Demodulation reference signal configuration method, electronic device and storage medium

Abstract

Provided in the embodiments of the present application is a demodulation reference signal configuration method. The method comprises: receiving demodulation reference signal configuration signaling (110); and transmitting a demodulation reference signal on the basis of a demodulation reference signal pattern indicated by the demodulation reference signal configuration signaling (120).

Description

Demodulation reference signal configuration method, electronic equipment and storage medium Technical Field

[0001] This application relates to the field of wireless communication technology, and more particularly to a demodulation reference signal configuration method, electronic device, and storage medium. Background Technology

[0002] With the development of wireless communication technology, the demand for multi-user capacity is increasing due to the growing number of device connections and diverse application requirements in future communication scenarios. Higher capacity is needed to meet the requirements of large-scale data transmission and multi-user communication. Currently, capacity improvements are achieved through hardware implementation and protocol layer, such as expanding the array antenna size to realize higher multi-user capacity. Array antennas can improve signal reception and transmission capabilities by increasing the number of antennas and optimizing antenna layout, thereby supporting more data stream transmissions. In communication protocols, system capacity can be increased by increasing the number of data streams transmitted simultaneously. This requires optimization and improvement of the communication protocol to support more multiplexed streams. Furthermore, as the frequency bands used for communication gradually increase and the supported bandwidth gradually expands, the frequency domain characteristics of the channel in the scheduling frequency band gradually differ. This means that the demodulation reference signal (DMRS) transmission method in related technologies is no longer suitable for scenarios with large differences in frequency domain characteristics. Therefore, there is an urgent need for a demodulation reference signal configuration method to realize multi-user communication transmission and improve the user capacity of the channel. Summary of the Invention

[0003] This application provides a demodulation reference signal configuration method, an electronic device, and a storage medium, which aim to improve the user capacity of the channel. The demodulation reference signal pattern indicated by signaling can adapt to various scenarios and has good flexibility.

[0004] This application provides a demodulation reference signal configuration method, wherein the method includes:

[0005] Receive demodulation reference signal configuration signaling;

[0006] The demodulation reference signal is transmitted according to the demodulation reference signal pattern indicated by the configuration signaling of the demodulation reference signal.

[0007] This application also provides a demodulation reference signal configuration method, wherein the method includes:

[0008] Determine the demodulation reference signal configuration signaling;

[0009] Transmit the demodulation reference signal configuration signaling.

[0010] This application also provides an electronic device, wherein the electronic device includes:

[0011] One or more processors;

[0012] Memory, used to store one or more programs;

[0013] When the one or more programs are executed by the one or more processors, the one or more processors implement the method as described in any of the embodiments of this application.

[0014] This application also provides a computer-readable storage medium storing one or more programs that are executed by one or more processors to implement any of the methods described in this application. Attached Figure Description

[0015] Figure 1 is a flowchart of a demodulation reference signal configuration method provided in an embodiment of this application;

[0016] Figure 2 is a flowchart of another demodulation reference signal configuration method provided in an embodiment of this application;

[0017] Figure 3 is an example diagram of a demodulation reference signal pattern provided in an embodiment of this application;

[0018] Figure 4 is an example diagram of a demodulation reference signal pattern provided in an embodiment of this application;

[0019] Figure 5 is an example diagram of a demodulation reference signal pattern provided in an embodiment of this application;

[0020] Figure 6 is an example diagram of a demodulation reference signal pattern provided in an embodiment of this application;

[0021] Figure 7 is an example diagram of a demodulation reference signal pattern provided in an embodiment of this application;

[0022] Figure 8 is an example diagram of a demodulation reference signal pattern provided in an embodiment of this application;

[0023] Figure 9 is an example diagram of a demodulation reference signal pattern provided in an embodiment of this application;

[0024] Figure 10 is an example diagram of a demodulation reference signal pattern provided in an embodiment of this application;

[0025] Figure 11 is an example diagram of a demodulation reference signal pattern provided in an embodiment of this application;

[0026] Figure 12 is an example diagram of a demodulation reference signal pattern provided in an embodiment of this application;

[0027] Figure 13 is an example diagram of a demodulation reference signal pattern provided in an embodiment of this application;

[0028] Figure 14 is an example diagram of a demodulation reference signal pattern provided in an embodiment of this application;

[0029] Figure 15 is an example diagram of a demodulation reference signal pattern provided in an embodiment of this application;

[0030] Figure 16 is a flowchart of another demodulation reference signal configuration method provided in an embodiment of this application;

[0031] Figure 17 is an example diagram of demodulation reference signal pattern switching provided in an embodiment of this application;

[0032] Figure 18 is an example diagram of another demodulation reference signal pattern switching provided in an embodiment of this application;

[0033] Figure 19 is a flowchart of another demodulation reference signal configuration method provided in an embodiment of this application;

[0034] Figure 20 is a schematic diagram of a demodulation reference signal configuration device provided in an embodiment of this application;

[0035] Figure 21 is a schematic diagram of another demodulation reference signal configuration device provided in an embodiment of this application;

[0036] Figure 22 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Detailed Implementation

[0037] It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application.

[0038] In the following description, the use of suffixes such as “module,” “part,” or “unit” to denote elements is solely for the purpose of illustration in this application and has no particular meaning in itself. Therefore, “module,” “part,” or “unit” may be used interchangeably.

[0039] Figure 1 is a flowchart of a demodulation reference signal configuration method provided in an embodiment of this application. This embodiment is applicable to the demodulation reference signal transmission configuration. The method can be executed by a demodulation reference signal configuration device, which can be implemented by software and / or hardware methods and is generally integrated into the first node. As shown in Figure 1, the method provided in this embodiment specifically includes the following steps:

[0040] Step 110: Receive demodulation reference signal configuration signaling.

[0041] The demodulation reference signal configuration signaling can be an instruction for configuring the demodulation reference signal transmission pattern. The demodulation reference signal configuration signaling can include information indicating the pattern or information indicating pattern switching. The demodulation reference signal can include one or more of the following: Radio Resource Control (RRC) signaling, Medium Access Control Control Element (MAC CE) signaling, or Downlink Control Information (DCI).

[0042] Specifically, it can receive demodulation reference signal configuration signaling.

[0043] Step 120: Transmit the demodulation reference signal according to the demodulation reference signal pattern indicated by the configuration signaling.

[0044] The demodulation reference signal pattern can be information that assists in channel estimation, which can help the first node determine the resources occupied by the user. The demodulation reference signal pattern can be pre-configured in the first node. The demodulation reference signal pattern can support single symbol or double symbol. The demodulation reference signal pattern can be a uniform demodulation reference signal pattern or a non-uniform demodulation reference signal pattern. The uniform demodulation reference signal pattern can include the uniform distribution of resource units in the Physical Resource Group (PRG).

[0045] In the embodiments of this application, the indicated demodulation reference signal pattern can be determined by the demodulation reference signal configuration information, and the demodulation reference signal can be transmitted according to the demodulation reference signal pattern.

[0046] In this embodiment of the application, a demodulation reference signal pattern is indicated by demodulation reference signal configuration signaling, and the demodulation reference signal is transmitted based on the indicated demodulation reference signal pattern. The indicated demodulation reference signal pattern can increase the maximum number of supported data streams, increase the user capacity of the communication channel, and realize multi-user communication transmission.

[0047] Figure 2 is a flowchart of another demodulation reference signal configuration method provided in an embodiment of this application. Based on the above embodiments, this application describes the indication method of the demodulation reference signal pattern. Referring to Figure 2, the method provided in this application specifically includes the following steps:

[0048] Step 210: Receive demodulation reference signal configuration signaling.

[0049] Step 220: Determine the demodulation reference signal pattern information indicated by the demodulation reference signal configuration signaling.

[0050] The demodulation reference signal pattern information can be the information used by the first node to select the demodulation reference signal. The demodulation reference signal pattern information can be indicated by the demodulation reference signal configuration signaling. The demodulation reference signal pattern information can include at least the number of code division multiplexing groups included in the demodulation reference signal pattern and the maximum number of ports supported in each code division multiplexing group. The product of the number of code division multiplexing groups and the maximum number of ports supported in each code division multiplexing group is the maximum number of ports supported by the demodulation reference signal pattern.

[0051] In this embodiment of the application, the demodulation reference signal pattern information indicated by the demodulation reference signal configuration signaling can be determined. For example, the demodulation reference signal configuration signaling may include information indicating the number of code division multiplexing groups and the maximum number of ports supported in each code division multiplexing group. The above-mentioned indicated number of code division multiplexing groups and the maximum number of ports supported in each code division multiplexing group can be used as the demodulation reference signal pattern information.

[0052] Step 230: Transmit the demodulation reference signal according to the demodulation reference signal pattern corresponding to the demodulation reference signal pattern information.

[0053] Specifically, the corresponding demodulation reference signal pattern can be found by referring to the demodulation reference signal pattern information. It can be understood that the parameters of the demodulation reference signal pattern can correspond to the demodulation reference signal pattern information. For example, the demodulation reference signal pattern information includes the number of code division multiplexing groups, and the corresponding demodulation reference signal pattern supports the same number of code division multiplexing groups.

[0054] In this embodiment of the application, by receiving demodulation reference signal configuration signaling, the demodulation reference signal pattern information corresponding to the demodulation reference signal configuration signaling is determined, and the demodulation reference signal pattern corresponding to the demodulation reference signal pattern information is obtained. The demodulation reference signal pattern indicated by the signaling can adapt to various scenarios, can enhance the maximum number of data streams supported by the demodulation reference signal pattern, can improve the user capacity of the communication channel, and realize multi-user communication transmission.

[0055] Based on the above-described embodiments, the demodulation reference signal configuration signaling includes at least one of radio resource control signaling, media access control layer control unit signaling, or downlink control information.

[0056] Based on the above-described embodiments, the demodulation reference signal configuration signaling includes at least one of a first signaling or a second signaling, wherein the first signaling is used to indicate demodulation reference signal pattern information; and the second signaling is used to indicate switching from the first demodulation reference signal pattern to the second demodulation reference signal pattern.

[0057] In this embodiment, the demodulation reference signal configuration signaling may include a first signaling or a second signaling. The first signaling may indicate demodulation reference signal pattern information, for example, the first signaling may indicate the number of supported users or the number of code division multiplexing groups as demodulation reference signal pattern information. The second signaling may indicate a switch from the first demodulation reference signal pattern to the second demodulation reference signal pattern. For example, the second signaling may indicate the identifier of the switched second demodulation reference signal pattern, or the second signaling may indicate the demodulation reference signal pattern information of the second demodulation reference signal pattern.

[0058] Based on the above-described embodiments, the demodulation reference signal pattern information includes uniform pattern information or non-uniform pattern information.

[0059] In this embodiment of the application, the demodulation reference signal pattern information may include uniform pattern information or non-uniform pattern information. The uniform pattern information may be information indicating that the demodulation reference signal pattern is uniform, and the non-uniform pattern information may be information indicating that the demodulation reference signal pattern is non-uniform. The non-uniform pattern information may be composed of at least two uniform pattern information.

[0060] Based on the above application embodiments, the uniform type pattern information of the demodulation reference signal pattern information includes at least one of the following: the number of code division multiplexing groups, the scheduling bandwidth ratio corresponding to each code division multiplexing group, the location or number of resource units mapped and occupied by each code division multiplexing group, and the maximum number of demodulation reference signal ports supported by each code division multiplexing group.

[0061] In this embodiment, the uniform pattern information can be composed of one or more of the following: the number of code division multiplexing groups (CDMs), the scheduling bandwidth ratio corresponding to each CDM, the location or number of resource units mapped to each CDM, and the maximum number of demodulation reference signal ports supported by each CDM. The number of CDMs can represent the number of services supported; the more CDMs there are, the more independent communication channels can be accommodated. The scheduling bandwidth ratio corresponding to each CDM can be used to determine the allocation ratio of each CDM in the total bandwidth, directly affecting the communication speed and quality of the users in that group. The location or number of resource units mapped to each CDM can be used to clarify the specific location of each CDM in the resource space and the amount of resources it occupies. The maximum number of demodulation reference signal ports supported by each CDM can determine the number of user devices and communication quality that each CDM can support simultaneously.

[0062] Based on the above application embodiments, the number of code division multiplexing groups of uniform type patterns includes at least one of the following: 2, 3, 4, 6, 8, 12.

[0063] Based on the above application embodiments, the resource units occupied by the same code division multiplexing group are spaced at equal intervals, and the number of resource units occupied by a code division multiplexing group in one physical resource block is at least one of the following: 12, 6, 4, 3, 2, 1.

[0064] In the embodiments of this application, the positional intervals between resource units belonging to the same code division multiplexing group in the uniform type pattern are equal, and the number of resource units occupied by a code division multiplexing group in one physical resource block is at least one of the following: 12, 6, 4, 3, 2, 1.

[0065] In one exemplary implementation, the parameter ρ represents the proportion of the single-user demodulation reference signal to the scheduling bandwidth, ρ = 1 / N, where N is the number of Code Division Multiplexing (CDM) groups. The following are some typical DMRS patterns, each of which can be divided into single-symbol and double-symbol types.

[0066] Taking ρ=1 as an example, as shown in Figure 3, this demodulation reference signal pattern includes only one CDM group, mainly suitable for strong frequency selection scenarios. One time-domain symbol supports a maximum of one port. Port 0 occupies all REs mapped to the subcarrier positions. The starting position of the time-domain symbol can be in symbol 2 or other positions; Figure 3 only uses time-domain symbol 2 as an example. Referring to Figure 4, two time-domain symbols support a maximum of two orthogonal ports. Port 0 occupies all REs mapped to the subcarrier positions, that is, it occupies 12 REs consecutively within one RB. The starting position of the time-domain symbol can be in symbol 2 or other positions; Figure 4 only uses time-domain symbol 2 as an example.

[0067] Taking ρ = 1 / 2 as an example, as shown in Figure 5, the demodulation reference signal pattern includes two CDM groups. CDM group 0 is the resource element (RE) mapped by the even-numbered subcarriers, and CDM group 1 is the RE mapped by the odd-numbered subcarriers. The CDM group occupies one time domain symbol in the demodulation reference signal pattern, while Figure 6 shows the demodulation reference signal pattern with two time domain symbols.

[0068] Taking ρ = 1 / 3 as an example, the demodulation reference signal pattern contains three CDM groups. CDM group 0 is the RE mapped by the subcarrier with a modulo 3 remainder of 0, CDM group 1 is the RE mapped by the subcarrier with a modulo 3 remainder of 1, and CDM group 2 is the RE mapped by the subcarrier with a modulo 3 remainder of 2. Schematic diagrams of one time-domain symbol and two time-domain symbols are shown in Figures 7 and 8. The starting position of the time-domain symbol can be located at symbol 2 or other positions; here, we only take time-domain symbol 2 as an example.

[0069] Taking ρ = 1 / 4 as an example, the demodulation reference signal pattern includes four CDM groups. CDM group i is the RE mapped by subcarriers modulo 4 and cofactor i. Specifically, CDM group 0 is the RE mapped by subcarriers modulo 4 and cofactor 0, CDM group 1 is the RE mapped by subcarriers modulo 4 and cofactor 1, CDM group 2 is the RE mapped by subcarriers modulo 4 and cofactor 2, and CDM group 3 is the RE mapped by subcarriers modulo 4 and cofactor 3. Schematic diagrams of one time-domain symbol and two time-domain symbols are shown in Figures 9 and 10. The starting position of the time-domain symbol can be located at symbol 2 or other positions; here, we only take time-domain symbol 2 as an example.

[0070] Taking ρ = 1 / 6 as an example, the demodulation reference signal pattern contains 6 CDM groups. CDM group i is the RE mapped by subcarriers modulo 6 and remainder i. Specifically, CDM group 0 is the RE mapped by subcarriers modulo 6 and remainder 0, CDM group 1 is the RE mapped by subcarriers modulo 6 and remainder 1, CDM group 2 is the RE mapped by subcarriers modulo 6 and remainder 2, CDM group 3 is the RE mapped by subcarriers modulo 6 and remainder 3, CDM group 4 is the RE mapped by subcarriers modulo 6 and remainder 4, and CDM group 5 is the RE mapped by subcarriers modulo 6 and remainder 5. Schematic diagrams of one time-domain symbol and two time-domain symbols are shown in Figures 11 and 12. The starting position of the time-domain symbol can be located at symbol 2 or other positions; here, we only take time-domain symbol 2 as an example.

[0071] Taking ρ = 1 / 12 as an example, this demodulation reference signal pattern contains 12 CDM groups. CDM group i is the RE mapped by subcarriers modulo 12 and remainder i. Specifically, CDM group 0 is the RE mapped by subcarriers modulo 12 and remainder 0, CDM group 1 is the RE mapped by subcarriers modulo 12 and remainder 1, CDM group 2 is the RE mapped by subcarriers modulo 12 and remainder 2, CDM group 3 is the RE mapped by subcarriers modulo 12 and remainder 3, and CDM group 4 is the RE mapped by subcarriers modulo 12 and remainder 4. The REs in CDM group 5 are REs mapped to subcarriers with a modulo-12 remainder of 5, CDM group 6 are REs mapped to subcarriers with a modulo-12 remainder of 6, CDM group 7 are REs mapped to subcarriers with a modulo-12 remainder of 7, CDM group 8 are REs mapped to subcarriers with a modulo-12 remainder of 8, CDM group 9 are REs mapped to subcarriers with a modulo-12 remainder of 9, CDM group 10 are REs mapped to subcarriers with a modulo-12 remainder of 10, and CDM group 11 are REs mapped to subcarriers with a modulo-12 remainder of 11. Schematic diagrams of one time-domain symbol and two time-domain symbols are shown in Figures 13 and 14. The starting position of the time-domain symbol can be located at symbol 2 or other positions; here, only time-domain symbol 2 is used as an example.

[0072] Based on the above application embodiments, the non-uniform type pattern information of the demodulation reference signal pattern information is composed of at least two uniform type pattern information. The non-uniform type pattern information includes at least one of the following: the number of uniform type pattern information, multiple uniform type pattern information, and the scheduling resource unit location information corresponding to each uniform type pattern information.

[0073] In this embodiment, the non-uniform pattern information can be composed of at least two uniform pattern information. The non-uniform pattern information can include parameters such as the number of uniform pattern information, multiple uniform pattern information, and scheduling resource unit location information corresponding to each uniform pattern information. The number of uniform pattern information can be the number of uniform pattern information that the non-uniform pattern information is composed of. Each uniform pattern information can be composed of at least one of the following parameters: the number of code division multiplexing groups, the scheduling bandwidth ratio corresponding to each code division multiplexing group, the resource unit location or number mapped and occupied by each code division multiplexing group, and the maximum number of demodulation reference signal ports supported by each code division multiplexing group. The scheduling resource unit location information corresponding to each uniform pattern information can be the information of the scheduling resource unit location where each uniform pattern information is active.

[0074] Based on the above-described embodiments, the location information of the scheduling resource unit corresponding to the uniform type pattern information is one of the following:

[0075] The location of scheduling resource units is stored based on a bitmap. The smallest scheduling unit in the bitmap is a Resource Block Group (RBG) or a Physical Resource Group (PRG).

[0076] The location of the scheduling resource unit is saved by the starting position and the length.

[0077] In this embodiment, the location information of the scheduling resource unit corresponding to the uniform type pattern information can be represented in the form of a bitmap, where the smallest scheduling unit is a resource block group (RBG) or a physical resource group (PRG). Alternatively, the location information of the scheduling resource unit corresponding to the uniform type pattern information can be represented by the start position and length of the resource unit. It is understood that the location information of the scheduling resource unit corresponding to the uniform type pattern information can also be represented by the start and end positions of the resource unit.

[0078] In some exemplary embodiments, non-uniform patterns can be generated from uniform patterns. Non-uniform pattern information can consist of uniform pattern information from several uniform patterns and scheduling resource unit (RB) location information corresponding to each uniform pattern. The uniform pattern information can be indicated by a parameter ρ, where ρ = 1 / N, and N is the number of CDM groups. The scheduling resource unit location information corresponding to each uniform pattern can include the start and end RB numbers of the uniform pattern. Non-uniform patterns can be formed by combining different uniform patterns, requiring that the combined uniform patterns support the same maximum number of ports. The scheduling range of each pattern can be determined based on the start and end RBs of the uniform pattern. The pattern type of the uniform pattern used is determined by combining the value of parameter ρ. Referring to Figure 15, taking a combination of two uniform patterns supporting a maximum of 4 ports as an example, the combination methods of different uniform patterns are illustrated. Assume that the patterns used are ρ = 1 / 2 and ρ = 1 / 4, the total scheduling RB range is RB0 to RB10, the start RBs corresponding to the two patterns are RB0 and RB3, and the corresponding end RBs are RB2 and RB9.

[0079] Based on the above-mentioned application embodiments, it further includes: if the demodulation reference signal configuration signaling is not received, transmitting the demodulation reference signal according to the demodulation reference signal pattern corresponding to the default demodulation reference signal pattern information, wherein the default demodulation reference signal pattern corresponds to a uniform type pattern.

[0080] In this embodiment of the application, when the first node does not receive demodulation reference signal configuration signaling, it can use default demodulation reference signal pattern information to transmit the demodulation reference signal. It can obtain the pre-configured default demodulation reference signal pattern information, find the demodulation reference signal pattern corresponding to the default demodulation reference signal pattern information, and transmit the demodulation reference signal pattern according to the demodulation reference signal pattern. The default demodulation reference signal information can specifically be uniform type pattern information.

[0081] In an exemplary implementation, before obtaining RRC signaling, it is necessary to ensure that the system has a set of default parameters that can be used to send demodulation reference signals to ensure the robustness of the system. For example, the default parameter is ρ = 1 / 2, which indicates that the demodulation reference signal pattern is a uniform type pattern. The demodulation reference signal pattern corresponding to the default parameter uses a single port, DMRS port 0, and a single pre-dated DMRS symbol.

[0082] Figure 16 is a flowchart of another demodulation reference signal configuration method provided in an embodiment of this application. Based on the above embodiments, this application describes the indication method of the demodulation reference signal pattern. Referring to Figure 16, the method provided in this application specifically includes the following steps:

[0083] Step 310: Receive demodulation reference signal configuration signaling.

[0084] Step 320: Determine the demodulation reference signal configuration signaling instruction to switch from the first demodulation reference signal pattern to the second demodulation reference signal pattern.

[0085] The first demodulation reference signal pattern can be a different pattern from the second demodulation reference signal pattern. This difference may include the number of code division multiplexing groups, the number of symbols occupied, the number of time-domain symbols, and the type of demodulation reference signal.

[0086] In this embodiment of the application, the demodulation reference signal configuration signaling can instruct a switch from a first demodulation reference signal pattern to a second demodulation reference signal pattern, wherein the first demodulation reference signal pattern can be the demodulation reference signal pattern currently in use.

[0087] Step 330: Transmit the demodulation reference signal according to the second demodulation reference signal pattern.

[0088] In this embodiment, the first node receives demodulation reference signal configuration signaling and determines that the demodulation reference signal configuration signaling indicates a switch from the first demodulation reference signal pattern to the second demodulation reference signal pattern. The first node then transmits the demodulation reference signal according to the second demodulation reference signal pattern, which can improve the user capacity of the communication channel and realize multi-user communication transmission.

[0089] Based on the above-described embodiments, the first demodulation reference signal pattern is the demodulation reference signal pattern corresponding to the currently transmitted demodulation reference signal; the second demodulation reference signal pattern is the demodulation reference signal pattern corresponding to the demodulation reference signal to be switched.

[0090] In this embodiment of the application, the demodulation reference signal configuration signaling can instruct a switch from a first demodulation reference signal pattern to a second demodulation reference signal pattern. The first demodulation reference signal pattern is the demodulation reference signal pattern corresponding to the currently transmitted demodulation reference signal; the second demodulation reference signal pattern is the demodulation reference signal pattern corresponding to the demodulation reference signal to be switched.

[0091] Based on the above-described embodiments, the demodulation reference signal pattern information corresponding to the first demodulation reference signal pattern is not entirely the same as the demodulation reference signal pattern information corresponding to the second demodulation reference signal pattern.

[0092] Specifically, the differences between the demodulation reference signal pattern information of the first demodulation reference signal pattern and the demodulation reference signal pattern information of the second demodulation reference signal pattern may include different demodulation reference signal types, such as pre-DMRS signals or supplementary DMRS signals; different numbers of symbols occupied by the demodulation reference signal, such as single symbols or double symbols; different demodulation reference signal ports; different locations of demodulation reference signal resource units; different numbers of CDM groups corresponding to the demodulation reference signal; and different pattern types corresponding to the demodulation reference signal.

[0093] Based on the above application embodiments, the demodulation reference signal pattern information corresponding to the first demodulation reference signal pattern is not completely the same as the demodulation reference signal pattern information corresponding to the second demodulation reference signal pattern. The difference includes that the time domain symbols of the demodulation reference signals are different, wherein the time domain symbols include at least one of the following: the number or position of time domain symbols.

[0094] In the embodiments of this application, the difference between the demodulation reference signal pattern information of the first demodulation reference signal pattern and the second demodulation reference signal pattern can be at least that the time domain symbols of the demodulation reference signals are different. The difference in time domain symbols can include at least the difference in the number of time domain symbols or the difference in the position of the time domain symbols.

[0095] In an exemplary implementation, taking the demodulation reference signal pattern identified by parameter ρ as an example, DMRS patterns with a larger ρ can be switched to DMRS patterns with a smaller ρ using RRC, MAC CE, or DCI as demodulation reference signal configuration signaling. A larger ρ can indicate that a single RB in the same DMRS port occupies a larger number of REs, while a smaller ρ can indicate that a single RB in the same DMRS port occupies a smaller number of REs. Alternatively, a DMRS pattern with a smaller ρ can be switched to a DMRS pattern with a larger ρ. Simultaneously with the pattern switching, the CDM group and Orthogonal Cover Code (OCC) are also adjusted accordingly; they can remain unchanged or be modified according to actual needs.

[0096] Referring to Figure 17, taking the switching of the orthogonal port count from ρ=1 / 2 to ρ=1 / 4 as an example, this switching method can reduce pilot overhead and improve the transmission rate when the channel frequency selectivity is not obvious. CDM group 0 contains 2 ports, and at this time, the usage of REs per RB can be reduced from 6 REs to 3 REs per RB.

[0097] Referring to Figure 18, the number of orthogonal ports is 2. Switching from a pattern of ρ=1 / 4 to ρ=1 / 2 increases pilot density to accommodate situations with strong channel frequency selectivity, improves channel estimation accuracy, and thus increases throughput. CDM group 0 contains 2 ports, at which point the usage per RB changes from 3 REs to 6 REs.

[0098] Based on the above-described embodiments, the DMRS pattern can be determined by at least one of the following: RRC, MAC CE, or DCI. RRC signaling enables any of the above DMRS patterns and their associated OCC codes. Typical configuration methods include: setting the DMRS type via RRC signaling, indicating uniform or non-uniform patterns, and further indicating the DMRS pattern via parameter ρ or other similar parameters; or directly indicating the DMRS pattern via RRC signaling, such as indicating the DMRS pattern sequence number. The number of preceding DMRS is indicated by RRC signaling, thereby determining whether it is a 1-symbol or 2-symbol DMRS. If 2 symbols are configured in the RRC, the actual number of transmitted symbols is indicated by the DCI. During multi-user scheduling, multi-user scheduling can only be performed when the DMRS pattern, OCC length, and number of CDM groups are all the same; multi-user scheduling cannot be performed if any of the DMRS pattern, OCC length, or number of CDM groups is different.

[0099] Similarly, the above-mentioned RRC, MAC CE, or DCI signaling can be used to switch patterns with more supplementary DMRS counts to patterns with fewer supplementary DMRS counts, or vice versa.

[0100] Figure 19 is a flowchart of another demodulation reference signal configuration method provided in an embodiment of this application. This embodiment is applicable to the demodulation reference signal transmission configuration. The method can be executed by a demodulation reference signal configuration device, which can be implemented through software and / or hardware methods and is generally integrated into a second node. As shown in Figure 19, the method provided in this embodiment specifically includes the following steps:

[0101] Step 410: Determine the demodulation reference signal configuration signaling.

[0102] In the embodiments of this application, demodulation reference signal configuration signaling can be determined. This demodulation reference signal configuration signaling can be determined based on information such as system requirements, user equipment status, and channel conditions. This demodulation reference signal configuration signaling can configure the demodulation reference signal.

[0103] Step 420: Transmit demodulation reference signal configuration signaling. In this embodiment, the demodulation reference signal configuration signaling can be transmitted so that the first node can receive the demodulation reference signal configuration signaling, thereby enabling the first node to determine the demodulation reference signal pattern for transmitting the demodulation reference signal through the demodulation reference signal configuration information.

[0104] Based on the above-described embodiments, the demodulation reference signal configuration signaling includes at least one of radio resource control signaling, media access control layer control unit signaling, or downlink control information.

[0105] Based on the above-described embodiments, the demodulation reference signal configuration signaling includes at least one of a first signaling or a second signaling, wherein,

[0106] The first signaling is used to indicate the demodulation reference signal pattern information;

[0107] The second signaling is used to indicate a switch from the first demodulation reference signal pattern to the second demodulation reference signal pattern.

[0108] Based on the above-described embodiments, the demodulation reference signal pattern information includes uniform pattern information or non-uniform pattern information.

[0109] Based on the above application embodiments, the uniform type pattern information of the demodulation reference signal pattern information includes at least one of the following: the number of code division multiplexing groups, the scheduling bandwidth ratio corresponding to each code division multiplexing group, the location or number of resource units mapped and occupied by each code division multiplexing group, and the maximum number of demodulation reference signal ports supported by each code division multiplexing group.

[0110] Based on the above application embodiments, the number of code division multiplexing groups of uniform type patterns includes at least one of the following: 2, 3, 4, 6, 8, 12.

[0111] Based on the above application embodiments, the resource units occupied by the same code division multiplexing group are spaced at equal intervals, and the number of resource units occupied by a code division multiplexing group in one physical resource block is at least one of the following: 12, 6, 4, 3, 2, 1.

[0112] Based on the above application embodiments, the non-uniform type pattern information of the demodulation reference signal pattern information is composed of at least two uniform type pattern information. The non-uniform type pattern information includes at least one of the following: the number of uniform type pattern information, multiple uniform type pattern information, and the scheduling resource unit location information corresponding to each uniform type pattern information.

[0113] Based on the above-described embodiments, the location information of the scheduling resource unit corresponding to the uniform type pattern information is one of the following:

[0114] The location of scheduling resource units is stored based on a bitmap. The smallest scheduling unit in the bitmap is a resource block group (RBG) or a physical resource group (PRG).

[0115] The location of the scheduling resource unit is saved by the starting position and the length.

[0116] Based on the above-described embodiments, the first demodulation reference signal pattern is the demodulation reference signal pattern corresponding to the currently transmitted demodulation reference signal; the second demodulation reference signal pattern is the demodulation reference signal pattern corresponding to the demodulation reference signal to be switched.

[0117] Based on the above-described embodiments, the demodulation reference signal pattern information corresponding to the first demodulation reference signal pattern is not entirely the same as the demodulation reference signal pattern information corresponding to the second demodulation reference signal pattern.

[0118] Based on the above application embodiments, the demodulation reference signal pattern information corresponding to the first demodulation reference signal pattern is not completely the same as the demodulation reference signal pattern information corresponding to the second demodulation reference signal pattern. The difference includes that the time domain symbols of the demodulation reference signals are different, wherein the time domain symbols include at least one of the following: the number or position of time domain symbols.

[0119] Figure 20 is a schematic diagram of a demodulation reference signal configuration device provided in an embodiment of this application. This device can execute the methods provided in any embodiment of this application and possesses the corresponding functional modules and beneficial effects for executing the methods. This device can be implemented by software and / or hardware. As shown in Figure 20, the device provided in this embodiment specifically includes:

[0120] The signaling receiving module 510 is used to receive demodulation reference signal configuration signaling.

[0121] The signal transmission module 520 is used to transmit the demodulation reference signal according to the demodulation reference signal pattern indicated by the demodulation reference signal configuration signaling.

[0122] Based on the above-mentioned application embodiments, the signal transmission module 520 is specifically used to: determine the demodulation reference signal pattern information indicated by the demodulation reference signal configuration signaling; and transmit the demodulation reference signal according to the demodulation reference signal pattern corresponding to the demodulation reference signal pattern information.

[0123] Based on other application embodiments, the signal transmission module 520 is further configured to: determine the demodulation reference signal configuration signaling instruction to switch from the first demodulation reference signal pattern to the second demodulation reference signal pattern; and transmit the demodulation reference signal according to the second demodulation reference signal pattern.

[0124] Figure 21 is a schematic diagram of a demodulation reference signal configuration device provided in an embodiment of this application. This device can execute the methods provided in any embodiment of this application and possesses the corresponding functional modules and beneficial effects for executing the methods. This device can be implemented by software and / or hardware. As shown in Figure 21, the device provided in this embodiment specifically includes:

[0125] The signaling determination module 610 is used to determine the demodulation reference signal configuration signaling.

[0126] The signaling transmission module 620 is used to transmit the demodulation reference signal configuration signaling.

[0127] In some embodiments, the demodulation reference signal configuration signaling in the device includes at least one of radio resource control signaling, media access control layer control unit signaling, or downlink control information.

[0128] In some embodiments, the demodulation reference signal configuration signaling in the apparatus includes at least one of a first signaling or a second signaling, wherein,

[0129] The first signaling is used to indicate the demodulation reference signal pattern information;

[0130] The second signaling is used to indicate a switch from the first demodulation reference signal pattern to the second demodulation reference signal pattern.

[0131] In some embodiments, the demodulation reference signal pattern information in the device includes uniform pattern information or non-uniform pattern information.

[0132] In some embodiments, the uniform type pattern information of the demodulation reference signal pattern information in the device includes at least one of the following: the number of code division multiplexing groups, the scheduling bandwidth ratio corresponding to each code division multiplexing group, the location or number of resource units mapped to each code division multiplexing group, and the maximum number of demodulation reference signal ports supported by each code division multiplexing group.

[0133] In some embodiments of the application, the number of code division multiplexing groups of uniform type patterns in the device includes at least one of the following: 2, 3, 4, 6, 8, 12.

[0134] In some embodiments, the resource units occupied by the same code division multiplexing group in the device are spaced at equal intervals, and the number of resource units occupied by a code division multiplexing group in one physical resource block is at least one of the following: 12, 6, 4, 3, 2, 1.

[0135] In some embodiments, the non-uniform type pattern information of the demodulation reference signal pattern information in the device is composed of at least two uniform type pattern information. The non-uniform type pattern information includes at least one of the following: the number of uniform type pattern information, multiple uniform type pattern information, and the scheduling resource unit location information corresponding to each uniform type pattern information.

[0136] In some embodiments, the scheduling resource unit location information corresponding to the uniform type pattern information in the device is one of the following:

[0137] The location of scheduling resource units is stored based on a bitmap. The smallest scheduling unit in the bitmap is a resource block group (RBG) or a physical resource group (PRG).

[0138] The location of the scheduling resource unit is saved by the starting position and the length.

[0139] In some embodiments, the device further includes a default transmission module, configured to transmit a demodulation reference signal according to the demodulation reference signal pattern corresponding to the default demodulation reference signal pattern information if the demodulation reference signal configuration signaling is not received, wherein the default demodulation reference signal pattern information is uniform type pattern information.

[0140] In some embodiments, the first demodulation reference signal pattern in the device is the demodulation reference signal pattern corresponding to the currently transmitted demodulation reference signal; the second demodulation reference signal pattern is the demodulation reference signal pattern corresponding to the demodulation reference signal to be switched.

[0141] In some embodiments, the demodulation reference signal pattern information corresponding to the first demodulation reference signal pattern is not exactly the same as the demodulation reference signal pattern information corresponding to the second demodulation reference signal pattern.

[0142] In some application embodiments, the demodulation reference signal pattern information corresponding to the first demodulation reference signal pattern is not completely the same as the demodulation reference signal pattern information corresponding to the second demodulation reference signal pattern. The difference includes that the time domain symbols of the demodulation reference signals are different, wherein the time domain symbols include at least one of the following: the number or position of time domain symbols.

[0143] Figure 22 is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device includes a processor 10, a memory 11, an input device 12, and an output device 13. The number of processors 10 in the electronic device can be one or more. Figure 22 shows one processor 10 as an example. The processor 10, memory 11, input device 12, and output device 13 in the electronic device can be connected by a bus or other means. Figure 22 shows a connection via a bus as an example.

[0144] The memory 11, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as the modules corresponding to the devices in the embodiments of this application. The processor 10 executes various functional applications and data processing of the electronic device by running the software programs, instructions, and modules stored in the memory 11, that is, it implements the demodulation reference signal configuration method described above.

[0145] The memory 11 may primarily include a program storage area and a data storage area. The program storage area may store the operating system and at least one application program required for a given function; the data storage area may store data created based on the use of the electronic device. Furthermore, the memory 11 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory, or other non-volatile solid-state storage device. In some instances, the memory 11 may further include memory remotely located relative to the processor 10, which can be connected to the electronic device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0146] Input device 12 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the electronic device. Output device 13 may include display devices such as a display screen.

[0147] This application also provides a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform a demodulation reference signal configuration method, the method comprising:

[0148] Receive demodulation reference signal configuration signaling; transmit the demodulation reference signal according to the demodulation reference signal pattern indicated by the demodulation reference signal configuration signaling. Alternatively,

[0149] The method includes:

[0150] Determine the demodulation reference signal configuration signaling; transmit the demodulation reference signal configuration signaling.

[0151] Based on the above description of the implementation methods, those skilled in the art can clearly understand that this application can be implemented using software and necessary general-purpose hardware, and of course, it can also be implemented using hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the related technology, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a computer floppy disk, read-only memory (ROM), random access memory (RAM), flash memory, hard disk, or optical disk, etc., including several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0152] It is worth noting that in the embodiments of the above-mentioned device, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of each functional unit are only for easy differentiation and are not used to limit the scope of protection of this application.

[0153] Those skilled in the art will understand that all or some of the steps, apparatuses, or functional modules / units in the methods disclosed above can be implemented as software, firmware, hardware, or suitable combinations thereof.

[0154] In hardware implementations, the division between functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. The corresponding software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, as is known to those skilled in the art, communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

Claims

1. A demodulation reference signal configuration method, applied to a first node, the method comprising: Receive demodulation reference signal configuration signaling; The demodulation reference signal is transmitted according to the demodulation reference signal pattern indicated by the configuration signaling of the demodulation reference signal.

2. The method according to claim 1, wherein, The step of transmitting the demodulation reference signal according to the demodulation reference signal pattern indicated by the configuration signaling includes: Determine the demodulation reference signal pattern information indicated by the demodulation reference signal configuration signaling; The demodulation reference signal is transmitted according to the demodulation reference signal pattern corresponding to the demodulation reference signal pattern information.

3. The method according to claim 1, wherein, The step of transmitting the demodulation reference signal according to the demodulation reference signal pattern indicated by the configuration signaling includes: The demodulation reference signal configuration signaling indicates a switch from the first demodulation reference signal pattern to the second demodulation reference signal pattern; The demodulation reference signal is transmitted according to the second demodulation reference signal pattern.

4. The method according to claim 1, wherein, The demodulation reference signal configuration signaling includes at least one of radio resource control signaling, media access control layer control unit signaling, or downlink control information.

5. The method according to claim 1, wherein, The demodulation reference signal configuration signaling includes at least one of a first signaling or a second signaling, wherein, The first signaling is used to indicate demodulation reference signal pattern information; The second signaling is used to indicate a switch from the first demodulation reference signal pattern to the second demodulation reference signal pattern.

6. The method according to claim 2 or 5, wherein, The demodulation reference signal pattern information includes uniform pattern information or non-uniform pattern information.

7. The method according to claim 2 or 5, wherein, The uniform type pattern information of the demodulation reference signal pattern information includes at least one of the following: the number of code division multiplexing groups, the proportion of scheduling bandwidth corresponding to each code division multiplexing group, the location or number of resource units mapped and occupied by each code division multiplexing group, and the maximum number of demodulation reference signal ports supported by each code division multiplexing group.

8. The method according to claim 7, wherein, The number of code division multiplexing groups in the uniform type pattern includes at least one of the following: 2, 3, 4, 6, 8, 12.

9. The method according to claim 7, wherein, The resource units occupied by the same code division multiplexing group are spaced at equal intervals, and the number of resource units occupied by one code division multiplexing group in one physical resource block is at least one of the following: 12, 6, 4, 3, 2, 1.

10. The method according to claim 2 or 5, wherein, The non-uniform type pattern information of the demodulation reference signal pattern information is composed of at least two uniform type pattern information. The non-uniform type pattern information includes at least one of the following: the number of uniform type pattern information, multiple uniform type pattern information, and the scheduling resource unit location information corresponding to each uniform type pattern information.

11. The method according to claim 10, wherein, The location information of the scheduling resource unit corresponding to the uniform type pattern information is one of the following: The location of scheduling resource units is stored based on a bitmap, where the smallest scheduling unit in the bitmap is a resource block group (RBG) or a physical resource group (PRG). The location of the scheduling resource unit is saved by the starting position and the length.

12. The method according to claim 1, further comprising: In response to determining that the demodulation reference signal configuration signaling has not been received, the demodulation reference signal is transmitted according to the demodulation reference signal pattern corresponding to the default demodulation reference signal pattern information, wherein the default demodulation reference signal pattern information is uniform type pattern information.

13. The method according to claim 3 or 5, wherein, The first demodulation reference signal pattern is the demodulation reference signal pattern corresponding to the currently transmitted demodulation reference signal; the second demodulation reference signal pattern is the demodulation reference signal pattern corresponding to the demodulation reference signal to be switched.

14. The method according to claim 3 or 5, wherein, The demodulation reference signal pattern information corresponding to the first demodulation reference signal pattern is not completely the same as the demodulation reference signal pattern information corresponding to the second demodulation reference signal pattern.

15. The method according to claim 14, wherein, The difference between the demodulation reference signal pattern information corresponding to the first demodulation reference signal pattern and the demodulation reference signal pattern information corresponding to the second demodulation reference signal pattern includes the difference in the time domain symbols of the demodulation reference signal, wherein the difference in the time domain symbols includes at least one of the following: the number of time domain symbols is different or the position of the time domain symbols is different.

16. A demodulation reference signal configuration method, applied to a second node, the method comprising: Determine the demodulation reference signal configuration signaling; Transmit the demodulation reference signal configuration signaling.

17. The method according to claim 16, wherein, The demodulation reference signal configuration signaling includes at least one of radio resource control signaling, media access control layer control unit signaling, or downlink control information.

18. The method according to claim 16, wherein, The demodulation reference signal configuration signaling includes at least one of a first signaling or a second signaling, wherein, The first signaling is used to indicate demodulation reference signal pattern information; The second signaling is used to indicate a switch from the first demodulation reference signal pattern to the second demodulation reference signal pattern.

19. The method according to claim 18, wherein, The demodulation reference signal pattern information includes uniform pattern information or non-uniform pattern information.

20. The method according to claim 18, wherein, The uniform type pattern information of the demodulation reference signal pattern information includes at least one of the following: the number of code division multiplexing groups, the proportion of scheduling bandwidth corresponding to each code division multiplexing group, the location or number of resource units mapped and occupied by each code division multiplexing group, and the maximum number of demodulation reference signal ports supported by each code division multiplexing group.

21. The method according to claim 20, wherein, The number of code division multiplexing groups in the uniform type pattern includes at least one of the following: 2, 3, 4, 6, 8, 12.

22. The method according to claim 20, wherein, The resource units occupied by the same code division multiplexing group are spaced at equal intervals, and the number of resource units occupied by one code division multiplexing group in one physical resource block is at least one of the following: 12, 6, 4, 3, 2, 1.

23. The method according to claim 18, wherein, The non-uniform type pattern information of the demodulation reference signal pattern information is composed of at least two uniform type pattern information. The non-uniform type pattern information includes at least one of the following: the number of uniform type pattern information, multiple uniform type pattern information, and the scheduling resource unit location information corresponding to each uniform type pattern information.

24. The method according to claim 23, wherein, The location information of the scheduling resource unit corresponding to the uniform type pattern information is one of the following: The location of scheduling resource units is stored based on a bitmap, where the smallest scheduling unit in the bitmap is a resource block group (RBG) or a physical resource group (PRG). The location of the scheduling resource unit is saved by the starting position and the length.

25. The method according to claim 18, wherein, The first demodulation reference signal pattern is the demodulation reference signal pattern corresponding to the currently transmitted demodulation reference signal; the second demodulation reference signal pattern is the demodulation reference signal pattern corresponding to the demodulation reference signal to be switched.

26. The method according to claim 18, wherein, The demodulation reference signal pattern information corresponding to the first demodulation reference signal pattern is not completely the same as the demodulation reference signal pattern information corresponding to the second demodulation reference signal pattern.

27. The method according to claim 26, wherein, The difference between the demodulation reference signal pattern information corresponding to the first demodulation reference signal pattern and the demodulation reference signal pattern information corresponding to the second demodulation reference signal pattern includes the difference in the time domain symbols of the demodulation reference signal, wherein the difference in the time domain symbols includes at least one of the following: the number of time domain symbols is different or the position of the time domain symbols is different.

28. An electronic device comprising: One or more processors; Memory, used to store one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method as described in any one of claims 1-27.

29. A computer-readable storage medium storing one or more programs, said one or more programs being executed by one or more processors to implement the method as described in any one of claims 1-27.

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