WO2014000689A1

WO2014000689A1 - Transmission feedback method and device for tdd uplink and downlink configuration

Info

Publication number: WO2014000689A1
Application number: PCT/CN2013/078372
Authority: WO
Inventors: 徐婧; 潘学明; 鲍炜; 沈祖康
Original assignee: 电信科学技术研究院
Priority date: 2012-06-29
Filing date: 2013-06-28
Publication date: 2014-01-03
Also published as: CN103516490A

Abstract

This application relates to the field of communications. Disclosed is a transmission feedback method for TDD uplink and downlink configuration. The method comprises: a base station allocating the latest TDD uplink and downlink configuration for a terminal; the terminal feeding back receiving situation of the newly allocated TDD uplink and downlink configuration to the base station; the base station and the terminal both selecting, with reference to the receiving situation, suitable TDD uplink and downlink configuration to control uplink and downlink transmission in a subsequent procedure. Therefore, the situation that the base station side and the terminal side have inconsistent understanding on the TDD uplink and downlink configuration does not exist, the generation of a fuzzy period is avoided, so that the base station and the terminal can control uplink and downlink transmission according to the consistent TDD uplink and downlink configuration, thereby effectively ensuring the quality of service of the system, and improving the system performance.

Description

Transmission request method and device for TDD uplink and downlink configuration. The present application claims to be filed on June 29, 2012 in Chinese Patent Application No. 201210226753.5, entitled "Transmission Feedback Method and Device for TDD Uplink and Downlink Configuration" Priority is hereby incorporated by reference in its entirety. Technical field

The present invention relates to the field of communications, and in particular, to a transmission feedback method and apparatus for TDD uplink and downlink configuration.

Background technique

Referring to FIG. 1 , for the basic duplex mode adopted by the cellular system: Time division duplex (TDD) mode refers to that the uplink and downlink use the same working frequency band, and uplink and downlink signals are used at different times. Transmission, there is a guard interval (GP) between the uplink and the downlink;

The Frequency Division Duplex (FDD) mode refers to the use of different working frequency bands on the uplink and downlink. It can transmit uplink and downlink signals on different frequency carriers at the same time, with protection bandwidth between uplink and downlink. Guard Band, GB).

Long Term Evolution (LTE) The frame structure of the TDD system is slightly more complicated. As shown in FIG. 2, a radio frame has a length of 10 ms, and includes 10 subframes in a special subframe and a regular subframe, and each subframe is lms. The special subframe is divided into three slots: a downlink pilot slot (DwPTS), a GP, and an uplink pilot slot (UpPTS). The regular subframe includes an uplink subframe and a downlink subframe, and is used for transmitting uplink/downlink control signaling and service data. Among them, in one radio frame, two special subframes (usually located in subframe #1 and subframe #6) or a special subframe (usually located in subframe #1) can be configured. Subframe #0 and subframe #5 and the DwPTS in the special subframe are always used for downlink transmission, and the UpPTS in subframe #2 and special subframe is always used for uplink transmission, and other subframes can be flexibly configured as needed. For uplink transmission or downlink transmission.

In the TD-SCDMA Long Term Evolution (TD-LTE) system, the sum of the three time slots of DwPTS/GP/UpPTS in the special subframe is lms, and the three slot lengths support different. The configuration of the table, as shown in Table 1, the length of time in the table is T _s , 1 ; = 1 / (15000x2048) seconds.

TDD uplink and downlink configuration short CP extension CP

No. DwPTS GP DwPTS GP UpPTS

UpPTS

0 6592 - r _s 21936.7; 2192 7680.7; 20480.7; 2560

1 19760 - 7; 8768- 7; 20480.7; 7680.7;

Table 1 (Configuration format of TD-LTE special subframe)

The uplink and downlink subframe allocation in TD-LTE supports seven different TDD uplink and downlink configuration modes. The specific configuration parameters are as shown in Table 2 below, where D is used for downlink transmission, U is used for uplink transmission, and S is for the subframe. It is a special sub-frame containing three parts: DwPTS, GP and UpPTS.

(LTE TDD uplink and downlink subframe configuration format)

The special subframe configuration and the uplink and downlink subframe allocation mode are broadcasted to all users in the cell through system information (SI).

In the prior art, an existing uplink and downlink subframe configuration scheme is as follows:

In a certain period of time, four seed frame types are set, including a subframe fixed for downlink transmission, a subframe fixed for uplink transmission, and a subframe flexibly allocated for uplink transmission or downlink transmission. Referring to FIG. 3, a time period is set to one radio frame (only one example, and possibly other time periods), where subframe #0 and subframe #5 are fixed downlink subframes, subframe #2 and subframes. #7 is a fixed uplink subframe, subframes #1 and #6 are special subframes (which can also be classified as fixed downlink subframes), and other subframes (such as subframe #3, subframe #4, subframe #8) And subframe #9) is a subframe that is flexibly allocated for uplink transmission or downlink transmission. For the last type of subframe, the base station can enter according to real-time service requirements and channel conditions. Dynamic configuration to adapt to dynamic changes in business needs.

The configuration scheme of the special subframe and the uplink and downlink subframes is usually sent to the user by using broadcast information. Currently, the broadcast information includes a Master Information Block (MIB) and a System Information Block (SIB), and the SIB can be recorded as SIBi (i=l, 2, 3, ... N), wherein The TDD uplink and downlink configuration is sent in SIB1. The transmission period of SIB1 is fixed at 80ms, and the same content is retransmitted every 20ms in one cycle. The transmission of SIB1 is fixed in subframe #5 of the even-numbered radio frame, and the radio frame located in the system frame number (SFN) mod8=0 is transmitted for the first time, as shown in FIG.

Currently, in common TDD systems, such as 3G TD-SCDMA systems and 4G TD-LTE systems, the configuration of uplink special subframes and uplink and downlink subframes is static or semi-static, and the usual practice is in network planning. In the process, various sub-frame ratios are determined and remain unchanged according to the cell type and the approximate service ratio. 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 cells and Home NodeBs are deployed to provide local small coverage. In this type of cell, the number of users is small, and the user service demand changes greatly. Therefore, the ratio of the uplink and downlink services of the cell needs to be dynamically changed. In this case, the network side needs to set the TDD uplink and downlink configuration in a semi-static manner. The system information that carries the TDD uplink and downlink configuration changes frequently. However, because the processing capabilities of different terminals are different, the actual processing delay required is different. Therefore, when the system resets the TDD uplink and downlink configuration to notify each terminal through system information, the base station cannot determine each terminal separately. When it starts to work according to the new TDD uplink and downlink configuration, the base station and the terminal have inconsistent understanding of the TDD uplink and downlink configuration, that is, there is a blur period. If the uplink and downlink transmissions are performed in the ambiguous period, the hybrid automatic repeat reQuest (HQQ) timing relationship defined by the base station and the terminal side is inconsistent, and the base station and the terminal cannot receive data and feedback.

Under the prior art, the most direct solution adopted for the above technical problem is that the base station does not schedule the terminal during the fuzzy period, and usually the blur period is about 80 ms. The change period of the TDD uplink and downlink configuration is relatively short (for example, the maximum uplink and downlink change period currently considered is 640 ms), which causes a large amount of resource waste. For example, when the change period of the TDD uplink and downlink configuration is 640 ms and the ambiguity period is 80 ms, every 640 ms, the base station will not schedule the terminal within the next 80 ms, which will cause serious waste of resources, according to the degree of waste of statistical resources. At around 12.5%; and with the shortening of the TDD uplink and downlink configuration change cycle, the waste of resources will become increasingly serious. Summary of the invention

The embodiment of the invention provides a transmission feedback method and device for TDD uplink and downlink configuration, so as to avoid waste of system resources due to changes in the uplink and downlink configuration of the TDD.

The specific technical solutions provided by the embodiments of the present invention are as follows:

A transmission feedback method for TDD uplink and downlink configuration includes: Determining, by the base station, a newly allocated TDD uplink and downlink configuration of the terminal, and notifying the terminal of the newly allocated TDD uplink and downlink configuration;

The base station controls the uplink and downlink transmission by using the corresponding TDD uplink and downlink configuration according to the received situation of the newly allocated TDD uplink and downlink configuration fed back by the terminal.

A transmission feedback method for a TDD uplink and downlink configuration includes:

Receiving, by the terminal, the newly allocated TDD uplink and downlink configuration of the base station, and feeding back, to the base station, the receiving condition of the newly allocated TDD uplink and downlink configuration;

The terminal controls the uplink and downlink transmission by using the corresponding TDD uplink and downlink configuration according to the received situation of the newly allocated TDD uplink and downlink configuration.

A transmission feedback device for TDD uplink and downlink configuration, comprising:

a first processing unit, configured to determine a newly allocated TDD uplink and downlink configuration for the terminal, and notify the terminal of the newly allocated TDD uplink and downlink configuration;

The second processing unit is configured to control the uplink and downlink transmission by using the corresponding TDD uplink and downlink configuration according to the received situation of the newly allocated TDD uplink and downlink configuration fed back by the terminal.

a communication unit, configured to receive a newly allocated TDD uplink and downlink configuration of the base station, and feed back, to the base station, a received condition of the newly allocated TDD uplink and downlink configuration;

The control unit is configured to control uplink and downlink transmissions according to the received TDD uplink and downlink configuration according to the newly allocated TDD uplink and downlink configuration.

A base station comprising:

a first signal transmission device, configured to determine a newly allocated TDD uplink and downlink configuration for the terminal, and notify the terminal of the newly allocated TDD uplink and downlink configuration;

The first processor is configured to control uplink and downlink transmission by using a corresponding TDD uplink and downlink configuration according to the received situation of the newly allocated TDD uplink and downlink configuration fed back by the terminal.

A terminal, comprising:

a second signal transmission device, configured to receive a newly allocated TDD uplink and downlink configuration of the base station, and feed back, to the base station, the reception status of the newly allocated TDD uplink and downlink configuration;

The second processor is configured to control the uplink and downlink transmissions according to the received TDD uplink and downlink configuration according to the newly allocated TDD uplink and downlink configuration.

In the embodiment of the present invention, after the base station allocates the latest TDD uplink and downlink configuration to the terminal, the terminal feeds back the received situation of the newly allocated TDD uplink and downlink configuration to the base station, and the base station and the terminal both refer to the receiving situation, and select an appropriate TDD uplink and downlink configuration. In the subsequent process, the uplink and downlink transmissions are controlled, so that there is no inconsistency between the base station side and the terminal side in understanding the TDD uplink and downlink configuration, and the blur period is avoided, so that the base station and the terminal can follow the consistent TDD. The downlink configuration controls uplink and downlink transmission, which effectively guarantees the system's service quality and improves system performance. BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a schematic diagram showing a time-frequency relationship of a basic duplex mode in the prior art;

2 is a schematic diagram of a frame structure of a TD-LTE system in the prior art;

3 is a schematic diagram of a dynamic uplink and downlink subframe allocation scheme in the prior art;

4 is a schematic diagram of a SIB1 transmission diagram in the prior art;

5A is a schematic structural diagram of a base station according to an embodiment of the present invention;

5B is a schematic structural diagram of a base station entity according to an embodiment of the present invention;

6A is a schematic structural diagram of a function of a terminal according to an embodiment of the present invention;

6B is a schematic structural diagram of a terminal entity according to an embodiment of the present invention;

7 is a flowchart of setting a TDD uplink and downlink configuration by a base station according to an embodiment of the present invention;

FIG. 8 is a flowchart of a TDD uplink and downlink configuration used by a terminal according to an embodiment of the present invention. In a TDD system, in order to avoid system waste and improve system performance, in the embodiment of the present invention, after the base station allocates the latest TDD uplink and downlink configuration for the terminal, the terminal feeds back the newly allocated TDD uplink and downlink configuration to the base station. For the receiving situation, both the base station and the terminal refer to the receiving situation, and select an appropriate TDD uplink and downlink configuration to control the uplink and downlink transmission in the subsequent process.

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Referring to FIG. 5A, in the embodiment of the present invention, the base station includes a first processing unit 50 and a second processing unit 51, where

The first processing unit 50 is configured to determine a newly allocated TDD uplink and downlink configuration for the terminal, and notify the terminal of the newly allocated TDD uplink and downlink configuration;

The second processing unit 51 is configured to control uplink and downlink transmission by using a corresponding TDD uplink and downlink configuration according to the received situation of the newly allocated TDD uplink and downlink configuration fed back by the terminal.

Further, the first processing unit 50 receives, by using the physical layer signaling or the high layer signaling, the receiving condition of the newly allocated TDD uplink and downlink configuration fed back by the terminal.

Further, the first processing unit 50 is specifically configured to:

The correct response ACK indicating that the newly allocated TDD uplink and downlink configuration is correctly received by the receiving terminal is received by the physical layer signaling that is sent by the physical uplink control channel PUCCH; or

The error signal indicating that the newly allocated TDD uplink and downlink configuration is correctly received or the error response indicating that the newly allocated TDD uplink and downlink configuration is not correctly received is received by the receiving terminal to transmit the physical layer signaling sent on the PUCCH. NACKo

Further, the first processing unit 50 is specifically configured to:

Receiving, by the media access control MAC signaling or the radio resource control RRC signaling, the ACK of the uplink and downlink configuration of the newly allocated TDD received by the receiving terminal; or

By means of the MAC signaling or the RRC signaling, the ACK indicating that the newly allocated TDD uplink and downlink configuration is correctly received or the NACK indicating that the newly allocated TDD uplink and downlink configuration is not correctly received is received by the receiving terminal; or

The identifier of the TDD uplink and downlink configuration currently used by the terminal fed back by the terminal is received by the MAC signaling or the RRC signaling.

Further, after receiving, by the high-layer signaling, the first processing unit 50 receives the received situation of the newly allocated TDD uplink and downlink configuration that is fed back by the terminal, the acquiring unit further acquires the newly allocated TDD in the high-layer signaling. Time information of the uplink and downlink configuration.

Further, the second processing unit 51 is specifically configured to:

If it is determined that the terminal has correctly received the newly allocated TDD uplink and downlink configuration according to the feedback of the terminal, the newly allocated TDD uplink and downlink configuration is used to control subsequent uplink and downlink transmissions;

If the terminal does not correctly receive the newly allocated TDD uplink and downlink configuration according to the feedback of the terminal, the current TDD uplink and downlink configuration is used to control the subsequent uplink and downlink transmission.

Specifically, the first processing unit 50 may be a signal transmission device including a transceiver antenna, and the second processing unit 51 may be a processor. In this case, as shown in FIG. 5B, the base station in the embodiment of the present invention includes a first signal transmission device. 500 and a first processor 510, wherein

The first signal transmission device 500 is configured to determine a newly allocated TDD uplink and downlink configuration for the terminal, and notify the terminal of the newly allocated TDD uplink and downlink configuration;

The first processor 510 is configured to control uplink and downlink transmissions according to the received condition of the newly allocated TDD uplink and downlink configuration fed back by the terminal, and adopt corresponding TDD uplink and downlink configurations.

Further, the first signal transmission device 500 receives the reception status of the newly allocated TDD uplink and downlink configuration fed back by the terminal through physical layer signaling or high layer signaling.

Further, the first signal transmission device 500 is specifically configured to:

By receiving the physical layer signaling sent on the PUCCH, the receiving terminal feedbacks the ACK indicating that the newly allocated TDD uplink and downlink configuration is correctly received or the error response indicating that the newly allocated TDD uplink and downlink configuration is not correctly received.

The RRC signaling is controlled by the medium access control MAC signaling or the radio resource, and the representation of the receiving terminal is correctly connected. Receiving the ACK of the newly allocated TDD uplink and downlink configuration; or

Further, the first signal transmission device 500 receives the received situation of the newly allocated TDD uplink and downlink configuration fed back by the terminal through the high layer signaling, and further acquires, in the high layer signaling, the terminal to receive the newly allocated Time information of the TDD uplink and downlink configuration.

Further, the first processor 510 is specifically configured to:

Referring to FIG. 6A, in the embodiment of the present invention, the terminal includes a communication unit 60 and a control unit 61, where the communication unit 60 is configured to receive a newly allocated TDD uplink and downlink configuration of the base station, and feed back the newly allocated TDD to the base station. The receiving status of the uplink and downlink configuration;

The control unit 61 is configured to control the uplink and downlink transmission according to the received situation of the newly allocated TDD uplink and downlink configuration, and use the corresponding TDD uplink and downlink configuration.

Further, the communication unit 60 feeds back, to the base station, the reception status of the newly allocated TDD uplink and downlink configuration through physical layer signaling or higher layer signaling.

Further, the communication unit 60 is specifically configured to:

The correct response ACK indicating that the newly allocated TDD uplink and downlink configuration is correctly received is fed back to the base station by using physical layer signaling that is sent on the physical uplink control channel PUCCH, or

The ACK of the TDD uplink and downlink configuration that correctly receives the newly allocated TDD or the error response NACK indicating that the newly allocated TDD uplink and downlink configuration is not correctly received is fed back to the base station by the physical house signaling transmitted on the PUCCH.

Further, the communication unit 60 is specifically configured to:

Receiving, by the medium access control MAC signaling or the radio resource control RRC signaling, an ACK indicating that the newly allocated TDD uplink and downlink configuration is correctly received; or

The MAC address or the RRC signaling is used to feed back the ACK indicating that the newly allocated TDD uplink and downlink configuration is correctly received or the NACK indicating that the newly allocated TDD uplink and downlink configuration is not correctly received; or

The identifier of the TDD uplink and downlink configuration currently used by the terminal is fed back to the base station by using MAC signaling or RRC signaling. Further, the communication unit 60 further carries the time information of the newly allocated TDD uplink and downlink configuration in the high layer signaling, while the high layer signaling carries the newly allocated TDD uplink and downlink configuration. Further, the control unit 61 is specifically configured to:

If the newly allocated TDD uplink and downlink configuration is correctly received, the newly allocated TDD uplink and downlink configuration is used to control subsequent uplink and downlink transmissions;

If the newly allocated TDD uplink and downlink configuration is not correctly received, continue to use the currently used TDD uplink and downlink configuration to control subsequent uplink and downlink transmissions.

Specifically, the communication unit 60 may be a signal transmission device including a transceiver antenna, and the control unit 61 may be a processor. Referring to FIG. 6B, the terminal in the embodiment of the present invention includes a second signal transmission device 600 and a second processor 610. , among them,

The second signal transmission device 600 is configured to receive a newly allocated TDD uplink and downlink configuration of the base station, and feed back, to the base station, the received condition of the newly allocated TDD uplink and downlink configuration;

The second processor 610 is configured to control uplink and downlink transmissions according to the received TDD uplink and downlink configuration of the newly allocated TDD uplink and downlink configuration.

Further, the second signal transmission device 600 feeds back the reception status of the newly allocated TDD uplink and downlink configuration to the base station by using physical layer signaling or higher layer signaling.

Further, the second signal transmission device 600 is specifically configured to:

The ACK corresponding to the newly allocated TDD uplink and downlink configuration or the error response NACK indicating that the newly allocated TDD uplink and downlink configuration is not correctly received is fed back to the base station by the physical layer signaling carried on the PUCCH.

The identifier of the TDD uplink and downlink configuration currently used by the terminal is fed back to the base station through the MAC signaling or the RRC signaling. Further, the second signal transmission device 600 carries the newly allocated TDD uplink and downlink configuration time in the high layer signaling, and further carries the newly allocated TDD uplink and downlink configuration time in the high layer signaling. information.

Further, the second processor 610 is specifically configured to:

If the newly allocated TDD uplink and downlink configuration is not correctly received, continue to use the currently used TDD uplink and downlink configuration to control subsequent uplink and downlink transmissions. As shown in FIG. 7 , in the embodiment of the present invention, the detailed process of setting the TDD uplink and downlink configuration for the terminal by the base station is as follows: Step 700: The base station determines the newly allocated TDD uplink and downlink configuration for the terminal, and notifies the terminal of the TDD uplink and downlink configuration.

In the embodiment of the present invention, the network environment is constantly changing. Therefore, the base station dynamically allocates the TDD uplink and downlink configuration to the terminal according to the actual application environment. For example, the terminal allocates the TDD uplink and downlink with the time of 640ms, 320ms, and the like. Configuration.

Generally, the base station can carry the newly allocated TDD uplink and downlink configuration on the Physical Downlink Shared Channel (PDSCH), and send the system information to the terminal.

Step 710: The base station controls uplink and downlink transmission according to the received situation of the newly allocated TDD uplink and downlink configuration fed back by the terminal, and adopts corresponding TDD uplink and downlink configuration.

Specifically, when the base station determines that the terminal correctly receives the newly allocated TDD uplink and downlink configuration according to the feedback of the terminal, the newly allocated TDD uplink and downlink configuration is used to control the uplink and downlink transmission in the subsequent process until the next time the new TDD uplink and downlink configuration is allocated. Then, when the base station determines that the terminal does not correctly receive the newly allocated TDD uplink and downlink configuration according to the feedback of the terminal, the base station continues to control the uplink and downlink transmission in the subsequent process by using the currently used TDD uplink and downlink configuration, until the terminal feedback has correctly received the newly allocated TDD. The uplink and downlink configuration, where the so-called control uplink and downlink transmission includes: the base station adopts a newly allocated or currently used TDD uplink and downlink configuration, and schedules corresponding uplink and downlink resources for each subframe, and configures HARQ between each subframe. Feedback timing relationship.

In this embodiment, when performing step 710, the base station may use the physical layer signaling or the high layer signaling to receive the received condition of the newly allocated TDD uplink and downlink configuration fed back by the terminal.

A. Take physical layer signaling as an example.

The physical layer signaling is usually carried on the Physical Uplink Control CHannel (PUCCH). The base station can receive the correct response (ACK) fed back by the terminal through physical layer signaling, or receive feedback from the terminal through physical layer signaling. ACK or error response (NACK), where, in the former case, the terminal only feeds back the ACK to the base station when the newly allocated TDD uplink and downlink configuration is correctly received. Therefore, if the base station does not receive the ACK fed back by the base station, The default terminal does not correctly receive the newly allocated TDD uplink and downlink configuration. In the latter case, if the base station receives the ACK fed back by the terminal, it determines that the terminal has correctly received the newly allocated TDD uplink and downlink configuration. The NACK determines that the terminal does not correctly receive the newly allocated TDD uplink and downlink configuration. This is the case in subsequent embodiments and will not be described again.

Certainly, the HARQ timing relationship between the subframe k used by the base station to transmit the newly allocated TDD uplink and downlink configuration and the subframe n used to receive the bearer feedback information may be pre-agreed by the base station and the terminal, or , configured by the base station to the terminal.

B. Take high-level signaling as an example.

The higher layer signaling used by the base station may be Medium Access Control (MAC) signaling, It may be Radio Resource Control (RRC) signaling. The base station may receive the ACK fed back by the terminal through the MAC signaling or the RRC signaling; or may receive the ACK or the NACK fed back by the terminal through the MAC signaling or the RRC signaling; or may also pass the MAC signaling or the RRC signaling. The identifier of the TDD uplink and downlink configuration currently used by the terminal that is received by the terminal (for example, the sequence number of the TDD downlink configuration), wherein, in the last case, if the terminal feeds back the sequence number of the newly allocated TDD uplink and downlink configuration, The terminal has correctly received the newly allocated TDD uplink and downlink configuration. If the terminal feeds back the sequence number of the currently used TDD uplink and downlink configuration, the terminal does not correctly receive the newly allocated TDD uplink and downlink configuration.

Further, the base station may further obtain, in the MAC signaling or the RCC signaling, the time information that the terminal receives the newly allocated TDD uplink and downlink configuration, and according to the time information, the base station and the terminal may synchronously and accurately know from which time the time should be adopted. The newly allocated TDD uplink and downlink configuration controls uplink and downlink transmission to avoid a blur period.

Based on the foregoing embodiment, correspondingly, referring to FIG. 8, in the embodiment of the present invention, the detailed process of using the TDD uplink and downlink configuration by the terminal according to the indication of the base station is as follows:

Step 800: The terminal receives the newly allocated TDD uplink and downlink configuration of the base station, and feeds back, to the base station, the received status of the newly allocated TDD uplink and downlink configuration.

In the embodiment of the present invention, the network environment is constantly changing. Therefore, the base station dynamically allocates the TDD uplink and downlink configuration to the terminal according to the actual application environment. For example, the terminal allocates the TDD uplink and downlink with the time of 640ms, 320ms, and the like. Configuration. Generally, the terminal can receive the TDD uplink and downlink configuration sent by the base station by using system information carried on the PDSCH.

In this embodiment, when performing step 800, the terminal may use the physical layer signaling or the high layer signaling to feed back the received situation of the newly allocated TDD uplink and downlink configuration to the base station.

A. Take physical layer signaling as an example.

The physical house signaling is usually carried on the PUCCH. The terminal can feed back the feedback ACK to the base station through physical layer signaling, or feed back the ACK or NACK to the base station through physical layer signaling.

Certainly, the HARQ timing relationship between the subframe k used by the terminal to receive the newly allocated TDD uplink and downlink configuration and the subframe n used for transmitting the bearer feedback information may be pre-agreed by the base station and the terminal, or , configured by the base station to the terminal.

B. Take high-level signaling as an example.

The high layer signaling used by the terminal may be MAC signaling or RRC signaling. The terminal may feed back the ACK to the base station by using the MAC signaling or the RC signaling. Alternatively, the terminal may feed back the ACK or the NACK to the base station through the MAC signaling or the RRC signaling. Alternatively, the terminal may also send the ACK or the RRC signaling to the base station. The identifier of the TDD uplink and downlink configuration currently used by the feedback terminal (for example, the serial number of the TDD downlink configuration).

Further, the terminal may further carry time information for receiving the newly allocated TDD uplink and downlink configuration in the MAC signaling or the RCC signaling, according to the time information, the base station and the terminal may synchronously and accurately know which time should be taken from. The uplink and downlink transmissions are controlled by the newly allocated TDD uplink and downlink configuration to avoid the ambiguity period.

Step 810: The terminal controls the uplink and downlink transmission by using the corresponding TDD uplink and downlink configuration according to the received situation of the newly allocated TDD uplink and downlink configuration.

Specifically, when the terminal correctly receives the newly allocated TDD uplink and downlink configuration, the newly allocated TDD uplink and downlink configuration controls the uplink and downlink transmission in the subsequent process until the next time the base station allocates a new TDD uplink and downlink configuration, and the terminal determines that the terminal is not When the newly allocated TDD uplink and downlink configuration is correctly received, the current TDD uplink and downlink configuration is used to control the uplink and downlink transmission in the subsequent process, until the terminal correctly receives the newly allocated TDD uplink and downlink configuration (the base station repeats the delivery), where The so-called control uplink and downlink transmission includes: the base station adopts a newly allocated or currently used TDD uplink and downlink configuration, schedules corresponding uplink and downlink resources for each subframe, and configures a HARQ feedback timing relationship between the subframes.

The above embodiment is further described in detail below by taking thousands of specific application scenarios as an example.

Scenario 1: The terminal uses RC signaling to feedback whether the newly allocated TDD uplink and downlink configuration is correctly received.

After the terminal correctly receives the latest TDD uplink and downlink configuration of the base station, (for example, the TDD uplink and downlink configuration bearer is in SIB1), an RRC signaling S1 is generated, and S1 only contains 1-bit information, indicating that the terminal has correctly received the TDD uplink and downlink configuration. The SI may be a new RRC message, or may reuse the currently existing RRC message and add corresponding field parameters.

The terminal sends the data carrying the SI to the base station in the corresponding subframe, where the corresponding subframe also refers to the available uplink subframe, which has two meanings: generally refers to the same in the fixed uplink subframe or the new and old TDD uplink and downlink configurations. Uplink subframe. The terminal should feed back the SI as early as possible. Preferably, the SI is usually fed back on the most recent available uplink subframe.

The terminal follows the old TDD uplink and downlink configuration and then follows the new TDD uplink and downlink configuration before receiving the system message (for example, SIB1) of the newly allocated TDD uplink and downlink configuration.

Scenario 2: The terminal uses R C signaling to feed back the TDD uplink and downlink configuration currently used by the terminal.

After the terminal correctly receives the latest TDD uplink and downlink configuration of the base station, (for example, the TDD uplink and downlink configuration bearer is in SIB1), an RRC signaling S1 is generated, and S1 only contains 3-bit information, indicating that the terminal currently uses the TDD uplink and downlink configuration. The SI may be a new RRC message, or may reuse the currently existing RRC message and add corresponding field parameters.

Scenario 3: The terminal adopts R C signaling feedback. The TDD uplink and downlink configuration is correctly received and received.

After the terminal correctly receives the newly allocated TDD uplink and downlink configuration of the base station, (for example, the TDD uplink and downlink configuration is carried in In SIB1, an RRC signaling S1 is generated, and the SI includes two contents, which respectively indicate that the terminal has correctly received the TDD uplink and downlink configuration and the correct reception time; wherein, the correctly received time may refer to the subframe number, and may also refer to the radio frame. The number may also be a combination of the two; the SI may be a new RRC message, or may reuse the currently existing RRC message and add corresponding field parameters.

Scenario 4: The terminal uses the RRC signaling to feed back the TDD uplink and downlink configuration and the receiving time currently used by the terminal. After the terminal correctly receives the latest TDD uplink and downlink configuration of the base station, (for example, the TDD uplink and downlink configuration bearer is in SIB1), an RRC signaling SI is generated, and S1 includes two contents, which respectively indicate the TDD uplink and downlink configuration currently used by the terminal. And the time of correct reception; wherein, the time of correct reception may refer to a subframe number, a radio frame number, or a combination of the two, and the SI may be a new RRC message, or may reuse the current Some RRC messages and new corresponding field parameters.

Scenario 5: Feedback from the MAC signaling The TDD uplink and downlink configuration is correctly received.

After the terminal correctly receives the latest allocated TDD uplink and downlink configuration (for example, the TDD uplink and downlink configuration bearer is in SIB1), a MAC signaling is generated, and the MAC signaling may only contain one bit of information, indicating that the terminal has correctly received the TDD. In the line configuration, the MAC signaling may be a new MAC message, or the existing MAC message may be reused and the corresponding field parameters may be added.

The terminal sends the data carrying the MSC signaling to the base station in the corresponding subframe, where the corresponding subframe also refers to an available uplink subframe, which has two meanings: usually refers to a fixed uplink subframe or a new and old TDD uplink and downlink configuration. The same uplink subframe. The terminal should feed back the MAC signaling as early as possible. Preferably, the MAC signaling is usually fed back on the most recent available uplink subframe.

Scenario 6: The terminal uses MAC signaling to feed back the TDD uplink and downlink configuration currently used by the terminal.

After the terminal correctly receives the newly allocated TDD uplink and downlink configuration of the base station, (for example, the TDD uplink and downlink configuration is carried in In the SIB1), a MAC signaling is generated, and the MAC signaling may only include 3 bits of information, indicating the TDD uplink and downlink configuration currently used by the terminal, and the MAC signaling may be a new MAC message, or may reuse the current Some MAC messages are added with corresponding field parameters.

The terminal sends the data carrying the MAC signaling to the base station in the corresponding subframe, where the corresponding subframe also refers to the available uplink subframe, which has two meanings: usually refers to a fixed uplink subframe or a new and old TDD uplink and downlink configuration. The same uplink subframe. The terminal should feed back the MAC signaling as early as possible. Preferably, the MAC signaling is usually fed back on the most recent available uplink subframe.

Scenario 7: The terminal adopts MAC signaling feedback. The TDD uplink and downlink configuration is correctly received and received.

After the terminal correctly receives the latest TDD uplink and downlink configuration of the base station, (for example, the TDD uplink and downlink configuration bearer is in SIB1), a MAC signaling is generated, and the MAC CE includes two contents, respectively indicating that the terminal has correctly received the TDD uplink and downlink. The time of configuration and correct reception; wherein, the time of correct reception may refer to a subframe number, a radio frame number, or a combination of the two; the MAC signaling may be a new MAC message, or Reuse the existing MAC message and add the corresponding field parameters.

Scenario 8: The terminal uses MAC signaling to feed back the TDD uplink and downlink configuration and reception time currently used by the terminal. After the terminal correctly receives the latest TDD uplink and downlink configuration of the base station (for example, the TDD uplink and downlink configuration bearer is in SIB1), a MAC signaling is generated, where the MAC signaling includes two contents, which respectively indicate the TDD currently used by the terminal. The time of the line configuration and the correct reception; wherein, the time of correct reception may refer to the subframe number, the wireless frame number, or a combination of the two; the MAC signaling may be a new MAC message, or It is also possible to reuse the currently existing MAC message and add corresponding parameters.

The terminal follows the old TDD uplink and downlink configuration and then follows the new TDD uplink and downlink configuration before receiving the system message (for example, SIB1) of the newly allocated TDD uplink and downlink configuration. Scenario 9: The terminal feeds back the TDD uplink and downlink configuration correctly through the PUCCH (that is, adopts physical layer signaling), and the HARQ timing relationship between the transmission and the feedback is agreed by the protocol.

Only after the terminal receives the TDD uplink and downlink configuration correctly (for example, the TDD uplink and downlink configuration bearer is in SIB1), the terminal will use the physical layer signaling to feed back the ACK through the PUCCH. The terminal correctly receives the TDD uplink and downlink configuration, which may be The physical layer receives correctly, and the RRC layer can correctly receive the former. The former refers to the physical layer to directly feedback when it receives correctly, and the latter refers to the physical layer feedback triggered by the RRC layer after the RRC layer receives the correct one.

The feedback subframe (denoted as subframe n) and the correctly received subframe in which the TDD uplink and downlink configuration is located (denoted as subframe k) satisfy the determined HARQ timing relationship, which is agreed by the protocol.

For example, n=k+7, or n=k+17, or n=k+12. Wherein, n=k+7 does not consider the process of the RRC signaling analysis by the terminal. Therefore, when the base station receives the physical layer signaling carrying the feedback information at the corresponding location of the PUCCH, the base station needs to consider a delay. The newly allocated TDD uplink and downlink configuration takes effect. n=k+17 or n=k+12 considers the time required for the terminal to perform RRC signaling analysis. Therefore, when the base station receives the physical layer signaling carrying the feedback signaling at the corresponding location of the PUCCH, the base station may consider that the terminal has Adopted the newly allocated TDD uplink and downlink configuration.

The PUCCH resource carrying the above-mentioned physical layer signaling is configured by the base station to the terminal through the high-layer signaling. Before the PUCCH resource is configured, the terminal does not need to feedback the TDD uplink and downlink configuration to receive correctly.

Generally, once the terminal correctly receives the newly allocated TDD uplink and downlink configuration, it does not continue to detect the TDD uplink and downlink configuration. Therefore, the terminal only needs to feed back once during the TDD uplink and downlink configuration change period, that is, only the first time after receiving the TDD uplink and downlink configuration feedback, or the terminal can receive the first correct time in the TDD uplink and downlink configuration change period. After the uplink and downlink configuration of the TDD, whether or not the TDD uplink and downlink configuration is detected, the data is still fed back to the ACK. The so-called number of times may be the number of times agreed with the base station, or may be started until the next change period.

Scenario 10: The terminal passes the PUCCH feedback TDD uplink and downlink configuration is correctly received, and the HARQ timing relationship between the transmission and the feedback is configured by the base station.

Only after the terminal receives the TDD uplink and downlink configuration correctly (for example, the TDD uplink and downlink configuration is carried in SIB1), the terminal will use the physical layer signaling to feed back the ACK through the PUCCH. The terminal correctly receives the TDD uplink and downlink configuration, which may be The physical layer receives correctly, and the RRC layer can correctly receive the former. The former refers to the physical layer to directly feedback when it receives correctly, and the latter refers to the physical layer feedback triggered by the RRC layer after the RRC layer receives the correct one.

The feedback subframe (denoted as subframe n) satisfies the determined HARQ timing relationship with the subframe in which the correctly received TDD uplink and downlink configuration is located (denoted as subframe k). The timing relationship is configured by the base station, for example, n = k + 1, 1 is notified by the base station through higher layer signaling.

Generally, once the terminal correctly receives the newly allocated TDD uplink and downlink configuration, the TDD uplink and downlink configuration is no longer detected. Therefore, the terminal only needs to feedback once during the TDD uplink and downlink configuration change period, that is, only the first correct reception After the TDD uplink and downlink configuration feedback, or in the TDD uplink and downlink configuration change period, the terminal can also receive the TDD uplink and downlink configuration correctly after the first time, whether or not to detect the TDD uplink and downlink configuration, still data feedback ACK, where the so-called number The number may be the number of times agreed with the base station, or it may be until the next change period begins.

Scenario 11: The terminal passes the PUCCH feedback. The TDD uplink and downlink configuration is correctly received, and the HARQ timing relationship between the transmission and the feedback is agreed by the protocol.

After the terminal receives the TDD uplink and downlink configuration (for example, the TDD uplink and downlink configuration bearer is in SIB1), the terminal uses the physical layer signaling to feed back ACK or NACK through the PUCCH, and correctly receives the feedback ACK, and does not correctly receive the feedback NACK, where the terminal Whether the TDD uplink and downlink configuration is correctly received may be whether the physical layer is correctly received, or whether the RRC layer correctly receives the former; the former refers to direct feedback according to the physical layer receiving state, and the latter refers to the RRC layer triggers the physical according to the RRC layer receiving state. Layer feedback.

Scenario 12: The terminal feeds back through the PUCCH to determine whether the TDD uplink and downlink configuration is correctly received, and the HARQ timing relationship between the transmission and the feedback is configured by the base station.

After the terminal receives the TDD uplink and downlink configuration (for example, the TDD uplink and downlink configuration bearer is in the Smi), the terminal uses the physical layer signaling to feed back the ACK or the NACK through the PUCCH, and correctly receives the feedback ACK, and does not correctly receive the feedback NACK, where the terminal is The correct receiving of the TDD uplink and downlink configuration may be whether the physical layer is correctly received, or whether the RRC layer is correctly received. The former refers to direct feedback according to the physical layer receiving state, and the latter refers to the physical layer triggered by the RRC layer according to the RRC layer receiving state. Feedback.

The feedback subframe (denoted as subframe n) satisfies the determined HARQ timing relationship with the subframe in which the correctly received TDD uplink and downlink configuration is located (denoted as subframe k). The timing relationship is configured by the base station, for example, n=k+l, 1 is passed by the base station through higher layer signaling. Notify the terminal.

In the embodiment of the present invention, after the base station allocates the latest TDD uplink and downlink configuration to the terminal, the terminal feeds back the received situation of the newly allocated TDD uplink and downlink configuration to the base station, and the base station and the terminal refer to the receiving situation, and select an appropriate one. The TDD uplink and downlink configuration controls the uplink and downlink transmissions in the subsequent process. Therefore, there is no inconsistency between the base station side and the terminal side in understanding the TDD uplink and downlink configuration, and the occurrence of the ambiguity period is avoided, so that the base station and the terminal can follow the consistent TDD. The uplink and downlink configuration controls uplink and downlink transmission, which effectively guarantees the system's service quality and improves system performance.

On the other hand, in the time when the terminal completes the transition of the TDD uplink and downlink configuration, if the base station does not schedule the terminal, the solution of the invention can shorten the waiting time of the base station, thereby effectively avoiding waste of system resources and improving resource utilization.

The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (system), and computer program products according to embodiments of the invention. It will be understood that each process 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 of the flow or in a block or blocks of a flow diagram.

Although the preferred embodiment of the invention has been described, it will be apparent to those skilled in the art that, Therefore, the appended claims are intended to be construed as including the preferred The embodiments and all changes and modifications that fall within the scope of the invention. The spirit and scope of the Ming. Thus, it is intended that the present invention cover the modifications and the modifications of the invention

Claims

Rights request

A time-division duplex TDD uplink and downlink configuration transmission feedback method, characterized in that:

The base station determines the newly allocated TDD uplink and downlink configuration of the terminal, and notifies the terminal of the newly allocated TDD uplink and downlink configuration;

2. The method according to claim 1, wherein the base station receives the received condition of the newly allocated TDD uplink and downlink configuration fed back by the terminal through physical layer signaling or higher layer signaling.

The method according to claim 2, wherein the receiving, by the base station, the receiving condition of the newly allocated TDD uplink and downlink configuration fed back by the terminal, including:

The eNB sends the correct response ACK of the newly allocated TDD uplink and downlink configuration by receiving the physical layer signaling sent by the receiving terminal on the physical uplink control channel PUCCH, or

The base station transmits the ACK of the TDD uplink and downlink configuration correctly received by the receiving terminal or the error response indicating that the newly allocated TDD uplink and downlink configuration is not correctly received by the receiving end of the physical layer signaling sent by the receiving terminal on the PUCCH.

The method according to claim 3, wherein the physical layer signaling is used by the base station to notify the terminal through high layer signaling at a resource location occupied by the PUCCH.

The method according to claim 3, wherein the base station notifies the hybrid automatic and retransmission request HARQ timing relationship between the newly allocated TDD uplink and downlink configuration and the terminal feedback physical layer signaling, and the base station and the terminal pre-agreed Or, configured by the base station to the terminal.

The method according to claim 2, wherein the receiving, by the base station, the receiving condition of the newly allocated TDD uplink and downlink configuration fed back by the terminal, comprising:

The base station controls the MAC signaling or the radio resource control RRC signaling by the medium access control, and the ACK that is received by the receiving terminal and indicates that the newly allocated TDD uplink and downlink configuration is correctly received; or

The base station sends, by means of the MAC signaling or the RRC signaling, the ACK that is received by the terminal to correctly receive the newly allocated TDD uplink and downlink configuration or the NACK that does not correctly receive the newly allocated TDD uplink and downlink configuration; or

The base station receives the identifier of the TDD uplink and downlink configuration currently used by the terminal fed back by the terminal through MAC signaling or RRC signaling.

The method according to claim 6, wherein the base station receives the received situation of the newly allocated TDD uplink and downlink configuration fed back by the terminal through the high layer signaling, and further acquires in the high layer signaling. The terminal receives the time information of the newly allocated TDD uplink and downlink configuration.

The method according to any one of claims 1 to 7, wherein the base station according to the new score fed back by the terminal The received TDD uplink and downlink configuration is controlled by the corresponding TDD uplink and downlink configuration to control uplink and downlink transmission, including: If the base station determines, according to the feedback of the terminal, that the terminal has correctly received the newly allocated TDD uplink and downlink configuration, the newly allocated TDD is adopted. The row configuration controls subsequent uplink and downlink transmissions;

If the base station determines that the terminal does not correctly receive the newly allocated TDD uplink and downlink configuration according to the feedback of the terminal, the base station continues to use the currently used TDD uplink and downlink configuration to control subsequent uplink and downlink transmission.

The terminal controls the uplink and downlink transmissions according to the received situation of the newly allocated TDD uplink and downlink configuration, and uses the corresponding TDD uplink and downlink configuration.

The method according to claim 9, wherein the terminal feeds back, by the physical layer signaling or the high layer signaling, the receiving condition of the newly allocated TDD uplink and downlink configuration to the base station.

The method according to claim 10, wherein the terminal feeds back, by the physical layer signaling, the reception status of the newly allocated TDD uplink and downlink configuration to the base station, including:

The method according to claim 11, wherein the physical layer signaling is used by the base station to notify the terminal by high layer signaling on the resource location occupied by the PUCCH.

The method according to claim 11, wherein the base station notifies the hybrid automatic and retransmission request HARQ timing relationship between the newly allocated TDD uplink and downlink configuration and the terminal feedback physical layer signaling, and the base station and the terminal pre-arrange Or, configured by the base station to the terminal.

The method according to claim 10, wherein the terminal feeds back, by the high layer signaling, the receiving condition of the newly allocated TDD uplink and downlink configuration to the base station, including:

The terminal controls the MAC signaling or the radio resource control RRC signaling through the medium access control, and feeds back to the base station to correctly receive the ACK of the newly allocated TDD uplink and downlink configuration; or

The terminal, through the MAC signaling or the RRC signaling, feeds back to the base station, the ACK indicating that the newly allocated TDD uplink and downlink configuration is correctly received, or the NACK indicating that the newly allocated TDD uplink and downlink configuration is not correctly received; or

The terminal feeds back the identifier of the TDD uplink and downlink configuration currently used by the terminal to the base station through MAC signaling or RRC signaling.

The method of claim 9, wherein the terminal carries the newly allocated TDD uplink and downlink configuration reception condition in the high layer signaling, and further carries the terminal to receive the new allocation in the high layer signaling. On TDD Time information of the downlink configuration.

The method according to any one of claims 9 to 15, wherein the terminal controls the uplink and downlink transmission by using the corresponding TDD uplink and downlink configuration according to the received situation of the newly allocated TDD uplink and downlink configuration, including:

If the terminal has correctly received the newly allocated TDD uplink and downlink configuration, the newly allocated TDD uplink and downlink configuration is used to control subsequent uplink and downlink transmissions;

If the terminal does not correctly receive the newly allocated TDD uplink and downlink configuration, it continues to use the currently used TDD uplink and downlink configuration to control subsequent uplink and downlink transmissions.

A transmission feedback device for time-division duplex TDD uplink and downlink configuration, comprising: a first processing unit, configured to determine a newly allocated TDD uplink and downlink configuration for the terminal, and configure the newly allocated TDD uplink and downlink Notifying the terminal;

The device according to claim 17, wherein the first processing unit receives the received situation of the newly allocated TDD uplink and downlink configuration fed back by the terminal through physical layer signaling or high layer signaling.

The device according to claim 18, wherein the first processing unit is configured to: receive, by using a physical layer signaling sent on a physical uplink control channel PUCCH, a feedback received by the receiving terminal to correctly receive a new allocation. The correct response ACK of the TDD uplink and downlink configuration; or,

The physical layer signaling sent by the receiving terminal on the PUCCH indicates that the ACK of the newly allocated TDD uplink and downlink configuration is correctly received or the error response NACK ₀ indicating that the newly allocated TDD uplink and downlink configuration is not correctly received.

The device according to claim 18, wherein the first processing unit is specifically configured to: control, by using a medium access control, MAC signaling or radio resource control, RRC signaling, and receiving, by the receiving terminal, indicating that the new allocation is correctly received. ACK of the TDD uplink and downlink configuration; or,

The device according to claim 20, wherein the first processing unit receives, by the high-layer signaling, the receiving condition of the newly allocated TDD uplink-downlink configuration fed back by the terminal, at the upper layer In the signaling, the terminal obtains time information of the newly allocated TDD uplink and downlink configuration.

The apparatus according to any one of claims 17 to 21, wherein the second processing unit is specifically used for:

If it is determined according to the feedback of the terminal that the terminal has correctly received the newly allocated TDD uplink and downlink configuration, the newly allocated The TDD uplink and downlink configuration controls subsequent uplink and downlink transmissions;

A transmission feedback device for time-division duplex TDD uplink and downlink configuration, comprising: a communication unit, configured to receive a newly allocated TDD uplink and downlink configuration of the base station, and feed back the newly allocated TDD uplink and downlink configuration to the base station. Receiving situation;

The device according to claim 23, wherein the communication unit feeds back, by the physical layer signaling or the high layer signaling, the receiving condition of the newly allocated TDD uplink and downlink configuration to the base station.

The device according to claim 24, wherein the communication unit is specifically configured to:

The identifier of the TDD uplink and downlink configuration currently used by the terminal is fed back to the base station through the MAC signaling or the RRC signaling.

The device according to claim 26, wherein the communication unit further carries the terminal in the high layer signaling while carrying the newly allocated TDD uplink and downlink configuration receiving situation in the high layer signaling. Receive time information of the newly allocated TDD uplink and downlink configuration.

The device according to any one of claims 23 to 27, wherein the control unit is specifically configured to: if the newly allocated TDD uplink and downlink configuration has been correctly received, adopt a newly allocated TDD uplink and downlink configuration control Subsequent uplink and downlink transmissions;

If the newly allocated TDD uplink and downlink configuration is not correctly received, the current TDD uplink and downlink configuration is used to control subsequent uplink and downlink transmissions.

29. A base station, comprising:

a first processor, configured to receive, according to the newly allocated TDD uplink and downlink configuration received by the terminal, The corresponding TDD uplink and downlink configuration controls uplink and downlink transmission.

The base station according to claim 29, wherein the first signal transmission device receives the received condition of the newly allocated TDD uplink and downlink configuration fed back by the terminal through the physical layer signaling or the high layer signaling.

The base station according to claim 30, wherein the first signal transmission apparatus is specifically configured to: receive, by using a physical layer signaling sent on a physical uplink control channel PUCCH, a feedback received by the receiving terminal to correctly receive a new one. The correct response ACK of the allocated TDD uplink and downlink configuration; or,

The base station according to claim 30, wherein the first signal transmission device is specifically configured to: control MAC signaling or radio resource control RRC signaling by using media access, and receive feedback from the terminal to correctly receive new The ACK of the allocated TDD uplink and downlink configuration; or,

The base station according to claim 32, wherein the first signal transmission device receives, by the high-level signaling, the reception condition of the newly allocated TDD uplink and downlink configuration fed back by the terminal, The high-level signaling further acquires time information that the terminal receives the newly allocated TDD uplink and downlink configuration.

The base station according to any one of claims 29 to 33, wherein the first processor is specifically configured to: if it is determined according to feedback of the terminal that the terminal has correctly received the newly allocated TDD uplink and downlink configuration, Newly allocated

The TDD uplink and downlink configuration controls subsequent uplink and downlink transmissions;

35. A terminal, comprising:

The terminal according to claim 35, wherein the second signal transmission device feeds back, by the physical layer signaling or the high layer signaling, the reception condition of the newly allocated TDD uplink and downlink configuration to the base station.

The terminal according to claim 36, wherein the second signal transmission device is specifically configured to: feed back to the base station to indicate correct connection by using physical layer signaling that is sent on a physical uplink control channel PUCCH. Receiving the correct response ACK of the newly allocated TDD uplink and downlink configuration, or

The terminal according to claim 36, wherein the second signal transmission device is specifically configured to: control, by using a medium access control, MAC signaling or radio resource control, RRC signaling, and feedback to the base station to indicate that the new allocation is correctly received. ACK of the TDD uplink and downlink configuration; or,

The terminal according to claim 38, wherein the second signal transmission device carries the newly allocated TDD uplink and downlink configuration reception condition in the high layer signaling, in the high layer signaling The mobile terminal further receives time information of the newly allocated TDD uplink and downlink configuration.

The terminal according to any one of claims 35 to 39, wherein the second processor is specifically configured to: if the newly allocated TDD uplink and downlink configuration has been correctly received, adopt a newly allocated TDD uplink and downlink The configuration controls subsequent uplink and downlink transmissions;