CN108809547B

CN108809547B - Data transmission method, base station and terminal

Info

Publication number: CN108809547B
Application number: CN201710314018.2A
Authority: CN
Inventors: 沈晓冬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2017-05-05
Filing date: 2017-05-05
Publication date: 2020-09-01
Anticipated expiration: 2037-05-05
Also published as: CN108809547A

Abstract

The invention provides a data transmission method, a base station and a terminal, which are used for solving the problems that in transmission resources of a PDCCH, partial resources are not utilized by the PDCCH to cause resource waste, and redundant information needs to be acquired through retransmission to decode again when data transmission fails, so that the signaling load of a system is increased. The data transmission method of the invention comprises the following steps: and transmitting redundant information of the PDCCH and the PDSCH to the terminal through time slot resources corresponding to the PDCCH. The invention ensures that the terminal does not need to acquire redundant information through a retransmission process, reduces the interaction process between the base station and the terminal, saves signaling resources and simultaneously improves the utilization rate of transmission resources of the PDCCH.

Description

Data transmission method, base station and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method, a base station, and a terminal.

Background

In the design of NR (New Radio, New air interface), a receiving end starts to receive a PDSCH (Physical Downlink Shared Channel) from a kth symbol, where the first k-1 symbols are transmission resources of a PDCCH (Physical Downlink Control Channel), however, some resources in the first k-1 symbols are not utilized by the PDCCH, which causes resource waste.

In addition, in the design of 5G and LTE (Long Term Evolution), data transmission occupies a certain time-frequency resource transmission through a specific data channel. In some cases, part of the time-frequency resources may not be reliably used for the transmission of the data, such as temporarily used for the transmission of some ultra-high reliable ultra-low delay communication (i.e. delay sensitive) services, or part of the time-frequency resources may not be correctly received by the receiving end due to some strong interference. At this time, the redundant information needs to be transmitted through a retransmission process, so that the receiving end performs re-decoding according to the redundant information, and the decoding success rate is improved.

Disclosure of Invention

The invention aims to provide a data transmission method, a base station and a terminal, which are used for solving the problems that part of resources are not utilized by a PDCCH in transmission resources of the PDCCH, so that the resources are wasted, redundant information is required to be obtained through retransmission to carry out decoding again when data transmission fails, and the signaling load of a system is increased.

In order to achieve the above object, an embodiment of the present invention provides a data transmission method, which is applied to a base station, and includes:

and transmitting redundant information of the PDCCH and the PDSCH to the terminal through time slot resources corresponding to the PDCCH.

In order to achieve the above object, an embodiment of the present invention further provides a data transmission method, which is applied to a terminal, and includes:

acquiring redundant information of a Physical Downlink Shared Channel (PDSCH) in time slot resources corresponding to a Physical Downlink Control Channel (PDCCH);

and decoding the PDSCH according to the redundant information.

In order to achieve the above object, an embodiment of the present invention further provides a base station, including:

and the transmission module is used for transmitting the redundant information of the PDCCH and the PDSCH to the terminal through the time slot resource corresponding to the PDCCH.

In order to achieve the above object, an embodiment of the present invention further provides a terminal, including:

an obtaining module, configured to obtain redundant information of a physical downlink shared channel PDSCH in a time slot resource corresponding to a physical downlink control channel PDCCH;

and the decoding module is used for decoding the PDSCH according to the redundant information.

The embodiment of the invention has the following beneficial effects:

according to the technical scheme of the embodiment of the invention, the redundant information of the PDCCH and the PDSCH is transmitted to the terminal through the time slot resource corresponding to the PDCCH, so that the terminal does not need to acquire the redundant information through a retransmission process, the interaction process between the base station and the terminal is reduced, the signaling resource is saved, and the utilization rate of the transmission resource of the PDCCH is improved.

Drawings

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

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

FIG. 3a is a diagram illustrating a position of a PDCCH in a time slot resource according to an embodiment of the present invention;

FIG. 3b is a schematic diagram of the positions of PDCCH and PDSCH in the time slot resource according to the embodiment of the present invention;

fig. 3c is a schematic diagram of the positions of PDCCH, PDSCH and redundant information in the time slot resource according to the embodiment of the present invention;

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

fig. 5 is a first block diagram of a base station according to an embodiment of the present invention;

fig. 6 is a second structural block diagram of a base station according to an embodiment of the present invention;

fig. 7 is a third structural block diagram of a base station according to an embodiment of the present invention;

fig. 8 is a first structural block diagram of a terminal according to an embodiment of the present invention;

fig. 9 is a second structural block diagram of the terminal according to the embodiment of the present invention;

fig. 10 is a third structural block diagram of the terminal according to the embodiment of the present invention;

fig. 11 is a fourth structural block diagram of the terminal according to the embodiment of the present invention;

fig. 12 is a fifth structural block diagram of the terminal according to the embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1, an embodiment of the present invention provides a data transmission method applied to a base station, including:

step 101: and transmitting redundant information of the PDCCH and the PDSCH to the terminal through time slot resources corresponding to the PDCCH.

Here, the time slot resource corresponding to the PDCCH is specifically a transmission resource corresponding to a time slot in which the PDCCH is located, and the Redundancy information of the PDSCH is specifically a Redundancy Version (RV) of the PDSCH. The redundant information may be embodied as redundant information related to the PDSCH or partial information of the PDSCH.

The redundant information of the PDCCH and the PDSCH is transmitted to the terminal through the time slot resource corresponding to the PDCCH, so that the terminal does not need to acquire the redundant information through a retransmission process, the interaction process between the base station and the terminal is reduced, the signaling resource is saved, and meanwhile, the utilization rate of the transmission resource of the PDCCH is improved.

Further, as shown in fig. 2, the step 101 specifically includes:

step 1011: and selecting target resources which are not occupied by the PDCCH from time slot resources corresponding to the PDCCH.

Specifically, as shown in fig. 3c, in the OFDM symbols occupied by the PDCCH, subcarriers and symbol resources that are not mapped with the PDCCH may be selected as target resources to transmit redundant information.

In the time slot resources corresponding to the PDCCH, the target resources not occupied by the PDCCH are selected to transmit the redundant information, so that the resource utilization rate is improved.

Step 1012: and transmitting the redundant information of the PDSCH in the target resource.

The redundant information of the PDSCH is transmitted to the terminal through the target resource, so that the terminal can decode the PDSCH according to the redundant information, and the decoding success rate is improved.

Further, after the step 101, the data transmission method according to the embodiment of the present invention further includes:

and notifying the terminal of the time-frequency position of the redundant information in the time slot resource through a first preset signaling.

The first preset instruction comprises semi-static signaling and/or dynamic signaling, and the dynamic signaling comprises: and the semi-static signaling comprises a high-level signaling, such as a Radio Resource Control (RRC) signaling. The time-frequency position comprises a time-domain position and a frequency-domain position.

The terminal can accurately acquire the time-frequency position of the redundant information in the time slot resource through the first preset signaling, and then accurately receive the redundant information.

Further, the data transmission method according to the embodiment of the present invention further includes:

and sending a second preset signaling to the terminal, wherein the second preset signaling is used for indicating whether the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH or not.

This step may be executed synchronously with step 101 or separately, and the embodiment of the present invention is not limited thereto.

The second preset signaling comprises semi-static signaling and/or dynamic signaling, and the dynamic signaling comprises: and the semi-static signaling comprises a high-level signaling, such as a Radio Resource Control (RRC) signaling. When the second preset signaling is a semi-static signaling, such as an RRC signaling, the second preset signaling may be sent to the terminal after the redundant information of the PDCCH and the PDSCH is transmitted to the terminal.

Preferably, the second preset signaling may be added to DCI of the PDCCH.

By sending the second preset instruction to the terminal, the terminal can know whether the time slot resource corresponding to the PDCCH carries the redundant information of the PDSCH, and then determine whether the redundant information needs to be received subsequently according to the first preset instruction.

Further, the step 101 includes:

transmitting the redundant information to a terminal by adopting the same transmission mode and demodulation reference signal as the PDCCH; or

And transmitting the redundant information to a terminal by adopting the same transmission mode and demodulation reference signal as the PDSCH.

According to the data transmission method, the redundant information of the PDCCH and the PDSCH is transmitted to the terminal through the time slot resource corresponding to the PDCCH, so that the terminal does not need to acquire the redundant information through a retransmission process, the interaction process between the base station and the terminal is reduced, the signaling resource is saved, and meanwhile, the utilization rate of the transmission resource of the PDCCH is improved.

As shown in fig. 4, an embodiment of the present invention further provides a data transmission method, which is applied to a terminal, and includes:

step 401: and acquiring redundant information of a Physical Downlink Shared Channel (PDSCH) in time slot resources corresponding to the Physical Downlink Control Channel (PDCCH).

Step 402: and decoding the PDSCH according to the redundant information.

Here, the PDSCH is decoded by the redundant information, improving the decoding success rate of the PDSCH.

Further, the step 401 includes:

step 4011: and receiving a second preset signaling sent by the base station, wherein the second preset signaling is used for indicating whether the time slot resource corresponding to the physical downlink control channel PDCCH bears the redundant information of the PDSCH.

The second preset signaling comprises semi-static signaling and/or dynamic signaling, and the dynamic signaling comprises: and the semi-static signaling comprises a high-level signaling, such as a Radio Resource Control (RRC) signaling.

Preferably, the second preset signaling is acquired in DCI of the PDCCH.

The terminal can know whether the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH or not through the second preset signaling, and then determine whether the redundant information needs to be received subsequently according to the first preset instruction or not.

Step 4012: and if the second preset signaling indicates that the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH, acquiring the redundant information in the time slot resource according to a first preset instruction, wherein the first preset instruction is used for informing a terminal of the time-frequency position of the redundant information in the time slot resource.

Here, the first preset instruction includes semi-static signaling and/or dynamic signaling, and the dynamic signaling includes: a PDCCH carrying downlink control information DCI, wherein the semi-static signaling comprises a high-level signaling, such as a Radio Resource Control (RRC) signaling; the time frequency position comprises a time domain position and a frequency domain position of redundant information in the time slot resource.

The first preset instruction can accurately acquire the redundant information in the time slot resource, so that the redundant information can be conveniently followed to decode the PDSCH.

As an optional implementation manner, the step 402 includes:

and decoding the PDSCH according to the downlink control information DCI in the PDCCH, the position information of the PDSCH and the redundant information.

As another optional implementation manner, the step 402 includes:

decoding the PDSCH according to the downlink control information DCI in the PDCCH and the position information of the PDSCH; and if the decoding fails, decoding the PDSCH again according to the redundant information.

Further, the location information of the PDSCH is obtained through semi-static signaling, preset starting location and ending location information, common control signaling and/or terminal-specific physical layer control signaling.

Here, the semi-static signaling may be specifically RRC signaling; the common control signaling may specifically be control format indication CFI information carried by a physical control format indicator channel PCFICH in LTE; the terminal-specific physical layer control signaling may specifically be PDCCH in 5G NR.

The data transmission method of the embodiment of the invention receives a second preset signaling sent by a base station, wherein the second preset signaling is used for indicating whether a time slot resource corresponding to a Physical Downlink Control Channel (PDCCH) bears redundant information of the PDSCH or not; if the second preset signaling indicates that the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH, acquiring the redundant information in the time slot resource according to a first preset instruction, wherein the first preset instruction is used for informing a terminal of the time-frequency position of the redundant information in the time slot resource; and decoding the PDSCH according to the redundant information. In the embodiment of the invention, the terminal acquires the redundant information in the time slot resource corresponding to the PDCCH without acquiring the redundant information through the retransmission process between the base station and the terminal, so that the interaction process between the base station and the terminal is reduced, the signaling resource is saved, and the utilization rate of the transmission resource of the PDCCH is improved.

A specific application flow of decoding the PDSCH according to the redundant information in the embodiment of the present invention is illustrated as follows:

the process comprises the following steps: (1) as shown in fig. 3a, the terminal receives the PDCCH, and knows necessary information required for PDSCH reception, such as modulation and coding scheme MCS, resource allocation RA, etc., according to the DCI of the PDCCH.

(2) As shown in fig. 3b, a starting symbol position and an ending symbol position of the PDSCH are determined and the PDSCH is received. Wherein, the starting symbol position and the ending symbol position of the PDSCH can be determined by one or several of the following ways:

1. semi-static signaling configuration, such as RRC signaling;

2. default starting and ending positions;

3. the notification is carried by common control signaling, such as CFI information carried by PCFICH channel in LTE;

4. the UE-specific physical layer control signaling is used to inform the UE that the UE may detect the PDCCH of the 5G NR to obtain the starting and/or ending position of PDSCH reception.

Decoding the PDSCH according to the information obtained in the steps (1) and (2), and if the decoding is successful, ending the receiving; and (4) if the decoding fails, jumping to the step (3).

(3) As shown in fig. 3c, the terminal determines, according to the first preset instruction, a time-frequency position of the redundant information of the PDSCH in the time slot resource corresponding to the PDCCH, where the time-frequency position of the redundant information may be determined by one or a combination of the following manners:

1. semi-static signaling, such as RRC signaling;

2. determined by UE-specific physical layer control signaling, as may be known in 5G NR by detecting the PDCCH of the 5G NR.

(4) The terminal merges the redundant information into the PDSCH and decodes it.

According to the data transmission method, when the terminal fails to decode the PDSCH, the base station does not need to initiate new retransmission again, the PDSCH can be recovered by using the redundant information in the time slot resource corresponding to the PDCCH, the interaction process of the base station and the terminal is saved, the resource is saved, and the time delay is reduced.

As shown in fig. 5, an embodiment of the present invention further provides a base station 500, including:

the transmission module 501 is configured to transmit the redundant information of the PDCCH and the PDSCH to the terminal through the time slot resource corresponding to the PDCCH.

As shown in fig. 6, in the base station according to the embodiment of the present invention, the transmission module 501 includes:

the selecting submodule 5011 is configured to select, from the time slot resources corresponding to the PDCCH, a target resource that is not occupied by the PDCCH;

a transmission submodule 5012, configured to transmit the redundant information of the PDSCH in the target resource.

The base station of the embodiment of the invention further comprises:

a first sending module 502, configured to notify the terminal of a time-frequency position of the redundant information in the time slot resource through a first preset signaling.

In the base station of the embodiment of the present invention, the first preset signaling includes a semi-static signaling and/or a dynamic signaling.

The base station of the embodiment of the invention further comprises:

a second sending module 503, configured to send a second preset signaling to the terminal, where the second preset signaling is used to indicate whether a timeslot resource corresponding to the PDCCH carries redundant information of the PDSCH.

In the base station of the embodiment of the present invention, the second preset signaling includes a semi-static signaling and/or a dynamic signaling.

In the base station of the embodiment of the present invention, the dynamic signaling includes: and the PDCCH carries downlink control information DCI, and the semi-static signaling comprises high-level signaling.

In the base station of the embodiment of the present invention, the transmission module 501 is configured to transmit the redundant information to a terminal by using a transmission mode and a demodulation reference signal that are the same as those of the PDCCH; or the redundant information is transmitted to a terminal by adopting the same transmission mode and demodulation reference signal as the PDSCH.

According to the base station provided by the embodiment of the invention, the redundant information of the PDCCH and the PDSCH is transmitted to the terminal through the time slot resource corresponding to the PDCCH, so that the terminal does not need to acquire the redundant information through a retransmission process, the interaction process between the base station and the terminal is reduced, the signaling resource is saved, and the utilization rate of the transmission resource of the PDCCH is improved.

It should be noted that the base station in the embodiment of the present invention is a base station corresponding to the method, and all implementation manners in the embodiment of the method are applicable to the embodiment of the base station, and can achieve the same effect.

In order to better achieve the above object, as shown in fig. 7, an embodiment of the present invention further provides a base station, which includes a first memory 720, a first processor 700, a first transceiver 710, a bus interface, and a computer program stored on the first memory 720 and operable on the first processor 700, where the first processor 700 is configured to read the program in the first memory 720 and execute the following processes:

Where in fig. 7 the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by the first processor 700 and various circuits of the memory represented by the first memory 720 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The first transceiver 710 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The first processor 700 is responsible for managing the bus architecture and general processing, and the first memory 720 may store data used by the first processor 700 when performing operations.

The first processor 700 is further configured to select, from the time slot resources corresponding to the PDCCH, a target resource that is not occupied by the PDCCH; transmitting the redundant information of the PDSCH in the target resource.

The first processor 700 is further configured to notify the terminal of a time-frequency position of the redundant information in the timeslot resource through a first preset signaling.

The first processor 700 is further configured to send a second preset signaling to the terminal, where the second preset signaling is used to indicate whether a timeslot resource corresponding to the PDCCH carries redundant information of the PDSCH.

The first processor 700 is further configured to transmit the redundant information to a terminal using the same transmission mode and demodulation reference signal as the PDCCH; or transmitting the redundant information to a terminal by adopting the same transmission mode and demodulation reference signal as the PDSCH.

In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:

As shown in fig. 8, an embodiment of the present invention further provides a terminal 800, including:

an obtaining module 801, configured to obtain redundant information of a physical downlink shared channel PDSCH in a time slot resource corresponding to a physical downlink control channel PDCCH;

a decoding module 802, configured to decode the PDSCH according to the redundant information.

In the terminal according to the embodiment of the present invention, the obtaining module 801 includes:

the receiving submodule 8011 is configured to receive a second preset signaling sent by the base station, where the second preset signaling is used to indicate whether a timeslot resource corresponding to a physical downlink control channel PDCCH carries redundant information of a PDSCH;

an obtaining sub-module 8012, configured to, if the second preset signaling indicates that the timeslot resource corresponding to the PDCCH carries redundant information of the PDSCH, obtain the redundant information in the timeslot resource according to a first preset instruction, where the first preset instruction is used to notify a terminal of a time-frequency position of the redundant information in the timeslot resource.

As shown in fig. 9, in the terminal according to the embodiment of the present invention, the decoding module 802 includes:

a first decoding submodule 8021, configured to decode the PDSCH according to the downlink control information DCI in the PDCCH, the location information of the PDSCH, and the redundant information.

In the terminal of the embodiment of the present invention, the decoding module 803 includes:

a second decoding submodule 8022, configured to decode the PDSCH according to the downlink control information DCI in the PDCCH and the location information of the PDSCH;

a re-decoding module 8023, configured to, if the second decoding sub-module fails to decode, re-decode the PDSCH according to the redundant information.

In the terminal of the embodiment of the present invention, the location information of the PDSCH is obtained through a semi-static signaling, preset starting location and ending location information, a common control signaling and/or a dedicated physical layer control signaling of the terminal.

In the terminal of the embodiment of the present invention, the first preset instruction includes a semi-static signaling and/or a dynamic signaling; the second preset signaling comprises: semi-static signaling and/or dynamic signaling.

In the terminal of the embodiment of the present invention, the dynamic signaling includes: PDCCH, the semi-static signaling comprises high-layer signaling.

The terminal of the embodiment of the invention receives a second preset signaling sent by a base station, wherein the second preset signaling is used for indicating whether a time slot resource corresponding to a Physical Downlink Control Channel (PDCCH) bears redundant information of the PDSCH or not; if the second preset signaling indicates that the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH, acquiring the redundant information in the time slot resource according to a first preset instruction, wherein the first preset instruction is used for informing a terminal of the time-frequency position of the redundant information in the time slot resource; and decoding the PDSCH according to the redundant information. In the embodiment of the invention, the terminal acquires the redundant information in the time slot resource corresponding to the PDCCH without acquiring the redundant information through the retransmission process between the base station and the terminal, so that the interaction process between the base station and the terminal is reduced, the signaling resource is saved, and the utilization rate of the transmission resource of the PDCCH is improved.

It should be noted that the terminal according to the embodiment of the present invention is a terminal corresponding to the method, and all implementation manners in the embodiment of the method are applicable to the embodiment of the terminal, and the same effect can be achieved.

In some embodiments of the present invention, referring to fig. 10, there is further provided a terminal, including a second memory 1020, a second processor 1000, a second transceiver 1010, a user interface 1030, a bus interface, and a computer program stored on the second memory 1020 and operable on the second processor 1000, wherein the second processor 1000 is configured to read the program in the second memory 1020 and execute the following processes:

and decoding the PDSCH according to the redundant information.

Where in fig. 10 the bus architecture may include any number of interconnected buses and bridges, in particular one or more processors represented by the second processor 1000 and various circuits of the memory represented by the second memory 1020 linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The second transceiver 1010 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 1030 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The second processor 1000 is responsible for managing the bus architecture and general processing, and the second memory 1020 may store data used by the second processor 1000 when performing operations.

The second processor 1000 is further configured to receive a second preset signaling sent by the base station, where the second preset signaling is used to indicate whether a time slot resource corresponding to a physical downlink control channel PDCCH carries redundant information of a PDSCH; if the second preset signaling indicates that the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH, the redundant information is acquired in the time slot resource according to a first preset instruction, and the first preset instruction is used for informing a terminal of the time frequency position of the redundant information in the time slot resource.

The second processor 1000 is further configured to decode the PDSCH according to the downlink control information DCI in the PDCCH, the location information of the PDSCH, and the redundant information.

The second processor 1000 is further configured to decode the PDSCH according to the downlink control information DCI in the PDCCH and the location information of the PDSCH; and if the decoding fails, decoding the PDSCH again according to the redundant information.

Optionally, the location information of the PDSCH is obtained through semi-static signaling, preset starting location and ending location information, common control signaling, and/or terminal-specific physical layer control signaling.

Optionally, the first preset instruction includes semi-static signaling and/or dynamic signaling; the second preset signaling comprises: semi-static signaling and/or dynamic signaling.

Optionally, the dynamic signaling includes: PDCCH, the semi-static signaling comprises high-layer signaling.

receiving a second preset signaling sent by a base station, wherein the second preset signaling is used for indicating whether the time slot resource corresponding to a Physical Downlink Control Channel (PDCCH) bears redundant information of the PDSCH or not;

if the second preset signaling indicates that the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH, acquiring the redundant information in the time slot resource according to a first preset instruction, wherein the first preset instruction is used for informing a terminal of the time-frequency position of the redundant information in the time slot resource;

and decoding the PDSCH according to the redundant information.

An embodiment of the present invention further provides a terminal, where a terminal 1100 shown in fig. 11 includes: at least one processor 1101, memory 1102, at least one network interface 1104, and other user interfaces 1103. The various components in terminal 1100 are coupled together by a bus system 1105. It is understood that the bus system 1105 is used to enable communications among the components. The bus system 1105 includes a power bus, a control bus, and a status signal bus in addition to a data bus. For clarity of illustration, however, the various buses are labeled in fig. 11 as the bus system 1105.

The user interface 1103 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.

It is to be understood that the memory 1102 in embodiments of the present invention can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double data rate Synchronous Dynamic random access memory (ddr DRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 1102 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 1102 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 11021 and application programs 11022.

The operating system 11021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 11022 contains various applications such as a Media Player (Media Player), a Browser (Browser), etc. for implementing various application services. Programs that implement methods in accordance with embodiments of the invention may be included in application 11022.

In an embodiment of the present invention, by calling a program or an instruction stored in the memory 1102, specifically, a program or an instruction stored in the application 11022, the processor 1101 is configured to obtain redundant information of a physical downlink shared channel PDSCH in a timeslot resource corresponding to a physical downlink control channel PDCCH; and decoding the PDSCH according to the redundant information.

Optionally, the processor 1101 is further configured to: receiving a second preset signaling sent by a base station, wherein the second preset signaling is used for indicating whether the time slot resource corresponding to a Physical Downlink Control Channel (PDCCH) bears redundant information of the PDSCH or not; if the second preset signaling indicates that the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH, the redundant information is acquired in the time slot resource according to a first preset instruction, and the first preset instruction is used for informing a terminal of the time frequency position of the redundant information in the time slot resource.

Optionally, the processor 1101 is further configured to: and decoding the PDSCH according to the downlink control information DCI in the PDCCH, the position information of the PDSCH and the redundant information.

Optionally, the processor 1101 is further configured to: decoding the PDSCH according to the downlink control information DCI in the PDCCH and the position information of the PDSCH; and if the decoding fails, decoding the PDSCH again according to the redundant information.

In the terminal 1100 of the embodiment of the present invention, the processor 1101 is configured to receive a second preset signaling sent by a base station, where the second preset signaling is used to indicate whether a time slot resource corresponding to a physical downlink control channel PDCCH carries redundant information of a PDSCH; if the second preset signaling indicates that the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH, acquiring the redundant information in the time slot resource according to a first preset instruction, wherein the first preset instruction is used for informing a terminal of the time-frequency position of the redundant information in the time slot resource; and decoding the PDSCH according to the redundant information. In the embodiment of the invention, the terminal acquires the redundant information in the time slot resource corresponding to the PDCCH without acquiring the redundant information through the retransmission process between the base station and the terminal, so that the interaction process between the base station and the terminal is reduced, the signaling resource is saved, and the utilization rate of the transmission resource of the PDCCH is improved.

The terminal of the present invention may be a mobile phone, a tablet computer, a Personal Digital Assistant (PDA), or a vehicle-mounted computer.

The terminal 1100 is capable of implementing each process implemented by the terminal in the foregoing embodiments, and is not described here again to avoid repetition.

The methods disclosed in the embodiments of the present invention may be implemented in the processor 1101 or implemented by the processor 1101. The processor 1101 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by instructions in the form of hardware, integrated logic circuits, or software in the processor 1101. The Processor 1101 may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 1102, and the processor 1101 reads the information in the memory 1102 and completes the steps of the above method in combination with the hardware thereof.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.

For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

As shown in fig. 12, an embodiment of the present invention further provides a terminal 1200. The terminal 1200 shown in fig. 12 includes a Radio Frequency (RF) circuit 1210, a memory 1220, an input unit 1230, a display unit 1240, a processor 1260, an audio circuit 1270, a wifi (wireless fidelity) module 1280, and a power supply 1290.

The input unit 1230 may be used, among other things, to receive numeric or character information input by a user and to generate signal inputs related to user settings and function control of the terminal 1200. Specifically, in the embodiment of the present invention, the input unit 1230 may include a touch panel 1231. The touch panel 1231, also referred to as a touch screen, can collect touch operations of a user (e.g., operations of the user on the touch panel 1231 by using a finger, a stylus pen, or any other suitable object or accessory) thereon or nearby, and drive the corresponding connection device according to a preset program. Alternatively, the touch panel 1231 may include two portions, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device and converts it to touch point coordinates, which are provided to the processor 1260 and can receive commands from the processor 1260 for execution. In addition, the touch panel 1231 may be implemented by various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 1231, the input unit 1230 may also include other input devices 1232, and the other input devices 1232 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and the like.

Among other things, the display unit 1240 may be used to display information input by or provided to the user and various menu interfaces of the terminal 1200. The display unit 1240 may include a display panel 1241, and optionally, the display panel 1241 may be configured in the form of an LCD or an Organic Light-Emitting Diode (OLED), or the like.

It should be noted that touch panel 1231 can overlie display panel 1241 to form a touch display screen, and when the touch display screen detects a touch operation thereon or thereabout, the touch display screen can communicate to processor 1260 to determine the type of touch event, and processor 1260 can then provide a corresponding visual output on the touch display screen based on the type of touch event.

The touch display screen comprises an application program interface display area and a common control display area. The arrangement modes of the application program interface display area and the common control display area are not limited, and can be an arrangement mode which can distinguish two display areas, such as vertical arrangement, left-right arrangement and the like. The application interface display area may be used to display an interface of an application. Each interface may contain at least one interface element such as an icon and/or widget desktop control for an application. The application interface display area may also be an empty interface that does not contain any content. The common control display area is used for displaying controls with high utilization rate, such as application icons like setting buttons, interface numbers, scroll bars, phone book icons and the like.

Wherein the processor 1260 is a control center of the terminal 1200, connects various parts of the entire handset using various interfaces and lines, performs various functions of the terminal 1200 and processes data by operating or executing software programs and/or modules stored in the first memory 1221 and calling data stored in the second memory 1222, thereby monitoring the terminal 1200 as a whole. Optionally, processor 1260 may include one or more processing units.

In an embodiment of the present invention, the processor 1260 is configured to obtain the redundancy information of the PDSCH in the timeslot resource corresponding to the PDCCH by calling a software program and/or a module stored in the first memory 1221 and/or data stored in the second memory 1222; and decoding the PDSCH according to the redundant information.

Optionally, processor 1260 is further configured to: receiving a second preset signaling sent by a base station, wherein the second preset signaling is used for indicating whether the time slot resource corresponding to a Physical Downlink Control Channel (PDCCH) bears redundant information of the PDSCH or not; if the second preset signaling indicates that the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH, the redundant information is acquired in the time slot resource according to a first preset instruction, and the first preset instruction is used for informing a terminal of the time frequency position of the redundant information in the time slot resource.

Optionally, processor 1260 is further configured to: and decoding the PDSCH according to the downlink control information DCI in the PDCCH, the position information of the PDSCH and the redundant information.

Optionally, processor 1260 is further configured to: decoding the PDSCH according to the downlink control information DCI in the PDCCH and the position information of the PDSCH; and if the decoding fails, decoding the PDSCH again according to the redundant information.

The terminal 1200 can implement each process implemented by the terminal in the foregoing embodiments, and details are not described here to avoid repetition.

In the terminal 1200 of the embodiment of the present invention, the processor 1260 is configured to receive a second preset signaling sent by the base station, where the second preset signaling is used to indicate whether a time slot resource corresponding to a physical downlink control channel PDCCH carries redundant information of a PDSCH; if the second preset signaling indicates that the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH, acquiring the redundant information in the time slot resource according to a first preset instruction, wherein the first preset instruction is used for informing a terminal of the time-frequency position of the redundant information in the time slot resource; and decoding the PDSCH according to the redundant information. In the embodiment of the invention, the terminal acquires the redundant information in the time slot resource corresponding to the PDCCH without acquiring the redundant information through the retransmission process between the base station and the terminal, so that the interaction process between the base station and the terminal is reduced, the signaling resource is saved, and the utilization rate of the transmission resource of the PDCCH is improved.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by controlling the relevant hardware through a computer program, and the program can be stored in a computer-readable storage medium, and when executed, the program can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A data transmission method applied to a base station is characterized by comprising the following steps:

and transmitting the redundant information of the physical downlink shared channel PDSCH and the PDCCH to the terminal through a time slot resource corresponding to the physical downlink control channel PDCCH.

2. The data transmission method according to claim 1, wherein the step of transmitting the redundant information of the physical downlink shared channel PDSCH and the PDCCH to the terminal through the time slot resource corresponding to the physical downlink control channel PDCCH comprises:

selecting target resources which are not occupied by the PDCCH from time slot resources corresponding to the PDCCH;

transmitting the redundant information of the PDSCH in the target resource.

3. The data transmission method according to claim 1, wherein after the step of transmitting the redundant information of the physical downlink shared channel PDSCH and the PDCCH to the terminal through the time slot resource corresponding to the physical downlink control channel PDCCH, the method further comprises:

4. The data transmission method according to claim 3, wherein the first preset signaling comprises semi-static signaling and/or dynamic signaling.

5. The data transmission method according to claim 1, further comprising:

6. The data transmission method according to claim 5, wherein the second preset signaling comprises semi-static signaling and/or dynamic signaling.

7. The data transmission method according to claim 4 or 6, wherein the dynamic signaling comprises: and the PDCCH carries downlink control information DCI, and the semi-static signaling comprises high-level signaling.

8. The data transmission method according to claim 1, wherein the step of transmitting the redundant information of the physical downlink shared channel PDSCH and the PDCCH to the terminal through the time slot resource corresponding to the physical downlink control channel PDCCH comprises:

9. A data transmission method is applied to a terminal, and is characterized by comprising the following steps:

acquiring redundant information of a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Channel (PDSCH) in time slot resources corresponding to the PDCCH;

and decoding the PDSCH according to the redundant information.

10. The data transmission method according to claim 9, wherein the step of obtaining the redundant information of the PDSCH in the time slot resource corresponding to the PDCCH comprises:

if the second preset signaling indicates that the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH, the redundant information is acquired in the time slot resource according to a first preset instruction, and the first preset instruction is used for informing a terminal of the time frequency position of the redundant information in the time slot resource.

11. The data transmission method of claim 9, wherein the step of decoding the PDSCH according to the redundant information comprises:

12. The data transmission method of claim 9, wherein the step of decoding the PDSCH according to the redundant information comprises:

decoding the PDSCH according to the downlink control information DCI in the PDCCH and the position information of the PDSCH;

and if the decoding fails, decoding the PDSCH again according to the redundant information.

13. The data transmission method according to claim 11 or 12, wherein the location information of the PDSCH is obtained by semi-static signaling, preset starting location and ending location information, common control signaling and/or terminal-specific physical layer control signaling.

14. The data transmission method according to claim 10, wherein the first preset instruction comprises semi-static signaling and/or dynamic signaling; the second preset signaling comprises: semi-static signaling and/or dynamic signaling.

15. The data transmission method of claim 14, wherein the dynamic signaling comprises: PDCCH, the semi-static signaling comprises high-layer signaling.

16. A base station, comprising:

and the transmission module is used for transmitting the redundant information of the physical downlink shared channel PDSCH and the PDCCH to the terminal through the time slot resource corresponding to the physical downlink control channel PDCCH.

17. The base station of claim 16, wherein the transmission module comprises:

the selection submodule is used for selecting target resources which are not occupied by the PDCCH from time slot resources corresponding to the PDCCH;

a transmission sub-module, configured to transmit the redundant information of the PDSCH in the target resource.

18. The base station of claim 16, further comprising:

and the first sending module is used for notifying the terminal of the time-frequency position of the redundant information in the time slot resource through a first preset signaling.

19. The base station according to claim 18, wherein the first predetermined signaling comprises semi-static signaling and/or dynamic signaling.

20. The base station of claim 16, further comprising:

and the second sending module is used for sending a second preset signaling to the terminal, wherein the second preset signaling is used for indicating whether the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH or not.

21. The base station according to claim 20, wherein said second predetermined signaling comprises semi-static signaling and/or dynamic signaling.

22. The base station according to claim 19 or 21, wherein the dynamic signaling comprises: and the PDCCH carries downlink control information DCI, and the semi-static signaling comprises high-level signaling.

23. The base station of claim 16, wherein the transmission module is configured to transmit the redundant information to a terminal using a same transmission mode and demodulation reference signal as the PDCCH; or the redundant information is transmitted to a terminal by adopting the same transmission mode and demodulation reference signal as the PDSCH.

24. A terminal, comprising:

the device comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring redundant information of a Physical Downlink Control Channel (PDCCH) and a Physical Downlink Shared Channel (PDSCH) in time slot resources corresponding to the PDCCH;

25. The terminal of claim 24, wherein the obtaining module comprises:

the receiving submodule is used for receiving a second preset signaling sent by the base station, and the second preset signaling is used for indicating whether the time slot resource corresponding to the physical downlink control channel PDCCH bears redundant information of the PDSCH or not;

and the obtaining submodule is used for obtaining the redundant information in the time slot resource according to a first preset instruction if the second preset signaling indicates that the time slot resource corresponding to the PDCCH bears the redundant information of the PDSCH, wherein the first preset instruction is used for informing a terminal of the time-frequency position of the redundant information in the time slot resource.

26. The terminal of claim 25, wherein the decoding module comprises:

and the first decoding submodule is used for decoding the PDSCH according to the downlink control information DCI in the PDCCH, the position information of the PDSCH and the redundant information.

27. The terminal of claim 25, wherein the decoding module comprises:

the second decoding submodule decodes the PDSCH according to the downlink control information DCI in the PDCCH and the position information of the PDSCH;

and a re-decoding module, configured to re-decode the PDSCH according to the redundant information if the second decoding sub-module fails to decode.

28. The terminal according to claim 26 or 27, wherein the location information of the PDSCH is obtained by semi-static signaling, preset starting location and ending location information, common control signaling and/or terminal-specific physical layer control signaling.

29. The terminal according to claim 25, wherein the first preset instruction comprises semi-static signaling and/or dynamic signaling; the second preset signaling comprises: semi-static signaling and/or dynamic signaling.

30. The terminal of claim 29, wherein the dynamic signaling comprises: PDCCH, the semi-static signaling comprises high-layer signaling.