CN112583561B

CN112583561B - Information sending and receiving method and device

Info

Publication number: CN112583561B
Application number: CN201910944539.5A
Authority: CN
Inventors: 孙红利; 唐轩; 王坤; 张欢
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2023-11-17
Anticipated expiration: 2039-09-30
Also published as: CN112583561A; WO2021063114A1

Abstract

The invention provides a method and a device for sending and receiving information, wherein the method for sending information comprises the steps of sending first indication information to a terminal through a designated downlink control channel when demodulation of first uplink data is completed, wherein the first indication information is used for indicating a demodulation result of the first uplink data, and the designated downlink control channel comprises a downlink control channel to be sent currently or a downlink control channel which is available currently, namely, the demodulation result is sent to the terminal through the downlink control channel to be sent currently.

Description

Information sending and receiving method and device

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for transmitting and receiving information.

Background

Enhanced machine type communication (enhanced Machine Type Communication, eMTC) and no physical hybrid automatic repeat request indicator channel (Physical Hybrid ARQ Indicator Channel, PHICH) are available in the current 5G system, and the ACK/NAK demodulation result of the uplink physical uplink shared channel (Physical Uplink Shared Channel, PUSCH) link transmission by the base station is not fed back to the terminal through a dedicated channel like LTE. The current implementation is: for a packet of PUSCH data transmission, the base station demodulation result is ACK or NAK, and in the eMTC system, the terminal side can only judge through the new transmission data indication (new data indication, NDI) indication condition of the same hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) process number HARQ ID in the machine type communication physical downlink control channel (MTC physical downlink control channel, MPDCCH) downlink control information (downlink control information, DCI) DCI 6-0A, DCI6-0B grant; under NSA (Non-Stand-Alone) system, the terminal side can only judge whether the HARQ ID and NDI fields in DCI 0-0 or DCI 0-1 grant are the same as the last field, and if NDI in two preceding and succeeding grants is flipped for the same HARQ ID, it indicates that this is an indication of new data transmission, that is, the demodulation result of the base station side of the PUSCH data transmission of the last packet of the same HARQ ID is ACK, otherwise NAK. This has a disadvantage: for PUSCH data transmission of a packet, only when a terminal receives DCI 6-0A, DCI B or DCI 0-0, DCI 0-1 grant of the same HARQ ID, it can determine how to demodulate the packet data base station side according to fields such as HARQ ID, NDI, etc. in the grant, but the time when the base station side issues the grant of the packet is not fixed, the current protocol is defined as giving feedback after 4 subframes at PUSCH transmission time, and the specific time is uncertain, so that how long the two grants of the same HARQ ID differ or there is no next packet directly (no DCI grant is assumed after the last packet of PUSCH data or the UE is already in release state when the base station side is to give feedback), so that HARQ of uplink transmission cannot be guaranteed, and such implementation will have an influence on statistics of uplink bler or discontinuous transmission (Discontinuous Transmission, DTX), and will have a negative influence on experience and perceptibility of user data and voice service.

Aiming at the problem of lower feedback efficiency of uplink data demodulation results in the related technology, no solution exists yet.

Disclosure of Invention

The embodiment of the invention provides a method and a device for sending and receiving information, which are used for at least solving the problem of lower feedback efficiency of uplink data demodulation results in the related technology.

According to an embodiment of the present invention, there is provided a method for transmitting information, including:

receiving first uplink data sent by a terminal;

and when the demodulation of the first uplink data is completed, sending first indication information to a terminal through an appointed downlink control channel, wherein the first indication information is used for indicating a demodulation result of the first uplink data, and the appointed downlink control channel comprises a downlink control channel to be sent currently or a downlink control channel available currently.

Optionally, sending the indication information to the terminal by specifying the downlink control channel includes: and under the condition that the appointed downlink control channel comprises a downlink control channel to be sent currently, the first indication information is sent to the terminal through a second downlink control channel to be sent currently, wherein the second downlink control channel is used for indicating a demodulation result of second uplink data.

Optionally, the method further comprises: and when the specified downlink control channel does not bear the uplink authorization information corresponding to the terminal, sending second indication information to the terminal through the specified downlink control channel, wherein the second indication information is used for indicating the uplink authorization information corresponding to the terminal.

According to another embodiment of the present invention, there is also provided a method for receiving information, including:

sending first uplink data to a base station;

receiving an appointed downlink control channel sent by the base station, wherein the appointed downlink control channel is sent by the base station when the base station completes demodulation of the first uplink data, the appointed downlink control channel carries first indication information, the first indication information is used for indicating a demodulation result of the first uplink data, and the appointed downlink control channel comprises a downlink control channel to be sent currently or a downlink control channel available currently.

Optionally, receiving a designated downlink control channel sent by the base station includes: and receiving a second downlink control channel sent by the base station, wherein the second downlink control channel is a downlink control channel to be sent by the base station when the base station completes demodulation of the first uplink data, and the second downlink control channel is used for indicating a demodulation result of the second uplink data.

Optionally, receiving a designated downlink control channel sent by the base station, and further includes: receiving an appointed downlink control channel sent by the base station, wherein the appointed downlink control channel also carries second indication information, and the second indication information is used for indicating uplink authorization information.

According to still another embodiment of the present invention, there is also provided an information transmitting apparatus including:

the receiving module is used for receiving first uplink data sent by the terminal;

and the first sending module is used for sending first indication information to the terminal through an appointed downlink control channel when the demodulation of the first uplink data is completed, wherein the first indication information is used for indicating the demodulation result of the first uplink data, and the appointed downlink control channel comprises a downlink control channel to be sent currently or a downlink control channel available currently.

Optionally, the first sending module includes: and the sending unit is used for sending the first indication information to the terminal through a second downlink control channel to be sent currently under the condition that the appointed downlink control channel comprises the downlink control channel to be sent currently, wherein the second downlink control channel is used for indicating the demodulation result of the second uplink data.

Optionally, the apparatus further comprises: and the second sending module is used for sending second indication information to the terminal through the appointed downlink control channel under the condition that the appointed downlink control channel does not bear the uplink authorization information corresponding to the terminal, wherein the second indication information is used for indicating the uplink authorization information corresponding to the terminal.

According to still another embodiment of the present invention, there is also provided an information receiving apparatus including:

the sending module is used for sending the first uplink data to the base station;

the receiving module is configured to receive an appointed downlink control channel sent by the base station, where the appointed downlink control channel is sent by the base station when demodulation of the first uplink data is completed, the appointed downlink control channel carries first indication information, where the first indication information is used to indicate a demodulation result of the first uplink data, and the appointed downlink control channel includes a downlink control channel to be currently sent or a downlink control channel that is currently available.

Optionally, the receiving module includes: the first receiving unit is configured to receive a second downlink control channel sent by the base station, where the second downlink control channel is a downlink control channel to be sent when the base station completes demodulation of the first uplink data, and the second downlink control channel is used to indicate a demodulation result of the second uplink data.

Optionally, the receiving module further includes: the second receiving unit is configured to receive a designated downlink control channel sent by the base station, where the designated downlink control channel further carries second instruction information, where the second instruction information is used to instruct uplink authorization information.

According to a further embodiment of the invention, there is also provided a computer-readable storage medium having stored therein a computer program, wherein the computer program is arranged to perform the steps of any of the method embodiments described above when run.

According to a further embodiment of the invention, there is also provided an electronic device comprising a memory having stored therein a computer program and a processor arranged to run the computer program to perform the steps of any of the method embodiments described above.

According to the embodiment of the invention, when the demodulation of the first uplink data is completed, the first indication information is sent to the terminal through the appointed downlink control channel, wherein the first indication information is used for indicating the demodulation result of the first uplink data, and the appointed downlink control channel comprises the downlink control channel to be sent currently or the available downlink control channel currently, namely, the demodulation result is sent to the terminal through the downlink control channel to be sent currently, so that the problem of lower feedback efficiency of the uplink data demodulation result in the related technology can be solved, and the effect of improving the feedback efficiency of the demodulation result is achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

fig. 1 is a block diagram of a hardware configuration of a base station of a method of transmitting information according to an embodiment of the present application;

fig. 2 is a flowchart of a method of transmitting information according to an embodiment of the present application;

fig. 3 is a flowchart of a method of receiving information according to an embodiment of the present application;

fig. 4 is a block diagram of a structure of an information transmission apparatus according to an embodiment of the present application;

fig. 5 is a block diagram of a structure of an information receiving apparatus according to an embodiment of the present application;

FIG. 6 is a flow chart of a method of transmitting information according to an alternative embodiment of the application;

fig. 7 is a flowchart of a method of transmitting information according to an alternative embodiment of the present application;

fig. 8 is a flowchart of a method of transmitting information according to an alternative embodiment of the present application;

fig. 9 is a flowchart of a method of transmitting information according to an alternative embodiment of the present application.

Detailed Description

The application will be described in detail hereinafter with reference to the drawings in conjunction with embodiments. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

Example 1

The method according to the first embodiment of the present application may be performed in a base station or a similar computing device. Taking the operation on the base station as an example, fig. 1 is a block diagram of a hardware structure of a base station of a method for transmitting information according to an embodiment of the present application. As shown in fig. 1, the base station 10 may include one or more (only one is shown in fig. 1) processors 102 (the processors 102 may include, but are not limited to, a microprocessor MCU, a programmable logic device FPGA, etc. processing means) and a memory 104 for storing data, and optionally, a transmission device 106 for communication functions and an input-output device 108. It will be appreciated by those skilled in the art that the structure shown in fig. 1 is merely illustrative and is not intended to limit the structure of the base station described above. For example, the base station 10 may also include more or fewer components than shown in fig. 1, or have a different configuration than shown in fig. 1.

The memory 104 may be used to store a computer program, for example, a software program of application software and a module, such as a computer program corresponding to a method for transmitting information in an embodiment of the present application, and the processor 102 executes the computer program stored in the memory 104 to perform various functional applications and data processing, that is, to implement the above-mentioned method. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory remotely located relative to the processor 102, which may be connected to the base station 10 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The transmission means 106 is arranged to receive or transmit data via a network. The specific examples of the network described above may include a wireless network provided by a communication provider of the base station 10. In one example, the transmission device 106 may be a Radio Frequency (RF) module, which is used to communicate with the internet wirelessly.

In this embodiment, there is provided a method for transmitting information running in the above base station, and fig. 2 is a flowchart of a method for transmitting information according to an embodiment of the present invention, as shown in fig. 2, where the flowchart includes the following steps:

step S202, receiving first uplink data sent by a terminal;

step S204, when the demodulation of the first uplink data is completed, the first indication information is sent to the terminal through the appointed downlink control channel, wherein the first indication information is used for indicating the demodulation result of the first uplink data, and the appointed downlink control channel comprises a downlink control channel to be sent currently or a downlink control channel available currently.

Through the steps, when the demodulation of the first uplink data is completed, the first indication information is sent to the terminal through the designated downlink control channel, wherein the first indication information is used for indicating the demodulation result of the first uplink data, the designated downlink control channel comprises the downlink control channel to be sent currently or the available downlink control channel currently, namely, the demodulation result is sent to the terminal through the downlink control channel to be sent currently, so that the problem that the feedback efficiency of the uplink data demodulation result in the related technology is lower can be solved, and the effect of improving the feedback efficiency of the demodulation result is achieved.

Alternatively, the execution subject of the above steps may be a base station or the like, but is not limited thereto.

In an alternative embodiment, sending the indication information to the terminal by specifying the downlink control channel includes: and under the condition that the appointed downlink control channel comprises a downlink control channel to be sent currently, sending the first indication information to the terminal through a second downlink control channel to be sent currently, wherein the second downlink control channel is used for indicating a demodulation result of the second uplink data.

In an alternative embodiment, the method further comprises: when the uplink authorization information corresponding to the terminal is not carried in the designated downlink control channel, the second instruction information is sent to the terminal through the designated downlink control channel, wherein the second instruction information is used for indicating the uplink authorization information corresponding to the terminal.

According to another embodiment of the present invention, there is further provided a method for receiving information, fig. 3 is a flowchart of a method for receiving information according to an embodiment of the present invention, as shown in fig. 3, including:

step S301, first uplink data is sent to a base station;

step S303, receiving a designated downlink control channel sent by the base station, where the designated downlink control channel is sent by the base station when demodulation of the first uplink data is completed, and the designated downlink control channel carries first indication information, where the first indication information is used to indicate a demodulation result of the first uplink data, and the designated downlink control channel includes a downlink control channel to be currently sent or a downlink control channel that is currently available.

Through the steps, the first uplink data is sent to the base station, and the designated downlink control channel sent by the base station is received, wherein the designated downlink control channel is sent by the base station when the base station completes the demodulation of the first uplink data, the designated downlink control channel carries first indication information, the first indication information is used for indicating the demodulation result of the first uplink data, and the designated downlink control channel comprises a downlink control channel to be sent currently or a downlink control channel available currently, namely, the demodulation result is sent to the terminal through the downlink control channel to be sent currently, so that the problem that the feedback efficiency of the uplink data demodulation result in the related art is lower can be solved, and the effect of improving the feedback efficiency of the demodulation result is achieved.

In an alternative embodiment, the receiving the designated downlink control channel sent by the base station includes: and receiving a second downlink control channel sent by the base station, wherein the second downlink control channel is a downlink control channel to be sent when the base station completes demodulation of the first uplink data, and the second downlink control channel is used for indicating a demodulation result of the second uplink data.

In an optional implementation manner, the receiving base station sends a designated downlink control channel, and further includes: and receiving an appointed downlink control channel sent by the base station, wherein the appointed downlink control channel also carries second indication information, and the second indication information is used for indicating uplink authorization information.

According to still another embodiment of the present invention, there is also provided an information transmitting apparatus, fig. 4 is a block diagram of a structure of an information transmitting apparatus according to an embodiment of the present invention, as shown in fig. 4, including:

a receiving module 42, configured to receive first uplink data sent by the terminal;

the first sending module 44 is configured to send, when demodulation of the first uplink data is completed, first indication information to the terminal by specifying a downlink control channel, where the first indication information is used to indicate a demodulation result of the first uplink data, and the specified downlink control channel includes a downlink control channel to be currently sent or a downlink control channel that is currently available.

Through the module, when the demodulation of the first uplink data is completed, the first indication information is sent to the terminal through the designated downlink control channel, wherein the first indication information is used for indicating the demodulation result of the first uplink data, the designated downlink control channel comprises the downlink control channel to be sent currently or the available downlink control channel currently, namely, the demodulation result is sent to the terminal through the downlink control channel to be sent currently, so that the problem that the feedback efficiency of the uplink data demodulation result in the related technology is lower can be solved, and the effect of improving the feedback efficiency of the demodulation result is achieved.

In an alternative embodiment, the first transmitting module includes: and the sending unit is used for sending the first indication information to the terminal through a second downlink control channel to be sent currently under the condition that the specified downlink control channel comprises the downlink control channel to be sent currently, wherein the second downlink control channel is used for indicating the demodulation result of the second uplink data.

In an alternative embodiment, the apparatus further comprises: and the second sending module is used for sending second indication information to the terminal through the appointed downlink control channel under the condition that the uplink authorization information corresponding to the terminal is not carried in the appointed downlink control channel, wherein the second indication information is used for indicating the uplink authorization information corresponding to the terminal.

According to still another embodiment of the present invention, there is also provided an information receiving apparatus, fig. 5 is a block diagram of a structure of the information receiving apparatus according to an embodiment of the present invention, as shown in fig. 5, including:

a sending module 51, configured to send the first uplink data to the base station;

the receiving module 53 is configured to receive a designated downlink control channel sent by a base station, where the designated downlink control channel is sent by the base station when demodulation of the first uplink data is completed, and the designated downlink control channel carries first indication information, where the first indication information is used to indicate a demodulation result of the first uplink data, and the designated downlink control channel includes a downlink control channel to be currently sent or a downlink control channel that is currently available.

Through the module, the first uplink data is sent to the base station, and the appointed downlink control channel sent by the base station is received, wherein the appointed downlink control channel is sent by the base station when the base station completes the demodulation of the first uplink data, the appointed downlink control channel carries first indication information, the first indication information is used for indicating the demodulation result of the first uplink data, and the appointed downlink control channel comprises a downlink control channel to be sent currently or a downlink control channel available currently, namely, the demodulation result is sent to the terminal through the downlink control channel to be sent currently, so that the problem that the feedback efficiency of the uplink data demodulation result in the related technology is lower can be solved, and the effect of improving the feedback efficiency of the demodulation result is achieved.

In an alternative embodiment, the receiving module includes: the first receiving unit is configured to receive a second downlink control channel sent by the base station, where the second downlink control channel is a downlink control channel to be sent by the base station when demodulation of the first uplink data is completed, and the second downlink control channel is used to indicate a demodulation result of the second uplink data.

In an alternative embodiment, the receiving module further comprises: the second receiving unit is configured to receive a designated downlink control channel sent by the base station, where the designated downlink control channel further carries second instruction information, where the second instruction information is used to instruct uplink authorization information.

The foregoing apparatus in this embodiment is used to implement the foregoing embodiments and preferred embodiments, and will not be described in detail. As used above, the term "module" may be a combination of software and/or hardware that implements a predetermined function. While the means described in the following embodiments are preferably implemented in software, implementation in hardware, or a combination of software and hardware, is also possible and contemplated.

It should be noted that each of the above modules may be implemented by software or hardware, and for the latter, it may be implemented by, but not limited to: the modules are all located in the same processor; alternatively, the above modules may be located in different processors in any combination.

Alternative embodiments

The embodiment of the invention can solve the feedback timeliness problem when the PUSCH demodulation result is ACK, and in order to solve the HARQ feedback problem of the PUSCH link transmission, the embodiment of the invention provides three DCI format construction methods:

first kind: the original protocol is used for defining partial fields (only HARQ ID and NDI (new transmission data indication) fields in the original DCI field are applicable) in the uplink DCI field, and bit positions and field positions are unchanged;

Second kind: adding HARQ ID and NDI indication field by using reserved bit in the existing uplink DCI format;

third kind: the uplink and downlink DCI format indication, HARQ ID and NDI indication fields are added by using reserved bits in the existing downlink DCI format.

In an optional embodiment, the base station side issues MPDCCH DCI 6-0A, DCI-0B or PDCCH DCI 0-0, DCI 0-1 grant, so that the UE can timely learn the demodulation result of the PUSCH data base station side, and plays a great role in the error rate of uplink PUSCH data transmission and DTX real-time statistics.

In an optional implementation manner, the embodiment of the invention proposes solutions in three different scenarios for feedback of PUSCH data demodulation results by the eNB, scenario one: there is no MPDCCH grant at the feedbacks instant (4 TTIs after PUSCH transmission); scene II: there is an uplink MPDCCH grant at the feedback time (4 TTIs after PUSCH transmission), but the uplink MPDCCH grant is not the same HARQ ID as the packet of PUSCH data for which demodulation results are to be fed back; scene III: there is only a downlink MPDCCH or PDCCH grant at the feedback time (4 TTIs after PUSCH transmission). Wherein, the first DCI format is used in the first scene, and the second and third DCI formats are used in the second and third scenes respectively.

The embodiment of the invention can solve the problem of feedback timeliness when the PUSCH demodulation result is ACK, and provides three DCI format construction schemes and HARQ feedback schemes at the base station side under three different scenes in order to solve the current situation that the PUSCH link transmission HARQ feedback is not enough in time and the PUSCH bler and DTX statistics are affected in the existing scheme.

Fig. 6 is a flowchart of a method for transmitting information according to an alternative embodiment of the present invention, as shown in fig. 6, three DCI format construction schemes:

scheme one: specifying partial fields in an uplink DCI field using an original protocol

The method comprises the steps that only the HARQ ID and NDI fields in a DCI field are defined by using the existing protocol, DCI grants (comprising MPDCCH DCI 6-0A, DCI-0B or PDCCH DCI 0-0 and DCI 0-1 grants) are issued by a base station side in the most reasonable time, so that the UE can timely know demodulation results of the base station side for PUSCH data.

The scheme is suitable for a scene that no uplink and downlink DCI authorization exists in the expected feedback period.

Taking the DCI 0-0 format defined by the existing 5G protocol as an example, the scheme does not change the original standard DCI field definition, the original protocol definition field does not increase or decrease at all, the bit of the original field does not change, and the bit of other fields is 0 except the HARQ ID and NDI fields which take values according to the actual feedback condition.

The scheme is simple and clear, and has very strong compatibility and practicality.

Scheme II: adding HARQ ID and NDI indication fields by using reserved bit bits in existing uplink DCI formats

In the existing eMTC Internet of things and 5G uplink DCI formats (DCI 6-0A, DCI 6-0B, DCI 0-0 and DCI 0-1), a reserved bit is used for adding a 4-bit HARQ ID and a 1-bit NDI feedback field, and a terminal judges the demodulation result of the PUSCH data through the newly added field; and the base station selects reasonable occasions to transmit MPDCH or PDCCH authorization after 4 TTIs transmitted by the uplink PUSCH.

The scheme is used for DCI grant (comprising DCI 6-0A, DCI 6-0B or DCI 0-0, DCI 0-1 grant) with other HARQ IDs in the expected feedback period, but the HARQ ID is different from the HARQ ID of the PUSCH to be fed back, and meanwhile, the base station side has a demodulation result and is ACK for the PUSCH data to be fed back at the terminal side. In this scenario, HARQ ID and NDI indication corresponding to PUSCH data requiring feedback of demodulation result are directly added to the original DCI format, and then sent to the terminal together with the original DCI information. Of course, if only DCI grant of a single HARQ ID is provided at this time and there is no uplink data that needs to feed back the demodulation result, all the newly added 5bit positions are 0, so that no impact is generated on the definition of the original protocol; meanwhile, if the HARQ ID in the DCI authorization is consistent with the HARQ ID of the data to be fed back at the moment, the prior implementation scheme is adopted, so that the harmlessness to the prior implementation is ensured.

Taking the existing DCI 0-0 format defined by the 5G protocol as an example, in the DCI format defined by the original protocol, the original reserved bits or 5 bits of bits used for DCI alignment are used to indicate HARQ ID and NDI indication of PUSCH data to be fed back, and the original DCI grant is not affected.

The scheme is simple and clear, and has strong compatibility and practicality.

Scheme III: adding uplink and downlink DCI format indication, HARQ ID and NDI indication fields by using reserved bit in existing downlink DCI format

Adding 1bit uplink and downlink DCI format indication, 4bit HARQ ID and 1bit NDI feedback field into the existing eMTC and 5G downlink DCI formats (DCI 6-1A, DCI 6-1B, DCI 1-0 and DCI 1-1) by using reserved bit, and judging a demodulation result of the PUSCH data by the terminal through the newly added field; and the base station selects reasonable time to send the ACK demodulation result of the PUSCH data to be fed back along with the downlink authorization after 4 TTIs sent by the uplink PUSCH.

The scheme is suitable for the situation that only downlink DCI grant (comprising DCI 6-1A, DCI 6-1B, DCI 1-0 and DCI 1-1 grant) exists in the expected feedback period, at this time, for the PUSCH data to be fed back at the terminal side, the base station side already has a demodulation result and is ACK, and in the scene, the scheme is provided that DCI format indication (indication is uplink grant), HARQ ID and NDI indication bit are directly added in the original downlink DCI format, and then the DCI information is sent to the terminal together with the original DCI information. Of course, if only the DCI with a single HARQ ID is authorized at this time, no demodulation result of the PUSCH data is needed to be fed back, all the newly added 6bit positions are 0, which proves that no impact is generated on the definition of the original protocol, and the harmlessness to the existing implementation is ensured.

Taking a DCI 1-0 format defined by the existing 5G protocol as an example, in the downlink DCI format defined by the original protocol, 6 bits in original reserved bits are used for indicating an uplink DCI format (1 bit), HARQ ID (4 bit) of PUSCH data to be fed back and NDI indication (1 bit), and original DCI authorization is not affected.

The scheme is simple and clear, and has strong compatibility and practicality.

HARQ feedback schemes adopted by base station sides under three different scenes:

scheme one:

in the scenario where there is no MPDCCH grant at the feedback time (after 4 TTIs are transmitted on PUSCH), the base station side will perform HARQ feedback on PUSCH using the DCI format in the DCI format configuration scheme one, the specific procedure is described in the following embodiment one, fig. 7 is a flowchart of a method for transmitting information according to the alternative embodiment one of the present invention, and the base station side processing flow is shown in fig. 7.

Scheme II:

in a scenario where there is an uplink MPDCCH grant at a feedback time (after 4 TTIs are transmitted on PUSCH), but the PUSCH data of the packet with the demodulation result to be fed back is not the same HARQ ID, the base station will perform HARQ feedback on PUSCH using the DCI format in the DCI format construction scheme two, the specific procedure is described in the following embodiment two, fig. 8 is a flowchart of a method for transmitting information according to an alternative embodiment two of the present invention, and the base station side processing flow is shown in fig. 8.

Scheme III:

in the scenario that there is only downlink MPDCCH or PDCCH grant at the feedback time (after 4 TTIs are transmitted on PUSCH), the base station will perform HARQ feedback on PUSCH using the DCI format in the DCI format configuration scheme three, the specific procedure is described in the following embodiment three, fig. 9 is a flowchart of a method for transmitting information according to the alternative embodiment three of the present invention, and the base station side processing flow is shown in fig. 9.

By adopting the method provided by the embodiment of the invention, the timeliness problem that the PUSCH demodulation result in the 5G Internet of things is fed back to the UE when the PUSCH demodulation result is the ACK can be solved, MPDCCH DCI-0A, DCI-0B or PDCCH DCI 0-0 and DCI 0-1 authorization is issued through the base station side in the most reasonable time, so that the UE can timely know the demodulation result of the PUSCH data base station side, and plays a great role in the error rate of uplink PUSCH data transmission and DTX real-time statistics. Meanwhile, three solutions in different scenes are provided for the feedback of the eNB on the PUSCH data demodulation result. Compared with the prior art, the UE can timely learn the demodulation result of the PUSCH data base station side, and plays a great role in real-time statistics of the error rate and DTX of the uplink PUSCH data.

Combining with the three DCI format designs and the HARQ feedback schemes at the base station side under three different scenes,

The invention simultaneously provides three HARQ feedback embodiments available at the base station side, which are respectively applicable to different scenes.

Alternative embodiment one

Fig. 7 is a flowchart of a method for transmitting information according to an alternative embodiment of the present invention, as shown in fig. 7:

there is no MPDCCH grant at the feedback time (4 TTIs after PUSCH transmission)

In the embodiment of the invention, MPDCCH DCI-0A, DCI-0B or PDCCH DCI 0-0 and DCI 0-1 are added to issue at the moment that MPDCH or PDCCH is not authorized originally, and the DCI format adopts design scheme 1.

From the existing protocol, it is understood that, for a packet of PUSCH uplink data, the base station may select a proper time after 4 TTIs to feed back the demodulation result of the packet of PUSCH to the UE side, so that the UE knows how the base station demodulates the packet of PUSCH data.

In the related art, if and only if there is an uplink grant of the MPDCCH and the same HARQ ID grant, the UE can determine the demodulation result of the last packet of data base station sent by the UE therefrom, and if there is no grant of the MPDCCH or the PDCCH at the base station side in a plurality of TTIs after 4 TTIs sent by the PUSCH, the terminal side cannot timely learn the demodulation result of the packet of PUSCH data, which affects uplink performance index statistics such as uplink bler and DTX, and meanwhile, has negative effects on experience and perception of user data and voice service, in order to solve the problem, the embodiment of the present invention firstly proposes the following scheme:

The grant of MPDCCH DCI 6-0A, DCI 6-0B or PDCCH DCI 0-0, DCI 0-1 is increased without MPDCH grant. When the demodulation result of the base station for the PUSCH data with the HARQ ID of N is ACK, the eNB may select an available subframe after four subframes of the PUSCH and timely issue MPDCCH or PDCCH grant, where the MPDCCH or PDCCH only includes the HARQ indication and NDI indication of the data packet with the HARQ ID of N. It should be noted that, for the case that the demodulation result is ACK in the half duplex mode of the eMTC system, it is also required that the front subframe and the rear subframe of the subframe to be fed back have no PUSCH or PUCCH uplink data, so that the UE is guaranteed to be able to timely receive the demodulation result of the base station on its PUSCH data in an effective time, so as to facilitate uplink bler and DTX statistics at the UE side. The specific DCI format uses design one.

Alternative embodiment two

There is an uplink MPDCCH grant at the feedback time (4 TTIs after PUSCH transmission)

When demodulation of the packet of PUSCH data of the HARQ ID N is completed and the result is ACK, at this time, the base station may select a proper time to feed back the demodulation result to the terminal through MPDCCH or PDCCH, the existing implementation is judged by whether NDI is flipped in the next grant of the same HARQ ID N, if NDI is not flipped, the demodulation result of the packet of data base station side of the HARQ ID N is NAK, if NDI is flipped, it is ACK, and if NDI is flipped, it is ACK, the UE can only obtain the demodulation result of the previous packet of data base station side of the same HARQ ID N when the DCI grant of the same HARQ ID N is issued, and before the feedback, even if there is an uplink grant of MPDCCH or PDCCH but not an grant of the HARQ ID N, the base station side cannot bring the feedback result of the packet of data of the HARQ ID N to the UE side through the DCI, even if the current base station side has the demodulation result of the packet of data to be fed back, so that timeliness is much worse. In order to solve the timeliness problem, the invention provides the following scheme:

Fig. 8 is a flowchart of a method for transmitting information according to an alternative embodiment of the present invention, as shown in fig. 8:

after the PUSCH transmits the subframe n+4, if the base station side has already a demodulation result to be fed back and is ACK, the base station side waits for a proper time to feed back the demodulation result to the terminal side, and if a packet of MPDCCH or PDCCH uplink grant is just caught up at this time, the following judgment needs to be made on the HARQ ID therein:

if the uplink grant and the data to be fed back are for the same HARQ ID, the original protocol definition is directly used, and whether the new transmission or the retransmission is carried out is confirmed by the NDI or not by using the existing DCI uplink grant, namely the same HARQ ID.

If the HARQ ID carried in the uplink grant at this time is not the HARQ ID of the uplink data of the packet to be fed back, the HARQ ID and the NDI feedback field are added on the basis of ensuring the original grant by adopting the DCI format scheme II mentioned in the invention, and the detailed description is shown in the design scheme II.

The scheme comprises two cases of simultaneous uplink and downlink authorization, and the scheme is adopted under the two authorization scenes.

Alternative embodiment III

Fig. 9 is a flowchart of a method for transmitting information according to an alternative embodiment of the present invention, as shown in fig. 9:

There is only downlink MPDCCH DCI 6-1A, DCI 6-1B grant or PDCCH DCI 1-0 and DCI 1-1 at the feedbacks instant (4 TTIs after PUSCH transmission).

When the demodulation of the PUSCH of the HARQ ID N is completed at the base station side and the result is ACK, at this time, the base station may select a proper time to feed back the demodulation result to the terminal through MPDCCH or PDCCH, and the existing implementation is judged by whether the NDI in the next uplink grant of the same HARQ ID N turns over the terminal, if the NDI is not turned over, the demodulation result of the packet of data at the base station side for the HARQ ID N is NAK, and if the NDI is turned over, the packet of data at the base station side is ACK. The existing scheme has the defect that when the PUSCH demodulation of the HARQ ID N is completed at the base station side and is to be fed back to the UE, if the nearby grant is only downlink MPDCH or PDCCH grant, even if the demodulation of the PUSCHHHRQID is completed and the result is that the ACK base station can not timely feed back the result to the UE.

In order to solve the defects in the prior art, the invention provides the following scheme: after the PUSCH transmits the subframe n+4, if the base station side has the demodulation result to be fed back and is ACK, the base station side waits for a proper time to feed back the demodulation result to the terminal side, and if a packet of downlink grant is encountered at this time, a part of fields of DCI 6-0A, DCI-0B or DCI 0-0, DCI 0-1 need to be added to the MPDCCH or PDCCH with only the downlink grant, and the specific DCI format adopts the design scheme three mentioned in the present invention.

From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.

Example 2

Embodiments of the present invention also provide a computer readable storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the method embodiments described above when run.

Alternatively, in the present embodiment, the above-described computer-readable storage medium may be configured to store a computer program for executing the steps of:

S1, receiving first uplink data sent by a terminal;

and S2, when the demodulation of the first uplink data is completed, sending first indication information to the terminal through a designated downlink control channel, wherein the first indication information is used for indicating the demodulation result of the first uplink data, and the designated downlink control channel comprises a downlink control channel to be sent currently or a downlink control channel available currently.

Alternatively, in the present embodiment, the storage medium may include, but is not limited to: a usb disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing a computer program.

s1, sending first uplink data to a base station;

s2, receiving an appointed downlink control channel sent by a base station, wherein the appointed downlink control channel is sent by the base station when the base station completes demodulation of the first uplink data, the appointed downlink control channel carries first indication information, the first indication information is used for indicating a demodulation result of the first uplink data, and the appointed downlink control channel comprises a downlink control channel to be sent currently or a downlink control channel available currently.

An embodiment of the invention also provides an electronic device comprising a memory having stored therein a computer program and a processor arranged to run the computer program to perform the steps of any of the method embodiments described above.

Optionally, the electronic apparatus may further include a transmission device and an input/output device, where the transmission device is connected to the processor, and the input/output device is connected to the processor.

Alternatively, in the present embodiment, the above-described processor may be configured to execute the following steps by a computer program:

s1, receiving first uplink data sent by a terminal;

s1, sending first uplink data to a base station;

Alternatively, specific examples in this embodiment may refer to examples described in the foregoing embodiments and optional implementations, and this embodiment is not described herein.

It will be appreciated by those skilled in the art that the modules or steps of the invention described above may be implemented in a general purpose computing device, they may be concentrated on a single computing device, or distributed across a network of computing devices, they may alternatively be implemented in program code executable by computing devices, so that they may be stored in a memory device for execution by computing devices, and in some cases, the steps shown or described may be performed in a different order than that shown or described, or they may be separately fabricated into individual integrated circuit modules, or multiple modules or steps within them may be fabricated into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for transmitting information, comprising:

receiving first uplink data sent by a terminal;

when the demodulation of the first uplink data is completed, sending first indication information to a terminal through an appointed downlink control channel, wherein the first indication information is used for indicating a demodulation result of the first uplink data, and the appointed downlink control channel comprises a downlink control channel to be sent currently or a downlink control channel available currently;

wherein the method further comprises: when the specified downlink control channel does not bear the uplink authorization information corresponding to the terminal, sending second indication information to the terminal through the specified downlink control channel, wherein the second indication information is used for indicating the uplink authorization information corresponding to the terminal;

the sending the second indication information to the terminal through the specified downlink control channel includes: under the condition that any authorization information corresponding to the terminal is not carried in the appointed downlink control channel in an expected feedback period, bit and field positions of DCI fields defined by the existing protocol are reserved; filling bit of other original defined fields except the HARQ ID field and the NDI field into 0, and taking values of the HARQ ID field and the NDI field according to actual feedback conditions to obtain the second indication information; and sending the second indication information to the terminal through the appointed downlink control channel.

2. The method of claim 1, wherein transmitting the indication information to the terminal by designating the downlink control channel comprises:

and under the condition that the appointed downlink control channel comprises a downlink control channel to be sent currently, the first indication information is sent to the terminal through a second downlink control channel to be sent currently, wherein the second downlink control channel is used for indicating a demodulation result of second uplink data.

3. A method of receiving information, comprising:

sending first uplink data to a base station;

receiving an appointed downlink control channel sent by the base station, wherein the appointed downlink control channel is sent by the base station when demodulation of the first uplink data is completed, the appointed downlink control channel carries first indication information, the first indication information is used for indicating a demodulation result of the first uplink data, the appointed downlink control channel comprises a downlink control channel to be sent currently or a downlink control channel available currently, the appointed downlink control channel also carries second indication information, the second indication information is used for indicating uplink authorization information, and the base station fills bit and field positions of DCI fields defined by an existing protocol into 0 by reserving bit positions of the DCI fields defined by the existing protocol, and generates the HARQ ID field and the NDI field according to a mode of taking values of actual feedback conditions.

4. The method of claim 3, wherein receiving the designated downlink control channel sent by the base station comprises:

and receiving a second downlink control channel sent by the base station, wherein the second downlink control channel is a downlink control channel to be sent by the base station when the base station completes demodulation of the first uplink data, and the second downlink control channel is used for indicating a demodulation result of the second uplink data.

5. An information transmitting apparatus, comprising:

the first sending module is used for sending first indication information to the terminal through an appointed downlink control channel when the demodulation of the first uplink data is completed, wherein the first indication information is used for indicating a demodulation result of the first uplink data, and the appointed downlink control channel comprises a downlink control channel to be sent currently or a downlink control channel available currently;

wherein the apparatus further comprises: a second sending module, configured to send second indication information to a terminal through the specified downlink control channel when the specified downlink control channel does not carry uplink grant information corresponding to the terminal, where the second indication information is used to indicate the uplink grant information corresponding to the terminal, and the sending the second indication information to the terminal through the specified downlink control channel includes: under the condition that any authorization information corresponding to the terminal is not carried in the appointed downlink control channel in an expected feedback period, bit and field positions of DCI fields defined by the existing protocol are reserved; filling bit of other original defined fields except the HARQ ID field and the NDI field into 0, and taking values of the HARQ ID field and the NDI field according to actual feedback conditions to obtain the second indication information; and sending the second indication information to the terminal through the appointed downlink control channel.

6. The apparatus of claim 5, wherein the first transmitting module comprises:

and the sending unit is used for sending the first indication information to the terminal through a second downlink control channel to be sent currently under the condition that the appointed downlink control channel comprises the downlink control channel to be sent currently, wherein the second downlink control channel is used for indicating the demodulation result of the second uplink data.

7. An information receiving apparatus, comprising:

a receiving module, configured to receive an assigned downlink control channel sent by the base station, where the assigned downlink control channel is sent by the base station when demodulation of the first uplink data is completed, and the assigned downlink control channel carries first indication information, where the first indication information is used to indicate a demodulation result of the first uplink data, and the assigned downlink control channel includes a downlink control channel to be currently sent or a currently available downlink control channel;

wherein, the receiving module further includes: the second receiving unit is configured to receive a specified downlink control channel sent by the base station, where the specified downlink control channel further carries second indication information, where the second indication information is used to indicate uplink grant information, where the second indication information is generated by the base station by filling bit and field positions of a DCI field defined by an existing protocol, other originally defined field bit except an HARQ ID field and an NDI field, to 0, and taking values of the HARQ ID field and the NDI field according to actual feedback conditions when any grant information corresponding to a terminal is not carried in the specified downlink control channel in an expected feedback period.

8. The apparatus of claim 7, wherein the receiving module comprises:

the first receiving unit is configured to receive a second downlink control channel sent by the base station, where the second downlink control channel is a downlink control channel to be sent when the base station completes demodulation of the first uplink data, and the second downlink control channel is used to indicate a demodulation result of the second uplink data.

9. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program, wherein the computer program is arranged to execute the method of any of the claims 1 to 2 when run.

10. A computer readable storage medium, characterized in that the computer readable storage medium has stored therein a computer program, wherein the computer program is arranged to execute the method of any of the claims 3 to 4 when run.

11. An electronic device comprising a memory and a processor, characterized in that the memory has stored therein a computer program, the processor being arranged to run the computer program to perform the method of any of the claims 1 to 2.

12. An electronic device comprising a memory and a processor, characterized in that the memory has stored therein a computer program, the processor being arranged to run the computer program to perform the method of any of the claims 3 to 4.