WO2018054136A1

WO2018054136A1 - Downlink transmission method and corresponding device

Info

Publication number: WO2018054136A1
Application number: PCT/CN2017/092649
Authority: WO
Inventors: 高雪娟; 潘学明; 郑方政
Original assignee: 电信科学技术研究院
Priority date: 2016-09-23
Filing date: 2017-07-12
Publication date: 2018-03-29

Abstract

Disclosed in the present invention are a downlink transmission method and a corresponding device, used to enable dynamic adjustment of uplink and downlink resources in a future communications system. The method is: a terminal determining a downlink detection location during a first time unit, and detecting a first downlink signal in said downlink detection location during the first time unit; the terminal determining, according to the first downlink signal, a downlink area corresponding to the downlink detection location and/or an uplink area corresponding to the downlink detection location.

Description

Downlink transmission method and related equipment

This application claims the priority of the Chinese Patent Application filed on September 23, 2016, the Chinese Patent Office, the application number is 201610848534.9, the invention name is "a downlink transmission method and related equipment", and the request is on December 29, 2016. The priority of the Chinese Patent Application No. 201611249798.9, the entire disclosure of which is hereby incorporated by reference in its entirety in its entirety in its entirety in the the the the the the the the the

Technical field

The present invention relates to the field of communications technologies, and in particular, to a downlink transmission method and related devices.

Background technique

Frame structure in Long Term Evolution (LTE) system:

In the existing LTE system, the following frame structure is defined for Time Division Duplex (TDD):

The Frame Structure Type 2 (FS2) is used in the LTE TDD system. Figure 1 shows the structure of the FS2. Uplink and downlink transmissions use different subframes or different time slots on the same frequency. Each 10 ms length radio frame in FS2 consists of two 5 ms length half frames, each of which contains five 1 ms length subframes. The sub-frames in FS2 are classified into three types: downlink sub-frames, uplink sub-frames, and special sub-frames. Each special sub-frame consists of Downlink Pilot Time Slot (DwPTS) and Guard Period (Guard Period, GP) and Uplink Pilot Time Slot (UpPTS) are composed of three parts. Each field includes at least one downlink subframe and at least one uplink subframe, and at most one special subframe. According to different uplink and downlink switching point periods and uplink and downlink allocation ratios, seven kinds of TDD uplink and downlink configurations as shown in Table 1 and ten special subframe structures as shown in Table 2 are defined.

Table 1: Uplink and downlink configurations

Table 2: Special Subframe Configuration (DwPTS/GP/UpPTS Length)

Where Ts is the time interval of the system and X is a predefined or configured value.

In the LTE system, the uplink and downlink resource partitioning is implemented by the definition of the TDD frame structure. Therefore, an LTE cell can only be configured with one TDD frame structure, and only supports fixed uplink and downlink resource partitioning, and system information broadcasted through the cell. The notification, therefore fixed, is shared by all terminals in the cell.

In addition, in the LTE system, a GP is required between the uplink resource and the downlink resource to avoid interference between uplink and downlink in the same cell, and to implement downlink to uplink switching. The GP exists only in the special subframe in each of the TDD uplink and downlink configurations. The length of the GP depends on the special subframe configuration. A special subframe configuration corresponds to the downlink resource (DwPTS part) and the uplink in the special subframe. The length of the resource (UpPTS part) and the GP part. The special subframe configuration is also notified in a cell by the system information broadcasted in the cell, and therefore is fixed, and is shared by all terminals in the cell.

With the development of mobile communication services, organizations such as the ITU (International Telecommunication Union) and 3GPP (3rd Generation Partnership Project) have begun to research. Research on new wireless communication systems (such as 5G systems). The new wireless communication system can support multiple service types, such as eMBB (Enhanced Mobile Broadband) service, URLLC (Ultra Reliable & Low Latency Communication), mMTC (Massive Machine) Type Communication, massively connected Internet of Things), etc., the business volume of the same business will also change. When the uplink and downlink services use the Time Division Multiplexing (TDM) mode to share the same frequency band resources, in order to support different service types and traffic requirements, flexible and variable resource allocation needs to be supported.

It can be seen that in the future communication system, the uplink resource and the downlink resource can be dynamically divided, and the GP between the uplink and downlink resources also needs to be flexibly changed to adapt to different needs. In the LTE system, the uplink and downlink resource allocation and the GP configuration are both cell-specific configurations. The terminals in the cell are all in the same configuration, and cannot dynamically make dynamic changes to the service types, traffic, and interference conditions of the terminals in the future communication system. Adjustment.

Summary of the invention

The embodiments of the present invention provide a downlink transmission method and related equipment, which are used to implement dynamic adjustment of uplink and downlink resources in a future communication system.

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

In a first aspect, an embodiment of the present invention provides a downlink transmission method, including:

Determining, by the terminal, a downlink detection location in the first time unit, and detecting a first downlink signal in a downlink detection location in the first time unit;

The terminal determines, according to the first downlink signal, a downlink area corresponding to the downlink detection location and/or an uplink zone corresponding to the downlink detection location.

In a possible implementation, the determining, by the terminal, the downlink detection location in the first time unit, specifically includes:

Determining, by the terminal, a downlink detection location in the first time unit according to high layer signaling; or

Determining, by the terminal, a downlink detection location in the first time unit according to a pre-arrangement with the base station; or

The terminal detects a second downlink signal at a specific position in each or a specific first time unit, determines, according to the second downlink signal, a first time unit that detects the second downlink signal, or detects the first N1 first time units starting from the first time unit of the two downlink signals or downlink detecting positions in the N2 first time units after detecting the first time unit of the second downlink signal, where N1 and N2 are An integer greater than or equal to 1.

In a possible implementation, if the first downlink signal is used to notify the size of the downlink area in the first time unit, the second downlink signal is further used to notify the location of the uplink area in the first time unit. / or size;

And if the first downlink signal is used to notify the size of the uplink area in the first time unit, the second downlink signal is further used to notify the location and/or size of the downlink area in the first time unit.

In a possible implementation manner, the downlink detection location is a location of a specific second time unit in the first time unit, where the second time unit is smaller than the first time unit.

In a possible implementation, the second time unit is A symbols, or B mini-slots, or C slots, or D subframes; wherein the mini-slot is a minimum scheduling unit, and a mini-slot Contains E symbols, one slot contains one or more mini-slots, one sub-frame contains one or more slots, and A, B, C, D, E are pre-configured or predefined values greater than or equal to 1.

In a possible implementation manner, the terminal determines, according to the first downlink signal, a downlink area corresponding to the downlink detection location, including:

Obtaining, by the terminal, a cutoff position of the downlink area carried in the first downlink signal, and using the downlink detection location or a downlink detection location or location in the N3 first time units after the first time unit Determining a downlink starting position in the N3 first time units after the first time unit as a starting position of the downlink area;

or,

Obtaining, by the terminal, a starting position of the guard interval GP carried in the first downlink signal, and using the downlink detecting position or a downlink detecting position or location in the N3 first time units after the first time unit The downlink start position in the N3 first time units after the first time unit is used as the start position of the downlink area, and the start position of the GP is determined as the cutoff position of the downlink area.

In a possible implementation manner, the terminal determines, according to the first downlink signal, an uplink area corresponding to the downlink detection location, including:

The terminal acquires a starting position of the uplink area carried in the first downlink signal, and determines a location of the uplink area according to a starting position of the uplink area and a preset cutoff position of the uplink area. And / or size;

or,

The terminal acquires a starting position of the uplink area and a cutoff position of the uplink area carried in the first downlink signal, and determines, according to a starting position of the uplink area and a cutoff position of the uplink area. State the location and/or size of the upstream region;

or,

The terminal acquires a start position of the uplink area and a length of the uplink area carried in the first downlink signal, and determines the uplink according to a start position of the uplink area and a length of the uplink area. The location and/or size of the area;

or,

Determining, by the terminal, a cutoff position of the guard interval GP area according to the first downlink signal, using a cutoff position of the GP area as a start position of the uplink area, according to a start position and a preset of the uplink area The cutoff position of the upstream region determines the location and/or size of the upstream region.

In a possible implementation, the size of the downlink area is the length of time of the downlink area, or the length of time of the downlink area that needs to be monitored; or

The downlink area corresponding to the downlink detection location is a downlink area starting from the downlink detection location, and/or a downlink detection position in the N3 first time units after the first time unit or a downlink area in which the downlink start position in the N3 first time units after the first time unit starts; or

The uplink area corresponding to the downlink detection location is an uplink area scheduled by the downlink control channel of the uplink DCI format detected in the downlink area corresponding to the downlink detection location, or the downlink The uplink area corresponding to the detection location is an uplink area for transmitting ACK/NACK feedback information of the downlink transmission in the downlink area corresponding to the downlink detection location.

In a possible implementation manner, the downlink detection location exists in each first time unit or only in a specific first time unit;

If the downlink detection location exists only in a specific first time unit, for the first time unit where the downlink detection location does not exist, or the downlink detection location exists but no detection is detected in the downlink detection location A first time unit of a downlink signal refers to a partition of a downlink region and/or an uplink region in a first time unit in which the downlink detecting position exists and the first downlink signal is detected.

In a possible implementation, the first time unit includes N second time units, or the first time unit is one or more time slot slots, or one or more subframes, or one or more Radio frames.

In a possible implementation, the first downlink signal is a downlink control channel using a downlink DCI format, or a downlink control channel using an uplink DCI format.

In a second aspect, an embodiment of the present invention provides a downlink transmission method, including:

Determining, by the base station, a downlink detection location in the first time unit;

The base station sends a first downlink signal to the downlink detection location in the first time unit, and is configured to notify the terminal to determine, according to the first downlink signal, a downlink area and/or a location corresponding to the downlink detection location. The uplink area corresponding to the downlink area.

In a possible implementation, the determining, by the base station, the downlink detection location in the first time unit, specifically includes:

Determining, by the base station, a downlink detection location in the first time unit, and notifying the downlink detection location in the first time unit to the terminal by using high layer signaling; or

Determining, by the base station, a downlink detection location in the first time unit according to a pre-arrangement with the terminal; or

The base station sends a second downlink signal at a specific position in each or a specific first time unit, to notify the terminal that the first time unit of the second downlink signal is detected or the second downlink signal is detected. N1 first time units starting with the first time unit or downlink detection positions in the N2 first time units after detecting the first time unit of the second downlink signal, where N1, N2 are greater than or equal to 1 The integer.

In a possible implementation, after the determining, by the base station, the downlink detection location in the first time unit, before the sending the first downlink signal in the downlink detection location in the first time unit, the method further includes:

The base station performs neighboring area interference measurement before the downlink detection position, determines a neighboring area interference strength and a neighboring area interference area, and determines a first guard interval GP area according to the neighboring area interference strength and the neighboring area interference area. Size; and / or

The base station determines a time advance TA value of the terminal that performs uplink transmission in the uplink region after the downlink detection location, and determines a size of the second guard interval GP region according to the maximum value of the TA values of the terminal.

In a possible implementation manner, the method further includes:

The base station adjusts a downlink area corresponding to the downlink detection location and/or an uplink zone corresponding to the downlink detection location according to a size of the first GP area and/or a size of the second GP area.

In a possible implementation manner, the method further includes:

The base station notifies the neighboring base station of the size of the first GP area.

In a possible implementation manner, the first downlink signal carries a size of a downlink area corresponding to the downlink detection location, and/or carries a size of an uplink area corresponding to the downlink detection location, and/or carries a GP. a size of the area, the size of the GP area being the size of the first GP area and/or the second GP area or determined according to the size of the first GP area and/or the second GP area The size of the GP area.

In a possible implementation manner, the first downlink signal carries a cutoff position of the downlink area, and the downlink detection location or a downlink detection location in the N3 first time units after the first time unit or a downlink starting position in the N3 first time units after the first time unit is used as a starting position of the downlink area;

or,

The first downlink signal carries a start position of the guard interval GP area, and the downlink detection position or the downlink detection position or the first time in the N3 first time units after the first time unit a downlink start position in the N3 first time units after the unit is used as a start position of the downlink area, and a start position of the GP area is determined as a cutoff position of the downlink area;

or,

The first downlink signal carries a start position of the uplink area, and determines a position and/or a size of the uplink area according to a start position of the uplink area and a preset cutoff position of the uplink area;

or,

The first downlink signal carries a start position of the uplink area and a cutoff position of the uplink area, and determines a location of the uplink area according to a start position of the uplink area and a cutoff position of the uplink area. And / or size;

or,

The first downlink signal carries a start position of the uplink area and a length of the uplink area, and determines a location of the uplink area according to a start position of the uplink area and a length of the uplink area. Or size

or,

The first downlink signal carries a cutoff position of the guard interval GP area, and the cutoff position of the GP area is used as a start position of the uplink area, according to the start position of the uplink area and the preset The cutoff position of the up region determines the location and/or size of the up region.

The downlink area corresponding to the downlink detection location is a downlink area starting from the downlink detection location, and/or a downlink detection location or the first time in N3 first time units after the first time unit a downlink region starting from a downlink start position in N3 first time units after the unit; or

The uplink area corresponding to the downlink detection location is an uplink area scheduled by using the downlink control channel of the uplink DCI format detected in the downlink detection location or the uplink area corresponding to the downlink detection location, or The uplink area corresponding to the downlink detection location is an uplink area for transmitting downlink transmission ACK/NACK feedback information in the downlink area corresponding to the downlink detection location.

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

a first processing module, configured to determine a downlink detection location in the first time unit, and detect a first downlink signal in a downlink detection location in the first time unit;

The second processing module is configured to determine, according to the first downlink signal, a downlink area corresponding to the downlink detection location and/or an uplink zone corresponding to the downlink detection location.

In a possible implementation manner, the first processing module is specifically configured to:

Determining, according to the high layer signaling, a downlink detection location in the first time unit; or

Determining a downlink detection location in the first time unit according to a pre-agreed with the base station; or

Detecting a second downlink signal at a specific position in each or a specific first time unit, determining, according to the second downlink signal, detecting the first time unit of the second downlink signal or detecting the second downlink signal First time N1 first time units starting from the unit or downlink detecting positions in N2 first time units after detecting the first time unit of the second downlink signal, where N1, N2 are integers greater than or equal to 1.

In a possible implementation manner, the second processing module is specifically configured to:

Obtaining a cutoff position of the downlink area carried in the first downlink signal, and using the downlink detection location or a downlink detection location in the N3 first time units after the first time unit or the first a downlink starting position in the N3 first time units after the time unit as a starting position of the downlink area;

or,

Acquiring a starting position of the guard interval GP carried in the first downlink signal, and the downlink detecting position or the downlink detecting position in the N3 first time units after the first time unit or the first The downlink start position in the N3 first time units after the time unit is used as the start position of the downlink region, and the start position of the GP is determined as the cutoff position of the downlink region.

Obtaining a starting position of the uplink area carried in the first downlink signal, determining a location of the uplink area according to a starting position of the uplink area and a preset cutoff position of the uplink area, and/or size;

or,

Obtaining a starting position of the uplink area and a cutoff position of the uplink area carried in the first downlink signal, and determining the uplink area according to a starting position of the uplink area and a cutoff position of the uplink area Location and / or size;

or,

Obtaining a starting position of the uplink area and a length of the uplink area carried in the first downlink signal, and determining a location of the uplink area according to a starting position of the uplink area and a length of the uplink area And / or size;

or,

Determining a cutoff position of the guard interval GP region according to the first downlink signal, and setting a cutoff position of the GP region The initial position of the uplink area is determined, and the position and/or size of the uplink area is determined according to a starting position of the uplink area and a preset cutoff position of the uplink area.

In a fourth aspect, an embodiment of the present invention provides a base station, including:

a processing module, configured to determine a downlink detection location in the first time unit;

a sending module, configured to send a first downlink signal in a downlink detection location in the first time unit, to notify the terminal to determine, according to the first downlink signal, a downlink area corresponding to the downlink detection location, and/or An uplink area corresponding to the downlink area.

In a possible implementation manner, the processing module is specifically configured to:

Determining a downlink detection location in the first time unit, and notifying the downlink detection location in the first time unit to the terminal by using high layer signaling; or

Determining a downlink detection location in the first time unit according to a pre-arrangement with the terminal; or

Transmitting, at a specific location in each or a specific first time unit, a second downlink signal, configured to notify the terminal to detect the first time unit of the second downlink signal or the first time of detecting the second downlink signal N1 first time units starting from the unit or N2 first time units after detecting the first time unit of the second downlink signal The downlink detection position, where N1 and N2 are integers greater than or equal to 1.

In a possible implementation, the processing module is further configured to:

After determining the downlink detection location in the first time unit, before the sending module sends the first downlink signal in the downlink detection location in the first time unit,

Performing a neighboring area interference measurement before the downlink detection position, determining a neighboring area interference strength and a neighboring area interference area, and determining a size of the first guard interval GP area according to the neighboring area interference strength and the neighboring area interference area; and /or

Determining a timing advance TA value of the terminal performing uplink transmission in the uplink region after the downlink detection location, and determining a size of the second guard interval GP region according to a maximum value among the TA values of the terminal.

In a possible implementation, the processing module is further configured to:

And adjusting a downlink region corresponding to the downlink detection location and/or an uplink region corresponding to the downlink detection location according to a size of the first GP area and/or a size of the second GP area.

In a possible implementation manner, the sending module is further configured to:

Notifying the neighboring base station of the size of the first GP area.

or,

The first downlink signal carries a start position of the guard interval GP area, and the downlink detection position or the downlink detection position or the first time in the N3 first time units after the first time unit N3 after the unit a downlink start position in the first time unit is used as a start position of the downlink area, and a start position of the GP area is determined as a cutoff position of the downlink area;

or,

In a fifth aspect, an embodiment of the present invention provides another terminal, where the terminal includes a processor, a memory, and a transceiver, where the transceiver is configured to receive and transmit data under the control of the processor, where the preset is stored in the memory. a program for reading a program in the memory, according to which the following process is performed:

Determining a downlink detection location in the first time unit, and detecting a first downlink signal in a downlink detection location in the first time unit;

Determining, according to the first downlink signal, a downlink area corresponding to the downlink detection location and/or an uplink zone corresponding to the downlink detection location.

In a sixth aspect, the embodiment of the present invention further provides a base station, where the base station includes a processor, a memory, and a transceiver, where the transceiver is configured to receive and send data under the control of the processor, and the preset is stored in the memory. Program, the processor is used to read a program in the memory, according to the program to perform the following process:

Determining a downlink detection position in the first time unit;

Transmitting, by the transceiver, the first downlink signal in the downlink detection position in the first time unit, to notify the terminal, according to the first downlink signal, to determine a downlink area and/or a location corresponding to the downlink detection location. The uplink area corresponding to the downlink area.

Based on the foregoing technical solution, in the embodiment of the present invention, the terminal determines the downlink detection location in the first time unit, detects the first downlink signal in the downlink detection location, and determines, according to the first downlink signal, the downlink detection location. The downlink area and/or the uplink area corresponding to the downlink detection location, so that the uplink area and/or the downlink area can be dynamically determined according to the downlink detection location and the first downlink signal, so that uplink and downlink can be implemented in a future communication system. Dynamic adjustment of resources.

DRAWINGS

Figure 1 is a schematic structural view of FS2;

2a is a schematic diagram of dynamically adjusting a length of a part of a downlink area and a GP area according to an embodiment of the present invention;

2b is a schematic diagram of dynamically adjusting a length of a portion of an uplink region and a GP region according to an embodiment of the present invention;

2c is a schematic diagram of dynamically adjusting lengths of a downlink area, a GP area, and an uplink area according to an embodiment of the present invention;

3 is a schematic flowchart of processing performed by a terminal side in a downlink transmission process according to an embodiment of the present invention;

4 is a schematic flowchart of processing performed by a base station side in a downlink transmission process according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart of processing performed by another terminal side in a downlink transmission process according to an embodiment of the present disclosure;

FIG. 6 is a schematic flowchart of processing performed by another base station side in a downlink transmission process according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a subframe in a first embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram of another subframe in the first embodiment of the present invention; FIG.

9 is a schematic structural diagram of a subframe in a second embodiment of the present invention;

FIG. 10 is a schematic structural diagram of another subframe in a second embodiment of the present invention; FIG.

FIG. 11 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of a base station according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of another terminal according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of another base station according to an embodiment of the present invention;

FIG. 15 is a schematic structural diagram of another terminal according to an embodiment of the present invention;

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

FIG. 17 is a schematic structural diagram of another terminal according to an embodiment of the present invention;

FIG. 18 is a schematic structural diagram of another base station according to an embodiment of the present invention.

detailed description

The present invention will be further described in detail with reference to the accompanying drawings, in which FIG. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the following description, the implementation of the cooperation between the network side and the terminal side will be described first, and finally the implementation from the network side and the terminal side will be described separately, but this does not mean that the two must be implemented together, in fact, when the network When the side is separated from the terminal side, the problems existing on the network side and the terminal side are also solved, but when the two are combined, a better technical effect is obtained.

In the embodiment of the present invention, in order to implement dynamic adjustment of uplink and downlink resources in a future communication system, a downlink transmission method is proposed, and the core idea of the method is: a time unit includes a downlink area, a GP area, and an uplink area, The base station dynamically determines the length of the GP area according to the system transmission requirement. When dynamically determining the size of the GP area, the length of a part of the downlink area and the GP area (for example, the length of the fixed uplink transmission part) may be dynamically adjusted, or the uplink may be dynamically adjusted. The length of a part of the area and the GP area (for example, the length of the fixed downlink transmission part), or dynamically adjust the lengths of the downlink area, the GP area, and the uplink area, as shown in FIG. 2a, dynamically adjusting a part of the downlink area and the GP area. A schematic diagram of the length, as shown in FIG. 2b, is a schematic diagram of dynamically adjusting the lengths of a portion of the uplink region and the GP region, and FIG. 2c is a schematic diagram of dynamically adjusting the lengths of the downlink region, the GP region, and the uplink region.

Based on the idea, in the embodiment of the present invention, the processing flow of the terminal side in the downlink transmission process is as shown in FIG. 3, and the details are as follows:

Step 301: The terminal determines a downlink detection location in the first time unit, and detects a first downlink signal in the downlink detection location in the first time unit.

In the embodiment of the present invention, the terminal determines the downlink detection location in the first time unit, including but not limited to the following implementation manners:

First, the terminal determines the downlink detection location in the first time unit according to the high layer signaling.

Second, the terminal determines the downlink detection location in the first time unit according to a pre-arrangement with the base station.

Third, the terminal detects the second downlink signal at a specific position in each or a specific first time unit, and determines, according to the second downlink signal, the first time unit that detects the second downlink signal or the second downlink signal that is detected. N1 first time units starting with a time unit or N2 first time times after detecting the first time unit of the second downlink signal A downlink detection position in the unit, where N1, N2 are integers greater than or equal to 1.

For example, in a third implementation, the terminal detects on the first Y symbols in each or a particular first time unit, or starts blind detection from a starting position in each or a particular first time unit. If the second downlink signal is sent in each first time unit, the downlink detection position may be changed for each first time unit, for example, the downlink detection position of the second first time unit may be the first The downlink detection position of a time unit is different, that is, the downlink detection position of each first time unit is independently indicated; if the second downlink signal is sent in a specific first time unit, the second downlink signal is periodic or intermittent. Sently transmitted, for example, assuming that the second downlink signal is transmitted once every four first time units, assuming that the first time unit i and the first time unit i+4 transmit and transmit the second downlink signal, the two first time The downlink detection positions indicated by the second downlink signal sent by the unit may be the same or different. In one implementation manner, the first time unit i to the first time unit i+3 are all sent according to the first time unit i. The second downlink signal determines its downlink detection position, and the first time unit i+4 to the first time unit i+7 are all determined according to the second downlink signal sent in the first time unit i+4. The downlink detection location is another implementation manner: only the first time unit i, the first time unit i+4, the first time unit i+8, and the like, the first time unit includes the downlink detection position, and the rest If the downlink detection location is not included in the first time unit, the uplink and downlink area division in the first time unit may refer to the first time unit including the downlink detection location in front of the first time unit or work in the default uplink and downlink area division manner or It is determined according to the previously received configuration signaling or the first downlink signal.

In a specific implementation manner of the third implementation, if the first downlink signal is used to notify the size of the downlink area in the first time unit, the second downlink signal is further used to notify the location of the uplink area in the first time unit. And/or size; if the first downlink signal is used to notify the size of the uplink area in the first time unit, the second downlink signal is further used to notify the location and/or size of the downlink area in the first time unit.

In various implementations of determining the downlink detection location, the downlink detection location is a location of a specific second time unit in the first time unit, wherein the second time unit is smaller than the first time unit.

Specifically, the second time unit is A symbols, or B mini-slots, or C slots, or D subframes; wherein the mini-slot is a minimum scheduling unit, and a mini-slot includes E symbols, a slot Contains one or more mini-slots, one sub-frame containing one or more slots, and A, B, C, D, E are pre-configured or predefined values greater than or equal to one. It should be noted that the symbols described herein may be Orthogonal Frequency Division Multiplexing (OFDM) symbols or Single-carrier Frequency-Division Multiple Access (SC-FDMA) symbols or Other multiple access symbols.

In the embodiment of the present invention, the first downlink signal and/or the second downlink signal are transmitted through a physical downlink control channel or transmitted through a broadcast channel. The physical downlink control channel is terminal-specific (transmitted in the USS), or shared by a group of terminals, or shared by all terminals (transmitted in the CSS); the physical downlink control channel is transmitted according to the legacy PDCCH mode, and can be used. Legacy DCI or shortened DCI.

Step 302: The terminal determines, according to the first downlink signal, a downlink area corresponding to the downlink detection location and/or Or an uplink area corresponding to the downlink detection location.

In the embodiment of the present invention, the terminal determines, according to the first downlink signal, a downlink area corresponding to the downlink detection location, including but not limited to the following two specific implementation manners:

In the first mode, the terminal acquires the cutoff position of the downlink area carried in the first downlink signal, and sets the downlink detection position or the downlink detection position in the N3 first time units after the first time unit or N3 after the first time unit. The downlink starting position in the first time unit is used as the starting position of the downlink area;

In the second mode, the terminal acquires the start position of the guard interval GP carried in the first downlink signal, and the downlink detection position or the downlink detection position in the N3 first time units after the first time unit or after the first time unit The downlink start position in the N3 first time units is used as the start position of the downlink region, and the start position of the GP is determined as the cutoff position of the downlink region.

In the embodiment of the present invention, the terminal determines, according to the first downlink signal, an uplink area corresponding to the downlink detection location, including but not limited to the following implementation manners:

In the first mode, the terminal acquires the starting position of the uplink area carried in the first downlink signal, and determines the position and/or size of the uplink area according to the starting position of the uplink area and the cutoff position of the preset uplink area.

In the second mode, the terminal acquires the start position of the uplink area carried in the first downlink signal and the cutoff position of the uplink area, and determines the position and/or size of the uplink area according to the start position of the uplink area and the cutoff position of the uplink area.

In the third manner, the terminal acquires the start position of the uplink area and the length of the uplink area carried in the first downlink signal, and determines the position and/or size of the uplink area according to the start position of the uplink area and the length of the uplink area.

In the fourth manner, the terminal determines the cutoff position of the guard interval GP area according to the first downlink signal, and uses the cutoff position of the GP area as the start position of the uplink area, and determines according to the start position of the uplink area and the cutoff position of the preset uplink area. The location and/or size of the upstream area.

In the embodiment of the present invention, the size of the downlink area is the length of the downlink area, or the length of the downlink area that needs to be monitored (that is, the length of time for detecting the downlink control channel); or the downlink area corresponding to the downlink detection position is a downlink region where the downlink detection position starts, and/or a downlink detection location in the N3 first time units after the first time unit (eg, the same position in the target first time unit as the relative position in the first time unit) a downlink detection location) or a downlink start location in the N3 first time units after the first time unit (eg, a pre-configured or defined downlink start location in the target first time unit, the target first time unit may The downlink detection location is not included, but only the downlink start location is used, and the downlink start location is used to determine the downlink region, or the target first time unit may also include a downlink detection location, a downlink detection location, and a downlink start location. The location may be different) the starting downlink region; or the uplink region corresponding to the downlink detection location is, in the downlink detection Setting the detected uplink area scheduled by using the downlink control channel of the uplink DCI format may be, for example, an uplink area in the same time unit as the downlink detection location, or a time after the time unit of the downlink detection location In the uplink area in the unit, the scheduling relationship is predefined or notified in the downlink control channel, or is in the downlink detection location. The uplink area scheduled by the downlink control channel of the uplink DCI format detected in the downlink area, or the uplink area corresponding to the downlink detection location is used for transmitting the downlink transmission in the downlink area corresponding to the downlink detection location The uplink area of the ACK/NACK feedback information.

In the embodiment of the present invention, the downlink detection location exists in each first time unit or only in a specific first time unit; if the downlink detection location exists only in a specific first time unit, there is no downlink Detecting a first time unit of the location, or a first time unit having a downlink detection location but not detecting the first downlink signal in the downlink detection location, referring to a front downlink detection location and detecting the first downlink signal The division of the downlink area and/or the uplink area in the first time unit, for example, if there are two downlink areas and two uplink areas in the first one of the first time units, the first time unit is divided in the same manner Downstream area and upside area.

In the embodiment of the present invention, the first time unit includes N second time units, or the first time unit is one or more time slots, or one or more subframes, or one or more radio frames.

In the embodiment of the present invention, the first downlink signal is a downlink control channel using a downlink DCI format, or a downlink control channel using an uplink DCI format.

In the embodiment of the present invention, when the first downlink signal is used to determine at least a downlink area corresponding to the downlink detection location, the first downlink signal is a downlink DCI format (ie, bearer downlink scheduling signaling). The downlink control channel may be UE-specific or may be common to a group of UEs or all UEs;

When the first downlink signal is used to determine an uplink region corresponding to the downlink detection location, if the uplink region is detected in a downlink region corresponding to the downlink detection location or the downlink detection location The uplink area scheduled by using the downlink control channel of the uplink DCI format, where the first downlink signal is the downlink control channel using the uplink DCI format (that is, carrying uplink scheduling signaling), if the uplink area is used for And transmitting, by using the downlink DCI format corresponding to the downlink transmission, that is, the bearer uplink scheduling, where the downlink downlink ACK/NACK feedback information is transmitted in the downlink area corresponding to the downlink detection location. The downlink control channel of the signaling, the downlink control channel may be UE-specific, or may be common to a group of UEs or all UEs.

Based on the same inventive concept, in the embodiment of the present invention, the processing flow of the base station side in the downlink transmission process is as shown in FIG. 4, and the details are as follows:

Step 401: The base station determines a downlink detection location in the first time unit.

In the embodiment of the present invention, the base station determines the downlink detection location in the first time unit, including but not limited to the following implementation manners:

In a first mode, the base station determines a downlink detection location in the first time unit, and notifies the terminal of the downlink detection location in the first time unit by using the high layer signaling;

Manner 2: the base station determines, according to a pre-arrangement with the terminal, a downlink detection location in the first time unit;

In a third mode, the base station sends a second downlink signal at a specific location in each or a specific first time unit, for Knowing that the first time unit of the second downlink signal is detected by the terminal or the N1 first time units starting from the first time unit of the second downlink signal or the N2 first time after detecting the first time unit of the second downlink signal A downlink detection position in a time unit, where N1, N2 are integers greater than or equal to 1.

For example, in a third implementation, the base station transmits a second downlink signal on the first Y symbols in each or a particular first time unit, or selects from a starting position in each or a particular first time unit. One location transmits a second downlink signal. If the second downlink signal is sent in each first time unit, the downlink detection position may be changed for each first time unit, for example, the downlink detection position of the second first time unit may be the first The downlink detection position of a time unit is different, that is, the downlink detection position of each first time unit is independently indicated; if the second downlink signal is sent in a specific first time unit, the second downlink signal is periodic or intermittent. Sently transmitted, for example, assuming that the second downlink signal is transmitted once every four first time units, assuming that the first time unit i and the first time unit i+4 transmit and transmit the second downlink signal, the two first time The downlink detection positions indicated by the second downlink signal sent by the unit may be the same or different. In one implementation manner, the first time unit i to the first time unit i+3 are all sent according to the first time unit i. The second downlink signal determines its downlink detection position, and the first time unit i+4 to the first time unit i+7 are all determined according to the second downlink signal sent in the first time unit i+4. The downlink detection location is another implementation manner: only the first time unit i, the first time unit i+4, the first time unit i+8, and the like, the first time unit includes the downlink detection position, and the rest If the downlink detection location is not included in the first time unit, the uplink and downlink area division in the first time unit may refer to the first time unit including the downlink detection location in front of the first time unit or work in the default uplink and downlink area division manner or It is determined according to the previously received configuration signaling or the first downlink signal.

In a specific implementation manner of the third mode, if the first downlink signal is used to notify the size of the downlink area in the first time unit, the second downlink signal is further used to notify the location of the uplink area in the first time unit and/or Or the size; if the first downlink signal is used to notify the size of the uplink area in the first time unit, the second downlink signal is further used to notify the location and/or size of the downlink area in the first time unit.

In the embodiment of the present invention, the downlink detection location is a location of a specific second time unit in the first time unit, where the second time unit is smaller than the first time unit.

Specifically, the second time unit is A symbols, or B mini-slots, or C slots, or D subframes; wherein the mini-slot is a minimum scheduling unit, and a mini-slot includes E symbols, A slot contains one or more mini-slots, one sub-frame containing one or more slots, and A, B, C, D, and E are pre-configured or predefined values greater than or equal to one. It should be noted that the symbols described herein may be OFDM symbols or SC-FDMA symbols or other multiple access symbols.

Step 402: The base station sends a first downlink signal to the downlink detection location in the first time unit, to notify the terminal to determine, according to the first downlink signal, a downlink region corresponding to the downlink detection location and/or corresponding to the downlink region. Upstream area.

In a specific implementation, after the base station determines the downlink detection location in the first time unit, before the downlink detection location in the first time unit sends the first downlink signal, the base station performs before the downlink detection location. The neighboring area interference measurement determines the neighboring area interference strength and the neighboring area interference area, and determines the size of the first GP area according to the neighboring area interference strength and the neighboring area interference area, where the first GP area is to avoid the neighboring area Interference required GP area; and/or the base station determines a time advance TA value of the terminal performing uplink transmission in the uplink area after the downlink detection position, and determining the second GP area according to the maximum value of the TA values of the terminal The size of the second GP area is the GP area required to avoid uplink and downlink interference.

Based on the specific implementation manner, the base station adjusts a downlink region corresponding to the downlink detection location and/or an uplink region corresponding to the downlink detection location according to a size of the first GP area and/or a size of the second GP area. Optionally, the base station notifies the neighboring base station of the size of the first GP area.

The first downlink signal carries the size of the downlink area corresponding to the downlink detection location, and/or carries the size of the uplink area corresponding to the downlink detection location, and/or carries the GP area. a size, a size of the GP area being a size of the first GP area and/or the second GP area or a GP area determined according to a size of the first GP area and/or the second GP area the size of.

Specifically, the first downlink signal carries the cutoff position of the downlink area, and the downlink detection location or the downlink detection location or the first time in the N3 first time units after the first time unit a downlink starting position in the N3 first time units subsequent to the unit as a starting position of the downlink area;

or,

The first downlink signal carries a cutoff position of the guard interval GP area, and the cutoff position of the GP area As a starting position of the uplink area, determining a position and/or a size of the uplink area according to a starting position of the uplink area and a preset cutoff position of the uplink area.

In the embodiment of the present invention, the size of the downlink area is the length of the downlink area (that is, the length of time for detecting the downlink control channel), or the length of time of the downlink area that needs to be monitored; or the downlink detection location corresponds to The downlink area is a downlink area starting from the downlink detection location, and/or a downlink detection location in the N3 first time units after the first time unit (for example, the target in the first time unit) a downlink detection location having the same relative position in a time unit) or a downlink start position in the N3 first time units after the first time unit (eg, a downlink start configured or defined in the target first time unit) Position, the target first time unit may not include a downlink detection location, but only a downlink start location, where the downlink start location is used to determine a downlink region, or the target first time unit may also include a downlink The detection location, the downlink detection location and the downlink start location may be different) the starting downlink region; or the downlink detection location corresponds to The uplink area is an uplink area scheduled by using the downlink control channel of the uplink DCI format detected at the downlink detection location, and may be, for example, an uplink area in the same time unit as the downlink detection location, or The uplink area in the time unit after the time unit in which the downlink detection location is located, the scheduling relationship is pre-defined or notified in the downlink control channel, or the uplink DCI detected in the downlink area corresponding to the downlink detection location The uplink area scheduled by the downlink control channel of the format, or the uplink area for transmitting the ACK/NACK feedback information of the downlink transmission in the downlink area corresponding to the downlink detection location.

In the embodiment of the present invention, the first time unit includes N second time units, or the first time unit is one or more time slot slots, or one or more subframes, or one or more radio frames.

Based on the same inventive concept, in the embodiment of the present invention, the processing flow of the terminal side in the downlink transmission process is as shown in FIG. 5, and the details are as follows:

Step 501: The terminal determines a downlink detection location in the first time unit.

The specific manner of determining the downlink detection location in the first time unit is the same as that in step 301. For details, refer to the detailed description of step 301, which is not repeated here.

Step 502: The terminal determines, by using blind detection, a downlink area corresponding to the downlink detection location and/or an uplink zone corresponding to the downlink detection location.

Specifically, the terminal determines, by using blind detection, a downlink area corresponding to the downlink detection location, where the terminal detects the received power of the signal on each symbol or mini-slot or second time unit from the downlink detection location. Determining, as the cutoff position of the downlink area, the first received power is less than the preset threshold, and determining the downlink detection position or the downlink detection position in the N3 first time units after the first time unit or The downlink start position is used as the start position of the downlink region.

Specifically, the terminal determines, by using the blind detection, the uplink area corresponding to the downlink detection location, where the terminal starts to detect the downlink control channel from the downlink detection location, according to the detected downlink control channel or the downlink control. The uplink feedback resource size and/or the uplink shared channel resource size indicated in the channel determine an uplink region.

For example, if the downlink control channel of the downlink DCI format is used, and the size and location of the uplink feedback resource that carries the ACK/NACK is indicated in the downlink control channel, the area is the corresponding uplink area, or the downlink control channel is not indicated. The location of the uplink feedback resource carrying the ACK/NACK, the feedback location is determined according to a predefined feedback timing, and the feedback resource size may be notified by the downlink control channel, or is predefined or configured, and the corresponding uplink may also be determined. For example, if the uplink control channel of the uplink shared channel is used, and the uplink resource location and size of the uplink shared channel are indicated, the corresponding uplink region may be determined according to the indicated uplink resource.

Based on the same inventive concept, in the embodiment of the present invention, the processing flow of the base station side in the downlink transmission process is as shown in FIG. 6, which is specifically as follows:

Step 601: The base station determines a downlink detection location in the first time unit.

For a specific implementation of the downlink detection location of the first time unit, the detailed description of the step 401 is not repeated here.

Step 602: The base station determines an uplink area and/or a downlink area corresponding to the downlink detection location in the first time unit according to an actual requirement, and performs corresponding data transmission and reception in the corresponding area.

Specifically, the base station sends the downlink transmission to the terminal in the downlink area corresponding to the downlink detection location, including transmitting the downlink control channel in the downlink DCI format, the downlink control channel in the uplink DCI format, and the downlink shared channel, and all the times occupied by the channels The cutoff position of the domain position is the cutoff position of the downlink area, and the downlink detection position or the downlink start position in the N3 first time units after the first line detection position or the first time unit is used as the downlink area The start position is such that when the terminal starts the blind detection signal from the downlink detection position, the received power exceeding the preset threshold can always be detected in the downlink region determined by the base station, thereby determining that the base station transmits the downlink region of the downlink transmission.

Specifically, when the base station sends a downlink transmission that needs to perform ACK/NACK feedback in the downlink area (for example, a downlink control channel or a downlink shared channel indicating downlink SPS resource release), the base station is in an uplink area corresponding to the downlink detection location. Receive uplink transmission of the terminal. For example, the base station sends a downlink control channel in the downlink DCI format that needs to perform ACK/NACK feedback, where the size and location of the uplink feedback resource carrying the ACK/NACK are indicated in the downlink control channel, and the area is the corresponding uplink area, or The location of the uplink feedback resource carrying the ACK/NACK is not indicated in the downlink control channel, and the location of the feedback resource is determined according to a predefined feedback timing, and the feedback resource size may be notified by the downlink control channel, or is predefined or If the configuration is performed, the corresponding uplink area may be determined. For example, the base station sends a downlink control channel using the uplink DCI format, where the uplink resource location and size of an uplink shared channel are indicated, and the uplink is indicated according to the uplink control channel. Resources can determine the corresponding Upstream area.

The downlink transmission process provided by the embodiment of the present invention is described in detail below through two specific embodiments.

First specific embodiment

As shown in FIG. 7, it is assumed that the length of a first time unit is one slot, one slot contains 7 OFDM symbols, and one subframe contains 2 slots; assuming that the length of a second time unit is One OFDM symbol; and, assuming a downlink to uplink switching time of 20 us, assuming that the length of one OFDM symbol is 66.7 us. It should be noted that the values of the parameters described herein are merely illustrative and are not intended to limit the range of values of the various parameters. The scope of protection of the present invention is not limited thereto.

Base station side:

The base station determines to divide a slot into an uplink area and a downlink area, and between the uplink area and the downlink area is a GP, wherein the uplink area is fixed as the last OFDM symbol of a slot, and the start position of the downlink area is fixed to one. The first OFDM symbol of the slot, that is, the downlink detection position is fixed to the first OFDM symbol of one slot. It should be noted that the uplink and downlink division manners described herein are merely illustrative, and the scope of protection of the present invention is not limited thereto.

The base station notifies the terminal of the uplink and downlink division manner of a slot by using high layer signaling or configuration information sent at a specific location. The configuration information sent by the specific location may be sent periodically, for example, in each slot or in the first N OFDM symbols in each subframe or multiple slots or multiple subframes, where the value of N is greater than or equal to 1 . Alternatively, the base station and the terminal may also be an uplink-downlink division manner that pre-arranges a slot, so that signaling is not required.

In this embodiment, the base station determines the GP size required in the current slot of the current subframe according to step A or step B or combining steps A and B, and further determines the size of the downlink region in the slot, where the size of the uplink region Fixed, specifically:

Step A: The base station determines how many terminals in the uplink area in the current slot need to send uplink data, and uses the maximum value of the Timing Advance (TA) value of each terminal that needs to send uplink data. Determine the TA value of GP1;

Step B: The base station performs neighboring area interference measurement in the uplink area before the current slot, and obtains the strength of the neighboring area interference. According to the strength, it is determined whether the GP2 for the neighboring area interference needs to be reserved in the GP part, and the base station can according to the GP2. Adjusting the downlink area of the cell, or the base station may adjust the downlink area of the cell according to the GP2, and notify the neighboring base station to which the measured interference belongs to the GP2, and the neighboring base station adjusts the uplink or downlink of the neighboring area according to the GP2. The area is to avoid the interference of the neighboring area, or the base station may not directly consider the GP2 when determining the GP and the downlink area of the current cell, and directly notify the GP2 to the neighboring base station to which the measured interference belongs, and the neighboring base station according to the GP2 according to the GP2 Adjust the downlink area of the neighboring area to avoid the interference of the downlink area of the neighboring area to the uplink of the area.

In the first embodiment, if it is determined only according to step A (for example, the base station predicts that there is no neighboring area interference), the base station does not need to perform the process of step B, and only needs to determine an integer number of OFDMs that meet the requirements according to the GP1 obtained in step A. The symbol is used as the actual GP. For example, if it is determined that the maximum TA is 45us according to step A, it is determined that the length of GP1 is 45us, and the switching time of 20us needs to be reserved. 65us needs to be reserved, rounded up, and 1 OFDM symbol is needed as the actual GP. Therefore, the downlink area is determined to be 5 OFDM symbol sizes, that is, the 1st to 5th OFDM symbols are downlink areas.

In the second embodiment, if it is determined only according to step B (for example, the base station predicts that there is no TA), the base station does not need to perform the process of step A, and only needs to determine an integer number of OFDM symbols satisfying the requirement according to the GP2 obtained in step B as actual. GP, for example, if it is determined according to step B that there is strong interference exceeding the threshold, and the duration of the strong interference is 75 us, it is determined that the length of the GP2 is 75 us, and the switching time of 20 us needs to be reserved, then 95us needs to be reserved, and the upward is taken. In the whole, two OFDM symbols are required as the actual GP, so that the downlink region is determined to be 4 OFDM symbol sizes, that is, the first to fourth OFDM symbols are downlink regions.

In the third embodiment, if it is determined according to steps A and B at the same time, according to GP1+GP2, an integer number of OFDM symbols satisfying the requirement is determined as the actual GP, for example, it is assumed that the length of the GP1 is 45us according to step A, and the length of the GP2 is determined according to step B. For the 75us, the switchover time of 20us is also required. For a total of 150us, the uplink is rounded up. Three OFDM symbols are needed as the actual GP, so that the downlink region is determined to be 3 OFDM symbols, that is, the first to third. The OFDM symbol is a downlink area.

For any of the first to third embodiments, the determined value of GP1 and/or GP2 may also be 0. For example, if there is no uplink terminal in the uplink area, the uplink data needs to be sent, and GP1=0, the interference measurement does not exist. When strong interference is detected, GP2=0.

The base station sends the downlink signal 1 on the specific resource in the current slot, and informs the terminal of the downlink area size in the slot through the downlink signal 1, so that the GP size is implicitly notified when the uplink area is fixed, or the downlink signal is passed. 1 directly notifying the terminal to determine the GP size, so that the size of the downlink area is implicitly notified when the uplink area size is fixed; it is assumed that the downlink signal 1 occupies only 1 OFDM symbol transmission (the method of occupying A OFDM symbol transmission is similar) The base station transmits the downlink signal 1 on the first OFDM symbol of each slot (which can occupy the fixed frequency domain position, or if it is carried in the downlink control channel), but becomes the first A OFDM symbol of a slot as the downlink detection location. The downlink control channel may be a downlink control channel that uses the downlink DCI format, and may be shared by all terminals or some terminals, or may be terminal-specific bearer downlink scheduling. Downlink control channel for signaling; of course, downlink signal 1 can also be broadcasted in a specific manner A fixed manner on the transmission, or independent data scheduling feedback relationship with relationships).

In this specific embodiment, the base station repeats the foregoing method for each slot in each subframe, and the GP lengths required for different slots may be different, so the downlink region size indicated by the downlink signal 1 may be different.

In this embodiment, the base station sends a downlink control channel in the downlink DCI (Downlink Control Information) format in the downlink area of each slot, and sends the downlink sharing scheduled by the downlink control channel in the downlink area. a channel, further in an uplink region corresponding to the ACK/NACK feedback carrying the downlink shared channel (the uplink region may be agreed or configured or indicated as an uplink region in the current slot, and may also be agreed or configured Or, the uplink area in the next slot is indicated, and the uplink area in the current slot is taken as an example in FIG. 7 to receive ACK/NACK feedback; the base station sends the downlink control channel in the uplink DCI format in a downlink area, And in the uplink area scheduled by the downlink control channel, the uplink area may be agreed or configured or indicated as an uplink area in the current slot, and may also be agreed or configured or indicated as an uplink area in the next slot. The corresponding relationship is the uplink area in the current slot. In addition, the uplink area where the ACK/NACK feedback transmission of the downlink shared channel scheduled by the downlink control channel using the downlink DCI format transmitted in the same downlink area is located, and the uplink is used. The uplink area in which the uplink shared channel transmission scheduled by the DCI format downlink control channel is located may be the same or different) receiving the uplink shared channel.

Terminal side:

The terminal receives the high layer signaling or receives the configuration information at a specific location. Specifically, the terminal may periodically receive the high layer signaling or the configuration information. The terminal acquires the downlink detection location and the uplink region division information in each slot carried in the high-layer signaling, or the terminal acquires the downlink detection location and the uplink region division information in each slot carried in the configuration information; It is also possible to obtain the downlink detection location and the uplink region division information in each slot according to a pre-agreed, so that it is not necessary to receive high layer signaling or configuration information.

The terminal receives the downlink signal 1 on the specific resource of the slot 0 of the subframe i, so as to obtain the downlink region size in the slot; it is assumed that the downlink signal 1 occupies only 1 OFDM symbol transmission (the method of occupying A OFDM symbol transmission is similar, only However, the first A OFDM symbol becomes a downlink detection position, and the terminal receives the downlink signal 1 on the first OFDM symbol of each slot (the downlink signal 1 can occupy a fixed frequency domain position, or if the downlink signal 1 is carried in the downlink control channel, and is detected in the search space according to the definition of the search space of the downlink control channel. The downlink control channel may be a downlink control channel using the downlink DCI format, which may be shared by all terminals or some terminals, or may be The terminal-specific downlink control channel carrying the downlink scheduling signaling; of course, the downlink signal 1 can also be sent in a fixed manner on a specific resource in a broadcast manner, irrespective of the data scheduling relationship or the feedback relationship, and is determined according to the same transmission mode on the transmitting side of the base station. The size of the downlink area. If the downlink signal 1 directly informs the size of the downlink area in the slot, then If the size of the UL area is fixed, the GP size may be implicitly determined according to the downlink area size, or if the downlink signal 1 directly informs the determined GP size, the downlink may be implicitly determined according to the GP size when the UL area size is fixed. The size of the area.

In implementation, the terminal repeats the above method for each slot in each subframe to determine the size of the downlink region in each slot, and the size of the downlink region in different slots may be different.

The terminal detects the downlink control channel in the determined downlink area of each slot, and when detecting the downlink control channel using the downlink DCI format, receives the downlink shared channel scheduled by the downlink control channel, and further uses the downlink shared channel in the downlink area. In the uplink area where the ACK/NACK feedback is performed (the uplink area may be agreed or configured or indicated as the uplink area in the current slot, and may also be agreed or configured or indicated as the uplink area in the next slot, and only the corresponding relationship in FIG. 7 For the uplink area in the current slot as an example, transmitting ACK/NACK feedback information of the downlink shared channel; When the downlink control channel in the uplink DCI format is detected, the uplink region scheduled by the downlink control channel (the uplink region may be agreed or configured or indicated as the uplink region in the current slot, and may also be agreed or configured or indicated as the next region. In the uplink area of the slot, the uplink area in the current slot is only taken as an example in FIG. 7; in addition, the ACK of the downlink shared channel scheduled by the downlink control channel in the downlink DCI format transmitted in the same downlink area is used. The uplink area where the NACK feedback transmission is located may be the same as or different from the uplink area in which the uplink shared channel transmission scheduled by using the downlink control channel of the uplink DCI format is transmitted.

In this embodiment, if a slot includes two uplink areas and two downlink detection positions, as shown in FIG. 8, the specific base station and the terminal implementation process are similar, except that the base station needs to detect each downlink in each slot. The location sends a downlink signal 1 indicating the size of the downlink region at which the downlink detection location starts. The terminal needs to receive the downlink signal 1 at multiple downlink detection locations in a slot, and obtain the downlink region size starting from the downlink detection location; The same is true when the time unit is one subframe or other time unit.

Second specific embodiment

As shown in FIG. 9, it is assumed that the length of one first time unit is one slot, one slot contains 7 OFDM symbols, and one subframe contains 2 slots; assuming that the length of one second time unit is one OFDM symbol; It is assumed that the switching time of the downlink to the uplink is 20 us, and the length of one OFDM symbol is 66.7 us. It should be noted that the values of the parameters described herein are only examples and are not used to limit the value range of each parameter. The scope of protection of the invention is not limited thereby.

Base station side

The base station side determines that one slot is divided into one uplink area and one downlink area, and the uplink area and the downlink area are GPs. The downlink area is fixed to the first two OFDM symbols of one slot, and the start position of the downlink area is fixed to The first OFDM symbol of a slot (ie, the downlink detection position), assuming that the cutoff position of the uplink region is the last OFDM/SC-FDMA symbol of a slot, of course, for example only, the scope of protection of the present invention is not This is a limitation. Other uplink and downlink division modes are similar to the implementation process of this implementation, and are not described here.

The base station notifies the uplink and downlink partitioning mode of the terminal slot by the high layer signaling or the configuration information sent at the specific location, where the configuration information sent by the specific location may be periodically sent, for example, each slot or each subframe or multiple slots or The first N OFDM symbols are sent on the first N OFDM symbols, and N is 1 or 2; of course, the terminal and the base station can pre-agreed the uplink and downlink division manner so that no signaling is needed.

In this embodiment, the base station determines the GP size required in the current slot of the current subframe according to step A or step B or combines steps A and B, and further determines the size of the uplink region in the slot, and the size of the downlink region is fixed. specifically:

Step A: The base station determines how many terminals in the uplink area in the current slot need to send uplink data, and takes the maximum value of the TA values of each terminal that needs to send uplink data as the TA value of determining GP1;

Step B: The base station performs neighboring area interference measurement in the uplink area before the current slot, and obtains the strength of the neighboring area interference. According to the strength, it is determined whether the GP part reserved area is used for GP2 against the neighboring area interference, and the base station can adjust the uplink area of the current cell according to the GP2, and the base station can also notify the GP2 while adjusting the uplink area of the current cell according to the GP2. The neighboring base station to which the measured interference belongs, the neighboring base station adjusts the uplink or downlink area of the neighboring area according to the GP2 to avoid neighboring area interference, or the base station may also consider GP2 when determining the GP and the uplink area of the current cell, And directly, the GP2 notifies the neighboring base station to which the measured interference belongs, and the neighboring base station adjusts at least the downlink area of the neighboring area according to the GP2 to avoid interference of the downlink area of the neighboring area to the uplink of the area.

In the first embodiment, if it is determined only according to step A (for example, the base station predicts that there is no neighboring cell interference), the base station does not need to perform the process of step B, and only needs to determine the integer number of OFDM/s that meet the requirement according to the GP1 obtained in step A. The SC-FDMA symbol is used as the actual GP. For example, if it is determined according to step A that the maximum TA is 45us, it is determined that the length of the GP1 is 45us, and the switching time of 20us needs to be reserved, then 65us needs to be reserved, and rounded up, and one is needed. The OFDM symbol is used as the actual GP, so that the uplink region is determined to be 4 symbol sizes, that is, the 4th to 7th OFDM/SC-FDMA symbols are uplink regions.

In the second embodiment, if it is determined only according to step B (for example, the base station predicts that there is no TA), the base station does not need to perform the process of step A, and only needs to determine the integer number of OFDM/SCs that meet the requirements according to the GP2 obtained in step B. The FDMA symbol is used as the actual GP. For example, if it is determined according to step B that there is strong interference exceeding the threshold, and the duration of the strong interference is 75 us, the length of the GP2 is determined to be 75 us, and the switching time of 20 us is also required. Leave 95us, round up, and need 2 OFDM symbols as the actual GP, so that the uplink region is determined to be 3 symbol sizes, that is, the 5th to 7th OFDM/SC-FDMA symbols are downlink regions.

In the third embodiment, if it is determined according to steps A and B at the same time, according to GP1+GP2, an integer number of OFDM symbols satisfying the requirement is determined as the actual GP, for example, if it is determined according to step A, the length of the GP1 is 45us, and according to step B, it is determined. The length of the GP2 is 75us, and the switchover time of 20us is also required. For a total of 150us, a total of 150us is reserved and rounded up. Three OFDM symbols are needed as the actual GP, so that the uplink area is determined to be two symbol sizes, that is, the sixth to seventh. The OFDM/SC-FDMA symbols are the downlink regions.

GP1 and GP2 may also be 0 according to the determination result. For example, if there is no terminal in the uplink area and the uplink data needs to be sent, GP1=0, and no strong interference is detected in the interference measurement, then GP2=0.

The base station sends a downlink signal 1 to the specific resource in the downlink area for scheduling the uplink area in the current slot, and notifies the size of the uplink area in the slot, so that the GP size is implicitly notified when the size of the downlink area is fixed; or directly The GP size determined above is notified, so that the size of the uplink area is implicitly notified when the size of the downlink area is fixed. It is assumed that the downlink signal 1 occupies only one OFDM symbol transmission (the method of occupying A OFDM symbol transmission is similar, but only becomes the first A OFDM symbol of one slot as the downlink detection position), assuming that the downlink region in the previous slot is used. After scheduling the uplink area in a slot, the base station sends a downlink signal 1 on the first OFDM symbol in the previous slot (can occupy a fixed frequency domain position, or if the bearer is in the downlink control channel, according to the downlink control channel The search space definition is sent in the search space, and the downlink control channel can be used to use the downlink DCI grid. The downlink control channel may of course be a downlink control channel using the uplink DCI format. Specifically, if the uplink region is used for ACK/NACK feedback for downlink transmission in the downlink region, the downlink control channel may be used. The downlink control channel of the downlink DCI format, if the uplink area is used for uplink shared channel transmission, the downlink control channel may be a downlink control channel using an uplink DCI format (ie, a downlink control channel for scheduling uplink shared channel transmission) If the same downlink area has the above functions, both of the downlink control channels can be used as the downlink signal 1, or one of them can be used as the downlink signal 1. The downlink control channel can be shared by all terminals or some terminals. It may be a terminal-specific downlink control channel carrying downlink scheduling signaling; of course, the downlink signal 1 may also be sent in a fixed manner on a specific resource in a broadcast manner, irrespective of a data scheduling relationship or a feedback relationship, for notifying the current slot. Upstream area size.

The base station repeats the above method for each slot in each subframe, and the GP lengths required for different slots may be different, so the size of the uplink region indicated by the downlink signal 1 may be different.

The base station sends a downlink control channel using the downlink DCI format in the downlink area of each slot, and sends the downlink shared channel scheduled by the downlink control channel in the downlink area, and further carries the ACK/NACK corresponding to the downlink shared channel. The uplink area of the feedback (the uplink area may be agreed or configured or indicated as the uplink area in the current slot, and may also be agreed or configured or indicated as the uplink area in the next slot. In FIG. 9, only the corresponding relationship is the next slot. The uplink area is an example of receiving ACK/NACK feedback; the base station transmits a downlink control channel using the uplink DCI format in a downlink region, and is in an uplink region scheduled by the downlink control channel (the uplink region may be agreed or configured or indicated as The uplink area in the current slot may also be agreed or configured or indicated as the uplink area in the next slot. In FIG. 9, only the uplink area in the next slot is taken as an example; in addition, it is sent in the same downlink area. Uplink region where the ACK/NACK feedback transmission of the downlink shared channel scheduled by the downlink control channel of the downlink DCI format is used Uplink using an uplink region and a downlink control channel DCI format scheduled uplink shared channel transmission is performed may be the same or different) receiving the uplink shared channel.

Terminal side

The terminal receives the high layer signaling or receives the configuration information at a specific location (which may be periodic reception), and obtains the downlink detection location and the downlink region division in each slot carried in the high layer signaling or the configuration information, and the deadline of the uplink region. Location; of course, the terminal may also obtain the downlink detection location and the downlink region division in the slot and the cutoff location of the uplink region according to a pre-agreed, so that it is not necessary to receive high layer signaling or configuration information.

The terminal receives the downlink signal 1 on a specific resource in the downlink region of the uplink region in the slot 0 for scheduling the subframe i, thereby obtaining the uplink region size in the slot 0 of the subframe i; and assuming that the downlink signal 1 occupies only one OFDM symbol Transmission (the method of occupying A OFDM symbol transmission is similar, except that the first A OFDM symbols of one slot are used as downlink detection positions), and the terminal receives on a specific resource in the downlink region in slot 1 in the previous subframe. Downlink signal 1 (can occupy a fixed frequency domain position, or if it is carried in the downlink control channel, is detected in the search space according to the search space definition of the downlink control channel, and the downlink control channel can be downlink control using the downlink DCI format The channel, of course, may also be a downlink control channel using the uplink DCI format. Specifically, if the uplink region is used for ACK/NACK feedback for downlink transmission in the downlink region, the downlink control channel may be in the downlink DCI format. a downlink control channel, if the uplink area is used for uplink shared channel transmission, the downlink control channel may be a downlink control channel using an uplink DCI format (ie, a downlink control channel for scheduling uplink shared channel transmission), if the same If the downlink area has the above functions, the two downlink control channels may be used as the downlink signal 1 or one of the downlink control signals may be used as the downlink signal 1. The downlink control channel may be shared by all terminals or some terminals, or may be exclusive to the terminal. The downlink control channel carrying the downlink scheduling signaling; of course, the downlink signal 1 can also be sent in a fixed manner on a specific resource in a broadcast manner, irrespective of the data scheduling relationship or the feedback relationship, so that the downlink is determined according to the same transmission mode on the transmitting side of the base station. Area size, if the downlink signal 1 is directly connected If the size of the uplink area in the slot is fixed, the GP size may be implicitly determined according to the size of the uplink area, or if the downlink signal 1 directly informs the determined GP size, the size of the downlink area is fixed. The size of the uplink area can be implicitly determined according to the GP size.

The terminal detects the downlink control channel in the determined downlink area of each slot, and when detecting the downlink control channel using the uplink DCI format, receives the downlink shared channel scheduled by using the downlink control channel of the downlink DCI format, further in the downlink area. Corresponding uplink area for performing ACK/NACK feedback (the uplink area may be agreed or configured or indicated as an uplink area in the current slot, and may also be agreed or configured or indicated as an uplink area in the next slot, only in FIG. 9 The ACK/NACK feedback information of the downlink shared channel is transmitted by using the uplink information in the next slot as an example. When the downlink control channel in the uplink DCI format is detected, the uplink region scheduled by the downlink control channel is used. The uplink area may be configured or indicated as the uplink area in the current slot, or may be agreed or configured or indicated as the uplink area in the next slot. In FIG. 9, only the corresponding relationship is the uplink area in the next slot. In addition, the downlink shared signal scheduled by the downlink control channel of the downlink DCI format transmitted in the same downlink area The uplink area where the ACK/NACK feedback transmission of the channel is located may be the same as or different from the uplink area where the uplink shared channel transmission scheduled by using the downlink control channel of the uplink DCI format is transmitted.

In this embodiment, if a slot is divided into two uplink areas and two downlink detection locations, as shown in FIG. 10, the specific base station and terminal implementation processes are similar, except that the base station needs to be targeted for each slot. The downlink detection location sends a downlink signal 1 indicating the size of the uplink region corresponding to the downlink detection location, and the terminal needs to receive the downlink signal 1 in multiple downlink detection locations in a slot, and obtain the uplink region size corresponding to the downlink detection location; Suppose a first time unit is a sub-frame or other time unit.

Further, if the size of the uplink area and the downlink area are simultaneously adjusted according to GP1 and GP2, it is a combination of the first embodiment and the second embodiment, and the only difference is that the size of the downlink area and the uplink area are not fixed at this time. When dividing the uplink and downlink areas, the base station may only notify or agree on the downlink detection location (ie, the downlink in one time unit). The start position) and the uplink end position, the uplink start position and the downlink end position are all related to the GP size, and can be simultaneously adjusted according to GP1 and/or GP2, and notify the terminal of the corresponding adjustment result by the downlink signal 1; The same side.

Based on the same inventive concept, a terminal is provided in the embodiment of the present invention. For the specific implementation of the terminal, refer to the description of the method embodiment. The repeated description is not repeated. As shown in FIG. 11, the terminal mainly includes:

The first processing module 1101 is configured to determine a downlink detection location in the first time unit, and detect a first downlink signal in a downlink detection location in the first time unit;

The second processing module 1102 is configured to determine, according to the first downlink signal, a downlink area corresponding to the downlink detection location and/or an uplink zone corresponding to the downlink detection location.

Detecting a second downlink signal at a specific position in each or a specific first time unit, determining, according to the second downlink signal, detecting the first time unit of the second downlink signal or detecting the second downlink signal N1 first time units starting with the first time unit or detecting downlink detection positions in the N2 first time units after the first time unit of the second downlink signal, where N1, N2 are greater than or equal to An integer of 1.

or,

Acquiring a starting position of the guard interval GP carried in the first downlink signal, and the downlink detecting position or the downlink detecting position in the N3 first time units after the first time unit or the first After the time unit The downlink start position in the N3 first time units is used as the start position of the downlink region, and the start position of the GP is determined as the cutoff position of the downlink region.

or,

Determining, according to the first downlink signal, a cutoff position of the guard interval GP area, using a cutoff position of the GP area as a start position of the uplink area, according to a start position of the uplink area and a preset The cutoff position of the up region determines the location and/or size of the up region.

Based on the same inventive concept, a base station is provided in the embodiment of the present invention. For the specific implementation of the base station, reference may be made to the related description of the method embodiment, and the repeated description is not repeated. As shown in FIG. 12, the base station mainly includes:

The processing module 1201 is configured to determine a downlink detection location in the first time unit;

The sending module 1202 is configured to send a first downlink signal in the downlink detection location in the first time unit, to notify the terminal to determine, according to the first downlink signal, a downlink area corresponding to the downlink detection location and/or Or an uplink area corresponding to the downlink area.

Transmitting, at a specific location in each or a specific first time unit, a second downlink signal, configured to notify the terminal to detect the first time unit of the second downlink signal or the first time of detecting the second downlink signal N1 first time units starting from the unit or downlink detecting positions in N2 first time units after detecting the first time unit of the second downlink signal, where N1, N2 are integers greater than or equal to 1.

In a possible implementation, the processing module is further configured to:

Notifying the neighboring base station of the size of the first GP area.

or,

Based on the same inventive concept, another terminal is provided in the embodiment of the present invention. For the specific implementation of the terminal, reference may be made to the related description of the method embodiment, and the repeated description is not repeated. As shown in FIG. 13, the terminal mainly includes:

The first processing module 1301 is configured to determine a downlink detection location in the first time unit;

The second processing module 1302 is configured to determine, by using blind detection, a downlink area corresponding to the downlink detection location and/or an uplink zone corresponding to the downlink detection location.

In another embodiment of the present invention, another base station is provided in the embodiment of the present invention. For the specific implementation of the base station, refer to the related description of the method embodiment, and the repeated description is not repeated. As shown in FIG. 14, the base station mainly includes:

The processing module 1401 is configured to determine a downlink detection location in the first time unit;

The sending module 1402 is configured to determine an uplink area and/or a downlink area corresponding to the downlink detection location in the first time unit according to actual requirements, and perform corresponding data transmission and reception in the corresponding area.

Another terminal is provided in the embodiment of the present invention. For the specific implementation of the terminal, reference may be made to the related description of the method embodiment, and the repeated description is not repeated. As shown in FIG. 15, the terminal mainly includes processing. The processor 1501 is configured to receive and transmit data under the control of the processor 1501, the memory 1502 stores a preset program, and the processor 1501 is configured to read the memory 1502. Program, according to the program to perform the following process:

In a possible implementation, the processor is specifically configured to:

Detecting, by the transceiver, a second downlink signal at a particular location in each or a particular first time unit, according to said Determining, by the second downlink signal, the first time unit that detects the second downlink signal or the N1 first time units that start the first time unit of the second downlink signal or detects the second downlink signal a downlink detection position in N2 first time units after the first time unit, where N1, N2 are integers greater than or equal to 1.

In a possible implementation, the processor is specifically configured to:

or,

In a possible implementation, the processor is specifically configured to:

or,

Or,

In a possible implementation manner, the size of the downlink area is the length of the downlink area, or the length of the downlink area that needs to be monitored; or the downlink area corresponding to the downlink detection location is: a downlink region where the location starts, and/or a downlink detection location in the N3 first time units after the first time unit or a downlink start position in the N3 first time units after the first time unit The downlink area corresponding to the downlink detection location is the downlink control channel that is detected by using the uplink DCI format detected in the downlink detection location or the downlink area corresponding to the downlink detection location. The uplink area, or the uplink area corresponding to the downlink detection location, is an uplink area for transmitting downlink transmission ACK/NACK feedback information in the downlink area corresponding to the downlink detection location.

In a possible implementation manner, the downlink detection location exists in each first time unit or only in a specific first time unit; if the downlink detection location exists only in a specific first time unit, For the first time unit in which the downlink detection location does not exist, or the first time unit in which the downlink detection location exists but the first downlink signal is not detected in the downlink detection location, refer to the presence of the downlink detection in front of the downlink detection location Positioning and detecting the division of the downlink region and/or the uplink region in the first time unit of the first downlink signal.

Another base station is provided in the embodiment of the present invention. For the specific implementation of the base station, reference may be made to the related description of the method embodiment, and the repeated description is not repeated. As shown in FIG. 16, the base station mainly includes processing. The processor 1601 is configured to receive and transmit data under the control of the processor 1601, the memory 1602 stores a preset program, and the processor 1601 is configured to read the memory 1602. Program, according to the program to perform the following process:

Determining a downlink detection position in the first time unit;

In a possible implementation, the processor is specifically configured to:

Transmitting, by the transceiver, a second downlink signal at a specific location in each or a specific first time unit, for notifying the terminal to detect the first time unit of the second downlink signal or detecting the second downlink signal First time list N1 first time units starting from a meta or a downlink detecting position in N2 first time units after detecting a first time unit of the second downlink signal, where N1, N2 are integers greater than or equal to 1.

In a possible implementation, the processor is specifically configured to:

After determining the downlink detection position in the first time unit, before the first downlink signal is sent by the transceiver in the downlink detection position in the first time unit,

In a possible implementation, the processor adjusts a downlink area corresponding to the downlink detection location and/or a downlink detection location according to a size of the first GP area and/or a size of the second GP area. Upstream area.

In a possible implementation, the processor instructs the transceiver to notify the neighboring base station of the size of the first GP area.

or,

The first downlink signal carries a start position of the guard interval GP area, and the downlink detection position or the downlink detection position or the first time in the N3 first time units after the first time unit a downlink start position in the N3 first time units subsequent to the unit as a start position of the downlink region, and a start of the GP region The position is determined as a cutoff position of the down zone;

or,

Another terminal is provided in the embodiment of the present invention. For the specific implementation of the terminal, reference may be made to the related description of the method embodiment, and the repeated description is not repeated. As shown in FIG. 17, the terminal mainly includes processing. The device 1701 is configured to receive and transmit data under the control of the processor 1701, the memory 1702 stores a preset program, and the processor 1701 is configured to read the memory 1702. Program, according to the program to perform the following process:

Determining a downlink detection position in the first time unit;

A downlink region corresponding to the downlink detection location and/or an uplink region corresponding to the downlink detection location are determined by blind detection.

Another base station is provided in the embodiment of the present invention. For the specific implementation of the base station, reference may be made to the related description of the method embodiment, and the repeated description is not repeated. As shown in FIG. 18, the base station mainly includes processing. The device 1801, the memory 1802, and the transceiver 1803, wherein the transceiver 1803 is configured to receive and transmit data under the control of the processor 1801, the memory 1802 stores a preset program, and the processor 1801 is configured to read the memory 1802. Program, according to the program to perform the following process:

Determining a downlink detection position in the first time unit;

The uplink area and/or the downlink area corresponding to the downlink detection location in the first time unit are determined according to actual requirements, and corresponding data is transmitted and received in the corresponding area.

15 to 18, the processor, the memory and the transceiver are connected by a bus, and the bus architecture may include any number of interconnected buses and bridges, specifically represented by one or more processors and memories represented by the processor. The various circuits of the memory are linked together. The bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein. The bus interface provides an interface. The transceiver can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium. The processor is responsible for managing the bus architecture and the usual processing, and the memory can store the data that the processor uses when performing operations.

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

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 flow and/or block of the flowchart illustrations and/or FIG. These computer program instructions can be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing device to produce a machine for the execution of instructions for execution by a processor of a computer or other programmable data processing device. Means for implementing the functions specified in one or more of the flow or in a block or blocks of the flow chart.

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

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

While the preferred embodiment of the invention has been described, it will be understood that Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and the modifications and

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

Claims

A downlink transmission method, comprising:

Determining, by the terminal, a downlink detection location in the first time unit, and detecting a first downlink signal in a downlink detection location in the first time unit;

The terminal determines, according to the first downlink signal, a downlink area corresponding to the downlink detection location and/or an uplink zone corresponding to the downlink detection location.
The method of claim 1, wherein the determining, by the terminal, the downlink detection location in the first time unit comprises:

Determining, by the terminal, a downlink detection location in the first time unit according to high layer signaling; or

Determining, by the terminal, a downlink detection location in the first time unit according to a pre-arrangement with the base station; or

The terminal detects a second downlink signal at a specific position in each or a specific first time unit, determines, according to the second downlink signal, a first time unit that detects the second downlink signal, or detects the first N1 first time units starting from the first time unit of the two downlink signals or downlink detecting positions in the N2 first time units after detecting the first time unit of the second downlink signal, where N1 and N2 are An integer greater than or equal to 1.
The method according to claim 2, wherein the second downlink signal is further used to notify the first time unit if the first downlink signal is used to notify a size of a downlink area in the first time unit. The location and/or size of the upstream region;

And if the first downlink signal is used to notify the size of the uplink area in the first time unit, the second downlink signal is further used to notify the location and/or size of the downlink area in the first time unit.
The method according to any one of claims 1 to 3, wherein the downlink detection position is a position of a specific second time unit in the first time unit, wherein the second time unit is smaller than The first time unit.
The method according to claim 4, wherein said second time unit is A symbols, or B mini-slots, or C slots, or D subframes; wherein said mini-slot is minimum A scheduling unit, a mini-slot containing E symbols, a slot containing one or more mini-slots, a sub-frame containing one or more slots, A, B, C, D, E being pre-configured or greater than or equal to Pre-defined values.
The method according to claim 1, wherein the terminal determines, according to the first downlink signal, a downlink area corresponding to the downlink detection location, including:

Obtaining, by the terminal, a cutoff position of the downlink area carried in the first downlink signal, and using the downlink detection location or a downlink detection location or location in the N3 first time units after the first time unit Determining a downlink starting position in the N3 first time units after the first time unit as a starting position of the downlink area;

Or,

Obtaining, by the terminal, a starting position of the guard interval GP carried in the first downlink signal, and using the downlink detecting position or a downlink detecting position or location in the N3 first time units after the first time unit The downlink start position in the N3 first time units after the first time unit is used as the start position of the downlink area, and the start position of the GP is determined as the cutoff position of the downlink area.
The method according to claim 1, wherein the terminal determines, according to the first downlink signal, an uplink area corresponding to the downlink detection location, including:

The terminal acquires a starting position of the uplink area carried in the first downlink signal, and determines a location of the uplink area according to a starting position of the uplink area and a preset cutoff position of the uplink area. And / or size;

or,

The terminal acquires a starting position of the uplink area and a cutoff position of the uplink area carried in the first downlink signal, and determines, according to a starting position of the uplink area and a cutoff position of the uplink area. State the location and/or size of the upstream region;

or,

The terminal acquires a start position of the uplink area and a length of the uplink area carried in the first downlink signal, and determines the uplink according to a start position of the uplink area and a length of the uplink area. The location and/or size of the area;

or,

Determining, by the terminal, a cutoff position of the guard interval GP area according to the first downlink signal, using a cutoff position of the GP area as a start position of the uplink area, according to a start position and a preset of the uplink area The cutoff position of the upstream region determines the location and/or size of the upstream region.
The method of claim 1 or 3 or 6 or 7, wherein the size of the downlink area is the length of time of the downlink area, or the length of time of the downlink area that needs to be monitored; or

The downlink area corresponding to the downlink detection location is a downlink area starting from the downlink detection location, and/or a downlink detection location or the first time in N3 first time units after the first time unit a downlink region starting from a downlink start position in N3 first time units after the unit; or

The uplink area corresponding to the downlink detection location is an uplink area scheduled by the downlink control channel detected by using the uplink DCI format detected in the downlink detection location or the downlink area corresponding to the downlink detection location, or The uplink area corresponding to the downlink detection location is an uplink area for transmitting downlink transmission ACK/NACK feedback information in the downlink area corresponding to the downlink detection location.
The method according to any one of claims 1 to 3, 5 to 7, wherein

The downlink detection location exists in each first time unit or only in a specific first time unit;

If the downlink detection location exists only in a specific first time unit, for the first time unit where the downlink detection location does not exist, or the downlink detection location exists but no detection is detected in the downlink detection location One The first time unit of the downlink signal refers to the division of the downlink area and/or the uplink area in the first time unit in which the downlink detection position exists and the first downlink signal is detected.
The method according to any one of claims 1 to 3, 5 to 7, wherein the first time unit comprises N second time units, or the first time unit is one or more A slot of time slots, either one or more subframes, or one or more radio frames.
The method according to any one of claims 1, 3, 6, and 7, wherein the first downlink signal is a downlink control channel using a downlink DCI format, or a downlink control channel using an uplink DCI format. .
A downlink transmission method, comprising:

Determining, by the base station, a downlink detection location in the first time unit;

The base station sends a first downlink signal to the downlink detection location in the first time unit, and is configured to notify the terminal to determine, according to the first downlink signal, a downlink area and/or a location corresponding to the downlink detection location. The uplink area corresponding to the downlink area.
The method of claim 12, wherein the determining, by the base station, the downlink detection location in the first time unit comprises:

Determining, by the base station, a downlink detection location in the first time unit, and notifying the downlink detection location in the first time unit to the terminal by using high layer signaling; or

Determining, by the base station, a downlink detection location in the first time unit according to a pre-arrangement with the terminal; or

The base station sends a second downlink signal at a specific position in each or a specific first time unit, to notify the terminal that the first time unit of the second downlink signal is detected or the second downlink signal is detected. N1 first time units starting with the first time unit or downlink detection positions in the N2 first time units after detecting the first time unit of the second downlink signal, where N1, N2 are greater than or equal to 1 The integer.
The method according to claim 13, wherein the second downlink signal is further used to notify the first time unit if the first downlink signal is used to notify a size of a downlink area in the first time unit. The location and/or size of the upstream region;

And if the first downlink signal is used to notify the size of the uplink area in the first time unit, the second downlink signal is further used to notify the location and/or size of the downlink area in the first time unit.
The method according to any one of claims 12 to 14, wherein the downlink detection location is a location of a specific second time unit in the first time unit, wherein the second time unit is less than The first time unit.
The method according to claim 15, wherein said second time unit is A symbols, or B mini-slots, or C slots, or D subframes; wherein said mini-slot is minimum A scheduling unit, a mini-slot containing E symbols, a slot containing one or more mini-slots, a sub-frame containing one or more slots, A, B, C, D, E being pre-configured or greater than or equal to Pre-defined values.
The method according to claim 12, wherein after the base station determines the downlink detection location in the first time unit, before the downlink detection location in the first time unit sends the first downlink signal, the The method also includes:

The base station performs neighboring area interference measurement before the downlink detection position, determines a neighboring area interference strength and a neighboring area interference area, and determines a first guard interval GP area according to the neighboring area interference strength and the neighboring area interference area. Size; and / or

The base station determines a time advance TA value of the terminal that performs uplink transmission in the uplink region after the downlink detection location, and determines a size of the second guard interval GP region according to the maximum value of the TA values of the terminal.
The method of claim 17 wherein the method further comprises:

The base station adjusts a downlink area corresponding to the downlink detection location and/or an uplink zone corresponding to the downlink detection location according to a size of the first GP area and/or a size of the second GP area.
The method of claim 17 wherein the method further comprises:

The base station notifies the neighboring base station of the size of the first GP area.
The method according to claim 18, wherein the first downlink signal carries a size of a downlink area corresponding to the downlink detection location, and/or carries an uplink area corresponding to the downlink detection location. Size, and/or carrying the size of the GP area, the size of the GP area being the size of the first GP area and/or the second GP area or according to the first GP area and/or the The size of the second GP area determines the size of the GP area.
The method of claim 20 wherein:

The first downlink signal carries a cutoff position of the downlink area, and the downlink detection location or the downlink detection location or the first time unit in the N3 first time units after the first time unit a downlink starting position in the following N3 first time units as a starting position of the downlink area;

or,

The first downlink signal carries a start position of the guard interval GP area, and the downlink detection position or the downlink detection position or the first time in the N3 first time units after the first time unit a downlink start position in the N3 first time units after the unit is used as a start position of the downlink area, and a start position of the GP area is determined as a cutoff position of the downlink area;

or,

The first downlink signal carries a start position of the uplink area, and determines a position and/or a size of the uplink area according to a start position of the uplink area and a preset cutoff position of the uplink area;

or,

The first downlink signal carries a start position of the uplink area and a cutoff position of the uplink area, and determines a location of the uplink area according to a start position of the uplink area and a cutoff position of the uplink area. And / or size;

or,

The first downlink signal carries a start position of the uplink area and a length of the uplink area, and determines a location of the uplink area according to a start position of the uplink area and a length of the uplink area. Or size

or,

The first downlink signal carries a cutoff position of the guard interval GP area, and the cutoff position of the GP area is used as a start position of the uplink area, according to the start position of the uplink area and the preset The cutoff position of the up region determines the location and/or size of the up region.
The method of claim 12 or 14 or 18 or 20 or 21, wherein the size of the downlink area is the length of time of the downlink area, or the length of time of the downlink area that needs to be monitored; or

The downlink area corresponding to the downlink detection location is a downlink area starting from the downlink detection location, and/or a downlink detection location or the first time in N3 first time units after the first time unit a downlink region starting from a downlink start position in N3 first time units after the unit; or

The uplink area corresponding to the downlink detection location is an uplink area scheduled by using the downlink control channel of the uplink DCI format detected in the downlink detection location or the uplink area corresponding to the downlink detection location, or The uplink area corresponding to the downlink detection location is an uplink area for transmitting downlink transmission ACK/NACK feedback information in the downlink area corresponding to the downlink detection location.
The method according to any one of claims 12 to 14, wherein the first time unit comprises N second time units, or the first time unit is one or more A slot of time slots, either one or more subframes, or one or more radio frames.
The method according to any one of claims 12, 14, 20, 21, wherein the first downlink signal is a downlink control channel using a downlink DCI format, or a downlink control channel using an uplink DCI format. .
A terminal, comprising:

a first processing module, configured to determine a downlink detection location in the first time unit, and detect a first downlink signal in a downlink detection location in the first time unit;

The second processing module is configured to determine, according to the first downlink signal, a downlink area corresponding to the downlink detection location and/or an uplink zone corresponding to the downlink detection location.
The terminal according to claim 25, wherein the first processing module is specifically configured to:

Determining, according to the high layer signaling, a downlink detection location in the first time unit; or

Determining a downlink detection location in the first time unit according to a pre-agreed with the base station; or

Detecting a second downlink signal at a specific position in each or a specific first time unit, determining, according to the second downlink signal, detecting the first time unit of the second downlink signal or detecting the second downlink signal N1 first time units starting with the first time unit or detecting downlink detection positions in the N2 first time units after the first time unit of the second downlink signal, where N1, N2 are greater than or equal to An integer of 1.
The terminal according to claim 26, wherein the second downlink signal is further used to notify the first time unit if the first downlink signal is used to notify a size of a downlink area in the first time unit. The location and/or size of the upstream region;

And if the first downlink signal is used to notify the size of the uplink area in the first time unit, the second downlink signal is further used to notify the location and/or size of the downlink area in the first time unit.
The terminal according to any one of claims 25 to 27, wherein the downlink detection position is a position of a specific second time unit in the first time unit, wherein the second time unit is smaller than The first time unit.
The terminal according to claim 28, wherein the second time unit is A symbols, or B mini-slots, or C slots, or D subframes; wherein the mini-slot is minimum A scheduling unit, a mini-slot containing E symbols, a slot containing one or more mini-slots, a sub-frame containing one or more slots, A, B, C, D, E being pre-configured or greater than or equal to Pre-defined values.
The terminal according to claim 25, wherein the second processing module is specifically configured to:

Obtaining a cutoff position of the downlink area carried in the first downlink signal, and using the downlink detection location or a downlink detection location in the N3 first time units after the first time unit or the first a downlink starting position in the N3 first time units after the time unit as a starting position of the downlink area;

or,

Acquiring a starting position of the guard interval GP carried in the first downlink signal, and the downlink detecting position or the downlink detecting position in the N3 first time units after the first time unit or the first The downlink start position in the N3 first time units after the time unit is used as the start position of the downlink region, and the start position of the GP is determined as the cutoff position of the downlink region.
The terminal according to claim 25, wherein the second processing module is specifically configured to:

Obtaining a starting position of the uplink area carried in the first downlink signal, determining a location of the uplink area according to a starting position of the uplink area and a preset cutoff position of the uplink area, and/or size;

or,

Obtaining a starting position of the uplink area and a cutoff position of the uplink area carried in the first downlink signal, and determining the uplink area according to a starting position of the uplink area and a cutoff position of the uplink area Location and / or size;

or,

Obtaining a starting position of the uplink area and a length of the uplink area carried in the first downlink signal, and determining a location of the uplink area according to a starting position of the uplink area and a length of the uplink area And / or size;

or,

Determining a cutoff position of the guard interval GP region according to the first downlink signal, and setting a cutoff position of the GP region The initial position of the uplink area is determined, and the position and/or size of the uplink area is determined according to a starting position of the uplink area and a preset cutoff position of the uplink area.
The terminal according to claim 25 or 27 or 30 or 31, wherein the size of the downlink area is the length of time of the downlink area, or the length of time of the downlink area that needs to be monitored; or

The downlink area corresponding to the downlink detection location is a downlink area starting from the downlink detection location, and/or a downlink detection location or the first time in N3 first time units after the first time unit a downlink region starting from a downlink start position in N3 first time units after the unit; or

The uplink area corresponding to the downlink detection location is an uplink area scheduled by the downlink control channel of the uplink DCI format detected in the downlink area corresponding to the downlink detection location, or the downlink The uplink area corresponding to the detection location is an uplink area for transmitting ACK/NACK feedback information of the downlink transmission in the downlink area corresponding to the downlink detection location.
The terminal according to any one of claims 25 to 27, 29 to 31, wherein

The downlink detection location exists in each first time unit or only in a specific first time unit;

If the downlink detection location exists only in a specific first time unit, for the first time unit where the downlink detection location does not exist, or the downlink detection location exists but no detection is detected in the downlink detection location A first time unit of a downlink signal refers to a partition of a downlink region and/or an uplink region in a first time unit in which the downlink detecting position exists and the first downlink signal is detected.
The terminal according to any one of claims 25 to 27, 29 to 31, wherein the first time unit comprises N second time units, or the first time unit is one or more A slot of time slots, either one or more subframes, or one or more radio frames.
The terminal according to any one of claims 25, 27, 30, and 31, wherein the first downlink signal is a downlink control channel using a downlink DCI format, or a downlink control channel using an uplink DCI format. .
A base station, comprising:

a processing module, configured to determine a downlink detection location in the first time unit;

a sending module, configured to send a first downlink signal in a downlink detection location in the first time unit, to notify the terminal to determine, according to the first downlink signal, a downlink area corresponding to the downlink detection location, and/or An uplink area corresponding to the downlink area.
The base station according to claim 36, wherein the processing module is specifically configured to:

Determining a downlink detection location in the first time unit, and notifying the downlink detection location in the first time unit to the terminal by using high layer signaling; or

Determining a downlink detection location in the first time unit according to a pre-arrangement with the terminal; or

Transmitting, at a specific location in each or a specific first time unit, a second downlink signal, configured to notify the terminal to detect the first time unit of the second downlink signal or the first time of detecting the second downlink signal Unit start N1 a first time unit or a downlink detection position in the N2 first time units after detecting the first time unit of the second downlink signal, where N1, N2 are integers greater than or equal to 1.
The base station according to claim 37, wherein the second downlink signal is further used to notify the first time unit if the first downlink signal is used to notify a size of a downlink area in the first time unit. The location and/or size of the upstream region;

And if the first downlink signal is used to notify the size of the uplink area in the first time unit, the second downlink signal is further used to notify the location and/or size of the downlink area in the first time unit.
The base station according to any one of claims 36 to 38, wherein the downlink detection location is a location of a specific second time unit in the first time unit, wherein the second time unit is smaller The first time unit.
The base station according to claim 39, wherein said second time unit is A symbols, or B mini-slots, or C slots, or D subframes; wherein said mini-slot is minimum A scheduling unit, a mini-slot containing E symbols, a slot containing one or more mini-slots, a sub-frame containing one or more slots, A, B, C, D, E being pre-configured or greater than or equal to Pre-defined values.
The base station according to claim 36, wherein the processing module is further configured to:

After determining the downlink detection location in the first time unit, before the sending module sends the first downlink signal in the downlink detection location in the first time unit,

Performing a neighboring area interference measurement before the downlink detection position, determining a neighboring area interference strength and a neighboring area interference area, and determining a size of the first guard interval GP area according to the neighboring area interference strength and the neighboring area interference area; and /or

Determining a timing advance TA value of the terminal performing uplink transmission in the uplink region after the downlink detection location, and determining a size of the second guard interval GP region according to a maximum value among the TA values of the terminal.
The base station according to claim 41, wherein the processing module is further configured to:

And adjusting a downlink region corresponding to the downlink detection location and/or an uplink region corresponding to the downlink detection location according to a size of the first GP area and/or a size of the second GP area.
The base station according to claim 41, wherein the sending module is further configured to:

Notifying the neighboring base station of the size of the first GP area.
The base station according to claim 41, wherein the first downlink signal carries a size of a downlink area corresponding to the downlink detection location, and/or carries an uplink area corresponding to the downlink detection location. Size, and/or carrying the size of the GP area, the size of the GP area being the size of the first GP area and/or the second GP area or according to the first GP area and/or the The size of the second GP area determines the size of the GP area.
A base station according to claim 44, wherein

The first downlink signal carries a cutoff position of the downlink area, and the downlink detection location or the first a downlink detection position in the N3 first time units after the time unit or a downlink start position in the N3 first time units after the first time unit as a start position of the downlink area;

or,

The first downlink signal carries a start position of the guard interval GP area, and the downlink detection position or the downlink detection position or the first time in the N3 first time units after the first time unit a downlink start position in the N3 first time units after the unit is used as a start position of the downlink area, and a start position of the GP area is determined as a cutoff position of the downlink area;

or,

The first downlink signal carries a start position of the uplink area, and determines a position and/or a size of the uplink area according to a start position of the uplink area and a preset cutoff position of the uplink area;

or,

The first downlink signal carries a start position of the uplink area and a cutoff position of the uplink area, and determines a location of the uplink area according to a start position of the uplink area and a cutoff position of the uplink area. And / or size;

or,

The first downlink signal carries a start position of the uplink area and a length of the uplink area, and determines a location of the uplink area according to a start position of the uplink area and a length of the uplink area. Or size

or,

The first downlink signal carries a cutoff position of the guard interval GP area, and the cutoff position of the GP area is used as a start position of the uplink area, according to the start position of the uplink area and the preset The cutoff position of the up region determines the location and/or size of the up region.
The base station according to claim 36 or 38 or 42 or 44 or 45, wherein the size of the downlink area is the length of time of the downlink area, or the length of time of the downlink area that needs to be monitored; or

The downlink area corresponding to the downlink detection location is a downlink area starting from the downlink detection location, and/or a downlink detection location or the first time in N3 first time units after the first time unit a downlink region starting from a downlink start position in N3 first time units after the unit; or

The uplink area corresponding to the downlink detection location is an uplink area scheduled by using the downlink control channel of the uplink DCI format detected in the downlink detection location or the uplink area corresponding to the downlink detection location, or The uplink area corresponding to the downlink detection location is an uplink area for transmitting downlink transmission ACK/NACK feedback information in the downlink area corresponding to the downlink detection location.
The base station according to any one of claims 36 to 38, 40 to 45, wherein the first time unit comprises N second time units, or the first time unit is one or more A slot of time slots, either one or more subframes, or one or more radio frames.
The base station according to any one of claims 36, 38, 44, 45, wherein said first downlink The signal is a downlink control channel using a downlink DCI format, or a downlink control channel using an uplink DCI format.
A terminal, comprising: a processor, a memory and a transceiver, wherein the transceiver is configured to receive and transmit data under the control of the processor, wherein the memory stores a preset program, and the processor is configured to read A program in memory that performs the following processes in accordance with the program:

Determining a downlink detection location in the first time unit, and detecting a first downlink signal in a downlink detection location in the first time unit;

Determining, according to the first downlink signal, a downlink area corresponding to the downlink detection location and/or an uplink zone corresponding to the downlink detection location.
A base station, comprising: a processor, a memory, and a transceiver, wherein the transceiver is configured to receive and transmit data under the control of the processor, wherein the memory stores a preset program, and the processor is configured to read A program in memory that performs the following processes in accordance with the program:

Determining a downlink detection position in the first time unit;

Transmitting, by the transceiver, the first downlink signal in the downlink detection position in the first time unit, to notify the terminal, according to the first downlink signal, to determine a downlink area and/or a location corresponding to the downlink detection location. The uplink area corresponding to the downlink area.