the gray pattern in Figure 3a). or the network side identifies the resource block corresponding to K+ ₄ , the frequency domain resource _f16 and the OFDM symbol sequence number are the resource blocks corresponding to K+ ₆ , the frequency domain resource f2 and The resource block corresponding to the OFDM symbol sequence number K+ ₄ and the resource block corresponding to the frequency domain resource f2 and the OFDM symbol sequence number K+6 (as shown by the gray pattern in Figure 3b, the grid pattern area in Figure 3b is the URLLC UE resources occupied). In this way, when the UE detects the received downlink data, it can skip the rectangular area identified by the network side to detect the remaining areas.

In the second embodiment, the identification data is transmitted using a specific symbol sequence or specific symbol characteristics agreed with the UE and using different transmission powers for the identification data.

In this implementation manner, it can be implemented in the following manner: the network side transmits identification data and other downlink data by using different transmission powers. That is, in the second embodiment, on the basis of the first embodiment, the identification data (ie, the specific symbol sequence or specific symbol characteristics in the first embodiment) is transmitted using a transmission power different from that of other downlink data. For example, the transmission power of the identification data may be greater than the transmission power of the downlink data transmitted for the UE, that is, the network side uses the first power to transmit the identification data, and uses the second power to transmit the rest of the downlink data except the identification data. The power is greater than the second power.

Preferably, during specific implementation, if the resources allocated to the UE are occupied by other UEs, the network side can also schedule compensation resources for the UE to supplement the downlink transmission by the time-frequency resources occupied by other UEs to the UE. data. Based on this, the network side can also indicate, through the identification data, information that needs to be transmitted for the UE for compensation or data that cannot be reliably detected.

During the specific implementation, if the TTI (transmission time interval) of the UE is not fixed, the network side can also extend the time-frequency resources allocated to the UE according to the time-frequency information of the resources occupied by other UEs to compensate for the time-frequency resources allocated by the UE. Information that is occupied by other UEs but not transmitted or that cannot be detected reliably. The time-frequency information of resources occupied by other UEs includes time domain information and frequency domain information of resources occupied by other UEs.

Taking the time-frequency resources allocated by the network side to the UE initially, the OFDM sequence numbers range from (K+3) to (K+4), and the frequency domain occupies f1-f9 as an example, the schematic diagram of resource allocation of the UE is shown in Figure 1. The resources occupied by other UEs are shown in Fig. 3c (grid area in Fig. 3c). The network side can extend the time-frequency resources allocated to the UE accordingly. In this example, the network side can extend the time-frequency resources allocated to the UE by two OFDM symbols, that is, the network side can extend the time-frequency resources for the UE. The OFDM sequence numbers are from (K+14) to (K+15), and the frequency domain occupies f1-f9. The schematic diagram of the resource occupation of the extension is shown in Figure 3d (the gray part of Figure 3d).

Preferably, the network side can extend the time-frequency resources allocated for the UE backward by a corresponding time length according to the time domain information of the resources occupied by other UEs, that is, the time length occupied by the extended time-frequency resources is the same as the initial allocation time. The length of time occupied by the frequency resources is the same. That is, the network side can make corresponding expansion in the time domain based on the time domain information of the occupied resources. For example, if the 2 OFDM symbols initially allocated to the UE by the network side are occupied, the resources allocated by the network side to the UE The length of two symbols is automatically extended to transmit data that should be transmitted by resources occupied by other UEs.

The resources initially allocated by the network side to the UE still take the schematic diagram of resource allocation shown in Figure 3c as an example. If some of the resources are occupied by other UEs, the network side can extend the time-frequency resources allocated to the UE by 2 OFDM symbols, that is, The time-frequency resources extended by the network side for the UE are OFDM sequence numbers ranging from (K+14) to (K+15), and the occupied resources in the frequency domain can be f1-f9. The schematic diagram of the extended resource allocation is shown in Figure 3e (Fig. 3e gray section).

Of course, the network side also extends the frequency domain resources allocated for the UE backwards according to the frequency domain information of the initial resources allocated to the UE. The length of the extension is determined by the total resources occupied by other UEs and the frequency allocated by the UE. Domain resource decisions.

The resources initially allocated by the network side to the UE still take the resource allocation diagram shown in Figure 3c as an example. The network side preferentially extends the frequency according to the number of resource blocks to be compensated, and then extends to the next symbol after the entire frequency bandwidth is full. The schematic diagram of resource allocation after extension is shown in Fig. 3f (gray part of Fig. 3f).

In the downlink data transmission method provided by the embodiment of the present invention, if the network side determines that the resources initially allocated for the UE are scheduled to be used by other UEs, the downlink data sent to the UE includes the time-frequency of the user identity occupied by other UEs The identification data of the resource enables the UE to determine which resources are occupied by other UEs according to the identification data. In this way, when the UE performs data detection, it can avoid the resources occupied by other UEs and avoid receiving erroneous data, which may affect the UE data. reliability of reception. In addition, in the downlink data transmission method provided by the embodiment of the present invention, if the resources allocated to a certain UE are occupied by other UEs, the network side can also schedule compensation resources for the terminal to transmit data transmitted by the resources occupied by other UEs. Based on this , the identification data can also be used to indicate the resource information that the UE compensates for. If the TTI of the UE is not fixed, the network side can make corresponding expansions in the time domain, and the resources allocated to the UE are automatically extended in the time domain to avoid Data transmitted by resources occupied by other UEs are transmitted.

Based on the same inventive concept, the embodiments of the present invention also provide a downlink data detection method, a downlink data transmission and detection device, and related equipment and systems. The data transmission methods are similar. Therefore, for the implementation of the above-mentioned methods, apparatuses, related equipment and systems, reference may be made to the implementation of the downlink data transmission method, and the repetition will not be repeated.

As shown in FIG. 4 , which is a schematic flowchart of an implementation of a downlink data detection method provided by an embodiment of the present invention, which may include the following steps:

S41. Receive downlink data transmitted by the network side.

The downlink data transmitted by the network side to the UE includes identification data for identifying the time-frequency resources occupied by other UEs.

S42. According to the received identification data, perform data detection on the time-frequency resource positions initially allocated by the network side, except the time-frequency resource positions occupied by other UEs.

Specifically, the UE may, according to the identification data received in step S41, perform data detection on the resource positions initially allocated by the network side and on the resource positions other than those occupied by other UEs, and do not perform data detection on the resource positions originally allocated to itself, but not occupied by other UEs. The resources occupied by other UEs are detected to avoid receiving erroneous data, thereby ensuring the reliability of UE data reception.

During specific implementation, the identification data received in step S41 may be used to identify the start and end positions of the time-frequency resources occupied by other UEs. In this way, in step S42, the UE may perform data detection by skipping the time-frequency resource positions occupied by other UEs in the time-frequency resource positions initially allocated by the network side according to the starting and ending positions of the time-frequency resources occupied by other UEs.

Preferably, the network side can use the specific symbol sequence or specific symbol feature agreed with the UE to identify the start and end positions of the time-frequency resources occupied by other UEs; or the network side can use the specific symbol sequence or specific symbol feature while using the same. In the downlink data, the downlink data other than the identification data transmits the specific symbol sequence and the specific symbol characteristics with different powers. Preferably, the transmission power of the network side for transmitting the identification data may be higher than other downlink data, so that the UE can determine the initial allocation Among the resources given to itself, the resources occupied by other UEs.

During specific implementation, the identification data may also be used to indicate information that needs to be transmitted for compensation for the UE or data that cannot be reliably detected.

Preferably, the data detection method provided by the embodiment of the present invention may further include the following steps: according to the time-frequency information of resources occupied by other UEs, on extending the corresponding resource positions based on the initial resource positions allocated by the network side, detecting the network The side compensates for information transmitted, occupied by other UEs but not transmitted, or information that cannot be reliably detected. The time-frequency information of the resources occupied by other UEs may be determined according to the positions of the time-frequency resources occupied by other UEs indicated by the identification data.

Wherein, the time-frequency information of resources occupied by other UEs includes time-domain information of resources occupied by other UEs, and based on this, the initial resource position allocated based on the network side may be extended backward according to the time-domain information of resources occupied by other UEs At the resource location of the corresponding time length, the information that is compensated and transmitted by the network side, that is occupied by other UEs but not transmitted, or information that cannot be reliably detected is detected. The time domain information of resources occupied by other UEs may be determined according to the time-frequency resource positions occupied by other UEs indicated by the identification data.

During the specific implementation, according to the frequency domain information of the initial resources allocated for the network side, on the time-frequency resource positions extended based on the initial resource positions allocated by the network side, it is also possible to detect the compensation transmitted by the network side, which is occupied by other UEs. Untransmitted information or information that cannot be reliably detected. The time length of the extended region is determined by the total resources occupied by other UEs and the frequency domain resources allocated by the UEs.

As shown in FIG. 5, it is a schematic structural diagram of a downlink data transmission apparatus provided by an embodiment of the present invention, which may include:

The data generating unit 51 is configured to generate downlink data to be transmitted for the UE.

The transmission unit 52 is configured to transmit downlink data on the time-frequency resources scheduled by the UE.

The transmitted downlink data includes identification data for identifying time-frequency resources allocated to the UE but occupied by other UEs.

Preferably, the identification data may be used to identify the start and end positions of the time-frequency resources occupied by other UEs. The identification data may include a specific symbol sequence or a specific symbol feature agreed with the UE.

More preferably, the network side can transmit the above-mentioned specific symbol sequence or specific symbol characteristics using a power different from that of transmitting other downlink data.

Preferably, during specific implementation, the identification data may also be used to indicate information that needs to be compensated and transmitted for the UE or information that cannot be reliably detected.

Optionally, the downlink data transmission method provided by the embodiment of the present invention may further include:

The resource extension unit is used to extend the time-frequency resources allocated to the UE according to the time-frequency information of the resources occupied by other UEs, so as to compensate for the transmission of information occupied by other UEs but not transmitted or information that cannot be reliably detected .

The time-frequency information of resources occupied by other UEs includes time-domain information of resources occupied by other UEs; and the resource extension unit is specifically configured to allocate time-frequency resources for the UE according to the time-domain information of resources occupied by other UEs Extends back the corresponding length of time.

Alternatively, the resource extension unit is further configured to extend the time-frequency resources allocated to the UE backwards according to the frequency domain information of the resources allocated to the UE, and the extended time length is determined by the total resources occupied by other UEs and the UE The allocated frequency domain resources are determined. .

Optionally, the downlink data transmission device provided by the implementation of the present invention may further include a judgment unit 53, wherein:

A judgment unit 53, configured to judge whether the resources allocated by the UE are occupied by other UEs before the transmission unit 52 transmits downlink data to the UE;

The transmitting unit 52 is specifically configured to transmit the downlink data to the UE if the resources allocated for the UE are occupied by other UEs.

For the convenience of description, the above parts are divided into modules (or units) according to their functions and described respectively. Of course, when implementing the present invention, the functions of each module (or unit) may be implemented in one or more software or hardware. For example, the downlink data transmission apparatus provided in the embodiment of the present invention may be set in a base station.

As shown in FIG. 6, it is a schematic structural diagram of a downlink data detection apparatus provided by an embodiment of the present invention, which may include:

a receiving unit 61, configured to receive downlink data transmitted by the network side, where the downlink data includes identification data for identifying time-frequency resources occupied by other UEs;

The detection unit 62 is configured to perform data detection on time-frequency resource positions other than time-frequency resources occupied by other UEs among the time-frequency resource positions initially allocated by the network side according to the identification data.

The identification data is used to identify the start and end positions of the time-frequency resources occupied by other UEs.

The detection unit 62 is specifically configured to perform data detection by skipping the time-frequency resource positions occupied by other UEs in the time-frequency resource positions initially allocated by the network side according to the starting and ending positions of the time-frequency resources occupied by other UEs .

Preferably, the identification data includes a specific symbol sequence or specific symbol feature agreed with the network side; or the transmission power of the specific symbol sequence or specific symbol feature used by the identification data and other downlink data in the downlink data. transmission power is different.

During specific implementation, the identification data may also be used to indicate information that needs to be transmitted for compensation for the UE or data that cannot be reliably detected.

Preferably, the detection unit 62 is further configured to, according to the time-frequency information of the resources occupied by other UEs, extend the corresponding resource positions based on the initial resource positions allocated by the network side, to detect the compensation transmitted by the network side that is transmitted by other UEs. Information that is occupied by the UE but not transmitted or that cannot be detected reliably.

The time-frequency information of resources occupied by other UEs includes time domain information of resources occupied by other UEs; and

The detection unit 62 is specifically configured to detect, according to the time domain information of the resources occupied by other UEs, on the resource positions that are extended backward by a corresponding time length based on the initial resource positions allocated by the network side, the network side compensated transmissions, which are transmitted by the network side. Information that is occupied by other UEs but not transmitted or that cannot be detected reliably.

The detection unit 62 may also be configured to detect, according to the frequency domain information of the initial resource allocated by the network side, on the time-frequency resource position extended based on the initial resource position allocated by the network side, the compensation transmitted by the network side that is transmitted by other The information occupied by the UE but not transmitted or the information that cannot be reliably detected, wherein the time length of the extension area is determined by the total resources occupied by other UEs and the frequency domain resources allocated by the network side.

For the convenience of description, the above parts are divided into modules (or units) according to their functions and described respectively. Of course, when implementing the present invention, the functions of each module (or unit) may be implemented in one or more software or hardware. For example, the downlink data detection apparatus provided in the embodiment of the present invention may be set in a terminal.

As shown in FIG. 7, it is a schematic structural diagram of a data transmission system provided by an embodiment of the present invention, including a base station 71 and a terminal 72, wherein the base station 71 is provided with the downlink data transmission device shown in FIG. 5, and the terminal 72 is provided with the The downlink data detection device shown in 6.

As will be appreciated by one skilled in the art, embodiments of the present invention may 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 an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

Although the preferred embodiments of the present invention have been described, additional changes and modifications to these embodiments may occur to those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be construed to include the preferred embodiment and all changes and modifications that fall within the scope of the present invention.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims (19)

1. a downlink data transmission method, is characterized in that, comprises: transmitting downlink data on the time-frequency resources scheduled by the user terminal UE, where the downlink data includes identification data for identifying the time-frequency resources allocated for the UE but occupied by other UEs; Wherein, the method also includes: According to the time-frequency information of resources occupied by other UEs, the time-frequency resources allocated to the UE will be extended accordingly to compensate for transmission of information occupied by other UEs but not transmitted or information that cannot be reliably detected; or According to the frequency domain information of the resources allocated to the UE, the time-frequency resources allocated to the UE are extended backward, and the extended time length is determined by the total resources occupied by other UEs and the frequency domain resources allocated by the UE; Wherein, the identification data is used to identify the start and end positions of the time-frequency resources occupied by other UEs; The identification data includes a specific symbol sequence or a specific symbol feature agreed with the UE; The transmission power of the specific symbol sequence or the specific symbol feature is different from the transmission power of other downlink data in the downlink data. 2 . The method according to claim 1 , wherein the identification data is further used to indicate information that needs to be compensated for transmission for the UE or data that cannot be reliably detected. 3 . 3. The method of claim 1, wherein the time-frequency information of resources occupied by other UEs comprises time domain information of resources occupied by other UEs; and According to the time-frequency information of resources occupied by other UEs, the time-frequency resources allocated to the UE will be extended accordingly, including: According to the time domain information of resources occupied by other UEs, the time-frequency resources allocated to the UE are extended backward by a corresponding time length. 4. The method according to claim 1, wherein before transmitting the identification data to the UE, further comprising: determining whether the resources allocated for the UE are occupied by other UEs; and If the resource allocated for the UE is occupied by other UEs, the identification data is sent to the UE. 5. A method for detecting downlink data, comprising: receiving downlink data transmitted by the network side, where the downlink data includes identification data for identifying time-frequency resources occupied by other UEs; According to the identification data, data detection is performed on time-frequency resource positions other than time-frequency resources occupied by other UEs among the time-frequency resource positions initially allocated by the network side; Among them, it also includes: According to the time-frequency information of resources occupied by other UEs, extend the corresponding resource positions based on the initial resource positions allocated by the network side, and detect the information that is compensated and transmitted by the network side, that is occupied by other UEs but not transmitted, or information that cannot be reliably detected. ;or According to the frequency domain information of the initial resource allocated by the network side, on the time-frequency resource position extended based on the initial resource position allocated by the network side, detect the information that the network side compensates and transmits, which is occupied by other UEs but is not transmitted or cannot be reliably transmitted. The detected information, wherein the time length of the extension area is determined by the total resources occupied by other UEs and the frequency domain resources allocated by the UE; Wherein, the identification data includes a specific symbol sequence or specific symbol feature agreed with the network side; or the transmission power of the specific symbol sequence or specific symbol feature used by the identification data and the transmission of other downlink data in the downlink data Power is different. 6. The method of claim 5, wherein the identification data is used to identify the start and end positions of time-frequency resources occupied by other UEs; and According to the identification data, data detection is performed on the time-frequency resource positions initially allocated by the network side, except the time-frequency resource positions occupied by other UEs, specifically including: According to the starting and ending positions of the time-frequency resources occupied by other UEs, data detection is performed by skipping the time-frequency resource positions occupied by other UEs in the time-frequency resource positions initially allocated by the network side. 7. The method of claim 5, wherein the identification data is further used to indicate information that needs to be compensated or data that cannot be reliably detected. 8. The method of claim 5, wherein the time-frequency information of resources occupied by other UEs comprises time domain information of resources occupied by other UEs; and According to the time domain information of the resources occupied by other UEs, extend the corresponding resource positions based on the initial resource positions allocated by the network side, and detect the information that is compensated and transmitted by the network side, that is occupied by other UEs but not transmitted, or information that cannot be reliably detected. , including: According to the time domain information of the resources occupied by other UEs, at the resource positions that are extended backward by a corresponding time length based on the initial resource positions allocated by the network side, the network side compensates and transmits information that is occupied by other UEs but not transmitted, or Information that cannot be reliably detected. 9. A downlink data transmission device, comprising: a transmission unit, configured to transmit downlink data on the time-frequency resources scheduled by the user terminal UE, where the downlink data includes identification data for identifying the time-frequency resources allocated to the UE but occupied by other UEs; The resource extension unit is used to extend the time-frequency resources allocated to the UE according to the time-frequency information of the resources occupied by other UEs, so as to compensate for the transmission of information occupied by other UEs but not transmitted or information that cannot be reliably detected ;or According to the frequency domain information of the resources allocated to the UE, the time-frequency resources allocated to the UE are extended backward, and the extended time length is determined by the total resources occupied by other UEs and the frequency domain resources allocated by the UE; Wherein, the identification data is used to identify the start and end positions of the time-frequency resources occupied by other UEs; The identification data includes a specific symbol sequence or a specific symbol feature agreed with the UE; The transmission power of the specific symbol sequence or the specific symbol feature is different from the transmission power of other downlink data in the downlink data. 10 . The apparatus according to claim 9 , wherein the identification data is further used to indicate information that needs compensation for the UE or information that cannot be reliably detected. 11 . 11. The apparatus of claim 9, wherein the time-frequency information of resources occupied by other UEs comprises time domain information of resources occupied by other UEs; and The resource extending unit is specifically configured to extend the time-frequency resource allocated for the UE backward by a corresponding time length according to time domain information of resources occupied by other UEs. 12. The apparatus of claim 9, further comprising a judgment unit, wherein: The judgment unit is further configured to judge whether the resource allocated by the UE is occupied by other UEs before the transmission unit transmits the identification data to the UE; The transmission unit is specifically configured to send the identification data to the UE if the resources allocated for the UE are occupied by other UEs. 13. A base station, characterized by comprising the device according to any one of claims 9 to 12. 14. A device for detecting downlink data, comprising: a receiving unit, configured to receive downlink data transmitted by the network side, where the downlink data includes identification data for identifying time-frequency resources occupied by other UEs; a detection unit, configured to perform data detection on time-frequency resource positions other than time-frequency resources occupied by other UEs in the time-frequency resource positions initially allocated by the network side according to the identification data; Wherein, the detection unit is further configured to, according to the time-frequency information of the resources occupied by other UEs, extend the corresponding resource positions based on the initial resource positions allocated by the network side, and detect the compensation transmissions transmitted by the network side that are occupied by other UEs. information that is not transmitted or cannot be reliably detected; or According to the frequency domain information of the initial resource allocated by the network side, on the time-frequency resource position extended based on the initial resource position allocated by the network side, detect the information that the network side compensates and transmits, which is occupied by other UEs but is not transmitted or cannot be reliably transmitted. The detected information, wherein the time length of the extension area is determined by the total resources occupied by other UEs and the frequency domain resources allocated by the network side; Wherein, the identification data includes a specific symbol sequence or a specific symbol feature agreed with the network side; or the identification data includes a specific symbol sequence or a specific symbol feature agreed with the network side and the specific symbol sequence or all The transmission power of the specific symbol feature is different from the transmission power of other downlink data in the downlink data. 15. The apparatus of claim 14, wherein the identification data is used to identify the start and end positions of time-frequency resources occupied by other UEs; and The detection unit is specifically configured to perform data detection by skipping the time-frequency resource positions occupied by other UEs in the time-frequency resource positions initially allocated by the network side according to the starting and ending positions of the time-frequency resources occupied by other UEs. 16. The apparatus of claim 14, wherein the identification data is further used to indicate information that needs to be compensated or information that cannot be reliably detected. 17. The apparatus of claim 14, wherein the time-frequency information of resources occupied by other UEs comprises time-domain information of resources occupied by other UEs; and The detection unit is specifically configured to detect, according to the time domain information of the resources occupied by other UEs, on the resource positions that are based on the initial resource positions allocated by the network side and extend back by a corresponding time length, to detect the compensation transmitted by the network side that is transmitted by other UEs. Information that is occupied by the UE but not transmitted or that cannot be detected reliably. 18. A terminal, characterized by comprising the device according to any one of claims 14 to 17. 19. A downlink data transmission system, comprising the base station of claim 13 and the terminal of claim 18.

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