CN109088703B - Link signal retransmission processing method and device and communication terminal equipment - Google Patents
Link signal retransmission processing method and device and communication terminal equipment Download PDFInfo
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- 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
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
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Abstract
The invention provides a link signal retransmission processing method, a device and a communication terminal device, which judge whether the number of currently received repeated signal units forms a signal slice or not by a preset signal unit slicing principle, if so, carry out uniform cooperative processing on each repeated signal unit belonging to the signal slice, and discard the repeated signal units received after the signal slice when determining that the repeated signal units meeting preset conditions exist in the signal slice according to the uniform cooperative processing result, so the scheme not only can reduce the time delay in a communication link, but also can save the memory space of a receiver because the receiver does not need to buffer the repeated signal units received after the signal slice and process the rest repeated signal units, thereby the receiver can process signals sent by more different senders and the satisfaction degree of user experience is improved.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for processing retransmission of a link signal, and a communication terminal device.
Background
In an existing communication link, in order to ensure that a receiver can correctly receive a signal sent by a sender, a signal retransmission technology is often applied, that is, when the sender sends a signal to a receiver, the signal is often repeatedly sent within a time period, and the receiver needs to perform a uniform process after all the repeated signals sent by the sender are received. For example, NB-IOT (Narrow Band Internet of Things) and eMTC (enhanced machine type Communication) are Internet-of-Things Communication systems based on cellular networks, which have wide coverage, many connections, low speed, low cost, low power consumption, and good architecture, and can be directly deployed in GSM (Global System for Mobile Communication, global System for Mobile communications), UMTS (Universal Mobile Telecommunications System), or LTE (Long Term Evolution) networks to reduce deployment cost and achieve smooth upgrade. In NB-IOT and eMTC, in order to enhance coverage, a repeat transmission mechanism is designed in corresponding protocols, taking PRACH (Physical Random Access Channel) as an example, when a terminal starts to initiate a call, multiple repeat subframes are continuously transmitted on the PRACH Channel to establish a connection with a cell and acquire uplink synchronization. Similarly, on the PUSCH (Physical Uplink Shared Channel), when a terminal transmits Uplink data, the terminal may repeatedly transmit the same data for a certain period of time.
For a signal continuously and repeatedly transmitted by a terminal within a period of time, a base station side performs unified processing (such as frequency offset estimation/compensation, time offset estimation/compensation, soft bit combination or repeated combination) after all the repeated signals are received, so as to check the repeatedly transmitted signal, but if the current communication conditions are good, the base station may obtain a correct check value only by performing unified processing on a part of the repeated signals, and if the base station still receives all the repeated signals, the unified processing is performed, so that PRACH access delay or uplink data processing time is significantly increased, and therefore, for some internet of things application scenarios requiring low delay, this is obviously inapplicable, and for a terminal, because the base station needs to perform processing only after receiving all the repeated signals transmitted by the terminal, the number of the repeated signals buffered by the base station is large, so that the number of the terminals available for other terminals is relatively small, and the buffering causes the number of the terminals in unit time of the base station to be limited.
Disclosure of Invention
The embodiment of the invention provides a link signal retransmission processing method, a device and communication terminal equipment, and mainly solves the technical problems that: in the existing communication link, a receiver can process all the repeated signals sent by a sender in a unified way only after receiving all the repeated signals, so that the receiver has a long processing time for the repeated signals sent by the sender, and the problem of large time delay is caused.
To solve the foregoing technical problem, an embodiment of the present invention provides a link signal retransmission processing method, including:
judging whether the number of the currently received repeated signal units forms a signal slice or not according to a preset signal unit slicing principle;
if yes, carrying out unified cooperative processing on each repeated signal unit belonging to the signal slice;
and when determining that the repeated signal units meeting the preset conditions exist in the signal sheet according to the unified cooperative processing result, discarding the repeated signal units received after the signal sheet.
An embodiment of the present invention further provides a link signal retransmission processing apparatus, including:
the judging module is used for judging whether the number of the currently received repeated signal units forms a signal slice according to a preset signal unit slicing principle;
and the processing module is used for performing unified cooperative processing on each repeated signal unit belonging to the signal slice when the judgment result is yes, and discarding the repeated signal unit received after the signal slice when the repeated signal unit meeting the preset condition is determined to exist in the signal slice according to the unified cooperative processing result.
An embodiment of the present invention further provides a communication terminal device, including: a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is configured to execute a link signal retransmission processing program stored in the memory to implement the steps in the above-mentioned link signal retransmission processing method.
The embodiment of the present invention further provides a computer storage medium, where a computer executable instruction is stored in the computer storage medium, and the computer executable instruction is used to execute the foregoing link signal retransmission processing method.
The invention has the beneficial effects that:
according to the link signal retransmission processing method, device, communication terminal equipment and computer storage medium provided by the embodiment of the invention, whether the number of currently received repeated signal units forms a signal slice is judged according to the preset signal unit slicing principle, if so, the repeated signal units belonging to the signal slice are subjected to unified cooperative processing, that is, when the receiver judges that the current repeated signal units form a signal slice according to the preset signal slicing principle, the repeated signal units in the signal slice are processed, that is, the time for the unified cooperative processing is advanced, and the time is not required to be waited until all the repeated signal units are received, and when the repeated signal units meeting the preset condition exist in the signal slice is determined according to the unified cooperative processing result, the repeated signal units received after the signal slice are discarded, that is, the scheme not only can reduce the time delay in a communication link, but also can avoid the need to process the remaining repeated signal units, so that the memory space of the receiver can be saved, and further, the receiver can process more different signals sent by the sender, and the user experience is improved.
Drawings
Fig. 1 is a flowchart illustrating a method for handling retransmission of a link signal according to an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating a unified cooperative processing of each repeated signal unit in a signal slice according to a first embodiment of the present invention;
FIG. 3 is a first flowchart illustrating a process of generating a final estimated offset parameter according to an embodiment of the present invention;
FIG. 4 is a second flowchart illustrating the process of generating the final estimated offset parameter according to the first embodiment of the present invention;
fig. 5 is a flowchart illustrating a method for processing retransmission of link signals according to a second embodiment of the present invention;
fig. 6 is a schematic diagram of a PRACH signal symbol set according to a third embodiment of the present invention;
fig. 7 is a schematic structural diagram of a third link signal retransmission processing apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a communication terminal device in a third embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
in order to reduce the time delay of the communication link, fully utilize the processing resource of the receiving party, and improve the satisfaction of the user experience, this embodiment provides a link signal retransmission processing method, as shown in fig. 1, which includes:
s1001: and determining the number of the currently received repeated signal units to form a signal slice according to a preset signal unit slicing principle.
In step S1001, during the process of receiving the repeated signal unit sent by the sending party, the receiving party can determine whether the currently received number meets the requirement, and if so, determine to divide the currently received repeated signal unit and the previously received repeated signal unit into one signal slice. It should be noted that the repeated signal unit in this embodiment may be a repeated signaling signal or a repeated data signal.
S1002: and carrying out unified cooperative processing on each repeated signal unit belonging to the signal slice.
S1003: and when determining that the repeated signal units meeting the preset conditions exist in the signal sheet according to the unified cooperative processing result, discarding the repeated signal units received after the signal sheet.
For step S1003, the repeated signal units received after the signal slice are discarded, that is, the receiver does not need to process the remaining repeated signal units, so that the processing resources of the receiver can be saved, the receiver can also feed back a message to the sender, and the sender can also stop sending the repeated signal units to the receiver after receiving the feedback message.
In addition, it should be noted that the method for processing retransmission of link signals provided in this embodiment may further include:
and when judging that no repeated signal unit meeting the preset condition exists in the signal slice according to the unified cooperative processing result, re-extracting the repeated signal unit forming one signal slice from the repeated signal units received after the signal slice according to the preset signal unit slicing principle to carry out unified cooperative processing until all the received repeated signal units are extracted.
Here, the preset signal unit slicing principle in this embodiment needs to be explained, and the preset signal unit slicing principle in this embodiment includes, but is not limited to, the following principles:
sequentially extracting N repeated signal units as a signal slice, wherein N is an integer greater than or equal to 1, that is, when the number of the signal slices processed by a receiving party comprises at least two, the number of the repeated signal units contained in each signal slice is equal;
or the like, or a combination thereof,
sequentially extracting N0 repeated signal units as a first signal slice, wherein N0 is an integer larger than or equal to 1, and when the signal slice needs to be generated again, sequentially extracting Ni + m repeated signal units as a signal slice, wherein Ni is the number of the repeated signal units contained in the previous signal slice, m is the increasing number, ni is an integer larger than or equal to 1, and m is an integer larger than or equal to 1. That is, when the number of signal slices processed by the receiving side includes at least two, the receiving side sequentially increases the number of repeated signal units within each signal slice processed by the receiving side during processing of the first signal slice and the last signal slice.
It should be understood that, referring to fig. 2, step S1002 in this embodiment may specifically include the following steps:
s201: and generating a final estimated offset parameter according to the relation between the repeated signal units in the signal slice.
S202: and compensating each repeated signal unit in the signal slice by using the final estimated offset parameter.
Because of the influence of various external conditions such as channel quality, noise interference and the like, each repeated signal unit is attenuated and distorted in the transmission process of a communication link, so that the repeated signal unit received by a receiving party is possibly unreal, in order to ensure the reliable transmission of signals, a corresponding offset parameter can be estimated for the repeated signal unit in the signal sheet at the receiving party, and the offset parameter represents the change of the repeated signal unit sent by a sending party in the communication link, namely the offset parameter indicates the error value between the repeated signal unit received by the receiving party and the repeated signal unit sent by the sending party.
Since the estimated offset parameter indicates an error value between the repeated signal unit received by the receiving side and the repeated signal unit sent by the sending side, compensating each repeated signal unit by using the estimated offset parameter is equivalent to restoring each repeated signal unit to obtain a relatively real signal, and therefore, each relatively real signal of each repeated signal unit in the signal slice is obtained in step S202.
It should be noted that the estimated offset parameter in this embodiment may include an estimated frequency offset parameter and/or an estimated time offset parameter. Specifically, referring to fig. 3, generating the final estimated offset parameter according to the relationship between the repeated signal units in the signal slice may include:
s31; estimating the pre-estimated offset parameter corresponding to each repeated signal unit in the signal sheet;
s32: and smoothing each estimated offset parameter to obtain the final estimated offset parameter of each repeated signal unit in the signal sheet.
In other embodiments, referring to fig. 4, generating the final estimated offset parameter according to the relationship between the repeated signal units in the signal slice may include:
s41, estimating the estimated offset parameter corresponding to each repeated signal unit in the signal slice.
S42: judging whether a signal sheet consisting of the repeated signal units exists before the signal sheet, if so, turning to S43, otherwise, turning to S45;
it should be noted that step S42 in the present embodiment may be executed before step S41, or may be executed simultaneously.
S43: and acquiring the final estimated offset parameter of each repeated signal unit in the previous signal sheet.
It should be understood that, after performing unified cooperative processing on each repetitive signal unit in a certain signal slice to generate a final estimated offset parameter corresponding to the signal slice, the estimated offset parameter may be stored so that a next signal slice may generate a final estimated offset parameter corresponding to a next signal slice by using the estimated offset parameter, a receiver may compensate each repetitive signal unit in the signal slice by using the final estimated offset parameter, and when it is determined that there is no repetitive signal unit satisfying a preset condition in the signal slice, the receiver may discard all repetitive signal units in the signal slice to release a larger memory space for the receiver.
S44: and smoothing the obtained final estimated offset parameter corresponding to the last signal piece and the estimated offset parameter corresponding to each repeated signal unit in the signal piece to obtain the final estimated offset parameter of each repeated signal unit in the signal piece.
S45: and directly smoothing each estimated offset parameter to obtain the final estimated offset parameter of each repeated signal unit in the signal sheet.
It should be understood that, in this embodiment, when the estimated offset parameters include the estimated frequency offset parameter and the estimated time offset parameter at the same time, the estimated time offset parameter and the estimated frequency offset parameter corresponding to each repetitive signal unit in the signal slice should be estimated respectively, and the estimated time offset parameter and the estimated frequency offset parameter are smoothed respectively to obtain the final estimated time offset parameter and the final estimated frequency offset parameter corresponding to the signal slice.
S203: and calculating according to the repeated signal unit subjected to compensation processing to generate a check value.
In this embodiment, the following steps are included in calculating and generating the check value according to the repeated signal unit subjected to compensation processing:
the first method is as follows:
calculating the signal power of the repeated signal unit after the compensation processing, and determining that the repeated signal unit meeting the preset condition exists in the signal slice according to the unified cooperative processing result at this time may include:
and judging whether the signal power meets a preset power threshold value, if so, judging that a repeated signal unit meeting a preset condition exists in the signal slice.
For example, when the terminal sends a PRACH signal to the base station to request access to a cell, after compensating a certain PRACH signal in a signal slice, the signal power of the compensated PRACH signal may be calculated, because different signals have different energies, and the signal power represents the magnitude of the signal energy, and if the signal power of the PRACH signal satisfies a preset power threshold, the signal may be considered as an access request signal. Of course, the preset power threshold can be flexibly set by a developer according to actual conditions.
Of course, when a plurality of repeated PRACH signals are included in one signal slice, and there are also a plurality of compensated PRACH signals at this time, the signal powers of the plurality of compensated PRACH signals may be sequentially calculated, and once it is determined that a certain PRACH signal satisfies the preset condition, the calculation of the signal powers corresponding to the remaining compensated PRACH signals in the signal slice may also be stopped, or the compensation of the PRACH signal in the signal slice may be stopped.
The second method comprises the following steps:
calculating the redundant code of the repeated signal unit after the compensation processing, and determining that the repeated signal unit meeting the preset condition exists in the signal chip according to the unified cooperative processing result at this time may include:
and judging whether the redundant code is matched with a preset redundant code, if so, judging that a repeated signal unit meeting a preset condition exists in the signal chip.
In some embodiments, the redundant codes can be obtained by repeatedly combining the repeated signal units subjected to compensation processing in the signal slice.
For example, when the terminal transmits the PUSCH signal to the base station, after compensating one PUSCH signal in one signal slice, the redundant code of the PUSCH signal subjected to compensation processing may be calculated, and if the redundant code matches with the preset redundant code, which indicates that the PUSCH signal has been correctly identified by the base station, the algorithm for presetting the redundant value and calculating the redundant code of the PUSCH signal subjected to compensation processing may be defined in the protocol in advance.
Of course, when a plurality of repeated PUSCH signals are included in one signal slice, and there are also a plurality of PUSCH signals subjected to compensation processing at this time, redundant codes of the plurality of PUSCH signals subjected to compensation processing may be sequentially calculated, and once it is determined that a certain PUSCH signal satisfies a preset condition, calculation of redundant codes corresponding to the remaining PUSCH signals subjected to compensation processing in the signal slice may also be stopped, or compensation of the PUSCH signals in the signal slice may be stopped.
The third method comprises the following steps:
and calculating the signal power of the repeated signal unit subjected to compensation processing and calculating the redundant code of the repeated signal unit subjected to compensation processing, namely combining the first mode and the second mode, respectively calculating the signal power and the redundant code of the repeated signal unit subjected to compensation processing in the signal slice, and judging whether the repeated signal unit meeting the preset condition exists in the signal slice according to the judgment rules of the first mode and the second mode respectively, wherein the repeated signal unit meeting the preset condition exists in the signal slice only when the signal power of the repeated signal unit in the signal slice is judged to meet the preset power threshold value and the corresponding redundant code is matched with the preset redundant code.
It should be finally noted that the link signal retransmission processing method provided in this embodiment is not only applicable to uplink transmission, but also applicable to downlink transmission.
According to the link signal retransmission processing method provided by the embodiment, when the receiver judges that the current repeated signal unit forms a signal slice according to the preset signal unit slicing principle, each repeated signal unit in the signal slice is processed, that is, the time for cooperative unified processing is advanced, and it is not required to wait until all the repeated signal units are received.
Example two:
for better understanding of the present invention, in this embodiment, a case that a terminal sends a repeated signal unit to a base station is taken as an example to illustrate on the basis of the first embodiment, and it is assumed that the repeated signal unit sent by the terminal to the base station in this embodiment is a repeated PRACH signal to request to establish a connection with the base station to acquire uplink synchronization, please refer to fig. 5, which includes:
s501: and determining the number of the currently received PRACH signals according to a preset signal unit fragmentation principle to form a signal fragment.
It should be noted that, in this embodiment, specific contents of the preset signal unit fragmentation principle may be flexibly set by a developer according to an actual application scenario, specifically, the developer may set a corresponding signal unit fragmentation principle according to the following manner: the method comprises the steps of obtaining the maximum access time delay of a communication link according to a current application scene, obtaining the repeated total number of PRACH signals which are at least sent to a base station by a terminal according to the maximum time delay and a time-frequency structure of the PRACH signals, supposing that the terminal is obtained by calculation and at least 32 repeated PRACH signals are sent to the base station, obtaining the number of the PRACH signals forming a signal slice according to the terminal number which is required by the application scene and is processed at least in unit time of the base station and the size of a hardware resource buffer space, supposing that each signal slice obtained by calculation needs to comprise 8 PRACH signals, dividing the 32 repeated PRACH signals into four pieces at the moment, wherein each piece comprises 8 PRACH signals. In the process that the terminal sends the PRACH signals to the base station, the base station takes the 8 PRACH signals as a signal slice every time the base station receives the 8 PRACH signals.
S502: and performing unified cooperative processing on each PRACH signal belonging to the signal slice.
When the terminal sends a PRACH signal to the base station, in order to eliminate symbol interference and inter-channel interference, a prefix CP is added on the basis of each PRACH signal, please refer to fig. 6, therefore, for step S502, the base station needs to perform CP removal processing on each received PRACH signal in order to obtain an original PRACH signal sent by the terminal, then extract frequency domain data corresponding to each PRACH signal through FFT (Fast Fourier transform), estimate frequency offset parameters of the 8 PRACH signals in the signal slice, perform smoothing processing on the 8 estimated frequency offset parameters to obtain final frequency offset parameters corresponding to the signal slice, perform frequency offset compensation on the 8 PRACH signals in the signal slice respectively by using the frequency offset parameters, then estimate time offset parameters of the 8 PRACH signals in the signal slice, perform smoothing processing on the 8 estimated time offset parameters to obtain final time offset parameters corresponding to the signal slice, perform time offset compensation on the 8 PRACH signals in the signal slice respectively by using the time offset parameters, then perform time offset compensation on the 8 PRACH signals in the signal slice, and perform repeated FFT noise estimation on the PRACH signal to obtain final time offset values.
S503: and judging whether a repeated signal unit meeting a preset condition exists in the signal piece according to the unified cooperative processing result, if so, turning to S504, and if not, turning to S505.
Whether a repeated signal unit meeting a preset condition exists in the signal slice can be judged according to the noise value of each PRACH signal, and specifically, the judgment can be carried out by comparing the calculated noise value with a preset noise value.
S504: and discarding the repeated signal units received after the signal slice.
S505: and re-extracting the PRACH signals forming one signal slice from the PRACH signals received after the signal slice according to a preset signal unit slicing principle to perform unified cooperative processing until all the PRACH signals received are extracted.
It should be further noted that, in this embodiment, a corresponding algorithm may be preset at the base station side to dynamically change the currently used signal unit fragmentation principle, for example, a plurality of signal unit fragmentation principles may be prestored in the base station according to a specific application scenario, hardware resource processing capability, and channel condition, where the plurality of signal unit fragmentation principles have a mapping table with the specific application scenario, hardware resource processing capability, and channel condition, and the base station may select a corresponding signal unit fragmentation principle according to the mapping table to perform fragmentation processing on a repeated PRACH signal before receiving the PRACH signal sent by the terminal, and of course, the base station may also determine whether to perform fragmentation processing by using a new signal unit fragmentation principle when processing each PRACH signal in one signal slice according to a certain signal unit fragmentation principle.
According to the link signal retransmission processing method provided by the embodiment, when the base station judges that the current PRACH signal forms a signal slice according to the preset signal unit slicing principle, each repeated PRACH signal in the signal slice is processed, namely, the time for cooperative unified processing is advanced, and the time does not need to wait until all PRACH signals are received.
Example three:
referring to fig. 7, the present embodiment provides a link signal retransmission processing apparatus, including a determining module 71 and a processing module 72, where the determining module 71 is configured to determine whether the number of currently received repeated signal units constitutes a signal slice according to a preset signal unit slicing principle; the processing module 72 is configured to, when the determination result is yes, perform unified cooperative processing on each repeated signal unit belonging to the signal slice, and when it is determined that a repeated signal unit meeting a preset condition exists in the signal slice according to the unified cooperative processing result, discard the repeated signal unit received after the signal slice.
It should be understood that the algorithm or program for implementing the functions of the determination module 71 and the processing module 72 in the present embodiment may be configured in a memory, and a controller or a processor may execute the algorithm or program in the memory to implement the functions of the determination module 71 and the processing module 72 in the present embodiment.
It should be noted that, during the process of receiving the repeated signal unit sent by the sender, the receiver can determine whether the currently received number meets the requirement while receiving, and if so, determine to divide the currently received repeated signal unit and the previously received repeated signal unit into one signal slice. It should be noted that the repeated signal unit in this embodiment may be a repeated signaling signal or a repeated data signal.
The processing module 72 in this embodiment is further configured to, when it is determined that there is no repeated signal unit meeting the preset condition in the signal slice according to the unified cooperative processing result, re-extract, according to a preset signal unit slicing principle, a repeated signal unit forming one signal slice from the repeated signal units received after the signal slice, and perform unified cooperative processing until all the received repeated signal units are extracted.
Here, the preset signal unit slicing principle in this embodiment needs to be explained, and the preset signal unit slicing principle in this embodiment includes, but is not limited to, the following principles:
sequentially extracting N repeated signal units as a signal slice, wherein N is an integer greater than or equal to 1, that is, when the number of signal slices processed by a receiving party comprises at least two, the number of the repeated signal units contained in each signal slice is equal;
or the like, or a combination thereof,
sequentially extracting N0 repeated signal units as a first signal slice, wherein N0 is an integer larger than or equal to 1, and when the signal slice needs to be generated again, sequentially extracting Ni + m repeated signal units as a signal slice, wherein Ni is the number of the repeated signal units contained in the previous signal slice, m is the increasing number, ni is an integer larger than or equal to 1, and m is an integer larger than or equal to 1. That is, when the number of signal slices processed by the receiving side includes at least two, the receiving side may sequentially increase the number of repeated signal units within each signal slice processed by the receiving side during processing of the first signal slice and the last signal slice.
In this embodiment, when performing unified cooperative processing on the repeated signal units belonging to the signal slice, the processing module 72 may generate a final estimated offset parameter according to a relationship between the repeated signal units in the signal slice, and compensate each repeated signal unit in the signal slice by using the final estimated offset parameter.
Because of the influence of various external conditions such as channel quality, noise interference and the like, each repeated signal unit is attenuated and distorted in the transmission process of a communication link, so that the repeated signal unit received by a receiving party is possibly unreal, in order to ensure the reliable transmission of signals, a corresponding offset parameter can be estimated for the repeated signal unit in the signal sheet at the receiving party, and the offset parameter represents the change of the repeated signal unit sent by a sending party in the communication link, namely the offset parameter indicates the error value between the repeated signal unit received by the receiving party and the repeated signal unit sent by the sending party.
Because the estimated offset parameter indicates the error value between the repeated signal unit received by the receiving party and the repeated signal unit sent by the sending party, the compensation of each repeated signal unit by using the estimated offset parameter is equivalent to the restoration of each repeated signal unit to obtain a relatively real signal.
Therefore, when generating the final estimated offset parameter according to the relationship between the repeated signal units in the signal slice, the processing module 72 in this embodiment may estimate the estimated offset parameter corresponding to each repeated signal unit in the signal slice, and perform smoothing processing on each estimated offset parameter to obtain the final estimated offset parameter of each repeated signal unit in the signal slice; or, the estimated offset parameter corresponding to each repetitive signal unit in the signal slice may be estimated, and when it is determined that a signal slice composed of the repetitive signal units exists before the signal slice, the final estimated offset parameter of each repetitive signal unit in the previous signal slice is obtained, and the final estimated offset parameter corresponding to the obtained previous signal slice and the estimated offset parameter corresponding to each repetitive signal unit in the signal slice are smoothed, so as to obtain the final estimated offset parameter of each repetitive signal unit in the signal slice.
In this embodiment, when calculating according to the repeated signal unit subjected to compensation processing to generate a check value, the processing module 72 may calculate the signal power of the repeated signal unit subjected to compensation processing, and determine whether the signal power meets a preset power threshold, if so, determine that the repeated signal unit meeting a preset condition exists in the signal slice; or, the redundant code of the repeated signal unit after compensation processing may be calculated, and whether the redundant code matches with the preset redundant code is determined, if so, it is determined that the repeated signal unit meeting the preset condition exists in the signal chip.
Finally, the link signal retransmission processing apparatus provided in this embodiment may be disposed in a mobile terminal or various fixed terminals, or may be disposed in a base station.
The present embodiment further provides a communication terminal device, please refer to fig. 8, which includes a processor 81, a memory 82 and a communication bus 83; the communication bus 83 in the present embodiment is used to realize connection communication between the processor 81 and the memory 82; the processor 81 is configured to execute the link signal retransmission processing program stored in the memory 82 to implement the steps in the link signal retransmission processing method according to any one of the first embodiment and the second embodiment.
By the link signal retransmission processing device and the communication terminal device provided by the embodiment, time delay in a communication link can be reduced, and memory space of a receiving party can be saved, so that the receiving party can process signals sent by more different sending parties, and satisfaction degree of user experience is improved.
It will be apparent to those skilled in the art that the modules or steps of the embodiments of the invention described above may be implemented in a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented in program code executable by a computing device, such that they may be stored on a computer storage medium (ROM/RAM, magnetic disk, optical disk) and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (7)
1. A link signal retransmission processing method comprises the following steps:
judging whether the number of the currently received repeated signal units forms a signal slice or not according to a preset signal unit slicing principle; wherein the repeated signal units constituting the signal sheet are a part of all the repeated signal units;
if yes, carrying out unified cooperative processing on each repeated signal unit belonging to the signal slice to generate a check value;
when the repeated signal unit meeting the preset condition is determined to exist in the signal sheet according to the unified cooperative processing result, discarding the repeated signal unit received after the signal sheet;
the method further comprises the following steps:
when judging that no repeated signal unit meeting preset conditions exists in the signal slice according to the unified cooperative processing result, re-extracting repeated signal units forming one signal slice from the repeated signal units received after the signal slice according to the preset signal unit slicing principle to perform unified cooperative processing until all the received repeated signal units are extracted;
the signal unit slicing principle comprises the following steps:
sequentially extracting N repeated signal units as a signal sheet, wherein N is more than or equal to 1;
or the like, or a combination thereof,
sequentially extracting N0 repeated signal units as a first signal piece, wherein N0 is more than or equal to 1, and sequentially extracting Ni + m repeated signal units as a signal piece when the signal piece needs to be generated again, wherein Ni is the number of the repeated signal units contained in the previous signal piece, m is the increasing number, ni is more than or equal to 1, and m is more than or equal to 1.
2. The method for processing retransmission of link signals according to claim 1, wherein the performing unified cooperative processing on the repeated signal units belonging to the signal slice and generating the check value comprises:
generating a final estimated offset parameter according to the relation between each repeated signal unit in the signal sheet;
compensating each repeated signal unit in the signal sheet by using the final estimated offset parameter;
and calculating according to the repeated signal unit subjected to compensation processing to generate a check value.
3. The method for processing retransmission of link signals according to claim 2, wherein said calculating the generated check value according to the compensated repeated signal units comprises:
calculating the signal power of the repeated signal unit subjected to compensation processing;
or the like, or a combination thereof,
calculating the redundant code of the repeated signal unit after compensation processing;
the determining that the repeated signal unit meeting the preset condition exists in the signal sheet according to the unified cooperative processing result comprises the following steps:
when the check value comprises signal power, judging whether the signal power meets a preset signal power threshold value, if so, judging that a repeated signal unit meeting a preset condition exists in the signal slice;
and when the check value comprises the redundant code, judging whether the redundant code is matched with a preset redundant code, if so, judging that a repeated signal unit meeting a preset condition exists in the signal chip.
4. The link signal retransmission processing method according to claim 2, wherein the estimated offset parameter comprises an estimated frequency offset parameter and/or an estimated time offset parameter; the generating of the final estimated offset parameter according to the relationship between the repeated signal units in the signal slice comprises:
estimating the pre-estimated frequency offset parameter and/or the pre-estimated time offset parameter corresponding to each repeated signal unit in the signal sheet;
and smoothing each estimated frequency deviation parameter and/or estimated time deviation parameter to obtain the final estimated frequency deviation parameter and/or estimated time deviation parameter of each repeated signal unit in the signal sheet.
5. The link signal retransmission processing method according to claim 2, wherein the estimated offset parameter comprises an estimated frequency offset parameter and/or an estimated time offset parameter; the generating of the final estimated offset parameter according to the relationship between the repeated signal units in the signal slice comprises:
estimating the pre-estimated frequency offset parameter and/or pre-estimated time offset parameter corresponding to each repeated signal unit in the signal slice;
judging whether a signal sheet consisting of the repeated signal units exists before the signal sheet, if so, acquiring the final estimated frequency offset parameter and/or estimated time offset parameter of each repeated signal unit in the previous signal sheet;
and smoothing the obtained final estimated frequency offset parameter and/or estimated time offset parameter corresponding to the last signal piece and the estimated frequency offset parameter and/or estimated time offset parameter corresponding to each repeated signal unit in the signal piece to obtain the final estimated frequency offset parameter and/or estimated time offset parameter of each repeated signal unit in the signal piece.
6. A link signal retransmission processing apparatus, comprising:
the judging module is used for judging whether the number of the currently received repeated signal units forms a signal sheet or not according to a preset signal unit slicing principle; wherein the repeated signal units constituting the signal sheet are a part of all the repeated signal units;
the processing module is used for carrying out unified cooperative processing on each repeated signal unit in the signal sheet to generate a check value when the judgment result is yes, and discarding the repeated signal unit received after the signal sheet when the repeated signal unit meeting the preset condition is determined to exist in the signal sheet according to the unified cooperative processing result;
the processing module is further configured to, when it is determined according to the unified co-processing result that there is no repetitive signal unit satisfying a preset condition in the signal slice, re-extract a repetitive signal unit constituting one signal slice from the repetitive signal units received after the signal slice according to the preset signal unit slicing principle to perform the unified co-processing until all the received repetitive signal units are extracted;
the signal unit slicing principle comprises the following steps:
sequentially extracting N repeated signal units as a signal sheet, wherein N is more than or equal to 1;
or the like, or a combination thereof,
sequentially extracting N0 repeated signal units as a first signal piece, wherein N0 is more than or equal to 1, and sequentially extracting Ni + m repeated signal units as a signal piece when the signal piece needs to be generated again, wherein Ni is the number of the repeated signal units contained in the previous signal piece, m is the increasing number, ni is more than or equal to 1, and m is more than or equal to 1.
7. A communication terminal device comprising: a processor, a memory, and a communication bus;
the communication bus is used for realizing connection communication between the processor and the memory;
the processor is configured to execute a link signal retransmission processing program stored in the memory to implement the steps in the link signal retransmission processing method according to any one of claims 1 to 5.
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