WO2013143381A1

WO2013143381A1 - Uplink scheduling method and device

Info

Publication number: WO2013143381A1
Application number: PCT/CN2013/072254
Authority: WO
Inventors: 徐婧; 林亚男; 潘学明; 沈祖康
Original assignee: 电信科学技术研究院
Priority date: 2012-03-30
Filing date: 2013-03-06
Publication date: 2013-10-03
Also published as: CN103369695B; CN103369695A

Abstract

Disclosed are an uplink scheduling method and device for simultaneously supporting situations where scheduling signaling corresponding to multiple uplink subframes are transmitted in a same downlink subframe and ACK/NACK information corresponding to multiple downlink subframes is transmitted in a same uplink subframe. The uplink scheduling method provided in the present invention comprises: when uplink scheduling needs to be performed, determining downlink control information (DCI) used for uplink scheduling, the DCI at least comprising an uplink index (UL index) domain and a downlink assignment index (DAI) domain, and sending the DCI.

Description

The present invention claims the priority of the Chinese patent application filed on March 30, 2012 by the Chinese Patent Office, the application number is 201210091221.5, and the invention name is "an uplink scheduling method and device", the entire contents thereof This is incorporated herein by reference. Technical field

The present invention relates to the field of communications technologies, and in particular, to an uplink scheduling method and apparatus. Background technique

When the number of uplink and downlink subframes is asymmetric, the scheduling subframe, the transmission subframe, and the feedback subframe cannot form a one-to-one correspondence. For example, when the number of uplink subframes is greater than the number of downlink subframes (including special time slots), scheduling signaling corresponding to multiple uplink subframes needs to be transmitted in the same downlink subframe. In this case, the UL grant (uplink grant) needs to include a UL index field to indicate the number of the corresponding uplink subframe. When the number of uplink subframes is smaller than the number of downlink subframes (including special slots), ACK (acknowledgement)/NACK (non-acknowledgement) information corresponding to multiple downlink subframes are transmitted in the same uplink subframe. In this case, the DA grant needs to include DAI (Downlink).

The Assignment Index field is used to indicate the number of dynamic PDSCHs (Physical Downlink Shared Channels) and the downlink SPS (Sub-Persistent Scheduling) in the current uplink ACK NACK feedback window. Semi-persistent scheduling) The sum of the number of released signalings used to determine whether packets are lost in the uplink ACK NACK feedback window.

Therefore, the UL index is only used to schedule the PUSCH (Physical Uplink Shared Channel) of the TDD (Time Division Duplex) uplink and downlink configuration 0, and is used to indicate the number of the corresponding uplink subframe. The DAI is used to indicate the sum of the number of dynamic PDSCHs that need to be fed back in the current uplink ACK NACK feedback window and the number of downlink SPS release signalings, and is used to determine whether packets are lost in the uplink ACK NACK feedback window.

In the existing TDD system, the UL index field exists only when the uplink and downlink configuration is 0, and the DAI domain exists only when the uplink and downlink configurations are 1-6. Therefore, only one of the domains is always included in the UL grant (DCI 0 and 4) information.

With the development of the technology, especially the following three technologies, the scheduling signaling corresponding to multiple uplink subframes is transmitted in the same downlink subframe and the ACK NACK information corresponding to multiple downlink subframes is in the same uplink. The transmission in the frame may exist at the same time, and the current DCI (downlink control information) design cannot support this situation. First, dynamic TDD.

As one of the two basic duplex systems, the TDD model has received more and more attention in the context of the increasing bandwidth demand for broadband mobile communications. In the TDD system, the uplink and downlink transmissions use the same frequency resources to transmit uplink/downlink signals on different time slots. In common TDD systems, TD-SCDMA (Time Division Synchronized Code Division Multiple Access) systems including 3G (third generation) communication systems and TDs of 4G {fourth generation) communication systems - LTE (Time Division-Long Term Evolvement) system, the division of uplink and downlink time slots is static or semi-static. The usual practice is to determine the uniform uplink and downlink when the network planning process is based on the approximate service ratio. The gap ratio remains unchanged. This is a relatively simple approach in the context of large coverage of macro cells, and is also more effective. With the development of technology, more and more low-power base stations such as Pico cell and Home NodeB are deployed to provide local small coverage. On the one hand, the main service types (for example, data services) of such cells are different from those of macro cells (for example, voice services). Therefore, the matching requirements of uplink and downlink time slots are quite different. On the other hand, the number of users in such a cell is small, and the user service demand changes greatly. Therefore, there is a dynamic change in the uplink and downlink service ratio of the cell. Based on this, more dynamic allocation of uplink and downlink time slot ratios has received more attention and research.

Second, Inter-band (in-band) TDD.

In the LTE-A (LTE Advanced, Advanced Long Term Evolution) system, the peak rate of the system is greatly improved compared to LTE, which requires downlink lGbps and uplink 500 Mbps. If only one carrier with a maximum bandwidth of 20MHz is used, the peak rate requirement cannot be reached. Therefore, the LTE-A system needs to expand the bandwidth that the terminal can use, thereby introducing a CA (Carrier Aggregation) technology, that is, the same eNB.

Multiple consecutive or non-contiguous carriers under (base station) are aggregated while serving the UE to provide the required rate. These aggregated carriers are also called CC (component earner). Each cell can be a member carrier, and cells (member carriers) under different eNBs cannot be aggregated. In order to ensure that the UE of LTE can work under each aggregated carrier, each carrier does not exceed 20 MHz at most. The CA technology of LTE-A is shown in Figure 1. There are four carriers that can be aggregated under the LTE-A base station. The base station can transmit data to the UE on four carriers at the same time to improve system throughput.

In LTE Release 11 (Rel-11) or later systems, in order to avoid interference with other TDD systems, LTE cells located in different Bands may use different TDD uplink/downlink subframe configurations, as shown in Figure 2. , where carrier 1 and carrier 2 are located in Band A, carrier 3 is located in Band B, and cell 1, cell 2, and cell 3 are cells on carrier 1, carrier 2, and carrier 3, respectively. The TDD uplink and downlink configurations of the cell 1 and the cell 2 are the same, both of which are configuration 1. The TDD uplink/downlink subframe configuration of the cell 3 is different from that of the cell 1 and the cell 2, and is configuration 2. If the terminal wants to use the three cells for carrier aggregation, the TDD uplink and downlink configurations of all the aggregated cells of the terminal may be different. Third, FDD (Frequency Division Duplex) and TDD aggregation.

TDD carrier and FDD downlink carrier aggregation may be supported in the LTE subsequent evolution system.

In summary, the DCI in the prior art cannot simultaneously support the scheduling signaling corresponding to multiple uplink subframes in the same downlink subframe and the ACK NACK information corresponding to multiple downlink subframes in the same uplink subframe. Case. Summary of the invention

The embodiment of the present invention provides an uplink scheduling method and device, which are configured to simultaneously support scheduling signaling corresponding to multiple uplink subframes in the same downlink subframe and ACK NACK information corresponding to multiple downlink subframes on the same uplink. The case of transmission in a sub-frame.

An uplink scheduling method provided by an embodiment of the present invention includes:

Determining a DCI for uplink scheduling, where the DCI includes at least a UL index domain and a DAI domain;

Send the DCL

A method for obtaining uplink scheduling information provided by the embodiment of the present invention includes:

Receiving a DCI sent by the network side, where the DCI includes at least a UL index domain and a DAI domain; and determining uplink scheduling information of the UE by the network side according to the DCI.

An uplink scheduling apparatus provided by an embodiment of the present invention includes:

a DCI determining unit, configured to determine a DCI used for uplink scheduling when the uplink scheduling is required, where the DCI includes at least a UL mdex domain and a DAI domain;

a sending unit, configured to send the DCL

An apparatus for acquiring uplink scheduling information according to an embodiment of the present invention includes:

a DCI receiving unit, configured to receive a DCI sent by the network side, where the DCI includes at least a UL index domain and a DAI domain;

And an information determining unit, configured to determine, according to the DCI, uplink scheduling information of the UE by the network side.

In the embodiment of the present invention, when uplink scheduling is required, determining a DCI for uplink scheduling, where the DCI includes at least a UL index domain and a DAI domain; and sending the DCI, thereby supporting scheduling corresponding to multiple uplink subframes simultaneously The signaling is transmitted in the same downlink subframe and the ACK NACK information corresponding to the multiple downlink subframes is transmitted in the same uplink subframe. DRAWINGS

1 is a schematic diagram of four aggregate carriers under an LTE-A base station using a CA; 2 is a schematic diagram of an LTE-A CA terminal aggregated in different bands, using different TDD uplink/downlink subframe configurations;

FIG. 3 is a schematic flowchart diagram of an uplink scheduling method according to an embodiment of the present disclosure;

4 is a schematic flowchart of a method for acquiring uplink scheduling information according to an embodiment of the present invention; FIG. 5 is a schematic structural diagram of an uplink scheduling device according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of an apparatus for acquiring uplink scheduling information according to an embodiment of the present invention. detailed description

The embodiment of the present invention provides a DCI for uplink scheduling, which is used to support that the scheduling signaling corresponding to multiple uplink subframes may be transmitted in the same downlink subframe and multiple times on one carrier. A scenario in which the ACK NACK information corresponding to the downlink subframe is transmitted in the same uplink subframe.

The scheduling signaling corresponding to the multiple uplink subframes is transmitted in the same downlink subframe and the ACK NACK information corresponding to the multiple downlink subframes is transmitted in the same uplink subframe, and is used in the uplink scheduling DCI. At least both the UL index field and the DAI field are included, and both are valid.

The UL index field is used to indicate one or more uplink subframes in which the scheduling signaling is transmitted in the same DCI.

The DAI field is used to indicate the sum of the number of PDSCHs actually transmitted in the plurality of downlink subframes in which the ACK NACK feedback information is transmitted by using the same uplink subframe, and the number of PDCCHs released by the downlink SPS resources, to determine whether there is downlink data. Lost.

When the scheduling signaling corresponding to the multiple uplink subframes on the carrier needs to be transmitted in the same downlink subframe, the UL index domain is valid, and the DAI domain is invalid.

When only the feedback information corresponding to the multiple downlink subframes on the carrier needs to be transmitted in the same uplink subframe, the D AI domain is valid, and the UL index domain is invalid.

Therefore, on the network side, referring to FIG. 3, an uplink scheduling method according to an embodiment of the present invention includes: S101. When DC scheduling needs to be performed, determining a DCI for uplink scheduling, where the DCI includes at least a UL index. Domain and DAI domain;

S102. Send the DCL.

Preferably, at least one domain of the UL index domain and the DAI domain is valid.

Preferably, when the scheduling signaling corresponding to the multiple uplink subframes on the carrier needs to be transmitted in the same downlink subframe and the feedback information corresponding to the multiple downlink subframes needs to be transmitted in the same uplink subframe, UL index The domain and the DAI domain are valid at the same time;

Preferably, when only the scheduling signaling corresponding to the multiple uplink subframes on the carrier needs to be transmitted in the same downlink subframe, the UL index domain is valid, and the DAI domain is invalid.

Preferably, when only feedback information corresponding to multiple downlink subframes needs to be transmitted in the same uplink subframe, the DAI domain is valid, and the UL mdex domain is invalid.

Preferably, the length of the UL index field is determined according to the number of uplink subframes that are simultaneously scheduled; for example, when the number of uplink subframes that can be simultaneously scheduled is 2, the length of the UL index field is 2;

Preferably, the length of the DAI field is determined according to the number of downlink subframes that transmit feedback information in the same uplink subframe;

For example: When the number of downlink subframes in which the feedback information is transmitted in the same uplink subframe is less than or equal to 4, the length of the DAI field is 2.

The length of the UL index field is predetermined or dynamically configured according to the uplink and downlink configuration on the carrier.

Generally, the UL index length is related to the number of uplink subframes that can be simultaneously scheduled, and the number of subframes that can be simultaneously scheduled is not limited to two. The DAI length is related to the number of downlink subframes in which the ACK NACK is fed back in the same uplink subframe, and the number of downlink subframes in which the ACK NACK is fed back in the same uplink subframe is not limited to the current technology, and can be further extended.

Preferably, the UL index field is indicated by means of a bit table bitmap.

For example, when the number of uplink subframes that can be simultaneously scheduled is 2, the length of the UL mdex domain is 2, where one bit corresponds to one subframe.

Preferably, the feedback information is ACK NACK information.

A description of two embodiments is given below.

Embodiment 1: Static/semi-static configuration Hybrid-ARQ ( HARQ, uplink and downlink hybrid automatic retransmission) timing. The static/semi-static configuration of the PDSCH HARQ timing relationship on the carrier, and the PUSCH scheduling or the HARQ timing relationship, for example, the Scell (secondary cell) in the inter-band CA system corresponds to a PDSCH HARQ timing relationship and a PUSCH scheduling or HARQ timing relationship, where The timing relationship may be configured by the base station in a semi-static configuration, or may be determined according to a pre-agreed, and the scheduling signaling corresponding to the multiple uplink subframes in the PUSCH scheduling or the HARQ timing relationship is transmitted in the same downlink subframe. The ACK NACK information corresponding to multiple downlink subframes in the PDSCH HARQ timing relationship is transmitted in the same uplink subframe.

In this scenario, the UL index domain and the DAI domain are always present and valid.

Embodiment 2: Dynamically configuring uplink and downlink HARQ timing.

The (carrier) scenario in which the PDSCH HARQ timing relationship on the carrier and the PUSCH scheduling or HARQ timing relationship are dynamically configured. And, the candidate PUSCH scheduling or the HARQ timing relationship includes multiple uplink sub-categories In the case where the scheduling signaling corresponding to the frame is transmitted in the same downlink subframe, the case where the ACK NACK information corresponding to the multiple downlink subframes is transmitted in the same uplink subframe in the candidate PDSCH HARQ timing relationship is in this scenario. The UL index and DAI fields always exist.

The scheduling signaling corresponding to multiple uplink subframes in the dynamically configured PUSCH scheduling or the HARQ timing relationship is transmitted in the same downlink subframe, and the dynamically configured PDSCH HARQ timing relationship corresponds to multiple downlink subframes.

The ACK NACK information is transmitted in the same uplink subframe. When both cases exist, both the UL mdex and DAI domains are valid.

When only the scheduling signaling corresponding to multiple uplink subframes in the dynamically configured PUSCH scheduling or HARQ timing relationship is transmitted in the same downlink subframe, UL mdex exists and is valid, and the DAI domain exists but is invalid.

When there are only dynamically configured PDSCH HARQ timing relationships, corresponding to multiple downlink subframes

When the ACK NACK information is transmitted in the same uplink subframe, the DAI domain exists and is valid, and the UL Index field exists but is invalid.

Correspondingly, on the UE side, referring to FIG. 4, an acquiring method of the uplink scheduling information provided by the embodiment of the present invention includes:

S201. The DCI sent by the network side is received, where the DCI includes at least a UL index domain and a DAI domain.

S202. Determine, according to the DCI, uplink scheduling information of the UE by the network side.

Preferably, at least one domain of the UL mdex domain and the DAI domain is valid.

Preferably, determining the uplink scheduling information of the user equipment UE by the network side according to the DCI, includes: transmitting, when the carrier has multiple scheduling subframes corresponding to the uplink subframes, in the same downlink subframe and multiple downlink subframes. When the feedback information corresponding to the frame is transmitted in the same uplink subframe, the UL index field and the DAI domain in the DCI are parsed.

Preferably, determining the uplink scheduling information of the UE by the network side according to the DCI, including:

When only the scheduling signaling corresponding to the multiple uplink subframes on the carrier needs to be transmitted in the same downlink subframe, the UL index domain in the DCI is parsed at least.

When only feedback information corresponding to multiple downlink subframes needs to be transmitted in the same uplink subframe, at least the DAI domain in the DCI is parsed.

On the network side, referring to FIG. 5, an uplink scheduling apparatus according to an embodiment of the present invention includes:

The DCI determining unit 11 is configured to: when the uplink scheduling needs to be performed, determine a DCI used for uplink scheduling, where the DCI includes at least a UL index domain and a DAI domain;

a sending unit 12, configured to send the DCL

Preferably, at least one domain of the UL mdex domain and the DAI domain is valid. Preferably, when the scheduling signaling corresponding to the multiple uplink subframes on the carrier is transmitted in the same downlink subframe and the feedback information corresponding to the multiple downlink subframes is transmitted in the same uplink subframe, the UL index The domain and the DAI domain are valid at the same time.

Preferably, when only the scheduling signaling corresponding to the multiple uplink subframes needs to be transmitted in the same downlink subframe, the UL index domain is valid, and the DAI domain is invalid.

Preferably, when only the feedback information corresponding to the multiple downlink subframes needs to be transmitted in the same uplink subframe, the DAI domain is valid, and the UL index domain is invalid.

Preferably, the DCI determining unit determines the length of the UL index field according to the number of uplink subframes scheduled at the same time;

Preferably, the DCI determining unit determines the length of the DAI field according to the number of downlink subframes in which the feedback information is transmitted in the same uplink subframe.

Preferably, the DCI determining unit indicates the UL index field in a manner of a bit table bitmap. Preferably, the feedback information is an acknowledgement ACK message or a non-acknowledgement NACK message.

Preferably, the uplink scheduling device is a base station.

Correspondingly, on the UE side, referring to FIG. 6, an apparatus for acquiring uplink scheduling information according to an embodiment of the present invention includes:

The DCI receiving unit 21 is configured to receive a DCI sent by the network side, where the DCI includes at least a UL index domain and a DAI domain;

The information determining unit 22 is configured to determine, according to the DCI, uplink scheduling information of the network side to the UE.

Preferably, the information determining unit 22 is specifically configured to:

When the scheduling signaling corresponding to the multiple uplink subframes on the carrier is transmitted in the same downlink subframe and the feedback information corresponding to the multiple downlink subframes is transmitted in the same uplink subframe, the foregoing is performed in the DCI. Both the UL index field and the DAI domain are parsed.

Preferably, the information determining unit 22 is specifically configured to:

Preferably, the acquiring device of the uplink scheduling information is a UE.

In summary, in the embodiment of the present invention, when the scheduling signaling corresponding to the multiple uplink subframes is transmitted in the same downlink subframe, the ACK NACK information corresponding to the multiple downlink subframes is transmitted in the same uplink subframe, and existing On the carrier, the DCI used for uplink scheduling includes at least one of the UL index domain and the DAI domain, where the UL index field is used to indicate one or more uplink subframes in which the scheduling signaling is transmitted in the same DCI; the DAI domain is used to indicate The sum of the number of actually transmitted PDSCHs and the number of PDCCHs released by the downlink SPS resources in the plurality of downlink subframes in which the ACK NACK feedback information is transmitted in the same uplink subframe is used to determine whether downlink data is lost. Since the UL index domain and the DAI domain exist in the DCI, the embodiment of the present invention can support that the scheduling signaling corresponding to multiple uplink subframes on one carrier simultaneously transmits and multiple times in the same downlink subframe. A scenario in which the ACK NACK information corresponding to the downlink subframe is transmitted in the same uplink subframe.

Those skilled in the art will appreciate that embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can be embodied in the form of one or more computer program products embodied on a computer-usable storage medium (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer usable program code. .

The present invention has been described with reference to flowchart illustrations and/or block diagrams of a method, apparatus (system), and computer program product according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

The computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device. The apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device. The instructions provide steps for implementing the functions specified in one or more flows of the flowchart or in a block or blocks of the flowchart.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that <RTIgt; </ RTI> <RTIgt; Therefore, it is intended that the appended claims be interpreted as including

It is apparent that those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments. Thus, it is intended that the present invention cover the modifications and modifications of the embodiments of the invention.

Claims

Rights request

An uplink scheduling method, the method comprising:

Determining downlink control information DCI for uplink scheduling, where the DCI includes at least an uplink indication UL index domain and a downlink allocation indication DAI domain;

Send the DCL

2. The method of claim 1 wherein at least one of the UL mdex domain and the DAI domain is valid.

The method according to claim 1, wherein the scheduling signaling corresponding to the multiple uplink subframes on the carrier is transmitted in the same downlink subframe and the feedback information corresponding to the multiple downlink subframes is the same. When transmitting in an uplink subframe, the UL mdex domain and the DAI domain are simultaneously valid.

The method according to claim 1, wherein the UL mdex domain is valid when the scheduling signaling corresponding to the multiple uplink subframes on the carrier needs to be transmitted in the same downlink subframe, The DAI domain is invalid.

The method according to claim 1, wherein when the feedback information corresponding to the plurality of downlink subframes on the carrier needs to be transmitted in the same uplink subframe, the DAI domain is valid, and the UL mdex domain is valid. invalid.

The method according to claim 1, wherein the length of the UL mdex domain is determined according to the number of uplink subframes that can be simultaneously scheduled.

The method according to claim 1, wherein the length of the DAI field is determined according to the number of downlink subframes in which feedback information is transmitted in the same uplink subframe.

8. The method of claim 1 wherein the UL mdex domain is indicated by a bit table bitmap.

A method for obtaining uplink scheduling information, where the method includes:

Receiving downlink control information DCI sent by the network side, where the DCI includes at least an uplink indication UL index domain and a downlink allocation indication DAI domain;

And determining uplink scheduling information of the user equipment UE by the network side according to the DCI.

The method according to claim 9, wherein at least one of the UL index domain and the DAI domain is valid.

The method according to claim 9, wherein determining the uplink scheduling information of the user equipment UE by the network side according to the DCI includes:

When the scheduling signaling corresponding to the multiple uplink subframes on the carrier is transmitted in the same downlink subframe and the feedback information corresponding to the multiple downlink subframes is transmitted in the same uplink subframe, the foregoing is performed in the DCI. UL index Both the domain and the DAI domain are parsed.

14. An uplink scheduling device, the device comprising:

a DCI determining unit, configured to determine downlink control information (DCI) for uplink scheduling when the uplink scheduling is required, where the DCI includes at least an uplink indication UL index field and a downlink allocation indication DAI domain, and a sending unit, configured to send DCL

15. The apparatus according to claim 14, wherein at least one of the UL index domain and the DAI domain is valid.

The device according to claim 14, wherein the scheduling signaling corresponding to the multiple uplink subframes on the carrier is transmitted in the same downlink subframe and the feedback information corresponding to the multiple downlink subframes is the same. When transmitting in an uplink subframe, the UL index domain and the DAI domain are simultaneously valid.

The apparatus according to claim 14, wherein when the scheduling signaling corresponding to the plurality of uplink subframes needs to be transmitted in the same downlink subframe, the UL index domain is valid, and the DAI domain is valid. invalid.

The apparatus according to claim 14, wherein when only feedback information corresponding to a plurality of downlink subframes needs to be transmitted in the same uplink subframe, the DAI domain is valid, and the UL index domain is invalid.

The apparatus according to claim 14, wherein the DCI determining unit determines the length of the UL index field according to the number of uplink subframes that are simultaneously scheduled.

The apparatus according to claim 14, wherein the DCI determining unit determines the length of the DAI field according to the number of downlink subframes in which feedback information is transmitted in the same uplink subframe.

The apparatus according to claim 14, wherein the DCI determining unit indicates the UL index i or by means of a bit table bitma.

22. An apparatus for acquiring uplink scheduling information, the apparatus comprising:

a DCI receiving unit, configured to receive downlink control information DCI sent by the network side, where the DCI includes at least an uplink indication UL index domain and a downlink allocation indication DAI domain;

And an information determining unit, configured to determine uplink scheduling information of the network side to the user equipment UE according to the DCI.

23. The apparatus according to claim 22, wherein the UL index domain and the DAI At least one domain is valid in the domain.

The device according to claim 22, wherein the information determining unit is specifically configured to: when the scheduling signaling corresponding to multiple uplink subframes exists on the carrier, transmit and transmit in the same downlink subframe When the feedback information corresponding to the downlink subframes is transmitted in the same uplink subframe, the UL index domain and the DAI domain in the DCI are parsed.

The device according to claim 22, wherein the information determining unit is specifically configured to: when there are only a plurality of uplink subframes, the scheduling signaling corresponding to the uplink subframe needs to be transmitted in the same downlink subframe, At least parsing the UL index field in the DCI.

The device according to claim 22, wherein the information determining unit is specifically configured to: when only feedback information corresponding to multiple downlink subframes needs to be transmitted in the same uplink subframe, at least Parsing the DAI domain in the DCI.