WO2018202194A1

WO2018202194A1 - Information transmission method and device

Info

Publication number: WO2018202194A1
Application number: PCT/CN2018/085795
Authority: WO
Inventors: 石靖; 夏树强; 左志松; 陈冬雷
Original assignee: 中兴通讯股份有限公司
Priority date: 2017-05-05
Filing date: 2018-05-07
Publication date: 2018-11-08
Also published as: CN108811150B; CN108811150A

Abstract

Disclosed are an information transmission method and device. The method comprises: transmitting control information using a downlink traffic channel, wherein the control information comprises at least one of: downlink control information and feedback information of an uplink traffic channel.

Description

Information transmission method and device

Technical field

The present disclosure relates to information transmission technologies, for example, to an information transmission method and apparatus.

Background technique

With the improvement of the commercialization of the 4th Generation mobile communication technology (4G) Long-Term Evolution (LTE)/Long-Term Evolution Advance (LTE-A) system, The next-generation mobile communication technology, the 5th Generation mobile communication technology (5G), has higher and higher technical specifications.

It is widely believed in the industry that next-generation mobile communication systems should have features such as ultra-high speed, ultra-high capacity, ultra-high reliability, and ultra-low-latency transmission characteristics. However, how to effectively transmit downlink control information (DCI) and feedback information of an uplink traffic channel is a problem to be solved.

Summary of the invention

To solve the above technical problem, an embodiment of the present application provides an information transmission method and apparatus.

The information transmission method provided by the embodiment of the present application includes:

Transmitting control information by using a downlink traffic channel, where the control information includes at least one of the following:

Downlink control information and feedback information of the uplink traffic channel.

The information transmission device provided by the embodiment of the present application includes:

And a transmission unit, configured to transmit control information by using a downlink traffic channel, where the control information includes at least one of the following:

The embodiment of the present application provides a storage medium, where the storage medium includes a stored program, where the device where the storage medium is located is controlled to execute the information transmission method described above when the program is running.

The information transmission method and device of the embodiment of the present invention transmits control information through a downlink traffic channel, where the control information includes at least one of the following information: downlink control information, and feedback information of an uplink traffic channel. The information transmission method and device of the embodiment of the present invention can implement downlink control information and feedback information of an uplink traffic channel through a downlink traffic channel, and carry downlink control information and feedback information of an uplink traffic channel by selecting different resource locations in the downlink traffic channel. Therefore, the control information can be quickly demodulated, and the performance requirement of the downlink control information is ensured, and the introduction of an additional downlink channel is avoided, the control overhead is saved, and the spectrum efficiency of the system is improved.

BRIEF abstract

1 is a schematic flowchart of an information transmission method according to an embodiment of the present application;

2 is a schematic diagram of different control information in the same symbol according to an embodiment of the present application;

3 is a schematic diagram of different control information in the same symbol according to another embodiment of the present application;

4 is a schematic diagram of different control information in the same symbol according to still another embodiment of the present application;

FIG. 5 is a schematic diagram of different control information in different symbols according to an embodiment of the present application; FIG.

6 is a schematic diagram of different control information in different symbols according to another embodiment of the present application;

FIG. 7 is a schematic diagram of different control information in different symbols according to still another embodiment of the present application; FIG.

FIG. 8 is a schematic diagram of control information located on a PDSCH according to an embodiment of the present application; FIG.

FIG. 9 is a schematic diagram of control information located on a PDSCH according to another embodiment of the present application; FIG.

FIG. 10 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present application.

detailed description

Currently, for the scheduling scheme of the 5G system, one candidate scheme uses two levels of downlink control information. In the two-level DCI, the content of the first-level DCI includes information directly related to the demodulation traffic channel, such as resource allocation, modulation and coding, and the like; and the content of the second-level DCI includes information that is not directly related to the demodulation traffic channel. Such as feedback Acknowledgement (ACK) / Negation (Non Acknowledgement (NACK) resource indication, power control, and so on. In addition, for 5G systems, there is also a need to transmit feedback ACK/NACK information for the uplink traffic channel in a particular channel.

1 is a schematic flowchart of an information transmission method according to an embodiment of the present application. As shown in FIG. 1, the information transmission method includes the following steps:

Step 101: Transmit control information by using a downlink traffic channel, where the control information includes at least one of: downlink control information and feedback information of an uplink traffic channel.

In the embodiment of the present application, the resource occupation manner of the control information in the downlink traffic channel is mode one and mode two.

Manner 1: The different types of information in the control information are located in the same symbol in the downlink traffic channel, where the control information is located in a first symbol of the downlink traffic channel or from a first symbol of the downlink traffic channel Start to occupy.

Manner 2: Different types of information in the control information are located in different symbols in the downlink traffic channel.

The above manners 1 and 2 are respectively described below.

For mode 1, the downlink traffic channel carries a Demodulation Reference Signal (DMRS). If the control information includes the downlink control information and the feedback information of the uplink traffic channel, the control information is located in the first symbol of the downlink traffic channel or is occupied by the first symbol of the downlink traffic channel, and includes:

The feedback information of the uplink traffic channel is located at least on both sides of the DMRS in the first symbol of the downlink traffic channel, and the downlink control information is located on both sides of the feedback information of the uplink traffic channel, where the DMRS is located at the The first symbol of the downlink traffic channel, or the first symbol of the downlink traffic channel and the symbol after the first symbol; or

The feedback information of the uplink traffic channel is located at the same location as the frequency domain of the DMRS, the downlink control information is located on both sides of the feedback information of the uplink traffic channel, and the DMRS is located on the downlink traffic channel. On the first symbol; or,

The feedback information of the uplink traffic channel is located in the first symbol of the downlink traffic channel and is sequentially occupied from a resource element (Resource Element, RE) having the lowest or highest frequency domain, and the downlink control information is from the uplink traffic channel. The feedback information is then sequentially occupied, wherein the resource in which the demodulation reference signal is located is not occupied if the demodulation reference signal is encountered.

If the control information includes the downlink control information, the control information is located at the first symbol of the downlink traffic channel or is occupied by the first symbol of the downlink traffic channel, and includes:

The downlink control information is located at least on the two sides of the DMRS in the first symbol of the downlink traffic channel, where the DMRS is located in the first symbol of the downlink traffic channel, or the DMRS is located at the beginning of the downlink traffic channel. Symbols and symbols after the first symbol; or,

The downlink control information is located in the first symbol of the downlink traffic channel and is sequentially occupied from the lowest or highest frequency domain of the frequency domain, wherein the resource in which the demodulation reference signal is located is not occupied if the demodulation reference signal is encountered.

For the second mode, the downlink traffic channel carries the DMRS; the different types of information in the control information are located in different symbols in the downlink traffic channel, including:

The downlink control information is located in the first symbol of the downlink traffic channel or is occupied by the first symbol of the downlink traffic channel, and the feedback information of the uplink traffic channel is located after the first symbol of the downlink traffic channel. And located at the same location as the frequency domain of the DMRS; or,

The downlink control information is located in the first symbol of the downlink traffic channel, or is occupied from the first symbol of the downlink traffic channel, and the feedback information of the uplink traffic channel is located at least in the DMRS of the symbol that first includes the DMRS. On both sides, the DMRS is located after the first symbol of the downlink traffic channel; or

The downlink control information and the feedback information of the uplink traffic channel are sequentially occupied from the lowest or highest RE of the frequency domain of the respective symbol, wherein the demodulation reference signal is not occupied if the demodulation reference signal is encountered. Resources.

In the embodiment of the present application, when the downlink traffic channel is transmitted by using multiple layers or multiple codewords, the transmission manner of the control information includes at least one of the following: the control information is transmitted by using a single layer, where the control information is used. The port used is one of the ports used by the downlink traffic channel; or,

The control information is transmitted by using a single codeword, and the codeword used by the information is determined to be a codeword having a highest modulation and coding scheme (MCS) among the plurality of codewords, and the control information is used. Fixed modulation method; or,

The control information is transmitted by using multiple layers or multiple codewords, where the control information includes the downlink control information and does not include feedback information of the uplink traffic channel, and is transmitted through each layer or each codeword. Part of the downlink control information; or

The control information is transmitted using multiple layers or multiple codewords, wherein the control information transmits the same information on all layers or all codewords; or

The control information is transmitted using multiple layers or multiple codewords, wherein the control information and the downlink data are transmitted using different layers or different codewords, respectively.

In an embodiment, the port used by the control information is one of the ports used by the downlink traffic channel, and the port used by the control information is the smallest one of the plurality of ports used by the downlink traffic channel. port.

In an embodiment, the transmitting, by using each layer, the information about the downlink control information includes: carrying different subtype information in the downlink control information in different layers for transmission.

The subtype information includes at least one of the following: Hybird Automatic Repeat Reques (HARQ) information, timing information, power control information, and resource indication information of an uplink control channel.

In an embodiment, the HARQ information includes: a New Data Indicator (NDI), an MCS, a Redundancy Version (RV), and a process number. The timing information includes: symbol level timing information, and sub-frame/slot/mini-slot level timing slots.

In the embodiment of the present application, the feedback information of the uplink service channel further includes: a HARQ process ID.

In the embodiment of the present application, the downlink traffic channel carries the HARQ; where, if the control information includes the feedback information of the uplink traffic channel, the control information is located at the resource location of the downlink traffic channel, including:

The feedback information of the uplink traffic channel is located at least on both sides of the DMRS in the first symbol, where the DMRS is located on the first symbol of the downlink traffic channel region or the first symbol of the DMRS is located in the downlink traffic channel And the symbol after the first symbol; or,

The feedback information of the uplink traffic channel is located in the first symbol of the downlink traffic channel and is sequentially occupied from the lowest or highest frequency domain of the frequency domain, where the demodulation reference signal is not occupied if the demodulation reference signal is encountered. Resources; or,

The feedback information of the uplink traffic channel is located at the same location as the frequency domain in which the DMRS is located.

Here, for the Enhanced Mobile Broadband (eMBB) service, the HARQ-ACK information and the HARQ process ID are transmitted as the same type of control information. For the Ultra-Reliable and Low Latency Communications (URLLC) service, the HARQ-ACK information carries the process number information that is smaller than the maximum number of processes of the eMBB.

In the embodiment of the present application, when the second-level downlink control information has different sub-type information, the resource occupation manners of different sub-type information include:

Different subtype information occupies different locations in the same symbol; or, different subtype information occupies different symbols.

In the above solution, the downlink control information is the second-level downlink control information, and the feedback information of the uplink traffic channel is the HARQ feedback information of the uplink traffic channel (for example, HARQ-ACK information).

The information transmission method of the embodiment of the present application is described in detail below with reference to application examples. In an embodiment, the second level of DCI and HARQ-ACK information may be referred to as control information.

In this embodiment, the control information is transmitted through the downlink traffic channel, where the downlink traffic channel refers to a Physical Downlink Shared Channel (PDSCH). The control information includes at least one of: downlink control information and feedback information of an uplink traffic channel. The downlink control information refers to the second-level DCI, and the uplink traffic channel refers to a physical uplink shared channel (PUSCH), and the feedback information of the uplink traffic channel refers to ACK/NACK information fed back to the PUSCH.

The base station scheduling terminal (User Equipment, UE) transmits downlink data, and adopts two levels of DCI, wherein the second level DCI is located in the PDSCH. At the same time, in the slot #n, the PUSCH feedback ACK/NACK information (ie, HARQ-ACK information) of the UE A in the slot #n-k is carried. At this time, the two kinds of information occupy resources in the PDSCH as shown in FIG. 2. The control information (including the second level DCI and HARQ-ACK information) is located at the first symbol of the PDSCH or is occupied from the first symbol of the PDSCH. At this time, the DMRS is located at the first symbol of the PDSCH. At this time, the HARQ-ACK is located on both sides of the DMRS, and the second-level DCI (ie, Stage-2 DCI) is located on both sides of the HARQ-ACK. Occupied from the lowest frequency domain of the first symbol of the PDSCH. At this time, the number of occupied HARQ-ACKs is X, and the value of X may be fixed, or determined according to the MCS of the PDSCH and the resource usage offset parameter of the upper layer configuration. For example, the HARQ-ACK information is 1 bit, and 1/12 code channel coding and Binary Phase Shift Keying (BPSK) modulation occupy X=12 REs. The number of REs occupied by the second-level DCI is Y, and the value of Y may be fixed, or the second-level DCI may occupy different numbers of Y according to different number of bits (eg, B1, B2, B3, and B4 represent 4 different bit numbers). RE (eg, Y1, Y2, Y3, and Y4 represent 4 different values), or determined according to the MCS of the PDSCH and the resource usage offset parameter of the upper layer configuration. For example, B3=60 bits, using 1/3 bit rate channel coding and Quadrature Phase Shift Keying (QPSK) modulation occupy Y3=90 REs. The number of bits of the second level DCI may be fixed or indicated by the first level or blindly checked.

In an embodiment, the second-level DCI is independently coded, and a Physical Downlink Control Channel (PDCCH) coding mode is used. For example, using a separate Cyclic Redundancy Check (CRC), the CRC length is the same as the CRC length used by the PDCCH, or different CRC lengths are selected according to the number of bits of the second-level DCI (hereinafter referred to as DCI size). The CRC is not used when the small DCI size is used. In another embodiment, non-independent encoding is employed for the second level of DCI, encoded with the PDSCH. For example, when the URL is LCLC, the target block error rate (BLER) of the PDSCH and the PDCCH are both 99.9%. The PDSCH matches the second level DCI rate.

In an embodiment, independent encoding is employed for HARQ-ACK, or sequence transmission is employed. The HARQ-ACK punctured the corresponding RE of the PDSCH at a fixed location. The position of the Y RE resources occupied by the second-level DCI is unchanged, that is, the Y RE resources are occupied by the two sides of the X RE resources on both sides of the DMRS, that is, when there is no HARQ-ACK information, The PDSCH resource occupies X REs on both sides of the DMRS and is not punctured.

When receiving the PDSCH channel, the terminal simultaneously receives the second-level DCI and the previously transmitted PUSCH feedback information at the determined resource location.

In an embodiment, different types of information in the control information are located in the same symbol in the downlink traffic channel or in different symbols in the downlink traffic channel. Other ways of occupying resources in this embodiment are shown in FIGS. 3 to 7. 2 to 4 show that different types of control information are located in the same Orthogonal Frequency Division Multiplexing (OFDM) symbol, and FIG. 5 to FIG. 7 are different types of control information located in different OFDM symbols.

FIG. 3 is a schematic diagram of two different control information provided by an embodiment in the same symbol. As shown in FIG. 3, the HARQ-ACK is located in the frequency domain of the DMRS, and the second-level DCI is located on both sides of the HARQ-ACK. At this time, the DMRS is not on the first symbol of the PDSCH (that is, on the non-first symbol of the PDSCH). At this time, the control information is occupied from the lowest frequency domain of the first symbol of the PDSCH, the number of REs occupied by the HARQ-ACK is X, and the number of REs occupied by the second-level DCI is Y. X and Y have the same values as above.

FIG. 4 is a three schematic diagram of different control information provided by another embodiment in the same symbol. As shown in FIG. 4, the HARQ-ACK is located in front of the first symbol X REs (if there is a DMRS, X is the number after the pilot RE is deducted, that is, the symbol of the DMRS may be the first symbol in the PDSCH or the first one. Symbol), the second-level DCI is occupied from the X+1th symbol, occupying Y REs. X and Y have the same values as above.

In an embodiment, the distinguishing symbols are placed with different types of control information as shown in Figures 5-7. In addition to quickly demodulating control information, different delay requirements can be differentiated for different types of control information. Ensure different performance requirements for different control information. The following figure 5 to FIG. 7 treats the second-level DCI with a preferred delay, and the sub-optimal delay processes the HARQ-ACK as an example, that is, the symbol position of the HARQ-ACK is located after the symbol position of the second-level DCI. In another embodiment, the HARQ-ACK may be processed by a delay, and the second-level DCI is processed by the sub-optimal delay, that is, the symbol position of the second-level DCI is located after the symbol position where the HARQ-ACK is located.

FIG. 5 is a schematic diagram of three different control information provided by different embodiments in different symbols. As shown in FIG. 5, it is preferable to process the second-level DCI and the sub-optimal delay to process the HARQ-ACK. The HARQ-ACK is located in the same frequency domain position of the DMRS. At this time, the second-level DCI is occupied from the lowest frequency domain of the PDSCH, the number of HARs occupied by the HARQ-ACK is X, and the number of REs occupied by the second-level DCI is Y. X and Y have the same values as above. That is, the symbol of the DMRS at this time may be the first symbol or the first symbol in the PDSCH.

FIG. 6 is two schematic diagrams of different control information provided by another embodiment in different symbols. As shown in FIG. 6, it is preferable to process the second level DCI and suboptimally process the HARQ-ACK. The HARQ-ACK is located on both sides of the DMRS. At this time, the second-level DCI is occupied from the lowest frequency domain of the PDSCH, the number of REs occupied by the HARQ-ACK is X, and the number of REs occupied by the second-level DCI is Y. X and Y have the same values as above. At this time, the DMRS is not on the first symbol of the PDSCH.

FIG. 7 is a schematic diagram showing four different schematic information of different control information provided by another embodiment. As shown in FIG. 7, it is preferable to process the second-level DCI and suboptimally process the HARQ-ACK. Occupied from the lowest RE of the respective symbol frequency domain. The HARQ-ACK is located in front of the X REs of the symbol (if there is DMRS, X is the number after the pilot RE is deducted), and the second-level DCI is located in front of the symbol Y (if there is DMRS, Y is deducted from the pilot RE) After the number). The number of REs occupied by the HARQ-ACK is X, and the number of REs occupied by the second-level DCI is Y. X and Y have the same values as above. That is, the symbol of the DMRS at this time may be the first symbol or the first symbol in the PDSCH.

The information transmission method of the present embodiment can implement downlink control information by using a downlink traffic channel, and different types of downlink control information are carried by different resource locations in the downlink traffic channel, so that the control information can be quickly demodulated or Different types of control information distinguish different delay requirements, and ensure the performance requirements of different types of downlink control information, avoid introducing additional downlink channels, save control overhead, and improve system spectrum efficiency.

In this embodiment, the control information is transmitted through the downlink traffic channel, where the control information includes at least one of the following: the downlink control information and the feedback information of the uplink traffic channel. The downlink control information refers to the second-level DCI, and the feedback information of the uplink traffic channel refers to the ACK/NACK information fed back to the PUSCH.

The base station schedules the UE to transmit downlink data, and adopts two levels of DCI, wherein the second level DCI is located in the downlink traffic channel PDSCH. FIG. 8 is a schematic diagram of three types of control information provided by an embodiment on a PDSCH. The second-level DCI occupies resources in the PDSCH as shown in FIG. 8, where the second-level DCI is located in the first symbol of the PDSCH or is occupied from the first symbol of the PDSCH. At this time, the second-level DCI is sequentially occupied or located on both sides of the DMRS from the lowest of the first symbol frequency domain of the PDSCH. at this time. The number of REs occupied by the second-level DCI is Y, and the value of Y may be fixed, or the second-level DCI may occupy different numbers of Y according to different number of bits (eg, B1, B2, B3, and B4 represent 4 different bit numbers). RE (eg, Y1, Y2, Y3, and Y4 represent 4 different values), or determined according to the MCS of the PDSCH and the resource usage offset parameter of the upper layer configuration. The number of bits of the second level DCI may be fixed or indicated by the first level or blindly checked.

In an embodiment, when the PDSCH uses multi-layer transmission, the second-level DCI uses a single layer transmission, and the port used to determine the information is one of the ports used by the PDSCH. For example, a port with the smallest index in multiple ports of the PDSCH can be used. Alternatively, the second level DCI uses multiple layers of transmission, and each layer transmits partial information of the second level DCI. For example, different subtype information can be transmitted at different layers. At this time, the second-level DCI occupancy RE is still an independent RE, and the occupied RE number is reduced. The subtype information includes at least one of the following: HARQ information (NDI+MCS+RV+process number), timing information (symbol level timing and subframe/slot/mini-slot level timing), power control information, and PUCCH resource indication information. Wait. Alternatively, the second level DCI uses multiple layers of transmission and uses separate layers for transmission with downstream data. At this time, the second-level DCI occupies the RE and the downlink data sharing, and the occupied RE number does not change.

In an embodiment, when there are two types of different subtype information, the resource occupation scheme is similar to the two information occupation resources in the foregoing embodiment. When there are more than two kinds of subtype information, distinguish more different positions in the same symbol, or more different positions in the symbol.

In an embodiment, independent coding is employed for the second level DCI, using a PDCCH coding scheme. For example, a separate CRC can be used, the CRC length is the same as the CRC length used by the PDCCH, or different CRC lengths are selected according to the DCI size, and the CRC is not used when considering a smaller DCI size; or the non-independent coding is used for the second-level DCI, and the PDSCH Coding together. For example, when the PDSCH and the PDCCH target BLER are the same at the URLLC, they are both 99.9%. The PDSCH matches the second level DCI rate.

In an embodiment, when the terminal receives the PDSCH channel, it simultaneously receives the second level DCI at the determined resource location.

The information transmission method of the present embodiment can implement downlink control information by using a downlink traffic channel, and carry downlink control information by selecting different resource locations in the downlink traffic channel, so that the control information can be quickly demodulated, and the downlink control is ensured. The performance requirements of the information avoid introducing additional downlink channels, saving control overhead and improving system spectrum efficiency. In this embodiment, the control information is transmitted through the downlink traffic channel, where the control information includes at least one of the following: the downlink control information and the feedback information of the uplink traffic channel. The downlink control information refers to the second-level DCI, the uplink traffic channel refers to the PUSCH, and the feedback information of the uplink traffic channel refers to the ACK/NACK information that is fed back to the PUSCH.

The base station schedules the UE A to transmit the downlink data, and in the slot #n, carries the ACK/NACK information that the UE A feeds back to the PUSCH in the slot #n-k. FIG. 9 is a schematic diagram of four types of control information provided by the PDSCH in another embodiment. The HARQ-ACK occupies resources in the PDSCH as shown in FIG. 9, where the HARQ-ACK is located in the first symbol or the non-first symbol of the PDSCH. At this time, the HARQ-ACK occupies resources from the first symbol or the non-first symbol of the PDSCH or is located on both sides of the DMRS or in the frequency domain where the DMRS is located. At this time, the number of occupied HARQ-ACKs is X, and the value of X may be fixed, or determined according to the MCS of the PDSCH and the resource usage offset parameter of the upper layer configuration. For a small bit (for example, 1-2 bits) HARQ-ACK information, for example, it may be a fixed physical resource block (PRB) position in the PDSCH. In an embodiment, the number of REs occupied by the DMRS in {single symbol, M PRB} is the same, where M is a positive integer greater than one or greater than one. For example, when M=1, 4RE or 6RE is occupied, at this time a fixed PRB position, such as a starting PRB, or a terminating PRB, or a center PRB. At this time, the number of REs is small. For example, when M=3, it occupies 12RE or 18RE, and the fixed PRB position at this time, for example, the starting PRB+ terminates the partial PRB of the PRB+ equal position. At this time, the number of REs is small. For large bits (such as ACK/ANCK that feeds back multiple PUSCHs at the time of CA) HARQ-ACK information, M is a positive integer greater than one.

In an embodiment, the HARQ-ACK for PUSCH includes process number information in addition to ACK/NACK information to support uplink asynchronous HARQ. In an embodiment, for eMBB, the HARQ-ACK and the HARQ process ID are transmitted as the same type of control information at this time, or may be used as two types of control information transmission similar to the two types of information in the embodiment of FIG. 1-7. Resources. In another embodiment, for the URLLC, the difference is that the process number information that is less than the maximum number of processes of the eMBB is carried to support the uplink asynchronous HARQ; or for the URLLC, the fast transmission is performed, and the HARQ-ACK is still not carried with the process number information. , transmitted in a synchronous manner.

In an embodiment, independent encoding is employed for HARQ-ACK, or sequence transmission is employed. The HARQ-ACK punctured the corresponding RE of the PDSCH at a fixed location.

When receiving the PDSCH channel, the terminal simultaneously receives the previously transmitted PUSCH feedback information at the determined resource location. FIG. 10 is a schematic structural diagram of an information transmission apparatus according to an embodiment of the present application. As shown in FIG. 10, the information transmission apparatus includes:

The transmission unit 1001 is configured to transmit control information by using a downlink traffic channel, where the control information includes at least one of the following:

In the embodiment of the present application, the device further includes: an encapsulating unit 1002, configured to carry the control information in a downlink traffic channel, where a resource occupation manner of the control information in the downlink traffic channel is:

The different types of information in the control information are located in the same symbol in the downlink traffic channel, where the control information is located in the first symbol of the downlink traffic channel or starts from the first symbol of the downlink traffic channel; or,

Different types of information in the control information are located in different symbols in the downlink traffic channel.

In the embodiment of the present application, the downlink traffic channel carries a demodulation reference signal; wherein, if the control information includes downlink control information and feedback information of an uplink traffic channel, the control information is located in the downlink traffic channel. The first symbol or the first symbol from the downlink traffic channel begins to occupy, including:

The feedback information of the uplink traffic channel is located at least on both sides of the demodulation reference signal in the first symbol of the downlink traffic channel, and the downlink control information is located on both sides of the feedback information of the uplink traffic channel, where the Demodulating a reference signal located at a first symbol of the downlink traffic channel, or the demodulation reference signal is located at a first symbol of the downlink traffic channel and a symbol following the first symbol; or

The feedback information of the uplink traffic channel is located at the same location as the frequency domain in which the demodulation reference signal is located, the downlink control information is located on both sides of the feedback information of the uplink traffic channel, and the demodulation reference signal is located at the location Said that the downlink traffic channel is not the first symbol; or,

The feedback information of the uplink traffic channel is located in the first symbol of the downlink traffic channel and is sequentially occupied from the lowest or highest resource unit in the frequency domain, and the downlink control information is sequentially occupied from the feedback information of the uplink traffic channel. Wherein, if the demodulation reference signal is encountered, the resource in which the demodulation reference signal is located is not occupied.

In this embodiment, the downlink traffic channel carries a demodulation reference signal; wherein, if the control information includes downlink control information, the control information is located in the first symbol of the downlink traffic channel or from the The first symbol of the downlink traffic channel begins to occupy, including:

The downlink control information is located at least on both sides of the demodulation reference signal in the first symbol of the downlink traffic channel, where the demodulation reference signal is located in a first symbol of the downlink traffic channel, or the demodulation reference The signal is located at a first symbol of the downlink traffic channel and a symbol following the first symbol; or

In the embodiment of the present application, the downlink traffic channel carries a demodulation reference signal; the different types of information in the control information are located in different symbols in the downlink traffic channel, including:

The downlink control information is located in the first symbol of the downlink traffic channel or is occupied by the first symbol of the downlink traffic channel, and the feedback information of the uplink traffic channel is located after the first symbol of the downlink traffic channel. And located at the same position as the frequency domain of the demodulation reference signal; or

The downlink control information is located in the first symbol of the downlink traffic channel or is occupied by the first symbol of the downlink traffic channel, and the feedback information of the uplink traffic channel is located at least in a symbol that first includes a demodulation reference signal. Demodulating two sides of the reference signal, the demodulation reference signal being located after the first symbol of the downlink traffic channel; or

The downlink control information and the feedback information of the uplink traffic channel are sequentially occupied from resource elements with the lowest or highest frequency domain of the respective symbols, wherein the demodulation reference is not occupied if the demodulation reference signal is encountered. The resource where the signal is located.

In the embodiment of the present application, when the downlink traffic channel is transmitted by using multiple layers or multiple codewords, the transmission manner of the control information includes at least one of the following:

The control information uses a single layer transmission, where the port used by the control information is one of ports used by the downlink traffic channel; or

The control information is transmitted by using a single codeword, and the codeword used by the information is determined to be a codeword having a highest modulation coding mode among the plurality of codewords, and the control information uses a fixed modulation mode; or

In the embodiment of the present application, the port used by the control information is one of the ports used by the downlink service channel, and includes:

The port used by the control information is a port with the smallest index value among the plurality of ports used by the downlink traffic channel.

In the embodiment of the present application, the part of the downlink control information is transmitted by using each layer, including:

Carrying different subtype information in the downlink control information in different layers for transmission;

The subtype information includes at least one of the following: hybrid automatic repeat request information, timing information, power control information, and resource indication information of an uplink control channel.

In the embodiment of the present application, the feedback information of the uplink service channel further includes: a hybrid automatic repeat request process number.

In the embodiment of the present application, the downlink traffic channel carries a demodulation reference signal; wherein, if the control information includes feedback information of an uplink traffic channel, the control information is located at a resource location of the downlink traffic channel, including:

The feedback information of the uplink traffic channel is located at least on both sides of the demodulation reference signal in the first symbol of the downlink traffic channel, where the demodulation reference signal is located in the first symbol of the downlink traffic channel region, or Demodulating a reference signal located at a first symbol of the downlink traffic channel and a symbol following the first symbol; or

The feedback information of the uplink traffic channel is located at the same location as the frequency domain in which the demodulation reference signal is located.

In this embodiment, when the downlink control information is the second-level downlink control information, and the second-level downlink control information has different sub-type information, the resource usage manners of the different sub-type information include:

In this embodiment, the downlink control information is the second-level downlink control information, and the feedback information of the uplink traffic channel is the hybrid automatic retransmission request feedback information of the uplink traffic channel.

It will be understood by those skilled in the art that the implementation functions of the units in the information transmission apparatus shown in FIG. 10 can be understood by referring to the related description of the foregoing information transmission method.

In practical applications, the functions implemented by each unit in the information transmission device may be a Central Processing Unit (CPU) or a Micro Processor Unit (MPU) located in the neighboring area optimization device. Or a digital signal processor (DSP), or a Field Programmable Gate Array (FPGA).

The above information transmission apparatus of the present application may be stored in a computer readable storage medium if it is implemented in the form of a software function module and sold or used as a separate product. Based on such understanding, the information transmission method and apparatus of the embodiments of the present application may be embodied in the form of a software product in essence or in a contribution to the related art, and the computer software product is stored in a storage medium, including a plurality of instructions. To enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the methods described in various embodiments of the present application. The foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a removable hard disk, a read only memory (ROM), a magnetic disk, or an optical disk. Thus, embodiments of the present application are not limited to any particular combination of hardware and software.

Correspondingly, the embodiment of the present application further provides a computer storage medium, wherein a computer program is configured, and the computer program is configured to execute the information transmission method of the embodiment of the present application.

Industrial applicability

The information transmission method and device provided by the present disclosure can quickly demodulate control information, ensure the performance requirement of downlink control information, avoid introducing additional downlink channels, save control overhead, and improve system spectrum efficiency.

Claims

An information transmission method includes:

Transmitting control information by using a downlink traffic channel, where the control information includes at least one of the following:

Downlink control information and feedback information of the uplink traffic channel.
The method according to claim 1, wherein the resource occupation manner of the control information in the downlink traffic channel is:

The different types of information in the control information are located in the same symbol in the downlink traffic channel, where the control information is located in the first symbol of the downlink traffic channel or starts from the first symbol of the downlink traffic channel; or,

Different types of information in the control information are located in different symbols in the downlink traffic channel.
The method according to claim 2, wherein said downlink traffic channel carries a demodulation reference signal; wherein if said control information comprises downlink control information and feedback information of an uplink traffic channel, said control information is located at said The first symbol of the downlink traffic channel or the first symbol from the downlink traffic channel begins to occupy, including:

The feedback information of the uplink traffic channel is located at least on both sides of the demodulation reference signal in the first symbol of the downlink traffic channel, and the downlink control information is located on both sides of the feedback information of the uplink traffic channel, where the Demodulating a reference signal located at a first symbol of the downlink traffic channel, or the demodulation reference signal is located at a first symbol of the downlink traffic channel and a symbol following the first symbol; or

The feedback information of the uplink traffic channel is located at the same location as the frequency domain in which the demodulation reference signal is located, the downlink control information is located on both sides of the feedback information of the uplink traffic channel, and the demodulation reference signal is located at the location Said that the downlink traffic channel is not the first symbol; or,

The feedback information of the uplink traffic channel is located in the first symbol of the downlink traffic channel and is sequentially occupied from the lowest or highest resource unit in the frequency domain, and the downlink control information is sequentially occupied from the feedback information of the uplink traffic channel. Wherein, if the demodulation reference signal is encountered, the resource in which the demodulation reference signal is located is not occupied.
The method according to claim 2, wherein said downlink traffic channel carries a demodulation reference signal; wherein if said control information comprises downlink control information, said control information is located in said first downlink traffic channel The symbol or the occupation from the first symbol of the downlink traffic channel includes:

The downlink control information is located at least on both sides of the demodulation reference signal in the first symbol of the downlink traffic channel, where the demodulation reference signal is located in a first symbol of the downlink traffic channel, or the demodulation reference The signal is located at a first symbol of the downlink traffic channel and a symbol following the first symbol; or

The downlink control information is located in the first symbol of the downlink traffic channel and is sequentially occupied from the lowest or highest frequency domain of the frequency domain, wherein the resource in which the demodulation reference signal is located is not occupied if the demodulation reference signal is encountered.
The method according to claim 2, wherein the downlink traffic channel carries a demodulation reference signal; the different types of information in the control information are located in different symbols in the downlink traffic channel, including:

The downlink control information is located in the first symbol of the downlink traffic channel or is occupied by the first symbol of the downlink traffic channel, and the feedback information of the uplink traffic channel is located after the first symbol of the downlink traffic channel. And located at the same position as the frequency domain of the demodulation reference signal; or

The downlink control information is located in the first symbol of the downlink traffic channel or is occupied by the first symbol of the downlink traffic channel, and the feedback information of the uplink traffic channel is located at least in a symbol that first includes a demodulation reference signal. Demodulating two sides of the reference signal, the demodulation reference signal being located after the first symbol of the downlink traffic channel; or

The downlink control information and the feedback information of the uplink traffic channel are sequentially occupied from resource elements with the lowest or highest frequency domain of the respective symbols, wherein the demodulation reference is not occupied if the demodulation reference signal is encountered. The resource where the signal is located.
The method according to any one of claims 1-5, wherein when the downlink traffic channel is transmitted using multiple layers or multiple codewords, the transmission manner of the control information includes at least one of the following:

The control information uses a single layer transmission, where the port used by the control information is one of ports used by the downlink traffic channel; or

The control information is transmitted by using a single codeword, and the codeword used by the information is determined to be a codeword having a highest modulation coding mode among the plurality of codewords, and the control information uses a fixed modulation mode; or

The control information is transmitted by using multiple layers or multiple codewords, wherein when the control information includes the downlink control information, part of the downlink control information is transmitted through each layer or each codeword; or

The control information is transmitted using multiple layers or multiple codewords, wherein the control information transmits the same information on all layers or all codewords; or

The control information is transmitted using multiple layers or multiple codewords, wherein the control information and the downlink data are transmitted using different layers or different codewords, respectively.
The method according to claim 6, wherein the port used by the control information is one of ports used by the downlink traffic channel, and includes:

The port used by the control information is a port with the smallest index value among the plurality of ports used by the downlink traffic channel.
The method of claim 6, wherein the transmitting, by each layer, part of the information of the downlink control information comprises:

Carrying different subtype information in the downlink control information in different layers for transmission;

The subtype information includes at least one of the following: hybrid automatic repeat request information, timing information, power control information, and resource indication information of an uplink control channel.
The method of claim 1, wherein the feedback information of the uplink traffic channel further comprises: a hybrid automatic repeat request process number.
The method according to claim 1, wherein the downlink traffic channel carries a demodulation reference signal; wherein if the control information includes feedback information of an uplink traffic channel, the control information is located in a resource of the downlink traffic channel. Location, including:

The feedback information of the uplink traffic channel is located at least on both sides of the demodulation reference signal in the first symbol, where the demodulation reference signal is located in the first symbol of the downlink traffic channel region, or the demodulation reference signal is located The first symbol of the downlink traffic channel and the symbol after the first symbol; or

The feedback information of the uplink traffic channel is located in the first symbol of the downlink traffic channel and is sequentially occupied from the lowest or highest frequency domain of the frequency domain, where the demodulation reference signal is not occupied if the demodulation reference signal is encountered. Resources; or,

The feedback information of the uplink traffic channel is located at the same location as the frequency domain in which the demodulation reference signal is located.
The method according to any one of claims 1-10, wherein the downlink control information is second-level downlink control information, and when the second-level downlink control information has different sub-type information, different sub-types The resource usage of information includes:

Different subtype information occupies different locations in the same symbol; or, different subtype information occupies different symbols.
The method according to any one of claims 1 to 11, wherein the downlink control information is second-level downlink control information, and the feedback information of the uplink traffic channel is hybrid automatic repeat request feedback information of an uplink traffic channel.
An information transmission device, the device comprising:

And a transmission unit, configured to transmit control information by using a downlink traffic channel, where the control information includes at least one of the following:

Downlink control information and feedback information of the uplink traffic channel.
The apparatus according to claim 13, wherein the apparatus further comprises: an encapsulating unit, configured to carry the control information in a downlink traffic channel, wherein a resource occupation manner of the control information in the downlink traffic channel is:

The different types of information in the control information are located in the same symbol in the downlink traffic channel, where the control information is located in the first symbol of the downlink traffic channel or starts from the first symbol of the downlink traffic channel; or,

Different types of information in the control information are located in different symbols in the downlink traffic channel.
A computer readable storage medium storing computer executable instructions arranged to perform the method of any of claims 1-12.