Disclosure of Invention
In order to solve the related technical problems, the embodiment of the application provides a communication method, a device, a communication device and a storage medium.
The embodiment of the invention provides a communication method, which is applied to a terminal and comprises the following steps:
The method comprises the steps of receiving first information from network equipment, wherein the first information is used for indicating waveform parameters of a terminal, and determining the first information according to first capability and/or first resources of the terminal, and the first resources represent resources allocated by the network equipment for the terminal;
And determining waveform parameters according to the first information.
In the above scheme, the first information comprises waveform parameters corresponding to each terminal in at least one terminal.
In the scheme, the first information comprises at least one first index, wherein the first index is used for indicating the waveform parameters of the terminal corresponding to the first index.
The first information comprises a first filter and at least one second index, wherein the second index is used for indicating the frequency shift coefficient of the terminal corresponding to the second index;
and multiplying the first filter by the frequency shift coefficient of the corresponding terminal to obtain the waveform parameter of the corresponding terminal.
In the above scheme, the first filter is determined according to the application scene requirement.
In the scheme, the waveform parameters comprise a filter and/or a windowing coefficient.
In the above scheme, the filter is a partial band filter.
In the above scheme, the receiving the first information from the network device includes receiving the waveform parameter in a semi-static mode or a dynamic mode.
In the above solution, the receiving the first information from the network device includes:
And receiving RRC signaling or DCI signaling from the network equipment, wherein the RRC signaling or the DCI signaling indicates the first information.
The embodiment of the invention provides a communication method which is applied to network equipment and comprises the following steps:
Determining first information according to first capacity and/or first resources of the terminal, wherein the first information is used for indicating waveform parameters of the terminal;
and sending the first information to the terminal.
In the above scheme, the first information comprises waveform parameters corresponding to each terminal in at least one terminal.
In the scheme, the first information comprises at least one first index, wherein the first index is used for indicating the waveform parameters of the terminal corresponding to the first index.
The first information comprises a first filter and at least one second index, wherein the second index is used for indicating the frequency shift coefficient of the terminal corresponding to the second index;
and multiplying the first filter by the frequency shift coefficient of the corresponding terminal to obtain the waveform parameter of the corresponding terminal.
In the above scheme, the method further comprises:
according to the application scene requirements, a first filter aiming at the corresponding application scene requirements is determined.
In the scheme, the waveform parameters comprise a filter and/or a windowing coefficient.
In the above scheme, the filter is a partial band filter.
In the above scheme, the waveform parameters are configured in a semi-static mode or a dynamic mode.
In the above solution, the sending the first information to the terminal includes:
and sending Radio Resource Control (RRC) signaling or Downlink Control Information (DCI) signaling to the terminal, wherein the RRC signaling or the DCI signaling indicates the first information.
The embodiment of the invention provides a communication device, which is applied to a terminal and comprises:
The terminal comprises a receiving module, a processing module and a processing module, wherein the receiving module is used for receiving first information from network equipment, the first information is used for indicating waveform parameters of the terminal, the first information is determined according to first capability and/or first resources of the terminal, and the first resources represent resources allocated by the network equipment for the terminal;
And the determining module is used for determining waveform parameters according to the first information.
In the above scheme, the first information comprises waveform parameters corresponding to each terminal in at least one terminal.
In the scheme, the first information comprises at least one first index, wherein the first index is used for indicating the waveform parameters of the terminal corresponding to the first index.
The first information comprises a first filter and at least one second index, wherein the second index is used for indicating the frequency shift coefficient of a terminal corresponding to the second index;
and multiplying the first filter by the frequency shift coefficient of the corresponding terminal to obtain the waveform parameter of the corresponding terminal.
In the above scheme, the first filter is determined according to the application scene requirement.
In the scheme, the waveform parameters comprise a filter and/or a windowing coefficient.
In the above scheme, the filter is a partial band filter.
In the above scheme, the receiving module is configured to receive the waveform parameter in a semi-static manner or a dynamic manner.
In the above scheme, the receiving module is configured to receive RRC signaling or DCI signaling from a network device, where the RRC signaling or DCI signaling indicates the first information.
The embodiment of the invention provides a communication device, which is applied to network equipment and comprises:
the processing module is used for determining first information according to the first capacity and/or first resources of the terminal, wherein the first information is used for indicating waveform parameters of the terminal;
And the sending module is used for sending the first information to the terminal.
In the above scheme, the first information comprises waveform parameters corresponding to each terminal in at least one terminal.
In the scheme, the first information comprises at least one first index, wherein the first index is used for indicating the waveform parameters of the terminal corresponding to the first index.
The first information comprises a first filter and at least one second index, wherein the second index is used for indicating the frequency shift coefficient of a terminal corresponding to the second index;
and multiplying the first filter by the frequency shift coefficient of the corresponding terminal to obtain the waveform parameter of the corresponding terminal.
In the above scheme, the processing module is further configured to determine, according to the application scenario requirement, a first filter for the corresponding application scenario requirement.
In the scheme, the waveform parameters comprise a filter and/or a windowing coefficient.
In the above scheme, the filter is a partial band filter.
In the above scheme, the waveform parameters are configured in a semi-static mode or a dynamic mode.
In some embodiments, the sending module is configured to send RRC signaling or DCI signaling to the terminal, where the RRC signaling or DCI signaling indicates the first information.
The embodiment of the invention provides a communication device which comprises a processor and a memory for storing a computer program capable of running on the processor,
Wherein the processor is configured to execute the steps of the communication method of any one of the network device sides when the computer program is executed, or
The processor is configured to execute the steps of any one of the communication methods at the terminal side when the computer program is executed.
The embodiment of the invention also provides a storage medium, on which a computer program is stored, which when being executed by a processor, realizes the steps of the communication method at the network equipment side, or
The computer program when executed by a processor implements the steps of the communication method of any one of the terminal sides.
The communication method, the device and the storage medium provided by the embodiment of the invention comprise the steps that network equipment determines first information according to first capability and/or first resources of a terminal, the first information is used for indicating waveform parameters of the terminal, the first resources characterize resources allocated by the network equipment to the terminal, the first information is sent to the terminal, and thus, the network equipment can perform configuration of the waveform parameters more flexibly according to the capability and/or the resources of different terminals, and is not limited to fixed waveform parameter configuration;
the terminal receives first information from the network equipment, the first information is used for indicating waveform parameters of the terminal, the first information is determined according to first capacity and/or first resources of the terminal, the first resources represent resources allocated by the network equipment to the terminal, the waveform parameters are determined according to the first information, and therefore the terminal can acquire the waveform parameters determined based on the capacity and/or the resources and is not limited to a fixed waveform parameter configuration.
Detailed Description
The present invention will be described in further detail with reference to examples, and the related art will be described.
Various multi-Carrier modulation waveform structures based on OFDM, such as weighted superposition windowed orthogonal frequency division multiplexing (CP-OFDM WITH WEIGHTED OverLap and Add), filter bank multi-Carrier (FBMC, filter Bank Multi-Carrier), universal filter multi-Carrier (UFMC, universal Filtered Multi-Carrier), orthogonal frequency division multiplexing based on partial band filtering (F-OFDM, filtered-OFDM), and the like, are proposed by companies at the time of designing a new air interface of 5G in the conference of the third generation partnership project (3GPP,3rd Generation Partnership Project) of 2016, which waveform technology should be used in a future B5G system is not unified at present.
The CP-OFDM technology in the current 5G standard uses a rectangular pulse window for modulation on each subcarrier, so that the system spectrum has high out-of-band leakage and strict synchronization requirement. The candidate new waveforms proposed by companies in the 2016-three GPP conference are all based on OFDM technology, and the optimization design of the waveforms is carried out in order to reduce the out-of-band leakage of a frequency spectrum and improve the utilization rate of time-frequency resources by means of windowing or filtering. However, these candidate new waveform techniques are all considered from a single angle (time domain angle or frequency domain angle) to reduce the problem of out-of-band leakage, and the degree of suppressing out-of-band leakage is limited, and the conversion processing of signals in the time domain and the frequency domain has extremely strong relevance, and the time domain focusing property and the frequency domain focusing property are a pair of contradictors. For example, a filter with good frequency domain focusing performance can be well restrained in the frequency domain by optimally designing the filter, but the restraining performance is in direct proportion to the order of the filter, the better the frequency domain out-of-band leakage restraining degree is, the higher the order of the filter is, the longer the time domain symbol is and the weaker the time domain focusing performance is. Secondly, only the requirement of the baseband side is considered when the window function or the filter is optimized, but the waveform characteristic of the baseband side is not considered, so that when the actual signal subjected to filtering modulation passes through the Radio Frequency (RF) front end, serious ICI or high PAPR is generated due to the nonlinear characteristics of the power amplifier, and a great amount of energy is wasted, and the cost of hardware equipment is increased. In addition, in the current 5G standard, only one waveform parameter configuration can be supported in the whole system bandwidth, different waveform parameters cannot be configured for different terminals, and the 5G and future wireless communication scenes are complex and changeable, and the current method for supporting only one waveform parameter configuration cannot adapt to the use of future multiple scenes.
Based on the method provided by the embodiment of the invention, the network equipment determines first information according to the first capability and/or the first resource of the terminal, wherein the first information is used for indicating the waveform parameter of the terminal, the first resource characterizes the resource allocated by the network equipment for the terminal, the first information is sent to the terminal, the corresponding terminal receives the first information from the network equipment, and the waveform parameter is determined according to the first information. In this way, the network device may perform configuration of waveform parameters more flexibly according to the capabilities and/or resources of different terminals, and is not limited to a fixed waveform parameter configuration.
The present invention will be described in further detail with reference to examples.
Fig. 1 is a flow chart of a communication method provided by an embodiment of the present invention, where as shown in fig. 1, the method is applied to a network device, and the network device may be a base station, an NG-RAN node (node), etc., and the method includes:
Step 101, determining first information according to first capability and/or first resources of a terminal, wherein the first information is used for indicating waveform parameters of the terminal;
Step 102, the first information is sent to a terminal.
In some embodiments, the waveform parameters include filters and/or windowing coefficients.
In practical application, the filter may be embodied as a partial band filter.
The partial band refers to a subset of frequencies of the entire carrier band, and the base station may configure only the partial band as a Bandwidth Part (BWP) for the terminal.
The name of the filter is not limited in the embodiment of the invention, and the filter operation can be realized, for example, the filter operation of BWP is realized.
In some embodiments, the waveform parameters are configured in a semi-static manner or in a dynamic manner.
In some embodiments, the first information may indicate the required waveform parameters for one terminal, or may indicate the required waveform parameters for each terminal for a plurality of terminals;
Specifically, the first information comprises waveform parameters corresponding to each terminal in at least one terminal.
In an application embodiment, an explicit configuration mode is provided, and a semi-static or dynamic configuration mode is adopted to directly inform a terminal of a filter and/or a windowing coefficient.
For example, in case the filter and/or windowing coefficient is not long in length, the waveform parameters are directly informed to the terminal in a data manner.
It is assumed that the network device determines waveform parameters of a plurality of terminals, that is, determines and transmits the first information ：hw,f＝[w1,w2,...wM,f1a+if1b,...,fNa+ifNb,];, where the information received by the terminal is [w1,w2,...wM,f1a,f1b,...,fNa,fNb]., [ w1,w2,...wM ] represents a windowing coefficient of a certain terminal, consists of M real numbers, M is a length of a window function, [ f1a+if1b,...,fNa+ifNb ] represents a filter coefficient of a certain terminal, consists of N complex numbers, N is a filter length, i represents an imaginary unit, and fNa,fNb represents a real part and an imaginary part of an nth coefficient component, respectively.
The above examples are merely examples of waveform parameters that may be received by a terminal, and are not limited thereto. hw,f is formed by combining a window coefficient and a filter coefficient, wherein the window coefficient takes a real number, and the filter coefficient takes a complex number, so that after the optimal waveform parameters are obtained after optimization, the waveform parameters can be sent to the terminal in a real-valued mode.
In some embodiments, the first information comprises at least one first index, wherein the first index is used for indicating waveform parameters (i.e. filter and/or windowing coefficients) of a terminal corresponding to the first index.
Specifically, in an application embodiment, an implicit configuration manner is provided, that is, the filter and/or the windowing coefficient are not directly notified, but an indirect manner is adopted, for example, by configuring a filter and/or a windowing coefficient table under the assumption of different pre-configured resource sizes and/or terminal capabilities, and then, indicating by configuring an index under the filter and/or the windowing coefficient table in a semi-static or dynamic notification manner;
The first information sent by the network device includes each first index (each first index may be stored in a certain index table, where the first information includes the index table), the terminal side receives the first information, determines the first index corresponding to the first information, queries the filter and/or the windowing coefficient table based on the determined first index, and obtains the filter and/or the windowing coefficient corresponding to the terminal, that is, the waveform parameter.
Fig. 2 is a schematic diagram of an Index table provided by an embodiment of the present invention, and as shown in fig. 2, the preconfigured waveform parameter 1 is an Index number Index j corresponding to a waveform parameter hjw,f required to be directly returned to a terminal j, and the terminal j can directly obtain the waveform parameter hjw,f according to the Index number Index j. Wherein, the DCI field is used for indicating the RB.
Here, the index indicating the waveform parameter may be embodied in an independent bit field in DCI or encoded in association with a resource indication equal bit.
In some embodiments, the first information comprises the first information, including a first filter, at least one second index;
the second index is used for indicating the frequency shift coefficient of the terminal corresponding to the second index;
and multiplying the first filter by the frequency shift coefficient of the corresponding terminal to obtain the waveform parameter of the corresponding terminal.
Here, the first filter is determined by the network device according to the application scene requirement, and the first filter is applicable to the cell terminal of the application scene requirement corresponding to the first filter.
Based on this, the method further comprises determining a first filter for the respective application scenario requirement according to the application scenario requirement.
In an application embodiment, another implicit configuration manner is provided, by classifying application scenario requirements of all terminals in a cell, and then optimally designing a prototype filter (i.e., an example of a first filter) meeting the requirements of the terminals in the type according to the requirements of the terminals, so that filters used by different types of terminal groups are obtained by multiplying corresponding frequency shifts on the basis of the prototype filters optimally designed under the requirements of the type. According to different frequency shift amounts, an index table under the terminal group type is constructed, so that the terminal groups of different types can rapidly configure waveform parameters under the scene demand type group by the labels.
Fig. 3 is a schematic diagram of another index table provided by an embodiment of the application of the present invention, and fig. 2 and fig. 3 show two possible forms, in which the preconfigured parameter 1 in fig. 2 and the preconfigured parameter 2 in fig. 3 do not occur at the same time. Preconfigured parameter 1 in fig. 2 and preconfigured parameter 2 in fig. 3 are used to indicate waveform parameters. The preconfigured parameters 2 shown in fig. 3 are indices based on one prototype filter construction. As shown in fig. 3, different terminals (UEs) occupy different numbers of Resource Blocks (RBs) and the occupied RB locations (1, I) are also different. UE 2 occupies 3 RBs whose positions are i-1, i, i+1. The waveform parameters required by the UE 2 should meet the requirement of URLLC scenes after waveform optimization, and then the index numbers of the waveform parameters matched with the UE 2 are returned to the UE 2 from the index table through signaling.
When the method is applied, requirements of application scenes of all terminals in a cell can be classified in advance by network equipment, a prototype filter hw,f (namely an example of a first filter) meeting the requirements of the terminals can be optimally designed according to the requirements of the terminals, frequency shift coefficients f (Index j) can be multiplied on the basis of the prototype filter in consideration of different RB positions occupied by different terminals, index numbers (Index j) (namely an example of a second Index) correspond to different frequency shift amounts, preconfigured parameters 2 obtained by the terminals are hw,f f (Index j), namely the filters used by different types of terminal groups are obtained by multiplying corresponding frequency shifts on the basis of the prototype filters under the requirements of the application scenes, and accordingly, the configuration of wave-shaped parameters under the scene requirement type groups can be rapidly carried out by using the Index table of fig. 3 according to the different frequency shift amounts.
In some embodiments, the first information employs radio resource control layer (RRC, radio Resource Control) signaling or downlink control information (DCI, downlink Control Information) signaling.
Specifically, the sending the first information to the terminal includes:
And sending RRC signaling or DCI signaling to the terminal, wherein the RRC signaling or DCI signaling indicates the first information.
In practical application, in order to effectively improve the time-frequency resource utilization rate and asynchronous transmission performance of the system and improve the problem that a radio frequency end generates nonlinear damage to a transmission signal modulated by a new waveform due to the inherent high PAPR of a multi-carrier system, a great amount of energy is wasted, and therefore the cost of hardware equipment is increased, the waveform parameter optimization method is provided, so that the obtained new waveform can achieve both low out-of-band leakage and peak-to-average power ratio.
Based on this, in some embodiments, the first Resource characterizes a Resource allocated by the network device to the terminal, such as a plurality of Resource Blocks (RBs) allocated by the base station to the terminal;
The first capability of the terminal may be sent, by the corresponding terminal, capability indication information to the network device in advance, so as to inform the network device, for example, the capability indication information includes first indication information of a bandwidth combination supported by the terminal, second indication information indicating radio frequency characteristics of the terminal, and the like.
Specifically, the determining the first information according to the first capability and/or the first resource of the terminal includes:
according to the first capability and/or the first resource of the terminal, taking the Power spectral density (PSD, power SPECTRANL DENSITY) in a stop band of a transmitted signal as an optimization target, restricting the peak-to-average Power ratio (PAPR) value of the transmitted signal, and determining an optimal windowing coefficient and/or a filter coefficient;
and determining a filter according to the filter coefficients.
In particular, the parameters involved in the optimization process for the wave form coefficients are determined based on the first capabilities and/or the first resources, so that the filter and/or windowing coefficients obtained for each terminal are related to the size of the resources occupied by the terminal and/or the capabilities of the terminal, etc.
The terminal can send configuration waveform information to the network equipment in advance, wherein the configuration waveform information comprises the information such as the size of resources occupied by the terminal, the capability of the terminal, the communication service environment where the terminal is located and the like. Correspondingly, the network equipment receives the configuration waveform information and matches the configuration information sent by the terminal through the optimization design of waveform parameters.
In order to realize the optimal design of waveform parameters, a cascade module of time domain windowing and frequency domain filtering is constructed, PAPR suppression at the front end of the radio frequency is considered in the waveform optimal design of windowing coefficients and filter coefficients, the filter and/or windowing coefficients matched with the size of resources occupied by the terminal and/or the terminal capacity are subjected to joint optimal design, and the optimal filter and/or windowing coefficients are the waveform parameters to be configured of the terminal.
Fig. 4 is a schematic diagram of a transceiver structure of an uplink transmission system according to an embodiment of the present invention, where the uplink transmission system is applied to a network device and is used for optimizing waveform parameters. The transceiver shown in fig. 4 designs a new enhanced OFDM waveform (WF-CP-OFDM, windowing FILTERED CP-OFDM) by constructing a cascade of time-domain windowing and frequency-domain filtering at the transmitting end and jointly optimizing the cascade. The Subband filter is a frequency domain filtering module (wherein Subband filter Fk represents a partial band filter corresponding to terminal k), and Add Window is a time domain windowing module.
As shown in fig. 4, different terminals send respective Binary sequences (Binary Source k), obtain respective sending symbols Sk of each terminal through modulation mapping (i.e. Mapper k), transmit Sk on corresponding partial band filters (the number of subcarriers occupied by each partial band filter (i.e. Subband filter Fk) is nk, the number of subcarriers is used to represent the size of resources occupied by different terminals k), obtain a sending signal after partial band filtering through a partial band filter (i.e. Subband filter Fk), then obtain a time domain sending signal Sk through an Inverse Discrete Fourier Transform (IDFT) matrix (i.e. IDFT Vk), add a Cyclic Prefix (CP, cyclic Prefix) and perform windowing (mathematical symbol is represented as Wmk) to finally obtain a sending signal Xk after frequency domain filtering and time domain windowing. In the process, the Power Spectral Density (PSD) in a stop band of a transmitted signal is taken as an optimization target, the peak-to-average power ratio (PAPR) value (set constraint threshold Q) of the transmitted signal is constrained, meanwhile, windowing operation and filtering operation are required not to cause energy loss of the transmitted signal, and the optimal windowing coefficient and/or filter coefficient corresponding to each terminal are determined. In addition, in fig. 4, the Remove Window, the N-points DFT, MATCHED FLITER Fk-1 are modules of inverse operations corresponding to windowing (add Window), inverse fourier transform (IDFT), filtering (subband filter Fk), respectively, for performing corresponding demodulation operations on the terminal side. And will not be described in detail.
The parameters of the filter or window function length, the occupied frequency band, the number of subcarriers (nk) in the occupied part of the frequency band, the number of IDTF points, the length of adding cyclic prefix, the terminal power capability PAPR constraint value Q and the like related in the process are set based on the occupied resource sizes of different terminals k or the capability of the terminals k.
Specifically, a corresponding relation is preset, wherein the corresponding relation comprises a filter or window function length, a occupied frequency band size, the number of subcarriers in the occupied part of the frequency band, the number of IDTF points, a cyclic prefix adding length and the like, wherein the filter or window function length, the occupied frequency band size, the number of subcarriers in the occupied part of the frequency band, the number of IDTF points, the cyclic prefix adding length and the like are respectively corresponding to the sizes of resources occupied by various terminals
The capacity of each terminal is respectively corresponding to the length of a filter or window function, the size of a occupied frequency band, the number of subcarriers in a occupied partial frequency band, the number of IDTF points, the length of a cyclic prefix added, the grade of UE, the PAPR constraint value of the power capacity of the terminal, and the like.
And determining by inquiring the preset corresponding relation during application.
In this way, it is achieved that according to the first capability and/or the first resource of the terminal, an optimal windowing coefficient and/or a filter coefficient is determined by taking a preset optimization rule (i.e. the minimum PSD of the transmitted signal is the optimization target, the peak-to-average power ratio PAPR value of the transmitted signal is constrained, and the windowing operation and the filtering operation are required not to cause energy loss of the transmitted signal), and further, the filter is determined according to the filter coefficient.
Further, the design of WF-CP-OFDM waveform is mainly realized by constructing optimization problem, wherein the optimization objective is to minimize the Power Spectral Density (PSD) in the stop band of the transmitted signal after passing through the cascade module, and the peak-to-average power ratio (PAPR, peak-average power ratio) value of the transmitted signal is restrained, and meanwhile, the windowing operation and the filtering operation should not cause energy loss of the transmitted signal. The specific formula is as follows:
s.t.fk(l)＝fk(Lf-1-l) (2);
PAPR(xw,f)dB≤Q (4);
wherein, the formula (1) represents that the Power Spectral Density (PSD) in a stop band of a transmitted signal after passing through the cascade module is minimum, which is an optimization target;
equation (2) represents the symmetry of the filter coefficients;
equation (3) shows that the windowing and filtering operations do not cause energy loss of the transmitted signal;
Equation (4) represents a constraint on the PAPR value, specifically within the threshold Q.
The characters in the formulas 1 (1) to (4) are described in detail as follows:
Represents the stop band energy in the objective function, bs represents the stop band region;
ejω represents a complex exponential sequence,Representing the power spectral density in the stop band of the windowed signal, HF () representing the result of Fourier transform of the kth filter, Vf representing the IDFT matrix of the kth filter coefficient vector fk, lf representing the length of the filter, k representing the identity of the terminal;
wk、fk is an optimization variable, namely a waveform parameter preconfigured by a kth terminal, wk represents a windowing coefficient, fk represents a filtering coefficient, and the expression is as follows:
The representation represents the windowing coefficients in a diagonal matrix form, diag represents the diagonal matrix,Representing a windowed coefficient vector.
Representing a filter represented in the form of a toeplitz matrix, Fk＝[fk(0),…,fk(Lf -1) represents a filter coefficient vector, where both Wk and Fk are obtained by mathematically deforming the windowed coefficient vector Wk and the filter coefficient vector Fk for the sake of convenience of matrix calculation.
Wherein Lcp represents the length of the added Cyclic Prefix (CP), Nfft represents the number of sampling points of Discrete Fourier Transform (DFT)/Inverse Discrete Fourier Transform (IDFT);
r represents a matrix with CPs added in the form of:
is a signal modulated by a WF-CP-OFDM waveform, B represents the total number of sub-bands,To normalize the power factor, trace () represents a matrix trace operation, and H represents a matrix transpose.
If the window (window) is properly designed, CP may not be added.
The waveform parameters obtained by the structure shown in fig. 4 are waveform parameters of a new enhanced OFDM waveform, which can give consideration to low out-of-band leakage and peak-to-average power ratio, not only effectively improve the time-frequency resource utilization rate and asynchronous transmission performance of the system, but also improve the problem that the radio frequency end generates nonlinear damage to the transmission signal modulated by the new waveform due to the inherent high PAPR of the multi-carrier system, and waste a large amount of energy, thereby improving the cost of hardware equipment.
Correspondingly, the embodiment of the invention provides a communication method applied to the terminal measurement.
Fig. 5 is a flowchart of another communication method provided in the embodiment of the present invention, as shown in fig. 5, the method is applied to a terminal, such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a Personal Digital Assistant (PDA), a tablet personal computer (PAD), a Portable Multimedia Player (PMP), a wearable device (such as a smart bracelet, a smart watch, etc.), a navigation device, etc., and the method includes:
Step 501, receiving first information from network equipment, wherein the first information is used for indicating waveform parameters of a terminal, the first information is determined according to first capability and/or first resources of the terminal, and the first resources characterize resources allocated by the network equipment to the terminal;
Step 502, determining waveform parameters according to the first information.
In some embodiments, the waveform parameters include filters and/or windowing coefficients.
In practical application, the filter may be a partial band filter, and the name of the filter is not limited in the embodiments of the present invention.
In some embodiments, the first information includes waveform parameters corresponding to each of at least one terminal.
In some embodiments, the first information includes at least one first index;
The first index is used for indicating waveform parameters of the corresponding terminal.
In some embodiments, the first information includes a first filter, at least one second index;
the second index is used for indicating the frequency shift coefficient of the terminal corresponding to the second index;
and multiplying the first filter by the frequency shift coefficient of the corresponding terminal to obtain the waveform parameter of the corresponding terminal.
In some embodiments, the waveform parameters are configured in a semi-static manner or in a dynamic manner. I.e. the terminal receives the required waveform parameters in a semi-static or dynamic manner.
The receiving the first information from the network device includes receiving the waveform parameters in a semi-static manner or a dynamic manner.
In some embodiments, the first filter is determined by the network device according to an application scenario requirement of the cell terminal;
The first filter is suitable for the cell terminal with the application scene requirement corresponding to the first filter.
An example is provided with respect to the first index, as specifically shown in fig. 2, and will not be described herein.
An example is provided with respect to the above second index, specifically as shown in fig. 3, and will not be described herein.
The method for determining the filter and/or windowing coefficients is described in the method shown in fig. 1, and the structure shown in fig. 4 is provided, which is not described here again.
In some embodiments, the receiving the first information from the network device includes:
And receiving RRC signaling or DCI signaling from the network equipment, wherein the RRC signaling or the DCI signaling indicates the first information.
Fig. 6 is a schematic diagram of preconfigured waveform parameters obtained for different terminals according to an embodiment of the present invention, where Channel Bandwidth is a channel bandwidth in MHz, CHANNEL EDGE is a channel edge, transmission Bandwidth Configuration NRB is an RB occupied by a transmission bandwidth configuration, guardband is a guard band, and two guard bands may be asymmetric (can be asymmetric).
As shown in fig. 6, different waveform parameters may be configured for different terminals, namely, a preconfigured waveform parameter 1 and a preconfigured waveform parameter 2, wherein the preconfigured waveform parameter 1 of the terminal 1 (UE 1) occupies 4 RBs, and the preconfigured waveform parameter 2 of the terminal 2 (UE 2) occupies 2 RBs.
FIG. 7 is a schematic diagram showing the comparison of the power spectral densities of the optimized enhanced waveform and the normalized waveform, as shown in FIG. 7, in which CP-OFDM is the normalized waveform and WF-CP-OFDM is the enhanced OFDM waveform obtained by the optimization problem in the present application. In the example simulation of fig. 7, it is assumed that the size of the resources occupied by each terminal is the same, that is, the number of subcarriers nk in a partial frequency band is the same, and the values of the relevant parameters can be modified according to the number of occupied resources of the terminal in practical application, which is not limited.
As can be seen from fig. 7, compared with the existing standardized waveform CP-OFDM, the enhanced OFDM waveform in the embodiment of the present invention not only can be configured with different waveform parameters for different terminals, but also has better out-of-band suppression performance, higher sporadic spectrum utilization, and more advantages in a communication environment with scarce future spectrum resources.
Fig. 8 is a schematic structural diagram of a communication device according to an embodiment of the present invention, where the device is applied to a network apparatus, as shown in fig. 8, and the device includes:
the processing module is used for determining first information according to the first capacity and/or first resources of the terminal, wherein the first information is used for indicating waveform parameters of the terminal;
And the sending module is used for sending the first information to the terminal.
In some embodiments, the first information includes waveform parameters corresponding to each of at least one terminal.
In some embodiments, the first information comprises at least one first index, wherein the first index is used for indicating waveform parameters of a terminal corresponding to the first index.
In some embodiments, the first information comprises a first filter and at least one second index, wherein the second index is used for indicating the frequency shift coefficient of a terminal corresponding to the second index;
and multiplying the first filter by the frequency shift coefficient of the corresponding terminal to obtain the waveform parameter of the corresponding terminal.
In some embodiments, the processing module is further configured to determine, according to the application scenario requirements, a first filter for the corresponding application scenario requirement.
In some embodiments, the waveform parameters include filters and/or windowing coefficients.
In some embodiments, the filter is a partial band filter.
In some embodiments, the waveform parameters are configured in a semi-static manner or in a dynamic manner.
In some embodiments, the sending module is configured to send RRC signaling or DCI signaling to the terminal, where the RRC signaling or DCI signaling indicates the first information.
It should be noted that, when implementing the corresponding communication method, the communication apparatus provided in the foregoing embodiment only uses the division of each program module to illustrate, and in practical application, the processing allocation may be implemented by different program modules according to needs, that is, the internal structure of the network device is divided into different program modules to implement all or part of the processing described above. In addition, the apparatus provided in the foregoing embodiments and the embodiments of the corresponding methods belong to the same concept, and specific implementation processes of the apparatus and the embodiments of the methods are detailed in the method embodiments, which are not described herein again.
Fig. 9 is a schematic structural diagram of another communication device according to an embodiment of the present invention, which is applied to a terminal, and as shown in fig. 9, the device includes:
The terminal comprises a receiving module, a processing module and a processing module, wherein the receiving module is used for receiving first information from network equipment, the first information is used for indicating waveform parameters of the terminal, the first information is determined according to first capability and/or first resources of the terminal, and the first resources represent resources allocated by the network equipment for the terminal;
And the determining module is used for determining waveform parameters according to the first information.
In some embodiments, the first information includes waveform parameters corresponding to each of at least one terminal.
In some embodiments, the first information comprises at least one first index, wherein the first index is used for indicating waveform parameters of a terminal corresponding to the first index.
In some embodiments, the first information comprises a first filter and at least one second index, wherein the second index is used for indicating the frequency shift coefficient of a terminal corresponding to the second index;
and multiplying the first filter by the frequency shift coefficient of the corresponding terminal to obtain the waveform parameter of the corresponding terminal.
In some embodiments, the first filter is determined according to application scenario requirements.
In some embodiments, the waveform parameters include filters and/or windowing coefficients.
In some embodiments, the filter is a partial band filter.
In some embodiments, the receiving module is configured to receive the waveform parameter in a semi-static manner or a dynamic manner.
In some embodiments, the receiving module is configured to receive RRC signaling or DCI signaling from a network device, where the RRC signaling or DCI signaling indicates the first information.
It should be noted that, when implementing the corresponding communication method, the communication device provided in the foregoing embodiment only uses the division of each program module to illustrate, and in practical application, the processing allocation may be implemented by different program modules according to needs, that is, the internal structure of the terminal is divided into different program modules to implement all or part of the processing described above. In addition, the apparatus provided in the foregoing embodiments and the embodiments of the corresponding methods belong to the same concept, and specific implementation processes of the apparatus and the embodiments of the methods are detailed in the method embodiments, which are not described herein again.
Fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present invention. As shown in fig. 10, the communication device 100 comprises a processor 1001 and a memory 1002 for storing a computer program capable of running on the processor;
When the processor 1001 is configured to execute the computer program, corresponding to the application of the communication device to a network device, the processor is configured to determine first information according to a first capability and/or a first resource of a terminal, where the first information is used to indicate a waveform parameter of the terminal, the first resource characterizes a resource allocated by the network device to the terminal, and send the first information to the terminal. Specifically, the network device may perform the method shown in fig. 1, which belongs to the same concept as the method embodiment shown in fig. 1, and detailed implementation procedures of the network device are detailed in the method embodiment, which is not described herein again.
The processor 1001 is configured to execute, when executing the computer program, when the communication device is applied to a terminal, to receive first information from a network device, where the first information is used to indicate waveform parameters of the terminal, the first information is determined according to a first capability and/or a first resource of the terminal, the first resource characterizes a resource allocated by the network device to the terminal, and the waveform parameters are determined according to the first information. Specifically, the terminal may execute the method shown in fig. 5, which belongs to the same concept as the communication method embodiment shown in fig. 5, and detailed implementation procedures of the terminal are detailed in the method embodiment, which is not described herein again.
In actual use, the communication device 100 may also include at least one network interface 1003. The various components in the communication device 100 are coupled together by a bus system 1004. It is to be appreciated that the bus system 1004 serves to facilitate connective communication between these components. The bus system 1004 includes a power bus, a control bus, and a status signal bus in addition to the data bus. The various buses are labeled in fig. 10 as bus system 1004 for clarity of illustration. The number of the processors 1001 may be at least one. The network interface 1003 is used for wired or wireless communication between the communication device 100 and other devices.
The memory 1002 in embodiments of the present invention is used to store various types of data to support the operation of the communication device 100.
The method disclosed in the above embodiment of the present invention may be applied to the processor 1001 or implemented by the processor 1001. The processor 1001 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in the processor 1001 or by instructions in the form of software. The Processor 1001 may be a general purpose Processor, a digital signal Processor (DSP, diGital Signal Processor), or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, or the like. The processor 1001 may implement or execute the methods, steps and logic blocks disclosed in the embodiments of the present invention. The general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in the embodiment of the invention can be directly embodied in the hardware of the decoding processor or can be implemented by combining hardware and software modules in the decoding processor. The software modules may be located in a storage medium in the memory 1002 and the processor 1001 reads information in the memory 1002, in combination with its hardware, to perform the steps of the method as described above.
In an exemplary embodiment, the communication device 100 may be implemented by one or more Application Specific Integrated Circuits (ASICs), DSPs, programmable logic devices (PLDs, programmable Logic Device), complex Programmable logic devices (CPLDs, complex Programmable Logic Device), field-Programmable gate arrays (FPGAs), general purpose processors, controllers, microcontrollers (MCUs, micro Controller Unit), microprocessors (microprocessors), or other electronic elements for performing the aforementioned methods.
The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored;
when the computer program is executed by a processor, the method is executed, wherein the method is corresponding to the situation that the computer program is stored in the network equipment and applied to the network equipment, the method is executed, the first information is determined according to first capability and/or first resources of the terminal, the first information is used for indicating waveform parameters of the terminal, the first resources represent resources allocated by the network equipment for the terminal, and the first information is sent to the terminal. Specifically, the network device may perform the method shown in fig. 1, which belongs to the same concept as the method embodiment shown in fig. 1, and detailed implementation procedures of the network device are detailed in the method embodiment, which is not described herein again.
When the computer program is applied to the terminal, the computer program is executed by a processor, wherein the computer program is used for receiving first information from the network equipment, the first information is used for indicating waveform parameters of the terminal, the first information is determined according to first capacity and/or first resources of the terminal, the first resources represent resources allocated by the network equipment to the terminal, and the waveform parameters are determined according to the first information. Specifically, the terminal may execute the method shown in fig. 5, which belongs to the same concept as the communication method embodiment shown in fig. 5, and detailed implementation procedures of the terminal are detailed in the method embodiment, which is not described herein again.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is merely a logical function division, and there may be additional divisions of actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.
The units described as separate components may or may not be physically separate, and components displayed as units may or may not be physical units, may be located in one place, may be distributed on a plurality of network units, and may select some or all of the units according to actual needs to achieve the purpose of the embodiment.
In addition, each functional unit in each embodiment of the present invention may be integrated in one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of hardware plus a form of software functional unit.
It will be appreciated by those of ordinary skill in the art that implementing all or part of the steps of the above method embodiments may be implemented by hardware associated with program instructions, where the above program may be stored in a computer readable storage medium, where the program when executed performs the steps comprising the above method embodiments, where the above storage medium includes various media that may store program code, such as a removable storage device, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic or optical disk, etc.
Or the above-described integrated units of the invention may be stored in a computer-readable storage medium if implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in essence or a part contributing to the prior art in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the embodiments of the present invention. The storage medium includes various media capable of storing program codes such as a removable storage device, a ROM, a RAM, a magnetic disk or an optical disk.
It should be noted that "first," "second," etc. are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.
In addition, the embodiments of the present application may be arbitrarily combined without any collision.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.