Reference signal resource allocation method and device

Abstract

The present invention provides a method or device for allocating resources of a reference signal, the method comprising: a transmitting end node classifies the reference signal resources into a primary reference signal resource and an N-level reference signal resource, N being a positive integer greater than 1; the transmitting end node sets a pseudo-randomization identifier in a resource block of the N-level reference signal resource, wherein the randomization identifier is used to eliminate the correspondence between the reference signal sequence and the time domain symbol position in the resource block of the N-level reference signal resource. Through the present invention, the problem that it is difficult to realize differentiated hierarchical services through reference signal generation in the related art is solved, and the effect of realizing a reference signal for differentiated services is achieved.

Description

Technical Field

[0001] The present invention relates to the field of communications, and in particular to a method and device for allocating reference signal resources. Background Art

[0002] Reference signals play an important role in wireless communication systems. The wireless positioning reference signal (PRS) has been introduced into the LTE system since Rel-9 and is used for positioning based on the communication network. Positioning reference signals will continue to be introduced in 5G, and standardization work is in progress.

[0003] The application of millimeter wave bands is a new feature of 5G. Due to the characteristics of millimeter waves, the use of beam polling in high frequency bands is a common method to enhance coverage. The time domain density of the beam will affect the coverage and signal strength of the positioning reference signal, thereby affecting the positioning accuracy. The frequency domain bandwidth is also an important factor affecting the positioning accuracy.

[0004] At the same time, different terminals from different industries have different requirements for positioning accuracy. Providing different users with different precision positioning services is also a new requirement for the 5G system and an opportunity to bring new charging services to operators. However, the traditional reference signal generation method is difficult to achieve differentiated hierarchical services, and it becomes more difficult after the terminal can be supported for position solution. The more direct solution is to provide different PRS configuration information for different users. However, the transmission reference signal of the transmitting node is a collection of all user positioning reference signal configurations. The reference signals for low-level services and high-level services will be transmitted at the same time. If different bandwidth configurations are used to configure different levels of positioning services for different users, users can easily infer the configuration information of larger bandwidths, thereby obtaining higher-level positioning reference signal configurations. Even if different positioning services are distinguished by different density configuration information in the time domain, users can easily infer possible positioning reference signal sequences and possible time domain positions at other time domain locations through the positioning reference signal generation formula. None of the existing reference signal generation methods can solve this problem. Therefore, there is no better solution to the problem that it is difficult to achieve differentiated hierarchical services through reference signal generation methods in related technologies. Summary of the invention

[0005] The embodiments of the present invention provide a method and device for allocating resources of a reference signal, so as to at least solve the problem in the related art that it is difficult to realize differentiated hierarchical services through reference signal generation.

[0006] According to one embodiment of the present invention, a method for allocating resources of a reference signal is provided, comprising: a transmitting node classifies reference signal resources into first-level reference signal resources and N-level reference signal resources; the transmitting node sets a pseudo-randomization identifier in a resource block of the N-level reference signal resources, wherein the randomization identifier is used to eliminate the correspondence between a reference signal sequence and a time domain symbol position in the resource block of the N-level reference signal resources, and N is a positive integer greater than 1.

[0007] According to one embodiment of the present invention, a resource allocation device for a reference signal is provided, which is located in a transmitting node and includes: a classification module, used to classify reference signal resources into first-level reference signal resources and N-level reference signal resources; a configuration module, used to set a pseudo-randomization identifier in a resource block of the N-level reference signal resource, wherein the randomization identifier is used to eliminate the correspondence between the reference signal sequence and the time domain symbol position in the resource block of the N-level reference signal resource, and N is a positive integer greater than 1.

[0008] According to yet another embodiment of the present invention, a storage medium is provided, in which a computer program is stored, wherein the computer program is configured to execute the steps of any one of the above method embodiments when running.

[0009] According to yet another embodiment of the present invention, there is provided an electronic device, including a memory and a processor, wherein the memory stores a computer program, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0010] Through the present invention, different levels of reference signal resources are allocated to services with different precisions. At the same time, a variable pseudo-random identifier that can eliminate the correspondence between the reference signal sequence and the time domain symbol position is set for high-precision services. Therefore, the problem that it is difficult to achieve differentiated hierarchical services through reference signal generation in the related art can be solved, and the effect of achieving a reference signal that can achieve differentiated services can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0012] Figure 1 is a flow chart of a method for allocating resources of a reference signal according to an embodiment of the present invention;

[0013] Figure 2 is a schematic diagram of a reference signal resource according to an embodiment of the present invention;

[0014] Figure 3 is a schematic diagram of another reference signal resource according to an embodiment of the present invention;

[0015] Figure 4 is a system structure diagram for implementing a positioning reference service according to an embodiment of the present invention;

[0016] Figure 5 It is a structural block diagram of a reference signal resource allocation device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0018] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0019] Example 1

[0020] In this embodiment, a method for allocating reference signal resources is provided. Figure 1 is a flow chart of a method for allocating reference signal resources according to an embodiment of the present invention. Figure 1 As shown, the process includes the following steps:

[0021] Step S102, the transmitting end node classifies the reference signal resources into level-1 reference signal resources and level-N reference signal resources, where N is a positive integer greater than 1;

[0022] Step S104: the transmitting node sets a pseudo-randomization identifier in the resource block of the N-level reference signal resource, wherein the randomization identifier is used to eliminate the correspondence between the reference signal sequence and the time domain symbol position in the resource block of the N-level reference signal resource.

[0023] Optionally, the transmitting node sets a pseudo-randomization identifier in the resource block of the N-level reference signal resource, including: the transmitting node adds a parameter of the pseudo-randomization identifier to a sequence initial value of a reference signal sequence generated for the resource block of the N-level reference signal resource.

[0024] Optionally, a reference signal sequence on each time domain symbol in each resource block in the N-level reference signal resource is different from a reference signal sequence on each time domain symbol in each resource block in the non-N-level reference signal resource.

[0025] Figure 2 is a schematic diagram of a reference signal resource according to an embodiment of the present invention. Figure 2As shown, different patterns in the figure represent different sequences. The transmitting node divides the reference signal resources in a reference signal interval into two levels, primary and secondary. Specifically, the oblique line part is the primary service reference signal resource. The cross line part is the secondary service reference signal resource. The blank part is other reference signal resources. Each service reference signal resource has 2 reference signal resource sequences.

[0026] The reference signals sent by each symbol in each reference signal resource block serving the primary positioning requirement are the same. As one example, the reference signal sequence is generated by the following formula:

[0027]

[0028] The sequence c(i) is generated as specified in 3GPP TS 38.211 Section 5.2.1, and x is related to the frequency domain resource mapping density of the sequence. is the maximum transmission bandwidth of the reference signal.

[0029] As one of the examples, the initial value of the primary reference signal sequence may be generated in the following manner:

[0030]

[0031] or,

[0032]

[0033] in is the number of time slots in a radio frame, l is the symbol index in a time slot, is the number of symbols contained in a reference signal resource block, s i is the position of the first symbol of the corresponding reference signal resource block, Identifier of the reference signal used to generate the initial value.

[0034] The reference signal sequences sent by each symbol of each reference signal resource block serving the secondary positioning requirement correspond to each other, but are different from the reference signal sequence of the resource block used for the primary positioning service. As one of the examples, the initial value of the reference signal sequence serving the secondary positioning requirement is generated by one of the following methods:

[0035]

[0036] or,

[0037]

[0038] or,

[0039]

[0040] in It is a pseudo-random identifier defined at the symbol level. Each symbol in the reference signal resource uses an independent pseudo-random identifier.

[0041] Optionally, when the reference signal resource is a positioning reference signal resource, the method further includes: the transmitting node sending resource configuration information to a positioning server, wherein the resource configuration information includes: hierarchical information of the first-level reference signal resource and the N-level reference signal resource; resource information of the N-level reference signal resource carrying the pseudo-randomization identifier; and change rule information corresponding to the randomization identifier.

[0042] Optionally, the method further includes: receiving a positioning service request sent by a target node, analyzing and determining a positioning reference signal resource type of the request; and sending resource configuration information corresponding to the positioning reference signal resource type of the request to the target node.

[0043] Optionally, the sending of resource configuration information corresponding to the requested positioning reference signal resource type to the target node includes: when it is determined that the requested positioning reference signal resource type is the first-level reference signal resource, the target node sending the resource configuration information corresponding to the first-level reference signal resource to the target node; when it is determined that the requested positioning reference signal resource type is the N-level reference signal resource, the target node sending the resource configuration information corresponding to the N-level reference signal resource and the resource configuration information corresponding to the reference signal resources below level N to the target node.

[0044] Optionally, the method further includes: within a change period of the pseudo-randomization identifier, sending the updated pseudo-randomization identifier to a target node corresponding to the corresponding N-level reference signal resource.

[0045] Optionally, the first-level reference signal resource and the N-level reference signal resource both include at least: a resource block identifier of the reference signal resource; a reference signal sequence identifier of the reference signal resource, a time domain density of the resource block of the reference signal resource, a frequency domain density of the resource block of the reference signal resource, a bandwidth of the reference signal resource, and the number of time domain symbols in the reference signal resource.

[0046] Figure 3 FIG. 4 is a schematic diagram of another reference signal resource according to an embodiment of the present invention. Figure 3 As shown, Figure 3Different patterns represent different sequences. The transmitting node divides the reference signal resources in a reference signal interval into two levels, namely, the first level, the second level, and the third level. Specifically, the oblique line part is the first level positioning service reference signal resource. The cross line part is the second level positioning service reference signal resource. The dot matrix part is the third level positioning service reference signal resource. There are 2 reference signal resource sequences in the first level and the second level positioning service reference signal resources. There is 1 reference signal resource sequence in the third level positioning service reference signal resource.

[0047] Figure 4 FIG. 1 is a system structure diagram for implementing a positioning reference service according to an embodiment of the present invention. Figure 4 As shown, it includes: a transmitting node 42, a positioning service 44 and a target node 46.

[0048] It should be noted that the transmitting node 42 includes: a base station, and the target node 46 includes: a terminal device. In addition, it should be noted that the transmitting node 42 sends the positioning service reference signal resource to the positioning server 44. The terminal device 46 can subsequently obtain it by sending a positioning request to the positioning server 44. Of course, in other cases, for example but not limited to, when the terminal device 46 switches from one cell to another cell, and the positioning server may not have obtained the positioning service reference signal resource of the transmitting node 42 corresponding to the other cell, the terminal device 46 can directly interact with the transmitting node 42 to obtain the positioning service reference signal resource. When the terminal device A requests a free first-level positioning service, the positioning server does not tell the user the sequence pseudo-random identifier of the advanced positioning reference signal resource, so the user will not be able to detect it, and can only detect the first-level reference signal resources, that is, resources 0, 4, 8, 12, whose positioning accuracy and delay are only satisfied with the first-level positioning service.

[0049] Terminal device B pays to request a high-precision secondary positioning service, then the positioning server sends all configuration information of the primary positioning service reference signal resources and the secondary positioning service reference signal resources to terminal device B, including the pseudo-random identifier used by each symbol in the current secondary positioning service reference signal resources, the pseudo-random identifiers of each symbol in a resource are the same, the pseudo-random identifiers of each resource at one level are also the same, and the pseudo-random identifiers used by each symbol in the secondary positioning reference signal resources 2, 6, 10, 14 are the same. After obtaining the pseudo-random identifier, terminal device B can detect the downlink positioning reference signal resources of the eight beams, and the detected signal strength may be greater in number, the algorithms that can be used are richer, the positioning accuracy is higher, and the delay is shorter.

[0050] If terminal device B does not meet the current positioning service requirements for precision positioning. For example, if user B is an annual member of the positioning service, he can also obtain a third-level positioning service with higher precision and can also provide additional services such as route prediction, then the positioning server sends all configuration information of the first-level positioning service reference signal resources, the second-level positioning service reference signal resources, and the third-level positioning service reference signal resources to terminal device B, including the pseudo-random identifier used by each symbol in each current advanced positioning reference signal resource (pseudo-random identifier 1 corresponding to the second-level reference signal resource, and pseudo-random identifier 12 corresponding to the third-level reference signal resource). The pseudo-random identifiers of each symbol in a resource are the same, and the pseudo-random identifiers of each resource at one level are also the same, that is, the pseudo-random identifiers used by each symbol in the second-level positioning reference signal resources 2, 6, 10, 14 are the same, and the pseudo-random identifiers used by each symbol in the third-level positioning reference signal resources 1, 3, 5, 7, 9, 11, 13 are the same. After obtaining the pseudo-random identifier, the detected signal strength may be more, the algorithms that can be used are richer, the positioning accuracy is higher, the delay is shorter, and the functions are more.

[0051] After a period of time, the pseudo-random identifier of the advanced positioning reference signal resource changes. At this time, terminal device B has stopped requesting paid high-precision positioning services. The positioning server no longer tells terminal device B the updated pseudo-random identifier, and terminal device B can no longer enjoy high-precision positioning services. If terminal device B is still in the process of requesting high-precision services, the positioning server will send a finer pseudo-random identifier to terminal device B.

[0052] If there is no pseudo-random representation in the sequence generation formula of the secondary service, user A can infer that resource 1 may be sent between 0 and 2 after receiving the low-level configuration information. Since the time domain interval between resources 0 and 2 is limited, and the generation of the reference signal has a strict correspondence with the time domain position, terminal device A can detect the secondary positioning reference signal resource through a period of search.

[0053] Specifically, the sequences of positioning reference signal resources of the same level can be the same or different. If they are different, the initial value generation formula will also change accordingly. Each reference signal resource above the first level has its own pseudo-random identifier. The diversity of pseudo-random identifiers increases the difficulty of cracking. The value of the pseudo-random identifier is Then all possible combinations of the secondary reference signal resources are

[0054] Similarly, each symbol in each reference signal resource above the first level has its own pseudo-random identifier. The number of pseudo-random identifiers increases further, and the difficulty of cracking is increased. The value of the pseudo-random identifier is Then all possible combinations of the secondary reference signal resources are

[0055] In addition, the same applies to ordinary services.

[0056] For example, terminal device A and terminal device B are both users in cell n, terminal device A needs to be synchronized with cell n with high precision to support corresponding functions, while terminal device B does not need to be synchronized with cell n with high precision. A pseudo-random identifier can be added to the sequence generation formula of the partial synchronization reference signal, and the update of the pseudo-random identifier can be notified to terminal device A during the high-precision synchronization service request of terminal device A.

[0057] As another example, for a user with a high-frequency CSI measurement requirement, the corresponding user is notified of the update of the pseudo-random ID during its service request.

[0058] Through the description of the above implementation methods, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0059] Example 2

[0060] In this embodiment, a reference signal resource allocation device is also provided, which is used to implement the above embodiments and preferred implementation modes, and the descriptions that have been made are not repeated. As used below, the term "module" can implement a combination of software and / or hardware of a predetermined function. Although the devices described in the following embodiments are preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceivable.

[0061] Figure 5 is a structural block diagram of a reference signal resource allocation device according to an embodiment of the present invention, such as Figure 5 As shown, the device comprises:

[0062] A classification module 52, configured for the transmitting end node to classify the reference signal resources into primary reference signal resources and N-level reference signal resources, where N is a positive integer greater than 1;

[0063] The configuration module 54 is used to set a pseudo-randomization identifier in the resource block of the N-level reference signal resource, wherein the randomization identifier is used to eliminate the correspondence between the reference signal sequence and the time domain symbol position in the resource block of the N-level reference signal resource.

[0064] It should be noted that the above modules can be implemented by software or hardware. For the latter, it can be implemented in the following ways, but not limited to: the above modules are all located in the same processor; or the above modules are located in different processors in any combination.

[0065] Example 3

[0066] An embodiment of the present invention further provides a storage medium, in which a computer program is stored, wherein the computer program is configured to execute the steps of any of the above method embodiments when running.

[0067] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0068] S1, the transmitting end node classifies the reference signal resources into level-1 reference signal resources and level-N reference signal resources, where N is a positive integer greater than 1;

[0069] S2, the transmitting node sets a pseudo-randomization identifier in the resource block of the N-level reference signal resource, wherein the randomization identifier is used to eliminate the correspondence between the reference signal sequence and the time domain symbol position in the resource block of the N-level reference signal resource.

[0070] Optionally, in this embodiment, the above-mentioned storage medium may include but is not limited to: a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk or an optical disk, and other media that can store computer programs.

[0071] An embodiment of the present invention further provides an electronic device, including a memory and a processor, wherein a computer program is stored in the memory, and the processor is configured to run the computer program to execute the steps in any one of the above method embodiments.

[0072] Optionally, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor, and the input / output device is connected to the processor.

[0073] Optionally, in this embodiment, the storage medium may be configured to store a computer program for performing the following steps:

[0074] S1, the transmitting end node classifies the reference signal resources into level-1 reference signal resources and level-N reference signal resources, where N is a positive integer greater than 1;

[0075] S2, the transmitting node sets a pseudo-randomization identifier in the resource block of the N-level reference signal resource, wherein the randomization identifier is used to eliminate the correspondence between the reference signal sequence and the time domain symbol position in the resource block of the N-level reference signal resource.

[0076] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation modes, and this embodiment will not be described in detail here.

[0077] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for allocating reference signal resources, characterized in that: include: The transmitting end node classifies the reference signal resources into multiple levels of reference signals, wherein the multiple levels of reference signals include a primary reference signal resource and an N-level reference signal resource, where N is a positive integer greater than 1; The transmitting node adds a parameter of a pseudo-randomization identifier to the sequence initial value of the reference signal sequence of the resource block generating the N-level reference signal resource, wherein the pseudo-randomization identifier is used to eliminate the correspondence between the reference signal sequence and the time domain symbol position in the resource block of the N-level reference signal resource, and the pseudo-randomization identifier is a pseudo-randomization identifier defined at the symbol level, and each symbol in the reference signal resource uses an independent pseudo-randomization identifier.

2. The method according to claim 1, characterized in that The reference signal sequence on each time domain symbol in each resource block in the N-level reference signal resource is different from the reference signal sequence on each time domain symbol in each resource block in the non-N-level reference signal resource.

3. The method according to claim 1, characterized in that When the reference signal resource is a positioning reference signal resource, the method further includes: The transmitting end node sends the resource configuration information to the positioning server, wherein the resource configuration information includes: Hierarchy information of the primary reference signal resources and the N-level reference signal resources; resource information of the N-level reference signal resource carrying the pseudo-randomization identifier; and The change rule information corresponding to the pseudo-randomization identifier.

4. The method according to claim 3, characterized in that The method further comprises: Receiving a positioning service request sent by a target node, and analyzing and determining a positioning reference signal resource type of the request; Send resource configuration information corresponding to the requested positioning reference signal resource type to the target node.

5. The method according to claim 4, characterized in that The sending the resource configuration information corresponding to the requested positioning reference signal resource type to the target node includes: When it is determined that the requested positioning reference signal resource type is the primary reference signal resource, the target node sends resource configuration information corresponding to the primary reference signal resource to the target node; When it is determined that the requested positioning reference signal resource type is the N-level reference signal resource, the target node sends resource configuration information corresponding to the N-level reference signal resource and resource configuration information corresponding to reference signal resources below the N-level to the target node.

6. The method according to any one of claims 1 to 5, characterized in that: The method further includes: within a change period of the pseudo-randomization identifier, sending the updated pseudo-randomization identifier to a target node corresponding to the corresponding N-level reference signal resource.

7. The method according to any one of claims 1 to 5, characterized in that The primary reference signal resource and the N-level reference signal resource both include at least: The resource block identifier of the reference signal resource; the reference signal sequence identifier of the reference signal resource, the time domain density of the resource block of the reference signal resource, the frequency domain density of the resource block of the reference signal resource, the bandwidth of the reference signal resource, and the number of time domain symbols in the reference signal resource.

8. A reference signal resource allocation device, characterized in that: Located in the transmitter node, including: A classification module, configured for the transmitting end node to classify the reference signal resources into multiple levels of reference signals, wherein the multiple levels of reference signals include a primary reference signal resource and an N-level reference signal resource, where N is a positive integer greater than 1; A configuration module is used to add a parameter of a pseudo-randomization identifier in the sequence initial value of the reference signal sequence of the resource block generating the N-level reference signal resource, wherein the pseudo-randomization identifier is used to eliminate the correspondence between the reference signal sequence and the time domain symbol position in the resource block of the N-level reference signal resource, and the pseudo-randomization identifier is a pseudo-randomization identifier defined at the symbol level, and each symbol in the reference signal resource uses an independent pseudo-randomization identifier.

9. A storage medium, characterized in that: The storage medium stores a computer program, wherein the computer program is configured to execute the method described in any one of claims 1 to 7 when running.

10. An electronic device comprising a memory and a processor, characterized in that: A computer program is stored in the memory, and the processor is configured to run the computer program to perform the method according to any one of claims 1 to 7.

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