CN112204908B

CN112204908B - HARQ feedback processing method and device and storage medium

Info

Publication number: CN112204908B
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: 2024-03-29
Anticipated expiration: 2040-08-03
Also published as: CN112204908A; WO2022027195A1

Abstract

The embodiment of the disclosure provides a processing method and device for hybrid automatic repeat request (HARQ) feedback and a storage medium. The method provided by the embodiment of the disclosure is applied to the base station and comprises the following steps: determining HARQ feedback state information; and implicitly indicating whether the HARQ feedback is forbidden or not to the User Equipment (UE) according to the HARQ feedback state information.

Description

HARQ feedback processing method and device and storage medium

Technical Field

The embodiment of the disclosure relates to the field of wireless communication, but is not limited to the field of wireless communication, in particular to a method and a device for processing HARQ feedback and a storage medium.

Background

The hybrid automatic repeat request (HARQ, hybrid Automatic Repeat Request) mechanism is one of the most important functions in data transmission in cellular networks, and in combination with link adaptation, HARQ can achieve efficient, reliable and low-latency data transmission in cellular networks. With the HARQ protocol, the transmitting end needs to wait for feedback from the receiving end before sending new data, if the receiving end feeds back a Negative Acknowledgement (NACK), the transmitting end needs to retransmit the data packet, otherwise, the transmitting end may send the new data. A Stop and Wait (SAW) process in the HARQ mechanism may reduce link throughput due to the delay of the HARQ RTT (HARQ Round Trip Time ).

Non-terrestrial network (NTN, non-Terrestrial Network) 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 large transmission delay because of the long distance between two communication parties. Thus, the stop-and-wait procedure of the HARQ scheme in the related art requires a longer RTT, and thus has a greater delay with respect to the terrestrial network (TN, terrestrial Network).

Disclosure of Invention

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

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

determining HARQ feedback state information;

and implicitly indicating whether the HARQ feedback is forbidden or not to UE (User Equipment) 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:

the DCI (Downlink Control Information ) is scrambled at least once by a C-RNTI (Cell-Radio Network Temporary Identifier, cell radio network temporary identifier).

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 frequency.

In some embodiments, the first scrambling number is 1.

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

and issuing the DCI scrambled with the second scrambling frequency.

In some embodiments, the second scrambling number is 2.

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

in response to the HARQ feedback state information being that the HARQ feedback is disabled, scrambling the DCI for the first time by using a C-RNTI; and, the DCI is scrambled for the second time 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 to disable HARQ feedback, and issuing scheduling information of a scheduling HARQ process, wherein the scheduling information is used for scheduling the HARQ process in a disabled HARQ process group which disables the HARQ feedback; or alternatively

And responding to the HARQ feedback state information to start HARQ feedback, and issuing scheduling information of a scheduling HARQ process, wherein the scheduling information is used for scheduling the HARQ process in a forbidden HARQ process group for starting the HARQ feedback.

In some embodiments, the method further comprises:

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

According to the HARQ feedback state information, an activation instruction for activating PUCCH (Physical Uplink Control Channel, uplink physical control channel) resources is issued; and the PUCCH resource has a mapping relation with the forbidden HARQ feedback or the started HARQ feedback.

In some embodiments, the activation instructions include:

DCI or system message SIB.

In some embodiments, the method further comprises:

before issuing the instruction, issuing a resource configuration parameter of the PUCCH resource; the resource allocation parameter is used for allocating the mapping relation.

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

In some embodiments, the resource configuration parameters include:

indicating to activate configuration parameters of frequency resources in the PUCCH resources for disabling and/or enabling the HARQ feedback; and/or

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

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

and in response to whether the HARQ feedback is disabled or not, which is implicitly indicated by the base station, disabling or enabling the HARQ feedback.

In some embodiments, the method further comprises:

receiving DCI;

determining that the base station implicitly indicates to enable the HARQ feedback according to the first descrambling times of the DCI; or alternatively

Determining that the base station implicitly indicates to disable HARQ feedback in response to the descrambling times of the DCI being a second descrambling times; 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 a C-RNTI;

and determining the descrambling times of the successful descrambling of the DCI.

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

performing primary descrambling on the DCI by using a shift sequence obtained by shifting the C-RNTI;

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

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

the determining the descrambling times in response to successful descrambling of the DCI includes:

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

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

In some embodiments, the method further comprises:

receiving scheduling information of a scheduling 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 forbidden the HARQ feedback;

and if the received scheduling information is used for scheduling the HARQ process in the HARQ process group corresponding to the HARQ feedback starting, determining that the base station stealth 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 HARQ enabling process, the process identification of the HARQ disabling process, the number of the HARQ enabling processes, the number of the HARQ disabling processes, the type of the process group of the HARQ enabling process, and the type of the process group of the HARQ disabling process.

In some embodiments, the method further comprises:

receiving an activation instruction;

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

In some embodiments, the activation instructions include:

DCI or SIB.

In some embodiments, the method further comprises:

before receiving the activation instruction, receiving a resource configuration parameter of the PUCCH resource; the resource allocation parameter is used for allocating the mapping relation.

In some embodiments, the resource configuration parameters include:

Indicating configuration parameters for activating time domain resources in PUCCH resources for disabling and/or enabling the HARQ feedback.

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

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

and the indicating module is configured to implicitly indicate whether the HARQ feedback is forbidden or not to the UE according to the HARQ feedback state information.

According to a fourth aspect of embodiments of the present disclosure, there is provided a processing apparatus for HARQ feedback, the apparatus being applied to a terminal, including:

And the feedback module is configured to disable or enable the HARQ feedback in response to whether the HARQ feedback is disabled or not indicated implicitly by the base station.

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

and the processor is used for executing the executable instructions to execute the steps in any HARQ feedback processing method.

According to a sixth aspect of 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 steps in a method of processing HARQ feedback of any of the above.

Embodiments of the present disclosure provide a method that includes enabling and disabling HARQ feedback. The base station carries the indication of enabling or disabling the HARQ feedback in the information to be transmitted in the process of communicating with the terminal in an implicit mode, and implicitly indicates the terminal to enable or disable the HARQ feedback. In this way, the base station does not need to separately issue signaling indicating to disable HARQ feedback, nor does it need to add signaling dedicated to indicating to disable HARQ to the DCI. On the one hand, if the dedicated field or character bit for indicating to disable HARQ is added by using signaling such as DCI and modifying the format, the underlying protocol of the base station and the UE needs to be reconfigured, so that the compatibility with the related art is small, the signaling overhead is large, and thus a huge technical burden is brought. In contrast, in the embodiment of the disclosure, the original implicit instructions such as interactive signaling are utilized to enable or disable the HARQ feedback, and the signaling format such as DCI is not required to be modified, so that the related technology is convenient to be compatible, and the burden brought by technology improvement is reduced. On the other hand, the implicit indication does not need to add special signaling or a field or character bit special for indication in signaling such as DCI, thereby saving the signaling overhead.

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 of the invention.

Fig. 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment;

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

fig. 3 is a flow diagram illustrating a method of processing HARQ feedback according to an exemplary embodiment;

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

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

fig. 6 is a flow chart diagram IV illustrating a method of processing HARQ feedback according to an example embodiment;

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

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

fig. 9 is a flow chart seven of a method for processing HARQ feedback according to an exemplary embodiment;

Fig. 10 is a flowchart eight of a method for processing HARQ feedback according to an exemplary embodiment;

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

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

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

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

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

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

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

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

fig. 17 is a schematic diagram of a physical structure of a HARQ feedback processing apparatus according to an exemplary embodiment.

Detailed Description

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

The terminology used in the embodiments of the disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the embodiments of the disclosure. As used in this disclosure of 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 or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in embodiments of the present disclosure to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the 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.

To better describe any embodiment of the present disclosure, an embodiment of the present disclosure is exemplified by an application scenario of access control.

Referring to fig. 1, a schematic structural diagram of a wireless communication system according to an embodiment of the 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: a number of terminals 11 and a number of base stations 12.

Where the terminal 11 may be a device providing voice and/or data connectivity to a user. The terminal 11 may communicate with one or more core networks via a radio access network (Radio Access Network, RAN), and the terminal 11 may be an internet of things terminal such as a sensor device, a mobile phone (or "cellular" phone) and a computer with an internet of things terminal, for example, a stationary, portable, pocket, hand-held, computer-built-in or vehicle-mounted device. Such as a Station (STA), subscriber unit (subscriber unit), subscriber Station (subscriber Station), mobile Station (mobile), remote Station (remote Station), access point, remote terminal (remote terminal), access terminal (access terminal), user device (user terminal), user agent (user agent), user equipment (user device), or user terminal (user equipment). Alternatively, the terminal 11 may be an unmanned aerial vehicle device. Alternatively, the terminal 11 may be a vehicle-mounted device, for example, a car computer having a wireless communication function, or a wireless terminal externally connected to the car computer. Alternatively, the terminal 11 may be a roadside device, for example, a street lamp, a signal lamp, or other roadside devices having a wireless communication function.

The base station 12 may be a network-side device in a wireless communication system. Wherein the wireless communication system may be a fourth generation mobile communication technology (the 4th generation mobile communication,4G) system, also known as a long term evolution (Long Term Evolution, LTE) system; alternatively, the wireless communication system may be a 5G system, also known as a New Radio (NR) system or a 5G NR system. Alternatively, the wireless communication system may be a next generation system of the 5G system. Among them, the access network in the 5G system may be called NG-RAN (New Generation-Radio Access Network, new Generation radio access network).

Wherein the base station 12 may be an evolved base station (eNB) employed in a 4G system. Alternatively, the base station 12 may be a base station (gNB) in a 5G system employing a centralized and distributed architecture. When the base station 12 employs a centralized and distributed architecture, it typically includes a Centralized Unit (CU) and at least two Distributed Units (DUs). A protocol stack of a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) layer, a radio link layer control protocol (Radio Link Control, RLC) layer, and a medium access control (Media Access Control, MAC) layer is provided in the centralized unit; a Physical (PHY) layer protocol stack is provided in the distribution unit, and the specific implementation of the base station 12 is not limited by the embodiment of the present disclosure.

A wireless connection may be established between the base station 12 and the terminal 11 over a wireless air interface. In various embodiments, the wireless air interface is a fourth generation mobile communication network technology (4G) standard-based wireless air interface; or, 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 air interface; alternatively, the wireless air interface may be a wireless air interface based on a 5G-based technology standard of a next generation mobile communication network.

In some embodiments, an E2E (End to End) connection may also be established between terminals 11. Such as V2V (vehicle to vehicle, vehicle-to-vehicle) communications, V2I (vehicle to Infrastructure, vehicle-to-road side equipment) communications, and V2P (vehicle to pedestrian, vehicle-to-person) communications among internet of vehicles communications (vehicle to everything, V2X).

In some embodiments, the above wireless communication system may further comprise 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 (Mobility Management Entity, MME) in an evolved packet core network (Evolved Packet Core, EPC). Alternatively, the network management device may be other core network devices, such as a Serving GateWay (SGW), a public data network GateWay (Public Data Network GateWay, PGW), a policy and charging rules function (Policy and Charging Rules Function, PCRF) or a home subscriber server (Home Subscriber Server, HSS), etc. The embodiment of the present disclosure is not limited to the implementation form of the network management device 13.

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

Compared with the ground network, the NTN network has the characteristic of large transmission delay because of the long distance between two communication parties. For example, based on the scenario of geostationary orbit (GEO, geostationary Earth Orbiting), the maximum Round Trip Time (RTT) reaches 541.46 milliseconds; based on the low earth orbit (LEO, low Earth Orbiting) scenario, the maximum RTT is 25.77 milliseconds when the orbit height of LEO satellites is 600 km.

Hybrid automatic repeat request (HARQ) mechanisms are one of the most important functions in NR, and in combination with link adaptation, HARQ can achieve efficient, reliable and low-delay data transmission in cellular networks. 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 the new data, if the receiving end feeds back whether to confirm (NACK), the sending end needs to retransmit the data packet, otherwise, the receiving end feeds back that the Acknowledgement (ACK) is sent to the receiving end, and the receiving end can send the new data. SAW procedures in HARQ mechanisms can reduce link throughput due to HARQ RTT delays.

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 waiting for HARQ completion. For example, 16 HARQ processes are supported to accommodate HARQ RTTs of a few milliseconds in 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 using HARQ mechanisms in NTN networks. Furthermore, in the above embodiment, the number of HARQ processes supported by the HARQ protocol is insufficient to accommodate transmission delays of tens to hundreds of milliseconds in the NTN network, which may result in a decrease in throughput of the link.

Therefore, in the embodiment of the present disclosure, disabling HARQ feedback of at least some terminals in the NTN network is considered, so as to reduce delay and improve 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 to DCI signaling for indicating HARQ feedback, or disabling HARQ feedback is indicated by multiplexing DCI existing fields.

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;

step S102, according to the HARQ feedback state information, implicitly indicating whether the HARQ feedback is forbidden or not to the user equipment UE.

In the embodiments of the present disclosure, the HARQ feedback status information may be information indicating whether to disable HARQ feedback, including status information indicating that HARQ feedback is enabled and/or status 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 for the service corresponding to the HARQ process is greater than a preset latency threshold, or determines to disable HARQ feedback if the requirement for the quality of the data information is lower, e.g., the required maximum packet loss rate is greater than a preset threshold.

When the HARQ feedback is disabled, after a data packet is sent by a sending end of data, the sending end does not need to wait for an acknowledgement message of a receiving end, but can directly send the next data packet. Therefore, the data transmission between the transmitting end and the receiving end saves the time of stopping waiting (SAW) between each data packet, thereby reducing the delay and increasing the throughput of the 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, since the transmitting end does not wait for the HARQ feedback of the receiving end after disabling the HARQ feedback, no retransmission occurs. In this way, on one hand, the data transmission speed is further improved, and on the other hand, the quality of data transmission is reduced, for example, the phenomena of packet loss and the like may occur. Thus, 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 smaller than or equal to a preset time delay threshold value or the requirement on the data information quality is higher, if the required maximum packet loss rate is smaller than or equal to the preset threshold value, the HARQ feedback can be started so as to improve the data quality of the data transmission.

In the embodiment of the disclosure, the base station adopts a implicit indication mode to indicate to the UE to enable or disable HARQ feedback. Implicit indication refers to: the dedicated signaling plain text is not adopted to carry indication information indicating that the HARQ feedback is enabled or disabled. For example, the signaling format of signaling with plaintext indicating other information, the form of the information or the mapping relation of the indicated other information with the enabled HARQ feedback and/or the disabled HARQ feedback is utilized, thereby indirectly indicating the enabled HARQ feedback or the disabled HARQ feedback.

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

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

The different scrambling modes include the following differences:

the scrambling times are different;

and/or the number of the groups of groups,

the scrambling sequences are different.

For example, the indication of enabling or disabling HARQ feedback is represented by different numbers of scrambling of DCI, respectively; as another example, the identification of HARQ processes is utilized to distinguish between different processes that enable or disable HARQ feedback.

The base station does not need to send an instruction for enabling or disabling HARQ feedback to the UE separately, nor does it need to add a field or an indicator bit in DCI signaling. Instead, the indication of enabling or disabling the HARQ feedback can be implemented by using the correspondence between different information and enabling or disabling the HARQ feedback in the signaling for indicating other information, so that the overhead of the signaling can be effectively saved. Meanwhile, the UE can be controlled to disable HARQ feedback under the condition of not needing an HARQ feedback mechanism or having higher requirements on low time delay without changing the protocol, the 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 with a C-RNTI. The C-RNTI is a cell radio network temporary identifier, and is a dynamic identifier allocated to the UE which is successfully accessed to the network by the base station, and the UE under one cell is uniquely identified.

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

In addition, in some implementations, scrambling may also be performed 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 disclosure, scrambling is performed on DCI for different scrambling times, which may be performed by performing scrambling operations for multiple times by using the C-RNTI sequence, or may be performed by performing scrambling for multiple times by using the C-RNTI sequence and the shifted or changed C-RNTI sequence.

In this way, the DCI can be scrambled by using the C-RNTI sequence without introducing new indication information or introducing a special scrambling sequence, thereby realizing the function of implicitly indicating to enable or disable HARQ feedback.

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

step S201, determining a first scrambling frequency of scrambling DCI in response to the HARQ feedback state information being that the HARQ feedback is started;

step S202, issuing the DCI scrambled by the first scrambling times.

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

The scrambling may be to perform operation processing on the signal by using a predetermined sequence, and then transmit the signal, so that signal interference between adjacent channels can be effectively reduced. After receiving the DCI transmitted by the base station, the UE needs to descramble. And after descrambling the DCI, the UE successfully checks, and then the relevant indication of the base station can be obtained and processed.

In one embodiment, the DCI may be scrambled once with a predetermined sequence and the UE may descramble once after receiving the DCI. If the UE descrambles successfully, the DCI acquisition is successful.

In the embodiment of the present disclosure, the above implicit indication may be implemented by using the above process of scrambling DCI. That is, the indication of enabling or disabling HARQ feedback is distinguished using different scrambling times.

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

In this way, the base station can implicitly instruct the UE to enable HARQ feedback by scrambling the DCI a first number of scrambling times using the fixed format of the DCI in the existing communication protocol. Thus, no new field or special character bit for indicating HARQ enable or disable is needed, and no change in DCI format is needed.

In some embodiments, the first scrambling number is 1.

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

step 203, determining a second scrambling frequency of down scrambling the DCI in response to the HARQ feedback status information being disabling HARQ feedback, where the second scrambling frequency is different from the first scrambling frequency;

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

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

Correspondingly, the UE descrambles the DCI at least once, and if the number of descrambles is the same as the second number of scrambles when the descrambling is successful, the indication of the base station may be determined to disable HARQ feedback for a long time.

In some embodiments, the second scrambling number is 2.

In fig. 5, steps S201 to S202 and steps S203 to S204 are two cases in parallel, and when HARQ feedback is enabled, steps S201 to S202 are performed; when the HARQ feedback is disabled, steps S203 to S204 are performed.

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

in response to disabling the HARQ feedback, first scrambling the DCI with a C-RNTI; and, the DCI is scrambled for the second time by using a shift sequence obtained by shifting the C-RNTI.

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

And the second scrambling frequency corresponding to the disabled HARQ feedback may be increased by one scrambling, that is, two scrambling operations in total, based on the first scrambling frequency.

Thus, the UE needs to perform descrambling twice to successfully descramble. That is, the UE may determine that the indication of the base station is HARQ feedback enabled if one descrambling is successful and may determine that the indication of the base station is HARQ feedback disabled if one descrambling is failed and one descrambling is again successful.

In the embodiment of the disclosure, the C-RNTI may be utilized to perform at least one bit of sequence movement to obtain the shift sequence. For example, the C-RNTI sequence is a binary sequence, and 1 is added to the sequence so that each bit is changed, resulting in a shifted sequence.

Thus, by simply processing the C-RNTI, two different scrambling sequences before and after processing can be obtained so as to respectively scramble the DCI twice. Thus, 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 is successful, the base station indication bit disables HARQ feedback.

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

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

Step 301, in response to the HARQ feedback status information being the forbidden HARQ feedback, issuing scheduling information for scheduling HARQ processes, where the scheduling information is used for scheduling HARQ processes in the forbidden HARQ process group for which the HARQ feedback is forbidden; or alternatively

Step S302, responding to the HARQ feedback state information to start HARQ feedback, and issuing the scheduling information of the scheduling HARQ process, wherein the scheduling information is used for scheduling the HARQ process in the forbidden HARQ process group for starting the HARQ feedback.

In the data transmission and reception process of the base station and the UE, generally, both the transmitting and receiving sides transmit data by using a protocol such as stopping HARQ, and after a transmitting end transmits a data packet, the transmitting end stops waiting for acknowledgement information. The receiving end feeds back acknowledgement information of positive (ACK) or Negative (NACK). But stopping waiting for each transmission results in a low throughput 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. Thus, the base station may choose to schedule different HARQ processes to send data to the UE.

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

In the embodiment of the disclosure, the base station may select a part of the HARQ processes as the disabled HARQ processes, and when the base station schedules the disabled HARQ processes, the base station may simultaneously issue 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 can confirm whether the corresponding HARQ process belongs to a pre-agreed disabled HARQ process through the received scheduling information.

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

When the base station indicates that part of the HARQ processes are forbidden for 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, different services can be aimed at, and the transmission efficiency of the corresponding processes can be improved. Meanwhile, the overall data throughput of the communication link can be further improved, and the time delay is reduced.

By the method, implicit indication of enabling or disabling HARQ feedback is realized by utilizing classification of different HARQ processes. Thus, no special signaling is needed to be added for indication, thereby saving signaling overhead and changing the existing signaling format.

In the embodiment of the present disclosure, the above HARQ process further includes an enabling HARQ process, and accordingly, when the base station schedules the enabling HARQ process, the UE may be implicitly instructed to enable HARQ feedback. For example, a process corresponding to a service with a higher accuracy requirement for data transmission or a lower time delay requirement may be classified as an HARQ enabled process.

In this way, when the UE determines that the received scheduling information is the HARQ process starting scheduling information according to the information such as the process number, the identifier and the like carried in the scheduling information, HARQ feedback is started.

In the embodiment of the disclosure, the base station realizes implicit indication of enabling or disabling HARQ feedback by dividing the HARQ process into the enabling HARQ process group and the disabling HARQ process group, so that no additional field, character bit or other instruction is required to be added for indication. And different processing modes can be adopted for different types of HARQ processes, so that the HARQ processes corresponding to different service requirements can be flexibly controlled.

In some embodiments, the method further comprises:

transmitting HARQ configuration information to the UE through RRC signaling, wherein the HARQ configuration information comprises at least one of the following components: the process identification of the HARQ enabling process, the process identification of the HARQ disabling process, the number of the HARQ enabling processes, the number of the HARQ disabling processes, the type of the process group of the HARQ enabling process, and the type of the process group of the HARQ disabling process.

Here, the type of the HARQ process-enabled process group may be an HARQ process-enabled group; the type of process group disabling the HARQ process may be disabling the HARQ process group.

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

In the embodiment of the disclosure, the base station transmits the HARQ configuration information to the UE by using RRC signaling, and informs 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 HARQ feedback or disabling HARQ feedback, and can implement implicit indication of enabling or disabling the HARQ process.

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

In embodiments 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, the first N belonging to enabled HARQ processes and the remaining M-N are disabled HARQ processes. Then, the base station may inform the UE of the HARQ enabled number N through the HARQ configuration information. In this way, after receiving the HARQ scheduling information, if the number of the HARQ process is less than or equal to N, the UE may determine that the indication of the base station is to enable HARQ feedback; if the number of the HARQ process is greater than N, the indication of the base station may be determined to disable HARQ feedback.

Therefore, the base station can realize the implicit indication only by informing the UE of the quantity of the enabled and/or disabled HARQ processes and then scheduling the corresponding HARQ processes, thereby saving the expenditure of signaling.

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

step S401, according to the HARQ feedback state information, an activation instruction for activating the PUCCH resource is issued; and the PUCCH resource has a mapping relation with the forbidden HARQ feedback or the started HARQ feedback.

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

Here, the PUCCH resource set may be dynamically defined by RRC, or may be specified according to a protocol.

The PUCCH resources are mainly used for HARQ-ACK feedback, SR (Scheduleing Request, uplink scheduling request) request, CSI (Channel State Information ) feedback, and the like, which are transmitted from the UE to the base station. The base station may issue an index of the PUCCH resource to the UE, indicating the PUCCH resource used by the UE, thereby implementing resource allocation.

In the embodiments of the present disclosure, a pre-designated PUCCH resource may be utilized for representing an instruction to disable HARQ feedback. In this way, when the base station needs to disable HARQ feedback, the base station issues a corresponding index to activate the PUCCH, so as to instruct the UE to disable HARQ feedback.

In some embodiments, the activation instructions include:

DCI or SIB.

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

In some embodiments, the method further comprises:

In the embodiment of the present disclosure, before issuing an instruction for activating and disabling HARQ feedback, the UE needs to be informed of the states of enabling or disabling HARQ resources corresponding to different PUCCH resources. Therefore, the base station may issue in advance the resource configuration parameters of the PUCCH resources having a correspondence relation with whether to disable the HARQ feedback.

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, the numbers or identifiers not corresponding to the actual resource may also be used to indicate disabling HARQ feedback. For example, in a field for indicating PUCCH in DCI, if different values represent different positions in PUCCH resource sets, at least one of the values may be designated as a position of PUCCH resource for disabling HARQ feedback. As another example, in a field for indicating PUCCH in DCI, if values of 1-9 etc. represent different positions in a PUCCH resource set, a corresponding PUCCH resource is activated, and the UE performs HARQ feedback using the PUCCH resource. At this time, a value not yet defined in this field is set, for example, a value of 0 represents disabling HARQ feedback. Then, if the instruction in the DCI is a value of 0, the resource disabling HARQ feedback is activated, and the UE may determine to disable HARQ feedback according to the activation instruction.

Thus, the base station can realize the function of implicitly indicating the forbidden HARQ feedback by using the downlink control instruction to correspondingly activate the resources which are specified in the resource configuration parameters and are forbidden for HARQ feedback.

The activation instruction may include an index number indicating the PUCCH resource, and the UE may receive the activation instruction or may determine a location of the activated PUCCH resource according to the index number. If the PUUCH resource is the HARQ feedback enabled resource 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 disabling HARQ feedback specified in the resource configuration parameter, the UE may determine that the base station indicates to disable HARQ feedback.

In some embodiments, the resource configuration parameters include:

In the embodiment of the 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. A plurality of frequency bands in the PUCCH resource set and corresponding identities, for example: numbers, index numbers, etc. for determining frequency domain positions of PUCCH resources 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 slot occupied by instructing the UE to feed back uplink information. Similar to the frequency domain resources, the correspondence between each time domain resource and the identity in the PUCCH resource set is also specified by RRC or 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, in response to whether to disable HARQ feedback indicated implicitly by the base station, disabling or enabling the HARQ feedback.

In the embodiment of the disclosure, the terminal is an electronic device having a function of communicating with the base station, and includes the UE described above. Hereinafter, it will be denoted by UE.

According to the implicit indication of the base station, the UE may determine to disable or enable HARQ feedback of the base station indication. Thereby enabling or disabling HARQ feedback accordingly.

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 rules of implicit indication in advance, and the UE can decode the corresponding base station indication and disable 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, determining that the base station implicitly indicates to start the HARQ feedback in response to the descrambling times of the DCI being a first descrambling times; or alternatively

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

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

In the embodiment of the present disclosure, the first number of descrambles corresponds to the first number of scrambles in the above-described embodiment, and the second number of descrambles corresponds to the second number of scrambles in the above-described embodiment. Therefore, if the number of descrambling times when the descrambling is successful is the first number of descrambling times, the corresponding base station indication is an indication of the first number of scrambling times, namely an indication of starting HARQ feedback. And if the descrambling times when the descrambling is successful are the second descrambling times, the corresponding base station indication is the indication of the second scrambling times, namely the indication of the forbidden HARQ feedback.

In some embodiments, the method further comprises:

descrambling the DCI by using a C-RNTI;

Because the base station can utilize the C-RNTI to scramble DCI, the UE correspondingly adopts the C-RNTI to descramble. 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 comprises:

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

and in response to the first descrambling failure, performing second descrambling on the DCI by using a shift sequence obtained by shifting the C-RNTI.

Here, the base station scrambles DCI twice with a shift sequence of the C-RNTI, respectively. Thus, the UE also descrambles with the C-RNTI and the shifted sequence of C-RNTI.

If the UE fails to descramble for the first time, the number of times of descrambling is described as the first number of times of descrambling, and at this time, it may be determined that the base station indicates to disable HARQ feedback. However, since other indication information is also carried in the DCI, the UE may descramble the DCI for the second time. Of course, if the second descrambling is not yet successful, it may be an error in information reception or a DCI information failure.

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

The above embodiments have been described in the related manner, and will not be described in detail here.

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

step S701, receiving scheduling information of a scheduling 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 forbidden the HARQ feedback;

step S703, if the received scheduling information is used to schedule the HARQ process in the HARQ process group corresponding to the HARQ feedback, determining that the base station stealth indication enables 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 disabled HARQ process, the UE may directly determine that the base station indicates to disable HARQ feedback, so that the UE may disable HARQ feedback when the UE subsequently receives and transmits data corresponding to the process.

In contrast, if the scheduling information received by the UE is that the HARQ process is enabled, the UE enables HARQ feedback when the UE subsequently receives data corresponding to the process.

Therefore, the UE confirms whether the scheduled HARQ process belongs to the enabled HARQ process or the disabled HARQ process according to the received scheduling information of the HARQ process, and can 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 transmits HARQ configuration information to the UE using RRC signaling, the UE may determine in advance a correspondence 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 HARQ enabled processes, and the remaining processes belong to HARQ disabled processes. Thus, after receiving the scheduling instruction subsequently, the UE can directly determine whether to disable the HARQ process according to the identifier of the scheduled HARQ process.

The embodiment of the base station side has been described in detail for the HARQ configuration information, and will not be described here 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, a PUCCH resource is activated in response to the activation instruction, and whether the base station stealth indication disables the HARQ feedback is determined; and the PUCCH resource has a mapping relation with the forbidden HARQ feedback or the started HARQ feedback.

After receiving an activation instruction issued by a base station, the UE feeds back information based on PUCCH resources 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 instructions include:

DCI or SIB.

In some embodiments, the method further comprises:

Since the UE does not know in advance the identity or number or the like corresponding to the PUCCH resource for disabling HARQ feedback specified by the base station, the UE may acquire the correspondence between the indication for enabling or disabling HARQ feedback and each PUCCH resource according to the resource configuration parameter. In this way, after the activation instruction of the base station is received subsequently, whether the HARQ feedback is disabled can be determined according to the PUCCH resource activated 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 here again.

Embodiments of the present disclosure also provide examples of:

example one

And (3) carrying out secondary scrambling on the DCI by using the 1-bit HARQ forbidden indication information, and implicitly indicating the HARQ feedback state. The HARQ disable indication information takes a value of "0" or "1", where "0" identifies that HARQ feedback is enabled and "1" identifies that HARQ feedback is disabled.

As shown in fig. 11A, the flow chart of the implicit indication at the base station side determines the scrambling mode to be adopted for DCI according to the feedback state of the HARQ process at the base station side. The method comprises the following steps:

step S11, judging whether the HARQ feedback is forbidden;

step S12, if the HARQ process disables HARQ feedback, scrambling DCI by using indication information of 1bit of disabled HARQ feedback;

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

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

S21, descrambling by using a C-RNTI sequence;

s22, performing CRC check to judge whether descrambling is successful;

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 is successful by using the second descrambling sequence, the HARQ feedback is forbidden;

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

Example two

Two HARQ process groups are divided into an HARQ process group and a forbidden HARQ process group in the HARQ entity. Wherein, the processes belonging to the HARQ process group are all enabled with HARQ feedback, and the processes belonging to the HARQ process group are all disabled with HARQ feedback.

Illustratively, as shown in fig. 12, it is assumed that the number of HARQ processes supported in the NTN network is M. The size of the enabled HARQ process group 11 is 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.

After determining the HARQ feedback state of the HARQ process, the base station side selects the HARQ process from the corresponding HARQ process group to schedule. 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 UE can judge the feedback state of the HARQ process 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 disabled HARQ feedback indication, in the embodiment of the present disclosure, a default parameter set { PUCCH resource, dl-DataToUL-ACK } for disabling the HARQ feedback function may be set in the RRC parameter, where dl-DataToUL-ACK is a higher layer feedback data resource.

For example, disabling HARQ feedback is indicated by setting the first data of the PUCCH resource and the first data of the d1-DataToUL-ACK to values that have not been used in one protocol, and then the base station implements activation of data disabling HARQ feedback in the above-mentioned parameter set by setting the PUCCH resource indication field (PUCCH resource indicator) of DCI to 0 and the HARQ feedback slot indication field (PDSCH-to-harq_ feedback timing indicator) of PDSCH to 0. In this way, the UE can determine the time-frequency domain position of the PUCCH feedback indicating the disabled HARQ feedback after receiving the DCI, thereby implementing the dynamic indication of the disabled HARQ feedback of the HARQ process.

As shown in fig. 13A, in the method for determining the frequency domain position of the PUCCH feedback on the user side, the index number indicating the frequency domain position of the PUCCH feedback may be indicated by using the PUCCH resource indication field or using the PUCCH common resource in the system message 1 (SIB 1) in various formats of DCI. And determining the frequency domain position of the PUCCH feedback in the PUCCH resource set by using 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 method for determining the time domain position of PUCCH feedback at the user side may determine the index number in the RRC parameter dl-DataToUL-ACK table 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 query the dl-DataToUL-ACK table according to the index number, so as to determine the K1 value, where K1 represents the time domain relationship between PDSCH and HARQ feedback.

By the method provided by the embodiment of the disclosure, the disabling of the HARQ feedback can be indicated implicitly, and the HARQ disabling 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, the 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;

and an indication module 120, configured to implicitly indicate to the UE whether to disable the HARQ feedback according to the HARQ feedback status 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 of times to scramble the DCI in response to the HARQ feedback state information being HARQ feedback enabled;

and a first issuing submodule configured to issue the DCI scrambled by the first scrambling times.

In some embodiments, the first scrambling number is 1.

In some embodiments, the indication module comprises:

a second determining submodule configured to determine a second scrambling number of times to scramble the DCI in response to the HARQ feedback state information being a disabled HARQ feedback;

and a second issuing sub-module configured to issue the DCI scrambled with the second scrambling number.

In some embodiments, the second scrambling number is 2.

In some embodiments, the scrambling module includes:

a first scrambling sub-module configured to perform first scrambling on the DCI with a C-RNTI in response to the HARQ feedback status information being disabling of the HARQ feedback;

and a second scrambling sub-module 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 sub-module configured to issue scheduling information for scheduling HARQ processes in response to the HARQ feedback status information being a forbidden HARQ feedback, where the scheduling information is used for scheduling HARQ processes in a forbidden HARQ process group for which the HARQ feedback is forbidden; or alternatively

And a fourth issuing sub-module configured to issue scheduling information for scheduling HARQ processes in response to the HARQ feedback status information being start HARQ feedback, where the scheduling information is used for scheduling HARQ processes in a forbidden HARQ process group for enabling the HARQ feedback.

In some embodiments, the apparatus further comprises:

the first downlink module is configured to downlink HARQ configuration information to the UE through RRC signaling, where the HARQ configuration information includes at least one of: the process identification of the HARQ enabling process, the process identification of the HARQ disabling process, the number of the HARQ enabling processes, the number of the HARQ disabling processes, the type of the process group of the HARQ enabling process, and the type of the process group of the HARQ disabling process.

In some embodiments, the indication module comprises:

a fourth issuing sub-module configured to issue an activation instruction for activating the PUCCH resource according to the HARQ feedback state information; and the PUCCH resource has a mapping relation with the forbidden HARQ feedback or the started HARQ feedback.

In some embodiments, the activation instructions include:

DCI or system message SIB.

In some embodiments, the apparatus further comprises:

a fifth issuing sub-module configured to issue a resource configuration parameter of the PUCCH resource before issuing the instruction; the resource allocation parameter is used for allocating the mapping relation.

In some embodiments, the resource configuration parameters include:

As shown in fig. 15, the 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 disabled HARQ feedback implicitly indicated by the base station;

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

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 descrambles of the DCI being a first number of descrambles; or alternatively

A third determining module configured to determine that the base station implicitly indicates to disable HARQ feedback in response to the number of descrambles of the DCI being a second number of descrambles; 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 a C-RNTI;

and a fourth determining module configured to determine the number of descrambling performed successfully by the DCI.

In some embodiments, the descrambling module comprises:

a first descrambling sub-module configured to perform a first descrambling on the DCI using a shift sequence obtained by shifting the C-RNTI;

and a second descrambling sub-module configured to perform a second descrambling on the DCI with the C-RNTI in response to the first descrambling failure.

the fourth determination module includes:

a third determining submodule configured to determine the number of descrambles as the first number of descrambles in response to the first descrambling being successful;

And a fourth determination submodule configured to determine the number of descrambles as the second number of descrambles in response to the first descrambling failure and the second descrambling success.

In some embodiments, the apparatus further comprises:

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

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 a HARQ process in a disabled HARQ process group corresponding to disabling the HARQ feedback;

and 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 the HARQ process in the HARQ process enabling group corresponding to the HARQ feedback enabling.

In some embodiments, the apparatus further comprises:

and the third receiving module is 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 determine whether the base station stealth indication disables the HARQ feedback in response to the activation instruction activating the PUCCH resource; and the PUCCH resource has a mapping relation with the forbidden HARQ feedback or the started HARQ feedback.

In some embodiments, the activation instructions include:

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 allocation parameter is used for allocating the mapping relation.

In some embodiments, the resource configuration parameters include:

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

Referring to fig. 16, the processing apparatus 800 of harq feedback may include at least one of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a 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, telephone 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 part 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 operation of the processing apparatus 800 at HARQ feedback. Examples of such data include instructions for any application or method operating on the processing means 800 of HARQ feedback, contact data, phonebook data, messages, pictures, video, etc. The memory 804 may be implemented by any type or combination of volatile or nonvolatile 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 disk.

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

The multimedia component 808 comprises a screen providing an output interface between the processing means 800 of the 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 input signals from a user. The touch panel includes at least one touch sensor to sense touch, swipe, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also a wake-up time and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. When the processing apparatus 800 for HARQ feedback is in an operation mode, such as a photographing 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 focal length and optical zoom capabilities.

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 external audio signals when the HARQ feedback processing apparatus 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 further 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 a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 814 includes at least one sensor for providing status assessment of various aspects of the processing apparatus 800 for HARQ feedback. For example, the sensor component 814 may detect an on/off state of the device 800, a relative positioning of components such as a display and keypad of the HARQ feedback processing apparatus 800, the sensor component 814 may also detect a change in position of the HARQ feedback processing apparatus 800 or a component of the HARQ feedback processing apparatus 800, the presence or absence of a user's contact with the HARQ feedback processing apparatus 800, an orientation or acceleration/deceleration of the HARQ feedback processing apparatus 800, and a change in temperature of the HARQ feedback processing apparatus 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects 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 gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication in a wired or wireless manner between the processing apparatus 800 of HARQ feedback and other devices. The processing means 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 one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one 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 apparatus 800 of HARQ feedback may be implemented by at least one Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a controller, a microcontroller, a microprocessor, or other electronic components for performing the above-described methods.

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

As shown in fig. 17, an embodiment of the present disclosure shows a structure of another HARQ feedback processing apparatus. The processing device of the HARQ feedback may be a base station according to an 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, the processing apparatus 900 for harq feedback includes a processing component 922 that further includes at least one processor, and memory resources represented by a memory 932 for storing instructions, such as applications, executable by the 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, the processing component 922 is configured to execute instructions to perform any of the methods described above as applied to the HARQ feedback processing device.

The HARQ feedback processing apparatus 900 may further include a power component 926 configured to perform power management of the HARQ feedback processing apparatus 900, a wired or wireless network interface 950 configured to connect the HARQ feedback processing apparatus 900 to a network, and an input output (I/O) interface 958. The processing means 900 of HARQ feedback may operate based on an operating system stored in a memory 932, such as Windows Server TM, mac OS XTM, unixTM, linuxTM, 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 disclosure 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 is to be understood that the invention is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. A processing method of HARQ feedback is provided, wherein the method is applied to a base station and comprises the following steps:

determining HARQ feedback state information according to the maximum time delay of the service requirement corresponding to the HARQ process or the requirement of data information quality; the HARQ feedback information indicates that the HARQ feedback is disabled or enabled; determining HARQ feedback state information according to the maximum time delay of the service requirement corresponding to the HARQ process or the requirement of data information quality; comprising the following steps: the maximum time delay of the service requirement corresponding to the HARQ process is larger than a preset time delay threshold value or the maximum packet loss rate corresponding to the data information quality is larger than a preset threshold value, and the forbidden HARQ feedback is determined; and/or, determining that the maximum time delay of the service requirement corresponding to the HARQ process is smaller than or equal to a preset time delay threshold value or the maximum packet loss rate is smaller than or equal to a preset threshold value, and starting HARQ feedback;

According to the HARQ feedback state information, implicitly indicating whether the HARQ feedback is forbidden or not to the User Equipment (UE); when the HARQ feedback corresponding to the HARQ process is disabled, the transmitting end directly transmits the next data packet without waiting for the HARQ feedback after transmitting the data packet.

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

and issuing the DCI scrambled by the first scrambling frequency.

4. A method according to claim 3, wherein the first scrambling number is 1.

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

And issuing the DCI scrambled with the second scrambling frequency.

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

7. The method of claim 6, wherein scrambling the DCI at least once with a C-RNTI comprises:

8. The method of claim 7, wherein the shifted 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 a UE whether to disable the HARQ feedback based on the HARQ feedback state information comprises:

And responding to the HARQ feedback state information to start HARQ feedback, and issuing scheduling information of a scheduling HARQ process, wherein the scheduling information is used for scheduling the HARQ process in an starting HARQ process group starting the HARQ feedback.

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

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

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

according to the HARQ feedback state information, an activation instruction for activating the PUCCH resource of the uplink physical control channel is issued; and the PUCCH resource has a mapping relation with the forbidden HARQ feedback or the started HARQ feedback.

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

downlink control information, DCI; or (b)

System message 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 method for processing HARQ feedback, wherein the method is applied to a terminal, and comprises:

the method comprises the steps of responding to whether HARQ feedback is forbidden or not, wherein the HARQ feedback is forbidden or enabled according to implicit indication of a base station; disabling or enabling the HARQ feedback is determined by the base station according to the maximum time delay of the service requirement corresponding to the HARQ process or the requirement of the data information quality; the maximum time delay of the service requirement corresponding to the HARQ process is greater than a preset time delay threshold value or the maximum packet loss rate corresponding to the data information quality is greater than a preset threshold value, and the method is corresponding to forbidden HARQ feedback; the maximum time delay of the service requirement corresponding to the HARQ process is smaller than or equal to a preset time delay threshold value or the maximum packet loss rate corresponding to the data information quality is smaller than or equal to a preset threshold value, and the starting of HARQ feedback is corresponding to the starting of the HARQ feedback; when the HARQ feedback corresponding to the HARQ process is disabled, the transmitting end directly transmits the next data packet without waiting for the HARQ feedback after transmitting the data packet.

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 a C-RNTI;

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

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

the determining the number of descrambling times performed by successful descrambling of the DCI includes:

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

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

receiving scheduling information of a scheduling 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 HARQ enabling process, the process identification of the HARQ disabling process, the number of the HARQ enabling processes, the number of the HARQ disabling processes, the type of the process group of the HARQ enabling process, and the type of the process group of the HARQ disabling process.

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

receiving an activation instruction;

responding to the activation instruction to activate PUCCH resources, and determining whether the base station stealth indication disables the HARQ feedback; and the PUCCH resource has a mapping relation with the forbidden HARQ feedback or the started HARQ feedback.

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 to a base station, and comprises:

The determining module is configured to determine HARQ feedback state information according to the maximum time delay of the service requirement corresponding to the HARQ process or the requirement of data information quality; the HARQ feedback information indicates that the HARQ feedback is disabled or enabled; the determining module is specifically configured to determine that the maximum time delay of the service requirement corresponding to the HARQ process is greater than a preset time delay threshold or the maximum packet loss rate corresponding to the data information quality is greater than a preset threshold, and disable HARQ feedback; and/or, determining that the maximum time delay of the service requirement corresponding to the HARQ process is smaller than or equal to a preset time delay threshold or the maximum packet loss rate is smaller than or equal to a preset threshold, and starting HARQ feedback;

the indicating module is configured to implicitly indicate whether the HARQ feedback is forbidden or not to the UE according to the HARQ feedback state information; when the HARQ feedback corresponding to the HARQ process is disabled, the transmitting end directly transmits the next data packet without waiting for the HARQ feedback after transmitting the data packet.

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

the feedback module is configured to respond to whether the HARQ feedback is disabled or not, which is implicitly indicated by the base station, and disable or enable the HARQ feedback; disabling or enabling the HARQ feedback is determined by the base station according to the maximum time delay of the service requirement corresponding to the HARQ process or the requirement of the data information quality; the maximum time delay of the service requirement corresponding to the HARQ process is greater than a preset time delay threshold value or the maximum packet loss rate corresponding to the data information quality is greater than a preset threshold value, and the method is corresponding to forbidden HARQ feedback; the maximum time delay of the service requirement corresponding to the HARQ process is smaller than or equal to a preset time delay threshold value or the maximum packet loss rate corresponding to the data information quality is smaller than or equal to a preset threshold value, and the starting of HARQ feedback is corresponding to the starting of the HARQ feedback;

When the HARQ feedback corresponding to the HARQ process is disabled, the transmitting end directly transmits the next data packet without waiting for the HARQ feedback after transmitting the data packet.

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

the processor is configured to execute the executable instructions, when the executable instructions are executed, to perform the steps in the method of processing HARQ feedback provided in any of the preceding claims 1 to 15 or 16 to 29.

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