CN110034862B

CN110034862B - Downlink feedback method, mobile communication terminal and network side equipment

Info

Publication number: CN110034862B
Application number: CN201810031424.2A
Authority: CN
Inventors: 李娜; 沈晓冬; 潘学明
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-01-12
Filing date: 2018-01-12
Publication date: 2021-05-28
Anticipated expiration: 2038-01-12
Also published as: CN110034862A

Abstract

The invention provides a downlink feedback method, a mobile communication terminal and network side equipment. The downlink feedback method applied to the mobile communication terminal comprises the following steps: receiving a Physical Downlink Shared Channel (PDSCH) signal sent by network side equipment on an nth slot; if the downlink control information DCI of the scheduled PDSCH does not comprise a timing indication field, sending a Physical Uplink Control Channel (PUCCH) signal for feeding back the PDSCH signal transmission condition on a t slot; wherein t is an integer greater than or equal to n + k, and n and k are both integers greater than or equal to 0. The method and the device can specify the slot for downlink feedback when the DCI does not contain the timing indication field, and simultaneously save the system overhead.

Description

Downlink feedback method, mobile communication terminal and network side equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a downlink feedback method, a mobile communication terminal, and a network side device.

Background

An NR (New Radio access) system is a system based on HARQ (Hybrid Automatic Repeat Request) technology. In the HARQ technology, a data receiving end sends downlink feedback information ACK/NACK to a data sending end according to whether demodulation is correct or not after receiving data transmission.

Currently, in an NR system, a dynamic timing relationship is adopted between Downlink data transmission and Downlink feedback, that is, the timing relationship between Downlink data transmission and Downlink feedback is not fixed, but a timing indication (PDSCH-to-HARQ-timing indicator) field of a DCI (Downlink Control Information) for scheduling Downlink data transmission, for example, a dl-data-to-UL-ACK field, is used to indicate which slot (slot) of a mobile communication terminal after receiving Downlink data for Downlink feedback. However, in the NR system, the network side device also supports the case where the timing indication field is not carried in the DCI.

However, in the case where the DCI does not include the timing indication field, if the timing relationship between the downlink data transmission and the downlink feedback is not specified, the mobile communication terminal cannot determine which slot after receiving the downlink data is in which downlink feedback is performed. Therefore, it is necessary to propose a solution for the case where the timing indication field is not included in DCI.

Disclosure of Invention

The embodiment of the invention provides a downlink feedback method, a mobile communication terminal and network side equipment, which aim to provide a solution for the condition that DCI does not contain a timing indication field and specify the slot determination for downlink feedback when the DCI does not contain the timing indication field.

In a first aspect, an embodiment of the present invention provides a downlink feedback method, which is applied to a mobile communication terminal, and the method includes:

receiving a Physical Downlink Shared Channel (PDSCH) signal sent by network side equipment on an nth slot;

if the downlink control information DCI of the scheduled PDSCH does not comprise a timing indication field, sending a Physical Uplink Control Channel (PUCCH) signal for feeding back the PDSCH signal transmission condition on a t slot;

wherein t is an integer greater than or equal to n + k, and n and k are both integers greater than or equal to 0.

In a second aspect, an embodiment of the present invention further provides a downlink feedback method, which is applied to a network side device, and the method includes:

sending a Physical Downlink Shared Channel (PDSCH) signal on an nth slot;

receiving a Physical Uplink Control Channel (PUCCH) signal which is sent by a mobile communication terminal and used for feeding back the transmission condition of the PDSCH signal on a t slot;

wherein the t is determined by the network side device when downlink control information DCI for scheduling the PDSCH does not include a timing indication field; and t is an integer which is greater than or equal to n + k, and both n and k are integers which are greater than or equal to 0.

In a third aspect, an embodiment of the present invention provides a mobile communication terminal, including:

a first receiving module, configured to receive, at an nth slot, a PDSCH signal of a physical downlink shared channel sent by a network side device;

a first sending module, configured to send a Physical Uplink Control Channel (PUCCH) signal for feeding back a PDSCH signal transmission condition on a t-th slot if Downlink Control Information (DCI) for scheduling the PDSCH does not include a timing indication field;

In a fourth aspect, an embodiment of the present invention provides a network-side device, where the network-side device includes:

a second sending module, configured to send a PDSCH signal of a physical downlink shared channel on an nth slot;

a second receiving module, configured to receive, at a t slot, a Physical Uplink Control Channel (PUCCH) signal sent by a mobile communication terminal and used for feeding back the PDSCH signal transmission condition;

In a fifth aspect, an embodiment of the present invention provides a communication device, where the communication device includes: a processor, a memory and a computer program stored on the memory and operable on the processor, the computer program, when executed by the processor, implementing the steps of the downlink feedback method applied to a mobile communication terminal; or, the method is applied to the downlink feedback method of the network side equipment.

In a sixth aspect, an embodiment of the present invention provides a computer-readable storage medium of a communication device, where the computer-readable storage medium stores a computer program, and the computer program, when executed by a processor, implements a step of a downlink feedback method applied to a mobile communication terminal; or, the method is applied to the downlink feedback method of the network side equipment.

Thus, in the embodiment of the present invention, even if the DCI does not include the timing indication field, after receiving the PDSCH signal transmitted by the network side device in the nth slot, the mobile communication terminal transmits the PUCCH signal for feeding back the transmission condition of the PUSCH signal in the tth slot, where t is an integer greater than or equal to n + k, and n and k are both integers greater than or equal to 0, so that when the DCI does not include the timing indication field, the slot for downlink feedback can be specified, and at the same time, the system overhead is saved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a flowchart of a downlink feedback method according to an embodiment of the present invention;

fig. 2 is a flowchart of a downlink feedback method according to another embodiment of the present invention;

fig. 3 is a block diagram of a mobile communication terminal according to an embodiment of the present invention;

fig. 4 is a block diagram of a network side device according to an embodiment of the present invention;

fig. 5 is a block diagram of a mobile communication terminal according to still another embodiment of the present invention;

fig. 6 is a block diagram of a network device according to another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the downlink feedback method of fig. 1 is applied to a mobile communication terminal, and as shown in fig. 1, the downlink feedback method of the embodiment includes the following steps:

step 101, receiving a PDSCH signal of a physical downlink shared channel sent by a network side device in an nth slot.

In this embodiment, the network side device may specify, in advance, a time-frequency resource location for sending a PDSCH (Physical Downlink Shared Channel) signal through a PDCCH (Physical Downlink Control Channel), so that the mobile communication terminal may receive the PDSCH signal according to the time-frequency resource location specified in the PDCCH after interpreting the PDCCH. Therefore, it can be understood that the nth slot in this step is pre-specified by the network side device.

The PDSCH signal can be understood as a signal transmitted by the network side device through the PDSCH, such as downlink data; n is an integer greater than or equal to 0.

And 102, if the downlink control information DCI of the scheduled PDSCH does not include a timing indication field, transmitting a Physical Uplink Control Channel (PUCCH) signal for feeding back the PDSCH signal transmission condition on a t slot.

In this embodiment, a DCI (Downlink Control Information) for scheduling a PDSCH does not include a timing indication (PDSCH-to-HARQ-timing indicator) field, such as a dl-data-to-UL-ACK field, where the timing indication field is used to indicate a timing relationship between Downlink data transmission and HARQ-ACK feedback, that is, on which slot after receiving Downlink data, a mobile communication terminal performs Downlink feedback. When the DCI does not include the timing indication field, the mobile communication terminal may determine, according to a preset rule, to send a PUCCH (Physical Uplink Control Channel) signal for feeding back the PDSCH signal transmission condition on t slots.

In this step, the PUCCH signal may be understood as a signal transmitted through the PUCCH, and specifically, the PUCCH signal may be expressed as HARQ ACK (acknowledgement)/NACK (Negative acknowledgement). Wherein t is an integer greater than or equal to n + k, and k is an integer greater than or equal to 0, it being understood that k is an integer.

In this way, even if the DCI does not include the timing indication field, after receiving the PDSCH signal transmitted by the network side device in the nth slot, the mobile communication terminal transmits the PUCCH signal for feeding back the PUSCH signal transmission condition in the tth slot, where t is an integer greater than or equal to n + k, and k is an integer greater than or equal to 0, so that when the DCI does not include the timing indication field, the slot for downlink feedback can be specified, and the system overhead can be saved.

In this embodiment, the k value may be determined in various ways, which are specifically described as follows:

determining the first mode, wherein k is predefined.

In this determination, the system predefines the value of k, for example: the system can directly solidify the k value in the communication protocol of the network side equipment and the mobile communication terminal. Therefore, both the mobile communication terminal and the network side device can directly read the value k from the communication protocol, and further determine the value of t according to the value k, without the network side device sending a signaling for indicating the value k, such as an RRC (Radio Resource Control) signaling, to the mobile communication terminal, thereby saving the signaling overhead of the system.

And determining a second mode, wherein the k is obtained in an implicit mode.

In this determination manner, the system may determine a one-to-one correspondence relationship between numerology (communication parameter) and the k value in advance, and directly solidify the correspondence relationship in a communication protocol between the network side device and the mobile communication terminal, where the numerology includes a subcarrier spacing and a CP (Cyclic prefix) length.

Thus, when the mobile communication terminal acquires numerology, the value k corresponding to the numerology can be read from the communication protocol according to the numerology, and the value t is further determined according to the value k, and the network side equipment is not required to send signaling for indicating the value k to the mobile communication terminal, so that the signaling overhead of the system can be saved.

And determining the mode III, wherein the k is pre-configured by the network side equipment through Radio Resource Control (RRC) signaling.

In this determination method, the network side device determines the k value in advance, and notifies the mobile communication terminal of the predetermined k value through RRC signaling.

Different from the first determination mode and the second determination mode, the determination mode can change the k value through the network side equipment, and further can improve the flexibility of k value configuration.

Of course, the mobile communication terminal may also determine the k value in other manners, which is not limited in this embodiment of the present invention. However, it should be understood that the network side device may also obtain the value of k in the same manner, and further determine the value of t according to the value of k, so that the PUCCH signal transmitted by the mobile communication terminal may be received on the t-th slot after the PDSCH signal is transmitted on the n-th slot.

In this embodiment, the network side device may perform UL-DL (uplink-downlink) configuration on the mobile communication terminal through an SFI (Slot format information), which may be but is not limited to indicating a symbol type in a Slot. The UL-DL configuration includes UL slots/symbols, DL slots/symbols, and unsown slots/symbols, where UL slots/symbols are only used for uplink transmission, DL slots/symbols are only used for downlink transmission, and unsown slots/symbols are flexible slots/symbols that may be used for uplink transmission or downlink transmission or have no transmission.

Further, the SFI includes, but is not limited to, semi-static SFI (semi-static slot format information) and dynamic SFI (dynamic slot format information).

In an NR (New Radio, wireless access) unpaired spectrum or TDD (Time Division duplex) system, a network side device may send a semi-static SFI to a mobile communication terminal through a cell-specific high layer signaling or a UE-specific high layer signaling, so as to perform semi-static UL-DL configuration on the mobile communication terminal; or sending dynamic SFI to the mobile communication terminal through group-common PDCCH (group common physical downlink control channel) to perform dynamic UL-DL configuration on the mobile communication terminal; or, sending semi-static SFI and dynamic SFI to the mobile communication terminal at the same time to carry out UL-DL configuration on the mobile communication terminal. It should be noted that, if the network side device sends the semi-static SFI and the dynamic SFI to the mobile communication terminal at the same time, the dynamic SFI can only modify slots/symbols indicated as Unknown in the semi-static SFI.

The expression of the tth slot for various UL-DL configuration scenarios is described as follows:

in a first scenario, if the DCI does not include a timing indication field, and the mobile communication terminal receives semi-static slot format information SFI used for indicating a symbol type in a slot sent by the network side device, the tth slot is: a first target slot after the m-1 slot indicated by the semi-static SFI, wherein the target slot includes an uplink symbol UL symbol and/or an Unknown symbol Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

It should be understood that, in this scenario, no dynamic SFI is received regardless of whether the mobile communication terminal receives only a semi-static SFI, i.e., a semi-static SFI; or receiving the semi-static SFI and the dynamic SFI, the mobile communication terminal determines that the t slot is the first target slot after the m-1 slot indicated by the semi-static SFI.

Further, if the DCI includes a PUCCH resource indicator (PUCCH resource indicator) indicating a transmission resource of the PUCCH signal, where the transmission resource of the PUCCH signal includes a start symbol and a symbol length symbol duration for transmitting the PUCCH signal, the transmission resource of the PUCCH signal is within the UL symbol and/or the un-transmitted symbol of the target slot.

In this application scenario, it can be known from the above that the target slot satisfies:

a) the target slot is a slot after the m-1 slot indicated by the semi-static SFI;

b) the target slot comprises UL symbol and/or Unknown symbol;

c) and the transmission resource of the PUCCH indicated by the PUCCH resource indication in the DCI falls into the target slot including UL symbol and/or Unknown symbol.

In this way, the mobile communication terminal may transmit the PUCCH signal on the symbol matched with the transmission resource of the PUCCH in the first target slot, that is, the tth slot, so that the determination of the slot for downlink feedback may be specified when the DCI does not include the timing indication field.

In addition, the semi-static SFI is used for indicating the symbol type in the slot, so that the signaling overhead of the system for indicating the SFI can be effectively saved.

For ease of understanding, k is equal to 4 in the following; the initial symbol (number starting from 0) indicating the transmission of the PUCCH signal in DCI is 12, and the symbol length is 2; in the semi-static SFI configuration, the configuration information of the (n + 4) th slot is (DDDDDDDDDDXXXU), the configuration information of the (n + 5) th slot is (uuxddddddddddddddddd), and the configuration information of the (n + 6) th slot is (ddddddddddddddxxuu), for example, different manners of transmission resources of the PUCCH signal in the UL symbol and/or the uknown symbol of the target slot are described.

Wherein U represents UL symbol, D represents DL symbol, and X represents Unknown symbol. In the application scenario, according to the PUCCH resource indication of DCI, it is known that a symbol matched with the transmission resource of the PUCCH in the n +4 th slot is XU, a symbol matched with the transmission resource of the PUCCH in the n +5 th slot is DD, and a symbol matched with the transmission resource of the PUCCH in the n +4 th slot is UU. In a first mode, the transmission resource of the PUCCH signal is within the UL symbol of the target slot.

In this approach, the target slot satisfies:

b) the target slot comprises UL symbol and/or Unknown symbol;

c) and the transmission resource of the PUCCH indicated by the PUCCH resource indication in the DCI falls into the target slot including UL symbol.

In this embodiment, since the transmission resource of the PUCCH signal is within the UL symbol of the target slot, it means that the mobile communication terminal can transmit the PUCCH signal only in the portion indicated as UL symbol by semi-static SFI.

Therefore, the mobile communication terminal cannot transmit the PUCCH signal in the n +4 th slot and the n +5 th slot, and may transmit the PUCCH signal in the n +6 th slot, so that in the application scenario, only the n +6 th slot is the target slot after the n +3 th slot, and it is known that the t-th slot is the n +6 th slot.

In a second mode, the transmission resource of the PUCCH signal is within the UL symbol or the Unknown symbol of the target slot.

In this approach, the target slot satisfies:

b) the target slot comprises UL symbol and/or Unknown symbol;

c) and the transmission resource of the PUCCH indicated by the PUCCH resource indication in the DCI falls into the target slot including UL symbol or Unknown symbol.

In this embodiment, since the transmission resource of the PUCCH signal is in the UL symbol or the un-Unknown symbol of the target slot, it means that the mobile communication terminal may transmit the PUCCH in the portion indicated by the semi static SFI as the UL symbol or the un-Unknown symbol, and therefore the UE may transmit the PUCCH signal in the n +4 slot and the n +6 slot, and in this application scenario, the n +4 slot and the n +6 slot are both the target slots after the n +3 slot. As can be seen from the above, the tth slot is the first target slot after the (n + 3) th slot, and thus the tth slot is the (n + 4) th slot.

Of course, in some embodiments, the PUCCH resource indication may not be included in the DCI. In this application scenario, if the DCI does not include the PUCCH resource indication, the mobile communication terminal may obtain the PUCCH resource indication through another manner, such as RRC signaling, where the PUCCH resource indication is used to indicate a transmission resource of the PUCCH, such as a start symbol and a symbol length symbol of the PUCCH signal. In this way, the mobile communication terminal may transmit a PUCCH signal on the UL symbol or the Unknown symbol of the target slot that matches the transmission resource of the PUCCH, so that the slot for downlink feedback may be determined when the DCI does not include the timing indication field.

In a second scenario, if the DCI does not include the timing indication field, and the mobile communication terminal receives the semi-static SFI and the dynamic SFI sent by the network side device, the t slot is: a first target slot after the m-1 slot indicated by the dynamic SFI, wherein the target slot comprises UL symbol and/or Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

It should be understood that in this scenario, the mobile communication terminal determines that the t-th slot is the first target slot after the m-1 th slot indicated by the dynamic SFI only when the semi-static SFI and the dynamic SFI are received.

Further, if the DCI includes a PUCCH resource indication, where the PUCCH resource indication is used to indicate a transmission resource of the PUCCH signal, and the transmission resource of the PUCCH signal includes a start symbol and a symbol length symbol duration for transmitting the PUCCH signal, the transmission resource of the PUCCH signal is within UL symbol and/or Unknown symbol of the target slot.

a) the target slot is a slot after the (m-1) th slot indicated by the dynamic SFI;

b) the target slot comprises UL symbol and/or Unknown symbol;

In addition, compared with the first scenario, the dynamic SFI is used for indicating the symbol type in the slot, so that the symbol type in the slot can be dynamically indicated in real time, and the flexibility of symbol type configuration in the slot is further improved. For ease of understanding, k is equal to 4 in the following; the initial symbol (number starting from 0) indicating the transmission of the PUCCH signal in DCI is 12, and the symbol length is 2; in the semi-static SFI configuration, the configuration information of the n +4 th slot is (DDDDDDDDDDXXXX), the configuration information of the n +4 th slot is (DDDDDDDDDDXXXU), the configuration information of the n +5 th slot is (ddddddddddddddxxxx), and the configuration information of the n +5 th slot is (DDDDDDDDDDXXUU), for example, in the dynamic SFI configuration, different modes of the transmission resource of the PUCCH signal in the UL symbol and/or the uknown symbol of the target slot are described.

Wherein U represents UL symbol, D represents DL symbol, and X represents Unknown symbol. In this application scenario, according to the PUCCH resource indication of the DCI, it may be known that a symbol matched with the transmission resource of the PUCCH in the n +4 th slot in the semi-static SFI configuration is XX, a symbol matched with the transmission resource of the PUCCH in the n +4 th slot in the dynamic SFI configuration is XU, a symbol matched with the transmission resource of the PUCCH in the n +5 th slot in the semi-static SFI configuration is XX, and a symbol matched with the transmission resource of the PUCCH in the n +5 th slot in the dynamic SFISFI configuration is UU.

In a first mode, the transmission resource of the PUCCH signal is within the UL symbol of the target slot.

In this approach, the target slot satisfies:

b) the target slot comprises UL symbol and/or Unknown symbol;

In this embodiment, since the transmission resource of the PUCCH signal is within the UL symbol of the target slot, it means that the mobile communication terminal can transmit the PUCCH signal only at the portion indicated as UL symbol by dynamic SFI.

Therefore, the mobile communication terminal cannot transmit the PUCCH signal in the n +4 th slot, and may transmit the PUCCH signal in the n +5 th slot, so that in the application scenario, only the n +5 th slot is the target slot after the n +3 th slot, and thus it is known that the t-th slot is the n +5 th slot.

In this approach, the target slot satisfies:

b) the target slot comprises UL symbol and/or Unknown symbol;

In this embodiment, since the transmission resource of the PUCCH signal is in the UL symbol or the Unknown symbol of the target slot, it means that the mobile communication terminal may transmit the PUCCH in the portion indicated by dynamic SFI as UL symbol or Unknown symbol, and therefore the UE may transmit the PUCCH signal in the n +4 slot and the n +5 slot, and in this application scenario, the n +4 slot and the n +5 slot are both the target slot after the n +3 slot. As can be seen from the above, the tth slot is the first target slot after the (n + 3) th slot, and thus the tth slot is the (n + 4) th slot.

Of course, in some embodiments, the PUCCH resource indication may not be included in the DCI. In this application scenario, if the DCI does not include the PUCCH resource indication, the mobile communication terminal may obtain the PUCCH resource indication through other manners, such as RRC signaling, where the PUCCH resource indication is used to indicate a transmission resource of the PUCCH, and for example, a starting symbol and a symbol length symbol for transmitting the PUCCH signal, the mobile communication terminal may transmit the PUCCH signal on a UL symbol or an uknown symbol that is matched with the transmission resource of the PUCCH in the target slot, so that the slot determination for downlink feedback may be specified when the DCI does not include the timing indication field.

And in a third scenario, if the mobile communication terminal does not receive the semi-static SFI sent by the network side device, the t slot is an n + k slot.

In this scenario, the mobile communication terminal clock transmits the PUCCH signal on the n + k slot, regardless of whether the network side device includes a PUCCH resource indication in the DCI.

Further, the scenario may include a first sub-scenario in which the mobile communication terminal does not receive the semi-static SFI but receives the dynamic SFI, and a second sub-scenario in which the mobile communication terminal does not receive the semi-static SFI and the dynamic SFI.

For the first sub-scenario, the mobile communication terminal transmits a PUCCH signal on the (n + k) th slot regardless of whether a PUCCH resource indication included in the DCI conflicts with configuration information of the (n + 4) th slot indicated by the dynamic SFI.

K is equal to 4; the initial symbol (number starting from 0) indicating the transmission of the PUCCH signal in DCI is 12, and the symbol length is 2; for example, when the configuration information of the n +4 slot in the dynamic SFI configuration is (DDDDDDDDDDDDDD), a scenario in which the PUCCH resource indication included in the DCI conflicts with the configuration information of the n +4 slot indicated by the dynamic SFI will be described.

Wherein D represents DL symbol. In this application scenario, according to the PUCCH resource indication of the DCI, it is known that a symbol matched with the transmission resource of the PUCCH in the n +4 th slot is DD.

In this application scenario, even if the PUCCH resource indication included in the DCI conflicts with the configuration information of the (n + 4) th slot indicated by the dynamic SFI, that is, the resource of the PUCCH indicated by the PUCCH resource indication does not fall into the uplink portion of the slot indicated by the dynamic SFI, the mobile communication terminal may still transmit the PUCCH signal in the downlink symbol matched with the transmission resource of the PUCCH.

For the second sub-scenario, since the mobile communication terminal has neither semi-static SFI nor dynamic SFI, the mobile communication terminal may transmit the PUCCH signal directly on the n + k slot.

In this scenario, the mobile communication terminal directly determines that the t slot is the (n + k) slot, so that the determination of the slot for downlink feedback can be specified when the DCI does not include the timing indication field.

In addition, compared with the first scenario and the second scenario, the third scenario can reduce the signaling overhead of the system for configuring the SFI.

In addition, compared with the prior art that a fixed timing relationship is adopted for receiving the PDSCH signal and transmitting the PUCCH signal, that is, after the PDSCH signal transmitted by the network side device is received on the nth slot, the PUCCH signal is transmitted on the n +4 th slot, the k value can be changed, so that the flexibility of the configuration of the t slot can be improved.

It should be noted that, in practical application, the mobile communication terminal may determine the t slot by combining the scenario one and the scenario three; the tth slot may also be determined in combination with the scenario two and the scenario three, but it should be understood that in a scenario in combination with the scenario two and the scenario three, if the mobile communication terminal receives only the semi-static SFI, that is, receives the semi-static SFI, and does not receive the dynamic SFI, the mobile communication terminal may determine the tth slot by an indication of the semi-static SFI, where a specific determination manner is the same as that in the scenario one, and details are not repeated here to avoid repetition.

In the embodiment of the invention, the mobile communication terminal can communicate with the network side equipment through the network. The mobile communication terminal may be a mobile phone, a tablet computer, a laptop computer, a personal digital assistant, a mobile internet device, a wearable device, or the like. The network side device may be an evolved Node B (eNB or eNodeB) or a base station in a 5G network (gNB), which is not limited herein.

Referring to fig. 2, the downlink feedback method in fig. 2 is applied to a network side device, and as shown in fig. 2, the downlink feedback method in this embodiment includes:

step 201, sending a Physical Downlink Shared Channel (PDSCH) signal on an nth slot;

step 202, receiving a Physical Uplink Control Channel (PUCCH) signal which is sent by a mobile communication terminal and used for feeding back the transmission condition of the PDSCH signal on a t slot;

Optionally, if the DCI does not include a timing indication field, and the network side device configures, to the mobile communication terminal, semi-static slot format information SFI for indicating a symbol type in a slot, the tth slot is: a first target slot after the m-1 slot indicated by the semi-static SFI, wherein the target slot includes an uplink symbol UL symbol and/or an Unknown symbol Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

Optionally, if the DCI does not include a timing indication field, and the network side device configures, to the mobile communication terminal, semi-static slot format information SFI and dynamic SFI for indicating a symbol type in a slot, the tth slot is: a first target slot after the m-1 slot indicated by the dynamic SFI, wherein the target slot comprises UL symbol and/or Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

Optionally, the DCI includes a PUCCH resource indication, where the PUCCH resource indication is used to indicate a transmission resource of the PUCCH signal, and the transmission resource of the PUCCH signal includes a start symbol and a symbol length for transmitting the PUCCH signal, and the transmission resource of the PUCCH signal is within UL symbol and/or un-transmitted symbol of the target slot.

Optionally, if the network side device does not send a semi-static SFI to the mobile communication terminal, the t slot is an n + k slot.

Optionally, k is predefined, preset by the network side device, or obtained in an implicit manner.

It should be noted that, the present embodiment is implemented as a network side device corresponding to the foregoing method embodiment, and therefore, reference may be made to the relevant description in the foregoing method embodiment, and the same beneficial effects may be achieved. To avoid repetition of the description, the description is omitted.

Referring to fig. 3, fig. 3 is a structural diagram of a mobile communication terminal according to an embodiment of the present invention, and as shown in fig. 3, the mobile communication terminal 300 includes:

a first receiving module 301, configured to receive, at an nth slot, a PDSCH signal of a physical downlink shared channel sent by a network side device;

a first sending module 302, configured to send a physical uplink control channel PUCCH signal for feeding back a PDSCH signal transmission condition on a t-th slot if downlink control information DCI for scheduling a PDSCH does not include a timing indication field;

Optionally, if the DCI does not include a timing indication field, and the mobile communication terminal receives semi-static slot format information SFI sent by the network side device and used for indicating a symbol type in a slot, the t slot is: a first target slot after the m-1 slot indicated by the semi-static SFI, wherein the target slot includes an uplink symbol UL symbol and/or an Unknown symbol Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

Optionally, if the DCI does not include a timing indication field, and the mobile communication terminal receives semi-static slot format information SFI and dynamic SFI used for indicating a symbol type in a slot sent by the network side device, the tth slot is: a first target slot after the m-1 slot indicated by the dynamic SFI, wherein the target slot comprises UL symbol and/or Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

Optionally, if the mobile communication terminal does not receive the semi-static SFI sent by the network side device, the t slot is an n + k slot.

Optionally, k is predefined, and is preconfigured by the network side device through RRC signaling or obtained in an implicit manner.

The mobile communication terminal 300 can implement each process in the method embodiment corresponding to fig. 1 of the present invention and achieve the same beneficial effects, and for avoiding repetition, the details are not described here.

Referring to fig. 4, fig. 4 is a structural diagram of a network-side device according to an embodiment of the present invention, and as shown in fig. 4, the network-side device 400 includes:

a second sending module 401, configured to send a PDSCH signal of a physical downlink shared channel on an nth slot;

a second receiving module 402, configured to receive, on a t-th slot, a physical uplink control channel PUCCH signal sent by a mobile communication terminal for feeding back a PDSCH signal transmission condition if a downlink control information DCI for scheduling a PDSCH does not include a timing indication field;

Optionally, if the network side device configures semi-static slot format information SFI for indicating symbol types in slots to the mobile communication terminal, the tth slot is: a first target slot after the m-1 slot indicated by the semi-static SFI, wherein the target slot includes an uplink symbol UL symbol and/or an Unknown symbol Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

Optionally, if the network side device configures semi-static slot format information SFI and dynamic SFI for indicating symbol types in slots to the mobile communication terminal, the tth slot is: a first target slot after the m-1 slot indicated by the dynamic SFI, wherein the target slot comprises UL symbol and/or Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

Optionally, the DCI includes a PUCCH resource indication, where the PUCCH resource indication is used to indicate a transmission resource of the PUCCH signal, and the transmission resource of the PUCCH signal includes a start symbol and a symbol length symbol duration for transmitting the PUCCH signal, and the transmission resource of the PUCCH signal is within the UL symbol and/or the un-transmitted symbol of the target slot.

The network side device 400 can implement each process in the method embodiment corresponding to fig. 2 of the present invention, and achieve the same beneficial effects, and is not described herein again to avoid repetition.

In the embodiment of the present invention, the communication device may be represented as a mobile communication terminal or a network side device.

Referring to fig. 5, fig. 5 is a block diagram of a mobile communication terminal according to another embodiment of the present invention, where the mobile communication terminal may be a hardware structure diagram of a mobile communication terminal for implementing various embodiments of the present invention. As shown in fig. 5, the mobile communication terminal 500 includes, but is not limited to: a radio frequency unit 501, a network module 502, an audio output unit 503, an input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, a memory 509, a processor 510, and a power supply 511. Those skilled in the art will appreciate that the mobile communication terminal configuration shown in fig. 5 does not constitute a limitation of the mobile communication terminal, and that the mobile communication terminal may include more or less components than those shown, or combine some components, or a different arrangement of components. In the embodiment of the present invention, the mobile communication terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.

The radio frequency unit 501 is configured to:

Optionally, the processor 510 is configured to: if the DCI does not include a timing indication field and the mobile communication terminal receives semi-static slot format information SFI, which is sent by the network side device and used for indicating a symbol type in a slot, the tth slot is: a first target slot after the m-1 slot indicated by the semi-static SFI, wherein the target slot includes an uplink symbol UL symbol and/or an Unknown symbol Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

It should be noted that, in this embodiment, the mobile communication terminal 500 may implement each process in the method embodiment of the present invention and achieve the same beneficial effects, and for avoiding repetition, details are not described here again.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 501 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, receives downlink data from a base station and then processes the received downlink data to the processor 510; in addition, the uplink data is transmitted to the base station. In general, radio frequency unit 501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 501 can also communicate with a network and other devices through a wireless communication system.

The mobile communication terminal provides the user with wireless broadband internet access through the network module 502, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.

The audio output unit 503 may convert audio data received by the radio frequency unit 501 or the network module 502 or stored in the memory 509 into an audio signal and output as sound. Also, the audio output unit 503 may also provide audio output related to a specific function performed by the mobile communication terminal 500 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 503 includes a speaker, a buzzer, a receiver, and the like.

The input unit 504 is used to receive an audio or video signal. The input Unit 504 may include a Graphics Processing Unit (GPU) 5041 and a microphone 5042, and the Graphics processor 5041 processes image data of a still picture or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 506. The image frames processed by the graphic processor 5041 may be stored in the memory 509 (or other storage medium) or transmitted via the radio frequency unit 501 or the network module 502. The microphone 5042 may receive sounds and may be capable of processing such sounds into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 501 in case of the phone call mode.

The mobile communication terminal 500 further includes at least one sensor 505, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 5061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 5061 and/or a backlight when the mobile communication terminal 500 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the mobile communication terminal (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), and vibration identification related functions (such as pedometer, tapping); the sensors 505 may also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc., which are not described in detail herein.

The display unit 506 is used to display information input by the user or information provided to the user. The Display unit 506 may include a Display panel 5061, and the Display panel 5061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 507 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the mobile communication terminal. Specifically, the user input unit 507 includes a touch panel 5071 and other input devices 5072. Touch panel 5071, also referred to as a touch screen, may collect touch operations by a user on or near it (e.g., operations by a user on or near touch panel 5071 using a finger, stylus, or any suitable object or attachment). The touch panel 5071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 510, and receives and executes commands sent by the processor 510. In addition, the touch panel 5071 may be implemented in various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. In addition to the touch panel 5071, the user input unit 507 may include other input devices 5072. In particular, other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 5071 may be overlaid on the display panel 5061, and when the touch panel 5071 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 510 to determine the type of the touch event, and then the processor 510 provides a corresponding visual output on the display panel 5061 according to the type of the touch event. Although in fig. 5, the touch panel 5071 and the display panel 5061 are two independent components to implement the input and output functions of the mobile communication terminal, in some embodiments, the touch panel 5071 and the display panel 5061 may be integrated to implement the input and output functions of the mobile communication terminal, and is not limited herein.

The interface unit 508 is an interface through which an external device is connected to the mobile communication terminal 500. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 508 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile communication terminal 500 or may be used to transmit data between the mobile communication terminal 500 and the external device.

The memory 509 may be used to store software programs as well as various data. The memory 509 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required by at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, the memory 509 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The processor 510 is a control center of the mobile communication terminal, connects various parts of the entire mobile communication terminal using various interfaces and lines, and performs various functions of the mobile communication terminal and processes data by operating or executing software programs and/or modules stored in the memory 509 and calling data stored in the memory 509, thereby performing overall monitoring of the mobile communication terminal. Processor 510 may include one or more processing units; preferably, the processor 510 may integrate an application processor, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into processor 510.

The mobile communication terminal 500 may further include a power supply 511 (e.g., a battery) for supplying power to various components, and preferably, the power supply 511 may be logically connected to the processor 510 through a power management system, so that functions of managing charging, discharging, and power consumption are implemented through the power management system.

In addition, the mobile communication terminal 500 includes some functional modules that are not shown, and thus, will not be described in detail herein.

Preferably, an embodiment of the present invention further provides a mobile communication terminal, including a processor 510, a memory 509, and a computer program stored in the memory 509 and capable of running on the processor 510, where the computer program, when executed by the processor 510, implements each process of the above-mentioned image processing method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

Referring to fig. 6, fig. 6 is a structural diagram of a network-side device according to another embodiment of the present invention, and as shown in fig. 6, the network-side device 600 includes: a processor 601, a memory 602, a user interface 603, a transceiver 604, and a bus interface.

In this embodiment of the present invention, the network side device 600 further includes: a computer program stored on the memory 602 and executable on the processor 601, the computer program when executed by the processor 601 performing the steps of:

sending a Physical Downlink Shared Channel (PDSCH) signal on an nth slot;

In fig. 6, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 601 and various circuits of memory represented by memory 602 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 604 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 603 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 601 is responsible for managing the bus architecture and general processing, and the memory 602 may store data used by the processor 601 in performing operations.

The network side device 600 can implement each process implemented by the network side device in the above method embodiments, and is not described here again to avoid repetition.

The embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the above-mentioned downlink feedback method embodiment applied to a mobile communication terminal and a network side device, and can achieve the same technical effect, and in order to avoid repetition, the detailed description is omitted here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A downlink feedback method is applied to a mobile communication terminal, and is characterized by comprising the following steps:

2. The downlink feedback method according to claim 1, wherein if the DCI does not include a timing indication field, and the mobile communication terminal receives semi-static slot format information SFI sent by the network side device and used for indicating a symbol type in a slot, the tth slot is: a first target slot after the m-1 slot indicated by the semi-static SFI, wherein the target slot includes an uplink symbol UL symbol and/or an Unknown symbol Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

3. The downlink feedback method according to claim 1, wherein if the DCI does not include a timing indication field and the mobile communication terminal receives a semi-static SFI and a dynamic SFI sent by the network side device, the t slot is: a first target slot after the m-1 slot indicated by the dynamic SFI, wherein the target slot comprises UL symbol and/or Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

4. The downlink feedback method according to claim 2 or 3, wherein the DCI includes a PUCCH resource indication for indicating a transmission resource of the PUCCH signal, the transmission resource of the PUCCH signal includes a starting symbol and a symbol length for transmitting the PUCCH signal, and the transmission resource of the PUCCH signal is within UL symbol and/or Unknown symbol of the target slot.

5. The downlink feedback method according to claim 1, wherein if the mobile communication terminal does not receive the semi-static SFI sent by the network side device, the t slot is an n + k slot.

6. The downlink feedback method according to claim 1, wherein k is predefined, preconfigured by the network side device through Radio Resource Control (RRC) signaling, or obtained in an implicit manner.

7. A downlink feedback method is applied to network side equipment, and is characterized by comprising the following steps:

sending a Physical Downlink Shared Channel (PDSCH) signal on an nth slot;

8. The downlink feedback method according to claim 7, wherein if the DCI does not include a timing indication field, and the network side device configures, to the mobile communication terminal, semi-static slot format information SFI for indicating a symbol type in a slot, the tth slot is: a first target slot after the m-1 slot indicated by the semi-static SFI, wherein the target slot includes an uplink symbol UL symbol and/or an Unknown symbol Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

9. The downlink feedback method according to claim 7, wherein if the DCI does not include the timing indication field and the network side device configures a semi-static SFI and a dynamic SFI for the mobile communication terminal, the t slot is: a first target slot after the m-1 slot indicated by the dynamic SFI, wherein the target slot comprises UL symbol and/or Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

10. The downlink feedback method according to claim 8 or 9, wherein the DCI includes a PUCCH resource indicator, the PUCCH resource indicator is used to indicate a transmission resource of the PUCCH signal, the transmission resource of the PUCCH signal includes a start symbol and a symbol length for transmitting the PUCCH signal, and the transmission resource of the PUCCH signal is within UL symbol and/or Unknown symbol of the target slot.

11. The downlink feedback method according to claim 7, wherein if the network side device does not send a semi-static SFI to the mobile communication terminal, the t slot is an n + k slot.

12. The downlink feedback method according to claim 7, wherein k is predefined, preset by the network side device, or implicitly obtained.

13. A mobile communication terminal, comprising:

14. The mobile communication terminal of claim 13, wherein if the DCI does not include a timing indication field and the mobile communication terminal receives semi-static slot format information SFI sent by the network side device and used for indicating a symbol type in a slot, the tth slot is: a first target slot after the m-1 slot indicated by the semi-static SFI, wherein the target slot includes an uplink symbol UL symbol and/or an Unknown symbol Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

15. The mobile communication terminal of claim 13, wherein if the DCI does not include a timing indication field and the mobile communication terminal receives a semi-static SFI and a dynamic SFI sent by the network side device, the t slot is: a first target slot after the m-1 slot indicated by the dynamic SFI, wherein the target slot comprises UL symbol and/or Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

16. The mobile communication terminal according to claim 14 or 15, wherein the DCI comprises a PUCCH resource indication, wherein the PUCCH resource indication indicates a transmission resource of the PUCCH signal, and wherein the transmission resource of the PUCCH signal comprises a start symbol and a symbol length for transmitting the PUCCH signal, and wherein the transmission resource of the PUCCH signal is within UL symbol and/or under symbol of the target slot.

17. The mobile communication terminal of claim 13, wherein if the mobile communication terminal does not receive the semi-static SFI sent by the network side device, the t slot is an n + k slot.

18. A network-side device, comprising:

19. The network-side device of claim 18, wherein if the DCI does not include a timing indication field and the network-side device configures the mobile communication terminal with semi-static slot format information SFI for indicating a symbol type in a slot, the tth slot is: a first target slot after the m-1 slot indicated by the semi-static SFI, wherein the target slot includes an uplink symbol UL symbol and/or an Unknown symbol Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

20. The network-side device of claim 18, wherein if the DCI does not include a timing indication field and the network-side device configures a semi-static SFI and a dynamic SFI for the mobile communication terminal, the t slot is: a first target slot after the m-1 slot indicated by the dynamic SFI, wherein the target slot comprises UL symbol and/or Unknown symbol, m is an integer greater than or equal to n + k, and t is greater than or equal to m.

21. The network side device according to claim 19 or 20, wherein the DCI comprises a PUCCH resource indication, and the transmission resource of the PUCCH signal comprises a starting symbol and a symbol length for transmitting the PUCCH signal, and the transmission resource of the PUCCH signal is within UL symbol and/or un-transmitted symbol of the target slot.

22. The network-side device of claim 19, wherein the t slot is an n + k slot if the network-side device does not send a semi-static SFI to the mobile communication terminal.

23. A communication device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program when executed by the processor implementing the steps of the downlink feedback method according to any one of claims 1 to 6; or the steps of the downlink feedback method according to any of claims 7 to 12.

24. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the downlink feedback method according to any one of claims 1 to 6; or the steps of the downlink feedback method according to any of claims 7 to 12.