CN110198207B - Wireless communication method and network equipment - Google Patents
Wireless communication method and network equipment Download PDFInfo
- Publication number
- CN110198207B CN110198207B CN201810160229.XA CN201810160229A CN110198207B CN 110198207 B CN110198207 B CN 110198207B CN 201810160229 A CN201810160229 A CN 201810160229A CN 110198207 B CN110198207 B CN 110198207B
- Authority
- CN
- China
- Prior art keywords
- csi
- granularity
- sequence
- frequency domain
- domain density
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- 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
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention discloses a wireless communication method and network equipment, wherein the method comprises the following steps: determining a configurable maximum frequency domain density of a channel state reference signal (CSI-RS) resource in a time unit, wherein the configurable maximum frequency domain density is independent of the number of antenna ports occupied by the CSI-RS resource; and generating a CSI-RS sequence according to the configurable maximum frequency domain density. The method of the embodiment of the invention can enable the network equipment to realize the sharing of the CSI-RS port and avoid the waste of communication resources.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and a network device for determining wireless communication.
Background
In the current communication system, a network device determines a channel state information Reference Signal (CSI-RS) sequence according to the number of ports for transmitting CSI-RS, the frequency domain density and the time-frequency domain position of CSI-RS resources configured in a time slot, but the number of transmission ports and the frequency domain density configured for the same terminal device or different terminal devices by the network device may be different, which makes it possible that CSI-RS sequences determined by the network device according to the number of ports and the frequency domain density and required to be transmitted to at least one terminal device are different, and different CSI-RS sequences may cause the network device to be unable to implement CSI-RS port sharing, resulting in waste of communication resources.
Disclosure of Invention
The embodiment of the invention provides a method for determining wireless communication and network equipment, and aims to solve the problem that CSI-RS port sharing cannot be realized due to different CSI-RS sequences which are determined by the network equipment and need to be sent by at least one terminal equipment.
In order to solve the technical problem, the invention is realized as follows:
in a first aspect, a method for wireless communication is provided, which is applied to a network device, and includes:
determining a configurable maximum frequency domain density of a channel state reference signal (CSI-RS) resource in a time unit, wherein the configurable maximum frequency domain density is independent of the number of antenna ports occupied by the CSI-RS resource;
and generating a CSI-RS sequence according to the configurable maximum frequency domain density.
In a second aspect, a network device is provided, the network device comprising:
a determining module, configured to determine a configurable maximum frequency domain density of a channel state reference signal, CSI-RS, resource in a time unit, where the configurable maximum frequency domain density is independent of a number of antenna ports occupied by the CSI-RS resource;
and the generating module is used for generating the CSI-RS sequence according to the configurable maximum frequency domain density.
In a third aspect, a network device is provided, comprising a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the method of wireless communication according to the first aspect.
In a fourth aspect, a computer-readable storage medium is provided, characterized in that the computer-readable storage medium has stored thereon a computer program which, when executed by a processor, implements the steps of the method of wireless communication according to the first aspect.
According to the technical scheme of the embodiment of the invention, the configurable maximum frequency domain density of the CSI-RS resource in a time unit is determined, and the CSI-RS sequence is generated according to the configurable maximum frequency domain density, so that the CSI-RS sequence which is determined by the network equipment according to the port number and the frequency domain density and needs to be sent to at least one terminal equipment is the same as the configurable maximum frequency domain density is unrelated to the number of antenna ports occupied by the CSI-RS resource, the CSI-RS port sharing of the network equipment is realized, and the waste of communication resources is avoided.
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 specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow diagram of a method of wireless communication in accordance with one embodiment of the present invention.
Fig. 2 is a schematic flow chart of a method of determining a granularity of a csi-rs sequence according to an embodiment of the present invention.
Fig. 3 is an example of the preset granularity determined as the granularity of the CSI-RS sequence according to an embodiment of the present invention.
Fig. 4 is another example of the preset granularity determined as the granularity of the CSI-RS sequence according to an embodiment of the present invention.
Fig. 5 is an example of granularity for selecting CSI-RS sequences from the candidate granularities, according to an embodiment of the invention.
Fig. 6 is a schematic structural diagram of a network device according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a network device according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the invention can be applied to various communication systems, such as: a global system for Mobile communications (GSM), a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS) system, a Long Term Evolution (Long Term Evolution, LTE)/enhanced Long Term Evolution (Long Term Evolution-advanced, LTE-a) system, a New air interface (New Radio, NR) system, etc., and then, those skilled in the art will understand that the embodiments of the present invention are not limited to the application of the above communication system.
A Terminal device (UE), which may also be referred to as a Mobile Terminal (Mobile Terminal), a Mobile User Equipment (UE), or the like, may communicate with one or more Core Networks (CN) via a Radio Access Network (e.g., Radio Access Network, RAN), and the User Equipment may be a Mobile Terminal, such as a Mobile phone (or referred to as a "cellular" phone) and a computer having a Mobile Terminal, such as a portable, pocket, handheld, computer-included, or vehicle-mounted Mobile device, and may exchange languages and/or data with the Radio Access Network.
The Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, an evolved node b (eNB or e-NodeB) and a 5G Base Station (gNB) in LTE, and a Base Station of a subsequent evolved version.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Fig. 1 is a method of wireless communication according to an embodiment of the present invention, and the method 100 shown in fig. 1 is applied to a network device. As shown in fig. 1, the method 100 includes:
s110, determining the configurable maximum frequency domain density of the CSI-RS resource in a time unit, wherein the configurable maximum frequency domain density is independent of the number of antenna ports occupied by the CSI-RS resource.
It is understood that the maximum frequency-domain density at which the CSI-RS resources can be configured in one time unit can be understood as the maximum value of the frequency-domain densities at which the CSI-RS resources are configured in one time unit and at different port numbers and in a Code Division Multiplexing (CDM) manner.
Optionally, in some embodiments, the network device may configure different frequency domain densities (Density) for different port numbers. For example, the number of ports and the frequency domain density corresponding to the number of ports may be configured in the manner shown in table 1. As shown in table 1, the frequency-domain density of the CSI-RS resources in one slot and with the number of ports being 1 and the CMD mode being CDM not employed is 3, the frequency-domain density of the CSI-RS resources in one slot and with the number of ports being 2 and the CDM mode being CDM over frequency domain (FD-CDM2) is 1 or 0.5, and the network device may determine from table 1 that the maximum frequency-domain density with which the CSI-RS resources can be configured in one slot is 3.
TABLE 1
And S120, generating a CSI-RS sequence according to the configurable maximum frequency domain density.
Optionally, in some embodiments, S120 specifically includes:
generating the CSI-RS sequence according to the following equations (1) and (2):
wherein r () represents the CSI-RS sequence, c () represents a pseudo-random sequence, ρmaxFor the maximum frequency domain density that can be configured,
represents the number of subcarriers included in one resource block RB, and p is the frequency domain density configured in one time unit of the CSI-RS resource, k' and
n is an integer greater than or equal to 0, and is specifically 0,1 …, where n is a parameter related to a frequency domain position occupied by the CSI-RS resource in one time unit.
It is understood that all formulas for generating CSI-RS sequences based on simple variants of formulas (1) and (2) are within the scope of the embodiments of the present invention. The scope of the present invention is not limited by the above formula.
Further, after generating the CSI-RS sequence, a CSI-RS sequence mapping function may be determined, the CSI-RS sequence mapping function being related to the power control coefficients, the orthogonal code function, and the sequence generation function. Here, the sequence generating function may be a function shown in formula (1). It should be noted that the specific form of the CSI-RS sequence mapping function is the same as that in the existing communication protocol, and is not described herein again.
In the embodiment of the invention, after the CSI-RS sequence is determined, the granularity of the CSI-RS sequence can be further determined. The method for determining granularity of a CSI-RS sequence according to an embodiment of the present invention will be described below with reference to specific embodiments.
Fig. 2 illustrates a method of determining granularity of a channel state information reference signal sequence according to one embodiment of the present invention. As shown in fig. 2, the method 200 is applied to a network device, such as a gNB, and includes:
s210, when the sub-band information reported by the terminal equipment is not detected, the granularity of the CSI-RS sequence is determined in one of a plurality of modes. In step S210, it is not detected that the subband information reported by the terminal includes the subband information not reported by the terminal, or the terminal has reported the subband information, and the network side has not correctly decoded the subband information. Those skilled in the art will appreciate that the "sub-band information reported by undetected terminal equipment" is not limiting.
In S210, the multiple ways include: and determining preset granularity as the granularity of the CSI-RS sequence, and selecting the granularity of the CSI-RS sequence from the candidate granularity.
Optionally, in some embodiments, the preset granularity is a default value. Further, in one embodiment, the default value may be set to 4, which may be independent of the Sub-band size (Sub-bandwidth) actually used by the terminal, and in one example, as shown in fig. 3, the CSI-RS sequence occupies 4 consecutive RBs in the frequency domain. However, this is not a limitation to the embodiment of the present application, and the network side device may apply other default values, for example, 2 or 8, according to the application scenario.
Optionally, in other embodiments, the default value is set to 1, and the granularity of the CSI-RS sequence is 1 RB consecutively. In this case, RBs occupied by the CSI-RS sequences may be adjacent to each other in the frequency domain, may not be adjacent, or may be adjacent to some RBs and other RBs, in other words, in the case of the default value of 1, the distribution of the CSI-RS sequences may be continuous, discrete, or distributed (distributed) in the frequency domain. For example, as shown in fig. 4, the granularity of the CSI-RS sequence is 1, and a portion of RBs occupied in the frequency domain are adjacent, and the portion of adjacent RBs is not adjacent to another portion of adjacent RBs. As in the method shown in fig. 4, it can be considered that the network device can transmit CSI-RS sequences on all RBs that are not occupied in the frequency domain.
Optionally, in some embodiments, the candidate granularity is at least one subband size corresponding to the current carrier bandwidth part. Wherein, selecting the granularity of the CSI-RS sequence from the candidate granularities may include: the granularity of the CSI-RS sequence is selected from at least one subband size corresponding to the current carrier bandwidth part, and in particular, in some embodiments, the granularity of the CSI-RS sequence is selected from at least one subband size corresponding to the current carrier bandwidth part, and the at least one subband size corresponding to the current carrier bandwidth part is determined according to the current carrier bandwidth part and a corresponding relationship between the carrier bandwidth part and the subband size. Specifically, in some embodiments, selecting the granularity of the CSI-RS sequence in the at least one subband size corresponding to the current carrier bandwidth part further includes selecting one from a maximum value of the subband sizes, or a minimum value of the subband sizes, or randomly selecting the one from the maximum value of the subband sizes, or the minimum value of the subband sizes.
For example, in the case where the Carrier Bandwidth Part (Carrier Bandwidth Part) corresponds to different numbers of PRBs, the number of PRBs of the subband size may have a minimum value and/or a maximum value, for example. For example, when the carrier bandwidth portion is 24-60, the subband size may be 6 or 12, so where 6 may be set to the minimum in this case and 12 to the maximum in this case, then the candidate granularity may be 6 and 12, then the network device may select the minimum 6 from the maximum, the minimum, or the maximum 12, or randomly select one from the minimum and the maximum.
In other words, assuming that there are two corresponding sub-band sizes when the number of RBs included in the carrier bandwidth part is 20 to 60, one sub-band size includes 6 RBs and the other sub-band size includes 12 RBs, as shown in fig. 5, if the number of RBs included in the current carrier bandwidth part is 26, the granularity of the CSI-RS may be determined to be 6, that is, the CSI-RS sequence occupies 6 RBs that are consecutive in the frequency domain. For the carrier bandwidth part in other ranges, the same is true, and for brevity, no further description is given.
In the foregoing embodiment, the network device (the method 200) determines the granularity of the CSI-RS sequence in one of multiple ways when the subband information reported by the terminal device is not detected, but the present invention is not limited thereto, and the network device may also determine the granularity of the CSI-RS sequence in one of multiple ways when the subband information reported by the terminal device is detected. When detecting the sub-band information reported by the terminal device, determining the granularity of the CSI-RS sequence by one of various ways may refer to each process of the embodiment of the method 200 in fig. 2, that is, the network device detects the sub-band information reported by the terminal device; determining granularity of a CSI-RS sequence through one of a plurality of ways, wherein the plurality of ways comprise: and determining preset granularity as the granularity of the CSI-RS sequence, and selecting the granularity of the CSI-RS sequence from the candidate granularity. To avoid repetition, further description is omitted here.
Fig. 1 above describes a method of wireless communication according to an embodiment of the present invention, and a method of determining granularity of a csi reference signal sequence according to an embodiment of the present invention is described in detail with reference to fig. 2, and a network device according to an embodiment of the present invention will be described in detail with reference to fig. 5.
Fig. 6 shows a block diagram of a network device according to one embodiment of the invention. As shown in fig. 6, the network device 600 includes:
a determining module 601, configured to determine a maximum configurable frequency-domain density of a CSI-RS resource in a time unit, where the maximum configurable frequency-domain density is independent of the number of antenna ports occupied by the CSI-RS resource;
a generating module 603, configured to generate a CSI-RS sequence according to the configurable maximum frequency domain density.
According to the embodiment of the invention, the network equipment determines the configurable maximum frequency domain density of the CSI-RS resource in a time unit, and generates the CSI-RS sequence according to the configurable maximum frequency domain density, and the configurable maximum frequency domain density is irrelevant to the number of antenna ports occupied by the CSI-RS resource, so that the CSI-RS sequences which are determined by the network equipment according to the number of the ports and the frequency domain density and need to be sent to at least one terminal equipment are the same, and further the network equipment realizes CSI-RS port sharing, and avoids waste of communication resources.
Optionally, as an embodiment, the generating module 603 is specifically configured to:
generating the CSI-RS sequence according to the following formula:
wherein r () represents the CSI-RS sequence, c () represents a pseudo-random sequence, ρmaxFor the maximum frequency domain density that can be configured,
represents the number of subcarriers included in one resource block RB, and p is the frequency domain density configured in one time unit of the CSI-RS resource, k' and
n is an integer greater than or equal to 0, and is specifically 0,1 …, where n is a parameter related to a frequency domain position occupied by the CSI-RS resource in one time unit.
Optionally, as an embodiment, the time unit is a time slot.
Optionally, as an embodiment, the determining module 601 is further configured to:
when the sub-band information reported by the terminal equipment is not detected, determining the granularity of the CSI-RS sequence in one of a plurality of modes;
wherein the plurality of modes include: and determining preset granularity as the granularity of the CSI-RS sequence, and selecting the granularity of the CSI-RS sequence from the candidate granularity.
In the embodiment of the invention, the network equipment determines the granularity of the CSI-RS sequence by one of various modes when the sub-band information reported by the terminal equipment is not detected, so that the network equipment can determine the granularity of the CSI-RS sequence when the sub-band information reported by the terminal equipment is not detected by the network equipment, and the CSI-RS sequence is successfully sent to the terminal equipment, thereby facilitating more accurate and efficient communication between the terminal and the network.
Optionally, as an embodiment, the preset granularity is a default value. Further, in one embodiment, the default value may be set to 4 or 1.
Optionally, as an embodiment, the candidate granularity is at least one subband size corresponding to the current carrier bandwidth part. The determining module 601 is specifically configured to:
and selecting the granularity of the CSI-RS from at least one sub-band size corresponding to the current carrier bandwidth part.
Optionally, as an embodiment, the determining module 601 is further configured to:
and determining at least one sub-band size corresponding to the current carrier bandwidth part according to the current carrier bandwidth part and the corresponding relation between the carrier bandwidth part and the sub-band size.
Optionally, as an embodiment, the determining module 601 is specifically configured to:
one of the maximum value of the sub-band size and the minimum value of the sub-band size is selected, or one of the maximum value and the minimum value is randomly selected.
The network device provided in the embodiment of the present invention can implement each process implemented by the network device in the method embodiments of fig. 1 and fig. 2, and is not described herein again to avoid repetition.
Those skilled in the art can understand that, in the embodiment in fig. 6, the determining module 601 and the generating module 603 may be inherited in one processing module, and the processing module may be implemented as a hardware circuit, or as software, or as a combination of hardware and software.
Referring to fig. 7, fig. 7 is a structural diagram of a network device applied in the embodiment of the present invention, which can implement details in the method embodiments shown in fig. 1 and fig. 2, and achieve the same effect. As shown in fig. 7, the network device 700 includes: a processor 701, a transceiver 702, a memory 703, a user interface 704 and a bus interface, wherein:
in this embodiment of the present invention, the network device 700 further includes: a computer program stored on the memory 703 and executable on the processor 701, the computer program when executed by the processor 701 implementing the steps of:
determining a configurable maximum frequency domain density of a channel state reference signal (CSI-RS) resource in a time unit, wherein the configurable maximum frequency domain density is independent of the number of antenna ports occupied by the CSI-RS resource;
and generating a CSI-RS sequence according to the configurable maximum frequency domain density.
Those skilled in the art will understand that the network device 700 further includes: a computer program stored on the memory 703 and executable on the processor 701, the computer program when executed by the processor 701 implementing the steps of: determining a configurable maximum frequency domain density of a channel state reference signal (CSI-RS) resource in a time unit, wherein the configurable maximum frequency domain density is independent of the number of antenna ports occupied by the CSI-RS resource; and generating a CSI-RS sequence according to the configurable maximum frequency domain density.
In fig. 7, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 701, and various circuits, represented by memory 703, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 702 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 704 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 may store data used by the processor 701 in performing operations.
In the embodiment of the invention, the network equipment determines the configurable maximum frequency domain density of the CSI-RS resource in a time unit, and generates the CSI-RS sequence according to the configurable maximum frequency domain density, and the configurable maximum frequency domain density is irrelevant to the number of antenna ports occupied by the CSI-RS resource, so that the CSI-RS sequences which are determined by the network equipment according to the number of the ports and the frequency domain density and need to be sent to at least one terminal equipment are the same, the network equipment realizes CSI-RS port sharing, and the waste of communication resources is avoided.
Optionally, as an embodiment, the computer program may further implement the following steps when being executed by the processor 701:
generating the CSI-RS sequence according to the following formula:
wherein r () represents the CSI-RS sequence, c () represents a pseudo-random sequence, ρmaxFor the maximum frequency domain density that can be configured,
represents the number of subcarriers included in one resource block RB, and p is the frequency domain density configured in one time unit of the CSI-RS resource, k' and
n is an integer greater than or equal to 0, and is specifically 0,1 …, where n is a parameter related to a frequency domain position occupied by the CSI-RS resource in one time unit.
Optionally, as an embodiment, the time unit is a time slot.
Optionally, as an embodiment, the computer program may further implement the following steps when being executed by the processor 701:
when the sub-band information reported by the terminal equipment is not detected, determining the granularity of the CSI-RS sequence in one of a plurality of modes;
wherein the plurality of modes include: and determining preset granularity as the granularity of the CSI-RS sequence, and selecting the granularity of the CSI-RS sequence from the candidate granularity.
In the embodiment of the invention, the network equipment determines the granularity of the CSI-RS sequence by one of various modes when the sub-band information reported by the terminal equipment is not detected, so that the network equipment can determine the granularity of the CSI-RS sequence when the sub-band information reported by the terminal equipment is not detected by the network equipment, and the CSI-RS sequence is successfully sent to the terminal equipment, thereby facilitating more accurate and efficient communication between the terminal and the network.
Optionally, as an embodiment, the preset granularity is a default value.
Optionally, as an embodiment, the candidate granularity is at least one subband size corresponding to a current carrier bandwidth part;
wherein the computer program, when being executed by the processor 701, further realizes the following steps:
and selecting the granularity of the CSI-RS sequence from at least one sub-band size corresponding to the current carrier bandwidth part.
Optionally, as an embodiment, the computer program may further implement the following steps when being executed by the processor 701:
and determining at least one sub-band size corresponding to the current carrier bandwidth part according to the current carrier bandwidth part and the corresponding relation between the carrier bandwidth part and the sub-band size.
Optionally, as an embodiment, the computer program may further implement the following steps when being executed by the processor 701:
one of the maximum value of the sub-band size and the minimum value of the sub-band size is selected, or one of the maximum value and the minimum value is randomly selected.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the method embodiments shown in fig. 1 and fig. 2, and can achieve the same technical effect, and is not described herein again to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. 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 (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. A method of wireless communication applied to a network device, the method comprising:
determining a configurable maximum frequency domain density of a channel state reference signal (CSI-RS) resource in a time unit, wherein the configurable maximum frequency domain density is independent of the number of antenna ports occupied by the CSI-RS resource;
generating a CSI-RS sequence according to the configurable maximum frequency domain density;
the method further comprises the following steps: when the sub-band information reported by the terminal equipment is not detected, determining the granularity of the CSI-RS sequence in one of a plurality of modes;
wherein the plurality of modes include: and determining preset granularity as the granularity of the CSI-RS sequence, and selecting the granularity of the CSI-RS sequence from the candidate granularity.
2. The method of claim 1, wherein generating the CSI-RS sequence according to the configurable maximum frequency-domain density comprises:
generating the CSI-RS sequence according to the following formula:
wherein r () represents the CSI-RS sequence, c () represents a pseudo-random sequence, ρmaxFor the maximum frequency domain density that can be configured,
represents the number of subcarriers included in one resource block RB, and p is the frequency domain density configured in one time unit of the CSI-RS resource, k' and
n is an integer greater than or equal to zero, and is a parameter related to a frequency domain position occupied by the CSI-RS resource in a time unit.
3. A method according to claim 1 or 2, wherein the time units are time slots.
4. The method of claim 1, wherein the predetermined granularity is a default value.
5. The method of claim 1, wherein the candidate granularity is at least one subband size corresponding to a current carrier bandwidth portion;
wherein the selecting the granularity of the CSI-RS sequence from the candidate granularities comprises:
and selecting the granularity of the CSI-RS sequence from at least one sub-band size corresponding to the current carrier bandwidth part.
6. The method of claim 5, further comprising:
and determining at least one sub-band size corresponding to the current carrier bandwidth part according to the current carrier bandwidth part and the corresponding relation between the carrier bandwidth part and the sub-band size.
7. The method of claim 5, wherein selecting the granularity of the CSI-RS sequence from at least one subband size corresponding to the current carrier bandwidth part comprises:
one of the maximum value of the sub-band size and the minimum value of the sub-band size is selected, or one of the maximum value and the minimum value is randomly selected.
8. A network device, comprising:
a determining module, configured to determine a configurable maximum frequency domain density of a channel state reference signal, CSI-RS, resource in a time unit, where the configurable maximum frequency domain density is independent of a number of antenna ports occupied by the CSI-RS resource;
a generating module, configured to generate a CSI-RS sequence according to the configurable maximum frequency domain density;
the determining module is further configured to determine granularity of the CSI-RS sequence in one of multiple ways when subband information reported by the terminal device is not detected;
wherein the plurality of modes include: and determining preset granularity as the granularity of the CSI-RS sequence, and selecting the granularity of the CSI-RS sequence from the candidate granularity.
9. A computer-readable medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method of wireless communication according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810160229.XA CN110198207B (en) | 2018-02-26 | 2018-02-26 | Wireless communication method and network equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810160229.XA CN110198207B (en) | 2018-02-26 | 2018-02-26 | Wireless communication method and network equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110198207A CN110198207A (en) | 2019-09-03 |
| CN110198207B true CN110198207B (en) | 2020-09-15 |
Family
ID=67751116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810160229.XA Active CN110198207B (en) | 2018-02-26 | 2018-02-26 | Wireless communication method and network equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110198207B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021062608A1 (en) * | 2019-09-30 | 2021-04-08 | 华为技术有限公司 | Method and apparatus for determining resource mapping of channel state information reference signal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8897272B2 (en) * | 2010-06-21 | 2014-11-25 | Fujitsu Limited | Radio communication system channel state information feedback method and device |
| CN102638337B (en) * | 2012-04-20 | 2015-01-07 | 电信科学技术研究院 | CSI (Channel State Information) reporting control method as well as CSI reporting method and device |
| CN106411805A (en) * | 2015-07-28 | 2017-02-15 | 中兴通讯股份有限公司 | Sending method of synchronizing signal of unauthorized carriers and base station |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201107363D0 (en) * | 2011-05-03 | 2011-06-15 | Renesas Mobile Corp | Method and apparatus for configuring resource elements for the provision of channel state information reference signals |
| CN102780532B (en) * | 2011-05-09 | 2016-06-08 | 华为技术有限公司 | The method of channel measurement and device |
| US10250366B2 (en) * | 2014-09-24 | 2019-04-02 | Lg Electronics Inc. | Method for transmitting and receiving reference signal in wireless communication system and apparatus therefor |
| CN106559162B (en) * | 2015-09-24 | 2020-03-06 | 索尼公司 | Apparatus and method for base station side and user equipment side for wireless communication |
-
2018
- 2018-02-26 CN CN201810160229.XA patent/CN110198207B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8897272B2 (en) * | 2010-06-21 | 2014-11-25 | Fujitsu Limited | Radio communication system channel state information feedback method and device |
| CN102638337B (en) * | 2012-04-20 | 2015-01-07 | 电信科学技术研究院 | CSI (Channel State Information) reporting control method as well as CSI reporting method and device |
| CN106411805A (en) * | 2015-07-28 | 2017-02-15 | 中兴通讯股份有限公司 | Sending method of synchronizing signal of unauthorized carriers and base station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110198207A (en) | 2019-09-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11665656B2 (en) | Information transmission method and information transmission apparatus | |
| CN110661601B (en) | Positioning reference signal configuration method, network side equipment and terminal equipment | |
| RU2731766C1 (en) | Wireless communication method and device | |
| CN114339987A (en) | Transmission method and device of positioning reference signal, storage medium and terminal | |
| JP6490212B2 (en) | Physical downlink control channel transmission method, base station apparatus, and user equipment | |
| CN110932828B (en) | Message receiving method, message sending method, terminal equipment and network side equipment | |
| CN112425228B (en) | Method and apparatus for resource indication | |
| CA3036518C (en) | Pilot signal transmission method and device | |
| RU2758106C1 (en) | Method for data transmission, terminal apparatus and network apparatus | |
| WO2022021345A1 (en) | Method and apparatus for downlink transmission in physical downlink control channel | |
| EP3573274A1 (en) | Communication method and network device | |
| KR20210008559A (en) | ＮＮＴＴＤＤ radio frame configuration and ＧＮＢ-inter-ＸN signaling of CLI sensitivity | |
| US11528705B2 (en) | Signal transmission method and device | |
| WO2018127180A1 (en) | Method and device for transmitting reference signal | |
| CN110198207B (en) | Wireless communication method and network equipment | |
| CN109802797B (en) | Method and network device for determining granularity of channel state information reference signal | |
| US10797775B2 (en) | Backhaul transmission method for wireless communication, controller, base station, and gateway | |
| EP3547750B1 (en) | Method for demodulating shared reference signal, terminal device, and network device | |
| CN109151846B (en) | CP type determination method, terminal device and base station | |
| US10237038B2 (en) | Information transmission method, device, and system | |
| WO2024216446A1 (en) | Frequency-domain comb resource allocation and multiplexing methods | |
| WO2019095880A1 (en) | Uplink power control method, and mobile communication terminal | |
| CN116325610A (en) | Methods, apparatus and computer program products for wireless communication | |
| CN118510012A (en) | Information processing method, device and readable storage medium | |
| CN115706613A (en) | DCI receiving method, DCI transmitting method, terminal, network device and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |