CN106304349B

CN106304349B - Data transmission method and device

Info

Publication number: CN106304349B
Application number: CN201510268906.6A
Authority: CN
Inventors: 李卫敏; 李儒岳; 袁志锋; 徐俊; 唐红
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-05-22
Filing date: 2015-05-22
Publication date: 2021-05-11
Anticipated expiration: 2035-05-22
Also published as: WO2016188195A1; CN106304349A

Abstract

A data transmission method and apparatus; the method comprises the following steps: acquiring multi-user transmission configuration information corresponding to the specified time-frequency resource; the multi-user transmission configuration information corresponding to the specified time frequency resource comprises: configuring information for performing multi-user transmission on the specified time-frequency resource by a plurality of terminals with different service requirements or service types; and performing data transmission on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource. The invention can combine the service requirements and characteristics of a plurality of terminals to implement multi-user transmission, thereby achieving the purpose of effectively improving the throughput and the system capacity of the terminals.

Description

Data transmission method and device

Technical Field

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

Background

The multi-user information transmission technology can be classified into OMA (Orthogonal Multiple Access) and NOMA (non-Orthogonal Multiple Access) according to an Access mode. In OMA technology, multiple users use mutually orthogonal communication resources to transmit information, and in NOMA technology, multiple users can transmit information on the same communication resources or non-orthogonal communication resources. The communication resources may be frequency domain communication resources (e.g., carriers), time domain communication resources (e.g., slots), time-frequency domain communication resources (e.g., time-frequency resource blocks), code domain communication resources (e.g., spreading codes), space domain communication resources (e.g., beams), and so on.

The multiple-User information Transmission technology based on the NOMA scheme may also be referred to as a Multi-User Superposition Transmission (MUST), that is, information of multiple users is transmitted after being subjected to Superposition processing on the same communication resource or non-orthogonal communication resources, where the Superposition processing may be direct Superposition of information of multiple users, or may be Superposition of information of multiple users after being subjected to certain processing, such as power control, precoding processing, or spreading processing.

Since the information of multiple users is related to Interference during multi-user superposition transmission, the receiver needs to employ a multi-user detection technique to suppress or eliminate the Interference between multiple users, and separate the information of each user, such as a Successive Interference Cancellation (SIC) technique.

Relevant research proves that when a plurality of terminals with obviously different channel qualities perform superposition transmission based on the NOMA mode, the system capacity can be larger compared with the multi-user information transmission based on the OMA mode, and the terminal with better channel quality still has higher throughput while the throughput of the terminal with poorer channel quality is improved. However, when performing multi-user information transmission based on the OMA method, if a high system capacity is to be ensured or a high throughput of a terminal with a better channel quality is to be ensured, the throughput of the terminal with a poorer channel quality cannot be effectively improved, or if the throughput of the terminal with a poorer channel quality is to be improved, the high throughput and the high system capacity of the terminal with a better channel quality cannot be effectively ensured. Therefore, the multi-user superposition transmission based on the NOMA mode can be used for effectively improving the throughput and the system capacity of the terminal.

The present invention is not limited to the development degree of the technology, the complexity of the receiver and the device cost, and the NOMA-based multi-user superposition transmission is not applied to the actual communication system, however, with the rapid development of the technology, the hardware processing capability is significantly improved, the device cost is also significantly reduced, and the multi-user non-orthogonal superposition transmission technology applied to the actual communication system is considered again. Currently, Release 13 version of an LTE (Long Term Evolution) communication system is evaluating feasibility of a multi-user superposition transmission technology, and evaluation contents include a deployment scenario, performance evaluation, a multi-user superposition transmission scheme, and the like.

Since various types of communication services exist in an actual communication system (e.g., an LTE system), such as FTP (File Transfer Protocol) service, VoIP (Voice over Internet Protocol), packet service, etc., these communication services have different requirements and characteristics, for example, the FTP service may be dynamically scheduled and link adaptive scheduling, the VoIP service has smaller data packets and is transmitted at a semi-persistent scheduling and a fixed rate, and the packet service may also be transmitted at a fixed rate. However, the current solution does not consider how to combine the service requirements and characteristics of the terminal when applying the multi-user superposition transmission technique in the actual communication system.

In addition, the MIMO (Multiple-Input Multiple-Output) transmission technology is a key technology for improving system capacity and spectral efficiency in the prior art, and includes transmission modes such as SU-MIMO (Single-User MIMO ) and MU-MIMO (Multiple-User MIMO). The current scheme does not consider how to apply the multi-user superposition transmission technology based on the MIMO transmission technology in combination with the service requirements and characteristics of the terminal.

Disclosure of Invention

The invention provides a data transmission method and a data transmission device, which can combine the service requirements and characteristics of a plurality of terminals to implement multi-user transmission, thereby achieving the purpose of effectively improving the throughput and the system capacity of the terminals.

In order to solve the problems, the following technical scheme is adopted:

a method of data transmission, comprising:

acquiring multi-user transmission configuration information corresponding to the specified time-frequency resource; the multi-user transmission configuration information corresponding to the specified time frequency resource comprises: configuring information for performing multi-user transmission on the specified time-frequency resource by a plurality of terminals with different service requirements or service types;

and performing data transmission on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource.

Optionally, the multi-user transmission comprises:

multi-user superposition transmission, and/or multi-user multiple-input multiple-output transmission.

Optionally, the multi-user transmission configuration information includes any one or any several of the following:

multi-user transmission configuration information corresponding to the plurality of resource blocks respectively;

transmitting configuration information of multiple users corresponding to the multiple resource block groups respectively;

multi-user transmission configuration information corresponding to the entire transmission bandwidth.

multi-user transmission configuration information corresponding to one subframe;

multi-user transmission configuration information corresponding to the plurality of subframes, respectively;

multi-user transmission configuration information corresponding to the plurality of subframe groups, respectively;

transmitting configuration information of multiple users corresponding to a wireless frame;

and transmitting configuration information of multiple users corresponding to the multiple radio frames respectively.

Optionally, the configuration information includes at least one of:

power control information;

transport layer indication information;

modulating coding mode information;

code sequence information.

Optionally, the power control information includes any one or any several of the following:

power distribution proportion information, power distribution parameter information, power control parameter information, and power adjustment parameter information.

Optionally, the transport layer indication information includes:

transmission layer number information, and/or multi-user transmission layer information.

Optionally, the code sequence information includes:

spreading code information, and/or precoding information.

Optionally, the specified time-frequency resource is a time-frequency resource for data transmission determined according to system scheduling information.

Optionally, before the obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource, the method further includes:

receiving multi-user transmission configuration information.

multi-user transmission configuration information is determined.

Optionally, the determining the multi-user transmission configuration information further includes:

and sending the multi-user transmission configuration information.

Optionally, the sending the multi-user transmission configuration information includes at least one of:

transmitting the multi-user transmission configuration information through broadcast signaling;

transmitting the multi-user transmission configuration information through multicast signaling;

transmitting the multi-user transmission configuration information through Radio Resource Control (RRC) signaling;

and sending the multi-user transmission configuration information through Downlink Control Information (DCI).

Optionally, the radio resource control RRC signaling includes semi-persistent scheduling configuration signaling.

Optionally, the obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource includes:

acquiring multi-user transmission configuration information corresponding to the specified time-frequency resource from the received multi-user transmission configuration information; and/or the presence of a gas in the gas,

and acquiring multi-user transmission configuration information corresponding to the specified time-frequency resource from the determined multi-user transmission configuration information.

Optionally, the obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource from the received multi-user transmission configuration information includes any one or more of the following manners:

acquiring multi-user transmission configuration information corresponding to the specified time-frequency resource from multi-user transmission configuration information carried in the received broadcast signaling;

acquiring multi-user transmission configuration information corresponding to the specified time-frequency resource from multi-user transmission configuration information carried in the received multicast signaling;

acquiring multi-user transmission configuration information corresponding to the specified time frequency resource from multi-user transmission configuration information carried in the received RRC signaling;

acquiring multi-user transmission configuration information corresponding to the specified time frequency resource from the multi-user transmission configuration information carried in the received DCI signaling;

and acquiring the multi-user transmission configuration information corresponding to the specified time-frequency resource from the multi-user transmission configuration information carried in the received RRC signaling and the multi-user transmission configuration indication information carried in the received DCI signaling.

Optionally, the obtaining of the multi-user transmission configuration information corresponding to the specified time-frequency resource from the determined multi-user transmission configuration information includes at least one of:

acquiring multi-user transmission configuration information corresponding to the specified time-frequency resource from the determined multi-user transmission configuration information according to the system scheduling information;

and acquiring multi-user transmission configuration information corresponding to the specified time frequency resource from the determined multi-user transmission configuration information according to a preset rule of the system.

Optionally, the data transmission on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource includes at least one of:

receiving data on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource;

and sending data on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource.

Optionally, the receiving data on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource includes at least one of:

receiving data sent by a base station on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource;

and receiving data sent by a plurality of terminals with different service requirements or service types on the appointed time-frequency resource according to the multi-user transmission configuration information corresponding to the appointed time-frequency resource.

Optionally, the sending data on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource includes at least one of:

sending out the data of a plurality of terminals with different service requirements or service types after overlapping the data on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource;

according to the multi-user transmission configuration information corresponding to the appointed time frequency resource, carrying out spatial multiplexing on data of a plurality of terminals with different service requirements or service types on the appointed time frequency resource and then sending out the data;

according to the multi-user transmission configuration information corresponding to the specified time frequency resource, carrying out spatial multiplexing on data to be sent on the specified time frequency resource and then sending out the data;

and sending data to be sent out on the specified time frequency resource according to the multi-user transmission configuration information corresponding to the specified time frequency resource.

A data transmission apparatus comprising:

an obtaining module, configured to obtain multi-user transmission configuration information corresponding to a specified time-frequency resource; the multi-user transmission configuration information corresponding to the specified time frequency resource comprises: configuring information for performing multi-user transmission on the specified time-frequency resource by a plurality of terminals with different service requirements or service types;

and the transmission module is used for carrying out data transmission on the appointed time-frequency resource according to the multi-user transmission configuration information corresponding to the appointed time-frequency resource.

Optionally, the multi-user transmission comprises:

Optionally, the configuration information includes at least one of:

power control information;

transport layer indication information;

modulating coding mode information;

code sequence information.

Optionally, the transport layer indication information includes:

Optionally, the code sequence information includes:

spreading code information, and/or precoding information.

Optionally, the obtaining module is further configured to receive the multi-user transmission configuration information before obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource.

Optionally, the obtaining module is further configured to determine the multi-user transmission configuration information before obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource.

Optionally, the obtaining module is further configured to send the multi-user transmission configuration information after determining the multi-user transmission configuration information.

Optionally, the obtaining module sends the multi-user transmission configuration information, where the obtaining module includes at least one of:

Optionally, the obtaining, by the obtaining module, the multi-user transmission configuration information corresponding to the specified time-frequency resource means:

the acquisition module acquires multi-user transmission configuration information corresponding to the specified time-frequency resource from the received multi-user transmission configuration information; and/or acquiring multi-user transmission configuration information corresponding to the specified time frequency resource from the determined multi-user transmission configuration information.

Optionally, the obtaining, by the obtaining module, multi-user transmission configuration information corresponding to the specified time-frequency resource from the received multi-user transmission configuration information includes any one of the following manners or any several manners:

the acquisition module acquires multi-user transmission configuration information corresponding to the specified time-frequency resource from multi-user transmission configuration information carried in the received broadcast signaling;

the acquisition module acquires multi-user transmission configuration information corresponding to the specified time-frequency resource from the multi-user transmission configuration information carried in the received multicast signaling;

the acquisition module acquires multi-user transmission configuration information corresponding to the specified time-frequency resource from multi-user transmission configuration information carried in the received RRC signaling;

the obtaining module obtains multi-user transmission configuration information corresponding to the appointed time frequency resource from the multi-user transmission configuration information carried in the received DCI signaling;

the obtaining module obtains the multi-user transmission configuration information corresponding to the specified time-frequency resource from the multi-user transmission configuration information carried in the received RRC signaling and the multi-user transmission configuration indication information carried in the received DCI signaling.

Optionally, the obtaining module obtains the multi-user transmission configuration information corresponding to the specified time-frequency resource from the determined multi-user transmission configuration information, where the obtaining module includes at least one of:

the acquisition module acquires multi-user transmission configuration information corresponding to the specified time-frequency resource from the determined multi-user transmission configuration information according to the system scheduling information;

the acquisition module acquires multi-user transmission configuration information corresponding to the specified time-frequency resource from the determined multi-user transmission configuration information according to a preset rule of the system.

Optionally, the transmission module performs data transmission on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource, where the data transmission includes at least one of:

the transmission module receives data on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource;

and the transmission module transmits data on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource.

Optionally, the transmitting module receives data on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource, where the receiving includes at least one of:

the transmission module receives data sent by a base station on the appointed time-frequency resource according to the multi-user transmission configuration information corresponding to the appointed time-frequency resource;

and the transmission module receives data sent by a plurality of terminals with different service requirements or service types on the appointed time-frequency resource according to the multi-user transmission configuration information corresponding to the appointed time-frequency resource.

Optionally, the transmitting module sends data on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource, where the data includes at least one of:

the transmission module superposes data of a plurality of terminals with different service requirements or service types on the appointed time-frequency resource according to the multi-user transmission configuration information corresponding to the appointed time-frequency resource and then sends the superposed data;

the transmission module performs spatial multiplexing on data of a plurality of terminals with different service requirements or service types on the designated time-frequency resource according to the multi-user transmission configuration information corresponding to the designated time-frequency resource and then sends the data out;

the transmission module performs spatial multiplexing on data to be transmitted on the specified time frequency resource according to the multi-user transmission configuration information corresponding to the specified time frequency resource and then transmits the data to be transmitted;

and the transmission module sends data to be sent out on the specified time frequency resource according to the multi-user transmission configuration information corresponding to the specified time frequency resource.

In the scheme of the invention, the data transmission of a plurality of terminals with different service requirements or service types is realized on the appointed time frequency resource by acquiring the multi-user transmission configuration information corresponding to the appointed time frequency resource and according to the multi-user transmission configuration information, wherein the multi-user transmission configuration information corresponding to the appointed time frequency resource comprises the configuration information of multi-user transmission of the plurality of terminals with different service requirements or service types on the appointed time frequency resource. Therefore, the scheme of the invention can be used for combining the service requirements and characteristics of a plurality of terminals to implement multi-user transmission, thereby achieving the aim of effectively improving the throughput and the system capacity of the terminals.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a flowchart of a data transmission method according to an embodiment of the present invention;

fig. 2 is a flowchart of a data transmission method according to an embodiment of the present invention;

fig. 3 is a flowchart of a data transmission method according to a second embodiment of the present invention;

fig. 4 is a flowchart of a data transmission method according to a third embodiment of the present invention;

fig. 5 is a flowchart of a data transmission method according to a fourth embodiment of the present invention;

fig. 6 is a schematic diagram of downlink multi-user superposition transmission and multi-user transmission configuration information in an application example of the present invention;

fig. 7 is a diagram illustrating downlink multi-user superposition transmission and multi-user transmission configuration information in application example two of the present invention;

fig. 8 is a schematic diagram of downlink multi-user superposition transmission and multi-user transmission configuration information in an application example three of the present invention;

fig. 9 is a schematic diagram of downlink multi-user superposition transmission and multi-user transmission configuration information in a fourth application example of the present invention;

fig. 10 is a schematic diagram of multi-user transmission configuration information and downlink multi-user superposition transmission in an application example five of the present invention;

fig. 11 is a diagram illustrating multi-user transmission configuration information and uplink multi-user transmission in a sixth exemplary application of the present invention;

fig. 12 is a diagram of uplink multi-user transmission in the seventh application example of the present invention;

fig. 13 is a schematic diagram of a data transmission apparatus according to an embodiment of the invention.

Detailed Description

The technical solution of the present invention will be described in more detail with reference to the accompanying drawings and examples.

It should be noted that, if not conflicting, the embodiments of the present invention and the features of the embodiments may be combined with each other within the scope of protection of the present invention. Additionally, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.

The data transmission method provided by the embodiment of the present invention may be applied to a terminal and/or a base station, as shown in fig. 1, and the method includes:

step 101: acquiring multi-user transmission configuration information corresponding to the specified time-frequency resource; the multi-user transmission configuration information corresponding to the specified time frequency resource comprises: configuring information for performing multi-user transmission on the specified time-frequency resource by a plurality of terminals with different service requirements or service types;

step 102: and performing data transmission on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource.

Optionally, the multi-user transmission comprises: multi-user superposition transmission, and/or multi-user MIMO transmission.

Optionally, the multi-user transmission configuration information may include, but is not limited to, any one or any several of the following:

Optionally, the configuration information may include, but is not limited to, at least one of:

power control information;

transport layer indication information;

modulating coding mode information;

code sequence information.

Wherein, the power control information may include, but is not limited to, any one or any several of the following: power distribution proportion information, power distribution parameter information, power control parameter information, and power adjustment parameter information.

Wherein the transport layer indication information includes: transmission layer number information, and/or multi-user transmission layer information. The information of the number of transmission layers is used for indicating the number of transmission layers, and the information of the multi-user transmission layers is used for indicating which transmission layer the multi-user transmission is performed on.

Wherein the code sequence information comprises: spreading code information, and/or precoding information.

Optionally, the specified time-frequency resource may be, but is not limited to, a time-frequency resource for data transmission determined according to system scheduling information.

The system scheduling information may include, but is not limited to, any one or any several of the following: downlink scheduling information, uplink scheduling information, semi-persistent scheduling information, scheduling information of system fixed configuration, and the like.

Optionally, before executing step 101, step 103 may be further included: receiving multi-user transmission configuration information.

Optionally, before executing step 101, step 104 may be further included: multi-user transmission configuration information is determined.

Optionally, after the step 104 is executed, the method may further include the step 105: and sending the multi-user transmission configuration information.

Wherein the sending the multi-user transmission configuration information may include, but is not limited to, at least one of:

Wherein the radio resource control RRC signaling may include, but is not limited to, semi-persistent scheduling configuration signaling.

Optionally, in step 101, the obtaining of the multi-user transmission configuration information corresponding to the specified time-frequency resource may include, but is not limited to:

The obtaining of the multi-user transmission configuration information corresponding to the specified time-frequency resource from the received multi-user transmission configuration information may include, but is not limited to, any one or any several of the following manners:

The obtaining of the multi-user transmission configuration information corresponding to the specified time-frequency resource from the determined multi-user transmission configuration information may include, but is not limited to, at least one of:

Optionally, in step 102, data transmission on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource may include, but is not limited to, at least one of:

Wherein, the receiving data on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource may include, but is not limited to, at least one of the following:

Wherein, the sending data on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource may include, but is not limited to, at least one of the following:

The following four embodiments are used to illustrate the specific implementation flow of the data transmission method according to the embodiment of the present invention applied in different situations.

Example one

The data transmission method provided in this embodiment may be applied to a terminal, and is used for receiving downlink data, as shown in fig. 2, the method includes:

step 201: acquiring multi-user transmission configuration information corresponding to the specified time-frequency resource; the multi-user transmission configuration information corresponding to the specified time frequency resource comprises: configuring information for performing multi-user transmission on the specified time-frequency resource by a plurality of terminals with different service requirements or service types;

step 202: and performing data transmission on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource.

power control information;

transport layer indication information;

modulating coding mode information;

code sequence information.

Wherein the power control information may include, but is not limited to: power allocation ratio information, and/or power allocation parameter information.

The system scheduling information may include, but is not limited to, any one or any several of the following: downlink scheduling information, semi-persistent scheduling information, scheduling information fixedly configured by the system, and the like.

Optionally, before executing step 201, the method further includes step 203: receiving multi-user transmission configuration information. The multi-user transmission configuration information may be received from a base station, but is not limited to this, and may also be received from other devices or approaches.

Accordingly, in step 201, obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource may include, but is not limited to:

and acquiring multi-user transmission configuration information corresponding to the specified time frequency resource from the received multi-user transmission configuration information.

Wherein the RRC signaling may include, but is not limited to, semi-persistent scheduling configuration signaling.

Optionally, in step 202, the data transmission on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource may include, but is not limited to:

and receiving data on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource.

The receiving data on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource may include, but is not limited to:

and receiving data sent by the base station on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource.

Example two

The data transmission method provided in this embodiment may be applied to a terminal, and is used for sending uplink data, as shown in fig. 3, the method includes:

step 301: acquiring multi-user transmission configuration information corresponding to the specified time-frequency resource; the multi-user transmission configuration information corresponding to the specified time frequency resource comprises: configuring information for performing multi-user transmission on the specified time-frequency resource by a plurality of terminals with different service requirements or service types;

step 302: and performing data transmission on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource.

power control information;

transport layer indication information;

modulating coding mode information;

code sequence information.

Wherein the power control information may include, but is not limited to: power control parameter information, and/or power adjustment parameter information.

The system scheduling information may include, but is not limited to, any one or any several of the following: uplink scheduling information, semi-persistent scheduling information, scheduling information fixedly configured by the system, and the like.

Optionally, before executing step 301, step 303 is further included: receiving multi-user transmission configuration information.

Optionally, before executing step 301, step 304 is further included: multi-user transmission configuration information is determined.

Optionally, in step 301, the obtaining of the multi-user transmission configuration information corresponding to the specified time-frequency resource may include, but is not limited to:

Optionally, in step 302, the data transmission on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource may include, but is not limited to:

EXAMPLE III

The data transmission method provided in this embodiment may be applied to a base station, and is used for sending downlink data, as shown in fig. 4, the method includes:

step 401: acquiring multi-user transmission configuration information corresponding to the specified time-frequency resource; the multi-user transmission configuration information corresponding to the specified time frequency resource comprises: configuring information for performing multi-user transmission on the specified time-frequency resource by a plurality of terminals with different service requirements or service types;

step 402: and performing data transmission on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource.

power control information;

transport layer indication information;

modulating coding mode information;

code sequence information.

Optionally, before executing step 401, step 403 is further included: multi-user transmission configuration information is determined.

Optionally, after step 403 is executed, step 404 is further included: and sending the multi-user transmission configuration information.

transmitting the multi-user transmission configuration information through RRC signaling;

and sending the multi-user transmission configuration information through DCI.

Optionally, in step 401, the obtaining of the multi-user transmission configuration information corresponding to the specified time-frequency resource may include, but is not limited to:

Optionally, in step 402, the data transmission on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource may include, but is not limited to:

Example four

The data transmission method provided in this embodiment may be applied to a base station, and is used for receiving uplink data, as shown in fig. 5, the method includes:

step 501: acquiring multi-user transmission configuration information corresponding to the specified time-frequency resource; the multi-user transmission configuration information corresponding to the specified time frequency resource comprises: configuring information for performing multi-user transmission on the specified time-frequency resource by a plurality of terminals with different service requirements or service types;

step 502: and performing data transmission on the appointed time frequency resource according to the multi-user transmission configuration information corresponding to the appointed time frequency resource.

power control information;

transport layer indication information;

modulating coding mode information;

code sequence information.

Optionally, before executing step 501, the method further includes step 503: multi-user transmission configuration information is determined.

Optionally, in step 501, the obtaining of the multi-user transmission configuration information corresponding to the specified time-frequency resource may include, but is not limited to:

Optionally, in step 502, data transmission is performed on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource, which may include, but is not limited to:

The following describes embodiments of the present invention in detail with reference to specific application examples.

Application example 1

The data transmission method provided by the present example is used for downlink multi-user superposition transmission.

As shown in fig. 6, the base station performs superposition transmission on data of multiple terminals with different service requirements or service types on a specified time-frequency resource; data of the terminal UE1, UE2, and UE3 is a VoIP service with a small data packet and is transmitted according to a low-rate fixed Modulation and Coding Scheme (MCS), and data of the terminal UE4 is an FTP service with a large data packet; since the data of UE1, UE2, and UE3 are transmitted according to a low-rate fixed MCS, the base station may transmit the data of UE4 by superposition on the basis of transmitting the data of UE1, UE2, and UE3 by Resource Block (RB) RB1 and RB2, RB3 and RB4, RB5 and RB6, respectively, that is, multi-user superposition transmission;

when multi-user superposition transmission is performed, data of the UE4 and data of the UE1, the UE2 and the UE3 interfere with each other, so that relatively more power needs to be allocated to the UE1, the UE2 and the UE3 to meet service transmission requirements, the UE is guaranteed to be correctly received by the terminal, and the remaining relatively less power can be allocated to data transmission of the UE 4; since the power allocated to the UE4 for data transmission is relatively low, when receiving data, it needs to first eliminate the interference formed by the terminals of the superimposed transmission by using a multi-user detection technology (such as SIC) and then detect the data sent by the base station, then the UE4 needs to know some information of the superimposed transmission terminals, for example, the power allocation information of the UE1, the UE2, the UE3, and the UE4, the transmission layer information, etc., so that the UE4 can eliminate the signals of other interfering terminals and detect its own data;

therefore, the base station needs to determine the multi-user transmission configuration information corresponding to the specified time-frequency resource and send the information to the user terminal UE 4; as shown in fig. 6, the base station determines multi-user transmission configuration information corresponding to the specified time-frequency resource, where the multi-user transmission configuration information includes configuration information of UE1, UE2, and UE3 performing superposition transmission on RB groups (RB1, RB2), (RB3, RB4), (RB5, and RB6) with UE4, and specifically, the configuration information includes downlink Power Allocation (PA) information (i.e., PA1, PA2, and PA3) of terminals UE1, UE2, and UE3 performing superposition transmission;

the downlink power allocation information of the superimposed terminal may be power allocation ratio information between the superimposed terminals, for example, a power allocation ratio value, or an indication of the power allocation ratio, for example, the system defines a plurality of power allocation ratios in advance, and indicates the power allocation ratio between the superimposed terminals by using an index; or the power distribution proportion of the power of the terminal for the superposition transmission relative to a preset reference (such as the maximum transmitting power); or a power allocation parameter, e.g., a power value, for a terminal of the superimposed transmission, or a power value relative to a preset reference (e.g., a maximum transmission power), or an indication of a power allocation value, e.g., a plurality of power values are predefined by the system, a power value for a terminal of the superimposed transmission is indicated by an index, etc.

In this example, since the data of UE1, UE2, and UE3 are transmitted according to a fixed MCS, the multi-user transmission configuration information does not need to carry MCS information of the terminal for superposition transmission.

In this example, according to the preset rule of the system, the UE1, UE2, UE3 performing VoIP service transmission and the UE4 performing FTP service transmission perform superposition transmission on the first transport layer, and therefore, the multi-user transmission configuration information does not need to carry the transport layer indication information of the terminal performing superposition transmission.

In this example, the base station may send the multi-user transmission configuration information to the UE4 through RRC signaling, or may send the multi-user transmission configuration information to the UE4 through DCI, or may send the multi-user transmission configuration information to the UE4 through RRC signaling, and indicate the multi-user transmission configuration information used by the UE4 through DCI, for example, indicate the used multi-user transmission configuration information through a bit field in the DCI.

In this example, when the UE4 performs data transmission and reception detection, the multi-user transmission configuration information sent by the base station is received first, then the multi-user transmission configuration information corresponding to the RB groups (RB1, RB2), (RB3, RB4), (RB5, RB6) is obtained, the data of the terminal for superposition transmission is detected according to the corresponding multi-user transmission configuration information, interference cancellation is performed according to a detection technique (for example, SIC technique), then the data sent by the base station to the UE4 is detected, and finally the data sent by the base station is obtained.

In this example, the multi-user transmission configuration information determined by the base station and sent to the UE4 corresponds to a plurality of resource block groups in the frequency domain and one subframe in the time domain, respectively. The multi-user transmission configuration information may also correspond to a plurality of resource blocks on the frequency domain, respectively, or correspond to the entire transmission bandwidth, depending on factors such as the service requirement or service type of the multi-user superposition transmission, the resource granularity or resource allocation, and the implementation scheme of the multi-user superposition transmission.

In this example, the UE1, UE2, and UE3 may also be terminals that use a low-rate fixed MCS for packet traffic transmission.

Application example two

As shown in fig. 7, the base station performs superposition transmission on data of multiple terminals with different service requirements or service types on a specified time-frequency resource; data of the terminal UE4 is an FTP service with a large data packet, and a 2-layer data transmission mode is adopted; data of the terminals UE1, UE2, UE3, UE5, UE6 and UE7 are VoIP services with small data packets and are transmitted according to a fixed MCS at a low rate;

in this example, the base station transmits data of UE1 superimposed on the first transmission layer of UE4 and resource blocks RB1 and RB2, transmits data of UE2 superimposed on the first transmission layer of UE4 and resource blocks RB3 and RB4, transmits data of UE3 superimposed on the first transmission layer of UE4 and resource blocks RB5 and RB6, transmits data of UE5 superimposed on the second transmission layer of UE4 and resource blocks RB1 and RB2, transmits data of UE6 superimposed on the second transmission layer of UE4 and resource blocks RB3 and RB4, and transmits data of UE7 superimposed on the second transmission layer of UE4 and resource blocks RB5 and RB 6.

Moreover, the base station determines multi-user transmission configuration information corresponding to the specified time-frequency resource and sends the information to the terminal UE 4; as shown in fig. 7, the base station determines multi-user transmission configuration information corresponding to a specified time-frequency resource, where the multi-user transmission configuration information includes configuration information for UE1, UE2, UE3, UE5, UE6, and UE7 to perform superposition transmission with UE4 in RB groups (RB 4), (RB 4, and RB4), and specifically, the configuration information includes downlink power allocation information (i.e., PA 4, and PA 4) of terminal UE4, and UE4 for superposition transmission and transmission layer indication information (i.e., L4);

the downlink power allocation information of the terminals in the overlapping transmission may be a power allocation proportion between the terminals in the overlapping transmission, or an indication of the power allocation proportion between the terminals in the overlapping transmission, or a power allocation proportion of the power of the terminals in the overlapping transmission relative to a preset reference, or a power allocation parameter of the terminals in the overlapping transmission, or an indication of the power allocation parameter of the terminals in the overlapping transmission.

The transmission layer indication information includes multi-user transmission layer information for indicating which transmission layer has been subjected to multi-user superposition transmission.

In this example, the base station may send the multi-user transmission configuration information to the UE4 through RRC signaling, or may send the multi-user transmission configuration information to the UE4 through DCI, or may send the multi-user transmission configuration information to the UE4 through RRC signaling, and indicate the multi-user transmission configuration information used by the UE4 through DCI.

In this example, when the UE4 performs data transmission and reception detection, the multi-user transmission configuration information sent by the base station is received first, then the multi-user transmission configuration information corresponding to the RB groups (RB1, RB2), (RB3, RB4), (RB5, RB6) is obtained, the data of the terminal superimposed on the transmission layer is detected according to the corresponding multi-user transmission configuration information, interference cancellation is performed according to a detection technique (for example, SIC technique), then the data sent by the base station to the UE4 is detected, and finally the data sent by the base station is obtained.

In this example, the configuration information included in the multi-user transmission configuration information may also be in other forms, for example, UE1, UE2, UE3 and UE4 perform superposition transmission on a first transmission layer, and UE5, UE6, UE7 and UE4 perform superposition transmission on a second transmission layer, so that the multi-user transmission layer information included in the transmission layer indication information may collectively indicate that the first transmission layer performs multi-user superposition transmission and collectively indicate that the second transmission layer performs multi-user superposition transmission through the same indication information, or implicitly indicate (e.g., power allocation information) which transmission layer performs multi-user superposition transmission through other information, where the multi-user transmission configuration information may not include the transmission layer indication information; in addition, the power allocation information of the terminals with the same power allocation may be collectively indicated by the same power allocation information.

Application example three

As shown in fig. 8, a base station performs superposition transmission on data of a plurality of terminals with different service requirements or service types on a specified time-frequency resource; the data of the terminal UE1, UE2, and UE3 are FTP services with smaller data packets, and are transmitted by using a low-rate MCS, and the data of the terminal UE4 is FTP services with larger data packets;

in this example, the base station transmits data of UE1 and UE4 in resource blocks RB1 to RB6, data of UE2 and UE4 in resource blocks RB7 to RB12, and data of UE3 and UE4 in resource blocks RB13 to RB 18.

Moreover, the base station determines multi-user transmission configuration information corresponding to the specified time-frequency resource and sends the information to the user terminal UE 4; as shown in fig. 8, the base station determines multi-user transmission configuration information corresponding to the specified time-frequency resource, where the multi-user transmission configuration information includes configuration information of UE1, UE2, and UE3 performing superposition transmission on RB groups RB1 to RB6, RB7 to RB12, and RB13 to RB18 respectively with UE4, and specifically, the configuration information includes downlink power allocation information (i.e., PA1, PA2, PA3) and modulation and coding scheme MCS information (i.e., MCS1, MCS2, and MCS3) of terminals UE1, UE2, and UE3 performing superposition transmission;

The MCS information may be an MCS level, and the MCS level value indicates which modulation and coding scheme is used by the terminal performing superposition transmission.

In this example, according to the preset rule of the system, the UE1, UE2, and UE3 performing the small packet FTP service transmission and the UE4 performing the large packet FTP service transmission perform the overlay transmission on the first transport layer, so that the multi-user transmission configuration information does not need to carry the transport layer indication information of the terminal performing the overlay transmission.

In this example, when the UE4 performs data transmission and reception detection, the UE firstly receives the multi-user transmission configuration information sent by the base station, then obtains the multi-user transmission configuration information corresponding to the RB groups RB1 to RB6, RB7 to RB12, and RB13 to RB18, detects data of the terminal that performs superposition transmission according to the corresponding multi-user transmission configuration information, performs interference cancellation according to a detection technique (for example, SIC technique), then detects data sent by the base station to the UE4, and finally obtains data sent by the base station.

Application example four

As shown in fig. 9, the base station performs superposition transmission on data of multiple terminals with different service requirements or service types on a specified time-frequency resource; the data of the terminals UE1, UE2, UE3, UE5, UE6, and UE7 are VoIP services with small data packets, and are transmitted according to a fixed MCS at a low rate; data of the terminals UE4 and UE8 are FTP services with larger data packets;

since the VoIP service is transmitted by semi-persistent scheduling, the transmission interval may be 20ms, for example, in this embodiment, the VoIP service terminals UE1, UE2, and UE3 transmit on subframe1 according to semi-persistent scheduling, and UE1 and UE4 perform superposition transmission on resource blocks RB1 and RB2, UE2 and UE4 perform superposition transmission on resource blocks RB3 and RB4, and UE3 and UE4 perform superposition transmission on resource blocks RB5 and RB 6; VoIP service terminals UE5, UE6, UE7 are transmitted on subframe2 according to semi-persistent scheduling, UE5 and UE8 are transmitted in superposition on resource blocks RB1, RB2, UE6 and UE8 are transmitted in superposition on resource blocks RB3, RB4, and UE7 and UE8 are transmitted in superposition on resource blocks RB5, RB 6.

The base station determines multi-user transmission configuration information and sends the multi-user transmission configuration information to the terminal UE4 and the terminal UE 8; as shown in fig. 9, the base station determines multi-user transmission configuration information, which includes configuration information for overlapping transmission on RB groups (RB1, RB2), (RB3, RB4), (RB5, RB6) of UE1, UE2, and UE3 in subframe1 with UE4, and configuration information for overlapping transmission on RB groups (RB1, RB2), (RB3, RB4), (RB5, 6) of UE5, UE6, and UE7 in subframe2 with UE8, specifically, the configuration information includes downlink power allocation information (i.e., PA11, PA12, PA13, and PA21, PA21, PA23) and transmission layer indication information (i.e., L11, L12, L13, and L21, L22, L23) of the terminals for overlapping transmission, and so on the same;

The transmission layer indication information may include multi-user transmission layer information for indicating which transmission layer the multi-user superposition transmission is performed on.

In this example, the base station may send the multi-user transmission configuration information to the UE4 and the UE8 through broadcast signaling, or may send the multi-user transmission configuration information to the UE4 and the UE8 through multicast signaling, or may send the multi-user transmission configuration information to the UE4 and the UE8 through RRC signaling, or may send the multi-user transmission configuration information to the UE4 and the UE8 through DCI, or may send the multi-user transmission configuration information to the UE4 and the UE8 through RRC signaling, and indicate the multi-user transmission configuration information used by the UE4 and the UE8 through DCI.

In this example, when the UE4 and the UE8 perform data transmission and reception detection, the multi-user transmission configuration information sent by the base station is received first, then the multi-user transmission configuration information corresponding to the RB groups (RB1, RB2), (RB3, RB4), (RB5, RB6) in the corresponding subframes is obtained, data of the terminal superimposed and transmitted on each transmission layer is detected according to the corresponding multi-user transmission configuration information, interference cancellation is performed according to a detection technique (for example, SIC technique), then the data sent by the base station to the UE4 and the UE8 is detected, and finally the data sent by the base station is obtained.

In this example, due to the characteristic of semi-persistent scheduling transmission of VoIP service, the multi-user transmission configuration information determined and sent by the base station to the UE4 and UE8 corresponds to multiple resource block groups in the frequency domain, and may correspond to multiple subframes in the time domain, or correspond to subframes in one or more radio frames.

In this embodiment, the multi-user superposition transmission may also be implemented in combination with multi-user MIMO transmission (e.g., spatial multiplexing), so that the multi-user transmission configuration information may also carry information of the multi-user MIMO transmission, for example, the transmission layer indication information further includes transmission layer number information for indicating the number of transmission layers of the terminal.

In this example, the multi-user transmission configuration information may also carry other information of the terminal in the superposition transmission, such as Modulation and Coding Scheme (MCS) information, information or indication information of a code sequence such as a spreading code and a precoding, and the like, depending on factors such as a service requirement or a service type of the multi-user superposition transmission, an implementation scheme of the multi-user superposition transmission, and the like.

Application example five

As shown in fig. 10, data of multiple users with different service requirements or service types are transmitted in a downlink superposition manner on a designated time-frequency resource; the data of the user terminals UE1, UE2, UE3, UE5, UE6, and UE7 are VoIP services with small data packets, and are transmitted according to a fixed MCS at a low rate; data of the user terminals UE4 and UE8 is FTP service with a large data packet.

In this example, the base station determines in advance multi-user transmission configuration information, which includes configuration information for UE1, UE2, UE3 to perform overlap transmission with UE4 on RB groups (RB1, RB2), (RB3, RB4), (RB5, RB6) in subframe1, configuration information for overlap transmission on UE5, UE6, UE7 to perform overlap transmission with UE8 on RB groups (RB1, RB2), (RB3, RB4), (RB5, RB6) in subframe2, and the like, specifically, the above configuration information includes downlink power allocation information (i.e., PA11, PA12, PA13, PA21, 21, PA23) and transmission layer indication information (i.e., L11, L12, L39 13, and L21, L22, L23) of a terminal for overlap transmission, and the like;

In this example, the base station implements downlink multi-user superposition transmission according to preset determined multi-user transmission configuration information; the base station transmits data of an FTP service terminal UE4 on resource blocks RB 1-RB 6 in a subframe1 according to the scheduling information, transmits data of VoIP service terminals UE1, UE2, and UE3 on RB groups (RB1, RB2), (RB3, RB4), (RB5, RB6) in a subframe1 respectively according to the semi-persistent scheduling information, and performs superposition transmission of UE1 and UE4, UE2 and UE4, and UE3 and UE4 according to multi-user transmission configuration information corresponding to corresponding time-frequency resources in the multi-user transmission configuration information, for example, sets signal power of a terminal for superposition transmission according to power allocation information in the multi-user transmission configuration information corresponding to the corresponding time-frequency resources, and performs superposition transmission on a corresponding transmission layer according to transmission layer indication information; similarly, the base station transmits data of the FTP service terminal UE8 on resource blocks RB1 to RB6 in the subframe2 according to the scheduling information, transmits data of the VoIP service terminal UE5, UE6, and UE7 on RB groups (RB1, RB2), (RB3, RB4), (RB5, and RB6) in the subframe2 according to the semi-persistent scheduling information, and performs superposition transmission of the UE5 and UE8, the UE6 and UE8, and the UE7 and UE8 according to the multi-user transmission configuration information corresponding to the corresponding time-frequency resource in the multi-user transmission configuration information.

In this example, the base station further sends predetermined multi-user transmission configuration information to the terminals UE4 and UE8, for example, the multi-user transmission configuration information may be sent to UE4 and UE8 through broadcast signaling, or the multi-user transmission configuration information may be sent to UE4 and UE8 through multicast signaling, or the multi-user transmission configuration information may be sent to UE4 and UE8 through RRC signaling, or the multi-user transmission configuration information may be sent to UE4 and UE8 through DCI, or the multi-user transmission configuration information may be sent to UE4 and UE8 through RRC signaling, and the multi-user transmission configuration information used by UE4 and UE8 is indicated through DCI.

In this example, UE4 and UE8 receive multi-user transmission configuration information sent by a base station, and when performing data transmission reception detection, first obtain multi-user transmission configuration information corresponding to RB groups (RB1, RB2), (RB3, RB4), (RB5, RB6) in a corresponding subframe, then detect data of a terminal superimposed for transmission on each transmission layer according to the corresponding multi-user transmission configuration information and perform interference cancellation according to a detection technique (for example, SIC technique), then detect data sent by the base station to UE4 and UE8, and finally obtain data sent by the base station.

In this example, due to the characteristic of semi-persistent scheduling transmission of VoIP service, the multi-user transmission configuration information predetermined by the base station and sent to the UE4 and UE8 corresponds to multiple resource block groups respectively in the frequency domain, may correspond to multiple subframes respectively in the time domain, or corresponds to subframes in one or more radio frames respectively.

In this example, the multi-user transmission configuration information predetermined and sent by the base station to the user terminal may also correspond to a plurality of resource blocks in the frequency domain, or correspond to the entire transmission bandwidth, or correspond to one subframe in the time domain, or correspond to a plurality of subframe groups, respectively, depending on factors such as the service requirement or service type of the multi-user superposition transmission, the resource granularity or resource allocation, and the implementation scheme of the multi-user superposition transmission.

In this example, depending on factors such as the service requirement or service type of the multi-user superposition transmission, the implementation scheme of the multi-user superposition transmission, and the like, the multi-user transmission configuration information that is predetermined and sent by the base station to the user terminal may also carry other information of the terminal of the superposition transmission, for example, modulation and coding scheme MCS information, information or indication information of code sequences such as spreading codes and precoding, and the like.

In this example, when the terminal does not receive the multi-user transmission configuration information sent by the base station, data transmission processing may be performed according to a preset rule of the system; for example, the terminal performs data transmission and reception detection according to the multi-user transmission configuration information received last time, for example, assuming that the multi-user transmission configuration information predetermined by the base station and sent to the terminal corresponds to each resource block or resource block group in the frequency domain and corresponds to each subframe in 2 radio frames (20ms) in the time domain, when the terminal does not receive updated multi-user transmission configuration information at the time of updating the multi-user transmission configuration information, the terminal obtains the multi-user transmission configuration information corresponding to the specified time-frequency resource according to the multi-user transmission configuration information received last time, and performs data reception according to the obtained information; or, the terminal processes according to the non-multi-user superposition transmission condition, for example, the terminal performs single-user data transmission processing according to currently received system scheduling information and the like; or, the terminal performs data transmission and reception detection within the preset time or period range of the system according to the multi-user transmission configuration information received last time, and processes the data transmission and reception detection outside the preset time or period range of the system according to the non-multi-user superposition transmission condition.

Application example six

The data transmission method provided by the present example is used for uplink multi-user superposition transmission.

As shown in fig. 11, data of a plurality of terminals with different service requirements or service types are transmitted in an uplink superposition manner on a designated time-frequency resource; the data of the terminals UE1, UE2, UE3, UE5, UE6, and UE7 are VoIP services with small data packets, and are transmitted according to a fixed MCS at a low rate; data of the user terminals UE4 and UE8 is FTP service with a large data packet.

In this example, the base station determines in advance multi-user transmission configuration information, which includes configuration information for UE, UE and UE to perform superposition transmission with the UE on RB group (RB, RB), (RB, RB) in subframe, configuration information for UE, UE and UE to perform superposition transmission with the UE on RB group (RB, RB), (RB, RB) in subframe, and so on, and specifically, the above configuration information includes Power Control (PC) information (i.e., PC and PC, PC) and transmission layer indication information (i.e., L and L, L) of the terminal to perform superposition transmission, and so on;

the Power Control information of the terminal in the superimposed transmission may be a Power Control parameter of the terminal in the superimposed transmission, or an indication of the Power Control parameter of the terminal in the superimposed transmission, or a Power adjustment parameter of the terminal in the superimposed transmission, such as a Transmit Power Control (TPC) command, a Power adjustment step preset by the system, or an indication of the Power adjustment parameter of the terminal in the superimposed transmission.

The transport layer indication information may include multi-user transport layer information, which is used to indicate which transport layer the terminal performs uplink superposition transmission on.

In this example, the base station sends predetermined multi-user transmission configuration information to the terminals UE1, UE2, UE3, UE5, UE6, and UE7, for example, the multi-user transmission configuration information may be sent to the terminals through broadcast signaling, or the multi-user transmission configuration information may be sent to the terminals through multicast signaling, or the multi-user transmission configuration information may be sent to the terminals through RRC signaling, or the multi-user transmission configuration information may be sent to the terminals through DCI, and the multi-user transmission configuration information used by the terminals may be indicated through DCI.

In this example, the terminals UE1, UE2, UE3, UE5, UE6, and UE7 receive multi-user transmission configuration information sent by the base station, and implement uplink superposition transmission; the FTP service terminal UE4 performs uplink transmission on resource blocks RB 1-RB 6 in a subframe1 according to the scheduling information, the VoIP service terminals UE1, UE2 and UE3 perform uplink transmission on RB groups (RB1, RB2), (RB3, RB4) and (RB5 and RB6) in a subframe1 respectively according to the semi-persistent scheduling information, and the UE1, UE2 and UE3 realize uplink multi-user superposition transmission with the UE4 according to multi-user transmission configuration information corresponding to corresponding time-frequency resources acquired from the received multi-user transmission configuration information, for example, the UE1, UE2 and UE3 set or adjust uplink transmission power according to power control information in the acquired transmission configuration information, and perform uplink transmission on a corresponding transmission layer according to transmission layer indication information; similarly, the FTP service terminal UE8 performs uplink transmission on resource blocks RB1 to RB6 in the subframe2 according to its scheduling information, the VoIP service terminals UE5, UE6, and UE7 perform uplink transmission on RB groups (RB1, RB2), (RB3, RB4), (RB5, RB6) in the subframe2 according to the semi-persistent scheduling information, and the UE5, UE6, and UE7 implement uplink superposition transmission with the UE8 according to the multi-user transmission configuration information corresponding to the corresponding time-frequency resource acquired from the received multi-user transmission configuration information.

In this example, when the base station performs data transmission and reception detection, data sent by the terminals UE4 and UE8 may be detected, and then, data sent by the terminals UE1, UE2, UE3, UE5, UE6, and UE7 that perform superposition transmission is detected by using a detection technology (for example, SIC technology) according to the multi-user transmission configuration information corresponding to the specified time-frequency resource in the multi-user transmission configuration information; and finally, the base station acquires the data sent by each user terminal.

In this example, due to the characteristic of semi-persistent scheduling transmission of the VoIP service, the multi-user transmission configuration information predetermined by the base station and sent to the ue corresponds to the plurality of resource block groups in the frequency domain, and may correspond to the plurality of subframes in the time domain, or correspond to the subframes in one or more radio frames.

In this example, depending on the service requirement or service type of the multi-user superposition transmission, the implementation scheme of the multi-user superposition transmission, and other factors, the multi-user transmission configuration information predetermined by the base station and sent to the terminal may also carry other information of the terminal for superposition transmission, for example, information or indication information of a code sequence such as a spreading code, precoding, and the like.

In this example, when the terminal does not receive the multi-user transmission configuration information sent by the base station, data transmission processing may also be performed according to a preset rule of the system; for example, the terminal performs data transmission according to the multi-user transmission configuration information received last time, for example, assuming that the multi-user transmission configuration information predetermined by the base station and transmitted to the terminal corresponds to each resource block or resource block group in the frequency domain and corresponds to each subframe in 2 radio frames (20ms) in the time domain, when the terminal does not receive updated multi-user transmission configuration information at the time of updating the multi-user transmission configuration information, the terminal obtains the multi-user transmission configuration information corresponding to the specified time-frequency resource according to the multi-user transmission configuration information received last time, and performs data transmission according to the obtained information; or, the terminal processes according to the non-multi-user superposition transmission condition, for example, the terminal transmits data according to the currently received system scheduling information and the like; or, the terminal sends data within the preset time or period of the system according to the multi-user transmission configuration information received last time, and processes the data outside the preset time or period of the system according to the non-multi-user superposition transmission condition.

Application example seven

As shown in fig. 12, data of multiple terminals are transmitted by uplink superposition on a specified time-frequency resource; the data of the terminals UE1, UE2, UE3, UE4, UE5, and UE6 are packet services with smaller data packets, and are transmitted by using a fixed MCS at a low rate.

In this example, the terminal UE1, UE2, UE3, UE4, UE5, and UE6 first obtain the multi-user transmission configuration information for performing uplink transmission on the designated resource; for example, each terminal obtains the multi-user transmission configuration information of uplink transmission on the designated time-frequency resource according to the preset rule of the system, for example, each terminal obtains spreading code sequence information from a spreading code sequence set preset by the system according to the index of each terminal; then each terminal adopts the obtained spreading code to perform uplink transmission on the appointed time frequency resource;

the assigned resource for the terminal to perform uplink transmission may be determined according to scheduling information sent by the system, or may be determined according to scheduling information fixedly configured by the system;

the spreading codes used by the terminals for superposition transmission may be orthogonal spreading codes, non-orthogonal spreading codes, or low-correlation spreading codes.

In the present example, the UE1 and the UE4 perform superposition transmission on resource blocks RB1 to RB6, the UE2 and the UE5 perform superposition transmission on resource blocks RB7 to RB12, and the UE3 and the UE6 perform superposition transmission on resource blocks RB13 to RB 18.

In this example, when the base station performs data transmission and reception detection, it may first acquire multi-user transmission configuration information of the terminals performing uplink transmission on each RB group RB1 to RB6, RB7 to RB12, RB13 to RB18, and detect data sent by each terminal to the base station according to corresponding information and a detection technique (e.g., SIC technique); or, the base station may first acquire multi-user transmission configuration information of terminals that may perform uplink superposition transmission on each RB group, detect which terminals perform uplink transmission according to the corresponding information, and further detect data sent by each terminal to the base station according to the information and, for example, the SIC technology; and finally, the base station acquires the data sent by each terminal.

In this example, due to the spreading code sequence, more terminals can be supported to perform uplink superposition transmission on the same resource block, and depending on the length of the spreading code sequence, for example, if the length of the spreading code sequence used is 4, 4 or more terminals can be supported to perform uplink superposition transmission on the same resource block.

It should be noted that the above embodiment of the present invention is applicable to downlink multi-user transmission and uplink multi-user transmission, and when the embodiment is implemented in an actual system, the contents included in the multi-user transmission configuration information associated with the downlink multi-user transmission and the multi-user transmission configuration information associated with the uplink multi-user transmission may be different, and some implementation steps and orders of the downlink multi-user transmission and the uplink multi-user transmission may also be different.

It should be further noted that the multi-user transmission configuration information and the information contained therein described in the foregoing embodiment of the present invention are not limited to the form or format described in the foregoing embodiment, and may be in other forms or formats.

Finally, it should be noted that the above embodiment of the present invention is not only applicable to the service requirements or service types listed in the embodiment of the present invention, but also applicable to a case where multiple terminals with different service requirements or service types perform multi-user transmission on a specified time-frequency resource, and may also be applicable to other service requirements or service types, and other multi-user transmission cases.

A data transmission apparatus provided in an embodiment of the present invention may be disposed in a terminal and/or a base station, as shown in fig. 13, and includes: an obtaining module 1301, configured to obtain multi-user transmission configuration information corresponding to a specified time-frequency resource; the multi-user transmission configuration information corresponding to the specified time frequency resource comprises: configuring information for performing multi-user transmission on the specified time-frequency resource by a plurality of terminals with different service requirements or service types;

a transmission module 1302, configured to perform data transmission on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource.

Optionally, the multi-user transmission comprises:

power control information;

transport layer indication information;

modulating coding mode information;

code sequence information.

Optionally, the power control information may include, but is not limited to, any one or any several of the following:

Wherein the transport layer indication information may include, but is not limited to:

Wherein the code sequence information may include, but is not limited to:

spreading code information, and/or precoding information.

Optionally, the obtaining module may be further configured to receive the multi-user transmission configuration information before obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource.

Optionally, the obtaining module may be further configured to determine the multi-user transmission configuration information before obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource.

Accordingly, the obtaining module may be further configured to send the multi-user transmission configuration information after determining the multi-user transmission configuration information.

Accordingly, the obtaining module sends the multi-user transmission configuration information, which may include but is not limited to at least one of:

Wherein the radio resource control, RRC, signaling comprises semi-persistent scheduling configuration signaling.

Optionally, the obtaining module 1301 obtains the multi-user transmission configuration information corresponding to the specified time-frequency resource may refer to:

the obtaining module 1301 obtains multi-user transmission configuration information corresponding to a specified time-frequency resource from the received multi-user transmission configuration information; and/or acquiring multi-user transmission configuration information corresponding to the specified time frequency resource from the determined multi-user transmission configuration information.

Optionally, the obtaining module 1301 obtains the multi-user transmission configuration information corresponding to the specified time-frequency resource from the received multi-user transmission configuration information, but is not limited to include any one of the following manners or any several manners:

the obtaining module 1301 obtains multi-user transmission configuration information corresponding to a specified time-frequency resource from multi-user transmission configuration information carried in a received broadcast signaling;

the obtaining module 1301 obtains multi-user transmission configuration information corresponding to the specified time-frequency resource from multi-user transmission configuration information carried in the received multicast signaling;

the obtaining module 1301 obtains multi-user transmission configuration information corresponding to the specified time-frequency resource from multi-user transmission configuration information carried in the received RRC signaling;

the obtaining module 1301 obtains the multi-user transmission configuration information corresponding to the specified time-frequency resource from the multi-user transmission configuration information carried in the received DCI signaling;

the obtaining module 1301 obtains the multi-user transmission configuration information corresponding to the specified time-frequency resource from the multi-user transmission configuration information carried in the received RRC signaling and the multi-user transmission configuration indication information carried in the received DCI signaling.

Optionally, the obtaining module 1301 obtains the multi-user transmission configuration information corresponding to the specified time-frequency resource from the determined multi-user transmission configuration information, and the obtaining module may include, but is not limited to, at least one of:

the obtaining module 1301 obtains multi-user transmission configuration information corresponding to the specified time-frequency resource from the determined multi-user transmission configuration information according to the system scheduling information;

the obtaining module 1301 obtains the multi-user transmission configuration information corresponding to the specified time-frequency resource from the determined multi-user transmission configuration information according to a preset rule of the system.

Optionally, the transmission module 1302 performs data transmission on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource, which may include, but is not limited to, at least one of the following:

the transmission module 1302 receives data on the designated time-frequency resource according to the multi-user transmission configuration information corresponding to the designated time-frequency resource;

the transmission module 1302 sends data on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource.

Optionally, the transmitting module 1302 receives data on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource, where the receiving includes at least one of:

the transmission module 1302 receives data sent by the base station on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource;

the transmission module 1302 receives data sent by a plurality of terminals with different service requirements or service types on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource.

Optionally, the transmission module 1302 sends data on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource, and may include, but is not limited to, at least one of the following:

the transmission module 1302 superimposes data of a plurality of terminals with different service requirements or service types on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource and then sends the superimposed data;

the transmission module 1302 performs spatial multiplexing on data of a plurality of terminals with different service requirements or service types on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource and then sends out the data;

the transmission module 1302 performs spatial multiplexing on data to be transmitted on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource and then transmits the data to be transmitted;

the transmission module 1302 sends data to be sent out on the designated time frequency resource according to the multi-user transmission configuration information corresponding to the designated time frequency resource.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing the relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module/unit in the above embodiments may be implemented in the form of hardware, and may also be implemented in the form of a software functional module. The present invention is not limited to any specific form of combination of hardware and software.

Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A method of data transmission, comprising:

acquiring multi-user transmission configuration information corresponding to the specified time-frequency resource; the multi-user transmission configuration information corresponding to the specified time frequency resource comprises: configuring information for performing multi-user transmission on the specified time-frequency resource by a plurality of terminals with different service requirements or service types; wherein the configuration information comprises: transport layer indication information; the transport layer indication information includes: transmission layer number information, multi-user transmission layer information; the information of the number of transmission layers is used for indicating the number of transmission layers, and the information of the multi-user transmission layers is used for indicating which transmission layer to perform multi-user transmission;

2. The method of claim 1, wherein the multi-user transmission comprises:

3. The method of claim 1, wherein the multi-user transmission configuration information comprises any one or more of:

4. The method of claim 1, wherein the multi-user transmission configuration information comprises any one or more of:

5. The method of claim 1, wherein the configuration information further comprises at least one of:

power control information;

modulating coding mode information;

code sequence information.

6. The method of claim 5, wherein the power control information comprises any one or more of:

7. The method of claim 3, wherein different terminals of the same second traffic demand or second traffic type are subject to multi-user transmission on different resource blocks or resource block groups with terminals of the first traffic demand or first traffic type.

8. The method of claim 5, wherein the code sequence information comprises:

spreading code information, and/or precoding information.

9. The method of claim 1, wherein:

and the appointed time frequency resource is determined according to the system scheduling information and is used for data transmission.

10. The method of claim 1, wherein obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource further comprises:

receiving multi-user transmission configuration information.

11. The method of claim 1, wherein obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource further comprises:

multi-user transmission configuration information is determined.

12. The method of claim 11, wherein the determining the multi-user transmission configuration information further comprises:

and sending the multi-user transmission configuration information.

13. The method of claim 12, wherein the sending the multi-user transmission configuration information comprises at least one of:

14. The method of claim 13, wherein the Radio Resource Control (RRC) signaling comprises semi-persistent scheduling configuration signaling.

15. The method of claim 1, wherein the obtaining multi-user transmission configuration information corresponding to a specified time-frequency resource comprises:

16. The method of claim 15, wherein the obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource from the received multi-user transmission configuration information comprises any one or more of the following manners:

17. The method of claim 15, wherein the obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource from the determined multi-user transmission configuration information comprises at least one of:

18. The method according to any of claims 1 to 17, wherein the data transmission on the specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource comprises at least one of:

19. The method of claim 18, wherein receiving data on a specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource comprises at least one of:

20. The method of claim 18, wherein the sending data on the designated time-frequency resource according to the multi-user transmission configuration information corresponding to the designated time-frequency resource comprises at least one of:

21. A data transmission apparatus, comprising:

an obtaining module, configured to obtain multi-user transmission configuration information corresponding to a specified time-frequency resource; the multi-user transmission configuration information corresponding to the specified time frequency resource comprises: configuring information for performing multi-user transmission on the specified time-frequency resource by a plurality of terminals with different service requirements or service types; wherein the configuration information comprises: transport layer indication information; the transport layer indication information includes: transmission layer number information, multi-user transmission layer information; the information of the number of transmission layers is used for indicating the number of transmission layers, and the information of the multi-user transmission layers is used for indicating which transmission layer to perform multi-user transmission;

22. The apparatus of claim 21, wherein the multi-user transmission comprises:

23. The apparatus of claim 21, wherein the multi-user transmission configuration information comprises any one or any of:

24. The apparatus of claim 21, wherein the multi-user transmission configuration information comprises any one or any of:

25. The apparatus of claim 21, wherein the configuration information further comprises at least one of:

power control information;

modulating coding mode information;

code sequence information.

26. The apparatus of claim 25, wherein the power control information comprises any one or more of:

27. The apparatus of claim 23, wherein different terminals of a same second traffic demand or second traffic type are multiuser transmitted on different resource blocks or groups of resource blocks with terminals of a first traffic demand or first traffic type.

28. The apparatus of claim 25, wherein the code sequence information comprises:

spreading code information, and/or precoding information.

29. The apparatus of claim 21, wherein:

30. The apparatus of claim 21, wherein:

the obtaining module is further configured to receive the multi-user transmission configuration information before obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource.

31. The apparatus of claim 21, wherein:

the obtaining module is further configured to determine the multi-user transmission configuration information before obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource.

32. The apparatus of claim 31, wherein:

the obtaining module is further configured to send the multi-user transmission configuration information after determining the multi-user transmission configuration information.

33. The apparatus of claim 32, wherein the means for obtaining sends the multi-user transmission configuration information comprises at least one of:

34. The apparatus of claim 33, wherein the Radio Resource Control (RRC) signaling comprises semi-persistent scheduling configuration signaling.

35. The apparatus of claim 21, wherein the obtaining module obtains the multi-user transmission configuration information corresponding to the designated time-frequency resource by:

36. The apparatus of claim 35, wherein the module for acquiring the multi-user transmission configuration information corresponding to the specified time-frequency resource from the received multi-user transmission configuration information comprises any one or more of the following manners:

37. The apparatus of claim 35, wherein the means for obtaining the multi-user transmission configuration information corresponding to the specified time-frequency resource from the determined multi-user transmission configuration information comprises at least one of:

38. The apparatus according to any of claims 21-37, wherein the transmission module performs data transmission on the designated time-frequency resource according to the multi-user transmission configuration information corresponding to the designated time-frequency resource, and includes at least one of:

39. The apparatus of claim 38, wherein the transmission module receives data on a specified time-frequency resource according to the multi-user transmission configuration information corresponding to the specified time-frequency resource, comprising at least one of:

40. The apparatus of claim 38, wherein the transmission module transmits data on the designated time-frequency resource according to the multi-user transmission configuration information corresponding to the designated time-frequency resource, comprising at least one of: