WO2023109487A1

WO2023109487A1 - Communication method and apparatus

Info

Publication number: WO2023109487A1
Application number: PCT/CN2022/134613
Authority: WO
Inventors: 罗青全; 张战战
Original assignee: 华为技术有限公司
Priority date: 2021-12-17
Filing date: 2022-11-28
Publication date: 2023-06-22
Also published as: CN116266782A

Abstract

The present application provides a communication method and apparatus. The method comprises: a terminal device receives first information from a network device, the first information instructing to monitor a first DCI format, and the first DCI format comprising a target information domain; the terminal device receives second information from the network device, the second information instructing to monitor a second DCI format, the second DCI format being a DCI format for removing the target information domain from the first DCI format, and the second information being carried in DCI or an MAC CE; and the terminal device monitors the second DCI format according to the second information. Therefore, when a UE parses the DCI in the second DCI format, the parsing time of the UE is correspondingly reduced, thereby saving the power consumption of the UE; and when the network device transmits the DCI in the second DCI format, resources required for transmitting the DCI can be reduced, thereby being capable of reducing the blocking probability of a PDCCH (or preventing the PDCCH from being blocked), and improving the utilization rate of the resources.

Description

Communication method and device

This application claims the priority of a Chinese patent application with application number 202111554496.3 and application title "Communication Method and Apparatus" filed with the China Patent Office on December 17, 2021, the entire contents of which are incorporated herein by reference.

technical field

The present application relates to the technical field of communication, and more specifically, to a communication method and device.

Background technique

Currently, some of the information sent by network devices, such as downlink control information (DCI), remains unchanged for a period of time, for example, at the granularity of milliseconds, seconds, or minutes. . Therefore, in the process of communication between the network device and the terminal device, if the network device sends this part of repeated information every time, it will cause unnecessary signaling and resource overhead, and it will also increase the analysis burden of the terminal device for the terminal device. .

Based on the above shortcomings, how to optimize the communication process between the network device and the terminal device is a problem to be solved.

Contents of the invention

The present application provides a communication method and device for optimizing a communication process between a network device and a terminal device.

In a first aspect, a communication method is provided, including:

The terminal device receives first information from the network device, and the first information indicates to monitor the first downlink control information DCI format, and the first DCI format includes a target information field; the terminal device receives second information from the network device, and the second information indicates to monitor the first downlink control information DCI format. Two DCI formats, the second DCI format is the DCI format in which the target information field is removed from the first DCI format, and the second information is carried in the DCI or the MAC CE; when the second information takes effect, the terminal device according to The second information is to monitor the second DCI format.

According to the solution of the present application, the terminal device can monitor the second DCI format according to the instruction of the network device, and the DCI size of the second DCI format is lower than that of the first DCI format. Therefore, for the terminal device, when the terminal device parses the DCI in the second DCI format, the parsing time of the terminal device will be correspondingly reduced, thereby saving the power consumption of the terminal device and optimizing the communication process between the terminal device and the network device .

In addition, carrying the second information in DCI or MAC CE, compared to carrying the second information in RRC signaling, on the one hand, the RRC signaling has a longer delay in taking effect, on the other hand, the overhead of RRC signaling is relatively large, and on the other hand, RRC signaling The signaling lasts for a long time after it takes effect, so the method of the present application can reduce the time delay, reduce the signaling overhead, and improve the flexibility of network equipment to configure terminal equipment and schedule resources.

With reference to the first aspect, in some implementation manners of the first aspect, the second information is carried in the DCI, and the second information takes effect after the terminal device sends feedback information for the second information.

In combination with the first aspect, in some implementations of the first aspect, the method further includes:

The terminal device starts the timer after the second information takes effect; after the timer expires, the second information becomes invalid, and the terminal device monitors the first DCI format and stops monitoring the second DCI format.

It should be understood that after the timer is started, the timer can be started all the time; or, after the timer is started, and the terminal receives the second information again, the timer can be restarted after the second information received again takes effect.

The terminal device receives the third information from the network device, the third information indicates to stop monitoring the second DCI format, and the third information is carried in DCI or MAC CE; the terminal device monitors the first DCI format according to the third information, and stops monitoring the second DCI format Format.

With reference to the first aspect, in some implementations of the first aspect, the first information indicates to monitor multiple DCI formats, and the multiple DCI formats include the first DCI format; the method further includes:

The terminal device determines the reduced DCI size of the first DCI format from multiple DCI formats according to the second information.

The terminal device receives fourth information from the network device, where the fourth information is used to indicate that at least one information field among all information fields included in the first DCI format is a target information field.

With reference to the first aspect, in some implementations of the first aspect, the content indicated by the target information field is configured by the network device through a radio resource control RRC message, or the content indicated by the target information field is included in the format received by the terminal device as A last DCI in a DCI format; the method also includes:

The terminal device determines the scheduling of the terminal device by the network device according to the monitored DCI in the second DCI format and the target information field.

When the second information takes effect, the terminal device also monitors the first DCI format.

According to the solution of this application, if the terminal still monitors the first DCI format when the second information is in effect, when the network device needs to send the first DCI format, the network device can directly send the DCI format of the first DCI format , there is no need to wait until the second information expires or the third information is sent before sending the first DCI format, which is conducive to flexible scheduling of network devices according to the wireless environment and service requirements.

In a second aspect, a communication method is provided, including:

The network device sends the first information to the terminal device, and the first information indicates to monitor the first downlink control information DCI format, and the first DCI format includes the target information field; the network device sends the second information to the terminal device, and the second information indicates to monitor the first downlink control information DCI format. Two DCI formats, the second DCI format is a DCI format in which the target information field is removed from the first DCI format, and the second information is carried in the DCI or the media access control control unit MAC CE.

According to the solution of the present application, the network device may instruct the terminal device to monitor the second DCI format. When the network device sends DCI in the second DCI format, the resources required to transmit DCI will be reduced, thereby reducing PDCCH blocking (or preventing PDCCH blocking), improving resource utilization efficiency, and optimizing the relationship between the terminal device and the network device. communication process between.

With reference to the second aspect, in some implementation manners of the second aspect, when the second information takes effect, the method further includes:

The network device sends the first DCI to the terminal device, and the DCI format of the first DCI is the second DCI format.

With reference to the second aspect, in some implementation manners of the second aspect, the way for the second information to take effect includes:

The second information is carried in the DCI, and the second information takes effect after receiving feedback information about the second information from the terminal device.

With reference to the second aspect, in some implementation manners of the second aspect, the method further includes:

The network device sends third information to the terminal device, the third information indicates to stop monitoring the second DCI format, and the third information is carried in DCI or MAC CE.

The network device sends fourth information to the terminal device, where the fourth information is used to indicate that at least one information field among all information fields included in the first DCI format is a target information field.

In a third aspect, a communication device is provided, including:

A transceiver unit, and a processing unit connected to the transceiver unit.

The transceiver unit is configured to receive the first information from the network device, the first information indicates to monitor the first downlink control information DCI format, and the first DCI format includes the target information field; the transceiver unit is also configured to receive the second information from the network device , the second information indicates to monitor the second DCI format, the second DCI format is the DCI format in which the target information domain is removed from the first DCI format, and the second information is carried in the DCI or the medium access control control unit MAC CE; the processing unit uses and monitoring the second DCI format according to the second information when the second information is effective.

With reference to the third aspect, in some implementation manners of the third aspect, the second information is carried in the DCI, and the second information takes effect after the transceiver unit sends feedback information for the second information.

In conjunction with the third aspect, in some implementations of the third aspect, the processing unit is further configured to start a timer from the second information becoming effective; after the timer expires, the second information becomes invalid, and the processing unit is further configured to Monitor the first DCI format, and stop monitoring the second DCI format.

In conjunction with the third aspect, in some implementations of the third aspect, the transceiver unit is further configured to receive third information from the network device, the third information indicates to stop monitoring the second DCI format, and the third information is carried in DCI or MAC CE Middle: the processing unit is further configured to monitor the first DCI format and stop monitoring the second DCI format according to the third information.

With reference to the third aspect, in some implementation manners of the third aspect, the first information indicates to monitor multiple DCI formats, and the multiple DCI formats include the first DCI format; the processing unit is further configured to, according to the second information, select from multiple DCI formats Determine the reduced DCI size of the first DCI format in the first DCI format.

With reference to the third aspect, in some implementations of the third aspect, the transceiver unit is further configured to receive fourth information from the network device, where the fourth information is used to indicate at least one information in all information fields included in the first DCI format Domain is the target information domain.

With reference to the third aspect, in some implementations of the third aspect, the content indicated by the target information field is configured by the network device through a radio resource control RRC message, or the content indicated by the target information field is included in the format received by the terminal device in the first The last piece of DCI in a DCI format; the processing unit is also configured to determine the scheduling of the terminal equipment by the network equipment according to the monitored DCI in the second DCI format and the target information field.

With reference to the third aspect, in some implementation manners of the third aspect, when the second information is valid, the processing unit is further configured to monitor the first DCI format.

In a fourth aspect, a communication device is provided, including:

A transceiver unit, and a processing unit connected to the transceiver unit.

The transceiver unit is configured to send the first information to the terminal device, the first information indicates to monitor the DCI format of the first downlink control information, and the first DCI format includes the target information field; the transceiver unit is also used to send the second information to the terminal device , the second information indicates to monitor the second DCI format, the second DCI format is a DCI format in which the target information field is removed from the first DCI format, and the second information is carried in the DCI or the medium access control control element MAC CE.

With reference to the fourth aspect, in some implementations of the fourth aspect, when the second information takes effect, the transceiver unit is further configured to send the first DCI to the terminal device, and the DCI format of the first DCI is the second DCI format .

With reference to the fourth aspect, in some implementation manners of the fourth aspect, the way for the second information to take effect includes:

In conjunction with the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to send third information to the terminal device, the third information indicates to stop monitoring the second DCI format, and the third information is carried in DCI or MAC CE middle.

With reference to the fourth aspect, in some implementations of the fourth aspect, the transceiver unit is further configured to send fourth information to the terminal device, where the fourth information is used to indicate at least one information in all information fields included in the first DCI format Domain is the target information domain.

In a fifth aspect, a communication device is provided, including a communication interface and a processor. When the communication device is running, the processor executes the computer program or instruction stored in the memory, so that the communication device executes the method in any possible implementation manner of the first aspect to the second aspect. The memory may be located in the processor, or implemented by a chip independent of the processor, which is not specifically limited in the present application.

In a sixth aspect, a computer-readable storage medium is provided, including a computer program. When the computer program runs on a computer, the computer executes the method in any possible implementation manner of the first aspect to the second aspect.

It should be understood that the computer may be the aforementioned terminal device or network device.

In a seventh aspect, a chip is provided, and a processing circuit is disposed on the chip, and the processing circuit is configured to execute the method in any possible implementation manner of the first aspect to the second aspect.

In an eighth aspect, a computer program product is provided, and the computer program product includes: a computer program (also referred to as code, or an instruction), when the computer program is executed, the computer executes any one of the first aspect to the second aspect. method in one possible implementation.

Description of drawings

Fig. 1 shows the system architecture applicable to the embodiment of the present application.

Fig. 2 is a schematic interaction diagram of an example of the method proposed in this application.

Fig. 3 is a schematic interaction diagram of an example of the method proposed in this application.

Fig. 4 shows a schematic block diagram of a communication device provided by this application.

Fig. 5 shows a schematic block diagram of a communication device provided in this application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various 3rd generation partnership project (the 3rd generation partnership project, 3GPP) communication systems, for example: long term evolution (long term evolution, LTE) system, for example, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), fifth generation (5th Generation, 5G) system, also known as new radio (new radio, NR) system, future sixth generation (6th Generation) , 6G) system, etc.

Fig. 1 shows a communication system to which this embodiment of the present application is applicable, and the communication system includes a terminal device and a network device. It should be understood that the present application does not limit the number of terminal devices and network devices included in the communication system.

The terminal equipment in the embodiment of the present application may refer to user equipment (user equipment, UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless Communication Device, User Agent, or User Device. The terminal device may also be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), a Functional handheld devices, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, terminal devices in 5G networks, terminal devices in future 6G networks or future evolution of public land mobile communication networks (public land mobile network (PLMN), etc., which are not limited in this embodiment of the present application.

The network device in the embodiment of the present application may be a device for communicating with a terminal device, and the network device may be an evolved base station (evolutional nodeB, eNB or eNodeB) in an LTE system, or a cloud wireless access The wireless controller in the network (cloud radio access network, CRAN) scenario, or the network device can be a relay station, an access point, a vehicle device, a wearable device, a network device in a 5G network, and a network device in a future 6G network or The embodiments of the present application do not limit the network devices and the like in the future evolved PLMN network.

In the actual business process, after observing data scheduling, it is found that for some business scenarios, some information fields (for example, more than 40% of the fields) in some information (such as DCI) sent by network devices will be in milliseconds, seconds level, or to minute-level time granularity remains unchanged. Therefore, in the process of communication between the network device and the terminal device, if the network device sends this part of the information field every time, unnecessary signaling and resource overhead will be caused.

In addition, for a reduced capability (reduced capability, RedCap) UE, the bandwidth supported by the RedCap UE is small, and the capability of the RedCap UE is limited. Therefore, RedCap UEs are more prone to channel congestion than NR normal (normal) UEs, such as physical downlink control channel (physical downlink control channel, PDCCH) congestion, and insufficient data resources. It should be understood that the method provided in this application is not only applicable to RedCap UE, but also applicable to NR normal UE.

Based on the above-mentioned problems in the prior art, the present application provides a method for reducing signaling overhead of network equipment, thereby saving resources, reducing channel congestion, and improving resource utilization efficiency.

For convenience of description, the network device is a base station, the terminal device is a UE, and some of the above information is DCI as an example.

FIG. 2 shows a method 200 provided by the present application, and the method 200 includes:

S210, the base station sends first information to the UE. Correspondingly, the UE receives the first information.

The first information indicates to monitor the first DCI format. The target information field #1 is included in the first DCI format. It should be understood that the first DCI format may include at least one DCI format without limitation.

Optionally, the first information indicates to monitor multiple DCI formats, and the multiple DCI formats include the first DCI format.

Optionally, the first information may be carried in radio resource control (radio resource control, RRC) signaling, or in other signaling/messages, without limitation. For example, the first information is carried by RRC signaling in the RRC connected state.

S220, the base station sends second information to the UE. Correspondingly, the UE receives the second information.

The second information indicates to monitor the second DCI format, and the second information may be carried in a DCI or a medium access control control element (medium access control control element, MAC CE). The second DCI format is a DCI format in which the target information field #1 is removed from the first DCI format. That is, the DCI size of the second DCI format is reduced compared to the DCI size of the first DCI format.

It should be understood that the second DCI format obtained after removing the target information field #1 from the first DCI format is the same DCI format as the first DCI format, or a DCI format different from the first DCI format, which is not limited.

For example, the DCI format obtained after removing one or more information fields from DCI format 1_1 can still be regarded as DCI format 1_1, or considered as a DCI format different from DCI format 1_1 (for example, called DCI format 1_1_0).

For example, for DCI format 1_1, target information field #1 can be one or more of the following:

carrier indicator, bandwidth part indicator, time domain resource assignment, virtual resource block to physical resource block mapping (VRB-to-PRB mapping), physical Resource block binding size indicator field (PRB bundling size indicator), rate matching indicator field (rate matching indicator), transmission configuration indication field (transmission configuration indication), channel reference signal request field (SRS request), code block group transmission information field (CBG transmission information), code block group flushing information (CBG flushing out information), demodulation reference signal initialization field (DMRS sequence initialization).

Optionally, compared with the first DCI format, the second DCI format may lack one or more information fields, that is, the target information field #1 may include one or more information fields.

Optionally, the second DCI format may also be a DCI format obtained by removing some bits of the target information field #1 in the first DCI format. That is, not all of the target information field #1 is removed, but some bits in the target information field #1 are removed. After some bits of the target information field #1 are removed, the DCI size (size) of the second DCI format is reduced compared to the DCI size of the first DCI format. Which bits of the target information field #1 are removed can be pre-configured by the network device or pre-defined by the protocol.

For example, the bits that can be removed in the target information field #1 are high order bits. For example, after the upper bits are removed, the target information field #1 changes from 4 bits to 3 bits, and the types of bit combinations in the target information field #1 change from a maximum of 16 types to a maximum of 8 types.

Optionally, if the DCI size of the first DCI format is reduced, the DCI sizes of DCIs corresponding to all radio network temporary identifiers (radio network temporary identifiers, RNTIs) scrambled in the first DCI format are reduced. That is to say, if the first DCI format is scrambled by the first RNTI and the second RNTI, the UE monitors the second DCI format scrambled by the first RNTI and the second RNTI when monitoring the second DCI format.

For example, the first DCI format is DCI format 1_1, and the DCI format 1_1 can be determined by a cell radio network temporary identity (C-RNTI), a configured scheduling-radio network temporary identity (CS-RNTI) ) and modulation and coding scheme-cell radio network temporary identity (modulation and coding scheme-cell radio network temporary identity, MCS-C-RNTI) scrambling, after the DCI size of DCI format 1_1 is reduced, the DCI scrambled by C-RNTI The DCI size of format 1_1, DCI format 1_1 scrambled by CS-RNTI, and DCI format 1_1 scrambled by MCS-C-RNTI is all reduced.

The DCI format is scrambled by the RNTI, which is also described as, the cyclic redundancy check (CRC) of the DCI format is scrambled by the RNTI.

Optionally, considering common search space set (common search space set, CSS set), or UE specific search space set (UE specific search space set, USS set), or common search space set and private search space The concentrated DCI 1_0 and DCI 0_0 are aligned by DCI size, then DCI 1_0 and DCI 0_0 can reduce the DCI size at the same time. That is, the target information field is removed at the same time. For example, DCI 1_0 includes information domain #1, DCI 0_0 includes information domain #2, and the UE is instructed to monitor DCI 1_0 that does not include information domain #1, then for DCI 0_0, the UE also monitors DCI 0_0 that does not include information domain #2. Optionally, after removing the target information field at the same time, DCI 1_0 and DCI 0_0 still perform DCI size alignment according to the DCI size alignment rule, for example, according to the DCI size alignment rule in the existing protocol. The above information domain #1 and information domain #2 specifically which information domains may be indicated by the network device or pre-defined by the protocol.

Optionally, considering that DCI 1_0 and DCI 0_0 series are associated with multiple RNTI types, and among them are paging radio network temporary identity (P-RNTI), system information radio network temporary identity (system information radio network DCI scrambled by temporary identity (SI-RNTI), random access radio network temporary identity (RA-RNTI) or temporary cell radio network temporary identity (TC-RNTI) The DCI size of the format should not be reduced. Therefore, even if the DCI size of the DCI format scrambled by C-RNTI is reduced, the DCI size of other RNTI scrambled DCI formats has not been reduced. Therefore, the reduced DCI size may not be applicable to DCI 1_0 and /or DCI 0_0 series. For example, the scheme of this application is only applicable to DCI 1_1 and/or DCI 0_1 series.

For simplicity, it should be understood that DCI n_m means DCI format n_m, where n and m are natural numbers.

As a possible way, before the base station sends the second information to the UE, the base station can determine that it is necessary to reduce the The DCI size of the first DCI format. On this basis, the base station sends the second information to the UE.

For example, if the bandwidth part (bandwidth part, BWP) configured by the base station to the UE is relatively small, the base station may send the second information to the UE.

For example, when the base station processes the same service (eg, video service, voice service), and the scheduling policy of the base station for the UE remains unchanged in a short period of time, the base station may send the second information to the UE.

For example, the base station determines that the channel state changes slowly according to channel state information (CSI) reported by the UE (for example, when the UE is in a static state, the channel state changes slowly), then the base station may send the second information to the UE.

For example, the number of UEs in the cell is small, and for each UE, the scheduling policy of the base station for the UE remains unchanged in a short period of time, the base station may send the second information to the UE.

For example, if the number of UEs in the cell is large, resulting in PDCCH blocking, the base station sends the second information to the UEs.

As another possible manner, the base station may periodically send the second information to the UE. The network device may configure the monitoring period of the second information, for example, configure the monitoring timing of the second information by configuring a search space set. For example, the monitoring period of the second information may be 40ms. The UE may monitor the second information periodically, and the network device may choose to send the second information at a timing for monitoring the second information.

S230. The UE monitors the second DCI format according to the second information when the second information is valid.

Optionally, the method further includes that the UE determines the reduced DCI size of the first DCI format from multiple DCI formats according to the second information, or the RRC message of the base station, or the followed protocol. That is to say, the UE determines from multiple DCI formats that the DCI size of which DCI format can be reduced.

The multiple DCI formats are the DCI formats that the UE is instructed to listen to.

As a method, the DCI size of which DCI format among multiple DCI formats is allowed to be reduced is pre-configured in the UE. At this time, the UE determines the DCI size that can reduce the first DCI format according to the preconfigured information, and then monitors the second DCI format according to the second information.

As another way, the DCI size of which DCI format among multiple DCI formats is allowed to be reduced is predefined by the protocol. At this time, the UE determines the DCI size that can reduce the first DCI format according to the followed protocol, and then monitors the second DCI format according to the second information.

As another manner, the DCI size of which DCI format is reduced among the multiple DCI formats is determined according to the second information. That is to say, the second information is also used to indicate the first DCI format from the multiple DCI formats. For example, the second information includes 1 bit for determining a DCI format from DCI 1_1 and DCI 0_1 as the DCI format whose DCI size is to be reduced, that is, the first DCI format. The second information also includes 1 bit for indicating whether to reduce the DCI size.

Optionally, compared with the first DCI format, which information fields are the target information fields #1 to remove in the second DCI format may also be pre-configured in the UE through RRC signaling, or pre-defined through the protocol , or indicated by the second information. That is to say, the second information may also be used to indicate which information domains are removed in the second DCI format compared with the first DCI format. See the description below for details.

It should be understood that the UE may monitor the second DCI format after the second information takes effect.

The mode of starting to take effect of the second information is configured by the network device, or predefined by the protocol. Several possible ways in which the second information becomes effective are introduced below.

Method 1:

The second information is carried in the DCI, and after the UE sends feedback information for the second information, the second information becomes effective. The DCI may be used for scheduling data (for example, for scheduling a physical downlink shared channel (PDSCH)), or may not be used for scheduling data, without limitation.

Exemplarily, after the UE sends the feedback information for the second information, the second information takes effect immediately.

Exemplarily, the second information takes effect at the beginning of the next symbol, or the next time slot, or the next subframe after the UE sends the feedback information for the second information.

Wherein, the symbol may be an orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbol, or a single carrier frequency division multiplexing (single carrier frequency division multiplexing, SCFDM) symbol, or other symbols.

Exemplarily, in an LTE system, a subframe may be 1 ms, a subframe may include 2 time slots, and a time slot may include 6 or 7 symbols. It should be understood that in other communication systems (such as NR systems), definitions of subframes, time slots, and symbols may be different. For example, a time slot includes 12 or 14 symbols, which is not limited in this application.

For example, the UE will send a hybrid automatic repeat request acknowledge (HARQ-ACK) feedback for the DCI, then after the UE sends the HARQ-ACK feedback for the DCI, the second information will take effect .

Method 2:

The second information is carried in the DCI. If the DCI is used to schedule a physical uplink shared channel (PUSCH), the second information becomes effective after the UE sends the PUSCH. For example, after sending the PUSCH, the second information takes effect immediately.

Method 3:

After the UE receives the second information interval duration #A, the second information takes effect.

For example, there is an interval of #A between the start (or end) of the time slot where the DCI carrying the second information is located and the start of the time slot where the second information takes effect.

For example, the second information takes effect at the Nth time slot after the UE receives the second information, where N is a positive integer. N may be predefined by network device configuration or protocol.

For another example, the duration #A is related to the duration for the UE to demodulate, decode and/or parse the second information. That is, the duration #A is related to the capability of the UE to process the second information. When the capability of the UE to process the second information is strong, the duration #A can be shorter; when the capability of the UE to process the second information is weak, the duration #A A can be longer. Specifically, the duration #A may be predefined by the protocol; or, the base station determines the duration #A according to the capability information or auxiliary information reported by the UE, and notifies the UE of the duration #A.

Exemplarily, the capability information reported by the UE is that the time length required by the UE to process the second information is 1 ms, and the auxiliary information reported by the UE is that the time length #A is suggested by the UE to be set to 2 ms. The base station determines the duration #A to be 1.5ms according to the capability information or auxiliary information reported by the UE, and notifies the UE of the duration #A.

For another example, the duration #A is related to the subcarrier spacing. For example, the greater the subcarrier spacing, the greater the number of time slots corresponding to the duration #A.

For another example, the duration #A is related to the start symbol of the DCI carrying the second information in the time slot. For example, if the DCI carrying the second information is located in the first 3 symbols in the time slot, then the duration #A is t1, or, the second information takes effect in the first time slot after the UE receives the second information; The DCI of the second information is located in the symbol after the first 3 symbols in the time slot, then the duration #A is t2, or, the second information takes effect in the second time slot after the UE receives the second information.

For another example, the second information is carried in the MAC CE, and the validation method of the second information may be the same as that of the MAC CE. For example, if the MAC CE takes effect 3ms after the UE sends the HARQ-ACK feedback for the MAC CE, the second information may also take effect 3ms after the UE sends the HARQ-ACK feedback for the MAC CE.

Optionally, when the second information takes effect, the UE may also monitor the first DCI format.

It should be understood that, when the second information takes effect, the UE may or may not monitor the first DCI format. The following sub-cases are described.

Case 1:

When the second information takes effect, the UE does not monitor the first DCI format.

In this way, the type of DCI size monitored by the UE may not change, or may be reduced, without increasing the complexity and power consumption of the UE.

Case 2:

When the second information takes effect, if the DCI size budget (budget) is not exceeded, or the capability of the UE is not exceeded, the UE may also monitor the first DCI format. For the base station, when the second information takes effect, the base station may send the DCI in the first DCI format, or may not send the DCI in the first DCI format. It should be understood that sending a certain DCI format in this document means sending DCI in a certain DCI format.

In this way, the type of DCI size monitored by the UE may not change, or may increase.

In this case, if the base station needs to send DCI in the first DCI format, the base station can directly send DCI in the first DCI format without waiting for the second information to fail or send the third information before sending the first DCI format DCI, which is conducive to the flexible scheduling of the base station according to the wireless environment and service requirements. Wherein, the third information is described in detail below.

Optionally, after the second information takes effect, if the UE monitors the first DCI format, even if the second information has not been effective for a preset period of time, or the UE has not received the third information, the UE stops monitoring the first DCI format. Two DCI formats.

Optionally, in this case, the base station may not configure the aforementioned preset duration to the UE.

Whether the UE monitors the first DCI format when the second information takes effect may be pre-configured by the base station, or indicated through dynamic signaling (for example, indicated by the second information), or pre-defined by a protocol.

According to the solution of the present application, the UE can monitor the second DCI format according to the instruction of the base station, and the DCI size of the second DCI format is lower than that of the first DCI format. Therefore, for the UE, when the UE parses the DCI in the second DCI format, the parsing time of the UE will be reduced accordingly, thereby saving the power consumption of the UE. For the base station, the base station can send DCI in the second DCI format, thereby reducing resources required for DCI transmission, reducing PDCCH blocking (or preventing PDCCH blocking), and improving resource utilization efficiency. That is, according to the solution of the present application, the communication process between the network device and the terminal device is optimized.

In addition, the second information and the third information are carried in DCI or MAC CE. Compared with carrying in RRC signaling, on the one hand, the RRC signaling has a longer delay in taking effect, and on the other hand, the overhead of RRC signaling is relatively large. On the other hand, the RRC signaling lasts for a long time after it takes effect, so the method of the present application can reduce the time delay, reduce the signaling overhead, and improve the flexibility of network equipment to configure terminal equipment and schedule resources.

Optionally, the method 200 also includes:

S240. When the second information is invalid, the UE monitors the first DCI format.

The following describes several ways in which the second information becomes invalid:

Method A:

After the second information becomes valid for a preset period of time, the second information becomes invalid, and the UE monitors the first DCI format and stops monitoring the second DCI format.

After the second information takes effect, both the UE and the base station can start a timer, and after the timer expires, the second information is tried. For example, if the timer increases from 0 to duration #B (an example of the preset duration), the second information becomes invalid; or, if the timer decreases from duration #B to 0, the second information becomes invalid.

Optionally, the duration #B may be configured by the base station to the UE through an RRC message or pre-defined by a protocol; or, the second information may include the information of the duration #B.

Optionally, when the second information takes effect (the timer has not expired), the base station sends the second information again, then when the resent second information becomes effective, the UE and the base station may restart the timer. It should be understood that restarting the timer means restarting the timer.

Optionally, different target information fields may be associated with different preset durations. At this time, for each preset duration, the UE and the base station need to maintain a timer.

For example, the first DCI format includes target information field #1 and target information field #2, and the second information indicates to monitor the second DCI format. If the second DCI format does not include target information field #1, after the second information takes effect, the second The effective duration of the second message is the preset duration #1;

If the second DCI format does not include the target information field #2, after the second information takes effect, the effective duration of the second information is the preset duration #2;

If the second DCI format does not include target information field #1 and target information field #2, after the second information takes effect, the UE and the base station maintain two preset durations. Assuming that the preset duration #1 is less than the preset duration #2, within the preset duration #1, the UE listens to the first DCI format that does not include the target information domain #1 and the target information domain #2; after the preset duration #1 ( For example, the timer corresponding to the preset duration #1 expires), the UE listens to the first DCI format that does not include the target information domain #2 but includes the target information domain #1; after the preset duration #2 (for example, the preset duration #2 corresponds to timer expires), the UE monitors the first DCI format including the target information field #1 and the target information field #2.

Method B:

The base station sends third information to the UE. Correspondingly, the UE receives third information from the base station.

The third information indicates to stop monitoring the second DCI format, and the third information is carried in DCI or MAC CE signaling.

The UE may monitor the first DCI format and stop monitoring the second DCI format according to the third information.

It should be understood that after the third information takes effect, the second information may be deemed invalid. The manner in which the third information begins to take effect may refer to the manner in which the second information begins to take effect above, and details will not be repeated here.

As a possible way, before the base station sends the third information to the UE, the base station may determine that no Reduce the DCI size of the first DCI format. On this basis, the base station sends third information to the UE.

For example, if the BWP configured by the base station to the UE is relatively large, the base station may send the third information to the UE.

For example, when the base station is processing multiple services, and the scheduling policy of the base station for the UE changes in a short period of time, the base station may send the third information to the UE.

For example, the base station determines that the channel state changes quickly according to the CSI reported by the UE, and the base station may send the third information to the UE.

For example, there are many UEs in the cell, and for each UE, the scheduling policy of the base station for the UE changes in a short period of time, and the base station may send the third information to the UE.

As another possible manner, the base station may periodically send the third information to the UE. Specifically, reference may be made to the periodic sending of the second information, and details are not repeated here.

It should be understood that the modes supported by the UE and the base station may be the foregoing mode A and/or mode B, which may be specifically defined through RRC message configuration or protocol of the base station.

For example, the modes supported by the UE and the base station are mode A and mode B; during the above-mentioned timer counting process, if the timer has not expired, but the UE receives the third information, the timer stops counting, and the UE monitors the first DCI format, stop listening to the second DCI format.

The second information and the third information will be described below.

Case 1:

The second information or the third information may be carried in a DCI (for example, DCI#1).

Optionally, the second information and the third information are carried by the same DCI format, or carried by different DCI formats. For example, the second information and the third information correspond to bit A in the same information field, and bit A is set to 1 to indicate the second information, which means to monitor the second DCI format, and bit A is set to 0 to indicate the third information, which means to stop monitoring the second DCI format. Two DCI formats.

The DCI carrying the second information/third information may be a scheduling DCI, such as DCI 1_1/0_1, or a non-scheduling DCI, such as DCI 2_0.

As a first possible situation, DCI#1 includes a first information field and a second information field, where the first information field is used to indicate whether to reduce the DCI size, and the second information field is used to determine from multiple DCI formats First DCI format.

Or, DCI#1 includes the first information field and does not include the second information field. If the second information field is not included, the UE determines the first DCI format from multiple DCI formats according to pre-configured information of the base station or a followed protocol.

For example, the first information field includes 1 bit (denoted as bit #A), bit #A takes "1" to indicate reduced DCI size; bit #A takes "0" to indicate not to reduce DCI size. The second information domain includes 1 bit (marked as bit #B), bit #B takes "1" to indicate DCI format 1_1, bit #B takes "0" to indicate DCI format 0_1, then the first information domain and the second information domain The meaning of the joint representation is shown in the table below.

Table 1

比特#ABit #A	比特#BBit #B	含义meaning
00	00	停止监听DCI格式0_1_0Stop listening to DCI format 0_1_0
00	11	停止监听DCI格式1_1_0Stop listening to DCI format 1_1_0
11	00	监听DCI格式0_1_0Monitor DCI format 0_1_0
11	11	监听DCI格式1_1_0Monitor DCI format 1_1_0

The DCI format 0_1_0 is the DCI format in which the target information field #1 is removed from the DCI format 0_1. The DCI format 1_1_0 is the DCI format in which the target information field #2 is removed from the DCI format 1_1. Regarding DCI format 0_1_0 and DCI format 1_1_0, details will not be described below. The target information domain #1 and the target information domain #2 may correspond to the same function or different functions, without limitation.

Optionally, if the first information field indicates reduced DCI size, if the UE is monitoring the first DCI format, the UE monitors the second DCI format according to DCI#1; if the UE is monitoring the second DCI format, the UE monitors the second DCI format according to DCI#1 Continue to monitor the second DCI format. At this time, if the above timer is running, the timer can be restarted or not restarted.

Optionally, if the first information field indicates not to reduce the DCI size, if the UE is monitoring the second DCI format, the UE monitors the first DCI format according to DCI#1, and stops monitoring the second DCI format; if the UE is monitoring the first DCI format format, the UE continues to monitor the first DCI format according to DCI#1.

Optionally, the first information field includes 1 bit, which is used to indicate whether the preconfigured target information field #1 is reduced. It should be understood that the target information field #1 may include at least one information field in the first DCI format.

Optionally, the first information field includes multiple bits.

As an example, the target information field #1 that can be reduced is divided into multiple information field groups, and the base station can configure which information fields are included in one information field group, or configure the group number of the information field. For example, if the base station configures information field group #1 and information field group #2, the first information field may include 2 bits, called bit #A1 and bit #A2, corresponding to information field group #1 and information field group # 2. Bit #A1 takes "1" to indicate that the second DCI format does not include the information field in the information field group #1, and bit #A1 takes "0" to indicate that the second DCI format includes the information field in the information field group #1; bit #A2 similar.

As a second possible situation, DCI#1 includes a third information field, and the third information field includes M bits, where M is greater than or equal to 1, and the M bits correspond to M DCI formats one by one, and the M bits Each bit in the bit is used to indicate whether the DCI size of the corresponding DCI format is reduced, for example, taking "1" means reducing the DCI size, taking "0" means not reducing the DCI size.

For example, the third information field includes 2 bits (denoted as bit #A, bit #B), bit #A corresponds to DCI format 0_1, and bit #B corresponds to DCI format 1_1, then the meaning of the third information field is shown in the following table Show.

Table 2

比特#ABit #A	比特#BBit #B	含义meaning
00	00	停止监听DCI格式0_1_0，停止监听DCI格式1_1_0Stop listening to DCI format 0_1_0, stop listening to DCI format 1_1_0
00	11	停止监听DCI格式0_1_0，监听DCI格式1_1_0Stop listening to DCI format 0_1_0, and listen to DCI format 1_1_0
11	00	监听DCI格式0_1_0，停止监听DCI格式1_1_0Monitor DCI format 0_1_0, stop monitoring DCI format 1_1_0
11	11	监听DCI格式0_1_0，监听DCI格式1_1_0Monitor DCI format 0_1_0, monitor DCI format 1_1_0

In this case, which target information field in the first DCI format is to be reduced is pre-configured by the base station.

The DCI format of DCI#1 may be the same as or different from the first DCI format.

As a third possible situation, the DCI format of DCI#1 is the first DCI format. That is, the DCI format of DCI#1 is the same as the first DCI format. In this case, DCI#1 includes a fourth information field, where the fourth information field is used to indicate whether to reduce the DCI size.

For example, the UE may determine that the DCI format of DCI#1 is DCI format 0_1, if the fourth information field indicates reduced DCI size, then the DCI#1 indicates to monitor DCI format 0_1_0; if the fourth information field indicates not to reduce the DCI size, then the DCI#1 indicates to stop listening to DCI format 0_1_0.

Optionally, the second DCI format also includes a fourth information field.

For example, DCI#1 with the format of DCI 0_1 indicates to reduce the DCI size. After it takes effect, the UE monitors DCI 0_1_0. DCI 0_1_0 also includes the fourth information field. The UE can receive DCI#2 when the monitoring format is DCI 0_1_0. The format of DCI#2 is DCI 0_1_0. The fourth information field in DCI#2 can indicate to continue to monitor DCI 0_1_0, Still stop listening to DCI 0_1_0.

As a fourth possible situation, assuming that the first DCI format includes N information fields, DCI#1 includes a fifth information field, and the fifth information field includes at least N bits, where the N bits are related to the N information fields Fields correspond to one-to-one, and each bit in the N bits is used to indicate whether to remove the corresponding information field. For example, a bit of "1" indicates that the corresponding information field is removed, and a bit of "0" indicates that the corresponding information field is not removed.

Wherein, the N information fields may be all information fields that may appear in the first DCI format described in the existing protocol. That is, even if the number of bits of a certain information field included in the first DCI format is configured by high-level signaling to be 0, the information field is also included in the N information fields, that is, the information field is also included in the calculation of N .

Alternatively, the N information fields may be information fields that may appear in all information fields that may appear in the first DCI format. That is, if the number of bits of a certain information field included in the first DCI format is configured to be 0 by high layer signaling, the information field is not included in the N information fields.

As some special cases, optionally, for DCI formats with DCI formats 0_0, 0_1, 0_2, 1_0, 1_1, 1_2, the N information fields may not include the information used to determine whether the DCI format is used to schedule uplink data or downlink The information domain of the data.

Optionally, the N information fields may not include other information fields, which may be specifically configured by the base station or pre-defined by a protocol.

In this case, as an example, the DCI format of DCI#1 is the third DCI format. The third DCI format may be a DCI format newly introduced by the protocol. For example, the third DCI format is referred to as DCI format 3_2, or other names, without limitation.

For example, the first DCI format includes 12 information domains (denoted as information domain #1 to information domain #12), then the fifth information domain includes 12 bits, wherein the nth bit corresponds to information domain #n, n Greater than or equal to 1 and less than or equal to 12. Then, when the nth bit is set to 0, it means that the second DCI format includes information field #n, and when the nth bit is set to 1, it means that the second DCI format does not include information field #n. When the 12 bits included in the fifth information field are all set to 0, it means not (or stopping) monitoring of the second DCI format.

In this case, as another example, DCI#1 further includes a sixth information field, where the sixth information field is used to determine the first DCI format from multiple DCI formats. The function of the sixth information field is the same as that of the above second information field.

Wherein, the base station can configure the DCI size of the third DCI format to the UE, or configure the number of bits of the fifth information field in the third DCI format, or the number of bits of the fifth information field is determined by the rules predefined by the protocol.

For example, the DCI format that the fifth information field can correspond to includes DCI format 0_1 and DCI format 1_1, the number of information fields included in DCI format 0_1 is N1, and the number of information fields included in DCI format 1_1 is N2, then the fifth information The number of bits of the field is equal to max{N1,N2}. The sixth information field is used to indicate which one of DCI format 0_1 and DCI format 1_1 the first DCI format is. Wherein, the determination manner of N1 and N2 refers to the determination manner of the parameter N above.

In order not to increase the type of DCI size monitored by the UE, the third DCI format can be aligned according to the DCI alignment rules in the existing protocol. In this way, the newly introduced third DCI format will not increase the type of DCI size monitored by the UE, and also It will not exceed the DCI size budget and will not increase UE complexity. For example, the DCI size of the third DCI format may be aligned with the DCI size of the DCI format scrambled by the C-RNTI or other RNTIs. For example, the DCI size of the third DCI format is aligned with the DCI size of the DCI format 2_0, or aligned with the DCI size of the DCI 1_1/0_1.

The CRC of the third DCI format can be scrambled by the third RNTI. The third RNTI can be an RNTI newly introduced for the third DCI format, for example, called size-reduce-RNTI. The purpose of introducing a new RNTI is to distinguish the third DCI format and existing DCI formats.

In this case, as another example, if the specific DCI format of the first DCI format has been pre-configured by the base station to the UE, or has been stipulated by the agreement, the above-mentioned sixth information field may not be included in DCI#1 .

Optionally, in this case, before the base station sends DCI#1 to the UE, the base station may determine one or more of the configuration information sent by the base station to the UE, service requirements, wireless channel environment, and the number of UEs in the cell. The target information field #1 in the first DCI format, in other words, determines which information fields can be removed in the first DCI format.

For example, if the BWP configured by the base station to the UE is BWP#A, then the target information domain #1 includes information domain #A; if the BWP configured by the base station to the UE is BWP#B, then the target information domain #1 includes information domain #B.

For example, when the base station is processing service #A, the base station's scheduling strategy for UE remains unchanged in a short period of time, and the target information domain #1 includes information domain #A; The scheduling policy remains unchanged in a short period of time, and the target information domain #1 includes information domain #B.

For example, if the degree of PDCCH congestion is degree #A, then the target information domain #1 includes information domain #A; if the degree of PDCCH congestion is degree #B, then the target information domain #1 includes information domain #A and information domain #B.

It should be understood that the target information field #1 in the first DCI format may change as the configuration information sent by the base station to the UE, service requirements, radio channel environment, and the number of UEs in the cell change.

Case 2:

The second information or the third information may be carried in a MAC CE (for example, MAC CE#1).

For details, reference may be made to the first possible situation, the second possible situation, and the fourth possible situation in the above-mentioned situation 1. That is, MAC CE#1 may include the first information domain and the second information domain, or include the third information domain, or include the fifth information domain (optionally, include the sixth information domain), which will not be repeated here .

Optionally, if it is not determined according to the fourth possible situation above which target information domain is reduced, the method further includes S250:

S250, the base station sends fourth information to the UE. Correspondingly, the UE acquires fourth information from the base station.

The fourth information is used to indicate that at least one information field among all the information fields included in the first DCI format is the target information field #1. In other words, the fourth information is used to indicate which information fields in the first DCI format the target information field #1 to remove is specifically.

As an example, assuming that the first DCI format includes N information fields, the fourth information includes at least N bits, where N bits correspond to the N information fields one-to-one, and each of the N bits is used for Indicates whether to remove the corresponding information field.

Regarding the N information fields, reference may be made to the above description, and details are not repeated here.

As a manner, the fourth information is carried in RRC signaling or other signaling/messages, which is not limited.

For example, the fourth information and the above first information are carried in the same RRC signaling.

Optionally, before the base station sends the fourth information to the UE, the base station may determine one or more of the configuration information sent by the base station to the UE, service requirements, wireless channel environment, and the number of UEs in the cell. In other words, determine which information fields can be removed in the first DCI format.

It should be understood that the target information field #1 includes at least one information field in the first DCI format.

Optionally, when the second information takes effect, the method 200 further includes:

S260, the base station sends the first DCI to the UE. Correspondingly, the UE receives the first DCI.

The DCI format of the first DCI is the second DCI format. That is, the target information field #1 is not included in the first DCI.

S270, the UE determines the scheduling of the UE by the base station according to the monitored first DCI and the target information field #1.

It should be understood that the complete information represented by the first DCI consists of the content indicated by the first DCI and the target information field #1.

Several ways for the UE to obtain the content indicated by the target information field #1 are introduced below.

Method 1:

The content indicated by the target information field #1 is configured by the base station through an RRC message, or the content indicated by the target information field #1 is predefined by the protocol.

At this time, the UE obtains the content indicated by the target information field #1 according to the configuration information or according to the provisions of the protocol.

Method 2:

The content indicated by the target information field #1 is included in the second DCI, and the second DCI is the last piece of DCI received by the UE in the format of the first DCI before the second information takes effect.

At this time, the UE acquires the content indicated by the target information field #1 from the second DCI.

For example, for the third DCI format as described above, if DCI#1 of the third DCI format indicates that the monitored second DCI format does not include information field #a, the second DCI is the information received by the UE before the second information takes effect. For the last piece of DCI in information field #a, the format of the second DCI is the first DCI format or the first DCI format that lacks other information fields except information field #a.

Method 3:

The content indicated by the target information field #1 is included in the second information, that is, DCI #1 or MAC CE #1. That is to say, when DCI#1 or MAC CE#1 indicates to monitor the second DCI format, it also indicates the value of the target information field #1.

For example, when the first DCI format is used to indicate whether the first DCI format (that is, to indicate its own format) reduces the DCI size, as described above, when the UE receives DCI#1, DCI#1 is the first DCI format, and DCI# The second information included in 1 indicates to monitor the second DCI format. After it takes effect, the UE monitors the second DCI format, and the UE receives DCI#2. DCI#2 is the second DCI format, and DCI#2 does not include the target information field #1. Then the value of the target information field #1 missing in DCI#2 is determined according to the value of the target information field #1 included in DCI#1, that is, the UE combines the value of the target information field #1 in DCI#1 and DCI#2 Together determine the complete DCI/scheduling information.

It should be understood that step S270 may be before step S260.

The method 200 aims at removing the target information field #1 in the existing first DCI format to obtain the second DCI format. In addition, in the process of communication between network devices and terminal devices, for some DCI formats, due to changes in the wireless environment and business requirements, the existing information fields in the DCI formats may not be able to meet the communication requirements of network devices. Based on this, the present application proposes a method 300. The method 300 is aimed at adding the target information field #2 to the existing first DCI format to obtain the fourth DCI format. As shown in Figure 3, the method 300 includes:

S310, the base station sends first information to the UE. Correspondingly, the UE receives the first information.

The first information indicates to monitor the first DCI format. Wherein, the first DCI format does not include the target information field #2.

S320, the base station sends fifth information to the UE. Correspondingly, the UE receives fifth information.

The fifth information indicates to monitor the fourth DCI format, and the fifth information may be carried in DCI or MAC CE. The fourth DCI format is a DCI format obtained after the target information field #2 is added in the first DCI format. That is, the DCI size of the fourth DCI format is increased compared to the DCI size of the first DCI format.

As a possible manner, before the base station sends the fifth information to the UE, the base station may determine that the DCI size of the first DCI format needs to be increased according to one or more of service requirements and wireless channel environment. On this basis, the base station sends fifth information to the UE.

For example, for service #A, it is necessary to add an information field for service #A, and then the base station sends fifth information to the UE.

Optionally, the target information field #2 includes at least one information field, and different information fields represent different meanings and functions. That is to say, compared with the first DCI format, the fourth DCI format may add one or more information fields.

S330. The UE monitors the fourth DCI format according to the fifth information.

Optionally, the method further includes that the UE determines to increase the DCI size of the first DCI format from multiple DCI formats. For this process, refer to S230.

Optionally, compared with the first DCI format, in the fourth DCI format, the number of bits corresponding to the newly added target information field #2, the corresponding meaning and function, the bit position in the first DCI format, etc. may be Pre-configured into the UE, or predefined through a protocol.

Optionally, the number of bits in the fourth DCI format may be preconfigured in the UE, or predefined by a protocol.

The manner in which the fifth information becomes effective may refer to the manner in which the second information becomes effective.

Optionally, when the fifth information takes effect, the UE may also monitor the first DCI format.

According to the method of this application, if the information field of the existing DCI format cannot meet the needs of the network device, the network device can add some information fields in the existing DCI format, and instruct the terminal device to monitor the DCI after adding some information fields Format. That is, the network device can dynamically adjust the DCI size of the DCI format according to the wireless environment, business requirements, etc., thereby improving the flexibility of the network device to send the DCI format, and optimizing the communication process between the terminal device and the network device. In this way, the first DCI format with a smaller DCI size can be used for most of the communication time, which can reduce resource overhead and save UE power consumption. According to the fifth information, the DCI size of the first DCI format can be dynamically increased, thereby improving Flexibility in resource scheduling.

Optionally, the method 300 also includes:

S340. When the fifth information is invalid, the UE monitors the first DCI format, and stops monitoring the fourth DCI format.

As a manner, after the fifth information becomes effective after a preset period of time, the fifth information becomes invalid, and the UE monitors the first DCI format and stops monitoring the fourth DCI format.

As another manner, the base station sends the sixth information to the UE. The sixth information indicates to stop monitoring the fourth DCI format. The UE may monitor the first DCI format and stop monitoring the fourth DCI format according to the sixth information.

The manner in which the sixth information becomes effective may refer to the manner in which the second information/third information becomes effective.

For the implementation manner of the fifth information and the sixth information, reference may be made to the implementation manner of the second information and the third information, and details are not repeated here.

Optionally, when the fifth information takes effect, the method 300 further includes:

S350, the base station sends the third DCI to the UE. Correspondingly, the UE receives the third DCI.

The DCI format of the third DCI is the fourth DCI format. That is, the third DCI includes the target information field #2.

According to the foregoing method, FIG. 4 is a communication device provided in an embodiment of the present application, and the communication device includes a transceiver unit 401 and a processing unit 402 .

Wherein, the transceiver unit 401 may be used to implement a corresponding communication function. The transceiver unit 401 may also be called a communication interface or a communication unit. The processing unit 402 may be configured to perform processing operations.

Optionally, the device further includes a storage unit, which can be used to store instructions and/or data, and the processing unit 402 can read the instructions and/or data in the storage unit, so that the device implements the above-mentioned method embodiments. action of the device.

As a first design, the apparatus may be the terminal device in the foregoing embodiments, or may be a component (such as a chip) of the terminal device.

Wherein, the transceiver unit and the processing unit may be used to implement related operations of the terminal device in each method embodiment above.

As a second design, the apparatus may be the network device in the foregoing embodiments, or may be a component (such as a chip) of the network device.

Wherein, the transceiver unit and the processing unit may be used to implement related operations of the network device in each method embodiment above.

It should be understood that the specific process of each unit performing the above corresponding steps has been described in detail in the above method embodiments, and for the sake of brevity, details are not repeated here.

It should also be understood that the means herein are embodied in the form of functional units. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor for executing one or more software or firmware programs (such as a shared processor, a dedicated processor, or a group processor, etc.) and memory, incorporated logic, and/or other suitable components to support the described functionality. In an optional example, those skilled in the art can understand that the device may specifically be the first network element in the above-mentioned embodiments, and may be used to execute each process corresponding to the first network element in the above-mentioned method embodiments and/or steps, or, the device may specifically be the network management network element in the above embodiments, and may be used to execute the various processes and/or steps corresponding to the network management network elements in the above method embodiments. In order to avoid repetition, it is not repeated here repeat.

The above-mentioned communication device has the function of implementing the corresponding steps performed by the device in the above-mentioned method. The functions may be implemented by hardware, or may be implemented by executing corresponding software through hardware. The hardware or software includes one or more modules corresponding to the above-mentioned functions; for example, the transceiver unit can be replaced by a transceiver (for example, the sending unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver ), and other units, such as a processing unit, can be replaced by a processor to respectively perform the sending and receiving operations and related processing operations in each method embodiment.

In addition, the above-mentioned transceiver unit 401 may also be a transceiver circuit (for example, may include a receiving circuit and a sending circuit), and the processing unit may be a processing circuit.

It should be noted that the device in FIG. 4 may be the device in the foregoing method embodiment, or may be a chip or a chip system, for example: a system on chip (system on chip, SoC). Wherein, the transceiver unit may be an input-output circuit or a communication interface; the processing unit is a processor or a microprocessor or an integrated circuit integrated on the chip. It is not limited here.

The embodiment of the present application also provides a communication device, as shown in FIG. 5 , including: a processor 501 and a communication interface 502 . The processor 501 is configured to execute computer programs or instructions stored in the memory 503, or read data stored in the memory 503, so as to execute the methods in the above method embodiments. Optionally, there are one or more processors 501 . The communication interface 502 is used for receiving and/or sending signals. For example, the processor 501 is configured to control the communication interface 502 to receive and/or send signals.

Optionally, as shown in FIG. 5 , the communication device further includes a memory 503, and the memory 503 is used to store computer programs or instructions and/or data. The memory 503 can be integrated with the processor 501, or can also be set separately. Optionally, there are one or more memories 503 .

Optionally, the processor 501, the communication interface 502, and the memory 503 are connected to each other through a bus 504; the bus 504 may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA ) bus, etc. The above-mentioned bus 504 can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 5 , but it does not mean that there is only one bus or one type of bus.

For example, the processor 501 is configured to execute computer programs or instructions stored in the memory 503, so as to implement related operations of the network device in each method embodiment above.

As another example, the processor 501 is configured to execute the computer program or instruction stored in the memory 503, so as to implement related operations of the terminal device in the above method embodiments.

It should be understood that the processor (such as the processor 501) mentioned in the embodiment of the present application may be a central processing unit (central processing unit, CPU), a network processor (network processor, NP) or a combination of CPU and NP. The processor may further include hardware chips. The aforementioned hardware chip may be an application-specific integrated circuit (application-specific integrated circuit, ASIC), a programmable logic device (programmable logic device, PLD) or a combination thereof. The aforementioned PLD may be a complex programmable logic device (complex programmable logic device, CPLD), a field-programmable gate array (field-programmable gate array, FPGA), a general array logic (generic array logic, GAL) or any combination thereof.

It should also be understood that the memory (such as the memory 503 ) mentioned in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically programmable Erases programmable read-only memory (electrically EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM), which acts as external cache memory.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated. to another system, or some features may be ignored, or not implemented. In another point, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.

A unit described as a separate component may or may not be physically separated, and a component displayed as a unit may or may not be a physical unit, that is, it may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions are realized in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

The above is only the specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the application, and should cover Within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

A communication method, characterized in that, comprising:

The terminal device receives first information from the network device, the first information indicates to monitor the first downlink control information DCI format, and the first DCI format includes a target information field;

The terminal device receives second information from the network device, the second information indicates to monitor a second DCI format, and the second DCI format is a DCI format in which the target information field is removed from the first DCI format, so The second information is carried in DCI or MAC CE;

The terminal device monitors the second DCI format according to the second information when the second information takes effect.
The method according to claim 1, characterized in that,

The second information is carried in the DCI, and the second information takes effect after the terminal device sends feedback information for the second information.
The method according to claim 1 or 2, characterized in that,

The method also includes:

The terminal device starts a timer from when the second information takes effect;

After the timer expires, the second information becomes invalid, the terminal device monitors the first DCI format, and stops monitoring the second DCI format.
The method according to claim 1 or 2, characterized in that,

The method also includes:

The terminal device receives third information from the network device, the third information indicates to stop monitoring the second DCI format, and the third information is carried in DCI or MAC CE;

The terminal device monitors the first DCI format and stops monitoring the second DCI format according to the third information.
The method according to any one of claims 1-4, characterized in that,

The first information indicates to monitor multiple DCI formats, and the multiple DCI formats include the first DCI format;

The method also includes:

The terminal device determines a reduced DCI size of the first DCI format from the multiple DCI formats according to the second information.
The method according to any one of claims 1-5, wherein the method further comprises:

The terminal device receives fourth information from the network device, where the fourth information is used to indicate that at least one information field among all information fields included in the first DCI format is the target information field.
The method according to any one of claims 1-6, characterized in that,

The content indicated by the target information field is configured by the network device through a radio resource control RRC message, or the content indicated by the target information field is included in the last item received by the terminal device in the first DCI format DCI;

The method further includes: the terminal device determines the scheduling of the terminal device by the network device according to the monitored DCI in the second DCI format and the target information field.
The method according to any one of claims 1-7, further comprising:

When the second information is valid, the terminal device also monitors the first DCI format.
A communication method, characterized in that, comprising:

The network device sends first information to the terminal device, the first information indicates to monitor the first downlink control information DCI format, and the first DCI format includes a target information field;

The network device sends second information to the terminal device, the second information indicates to monitor a second DCI format, and the second DCI format is a DCI format in which the target information field is removed from the first DCI format , the second information is carried in a DCI or a medium access control control element MAC CE.
The method according to claim 9, wherein when the second information is valid, the method further comprises:

The network device sends the first DCI to the terminal device, and the DCI format of the first DCI is the second DCI format.
The method according to claim 9 or 10, characterized in that,

The ways in which the second information becomes effective include:

The second information is carried in the DCI, and the second information takes effect after receiving feedback information from the terminal device for the second information.
The method according to any one of claims 9-11, wherein the method further comprises:

The network device sends third information to the terminal device, the third information indicates to stop monitoring the second DCI format, and the third information is carried in DCI or MAC CE.
The method according to any one of claims 9-12, wherein the method further comprises:

The network device sends fourth information to the terminal device, where the fourth information is used to indicate that at least one information field among all information fields included in the first DCI format is the target information field.
A communication device, characterized by comprising a unit for performing the method in any one of claims 1-13.
A communication device, characterized by comprising: a communication interface and a processor, where the processor is configured to execute computer programs or instructions, so that the communication device executes the method according to any one of claims 1-13.
A computer-readable storage medium, characterized in that it includes a computer program or an instruction, and when the computer program or the instruction is run on a computer, the computer executes the computer program described in any one of claims 1-13. Methods.
A computer program product, characterized by comprising instructions, which, when run on a computer, cause the computer to execute the method according to any one of claims 1-13.