CN115426015B - Beam management method and system - Google Patents
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- CN115426015B CN115426015B CN202210832966.6A CN202210832966A CN115426015B CN 115426015 B CN115426015 B CN 115426015B CN 202210832966 A CN202210832966 A CN 202210832966A CN 115426015 B CN115426015 B CN 115426015B
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- 238000007726 management method Methods 0.000 title claims abstract description 50
- 230000005540 biological transmission Effects 0.000 claims abstract description 124
- 238000000034 method Methods 0.000 claims description 16
- 238000004590 computer program Methods 0.000 claims description 11
- 238000001774 stimulated Raman spectroscopy Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 10
- 238000004891 communication Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
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- 239000002699 waste material Substances 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
- H04B7/0426—Power distribution
- H04B7/043—Power distribution using best eigenmode, e.g. beam forming or beam steering
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
Abstract
The invention provides a beam management method and a system, comprising the following steps: determining an SRS transmission sequence in a sounding reference signal SRS resource set; corresponding the SRS sending sequence with the candidate wave beam to determine a transmission symbol resource; and transmitting SRS by using a preset multiplexing transmission mode based on the transmission symbol resource. In the SRS multi-beam transmission scene, the invention only needs to configure a set of SRS resource sets, combines various multiplexing modes, reduces scanning time delay compared with a beam scanning scheme only adopting time division multiplexing, ensures that different SRS resources are simultaneously transmitted on a plurality of beams of an unused transceiver unit, and effectively saves the SRS resources.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a beam management method and system.
Background
With the rapid development of communication construction, low-frequency band spectrum resources become scarce, and millimeter wave frequency bands can provide larger bandwidths, so that the millimeter wave frequency bands become important frequency bands for future application of a mobile communication system. The millimeter wave band has different propagation characteristics, such as higher propagation loss, poor reflection and diffraction properties, etc., from the conventional low-band spectrum due to the shorter wavelength. Therefore, a larger-scale antenna array is generally adopted to form a shaped beam with larger gain, so that propagation loss is overcome, and system coverage is ensured.
In order to obtain the best transmission performance when performing link transmission by beamforming, it is generally necessary to search for the best transmit and receive beam pairs by using a measurement method of transmit and receive beam scanning. Since the analog beam can only transmit a limited number of shaped beams at the same time, the number of beams depends on the number of digital ports, one antenna digital port corresponds to one beam, and the beam width is narrow, and the same city can only cover a part of the area of the cell. In order to realize signal coverage of the whole cell, a transmission mode of joint scanning of a plurality of beams in a time domain is needed, namely, each beam sequentially covers different areas of the cell in a relay manner in a polling mode in a time period to realize coverage of the cell. For unicast transmission of a base station with a UE, the maximum link gain may be obtained when the beams between the base station and the UE are aligned. The procedure of aligning the transmit and receive beams of the base station and the UE is called a beam management procedure, as shown in fig. 1. After the initial beam pair is established, it is necessary to periodically re-evaluate whether the suspension of the receiving and transmitting beams is still appropriate due to movement, rotation, etc. of the terminal. Even if the terminal is stationary, changes in the surrounding environment, such as movement of objects, affect the previous beam pair, and thus real-time measurement of the beam pair is required to adjust the beam.
In order to efficiently utilize the highly directional transmission and reception in the case of beamforming, the channel sounding reference signals (Sounding Reference Signal, SRS) can be used for beam management in addition to channel state information (Channel State Information, CSI) acquisition, and uplink beam adjustment requires selection of an appropriate uplink transmit beam for the terminal and an appropriate uplink receive beam for the network. When uplink beam adjustment is required, the network needs to configure SRS to make measurements. The plurality of SRS Resource sets correspond to different antenna panels of the UE (the pointing directions of the different antenna panels are different), and the SRS Resource in the SRS Resource set corresponds to one beam, so that the plurality of SRS Resource in one Resource set cannot be transmitted simultaneously, namely only one beam can be transmitted simultaneously, and the SRS Resource in the different Resource sets can be transmitted simultaneously. An SRS may configure multiple sets of resources, each of which may contain multiple SRS resources. The SRS resource sets may be configured for multiple purposes, including beamManagement, codebook, nonCodebook and antaswitching, and when configured for beam management (beam management), resources in different resource sets may be transmitted simultaneously at the same time in the time domain, but resources in the same SRS resource set may only transmit one resource at the same time. Meanwhile, one orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbol can transmit only a limited number of analog beams, limited by the number of transceiver units TXRU (transceiver unit), and when the number of candidate beams is greater than the number of TXRUs, a plurality of OFDM symbols are required to transmit a plurality of beams in a time-sharing manner, as shown in fig. 2.
It can be found that there are two problems with the existing SRS beam transmission: (1) If the SRS is to be transmitted simultaneously on different multi-beams, a plurality of sets of SRS resource sets need to be configured, the SRS resources in each set of SRS resource sets can be transmitted simultaneously, the SRS resources are limited, and when the beam configuration is very many, the SRS resources are wasted; (2) When the number of SRS candidate beams is greater than the number of TXRUs, the SRS beams need to be transmitted in multiple OFDM symbols in a time-sharing manner, which increases the beam scanning time, and when the channel environment changes rapidly, the beam estimation is inaccurate.
Disclosure of Invention
The invention provides a beam management method and a system, which are used for solving the defects of low scanning efficiency and serious resource waste caused by only adopting time division multiplexing in SRS beam management in the prior art.
In a first aspect, the present invention provides a beam management method, including:
determining an SRS transmission sequence in a sounding reference signal SRS resource set;
corresponding the SRS sending sequence with the candidate wave beam to determine a transmission symbol resource;
and transmitting SRS by adopting a preset multiplexing transmission mode based on the transmission symbol resource.
According to the beam management method provided by the invention, before determining the SRS transmission sequence in the SRS resource set of the sounding reference signal, the method further includes:
and receiving the SRS resource set issued by the base station, and determining the beam management setting of the SRS resource set.
According to the beam management method provided by the invention, the determining the SRS sending sequence in the SRS resource set of the sounding reference signal comprises the following steps:
acquiring the number of antenna transmitting ports;
extracting a plurality of SRSs in the SRS resource set, and dividing the plurality of SRSs on the basis of the number average of the antenna transmission ports to obtain the SRS transmission sequence;
wherein, a plurality of SRS sequences in the SRS transmission sequence are mutually orthogonal.
According to the beam management method provided by the invention, the method for corresponding the SRS transmission sequence to the candidate beam, determining the transmission symbol resource includes:
if the candidate wave beams are determined to be more than or equal to the number of the antenna sending ports, determining to transmit on a plurality of OFDM symbols;
and if the candidate wave beam is determined to be smaller than the number of the antenna sending ports, determining to transmit on a single OFDM symbol.
According to the beam management method provided by the invention, the method for transmitting the SRS by adopting a preset multiplexing transmission mode based on the transmission symbol resource comprises the following steps:
if it is determined to transmit on multiple OFDM symbols, SRS is transmitted using FDM in combination with TDM, or CDM in combination with FDM and TDM.
According to the beam management method provided by the present invention, the method for transmitting SRS by using a preset multiplexing transmission mode based on the transmission symbol resource further includes:
if it is determined to transmit on a single OFDM symbol, SRS is transmitted in CDM or TDM mode.
In a second aspect, the present invention further provides a beam management system, including:
a determining module, configured to determine an SRS transmission sequence in the SRS resource set;
a corresponding module, configured to correspond the SRS transmission sequence to a candidate beam, and determine a transmission symbol resource;
and the sending module is used for sending the SRS by adopting a preset multiplexing transmission mode based on the transmission symbol resource.
In a third aspect, the present invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing any of the beam management methods described above when executing the program.
In a fourth aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a beam management method as described in any of the above.
In a fifth aspect, the invention also provides a computer program product comprising a computer program which, when executed by a processor, implements a beam management method as described in any of the above.
According to the beam management method and system provided by the invention, only one set of SRS resource set is required to be configured in the SRS multi-beam transmission scene, and various multiplexing modes are combined, so that compared with a beam scanning scheme only adopting time division multiplexing, the scanning time delay is reduced, different SRS resources are simultaneously transmitted on a plurality of beams of an unused transceiver unit, and the SRS resources are effectively saved.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of beam management provided by the prior art;
fig. 2 is a schematic diagram of SRS multi-beam transmission provided in the prior art;
fig. 3 is a schematic flow chart of a beam management method provided by the present invention;
fig. 4 is a schematic diagram of cdm+tdm multi-beam SRS transmission according to the present invention;
FIG. 5 is a second schematic diagram of CDM+TDM multi-beam SRS transmission provided by the present invention;
fig. 6 is a schematic diagram of fdm+tdm multi-beam SRS transmission provided by the present invention;
fig. 7 is a schematic diagram of cdm+fdm+tdm multi-beam SRS transmission provided by the present invention;
fig. 8 is a schematic structural diagram of a beam management system provided by the present invention;
fig. 9 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
For the limitation of the existing SRS beam management, for example, SRS is transmitted on different multiple beams simultaneously, multiple SRS resource sets need to be configured, which results in waste of SRS resources, and when the number of SRS candidate beams is greater than the number of TXRUs, beam scanning time is increased.
The present invention proposes a new beam management method, and fig. 3 is a flow chart of the beam management method provided by the present invention, as shown in fig. 3, including:
step 100: determining an SRS transmission sequence in a sounding reference signal SRS resource set;
step 200: corresponding the SRS sending sequence with the candidate wave beam to determine a transmission symbol resource;
step 300: and transmitting SRS by adopting a preset multiplexing transmission mode based on the transmission symbol resource.
In the invention, for the situation that the number of candidate beams exceeds the limit of the TXRU, only SRS resources in one SRS resource set are configured, and a plurality of beams are simultaneously transmitted in combination with a plurality of multiplexing transmission modes such as common multiplexing modes of Time division multiplexing (Time-Division Multiplexing, TDM), code division multiplexing (Code-Division Multiplexing, CDM), frequency division multiplexing (Frequency-Division Multiplexing, FDM) and the like.
Specifically, a set of SRS resource sets is configured, different SRS members in the resource sets are used to correspond to different antenna panels at the terminal side, meanwhile, transmission is performed on beams of the multiple antenna panels, SRS transmission sequences in the SRS resource sets are determined according to transmission resources, the determined SRS transmission sequences are corresponding to candidate beams, namely, a specific number of candidate beams are determined to be transmitted on which SRS transmission sequence elements, further required transmission symbol resources, typically orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM) symbols, are determined, and finally, the SRS is transmitted in a preset multiplexing transmission mode according to the determined transmission symbol resources.
It should be noted that, the present invention adopts OFDM, mainly because OFDM has the following characteristics: the channel is divided into a number of orthogonal sub-channels, and the high speed data signal is converted into parallel low speed sub-data streams, modulated onto each sub-channel for transmission. The orthogonal signals may be separated by employing correlation techniques at the receiving end, which may reduce mutual interference (ISI) between the sub-channels. The signal bandwidth on each sub-channel is less than the associated bandwidth of the channel, so that each sub-channel can be seen as flat fading, so that inter-symbol interference can be eliminated, and channel equalization is relatively easy since the bandwidth of each sub-channel is only a small fraction of the original channel bandwidth.
In the SRS multi-beam transmission scene, the invention only needs to configure a set of SRS resource sets, combines various multiplexing modes, reduces scanning time delay compared with a beam scanning scheme only adopting time division multiplexing, ensures that different SRS resources are simultaneously transmitted on a plurality of beams of an unused transceiver unit, and effectively saves the SRS resources.
Based on the foregoing embodiment, before determining the SRS transmission sequence in the SRS resource set of the sounding reference signal, the method further includes:
and receiving the SRS resource set issued by the base station, and determining the beam management setting of the SRS resource set.
Before transmission, a base station configures an SRS resource set for a terminal, and sets the attribute of the SRS resource set.
Here, the SRS resource set may be configured for multiple purposes, including beam management, decoding the codebook, non-decoding the codebook, and antenna switching, and when configured for beam management, the resources in different resource sets may be simultaneously transmitted at the same time in the time domain, but the resources in the same SRS resource set may only transmit one resource at the same time.
The invention realizes the function of SRS beam management by presetting the beam management attribute of SRS resources.
Based on any of the foregoing embodiments, the determining the SRS transmission sequence in the sounding reference signal SRS resource set includes:
acquiring the number of antenna transmitting ports;
extracting a plurality of SRSs in the SRS resource set, and dividing the plurality of SRSs on the basis of the number average of the antenna transmission ports to obtain the SRS transmission sequence;
wherein, a plurality of SRS sequences in the SRS transmission sequence are mutually orthogonal.
Specifically, when beam scanning is performed, a plurality of beams need to be transmitted. The terminal generates SRS sending sequence according to the received SRS resource configuration, different beams are configured with different SRS resource transmission or different port transmission of a multi-port SRS resource by the same resource set
SRS resources are generated according to the configuration of the base station, and SRSi is used for representing an SRS transmission sequence, wherein i corresponds to port numbers, such as i=0, 1, 2 and 3, and the SRSi are mutually orthogonal.
The configuration is performed according to the SRS resource antenna ports, and the average division principle is adopted, so that the SRS to be transmitted is evenly distributed according to the antenna ports, and it can be understood that the number of the antenna ports is different, that is, the corresponding divided SRS sequences are different, and the plurality of SRS sequences are mutually orthogonal.
According to the invention, by configuring a set of SRS resource sets, different SRS resources are simultaneously transmitted on a plurality of beams of different TXRUs, and the SRS resources are saved.
Based on any of the foregoing embodiments, the determining the transmission symbol resource by associating the SRS transmission sequence with the candidate beam includes:
if the candidate wave beams are determined to be more than or equal to the number of the antenna sending ports, determining to transmit on a plurality of OFDM symbols;
and if the candidate wave beam is determined to be smaller than the number of the antenna sending ports, determining to transmit on a single OFDM symbol.
Specifically, the present invention adopts different transmission settings according to the number of candidate beams and transceiver units TXRU, that is, the correspondence between antenna transmission ports.
When the number of the candidate beams is greater than or equal to the number of the antenna transmission ports, the candidate beams can be transmitted on a plurality of OFDM symbols in a mode of FDM+TDM or CDM+TDM or CDM+FDM+TDM;
when the candidate beam is smaller than the number of antenna transmission ports, only one OFDM symbol may be transmitted by CDM or FDM.
For example, according to the configuration of the base station, when 4 ports are configured, a group of SRS resources of 4 ports are generated, each port corresponds to one beam, port1 corresponds to beam1, port 2 corresponds to beam 2, port 3 corresponds to beam3, port 4 corresponds to beam 4, and the SRS resources are simultaneously transmitted on one OFDM symbol;
when 2 ports are configured, a group of SRS resources of 2 ports are generated, each port corresponds to one wave beam, and SRSi is sent on one OFDM symbol;
when the configuration is single-port, generating a plurality of groups of single-port SRS resources, distinguishing the SRS resources of each single-port according to the frequency domain position, wherein each single-port SRS resource corresponds to one wave beam, and transmitting SRSi on one OFDM symbol.
Thus, when multiple sets of multi-port SRS resources are generated, each port of each SRS resource corresponds to one beam, and SRSi is transmitted on one OFDM symbol.
According to the matching relation between the candidate wave beam and the antenna transmitting port, the invention adopts different coding modes and different OFDM symbol numbers for transmission, and has the characteristics of flexible setting and high transmission efficiency.
Based on any one of the foregoing embodiments, the transmitting SRS using a preset multiplexing transmission mode based on the transmission symbol resource includes:
if it is determined to transmit on multiple OFDM symbols, SRS is transmitted using FDM in combination with TDM, or CDM in combination with FDM and TDM.
Wherein, based on the transmission symbol resource, the method transmits SRS using a preset multiplexing transmission mode, and further comprises:
if it is determined to transmit on a single OFDM symbol, SRS is transmitted in CDM or TDM mode.
Specifically, taking 8 candidate beams and 4 TXRUs as examples, the following cases are classified:
1. according to the configuration of the SRS resource antenna ports, for the same SRS resource:
(1) When the number of SRS ports is configured to be 4, a set of SRS resources with a maximum of 4 ports can be generated, each port corresponds to a different Beam, and at most, the SRS resources can be transmitted on 4 different beams simultaneously, so that the transmission of 8 beams can be completed only by 2 OFDM symbols, as shown in fig. 4, the SRS transmission using cdm+tdm multi-Beam is adopted, beams 1 to 4 are transmitted on ports 1 to 4 (i.e. beams 1 to 4 in fig. 4 are distributed on ports 1 to 4) and occupy OFDM1 symbols, and beams 5 to 8 are transmitted on ports 1 to 4 (i.e. beams 5 to 8 in fig. 4 are distributed on ports 1 to 4) and occupy OFDM2 symbols;
(2) When the number of SRS ports is configured to be 4, a set of SRS resources with a maximum of 2 ports can be generated, each port corresponds to a different Beam, at most, the transmission of 8 beams can be completed by using 4 OFDM symbols simultaneously on 2 different beams, as shown in fig. 5, SRS transmission with cdm+tdm multi-Beam is adopted, beams 1 and 2 are respectively transmitted on ports 1 and 2 (i.e. Beam1-2 in fig. 5 is distributed on port 1-2), OFDM1 symbols are occupied, beams 3 and 4 are respectively transmitted on ports 1 and 2 (i.e. Beam3-4 in fig. 5 is distributed on port 1-2), OFDM2 symbols are occupied, beams 5 and 6 are respectively transmitted on ports 1 and 2 (i.e. Beam5-6 in fig. 5 is distributed on port 1-2), OFDM3 symbols are occupied, beams 7 and 8 are respectively transmitted on ports 1 and 2 (i.e. Beam7-8 in fig. 5 is distributed on port 1-2), and OFDM4 symbols are occupied.
2. Different SRS resources in the same SRS resource set can be configured with different frequency domain positions, each SRS resource corresponds to different beams, the SRS resource can be simultaneously transmitted on a plurality of beams, and 8-beam transmission is completed by 2 OFDM symbols, as shown in fig. 6, by adopting FDM+TDM multi-beam SRS transmission, beams 1 to 4 are respectively transmitted on frequency bands 1 to 4, OFDM1 symbols are occupied, beams 5 to 8 are respectively transmitted on frequency bands 1 to 4, and OFDM2 symbols are occupied.
3. Different SRS resources, a plurality of groups of maximum SRS resources with 4 ports can be configured, the SRS resources are mapped to a plurality of beams by adopting a tdm+fdm+cdm multiplexing mode and simultaneously transmitted, and 2 OFDM symbols are needed to complete the transmission of 8 beams, as shown in fig. 7, beams 1 to 4 occupy ports 1 to 4 respectively, occupy OFDM1 symbols, beams 5 to 8 transmit on frequency bands 1 to 4 respectively, occupy OFDM2 symbols, in addition, beams 1 and 2 adopt a first code group, beams 3 and 4 adopt a second code group, beams 5 and 6 adopt a third code group, and beams 7 and 8 adopt a fourth code group, so that the simultaneous transmission of a plurality of beams by adopting more multiplexing resources is achieved.
In summary, the specific flow of the scheme adopted by the invention comprises:
1) The base station configures an SRS resource set for the terminal, wherein the purpose of the resource set is set as 'beam management', namely the purpose of the SRS resource is set as beam management;
2) Generating SRS resources according to the configuration of the base station;
3) The SRS transmission sequence is represented by SRSi, i corresponds to port numbers (i=0, 1, 2, 3), where SRSi are mutually orthogonal to each other;
4) According to the configuration of the base station, when the configuration is 4 ports, a group of SRS resources of 4 ports are generated, each port corresponds to one beam, the port1 corresponds to the beam1, the port 2 corresponds to the beam 2, the port 3 corresponds to the beam3, the port 4 corresponds to the beam 4, and the SRS resources are simultaneously transmitted on one OFDM symbol;
5) According to the configuration of the base station, when the configuration is 2 ports, a group of SRS resources of the 2 ports are generated, each port corresponds to one wave beam, and SRSi is sent on one OFDM symbol;
6) According to the configuration of the base station, when the configuration is single-port, generating a plurality of groups of single-port SRS resources, wherein the SRS resources of each single-port are distinguished according to the frequency domain position, each single-port SRS resource corresponds to one wave beam, and SRSi is sent on one OFDM symbol;
7) According to the configuration of the base station, multiple groups of multi-port SRS resources can be generated, each port of each SRS resource corresponds to one beam, and SRSi is sent on one OFDM symbol.
The invention adopts various multiplexing technologies to scan the wave beam, compared with the traditional pure time division multiplexing wave beam scanning scheme, the invention can reduce the scanning time delay, and based on the number of unused transceiver units and the number of wave beam scanning candidate wave beams, SRS transmission uses different OFDM symbols, thereby realizing the transmission of more wave beams in one OFDM symbol and improving the resource utilization rate.
The beam management system provided by the invention is described below, and the beam management system described below and the beam management method described above can be referred to correspondingly.
Fig. 8 is a schematic structural diagram of a beam management system provided in the present invention, as shown in fig. 8, including: a determining module 81, a corresponding module 82 and a transmitting module 83, wherein:
the determining module 81 is configured to determine an SRS transmission sequence in the SRS resource set; the corresponding module 82 is configured to correspond the SRS transmission sequence to a candidate beam, and determine a transmission symbol resource; the transmitting module 83 is configured to transmit the SRS in a preset multiplexing transmission mode based on the transmission symbol resource.
In the invention, only one set of SRS resource set is needed to be configured in the SRS multi-beam transmission scene, and various multiplexing modes are combined, so that compared with a beam scanning scheme which only adopts time division multiplexing, the scanning time delay is reduced, different SRS resources are simultaneously transmitted on a plurality of beams of an unused transceiver unit, and the SRS resources are effectively saved.
Fig. 9 illustrates a physical schematic diagram of an electronic device, as shown in fig. 9, which may include: processor 910, communication interface (Communications Interface), memory 930, and communication bus 940, wherein processor 910, communication interface 920, and memory 930 communicate with each other via communication bus 940. Processor 910 can invoke logic instructions in memory 930 to perform a beam management method comprising: determining an SRS transmission sequence in a sounding reference signal SRS resource set; corresponding the SRS sending sequence with the candidate wave beam to determine a transmission symbol resource; and transmitting SRS by adopting a preset multiplexing transmission mode based on the transmission symbol resource.
Further, the logic instructions in the memory 930 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product comprising a computer program, the computer program being storable on a non-transitory computer readable storage medium, the computer program, when executed by a processor, being capable of performing the beam management method provided by the methods described above, the method comprising: determining an SRS transmission sequence in a sounding reference signal SRS resource set; corresponding the SRS sending sequence with the candidate wave beam to determine a transmission symbol resource; and transmitting SRS by adopting a preset multiplexing transmission mode based on the transmission symbol resource.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the beam management method provided by the above methods, the method comprising: determining an SRS transmission sequence in a sounding reference signal SRS resource set; corresponding the SRS sending sequence with the candidate wave beam to determine a transmission symbol resource; and transmitting SRS by adopting a preset multiplexing transmission mode based on the transmission symbol resource.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. A method of beam management, comprising:
determining an SRS transmission sequence in a sounding reference signal SRS resource set;
corresponding the SRS sending sequence with the candidate wave beam to determine a transmission symbol resource;
based on the transmission symbol resource, transmitting SRS by adopting a preset multiplexing transmission mode;
the determining the SRS transmission sequence in the sounding reference signal SRS resource set includes:
acquiring the number of antenna transmitting ports;
extracting a plurality of SRSs in the SRS resource set, and dividing the plurality of SRSs on the basis of the number average of the antenna transmission ports to obtain the SRS transmission sequence;
wherein a plurality of SRS sequences in the SRS transmission sequence are mutually orthogonal;
the step of corresponding the SRS transmission sequence to the candidate beam to determine a transmission symbol resource includes:
if the number of the candidate wave beams is larger than or equal to the number of the antenna sending ports, determining to transmit on a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols;
and if the candidate wave beam is determined to be smaller than the number of the antenna sending ports, determining to transmit on a single OFDM symbol.
2. The beam management method according to claim 1, wherein before determining the SRS transmission sequence in the sounding reference signal, SRS, resource set, further comprises:
and receiving the SRS resource set issued by the base station, and determining the beam management setting of the SRS resource set.
3. The beam management method according to claim 1, wherein the transmitting SRS in a preset multiplexing transmission mode based on the transmission symbol resources comprises:
if it is determined to transmit on multiple OFDM symbols, SRS is transmitted using frequency division multiplexing FDM in combination with time division multiplexing TDM, or code division multiplexing CDM in combination with TDM, or CDM in combination with FDM and TDM.
4. The beam management method according to claim 1, wherein the transmitting SRS using a preset multiplexing transmission mode based on the transmission symbol resources, further comprises:
if it is determined to transmit on a single OFDM symbol, SRS is transmitted in CDM or TDM mode.
5. A beam management system, comprising:
a determining module, configured to determine an SRS transmission sequence in the SRS resource set of the sounding reference signal;
a corresponding module, configured to correspond the SRS transmission sequence to a candidate beam, and determine a transmission symbol resource;
a transmitting module, configured to transmit an SRS using a preset multiplexing transmission mode based on the transmission symbol resource;
the determining module is specifically configured to:
acquiring the number of antenna transmitting ports;
extracting a plurality of SRSs in the SRS resource set, and dividing the plurality of SRSs on the basis of the number average of the antenna transmission ports to obtain the SRS transmission sequence;
wherein a plurality of SRS sequences in the SRS transmission sequence are mutually orthogonal;
the corresponding module is specifically configured to:
if the number of the candidate wave beams is larger than or equal to the number of the antenna sending ports, determining to transmit on a plurality of Orthogonal Frequency Division Multiplexing (OFDM) symbols;
and if the candidate wave beam is determined to be smaller than the number of the antenna sending ports, determining to transmit on a single OFDM symbol.
6. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the beam management method of any one of claims 1 to 4 when the program is executed by the processor.
7. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor implements the beam management method according to any of claims 1 to 4.
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