WO2023169570A1

WO2023169570A1 - Channel monitoring method and related product

Info

Publication number: WO2023169570A1
Application number: PCT/CN2023/080868
Authority: WO
Inventors: 张仲丹; 周欢; 丁昱
Original assignee: 北京紫光展锐通信技术有限公司
Priority date: 2022-03-11
Filing date: 2023-03-10
Publication date: 2023-09-14
Also published as: CN116781220A

Abstract

The present application relates to the technical field of communications, and provides a channel monitoring method and a related product. The channel monitoring method comprises: receiving resource indication information from a network device, the resource indication information being used for indicating a PDCCH monitoring cycle and the time domain position of a PDCCH resource, the PDCCH resource comprising at least two symbols in a time domain, the number of symbols of the PDCCH resource and a CRS resource overlapping in the time domain being less than or equal to a first threshold, and the CRS resource being used for transmitting a long term evolution (LTE) CRS; and monitoring a new radio (NR) PDCCH according to the PDCCH monitoring cycle and the time domain position of the PDCCH resource. By using the present application, maximum resource sharing is realized while improving the reliability of NR PDCCH channel estimation.

Description

Channel monitoring methods and related products

Technical field

The present application relates to the field of communication technology, and in particular, to a channel monitoring method and related products.

Background technique

New radio (New radio, NR) supports the use of symbols used by the Long Term Evolution (LTE) cell-specific reference signal (CRS) to implement the NR physical downlink control channel (PDCCH). communication. However, when NR PDCCH and LTE CRS share the same symbol in the time domain, the resources used by NR PDCCH, NR DMRS and LTE CRS in the frequency domain cannot overlap. Usually, NR communicates with Resource Block (RB) as the granularity, and the number of subcarriers included in one RB in the frequency domain is limited. Therefore, it is necessary to improve the reliability of NR PDCCH channel estimation while improving the reliability of NR PDCCH channel estimation. , research on achieving maximum resource sharing has important practical value.

Contents of the invention

The embodiments of this application provide a channel monitoring method and related products, which can improve the reliability of NR PDCCH channel estimation and achieve maximum resource sharing.

In the first aspect, embodiments of the present application provide a channel monitoring method, which is applied to a terminal device. The method includes:

Receive resource indication information from a network device. The resource indication information is used to indicate the downlink physical control channel PDCCH listening period and the time domain position of the PDCCH resource. The PDCCH resource includes at least two symbols in the time domain, and the PDCCH The number of symbols that overlap the resource and the cell-specific reference signal CRS resource in the time domain is less than or equal to the first threshold, and the CRS resource is used to transmit Long Term Evolution LTE CRS;

Monitor the new air interface NR PDCCH according to the PDCCH monitoring period and the time domain position of the PDCCH resource.

Based on the description of the first aspect, the PDCCH resource includes at least two symbols in the time domain, and the number of symbols overlapping the PDCCH resource and the CRS resource in the time domain is less than or equal to the first threshold, by limiting the PDCCH resource in the time domain The number of symbols included, as well as the number of symbols in the time domain where PDCCH resources and CRS resources overlap, can improve the reliability of NR PDCCH channel estimation and achieve maximum resource sharing.

In an optional implementation, the resource indication information includes the PDCCH monitoring period, time slot offset and symbol position, and the time slot offset is used to indicate that the time slot in which the PDCCH resource is located is The position in a PDCCH listening period, the symbol position is used to indicate the position of the PDCCH resource in a timeslot.

In an optional implementation manner, the CRS resources and DMRS resources located in the same time domain resource do not overlap in the frequency domain, and the DMRS resources are used to transmit DMRS, and the DMRS is used for channel estimation of the NR PDCCH;

Wherein, the DMRS resource includes at least three resource units RE, and the subcarrier spacing between two adjacent REs among the at least three REs is the same.

To implement this embodiment, when CRS resources and DMRS resources located in the same time domain resource do not overlap in the frequency domain, the subcarrier spacing between two adjacent REs in at least three REs in the DMRS resources is the same, so as to obtain the same result from the DMRS resources. Still mapping at equal intervals to improve the reliability of NR PDCCH channel estimation.

In an optional implementation, the CRS resources and DMRS resources located in the same time domain resource do not overlap in the frequency domain, the DMRS resource is used to transmit DMRS, and the DMRS is used for the channel of the NR PDCCH estimate;

Wherein, the DMRS resource includes two REs, and the subcarrier spacing between the two REs is the same as the subcarrier spacing between two adjacent DMRS resources.

In an optional implementation, the DMRS resources include a first DMRS resource and a second DMRS resource, the CRS resource and the first DMRS resource do not overlap in the frequency domain, and the CRS resource and the first DMRS resource Located on the first symbol in the time domain, the CRS resource and the second DMRS resource do not overlap in the time domain, the second DMRS resource includes a first RE, and the first DMRS resource includes a second RE and a Three REs, wherein the subcarrier spacing between two adjacent REs among the first RE, the second RE and the third RE is the same, and the first RE is located at the second symbol in the time domain, so The first symbol and the second symbol are continuous; the method further includes:

receiving a first DMRS on the first DMRS resource and a second DMRS on the first RE;

Channel estimation is performed on the NR PDCCH according to the first DMRS and the second DMRS.

In the second aspect, embodiments of the present application provide a channel monitoring method, which is applied to network equipment. The method includes:

Determine the downlink physical control channel PDCCH listening period and the time domain location of PDCCH resources;

Send resource indication information to the terminal device, where the resource indication information is used to indicate the PDCCH listening period and the time domain location of the PDCCH resource, the PDCCH resource includes at least two symbols in the time domain, and the PDCCH resource The number of symbols that overlap with the cell-specific reference signal CRS resources in the time domain is less than or equal to the first threshold, and the CRS resources are used to transmit Long Term Evolution LTE CRS;

Send new air interface NR PDCCH.

Based on the description of the second aspect, the PDCCH resource includes at least two symbols in the time domain, and the number of symbols overlapping the PDCCH resource and the CRS resource in the time domain is less than or equal to the first threshold, by limiting the PDCCH resource in the time domain The number of symbols included, as well as the number of symbols in the time domain where PDCCH resources and CRS resources overlap, can improve the reliability of NR PDCCH channel estimation and achieve maximum resource sharing.

The first DMRS is sent on the first DMRS resource and the second DMRS is sent on the first RE.

In a third aspect, embodiments of the present application provide a communication device, which is used in terminal equipment. The device includes:

A receiving unit, configured to receive resource indication information from a network device. The resource indication information is used to indicate the downlink physical control channel PDCCH listening period and the time domain position of the PDCCH resource. The PDCCH resource includes at least two symbols in the time domain. , and the number of symbols that overlap the PDCCH resource and the cell-specific reference signal CRS resource in the time domain is less than or equal to the first threshold, and the CRS resource is used to transmit Long Term Evolution LTE CRS;

A monitoring unit, configured to monitor the new air interface NR PDCCH according to the PDCCH monitoring period and the time domain position of the PDCCH resource.

Wherein, the DMRS resource includes two REs, and the subcarrier spacing between the two REs is the same as the subcarrier spacing between two adjacent DMRS resources. The subcarrier spacing is the same.

In an optional implementation, the DMRS resources include a first DMRS resource and a second DMRS resource, the CRS resource and the first DMRS resource do not overlap in the frequency domain, and the CRS resource and the first DMRS resource Located on the first symbol in the time domain, the CRS resource and the second DMRS resource do not overlap in the time domain, the second DMRS resource includes a first RE, and the first DMRS resource includes a second RE and a Three REs, wherein the subcarrier spacing between two adjacent REs among the first RE, the second RE and the third RE is the same, and the first RE is located at the second symbol in the time domain, so The first symbol and the second symbol are consecutive;

The receiving unit is further configured to receive a first DMRS on the first DMRS resource and a second DMRS on the first RE;

The device also includes:

A channel estimation unit, configured to perform channel estimation on the NR PDCCH according to the first DMRS and the second DMRS.

In the fourth aspect, embodiments of the present application provide a communication device, which is used in network equipment. The device includes:

Determining unit, used to determine the downlink physical control channel PDCCH monitoring period and the time domain position of the PDCCH resource;

A sending unit, configured to send resource indication information to the terminal equipment, where the resource indication information is used to indicate the PDCCH listening period and the time domain location of the PDCCH resource, where the PDCCH resource includes at least two symbols in the time domain, And the number of symbols that overlap the PDCCH resource and the cell-specific reference signal CRS resource in the time domain is less than or equal to the first threshold, and the CRS resource is used to transmit Long Term Evolution LTE CRS;

The sending unit is also used to send the new air interface NR PDCCH.

In an optional implementation, the DMRS resources include a first DMRS resource and a second DMRS resource, the CRS resource and the first DMRS resource do not overlap in the frequency domain, and the CRS resource and the first DMRS resource Located on the first symbol in the time domain, the CRS resource and the second DMRS resource do not overlap in the time domain, the second DMRS resource includes a first RE, and the first DMRS resource including a second RE and a third RE, wherein the subcarrier spacing between two adjacent REs among the first RE, the second RE and the third RE is the same, and the first RE is Located at the second symbol, the first symbol and the second symbol are consecutive;

The sending unit is also configured to send the first DMRS on the first DMRS resource and the second DMRS on the first RE.

In a fifth aspect, embodiments of the present application provide a communication device. The communication device includes a processor and a memory. The processor and the memory are connected to each other. The memory is used to store a computer program. The computer program includes program instructions. The processor is configured to The program instructions are called to execute the method described in the first aspect or the second aspect.

In a sixth aspect, embodiments of the present application provide a chip, which includes a processor and an interface, the processor and the interface are coupled; the interface is used to receive or output signals, and the processor is used to execute code instructions to execute the first aspect or the third aspect. The methods described in the two aspects.

In a seventh aspect, embodiments of the present application provide a module device, characterized in that the module device includes a communication module, a power module, a storage module and a chip module, wherein: the power module is used for The module device provides power; the storage module is used to store data and instructions; the communication module is used for internal communication of the module device, or for the module device to communicate with external devices; the chip module is used for execution The method described in the first aspect or the second aspect.

In an eighth aspect, embodiments of the present application provide a computer-readable storage medium that stores a computer program. The computer program includes program instructions. When executed by a processor, the program instructions cause the The processor executes the method described in the first aspect or the second aspect.

Description of the drawings

Figure 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application;

Figure 2 is a schematic flow chart of a channel monitoring method provided by an embodiment of the present application;

Figure 3 is a schematic diagram of subframes and symbols provided by an embodiment of the present application;

Figure 4A is a schematic diagram of DMRS resources provided by an embodiment of the present application;

Figure 4B is a schematic diagram of another DMRS resource provided by an embodiment of the present application;

Figure 4C is a schematic diagram of another DMRS resource provided by an embodiment of the present application;

Figure 5A is a schematic diagram of CRS resources when using a single antenna port provided by this application;

Figure 5B is a schematic diagram of CRS resources when two antenna ports are provided by this application;

Figure 5C is a schematic diagram of CRS resources when four antenna ports are provided by this application;

Figure 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 7 is a schematic structural diagram of another communication device provided by an embodiment of the present application;

Figure 8 is a schematic structural diagram of yet another communication device provided by an embodiment of the present application;

Figure 9 is a schematic structural diagram of a module device provided by an embodiment of the present application.

Detailed ways

In this application, the terms "comprises," "comprises," or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also includes no Other elements expressly listed, or elements inherent to such process, method, article or apparatus. Without further limitation, an element defined by the statement "comprises a..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, the application may be implemented differently. Components, features, and elements with the same names in the examples may have the same meaning or may have different meanings. Their specific meanings need to be determined based on their interpretation in the specific embodiment or further combined with the context of the specific embodiment.

It should be understood that in this application, the term "and/or" is only an association relationship describing related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, and exists simultaneously A and B, there are three situations of B alone. In addition, the character "/" in this article indicates that the related objects are an "or" relationship. “At least one of the following” or similar expressions in the embodiments of this application refers to any combination of these items, including any combination of a single item (items) or a plurality of items (items). For example, at least one of a, b or c can represent the following seven situations: a, b, c, a and b, a and c, b and c, a, b and c. Among them, each of a, b, and c can be an element or a set containing one or more elements.

It should be understood that in this application, "plurality" means two or more. In this application, the first, second, etc. descriptions are only for illustration and to distinguish the description objects, and there is no order. They do not represent special limitations on the number of devices in the embodiments of this application, and cannot constitute a limitation on the embodiments of this application. Any restrictions.

In addition, "equal to" in this application can be used together with "greater than" or "less than". When "equal to" and "greater than" are used together, the technical solution of "greater than" is adopted; when "equal to" and "less than" are used together, the technical solution of "less than" is adopted.

First, some terms involved in this application are explained to facilitate understanding by those skilled in the art.

1. Terminal equipment. In the embodiment of the present application, the terminal device is a device with wireless transceiver function, which can be called a terminal (terminal), user equipment (UE), mobile station (MS), or mobile terminal (mobile terminal). MT), access terminal equipment, vehicle-mounted terminal equipment, industrial control terminal equipment, UE unit, UE station, mobile station, remote station, remote terminal equipment, mobile equipment, UE terminal equipment, wireless communication equipment, UE agent or UE device, etc. . Terminal equipment can be fixed or mobile. It should be noted that the terminal device may support at least one wireless communication technology, such as long-term evolution (long time evolution, LTE), new radio (new radio, NR), etc. For example, the terminal device may be a mobile phone (mobile phone), tablet computer (pad), desktop computer, notebook computer, all-in-one computer, vehicle-mounted terminal, virtual reality (VR) terminal device, augmented reality (AR) terminal Equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, transportation Wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones telephone, session initiation protocol (SIP) telephone, wireless local loop (WLL) station, personal digital assistant (PDA), handheld device with wireless communication capabilities, computing device or connection to other processing devices of wireless modems, wearable devices, terminal devices in future mobile communication networks or terminal devices in future evolved public land mobile networks (PLMN), etc. In some embodiments of the present application, the terminal device may also be a device with transceiver functions, such as a chip module. Among them, the chip module may include chips and may also include other discrete devices. The embodiments of this application do not limit the specific technology and specific equipment form used by the terminal equipment.

2. Network equipment. In the embodiment of the present application, the network device is a device that provides wireless communication functions for terminal devices. The network device may be an access network (AN) device, and the AN device may be a radio access network (RAN) device. Among them, the network device can support at least one wireless communication technology, such as LTE, NRA, etc. Examples of network equipment include but are not limited to: next generation base station (generation nodeB, gNB), evolved node B (evolved node B, eNB), wireless network control in the fifth generation mobile communication system (5th-generation, 5G) Radio network controller (RNC), node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., home evolved node B, Or home node B, HNB), baseband unit (baseband unit, BBU), TRP, transmitting point (transmitting point, TP), mobile switching center, etc. The network device can also be a wireless controller, a centralized unit (CU) and/or a distributed unit (DU) in a cloud radio access network (CRAN) scenario, or the network device can be Relay stations, access points, vehicle-mounted equipment, terminal equipment, wearable devices, and access network equipment in future mobile communications or access network equipment in future evolved PLMN, etc. In some embodiments, the network device may also be a device with a wireless communication function for the terminal device, such as a chip module. For example, the chip module may include chips, and may also include other discrete devices. The embodiments of this application do not limit the specific technology and specific equipment form used by the network equipment.

3. PDCCH resources. In the embodiment of this application, PDCCH resources are used for NR PDCCH communication, and can also be called NR PDCCH resources. NR PDCCH is used for communication of downlink control information (DCI). The DCI is used for scheduling NR physical downlink shared channel (Physical Downlink Shared Channel, PDSCH), and NR PDSCH is used for transmitting or carrying NR data. Specifically, PDCCH resources may include time domain resources and frequency domain resources. For example, in the case of communication between the terminal equipment and the network equipment at the RB granularity, for one RB, the PDCCH resource may include one or more symbols in the time domain and one or more sub-symbols in the frequency domain. carrier.

4. DMRS resources. In this embodiment of the present application, DMRS resources are used for NR DMRS communication. NR DMRS is used for channel estimation of NR PDCCH. Specifically, DMRS resources include time domain resources and frequency domain resources. For example, in the case of communication between the terminal device and the network device at the RB granularity, for one RB, the DMRS resource may include one or more symbols in the time domain and one or more sub-symbols in the frequency domain. carrier. It should be understood that in the case where the DMRS resources and the PDCCH resources share the same time domain resource, the DMRS resources and the PDCCH resources do not overlap in the frequency domain. For example, RB includes symbols 0 to 13 in the time domain, and subcarriers 0 to 13 in the frequency domain. Wave 11. Among them, symbol 0 and subcarrier 3 are PDCCH resources, and symbol 0 and subcarrier 4 are DMRS resources. It should be understood that one RE can be composed of one symbol in the time domain and one subcarrier in the frequency domain.

5. CRS resources. In the embodiment of this application, CRS resources are used for LTE CRS communication, that is, CRS resources are used for transmitting LTE CRS, and LTE CRS is used for LTE channel estimation. Specifically, CRS resources may include time domain resources and frequency domain resources. For example, in the case of communication between the terminal device and the network device at RB granularity, the CRS resource may include one or more symbols in the time domain and one or more subcarriers in the frequency domain. It should be understood that when CRS resources, DMRS resources and PDCCH resources share the same time domain resource, the CRS resources, DMRS resources and PDCCH resources do not overlap in the frequency domain. For example, RB includes symbols 0 to 13 in the time domain and subcarriers 0 to 11 in the frequency domain. Among them, symbol 0 and subcarrier 3 are PDCCH resources, symbol 0 and subcarrier 4 are DMRS resources, and symbol 0 and subcarrier 0 are CRS resources.

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

As shown in Figure 1, it is a network architecture diagram of a communication system according to an embodiment of the present application. The communication system as shown in the figure includes a network device and a terminal device, where the network device and the terminal device can communicate wirelessly. For example, network equipment and terminal equipment communicate through the Uu port. It should be noted that FIG. 1 is only an illustration of the network architecture of a communication system, and does not constitute a limitation on the network architecture of the communication system in the embodiment of the present application. For example, the communication system in the embodiment of the present application does not limit the number of network devices and terminal devices. For example, the communication system in the embodiment of the present application may include two or more network devices, or two or more terminal devices.

In addition, embodiments of the present application can be applied to communication scenarios such as relay communication, dual connection communication, or vehicle-to-everything communication, without limitation.

Taking the communication system shown in Figure 1 as an example, the channel monitoring method according to the embodiment of the present application will be described in detail.

As shown in Figure 2, it is a schematic flow chart of a channel monitoring method according to an embodiment of the present application, which specifically includes the following steps:

201. The network device sends resource indication information, and correspondingly, the terminal device receives the resource indication information. Specifically, the resource indication information is used to indicate the PDCCH monitoring period and the time domain location of the PDCCH resource.

Wherein, the PDCCH resource includes at least two symbols in the time domain, and the number of symbols overlapping the PDCCH resource and the CRS resource in the time domain is less than or equal to the first threshold, and the CRS resource is used for LTE CRS.

In some embodiments, the network device may carry the resource indication information in RRC signaling and send it to the terminal device. That is to say, the network device sends RRC signaling, and correspondingly, the terminal device receives the RRC signaling, where the RRC signaling includes resource indication information. Alternatively, the network device may carry the resource indication information in DCI and send it to the terminal device. That is, the network device sends DCI, and correspondingly, the terminal device receives DCI, where the DCI includes resource indication information.

It should be noted that the embodiments of the present application do not limit signaling or messages carrying resource indication information. In addition, in this embodiment of the present application, the resource indication information may also be called resource configuration information or Search Space Information Elements (Search Space Information Elements, Search Space Information Elements). Space IE), etc., the embodiment of the present application does not limit the name of the resource indication information.

For example, the network device may first determine the PDCCH monitoring period and the time domain location of the PDCCH resource, and then send the resource indication information.

In some embodiments of the present application, when the network device needs to send NR PDCCH to the terminal device, the network device sends resource indication information to the terminal device, so that the terminal device can perform NR monitoring according to the PDCCH listening period and the time domain position of the PDCCH resource. PDCCH performs blind testing. After the blind detection is successful, the terminal equipment needs to read the downlink control information (DCI) carried on the NR PDCCH and receive downlink data based on the DCI.

202. The network device sends NR PDCCH.

203. The terminal equipment monitors the NR PDCCH according to the PDCCH monitoring cycle and the time domain position of the PDCCH resource.

For example, the terminal device determines PDCCH resource 0, PDCCH resource 1, etc. based on the PDCCH listening period and the time domain position of the PDCCH resource, and monitors NR PDCCH on PDCCH resource 0, PDCCH resource 1 and other resources. If the network device is on PDCCH resource 1 If the terminal device does not monitor the NR PDCCH on PDCCH resource 0 and detects the PDCCH on PDCCH resource 1, it can stop monitoring the NR PDCCH.

It should be noted that when the network device sends NR PDCCH, it can be understood as: the network device sends information on the NR PDCCH channel. The terminal equipment monitors the NR PDCCH according to the PDCCH listening cycle and the time domain position of the PDCCH resources. This can be understood as: the terminal equipment receives the NR PDCCH according to the PDCCH listening cycle and the time domain position of the PDCCH resources. In other words, the terminal equipment receives the NR PDCCH according to the PDCCH listening cycle. and the time domain location of the PDCCH resource, receiving information on the NR PDCCH or monitoring information on the NR PDCCH.

In the embodiment of the present application, since the network device indicates the PDCCH monitoring period and the time domain position of the PDCCH resource to the terminal device, the PDCCH resource configured for the terminal device includes at least two symbols in the time domain, and the PDCCH resource and the CRS resource are in The number of overlapping symbols in the time domain is less than or equal to the first threshold, thereby increasing PDCCH resources and improving resource utilization, while also helping to improve the reliability of NRPDCCH channel estimation.

For example, the symbols in the embodiment of the present application may be OFDM symbols or other types of symbols, which is not limited.

It should be noted that when the number of symbols in which the PDCCH resource and the CRS resource overlap in the time domain is 0, it can be understood that the PDCCH resource and the CRS resource do not overlap in the time domain. When the number of overlapping symbols of the PDCCH resource and the CRS resource in the time domain is 1, it can be understood that: the PDCCH resource and the CRS resource overlap in the time domain, and the number of overlapping symbols is 1.

In the embodiment of the present application, the value of the first threshold may be predefined through a protocol, or may be indicated by the network device to the terminal device, which is not limited. For example, the value of the first threshold is 1.

Further, in some embodiments, the resource indication information may indicate the PDCCH listening period and the time domain location of the PDCCH resource in the following manner:

The resource indication information includes PDCCH monitoring period, slot offset and symbol position. The time slot offset is used to indicate the position of the time slot where the PDCCH resource is located in a PDCCH listening cycle, and the symbol position is used to indicate the position of the PDCCH resource in a time slot.

Take the subcarrier spacing as 30KHz as an example. For example, as shown in Figure 3, the PDCCH listening period is the length of one subframe. Taking subframe i as an example, subframe i includes time slot 0 and time slot 1. Slot 0 includes symbols 0 to 13, and slot 1 includes symbols 0 to 13. For example, if the time slot offset is 0 and the symbol positions are 0 and 1, then the time domain position of the PDCCH resource is symbol 0 and symbol 1 in time slot 0. In which subframe it is located specifically, that is, which PDCCH monitoring cycle, the terminal needs to The device listens in each PDCCH listening period until it detects the PDCCH. For example, if NR PDCCH is monitored on symbol 0 and symbol 1 of slot 0 in subframe i, stop NR PDCCH monitoring.

It should be noted that the above is only an example of indicating the time domain location of the PDCCH monitoring period and PDCCH resources, and does not constitute a limitation on the embodiments of the present application. In the embodiments of the present application, the PDCCH can also be indicated in other ways. Listening period and time domain location of PDCCH resources.

In some embodiments of the present application, CRS resources and DMRS resources located in the same time domain resource do not overlap in the frequency domain. Among them, DMRS resources can be found in the related introduction in Glossary.

Wherein, the DMRS resource includes at least three REs, and the subcarrier spacing between two adjacent REs among the at least three REs is the same.

Taking the DMRS resource located in the same time domain resource as the CRS resource and including three REs as an example. As shown in Figure 4A, the CRS resources include RE000, RE003, RE006, RE009, RE100, RE103, RE106 and RE109. DMRS resources located in the same time domain resources as CRS resources include RE102, RE105 and RE108. Among them, RE100, RE103, RE106, RE109, RE102, RE105 and RE108 are all located at symbol 1 in the time domain. That is to say, RE100, RE103, RE106, RE109 and DMRS resources are CRS resources located in the same time domain resource. RE102 and RE105 are two adjacent REs in the DMRS resource, and RE105 and RE108 are also two adjacent REs in the DMRS resource. The subcarrier spacing between RE102 and RE105 is two subcarriers, and the subcarrier spacing between RE105 and RE108 is two subcarriers. Therefore, the subcarrier spacing between two adjacent REs in DMRS resources is the same.

Further, the DMRS resources that do not overlap with the CRS resources in the time domain also include at least three REs, and the subcarrier spacing between two adjacent REs among the at least three REs is the same. For example, as shown in Figure 4A, DMRS resources that do not overlap with CRS resources in the time domain include RE201, RE205 and RE209. Among them, the subcarrier spacing between RE201 and RE205 is the same as the subcarrier spacing between RE205 and RE209, which is 3 subcarrier spacing. In this way, the subcarrier spacing between adjacent DMRS resources located on the same time domain resource between different RBs is the same. Helps improve the reliability of NR PDCCH channel estimation.

It should be noted that, as shown in Figure 4A, taking symbol 1 as an example, one or more of RE101, RE104, RE107, RE110, and RE111 can be PDCCH resources for the transmission of NR PDCCH. Taking symbol 2 as an example, one or more of RE211, RE210, RE208, RE207, RE206, RE204, RE203, RE202, and RE200 can also be PDCCH resources for communication of NR PDCCH.

Or, in other embodiments of the present application, the CRS resources and DMRS resources located in the same time domain resource do not overlap in the frequency domain. The DMRS resource includes two REs, and the subcarrier spacing between the two REs is The subcarrier spacing between two adjacent DMRS resources is the same.

For example, as shown in Figure 4B, the CRS resources include RE000, RE003, RE006, RE009, RE100, RE103, RE106 and RE109. DMRS resources located on the same time domain resources as CRS resources include RE101 and RE107. Among them, RE101, RE107 and RE100, RE103, RE106 and RE109 are all located on symbol 1 in the time domain. RE101 and RE107 are separated by 5 subcarriers. Two adjacent DMRS resources can be understood as being located on the same symbol 1. The interval between DMRS resources between two adjacent RBs in the frequency domain is 5 subcarriers. For example, the DMRS resources located on symbol 1 in RB0 include RE101 and RE107, and the DMRS resources located on symbol 1 in RB1 include RE101 and RE107. The interval between the DMRS resources between RB0 and RB1 can be understood as: the DMRS resources located on symbol 1 in RB0 The subcarrier spacing between RE107 on symbol 1 and RE101 on symbol 1 in RB1. RB0 and RB1 are two RBs located on symbol 1, that is, RB0 and RB1 are located on the same symbol and are adjacent in the frequency domain.

Further, the DMRS resources that do not overlap with the CRS resources in the time domain also include at least three REs, and the subcarrier spacing between two adjacent REs among the at least three REs is the same.

It should be noted that, as shown in Figure 4B, taking symbol 1 as an example, one or more of RE102, RE104, RE105, RE108, RE110, and RE111 can be PDCCH resources for the transmission of NR PDCCH. Taking symbol 2 as an example, one or more of RE211, RE210, RE208, RE207, RE206, RE204, RE203, RE202, and RE200 can also be PDCCH resources for communication of NR PDCCH.

Or, in some embodiments of the present application, the DMRS resources include the first DMRS resource and the second DMRS resource, the CRS resource and the first DMRS resource do not overlap in the frequency domain, and the CRS resource and the first DMRS resource do not overlap in the time domain. Located on the first symbol, the CRS resource and the second DMRS resource do not overlap in the time domain. The second DMRS resource includes the first RE. The first DMRS resource includes the second RE and the third RE, where the first RE and the second RE The subcarrier spacing between two adjacent REs in the third RE is the same, and the first RE is located in the second symbol in the time domain, and the first symbol and the second symbol are continuous. In this case, the terminal device receives the first DMRS on the first DMRS resource and the second DMRS on the first RE; then, the terminal device performs channel estimation on the NRPDCCH based on the first DMRS and the second DMRS.

For example, as shown in Figure 4C, the CRS resources include RE000, RE003, RE006, RE009, RE100, RE103, RE106 and RE109. The first DMRS resource located on the same time domain resource as the CRS resource includes RE101 and RE105. Among them, RE101, RE105 and RE100, RE103, RE106 and RE109 are all located on symbol 1 in the time domain. RE101 and RE105 are separated by 3 subcarriers. The second DMRS resources located on different time domain resources from the CRS resources include RE201, RE205 and RE209. Among them, RE209 is located on symbol 2 in the time domain, and symbol 1 and symbol 2 are continuous. And the subcarrier spacing between RE209 and RE205 is 3 subcarriers. Therefore, the terminal equipment may receive the first DMRS on RE101 and RE105, receive the second DMRS on RE209, and perform channel estimation on the NR PDCCH based on the first DMRS and the second DMRS. For example, in the case that RE102, RE104, RE107, RE108, RE110 and RE111 are PDCCH resources, the terminal equipment can determine the NR transmitted on these resources RE102, RE104, RE107, RE108, RE110 and RE111 based on the first DMRS and the second DMRS. PDCCH performs channel estimation.

Of course, it should be noted that for Figure 4C, when RE009 can be used to transmit NR DMRS and is not used to transmit LTE CRS, the terminal equipment can also receive NR DMRS based on RE009 and RE101 and RE105. NR DMRS, perform channel estimation on NR PDCCH. Among them, RE009 is located on symbol 0 in the time domain, and symbol 0 and symbol 1 are also continuous.

It should be noted that, as shown in Figure 4C, taking symbol 1 as an example, one or more of RE102, RE104, RE107, RE108, RE110, and RE111 can be PDCCH resources for the transmission of NR PDCCH. Taking symbol 2 as an example, one or more of RE211, RE210, RE208, RE207, RE206, RE204, RE203, RE202, and RE200 can also be PDCCH resources for communication of NR PDCCH.

It should be understood that the time domain location of the CRS resource in the embodiment of the present application is related to the number of antenna ports used to transmit LTE CRS. For example, as shown in Figure 5A, when the number of antenna ports used to transmit LTE CRS is 1, the time domain positions of the CRS resources are located on symbol 0, symbol 4, symbol 7, and symbol 11. For another example, as shown in Figure 5B, when the number of antenna ports used to transmit LTE CRS is 2, the time domain position of the CRS can be located on symbol 0, symbol 4, symbol 7, and symbol 11. For another example, as shown in Figure 5C, when the number of antenna ports used to transmit LTE CRS is 4, the time domain position of the CRS can be located at symbol 0, symbol 1, symbol 4, symbol 7, symbol 8, and symbol 11 superior.

In the embodiment of this application, the frequency domain position of the CRS resource is related to the specific frequency domain offset of the cell. The LTE CRS consists of a series of reference symbols, and each reference symbol occupies one RE. The starting position of the reference symbol in each RB is related to the cell-specific frequency shift (frequency shift). LTE defines 6 frequency shifts, which are related to the physical cell identity (Physical Cell Identity, PCI). Its value is PCI mod 6.

It should be noted that the above Figures 4A-4C are examples when the frequency offset is 0 (that is, PCI mod 6 = 0) and the number of antenna ports transmitting LTE CRS is 4. If it is other frequency offsets, Then the starting position of the LTE CRS reference symbol in each RB will change.

The PDCCH resource or NR PDCCH usually occupies at least one symbol of the first three symbols of a timeslot in the time domain, that is, the PDCCH resource or NR PDCCH usually occupies symbol 0, symbol 1, and symbol 2 in a timeslot in the time domain. one or more symbols in . Therefore, different first thresholds may be configured for different antenna ports. For example, in the case of one or two antenna ports, the value of the first threshold may be 0. For the case of 4 antenna ports, the value of the first threshold may be 1. Of course, for different antenna ports, you can also configure the same first threshold. For example, when the antenna port used to transmit LTE CRS is 1, 2 or 4, configure the first threshold value to 1. .

Each of the above embodiments can be used in combination with each other or alone, without limitation.

Please refer to FIG. 6 , which is a schematic structural diagram of a communication device provided by an embodiment of the present application. The device may be a terminal device, a device in the terminal device, or a device that can be used in conjunction with the terminal device. The communication device 500 shown in Figure 6 may include receiving Unit 501 and listening unit 502. in:

The receiving unit 501 is configured to receive resource indication information from the network device. The resource indication information is used to indicate the downlink physical control channel PDCCH listening period and the time domain position of the PDCCH resource. The PDCCH resource includes at least two symbols, and the number of symbols that overlap the PDCCH resource and the cell-specific reference signal CRS resource in the time domain is less than or equal to the first threshold, and the CRS resource is used to transmit Long Term Evolution LTE CRS;

The monitoring unit 502 is configured to monitor the new air interface NR PDCCH according to the PDCCH monitoring period and the time domain position of the PDCCH resource.

The receiving unit 501 is further configured to receive a first DMRS on the first DMRS resource and receive a second DMRS on the first RE;

The device also includes:

For the relevant content of this implementation mode, please refer to the relevant content of the method embodiment in Figure 2 above. No further details will be given here.

Please refer to FIG. 7 , which is a schematic structural diagram of another communication device provided by an embodiment of the present application. The device may be a network device, a device in the network device, or a device that can be used in conjunction with the network device. The communication device 600 shown in FIG. 7 may include a determining unit 601 and a sending unit 602. in:

Determining unit 601, used to determine the downlink physical control channel PDCCH listening period and the time domain position of the PDCCH resource;

Sending unit 602, configured to send resource indication information to the terminal equipment. The resource indication information is used to indicate the PDCCH listening period and the time domain location of the PDCCH resource. The PDCCH resource includes at least two symbols in the time domain. , and the number of symbols that overlap the PDCCH resource and the cell-specific reference signal CRS resource in the time domain is less than or equal to the first threshold, and the CRS resource is used to transmit Long Term Evolution LTE CRS;

The sending unit 602 is also used to send the new air interface NR PDCCH.

The sending unit 602 is also configured to send the first DMRS on the first DMRS resource and the second DMRS on the first RE.

Please refer to Figure 8. Figure 8 is a schematic structural diagram of another communication device provided by an embodiment of the present application, which is used to implement the functions of the terminal device in Figure 2 above. The communication device 700 may be a terminal device or a device for a terminal device. The device for the terminal device may be a chip system or a chip within the terminal device. Among them, the chip system can be composed of chips, or can also include chips and other discrete devices.

Alternatively, the communication device 700 is used to implement the functions of the network device in Figure 2 mentioned above. The communication device may be a network device or a device for a network device. The means for the network device may be a system-on-a-chip or chip within the network device.

The communication device 700 includes at least one processor 720, which is used to implement the data processing function of the terminal device or network device in the method in Figure 2 provided by the embodiment of the present application. The apparatus 700 may also include a communication interface 710, which is used to implement the sending and receiving operations of the terminal device or the network device in the method in Figure 2 provided by the embodiment of the present application. In this embodiment of the present application, the processor 720 can be a central processing unit (Central Processing Unit, CPU), and the processor can also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits ( Application Specific Integrated Circuit (ASIC), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. In the embodiment of the present application, the communication interface 710 may be a transceiver, a circuit, a bus, a module, or other types of communication interfaces for communicating with other devices through a transmission medium. For example, the communication interface 710 is used in the device 700 to communicate with other devices. The processor 720 uses the communication interface 710 to send and receive data, and is used to implement the method described in Figure 2 of the above method embodiment.

Communication device 700 may also include at least one memory 730 for storing program instructions and/or data. Memory 730 and processor 720 are coupled. The coupling in the embodiment of this application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information interaction between devices, units or modules. Processor 720 may cooperate with memory 730. Processor 720 may execute program instructions stored in memory 730 . At least one of the at least one memory may be included in the processor.

When the communication device 700 is turned on, the processor 720 can read the software program in the memory 730, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 720 performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit (not shown in the figure). The radio frequency circuit performs radio frequency processing on the baseband signal and then transmits the radio frequency signal through the antenna in the form of electromagnetic waves. Send outward. When data is sent to the device 700, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 720. The processor 720 converts the baseband signal into data and performs processing on the data. deal with.

In another implementation, the radio frequency circuit and antenna can be set up independently of the processor 720 that performs baseband processing. For example, in a distributed scenario, the radio frequency circuit and antenna can be set up remotely and independently of the communication device. layout.

The embodiment of the present application does not limit the specific connection medium between the communication interface 710, the processor 720 and the memory 730. In the embodiment of the present application, the memory 730, the processor 720 and the communication interface 710 are connected through a bus 740 in Figure 8. The bus is represented by a thick line in Figure 8. The connection methods between other components are only schematically explained. , is not limited. The bus can be divided into address bus, data bus, control bus, etc. For ease of presentation, only one thick line is used in Figure 8, but it does not mean that there is only one bus or one type of bus.

When the communication device 700 is used in a terminal device, for example, when the communication device 700 is a chip or a chip system, the communication interface 710 may output or receive a baseband signal. When the communication device 700 is specifically a terminal device, what the communication interface 710 outputs or receives may be a radio frequency signal.

It should be noted that the communication device can perform the relevant steps of the terminal device or the network device in the foregoing method embodiments. For details, please refer to the implementation provided by each of the above steps, which will not be described again here.

For various devices and products applied or integrated in communication devices, each module included in them can be implemented in the form of hardware such as circuits. Different modules can be located in the same component (for example, a chip, circuit module, etc.) or in different components in the terminal. , or at least some of the modules can be implemented in the form of a software program, which runs on the processor integrated inside the terminal, and the remaining (if any) modules can be implemented in hardware such as circuits.

The memory described above may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, non-volatile memory can be read-only memory (ROM), programmable rom (PROM), erasable programmable read-only memory (erasable prom, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EEPROM) or flash memory. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of illustration, but not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM) ), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), Synchronously connect dynamic random access memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (direct rambus RAM, DR RAM).

An embodiment of the present application provides a chip. The chip includes: processor and memory. The number of processors may be one or more, and the number of memories may be one or more. By reading the instructions and data stored in the memory, the processor can perform the above-mentioned channel monitoring method shown in Figure 2 and the steps performed in related implementations.

As shown in Figure 9, Figure 9 is a schematic structural diagram of a module device provided by an embodiment of the present application. The module device 800 can perform the relevant steps of the terminal device or network device in the aforementioned method embodiment. The module device 800 includes: a communication module 801, a power module 802, a storage module 803 and a chip module 804. Among them, the power module 802 is used to provide power for the module device; the storage module 803 is used to store data and instructions; the communication module 801 is used for internal communication of the module device, or for communication between the module device and external devices. ; The chip module 804 can perform the above-mentioned channel monitoring method shown in Figure 2, as well as the steps performed in related implementations.

An embodiment of the present application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program. The computer program includes program instructions. When the program instructions are executed by a processor, the channel monitoring method shown in FIG. 2 can be executed, as well as the steps performed in related embodiments.

The computer-readable storage medium may be an internal storage unit of the terminal device or network device described in any of the preceding embodiments, such as a hard disk or memory of the device. The computer-readable storage medium may also be an external storage device of the terminal device or network device, such as the The equipment is equipped with plug-in hard drives, smart media cards (SMC), secure digital (SD) cards, flash cards, etc. Further, the computer-readable storage medium may also include both an internal storage unit and an external storage device of the terminal device or network device. The computer-readable storage medium is used to store the computer program and other programs and data required by the terminal device or network device. The computer-readable storage medium may also be used to temporarily store data that has been output or is to be output. The computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server or a data center that contains one or more sets of available media. The available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, high-density digital video disc (DVD)), or semiconductor media. The semiconductor medium may be a solid state drive.

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented using software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on the computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, e.g., the computer instructions may be transferred from a website, computer, server, or data center Transmission by wired or wireless means to another website site, computer, server or data center.

It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

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

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or they may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in various embodiments of the present invention may be integrated into one processing unit, each unit may be physically included separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium and includes a number of instructions to enable a computer device (which can be a personal computer, server, or network equipment, etc.) to perform some steps of the methods described in various embodiments of the present invention.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented by instructing relevant hardware through a computer program. The program can be stored in a computer-readable storage medium. The program can be stored in a computer-readable storage medium. During execution, the process may include the processes of the embodiments of each of the above methods. Wherein, the storage medium can be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

What is disclosed above is only a preferred embodiment of the present application. Of course, it cannot be used to limit the scope of rights of the present application. Those of ordinary skill in the art can understand all or part of the processes for implementing the above embodiments, and according to the rights of the present application Equivalent changes required are still within the scope of the application.

Claims

A channel monitoring method, characterized in that the method includes:

Receive resource indication information from a network device. The resource indication information is used to indicate the downlink physical control channel PDCCH listening period and the time domain position of the PDCCH resource. The PDCCH resource includes at least two symbols in the time domain, and the PDCCH The number of symbols that overlap the resource and the cell-specific reference signal CRS resource in the time domain is less than or equal to the first threshold, and the CRS resource is used to transmit Long Term Evolution LTE CRS;

Monitor the new air interface NR PDCCH according to the PDCCH monitoring period and the time domain position of the PDCCH resource.
The method according to claim 1, characterized in that the resource indication information includes the PDCCH monitoring period, a time slot offset and a symbol position, and the time slot offset is used to indicate where the PDCCH resource is located. The position of the time slot in a PDCCH listening cycle, and the symbol position is used to indicate the position of the PDCCH resource in a time slot.
The method according to claim 1 or 2, characterized in that the CRS resources and DMRS resources located in the same time domain resource do not overlap in the frequency domain, the DMRS resource is used to transmit DMRS, and the DMRS is used for Describe the channel estimation of NR PDCCH;

Wherein, the DMRS resource includes at least three resource units RE, and the subcarrier spacing between two adjacent REs among the at least three REs is the same.
The method according to claim 1 or 2, characterized in that the CRS resources and DMRS resources located in the same time domain resource do not overlap in the frequency domain, the DMRS resource is used to transmit DMRS, and the DMRS is used for Describe the channel estimation of NR PDCCH;

Wherein, the DMRS resource includes two REs, and the subcarrier spacing between the two REs is the same as the subcarrier spacing between two adjacent DMRS resources.
The method according to claim 1 or 2, characterized in that the DMRS resources include first DMRS resources and second DMRS resources, the CRS resources and the first DMRS resources do not overlap in the frequency domain, and the CRS resources and the The first DMRS resource is located on the first symbol in the time domain, the CRS resource and the second DMRS resource do not overlap in the time domain, the second DMRS resource includes a first RE, and the first DMRS resource includes the second RE and the third RE, wherein the subcarrier spacing between two adjacent REs among the first RE, the second RE and the third RE is the same, and the first RE is located in the time domain a second symbol, the first symbol and the second symbol being continuous; the method further includes:

receiving a first DMRS on the first DMRS resource and a second DMRS on the first RE;

Channel estimation is performed on the NR PDCCH according to the first DMRS and the second DMRS.
A channel monitoring method, characterized in that the method includes:

Determine the downlink physical control channel PDCCH listening period and the time domain location of PDCCH resources;

Send resource indication information to the terminal device, where the resource indication information is used to indicate the PDCCH listening period and the time domain location of the PDCCH resource, the PDCCH resource includes at least two symbols in the time domain, and the PDCCH resource The number of symbols that overlap with the cell-specific reference signal CRS resources in the time domain is less than or equal to the first threshold, and the CRS resources are used to transmit Long Term Evolution LTE CRS;

Send new air interface NR PDCCH.
The method of claim 6, wherein the resource indication information includes the PDCCH listening period, a time slot offset and a symbol position, and the time slot offset is used to indicate where the PDCCH resource is located. The position of the time slot in a PDCCH listening cycle, and the symbol position is used to indicate the position of the PDCCH resource in a time slot.
The method according to claim 6 or 7, characterized in that the CRS resources and DMRS resources located in the same time domain resource do not overlap in the frequency domain, the DMRS resource is used to transmit DMRS, and the DMRS is used to transmit the DMRS. Describe the channel estimation of NR PDCCH;

Wherein, the DMRS resource includes at least three resource units RE, and the subcarrier spacing between two adjacent REs among the at least three REs is the same.
The method according to claim 6 or 7, characterized in that the CRS resources and DMRS resources located in the same time domain resource do not overlap in the frequency domain, the DMRS resource is used to transmit DMRS, and the DMRS is used to transmit the DMRS. Describe the channel estimation of NR PDCCH;

Wherein, the DMRS resource includes two REs, and the subcarrier spacing between the two REs is the same as the subcarrier spacing between two adjacent DMRS resources.
The method of claim 6 or 7, wherein the DMRS resources include first DMRS resources and second DMRS resources, the CRS resources and the first DMRS resources do not overlap in the frequency domain, and the CRS resources and the The first DMRS resource is located on the first symbol in the time domain, the CRS resource and the second DMRS resource do not overlap in the time domain, the second DMRS resource includes a first RE, and the first DMRS resource includes the second RE and the third RE, wherein the subcarrier spacing between two adjacent REs among the first RE, the second RE and the third RE is the same, and the first RE is located in the time domain a second symbol, the first symbol and the second symbol being continuous; the method further includes:

The first DMRS is sent on the first DMRS resource and the second DMRS is sent on the first RE.
A communication device, characterized by including:

A receiving unit, configured to receive resource indication information from a network device. The resource indication information is used to indicate the downlink physical control channel PDCCH listening period and the time domain position of the PDCCH resource. The PDCCH resource includes at least two symbols in the time domain. , and the number of symbols that overlap the PDCCH resource and the cell-specific reference signal CRS resource in the time domain is less than or equal to the first threshold, and the CRS resource is used to transmit Long Term Evolution LTE CRS;

A monitoring unit, configured to monitor the new air interface NR PDCCH according to the PDCCH monitoring period and the time domain position of the PDCCH resource.
The apparatus according to claim 11, wherein the resource indication information includes the PDCCH listening period, a time slot offset and a symbol position, and the time slot offset is used to indicate where the PDCCH resource is located. The position of the time slot in a PDCCH listening cycle, and the symbol position is used to indicate the position of the PDCCH resource in a time slot.
The device according to claim 11 or 12, characterized in that the CRS resources and DMRS resources located in the same time domain resource do not overlap in the frequency domain, the DMRS resource is used to transmit DMRS, and the DMRS is used to transmit the DMRS. Describe the channel estimation of NR PDCCH;

Wherein, the DMRS resource includes at least three resource units RE, and the subcarrier spacing between two adjacent REs among the at least three REs is the same.
The device according to claim 11 or 12, characterized in that the CRS resources and DMRS resources located in the same time domain resource do not overlap in the frequency domain, the DMRS resource is used to transmit DMRS, and the DMRS is used to transmit the DMRS. Describe the channel estimation of NR PDCCH;

Wherein, the DMRS resource includes two REs, and the subcarrier spacing between the two REs is the same as the subcarrier spacing between two adjacent DMRS resources.
The device of claim 11 or 12, wherein the DMRS resources include first DMRS resources and second DMRS resources, the CRS resources and the first DMRS resources do not overlap in the frequency domain, and the CRS resources and the The first DMRS resource is located on the first symbol in the time domain, the CRS resource and the second DMRS resource do not overlap in the time domain, the second DMRS resource includes a first RE, and the first DMRS resource includes the second RE and the third RE, wherein the subcarrier spacing between two adjacent REs among the first RE, the second RE and the third RE is the same, and the first RE is located in the time domain a second symbol, the first symbol and the second symbol being consecutive;

The receiving unit is further configured to receive a first DMRS on the first DMRS resource and a second DMRS on the first RE;

The device also includes:

A channel estimation unit, configured to perform channel estimation on the NR PDCCH according to the first DMRS and the second DMRS.
A communication device, characterized by including:

Determining unit, used to determine the downlink physical control channel PDCCH monitoring period and the time domain position of the PDCCH resource;

A sending unit, configured to send resource indication information to the terminal equipment, where the resource indication information is used to indicate the PDCCH listening period and the time domain location of the PDCCH resource, where the PDCCH resource includes at least two symbols in the time domain, And the number of symbols that overlap the PDCCH resource and the cell-specific reference signal CRS resource in the time domain is less than or equal to the first threshold, and the CRS resource is used to transmit Long Term Evolution LTE CRS;

The sending unit is also used to send the new air interface NR PDCCH.
The apparatus according to claim 16, wherein the resource indication information includes the PDCCH listening period, a time slot offset and a symbol position, and the time slot offset is used to indicate where the PDCCH resource is located. The position of the time slot in a PDCCH listening cycle, and the symbol position is used to indicate the position of the PDCCH resource in a time slot.
The device according to claim 16 or 17, characterized in that the CRS resources and DMRS resources located in the same time domain resource do not overlap in the frequency domain, the DMRS resource is used to transmit DMRS, and the DMRS is used for Describe the channel estimation of NR PDCCH;

Wherein, the DMRS resource includes at least three resource units RE, and the subcarrier spacing between two adjacent REs among the at least three REs is the same.
The device according to claim 16 or 17, characterized in that the CRS resources and DMRS resources located in the same time domain resource do not overlap in the frequency domain, the DMRS resource is used to transmit DMRS, and the DMRS is used for Describe the channel estimation of NR PDCCH;

Wherein, the DMRS resource includes two REs, and the subcarrier spacing between the two REs is the same as the subcarrier spacing between two adjacent DMRS resources.
The device of claim 16 or 17, wherein the DMRS resources include first DMRS resources and second DMRS resources, the CRS resources and the first DMRS resources do not overlap in the frequency domain, and the CRS resources and the The first DMRS resource is located on the first symbol in the time domain, the CRS resource and the second DMRS resource do not overlap in the time domain, the second DMRS resource includes a first RE, and the first DMRS resource includes the second RE and the third RE, wherein the subcarrier spacing between two adjacent REs among the first RE, the second RE and the third RE is the same, and the first RE is located in the time domain a second symbol, the first symbol and the second symbol being consecutive;

The sending unit is also configured to send the first DMRS on the first DMRS resource and the second DMRS on the first RE.
A communication device, characterized in that the communication device includes a processor and a memory, the processor is connected to the memory, wherein the memory is used to store a computer program, the computer program includes program instructions, The processor is configured to invoke the program instructions to perform a method as claimed in any one of claims 1 to 5, or to perform a method as claimed in any one of claims 6 to 10.
A chip, characterized in that the chip includes a processor and an interface, the processor is coupled to the interface; the interface is used to receive or output signals, and the processor is used to execute code instructions, so that the claims The method according to any one of claims 1 to 5, or the method according to any one of claims 6 to 10 is performed.
A module device, characterized in that the module device includes a communication module, a power module, a storage module and a chip module, wherein:

The power module is used to provide electrical energy to the module equipment;

The storage module is used to store data and instructions;

The communication module is used for internal communication of the module device, or for communication between the module device and external devices;

The chip module is used to perform the method according to any one of claims 1 to 5, or to perform the method according to any one of claims 6 to 10.
A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program, the computer program includes program instructions, and when executed by a processor, the program instructions implement any of claims 1 to 5. The method described in one of the claims, or the method described in any one of claims 6 to 10.