CN109314987B

CN109314987B - Feedback information transmission method, device, equipment and system

Info

Publication number: CN109314987B
Application number: CN201880001263.0A
Authority: CN
Inventors: 牟勤
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2018-09-06
Filing date: 2018-09-06
Publication date: 2022-07-08
Anticipated expiration: 2038-09-06
Also published as: WO2020047806A1; CN109314987A

Abstract

The disclosure provides a feedback information transmission method, a device, equipment and a system, and belongs to the field of communication. The method comprises the following steps: the terminal sends uplink data and first identification related information to the access network equipment on a pre-configured first time-frequency resource; the terminal receives feedback information sent by the access network equipment on a target channel, wherein the feedback information comprises second identification related information, and the second identification related information is used for identifying the terminal with successful data transmission on the first time-frequency resource; wherein the target channel comprises a PDCCH and/or a PDSCH. The method and the device solve the technical problem that the base station cannot transmit the HARQ feedback information to the terminal due to the fact that the C-RNTI allocated in the random access process does not exist when the terminal transmits the uplink data to the base station by the authorization-free uplink scheduling, and realize the HARQ feedback mechanism in the authorization-free uplink scheduling transmission scene.

Description

Feedback information transmission method, device, equipment and system

Technical Field

The present disclosure relates to the field of communications, and in particular, to a method, an apparatus, a device, and a system for transmitting feedback information.

Background

In a Long-Term Evolution (LTE) system, a Hybrid Automatic Repeat reQuest (HARQ) mechanism is used to ensure the success of data transmission.

In the related art, a terminal accesses a base station through four message steps in a random access procedure. In the random access process, the terminal acquires a Cell Radio-Network temporary Identifier (C-RNTI) configured by the base station. And after acquiring the uplink data transmission resource distributed by the base station, the terminal sends uplink data to the base station on the uplink data transmission resource. Then, the base station transmits HARQ feedback information including Acknowledgement (ACK) and/or Negative Acknowledgement (NACK) to the terminal on a Physical Downlink Control Channel (PDCCH). The HARQ feedback information adopts the C-RNTI of the terminal for scrambling transmission.

In a 5G New Radio (NR) system, a terminal may transmit uplink data to a base station by using unlicensed uplink scheduling, and at this time, a random access process is not required between the terminal and the base station, so that the terminal may not acquire C-RNTI allocated by the base station, and the base station may not scramble and transmit HARQ feedback information to the terminal by using the C-RNTI, which may result in no HARQ solution for unlicensed uplink scheduling.

Disclosure of Invention

The embodiment of the disclosure provides a feedback information transmission method, a feedback information transmission device, a feedback information transmission equipment and a feedback information transmission system, which can solve the technical problem that a base station cannot transmit HARQ feedback information to a terminal because a C-RNTI allocated in a random access process does not exist when the terminal transmits uplink data to the base station by using an authorization-free uplink scheduling. The technical scheme is as follows:

according to a first aspect of the embodiments of the present disclosure, a method for transmitting feedback information is provided, the method including:

the terminal sends uplink data and first identification related information to the access network equipment on a first time-frequency resource, wherein the first time-frequency resource is a time-frequency resource pre-configured by the access network equipment, and the first identification related information is used for identifying the terminal;

the terminal receives feedback information sent by the access network equipment on a target channel, wherein the feedback information comprises second identification related information, and the second identification related information is used for identifying the terminal with successful data transmission on the first time-frequency resource;

wherein the target channel comprises a PDCCH and/or a PDSCH.

Optionally, the first identification-related information includes: identification information of the terminal; or, a part of bits in the uplink data; or, a part of bits in the identification information of the terminal; or, the identification information of the terminal passes the function value after the function mapping; or, a random number generated by the terminal.

In some possible embodiments, the feedback information further includes transmission assistance information, and the transmission assistance information is information for assisting transmission of subsequent uplink data.

Optionally, the transmission assistance information comprises at least one of the following information:

the time advance adjustment quantity of the terminal corresponding to the successful data transmission;

power control parameters of the terminal corresponding to successful data transmission;

first indication information of a terminal corresponding to successful data transmission, wherein the first indication information is used for indicating establishment of Radio Resource Control (RRC) connection;

second indication information of the terminal corresponding to the data transmission failure, wherein the second indication information is used for indicating a backoff (backoff) time setting range when the uplink data is retransmitted;

adjusting the time advance of the terminal corresponding to the data transmission failure;

a power ramping parameter of a terminal corresponding to the data transmission failure.

In some possible embodiments, the receiving, by the terminal, the feedback information sent by the access network device on the target channel includes:

and the terminal receives feedback information sent by the access network equipment on the second time-frequency resource, wherein the feedback information is carried by the PDCCH.

In some possible embodiments, the receiving, by the terminal, the feedback information sent by the access network device on the second time-frequency resource includes:

and the terminal uses a Cyclic Redundancy Check (CRC) part of the target scrambling code sequence Descrambling (DCI) on the second time frequency resource to obtain the DCI containing the feedback Information.

the terminal receives scheduling information on the second time-frequency resource, the scheduling information is used for indicating a PDSCH located in the third time-frequency resource, and the scheduling information is carried by the PDCCH;

and the terminal receives feedback information sent by the access network equipment on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

In some possible embodiments, the receiving, by the terminal, the scheduling information on the second time-frequency resource includes:

and the terminal uses the target scrambling code sequence to descramble the CRC part of the DCI on the second time-frequency resource to obtain the DCI containing the scheduling information.

the terminal receives DCI on a second time frequency resource, the DCI comprises preset bits, and the DCI is borne by the PDCCH;

when the preset bit is a first value, the terminal acquires feedback information from the DCI;

when the preset bit is a second value, the terminal acquires scheduling information from the DCI, wherein the scheduling information is used for indicating the PDSCH located in a third time-frequency resource; and receiving feedback information sent by the access network equipment on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

In some possible embodiments, when the preset bit is the second value, the feedback information further includes transmission assistance information, and the transmission assistance information is information for assisting transmission of subsequent uplink data.

In some possible embodiments, the terminal receives DCI on the second time-frequency resource, including:

and the terminal descrambles the CRC part of the DCI by using the target scrambling code sequence on the second time-frequency resource to obtain the DCI containing the preset bit.

In some possible embodiments, the method further comprises:

a terminal receives a target scrambling code sequence configured by access network equipment; or the terminal determines the target scrambling code sequence according to the first time-frequency resource.

In some possible embodiments, the determining, by the terminal, the target scrambling code sequence according to the first time-frequency resource includes:

the terminal acquires a frequency position number f _ id and an initial subframe number t _ id of a first time-frequency resource;

and the terminal calculates the number of the target scrambling code sequence according to the frequency position number f _ id and the initial subframe number t _ id.

According to a second aspect of the embodiments of the present disclosure, there is provided a feedback information transmission method, including:

the access network equipment receives uplink data and first identification related information sent by the terminal on a first time-frequency resource, wherein the first time-frequency resource is a time-frequency resource pre-configured by the access network equipment, and the first identification related information is used for identifying the terminal;

the access network equipment sends feedback information on a target channel, wherein the feedback information comprises second identification related information which is used for identifying a terminal with successful data transmission on the first time-frequency resource;

wherein the target channel comprises a PDCCH and/or a PDSCH.

Optionally, the transmission assistance information comprises at least one of the following information: the time advance adjustment quantity of the terminal corresponding to the successful data transmission; power control parameters of the terminal corresponding to successful data transmission; first indication information of a terminal corresponding to successful data transmission, wherein the first indication information is used for indicating establishment of RRC connection; second indication information of the terminal corresponding to the data transmission failure, wherein the second indication information is used for indicating a backoff (backoff) time setting range when the uplink data is retransmitted; adjusting the time advance of the terminal corresponding to the data transmission failure; a power ramping parameter of a terminal corresponding to the data transmission failure.

In some possible embodiments, the access network device sends the feedback information on the target channel, including:

and the access network equipment sends feedback information on the second time-frequency resource, wherein the feedback information is carried by the PDCCH.

In some possible embodiments, the sending, by the access network device, the feedback information on the second time-frequency resource includes:

the access network equipment scrambles the CRC part of the DCI through a target scrambling code sequence;

and the access network equipment sends DCI to the terminal on the second time-frequency resource, wherein the DCI carries feedback information and is carried by the PDCCH.

In some possible embodiments, the receiving, by the access network device, the feedback information sent by the access network device on the target channel includes:

the access network equipment sends scheduling information on the second time-frequency resource, the scheduling information is used for indicating the PDSCH located in the third time-frequency resource, and the scheduling information is carried by the PDCCH;

and the access network equipment sends feedback information on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

In some possible embodiments, the sending, by the access network device, the scheduling information on the second time-frequency resource includes:

and the access network equipment sends DCI to the terminal on the second time-frequency resource, wherein the DCI carries scheduling information, and the scheduling information is carried by the PDCCH.

the access network equipment sends DCI on a second time-frequency resource, the DCI comprises a preset bit and feedback information, the DCI is carried by the PDCCH, and the preset bit is a first value;

or,

the access network equipment sends DCI on a second time-frequency resource, the DCI comprises a preset bit and scheduling information, the DCI is borne by the PDCCH, the preset bit is a second value, and the scheduling information is used for indicating a PDSCH located in a third time-frequency resource; and the access network equipment sends feedback information on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

In some possible embodiments, the access network device transmits the DCI on the second time-frequency resource, including:

and the access network equipment sends the DCI after scrambling to the terminal on the second time frequency resource.

In some possible embodiments, the method further comprises:

the access network equipment configures a target scrambling sequence to the terminal; or the access network equipment determines the target scrambling code sequence according to the first time-frequency resource.

In some possible embodiments, the determining, by the access network device, the target scrambling code sequence according to the first time-frequency resource includes:

the access network equipment acquires a frequency position number f _ id and an initial subframe number t _ id of a first time-frequency resource;

and the access network equipment calculates the number of the target scrambling code sequence according to the frequency position number f _ id and the starting subframe number t _ id.

According to another aspect of the embodiments of the present disclosure, there is provided a feedback information transmission apparatus, including:

a first sending module, configured to send uplink data and first identifier-related information to the access network device on a first time-frequency resource, where the first time-frequency resource is a time-frequency resource preconfigured by the access network device, and the first identifier-related information is used to identify the terminal;

a first receiving module, configured to receive, on a target channel, feedback information sent by an access network device, where the feedback information includes second identifier-related information, and the second identifier-related information is used to identify a terminal that has successfully transmitted data on a first time-frequency resource;

wherein the target channel comprises a PDCCH and/or a PDSCH.

Optionally, the transmission assistance information comprises at least one of the following information: the time advance adjustment amount of the terminal corresponding to the successful data transmission; power control parameters of the terminal corresponding to successful data transmission; first indication information of a terminal corresponding to successful data transmission, wherein the first indication information is used for indicating RRC connection; second indication information of the terminal corresponding to the data transmission failure, wherein the second indication information is used for indicating a backoff (backoff) time setting range when the uplink data is retransmitted; adjusting the time advance of the terminal corresponding to the data transmission failure; a power ramping parameter of a terminal corresponding to the data transmission failure.

In some possible embodiments, the first receiving module is configured to receive, on the second time-frequency resource, feedback information sent by the access network device, where the feedback information is carried by the PDCCH.

In some possible embodiments, the first processing module is configured to descramble a CRC portion of the DCI using the target scrambling sequence on the second time-frequency resource, resulting in the DCI comprising the feedback information.

In some possible embodiments, the first receiving module is configured to receive scheduling information on the second time-frequency resource, where the scheduling information is used to indicate a third time-frequency resource located on the PDSCH, and the scheduling information is carried by the PDCCH;

and the first receiving module is configured to receive feedback information sent by the access network equipment on the third time-frequency resource, and the feedback information is carried by the PDSCH.

In some possible embodiments, the apparatus further includes a first processing module configured to descramble a CRC portion of the DCI using the target scrambling sequence on a second time-frequency resource, resulting in a DCI containing the scheduling information.

In some possible embodiments, the first receiving module is configured to receive DCI on the second time-frequency resource, where the DCI includes preset bits, and the DCI is carried by a PDCCH;

optionally, the first receiving module is configured to obtain the feedback information from the DCI when the preset bit is the first value;

the first receiving module is configured to obtain scheduling information from the DCI when the preset bit is the second value, where the scheduling information is used to indicate the PDSCH located in the third time-frequency resource; and receiving feedback information sent by the access network equipment on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

In some possible embodiments, the apparatus further includes a first processing module configured to descramble a CRC portion of the DCI using the target scrambling sequence on a second time-frequency resource, resulting in a DCI containing preset bits.

In some possible embodiments, the first receiving module is configured to receive a target scrambling code sequence configured by the access network device; or, a first processing module configured to determine a target scrambling code sequence according to the first time-frequency resource.

In some possible embodiments, the first processing module is configured to obtain a frequency position number f _ id and a starting subframe number t _ id of the first time-frequency resource; and calculating the number of the scrambling code sequence according to the frequency position number f _ id and the starting subframe number t _ id.

the second receiving module is configured to receive uplink data and first identification related information sent by the terminal on a first time-frequency resource, wherein the first time-frequency resource is a time-frequency resource preconfigured by the access network device, and the first identification related information is used for identifying the terminal;

a second sending module, configured to send feedback information on the target channel, where the feedback information includes second identifier-related information, and the second identifier-related information is used to identify a terminal that has successfully transmitted data on the first time-frequency resource;

wherein the target channel comprises a PDCCH and/or a PDSCH.

Optionally, the transmission assistance information comprises at least one of the following information: the time advance adjustment amount of the terminal corresponding to the successful data transmission; power control parameters of the terminal corresponding to successful data transmission; first indication information of a terminal corresponding to successful data transmission, wherein the first indication information is used for indicating establishment of RRC connection; second indication information of the terminal corresponding to the data transmission failure, wherein the second indication information is used for indicating a backoff (backoff) time setting range when the uplink data is retransmitted; adjusting the time advance of the terminal corresponding to the data transmission failure; a power ramping parameter of a terminal corresponding to the data transmission failure.

In some possible embodiments, the second transmitting module is configured to transmit feedback information on a second time-frequency resource, the feedback information being carried by the PDCCH.

In some possible embodiments, the apparatus further comprises a second processing module configured to scramble a CRC portion of the DCI with the target scrambling sequence;

and the second sending module is configured to send DCI to the terminal on the second time-frequency resource, the DCI carries the feedback information, and the DCI is carried by the PDCCH.

In some possible embodiments, the second transmitting module is configured to transmit scheduling information on the second time-frequency resource, where the scheduling information is used to indicate a PDSCH located on a third time-frequency resource, and the scheduling information is carried by a PDCCH;

a second transmitting module configured to transmit feedback information on the third time-frequency resource, the feedback information being carried by the PDSCH.

In some possible embodiments, the second processing module is configured to scramble a CRC portion of the DCI with the target scrambling sequence;

and the second sending module is configured to send DCI to the terminal on the second time-frequency resource, wherein the DCI carries scheduling information, and the scheduling information is carried by the PDCCH.

In some possible embodiments, the second sending module is configured to send DCI on the second time-frequency resource, where the DCI includes a preset bit and feedback information, the DCI is carried by the PDCCH, and the preset bit is a first value;

or,

the second sending module is configured to send DCI on a second time-frequency resource of the PDCCH, the DCI comprises a preset bit and scheduling information, the DCI is carried by the PDCCH, the preset bit is a second value, and the scheduling information is used for indicating a PDSCH located in a third time-frequency resource; and the access network equipment sends feedback information on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

In some possible embodiments, when the preset bit is the second value, the feedback information includes second identification related information and transmission assistance information, and the transmission assistance information is information for assisting transmission of subsequent uplink data.

and the second sending module is configured to send the scrambled DCI to the terminal on a second time-frequency resource.

In some possible embodiments, the second processing module is configured to configure the terminal with a target scrambling sequence; or, the second processing module is configured to determine the target scrambling code sequence according to the first time-frequency resource.

In some possible embodiments, the second processing module is configured to obtain a frequency position number f _ id and a starting subframe number t _ id of the first time-frequency resource; and calculating the number of the first scrambling code sequence according to the frequency position number f _ id and the starting subframe number t _ id.

According to another aspect of the embodiments of the present disclosure, there is provided a terminal, including:

a processor;

a transceiver coupled to the processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to load and execute executable instructions to implement the feedback information transmission method of the above aspect.

According to another aspect of the embodiments of the present disclosure, there is provided an access network device, including:

a processor;

a transceiver coupled to the processor;

a memory for storing processor-executable instructions;

According to another aspect of the embodiments of the present disclosure, there is provided a computer-readable storage medium having at least one instruction, at least one program, a set of codes, or a set of instructions stored therein, which is loaded and executed by the processor to implement the feedback information transmission method according to the above aspect.

The technical scheme provided by the embodiment of the disclosure at least comprises the following beneficial effects:

and sending uplink data and first identification related information on a pre-configured first time-frequency resource through the terminal, wherein the first identification related information is used for identifying the terminal. The access network equipment receives uplink data and first identification related information sent by the terminal on a pre-configured first time-frequency resource and sends feedback information on a target channel, so that the technical problem that the base station cannot transmit HARQ feedback information to the terminal due to the fact that C-RNTI (radio network temporary identifier) distributed in a random access process does not exist when the terminal sends the uplink data to the base station by using the authorization-free uplink scheduling is solved. The terminal automatically provides the first identification related information to the access network equipment in the process of the authorization-free uplink scheduling transmission, and the access network equipment performs HARQ feedback by using the first identification related information provided by the terminal, so that an HARQ feedback mechanism under the authorization-free uplink scheduling transmission scene is realized.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a signaling interaction diagram of a contention-based random access procedure in LTE;

fig. 2 is a signaling interaction diagram of scheduling transmission in an unlicensed uplink in the related art;

fig. 3 is a schematic diagram illustrating an implementation environment in which a feedback information transmission method according to an example embodiment is involved;

fig. 4 is a flow chart illustrating a method of feedback information transmission according to an example embodiment;

fig. 5 is a flow chart illustrating a method of feedback information transmission according to an example embodiment;

fig. 6 is a flow chart illustrating a method of feedback information transmission according to an example embodiment;

fig. 7 is a flow chart illustrating a method of feedback information transmission according to an example embodiment;

fig. 8 is a flow chart illustrating a method of feedback information transmission according to an example embodiment;

fig. 9 is a block diagram illustrating a feedback information transmission apparatus according to an example embodiment;

fig. 10 is a block diagram illustrating a feedback information transmission apparatus according to an example embodiment;

FIG. 11 is a block diagram illustrating an apparatus for feedback information transmission in accordance with an example embodiment;

fig. 12 is a block diagram illustrating a feedback information transmission system in accordance with an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Under the scene of transmission of the internet of things in the 5G NR system, the data volume of uplink data transmitted to the base station by the terminal each time is small. If the traditional LTE data transmission flow is followed, more time delay is consumed. Illustratively, as shown in fig. 1, the random access procedure in the LTE system is divided into four steps: first, a User Equipment (UE) randomly selects a preamble sequence and transmits the preamble sequence to an evolved node B (eNB) on a Random Access Channel (RACH); secondly, the eNB sends a random access response to the UE in a downlink after detecting that the preamble sequence is sent, wherein the random access response at least comprises the following information, such as the received number of the preamble sequence, timing adjustment information, uplink resource position indication information allocated to the UE and a temporarily allocated C-RNTI; step three, after receiving the random access response, the UE sends a message 3 on the allocated uplink resource according to the indication; and fourthly, the eNB receives the message 3 of the UE and returns a conflict resolution message to the UE which is successfully accessed. The random access procedure described above will introduce a huge signalling overhead. The resources occupied by signaling transmission are far larger than those occupied in the transmission scene of the internet of things. Therefore, for this scenario, unlicensed uplink scheduling is introduced in the 5G NR system, as shown in fig. 2. That is, after the terminal wakes up, the uplink transmission can be automatically performed on the uplink transmission resource configured in advance by the base station without performing a random access process and receiving uplink scheduling of the base station. The uplink transmission resource is a transmission resource on an unlicensed spectrum.

After the terminal finishes transmitting the uplink data, it needs to know whether the current transmission is successful, and needs a corresponding HARQ mechanism for support. HARQ in the LTE system is carried by a PDCCH special for a user, CRC in DCI in the PDCCH is scrambled by C-RNTI special for a terminal, and UE judges whether the transmission is successful or not by judging whether a New-data Indicator (NDI) in the DCI is overturned or not. But the conventional HARQ mechanism cannot be applied to the above-mentioned unlicensed uplink scheduling. One reason is that in the unlicensed uplink scheduling, multiple users may transmit resources in the same resource, and it is difficult to determine which user has successful data transmission only depending on the inversion of NDI; the second reason is that the traditional HARQ feedback depends on C-RNTI scrambling special for the user, wherein the C-RNTI is configured for the user by the access network equipment in the random access process, but the random access process is omitted by the authorization-free scheduling, so that the PDCCH for bearing the HARQ cannot depend on the C-RNTI scrambling. In addition, in the unlicensed uplink scheduling, some additional information needs to be indicated, for example, whether a user who successfully transmits uplink data needs to be switched to a connected state or not, so as to facilitate receiving downlink data; whether the user who does not successfully transmit the uplink data needs to provide auxiliary information to facilitate the next data transmission. Therefore, in the unlicensed uplink scheduling, the HARQ mechanism needs to be redesigned.

In order to solve the above problem, in the embodiment of the present disclosure, when the terminal sends uplink data in the unlicensed uplink scheduling process, the terminal simultaneously provides the access network device with the first identifier-related information, where the first identifier-related information is used to identify the terminal. Then, the access network device performs HARQ feedback according to the first identifier-related information and whether the uplink data is successfully transmitted. Reference is made schematically to the following examples:

fig. 3 is a schematic structural diagram of a mobile communication system according to an embodiment of the present application. The mobile communication system may be a 5G system, also called NR system. The mobile communication system includes: access network equipment 301 and a terminal 302.

The access network device 301 may be a base station. For example, the base station may be a base station (gNB) adopting a centralized distributed architecture in a 5G system. When the access network device 301 adopts a centralized Distributed architecture, it generally includes a Centralized Unit (CU) and at least two Distributed Units (DUs). A Packet Data Convergence Protocol (PDCP) layer, a Radio Link layer Control Protocol (RLC) layer, and a Media Access Control (MAC) layer are provided in the central unit; a Physical (PHY) layer protocol stack is disposed in the distribution unit, and a specific implementation manner of the access network device 301 is not limited in this embodiment. Optionally, the access network device may further include a Home base station (Home eNB, HeNB), a Relay (Relay), a Pico base station Pico, and the like.

The access network device 301 and the terminal 302 establish a wireless connection over a wireless air interface. Optionally, the wireless air interface is a wireless air interface based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a New Radio (NR); alternatively, the wireless air interface may be a wireless air interface based on a 5G next generation mobile communication network technology standard.

Terminal 302 may refer to a device that provides voice and/or data connectivity to a user. The terminal may communicate with one or more core networks via a Radio Access Network (RAN), and the terminal 302 may be a mobile terminal such as a mobile telephone (or "cellular" telephone) and a computer having a mobile terminal, such as a portable, pocket, hand-held, computer-included, or vehicle-mounted mobile device. For example, a Subscriber Unit (Subscriber Unit), a Subscriber Station (Subscriber Station), a Mobile Station (Mobile), a Remote Station (Remote Station), an Access Point (Access Point), a Remote Terminal (Remote Terminal), an Access Terminal (Access Terminal), a User equipment (User Terminal), a User Agent (User Agent), a User Device (User Device), or a User Terminal (User equipment).

It should be noted that, in the mobile communication system shown in fig. 3, a plurality of access network devices 301 and/or a plurality of terminals 302 may be included, and fig. 3 illustrates an access network device 301 and a terminal 302, but this embodiment is not limited thereto.

Fig. 4 is a flowchart illustrating a feedback information transmission method according to an exemplary embodiment, the feedback information transmission method being applied to the mobile communication system illustrated in fig. 3, as illustrated in fig. 4, the method including the steps of:

in step 401, the terminal sends uplink data and first identifier-related information to the access network device on a first time-frequency resource, where the first time-frequency resource is a time-frequency resource pre-configured by the access network device, and the first identifier-related information is used to identify the terminal;

optionally, the first identification related information is implemented in any one of the following manners:

-a portion of bits in the upstream transmission data;

-Identification information of the terminal, such as an International Mobile Subscriber identity Number (IMSI);

-a part of bits in the identification information of the terminal, such as the last X bits of the IMSI, X being an integer greater than or equal to 1 and less than 48.

The first identity-related information is a function value, such as IMSI mod Y, of the identity information of the terminal mapped by a function. Taking Y as 8 as an example, the remainder Y obtained by dividing the IMSI by 8, the first identifier-related information is Y.

The first identity-related information is a random number generated by the terminal, such as a random number generated by the terminal randomly by Z bit, where Z is an integer no less than 1.

In step 402, the access network device receives uplink data and first identifier-related information sent by the terminal on a first time-frequency resource, where the first identifier-related information is used to identify the terminal.

In step 403, the access network device sends feedback information on the target channel, where the feedback information includes second identifier-related information;

wherein the target channel comprises a PDCCH and/or a PDSCH.

In some embodiments, the access network device sends feedback information on the target channel, the feedback information including one or more second identification-related information. The second identification related information is used for identifying the terminal with successful data transmission on the first time-frequency resource.

Optionally, when the uplink data of the terminal is successfully sent, there is a second identifier-related information in the feedback information that is the same as the first identifier-related information.

In step 404, the terminal receives feedback information sent by the access network device on the target channel, where the feedback information includes second identifier-related information, and the second identifier-related information is used to identify a terminal that has successfully transmitted data on the first time-frequency resource.

In summary, in the feedback information transmission method provided in this embodiment, the terminal sends the uplink data and the first identifier-related information on the preconfigured first time-frequency resource, where the first identifier-related information is used to identify the terminal. And the terminal receives feedback information sent by the access network equipment on a target channel, wherein the feedback information comprises second identification related information, and the second identification related information is used for identifying the terminal with successful data transmission on the first time-frequency resource. The technical problem that the base station cannot transmit HARQ feedback information to the terminal due to the fact that the C-RNTI allocated in the random access process does not exist when the terminal transmits uplink data to the base station by the authorization-free uplink scheduling is solved. The terminal automatically provides the first identification related information to the access network equipment in the process of the authorization-free uplink scheduling transmission, and the access network equipment performs HARQ feedback by using the first identification related information provided by the terminal, so that an HARQ feedback mechanism under the authorization-free uplink scheduling transmission scene is realized.

In some embodiments of the present disclosure, the feedback information carrying manner includes at least three types:

the first mode is as follows: feedback information is carried on the PDCCH;

the second mode is as follows: feedback information is carried on the PDSCH;

the third mode is as follows: the feedback information is selectively carried on the PDCCH or PDSCH depending on the actual transmission situation.

Three embodiments are adopted below to respectively describe three implementation manners of the feedback information transmission method in detail.

On the basis of the method embodiment in fig. 4, fig. 5 shows a flowchart of a feedback information transmission method provided by another exemplary embodiment, where the method carries feedback information on a PDCCH, and the method includes the following steps:

in step 501, the access network device pre-configures one or more time-frequency resources for unlicensed uplink scheduling to the terminal.

Optionally, the access network device sends configuration resource information to the terminal through a high-level signaling, where the configuration resource information is used to configure one or more time-frequency resources for the unlicensed uplink scheduling. The high-level signaling may be user-specific signaling or system broadcast.

The configuration resource information is used for indicating one or more time-frequency resources available for the unlicensed uplink scheduling. Optionally, the configuration resource information includes frequency information and/or time domain information of the one or more time frequency resources. Optionally, the one or more time-frequency resources are resources for Internet of Things (IoT) transmission.

The frequency domain information comprises the initial position and the number of the frequency domain units, or the serial number of the frequency domain units; the time domain information includes the sequence number of the time domain unit, and the like.

In some embodiments, the access network equipment further configures the terminal with the scrambling sequence through higher layer signaling. Illustratively, the scrambling code sequence corresponds to a time-frequency resource of the unlicensed uplink scheduling, such as scrambling code sequence 1 corresponding to time-frequency resource a and scrambling code sequence 2 corresponding to time-frequency resource B. Optionally, the configuration time of the configuration resource information and the scrambling code sequence are the same or different, and/or the higher layer signaling used for configuring the resource information and the scrambling code sequence are the same or different.

In step 502, the terminal sends uplink data and first identifier related information on a first time-frequency resource, where the first time-frequency resource is a time-frequency resource pre-configured by the access network device, and the first identifier related information is used to identify the terminal.

And the terminal receives the configuration resource information of the access network equipment and acquires the frequency domain information and/or the time domain information of one or more time frequency resources of the authorization-free uplink scheduling from the configuration resource information.

When there is an uplink data transmission requirement, the terminal randomly selects or selects the first time-frequency resource used this time according to a policy from the plurality of first time-frequency resources, and the selection manner of the first time-frequency resource is not limited in this embodiment.

In step 503, the access network device receives, on the first time-frequency resource, the uplink data and the first identifier-related information sent by the terminal, where the first identifier-related information is used to identify the terminal.

After receiving the uplink data, the access network equipment generates feedback information according to whether the uplink data is successfully received or not. Illustratively, when the uplink data is successfully received, the access network device adds first identifier-related information corresponding to the uplink data to the feedback information as second identifier-related information in the feedback information, where the second identifier-related information is used to identify a terminal that successfully transmits the uplink data; when the uplink data reception fails, the access network device does not add the first identifier-related information corresponding to the uplink data to the feedback information.

Because the time-frequency resources on the unlicensed spectrum are used by a plurality of terminals in a competitive manner, more than two terminals may simultaneously transmit uplink data on the first time-frequency resource, and at this time, the uplink data of one part of terminals may be successfully transmitted, and the uplink data of the other part of terminals may be unsuccessfully transmitted; or the uplink data of all the terminals are successfully sent; or, the uplink data of all the terminals fails to be transmitted.

When the uplink data of one part of the terminals are successfully sent and the uplink data of the other part of the terminals are unsuccessfully sent, the access network equipment adds the first identification related information of the terminal with successfully sent uplink data to the feedback information. For example, when a terminal a, a terminal B, and a terminal C transmit uplink data on a first time-frequency resource at the same time, where the terminal a and the terminal C successfully transmit the uplink data, feedback information sent by the access network device includes two pieces of second identifier-related information: identification related information of terminal a, and identification related information of terminal C.

When the uplink data of all the terminals are successfully sent, the access network equipment adds the first identification related information of all the terminals sending the uplink data on the first time-frequency resource to the feedback information. At this time, the second identification-related information in the feedback information is plural.

And when the uplink data of all the terminals are failed to be sent, the access network equipment does not generate the second identification related information.

In step 504, the access network device sends feedback information on the second time-frequency resource, where the feedback information is carried by the PDCCH, and the feedback information includes second identifier-related information.

The second time frequency resource and the first time frequency resource have a corresponding relation. Optionally, the second time-frequency resource has a corresponding relationship with the first time-frequency resource in a time domain, or the second time-frequency resource has a corresponding relationship with the first time-frequency resource in a frequency domain.

In some embodiments, when a plurality of terminals simultaneously transmit uplink data and the first identity-related information on the first time-frequency resource, the feedback information may include a plurality of second identity-related information.

Optionally, the access network device generates DCI carrying the feedback information, and then scrambles the CRC part of the DCI by the target scrambling sequence; and then the DCI is sent to the terminal on the second time frequency resource.

In some embodiments, the access network device may determine a target scrambling code sequence used for scrambling this time according to configuration information of the scrambling code sequence; in other embodiments, the access network device determines the target scrambling code sequence according to the first time-frequency resource, that is, dynamically calculates the target scrambling code sequence used this time according to the time-frequency position of the first time-frequency resource. Illustratively, the access network device obtains a frequency position number f _ id and a starting subframe number t _ id of the first time-frequency resource. Wherein, the frequency position number f _ id is, for example, a narrowband number, or a Physical Resource Block (PRB) number; and the access network equipment calculates the number of the target scrambling code sequence according to the frequency position number f _ id and the starting subframe number t _ id. For example, the access network device obtains the number of the target scrambling code sequence by calculation according to 10 × f _ id +1+ t _ id.

In step 505, the terminal receives feedback information sent by the access network device on a second time-frequency resource, where the feedback information is carried by the PDCCH.

In some embodiments, the terminal descrambles the CRC portion of the DCI using the target scrambling sequence on the second time-frequency resource to obtain the DCI containing the feedback information.

In some embodiments, the terminal receives the scrambling code sequence configured by the access network device in advance. Optionally, the access network device configures a scrambling sequence for the terminal through a high-level signaling; then, the terminal determines the target scrambling code sequence used by the descrambling according to the configuration information of the scrambling code sequence.

In some embodiments, the terminal determines the target scrambling code sequence according to the first time-frequency resource, that is, dynamically calculates the target scrambling code sequence used this time according to the time-frequency position of the first time-frequency resource. In some embodiments, the terminal obtains the frequency position number f _ id and the starting subframe number t _ id of the first time-frequency resource. Wherein, the frequency position number f _ id is, for example, a narrowband number, or a Physical Resource Block (PRB) number; and the terminal calculates the number of the target scrambling code sequence according to the frequency position number f _ id and the starting subframe number t _ id. Illustratively, the terminal calculates the number of the scrambling code sequence according to 10 × f _ id +1+ t _ id.

After reading the feedback information from the DCI, if second identification related information in the feedback information comprises first identification related information of the current terminal, the terminal determines that the current uplink data transmission is successful, and starts to transmit the next uplink data or ends to transmit; if the second identification related information in the feedback information does not include the first identification related information of the current terminal, or the feedback information is not received, the terminal considers that the uplink data transmission of this time fails, and retransmits the uplink data of this time, or tries to transmit the uplink data of this time again after the backoff specified duration.

In summary, in the feedback information transmission method provided in this embodiment, the terminal sends the uplink data and the first identifier-related information on the preconfigured first time-frequency resource, where the first identifier-related information is used to identify the terminal. And the terminal receives the feedback information sent by the access network equipment on the PDCCH. The technical problem that the base station cannot transmit HARQ feedback information to the terminal due to the fact that the C-RNTI allocated in the random access process does not exist when the terminal transmits uplink data to the base station by the authorization-free uplink scheduling is solved. The terminal automatically provides the first identification related information to the access network equipment in the process of the authorization-free uplink scheduling transmission, and the access network equipment performs HARQ feedback by using the first identification related information provided by the terminal, so that an HARQ feedback mechanism under the authorization-free uplink scheduling transmission scene is realized.

On the basis of the method embodiment of fig. 4, fig. 6 shows a flowchart of a feedback information transmission method provided by another exemplary embodiment, where the method includes the following steps:

in step 601, the access network device pre-configures one or more time-frequency resources for unlicensed uplink scheduling to the terminal.

The implementation process of this step can refer to the description of step 501 above.

In step 602, the terminal sends uplink data and first identifier related information on a first time-frequency resource, where the first time-frequency resource is a time-frequency resource pre-configured by the access network device, and the first identifier related information is used to identify the terminal.

The implementation process of this step can refer to the description of step 502 above.

In step 603, the access network device receives, on the preconfigured first time-frequency resource, the uplink data and the first identifier-related information sent by the terminal, where the first identifier-related information is used to identify the terminal.

In step 604, the access network device sends scheduling information on the second time-frequency resource, where the scheduling information is carried by the PDCCH.

The scheduling information is used to indicate the PDSCH located in the third time-frequency resource. Optionally, the scheduling information also carries other information for assisting in receiving the feedback information, such as a Modulation and Coding Scheme (MCS), which is not limited in this application. Optionally, the scheduling information is carried in DCI.

In some embodiments, the access network device scrambles the CRC portion of the DCI with the target scrambling sequence; and the access network equipment sends DCI to the terminal on the second time-frequency resource, wherein the DCI carries scheduling information and is borne on the PDCCH.

In step 605, the terminal receives scheduling information on the second time-frequency resource, where the scheduling information is used to indicate the PDSCH located on the third time-frequency resource.

In some embodiments, the terminal descrambles the CRC portion of the DCI using the target scrambling sequence on the second time-frequency resource to obtain the DCI containing the scheduling information.

In some embodiments, the terminal determines the target scrambling code sequence according to the first time-frequency resource, that is, dynamically calculates the target scrambling code sequence used this time according to the time-frequency position of the first time-frequency resource. In some embodiments, the terminal obtains the frequency position number f _ id and the starting subframe number t _ id of the first time-frequency resource. Wherein, the frequency position number f _ id is, for example, a narrowband number, or a Physical Resource Block (PRB) number; and the terminal calculates the number of the target scrambling code sequence according to the frequency position number f _ id and the starting subframe number t _ id. Illustratively, the terminal obtains the number of the target scrambling code sequence by calculation according to 10 × f _ id +1+ t _ id.

In step 606, the access network device sends feedback information to the terminal on the third time-frequency resource, where the feedback information includes second identifier-related information, and the feedback information is carried by the PDSCH.

In step 607, the terminal receives the feedback information sent by the access network device on the third time-frequency resource.

After feedback information is acquired from the PDSCH, if second identification related information in the feedback information comprises first identification related information of the current terminal, the terminal determines that the current uplink data transmission is successful, and starts to transmit the next uplink data or ends to transmit; if the second identifier-related information in the feedback information does not include the first identifier-related information of the current terminal, or the feedback information is not received, the terminal considers that the uplink data transmission of this time fails, and retransmits the uplink data of this time, or tries to transmit the uplink data of this time again after retreating for a specified time.

In summary, in the feedback information transmission method provided in this embodiment, the terminal sends the uplink data and the first identifier-related information on the preconfigured first time-frequency resource. And the terminal receives scheduling information on the second time-frequency resource of the PDCCH and receives the PDSCH containing the feedback information on the third time-frequency resource according to the scheduling information. The feedback information includes second identification related information, and the second identification related information is used for identifying a terminal with successful data transmission on the first time-frequency resource. The technical problem that the base station cannot transmit HARQ feedback information to the terminal due to the fact that the C-RNTI allocated in the random access process does not exist when the terminal transmits uplink data to the base station by the authorization-free uplink scheduling is solved. The terminal automatically provides the first identification related information to the access network equipment in the process of the authorization-free uplink scheduling transmission, and the access network equipment performs HARQ feedback by using the first identification related information provided by the terminal, so that an HARQ feedback mechanism under the authorization-free uplink scheduling transmission scene is realized.

Since the PDSCH can carry a larger amount of data, this embodiment can transmit feedback information with a larger amount of data to the terminal by the access network device, compared with the embodiment of fig. 5.

Based on the method embodiment of fig. 4, the feedback information transmission manner of fig. 5 and the feedback information transmission manner of fig. 6 may be implemented in combination, and the access network device selects to use the feedback information transmission manner of fig. 5 or the feedback information transmission manner of fig. 6 as appropriate. Referring to fig. 7, fig. 7 shows a flowchart of a feedback information transmission method provided by another exemplary embodiment, the method selectively carrying feedback information in a PDCCH or a PDSCH, the method comprising the steps of:

in step 701, the access network device pre-configures one or more time-frequency resources for unlicensed uplink scheduling to the terminal.

In step 702, the terminal sends uplink data and first identifier-related information on a first time/frequency resource, where the first identifier-related information is used to identify the terminal.

In step 703, the access network device receives, on the first time-frequency resource, the uplink data and the first identifier-related information sent by the terminal, where the first identifier-related information is used to identify the terminal.

The implementation process of this step can refer to the description of step 503 above.

Unlike the embodiments of fig. 5 and 6, the access network device may dynamically choose to carry the feedback information on the PDCCH or PDSCH.

The dynamic selection may be determined according to the number of available resources of the PDCCH and the PDSCH, for example, if the PDCCH is idle, the feedback information is selected to be carried on the PDCCH; and if the PDSCH is idle, the feedback information is selected to be carried on the PDCCH.

The dynamic selection may also be determined according to the data amount of the feedback information, for example, when the data amount of the feedback information is smaller than a threshold, the feedback information is selected to be carried on the PDCCH; and when the data quantity of the feedback information is larger than a threshold value, the feedback information is selected to be carried on the PDSCH.

The dynamic selection may also be determined according to a data type included in the feedback information, for example, when the feedback information includes only the second identification-related information, the feedback information is selected to be carried on the PDCCH; and when the feedback information simultaneously comprises the second identification related information and other information, selecting to carry the feedback information on the PDSCH.

Unlike the embodiments of fig. 5 and 6, the present embodiment further adds a preset bit to the DCI. When the preset bit is a first value, the preset bit is used for indicating that the feedback information is loaded on the PDCCH; and when the preset bit is the second value, the preset bit is used for indicating that the feedback information is carried on the PDSCH. In some embodiments, the preset bit is 1 bit specified in the DCI, and the first value is 1 and the second value is 0, or the first value is 0 and the second value is 1.

In step 704, the access network device sends DCI on the second time-frequency resource, where the DCI includes a preset bit and feedback information, and the preset bit is a first value.

When the access network equipment selects to bear the feedback information on the PDCCH, DCI carrying a preset bit and the feedback information is generated, wherein the preset bit has a first value.

Then, the access network device sends feedback information to the terminal on the second time-frequency resource, and the feedback information is carried on the PDCCH. Optionally, the access network device scrambles the CRC portion of the DCI by the target scrambling sequence, and sends the DCI to the terminal on the second time-frequency resource.

In step 705, when the preset bit is the first value, the terminal acquires the feedback information from the DCI.

Optionally, the terminal descrambles the CRC portion of the DCI using the target scrambling code sequence on the second time-frequency resource to obtain the DCI containing the feedback information.

The terminal determines the target scrambling code sequence in the same or corresponding mode with the access network equipment.

In some embodiments, the terminal determines the target scrambling code sequence according to the first time-frequency resource, that is, dynamically calculates the target scrambling code sequence used this time according to the time-frequency position of the first time-frequency resource. In some embodiments, the terminal obtains the frequency position number f _ id and the starting subframe number t _ id of the first time-frequency resource. Wherein, the frequency position number f _ id is, for example, a narrowband number, or, a PRB number; and the terminal calculates the number of the target scrambling code sequence according to the frequency position number f _ id and the starting subframe number t _ id. Illustratively, the terminal obtains the number of the target scrambling code sequence by calculation according to 10 × f _ id +1+ t _ id.

In step 706, the access network device sends DCI on the second time-frequency resource, where the DCI includes a preset bit and scheduling information, the DCI is carried by the PDCCH, and the preset bit is a second value.

And when the access network equipment selects to bear the feedback information on the PDSCH, generating DCI carrying predetermined bits and scheduling information, wherein the predetermined bits have a second value. The scheduling information is used to indicate a PDSCH on the PDSCH for a location on a third time-frequency resource.

Then, the access network device sends scheduling information to the terminal on the second time-frequency resource, and the scheduling information is carried on the PDCCH.

Optionally, the access network device scrambles the CRC portion of the DCI by the target scrambling sequence, and sends the DCI to the terminal on the second time-frequency resource.

In step 707, when the preset bit is the second value, the terminal acquires scheduling information from the DCI, where the scheduling information is used to indicate the PDSCH in the third time-frequency resource.

Optionally, the terminal descrambles the CRC portion of the DCI using the target scrambling code sequence on the second time-frequency resource to obtain the DCI containing the scheduling information.

In step 708, the access network device sends feedback information on the third time-frequency resource, where the feedback information is carried by the PDSCH.

In step 709, the terminal receives feedback information on the third time-frequency resource.

It should be noted that the steps 704-705 and 706-710 are two different branches, and only the step 704-705 or only the step 706-709 is executed in the single feedback process.

In summary, in the feedback information transmission method provided in this embodiment, the terminal sends the uplink data and the first identifier-related information on the preconfigured first time-frequency resource. And the terminal determines the terminal with successful data transmission on the first time-frequency resource according to the bit and the feedback information. The technical problem that the base station cannot transmit HARQ feedback information to the terminal due to the fact that the C-RNTI allocated in the random access process does not exist when the terminal transmits uplink data to the base station by the authorization-free uplink scheduling is solved. The terminal automatically provides the first identification related information to the access network equipment in the process of the authorization-free uplink scheduling transmission, and the access network equipment performs HARQ feedback by using the first identification related information provided by the terminal, so that an HARQ feedback mechanism under the authorization-free uplink scheduling transmission scene is realized.

In this embodiment, the feedback information is also carried in the PDCCH or PDSCH through a dynamic selection mode, and the access network device can more flexibly select a more appropriate feedback information transmission mode according to the actual transmission situation, thereby improving the flexibility of the feedback information when transmitting.

In the above description of the method embodiments, the feedback information including the second identification-related information is used as an example. However, in an optional embodiment based on the foregoing method embodiment, the feedback information sent by the access network device to the terminal further includes: the auxiliary information is transmitted.

Wherein the transmission assistance information includes, but is not limited to, at least one of the following information:

-a time advance adjustment amount for the terminal for which the data transmission was successful;

-a power control parameter of the terminal to which the data transmission was successful;

first indication information of a terminal to which data transmission is successful, the first indication information being used for indicating establishment of an RRC connection, so that the terminal can achieve more reliable data transmission;

second indication information of a terminal corresponding to the data transmission failure, where the second indication information is used to indicate a back-off time setting range when retransmitting the uplink data, so that the terminal does not affect uplink data transmission processes of other terminals that successfully transmit data within the back-off time;

-a time advance adjustment amount for a terminal corresponding to a data transmission failure;

-a power increment parameter for the terminal corresponding to the data transmission failure.

The transmission auxiliary information is used for assisting a target terminal to realize uplink data transmission with a higher success rate in a subsequent transmission process, and the target terminal refers to a terminal performing data transmission on the first time-frequency resource. The present embodiment does not limit the specific content and form of the auxiliary information transmission.

The feedback information further includes transmission auxiliary information for adjusting subsequent transmission parameters of the terminal with successful data transmission or the terminal with failed data transmission, so that the efficiency and reliability of uplink data transmission are improved.

In an alternative embodiment based on fig. 7, the access network device may dynamically select one of two feedback information transmission modes according to the data type in the feedback information. Illustratively, when the feedback information only includes the second identification related information, the feedback information transmission manner shown in fig. 5 is adopted; when the feedback information includes both the second identification related information and the auxiliary transmission information, the feedback information transmission manner shown in fig. 6 is adopted. Please refer to the following examples:

fig. 8 is a flow chart illustrating another feedback information transmission method according to an example embodiment. The method comprises the following steps:

in step 801, an access network device pre-configures one or more time-frequency resources for unlicensed uplink scheduling to a terminal.

In step 802, the terminal sends uplink data and first identifier-related information on a first time-frequency resource, where the first identifier-related information is used to identify the terminal.

In step 803, the access network device receives, on the first time-frequency resource, the uplink data and the first identifier-related information sent by the terminal, where the first identifier-related information is used to identify the terminal.

In step 804, the access network device generates feedback information, where the feedback information includes: the second identification-related information, or the second identification-related information and the transmission assistance information.

The access network device may carry the feedback information on the PDCCH or PDSCH according to the data type included in the feedback information.

Optionally, when the feedback information only includes the second identifier-related information, the feedback information is selected to be carried on the PDCCH;

optionally, when the feedback information includes both the second identification related information and the transmission assistance information, the feedback information is selected to be carried on the PDSCH.

In this embodiment, a preset bit is added to the DCI. When the preset bit is a first value, the preset bit is used for indicating that the feedback information is carried on the PDCCH, and the feedback information only comprises second identification related information; and when the preset bit is the second value, the preset bit is used for indicating that the feedback information is carried on the PDSCH, and the feedback information simultaneously comprises second identification related information and transmission auxiliary information. In some embodiments, the predetermined bit is 1 bit specified in the DCI, and the first value is 1 and the second value is 0.

In step 805, the access network device sends DCI on the second time-frequency resource, where the DCI includes a preset bit and feedback information, the preset bit is a first value, and the feedback information includes second identifier-related information.

In step 806, when the preset bit is the first value, the terminal acquires the feedback information from the DCI.

In step 807, the access network device sends DCI on the second time-frequency resource, where the DCI includes a preset bit and scheduling information, and the preset bit is a second value.

And when the access network equipment selects to bear the feedback information on the PDSCH, generating DCI carrying predetermined bits and scheduling information, wherein the predetermined bits have a second value. The scheduling information is used to indicate the PDSCH located in the third time-frequency resource.

In step 808, when the preset bit is the second value, the terminal acquires scheduling information from the DCI, where the scheduling information is used to indicate the PDSCH located in the third time-frequency resource.

In step 809, the access network device sends feedback information on the third time-frequency resource, where the feedback information is carried by the PDSCH, and the feedback information includes second identifier-related information and transmission assistance information.

In step 810, the terminal receives feedback information on a third time-frequency resource.

When the feedback information further includes the transmission auxiliary information, the terminal may further optionally perform at least one of the following steps:

when the transmission auxiliary information includes the time advance adjustment amount of the terminal corresponding to the successful data transmission and the current uplink data transmission of the terminal is successful, adjusting the sending time of the next uplink data according to the time advance adjustment amount;

when the transmission auxiliary information includes the power control parameter of the terminal corresponding to the successful transmission and the current uplink data transmission of the terminal is successful, adjusting the transmission power of the next uplink data according to the power control parameter;

when the transmission assistance information includes first indication information of the terminal corresponding to successful data transmission, and the current uplink data transmission of the terminal is successful, establishing an RRC connection with the access network device according to the first indication information, and performing next data transmission using the established RRC connection;

when the transmission assistance information includes second indication information of the terminal corresponding to the data transmission failure and the current uplink data transmission of the terminal fails, performing backoff according to a backoff time setting range in the second indication information, and attempting to retransmit the uplink data again after the backoff is finished;

when the transmission auxiliary information includes a time advance adjustment amount of the terminal corresponding to the data transmission failure and the current uplink data transmission of the terminal fails, adjusting the sending time of the next uplink data according to the time advance adjustment amount;

and when the transmission auxiliary information comprises a power increment parameter of the terminal corresponding to the data transmission failure and the current uplink data transmission of the terminal fails, adjusting the sending power of the next uplink data according to the power increment parameter.

It should be noted that, the steps 804-805 and 806-810 are two different execution branches, and only the steps 804-805 or only the steps 806-810 are executed in the single feedback process.

On the other hand, the feedback information further includes transmission auxiliary information for adjusting subsequent transmission parameters of the terminal with successful data transmission or the terminal with failed data transmission, thereby improving the efficiency of uplink data transmission.

The following are embodiments of the disclosed apparatus that may be used to perform embodiments of the disclosed methods. For details not disclosed in the embodiments of the apparatus of the present disclosure, refer to the embodiments of the method of the present disclosure.

Fig. 9 is a block diagram illustrating a feedback information transmission apparatus according to an exemplary embodiment, which may implement part or all of uplink data transmission through software, hardware, or a combination of the two. The apparatus may include:

a first sending module 901, configured to send uplink data and first identifier-related information to the access network device on a first time-frequency resource, where the first time-frequency resource is a time-frequency resource preconfigured by the access network device, and the first identifier-related information is used for identifying a terminal;

a first receiving module 903, configured to receive feedback information sent by the access network device on a target channel, where the feedback information includes second identifier-related information, and the second identifier-related information is used to identify a terminal that has successfully transmitted data on a first time-frequency resource;

wherein the target channel comprises a PDCCH and/or a PDSCH.

In some possible embodiments, the first receiving module 903 is configured to receive feedback information sent by the access network device on the second time-frequency resource, where the feedback information is carried by the PDCCH.

In some possible implementations, the apparatus provided in this embodiment further includes: a first processing module 902 configured to descramble the CRC portion of the DCI using the target scrambling sequence on the second time-frequency resource, resulting in the DCI comprising the feedback information.

In some possible embodiments, the first receiving module 903 is configured to receive scheduling information on the second time-frequency resource, where the scheduling information is used to indicate a PDSCH located on a third time-frequency resource, and the scheduling information is carried by a PDCCH;

a first receiving module 903, configured to receive feedback information sent by the access network device on the third time-frequency resource, where the feedback information is carried by the PDSCH.

In some possible embodiments, the first processing module 902 is configured to descramble the CRC portion of the DCI using the target scrambling sequence on the second time-frequency resource, resulting in the DCI containing the scheduling information.

In some possible embodiments, the first receiving module 903 is configured to receive DCI on a second time-frequency resource, where the DCI includes preset bits, and the DCI is carried by a PDCCH;

optionally, the first receiving module 903 is configured to obtain the feedback information from the DCI when the preset bit is the first value;

a first receiving module 903, configured to obtain scheduling information from the DCI when the preset bit is the second value, where the scheduling information is used to indicate the PDSCH located in the third time-frequency resource; and receiving feedback information sent by the access network equipment on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

In some possible embodiments, the first processing module 902 is configured to descramble the CRC portion of the DCI using the target scrambling sequence on the second time-frequency resource, resulting in a DCI containing preset bits.

In some possible embodiments, the first receiving module 903 is configured to receive a target scrambling code sequence configured by the access network device; alternatively, the first processing module 902 is configured to determine the target scrambling code sequence according to the first time-frequency resource.

In some possible embodiments, the first processing module 902 is configured to obtain a frequency position number f _ id and a starting subframe number t _ id of the first time-frequency resource; and calculating the number of the scrambling code sequence according to the frequency position number f _ id and the starting subframe number t _ id.

In summary, the feedback information transmission apparatus provided in this embodiment sends, through the terminal, the uplink data and the first identifier-related information on the preconfigured first time-frequency resource. And the terminal determines the terminal with successful data transmission on the first time-frequency resource according to the bit and the feedback information. The technical problem that the base station cannot transmit HARQ feedback information to the terminal due to the fact that the C-RNTI allocated in the random access process does not exist when the terminal transmits uplink data to the base station by the authorization-free uplink scheduling is solved. The terminal automatically provides the first identification related information to the access network equipment in the process of the authorization-free uplink scheduling transmission, and the access network equipment performs HARQ feedback by using the first identification related information provided by the terminal, so that an HARQ feedback mechanism under the authorization-free uplink scheduling transmission scene is realized.

Fig. 12 is a block diagram illustrating a feedback information transmission apparatus according to an exemplary embodiment, which may implement part or all of uplink data transmission through software, hardware, or a combination of the two. The apparatus may include:

a second receiving module 1001, configured to receive uplink data and first identifier-related information sent by a terminal on a first time-frequency resource, where the first time-frequency resource is a time-frequency resource preconfigured by an access network device, and the first identifier-related information is used to identify the terminal;

a second sending module 1003, configured to send feedback information on the target channel, where the feedback information includes second identifier-related information, and the second identifier-related information is used to identify a terminal that has successfully transmitted data on the first time-frequency resource;

wherein the target channel comprises a PDCCH and/or a PDSCH.

In some possible embodiments, the second transmitting module 1003 is configured to transmit feedback information on the second time-frequency resource, and the feedback information is carried by the PDCCH.

In some possible implementations, the apparatus provided in this embodiment further includes: a second processing module 1002 configured to scramble a CRC portion of the DCI with a target scrambling sequence;

the second sending module 1003 is configured to send DCI to the terminal on the second time-frequency resource, where the DCI carries the feedback information and is carried by the PDCCH.

In some possible embodiments, the second transmitting module 1003 is configured to transmit scheduling information on the second time-frequency resource, where the scheduling information is used to indicate a PDSCH located on a third time-frequency resource, and the scheduling information is carried by a PDCCH;

a second sending module 1003 configured to send feedback information on the third time-frequency resource, the feedback information being carried by the PDSCH.

In some possible embodiments, the second processing module 1002 is configured to scramble a CRC portion of the DCI with a target scrambling sequence;

the second sending module 1003 is configured to send DCI to the terminal on the second time-frequency resource, where the DCI carries scheduling information, and the scheduling information is carried by the PDCCH.

In some possible embodiments, the second sending module 1003 is configured to send downlink control information DCI on a second time-frequency resource, where the DCI includes a preset bit and feedback information, the DCI is carried by a PDCCH, and the preset bit is a first value;

or,

a second sending module 1003, configured to send DCI on a second time-frequency resource, where the DCI includes a preset bit and scheduling information, the DCI is carried by a PDCCH, the preset bit is a second value, and the scheduling information is used to indicate a PDSCH located in a third time-frequency resource; and the access network equipment sends feedback information on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

In some possible embodiments, the second processing module 1002 is configured to scramble a CRC portion of the DCI with the target scrambling sequence;

a second sending module 1003 configured to send the scrambled DCI to the terminal on the second time-frequency resource.

In some possible embodiments, the second processing module 1002 is configured to configure a target scrambling code sequence to the terminal; alternatively, the second processing module 1002 is configured to determine the target scrambling code sequence according to the first time-frequency resource.

It should be noted that, when the apparatus provided in the foregoing embodiment transmits the feedback information, only the division of each functional module is illustrated, and in practical applications, the function distribution may be completed by different functional modules according to actual needs, that is, the content structure of the device is divided into different functional modules, so as to complete all or part of the functions described above.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 11 is a block diagram illustrating an apparatus 1100 for feedback information transmission in accordance with an example embodiment. For example, the feedback information transmission device 1100 may be a terminal or an access network device. As shown in fig. 11, feedback information transmission 1100 may include: a processor 1101, a receiver 1102, a transmitter 1103, and a memory 1104. The receiver 1102, the transmitter 1103, and the memory 1104 are each coupled to the processor 1101 by a bus.

The processor 1101 includes one or more processing cores, and the processor 1101 executes software programs and modules to execute the method executed by the terminal or the base station in the feedback information transmission method provided by the embodiment of the present disclosure. The memory 1104 may be used to store software programs and modules. In particular, memory 1104 may store an operating system 11041, and application program modules 11042 required for at least one function. The receiver 1102 is configured to receive communication data transmitted by other devices, and the transmitter 1103 is configured to transmit communication data to other devices.

Fig. 12 is a block diagram illustrating a system 1200 for feedback information transmission according to an exemplary embodiment of the present application. As shown in fig. 12, the system includes an access network device 1201 and a terminal 1202.

Wherein the access network device 1201 and the terminal 1202 are configured to perform the feedback information transmission method shown in any one of fig. 4 to 8.

In an exemplary embodiment, a computer-readable storage medium is also provided, and the computer-readable storage medium is a non-volatile computer-readable storage medium, and a computer program is stored in the computer-readable storage medium, and when being executed by a processing component, the stored computer program can implement the feedback information transmission method provided by the above-mentioned embodiment of the present disclosure.

The disclosed embodiments also provide a computer program product, in which instructions are stored, and when the computer program product runs on a computer, the computer is enabled to execute the method for transmitting the feedback information provided by the disclosed embodiments.

The embodiment of the present disclosure also provides a chip, which includes a programmable logic circuit and/or a program instruction, and when the chip runs, the feedback information transmission method provided by the embodiment of the present disclosure can be executed.

It should be understood that reference to "a plurality" herein means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for transmitting feedback information, the method comprising:

a terminal sends uplink data and first identification related information to access network equipment on a first time-frequency resource, wherein the first time-frequency resource is a time-frequency resource pre-configured by the access network equipment, and the first identification related information is used for identifying the terminal;

the terminal receives feedback information sent by the access network equipment on a target channel, wherein the feedback information comprises second identification related information and transmission auxiliary information, the second identification related information is used for identifying the terminal with successful data transmission on the first time-frequency resource, and the transmission auxiliary information is used for assisting in transmitting subsequent uplink data;

the target channel comprises a Physical Downlink Control Channel (PDCCH) and/or a Physical Downlink Shared Channel (PDSCH).

2. The method of claim 1, wherein the first identity-related information comprises:

identification information of the terminal;

or, a part of bits in the uplink data;

or, a part of bits in the identification information of the terminal;

or, the identification information of the terminal passes the function value after function mapping;

or, a random number generated by the terminal.

3. The method of claim 1, wherein the transmission assistance information comprises at least one of:

the time advance adjustment amount of the terminal corresponding to the successful data transmission;

second indication information of a terminal corresponding to the data transmission failure, wherein the second indication information is used for indicating a backoff time setting range when the uplink data is retransmitted;

and the power of the terminal corresponding to the data transmission failure is increased by the power ramping parameter.

4. The method according to any one of claims 1 to 3, wherein the receiving, by the terminal, the feedback information sent by the access network device on the target channel includes:

and the terminal receives the feedback information sent by the access network equipment on a second time-frequency resource, wherein the feedback information is carried by the PDCCH.

5. The method of claim 4, wherein the receiving, by the terminal, the feedback information sent by the access network device on the second time-frequency resource comprises:

and the terminal uses a target scrambling code sequence to descramble the Cyclic Redundancy Check (CRC) part of the Downlink Control Information (DCI) on the second time-frequency resource to obtain the DCI containing the feedback information.

6. The method according to any one of claims 1 to 3, wherein the receiving, by the terminal, the feedback information sent by the access network device on the target channel includes:

the terminal receives scheduling information on a second time-frequency resource, wherein the scheduling information is used for indicating the PDSCH positioned in a third time-frequency resource and is carried by the PDCCH;

and the terminal receives the feedback information sent by the access network equipment on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

7. The method of claim 6, wherein the terminal receives scheduling information on the second time-frequency resource, comprising:

and the terminal uses a target scrambling code sequence to descramble the Cyclic Redundancy Check (CRC) part of the Downlink Control Information (DCI) on the second time-frequency resource to obtain the DCI containing the scheduling information.

8. The method according to any one of claims 1 to 3, wherein the receiving, by the terminal, the feedback information sent by the access network device on the target channel includes:

the terminal receives Downlink Control Information (DCI) on a second time-frequency resource, wherein the DCI comprises preset bits and is carried by the PDCCH;

when the preset bit is a first value, the terminal acquires the feedback information from the DCI;

when the preset bit is a second value, the terminal acquires scheduling information from the DCI, wherein the scheduling information is used for indicating the PDSCH positioned in a third time-frequency resource; and receiving the feedback information sent by the access network equipment on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

9. The method of claim 8,

when the preset bit is the second value, the feedback information further includes transmission auxiliary information, and the transmission auxiliary information is information for assisting transmission of subsequent uplink data.

10. The method of claim 8, wherein the receiving, by the terminal, the DCI on the second time-frequency resource comprises:

and the terminal uses a target scrambling code sequence to descramble the Cyclic Redundancy Check (CRC) part of the DCI on the second time-frequency resource to obtain the DCI containing the preset bit.

11. The method of claim 5, 7 or 10, further comprising:

the terminal receives the target scrambling code sequence configured by the access network equipment;

or,

and the terminal determines the target scrambling code sequence according to the first time-frequency resource.

12. The method of claim 11, wherein the terminal determines the target scrambling code sequence according to the first time/frequency resource, comprising:

the terminal acquires a frequency position number f _ id and an initial subframe number t _ id of the first time-frequency resource;

and the terminal calculates the number of the target scrambling code sequence according to the frequency position number f _ id and the starting subframe number t _ id.

13. A method for transmitting feedback information, the method comprising:

the method comprises the steps that access network equipment receives uplink data and first identification related information sent by a terminal on a first time-frequency resource, wherein the first time-frequency resource is a time-frequency resource pre-configured by the access network equipment, and the first identification related information is used for identifying the terminal;

the access network equipment sends feedback information on a target channel, wherein the feedback information comprises second identification related information and transmission auxiliary information, the second identification related information is used for identifying a terminal with successful data transmission on the first time-frequency resource, and the transmission auxiliary information is used for assisting in transmitting subsequent uplink data;

14. The method of claim 13, wherein the first identity-related information comprises:

identification information of the terminal;

or, a part of bits in the uplink data;

or, a part of bits in the identification information of the terminal;

or, a random number generated by the terminal.

15. The method of claim 13, wherein the transmission assistance information comprises at least one of:

16. The method of any of claims 13 to 15, wherein the access network device sends the feedback information on the target channel, comprising:

and the access network equipment sends the feedback information on a second time-frequency resource, wherein the feedback information is carried by the PDCCH.

17. The method of claim 16, wherein the access network device sends the feedback information on the second time-frequency resource, comprising:

the access network equipment scrambles a Cyclic Redundancy Check (CRC) part of Downlink Control Information (DCI) through a target scrambling code sequence;

and the access network equipment sends the DCI to the terminal on the second time-frequency resource, wherein the DCI carries the feedback information, and the DCI is carried by the PDCCH.

18. The method according to any one of claims 13 to 15, wherein the receiving, by the access network device, the feedback information sent by the access network device on the target channel comprises:

the access network equipment sends scheduling information on a second time-frequency resource, wherein the scheduling information is used for indicating the PDSCH positioned on a third time-frequency resource and is carried by the PDCCH;

and the access network equipment sends the feedback information on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

19. The method of claim 18, wherein the access network device transmitting scheduling information on the second time-frequency resource comprises:

and the access network equipment sends the DCI to the terminal on the second time-frequency resource, wherein the DCI carries the scheduling information, and the scheduling information is carried by the PDCCH.

20. The method of any of claims 13 to 15, wherein the access network device sends the feedback information on a target channel, comprising:

the access network equipment sends downlink control information DCI on a second time-frequency resource, wherein the DCI comprises a preset bit and the feedback information, the DCI is carried by the PDCCH, and the preset bit is a first value;

or,

the access network equipment sends the DCI on a second time-frequency resource, wherein the DCI comprises the preset bit and scheduling information, the DCI is borne by the PDCCH, the preset bit is a second value, and the scheduling information is used for indicating the PDSCH located in a third time-frequency resource; and the access network equipment sends the feedback information on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

21. The method of claim 20,

22. The method of claim 20, wherein the sending, by the access network device, the DCI on the second time-frequency resource comprises:

the access network equipment scrambles the Cyclic Redundancy Check (CRC) part of the DCI through a target scrambling sequence;

23. The method of claim 17 or 19 or 22, further comprising:

the access network equipment configures the target scrambling code sequence to the terminal;

or,

and the access network equipment determines the target scrambling code sequence according to the first time-frequency resource.

24. The method of claim 23, wherein the determining, by the access network device, the target scrambling code sequence according to the first time-frequency resource comprises:

the access network equipment acquires a frequency position number f _ id and an initial subframe number t _ id of the first time-frequency resource;

25. A feedback information transmission apparatus, characterized in that the apparatus comprises:

a first sending module, configured to send uplink data and first identification related information to an access network device on a first time-frequency resource, where the first time-frequency resource is a time-frequency resource preconfigured by the access network device, and the first identification related information is used for identifying a terminal;

a first receiving module, configured to receive, on a target channel, feedback information sent by the access network device, where the feedback information includes second identifier-related information and transmission auxiliary information, the second identifier-related information is used to identify a terminal that has succeeded in data transmission on the first time-frequency resource, and the transmission auxiliary information is used to assist in transmitting subsequent uplink data;

26. The apparatus of claim 25, wherein the first identity-related information comprises:

identification information of the terminal;

or, a part of bits in the uplink data;

or, a part of bits in the identification information of the terminal;

or, a random number generated by the terminal.

27. The apparatus of claim 25, wherein the transmission assistance information comprises at least one of:

28. The apparatus of any one of claims 25 to 27,

the first receiving module is configured to receive the feedback information sent by the access network device on a second time-frequency resource, where the feedback information is carried by the PDCCH.

29. The apparatus of claim 28, further comprising: a first processing module;

and the first processing module is configured to descramble a Cyclic Redundancy Check (CRC) part of the Downlink Control Information (DCI) by using a target scrambling code sequence on the second time-frequency resource to obtain the DCI containing the feedback information.

30. The apparatus of any one of claims 25 to 27,

the first receiving module is configured to receive scheduling information on a second time-frequency resource, the scheduling information being used for indicating the PDSCH located on a third time-frequency resource, the scheduling information being carried by the PDCCH;

the first receiving module is configured to receive the feedback information sent by the access network device on the third time-frequency resource, where the feedback information is carried by the PDSCH.

31. The apparatus of claim 30, further comprising: a first processing module;

and the first processing module is configured to descramble a Cyclic Redundancy Check (CRC) part of the Downlink Control Information (DCI) by using a target scrambling code sequence on the second time-frequency resource to obtain the DCI containing the scheduling information.

32. The apparatus of any one of claims 25 to 27,

the first receiving module is configured to receive downlink control information DCI on a second time-frequency resource, where the DCI includes preset bits, and the DCI is carried by the PDCCH;

the first receiving module is configured to obtain the feedback information from the DCI when the preset bit is a first value;

the first receiving module is configured to obtain scheduling information from the DCI when the preset bit is a second value, where the scheduling information is used to indicate the PDSCH located in a third time-frequency resource; and receiving the feedback information sent by the access network equipment on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

33. The apparatus of claim 32,

when the preset bit is a second value, the feedback information further includes transmission auxiliary information, and the transmission auxiliary information is information for assisting transmission of subsequent uplink data.

34. The apparatus of claim 32, further comprising: a first processing module;

the first processing module is configured to descramble a Cyclic Redundancy Check (CRC) part of the DCI by using a target scrambling code sequence on the second time-frequency resource to obtain the DCI including the preset bits.

35. The apparatus of claim 29, 31 or 34, further comprising:

the first receiving module is configured to receive the target scrambling code sequence configured by the access network device;

or,

the first processing module is configured to determine the target scrambling code sequence according to the first time-frequency resource.

36. The apparatus of claim 35,

the first processing module is configured to obtain a frequency position number f _ id and a starting subframe number t _ id of the first time-frequency resource; and calculating the number of the scrambling code sequence according to the frequency position number f _ id and the starting subframe number t _ id.

37. A feedback information transmission apparatus, characterized in that the apparatus comprises:

a second receiving module, configured to receive uplink data and first identifier-related information sent by a terminal on a first time-frequency resource, where the first time-frequency resource is a time-frequency resource preconfigured by an access network device, and the first identifier-related information is used to identify the terminal;

a second sending module, configured to send feedback information on a target channel, where the feedback information includes second identifier-related information and transmission auxiliary information, the second identifier-related information is used to identify a terminal that has successfully transmitted data on the first time-frequency resource, and the transmission auxiliary information is used to assist in transmitting subsequent uplink data;

wherein the target channel comprises: a physical downlink control channel PDCCH and/or a physical downlink shared channel PDSCH.

38. The apparatus of claim 37, wherein the first identity-related information comprises:

identification information of the terminal;

or, a part of bits in the uplink data;

or, a part of bits in the identification information of the terminal;

or, a random number generated by the terminal.

39. The apparatus of claim 37, wherein the transmission assistance information comprises at least one of:

40. The apparatus of any one of claims 37 to 39,

the second sending module is configured to send the feedback information on a second time-frequency resource, and the feedback information is carried by the PDCCH.

41. The apparatus of claim 40, further comprising: a second processing module;

the second processing module is configured to scramble a Cyclic Redundancy Check (CRC) part of the Downlink Control Information (DCI) through a target scrambling sequence;

the second sending module is configured to send the DCI to the terminal on the second time-frequency resource, where the DCI carries the feedback information, and the DCI is carried by the PDCCH.

42. The apparatus of any one of claims 37 to 39,

the second transmitting module is configured to transmit scheduling information on a second time-frequency resource, the scheduling information being used for indicating the PDSCH located on a third time-frequency resource, the scheduling information being carried by the PDCCH;

the second transmitting module is configured to transmit the feedback information on the third time-frequency resource, where the feedback information is carried by the PDSCH.

43. The apparatus of claim 42, wherein the apparatus comprises:

a second processing module configured to scramble a Cyclic Redundancy Check (CRC) part of the DCI by a target scrambling sequence;

the second sending module is configured to send the DCI to the terminal on the second time-frequency resource, where the DCI carries the scheduling information, and the scheduling information is carried by the PDCCH.

44. The apparatus of any one of claims 37 to 39,

the second sending module is configured to send DCI on a second time-frequency resource, where the DCI includes a preset bit and the feedback information, the DCI is carried by the PDCCH, and the preset bit is a first value;

or,

the second sending module is configured to send the DCI on a second time-frequency resource, where the DCI includes the preset bit and scheduling information, the DCI is carried by the PDCCH, the preset bit is a second value, and the scheduling information is used to indicate the PDSCH located in a third time-frequency resource; and the access network equipment sends the feedback information on the third time-frequency resource, wherein the feedback information is carried by the PDSCH.

45. The apparatus of claim 44,

and when the preset bit is a second value, the feedback information includes the second identifier-related information and transmission auxiliary information, and the transmission auxiliary information is information for assisting transmission of subsequent uplink data.

46. The apparatus of claim 44, wherein the apparatus comprises:

a second processing module configured to scramble a cyclic redundancy check, CRC, portion of the DCI with a target scrambling sequence;

the second sending module is configured to send the scrambled DCI to the terminal on the second time-frequency resource.

47. The apparatus of claim 41 or 43 or 46, wherein the apparatus comprises:

the second processing module is configured to configure the target scrambling sequence to the terminal;

or,

the second processing module is configured to determine the target scrambling code sequence according to the first time-frequency resource.

48. The apparatus of claim 47,

the second processing module is configured to obtain a frequency position number f _ id and a starting subframe number t _ id of the first time-frequency resource; and calculating the number of the first scrambling code sequence according to the frequency position number f _ id and the starting subframe number t _ id.

49. A terminal, characterized in that the terminal comprises:

a processor;

a transceiver coupled to the processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to load and execute the executable instructions to implement the feedback information transmission method of any of claims 1 to 12.

50. An access network device, the device comprising:

a processor;

a transceiver coupled to the processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to load and execute the executable instructions to implement the feedback information transmission method of any of claims 13 to 24.

51. A computer-readable storage medium, having stored therein at least one instruction, at least one program, a set of codes, or a set of instructions, which is loaded and executed by a processor to implement the feedback information transmission method according to any one of claims 1 to 24.