CN111800794B

CN111800794B - Method and equipment for determining demodulation reference signal position

Info

Publication number: CN111800794B
Application number: CN201910818752.1A
Authority: CN
Inventors: 孙晓东; 塔玛拉卡·拉盖施; 沈晓冬
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2023-12-01
Anticipated expiration: 2039-08-30
Also published as: CN111800794A

Abstract

The embodiment of the application provides a method and equipment for determining the position of a demodulation reference signal (DMRS), relates to the technical field of communication, and aims to solve the problem that when UE is switched in a DSS scene and a non-DSS scene, the UE cannot accurately determine the position of a downlink traffic channel (DMRS). The method comprises the following steps: under the condition that the UE adopts dynamic shared spectrum transmission, determining the occupation position of a downlink service channel (DMRS) as a first DMRS position set; or under the condition that the UE does not adopt dynamic shared spectrum transmission, determining the occupation position of the DMRS of the downlink service channel as a second DMRS position set; the downlink traffic channel DMRS adopts a mapping type B, and the first DMRS position set is different from the second DMRS position set.

Description

Method and equipment for determining demodulation reference signal position

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and apparatus for determining a position of a demodulation reference signal (Demodulation Reference Signal, DMRS).

Background

The fifth generation mobile communication system (5th Generation,5G) supports mobile enhanced broadband, low latency, highly reliable and large-scale machine communication connection services. To accommodate the performance index requirements of different services for latency and reliability, the network supports slot-based scheduling and non-slot-based scheduling. Accordingly, the DMRS mapping of the uplink and downlink traffic channels supports a mapping type a and a mapping type B. In addition, in order to adapt to different scenes such as low frequency and high frequency, low speed and high speed, the uplink and downlink service channel demodulation reference signals can be configured with 1 or 2 symbols.

However, when the UE switches in a dynamic spectrum sharing (Dynamic Spectrum Sharing, DSS) scenario (i.e., the UE employs a dynamic spectrum sharing scenario) and a non-DSS scenario (i.e., the UE does not employ a dynamic spectrum sharing scenario), the UE cannot accurately determine the DMRS position of the downlink traffic channel (e.g., physical downlink shared channel (Physical Downlink Shared Channel, PDSCH)).

Disclosure of Invention

The embodiment of the application provides a method and equipment for determining the position of a DMRS (digital subscriber identity Module), which are used for solving the problem that the position of the DMRS of a downlink service channel cannot be accurately determined by UE (user equipment) when the UE is switched between a DSS (direct sequence receiver) scene and a non-DSS scene.

In order to solve the technical problems, the application is realized as follows:

in a first aspect, an embodiment of the present application provides a method for determining a DMRS position, which is applied to a terminal device, where the method includes: under the condition that the UE adopts dynamic shared spectrum transmission, determining the occupation position of a downlink service channel (DMRS) as a first DMRS position set; or under the condition that the UE does not adopt dynamic shared spectrum transmission, determining the occupation position of the DMRS of the downlink service channel as a second DMRS position set; the downlink traffic channel DMRS adopts a mapping type B, and the first DMRS position set is different from the second DMRS position set.

In a second aspect, an embodiment of the present invention provides a method for determining a DMRS position, which is applied to a network device, where the method includes: and sending first indication information or second indication information to the UE, wherein the first indication information is used for indicating whether the UE adopts dynamic shared spectrum transmission or not, and the second indication information is used for indicating that the UE adopts dynamic shared spectrum transmission.

In a third aspect, an embodiment of the present invention provides a UE, including: the determining module is used for determining that the DMRS occupation position of the downlink traffic channel is a first DMRS position set under the condition that the UE adopts dynamic shared spectrum transmission; or under the condition that the UE does not adopt dynamic shared spectrum transmission, determining the occupation position of the DMRS of the downlink service channel as a second DMRS position set; the downlink traffic channel DMRS adopts a mapping type B, and the first DMRS position set is different from the second DMRS position set.

In a fourth aspect, an embodiment of the present invention provides a network device, including: the sending module is used for sending first indication information or second indication information to the UE, wherein the first indication information is used for indicating whether the UE adopts dynamic shared spectrum transmission or not, and the second indication information is used for indicating that the UE adopts dynamic shared spectrum transmission.

In a fifth aspect, an embodiment of the present invention provides a UE, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program is executed by the processor to implement the steps of the DMRS position determining method according to the first aspect.

In a sixth aspect, an embodiment of the present invention provides a network device, including a processor, a memory, and a computer program stored on the memory and executable on the processor, where the computer program is executed by the processor to implement the steps of the DMRS position determining method according to the second aspect.

In a seventh aspect, embodiments of the present invention provide a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of a method for determining the location of a DMRS as described above.

In the embodiment of the invention, under the condition that the UE adopts dynamic shared spectrum transmission, the UE determines that the occupation position of the DMRS of the downlink service channel adopting the mapping type B is a first DMRS position set, and under the condition that the UE does not adopt dynamic shared spectrum transmission, the UE determines that the occupation position of the DMRS of the downlink service channel adopting the mapping type B is a second DMRS position set, and the first DMRS position set is different from the second DMRS position set. Therefore, the UE can accurately determine the position of the DMRS of the downlink service channel adopting the mapping type B when switching between the DSS scene and the non-DSS scene, and the communication efficiency and efficiency are improved.

Drawings

Fig. 1 is a schematic diagram of one possible configuration of a communication system according to an embodiment of the present application;

fig. 2 is a schematic flow chart of a DMRS position determining method according to an embodiment of the present application;

fig. 3 is a second flowchart of a DMRS position determining method according to an embodiment of the present application;

fig. 4 is a third flowchart of a DMRS position determining method according to an embodiment of the present application;

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

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

fig. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

fig. 8 is a second schematic structural diagram of a network device according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

In this context "/" means "or" for example, a/B may mean a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone.

It should be noted that, in the embodiments of the present application, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

It should be noted that, in the embodiment of the present application, "english" and "corresponding" may sometimes be used in combination, and it should be noted that the meaning of the expression is consistent when the distinction is not emphasized. The meaning of "plurality" in the embodiments of the present application means two or more.

In a 5G communication system, the DMRS of the uplink traffic channel and the downlink traffic channel support a mapping type a and a mapping type B. The downlink traffic channel may be PDSCH.

1) Mapping type A

For example PDSCH DMRS, when the PDSCH DMRS supports map type A, the reference point of the PDSCH DMRS is the 1 st symbol of the slot, and the starting position of the first PDSCH DMRS can be configured on the 2 nd or 3 rd symbol.

2) Mapping type B

For example PDSCH DMRS, when the PDSCH DMRS supports map type B, the reference point of the PDSCH DMRS is the 1 st symbol of the slot, and the starting position of the first PDSCH DMRS can be configured on the 2 nd or 3 rd symbol.

In the long term evolution (Long Term Evolution, LTE) and 5G New Radio (NR) dynamic spectrum sharing scenarios, the DMRS position of the downlink traffic channel (e.g., the physical downlink shared channel (Physical Downlink Shared Channel, PDSCH)) has a defect, for example, the PDSCH DMRS position supporting the mapping type B only supports transmission symbols with lengths of 2,4,6, 7.

In order to solve the above problems, in the method and the device for determining DMRS positions provided in the embodiments of the present invention, when the UE uses dynamic shared spectrum transmission, the UE determines that the DMRS occupation position of the downlink traffic channel using the mapping type B is a first DMRS position set, and when the UE does not use dynamic shared spectrum transmission, the UE determines that the DMRS occupation position of the downlink traffic channel using the mapping type B is a second DMRS position set, where the first DMRS position set is different from the second DMRS position set. Therefore, the UE can accurately determine the position of the DMRS of the downlink service channel adopting the mapping type B when switching between the DSS scene and the non-DSS scene, and the communication efficiency and efficiency are improved.

The technical scheme provided by the embodiment of the invention can be applied to various communication systems, such as a 5G communication system, a future evolution system or a plurality of communication fusion systems and the like. Various application scenarios may be included, such as machine-to-machine (Machine to Machine, M2M), D2M, macro-micro communication, enhanced mobile internet (enhance Mobile Broadband, eMBB), ultra-high reliability and ultra-low latency communication (ultra-low latency & Low Latency Communication, uilllc), and mass internet of things communication (Massive Machine Type Communication, mctc). These scenarios include, but are not limited to: in the scene of communication between terminal equipment and terminal equipment, or communication between network equipment and network equipment, or communication between network equipment and terminal equipment, etc. The embodiment of the invention can be applied to communication between network equipment and terminal equipment in a 5G communication system, or communication between terminal equipment and terminal equipment, or communication between network equipment and network equipment.

Fig. 1 shows a schematic diagram of one possible architecture of a communication system according to an embodiment of the present invention. As shown in fig. 1, the communication system includes at least one network device 10 (only one is shown in fig. 1) and one or more terminal devices 20 to which each network device 10 is connected.

The network device 10 may be a base station, a core network device, a transmitting and receiving node (Transmission and Reception Point, TRP), a relay station, an access point, or the like. The network device 10 may be a base transceiver station (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communication, GSM) or code division multiple access (Code Division Multiple Access, CDMA) network, an NB (NodeB) in wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA), or an eNB or eNodeB (evolutional NodeB) in LTE. The network device 10 may also be a wireless controller in the context of a cloud wireless access network (Cloud Radio Access Network, CRAN). The network device 10 may also be a network device in a 5G communication system or a network device in a future evolution network. The words are not to be interpreted as limiting the invention.

The terminal device 20 may be a wireless terminal device, which may be a device that provides voice and/or other traffic data connectivity to a user, a handheld device with wireless communication functionality, a computing device or other processing device connected to a wireless modem, a vehicle mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolved PLMN network, etc. The wireless Terminal device may communicate with one or more core networks via a radio access network (Radio Access Network, RAN), and may be a Mobile Terminal device, such as a Mobile phone (or "cellular" phone) and a computer with a Mobile Terminal device, e.g., a portable, pocket, hand-held, computer-built-in or vehicle-mounted Mobile device that exchanges voice and/or data with the radio access network, as well as personal communication service (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiation Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistant (Personal Digital Assistant, PDA) and the like, or a Mobile device, a User Equipment (UE), a UE Terminal device, an access Terminal device, a wireless communication device, a Terminal device Unit, a Terminal device Station, a Mobile Station (Mobile Station), a Remote Station (Remote Station), a Remote Terminal device (Remote Terminal), a Subscriber Unit (Subscriber Terminal), a User Agent (universal), a User Agent (Subscriber Station), and the like. As an example, in the embodiment of the present invention, fig. 1 illustrates that the terminal device is a mobile phone.

The method for determining the DMRS position according to the embodiment of the present invention, as shown in fig. 2 and 3, may include the following steps:

for DSS scenarios, as shown in fig. 2, the method for determining the DMRS position may include the following step 201:

step 201: under the condition that the UE adopts dynamic shared spectrum transmission, the UE determines the occupation position of the DMRS of the downlink service channel as a first DMRS position set.

For a non-DSS scenario, as shown in fig. 3, the method for determining the DMRS position may include the following step 202:

step 202: and under the condition that the UE does not adopt dynamic shared spectrum transmission, the UE determines the occupation position of the DMRS of the downlink service channel as a second DMRS position set.

In the embodiment of the present invention, the DMRS of the downlink traffic channel uses a mapping type B.

In the embodiment of the present invention, the downlink traffic channel may be PDSCH.

In the embodiment of the present invention, the first DMRS location set is different from the second DMRS location set, that is, the occupation location of the downlink traffic channel DMRS using the mapping type B in the DSS scene is different from the occupation location in the non-DSS scene.

Optionally, in an embodiment of the invention, in conjunction with fig. 2 or fig. 3, as shown in fig. 4, before the step 201 or the step 202, the method further includes the following steps A1 and A2:

Step A1: the network device sends first indication information to the UE.

Step A2: the UE receives first indication information from the network device.

In the embodiment of the present invention, the first indication information is used to indicate whether the UE adopts dynamic shared spectrum transmission.

In the embodiment of the present invention, when the first indication information is used to indicate that the UE adopts dynamic shared spectrum transmission, it indicates that the UE is currently in a DSS scene; or under the condition that the first indication information is used for indicating that the UE does not adopt dynamic shared spectrum transmission, the UE is indicated to be in a non-DSS scene currently.

Optionally, in the embodiment of the present invention, in a case where the first indication information indicates that the UE adopts dynamic shared spectrum transmission, the first indication information further includes information for indicating any one of the following: 1) A reference signal rate matching pattern configured by the network device for a serving carrier of the UE, 2) a reference signal rate matching pattern configured by the network device for the serving carrier of the UE, and a Bandwidth part (BWP) configured by the network device for the UE overlap with a frequency domain location indicated by the reference signal rate matching pattern. The reference signal rate matching pattern is used for indicating that the target reference signal occupies a target resource of a symbol, and the target resource of the target reference signal occupies a time domain resource and/or a frequency domain resource of the reference signal occupies the symbol. The service carrier corresponding network is dynamically spectrum shared with the target reference signal corresponding network.

Further optionally, the serving carrier of the UE is a serving NR carrier, the target reference signal is LTE-CRS, and the reference signal rate matching pattern is an LTE cell reference signal (LTE-Cell Reference Signal, LTE-CRS) rate matching pattern. That is, the service carrier corresponding network is an NR network, and the target reference signal corresponding network is an LTE network.

Optionally, in the embodiment of the present invention, when the first indication information indicates that the UE uses dynamic shared spectrum transmission, the first indication information further includes information for indicating that the target reference signal occupies a target resource of a symbol, where the target resource of the target reference signal occupies a target resource of the symbol includes a time domain resource and/or a frequency domain resource of the target reference signal occupies a symbol.

Further optionally, in the embodiment of the present invention, if the target reference signal is LTE-CRS, the first indication information further includes information for indicating a target resource of an LTE-CRS occupied symbol, where the target resource of the LTE-CRS occupied symbol includes a time domain resource and/or a frequency domain resource of the LTE-CRS occupied symbol, where the first indication information indicates that the UE adopts dynamic shared spectrum transmission.

Optionally, in the embodiment of the present invention, the case where the UE adopts dynamic shared spectrum transmission in step 201 includes: the UE receives second indication information sent by the network equipment.

Optionally, in the embodiment of the present invention, the case that the UE does not use dynamic shared spectrum transmission in the step 202 includes: the UE does not receive the second indication information.

The second indication information is used for indicating the UE to adopt dynamic shared spectrum transmission.

Optionally, in an embodiment of the present invention, the second indication information includes information for indicating any one of the following: 1) A reference signal rate matching pattern configured by the network device for a serving carrier of the UE, 2) a reference signal rate matching pattern configured by the network device for the serving carrier of the UE, and a BWP configured by the network device for the UE overlap with a frequency domain location indicated by the reference signal rate matching pattern. The reference signal rate matching pattern is used for indicating that the target reference signal occupies a target resource of a symbol, and the target resource of the target reference signal occupies a time domain resource and/or a frequency domain resource of the reference signal occupies the symbol. The service carrier corresponding network is dynamically spectrum shared with the target reference signal corresponding network.

Further optionally, the serving carrier of the UE is a serving NR carrier, the target reference signal is LTE-CRS, and the reference signal rate matching pattern is an LTE-CRS rate matching pattern. That is, the service carrier corresponding network is an NR network, and the target reference signal corresponding network is an LTE network.

Optionally, in the embodiment of the present invention, the second indication information further includes information for indicating that the target reference signal occupies a target resource of a symbol, where the target resource of the target reference signal occupies a target resource of the symbol includes a time domain resource and/or a frequency domain resource of the target reference signal occupies a symbol.

Further optionally, in the embodiment of the present invention, if the target reference signal is LTE-CRS, the second indication information further includes information for indicating a target resource of an LTE-CRS occupied symbol, where the target resource of the LTE-CRS occupied symbol includes a time domain resource and/or a frequency domain resource of the LTE-CRS occupied symbol.

Optionally, in the embodiment of the present invention, if the number of transmission symbols of the downlink traffic channel is 9 and the DMRS of the downlink traffic channel is 1 symbol, the maximum number of additional DMRS of the downlink traffic channel is 3 (i.e., the number of additional DMRS may be 1 or 2 or 3); if the DMRS of the downlink traffic channel is 2 symbols, the maximum number of additional DMRS of the downlink traffic channel is 1.

Optionally, in the embodiment of the present invention, if the number of transmission symbols of the downlink traffic channel is 10 and the DMRS of the downlink traffic channel is 1 symbol, the maximum number of additional DMRS of the downlink traffic channel is 3 (i.e., the number of additional DMRS may be 1 or 2 or 3); if the DMRS of the downlink traffic channel is 2 symbols, the maximum number of additional DMRS of the downlink traffic channel is 1.

It should be noted that, in addition to supporting the scenarios that the number of transmission symbols of the downlink traffic channel is 9 and 10, the scheme provided by the embodiment of the present invention also supports the scenarios that the number of transmission symbols of the downlink traffic channel is other values (for example, any one of values 1 to 14), which is not limited in this embodiment of the present invention.

It should be noted that, in the embodiment of the present invention, the additional DMRS of the downlink traffic channel is generally: additional DMRS in the downlink traffic channel.

It should be noted that, the first DMRS mentioned in the embodiment of the present invention may be referred to as a pre-DMRS.

For the case where the UE employs dynamic shared spectrum transmission (i.e., DSS scenario):

1. in the case that the number of transmission symbols of the downlink traffic channel is 9 or 10, the following description will be given:

1) Optionally, in the embodiment of the present invention, if the DMRS of the downlink traffic channel is 1 symbol and the number of additional DMRS of the downlink traffic channel configured by the network device is 1, the first DMRS location set includes: the 1 st transmission symbol and the 8 th transmission symbol of the downlink traffic channel. For example, the additional DMRS occupation location is a symbol with a traffic channel symbol identifier of 7, and the corresponding first DMRS location set may be {0,7}.

2) Optionally, in the embodiment of the present invention, if the DMRS of the downlink traffic channel is 1 symbol and the number of additional DMRS of the downlink traffic channel configured by the network device is 2 or 3, the first DMRS location set includes: the 1 st transmission symbol, the 5 th transmission symbol, and the 8 th transmission symbol of the downlink traffic channel. For example, the first DMRS position set may be {0,4,7}.

For example, if the number of the additional DMRS configured by the network device is 2 or 3, the DMRS location configuration scheme includes the following scheme 1, scheme 1: the distance between the pre-DMRS occupation symbol and the first additional DMRS occupation symbol is 4, and the distance between the first additional DMRS occupation symbol and the second additional DMRS occupation symbol is 3. The downlink traffic channel DMRS includes: pre-DMRS and all additional DMRS.

For example, in the DSS scenario, when PDSCH DMRS is configured to 1 symbol, PDSCH DMRS positions of 9, 10 of transmission symbols of PDSCH employing the mapping type B are configured with table 1.

TABLE 1

2. Optionally, in the embodiment of the present invention, when the first indication information or the second indication information indicates that the target reference signal occupies the target resource of the symbol, the method for determining the DMRS position provided in the embodiment of the present invention further includes the following step A1:

Step A: if the target DMRS occupancy symbol overlaps with the target resource of the target reference signal occupancy symbol, the UE discards the target DMRS.

Wherein the target DMRS is at least one DMRS of the downlink traffic channel.

For example, taking the LTE-CRS as an example, if the target DMRS occupied symbol overlaps with the target resource of the LTE-CRS occupied symbol in the case where the downlink traffic channel DMRS is 1 symbol and the number of the additional DMRS configured by the network device is 2 or 3, the UE discards the target DMRS. In one example, the first additional DMRS is discarded if the first additional DMRS occupancy symbol overlaps with the target resource of the LTE-CRS occupancy symbol, or the second additional DMRS is discarded if the second additional DMRS occupancy symbol overlaps with the target resource of the LTE-CRS occupancy symbol.

For example, taking the LTE-CRS as an example, in the case that the DMRS of the downlink traffic channel is 2 symbols and the number of the additional DMRS configured by the network device is 1, if any additional DMRS occupation location overlaps with at least 1 symbol of the target resource of the LTE-CRS occupation symbol, the UE discards DMRS of 2 continuous symbols.

For the case where the UE does not employ dynamic shared spectrum transmission (i.e., non-DSS scenario):

3. In the case that the number of transmission symbols of the downlink traffic channel is 9, the following is the case:

1) Optionally, in the embodiment of the present invention, if the number of additional DMRS of the downlink traffic channel configured by the network device is 1, the second DMRS location set includes: the 1 st transmission symbol and the 7 th transmission symbol of the downlink traffic channel. For example, the additional DMRS occupation location is a symbol with a traffic channel symbol identifier of 6, and the corresponding first DMRS location set may be {0,6}.

2) Optionally, in the embodiment of the present invention, if the number of additional DMRS of the downlink traffic channel configured by the network device is 2 or 3, the second DMRS location set includes: the 1 st transmission symbol, 4 th transmission symbol and 7 th transmission symbol of the downlink traffic channel. For example, the first DMRS position set may be {0,3,6}.

4. In the case that the number of transmission symbols of the downlink traffic channel is 10, the following will be described:

1) Optionally, in the embodiment of the present invention, if the number of additional DMRS of the downlink traffic channel configured by the network device is 1, the second DMRS location set includes: the 1 st transmission symbol and the 9 th transmission symbol of the downlink traffic channel. For example, the additional DMRS occupation location is a symbol with a traffic channel symbol identifier of 6, and the corresponding first DMRS location set may be {0,8}.

2) Optionally, in the embodiment of the present invention, if the number of additional DMRS of the downlink traffic channel configured by the network device is 2, the second DMRS location set includes: the 1 st transmission symbol, the 5 th transmission symbol, and the 9 th transmission symbol of the downlink traffic channel. For example, the first DMRS position set may be {0,4,8}.

For example, if the DMRS of the downlink traffic channel is 1 symbol and the number of the additional DMRS configured by the network device is 2, the DMRS location configuration scheme may be scheme 2, scheme 2: the DMRSs of the downlink traffic channel are equally spaced apart by a distance of 4 symbols.

Example 1: the 4 DMRS are arranged at equal intervals in a distance of 4 symbols, and the occupation positions of the 4 DMRS are as follows: {0,4,8}.

3) Optionally, in the embodiment of the present invention, if the number of additional DMRS of the downlink traffic channel configured by the network device is 3, the second DMRS location set includes: the 1 st transmission symbol, the 5 th transmission symbol and the 9 th transmission symbol of the downlink traffic channel; alternatively, the second DMRS position set includes: the 1 st transmission symbol, 4 th transmission symbol, 7 th transmission symbol and 10 th transmission symbol of the downlink traffic channel. For example, the first DMRS position set may be {0,4,8} or {0,3,6,9}.

For example, in the scenario that the number of transmission symbols of the downlink traffic channel is 10 and the number of additional DMRS of the downlink traffic channel configured by the network device is 3, the DMRS location configuration scheme includes at least one of scheme 2 and scheme 3, scheme 2: the DMRS of the downlink traffic channel is arranged at equal intervals with a distance of 3 symbols; scheme 3: if the occupation symbol of the last downlink service channel additional DMRS does not exceed the transmission coincidence range of the service channel, the downlink service channel DMRSs are arranged at equal intervals by a distance of 4 symbols. Wherein, the downlink service channel DMRS includes: pre-DMRS and all additional DMRS.

Example 2: the 4 DMRS are arranged at equal intervals with the distance of 4 symbols, and if the occupation symbol of the additional DMRS of the last downlink service channel exceeds the transmission symbol range of the downlink service channel, the occupation positions of the 4 DMRS are as follows: {0,4,8}.

Example 3: the 4 DMRS are arranged at equal intervals in a distance of 3 symbols, and the occupation positions of the 4 DMRS are as follows: {0,3,6,9}.

For example, in a non-DSS scenario, when PDSCH DMRS is configured to 1 or 2 symbols, PDSCH DMRS positions of 9, 10 of transmission symbols of PDSCH employing the mapping type B are configured with table 2.

TABLE 2

According to the method for determining the DMRS position, the UE determines that the DMRS occupation position of the downlink service channel adopting the mapping type B is the first DMRS position set, and the UE determines that the DMRS occupation position of the downlink service channel adopting the mapping type B is the second DMRS position set under the condition that the UE does not adopt dynamic shared spectrum transmission, wherein the first DMRS position set is different from the second DMRS position set. Therefore, the UE can accurately determine the position of the DMRS of the downlink service channel adopting the mapping type B when switching between the DSS scene and the non-DSS scene, and the communication efficiency and efficiency are improved.

Fig. 5 is a schematic diagram of a possible structure of a UE according to an embodiment of the present invention, as shown in fig. 5, the UE400 includes: a determination module 401, wherein: a determining module 401, configured to determine, in a case where the UE400 adopts dynamic shared spectrum transmission, that a DMRS occupation location of a downlink traffic channel is a first DMRS location set; or, in the case that the UE400 does not employ dynamic shared spectrum transmission, determining that the DMRS occupation location of the downlink traffic channel is the second DMRS location set; the downlink traffic channel DMRS adopts a mapping type B, and the first DMRS position set is different from the second DMRS position set.

Optionally, as shown in fig. 5, the UE further includes: a receiving module 402, wherein: a receiving module, configured to receive first indication information from a network device, where the first indication information is used to indicate whether the UE400 uses dynamic shared spectrum transmission.

Optionally, in the case where the first indication information indicates that the UE400 employs dynamic shared spectrum transmission, the first indication information further includes information for indicating that the target reference signal occupies a target resource of a symbol, where the target resource includes a time domain resource and/or a frequency domain resource.

Optionally, in the case where the first indication information indicates that the UE400 employs dynamic shared spectrum transmission, the first indication information further includes information for indicating any one of the following: the reference signal rate matching pattern configured by the network device for the service carrier of the UE400, the reference signal rate matching pattern, and the BWP configured by the network device for the UE400 overlap with the frequency domain position indicated by the reference signal rate matching pattern; the reference signal rate matching pattern is used for indicating that a target reference signal occupies a target resource of a symbol, and the target resource comprises a time domain resource and/or a frequency domain resource; the service carrier corresponding network and the target reference signal corresponding network are dynamically spectrum shared.

Optionally, the case where the UE400 employs dynamic shared spectrum transmission includes: the UE400 receives second indication information sent by the network device; the UE400 does not use dynamic shared spectrum transmission, which includes: the UE400 does not receive the second indication information; wherein the second indication information is used to instruct the UE400 to employ dynamic shared spectrum transmission.

Optionally, the second indication information further includes information for indicating that the target reference signal occupies a target resource of the symbol, where the target resource includes a time domain resource and/or a frequency domain resource.

Optionally, the second indication information includes information for indicating any one of the following: the reference signal rate matching pattern configured by the network device for the service carrier of the UE400, the reference signal rate matching pattern, and the BWP configured by the network device for the UE400 overlap with the frequency domain position indicated by the reference signal rate matching pattern; the reference signal rate matching pattern is used for indicating that a target reference signal occupies a target resource of a symbol, and the target resource comprises a time domain resource and/or a frequency domain resource; the service carrier corresponding network and the target reference signal corresponding network are dynamically spectrum shared.

Optionally, as shown in fig. 5, the UE400 further includes: an execution module 403, wherein: and an execution module 403, configured to discard the target DMRS if the target DMRS occupation symbol overlaps with the target resource of the target reference signal occupation symbol, where the target DMRS is at least one DMRS of the downlink traffic channel.

Optionally, in the case where the UE400 employs dynamic shared spectrum transmission and the number of transmission symbols of the downlink traffic channel is 9 or 10, if the DMRS of the downlink traffic channel is 1 symbol and the number of additional DMRS of the downlink traffic channel configured in the network device is 1, the first DMRS location set includes: the 1 st transmission symbol and the 8 th transmission symbol of the downlink traffic channel; or if the DMRS of the downlink traffic channel is 1 symbol and the number of additional DMRS of the downlink traffic channel configured by the network device is 2 or 3, the first DMRS position set includes: the 1 st transmission symbol, the 5 th transmission symbol, and the 8 th transmission symbol of the downlink traffic channel.

Optionally, in the case where the UE400 does not employ dynamic shared spectrum transmission and the number of transmission symbols of the downlink traffic channel is 9, if the number of additional DMRS of the downlink traffic channel configured by the network device is 1, the second DMRS location set includes: the 1 st transmission symbol and the 7 th transmission symbol of the downlink traffic channel; or if the number of additional DMRS of the downlink traffic channel configured by the network device is 2 or 3, the second DMRS location set includes: the 1 st transmission symbol, the 4 th transmission symbol and the 7 th transmission symbol of the downlink traffic channel;

Or,

in the case where the UE400 does not employ dynamic shared spectrum transmission and the number of transmission symbols of the downlink traffic channel is 10, if the number of additional DMRS of the downlink traffic channel configured by the network device is 1, the second DMRS location set includes: the 1 st transmission symbol and the 9 th transmission symbol of the downlink traffic channel; or if the number of additional DMRS of the downlink traffic channel configured by the network device is 2, the second DMRS location set includes: the 1 st transmission symbol, the 5 th transmission symbol and the 9 th transmission symbol of the downlink traffic channel; or if the number of additional DMRS of the downlink traffic channel configured by the network device is 3, the second DMRS location set includes: the 1 st transmission symbol, the 5 th transmission symbol, and the 9 th transmission symbol of the downlink traffic channel, or the 1 st transmission symbol, the 4 th transmission symbol, the 7 th transmission symbol, and the 10 th transmission symbol of the downlink traffic channel.

The UE provided by the embodiment of the invention determines that the occupation position of the DMRS of the downlink service channel adopting the mapping type B is a first DMRS position set, and determines that the occupation position of the DMRS of the downlink service channel adopting the mapping type B is a second DMRS position set under the condition that the UE does not adopt dynamic shared spectrum transmission, wherein the first DMRS position set is different from the second DMRS position set. Therefore, the UE can accurately determine the position of the DMRS of the downlink service channel adopting the mapping type B when switching between the DSS scene and the non-DSS scene, and the communication efficiency and efficiency are improved.

The UE provided in the embodiment of the present invention can implement the procedure shown in the foregoing method embodiment, and in order to avoid repetition, details are not repeated here.

It should be noted that, as shown in fig. 5, modules that are necessarily included in the UE400 are illustrated by solid line boxes, such as a determining module 401; the modules that may or may not be included in the UE400 are illustrated with dashed boxes, such as execution module 403.

Fig. 6 is a schematic diagram of a possible structure of a network device according to an embodiment of the present invention, as shown in fig. 6, the network device 500 includes: a transmitting module 501, wherein: the sending module 501 is configured to send first indication information or second indication information to the UE, where the first indication information is used to indicate whether the UE uses dynamic shared spectrum transmission, and the second indication information is used to indicate that the UE uses dynamic shared spectrum transmission.

Optionally, in the case where the first indication information is specifically configured to instruct the UE400 to use dynamic shared spectrum transmission, the first indication information is further configured to indicate that the target reference signal occupies a target resource of a symbol, where the target resource includes a time domain resource and/or a frequency domain resource.

Optionally, in the case where the first indication information is used to indicate that the UE adopts dynamic shared spectrum transmission, the first indication information further includes information for indicating any one of the following: the network equipment configures a reference signal rate matching pattern for a service carrier of the UE, and the reference signal rate matching pattern and BWP configured for the UE by the network equipment overlap with a frequency domain position indicated by the reference signal rate matching pattern; the reference signal rate matching pattern is used for indicating that a target reference signal occupies a target resource of a symbol, and the target resource comprises a time domain resource and/or a frequency domain resource; the service carrier corresponding network and the target reference signal corresponding network are dynamically spectrum shared.

Optionally, the second indication information is further used to indicate that the target reference signal occupies a target resource of the symbol, where the target resource includes a time domain resource and/or a frequency domain resource.

Optionally, the second indication information includes information for indicating any one of the following: the network equipment configures a reference signal rate matching pattern for a service carrier of the UE, and the reference signal rate matching pattern and BWP configured for the UE by the network equipment overlap with a frequency domain position indicated by the reference signal rate matching pattern; the reference signal rate matching pattern is used for indicating that a target reference signal occupies a target resource of a symbol, and the target resource comprises a time domain resource and/or a frequency domain resource; the service carrier corresponding network and the target reference signal corresponding network are dynamically spectrum shared.

According to the network equipment provided by the embodiment of the invention, the network equipment can accurately determine the position of the downlink service channel DMRS adopting the mapping type B based on the indication information after receiving the indication information by sending the first indication information for indicating whether the UE adopts dynamic shared spectrum transmission or the second indication information for indicating that the UE adopts dynamic shared spectrum transmission to the UE.

The network device provided by the embodiment of the present invention can implement the process shown in the above embodiment of the method, and in order to avoid repetition, the description is omitted here.

Taking UE as an example of a terminal device, fig. 7 is a schematic hardware structure of a terminal device for implementing various embodiments of the present invention, where the terminal device 100 includes, but is not limited to: radio frequency unit 101, network module 102, audio output unit 103, input unit 104, sensor 105, display unit 106, user input unit 107, interface unit 108, memory 109, processor 110, and power supply 111. It will be appreciated by those skilled in the art that the structure of the terminal device 100 shown in fig. 7 does not constitute a limitation of the terminal device, and that the terminal device 100 may comprise more or less components than illustrated, or certain components may be combined, or different arrangements of components. In an embodiment of the present invention, the terminal device 100 includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal device, a wearable device, a pedometer, and the like.

The processor 110 is configured to determine that the DMRS occupation location of the downlink traffic channel is the first DMRS location set when the terminal device 100 adopts dynamic shared spectrum transmission; or, in the case that the terminal device 100 does not adopt dynamic shared spectrum transmission, determining that the DMRS occupation location of the downlink traffic channel is the second DMRS location set; the downlink traffic channel DMRS adopts a mapping type B, and the first DMRS position set is different from the second DMRS position set.

The terminal device provided by the embodiment of the invention determines that the occupation position of the downlink service channel DMRS adopting the mapping type B is a first DMRS position set, and determines that the occupation position of the downlink service channel DMRS adopting the mapping type B is a second DMRS position set under the condition that the terminal device does not adopt dynamic shared spectrum transmission, wherein the first DMRS position set is different from the second DMRS position set. Therefore, the terminal equipment can accurately determine the position of the DMRS of the downlink service channel adopting the mapping type B when switching between the DSS scene and the non-DSS scene, and the communication efficiency and efficiency are improved.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 101 may be configured to receive and send information or signals during a call, specifically, receive downlink data from a base station, and then process the received downlink data with the processor 110; and, the uplink data is transmitted to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 101 may also communicate with networks and other devices through a wireless communication system.

Terminal device 100 provides wireless broadband internet access to users, such as helping users send and receive e-mail, browse web pages, access streaming media, etc., via network module 102.

The audio output unit 103 may convert audio data received by the radio frequency unit 101 or the network module 102 or stored in the memory 109 into an audio signal and output as sound. Also, the audio output unit 103 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the terminal device 100. The audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 104 is used for receiving an audio or video signal. The input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042, the graphics processor 1041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 106. The image frames processed by the graphics processor 1041 may be stored in the memory 109 (or other storage medium) or transmitted via the radio frequency unit 101 or the network module 102. Microphone 1042 may receive sound and be capable of processing such sound into audio data. The processed audio data may be converted into a format output that can be transmitted to the mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode.

The terminal device 100 further comprises at least one sensor 105, such as a light sensor, a motion sensor and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 1061 and/or the backlight when the terminal device 100 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when the accelerometer sensor is stationary, and can be used for recognizing the gesture (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking) and the like of the terminal equipment; the sensor 105 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which are not described herein.

The display unit 106 is used to display information input by a user or information provided to the user. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 107 may be used to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the terminal device 100. Specifically, the user input unit 107 includes a touch panel 1071 and other input devices 1072. The touch panel 1071, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch panel 1071 or thereabout using any suitable object or accessory such as a finger, stylus, etc.). The touch panel 1071 may include two parts of a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts the touch information into touch point coordinates, and sends the touch point coordinates to the processor 110, and receives and executes commands sent by the processor 110. Further, the touch panel 1071 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 107 may include other input devices 1072 in addition to the touch panel 1071. In particular, other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 1071 may be overlaid on the display panel 1061, and when the touch panel 1071 detects a touch operation thereon or nearby, the touch operation is transmitted to the processor 110 to determine the type of touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of touch event. Although in fig. 7, the touch panel 1071 and the display panel 1061 are two independent components to implement the input and output functions of the terminal device 100, in some embodiments, the touch panel 1071 may be integrated with the display panel 1061 to implement the input and output functions of the terminal device 100, which is not limited herein.

The interface unit 108 is an interface to which an external device is connected to the terminal apparatus 100. For example, the external devices may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal apparatus 100 or may be used to transmit data between the terminal apparatus 100 and an external device.

Memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a storage program area that may store an operating system, application programs required for at least one function (such as a sound playing function, an image playing function, etc.), and a storage data area; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The processor 110 is a control center of the terminal device 100, connects respective parts of the entire terminal device 100 using various interfaces and lines, and performs various functions of the terminal device 100 and processes data by running or executing software programs and/or modules stored in the memory 109 and calling data stored in the memory 109, thereby performing overall monitoring of the terminal device 100. Processor 110 may include one or more processing units; alternatively, the processor 110 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 110.

The terminal device 100 may further include a power source 111 (e.g., a battery) for supplying power to the respective components, and optionally, the power source 111 may be logically connected to the processor 110 through a power management system, so as to implement functions of managing charging, discharging, and power consumption management through the power management system.

In addition, the terminal device 100 includes some functional modules, which are not shown, and will not be described herein.

Fig. 8 is a schematic hardware structure of a network device implementing an embodiment of the present invention, where the network device 800 includes: a processor 801, a transceiver 802, a memory 803, a user interface 804, and a bus interface.

The transceiver 802 is configured to send first indication information or second indication information to the UE, where the first indication information is used to indicate whether the UE uses dynamic shared spectrum transmission, and the second indication information is used to indicate that the UE uses dynamic shared spectrum transmission.

In the embodiment of the invention, in FIG. 8, the bus architecture may comprise any number of interconnecting buses and bridges, and in particular one or more processors represented by the processor 801 and various circuits of memory represented by the memory 803 are linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 802 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 804 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc. The processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 801 in performing operations.

In addition, the network device 800 further includes some functional modules, which are not shown, and are not described herein.

Optionally, an embodiment of the present invention further provides a terminal device, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program when executed by the processor implements a process of the DMRS position determining method in the first embodiment, and the process can achieve the same technical effect, so that repetition is avoided, and no further description is given here.

Optionally, an embodiment of the present invention further provides a network device, including a processor, a memory, and a computer program stored in the memory and capable of running on the processor, where the computer program when executed by the processor implements a process of the DMRS position determining method in the first embodiment, and the process can achieve the same technical effect, so that repetition is avoided, and no further description is given here.

The embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements a plurality of processes of the DMRS position determining method in the foregoing embodiment, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here. The computer readable storage medium includes Read-Only Memory (ROM), random access Memory (Random Access Memory RAM), magnetic disk or optical disk, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A method for determining a position of a demodulation reference signal DMRS, which is applied to a user equipment UE, the method comprising:

receiving third indication information from network side equipment, wherein the third indication information is first indication information or second indication information; the first indication information is used for indicating whether the UE adopts dynamic shared spectrum transmission or not, and the second indication information is used for indicating that the UE adopts dynamic shared spectrum transmission; the third indication information is further used for indicating a reference signal rate matching pattern configured by the network device for a service carrier of the UE when the third indication information indicates that the UE adopts dynamic shared spectrum transmission; the reference signal rate matching pattern is used for indicating that a target reference signal occupies target resources of a symbol, and the target resources comprise at least one of time domain resources and frequency domain resources;

under the condition that the UE adopts dynamic shared spectrum transmission, determining the occupation position of a downlink service channel (DMRS) as a first DMRS position set; wherein, the DMRS adopts a mapping type B; in the case where the UE adopts dynamic shared spectrum transmission and the number of transmission symbols of the downlink traffic channel is 10, if the DMRS is 1 symbol and the number of additional DMRS of the downlink traffic channel configured by the network device is 2 or 3, the first DMRS location set includes: the 1 st transmission symbol, the 5 th transmission symbol and the 8 th transmission symbol of the downlink traffic channel.

2. The method of claim 1, wherein the reference signal rate matching pattern, and wherein the bandwidth portion BWP configured by the network device for the UE, overlap with a frequency domain location indicated by the reference signal rate matching pattern;

the service carrier corresponding network is dynamically spectrum shared with the target reference signal corresponding network.

3. The method according to claim 1, wherein the method further comprises:

and if the target DMRS occupation symbol overlaps with the target resource of the target reference signal occupation symbol, discarding the target DMRS, wherein the target DMRS is at least one DMRS of the downlink traffic channel.

4. A method for determining a position of a demodulation reference signal DMRS, applied to a network device, the method comprising:

transmitting third indication information to User Equipment (UE), wherein the third indication information is the first indication information or the second indication information;

the first indication information is used for indicating whether the UE adopts dynamic shared spectrum transmission or not, and the second indication information is used for indicating that the UE adopts dynamic shared spectrum transmission;

the third indication information is further used for indicating a reference signal rate matching pattern configured by the network device for a service carrier of the UE when the third indication information indicates that the UE adopts dynamic shared spectrum transmission; the reference signal rate matching pattern is used for indicating that a target reference signal occupies target resources of a symbol, and the target resources comprise at least one of time domain resources and frequency domain resources;

In the case that the UE adopts dynamic shared spectrum transmission and the number of transmission symbols of a downlink traffic channel is 10, if the DMRS is 1 symbol and the number of additional DMRS of the downlink traffic channel configured by a network device is 2 or 3, the first DMRS location set includes: the 1 st transmission symbol, the 5 th transmission symbol and the 8 th transmission symbol of the downlink traffic channel.

5. The method of claim 4, wherein the reference signal rate matching pattern, and wherein the bandwidth portion BWP configured by the network device for the UE, overlap with the frequency domain location indicated by the reference signal rate matching pattern;

6. A user equipment, UE, characterized in that the UE comprises:

the receiving module is used for receiving third indication information from the network side equipment, wherein the third indication information is the first indication information or the second indication information; the first indication information is used for indicating whether the UE adopts dynamic shared spectrum transmission or not, and the second indication information is used for indicating that the UE adopts dynamic shared spectrum transmission; the third indication information is further used for indicating a reference signal rate matching pattern configured by the network device for a service carrier of the UE when the third indication information indicates that the UE adopts dynamic shared spectrum transmission; the reference signal rate matching pattern is used for indicating that a target reference signal occupies target resources of a symbol, and the target resources comprise at least one of time domain resources and frequency domain resources;

A determining module, configured to determine, when the UE adopts dynamic shared spectrum transmission, that a DMRS occupation location of a downlink traffic channel is a first DMRS location set;

wherein, the DMRS adopts a mapping type B; in the case where the UE adopts dynamic shared spectrum transmission and the number of transmission symbols of the downlink traffic channel is 10, if the DMRS is 1 symbol and the number of additional DMRS of the downlink traffic channel configured by the network device is 2 or 3, the first DMRS location set includes: the 1 st transmission symbol, the 5 th transmission symbol and the 8 th transmission symbol of the downlink traffic channel.

7. A network device, the network device comprising:

the device comprises a sending module, a receiving module and a receiving module, wherein the sending module is used for sending third indication information to User Equipment (UE), the third indication information is first indication information or second indication information, the first indication information is used for indicating whether the UE adopts dynamic shared spectrum transmission or not, and the second indication information is used for indicating that the UE adopts dynamic shared spectrum transmission; the third indication information is further used for indicating a reference signal rate matching pattern configured by the network device for a service carrier of the UE when the third indication information indicates that the UE adopts dynamic shared spectrum transmission; the reference signal rate matching pattern is used for indicating that a target reference signal occupies target resources of a symbol, and the target resources comprise at least one of time domain resources and frequency domain resources;

In the case where the UE adopts dynamic shared spectrum transmission and the number of transmission symbols of a downlink traffic channel is 10, if the DMRS is 1 symbol and the number of additional DMRS of the downlink traffic channel configured by the network device is 2 or 3, the first DMRS location set includes: the 1 st transmission symbol, the 5 th transmission symbol and the 8 th transmission symbol of the downlink traffic channel.

8. A user equipment, UE, characterized by comprising a processor, a memory and a computer program stored on the memory and executable on the processor, which when executed by the processor realizes the steps of the DMRS position determination method according to any of claims 1 to 3.

9. A network device comprising a processor, a memory and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of the method of determining the location of a DMRS according to claim 4 or 5.

10. A computer readable storage medium, characterized in that it stores thereon a computer program, which when executed by a processor, implements the steps of the DMRS position determining method according to any of claims 1 to 3 or claim 4 or 5.