WO2021068109A1

WO2021068109A1 - Signal sending method, signal receiving method, and apparatuses and systems thereof

Info

Publication number: WO2021068109A1
Application number: PCT/CN2019/109966
Authority: WO
Inventors: 谢信乾; 郭志恒; 龙毅
Original assignee: 华为技术有限公司
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2021-04-15
Also published as: CN113841450A

Abstract

Disclosed are a signal sending method, a signal receiving method, and apparatuses and systems thereof, wherein same relate to the technical field of communications, and are used to solve the problem of excessive energy consumption of a terminal device during frequent reception of downlink control channels. The method comprises: receiving first indication information from a network device; determining, according to the first indication information, several downlink time units used for receiving a downlink control channel in a plurality of downlink time units; and receiving the downlink control channel in the several downlink time units.

Description

Signal sending and receiving method, device and system

Technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a method, device, and system for signal sending and receiving.

Background technique

In the development and evolution process of the wireless communication system, the terminal device supports access to two network devices. This access method is called dual connectivity (DC). Operators can deploy 5G new radio interface (NR) systems and long term evolution (long term evolution, LTE) systems, and terminal equipment can be connected to the network equipment of the LTE system and the network equipment of the NR system. Since LTE is also known as evolved universal terrestrial radio access (E-UTRA), this access method is called evolved universal terrestrial radio access and new air interface dual connection ( E-UTRA NR dual connectivity, EN-DC) or new air interface and evolved universal land surface wireless access dual connectivity (NR E-UTRA dual connectivity, NE-DC).

In the EN-DC mode or the NE-DC mode, the terminal device receives a downlink control channel (physical-layer downlink control channel, PDCCH) and a downlink control signal in each downlink subframe on the LTE side. However, frequent reception will cause unnecessary energy consumption of the terminal equipment, which is not conducive to the energy saving of the terminal equipment.

Summary of the invention

The embodiments of the present application provide a signal sending and receiving method, device, and system to solve the problem of excessive energy consumption of frequently receiving downlink control channels.

In order to achieve the foregoing objectives, the embodiments of the present application provide the following technical solutions:

In a first aspect, an embodiment of the present application provides a signal receiving method. The method includes: receiving first indication information from a network device; and determining, according to the first indication information, a part of downlink time units used to receive a downlink control channel among multiple downlink time units. Time unit; the downlink control channel is received in part of the downlink time unit.

An embodiment of the present application provides a signal receiving method. A terminal device determines a part of a downlink time unit from a plurality of downlink time units according to first indication information sent by a network device, and receives a downlink control channel on the part of the downlink time unit. Compared with the prior art that the terminal device needs to receive the downlink control channel on each downlink time unit of the multiple downlink time units, the terminal device can reduce the channel reception frequency, thereby solving the problem of the terminal device frequently receiving the downlink control channel. The problem of excessive energy consumption.

In a possible implementation manner, the first indication information indicates a part of the downlink time unit, where the part of the downlink time unit includes an odd numbered downlink time unit among the plurality of downlink time units, or the part of the downlink time unit includes a plurality of downlink time units. Downstream time unit numbered as an even number in the time unit. The frequency of detecting the downlink control channel can be reduced by half by setting part of the downlink time units to the downlink time units numbered odd or even numbered among the multiple downlink time units.

In a possible implementation manner, the method further includes: receiving second indication information from the network device in the first downlink time unit, where the second indication information is used to instruct to send the uplink to the network device in the first uplink time unit. For the control channel, the first downlink time unit is one of the partial downlink time units; the second indication information is carried in the first search space, and the first uplink time unit is the uplink time unit numbered n+t1; n is the first A serial number of a downlink time unit; the second indication information is carried in the second search space, and the first uplink time unit is an uplink time unit numbered n+t2, where n, t1, and t2 are integers greater than or equal to 0. By configuring the uplink scheduling timing of the terminal equipment, it is possible to ensure sufficient uplink time units to be used. Compared with the prior art, it can reduce the energy consumption of the terminal equipment without reducing the demand of the uplink time unit.

In a possible implementation manner, the first indication information indicates at least one uplink time unit used for transmitting the uplink control channel among the multiple uplink time units, and some of the downlink time units correspond to the at least one uplink time unit. At least one uplink time unit can be determined through the first indication information, and then part of the downlink time unit can be further determined according to the at least one uplink time unit. Therefore, the uplink time unit and part of the downlink time unit can be determined through the first indication information.

In a possible implementation, part of the downlink time unit includes downlink time units numbered m-t3 among multiple downlink time units, where m is the number of at least one uplink time unit, where m is greater than or equal to t3, m, All t3 are integers greater than or equal to 0.

In a second aspect, an embodiment of the present application provides a signal sending method, including: sending first indication information to a terminal device, where the first indication information is used by the terminal device to determine a part of the downlink that is used to receive a downlink control channel among a plurality of downlink time units. Time unit: Send the downlink control channel to the terminal device in at least one downlink time unit in some downlink time units.

An embodiment of the present application provides a signal sending method. A network device sends first indication information to enable a terminal device to determine a part of a downlink time unit from a plurality of downlink time units and receive a downlink control channel on the part of the downlink time unit. Compared with the prior art that the terminal device needs to receive the downlink control channel on each downlink time unit of the multiple downlink time units, the terminal device can reduce the channel reception frequency, thereby solving the problem of the terminal device frequently receiving the downlink control channel. The problem of excessive energy consumption.

In a possible implementation manner, the first indication information indicates a part of the downlink time unit, where the part of the downlink time unit includes an odd numbered downlink time unit among the plurality of downlink time units, or the part of the downlink time unit includes a plurality of downlink time units. The downlink time unit numbered as an even number in the time unit can reduce the frequency of detecting the downlink control channel by half by setting part of the downlink time unit to the downlink time unit numbered odd or even numbered among multiple downlink time units.

In a possible implementation, the method further includes: sending second indication information to the terminal device in the first downlink time unit, and the second indication information is used to instruct the terminal device to send the uplink control in the first uplink time unit. Channel, the first downlink time unit is one of the partial downlink time units; the second indication information is carried in the first search space, and the first uplink time unit is the uplink time unit numbered n+t1; n is the first The number of the downlink time unit; the second indication information is carried in the second search space, and the first uplink time unit is an uplink time unit numbered n+t2, where n, t1, and t2 are integers greater than or equal to 0. By configuring the uplink scheduling timing of the terminal equipment, it is possible to ensure sufficient uplink time units to be used. Compared with the prior art, it can reduce the energy consumption of the terminal equipment without reducing the demand of the uplink time unit.

In a third aspect, an embodiment of the present application provides a signal receiving device, which can implement the first aspect or any possible implementation method of the first aspect, and therefore can also implement any possible implementation of the first aspect or the first aspect. The beneficial effect in the realization method. The signal receiving apparatus may be a terminal device, or a device that can support the terminal device to implement the method in the first aspect or any possible implementation manner of the first aspect, for example, a chip applied to the terminal device. The device can implement the above method by software, hardware, or by hardware executing corresponding software.

As an example, an embodiment of the present application provides a signal receiving apparatus, including: a communication unit, configured to receive first indication information from a network device; and a processing unit, configured to determine among multiple downlink time units according to the first indication information Part of the downlink time unit for receiving the downlink control channel; the communication unit is also used for receiving the downlink control channel in the part of the downlink time unit.

In a possible implementation manner, the first indication information indicates a part of the downlink time unit, where the part of the downlink time unit includes an odd numbered downlink time unit among the plurality of downlink time units, or the part of the downlink time unit includes a plurality of downlink time units. Downstream time unit numbered as an even number in the time unit.

In a possible implementation manner, the communication unit is further configured to receive second indication information from the network device in the first downlink time unit, and the second indication information is used to indicate to the network device in the first uplink time unit When sending an uplink control channel, the first downlink time unit is a time unit in some downlink time units; the second indication information is carried in the first search space, and the first uplink time unit is an uplink time unit numbered n+t1; n Is the number of the first downlink time unit; the second indication information is carried in the second search space, and the first uplink time unit is an uplink time unit numbered n+t2, where n, t1, and t2 are greater than or equal to 0 Integer.

In a possible implementation manner, the first indication information indicates at least one uplink time unit used for transmitting the uplink control channel among the multiple uplink time units, and some of the downlink time units correspond to the at least one uplink time unit.

In another example, an embodiment of the present application provides a signal receiving device. The device may include a communication unit and a processing unit. When the device is a terminal device, the communication unit may be a communication interface or an interface circuit. The processing unit may be a processor. The processing unit executes the instructions stored in the storage unit, so that the device implements the first aspect or the method described in any one of the possible implementation manners of the first aspect. When the device is a chip in a terminal device, the processing unit may be a processor, and the communication unit may be collectively referred to as a communication interface.

Optionally, the processor, the communication interface and the memory are coupled with each other.

In a fourth aspect, an embodiment of the present application provides a signal sending device, which can implement the second aspect or any possible implementation method of the second aspect, and therefore can also implement any possible implementation of the second aspect or the second aspect. The beneficial effect in the realization method. The signal sending device may be a network device, or a device that can support the network device to implement the method in the second aspect or any possible implementation manner of the second aspect, for example, a chip applied to the network device. The device can implement the above method by software, hardware, or by hardware executing corresponding software.

As an example, an embodiment of the present application provides a signal sending apparatus, including: a communication unit, configured to send first indication information to a terminal device, and the first indication information is used by the terminal device to determine that a plurality of downlink time units are used for receiving downlink Part of the downlink time unit of the control channel; the communication unit is also used to send the downlink control channel to the terminal device in at least one downlink time unit in the partial downlink time unit.

In a possible implementation manner, the communication unit is further configured to send second indication information to the terminal device in the first downlink time unit, and the second indication information is used to instruct the terminal device to send uplink control in the first uplink time unit. Channel, the first downlink time unit is one of the partial downlink time units; the second indication information is carried in the first search space, and the first uplink time unit is the uplink time unit numbered n+t1; n is the first The number of the downlink time unit; the second indication information is carried in the second search space, and the first uplink time unit is an uplink time unit numbered n+t2, where n, t1, and t2 are integers greater than or equal to 0.

In another example, an embodiment of the present application provides a signal sending device. The device may include a communication unit. When the device is a network device, the communication unit may be a communication interface or an interface circuit. So that the device implements the method described in the second aspect or any one of the possible implementation manners of the second aspect. When the device is a chip in a network device, the communication unit can be collectively referred to as a communication interface.

Optionally, the communication interface, the processor, and the memory are coupled with each other.

In the fifth aspect, the embodiments of the present application provide a computer-readable storage medium. The computer-readable storage medium stores a computer program or instruction. When the computer program or instruction runs on a computer, the computer executes the operations as described in the first aspect to the first aspect. A signal receiving method described in any one of the possible implementations on the one hand.

In the sixth aspect, the embodiments of the present application provide a computer-readable storage medium. The computer-readable storage medium stores a computer program or instruction. When the computer program or instruction runs on a computer, the computer executes the operations as described in the second aspect to the first aspect. A signal sending method described in any one of the possible implementations of the two aspects.

In a seventh aspect, embodiments of the present application provide a computer program product including instructions. When the instructions run on a computer, the computer executes the first aspect or a signal reception described in various possible implementations of the first aspect. method.

In an eighth aspect, this application provides a computer program product including instructions, which when the instructions run on a computer, cause the computer to execute the second aspect or a signal sending method described in various possible implementations of the second aspect.

In a ninth aspect, an embodiment of the present application provides a signal receiving device. The signal receiving device includes a processor and a memory. The memory stores an instruction. When the instruction is executed by the processor, it implements the first aspect or the first aspect. A signal receiving method described in various possible implementations.

In a tenth aspect, an embodiment of the present application provides a signal sending device. The signal sending device includes a processor and a memory. The memory stores an instruction. When the instruction is executed by the processor, it implements the second aspect or the second aspect. The various possible implementations of the aspect describe a signal sending method.

In an eleventh aspect, an embodiment of the present application provides a chip that includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a computer program or instruction to implement the first aspect or each of the first aspect. A signal receiving method described in one possible implementation. The communication interface is used to communicate with other modules outside the chip.

In a twelfth aspect, an embodiment of the present application provides a chip that includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a computer program or instruction to implement the second aspect or each of the second aspect. A signal sending method described in one possible implementation. The communication interface is used to communicate with other modules outside the chip.

Specifically, the chip provided in the embodiment of the present application further includes a memory for storing computer programs or instructions.

In a thirteenth aspect, an embodiment of the present application provides a communication system, which includes any one or more of the following: the third aspect and the signal receiving device described in the various possible implementations of the third aspect, A signal sending device described in the fourth aspect and various possible implementation manners of the fourth aspect.

Any device or computer storage medium or computer program product or communication system provided above is used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved can refer to the corresponding method provided above The beneficial effects of the corresponding solutions will not be repeated here.

Description of the drawings

FIG. 1 is a schematic diagram 1 of uplink and downlink communication in different duplex modes according to an embodiment of the application;

FIG. 2 is a schematic diagram 1 of a system architecture of a communication system applicable to an embodiment of the present application;

FIG. 3 is a second schematic diagram of uplink and downlink communication in different duplex modes according to an embodiment of the application;

FIG. 4 is a schematic diagram 2 of a system architecture of a communication system applicable to an embodiment of the present application;

FIG. 5 is a third schematic diagram of a system architecture of a communication system applicable to an embodiment of the present application;

FIG. 6 is a fourth schematic diagram of a system architecture of a communication system applicable to an embodiment of the present application;

FIG. 7 is a first schematic flowchart of a signal sending and receiving method according to an embodiment of the application;

FIG. 8 is a second schematic flowchart of a signal sending and receiving method according to an embodiment of this application;

FIG. 9 is a schematic diagram 1 of the corresponding relationship between uplink and downlink time units of a signal sending and receiving method according to an embodiment of this application;

FIG. 10 is a second schematic diagram of the corresponding relationship between uplink and downlink time units of a signal sending and receiving method according to an embodiment of this application;

FIG. 11 is a third schematic flowchart of a signal sending and receiving method according to an embodiment of this application;

FIG. 12 is a third schematic diagram of the corresponding relationship between uplink and downlink time units of a signal sending and receiving method according to an embodiment of the application;

FIG. 13 is a schematic flowchart 4 of a signal sending and receiving method provided by an embodiment of this application

FIG. 14 is a schematic diagram of a time unit offset of an uplink time unit according to an embodiment of the application;

FIG. 15 is a first structural diagram of a signal sending and receiving apparatus provided by an embodiment of the application;

FIG. 16 is a second schematic structural diagram of a signal sending and receiving apparatus provided by an embodiment of this application;

FIG. 17 is a schematic structural diagram of a communication device provided by an embodiment of this application;

FIG. 18 is a schematic structural diagram of a chip provided by an embodiment of the application.

Detailed ways

The term "at least one (species)" in the embodiments of the present application includes one (species) or more (species). "Multiple (species)" refers to two (species) or more than two (species). For example, at least one of A, B, and C includes: A alone, B alone, A and B simultaneously, A and C simultaneously, B and C simultaneously, and A, B, and C simultaneously. In this application, unless otherwise specified, "/" means or, for example, A/B can mean A or B; the "and/or" in this document is only an association relationship describing associated objects, meaning that There are three relationships, such as A and/or B, which can mean that: A alone exists, A and B exist at the same time, and B exists alone. "Multiple" means two or more than two.

In order to clearly describe the technical solutions of the embodiments of the present application, words such as "first" and "second" are used in the embodiments of the present application to distinguish the same or similar items that have basically the same function and effect. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and order of execution, and words such as "first" and "second" do not limit the difference.

It should be noted that in this application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in this application should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as "exemplary" or "for example" are used to present related concepts in a specific manner.

In a wireless communication system, full-duplex communication includes Frequency Division Duplex (FDD) mode and Time Division Duplex (TDD) mode.

Referring to Figure 1, in TDD mode, the wireless communication system transmits data on a working frequency band, which can be called an unpaired frequency band. During data transmission, the uplink communication and the downlink communication can be separated by time, that is, within a time unit of a preset length, the unpaired frequency band can only be used to realize the downlink communication from the network device to the terminal device, or only to realize Uplink communication from terminal equipment to network equipment. In FDD mode, the wireless communication system can transmit data on two paired frequency bands. One frequency band is used to realize the downlink communication from the network device to the terminal device, and the other frequency band is used to realize the uplink communication from the terminal device to the network device.

Referring to FIG. 2, FIG. 2 shows a schematic diagram of a communication system architecture to which a signal sending and receiving method provided by an embodiment of the present application is applied. The communication system includes: a terminal device 100 and a first communication system that communicates with the terminal device 100. The network device 200 and the second network device 300. That is, the terminal device 100 is in a dual connection state. Wherein, the terminal device 100 uses frequency division duplex FDD technology to communicate with the first network device 200, and the terminal device 100 uses time division duplex TDD technology to communicate with the second network device 300. The terminal device 100 may transmit uplink signals to the first network device 200 and the second network device 300, and the first network device 200 and the second network device 300 may also transmit downlink signals to the terminal device 100.

In the DC scenario, the terminal device can support access to two network devices. The two network devices can be network devices of the same network standard, for example, two LTE system network devices or two NR system network devices. It can be two network equipment of different network standards, for example, a network equipment of an LTE system and a network equipment of an NR system, or a network equipment of a third generation partnership project (3rd generation partnership project, 3GPP) protocol and a non- 3GPP protocol network equipment.

The two network devices include a primary network device and a secondary network device. Since LTE is also called E-UTRA, when the network equipment of the LTE system is the main network equipment and the network equipment of the NR system is the auxiliary network equipment, this access method is called EN-DC. With the evolution of the system, NE-DC can also be supported in the future, that is, the network equipment of the NR system is the main network equipment, and the network equipment of the LTE system is the auxiliary network equipment. Since both EN-DC and NE-DC terminal devices are connected to network devices of two different wireless access technologies, this DC mode can also be collectively referred to as Multi-Radio Dual Connectivity (MR-DC). ).

The network standards of the first network device 200 and the second network device 300 in the embodiment of the present application may be any one or more of the LTE system and the NR system. For example, the first network device 200 and the second network device 300 may be network devices in the NR system. For another example, the first network device 200 and the second network device 300 may be network devices in an LTE system. For another example, the first network device 200 may be a network device in an LTE system, and the second network device 300 may be a network device in an NR system. For another example, the first network device 200 may be a network device in an NR system, and the second network device 300 may be a network device in an LTE system.

Exemplarily, referring to FIG. 3, FIG. 3 takes the first network device 200 as the network device of the LTE system and the second network device 300 as the network device of the NR system as an example for description. In Figure 3, the TDD mode is used to deploy the second network device 300 on an unpaired frequency band, such as a frequency band near 3.5 GHz, and the FDD mode is used to deploy the first network device 200 on a paired frequency band, such as a frequency band near 1.8 GHz. . In this deployment scenario, the working mode of the terminal device 100 in the LTE system is the FDD mode, and the working mode in the NR system is the TDD mode. When the terminal device 100 communicates with the NR system, within a time unit of a preset length, the terminal device 100 can achieve downlink communication only in the downlink (DownLink, DL) through the 3.5GHz frequency band, or only in the 3.5GHz frequency band. Uplink (UpLink, UL) realizes uplink communication. When the terminal device 100 communicates with the first network device 200, within a time unit of a preset length, the terminal device 100 can achieve downlink communication in the DL through the 1.8 GHz frequency band, or uplink communication in the UL through the 1.8 GHz frequency band. .

Referring to FIG. 4, the first network device 200 and the second network device 300 may be deployed on different network devices, or may be deployed on the same network device.

Referring to FIG. 5, when the first network device 200 and the second network device 300 are deployed on the same network device, the network device includes an LTE processor 201, an NR processor 202, and the LTE processor 201 and the NR processor respectively. For the transceiver 203 connected to 202, the terminal device 100 side includes an LTE processor 101, an NR processor 102, and a transceiver 103 respectively connected to the LTE processor 101 and the NR processor 102. When deployed on the same network device, the first network device 200 and the second network device 300 can either share the same set of hardware devices or use different hardware devices.

Exemplarily, when the first network device 200 and the second network device 300 share the same set of hardware devices, the first network device 200 sends data to the terminal device 100, and the first network device 200 performs data processing through the LTE processor 201, and then The transceiver 203 of the network device transmits to the transceiver 103 of the terminal device 100, and the terminal device 100 then processes the received data through the LTE processor 101. The second network device 300 sends data to the terminal device 100. The second network device 300 can perform data processing through the NR processor 202, and then transmit the data to the transceiver 103 of the terminal device 100 through the transceiver 203 of the network device, and the terminal device 100 passes through the transceiver 103 of the terminal device 100. The NR processor 102 processes the received data.

Similarly, referring to FIG. 6, when the first network device 200 and the second network device 300 are deployed on different network devices, the first network device 200 includes a processor 201 and a transceiver 202, and the second network device 300 includes a processor. 301 and a transceiver 302. The terminal device 100 includes an LTE processor 101, an NR processor 102, and a transceiver 103 connected to the LTE processor 101 and the NR processor 102, respectively.

Exemplarily, the first network device 200 and the second network device 300 are deployed on different network devices, and the first network device 200 and the second network device 300 use different hardware devices. The first network device 200 sends data to the terminal device 100. The first network device 200 performs data processing through the processor 201, and then transmits the data to the transceiver 103 of the terminal device 100 through the transceiver 202, and the terminal device 100 passes through the terminal device 100 side The LTE processor 101 processes the received data. The second network device 300 sends data to the terminal device 100. The second network device 300 performs data processing through the processor 301, and then transmits the data to the transceiver 103 of the terminal device 100 through the transceiver 302, and the terminal device 100 passes through the terminal device 100 The NR processor 102 processes the received data.

In the embodiment of the present application, the terminal device 100 is a device that provides users with voice and/or data connectivity, for example, a handheld device with a wireless connection function, a vehicle-mounted device, and the like. It can also be called User Equipment (UE), Access Terminal (Access Terminal), User Unit (User Unit), User Station (User Station), Mobile Station (Mobile Station), Mobile Station (Mobile), and Remote Station (Remote Station), Remote Terminal (Remote Terminal), Mobile Equipment (Mobile Equipment), User Terminal (User Terminal), Wireless Communication Equipment (Wireless Telecom Equipment), User Agent (User Agent), User Equipment (User Equipment) or User Device. The terminal device can be a station (Station, STA) in a wireless local area network (Wireless Local Area Networks, WLAN), a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, and a wireless local loop (Wireless Local). Loop, WLL) stations, Personal Digital Assistant (PDA) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, and next-generation communication systems ( For example, terminal equipment in the fifth-generation (Fifth-Generation, 5G) communication network or terminal equipment in the future evolution of the public land mobile network (Public Land Mobile Network, PLMN) network, etc. Among them, 5G can also be called a new air interface.

As an example, in the embodiment of the present application, the terminal device 100 may also be a wearable device. Wearable devices can also be called wearable smart devices. It is a general term for using wearable technology to intelligently design everyday wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes. 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 kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction. In a broad sense, 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 all kinds of smart bracelets and smart jewelry for physical sign monitoring.

The first network device 200 and the second network device 300 in the embodiments of the present application may be access network devices capable of communicating with the terminal device 100, and may be access points (Wireless Local Area Network, WLAN). Access Point, AP), the base station (Base Transceiver Station, BTS) in the Global System for Mobile Communications (GSM) or Code Division Multiple Access (CDMA), or broadband code The base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA) can also be an evolved NodeB (eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device , Wearable devices and base stations in the future 5G network (gNB) or the future evolution of the public land mobile network (Public Land Mobile Network, PLMN) network, etc. The access network equipment described in this application can be implemented by one node to implement the functions of the RRC, PDCP, RLC, and MAC protocol layers; or multiple nodes can implement the functions of these protocol layers; for example, in an evolution structure, so The access network equipment includes a centralized unit (CU) and a distributed unit (DU). Multiple DUs can be centrally controlled by one CU. The CU and DU can be divided according to the protocol layer of the wireless network, such as the PDCP layer and The functions of the above protocol layers are set in the CU, and the protocol layers below PDCP, for example, the functions of the RLC layer and MAC layer are set in the DU. This type of protocol layer division is just an example, it can also be divided in other protocol layers, for example, in the RLC layer, the functions of the RLC layer and above are set in the CU, and the functions of the protocol layers below the RLC layer are set in the DU; Or, in a certain protocol layer, for example, part of the functions of the RLC layer and the functions of the protocol layer above the RLC layer are set in the CU, and the remaining functions of the RLC layer and the functions of the protocol layer below the RLC layer are set in the DU. In addition, it can also be divided in other ways, for example, by time delay. The functions that need to meet the delay requirement for processing time are set in the DU, and the functions that do not need to meet the delay requirement are set in the CU.

In the description of this application, "indication" may include direct indication and indirect indication, as well as explicit indication and implicit indication. The information indicated by a certain piece of information (the first indication information described below) is called information to be instructed. In the specific implementation process, there are many ways to indicate the information to be instructed. For example, the information to be indicated may be directly indicated, wherein the information to be indicated itself or the index of the information to be indicated, etc. For another example, the information to be indicated may also be indicated indirectly by indicating other information, where there is an association relationship between the other information and the information to be indicated. For another example, it is also possible to indicate only a part of the information to be indicated, while other parts of the information to be indicated are known or agreed in advance. In addition, it is also possible to realize the indication of specific information by means of the pre-arranged order (for example, stipulated by the agreement) of the various information, so as to reduce the indication overhead to a certain extent.

For the MR-DC terminal device, that is, the terminal device 100 working in the EN-DC or NE-DC mode, the terminal device 100 needs to receive the PDCCH and downlink control information in each time unit of a preset length on the LTE side. Especially for the terminal device 100 in the FDD mode on the LTE side, since the terminal device 100 can implement downlink communication in each time unit of a preset length, the terminal device 100 needs to be in each time unit of a preset length Receive PDCCH. However, when the LTE-side service is lightly loaded, the terminal device 100 will only receive the downlink signal for a part of the time unit of the preset length. If the terminal device 100 tries to receive the PDCCH in each time unit of the preset length, it will cause Unnecessary energy consumption is not conducive to the energy saving of the terminal device 100.

It should be noted that the time unit in the embodiment of the present application may be a subframe, a time slot, a symbol, etc. Taking the time unit as a subframe as an example, the uplink time unit may be an uplink subframe for transmitting an uplink signal, and the downlink time unit may be The downlink subframe in which the downlink signal is received.

Referring to FIG. 7, an embodiment of the present application provides a signal sending and receiving method, which can be applied to the DC communication scenario shown in FIG. 2, and the method includes:

S101. The network device sends first instruction information to the terminal device 100, so that the terminal device 100 receives the first instruction information from the network device.

The first indication information is used to determine part of the downlink time units used for receiving the downlink control channel among the multiple downlink time units. Wherein, the number of some downlink time units is less than the number of the multiple downlink time units.

S102. The terminal device 100 determines, according to the first indication information, a part of the downlink time units used for receiving the downlink control channel among the multiple downlink time units.

The downlink control channel may be a PDCCH, and the PDCCH carries downlink control information (Downlink Control Information, DCI).

It should be understood that the terminal device 100 has multiple downlink time units and multiple uplink time units. The multiple downlink time units and multiple uplink time units may be pre-configured for the terminal device 100, or may be acquired by the terminal device 100 through the following step S104, which is not limited in this embodiment of the application.

S103. The terminal device 100 receives the downlink control channel in a part of the downlink time unit.

It is understandable that, before S103, the network device sends the downlink control channel to the terminal device 100 in at least one downlink time unit in some downlink time units.

Exemplarily, the network device may send the downlink control channel on the target downlink time unit, and the terminal device 100 receives the downlink control channel in the target downlink time unit, and the target downlink time unit may be any of the partial downlink time units.

It should be understood that some downlink time units in the embodiments of the present application are time units that may be used to carry the downlink control channel.

The embodiment of the present application provides a signal sending and receiving method. A terminal device determines a part of a downlink time unit from a plurality of downlink time units according to first indication information sent by a network device and receives a downlink control channel on the part of the downlink time unit. Compared with the prior art that the terminal device needs to receive the downlink control channel on each downlink time unit of the multiple downlink time units, the terminal device can reduce the channel reception frequency, thereby solving the problem of the terminal device frequently receiving the downlink control channel. The problem of excessive energy consumption.

As a possible embodiment of the present application, referring to FIG. 8, the method provided in the embodiment of the present application further includes:

S104. The terminal device 100 receives the first time domain resource configuration information.

It is understandable that before S101, the network device sends the first time domain resource configuration information to the terminal device 100.

It should be noted that the network device may be the first network device 200, and therefore, the first time domain resource configuration information may be configured by the first network device 200 for the terminal device 100.

In a possible implementation manner, the first time domain resource configuration information may also be configured by the second network device 300 for the terminal device 100, which is not limited in the embodiment of the present application.

The first time domain resource configuration information is used to indicate multiple downlink time units of the terminal device 100. The terminal device 100 may determine according to the first time domain resource configuration information that the downlink control channel can be received in each downlink time unit of the multiple downlink time units. The multiple downlink time units may be continuous or discrete in time.

In the multiple downlink time units in the embodiment of the present application, each downlink time unit has a number, and the number of each downlink time unit may be configured by the first network device 200 or the second network device 300, or the terminal device and the first network The device 200 or the second network device 300 is determined through negotiation.

In a possible implementation manner, the first indication information indicates part of the downlink time unit. To facilitate the indication, the first indication information may be specifically used to indicate the serial number of the partial downlink time unit in the multiple downlink time units. The terminal device 100 may directly determine part of the downlink time unit according to the number indicated by the first indication information.

For example, referring to FIG. 9, when the first indication information indicates number 1, number 2, the terminal device 100 can determine that some of the downlink time units include: a downlink time unit D ₁ numbered 1 and a downlink time unit D _{2 numbered 2} .

It should be noted that the number may also be referred to as a serial number, a sequence number, a sequence identification, etc., which is not limited in the embodiment of the present application.

In an example, part of the downlink time units includes an odd numbered downlink time unit among the multiple downlink time units.

For example, continuing to refer to FIG. 9, when a part of the downlink time unit includes a downlink time unit numbered odd among multiple downlink time units, the terminal device 100 may set the number of the downlink time unit D ₁ numbered 1 and the downlink time unit number 3 D ₃ , the downlink time unit D ₅ numbered 5, the downlink time unit D ₇ numbered 7, and the downlink time unit D ₉ numbered 9 receive uplink and downlink control channels.

In another example, part of the downlink time units includes even-numbered downlink time units among the multiple downlink time units.

For example, continuing to refer to FIG. 9, when part of the downlink time units includes even-numbered downlink time units among the multiple downlink time units, the terminal device 100 may use the downlink time unit D ₀ numbered 0 and the downlink time unit number 2 D _2, No. 4 downlink time unit D _4, numbered downlink time unit 6 D _6, No. ₈ receives a downlink control channel over the downlink time unit D 8.

It can be understood that the terminal device 100 in the embodiment of the present application can reduce the channel reception frequency by determining that some of the downlink time units are the downlink time units numbered odd or even numbered among the multiple downlink time units.

Of course, it is understandable that the first indication information can also be used to indicate the start number and end number of part of the downlink time unit, so that it is convenient for the terminal device to determine part of the downlink time unit according to the start number and the end number, and download it in this part. Receive the downlink control channel in the time unit.

For example, continuing to refer to FIG. 9, when the start number corresponding to part of the downlink time unit is number 1, and the end number is number 4, the terminal device 100 can set the number 1 to number 4 corresponding to the downlink time unit D ₁ to the downlink time unit D _{4 The} uplink and downlink control channels are received.

Or the first indication information can also be used to indicate the start number and time length of part of the downlink time unit, so that the terminal device can determine part of the downlink time unit according to the start number and time length, and receive the downlink control in this part of the downlink time unit channel.

For example, continuing to refer to FIG. 9, when the start number corresponding to part of the downlink time unit is number 1, and the time length is 6, the terminal device 100 can set the number 1 to number 6 corresponding to the downlink time unit D ₁ to the downlink time unit D ₆ Receive the downlink control channel in the middle.

Continuing to refer to FIG. 9, it should be understood that since the terminal device 100 uses FDD to communicate with the first network device 200, the first time domain resource configuration information is also used to indicate multiple uplink time units of the terminal device 100. Time units can be used to carry uplink signals, and multiple uplink time units correspond to multiple downlink time units one-to-one, that is, at the same time, one uplink time unit corresponds to one downlink time unit. For example, the uplink time unit U ₁ corresponds to the downlink time unit D ₁ , and the uplink time unit U ₅ corresponds to the downlink time unit D ₅ .

It should be understood that "U" in FIG. 9 represents an uplink time unit, "D" represents a downlink time unit, and the reference number in the lower right corner of "U" or "D" represents a serial number.

As a possible embodiment of the present application, continuing to refer to FIG. 8, the method provided in the embodiment of the present application further includes:

S105. The network device sends second indication information to the terminal device 100 in the first downlink time unit, so that the terminal device 100 receives the second indication information from the network device in the first downlink time unit.

The first downlink time unit is a time unit in some downlink time units. The second indication information is used to instruct the terminal device 100 to send the uplink control channel to the network device in the first uplink time unit. The first uplink time unit is one time unit among multiple uplink time units.

Exemplarily, the second indication information may be downlink control information.

The terminal device 100 can determine the downlink time unit for receiving the second indication information, that is, the first downlink time unit, by receiving the second indication information through the bearer. The first uplink time unit can be further determined through the first downlink time unit.

In a possible implementation manner, when the second indication information is carried in the first search space of the terminal device 100, the first uplink time unit is an uplink time unit numbered n+t1. Wherein, n is the number of the first downlink time unit.

When the second indication information is carried in the second search space of the terminal device 100, the first uplink time unit is an uplink time unit numbered n+t2. Wherein, n, t1 and t2 are integers greater than or equal to zero.

Exemplarily, referring to FIG. 10, the first search space may be a dedicated search space of the terminal device 100. When the second indication information is carried in the dedicated search space of the terminal device 100, t1 may be 3. Therefore, the terminal device 100 may send the uplink control channel to the network device on the uplink time unit numbered n+3.

The second search space may be a common search space. When the second indication information is carried in the common search space, t2 may be 4. Therefore, the terminal device 100 may send uplink control to the network device on the uplink time unit numbered n+4. channel.

It should be noted that the search space refers to a time-frequency resource group composed of some time-frequency resources that may be used to carry control information agreed in advance between the terminal device 100 and the network device. The search space includes a dedicated search space and a public search space. The dedicated search space refers to the time-frequency resource group that carries the control information of a specific terminal device, and the public search space refers to the control information of one or more terminal devices within the coverage of the network device. The time-frequency resource group.

Therefore, by receiving the second indication information, the terminal device 100 can determine that the uplink control channel can be sent to the network device in the first uplink time unit. By configuring the uplink scheduling timing of the terminal device 100, it can be ensured that all configured uplink time units can be used.

Exemplarily, the uplink control channel may include a physical uplink control channel (PUCCH), a physical uplink shared channel (PUSCH), and a physical random access channel (PRACH). ), channel sounding reference signal (Sounding Reference Signal, SRS), which are described here in a unified manner, and will not be described in detail later.

It should be noted that the second indication information may be carried in downlink control information (Downlink Control Information, DCI), and the above-mentioned first indication information may be through radio resource control (Radio Resource Control, RRC) signaling or media access control ( Media Access Control (MAC) signaling is sent to the terminal device 100.

As another possible embodiment of the present application, the first indication information indicates at least one uplink time unit used for sending the uplink control channel among the multiple uplink time units, and some of the downlink time units correspond to the at least one uplink time unit.

It should be understood that part of the downlink time unit corresponds to at least one uplink time unit, and it can also be understood that a part of the downlink time unit is determined by the at least one uplink time unit.

In a possible implementation manner, the first indication information includes information used to determine uplink and downlink configuration information. Referring to FIG. 11, the specific implementation manner of S102 includes:

S106. The terminal device 100 determines uplink and downlink configuration information according to the first indication information. The uplink and downlink configuration information is used by the terminal device 100 to determine at least one uplink time unit used to send the uplink control channel among the multiple uplink time units.

Exemplarily, the information used to determine the uplink and downlink configuration information may be a direct indication of the uplink and downlink configuration information. For example, the information used to determine the uplink and downlink configuration information is the uplink and downlink configuration information. Exemplarily, the information used to determine the uplink and downlink configuration information may be "DSUUUDSUUU" in Table 1.

In order to reduce the number of bits of the first indication information, when the terminal device 100 has an uplink and downlink configuration table as shown in Table 1, the information used to determine the uplink and downlink configuration information may also be an indirect indication of the uplink and downlink configuration information, for example, The information used to determine the uplink and downlink configuration information is an index value corresponding to the uplink and downlink configuration information. The terminal device 100 may determine the uplink and downlink configuration information from the uplink and downlink configuration table according to the index value.

Exemplarily, the information used to determine the uplink and downlink configuration information is index value 0, and the uplink and downlink configuration information indicated by index value 0 is "DSUUUDSUUU". The information used to determine the uplink and downlink configuration information is index value 1, and the uplink and downlink configuration information indicated by index value 1 is DSUUDDSUUD.

S107. The terminal device determines at least one uplink time unit from the multiple uplink time units according to the uplink and downlink configuration information.

Exemplarily, when the information used to determine the uplink and downlink configuration information is the index value corresponding to the uplink and downlink configuration information, the terminal device 100 may determine the uplink and downlink configuration information corresponding to the index value according to Table 1, and further according to the uplink and downlink configuration information. The configuration information determines at least one uplink time unit from the multiple uplink time units.

Exemplarily, referring to 12-1 in FIG. 12, taking multiple uplink time units including uplink time unit U ₀ to uplink time unit U ₉ as an example, in conjunction with Table 1, it can be seen that when the index value is 0, the index value 0 indicates The uplink and downlink configuration information of is DSUUUDSUUU, therefore, at least one uplink time unit includes uplink time unit U ₂ , uplink time unit U ₃ , uplink time unit U ₄ , uplink time unit U ₇ , and uplink time unit among multiple uplink time units U ₈ , the upstream time unit U ₉ .

Referring to 12-2 in Figure 12, when the index value is 1, the uplink and downlink configuration information indicated by the index value 1 is DSUUDDSUUD, therefore, at least one uplink time unit includes uplink time unit U ₂ and uplink time unit U 2 among multiple uplink time units. The time unit U ₃ , the upstream time unit U ₇ , and the upstream time unit U ₈ .

Table 1 Uplink and Downlink Configuration Table

It should be understood that the uplink and downlink configuration information shown in Table 1 may indicate the downlink time unit D, the uplink time unit U, and the special time unit U. The terminal device 100 and the network device perform uplink transmission on the uplink time unit indicated by the uplink and downlink configuration information, and perform downlink transmission on the downlink time unit indicated by the uplink and downlink configuration information. Among them, the special time unit is used to switch between downlink transmission and uplink transmission.

S108. The terminal device determines part of the downlink time unit according to at least one uplink time unit.

In a possible implementation manner, the terminal device 100 determines that part of the downlink time unit includes multiple downlink time units numbered m-t3, where m is the number of the at least one uplink time unit, and m is greater than or equal to t3 , M and t3 are both integers greater than or equal to 0.

Since some downlink time units include multiple downlink time units numbered m-t3, the number m of at least one uplink time unit is determined according to the m-t3 between at least one uplink time unit and the downlink time unit. The corresponding relationship can determine part of the downlink time unit.

Exemplarily, the time unit is still used as a subframe as an example for description. Since there may be multiple time slots in a subframe, the numbers of the uplink time unit and the downlink time unit are sequenced in a 0-9 cycle, refer to FIG. 12 In 12-1, take t3 as 4, and at least one uplink time unit includes U ₂ , U ₃ , U ₄ , U ₇ , U ₈ , U ₉ among the multiple uplink time units as an example. At least one uplink time unit _{When the unit is U 2} numbered 2 in time slot 2, this part of the downlink time unit includes downlink time unit D ₈ numbered in time slot 1, and at least one uplink time unit is U _{3 numbered 3 in time slot 2.} When this part of the downlink time unit includes the downlink time unit D ₉ numbered in time slot 1, and at least one uplink time unit is U ₄ numbered 4 in time slot 2, this part of the downlink time unit includes time slot 2 No. D _{0 0} downlink time units of the at least one uplink time slot unit 2 is numbered ₇ U 7, which comprises a portion of a downlink time slot unit numbered downlink time 2 3 ₃ D unit, at least one When the uplink time unit is U ₈ numbered 8 in time slot 2, this part of the downlink time unit includes downlink time unit D ₄ numbered 4 in time slot 2, and at least one uplink time unit is number 9 in time slot 2. At U ₉ , this part of the downlink time unit includes the downlink time unit D ₅ numbered 5 in time slot 2.

Therefore, when t3 is 4 and at least one uplink time unit includes U ₂ , U ₃ , U ₄ , U ₇ , U ₈ , U ₉ among the multiple uplink time units, part of the downlink time unit includes the downlink time unit D ₈ , The downlink time unit D ₉ , the downlink time unit D ₀ , the downlink time unit D ₃ , the downlink time unit D _4, and the downlink time unit D ₅ .

Referring to 12-2 in Figure 12, taking t3 as 4 and at least one uplink time unit including U ₂ , U ₃ , U ₇ , and U _{8 of the} multiple uplink time units as an example for description, at least one uplink time unit is time _{When U 2} numbered 2 in slot 2, this part of the downlink time unit includes downlink time unit D ₈ numbered 8 in time slot 1, and when at least one uplink time unit is U ₃ numbered 3 in time slot 2, the Part of the downlink time unit includes the downlink time unit D ₉ numbered 9 in time slot 1, and at least one uplink time unit is U ₇ numbered 7 in time slot 2, this part of the downlink time unit includes time slot 2 number 3 downlink time units D _3, the at least one uplink time slot unit 2 U 8 is numbered _8, the portion of the downlink time slot unit 2 comprises a number of downlink time units 4 D _4.

Therefore, some downlink time units include a downlink time unit D ₈ , a downlink time unit D ₉ , a downlink time unit D _3, and a downlink time unit D ₄ .

It should be noted that in the LTE system, one subframe may include 2 timeslots, and in the NR system, one subframe may include 1 timeslot, 2 timeslots, or a larger number of timeslots.

In a possible implementation manner, referring to FIG. 13, the method provided in an embodiment of the present application further includes:

S109. The network device sends the offset value to the terminal device 100, so that the terminal device 100 receives the offset value from the network device.

It should be noted that the network device may send the offset value alone, or may send the offset value through the first indication information, which is not limited in the embodiment of the present application.

On the basis of S109, S107 in the embodiment of the present application can be specifically implemented in the following ways:

S1071. The terminal device determines at least one uplink time unit from multiple uplink time units according to the uplink and downlink configuration information and the offset value.

When at least one uplink time unit is determined through the uplink and downlink configuration information, if the terminal device 100 receives the offset value from the network device, it needs to re-determine the updated at least one uplink time unit in combination with the offset value.

Exemplarily, referring to FIG. 14, taking the offset value of 2 as an example for description, when it is determined through the uplink and downlink configuration information that at least one uplink time unit includes multiple uplink time units U ₂ , U ₃ , U ₇ , U _8. According to the offset value 2, it can be known that the at least one updated uplink time unit includes U ₄ , U ₅ , U ₉ , U ₀ among the multiple uplink time units. After determining at least one updated uplink time unit, the terminal device 100 may determine a part of the downlink time unit according to the updated at least one uplink time unit.

The foregoing mainly introduces the solution of the embodiment of the present application from the perspective of interaction between various devices. It can be understood that, in order to realize the above-mentioned functions, each device, such as the terminal device 100 and the network device, includes a hardware structure and/or software module corresponding to each function. Those skilled in the art should easily realize that in combination with the units and algorithm steps of the examples described in the embodiments disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.

The embodiment of the present application can divide the terminal device 100 and the network device into functional units according to the above method examples. For example, each functional unit can be divided corresponding to each function, or two or more functions can be integrated into one processing unit. . The above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.

The method of the embodiment of the present application is described above in conjunction with FIG. 7 to FIG. 14, and the device for executing the foregoing method provided by the embodiment of the present application is described below. Those skilled in the art can understand that the methods and apparatuses can be combined and quoted with each other. The signal sending and receiving apparatus provided in the embodiments of the present application can execute the steps performed by the terminal device 100 and the network device in the above signal sending and receiving methods.

The following is an example of dividing each function module corresponding to each function:

In the case of using an integrated unit, FIG. 15 shows a signal sending and receiving device involved in the foregoing embodiment, and the device may include: a communication unit 101 and a processing unit 102.

In an example, the communication device is a terminal device 100 or a chip applied in the terminal device 100. In this case, the processing unit 102 is configured to support the device to execute a signal receiving method provided in the foregoing embodiment, for example, to execute S102 executed by the terminal device 100 in FIG. 7. The communication unit 101 is configured to support the apparatus to execute a signal receiving method provided in the foregoing embodiment, for example, to execute S101 and S103 executed by the terminal device 100 in FIG. 7.

In a possible implementation manner, the communication unit 101 is specifically configured to support the apparatus to execute S104, S105, and S109 performed by the terminal device 100 in the foregoing embodiment. The processing unit 102 is specifically configured to support the apparatus to execute S106, S107, S108, and S1071 executed by the terminal device 100 in the foregoing embodiment.

In another example, the device is a network device or a chip applied to a network device. In this case, the communication unit 101 is used to support the device to execute a signal sending method provided in the foregoing embodiment, for example, to execute S101 and S103 executed by the network device in FIG. 7.

In a possible implementation manner, the communication unit 101 is specifically configured to support the apparatus to execute S104, S105, and S109 performed by the network device in the foregoing embodiment.

Optionally, the communication device may further include a storage unit. The storage unit is used to store computer program code, and the computer program code includes instructions. If the device is applied to a terminal device 100, the storage unit can be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the terminal device 100 located outside the chip (for example, only Read memory, random access memory, etc.).

In the case of using an integrated unit, FIG. 16 shows a schematic diagram of a possible logical structure of a signal sending and receiving device involved in the foregoing embodiment. The communication device includes: a communication module 113. The communication module 113 is used to support the steps of sending or receiving information/data in the device.

In a possible embodiment, the communication device may further include a processing module 112, which is used to control and manage the actions of the device. For example, the processing module 112 is used to perform information/data processing in the device. step.

In a possible embodiment, the communication device may further include a storage module 111 for storing program codes and data that can be used by the communication device.

Exemplarily, when the device is the terminal device 100, or is a chip applied to the terminal device 100. In this case, the communication module 113 is used to support the device to execute a signal receiving method provided in the foregoing embodiment, for example, to execute S101 and S103 executed by the terminal device 100 in FIG. 7. The processing module 112 is configured to support the apparatus to execute a signal receiving method provided in the foregoing embodiment, for example, to execute S102 executed by the terminal device 100 in FIG. 7.

In a possible implementation manner, the communication module 113 is specifically configured to support the apparatus to execute S104, S105, and S109 performed by the terminal device 100 in the foregoing embodiment. The processing module 112 is specifically configured to support the apparatus to execute S106, S107, S108, and S1071 executed by the terminal device 100 in the foregoing embodiment.

Exemplarily, the communication device is a network device or a chip applied to the network device. In this case, the communication module 113 is used to support the device to execute a signal sending method provided in the foregoing embodiment, for example, to execute S101 and S103 executed by the network device in FIG. 7.

In a possible implementation manner, the communication module 113 is specifically configured to support the apparatus to execute S104, S105, and S109 performed by the network device in the foregoing embodiment.

The processing module 112 may be a processor or a controller, for example, a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, Hardware components or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of this application. The processor may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on. The communication module 113 may be a transceiver, a transceiver circuit, or a communication interface. The storage module 111 may be a memory.

When the processing module 112 is the processor 41 or the processor 45, the communication module 113 is the communication interface 43 or the transceiver, and the storage module 111 is the memory 42, the communication device involved in this application may be the communication device shown in FIG. 17. The communication device includes a processor 41, a communication line 44, and at least one communication interface (in FIG. 17 it is only an example, taking the communication interface 43 as an example for illustration).

Optionally, the communication device may further include a memory 42.

The processor 41 can be a general-purpose central processing unit (central processing unit, CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the execution of the program of this application. integrated circuit.

The communication line 44 may include a path to transmit information between the aforementioned components.

The communication interface 43 uses any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .

The memory 42 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions The dynamic storage device can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc storage (Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can be used by a computer Any other media accessed, but not limited to this. The memory can exist independently and is connected to the processor through the communication line 44. The memory can also be integrated with the processor.

The memory 42 is used to store computer execution instructions for executing the solution of the application, and the processor 41 controls the execution. The processor 41 is configured to execute computer-executable instructions stored in the memory 42 to implement the signal sending and receiving methods provided in the following embodiments of the present application.

Optionally, the computer-executable instructions in the embodiments of the present application may also be referred to as application program codes, which are not specifically limited in the embodiments of the present application.

In a specific implementation, as an embodiment, the processor 41 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 17.

In a specific implementation, as an embodiment, the communication device may include multiple processors, such as the processor 41 and the processor 45 in FIG. 17. Each of these processors can be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).

FIG. 18 is a schematic structural diagram of a chip 150 provided by an embodiment of the present application. The chip 150 includes one or more (including two) processors 1510 and a communication interface 1530.

Optionally, the chip 150 further includes a memory 1540. The memory 1540 may include a read-only memory and a random access memory, and provides operation instructions and data to the processor 1510. A part of the memory 1540 may also include a non-volatile random access memory (NVRAM).

In some embodiments, the memory 1540 stores the following elements, execution modules or data structures, or their subsets, or their extended sets.

In the embodiment of the present application, the corresponding operation is executed by calling the operation instruction stored in the memory 1540 (the operation instruction may be stored in the operating system).

The processor 1510 controls processing operations of any one of the terminal device 100 and the network device, and the processor 1510 may also be referred to as a central processing unit (CPU).

The memory 1540 may include a read-only memory and a random access memory, and provides instructions and data to the processor 1510. A part of the memory 1540 may also include a non-volatile random access memory (NVRAM). For example, in an application, the processor 1510, the communication interface 1530, and the memory 1540 are coupled together through a bus system 1520, where the bus system 1520 may include a power bus, a control bus, and a status signal bus in addition to a data bus. However, for the sake of clear description, various buses are marked as the bus system 1520 in FIG. 18.

The method disclosed in the foregoing embodiments of the present application may be applied to the processor 1510 or implemented by the processor 1510. The processor 1510 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor 1510 or instructions in the form of software. The aforementioned processor 1510 may be a general-purpose processor, a digital signal processing (digital signal processing, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (field-programmable gate array, FPGA), or Other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers. The storage medium is located in the memory 1540, and the processor 1510 reads the information in the memory 1540, and completes the steps of the foregoing method in combination with its hardware.

In a possible implementation manner, the communication interface 1530 is used to perform the receiving and sending steps of the terminal device 100 and the network device in any of the foregoing embodiments. The processor 1510 is configured to execute the processing steps of the terminal device 100 in any of the foregoing embodiments.

The above communication unit may be an interface circuit or communication interface of the device for receiving signals from other devices. For example, when the device is implemented in the form of a chip, the communication unit is an interface circuit or a communication interface used by the chip to receive signals or send signals from other chips or devices.

In the foregoing embodiment, the instructions stored in the memory for execution by the processor may be implemented in the form of a computer program product. The computer program product may be written in the memory in advance, or it may be downloaded and installed in the memory in the form of software.

The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. Computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions may be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) to transmit to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be stored by a computer or a data storage device such as a server or a data center integrated with one or more available media. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk, SSD).

On the one hand, a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium. When the instructions are executed, the terminal device 100 or a chip applied to the terminal device 100 executes a signal provided by the foregoing embodiment. The operations performed by the terminal device 100 in the sending and receiving methods, for example, performing S101, S102, S103, S104, S105, S106, S107, S108, S1071, S109 performed by the terminal device 100 in FIG. 7 and FIG. 11 or FIG. .

On the other hand, a computer-readable storage medium is provided, and instructions are stored in the computer-readable storage medium. When the instructions are executed, a network device or a chip applied to the network device executes a signal provided in the foregoing embodiment. The operations performed by the network device in the sending and receiving methods, for example, perform S101, S103, S104, S105, and S109 performed by the network device in FIG. 7 and FIG. 11 or FIG. 13.

The aforementioned readable storage medium may include: U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk and other media that can store program codes.

On the one hand, a computer program product including instructions is provided. The computer program product stores instructions. When the instructions are executed, the terminal device 100 or a chip applied to the terminal device 100 executes a signal transmission provided by the above-mentioned embodiments. The operations performed by the terminal device 100 in the receiving method, for example, perform S101, S102, S103, S104, S105, S106, S107, S108, S1071, S109 performed by the terminal device 100 in FIG. 7 and FIG. 11 or FIG.

On the other hand, a computer program product including instructions is provided. The computer program product stores instructions. When the instructions are executed, the network device or a chip applied to the network device executes the signal sending provided in the above-mentioned embodiments. , The operations performed by the network device in the receiving method, for example, perform S101, S103, S104, S105, and S109 performed by the network device in FIG. 7 and FIG. 11 or FIG.

On the one hand, a chip is provided. The chip is applied to a terminal device 100. The chip includes at least one processor and a communication interface. The communication interface is coupled to the at least one processor. The operations performed by the terminal device 100 in the signal sending and receiving methods, for example, perform S101, S102, S103, S104, S105, S106, S107, S108, S1071 performed by the terminal device 100 in FIG. 7 and FIG. 11 or FIG. , S109.

On the other hand, a chip is provided. The chip is applied to a network device. The chip includes at least one processor and a communication interface, the communication interface is coupled to the at least one processor, and the processor is used to run instructions to execute the one provided in the foregoing embodiment. The operations performed by the network device in the signal sending and receiving methods, for example, perform S101, S103, S104, S105, and S109 performed by the network device in FIG. 7 and FIG. 11 or FIG.

In another embodiment of the present application, a communication system is also provided, including a terminal device 100 and a network device. The communication system can be adapted to the architecture shown in FIG. 2, wherein the terminal device 100 can execute FIG. 7 and FIG. The operation performed by the terminal device 100 in FIG. 11 or FIG. 13, for example, performing S101, S102, S103, S104, S105, S106, S107, S108, S1071, S109 performed by the terminal device 100 in FIG. 7 and FIG. 11 or FIG. . The network device may perform operations performed by the network device in FIG. 7 and FIG. 11 or FIG. 13, for example, perform S101, S103, S104, S105, and S109 performed by the network device in FIG. 7 and FIG. 11 or FIG.

In the above-mentioned embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. Computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions may be transmitted from a website, computer, server, or data center through a cable (such as Coaxial cable, optical fiber, digital subscriber line (digital subscriber line, referred to as DSL) or wireless (such as infrared, wireless, microwave, etc.) transmission to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that can be accessed by a computer or include one or more data storage devices such as servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium (for example, a solid state disk (SSD)).

Although the present application is described in conjunction with various embodiments, in the process of implementing the claimed application, those skilled in the art can understand and realize the disclosure by looking at the drawings, the disclosure, and the appended claims. Other changes to the embodiment. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "one" does not exclude a plurality. A single processor or other unit may implement several functions listed in the claims. Certain measures are described in mutually different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

Although the application has been described in combination with specific features and embodiments, it is obvious that various modifications and combinations can be made without departing from the spirit and scope of the application. Correspondingly, the specification and drawings are merely exemplary descriptions of the application as defined by the appended claims, and are deemed to cover any and all modifications, changes, combinations or equivalents within the scope of the application. Obviously, those skilled in the art can make various changes and modifications to the application without departing from the spirit and scope of the application. In this way, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalent technologies, this application also intends to include these modifications and variations.

Finally, it should be noted that the above are only specific implementations of this application, but the scope of protection of this application is not limited to this. Any changes or substitutions within the technical scope disclosed in this application shall be covered by this application. Within the scope of protection applied for. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A signal receiving method, characterized in that it comprises:

Receiving the first instruction information from the network device;

Determine, according to the first indication information, a part of the downlink time units used for receiving the downlink control channel among the multiple downlink time units;

Receive the downlink control channel in the part of the downlink time unit.
The method of claim 1, wherein:

The first indication information indicates the partial downlink time unit, where the partial downlink time unit includes an odd numbered downlink time unit among the multiple downlink time units, or the partial downlink time unit includes the The downstream time unit numbered as an even number among the multiple downstream time units.
The method according to claim 1 or 2, wherein the method further comprises:

Receive second indication information from the network device in the first downlink time unit, where the second indication information is used to indicate that the uplink control channel is sent to the network device in the first uplink time unit, and the first downlink time unit The travel time unit is a time unit in the partial downlink time units;

The second indication information is carried in the first search space, the first uplink time unit is an uplink time unit numbered n+t1; n is the number of the first downlink time unit;

The second indication information is carried in the second search space, and the first uplink time unit is an uplink time unit numbered n+t2, where n, t1, and t2 are integers greater than or equal to 0.
The method of claim 1, wherein:

The first indication information indicates at least one uplink time unit used for sending an uplink control channel among the multiple uplink time units, and the part of the downlink time unit corresponds to the at least one uplink time unit.
The method of claim 4, wherein:

The part of the downlink time unit includes a downlink time unit numbered m-t3 among the multiple downlink time units, where m is the number of the at least one uplink time unit, where m is greater than or equal to t3, m, t3 Both are integers greater than or equal to 0.
A signal sending method, characterized in that it comprises:

Sending first indication information to a terminal device, where the first indication information is used by the terminal device to determine a part of a plurality of downlink time units for receiving a downlink control channel;

Send a downlink control channel to the terminal device in at least one downlink time unit in the partial downlink time units.
The method of claim 6, wherein:

The first indication information indicates the partial downlink time unit, where the partial downlink time unit includes an odd numbered downlink time unit among the multiple downlink time units, or the partial downlink time unit includes the Downlink time unit numbered as an even number among multiple downlink time units.
The method according to claim 6 or 7, wherein the method further comprises:

Send second indication information to the terminal device in the first downlink time unit, where the second indication information is used to instruct the terminal device to send the uplink control channel in the first uplink time unit, and the first downlink time unit The time unit is a time unit in the partial downlink time units;

The second indication information is carried in the first search space, the first uplink time unit is an uplink time unit numbered n+t1; n is the number of the first downlink time unit;

The second indication information is carried in the second search space, and the first uplink time unit is an uplink time unit numbered n+t2, where n, t1, and t2 are integers greater than or equal to 0.
The method of claim 6, wherein:

The first indication information indicates at least one uplink time unit used for sending an uplink control channel among the multiple uplink time units, and the part of the downlink time unit corresponds to the at least one uplink time unit.
The method of claim 9, wherein:

The part of the downlink time unit includes a downlink time unit numbered m-t3 among the multiple downlink time units, where m is the number of the at least one uplink time unit, where m is greater than or equal to t3, m, t3 Both are integers greater than or equal to 0.
A signal receiving device, characterized in that it comprises:

The communication unit is configured to receive the first indication information from the network device;

A processing unit, configured to determine, according to the first indication information, a part of the downlink time units used for receiving the downlink control channel among the multiple downlink time units;

The communication unit is further configured to receive a downlink control channel in at least one downlink time unit in the partial downlink time units.
The device according to claim 11, wherein:

The first indication information indicates the partial downlink time unit, where the partial downlink time unit includes an odd numbered downlink time unit among the multiple downlink time units, or the partial downlink time unit includes the The downstream time unit numbered as an even number among the multiple downstream time units.
The device according to claim 11 or 12, wherein:

The communication unit is further configured to receive second indication information from the network device in a first downlink time unit, where the second indication information is used to instruct to send uplink information to the network device in the first uplink time unit. Control channel, the first downlink time unit is a time unit in the partial downlink time units;

The second indication information is carried in the first search space, the first uplink time unit is an uplink time unit numbered n+t1; n is the number of the first downlink time unit;

The second indication information is carried in the second search space, and the first uplink time unit is an uplink time unit numbered n+t2, where n, t1, and t2 are integers greater than or equal to 0.
The device according to claim 11, wherein:

The first indication information indicates at least one uplink time unit used for sending an uplink control channel among the multiple uplink time units, and the part of the downlink time unit corresponds to the at least one uplink time unit.
The device of claim 14, wherein:

The part of the downlink time unit includes a downlink time unit numbered m-t3 among the multiple downlink time units, where m is the number of the at least one uplink time unit, where m is greater than or equal to t3, m, t3 Both are integers greater than or equal to 0.
A signal sending device, characterized in that it comprises:

A communication unit, configured to send first indication information to a terminal device, where the first indication information is used by the terminal device to determine a part of a plurality of downlink time units for receiving a downlink control channel;

The communication unit is further configured to send the downlink control channel to the terminal device in the partial downlink time unit.
The device of claim 16, wherein:

The first indication information indicates the partial downlink time unit, where the partial downlink time unit includes an odd numbered downlink time unit among the multiple downlink time units, or the partial downlink time unit includes the The downstream time unit numbered as an even number among the multiple downstream time units.
The device according to claim 16 or 17, characterized in that:

The communication unit is further configured to send second indication information to the terminal device in a first downlink time unit, where the second indication information is used to instruct the terminal device to send an uplink control channel in the first uplink time unit , The first downlink time unit is a time unit in the partial downlink time units;

The second indication information is carried in the first search space, the first uplink time unit is an uplink time unit numbered n+t1; n is the number of the first downlink time unit;

The second indication information is carried in the second search space, and the first uplink time unit is an uplink time unit numbered n+t2, where n, t1, and t2 are integers greater than or equal to 0.
The device of claim 16, wherein:

The first indication information indicates at least one uplink time unit used for sending an uplink control channel among the multiple uplink time units, and the part of the downlink time unit corresponds to the at least one uplink time unit.
The device of claim 19, wherein:

The part of the downlink time unit includes a downlink time unit numbered m-t3 among the multiple downlink time units, where m is the number of the at least one uplink time unit, where m is greater than or equal to t3, m, t3 Both are integers greater than or equal to 0.
A chip, characterized in that, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used to run a computer program or instruction to implement as claimed in claims 1-5 and 6. In the method of any one of -10, the communication interface is used to communicate with other modules outside the chip.
A computer-readable storage medium, the storage medium is used to store a computer program or instruction, when the computer program or instruction is executed, the computer executes any one of claims 1-5, 6-10 Methods.
A communication system, characterized by comprising: the signal receiving device according to any one of claims 11-15 and the signal sending device according to any one of claims 15-20.