CN112996094A - TA-based uplink power adjustment method and device, electronic equipment and storage medium - Google Patents
TA-based uplink power adjustment method and device, electronic equipment and storage medium Download PDFInfo
- Publication number
- CN112996094A CN112996094A CN201911304769.1A CN201911304769A CN112996094A CN 112996094 A CN112996094 A CN 112996094A CN 201911304769 A CN201911304769 A CN 201911304769A CN 112996094 A CN112996094 A CN 112996094A
- Authority
- CN
- China
- Prior art keywords
- adjustment
- information
- power
- uplink power
- point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/146—Uplink power control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/30—TPC using constraints in the total amount of available transmission power
- H04W52/36—TPC using constraints in the total amount of available transmission power with a discrete range or set of values, e.g. step size, ramping or offsets
- H04W52/367—Power values between minimum and maximum limits, e.g. dynamic range
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention provides a TA-based uplink power adjustment method, a TA-based uplink power adjustment device, electronic equipment and a storage medium, wherein power adjustment information for adjusting uplink power according to various types of TA change information is preset. And determining TA change information according to the TA reported by the terminal twice, and adjusting the uplink power according to the power adjustment information corresponding to the TA change information. Because more accurate TA can be determined through measurement, the uplink power adjusted through the TA is more consistent with the network condition of the position of the user, and more accurate and effective power control is realized.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a TA-based uplink power adjustment method and apparatus, an electronic device, and a storage medium.
Background
The problem of uplink power control of users in a wireless system is always important and a special problem which is hot, the uplink power control of the existing wireless system is designed and realized based on the relevant measurement of the uplink signal strength and the quality of a wireless communication system, and the realization scheme mainly comprises two steps: firstly, a target signal-to-noise ratio of a user is set based on measured values of path loss and low noise (namely, a target value is set for next power control), then the actual strength and quality of an uplink signal of the user, namely the actual signal-to-noise ratio value, is measured, and then the uplink power of the user is adjusted to enable the actual signal-to-noise ratio value to approach the target signal-to-noise ratio value, so that the process of controlling the uplink power of the user is realized.
Therefore, in the existing method, the uplink power is controlled according to the strength and quality of the signal, and due to a lot of factors influencing the strength and quality of the signal, the measurement error of the strength and quality of the signal is large, and the accurate control of the uplink power cannot be realized.
Disclosure of Invention
Embodiments of the present invention provide a TA-based uplink power adjustment method, apparatus, electronic device, and storage medium, to solve the problem in the prior art that due to a lot of factors affecting signal strength and quality, measurement errors of signal strength and quality are large, and accurate control of uplink power cannot be achieved.
In view of the foregoing technical problems, in a first aspect, an embodiment of the present invention provides a TA-based uplink power adjustment method, including:
acquiring a first Time Advance (TA) reported by a terminal and a second TA reported last time before the first TA;
adjusting a second uplink power corresponding to the second TA according to the first TA, the second TA and the power adjustment information to obtain an adjustment result;
sending the adjustment result to the terminal, so that the terminal determines a first uplink power corresponding to the first TA according to the adjustment result;
the power adjustment information includes information for adjusting uplink power corresponding to each TA variation information.
In a second aspect, an embodiment of the present invention provides an uplink power adjustment apparatus based on TA, including:
an obtaining module, configured to obtain a first Timing Advance (TA) reported by a terminal and a second TA reported last before the first TA;
the adjusting module is configured to adjust a second uplink power corresponding to the second TA according to the first TA, the second TA, and the power adjustment information, so as to obtain an adjustment result;
a sending module, configured to send the adjustment result to the terminal, so that the terminal determines, according to the adjustment result, a first uplink power corresponding to the first TA;
the power adjustment information includes information for adjusting uplink power corresponding to each TA variation information.
In a third aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the TA-based uplink power adjustment method when executing the program.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the TA-based uplink power adjustment method.
Embodiments of the present invention provide a TA-based uplink power adjustment method, apparatus, electronic device, and storage medium, where power adjustment information for adjusting uplink power according to various types of TA variation information is preset. And determining TA change information according to the TA reported by the terminal twice, and adjusting the uplink power according to the power adjustment information corresponding to the TA change information. Because more accurate TA can be determined through measurement, the uplink power adjusted through the TA is more consistent with the network condition of the position of the user, and more accurate and effective power control is realized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating a TA-based uplink power adjustment method according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a coverage area of a wireless signal of a base station according to another embodiment of the present invention;
fig. 3 is a schematic diagram of power adjustment information for adjusting uplink power at each preset TA adjustment point when the TA variation trend is TA increase according to another embodiment of the present invention;
fig. 4 is a schematic diagram of power adjustment information for adjusting uplink power at each preset TA adjustment point when the TA variation trend is TA decrease according to another embodiment of the present invention;
fig. 5 is a schematic overall flowchart of TA-based uplink power control according to another embodiment of the present invention;
fig. 6 is a block diagram of a TA-based uplink power adjustment apparatus according to another embodiment of the present invention;
fig. 7 is a schematic physical structure diagram of an electronic device according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the communication process, when a terminal is located at different positions of the coverage of a base station signal, it is usually required to transmit uplink information to the base station with different uplink powers. In order to better implement uplink power control, the present embodiment provides a TA-based uplink power adjustment method, which is generally performed by a base station. And after determining the adjustment result of the uplink power, the base station sends the adjustment result to the terminal so that the terminal sends the uplink information through the adjusted uplink power. Fig. 1 is a schematic flowchart of a TA-based uplink power adjustment method provided in this embodiment, where the method includes:
step 101: the method comprises the steps of acquiring a first TA (Timing Advance) reported by a terminal and a second TA reported last time before the first TA.
TA refers to the delay in signal transmission, reflecting the distance of the terminal from the base station, and 1TA is equal to about 550 meters.
The terminal in step 101 may be a User Equipment (UE), an access terminal, a UE unit, a UE station, a mobile station, a remote terminal, a mobile device, a UE terminal, a wireless communication device, a UE agent, a UE device, or the like. The access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal in a future 5G network or a terminal in a future evolved PLMN network, and the like.
Step 102: adjusting a second uplink power corresponding to the second TA according to the first TA, the second TA and the power adjustment information to obtain an adjustment result; the power adjustment information includes information for adjusting uplink power corresponding to each TA variation information.
The power adjustment information is preset information, TA variation information set according to the corresponding relationship, and information for adjusting the uplink power. The TA change information may be a change of TA increase and/or decrease in different TA ranges. Specifically, the TA change information may include: the TA is increased or decreased to approach a predetermined TA adjustment point, and the TA is increased or decreased to move away from a predetermined TA adjustment point. The power adjustment information indicates how to adjust the uplink power in response to a certain TA variation information. Specifically, the power adjustment information may include increasing uplink power, decreasing uplink power, and/or a range of uplink power adjustments. For example, the power adjustment information is to increase the uplink power, and the increased uplink power is smaller than a power adjustment target.
The second uplink power is the uplink power corresponding to the second TA, that is, the uplink power of the terminal that last transmitted the uplink signal. The adjustment result may be a power value that needs to be adjusted based on the second uplink power, for example, the adjustment result is to increase or decrease the second uplink power by 2 dbm values. The adjustment result may also be the adjusted first uplink power corresponding to the first TA, which is not specifically limited in this embodiment.
Step 103: and sending the adjustment result to the terminal so that the terminal determines the first uplink power corresponding to the first TA according to the adjustment result.
And if the adjustment result is the adjustment value for adjusting the second uplink power, the terminal calculates the first uplink power according to the received adjustment result and sends an uplink signal according to the first uplink power. For example, if the adjustment result is that 2 dbm values are added, the first uplink power is equal to the second uplink power added by 2 dbm values.
And if the adjustment result is the first uplink power after the second uplink power is adjusted, the terminal sends an uplink signal according to the adjustment result.
In this embodiment, power adjustment information for adjusting uplink power according to various types of TA variation information is preset. And determining TA change information according to the TA reported by the terminal twice, and adjusting the uplink power according to the power adjustment information corresponding to the TA change information. Because more accurate TA can be determined through measurement, the uplink power adjusted through the TA is more consistent with the network condition of the position of the user, and more accurate and effective power control is realized.
Further, to create the power adjustment information, on the basis of the above embodiment, the method further includes:
determining at least one preset TA adjusting point from TA corresponding to each point in a coverage area of a base station signal;
for each preset TA adjusting point, determining TA change information corresponding to the preset TA adjusting point, wherein the TA change information comprises that the TA is close to or far away from the preset TA adjusting point according to different change trends;
determining power adjustment information corresponding to each TA change information;
the variation trend is TA increase or TA decrease.
It should be noted that the predetermined TA adjustment point may be selected empirically, or may be selected at equal intervals between the TA minimum and the TA maximum in the coverage area of the base station signal. For each preset TA adjustment point, power adjustment information corresponding to different TA change information may be set. The power adjustment information may also be determined empirically or through actual measurement. For example, if a predetermined TA adjustment point is far away from or close to the base station, the uplink power needs to be reduced, because when the distance is close, the effect of sending uplink information can be achieved by small uplink power, and when the distance is far away, if the uplink power is large, other terminals or base stations are interfered. When the distance between the preset TA adjusting point and the base station is a moderate value, the uplink power can be properly improved, interference is avoided, and the signal transmission quality is improved.
Specifically, for a certain predetermined TA adjustment point, it is found through measurement that when the terminal moves closer to the predetermined TA adjustment point with an increase in TA, the uplink power needs to be increased, and when the terminal moves away from the predetermined TA adjustment point with an increase in TA, the uplink power also needs to be increased. Then, the power adjustment information includes: when the TA change information is that TA increases to be close to a preset TA adjusting point, the power adjusting information is to improve uplink power; when the TA change information is that TA is reduced to be close to a preset TA adjusting point, the power adjusting information is used for reducing uplink power; when the TA change information is that the TA is increased and is far away from a preset TA adjusting point, the power adjusting information is used for increasing the uplink power; and when the TA change information is that the TA is reduced and is far away from the preset TA adjusting point, the power adjusting information is used for reducing the uplink power.
Fig. 2 is a schematic diagram of a coverage area of a base station wireless signal provided in this embodiment, referring to fig. 2, if power adjustment information is established for the coverage area of the base station wireless signal shown in fig. 2, 3 preset TA adjustment points may be set in fig. 2, which are respectively a TA corresponding to a point on the circumference of a circle 201 in fig. 2 (i.e., a near point TA adjustment point), a TA corresponding to a point on the circumference of a circle 202 (i.e., a midpoint TA adjustment point), and a TA corresponding to a point on the circumference of a circle 203 (i.e., a far point TA adjustment point). These 3 preset TA adjustment points effectively divide the base station signal coverage area into 3 coverage areas.
After the predetermined TA adjustment points are determined, corresponding power adjustment information may be set for each of the predetermined TA adjustment points. Fig. 3 is a schematic diagram of power adjustment information for adjusting uplink power at each preset TA adjustment point when the TA variation trend provided by the present embodiment is that the TA increases, and fig. 4 is a schematic diagram of power adjustment information for adjusting uplink power at each preset TA adjustment point when the TA variation trend provided by the present embodiment is that the TA decreases. Referring to fig. 3, no matter what variation trend the TA variation information has, the power adjustment information for adjusting the uplink power is set up when the TA variation information is close to or far from each preset TA adjustment point.
Specifically, referring to fig. 3, when the location change trend of the user is "coverage area 1" - > "coverage area 2" - > "coverage area 3" (i.e., the TA change information includes that the TA is sequentially close to the near point TA adjustment point, the midpoint TA adjustment point, and the far point TA adjustment point with TA increase, and the TA is sequentially far from the near point TA adjustment point, the midpoint TA adjustment point, and the far point TA adjustment point with TA increase), the uplink power control first goes through an improvement process to improve the coverage effect of the signal. And then, the descending process is carried out to reduce the uplink interference of the remote point user to the users in the coverage area of other wireless base station systems. Referring to fig. 4, when the location change trend of the user is "coverage area 3" - > "coverage area 2" - > "coverage area 1" (i.e., the TA change information includes that the TA is sequentially close to the near point TA adjustment point, the midpoint TA adjustment point, and the far point TA adjustment point by TA decrease, and the TA is sequentially away from the near point TA adjustment point, the midpoint TA adjustment point, and the far point TA adjustment point by TA decrease), the uplink power control first goes through an improvement process to improve the coverage effect of the signal. And then, performing a descending process to meet the requirement that the near-point user can achieve the effect of near-point coverage by sending with proper uplink power.
In this embodiment, by setting the power adjustment information, the uplink power is adjusted according to the TA and the power adjustment information.
In order to further improve the effect of adjusting the uplink power and avoid the uplink power overshoot, in this embodiment, a power adjustment target is set for each preset TA adjustment point to limit the range of adjusting the uplink power. Further, in addition to the above embodiments, the determining power adjustment information corresponding to each TA variation information includes:
determining a power adjustment target corresponding to the preset TA adjustment point;
when the TA change information is first change information, if the power adjustment information is to increase the uplink power, the adjusted uplink power is smaller than the power adjustment target, and if the power adjustment information is to reduce the uplink power, the adjusted uplink power is larger than the power adjustment target, wherein the first change information comprises that the TA approaches the preset TA adjustment point with different change trends;
when the TA change information is second change information, if the power adjustment information is to increase the uplink power, the adjusted uplink power is greater than the power adjustment target, and if the power adjustment information is to decrease the uplink power, the adjusted uplink power is less than the power adjustment target, where the second change information includes that the TA is away from the preset TA adjustment point with different change trends;
when the change trends of the TAs in the TA change information are the same, the corresponding power adjustment information is the same between the adjacent TA adjustment points.
Further, between adjacent TA adjustment points, when the TA variation trend in the TA variation information is the same, the corresponding power adjustment information is the same, specifically including:
between adjacent TA adjusting points, the TA change information is a change trend that TA increases with TA, a smaller value is far away from the adjacent preset TA adjusting points and a change trend that TA increases with TA, a larger value is close to the adjacent preset TA adjusting points, and the corresponding power adjusting information is the uplink power increase or uplink power decrease; the TA variation information is a variation trend that TA decreases with TA, a larger value in the adjacent preset TA adjustment points is far away from the TA variation trend that TA decreases with TA, and power adjustment information corresponding to a smaller value in the adjacent preset TA adjustment points is both the uplink power increase or the uplink power decrease. That is, in the interval formed by the adjacent preset TA adjustment points, the uplink power is monotonous along with the change of TA.
It should be noted that, in the power adjustment information, it may be set that when the TA is equal to a certain preset TA adjustment point, the uplink power corresponding to the TA is equal to a power adjustment target at the preset TA adjustment point. Of course, the uplink power corresponding to the TA may also be set according to the power adjustment information corresponding to the TA change information, and is smaller than or larger than the power adjustment target at the preset TA adjustment point. Specifically, the method comprises the following steps:
further, when the TA change information is the first change information and the changed TA is equal to the preset TA adjustment point, if the power adjustment information is to increase the uplink power, the adjusted uplink power is less than or equal to the power adjustment target, and if the power adjustment information is to decrease the uplink power, the adjusted uplink power is greater than or equal to the power adjustment target.
Further, when the TA change information is second change information and the changed TA is equal to the preset TA adjustment point, if the power adjustment information is to increase the uplink power, the adjusted uplink power is greater than or equal to the power adjustment target, and if the power adjustment information is to decrease the uplink power, the adjusted uplink power is less than or equal to the power adjustment target.
As shown in fig. 3 and 4, the near point TA adjustment point, the middle point TA adjustment point, and the far point TA adjustment point are respectively provided with a "near point power adjustment target", a "middle point power adjustment target", and a "far point power adjustment target". The maximum value of the uplink power is improved by setting a power adjustment target to be limited at a certain preset TA (timing advance) adjustment point, and the minimum value of the uplink power is reduced at the certain preset TA adjustment point, so that the overshoot of the uplink power is avoided, and the adjustment effect of the uplink power is optimized.
Based on the determined power adjustment information, further, on the basis of the foregoing embodiments, the foregoing step 102 includes:
determining the change trend of the TA according to the second TA and the first TA as a first change trend;
determining third change information according to the first change trend, and/or determining fourth change information according to the second change trend, and taking the determined third change information and/or fourth change information as the TA change information, wherein the first change trend and the second change trend are opposite change trends;
determining power adjustment information corresponding to the TA change information, and adjusting the second uplink power according to the determined power adjustment information to obtain an adjustment result;
the third change information is that a first change trend is close to a first TA adjustment point, and the first TA adjustment point is a preset TA adjustment point which is closest to the first TA according to the first change trend; the fourth variation information is that the first variation trend is far away from a second TA adjustment point, and the second TA adjustment point is a preset TA adjustment point closest to the first TA according to the second variation trend.
Further, the taking the determined third variation information and/or fourth variation information as the TA variation information further includes:
if the first difference absolute value between the first TA and the first TA adjusting point is smaller than the second difference absolute value between the first TA and the second TA adjusting point, taking the third change information as the TA change information;
and if the first difference absolute value is larger than the second difference absolute value, taking the fourth change information as the TA change information.
Further, if "when the TA variation information has the same trend of variation and the corresponding power adjustment information is the same" between the first TA adjustment point and the second TA adjustment point, the third variation information and the fourth variation information are used as the TA variation information. In this case, the power adjustment information is monotonous in the TA intervals between the first TA adjustment point and the second TA adjustment point.
In this embodiment, the TA change information is determined according to the TA change trend, and the second uplink power is adjusted according to the power adjustment information corresponding to the TA change information.
In order to perform more fine adjustment on the uplink power, further, on the basis of the foregoing embodiments, the adjusting the second uplink power according to the determined power adjustment information to obtain the adjustment result includes:
acquiring a TA interval determined by the first TA adjusting point and the second TA adjusting point, and judging whether the second TA belongs to the TA interval;
if so, adjusting the second uplink power according to the variable quantity of the first TA relative to the second TA and the determined power adjustment information to obtain the adjustment result;
if not, adjusting the second uplink power according to the power adjustment target corresponding to the second TA adjustment point, and then adjusting the second uplink power according to the variation of the first TA relative to the second TA adjustment point and the determined power adjustment information to obtain the adjustment result.
For the results of the two above judgments: when the second TA does not belong to the TA interval, further adjusting the second uplink power according to a variation of the first TA with respect to the second TA and the determined power adjustment information to obtain the adjustment result, including:
acquiring a corresponding relation between a preset TA variation and an adjustment value for adjusting uplink power, determining a first adjustment value according to the variation of the first TA relative to the second TA and the corresponding relation, and taking the first adjustment value as the adjustment result (or taking the uplink power adjusted by the second uplink power according to the first adjustment value as the adjustment result).
In the correspondence relationship, the larger the variation of the TA, the larger the adjustment value corresponding to the variation of the TA.
When the second TA belongs to the TA interval, further, after the second uplink power is adjusted according to the power adjustment target corresponding to the second TA adjustment point, the adjusting result is obtained by adjusting the second uplink power according to the variation of the first TA with respect to the second TA adjustment point and the determined power adjustment information, including:
determining to adjust the second uplink power to a power adjustment target corresponding to a second TA adjustment point, determining a corresponding second adjustment value, determining a third adjustment value according to the variation of the first TA relative to the second TA adjustment point and the corresponding relationship, and determining an adjustment result for adjusting the second uplink power according to the second adjustment value and the third adjustment value (or taking the uplink power after the second uplink power is adjusted according to the second adjustment value and the third adjustment value as the adjustment result).
In this embodiment, by determining whether the first TA and the second TA are in the same interval, and combining the variation of the TA, the power is accurately controlled.
Specifically, in fig. 2, when "TA value reported by the terminal" < ═ near point TA setpoint "is set, that is, the terminal is in the range of" coverage area 1 ", the terminal location characteristic is" near point user "; when the ' near point TA adjusting point ' < ' TA value reported by the terminal ' < ═ near point TA adjusting point ', namely in the range of the ' coverage area 2 ', setting the user position characteristic as ' midpoint user '; and when the 'near point TA adjusting point' < 'TA value reported by the terminal', namely, the 'coverage area 3', setting the user position characteristic as 'far point user'. Referring to fig. 3 and 4, a near point power adjustment target, a middle point power adjustment target, and a far point power adjustment target are set at the preset TA adjustment points, respectively.
Fig. 5 is a schematic flowchart of the overall process based on TA uplink power control provided in this embodiment, and referring to fig. 5, the uplink power control overall includes the following steps:
the method comprises the following steps: setting a near point TA adjusting point, a middle point TA adjusting point and a far point TA adjusting point adopted by a user who executes an uplink power control function based on TA measurement in the coverage area of a wireless base station system, and setting a near point power adjusting target, a middle point power adjusting target and a far point power adjusting target;
step two: according to the initial TA measured value (second TA) of the user and the preset TA adjusting point set in the step one, the characteristics of the user at the near point, the user at the middle point and the user at the far point are judged to obtain a near point user, a user at the middle point and a user at the far point;
step three: acquiring a new user TA measured value, performing uplink power control judgment processing according to the user characteristics determined in the step two, and entering the processing of the step four if the user belongs to a near point user; if the user belongs to the 'midpoint user', the processing of the step five is carried out; if the user belongs to the remote point user, entering the processing of the step six;
step four: the processing of the step is a power control processing process of a near point user, and when the user characteristic change is judged to be close to a middle point user according to a newly acquired user TA measured value, power control adjustment of increasing trend is carried out on the user according to the middle point power adjustment target value determined in the step one;
step five: the processing of the step is a power control processing process of a 'midpoint user', wherein 1) power control adjustment of a descending trend is carried out on the user according to the near point power adjustment target value determined in the step one, when the user characteristic change is judged to be approaching to a 'near point user' according to a newly acquired user TA measurement value, and 2) when the user characteristic change is judged to be approaching to a 'far point user' according to the newly acquired user TA measurement value; wherein, 2) performing power control adjustment of a descending trend on the user according to the remote point power adjustment target value determined in the step one;
step six: the processing in the step is a power control processing process of a 'far point user', and when the characteristic change of the user is judged to be a 'middle point user' according to a newly acquired TA measurement value of the user, power control adjustment of increasing trend is carried out on the user according to the middle point power adjustment target value determined in the step one.
The method provided by the embodiment multiplexes the spatial position characteristics of the users in the coverage area of the wireless base station to design and optimize the uplink power control of the users in the wireless system, so that the uplink power control is more accurate and effective.
One specific example is provided below:
1) setting of power adjustment information
For a base station cell with a wireless signal coverage of 4km, the base station cell can be divided into three coverage areas according to the design of the invention (i.e. different preset TA adjustment points are set, and the signal coverage area is divided into different coverage areas by the preset TA adjustment points), and the division mode is as follows:
"near point region" < ═ 1km, as in "coverage region 1" in fig. 2; 1km < "midpoint area" < ═ 3km, as in "coverage area 2" in fig. 2; a 3km < "distant point region" < ═ 4km is shown as "coverage region 3" in fig. 2.
Corresponding to the boundaries of the above three "coverage areas", the methods of calculating the "near point TA setpoint", "middle point TA setpoint", and "far point TA setpoint" are (the rate of the signal is equivalent to the speed of light, and the calculation of TA is performed bi-directionally in terms of distance):
"near-point TA setpoint": (1km/300000 (km/s)). times.2 ═ 6.7. mu.s
"midpoint TA setpoint" (3km/300000 (km/s)). 2 ═ 20 μ s
"far point TA setpoint" (4km/300000 (km/s)). 2 ═ 26.7 μ s
Setting the power adjustment target values of the near point, the middle point and the far point as follows:
"near point power adjustment target" - "5 dbm
"midpoint power adjustment target" - "20 dbm
"far point power adjustment target" ═ 10dbm
2) Adjusting uplink power
Case 1 ("near user" power control):
the initial TA measurement value of the user 1 is 5 mus after the user 1 accesses the network, and the user 1 is judged to be the near point user according to the set near point TA adjusting point. Its transmitting power is 5.5 dbm;
if the new TA measured value of the user 1 is obtained to be 5.25 mu s and approaches to the middle point TA adjusting point, the coverage area of the user 1 changes to be the trend of the middle point user, and the power control improvement process is started upwards from 5.5dbm for the transmitting power of the user 1 according to the middle point power adjusting target;
case 2 ("midpoint user" power control):
the initial TA measurement value of the user 2 after the network access is 13.5 mus, and the user 2 is judged to be the middle point user according to the preset TA adjusting point. Its transmitted power is 20 dbm;
if the new TA measured value of the user 2 is obtained to be 13.4 mu s and approaches to the near point TA adjusting point, the trend that the change is the near point user in the coverage range of the user 2 is judged, and the power control descending process is carried out downwards on the transmitting power of the user 2 from 20dbm according to the near point power adjusting target;
if the new TA measured value of the user 2 is obtained to be 13.6 mus, and approaches to the far point TA adjustment point, and the trend that the coverage of the user 2 is changed to be the far point user is judged, the power control descending process is carried out downwards on the transmitting power of the user 2 from 20dbm according to the far point power adjustment target.
Case 3 ("far point user" power control):
and after the user 3 accesses the network, the initial TA measurement value is 22 mus, and the user 3 is judged to be a remote user according to the preset TA adjusting point. And the transmitting power is 11 dbm;
if the new TA measurement value of the user 3 is obtained to be 21.8 mu s and the new TA measurement value is close to the far point TA adjusting point, the trend that the change is changed to the middle point user in the coverage range of the user 3 is judged, and the power control improvement process is carried out on the transmitting power of the user 3 from 11dbm upwards according to the middle point power adjusting target.
The TA-based uplink power adjustment method according to this embodiment introduces the spatial location characteristic of the user in the coverage area of the radio base station, which is not involved in the uplink power control of the radio system user, and designs and optimizes the uplink power control of the radio system user by using the spatial location characteristic of the user in the coverage area of the radio base station, so that the uplink power control of the radio system user is more accurate and effective.
Fig. 6 is a block diagram of a structure of an uplink power adjustment apparatus based on TA according to this embodiment, and referring to fig. 6, the apparatus includes an obtaining module 601, an adjusting module 602, and a sending module 603, wherein,
an obtaining module 601, configured to obtain a first timing advance TA reported by a terminal and a second TA reported last time before the first TA;
an adjusting module 602, configured to adjust a second uplink power corresponding to the second TA according to the first TA, the second TA, and power adjustment information, to obtain an adjustment result;
a sending module 603, configured to send the adjustment result to the terminal, so that the terminal determines, according to the adjustment result, a first uplink power corresponding to the first TA;
the power adjustment information includes information for adjusting uplink power corresponding to each TA variation information.
The TA-based uplink power adjustment apparatus provided in this embodiment is suitable for the TA-based uplink power adjustment method provided in the above embodiment, and is not described herein again.
In this embodiment, power adjustment information for adjusting uplink power according to various types of TA variation information is set in advance. And determining TA change information according to the TA reported by the terminal twice, and adjusting the uplink power according to the power adjustment information corresponding to the TA change information. Because more accurate TA can be determined through measurement, the uplink power adjusted through the TA is more consistent with the network condition of the position of the user, and more accurate and effective power control is realized.
Optionally, the method further comprises determining a model, the determining module being configured to:
determining at least one preset TA adjusting point from TA corresponding to each point in a coverage area of a base station signal;
for each preset TA adjusting point, determining TA change information corresponding to the preset TA adjusting point, wherein the TA change information comprises that the TA is close to or far away from the preset TA adjusting point according to different change trends;
determining power adjustment information corresponding to each TA change information;
wherein the change trend is TA increase or TA decrease; the power adjustment information is to increase uplink power or decrease uplink power.
Optionally, the determining power adjustment information corresponding to each TA change information includes:
determining a power adjustment target corresponding to the preset TA adjustment point;
when the TA change information is first change information, if the power adjustment information is to increase the uplink power, the adjusted uplink power is smaller than the power adjustment target, and if the power adjustment information is to reduce the uplink power, the adjusted uplink power is larger than the power adjustment target, wherein the first change information comprises that the TA approaches the preset TA adjustment point with different change trends;
when the TA change information is second change information, if the power adjustment information is to increase the uplink power, the adjusted uplink power is greater than the power adjustment target, and if the power adjustment information is to decrease the uplink power, the adjusted uplink power is less than the power adjustment target, where the second change information includes that the TA is away from the preset TA adjustment point with different change trends;
and when the change trends of the TA in the TA change information are the same, the corresponding power adjustment information is the same between the adjacent preset TA adjustment points.
Optionally, the adjusting module is further configured to:
determining the change trend of the TA according to the second TA and the first TA as a first change trend;
determining third change information according to the first change trend, and/or determining fourth change information according to the second change trend, and taking the determined third change information and/or fourth change information as the TA change information, wherein the first change trend and the second change trend are opposite change trends;
determining power adjustment information corresponding to the TA change information according to the power adjustment information, and adjusting the second uplink power according to the determined power adjustment information to obtain an adjustment result;
the third change information is that a first change trend is close to a first TA adjustment point, and the first TA adjustment point is a preset TA adjustment point which is closest to the first TA according to the first change trend; the fourth variation information is that the first variation trend is far away from a second TA adjustment point, and the second TA adjustment point is a preset TA adjustment point closest to the first TA according to the second variation trend.
Optionally, the adjusting the second uplink power according to the determined power adjustment information to obtain the adjustment result includes:
acquiring a TA interval determined by the first TA adjusting point and the second TA adjusting point, and judging whether the second TA belongs to the TA interval;
if so, adjusting the second uplink power according to the variable quantity of the first TA relative to the second TA and the determined power adjustment information to obtain the adjustment result;
if not, adjusting the second uplink power according to the power adjustment target corresponding to the second TA adjustment point, and then adjusting the second uplink power according to the variation of the first TA relative to the second TA adjustment point and the determined power adjustment information to obtain the adjustment result.
Fig. 7 shows a schematic physical structure diagram of the electronic device provided in this embodiment.
Referring to fig. 7, the electronic device includes: a processor (processor)701, a communication Interface (Communications Interface)702, a memory (memory)703 and a communication bus 704, wherein the processor 701, the communication Interface 702 and the memory 703 complete communication with each other through the communication bus 704. The processor 701 may call logic instructions in the memory 703 to perform the following method: acquiring a first Time Advance (TA) reported by a terminal and a second TA reported last time before the first TA; adjusting a second uplink power corresponding to the second TA according to the first TA, the second TA and the power adjustment information to obtain an adjustment result; sending the adjustment result to the terminal, so that the terminal determines a first uplink power corresponding to the first TA according to the adjustment result; the power adjustment information includes information for adjusting uplink power corresponding to each TA variation information.
In addition, the logic instructions in the memory 703 can be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The present embodiments disclose a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, enable the computer to perform the methods provided by the above-described method embodiments, for example, comprising: acquiring a first Time Advance (TA) reported by a terminal and a second TA reported last time before the first TA; adjusting a second uplink power corresponding to the second TA according to the first TA, the second TA and the power adjustment information to obtain an adjustment result; sending the adjustment result to the terminal, so that the terminal determines a first uplink power corresponding to the first TA according to the adjustment result; the power adjustment information includes information for adjusting uplink power corresponding to each TA variation information.
The present embodiments provide a non-transitory computer readable storage medium having stored thereon a computer program, the computer program being executable by a processor to perform the method of: acquiring a first Time Advance (TA) reported by a terminal and a second TA reported last time before the first TA; adjusting a second uplink power corresponding to the second TA according to the first TA, the second TA and the power adjustment information to obtain an adjustment result; sending the adjustment result to the terminal, so that the terminal determines a first uplink power corresponding to the first TA according to the adjustment result; the power adjustment information includes information for adjusting uplink power corresponding to each TA variation information.
The above-described embodiments of the electronic device and the like are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may also be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention, and are not limited thereto; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (12)
1. A TA-based uplink power adjustment method is characterized by comprising the following steps:
acquiring a first Time Advance (TA) reported by a terminal and a second TA reported last time before the first TA;
adjusting a second uplink power corresponding to the second TA according to the first TA, the second TA and the power adjustment information to obtain an adjustment result;
sending the adjustment result to the terminal, so that the terminal determines a first uplink power corresponding to the first TA according to the adjustment result;
the power adjustment information includes information for adjusting uplink power corresponding to each TA variation information.
2. The TA-based uplink power adjustment method according to claim 1, further comprising:
determining at least one preset TA adjusting point from TA corresponding to each point in a coverage area of a base station signal;
for each preset TA adjusting point, determining TA change information corresponding to the preset TA adjusting point, wherein the TA change information comprises that the TA is close to or far away from the preset TA adjusting point according to different change trends;
determining power adjustment information corresponding to each TA change information;
wherein the change trend is TA increase or TA decrease; the power adjustment information is to increase uplink power or decrease uplink power.
3. A TA-based uplink power adjustment method according to claim 2, wherein the determining power adjustment information corresponding to each TA change information includes:
determining a power adjustment target corresponding to the preset TA adjustment point;
when the TA change information is first change information, if the power adjustment information is to increase the uplink power, the adjusted uplink power is smaller than the power adjustment target, and if the power adjustment information is to reduce the uplink power, the adjusted uplink power is larger than the power adjustment target, wherein the first change information comprises that the TA approaches the preset TA adjustment point with different change trends;
when the TA change information is second change information, if the power adjustment information is to increase the uplink power, the adjusted uplink power is greater than the power adjustment target, and if the power adjustment information is to decrease the uplink power, the adjusted uplink power is less than the power adjustment target, where the second change information includes that the TA is away from the preset TA adjustment point with different change trends;
and when the change trends of the TA in the TA change information are the same, the corresponding power adjustment information is the same between the adjacent preset TA adjustment points.
4. A TA-based uplink power adjustment method according to claim 2 or 3, wherein the adjusting a second uplink power corresponding to the second TA according to the first TA, the second TA and the power adjustment information to obtain an adjustment result includes:
determining the change trend of the TA according to the second TA and the first TA as a first change trend;
determining third change information according to the first change trend, and/or determining fourth change information according to the second change trend, and taking the determined third change information and/or fourth change information as the TA change information, wherein the first change trend and the second change trend are opposite change trends;
determining power adjustment information corresponding to the TA change information, and adjusting the second uplink power according to the determined power adjustment information to obtain an adjustment result;
the third change information is that a first change trend is close to a first TA adjustment point, and the first TA adjustment point is a preset TA adjustment point which is closest to the first TA according to the first change trend; the fourth variation information is that the first variation trend is far away from a second TA adjustment point, and the second TA adjustment point is a preset TA adjustment point closest to the first TA according to the second variation trend.
5. A TA-based uplink power adjustment method according to claim 4, wherein the adjusting the second uplink power according to the determined power adjustment information to obtain the adjustment result includes:
acquiring a TA interval determined by the first TA adjusting point and the second TA adjusting point, and judging whether the second TA belongs to the TA interval;
if so, adjusting the second uplink power according to the variable quantity of the first TA relative to the second TA and the determined power adjustment information to obtain the adjustment result;
if not, adjusting the second uplink power according to the power adjustment target corresponding to the second TA adjustment point, and then adjusting the second uplink power according to the variation of the first TA relative to the second TA adjustment point and the determined power adjustment information to obtain the adjustment result.
6. An uplink power adjustment apparatus based on TA, comprising:
an obtaining module, configured to obtain a first Timing Advance (TA) reported by a terminal and a second TA reported last before the first TA;
the adjusting module is configured to adjust a second uplink power corresponding to the second TA according to the first TA, the second TA, and the power adjustment information, so as to obtain an adjustment result;
a sending module, configured to send the adjustment result to the terminal, so that the terminal determines, according to the adjustment result, a first uplink power corresponding to the first TA;
the power adjustment information includes information for adjusting uplink power corresponding to each TA variation information.
7. The TA-based uplink power adjustment device according to claim 6, further comprising a determination module configured to:
determining at least one preset TA adjusting point from TA corresponding to each point in a coverage area of a base station signal;
for each preset TA adjusting point, determining TA change information corresponding to the preset TA adjusting point, wherein the TA change information comprises that the TA is close to or far away from the preset TA adjusting point according to different change trends;
determining power adjustment information corresponding to each TA change information;
wherein the change trend is TA increase or TA decrease; the power adjustment information is to increase uplink power or decrease uplink power.
8. A TA-based uplink power adjustment device according to claim 7, wherein said determining power adjustment information corresponding to each TA change information includes:
determining a power adjustment target corresponding to the preset TA adjustment point;
when the TA change information is first change information, if the power adjustment information is to increase the uplink power, the adjusted uplink power is smaller than the power adjustment target, and if the power adjustment information is to reduce the uplink power, the adjusted uplink power is larger than the power adjustment target, wherein the first change information comprises that the TA approaches the preset TA adjustment point with different change trends;
when the TA change information is second change information, if the power adjustment information is to increase the uplink power, the adjusted uplink power is greater than the power adjustment target, and if the power adjustment information is to decrease the uplink power, the adjusted uplink power is less than the power adjustment target, where the second change information includes that the TA is away from the preset TA adjustment point with different change trends;
and when the change trends of the TA in the TA change information are the same, the corresponding power adjustment information is the same between the adjacent preset TA adjustment points.
9. The TA-based uplink power adjustment device according to claim 7 or 8, wherein the adjustment module is further configured to:
determining the change trend of the TA according to the second TA and the first TA as a first change trend;
determining third change information according to the first change trend, and/or determining fourth change information according to the second change trend, and taking the determined third change information and/or fourth change information as the TA change information, wherein the first change trend and the second change trend are opposite change trends;
determining power adjustment information corresponding to the TA change information, and adjusting the second uplink power according to the determined power adjustment information to obtain an adjustment result;
the third change information is that a first change trend is close to a first TA adjustment point, and the first TA adjustment point is a preset TA adjustment point which is closest to the first TA according to the first change trend; the fourth variation information is that the first variation trend is far away from a second TA adjustment point, and the second TA adjustment point is a preset TA adjustment point closest to the first TA according to the second variation trend.
10. The TA-based uplink power adjustment module according to claim 9, wherein the adjusting the second uplink power according to the determined power adjustment information to obtain the adjustment result includes:
acquiring a TA interval determined by the first TA adjusting point and the second TA adjusting point, and judging whether the second TA belongs to the TA interval;
if so, adjusting the second uplink power according to the variable quantity of the first TA relative to the second TA and the determined power adjustment information to obtain the adjustment result;
if not, adjusting the second uplink power according to the power adjustment target corresponding to the second TA adjustment point, and then adjusting the second uplink power according to the variation of the first TA relative to the second TA adjustment point and the determined power adjustment information to obtain the adjustment result.
11. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements the steps of the TA based uplink power adjustment method according to claim 1 or 5.
12. A non-transitory computer readable storage medium, having a computer program stored thereon, wherein the computer program, when being executed by a processor, implements the steps of the TA-based uplink power adjustment method according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911304769.1A CN112996094B (en) | 2019-12-17 | 2019-12-17 | TA-based uplink power adjustment method and device, electronic equipment and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911304769.1A CN112996094B (en) | 2019-12-17 | 2019-12-17 | TA-based uplink power adjustment method and device, electronic equipment and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112996094A true CN112996094A (en) | 2021-06-18 |
| CN112996094B CN112996094B (en) | 2022-04-22 |
Family
ID=76343681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911304769.1A Active CN112996094B (en) | 2019-12-17 | 2019-12-17 | TA-based uplink power adjustment method and device, electronic equipment and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112996094B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114402655A (en) * | 2021-12-17 | 2022-04-26 | 北京小米移动软件有限公司 | Method and device for determining position information |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102378341A (en) * | 2011-11-17 | 2012-03-14 | 电信科学技术研究院 | Uplink power control method and device |
| CN103124428A (en) * | 2011-11-17 | 2013-05-29 | 电信科学技术研究院 | Method and device for controlling uplink power |
| US20140050205A1 (en) * | 2011-09-29 | 2014-02-20 | Lg Electronics Inc. | Method for controlling uplink transmission power and wireless device using same |
| CN103781161A (en) * | 2012-10-25 | 2014-05-07 | 中兴通讯股份有限公司 | Method, device and system used for distantly covering base station |
| US20160198415A1 (en) * | 2015-01-05 | 2016-07-07 | Fujitsu Limited | Apparatus and method for correcting transmit power based on received signal strength from a base station |
-
2019
- 2019-12-17 CN CN201911304769.1A patent/CN112996094B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140050205A1 (en) * | 2011-09-29 | 2014-02-20 | Lg Electronics Inc. | Method for controlling uplink transmission power and wireless device using same |
| CN102378341A (en) * | 2011-11-17 | 2012-03-14 | 电信科学技术研究院 | Uplink power control method and device |
| CN103124428A (en) * | 2011-11-17 | 2013-05-29 | 电信科学技术研究院 | Method and device for controlling uplink power |
| CN103781161A (en) * | 2012-10-25 | 2014-05-07 | 中兴通讯股份有限公司 | Method, device and system used for distantly covering base station |
| US20160198415A1 (en) * | 2015-01-05 | 2016-07-07 | Fujitsu Limited | Apparatus and method for correcting transmit power based on received signal strength from a base station |
Non-Patent Citations (1)
| Title |
|---|
| MITSUBISHI ELECTRIC: "S2-073219 "Self-optimization of assigned TA list from reported list of last visited TAs"", 《3GPP TSG_SA\WG2_ARCH》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114402655A (en) * | 2021-12-17 | 2022-04-26 | 北京小米移动软件有限公司 | Method and device for determining position information |
| CN114402655B (en) * | 2021-12-17 | 2024-03-05 | 北京小米移动软件有限公司 | Method and device for determining position information |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112996094B (en) | 2022-04-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10959183B2 (en) | Uplink power control method and apparatus | |
| US20190342849A1 (en) | Time Service Method, Terminal Device, and Network Device | |
| CN106255183B (en) | Adjust the method, apparatus and terminal of Wi-Fi transmission power | |
| KR101466740B1 (en) | Method of selecting bit rate and transmit power for energy-efficient transmission | |
| CN111800851A (en) | Time delay compensation method and device | |
| JP2018526935A (en) | Transmission power control method and apparatus | |
| MX2014009381A (en) | Uplink power control in coordinated multi-point wireless communication system. | |
| CN113473585A (en) | Method, apparatus and computer-readable storage medium for uplink transmit power control | |
| CN106973431B (en) | Transmission power adjusting method and terminal | |
| WO2020186441A1 (en) | Information transmission method and device, and user equipment and base station | |
| US20170289929A1 (en) | Transmission power control methods and devices | |
| WO2021139188A1 (en) | Uplink synchronization adjustment method and apparatus | |
| CN114390656A (en) | Power determination method, device, terminal and network side equipment | |
| CN112996094B (en) | TA-based uplink power adjustment method and device, electronic equipment and storage medium | |
| JP5089754B2 (en) | Mobile communication system, base station, and transmission power control method | |
| CN102316568B (en) | Closed loop power control processing method and base station | |
| CN107437963A (en) | Distributed security beam forming method and device based on feedback control | |
| CN109391337B (en) | Synchronization method, reporting method and corresponding device | |
| CN111757374B (en) | Beam management method and device | |
| US6636724B1 (en) | Method for indoor operation of a wireless telecommunication device | |
| CN104618998A (en) | Network equipment, UE (user equipment) and power adjustment method | |
| CA2622980A1 (en) | Power control in wireless communications networks during hand-over | |
| JP2002368685A (en) | Electric telecommunication network, method for adjusting maximum downlink transmission power, base station, and radio telecommunication network controller | |
| CN112994761A (en) | Beam determination method and device | |
| JPH1075210A (en) | Random access control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |