CN112204908A

CN112204908A - HARQ feedback processing method and device and storage medium

Info

Publication number: CN112204908A
Application number: CN202080001780.5A
Authority: CN
Inventors: 朱亚军; 洪伟; 王天佳; 李勇
Original assignee: Beijing University of Posts and Telecommunications; Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing University of Posts and Telecommunications; Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-01-08
Anticipated expiration: 2040-08-03
Also published as: WO2022027195A1; CN112204908B

Abstract

The embodiment of the disclosure provides a method and a device for processing hybrid automatic repeat request (HARQ) feedback and a storage medium. The method provided by the embodiment of the disclosure is applied to a base station, and comprises the following steps: determining HARQ feedback state information; and implicitly indicating whether to forbid the HARQ feedback to User Equipment (UE) according to the HARQ feedback state information.

Description

HARQ feedback processing method and device and storage medium

Technical Field

The present disclosure relates to the field of wireless communications, but not limited to the field of wireless communications, and in particular, to a method and an apparatus for processing HARQ feedback, and a storage medium.

Background

A Hybrid Automatic Repeat Request (HARQ) mechanism is one of the most important functions in data transmission of a cellular network, and in combination with link adaptation, HARQ can achieve efficient, reliable, and low-delay data transmission in the cellular network. Using HARQ protocol, the sending end needs to wait for the feedback of the receiving end before sending new data, if the receiving end receives a Negative Acknowledgement (NACK) feedback, the sending end needs to retransmit the data packet, otherwise, new data can be sent. The Stop-and-Wait (SAW) process in the HARQ mechanism may reduce the link throughput due to the delay of HARQ RTT (HARQ Round Trip Time).

Non-Terrestrial Network (NTN) communications, particularly satellite communications, have the characteristics of wide coverage, strong disaster resistance, and large capacity. Compared with the ground network, the NTN network has the characteristic of long transmission delay due to the long distance between two communication parties. Therefore, the stop-and-wait process of the HARQ mechanism in the related art requires a longer RTT, and thus has a larger delay with respect to a Terrestrial Network (TN).

Disclosure of Invention

The disclosure provides an access control method and device and a storage medium.

According to a first aspect of the embodiments of the present disclosure, there is provided a method for processing HARQ feedback, where the method is applied to a base station, and the method includes:

determining HARQ feedback state information;

implicitly indicating to a User Equipment (UE) whether to disable the HARQ feedback according to the HARQ feedback state information.

In some embodiments, implicitly indicating to the UE whether to disable the HARQ feedback according to the HARQ feedback status information includes:

and scrambling the DCI (Downlink Control Information) at least once through a Cell-Radio Network Temporary Identifier (C-RNTI).

In some embodiments, implicitly indicating to the UE whether to disable the HARQ feedback according to the HARQ feedback state information includes:

determining a first scrambling number for scrambling the DCI in response to the HARQ feedback state information being HARQ feedback enabled;

and issuing the DCI scrambled by the first scrambling times.

In some embodiments, the first number of scrambling times is 1.

determining a second scrambling number for scrambling the DCI in response to the HARQ feedback state information being a disable HARQ feedback;

and issuing the DCI scrambled by the second scrambling times.

In some embodiments, the second number of scrambling times is 2.

In some embodiments, scrambling the DCI at least once with the C-RNTI comprises:

in response to the HARQ feedback state information being that the HARQ feedback is forbidden, performing first scrambling on the DCI by using a C-RNTI (radio network temporary identifier); and performing secondary scrambling on the DCI by using a shift sequence obtained by shifting the C-RNTI.

In some embodiments, the shifted sequence is a sequence obtained by shifting the sequence of the C-RNTI by at least one bit.

responding to the HARQ feedback state information as forbidden HARQ feedback, and sending scheduling information of a scheduling HARQ process, wherein the scheduling information is used for scheduling the HARQ process in a forbidden HARQ process group in which the HARQ feedback is forbidden; or

And responding to the HARQ feedback state information as starting HARQ feedback, and issuing scheduling information of a scheduling HARQ process, wherein the scheduling information is used for scheduling the HARQ process in the disabled HARQ process group which enables the HARQ feedback.

In some embodiments, the method further comprises:

issuing HARQ configuration information to the UE through an RRC (Radio Resource Control) signaling, wherein the HARQ configuration information comprises at least one of the following information: the process identification of the enabled HARQ process, the process identification of the disabled HARQ process, the number of enabled HARQ processes, the number of disabled HARQ processes, the type of the process group of the enabled HARQ process, and the type of the process group of the disabled HARQ process.

issuing an activation instruction for activating a Physical Uplink Control Channel (PUCCH) resource according to the HARQ feedback state information; the PUCCH resource has a mapping relation with the HARQ feedback forbidding or starting.

In some embodiments, the activation instruction includes:

DCI or a system message SIB.

In some embodiments, the method further comprises:

issuing resource configuration parameters of the PUCCH resources before issuing the instruction; the resource configuration parameter is used for configuring the mapping relation.

In some embodiments, the activation instruction includes: index number of the PUCCH resource to be activated.

In some embodiments, the resource configuration parameters include:

indicating a configuration parameter for activating frequency domain resources in PUCCH resources for disabling and/or enabling the HARQ feedback; and/or

And indicating the configuration parameters of the time domain resources in the PUCCH resources for activating the disabling and/or the HARQ feedback.

According to a second aspect of the embodiments of the present disclosure, there is provided a method for processing HARQ feedback, where the method is applied to a terminal, and the method includes:

disabling or enabling HARQ feedback in response to whether the base station implicitly indicates that HARQ feedback is disabled.

In some embodiments, the method further comprises:

receiving DCI;

determining that the base station implicitly indicates to enable the HARQ feedback in response to the DCI descrambling times being first descrambling times; or

Determining that the base station implicitly indicates to disable HARQ feedback in response to the DCI descrambling frequency being a second descrambling frequency; wherein the second number of descrambles is different from the first number of descrambles.

In some embodiments, the method further comprises:

descrambling the DCI by using the C-RNTI;

determining the descrambling number of times that the DCI descrambling is successful.

In some embodiments, the descrambling the DCI with the C-RNTI includes:

descrambling the DCI for the first time by using a shifting sequence obtained by shifting the C-RNTI;

and responding to the failure of the first descrambling, and performing second descrambling on the DCI by using the C-RNTI.

In some embodiments, the first number of descrambles is 1; the second descrambling number is 2;

the determining the descrambling number in response to the DCI descrambling success comprises:

in response to the first descrambling success, determining the descrambling times as the first descrambling times;

and determining the descrambling times as the second descrambling times in response to the first descrambling failure and the second descrambling success.

In some embodiments, the method further comprises:

receiving scheduling information for scheduling the HARQ process;

if the received scheduling information is used for calling the HARQ process in the forbidden HARQ process group corresponding to the forbidden HARQ feedback, determining that the base station implicitly indicates to forbid the HARQ feedback;

and if the received scheduling information is used for scheduling the HARQ process in the HARQ process starting group corresponding to the HARQ feedback starting, determining that the base station invisible indication starts the HARQ feedback.

In some embodiments, the method further comprises:

and receiving RRC signaling containing the HARQ configuration information.

In some embodiments, the HARQ configuration information is at least one of: the process identification of the enabled HARQ process, the process identification of the disabled HARQ process, the number of enabled HARQ processes, the number of disabled HARQ processes, the type of the process group of the enabled HARQ process, and the type of the process group of the disabled HARQ process.

In some embodiments, the method further comprises:

receiving an activation instruction;

activating the PUCCH resources in response to the activation instruction, determining whether the base station stealth indication disables the HARQ feedback; and the PUCCH resource has a mapping relation with the HARQ feedback forbidding or starting.

In some embodiments, the activation instruction includes:

DCI or SIB.

In some embodiments, the method further comprises:

receiving resource configuration parameters of the PUCCH resources before receiving the activation instruction; the resource configuration parameter is used for configuring the mapping relation.

In some embodiments, the resource configuration parameters include:

And indicating the configuration parameters of the time domain resources in the PUCCH resources for activating the disable and/or enable of the HARQ feedback.

According to a third aspect of the embodiments of the present disclosure, there is provided an apparatus for processing HARQ feedback, where the apparatus is applied to a base station, and the apparatus includes:

a first determining module configured to determine HARQ feedback state information;

and the indicating module is configured to implicitly indicate whether to disable the HARQ feedback to the UE according to the HARQ feedback state information.

According to a fourth aspect of the embodiments of the present disclosure, there is provided an apparatus for processing HARQ feedback, where the apparatus is applied to a terminal, and the apparatus includes:

a feedback module configured to disable or enable HARQ feedback in response to whether HARQ feedback is disabled as implicitly indicated by a base station.

According to a fifth aspect of the embodiments of the present disclosure, there is provided a processing apparatus for HARQ feedback, the processing apparatus for HARQ feedback at least comprising: a processor and a memory for storing executable instructions operable on the processor, wherein:

and the processor is used for executing the executable instruction, and the executable instruction executes the steps in any HARQ feedback processing method.

According to a sixth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium having stored therein computer-executable instructions, which when executed by a processor, implement the steps in the processing method of HARQ feedback of any one of the above.

The disclosed embodiments provide a method comprising enabling and disabling HARQ feedback. The base station carries the indication for enabling or disabling the HARQ feedback in the information to be transmitted in the communication process with the terminal in an implicit mode, and implicitly indicates the terminal to enable or disable the HARQ feedback. Thus, the base station does not need to send down signaling for indicating the prohibition of HARQ feedback separately, and does not need to add signaling special for indicating the prohibition of HARQ in DCI. On one hand, if a dedicated field or character bits for indicating that HARQ is disabled are added by using signaling such as DCI and modifying a format, a bottom layer protocol of a base station and a UE needs to be reconfigured, which is compatible with a related technology and has a large signaling overhead, thereby bringing a huge technical burden. In contrast, in the embodiment of the present disclosure, the HARQ feedback is enabled or disabled by using the implicit indication such as the original interactive signaling, and the signaling format of DCI and the like does not need to be modified, so that the related technologies are compatible, and the burden brought by the technology improvement is reduced. On the other hand, the implicit indication does not need to add special signaling or a special field or character bit in signaling such as DCI, so that the signaling overhead is saved.

Drawings

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

Fig. 1 is a block diagram illustrating a wireless communication system in accordance with an exemplary embodiment;

fig. 2 is a schematic diagram illustrating a HARQ feedback mechanism according to an example embodiment;

fig. 3 is a first flowchart illustrating a method for processing HARQ feedback according to an exemplary embodiment;

fig. 4 is a flowchart illustrating a method for processing HARQ feedback according to an exemplary embodiment;

fig. 5 is a third flowchart illustrating a method for processing HARQ feedback according to an exemplary embodiment;

fig. 6 is a fourth flowchart illustrating a method for processing HARQ feedback according to an exemplary embodiment;

fig. 7 is a flowchart illustrating a method for processing HARQ feedback according to an exemplary embodiment;

fig. 8 is a sixth flowchart illustrating a method for processing HARQ feedback according to an exemplary embodiment;

fig. 9 is a seventh flowchart illustrating a method for processing HARQ feedback according to an exemplary embodiment;

fig. 10 is a flowchart illustrating an eighth method for processing HARQ feedback according to an exemplary embodiment;

fig. 11A is a flowchart illustrating a method for processing at the base station side of HARQ feedback according to an exemplary embodiment;

fig. 11B is a flowchart illustrating a terminal-side processing method of HARQ feedback according to an example embodiment;

fig. 12 is a schematic diagram illustrating the principle of partitioning groups of HARQ processes according to an example embodiment;

fig. 13A is a schematic diagram illustrating a method of determining a frequency domain location of PUCCH feedback according to an example embodiment;

fig. 13B is a diagram illustrating a method of determining a time domain position of PUCCH feedback according to an example embodiment;

fig. 14 is a first schematic structural diagram illustrating a processing apparatus for HARQ feedback according to an exemplary embodiment;

fig. 15 is a schematic structural diagram of a processing apparatus for HARQ feedback according to an exemplary embodiment;

fig. 16 is a first schematic physical structure diagram of a processing apparatus for HARQ feedback according to an exemplary embodiment;

fig. 17 is a schematic entity structure diagram of a processing apparatus for HARQ feedback according to an exemplary 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 embodiments of the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the disclosed embodiments, as detailed in the appended claims.

The terminology used in the embodiments of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the present disclosure. As used in the disclosed embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information in the embodiments of the present disclosure, such information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. The words "if" and "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination", depending on the context.

In order to better describe any embodiment of the present disclosure, an embodiment of the present disclosure is exemplarily illustrated by taking an application scenario of access control as an example.

Referring to fig. 1, a schematic structural diagram of a wireless communication system according to an embodiment of the present disclosure is shown. As shown in fig. 1, the wireless communication system is a communication system based on a cellular mobile communication technology, and may include: several terminals 11 and several base stations 12.

Terminal 11 may refer to, among other things, a device that provides voice and/or data connectivity to a user. The terminal 11 may communicate with one or more core networks via a Radio Access Network (RAN), and the terminal 11 may be an internet of things terminal, such as a sensor device, a mobile phone (or referred to as a "cellular" phone), and a computer having the internet of things terminal, and may be a fixed, portable, pocket, handheld, computer-included, or vehicle-mounted device, for example. For example, a Station (STA), a subscriber unit (subscriber unit), a subscriber Station (subscriber Station), a mobile Station (mobile), a remote Station (remote Station), an access point (ap), a remote terminal (remote terminal), an access terminal (access terminal), a user equipment (user terminal), a user agent (user agent), a user equipment (user device), or a user terminal (user equipment, terminal). Alternatively, the terminal 11 may be a device of an unmanned aerial vehicle. Alternatively, the terminal 11 may also be a vehicle-mounted device, for example, a vehicle computer with a wireless communication function, or a wireless terminal externally connected to the vehicle computer. Alternatively, the terminal 11 may be a roadside device, for example, a street lamp, a signal lamp or other roadside device with a wireless communication function.

The base station 12 may be a network side device in a wireless communication system. The wireless communication system may be a fourth generation mobile communication (4G) system, which is also called a Long Term Evolution (LTE) system; alternatively, the wireless communication system can be a 5G system, which is also called a New Radio (NR) system or a 5G NR system. Alternatively, the wireless communication system may be a next-generation system of a 5G system. Among them, the Access Network in the 5G system may be referred to as NG-RAN (New Generation-Radio Access Network, New Generation Radio Access Network).

The base station 12 may be an evolved node b (eNB) used in a 4G system. Alternatively, the base station 12 may be a base station (gNB) adopting a centralized distributed architecture in the 5G system. When the base station 12 adopts a centralized distributed architecture, it generally includes a Centralized Unit (CU) and at least two Distributed Units (DU). 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 the embodiment of the present disclosure does not limit the specific implementation manner of the base station 12.

The base station 12 and the terminal 11 may establish a wireless connection over a wireless air interface. In various embodiments, the wireless air interface is based on a fourth generation mobile communication network technology (4G) standard; or the wireless air interface is based on a fifth generation mobile communication network technology (5G) standard, for example, the wireless air interface is a new air interface; alternatively, the wireless air interface may be a wireless air interface based on a 5G next generation mobile communication network technology standard.

In some embodiments, an E2E (End to End) connection may also be established between terminals 11. Scenarios such as V2V (vehicle to vehicle) communication, V2I (vehicle to Infrastructure) communication, and V2P (vehicle to vehicle) communication in vehicle networking communication (V2X).

In some embodiments, the wireless communication system may further include a network management device 13.

Several base stations 12 are connected to a network management device 13, respectively. The network Management device 13 may be a Core network device in a wireless communication system, for example, the network Management device 13 may be a Mobility Management Entity (MME) in an Evolved Packet Core (EPC). Alternatively, the Network management device may also be other core Network devices, such as a Serving GateWay (SGW), a Public Data Network GateWay (PGW), a Policy and Charging Rules Function (PCRF), a Home Subscriber Server (HSS), or the like. The implementation form of the network management device 13 is not limited in the embodiment of the present disclosure.

Non-Terrestrial Network (NTN) communications, particularly satellite communications, have the characteristics of wide coverage, strong disaster resistance, and large capacity. The NTN can be used as a supplement to a ground network (5G network) to provide continuity services (such as maritime, high-speed rail) for M2M (Machine-to-Machine), IoT (Internet Of Things) devices and mobility platform users, so that the reliability Of the 5G network is enhanced, or to provide broadcast or multicast services directly to user devices at the edge Of the network, so that the scalability Of the 5G network is enhanced; and the system can also be operated independently to provide unique services for remote areas, islands and the like, so that network services are ubiquitous. Compared with a typical 5G network, the satellite-ground integrated NTN or the single NTN has larger influence on the coverage area, the user bandwidth, the system capacity, the service reliability or the service availability, the energy consumption, the connection density and other performances, can provide more reliable consistent service experience for users, reduces the network deployment cost of operators, and communicates the air, space, ground and sea multidimensional spaces to form an integrated ubiquitous network pattern.

Compared with the ground network, the NTN network has the characteristic of long transmission delay due to the long distance between two communication parties. For example, based on a scenario of Geostationary orbit (GEO), the maximum Round Trip delay (RTT) reaches 541.46 ms; based on a Low Earth Orbit (LEO) scenario, when the orbital height of an LEO satellite is 600 kilometers, the maximum RTT is 25.77 milliseconds.

A hybrid automatic repeat request (HARQ) mechanism is one of the most important functions in NR, which, in combination with link adaptation, can enable efficient, reliable and low-latency data transmission in a cellular network. As shown in fig. 2, using the HARQ protocol, a transmitting end (e.g., UE) may transmit data through a PDSCH (Physical Downlink Shared Channel). The sending end needs to wait for the feedback of the receiving end before sending new data, if the receiving end feeds back whether to confirm (NACK), the sending end needs to retransmit the data packet, otherwise, if the receiving end feeds back whether to confirm (ACK), the sending end sends the data packet to be able to send new data. The SAW process in the HARQ scheme reduces link throughput due to HARQ RTT delay.

In some embodiments, multiple parallel HARQ process transmissions are supported in the HARQ mechanism, i.e. the sender may initiate multiple transmissions in parallel without having to wait for the HARQ to complete. For example, 16 HARQ processes are supported to accommodate a few milliseconds of HARQ RTT in the NR.

Compared with the ground NR network, the NTN network has the characteristic of large transmission delay, and the HARQ RTT in the NTN is longer. This makes it impossible to provide fast feedback in NTN networks using HARQ mechanisms. In addition, in the above embodiment, the number of HARQ processes supported by the HARQ protocol is not enough to accommodate the transmission delay of tens of milliseconds to hundreds of milliseconds in the NTN network, which may result in the reduction of the throughput of the link.

Therefore, in the embodiment of the present disclosure, it is considered to disable HARQ feedback of at least some terminals in the NTN network, thereby reducing delay and improving overall data communication quality of the network.

In some embodiments, HARQ feedback may be disabled in the NTN network based on the UE and HARQ process configuration. For example, 1bit information is added in DCI signaling to indicate HARQ feedback, or a DCI existing field is multiplexed to indicate that HARQ feedback is disabled.

As shown in fig. 3, an embodiment of the present disclosure provides a method for processing HARQ feedback, where the method is applied to a base station, and includes:

step S101, determining HARQ feedback state information;

and step S102, implicitly indicating whether to forbid the HARQ feedback to User Equipment (UE) according to the HARQ feedback state information.

In the embodiment of the present disclosure, the HARQ feedback state information may be information indicating whether to disable HARQ feedback, including state information indicating that HARQ feedback is enabled and/or state information indicating that HARQ feedback is disabled. The base station may determine whether HARQ feedback needs to be disabled according to each HARQ process or for different UEs. For example, the base station determines that the service corresponding to the HARQ process has a higher requirement for low latency, e.g., the base station determines that the maximum latency required by the service corresponding to the HARQ process is greater than a preset latency threshold, or the requirement for data information quality is lower, and the like, e.g., the required maximum packet loss rate is greater than a preset threshold, it may be determined to disable HARQ feedback.

When the HARQ feedback is disabled, the transmitting end of the data does not need to wait for the acknowledgement message of the receiving end after transmitting a data packet, but can directly transmit the next data packet. Therefore, data transmission between the transmitting end and the receiving end saves time of stop-and-wait (SAW) between each data packet, thereby reducing delay and increasing throughput of a data link. Here, the transmitting end may be a base station or a terminal, and the receiving end may be a terminal or a base station.

It can be understood that, after the HARQ feedback is disabled, the transmitting end does not wait for the HARQ feedback of the receiving end, and therefore, the retransmission situation does not occur. Therefore, on one hand, the data transmission speed is further increased, and on the other hand, the quality of data transmission is reduced, for example, packet loss may occur. Therefore, HARQ feedback can be disabled for traffic with lower data quality requirements.

And when the base station determines that the maximum time delay of the service requirement corresponding to the HARQ process is less than or equal to a preset time delay threshold, or the requirement on the data information quality is high, if the required maximum packet loss rate is less than or equal to the preset threshold, the HARQ feedback can be started to improve the data quality of data transmission.

In the embodiment of the present disclosure, the base station indicates, in an implicit indication manner, to enable or disable HARQ feedback to the UE. Implicit indications refer to: dedicated signaling plaintext is not employed to carry indication information indicating enabling or disabling of HARQ feedback. For example, the signaling format of signaling indicating other information in clear text, the information form or the mapping relationship of the indicated other information and enabling HARQ feedback and/or disabling HARQ feedback indirectly indicate enabling HARQ feedback or disabling HARQ feedback.

For example, the scrambling mode of the DCI carrying the resource scheduling information, the paging information, and/or the activation information has a mapping relationship with disabling or enabling the harq feedback, so that the instruction of disabling or enabling the harq feedback can be completed by issuing the DCI carrying other information scrambled by different scrambling modes without additionally increasing the DCI or occupying DCI bit overhead.

The scheduling information can be used for resource scheduling; the paging information can be used for paging of the UE; the activation information may be used to activate pre-scheduled or configured transmission resources.

The different scrambling schemes include the following differences:

the scrambling times are different;

and/or the presence of a gas in the gas,

the scrambling sequences are different.

For example, with different numbers of scrambling of DCI, to represent indications to enable or disable HARQ feedback, respectively; as another example, the identification of the HARQ process is utilized to distinguish between different processes that enable or disable HARQ feedback.

The base station does not need to send the instruction for enabling or disabling the HARQ feedback to the UE independently, and does not need to add a field or an indication bit in DCI signaling. But the indication of enabling or disabling the HARQ feedback can be realized by using the corresponding relationship between different information in the signaling for indicating other information and enabling or disabling the HARQ feedback, so that the overhead of the signaling can be effectively saved. Meanwhile, the UE can be controlled to disable HARQ feedback under the condition that an HARQ feedback mechanism is not needed or the requirement on low time delay is high without changing a protocol, a signaling format and the like of information transmission between the base station and the UE, so that the data transmission rate is improved, and the delay is reduced.

and scrambling the downlink control information DCI at least once through the C-RNTI.

In the disclosed embodiments, the DCI may be scrambled using the C-RNTI. The C-RNTI is a cell radio network temporary identifier, and is a dynamic identifier which is allocated to UE successfully accessed to the network by a base station and uniquely identifies the UE in one cell.

The C-RNTI is a 16-bit sequence, and the process of scrambling by using the C-RNTI can be that the C-RNTI sequence is multiplied by the DCI to obtain the scrambled DCI.

In addition, in some implementation scenarios, the scrambling may also be performed by using sequences such as SI-RNTI (system message radio network temporary identity) and RA-RNTI (random radio network temporary identity).

In the embodiment of the present disclosure, the scrambling of the DCI with different scrambling times may be performed by performing a plurality of scrambling operations using the C-RNTI sequence, or may be performed by performing a plurality of scrambling operations using the C-RNTI sequence and the shifted or modified C-RNTI sequence.

Therefore, the DCI can be scrambled by using the C-RNTI sequence without introducing new indication information or a special scrambling sequence, so that the function of enabling or disabling HARQ feedback by implicit indication is realized.

In some embodiments, as shown in fig. 4, in the step S102, implicitly indicating to the UE whether to disable the HARQ feedback according to the HARQ feedback state information includes:

step S201, responding to the HARQ feedback state information that the HARQ feedback is started, and determining a first scrambling frequency of the scrambled DCI;

step S202, the DCI scrambled by the first scrambling times is issued.

The DCI is carried by a downlink control channel (PDCCH) and is used to send downlink control related information to the UE, including uplink and downlink resource allocation, HARQ information, power control, and the like.

Scrambling may be to perform operation processing on signals by using a predetermined sequence, and then perform transmission, so as to effectively reduce signal interference between adjacent signals. After receiving the DCI transmitted by the base station, the UE needs to perform descrambling. And if the UE successfully verifies the DCI after descrambling, the relevant indication of the base station can be obtained and processed.

In one embodiment, the DCI may be scrambled once using a predetermined sequence, and the UE may descramble once receiving the DCI. And if the UE descrambles successfully, obtaining the DCI successfully.

In this embodiment of the present disclosure, the implicit indication may be implemented by using the above procedure of scrambling DCI. That is, different numbers of scrambling times are utilized to distinguish between indications of enabling or disabling HARQ feedback.

In this embodiment of the present disclosure, the scrambling frequency corresponding to the instruction for enabling HARQ feedback may be preset to be the first scrambling frequency. The first number of scrambling times is different from a number of scrambling times for which HARQ feedback is disabled. Thus, the UE may perform descrambling at least once when receiving the DCI. And the UE can correspondingly determine the scrambling times according to the descrambling times. Therefore, if the descrambling frequency is the same as the first scrambling frequency when the descrambling is successful, the UE may know that the base station indicates to enable the HARQ feedback.

In this way, the base station may implicitly instruct the UE to enable HARQ feedback by scrambling the DCI for the first scrambling number, using the fixed format of the DCI in the existing communication protocol. Thus, no field needs to be newly added or character bits dedicated to indicating HARQ enabling or disabling need not change the format of DCI.

In some embodiments, the first number of scrambling times is 1.

In some embodiments, in step S102, implicitly indicating to the UE whether to disable the HARQ feedback according to the HARQ feedback state information includes:

step S203, responding to the HARQ feedback state information that the HARQ feedback is forbidden, and determining a second scrambling frequency for sending down the scrambled DCI, wherein the second scrambling frequency is different from the first scrambling frequency;

and step S204, issuing the DCI scrambled by the second scrambling times.

Corresponding to the indication of enabling HARQ feedback, the base station may scramble the DCI for a second scrambling number of times to indicate disabling HARQ feedback.

Correspondingly, the UE descrambles the DCI at least once, and if the descrambling times are the same as the second scrambling times when the descrambling is successful, the indication of the base station can be determined to be the HARQ feedback disabling.

In some embodiments, the second number of scrambling times is 2.

It should be noted that, in fig. 5, steps S201 to S202 and steps S203 to S204 are parallel, and when the HARQ feedback is enabled, steps S201 to S202 are executed; when the HARQ feedback is disabled, steps S203 to S204 are performed.

In some embodiments, the DCI is scrambled at least once by the C-RNTI, including:

scrambling the DCI for a first time using a C-RNTI in response to disabling the HARQ feedback; and performing secondary scrambling on the DCI by using a shift sequence obtained by shifting the C-RNTI.

In the embodiment of the present disclosure, the first scrambling number corresponding to enabling the HARQ feedback is one time, that is, when the HARQ feedback is enabled, a normal scrambling process is performed on the DCI. The HARQ related information carried in the DCI may also be used normally.

And the second scrambling times corresponding to the disabled HARQ feedback can be added with one scrambling time on the basis of the first scrambling times, namely, the scrambling is carried out twice in total.

Thus, the UE needs to perform descrambling twice to successfully descramble. That is, if the UE performs descrambling once and then succeeds in descrambling, it may be determined that the indication of the base station is HARQ feedback enabled, and if descrambling fails when performing descrambling once and then succeeds when performing descrambling again, it may be determined that the indication of the base station is HARQ feedback disabled.

In the embodiment of the present disclosure, the C-RNTI may be utilized to perform at least one bit of sequence shifting, so as to obtain the above-mentioned shifted sequence. For example, the C-RNTI sequence is a binary sequence, and 1 is added to the sequence so that each bit is changed, thereby obtaining a shifted sequence.

Thus, by simply processing the C-RNTI, two groups of different scrambling sequences before and after processing can be obtained so as to scramble DCI twice. In this way, when the UE descrambles, if the first descrambling fails, the UE uses the shift sequence to perform the second descrambling, and if the second descrambling succeeds, the indication bit of the base station disables the HARQ feedback.

In another embodiment, the scrambling sequence for second scrambling of the DCI may be: the reverse sequence of the C-RNTI, e.g., the binary sequence of the C-RNTI assigned to the UE, is negated to yield the reverse sequence. After the negation operation, the original "0" in the C-RNTI is changed to "1", and the original "1" is changed to "0".

In some embodiments, as shown in fig. 5, in the step S102, implicitly indicating to the UE whether to disable the HARQ feedback according to the HARQ feedback state information includes:

step S301, responding to the HARQ feedback state information as the forbidden HARQ feedback, issuing scheduling information of the scheduling HARQ process, wherein the scheduling information is used for scheduling the HARQ process in the forbidden HARQ process group in which the HARQ feedback is forbidden; or

Step S302, responding to the HARQ feedback state information as starting HARQ feedback, issuing scheduling information of scheduling HARQ processes, wherein the scheduling information is used for scheduling HARQ processes in the disabled HARQ process group enabling the HARQ feedback.

In the process of transmitting and receiving data between the base station and the UE, both the transmitter and the receiver generally transmit data using the stop protocol of HARQ, and the transmitter stops to wait for the acknowledgement information after transmitting a data packet. The receiving end feeds back Acknowledgement (ACK) or Negative Acknowledgement (NACK). But stops waiting for each transmission, resulting in a low throughput of the data link. Thus, multiple parallel HARQ processes may be utilized to improve overall throughput.

These processes in the same communication link together constitute the HARQ entity. Therefore, the base station can choose to schedule different HARQ processes to send data to the UE.

In the embodiment of the present disclosure, the implicit indication of disabling HARQ feedback is implemented by using the parallel HARQ processes in the HARQ entity.

In the embodiment of the present disclosure, the base station may select a part of HARQ processes as the forbidden HARQ processes, and when the base station schedules the part of the forbidden HARQ processes, the base station may simultaneously issue the scheduling information to the UE. The scheduling information may be used to identify the HARQ process, e.g., the scheduling information may include an identification of the HARQ process. Therefore, the UE may confirm whether the corresponding HARQ process belongs to a pre-agreed forbidden HARQ process through the received scheduling information.

Thus, the base station can realize the implicit indication of the disabling or enabling of the HARQ process only by scheduling different HARQ processes.

When the base station indicates that part of the HARQ processes are the conditions of forbidding HARQ feedback, the part of the processes do not need to stop waiting, so that the time delay of the part of the processes can be reduced, and the transmission efficiency of the corresponding processes can be improved for different services. Meanwhile, the overall data throughput of the communication link can be further improved, and the time delay is reduced.

By the method, the implicit indication of enabling or disabling HARQ feedback is realized by utilizing the classification of different HARQ processes. Therefore, the indication is carried out without adding special signaling, thereby saving signaling overhead and not needing to change the existing signaling format.

In this disclosure, the HARQ process further includes enabling the HARQ process, and accordingly, when the base station schedules the enabling of the HARQ process, the UE may be implicitly instructed to enable HARQ feedback. For example, for a process corresponding to a service with a high accuracy requirement on data transmission or a low requirement on delay, the HARQ process may be classified as enabled.

Therefore, when the UE determines that the received scheduling information for starting the HARQ process is according to the process number, the identification and other information carried in the scheduling information, the HARQ feedback is started.

In the embodiment of the disclosure, the base station divides the HARQ processes into the enabled HARQ process group and the disabled HARQ process group to implement implicit indication of enabling or disabling HARQ feedback, so that no additional field or character bit or other instruction needs to be added for indication. And different processing modes can be adopted for different types of HARQ processes, so that the method is favorable for flexibly controlling the HARQ processes corresponding to different service requirements.

In some embodiments, the method further comprises:

issuing HARQ configuration information to the UE through RRC signaling, wherein the HARQ configuration information comprises at least one of the following information: the process identification of the enabled HARQ process, the process identification of the disabled HARQ process, the number of enabled HARQ processes, the number of disabled HARQ processes, the type of the process group of the enabled HARQ process, and the type of the process group of the disabled HARQ process.

Here, the type of the process group in which the HARQ process is enabled may be the HARQ process group; the type of the process group for which the HARQ process is disabled may be the disabled HARQ process group.

In the embodiment of the present disclosure, before scheduling the HARQ process to be enabled or disabled, the UE may be first informed of which process identifiers correspond to the enabled HARQ process and which process identifiers correspond to the disabled HARQ process. For example, each HARQ is numbered, the UE is informed of the total number M of the HARQ, and at the same time, the first N HARQ processes belong to the enabled HARQ process group, and the remaining M-N HARQ processes belong to the disabled HARQ process group. As another example, the numbers of the enabled HARQ processes and the disabled HARQ processes are directly indicated in the HARQ configuration information.

In the embodiment of the disclosure, the base station issues HARQ configuration information to the UE by using RRC signaling to inform the UE of the grouping condition of the HARQ process, so that when the base station subsequently performs scheduling of the HARQ process, the base station only needs to schedule the HARQ process in the corresponding process group according to the indication of enabling or disabling the HARQ feedback, and thus, implicit indication of enabling or disabling the HARQ process can be achieved.

The process identification of the HARQ process enabled and the process identification of the HARQ process disabled may also directly indicate that the HARQ process belongs to the indication of HARQ enabled or disabled. For example, a discrimination is made by using one bit in the ID of HARQ, "0" means disable "1" means enable.

In an embodiment of the present disclosure, the HARQ configuration information may include the number of enabled and disabled HARQ processes. Thus, if the total number of HARQ processes is M, where the first N belong to enabled HARQ processes and the remaining M-N are disabled HARQ processes. Then, the base station may inform the UE of the number N of HARQ enabled through the HARQ configuration information. Thus, after receiving the scheduling information of the HARQ, the UE may determine that the indication of the base station is to enable HARQ feedback if the number of the HARQ process is less than or equal to N; if the number of HARQ processes is greater than N, an indication of the base station as disabling HARQ feedback may be determined.

Therefore, the base station only needs to inform the UE of the number of the enabled and/or disabled HARQ processes and then schedules the corresponding HARQ processes, so that the implicit indication can be realized, and the signaling expense is saved.

In some embodiments, as shown in fig. 6, in the step S101, in response to whether to disable the HARQ feedback, implicitly indicating to the UE whether to disable the HARQ feedback includes:

step S401, issuing an activation instruction for activating PUCCH resources according to the HARQ feedback state information; the PUCCH resource has a mapping relation with the HARQ feedback forbidding or starting.

In the embodiment of the present disclosure, the resource set of the PUCCH may be set in advance. The set of resources of the PUCCH includes one or more PUCCH resources, which may include HARQ feedback resources for transmitting HARQ feedback.

Here, the PUCCH resource set may be dynamically defined by RRC, and may also be specified by a protocol.

The PUCCH resource is mainly used for HARQ-ACK feedback, SR (scheduling Request) Request, CSI (Channel State Information) feedback, and the like, which are sent by the UE to the base station. The base station can issue the index of the PUCCH resource to the UE, indicate the PUCCH resource used by the UE, and further realize resource configuration.

In the disclosed embodiments, a pre-designated PUCCH resource may be utilized for indicating an instruction to disable HARQ feedback. Thus, when the base station needs to disable the HARQ feedback, the base station issues the corresponding index to activate the PUCCH, and the UE can be instructed to disable the HARQ feedback.

In some embodiments, the activation instruction includes:

DCI or SIB.

The activation instruction may be carried in DCI or SIB, and after receiving the activation instruction, the UE performs information feedback according to the PUCCH indicated by the activation instruction. If the PUCCH resource corresponding to the activation instruction is a resource representing the HARQ feedback disabled, the UE may determine that the indication of the base station is to disable the HARQ feedback. In contrast, if the PUCCH resource corresponding to the activation instruction is HARQ feedback enabled, the UE may perform corresponding HARQ feedback by using the activated PUCCH.

In some embodiments, the method further comprises:

In the embodiment of the present disclosure, before issuing the instruction to activate and disable the HARQ feedback, the UE needs to be informed of the states of the HARQ resource activation or deactivation corresponding to different PUCCH resources. Therefore, the base station can issue the resource configuration parameter of the PUCCH resource corresponding to whether the HARQ feedback is forbidden or not in advance.

In an embodiment, the resource configuration parameters carry numbers or identifiers corresponding to different PUCCHs, where the specified identifier may be set as a PUCCH resource for disabling HARQ feedback, and of course, a number or identifier that does not correspond to an actual resource may also be used to indicate that HARQ feedback is disabled. For example, in a field for indicating PUCCH in DCI, if different values represent different positions in the PUCCH resource set, at least one of the values may be designated as a position of the PUCCH resource where HARQ feedback is disabled. For another example, in a field for indicating the PUCCH in the DCI, if values 1 to 9 represent different positions in the PUCCH resource set and the corresponding PUCCH resource is activated, the UE performs HARQ feedback using the PUCCH resource. At this time, it is set that a value is not defined in the field, for example, a value 0 represents that HARQ feedback is disabled. Then, if the instruction in the DCI is a value 0, the resource for disabling HARQ feedback is activated, and the UE may determine to disable HARQ feedback according to the activation instruction.

Therefore, the base station correspondingly activates the resources of the forbidden HARQ feedback appointed in the resource configuration parameters by using the downlink control instruction, and the function of the recessive indication forbidden HARQ feedback can be realized.

The activation instruction may include an index number indicating the PUCCH resource, and the UE receives the activation instruction or may determine a location of the activated PUCCH resource according to the index number. If the PUUCH resource is the resource with the HARQ feedback enabled specified in the resource configuration parameters, the UE may determine that the base station indicates HARQ feedback enabled. In contrast, if the PUCCH resource is a resource for which HARQ feedback is disabled specified in the resource configuration parameters, the UE may determine that the base station indicates HARQ feedback as disabled.

In some embodiments, the resource configuration parameters include:

In the embodiment of the present disclosure, the PUCCH resources include time domain resources and frequency domain resources, and the frequency domain resources correspond to an available frequency band of the PUCCH. Multiple frequency bands in a PUCCH resource set and corresponding identities, for example: the number, the index number and the like are used for determining the frequency domain position of the PUCCH resource in the resource set. The correspondence between each frequency domain resource in the PUCCH resource set and the identifier may be defined in RRC or may be defined according to a protocol.

The PUCCH time domain resource represents a time slot occupied by instructing the UE to feed back uplink information. Similar to the frequency domain resources, the correspondence between each time domain resource in the PUCCH resource set and the identifier is also specified by RRC or a protocol.

As shown in fig. 7, an embodiment of the present disclosure provides a method for processing HARQ feedback, where the method is applied to a terminal, and includes:

step S501, responding whether the HARQ feedback is forbidden or not implicitly indicated by the base station, and forbidding or enabling the HARQ feedback.

In the embodiment of the present disclosure, a terminal is an electronic device having a function of communicating with a base station, and includes the UE. Still denoted UE in the following.

According to the implicit indication of the base station, the UE may determine that HARQ feedback is disabled or enabled as indicated by the base station. Thereby enabling or disabling HARQ feedback, respectively.

Because the base station adopts the implicit indication mode to indicate and does not change the signaling format, the UE does not need to correspondingly change the format of the received signaling. The base station and the UE can negotiate the rule of the implicit indication in advance, and the UE can decode the corresponding base station indication and forbid HARQ feedback according to the received signaling sent by the base station, so that the data transmission efficiency is improved, and the time delay is reduced.

In some embodiments, as shown in fig. 8, the method further comprises:

step S601, receiving DCI;

step S602, in response to that the descrambling frequency of the DCI is a first descrambling frequency, determining that the base station implicitly indicates to enable the HARQ feedback; or

Step S603, responding to the DCI descrambling times being second descrambling times, and determining that the base station implicitly indicates to disable HARQ feedback; wherein the second number of descrambles is different from the first number of descrambles.

In this embodiment of the present disclosure, the manner for implicitly indicating that HARQ is enabled or disabled is the number of scrambling times of DCI. Therefore, the UE carries out corresponding descrambling, and the scrambling times can be obtained according to the descrambling times when the descrambling is successful, so as to obtain the implicit indication of the base station.

In the embodiment of the present disclosure, the first descrambling number corresponds to the first scrambling number in the above-described embodiment, and the second descrambling number corresponds to the second scrambling number in the above-described embodiment. Therefore, if the descrambling number when descrambling is successful is the first descrambling number, the indication of the corresponding base station is the indication of the first scrambling number, that is, the indication of enabling HARQ feedback. And if the descrambling frequency when descrambling is successful is the second descrambling frequency, the indication of the corresponding base station is the indication of the second scrambling frequency, namely the indication of forbidding HARQ feedback.

In some embodiments, the method further comprises:

descrambling the DCI by using the C-RNTI;

Since the base station can scramble the DCI by using the C-RNTI, the UE correspondingly descrambles by using the C-RNTI. The C-RNTI may be pre-allocated to the UE by the base station.

In some embodiments, the descrambling the DCI with the C-RNTI includes:

descrambling the DCI for the first time by using the C-RNTI;

and responding to the failure of the first descrambling, and descrambling the DCI for the second time by using a shifting sequence obtained by shifting the C-RNTI.

Here, the base station scrambles DCI twice by using the C-RNTI and the shifted sequences of the C-RNTI. Therefore, the UE also descrambles by using the C-RNTI and the shift sequence of the C-RNTI.

It should be noted that, if the UE fails to descramble for the first time, it indicates that the descrambling frequency is the first descrambling frequency, and at this time, it may be determined that the HARQ feedback is disabled as indicated by the base station. However, since the DCI also carries other indication information, the UE may perform a second descrambling on the DCI. Of course, if the second descrambling is not yet successful, it may be an error in information reception or a failure in DCI information.

In the embodiment of the present disclosure, the UE may first descramble the DCI by using the shift sequence, so as to determine whether the base station performs the second scrambling based on the HARQ feedback disabled. If the first descrambling is failed, the base station does not disable the HARQ feedback, and at this time, the C-RNTI sequence can be used for descrambling the DCI for the second time to obtain other information of the DCI.

The above embodiments have been described, and are not described in detail herein.

In some embodiments, as shown in fig. 9, based on the step S501, the method further includes:

step S701, receiving scheduling information for scheduling the HARQ process;

step S702, if the received scheduling information is used for calling the HARQ process in the forbidden HARQ process group corresponding to the forbidden HARQ feedback, determining that the base station implicitly indicates to forbid the HARQ feedback;

step S703, if the received scheduling information is used to schedule the HARQ process in the HARQ process starting group corresponding to the HARQ feedback start, determining that the base station invisible indication starts the HARQ feedback.

In the embodiment of the disclosure, the base station correspondingly indicates to enable or disable the HARQ feedback according to the scheduling information of different HARQ processes. When the scheduling information received by the UE is used for scheduling the forbidden HARQ process, the UE can directly determine that the base station indicates the forbidden HARQ feedback, so that the UE can forbid the HARQ feedback when receiving and transmitting data corresponding to the process in the future.

In contrast, if the scheduling information received by the UE schedules the HARQ process to be enabled, the UE enables HARQ feedback during subsequent data transceiving corresponding to the process.

Therefore, the UE determines whether the scheduled HARQ process belongs to the HARQ enabled process or the HARQ disabled process according to the received scheduling information of the HARQ process, and may determine the indication of the base station.

In some embodiments, the method further comprises:

and receiving RRC signaling containing the HARQ configuration information.

Here, since the base station issues HARQ configuration information to the UE by using RRC signaling, the UE may determine in advance a corresponding relationship between each HARQ process and enabling or disabling HARQ feedback according to the configuration information. For example, HARQ processes with a number less than or equal to N belong to enabled HARQ processes, and the remaining processes belong to disabled HARQ processes. Thus, after receiving the scheduling instruction subsequently, the UE can determine whether to disable the HARQ process directly according to the identifier of the scheduled HARQ process.

In the above embodiment of the base station side, the HARQ configuration information has been described in detail, and is not described herein again.

In some embodiments, as shown in fig. 10, based on the step S501, the method further includes:

step S801, receiving an activation instruction;

step S802, responding to the activation instruction to activate PUCCH resources, and determining whether the base station invisible indication disables the HARQ feedback; and the PUCCH resource has a mapping relation with the HARQ feedback forbidding or starting.

And after receiving the activation instruction issued by the base station, the UE feeds back information based on the PUCCH resource indicated by the activation instruction. And if the PUCCH resource corresponding to the activation instruction is the forbidden HARQ feedback, the UE does not perform the HARQ feedback.

In some embodiments, the activation instruction includes:

DCI or SIB.

In some embodiments, the method further comprises:

Since the UE does not know in advance the identifier or number corresponding to the PUCCH resource for which HARQ feedback is disabled specified by the base station, the UE can obtain the correspondence between the indication for enabling or disabling HARQ feedback and each PUCCH resource according to the resource configuration parameter. Therefore, after the activation instruction of the base station is subsequently received, whether to disable the HARQ feedback can be determined according to the activated PUCCH resource indicated by the activation instruction.

In some embodiments, the resource configuration parameters include:

Here, the time domain resource and the frequency domain resource in the PUCCH resource have been described in detail in the above embodiments, and are not described again here.

The disclosed embodiments also provide the following examples:

example 1

And carrying out secondary scrambling on the DCI by using the 1-bit HARQ forbidding indication information, and implicitly indicating the HARQ feedback state. The HARQ disable indication information takes a value of "0" or "1", where "0" identifies enabling HARQ feedback and "1" identifies disabling HARQ feedback.

Fig. 11A shows a flowchart of implicit indication performed by the base station, where the base station determines a scrambling method to be adopted for DCI according to a feedback state of an HARQ process. The method comprises the following steps:

step S11, judging whether to forbid HARQ feedback;

step S12, if the HARQ process forbids the HARQ feedback, the DCI is scrambled by the indication information of forbidding the HARQ feedback with 1 bit;

step S13, after the first scrambling of step S12, performing secondary scrambling on the DCI by using C-RNTI; alternatively, if the HARQ process enables HARQ feedback, step S12 is skipped to scramble the DCI directly using the C-RNTI.

The operation flow of the user side is shown in fig. 11B, and includes the following steps:

step S21, descrambling by using the C-RNTI sequence;

step S22, performing CRC check to judge whether descrambling is successful;

step S23, if descrambling fails, shifting the C-RNTI sequence by 1bit to obtain a second descrambling sequence, and descrambling by using the second descrambling sequence;

step S24, if the descrambling by the second descrambling sequence is successful, the HARQ feedback is forbidden;

and step S25, if the first descrambling is successful, enabling HARQ feedback.

Example two

Two HARQ process groups are divided in the HARQ entity, namely an enabled HARQ process group and a disabled HARQ process group. The processes belonging to the enabled HARQ process group enable HARQ feedback, and the processes belonging to the disabled HARQ process group disable HARQ feedback.

Exemplarily, as shown in fig. 12, it is assumed that the number of HARQ processes supported in the NTN network is M. The enabled HARQ process group 11 has a size N, i.e. the first N HARQ processes 12 belong to the enabled HARQ process group and the remaining M-N HARQ processes 12 belong to the disabled HARQ process group 21.

In the embodiment of the present disclosure, the type and size of the HARQ process group may be preconfigured through RRC signaling.

And after determining the HARQ feedback state of the HARQ process, the base station side selects the HARQ process from the corresponding HARQ process group for scheduling. For example, when the HARQ process disables HARQ feedback, the base station schedules the HARQ process in the disabled HARQ process group. Thus, when the UE receives the ID of the HARQ process, the feedback state of the HARQ process can be determined according to the size of the HARQ process group configured in the RRC signaling.

Example three

In order to enable the base station and the UE to agree on the indication of HARQ feedback disabled, in the embodiment of the present disclosure, a default set of parameters { PUCCH resource, dl-DataToUL-ACK } for HARQ feedback disabled function may be set in the RRC parameter, where dl-DataToUL-ACK is a feedback data resource of a higher layer.

For example, the first data of PUCCH resource and the first data of d1-DataToUL-ACK are set to values that have not been used in one protocol to indicate that HARQ feedback is disabled, and then the base station enables activation of data for which HARQ feedback is disabled in the above parameter set by setting a PUCCH resource indication field (PUCCH resource indicator) of DCI to 0 and a HARQ feedback slot indication field (PDSCH-to-HARQ _ feedback timing indicator) of PDSCH to 0. Thus, after receiving the DCI, the UE can determine the time-frequency domain position of the PUCCH feedback indicating that the HARQ feedback is forbidden, thereby realizing the dynamic indication of the HARQ feedback forbidden in the second HARQ process.

Fig. 13A shows that, in various formats of DCI, a PUCCH resource indication field or a PUCCH common resource in system message 1(SIB1) may be used to indicate an index number representing a PUCCH feedback frequency domain position. And determining the frequency domain position of PUCCH feedback in the PUCCH resource set by utilizing the index number. The PUCCH resource set may be dynamically defined by RRC, or may be defined according to a predetermined protocol.

As shown in fig. 13B, the index number in the RRC parameter dl-datatoll-ACK table can be determined by using the HARQ feedback slot indication field of PDSCH in various formats of DCI (e.g., DCI format 1-0/1-1/1-2), and then the dl-datatoll-ACK table is queried according to the index number, so as to determine the value of K1, where K1 represents the time domain relationship between PDSCH and HARQ feedback.

Through the method provided by the embodiment of the disclosure, the forbidding of the HARQ feedback can be implicitly indicated, and the HARQ forbidding based on the UE and the HARQ process is realized. In addition, by adopting the technical scheme of the embodiment of the disclosure, the format of the DCI does not need to be modified.

As shown in fig. 14, an embodiment of the present disclosure further provides a processing apparatus 100 for processing HARQ feedback, which is applied to a base station, and includes:

a first determining module 110 configured to determine HARQ feedback state information;

an indicating module 120 implicitly indicates to the UE whether to disable the HARQ feedback according to the HARQ feedback state information.

In some embodiments, the indication module comprises:

and the scrambling module is configured to scramble the DCI at least once through the C-RNTI.

In some embodiments, the indication module comprises:

a first determining submodule configured to determine a first scrambling number for scrambling the DCI in response to the HARQ feedback state information being HARQ feedback enabled;

and the first sending submodule is configured to send the DCI scrambled by the first scrambling times.

In some embodiments, the first number of scrambling times is 1.

In some embodiments, the indication module comprises:

a second determining submodule configured to determine a second scrambling number for scrambling the DCI in response to the HARQ feedback status information being a disable HARQ feedback;

and the second issuing submodule is configured to issue the DCI scrambled by the second scrambling times.

In some embodiments, the second number of scrambling times is 2.

In some embodiments, the scrambling module comprises:

the first scrambling submodule is configured to perform first scrambling on the DCI by using a C-RNTI in response to the HARQ feedback state information being that the HARQ feedback is disabled;

and the second scrambling submodule is configured to perform second scrambling on the DCI by using a shift sequence obtained by shifting the C-RNTI.

In some embodiments, the indication module comprises:

a third issuing submodule configured to issue scheduling information for scheduling an HARQ process in response to the HARQ feedback state information being a forbidden HARQ feedback, where the scheduling information is used to schedule an HARQ process in a forbidden HARQ process group in which the HARQ feedback is forbidden; or

And the fourth issuing submodule is configured to issue scheduling information for scheduling the HARQ process in the HARQ process disabled group enabling the HARQ feedback in response to the HARQ feedback state information being the HARQ feedback start state.

In some embodiments, the apparatus further comprises:

a first sending module configured to send HARQ configuration information to a UE through RRC signaling, where the HARQ configuration information includes at least one of: the process identification of the enabled HARQ process, the process identification of the disabled HARQ process, the number of enabled HARQ processes, the number of disabled HARQ processes, the type of the process group of the enabled HARQ process, and the type of the process group of the disabled HARQ process.

In some embodiments, the indication module comprises:

the fourth issuing submodule is configured to issue an activation instruction for activating the PUCCH resource according to the HARQ feedback state information; the PUCCH resource has a mapping relation with the HARQ feedback forbidding or starting.

In some embodiments, the activation instruction includes:

DCI or a system message SIB.

In some embodiments, the apparatus further comprises:

a fifth issuing submodule configured to issue a resource configuration parameter of the PUCCH resource before issuing the instruction; the resource configuration parameter is used for configuring the mapping relation.

In some embodiments, the resource configuration parameters include:

As shown in fig. 15, an embodiment of the present disclosure further provides a processing apparatus 200 for HARQ feedback, which is applied to a terminal, and includes:

a disabling module 210 configured to disable HARQ feedback in response to a base station implicitly indicating that HARQ feedback is disabled;

an enabling module 220 configured to enable HARQ feedback in response to an enabling HARQ feedback implicitly indicated by the base station.

In some embodiments, the apparatus further comprises:

a first receiving module configured to receive DCI;

a second determining module configured to determine that the base station implicitly indicates to enable the HARQ feedback in response to the number of descrambling times of the DCI being the first number of descrambling times; or

A third determining module configured to determine that the base station implicitly indicates to disable HARQ feedback in response to the number of descrambling times of the DCI being the second number of descrambling times; wherein the second number of descrambles is different from the first number of descrambles.

In some embodiments, the apparatus further comprises:

a descrambling module configured to descramble the DCI using the C-RNTI;

a fourth determining module configured to determine the number of descrambling times that the DCI descrambles successfully.

In some embodiments, the descrambling module comprises:

a first descrambling submodule configured to descramble the DCI for the first time by using a shift sequence obtained by shifting the C-RNTI;

and the second descrambling submodule is configured to perform second descrambling on the DCI by using the C-RNTI in response to the failure of the first descrambling.

the fourth determining module includes:

a third determining submodule configured to determine, in response to the first descrambling success, that the descrambling number is the first descrambling number;

a fourth determining submodule configured to determine, in response to the first descrambling failing and the second descrambling succeeding, that the number of descrambling times is the second descrambling time.

In some embodiments, the apparatus further comprises:

a second receiving module configured to receive scheduling information for scheduling the HARQ process;

a fifth determining module, configured to determine that the base station implicitly indicates to disable the HARQ feedback if the received scheduling information is used to invoke HARQ processes in a disabled HARQ process group corresponding to the disabled HARQ feedback;

a sixth determining module configured to determine that the base station stealth indication enables the HARQ feedback if the received scheduling information is used for scheduling HARQ processes in an enabled HARQ process group corresponding to an enabled HARQ feedback.

In some embodiments, the apparatus further comprises:

a third receiving module configured to receive the RRC signaling containing the HARQ configuration information.

In some embodiments, the apparatus further comprises:

a fourth receiving module configured to receive an activation instruction;

a sixth determining module configured to activate the PUCCH resource in response to the activation instruction, determine whether the base station stealth indication disables the HARQ feedback; and the PUCCH resource has a mapping relation with the HARQ feedback forbidding or starting.

In some embodiments, the activation instruction includes:

DCI or SIB.

In some embodiments, the apparatus further comprises:

a fifth receiving module, configured to receive a resource configuration parameter of the PUCCH resource before receiving the activation instruction; the resource configuration parameter is used for configuring the mapping relation.

In some embodiments, the resource configuration parameters include:

Fig. 16 is a block diagram of a structure of an apparatus for processing HARQ feedback according to an embodiment of the present disclosure. The processing device for HARQ feedback may be a UE. For example, the processing apparatus 800 for HARQ feedback may be a mobile phone, a computer, a digital broadcast user equipment, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 16, a processing apparatus 800 for HARQ feedback may include at least one of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, and communication component 816.

The processing component 802 generally controls overall operation of the processing device 800 for HARQ feedback, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include at least one processor 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include at least one module that facilitates interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support the operation of the processing apparatus 800 in HARQ feedback. Examples of such data include instructions for any application or method operating on processing device 800 for HARQ feedback, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

Power component 806 provides power to the various components of processing device 800 for HARQ feedback. Power components 806 may include a power management system, at least one power supply, and other components associated with generating, managing, and distributing power for processing device 800 for HARQ feedback.

The multimedia component 808 comprises a screen providing an output interface between said processing means 800 of HARQ feedback and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes at least one touch sensor to sense touch, slide, and gesture on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect a wake-up time and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. When the processing apparatus 800 for HARQ feedback is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive an external audio signal when the processing apparatus 800 for HARQ feedback is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor component 814 includes at least one sensor for providing various aspects of state estimation for the processing apparatus 800 of HARQ feedback. For example, sensor component 814 may detect an on/off state of device 800, a relative positioning of components, such as a display and keypad of processing apparatus 800 for HARQ feedback, sensor component 814 may also detect a change in position of processing apparatus 800 for HARQ feedback or a component of processing apparatus 800 for HARQ feedback, a presence or absence of user contact with processing apparatus 800 for HARQ feedback, a position or acceleration/deceleration of processing apparatus 800 for HARQ feedback, and a temperature change of processing apparatus 800 for HARQ feedback. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

A communication component 816 is configured to facilitate communication between the processing apparatus 800 of HARQ feedback and other devices in a wired or wireless manner. The processing apparatus 800 for HARQ feedback may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the processing device 800 for HARQ feedback may be implemented by at least one Application Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), controller, microcontroller, microprocessor or other electronic element for performing the above-described method.

In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the processing apparatus for HARQ feedback 800 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

As shown in fig. 17, an embodiment of the present disclosure shows a structure of another HARQ feedback processing apparatus. The processing apparatus for HARQ feedback may be the base station according to the embodiment of the present disclosure. For example, the processing apparatus 900 for HARQ feedback may be provided as a network device. Referring to fig. 17, processing arrangement 900 for HARQ feedback includes a processing component 922, which further includes at least one processor, and memory resources, represented by memory 932, for storing instructions, such as applications, executable by processing component 922. The application programs stored in memory 932 may include one or more modules that each correspond to a set of instructions. Further, processing component 922 is configured to execute instructions to perform any of the methods described above with respect to the processing means for HARQ feedback.

The processing apparatus 900 for HARQ feedback may further include a power component 926 configured to perform power management of the processing apparatus 900 for HARQ feedback, a wired or wireless network interface 950 configured to connect the processing apparatus 900 for HARQ feedback to a network, and an input/output (I/O) interface 958. The processing means 900 for HARQ feedback may be operable based on an operating system stored in memory 932, such as Windows Server, Mac OS XTM, UnixTM, linux, FreeBSDTM, or the like.

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

It will be understood that the invention 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 invention is limited only by the appended claims.

Claims

1. A processing method for HARQ feedback of hybrid automatic repeat request is applied to a base station and comprises the following steps:

determining HARQ feedback state information;

and implicitly indicating whether to forbid the HARQ feedback to User Equipment (UE) according to the HARQ feedback state information.

2. The method of claim 1, wherein implicitly indicating to the UE whether to disable the HARQ feedback according to the HARQ feedback status information comprises:

and scrambling the downlink control information DCI at least once through the cell radio network temporary identifier C-RNTI.

3. The method of claim 2, wherein implicitly indicating to the UE whether to disable the HARQ feedback according to the HARQ feedback state information comprises:

and issuing the DCI scrambled by the first scrambling times.

4. The method of claim 3, wherein the first number of scrambles is 1.

5. The method of claim 2, wherein implicitly indicating to the UE whether to disable the HARQ feedback according to the HARQ feedback state information comprises:

and issuing the DCI scrambled by the second scrambling times.

6. The method of claim 5, wherein: the second scrambling number is 2.

7. The method of claim 6, wherein the DCI is scrambled at least once by a C-RNTI, comprising:

8. The method of claim 7, wherein the shift sequence is a sequence obtained by shifting the sequence of the C-RNTI by at least one bit.

9. The method of claim 1, wherein implicitly indicating to the UE whether to disable the HARQ feedback according to the HARQ feedback state information comprises:

10. The method of claim 9, wherein the method further comprises:

issuing HARQ configuration information to the UE through Radio Resource Control (RRC) signaling, wherein the HARQ configuration information comprises at least one of the following information: the process identification of the enabled HARQ process, the process identification of the disabled HARQ process, the number of enabled HARQ processes, the number of disabled HARQ processes, the type of the process group of the enabled HARQ process, and the type of the process group of the disabled HARQ process.

11. The method of claim 1, wherein implicitly indicating to the UE whether to disable the HARQ feedback according to the HARQ feedback state information comprises:

issuing an activation instruction for activating the PUCCH resource according to the HARQ feedback state information; the PUCCH resource has a mapping relation with the HARQ feedback forbidding or starting.

12. The method of claim 11, wherein the activation instruction comprises:

downlink control information, DCI; or

System messages SIB.

13. The method of claim 11, wherein the method further comprises:

14. The method of claim 13, wherein the activation instruction comprises: index number of the PUCCH resource to be activated.

15. The method of claim 13, wherein the resource configuration parameters comprise:

16. A processing method of HARQ feedback is applied to a terminal and comprises the following steps:

17. The method of claim 16, wherein the method further comprises:

receiving DCI;

18. The method of claim 17, wherein the method further comprises:

descrambling the DCI by using the C-RNTI;

19. The method of claim 18, wherein the descrambling the DCI with the C-RNTI comprises:

20. The method of claim 19, wherein the first number of descrambles is 1; the second descrambling number is 2;

the determining the descrambling number of times that the DCI descrambling is successful includes:

21. The method of claim 20, wherein the shift sequence is a sequence obtained by shifting the sequence of the C-RNTI by at least one bit.

22. The method of claim 16, wherein the method further comprises:

receiving scheduling information for scheduling the HARQ process;

23. The method of claim 22, wherein the method further comprises:

and receiving RRC signaling containing the HARQ configuration information.

24. The method of claim 23, wherein the HARQ configuration information is at least one of: the process identification of the enabled HARQ process, the process identification of the disabled HARQ process, the number of enabled HARQ processes, the number of disabled HARQ processes, the type of the process group of the enabled HARQ process, and the type of the process group of the disabled HARQ process.

25. The method of claim 16, wherein the method further comprises:

receiving an activation instruction;

activating a PUCCH resource in response to the activation instruction, determining whether the base station stealth indication disables the HARQ feedback; and the PUCCH resource has a mapping relation with the HARQ feedback forbidding or starting.

26. The method of claim 25, wherein the activation instruction comprises:

DCI or SIB.

27. The method of claim 26, wherein the method further comprises:

28. The method of claim 27, wherein the activation instruction comprises: index number of the PUCCH resource to be activated.

29. The method of claim 28, wherein the resource configuration parameters comprise:

30. An apparatus for processing HARQ feedback, wherein the apparatus is applied in a base station, and comprises:

a determining module configured to determine HARQ feedback state information;

31. An apparatus for processing HARQ feedback, wherein the apparatus is applied in a terminal, and comprises:

32. A processing apparatus for HARQ feedback, wherein the processing apparatus at least comprises: a processor and a memory for storing executable instructions operable on the processor, wherein:

the processor is configured to execute the executable instructions, and the executable instructions perform the steps of the method for processing HARQ feedback provided in any of the above claims 1 to 15 or 16 to 29.

33. A non-transitory computer-readable storage medium, wherein the computer-readable storage medium has stored therein computer-executable instructions, which when executed by a processor, implement the steps in the method for processing HARQ feedback provided in any of the preceding claims 1 to 15 or 16 to 29.