CN110505045B

CN110505045B - Downlink control information feedback method and device

Info

Publication number: CN110505045B
Application number: CN201910759976.XA
Authority: CN
Inventors: 张飒
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2022-08-16
Anticipated expiration: 2039-08-16
Also published as: CN110505045A

Abstract

The disclosure relates to a downlink control information feedback method and a device, which are applied to a base station, wherein the method comprises the following steps: configuring a feedback information bit, wherein the feedback information bit is used for transmitting feedback information of downlink control information; and receiving the feedback information of the downlink control information at the feedback information bit. By using the implementation modes provided by the embodiments of the present disclosure, the successful scheduling of data can be ensured and the waste of terminal energy consumption can be avoided through an effective feedback mode.

Description

Downlink control information feedback method and device

Technical Field

The present disclosure relates to the field of wireless communication technologies, and in particular, to a downlink control information feedback method and apparatus.

Background

The endurance of the user equipment is an important aspect of the user experience, which will affect the experience of the 5G terminal and/or the service. For this reason, the 5G system introduces many technical features for indicating a change in the terminal behavior so that the terminal can enter a power saving state under appropriate conditions to save the terminal power. Such state switching involves various configuration changes, such as switching of bandwidth units (BWPs), switching of Physical Downlink Control Channel (PDCCH) detection periods, switching between cross slot scheduling and simultaneous slot scheduling, and so on, and signaling for triggering these switching is usually indicated by Downlink Control Information (DCI).

However, in the prior art, the situation of unsuccessful reception of the downlink control information DCI occurs, and the missed detection rate is relatively high. This may cause unsuccessful or asynchronous state switching, and further cause a problem that data cannot be scheduled or terminal energy consumption is wasted.

For example, the switching between the cross-slot scheduling and the simultaneous-slot scheduling is usually indicated by the scheduling DCI, and when the cross-slot scheduling is switched to the simultaneous-slot scheduling, if the scheduling DCI indicating the switching is not successfully received (missed), the terminal will not enter a state of a Physical Downlink Shared Channel (PDSCH) buffer, which may cause a situation that data cannot be scheduled, and affect system throughput. When the scheduling is switched from the slotted scheduling to the cross-slotted scheduling, if the scheduling DCI indicating the switching is not successfully received at the terminal side, the terminal cannot enter a power saving state without buffering the PDSCH, so that the energy consumption of the terminal is wasted.

Disclosure of Invention

The disclosure provides a downlink control information feedback method and device, which are used for ensuring successful scheduling of data and avoiding terminal energy consumption waste through an effective feedback mode.

According to a first aspect of the present disclosure, a downlink control information feedback method is provided, which is applied to a base station, and the method includes:

configuring a feedback information bit, wherein the feedback information bit is used for transmitting feedback information of downlink control information;

and receiving the feedback information of the downlink control information at the feedback information bit.

In a possible implementation manner, receiving feedback information of the downlink control information at the feedback information bit includes:

and receiving the feedback information of the downlink control information at a feedback information bit corresponding to the downlink control information indicating the minimum scheduling time delay change for the first time.

In a possible implementation manner, the receiving, at the feedback information bit, feedback information of the downlink control information includes:

indicating one or more downlink control information needing to be fed back;

and receiving the feedback information of the downlink control information needing to be fed back at the feedback information bit.

In a possible implementation manner, the receiving, at the feedback information bit, feedback information of the downlink control information that needs to be fed back includes:

and receiving the feedback information of the downlink control information which arrives at the terminal at the latest in the plurality of downlink control information needing to be fed back at the feedback information bit.

In a possible implementation manner, the receiving, at the feedback information bit, the feedback information of the downlink control information that needs to be fed back further includes:

and receiving the joint feedback information of the downlink control information needing to be fed back at the feedback information bit.

In a possible implementation manner, the joint feedback information is information obtained by performing a logical and operation on feedback information of the plurality of downlink control information that needs to be fed back.

and receiving feedback information of the downlink control information which arrives at the terminal at the latest in the downlink control information associated with the physical downlink shared channel fed back as the negative response by the terminal at the feedback information bit.

In a possible implementation manner, the receiving, at the feedback information bit, feedback information of the downlink control information further includes:

and receiving feedback information of the downlink control information which arrives at the terminal at the latest in the downlink control information associated with the physical downlink shared channel of the acknowledgement fed back by the terminal at the feedback information bit.

According to a second aspect of the present disclosure, a downlink control information feedback method is provided, which is applied to a terminal, and the method includes:

acquiring a feedback information bit configured by a base station, wherein the feedback information bit is used for carrying feedback information of downlink control information;

and sending feedback information of the downlink control information at the feedback information bit.

In a possible implementation manner, the sending feedback information of downlink control information at the feedback information bit includes:

and sending the feedback information of the downlink control information at a feedback information bit corresponding to the downlink control information indicating the minimum scheduling time delay change for the first time.

In a possible implementation manner, the sending feedback information of downlink control information at the configured feedback information bit includes:

and sending feedback information of one or more downlink control information required to be fed back, which is indicated by the base station, in the feedback information bit.

In a possible implementation manner, the sending, at the feedback information bit, feedback information of one or more downlink control information that needs to be fed back and is indicated by a base station includes:

and sending the feedback information of the downlink control information which arrives at the terminal at the latest in the plurality of downlink control information needing to be fed back at the feedback information bit.

In a possible implementation manner, the sending, at the feedback information bit, feedback information of one or more downlink control information that needs to be fed back and is indicated by the base station further includes:

generating joint feedback information of the downlink control information needing to be fed back;

and sending the joint feedback information at the feedback information bit.

In a possible implementation manner, the generating joint feedback information of the plurality of downlink control information that needs to be fed back includes:

and performing logical AND operation on the feedback information of the plurality of downlink control information needing to be fed back to obtain the joint feedback information.

and if the physical downlink shared channel needing to be fed back with the negative response appears in the received physical downlink shared channels, sending feedback information of the downlink control information which reaches the terminal at the latest in the downlink control information associated with the physical downlink shared channel needing to be fed back with the negative response at the feedback information bit.

In a possible implementation manner, the sending feedback information of downlink control information at the configured feedback information bit further includes:

and if the received physical downlink shared channels all feed back the acknowledgement, sending acknowledgement feedback information at the feedback information bit.

According to a third aspect of the present disclosure, there is provided a downlink control information feedback apparatus, applied to a base station, the apparatus including:

a configuration unit configured to configure a feedback information bit, where the feedback information bit is used for transmitting feedback information of downlink control information;

a receiving unit configured to receive feedback information of the downlink control information at the feedback information bit.

In one possible implementation, the receiving unit is further configured to:

In a possible implementation manner, the apparatus further includes an indicating unit configured to indicate one or more downlink control information that needs to be fed back; the receiving unit is further configured to:

In one possible implementation, the receiving unit is further configured to:

In a possible implementation manner, the receiving unit is further configured to:

In one possible implementation, the receiving unit is further configured to:

According to a fourth aspect of the present disclosure, there is provided a downlink control information feedback apparatus, applied to a terminal, the apparatus including:

an obtaining unit, configured to obtain a feedback information bit configured by a base station, where the feedback information bit is used for carrying feedback information of downlink control information;

a sending unit configured to send feedback information of the downlink control information at the feedback information bit.

In one possible implementation manner, the sending unit is further configured to:

and sending the joint feedback information at the feedback information bit.

According to a fifth aspect of the present disclosure, there is provided a base station comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to carry out the executable instructions when executing the method of the first aspect of the present disclosure.

According to a sixth aspect of the present disclosure, there is provided a terminal comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to carry out the method of the second aspect of the disclosure when executing the executable instructions.

According to a seventh aspect of the present disclosure, there is provided a non-transitory computer readable storage medium having stored thereon computer program instructions, wherein the computer program instructions, when executed by a processor, implement the above-described method.

According to the various embodiments of the aspects of the present disclosure, by configuring an additional feedback information bit dedicated to carry feedback information of DCI in each carrier, and performing accurate feedback on the receiving condition of DCI in the additional feedback information bit, especially, the case that DCI reception is unsuccessful can be accurately fed back, and then retransmission is performed. Therefore, the missed detection rate of the DCI at the terminal can be effectively reduced, the successful receiving of the DCI is ensured, the successful switching between corresponding configurations (such as between cross-slot scheduling and simultaneous slot scheduling) is ensured, the successful scheduling of data can be ensured, and the energy consumption waste of the terminal is avoided.

Other features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

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

Fig. 1 shows a flowchart of a method for feeding back downlink control information according to an embodiment of the present disclosure.

Fig. 2 is a schematic flowchart of a method for feeding back downlink control information according to another embodiment of the present disclosure.

Fig. 3 is a schematic diagram of a minimum scheduling delay K0min handover according to an embodiment of the present disclosure.

Fig. 4 is a schematic diagram of time indication of downlink data scheduling according to an embodiment of the present disclosure.

Fig. 5 is a schematic diagram of a feedback manner of downlink control information according to an embodiment of the present disclosure.

Fig. 6 is a schematic diagram of a feedback manner of downlink control information according to another embodiment of the present disclosure.

Fig. 7 is a schematic diagram illustrating a feedback manner of downlink control information according to yet another embodiment of the present disclosure.

Fig. 8 is a schematic diagram of a feedback manner of downlink control information according to still another embodiment of the present disclosure.

Fig. 9 is a schematic diagram of a feedback manner of downlink control information according to another embodiment of the present disclosure.

Fig. 10 is a schematic diagram of a feedback manner of downlink control information according to an embodiment of the present disclosure.

Fig. 11 is a schematic diagram of a feedback manner of downlink control information according to another embodiment of the present disclosure.

Fig. 12 is a schematic block structure diagram of a downlink control information feedback apparatus according to an embodiment of the present disclosure.

Fig. 13 is a block diagram illustrating a terminal 800 according to an example embodiment.

Fig. 14 is a block diagram illustrating a base station 1900 according to an example embodiment.

Detailed Description

Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present disclosure. It will be understood by those skilled in the art that the present disclosure may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present disclosure.

The implementation provided in the embodiment of the present disclosure may be applicable to a 5G (5generation) communication system, may also be applicable to a 4G communication system, a 3G communication system, and may also be applicable to various communication systems of subsequent evolution, for example, 6G, 7G, and the like.

The disclosed embodiments are also applicable to different network architectures including, but not limited to, relay network architectures, dual link architectures, and Vehicle-to-event (Vehicle-to-any-object communication) architectures.

The 5G CN in the embodiment of the present disclosure may also be referred to as a New Core (New Core), a 5G New Core, a Next Generation Core (NGC), or the like. The 5G-CN is set up independently of existing core networks, such as Evolved Packet Core (EPC).

A Base Station (BS) in the embodiments of the present disclosure may also be referred to as a Base Station device and a network element device, and is a device deployed in a radio access network to provide a wireless communication function. For example, the device providing the base station function in the 2G network includes a Base Transceiver Station (BTS) and a Base Station Controller (BSC), the device providing the base station function in the 3G network includes a node B (NodeB) and a Radio Network Controller (RNC), the device providing the base station function in the 4G network includes an evolved node B (eNB), the device providing the base station function in the Wireless Local Area Network (WLAN) is an access point (access point, AP), the device providing the base station function in the 5G New Radio (New Radio, NR) includes a node B (gnb) that continues to evolve, and the device providing the base station function in a future New communication system, etc.

A Terminal (Terminal) in the embodiments of the present disclosure may refer to various forms of an access Terminal, a subscriber unit, a user equipment, a subscriber Station, a Mobile Station (MS), a remote Station, a remote Terminal, a Mobile device, a user Terminal, a Terminal equipment (Terminal equipment), a wireless communication device, a user agent, or a user equipment. The user equipment may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a user equipment in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), etc., which are not limited by the disclosed embodiments.

The embodiment of the disclosure defines a unidirectional communication link from an access network to a terminal as a downlink DL, data transmitted on the downlink is downlink data, and a transmission direction of the downlink data is called a downlink direction; and the unidirectional communication link from the terminal to the access network is uplink UL, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is referred to as uplink direction.

It should be understood that the term "and/or" herein is only one kind of association relationship describing the association object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document indicates that the former and latter related objects are in an "or" relationship.

"plurality" appearing in embodiments of the present disclosure means two or more. The descriptions of the first, second, etc. appearing in the embodiments of the present disclosure are only for illustrating and differentiating the objects, and do not represent the order or the particular limitation of the number of the devices in the embodiments of the present disclosure, and do not constitute any limitation to the embodiments of the present disclosure.

The term "connect" in the embodiments of the present disclosure refers to various connection manners, such as direct connection or indirect connection, to implement communication between devices, which is not limited in this respect.

The expression "network" and "system" appearing in the embodiments of the present disclosure are the same concept, and the communication system is a communication network. The term "connected" in the embodiments of the present disclosure refers to various connection manners, such as direct connection or indirect connection, for example, different devices are connected through a communication interface, and is not limited at all.

The 5G system has many improvements, such as larger transmission bandwidth, larger subcarrier spacing, smaller processing unit, more antennas, etc., but these improvements increase the energy consumption of the 5G terminal by several times compared with the 4G terminal. Because the volume of the terminal and the battery capacity in unit volume are not greatly improved at present, the service life of the battery of the 5G terminal is difficult to meet daily use requirements, the current situation greatly influences the use experience of users, a 5G energy-saving project is established for 3GPP standardization organization, a technology for saving the electric energy consumption of the terminal is expected to be excavated, and the problem of large energy consumption of the 5G terminal is solved.

The energy saving of the terminal can be performed from multiple aspects, such as switching of a Downlink Physical Control Channel (PDCCH) (Physical Downlink Control Channel, PDSCH) detection period, PDCCH blanking, BWP switching, Cross-slot scheduling (Cross-slot scheduling) with a minimum scheduling delay K0min greater than 0, and the like.

Cross-slot scheduling:

cross-slot scheduling means that a time slot in which scheduling information (DCI) is received and a Physical Downlink Shared Channel (PDSCH) scheduled by the DCI are not in the same time slot. 5GNR to increase scheduling flexibility, the scheduled data may be located in the last slots of the scheduling information. The cross-slot scheduling of R15 is implemented by configuring a TDRA table, which is an indication table of maximum 16 rows, as shown in table 1 below, and the first column is a sequence number, i.e., index. The second column is a value of K0, where K0 represents a time interval between a PDSCH (Physical Downlink Shared Channel) and a PDCCH (Physical Downlink Control Channel), for example, when K0 is 1, the PDCCH is in a time slot n, and then the corresponding PDSCH is in a time slot n + 1. The third column is mapping type, a represents slot-based mapping (meaning that a slot is a scheduling unit and the PDCCH is always located on the first 1, 2 or 3 symbols of a slot), and B represents mini-slot-based mapping (the exponential symbols are a scheduling unit, and according to the number of symbols of a mini-slot, the starting position of the PDCCH is not limited to the first symbol in the slot, for example, if the length of the mini-slot is 7 symbols, the PDCCH may be located on the first symbol, or may be located on the 8 th symbol). The fourth column is a Start and Length Indication Value (SLIV), and the numerical Value of the column indicates the Start symbol position of the PDSCH and the persistent symbol Length of the PDSCH.

Index	K0	Type	SLIV
				0	0	A/B	XXX
1	1	A/B	XXX
				2	4	A/B	XXX
3	6	A/B	XXX
				…	…	…	…
15	32	A/B	XXX

TABLE 1

From the energy-saving perspective, Cross-slot scheduling may allow the terminal to avoid unnecessary PDSCH buffering and may use a smaller PDCCH reception bandwidth to save terminal energy consumption. However, the minimum K0 in the TDRA table configured in the current cross-slot scheduling may be equal to 0 and greater than 0 at the same time, and since the terminal does not know whether the K0 of the current slot is greater than 0 or equal to 0, it is necessary to keep buffering of the PDSCH all the time, in the new version, the minimum K0 is required to be greater than 0, so as to enable the terminal to keep the state of cross-slot scheduling to save energy (because the data of the current slot is indicated by the DCI of the previous slot or the earlier slot, it is known whether there is data to be received in the current slot before the current indication arrives, and the PDSCH may not be received in no time). However, in the case of data continuous scheduling, setting K0 to 0 (i.e., simultaneous slot scheduling) allows the terminal to achieve a better performance balance in terms of throughput, latency, and the like, and therefore, it is necessary to switch between minimum K0 to 0 and minimum K0> 0.

Fig. 3 is a schematic diagram of a minimum scheduling delay K0min handover according to an embodiment of the present disclosure. As shown in fig. 3, when switching from the simultaneous slot scheduling (Same-slot scheduling) to the cross slot scheduling (cross-slot scheduling), the base station performs scheduling in a manner that the minimum scheduling delay K0min is greater than 0 after sending a switching indication. If the handover indication is missed by the terminal, the terminal also considers that the current minimum scheduling delay K0min is 0, and the terminal still needs to buffer the PDSCH. The terminal cannot enter a state of not buffering pdsch (within data buffer), and thus, the terminal cannot save power consumption.

However, when switching from cross-slot scheduling (cross-slot scheduling) to simultaneous-slot scheduling (Same-slot scheduling), the base station may perform scheduling in a manner that the minimum scheduling delay K0min is 0 after sending the switching instruction. If the handover indication is missed by the terminal, the terminal may also consider that the current minimum scheduling delay K0min is greater than 0, and the terminal may not buffer the pdsch (without data buffer). When the terminal is scheduled by the base station with DCI K0 min-0, the terminal cannot receive the PDSCH of the current time slot because the terminal does not buffer the PDSCH of the current time slot, which results in that the throughput of the system is affected by the fact that the terminal cannot be scheduled.

HARQ-ACK feedback:

hybrid Automatic Repeat reQuest (HARQ) is a technology combining fec (forward Error correction) and arq (Automatic Repeat reQuest) methods. FEC adds redundant information to enable the receiving end to correct a portion of errors, thereby reducing the number of retransmissions. For the error that the FEC cannot correct, the receiving end requests the transmitting end to retransmit the data through an ARQ mechanism. The receiving end uses an error detection code, usually a Cyclic Redundancy Check (CRC) Check, to detect whether the received data packet is erroneous. If there is no error, the receiving end will send a positive Acknowledgement (ACK) to the sending end, and after the sending end receives the ACK, the sending end will send the next data packet. If the data packet is wrong, the receiving end discards the data packet and sends a negative acknowledgement NACK to the sending end, and the sending end retransmits the same data after receiving the NACK, but only ACK is fed back by the HARQ aiming at the PDCCH, and the receiving is successful because the acknowledgement is correct. When not being decoded, the terminal considers that the base station does not send the PDCCH to the terminal, so that no information is fed back.

Fig. 4 is a schematic diagram of time indication of downlink data scheduling according to an embodiment of the present disclosure. The downlink data scheduling time indication is shown in fig. 4. In a 5G NR (New Radio, New air interface), units K0 and K1 are slot slots, K0 represents a slot interval between a PDSCH (Physical Downlink Shared Channel) and a PDCCH (Physical Downlink Control Channel), the PDSCH is used for transmitting Downlink data, and the PDCCH is used for transmitting DCI (Downlink Control Information). K1 denotes the time interval of HARQ-ACK feedback and PDSCH.

In the protocol corresponding to the embodiment of the present disclosure, except that the deactivated DCI of the SPS has ACK feedback for the DCI, the ACK/NACK feedback is associated with user data. I.e. only the reception of PDSCH is fed back. In case that the feedback information is not multiplexed, if the terminal does not detect a valid PDCCH, no feedback is made. At this time, if the base station has transmitted the PDCCH and the PDSCH and has not received any feedback, it is considered as a DTX (discontinuous transmission) state, that is, the PDCCH is not correctly received by the terminal. If the feedback information needs to be multiplexed, the base station cannot judge whether the terminal correctly decodes the PDCCH because the terminal feeds back NACK when the PDCCH is not received or the PDSCH scheduled by the PDCCH is not correctly decoded.

Dynamic HARQ-ACK codebook (Dynamic HARQ-ACK codebook):

in LTE, under the condition of time division duplex TDD, multiple downlink subframes correspond to one uplink subframe, so HARQ-ACKs of data of multiple downlink subframes can be fed back in the same uplink subframe, for example, in a multiplexing (multiplexing) manner. Under the condition of adopting the dynamic HARQ-ACK codebook, the DCI is counted to determine the number of the HARQ-ACK bits fed back. In LTE, DCI schedules one PDSCH to include one TB, or may include 2 TBs, corresponding to 1 and 2 HARQ-ACK bits, respectively. If 5 DCIs schedule 5 PDSCH and each PDSCH contains only 1 TB, 5 bits need to be fed back.

In LTE, DCI introduces a Downlink Assignment indication, DAI (Downlink Assignment Index) field to tell the terminal how many subframes contain Downlink transmission in the HARQ feedback window. The DAI field of the downlink DCI includes counter DAI (count DAI) and total DAI (total DAI).

Wherein, the counter DAI in LTE TDD is defined as follows:

the value of the counter Downlink Allocation Indicator (DAI) in DCI format 1/1a/1B/1D/2/2A/2B/2C/2D represents the cumulative number if the terminal is configured with the higher layer parameter codebook size Determination-r13 ═ DAI. Wherein there is a { serving cell, subframe } pair of PDSCH transmissions associated with PDCCH/EPDCCH or PDCCH/EPDCCH indicating a downlink SPS release until the current serving cell and current subframe, first the serving cell sequence number (index) is incremented, then the subframe sequence number (index) within subframe(s) n-K is incremented, where K ∈ K.

Total DAI in LTE TDD is defined as follows:

the value of the total DAI in DCI format 1/1a/1B/1D/2/2A/2B/2C/2D represents the total number of serving cell, subframe pairs in which PDSCH transmission associated with PDCCH/EPDCCH or PDCCH/EPDCCH indicating downlink SPS release should be updated from subframe to subframe, up to the current subframe in subframe n-k,

the value of the total DAI in DCI format 1 represents the total number of serving cell, subframe pairs in which PDSCH transmissions associated with PDCCH/EPDCCH or PDCCH/EPDCCH indicating a downlink SPS release. Up to the current one of the subframes and should be updated from the following positions: subframe to subframe. .

Examples of the counter DAI and total DAI are shown in Table 2. Cell 1 has DCI scheduling downlink data in each even subframe, and cell 2 has DCI scheduling downlink data in each subframe.

TABLE 2

For a certain feedback time, the total DAI in LTE is the total amount of DCI sent by the base station in all cells from the first subframe to the current subframe. The counting DAI is the sum of the accumulated counting of the DCI times from the first cell to the current cell sent by the base station in the current subframe and the total DAI corresponding to the previous subframe.

The DAI of NR is different from LTE, and since NR can have multiple PDCCH monitoring time within one subframe and supports local slot scheduling (corresponding to K0 equal to 0 in fig. 3) and cross-slot scheduling (corresponding to K0 greater than 0 in fig. 3), the pair { cell, subframe } is replaced by the pair { cell, PDCCH monitoring time } in the definition of DAI. The determination of the NR dynamic HARQ-ACK codebook is also based on the counter DAI and the total DAI, 5G NR compared to LTE, where the { cell, subframe } pair ({ serving cell, subframe } -pair) (s)) is changed to { cell, PDCCH monitoring time } pair ({ serving cell, PDCCH monitoring interference } -pair (s)).

For a certain PUCCH (Physical Uplink Control Channel), the total DAI in the NR is the total amount of DCI transmitted by the base station in all cells from the first DAI counting time to the current DAI counting time in the set of Physical downlink Control Channel monitoring times. The counting DAI is the sum of the total DAI corresponding to the previous DAI counting time and the accumulated counting of DCI times from the first cell to the current cell sent by the base station at the current DAI counting time in the physical downlink control channel monitoring time set.

Since the DAI is indicated by 2 bits, the numerical value of the DAI in the DCI is obtained in the protocol according to table 3 below.

TABLE 3

The DAI count in the case of carrier aggregation is shown in table 4 below:

TABLE 4

The C-DAI counts from small to large according to the cell number at the same DAI count time, and the indication in DCI is as shown in table 5 below:

TABLE 5

Fig. 1 shows a flowchart of a method for feeding back downlink control information according to an embodiment of the present disclosure. As shown in fig. 1, applied to a base station, the method may include:

s110: and configuring a feedback information bit, wherein the feedback information bit is used for transmitting feedback information of the downlink control information.

Specifically, when the transmission positions of the feedback information of the multiple downlink physical shared channels PDSCH are configured as the same uplink resource, that is, when the feedback information is multiplexed, the base station may configure the feedback information bits in each carrier. Wherein, in an embodiment of the present disclosure, the size of the feedback information bit may be 1 bit. Of course, in other embodiments of the present disclosure, the size of the feedback information bit may also be other values, and the present disclosure does not limit this. The feedback information bit, that is, the uplink resource for carrying the feedback information, is a transmission position of the feedback information.

Fig. 5 is a schematic diagram of a feedback manner of downlink control information according to an embodiment of the present disclosure. As shown in fig. 5, 1-bit feedback information bit is configured on the current carrier for transmitting feedback information HARQ-ACK of downlink control information DCI.

S120: and receiving the feedback information of the downlink control information at the feedback information bit.

And the base station receives the feedback information of the DCI from the terminal at the configured feedback information bits.

In an embodiment of the present disclosure, the base station may indicate one or more downlink control information DCI that needs to be fed back to the terminal;

and the base station receives the feedback information of the downlink control information DCI which needs to be fed back and is indicated by the feedback information bit.

Specifically, in an embodiment of the present disclosure, the base station indicates to the terminal a DCI which needs to be fed back. As shown in fig. 5, in this example, the base station indicates that the downlink physical control channel PDCCH located in the time slot m needs to be fed back, in which case the terminal feeds back the PDCCH decoding situation in the time slot m according to the indication of the base station at a feedback information bit, that is, sends the feedback information of the DCI carried by the PDCCH in the time slot m (the DCI is the content of the PDCCH bearer) at the feedback information bit. The base station accordingly receives the DCI carried by the PDCCH in the transmission slot m in the feedback information bit.

Fig. 6 is a schematic diagram of a feedback manner of downlink control information according to another embodiment of the present disclosure. In another embodiment of the present disclosure, the base station may indicate a plurality of pieces of downlink control information DCI which need to be fed back to the terminal, and for this case, the terminal may select to feed back the DCI which arrives at the terminal latest among the plurality of pieces of DCI which need to be fed back and are indicated by the base station, that is, send, in the feedback information bit, the feedback information of the downlink control information which arrives at the terminal latest among the plurality of pieces of downlink control information which need to be fed back. Correspondingly, the base station receives the feedback information at the feedback information bit, where the received feedback information is the feedback information of the downlink control information which arrives at the terminal at the latest among the multiple downlink control information which needs to be fed back. As shown in fig. 6, in an embodiment of the present disclosure, a base station instructs a terminal to feed back DCI corresponding to PDCCHs in time slots m and m +2, and PDSCHs scheduled by PDCCHs in m and m +2 time slots are located in the same PDSCH HARQ feedback window (PDSCH feedback window), because the DCI corresponding to the PDCCH in the m +2 time slot arrives at the terminal at the latest, the terminal feeds back a decoding condition of the PDCCH in the time slot m +2 at a feedback information bit, that is, at the feedback information bit, and sends feedback information of the DCI corresponding to the PDCCH in the time slot m +2 to the base station. Correspondingly, the base station receives the feedback information of the DCI corresponding to the PDCCH in the time slot m +2 sent by the terminal at the feedback information bit.

Fig. 7 is a schematic diagram illustrating a feedback manner of downlink control information according to still another embodiment of the present disclosure. In an embodiment of the present disclosure, the base station may indicate a plurality of downlink control information DCI needing to be fed back to the terminal, and for this case, the terminal may further select to send joint feedback information of the plurality of DCI needing to be fed back at the feedback information bit. Correspondingly, the base station may receive the joint feedback information of the downlink control information that needs to be fed back at the feedback information bit.

In an embodiment of the present disclosure, the joint feedback information may be information obtained by performing a logical and operation on feedback information of the DCI needing to be fed back. As shown in fig. 7, in this example, the base station instructs the terminal to feed back DCI corresponding to PDCCH in time slot m and time slot m +2, and PDSCH scheduled by PDCCH in time slot m and m +2 is in the same PDSCH feedback window, and the CDAI and TDAI terminals know that the feedback information of DCI corresponding to PDCCH in time slot m +2 is NACK (information 0), and the feedback information of DCI corresponding to PDCCH in time slot m is ACK (information 1), then the joint feedback information of the two DCI required to be fed back obtained through logical and operation is NACK (information 0). Correspondingly, the base station receives the NACK feedback result at the feedback information bit, and performs corresponding processing such as retransmission.

In an embodiment of the present disclosure, the base station may not indicate the sending timing of the feedback information of the DCI, that is, the base station does not indicate the DCI which needs to be fed back. Correspondingly, if decoding errors occur in multiple PDSCHs, the terminal may feed back DCI corresponding to the PDSCH which is negative acknowledgement NACK (i.e., the PDSCH decoding error is received unsuccessfully) to the terminal at the latest in the feedback information bit. That is, in the feedback information bits, the feedback information of the DCI which arrives at the terminal at the latest among the DCI associated with the PDSCH to which the terminal feeds back NACK (DCI corresponding to the PDCCH which schedules the PDSCH) is transmitted. Correspondingly, the base station receives the DCI feedback information which arrives at the terminal at the latest in the DCI associated with the PDSCH which is fed back as the negative response by the terminal at the feedback information bit. Fig. 8 is a schematic diagram of a feedback manner of downlink control information according to an embodiment of the present disclosure. Under the condition that the base station does not indicate which time slot DCI corresponding to the PDCCH needs to be fed back, as shown in fig. 8, the PDSCHs of time slots m +3, m +4, and m +5 are located in the same PDSCH feedback window, the PDCCH of the PDSCH in scheduling time slot m +3 is located in time slot m +2, the PDCCH of the PDSCH in scheduling time slot m +4 is located in time slot m +1, and the PDCCH of the PDSCH in scheduling time slot m +5 is located in time slot m + 3. And the terminal needs to feed back the decoding condition of the DCI corresponding to the PDCCH in the time slot m +2, that is, send the feedback information of the DCI corresponding to the PDCCH in the time slot m +2 at the feedback information bit. Correspondingly, the feedback information received by the base station at the feedback information bit is the feedback information of the DCI corresponding to the PDCCH in the time slot m +2 sent by the terminal.

In another embodiment of the present disclosure, the base station may not indicate the sending timing of the feedback information of the DCI, that is, the base station does not indicate the DCI which needs to be fed back. Correspondingly, if the PDSCHs are all decoded correctly, the terminal may feed back DCI corresponding to the PDSCH which is an acknowledgement ACK (i.e., the PDSCH is decoded correctly and received successfully) to the terminal at the feedback information bit. That is, in the feedback information bits, the feedback information of the DCI which arrives at the terminal at the latest among the DCI associated with the PDSCH to which the terminal feeds back ACK (DCI corresponding to the PDCCH which schedules the PDSCH) is transmitted. Correspondingly, the base station receives the feedback information of the DCI which arrives at the terminal at the latest in the DCI associated with the PDSCH which feeds back ACK to the terminal in the feedback information bit. Fig. 9 is a schematic diagram of a feedback manner of downlink control information according to another embodiment of the present disclosure. As shown in fig. 9, the PDSCH in time slot m +3 and time slot m +4 and time slot m +5 are located in the same PDSCH decoding window, the PDCCH in the PDSCH in scheduling time slot m +3 is located in time slot m +2, the PDCCH in the PDSCH in scheduling time slot m +4 is located in time slot m +1, and the PDCCH in the PDSCH in scheduling time slot m +5 is located in time slot m + 3. The PDSCH in time slot m +3, time slot m +4, and time slot m +5 is decoded successfully, the corresponding PDCCHs are located in time slot m +2 and time slot m +1, respectively, and the terminal needs to feed back the decoding condition of the DCI corresponding to the PDCCH in time slot m +2, that is, send the feedback information of the DCI corresponding to the PDCCH in time slot m +2 at the feedback information bit.

In an embodiment of the present disclosure, when the transmission positions of the feedback information of the multiple downlink physical shared channels PDSCH are configured as different uplink resources, that is, when the feedback information is not multiplexed. The base station may also indicate the DCI required to be fed back, and the terminal transmits the feedback information of the DCI required to be fed back on the uplink resource (feedback information transmission position, feedback information bit) corresponding to the DCI required to be fed back according to the indication of the base station. Fig. 10 is a schematic diagram of a feedback manner of downlink control information according to an embodiment of the present disclosure. As shown in fig. 10, the base station indicates that the DCI corresponding to the PDCCH in time slot m and time slot m +2 needs to be fed back, and if the feedback delay is 1 time slot, the terminal feeds back the DCI corresponding to the PDCCH in time slot m in the uplink UL subframe of time slot m +1, and feeds back the DCI corresponding to the PDCCH in time slot m +2 in the uplink UL subframe of time slot m + 3. Correspondingly, the base station receives the feedback information of the DCI corresponding to the PDCCH in the time slot m in the uplink UL subframe of the time slot m +1, and receives the feedback information of the DCI corresponding to the PDCCH in the time slot m +2 in the uplink UL subframe of the time slot m + 3.

In another embodiment of the present disclosure, when the transmission positions of the feedback information of the multiple downlink physical shared channels PDSCH are configured as different uplink resources, that is, when the feedback information is not multiplexed. The terminal may also send the feedback information of the DCI at a feedback information sending position (feedback information bit) corresponding to the DCI where the minimum scheduling delay K0min is indicated to change for the first time. Correspondingly, the base station may receive the feedback information of the DCI at the feedback information transmission position (feedback information bit) corresponding to the DCI indicating the K0min change for the first time. The first indication of the change of the minimum scheduling delay K0min may be feedback when the first indication of the minimum scheduling delay K0min is smaller, or feedback when the first indication of the minimum scheduling delay K0min is larger, or feedback when the first indication of the minimum scheduling delay K0min is smaller or larger. Fig. 11 is a schematic diagram of a feedback manner of downlink control information according to another embodiment of the present disclosure. As shown in fig. 11, DCI indicating that K0min becomes larger for the first time may be fed back, for example, K0min indicated by time slot m is 1, and K0min indicated by time slot m +1 is 2, which is K0min larger for the first time, and fed back. At slot m +2, the indicated K0min is 1, but this is not the first time to indicate a smaller K0min, so no feedback is given. In another embodiment of the present disclosure, the DCI that the first indication K0min becomes smaller may also be fed back, for example, in fig. 11, K0min indicated by a time slot m +3 is 2, and K0min indicated by a time slot m +4 is 0, which is the smaller K0min indicated for the first time, so the feedback is performed. At slot m +5, the indicated K0min is 0, but this is not the first time to indicate a smaller K0min, so no feedback is given. Of course, in other embodiments of the present disclosure, the DCI indicating that K0min changes for the first time (whether becoming larger or smaller) may also be fed back. Correspondingly, the base station receives the feedback information of the DCI at a feedback information transmission position (feedback information bit) corresponding to the DCI.

Fig. 2 is a flowchart illustrating a method for feeding back downlink control information according to another embodiment of the present disclosure. As shown in fig. 2, applied to a terminal, the method may include:

s210: and acquiring a feedback information bit configured by the base station, wherein the feedback information bit is used for carrying feedback information of the downlink control information.

The feedback information bits (feedback information sending positions, uplink resources for carrying feedback information) are configured by the base station, the terminal obtains the feedback information bits (feedback information sending positions, uplink resources for carrying feedback information) configured by the base station, and the feedback information bits configured by the base station send the feedback information of the downlink control information DCI.

Specifically, when the transmission positions of the feedback information of the multiple downlink physical shared channels PDSCH are configured as the same uplink resource, that is, when the feedback information is multiplexed, the base station may configure the feedback information bits in each carrier. Wherein, in an embodiment of the present disclosure, the size of the feedback information bit may be 1 bit. Of course, in other embodiments of the present disclosure, the size of the feedback information bit may also be other values, and the present disclosure does not limit this.

S220: and sending feedback information of the downlink control information at the feedback information bit.

And the terminal sends the feedback information of the downlink control information DCI of the terminal at a feedback information bit configured by the base station.

In an embodiment of the present disclosure, the terminal may send, at the feedback information bit, feedback information of one or more downlink control information DCI that needs to be fed back and is indicated by the base station.

Specifically, in an embodiment of the present disclosure, the base station indicates a DCI which needs to be fed back. As shown in fig. 5, in this example, the base station indicates that the downlink physical control channel PDCCH located in the time slot m needs to be fed back, in which case the terminal feeds back the PDCCH decoding situation in the time slot m according to the indication of the base station at a feedback information bit, that is, sends the feedback information of the DCI carried by the PDCCH in the time slot m (the DCI is the content of the PDCCH bearer) at the feedback information bit. The base station accordingly receives the DCI carried by the PDCCH in the transmission slot m in the feedback information bit.

In another embodiment of the present disclosure, the base station may indicate a plurality of pieces of downlink control information DCI which need to be fed back, and for this case, the terminal may select to feed back the DCI which reaches the terminal latest among the plurality of pieces of DCI which need to be fed back and are indicated by the base station, that is, send, at the feedback information bit, the feedback information of the downlink control information which reaches the terminal latest among the plurality of pieces of downlink control information which need to be fed back. Correspondingly, the base station receives the feedback information of the downlink control information which arrives at the terminal at the latest in the plurality of downlink control information needing to be fed back at the feedback information bit. As shown in fig. 6, in an embodiment of the present disclosure, a base station instructs a terminal to feed back DCI corresponding to PDCCHs in time slots m and m +2, and PDSCHs scheduled by PDCCHs in m and m +2 time slots are located in the same PDSCH feedback window, because DCI corresponding to a PDCCH in an m +2 time slot arrives at the terminal at the latest, the terminal feeds back decoding conditions of the PDCCH in the time slot m +2 at a feedback information bit, that is, in the feedback information bit, and sends feedback information of DCI corresponding to the PDCCH in the time slot m +2 to the base station. Correspondingly, the base station receives the feedback information of the DCI corresponding to the PDCCH in the time slot m +2 sent by the terminal at the feedback information bit.

In an embodiment of the present disclosure, the base station may indicate a plurality of pieces of downlink control information DCI which need to be fed back to the terminal, and for this case, the terminal may further select to send joint feedback information of the plurality of pieces of DCI which need to be fed back at the feedback information bit. Correspondingly, the base station may receive the joint feedback information of the downlink control information that needs to be fed back at the feedback information bit.

In an embodiment of the present disclosure, the joint feedback information may be information obtained by performing a logical and operation on the feedback information of the DCI that needs to be fed back. As shown in fig. 7, in this example, the base station instructs the terminal to feed back DCI corresponding to PDCCH in time slot m and time slot m +2, and PDSCH scheduled by PDCCH in time slot m and m +2 is in the same PDSCH feedback window, and the CDAI and TDAI terminals know that the feedback information of DCI corresponding to PDCCH in time slot m +2 is NACK (information 0), and the feedback information of DCI corresponding to PDCCH in time slot m is ACK (information 1), then the joint feedback information of the two DCI required to be fed back obtained through logical and operation is NACK (information 0). Correspondingly, the base station receives the NACK feedback result at the feedback information bit, and performs corresponding processing such as retransmission.

In an embodiment of the present disclosure, the base station may not indicate the sending timing of the feedback information of the DCI, that is, the base station does not indicate the DCI which needs to be fed back. Correspondingly, if decoding errors occur in multiple PDSCHs, the terminal may feed back DCI corresponding to the PDSCH which is negative acknowledgement NACK (i.e., the PDSCH decoding error is received unsuccessfully) to the terminal at the latest in the feedback information bit. That is, in the feedback information bits, the feedback information of the DCI which arrives at the terminal at the latest among the DCI associated with the PDSCH to which the terminal feeds back NACK (DCI corresponding to the PDCCH which schedules the PDSCH) is transmitted. Correspondingly, the base station receives the DCI feedback information which arrives at the terminal at the latest in the DCI associated with the PDSCH which is fed back as the negative response by the terminal at the feedback information bit. When the base station does not indicate which time slot DCI corresponding to the PDCCH needs to be fed back, as shown in fig. 8, the PDSCHs of time slots m +3, m +4, and m +5 are located in the same PDSCH decoding window, the PDCCH of the PDSCH in scheduling time slot m +3 is located in time slot m +2, the PDCCH of the PDSCH in scheduling time slot m +4 is located in time slot m +1, and the PDCCH of the PDSCH in scheduling time slot m +5 is located in time slot m + 3. And if the PDSCH decoding in the time slot m +3 and the time slot m +4 fails and the corresponding PDCCHs are located in the time slot m +2 and the time slot m +1, respectively, the terminal feeds back the decoding condition of the DCI corresponding to the PDCCH in the time slot m +2, that is, sends the feedback information of the DCI corresponding to the PDCCH in the time slot m +2 at the feedback information bit. Correspondingly, the base station receives the feedback information of the DCI corresponding to the PDCCH in the time slot m +2 sent by the terminal at the feedback information bit.

In another embodiment of the present disclosure, the base station may not indicate the sending timing of the feedback information of the DCI, that is, the base station does not indicate the DCI which needs to be fed back. Correspondingly, if the PDSCHs are all decoded correctly, the terminal may feed back DCI corresponding to the PDSCH which is an acknowledgement ACK (i.e., the PDSCH is decoded correctly and received successfully) to the terminal at the feedback information bit. That is, in the feedback information bits, the feedback information of the DCI which arrives at the terminal at the latest among the DCI associated with the PDSCH to which the terminal feeds back ACK (DCI corresponding to the PDCCH which schedules the PDSCH) is transmitted. Correspondingly, the base station receives the feedback information of the DCI which arrives at the terminal at the latest in the DCI associated with the PDSCH which feeds back the ACK by the terminal at the feedback information bit. As shown in fig. 9, the PDSCH in time slot m +3 and time slot m +4 and time slot m +5 are located in the same PDSCH decoding window, the PDCCH in the PDSCH in scheduling time slot m +3 is located in time slot m +2, the PDCCH in the PDSCH in scheduling time slot m +4 is located in time slot m +1, and the PDCCH in the PDSCH in scheduling time slot m +5 is located in time slot m + 3. The PDSCH in time slot m +3, time slot m +4, and time slot m +5 is decoded successfully, the corresponding PDCCHs are located in time slot m +2 and time slot m +1, respectively, and the terminal needs to feed back the decoding condition of the DCI corresponding to the PDCCH in time slot m +2, that is, send the feedback information of the DCI corresponding to the PDCCH in time slot m +2 at the feedback information bit.

In an embodiment of the present disclosure, when the transmission positions of the feedback information of the multiple downlink physical shared channels PDSCH are configured as different uplink resources, that is, when the feedback information is not multiplexed. The base station may also indicate the DCI required to be fed back, and the terminal transmits the feedback information of the DCI required to be fed back on the uplink resource (feedback information transmission position, feedback information bit) corresponding to the DCI required to be fed back according to the indication of the base station. As shown in fig. 10, the base station indicates that the DCI corresponding to the PDCCH in time slot m and time slot m +2 needs to be fed back, if the feedback delay is 1 time slot, the terminal feeds back the DCI corresponding to the PDCCH in time slot m in the uplink UL subframe of time slot m +1, and feeds back the DCI corresponding to the PDCCH in time slot m +2 in the uplink UL subframe of time slot m + 3. Correspondingly, the base station receives the feedback information of the DCI corresponding to the PDCCH in the time slot m in the uplink UL subframe of the time slot m +1, and receives the feedback information of the DCI corresponding to the PDCCH in the time slot m +2 in the uplink UL subframe of the time slot m + 3.

In another embodiment of the present disclosure, when the transmission positions of the feedback information of the multiple downlink physical shared channels PDSCH are configured as different uplink resources, that is, when the feedback information is not multiplexed. The terminal may also send the feedback information of the DCI at a feedback information sending position (feedback information bit) corresponding to the DCI where the minimum scheduling delay K0min is indicated to change for the first time. Correspondingly, the base station may receive the feedback information of the DCI at the feedback information transmission position (feedback information bit) corresponding to the DCI indicating the K0min change for the first time. The first indication of the change of the minimum scheduling delay K0min may be a first indication that the minimum scheduling delay K0min becomes smaller, a first indication that the minimum scheduling delay K0min becomes larger, or a first indication that the minimum scheduling delay K0min becomes smaller or larger. As shown in fig. 11, DCI with the first indication that K0min becomes larger may be fed back, for example, K0min indicated by time slot m is 1, and K0min indicated by time slot m +1 is 2, which is the first indication that K0min is larger, and fed back. At slot m +2, the indicated K0min is 1, but this is not the first time to indicate a smaller K0min, so no feedback is given. In another embodiment of the present disclosure, DCI that the first indication K0min becomes smaller may also be fed back, for example, in fig. 11, K0min indicated by time slot m +3 is 2, and K0min indicated by time slot m +4 is 0, which indicates that smaller K0min is indicated for the first time, so that feedback is performed. At slot m +5, the indicated K0min is 0, but this is not the first time to indicate a smaller K0min, so no feedback is given. Of course, in other embodiments of the present disclosure, the terminal may also feed back DCI indicating that K0min changes for the first time (whether to become larger or smaller). Correspondingly, the base station receives the feedback information of the DCI at a feedback information sending position (feedback information bit) corresponding to the DCI.

Based on the methods provided by the embodiments corresponding to fig. 1 to fig. 11, the present disclosure also provides a downlink control information feedback device. Fig. 12 is a schematic block structure diagram of a downlink control information feedback apparatus according to an embodiment of the present disclosure. Specifically, as shown in fig. 12, a downlink control information feedback device 31 applied to the base station side may include:

a configuring unit 311, which may be configured to configure feedback information bits, where the feedback information bits are used for transmitting feedback information of downlink control information;

the receiving unit 312 may be configured to receive the feedback information of the downlink control information at the feedback information bit.

In an embodiment of the present disclosure, the receiving unit 312 may be further configured to:

and receiving the feedback information of the downlink control information at a feedback information sending position corresponding to the downlink control information which indicates the minimum scheduling time delay change for the first time.

In an embodiment of the present disclosure, the apparatus 31 may further include an indicating unit 313, which may be configured to indicate one or more downlink control information that needs to be fed back; correspondingly, the receiving unit 312 may be further configured to:

In an embodiment of the present disclosure, the joint feedback information is obtained by performing a logical and operation on feedback information of the plurality of downlink control information that needs to be fed back.

On the other hand, as shown in fig. 12, a downlink control information feedback apparatus 32 applied to the terminal side may include:

an obtaining unit 321, configured to obtain feedback information bits configured by a base station, where the feedback information bits are used to carry feedback information of downlink control information;

the transmitting unit 322 may be configured to transmit feedback information of the downlink control information in the feedback information bits.

In an embodiment of the present disclosure, the sending unit 322 may be further configured to:

and sending the feedback information of the downlink control information at a feedback information sending position corresponding to the downlink control information which indicates the minimum scheduling time delay change for the first time.

and sending the joint feedback information at the feedback information bit.

In an embodiment of the present disclosure, the generating the joint feedback information of the plurality of downlink control information that needs to be fed back may include:

For the same or similar processes as those in the embodiments shown in fig. 1 to 11 involved in the apparatuses according to the embodiments, specific execution manners may be executed according to the execution manners provided by the embodiments corresponding to fig. 1 to 11.

Fig. 13 is a block diagram illustrating a terminal 800 according to an example embodiment. For example, the terminal 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 13, terminal 800 may include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, and communication component 816.

The processing component 802 generally controls overall operation of the terminal 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate 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 at the terminal 800. Examples of such data include instructions for any application or method operating on terminal 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

Power components 806 provide power to the various components of terminal 800. Power components 806 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for terminal 800.

The multimedia component 808 includes a screen providing an output interface between the terminal 800 and the user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the terminal 800 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

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

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

Sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for terminal 800. For example, sensor assembly 814 can detect an open/closed state of terminal 800, the relative positioning of components, such as a display and keypad of terminal 800, sensor assembly 814 can also detect a change in position of terminal 800 or a component of terminal 800, the presence or absence of user contact with terminal 800, orientation or acceleration/deceleration of terminal 800, and a change in temperature of terminal 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

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

In an exemplary embodiment, the terminal 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer-readable storage medium, such as the memory 804, is also provided that includes computer program instructions executable by the processor 820 of the terminal 800 to perform the above-described methods.

Fig. 14 is a block diagram illustrating a base station 1900 according to an example embodiment. For example, base station 1900 can be provided as a server. Referring to fig. 14, the device 1900 includes a processing component 1922 further including one or more processors and memory resources, represented by memory 1932, for storing instructions, e.g., applications, executable by the processing component 1922. The application programs stored in memory 1932 may include one or more modules that each correspond to a set of instructions. Further, the processing component 1922 is configured to execute instructions to perform the above-described method.

The base station 1900 may also include a power component 1926 configured to perform power management of the base station 1900, a wired or wireless network interface 1950 configured to connect the base station 1900 to a network, and an input/output (I/O) interface 1958. The base station 1900 may operate based on an operating system, such as Windows Server, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM, or the like, stored in memory 1932.

In an exemplary embodiment, a non-transitory computer readable storage medium, such as the memory 1932, is also provided that includes computer program instructions executable by the processing component 1922 of the base station 1900 to perform the above-described methods.

The present disclosure may be systems, methods, and/or computer program products. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.

The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.

The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.

The computer program instructions for carrying out operations of the present disclosure may be assembler instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry that can execute the computer-readable program instructions implements aspects of the present disclosure by utilizing the state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).

Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer readable program instructions.

These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.

The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein were chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the techniques in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A downlink control information feedback method is applied to a base station, and the method comprises the following steps:

receiving feedback information of the downlink control information at the feedback information bit;

wherein the feedback information indicates the receiving condition of the downlink control information carried by the downlink control channel.

2. The method as claimed in claim 1, wherein receiving the feedback information of the downlink control information at the feedback information bit comprises:

3. The method as claimed in claim 1, wherein said receiving feedback information of the downlink control information at the feedback information bit comprises:

indicating one or more downlink control information needing to be fed back;

4. The method as claimed in claim 3, wherein said receiving the feedback information of the downlink control information to be fed back at the feedback information bit comprises:

5. The method as claimed in claim 3 or 4, wherein said receiving the feedback information of the downlink control information to be fed back at the feedback information bit further comprises:

6. The method as claimed in claim 5, wherein the joint feedback information is obtained by performing a logical and operation on the feedback information of the downlink control information that needs to be fed back.

7. The method as claimed in claim 1 or 3, wherein said receiving feedback information of said downlink control information at said feedback information bit comprises:

8. The method as claimed in claim 7, wherein said receiving feedback information of said downlink control information at said feedback information bit further comprises:

and receiving feedback information of the downlink control information which reaches the terminal at the latest in the downlink control information associated with the physical downlink shared channel for the terminal to feed back the acknowledgement at the feedback information bit.

9. A downlink control information feedback method is applied to a terminal, and the method comprises the following steps:

sending feedback information of downlink control information at the feedback information bit;

10. The method as claimed in claim 9, wherein said sending feedback information of downlink control information in said feedback information bits comprises:

and sending the feedback information of the downlink control information at a feedback information bit corresponding to the downlink control information which indicates the minimum scheduling time delay change for the first time.

11. The method as claimed in claim 9, wherein said sending feedback information of downlink control information in configured feedback information bits comprises:

12. The method as claimed in claim 11, wherein said sending, at the feedback information bit, feedback information of one or more downlink control information to be fed back, which is indicated by the base station, comprises:

13. The method as claimed in claim 11, wherein said sending, at the feedback information bit, the feedback information of one or more downlink control information that needs to be fed back and is indicated by the base station, further comprises:

and sending the joint feedback information at the feedback information bit.

14. The method of claim 13, wherein the generating the joint feedback information of the downlink control information that needs to be fed back includes:

15. The method as claimed in claim 9 or 11, wherein the sending the feedback information of the downlink control information at the configured feedback information bits comprises:

16. The method of claim 15, wherein the sending the feedback information of the downlink control information at the configured feedback information bits further comprises:

17. A downlink control information feedback apparatus, applied to a base station, the apparatus comprising:

a receiving unit configured to receive feedback information of the downlink control information at the feedback information bit;

18. The downlink control information feedback device according to claim 17, wherein said receiving unit is further configured to:

19. The apparatus of claim 17, further comprising an indication unit configured to indicate one or more downlink control information needing to be fed back; the receiving unit is further configured to:

20. The downlink control information feedback device according to claim 19, wherein said receiving unit is further configured to:

21. The apparatus as claimed in claim 19 or 20, wherein the receiving unit is further configured to:

22. The apparatus as claimed in claim 21, wherein the joint feedback information is obtained by performing a logical and operation on the feedback information of the plurality of pieces of downlink control information that need to be fed back.

23. The apparatus as claimed in claim 17 or 19, wherein the receiving unit is further configured to:

24. The downlink control information feedback device according to claim 23, wherein said receiving unit is further configured to:

25. A downlink control information feedback device, applied to a terminal, the device comprising:

a sending unit configured to send feedback information of downlink control information at the feedback information bit;

26. The downlink control information feedback device of claim 25, wherein the sending unit is further configured to:

27. The downlink control information feedback device of claim 25, wherein the sending unit is further configured to:

28. The downlink control information feedback device of claim 27, wherein the sending unit is further configured to:

29. The apparatus for feeding back downlink control information of claim 27, wherein the sending unit is further configured to:

and sending the joint feedback information at the feedback information bit.

30. The apparatus for feeding back downlink control information according to claim 29, wherein the generating of the joint feedback information of the downlink control information that needs to be fed back includes:

31. The apparatus of claim 25 or 27, wherein the sending unit is further configured to:

32. The downlink control information feedback device of claim 31, wherein the sending unit is further configured to:

33. A base station, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to carry out the method of any one of claims 1 to 8 when executing the executable instructions.

34. A terminal, comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to carry out the executable instructions when implementing the method of any one of claims 9 to 16.

35. A non-transitory computer readable storage medium having stored thereon computer program instructions, wherein the computer program instructions, when executed by a processor, implement the method of any one of claims 1 to 8, 9 to 16.