A data transmission method, base station, user equipment and system

Abstract

The present invention discloses a data transmission method, a base station, a user equipment and a system. The method comprises: determining an adjusted frame structure of each time unit within a preset duration; notifying the user equipment UE of the adjusted frame structure; and transmitting data according to the adjusted frame structure.

Description

[0001] This application is a divisional application of the Chinese patent application with application number "201610966244.4", application date "November 4, 2016", and title "A data transmission method, base station, user equipment and system". Technical Field

[0002] The present invention relates to transmission management technology in the field of communications, and in particular to a data transmission method, a base station, a user equipment and a system. Background Art

[0003] 5G needs to solve some challenges brought by diverse application scenarios. For example, for such low-latency applications, high latency indicators are required, and users need to be provided with millisecond-level end-to-end latency. At the same time, it is an inevitable trend to support service adaptation in 5G communications for forward compatibility. Service adaptation refers to allowing semi-static or dynamic configuration of uplink and downlink to meet service load requirements or match service load changes. Therefore, how to support or implement flexible duplex or dynamic TDD is the first problem to be solved, which has not yet been discussed in the 3GPP standard.

[0004] In addition, issues related to scheduling and hybrid automatic repeat request HARQ processes caused by dynamic changes in uplink and downlink also need to be considered. For example, the base station sends a DCI in time slot 1 to schedule time slot 3 and time slot 4 for uplink data transmission, but suddenly a high-priority downlink data is sent in time slot 2, such as a downlink URLLC service data packet, or strong interference is measured. In order to meet business needs, how should the base station handle this? For another example, when the base station is sending downlink data or DRS in multiple consecutive time slots, there is suddenly an uplink scheduling request that requires the base station to immediately allocate an uplink resource to the UE to send a high-priority service data packet. At this time, how should the base station schedule, how to notify the UE, and the HARQ processing of the corresponding scheduling data need to be considered.

[0005] Therefore, how to achieve flexible duplexing and related signaling design under different business requirements, as well as the impact on scheduling and subsequent HARQ and corresponding solutions need to be considered. Summary of the invention

[0006] In view of this, an object of the present invention is to provide a data transmission method, a base station, a user equipment and a system, which can at least solve the above-mentioned problems existing in the prior art.

[0007] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0008] An embodiment of the present invention provides a data transmission method, including:

[0009] Determining an adjusted frame structure for each time unit within a preset duration;

[0010] Notifying the user equipment UE of the adjusted frame structure;

[0011] Data is transmitted according to the adjusted frame structure.

[0012] An embodiment of the present invention provides a data transmission method, including:

[0013] receiving an adjusted frame structure sent by a base station;

[0014] Data is transmitted according to the adjusted frame structure.

[0015] An embodiment of the present invention provides a base station, the base station comprising:

[0016] A control unit, configured to determine an adjusted frame structure for each time unit within a preset duration;

[0017] The communication unit is used to notify the user equipment UE of the adjusted frame structure; and transmit data according to the adjusted frame structure.

[0018] An embodiment of the present invention provides a UE, wherein the UE includes:

[0019] A receiving unit, configured to receive the adjusted frame structure sent by the base station;

[0020] The sending unit is used to transmit data according to the adjusted frame structure.

[0021] An embodiment of the present invention provides a data transmission system, the system comprising:

[0022] The base station is used to determine the adjusted frame structure of each time unit within a preset time length; notify the user equipment UE of the adjusted frame structure; and transmit data according to the adjusted frame structure;

[0023] UE is used to receive the adjusted frame structure sent by the base station; and perform data transmission according to the adjusted frame structure.

[0024] An embodiment of the present invention provides a base station, the base station comprising: a storage medium and a processor;

[0025] The storage medium includes a set of instructions that, when executed, cause at least one processor to perform operations including:

[0026] Determining an adjusted frame structure for each time unit within a preset duration;

[0027] Notifying the user equipment UE of the adjusted frame structure;

[0028] Data is transmitted according to the adjusted frame structure.

[0029] An embodiment of the present invention provides a UE, the UE comprising: a storage medium and a processor;

[0030] The storage medium includes a set of instructions that, when executed, cause at least one processor to perform operations including:

[0031] The adjusted frame structure sent by the receiving base station is then transmitted; and data is transmitted according to the adjusted frame structure.

[0032] The embodiment of the present invention provides a data transmission method, a base station, a user equipment and a system, wherein the base station side can flexibly adjust the adjusted frame structure of the time unit within the preset duration, and send the adjusted frame structure to the UE, so that the base station and the UE can transmit data to each other based on the adjusted frame structure. Therefore, the problem of dynamic uplink and downlink data transmission according to business needs is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1-1 Schematic diagram 1 of the data transmission method flow chart of an embodiment of the present invention;

[0034] Figure 1-2 Schematic diagram 2 of the data transmission method flow chart according to an embodiment of the present invention;

[0035] Figure 2-1 A schematic diagram of resource allocation provided in accordance with an embodiment of the present invention;

[0036] Figure 2-2 Schematic diagram 2 of resource allocation provided by an embodiment of the present invention;

[0037] Figure 3 Resource allocation diagram provided by the embodiment of the present invention Figure 3 ;

[0038] Figure 4 Resource allocation diagram provided by the embodiment of the present invention Figure 4 ;

[0039] Figure 5 The data transmission method according to the embodiment of the present invention is shown in FIG. Figure 3 ;

[0040] Figure 6 The data transmission method according to the embodiment of the present invention is shown in FIG. Figure 4 ;

[0041] Figure 7-1 A schematic diagram of the structure of a base station provided in an embodiment of the present invention;

[0042] Figure 7-2A schematic diagram of the structure of a user equipment provided by an embodiment of the present invention;

[0043] Figure 7-3 A schematic diagram of the system composition structure provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] The present invention provides a data transmission method, such as Figure 1-1 As shown, including:

[0046] Step 101: determining an adjusted frame structure of each time unit within a preset duration;

[0047] Step 102: Notify the user equipment UE of the adjusted frame structure;

[0048] Step 103: Transmit data according to the adjusted frame structure.

[0049] The first content of the embodiment of the present invention is to: how to implement flexible duplex or dynamic TDD, determine the uplink and downlink configurations and how to indicate.

[0050] First, the uplink and downlink configuration is determined by at least one of the following:

[0051] Priority of data services;

[0052] Priority of channel or signal or link;

[0053] According to the perception result of the carrier;

[0054] Coordination between neighboring communities;

[0055] UE capabilities.

[0056] The configured time unit includes one of the following: a subframe, a time slot, a mini-slot, and m OFDM symbols, where m is an integer greater than or equal to 1.

[0057] Then, notifying the UE of the adjusted frame structure includes at least one of the following:

[0058] Indicating the adjusted frame structure through physical layer signaling;

[0059] The adjusted frame structure is configured through high-level signaling;

[0060] The adjusted frame structure is notified through multicast signaling or system messages.

[0061] Specifically, the base station notifies the UE of the uplink and downlink configuration or also includes blank resources through at least one of the following information: SIB, PBCH, RRC, and dynamic physical layer signaling such as DCI. The blank resources represent resources that are at least not configured for transmitting data information.

[0062] The adjusted frame structure includes:

[0063] Configure a first number of slots or mini-slots or OFDM symbols for uplink transmission of uplink preset information; wherein the preset information includes at least one of the following: uplink ACK / NACK, SR, SRS, preamble initial access, uplink retransmission data packet;

[0064] A second number of slots or mini-slots or OFDM symbols are configured for downlink transmission of downlink preset information; wherein the downlink preset information includes at least one of the following: a downlink control channel, a synchronization channel, a downlink broadcast channel, or a DRS signal.

[0065] A third number of slots or mini-slots or OFDM symbols are configured as reserved resources or as blank resources; wherein the blank resources represent resources that are at least not configured as resources for transmitting data information.

[0066] That is, semi-static + dynamic signaling indication mode. At least one of the following modes is adopted:

[0067] Method 1:

[0068] Two adjacent base stations negotiate and semi-statically configure certain time domain locations for sending important downlink or uplink information. For example, certain slots or OFDM symbols are configured for uplink ACK / NACK, SR, SRS, or preamble initial access or retransmission data packets. Certain slots or OFDM symbols are configured for sending downlink control channels, synchronization channels, or similar DRS signals. The base station can then dynamically indicate the remaining time domain resources as uplink or downlink or blank resources.

[0069] Method 2:

[0070] Configure a matching set and / or pattern, and indicate the index of the matching set and / or pattern through dynamic signaling; semi-statically configure some matching sets and / or patterns, and dynamically indicate the index.

[0071] Method 3:

[0072] Configure the size of a subframe group / time slot group, and dynamically indicate the uplink and downlink configuration of each subframe / time slot in each subframe group / time slot group. Semi-statically configure the size of a subframe / time slot group, and dynamically indicate the uplink and downlink configuration of each subframe / time slot in each subframe / time slot group.

[0073] The uplink authorization information includes time domain location information where uplink data transmission is scheduled, and the downlink authorization information includes time domain location information where downlink data transmission is scheduled.

[0074] The specific manner in which the base station dynamically indicates includes:

[0075] The uplink time domain position is determined by scheduling the uplink authorization information of the uplink data; the downlink time domain position is determined by scheduling the downlink authorization information of the downlink data;

[0076] A downlink control information is carried through the common search space of the downlink control channel to indicate the uplink and downlink configuration information of the subsequent k slots or m mini-time slots or to indicate blank resources.

[0077] Specifically, method 1: the time domain position of the uplink data is implicitly determined by the uplink grant information for scheduling the uplink data. The time domain position of the downlink data is implicitly determined by the downlink grant information for scheduling the downlink data.

[0078] Method 2: A downlink control information is carried through the common search space of the downlink control channel to indicate the uplink or downlink attributes of the subsequent k slots or mini-slots or that a slot is blank, as well as the attributes of each OFDM symbol in the mixed slot.

[0079] Further, the common control information is sent in a control area of ​​a predefined or configured downlink time unit, or is sent in each downlink time unit.

[0080] Method 3: A dedicated downlink control information is carried through a dedicated search space of the downlink control channel to indicate that the uplink and downlink configuration attributes of the subsequent t-th slot or s-th mini-time slot have changed or are blank resources; t and s are positive integers.

[0081] In particular, for a mixed slot structure including both uplink and downlink, the uplink, downlink or blank resource of each symbol is determined by a two-level indication method.

[0082] Furthermore, the first-level DCI indicates the length of each mini-slot, and the second-level DCI indicates the uplink and downlink or blank resources of each mini-slot.

[0083] In particular, for the carrier aggregation scenario, the uplink and downlink configuration dynamic adjustment method is applicable to all cells, and the uplink and downlink configuration indication information of the secondary cell Scell ​​is sent through the downlink control channel of the primary cell Pcell, or is sent only on the downlink control channel of the cell.

[0084] For the dual-link scenario, the uplink and downlink configuration indication information of the secondary cell Scell ​​may also be sent through the downlink control channel of the primary and secondary cells PScell.

[0085] The embodiment of the present invention is directed to the second content: processing of the impact on scheduling and HARQ, which may include:

[0086] Adjusting the time slot n or the mini-slot in the time slot n used for downlink data transmission to the time slot n or the mini-slot in the time slot n used for uplink data transmission;

[0087] Adjusting the time slot m or the mini-slot in the time slot m used for uplink data transmission to the time slot m or the mini-slot in the time slot m used for downlink data transmission;

[0088] Adjusting the time slot n or the mini-slot within the time slot n used for downlink data transmission to blank resources;

[0089] The timeslot m or the mini-slot within the timeslot m used for uplink data transmission is adjusted to blank resources.

[0090] Specifically, a downlink data packet is originally scheduled to be transmitted in time slot n or a mini-slot within n. Since time slot n or a mini-slot within n is temporarily and dynamically adjusted to uplink to send a high-priority service or for interference coordination with adjacent cells, the processing of the original data packet can be one of the following:

[0091] The data originally sent in time slot n or a mini-slot within time slot n is discarded, and the terminal is indicated that the data packet is damaged, and the scheduling is not counted in the number of retransmissions; or, the data originally sent in time slot m or a mini-slot within time slot m is discarded, and the terminal is indicated that the data packet is damaged, and the scheduling is not counted in the number of retransmissions;

[0092] Sending the data packet originally to be sent in time slot n or a mini-slot within time slot n, and the data packet originally to be sent in time slot m or a mini-slot within time slot m with reduced power or lowered modulation coding scheme MCS;

[0093] Rescheduling the data packets originally to be sent in time slot n or a mini-slot within time slot n, and / or the data packets originally to be sent in time slot m or a mini-slot within time slot m to other resources; Rescheduling the data packets originally to be sent in time slot n or a mini-slot within time slot n, and the data packets originally to be sent in time slot m or a mini-slot within time slot m to other resources for transmission;

[0094] The data packets originally to be sent in time slot n or a mini-slot within time slot n, and / or the data packets to be sent in time slot m or a mini-slot within time slot m are sent on the reserved resources; the data packets originally to be sent in time slot n or a mini-slot within time slot n, and the data packets to be sent in time slot m or a mini-slot within time slot m are sent on the reserved resources. It should be pointed out that the above-mentioned reserved resources and other resources can essentially be time domain and / or frequency domain resources, but other resources and reserved resources can refer to different resource locations respectively.

[0095] That is, method 1: directly discard the data originally sent at the position, and indicate to the terminal that the data packet is damaged, avoiding the impact of retransmission merging. No ACK / NACK feedback is required, and it is not counted in the number of retransmissions.

[0096] Method 2: Still send the data packet with reduced power or low MCS.

[0097] Method three: reschedule the data packet to another time domain position, another frequency domain position, or another carrier.

[0098] Furthermore, for the feedback processing of ACK / NACK:

[0099] When the re-indicated data transmission position is behind the original ACK / NACK feedback position, the DCI information also includes new resource position information of the ACK / NACK feedback corresponding to the data packet, and indicates the new data packet position and the corresponding ACK / NACK position in a joint coding manner.

[0100] Mode 4: The base station sends the data packet on some reserved downlink resources.

[0101] An uplink data packet is originally scheduled to be transmitted in time slot m or a mini-slot within m. Since time slot m or a mini-slot within m is temporarily and dynamically adjusted to downlink to send high-priority services or for interference coordination of adjacent cells, the processing of the original data packet can be one of the following:

[0102] Directly abandon the transmission of the data packet originally transmitted in this time slot.

[0103] The UE continues to blindly detect the DCI information that triggers the sending indication. When the indication information that triggers the sending is detected again, the UE again sends the prepared data packet at the indicated position.

[0104] Or a timer is set, and when new trigger information is received within the timer time, the data packet is sent according to the instruction information, and the data packet is abandoned only when no new trigger information is received within the timer time.

[0105] The other time-frequency resources include: a PRB position or a new time slot position or a codebook or orthogonal code resource. For example, a trigger signaling is sent to the UE originally scheduled at the position to indicate a new scheduling position, including a new PRB position or a new time slot position or a codebook or orthogonal code resource.

[0106] The UE sends the data packet on some reserved uplink resources.

[0107] For scheduling and HARQ timing impact processing:

[0108] For the scenario of semi-statically configured scheduling and feedback timing, the data transmission subframe determines the data transmission subframe according to the reference subframe configuration and the configured timing value. Or the original semi-statically configured timing is switched to dynamic indication timing. For dynamic signaling indication timing, the timing indication is modified again.

[0109] Others include: different uplink and downlink configurations for subbands with different bandwidths, and setting a guard band when the uplink and downlink configurations of two adjacent subbands are different.

[0110] For large bandwidth, the uplink and downlink configurations of different subbands can be different. When two adjacent subbands have different uplink and downlink, a protection band is needed to avoid adjacent channel interference. The base station notifies the UE of the uplink and downlink configurations of different subbands in two dimensions of time and frequency.

[0111] Certain signals / channels, such as a discovery reference signal (DRS) / preamble of a random access channel, are sent within a sending window, and the sending positions of these signals can be dynamically adjusted for high-priority service transmission.

[0112] The present invention also provides a data transmission method for UE, such as Figure 1-2 As shown, the method includes:

[0113] Step 201: receiving an adjusted frame structure sent by a base station;

[0114] Step 202: Perform data transmission according to the adjusted frame structure.

[0115] After receiving the adjusted uplink and downlink configuration information or frame structure sent by the base station, the method further includes:

[0116] The UE determines that the uplink and downlink configuration information of the corresponding time unit has changed based on the uplink and downlink configuration information or the frame structure, and performs one of the following processing on the originally scheduled data packet:

[0117] The UE blindly detects new scheduling information of the base station within a predefined time;

[0118] The scheduling information is scrambled by a dedicated identifier, and the scheduling information indicates that the original data packet is rescheduled to another time domain position, or another frequency domain position, or another carrier, or another codebook, or another orthogonal code resource;

[0119] When the rescheduling control information is not detected within a predefined time, the UE abandons sending or receiving the data, or the UE sends or receives data packets on some reserved resources.

[0120] Based on the above scheme, the present invention provides the following embodiments:

[0121] Embodiment 1,

[0122] This embodiment describes in detail how the base station notifies the subordinate UE of the link direction or uplink and downlink attributes and blank resources.

[0123] The base station notifies the UE of the uplink and downlink configuration through at least one of the following information.

[0124] SIB, PBCH, RRC, and dynamic physical layer signaling such as DCI.

[0125] For example, the uplink and downlink attributes at a certain moment are determined by one of the following:

[0126] Method 1: The system specifies certain fixed time domain positions, such as certain fixed slots or OFDM symbols, for sending uplink ACK / NACK, SR, SRS or preamble initial access or retransmission data packets.

[0127] For example, slot 1 is used to send SR, the last OFDM symbol of slot 4 is used to send SRS, slot 5 is used to send message 1 or preamble signal of random access process, and the last OFDM symbol of slot 8 is used to send ACK / NACK.

[0128] At the same time, certain slots or OFDM symbols are fixedly used for sending certain downlink data or information.

[0129] For example, the first OFDM symbol of slot 0 is fixedly used for sending a downlink control channel, slot 4 is used for sending a downlink synchronization channel, and slot 7 is used for sending a DRS.

[0130] Then the base station can dynamically indicate whether the remaining resources except the fixed resources are uplink or downlink or blank resources.

[0131] Method 2: Two adjacent base stations negotiate and then semi-statically configure certain time domain positions for transmitting downlink data or uplink data.

[0132] For example, cell 1 and cell 2 are two adjacent cells. When the two cells belong to the same base station, the base station can semi-statically configure certain time domain resources for transmitting uplink data or uplink data through high-layer signaling according to demand.

[0133] When the two adjacent cells belong to different base stations, the two base stations can exchange information through the air interface, and then notify the UE in the cell of the uplink and downlink attributes of the negotiated time domain position through high-layer signaling.

[0134] For example, slot 1 of two adjacent cells determined after negotiation between adjacent base stations is used to send SR, the last OFDM symbol of slot 4 is used to send SRS, and slot 5 is used to send message 1 or preamble signal of random access process. The last OFDM symbol of slot 8 is used to send ACK / NACK. The first OFDM symbol of slot 0 is used to send downlink control channel, slot 4 is used to send downlink synchronization channel, and slot 7 is used to send DRS.

[0135] Each base station then dynamically adjusts or configures the remaining time domain resources according to uplink and downlink service requirements.

[0136] Method 3: All resources are dynamically indicated by the base station.

[0137] Mode 4: a portion of resources is fixedly used for uplink data or downlink data transmission, a portion of resources is semi-statically configured as uplink data or downlink data transmission or blank resources, and a portion of resources dynamically indicates uplink data or downlink data transmission or blank resources.

[0138] The specific manner in which the base station dynamically indicates includes:

[0139] Method 1: The time domain position of the uplink data is implicitly determined by the uplink authorization information of the scheduled uplink data. The time domain position of the downlink data is implicitly determined by the downlink authorization information of the scheduled downlink data. That is, the time domain position of the scheduled uplink data transmission is the uplink data, and the position of the scheduled downlink data transmission is the downlink data.

[0140] The uplink authorization information and the downlink authorization information are carried through a dedicated search space of a downlink control channel. The downlink control channel is located in the first few OFDM symbols of certain semi-statically configured or fixed slots.

[0141] Method 2: Display signaling notification through public control information.

[0142] For example, a downlink control information is carried through the common search space of the downlink control channel to indicate the uplink or downlink properties of the subsequent k slots or mini-slots or that a slot is blank, as well as the properties of each OFDM symbol in the mixed slot.

[0143] For example, Bitmap is used to indicate whether the subsequent k slots or mini-slots are uplink or downlink attributes. 0 represents uplink, and 1 represents downlink. Or inversion means that the uplink and downlink attributes of the slot or mini-slot have changed, and no inversion means that the uplink and downlink attributes of the slot or mini-slot have not changed. If a time slot changes from 0 to 1, it means that the uplink and downlink attributes have changed, otherwise it means that the attributes of the time slot have not changed.

[0144] Method 3: Notify which time slot configuration changes through dedicated control information.

[0145] For example, 3 bits or 4 bits in the DCI indicate which time slot or mini-time slot configuration has changed, and further, 1 bit indicates the change between uplink and downlink, or the resource becomes a blank resource. If the 1 bit is 0, it indicates that the time slot or mini-time slot changes the uplink and downlink attributes, and 1 indicates that the time slot or mini-time slot is a blank resource.

[0146] Mode 4: Predefine or semi-statically configure some uplink and downlink frame structure patterns and the granularity of time slot allocation changed by the base station through high-level signaling, and then the base station dynamically indicates the index of the pattern.

[0147] For example, the size of the semi-statically configured time slot group is 4, and then the dynamic DCI signaling notifies the uplink and downlink configurations of every 4 time slots. The specific notification can also be in the form of notifying the uplink and downlink ratio index, as shown in Table 1 below. Each ratio index corresponds to an uplink and downlink ratio, and the configuration of each time slot is determined one by one in the order of downlink time slot first and then uplink time slot. The missing time slot is a blank time slot. If there are both uplink and downlink time slots, the blank time slot is located between the downlink time slot and the uplink time slot.

[0148] Table 1

[0149]

[0150]

[0151] The UE determines the reception or transmission of data or the reservation of resources at each moment by receiving the above information.

[0152] Through the above method, the UE can accurately know the direction of data transmission, so as to correctly receive or send data.

[0153] Embodiment 2,

[0154] This embodiment describes in detail the situation where the uplink and downlink configurations in the frame structure are dynamically changed.

[0155] The uplink and downlink configuration of the frame structure includes reserving or configuring some blank resources.

[0156] In addition to the dynamic changes in uplink and downlink attributes of a subframe or time slot or mini-slot or several OFDMs, the base station may also need to dynamically indicate some blank resources to instruct the UE not to send any data on these resources during data transmission.

[0157] These blank resources include n consecutive PRBs in the frequency domain and one or more slots or one or more OFDM symbols in a time slot in the time domain. For example, the base station indicates through a bitmap in the public control information DCI of the first OFDM symbol in a time slot which symbols of the remaining 6 OFDM symbols of the 7 OFDM symbols contained in the slot need to be reserved or which symbol to reserve.

[0158] For a reserved or empty resource location use at least one of the following:

[0159] The UE does not need to receive data at the reserved position.

[0160] Used by sites to sense and detect interference.

[0161] Used for dynamic adjustment of sending and receiving.

[0162] Coexist with traditional systems.

[0163] Some resources are reserved for sending data packets that could not be sent.

[0164] Used to send multicast services.

[0165] The position of the blank symbol may also be semi-statically configured by high-level signaling, and the frequency domain position occupies a part of the bandwidth.

[0166] Preferably, the blank symbol is located between uplink and downlink data transmission or between two mini-slots.

[0167] By configuring these blank resources, the system's forward compatibility requirements and flexible resource adjustment are met.

[0168] The base station notifying the uplink and downlink configurations also includes: semi-statically configuring a time slot group size, and then dynamically signaling to indicate the uplink and downlink configurations in each time slot group.

[0169] As attached Figure 2-1As shown, the base station initially configures the time slot group size to be 4 time slots. Then the dynamic DCI indicates that the uplink and downlink ratio in the first time slot group is 0:4, and it is predefined to be arranged in the order of downlink time slot first and uplink time slot. This means that the first time slot to the fourth time slot are all downlink. For example, if the DCI indicates that the uplink and downlink ratio in the second time slot group is 2:1, then the first of the four time slots is downlink, the second is blank, and the third and fourth are uplink. Then the high-level signaling semi-statically changes the size of the time slot group to 2 time slots. And through dynamic signaling, it is indicated that the uplink and downlink ratio of the first time slot group is 1:1, which means that the first time slot is downlink and the second time slot is uplink. Then the uplink and downlink ratio of the second time slot group is 2:0, which means that the first time slot is downlink and the second time slot is also downlink.

[0170] The signaling overhead can be further reduced by using this indication method.

[0171] Embodiment 3,

[0172] This embodiment describes the granularity of dynamic TDD and the specific adjustment scenarios and methods.

[0173] The base station determines the uplink and downlink attributes at a certain moment by at least one of the following:

[0174] Priority of data services. High-priority services are sent first and the corresponding uplink and downlink attributes are configured for the data packet. For two data packets with the same service priority but in different directions, the final link direction is determined through competition.

[0175] Priority of channels or signals. Different channels and signals are predefined to have different priorities. Channels or signals with high priority are sent first, and then the base station broadcasts the corresponding uplink and downlink attributes. Channels or signals with low priority are sent later.

[0176] The uplink and downlink data transmission is determined according to the contention result of the carrier.

[0177] The result of coordination between adjacent cells. If an adjacent cell sends a high-priority downlink data transmission at a certain moment, in order to avoid cross-link interference to the data, the cell also needs to be configured for downlink data transmission.

[0178] According to the capability of UE.

[0179] The granularity of dynamically changing uplink and downlink time slot allocation includes: a subframe 1ms, a slot granularity, or a mini-slot granularity, or a granularity of n OFDM symbols, where n is semi-statically configured or dynamically indicated by signaling.

[0180] For example, suppose the length of the mini-slot is semi-statically configured to be 2 OFDM symbols, and the structure of a slot is as shown in the following figure. Figure 2-2 As shown. The length of a slot is 7 OFDM symbols. The first OFDM symbol is fixed for the downlink control channel and contains the uplink and downlink attributes of the subsequent 3 mimi-slots. For example, if the adjusted frame structure is indicated to the user equipment as 011 through a bitmap, it indicates that the first mini-slot is downlink and the remaining two mini-slots are uplink.

[0181] Furthermore, the uplink and downlink configurations of different subbands in a certain system bandwidth may be different in the same time period. For example, the uplink and downlink configurations of subband 1 in a certain subframe are configuration pattern 1, the uplink and downlink configurations of subband 2 are pattern 2, and the uplink and downlink configurations of subband 3 are pattern 3. There is also a guard band between subbands.

[0182] The above method can dynamically adjust the uplink and downlink configurations of different frequency bands and different times within the system bandwidth.

[0183] Embodiment 4,

[0184] This embodiment describes the situation where the uplink data transmission process is adjusted to downlink.

[0185] The base station sends a multi-slot continuous scheduling DCI information to the UE in time slot 0. The information is carried in the UE-specific search space, for example, Figure 3 As shown, time slots 4, 5 and time slot 6 are continuously scheduled for uplink data packet transmission. As a result, in time slot 2, the base station suddenly has a downlink high priority data packet, such as a URLLC packet to be sent, and the base station sends a time slot uplink and downlink configuration change signaling in the frame structure in the common DCI of time slot 3, changing time slot 5 to downlink, and then the base station sends downlink scheduling information to schedule the URLLC data packet to be sent in time slot 5.

[0186] After all UEs detect the common indication information, they perform one of the following processes on the data packets of the UE scheduled in time slot 5:

[0187] Method 1: Abandon the transmission of the data packet in the time slot and discard it directly.

[0188] Mode 2: The data packet is sent at a lower power in the time slot.

[0189] Mode 3: The UE continues to blindly detect the DCI information that triggers the sending of the instruction. When the instruction information that triggers the sending is detected again, the UE sends the prepared data packet at the indicated position.

[0190] For example, the base station sends a scheduling update signaling to the UE originally scheduled at the position, and the scheduling update signaling indicates the new scheduling position, including the new PRB position or the new time slot position or also includes a codebook or orthogonal code resources. For example, the data packet originally scheduled in slot 5 is scheduled to be sent in slot 6, and an orthogonal code may be configured at the same time.

[0191] Mode 4: The UE sends the data packet on some reserved uplink resources.

[0192] The reserved resources are fixed resources or semi-statically configured resources. For example, slot 7 is a reserved time slot resource used as a new sending location when the originally scheduled data packet cannot be sent.

[0193] Then the base station receives the data packet according to the indicated new location or the reserved resource location.

[0194] The above method solves the problem of data sending and receiving when the uplink and downlink configurations are dynamically adjusted.

[0195] Embodiment 5,

[0196] This embodiment describes the situation where the downlink data transmission process is adjusted to the uplink.

[0197] The base station sends a multi-slot continuous scheduling DCI information to the UE in the first OFDM symbol of time slot 0. This information is carried in the UE-specific search space, for example Figure 3 As shown, time slots 0, 1, 2 and time slot 3 are continuously scheduled to send downlink data packets. As a result, in time slot 1, the base station suddenly receives an uplink scheduling request from a UE, requiring the base station to immediately allocate an uplink resource to the UE to send a high-priority service data packet, such as a URLLC packet to be sent. The base station then sends an uplink and downlink change signaling in the public downlink control information of time slot 2 to change time slot 2 to uplink. After receiving the public information, the UE can sense certain resources in the time slot for UEs with high-priority services. If the resources are not in use, uplink data can be sent in a grant-free manner. Alternatively, the base station simultaneously sends an authorization message to the UE that sent the scheduling request in the dedicated search space of the control channel of time slot 2, indicating certain PRB resources of certain OFDM symbols in time slot 2 and scheduling information such as MCS. For the downlink data packet originally scheduled at this position, the base station can have one of the following processes:

[0198] The transmission of the data packet is abandoned. Meanwhile, the UE does not need to receive the scheduled downlink data packet and does not need to feedback ACK / NACK.

[0199] The data packet is still sent at a power lower than the original transmission power.

[0200] The data packet is rescheduled to another time domain position, another frequency domain position, or another carrier.

[0201] A timer is set, and the data packet is discarded if no rescheduling indication information is received within the timer.

[0202] For example, the base station resends a DCI to the UE corresponding to the downlink data packet originally scheduled at the position, notifying the original data packet to be resent at time slot 4. Specifically, it may be k slot offsets of the original position, where k=2.

[0203] If the re-indicated position is behind the original ACK / NACK feedback position, the DCI information may include new resource position information of the ACK / NACK feedback corresponding to the data packet.

[0204] For example, the transmission position of the ACK / NACK feedback corresponding to the downlink data packet in time slot 2 originally indicated is the last OFDM symbol in time slot 3. Since the data packet in time slot 2 is not sent by the base station, the UE feeds back NACK or nothing in time slot 3.

[0205] If the base station re-indicates that the position of ACK / NACK feedback corresponding to the data packet is time slot 5, after receiving the data packet in time slot 4, the UE feeds back the corresponding ACK / NACK in time slot 5 according to the new indication information.

[0206] Or the base station indicates the new data packet position and the corresponding ACK / NACK position in a joint coding manner.

[0207] The base station sends the data packet on some reserved downlink resources.

[0208] The reserved resources are fixed resources or semi-statically configured resources. For example, slot 7 is a reserved time slot resource used as a new sending location when the originally scheduled data packet cannot be sent.

[0209] The above method solves the problem of data sending, receiving and feedback when the uplink and downlink configurations are dynamically adjusted.

[0210] Embodiment 6,

[0211] This embodiment describes the process of data scheduling adjustment in the process of sending a downlink synchronization signal and a measurement signal by a base station.

[0212] For example, the system defines that downlink synchronization signals and channel measurement signals can be sent within some predefined time windows. Assuming that the sending time window is 2ms and contains 4 slots, these signals can have 4 possible sending positions within a sending cycle, or can be sent in any of the 4 slots. The base station can dynamically adjust the sending position of these signals according to the service priority requirements. Figure 4 As shown. The base station originally sends downlink synchronization signals and channel measurement signals, such as DRS, in slot 5. Suddenly, there is an uplink URLLC data packet that needs to be sent. The base station can send a common DCI information to notify all or part of the OFDM symbols in slot 5 for uplink URLLC services, and delay the DRS signal to the next slot.

[0213] For example, the sending position of the predefined random access message 1 is also some predefined time windows, that is, the system reserves certain resources for sending the uplink preamble initial access. If the base station has a downlink high-priority service to send, it can send a common DCI information to notify certain reserved resources for sending downlink high-priority data, and then the UE can access on other reserved resources within the time window, and perform channel perception measurement before access.

[0214] Embodiment 7,

[0215] This embodiment describes the case of data packet ACK / NACK.

[0216] When the transmission of uplink and downlink data packets changes dynamically, the corresponding ACK / NACK payload size may also change dynamically, and the resources and location of ACK / NACK feedback will be affected.

[0217] For example, if m bits of ACK / NACK need to be fed back at a certain time, and the ACK / NACK corresponding to the newly added downlink data packet also needs to be fed back at the same time, the number of ACK / NACK bits will increase. Or the base station will re-assign other ACK / NACK feedback times for the newly added downlink data packet.

[0218] A method for determining ACK / NACK feedback resources corresponding to downlink data includes at least one of the following:

[0219] The last OFDM symbol or the first OFDM symbol of some slots is semi-statically configured as an uplink ACK / NACK resource.

[0220] For example, a slot includes 14 OFDM symbols. The base station originally schedules m data packets continuously using k (k may be 1, 2, or 4) OFDM symbols as scheduling units, and the m data packets all need to perform ACK / NACK feedback in this slot.

[0221] When the length of the uplink control channel carrying ACK / NACK is one slot, the resource is determined by one of the following:

[0222] Method 1: The position of the ACK / NACK corresponding to the data packet or data packets is implicitly determined by the position of the DCI corresponding to the scheduled downlink data packet.

[0223] Method 2: A resource set is configured through semi-static high-level signaling of the base station, and then the specific time-frequency resources are indicated by dynamic signaling.

[0224] In addition, when the size of the ACK / NACK payload changes dynamically, the following resource determination method can be used: the high layer configures two resource locations and predefines a threshold. When the ACK / NACK payload size exceeds the threshold, it is sent using resource location 1 or the long uplink control channel PUCCH. When it is less than the threshold, it is sent using resource location 2 or the short uplink control channel PUCCH.

[0225] Embodiment 8,

[0226] This embodiment describes the situation when URLLC services and eMBB services are multiplexed and transmitted.

[0227] Assume that the base station sends downlink control information to UE1 in the first OFDM symbol of time slot 1 to schedule a downlink eMBB service to transmit data continuously in time slots 1, 2, 3 and time slot 4. Then, in time slot 2, UE2 suddenly has an uplink URLLC service that needs to be scheduled, so the base station sends DCI information to UE2 in time slot 3 to schedule the transmission of uplink URLLC data packets. At the same time, the base station removes all eMBB data packets originally intended to be sent in time slot 3, and sends a control message to UE1 in the last OFDM symbol of time slot 4 to notify that the eMBB data packet in time slot 3 is damaged. Then, after receiving this information, UE1 can perform interference elimination reception on the damaged data.

[0228] The explicit signaling indication avoids the retransmission of the entire eMBB data packet, thereby improving the spectrum efficiency.

[0229] Embodiment 9,

[0230] This embodiment describes a solution to the impact of dynamic changes in uplink and downlink on scheduling and HARQ timing.

[0231] Assume that the base station sends a downlink control information in time slot n to schedule the transmission of downlink data in four downlink time slots from time slot n+1 to time slot n+4, and the ACK / NACK of the data packet carried by each time slot corresponding to the dynamic signaling indication is fed back and transmitted in time slot n+5. Since the neighboring cell or the current cell has a high-priority uplink data to be sent in time slot n+4, in order to ensure the performance of the high-priority data packet, the base station temporarily sends a common DCI information to notify n+4 as an uplink subframe. After receiving this information, the UE managed by the base station no longer receives downlink data in time slot n+4, and the downlink data packet originally scheduled at this position does not need to feedback ACK / NACK, and the data transmission scheduled this time is not counted in the maximum number of retransmissions. If new DCI information is received within the timer, the data packet is received according to the new indicated position, and ACK / NACK is fed back at the corresponding position according to the indication information.

[0232] Embodiment 10

[0233] This embodiment illustrates the process of URLLC scheduling and data transmission.

[0234] For URLLC services, access can be based on scheduling or access without scheduling. When the initial transmission is received in error, for retransmitted data packets, in order to reduce latency, the UE still accesses without scheduling, or the UE accesses based on scheduling, and the indicated transmission timing is at the symbol level. For example, URLLC is scheduled in units of 1 OFDM symbol, and the interval between two adjacent schedulings is very small, separated by one or two OFDM symbols. The process of scheduling access can be: the base station sends a downlink DCI in the third symbol of time slot 0 to notify the UE to send the original scheduling-free access retransmission data packet in symbol 6. The resources are notified by the base station through a public DCI. After receiving the DCI, all UEs will no longer send uplink data on the resource. The resource is a resource dedicated to the scheduled retransmission data packet and will not be occupied by other UEs.

[0235] In addition, for UEs that are not scheduled, when the initial transmission is erroneous, or the UE does not receive an ACK from the base station within a predefined time, the UE can retransmit according to a predefined frequency hopping pattern. The frequency hopping pattern is separated by k OFDM symbols in the time domain, where k is less than a predefined threshold. The frequency domain position is random.

[0236] Or the UE automatically uses different orthogonal codes for each transmission.

[0237] Or the base station allocates a frequency hopping pattern for automatic retransmission during rescheduling.

[0238] The above method can meet the requirements of low-latency services.

[0239] Embodiment 11,

[0240] This embodiment describes the processing process of the method provided by the present invention being applied to the base station side.

[0241] As attached Figure 4 As shown, first, the base station determines the uplink and downlink ratio of a cell by negotiating with adjacent sites and according to its own uplink and downlink service requirements.

[0242] If cell 1 needs to send a high-priority data packet at a certain moment, the uplink and downlink attributes of the two cells at this moment are determined by the data packet. If it is an uplink data packet, the two adjacent cells at this moment are both uplink data transmission. If it is a downlink data packet, the two cells at this moment are both configured for downlink data transmission.

[0243] Combination Figure 5 The processing flow at the base station side corresponding to this embodiment is further described: when the priorities of two uplink and downlink data packets are the same, the uplink and downlink attributes at that moment are determined through competition.

[0244] Then, the base station notifies the subordinate UE of the determined uplink and downlink ratio.

[0245] The specific notification method includes high-layer signaling and / or dynamic physical layer control signaling.

[0246] Then, downlink data is sent and uplink data is received according to the uplink and downlink positions.

[0247] During this period, the base station will temporarily and dynamically adjust the uplink and downlink attributes or blank resources at a certain moment according to business needs or measured interference conditions.

[0248] Embodiment 12

[0249] This embodiment describes the processing process of the method provided by the present invention on the terminal side.

[0250] As attached Figure 6 As shown, first, the terminal receives the relevant uplink and downlink configuration information sent by the base station.

[0251] The terminal then sends or receives data according to the configuration information.

[0252] The base stations described in the present invention include base stations (Node B), evolved base stations (eNode B), home base stations (HomeNode B), relay stations (Relay Node, RN), macro base stations, micro base stations, etc.

[0253] Further, based on the above description, the present invention also provides a base station, such as Figure 7-1As shown, the base station includes:

[0254] A control unit 71, configured to determine an adjusted frame structure for each time unit within a preset duration;

[0255] The communication unit 72 is used to notify the user equipment UE of the adjusted frame structure; and transmit data according to the adjusted frame structure.

[0256] The time unit includes one of the following: a subframe, a time slot, a mini-slot, and m OFDM symbols, where m is an integer greater than or equal to 1.

[0257] A control unit, configured to notify the UE of the uplink and downlink configuration information or the frame structure, includes at least one of the following:

[0258] Indicated by physical layer signaling;

[0259] Configured through high-level signaling;

[0260] Notification via multicast signaling or system message.

[0261] A control unit is used to determine the uplink and downlink configuration by at least one of the following:

[0262] Priority of data services;

[0263] Priority of channel or signal or link;

[0264] According to the perception result of the carrier;

[0265] Coordination between neighboring communities;

[0266] UE capabilities.

[0267] The adjusted frame structure includes:

[0268] Configure a first number of slots or OFDM symbols for uplink transmission of uplink preset information; wherein the preset information includes at least one of the following: uplink ACK / NACK, SR, SRS, preamble initial access, uplink retransmission data packet;

[0269] A second number of slots or OFDM symbols are configured for downlink transmission of downlink preset information; wherein the downlink preset information includes at least one of the following: a downlink control channel, a synchronization channel, or a DRS signal.

[0270] A third number of slots or mini-slots or OFDM symbols are configured as reserved resources or as blank resources; wherein the blank resources represent resources that are at least not configured as resources for transmitting data information.

[0271] A control unit, configured to perform at least one of the following:

[0272] Configure a matching set and / or pattern, and indicate the index of the matching set and / or pattern through dynamic signaling;

[0273] Configure the size of a subframe group / time slot group, and dynamically indicate the uplink and downlink configuration of each subframe / time slot in each subframe group / time slot group.

[0274] The indication through physical layer signaling includes:

[0275] The uplink time domain position is determined by scheduling the uplink authorization information of the uplink data; the downlink time domain position is determined by scheduling the downlink authorization information of the downlink data;

[0276] A downlink control information is carried through the common search space of the downlink control channel to indicate the uplink and downlink configuration information or blank resources of the subsequent k slots or m mini-time slots.

[0277] The control unit is used to adjust the time slot n or the mini-slot within the time slot n used for downlink data transmission to uplink;

[0278] The timeslot m or the mini-slot within the timeslot m used for uplink data transmission is adjusted to downlink.

[0279] The control unit is used to perform one of the following processes:

[0280] The data originally sent in time slot n or a mini-slot within time slot n is discarded, and the terminal is indicated that the data packet is damaged, and the scheduling is not counted in the number of retransmissions; or, the data originally sent in time slot m or a mini-slot within time slot m is discarded, and the terminal is indicated that the data packet is damaged, and the scheduling is not counted in the number of retransmissions;

[0281] Sending a data packet originally to be sent in time slot n or a mini-slot within time slot n, and a data packet originally to be sent in time slot m or a mini-slot within time slot m, with reduced power or lowered MCS;

[0282] Rescheduling the data packets originally to be sent in time slot n or a mini-slot within time slot n, and the data packets originally to be sent in time slot m or a mini-slot within time slot m to other time-frequency resources;

[0283] The data packet originally to be sent in time slot n or a mini-slot within time slot n and the data packet originally to be sent in time slot m or a mini-slot within time slot m are sent on the reserved resources.

[0284] The other time-frequency resources include: a PRB position or a new time slot position or also include a codebook or orthogonal code resources.

[0285] The uplink and downlink configuration also includes:

[0286] The uplink and downlink configurations of subbands with different bandwidths are different, and when the uplink and downlink configurations of two adjacent subbands are different, a guard band is set.

[0287] The control unit is also used to

[0288] Set the preset type of signal / channel to the specified window for sending;

[0289] When a signal / channel with a priority higher than the preset type needs to be sent, the signal / channel with a priority higher than the preset type is set in the designated window for sending.

[0290] In addition, a UE is also provided, such as Figure 7-2 As shown, the UE includes:

[0291] The receiving unit 81 is configured to receive the adjusted uplink and downlink configuration information or frame structure sent by the base station;

[0292] The sending unit 82 is used to transmit data according to the adjusted uplink and downlink configuration information or frame structure.

[0293] The UE further includes:

[0294] The adjusting unit 83 is configured to determine, based on the uplink and downlink configuration information or the frame structure, that the uplink and downlink configuration information of the corresponding time unit has changed, and then perform one of the following processing on the originally scheduled data packet:

[0295] Blindly detect new scheduling information of the base station within a predefined time;

[0296] The scheduling information is scrambled by a dedicated identifier, and the scheduling information indicates that the original data packet is rescheduled to another time domain position, another frequency domain position, or another carrier;

[0297] When the rescheduling control information is not detected within a predefined time, the UE abandons sending or receiving the data, or the UE sends or receives data packets on some reserved resources.

[0298] The present invention also provides an indication system, such as Figure 7-3 As shown, the system comprises:

[0299] The base station 91 is configured to determine an adjusted frame structure for each time unit within a preset duration; notify the user equipment UE of the adjusted frame structure; and transmit data according to the adjusted frame structure;

[0300] UE92 is used to receive the adjusted uplink and downlink configuration information or frame structure sent by the base station; and perform data transmission according to the adjusted uplink and downlink configuration information or frame structure.

[0301] A base station provided by the present invention includes: a storage medium and a processor;

[0302] The storage medium includes a set of instructions that, when executed, cause at least one processor to perform operations including:

[0303] Determining an adjusted frame structure for each time unit within a preset duration;

[0304] Notifying the user equipment UE of the adjusted frame structure;

[0305] Data is transmitted according to the adjusted frame structure.

[0306] A UE provided by the present invention includes: a storage medium and a processor; the storage medium includes a group of instructions, and when the instructions are executed, at least one processor is caused to perform the following operations: receiving an adjusted frame structure sent by a base station; and transmitting data according to the adjusted frame structure.

[0307] If the integrated module described in the embodiment of the present invention is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present invention can be essentially or partly reflected in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a network device, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes. In this way, the embodiment of the present invention is not limited to any specific combination of hardware and software.

[0308] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. A data transmission method, characterized in that: The method comprises: The base station sends configuration information of the time slot group to the user equipment UE through high-layer signaling, wherein the configuration information of the time slot group indicates uplink data transmission or downlink data transmission or blank resources of the time slot group; The base station sends uplink and downlink configuration pattern information to the UE through high-layer signaling, wherein the uplink and downlink configuration pattern information includes a plurality of predetermined uplink and downlink configurations for a time slot and a plurality of pattern indexes corresponding to the plurality of predetermined uplink and downlink configurations; The base station sends a pattern index to the UE through downlink control information to indicate uplink and downlink configurations of subsequent k time slots, wherein the pattern index comes from the multiple pattern indexes included in the uplink and downlink configuration pattern information, and k is a positive integer; and The configuration information of the time slot group, the uplink and downlink configuration pattern information and the downlink control information are used for data transmission of the user equipment.

2. The method according to claim 1, characterized in that The data transmission includes: The data transmission of the subsequent k time slots is performed based on the configuration information of the time slot group, the uplink and downlink configuration pattern information and the downlink control information.

3. The method according to claim 1, characterized in that The method further comprises: Before the data transmission is performed, the uplink and downlink configuration of each time slot in the subsequent k time slots is determined based on the uplink and downlink configuration pattern information of the time slot group and the pattern index included in the downlink control information.

4. The method according to claim 1, characterized in that: The downlink control information is carried by a common search space of a downlink control channel.

5. The method according to claim 1, characterized in that The multiple predetermined uplink and downlink configurations include: uplink configuration, downlink configuration, or blank resource configuration.

6. The method according to any one of claims 1 to 5, characterized in that: The uplink and downlink configuration is determined based on at least one of the following: capability of the UE, priority of a channel or a signal or a link, priority of a data service, a result of sensing a carrier, and coordination of neighboring cells.

7. The method according to any one of claims 1 to 5, characterized in that: The method further comprises: The scheduling information encrypted by the proprietary identifier is sent to the user equipment, the scheduling information is monitored by the user equipment within a predefined time and is used to indicate a time domain position for sending a data packet.

8. The method according to any one of claims 1 to 5, characterized in that: The transmission resources used for the user equipment include at least a first part of resources, a second part of resources and a third part of resources, wherein the first part of resources is used for fixed uplink data or downlink data transmission, the second part of resources is configured by the configuration information of the time slot group, and the third part of resources is dynamically indicated by the downlink control information.

9. The method according to any one of claims 1 to 5, characterized in that: The sending of the downlink control information is based on the configuration information of the time slot group.

10. The method according to any one of claims 1 to 5, characterized in that: The time slot includes a mixed time slot, and the downlink control information is used to indicate the attribute of each symbol in the mixed time slot.

11. A data transmission method, characterized in that: The method comprises: The user equipment UE receives configuration information of the time slot group from the base station through high-layer signaling, wherein the configuration information of the time slot group indicates uplink data transmission or downlink data transmission or blank resources of the time slot group; The UE receives uplink and downlink configuration pattern information through high-layer signaling, wherein the uplink and downlink configuration pattern information includes a plurality of predetermined uplink and downlink configurations for a time slot and a plurality of pattern indexes corresponding to the plurality of predetermined uplink and downlink configurations; The UE receives a pattern index through downlink control information to indicate uplink and downlink configurations of subsequent k time slots, wherein the pattern index comes from the multiple pattern indexes included in the uplink and downlink configuration pattern information, and k is a positive integer; and The UE performs data transmission based on the configuration information of the time slot group, the uplink and downlink configuration pattern information and the downlink control information.

12. The method according to claim 11, characterized in that The data transmission further comprises: The data transmission of the subsequent k time slots is performed based on the configuration information of the time slot group, the uplink and downlink configuration pattern information and the downlink control information.

13. The method according to claim 11, characterized in that The method further comprises: Before performing the data transmission, the uplink and downlink configuration of each time slot in the subsequent k time slots is determined based on the uplink and downlink configuration pattern information of the time slot group and the pattern index included in the downlink control information.

14. The method according to claim 11, characterized in that The downlink control information is carried by a common search space of a downlink control channel.

15. The method according to claim 11, characterized in that The multiple predetermined uplink and downlink configurations include: uplink configuration, downlink configuration, or blank resource configuration.

16. The method according to any one of claims 11 to 15, characterized in that: The uplink and downlink configuration is determined based on at least one of the following: capability of the UE, priority of a channel or a signal or a link, priority of a data service, a result of sensing a carrier, and coordination of neighboring cells.

17. The method according to any one of claims 11 to 15, characterized in that: The method further comprises: The scheduling information encrypted by the proprietary identifier is monitored within a predefined time, wherein the scheduling information is used to indicate the time domain position of sending a data packet.

18. The method according to any one of claims 11 to 15, characterized in that: The method further comprises: The transmission resources used for the user equipment include at least a first part of resources, a second part of resources and a third part of resources, wherein the first part of resources is used for fixed uplink data or downlink data transmission, the second part of resources is configured by the configuration information of the time slot group, and the third part of resources is dynamically indicated by the downlink control information.

19. The method according to any one of claims 11 to 15, characterized in that: The receiving of the downlink control information is based on the configuration information of the time slot group.

20. The method according to any one of claims 11 to 15, characterized in that: The time slot includes a mixed time slot, and the downlink control information is used to indicate the attribute of each symbol in the mixed time slot.

21. A data processing device, comprising a processor, characterized in that: The processor is configured to execute the data transmission method according to any one of claims 1 to 10.

22. A user equipment, comprising a processor, characterized in that: The processor is configured to execute the data transmission method according to any one of claims 1 to 10.

23. A computer-readable storage medium comprising instructions, characterized in that: The instructions are used to enable a computer device to execute the data transmission method according to any one of claims 1 to 10.

24. A data transmission device, comprising a processor, characterized in that: The processor is configured to execute the data transmission method according to any one of claims 11 to 20.

25. A base station, comprising a processor, characterized in that: The processor is configured to execute the data transmission method according to any one of claims 11 to 20.

26. A computer-readable storage medium comprising instructions, characterized in that: The instructions are used to enable a computer device to execute the data transmission method according to any one of claims 11 to 20.

Images