CN111083739A - Method and device for allocating reference signal resources - Google Patents
Method and device for allocating reference signal resources Download PDFInfo
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- CN111083739A CN111083739A CN201910517641.7A CN201910517641A CN111083739A CN 111083739 A CN111083739 A CN 111083739A CN 201910517641 A CN201910517641 A CN 201910517641A CN 111083739 A CN111083739 A CN 111083739A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
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- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
Abstract
The invention provides a resource allocation method of reference signals, namely a device, the method comprises the following steps: the transmitting end node classifies the reference signal resource into a first-level reference signal resource and an N-level reference signal resource, wherein N is a positive integer greater than 1; and the transmitting end node sets a pseudo-randomization identifier in the resource block of the N-level reference signal resource, wherein the randomization identifier is used for eliminating the corresponding relation between the reference signal sequence and the time domain symbol position in the resource block of the N-level reference signal resource. The invention solves the problem that differentiated and classified service is difficult to realize through reference signal generation in the related technology, and achieves the effect of reference signal capable of realizing differentiated service.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for allocating reference signal resources.
Background
Reference signals play an important role in wireless communication systems, and wireless Positioning Reference Signals (PRS) have been introduced into LTE systems from Rel-9 for use in communication network-based positioning. The positioning reference signal will continue to be introduced in 5G and normalization work is in progress.
The application to the millimeter wave band is a new feature of 5G, and due to the characteristics of millimeter waves, the mode of polling beams in a high frequency band is a common method for enhancing the coverage. The time-domain density of the beams will affect the coverage and signal strength of the positioning reference signals, and thus affect the positioning accuracy. Frequency domain bandwidth is also an important factor affecting positioning accuracy.
Meanwhile, different terminals from different industries have different requirements on positioning accuracy, and providing different users with positioning services with different accuracies is also a new requirement for a 5G system and is also a trigger for bringing new charging services to operators. However, the traditional reference signal generation method is difficult to implement differentiated hierarchical service, and becomes more difficult after the terminal can perform position calculation and is supported, and a more direct solution is to provide different PRS configuration information for different users. However, the transmitted reference signal of the transmitting end node is a set of all user positioning reference signal configurations, reference signals for low-level service and high-level service are transmitted simultaneously, and if different levels of positioning service are configured for different users through different bandwidth configurations, the users can simply guess configuration information with larger bandwidth, so as to acquire a higher-level positioning reference signal configuration. Even if different positioning services are distinguished through different density configuration information of the time domain, a user can easily deduce possible positioning reference signal sequences and possible time domain positions of other time domain positions through a positioning reference signal generating formula. The existing reference signal generation methods cannot solve the problem. Therefore, no better solution exists for the problem that the differentiated hierarchical service is difficult to realize through the reference signal generation mode in the related art.
Disclosure of Invention
The embodiment of the invention provides a resource allocation method and a resource allocation device for reference signals, which are used for at least solving the problem that differentiated hierarchical service is difficult to realize through reference signal generation in the related art.
According to an embodiment of the present invention, there is provided a method for allocating resources of a reference signal, including: the transmitting end node classifies the reference signal resource into a first-level reference signal resource and an N-level reference signal resource; and the transmitting end node sets a pseudo-randomization identifier in the resource block of the N-level reference signal resource, wherein the randomization identifier is used for eliminating the corresponding relation 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.
According to an embodiment of the present invention, there is provided a reference signal resource allocation apparatus, in a transmitting end node, including: a classification module for classifying the reference signal resources into primary reference signal resources and N-level reference signal resources; a configuration module, configured to set a pseudo-randomization identifier in the resource block of the N-level reference signal resource, where the randomization identifier is used to eliminate a correspondence between a reference signal sequence and a time-domain symbol position in the resource block of the N-level reference signal resource, and N is a positive integer greater than 1.
According to a further embodiment of the present invention, there is also provided a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
According to yet another embodiment of the present invention, there is also provided an electronic device, including a memory in which a computer program is stored and a processor configured to execute the computer program to perform the steps in any of the above method embodiments.
By the invention, the reference signal resources with different levels are distributed for the services with different precisions. Meanwhile, a variable pseudo-randomized mark capable of eliminating the corresponding relation between the reference signal sequence and the time domain symbol position is set in high-precision services. Therefore, the problem that differentiated hierarchical service is difficult to realize through reference signal generation in the related art can be solved, and the effect of the reference signal of the differentiated service can be realized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
fig. 1 is a flowchart of a resource allocation method for reference signals according to an embodiment of the present invention;
FIG. 2 is a diagram of a reference signal resource according to an embodiment of the present invention;
FIG. 3 is a diagram of another reference signal resource according to an embodiment of the invention;
FIG. 4 is a block diagram of a system implementing a location reference service according to an embodiment of the present invention;
fig. 5 is a block diagram of a resource allocation apparatus for reference signals according to an embodiment of the present invention.
Detailed Description
The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
Example 1
In this embodiment, a method for allocating reference signal resources is provided, and fig. 1 is a flowchart of a method for allocating reference signal resources according to an embodiment of the present invention, as shown in fig. 1, the flowchart includes the following steps:
step S102, a transmitting end node classifies the reference signal resource into a first-level reference signal resource and an N-level reference signal resource, wherein N is a positive integer greater than 1;
step S104, the transmitting end node sets a pseudo-randomization identifier in the resource block of the N-level reference signal resource, wherein the randomization identifier is used for eliminating the corresponding relation between the reference signal sequence and the time domain symbol position in the resource block of the N-level reference signal resource.
Optionally, the setting, by the transmitting end node, a pseudo-randomized flag in a resource block of the N-level reference signal resource includes: the transmitting end node adds the parameter of the pseudo-random identification to the sequence initial value of the reference signal sequence of the resource block for generating the N-level reference signal resource.
Optionally, 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.
Fig. 2 is a diagram of a reference signal resource according to an embodiment of the invention. As shown in fig. 2, different patterns represent different sequences. The transmitting end node divides the reference signal resource in a reference signal interval into two levels, namely a first level and a second level. Specifically, the slashed portion is a primary serving reference signal resource. The cross line part is a secondary service reference signal resource. Blank is other reference signal resources. There are 2 reference signal resource sequences in each serving reference signal resource.
The reference signals transmitted by each symbol in each reference signal resource block serving the primary positioning requirement are correspondingly the same. As one example, the reference signal sequence is generated by the following equation:
wherein the sequence c (i) is generated as specified in section 3GPP TS 38.2115.2.1, x is related to the frequency domain resource mapping density of the sequence,
is the maximum transmission bandwidth of the reference signal.
As one example, the initial value of the primary reference signal sequence may be generated by:
or the like, or, alternatively,
wherein
Is the number of slots within a radio frame, is the symbol index within a slot,
is the number of symbols, s, contained in a reference signal resource blockiIs the position of the first symbol of the corresponding reference signal resource block,
to generate a reference signal identification for the initial value.
The reference signal sequences transmitted by the symbols of the reference signal resource blocks serving the secondary positioning requirement are the same and corresponding to each other, but different from the reference signal sequence of the resource block used for the primary positioning service, and as an example, the initial value of the reference signal sequence serving the secondary positioning requirement is generated by one of the following methods:
or the like, or, alternatively,
or the like, or, alternatively,
wherein
For the pseudo-random identification defined at the symbol level, a separate pseudo-random identification is used for the symbols in each reference signal resource.
Optionally, when the reference signal resource is a positioning reference signal resource, the method further includes: the transmitting end node sends resource configuration information to a positioning server, wherein the resource configuration information comprises: ranking information of the primary reference signal resource and the N-level reference signal resource; carrying resource information of the N-level reference signal resource of the pseudo-random identifier; and change rule information corresponding to the randomized mark.
Optionally, the method further comprises: receiving a positioning service request sent by a target node, and analyzing and determining the type of a positioning reference signal resource of the request; and sending resource configuration information corresponding to the requested positioning reference signal resource type to the target node.
Optionally, the sending resource configuration information corresponding to the requested positioning reference signal resource type to the target node includes: when the type of the requested positioning reference signal resource is determined to be the primary reference signal resource, the target node sends resource configuration information corresponding to the primary reference signal resource to the target node; when the type of the requested positioning reference signal resource is determined to be 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.
Optionally, the method further comprises: and in the change period of the pseudo-random identification, sending the updated pseudo-random identification to a target node corresponding to the N-level reference signal resource.
Optionally, the primary reference signal resource and the N-level reference signal resource each at least include: a resource block identification 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.
Fig. 3 is a diagram of another reference signal resource according to an embodiment of the invention. As shown in fig. 3, the different patterns in fig. 3 represent different sequences. The transmitting end node divides the reference signal resources in a reference signal interval into two stages, namely a first stage and a second stage and also three stages. Specifically, the slashed portion is a primary positioning service reference signal resource. The cross line part is a secondary positioning service reference signal resource. The lattice part is a three-level positioning service reference signal resource. There are 2 reference signal resource sequences in the primary and secondary positioning service reference signal resources. There are 1 reference signal resource sequence in the tertiary positioning service reference signal resource.
Fig. 4 is a diagram of a system for implementing a location reference service according to an embodiment of the present invention. As shown in fig. 4, includes: a transmitter node 42, a location service 44, and a target node 46.
Note that the transmitter-end node 42 includes: the base station, and the target node 46 includes: and (4) terminal equipment. Further, it should be noted that the transmitter end node 42 sends the location service reference signal resource to the location server 44. And may subsequently be acquired at terminal device 46 by sending a location request to location server 44. Of course in other cases, for example and without limitation, when the terminal device 46 is handed over from one cell to another cell, and the positioning server may not have acquired the positioning service reference signal resource of the transmitter end node 42 corresponding to another cell, the terminal device 46 may directly interact with the transmitter end node 42 to acquire the positioning service reference signal resource. When the terminal device A requests the first-level positioning service without payment, the positioning server does not inform the user of the sequence pseudo-random identification of the high-level positioning reference signal resource, so that the user cannot detect the high-level positioning reference signal resource, only the first-level positioning reference signal resource, namely the resources 0,4,8 and 12, and the positioning precision and the time delay of the positioning server only meet the first-level positioning service.
And the terminal equipment B pays for requesting a secondary positioning service of high-precision positioning, and the positioning server sends all configuration information of a primary positioning service reference signal resource and a secondary positioning service reference signal resource to the terminal equipment B, wherein the configuration information comprises pseudo random identifiers used by all symbols in the current secondary positioning service reference signal resource, the pseudo random identifiers of all symbols in one resource are the same, the pseudo random identifiers of all resources in one level are the same, and the pseudo random identifiers used by all symbols in the secondary positioning reference signal resources 2,6,10 and 14 are the same. After the pseudo-random identifier is obtained, the terminal device B may detect downlink positioning reference signal resources of eight beams, and the detected signal strength and number may be more, and the algorithm that can be used is richer, the positioning accuracy is higher, and the time delay is shorter.
And if the terminal equipment B does not meet the positioning service requirement of the current precision positioning. For example, if the user B is an annual member of the positioning service, and can also obtain a tertiary positioning service that has higher accuracy and can also provide additional services such as route prediction, the positioning server sends all configuration information of the primary positioning service reference signal resource, the secondary positioning service reference signal resource, and the tertiary positioning service reference signal resource to the terminal device B, including the pseudo random identifiers used by the symbols in the current advanced positioning reference signal resources (pseudo random identifier 1 corresponding to the secondary reference signal resource, pseudo random identifier 12 corresponding to the tertiary reference signal resource), the pseudo random identifiers of the symbols in one resource are the same, and the pseudo random identifiers of the resources in one level are the same, that is, the pseudo random identifiers used by the symbols in the secondary positioning reference signal resources 2,6,10,14 are the same, and the tertiary positioning reference signal resource 1, the pseudo-random identifiers used for the symbols in 3,5,7,9,11,13 are the same. After the pseudo-random identification is obtained, the detected signal strength is possibly more, the algorithm which can be used is richer, the positioning precision is higher, the time delay is shorter, and the functions are more.
After a period of time, the pseudo-random identifier of the advanced positioning reference signal resource changes, and at this time, the terminal device B has stopped paying the high-precision positioning service request, the positioning server does not tell the updated pseudo-random identifier to the terminal device B any more, the terminal device B cannot continue to enjoy the high-precision positioning service, and if the terminal device B is still in the high-precision service request, the positioning server sends the finer pseudo-random identifier to the terminal device B.
If the sequence generation formula of the secondary service does not have pseudo-random representation, after receiving the low-level configuration information, the user a can conclude that there may be resource 1 between 0 and 2 to be sent, and since the time domain interval between the resources 0 and 2 is limited and the reference signal generation has a strict correspondence to the time domain position, the terminal device a can detect the secondary positioning reference signal resource through a period of search.
Specifically, the sequences of the positioning reference signal resources of the same level may be the same or different. If the reference signal resources are different, the initial value generation formula is correspondingly changed, each reference signal resource above one level has a pseudo-random identifier, the variety of the pseudo-random identifiers increases the difficulty of cracking, and the value of the pseudo-random identifiers is
All possible combinations between the resources of the secondary reference signal are
Similarly, each symbol in each reference signal resource above one level has its own pseudo-random identifier, the number of pseudo-random identifiers is further increased, the difficulty of decoding is reduced, and the value of pseudo-random identifier is
All possible combinations between the resources of the secondary reference signal are
The same applies to ordinary services.
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 the corresponding function, and terminal device B does not need to be synchronized with cell n with high precision. A pseudo-random identity may be added to the sequence generation formula for the partial synchronization reference signal and the terminal device a is informed of the update of the pseudo-random identity during the high-accuracy synchronization service request of the terminal device a.
As another example, for a user with a high frequency CSI measurement requirement, the corresponding user is notified of an update of the pseudo-random ID during its service request.
Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (e.g., a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
Example 2
In this embodiment, a reference signal resource allocation apparatus is further provided, and the apparatus is used to implement the foregoing embodiments and preferred embodiments, and the description of the apparatus is omitted for brevity. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.
Fig. 5 is a block diagram of a resource allocation apparatus for reference signals according to an embodiment of the present invention, and as shown in fig. 5, the apparatus includes:
a classification module 52, configured to classify, by a transmitting end node, the reference signal resource into a first-level reference signal resource and an N-level reference signal resource, where N is a positive integer greater than 1;
a configuration module 54, configured to set a pseudo-randomization identifier in the resource block of the N-level reference signal resource, where the randomization identifier is used to eliminate a correspondence between a reference signal sequence and a time-domain symbol position in the resource block of the N-level reference signal resource.
It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.
Example 3
Embodiments of the present invention also provide a storage medium having a computer program stored therein, wherein the computer program is arranged to perform the steps of any of the above method embodiments when executed.
Alternatively, in the present embodiment, the storage medium may be configured to store a computer program for executing the steps of:
s1, the transmitting end node classifies the reference signal resource into a first-level reference signal resource and an N-level reference signal resource, wherein N is a positive integer greater than 1;
s2, the transmitting end node sets pseudo-randomization mark in the resource block of the N-level reference signal resource, wherein the randomization mark is used to eliminate the corresponding relation between the reference signal sequence and the time domain symbol position in the resource block of the N-level reference signal resource.
Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing computer programs, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.
Embodiments of the present invention also provide an electronic device comprising a memory having a computer program stored therein and a processor arranged to run the computer program to perform the steps of any of the above method embodiments.
Optionally, the electronic apparatus 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.
Alternatively, in the present embodiment, the storage medium may be configured to store a computer program for executing the steps of:
s1, the transmitting end node classifies the reference signal resource into a first-level reference signal resource and an N-level reference signal resource, wherein N is a positive integer greater than 1;
s2, the transmitting end node sets pseudo-randomization mark in the resource block of the N-level reference signal resource, wherein the randomization mark is used to eliminate the corresponding relation between the reference signal sequence and the time domain symbol position in the resource block of the N-level reference signal resource.
Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.
It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A method for allocating reference signal resources, comprising:
the transmitting end node classifies the reference signal resource into a first-level reference signal resource and an N-level reference signal resource, wherein N is a positive integer greater than 1;
and the transmitting end node sets a pseudo-randomization identifier in the resource block of the N-level reference signal resource, wherein the randomization identifier is used for eliminating the corresponding relation between the reference signal sequence and the time domain symbol position in the resource block of the N-level reference signal resource.
2. The method of claim 1, wherein the transmitter node sets a pseudo-randomized identity in resource blocks of the N-level reference signal resources, comprising:
the transmitting end node adds the parameter of the pseudo-random identification to the sequence initial value of the reference signal sequence of the resource block for generating the N-level reference signal resource.
3. The method of claim 1,
and 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.
4. The method of claim 1, wherein when the reference signal resource is a positioning reference signal resource, the method further comprises:
the transmitting end node sends resource configuration information to a positioning server, wherein the resource configuration information comprises:
ranking information of the primary reference signal resource and the N-level reference signal resource;
carrying resource information of the N-level reference signal resource of the pseudo-random identifier; and
and the change rule information corresponding to the randomization mark.
5. The method of claim 4, further comprising:
receiving a positioning service request sent by a target node, and analyzing and determining the type of a positioning reference signal resource of the request;
and sending resource configuration information corresponding to the requested positioning reference signal resource type to the target node.
6. The method of claim 5, wherein the sending resource configuration information corresponding to the requested positioning reference signal resource type to the target node comprises:
when the type of the requested positioning reference signal resource is determined to be the primary reference signal resource, the target node sends resource configuration information corresponding to the primary reference signal resource to the target node;
when the type of the requested positioning reference signal resource is determined to be 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.
7. The method of claims 1-6, further comprising: and in the change period of the pseudo-random identification, sending the updated pseudo-random identification to a target node corresponding to the N-level reference signal resource.
8. The method according to claims 1-6, comprising at least in each of the primary reference signal resource and the N-level reference signal resource:
a resource block identification 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.
9. An apparatus for allocating reference signal resources, in a transmitter node, comprising:
a classification module, configured to classify, by a transmitting end node, the reference signal resource into a first-level reference signal resource and an N-level reference signal resource, where N is a positive integer greater than 1;
a configuration module, configured to set a pseudo-randomization identifier in the resource block of the N-level reference signal resource, where the randomization identifier is used to eliminate a correspondence between a reference signal sequence and a time-domain symbol position in the resource block of the N-level reference signal resource.
10. A storage medium, in which a computer program is stored, wherein the computer program is arranged to perform the method of any of claims 1-8 when executed.
11. An electronic device comprising a memory and a processor, wherein the memory has stored therein a computer program, and wherein the processor is arranged to execute the computer program to perform the method of any of claims 1-8.
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| EP2652995B1 (en) * | 2010-12-14 | 2017-08-02 | LG Electronics Inc. | Techniques for measuring a location of ue |
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| US10660109B2 (en) * | 2016-11-16 | 2020-05-19 | Qualcomm Incorporated | Systems and methods to support multiple configurations for positioning reference signals in a wireless network |
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