CN112055379A - Method and device for measuring interference noise intensity - Google Patents
Method and device for measuring interference noise intensity Download PDFInfo
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- CN112055379A CN112055379A CN201910485717.2A CN201910485717A CN112055379A CN 112055379 A CN112055379 A CN 112055379A CN 201910485717 A CN201910485717 A CN 201910485717A CN 112055379 A CN112055379 A CN 112055379A
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Abstract
The present invention relates to the field of communications, and in particular, to a method and an apparatus for measuring interference noise intensity. The method is used for effectively improving the measurement precision of the interference noise intensity and ensuring the transmission efficiency of the system, and comprises the following steps: and the eNodeB carries out activation detection on the PUCCH signal to obtain a detection result, and when the code channel associated with the first code channel index is determined to be used for receiving the PUCCH signal, a preset code channel matrix is updated based on the first code channel index, so that the first interference noise intensity of part of code channels is screened out, and the interference noise intensity of the PUCCH is obtained through calculation. Therefore, the eNodeB can measure by using the detection result, the operation overhead of the system is reduced, the resource utilization rate is improved, the estimation precision is effectively improved, the probability of wrong decision is reduced, the efficient analysis of the PUCCH is ensured, the invalid downlink retransmission is avoided, the demodulation performance and the closed-loop power control precision of the PUCCH are further improved, and the system performance is improved.
Description
Technical Field
The present invention relates to the field of communications, and in particular, to a method and an apparatus for measuring interference noise intensity.
Background
The interference noise level in a communication system refers to all non-useful signals entering the channel or communication system. The non-useful signals include signals external to the communication system, such as environmental noise and spurious interference, and signals internal to the communication system, such as intersymbol interference and adjacent cell interference. These non-useful signals enter the channel of the receiving device by direct coupling or indirect coupling, which affects the electromagnetic energy of the communication system, and further affects the received signals of the communication system, resulting in performance degradation, quality degradation, information errors or loss of the communication system, and even blocking normal communication. Moreover, based on the detected interference noise intensity, the techniques of scheduling, power control, adaptive coding modulation and the like of a Long Term Evolution (LTE) base station can be realized, and therefore, the measurement of the interference noise intensity is an important link in the receiving technology of the communication system.
In the communication system, the most critical technology of the receiver is to reduce the degradation effect of the wireless channel, noise and interference on the signal and restore the degraded received data, in the prior art, most LTE base stations (enodebs) complete the restoration process of the received data through channel estimation and equalization, and at the same time, separate the signal item and the interference noise item in the channel estimation process and respectively detect the signal strength and the interference noise strength.
However, in a multi-user Channel propagation environment with rich multipath reflection, an idle code Channel not carrying Acknowledgement (ACK)/Non-Acknowledgement (NACK) feedback is very easy to introduce multipath components of adjacent code Channel signals, which results in an imaginary high measured value of interference noise strength, so that error decisions occur in ACK/NACK/Discontinuous Transmission (DTX) analysis and closed-loop power Control of a Physical Uplink Control Channel (PUCCH), which results in invalid downlink retransmission and reduces system Transmission efficiency.
Therefore, it is necessary to design a method for measuring the interference noise intensity to solve the above problems.
Disclosure of Invention
The invention aims to provide a method and a device for measuring interference noise intensity, so as to effectively improve the measurement precision of the interference noise intensity and improve the transmission efficiency of a system.
A method for measuring interference noise strength, comprising:
performing activation detection on the basis of a PUCCH signal sent by a client through a Physical Uplink Control Channel (PUCCH) to obtain a detection result, wherein the detection result comprises a first interference noise intensity set of each code channel corresponding to the PUCCH;
calculating a first code channel index based on an orthogonal code word index and a cyclic shift index currently set by a system;
updating a preset code channel matrix based on the first code channel index when the code channel associated with the first code channel index is determined to be used for receiving the PUCCH signal sent by the user;
and screening out first interference noise intensity of partial code channels from the first interference noise intensity set according to the updated code channel matrix, and calculating the interference noise intensity of the PUCCH based on the obtained first interference noise intensity of the partial code channels.
Optionally, determining that the code channel associated with the first code channel index is used for receiving the PUCCH signal sent by the user specifically includes:
determining a code channel corresponding to the first code channel index for receiving the PUCCH signal sent by a user; alternatively, the first and second electrodes may be,
determining that a code channel corresponding to the first code channel index is not used for receiving the PUCCH signal sent by a user, and code channels corresponding to other code channel indexes adjacent to the first code channel index are used for receiving the PUCCH signal sent by the user.
Optionally, updating a preset code channel matrix based on the first code channel index specifically includes:
and setting an element corresponding to the first code channel index in the preset code channel matrix as 0 based on the first code channel index to obtain an updated code channel matrix.
Optionally, after updating the preset code channel matrix based on the first code channel index, before screening out the first interference noise strength of the partial code channels from the first interference noise strength set according to the updated code channel matrix, further includes:
determining that a current cyclic shift index is equal to a first preset value and a current orthogonal code word index is equal to a second preset value, and further determining that the number of elements 1 in the updated code track matrix is greater than a third preset value, wherein the first preset value is the maximum value of the cyclic shift index set by a system, the second preset value is the maximum value of the orthogonal code word index set by the system, and the third preset value is a fixed value of the number of elements set by the system.
Optionally, screening out the first interference noise strength of a part of code channels from the first interference noise strength set according to the updated code channel matrix, specifically including:
determining each code channel corresponding to an element 1 in the updated code channel matrix according to the updated code channel matrix;
and determining each first interference noise intensity corresponding to each code channel, and screening each first interference noise intensity from the first interference noise intensity set.
Optionally, further comprising:
when the number of the elements 1 in the updated code channel matrix is determined to be not more than a third preset value, traversing each first interference noise intensity corresponding to all code channels in the updated code channel matrix, and sequencing the first interference noise intensities according to the value, thereby obtaining a sequencing result;
and selecting the minimum set number of first interference noise intensities according to the sorting result, determining each code channel corresponding to the set number of first interference noise intensities, and setting the element of each code channel in the updated code channel matrix as 1, wherein one first interference noise emphasis corresponds to one code channel.
Optionally, calculating the interference noise strength of the PUCCH based on the obtained first interference noise strength of the partial code channel includes:
and calculating a first average value of the first interference noise strength of the partial code channels based on the extracted first interference noise strength of the partial code channels, and taking the first average value as the interference noise strength of the PUCCH.
Optionally, further comprising:
and calculating a second average value of the first interference noise intensity of each code channel based on the extracted set number of code channels, and taking the second average value as the interference noise intensity of the PUCCH.
An interference noise strength measuring device, optionally comprising:
the detection unit is used for carrying out activation detection on the basis of a PUCCH signal sent by a client through a Physical Uplink Control Channel (PUCCH) to obtain a detection result, wherein the detection result comprises a first interference noise intensity set of each code channel corresponding to the PUCCH;
the calculation unit is used for calculating a first code channel index based on the orthogonal code word index and the cyclic shift index currently set by the system;
an updating unit, configured to update a preset code channel matrix based on the first code channel index when determining that the code channel associated with the first code channel index is used for receiving the PUCCH signal sent by the user;
and the processing unit is used for screening out the first interference noise strength of part of code channels from the first interference noise strength set according to the updated code channel matrix, and calculating the interference noise strength of the PUCCH based on the obtained first interference noise strength of the part of code channels.
Optionally, it is determined that a code channel associated with the first code channel index is used to receive the PUCCH signal sent by the user, and the updating unit is specifically configured to:
determining a code channel corresponding to the first code channel index for receiving the PUCCH signal sent by a user; alternatively, the first and second electrodes may be,
determining that a code channel corresponding to the first code channel index is not used for receiving the PUCCH signal sent by a user, and code channels corresponding to other code channel indexes adjacent to the first code channel index are used for receiving the PUCCH signal sent by the user.
Optionally, a preset code channel matrix is updated based on the first code channel index, and the updating unit is specifically configured to:
and setting an element corresponding to the first code channel index in the preset code channel matrix as 0 based on the first code channel index to obtain an updated code channel matrix.
Optionally, after updating the preset code channel matrix based on the first code channel index, before screening out the first interference noise strength of the partial code channels from the first interference noise strength set according to the updated code channel matrix, the processing unit is further configured to:
determining that a current cyclic shift index is equal to a first preset value and a current orthogonal code word index is equal to a second preset value, and further determining that the number of elements 1 in the updated code track matrix is greater than a third preset value, wherein the first preset value is the maximum value of the cyclic shift index set by a system, the second preset value is the maximum value of the orthogonal code word index set by the system, and the third preset value is a fixed value of the number of elements set by the system.
Optionally, the processing unit is specifically configured to screen out a first interference noise strength of a part of code channels from the first interference noise strength set according to the updated code channel matrix, and the processing unit is configured to:
determining each code channel corresponding to an element 1 in the updated code channel matrix according to the updated code channel matrix;
and determining each first interference noise intensity corresponding to each code channel, and screening each first interference noise intensity from the first interference noise intensity set.
Optionally, the processing unit is further configured to:
when the number of the elements 1 in the updated code channel matrix is determined to be not more than a third preset value, traversing each first interference noise intensity corresponding to all code channels in the updated code channel matrix, and sequencing the first interference noise intensities according to the value, thereby obtaining a sequencing result;
and selecting the minimum set number of first interference noise intensities according to the sorting result, determining each code channel corresponding to the set number of first interference noise intensities, and setting the element of each code channel in the updated code channel matrix as 1, wherein one first interference noise emphasis corresponds to one code channel.
Optionally, the interference noise strength of the PUCCH is calculated based on the obtained first interference noise strength of the partial code channel, and the processing unit is specifically configured to:
and calculating a first average value of the first interference noise strength of the partial code channels based on the extracted first interference noise strength of the partial code channels, and taking the first average value as the interference noise strength of the PUCCH.
Optionally, the processing unit is further configured to:
and calculating a second average value of the first interference noise intensity of each code channel based on the extracted set number of code channels, and taking the second average value as the interference noise intensity of the PUCCH.
A storage medium, optionally storing a program for implementing a method for measuring interference noise strength, which program, when executed by a processor, performs the steps of:
performing activation detection on the basis of a PUCCH signal sent by a client through a Physical Uplink Control Channel (PUCCH) to obtain a detection result, wherein the detection result comprises a first interference noise intensity set of each code channel corresponding to the PUCCH;
calculating a first code channel index based on an orthogonal code word index and a cyclic shift index currently set by a system;
updating a preset code channel matrix based on the first code channel index when the code channel associated with the first code channel index is determined to be used for receiving the PUCCH signal sent by the user;
and screening out first interference noise intensity of partial code channels from the first interference noise intensity set according to the updated code channel matrix, and calculating the interference noise intensity of the PUCCH based on the obtained first interference noise intensity of the partial code channels.
A communications apparatus, optionally, comprising one or more processors; and one or more computer-readable media having instructions stored thereon, which when executed by the one or more processors, cause the apparatus to perform the method of any of the above.
In summary, in the embodiment of the present invention, the eNodeB performs activation detection on the PUCCH signal to obtain a detection result, and updates the preset code channel matrix based on the first code channel index when it is determined that the code channel associated with the first code channel index is used for receiving the PUCCH signal, so as to screen out the first interference noise strength of a part of code channels, and calculate the interference noise strength of the PUCCH. Therefore, the eNodeB can measure by using the detection result, the operation overhead of the system is reduced, the resource utilization rate is improved, the estimation precision is effectively improved, the probability of wrong decision is reduced, the efficient analysis of the PUCCH is ensured, the invalid downlink retransmission is avoided, the demodulation performance and the closed-loop power control precision of the PUCCH are further improved, and the system performance is improved.
Drawings
FIG. 1 is a schematic diagram illustrating a flow of interference noise measurement according to an embodiment of the present invention;
FIG. 2 is a detailed flowchart illustrating the interference noise strength measurement according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an eNodeB functional structure according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the embodiment of the present invention, referring to fig. 1, a flow chart for measuring the interference noise strength is as follows:
step 100: the eNodeB carries out activation detection on the basis of PUCCH signals sent by a client through a PUCCH to obtain a detection result, wherein the detection result comprises a first interference noise intensity set of each code channel corresponding to the PUCCH.
Specifically, in the embodiment of the present invention, after the client sends the PUCCH signal to the eNodeB through the PUCCH, the eNodeB may perform front-end processing on the received PUCCH signal, and then perform activation detection to obtain a corresponding detection result, where, when performing activation detection on the PUCCH signal, the eNodeB takes an idle code channel not carrying ACK/NACK feedback from among 3 × 12 code channels, and the detection result includes a first interference noise intensity set of each code channel corresponding to the PUCCH.
Step 110: the eNodeB calculates a first code channel index based on the orthogonal code word index and the cyclic shift index currently set by the system.
Specifically, in the embodiment of the present invention, after completing the activation detection, the eNodeB needs to perform initialization setting on system parameters, set the orthogonal codeword Index occndex to 0, set the cyclic shift Index NcsIndex to 0, and set all elements in the track matrix NIFlag to 1, that is, initialize occndex ═ 0, NcsIndex ═ 0, and NIFlag ═ ones ═ (1, 36), and then calculate the first track Index based on occndex and NcsIndex currently set by the system, where Index ═ 3 × occndex + NcsIndex, and in the calculation process, the value of Index changes with the change of occndex and NcsIndex.
Step 120: and when the eNodeB determines that the code channel associated with the first code channel index is used for receiving the PUCCH signal sent by the user, updating a preset code channel matrix based on the first code channel index.
Specifically, in this embodiment of the present invention, after calculating a first code channel Index according to an orthogonal code word Index and a cyclic shift Index currently set by a system, when an eNodeB determines that a code channel corresponding to the first code channel Index is used for receiving the PUCCH signal sent by a user, or when a code channel corresponding to the first code channel Index is not used for receiving the PUCCH signal sent by a user, and a code channel corresponding to another code channel Index adjacent to the first code channel Index is used for receiving the PUCCH signal sent by a user, that is, when a code channel corresponding to Index is not used for receiving the PUCCH signal sent by a user, and a code channel corresponding to Index-1 or Index +1 is used for receiving the PUCCH signal sent by a user, an element corresponding to Index in NIFlag is set to zero, that is, NIFlag ═ 1, Index ═ 0.
Step 130: and the eNodeB screens out the first interference noise strength of part of code channels from the first interference noise strength set according to the updated code channel matrix, and calculates the interference noise strength of the PUCCH based on the obtained first interference noise strength of the part of code channels.
Specifically, in the embodiment of the present invention, after the eNodeB updates the preset NIFlag based on the Index, when it is determined that the current cyclic shift Index is equal to the first preset value and the current orthogonal codeword Index is equal to the second preset value, it further determines whether the number of elements in the updated code channel matrix is greater than a third preset value, where the third preset value is equal to 5, and when it is determined that the number of elements in the updated code channel matrix is greater than 5, the eNodeB screens out the first interference noise strength of a part of code channels from the first interference noise strength set based on the updated code channel matrix, that is, when the eNodeB determines that the number of elements in the current NIFlag is greater than or equal to 6, screens out the first interference noise strength of a code channel whose element in the NIFlag is 1 from the first interference noise strength set based on the updated NIFlag matrix, and averages the first interference noise strengths of the screened out part of code channels, and the calculated average value is used as the interference noise intensity of the PUCCH.
In the embodiment of the present invention, referring to fig. 2, a detailed flowchart of the eNodeB for measuring the interference noise strength is as follows:
step 200: and the eNodeB receives the PUCCH signals sent by the client and performs front-end processing on the PUCCH signals.
Specifically, in the embodiment of the present invention, when a PUCCH signal sent by a user through a client reaches an eNodeB antenna air interface through a wireless channel, an eNodeB may perform front-end processing on the received PUCCH signal, that is, an eNodeB receiver first performs operations of removing 1/2 carrier Frequency offset and removing Cyclic Prefix (CP), performs Fast Fourier Transform (FFT) conversion on an Orthogonal Frequency Division Multiplexing (OFDM) symbol, and extracts a PUCCH useful signal according to PUCCH time-Frequency position resolution resource mapping. Then, channel estimation is performed on the pilot symbols in the PUCCH useful signal, that is, complex conjugate multiplication operation is performed on the pilot symbols and the local pilot sequence, so as to obtain a channel response estimation value. Then, Inverse Discrete Fourier Transform (IDFT) is performed to perform orthogonal code division walsh (walsh) decoding.
Step 201: the eNodeB carries out activation detection on the basis of PUCCH signals sent by a client through a PUCCH to obtain a detection result, wherein the detection result comprises a first interference noise intensity set of each code channel corresponding to the PUCCH.
Specifically, in the embodiment of the present invention, the eNodeB receives a PUCCH signal sent by a user through a client, and after front-end processing is completed, activation detection may be performed based on the PUCCH signal sent by the client through the PUCCH, so as to obtain a corresponding detection result, where when the PUCCH signal is activated, the eNodeB takes an idle code channel not carrying ACK/NACK feedback from among 3 × 12 code channels, and the detection result includes a first interference noise intensity set of each code channel corresponding to the PUCCH.
Step 202: the eNodeB carries out initialization setting on the system parameters.
Specifically, in the embodiment of the present invention, after the eNodeB completes front-end processing and activation detection of the PUCCH signal, the eNodeB may complete initialization setting of each parameter by setting occndex to 0, NcsIndex to 0, and setting all elements of NIFlag to 1, based on the parameter set by the system, that is, initializing occndex to 0, NcsIndex to 0, and NIFlag to ones (1, 36).
Step 203: the eNodeB calculates a first code channel index based on the orthogonal code word index and the cyclic shift index currently set by the system.
Specifically, in the embodiment of the present invention, after initializing the occndex and the NcsIndex, the eNodeB calculates the first track Index based on the currently set occndex and NcsIndex, that is, the first track Index is 3 × occndex + NcsIndex, where the value of Index changes with the change of the values of occndex and NcsIndex in each calculation, and the values of occndex and NcsIndex in subsequent flows change, so the values of Index also change, and the values at each calculation are different.
Step 204: the eNodeB determines whether the code channel corresponding to the first code channel index is used to receive a PUCCH signal sent by a user, if so, execute step 206, otherwise, execute step 205.
Specifically, in the embodiment of the present invention, after the eNodeB calculates the Index based on the currently set occndex and NcsIndex, it further determines whether a code channel corresponding to the Index is used for receiving the PUCCH signal sent by the user, if the code channel corresponding to the Index is used for receiving the PUCCH signal sent by the user, step 206 is executed, and if the code channel corresponding to the Index is not used for receiving the PUCCH signal sent by the user, step 205 is executed.
Step 205: the eNodeB determines whether a code channel corresponding to another code channel index adjacent to the first code channel index is used for receiving the PUCCH signal sent by the user, if so, execute step 206, otherwise, execute step 207.
Specifically, in this embodiment of the present invention, when the eNodeB determines that the code channel corresponding to the first code channel Index is not used to receive the PUCCH signal sent by the user, further, it determines whether code channels corresponding to other code channel indexes adjacent to the first code channel Index are used to receive the PUCCH signal sent by the user, that is, determines whether code channels corresponding to Index-1 and Index +1 are used to receive the PUCCH signal sent by the user, if the code channel corresponding to the other code channel indexes adjacent to the first code channel Index is used to receive the PUCCH signal sent by the user, step 206 is executed, and if the code channel corresponding to the other code channel indexes adjacent to the first code channel Index is not used to receive the PUCCH signal sent by the user, step 207 is executed.
Step 206: and when the eNodeB determines that the code channel associated with the first code channel index is used for receiving the PUCCH signal sent by the user, updating a preset code channel matrix based on the first code channel index.
Specifically, in this embodiment of the present invention, when the eNodeB determines that the code channel corresponding to the first code channel Index is used to receive the PUCCH signal transmitted by the user, or when the code channel corresponding to the first code channel Index is not used to receive the PUCCH signal transmitted by the user, and the code channel corresponding to another code channel Index adjacent to the first code channel Index is used to receive the PUCCH signal transmitted by the user, a preset code channel matrix is updated based on the Index, that is, NIFlag ═ 1, Index ═ 0.
Step 207: the eNodeB determines whether the current cyclic shift index is equal to the first preset value, if so, step 208 is executed, otherwise, step 209 is executed.
Specifically, in the embodiment of the present invention, when the eNodeB determines that a code channel corresponding to another code channel index adjacent to the first code channel index is not used for receiving the PUCCH signal sent by the user, the eNodeB further determines whether the current cyclic shift index is equal to a first preset value, where the first preset value is equal to 11, that is, determines whether the current cyclic shift index is equal to 11, if the current cyclic shift index is equal to 11, execute step 208, and if the current cyclic shift index is not equal to 11, execute step 209.
Step 208: the eNodeB determines whether the current orthogonal codeword index is equal to a second preset value, if so, step 211 is executed, otherwise, step 210 is executed.
Specifically, in the embodiment of the present invention, when the eNodeB determines that the current cyclic shift index is equal to 11, further determine whether the current orthogonal codeword index is equal to a second preset value, where the second preset value is equal to 2, that is, determine whether the current orthogonal codeword index is equal to 2, if the current orthogonal codeword index is equal to 2, execute step 211, and if the current orthogonal codeword index is not equal to 2, execute step 210.
Step 209: the eNodeB increments the cyclic shift index by 1.
Specifically, in the embodiment of the present invention, when the eNodeB determines that the current cyclic shift index is not equal to 11, the eNodeB increments the cyclic shift index by 1, that is, NcsIndex is NcsIndex0+1, wherein, NcsIndex0Denotes the initial value of NcsIndex.
Step 210: the eNodeB increments the orthogonal codeword index by 1 and initializes the cyclic shift index.
Specifically, in this embodiment of the present invention, when the eNodeB determines that the current orthogonal codeword index is not equal to 2, the eNodeB adds 1 to the orthogonal codeword index, that is, occndex is occndex0+1, wherein, OccIndex0Indicates the initial value of occndex, and at the same time, initializes the cyclic shift index, i.e., sets NcsIndex to 0.
Step 211: the eNodeB determines whether the number of element 1 in the updated code channel matrix is greater than a third preset value, if so, step 213 is executed, otherwise, step 212 is executed.
Specifically, in this embodiment of the present invention, the eNodeB determines that the current cyclic shift index is equal to 11, and when the current orthogonal codeword index is equal to 2, further determines whether the number of element 1 in the updated code channel matrix is greater than a third preset value, where the third preset value is equal to 5, that is, whether the number of element 1 in the updated code channel matrix is greater than 5, if the number of element 1 in the updated code channel matrix is not greater than 5, that is, less than or equal to 5, step 213 is executed, and if the number of element 1 in the updated code channel matrix is greater than 5, that is, greater than or equal to 6, step 212 is executed.
Step 212: and the eNodeB screens out a set number of first interference noise intensities from the first interference noise intensity set according to the updated code channel matrix, and sets corresponding elements in the code channel matrix as 1.
Specifically, in the embodiment of the present invention, the set number is equal to 5, the eNodeB determines that the number of element 1 in the current NIFlag is not greater than 5, that is, less than or equal to 5, traverses the first interference noise strengths corresponding to 36 code channels in the NIFlag, sorts the first interference noise strengths in order from small to large, selects the smallest 5 first interference noise strengths from the first interference noise strength set, and sets the element of the 5 code channels corresponding to the 5 first interference noise strengths in the NIFlag to 1.
Step 213: and the eNodeB screens out the first interference noise strength of part of code channels from the first interference noise strength set according to the updated code channel matrix, and calculates the interference noise strength of the PUCCH based on the obtained first interference noise strength of the part of code channels.
Specifically, in the embodiment of the present invention, when the eNodeB determines that the number of element 1 in the updated code channel matrix is greater than 5, the eNodeB may screen the first interference noise strength of a part of code channels from the first interference noise strength set based on the updated code channel matrix, that is, when the eNodeB determines that the number of element 1 in the current NIFlag is greater than 5, that is, greater than or equal to 6, the eNodeB screens the first interference noise strength of the code channel corresponding to the element 1 in the NIFlag from the first interference noise strength set based on the updated code channel matrix, and averages all the first interference noise strengths on the code channels corresponding to the element 1 in the NIFlag, and further, the obtained average is the interference noise strength of the PUCCH.
Therefore, the eNodeB finishes executing the measuring process aiming at the interference noise intensity, based on the measured interference noise intensity of the PUCCH, the eNodeB can activate and detect the PUCCH signal again, DTX judgment is realized, secondary estimation on the interference noise intensity is completed, then, the condition of wrong judgment is avoided, the demodulation performance of the PUCCH channel and the closed-loop power control precision are improved, the measuring precision of the interference noise intensity is improved, and the system transmission efficiency is improved.
In the embodiment of the present invention, referring to fig. 3, an eNodeB at least includes: a detection unit 101, a calculation unit 102, an update unit 103 and a processing unit 104, wherein,
a detecting unit 101, configured to perform activation detection on a PUCCH signal sent by a client through a physical uplink control channel PUCCH, to obtain a detection result, where the detection result includes a first interference noise intensity set of each code channel corresponding to the PUCCH;
a calculating unit 102, configured to calculate a first code channel index based on an orthogonal code word index and a cyclic shift index currently set by the system;
an updating unit 103, configured to update a preset code channel matrix based on the first code channel index when determining that the code channel associated with the first code channel index is used for receiving the PUCCH signal sent by the user;
and the processing unit 104 is configured to screen out first interference noise strengths of a part of code channels from the first interference noise strength set according to the updated code channel matrix, and calculate, based on the obtained first interference noise strengths of the part of code channels, the interference noise strength of the PUCCH.
Optionally, it is determined that a code channel associated with the first code channel index is used to receive the PUCCH signal sent by the user, and the updating unit 103 is specifically configured to:
determining a code channel corresponding to the first code channel index for receiving the PUCCH signal sent by a user; alternatively, the first and second electrodes may be,
determining that a code channel corresponding to the first code channel index is not used for receiving the PUCCH signal sent by a user, and code channels corresponding to other code channel indexes adjacent to the first code channel index are used for receiving the PUCCH signal sent by the user.
Optionally, a preset code channel matrix is updated based on the first code channel index, and the updating unit 103 is specifically configured to:
and setting an element corresponding to the first code channel index in the preset code channel matrix as 0 based on the first code channel index to obtain an updated code channel matrix.
Optionally, after updating the preset code channel matrix based on the first code channel index, before screening out the first interference noise strength of the partial code channels from the first interference noise strength set according to the updated code channel matrix, the processing unit 104 is further configured to:
determining that a current cyclic shift index is equal to a first preset value and a current orthogonal code word index is equal to a second preset value, and further determining that the number of elements 1 in the updated code track matrix is greater than a third preset value, wherein the first preset value is the maximum value of the cyclic shift index set by a system, the second preset value is the maximum value of the orthogonal code word index set by the system, and the third preset value is a fixed value of the number of elements set by the system.
Optionally, the processing unit 104 is specifically configured to screen out a first interference noise strength of a part of code channels from the first interference noise strength set according to the updated code channel matrix, where:
determining each code channel corresponding to an element 1 in the updated code channel matrix according to the updated code channel matrix;
and determining each first interference noise intensity corresponding to each code channel, and screening each first interference noise intensity from the first interference noise intensity set.
Optionally, the processing unit 104 is further configured to:
when the number of the elements 1 in the updated code channel matrix is determined to be not more than a third preset value, traversing each first interference noise intensity corresponding to all code channels in the updated code channel matrix, and sequencing the first interference noise intensities according to the value, thereby obtaining a sequencing result;
and selecting the minimum set number of first interference noise intensities according to the sorting result, determining each code channel corresponding to the set number of first interference noise intensities, and setting the element of each code channel in the updated code channel matrix as 1, wherein one first interference noise emphasis corresponds to one code channel.
Optionally, the interference noise strength of the PUCCH is calculated based on the obtained first interference noise strength of the partial code channel, and the processing unit 104 is specifically configured to:
and calculating a first average value of the first interference noise strength of the partial code channels based on the extracted first interference noise strength of the partial code channels, and taking the first average value as the interference noise strength of the PUCCH.
Optionally, the processing unit 104 is further configured to:
and calculating a second average value of the first interference noise intensity of each code channel based on the extracted set number of code channels, and taking the second average value as the interference noise intensity of the PUCCH.
Based on the same inventive concept, an embodiment of the present invention provides a storage medium storing a program for implementing a method of measuring an interference noise intensity, the program, when executed by a processor, performing the steps of:
performing activation detection on the basis of a PUCCH signal sent by a client through a Physical Uplink Control Channel (PUCCH) to obtain a detection result, wherein the detection result comprises a first interference noise intensity set of each code channel corresponding to the PUCCH;
calculating a first code channel index based on an orthogonal code word index and a cyclic shift index currently set by a system;
updating a preset code channel matrix based on the first code channel index when the code channel associated with the first code channel index is determined to be used for receiving the PUCCH signal sent by the user;
and screening out first interference noise intensity of partial code channels from the first interference noise intensity set according to the updated code channel matrix, and calculating the interference noise intensity of the PUCCH based on the obtained first interference noise intensity of the partial code channels.
Based on the same inventive concept, the embodiment of the invention provides a communication device, which comprises one or more processors; and one or more computer-readable media having instructions stored thereon, which when executed by the one or more processors, cause the apparatus to perform the method of any of the above.
In summary, in the embodiment of the present invention, first, an eNodeB performs activation detection on a PUCCH signal to obtain a detection result, then calculates a first code channel index based on an orthogonal code word index and a cyclic shift index currently set by a system, and updates a preset code channel matrix based on the first code channel index when a code channel associated with the first code channel index is determined to be used for receiving the PUCCH signal sent by a user, so as to screen out a first interference noise intensity of a part of code channels, and calculate an interference noise intensity of the PUCCH. Thus, the eNodeB can utilize the detection result of the activation detection to carry out secondary estimation on the interference noise intensity of the PUCCH signal, reduce the operation overhead of the system, improve the resource utilization rate of the system, simplify the evaluation flow of the algorithm, and when the code channel associated with the first code channel index is determined to be used for receiving the PUCCH signal sent by the user, the interference noise intensity of the PUCCH is obtained by calculation based on the updated code channel matrix, the operating state of each code channel in the code channel matrix can be accurately mastered while the accuracy of the judgment condition is ensured, the code channel matrix is updated in real time according to the first code channel index, the measurement result is evaluated aiming at the current PUCCH, the smooth realization of the subsequent calculation flow is ensured, the estimation precision of the interference noise intensity is effectively improved, the probability of wrong judgment of the interference noise intensity is reduced, the efficient analysis of the PUCCH is ensured, and the invalid downlink retransmission is avoided, the transmission efficiency of the system is improved, the demodulation performance and the closed-loop power control accuracy of the PUCCH are improved, and the system performance is improved.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various modifications and variations can be made in the embodiments of the present invention without departing from the spirit or scope of the embodiments of the invention. Thus, if such modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to encompass such modifications and variations.
Claims (18)
1. A method for measuring interference noise level, comprising:
performing activation detection on the basis of a PUCCH signal sent by a client through a Physical Uplink Control Channel (PUCCH) to obtain a detection result, wherein the detection result comprises a first interference noise intensity set of each code channel corresponding to the PUCCH;
calculating a first code channel index based on an orthogonal code word index and a cyclic shift index currently set by a system;
updating a preset code channel matrix based on the first code channel index when the code channel associated with the first code channel index is determined to be used for receiving the PUCCH signal sent by the user;
and screening out first interference noise intensity of partial code channels from the first interference noise intensity set according to the updated code channel matrix, and calculating the interference noise intensity of the PUCCH based on the obtained first interference noise intensity of the partial code channels.
2. The method of claim 1, wherein determining the code channel associated with the first code channel index for receiving the PUCCH signal transmitted by the user specifically comprises:
determining a code channel corresponding to the first code channel index for receiving the PUCCH signal sent by a user; alternatively, the first and second electrodes may be,
determining that a code channel corresponding to the first code channel index is not used for receiving the PUCCH signal sent by a user, and code channels corresponding to other code channel indexes adjacent to the first code channel index are used for receiving the PUCCH signal sent by the user.
3. The method of claim 1, wherein updating the predetermined code channel matrix based on the first code channel index comprises:
and setting an element corresponding to the first code channel index in the preset code channel matrix as 0 based on the first code channel index to obtain an updated code channel matrix.
4. The method of claim 1 or 3, wherein after updating the preset code channel matrix based on the first code channel index, before screening out the first interference noise strength of the partial code channels from the first interference noise strength set according to the updated code channel matrix, the method further comprises:
determining that a current cyclic shift index is equal to a first preset value and a current orthogonal code word index is equal to a second preset value, and further determining that the number of elements 1 in the updated code track matrix is greater than a third preset value, wherein the first preset value is the maximum value of the cyclic shift index set by a system, the second preset value is the maximum value of the orthogonal code word index set by the system, and the third preset value is a fixed value of the number of elements set by the system.
5. The method of claim 1 or 3, wherein the screening the first interference noise strength of the partial code channels from the first interference noise strength set according to the updated code channel matrix specifically comprises:
determining each code channel corresponding to an element 1 in the updated code channel matrix according to the updated code channel matrix;
and determining each first interference noise intensity corresponding to each code channel, and screening each first interference noise intensity from the first interference noise intensity set.
6. The method of claim 4, further comprising:
when the number of the elements 1 in the updated code channel matrix is determined to be not more than a third preset value, traversing each first interference noise intensity corresponding to all code channels in the updated code channel matrix, and sequencing the first interference noise intensities according to the value, thereby obtaining a sequencing result;
and selecting the minimum set number of first interference noise intensities according to the sorting result, determining each code channel corresponding to the set number of first interference noise intensities, and setting the element of each code channel in the updated code channel matrix as 1, wherein one first interference noise emphasis corresponds to one code channel.
7. The method according to claim 1 or 3, wherein calculating the interference noise strength of the PUCCH based on the obtained first interference noise strength of the partial code channel includes:
and calculating a first average value of the first interference noise strength of the partial code channels based on the extracted first interference noise strength of the partial code channels, and taking the first average value as the interference noise strength of the PUCCH.
8. The method of claim 6, further comprising:
and calculating a second average value of the first interference noise intensity of each code channel based on the extracted set number of code channels, and taking the second average value as the interference noise intensity of the PUCCH.
9. An apparatus for measuring interference noise level, comprising:
the detection unit is used for carrying out activation detection on the basis of a PUCCH signal sent by a client through a Physical Uplink Control Channel (PUCCH) to obtain a detection result, wherein the detection result comprises a first interference noise intensity set of each code channel corresponding to the PUCCH;
the calculation unit is used for calculating a first code channel index based on the orthogonal code word index and the cyclic shift index currently set by the system;
an updating unit, configured to update a preset code channel matrix based on the first code channel index when determining that the code channel associated with the first code channel index is used for receiving the PUCCH signal sent by the user;
and the processing unit is used for screening out the first interference noise strength of part of code channels from the first interference noise strength set according to the updated code channel matrix, and calculating the interference noise strength of the PUCCH based on the obtained first interference noise strength of the part of code channels.
10. The apparatus of claim 9, wherein a code channel associated with the first code channel index is determined to be used for receiving the PUCCH signal transmitted by a user, and wherein the updating unit is specifically configured to:
determining a code channel corresponding to the first code channel index for receiving the PUCCH signal sent by a user; alternatively, the first and second electrodes may be,
determining that a code channel corresponding to the first code channel index is not used for receiving the PUCCH signal sent by a user, and code channels corresponding to other code channel indexes adjacent to the first code channel index are used for receiving the PUCCH signal sent by the user.
11. The apparatus of claim 9, wherein a preset code channel matrix is updated based on the first code channel index, and the updating unit is specifically configured to:
and setting an element corresponding to the first code channel index in the preset code channel matrix as 0 based on the first code channel index to obtain an updated code channel matrix.
12. The apparatus of claim 9 or 11, wherein after updating the preset code channel matrix based on the first code channel index, before screening out the first interference noise strength of the partial code channels from the first interference noise strength set according to the updated code channel matrix, the processing unit is further configured to:
determining that a current cyclic shift index is equal to a first preset value and a current orthogonal code word index is equal to a second preset value, and further determining that the number of elements 1 in the updated code track matrix is greater than a third preset value, wherein the first preset value is the maximum value of the cyclic shift index set by a system, the second preset value is the maximum value of the orthogonal code word index set by the system, and the third preset value is a fixed value of the number of elements set by the system.
13. The apparatus according to claim 9 or 11, wherein the first interference noise strength of a part of code channels is filtered out from the first interference noise strength set according to the updated code channel matrix, and the processing unit is specifically configured to:
determining each code channel corresponding to an element 1 in the updated code channel matrix according to the updated code channel matrix;
and determining each first interference noise intensity corresponding to each code channel, and screening each first interference noise intensity from the first interference noise intensity set.
14. The apparatus as recited in claim 12, said processing unit to further:
when the number of the elements 1 in the updated code channel matrix is determined to be not more than a third preset value, traversing each first interference noise intensity corresponding to all code channels in the updated code channel matrix, and sequencing the first interference noise intensities according to the value, thereby obtaining a sequencing result;
and selecting the minimum set number of first interference noise intensities according to the sorting result, determining each code channel corresponding to the set number of first interference noise intensities, and setting the element of each code channel in the updated code channel matrix as 1, wherein one first interference noise emphasis corresponds to one code channel.
15. The apparatus according to claim 9 or 11, wherein the interference noise strength of the PUCCH is calculated based on the obtained first interference noise strength of the partial code channel, and the processing unit is specifically configured to:
and calculating a first average value of the first interference noise strength of the partial code channels based on the extracted first interference noise strength of the partial code channels, and taking the first average value as the interference noise strength of the PUCCH.
16. The apparatus as recited in claim 14, said processing unit to further:
and calculating a second average value of the first interference noise intensity of each code channel based on the extracted set number of code channels, and taking the second average value as the interference noise intensity of the PUCCH.
17. A storage medium storing a program for implementing a method for measuring interference noise level, the program, when executed by a processor, performing the steps of:
performing activation detection on the basis of a PUCCH signal sent by a client through a Physical Uplink Control Channel (PUCCH) to obtain a detection result, wherein the detection result comprises a first interference noise intensity set of each code channel corresponding to the PUCCH;
calculating a first code channel index based on an orthogonal code word index and a cyclic shift index currently set by a system;
updating a preset code channel matrix based on the first code channel index when the code channel associated with the first code channel index is determined to be used for receiving the PUCCH signal sent by the user;
and screening out first interference noise intensity of partial code channels from the first interference noise intensity set according to the updated code channel matrix, and calculating the interference noise intensity of the PUCCH based on the obtained first interference noise intensity of the partial code channels.
18. A communications apparatus comprising one or more processors; and one or more computer-readable media having instructions stored thereon, which when executed by the one or more processors, cause the apparatus to perform the method of any of claims 1-8.
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