CN114258060B - DTX detection method, DTX detection device and processor readable storage medium - Google Patents

DTX detection method, DTX detection device and processor readable storage medium Download PDF

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Publication number
CN114258060B
CN114258060B CN202011017175.5A CN202011017175A CN114258060B CN 114258060 B CN114258060 B CN 114258060B CN 202011017175 A CN202011017175 A CN 202011017175A CN 114258060 B CN114258060 B CN 114258060B
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dtx
dtx detection
value
information sequence
determining
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CN114258060A (en
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吴凤娟
郑未
李丹妮
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
    • H04L1/0039—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver other detection of signalling, e.g. detection of TFCI explicit signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The DTX detection method, the device and the processor readable storage medium provided by the application utilize the characteristic that the distribution of the signal and the noise on the DTX detection value is different, judge whether the terminal sending the information sequence is in a DTX state or not according to the distribution of the DTX detection value of each decoding path in the decoding processing process of the information sequence by a decoder so as to realize the DTX detection of the terminal, and determine the subsequent transmission strategy according to the DTX state of the terminal, thereby avoiding the problem of invalid retransmission of the signal of the PUSCH or the PUCCHDD, ensuring the signal transmission efficiency and avoiding the waste of transmission resources.

Description

DTX detection method, DTX detection device and processor readable storage medium
Technical Field
The present application relates to the field of wireless communications technologies, and in particular, to a method and apparatus for DTX detection, and a processor readable storage medium.
Background
In a 5GNR system for wireless communication, a downlink control channel (Physical Downlink Control Channel, PDCCH for short) generally employs a blind detection algorithm to perform discontinuous transmission detection on information.
In the prior art, there is a certain probability of missing detection in the blind detection algorithm, and once missing detection occurs, an uplink physical shared channel (Physical Uplink Shared Channel, abbreviated as PUSCH) in the uplink, or a physical uplink control channel (Physical Uplink Control Channel, abbreviated as PUCCH) will not send a signal to the base station, and at this time, multiple invalid retransmissions of the signal may occur.
Disclosure of Invention
The application provides a DTX detection method, a DTX detection device and a processor readable storage medium, which are used for realizing DTX detection of a terminal.
In one aspect, the present application provides a DTX detection method, including:
an information sequence to be detected is obtained, and a decoder is called to decode the information sequence to obtain an information estimated value;
determining distribution of DTX detection values of each decoding path in the decoding process according to the information estimation value;
and determining whether the terminal for transmitting the information sequence is in a DTX state according to the distribution of the DTX detection values.
In an alternative embodiment, the determining whether the terminal sending the information sequence is in a DTX state according to the distribution of the DTX detection values includes:
determining the variance of the DTX detection value according to the DTX detection value of each decoding path;
if the variance is smaller than a preset threshold value, determining that the terminal for transmitting the information sequence is in a DTX state;
or if the variance is greater than or equal to a preset threshold value, determining that the terminal for transmitting the information sequence is not in a DTX state.
In an alternative embodiment, the determining the variance of the DTX detection value according to the DTX detection value of each decoding path includes:
calculating the average value of DTX detection values of all decoding paths;
and determining the variance according to the DTX detection value of each decoding path and the average value.
In an alternative embodiment, the decoder is a multipath convolutional decoder, or a multipath polar decoder, and the DTX detection value is a path metric value.
In an alternative embodiment, the decoder is an RM decoder, and the DTX detection value is a correlation value.
In an alternative embodiment, the obtaining the information sequence to be detected, and calling a decoder to decode the information sequence, includes:
receiving an original code sent by a sending end;
and carrying out channel estimation and equalization processing on the original codes to obtain the information sequence to be detected.
In another aspect, the present application provides a DTX detection apparatus comprising a memory, a transceiver, and a processor:
a memory for storing a computer program;
a transceiver for transceiving data under control of the processor;
a processor for reading the computer program in the memory and performing the following operations:
an information sequence to be detected is obtained, and a decoder is called to decode the information sequence to obtain an information estimated value; determining distribution of DTX detection values of each decoding path in the decoding process according to the information estimation value; determining whether a terminal transmitting the information sequence is in a DTX state according to the distribution of the DTX detection values
In an optional embodiment, the processor is configured to execute the determining, according to the distribution of DTX detection values, whether the terminal sending the information sequence is in a DTX state, and specifically includes:
determining the variance of the DTX detection value according to the DTX detection value of each decoding path;
if the variance is smaller than a preset threshold value, determining that the terminal for transmitting the information sequence is in a DTX state;
or if the variance is greater than or equal to a preset threshold value, determining that the terminal for transmitting the information sequence is not in a DTX state.
In an optional embodiment, the processor is configured to perform the determining, according to the DTX detection value of each decoding path, a variance of the DTX detection value, specifically including:
calculating the average value of DTX detection values of all decoding paths;
and determining the variance according to the DTX detection value of each decoding path and the average value.
In an alternative embodiment, the decoder is a multipath convolutional decoder, or a multipath polar decoder, and the DTX detection value is a path metric value.
In an alternative embodiment, the decoder is an RM decoder, and the DTX detection value is a correlation value.
In an optional embodiment, the processor is configured to execute the obtaining the information sequence to be detected, and when invoking a decoder to decode the information sequence, specifically includes:
receiving an original code sent by a sending end;
and carrying out channel estimation and equalization processing on the original codes to obtain the information sequence to be detected.
In still another aspect, the present application provides a DTX detection apparatus, including:
a receiving unit for obtaining an information sequence to be detected;
the decoding unit is used for calling a decoder to decode the information sequence to obtain an information estimation value;
the detection unit is used for determining the distribution of DTX detection values of each decoding path in the decoding process according to the information estimation value; and the method is also used for determining whether the terminal transmitting the information sequence is in a DTX state according to the distribution of the DTX detection values.
In a final aspect, the application provides a processor-readable storage medium storing a computer program for causing the processor to perform the method of any one of the preceding claims.
The DTX detection method, the device and the processor readable storage medium provided by the application utilize the characteristic that the distribution of the signal and the noise on the DTX detection value is different, judge whether the terminal sending the information sequence is in a DTX state or not according to the distribution of the DTX detection value of each decoding path in the decoding processing process of the information sequence by a decoder so as to realize the DTX detection of the terminal, and determine the subsequent transmission strategy according to the DTX state of the terminal, thereby avoiding the problem of invalid retransmission of the signal of the PUSCH or the PUCCHDD, ensuring the signal transmission efficiency and avoiding the waste of transmission resources.
It should be understood that the description of the application above is not intended to limit key or critical features of embodiments of the application, nor to limit the scope of the application. Other features of the present application will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the application or the technical solutions of the prior art, the following description of the embodiments or the drawings used in the description of the prior art will be given in brief, it being obvious that the drawings in the description below are some embodiments of the application and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a network architecture provided by the present application;
fig. 2 is a schematic flow chart of a DTX detection method provided by the present application;
fig. 3 is a schematic flow chart of another DTX detection method provided in the present application;
fig. 4 is a schematic structural diagram of a DTX detection apparatus according to the present application;
fig. 5 is a schematic structural diagram of another DTX detection apparatus according to the present application.
Detailed Description
Exemplary embodiments of the present application will now be described with reference to the accompanying drawings, in which various details of the embodiments of the present application are included to facilitate understanding, and are to be considered merely exemplary. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
The application provides a DTX detection method, a DTX detection device and a processor readable storage medium, which are used for realizing DTX detection of a terminal, and determining a subsequent transmission strategy according to the DTX state of the terminal, so that the problem of invalid retransmission of a signal of a PUSCH or a PUCCHDD is avoided, the signal transmission efficiency is ensured, and the waste of transmission resources is avoided.
The method and the device are based on the same application, and because the principles of solving the problems by the method and the device are similar, the implementation of the device and the method can be referred to each other, and the repetition is not repeated.
It should be noted that the technical solution provided by the embodiment of the present application may be applicable to various systems, especially a 5G system.
For example, suitable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (general packet Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR), and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved Packet System, EPS), 5G system (5 GS) etc. may also be included in the system.
For a clear understanding of the technical solutions of the present application, the prior art solutions will be described in detail first.
Fig. 1 is a network architecture provided in the present application, as shown in fig. 1, where the network architecture includes a terminal (a receiving end mentioned in the present application) and a base station (a transmitting end mentioned in the present application).
The terminal in fig. 1, which is also referred to as a terminal device, may be a device that provides voice and/or data connectivity to a user, a handheld device with wireless connection capability, or other processing device connected to a wireless modem, etc.
The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network.
Such as personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal Digital Assistant, PDAs), and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (access terminal), user terminal device (user terminal), user agent (user agent), user equipment (user device), and embodiments of the present application are not limited in this respect.
And the base station in fig. 1, also referred to as a network device, may comprise a plurality of cells serving the terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be operable to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface.
Specifically, in the 5GNR system for wireless communication as shown in fig. 1, a base station (transmitting end) encodes an information sequence into an original code by means of polarized channel transmission (based on a downlink control channel (Physical Downlink Control Channel, abbreviated PDCCH)) and transmits the original code to a terminal (receiving end).
The terminal will receive these original codes and perform a series of processes including decoding processes to obtain the information sequences therein and return a series of feedback information (via an uplink physical shared channel (Physical Uplink Shared Channel, PUSCH for short) or a physical uplink control channel (Physical Uplink Control Channel, PUCCH for short)) to the base station.
The uplink PUSCH requires an initial signal to be transmitted to ensure efficient transmission of the information sequence, and in this process, the base station typically detects the initial signal using a blind detection algorithm.
However, the base blind detection algorithm has a certain probability of missed detection and false detection, when the missed detection and false detection occur, the uplink PUSCH of the terminal does not actually transmit the initial signal, and the base station still executes the step of normally demodulating the PUSCH.
At this time, the base station will have an error in checking the cyclic redundancy check code (Cyclic Redundancy Check, abbreviated CRC) in the demodulation process, and the terminal will be required to retransmit the PUSCH. In the process of triggering retransmission, if the uplink PUSCH of the terminal does not transmit an initial signal all the time, the terminal is repeatedly required to retransmit the PUSCH until the maximum retransmission times are reached, which seriously affects the uplink throughput.
In order to solve the problems of missed detection and false detection existing in blind detection calculation of a base station, DTX detection based on a terminal is generated, and whether effective signals exist in information transmitted by a PDCCH (physical downlink control channel) of the base station or not is judged by the terminal so as to determine the state of the terminal, and further, a subsequent signal transmission strategy is determined.
The existing DTX detection algorithm based on the terminal mainly comprises two implementation modes:
one is:
after obtaining the PDCCH information sent by the base station, the terminal performs a series of processes including equalization decoding on the PDCCH information. In order to determine the DTX status, the terminal calculates a ratio of signal to noise ratios of the information before and after the equalization process, and compares the ratio with a preset threshold value. If the ratio of the signal to noise ratio is greater than the threshold value, the receiving end can be determined to be in a non-DTX state; if the ratio of the signal to noise ratio is smaller than or equal to the threshold value, the receiving end can be determined to be in a DTX state.
The second step is:
after obtaining the PDCCH information sent by the base station, the terminal performs a series of processes including equalization decoding on the PDCCH information. In order to determine the DTX state, the terminal calculates a maximum correlation value of the RM decoder after the decoding process, and compares the maximum correlation value with a threshold. If the maximum correlation value is greater than the threshold value, the receiving end can be determined to be in a non-DTX state; if the maximum correlation value is less than or equal to the threshold value, it can be determined that the receiving end is in a DTX state.
However, in the two prior arts, there is a possibility that certain misjudgment exists for the information including the signal and the state not including the signal in the PDCCH information:
in the first mode, since the signal-to-noise ratio before and after equalization is compared with the threshold to determine whether the terminal returns an effective signal to the base station, when determining, the decoder gain will affect the accuracy of the signal-to-noise ratio because the information will be decoded by the decoder after equalization, which makes the DTX status determined based on the signal-to-noise ratio less accurate. In the second mode, when the signal strength of the effective signal in the information sent by the base station is weak, the maximum correlation value of the weak signal and the maximum correlation value of the noise signal are very close, and in this way, the information including the weak signal is considered as noise information, so as to cause erroneous judgment of the DTX state.
Once the DTX detection of the terminal is misjudged, the downlink throughput of the base station will also be affected: in the misjudgment state, when the base station fails to send the initial signal of the downlink PDSCH signal, the terminal will not sense the situation due to the misjudgment of DTX, and at this time, the terminal will normally execute the step of demodulating the PDSCH. The problem of CRC check errors will occur in the demodulation process of the terminal, and the base station will be required to retransmit the downlink PDSCH.
If the base station does not transmit the initial signal of the downlink PDSCH all the time, the base station is repeatedly required to retransmit the PDSCH until the maximum retransmission times are reached, and the downlink throughput is affected.
It is expected that multiple negative feedback (Negative Acknowl edgement, NACK for short) due to misinterpretations of DTX detection will lead to multiple re-decoding failures, possibly resulting in modulation and coding strategy (Modulation and Coding Scheme, MCS for short) level and transmit power misadjustment.
Based on this, the present application has been made, and in particular, the inventors found that the signal and noise differ in the distribution of DTX detection values. When a signal is sent, only the individual DTX detection value is larger, the rest DTX detection values are smaller, and the DTX detection values are unevenly distributed; when no signal is transmitted, all DTX detection values are from noise, and the corresponding DTX detection values are relatively uniform in distribution. Therefore, the inventor utilizes the characteristic to invent a novel DTX detection method, which specifically calculates the distribution conditions of average value, variance, covariance, expected value, normal distribution value and the like of DTX detection values of each decoding path in the process of decoding an information sequence according to a decoder, and judges whether a terminal sending the information sequence is in a DTX state or not, thereby realizing the DTX detection of the terminal.
Unlike the two prior arts described above, since there is a large difference in the distribution of DTX detection values between information including a signal and information not including a signal, it will effectively distinguish the components in the information, so that the DTX state obtained in this way can reflect the true state of the terminal. The DTX state is utilized to determine the subsequent transmission strategy, so that the problem of invalid retransmission of signals can be effectively avoided, and the waste of transmission resources is avoided while the signal transmission efficiency is ensured.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
Example 1
Fig. 2 is a schematic flow chart of a DTX detection method provided by the present application, and as shown in fig. 2, an execution body of an embodiment of the present application is a receiving end, which may specifically be the terminal in fig. 1.
The DTX detection method provided in this embodiment includes the following steps.
And 101, obtaining an information sequence to be detected, and calling a decoder to decode the information sequence to obtain an information estimated value.
In the DTX detection method provided by the present application, first, a terminal acquires an information sequence to be detected, and then invokes its own decoder to decode the information sequence to be detected, so as to obtain an information estimation value.
The decoding process is the inverse of the encoding process, and when the transmitting end transmits the information sequence, the information sequence is processed by adopting a processing mode including the encoding process, so that the original code available for transmission is transmitted to the receiving end through a communication path. Correspondingly, the receiving end will perform some column processing after receiving the original code to obtain the information sequence to be detected, and then will perform corresponding decoding processing on the information sequence by using the decoder to obtain the estimated value of the information sequence.
In other words, the above-mentioned method for acquiring the information sequence to be detected may include: the receiving end can receive the original code sent by the sending end, and carries out channel estimation and equalization processing on the original code to obtain the information sequence to be detected.
Step 102, determining distribution of DTX detection values of each decoding path in the decoding process according to the information estimation value.
Step 103, determining whether the terminal transmitting the information sequence is in a DTX state according to the distribution of the DTX detection values.
In particular, since the signal and noise are quite different in the distribution of DTX detection values: when a signal is sent, only the individual DTX detection value is larger, the rest DTX detection values are smaller, and the DTX detection values are unevenly distributed; when no signal is transmitted, all DTX detection values are from noise, and the corresponding DTX detection values are relatively uniform in distribution.
Therefore, with respect to the above characteristics, in step 102 of the present application, the distribution of DTX detection values of each decoding path during the decoding process is determined first according to the information estimation value.
Unlike the two existing DTX detection methods, in the DTX detection method provided by the present application, the DTX detection value is obtained by performing an arithmetic process on the information estimation value after the decoding process. In this way, the DTX detection value of the signal obtains almost all the processing gains of the receiving end, and a large distinction can be made from the noise DTX detection value.
Subsequently, it will be determined in step 103 whether the terminal transmitting the information sequence is in a DTX state or not, using a distribution according to the DTX detection values.
Wherein, for noise, the DTX detection value of each decoding path is equivalent; for a signal, the distribution of DTX detection values across different decoding paths is different, since there is an optimal decoding path. Whether the information sequence describes noise or a signal can be efficiently determined by the distribution of the DTX detection values.
When the information sequence describes a signal, the terminal will be in a DTX state, i.e. a discontinuous transmission state. In this state, the base station at the transmitting end will transmit new data when receiving the uplink control signal transmitted by the terminal at the receiving end, otherwise, the base station will retransmit the data transmitted last time.
In addition, it should be noted that in the embodiment of the present application, the difference of decoder types will cause the difference of DTX detection values. For example, if the decoder is a multipath convolutional decoder, or a multipath polar decoder, the DTX detection value is a path metric value; if the decoder is an RM decoder, the DTX detection value is a correlation value.
The path metric value and the related value can be obtained by adopting the existing mode, and the application does not limit the acquisition mode.
In order to further describe the embodiments of the present application, on the basis of the above embodiments, a description will be given below of a DTX detection method provided by the present application, taking Polar decoding as an example of a decoder of a terminal.
Fig. 3 is a schematic flow chart of another DTX detection method provided by the present application, and as shown in fig. 3, an execution body of an embodiment of the present application is a receiving end, which may specifically be the terminal in fig. 1.
As shown in fig. 3, the method includes:
step 201, obtaining an information sequence to be detected, and calling a decoder to decode the information sequence to obtain an information estimation value;
step 202, determining the distribution of path metric values of each decoding path in the decoding process according to the information estimation value;
step 203, determining the variance of the path metric according to the path metric of each decoding path;
step 204, judging whether the variance of the path metric value is smaller than a preset threshold value;
if yes, determining that the terminal for transmitting the information sequence is in a DTX state; if not, determining that the terminal for transmitting the information sequence is not in a DTX state.
Unlike the foregoing embodiments, the decoder invoked in this embodiment is a multipath polar decoder, and the corresponding DTX detection value is a path metric value.
Firstly, a transmitting end transmits an information sequence u through a polarized channel to obtain a codeword x, the codeword x is transmitted to a receiving end through the transmission channel, the receiving end receives an original code y, and then channel estimation, equalization and decoding are sequentially carried out on the original code y to obtain an estimated value of the information sequence u
At the time of the decoding process, an SCL decoding algorithm may be employed. Specifically, the SCL decoding algorithm is a basic algorithm of Polar codes, and can be used for simultaneously performing decoding search on L paths where an information sequence exists. For any path L, this L e {1,2, …, L } and any transmit bit u i The u is i E {1,2, …, N }, the corresponding path metric values are obtained as follows:
the method comprises the steps of,
wherein,,a path metric value in the first path for the ith transmission bit; />Is a likelihood ratio; />Is an estimate of the information sequence.
In the above algorithm, the likelihood ratio absolute value of the signalFar greater than the absolute value of the noise likelihood ratioAccordingly, the path metric value of the signal of the sequence information will be much smaller than the path metric value of the noise of the sequence information.
In other words, when no signal is transmitted, the path metric value of each of the L decoding paths comes from the path metric value of noise, and thus the distribution of the path metric values of each of the L decoding paths is similar.
When a signal is sent, due to the existence of the optimal decoding paths, the path metric value of one path in the L decoding paths is the path metric value of the correct signal, and the path metric value is far smaller than the path metric values of the other decoding paths, so that the distribution of the path metric values of all the decoding paths is uneven.
In determining the distribution of the path metric values, the embodiment of the application adopts variance determination, and the calculation of the variance can include: calculating the average value of DTX detection values of all decoding paths; and determining the variance according to the DTX detection value of each decoding path and the average value.
Specifically, let PM 1 ,PM 2 ,…,PM L For the path metric values of the decoder L paths, the average value of the path metric values isThe variance of the path metric is denoted +.>
When sigma is 2 The method comprises the steps of > TH, determining that a terminal is in a non-DTX state;
when sigma is 2 < = TH, determining that the terminal is in DTX state.
Where TH is the threshold value.
The DTX detection method provided by the application utilizes the characteristic that the signal and the noise are different in the distribution of DTX detection values, judges whether the terminal sending the information sequence is in a DTX state or not according to the distribution of the DTX detection values of all decoding paths in the decoding processing process of the information sequence by a decoder, so as to realize the detection of the DTX state of the terminal, and can determine the subsequent transmission strategy according to the DTX state of the terminal, thereby ensuring the signal transmission efficiency and avoiding the waste of transmission resources.
Example two
Fig. 4 is a schematic structural diagram of a DTX detection apparatus according to the present application. As shown in fig. 4, the detection device includes:
including memory 820, transceiver 800, processor 810:
a memory 820 for storing a computer program;
a transceiver 800 for transceiving data under the control of the processor 810;
a processor 810 for reading the computer program in the memory 820 and performing the following operations:
an information sequence to be detected is obtained, and a decoder is called to decode the information sequence to obtain an information estimated value; determining distribution of DTX detection values of each decoding path in the decoding process according to the information estimation value; determining whether a terminal transmitting the information sequence is in a DTX state according to the distribution of the DTX detection values
In an optional embodiment, the processor 810 is configured to perform the determining, according to the distribution of the DTX detection values, whether the terminal sending the information sequence is in a DTX state, specifically including:
determining the variance of the DTX detection value according to the DTX detection value of each decoding path;
if the variance is smaller than a preset threshold value, determining that the terminal for transmitting the information sequence is in a DTX state;
or if the variance is greater than or equal to a preset threshold value, determining that the terminal for transmitting the information sequence is not in a DTX state.
In an alternative embodiment, the processor 810 is configured to perform the determining the variance of the DTX detection value according to the DTX detection value of each decoding path, and specifically includes:
calculating the average value of DTX detection values of all decoding paths;
and determining the variance according to the DTX detection value of each decoding path and the average value.
In an alternative embodiment, the decoder is a multipath convolutional decoder, or a multipath polar decoder, and the DTX detection value is a path metric value.
In an alternative embodiment, the decoder is an RM decoder, and the DTX detection value is a correlation value.
In an optional embodiment, the processor 810 is configured to execute the obtaining the information sequence to be detected, and when invoking a decoder to decode the information sequence, specifically includes:
receiving an original code sent by a sending end;
and carrying out channel estimation and equalization processing on the original codes to obtain the information sequence to be detected.
Further, the transceiver 800 is used for receiving and transmitting data under the control of the processor 810.
Wherein in fig. 4, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 810 and various circuits of memory represented by memory 820, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 800 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, etc. The user interface z30 may also be an interface capable of interfacing with an inscribed desired device for a different user device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 810 is responsible for managing the bus architecture and general processing, and the memory 820 may store data used by the processor 600 in performing operations.
Alternatively, the processor 810 may be a CPU (Central processing Unit), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable Gate array) or CPLD (Complex Programmable Logic Device ), and the processor may also employ a multicore architecture.
The processor 810 is operable to perform any of the methods provided by embodiments of the present application in accordance with the obtained executable instructions by invoking a computer program stored in a memory. The processor and the memory may also be physically separate.
It should be noted that, the device provided by the present application can implement all the method steps implemented by the method embodiment and achieve the same technical effects, and the parts and beneficial effects that are the same as those of the method embodiment in the present embodiment are not described in detail herein.
Example III
Fig. 5 is a schematic structural diagram of another DTX detection apparatus according to the present application. As shown in fig. 5, the detection device includes:
a receiving unit 10 for obtaining an information sequence to be detected;
the decoding unit 11 is used for calling a decoder to decode the information sequence to obtain an information estimation value;
a detecting unit 12, configured to determine a distribution of DTX detection values of each decoding path in the decoding process according to the information estimation value; and the method is also used for determining whether the terminal transmitting the information sequence is in a DTX state according to the distribution of the DTX detection values.
In an alternative embodiment, the detecting unit 12 is specifically configured to: determining the variance of the DTX detection value according to the DTX detection value of each decoding path; if the variance is smaller than a preset threshold value, determining that the terminal for transmitting the information sequence is in a DTX state; or if the variance is greater than or equal to a preset threshold value, determining that the terminal for transmitting the information sequence is not in a DTX state.
In an alternative embodiment, the detecting unit 12 is specifically configured to: calculating the average value of DTX detection values of all decoding paths; and determining the variance according to the DTX detection value of each decoding path and the average value.
In an alternative embodiment, the decoder is a multipath convolutional decoder, or a multipath polar decoder, and the DTX detection value is a path metric value.
In an alternative embodiment, the decoder is an RM decoder, and the DTX detection value is a correlation value.
In an alternative embodiment, the decoding unit 11 is specifically configured to receive an original code sent by the sending end;
the decoding unit 11 is specifically configured to perform channel estimation and equalization processing on the original code to obtain the information sequence to be detected.
It should be noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in actual practice. In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution 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.) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Example IV
The application also provides a processor readable storage medium storing a computer program for causing the processor to perform the method of any one of the preceding claims.
The processor-readable storage medium may be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic storage (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), semiconductor storage (e.g., ROM, EPROM, EEPROM, nonvolatile storage (NAND FLASH), solid State Disk (SSD)), and the like.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable 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 processor-executable instructions may also be stored in a processor-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 processor-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 processor-executable 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.

Claims (12)

1. A method for DTX detection, the method comprising:
an information sequence to be detected is obtained, and a decoder is called to decode the information sequence to obtain an information estimated value;
determining distribution of DTX detection values of each decoding path in the decoding process according to the information estimation value;
determining whether a terminal transmitting the information sequence is in a DTX state according to the distribution of the DTX detection values;
the determining whether the terminal sending the information sequence is in a DTX state according to the distribution of the DTX detection values comprises:
determining the variance of the DTX detection value according to the DTX detection value of each decoding path;
if the variance is smaller than a preset threshold value, determining that the terminal for transmitting the information sequence is in a DTX state;
or if the variance is greater than or equal to a preset threshold value, determining that the terminal for transmitting the information sequence is not in a DTX state.
2. The method of claim 1 wherein said determining a variance of DTX detection values based on DTX detection values for each decoding path comprises:
calculating the average value of DTX detection values of all decoding paths;
and determining the variance according to the DTX detection value of each decoding path and the average value.
3. The method of claim 1 wherein the decoder is a multipath convolutional decoder or a multipath polar decoder and the DTX detection value is a path metric value.
4. The method of claim 1, wherein the decoder is an RM decoder and the DTX detection value is a correlation value.
5. The method according to any one of claims 1-4, wherein the obtaining the information sequence to be detected, and invoking a decoder to decode the information sequence, comprises:
receiving an original code sent by a sending end;
and carrying out channel estimation and equalization processing on the original codes to obtain the information sequence to be detected.
6. A DTX detection apparatus comprising a memory, a transceiver, and a processor:
a memory for storing a computer program;
a transceiver for transceiving data under control of the processor;
a processor for reading the computer program in the memory and performing the following operations:
an information sequence to be detected is obtained, and a decoder is called to decode the information sequence to obtain an information estimated value;
determining distribution of DTX detection values of each decoding path in the decoding process according to the information estimation value;
determining whether a terminal transmitting the information sequence is in a DTX state according to the distribution of the DTX detection values;
the processor is configured to execute the determining, according to the distribution of the DTX detection values, whether the terminal that transmits the information sequence is in a DTX state, and specifically includes:
determining the variance of the DTX detection value according to the DTX detection value of each decoding path;
if the variance is smaller than a preset threshold value, determining that the terminal for transmitting the information sequence is in a DTX state;
or if the variance is greater than or equal to a preset threshold value, determining that the terminal for transmitting the information sequence is not in a DTX state.
7. The apparatus of claim 6, wherein the processor is configured to perform the determining the variance of the DTX detection value based on the DTX detection values for each decoding path, specifically comprising:
calculating the average value of DTX detection values of all decoding paths;
and determining the variance according to the DTX detection value of each decoding path and the average value.
8. The apparatus of claim 6 wherein the decoder is a multipath convolutional decoder or a multipath polar decoder and the DTX detection value is a path metric value.
9. The apparatus of claim 6, wherein the decoder is an RM decoder and the DTX detection value is a correlation value.
10. The apparatus according to any one of claims 6-9, wherein the processor is configured to execute the obtaining the information sequence to be detected, and when invoking a decoder to decode the information sequence, specifically include:
receiving an original code sent by a sending end;
and carrying out channel estimation and equalization processing on the original codes to obtain the information sequence to be detected.
11. A DTX detection apparatus, comprising:
a receiving unit for obtaining an information sequence to be detected;
the decoding unit is used for calling a decoder to decode the information sequence to obtain an information estimation value;
the detection unit is used for determining the distribution of DTX detection values of each decoding path in the decoding process according to the information estimation value; and the method is also used for determining whether the terminal for transmitting the information sequence is in a DTX state according to the distribution of the DTX detection values;
the detection unit is specifically used for: determining the variance of the DTX detection value according to the DTX detection value of each decoding path; if the variance is smaller than a preset threshold value, determining that the terminal for transmitting the information sequence is in a DTX state; or if the variance is greater than or equal to a preset threshold value, determining that the terminal for transmitting the information sequence is not in a DTX state.
12. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the method of any one of claims 1 to 5.
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