CN110225588B

CN110225588B - Signal sending and receiving method and device

Info

Publication number: CN110225588B
Application number: CN201810176064.5A
Authority: CN
Inventors: 谢信乾; 郭志恒; 费永强; 毕文平
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-03-02
Filing date: 2018-03-02
Publication date: 2021-08-13
Anticipated expiration: 2038-03-02
Also published as: WO2019166028A1; CN110225588A

Abstract

In the method, a network device sends first indication information and second indication information to a terminal device, the first indication information is used for indicating the terminal device to send an uplink signal to the network device on a first time domain resource, the second indication information is used for indicating the terminal device not to send the uplink signal to the network device on a second time domain resource, and the terminal device can send the uplink signal to the network device on a third time domain resource after receiving the first indication information and the second indication information, wherein the third time domain resource is not overlapped with the second time domain resource, and the first time domain resource comprises the third time domain resource. By the method, time conflict can be avoided when the terminal equipment respectively sends the uplink signals on the two uplink carriers, and waste of uplink resources can be effectively reduced.

Description

Signal sending and receiving method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a signal transmission method and apparatus.

Background

In the next-generation communication system, the network device and the terminal device in a Time Division Duplex (TDD) mode may use an additional uplink carrier for uplink communication in addition to uplink and downlink communication using a TDD carrier. Among them, the additional uplink carrier may be referred to as an uplink Supplemental (SUL) carrier. At present, because the capability of the terminal device is limited, the terminal device generally cannot transmit the uplink signal by using the TDD carrier and the SUL carrier simultaneously in the same time period. For example, when the network device instructs the terminal device to transmit the first uplink signal by using the TDD carrier in the first time period and transmit the second uplink signal by using the SUL carrier in the second time period, if the first time period is the same as the second time period or partially overlaps with the second time period, the terminal device can only select to transmit one uplink signal on one carrier, which may cause a part of uplink time-frequency resources to be wasted.

Disclosure of Invention

The application provides a signal sending and receiving method and a device, which aim to avoid time conflict when terminal equipment respectively sends uplink signals on two uplink carriers as much as possible and fully utilize uplink resources as much as possible.

In a first aspect, a method for sending and receiving a signal is provided, where a network device may send first indication information and second indication information to a terminal device, where the first indication information is used to indicate the terminal device to send an uplink signal to the network device on a first time domain resource, and the second indication information is used to indicate the terminal device not to send the uplink signal to the network device on a second time domain resource. After receiving the first indication information and the second indication information, the terminal device may send an uplink signal to the network device on a third time domain resource. Wherein the third time domain resource is not overlapped with the second time domain resource, and the first time domain resource comprises the third time domain resource.

The method can be applied to a scenario that the terminal device sends uplink signals on two uplink carriers, when the network device schedules time domain resources on one uplink carrier, the network device can be instructed to send the uplink signals on the first time domain resources of the uplink carrier through the first instruction information, and if second time domain resources which conflict with time domain resources used for sending another uplink signal on another uplink carrier exist on the time domain resources of the uplink carrier, the network device can be instructed not to send the uplink signals on the second time domain resources through the second instruction information. The method and the device can avoid time conflict when the uplink signals are respectively sent on the two uplink carriers, can also make full use of uplink resources, and can effectively reduce the waste of the uplink resources compared with the prior art.

In one possible design, there may be an overlap between the first time domain resource and the second time domain resource. In this way, the terminal device may determine, according to the first indication information and the second indication information, the time domain resource overlapping with the second time domain resource in the first time domain resource, and may further determine that the time domain resource overlapping with the second time domain resource in the first time domain resource cannot be used for sending the uplink signal.

In a possible design, the first indication information and the second indication information may be included in the same downlink control information that is sent by the network device to the terminal device. Therefore, the terminal device can know which time domain resources can transmit the uplink signal through the first indication information, and can know which time domain resources can not transmit the uplink signal through the second downlink control information, so as to more accurately determine the time domain resources for transmitting the uplink signal.

In one possible design, the second indication information indicates that the second time domain resource is at least one symbol group of X symbol groups; or, the second indication information indicates that the second time domain resource is a symbol group other than the at least one symbol group in the X symbol groups; any one of the X symbol groups comprises at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol, and X is a positive integer. In this design, which symbol groups of the X symbol groups the second time domain resource is specifically designated may be directly or indirectly indicated by the second indication information.

The X symbol groups may be predefined in a protocol and configured to the network device and the terminal device, or may be indicated to the terminal device by the network device through signaling.

In one possible design, the X symbol groups include at least one of a first symbol group and a second symbol group, where the first symbol group includes orthogonal frequency division OFDM symbols having symbol index values of 3 to 6, respectively, and the second symbol group includes OFDM symbols having symbol index values of 7 to 10, respectively; or the X symbol groups include at least one of a third symbol group, a fourth symbol group, a fifth symbol group, a sixth symbol group, a seventh symbol group, and an eighth symbol group, where the third symbol group includes OFDM symbols having symbol index values of 1 to 3, the fourth symbol group includes OFDM symbols having symbol index values of 3 to 5, the fifth symbol group includes OFDM symbols having symbol index values of 5 to 6, the sixth symbol group includes OFDM symbols having symbol index values of 7 to 8, the seventh symbol group includes OFDM symbols having symbol index values of 8 to 10, and the eighth symbol group includes OFDM symbols having symbol index values of 10 to 12; or, the X symbol groups include at least one of the fourth symbol group, the fifth symbol group, the sixth symbol group, and the seventh symbol group; or, the X symbol groups include at least one of the fourth symbol group, the seventh symbol group, and a ninth symbol group, where the ninth symbol group includes OFDM symbols having symbol index values of 5 to 8, respectively.

In order to reduce the bit size required by the second indication information as much as possible, the number of the X symbol groups may be appropriately reduced on the premise of ensuring that the second indication information can relatively accurately indicate which time domain resources the terminal device cannot transmit the uplink signal on.

In a possible design, when the X symbol groups are indicated to the terminal device by the network device through signaling, the network device may send third indication information to the terminal device, where the third indication information may indicate index values of OFDM symbols included in the X symbol groups. In this way, after the terminal device receives the second indication information, the OFDM symbol included in the second time domain resource indicated by the second indication information can be accurately determined according to the symbol index value indicated by the third indication information, so that the uplink signal may not be transmitted on the OFDM symbol included in the second time domain resource.

In a second aspect, the present application provides a signal sending and receiving method, in the method, a network device may send, to a terminal device, indication information and first downlink control information, where the indication information indicates that the number of first type downlink control information received in a control resource set by the terminal device is N, the first type downlink control information is used for uplink scheduling, the first downlink control information belongs to the first type downlink control information, and N is an integer greater than 1. After receiving the indication information and the first downlink control information, the terminal device may detect the first downlink control information in the control resource set, where the terminal device may detect and receive the first downlink control information in the control resource set according to the indication information until the terminal device determines that the number of the first type of downlink control information received in the control resource set is N. And the terminal device may send an uplink signal to the network device on the time domain resource scheduled by the received first downlink control information.

The method can also be applied to a scenario that the terminal device sends uplink signals on two uplink carriers, and when the network device schedules time domain resources on one uplink carrier, the network device can send downlink control information for multiple times in one control resource set to indicate the time domain resources which can be used for sending the uplink signals in the uplink carrier by the terminal device, and indicate the number of downlink control information to be received, so that the terminal device can accurately obtain multiple pieces of downlink control information and determine the time domain resources scheduled by the downlink control information. Thereby indirectly instructing the terminal device not to transmit uplink signals on certain time domain resources in the uplink carrier. The method and the device can avoid time conflict when the uplink signals are respectively sent on the two uplink carriers, can also make full use of uplink resources, and can also effectively reduce the waste of the uplink resources compared with the prior art.

In one possible design, the indication information may be carried in the first downlink control information. Therefore, the first downlink control information can indicate the number of the downlink control information which needs to be received by the terminal equipment while scheduling the uplink time domain resource, and other signaling does not need to be added, so that the signaling overhead can be reduced.

In a possible design, the indication information may also be carried in second downlink control information, where the second downlink control information does not belong to the first type of downlink control information, or the second downlink control information belongs to the first type of downlink control information but has a format different from that of the first downlink control information. In this design, the network device may indicate in advance the number of downlink control information for uplink scheduling that the terminal device needs to receive in the control resource set before sending the downlink control information for uplink scheduling, so that the terminal device detects the downlink control information in the control resource set according to the indication of the network device.

In a possible design, the time domain resource scheduled by the first downlink control information may belong to the same time slot or the same subframe as the time domain resource scheduled by the second downlink control information.

In a third aspect, the present application provides a communication apparatus, where the communication apparatus has a function of implementing the network device according to the first aspect, and the function may be implemented by hardware, or may be implemented by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions. The modules may be software and/or hardware.

In a possible design, the communication apparatus includes a processing unit and a transceiver unit, and functions performed by the transmitting unit and the processing unit may correspond to steps performed by the network device according to the first aspect, which is not described herein again.

In another possible design, the communication apparatus includes a processor and a transceiver, and the processor may control the transceiver to send and receive signals to perform the method performed by the network device in the first aspect and any possible design of the first aspect.

In another possible design, the communication device may further include one or more memories for coupling with the processor, which stores computer program instructions and/or data necessary to implement the functions of the network apparatus as referred to in the first aspect above. The one or more memories may be integral with the processor or separate from the processor. The present application is not limited. The processor may execute the computer program instructions stored in the memory to perform the method performed by the network device of the first aspect described above and any possible design of the first aspect.

In a fourth aspect, the present application provides a communication apparatus, wherein the communication apparatus has a function of implementing the terminal device according to the first aspect, and the function may be implemented by hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions. The modules may be software and/or hardware.

In a possible design, the communication apparatus includes a processing unit and a transceiver unit, and functions performed by the transmitting unit and the processing unit may correspond to steps performed by the terminal device according to the first aspect, which is not described herein again.

In another possible design, the communication apparatus includes a processor and a transceiver, and the processor may control the transceiver to send and receive signals to implement the method performed by the terminal device in the first aspect and any possible design of the first aspect.

In another possible design, the communication device may further comprise one or more memories for coupling with the processor, which stores the necessary computer program instructions and/or data for implementing the functions of the terminal equipment according to the first aspect. The one or more memories may be integral with the processor or separate from the processor. The present application is not limited. The processor may execute the computer program instructions stored in the memory to perform the method performed by the terminal device according to the first aspect and any possible design of the first aspect.

In a fifth aspect, the present application provides a communication apparatus, wherein the communication apparatus has a function of implementing the network device according to the second aspect, and the function can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions. The modules may be software and/or hardware.

In a possible design, the communication apparatus includes a processing unit and a transceiver unit, and functions performed by the transmitting unit and the processing unit may correspond to steps performed by the network device according to the second aspect, which are not described herein again.

In another possible design, the communication apparatus includes a processor and a transceiver, and the processor may control the transceiver to transmit and receive signals to perform the method performed by the network device in the second aspect and any possible design of the second aspect.

In another possible design, the communication device may further include one or more memories for coupling with the processor, which stores the necessary computer program instructions and/or data to implement the functions of the network apparatus as referred to in the second aspect above. The one or more memories may be integral with the processor or separate from the processor. The present application is not limited. The processor may execute the computer program instructions stored in the memory to perform the method performed by the network device of the second aspect described above and any possible design of the second aspect.

In a sixth aspect, the present application provides a communication apparatus, wherein the communication apparatus has a function of implementing the terminal device according to the second aspect, and the function can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above-described functions. The modules may be software and/or hardware.

In a possible design, the communication apparatus includes a processing unit and a transceiver unit, and functions performed by the transmitting unit and the processing unit may correspond to steps performed by the terminal device according to the second aspect, which are not described herein again.

In another possible design, the communication apparatus includes a processor and a transceiver, and the processor may control the transceiver to transmit and receive signals to perform the method performed by the terminal device in the second aspect and any possible design of the second aspect.

In another possible design, the communication device may further comprise one or more memories for coupling with the processor, which stores the necessary computer program instructions and/or data for implementing the functions of the terminal equipment according to the second aspect. The one or more memories may be integral with the processor or separate from the processor. The present application is not limited. The processor may execute the computer program instructions stored in the memory to perform the method performed by the terminal device in the second aspect described above and in any possible design of the second aspect.

In a seventh aspect, the present application provides a communication system comprising the network device according to the first aspect and at least one terminal device according to the first aspect, or the communication system comprising the network device according to the second aspect and at least one terminal device according to the second aspect.

In an eighth aspect, the present application provides a chip, which can be connected to a memory, and is configured to read and execute a software program stored in the memory, so as to implement the method of the above aspects.

In a ninth aspect, the present application provides a computer storage medium having computer-readable instructions stored thereon which, when read and executed by a computer, cause the computer to perform the method of the above aspects.

In a tenth aspect, the present application also provides a computer program product comprising a software program which, when run on a computer, causes the computer to perform the method of the above aspects.

Drawings

Fig. 1 is a schematic diagram of a network architecture according to an embodiment of the present application;

fig. 2 is a first schematic diagram of time domain resources corresponding to two uplink carriers according to an embodiment of the present application;

fig. 3 is a schematic diagram two of time domain resources corresponding to two uplink carriers according to an embodiment of the present application;

fig. 4 is a schematic flowchart of a method for transmitting and receiving signals according to an embodiment of the present application;

fig. 5 is a schematic flowchart of a signal transmitting and receiving method according to a second embodiment of the present application;

fig. 6 is a schematic diagram of a network device scheduling time domain resources on an uplink carrier according to a second embodiment of the present application;

fig. 7 is a schematic flowchart of another signal transmission and reception method according to the second embodiment of the present application;

fig. 8 is a schematic structural diagram of a communication device 800 according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a communication device 900 according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a communication device 1000 according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a communication device 1100 according to an embodiment of the present disclosure.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more clear, the present application will be further described in detail with reference to the accompanying drawings.

Hereinafter, some terms in the embodiments of the present application are explained to facilitate understanding by those skilled in the art.

(1) A network device is a device in an access network that communicates with a terminal device over an air interface. The network device includes, but is not limited to, a Radio Access Network (RAN) device, such as a base station, specifically, the base station may refer to a base station in a Long Term Evolution (LTE) system or an evolved LTE system (LTE-advanced, LTE-a), such as a Node B (NB), an evolved Node B (eNB), or may also be a next generation Node B (gNB) in a fifth generation mobile communication technology (5G) new wireless (NR) system.

(2) A terminal device, which is a device providing voice and/or data connectivity to a user, may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices, drones or other processing devices connected to wireless modems, as well as various forms of User Equipment (UE), Mobile Stations (MS), terminals (terminal equipment), transmission and reception points (TRP or transmission point, TP), and the like.

(3) The first type of downlink control information, in this application, downlink control information having the same function or the same format is collectively referred to as first type of downlink control information. For example, when the downlink control information is classified according to functions, the downlink control information used for uplink scheduling may be collectively referred to as first-type downlink control information, or the downlink control information used for downlink scheduling may be collectively referred to as first-type downlink control information, or the like. For another example, when the downlink control information is classified according to the format, the downlink control information with the format (format) of 0 may be collectively referred to as the first type downlink control information, or the downlink control information with the format (format) of 1 may be collectively referred to as the first type downlink control information. It should be understood that the formats of the downlink control information having the same function may be the same or different.

(4) A control-resource set (CORESET) may be composed of several frequency domain resource blocks and Orthogonal Frequency Division Multiplexing (OFDM) symbols in several time domain resources. The control resource set may carry at least one downlink control information, and the functions of the downlink control information carried in the control resource set may be the same or different, and the formats of the downlink control information carried in the control resource set may be the same or different.

(5) The terms "system" and "network" in the embodiments of the present application may be used interchangeably; "a plurality" means two or more, and in view of this, a plurality may also be understood as "at least two" in the embodiments of the present application; "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone; and, unless stated to the contrary, the embodiments of the present application refer to the ordinal numbers "first", "second", etc., for distinguishing a plurality of objects, and do not limit the sequence, timing, priority, or importance of the plurality of objects.

In order to better understand the technical solutions provided in the embodiments of the present application, an application scenario of the embodiments of the present application is first described below.

Fig. 1 is a schematic diagram illustrating a network architecture provided in an embodiment of the present application, where the network architecture is applicable to an LTE system or an LTE-a system, and also applicable to a 5G NR system, and as a communication system evolves, the network architecture in the embodiment of the present application may also be applicable to other similar communication systems. The network architecture shown in fig. 1 includes network devices (e.g., base stations) and terminal devices. The terminal device may communicate with the network device for access to a wireless network or with other terminal devices via the network device. The process of sending the uplink signal to the network device by the terminal device is called uplink communication, and the process of sending the downlink signal to the terminal device by the network device is called downlink communication.

In the 5G NR system, supportable duplex modes include a Frequency Division Duplex (FDD) mode and a TDD mode. In the TDD mode, the network device and the terminal device may use an additional uplink carrier for uplink communication in addition to the TDD carrier for uplink and downlink communication. The additional uplink carrier is, for example, a SUL carrier. Generally, the subcarrier spacing of a TDD carrier is greater than that of an SUL carrier, which is the spacing of the center positions of two adjacent subcarriers. Accordingly, the length of one slot (slot) on the TDD carrier is smaller than the length of one slot on the SUL carrier. For example, referring to fig. 2, when the subcarrier spacing of the TDD carrier is 60KHz and the subcarrier spacing of the SUL carrier is 15KHz, slot #0A on the SUL carrier is equivalent to slot #0B to slot #3B on the TDD carrier, where slot #0A includes 14 OFDM symbols and corresponding symbol index values are 0 to 13, respectively.

At present, because the capability of the terminal device is limited, the terminal device generally cannot transmit the uplink signal by simultaneously using the TDD carrier and the SUL carrier on the same time domain resource. Therefore, in the prior art, when the network device instructs the terminal device to transmit the uplink signal using the TDD carrier and there is an overlapping time domain resource between the time domain resource used when the terminal device transmits the uplink signal using the SUL carrier, the terminal device can only select one type of carrier to transmit one type of uplink signal. For example, with reference to fig. 2, when the network device instructs the terminal device to transmit a Physical Uplink Control Channel (PUCCH) on slot #1B on the TDD carrier and a Physical Uplink Shared Channel (PUSCH) on slot #0A on the SUL carrier, since slot #1B overlaps with OFDM symbols having symbol index values of 3 to 6 in slot #0A, the terminal device can only select slot #1B on the TDD carrier to transmit the PUCCH, but not slot #0A on the SUL carrier to transmit the PUSCH. This will make other OFDM symbols except for OFDM symbols having symbol index values of 3 to 6 in slot #0A unavailable, resulting in a waste of uplink resources.

Moreover, even if the network device avoids the time domain resource overlapping with the time domain resource on the TDD carrier when scheduling the time domain resource on the SUL carrier, in the prior art, the terminal device can only receive one piece of scheduling information, such as downlink control information, for indicating which time domain resources the terminal device receives or transmits a wireless signal on, in one slot, and only can schedule a plurality of consecutive OFDM symbols in one slot, so that it is difficult for the network device to fully schedule the time domain resource on the SUL, and there is still a situation that the uplink resource is wasted. For example, with reference to fig. 2, when the network device schedules slot #1B on the TDD carrier and slot #1B is used for the terminal device to transmit PUCCH, if it is further required to schedule time domain resources in slot #0A on the SUL carrier and the scheduled time domain resources are used for the terminal device to transmit PUSCH, the network device may schedule only OFDM symbols with symbol index values 0 to 2 or OFDM symbols with symbol index values 7 to 13 in slot #0A in order to avoid OFDM symbols with symbol index values 3 to 6 overlapping with slot #1B in slot #0A, which may still have other OFDM symbols that cannot be utilized.

When the difference between the subcarrier spacing on the TDD carrier and the subcarrier spacing on the SUL carrier is larger, the time domain overlapping situation becomes more obvious, and the situation that the uplink resource is wasted becomes more serious. For example, referring to fig. 3, when the subcarrier spacing of the TDD carrier is 8 times the subcarrier spacing of the SUL carrier, for example, the subcarrier spacing of the TDD carrier is 120KHz and the subcarrier spacing of the SUL carrier is 15KHz, slot #0A on the SUL carrier is equivalent to slot #0B to slot #7B on the TDD carrier, where slot #0A includes 14 OFDM symbols and corresponding symbol index values are 0 to 13, respectively. Assuming that the network device instructs the terminal device to transmit PUCCH on slot #3B on the TDD carrier and PUSCH on slot #0A on the SUL carrier, since slot #3B overlaps with OFDM symbols with symbol index values of 5 to 6 in slot #0A, the terminal device can only select slot #3B on the TDD carrier to transmit PUCCH, but not slot #0A on the SUL carrier to transmit PUSCH. This will make other OFDM symbols in slot #0A than those having symbol index values of 5 to 6 unavailable. Even if the network device avoids the OFDM symbols with the symbol index values of 5 to 6 in the slot #0A when scheduling the time domain resources on the SUL carrier, only the OFDM symbols with the symbol index values of 0 to 4 or the OFDM symbols with the symbol index values of 7 to 13 in the slot #0A can be scheduled, almost half of the OFDM symbols in the slot #0A still cannot be used, and the uplink resources are wasted.

Based on this, embodiments of the present application provide a signal sending and receiving method and apparatus, so that uplink resources can be utilized as much as possible in the above application scenarios.

Referring to fig. 4, a method for transmitting and receiving signals according to an embodiment of the present application is shown. The method comprises the following description flow:

step 401: the network equipment sends first indication information and second indication information to the terminal equipment, wherein the first indication information is used for indicating the terminal equipment to send an uplink signal to the network equipment on a first time domain resource, and the second indication information is used for indicating the terminal equipment not to send the uplink signal to the network equipment on a second time domain resource.

Step 402: and the terminal equipment determines the time domain resources which can be used for sending the uplink signals and the time domain resources which cannot be used for sending the uplink signals according to the received first indication information and the second indication information.

Step 403: and the terminal equipment sends the uplink signal to the network equipment on the third time domain resource. Wherein the third time domain resource is not overlapped with the second time domain resource, and the first time domain resource comprises the third time domain resource.

It should be understood that step 403 in this application is an optional step, that is, after determining which time domain resources may be used for sending the uplink signal and which time domain resources may not be used for sending the uplink signal according to the first indication information and the second indication information, the terminal device may not send the uplink signal on the determined time domain resources that may be used for sending the uplink signal, and may determine whether to send the uplink signal according to actual requirements.

In this embodiment of the application, the first indication information and the second indication information may be included in the same downlink control information that is sent by the network device to the terminal device. The same downlink control information may be downlink control information for uplink scheduling. In the existing scheme, when a network device schedules an uplink resource for a terminal device, a terminal device may be instructed to send an uplink signal on a first time domain resource through first indication information included in downlink control information. It should be understood that, in practical application, the first indication information and the second indication information may also be respectively included in different downlink control information, and may be specifically configured according to actual requirements.

In the embodiment of the present application, there may be an overlap between the first time domain resource and the second time domain resource, or there may not be an overlap. When there is an overlap between the first time domain resource and the second time domain resource, the terminal device may determine, according to the first indication information and the second indication information, a time domain resource overlapping with the second time domain resource in the first time domain resource, and may further send the uplink signal on a time domain resource (for example, the third time domain resource) other than the time domain resource overlapping with the second time domain resource in the first time domain resource, instead of sending the uplink signal on the time domain resource overlapping with the second time domain resource in the first time domain resource.

The implementation manner of the terminal device not sending the uplink signal on the time domain resource overlapped with the second time domain resource in the first time domain resource may include puncturing, rate matching, and the like. The following takes 14 OFDM symbols in 1 slot of the first time domain resource and an OFDM symbol with a symbol index value of 3 as a time domain resource overlapped with the second time domain resource in the first time domain resource as an example.

In a possible implementation manner, the terminal device may generate uplink data according to 14 OFDM symbols, and assuming that the generated uplink data is 100 bits (bit), since the terminal device cannot transmit an uplink signal on an OFDM symbol with a symbol index value of 3, when the terminal device transmits the uplink signal on the slot, the terminal device may discard the uplink data originally prepared to be transmitted on the OFDM symbol with a symbol index value of 3, for example, 10-bit uplink data. This implementation may be referred to as puncturing.

In another possible implementation manner, the terminal device may generate uplink data according to 13 OFDM symbols except for the OFDM symbol with the symbol index value of 3, where the generated uplink data may be 90 bits, for example, and then the terminal device may send the 90-bit uplink data on the slot. This implementation may be referred to as rate matching.

In this embodiment of the application, the first time domain resource indicated in the first indication information may be a continuous OFDM symbol, and a specific indication method may refer to an existing scheme. Here, the manner in which the second indication information provided in the present application indicates the second time domain resource is mainly described.

Specifically, the second indication information may indicate that at least one symbol group in the X symbol groups cannot be used for sending the uplink signal, that is, directly indicate that at least one symbol group in the X symbol groups is the second time domain resource. Or, the second indication information may also indicate that at least one symbol group in the X symbol groups is available for transmitting an uplink signal, that is, indirectly indicate that the symbol groups other than the at least one symbol group in the X symbol groups are the second time domain resource. It should be understood that, in practical applications, the second indication information may not indicate the second time domain resource, that is, all the X symbol groups may be used for transmitting the uplink signal. Any symbol group in the X symbol groups may include at least one continuous OFDM symbol, and X is a positive integer. The division of the X symbol groups is first described below.

In this application, the first time domain resource, the second time domain resource, and the third time domain resource are assumed to be time domain resources on the first uplink carrier. The time domain resources on the first uplink carrier are divided into X symbol groups, which may be determined according to an overlapping condition of the time domain resources on the first uplink carrier and the time domain resources on the second uplink carrier. Specifically, the first uplink carrier in this application is, for example, an SUL carrier. The second uplink carrier is, for example, a TDD carrier.

The first condition is as follows: when the subcarrier spacing of the TDD carrier is 4 times the subcarrier spacing of the SUL carrier, for example, the subcarrier spacing of the TDD carrier shown in fig. 2 is 60KHz, the subcarrier spacing of the SUL carrier is 15KHz, and the overlapping condition between slot #0A on the SUL carrier and slot #0B to slot #3B on the TDD carrier is as follows:

the OFDM symbols with the symbol index values of 0 to 3 in the slot #0A are overlapped with the slot # 0B; for convenience of description, the OFDM symbols with symbol index values of 0 to 3 may be represented by symbols # {0,1,2,3}, where 0 to 3 are symbol index values for identifying the OFDM symbols, and what is referred to in the following description about symbol representation may also adopt the above representation manner, and is not described one by one.

The symbol # {3,4,5,6} in slot #0A overlaps slot # 1B;

the symbol # {7,8,9,10} in slot #0A overlaps slot # 2B;

the symbol # {10,11,12,13} in slot #0A overlaps slot # 3B.

In the first case, slot #0A on the SUL carrier may be divided into 4 symbol groups consisting of OFDM symbols. When the terminal device needs to send an uplink signal on slot #0B, the network device may schedule other OFDM symbols except for symbol # {0,1,2,3} in slot #0A for the terminal device in a scheduling manner, so that the terminal device sends another uplink signal. Or, when the terminal device needs to transmit an uplink signal on slot #3B, the network device may also schedule, in a scheduling manner, other OFDM symbols except for the symbol # {10,11,12,13} in slot #0A for the terminal device, so that the terminal device transmits another uplink signal. Therefore, for the symbol groups at two ends in the 4 symbol groups, respectively, the network device may implement that the terminal device does not transmit uplink signals on the symbol groups at two ends by scheduling uplink resources.

In the first example of the present application, X may take the value of 2, i.e. X symbol sets are defined as two symbol sets, respectively symbol # {3,4,5,6}, and symbol # {7,8,9,10 }. Further, the second indication information may indicate, when indicating whether at least one symbol group of the X symbol groups is available for transmitting an uplink signal, through a value of a bit in a field where the second indication information is located. In one implementation, the second indication information may be a field with two bits, each bit may correspond to a symbol group, and when a bit value is "1", it may characterize that the terminal device cannot transmit an uplink signal on the symbol group corresponding to the bit. And when a bit takes the value of "0", it can characterize that the terminal device determines whether to transmit the uplink signal on the symbol group corresponding to the bit according to the content indicated by the scheduling information when the network device schedules the uplink resource. That is, even if the bit takes the value of "0", the terminal device does not necessarily transmit the uplink signal on the symbol group corresponding to the bit, and needs to determine the uplink signal according to the content indicated by the scheduling information when the network device schedules the uplink resource. If the network device indicates the symbol group corresponding to the bit in the scheduling information (for example, downlink control information), the terminal device may subsequently transmit an uplink signal on the symbol group corresponding to the bit, and if the network device does not indicate the symbol group corresponding to the bit in the scheduling information, the terminal device may not transmit an uplink signal on the symbol group corresponding to the bit.

For example, when the field of the second indication information is "01", it may be characterized that the terminal device cannot transmit the uplink signal on the symbol # {3,4,5,6}, when the field of the second indication information is "10", it may be characterized that the terminal device cannot transmit the uplink signal on the symbol # {7,8,9,10}, and when the field of the second indication information is "11", it may be characterized that the terminal device cannot transmit the uplink signal on the symbol # {3,4,5,6} and the symbol # {7,8,9,10 }. Of course, in practical applications, the field of the second indication information is "00", which may characterize whether the terminal device determines whether to transmit the uplink signal on the symbol # {3,4,5,6} and the symbol # {7,8,9,10} according to the content indicated by the scheduling information when the network device schedules the uplink resource.

It should be understood that, when any one of the above-mentioned bits takes the value of "0" or "1", the corresponding meaning is only taken as an implementation provided in the present application, and in practical application, taking the value of "0" may also be defined as that the uplink signal cannot be transmitted on the symbol group corresponding to the bit, whereas, taking the value of "1" may be defined as that whether the uplink signal is transmitted on the symbol group corresponding to the bit is determined according to the content indicated by the scheduling information when the network device schedules the uplink resource.

The first example described above is applicable to the case where slot #0B to slot #3B are all uplink slots. In practical application, the slots #0B to #3B may not all be uplink slots, and some may be downlink slots. For example, slot #0B, slot #1B is a downlink slot and slot #2B, slot #3B is an uplink slot, or slot #0B, slot #1B is an uplink slot and slot #2B, slot #3B is a downlink slot. In this case, the division of the X symbol groups can be referred to a second example of the present application.

In a second example of the present application, X may take the value 1, i.e. X symbol groups are one symbol group, e.g. the symbol # {3,4,5,6}, or the symbol # {7,8,9,10 }. In this case, the second indication information may be a field with one bit, for example, when the field of the second indication information is "1", it may be characterized that the terminal device cannot transmit the uplink signal on the symbol # {3,4,5,6} or the symbol # {7,8,9,10 }. When the field of the second indication information is "0", the terminal device further needs to determine whether to transmit the uplink signal on the symbol # {3,4,5,6} or the symbol # {7,8,9,10} according to the content indicated by the scheduling information when the network device schedules the uplink resource.

Case two: when the subcarrier spacing of the TDD carrier is 8 times the subcarrier spacing of the SUL carrier, for example, the subcarrier spacing of the TDD carrier shown in fig. 3 is 120KHz, the subcarrier spacing of the SUL carrier is 15KHz, and the overlapping condition between slot #0A on the SUL carrier and slot #0B to slot #7B on the TDD carrier is as follows:

the symbol # {0,1} in slot #0A overlaps slot # 0B;

the symbol # {1,2,3} in slot #0A overlaps slot # 1B;

the symbol # {3,4,5} in slot #0A overlaps slot # 2B;

the symbol # {5,6} in slot #0A overlaps slot # 3B;

the symbol # {7,8} in slot #0A overlaps slot # 4B;

the symbol # {8,9,10} in slot #0A overlaps slot # 5B;

the symbol # {10,11,12} in slot #0A overlaps slot # 6B;

the symbol # {12,13} in slot #0A overlaps slot # 7B.

In the second case, slot #0A on the SUL carrier may be divided into 8 symbol groups consisting of OFDM symbols. In the same manner as the above case one, for the symbol groups at both ends in the 8 symbol groups, the network device may implement that the terminal device does not transmit the uplink signal on the symbol groups at both ends by scheduling the uplink resource.

In the third example of the present application, X may take the value 6, i.e. X symbol sets are defined as six symbol sets, symbol # {1,2,3}, symbol # {3,4,5}, symbol # {5,6}, symbol # {7,8}, symbol # {8,9,10}, symbol # {10,11,12}, respectively. At this time, the second indication information may be a field of six bits, each bit may correspond to one symbol group, for example, when an ith bit in the six bits takes a value of "0", it may characterize that the terminal device is capable of transmitting an uplink signal on the symbol group corresponding to the ith bit, when the bit takes a value of "1", it may characterize that the terminal device determines whether to transmit the uplink signal on the symbol group corresponding to the bit according to content indicated by the scheduling information when the network device schedules the uplink resource, and i is a positive integer less than or equal to X.

In the fourth example of the present application, in order to reduce the bit size required for the second indication information as much as possible, X may take a value of 4, i.e., X symbol groups are defined as four symbol groups, such as symbol # {3,4,5}, symbol # {5,6}, symbol # {7,8}, and symbol # {8,9,10 }. At this time, the second indication information may be a field with four bits, and the meaning represented by the value of each bit may be referred to in the above description, which is not described one by one here. In contrast, in the present example, if the terminal device needs to transmit the uplink signal on slot #0B, in the defining manner of this example, the network device may enable the terminal device not to transmit the uplink signal on symbol # {0,1,2,3} in a scheduling manner, and in the defining manner of the third example, the network device may enable the terminal device not to transmit the uplink signal on symbol # {0,1,2} in a scheduling manner, which only wastes symbol #3, but can save two bit fields.

Of course, in practical applications, the number of X symbol groups may be further reduced in order to reduce the bit size required for the second indication information as much as possible. For example, X symbol groups are defined as three symbol groups, for example, symbol # {3,4,5}, symbol # {5,6,7,8}, and symbol # {8,9,10}, and in this case, the second indication information may be a three-bit field.

The third example and the fourth example described above are applicable to the case where slot #0B to slot #7B are all uplink slots. In practical application, the slots #0B to #7B may not all be uplink slots, and some may be downlink slots. For example, slot #0B to slot #3B are downlink slots, and slot #4B to slot #7B are uplink slots, or slot #0B to slot #3B are uplink slots, and slot #4B to slot #7B are downlink slots. In this case, the division of the X symbol groups can be referred to as a fifth example of the present application.

In a fifth example of the present application, X may take a value of 2, i.e. X symbol sets are two symbol sets, e.g. symbol # {1,2,3}, symbol # {3,4,5}, or, e.g. symbol # {8,9,10}, symbol # {10,11,12 }. At this time, the second indication information may be a field with two bits, and the meaning represented by the value of each bit may be referred to in the above description, which is not described one by one here.

The specific division of the X symbol groups is given in the above five examples. In a specific implementation, the X symbol groups may be predefined in a protocol and configured to the network device and the terminal device, or may be indicated to the terminal device by the network device through signaling. When the network device indicates the terminal device through signaling, the network device may send third indication information to the terminal device, where the third indication information may indicate an index value of an OFDM symbol included in the X symbol groups. In this way, after the terminal device receives the second indication information, the OFDM symbol included in the second time domain resource indicated by the second indication information may be determined according to the symbol index value indicated by the third indication information.

The method provided in the first embodiment of the present application is exemplified below with reference to specific application scenarios. It should be noted that, in the embodiment of the present application, an application scenario in which only one uplink carrier is a TDD carrier and another uplink carrier is an SUL carrier is taken as an example to describe the scheme provided in the present application. In practical applications, the types of the two uplink carriers may not be limited to the TDD carrier and the SUL carrier. Furthermore, the embodiment of the present application is not limited to a scenario in which two uplink carriers are configured, and may also be applied to an application scenario in which more than two uplink carriers are configured, or may be applied to an application scenario in which only one uplink carrier is configured.

The application scene one: the subcarrier spacing for the TDD carrier is 60KHz, and the subcarrier spacing for the SUL carrier is 15 KHz.

As shown in fig. 2, it is assumed that the network device schedules slot #1B on a TDD carrier, and slot #1B is used for the terminal device to transmit a PUCCH, then when the network device schedules time domain resources on a SUL carrier, and the scheduled time domain resources are used for the terminal device to transmit a PUSCH, the network device may transmit downlink control information for uplink scheduling to the terminal device, where the downlink control information includes first indication information and second indication information. The first indication information may indicate that the terminal device transmits the PUSCH on slot #0A, the second indication information may indicate that the terminal device does not transmit the PUSCH on symbol # {3,4,5,6} in slot #0A, and the terminal device may determine to transmit the PUSCH on an OFDM symbol other than symbol # {3,4,5,6} in slot #0A according to the first indication information and the second indication information. Therefore, other OFDM symbols on the slot #0A can be fully utilized, and the utilization rate of uplink resources is improved.

Application scenario two: the subcarrier spacing for the TDD carrier is 120KHz and the subcarrier spacing for the SUL carrier is 15 KHz.

As shown in fig. 3, it is assumed that the network device schedules slot #3B on a TDD carrier, and slot #3B is used for the terminal device to transmit a PUCCH, then when the network device schedules time domain resources on a SUL carrier, and the scheduled time domain resources are used for the terminal device to transmit a PUSCH, the network device may transmit downlink control information for uplink scheduling to the terminal device, where the downlink control information includes first indication information and second indication information. The first indication information may indicate that the terminal device transmits the PUSCH on slot #0A, the second indication information may indicate that the terminal device does not transmit the PUSCH on symbol # {5,6} in slot #0A, and the terminal device may determine to transmit the PUSCH on an OFDM symbol other than symbol # {5,6} in slot #0A according to the first indication information and the second indication information. Therefore, other OFDM symbols on the slot #0A can be fully utilized, and the utilization rate of uplink resources is improved.

Therefore, in the first embodiment of the present application, if the terminal device can send the uplink signal on two uplink carriers, when the network device schedules the time domain resource on one uplink carrier, the network device may instruct the terminal device to send the uplink signal on the first time domain resource of the uplink carrier through the first indication information, and if a second time domain resource which conflicts with a time domain resource used for sending another uplink signal on another uplink carrier exists on the time domain resource of the uplink carrier, the network device may instruct the terminal device not to send the uplink signal on the second time domain resource through the second indication information. The method and the device can avoid time conflict when the uplink signals are respectively sent on the two uplink carriers, can also make full use of uplink resources, and can effectively reduce the waste of the uplink resources compared with the prior art.

Considering that the network device may schedule consecutive OFDM symbols and instruct the terminal device to transmit uplink signals on the consecutive OFDM symbols through the downlink control information, the present application provides another embodiment, where the network device may transmit multiple times of the downlink control information, where each downlink control information indicates a time domain resource used for the terminal device to transmit uplink signals, and a time domain resource that is not indicated by the downlink control information may be regarded as a time domain resource that is not used to transmit uplink signals, so that the network device may indirectly instruct the terminal device not to transmit uplink signals on some time domain resources, thereby also avoiding time collision when uplink signals are respectively transmitted on two uplink carriers, and being able to fully utilize the uplink resources. The specific implementation will be described in detail below.

Referring to fig. 5, a method for transmitting and receiving signals according to a second embodiment of the present application is shown. The method comprises the following description flow:

step 501: the network equipment sends indication information and first downlink control information to the terminal equipment, wherein the indication information indicates that the number of first downlink control information received by the terminal equipment in a control resource set is N, the first downlink control information is used for uplink scheduling, the first downlink control information belongs to the first downlink control information, and N is a positive integer.

The first type of downlink control information may be a type of downlink control information for uplink scheduling. The first downlink control information belongs to the first type of downlink control information, and may be understood as downlink control information for uplink scheduling. Alternatively, the first type of downlink control information may be a type of downlink control information in a first format for uplink scheduling. Then, the first downlink control information belongs to the first type of downlink control information, and may be understood as the first downlink control information being downlink control information for uplink scheduling and being in a first format. The first format is, for example, format0_0 or format0_ 1 in the NR system.

Step 502: and the terminal equipment detects and receives the first downlink control information in the control resource set until the terminal equipment determines that the number of the first type of downlink control information received in the control resource set is N.

Step 503: and the terminal equipment sends an uplink signal to the network equipment on the time domain resource scheduled by the first downlink control information.

In the embodiment of the present application, in order to solve the problem of time collision when uplink signals are transmitted on two uplink carriers respectively and the problem that uplink resources are difficult to be fully utilized, N may be defined as an integer greater than 1. In this way, the network device may indirectly instruct the terminal device not to transmit uplink signals on certain time domain resources by transmitting a plurality of first downlink control information in the control resource set.

Since the terminal device usually stops blind detection of the downlink control information after receiving one downlink control information at present, it is difficult for the terminal device to acquire a plurality of downlink control information. Therefore, in this embodiment of the present application, the network device may instruct the terminal device to receive the number of the first type of downlink control information in the control resource set, so that the terminal device knows the number of the downlink control information that needs to be received in the control resource set. In this way, the terminal device may continuously perform blind detection on the first type of downlink control information in the control resource set until the terminal device determines that the number of the first type of downlink control information received in the control resource set is N. It should be understood that, when the indication information indicates that the number of the first type downlink control information received by the terminal device in the control resource set is N, the terminal device expects to receive N first type downlink control information in the control resource set. However, in practical application, the terminal device may not necessarily receive all downlink control information that is sent by the network device and meets the condition of the first type of downlink control information, and may not necessarily send uplink signals on the time domain resources scheduled by all the received downlink control information.

In the embodiment of the present application, the indication information sent by the network device to the terminal device may be carried in the downlink control information.

In an example of the present application, the indication information may be carried in the first downlink control information. In this example, the network device may instruct, through the first downlink control information, the terminal device to transmit the uplink signal on which time domain resources, and instruct the terminal device to receive the number of the first type of downlink control information in the control resource set. Correspondingly, when the terminal device receives a first downlink control message, whether the number of the currently received first type of downlink control messages meets the requirement or not can be determined according to the indication information, if yes, the detection of the first downlink control message is stopped, and if not, the detection of the first downlink control message is continued.

Specifically, the first downlink control information may be sent to the terminal device by the network device in the time slot n, and the indication information carried in the first downlink control information may be used to indicate the number of the first type of downlink control information that needs to be received by the terminal device in the time slot n. And, the first downlink control information may schedule an OFDM symbol in a time slot n + k, so as to instruct the terminal device to transmit an uplink signal on the OFDM symbol in the time slot n + k, where n and k are positive integers.

In the above example, the indication information may be directly carried in the first downlink control information in the control resource set, where the first downlink control information may not only schedule the uplink time domain resource, but also indicate the number of downlink control information that needs to be received by the terminal device, and no additional signaling is needed to be added for sending the indication information, so that signaling overhead may be reduced.

In another example of the present application, the network device may send, to the terminal device, second downlink control information before sending the first downlink control information to the terminal device, where the second downlink control information includes the indication information. In this example, the second downlink control information may or may not belong to the first type of downlink control information. That is, the second downlink control information may be downlink control information for uplink scheduling or downlink control information for downlink scheduling. When the second downlink control information is downlink control information for uplink scheduling, the format of the second downlink control information may also be different from the format of the first downlink control information.

Specifically, when the second downlink control information is sent to the terminal device by the network device in the time slot n, the indication information carried in the second downlink control information may be used to indicate the number of the first type of downlink control information that needs to be received by the terminal device in the time slot n, or may be used to indicate the number of the first type of downlink control information that needs to be received by the terminal device in the time slot n + k 1.

And, the time domain resource scheduled by the second downlink control information and the time domain resource scheduled by the first downlink control information may belong to the same time slot or belong to the same subframe. For example, when the second downlink control information is used for uplink scheduling, the second downlink control information and the first downlink control information may each schedule an OFDM symbol in a slot n + k2 so as to instruct the terminal device to transmit an uplink signal on the OFDM symbol in a slot n + k2, where n, k1, and k2 are all positive integers, and k1 is less than k 2.

In this embodiment of the present application, the indication information may be a field with M bits, where M is a positive integer. For example, when M is equal to 1, if the field in which the indication information is located is "0", the number of the terminal device that is instructed to receive the first type downlink control information in the control resource set may be 1, and if the field in which the indication information is located is "1", the number of the terminal device that is instructed to receive the first type downlink control information in the control resource set may be 2. Of course, in practical applications, M may be an integer greater than 1. For example, when M is 2, the indication information may indicate that the number of the terminal devices receiving the first type downlink control information in the control resource set is 4 at most.

Next, taking the indication information carried in the second downlink control information as an example, a second embodiment of the present application will be described with reference to a specific application scenario.

Referring to fig. 6, the subcarrier spacing of the TDD carrier is 60KHz, and the subcarrier spacing of the SUL carrier is 15KHz, where the overlapping condition between slot #0A on the SUL carrier and slot #0B to slot #7B on the TDD carrier can be referred to in the related description of the first embodiment.

Assuming that the network device schedules slot #1B on a TDD carrier and slot #1B is used for the terminal device to transmit a PUCCH, the network device may first transmit downlink control information a to the terminal device before scheduling a time domain resource on an SUL carrier and the scheduled time domain resource is used for the terminal device to transmit a PUSCH, where the downlink control information a includes indication information, and here, taking a field whose indication information is 1 bit and whose value is "1" as an example, the indication information may indicate that the terminal device receives 2 pieces of first-type downlink control information in a control resource set. Here, for example, the downlink control information a is used for uplink scheduling, but does not belong to the first type of downlink control information, for example, the first type of downlink control information may be defined as a type of downlink control information with a format of format0_0 used for uplink scheduling, and the downlink control information a is used for uplink scheduling and with a format of format0_ 1. After receiving the downlink control information a, the terminal device may determine that 2 pieces of downlink control information, which are used for uplink scheduling and have a format of format0_0, need to be received in the control resource set.

Further, the network device may send downlink control information B to the terminal device in the control resource set, where it is assumed that the downlink control information B is used for uplink scheduling and has a format of format0_0, and the downlink control information B sent this time schedules symbol # {0,1,2} in slot #0A (the shaded portion in fig. 6). After receiving the downlink control information B, the terminal device may determine that the symbol # {0,1,2} in slot #0A may be used for sending the PUSCH, and may determine, according to the indication information carried in the downlink control information a, that the downlink control information in the format of format0_0 and used for uplink scheduling still needs to be detected in the control resource set.

Further, the network device may send downlink control information C to the terminal device in the control resource set, where it is assumed that the downlink control information C is used for uplink scheduling and has a format of format0_0, and the symbol # {7,8,9,10,11,12,13} in slot #0A is scheduled in the downlink control information C sent this time (the shaded portion in fig. 6). After receiving the downlink control information C, the terminal device may determine that the symbol # {7,8,9,10,11,12,13} in the slot #0A may be used to send the PUSCH, and may determine that the received downlink control information, which is used for uplink scheduling and has the format of format0_0, has satisfied 2 according to the indication information carried in the downlink control information a, and then the terminal device stops detecting the downlink control information in the control resource set.

To this end, the network device may indirectly indicate that OFDM symbols in slot #0A that collide with slot #1B are not available for transmitting PUSCH. Subsequently, the terminal device may send PUSCH to the network device on the OFDM symbols respectively scheduled by the downlink control information B and C.

When the indication information is carried in the first downlink control information, reference may be made to still another method for transmitting and receiving signals provided in embodiment two of the present application shown in fig. 7. The method comprises the following description flow:

step 701: the network equipment sends first downlink control information to the terminal equipment, wherein the first downlink control information comprises indication information, the indication information indicates that the number of first downlink control information received by the terminal equipment in a control resource set is N, the first downlink control information is used for uplink scheduling, the first downlink control information belongs to the first downlink control information, and N is a positive integer.

Step 702: and the terminal equipment detects and receives the first downlink control information in the control resource set until the terminal equipment determines that the number of the first type of downlink control information received in the control resource set is N.

Step 703: and the terminal equipment sends an uplink signal to the network equipment on the time domain resource scheduled by the first downlink control information.

For the relevant description in the above steps 701 to 703, reference may be made to the description related to the previous embodiment, and details are not described here. By carrying the indication information in the first downlink control information, the number of downlink control information which needs to be received by the terminal equipment can be indicated while the scheduled uplink time domain resource is indicated to the terminal equipment, and no other signaling needs to be added for sending the indication information, so that the effect of reducing signaling overhead can be achieved.

Next, taking the example that the indication information is carried in the first downlink control information, a second embodiment of the present application will be described with reference to a specific application scenario.

Continuing with fig. 6, the subcarrier spacing of the TDD carrier is 60KHz, and the subcarrier spacing of the SUL carrier is 15KHz, where the overlap between slot #0A on the SUL carrier and slot #0B to slot #7B on the TDD carrier can be referred to in the description related to the first embodiment. Assuming that the network device schedules slot #1B on a TDD carrier and slot #1B is used for the terminal device to transmit a PUCCH, when the network device schedules time domain resources on an SUL carrier and the scheduled time domain resources are used for the terminal device to transmit a PUSCH, the network device may transmit downlink control information a to the terminal device, where the downlink control information a schedules symbol # {0,1,2} in slot #0A (a shaded portion shown in fig. 6), and the downlink control information a includes indication information. Here, taking a field with 1 bit of indication information and taking the value as "1" as an example, the indication information is used to indicate that the number of the first type of downlink control information received by the terminal device in the control resource set is 2, where the first type of downlink control information may be defined as a type of downlink control information used for uplink scheduling and having a format of format0_ 0.

Assuming that the downlink control information a is used for uplink scheduling and has a format of format0_0, after receiving the downlink control information a, the terminal device may determine that the symbol # {0,1,2} in slot #0A may be used for transmitting the PUSCH, and may determine that it is further necessary to continue to detect the downlink control information having a format of format0_0 and used for uplink scheduling in the control resource set.

Further, the network device may send downlink control information B to the terminal device in the control resource set, where the downlink control information B schedules symbol # {7,8,9,10,11,12, and 13} in slot #0A (the shaded portion in fig. 6), and the downlink control information B also includes the above-mentioned indication information. Assuming that the downlink control information B is used for uplink scheduling and has the format of format0_0, after receiving the downlink control information B, the terminal device may determine that the symbol # {7,8,9,10,11,12,13} in slot #0A may be used for sending the PUSCH, and may determine that the received downlink control information used for uplink scheduling and having the format of format0_0 has satisfied 2, and then the terminal device stops detecting the downlink control information in the control resource set.

To this end, the network device may indirectly indicate that OFDM symbols in slot #0A that collide with slot #1B are not available for transmitting PUSCH. Subsequently, the terminal device may send PUSCH to the network device on the OFDM symbols respectively scheduled by the downlink control information a and B.

In addition, the second embodiment of the present application may also be applied to a scenario that the subcarrier spacing of the TDD carrier is 8 times that of the SUL carrier, for example, the subcarrier spacing of the TDD carrier is 120KHz and the subcarrier spacing of the SUL carrier is 15KHz, and the specific implementation process may refer to the above description, which is not described in detail herein.

Therefore, in the second embodiment of the present application, if the terminal device can send uplink signals on two uplink carriers, when the network device schedules time domain resources on one uplink carrier, the network device may send multiple downlink control information in a control resource set to indicate time domain resources that the terminal device can use to send uplink signals in the uplink carrier, and indicate the number of downlink control information that needs to be received, so that the terminal device can accurately obtain the downlink control information and determine the time domain resources scheduled by the downlink control information. Thereby indirectly instructing the terminal device not to transmit uplink signals on certain time domain resources in the uplink carrier. The method and the device can avoid time conflict when the uplink signals are respectively sent on the two uplink carriers, can also make full use of uplink resources, and can also effectively reduce the waste of the uplink resources compared with the prior art.

Hereinafter, a communication apparatus according to an embodiment of the present application will be described with reference to the accompanying drawings based on the same technical concept.

The embodiment of the present application provides a communication apparatus, which has corresponding functions for implementing the network device (e.g., base station) related to the above method embodiments. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions. The modules may be software and/or hardware.

Fig. 8 shows a schematic structural diagram of a communication apparatus 800 according to an embodiment of the present application, where the apparatus 800 includes a processor 801 and a transceiver 802. Wherein the processor 801 is configured to support a network device to perform the functions involved in the above method embodiments. The transceiver 802 is configured to support messaging functions of network devices. The apparatus 800 may further include a memory 803, wherein the processor 801, the transceiver 802 and the memory 803 are connected, the memory 803 is configured to store computer program instructions necessary for implementing the functions of the network device involved in the foregoing method embodiments, and the processor 801 is configured to execute the computer program instructions stored in the memory 803 to control the transceiver 802 to send and receive signals, so as to complete the steps of the network device in the foregoing method embodiments for implementing the corresponding functions.

In one possible design, the processor 801 is configured to control the transceiver 802 to send first indication information and second indication information to a terminal device, where the first indication information is used to instruct the terminal device to send an uplink signal to the apparatus 800 on a first time domain resource, and the second indication information is used to instruct the terminal device not to send the uplink signal to the apparatus 800 on a second time domain resource. Further, the processor 801 is further configured to control the transceiver 802 to receive the uplink signal from the terminal device on a third time domain resource, where the third time domain resource is not overlapped with the second time domain resource, and the first time domain resource includes the third time domain resource.

The specific steps executed by the processor 801 and the transceiver 802 can be referred to the related description of the steps involved in the network device of the above method embodiment, and are not described in detail here.

In another possible design, the processor 801 is configured to control the transceiver 802 to send, to a terminal device, indication information indicating that the number of first types of downlink control information received by the terminal device in a control resource set is N, where the first types of downlink control information are used for uplink scheduling, and N is an integer greater than 1. Further, the processor 801 is further configured to control the transceiver 802 to receive an uplink signal sent by the terminal device on the time domain resource scheduled by the first downlink control information.

The specific steps executed by the processor 801 and the transceiver 802 can be referred to the related description of the steps involved in the second network device of the above method embodiments, and are not described in detail here.

The apparatus 800 may also be implemented by a logic unit, and fig. 9 illustrates a schematic structural diagram of a communication apparatus 900 according to an embodiment of the present application, where the apparatus 900 includes a processing unit 901 and a transceiver unit 902. The processing unit 901 corresponds to the processor 801 in the apparatus 800, and the transceiver unit 902 corresponds to the transceiver 802 in the apparatus 800, which may be respectively configured to implement corresponding functions of network devices related to the foregoing method embodiments, and specific implementation processes may refer to the foregoing method embodiments and related descriptions in the apparatus 900, and are not described herein again.

The embodiment of the application also provides a communication device, and the device has the corresponding functions of the terminal equipment for realizing the method embodiment. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more modules corresponding to the above-described functions. The modules may be software and/or hardware.

Fig. 10 shows a schematic structural diagram of a communication device 1000 according to an embodiment of the present application, where the device 1000 includes a processor 1001 and a transceiver 1002. Wherein the processor 1001 is configured to support the terminal device to execute the functions involved in the above method embodiments. The transceiver 1002 is configured to support messaging functions for end-point devices. The apparatus 1000 may also include a memory 1003. Wherein, the processor 1001, the transceiver 1002 and the memory 1003 are connected, the memory 1003 is used for storing computer program instructions necessary for implementing the functions of the terminal device involved in the above method embodiments, and the processor 1001 is used for executing the computer program instructions stored in the memory 1003 to control the transceiver 1002 to transmit and receive signals, so as to complete the steps of the terminal device in the above method embodiments for executing the corresponding functions.

In one possible design, the processor 1001 is configured to control the transceiver 1002 to receive first indication information and second indication information from a network device, where the first indication information is used to instruct the apparatus 1000 to transmit an uplink signal to the network device on a first time domain resource, and the second indication information is used to instruct the apparatus 1000 not to transmit the uplink signal to the network device on a second time domain resource. Further, the processor 1001 is further configured to control the transceiver 1002 to send the uplink signal to the network device on a third time domain resource, where the third time domain resource is not overlapped with the second time domain resource, and the first time domain resource includes the third time domain resource.

The specific steps executed by the processor 1001 and the transceiver 1002 can be referred to the related description of the steps involved in the terminal device of the above method embodiments, and are not described in detail here.

In another possible design, the processor 1001 is configured to control the transceiver 1002 to receive indication information from a network device and first downlink control information, where the indication information indicates that the number of first type downlink control information received by the apparatus 1000 in a control resource set is N, the first type downlink control information is used for uplink scheduling, the first downlink control information belongs to the first type downlink control information, and N is an integer greater than 1. Further, the processor 1001 is further configured to control the transceiver 1002 to transmit an uplink signal to the network device on the time domain resource scheduled by the first downlink control information.

The specific steps executed by the processor 1001 and the transceiver 1002 can be referred to the related description in the steps related to the second terminal device of the above method embodiments, and are not described in detail here.

The apparatus 1000 may also be implemented by a logic unit, and fig. 11 shows a schematic structural diagram of a communication apparatus 1000 according to an embodiment of the present application, where the apparatus 1100 includes a processing unit 1101 and a transceiver unit 1102. The processing unit 1101 corresponds to the processor 1001 described in the apparatus 1000, and the transceiver unit 1102 corresponds to the transceiver 1002 described in the apparatus 1000, and may be respectively configured to implement corresponding functions of the network device related to the foregoing method embodiment, and for a specific implementation process, reference may be made to the foregoing method embodiment and related descriptions in the apparatus 1000, which is not described herein again.

It is understood that the drawings of the embodiments of the present application only show simplified designs of network devices and terminal devices. In practical applications, the network device and the terminal device are not limited to the above structures, and may further include an antenna array, a duplexer, and a baseband processing section, for example.

It should be noted that the processor referred to in the embodiments of the present application may be a Central Processing Unit (CPU), a general purpose processor, a Digital Signal Processor (DSP), an application-specific integrated circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic devices, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. A processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a DSP and a microprocessor, or the like. Wherein the memory may be integrated in the processor or may be provided separately from the processor.

According to the method provided by the embodiment of the present application, an embodiment of the present application further provides a communication system, which includes the above network device and at least one terminal device.

The embodiment of the present application further provides a chip, where the chip may be connected to a memory, and is configured to read and execute a software program stored in the memory, so as to implement any one of the methods related to the terminal device or the network device.

The embodiment of the present application further provides a computer storage medium, which is used for storing computer-readable instructions, and when a computer reads and executes the computer-readable instructions, any method related to the terminal device or the network device may be completed.

Embodiments of the present application further provide a computer program product including a software program, which, when running on a computer, causes the computer to execute any one of the methods related to the terminal device or the network device.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A signal receiving method, comprising:

the method comprises the steps that network equipment sends first indication information and second indication information to terminal equipment, wherein the first indication information is used for indicating the terminal equipment to send an uplink signal to the network equipment on a first time domain resource, and the second indication information is used for indicating the terminal equipment not to send the uplink signal to the network equipment on a second time domain resource;

and the network equipment receives the uplink signal from the terminal equipment on a third time domain resource, wherein the third time domain resource is not overlapped with the second time domain resource, and the first time domain resource comprises the third time domain resource.

2. The method of claim 1, wherein the first indication information and the second indication information are included in a same downlink control information sent by the network device to the terminal device.

3. The method of claim 1, wherein there is an overlap between the second time domain resource and the first time domain resource.

4. The method of any of claims 1 to 3, wherein the second indication information indicates that the second time domain resource is at least one of a group of X symbols; or, the second indication information indicates that the second time domain resource is a symbol group other than the at least one symbol group in the X symbol groups; any one of the X symbol groups comprises at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol, and X is a positive integer.

5. The method of claim 4, wherein the X symbol groups include at least one of a first symbol group and a second symbol group, wherein the first symbol group includes orthogonal frequency division OFDM symbols having symbol index values of 3 to 6, respectively, and the second symbol group includes OFDM symbols having symbol index values of 7 to 10, respectively; or,

the X symbol groups include at least one of a third symbol group, a fourth symbol group, a fifth symbol group, a sixth symbol group, a seventh symbol group, and an eighth symbol group, where the third symbol group includes OFDM symbols having symbol index values of 1 to 3, respectively, the fourth symbol group includes OFDM symbols having symbol index values of 3 to 5, the fifth symbol group includes OFDM symbols having symbol index values of 5 to 6, the sixth symbol group includes OFDM symbols having symbol index values of 7 to 8, respectively, the seventh symbol group includes OFDM symbols having symbol index values of 8 to 10, respectively, and the eighth symbol group includes OFDM symbols having symbol index values of 10 to 12, respectively; or,

the X symbol groups include at least one of the fourth symbol group, the fifth symbol group, the sixth symbol group, and the seventh symbol group; or,

the X symbol groups include at least one of the fourth symbol group, the seventh symbol group, and a ninth symbol group, wherein the ninth symbol group includes OFDM symbols having symbol index values of 5 to 8, respectively.

6. The method of claim 5, wherein the method further comprises:

and the network equipment sends third indication information to the terminal equipment, wherein the third indication information indicates the index values of the OFDM symbols contained in the X symbol groups.

7. A signal transmission method, comprising:

a terminal device receives first indication information and second indication information from a network device, wherein the first indication information is used for indicating the terminal device to send an uplink signal to the network device on a first time domain resource, and the second indication information is used for indicating the terminal device not to send the uplink signal to the network device on a second time domain resource;

and the terminal equipment sends the uplink signal to the network equipment on a third time domain resource, wherein the third time domain resource is not overlapped with the second time domain resource, and the first time domain resource comprises the third time domain resource.

8. The method of claim 7, wherein the first indication information and the second indication information are included in a same downlink control information sent by the network device to the terminal device.

9. The method of claim 7, wherein there is an overlap between the second time domain resource and the first time domain resource.

10. The method of any of claims 7 to 9, wherein the second indication information indicates that the second time domain resource is at least one of a group of X symbols; or, the second indication information indicates that the second time domain resource is a symbol group other than the at least one symbol group in the X symbol groups, where any symbol group in the X symbol groups includes at least one orthogonal frequency division multiplexing, OFDM, symbol, and X is a positive integer.

11. The method of claim 10, wherein the X symbol groups are at least one of a first symbol group and a second symbol group, wherein the first symbol group includes orthogonal frequency division OFDM symbols having symbol index values of 3 to 6, respectively, and the second symbol group includes OFDM symbols having symbol index values of 7 to 10, respectively; or,

the X symbol groups are at least one of a third symbol group, a fourth symbol group, a fifth symbol group, a sixth symbol group, a seventh symbol group and an eighth symbol group, wherein the third symbol group includes OFDM symbols having symbol index values of 1 to 3, respectively, the fourth symbol group includes OFDM symbols having symbol index values of 3 to 5, the fifth symbol group includes OFDM symbols having symbol index values of 5 to 6, the sixth symbol group includes OFDM symbols having symbol index values of 7 to 8, respectively, the seventh symbol group includes OFDM symbols having symbol index values of 8 to 10, respectively, and the eighth symbol group includes OFDM symbols having symbol index values of 10 to 12, respectively; or,

the X symbol groups are at least one of the fourth symbol group, the fifth symbol group, the sixth symbol group, and the seventh symbol group; or,

the X symbol groups are at least one of the fourth symbol group, the seventh symbol group, and a ninth symbol group, where the ninth symbol group includes OFDM symbols having symbol index values of 5 to 8, respectively.

12. The method of claim 11, wherein the method further comprises:

the terminal device receives third indication information from the network device, wherein the third indication information indicates the symbol index value of the OFDM symbol contained in the X symbol groups;

and after receiving the second indication information, the terminal device determines the OFDM symbol included in the second time domain resource indicated by the second indication information according to the symbol index value indicated by the third indication information.

13. A signal receiving method, comprising:

the method comprises the steps that network equipment sends indication information and first downlink control information to terminal equipment, wherein the indication information indicates that the number of first downlink control information received by the terminal equipment in a control resource set is N, the first downlink control information is used for uplink scheduling, the first downlink control information belongs to the first downlink control information, and N is an integer larger than 1; the first downlink control information includes first indication information and second indication information, the first indication information is used for indicating the terminal device to send an uplink signal to the network device on a first time domain resource, and the second indication information is used for indicating the terminal device not to send the uplink signal to the network device on a second time domain resource;

and the network equipment receives an uplink signal sent by the terminal equipment on the time domain resource scheduled by the first downlink control information.

14. The method of claim 13, wherein the indication information is carried in the first downlink control information.

15. The method of claim 13, wherein the indication information is carried in second downlink control information, and the second downlink control information does not belong to the first type of downlink control information, or the second downlink control information belongs to the first type of downlink control information but has a different format from the first downlink control information.

16. The method of claim 15, wherein the time domain resource scheduled by the first downlink control information and the time domain resource scheduled by the second downlink control information belong to a same time slot or a same subframe.

17. A communications apparatus, comprising: a processing unit and a transceiver unit;

the processing unit is configured to control the transceiver unit to send first indication information and second indication information to a terminal device, where the first indication information is used to indicate the terminal device to send an uplink signal to the apparatus on a first time domain resource, and the second indication information is used to indicate the terminal device not to send the uplink signal to the apparatus on a second time domain resource;

the processing unit is further configured to control the transceiver unit to receive the uplink signal from the terminal device on a third time domain resource, where the third time domain resource is not overlapped with the second time domain resource, and the first time domain resource includes the third time domain resource.

18. The apparatus of claim 17, wherein the first indication information and the second indication information are included in a same downlink control information sent by the apparatus to the terminal device.

19. The apparatus of claim 17, wherein there is an overlap between the second time domain resource and the first time domain resource.

20. The apparatus of any one of claims 17 to 19, wherein the second indication information indicates that the second time domain resource is at least one of a group of X symbols; or, the second indication information indicates that the second time domain resource is a symbol group other than the at least one symbol group in the X symbol groups; any one of the X symbol groups comprises at least one Orthogonal Frequency Division Multiplexing (OFDM) symbol, and X is a positive integer.

21. The apparatus of claim 20, wherein the X symbol groups comprise at least one of a first symbol group and a second symbol group, wherein the first symbol group comprises orthogonal frequency division OFDM symbols having symbol index values of 3 to 6, respectively, and the second symbol group comprises OFDM symbols having symbol index values of 7 to 10, respectively; or,

22. The apparatus as recited in claim 21, said processing unit to further:

and controlling the transceiver unit to transmit third indication information to the terminal device, wherein the third indication information indicates the index values of the OFDM symbols contained in the X symbol groups.

23. A communications apparatus, comprising: a processing unit and a transceiver unit;

the processing unit is configured to control the transceiver unit to receive first indication information and second indication information from a network device, where the first indication information is used to instruct the apparatus to send an uplink signal to the network device on a first time domain resource, and the second indication information is used to instruct the apparatus not to send the uplink signal to the network device on a second time domain resource;

the processing unit is further configured to control the transceiver unit to send the uplink signal to the network device on a third time domain resource, where the third time domain resource is not overlapped with the second time domain resource, and the first time domain resource includes the third time domain resource.

24. The apparatus of claim 23, wherein the first indication information and the second indication information are included in a same downlink control information sent by the network device to the apparatus.

25. The apparatus of claim 23, wherein there is an overlap between the second time domain resource and the first time domain resource.

26. The apparatus of any one of claims 23 to 25, wherein the second indication information indicates that the second time domain resource is at least one of a group of X symbols; or, the second indication information indicates that the second time domain resource is a symbol group other than the at least one symbol group in the X symbol groups, where any symbol group in the X symbol groups includes at least one orthogonal frequency division multiplexing, OFDM, symbol, and X is a positive integer.

27. The apparatus of claim 26, wherein the X symbol groups are at least one of a first symbol group and a second symbol group, wherein the first symbol group comprises orthogonal frequency division OFDM symbols having symbol index values of 3 to 6, respectively, and the second symbol group comprises OFDM symbols having symbol index values of 7 to 10, respectively; or,

28. The apparatus as recited in claim 27, said processing unit to further:

the processing unit controls the transceiver unit to receive third indication information from the network device, wherein the third indication information indicates symbol index values of OFDM symbols contained in the X symbol groups;

and the processing unit controls the transceiver unit to determine the OFDM symbol included in the second time domain resource indicated by the second indication information according to the symbol index value indicated by the third indication information after receiving the second indication information.

29. A communications apparatus, comprising: a processing unit and a transceiver unit;

the processing unit is configured to control the transceiver unit to send instruction information and first downlink control information to a terminal device, where the instruction information indicates that the number of first type downlink control information received by the terminal device in a control resource set is N, the first type downlink control information is used for uplink scheduling, the first downlink control information belongs to the first type downlink control information, and N is an integer greater than 1; the first downlink control information includes first indication information and second indication information, the first indication information is used for indicating the terminal device to send an uplink signal to a network device on a first time domain resource, and the second indication information is used for indicating the terminal device not to send the uplink signal to the network device on a second time domain resource;

and the processing unit is configured to control the transceiver unit to receive an uplink signal sent by the terminal device on the time domain resource scheduled by the first downlink control information.

30. The apparatus of claim 29, wherein the indication information is carried in the first downlink control information.

31. The apparatus of claim 29, wherein the indication information is carried in second downlink control information, and the second downlink control information does not belong to the first type of downlink control information, or the second downlink control information belongs to the first type of downlink control information but has a different format from the first downlink control information.

32. The apparatus of claim 31, wherein the time domain resources scheduled by the first downlink control information and the time domain resources scheduled by the second downlink control information belong to a same time slot or a same subframe.

33. A chip, wherein the chip is connected to a memory for reading and executing a software program stored in the memory to implement the method according to any one of claims 1 to 16.

34. A computer storage medium comprising computer readable instructions which, when read and executed by a computer, cause the computer to perform the method of any one of claims 1 to 16.