CN106507461B - Power adjustment method and device in uplink multi-user system - Google Patents
Power adjustment method and device in uplink multi-user system Download PDFInfo
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- CN106507461B CN106507461B CN201510567811.4A CN201510567811A CN106507461B CN 106507461 B CN106507461 B CN 106507461B CN 201510567811 A CN201510567811 A CN 201510567811A CN 106507461 B CN106507461 B CN 106507461B
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- 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
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- 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
- H04W52/18—TPC being performed according to specific parameters
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- 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
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
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- 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
- H04W52/18—TPC being performed according to specific parameters
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
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Abstract
The invention provides a power adjusting method and a device in an uplink multi-user system; the method comprises the following steps: screening out the user equipment which satisfies one or more of the following parameters and the predetermined conditions corresponding to the parameters: pairing probability, traffic, channel quality; and reducing the transmission power of the screened user equipment. The invention can reduce the interference between the paired user equipment by adjusting the transmitting power of the user equipment which meets the preset condition, better obtain the multi-user diversity gain, improve the throughput of the cell to the maximum extent and ensure the reliability and robustness of the wireless link transmission after the pairing.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a method and an apparatus for adjusting power in an uplink multi-user system.
Background
In a wireless communication system, in order to improve a data transmission rate and a system throughput, it is an effective scheme to adopt a MIMO (multiple-input multiple-Output) technology.
An uplink MU-MIMO (Multi-User Multi-Input and Multi-Output, Multi-User multiple-Input multiple-Output) system is characterized in that a base station selects two or more than two UEs (User equipments) to transmit data in the same time frequency resource block, V-MIMO (Virtual Multi-Input and Multi-Output, Virtual multiple-Input multiple-Output) transmission is carried out, the base station side selects and calculates UE pairs according to a certain strategy, and a plurality of UEs are scheduled to use the same wireless resource transmission, so that the purpose of increasing the system capacity is achieved.
Since signals come from different user equipments and pass through different channels, the degree of mutual interference among the user equipments is different, but for the user equipments, it is unknown whether there are other user equipments using the same time-frequency resources as the user equipments themselves, only MU-MIMO at the NodeB (base station) side will form interference among the user equipments, and the interference among the user equipments will cause the quality degradation of the channel when the paired user equipments are paired compared with when not paired.
Disclosure of Invention
The invention provides a power adjusting method and a device in an uplink multi-user system in a mobile communication network, which can reduce the interference between paired user equipment by adjusting the transmitting power of the user equipment meeting the preset conditions, better obtain multi-user diversity gain, improve the throughput of a cell to a greater extent and ensure the reliability and robustness of wireless link transmission after pairing.
In order to solve the above problems, the following technical solutions are adopted.
A power adjustment method in an uplink multi-user system comprises the following steps:
screening out the user equipment which satisfies one or more of the following parameters and the predetermined conditions corresponding to the parameters: pairing probability, traffic, channel quality;
and reducing the transmission power of the screened user equipment.
Optionally, the user equipment that filters out one or more of the following parameters that satisfy the predetermined condition corresponding to the parameter includes:
and screening out the user equipment of which the pairing probability, the flow and the channel quality all accord with the corresponding preset conditions.
Optionally, the user equipment that filters out one or more of the following parameters that satisfy the predetermined condition corresponding to the parameter includes:
counting the pairing probability, flow and channel quality of each user equipment in the cell;
respectively judging whether the pairing probability of each user equipment meets a preset condition corresponding to the pairing probability; respectively judging whether the flow of each user equipment meets a preset condition corresponding to the flow; respectively judging whether the channel quality of each user equipment meets the preset condition corresponding to the channel quality;
and screening out the user equipment of which the pairing probability, the flow and the channel quality all meet the corresponding preset conditions.
Optionally, the power adjustment method further includes:
when the pairing probability of the user equipment meets the corresponding preset condition, performing pairing probability identification on the user equipment, when the flow of the user equipment meets the corresponding preset condition, performing flow identification on the user equipment identification, and when the channel quality of the user equipment meets the corresponding preset condition, performing channel quality identification on the user equipment identification;
the screening out the user equipment of which the pairing probability, the flow and the channel quality all meet the corresponding preset conditions comprises the following steps:
screening out the user equipment which simultaneously has the pairing probability identification, the flow identification and the channel quality identification.
Optionally, the reducing the transmission power of the screened user equipment includes:
reducing the transmission power of the screened user equipment by k decibels; k is greater than 0.
Optionally, the matching probability satisfying the corresponding predetermined condition is:
the pairing probability of the user equipment is higher than a preset pairing probability threshold; alternatively, the first and second electrodes may be,
the pairing probability of the user equipment belongs to the top M of the pairing probabilities of all the user equipment in the cell, wherein M is a predetermined positive integer.
Optionally, the flow rate meeting the corresponding predetermined condition means:
the historical throughput rate of the user equipment is lower than a preset throughput rate threshold; alternatively, the first and second electrodes may be,
the historical throughput rate of the user equipment belongs to the lowest L of the pairing probabilities of all the user equipment in the cell, wherein L is a preset positive integer; alternatively, the first and second electrodes may be,
the service type of the user equipment belongs to small data packet service.
Optionally, the channel quality meeting a predetermined condition refers to:
the channel quality of the user equipment is higher than a predetermined channel quality threshold; alternatively, the first and second electrodes may be,
the channel quality of the user equipment belongs to the top N of the channel qualities of all the user equipment in the cell, and N is a predetermined positive integer.
A power adjustment device in an uplink multi-user system comprises:
the selection module is used for screening out the user equipment which satisfies one or more of the following parameters and the preset conditions corresponding to the parameters: pairing probability, traffic, channel quality;
and the power adjusting module is used for reducing the transmission power of the screened user equipment.
Optionally, the selecting module selects one or more of the following parameters that satisfy the predetermined condition corresponding to the parameter, where the selecting module refers to:
the selection module screens out the user equipment with the matching probability, the flow and the channel quality meeting the corresponding preset conditions.
Optionally, the selection module comprises:
the statistical unit is used for counting the pairing probability, the flow and the channel quality of each user equipment in the cell;
the judging unit is used for respectively judging whether the pairing probability of each user equipment meets a preset condition corresponding to the pairing probability; respectively judging whether the flow of each user equipment meets a preset condition corresponding to the flow; respectively judging whether the channel quality of each user equipment meets the preset condition corresponding to the channel quality;
and the screening unit is used for screening out the user equipment of which the pairing probability, the flow and the channel quality all meet the corresponding preset conditions.
Optionally, the determining unit is further configured to perform pairing probability identification on the user equipment when the pairing probability of the user equipment meets a corresponding predetermined condition, perform traffic identification on the user equipment identifier when the traffic of the user equipment meets the corresponding predetermined condition, and perform channel quality identification on the user equipment identifier when the channel quality of the user equipment meets the corresponding predetermined condition;
the screening unit screens out the user equipment with the pairing probability, the flow and the channel quality meeting the corresponding preset conditions, namely:
the screening unit screens out the user equipment which simultaneously has the pairing probability identification, the flow identification and the channel quality identification.
Optionally, the reducing, by the power adjustment module, the transmission power of the screened user equipment includes:
the power adjusting module reduces the transmission power of the screened user equipment by k decibels; k is greater than 0.
Optionally, the matching probability satisfying the corresponding predetermined condition means:
the pairing probability of the user equipment is higher than a preset pairing probability threshold; alternatively, the first and second electrodes may be,
the pairing probability of the user equipment belongs to the top M of the pairing probabilities of all the user equipment in the cell, wherein M is a predetermined positive integer.
Optionally, the flow rate satisfying the corresponding predetermined condition means:
the historical throughput rate of the user equipment is lower than a preset throughput rate threshold; alternatively, the first and second electrodes may be,
the historical throughput rate of the user equipment belongs to the lowest L of the pairing probabilities of all the user equipment in the cell, wherein L is a preset positive integer; alternatively, the first and second electrodes may be,
the service type of the user equipment belongs to small data packet service.
Optionally, the channel quality meeting the predetermined condition means:
the channel quality of the user equipment is higher than a predetermined channel quality threshold; alternatively, the first and second electrodes may be,
the channel quality of the user equipment belongs to the top N of the channel qualities of all the user equipment in the cell, and N is a predetermined positive integer.
The invention provides a power adjustment method and a power adjustment device in an uplink multi-user system, which reduce the interference between paired user equipment by reducing the uplink transmitting power of the user equipment with small flow, better channel quality and higher pairing probability, better obtain multi-user diversity gain and ensure the reliability and robustness of wireless link transmission after pairing.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a flowchart of a power adjustment method in an uplink multiuser system according to a first embodiment;
FIG. 2 is a flow chart of an implementation example 1;
FIG. 3 is a flow chart of an implementation example 2;
FIG. 4 is a flow chart of an implementation example 3;
fig. 5 is a schematic diagram of a power adjustment apparatus in an uplink multiuser system according to a second embodiment;
FIG. 6 is a diagram illustrating a selection module according to a second embodiment.
Detailed Description
The technical solution of the present invention will be described in more detail with reference to the accompanying drawings and examples.
It should be noted that, if not conflicting, the embodiments of the present invention and the features of the embodiments may be combined with each other within the scope of protection of the present invention. Additionally, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
An embodiment one, a method and an apparatus for adjusting power in an uplink multi-user system, as shown in fig. 1, includes:
s110, screening out user equipment which satisfies one or more of the following parameters and predetermined conditions corresponding to the parameters: pairing probability, traffic, channel quality;
and S120, reducing the transmitting power of the screened user equipment.
In this embodiment, the pairing probability, the traffic, and the channel quality each have a corresponding predetermined condition.
Optionally, in S110, the user equipment whose pairing probability, traffic and channel quality all meet the corresponding predetermined conditions is screened out.
In other alternatives, only the user equipment with any one or any two of the pairing probability, the traffic and the channel quality meeting the corresponding predetermined condition may be screened out.
Optionally, step S120 includes:
and reducing the transmission power of the screened user equipment by k dB (decibel), wherein k is greater than 0.
In an alternative embodiment of this alternative, k may be, but is not limited to, 1 or 4.
In an alternative of this alternative, step S110 may include:
101. counting the pairing probability, flow and channel quality of each user equipment in the cell;
102. respectively judging whether the pairing probability of each user equipment meets a preset condition corresponding to the pairing probability; respectively judging whether the flow of each user equipment meets a preset condition corresponding to the flow; respectively judging whether the channel quality of each user equipment meets the preset condition corresponding to the channel quality;
103. and screening out the user equipment of which the pairing probability, the flow and the channel quality all meet the corresponding preset conditions.
In step 102 of this alternative, after the determination, the parameter may be identified for the user equipment whose certain parameter meets the corresponding predetermined condition, for example, when the pairing probability meets the corresponding predetermined condition, the pairing probability identification is performed for the user equipment identifier, when the traffic meets the corresponding predetermined condition, the traffic identification is performed for the user equipment identifier, and when the channel quality meets the corresponding predetermined condition, the channel quality identification is performed for the user equipment identifier. Accordingly, step 103 may comprise: screening out the user equipment which simultaneously has the pairing probability identification, the flow identification and the channel quality identification.
Optionally, the matching probability satisfying the corresponding predetermined condition means:
the pairing probability of the user equipment is higher than a preset pairing probability threshold; alternatively, the first and second electrodes may be,
the pairing probability of the user equipment belongs to the highest M of the pairing probabilities of all the user equipment in the cell, wherein M is a predetermined positive integer.
When the predetermined condition is that the pairing probability of the user equipment belongs to the highest M of the pairing probabilities of all the user equipment in the cell, assuming that M is 10, after the pairing probabilities of all the user equipment in the cell are ranked from high to low, the pairing probabilities located in the first name to the tenth name all meet the predetermined condition. Of course, the predetermined condition may also be modified to "the user equipment whose pairing probability of the user equipment exceeds more than other X% of the cell" or the like, and the predetermined condition is to find out those user equipment whose pairing probability is higher in the cell.
In the alternative, after the user equipment is accessed to the cell, the pairing probability of the user equipment is counted, and the number of times that each user equipment participates in pairing is mainly related.
In this alternative, the pairing probability of each user equipment in a period may also be periodically counted; it is also possible to start counting the pairing probability of each user equipment for a predetermined length of time period after being triggered (e.g. receiving a counting instruction).
Optionally, the flow rate satisfying the corresponding predetermined condition means:
the historical throughput rate of the user equipment is lower than a preset throughput rate threshold; alternatively, the first and second electrodes may be,
the historical throughput rate of the user equipment belongs to the lowest L of the pairing probabilities of all the user equipment in the cell, wherein L is a preset positive integer; alternatively, the first and second electrodes may be,
the service type of the user equipment belongs to small data packet service.
Wherein L may be the same as or different from M.
When the predetermined condition is that the historical throughput rate of the user equipment belongs to the lowest L of the pairing probabilities of all the user equipments in the cell, the predetermined condition may also be modified to "the historical throughput rate of the user equipment is lower than that of the other user equipments of more than Z% in the cell" or the like, and the predetermined condition is to find out those user equipments whose historical throughput rate is lower in the cell.
In this alternative, which service types belong to the small data packet service may be specified or agreed in advance, or determined according to standards, experience, and the like; or using the Service with the QCI (Quality of Service Class Identifier) value smaller than the preset threshold as the small data packet Service.
In the alternative scheme, the flow size expected to be needed by the user equipment is known by counting the historical throughput rate of the user equipment or identifying the service type of the user equipment; the service type of the user equipment is sometimes an obvious identifier, because the 23.203 protocol clearly defines the corresponding service type for some QCI services, the service type can be clearly identified through the QCI, for example, a voice service with QCI of 1 is an explicit small data packet service, and the flow of the user equipment can be judged to be small; besides the service with definite QCI, the user equipment with small historical throughput rate can also be judged to have small flow.
In this alternative, the historical throughput rate of the user equipment may be counted from the time the user equipment accesses the cell; the historical throughput rate of each user equipment in a period can be counted periodically; the historical throughput rate of each user equipment can also be counted in a time period with a preset length after being triggered (such as receiving a counting instruction).
Optionally, the channel quality meeting the predetermined condition means:
the channel quality of the user equipment is higher than a predetermined channel quality threshold; alternatively, the first and second electrodes may be,
the channel quality of the user equipment belongs to the best N of the channel qualities of all the user equipment in the cell, wherein N is a predetermined positive integer.
Wherein N may be the same as or different from M, and may be the same as or different from L.
When the predetermined condition is that the channel quality of the user equipment belongs to the best N of the channel qualities of all the user equipments in the cell, the predetermined condition may also be modified to "the channel quality of the user equipment exceeds more than Y% of other user equipments in the cell" or the like, the predetermined condition being to find out those user equipments whose channel quality is higher in the cell.
In addition to the pairing probability of the user equipment and the historical throughput rate of the user equipment or the service type of the user equipment, the channel quality of the user equipment can also be used as a condition for selecting the user equipment, the channel quality of the user equipment directly influences the condition that the user equipment occupies resources, and on the premise of equal service volume, the better the channel quality is, the lower the resource occupancy rate is.
A direct influence of the uplink user equipment on reducing the transmission power is channel quality reduction, because the transmission power is reduced, and on the premise of the same path loss and Interference, the SINR (Single to Interference plus noise ratio) of the user equipment is correspondingly reduced, the channel quality of the corresponding user equipment is reduced, and further the resource occupancy rate is improved, but for the uplink MU system, the transmission power of the user equipment is reduced, the Interference between the user equipment can be reduced, and the demodulation performance of the user equipment pairing is improved, for small data packet services, a significant characteristic is that the data volume is small, i.e. the traffic volume of the service is small, even if the channel quality is reduced, a lot of resources do not need to be expanded, for the uplink MU system, the Interference between the user equipment when the user equipment is paired can be reduced by reducing the transmission power of the user equipment, thereby improving the throughput of the cell to the maximum extent.
In addition, when the flow and the channel quality or the three parameters all satisfy the corresponding predetermined conditions in step S110, it means that for the user equipment of the small packet service type, the user equipment with better channel quality can be selected from the user equipment to reduce the transmission power, so that after the transmission power is reduced, the amplitude of resource expansion is not large, and more resources can be saved to schedule to other user equipments.
In this alternative, the channel quality of the user equipment may be counted from the time the user equipment accesses the cell; the channel quality of each user equipment in a period can be periodically counted; it is also possible to start counting the channel quality of each user equipment for a predetermined length of time period after being triggered (e.g. receiving a counting instruction).
The present embodiment is illustrated below with three embodiments.
The implementation example 1 refers to FIG. 2, and comprises the following steps 201-208:
201. and counting the pairing probability and the channel quality of the user equipment.
202. Determining whether to select historical throughput rate for statistics, and if so, performing step 203; otherwise, go to step 204.
203. Counting the historical throughput rate of the user equipment; step 205 is performed.
204. Identifying the service type of the user equipment; step 205 is performed.
At any time before step 205 (including before starting statistics), the threshold corresponding to each parameter may also be determined: if the pairing probability threshold judgment is used, determining a pairing probability threshold; if the historical throughput rate threshold judgment is used, determining the historical throughput rate threshold; if a channel quality threshold is used, a channel quality threshold is determined.
205. And carrying out service identification on the equipment of which the historical throughput rate is lower than a corresponding threshold or the service type belongs to the small-flow service.
206. And identifying the pairing probability of the user equipment with the pairing probability exceeding the corresponding threshold or the M user equipment with the highest pairing probability in the front of the cell.
207. And carrying out channel quality identification on the user equipment with the channel quality exceeding the corresponding threshold or the first N channels with the highest quality in the cell.
205-207 can be arranged randomly and can be executed in parallel.
208. And selecting the user equipment with 3 identifiers at the same time, and reducing the transmission power of the user equipment.
Example 2, referring to fig. 3, includes steps 301 to 307:
step 301: and counting the pairing probability of the user equipment.
Step 302: and counting the historical throughput rate of the user equipment.
Step 303: and counting the channel quality of the user equipment.
Step 304: and selecting the first 10 user equipment with the highest pairing probability in all the user equipment in the cell, and identifying the pairing probability of the selected 10 user equipment to meet the requirement.
Step 305: and selecting 10 user equipment with the minimum historical throughput rate from all the user equipment in the cell, and identifying the historical throughput rate of the selected 10 user equipment to meet the requirement.
Step 306: and selecting the 10 user equipment with the best channel quality from all the user equipment in the cell, and identifying the channel quality meeting the requirement of the selected 10 user equipment.
Step 307: and selecting the user equipment with 3 identifiers at the same time, and reducing the transmission power of the user equipment.
In steps 301 to 306, other execution orders can be set arbitrarily or in parallel as long as it is ensured that step 301 is executed before 304, step 302 is executed before 305, and step 303 is executed before 306.
The implementation example 3, as shown in fig. 4, includes steps 401 to 409:
step 401: a pairing probability threshold for the user equipment is determined.
Step 402: a channel quality threshold for the user equipment is determined.
Step 403: and counting the pairing probability of the user equipment.
Step 404: the user equipment selecting the small data packet service according to the QCI, for example: and selecting the user equipment of the QCI 1.
Step 405: and counting the channel quality of the user equipment.
Step 406: and selecting the user equipment with the pairing probability exceeding the pairing probability threshold, and identifying the pairing probability of the selected user equipment to meet the requirement.
Step 407: for the user equipment selected in 404, the user service attribute is identified to meet the requirement.
Step 408: and selecting the user equipment with the channel quality exceeding the pairing probability threshold, and identifying the user equipment with the channel quality meeting the requirement.
Step 409: and selecting the user equipment with 3 identifiers at the same time, and reducing the transmission power of the user equipment.
In steps 401 to 408, as long as it is ensured that steps 401 and 403 are both executed before 406, steps 402 and 405 are both executed before 405, and steps 404 are executed before 407, other execution orders can be set arbitrarily or in parallel.
An embodiment two, a power adjustment apparatus in an uplink multi-user system, as shown in fig. 5, includes:
a selecting module 51, configured to screen out user equipments whose one or more of the following parameters satisfy a predetermined condition corresponding to the parameter: pairing probability, traffic, channel quality;
and a power adjusting module 52, configured to reduce the transmission power of the screened ue.
Optionally, the selecting module 51 selects one or more of the following parameters that satisfy the predetermined condition corresponding to the parameter, where the selecting module refers to:
the selection module 51 screens out the user equipments whose pairing probability, traffic and channel quality all meet the corresponding predetermined conditions.
Optionally, as shown in fig. 6, the selecting module 51 includes:
a counting unit 511, configured to count pairing probability, traffic, and channel quality of each user equipment in a cell;
a determining unit 512, configured to respectively determine whether the pairing probability of each user equipment meets a predetermined condition corresponding to the pairing probability; respectively judging whether the flow of each user equipment meets a preset condition corresponding to the flow; respectively judging whether the channel quality of each user equipment meets the preset condition corresponding to the channel quality;
a screening unit 513 is configured to screen out the user equipment whose pairing probability, traffic and channel quality all satisfy corresponding predetermined conditions.
Optionally, the determining unit 512 is further configured to perform pairing probability identification on the user equipment when the pairing probability of the user equipment meets a corresponding predetermined condition, perform traffic identification on the user equipment identifier when the traffic of the user equipment meets the corresponding predetermined condition, and perform channel quality identification on the user equipment identifier when the channel quality of the user equipment meets the corresponding predetermined condition;
the screening unit 513 screens out the user equipment whose pairing probability, traffic and channel quality all satisfy the corresponding predetermined conditions, that is:
the screening unit 513 screens out the user equipment having the pairing probability identifier, the traffic identifier and the channel quality identifier at the same time.
Optionally, the reducing, by the power adjusting module 52, the transmission power of the screened user equipment is:
the power adjusting module 52 reduces the transmission power of the screened ue by k decibels, where k is greater than 0.
In an alternative embodiment of this alternative, k may be, but is not limited to, 1 or 4.
Optionally, the matching probability satisfying the corresponding predetermined condition means:
the pairing probability of the user equipment is higher than a preset pairing probability threshold; alternatively, the first and second electrodes may be,
the pairing probability of the user equipment belongs to the top M of the pairing probabilities of all the user equipment in the cell, wherein M is a predetermined positive integer.
Optionally, the flow rate satisfying the corresponding predetermined condition means:
the historical throughput rate of the user equipment is lower than a preset throughput rate threshold; alternatively, the first and second electrodes may be,
the historical throughput rate of the user equipment belongs to the lowest L of the pairing probabilities of all the user equipment in the cell, wherein L is a preset positive integer; alternatively, the first and second electrodes may be,
the service type of the user equipment belongs to small data packet service.
L and M may be the same or different.
Optionally, the channel quality meeting the predetermined condition means:
the channel quality of the user equipment is higher than a predetermined channel quality threshold; alternatively, the first and second electrodes may be,
the channel quality of the user equipment belongs to the top N of the channel qualities of all the user equipment in the cell, and N is a predetermined positive integer.
N and M may be the same or different, and N and L may be the same or different.
For further details, reference may be made to embodiment one.
It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing the relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a magnetic or optical disk, and the like. Alternatively, all or part of the steps of the above embodiments may be implemented using one or more integrated circuits. Accordingly, each module/unit in the above embodiments may be implemented in the form of hardware, and may also be implemented in the form of a software functional module. The present invention is not limited to any specific form of combination of hardware and software.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (12)
1. A method for adjusting power in an uplink multi-user system is characterized by comprising the following steps:
screening out the user equipment which satisfies one or more of the following parameters and the predetermined conditions corresponding to the parameters: pairing probability, traffic, channel quality;
reducing the transmitting power of the screened user equipment;
the user equipment screened out one or more of the following parameters which meet the predetermined condition corresponding to the parameter comprises:
counting the pairing probability, flow and channel quality of each user equipment in the cell;
respectively judging whether the pairing probability of each user equipment meets a preset condition corresponding to the pairing probability; respectively judging whether the flow of each user equipment meets a preset condition corresponding to the flow; respectively judging whether the channel quality of each user equipment meets the preset condition corresponding to the channel quality;
and screening out the user equipment of which the pairing probability, the flow and the channel quality all meet the corresponding preset conditions.
2. The power adjustment method of claim 1, further comprising:
when the pairing probability of the user equipment meets the corresponding preset condition, performing pairing probability identification on the user equipment, when the flow of the user equipment meets the corresponding preset condition, performing flow identification on the user equipment identification, and when the channel quality of the user equipment meets the corresponding preset condition, performing channel quality identification on the user equipment identification;
the screening out the user equipment of which the pairing probability, the flow and the channel quality all meet the corresponding preset conditions comprises the following steps:
screening out the user equipment which simultaneously has the pairing probability identification, the flow identification and the channel quality identification.
3. The power adjustment method of claim 1, wherein the reducing the transmission power of the screened out user equipment comprises:
reducing the transmission power of the screened user equipment by k decibels; k is greater than 0.
4. The power adjustment method according to any one of claims 1 to 3, wherein the matching probability satisfying the corresponding predetermined condition is:
the pairing probability of the user equipment is higher than a preset pairing probability threshold; alternatively, the first and second electrodes may be,
the pairing probability of the user equipment belongs to the top M of the pairing probabilities of all the user equipment in the cell, wherein M is a predetermined positive integer.
5. The power adjustment method according to any one of claims 1 to 3, wherein the flow rate satisfying the corresponding predetermined condition is:
the historical throughput rate of the user equipment is lower than a preset throughput rate threshold; alternatively, the first and second electrodes may be,
the historical throughput rates of the user equipment belong to the lowest L of the historical throughput rates of all the user equipment in the cell, wherein L is a preset positive integer; alternatively, the first and second electrodes may be,
the service type of the user equipment belongs to small data packet service.
6. The power adjustment method according to any one of claims 1 to 3, wherein the condition that the channel quality meets the predetermined condition is:
the channel quality of the user equipment is higher than a predetermined channel quality threshold; alternatively, the first and second electrodes may be,
the channel quality of the user equipment belongs to the top N of the channel qualities of all the user equipment in the cell, and N is a predetermined positive integer.
7. A power adjustment apparatus in an uplink multiuser system, comprising:
the selection module is used for screening out the user equipment which satisfies one or more of the following parameters and the preset conditions corresponding to the parameters: pairing probability, traffic, channel quality;
the power adjusting module is used for reducing the transmitting power of the screened user equipment;
the selection module comprises:
the statistical unit is used for counting the pairing probability, the flow and the channel quality of each user equipment in the cell;
the judging unit is used for respectively judging whether the pairing probability of each user equipment meets a preset condition corresponding to the pairing probability; respectively judging whether the flow of each user equipment meets a preset condition corresponding to the flow; respectively judging whether the channel quality of each user equipment meets the preset condition corresponding to the channel quality;
and the screening unit is used for screening out the user equipment of which the pairing probability, the flow and the channel quality all meet the corresponding preset conditions.
8. The power regulation device of claim 7, wherein:
the judging unit is also used for identifying the pairing probability of the user equipment when the pairing probability of the user equipment meets the corresponding preset condition, identifying the flow of the user equipment when the flow of the user equipment meets the corresponding preset condition, and identifying the channel quality of the user equipment when the channel quality of the user equipment meets the corresponding preset condition;
the screening unit screens out the user equipment with the pairing probability, the flow and the channel quality meeting the corresponding preset conditions, namely:
the screening unit screens out the user equipment which simultaneously has the pairing probability identification, the flow identification and the channel quality identification.
9. The power adjustment apparatus of claim 7, wherein the power adjustment module reduces the transmission power of the screened ue by:
the power adjusting module reduces the transmission power of the screened user equipment by k decibels; k is greater than 0.
10. The power adjustment device according to any one of claims 7 to 9, wherein the pairing probability satisfying the corresponding predetermined condition is:
the pairing probability of the user equipment is higher than a preset pairing probability threshold; alternatively, the first and second electrodes may be,
the pairing probability of the user equipment belongs to the top M of the pairing probabilities of all the user equipment in the cell, wherein M is a predetermined positive integer.
11. The power conditioning device according to any one of claims 7 to 9, wherein the flow rate satisfying the corresponding predetermined condition is:
the historical throughput rate of the user equipment is lower than a preset throughput rate threshold; alternatively, the first and second electrodes may be,
the historical throughput rates of the user equipment belong to the lowest L of the historical throughput rates of all the user equipment in the cell, wherein L is a preset positive integer; alternatively, the first and second electrodes may be,
the service type of the user equipment belongs to small data packet service.
12. The power adjustment device as claimed in any one of claims 7 to 9, wherein the channel quality meeting the predetermined condition is:
the channel quality of the user equipment is higher than a predetermined channel quality threshold; alternatively, the first and second electrodes may be,
the channel quality of the user equipment belongs to the top N of the channel qualities of all the user equipment in the cell, and N is a predetermined positive integer.
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| CN201510567811.4A CN106507461B (en) | 2015-09-08 | 2015-09-08 | Power adjustment method and device in uplink multi-user system |
| PCT/CN2016/081026 WO2017041497A1 (en) | 2015-09-08 | 2016-05-04 | Power adjustment method and device for uplink multi-user system |
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| US20200107265A1 (en) * | 2018-09-28 | 2020-04-02 | Mediatek Inc. | UE Power Consumption Characteristics and Adaptation to Traffic |
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| CN101577960A (en) * | 2008-05-06 | 2009-11-11 | ***通信集团公司 | Method and device for adjusting power |
| CN103999513A (en) * | 2011-12-23 | 2014-08-20 | 瑞典爱立信有限公司 | Uplink power control for MU-MIMO |
| CN104284408A (en) * | 2013-07-02 | 2015-01-14 | 华为技术有限公司 | Calibration method for uplink sending power and associated equipment and system thereof |
| CN104412674A (en) * | 2012-07-06 | 2015-03-11 | 瑞典爱立信有限公司 | Methods and nodes for multiple user mimo scheduling and power control |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101577960A (en) * | 2008-05-06 | 2009-11-11 | ***通信集团公司 | Method and device for adjusting power |
| CN103999513A (en) * | 2011-12-23 | 2014-08-20 | 瑞典爱立信有限公司 | Uplink power control for MU-MIMO |
| CN104412674A (en) * | 2012-07-06 | 2015-03-11 | 瑞典爱立信有限公司 | Methods and nodes for multiple user mimo scheduling and power control |
| CN104284408A (en) * | 2013-07-02 | 2015-01-14 | 华为技术有限公司 | Calibration method for uplink sending power and associated equipment and system thereof |
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