CN109391401B

CN109391401B - Transmission method of downlink control information, base station, terminal and storage medium

Info

Publication number: CN109391401B
Application number: CN201710681981.4A
Authority: CN
Inventors: 郭保娟; 苏昕
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2017-08-10
Filing date: 2017-08-10
Publication date: 2021-07-23
Anticipated expiration: 2037-08-10
Also published as: CN109391401A

Abstract

The invention provides a transmission method of downlink control information, a base station, a terminal and a computer readable storage medium, wherein the transmission method of the downlink control information comprises the following steps: transmitting downlink control information to the terminal through a group common physical downlink control channel; the downlink control information includes part or all of information required for the terminal to receive and demodulate data. The scheme transmits downlink control information to the terminal through a group of common physical downlink control channels; the signaling transmission of the DMRS for channel estimation can be used when multi-stream data is sent, system resource overhead is greatly saved, and the problem that the transmission scheme of downlink control information wastes system resources in the prior art is well solved.

Description

Transmission method of downlink control information, base station, terminal and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, a base station, a terminal, and a computer-readable storage medium for transmitting downlink control information.

Background

The number of data streams transmitted simultaneously in MU-MIMO (Multi-User Multi-Input Multi-Output) of a large-scale antenna system can be greatly increased. Currently, in the LTE system, a user may perform channel estimation through a dedicated DMRS (DeModulation Reference Signal), which performs the same precoding operation as a data Signal. DCI (Downlink Control Information) notified to a terminal is transmitted through a PDCCH (Physical Downlink Control Channel), and the DCI is based on a user and does not need to be shared among different users.

After a 5G New air interface (NR) project is started, in order to reduce processing delay and improve system performance, the DMRS pilot frequency pattern is designed and defined again. In the new DMRS pilot pattern, there are a number of different pilot patterns. The concrete configuration is as follows:

configuration 1:

DMRS symbol number 1 with comb2+ CS2, maximum support to 4 ports.

(1) See fig. 1 (maximum 4 antenna ports are supported), where comb2 is frequency domain multiplexing, for example, the multiplexing relationship between ports 0 and 2 is comb 2. CS2 multiplexes sequences between ports by cyclic shifts, for example, the multiplexing relationship between ports 0 and 1 is CS 2.

DMRS symbol number 2 with comb2+ CS2+ TD-OCC ({ 11 } and {1-1}), maximum support to 8 ports.

(2) Referring to fig. 2 (up to 8 antenna ports are supported), the TD-OCC is time domain OCC (Orthogonal Code) multiplexing, for example, time domain OCC multiplexing is adopted between ports 0/1 and 4/5.

Configuration 2

The number of DMRS symbols is 1, 2-FD-OCC (adjacent frequency domain resource element RE) is adopted, and maximum support is realized to 6 ports.

(1) See fig. 3 (maximum support of 6 antenna ports), 2-FD-OCC, i.e. frequency domain OCC multiplexing, e.g. between ports 0 and 1. In addition, FDM (Frequency Division Multiplexing) is adopted between the ports, for example, FDM is adopted between the ports 0/1 and 2/3.

DMRS symbol number 2 with 2-FD-OCC (adjacent frequency domain RE) + TD-OCC ({ 11 } and {1-1}), maximum support to 12 ports.

(1) Referring to fig. 4 (maximum support 12 antenna ports), TD-OCC is time domain OCC (orthogonal Cover code) multiplexing, for example, time domain OCC multiplexing is adopted between ports 0/1 and 6/7.

As can be seen from the above-mentioned various patterns of DMRSs, the configuration1 may be configured by using the pattern of fig. 1 if the maximum number of supported ports is not more than 4, or may be configured by using the pattern of fig. 2 if the maximum number of supported ports is more than 4 but not more than 8; in the case of configuration2, if the maximum number of supported ports does not exceed 6, it may be configured with the pattern of fig. 3, and if it exceeds 6, but does not exceed 12, it may be configured with the pattern of fig. 4. The port number here is the sum of the port numbers of all the users multiplexed on the resource location.

In order to support the correct demodulation of the users under MU-MIMO, the terminal needs to be informed of the total port number information of all users on each scheduling resource. The information is the same for all MU-MIMO users on the scheduling resource, so if information transmission is performed based on the PDCCH of the user, all MU-MIMO users need to be transmitted through their own PDCCHs, which may result in waste of system resources.

That is, for the determined patterns of various configurations of DMRSs, in MU-MIMO, the number of multiplexed users is different on different time-frequency resources, so that the number of DMRS ports multiplexed simultaneously on different resources is different, and different port numbers may use different DMRS pilot patterns according to the existing DMRS configuration information. However, the information (pilot pattern) is the same for all users of MU-MIMO on the scheduling resource, so if information transmission is performed based on the PDCCH of a user, all users of MU-MIMO need to be transmitted through their own PDCCH, which results in waste of system resources.

Disclosure of Invention

The invention aims to provide a transmission method of downlink control information, a base station, a terminal and a computer readable storage medium, which solve the problem that the transmission scheme of the downlink control information wastes system resources in the prior art.

In order to solve the foregoing technical problem, an embodiment of the present invention provides a method for transmitting downlink control information, including:

transmitting downlink control information to the terminal through a group common physical downlink control channel;

the downlink control information includes part or all of information required by the terminal to receive and demodulate data.

Optionally, when the downlink control information includes part of information required by the terminal to receive and demodulate data, the step of issuing the downlink control information to the terminal through the group common physical downlink control channel includes:

sending periodic information in the downlink control information to the terminal through a group common physical downlink control channel;

the periodic information comprises a first average value of the total port number of the multiple input multiple output multiplexing in a first preset time period or a second average value of demodulation reference signal configuration information corresponding to the total port number;

the first average value and the second average value are both average values for the number of times.

Optionally, the transmission method further includes:

issuing deviation information to the terminal through a special physical downlink control channel corresponding to the terminal;

and the deviation information is the deviation information between the instantaneous information and the periodic information when the terminal schedules the resources each time.

Optionally, when the downlink control information includes all information required by the terminal to receive and demodulate data, the step of issuing the downlink control information to the terminal through the group common physical downlink control channel includes:

and issuing the total port number of the multiple input multiple output multiplexing in the downlink control information or demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel.

Optionally, the step of issuing, to the terminal, a total port number of the mimo multiplexing in the downlink control information or demodulation reference signal configuration information corresponding to the total port number through grouping a common physical downlink control channel includes:

and if the total port number is different from the total port number sent last time, or the demodulation reference signal configuration information is different from the demodulation reference signal configuration information sent last time, issuing the total port number or the demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel.

Optionally, before issuing the total port number or demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel, the transmission method further includes:

and carrying a monitoring indication in the information which is transmitted through the special physical downlink control channel at the last time, wherein the monitoring indication is used for indicating the terminal to monitor the group common downlink control channel in a second preset time period.

The embodiment of the invention also provides a method for transmitting the downlink control information, which comprises the following steps:

receiving downlink control information issued by a base station through a group common physical downlink control channel;

receiving and demodulating data according to the downlink control information;

Optionally, when the downlink control information includes partial information required by the terminal to receive and demodulate data, the step of receiving the downlink control information issued by the base station through the group common physical downlink control channel includes:

receiving periodic information in downlink control information issued by the base station through a group common physical downlink control channel;

Optionally, the step of receiving, by grouping the common physical downlink control channel, the periodic information in the downlink control information sent by the base station includes:

monitoring a group common physical downlink control channel according to a first preset time period, and receiving periodic information in downlink control information issued by the base station; alternatively, the first and second electrodes may be,

and receiving periodic information in the downlink control information issued by the base station through a continuous blind detection group public physical downlink control channel.

Optionally, the transmission method further includes:

receiving the deviation information issued by the base station through a special physical downlink control channel corresponding to the terminal;

Optionally, the step of receiving and demodulating data according to the downlink control information includes:

obtaining the total port number of the MIMO multiplexing when the terminal dispatches the resource each time according to the first average value and the deviation information; or obtaining demodulation reference signal configuration information corresponding to the terminal when the resource is scheduled each time according to the second average value and the deviation information;

and receiving and demodulating data according to the total port number or the demodulation reference signal configuration information.

Optionally, when the downlink control information includes all information required by the terminal to receive and demodulate data, the step of receiving the downlink control information issued by the base station through the group common physical downlink control channel includes:

receiving the total port number of the multiple input multiple output multiplexing or the demodulation reference signal configuration information corresponding to the total port number in the downlink control information issued by the base station through grouping the public physical downlink control channel.

Optionally, the step of receiving, through a group common physical downlink control channel, a total port number of multiple input multiple output multiplexing in downlink control information issued by a base station or demodulation reference signal configuration information corresponding to the total port number includes:

receiving the total port number of the multiple input multiple output multiplexing or the demodulation reference signal configuration information corresponding to the total port number in the downlink control information issued by the base station through the continuous blind detection group public physical downlink control channel.

Optionally, before receiving, through a group common physical downlink control channel, a total port number of multiple input multiple output multiplexing in downlink control information sent by a base station or demodulation reference signal configuration information corresponding to the total port number, the transmission method further includes:

receiving a monitoring indication issued by a base station;

the step of receiving the total port number of the multiple input multiple output multiplexing or the demodulation reference signal configuration information corresponding to the total port number in the downlink control information issued by the base station through grouping the common physical downlink control channel comprises the following steps:

and monitoring a common physical downlink control channel in a second preset time period according to the monitoring indication, and receiving the total port number of the multiple input multiple output multiplexing in the downlink control information issued by the base station or demodulation reference signal configuration information corresponding to the total port number.

The embodiment of the present invention further provides a device for transmitting downlink control information, including:

the first sending module is used for sending downlink control information to the terminal through a group common physical downlink control channel;

Optionally, when the downlink control information includes partial information required by the terminal to receive and demodulate data, the first sending module includes:

the first sending submodule is used for sending periodic information in the downlink control information to the terminal through a group common physical downlink control channel;

Optionally, the transmission device further includes:

the second sending module is used for sending deviation information to the terminal through a special physical downlink control channel corresponding to the terminal;

Optionally, when the downlink control information includes all information required by the terminal to receive and demodulate data, the first sending module includes:

and the second sending submodule is used for sending the total port number of the multiple input multiple output multiplexing in the downlink control information or demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel.

Optionally, the second sending submodule includes:

a first sending unit, configured to, if the total port number is different from the total port number sent last time, or the demodulation reference signal configuration information is different from the demodulation reference signal configuration information sent last time, send the total port number or the demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel.

Optionally, the transmission device further includes:

the first processing module is configured to carry a monitoring instruction in information that is issued last time through a dedicated physical downlink control channel before issuing the total port number or demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel, where the monitoring instruction is used to instruct the terminal to monitor the group common downlink control channel in a second preset time period.

a first receiving module, configured to receive downlink control information sent by a base station through a group common physical downlink control channel;

the second processing module is used for receiving and demodulating data according to the downlink control information;

Optionally, when the downlink control information includes partial information required by the terminal to receive and demodulate data, the first receiving module includes:

a first receiving submodule, configured to receive, through a group common physical downlink control channel, periodic information in downlink control information sent by the base station;

Optionally, the first receiving sub-module includes:

a first receiving unit, configured to monitor a group common physical downlink control channel according to a first preset time period, and receive periodic information in downlink control information sent by the base station; alternatively, the first and second electrodes may be,

Optionally, the transmission device further includes:

a second receiving module, configured to receive, through a dedicated physical downlink control channel corresponding to the terminal, the deviation information issued by the base station;

Optionally, the second receiving module includes:

the first processing submodule is used for obtaining the total port number of the MIMO multiplexing when the terminal dispatches resources each time according to the first average value and the deviation information; or obtaining demodulation reference signal configuration information corresponding to the terminal when the resource is scheduled each time according to the second average value and the deviation information;

and the second processing submodule is used for receiving and demodulating data according to the total port number or the demodulation reference signal configuration information.

Optionally, when the downlink control information includes all information required by the terminal to receive and demodulate data, the first receiving module includes:

and the second receiving submodule is used for receiving the total port number of the multiple input multiple output multiplexing in the downlink control information issued by the base station or the demodulation reference signal configuration information corresponding to the total port number through the group common physical downlink control channel.

Optionally, the second receiving sub-module includes:

and a second receiving unit, configured to receive, through a persistent blind detection group common physical downlink control channel, a total number of multiple-input multiple-output multiplexed ports in downlink control information issued by a base station or demodulation reference signal configuration information corresponding to the total number of ports.

Optionally, the transmission device further includes:

a third receiving module, configured to receive a monitoring instruction issued by the base station before receiving, through a group common physical downlink control channel, a total port number of multiple input multiple output multiplexing in downlink control information issued by the base station or demodulation reference signal configuration information corresponding to the total port number;

the second receiving submodule includes:

and a third receiving unit, configured to monitor a common physical downlink control channel in a second preset time period according to the monitoring indication, and receive a total port number of multiple input multiple output multiplexing or demodulation reference signal configuration information corresponding to the total port number in downlink control information issued by a base station.

The embodiment of the invention also provides a base station, which comprises a memory, a processor, a transceiver and a computer program which is stored on the memory and can run on the processor; the processor implements the following steps when executing the program:

The embodiment of the invention also provides a terminal, which comprises a memory, a processor, a transceiver and a computer program which is stored on the memory and can run on the processor; the processor implements the following steps when executing the program:

receiving and demodulating data according to the downlink control information;

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the following steps:

receiving and demodulating data according to the downlink control information;

The technical scheme of the invention has the following beneficial effects:

in the above scheme, the transmission method of the downlink control information issues the downlink control information to the terminal through a group common physical downlink control channel; the signaling transmission of the DMRS for channel estimation can be used when multi-stream data is sent, system resource overhead is greatly saved, and the problem that the transmission scheme of downlink control information wastes system resources in the prior art is well solved.

Drawings

Fig. 1 shows a first configuration mode of a demodulation reference signal in the prior art;

fig. 2 shows a second configuration mode of a demodulation reference signal in the prior art;

fig. 3 shows a third configuration mode of a demodulation reference signal in the prior art;

fig. 4 shows a configuration pattern four of a demodulation reference signal in the prior art;

fig. 5 is a first flowchart illustrating a method for transmitting downlink control information according to an embodiment of the present invention;

fig. 6 is a flowchart illustrating a second method for transmitting downlink control information according to an embodiment of the present invention;

fig. 7 is a first schematic structural diagram of a transmission apparatus for downlink control information according to an embodiment of the present invention;

fig. 8 is a second schematic structural diagram of a transmission apparatus for downlink control information according to an embodiment of the present invention;

fig. 9 is a schematic structural diagram of a base station according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The present invention provides a method for transmitting downlink control information, which is applicable to a base station side, and as shown in fig. 5, the method includes:

step 51: transmitting downlink control information to the terminal through a group common physical downlink control channel;

the downlink control information includes part or all of information required by the terminal to receive and demodulate data. The group common physical downlink control channel may be understood as a common physical downlink control channel for a plurality of users grouped based on a predetermined principle.

The embodiment of the invention provides a transmission method of downlink control information, which transmits the downlink control information to a terminal through a group common physical downlink control channel; the signaling transmission of the DMRS for channel estimation can be used when multi-stream data is sent, system resource overhead is greatly saved, and the problem that the transmission scheme of downlink control information wastes system resources in the prior art is well solved.

For the inclusion of the downlink control information, the embodiment of the present invention provides two schemes for step 51:

first, when the downlink control information includes partial information required for the terminal to receive and demodulate data, the step of issuing the downlink control information to the terminal through a group common physical downlink control channel includes: sending periodic information in the downlink control information to the terminal through a group common physical downlink control channel; the periodic information comprises a first average value of the total port number of the multiple input multiple output multiplexing in a first preset time period or a second average value of demodulation reference signal configuration information corresponding to the total port number; the first average value and the second average value are both average values for the number of times.

The first average value can be understood as the ratio of the sum a of the total port numbers of the mimo multiplexing when the resource is called each time in the first preset time period to the number B of times the resource is called in the first preset time period;

the second average value can be understood as a ratio of a sum C of demodulation reference signal configuration information of mimo multiplexing at each time of resource invocation within the first preset time period to a number B of times of resource invocation within the first preset time period.

Further, the transmission method further includes: issuing deviation information to the terminal through a special physical downlink control channel corresponding to the terminal; and the deviation information is the deviation information between the instantaneous information and the periodic information when the terminal schedules the resources each time.

Second, when the downlink control information includes all information required by the terminal to receive and demodulate data, the step of issuing the downlink control information to the terminal through the group common physical downlink control channel includes: and issuing the total port number of the multiple input multiple output multiplexing or the demodulation reference signal configuration information corresponding to the total port number (which may be issued in real time or issued based on instructions or requirements, and the like, and is not limited herein; and the issued information may be the total port number or an index of the demodulation reference signal configuration information).

Specifically, the step of issuing, to the terminal, the total port number of the mimo multiplexing in the downlink control information or the demodulation reference signal configuration information corresponding to the total port number through grouping the common physical downlink control channel includes: and if the total port number is different from the total port number sent last time, or the demodulation reference signal configuration information is different from the demodulation reference signal configuration information sent last time, issuing the total port number or the demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel.

Further, before issuing the total port number or demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel, the transmission method further includes: and carrying a monitoring indication in the information which is transmitted through the special physical downlink control channel at the last time, wherein the monitoring indication is used for indicating the terminal to monitor the group common downlink control channel in a second preset time period.

The DMRS configuration information actually scheduled by the user may be transmitted in a conventional manner, and is not described again.

As can be seen from the above, the method for transmitting downlink control information provided in the embodiments of the present invention well solves the problem that the transmission scheme of downlink control information wastes system resources in the prior art.

An embodiment of the present invention further provides a method for transmitting downlink control information, which can be applied to a terminal side, as shown in fig. 6, and includes:

step 61: receiving downlink control information issued by a base station through a group common physical downlink control channel;

step 62: receiving and demodulating data according to the downlink control information;

the downlink control information includes part or all of information required by the terminal to receive and demodulate data. The group common physical downlink control channel may be understood as a common physical downlink control channel for a plurality of users grouped into a group based on a predetermined principle, and the terminal belongs to the group corresponding to the group common physical downlink control channel (it may also be understood that the terminal is one user in the group corresponding to the group common physical downlink control channel).

The method for transmitting the downlink control information provided by the embodiment of the invention receives the downlink control information issued by the base station through grouping the common physical downlink control channel, and receives and demodulates data according to the downlink control information, so that the occupancy rate of the special physical downlink control channel of the system is reduced, the system resource overhead is greatly saved, and the problem that the system resource is wasted by the transmission scheme of the downlink control information in the prior art is well solved.

For the inclusion of the downlink control information, the embodiment of the present invention provides two schemes for step 61:

first, when the downlink control information includes partial information required for receiving and demodulating data by the terminal, the step of receiving the downlink control information issued by the base station through the group common physical downlink control channel includes: receiving periodic information in downlink control information issued by the base station through a group common physical downlink control channel; the periodic information comprises a first average value of the total port number of the multiple input multiple output multiplexing in a first preset time period or a second average value of demodulation reference signal configuration information corresponding to the total port number; the first average value and the second average value are both average values for the number of times.

Specifically, the step of receiving the periodic information in the downlink control information issued by the base station through the group common physical downlink control channel includes: monitoring a group common physical downlink control channel according to a first preset time period, and receiving periodic information in downlink control information issued by the base station; or, receiving periodic information in the downlink control information issued by the base station through a continuous blind detection group common physical downlink control channel.

Further, the transmission method further includes: receiving the deviation information issued by the base station through a special physical downlink control channel corresponding to the terminal; and the deviation information is the deviation information between the instantaneous information and the periodic information when the terminal schedules the resources each time.

Wherein, the step of receiving and demodulating data according to the downlink control information comprises: obtaining the total port number of the MIMO multiplexing when the terminal dispatches the resource each time according to the first average value and the deviation information; or obtaining demodulation reference signal configuration information corresponding to the terminal when the resource is scheduled each time according to the second average value and the deviation information; and receiving and demodulating data according to the total port number or the demodulation reference signal configuration information.

Second, when the downlink control information includes all information required by the terminal to receive and demodulate data, the step of receiving the downlink control information issued by the base station through the group common physical downlink control channel includes: the total port number of the multiple input multiple output multiplexing in the downlink control information sent by the base station or the demodulation reference signal configuration information corresponding to the total port number is received through the group common physical downlink control channel (the total port number or the demodulation reference signal configuration information may be received in real time or based on instructions or requirements, and the like, and is not limited herein; and the received information may be the total port number or the index of the demodulation reference signal configuration information).

Specifically, the step of receiving, through a group common physical downlink control channel, a total port number of multiple input multiple output multiplexing in downlink control information issued by a base station or demodulation reference signal configuration information corresponding to the total port number includes: receiving the total port number of the multiple input multiple output multiplexing or the demodulation reference signal configuration information corresponding to the total port number in the downlink control information issued by the base station through the continuous blind detection group public physical downlink control channel.

Further, before receiving, through a group common physical downlink control channel, a total port number of multiple-input multiple-output multiplexing in downlink control information issued by a base station or demodulation reference signal configuration information corresponding to the total port number, the transmission method further includes: receiving a monitoring indication issued by a base station;

correspondingly, the step of receiving the total port number of the mimo multiplexing or the demodulation reference signal configuration information corresponding to the total port number in the downlink control information issued by the base station through the group common physical downlink control channel includes: and monitoring a common physical downlink control channel in a second preset time period according to the monitoring indication, and receiving the total port number of the multiple input multiple output multiplexing in the downlink control information issued by the base station or demodulation reference signal configuration information corresponding to the total port number.

The method for transmitting the downlink control information provided by the embodiment of the present invention is further described below with reference to the base station and the terminal.

Considering that two kinds of PDCCHs are available under the current 5G New air interface (NR), one is a group common PDCCH and the other is a user-specific PDCCH (UE specific PDCCH). NR divides users into multiple groups based on some principles, for example, based on beamforming direction, each group may transmit one group common PDCCH, and the current group common PDCCH only supports periodic allocable transmission. The UE periodically monitors the group common PDCCH. The PDCCH special for the user has the same transmission mode with the PDCCH of the LTE system, and the PDCCH can be transmitted at any time according to the scheduling requirement.

The DCI information about DMRS configuration that needs PDCCH transmission includes the number of ports on multiple RBG (Resource Block Group) resources or DMRS configuration information, and DMRS configuration information on each scheduling Resource of the user.

The DMRS configuration information may define a configuration table, and configure various configuration information of the DMRS for the terminal in a table lookup manner, such as the port number, FDM (frequency division multiplexing), CS (cyclic shift), OCC, and the total port number (or the total port number range that can be supported), power offset (power offset), and the like.

If the value of the total port number of a certain MU-MIMO multiplexing corresponds to one DMRS configuration index in the DMRS configuration table, the terminal may obtain the information by notifying the terminal of the total port number (as can be seen from fig. 1 to 4, under the condition of different total port numbers, corresponding DMRS configurations are different, specifically, resources occupied by the DMRS configurations are different, such as one or two OFDM symbols are occupied).

If the value of the total port number of a certain MU-MIMO multiplexing corresponds to a plurality of DMRS configuration indexes in the DMRS configuration table, the terminal cannot obtain the information by notifying the terminal of the total port number, and the terminal can be notified of the index by notifying the terminal of the total port number to obtain the corresponding DMRS configuration index.

In combination with the above, to solve the above technical problem, an embodiment of the present invention provides a method for transmitting downlink control information, which may specifically include the following examples (in an example, the transmitted information may be the total port number or DMRS configuration index, and may be supported, and the difference is that bit overhead is different):

example one:

the method includes the steps that periodic information is transmitted by using a group common PDCCH (physical downlink control channel) and serves as a first-level indication, for example, the total port number (the total port number of multiple input multiple output multiplexing) in a period of time or the average value of DMRS configuration information corresponding to the periodic information is transmitted, and a user-specific PDCCH (a dedicated physical downlink control channel corresponding to a terminal) is used for transmitting the difference value of instant information scheduled each time relative to the first-level indication information, namely, a second-level indication and the DMRS configuration information of the user. For example, the first level is denoted as P0, and the second level is denoted as deltaP, where P0 is the average information in the period T, and deltaP is the difference between the information of each scheduling unit time in the period T and P0.

Since the group common PDCCH can be notified to multiple terminals at the same time, and the overhead is reduced compared with the dedicated PDCCH, that is, in the scheme of the example i, one piece of mean value information is transmitted by using the group common PDCCH, and the dedicated PDCCH gives a difference value, so that the transmission overhead can be reduced compared with the case of directly transmitting DMRS configuration information.

Example two:

the total port number or the corresponding DMRS configuration information is transmitted by using the group common PDCCH, and the DMRS configuration information actually scheduled by the user (the DMRS configuration information of the user) is transmitted by using the user-specific PDCCH. Because the existing group common PDCCH only supports a periodic transmission mode, if the total port number or the corresponding DMRS configuration information changes, the base station can be triggered to transmit the group common PDCCH in an event triggering mode, namely, the base station is triggered to transmit the group common PDCCH by taking whether the total port number or the corresponding DMRS configuration information changes as a triggering condition (the event is that the total port number or the corresponding DMRS configuration information changes, and the base station judges whether to transmit the dedicated PDCCH according to whether the information changes or not). The monitoring modes of the group-common PDCCH by the terminal may be the following two types:

first, a function of adding a 1-bit indication to a user dedicated PDCCH can be used to notify a terminal that a group common PDCCH needs to be received (when it is determined that the group common PDCCH needs to be transmitted, an information indication whether a 1-bit is given to the dedicated PDCCH is transmitted last time, and the terminal is told that the group common PDCCH needs to be monitored immediately); if the information is 1: and then searching for a reception group common PDCCH on the group common PDCCH resource, and if the information is 0: receiving the group common PDCCH without requiring a time other than the group common PDCCH period reception;

and in the second mode, the terminal is always allowed to blindly detect the group public PDCCH and does not indicate whether the group public PDCCH is transmitted or not through the user-specific PDCCH.

As can be seen from the above, in the scheme of example two, the DMRS configuration information is transmitted by using the group common PDCCH, so that the system overhead can be reduced, and the terminal can be informed when to receive the group common PDCCH through the dedicated PDCCH, which is more intelligent.

In summary, the scheme provided by the embodiment of the present invention can correctly notify the terminal of the port number through the PDCCH when the MU-MIMO is supported at a new air interface; therefore, the problem of how to inform the terminal of the DMRS configuration information on the scheduling resources in MU-MIMO, or the total port number information, or the DMRS configuration index is solved.

An embodiment of the present invention further provides a transmission apparatus for downlink control information, which can be applied to a base station side, and as shown in fig. 7, the transmission apparatus includes:

a first sending module 71, configured to send downlink control information to the terminal through a group common physical downlink control channel;

The embodiment of the invention provides a transmission device of the downlink control information, which transmits the downlink control information to a terminal through a group common physical downlink control channel; the signaling transmission of the DMRS for channel estimation can be used when multi-stream data is sent, system resource overhead is greatly saved, and the problem that the transmission scheme of downlink control information wastes system resources in the prior art is well solved.

For the inclusion of the downlink control information, the embodiment of the present invention provides two schemes for the first sending module 71:

first, when the downlink control information includes partial information required for the terminal to receive and demodulate data, the first sending module includes: the first sending submodule is used for sending periodic information in the downlink control information to the terminal through a group common physical downlink control channel; the periodic information comprises a first average value of the total port number of the multiple input multiple output multiplexing in a first preset time period or a second average value of demodulation reference signal configuration information corresponding to the total port number; the first average value and the second average value are both average values for the number of times.

Further, the transmission device further includes: the second sending module is used for sending deviation information to the terminal through a special physical downlink control channel corresponding to the terminal; and the deviation information is the deviation information between the instantaneous information and the periodic information when the terminal schedules the resources each time.

Second, when the downlink control information includes all information required for the terminal to receive and demodulate data, the first sending module includes: and the second sending submodule is used for sending the total port number of the multiple input multiple output multiplexing in the downlink control information or demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel.

Specifically, the second sending submodule includes: a first sending unit, configured to, if the total port number is different from the total port number sent last time, or the demodulation reference signal configuration information is different from the demodulation reference signal configuration information sent last time, send the total port number or the demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel.

Further, the transmission device further includes: the first processing module is configured to carry a monitoring instruction in information that is issued last time through a dedicated physical downlink control channel before issuing the total port number or demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel, where the monitoring instruction is used to instruct the terminal to monitor the group common downlink control channel in a second preset time period.

The implementation embodiments of the method for transmitting downlink control information applied to the base station side are all applicable to the embodiment of the apparatus for transmitting downlink control information, and the same technical effects can be achieved.

As can be seen from the above, the transmission apparatus for downlink control information provided in the embodiments of the present invention well solves the problem that the transmission scheme for downlink control information wastes system resources in the prior art.

An embodiment of the present invention further provides a device for transmitting downlink control information, which can be applied to a terminal side, as shown in fig. 8, and includes:

a first receiving module 81, configured to receive downlink control information sent by a base station through a group common physical downlink control channel;

a second processing module 82, configured to receive and demodulate data according to the downlink control information;

The transmission device of the downlink control information provided by the embodiment of the invention receives the downlink control information issued by the base station through grouping the common physical downlink control channel, and receives and demodulates data according to the downlink control information, so that the occupancy rate of the special physical downlink control channel of the system is reduced, the system resource overhead is greatly saved, and the problem that the system resource is wasted by the transmission scheme of the downlink control information in the prior art is well solved.

For the containing situation of the downlink control information, the embodiment of the present invention provides two schemes for the first receiving module 81:

first, when the downlink control information includes partial information required for the terminal to receive and demodulate data, the first receiving module includes: a first receiving submodule, configured to receive, through a group common physical downlink control channel, periodic information in downlink control information sent by the base station; the periodic information comprises a first average value of the total port number of the multiple input multiple output multiplexing in a first preset time period or a second average value of demodulation reference signal configuration information corresponding to the total port number; the first average value and the second average value are both average values for the number of times.

Specifically, the first receiving sub-module includes: a first receiving unit, configured to monitor a group common physical downlink control channel according to a first preset time period, and receive periodic information in downlink control information sent by the base station; or, receiving periodic information in the downlink control information issued by the base station through a continuous blind detection group common physical downlink control channel.

Further, the transmission device further includes: a second receiving module, configured to receive, through a dedicated physical downlink control channel corresponding to the terminal, the deviation information issued by the base station; and the deviation information is the deviation information between the instantaneous information and the periodic information when the terminal schedules the resources each time.

Wherein the second receiving module comprises: the first processing submodule is used for obtaining the total port number of the MIMO multiplexing when the terminal dispatches resources each time according to the first average value and the deviation information; or obtaining demodulation reference signal configuration information corresponding to the terminal when the resource is scheduled each time according to the second average value and the deviation information; and the second processing submodule is used for receiving and demodulating data according to the total port number or the demodulation reference signal configuration information.

Second, when the downlink control information includes all information required for the terminal to receive and demodulate data, the first receiving module includes: and the second receiving submodule is used for receiving the total port number of the multiple input multiple output multiplexing in the downlink control information issued by the base station or the demodulation reference signal configuration information corresponding to the total port number through the group common physical downlink control channel.

Specifically, the second receiving sub-module includes: and a second receiving unit, configured to receive, through a persistent blind detection group common physical downlink control channel, a total number of multiple-input multiple-output multiplexed ports in downlink control information issued by a base station or demodulation reference signal configuration information corresponding to the total number of ports.

Further, the transmission device further includes: a third receiving module, configured to receive a monitoring instruction issued by the base station before receiving, through a group common physical downlink control channel, a total port number of multiple input multiple output multiplexing in downlink control information issued by the base station or demodulation reference signal configuration information corresponding to the total port number;

correspondingly, the second receiving submodule includes: and a third receiving unit, configured to monitor a common physical downlink control channel in a second preset time period according to the monitoring indication, and receive a total port number of multiple input multiple output multiplexing or demodulation reference signal configuration information corresponding to the total port number in downlink control information issued by a base station.

The implementation embodiments of the method for transmitting downlink control information applied to the terminal side are all applicable to the embodiment of the apparatus for transmitting downlink control information, and the same technical effects can be achieved.

The base station provided by the embodiment of the invention issues downlink control information to the terminal through grouping a common physical downlink control channel; the signaling transmission of the DMRS for channel estimation can be used when multi-stream data is sent, system resource overhead is greatly saved, and the problem that the transmission scheme of downlink control information wastes system resources in the prior art is well solved.

Specifically, as shown in fig. 9, the base station of the embodiment of the present invention includes:

a processor 91; and a memory 93 connected to the processor 91 through a bus interface 92, wherein the memory 93 is used for storing programs and data used by the processor 91 in executing operations, and when the processor 91 calls and executes the programs and data stored in the memory 93, the following processes are performed:

the transceiver 94 is used to send downlink control information to the terminal through the group common physical downlink control channel;

Among other things, a transceiver 94 is connected to the bus interface 92 for receiving and transmitting data under the control of the processor 91.

It should be noted that in fig. 9, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 91 and various circuits of memory represented by memory 93 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 94 may be a number of elements including a transmitter and a transceiver providing a means for communicating with various other apparatus over a transmission medium. The processor 91 is responsible for managing the bus architecture and general processing, and the memory 93 may store data used by the processor 91 in performing operations.

Those skilled in the art will appreciate that all or part of the steps for implementing the above embodiments may be performed by hardware, or may be instructed to be performed by associated hardware by a computer program that includes instructions for performing some or all of the steps of the above methods; and the computer program may be stored in a readable storage medium, which may be any form of storage medium.

When the downlink control information includes partial information required by the terminal to receive and demodulate data, the processor implements the following steps when executing the program: sending periodic information in the downlink control information to the terminal through a group common physical downlink control channel; the periodic information comprises a first average value of the total port number of the multiple input multiple output multiplexing in a first preset time period or a second average value of demodulation reference signal configuration information corresponding to the total port number; the first average value and the second average value are both average values for the number of times.

Further, the processor executes the program to further implement the following steps: issuing deviation information to the terminal through a special physical downlink control channel corresponding to the terminal; and the deviation information is the deviation information between the instantaneous information and the periodic information when the terminal schedules the resources each time.

When the downlink control information includes all information required by the terminal to receive and demodulate data, the processor implements the following steps when executing the program: and issuing the total port number of the multiple input multiple output multiplexing in the downlink control information or demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel.

Specifically, the processor implements the following steps when executing the program: and if the total port number is different from the total port number sent last time, or the demodulation reference signal configuration information is different from the demodulation reference signal configuration information sent last time, issuing the total port number or the demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel.

Further, the processor executes the program to further implement the following steps: carrying a monitoring instruction in information issued by a dedicated physical downlink control channel last time before issuing the total port number or demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel, wherein the monitoring instruction is used for instructing the terminal to monitor the group common downlink control channel in a second preset time period.

The implementation embodiments of the method for transmitting downlink control information at the base station side are all applicable to the embodiment of the base station, and the same technical effects can be achieved.

receiving and demodulating data according to the downlink control information;

The terminal provided by the embodiment of the invention receives the downlink control information issued by the base station through grouping the common physical downlink control channel, and receives and demodulates data according to the downlink control information, so that the occupancy rate of the special physical downlink control channel of the system is reduced, a large amount of system resource overhead is saved, and the problem that the transmission scheme of the downlink control information wastes system resources in the prior art is well solved.

As shown in fig. 10, the terminal provided in the embodiment of the present invention includes:

a processor 101; and a memory 103 connected to the processor 101 through a bus interface 102, wherein the memory 103 is used for storing programs and data used by the processor 101 in executing operations, and when the processor 101 calls and executes the programs and data stored in the memory 103, the following processes are executed:

receiving downlink control information issued by a base station through a group common physical downlink control channel by using a transceiver 104;

receiving and demodulating data according to the downlink control information;

Among other things, the transceiver 104 is connected to the bus interface 102 for receiving and transmitting data under the control of the processor 101.

It should be noted that in fig. 10, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 101 and various circuits of memory represented by memory 103 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 104 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. For different terminals, the user interface 105 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 101 is responsible for managing the bus architecture and general processing, and the memory 103 may store data used by the processor 101 in performing operations.

When the downlink control information includes partial information required by the terminal to receive and demodulate data, the processor implements the following steps when executing the program: receiving periodic information in downlink control information issued by the base station through a group common physical downlink control channel; the periodic information includes a first average value of a total port number of multiple input multiple output multiplexing within a first preset time period or a second average value of demodulation reference signal configuration information corresponding to the total port number, where the first average value and the second average value are both average values for times.

Specifically, the processor implements the following steps when executing the program: monitoring a group common physical downlink control channel according to a first preset time period, and receiving periodic information in downlink control information issued by the base station; or, receiving periodic information in the downlink control information issued by the base station through a continuous blind detection group common physical downlink control channel.

Further, the processor executes the program to further implement the following steps: receiving the deviation information issued by the base station through a special physical downlink control channel corresponding to the terminal; and the deviation information is the deviation information between the instantaneous information and the periodic information when the terminal schedules the resources each time.

Specifically, the processor implements the following steps when executing the program: obtaining the total port number of the MIMO multiplexing when the terminal dispatches the resource each time according to the first average value and the deviation information; or obtaining demodulation reference signal configuration information corresponding to the terminal when the resource is scheduled each time according to the second average value and the deviation information; and receiving and demodulating data according to the total port number or the demodulation reference signal configuration information.

When the downlink control information includes all information required by the terminal to receive and demodulate data, the processor implements the following steps when executing the program: receiving the total port number of the multiple input multiple output multiplexing or the demodulation reference signal configuration information corresponding to the total port number in the downlink control information issued by the base station through grouping the public physical downlink control channel.

Specifically, the processor implements the following steps when executing the program: receiving the total port number of the multiple input multiple output multiplexing or the demodulation reference signal configuration information corresponding to the total port number in the downlink control information issued by the base station through the continuous blind detection group public physical downlink control channel.

Further, the processor executes the program to further implement the following steps: receiving a monitoring indication sent by a base station before receiving the total port number of multiple input multiple output multiplexing or demodulation reference signal configuration information corresponding to the total port number in downlink control information sent by the base station through a group common physical downlink control channel;

The implementation embodiments of the method for transmitting downlink control information at the terminal side are all applicable to the embodiment of the terminal, and the same technical effect can be achieved.

The computer-readable storage medium provided by the embodiment of the present invention stores the following programs: transmitting downlink control information to the terminal through a group common physical downlink control channel; the signaling transmission of the DMRS for channel estimation can be realized when multi-stream data is sent, system resource overhead is greatly saved, and the problem that the transmission scheme of downlink control information wastes system resources in the prior art can be solved.

When the downlink control information includes partial information required by the terminal to receive and demodulate data, the program is executed by a processor to implement the following steps:

sending periodic information in the downlink control information to the terminal through a group common physical downlink control channel; the periodic information comprises a first average value of the total port number of the multiple input multiple output multiplexing in a first preset time period or a second average value of demodulation reference signal configuration information corresponding to the total port number; the first average value and the second average value are both average values for the number of times.

The program when executed by the processor further implements the steps of: issuing deviation information to the terminal through a special physical downlink control channel corresponding to the terminal; and the deviation information is the deviation information between the instantaneous information and the periodic information when the terminal schedules the resources each time.

When the downlink control information includes all information required by the terminal to receive and demodulate data, the program is executed by a processor to realize the following steps: and issuing the total port number of the multiple input multiple output multiplexing in the downlink control information or demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel.

Specifically, the program realizes the following steps when being executed by a processor: and if the total port number is different from the total port number sent last time, or the demodulation reference signal configuration information is different from the demodulation reference signal configuration information sent last time, issuing the total port number or the demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel.

The program when executed by the processor further implements the steps of: carrying a monitoring instruction in information issued by a dedicated physical downlink control channel last time before issuing the total port number or demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel, wherein the monitoring instruction is used for instructing the terminal to monitor the group common downlink control channel in a second preset time period.

The implementation embodiments of the method for transmitting downlink control information at the base station side are all applicable to the embodiment of the computer-readable storage medium, and the same technical effect can be achieved.

receiving and demodulating data according to the downlink control information;

The computer-readable storage medium provided by the embodiment of the present invention stores the following programs: the method comprises the steps of receiving downlink control information issued by a base station through a group of public physical downlink control channels, receiving and demodulating data according to the downlink control information, reducing the occupancy rate of a special physical downlink control channel of the system, greatly saving system resource overhead, and solving the problem that the transmission scheme of the downlink control information wastes system resources in the prior art.

When the downlink control information includes partial information required by the terminal to receive and demodulate data, the program is executed by the processor to implement the following steps: receiving periodic information in downlink control information issued by the base station through a group common physical downlink control channel; the periodic information comprises a first average value of the total port number of the multiple input multiple output multiplexing in a first preset time period or a second average value of demodulation reference signal configuration information corresponding to the total port number; the first average value and the second average value are both average values for the number of times.

Specifically, the program realizes the following steps when being executed by a processor: monitoring a group common physical downlink control channel according to a first preset time period, and receiving periodic information in downlink control information issued by the base station; or, receiving periodic information in the downlink control information issued by the base station through a continuous blind detection group common physical downlink control channel.

The program when executed by the processor further implements the steps of: receiving the deviation information issued by the base station through a special physical downlink control channel corresponding to the terminal; and the deviation information is the deviation information between the instantaneous information and the periodic information when the terminal schedules the resources each time.

Specifically, the program realizes the following steps when being executed by a processor: obtaining the total port number of the MIMO multiplexing when the terminal dispatches the resource each time according to the first average value and the deviation information; or obtaining demodulation reference signal configuration information corresponding to the terminal when the resource is scheduled each time according to the second average value and the deviation information; and receiving and demodulating data according to the total port number or the demodulation reference signal configuration information.

When the downlink control information includes all information required by the terminal to receive and demodulate data, the program is executed by the processor to realize the following steps: receiving the total port number of the multiple input multiple output multiplexing or the demodulation reference signal configuration information corresponding to the total port number in the downlink control information issued by the base station through grouping the public physical downlink control channel.

Specifically, the program realizes the following steps when being executed by a processor: receiving the total port number of the multiple input multiple output multiplexing or the demodulation reference signal configuration information corresponding to the total port number in the downlink control information issued by the base station through the continuous blind detection group public physical downlink control channel.

Further, the program when executed by the processor further performs the steps of: receiving a monitoring indication sent by a base station before receiving the total port number of multiple input multiple output multiplexing or demodulation reference signal configuration information corresponding to the total port number in downlink control information sent by the base station through a group common physical downlink control channel;

The implementation embodiments of the method for transmitting downlink control information at the terminal side are all applicable to the embodiment of the computer-readable storage medium, and the same technical effects can be achieved.

It should be noted that many of the functional components described in this specification are referred to as modules/sub-modules in order to more particularly emphasize their implementation independence.

In embodiments of the invention, the modules/sub-modules may be implemented in software for execution by various types of processors. An identified module of executable code may, for instance, comprise one or more physical or logical blocks of computer instructions which may, for instance, be constructed as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may comprise disparate instructions stored in different bits which, when joined logically together, comprise the module and achieve the stated purpose for the module.

Indeed, a module of executable code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices. Likewise, operational data may be identified within the modules and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different storage devices, and may exist, at least partially, merely as electronic signals on a system or network.

When a module can be implemented by software, considering the level of existing hardware technology, a module implemented by software may build a corresponding hardware circuit to implement a corresponding function, without considering cost, and the hardware circuit may include a conventional Very Large Scale Integration (VLSI) circuit or a gate array and an existing semiconductor such as a logic chip, a transistor, or other discrete components. A module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.

While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.

Claims

1. A method for transmitting downlink control information is characterized by comprising the following steps:

the downlink control information comprises part or all information required by the terminal for receiving and demodulating data;

when the downlink control information includes partial information required by the terminal to receive and demodulate data, the step of issuing the downlink control information to the terminal through the group common physical downlink control channel includes:

the first average value and the second average value are average values for times;

the transmission method further comprises:

2. The transmission method according to claim 1, wherein when the downlink control information includes all information required for the terminal to receive and demodulate data, the step of issuing the downlink control information to the terminal through the group common physical downlink control channel includes:

3. The transmission method according to claim 2, wherein the step of issuing, to the terminal, a total number of ports of the mimo multiplexing in the downlink control information or demodulation reference signal configuration information corresponding to the total number of ports through a group common physical downlink control channel includes:

4. The transmission method according to claim 3, wherein before issuing the total port number or the demodulation reference signal configuration information corresponding to the total port number to the terminal through a group common physical downlink control channel, the transmission method further includes:

5. A method for transmitting downlink control information is characterized by comprising the following steps:

receiving and demodulating data according to the downlink control information;

when the downlink control information includes partial information required by the terminal to receive and demodulate data, the step of receiving the downlink control information issued by the base station through the group common physical downlink control channel includes:

the transmission method further comprises:

6. The transmission method according to claim 5, wherein the step of receiving the periodic information in the downlink control information sent by the base station through the group common physical downlink control channel comprises:

7. The transmission method according to claim 5, wherein the step of receiving and demodulating data according to the downlink control information comprises:

8. The transmission method according to claim 5, wherein when the downlink control information includes all information required for the terminal to receive and demodulate data, the step of receiving the downlink control information transmitted by the base station through the group common physical downlink control channel includes:

9. The transmission method according to claim 8, wherein the step of receiving, through the group common physical downlink control channel, a total number of ports for mimo multiplexing or demodulation reference signal configuration information corresponding to the total number of ports in downlink control information sent by a base station comprises:

10. The transmission method according to claim 8, wherein before receiving, through a group common physical downlink control channel, a total number of ports for mimo multiplexing or demodulation reference signal configuration information corresponding to the total number of ports in downlink control information sent by a base station, the transmission method further comprises:

receiving a monitoring indication issued by a base station;

11. A device for transmitting downlink control information, comprising:

when the downlink control information includes partial information required by the terminal to receive and demodulate data, the first sending module includes:

the transmission device further includes:

12. The transmission apparatus according to claim 11, wherein when the downlink control information includes all information required for the terminal to receive and demodulate data, the first sending module includes:

13. The transmission apparatus of claim 12, wherein the second sending submodule comprises:

14. The transmission apparatus of claim 13, further comprising:

15. A device for transmitting downlink control information, comprising:

when the downlink control information includes partial information required by the terminal to receive and demodulate data, the first receiving module includes:

the transmission device further includes:

16. The transmission apparatus of claim 15, wherein the first receiving submodule comprises:

17. The transmission apparatus of claim 15, wherein the second receiving module comprises:

18. The transmission apparatus according to claim 15, wherein when the downlink control information includes all information required for the terminal to receive and demodulate data, the first receiving module includes:

19. The transmission apparatus of claim 18, wherein the second receiving submodule comprises:

20. The transmission apparatus of claim 18, further comprising:

the second receiving submodule includes:

21. A base station comprising a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; wherein the processor implements the following steps when executing the program:

when the downlink control information includes partial information required by the terminal to receive and demodulate data, the processor implements the following steps when executing the program:

the periodic information comprises a first average value of the total port number of the multiple input multiple output multiplexing in a first preset time period or a second average value of demodulation reference signal configuration information corresponding to the total port number; the first average value and the second average value are average values for times;

the processor, when executing the program, further implements the steps of:

22. A terminal comprising a memory, a processor, a transceiver, and a computer program stored on the memory and executable on the processor; wherein the processor implements the following steps when executing the program:

receiving and demodulating data according to the downlink control information;

the periodic information comprises a first average value of the total port number of the multiple input multiple output multiplexing in a first preset time period or a second average value of demodulation reference signal configuration information corresponding to the total port number, wherein the first average value and the second average value are average values aiming at times;

the processor, when executing the program, further implements the steps of:

23. A computer-readable storage medium, on which a computer program is stored, which program, when executed by a processor, carries out the steps of:

when the downlink control information includes partial information required by the terminal to receive and demodulate data, the program realizes the following steps when being executed by a processor:

the program when executed by the processor further implements the steps of:

24. A computer-readable storage medium, on which a computer program is stored, which program, when executed by a processor, carries out the steps of:

receiving and demodulating data according to the downlink control information;

the program when executed by the processor further implements the steps of: