WO2021031026A1 - Procédé et appareil de transmission d'informations de commande en liaison descendante (dci) - Google Patents

Procédé et appareil de transmission d'informations de commande en liaison descendante (dci) Download PDF

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Publication number
WO2021031026A1
WO2021031026A1 PCT/CN2019/101202 CN2019101202W WO2021031026A1 WO 2021031026 A1 WO2021031026 A1 WO 2021031026A1 CN 2019101202 W CN2019101202 W CN 2019101202W WO 2021031026 A1 WO2021031026 A1 WO 2021031026A1
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Prior art keywords
dci
information
dci format
terminal device
activation period
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PCT/CN2019/101202
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English (en)
Chinese (zh)
Inventor
侯海龙
李超君
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华为技术有限公司
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Priority to PCT/CN2019/101202 priority Critical patent/WO2021031026A1/fr
Priority to CN201980098446.3A priority patent/CN114128373A/zh
Publication of WO2021031026A1 publication Critical patent/WO2021031026A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This application relates to the field of wireless communication technologies, and in particular to a method and device for transmitting downlink control information DCI.
  • a wake-up signal (WUS) or energy-saving signal/channel may be introduced in the new radio (NR) system of the 5th generation (5G) mobile communication technology (5G).
  • power saving signal/channel WUS can be combined with the discontinuous reception (DRX) mechanism in the radio resource control (radio resource control, RRC) connection state.
  • DRX discontinuous reception
  • RRC radio resource control
  • WUS can also be designed as a PDCCH for a group of terminal devices (UE group).
  • the network device can configure a group of terminal devices to detect the same Group PDCCH, and the Group PDCCH carries the Group DCI, which is used to indicate the corresponding energy saving information of each terminal device in the group (for example, whether to "wake up").
  • IoT Internet of Things
  • different types of terminal devices such as video surveillance cameras, industrial sensors, and so on.
  • These different types of terminals have different services and power characteristics, and can be configured with different power saving functions.
  • Different power saving functions mean that different length bits in the DCI are needed to indicate.
  • multiple power saving functions can be indicated in WUS, and the lengths of group DCI sent by network equipment to mMTC terminal equipment are all the same. If a certain type of terminal equipment is only configured with partial power saving functions, the DCI will be There will be more waste of resources.
  • the embodiments of the present application provide a method and device for transmitting downlink control information DCI, which are used to provide different DCI formats for different types of terminal devices, thereby enhancing the flexibility of energy-saving signal transmission and reducing resource loss.
  • an embodiment of the present application provides a DCI transmission method, which can be applied to a network device, and the method includes: the network device sends first DCI format information to a first terminal device, and the first DCI format information is included in The first DCI format set includes N pieces of DCI format information, and the N pieces of DCI format information respectively correspond to the data transmission functions of N different terminal devices, and N is a positive integer; the network device according to the first The DCI format information sends the first DCI to the first terminal device.
  • the network device can send the first DCI to the first terminal device according to the first DCI format information in the first DCI format set. Since the first DCI set may include one or more DCI format information, each DCI format information corresponds to a data transmission function of a terminal device. Therefore, when the network device sends the first DCI, it can be based on the data transmission function of the terminal device. For the data transmission function supported, the appropriate DCI format is selected for transmission, thereby effectively reducing the resource overhead in the DCI transmission process and improving the flexibility of energy-saving signal transmission.
  • the data transmission function includes one or more of the following: whether to wake up during the discontinuous reception DRX active period, and whether to configure the channel state before the DRX active period Information CSI measurement and reporting function, bandwidth part BWP switching scheme, configuration scheme of the number of receiving antennas in the DRX active period, cross-subframe scheduling scheme in the DRX active period, and physical downlink control channel skipping PDCCH skipping scheme in the DRX active period.
  • the first DCI includes M information blocks, and M is a positive integer;
  • the first DCI format information includes information indicating one or more of the following Indication information: the index of the information block corresponding to the first terminal device in the M information blocks; or, the length of the first DCI; or, the length of the information block.
  • the network device may also send to the first terminal device information indicating the first wireless network temporary identifier RNTI, where the first RNTI is used for the first terminal device Receive the first DCI, where the first RNTI corresponds to the first DCI format information. That is, different DCI formats can correspond to different RNTIs.
  • the time domain position at which the network device sends the first DCI is in the inactive period of the DRX, and the network device may also send to the first terminal device Information used to indicate the timing advance of the time domain position of the first DCI relative to the next DRX active period.
  • the network device may send one or more of the following information through a radio resource control RRC message: first DCI format information, information used to indicate the first RNTI , Information used to indicate the timing advance of the time domain position of the first DCI relative to the next DRX activation period. This facilitates the terminal device to receive the first DCI.
  • an embodiment of the present application provides a DCI transmission method, which can be applied to a terminal device.
  • the method includes: a first terminal device receives first DCI format information from a network device, and the first DCI format information is included in A first DCI format set, the first DCI format set includes N pieces of DCI format information, and the N pieces of DCI format information respectively correspond to the data transmission functions of N different terminal devices, where N is a positive integer; the first terminal device is based on The first DCI format information receives the first DCI from the network device.
  • the first terminal device may receive the first DCI sent by the network device according to the first DCI format information in the first DCI format set. Since the first DCI set may include one or more DCI format information, each DCI format information corresponds to a data transmission function of a terminal device. Therefore, when the network device sends the first DCI, it can be based on the data transmission function of the terminal device. For the data transmission function supported, the appropriate DCI format is selected for transmission, thereby effectively reducing the resource overhead in the DCI transmission process and improving the flexibility of energy-saving signal transmission.
  • the data transmission function includes one or more of the following: whether to wake up during the discontinuous reception DRX activation period, and whether to configure channel state information before the activation period CSI measurement and reporting function, bandwidth part BWP switching scheme, configuration scheme of the number of receiving antennas in the DRX active period, cross-subframe scheduling scheme in the DRX active period, and physical downlink control channel skipping PDCCH skipping scheme in the DRX active period.
  • the first DCI includes M information blocks, where M is a positive integer; the first DCI format information includes indication information for indicating one or more of the following : Index of the information block corresponding to the first terminal device in the M information blocks; or, the length of the first DCI; or, the length of the information block.
  • the second terminal device can determine its own corresponding information block from the M information blocks included in the first DCI according to the content indicated in the first DCI format information, thereby obtaining energy saving information.
  • the first terminal device may also receive from the network device information for indicating the first wireless network temporary identification RNTI, where the first RNTI and the first DCI format information Corresponding, that is, different DCI formats can correspond to different RNTIs; the first terminal device receives the first DCI according to the first RNTI.
  • the time domain position at which the first terminal device receives the first DCI is in the inactive period of DRX, and the first terminal device may also receive instructions from the network device for the first DCI The time-domain position of a DCI relative to the time advance information of the next DRX active period.
  • the first terminal device may also receive one or more of the following information through a radio resource control RRC message: first DCI format information, used to indicate the first RNTI information, information used to indicate the timing advance of the time domain position of the first DCI relative to the next DRX activation period. This facilitates the terminal device to receive the first DCI.
  • an embodiment of the present application provides a communication device that has the function of implementing the terminal device in the first aspect or any one of the possible designs of the first aspect.
  • the communication device may be a terminal device, such as a handheld device. Terminal equipment, vehicle-mounted terminal equipment, etc., may also be a device included in the terminal device, such as a chip, or a device including the terminal device.
  • the functions of the above-mentioned terminal device may be realized by hardware, or may be realized by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the communication device may also have the function of realizing the second aspect or the network device in any possible design of the second aspect.
  • the communication device may be a network device, such as a base station, or a device included in the network device, such as a chip.
  • the functions of the above-mentioned network equipment may be realized by hardware, or may be realized by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above-mentioned functions.
  • the structure of the communication device includes a processing module and a transceiver module, wherein the processing module is configured to support the communication device to perform the corresponding function in the first aspect or any one of the first aspects. , Or perform the corresponding function in the second aspect or any one of the second aspects mentioned above.
  • the transceiver module is used to support communication between the communication device and other communication devices. For example, when the communication device is a network device, it can send the first DCI format information to the first terminal device.
  • the communication device may also include a storage module, which is coupled with the processing module, which stores program instructions and data necessary for the communication device.
  • the processing module may be a processor
  • the communication module may be a transceiver
  • the storage module may be a memory.
  • the memory may be integrated with the processor or may be provided separately from the processor, which is not limited in this application.
  • the structure of the communication device includes a processor, and may also include a memory.
  • the processor is coupled with the memory and can be used to execute computer program instructions stored in the memory, so that the communication device executes the first aspect described above. Or any one of the possible design methods of the first aspect, or implement any one of the foregoing second aspect or the second aspect of the possible design methods.
  • the communication device further includes a communication interface, and the processor is coupled with the communication interface.
  • the communication interface may be a transceiver or an input/output interface; when the communication device is a chip included in the terminal device, the communication interface may be an input/output interface of the chip.
  • the transceiver may be a transceiver circuit, and the input/output interface may be an input/output circuit.
  • an embodiment of the present application provides a chip system, including: a processor, the processor is coupled with a memory, the memory is used to store a program or an instruction, when the program or an instruction is executed by the processor , So that the chip system implements any possible design method of the foregoing first aspect, or implements any possible design method of the foregoing second aspect.
  • the chip system further includes an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • processors in the chip system there may be one or more processors in the chip system.
  • the processor can be implemented by hardware or software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor can be a general-purpose processor, implemented by reading software codes stored in the memory.
  • the memory may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application.
  • the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be set on different chips.
  • the setting method of the processor is not specifically limited.
  • an embodiment of the present application provides a computer-readable storage medium, which stores computer-readable instructions.
  • the computer reads and executes the computer-readable instructions, the computer is caused to execute the first
  • the method in any possible design of the aspect, or the method in any possible design of the second aspect described above.
  • the embodiments of the present application provide a computer program product.
  • the computer reads and executes the computer program product, the computer executes any of the possible design methods in the first aspect, or executes the first Any of the two possible design methods.
  • an embodiment of the present application provides a communication system, which includes the network device and at least one terminal device described in the foregoing aspects.
  • FIG. 1 is a schematic diagram of a network architecture of a communication system to which an embodiment of this application is applicable;
  • FIG. 2 is a schematic flowchart of a DCI transmission method provided by an embodiment of the application
  • FIG. 3 is a schematic diagram of a DCI format provided by an embodiment of this application.
  • FIG. 4 is a schematic diagram of another process of a DCI transmission method provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of multiple DCI formats in the first DCI format set provided by an embodiment of the application
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of this application.
  • FIG. 7 is another schematic structural diagram of a communication device provided by an embodiment of the application.
  • FIG. 8 is a schematic structural diagram of another communication device provided by an embodiment of this application.
  • FIG. 9 is a schematic diagram of another structure of another communication device provided by an embodiment of this application.
  • GSM global system for mobile communications
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • LTE frequency division duplex FDD
  • TDD LTE Time division duplex
  • UMTS universal mobile telecommunication system
  • WIMAX worldwide interoperability for microwave access
  • 5G fifth generation
  • NR new radio
  • FIG. 1 is a schematic diagram of a network architecture of a communication system to which an embodiment of this application is applicable.
  • the communication system includes a network device 110, a terminal device 101, a terminal device 102, a terminal device 103, a terminal device 104, a terminal device 105, and a terminal device 106.
  • the network device can communicate with at least one terminal device (such as the terminal device 101) through uplink (UL) and downlink (DL).
  • UL uplink
  • DL downlink
  • the network device in FIG. 1 may be an access network device, such as a base station.
  • the access network device in different systems corresponding to different devices for example, in the fourth generation mobile communication technology (the 4 th generation, 4G) system, the eNB may correspond, a corresponding access network device 5G 5G in the system, For example, gNB.
  • the technical solutions provided by the embodiments of the present application can also be applied to future mobile communication systems, so the network equipment in FIG. 1 can also correspond to the access network equipment in the future mobile communication system.
  • each network device may provide services for multiple terminal devices.
  • the embodiment of the present application does not limit the number of network devices and terminal devices in the communication system.
  • the network device in FIG. 1 and each of the terminal devices or all of the terminal devices among multiple terminal devices can implement the technical solutions provided in the embodiments of the present application.
  • the terminal devices in FIG. 1 may be different types of terminal devices, for example, they may include mMTC terminal devices such as mobile phones, smart water meters in the Internet of Things, and electricity meters.
  • mMTC terminal devices such as mobile phones, smart water meters in the Internet of Things, and electricity meters.
  • the various types of terminal devices shown in FIG. are some examples, and it should be understood that the terminal device in the embodiment of the present application is not limited to this.
  • Terminal equipment also known as user equipment (UE), mobile station (MS), mobile terminal (MT), etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • the terminal device may communicate with the core network via a radio access network (RAN), and exchange voice and/or data with the RAN.
  • RAN radio access network
  • the terminal device may be a handheld device with a wireless connection function, a vehicle-mounted device, a vehicle user device, and so on.
  • terminal devices are: mobile phones (mobile phones), tablets, laptops, palmtop computers, mobile internet devices (MID), wearable devices, virtual reality (VR) devices, augmented Augmented reality (AR) equipment, wireless terminals in industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, and smart grid (smart grid)
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • Use such as various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
  • the terminal device in the embodiments of the present application may also be a vehicle-mounted module, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip, or vehicle-mounted unit that is built into a vehicle as one or more components or units.
  • Modules, on-board components, on-board chips or on-board units can implement the method of the present application.
  • Network equipment is the equipment used in the network to connect terminal equipment to the wireless network.
  • the network device may be a node in a radio access network, may also be called a base station, or may also be called a radio access network (RAN) node (or device).
  • the network device can be used to convert received air frames and Internet Protocol (IP) packets into each other, and act as a router between the terminal device and the rest of the access network, where the rest of the access network may include an IP network.
  • IP Internet Protocol
  • the network equipment can also coordinate the attribute management of the air interface.
  • the network equipment may include an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (LTE) system or an evolved LTE system (LTE-Advanced, LTE-A), such as
  • LTE long term evolution
  • LTE-A evolved LTE system
  • the traditional macro base station eNB and the micro base station eNB in the heterogeneous network scenario may also include the next generation node B (next generation) in the fifth generation mobile communication technology (5th generation, 5G) new radio (NR) system.
  • 5th generation, 5G fifth generation mobile communication technology
  • NR new radio
  • node B node B, gNB
  • TRP transmission reception point
  • home base station for example, home evolved NodeB, or home Node B, HNB
  • baseband unit BBU
  • baseband pool BBU pool or WiFi access point (access point, AP), etc.
  • CU centralized unit
  • CU distributed unit
  • DU cloud radio access network
  • a network device in a V2X technology is a roadside unit (RSU).
  • the RSU may be a fixed infrastructure entity that supports V2X applications, and can exchange messages with other entities that support V2X applications.
  • Downlink control channel such as PDCCH, or enhanced physical downlink control channel (EPDCCH), or may also include other downlink control channels. There are no specific restrictions.
  • the terms “system” and “network” in the embodiments of this application can be used interchangeably.
  • “Multiple” refers to two or more. In view of this, “multiple” may also be understood as “at least two” in the embodiments of the present application.
  • “At least one” can be understood as one or more, for example, one, two or more. For example, including at least one means including one, two or more, and it does not limit which ones are included. For example, if at least one of A, B, and C is included, then A, B, C, A and B, A and C, B and C, or A and B and C are included. In the same way, the understanding of "at least one" and other descriptions is similar.
  • FIG. 2 is a schematic flowchart of a method for transmitting downlink control information DCI according to an embodiment of this application.
  • the method specifically includes the following steps S201 to S204.
  • Step S201 The network device sends first DCI format information to the first terminal device, where the first DCI format information is used to indicate the first DCI format.
  • a DCI may include multiple information blocks with the same length, and each information block contains energy saving information of a corresponding terminal device.
  • the last information block in the information block stores a radio network temporary indication (RNTI) that scrambles the DCI.
  • RNTI can be used to indicate the PDCCH group where the terminal device is located, so that the terminal device can recognize and receive the DCI.
  • the RNTI may be, for example, power saving (PS)-RNTI.
  • PS power saving
  • the terminal devices corresponding to multiple information blocks in a DCI can be different. In this way, multiple terminal devices can multiplex the same DCI to obtain energy-saving information, thereby helping to reduce resource consumption on the network side and improve energy-saving signals. s efficiency. Further, for each information block in the multiple information blocks, the terminal device corresponding to the information block may also be one or more, that is, multiple terminal devices may also multiplex one information block in the DCI to indicate These terminal devices have the same energy saving information.
  • Step S202 The first terminal device receives the first DCI format information from the network device.
  • Step S203 The network device sends the first DCI to the first terminal device according to the first DCI format information.
  • the network device sending the first DCI to the first terminal device according to the first DCI format information may be that the network device sends the first DCI to the first terminal device in the first DCI format indicated by the first DCI format information. Since the first DCI sent by the network device adopts the first DCI format, in step S201, the network device needs to send first DCI format information indicating the first DCI format to the first terminal device so that the terminal device can follow the The first DCI format acquires energy saving information. It can be understood that the network device may send the first DCI format information to the first terminal device before sending the first DCI.
  • the first DCI format information may include information used to indicate that the information blocks corresponding to the first terminal device are in M information blocks. Information about one or more of the index in the information block, the length of the first DCI, and the length of each information block in the M information blocks.
  • the DCI may be a group DCI. Therefore, the network device sending the first DCI to the first terminal device according to the first DCI format information may also be that the network device may send the first DCI to a group of terminal devices, and the first terminal device is one of the group of terminal devices.
  • Step S204 The first terminal device receives the first DCI from the network device according to the first DCI format information.
  • the first terminal device may use the length of the first DCI indicated in the first DCI indication information, the length of each information block in the first DCI, and the number of information blocks included in the first DCI M , The index in the M information blocks of the information block corresponding to the first terminal device determines the information block corresponding to the first terminal device, and then obtains energy saving information from the information block.
  • the network device may also send information for indicating the first RNTI to the first terminal device.
  • the network device When the network device sends the first DCI, it will use the first RNTI to scramble the first DCI.
  • the first RNTI corresponds to the first DCI format adopted by the first DCI, and can be used by the first terminal device to identify the PDCCH group in which it is located. That is, the first terminal device may detect the DCI according to the first RNTI, and determine whether there is an information block containing its own energy saving information in a certain DCI according to whether the first RNTI can descramble the DCI.
  • the first RNTI may be PS-RNTI.
  • the network device can specifically send the first DCI through the PDCCH channel, and the time domain position for the network device to send the first DCI can be in the active period of DRX or in the inactive period of DRX. If the time domain position of sending the first DCI is in During the inactive period of DRX, the network device may further send to the first terminal device information indicating the timing advance of the time domain position of the first DCI relative to the next DRX active period.
  • the network device may send the above information including the first DCI format information, the information used to indicate the first RNTI, and the time domain position of the first DCI relative to the next DRX activation to the first terminal device through an RRC message.
  • the information may be included in the same RRC message and sent to the first terminal device, or may be included in different RRC messages and sent to the first terminal device, which is not limited in this application.
  • the network device may send an RRC message to the first terminal device.
  • the RRC message includes the first DCI format information and is used to indicate the first DCI format.
  • the first DCI format information is included in the first DCI format set.
  • the first DCI format set includes N pieces of DCI format information.
  • the N pieces of DCI format information are different from each other. They are used to indicate different DCI formats and correspond to the data transmission functions of N different terminal devices. N is a positive integer.
  • the first DCI format information refers to one of the N DCI format information.
  • the DCI format information is used to indicate the DCI format, the N pieces of DCI format information are different from each other, which means that the DCI formats indicated by the N pieces of DCI format information are different.
  • Each DCI format can be used to support a data transmission function of a terminal device, and different DCI formats support different data transmission functions of the terminal device.
  • the different DCI formats may include, the length of the DCI, the length of each information block in the DCI, the type of energy saving information included in each information block in the DCI, the RNTI used to scramble the DCI, and the supported data transmission function One or more of the items are different. In other words, if the two DCI formats are in the length of DCI, the length of each information block in DCI, the type of energy saving information included in each information block in DCI, the RNTI used to scramble the DCI, and the supported data If there is at least one difference in transmission function, etc., it can be considered that the two DCI formats are different DCI formats.
  • CSI channel state information
  • BWP bandwidth part
  • the data transmission function of the terminal device can also be understood as a combination of power saving solutions adopted by the terminal device.
  • whether to wake up during the non-continuous reception DRX activation period can be understood as a wake-up function of the terminal device.
  • wake up is the basic function of WUS, and all types of terminals should support it.
  • WUS is generally sent at a certain moment before the DRX activation period, that is, WUS is sent during the DRX inactive period, and is used to indicate whether the terminal device wakes up in the subsequent DRX activation period to monitor PDCCH and other service behaviors.
  • the wake-up function can displayly indicate whether the terminal device activates and monitors the PDCCH during the activation period or enters the sleep state through the 1-bit information in the DCI. For example, when the value of this bit is "1", it indicates that PDCCH monitoring is activated, and the value of this bit is "0", which indicates that it enters the sleep state.
  • the channel state information CSI measurement and reporting function is configured before the DRX activation period can be understood as the CSI measurement and reporting of the terminal device. Since the terminal device sleeps for a long time before entering the active period, the terminal device does not perform CSI measurement during the sleep period. CSI measurement uses include channel quality measurement, beam management, channel phase tracking, etc. For some mobile terminal devices, after a long period of sleep, network devices and terminal devices may have inaccurate estimates of the current channel quality and beam mismatch. Therefore, they can instruct such terminal devices when waking up. Perform CSI measurement and report. The terminal device can be notified through the 1-bit information display in the DCI.
  • the CSI measurement and reporting function is an optional configuration for the terminal equipment. The CSI measurement and reporting function can be configured for some terminal equipment, and only the terminal equipment configured with this function has the indication information of the function in the DCI.
  • BWP switch is the BWP switch function.
  • BWP is the bandwidth resource for the terminal device to work.
  • Each terminal device can be configured with up to 4 BWPs. Only one BWP is activated at a time. The terminal device performs service transmission and RRM measurement on the activated BWP, and selects the appropriate size according to the data to be transmitted The BWP is used to reduce power consumption. For different business models, the arrival time and size of data packets are different, so for a certain activation moment, the current amount of data to be transmitted is different, so when the terminal device is instructed to wake up, the currently activated BWP can be adjusted at the same time, and the BWP switch can be performed . This function is more effective for burst service models.
  • the 2-bit information in the DCI can be used to indicate switching among the configured 4 BWPs. For terminal equipment with a relatively stable service cycle, the BWP switching function may not be included.
  • BWP The switching function is an optional configuration for the terminal device.
  • FIG. 5 exemplarily shows multiple pieces of DCI format information in the first DCI format set provided by an embodiment of the present application.
  • the first DCI format set includes 4 pieces of DCI format information, where DCI format 1 Supported data transmission functions include wake-up, DCI format 2 supports data transmission functions including wake-up and CSI measurement and reporting, DCI format 3 supports data transmission functions including wake-up and BWP switching, and DCI format 4 supports data transmission functions including wake-up and BWP Handover and CSI measurement and reporting.
  • DCI format 1 Supported data transmission functions include wake-up
  • DCI format 2 supports data transmission functions including wake-up and CSI measurement and reporting
  • DCI format 3 supports data transmission functions including wake-up and BWP switching
  • DCI format 4 supports data transmission functions including wake-up and BWP Handover and CSI measurement and reporting.
  • the amount of DCI format information shown in FIG. 5 is only an example, and this application does not specifically limit the amount of DCI format information in the first DCI format set, and can be set by
  • DCI formats shown in FIG. 4 in 5 DCI having different lengths, i.e. L max1, L max2, L max3 and L max4 5 shown in FIG.
  • the length of the information block in different DCI formats is also different.
  • the more power saving schemes included in the data transmission function the larger the length of the information block.
  • the four DCI formats can also be scrambled using dedicated RNTI corresponding to the DCI format.
  • the length of the DCI indicated by the N pieces of DCI format information in the first DCI format set may be the same, or the DCI length indicated by each type of DCI format information may also be configured separately, and the configured DCI length may be the same or different . Since the length of the information block is different in different DCI formats, if the length of the DCI of the N DCI formats is the same, it means that the number of terminal devices that can be accommodated in different DCI is different. The smaller the length of the information block, then More terminal equipment can be reused. However, it should also be understood that this application does not limit the length of information blocks of different DCI formats to be different. In scenarios where the data transmission functions supported by them are different, the length of information blocks in different DCI formats may also be the same.
  • the length of the DCI of the four DCI formats is 24 bits. If there are 50 terminal devices, namely terminal device ⁇ terminal device 49, divided into four groups according to the service and power characteristics of the terminal device.
  • the first group adopts DCI format 1, including terminal device 0 to terminal device 23, PS-RNTI (power saving-RNTI) is configured as OXAAAA; the second group adopts DCI format 2, including terminal equipment 24 to terminal equipment 35, and PS-RNTI is configured as OXBBBB; the third group adopts DCI format 3, including terminal equipment 36 to terminal equipment 43 , PS-RNTI is configured as OXCCCC; the fourth group adopts DCI format 4, including terminal equipment 44 to terminal equipment 49, and PS-RNTI is configured as OXDDDD.
  • PS-RNTI power saving-RNTI
  • the DCI format used by the four terminal equipment groups can be shown in Table 1. Taking the group of UE0 to UE23 as an example, the network equipment can be configured for UE0 to UE23 through RRC signaling:
  • DCI pattern pattern1-wake up
  • Block index Value range [0, 23];
  • DCI length 24bit
  • PS-RANTI OXAAAA;
  • the network device indicates whether the corresponding terminal device is to wake up in the corresponding block index in the DCI according to the high-level configuration, and scrambles the CRC check bit of the DCI with PS-RANTI OXAAAA.
  • the terminal device monitors the PDCCH scrambled with PS-RNTI OXAAAA. If it successfully detects the PDCCH grouped by the terminal device, it reads the wake-up indication in the block index according to the configuration. If it is instructed to wake up, it wakes up in the subsequent DRX activation period and monitor PDCCH; if it is instructed not to wake up, it will not wake up in the subsequent DRX activation period and continue to enter the DRX off state.
  • FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the application.
  • the communication device 600 includes a transceiver module 610 and a processing module 620.
  • the communication device can be used to implement the functions related to network equipment in any of the foregoing method embodiments.
  • the communication device may be a network device or a chip included in the network device.
  • the transceiver module 610 is configured to send first DCI format information to the first terminal device, and the first DCI format information is included in the first DCI format
  • the first DCI format set includes N pieces of DCI format information, and the N pieces of DCI format information respectively correspond to the data transmission functions of N different terminal devices, and the N is a positive integer;
  • the processing module 620 is configured to A piece of DCI format information sends the first DCI to the first terminal device through the transceiver module 610.
  • the data transmission function includes one or more of the following:
  • the physical downlink control channel in the DRX activation period skips the PDCCH skipping solution.
  • the first DCI includes M information blocks, where M is a positive integer; the first DCI format information includes indication information used to indicate one or more of the following: The index of the information block in the M information blocks; or, the length of the first DCI; or, the length of the information block.
  • the transceiver module 610 is further configured to send information indicating the first wireless network temporary identifier RNTI to the first terminal device.
  • the first RNTI is used by the first terminal device to receive the first DCI.
  • An RNTI corresponds to the first DCI format information.
  • the time domain position at which the transceiver module 610 sends the first DCI is in the inactive period of DRX, and the transceiver module 610 is further configured to: send to the first terminal device the time domain indicating the first DCI Information about the timing advance of the position relative to the next DRX activation period.
  • the transceiver module 610 is further configured to send one or more of the following information through a radio resource control RRC message: first DCI format information, information used to indicate the first RNTI, The time-domain position of the DCI relative to the time advance information of the next DRX active period.
  • processing module 620 involved in the communication device may be implemented by a processor or processor-related circuit components
  • transceiver module 610 may be implemented by a transceiver or transceiver-related circuit components.
  • the operation and/or function of each module in the communication device is to realize the corresponding process of the method shown in Fig. 3 or Fig. 4, and is not repeated here for brevity.
  • FIG. 7 is a schematic diagram of another structure of a communication device provided in an embodiment of this application.
  • the communication device may specifically be a type of network equipment, such as a base station, for implementing the functions of the network equipment in any of the foregoing method embodiments.
  • the network equipment includes: one or more radio frequency units, such as remote radio unit (RRU) 701 and one or more baseband units (BBU) (also called digital unit, digital unit, DU) )702.
  • the RRU 701 may be called a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 7011 and a radio frequency unit 7012.
  • the RRU 701 part is mainly used for receiving and sending radio frequency signals and converting radio frequency signals and baseband signals.
  • the part 702 of the BBU is mainly used to perform baseband processing and control the base station.
  • the RRU 701 and the BBU 702 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 702 is the control center of the base station, which may also be called a processing unit, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU (processing unit) 702 may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the BBU 702 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network with a single access indication (such as an LTE network), or support different access standards. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 702 may also include a memory 7021 and a processor 7022, and the memory 7021 is used to store necessary instructions and data.
  • the processor 7022 is used to control the base station to perform necessary actions, for example, to control the base station to perform the sending operation in the foregoing method embodiment.
  • the memory 7021 and the processor 7022 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the embodiment of the present application also provides another communication device.
  • FIG. 8 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • the communication device 800 includes a transceiver module 810 and a processing module 820.
  • the communication device can be used to implement the functions related to terminal equipment in any of the foregoing method embodiments.
  • the communication device may be a terminal device, such as a handheld terminal device or a vehicle-mounted terminal device; the communication device may also be a chip included in the terminal device, or a device including the terminal device, such as various types of vehicles.
  • the transceiver module 810 is configured to receive first DCI format information from a network device, and the first DCI format information is included in the first DCI format set.
  • the first DCI format set includes N pieces of DCI format information, and the N pieces of DCI format information respectively correspond to the data transmission functions of N different terminal devices, and the N is a positive integer;
  • the processing module 820 is configured to follow the first DCI format The information receives the first DCI from the network device.
  • the data transmission function includes one or more of the following:
  • the first DCI includes M information blocks, where M is a positive integer; the first DCI format information includes indication information used to indicate one or more of the following: The index of the information block in the M information blocks; or, the length of the first DCI; or, the length of the information block.
  • the transceiver module 810 is further configured to receive information indicating the first wireless network temporary identifier RNTI from the network device, where the first RNTI corresponds to the first DCI format information; and according to the first RNTI, receive The first DCI.
  • the time domain position for receiving the first DCI is in the inactive period of the DRX, and the transceiver module 810 is further configured to receive from the network device indicating that the time domain position of the first DCI is relative to the next DRX. Time advance information of the activation period.
  • the transceiver module 810 is further configured to receive one or more of the following information through a radio resource control RRC message: first DCI format information, information used to indicate the first RNTI, The time-domain position of the DCI relative to the time advance information of the next DRX active period.
  • the processing module 820 involved in the communication device may be implemented by a processor or processor-related circuit components, and the transceiver module 810 may be implemented by a transceiver or transceiver-related circuit components.
  • the operations and/or functions of each module in the communication device are used to implement the corresponding process of the method shown in FIG. 3 or FIG. 4, and are not repeated here for brevity.
  • FIG. 9 is a schematic diagram of another structure of a communication device provided in an embodiment of the application.
  • the communication device may specifically be a terminal device. It is easy to understand and easy to illustrate.
  • the terminal device uses a mobile phone as an example.
  • the terminal device includes a processor, and may also include a memory. Of course, it may also include a radio frequency circuit, an antenna, and an input/output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the terminal device, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input and output devices.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • only one memory and processor are shown in FIG. 9. In actual terminal equipment products, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the antenna and radio frequency circuit with the transceiving function can be regarded as the transceiving unit of the terminal device
  • the processor with the processing function can be regarded as the processing unit of the terminal device.
  • the terminal device includes a transceiver unit 910 and a processing unit 920.
  • the transceiver unit may also be referred to as a transceiver, a transceiver, a transceiver, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiver unit 910 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiver unit 910 can be regarded as the sending unit, that is, the transceiver unit 910 includes a receiving unit and a sending unit.
  • the transceiver unit may sometimes be called a transceiver, a transceiver, or a transceiver circuit.
  • the receiving unit may sometimes be called a receiver, receiver, or receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • transceiving unit 910 is configured to perform sending and receiving operations on the terminal device side in the foregoing method embodiment
  • processing unit 920 is configured to perform other operations on the terminal device in the foregoing method embodiment except for the transceiving operation.
  • An embodiment of the present application also provides a chip system, including: a processor, the processor is coupled with a memory, the memory is used to store a program or instruction, when the program or instruction is executed by the processor, the The chip system implements the method in any of the foregoing method embodiments.
  • processors in the chip system there may be one or more processors in the chip system.
  • the processor can be implemented by hardware or software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory.
  • the memory may be integrated with the processor, or may be provided separately from the processor, which is not limited in this application.
  • the memory may be a non-transitory processor, such as a read-only memory ROM, which may be integrated with the processor on the same chip, or may be set on different chips.
  • the setting method of the processor is not specifically limited.
  • the chip system may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a system on chip (SoC). It can also be a central processor unit (CPU), a network processor (NP), a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (microcontroller).
  • the controller unit, MCU may also be a programmable controller (programmable logic device, PLD) or other integrated chips.
  • each step in the foregoing method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
  • the embodiment of the present application also provides a computer-readable storage medium, which stores computer-readable instructions, and when the computer reads and executes the computer-readable instructions, the computer is caused to execute any of the foregoing method embodiments Method in.
  • the embodiments of the present application also provide a computer program product.
  • the computer reads and executes the computer program product, the computer is caused to execute the method in any of the foregoing method embodiments.
  • the embodiments of the present application also provide a communication system, which includes a network device and at least one terminal device described in each of the foregoing method embodiments.
  • processors mentioned in the embodiments of this application may be a central processing unit (CPU), or may be other general-purpose processors, digital signal processors (DSP), or application specific integrated circuits ( application specific integrated circuit (ASIC), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electronic Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM, DR RAM
  • the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component
  • the memory storage module
  • the size of the sequence numbers of the above-mentioned processes does not mean the order of execution.
  • the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology 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 method described in each embodiment 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 disk and other media that can store program code .

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention concerne un procédé et un appareil de transmission d'informations de commande en liaison descendante (DCI). Le procédé comprend : un dispositif de réseau qui peut envoyer des premières DCI à un premier dispositif terminal en fonction de premières informations de format de DCI dans un premier ensemble de formats de DCI, le premier ensemble de formats de DCI comprenant N éléments d'informations de format de DCI, et les N éléments d'informations de format de DCI correspondant respectivement à des fonctions de transmission de données de N dispositifs terminaux différents. Du fait que le premier ensemble de DCI peut comprendre un ou plusieurs éléments d'informations de format de DCI, et chacune des informations de format de DCI correspond également à une fonction de transmission de données d'un dispositif terminal, lorsque le dispositif de réseau envoie les premières DCI, un format de DCI approprié peut être sélectionné pour l'envoi conformément à la fonction de transmission de données prise en charge par le dispositif terminal, ce qui permet de réduire efficacement le surdébit de ressources pendant l'envoi de DCI et d'améliorer la flexibilité d'envoi d'un signal d'économie d'énergie.
PCT/CN2019/101202 2019-08-16 2019-08-16 Procédé et appareil de transmission d'informations de commande en liaison descendante (dci) WO2021031026A1 (fr)

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WO2024138676A1 (fr) * 2022-12-30 2024-07-04 北京小米移动软件有限公司 Procédé et appareil de transmission ou de réception d'informations d'indication, et support de stockage lisible

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CN106982464A (zh) * 2017-04-18 2017-07-25 国家新闻出版广电总局广播科学研究院 一种下行控制信息的传输方法
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