CN111800794A - Method and device for determining position of demodulation reference signal - Google Patents

Abstract

The embodiment of the invention 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 UE cannot accurately determine the position of the DMRS of a downlink service channel when the UE is switched between a DSS (direct sequence digital subscriber identity) scene and a non-DSS scene. The method comprises the following steps: under the condition that the UE adopts dynamic shared spectrum transmission, determining DMRS (demodulation reference signals) occupied positions of a downlink service channel as a first DMRS position set; or, under the condition that the UE does not adopt dynamic shared spectrum transmission, determining that the DMRS occupation position of the downlink traffic channel is a second DMRS position set; and 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 device for determining position of demodulation reference signal

technical field

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

Background technique

The fifth generation mobile communication system (5th Generation, 5G) supports mobile enhanced broadband, low latency, high reliability, and large-scale machine communication connection services. In order to meet the requirements of different services for performance indicators such as delay and reliability, the network supports time-slot-based scheduling and non-slot-based scheduling. Correspondingly, mapping type A and mapping type B are supported for uplink and downlink traffic channel DMRS mapping. In addition, in order to adapt to different scenarios such as low frequency and high frequency, low speed and high speed, the uplink and downlink traffic channel demodulation reference signals can be configured with 1 or 2 symbols.

However, when the UE switches between the dynamic spectrum sharing (Dynamic Spectrum Sharing, DSS) scenario (ie, the UE adopts the dynamic spectrum sharing scenario) and the non-DSS scenario (ie, the UE does not adopt the dynamic spectrum sharing scenario), the UE cannot accurately determine The DMRS location of the downlink traffic channel (eg, Physical Downlink Shared Channel (PDSCH)) is output.

SUMMARY OF THE INVENTION

Embodiments of the present invention provide a method and device for determining a DMRS location, so as to solve the problem that the UE cannot accurately determine the DMRS location of a downlink traffic channel when the UE switches between a DSS scenario and a non-DSS scenario.

In order to solve the above technical problems, this application is implemented as follows:

In a first aspect, an embodiment of the present invention provides a method for determining a DMRS position, which is applied to a terminal device. The method includes: in the case where the UE adopts dynamic shared spectrum transmission, determining a downlink traffic channel DMRS occupied position as a first DMRS position set; or, in the case where the UE does not use dynamic shared spectrum transmission, it is determined that the downlink traffic channel DMRS occupied position is the second DMRS position set; wherein, the downlink traffic channel DMRS adopts the mapping type B, and the first DMRS position set and the second DMRS position set The set of locations is different.

In a second aspect, an embodiment of the present invention provides a method for determining a DMRS location, which is applied to a network device. The method includes: sending first indication information or second indication information to a UE, where the first indication information is used to indicate whether the UE adopts the For dynamic shared spectrum transmission, the second indication information is used to instruct the UE to use dynamic shared spectrum transmission.

In a third aspect, an embodiment of the present invention provides a UE, including: a determination module, configured to determine a downlink traffic channel DMRS occupied position as a first DMRS position set when the UE adopts dynamic shared spectrum transmission; or, in the UE In the case where dynamic shared spectrum transmission is not used, the occupied location of the downlink traffic channel DMRS is determined as the second DMRS location set; wherein, the downlink traffic channel DMRS adopts the mapping type B, and the first DMRS location set is different from the second DMRS location set.

In a fourth aspect, an embodiment of the present invention provides a network device, including: a sending module configured to send first indication information or second indication information to a UE, where the first indication information is used to indicate whether the UE adopts dynamic shared spectrum transmission, The second indication information is used to instruct the UE to use 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, when the computer program is executed by the processor The steps of implementing the method for determining the location of the DMRS 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, when the computer program is executed by the processor The steps of implementing the method for determining the location of the DMRS according to the second aspect.

In a seventh aspect, an embodiment of the present invention provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, implements the steps of the above-mentioned method for determining the location of the DMRS.

In the embodiment of the present invention, when the UE adopts dynamic shared spectrum transmission, the UE determines that the downlink traffic channel DMRS using mapping type B occupies the first DMRS position set, and when the UE does not use dynamic shared spectrum transmission , the UE determines that the occupied position of the downlink traffic channel DMRS using the mapping type B is the second DMRS position set, and the first DMRS position set is different from the second DMRS position set. In this way, the UE can accurately determine the location of the downlink traffic channel DMRS using the mapping type B when switching between the DSS scenario and the non-DSS scenario, which improves communication efficiency and effectiveness.

Description of drawings

FIG. 1 is a schematic diagram of a possible structure of a communication system involved in an embodiment of the present invention;

2 is one of the schematic flowcharts of a method for determining a DMRS location provided by an embodiment of the present invention;

3 is a second schematic flowchart of a method for determining a DMRS location provided by an embodiment of the present invention;

4 is a third schematic flowchart of a method for determining a DMRS location provided by an embodiment of the present invention;

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

FIG. 6 is one of schematic structural diagrams of a network device according to an embodiment of the present invention;

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

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

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

It should be noted that “/” in this document means or, for example, A/B can mean A or B; “and/or” in this document is only an association relationship that describes an associated object, indicating that there may be three A relationship, for example, A and/or B, can mean the existence of A alone, the existence of both A and B, and the existence of B alone.

It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "for example" are used to represent examples, illustrations, or descriptions. Any embodiments or designs described as "exemplary" or "such as" in the embodiments of the present invention should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present the related concepts in a specific manner.

It should be noted that, in the embodiments of the present application, "of", "corresponding (English: corresponding, relevant)" and "corresponding (English: corresponding)" can sometimes be mixed. It should be noted that, When not emphasizing their differences, their intended meanings are the same. The meaning of "plurality" in the embodiments of the present application refers to two or more.

In the 5G communication system, the uplink traffic channel and the downlink traffic channel DMRS support mapping type A and mapping type B. Wherein, the above-mentioned downlink traffic channel may be PDSCH.

1) Mapping type A

Taking the PDSCH DMRS as an example, when the PDSCH DMRS supports mapping type A, the reference point of the PDSCH DMRS is the first symbol of the time slot, and the starting position of the first PDSCH DMRS can be configured in the second or third symbol superior.

2) Mapping type B

Taking the PDSCH DMRS as an example, when the PDSCH DMRS supports mapping type B, the reference point of the PDSCH DMRS is the first symbol of the time slot, and the starting position of the first PDSCH DMRS can be configured in the second or third symbol superior.

In the scenarios of Long Term Evolution (LTE) and 5G New Radio (New Radio, NR) dynamic spectrum sharing, the location of the DMRS on the downlink traffic channel (eg, Physical Downlink Shared Channel (PDSCH)) is defective. For example, the PDSCH DMRS positions that support mapping type B only support transmission symbols with lengths of 2, 4, 6, and 7.

In order to solve the above problem, in the method and device for determining the DMRS position provided by the embodiments of the present invention, when the UE adopts dynamic shared spectrum transmission, the UE determines that the occupied position of the downlink traffic channel DMRS using the mapping type B is the first DMRS position set , in the case where the UE does not use dynamic shared spectrum transmission, the UE determines that the downlink traffic channel DMRS occupied position using mapping type B is the second DMRS position set, and the first DMRS position set is different from the second DMRS position set. In this way, the UE can accurately determine the location of the downlink traffic channel DMRS using the mapping type B when switching between the DSS scenario and the non-DSS scenario, which improves communication efficiency and effectiveness.

The technical solutions provided by the embodiments of the present invention can be applied to various communication systems, for example, a 5G communication system, a future evolution system, or a variety of communication fusion systems, and so on. It can include a variety of application scenarios, such as machine to machine (M2M), D2M, macro-micro communication, enhanced mobile Internet (enhance Mobile Broadband, eMBB), ultra-reliable & low-latency communication (ultra Reliable & Low Latency Communication (uRLLC) and Massive Machine Type Communication (mMTC) and other scenarios. These scenarios include but are not limited to scenarios such as communication between terminal devices, or communication between network devices and network devices, or communication between network devices and terminal devices. The embodiments of the present invention can be applied to communication between a network device and a terminal device in a 5G communication system, or between a terminal device and a terminal device, or between a network device and a network device.

FIG. 1 shows a possible schematic structural diagram of a communication system involved in 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 connected to each network device 10 .

The above-mentioned network device 10 may be a base station, a core network device, a transmission and reception point (Transmission and Reception Point, TRP), a relay station, an access point, and the like. The network device 10 may be a base transceiver station (Base Transceiver Station, BTS) in a global system for mobile communication (Global System for Mobile communication, GSM) or a code division multiple access (Code Division Multiple Access, CDMA) network, or a wideband code The NB (NodeB) in Wideband Code Division Multiple Access (WCDMA) may also be an eNB or an eNodeB (evolutional NodeB) in LTE. The network device 10 may also be a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN) scenario. The network device 10 may also be a network device in a 5G communication system or a network device in a future evolution network. However, the use of words does not constitute a limitation of the present invention.

The terminal device 20 can be a wireless terminal device or a wired terminal device, and the wireless terminal device can be a device that provides voice and/or other service data connectivity to a user, a handheld device with wireless communication function, a computing device, or a wireless communication device. Other processing equipment of the modem, in-vehicle equipment, wearable equipment, terminal equipment in the future 5G network or terminal equipment in the future evolved PLMN network, etc. Wireless terminal equipment can communicate with one or more core networks via a Radio Access Network (RAN), and the wireless terminal equipment can be mobile terminal equipment such as mobile phones (or "cellular" phones) and mobile The computer of the device, for example, may be a portable, pocket-sized, hand-held, computer-built-in or vehicle-mounted mobile device that exchanges language and/or data with the radio access network, as well as Personal Communication Service (PCS) telephones , cordless phones, Session Initiation Protocol (Session Initiation Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDA) and other devices, the wireless terminal device can also be a mobile device , User Equipment (UE), UE terminal equipment, access terminal equipment, wireless communication equipment, terminal equipment unit, terminal equipment station, mobile station (Mobile Station), mobile station (Mobile), remote station (RemoteStation), A remote station, a remote terminal, a subscriber unit, a subscriber station, a user agent, a terminal device, and the like. As an example, in the embodiment of the present invention, FIG. 1 shows that the terminal device is a mobile phone as an example.

A method for determining a DMRS position provided by an embodiment of the present invention, as shown in FIGS. 2 and 3 , the method for determining a DMRS position may include the following steps:

For a DSS scenario, as shown in FIG. 2 , the method for determining the DMRS location may include the following steps 201:

Step 201: In the case that the UE adopts the dynamic shared spectrum transmission, the UE determines that the downlink traffic channel DMRS occupied position is the 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: In the case where the UE does not use the dynamic shared spectrum transmission, the UE determines that the downlink traffic channel DMRS occupied position is the second DMRS position set.

In the embodiment of the present invention, the above-mentioned downlink traffic channel DMRS adopts the mapping type B.

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

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

Optionally, in this embodiment of the invention, with reference to FIG. 2 or FIG. 3 , as shown in FIG. 4 , before the foregoing step 201 or 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 the first indication information from the network device.

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

In the embodiment of the present invention, when the above-mentioned first indication information is used to instruct the UE to use dynamic shared spectrum transmission, it indicates that the UE is currently in a DSS scenario; or, in the case where the above-mentioned first indication information is used to instruct the UE not to use dynamic shared spectrum transmission In the case of shared spectrum transmission, it indicates that the UE is currently in a non-DSS scenario.

Optionally, in this embodiment of the present invention, in the case where the above-mentioned first indication information indicates that the UE adopts dynamic shared spectrum transmission, the above-mentioned first indication information further includes information used to indicate any one of the following: 1) network equipment The reference signal rate matching pattern configured for the serving carrier of the UE, 2) the reference signal rate matching pattern configured by the network device for the serving carrier of the UE, and the bandwidth part (Bandwidth part, BWP) configured by the network device for the UE and the reference signal rate The frequency domain positions indicated by the matching patterns overlap. The above reference signal rate matching pattern is used to indicate target resources of symbols occupied by target reference signals, and the target resources of symbols occupied by target reference signals include time domain resources and/or frequency domain resources of symbols occupied by reference signals. The network corresponding to the serving carrier and the network corresponding to the target reference signal are dynamic spectrum sharing.

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

Optionally, in this embodiment of the present invention, in the case where the above-mentioned first indication information indicates that the UE adopts dynamic shared spectrum transmission, the above-mentioned first indication information further includes information used to indicate the target resource of the symbol occupied by the target reference signal, The above-mentioned target resource of the symbol occupied by the target reference signal includes the time domain resource and/or the frequency domain resource of the symbol occupied by the target reference signal.

Further optionally, in this embodiment of the present invention, if the above-mentioned target reference signal is an LTE-CRS, in the case that the above-mentioned first indication information indicates that the UE adopts dynamic shared spectrum transmission, the above-mentioned first indication information further includes: For the information indicating the target resources of the LTE-CRS occupied symbols, the above-mentioned target resources of the LTE-CRS occupied symbols include time domain resources and/or frequency domain resources of the LTE-CRS occupied symbols.

Optionally, in the embodiment of the present invention, the situation in which the UE adopts dynamic shared spectrum transmission in the foregoing step 201 includes: the UE receives the second indication information sent by the network device.

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

Wherein, the above-mentioned second indication information is used to instruct the UE to use dynamic shared spectrum transmission.

Optionally, in this embodiment of the present invention, the above-mentioned second indication information includes information used to indicate any of the following: 1) the reference signal rate matching pattern configured by the network device for the serving carrier of the UE, 2) the network device is The reference signal rate matching pattern configured on the serving carrier of the UE and the BWP configured by the network device for the UE overlap with the frequency domain position indicated by the reference signal rate matching pattern. The above reference signal rate matching pattern is used to indicate target resources of symbols occupied by target reference signals, and the target resources of symbols occupied by target reference signals include time domain resources and/or frequency domain resources of symbols occupied by reference signals. The network corresponding to the serving carrier and the network corresponding to the target reference signal are dynamic spectrum sharing.

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

Optionally, in this embodiment of the present invention, the above-mentioned second indication information further includes information used to indicate the target resource of the target reference signal occupied symbol, and the above-mentioned target resource of the target reference signal occupied symbol includes the target reference signal occupied symbol. Time domain resources and/or frequency domain resources.

Further optionally, in this embodiment of the present invention, if the above-mentioned target reference signal is an LTE-CRS, the above-mentioned second indication information further includes information used to indicate the target resource of the symbol occupied by the LTE-CRS, and the above-mentioned LTE-CRS The target resources of the occupied symbols include time domain resources and/or frequency domain resources of the occupied symbols of the LTE-CRS.

Optionally, in this embodiment of the present invention, in the case that the number of transmission symbols of the above-mentioned downlink traffic channel is 9, if the above-mentioned downlink traffic channel DMRS is 1 symbol, the maximum number of additional DMRSs of the downlink traffic channel is: 3 (that is, the number of additional DMRSs may be 1, 2, or 3); if the above-mentioned downlink traffic channel DMRS is 2 symbols, the maximum number of additional DMRSs of the downlink traffic channel is 1.

Optionally, in this embodiment of the present invention, in the case that the number of transmission symbols of the above-mentioned downlink traffic channel is 10, if the above-mentioned downlink traffic channel DMRS is 1 symbol, the maximum number of additional DMRSs of the downlink traffic channel is: 3 (that is, the number of additional DMRSs may be 1, 2, or 3); if the above-mentioned downlink traffic channel DMRS is 2 symbols, the maximum number of additional DMRSs of the downlink traffic channel is 1.

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

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

For the case where the UE adopts dynamic shared spectrum transmission (ie DSS scenario):

1. When the number of transmission symbols of the above-mentioned downlink traffic channel is 9 or 10:

1), optionally, in this embodiment of the present invention, if the above-mentioned downlink traffic channel DMRS is 1 symbol, and the number of additional DMRSs of the downlink traffic channel configured by the network device is 1, then the above-mentioned first DMRS location set includes: The first transmission symbol and the eighth transmission symbol of the downlink traffic channel. For example, the above-mentioned additional DMRS occupied position is a symbol whose traffic channel symbol identifier is 7, and the corresponding above-mentioned first DMRS position set may be {0, 7}.

2) Optionally, in this embodiment of the present invention, if the above-mentioned downlink traffic channel DMRS is 1 symbol, and the number of additional DMRSs of the downlink traffic channel configured by the network device is 2 or 3, then the above-mentioned first DMRS location set It includes: the first transmission symbol, the fifth transmission symbol and the eighth transmission symbol of the downlink traffic channel. For example, the above-mentioned first set of DMRS locations may be {0, 4, 7}.

Exemplarily, if the number of the above-mentioned additional DMRSs 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 occupied symbol and the first additional DMRS occupied symbol is 4 , the distance between the first extra DMRS occupied symbol and the second extra DMRS occupied symbol is 3. Wherein, the above-mentioned downlink traffic channel DMRS includes: the preamble DMRS and all additional DMRSs.

For example, in the DSS scenario, when the PDSCH DMRS is configured as 1 symbol, the PDSCH DMRS positions of which the number of transmission symbols of the PDSCH of the mapping type B is 9 and 10 are configured according to Table 1.

Table 1

2. Optionally, in the embodiment of the present invention, in the case that the above-mentioned 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 by the embodiment of the present invention further includes: The following steps A1:

Step A: If the target DMRS occupied symbol and the target resource of the target reference signal occupied symbol overlap, the UE discards the target DMRS.

Wherein, the above-mentioned target DMRS is at least one DMRS of the downlink traffic channel.

Exemplarily, taking the target reference signal as an LTE-CRS as an example, in the case that the above-mentioned downlink traffic channel DMRS is 1 symbol, and the number of the above-mentioned additional DMRS configured by the network device is 2 or 3, if the target DMRS occupies the symbol and If the target resources of LTE-CRS occupied symbols overlap, the UE discards the above target DMRS. In one example, if the first extra DMRS occupied symbol overlaps with the target resource of the LTE-CRS occupied symbol, the first extra DMRS is discarded, or, if the second extra DMRS occupied symbol and the LTE-CRS occupied symbol are the same If the target resources overlap, the second extra DMRS is discarded.

Exemplarily, taking the target reference signal as an LTE-CRS as an example, in the case that the downlink traffic channel DMRS is 2 symbols and the number of the above-mentioned additional DMRS configured by the network device is 1, if any additional DMRS occupied position is the same as this one. If the target resource of the symbols occupied by the LTE-CRS overlaps by at least one symbol, the UE discards the DMRS of two consecutive symbols.

For the case where the UE does not use dynamic shared spectrum transmission (ie, non-DSS scenarios):

3. In the case that the number of transmission symbols of the above-mentioned downlink traffic channel is 9:

1) Optionally, in this embodiment of the present invention, if the number of additional DMRSs of the downlink traffic channel configured by the network device is 1, the above-mentioned second set of DMRS locations includes: the first transmission symbol and the first transmission symbol of the downlink traffic channel. 7 transmit symbols. For example, the above-mentioned additional DMRS occupied position is a symbol whose traffic channel symbol identifier is 6, and the corresponding above-mentioned first DMRS position set may be {0, 6}.

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

4. When the number of transmission symbols of the above-mentioned downlink traffic channel is 10:

1) Optionally, in this embodiment of the present invention, if the number of additional DMRSs of the downlink traffic channel configured by the network device is 1, the above-mentioned second set of DMRS locations includes: the first transmission symbol and the first transmission symbol of the downlink traffic channel. 9 transmit symbols. For example, the above-mentioned additional DMRS occupied position is a symbol whose traffic channel symbol identifier is 6, and the corresponding above-mentioned first DMRS position set may be {0, 8}.

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

Exemplarily, if the above-mentioned downlink traffic channel DMRS is 1 symbol, and the number of the above-mentioned additional DMRS configured by the network device is 2, the DMRS location configuration scheme may be scheme 2. The distance of the symbols is equidistantly configured.

Example 1: A total of 4 DMRSs of the pre-DMRS and the additional DMRS are arranged at equal intervals with a distance of 4 symbols, and the occupied positions of the above-mentioned 4 DMRSs are: {0, 4, 8}.

3) Optionally, in this embodiment of the present invention, if the number of additional DMRSs of the downlink traffic channel configured by the network device is 3, the above-mentioned second DMRS location set includes: the first transmission symbol of the downlink traffic channel, the first The fifth transmission symbol and the ninth transmission symbol; or, the second DMRS location set includes: the first transmission symbol, the fourth transmission symbol, the seventh transmission symbol, and the tenth transmission symbol of the downlink traffic channel. For example, the above-mentioned first set of DMRS locations may be {0, 4, 8} or {0, 3, 6, 9}.

Exemplarily, in the scenario where the number of transmission symbols of the above-mentioned downlink traffic channel is 10 and the number of additional DMRSs 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 downlink traffic channel DMRSs are configured at equal intervals with a distance of 3 symbols; Scheme 3: If the additional DMRS occupied symbols of the last downlink traffic channel do not exceed the traffic channel transmission compliance range, the downlink traffic channel DMRSs are separated by 4 symbols. The distance of the symbols is equally spaced. Wherein, the above-mentioned downlink traffic channel DMRS includes: the preamble DMRS and all additional DMRSs.

Example 2: A total of 4 DMRSs, including the pre-DMRS and the additional DMRS, are arranged at equal intervals with a distance of 4 symbols. If the additional DMRS occupied symbol of the last downlink traffic channel exceeds the transmission symbol range of the downlink traffic channel, the above 4 DMRSs occupy the The positions are: {0, 4, 8}.

Example 3: A total of 4 DMRSs of the pre-DMRS and the additional DMRS are arranged at equal intervals with a distance of 3 symbols, and the occupied positions of the above-mentioned 4 DMRSs are: {0, 3, 6, 9}.

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

Table 2

In the method for determining the DMRS position provided by the embodiment of the present invention, the UE determines that the downlink traffic channel DMRS occupied position of the mapping type B is the first DMRS position set, and the UE determines to use the mapping when the UE does not use the dynamic shared spectrum transmission. The downlink traffic channel DMRS occupation position of type B is the second DMRS position set, and the first DMRS position set is different from the second DMRS position set. In this way, the UE can accurately determine the location of the downlink traffic channel DMRS using the mapping type B when switching between the DSS scenario and the non-DSS scenario, which improves communication efficiency and effectiveness.

FIG. 5 is a schematic diagram of a possible structure for implementing a UE provided by an embodiment of the present invention. As shown in FIG. 5 , the UE 400 includes: a determination module 401 , wherein: the determination module 401 is used for the UE 400 using dynamic shared spectrum transmission. Next, determine that the downlink traffic channel DMRS occupied position is the first DMRS position set; or, in the case where the UE400 does not use dynamic shared spectrum transmission, determine that the downlink traffic channel DMRS occupied position is the second DMRS position set; wherein, the downlink traffic channel DMRS With mapping type B, the first set of DMRS locations is different from the second set of DMRS locations.

Optionally, as shown in FIG. 5 , the UE further includes: a receiving module 402, wherein: the receiving module is configured to receive first indication information from the network device, where the first indication information is used to indicate whether the UE 400 adopts dynamic shared spectrum transmission .

Optionally, in the case where the above-mentioned first indication information indicates that the UE 400 adopts dynamic shared spectrum transmission, the above-mentioned first indication information further includes information for indicating the target resource of the symbol occupied by the target reference signal, and the target resource includes time domain resources and /or frequency domain resources.

Optionally, in the case where the above-mentioned first indication information indicates that the UE400 adopts dynamic shared spectrum transmission, the above-mentioned first indication information further includes information used to indicate any one of the following: the reference signal rate configured by the network device for the serving carrier of the UE400; The matching pattern, 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; wherein, the above-mentioned reference signal rate matching pattern is used to indicate that the target reference signal occupies the target resource of the symbol , the target resources include time domain resources and/or frequency domain resources; the network corresponding to the serving carrier and the network corresponding to the target reference signal dynamic spectrum sharing.

Optionally, the above-mentioned situation that the UE400 adopts the dynamic shared spectrum transmission includes: the UE400 receives the second indication information sent by the network device; the above-mentioned situation that the UE400 does not adopt the dynamic shared spectrum transmission includes: the UE400 does not receive the second indication information; The second indication information is used to instruct the UE 400 to use dynamic shared spectrum transmission.

Optionally, the foregoing second indication information further includes information used to indicate target resources of symbols occupied by the target reference signal, where the target resources include time domain resources and/or frequency domain resources.

Optionally, the above-mentioned second indication information includes information used to indicate any one of the following: the reference signal rate matching pattern configured by the network device for the serving carrier of the UE400, the reference signal rate matching pattern, and the BWP configured by the network device for the UE400. There is overlap with the frequency domain position indicated by the reference signal rate matching pattern; wherein, the above-mentioned reference signal rate matching pattern is used to indicate the target resource of the symbol occupied by the target reference signal, and the target resource includes time domain resources and/or frequency domain resources; the above-mentioned service The carrier corresponds to the network and the target reference signal corresponds to the network dynamic spectrum sharing.

Optionally, as shown in FIG. 5 , the UE400 further includes: an execution module 403, wherein: the execution module 403 is configured to discard the target DMRS if the target DMRS occupied symbol overlaps with the target resource of the above-mentioned target reference signal occupied symbol, and the target DMRS is discarded. The target DMRS is at least one DMRS of the downlink traffic channel.

Optionally, in the case where the UE400 adopts dynamic shared spectrum transmission and the number of transmission symbols of the downlink traffic channel is 9 or 10, if the DMRS of the above-mentioned downlink traffic channel is 1 symbol, and the downlink traffic channel configured by the network device The number of additional DMRSs is 1, then the first DMRS location set includes: the first transmission symbol and the eighth transmission symbol of the downlink traffic channel; or, if the DMRS of the downlink traffic channel is 1 symbol, and the network equipment configures The number of additional DMRSs of the downlink traffic channel is 2 or 3, and the first DMRS location set includes: the first transmission symbol, the fifth transmission symbol and the eighth transmission symbol of the downlink traffic channel.

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

or,

In the case where the UE 400 does not use dynamic shared spectrum transmission and the number of transmission symbols of the downlink traffic channel is 10, if the number of additional DMRSs of the downlink traffic channel configured by the network device is 1, the second DMRS location set includes: the downlink traffic channel The first transmission symbol and the ninth transmission symbol of the traffic channel; or, if the number of additional DMRSs of the downlink traffic channel configured by the network device is 2, the above-mentioned second DMRS location set includes: the first transmission symbol of the downlink traffic channel, The fifth transmission symbol and the ninth transmission symbol; or, if the number of additional DMRSs of the downlink traffic channel configured by the network device is 3, the second DMRS location set includes: the first transmission symbol, the fifth transmission symbol of the downlink traffic channel The transmission symbol and the ninth transmission symbol, or the first transmission symbol, the fourth transmission symbol, the seventh transmission symbol, and the tenth transmission symbol of the downlink traffic channel.

In the UE provided by the embodiment of the present invention, the UE determines that the occupied position of the downlink traffic channel DMRS using the mapping type B is the first DMRS position set, and in the case where the UE does not use the dynamic shared spectrum transmission, the UE determines to use the downlink mapping type B. The occupied position of the traffic channel DMRS is the second DMRS position set, and the first DMRS position set is different from the second DMRS position set. In this way, the UE can accurately determine the location of the downlink traffic channel DMRS using the mapping type B when switching between the DSS scenario and the non-DSS scenario, which improves communication efficiency and effectiveness.

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

It should be noted that, as shown in FIG. 5 , the modules that must be included in the UE 400 are indicated by solid line boxes, such as the determination module 401 ; the modules that may or may not be included in the UE 400 are indicated by dashed boxes, such as the execution module 403 .

FIG. 6 is a schematic diagram of a possible structure for implementing a network device provided by an embodiment of the present invention. As shown in FIG. 6 , the network device 500 includes: a sending module 501, where the sending module 501 is configured to send a first indication to the UE information or second indication information, where the first indication information is used to indicate whether the UE adopts dynamic shared spectrum transmission, and the second indication information is used to indicate that the UE adopts dynamic shared spectrum transmission.

Optionally, in the case where the above-mentioned first indication information is specifically used to instruct the UE 400 to adopt dynamic shared spectrum transmission, the above-mentioned first indication information is also used to indicate the target resource of the symbol occupied by the target reference signal, and the target resource includes time domain resources and /or frequency domain resources.

Optionally, in the case where the above-mentioned first indication information is used to indicate that the UE adopts dynamic shared spectrum transmission, the above-mentioned first indication information further includes information used to indicate any one of the following: the network device is a reference for the UE's serving carrier configuration. The signal rate matching pattern, the reference signal rate matching pattern, and the BWP configured by the network device for the UE overlap with the frequency domain position indicated by the reference signal rate matching pattern; wherein, the above-mentioned reference signal rate matching pattern is used to indicate the target reference signal occupied symbol. Target resources, the target resources include time domain resources and/or frequency domain resources; the serving carrier corresponds to the network and the target reference signal corresponds to the network dynamic spectrum sharing.

Optionally, the foregoing second indication information is further used to indicate target resources of symbols occupied by the target reference signal, where the target resources include time domain resources and/or frequency domain resources.

Optionally, the above-mentioned second indication information includes information used to indicate any one of the following: a reference signal rate matching pattern configured by the network device for the serving carrier of the UE, a reference signal rate matching pattern, and a BWP configured by the network device for the UE. There is overlap with the frequency domain position indicated by the reference signal rate matching pattern; wherein, the above-mentioned reference signal rate matching pattern is used to indicate the target resource of the symbol occupied by the target reference signal, and the target resource includes time domain resources and/or frequency domain resources; the above-mentioned service The carrier corresponds to the network and the target reference signal corresponds to the network dynamic spectrum sharing.

In the network device provided by the embodiment of the present invention, the network device sends the UE first indication information for indicating whether the UE adopts the dynamic shared spectrum transmission or second indication information for instructing the UE to use the dynamic shared spectrum transmission, Therefore, after receiving the indication information, the UE can accurately determine the location of the downlink traffic channel DMRS using the mapping type B based on the above indication information, thereby improving communication efficiency and effectiveness.

The network device provided by the embodiments of the present invention can implement the processes shown in the foregoing method embodiments, and to avoid repetition, details are not described herein again.

Taking the UE as a terminal device as an example, FIG. 7 is a schematic diagram of the hardware structure of a terminal device implementing various embodiments of the present invention. The terminal device 100 includes but is not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input Unit 104 , sensor 105 , display unit 106 , user input unit 107 , interface unit 108 , memory 109 , processor 110 , and power supply 111 and other components. Those skilled in the art can understand that the structure of the terminal device 100 shown in FIG. 7 does not constitute a limitation on the terminal device, and the terminal device 100 may include more or less components than those shown in the figure, or combine some components, or Different component arrangements. In this 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 handheld computer, a vehicle-mounted terminal device, a wearable device, a pedometer, and the like.

The processor 110 is configured to determine the downlink traffic channel DMRS occupied position as the first DMRS position set when the terminal device 100 adopts the dynamic shared spectrum transmission; or, when the terminal device 100 does not use the dynamic shared spectrum transmission , determine that the downlink traffic channel DMRS occupied position is the second DMRS position set; wherein, the downlink traffic channel DMRS adopts the mapping type B, and the first DMRS position set is different from the second DMRS position set.

In the terminal device provided by the embodiment of the present invention, the terminal device determines that the occupied position of the downlink traffic channel DMRS using the mapping type B is the first DMRS position set, and in the case where the terminal device does not use the dynamic shared spectrum transmission, the terminal device determines to use the mapping The downlink traffic channel DMRS occupation position of type B is the second DMRS position set, and the first DMRS position set is different from the second DMRS position set. In this way, the terminal device can accurately determine the location of the downlink traffic channel DMRS using the mapping type B when switching between the DSS scenario and the non-DSS scenario, which improves communication efficiency and effectiveness.

It should be understood that, in this embodiment of the present invention, the radio frequency unit 101 may be used for receiving and sending signals in the process of sending and receiving information or during a call. Specifically, after receiving the downlink data from the base station, it is processed by the processor 110; The uplink data is sent to the base station. Generally, 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 can also communicate with the network and other devices through a wireless communication system.

The terminal device 100 provides the user with wireless broadband Internet access through the network module 102, such as helping the user to send and receive emails, browse web pages, access streaming media, and the like.

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 audio signals and output as sound. Also, the audio output unit 103 may also provide audio output related to a specific function performed by the terminal device 100 (eg, call signal reception sound, message reception sound, etc.). The audio output unit 103 includes a speaker, a buzzer, a receiver, and the like.

The input unit 104 is used to receive audio or video signals. The input unit 104 may include a graphics processor (Graphics Processing Unit, GPU) 1041 and a microphone 1042. The graphics processor 1041 captures images of still pictures or videos obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode data is processed. 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 . The microphone 1042 can receive sound and can process such sound into audio data. The processed audio data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 for output in the case of a telephone call mode.

The terminal device 100 also includes 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 the ambient light, and the proximity sensor can turn off the display panel 1061 and the display panel 1061 when the terminal device 100 moves to the ear. / or backlight. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary, and can be used to identify the posture of the terminal device (such as horizontal and vertical screen switching, related games , magnetometer attitude calibration), vibration recognition related functions (such as pedometer, tapping), etc.; the sensor 105 may also include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, Infrared sensors, etc., are not repeated here.

The display unit 106 is used to display information input by the 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 (LCD), an organic light-emitting diode (OLED), or the like.

The user input unit 107 may be used to receive input numerical or character information, and generate key signal input 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, can collect the user's touch operations on or near it (such as the user's finger, stylus, etc., any suitable object or attachment on or near the touch panel 1071). operate). The touch panel 1071 may include two parts, a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it to the touch controller. To the processor 110, the command sent by the processor 110 is received and executed. In addition, the touch panel 1071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch panel 1071 , the user input unit 107 may also include other input devices 1072 . Specifically, other input devices 1072 may include, but are not limited to, physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described herein again.

Further, the touch panel 1071 can be covered on the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits it to the processor 110 to determine the type of the touch event, and then the processor 110 determines the type of the touch event according to the touch The type of event provides corresponding visual output on display panel 1061 . Although in FIG. 7, the touch panel 1071 and the display panel 1061 are used as two independent components to realize the input and output functions of the terminal device 100, in some embodiments, the touch panel 1071 and the display panel 1061 may be The input and output functions of the terminal device 100 are implemented through integration, which is not specifically limited here.

The interface unit 108 is an interface for connecting an external device to the terminal device 100 . For example, external devices may include wired or wireless headset ports, external power (or battery charger) ports, wired or wireless data ports, memory card ports, ports for connecting devices with identification modules, audio input/output (I/O) ports, video I/O ports, headphone ports, and more. The interface unit 108 may be used to receive input from external devices (eg, data information, power, etc.) and transmit the received input to one or more elements within the terminal device 100 or may be used between the terminal device 100 and external Transfer data between devices.

The memory 109 may be used to store software programs as well as various data. The memory 109 may mainly include a stored program area and a stored data area, wherein the stored program area may store an operating system, an application program (such as a sound playback function, an image playback function, etc.) required for at least one function, and the like; Data created by the use of the mobile phone (such as audio data, phone book, etc.), etc. Additionally, 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 the control center of the terminal device 100, uses various interfaces and lines to connect various parts of the entire terminal device 100, runs or executes the software programs and/or modules stored in the memory 109, and calls the software programs and/or modules stored in the memory 109. data, perform various functions of the terminal device 100 and process data, so as to monitor the terminal device 100 as a whole. The processor 110 may include one or more processing units; optionally, the processor 110 may integrate an application processor and a modem processor, wherein the application processor mainly processes the operating system, user interface, and application programs, etc., and the modem The modulation processor mainly handles wireless communication. It can be understood that, the above-mentioned modulation and demodulation processor may not be integrated into the processor 110 .

The terminal device 100 may further include a power supply 111 (such as a battery) for supplying power to various components. Optionally, the power supply 111 may be logically connected to the processor 110 through a power management system, so as to manage charging, discharging, and power consumption through the power management system management and other functions.

In addition, the terminal device 100 includes some unshown functional modules, which will not be repeated here.

8 is a schematic diagram of a hardware structure of a network device implementing an embodiment of the present invention. 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 used to send first indication information or second indication information to the UE, where the first indication information is used to indicate whether the UE adopts dynamic shared spectrum transmission, and the second indication information is used to instruct the UE to adopt dynamic shared spectrum transmission .

In the network device provided by the embodiment of the present invention, the network device sends the UE first indication information for indicating whether the UE adopts the dynamic shared spectrum transmission or second indication information for instructing the UE to use the dynamic shared spectrum transmission, Therefore, after receiving the indication information, the UE can accurately determine the location of the downlink traffic channel DMRS using the mapping type B based on the above indication information, thereby improving communication efficiency and effectiveness.

In this embodiment of the present invention, in FIG. 8 , the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 801 and various circuits of the memory represented by the memory 803 are linked together. . The bus architecture may also link together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be described further herein. The bus interface provides the interface. Transceiver 802 may be a number of elements, including a transmitter and a receiver, that provide a means for communicating with various other devices over a transmission medium. For different user equipments, the user interface 804 may also be an interface capable of externally connecting the required equipment, and the connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like. 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 also includes some function modules not shown, which will not be repeated here.

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 running on the processor, the computer program being executed by the processor to implement the first embodiment above. The process of the method for determining the location of the DMRS can achieve the same technical effect. To avoid repetition, it will not be repeated 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 running on the processor, the computer program being executed by the processor to implement the first embodiment above. The process of the method for determining the location of the DMRS can achieve the same technical effect. To avoid repetition, it will not be repeated here.

Embodiments of the present invention further provide a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, implements multiple processes of the method for determining the location of the DMRS in the foregoing embodiment, and The same technical effect can be achieved, and in order to avoid repetition, details are not repeated here. The above-mentioned computer-readable storage medium includes a read-only memory (Read-Only Memory, ROM for short), a random access memory (Random Access Memory, RAM for short), a magnetic disk or an optical disk, and the like.

It should be noted that, herein, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, It also includes other elements not expressly listed or inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

From the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course hardware can also be used, but in many cases the former is better implementation. Based on this understanding, the technical solutions of the present invention can be embodied in the form of software products in essence or the parts that make contributions to the prior art, and the computer software products are stored in a storage medium (such as ROM/RAM, magnetic disk, CD), including several instructions to make a terminal device (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in the various embodiments of the present invention.

The embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific embodiments, which are only illustrative rather than restrictive. Under the inspiration of the present invention, without departing from the scope of protection of the purpose and claims of the present application, many forms can be made, which all fall within the protection of the present application.

Claims (20)

1. A method for determining the position of a demodulation reference signal (DMRS) is applied to User Equipment (UE), and is characterized in that the method comprises the following steps:

under the condition that the UE adopts dynamic shared spectrum transmission, determining DMRS (demodulation reference signals) occupied positions of a downlink traffic channel as a first DMRS position set;

or,

determining the DMRS occupation location to be a second set of DMRS locations under the condition that the UE does not adopt dynamic shared spectrum transmission;

wherein the DMRS employs a mapping type B, and the first set of DMRS locations is different from the second set of DMRS locations.

2. The method of claim 1, further comprising:

receiving first indication information from a network device, wherein the first indication information is used for indicating whether the UE adopts dynamic shared spectrum transmission.

3. The method according to claim 2, wherein in case that the first indication information indicates that the UE employs dynamic shared spectrum transmission, the first indication information further includes information indicating target resources of a target reference signal occupancy symbol, and the target resources include time domain resources and/or frequency domain resources.

4. The method according to claim 2, wherein in case that the first indication information is used to indicate that the UE employs dynamic shared spectrum transmission, the first indication information further includes information indicating any one of:

a reference signal rate matching pattern configured by the network device for a serving carrier of the UE,

the reference signal rate matching pattern and a bandwidth portion BWP configured for the UE by the network device overlap with a frequency domain position indicated by the reference signal rate matching pattern;

the reference signal rate matching pattern is used for indicating target resources of a target reference signal occupation symbol, and the target resources comprise time domain resources and/or frequency domain resources; and the service carrier corresponding network shares the dynamic frequency spectrum with the target reference signal corresponding network.

5. The method of claim 1, wherein the UE employs dynamic shared spectrum transmission, comprising:

the UE receives second indication information sent by the network equipment;

the case that the UE does not employ dynamic shared spectrum transmission includes:

a case where the UE does not receive the second indication information;

wherein the second indication information is used for indicating that the UE adopts dynamic shared spectrum transmission.

6. The method according to claim 5, wherein the second indication information further comprises information indicating target resources of a target reference signal occupancy symbol, the target resources comprising time domain resources and/or frequency domain resources.

7. The method according to claim 5, wherein the second indication information includes information indicating any one of:

a reference signal rate matching pattern configured by the network device for a serving carrier of the UE,

the reference signal rate matching pattern and a bandwidth portion BWP configured for the UE by the network device overlap with a frequency domain position indicated by the reference signal rate matching pattern;

the reference signal rate matching pattern is used for indicating target resources of a target reference signal occupation symbol, and the target resources comprise time domain resources and/or frequency domain resources; and the service carrier corresponding network shares the dynamic frequency spectrum with the target reference signal corresponding network.

8. The method of claim 3 or 6, further comprising:

and if the target resource of the target DMRS occupation symbol is overlapped 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 service channel.

9. The method according to any of claims 1 to 7, wherein in case that the UE employs dynamic shared spectrum transmission and the number of transmission symbols of the downlink traffic channel is 9 or 10,

if the DMRS is 1 symbol and the number of additional DMRS of the downlink traffic channel configured by the network device is 1, the first set of DMRS positions includes: a1 st transmission symbol and an 8 th transmission symbol of the downlink traffic channel;

or,

if the DMRS is 1 symbol and the number of the additional DMRS configured by the network device is 2 or 3, the first set of DMRS locations includes: a1 st transmission symbol, a 5th transmission symbol and an 8 th transmission symbol of the downlink traffic channel.

10. The method according to any one of claims 1 to 7,

in the case that the UE does not use dynamic shared spectrum transmission and the number of transmission symbols of the downlink traffic channel is 9,

if the number of the additional DMRS of the downlink traffic channel configured by the network device is 1, the second DMRS position set includes: a1 st transmission symbol and a 7 th transmission symbol of the downlink traffic channel; or, if the number of the additional DMRS configured by the network device is 2 or 3, the second set of DMRS positions includes: a1 st transmission symbol, a 4 th transmission symbol and a 7 th transmission symbol of the downlink traffic channel;

or,

in the case where the UE does not employ dynamic shared spectrum transmission and the number of transmission symbols of the downlink traffic channel is 10,

if the number of the additional DMRS configured by the network device is 1, the second set of DMRS locations includes: a1 st transmission symbol and a 9 th transmission symbol of the downlink traffic channel; or, if the number of the additional DMRS configured by the network device is 2, the second DMRS position set includes: a1 st transmission symbol, a 5th transmission symbol and a 9 th transmission symbol of the downlink traffic channel; or, if the number of the additional DMRS configured by the network device is 3, the second set of DMRS positions includes: the first transmission symbol, the 5th 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.

11. A method for determining the position of a demodulation reference signal (DMRS) is applied to network equipment and is characterized by comprising the following steps:

sending first indication information or second indication information to User Equipment (UE), wherein the first indication information is used for indicating whether the UE adopts dynamic shared spectrum transmission, and the second indication information is used for indicating that the UE adopts dynamic shared spectrum transmission.

12. The method according to claim 11, wherein in case that the first indication information indicates that the UE employs dynamic shared spectrum transmission, the first indication information further includes information indicating target resources of a target reference signal occupancy symbol, and the target resources include time domain resources and/or frequency domain resources.

13. The method according to claim 11 or 12, wherein in case that the first indication information indicates that the UE employs dynamic shared spectrum transmission, the first indication information further includes information indicating any one of:

a reference signal rate matching pattern configured by the network device for a serving carrier of the UE,

the reference signal rate matching pattern and a bandwidth portion BWP configured for the UE by the network device overlap with a frequency domain position indicated by the reference signal rate matching pattern;

the reference signal rate matching pattern is used for indicating target resources of a target reference signal occupation symbol, and the target resources comprise time domain resources and/or frequency domain resources; and the service carrier corresponding network shares the dynamic frequency spectrum with the target reference signal corresponding network.

14. The method according to claim 11, wherein the second indication information further comprises information indicating target resources of a target reference signal occupancy symbol, the target resources comprising time domain resources and/or frequency domain resources.

15. The method according to claim 11 or 14, wherein the second indication information includes information indicating any one of:

a reference signal rate matching pattern configured by the network device for a serving carrier of the UE,

the reference signal rate matching pattern and a bandwidth portion BWP configured for the UE by the network device overlap with a frequency domain position indicated by the reference signal rate matching pattern;

the reference signal rate matching pattern is used for indicating target resources of a target reference signal occupation symbol, and the target resources comprise time domain resources and/or frequency domain resources; and the service carrier corresponding network shares the dynamic frequency spectrum with the target reference signal corresponding network.

16. A User Equipment (UE), the UE comprising:

the determining module is used for determining that DMRS (demodulation reference signal) occupied positions of a downlink traffic channel are a first DMRS position set under the condition that the UE adopts dynamic shared spectrum transmission; or, determining the DMRS occupation position as a second DMRS position set under the condition that the UE does not adopt dynamic shared spectrum transmission;

wherein the DMRS employs a mapping type B, and the first set of DMRS locations is different from the second set of DMRS locations.

17. A network device, characterized in that the network device comprises:

a sending module, configured to send first indication information or second indication information to a user equipment UE, where the first indication information is used to indicate whether the UE employs dynamic shared spectrum transmission, and the second indication information is used to indicate that the UE employs dynamic shared spectrum transmission.

18. A user equipment, UE, comprising a processor, a memory and a computer program stored on the memory and operable on the processor, the computer program, when executed by the processor, implementing the steps of the method of determining DMRS positions as defined in any one of claims 1 to 10.

19. A network device comprising a processor, a memory and a computer program stored on the memory and operable on the processor, the computer program, when executed by the processor, implementing the steps of the method of determining a DMRS location of any one of claims 11 to 15.

20. A computer-readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the steps of the method for determining a DMRS location as defined in any one of claims 1 to 10 or in any one of claims 11 to 15.

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