CN106301697B - retransmission monitoring control method, device and terminal for data transmission - Google Patents
retransmission monitoring control method, device and terminal for data transmission Download PDFInfo
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- 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
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Abstract
the invention provides a retransmission monitoring control method, a retransmission monitoring control device and a retransmission monitoring control terminal for data transmission. The retransmission monitoring control method is applied to a terminal and comprises the following steps: when uplink data are sent to a base station, acquiring the total number of preset retransmission scheduling monitoring positions, the preset evaluation duration of the first evaluation time when data transmission starts and a preset first adjustment step length of the total number of the retransmission scheduling monitoring positions; in the first evaluation time, acquiring a monitoring result of the retransmission scheduling times at each monitoring position according to the total number of the preset retransmission scheduling monitoring positions; and adjusting the total number of the retransmission scheduling monitoring positions according to the monitoring result and the preset first adjustment step length of the total number of the retransmission scheduling monitoring positions, so that the retransmission monitoring of data transmission is controlled according to the adjusted total number of the retransmission scheduling monitoring positions in the next second evaluation time.
Description
Technical Field
the present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a terminal for controlling retransmission monitoring of data transmission.
background
As shown in fig. 1, under the condition that a terminal does not obtain an uplink transmission resource grant, an uplink data transmission process includes four parts:
1) a Terminal (TX) sends an uplink Scheduling Request (SR) to Request a base station (RX) to allocate uplink data transmission resources, such as a subframe 2;
2) after receiving the terminal scheduling request, the base station performs uplink Grant (UL Grant) for the terminal in the corresponding subframe according to the current resource scheduling condition, and specifies the resource (time domain and frequency domain position) and format (modulation mode, etc.) for the terminal to send uplink data, such as subframe 8;
3) After receiving the uplink grant, the terminal sends uplink data on a corresponding resource, such as a subframe 12, according to the resource position and the data format specified in the uplink grant;
4) After finishing sending uplink data, the terminal needs to wait for feedback from the base station side to decide whether to perform retransmission or monitor retransmission scheduling, for example, in subframe 18, when receiving ACK fed back by the base station, it indicates that the reception is successful and no retransmission is needed;
Wherein, step 4 relates to an uplink retransmission mechanism. The uplink retransmission has two modes of synchronous self-adaptive retransmission and synchronous non-self-adaptive retransmission. "synchronous" means the retransmitted subframe is fixed in position; the 'non-adaptive retransmission' means that resources and transmission formats used by retransmission are completely the same as the initial transmission, the base station is not required to send a control signaling to indicate the transmission formats and the resources, and the terminal automatically triggers the non-adaptive retransmission after receiving NACK (indicating unsuccessful reception) fed back by the base station; the "adaptive retransmission" means that resources and transmission parameters can be changed according to actual channel state information during retransmission, so that each retransmission requires the base station to send a retransmission scheduling indication to indicate the resources and transmission format of the retransmission, and the terminal triggers the adaptive retransmission after detecting the retransmission scheduling sent by the base station.
if the terminal receives NACK or retransmission scheduling, which indicates that the base station does not receive correctly, the terminal initiates retransmission. If the terminal receives ACK (subframe 18 in fig. 1), which does not indicate that the uplink data is successfully received by the base station, the base station may still schedule adaptive retransmission on the subframe corresponding to the process (subframe 28 and subframe 38 … … in fig. 1), and the terminal needs to listen to the retransmission schedule on the corresponding subframe (subframe 28 and subframe 38 … … in fig. 1). The terminal only receives the new data scheduled by the base station in the process or reaches the maximum monitoring times, and the data reception is successful. If the new data scheduling or the retransmission scheduling of the base station is not received, the number of times that the terminal monitors the scheduling of the base station depends on the transmission number configured by the base station, the total number of the monitoring positions of the retransmission scheduling is equal to the transmission number-1, and the transmission number is configured to the terminal by the base station through an air interface signaling.
the feedback mechanism of the uplink data transmission aims to prevent the terminal from falsely detecting the acknowledgement message fed back by the base station. If the terminal falsely detects NACK as ACK, non-adaptive retransmission cannot be initiated, and the base station cannot receive the expected retransmission data packet. According to the existing scheme, the terminal still monitors retransmission scheduling for the data packet on the corresponding subframe, so that the base station can schedule adaptive retransmission at the next closest monitoring position after finding that the expected retransmission packet is not received, the terminal still retransmits the data packet after receiving the scheduling, and only the retransmission time is delayed by a plurality of subframes. Otherwise, the uplink data packet is lost.
the terminal may use one or more power consumption optimization schemes such as Discontinuous Reception (DRX) in actual operation. In the design of the power consumption optimization scheme, the terminal can close part of transceiver components and modules in advance in a time period without data transmission, and work in a low power consumption mode, so that the aims of saving electric quantity and prolonging the working time of a battery are fulfilled.
The terminal turns off one or more components according to the pre-evaluated length of the time interval in which the terminal can operate in the low power consumption mode. Whether certain components can be turned off depends on the low power mode duration (set to Tsleep). For example, the terminal determines a minimum time interval (set to Tmin) for which the device can be turned off based on its component characteristics. If the predicted Tsleep of the terminal is less than Tmin, no component can be turned off, and the purpose of saving electric quantity cannot be achieved. If Tsleep is greater than Tmin, a minimum time threshold for closing a component is reached, one or more components may be closed. As Tsleep increases, the number of components that can be shut down increases. When Tsleep reaches the maximum time threshold, most of the components can be powered off, the terminal power consumption is reduced to the lowest level, and deep sleep is entered. In summary, the time period during which the terminal can operate in the low power mode determines the number of components that can be turned off, and further determines the power saving effect.
In the existing uplink data transmission scheme, as shown in fig. 2, the listening and retransmission scheduling will repeatedly interrupt the sleep cycle, and cut off a long Tsleep segment into a short sleep time segments, resulting in very small saving gain brought by DRX. And the on/off component brings some extra preparation work, and the terminal wakes up from the sleep state to monitor the front and rear subframes of the subframe of the retransmission scheduling, so that the time length of the terminal working in the low power consumption mode is probably close to zero.
disclosure of Invention
the technical problem to be solved by the present invention is to provide a retransmission monitoring control method, apparatus and terminal for data transmission, which are used to solve the problems that when the existing terminal uploads data, due to the same total number of the agreed retransmission scheduling monitoring positions, whether retransmission scheduling occurs or not in the data transmission process needs to be monitored at the same position, and in such a monitoring manner, components on the terminal are repeatedly awakened, resulting in large power consumption and high power consumption of the terminal.
in order to solve the foregoing technical problem, an embodiment of the present invention provides a method for controlling retransmission monitoring of data transmission, which is applied to a terminal and includes:
when uplink data are sent to a base station, acquiring the total number of preset retransmission scheduling monitoring positions, the preset evaluation duration of the first evaluation time when data transmission starts and a preset first adjustment step length of the total number of the retransmission scheduling monitoring positions;
In the first evaluation time, acquiring a monitoring result of the retransmission scheduling times at each monitoring position according to the total number of the preset retransmission scheduling monitoring positions;
and adjusting the total number of the retransmission scheduling monitoring positions according to the monitoring result and the preset first adjustment step length of the total number of the retransmission scheduling monitoring positions, so that the retransmission monitoring of data transmission is controlled according to the adjusted total number of the retransmission scheduling monitoring positions in the next second evaluation time.
further, the step of obtaining the monitoring result of the retransmission scheduling times at each monitoring position according to the total number of the preset retransmission scheduling monitoring positions includes:
Recording the times of retransmission scheduling at each monitoring position;
the monitoring result is composed of monitoring positions and corresponding retransmission scheduling times of each monitoring position.
further, the step of adjusting the total number of the retransmission scheduling monitoring positions according to the monitoring result and the preset first adjustment step length of the total number of the retransmission scheduling monitoring positions, so that the retransmission monitoring for controlling data transmission according to the adjusted total number of the retransmission scheduling monitoring positions in the next second evaluation time includes:
When the monitoring result shows that the retransmission scheduling times of the preset monitoring positions are zero, reducing the total number of the retransmission scheduling monitoring positions on the basis of the total number of the preset retransmission scheduling monitoring positions according to the preset first adjustment step length, so that the total number of the adjusted retransmission scheduling monitoring positions is not less than 1;
And when the monitoring result shows that the number of the retransmission scheduling times of all the preset monitoring positions is not zero, increasing the total number of the retransmission scheduling monitoring positions on the basis of the total number of the preset retransmission scheduling monitoring positions according to the preset first adjusting step length, so that the increased total number of the retransmission scheduling monitoring positions does not exceed the preset maximum total number of the retransmission scheduling monitoring positions.
further, after the step of adjusting the total number of the retransmission scheduling monitoring positions according to the monitoring result and the preset adjustment step size of the total number of the retransmission scheduling monitoring positions, so as to control retransmission monitoring of data transmission according to the adjusted total number of the retransmission scheduling monitoring positions in the next second evaluation time, the retransmission monitoring control method further includes:
Obtaining an evaluation parameter of the current channel transmission quality;
acquiring a preset evaluation duration corresponding to second evaluation time in the evaluation parameter comparison table according to the evaluation parameters;
controlling retransmission monitoring of data transmission according to the total number of the adjusted retransmission scheduling monitoring positions within the second evaluation time;
Repeating the process in sequence until the data transmission is completed; wherein,
the evaluation parameter comparison table comprises: and evaluating thresholds corresponding to the parameters and preset evaluation duration corresponding to each threshold.
further, after the step of obtaining the evaluation parameter of the current channel transmission quality, the method for controlling retransmission listening further includes:
acquiring a preset second adjustment step length of the total number of the retransmission scheduling monitoring positions in the adjustment step length information table according to the evaluation parameter; wherein,
The step of controlling retransmission monitoring of data transmission according to the total number of the adjusted retransmission scheduling monitoring positions within the second evaluation time specifically comprises:
In a second evaluation time, controlling retransmission monitoring of data transmission according to the preset second adjustment step length and the total number of the adjusted retransmission scheduling monitoring positions; wherein,
the adjustment step length information table comprises: and evaluating thresholds corresponding to the parameters and preset adjustment step lengths of the total number of the retransmission scheduling monitoring positions corresponding to each threshold.
further, the evaluating parameters include: received signal strength and signal-to-noise ratio.
the embodiment of the invention provides a retransmission monitoring control device for data transmission, which is applied to a terminal and comprises the following components:
The first acquisition module is used for acquiring the total number of the preset retransmission scheduling monitoring positions, the preset evaluation duration of the first evaluation time for starting data transmission and the preset first adjustment step length of the total number of the retransmission scheduling monitoring positions when the uplink data is sent to the base station;
the second acquisition module is used for acquiring the monitoring result of the retransmission scheduling times of each monitoring position according to the total number of the preset retransmission scheduling monitoring positions in the first evaluation time;
and the adjusting module is used for adjusting the total number of the retransmission scheduling monitoring positions according to the monitoring result and the preset first adjusting step length of the total number of the retransmission scheduling monitoring positions, so that the retransmission monitoring of data transmission is controlled according to the adjusted total number of the retransmission scheduling monitoring positions in the next second evaluation time.
Further, the second obtaining module specifically includes:
recording the times of retransmission scheduling at each monitoring position;
the monitoring result is composed of monitoring positions and corresponding retransmission scheduling times of each monitoring position.
further, the adjusting module specifically includes:
when the monitoring result shows that the retransmission scheduling times of the preset monitoring positions are zero, reducing the total number of the retransmission scheduling monitoring positions on the basis of the total number of the preset retransmission scheduling monitoring positions according to the preset first adjustment step length, so that the total number of the adjusted retransmission scheduling monitoring positions is not less than 1;
and when the monitoring result shows that the number of the retransmission scheduling times of all the preset monitoring positions is not zero, increasing the total number of the retransmission scheduling monitoring positions on the basis of the total number of the preset retransmission scheduling monitoring positions according to the preset first adjusting step length, so that the increased total number of the retransmission scheduling monitoring positions does not exceed the preset maximum total number of the retransmission scheduling monitoring positions.
Further, the retransmission listening control device further includes:
a third obtaining module, configured to obtain an evaluation parameter of current channel transmission quality;
the evaluation duration obtaining module is used for obtaining a preset evaluation duration corresponding to second evaluation time in the evaluation parameter comparison table according to the evaluation parameters;
the retransmission monitoring module is used for controlling retransmission monitoring of data transmission according to the total number of the adjusted retransmission scheduling monitoring positions in the second evaluation time;
the third acquisition module, the evaluation duration acquisition module and the retransmission monitoring module work repeatedly in sequence until data transmission is finished; wherein,
The evaluation parameter comparison table comprises: and evaluating thresholds corresponding to the parameters and preset evaluation duration corresponding to each threshold.
further, the retransmission listening control device further includes:
an adjustment step length obtaining module, configured to obtain a preset second adjustment step length of the total number of retransmission scheduling monitoring positions in the adjustment step length information table according to the evaluation parameter; wherein,
the retransmission monitoring module specifically comprises:
In a second evaluation time, controlling retransmission monitoring of data transmission according to the preset second adjustment step length and the total number of the adjusted retransmission scheduling monitoring positions; wherein,
the adjustment step length information table comprises: and evaluating thresholds corresponding to the parameters and preset adjustment step lengths of the total number of the retransmission scheduling monitoring positions corresponding to each threshold.
Further, the evaluating parameters include: received signal strength and signal-to-noise ratio.
An embodiment of the present invention provides a terminal, including the above retransmission monitoring control apparatus for data transmission.
further, the terminal further includes: the device comprises a data transceiver, a power-saving optimization management device, a discontinuous receiving device and a measuring device; wherein,
The data transceiver is responsible for data transmission and data reception;
The discontinuous receiving device is used for triggering the retransmission monitoring control device to start working after being enabled;
the measuring device is connected with the retransmission monitoring control device and used for measuring the evaluation parameters of the channel transmission quality and transmitting the evaluation parameters to the retransmission monitoring control device;
The retransmission monitoring control device realizes the retransmission monitoring control of the data to the data receiving and transmitting device according to the received evaluation parameters;
the power-saving optimization management device controls the time and the sleep duration of the terminal entering the sleep mode according to the output of the discontinuous receiving device and the retransmission monitoring control device, and enables/disables partial components and functions of the data receiving and transmitting device according to the time and the sleep duration of the terminal entering the sleep mode.
the invention has the beneficial effects that:
According to the scheme, the total number of the retransmission scheduling monitoring positions of the terminal is adjusted in real time in the data transmission process, and the total number of the retransmission scheduling monitoring positions is reduced when less retransmission scheduling occurs in the data transmission process; therefore, the times that the terminal is awakened from the sleep period because of monitoring retransmission scheduling are reduced, the low-power-consumption working time of the terminal is prolonged, and the power consumption of the terminal is reduced.
Drawings
FIG. 1 is a diagram illustrating a timing diagram of uplink data transmission in the prior art;
FIG. 2 is a diagram illustrating a terminal sleep duration being interrupted by a listening retransmission schedule;
Fig. 3 is a general flowchart of the retransmission monitor control method according to the embodiment of the present invention;
Fig. 4 is a detailed flowchart of the retransmission monitor control method according to the embodiment of the present invention;
fig. 5 is a block diagram of the retransmission monitor control apparatus according to the embodiment of the present invention;
fig. 6 is a schematic diagram illustrating a structure of the terminal according to the embodiment of the present invention.
Detailed Description
in order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides a retransmission monitoring control method, a retransmission monitoring control device and a retransmission monitoring control terminal for data transmission, aiming at the problems that when the existing terminal uploads data, whether retransmission scheduling occurs or not needs to be monitored at the same position due to the fact that the total number of appointed retransmission scheduling monitoring positions is the same, and components on the terminal can be repeatedly awakened in the monitoring mode, so that power consumption of the terminal is high and power consumption is high.
As shown in fig. 3, an embodiment of the present invention provides a method for controlling retransmission listening for data transmission, which is applied to a terminal and includes:
Step 110, when sending uplink data to a base station, obtaining a preset total number of retransmission scheduling monitoring positions, a preset evaluation duration of a first evaluation time when data transmission starts, and a preset first adjustment step length of the total number of retransmission scheduling monitoring positions;
step 120, in the first evaluation time, according to the total number of the preset retransmission scheduling monitoring positions, acquiring the monitoring result of the retransmission scheduling times at each monitoring position;
Step 130, adjusting the total number of the retransmission scheduling monitoring positions according to the monitoring result and the preset first adjustment step length of the total number of the retransmission scheduling monitoring positions, so that the retransmission monitoring of the data transmission is controlled according to the adjusted total number of the retransmission scheduling monitoring positions in the next second evaluation time.
According to the scheme, in the process of one-time data transmission, the whole data transmission process is divided into a plurality of time periods, and the retransmission scheduling of data is respectively monitored in each time period, so that the total number of the retransmission scheduling monitoring positions in the next time period is adjusted; therefore, the times that the terminal is awakened from the sleep period because of monitoring retransmission scheduling are reduced, the low-power-consumption working time of the terminal is prolonged, and the power consumption of the terminal is reduced.
In step 110 of the foregoing embodiment, when a data transmission is started, the initial value of the total number of the preset retransmission scheduling listening positions may be configured to be a maximum value Nmax by the base station, where Nmax is equal to the transmission frequency-1; the terminal may also determine the current channel transmission quality, for example, when the channel transmission quality is better, the initial value is set to be relatively small, and conversely, the initial value is set to be relatively large. When data transmission starts, the evaluation duration and the preset first adjustment step length in the first evaluation time can be selected as initial setting values, or more appropriate initial values can be selected according to the channel transmission quality before the data transmission starts.
it should be noted that, in a data transmission process, a terminal may divide data with a larger length according to a data size specified by a base station to form a plurality of data pieces with a smaller length for transmission, and in a transmission process of each data piece, the terminal may transmit the data piece only after acquiring authorization of the base station; here, it can be considered that a data slice can be transmitted in a time frame, as further shown in fig. 1, that is, at the time of time frame 12, the data slice is transmitted completely, and the rest of the time is the monitoring of the retransmission schedule for whether the data slice is received successfully, and when the transmission is not successful, the retransmission is performed; in the above embodiment, the transmission process that may include multiple data slices within the first evaluation time is the same for each data slice at the position of listening to the retransmission schedule during the transmission process.
based on the above description, the specific implementation manner of step 120 of the present invention is:
recording the times of retransmission scheduling at each monitoring position;
the monitoring result is composed of monitoring positions and corresponding retransmission scheduling times of each monitoring position.
it should be noted that, as shown in fig. 1, each data slice listens at the position of the time frame 28 and the position of the time frame 38 of the data slice during transmission, so the statistics in step 120 are the total number of times of retransmission scheduling of all data slices at the position of the time frame 28 and the total number of times of retransmission scheduling at the position of the time frame 38 in the first evaluation time.
after the monitoring results of the retransmission scheduling times at each monitoring position are obtained, the total number of the retransmission scheduling monitoring positions can be adjusted, so that retransmission monitoring of data can be performed according to the adjusted total number of the retransmission scheduling monitoring positions in the next evaluation time. Therefore, the specific implementation manner of step 130 in the embodiment of the present invention is as follows:
when the monitoring result shows that the retransmission scheduling times of the preset monitoring positions are zero, reducing the total number of the retransmission scheduling monitoring positions on the basis of the total number of the preset retransmission scheduling monitoring positions according to the preset first adjustment step length, so that the total number of the adjusted retransmission scheduling monitoring positions is not less than 1;
And when the monitoring result shows that the number of the retransmission scheduling times of all the preset monitoring positions is not zero, increasing the total number of the retransmission scheduling monitoring positions on the basis of the total number of the preset retransmission scheduling monitoring positions according to the preset first adjusting step length, so that the increased total number of the retransmission scheduling monitoring positions does not exceed the preset maximum total number of the retransmission scheduling monitoring positions.
It should be noted that, in the transmission process of general data, the probability of occurrence of retransmission scheduling is larger as the time frame is farther, so that in the adjustment, under the condition that the total number of the monitoring positions of retransmission scheduling is not 1, when the statistical result shows that the monitoring result includes the condition that the number of times of occurrence of retransmission scheduling at the same monitoring position is zero, retransmission monitoring of data transmission needs to be reduced, and when the reduction is performed, the monitoring position arranged at the rearmost is preferentially removed, that is, one or more of the last monitoring positions are deactivated; under the condition that the total number of the retransmission scheduling monitoring positions is not the maximum value, when the statistical result shows that the monitoring result includes the condition that the times of retransmission scheduling occurring on all the monitoring positions are not zero, when the number of the retransmission scheduling occurring on all the monitoring positions is increased, the corresponding monitoring position is increased at the last of the original monitoring positions, namely, one or more last monitoring positions are started.
For example, the total number of maximum retransmission scheduling listening positions configured in data transmission is 10, that is, position 1 and position 2 … …, position 10, when data transmission starts, it is better to acquire channel transmission quality, and only listening at positions 1 to 4 is enabled, and in a first evaluation time, statistics shows that retransmission scheduling occurs at the listening positions from position 1 to position 4, at this time, it indicates that the number of the listening positions is unreasonable to select, and the number of the listening positions needs to be increased, and the listening positions are increased according to a preset first adjustment step size, for example, when the preset first adjustment step size is 2, at this time, two listening positions need to be increased, that is, two listening positions, that is, position 5 and position 6, are enabled after position 4.
The above implementation manner may be:
1. When Nmax is larger than or equal to N & gt 1 and sigma Ri is 0(i is an integer, i is N, N-1, N-2 … N-k +1, and delta N is larger than or equal to k and larger than or equal to 1), N is max { N-k, 1}, and at least one opportunity of monitoring retransmission scheduling is guaranteed;
2. when Nmax > N ≧ 1 and RN >0 (i.e., retransmission scheduling occurs on the last opportunity), then N ═ min { N + Δ N, Nmax };
3. Otherwise N remains unchanged;
wherein, N is the total number of the current monitoring retransmission scheduling, Nmax is the maximum value of the total number of the monitoring positions of the retransmission scheduling, and Δ N is a preset first adjustment step length.
obtaining the total number of the adjusted retransmission scheduling monitoring positions in the first evaluation time, and when adjusting the total number of the retransmission scheduling monitoring positions in the second evaluation time, firstly obtaining the evaluation duration and the second adjustment step length of the second evaluation time, wherein the evaluation duration and the first adjustment step length of the first evaluation time can be used in the second evaluation time under the condition of not increasing the power consumption of the terminal, but in order that the number of the retransmission monitoring positions can be quickly converged to a target value at high frequency when the channel condition is good, the quick adjustment with larger amplitude can be used, the evaluation duration is a smaller value, and the adjustment step length is a larger value; when the channel condition is poor, the convergence of the retransmission monitoring times may be low-frequency and slow, the evaluation duration takes a larger value, and the adjustment step length takes a smaller value.
therefore, in another embodiment of the present invention, after step 130, the method further includes:
obtaining an evaluation parameter of the current channel transmission quality;
Acquiring a preset evaluation duration corresponding to second evaluation time in the evaluation parameter comparison table according to the evaluation parameters;
controlling retransmission monitoring of data transmission according to the total number of the adjusted retransmission scheduling monitoring positions within the second evaluation time;
Repeating the process in sequence until the data transmission is completed; wherein,
the evaluation parameter comparison table comprises: and evaluating thresholds corresponding to the parameters and preset evaluation duration corresponding to each threshold.
optionally, after the step of obtaining the evaluation parameter of the current channel transmission quality, the method for controlling retransmission listening further includes:
acquiring a preset second adjustment step length of the total number of the retransmission scheduling monitoring positions in the adjustment step length information table according to the evaluation parameter; wherein,
The step of controlling retransmission monitoring of data transmission according to the total number of the adjusted retransmission scheduling monitoring positions within the second evaluation time specifically comprises:
In a second evaluation time, controlling retransmission monitoring of data transmission according to the preset second adjustment step length and the total number of the adjusted retransmission scheduling monitoring positions; wherein,
The adjustment step length information table comprises: and evaluating thresholds corresponding to the parameters and preset adjustment step lengths of the total number of the retransmission scheduling monitoring positions corresponding to each threshold.
It should be noted that, in the embodiment of the present invention, the evaluation parameter is preferably received signal strength (RSRP) and signal-to-noise ratio (SINR).
in the above scheme, a plurality of threshold values characterizing the channel condition are set, a plurality of different evaluation durations and adjustment step lengths are correspondingly set, and different evaluation durations and adjustment step lengths are selected in different threshold value ranges. And when the channel condition falls into a certain threshold value range, selecting the corresponding evaluation duration and the corresponding adjustment step length. The corresponding evaluation duration and the adjustment step length are selected according to the channel transmission quality, so that the total number of the retransmission scheduling monitoring positions can be quickly adjusted to a proper value, and the components on the terminal can be ensured to quickly reach a stable working state.
as shown in fig. 4, the detailed flow of the retransmission listening control method of the present invention is as follows:
when data transmission starts, setting the total number of initial retransmission scheduling monitoring positions (preferably the maximum value of network configuration so as to enable the terminal and the base station to be consistent when the transmission starts), and then determining the first-adjusted evaluation duration and adjustment step length; recording the positions where the retransmission scheduling occurs and the number of times of retransmission scheduling at each position under the current channel transmission condition within the evaluation duration of the first evaluation time, for example: the retransmission scheduling frequency occurring at the position 1 is R1, the retransmission scheduling frequency occurring at the position 2 is R2 … …, and the retransmission scheduling frequency occurring at the position n is Rn; adjusting the total number of the retransmission scheduling monitoring positions according to the recorded positions where the retransmission scheduling occurs and the retransmission scheduling times at each position and the adjustment step length; and then obtaining the evaluation duration and the adjustment step length of the next evaluation time, and adjusting the total number of the retransmission scheduling monitoring positions again in the next evaluation time until the data transmission is completed.
Corresponding to the above method, as shown in fig. 5, an embodiment of the present invention further provides a retransmission monitoring control apparatus for data transmission, which is applied to a terminal, and includes:
A first obtaining module 11, configured to obtain a preset first adjustment step length of a preset total number of retransmission scheduling monitoring positions, a preset evaluation duration of a first evaluation time when data transmission starts, and the total number of retransmission scheduling monitoring positions when uplink data is sent to a base station;
a second obtaining module 12, configured to obtain, within the first evaluation time, a monitoring result of the retransmission scheduling times at each monitoring location according to the total number of preset retransmission scheduling monitoring locations;
And an adjusting module 13, configured to adjust the total number of the retransmission scheduling monitoring positions according to the monitoring result and a preset first adjusting step length of the total number of the retransmission scheduling monitoring positions, so that in a next second evaluation time, retransmission monitoring of data transmission is controlled according to the adjusted total number of the retransmission scheduling monitoring positions.
optionally, the second obtaining module 12 specifically includes:
recording the times of retransmission scheduling at each monitoring position;
the monitoring result is composed of monitoring positions and corresponding retransmission scheduling times of each monitoring position.
further, the adjusting module 13 is specifically:
when the monitoring result shows that the retransmission scheduling times of the preset monitoring positions are zero, reducing the total number of the retransmission scheduling monitoring positions on the basis of the total number of the preset retransmission scheduling monitoring positions according to the preset first adjustment step length, so that the total number of the adjusted retransmission scheduling monitoring positions is not less than 1;
and when the monitoring result shows that the number of the retransmission scheduling times of all the preset monitoring positions is not zero, increasing the total number of the retransmission scheduling monitoring positions on the basis of the total number of the preset retransmission scheduling monitoring positions according to the preset first adjusting step length, so that the increased total number of the retransmission scheduling monitoring positions does not exceed the preset maximum total number of the retransmission scheduling monitoring positions.
further, the retransmission listening control device further includes:
a third obtaining module, configured to obtain an evaluation parameter of current channel transmission quality;
The evaluation duration obtaining module is used for obtaining a preset evaluation duration corresponding to second evaluation time in the evaluation parameter comparison table according to the evaluation parameters;
the retransmission monitoring module is used for controlling retransmission monitoring of data transmission according to the total number of the adjusted retransmission scheduling monitoring positions in the second evaluation time;
The third acquisition module, the evaluation duration acquisition module and the retransmission monitoring module work repeatedly in sequence until data transmission is finished; wherein,
the evaluation parameter comparison table comprises: and evaluating thresholds corresponding to the parameters and preset evaluation duration corresponding to each threshold.
further, the retransmission listening control device further includes:
An adjustment step length obtaining module, configured to obtain a preset second adjustment step length of the total number of retransmission scheduling monitoring positions in the adjustment step length information table according to the evaluation parameter; wherein,
The retransmission monitoring module specifically comprises:
in a second evaluation time, controlling retransmission monitoring of data transmission according to the preset second adjustment step length and the total number of the adjusted retransmission scheduling monitoring positions; wherein,
the adjustment step length information table comprises: and evaluating thresholds corresponding to the parameters and preset adjustment step lengths of the total number of the retransmission scheduling monitoring positions corresponding to each threshold.
further, the evaluating parameters include: received signal strength and signal-to-noise ratio.
it should be noted that, the embodiment of the retransmission monitor control apparatus is a retransmission monitor control apparatus corresponding to the retransmission monitor control method, and all implementation manners of the retransmission monitor control method are applicable to the embodiment of the retransmission monitor control apparatus, and the same technical effect as the retransmission monitor control method can also be achieved.
An embodiment of the present invention provides a terminal, including the above retransmission monitoring control apparatus for data transmission.
As shown in fig. 6, the terminal 20 further includes, in addition to the retransmission monitor control apparatus 21: a data transmitting/receiving device 22, a power saving optimization management device 23, a Discontinuous Reception (DRX) device 24, and a measurement device 25; wherein,
the data transceiver 22 is responsible for data transmission and data reception;
The Discontinuous Reception (DRX) device 24 is configured to trigger the retransmission monitor control device 21 to start operating after being enabled;
The measuring device 25 is connected to the retransmission monitoring control device 21, and is configured to measure an evaluation parameter of channel transmission quality, and transmit the evaluation parameter to the retransmission monitoring control device 21;
The retransmission monitoring control device 21 implements retransmission monitoring control of the data to the data transceiver 22 according to the received evaluation parameter;
The power saving optimization management device 23 controls the time and duration of the terminal entering the sleep mode according to the outputs of the Discontinuous Reception (DRX) device 24 and the retransmission monitoring control device 21, and enables/disables some components and functions of the data transceiver 22 according to the time and duration of the terminal entering the sleep mode.
It should be noted that the data transceiver 22 also switches related components according to the input of the power saving optimization management device 23, so as to achieve the purpose of power saving.
It should be noted that, the above-mentioned scheme of the present invention can reduce the number of monitoring positions for the terminal to monitor the unnecessary retransmission scheduling when the channel transmission quality is good, thereby reducing the number of times that the terminal is awakened from the sleep period because of the need of monitoring the retransmission scheduling, prolonging the working time of the terminal with low power consumption, and reducing the power consumption of the terminal; meanwhile, the number of retransmission scheduling monitoring positions can be automatically adjusted to a network configuration value under the condition that the channel quality is poor, so that the transmission quality is ensured; the scheme of the invention has no change on the network side and no change on the terminal hardware, and does not increase extra cost.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (14)
1. a method for controlling retransmission monitoring of data transmission is applied to a terminal, and is characterized by comprising the following steps:
when uplink data are sent to a base station, acquiring the total number of preset retransmission scheduling monitoring positions, the preset evaluation duration of the first evaluation time when data transmission starts and a preset first adjustment step length of the total number of the retransmission scheduling monitoring positions;
in the first evaluation time, acquiring a monitoring result of the retransmission scheduling times at each monitoring position according to the total number of the preset retransmission scheduling monitoring positions;
adjusting the total number of the retransmission scheduling monitoring positions according to the monitoring result and a preset first adjustment step length of the total number of the retransmission scheduling monitoring positions, and controlling retransmission monitoring of data transmission according to the adjusted total number of the retransmission scheduling monitoring positions in the next second evaluation time;
obtaining an evaluation parameter of the current channel transmission quality;
Acquiring a preset second adjustment step length of the total number of the retransmission scheduling monitoring positions in an adjustment step length information table according to the evaluation parameter;
The step of controlling retransmission monitoring of data transmission according to the adjusted total number of retransmission scheduling monitoring positions within the following second evaluation time specifically comprises: in a second evaluation time, controlling retransmission monitoring of data transmission according to the preset second adjustment step length and the total number of the adjusted retransmission scheduling monitoring positions;
Acquiring a preset evaluation duration corresponding to the second evaluation time in an evaluation parameter comparison table according to the evaluation parameters;
controlling retransmission monitoring of data transmission according to the total number of the adjusted retransmission scheduling monitoring positions within the second evaluation time;
This process is repeated in turn until the data transfer is complete.
2. the method according to claim 1, wherein the step of obtaining the listening result of the number of times of retransmission scheduling at each listening position according to the total number of the preset retransmission scheduling listening positions comprises:
recording the times of retransmission scheduling at each monitoring position;
the monitoring result is composed of monitoring positions and corresponding retransmission scheduling times of each monitoring position.
3. The method according to claim 1, wherein the step of adjusting the total number of the monitoring locations of the retransmission schedule according to the monitoring result and the preset first adjustment step of the total number of the monitoring locations of the retransmission schedule, so that the retransmission monitoring for the data transmission is controlled according to the adjusted total number of the monitoring locations of the retransmission schedule within the next second evaluation time includes:
when the monitoring result shows that the retransmission scheduling times of the preset monitoring positions are zero, reducing the total number of the retransmission scheduling monitoring positions on the basis of the total number of the preset retransmission scheduling monitoring positions according to the preset first adjustment step length, so that the total number of the adjusted retransmission scheduling monitoring positions is not less than 1;
and when the monitoring result shows that the number of the retransmission scheduling times of all the preset monitoring positions is not zero, increasing the total number of the retransmission scheduling monitoring positions on the basis of the total number of the preset retransmission scheduling monitoring positions according to the preset first adjusting step length, so that the increased total number of the retransmission scheduling monitoring positions does not exceed the preset maximum total number of the retransmission scheduling monitoring positions.
4. the method according to claim 1, wherein the evaluation parameter lookup table comprises: and evaluating thresholds corresponding to the parameters and preset evaluation duration corresponding to each threshold.
5. The method of claim 1, wherein the step size information table comprises: and evaluating thresholds corresponding to the parameters and preset adjustment step lengths of the total number of the retransmission scheduling monitoring positions corresponding to each threshold.
6. The method according to claim 1, wherein the evaluation parameter comprises: received signal strength and signal-to-noise ratio.
7. a retransmission monitoring control device for data transmission, applied to a terminal, includes:
the first acquisition module is used for acquiring the total number of the preset retransmission scheduling monitoring positions, the preset evaluation duration of the first evaluation time for starting data transmission and the preset first adjustment step length of the total number of the retransmission scheduling monitoring positions when the uplink data is sent to the base station;
the second acquisition module is used for acquiring the monitoring result of the retransmission scheduling times of each monitoring position according to the total number of the preset retransmission scheduling monitoring positions in the first evaluation time;
The adjusting module is used for adjusting the total number of the retransmission scheduling monitoring positions according to the monitoring result and the preset first adjusting step length of the total number of the retransmission scheduling monitoring positions, so that the retransmission monitoring of data transmission is controlled according to the adjusted total number of the retransmission scheduling monitoring positions in the next second evaluation time;
a third obtaining module, configured to obtain an evaluation parameter of current channel transmission quality;
the adjustment step length obtaining module is used for obtaining a preset second adjustment step length of the total number of the retransmission scheduling monitoring positions in an adjustment step length information table according to the evaluation parameter;
a retransmission monitoring module: in a second evaluation time, controlling retransmission monitoring of data transmission according to the preset second adjustment step length and the total number of the adjusted retransmission scheduling monitoring positions;
the evaluation duration obtaining module is used for obtaining a preset evaluation duration corresponding to the second evaluation time in an evaluation parameter comparison table according to the evaluation parameters;
the retransmission monitoring module is used for controlling retransmission monitoring of data transmission according to the total number of the adjusted retransmission scheduling monitoring positions in the second evaluation time;
and the third acquisition module, the evaluation duration acquisition module and the retransmission monitoring module sequentially repeat work until data transmission is finished.
8. the apparatus for controlling retransmission listening according to claim 7, wherein the second obtaining module specifically is:
recording the times of retransmission scheduling at each monitoring position;
The monitoring result is composed of monitoring positions and corresponding retransmission scheduling times of each monitoring position.
9. the apparatus for controlling retransmission listening according to claim 7, wherein the adjusting module is specifically configured to:
When the monitoring result shows that the retransmission scheduling times of the preset monitoring positions are zero, reducing the total number of the retransmission scheduling monitoring positions on the basis of the total number of the preset retransmission scheduling monitoring positions according to the preset first adjustment step length, so that the total number of the adjusted retransmission scheduling monitoring positions is not less than 1;
and when the monitoring result shows that the number of the retransmission scheduling times of all the preset monitoring positions is not zero, increasing the total number of the retransmission scheduling monitoring positions on the basis of the total number of the preset retransmission scheduling monitoring positions according to the preset first adjusting step length, so that the increased total number of the retransmission scheduling monitoring positions does not exceed the preset maximum total number of the retransmission scheduling monitoring positions.
10. the apparatus for controlling retransmission listening according to claim 7, wherein the evaluation parameter lookup table comprises: and evaluating thresholds corresponding to the parameters and preset evaluation duration corresponding to each threshold.
11. the apparatus for controlling retransmission listening according to claim 7, wherein the adjustment step size information table comprises: and evaluating thresholds corresponding to the parameters and preset adjustment step lengths of the total number of the retransmission scheduling monitoring positions corresponding to each threshold.
12. The apparatus according to claim 7, wherein the evaluation parameter comprises: received signal strength and signal-to-noise ratio.
13. a terminal, characterized in that it comprises a retransmission listening control means for a data transmission according to any one of claims 7 to 12.
14. The terminal of claim 13, wherein the terminal further comprises: the device comprises a data transceiver, a power-saving optimization management device, a discontinuous receiving device and a measuring device; wherein,
The data transceiver is responsible for data transmission and data reception;
The discontinuous receiving device is used for triggering the retransmission monitoring control device to start working after being enabled;
the measuring device is connected with the retransmission monitoring control device and used for measuring the evaluation parameters of the channel transmission quality and transmitting the evaluation parameters to the retransmission monitoring control device;
the retransmission monitoring control device realizes the retransmission monitoring control of the data to the data receiving and transmitting device according to the received evaluation parameters;
the power-saving optimization management device controls the time and the sleep duration of the terminal entering the sleep mode according to the output of the discontinuous receiving device and the retransmission monitoring control device, and enables/disables partial components and functions of the data receiving and transmitting device according to the time and the sleep duration of the terminal entering the sleep mode.
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| CN110099404B (en) * | 2018-01-30 | 2022-07-15 | 中国移动通信有限公司研究院 | Duration testing method and device |
| WO2020155156A1 (en) * | 2019-02-02 | 2020-08-06 | Nokia Shanghai Bell Co., Ltd. | Apparatus, method and computer program |
| WO2022021060A1 (en) * | 2020-07-28 | 2022-02-03 | 北京小米移动软件有限公司 | Reception indicating method and apparatus, and reception control method and apparatus |
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