WO2016165079A1 - Method, apparatus and system for monitoring downlink control information - Google Patents

Abstract

Embodiments of the present invention relate to the field of communications. Disclosed are a method, apparatus and system for monitoring downlink control information, configured to reduce the power consumption of a UE. The method provided in the embodiments of the present invention comprises: a UE sends a last media access control (MAC) data packet, in this communication process, to a base station; determine a target time point when a target ACK message returned by the base station is received, wherein the target ACK message is an ACK message returned by the base station for the last MAC data packet; and enter, according to the target time point, a reduction DCI receiving mode, wherein in the reduction DCI receiving mode, anchor point DCI blocks are monitored, the anchor point DCI blocks are DCI blocks which are determined by the base station according to the target time point and can be configured to bear scheduling information about the UE, and two adjacent anchor point DCI blocks are spaced by one or more DCI blocks.

Description

Method, device and system for monitoring downlink control information Technical field

The present invention relates to the field of communications, and in particular, to a method, apparatus, and system for listening to DCI (Downlink Control Information).

Background technique

M2M (Machine-to-Machine, machine and machine) communication system, namely MTC (Machine-Type Communications), is an important direction for the development of mobile communication. It is widely used in many fields, such as intelligent transportation, building control systems, home intelligent control systems, video surveillance systems, industrial monitoring and so on.

The device that communicates with each other in the M2M system is an M2M device, and specifically includes: a UE (User Equipment, a base station), a base station, and the like. Among them, the power supply of the UE in the M2M system (for example, smart meter reading, etc.) is generally a battery; in addition, the number of UEs in one M2M system is very large, so the workload for replacing the battery of the M2M device in one system is very large. Therefore, power saving technology is crucial for UEs in M2M systems.

Currently, in the M2M system, after the end of the air interface transmission, the UE releases the air interface connection when receiving the explicit or implicit release command sent by the base station. The UE needs to continuously monitor the downlink control channel, that is, continuously monitors each DCI block to detect whether there is scheduling information for the UE before the air interface is released. Therefore, the UE consumes a large amount of power.

Summary of the invention

Embodiments of the present invention provide a method, apparatus, and system for monitoring downlink control information to reduce power consumption of a UE.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In a first aspect, a method for monitoring downlink control information DCI is provided, including:

The terminal device UE sends the last media access control MAC data packet in the current communication process to the base station;

Determining a target time point when receiving the target positive acknowledgement ACK message sent by the base station; wherein the target ACK message is an ACK message that the base station replies to the last MAC data packet;

Entering a reduced DCI receiving mode according to the target time point; wherein, in the reduced DCI receiving mode, listening to an anchor DCI block; wherein the anchor DCI block is determined by the base station according to the target time point A DCI block carrying scheduling information of the UE, where two adjacent anchor point DCI blocks are separated by one or more DCI blocks.

With reference to the first aspect, in a first possible implementation, if the base station replies to the at least two ACK messages for the last MAC data packet, the target ACK message is in the at least two ACK messages. The last ACK message.

With the first possible implementation of the first aspect, in a second possible implementation manner, after the sending, by the base station, the last MAC data packet in the current communication process, the method further includes:

Receiving, by the base station, the first ACK message replied to the last MAC data packet, if the first ACK message is received correctly, in the subsequent process, the base station is no longer received to reply to the last MAC data packet. The other ACK message; wherein the first ACK message is a non-last ACK message that the base station replies to the last MAC data packet;

The determining a target time point when receiving the target ACK message replied by the base station includes:

Determining a target time point when receiving the target ACK message replied by the base station according to a time point when the first ACK message is received.

With reference to the first aspect, the first possible implementation manner of the first aspect, or the second possible implementation manner, in a third possible implementation manner, when the Inter-point entry reduces DCI reception mode, including:

Determining an anchor point DCI block in each anchor point DCI listening period according to a preset parameter; wherein the preset parameter includes at least one of the following information: an identity identification number ID of the UE, an anchor point DCI listening period, The DCI interval of the coverage level in which the UE is located.

With reference to the third possible implementation manner of the foregoing aspect, in a fourth possible implementation manner, the anchor DCI listening period is: an integer multiple of a frame length of a super frame, or all coverage of the base station A common multiple of the level of DCI interval.

With reference to the third possible implementation manner of the first aspect, or the fourth possible implementation manner, in a fifth possible implementation manner, the preset parameters include an ID of the UE, an anchor DCI listening period, and a Determining the DCI interval of the coverage level of the UE; determining the anchor point DCI block in each anchor point DCI listening period according to the preset parameter, including:

Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period;

Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block.

With reference to the third possible implementation manner of the first aspect, or the fourth possible implementation manner, in a sixth possible implementation manner, the preset parameter includes an anchor DCI listening period; the determining according to the preset parameter Each anchor point DCI block in the DCI listening period of the anchor point includes:

The DCI block at the end time of the first preset time period from the time point of entering the reduced reception DCI mode as the first anchor DCI block;

A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block.

In combination with the first aspect, the first possible implementation manner of the first aspect, or the sixth possible implementation manner, in the seventh possible implementation manner, After the target time point enters the reduced DCI receiving mode, the method further includes:

If the scheduling information of the UE is monitored on the anchor DCI block in the second preset time period, the DCI full receiving mode is entered from a point in time when the scheduling information of the UE is monitored; In the DCI full receiving mode, the DCI block is continuously monitored;

Or, if the scheduling information of the UE is not monitored on the anchor DCI block in the second preset time period, the sleep state is entered.

In a second aspect, a method for monitoring downlink control information DCI is provided, including:

Receiving, by the base station, the last media access control MAC data packet in the current communication process sent by the terminal device UE;

Determining a target time point when the target acknowledgment ACK message is returned to the UE; wherein the target ACK message is an ACK message that the base station replies to the last MAC data packet;

Determining an anchor point DCI block according to the target time point; wherein the anchor point DCI block is a DCI block that can be used to carry scheduling information of the UE, and two adjacent anchor point DCI blocks are separated by one Or a plurality of DCI blocks, the start time of the anchor DCI block being the same as or after the target time point; the target time point being used to cause the UE to enter a reduced DCI reception mode, In the reduced DCI reception mode, the UE listens to the anchor DCI block.

With reference to the second aspect, in a first possible implementation, if the base station replies to the at least two ACK messages for the last MAC data packet, the target ACK message is in the at least two ACK messages. The last ACK message.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in the second possible implementation manner, the determining, according to the target time point, the anchor point DCI block includes:

Determining an anchor point DCI block in each anchor point DCI listening period according to a preset parameter; wherein the preset parameter includes at least one of the following information: identity of the UE The ID number, the anchor DCI listening period, and the DCI interval of the coverage level in which the UE is located.

With reference to the second possible implementation of the second aspect, in a third possible implementation, the anchor DCI listening period is: an integer multiple of a frame length of a super frame, or all coverage of the base station A common multiple of the level of DCI interval.

With reference to the second possible implementation manner or the third possible implementation manner of the second aspect, in a fourth possible implementation manner, the preset parameter includes an ID of the UE, an anchor DCI listening period, and a Determining a DCI interval of the coverage level of the UE; determining, according to the preset parameter, an anchor point DCI block in each anchor point DCI listening period from the target time point, including:

Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period;

Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block.

With reference to the second possible implementation manner of the second aspect, or the third possible implementation manner, in a fifth possible implementation manner, the preset parameter includes an anchor DCI listening period; the determining according to the preset parameter Each anchor point DCI block in the DCI listening period of the anchor point includes:

The DCI block at the end time of the first preset time period starting from the time point when the UE enters the reduced DCI reception mode as the first anchor DCI block;

A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block.

With reference to the second aspect, the first possible implementation manner of the second aspect, and the fifth possible implementation manner, in the sixth possible implementation manner, determining the anchor point according to the target time point After the DCI block, the method further includes:

If there is user data for the UE in the second preset time period, sending scheduling information of the UE on the anchor DCI block, so that the UE is listening from The time point of the scheduling information of the UE starts to enter a DCI full receiving mode, wherein in the DCI full receiving mode, the DCI block is continuously monitored;

Or, if there is no user data for the UE in the second preset time period, the scheduling information of the UE is not sent on the anchor DCI block, so that the UE is in the second preset time. The scheduling information of the UE is not monitored in the segment, and thus enters a sleep state.

In a third aspect, a terminal device UE is provided, including:

a sending unit, configured to send, to the base station, the last media access control MAC data packet in the current communication process;

a first determining unit, configured to determine a target time point when receiving a target positive acknowledgement ACK message sent by the base station; wherein the target ACK message is an ACK message that the base station replies to the last MAC data packet;

a switching unit, configured to enter a reduced DCI receiving mode according to the target time point; wherein, in the reduced DCI receiving mode, listening to an anchor DCI block; wherein the anchor DCI block is a base station according to the target time point The determined DCI block that can be used to carry the scheduling information of the UE is separated by one or more DCI blocks between two adjacent anchor DCI blocks.

With reference to the third aspect, in a first possible implementation, if the base station replies to the at least two ACK messages for the last MAC data packet, the target ACK message is in the at least two ACK messages. The last ACK message.

In conjunction with the first possible implementation of the third aspect, in a second possible implementation, the terminal device further includes:

a receiving unit, configured to receive a first ACK message that is sent back by the base station for the last MAC data packet, if the first ACK message is received correctly, in the subsequent process, the base station is no longer received for the last Another ACK message replied by a MAC packet; wherein the first ACK message is a non-last ACK message replied by the base station to the last MAC data packet;

The first determining unit is specifically configured to: determine, according to a time point when the first ACK message is received, a target time point when receiving the target ACK message replied by the base station.

With reference to the third aspect, the first possible implementation manner of the third aspect, or the second possible implementation manner, in a third possible implementation, the terminal device further includes:

a second determining unit, configured to determine, according to the preset parameter, an anchor point DCI block in each anchor point DCI listening period, where the preset parameter includes at least one of the following information: an identity identification number ID of the UE The anchor DCI listening period and the DCI interval of the coverage level of the UE.

With reference to the third possible implementation manner of the third aspect, in a fourth possible implementation manner, the anchor DCI listening period is: an integer multiple of a frame length of a super frame, or all coverage of the base station A common multiple of the level of DCI interval.

With reference to the third possible implementation manner of the third aspect, or the fourth possible implementation manner, in a fifth possible implementation manner, the preset parameters include an ID of the UE, an anchor DCI listening period, and a The DCI interval of the coverage level where the UE is located; the second determining unit is specifically configured to:

Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period;

Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block.

With reference to the third possible implementation manner of the third aspect, or the fourth possible implementation manner, in a sixth possible implementation manner, the preset parameter includes an anchor DCI listening period, and the second determining unit is specific. Used for:

The DCI block at the end time of the first preset time period from the time point of entering the reduced reception DCI mode as the first anchor DCI block;

A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block.

With reference to the third aspect, the first possible implementation manner of the third aspect, and the sixth possible implementation manner, in a seventh possible implementation manner,

The switching unit is further configured to: after receiving the reduced DCI receiving mode according to the target time point, if the scheduling information of the UE is monitored on the anchor DCI block in the second preset time period, the switching information is monitored. And entering a DCI full receiving mode at a time point of the scheduling information of the UE; wherein, in the DCI full receiving mode, continuously monitoring the DCI block;

Or the switching unit is further configured to: after entering the reduced DCI receiving mode according to the target time point, if the scheduling information of the UE is not monitored on the anchor DCI block in the second preset time period, Then enter the sleep state.

In a fourth aspect, a base station is provided, including:

a receiving unit, configured to receive a last media access control MAC data packet in the current communication process sent by the terminal device UE;

a first determining unit, configured to determine a target time point when the target positive acknowledgement ACK message is returned to the UE, where the target ACK message is an ACK message that the base station replies to the last MAC data packet;

a second determining unit, configured to determine an anchor point DCI block according to the target time point; wherein the anchor point DCI block is a DCI block that can be used to carry scheduling information of the UE, and two adjacent anchors Point DCI blocks are separated by one or more DCI blocks, the start time of the anchor DCI block is the same as or after the target time point; the target time point is used to make the UE Entering a reduced DCI reception mode, in which the UE listens to the anchor DCI block.

With reference to the fourth aspect, in a first possible implementation, if the base station replies to the at least two ACK messages for the last MAC data packet, the target ACK message is in the at least two ACK messages. The last ACK message.

With reference to the fourth aspect or the first possible implementation manner of the fourth aspect, in a second possible implementation manner, the second determining unit is specifically configured to:

Determining an anchor point DCI block in each anchor point DCI listening period according to a preset parameter; wherein the preset parameter includes at least one of the following information: an identity identification number ID of the UE, an anchor point DCI listening period, The DCI interval of the coverage level in which the UE is located.

With reference to the second possible implementation manner of the fourth aspect, in a third possible implementation, the anchor DCI listening period is: an integer multiple of a frame length of a super frame, or all coverage of the base station A common multiple of the level of DCI interval.

With reference to the second possible implementation manner or the third possible implementation manner of the fourth aspect, in a fourth possible implementation manner, the preset parameter includes an ID of the UE, an anchor DCI listening period, and a The DCI interval of the coverage level where the UE is located; the second determining unit is specifically configured to:

Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period;

Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block.

With reference to the second possible implementation manner or the third possible implementation manner of the fourth aspect, in a fifth possible implementation manner, the preset parameter includes an anchor DCI listening period, and the second determining unit is specific. Used for:

The DCI block at the end time of the first preset time period starting from the time point when the UE enters the reduced DCI reception mode as the first anchor DCI block;

A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block.

With reference to the fourth aspect, the first possible implementation manner of the fourth aspect, and the fifth possible implementation manner, in a sixth possible implementation manner, the base station further includes: a sending unit, configured to:

After the second determining unit determines the anchor point DCI block according to the target time point, if there is user data for the UE in the second preset time period, then in the And transmitting the scheduling information of the UE on the anchor DCI block, so that the UE enters a DCI full receiving mode from a time point of monitoring the scheduling information of the UE, where in the DCI full receiving mode, continuous monitoring DCI block;

Or, after the second determining unit determines the anchor point DCI block according to the target time point, if there is no user data for the UE in the second preset time period, the node is not sent on the anchor point DCI block. The scheduling information of the UE is used, so that the UE does not listen to the scheduling information of the UE in the second preset time period, thereby entering a sleep state.

A fifth aspect provides a terminal device UE, including: a transmitter and a processor;

The transmitter is configured to send, to the base station, the last media access control MAC data packet in the current communication process;

The processor is configured to perform the following actions:

Determining a target time point when receiving the target positive acknowledgement ACK message sent by the base station; wherein the target ACK message is an ACK message that the base station replies to the last MAC data packet;

Entering a reduced DCI receiving mode according to the target time point; wherein, in the reduced DCI receiving mode, listening to an anchor DCI block; wherein the anchor DCI block is determined by the base station according to the target time point A DCI block carrying scheduling information of the UE, where two adjacent anchor point DCI blocks are separated by one or more DCI blocks.

With reference to the fifth aspect, in a first possible implementation, if the base station replies to the at least two ACK messages for the last MAC data packet, the target ACK message is in the at least two ACK messages. The last ACK message.

With reference to the first possible implementation of the fifth aspect, in a second possible implementation, the terminal device further includes:

a receiver, configured to receive a first ACK message that is sent back by the base station for the last MAC data packet, if the first ACK message is received correctly, then During the continuation process, the other ACK message that the base station replies to the last MAC data packet is no longer received; wherein the first ACK message is a non-last ACK that the base station replies to the last MAC data packet. Message

The processor is specifically configured to: determine, according to a time point when the first ACK message is received, a target time point when receiving the target ACK message replied by the base station.

With reference to the fifth aspect, the first possible implementation manner of the fifth aspect, or the second possible implementation manner, in a third possible implementation manner,

The processor is further configured to: determine, according to a preset parameter, an anchor point DCI block in each anchor point DCI listening period; where the preset parameter includes at least one of the following information: an identity identification number of the UE ID, anchor DCI listening period, DCI interval of the coverage level where the UE is located.

With reference to the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner, the anchor DCI listening period is: an integer multiple of a frame length of a super frame, or all coverage of the base station A common multiple of the level of DCI interval.

With reference to the third possible implementation manner of the fifth aspect, or the fourth possible implementation manner, in a fifth possible implementation manner, the preset parameters include an ID of the UE, an anchor DCI listening period, and a The DCI interval of the coverage level at which the UE is located; the processor is specifically configured to:

Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period;

Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block.

With reference to the third possible implementation manner of the fifth aspect, or the fourth possible implementation manner, in a sixth possible implementation manner, the preset parameter includes an anchor DCI listening period; :

The DCI block at the end time of the first preset time period from the time point of entering the reduced reception DCI mode as the first anchor DCI block;

A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block.

With reference to the fifth aspect, the first possible implementation manner of the fifth aspect, and the sixth possible implementation manner, in a seventh possible implementation manner,

The processor is further configured to: after receiving the reduced DCI receiving mode according to the target time point, if the scheduling information of the UE is monitored on the anchor DCI block in the second preset time period, the slave monitors And entering a DCI full receiving mode at a time point of the scheduling information of the UE; wherein, in the DCI full receiving mode, continuously monitoring the DCI block;

Or the processor is further configured to: after entering the reduced DCI receiving mode according to the target time point, if the scheduling information of the UE is not monitored on the anchor DCI block in the second preset time period, Then enter the sleep state.

In a sixth aspect, a base station is provided, including:

a receiver, configured to receive a last media access control MAC data packet in the current communication process sent by the terminal device UE;

A processor that performs the following actions:

Determining a target time point when the target acknowledgment ACK message is returned to the UE; wherein the target ACK message is an ACK message that the base station replies to the last MAC data packet;

Determining an anchor point DCI block according to the target time point; wherein the anchor point DCI block is a DCI block that can be used to carry scheduling information of the UE, and two adjacent anchor point DCI blocks are separated by one Or a plurality of DCI blocks, the start time of the anchor DCI block being the same as or after the target time point; the target time point being used to cause the UE to enter a reduced DCI reception mode, In the reduced DCI reception mode, the UE listens to the anchor DCI block.

With reference to the sixth aspect, in a first possible implementation, if the base station replies to the at least two ACK messages for the last MAC data packet, the target The ACK message is the last ACK message of the at least two ACK messages.

With reference to the sixth aspect, or the first possible implementation manner of the sixth aspect, in a second possible implementation manner, the processor is specifically configured to:

Determining an anchor point DCI block in each anchor point DCI listening period according to a preset parameter; wherein the preset parameter includes at least one of the following information: an identity identification number ID of the UE, an anchor point DCI listening period, The DCI interval of the coverage level in which the UE is located.

With reference to the second possible implementation manner of the sixth aspect, in a third possible implementation manner, the anchor DCI listening period is: an integer multiple of a frame length of a super frame, or all coverage of the base station A common multiple of the level of DCI interval.

With reference to the second possible implementation manner or the third possible implementation manner of the sixth aspect, in a fourth possible implementation manner, the preset parameter includes an ID of the UE, an anchor DCI listening period, and a The DCI interval of the coverage level at which the UE is located; the processor is specifically configured to:

Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period;

Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block.

With reference to the second possible implementation manner or the third possible implementation manner of the sixth aspect, in a fifth possible implementation manner, the preset parameter includes an anchor DCI listening period; :

The DCI block at the end time of the first preset time period starting from the time point when the UE enters the reduced DCI reception mode as the first anchor DCI block;

A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block.

With reference to the sixth aspect, the first possible implementation manner of the sixth aspect, and the fifth possible implementation manner, in the sixth possible implementation manner, the base station further includes Transmitter for:

After the processor determines the anchor point DCI block according to the target time point, if there is user data for the UE in the second preset time period, sending the UE on the anchor point DCI block Scheduling information, so that the UE enters a DCI full reception mode from a point of time when the scheduling information of the UE is monitored, wherein, in the DCI full reception mode, the DCI block is continuously monitored;

Or after the determining, by the processor, the anchor point DCI block according to the target time point, if there is no user data for the UE in the second preset time period, the UE is not sent on the anchor point DCI block. The scheduling information is such that the UE does not listen to the scheduling information of the UE within the second preset time period, thereby entering a sleep state.

The seventh aspect provides a system for monitoring downlink control information (DCI), including a terminal device and a base station, where the terminal device is any one of the terminal devices provided in the foregoing third or fifth aspect, and the base station is the foregoing fourth aspect. Or any of the base stations provided in the fifth aspect.

In the above technical solution, the UE enters the RDR mode according to the target time point by transmitting the last MAC data packet in the current communication process to the base station and determining the target time point when receiving the target ACK message replied by the base station. Alternatively, the base station determines the target time point when the target ACK message is returned to the UE by receiving the last MAC data packet in the current communication process sent by the UE, thereby determining the anchor point DCI block according to the target time point; target time The point is used to put the UE into the RDR mode. Wherein, in the RDR mode, the UE listens to the anchor DCI block, and the adjacent two anchor DCI blocks are separated by one or more DCI blocks. That is, the UE listens to the DCI block in the RDR mode under the trigger of the end time of the current communication process, or the base station enables the UE to listen to the DCI block in the RDR mode under the trigger of the end time of the current communication process. In this way, the technical solution can save power consumption compared to the prior art in which the UE needs to always listen to the DCI block before releasing the air interface connection.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any inventive labor.

1 is a schematic flowchart of a method for monitoring DCI according to Embodiment 1 of the present invention;

2 is a schematic flowchart of another method for monitoring DCI according to Embodiment 1 of the present invention;

FIG. 3 is a schematic diagram of a process for a UE to switch from a connected state to an idle state according to Embodiment 1 of the present invention.

4 is a schematic flowchart of a method for monitoring DCI according to Embodiment 2 of the present invention;

FIG. 5 is a schematic flowchart of a method for monitoring DCI according to Embodiment 3 of the present invention;

FIG. 6 is a schematic structural diagram of a terminal device according to Embodiment 4 of the present invention;

FIG. 7 is a schematic structural diagram of another terminal device according to Embodiment 4 of the present invention;

FIG. 8 is a schematic structural diagram of a terminal device according to Embodiment 5 of the present invention;

FIG. 9 is a schematic structural diagram of another terminal device according to Embodiment 5 of the present invention;

FIG. 10 is a schematic structural diagram of a base station according to Embodiment 6 of the present invention; FIG.

FIG. 11 is a schematic structural diagram of another base station according to Embodiment 6 of the present invention;

FIG. 12 is a schematic structural diagram of a base station according to Embodiment 7 of the present invention;

FIG. 13 is a schematic structural diagram of another base station according to Embodiment 7 of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. Based on an embodiment of the present invention, this All other embodiments obtained by a person of ordinary skill in the art without creative efforts are within the scope of the invention.

First, some of the terms in this article are explained to facilitate understanding by those skilled in the art:

1) DCI interval: It can also be called DCI period. The length of one DCI interval is 2 ⁿ times the frame length of one radio frame. Where n is a non-negative integer. The frame length of a wireless frame is typically 80 ms.

The length of the DCI interval is configurable. For cells that support coverage enhancement, the lengths of DCI intervals of different coverage levels are different. The base station may transmit the DCI interval of different coverage levels to the UE in the broadcast message; the UE determines which coverage level DCI block needs to be received according to information such as the downlink received signal quality of the location where the UE is located.

2) DCI block: refers to a time-frequency resource block used to carry scheduling information of the UE.

A DCI block is included in one DCI interval. The length of the DCI block in the DCI interval is configurable, and the length of the DCI block can usually be configured according to the number of users scheduled. The maximum length of one DCI block is the length of one DCI interval.

3), "and / or", is only an association relationship describing the associated object, indicating that there can be three kinds of relationships, for example, A and / or B, can mean: A exists separately, while A and B exist, exist alone B these three situations.

4) "Multiple" means two or more.

The technical solution provided by the embodiment of the present invention can provide the technical solution provided by f:

Embodiment 1

The method for monitoring DCI provided by the embodiment of the present invention is exemplified in the embodiment from the perspective of the terminal device.

1 is a schematic flowchart of a method for monitoring DCI according to an embodiment of the present disclosure. The method for monitoring DCI as shown in FIG. 1 includes the following steps S101-S103:

S101: The UE sends the last MAC (Media Access Control) data packet in the current communication process to the base station.

The UE may be any UE connected to the base station. A MAC packet is a packet that satisfies the MAC protocol and may also be referred to as a MAC layer packet.

For example, when the UE has an uplink data transmission requirement, the uplink data to be sent is encapsulated into one or more MAC data packets based on the MAC protocol, and sent to the base station. Specifically: the UE sends a MAC data packet to the base station each time. If the base station successfully receives a MAC data packet sent by the UE, the ACK (Acknowledgement) message for the MAC data packet is replied to the UE; when the UE receives the ACK message, the next MAC address is sent to the base station. Packet until the last MAC packet is sent.

In the embodiment of the present invention, the process of transmitting the first MAC data packet from the time of transmitting the first MAC data packet to receiving the ACK message replied by the base station for the last MAC data packet is called "one communication process". The triggering condition for the UE to have the uplink data transmission requirement is not limited in the embodiment of the present invention, and may be any trigger condition in the prior art, for example.

In addition, the UE generally monitors each DCI block in a communication process, that is, continuously monitors the DCI block; in this paper, the process of continuously monitoring the DCI block is referred to as an ADR (all DCI reception) mode.

For example, the UE may add an indication identifier to each MAC data packet in the current communication process, where the indication identifier is used to indicate whether the MAC data packet where the indication identifier is located is the last one of the communication processes. MAC packet. Alternatively, the UE may add an indication message only to the last MAC data packet in the current communication process to indicate that the data packet is the last MAC data packet in the current communication process. The indication indicator may be a display instruction of one bit, or may be a case where the content indication of the BSR (buffer status report) is 0 or other specific values.

S102: The UE determines a target time point when receiving a target ACK message replied by the base station, where the target ACK message is that the base station is for the last one An ACK message replied by the MAC packet.

The “target ACK message” may be any ACK message that the base station has received for the last MAC data packet received by the UE, or may be any one that has not been received by the UE for the last MAC data packet. ACK message.

It should be noted that the base station determines the number of ACK messages replied to one MAC data packet sent by the UE according to the communication quality of the UE. Wherein the number is an integer greater than or equal to 1. In general, the worse the communication quality of the UE, the larger the number.

In addition, it should be noted that, since the base station agrees with the UE before the current communication process, the number of ACK messages replied to a MAC data packet sent by the UE may be agreed by the protocol, or It is configured based on system message or dedicated signaling; therefore, even if the UE has not received the target ACK message, it can still determine the target time point when receiving the target ACK message according to the amount and the like. Of course, in a specific implementation, the UE may also determine a target time point according to any one of the prior art.

S103: The UE enters an RDR (reduced DCI reception) according to the target time point; wherein, in the RDR mode, an anchor DCI block (anchor DCI) is monitored; wherein the anchor point DCI block For a DCI block that is determined by the base station according to the target time point and can be used to carry scheduling information of the UE, two adjacent anchor point DCI blocks are separated by one or more DCI blocks.

For example, the UE starts to enter the RDR mode when the third preset time period starts from the target time point; wherein the third preset time period may be 0 or greater than 0. In a specific implementation, the third preset time period may be configured to exist or may not be configured; if yes, the value of the third preset time may be configured by using a broadcast message or dedicated signaling. The specific value of the third preset time period is not limited in the embodiment of the present invention. Within the third preset time period, the UE is still in ADR mode. It should be noted that, in order to distinguish from other preset time periods in this document, the “third preset time period” is used herein.

Wherein, in the RDR mode, the UE divides the DCI block into an anchor point DCI block and a non-anchor point DCI block. The anchor DCI block is a DCI block that can be used by the base station to determine the scheduling information of the UE according to the target time point. The specific implementation manner of the base station determining the anchor DCI block can be referred to below. The scheduling information of the UE cannot be carried on the non-anchor DCI block. The non-anchor DCI block can be used to carry scheduling information of other UEs.

It should be noted that the anchor DCI block can carry the scheduling information of the UE, but not every anchor DCI block carries the scheduling information of the UE, and the UE cannot know in advance which anchor DCI block is carried. There is scheduling information for the UE, so in the RDR mode, the UE needs to listen to each anchor DCI block. In addition, the UE does not need to listen to non-anchor DCI blocks.

It should be noted that when the UE monitors the scheduling information of the UE in the anchor DCI block, it is considered that it listens to the scheduling information of the UE, and receives or transmits the user data of the UE according to the scheduling information. The “user data” herein may be uplink user data or downlink user data. That is, the UE can be considered to have monitored user data.

Any two adjacent anchor point DCI blocks are separated by one or more DCI blocks; the number of DCI blocks separated by any adjacent two anchor point DCI blocks and any other adjacent two anchor point DCI blocks The number of spaced DCI blocks may be the same or different. Preferably, any two adjacent anchor DCI blocks are separated by the same number of DCI blocks; thus the concept of "anchor DCI listening period" is introduced. Specifically, there are at least two DCI blocks in an anchor DCI listening period, specifically an anchor DCI block and at least one non-anchor DCI block; the anchor DCI blocks in the DCI listening period of each anchor point have the same position. For example, the second DCI block in each anchor DCI listening period is an anchor DCI block. That is to say, the interval between two adjacent anchor points DCI is the anchor DCI listening period.

Optionally, the anchor DCI listening period may be: an integer multiple of a frame length of a superframe, or a common multiple of a DCI interval of all coverage levels of the base station. Among them, the frame length of one superframe is 64*80ms. Preferably, the anchor DCI listening period is: a frame length of one superframe, Or, the least common multiple of the DCI interval of all coverage levels of the base station.

In the specific implementation, the number of DCI blocks may be used to represent the anchor DCI listening period; of course, the anchor DCI listening period may also be directly represented by a time period of units of ms (milliseconds) or s (seconds).

It should be noted that, generally, the anchor DCI listening period is determined by the base station. Further, the base station carries the anchor DCI listening period in the system message and broadcasts to notify all the UEs in the cell where the UE is located. In addition, if different UEs have different requirements for the anchor DCI listening period, the base station may also use dedicated signaling to notify the specific UE of the anchor DCI listening period of the specific UE. Optionally, if the UE obtains the anchor DCI information from the broadcast message, and receives the anchor DCI period sent by the dedicated signaling, the UE preferentially uses the anchor DCI listening period carried in the dedicated signaling.

In a specific implementation, the UE does not need to obtain an anchor DCI listening period from the broadcast message sent by the base station in each communication process. The UE may obtain an anchor DCI listening period from the broadcast message and store it locally; in the subsequent communication process, if the system message does not change, the UE may directly obtain the anchor DCI listening period from the local.

This embodiment may be described as: the UE enters the ADR mode at the beginning of a communication process; and enters the RDR mode upon triggering of the end time of the communication process.

It should be noted that the UE is in the connected state in both the ADR mode and the RDR mode, and the base station reserves the context information for the UE.

The method for monitoring DCI provided by the embodiment, the UE sends the last MAC data packet in the current communication process to the base station, and determines a target time point when receiving the target ACK message replied by the base station, where the target ACK message is for the base station. The last MAC packet replies with an ACK message; thereby entering the RDR mode according to the target time point. In the RDR mode, the UE listens to the anchor DCI block, wherein the adjacent two anchor DCI blocks are separated by one or more DCI block. That is, the UE listens to the DCI block in the RDR mode under the trigger of the end time of the current communication process, so that the technical solution can be monitored by the UE in the prior art before the air interface connection is released. Save power.

Optionally, if the base station replies to the at least two ACK messages for the last MAC data packet, the target ACK message is the last ACK message of the at least two ACK messages.

In an optional manner, in an embodiment provided by the embodiment of the present invention, after S101, the method further includes: receiving a first ACK message that the base station replies to the last MAC data packet, if If the first ACK message is received correctly, then in the subsequent process, the other ACK message that the base station replies to the last MAC data packet is no longer received; wherein the first ACK message is that the base station is for the last A non-last ACK message replied by a MAC packet. If the reception of the first ACK message fails, the UE continues to receive subsequent ACK messages until the ACK message is correctly received.

For example, the base station continuously sends two ACK messages to the UE for the last one of the MAC data packets, and the UE may not receive the second ACK message after receiving the first ACK message correctly, but the UE still calculates the ACK message. The reception time point of the second ACK message is taken as the target time point.

It should be noted that the technical solution provided by this embodiment can reduce the power consumption of the UE, compared to the technical solution that the UE receives all the ACK messages that the base station replies to the last one of the MAC data packets. In addition, in a specific implementation, after receiving an ACK message sent by the base station for any MAC data packet, if the ACK message is received correctly, the UE may not receive the replies to the MAC data packet in the subsequent process. Other ACK messages.

In this embodiment, S102 may include: determining a target time point when receiving the target ACK message replied by the base station according to a time point when the first ACK message is received. For example, the UE may determine the target time point according to information such as the number of ACK messages replied by the base station for one MAC data packet sent by the UE.

Optionally, referring to FIG. 2, another method for monitoring DCI provided by this embodiment is provided. Schematic diagram of the process. The method for monitoring the DCI shown in FIG. 2 may further include the following steps S104-S106 after the foregoing S103.

S104: The UE determines whether the scheduling information of the UE is monitored on the anchor DCI block in the second preset time period, that is, whether there is user data of the user; wherein the second preset time period Refers to the time period in which the UE is in the RDR mode.

If yes, execute S105; if no, execute S106.

The “user data” may be uplink user data or downlink user data. The specific value of the “second preset time period” is not limited in the embodiment of the present invention.

S105: The UE starts to enter the ADR mode from a point in time when the scheduling information of the UE is monitored on the anchor DCI block; wherein, in the ADR mode, the DCI block is continuously monitored.

S106: The UE enters a sleep state, that is, a long sleep state of an idle state or a connected state.

The UE is in an idle state, which is equivalent to the UE disconnecting from the base station. That is, the base station releases the air interface resources of the UE. The long-sleep state of the UE in the connected state is equivalent to the base station releasing the air interface resource of the UE, but the base station still retains the context information of the UE, so that the UE can acquire the scheduling resource.

FIG. 3 is a schematic diagram of a process for a UE to switch from a connected state to an idle state according to an embodiment of the present invention. Each small square in Figure 3 represents a DCI block. The small square with shadow indicates the DCI block monitored by the UE, and specifically includes: each DCI block in the ADR mode and the anchor DCI block in the RDR mode; the blank small square indicates the non-anchor point in the RDR mode. DCI block.

The trigger condition for the UE to enter the ADR mode may refer to the prior art; the trigger condition for switching from the ADR mode to the RDR mode may be: the end time of the third preset time period after the target time point; and the triggering of the RDR mode to the idle state The condition may be that the UE does not listen to the scheduling information of the UE in the second preset time period after entering the RDR mode, that is, there is no user data of the user.

In the process of the UE shown in FIG. 3 from the connected state to the idle state, the UE is subjected to the RDR mode. Switch directly to the idle state. In a specific implementation, if the UE monitors the scheduling information of the UE in the second preset time period after entering the RDR mode, the RDR mode is switched to the ADR mode. Then, the steps in the first embodiment are performed. The UE may perform “switching from ADR mode to RDR mode and then switching from RDR mode to ADR mode” in the connected state until the UE is not monitored in the second preset time period after entering the RDR mode for a certain time. When scheduling information, switch to the idle state. The duration of any two RDR modes may be the same or different, and the duration of any two ADR modes may be the same or different.

It should be noted that the number of DCI blocks monitored by the UE in the ADR mode, the DCI blocks in the RDR mode, and the durations of the DDR blocks, and the duration of the RDR mode can be set according to actual needs. Only the process of one of the UEs from the connected state to the idle state is schematically illustrated.

Embodiment 2

This embodiment describes an example of the method for monitoring DCI provided by the embodiment of the present invention from the perspective of a base station. For an explanation of the related content in this embodiment, reference may be made to other embodiments herein.

4 is a schematic flowchart of a method for monitoring DCI according to an embodiment of the present disclosure. The method for monitoring DCI as shown in FIG. 4 includes the following steps S401-S403:

S401: The base station receives the last media access control MAC data packet in the current communication process sent by the terminal device UE.

In a specific implementation, after S401, the method may further include: the base station replies to the UE with a certain number of ACK messages for the last one of the MAC data packets; wherein the number is that the base station agrees with the UE before the current communication process A good integer greater than or equal to 1. The agreed mode may be configured by the protocol, or configured based on system messages or dedicated signaling.

S402: The base station determines a target time point when replying to the target positive acknowledgement ACK message to the UE, where the target ACK message is that the base station is for the last one One ACK message replied by the MAC packet.

Optionally, if the base station replies to the at least two ACK messages for the last MAC data packet, the target ACK message is the last ACK message of the at least two ACK messages.

It should be noted that the “target ACK message” in this embodiment is the same ACK message as the “target ACK message” in the first embodiment. In addition, in theory, the time between the "target time point" in this embodiment and the "target time point in the first embodiment is the transmission time of the target ACK message. For the sake of simplicity of description, the transmission is not considered in this document. Time, that is, the "target time point" in the first embodiment is considered to be the same time point as the "target time point" in the second embodiment.

S403: The base station determines, according to the target time point, an anchor point DCI block, where the anchor point DCI block is a DCI block that can be used to carry scheduling information of the UE, and two adjacent anchor points DCI One or more DCI blocks are separated from each other, the start time of the anchor DCI block is the same as or after the target time point; the target time point is used to reduce the UE entry The DCI receiving mode, in which the UE listens to the anchor DCI block.

For example, the anchor DCI block can carry the scheduling information of the UE, but not every anchor DCI block carries the scheduling information of the UE. Specifically, if there is user data for the UE, the base station sends the scheduling information of the UE on the anchor DCI block; if there is no user data for the UE, the base station does not send the scheduling information of the UE on the anchor DCI block. . However, since the UE cannot know in advance which anchor DCI block carries the scheduling information of the UE, in the RDR mode, the UE needs to listen to each anchor DCI block. In addition, the UE does not need to listen to non-anchor DCI blocks.

It should be noted that, when the base station carries the scheduling information of the UE on an anchor DCI block, when the UE listens to the anchor DCI block, it is considered that it listens to the scheduling information of the UE, and receives the scheduling information according to the scheduling information. Or send the user data of the UE. That is, the UE can be considered to have monitored user data. Among them, the "user data" here can be Line user data can also be downlink user data.

For a specific implementation manner in which the base station determines the anchor point DCI block according to the target time point, reference may be made to the following description.

Optionally, after S403, the method may further include:

And if there is user data for the UE in the second preset time period, sending scheduling information of the UE on the anchor DCI block, so that the UE is listening to scheduling information of the UE. The time point begins to enter the DCI full reception mode, wherein in the DCI full reception mode, the DCI block is continuously monitored;

Or, if there is no user data for the UE in the second preset time period, the scheduling information of the UE is not sent on the anchor DCI block, so that the UE is in the second preset time. The scheduling information of the UE is not monitored in the segment, and thus enters a sleep state.

The second preset time period refers to a period of time in which the UE is in an RDR mode. The value of the second preset time period is not limited in the embodiment of the present invention.

The method for monitoring the DCI provided by the embodiment, the base station receives the last MAC data packet in the current communication process sent by the UE, and determines a target time point when the target ACK message is returned to the UE; where the target ACK message is for the base station An ACK message replied by the last MAC data packet; thereby determining an anchor point DCI block according to the target time point; the target time point is used to enable the UE to enter an RDR mode, and in the RDR mode, the UE monitors the anchor point DCI block, where the phase The two anchor DCI blocks of the neighbor are separated by one or more DCI blocks. That is to say, the base station enables the UE to listen to the DCI block in the RDR mode under the trigger of the end time of the communication process. In this way, the technical solution can save power consumption compared to the prior art in which the UE needs to always listen to the DCI block before releasing the air interface connection.

Embodiment 3

This embodiment describes an example of the method for monitoring DCI provided by the embodiment of the present invention from the perspective of the interaction between the UE and the base station. The explanation of related content in this embodiment can be referred to Other embodiments herein. In this embodiment, the description is made by taking the example that the number of ACK messages replied by the base station for one MAC data packet sent by the UE is 1.

FIG. 5 is a schematic flowchart diagram of a method for monitoring DCI according to an embodiment of the present disclosure. The method for monitoring DCI as shown in FIG. 5 includes the following steps S501-S508:

S501: The UE sends the last MAC data packet in the current communication process to the base station, where the UE is in the ADR mode during the current communication process.

S502: The base station replies to the UE with an ACK message for the last MAC data packet, and determines a time point when the “Respond” action is performed as the target time point.

S503: The UE determines a target time point of receiving the ACK message.

It should be noted that, in this paper, S502 is the same as the "target time point" in S503. It should be noted that, if the base station is configured with the third preset time period, the target time point is a time point obtained by the base station in returning the ACK to the UE in S502, and adding the third preset time point.

S504: The base station determines, according to the preset parameter, an anchor point DCI block in each anchor point DCI listening period, where the preset parameter includes at least one of the following information: an ID (IDentity, identity identification number), and an anchor point of the UE. The DCI listening period, the DCI interval of the coverage level of the UE; the starting time of the anchor DCI block is the same as the target time point or after the target time point.

The ID of the UE, that is, the UE_id, includes but is not limited to any one of the following information: C-RNTI (Cell Radio Network Temporary Identifier), TLLI (Temporary Logical Link Identifier) Identification), IMSI (International Mobile Subscriber Identification Number), and the like.

In a specific implementation, if the UE_id is long, the UE_id may be simplified by using a certain operation rule, and then the anchored DCI block is determined by using the simplified UE_id and the anchor DCI listening period. For example, the result calculated according to the formula UE_id mod K can be taken as the simplified UE_id; where K is a positive integer and mod represents a modulo operation. Of course, the UE_id can also be simplified by other formulas, and will not be enumerated here.

S505: If there is user data for the UE, the base station sends the scheduling information of the UE on the anchor DCI block; if there is no user data for the UE, the base station does not send the scheduling information of the UE on the anchor DCI block.

S506: The UE enters the RDR mode according to the target time point, and determines an anchor point DCI block in each anchor point DCI listening period according to the preset parameter. The preset parameter includes at least one of the following information: UE_id, anchor point DCI The listening period and the DCI interval of the coverage level of the UE.

It should be noted that the specific implementation manner of determining the anchor point DCI block in S505 and S506 is the same, and therefore the determined anchor point DCI block is also the same. The specific implementation manner can be referred to below.

S507: The UE listens to the anchor DCI block in each anchor DCI listening period.

The following describes several specific implementations of "determining the anchor point DCI block in each anchor point DCI listening period from the target time point according to the preset parameters". It should be noted that the execution entity of the specific implementation manner described below may be a base station or a UE. specific:

Manner 1: The preset parameters include the ID of the UE, the DCI listening period of the anchor point, and the DCI interval of the coverage level of the UE; determining, within the DCI listening period of each anchor point from the target time point, according to the preset parameter. Anchor DCI block, including steps 1 and 2 below:

Step 1: Determine the number M of DCI blocks in the DCI listening period of each anchor point according to the DCI interval of the anchor DCI listening period and the coverage level of the UE;

Step 2: Perform modulo operation on the ID and M of the UE to obtain the location of the anchor DCI block in each anchor DCI listening period, thereby determining the anchor DCI block.

For example, using the formula: M=floor (the DCI interval of the coverage level at which the anchor DCI listening period div UE is located), where M represents a rounding operation, div represents a division operation, and uses the formula R=UE_id mod M Get each anchor DCI listener The position of the anchor DCI block in the period is R, so that the Rth DCI block in each anchor DCI listening period is used as the anchor DCI block.

For example, suppose the anchor DCI listening period is 64*80ms, and the UE's coverage level has a DCI interval of 2*80ms; then, M=floor{(64*80ms)div(2*80ms)}=32, indicating: There are 32 DCI blocks in each anchor DCI listening period. Further, assuming that R obtained according to the formula R=UE_id mod M is 2, then, it is explained that the second DCI block of each anchor DCI listening period is an anchor DCI block.

Manner 2: The preset parameter includes an anchor DCI listening period; determining, according to the preset parameter, an anchor DCI block in each anchor DCI listening period from the target time point, including the following steps 1) and 2):

Step 1): the DCI block at the end time of the first preset time period starting from the time point when the UE enters the DCI reception mode is reduced as the first anchor DCI block;

Step 2): A DCI block within each anchor DCI listening period and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block.

The value of the first preset time period is not limited in the embodiment of the present invention.

The "first anchor DCI block" may be a DCI block within any anchor DCI listening period. Preferably, the “first anchor DCI block” is the DCI block in the first anchor DCI listening period, that is, the first anchor DCI block in the RDR mode; in this case, the first preset time period may be 0, It can be a value greater than 0 and less than one anchor DCI listening period.

For example, the “first anchor DCI block” is the first anchor DCI block in the RDR mode, and the first anchor DCI block is labeled as R1, which can be obtained by the formula Ri=R1+the anchor DCI listening period*L. Each anchor point DCI block in each anchor DCI listening period; where L is an integer greater than or equal to 1. If R1 is the second DCI block in the first anchor DCI listening period, the second DCI block of each of the other anchor DCI listening periods is an anchor DCI block.

Embodiment 4

FIG. 6 is a schematic structural diagram of a terminal device UE according to an embodiment of the present invention. The figure is used to perform the method for monitoring downlink control information provided above. The terminal device 6 shown in FIG. 6 includes:

The sending unit 61 is configured to send, to the base station, the last media access control MAC data packet in the current communication process;

a first determining unit 62, configured to determine a target time point when receiving a target positive acknowledgement ACK message sent by the base station, where the target ACK message is an ACK message sent by the base station for the last MAC data packet ;

The switching unit 63 is configured to enter a reduced DCI receiving mode according to the target time point; wherein, in the reduced DCI receiving mode, listening to an anchor DCI block; wherein the anchor DCI block is a base station according to the target time A DCI block that can be used to carry scheduling information of the UE, and two adjacent DCI blocks of the anchor point are separated by one or more DCI blocks.

Optionally, if the base station replies to the at least two ACK messages for the last MAC data packet, the target ACK message is the last ACK message of the at least two ACK messages.

Optionally, as shown in FIG. 7, the terminal device 6 further includes:

The receiving unit 64 is configured to receive a first ACK message that is sent back by the base station for the last one of the MAC data packets, and if the first ACK message is received correctly, in the subsequent process, the base station is no longer received. The other ACK message replied by the last MAC packet; wherein the first ACK message is a non-last ACK message that the base station replies to the last MAC data packet;

The first determining unit 62 is specifically configured to: determine, according to a time point when the first ACK message is received, a target time point when receiving the target ACK message replied by the base station.

Optionally, as shown in FIG. 7, the terminal device 6 further includes:

The second determining unit 65 is configured to determine, according to the preset parameter, an anchor point DCI block in each anchor point DCI listening period, where the preset parameter includes at least one of the following information The identifier ID of the UE, the DCI listening period of the anchor point, and the DCI interval of the coverage level of the UE.

Optionally, the anchor DCI listening period is an integer multiple of a frame length of one superframe, or a common multiple of a DCI interval of all coverage levels of the base station.

Optionally, the preset parameter includes an ID of the UE, an anchor DCI listening period, and a DCI interval of the coverage level of the UE. The second determining unit 65 is specifically configured to:

Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period;

Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block.

Optionally, the preset parameter includes an anchor DCI listening period; the second determining unit 65 is specifically configured to:

The DCI block at the end time of the first preset time period from the time point of entering the reduced reception DCI mode as the first anchor DCI block;

A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block.

Optionally, the switching unit 63 is further configured to: after entering the reduced DCI receiving mode according to the target time point, if the scheduling of the UE is monitored on the anchor DCI block in a second preset time period The information enters the DCI full reception mode from the time point when the scheduling information of the UE is monitored; wherein, in the DCI full reception mode, the DCI block is continuously monitored;

Or the switching unit 63 is further configured to: after entering the reduced DCI receiving mode according to the target time point, if the scheduling information of the UE is not monitored on the anchor DCI block in the second preset time period , then goes to sleep.

The UE provided in this embodiment sends the last MAC packet in the current communication process to the base station, and determines the target when receiving the target ACK message replied by the base station. a point, wherein the target ACK message is an ACK message that the base station replies to the last MAC data packet; thereby entering the RDR mode according to the target time point, in the RDR mode, the UE monitors the anchor DCI block, where the adjacent two The anchor DCI blocks are separated by one or more DCI blocks. That is to say, the UE listens to the DCI block in the RDR mode under the trigger of the end time of the current communication process, so that the technical solution can save the technical solution that the UE needs to always listen to the DCI block before releasing the air interface connection. power consumption.

Embodiment 5

FIG. 8 is a schematic structural diagram of a terminal device UE according to an embodiment of the present invention, for performing the foregoing method for monitoring downlink control information. The terminal device 8 shown in FIG. 8 includes: a memory 81, a transmitter 82, and a processor 83;

The transmitter 82 is configured to send, to the base station, the last media access control MAC data packet in the current communication process;

The memory 81 is configured to store a set of codes for controlling the processor 83 to perform the following actions:

Determining a target time point when receiving the target positive acknowledgement ACK message sent by the base station; wherein the target ACK message is an ACK message that the base station replies to the last MAC data packet;

Entering a reduced DCI receiving mode according to the target time point; wherein, in the reduced DCI receiving mode, listening to an anchor DCI block; wherein the anchor DCI block is determined by the base station according to the target time point A DCI block carrying scheduling information of the UE, where two adjacent anchor point DCI blocks are separated by one or more DCI blocks.

Optionally, if the base station replies to the at least two ACK messages for the last MAC data packet, the target ACK message is the last ACK message of the at least two ACK messages.

Optionally, as shown in FIG. 9, the terminal device 8 further includes:

a receiver 84, configured to receive, by the base station, the last MAC packet Responding to the first ACK message, if the first ACK message is received correctly, in the subsequent process, the other ACK message that the base station replies to the last MAC data packet is no longer received; wherein the first ACK The message is a non-last ACK message that the base station replies to the last MAC data packet;

The processor 83 is specifically configured to: determine, according to a time point when the first ACK message is received, a target time point when receiving the target ACK message replied by the base station.

Optionally, the processor 83 is further configured to: determine, according to preset parameters, an anchor point DCI block in each anchor point DCI listening period; where the preset parameter includes at least one of the following information: The identity identification number of the UE, the anchor DCI listening period, and the DCI interval of the coverage level of the UE.

Optionally, the anchor DCI listening period is an integer multiple of a frame length of one superframe, or a common multiple of a DCI interval of all coverage levels of the base station.

Optionally, the preset parameter includes an ID of the UE, an anchor DCI listening period, and a DCI interval of the coverage level of the UE. The processor 83 is specifically configured to:

Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period;

Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block.

Optionally, the preset parameter includes an anchor DCI listening period; the processor 83 is specifically configured to:

The DCI block at the end time of the first preset time period from the time point of entering the reduced reception DCI mode as the first anchor DCI block;

A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block.

Optionally, the processor 83 is further configured to: after entering the reduced DCI receiving mode according to the target time point, if the scheduling of the UE is monitored on the anchor DCI block in a second preset time period Information, when listening to the scheduling information of the UE The inter-point starts to enter the DCI full reception mode; wherein, in the DCI full reception mode, the DCI block is continuously monitored; or the processor 83 is further configured to: after entering the reduced DCI reception mode according to the target time point, If the scheduling information of the UE is not monitored on the anchor DCI block in the second preset time period, the sleep state is entered.

The UE provided by this embodiment sends the last MAC packet in the current communication process to the base station, and determines a target time point when receiving the target ACK message replied by the base station, where the target ACK message is the base station for the last MAC address. An ACK message replied by the data packet; thereby entering the RDR mode according to the target time point. In the RDR mode, the UE listens to the anchor DCI block, wherein the adjacent two anchor point DCI blocks are separated by one or more DCI blocks. That is to say, the UE listens to the DCI block in the RDR mode under the trigger of the end time of the current communication process, so that the technical solution can save the technical solution that the UE needs to always listen to the DCI block before releasing the air interface connection. power consumption.

Embodiment 6

FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention, for performing the method for monitoring downlink control information provided above. The base station 10 shown in FIG. 10 includes:

The receiving unit 10A is configured to receive a last media access control MAC data packet in the current communication process sent by the terminal device UE;

a first determining unit 10B, configured to determine a target time point when the target positive acknowledgement ACK message is returned to the UE, where the target ACK message is an ACK message that the base station replies to the last MAC data packet;

a second determining unit 10C, configured to determine an anchor point DCI block according to the target time point; wherein the anchor point DCI block is a DCI block that can be used to carry scheduling information of the UE, two adjacent The anchor DCI blocks are separated by one or more DCI blocks, the start time of the anchor DCI block being the same as or after the target time point; the target time point is used to make the UE enters the reduced DCI receiving mode, In the reduced DCI reception mode, the UE listens to the anchor DCI block.

Optionally, if the base station replies to the at least two ACK messages for the last MAC data packet, the target ACK message is the last ACK message of the at least two ACK messages.

Optionally, the second determining unit 10C is specifically configured to:

Determining an anchor point DCI block in each anchor point DCI listening period according to a preset parameter; wherein the preset parameter includes at least one of the following information: an identity identification number ID of the UE, an anchor point DCI listening period, The DCI interval of the coverage level in which the UE is located.

Optionally, the anchor DCI listening period is an integer multiple of a frame length of one superframe, or a common multiple of a DCI interval of all coverage levels of the base station.

Optionally, the preset parameter includes an ID of the UE, an anchor point DCI listening period, and a DCI interval of the coverage level of the UE. The second determining unit 10C is specifically configured to:

Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period;

Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block.

Optionally, the preset parameter includes an anchor DCI listening period; and the second determining unit 10C is specifically configured to:

The DCI block at the end time of the first preset time period starting from the time point when the UE enters the reduced DCI reception mode as the first anchor DCI block;

A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block.

Optionally, as shown in FIG. 11, the base station 10 further includes a sending unit 10D, configured to:

After the second determining unit 10C determines the anchor point DCI block according to the target time point, if there is user data for the UE in the second preset time period, then in the And transmitting the scheduling information of the UE on the anchor DCI block, so that the UE enters a DCI full receiving mode from a time point of monitoring the scheduling information of the UE, where in the DCI full receiving mode, continuous monitoring DCI block;

Or the second determining unit 10C determines, after determining the anchor point DCI block according to the target time point, if there is no user data for the UE in the second preset time period, not sending on the anchor point DCI block. The scheduling information of the UE is such that the UE does not listen to the scheduling information of the UE in the second preset time period, thereby entering a sleep state.

The base station provided in this embodiment receives the last MAC data packet in the current communication process sent by the UE, and determines a target time point when the target ACK message is returned to the UE, where the target ACK message is the base station for the last one. An ACK message replied by the MAC data packet; thereby determining an anchor point DCI block according to the target time point; the target time point is used to enable the UE to enter the RDR mode, and in the RDR mode, the UE monitors the anchor point DCI block, where the adjacent two The anchor DCI blocks are separated by one or more DCI blocks. That is to say, the base station enables the UE to listen to the DCI block in the RDR mode under the trigger of the end time of the communication process. In this way, the technical solution can save power consumption compared to the prior art in which the UE needs to always listen to the DCI block before releasing the air interface connection.

Example 7

FIG. 12 is a schematic structural diagram of a base station according to an embodiment of the present invention, for performing the foregoing method for monitoring downlink control information. The base station 12 shown in FIG. 12 includes a memory 12A, a receiver 12B, and a processor 12C.

The receiver 12B is configured to receive the last media access control MAC data packet in the current communication process sent by the terminal device UE;

The memory 12A is for storing a set of codes for controlling the processor 12C for performing the following actions:

Determining a target time point when replying to the UE with a target positive acknowledgement ACK message; wherein the target ACK message is for the base station for the last one of the MAC packets An ACK message replied to;

Determining an anchor point DCI block according to the target time point; wherein the anchor point DCI block is a DCI block that can be used to carry scheduling information of the UE, and two adjacent anchor point DCI blocks are separated by one Or a plurality of DCI blocks, the start time of the anchor DCI block being the same as or after the target time point; the target time point being used to cause the UE to enter a reduced DCI reception mode, In the reduced DCI reception mode, the UE listens to the anchor DCI block.

Optionally, if the base station replies to the at least two ACK messages for the last MAC data packet, the target ACK message is the last ACK message of the at least two ACK messages.

Optionally, the processor 12C is specifically configured to:

Determining an anchor point DCI block in each anchor point DCI listening period according to a preset parameter; wherein the preset parameter includes at least one of the following information: an identity identification number ID of the UE, an anchor point DCI listening period, The DCI interval of the coverage level in which the UE is located.

Optionally, the anchor DCI listening period is an integer multiple of a frame length of one superframe, or a common multiple of a DCI interval of all coverage levels of the base station.

Optionally, the preset parameter includes an ID of the UE, an anchor DCI listening period, and a DCI interval of the coverage level of the UE. The processor 12C is specifically configured to:

Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period;

Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block.

Optionally, the preset parameter includes an anchor DCI listening period; the processor 12C is specifically configured to:

The DCI block at the end time of the first preset time period starting from the time point when the UE enters the reduced DCI reception mode as the first anchor DCI block;

And each of the anchor points in the DCI listening period and the first anchor point DCI block A DCI block that is an integer multiple of the anchor DCI listening period is used as an anchor DCI block.

Optionally, as shown in FIG. 13, the base station 12 further includes a transmitter 12D, configured to:

After the processor 12C determines the anchor point DCI block according to the target time point, if there is user data for the UE in the second preset time period, the UE is sent on the anchor point DCI block. Scheduling information, so that the UE enters a DCI full receiving mode from a point of time when the scheduling information of the UE is monitored, wherein, in the DCI full receiving mode, the DCI block is continuously monitored;

Or, after determining, by the processor 12C, the anchor point DCI block according to the target time point, if there is no user data for the UE in the second preset time period, the method is not sent on the anchor point DCI block. Scheduling information of the UE, so that the UE does not listen to the scheduling information of the UE in the second preset time period, thereby entering a sleep state.

The base station provided in this embodiment receives the last MAC data packet in the current communication process sent by the UE, and determines a target time point when the target ACK message is returned to the UE, where the target ACK message is the base station for the last one. An ACK message replied by the MAC data packet; thereby determining an anchor point DCI block according to the target time point; the target time point is used to enable the UE to enter the RDR mode, and in the RDR mode, the UE monitors the anchor point DCI block, where the adjacent two The anchor DCI blocks are separated by one or more DCI blocks. That is to say, the base station enables the UE to listen to the DCI block in the RDR mode under the trigger of the end time of the communication process. In this way, the technical solution can save power consumption compared to the prior art in which the UE needs to always listen to the DCI block before releasing the air interface connection.

In addition, the embodiment of the present invention further provides a system for monitoring downlink control information (DCI), including: any one of the terminal devices provided in the fourth embodiment and the fifth embodiment, and any one of the base stations provided in the foregoing sixth and seventh embodiments.

It should be noted that the description of the related content in the foregoing embodiments of the device and the system may refer to the foregoing method embodiments, and details are not described herein again.

It will be apparent to those skilled in the art that for the convenience and brevity of the description, the specific operation of the system, apparatus and unit described above can be referred to the aforementioned method. Corresponding processes in the embodiments are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The software functional units described above are stored in a storage medium and include instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform portions of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a ROM (Read-Only Memory), a RAM (Random Access Memory), a disk or an optical disk, and the like, which can store program codes. .

Finally, it should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not limited thereto; although the present invention has been described in detail with reference to the foregoing embodiments, It should be understood by those skilled in the art that the technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced; and the modifications or replacements do not deviate from the essence of the corresponding technical solutions. The spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (46)

A method for monitoring downlink control information DCI, comprising: The terminal device UE sends the last media access control MAC data packet in the current communication process to the base station; Determining a target time point when receiving the target positive acknowledgement ACK message sent by the base station; wherein the target ACK message is an ACK message that the base station replies to the last MAC data packet; Entering a reduced DCI receiving mode according to the target time point; wherein, in the reduced DCI receiving mode, listening to an anchor DCI block; wherein the anchor DCI block is determined by the base station according to the target time point A DCI block carrying scheduling information of the UE, where two adjacent anchor point DCI blocks are separated by one or more DCI blocks. The method according to claim 1, wherein if the base station replies to at least two ACK messages for the last MAC data packet, the target ACK message is the last one of the at least two ACK messages. ACK message. The method according to claim 2, wherein after the transmitting the last MAC data packet in the current communication process to the base station, the method further includes: Receiving, by the base station, the first ACK message replied to the last MAC data packet, if the first ACK message is received correctly, in the subsequent process, the base station is no longer received to reply to the last MAC data packet. The other ACK message; wherein the first ACK message is a non-last ACK message that the base station replies to the last MAC data packet; The determining a target time point when receiving the target ACK message replied by the base station includes: Determining a target time point when receiving the target ACK message replied by the base station according to a time point when the first ACK message is received. The method according to any one of claims 1 to 3, wherein the entering the reduced DCI receiving mode according to the target time point comprises: Determining an anchor point DCI block in each anchor point DCI listening period according to a preset parameter; wherein the preset parameter includes at least one of the following information: an identity identification number ID of the UE, an anchor point DCI listening period, The DCI interval of the coverage level in which the UE is located. The method according to claim 4, wherein the anchor DCI listening period is an integer multiple of a frame length of a superframe, or a common multiple of a DCI interval of all coverage levels of the base station. The method according to claim 4 or 5, wherein the preset parameters include an ID of the UE, an anchor DCI listening period, and a DCI interval of an coverage level of the UE; Determine the anchor DCI block within each anchor DCI listening period, including: Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period; Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block. The method according to claim 4 or 5, wherein the preset parameter comprises an anchor DCI listening period; the determining, according to a preset parameter, an anchor point DCI block in each anchor DCI listening period, include: The DCI block at the end time of the first preset time period from the time point of entering the reduced reception DCI mode as the first anchor DCI block; A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block. The method according to any one of claims 1 to 7, wherein after the entering the reduced DCI receiving mode according to the target time point, the method further comprises: If the scheduling information of the UE is monitored on the anchor DCI block in the second preset time period, the DCI full receiving mode is entered from a point in time when the scheduling information of the UE is monitored; In the DCI full receiving mode, the DCI block is continuously monitored; Or if the anchor point DCI block is not monitored in the second preset time period The scheduling information of the UE enters a sleep state. A method for monitoring downlink control information DCI, comprising: Receiving, by the base station, the last media access control MAC data packet in the current communication process sent by the terminal device UE; Determining a target time point when the target acknowledgment ACK message is returned to the UE; wherein the target ACK message is an ACK message that the base station replies to the last MAC data packet; Determining an anchor point DCI block according to the target time point; wherein the anchor point DCI block is a DCI block that can be used to carry scheduling information of the UE, and two adjacent anchor point DCI blocks are separated by one Or a plurality of DCI blocks, the start time of the anchor DCI block being the same as or after the target time point; the target time point being used to cause the UE to enter a reduced DCI reception mode, In the reduced DCI reception mode, the UE listens to the anchor DCI block. The method according to claim 9, wherein if the base station replies to at least two ACK messages for the last MAC data packet, the target ACK message is the last one of the at least two ACK messages. ACK message. The method according to claim 9 or 10, wherein the determining the anchor point DCI block according to the target time point comprises: Determining an anchor point DCI block in each anchor point DCI listening period according to a preset parameter; wherein the preset parameter includes at least one of the following information: an identity identification number ID of the UE, an anchor point DCI listening period, The DCI interval of the coverage level in which the UE is located. The method according to claim 11, wherein the anchor DCI listening period is an integer multiple of a frame length of a superframe, or a common multiple of a DCI interval of all coverage levels of the base station. The method according to claim 11 or 12, wherein the preset parameter comprises an ID of the UE, an anchor DCI listening period, and a DCI interval of an coverage level of the UE; Determining each of the target time points The anchor DCI block in the anchor DCI listening period includes: Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period; Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block. The method according to claim 11 or 12, wherein the preset parameter comprises an anchor DCI listening period; the determining, according to a preset parameter, an anchor point DCI block in each anchor point DCI listening period, include: The DCI block at the end time of the first preset time period starting from the time point when the UE enters the reduced DCI reception mode as the first anchor DCI block; A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block. The method according to any one of claims 9 to 14, wherein after the determining the anchor point DCI block according to the target time point, the method further comprises: And if there is user data for the UE in the second preset time period, sending scheduling information of the UE on the anchor DCI block, so that the UE is listening to scheduling information of the UE. The time point begins to enter the DCI full reception mode, wherein in the DCI full reception mode, the DCI block is continuously monitored; Or, if there is no user data for the UE in the second preset time period, the scheduling information of the UE is not sent on the anchor DCI block, so that the UE is in the second preset time. The scheduling information of the UE is not monitored in the segment, and thus enters a sleep state. A terminal device UE, comprising: a sending unit, configured to send, to the base station, the last media access control MAC data packet in the current communication process; a first determining unit, configured to determine a target time point when receiving a target positive acknowledgement ACK message sent by the base station; where the target ACK message is for the base station An ACK message replied by the last MAC packet; a switching unit, configured to enter a reduced DCI receiving mode according to the target time point; wherein, in the reduced DCI receiving mode, listening to an anchor DCI block; wherein the anchor DCI block is a base station according to the target time point The determined DCI block that can be used to carry the scheduling information of the UE is separated by one or more DCI blocks between two adjacent anchor DCI blocks. The terminal device according to claim 16, wherein if the base station replies with at least two ACK messages for the last MAC data packet, the target ACK message is the last of the at least two ACK messages. An ACK message. The terminal device according to claim 17, wherein the terminal device further comprises: a receiving unit, configured to receive a first ACK message that is sent back by the base station for the last MAC data packet, if the first ACK message is received correctly, in the subsequent process, the base station is no longer received for the last Another ACK message replied by a MAC packet; wherein the first ACK message is a non-last ACK message replied by the base station to the last MAC data packet; The first determining unit is specifically configured to: determine, according to a time point when the first ACK message is received, a target time point when receiving the target ACK message replied by the base station. The terminal device according to any one of claims 16 to 18, wherein the terminal device further comprises: a second determining unit, configured to determine, according to the preset parameter, an anchor point DCI block in each anchor point DCI listening period, where the preset parameter includes at least one of the following information: an identity identification number ID of the UE The anchor DCI listening period and the DCI interval of the coverage level of the UE. The terminal device according to claim 19, wherein the anchor DCI listening period is an integer multiple of a frame length of one superframe, or a common multiple of a DCI interval of all coverage levels of the base station. The terminal device according to claim 19 or 20, wherein the preset parameter comprises an ID of the UE, an anchor DCI listening period, and a DCI interval of an coverage level of the UE; the second determining The unit is specifically used to: Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period; Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block. The terminal device according to claim 19 or 20, wherein the preset parameter comprises an anchor DCI listening period; the second determining unit is specifically configured to: The DCI block at the end time of the first preset time period from the time point of entering the reduced reception DCI mode as the first anchor DCI block; A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block. A terminal device according to any one of claims 16 to 22, characterized in that The switching unit is further configured to: after receiving the reduced DCI receiving mode according to the target time point, if the scheduling information of the UE is monitored on the anchor DCI block in the second preset time period, the switching information is monitored. And entering a DCI full receiving mode at a time point of the scheduling information of the UE; wherein, in the DCI full receiving mode, continuously monitoring the DCI block; Or the switching unit is further configured to: after entering the reduced DCI receiving mode according to the target time point, if the scheduling information of the UE is not monitored on the anchor DCI block in the second preset time period, Then enter the sleep state. A base station, comprising: a receiving unit, configured to receive a last media access control MAC data packet in the current communication process sent by the terminal device UE; a first determining unit, configured to determine a target time point when the target acknowledgment ACK message is returned to the UE, where the target ACK message is that the base station is for the most An ACK message replied by the latter MAC packet; a second determining unit, configured to determine an anchor point DCI block according to the target time point; wherein the anchor point DCI block is a DCI block that can be used to carry scheduling information of the UE, and two adjacent anchors Point DCI blocks are separated by one or more DCI blocks, the start time of the anchor DCI block is the same as or after the target time point; the target time point is used to make the UE Entering a reduced DCI reception mode, in which the UE listens to the anchor DCI block. The base station according to claim 24, wherein if the base station replies at least two ACK messages for the last MAC data packet, the target ACK message is the last one of the at least two ACK messages ACK message. The base station according to claim 24 or 25, wherein the second determining unit is specifically configured to: Determining an anchor point DCI block in each anchor point DCI listening period according to a preset parameter; wherein the preset parameter includes at least one of the following information: an identity identification number ID of the UE, an anchor point DCI listening period, The DCI interval of the coverage level in which the UE is located. The base station according to claim 26, wherein the anchor DCI listening period is an integer multiple of a frame length of one superframe, or a common multiple of a DCI interval of all coverage levels of the base station. The base station according to claim 26 or 27, wherein the preset parameter includes an ID of the UE, an anchor DCI listening period, and a DCI interval of an coverage level of the UE; the second determining unit Specifically used for: Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period; Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block. The base station according to claim 26 or 27, wherein the preset parameter comprises an anchor DCI listening period; the second determining unit is specifically configured to: The DCI block at the end time of the first preset time period starting from the time point when the UE enters the reduced DCI reception mode as the first anchor DCI block; A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block. The base station according to any one of claims 24 to 29, wherein the base station further comprises a sending unit, configured to: After the second determining unit determines the anchor point DCI block according to the target time point, if there is user data for the UE in the second preset time period, sending the Scheduling information of the UE, so that the UE enters a DCI full receiving mode from a point of time when the scheduling information of the UE is monitored, wherein, in the DCI full receiving mode, the DCI block is continuously monitored; Or, after the second determining unit determines the anchor point DCI block according to the target time point, if there is no user data for the UE in the second preset time period, the node is not sent on the anchor point DCI block. The scheduling information of the UE is used, so that the UE does not listen to the scheduling information of the UE in the second preset time period, thereby entering a sleep state. A terminal device UE, comprising: a transmitter and a processor; The transmitter is configured to send, to the base station, the last media access control MAC data packet in the current communication process; The processor is configured to perform the following actions: Determining a target time point when receiving the target positive acknowledgement ACK message sent by the base station; wherein the target ACK message is an ACK message that the base station replies to the last MAC data packet; Entering a reduced DCI receiving mode according to the target time point; wherein, in the reduced DCI receiving mode, listening to an anchor DCI block; wherein the anchor DCI block is determined by the base station according to the target time point A DCI block carrying scheduling information of the UE, where two adjacent anchor point DCI blocks are separated by one or more DCI blocks. The terminal device according to claim 31, wherein said base The station replies to at least two ACK messages for the last MAC data packet, and the target ACK message is the last ACK message of the at least two ACK messages. The terminal device according to claim 32, wherein the terminal device further comprises: a receiver, configured to receive a first ACK message that is sent back by the base station for the last MAC data packet, if the first ACK message is received correctly, in a subsequent process, the base station is no longer received for the last Another ACK message replied by a MAC packet; wherein the first ACK message is a non-last ACK message replied by the base station to the last MAC data packet; The processor is specifically configured to: determine, according to a time point when the first ACK message is received, a target time point when receiving the target ACK message replied by the base station. A terminal device according to any one of claims 31 to 33, characterized in that The processor is further configured to: determine, according to a preset parameter, an anchor point DCI block in each anchor point DCI listening period; where the preset parameter includes at least one of the following information: an identity identification number of the UE ID, anchor DCI listening period, DCI interval of the coverage level where the UE is located. The terminal device according to claim 34, wherein the anchor DCI listening period is an integer multiple of a frame length of one superframe, or a common multiple of a DCI interval of all coverage levels of the base station. The terminal device according to claim 34 or claim 35, wherein the preset parameter comprises an ID of the UE, an anchor point DCI listening period, and a DCI interval of an coverage level of the UE; the processor specific Used for: Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period; Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block. A terminal device according to claim 34 or 35, wherein said said The preset parameters include an anchor DCI listening period; the processor is specifically configured to: The DCI block at the end time of the first preset time period from the time point of entering the reduced reception DCI mode as the first anchor DCI block; A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block. A terminal device according to any one of claims 31 to 37, characterized in that The processor is further configured to: after receiving the reduced DCI receiving mode according to the target time point, if the scheduling information of the UE is monitored on the anchor DCI block in the second preset time period, the slave monitors And entering a DCI full receiving mode at a time point of the scheduling information of the UE; wherein, in the DCI full receiving mode, continuously monitoring the DCI block; Or the processor is further configured to: after entering the reduced DCI receiving mode according to the target time point, if the scheduling information of the UE is not monitored on the anchor DCI block in the second preset time period, Then enter the sleep state. A base station, comprising: a receiver, configured to receive a last media access control MAC data packet in the current communication process sent by the terminal device UE; A processor that performs the following actions: Determining a target time point when the target acknowledgment ACK message is returned to the UE; wherein the target ACK message is an ACK message that the base station replies to the last MAC data packet; Determining an anchor point DCI block according to the target time point; wherein the anchor point DCI block is a DCI block that can be used to carry scheduling information of the UE, and two adjacent anchor point DCI blocks are separated by one Or a plurality of DCI blocks, the start time of the anchor DCI block being the same as or after the target time point; the target time point being used to cause the UE to enter a reduced DCI reception mode, In the reduced DCI reception mode, the UE listens to the anchor DCI block. The base station according to claim 39, wherein if the base station replies at least two ACK messages for the last MAC data packet, the target ACK message is the last one of the at least two ACK messages ACK message. The base station according to claim 39 or 40, wherein the processor is specifically configured to: Determining an anchor point DCI block in each anchor point DCI listening period according to a preset parameter; wherein the preset parameter includes at least one of the following information: an identity identification number ID of the UE, an anchor point DCI listening period, The DCI interval of the coverage level in which the UE is located. The base station according to claim 41, wherein the anchor DCI listening period is an integer multiple of a frame length of one superframe, or a common multiple of a DCI interval of all coverage levels of the base station. The base station according to claim 41 or 42, wherein the preset parameters include an ID of the UE, an anchor point DCI listening period, and a DCI interval of the coverage level of the UE; to: Determining, according to the anchor DCI listening period and the DCI interval of the coverage level of the UE, the number M of DCI blocks in each anchor DCI listening period; Performing a modulo operation on the ID of the UE and the M to obtain a location of an anchor DCI block in each anchor DCI listening period, thereby determining an anchor DCI block. The base station according to claim 41 or 42, wherein the preset parameter comprises an anchor DCI listening period; the processor is specifically configured to: The DCI block at the end time of the first preset time period starting from the time point when the UE enters the reduced DCI reception mode as the first anchor DCI block; A DCI block within each of the anchor DCI listening periods and separated from the first anchor DCI block by an integer multiple of the anchor DCI listening period is used as an anchor DCI block. The base station according to any one of claims 39 to 44, wherein the base station further comprises a transmitter, configured to: After the processor determines the anchor point DCI block according to the target time point, if The user data for the UE is used in the second preset time period, and the scheduling information of the UE is sent on the anchor DCI block, so that the UE monitors the time information of the scheduling information of the UE. Starting to enter the DCI full receiving mode, wherein in the DCI full receiving mode, the DCI block is continuously monitored; Or after the determining, by the processor, the anchor point DCI block according to the target time point, if there is no user data for the UE in the second preset time period, the UE is not sent on the anchor point DCI block. The scheduling information is such that the UE does not listen to the scheduling information of the UE within the second preset time period, thereby entering a sleep state. A system for monitoring downlink control information DCI, characterized by the terminal device according to any one of claims 16-23, 31-38, and the base station according to any one of claims 24-30, 39-45 .

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