TWI720286B - Data transmission control method, network side equipment and terminal side equipment - Google Patents

Abstract

Embodiments of the present invention provide a data transmission control method, a network side device, and a terminal side device. The method includes: the network side device maps a codeword to at least one data layer; the network side device maps the data layer to at least one standard On the co-location (QCL) grouping, the QCL grouping is: antenna port grouping established according to the QCL relationship between the antenna ports; the network side device performs data transmission based on the QCL grouping. The embodiment of the present invention realizes data transmission of multi-array antennas.

Description

Data transmission control method, network side equipment and terminal side equipment

The embodiment of the present invention belongs to the field of communications, and particularly relates to a data transmission control method, network side equipment and terminal side equipment.

In the current LTE system, during data transmission, the high-level transmission block is first mapped to up to two codewords, and then the codewords are mapped to layers through the layer mapping module, and then the signal is mapped to the antenna port through the layer-to-port mapping . The existing data transmission mechanism can support the transmission of up to two codewords and 8 data flows, but this method is only suitable for single-array MIMO (Multiple-Input Multiple-Output) transmission. However, in a large-scale antenna system, multiple independent AAS (Adaptive Antenna System, self-adjusting antenna system) sub-array modules are likely to be used. The clock synchronization may be different, and the positions may be far apart and cannot be directly extended. Use existing transmission mechanisms.

The embodiments of the present invention provide a data transmission control method, network side equipment, and terminal side equipment to solve the transmission problem of multi-array antennas.

In order to achieve the above-mentioned object of the invention, in the first aspect, an embodiment of the invention provides a data transmission control method, including: The network-side device maps the codeword to at least one data layer; the network-side device maps the data layer to at least one quasi-co-location QCL group, and the QCL group is: an antenna established according to the QCL relationship between the antenna ports Port grouping; and the network side device performs data transmission based on the QCL grouping.

Optionally, before the step for the network side device to map the codeword to at least one data layer, the method further includes: the network side device receives the uplink reference signal sent by the terminal side device; the network side device according to the uplink reference signal Perform uplink reference signal measurement; the network side device determines the QCL relationship of each antenna port according to the measurement result; and the network side device groups the antenna ports according to the QCL relationship to obtain at least one QCL group.

Optionally, before the step of mapping the codeword to at least one data layer by the network side device, the method further includes: the network side device sends a downlink reference signal to the terminal side device, and the downlink reference signal is used for: the terminal side device Perform downlink reference signal measurement, determine the QCL relationship of each antenna port of the network side device according to the measurement result; and the network side device receiving terminal side device QCL grouping the antenna port according to the QCL relationship and then report the grouping method.

Optionally, in the state of non-spatial multiplexing, when the data transmission is multi-layer diversity transmission, the step of mapping the data layer to at least one quasi-co-location QCL packet by the network-side device includes: when a correlation method is used When transmitting data, the network side device maps all the data layers to In a QCL group; when the data is transmitted in a non-correlated way, the network side device maps the data layers corresponding to different data layer subsets to different QCL groups, and the data layers corresponding to the same data layer subset are mapped to One or more QCL groups.

Optionally, in the state of closed-loop spatial multiplexing, the step of mapping the data layer to at least one quasi-co-location QCL packet by the network-side device includes: when data is transmitted in a related manner, the network-side device transfers all The data layer is mapped to a QCL group; when the data is transmitted in a non-correlated way, the network side device maps the data layers corresponding to different data layer subsets to different QCL groups, and the same data layer subset The corresponding data layer is mapped to the same QCL packet.

Optionally, in the state of open-loop spatial multiplexing, the step of mapping the data layer to at least one quasi-co-location QCL packet by the network-side device includes: when the data is transmitted in a related manner, the network-side device will All the data layers are mapped to one QCL packet; when the data is transmitted in a non-correlated manner, the network side device maps all the data layers to at least two QCL packets.

Optionally, the step of mapping the data layer to at least one quasi-co-location QCL packet by the network-side device further includes: when the data is transmitted in a non-correlated manner, the network-side device divides the different subsets of the same data layer The data layer is mapped to different QCL packets.

Optionally, the network side device maps the data layer to at least one quasi-co-location Before the steps on the QCL packet, the method further includes: the network side device pre-configures the limit value of the number of codewords on each QCL packet.

Optionally, the data transmission includes service data transmission or channel status information (CSI) transmission.

Optionally, the method further includes: when the network side device is performing service data transmission, based on the QCL packet, respectively transmitting corresponding control information in each QCL packet, and the control information is used to instruct demodulation during service data transmission Reference signal DMRS port allocation, S channel number SCID and resource allocation situation.

Optionally, in the state of spatial multiplexing, when the data layer mapped by each codeword is mapped to a QCL packet, the method further includes: when the network side device is performing service data transmission, in each QCL packet The modulation and coding strategy MCS, the new data indicator NDI and the redundancy version RV of the codeword are respectively notified within.

Optionally, when performing CSI transmission, the network-side device performs data transmission based on the QCL packet. The steps include: the network-side device sends measurement configuration information to the terminal-side device according to the QCL packet, and the measurement configuration information uses Where: the terminal side device performs CSI measurement on each antenna port in the QCL group; the network side device uses the QCL group as a unit to send a CSI indicator signal on the resource corresponding to the antenna port of each QCL group; and the network side The device receives the measurement result reported by the terminal-side device for measuring the CSI indicator signal based on the measurement configuration information.

In the second aspect, the embodiment of the present invention also provides a data transmission control The method includes: the terminal-side device and the network-side device perform uplink reference signal measurement or downlink reference signal measurement interaction to perform quasi co-location (QCL) grouping of each antenna port of the network side device, and the QCL grouping is: according to each antenna port The antenna port grouping established by the QCL relationship; and the terminal-side device performs data transmission based on the QCL grouping.

Optionally, when the terminal-side device and the network-side device perform downlink reference signal measurement interactions, before the terminal-side device performs data transmission based on the QCL packet, the method further includes: the terminal-side device determines according to the measurement result The QCL relationship of each antenna port of the network side device; the terminal side device groups the antenna ports according to the QCL relationship to obtain at least one QCL group; and the terminal side device reports the grouping mode corresponding to the at least one QCL group.

Optionally, the data transmission includes service data transmission or channel status information (CSI) transmission.

Optionally, when performing CSI transmission, the method further includes: the terminal side device receives measurement configuration information sent by the network side device; the terminal side device performs CSI on each antenna port in the QCL group according to the measurement configuration information Measurement; the terminal-side device calculates the CSI of the channel to be measured in the measurement configuration information based on a related transmission method or an unrelated transmission method; and the terminal-side device reports the calculated CSI to the network-side device.

Optionally, when the terminal-side device calculates the CSI of the channel to be measured in the measurement configuration information based on the relevant transmission method, the step of the terminal-side device reporting the calculated CSI to the network-side device includes: The device reports the CSI corresponding to one or more QCL packets; when the terminal-side device calculates the CSI of the channel to be measured in the measurement configuration information based on the unrelated transmission method, the terminal-side device reports the calculated CSI to the network-side device The CSI step includes: reporting the CSI corresponding to one or more QCL packet combinations to the network side device.

In the third aspect, an embodiment of the present invention also provides a network-side device, including: a codeword mapping module for mapping the codeword to at least one data layer; and a packet mapping module for the data The layer is mapped to at least one quasi-co-location QCL group, and the QCL group is: an antenna port group established according to the QCL relationship between the antenna ports; and a first transmission module for the network side device to perform based on the QCL group Data transmission.

Optionally, the network side device further includes: a first receiving module, configured to receive an uplink reference signal sent by a terminal side device; a first measurement module, configured to perform uplink reference signal measurement based on the uplink reference signal; first The determining module is configured to determine the QCL relationship of each antenna port according to the measurement result; and the first grouping module is configured to group the antenna ports according to the QCL relationship to obtain at least one QCL group.

Optionally, the network side device further includes: a sending module, which is used to send a downlink reference signal to the terminal side device, and the downlink reference signal is used for Where: the terminal side device performs downlink reference signal measurement, and determines the QCL relationship of each antenna port of the network side device according to the measurement result; and the second receiving module is used for receiving the terminal side device to QCL group the antenna ports according to the QCL relationship Subsequent reporting is the grouping method.

Optionally, in the state of non-spatial multiplexing, when the data transmission is multi-layer diversity transmission, the packet mapping module is specifically used to: when the data is transmitted in a related manner, the network side device transfers all the data layers Map to a QCL group; when the data is transmitted in a non-correlated way, the network side device maps the data layers corresponding to different data layer subsets to different QCL groups, and the data layer corresponding to the same data layer subset Map to one or more QCL packets.

Optionally, in the state of closed-loop spatial multiplexing, the packet mapping module is specifically used to: when transmitting data in a related manner, the network side device maps all the data layers into a QCL packet; When transmitting data in a related manner, the network side device maps data layers corresponding to different data layer subsets to different QCL groups, and the data layers corresponding to the same data layer subset are mapped to the same QCL group.

Optionally, in the state of open-loop spatial multiplexing, the packet mapping module is specifically used to: when data is transmitted in a related manner, the network side device maps all the data layers into a QCL packet; When the data is transmitted in a non-correlated manner, the network side device maps all the data layers to at least two QCL packets.

Optionally, in the state of open-loop spatial multiplexing, the packet mapping module is also used to: when data is transmitted in a non-correlated manner, the network side device maps different data layers in the same data layer subset to different On the QCL group.

Optionally, the network side device further includes: a code word limitation module, which is used to pre-configure a limit value for the number of code words on each QCL packet.

Optionally, the data transmission includes service data transmission or channel status information (CSI) transmission.

Optionally, the first transmission module is also used to transmit corresponding control information in each QCL packet based on the QCL packet during service data transmission, and the control information is used to indicate the solution during service data transmission. Tuning reference signal DMRS port allocation, S-channel number SCID and resource configuration.

Optionally, in the state of spatial multiplexing, when the data layer mapped by each codeword is mapped to a QCL packet, the first transmission module is also used to: during service data transmission, in each QCL The modulation and coding strategy MCS, the new data indicator NDI and the redundancy version RV of the codeword are notified separately in the packet.

Optionally, when performing CSI transmission, the first transmission module includes: a first sending unit, configured to send measurement configuration information to the terminal-side device according to the QCL packet, and the measurement configuration information is used for: the terminal-side device Perform CSI measurement on each antenna port in the QCL group; The second sending unit is configured to use the QCL group as a unit to send a CSI indicator signal on the resource corresponding to the antenna port of each QCL group; and the receiving unit is configured to receive the CSI from the terminal side device based on the measurement configuration information Indicates the measurement result reported by the signal for measurement.

In the fourth aspect, an embodiment of the present invention also provides a terminal-side device, including: a reference signal interaction module, which is used to perform uplink reference signal measurement or downlink reference signal measurement interaction with the network-side device to communicate with the network-side device The antenna ports of the antenna ports are grouped in quasi-co-location (QCL), and the QCL grouping is: antenna port grouping established according to the QCL relationship between the antenna ports; and a second transmission module for data transmission based on the QCL grouping .

Optionally, when the reference signal interaction module performs downlink reference signal measurement interaction with the network side device, the terminal side device further includes: a second determination module for determining each antenna port of the network side device according to the measurement result The second grouping module is used to group the antenna ports according to the QCL relationship to obtain at least one QCL group; and the first reporting module is used to report the grouping mode corresponding to the at least one QCL group .

Optionally, the data transmission includes service data transmission or channel status information (CSI) transmission.

Optionally, when performing CSI transmission, the terminal-side device further includes: a third receiving module for receiving measurement configuration information sent by the network-side device; and a second measurement module for matching the measurement configuration information according to the measurement configuration information. Each antenna port in the QCL group Perform CSI measurement; a calculation module, used to calculate the CSI of the channel to be measured in the measurement configuration information based on related transmission methods or non-related transmission methods; and a second reporting module, used to report calculations to the network side device CSI obtained.

Optionally, when the calculation module calculates the CSI of the channel to be measured in the measurement configuration information based on the related transmission method, the second reporting module is specifically configured to: report one or more QCLs to the network side device The CSI corresponding to the grouping; when the calculation module calculates the CSI of the channel to be measured in the measurement configuration information based on the unrelated transmission method, the second reporting module is specifically used to: report one or more to the network side device CSI corresponding to the QCL grouping combination.

In the fifth aspect, a network side device is also provided, including: a processor, a memory, and a computer program stored on the memory and running on the processor. When the computer program is executed by the processor, The steps in the data transmission control method as described in the first aspect are implemented.

In the sixth aspect, there is also provided a terminal-side device, including: a processor, a memory, and a computer program stored on the memory and capable of running on the processor. When the computer program is executed by the processor, The steps in the data transmission control method described in the second aspect are implemented.

In a seventh aspect, there is also provided a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the data transmission control as described in the first aspect is realized Steps in the method.

In the eighth aspect, a computer-readable storage medium is also provided, and the computer A computer program is stored on the readable storage medium, and when the computer program is executed by the processor, the steps in the data transmission control method as described in the second aspect are realized.

In the embodiment of the present invention, the network-side device maps the codeword to at least one data layer; the network-side device maps the data layer to at least one quasi-co-location QCL group, and the QCL grouping is as follows: The antenna port grouping established by the QCL relationship; the network side device performs data transmission based on the QCL grouping. Thus, the data transmission of the multi-array antenna can be better realized.

201~209, 501~502, 601~605: steps

11: Network side equipment

12: Terminal side equipment

701: codeword mapping module

702: Group Mapping Module

703: The first transmission module

801: Reference signal interaction module

802: The second transmission module

900, 1000: processor

910, 1010: Transceiver

920, 1020: Memory

930, 1030: User interface

In order to more clearly explain the text embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings needed in the description of the embodiments. Obviously, the drawings in the following description are only text of the present invention. For some of the embodiments of, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without making progressive labor.

Fig. 1 is a schematic diagram of a network structure applied in an embodiment of the present invention; Fig. 2 is a schematic flowchart of a data transmission control method provided by an embodiment of the present invention; Fig. 3 is a schematic flowchart of another data transmission control method provided by an embodiment of the present invention Figure 4 is a schematic flow diagram of another data transmission control method provided by an embodiment of the present invention; Figure 5 is a schematic flow diagram of another data transmission control method provided by an embodiment of the present invention; Figure 6 is another flow diagram provided by an embodiment of the present invention A schematic flow chart of a data transmission control method; FIG. 7 is a schematic structural diagram of a network-side device provided by an embodiment of the present invention; FIG. 8 is a schematic structural diagram of a terminal-side device provided by an embodiment of the present invention; FIG. 9 is a schematic structural diagram of another network-side device provided by an embodiment of the present invention; and FIG. 10 is a schematic structural diagram of another terminal-side device provided by an embodiment of the present invention.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making progressive labor fall within the protection scope of the present invention.

Referring to Fig. 1, Fig. 1 is a schematic diagram of a network structure applied by an embodiment of the present invention. As shown in FIG. 1, it includes a network side device 11 and a terminal side device 12. The network side device 11 may be an evolved base station (eNB, evolved Node B) or other base station. It should be noted that the specific type of the network side device 11 is not limited in the embodiment of the present invention. The network side device 11 can establish communication with the terminal side device 12. The network in the figure may indicate that the network side device 11 can establish communication with the terminal side device 12 wirelessly. The terminal side device 12 can be a mobile phone or a tablet (Tablet Personal Computer), laptop computer (Laptop Computer), personal digital assistant (PDA), mobile Internet device (Mobile Internet Device, MID) or wearable device (Wearable Device) and other terminal side devices. It should be noted that the specific type of the terminal side device 12 is not limited in the embodiment of the present invention.

Based on the network structure shown in FIG. 1, an embodiment of the present invention provides a data transmission control method. As shown in FIG. 2, the method includes the following steps: Step 201: The network side device maps codewords to at least one data layer; Step 202: The network side device maps the data layer to at least one quasi co-location QCL (quasi co-location) group, the QCL group is: antenna port group established according to the QCL relationship between the antenna ports; step 203 , The network side device performs data transmission based on the QCL packet.

The following Table 1 schematically shows how to map codewords to at least one data layer in step 201, that is, codeword-to-layer mapping for spatial multiplexing (Codeword-to-layer mapping for spatial multiplexing). Among them, x is the layer and d is the codeword.

The mapping from the layer to the QCL group in step 202 is exemplarily described below. In fact, the layer is mapped to the corresponding antenna port (or reference signal port) in the QCL group.

For example, the process of mapping v layers to v antenna ports can be expressed as:

The above-mentioned codeword may be one or multiple. Each codeword can be mapped to one data layer or multiple data layers. The specific mapping method can be set according to the needs of data transmission, and there is no further limitation here. For example, a single-layer transmission scheme can be used, and a codeword is mapped to a data layer, forming a 1-to-1 mapping relationship. When the transmit diversity scheme is adopted, one codeword can be mapped to two or more data layers. For example, using In frequency domain diversity SFBC, one codeword can be mapped to two data layers. When frequency domain diversity SFBC+ frequency switching transmission diversity FSTD is adopted, one codeword is mapped to four data layers.

The above-mentioned mapping relationship between the data layer and the QCL packet can be set according to actual needs, for example, the mapping relationship corresponding to different transmission modes is different. For example, the same data layer can be mapped to one QCL group, or the same data layer can be mapped to at least two QCL groups, and the number of data layers contained in the QCL group or the number of codewords corresponding to the data layer can also be performed. limit. This is explained in detail below: Case 1: In the state of non-spatial multiplexing, when the data transmission is single-layer transmission, the above step 202 includes: the network side device maps the data layer to one or more QCL grouping.

In the first case, the data of the data layer can be transmitted through one or more QCL packets, which can be specifically set according to actual needs, which is not further limited here.

The second case: in the state of non-spatial multiplexing, when the data transmission is multi-layer diversity transmission, the above step 202 includes: when the data is transmitted in a related manner, the network side device maps all the data layers to In a QCL group; when the data is transmitted in a non-correlated way, the network side device maps the data layers corresponding to different data layer subsets to different QCL groups, and the data layers corresponding to the same data layer subset are mapped to One or more QCL groups.

In the second case, when the data is transmitted in a non-correlated way, the network side device will configure QCL groupings for all data layer subsets, and map different data layer subsets to different In the QCL grouping, the same data layer subset can be mapped to one QCL group or multiple QCL groups, which can be set according to actual needs. For example, the data layer subset A includes: an array layer A1 and a data layer A2. Data layer subset B includes: data layer B1 and data layer B2. The QCL group includes QCL group 1, QCL group 2, QCL group 3, and QCL group 4. At this time, data layer A1 and data layer A2 in data layer subset A can be simultaneously mapped to QCL group 1, array layer B1 can be mapped to QCL group 2, and data layer B2 can be mapped to QCL group 3. It should be understood that in this embodiment, the same data layer can also be mapped to multiple QCL groups, for example, the data layer B2 can be mapped to QCL group 3 and QCL group 4.

The third case: in the state of closed-loop spatial multiplexing, the above step 202 includes: when the data is transmitted in a related manner, the network side device maps all the data layers into a QCL packet; when the non-correlated method is used When transmitting data, the network side device maps data layers corresponding to different data layer subsets to different QCL groups, and the data layers corresponding to the same data layer subset are mapped to the same QCL group.

In the third case, when the data is transmitted in a non-correlated way, the network side device will configure QCL groups for all data layer subsets, and map different data layer subsets to different QCL groups. For the same data layer The data layer corresponding to the subset is mapped to the same QCL group, which can be set according to actual needs. For example, the data layer mapped by the first codeword includes an array layer A1, a data layer A2, and a data layer A3. The data layer mapped by the second codeword includes B including: a data layer B1, a data layer B2, and a data layer B3. Among them, the array layer A1 and the data layer A2 constitute the first data layer subset, the data layer A3 constitutes the second data layer subset, and the data layer B1 and the data layer B2 constitute The third data layer subset, and the data layer B3 constitutes the third data layer subset. The QCL group includes QCL group 1, QCL group 2, QCL group 3, and QCL group 4. At this time, data layer A1 and data layer A2 in data layer subset A can be simultaneously mapped to QCL group 1, data layer A3 can be mapped to QCL group 2, and array layer B1 and data layer B2 can be mapped to QCL group 3. , The data layer B3 is mapped to QCL group 4.

The fourth case: in the state of open-loop spatial multiplexing, the above step 202 includes: when the data is transmitted in a related manner, the network side device maps all the data layers into a QCL packet; when the non-correlated data is used When transmitting data in a way, the network side device maps all the data layers to at least two QCL packets.

Among them, in the fourth case, different data layers in the same data layer subset can be mapped to different QCL groups, or can be mapped to the same QCL group, and the specific setting method can be set according to actual needs. For example, in the fourth case, the above step 202 further includes: the network side device maps different data layers in the same data layer subset to different QCL packets.

Regarding the above-mentioned third and fourth cases, the number of restricted codewords can be set in each QCL group, and the mapping relationship of the QCL group is laid out according to the restricted number of codewords. Specifically, before step 202, the method may further include: the network side device pre-configures a limit value of the number of codewords on each QCL packet.

It should be noted that when the above-mentioned network-side device maps all the data layers into a QCL packet, transmission switching can be performed in different transmission time slots. For example can The QCL packet switching is performed in different transmission time slots, and it is also possible to perform switching on different antenna resources of the same QCL packet in different transmission time slots. For example, it can be as follows: QCL packet 1 is used for output transmission in the first transmission time slot, and QCL packet 2 is used for data transmission in the second transmission time slot. It can also be as follows: in the first transmission time slot, the antenna ports 1 to 5 in the QCL packet are used for data transmission, and in the second transmission time slot, the antenna ports 6 to 10 in the QCL packet are used for data transmission. It should be understood that the way of output transmission switching can be set according to actual needs, which is not further limited here.

Specifically, for the signals transmitted on the antenna ports of the same QCL group, the parameter values corresponding to the large-scale parameters of the channel experienced are within the same preset range. Among them, the large-scale parameters include at least one of average gain, average delay, delay spread, average angle of arrival, and angle of arrival spread.

In this embodiment, the large-scale parameters of the channels experienced by the signals sent from each antenna port having a QCL relationship can be considered to be basically the same. In other words, from the perspective of these large-scale channel parameters, these antenna ports can be considered "same location". Therefore, the antenna ports with the same positions are assumed to have their QCLs, so that the antenna ports with the same positions are in the same QCL group. In addition, for antenna ports of different QCL groups, their QCL will not be assumed.

Optionally, the QCL grouping method can be set according to actual needs. For example, the terminal side device can perform QCL grouping on the antenna port of the base station, or the base station can perform QCL grouping on its own antenna port. Detailed description: referring to FIG. 3, in one embodiment, before the above step 201, the method further includes: step 204, the network side device receives the uplink reference signal sent by the terminal side device; Step 205: The network-side device performs uplink reference signal measurement according to the uplink reference signal; Step 206: The network-side device determines the QCL relationship of each antenna port according to the measurement result; Step 207, the network-side device performs the measurement based on the QCL relationship The antenna ports are grouped to obtain at least one QCL group.

In this embodiment, when the network side device is measuring the uplink reference signal of the terminal side device, the measurement result can be used for QCL grouping. For example, the terminal-side device transmits the uplink reference signal, and the network-side device can perform measurement configuration after receiving the uplink reference signal to measure the beam training of the terminal-side device. According to the measurement result, the network-side device can determine the relationship between its own antenna ports, thereby grouping the antenna ports to form at least one QCL group. The above-mentioned uplink reference signal can be actively sent by the terminal-side device to the network-side device, and the network-side device can perform measurement. The network side device can also send corresponding control signaling to the terminal side device, which triggers the terminal side device to send an uplink reference signal to the network side device, and the network side device performs measurement.

Optionally, referring to FIG. 4, in another embodiment, before the above step 201, the method further includes: step 208, the network side device sends a downlink reference signal to the terminal side device, and the downlink reference signal is used for: the terminal side The device performs downlink reference signal measurement, and determines the QCL relationship of each antenna port of the network side device according to the measurement result; step 209, the network side device receives the terminal side device according to the QCL relationship to QCL group the antenna port and then reports the grouping the way.

In this embodiment, the terminal-side device can measure the downlink reference signal, and based on the measurement result, the QCL relationship is assumed for the antenna port of the network-side device, thereby performing QCL grouping. For example, in each QCL group, the QCL between each antenna port can be assumed. For different The antenna end of the QCL packet does not assume its QCL. Finally, the QCL grouping method is reported to the network side device, and the network side device establishes the grouping relationship of each antenna port.

Optionally, the aforementioned data transmission includes service data transmission or CSI (Channel State Information) transmission.

Optionally, when the network side device transmits service data, it transmits corresponding control information in each QCL packet based on the QCL packet, and the control information is used to indicate the demodulation reference signal DMRS port allocation during service data transmission , S-channel number SCID and resource configuration.

Specifically, in the state of spatial multiplexing, when the data layer mapped by each codeword is mapped to a QCL packet, the method further includes: when the network side device is performing service data transmission, in each QCL packet The modulation and coding strategy MCS, the new data indicator NDI and the redundancy version RV of the codeword are notified respectively. It should be understood that, in other embodiments, the information notified in each QCL group may also include other data information, which will not be listed here.

Optionally, when performing CSI transmission, the above step 203 includes: measurement configuration information sent by the network side device to the terminal side device according to the QCL packet, and the measurement configuration information is used for: the terminal side device in the QCL packet Each antenna port performs CSI measurement; the network side device uses the QCL group as a unit to send a CSI indicator signal on the resource corresponding to the antenna port of each QCL group; and the network side device receives the terminal side device based on the measurement configuration information The measurement result reported by measuring the CSI indicator signal.

In this embodiment, the difference between the related transmission mode and the unrelated transmission mode, the CSI indicator signal sent corresponding to each QCL packet is also different. For example, in a related transmission mode, each QCL packet can be configured to send a different CSI indicator signal. In the non-correlated transmission mode, a combination of at least one QCL packet may be used to transmit the CSI at least signal. For example, each QCL packet combination can be configured to send a different CSI indicator signal.

The terminal-side device can perform CSI measurement based on the measurement configuration information sent by the network-side device, and then report the measurement result to the network-side device. Due to the different transmission methods, the corresponding calculation and measurement results are reported in different ways: for example, when the terminal When the side device calculates the CSI of the channel to be measured in the measurement configuration information based on the related transmission method, it may report the CSI corresponding to one or more QCL packets to the network side device. When the terminal-side device calculates the CSI of the channel to be measured in the measurement configuration information based on the unrelated transmission method, it may report the CSI corresponding to one or more QCL packet combinations to the network-side device.

In this embodiment, the aforementioned CSI includes channel quality information and recommended transmission parameters. The recommended transmission parameters may include: PMI (Precoding Matrix Indicator) and RI (rank indication).

In the embodiment of the present invention, the network-side device maps the codeword to at least one data layer; the network-side device maps the data layer to at least one quasi-co-location QCL group, and the QCL grouping is as follows: The antenna port grouping established by the QCL relationship; the network side device performs data transmission based on the QCL grouping. Thus, the data transmission of the multi-array antenna can be better realized.

Based on the network structure shown in FIG. 1, the embodiment of the present invention provides another data transmission The transmission control method, as shown in Figure 5, includes the following steps: Step 501, the terminal side device and the network side device perform uplink reference signal measurement or downlink reference signal measurement interaction to perform a quasi-co-location of each antenna port of the network side device ( QCL) grouping, the QCL grouping is: antenna port grouping established according to the QCL relationship between the antenna ports; step 502, the terminal side device performs data transmission based on the QCL grouping.

In this embodiment, during data transmission, the network side device will map the codeword to at least one data layer, and then map the data layer to at least one QCL packet. The network side device performs data based on the QCL packet. transmission.

Specifically, for the signals transmitted on the antenna ports of the same QCL group, the parameter values corresponding to the large-scale parameters of the channel experienced are within the same preset range. Among them, the large-scale parameters include at least one of average gain, average delay, delay spread, average angle of arrival, and angle of arrival spread.

In this embodiment, the large-scale parameters of the channels experienced by the signals sent from each antenna port having a QCL relationship can be considered to be basically the same. In other words, from the perspective of these large-scale channel parameters, these antenna ports can be considered "same location". Therefore, the antenna ports with the same positions are assumed to have their QCLs, so that the antenna ports with the same positions are in the same QCL group. In addition, for antenna ports of different QCL groups, their QCL will not be assumed.

Optionally, the QCL grouping method can be set according to actual needs. For example, the terminal side device can perform QCL grouping on the antenna port of the base station, or the base station can perform QCL grouping on its own antenna port. Detailed description: referring to FIG. 6, in an embodiment, the above-mentioned data transmission control method includes: step 601, the terminal-side device and the network-side device perform downlink reference signal measurement interaction; Step 602: The terminal-side device determines the QCL relationship of each antenna port of the network-side device according to the measurement result; Step 603: The terminal-side device groups the antenna ports according to the QCL relationship to obtain at least one QCL group; Step 604, The terminal-side device reports the grouping mode corresponding to the at least one QCL packet; step 605, the terminal-side device performs data transmission based on the QCL packet.

In this embodiment, the terminal-side device can measure the downlink reference signal, and based on the measurement result, the QCL relationship is assumed for the antenna port of the network-side device, thereby performing QCL grouping. For example, in each QCL group, the QCL between the antenna ports can be assumed. In addition, for the antenna ends of different QCL groups, the QCL is not assumed. Finally, the QCL grouping method is reported to the network side device, and the network side device establishes the grouping relationship of each antenna port.

Optionally, the aforementioned data transmission includes service data transmission or channel status information (CSI) transmission.

Optionally, when performing CSI transmission, the method further includes: the terminal side device receives measurement configuration information sent by the network side device; the terminal side device performs CSI on each antenna port in the QCL group according to the measurement configuration information Measurement; the terminal-side device calculates the CSI of the channel to be measured in the measurement configuration information based on a related transmission method or an unrelated transmission method; and the terminal-side device reports the calculated CSI to the network-side device.

In this embodiment, the difference between the related transmission mode and the unrelated transmission mode, the CSI indicator signal sent corresponding to each QCL packet is also different. For example, in related transmission methods, you can Configure each QCL group to send a different CSI indicator signal. In the non-correlated transmission mode, a combination of at least one QCL packet may be used to transmit the CSI at least signal. For example, each QCL packet combination can be configured to send a different CSI indicator signal.

The terminal-side device can perform CSI measurement according to the measurement configuration information sent by the network-side device, and then report the measurement result to the network-side device. Due to the different transmission methods, the corresponding calculation and measurement results are reported in different ways: for example, when the When the terminal-side device calculates the CSI of the channel to be measured in the measurement configuration information based on the related transmission method, the step of the terminal-side device reporting the calculated CSI to the network-side device includes: reporting one or more to the network-side device CSI corresponding to a QCL group; when the terminal-side device calculates the CSI of the channel to be measured in the measurement configuration information based on the unrelated transmission method, the step of the terminal-side device reporting the calculated CSI to the network-side device includes: The network side device reports the CSI corresponding to one or more QCL packet combinations.

In this embodiment, the aforementioned CSI includes channel quality information and recommended transmission parameters. The recommended transmission parameters may include: PMI (Precoding Matrix Indicator) and RI (rank indication).

In the embodiment of the present invention, the terminal-side device and the network-side device perform uplink reference signal measurement or downlink reference signal measurement interaction to perform quasi-co-location (QCL) grouping of each antenna port of the network-side device, and the QCL grouping is: The antenna port grouping is established by the QCL relationship between the antenna ports. Step 502: The terminal-side device performs data transmission based on the QCL packet. Thus, the data transmission of the multi-array antenna can be better realized.

Referring to FIG. 7, the figure shows a structure of a network side device, and the network side device includes: The codeword mapping module 701 is used for mapping codewords to at least one data layer; the grouping mapping module 702 is used for mapping the data layer to at least one quasi-co-location QCL group, and the QCL grouping is: The antenna port grouping established by the QCL relationship between the antenna ports; and the first transmission module 703 for the network side device to perform data transmission based on the QCL grouping.

Optionally, the network side device further includes: a first receiving module, configured to receive an uplink reference signal sent by a terminal side device; a first measurement module, configured to perform uplink reference signal measurement based on the uplink reference signal; first The determining module is configured to determine the QCL relationship of each antenna port according to the measurement result; and the first grouping module is configured to group the antenna ports according to the QCL relationship to obtain at least one QCL group.

Optionally, the network side equipment further includes: a sending module, which is used to send a downlink reference signal to the terminal side equipment. The downlink reference signal is used for the terminal side equipment to perform downlink reference signal measurement, and to determine the network side equipment according to the measurement result. The QCL relationship of each antenna port; and the second receiving module for receiving a grouping manner in which the terminal side device QCL grouped the antenna port according to the QCL relationship and then reported.

Optionally, in the state of non-spatial multiplexing, when the data transmission is a single-layer transmission, the packet mapping module 702 is specifically used for: the network side device maps the data layer to one or more QCL packets .

Optionally, in the state of non-spatial multiplexing, when the data transmission is multi-layer diversity During transmission, the packet mapping module 702 is specifically used to: when the data is transmitted in a related manner, the network side device maps all the data layers to a QCL packet; when the data is transmitted in a non-correlated manner, the network side The device maps data layers corresponding to different data layer subsets to different QCL groups, and maps data layers corresponding to the same data layer subset to one or more QCL groups.

Optionally, in the state of closed-loop spatial multiplexing, the packet mapping module 702 is specifically used to: when transmitting data in a related manner, the network side device maps all the data layers into a QCL packet; When transmitting data in a non-correlated manner, the network side device maps data layers corresponding to different data layer subsets to different QCL groups, and the data layers corresponding to the same data layer subset are mapped to the same QCL group.

Optionally, in the state of open-loop spatial multiplexing, the packet mapping module 702 is specifically used to: when transmitting data in a related manner, the network side device maps all the data layers into a QCL packet; When transmitting data in a non-correlated manner, the network side device maps all the data layers to at least two QCL packets.

Optionally, in the state of open-loop spatial multiplexing, the packet mapping module 702 is also used to: when the data is transmitted in a non-correlated manner, the network side device will subset the same data layer The different data layers are mapped to different QCL packets.

Optionally, the network side device further includes: a code word limitation module, which is used to pre-configure a limit value for the number of code words on each QCL packet.

Optionally, the data transmission includes service data transmission or channel status information (CSI) transmission.

Optionally, the first transmission module 703 is also used to transmit corresponding control information in each QCL packet based on the QCL packet during service data transmission, and the control information is used to indicate the service data transmission Demodulation reference signal DMRS (De Modulation Reference Signal) port allocation, S-channel number SCID (S-Channel Identifier) and resource configuration.

Optionally, in the state of spatial multiplexing, when the data layer mapped by each codeword is mapped to a QCL packet, the first transmission module 703 is also used for: when performing service data transmission, The modulation and coding strategy MCS, the new data indicator NDI and the redundancy version RV of the codeword are notified separately in the QCL packet.

Optionally, when performing CSI transmission, the first transmission module 703 includes: a first sending unit, configured to send measurement configuration information to the terminal side device according to the QCL packet, and the measurement configuration information is used for: the terminal side The device performs CSI measurement on each antenna port in the QCL group; the second sending unit is configured to use the QCL group as a unit to send a CSI indicator signal on the resource corresponding to the antenna port of each QCL group; and the receiving unit uses After receiving the measurement result reported by the terminal-side device for measuring the CSI indicator signal based on the measurement configuration information.

Optionally, for the signals transmitted on the antenna ports of the same QCL group, the parameter values corresponding to the large-scale parameters of the channel experienced are within the same preset range.

Optionally, the large-scale parameter includes at least one of average gain, average delay, delay spread, average angle of arrival, and angle of arrival spread.

It should be noted that the above-mentioned network-side device in this embodiment can be the network-side device in the embodiment shown in Figs. 1 to 6, and any implementation manner of the network-side device in the embodiment shown in Figs. 1 to 6 can be used. It is realized by the above-mentioned network-side equipment in this embodiment and achieves the same or similar beneficial effects, which will not be repeated here.

Referring to Figure 8, the figure shows a terminal-side device structure. The terminal-side device includes a reference signal interaction module 801, which is used to perform uplink reference signal measurement or downlink reference signal measurement interaction with the network side device to communicate with the network side device. Each antenna port is grouped in quasi-co-location (QCL), and the QCL grouping is: antenna port grouping established according to the QCL relationship between the antenna ports; and a second transmission module 802 for data transmission based on the QCL grouping .

Optionally, when the reference signal interaction module 801 performs downlink reference signal measurement interaction with the network-side device, the terminal-side device further includes: a second determining module for determining the antennas of the network-side device according to the measurement result The QCL relationship of the port; the second grouping module is used to group the antenna ports according to the QCL relationship to obtain at least one QCL group; and the first reporting module is used to report the group corresponding to the at least one QCL group the way.

Optionally, the signal transmitted on the antenna port of the same QCL group has experienced The parameter values corresponding to the large-scale parameters of the channels are within the same preset range.

Optionally, the large-scale parameter includes at least one of average gain, average delay, delay spread, average angle of arrival, and angle of arrival spread.

Optionally, the data transmission includes service data transmission or channel status information (CSI) transmission.

Optionally, when performing CSI transmission, the terminal-side device further includes: a third receiving module for receiving measurement configuration information sent by the network-side device; and a second measurement module for matching the measurement configuration information according to the measurement configuration information. Each antenna port in the QCL group performs CSI measurement; a calculation module for calculating the CSI of the channel to be measured in the measurement configuration information based on a related transmission method or a non-related transmission method; and a second reporting module for Report the calculated CSI to the network side device.

Optionally, when the calculation module calculates the CSI of the channel to be measured in the measurement configuration information based on the related transmission method, the second reporting module is specifically configured to: report one or more QCLs to the network side device The CSI corresponding to the grouping; when the calculation module calculates the CSI of the channel to be measured in the measurement configuration information based on the unrelated transmission method, the second reporting module is specifically used to: report one or more to the network side device CSI corresponding to the QCL grouping combination.

Optionally, the CSI includes channel quality information and recommended transmission parameters.

It should be noted that the above-mentioned terminal-side device in this embodiment may be the terminal-side device in the embodiment shown in FIG. 1 to FIG. 6, and any implementation manner of the terminal-side device in the embodiment shown in FIG. 1 to FIG. 6 may be used. It is implemented by the above-mentioned terminal-side equipment in this embodiment, and achieves the same The beneficial effects will not be repeated here.

Referring to Figure 9, the figure shows the structure of a network-side device. The network-side device includes a processor 900, a transceiver 910, a memory 920, a user interface 930, and a bus interface. The processor 900 is used for Read the program in the memory 920 and perform the following process: map the codeword to at least one data layer; map the data layer to at least one quasi-co-location QCL group, the QCL grouping is: according to the distance between the antenna ports The antenna port grouping established by the QCL relationship; and based on the QCL grouping, data transmission is performed through the transceiver 910.

The transceiver 910 is used to receive and send data under the control of the processor 900.

In FIG. 9, the bus structure may include any number of interconnected bus bars and bridges. Specifically, one or more processors represented by the processor 900 and various circuits of the memory represented by the memory 920 are connected together. The busbar architecture can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are all known in the art, and therefore, no further description will be given here. The bus interface provides an interface. The transceiver 910 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium. For different user equipment, the user interface 930 may also be an interface that can externally and internally connect the required equipment. The connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 900 when performing operations.

Receive the DCI transmitted by the base station, where the DCI includes indication information used to indicate one or more of the TTI length, time domain position, and frequency domain position of the transmission resource; determine the transmission resource according to the indication information, and The transmission is performed on the transmission resource through the transceiver 910.

The transceiver 910 is used to receive and send data under the control of the processor 900.

In FIG. 9, the bus structure may include any number of interconnected bus bars and bridges. Specifically, one or more processors represented by the processor 900 and various circuits of the memory represented by the memory 920 are connected together. The busbar architecture can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are all known in the art, and therefore, no further description will be given here. The bus interface provides an interface. The transceiver 910 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium. For different user equipment, the user interface 930 may also be an interface that can externally and internally connect the required equipment. The connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, etc.

Optionally, the uplink reference signal sent by the terminal-side device can also be received through the transceiver 910.

The processor 900 is further configured to perform the following operations: perform uplink reference signal measurement according to the uplink reference signal; determine the QCL relationship of each antenna port according to the measurement result; and group the antenna ports according to the QCL relationship to obtain at least one QCL Grouping.

Optionally, the following operations can also be performed through the transceiver 910: sending a downlink reference signal to the terminal side device, the downlink reference signal is used for: the terminal side device performs a downlink reference signal measurement, and the antenna port of the network side device is determined according to the measurement result QCL relationship; and the receiving terminal side device QCL grouping the antenna port according to the QCL relationship and then reporting the grouping manner.

Optionally, in the state of non-spatial multiplexing, when the data transmission is a single-layer transmission, the processor 900 is further configured to perform the following operations: map the data layer to one or more QCL packets.

Optionally, in the state of non-spatial multiplexing, when the data transmission is multi-layer diversity transmission, the processor 900 is further configured to perform the following operations: when the data is transmitted in a related manner, the network side device transfers all the data The data layer is mapped to a QCL group; when the data is transmitted in a non-correlated way, the network side device maps the data layers corresponding to different data layer subsets to different QCL groups, and the same data layer subset corresponds to The data layer is mapped to one or more QCL packets.

Optionally, in the state of closed-loop spatial multiplexing, the processor 900 is further configured to perform the following operations: when transmitting data in a related manner, the network side device maps all the data layers into a QCL packet; When data is transmitted in a non-correlated way, the network side device maps the data layers corresponding to different data layer subsets to different QCL packets, and the data layer corresponding to the same data layer subset Map to the same QCL packet.

Optionally, in the state of open-loop spatial multiplexing, the processor 900 is further configured to perform the following operations: when transmitting data in a related manner, the network side device maps all the data layers into a QCL packet; When the data is transmitted in a non-correlated manner, the network side device maps all the data layers to at least two QCL packets.

Optionally, in the state of open-loop spatial multiplexing, the processor 900 is further configured to perform the following operations: when data is transmitted in a non-correlated manner, the network side device maps different data layers in the same data layer subset To different QCL groups.

Optionally, the processor 900 is further configured to perform the following operation: the network side device pre-configures a limit value for the number of codewords on each QCL packet.

Optionally, the data transmission includes service data transmission or channel status information (CSI) transmission.

Optionally, the processor 900 is further configured to perform the following operations: when performing service data transmission, based on the QCL packet, respectively transmit corresponding control information in each QCL packet, and the control information is used to indicate the service data transmission Demodulation reference signal DMRS port allocation, S channel number SCID and resource allocation situation.

Optionally, the processor 900 is further configured to perform the following operations: in each QCL packet, the modulation and coding strategy MCS, the new data indicator NDI and the redundancy version RV are notified in each QCL packet. .

Optionally, when performing CSI transmission, the transceiver 910 can also perform the following operations: according to the QCL packet, the measurement configuration information sent to the terminal-side device, the measurement configuration information is used: the terminal-side device in the QCL packet CSI measurement is performed on each antenna port of the QCL group; the CSI indicator signal is sent on the resource corresponding to the antenna port of each QCL group with the QCL group as a unit; and the terminal side device is received to measure the CSI indicator signal based on the measurement configuration information The reported measurement results.

Optionally, for the signals transmitted on the antenna ports of the same QCL group, the parameter values corresponding to the large-scale parameters of the channel experienced are within the same preset range.

Optionally, for the signals transmitted on the antenna ports of the same QCL group, the parameter values corresponding to the large-scale parameters of the channel experienced are within the same preset range.

Optionally, the large-scale parameter includes at least one of average gain, average delay, delay spread, average angle of arrival, and angle of arrival spread.

It should be noted that the above-mentioned network-side device in this embodiment can be the network-side device in the embodiment shown in Figs. 1 to 6, and any implementation manner of the network-side device in the embodiment shown in Figs. 1 to 6 can be used. It is realized by the above-mentioned network-side equipment in this embodiment and achieves the same or similar beneficial effects, which will not be repeated here.

Referring to FIG. 10, the figure shows the structure of a terminal-side device. The terminal-side device includes a processor 1000, a transceiver 1010, a memory 1020, a user interface 1030, and a bus interface. The processor 1000 is used for Read the program in the memory 1020 and execute the following process: Perform uplink reference signal measurement or downlink reference signal measurement interaction with the network-side device through the transceiver 1010 to perform quasi-co-location (QCL) grouping for each antenna port of the network-side device. The QCL grouping is: The antenna port grouping established by the QCL relationship; based on the QCL grouping, data transmission is performed.

Optionally, when the transceiver 1010 performs a downlink reference signal measurement interaction with a network measurement device, the processor 1000 is configured to perform the following operations: determine the QCL relationship of each antenna port of the network side device according to the measurement result; The QCL relationship groups the antenna ports to obtain at least one QCL group; the transceiver 1010 reports the grouping mode corresponding to the at least one QCL group.

Optionally, for the signals transmitted on the antenna ports of the same QCL group, the parameter values corresponding to the large-scale parameters of the channel experienced are within the same preset range.

Optionally, the large-scale parameter includes at least one of average gain, average delay, delay spread, average angle of arrival, and angle of arrival spread.

Optionally, the data transmission includes service data transmission or channel status information (CSI) transmission.

Optionally, when performing CSI transmission, the transceiver 1010 receives measurement configuration information sent by the network side device; the processor 1000 is further configured to: perform CSI on each antenna port in the QCL group according to the measurement configuration information Measurement; Calculate the CSI of the channel to be measured in the measurement configuration information based on a related transmission method or a non-related transmission method; and report the calculated CSI to the network side device through the transceiver 1010.

Optionally, when the processor 1000 calculates the measurement based on the relevant transmission mode When measuring the CSI of the channel to be measured in the measurement configuration information, the transceiver 1010 reports the CSI corresponding to one or more QCL packets to the network side device; when the processor 1000 calculates the CSI in the measurement configuration information based on the unrelated transmission method When measuring the CSI of the channel, the transceiver 1010 reports the CSI corresponding to one or more QCL packet combinations to the network side device.

Optionally, the CSI includes channel quality information and recommended transmission parameters.

It should be noted that the above-mentioned terminal-side device in this embodiment may be the terminal-side device in the embodiment shown in FIG. 1 to FIG. 6, and any implementation manner of the terminal-side device in the embodiment shown in FIG. 1 to FIG. 6 may be used. It is realized by the above-mentioned terminal-side device in this embodiment and achieves the same or similar beneficial effects, which will not be repeated here.

A person of ordinary skill in the art may be aware that the units and algorithm steps described in the examples in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the present invention.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the system, device and unit described above can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the embodiments provided by the present invention, it should be understood that the disclosed device and method may be implemented in other ways. For example, the device embodiment described above is only illustrative. For example, the division of the unit is only a logical function division. In actual implementation, There may be other divisions, for example, multiple units or elements may be combined or integrated into another system, or some features may be omitted or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The unit described as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present invention.

In addition, the functional units in the various embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

If this function is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several The instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method in each embodiment of the present invention. The aforementioned storage media include: flash drives, removable hard drives, ROM, RAM, magnetic disks, or optical disks and other media that can store program codes.

The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. It should be covered within the protection scope of the present invention. therefore, The protection scope of the present invention shall be subject to the protection scope of the applied patent.

201-203: Steps

Claims (21)

A data transmission control method includes: a network side device maps codewords to at least one data layer based on the number of layers and the number of codewords; the network side device maps the data layer to at least one quasi-common location (QCL) In terms of grouping, the QCL grouping is: antenna port grouping established according to the QCL relationship between the antenna ports; and the network side device performs data transmission based on the QCL grouping. The data transmission control method according to claim 1, wherein, before the step of mapping the codeword to at least one data layer by the network side device, the method further includes: the network side device receiving the uplink reference signal sent by the terminal side device ; The network side device performs uplink reference signal measurement according to the uplink reference signal; the network side device determines the QCL relationship of each antenna port according to the measurement result; and the network side device groups the antenna ports according to the QCL relationship to obtain At least one QCL group. The data transmission control method according to claim 1, wherein, before the step of mapping the codeword to at least one data layer by the network-side device, the method further includes: the network-side device sends a downlink reference signal to the terminal-side device, The downlink reference signal is used for: the terminal-side device performs downlink reference signal measurement, and determines the QCL relationship of each antenna port of the network-side device according to the measurement result; and the network-side device receives the terminal-side device to perform QCL on the antenna port according to the QCL relationship The grouping method for reporting after grouping. The data transmission control method according to any one of claims 1 to 3, wherein, in a non-spatial multiplexing state, when the data transmission is multi-layer diversity transmission, the network side device maps the data layer to at least The steps on a quasi-common location (QCL) packet include: when the data is transmitted in a related way, the network side device maps all the data layers into a QCL packet; when the data is transmitted in a non-correlated way, the network Roadside equipment corresponds to different data layer subsets The data layers of are mapped to different QCL groups, and the data layers corresponding to the same data layer subset are mapped to one or more QCL groups. The data transmission control method according to any one of claims 1 to 3, wherein, in a state of closed-loop spatial multiplexing, the network side device maps the data layer to at least one quasi-co-location (QCL) packet The steps include: when transmitting data in a related manner, the network side device maps all the data layers into a QCL packet; when transmitting data in a non-related manner, the network side device corresponds to different data layer subsets The data layers of are mapped to different QCL groups, and the data layers corresponding to the same data layer subset are mapped to the same QCL group. The data transmission control method according to any one of claims 1 to 3, wherein, in the state of open-loop spatial multiplexing, the network side device maps the data layer to at least one quasi-co-location (QCL) packet The steps include: when the data is transmitted in a related manner, the network side device maps all the data layers into a QCL packet; when the data is transmitted in a non-related manner, the network side device maps all the data layers To at least two QCL packets. The data transmission control method according to claim 6, wherein the step of mapping the data layer to at least one quasi colocation (QCL) packet by the network side device further includes: when the data is transmitted in a non-correlated manner, the The network side device maps different data layers in the same data layer subset to different QCL packets. The data transmission control method according to claim 6, wherein, before the step of mapping the data layer to at least one quasi colocation (QCL) packet by the network-side device, the method further includes: the network-side device pre-configures each A limit value for the number of codewords on a QCL packet. The data transmission control method according to any one of claims 1 to 3, wherein the data transmission includes service data transmission or channel status information (CSI) transmission. The data transmission control method according to claim 9, wherein the method further includes: When the network-side equipment transmits service data, it transmits corresponding control information in each QCL packet based on the QCL packet. The control information is used to indicate the demodulation reference signal DMRS port allocation and S channel allocation during service data transmission. Number SCID and resource configuration. The data transmission control method according to claim 10, wherein, in the state of spatial multiplexing, when the data layer mapped by each codeword is mapped to a QCL packet, the method further includes: the network side device is performing business During data transmission, the modulation and coding strategy MCS of the codeword, the new data indicator NDI and the redundancy version RV are notified separately in each QCL packet. The data transmission control method according to claim 9, wherein when the CSI transmission is performed, the network side device performs data transmission based on the QCL packet, and the step of data transmission includes: the network side device sends to the terminal side device according to the QCL packet The measurement configuration information is used for: the terminal-side device performs CSI measurement on each antenna port in the QCL group; the network-side device uses the QCL group as the unit, and the resource corresponding to the antenna port of each QCL group The CSI indicator signal is sent on the network side device; and the network side device receives the measurement result reported by the terminal side device for measuring the CSI indicator signal based on the measurement configuration information. A data transmission control method includes: a terminal side device and a network side device perform uplink reference signal measurement or downlink reference signal measurement interaction to perform quasi colocation (QCL) grouping of each antenna port of the network side device, wherein the network side device The codewords are mapped to at least one data layer based on the number of layers and the number of codewords, and the QCL grouping is: antenna port grouping established according to the QCL relationship between the antenna ports; and the terminal-side device is based on the QCL grouping For data transfer. The data transmission control method according to claim 13, wherein, when the terminal-side device and the network-side device perform downlink reference signal measurement interaction, the terminal-side device performs the data transmission step based on the QCL packet, the method also Including: the terminal side device determines the QCL relationship of each antenna port of the network side device according to the measurement result; and The terminal-side device groups the antenna ports according to the QCL relationship to obtain at least one QCL group; and the terminal-side device reports the grouping mode corresponding to the at least one QCL group. The data transmission control method according to claim 13 or 14, wherein the data transmission includes service data transmission or channel status information (CSI) transmission. The data transmission control method according to claim 15, wherein when the CSI transmission is performed, the method further includes: the terminal-side device receives the measurement configuration information sent by the network-side device; the terminal-side device checks the measurement configuration information according to the measurement configuration information. Each antenna port in the QCL group performs CSI measurement; the terminal-side device calculates the CSI of the channel to be measured in the measurement configuration information based on a related transmission method or an unrelated transmission method; and the terminal-side device reports to the network-side device Calculated CSI. The data transmission control method according to claim 16, wherein, when the terminal-side device calculates the CSI of the channel to be measured in the measurement configuration information based on the related transmission method, the terminal-side device reports the calculation to the network-side device The steps of obtaining the CSI include: reporting one or more QCL packets corresponding to the CSI to the network side device; when the terminal side device calculates the CSI of the channel to be measured in the measurement configuration information based on the non-correlated transmission method, the terminal side The step of the device reporting the calculated CSI to the network side device includes: reporting the CSI corresponding to one or more QCL packet combinations to the network side device. A network side device, comprising: a processor, a memory, and a computer program stored on the memory and capable of running on the processor. The computer program is executed by the processor to implement any one of request items 1 to 12 The steps in the data transmission control method described in item. A terminal-side device, comprising: a processor, a memory, and a computer program stored on the memory and running on the processor. The computer program is executed by the processor to achieve any of the items 13 to 17 The steps in the data transmission control method described in item. A computer-readable storage medium with a computer program stored on the computer-readable storage medium, and the electronic When the brain program is executed by the processor, the steps in the data transmission control method as described in any one of request items 1 to 12 are realized. A computer-readable storage medium has a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps in the data transmission control method according to any one of claim items 13 to 17 are realized.

Images