CN114126026B - Resource block allocation method and device - Google Patents

Resource block allocation method and device Download PDF

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Publication number
CN114126026B
CN114126026B CN202111372287.7A CN202111372287A CN114126026B CN 114126026 B CN114126026 B CN 114126026B CN 202111372287 A CN202111372287 A CN 202111372287A CN 114126026 B CN114126026 B CN 114126026B
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user equipment
ith user
base station
resource block
target base
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CN114126026A (en
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周世军
冯伟
颜志凌
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CICT Mobile Communication Technology Co Ltd
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CICT Mobile Communication Technology Co Ltd
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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
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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

Abstract

The invention provides a resource block allocation method and a device, wherein the method comprises the following steps: for the ith user equipment in a queue to be scheduled, acquiring the transmission power of a resource block corresponding to the ith user equipment based on the distance between the ith user equipment and a target base station; and under the condition that the product of the transmission power of the resource block corresponding to the ith user equipment and the number of the resource blocks to be scheduled is larger than the current power to be allocated to the target base station, acquiring the number of the resource blocks allocated to the ith user equipment based on the current power to be allocated to the target base station and the transmission power of the resource block corresponding to the ith user equipment. The resource block allocation method and the device provided by the invention can realize more reasonable allocation of resources, can avoid the situation that the transmission efficiency of the edge user equipment is lower due to the fact that the traditional resource allocation method configures the same resource block for each user equipment, can realize the maximum utilization rate of the base station power, and are more energy-saving.

Description

Resource block allocation method and device
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for allocating resource blocks.
Background
The downlink power control of the base station is mainly implemented in a static configuration manner, that is, firstly, the transmission power of a synchronization Signal block (Synchronization Signal block, SSB) channel, a physical downlink control channel (Physical Downlink Control Channel, PDCCH), a demodulation Reference Signal (Demodulation Reference Singal, DMRS) channel and a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) DMRS, that is, the power required by Resource Elements (REs) of each Reference Signal (RS) for transmitting the synchronization Signal and the traffic channel is determined according to the coverage requirement; and then fixing the power of RE configured for transmitting other signals according to the maximum transmission power of the base station. The downlink power control is carried out in the static configuration mode, the implementation is simpler, and the interference to the adjacent cells can be controlled to a certain extent while the coverage requirement is met. However, the power of the UE configuration at the edge of the base station may be too low, which may result in a low transmission efficiency, and the resource configuration may be unreasonable.
Disclosure of Invention
The invention provides a resource block allocation method and a resource block allocation device, which are used for solving the defect of unreasonable resource allocation in the prior art and realizing more efficient resource allocation.
The invention provides a resource block allocation method, which comprises the following steps:
for an ith user equipment in a queue to be scheduled, acquiring the transmission power of a resource block corresponding to the ith user equipment based on the distance between the ith user equipment and a target base station;
and under the condition that the product of the sending power of the resource block corresponding to the ith user equipment and the number of the resource blocks to be scheduled is larger than the current power to be allocated to the target base station, obtaining the number of the resource blocks allocated to the ith user equipment based on the current power to be allocated to the target base station and the sending power of the resource block corresponding to the ith user equipment.
The invention provides a resource block allocation method, wherein for an ith user equipment in a queue to be scheduled, before acquiring the transmission power of a resource block corresponding to the ith user equipment based on the distance between the ith user equipment and a target base station, the method further comprises:
and acquiring the distance between the ith user equipment and the target base station based on the positioning reference signal of the ith user equipment.
The invention provides a resource block allocation method, which is based on the distance between the ith user equipment and a target base station, and specifically comprises the following steps:
Determining the type of the ith user equipment based on the distance between the ith user equipment and the target base station;
acquiring energy of resource elements of a physical downlink shared channel corresponding to the ith user equipment based on the type of the ith user equipment and the distance between the ith user equipment and the target base station;
acquiring the transmission power of a resource block corresponding to the ith user equipment based on the energy of the resource element of the physical downlink shared channel corresponding to the ith user equipment;
the types of the user equipment comprise a central user and an edge user.
The invention provides a resource block allocation method, which is based on the distance between the ith user equipment and the target base station, and specifically comprises the following steps:
and determining the type of the ith user equipment as an edge user under the condition that the distance between the ith user equipment and the target base station is larger than a target threshold value.
The invention provides a resource block allocation method, which is based on the energy of resource elements of a physical downlink shared channel corresponding to an ith user equipment, and specifically comprises the steps of:
And under the condition that the ith user equipment does not have a demodulation reference signal symbol, acquiring the transmission power of a resource block corresponding to the ith user equipment according to the energy of the resource element of the physical downlink shared channel corresponding to the ith user equipment.
The invention provides a resource block allocation method, which is based on the energy of resource elements of a physical downlink shared channel corresponding to an ith user equipment, and obtains the transmission power of the resource block corresponding to the ith user equipment, and specifically comprises the following steps:
and under the condition that the ith user equipment does not have a demodulation reference signal symbol, acquiring the transmission power of the resource block corresponding to the ith user equipment based on the energy of the resource elements of the physical downlink shared channel corresponding to the ith user equipment, the duty ratio of the demodulation reference signal in the demodulation reference signal symbol, the duty ratio of the physical downlink shared channel in the demodulation reference signal symbol, the port number of the demodulation reference signal and the energy of the resource elements of each port of the demodulation reference signal.
The invention also provides a resource block allocation device, which comprises:
the power acquisition module is used for acquiring the transmission power of a resource block corresponding to the ith user equipment based on the distance between the ith user equipment and a target base station for the ith user equipment in a queue to be scheduled;
The number acquisition module is configured to acquire, when a product of a transmission power of a resource block corresponding to the ith user equipment and a number of resource blocks to be scheduled is greater than a current power to be allocated to the target base station, a number of resource blocks allocated to the ith user equipment based on the current power to be allocated to the target base station and the transmission power of the resource block corresponding to the ith user equipment.
The invention also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of any of the resource block allocation methods described above when executing the program.
The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the resource block allocation method as described in any of the above.
The invention also provides a computer program product comprising a computer program which when executed by a processor performs the steps of a resource block allocation method as described in any one of the above.
According to the resource block allocation method and device provided by the invention, the transmission power of the resource block corresponding to the user equipment is obtained based on the distance between the user equipment and the target base station in the queue to be scheduled, under the condition that the product of the transmission power of the resource block corresponding to the user equipment and the number of the resource blocks to be scheduled is larger than the current power to be allocated to the target base station, the number of the resource blocks allocated to the user equipment is obtained based on the current power to be allocated to the target base station and the transmission power of the resource block corresponding to the user equipment, on the basis of combining static allocation and semi-static allocation, the scheme of maximum power limitation is considered during resource allocation, the realization is very simple, the problem of unreasonable resource allocation can be solved more flexibly, the more reasonable resource allocation can be realized, the power of a user data channel is allocated through dynamic power allocation, the situation that the transmission power of the same resource block is allocated to each user equipment by the traditional resource allocation method, the transmission efficiency of the edge user equipment is lower can be avoided, the total transmission power allocated to the user equipment is not more than the total transmission power of the base station and the target transmission power of the user equipment is regulated to the target modulation and the coding strategy (Modulation and Coding Scheme), the resource allocation is more reasonable, the energy saving rate can be realized according to the resource allocation level is realized, and the maximum resource allocation is more reasonable, and the requirement is realized under the requirement is realized.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a resource block allocation method provided in the present invention;
fig. 2 is a second flowchart of a resource block allocation method according to the present invention;
fig. 3 is a schematic structural diagram of a resource block allocation device provided by the present invention;
fig. 4 is a schematic structural diagram of an electronic device provided by the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of embodiments of the present invention, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance and not order.
In describing embodiments of the present invention, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in embodiments of the present invention will be understood in detail by those of ordinary skill in the art.
The resource block allocation method and apparatus provided by the present invention are described below with reference to fig. 1 to 4.
Fig. 1 is a schematic flow chart of a resource block allocation method provided in the present application. The resource block allocation method according to the embodiment of the present application is described below with reference to fig. 1. As shown in fig. 1, the method includes: step 101, for the ith user equipment in the queue to be scheduled, acquiring the transmission power of the resource block corresponding to the ith user equipment based on the distance between the ith user equipment and the target base station.
Specifically, the execution body of the resource block allocation method provided by the embodiment of the invention is a resource block allocation device. The resource block allocation method provided by the embodiment of the invention is suitable for the base station, in particular for 5G small stations such as pico stations. The base stations may include, but are not limited to, 4G base stations and 5G base stations.
The resource block allocation device sequentially executes the resource block allocation method provided by the application on each UE from the 1 st UE based on the sequence of the UEs in the queue to be scheduled until the resource block allocation is completed on all the UEs in the queue to be scheduled, or after the resource block allocation is performed on the current UE, the power to be allocated of the target base station is smaller than the transmission power of the resource block corresponding to the next UE.
The distances between the UE and the target base station may be different, and the power of the target base station for transmitting the resource block to the UE (i.e., the transmission power of the resource block corresponding to the UE) may also be different, where the transmission power of the resource block corresponding to the UE farther from the target base station is greater than the transmission power of the resource block corresponding to the UE nearer to the target base station.
For the ith UE (1. Ltoreq.i.ltoreq.N) in the queue to be scheduled, the transmission power P of the resource block corresponding to the UE can be obtained based on the distance between the UE and the target base station according to the first model RB . Wherein N is the number of UEs in the queue to be scheduled.
The first model may be a model for obtaining a transmission power of a single resource block, and specifically is used for mapping a relationship between a distance between a UE and a base station and a power of the base station transmitting the resource block to the UE. The first model may be pre-established according to mobile communication standards such as 4G or 5G, and parameters such as bandwidth, coverage requirements, and maximum transmit power limit of the base station.
The embodiment of the present invention is not particularly limited as to the specific form of the first model.
Optionally, the transmission power of the resource block corresponding to the UE may be the minimum power or the optimal power for ensuring the data transmission efficiency between the target base station and the UE.
Step 102, acquiring the number of resource blocks allocated to the ith user equipment based on the current power to be allocated by the target base station and the transmission power of the resource block corresponding to the ith user equipment when the product of the transmission power of the resource block corresponding to the ith user equipment and the number of the resource blocks to be scheduled is larger than the current power to be allocated by the target base station.
Specifically, the target base station currently waits for the allocated power P remain The total transmission power of the SSB channel, the total transmission power of the channel state information reference signal (Channel State Information Reference Signal, CSIRS) channel, the total transmission power of the PDSCH, the total transmission power of PDSCH DMRS, and the remaining transmission power after the total transmission power of the resource blocks allocated to the 1 st to (i-1) th UEs of the queue to be scheduled by the target base station are subtracted from the total transmission power of the target base station.
Acquiring the transmission power P of a resource block corresponding to the ith UE RB Then, it can be determined whether the theoretical total transmission power of the resource block corresponding to the ith UE exceeds the targetThe power Pr to be allocated currently by the base station emain 。
The theoretical total transmission power of the resource block corresponding to the ith UE is equal to the transmission power P of the resource block corresponding to the ith UE RB Number n of resource blocks scheduled (i.e., allocated) to the ith UE with the target base station RB (i.e., the number of resource blocks to be scheduled corresponding to the ith UE).
At P remain ≥n RB ·P RB Description P in the case of (1) remain Can satisfy the requirement of n scheduling to the ith UE RB The target base station can schedule n to the ith UE by using the resource blocks RB With P resource blocks, i.e. target base station RB Transmitting n to the ith UE RB And resource blocks.
At P remain ＜n RB ·P RB Description P in the case of (1) remain Unsatisfied with scheduling n to the ith UE RB The number of resource blocks actually allocated to the ith UE by the target base station can be obtained by the following formula
It will be appreciated that the number of components,is to obtain P remain And P RB After the quotient, the product is rounded down again.
Obtaining the number of the resource blocks allocated to the ith user equipment, and allocating the resource blocks to the ith user equipment by the target base station based on the number of the resource blocks allocated to the ith user equipment and the transmission power of the resource blocks corresponding to the ith user equipment.
Specifically, the target base station may be a target base stationAnd resource blocks.
It will be appreciated that if P remain ＜P RB Description P remain If the scheduling of 1 resource block to the ith UE is not satisfied, the allocation of resource blocks to the ith to nth UEs may be stopped, and the allocation of resource blocks may be ended.
According to the embodiment of the invention, the transmission power of the resource block corresponding to the user equipment is obtained based on the distance between the user equipment and the target base station in the queue to be scheduled, under the condition that the product of the transmission power of the resource block corresponding to the user equipment and the number of the resource blocks to be scheduled is larger than the current power to be allocated to the target base station, the number of the resource blocks allocated to the user equipment is obtained based on the current power to be allocated to the target base station and the transmission power of the resource block corresponding to the user equipment, on the basis of combining static allocation and semi-static allocation, the scheme of maximum power limitation is considered during resource allocation, the realization is very simple, the problem of unreasonable resource allocation can be solved more flexibly, the more reasonable resource allocation can be realized, the transmission power of the same resource blocks can be allocated to each user equipment by dynamic power allocation configuration, the situation that the transmission efficiency of the edge user equipment is lower can be caused, the total transmission power of the resource blocks allocated to the user equipment is not exceeding the total transmission power of the base station and the maximum power allocation level of the user equipment under the condition of Modulation and coding strategy (Modulation and CodingScheme, MCS) can be realized, and the energy saving and the resource allocation can be more reasonably realized according to the requirements.
Based on the foregoing any embodiment, for the ith user equipment in the queue to be scheduled, before obtaining the transmission power of the resource block corresponding to the ith user equipment based on the distance between the ith user equipment and the target base station, the method further includes: and acquiring the distance between the ith user equipment and the target base station based on the positioning reference signal of the ith user equipment.
Specifically, the precise position of the i-th UE may be precisely determined based on the positioning reference signal (PositioningReference Signal, PRS) of the i-th UE, i.e. the geographic coordinates (x, y, z) of the i-th UE are acquired.
Knowing the geographical coordinates (x ', y', z ') of the target base station, the distance D between the ith UE and the target base station can be obtained from (x, y, z) and (x', y ', z').
According to the embodiment of the invention, the position information of the user equipment is acquired through the positioning reference signal, the acquired position information of the user equipment is more accurate, and the acquired distance between the user equipment and the target base station is more accurate.
Based on the foregoing in any one of the foregoing embodiments, based on a distance between the ith user equipment and the target base station, acquiring a transmission power of a resource block corresponding to the ith user equipment specifically includes: the type of the ith user equipment is determined based on the distance between the ith user equipment and the target base station.
The types of the user equipment comprise a central user and an edge user.
Specifically, whether the type of the i-th UE is a center user or an edge user may be determined based on the distance between the UE and the target base station.
Among the center user and the edge user, the center user refers to the UE closer to the target base station, and the edge user refers to the UE farther from the target base station.
And acquiring the energy of the resource elements of the physical downlink shared channel corresponding to the ith user equipment based on the type of the ith user equipment and the distance between the ith user equipment and the target base station.
Specifically, the energy (Energy Per Resource Element, EPRE) of the resource element of the physical downlink shared channel corresponding to the ith UE may be obtained based on the type of the ith UE and the distance D between the ith UE and the target base station.
Wherein, EPRE PDSC H represents EPRE of PDSCH;EPRE representing PDSCH corresponding to the type of UE;r represents the path loss.
Optionally, one is preset for each of the central user and the edge userCenter user corresponding +.>Corresponding to edge user->Can be set according to the actual conditions such as MCS level and the like. Corresponding +.>Corresponding to edge user->The embodiment of the present invention is not particularly limited.
The calculation formula of the path loss R is as follows
R＝32.4+20log(D)+20log(F)
Wherein D represents a distance between the UE and the target base station; f represents the center frequency point of the target base station.
And acquiring the transmission power of the resource block corresponding to the ith user equipment based on the energy of the resource element of the physical downlink shared channel corresponding to the ith user equipment.
Specifically, the EPRE corresponding to the ith UE can be based on the mobile communication standards such as 4G or 5G PDSCH Calculating the transmission power P of a resource block corresponding to the ith UE RB 。
According to the embodiment of the invention, the path loss is calculated relatively accurately through the distance between the user terminal and the target base station, the target base station side can freely set the PDSCH and the downlink transmission power, and can set the target MCS levels of the central user and the edge user, and the EPRE allocated to each user terminal is determined based on the target MCS levels and the calculated path loss, so that dynamic power allocation is realized, and more reasonable resource allocation can be realized.
Based on the foregoing in any of the foregoing embodiments, determining the type of the ith user equipment based on a distance between the ith user equipment and the target base station specifically includes: and determining the type of the ith user equipment as an edge user under the condition that the distance between the ith user equipment and the target base station is larger than a target threshold value.
Specifically, in the case that the distance between the i-th user equipment and the target base station is greater than the target threshold, the type of the i-th user equipment may be determined as an edge user; in case that the distance between the i-th user equipment and the target base station is less than or equal to the target threshold, the type of the i-th user equipment may be determined as the central user.
The target threshold may be predetermined according to actual situations such as coverage requirements of the target base station. The embodiment of the present invention is not particularly limited with respect to the specific value of the target threshold.
In the embodiment of the invention, the type of the user equipment is determined to be the edge user under the condition that the distance between the user equipment and the target base station is larger than the target threshold value, so that the edge user and the center user can be more accurately distinguished, the transmitting power of the resource block corresponding to the user equipment can be obtained based on the type of the user equipment and the distance between the user equipment and the target base station, dynamic power distribution is realized, and more reasonable resource distribution can be realized.
Based on the foregoing in any one of the foregoing embodiments, based on energy of a resource element of the physical downlink shared channel corresponding to the ith user equipment, obtaining a transmission power of a resource block corresponding to the ith user equipment specifically includes: and under the condition that the ith user equipment does not have a demodulation reference signal symbol, acquiring the transmission power of a resource block corresponding to the ith user equipment according to the energy of the resource element of the physical downlink shared channel corresponding to the ith user equipment.
Specifically, in the case that the DMRS symbol does not exist in the ith UE, the transmission power P of the resource block corresponding to the ith UE RB The calculation can be made by the following formula:
wherein, EPRE PDSCH Represents the EPRE of PDSCH.
In the embodiment of the invention, under the condition that the demodulation reference signal symbol does not exist, the transmission power of the resource block corresponding to the user equipment is acquired according to the energy of the resource element of the physical downlink shared channel corresponding to the user equipment, and the acquired transmission power of the single resource block is more accurate.
Based on the foregoing in any one of the foregoing embodiments, based on energy of a resource element of the physical downlink shared channel corresponding to the ith user equipment, obtaining a transmission power of a resource block corresponding to the ith user equipment specifically includes: and under the condition that the ith user equipment does not have a demodulation reference signal symbol, acquiring the transmission power of a resource block corresponding to the ith user equipment based on the energy of the resource elements of the physical downlink shared channel corresponding to the ith user equipment, the duty ratio of the demodulation reference signal in the demodulation reference signal symbol, the duty ratio of the physical downlink shared channel in the demodulation reference signal symbol, the port number of the demodulation reference signal and the energy of the resource elements of each port of the demodulation reference signal.
Specifically, in the case that the DMRS symbol exists in the ith UE, the transmission power P of the resource block corresponding to the ith UE RB The calculation can be made by the following formula:
wherein ratio is DMRS Representing the duty cycle of the DMRS in the DMRS symbol; ratio of PDSCH Representing the duty cycle of PDSCH in DMRS symbols;a port number representing DMRS; />EPRE representing each port of DMRS; EPRE (Ethernet Passive optical network) PDSCH Represents the EPRE of PDSCH.
Where β refers to the ratio of PDSCH EPRE to DMRS EPRE.
The beta values in table 1 may be determined according to code division multiplexing (Code Division Multiplexing, CDM) group selection.
Table 1 beta table
Data-free DM-RS CDM group number DM-RS configuration type 1 DM-RS configuration type 2
1 0dB 0dB
2 -3dB -3dB
3 - -4.77dB
In the embodiment of the invention, under the condition that the demodulation reference signal symbol exists, the transmission power of the resource block corresponding to the user equipment is obtained based on the energy of the resource element of the physical downlink shared channel corresponding to the user equipment, the duty ratio of the demodulation reference signal in the demodulation reference signal symbol, the duty ratio of the physical downlink shared channel in the demodulation reference signal symbol, the port number of the demodulation reference signal and the energy of the resource element of each port of the demodulation reference signal, and the obtained transmission power of the single resource block is more accurate.
In order to facilitate understanding of the above embodiments of the present invention, the implementation procedure of the resource block allocation method will be described below.
As shown in fig. 2, the resource block allocation method may include the steps of:
step 201, positioning the UE position according to PRS, and calculating the distance to the base station.
And determining the position of each UE in the queue to be scheduled according to the PRS, and determining the distance between each UE and the target base station, so that the UEs in the queue to be scheduled are divided into a center user and an edge user.
Step 202, calculating initial residual power.
The initial remaining power, i.e. the power to be currently allocated by the target base station for the 1 st UE in the queue to be scheduled.
For the 1 st UE in the queue to be scheduled, the target base station currently allocates power P remain For the total transmit power P of the target base station total The total transmit power of CSIRS channel, SSB channel, PDSCH and PDSCH DMRS is subtracted.
P remain ＝P total -P SSB -P CSIRS -P PDSCH -P DMRS
Wherein P is SSB Representing the total transmit power of the SSB channel; p (P) CSIRS Indicating the total transmit power of the CSIRS channel; p (P) PDSCH Representing the total transmission power of PDSCH; p (P) DMRs Representing the total transmit power of PDSCH DMRS.
EPRE SSB The EPRE, which represents SSB, may be configured by a higher level source in dbm. P (P) SSB The calculation formula of (2) is as follows:
wherein,indicating the number of REs of SSB.
EPRE CSIRS The EPRE, which represents the CSIRS, may be obtained by adding a bias to the EPRE of the SSB, and may be configured by a higher layer source in dbm. P (P) CSIRS The calculation formula of (2) is as follows:
wherein,indicating the number of REs of the CSIRS.
In the absence of DMRS symbols, P PDSCH The calculation formula of (2) is as follows:
in the presence of DMRS symbols, P PDSCH The calculation formula of (2) is as follows:
wherein,the number of RBs representing PDSCH.
P DMRS The calculation formula of (2) is as follows:
it should be noted that, for the 1 st UE in the queue to be scheduled, the target base station currently allocates the power P remain Has been predetermined according to the coverage requirements of the target base station.
Step 203, determining whether the initial remaining power is greater than 0.
In case the initial remaining power is greater than 0, step 204 is performed; in case the initial remaining power is less than or equal to 0, step 209 is performed.
And 204, sequentially taking out the UE from the queue to be scheduled.
Step 205, calculating the power required for each RB allocation.
If the currently fetched UE is the ith UE, calculating the transmission power P of the resource block corresponding to the UE RB 。
Step 206, determining whether the current power to be allocated is sufficient.
Judging whether the current power to be allocated of the target base station is larger than the transmission power P of the resource block corresponding to the ith user equipment RB And the number n of resource blocks to be scheduled RB The product of the two steps.
If greater than or equal to, go to step 207; if so, step 208 is performed.
Step 207, RB resources are allocated.
Target base station schedules n to ith UE RB And resource blocks.
And step 208, distributing RB resources according to the power to be distributed currently.
Based on the power P to be allocated currently remain Transmission power P of resource block corresponding to i-th UE RB Acquiring the number of resource blocks actually allocated to the ith UE by the target base stationScheduling to the ith UE>And resource blocks.
Step 209, end.
Total transmit power P of base station total The calculation is performed according to each symbol, so that the operation of the remaining power (i.e. the power to be allocated) needs to be performed on each symbol until the complete allocation of the power of a certain symbol occurs. FIG. 2 shows one of the symbolsThe resource block allocation procedure of the other symbol is the same as the resource block allocation procedure of the symbol, and will not be described here again.
In order to facilitate understanding of the above embodiments of the present invention, the implementation of the resource block allocation method will be described by way of an example.
Total transmit power P of pico station (i.e., target base station) total 27dbm.
The SSB and the CSIRS are not existed in a certain scheduling slot (slot), namely P SSB ＝0，P CSIRS =0. For the 1 st UE in the queue to be scheduled, P remain ＝501mW。
If the DMRS schedule satisfies DM-RS configuration type 1 (DM-RS configuration type 1), number of DM-RS CDM groups without data (DM-RS CDM group Number without data) is 2, then β is-3 db. This configuration may consider the ratio of the DMRS to be 0.5, i.e., ratio DMRS =0.5; PDSCH does not exist on DMRS symbol, ratio PDSCH ＝0。
3 user equipments UE1/UE2/UE3 need to be scheduled. Wherein UE1\UE3 is a central user, and the target received power is-89 dbm; UE3 is an edge user and the target received power is-100 dbm. All 3 user equipments are dual-stream, i.e. 2 DMRS ports are used.
UE1 is 100 meters from the target base station, UE2 is 500 meters from the target base station, and UE3 is 50 meters from the base station. The center frequency point of the target base station is 3.5GHz.
Through the correlation formulas in the above embodiments, UE1/UE2/UE3 DMRS symbols and PDSCH symbols can be calculated, and the transmission power of a single RB is shown in table 2.
Table 2P RB Value table
UE1 UE2 UE3
PDSCH symbol (mW) 3.24 6.38 0.81
DMRS symbol (mW) 3.24 6.38 0.81
Since DMRS occupies higher power, PDSCH symbols also take the value of DMRS symbols.
The scheduling sequence is UE 1- & gt UE 2- & gt UE3.
If the UE1 needs to schedule 50 RBs, 50 RBs may be allocated to the UE1, and the power to be allocated after completing the scheduling of the UE1 is: 501-3.24×50=339 (mW).
UE2 needs to schedule 100 RBs, but since the current power to be allocated 339mW only satisfies 339 +.6.38=53.13 (2-bit fraction reserved). Therefore, 53 RBs are actually allocated to the UE 2.
For UE3, the power to be allocated is 339-6.38x53=0.86, and allocation may be no longer performed, or 1 RB may be allocated to UE3.
The resource block allocation device provided by the invention is described below, and the resource block allocation device described below and the resource block allocation method described above can be referred to correspondingly.
Fig. 3 is a schematic structural diagram of a resource block allocation apparatus according to an embodiment of the present invention. Based on the foregoing in any of the foregoing embodiments, as shown in fig. 3, the apparatus includes a power acquisition module 301 and a number acquisition module 302, where:
a power obtaining module 301, configured to obtain, for an ith user equipment in a queue to be scheduled, a transmission power of a resource block corresponding to the ith user equipment based on a distance between the ith user equipment and a target base station;
the number obtaining module 302 is configured to obtain, when a product of a transmission power of a resource block corresponding to the ith user equipment and a number of resource blocks to be scheduled is greater than a current power to be allocated to the target base station, a number of resource blocks allocated to the ith user equipment based on the current power to be allocated to the target base station and the transmission power of the resource block corresponding to the ith user equipment.
Specifically, the power acquisition module 301 and the number acquisition module 302 are electrically connected.
The power acquisition module 301 may acquire, according to the first model, a transmission power P of a resource block corresponding to an ith UE in a queue to be scheduled based on a distance between the UE and a target base station RB 。
The number acquisition module 302 may determine whether the theoretical total transmission power of the resource block corresponding to the ith UE exceeds the current power P to be allocated by the target base station remain 。
At P remain ＜n RB ·P RB In the case of (a), the number acquisition module 302 may acquire the number of resource blocks actually allocated to the ith UE by the target base station by the following formula
Optionally, the apparatus may further include:
the distance acquisition module is used for acquiring the distance between the ith user equipment and the target base station based on the positioning reference signal of the ith user equipment.
Alternatively, the power acquisition module 301 may include:
a type determining unit, configured to determine a type of the ith user equipment based on a distance between the ith user equipment and the target base station;
an energy obtaining unit, configured to obtain energy of a resource element of a physical downlink shared channel corresponding to the ith user equipment based on a type of the ith user equipment and a distance between the ith user equipment and a target base station;
a power determining unit, configured to obtain a transmission power of a resource block corresponding to the ith user equipment based on energy of a resource element of a physical downlink shared channel corresponding to the ith user equipment;
the types of the user equipment comprise a central user and an edge user.
Alternatively, the type determining unit may be specifically configured to determine the type of the i-th user equipment as the edge user in a case where a distance between the i-th user equipment and the target base station is greater than a target threshold.
Optionally, the power determining unit may be specifically configured to obtain, when the ith user equipment does not have the demodulation reference signal symbol, a transmission power of a resource block corresponding to the ith user equipment according to energy of a resource element of a physical downlink shared channel corresponding to the ith user equipment.
Optionally, the power determining unit may be specifically configured to, when the ith user equipment does not have a demodulation reference signal symbol, obtain the transmission power of the resource block corresponding to the ith user equipment based on the energy of the resource element of the physical downlink shared channel corresponding to the ith user equipment, the duty cycle of the demodulation reference signal in the demodulation reference signal symbol, the duty cycle of the physical downlink shared channel in the demodulation reference signal symbol, the number of ports of the demodulation reference signal, and the energy of the resource element of each port of the demodulation reference signal.
The resource block allocation device provided by the embodiment of the invention is used for executing the resource block allocation method provided by the invention, and the implementation mode of the resource block allocation device is consistent with the implementation mode of the resource block allocation method provided by the invention, and the same beneficial effects can be achieved, and the detailed description is omitted.
The resource block allocation apparatus is used for the resource block allocation method of each of the foregoing embodiments. Therefore, the descriptions and definitions in the resource block allocation method in the foregoing embodiments may be used for understanding each execution module in the embodiments of the present invention.
According to the embodiment of the invention, the transmission power of the resource block corresponding to the user equipment is obtained based on the distance between the user equipment and the target base station in the queue to be scheduled, under the condition that the product of the transmission power of the resource block corresponding to the user equipment and the number of the resource blocks to be scheduled is larger than the current power to be allocated to the target base station, the number of the resource blocks allocated to the user equipment is obtained based on the current power to be allocated to the target base station and the transmission power of the resource block corresponding to the user equipment, on the basis of combining static allocation and semi-static allocation, the scheme of maximum power limitation is considered during resource allocation, the realization is very simple, the problem of unreasonable resource allocation can be solved more flexibly, the more reasonable resource allocation can be realized, the transmission power of the same resource blocks can be allocated to each user equipment by dynamic power allocation configuration, the situation that the transmission efficiency of the edge user equipment is lower can be avoided, and the maximum utilization ratio of the resource can be realized according to the base station under the conditions that the total transmission power of the resource block allocated to the user equipment is ensured not to exceed the total transmission power of the base station and the target modulation and coding strategy (Modulation and Coding Scheme, MCS) is realized, and the maximum resource allocation is more reasonable.
Fig. 4 illustrates a physical schematic diagram of an electronic device, as shown in fig. 4, which may include: processor 410, communication interface (Communications Interface) 420, memory 430 and communication bus 440, wherein processor 410, communication interface 420 and memory 430 communicate with each other via communication bus 440. The processor 410 may invoke logic instructions in the memory 430 to perform a resource block allocation method comprising: for the ith user equipment in a queue to be scheduled, acquiring the transmission power of a resource block corresponding to the ith user equipment based on the distance between the ith user equipment and a target base station; and under the condition that the product of the transmission power of the resource block corresponding to the ith user equipment and the number of the resource blocks to be scheduled is larger than the current power to be allocated to the target base station, acquiring the number of the resource blocks allocated to the ith user equipment based on the current power to be allocated to the target base station and the transmission power of the resource block corresponding to the ith user equipment.
Further, the logic instructions in the memory 430 described above may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as a stand-alone product. Based on this understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform 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, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The processor 410 in the electronic device provided in the embodiment of the present application may call the logic instruction in the memory 430, and its implementation manner is consistent with the implementation manner of the resource block allocation method provided in the present application, and may achieve the same beneficial effects, which are not described herein again.
In another aspect, the present invention also provides 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 resource block allocation method provided by the above methods, the method comprising: for the ith user equipment in a queue to be scheduled, acquiring the transmission power of a resource block corresponding to the ith user equipment based on the distance between the ith user equipment and a target base station; and under the condition that the product of the transmission power of the resource block corresponding to the ith user equipment and the number of the resource blocks to be scheduled is larger than the current power to be allocated to the target base station, acquiring the number of the resource blocks allocated to the ith user equipment based on the current power to be allocated to the target base station and the transmission power of the resource block corresponding to the ith user equipment.
When the computer program product provided in the embodiment of the present application is executed, the above method for allocating resource blocks is implemented, and a specific implementation manner of the method is consistent with an implementation manner described in the embodiment of the foregoing method, and may achieve the same beneficial effects, which are not described herein again.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, is implemented to perform the above provided resource block allocation methods, the method comprising: for the ith user equipment in a queue to be scheduled, acquiring the transmission power of a resource block corresponding to the ith user equipment based on the distance between the ith user equipment and a target base station; and under the condition that the product of the transmission power of the resource block corresponding to the ith user equipment and the number of the resource blocks to be scheduled is larger than the current power to be allocated to the target base station, acquiring the number of the resource blocks allocated to the ith user equipment based on the current power to be allocated to the target base station and the transmission power of the resource block corresponding to the ith user equipment.
When the computer program stored on the non-transitory computer readable storage medium provided in the embodiment of the present application is executed, the above method for allocating resource blocks is implemented, and the specific implementation manner of the method is consistent with the implementation manner described in the embodiment of the foregoing method, and the same beneficial effects can be achieved, which is not repeated herein.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (7)

1. A method for allocating resource blocks, comprising:
for an ith user equipment in a queue to be scheduled, acquiring the transmission power of a resource block corresponding to the ith user equipment based on the distance between the ith user equipment and a target base station;
obtaining the number of resource blocks allocated to the ith user equipment based on the current power to be allocated by the target base station and the transmission power of the resource blocks corresponding to the ith user equipment under the condition that the product of the transmission power of the resource blocks corresponding to the ith user equipment and the number of the resource blocks to be scheduled is larger than the current power to be allocated by the target base station;
The obtaining the transmission power of the resource block corresponding to the ith user equipment based on the distance between the ith user equipment and the target base station specifically includes:
determining the type of the ith user equipment based on the distance between the ith user equipment and the target base station;
acquiring energy of resource elements of a physical downlink shared channel corresponding to the ith user equipment based on the type of the ith user equipment and the distance between the ith user equipment and the target base station;
and under the condition that the ith user equipment has a demodulation reference signal symbol, acquiring the transmission power of the resource block corresponding to the ith user equipment based on the energy of the resource elements of the physical downlink shared channel corresponding to the ith user equipment, the duty ratio of the demodulation reference signal in the demodulation reference signal symbol, the duty ratio of the physical downlink shared channel in the demodulation reference signal symbol, the port number of the demodulation reference signal and the energy of the resource elements of each port of the demodulation reference signal.
2. The method for allocating resource blocks according to claim 1, wherein, before the obtaining, for the ith user equipment in the queue to be scheduled, the transmission power of the resource block corresponding to the ith user equipment based on the distance between the ith user equipment and the target base station, the method further comprises:
And acquiring the distance between the ith user equipment and the target base station based on the positioning reference signal of the ith user equipment.
3. The resource block allocation method according to claim 1, wherein the determining the type of the i-th ue based on the distance between the i-th ue and the target base station specifically comprises:
and determining the type of the ith user equipment as an edge user under the condition that the distance between the ith user equipment and the target base station is larger than a target threshold value.
4. The method for allocating resource blocks according to claim 1, wherein the obtaining the transmission power of the resource block corresponding to the ith user equipment based on the energy of the resource element corresponding to the physical downlink shared channel of the ith user equipment specifically comprises:
and under the condition that the ith user equipment does not have a demodulation reference signal symbol, acquiring the transmission power of a resource block corresponding to the ith user equipment according to the energy of the resource element of the physical downlink shared channel corresponding to the ith user equipment.
5. A resource block allocation apparatus, comprising:
The power acquisition module is used for acquiring the transmission power of a resource block corresponding to the ith user equipment based on the distance between the ith user equipment and a target base station for the ith user equipment in a queue to be scheduled;
a number obtaining module, configured to obtain, when a product of a transmission power of a resource block corresponding to the ith user equipment and a number of resource blocks to be scheduled is greater than a current power to be allocated to the target base station, a number of resource blocks allocated to the ith user equipment based on the current power to be allocated to the target base station and the transmission power of the resource block corresponding to the ith user equipment;
the power acquisition module is specifically configured to:
determining the type of the ith user equipment based on the distance between the ith user equipment and the target base station;
acquiring energy of resource elements of a physical downlink shared channel corresponding to the ith user equipment based on the type of the ith user equipment and the distance between the ith user equipment and the target base station;
and under the condition that the ith user equipment has a demodulation reference signal symbol, acquiring the transmission power of the resource block corresponding to the ith user equipment based on the energy of the resource elements of the physical downlink shared channel corresponding to the ith user equipment, the duty ratio of the demodulation reference signal in the demodulation reference signal symbol, the duty ratio of the physical downlink shared channel in the demodulation reference signal symbol, the port number of the demodulation reference signal and the energy of the resource elements of each port of the demodulation reference signal.
6. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the resource block allocation method according to any of claims 1 to 4 when the program is executed.
7. A non-transitory computer readable storage medium having stored thereon a computer program, which when executed by a processor, implements the steps of the resource block allocation method according to any of claims 1 to 4.
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