CN113114443A

CN113114443A - Method and device for sending and receiving downlink control information, base station and user equipment

Info

Publication number: CN113114443A
Application number: CN202110401341.XA
Authority: CN
Inventors: 徐勋华
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2021-07-13

Abstract

The embodiment of the application provides a method And a device for sending And receiving downlink control information, a base station And user equipment, wherein in the method for sending the downlink control information, when the base station finds that uplink desynchronization occurs in a connection state of UE, a DCI format used for DCI transmission is determined to be format1_1, And then the DCI is sent in format1_1 in a specific search space of the user equipment corresponding to the format1_1, wherein the DCI comprises PDCCH Order, so that the PDCCH Order can be sent in a search space of which the search space type is format 0-1-And-1-1, the time delay of the UE for processing the uplink desynchronization state can be shortened, And the allocation efficiency of the PDCCH cannot be influenced.

Description

Method and device for sending and receiving downlink control information, base station and user equipment

[ technical field ] A method for producing a semiconductor device

The embodiment of the application relates to the technical field of communication, in particular to a method and a device for sending and receiving downlink control information, a base station and user equipment.

[ background of the invention ]

In a New Radio (NR) system of a fifth generation mobile communication technology (5th-generation, 5G), when a User Equipment (UE) is in a connected state, if a base station finds that the UE is out of uplink synchronization, the base station sends a physical downlink control channel (PDCCH Order) to notify the UE that the UE is out of uplink synchronization, and after receiving the PDCCH Order, the UE needs to send a Random Access Channel (RACH) to complete an uplink synchronization process again. The PDCCH Order is carried in Downlink Control Information (DCI), but in the related art, the DCI is in 1_0 format (format 1_0), if the base station does not configure a UE Specific Search space (UE Specific Search space) with a Search space type of format 0-0-And-1-0, the base station needs to transmit the DCI of format1_0 on a common Search space (common Search space), which introduces a large delay, And the UE may process an uplink out-of-step state in a relatively long time.

On the other hand, if the base station configures a ue-specific search space with a search space type of formats0-0-And-1-0, the allocation efficiency of the Physical Downlink Control Channel (PDCCH) is reduced because the ue-specific search space needs to occupy the CCE resources available to the system.

[ summary of the invention ]

The embodiment of the application provides a method and a device for sending downlink control information and user equipment, so as to shorten the delay of UE for processing an uplink out-of-step state and not influence the distribution efficiency of a PDCCH.

In a first aspect, an embodiment of the present application provides a method for sending downlink control information, which is applied to a base station, and the method includes: when the base station finds that the user equipment is in uplink out-of-step in a connection state, determining that a Downlink Control Information (DCI) format used for DCI transmission is format1_ 1; sending DCI with format1_1 on a user equipment specific search space corresponding to format1_1, where the DCI includes a physical downlink control channel signaling, and the physical downlink control channel signaling is used to indicate that user equipment has uplink out-of-synchronization.

In the method for sending downlink control information, when a base station finds that uplink out-of-step occurs in a connection state of a UE, the DCI format used for DCI transmission is determined to be format1_1, And then the DCI is sent in format1_1 on a user equipment specific search space corresponding to the format1_1, where the DCI includes PDCCH Order, so that the PDCCH Order can be sent in a search space with a search space type of formats0-1-And-1-1, which not only can shorten the delay of the UE in processing the uplink out-of-step state, but also does not affect the PDCCH allocation efficiency.

In one possible implementation manner, the DCI sent in format1_1 includes a frequency domain resource allocation field; the DCI including the physical downlink control channel signaling comprises: and when the value of the frequency domain resource allocation field is a preset value, the signaling carried by the frequency domain resource allocation field is the physical downlink control channel signaling.

In one possible implementation manner, the DCI sent by the format1_1 further includes: a modulation and coding strategy field, a new data indication field, a redundancy version field, a hybrid automatic repeat request process number field, a power control command field for scheduling a physical uplink control channel, a physical uplink control channel resource indication field and an uplink sounding reference signal request field of the transport block 1.

In a second aspect, an embodiment of the present application provides a method for receiving downlink control information, where the method is applied to a user equipment, and the method includes: demodulating a Physical Downlink Control Channel (PDCCH) in a user equipment specific search space corresponding to a format1_1 to obtain a Downlink Control Information (DCI) in a format1_ 1; obtaining a physical downlink control channel signaling from the DCI in the format1_ 1; and sending a random access channel according to the physical downlink control channel signaling.

In the method for receiving downlink control information, a PDCCH is demodulated in a user equipment specific search space corresponding to format1_1, and DCI in format1_1 is obtained; then, the PDCCH Order is obtained from the DCI in format1_1, and finally, the RACH is transmitted according to the PDCCH Order. Therefore, the UE can receive the PDCCH Order in the search space with the search space type of the formats0-1-And-1-1, And further the UE can know that the UE is in the uplink out-of-step state currently according to the PDCCH Order, so that the UE can send the RACH as soon as possible, the time delay of the UE for processing the uplink out-of-step state is shortened, And the distribution efficiency of the PDCCH cannot be influenced.

In a possible implementation manner, the obtaining the physical downlink control channel signaling from the DCI in the format1_1 format includes: analyzing the DCI in the format1_1 to obtain a frequency domain resource allocation field in the DCI; and when the value of the frequency domain resource allocation field is a preset value, determining the signaling carried by the frequency domain resource allocation field as the physical downlink control channel signaling.

In a third aspect, an embodiment of the present application provides an apparatus for sending downlink control information, where the apparatus is disposed in a base station, and the apparatus includes: a determining module, configured to determine, when the base station finds that the user equipment is in the uplink out-of-step in the connection state, that a DCI format used for DCI transmission of downlink control information is format1_ 1; a sending module, configured to send DCI with format1_1 in a user equipment specific search space corresponding to format1_1, where the DCI includes a physical downlink control channel signaling, and the physical downlink control channel signaling is used to indicate that user equipment has uplink out-of-synchronization.

In one possible implementation manner, the DCI sent by the sending module in format1_1 includes a frequency domain resource allocation field; the DCI including the physical downlink control channel signaling comprises: and when the value of the frequency domain resource allocation field is a preset value, the signaling carried by the frequency domain resource allocation field is the physical downlink control channel signaling.

In a fourth aspect, an embodiment of the present application provides an apparatus for receiving downlink control information, where the apparatus is configured in a user equipment, and the apparatus includes: a demodulation module, configured to demodulate a physical downlink control channel in a user equipment specific search space corresponding to format1_1, to obtain DCI of format1_ 1; an obtaining module, configured to obtain a physical downlink control channel signaling from the DCI in format1_1 obtained by the demodulating module; and a sending module, configured to send a random access channel according to the physical downlink control channel signaling obtained by the obtaining module.

In one possible implementation manner, the obtaining module is specifically configured to parse the DCI in the format1_1 to obtain a frequency domain resource allocation field in the DCI; and when the value of the frequency domain resource allocation field is a preset value, determining the signaling carried by the frequency domain resource allocation field as the physical downlink control channel signaling.

In a fifth aspect, an embodiment of the present application provides a base station, including: at least one processor; and at least one memory communicatively coupled to the processor, wherein: the memory stores program instructions executable by the processor, the processor calling the program instructions to be able to perform the method provided by the first aspect.

In a sixth aspect, embodiments of the present application provide a non-transitory computer-readable storage medium storing computer instructions for causing a computer to perform the method provided in the first aspect.

In a seventh aspect, an embodiment of the present application provides a user equipment, including: at least one processor; and at least one memory communicatively coupled to the processor, wherein: the memory stores program instructions executable by the processor, the processor calling the program instructions to be able to perform the method provided by the second aspect.

In an eighth aspect, embodiments of the present application provide a non-transitory computer-readable storage medium storing computer instructions that cause the computer to perform the method provided by the second aspect.

It should be understood that the third, fifth, and sixth aspects of the embodiments of the present application are consistent with the technical solution of the first aspect of the embodiments of the present application, and beneficial effects obtained by various aspects and corresponding possible implementation manners are similar and will not be described again;

the fourth, seventh and eighth aspects of the embodiment of the present application are consistent with the technical solution of the second aspect of the embodiment of the present application, and the beneficial effects obtained by the aspects and the corresponding possible implementation are similar, and are not described again.

[ description of the drawings ]

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a flowchart of a method for sending downlink control information according to an embodiment of the present application;

fig. 2 is a flowchart of a method for receiving downlink control information according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a device for sending downlink control information according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a device for receiving downlink control information according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a UE according to an embodiment of the present application.

[ detailed description ] embodiments

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

In the current 5G NR standard, the PDCCH Order bearer is sent in DCI, And in the related art, this DCI is format1_0, And the DCI of format1_0 needs to be sent on a UE Specific Search space (UE Specific Search space) with a Search space type of formats0-0-And-1-0, or on a common Search space (common Search space).

This may introduce some problems, in particular if the base station does not configure a user equipment specific search space of search space type format 0-0-And-1-0, then the base station needs to send DCI on the common search space. However, due to the limitation of the blind decoding capability of the DCI of the UE, the existing protocol specifies that when the UE blindly decodes the DCI in the common search space, it needs to blindly decode a system message radio network temporary identifier (SI-RNTI), a random access radio network temporary identifier (RA-RNTI), and a paging (P-RNTI) before a cell (cell radio network temporary identifier, C-RNTI) is blindly decoded.

Because the SI-RNTI needs to be monitored only when the system message is updated, the RA-RNTI only needs to be monitored in the message 2 (MSG 2) receiving window in the RACH procedure, and the P-RNTI only needs to be monitored in the paging cycle when the UE is in the connected state, the UE has few opportunities to know the SI-RNTI, the RA-RNTI, and the P-RNTI, so that the UE has few opportunities to monitor the PDCCH Order, and if the base station sends the PDCCH Order on the common search space, a large delay is introduced, which may cause the UE to process the uplink desynchronizing state in a relatively long time.

However, if the base station configures the UE-specific search space with the search space type of formats0-0-And-1-0, since this type of search space needs to occupy the physical CCE resources available to the system And the UE cannot assume when the base station sends PDCCH Order, the UE must preferentially detect the UE-specific search space with this search space type of formats0-0-And-1-0, which occupies the number of blind decoding candidates (candidates), resulting in some search spaces being discarded And further reducing the PDCCH allocation efficiency.

Fig. 1 is a flowchart of a method for transmitting downlink control information according to an embodiment of the present application, where the method for transmitting downlink control information according to the embodiment may be applied to a base station, and as shown in fig. 1, the method for transmitting downlink control information may include:

step 101, when the base station finds that the UE is out of synchronization in the uplink in the connected state, it determines that the DCI format used for DCI transmission is format1_ 1.

Step 102, sending DCI with format1_1 on a UE-specific search space corresponding to format1_1, where the DCI includes physical downlink control channel signaling (PDCCH Order) for indicating that the UE has uplink out-of-synchronization.

In this embodiment, when the base station finds that the UE is out of synchronization in the uplink in the connected state, the base station determines to transmit the DCI using the format1_1, and specifically, the DCI sent by the format1_1 includes a Frequency domain resource allocation (Frequency domain resource allocation) field; thus, the DCI including the PDCCH Order may be: and when the value of the frequency domain resource allocation field is a preset value, the signaling carried by the frequency domain resource allocation field is PDCCH Order.

The predetermined value may be set according to system performance and/or implementation requirements during specific implementation, and the size of the predetermined value is not limited in this embodiment, for example, the predetermined value may be 1. That is, when the value of the frequency domain resource allocation field is 1, it may be determined that the signaling carried by the frequency domain resource allocation field is PDCCH Order.

In addition, in the present embodiment, as in the case of transmitting DCI in format1_0, the remaining bits of DCI transmitted in format1_1 are reserved bits except for the PDCCH Order of 17 bits. Specifically, the DCI transmitted in the format1_1 may further include: a modulation and coding strategy field, a new data indication field, a redundancy version field, a hybrid automatic repeat request process number field, a power control command field for scheduling a physical uplink control channel, a physical uplink control channel resource indication field and an uplink sounding reference signal request field of the transport block 1.

That is, in the DCI transmitted in format1_1, the fields that must exist after the frequency domain resource allocation field include:

a modulation and coding strategy (Mcs of Transport block 1) field of Transport block 1 is 5 bits;

a New data indicator (New data indicator) field 1 bit;

a Redundancy version (Redundancy version) field 2 bits;

a hybrid automatic repeat request Process num (HARQ Process num) field of 4 bits;

a transmit power control command for scheduled physical uplink control channel (TPC command for scheduled PUCCH) field 2 bits;

a physical uplink control channel resource indicator (PUCCH resource indicator) field 3 bits;

the uplink sounding reference signal request (SRS request) field is at least 2 bits.

Since these fields have 19 bits in total, the PDCCH Order is carried in the format1_1 DCI, and the number of bits of the DCI transmitted in format1_1 does not need to be changed.

Fig. 2 is a flowchart of a method for receiving downlink control information according to an embodiment of the present application, where the method for receiving downlink control information according to the embodiment may be applied to a UE, and as shown in fig. 2, the method may include:

step 201, demodulating PDCCH in the ue-specific search space corresponding to format1_1 to obtain DCI in format1_ 1.

Step 202, obtaining physical downlink control channel signaling (PDCCH Order) from the DCI in format1_ 1.

Specifically, obtaining the PDCCH Order from the DCI in format1_1 format may be: analyzing the DCI with the format of format1_1 to obtain a frequency domain resource allocation field in the DCI; and when the value of the frequency domain resource allocation field is a preset value, determining that the signaling carried by the frequency domain resource allocation field is PDCCH Order.

And step 203, sending RACH according to the PDCCH Order.

The foregoing description of specific embodiments of the present application has been presented. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.

Fig. 3 is a schematic structural diagram of a downlink control information transmitting apparatus according to an embodiment of the present application, where the downlink control information transmitting apparatus may be disposed in a base station, and as shown in fig. 3, the downlink control information transmitting apparatus may include: a determination module 31 and a transmission module 32;

a determining module 31, configured to determine, when the base station finds that the UE is in the connected state and has uplink out-of-step, that a DCI format used for DCI transmission is format1_ 1;

a sending module 32, configured to send DCI with format1_1 in a UE-specific search space corresponding to format1_1, where the DCI includes PDCCH Order, and the PDCCH Order is used to indicate that the UE has uplink out-of-synchronization.

In this embodiment, the DCI sent by the sending module 32 in format1_1 includes a frequency domain resource allocation field; the DCI including the PDCCH Order may be: and when the value of the frequency domain resource allocation field is a preset value, the signaling carried by the frequency domain resource allocation field is PDCCH Order.

The sending apparatus of the downlink control information provided in the embodiment shown in fig. 3 may be used to execute the technical solution of the method embodiment shown in fig. 1 in the present application, and the implementation principle and the technical effect of the technical solution may further refer to the related description in the method embodiment.

Fig. 4 is a schematic structural diagram of a device for receiving downlink control information according to an embodiment of the present application, where the device for receiving downlink control information is disposed in a UE, and as shown in fig. 4, the device for receiving downlink control information may include: a demodulation module 41, an acquisition module 42 and a transmission module 43;

a demodulation module 41, configured to demodulate a PDCCH in a ue-specific search space corresponding to format1_1, to obtain DCI of format1_ 1;

an obtaining module 42, configured to obtain PDCCH Order from the DCI in format1_1 format obtained by the demodulation module 41;

and a sending module 43, configured to send the RACH according to the PDCCH Order obtained by the obtaining module 42.

In this embodiment, the obtaining module 42 is specifically configured to parse the DCI in the format1_1 to obtain a frequency domain resource allocation field in the DCI; and when the value of the frequency domain resource allocation field is a preset value, determining that the signaling carried by the frequency domain resource allocation field is PDCCH Order.

The apparatus for receiving downlink control information provided in the embodiment shown in fig. 4 may be used to execute the technical solution of the method embodiment shown in fig. 2 in this application, and the implementation principle and the technical effect may further refer to the related description in the method embodiment.

Fig. 5 is a schematic structural diagram of a base station according to an embodiment of the present application, and as shown in fig. 5, the base station may include at least one processor; and at least one memory communicatively coupled to the processor, wherein: the memory stores program instructions executable by the processor, and the processor calls the program instructions to execute the method for transmitting the downlink control information according to the embodiment shown in fig. 1.

Fig. 5 shows a block diagram of an exemplary base station suitable for use in implementing embodiments of the present application. The base station shown in fig. 5 is only an example, and should not bring any limitation to the functions and the scope of the application of the embodiments.

As shown in fig. 5, the base station is in the form of a general purpose computing device. Components of the base station may include, but are not limited to: one or more processors 410, a communication interface 420, a memory 430, and a communication bus 440 that connects the various components (including the memory 430, the communication interface 420, and the processing unit 410). In addition, the base station may further include other functional modules, such as a modulation and demodulation module, which is not shown in fig. 5.

Communication bus 440 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, or a local bus using any of a variety of bus architectures. For example, communication bus 440 may include, but is not limited to, an Industry Standard Architecture (ISA) bus, a micro channel architecture (MAC) bus, an enhanced ISA bus, a Video Electronics Standards Association (VESA) local bus, and a Peripheral Component Interconnect (PCI) bus.

The base station typically includes a variety of computer system readable media. Such media may be any available media that is accessible by the base station and includes both volatile and nonvolatile media, removable and non-removable media.

Memory 430 may include computer system readable media in the form of volatile memory, such as Random Access Memory (RAM) and/or cache memory. Memory 430 may include at least one program product having a set (e.g., at least one) of program modules that are configured to carry out the functions of the embodiments of the application illustrated in fig. 1.

A program/utility having a set (at least one) of program modules, including but not limited to an operating system, one or more application programs, other program modules, and program data, may be stored in memory 430, each of which examples or some combination may include an implementation of a network environment. The program modules generally perform the functions and/or methods of the embodiments described herein with respect to fig. 1.

The processor 410 executes programs stored in the memory 430 to perform various functional applications and data processing, for example, to implement the method for transmitting downlink control information according to the embodiment shown in fig. 1 of the present application.

Fig. 6 is a schematic structural diagram of a UE according to an embodiment of the present application, and as shown in fig. 6, the UE may include at least one processor; and at least one memory communicatively coupled to the processor, wherein: the memory stores program instructions executable by the processor, and the processor calls the program instructions to execute the method for receiving downlink control information according to the embodiment shown in fig. 2.

The user equipment may be an intelligent terminal device such as a smart phone, a smart watch, or a tablet computer, and the form of the user equipment is not limited in this embodiment.

For example, fig. 6 illustrates a schematic structural diagram of a UE by taking a smart phone as an example, as shown in fig. 6, the UE100 may include a processor 110, an external memory interface 120, an internal memory 121, a Universal Serial Bus (USB) interface 130, a charging management module 140, a power management module 141, a battery 142, an antenna 1, an antenna 2, a mobile communication module 150, a wireless communication module 160, an audio module 170, a speaker 170A, a receiver 170B, a microphone 170C, an earphone interface 170D, a sensor module 180, a key 190, a motor 191, an indicator 192, a camera 193, a display screen 194, a Subscriber Identity Module (SIM) card interface 195, and the like.

It is to be understood that the illustrated structure of the embodiment of the present application does not constitute a specific limitation to the UE 100. In other embodiments of the present application, the UE100 may include more or fewer components than shown, or combine certain components, or split certain components, or a different arrangement of components. The illustrated components may be implemented in hardware, software, or a combination of software and hardware.

Processor 110 may include one or more processing units, such as: the processor 110 may include an Application Processor (AP), a modem processor, a Graphics Processing Unit (GPU), an Image Signal Processor (ISP), a controller, a video codec, a Digital Signal Processor (DSP), a baseband processor, and/or a neural-Network Processing Unit (NPU), etc. The different processing units may be separate devices or may be integrated into one or more processors.

The controller can generate an operation control signal according to the instruction operation code and the timing signal to complete the control of instruction fetching and instruction execution.

A memory may also be provided in processor 110 for storing instructions and data. In some embodiments, the memory in the processor 110 is a cache memory. The memory may hold instructions or data that have just been used or recycled by the processor 110. If the processor 110 needs to reuse the instruction or data, it can be called directly from the memory. Avoiding repeated accesses reduces the latency of the processor 110, thereby increasing the efficiency of the system.

The processor 110 executes various functional applications and data processing by running programs stored in the internal memory 121, for example, to implement the method for receiving downlink control information according to the embodiment shown in fig. 2 of the present application.

In some embodiments, processor 110 may include one or more interfaces. The interface may include an integrated circuit (I2C) interface, an integrated circuit built-in audio (I2S) interface, a Pulse Code Modulation (PCM) interface, a universal asynchronous receiver/transmitter (UART) interface, a Mobile Industry Processor Interface (MIPI), a general-purpose input/output (GPIO) interface, a Subscriber Identity Module (SIM) interface, and/or a Universal Serial Bus (USB) interface, etc.

The charging management module 140 is configured to receive charging input from a charger. The charger may be a wireless charger or a wired charger. In some wired charging embodiments, the charging management module 140 may receive charging input from a wired charger via the USB interface 130. In some wireless charging embodiments, the charging management module 140 may receive a wireless charging input through a wireless charging coil of the UE 100. The charging management module 140 may also supply power to the UE100 through the power management module 141 while charging the battery 142.

The power management module 141 is used to connect the battery 142, the charging management module 140 and the processor 110. The power management module 141 receives input from the battery 142 and/or the charge management module 140, and supplies power to the processor 110, the internal memory 121, the display 194, the camera 193, the wireless communication module 160, and the like. The power management module 141 may also be used to monitor parameters such as battery capacity, battery cycle count, battery state of health (leakage, impedance), etc. In some other embodiments, the power management module 141 may also be disposed in the processor 110. In other embodiments, the power management module 141 and the charging management module 140 may be disposed in the same device.

The wireless communication function of the UE100 may be implemented by the antenna 1, the antenna 2, the mobile communication module 150, the wireless communication module 160, a modem processor, a baseband processor, and the like.

The antennas 1 and 2 are used for transmitting and receiving electromagnetic wave signals. Each antenna in the UE100 may be used to cover a single or multiple communication bands. Different antennas can also be multiplexed to improve the utilization of the antennas. For example: the antenna 1 may be multiplexed as a diversity antenna of a wireless local area network. In other embodiments, the antenna may be used in conjunction with a tuning switch.

The mobile communication module 150 may provide a solution including 2G/3G/4G/5G wireless communication applied on the UE 100. The mobile communication module 150 may include at least one filter, a switch, a power amplifier, a Low Noise Amplifier (LNA), and the like. The mobile communication module 150 may receive the electromagnetic wave from the antenna 1, filter, amplify, etc. the received electromagnetic wave, and transmit the electromagnetic wave to the modem processor for demodulation. The mobile communication module 150 may also amplify the signal modulated by the modem processor, and convert the signal into electromagnetic wave through the antenna 1 to radiate the electromagnetic wave. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the processor 110. In some embodiments, at least some of the functional modules of the mobile communication module 150 may be disposed in the same device as at least some of the modules of the processor 110.

The modem processor may include a modulator and a demodulator. The modulator is used for modulating a low-frequency baseband signal to be transmitted into a medium-high frequency signal. The demodulator is used for demodulating the received electromagnetic wave signal into a low-frequency baseband signal. The demodulator then passes the demodulated low frequency baseband signal to a baseband processor for processing. The low frequency baseband signal is processed by the baseband processor and then transferred to the application processor. The application processor outputs a sound signal through an audio device (not limited to the speaker 170A, the receiver 170B, etc.) or displays an image or video through the display screen 194. In some embodiments, the modem processor may be a stand-alone device. In other embodiments, the modem processor may be provided in the same device as the mobile communication module 150 or other functional modules, independent of the processor 110.

The wireless communication module 160 may provide solutions for wireless communication applied to the UE100, including Wireless Local Area Networks (WLANs) (e.g., wireless fidelity (Wi-Fi) networks), Bluetooth (BT), Global Navigation Satellite System (GNSS), Frequency Modulation (FM), Near Field Communication (NFC), Infrared (IR), and the like. The wireless communication module 160 may be one or more devices integrating at least one communication processing module. The wireless communication module 160 receives electromagnetic waves via the antenna 2, performs frequency modulation and filtering processing on electromagnetic wave signals, and transmits the processed signals to the processor 110. The wireless communication module 160 may also receive a signal to be transmitted from the processor 110, perform frequency modulation and amplification on the signal, and convert the signal into electromagnetic waves through the antenna 2 to radiate the electromagnetic waves.

In some embodiments, antenna 1 of UE100 is coupled to mobile communication module 150 and antenna 2 is coupled to wireless communication module 160 so that UE100 can communicate with networks and other devices via wireless communication techniques. The wireless communication technology may include global system for mobile communications (GSM), General Packet Radio Service (GPRS), code division multiple access (code division multiple access, CDMA), Wideband Code Division Multiple Access (WCDMA), time-division code division multiple access (time-division code division multiple access, TD-SCDMA), Long Term Evolution (LTE), LTE, BT, GNSS, WLAN, NFC, FM, and/or IR technologies, etc. The GNSS may include a Global Positioning System (GPS), a global navigation satellite system (GLONASS), a beidou navigation satellite system (BDS), a quasi-zenith satellite system (QZSS), and/or a Satellite Based Augmentation System (SBAS).

The UE100 implements display functions via the GPU, the display screen 194, and the application processor. The GPU is a microprocessor for image processing, and is connected to the display screen 194 and an application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor 110 may include one or more GPUs that execute program instructions to generate or alter display information.

The display screen 194 is used to display images, video, and the like. The display screen 194 includes a display panel. The display panel may adopt a Liquid Crystal Display (LCD), an organic light-emitting diode (OLED), an active-matrix organic light-emitting diode (active-matrix organic light-emitting diode, AMOLED), a flexible light-emitting diode (FLED), a miniature, a Micro-oeld, a quantum dot light-emitting diode (QLED), and the like. In some embodiments, the UE100 may include 1 or N display screens 194, with N being a positive integer greater than 1.

The UE100 may implement a photographing function through the ISP, the camera 193, the video codec, the GPU, the display screen 194, and the application processor, etc.

The ISP is used to process the data fed back by the camera 193. For example, when a photo is taken, the shutter is opened, light is transmitted to the camera photosensitive element through the lens, the optical signal is converted into an electrical signal, and the camera photosensitive element transmits the electrical signal to the ISP for processing and converting into an image visible to naked eyes. The ISP can also carry out algorithm optimization on the noise, brightness and skin color of the image. The ISP can also optimize parameters such as exposure, color temperature and the like of a shooting scene. In some embodiments, the ISP may be provided in camera 193.

The camera 193 is used to capture still images or video. The object generates an optical image through the lens and projects the optical image to the photosensitive element. The photosensitive element may be a Charge Coupled Device (CCD) or a complementary metal-oxide-semiconductor (CMOS) phototransistor. The light sensing element converts the optical signal into an electrical signal, which is then passed to the ISP where it is converted into a digital image signal. And the ISP outputs the digital image signal to the DSP for processing. The DSP converts the digital image signal into image signal in standard RGB, YUV and other formats. In some embodiments, the UE100 may include 1 or N cameras 193, N being a positive integer greater than 1.

The digital signal processor is used for processing digital signals, and can process digital image signals and other digital signals. For example, when the UE100 selects a frequency bin, the digital signal processor is used to perform fourier transform or the like on the frequency bin energy.

Video codecs are used to compress or decompress digital video. The UE100 may support one or more video codecs. As such, the UE100 may play or record video in a variety of encoding formats, such as: moving Picture Experts Group (MPEG) 1, MPEG2, MPEG3, MPEG4, and the like.

The NPU is a neural-network (NN) computing processor that processes input information quickly by using a biological neural network structure, for example, by using a transfer mode between neurons of a human brain, and can also learn by itself continuously. The NPU can implement applications such as intelligent cognition of the UE100, for example: image recognition, face recognition, speech recognition, text understanding, and the like.

The external memory interface 120 may be used to connect an external memory card, such as a Micro SD card, to extend the storage capability of the UE 100. The external memory card communicates with the processor 110 through the external memory interface 120 to implement a data storage function. For example, files such as music, video, etc. are saved in an external memory card.

The internal memory 121 may be used to store computer-executable program code, which includes instructions. The internal memory 121 may include a program storage area and a data storage area. The storage program area may store an operating system, an application program (such as a sound playing function, an image playing function, etc.) required by at least one function, and the like. The storage data area may store data (e.g., audio data, a phonebook, etc.) created during use of the UE100, and the like. In addition, the internal memory 121 may include a high-speed random access memory, and may further include a nonvolatile memory, such as at least one magnetic disk storage device, a flash memory device, a universal flash memory (UFS), and the like. The processor 110 performs various functional applications of the UE100 and data processing by executing instructions stored in the internal memory 121 and/or instructions stored in a memory provided in the processor.

The UE100 may implement audio functions through the audio module 170, the speaker 170A, the receiver 170B, the microphone 170C, the earphone interface 170D, and the application processor. Such as music playing, recording, etc.

The audio module 170 is used to convert digital audio information into an analog audio signal output and also to convert an analog audio input into a digital audio signal. The audio module 170 may also be used to encode and decode audio signals. In some embodiments, the audio module 170 may be disposed in the processor 110, or some functional modules of the audio module 170 may be disposed in the processor 110.

The speaker 170A, also called a "horn", is used to convert the audio electrical signal into an acoustic signal. The UE100 can listen to music through the speaker 170A or listen to a hands-free call.

The receiver 170B, also called "earpiece", is used to convert the electrical audio signal into an acoustic signal. When the UE100 answers a call or voice information, it can answer voice by bringing the receiver 170B close to the human ear.

The microphone 170C, also referred to as a "microphone," is used to convert sound signals into electrical signals. When making a call or transmitting voice information, the user can input a voice signal to the microphone 170C by speaking the user's mouth near the microphone 170C. The UE100 may be provided with at least one microphone 170C. In other embodiments, the UE100 may be provided with two microphones 170C to achieve noise reduction functions in addition to collecting sound signals. In other embodiments, the UE100 may further include three, four or more microphones 170C to collect sound signals, reduce noise, identify sound sources, perform directional recording, and so on.

The headphone interface 170D is used to connect a wired headphone. The headset interface 170D may be the USB interface 130, or may be a 3.5mm open mobile electronic device platform (OMTP) standard interface, a cellular telecommunications industry association (cellular telecommunications industry association of the USA, CTIA) standard interface.

The keys 190 include a power-on key, a volume key, and the like. The keys 190 may be mechanical keys. Or may be touch keys. The UE100 may receive a key input, and generate a key signal input related to user setting and function control of the UE 100.

The motor 191 may generate a vibration cue. The motor 191 may be used for incoming call vibration cues, as well as for touch vibration feedback. For example, touch operations applied to different applications (e.g., photographing, audio playing, etc.) may correspond to different vibration feedback effects. The motor 191 may also respond to different vibration feedback effects for touch operations applied to different areas of the display screen 194. Different application scenes (such as time reminding, receiving information, alarm clock, game and the like) can also correspond to different vibration feedback effects. The touch vibration feedback effect may also support customization.

Indicator 192 may be an indicator light that may be used to indicate a state of charge, a change in charge, or a message, missed call, notification, etc.

The SIM card interface 195 is used to connect a SIM card. The SIM card can be brought into and out of contact with the UE100 by being inserted into the SIM card interface 195 or being pulled out of the SIM card interface 195. The UE100 may support 1 or N SIM card interfaces, N being a positive integer greater than 1. The SIM card interface 195 may support a Nano SIM card, a Micro SIM card, a SIM card, etc. The same SIM card interface 195 can be inserted with multiple cards at the same time. The types of the plurality of cards may be the same or different. The SIM card interface 195 may also be compatible with different types of SIM cards. The SIM card interface 195 may also be compatible with external memory cards. The UE100 interacts with the network through the SIM card to implement functions such as communication and data communication. In some embodiments, the UE100 employs eSIM, namely: an embedded SIM card. The eSIM card may be embedded in the UE100 and cannot be separated from the UE 100.

An embodiment of the present application provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions enable the computer to execute a method for sending downlink control information provided in the embodiment shown in fig. 1 of the present application.

An embodiment of the present application provides a non-transitory computer-readable storage medium, where the non-transitory computer-readable storage medium stores computer instructions, and the computer instructions enable the computer to execute the method for receiving downlink control information provided in the embodiment shown in fig. 2 of the present application.

The non-transitory computer readable storage medium described above may take any combination of one or more computer readable media. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a Read Only Memory (ROM), an Erasable Programmable Read Only Memory (EPROM) or flash memory, an optical fiber, a portable compact disc read only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, Radio Frequency (RF), etc., or any suitable combination of the foregoing.

Computer program code for carrying out operations for aspects of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).

In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this application, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this application can be combined and combined by those skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.

The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination" or "in response to a detection", depending on the context. Similarly, the phrases "if determined" or "if detected (a stated condition or event)" may be interpreted as "when determined" or "in response to a determination" or "when detected (a stated condition or event)" or "in response to a detection (a stated condition or event)", depending on the context.

It should be noted that the terminal referred to in the embodiments of the present application may include, but is not limited to, a Personal Computer (PC), a Personal Digital Assistant (PDA), a wireless handheld device, a tablet computer (tablet computer), a mobile phone, an MP3 player, an MP4 player, and the like.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions in actual implementation, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A method for sending downlink control information is applied to a base station, and is characterized in that the method comprises the following steps:

when the base station finds that the user equipment is in uplink out-of-step in a connection state, determining that a Downlink Control Information (DCI) format used for DCI transmission is format1_ 1;

sending DCI with format1_1 on a user equipment specific search space corresponding to format1_1, where the DCI includes a physical downlink control channel signaling, and the physical downlink control channel signaling is used to indicate that user equipment has uplink out-of-synchronization.

2. The method of claim 1, wherein the DCI sent in format1_1 includes a frequency domain resource allocation field; the DCI including the physical downlink control channel signaling comprises:

and when the value of the frequency domain resource allocation field is a preset value, the signaling carried by the frequency domain resource allocation field is the physical downlink control channel signaling.

3. The method according to claim 1 or 2, wherein the DCI transmitted in format1_1 further comprises: a modulation and coding strategy field, a new data indication field, a redundancy version field, a hybrid automatic repeat request process number field, a power control command field for scheduling a physical uplink control channel, a physical uplink control channel resource indication field and an uplink sounding reference signal request field of the transport block 1.

4. A method for receiving downlink control information is applied to user equipment, and is characterized in that the method comprises the following steps:

demodulating a Physical Downlink Control Channel (PDCCH) in a user equipment specific search space corresponding to a format1_1 to obtain a Downlink Control Information (DCI) in a format1_ 1;

obtaining a physical downlink control channel signaling from the DCI in the format1_ 1;

and sending a random access channel according to the physical downlink control channel signaling.

5. The method of claim 4, wherein the obtaining physical downlink control channel signaling from the DCI in the format1_1 format comprises:

analyzing the DCI in the format1_1 to obtain a frequency domain resource allocation field in the DCI;

and when the value of the frequency domain resource allocation field is a preset value, determining the signaling carried by the frequency domain resource allocation field as the physical downlink control channel signaling.

6. An apparatus for transmitting downlink control information, the apparatus being provided in a base station, the apparatus comprising:

a determining module, configured to determine, when the base station finds that the user equipment is in the uplink out-of-step in the connection state, that a DCI format used for DCI transmission of downlink control information is format1_ 1;

a sending module, configured to send DCI with format1_1 in a user equipment specific search space corresponding to format1_1, where the DCI includes a physical downlink control channel signaling, and the physical downlink control channel signaling is used to indicate that user equipment has uplink out-of-synchronization.

7. The apparatus of claim 6, wherein the DCI sent by the sending module in format1_1 includes a frequency domain resource allocation field; the DCI including the physical downlink control channel signaling comprises: and when the value of the frequency domain resource allocation field is a preset value, the signaling carried by the frequency domain resource allocation field is the physical downlink control channel signaling.

8. A device for receiving downlink control information, configured in a user equipment, the device comprising:

a demodulation module, configured to demodulate a physical downlink control channel in a user equipment specific search space corresponding to format1_1, to obtain DCI of format1_ 1;

an obtaining module, configured to obtain a physical downlink control channel signaling from the DCI in format1_1 obtained by the demodulating module;

and a sending module, configured to send a random access channel according to the physical downlink control channel signaling obtained by the obtaining module.

9. The apparatus of claim 8,

the obtaining module is specifically configured to parse the DCI in the format1_1 to obtain a frequency domain resource allocation field in the DCI; and when the value of the frequency domain resource allocation field is a preset value, determining the signaling carried by the frequency domain resource allocation field as the physical downlink control channel signaling.

10. A base station, comprising:

at least one processor; and

at least one memory communicatively coupled to the processor, wherein:

the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 1 to 3.

11. A non-transitory computer-readable storage medium storing computer instructions that cause the computer to perform the method of any of claims 1-3.

12. A user equipment, comprising:

at least one processor; and

at least one memory communicatively coupled to the processor, wherein:

the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the method of any of claims 4 to 5.

13. A non-transitory computer readable storage medium storing computer instructions that cause the computer to perform the method of any of claims 4 to 5.