WO2017133364A1 - Uplink control information transmitting method, receiving method, terminal and network side device - Google Patents

Abstract

Provided are an uplink control information transmitting method and receiving method, a terminal and a network side device. By carrying, in uplink control information, reception indication information about a downlink TTI and corresponding downlink process indication information, a base station can determine a corresponding downlink TTI according to the uplink control information.

Description

Method for transmitting uplink control information, receiving method, terminal, and network side device

Cross-reference to related applications

Priority is claimed on Chinese Patent Application No. 201610077030.1, filed on Jan. 3,,,,,,,,,,

Technical field

The present disclosure relates to the field of mobile communications technologies, and in particular, to a method, a receiving method, a terminal, and a network side device for transmitting uplink control information.

Background technique

In the related art, a hybrid automatic repeat reQuest (HARQ) of a physical downlink shared channel (PDSCH) in a Long Term Evolution (LTE) system defines the following sequence:

1) In the LTE FDD (Frequency Division Duplex) system, the user equipment (UE, User Equipment) receives the downlink data in the subframe n-4, and feeds back the downlink subframe in the uplink subframe n. Whether the data requires retransmission signaling (ie ACK/NACK).

2) In the LTE TDD (Time Division Duplex) system, the UE may feed back acknowledgment (ACK)/negative acknowledgment (NACK) information corresponding to multiple downlink subframes in the same uplink subframe, that is, the UE is in the downlink. The PDCCH in the subframe nk that detects the PDSCH transmission or indicates the downlink semi-persistent scheduling release, and feeds back the corresponding ACK/NACK information in the uplink subframe n, where k ∈ K, the value of the set K and the uplink and downlink configuration of the system and the specific The subframe number is related, as shown in Table 1 below. In particular, for special subframes, when the normal cyclic prefix (CP, Cyclic Prefix) special subframe configuration 0 and 5 and the extended CP special subframe configuration 0 and 4 are used, the special subframe has no ACK/NACK feedback, ie, UE. The ACK/NACK is not fed back to the special subframe.

Table 1 TDD downlink correlation K value: K: {k ₀ , k ₁ , ... k _M-1 }

In order to support the deployment of the LTE system on the unlicensed spectrum resources, the related art defines a way of Licensed Assisted Access (LAA). That is, when an unlicensed carrier is used, the user must first access an authorized primary carrier, and the unlicensed carrier can only serve as a secondary carrier.

The unlicensed spectrum does not have a specific application system, and can be shared by various wireless communication systems such as Bluetooth, WiFi, etc., and the shared unlicensed spectrum resources are used by multiple systems by preempting resources. In order to ensure the transmission performance of LTE users and to better use unlicensed frequency bands, in the unlicensed frequency band, a pre-session detection (LBT) mechanism is required before transmission. The LBT process is a channel clearing assessment (CCA) performed by the device before using the channel for transmission. It is determined by energy detection whether other signals exist on the channel to determine whether the channel is occupied or idle. Data transfer is free for idle. European and Japanese regulations must use LBT on unlicensed bands. In addition to the rules, carrier sensing using LBT is also a way of fair sharing on unlicensed bands, so LBT is a necessary feature for a globally unified solution on unlicensed bands.

When the LTE system works on the carrier of the unlicensed band, the LTE base station must adopt the LBT mechanism in order to ensure fair sharing of spectrum resources with other devices or systems. For the terminal side, since the uplink transmission is performed by the base station scheduling, and the uplink scheduling signaling needs to be transmitted at least four subframes before the data transmission, the base station cannot judge whether the terminal side channel is occupied when scheduling the terminal, and some areas also stipulate each. The site must perform LBT before transmission, which is also beneficial to eliminate some hidden nodes and improve coexistence performance. Therefore, the base station and the terminal of the LAA need to use the LBT mechanism to compete for resources in the unlicensed frequency band.

With the development of mobile communication business needs, ITU and other organizations for the future mobile communication system The system defines higher user plane delay performance requirements. One of the main methods for shortening the user's delay performance is to reduce the length of the transmission time interval (TTI). In order to better adapt to different service transmission requirements, TTIs of different lengths may be flexibly configured to be uplink or downlink. On the other hand, the LTE system will also support deployment of transmissions on unlicensed spectrum resources to improve user experience and extend coverage. On an unlicensed band, there is no guarantee that the user can preempt the channel at any time.

Therefore, in the above two scenarios, there may not be a fixed correspondence between the uplink control information and the corresponding downlink data transmission, and therefore the PDSCH HARQ timing in the related art may no longer be applicable.

Summary of the invention

The technical problem to be solved by the embodiments of the present disclosure is to provide a method for transmitting uplink control information, a receiving method, a terminal, and a network side device. When there is no fixed correspondence between the uplink control information and the corresponding downlink data transmission, Avoid understanding ambiguity between the base station and the terminal, and improve system transmission performance.

To solve the above technical problem, the method and method for transmitting uplink control information provided by the embodiments of the present disclosure include:

The terminal generates uplink control information according to the received downlink TTI data, where the uplink control information includes the downlink TTI receiving indication information in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is a preset requirement. Feeding back a set of downlink TTIs of the uplink control information in the same uplink TTI;

Sending the uplink control information to the network side device.

Optionally, in the above method,

When the terminal receives the downlink TTI data from two or more carriers, the uplink control information further includes a carrier number corresponding to the downlink TTI.

Optionally, in the above method,

The receiving indication information of the downlink TTI is ACK information for indicating a downlink TTI that is successfully received in the feedback window, or NACK information for indicating a downlink TTI that fails to be received in the feedback window.

Optionally, in the above method,

The downlink process indication information corresponding to the downlink TTI is a downlink process number corresponding to the downlink TTI, or is a window number of the feedback window.

Optionally, in the foregoing method, when generating the uplink control information, the terminal further determines a window number of the feedback window according to the following manner:

Determining a window number of the feedback window according to a predefined manner;

or,

Parsing the downlink scheduling signaling in the feedback window, and acquiring a window number of the feedback window carried in the downlink scheduling signaling;

or,

The uplink scheduling signaling in the feedback window is parsed, and the window number of the feedback window carried in the uplink scheduling signaling is obtained.

Optionally, in the foregoing method, when the uplink control information is sent by using an unlicensed carrier, the sending, by the network side device, the uplink control information includes:

Determining, by the unlicensed carrier, a first uplink TTI for transmitting the uplink control information;

Before the first uplink TTI arrives, determining whether the terminal has occupied a channel on the second uplink TTI, where the second uplink TTI is a previous uplink TTI of the first uplink TTI;

If yes, sending the uplink control information by using the first uplink TTI;

Otherwise, LBT detection is performed on the unlicensed carrier before the first uplink TTI arrives.

Optionally, in the above method,

Performing LBT detection on the unlicensed carrier before the first uplink TTI arrives, including:

If the LBT detection fails, the LBT detection is continued in the next uplink TTI until the LBT detection is successful, or the preset LBT detection duration is reached;

If the LBT detection is successful before the LBT detection time is reached, the uplink control information is transmitted in the uplink TTI in which the LBT detection succeeds.

Optionally, in the foregoing method, the transmitting the uplink control information in the uplink TTI that is successfully detected by the LBT includes:

If the uplink control information of the multiple feedback windows needs to be transmitted in the uplink TTI in which the LBT detection succeeds, the multiple feedback windows are simultaneously transmitted in the uplink TTI in which the LBT detection succeeds. Uplink control information, or, according to the chronological order of receiving the feedback window, starting from the uplink TTI where the LBT detects a success, respectively transmitting uplink control information of one feedback window in each uplink TTI.

The embodiment of the present disclosure further provides a method for receiving uplink control information, including:

Receiving the uplink control information sent by the terminal, where the uplink control information includes the downlink TTI receiving indication information in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is preset and needs to be fed back in the same uplink TTI. a set of downlink TTIs of the uplink control information;

Determining, by the terminal, the reception status of the downlink TTI according to the uplink control information.

Optionally, in the above method,

The receiving indication information of the downlink TTI is ACK information for indicating a downlink TTI that is successfully received in the feedback window, or NACK information for indicating a downlink TTI that fails to be received in the feedback window.

Optionally, in the above method,

The downlink process indication information corresponding to the downlink TTI is a downlink process number corresponding to the downlink TTI, or is a window number of the feedback window.

Optionally, in the foregoing method, the determining, according to the uplink control information, the receiving, by the terminal, the downlink TTI, includes:

When the downlink process indication information corresponding to the downlink TTI is the downlink process ID corresponding to the downlink TTI, determining a corresponding downlink TTI according to the downlink process number corresponding to the downlink TTI, and further determining, according to the receiving indication information, Whether the downlink TTI is successfully received;

When the downlink process indication information corresponding to the downlink TTI is the window number of the feedback window, determining, according to the window number of the feedback window, a set of downlink TTIs in the feedback window, and further, according to the receiving indication information, Corresponding to the value of the bit of each downlink TTI, it is determined whether each downlink TTI in the feedback window is successfully received.

Optionally, in the above method,

When the terminal receives the data of the downlink TTI from the two or more carriers, the uplink control information further includes a carrier number corresponding to the downlink TTI; and determining, according to the uplink control information, the terminal The downlink TTI reception status also includes:

Determining, according to the carrier number in the uplink control information, a carrier to which the downlink TTI belongs.

Optionally, in the above method,

Before receiving the uplink control information sent by the terminal, the method further includes:

Transmitting, by using the feedback window, downlink scheduling signaling for scheduling downlink data transmission, and sending a window number of the feedback window to the terminal;

or,

Sending, by the feedback window, the uplink scheduling signaling that triggers the terminal to perform uplink control information feedback, and sends the window number of the feedback window to the terminal.

Optionally, in the foregoing method, when the uplink control information is sent by using an unlicensed carrier, the uplink control information sent by the receiving terminal includes:

Determining, by the terminal, a first uplink TTI for transmitting uplink control information;

Performing a discontinuous transmission (DTX) detection of a Physical Uplink Control Channel (PUCCH) on the unlicensed carrier from the first uplink TTI, and continuing the downlink if the DTX detection fails. An uplink TTI is detected until the detection is successful, or until a preset DTX detection duration is reached;

If the DTX detection is successful before the DTX detection time is reached, the uplink TTI is successfully received in the uplink TTI of the DXT detection.

The embodiment of the present disclosure further provides a terminal, including:

And a generating unit, configured to generate uplink control information according to the received data of the downlink TTI, where the uplink control information includes the receiving indication information of the downlink TTI in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is Presetting a set of downlink TTIs that need to feed back the uplink control information in the same uplink TTI;

And a sending unit, configured to send the uplink control information to the network side device.

Optionally, in the above terminal,

When the generating unit receives the data of the downlink TTI from two or more carriers, the uplink control information further includes a carrier number corresponding to the downlink TTI.

Optionally, in the above terminal,

The receiving indication information of the downlink TTI is ACK information for indicating a downlink TTI that is successfully received in the feedback window, or NACK information for indicating a downlink TTI that fails to be received in the feedback window.

Optionally, in the above terminal,

The downlink process indication information corresponding to the downlink TTI is a downlink process number corresponding to the downlink TTI, or is a window number of the feedback window.

Optionally, in the foregoing terminal, when generating the uplink control information, the generating unit further determines a window number of the feedback window according to the following manner:

Determining a window number of the feedback window according to a predefined manner;

or,

Parsing the downlink scheduling signaling in the feedback window, and acquiring a window number of the feedback window carried in the downlink scheduling signaling;

or,

The uplink scheduling signaling in the feedback window is parsed, and the window number of the feedback window carried in the uplink scheduling signaling is obtained.

Optionally, in the foregoing terminal, when the uplink control information is sent by using an unlicensed carrier, the sending unit includes:

a determining unit, configured to determine a first uplink TTI for sending the uplink control information on the unlicensed carrier;

a determining unit, configured to determine, before the first uplink TTI arrives, whether the terminal has occupied a channel on the second uplink TTI, where the second uplink TTI is a previous uplink TTI of the first uplink TTI;

a first processing unit, configured to send the uplink control information by using the first uplink TTI when the terminal has occupied a channel on the second uplink TTI;

And a second processing unit, configured to perform LBT detection on the unlicensed carrier before the first uplink TTI arrives when the terminal does not occupy a channel on the second uplink TTI.

Optionally, in the foregoing terminal, the second processing unit includes:

a detecting unit, configured to perform LBT detection on the unlicensed carrier before the first uplink TTI arrives, and continue to perform LBT detection on the next uplink TTI when the LBT detection fails, until the LBT detection succeeds, or reaches a preset The length of LBT detection is up to;

And a transmitting unit, configured to: when the detecting unit succeeds in detecting the LBT before the LBT detection is successful, transmitting the uplink control information in an uplink TTI in which the LBT detection succeeds.

Optionally, in the foregoing terminal, the transmission unit is specifically configured to:

If the uplink control information of the multiple feedback windows needs to be transmitted in the uplink TTI that is successfully detected by the LBT, the uplink control information of the multiple feedback windows is simultaneously transmitted in the uplink TTI that is successfully detected by the LBT, or according to the receiving The time sequence of the feedback window starts from the uplink TTI where the LBT detects success, and transmits uplink control information of one feedback window in each uplink TTI.

The embodiment of the present disclosure further provides another terminal, including:

a processor; and a memory coupled to the processor via a bus interface; the memory for storing programs and data used by the processor when performing an operation, when the processor calls and executes the memory When storing programs and data, implement the following functional modules:

And a generating unit, configured to generate uplink control information according to the received data of the downlink TTI, where the uplink control information includes the receiving indication information of the downlink TTI in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is Presetting a set of downlink TTIs that need to feed back the uplink control information in the same uplink TTI;

And a sending unit, configured to send the uplink control information to the network side device.

The embodiment of the present disclosure further provides a network side device, including:

The receiving unit is configured to receive the uplink control information sent by the terminal, where the uplink control information includes the receiving indication information of the downlink TTI in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is preset a set of downlink TTIs that feed back the uplink control information in an uplink TTI;

The first determining unit is configured to determine, according to the uplink control information, a receiving situation of the downlink TTI by the terminal.

Optionally, in the network side device,

The receiving indication information of the downlink TTI is ACK information for indicating a downlink TTI that is successfully received in the feedback window, or NACK information for indicating a downlink TTI that fails to be received in the feedback window.

Optionally, in the network side device,

The downlink process indication information corresponding to the downlink TTI is a downlink process number corresponding to the downlink TTI, or is a window number of the feedback window.

Optionally, in the foregoing network side device, the first determining unit includes:

The first parsing unit is configured to determine, according to the downlink process ID corresponding to the downlink TTI, the downlink TTI corresponding to the downlink TTI, and the corresponding downlink TTI, and further Receiving indication information, determining whether the downlink TTI is successfully received;

a second parsing unit, configured to determine, according to a window number of the feedback window, a set of downlink TTIs in the feedback window, when the downlink process indication information corresponding to the downlink TTI is a window number of the feedback window, and further Determining, according to the value of the bit corresponding to each downlink TTI in the receiving indication information, whether each downlink TTI in the feedback window is successfully received.

Optionally, in the network side device,

When the terminal receives the downlink TTI data from the two or more carriers, the uplink control information further includes a carrier number corresponding to the downlink TTI; the first determining unit further includes:

The third parsing unit is configured to determine, according to the carrier number in the uplink control information, a carrier to which the downlink TTI belongs.

Optionally, the network side device further includes:

a sending unit, configured to send a downlink scheduling signaling for scheduling downlink data transmission in the feedback window, and send a window number of the feedback window to the terminal; or trigger the terminal by transmitting in the feedback window And performing uplink scheduling signaling for uplink control information feedback, and sending a window number of the feedback window to the terminal.

Optionally, in the network side device, the receiving unit includes:

a second determining unit, configured to determine, when the uplink control information is sent by using an unlicensed carrier, a first uplink TTI in which the terminal transmits the uplink control information;

a detecting unit, configured to perform DTX detection of the PUCCH on the unlicensed carrier starting from the first uplink TTI, and if the DTX detection fails, continue to perform detection in the next uplink TTI until the detection succeeds, or reaches a preset The DTX detection duration is long; wherein, if the DTX detection is successful before the DTX detection time is reached, the uplink TTI is successfully received in the uplink TTI that is successfully detected by the DXT.

The embodiment of the present disclosure further provides another network side device, including:

a processor; and a memory connected to the processor through a bus interface; the memory is configured to store programs and data used by the processor when performing operations, when the processor calls and When executing the programs and data stored in the memory, the following functional modules are implemented:

The receiving unit is configured to receive the uplink control information sent by the terminal, where the uplink control information includes the receiving indication information of the downlink TTI in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is preset a set of downlink TTIs that feed back the uplink control information in an uplink TTI;

The first determining unit is configured to determine, according to the uplink control information, a receiving situation of the downlink TTI by the terminal.

Compared with the related art, the method, the receiving method, the terminal, and the network side device of the uplink control information provided by the embodiment of the present disclosure are configured to carry the indication information of the downlink TTI and the corresponding downlink process indication information in the uplink control information. The base station can determine the corresponding downlink TTI according to the uplink control information, thereby avoiding ambiguity between the base station and the terminal, and ensuring the transmission performance of the system.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments described in the present application. Other drawings may also be obtained from those of ordinary skill in the art in light of the inventive work. The following figures are not intended to be scaled to scale in actual dimensions, with emphasis on the subject matter of the present application.

FIG. 1 is a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present disclosure;

2 is a schematic flowchart of a method for receiving uplink control information according to an embodiment of the present disclosure;

Figure 3 is an example of uplink control information transmission in the embodiment of the present disclosure;

4 is an example of uplink control information transmission in the embodiment of the present disclosure; FIG.

Figure 5 is a diagram 3 of an example of uplink control information transmission in an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

FIG. 7 is another schematic structural diagram of a terminal according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a network side device according to an embodiment of the present disclosure;

FIG. 9 is another schematic structural diagram of a network side device according to an embodiment of the present disclosure.

detailed description

The technical solutions in some embodiments of the present disclosure will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all An embodiment. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the inventive scope are the scope of the disclosure.

If there is no fixed correspondence between the uplink control information and the corresponding downlink data transmission, the base station does not know which downlink control information of the downlink subframe is fed back by the terminal, which may cause ambiguity between the base station and the terminal, thereby causing system transmission. Performance is declining. The embodiment of the present disclosure proposes a method for transmitting uplink control information, which can avoid understanding ambiguity between the base station and the terminal, and improve system transmission performance.

Referring to FIG. 1 , a method for transmitting uplink control information provided by an embodiment of the present disclosure is applicable to a terminal device (UE), where the method includes:

Step 11: The terminal generates, according to the received data of the downlink TTI, the uplink control information, where the uplink control information includes the indication information of the downlink TTI in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is A set of downlink TTIs that need to feed back the uplink control information in the same uplink TTI.

Here, the embodiments of the present disclosure support variable length TTIs, which may be flexibly configured as an uplink TTI or a downlink TTI. Of course, a fixed length TTI, such as a 1 ms length, can also be supported in embodiments of the present disclosure. A feedback window may include one or more downlink TTIs, and the downlink TTIs in the same feedback window need to be fed back in the same uplink TTI.

Step 12: Send the uplink control information to the network side device.

Here, the terminal may send the uplink control information to the network side device by using an uplink TTI.

In the embodiment of the present disclosure, the base station can determine the corresponding downlink TTI according to the uplink control information by using the uplink control information to carry the downlink TTI receiving indication information (such as the ACK/NACK feedback information) and the corresponding downlink process indication information. Therefore, the understanding of the ambiguity between the base station and the terminal is avoided, and the transmission performance of the system is ensured.

In the case of multiple carrier aggregation, the feedback window may include a downlink TTI on multiple carriers. When the terminal receives data of the downlink TTI from two or more carriers, the uplink control information is further The carrier number corresponding to the downlink TTI may be included, so that the base station may determine the carrier corresponding to the uplink control information according to the carrier number, and further determine, according to the downlink process indication information corresponding to the downlink TTI, the carrier corresponding to the uplink control information. Downstream TTI.

In the embodiment of the present disclosure, the receiving indication information of the downlink TTI may be ACK information for indicating a downlink TTI that is successfully received in the feedback window, or may be NACK information for indicating a downlink TTI that fails to be received in the feedback window. . That is, the terminal may only feed back the TTI for which the received downlink PDSCH is an ACK, or only the TTI for which the received downlink PDSCH is a NACK. When a plurality of downlink TTIs are included in the feedback window, the ACK information may be an ACK bit sequence, and the NACK information may be a NACK bit sequence. Each downlink TTI corresponds to each bit in the above-described bit sequence, respectively, in accordance with the chronological order of the respective downlink TTIs in the feedback window. For example, when the feedback window has 3 downlink TTIs, and the value 1 of the bit indicates that the reception is successful, the ACK bit sequence 101 indicates that the first and third downlink TTIs in the feedback window are successfully received, and the second downlink TTI reception fails.

In the embodiment of the present disclosure, the downlink process indication information corresponding to the downlink TTI may be directly represented by a downlink process ID corresponding to the downlink TTI. For example, the ACK/NACK information of each downlink TTI corresponds to one PDSCH HARQ process ID, so that After receiving the uplink control information, the network side device (such as the base station) can directly determine the downlink TTI corresponding to the uplink control information according to the downlink process ID.

In the embodiment of the present disclosure, the downlink process indication information corresponding to the downlink TTI may also be represented by a window number of the feedback window. When generating the uplink control information, the terminal may determine the window number of the feedback window in the uplink control information according to any of the following manners:

Method 1: determining a window number of the feedback window according to a predefined manner;

For example, the feedback may be determined according to the downlink process ID corresponding to the downlink TTI in the feedback window, and the size of the predefined feedback window (ie, how many downlink TTIs are included in the feedback window) and the maximum number of downlink processes that the base station can use. The window number of the window. For example, when the maximum PDSCH HARQ process is used in the system, if the corresponding PDSCH HARQ process in the feedback window is 1 to 4, the feedback window number is 1; if the corresponding PDSCH HARQ process in the feedback window is 5-8 , the feedback window number is 2.

Manner 2: parsing downlink scheduling signaling in the feedback window, and acquiring the downlink scheduling signaling The window number of the feedback window carried in;

Here, the terminal may obtain the window number by scheduling downlink scheduling signaling of the downlink data transmission in the feedback window. For example, when there are n feedback windows at the same time, the network side device can be added in the downlink scheduling signaling.

Bit, used to indicate the feedback window number.

Manner 3: Analyze the uplink scheduling signaling in the feedback window, and obtain the window number of the feedback window carried in the uplink scheduling signaling.

Here, the terminal may obtain the window number by using the uplink scheduling signaling in the feedback window, where the uplink scheduling signaling is signaling for triggering the terminal to perform uplink control information feedback, which may be common signaling shared by multiple users, or traditional Uplink scheduling signaling. For example, when there are n feedback windows at the same time, the network side device can increase the uplink scheduling signaling.

Bit, used to indicate the feedback window number.

When the downlink process indication information corresponding to the downlink TTI is represented by the window number of the feedback window, after receiving the uplink control information, the base station may first determine, according to the window number, the downlink TTI in the feedback window corresponding to the window number. And determining, according to the value of the ACK/NACK bit sequence in the receiving indication information, whether each downlink TTI in the feedback window is successfully received.

The foregoing method in the embodiment of the present disclosure may be applied to the LAA scenario, that is, when the terminal may send the uplink control information by using an unlicensed carrier, the foregoing step 12 may specifically include:

Step 12a: Determine a first uplink TTI that is scheduled to be used to send the uplink control information on the unlicensed carrier. Here, the terminal may determine, according to a predefined manner or according to a base station indication, a first uplink TTI that needs to transmit uplink control information. ;

Step 12b: Before the first uplink TTI arrives, determine whether the terminal has occupied a channel on the second uplink TTI, where the second uplink TTI is the previous uplink TTI of the first uplink TTI:

If yes, sending the uplink control information by using the first uplink TTI;

Otherwise, LBT detection is performed on the unlicensed carrier before the first uplink TTI arrives.

If the LBT detection is performed on the unlicensed carrier before the first uplink TTI arrives, if the LBT detection fails, the LBT detection is continued in the next uplink TTI until the LBT detection is successful, or the preset LBT detection duration is reached. . If the LBT detection is successful before the LBT detection time is reached, the terminal transmits the uplink TTI in the uplink TTI with successful LBT detection. Line control information.

Here, the terminal transmits the uplink control information in an uplink TTI that is successfully detected by the LBT, and specifically, if the uplink control information of the multiple feedback windows needs to be transmitted in the uplink TTI in which the LBT detection succeeds, The LBT detects that the uplink control information of the multiple feedback windows is simultaneously transmitted in the uplink TTI, or, according to the time sequence of receiving the feedback window, starts from the uplink TTI that the LBT detects a successful, and transmits one in each uplink TTI. Uplink control information of the feedback window, that is, uplink control information corresponding to the first received feedback window in the TTI transmission succeeded by the LBT, and uplink control information corresponding to the second received feedback window in the next TTI And so on.

For example, if the base station simultaneously schedules downlink transmissions in the n feedback windows, the terminal may use the continuous n uplink TTIs to transmit uplink control information after the LBT detection succeeds, and the uplink control information in each uplink TTI corresponds to a feedback window. Feedback within.

For another example, if the base station simultaneously schedules downlink transmissions in n feedback windows, but the terminal cannot perform feedback in consecutive n uplink TTIs due to processing delay, the terminal transmits the first feedback window after the LBT detection succeeds. Uplink control information; if the terminal has data scheduled before the uplink control information of the next feedback window is transmitted (that is, the terminal always occupies the channel corresponding to the unlicensed carrier), the transmission may be continued, otherwise it needs to be performed before the next transmission. LBT detection, similarly, if the LBT is successful, the transmission is continued, if it fails, the detection is continued in the next TTI, and so on, until the detection is successful, if the failure is detected within the set LBT detection time, the terminal abandons the transmission of the uplink control information. .

The flow of transmitting the uplink control information by the terminal side in the embodiment of the present disclosure is described above. The flow of the network side (base station side) in the embodiment of the present disclosure is similar to that of the terminal side. After receiving the uplink control information, the eNB needs to determine the ACK/NACK and the corresponding downlink subframe according to the uplink control information. For example, the base station needs to find the corresponding downlink TTI by using the PDSCH HARQ process ID or find the downlink in the corresponding feedback window by using the feedback window number. The TTI sets, and then determines the corresponding downlink TTI according to the ACK/NACK bit order.

Referring to FIG. 2, a method for receiving uplink control information provided by an embodiment of the present disclosure, when applied to a network side device, such as a base station, includes the following steps:

Step 21: Receive uplink control information sent by the terminal, where the uplink control information includes a feedback window. The receiving indication information of the downlink TTI in the port and the downlink process indication information corresponding to the downlink TTI, where the feedback window is a preset set of downlink TTIs that need to feed back the uplink control information in the same uplink TTI;

Step 22: Determine, according to the uplink control information, a situation in which the terminal receives the downlink TTI.

Here, the receiving indication information of the downlink TTI is ACK information for indicating a downlink TTI that is successfully received in the feedback window, or NACK information for indicating a downlink TTI that fails to receive in the feedback window. The downlink process indication information corresponding to the downlink TTI is a downlink process number corresponding to the downlink TTI, or is a window number of the feedback window.

In the embodiment of the present disclosure, in the above step 22:

When the downlink process indication information corresponding to the downlink TTI is the downlink process ID corresponding to the downlink TTI, the downlink TTI corresponding to the downlink TTI may be determined, and the corresponding downlink TTI may be determined according to the receiving indication information. Whether the downlink TTI is successfully received;

When the downlink process indication information corresponding to the downlink TTI is the window number of the feedback window, the set of downlink TTIs in the feedback window may be determined according to the window number of the feedback window, and further, according to the receiving indication information. A value corresponding to a bit of each downlink TTI is determined, and whether each downlink TTI in the feedback window is successfully received is determined.

In the case of multiple carrier aggregation, the terminal receives the data of the downlink TTI from two or more carriers. In this case, the uplink control information further includes a carrier number corresponding to the downlink TTI, where the foregoing step 22 is performed. And determining, according to the carrier number in the uplink control information, a carrier to which the downlink TTI belongs.

In the embodiment of the present disclosure, the base station may notify the terminal of the window number of the feedback window. In this case, before the step 21, the embodiment of the present disclosure may further transmit a downlink scheduling signal for scheduling downlink data transmission through the feedback window. Sending, to the terminal, the window number of the feedback window, or sending, by using the uplink scheduling signaling that triggers the terminal to perform uplink control information feedback, in the feedback window, sending the window number of the feedback window To the terminal.

When the terminal sends the uplink control information by using the unlicensed carrier, the receiving the uplink control information sent by the terminal in the foregoing step 21 may specifically include:

Step 21a, determining, by the terminal, the first uplink TTI for transmitting uplink control information;

Step 21b: Perform DTX detection on the unlicensed carrier from the first uplink TTI, and if the DTX detection fails, continue to perform detection on the next uplink TTI until the detection is successful, or reach a preset DTX detection. The duration is long, wherein if the DTX detection is successful before the DTX detection time is reached, the uplink TTI is successfully received in the uplink TTI that is successfully detected by the DXT.

The flow of transmitting and receiving the uplink control information in the embodiment of the present disclosure has been described above through the flow of the terminal side and the network side device, respectively. To help better understand the above scheme, the above process will be further described below in conjunction with several specific examples.

In one example, the base station transmits on the authorized carrier using a variable length TTI. As shown in FIG. 3, the base station configures the subframe n as three downlink TTIs and one uplink TTI, where orthogonal frequency division multiplexing (OFDM) Orthogonal Frequency Division Multiplexing) The symbols 0 to 2 are the first downlink TTI (TTI 1), corresponding to the PDSCH HARQ process 1; the OFDM symbols 3 to 4 are the second downlink TTI (TTI 2), corresponding to the PDSCH HARQ process 2; OFDM Symbols 11 to 13 are the third downlink TTI (TTI 3) and correspond to the PDSCH HARQ process 3 (TTI 1). The base station schedules the terminal to perform uplink control information feedback on the three downlink TTIs in the subframe n in the last OFDM symbol of the subframe n+1. The feedback mode is described below through several possible receiving situations:

Case 1: Assuming that the terminal correctly receives the downlink data in the three downlink TTIs, the feedback information is not transmitted. The base station does not receive feedback of the uplink control information at a predetermined time (for example, in the last OFDM symbol of the subframe n+1) or within a predefined time length (for example, 3 ms), and considers that the terminal correctly receives the three downlink TTIs. Downstream data.

Case 2: It is assumed that the terminal correctly receives the first downlink TTI and the third downlink TTI, and erroneously receives the second downlink TTI. At this time, the terminal can generate only the second TTI uplink control information, including the NACK information and the corresponding PDSCH HARQ process number 2.

Case 3: Assuming that the base station simultaneously schedules downlink data transmission in the three downlink TTIs on the carrier A and the carrier B, and the terminal incorrectly receives the data in the first downlink TTI on the carrier B, the terminal may only generate the carrier B. In the uplink control information of the first downlink TTI, the feedback information includes NACK information, a corresponding PDSCH HARQ process number 1 and a corresponding carrier B number.

In another example, the base station transmits on an unlicensed carrier, supporting up to eight PDSCH HARQ processes. It is assumed that four PDSCH HARQ processes are scheduled in the current transmission of the base station, and the feedback window The port size is predefined as 1. The time at which the terminal needs to transmit the uplink control information is indicated by the base station. Since the window size is 1, the feedback window number is the same as the PDSCH HARQ process number.

As shown in FIG. 4, the base station indicates that the time at which the terminal needs to transmit the uplink control information in the subframe n is the subframe n+4, and the terminal receives the downlink scheduling signaling and the uplink feedback indication information in the subframe n, and the subframe n+3 For the subframe structure similar to DwPTS, the terminal performs LBT detection before the subframe n+4. If the LBT fails to transmit, the terminal continues to perform LBT detection before the subframe n+5. If the LBT detection still fails, the terminal continues to The LBT detection is performed before the subframe n+6. If the LBT detection is successful, the terminal transmits the indication information of the PDSCH of the subframe n in the subframe n+6, and indicates the corresponding PDSCH HARQ process 1; the subframe n+7 transmits the subframe Receiving indication information of the PDSCH of the frame n+1, and indicating the corresponding PDSCH HARQ process 2; transmitting the indication information of the PDSCH of the subframe n+2 in the subframe n+8, and indicating the corresponding PDSCH HARQ process 3, in the subframe n +9 transmits the reception indication information of the PDSCH of the subframe n+3, and indicates the corresponding PDSCH HARQ process 4. Here, if feedback is required on multiple carriers, the corresponding carrier number may also be indicated in the uplink control information.

Correspondingly, the base station performs DTX detection of the PUCCH starting from the subframe n+4, but no PUCCH is detected in the subframe n+4 and the subframe n+5, and in the subframe n+6DTX, the subframe n is detected. +6 Receives uplink control information. In the uplink control information, the base station can obtain the PDSCH reception indication information and the corresponding PDSCH HARQ process number, and the base station can determine the PDSCH transmission subframe corresponding to the PDSCH reception indication information.

In this example, the set time length of the LBT detection and the DTX detection is 10 ms, which is calculated from the subframe n+4. If the terminal fails to the LBT detection of the subframe n+13, the terminal does not transmit the uplink control information. The base station side performs DTX detection from the subframe n+4. If the DTX detection of the subframe n+13 fails, the base station considers that the terminal does not transmit the uplink control information.

In yet another example, the base station transmits on an unlicensed carrier, supporting up to eight PDSCH HARQ processes. The PDSCH HARQ process is scheduled in the current transmission. The feedback window size, the time at which the terminal needs to transmit the uplink control information, and the feedback window number are all displayed by the base station. The feedback window position is determined according to the time when the base station transmits the uplink feedback and the feedback window size.

As shown in FIG. 5, the terminal receives the PDSCH in the subframe n to the subframe n+3, and the terminal receives an uplink scheduling information in the subframe n+3, instructing the terminal to transmit the uplink control information in the subframe n+7. And indicate that the feedback window size is 4 and the feedback window number is 1. The terminal can still be before the subframe n+7 The PDSCH is received, so the PDSCH is also received in the subframe n+4 to the subframe n+6, and the terminal receives an uplink scheduling information in the subframe n+6, instructing the terminal to transmit the uplink control information in the subframe n+10. And indicate that the feedback window size is 3 and the feedback window number is 2.

Since the terminal already knows that the uplink control information is to be transmitted starting from the subframe n+7, if the uplink control information transmission is not successfully completed within the set time range, the downlink data is no longer received. According to the indication information of the base station, the terminal obtains the position of the feedback window 1 as the subframe n+3 and the previous three subframes for transmitting the uplink scheduling information, and the terminal generates the reception indication information corresponding to the four subframes, from the subframe n+7. The LBT detection is started. It is assumed that until the subframe n+8LBT detection is successful, the terminal transmits the uplink control information in the subframe n+8, corresponding to the PDSCH of the subframe n to the subframe n+3, and indicates the corresponding feedback window number 1.

In addition, the terminal may also obtain the feedback window 2 as the subframe n+6 and the previous two subframes for transmitting the uplink scheduling information, and the terminal generates the feedback information corresponding to the three subframes, and assumes that the terminal is in the subframe n+8. If the LBT is successful, and the terminal still has uplink data scheduled in the subframe 9, the terminal can directly transmit the PDSCH feedback of the subframe n+4 to the subframe n+6 in the subframe n+10, and indicate the corresponding feedback window number. 2. If the terminal does not have uplink data scheduled in subframe 9, it needs to perform LBT detection again before subframe n+10. If the detection fails, the detection continues in the next subframe, and so on, until the detection is successful, or The set LBT detection time fails, and the terminal abandons the transmission of the uplink control information.

In this example, if the terminal does not preempt the channel until the subframe n+11, the uplink control information corresponding to the feedback window 1 and the feedback window 2 may be simultaneously transmitted in the subframe n+11; or, in the subframe n+11 The uplink control information corresponding to the feedback feedback window 1 is transmitted, and the uplink control information corresponding to the feedback window 2 is transmitted in the subframe n+12.

It should be noted that the PUCCH does not necessarily occupy one subframe, and may also occupy only one or several OFDM symbols for transmission. In this case, the transmission rule of the uplink control information and the downlink TTI transmission in the embodiment of the present disclosure. The way is the same.

In addition, in the embodiment of the present disclosure, after the terminal generates the uplink control information, the base station may not know the number of bits included in the uplink control information of the terminal in advance, which may cause difficulty in analyzing the uplink control information. One solution is to pre-define the maximum number of bits for uplink control information transmission. If the bits of the uplink control information of the terminal are insufficient, the placeholder bits are supplemented; another solution is to uplink. The control information is preceded by a fixed format indication information for indicating the number of bits of the uplink control information feedback.

Based on the methods provided by the above embodiments, the embodiments of the present disclosure further provide an apparatus for implementing the above method. Referring to FIG. 6, an embodiment of the present disclosure provides a terminal, including:

The generating unit 61 is configured to generate, according to the data of the received downlink TTI, the uplink control information, where the uplink control information includes the receiving indication information of the downlink TTI in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is Is a preset set of downlink TTIs that need to feed back the uplink control information in the same uplink TTI;

The sending unit 62 is configured to send the uplink control information to the network side device.

Here, when the generating unit receives the data of the downlink TTI from two or more carriers, the uplink control information further includes a carrier number corresponding to the downlink TTI.

Here, the receiving indication information of the downlink TTI is ACK information for indicating a downlink TTI that is successfully received in the feedback window, or NACK information for indicating a downlink TTI that fails to receive in the feedback window.

Here, the downlink process indication information corresponding to the downlink TTI is a downlink process number corresponding to the downlink TTI, or is a window number of the feedback window.

Optionally, when generating the uplink control information, the generating unit 61 further determines a window number of the feedback window according to the following manner:

Determining a window number of the feedback window according to a predefined manner;

or,

Parsing the downlink scheduling signaling in the feedback window, and acquiring a window number of the feedback window carried in the downlink scheduling signaling;

or,

The uplink scheduling signaling in the feedback window is parsed, and the window number of the feedback window carried in the uplink scheduling signaling is obtained.

Optionally, when the uplink control information is sent by using an unlicensed carrier, the sending unit 62 includes:

a determining unit, configured to determine a first uplink TTI for sending the uplink control information on the unlicensed carrier;

a determining unit, configured to determine that the terminal is in the second uplink before the first uplink TTI arrives Whether the channel is occupied on the TTI, and the second uplink TTI is the previous uplink TTI of the first uplink TTI;

a first processing unit, configured to send the uplink control information by using the first uplink TTI when the terminal has occupied a channel on the second uplink TTI;

And a second processing unit, configured to perform LBT detection on the unlicensed carrier before the first uplink TTI arrives when the terminal does not occupy a channel on the second uplink TTI.

Here, the second processing unit includes:

a detecting unit, configured to perform LBT detection on the unlicensed carrier before the first uplink TTI arrives, and continue to perform LBT detection on the next uplink TTI when the LBT detection fails, until the LBT detection succeeds, or reaches a preset The length of LBT detection is up to;

And a transmitting unit, configured to: when the detecting unit succeeds in detecting the LBT before the LBT detection is successful, transmitting the uplink control information in an uplink TTI in which the LBT detection succeeds.

Optionally, the transmission unit is specifically configured to:

If the uplink control information of the multiple feedback windows needs to be transmitted in the uplink TTI that is successfully detected by the LBT, the uplink control information of the multiple feedback windows is simultaneously transmitted in the uplink TTI that is successfully detected by the LBT, or according to the receiving The time sequence of the feedback window starts from the uplink TTI where the LBT detects success, and transmits uplink control information of one feedback window in each uplink TTI.

Referring to FIG. 7, an embodiment of the present disclosure further provides another structure of the terminal, including:

a processor 71; and a memory 73 connected to the processor 71 via a bus interface 72; the memory 73 is configured to store programs and data used by the processor 71 when performing operations, when the processor 71 calls When the program and data stored in the memory 73 are executed, the following functional modules are implemented:

And a generating unit, configured to generate uplink control information according to the received data of the downlink TTI, where the uplink control information includes the receiving indication information of the downlink TTI in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is Presetting a set of downlink TTIs that need to feed back the uplink control information in the same uplink TTI;

And a sending unit, configured to send the uplink control information to the network side device.

Referring to FIG. 8, the network side device provided by the embodiment of the present disclosure includes:

The receiving unit 81 is configured to receive uplink control information sent by the terminal, where the uplink control information packet The receiving indication information of the downlink TTI in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is a preset set of downlink TTIs that need to feed back the uplink control information in the same uplink TTI;

The first determining unit 82 is configured to determine, according to the uplink control information, a situation in which the terminal receives the downlink TTI.

Here, the receiving indication information of the downlink TTI is ACK information for indicating a downlink TTI that is successfully received in the feedback window, or NACK information for indicating a downlink TTI that fails to receive in the feedback window.

Here, the downlink process indication information corresponding to the downlink TTI is a downlink process number corresponding to the downlink TTI, or is a window number of the feedback window.

Optionally, the first determining unit 82 may include:

The first parsing unit is configured to determine, according to the downlink process ID corresponding to the downlink TTI, the downlink TTI corresponding to the downlink TTI, and the corresponding downlink TTI, and further Receiving indication information, determining whether the downlink TTI is successfully received;

a second parsing unit, configured to determine, according to a window number of the feedback window, a set of downlink TTIs in the feedback window, when the downlink process indication information corresponding to the downlink TTI is a window number of the feedback window, and further Determining, according to the value of the bit corresponding to each downlink TTI in the receiving indication information, whether each downlink TTI in the feedback window is successfully received.

Optionally, when the terminal receives the data of the downlink TTI from the two or more carriers, the uplink control information further includes a carrier number corresponding to the downlink TTI; the first determining unit 82 further includes:

The third parsing unit is configured to determine, according to the carrier number in the uplink control information, a carrier to which the downlink TTI belongs.

Optionally, the network side device may further include the following units:

a sending unit, configured to send a downlink scheduling signaling for scheduling downlink data transmission in the feedback window, and send a window number of the feedback window to the terminal; or trigger the terminal by transmitting in the feedback window And performing uplink scheduling signaling for uplink control information feedback, and sending a window number of the feedback window to the terminal.

Optionally, the receiving unit 81 includes:

a second determining unit, configured to determine, when the uplink control information is sent by using an unlicensed carrier, a first uplink TTI in which the terminal transmits the uplink control information;

a detecting unit, configured to perform DTX detection of the PUCCH on the unlicensed carrier starting from the first uplink TTI, and if the DTX detection fails, continue to perform detection in the next uplink TTI until the detection succeeds, or reaches a preset The DTX detection duration is long; wherein, if the DTX detection is successful before the DTX detection time is reached, the uplink TTI is successfully received in the uplink TTI that is successfully detected by the DXT.

Referring to FIG. 9, the embodiment of the present disclosure further provides another structure of the network side device, including:

a processor 93; and a memory 93 connected to the processor 91 via a bus interface 92; the memory 93 is configured to store programs and data used by the processor 91 when performing operations, when the processor 91 calls When the program and data stored in the memory 93 are executed, the following functional modules are implemented:

The receiving unit is configured to receive the uplink control information sent by the terminal, where the uplink control information includes the receiving indication information of the downlink TTI in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is preset a set of downlink TTIs that feed back the uplink control information in an uplink TTI;

The first determining unit is configured to determine, according to the uplink control information, a receiving situation of the downlink TTI by the terminal.

The above is an alternative embodiment of the present disclosure, and it should be noted that those skilled in the art can also make several improvements and refinements without departing from the principles of the present disclosure. Improvements and retouching should also be considered as protection of this disclosure.

Claims (32)

1. A method for transmitting uplink control information includes:

   The terminal generates uplink control information according to the data of the received downlink time interval (TTI), where the uplink control information includes the downlink TTI receiving indication information in the feedback window and the downlink process indication information corresponding to the downlink TTI. The feedback window is a preset set of downlink TTIs that need to feed back the uplink control information in the same uplink TTI;

   Sending the uplink control information to the network side device.
2. The method of claim 1 wherein

   When the terminal receives the downlink TTI data from two or more carriers, the uplink control information further includes a carrier number corresponding to the downlink TTI.
3. The method of claim 1 or 2, wherein

   The receiving indication information of the downlink TTI is acknowledgment (ACK) information for indicating a downlink TTI that is successfully received in the feedback window, or is negative acknowledgment (NACK) information for indicating a downlink TTI that fails to be received in the feedback window.
4. The method of claim 1 or 2, wherein

   The downlink process indication information corresponding to the downlink TTI is a downlink process number corresponding to the downlink TTI, or is a window number of the feedback window.
5. The method according to claim 4, wherein, when generating the uplink control information, the terminal further determines a window number of the feedback window according to the following manner:

   Determining a window number of the feedback window according to a predefined manner;

   or,

   Parsing the downlink scheduling signaling in the feedback window, and acquiring a window number of the feedback window carried in the downlink scheduling signaling;

   or,

   The uplink scheduling signaling in the feedback window is parsed, and the window number of the feedback window carried in the uplink scheduling signaling is obtained.
6. The method of claim 1, wherein the transmitting the uplink control information to the network side device when the uplink control information is sent by the unlicensed carrier comprises:

   Determining, by the unlicensed carrier, a first uplink TTI for transmitting the uplink control information;

   Before the first uplink TTI arrives, determining whether the terminal has occupied a channel on the second uplink TTI, where the second uplink TTI is a previous uplink TTI of the first uplink TTI;

   If yes, sending the uplink control information by using the first uplink TTI;

   Otherwise, pre-session detection (LBT, Listen Before Talk) is performed on the unlicensed carrier before the first uplink TTI arrives.
7. The method of claim 6 wherein

   Performing LBT detection on the unlicensed carrier before the first uplink TTI arrives, including:

   If the LBT detection fails, the LBT detection is continued in the next uplink TTI until the LBT detection is successful, or the preset LBT detection duration is reached;

   If the LBT detection is successful before the LBT detection time is reached, the uplink control information is transmitted in the uplink TTI in which the LBT detection succeeds.
8. The method of claim 7, wherein the transmitting the uplink control information in the uplink TTI in which the LBT detection succeeds comprises:

   If the uplink control information of the multiple feedback windows needs to be transmitted in the uplink TTI that is successfully detected by the LBT, the uplink control information of the multiple feedback windows is simultaneously transmitted in the uplink TTI that is successfully detected by the LBT, or according to the receiving The time sequence of the feedback window starts from the uplink TTI where the LBT detects success, and transmits uplink control information of one feedback window in each uplink TTI.
9. A method for receiving uplink control information includes:

   Receiving the uplink control information sent by the terminal, where the uplink control information includes the downlink TTI receiving indication information in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is preset and needs to be fed back in the same uplink TTI. a set of downlink TTIs of the uplink control information;

   Determining, by the terminal, the reception status of the downlink TTI according to the uplink control information.
10. The method of claim 9 wherein

    The receiving indication information of the downlink TTI is ACK information for indicating a downlink TTI that is successfully received in the feedback window, or NACK information for indicating a downlink TTI that fails to be received in the feedback window.
11. The method of claim 9 wherein

    The downlink process indication information corresponding to the downlink TTI is a downlink process number corresponding to the downlink TTI, or is a window number of the feedback window.
12. The method of claim 9, wherein the determining, by the terminal, the reception status of the downlink TTI according to the uplink control information comprises:

    When the downlink process indication information corresponding to the downlink TTI is the downlink process ID corresponding to the downlink TTI, determining a corresponding downlink TTI according to the downlink process number corresponding to the downlink TTI, and further determining, according to the receiving indication information, Whether the downlink TTI is successfully received;

    When the downlink process indication information corresponding to the downlink TTI is the window number of the feedback window, determining, according to the window number of the feedback window, a set of downlink TTIs in the feedback window, and further, according to the receiving indication information, Corresponding to the value of the bit of each downlink TTI, it is determined whether each downlink TTI in the feedback window is successfully received.
13. The method of claim 12, wherein

    When the terminal receives the data of the downlink TTI from the two or more carriers, the uplink control information further includes a carrier number corresponding to the downlink TTI; and determining, according to the uplink control information, the terminal The downlink TTI reception status also includes:

    Determining, according to the carrier number in the uplink control information, a carrier to which the downlink TTI belongs.
14. The method of claim 9 wherein

    Before receiving the uplink control information sent by the terminal, the method further includes:

    Transmitting, by using the feedback window, downlink scheduling signaling for scheduling downlink data transmission, and sending a window number of the feedback window to the terminal;

    or,

    Sending, by the feedback window, the uplink scheduling signaling that triggers the terminal to perform uplink control information feedback, and sends the window number of the feedback window to the terminal.
15. The method of claim 9, wherein, when the uplink control information is sent by an unlicensed carrier, the uplink control information sent by the receiving terminal includes:

    Determining, by the terminal, a first uplink TTI for transmitting uplink control information;

    Performing a discontinuous transmission (DTX) detection of a Physical Uplink Control Channel (PUCCH) on the unlicensed carrier from the first uplink TTI, and continuing the downlink if the DTX detection fails. One on Perform TTI detection until the detection is successful or until the preset DTX detection time is reached;

    If the DTX detection is successful before the DTX detection time is reached, the uplink TTI is successfully received in the uplink TTI of the DXT detection.
16. A terminal comprising:

    And a generating unit, configured to generate uplink control information according to the received data of the downlink TTI, where the uplink control information includes the receiving indication information of the downlink TTI in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is Presetting a set of downlink TTIs that need to feed back the uplink control information in the same uplink TTI;

    And a sending unit, configured to send the uplink control information to the network side device.
17. The terminal of claim 16 wherein

    When the generating unit receives the data of the downlink TTI from two or more carriers, the uplink control information further includes a carrier number corresponding to the downlink TTI.
18. The terminal according to claim 16 or 17, wherein

    The receiving indication information of the downlink TTI is ACK information for indicating a downlink TTI that is successfully received in the feedback window, or NACK information for indicating a downlink TTI that fails to be received in the feedback window.
19. The terminal according to claim 16 or 17, wherein

    The downlink process indication information corresponding to the downlink TTI is a downlink process number corresponding to the downlink TTI, or is a window number of the feedback window.
20. The terminal according to claim 19, wherein the generating unit, when generating the uplink control information, further determines a window number of the feedback window according to the following manner:

    Determining a window number of the feedback window according to a predefined manner;

    or,

    Parsing the downlink scheduling signaling in the feedback window, and acquiring a window number of the feedback window carried in the downlink scheduling signaling;

    or,

    The uplink scheduling signaling in the feedback window is parsed, and the window number of the feedback window carried in the uplink scheduling signaling is obtained.
21. The terminal of claim 16 wherein said uplink is transmitted over an unlicensed carrier When the information is controlled, the sending unit includes:

    a determining unit, configured to determine a first uplink TTI for sending the uplink control information on the unlicensed carrier;

    a determining unit, configured to determine, before the first uplink TTI arrives, whether the terminal has occupied a channel on the second uplink TTI, where the second uplink TTI is a previous uplink TTI of the first uplink TTI;

    a first processing unit, configured to send the uplink control information by using the first uplink TTI when the terminal has occupied a channel on the second uplink TTI;

    And a second processing unit, configured to perform LBT detection on the unlicensed carrier before the first uplink TTI arrives when the terminal does not occupy a channel on the second uplink TTI.
22. The terminal of claim 21, wherein the second processing unit comprises:

    a detecting unit, configured to perform LBT detection on the unlicensed carrier before the first uplink TTI arrives, and continue to perform LBT detection on the next uplink TTI when the LBT detection fails, until the LBT detection succeeds, or reaches a preset The length of LBT detection is up to;

    And a transmitting unit, configured to: when the detecting unit succeeds in detecting the LBT before the LBT detection is successful, transmitting the uplink control information in an uplink TTI in which the LBT detection succeeds.
23. The terminal according to claim 22, wherein the transmission unit is specifically configured to:

    If the uplink control information of the multiple feedback windows needs to be transmitted in the uplink TTI that is successfully detected by the LBT, the uplink control information of the multiple feedback windows is simultaneously transmitted in the uplink TTI that is successfully detected by the LBT, or according to the receiving The time sequence of the feedback window starts from the uplink TTI where the LBT detects success, and transmits uplink control information of one feedback window in each uplink TTI.
24. A terminal comprising:

    a processor; and a memory coupled to the processor via a bus interface; the memory for storing programs and data used by the processor when performing an operation, when the processor calls and executes the memory When storing programs and data, implement the following functional modules:

    And a generating unit, configured to generate uplink control information according to the received data of the downlink TTI, where the uplink control information includes the receiving indication information of the downlink TTI in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is Presetting a set of downlink TTIs that need to feed back the uplink control information in the same uplink TTI;

    And a sending unit, configured to send the uplink control information to the network side device.
25. A network side device, including:

    The receiving unit is configured to receive the uplink control information sent by the terminal, where the uplink control information includes the receiving indication information of the downlink TTI in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is preset a set of downlink TTIs that feed back the uplink control information in an uplink TTI;

    The first determining unit is configured to determine, according to the uplink control information, a receiving situation of the downlink TTI by the terminal.
26. The network side device according to claim 25, wherein

    The receiving indication information of the downlink TTI is ACK information for indicating a downlink TTI that is successfully received in the feedback window, or NACK information for indicating a downlink TTI that fails to be received in the feedback window.
27. The network side device according to claim 25, wherein

    The downlink process indication information corresponding to the downlink TTI is a downlink process number corresponding to the downlink TTI, or is a window number of the feedback window.
28. The network side device according to claim 25, wherein the first determining unit comprises:

    The first parsing unit is configured to determine, according to the downlink process ID corresponding to the downlink TTI, the downlink TTI corresponding to the downlink TTI, and the corresponding downlink TTI, and further Receiving indication information, determining whether the downlink TTI is successfully received;

    a second parsing unit, configured to determine, according to a window number of the feedback window, a set of downlink TTIs in the feedback window, when the downlink process indication information corresponding to the downlink TTI is a window number of the feedback window, and further Determining, according to the value of the bit corresponding to each downlink TTI in the receiving indication information, whether each downlink TTI in the feedback window is successfully received.
29. The network side device according to claim 28, wherein

    When the terminal receives the downlink TTI data from the two or more carriers, the uplink control information further includes a carrier number corresponding to the downlink TTI; the first determining unit further includes:

    The third parsing unit is configured to determine, according to the carrier number in the uplink control information, a carrier to which the downlink TTI belongs.
30. The network side device of claim 25, further comprising:

    a sending unit, configured to send a downlink scheduling signaling for scheduling downlink data transmission in the feedback window, and send a window number of the feedback window to the terminal; or trigger the terminal by transmitting in the feedback window And performing uplink scheduling signaling for uplink control information feedback, and sending a window number of the feedback window to the terminal.
31. The network side device according to claim 25, wherein the receiving unit comprises:

    a second determining unit, configured to determine, when the uplink control information is sent by using an unlicensed carrier, a first uplink TTI in which the terminal transmits the uplink control information;

    a detecting unit, configured to perform DTX detection of the PUCCH on the unlicensed carrier starting from the first uplink TTI, and if the DTX detection fails, continue to perform detection in the next uplink TTI until the detection succeeds, or reaches a preset The DTX detection duration is long; wherein, if the DTX detection is successful before the DTX detection time is reached, the uplink TTI is successfully received in the uplink TTI that is successfully detected by the DXT.
32. A network side device, including:

    a processor; and a memory coupled to the processor via a bus interface; the memory for storing programs and data used by the processor when performing an operation, when the processor calls and executes the memory When storing programs and data, implement the following functional modules:

    The receiving unit is configured to receive the uplink control information sent by the terminal, where the uplink control information includes the receiving indication information of the downlink TTI in the feedback window and the downlink process indication information corresponding to the downlink TTI, where the feedback window is preset a set of downlink TTIs that feed back the uplink control information in an uplink TTI;

    The first determining unit is configured to determine, according to the uplink control information, a receiving situation of the downlink TTI by the terminal.

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