CN113727454B - SRS differential scheduling-based method and system - Google Patents

SRS differential scheduling-based method and system Download PDF

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CN113727454B
CN113727454B CN202110779898.7A CN202110779898A CN113727454B CN 113727454 B CN113727454 B CN 113727454B CN 202110779898 A CN202110779898 A CN 202110779898A CN 113727454 B CN113727454 B CN 113727454B
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interfered
scheduling
resource block
rbs
user equipment
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CN113727454A (en
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黄中明
龚业
欧丹丹
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Kingsignal Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

The invention discloses a method based on SRS differential scheduling, which comprises the following steps: receiving full-bandwidth channel sounding reference SRS signals sent by a plurality of user equipment; determining interfered and undisturbed Resource Blocks (RBs) of each user equipment according to the channel quality of the channel sounding reference SRS signal; scheduling priorities of interfered and non-interfered Resource Blocks (RBs) are ordered, wherein the priority of the non-interfered Resource Blocks (RBs) is greater than that of the interfered Resource Blocks (RBs), and the scheduling priority of the interfered Resource Blocks (RBs) is related to the interference intensity of the RBs; according to the priorities of a plurality of user equipment and scheduling priority ordering of Resource Blocks (RBs) corresponding to the plurality of user equipment, after the user equipment with high priority performs resource block scheduling first, the user equipment with low priority performs resource block RB scheduling, and each user equipment schedules one or more Resource Blocks (RBs) with highest priority in scheduling priority ordering of the corresponding Resource Blocks (RBs). An apparatus, a base station, and a computer readable storage medium are also disclosed.

Description

SRS differential scheduling-based method and system
Technical Field
The invention belongs to the technical field of communication, and particularly relates to a method and a system based on SRS differential scheduling.
Background
NR (New Radio), also known as New air interface, is mainly applied in 5G field, called 5G NR. The 5G is a global 5G standard based on a brand new air interface design of OFDM, and is also a very important cellular mobile technology base of the next generation. As 3GPP adopts this standard, the term NR is used as another name of 5G, and the 5G era, NR and core network each evolve independently to 5G. The 5G index of interest mainly includes data rate, time delay and energy consumption cost. In order to achieve the demanding requirements, three key technologies are mainly used: ultra dense heterogeneous networks, millimeter wave communications, and massive MIMO. The NR system is gradually built, but the whole communication system is easily interfered by neighboring cells and artificial interference. Including co-channel interference and adjacent channel interference. The co-channel interference is interference generated between cells using the same frequency resource, and the adjacent channel interference refers to interference generated between cells using adjacent or similar frequency resources, wherein the adjacent channel interference is generated because the frequency modulation signal contains an infinite number of side frequency components, and when some side frequency components fall into the passband of an adjacent channel receiver, the adjacent channel interference is caused.
In the demodulation process, some subcarriers (or Resource Blocks (RBs) or frequency bands) are interfered, so that the signal-to-noise ratio (SINR) is low, demodulation performance is seriously affected, and the problem of poor user experience is caused. The prior art for solving related problems such as interference and the like generally adopts filtering and frequency selection; the solution of the intra-cell interference generally adopts orthogonal codes, error correction codes, joint detection, intelligent antennas and the like; the inter-cell interference acquisition is usually solved by using a synchronization technology, a smart antenna technology and the like. However, these methods are used to solve the problem of single user interference, and cannot implement differentiated scheduling.
Disclosure of Invention
The invention aims to provide a method based on SRS differential scheduling, which considers the priority of user equipment, identifies the Resource Block (RB) of interference of each user equipment, obtains the scheduling priority of the Resource Block (RB) according to the interference degree of the Resource Block (RB), orders the Resource Block (RB) according to the priority of the Resource Block (RB), and then schedules the Resource Block (RB) of the user equipment with higher priority according to the priority of the user equipment, so as to implement differential scheduling on the whole user equipment, reduce the noise interference of the whole scheduling, and implement an innovative calculation method for the interference intensity and priority of the Resource Block (RB).
The invention provides a method based on SRS differential scheduling, which comprises the following steps:
Receiving full-bandwidth channel sounding reference SRS signals sent by a plurality of user equipment;
Determining Resource Blocks (RBs) interfered by each user equipment and Resource Blocks (RBs) not interfered by each user equipment according to the channel quality of the channel sounding reference SRS signals;
Scheduling priorities of interfered Resource Blocks (RBs) and undisturbed Resource Blocks (RBs), wherein the priority of the undisturbed Resource Blocks (RBs) is greater than that of the interfered Resource Blocks (RBs), the scheduling priority of the interfered Resource Blocks (RBs) is related to the RB interference intensity, and the RB interference intensity is determined according to the average noise interference of a full-bandwidth carrier, the carrier interference intensity and the number of carrier interferences;
and according to the priorities of the user equipment and scheduling priority orders of the Resource Blocks (RBs) corresponding to the user equipment, the user equipment with high priority performs resource block scheduling firstly, and then the user equipment with low priority performs resource block RB scheduling, and each user equipment schedules one or more Resource Blocks (RBs) with highest priority in scheduling priority orders of the corresponding Resource Blocks (RBs).
Further, determining the interfered resource block RB and the non-interfered resource block RB of each of the user equipments according to the channel quality of the channel sounding reference SRS signal further includes:
According to the channel sounding reference SRS signal, respectively calculating the average signal-to-noise ratio SINR1 of the resource blocks RB with full bandwidth and the signal-to-noise ratio SINR2 of each resource block RB;
And determining that the resource block RB of each user equipment is an interfered resource block RB or an undisturbed resource block RB according to the average signal-to-noise ratio SINR1 and the signal-to-noise ratio SINR2 judgment criterion of each resource block RB.
Further, the judging criteria include: and respectively comparing the difference value of the signal-to-noise ratio SINR2 of each resource block RB and the average signal-to-noise ratio SINR1 of the resource block RB with a preset signal-to-noise ratio threshold value as an evaluation difference value, and identifying the resource block RB interfered by each user equipment.
Further, the judging criteria include: and determining that the current resource block RB is the interfered resource block RB according to whether the signal-to-noise ratio SINR2 of each resource block RB exceeds the maximum signal-to-noise ratio SINR value allowed when the resource block RB is transmitted, if so, determining that the current resource block RB is not interfered, and if not, determining that the current resource block RB is not interfered.
Further, the scheduling prioritization of the undisturbed resource blocks RBs further includes:
the undisturbed resource blocks RB are ordered in descending order of the value of the signal to noise ratio SINR2 of each of the resource blocks RB.
Further, the scheduling prioritization of the interfered resource block RB and the undisturbed resource block RB further comprises: the scheduling priority of each interfered resource block RB is determined by adopting a formula (1):
PrRB＝SINR2/(1+IRB) (1)，
Where Pr RB represents the priority of each interfered resource block RB, I RB represents the interference strength, and SINR2 represents the signal-to-noise ratio of each interfered resource block RB;
the RB interference strength of each interfered resource block RB is determined by using formula (2):
wherein, The reported average noise interference intensity of the full bandwidth carrier is represented, I sc represents the carrier interference intensity, N sc represents the number of interfered carriers, and alpha is a weight coefficient.
Further, the step 4 includes: the priorities of the plurality of user equipments are determined according to quality of service QOS levels of the user equipments.
A second aspect of the present invention provides a system based on SRS differential scheduling, applied to a base station side, including:
the signal receiving module is used for receiving full-bandwidth channel sounding reference SRS signals sent by a plurality of user equipment;
A resource block RB scheduling priority identifying module, configured to determine, according to the channel quality of the channel sounding reference SRS signal, a resource block RB interfered by each user equipment and a resource block RB not interfered by each user equipment;
A resource block RB ordering module, configured to order scheduling priorities of interfered resource blocks RBs and undisturbed resource blocks RBs, where the undisturbed resource block RB priority is greater than the priority of the interfered resource blocks RBs, the scheduling priority of the interfered resource blocks RBs is related to RB interference intensity, and the RB interference intensity is determined according to full bandwidth carrier average noise interference, carrier interference intensity, and carrier interference number;
And the differentiated scheduling module is used for scheduling the Resource Blocks (RBs) according to the priorities of the user equipment and scheduling priorities of the Resource Blocks (RBs) corresponding to the user equipment, wherein after the user equipment with high priority performs resource block scheduling, the user equipment with low priority performs resource block RB scheduling, and each user equipment schedules one or more Resource Blocks (RBs) with highest priority in scheduling priority ordering of the corresponding Resource Blocks (RBs).
A third aspect of the invention provides a base station comprising a processor and communication circuitry, the processor being coupled to the communication circuitry, the processor being operable to execute instructions to implement the method of the first aspect.
A fourth aspect of the invention provides a computer readable storage medium storing a plurality of instructions readable by a processor and for performing the method of the first aspect.
The differentiated scheduling method, the differentiated scheduling system and the electronic equipment provided by the invention have the following beneficial effects:
(1) In the resource scheduling process, according to the channel quality of the channel sounding reference SRS signal, determining the interfered Resource Block (RB) and the undisturbed Resource Block (RB) of each user equipment, scheduling priority ordering the interfered Resource Block (RB) and the undisturbed Resource Block (RB), scheduling the Resource Block (RB) with the highest priority in scheduling priority ordering according to the priorities of a plurality of user equipment and the Resource Blocks (RBs) corresponding to the user equipment, and scheduling the Resource Block (RB) by the user equipment with the high priority after scheduling the resource block by the user equipment with the low priority, wherein each user equipment schedules one or more RBs with the highest priority in scheduling priority ordering of the Resource Blocks (RBs) corresponding to the user equipment. Therefore, each user equipment schedules the resource block RB with the highest priority in the sequence of the user equipment in the scheduling process, and even if the resource block RB with the highest priority is already selected and occupied, the selected sequence is still to select the resource block RB with the highest priority in the rest resource blocks RB for scheduling, so that the actual scheduling effect of the resource block RB is obtained as best as possible for each user equipment.
(2) The consideration of the interference intensity is added, the interference intensity is determined according to the average noise interference intensity of the full-bandwidth carrier, the carrier interference intensity and the carrier interference number, and the proportion weight is introduced in the calculation of the interference intensity, and the carrier interference variance and the interfered carrier proportion are comprehensively considered, so that the interference intensity of the RB is more reasonably and accurately determined.
(3) And determining the priority of the user equipment by combining the quality service QOS grade of the user equipment and SRS measurement, and then carrying out Resource Block (RB) scheduling, wherein the RB scheduling is strongly associated with the grade of the current user equipment, so that differentiated scheduling of different users can be realized, and the users have better experience.
(4) The priority of all user equipments and the priority of the resource block RB are considered simultaneously in the scheduling process, so that overall better interference reduction for all user equipments can be achieved, not just for a single user.
Drawings
Fig. 1 is a flowchart of a method based on SRS differential scheduling provided by the present invention.
Fig. 2 is a schematic structural diagram of a preferred embodiment of a system based on SRS differential scheduling according to the present invention.
Fig. 3 is a schematic structural diagram of an embodiment of a base station according to the present invention.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Example 1
Referring to fig. 1, a method based on SRS differential scheduling is provided in the first embodiment, in which two user equipments are taken as an example to illustrate implementation details of an algorithm, and certainly not limited to two UEs, including:
s101, receiving full-bandwidth channel sounding reference SRS signals sent by a plurality of user equipments.
In the step 1, the uplink channel sounding reference SRS signal adopts the ZC sequence as a base sequence and is generated for operation through circulation.
S102, determining the resource block RB interfered by each user equipment and the resource block RB not interfered according to the channel quality of the channel sounding reference SRS signal.
For example: based on the channel quality of the channel sounding reference SRS signal, it can be determined whether a resource block has an already used portion to determine whether it is interfered, by counting and determining whether the proportion of unused RB portions in each resource block RB to the already used RB portions in the total resource block RBs is 100%. Of course, other manners may be adopted to calculate the interfered condition of each RB of the ue, for example, to calculate whether the proportion of the used RB part in each RB to the unused RB part in all RBs is zero. Specifically, it can be set as required. Of course, this situation characterizes both completely disturbed and completely undisturbed situations, and the subsequent preferred embodiment determines the relatively disturbed and relatively undisturbed situations by means of signal-to-noise ratio calculations.
And S103, scheduling priorities of interfered Resource Blocks (RBs) and non-interfered Resource Blocks (RBs) are ordered, wherein the priority of the non-interfered Resource Blocks (RBs) is greater than that of the interfered Resource Blocks (RBs), the scheduling priority of the interfered Resource Blocks (RBs) is related to the RB interference intensity, and the RB interference intensity is determined according to the average noise interference of the full-bandwidth carrier, the carrier interference intensity and the carrier interference number.
Because one resource block RB comprises 12 continuous subcarriers in frequency and one s lot in time domain, each subcarrier interference can influence the interference of the resource block RB, so that the interference of the resource block RB, the carrier interference intensity and the number of carrier interference are directly related, and in addition, the RB interference intensity can be more accurately represented by introducing the difference relation between the carrier average interference of the full bandwidth and each subcarrier interference in the RB.
S104, according to the priorities of the two user equipments and the scheduling priority ordering of the Resource Blocks (RBs) corresponding to the two user equipments, after the user equipment (such as the first user equipment) with high priority first performs resource block scheduling, the user equipment (for the second user equipment) with low priority performs Resource Block (RB) scheduling, and each user equipment schedules one or more Resource Blocks (RBs) with highest priority in the scheduling priority ordering of the corresponding Resource Blocks (RBs).
In this embodiment, if the first ue has a higher priority than the second ue, it is indicated that in the RB scheduling process, the first ue performs RB scheduling first, and then the second ue cannot perform RB scheduling. Assuming that the priorities of RBs in the first user equipment are ranked as RB2, RB1, RB4, RB5 and RB3, and the priorities of RBs in the second user equipment are ranked as RB2, RB3, RB5, RB1 and RB4, the first user equipment schedules RB2 resources first, and when the second user equipment schedules, the first priority RB2 resources are also scheduled by the first user equipment, only RB3 resource blocks can be scheduled, and it is known from the above that RB3 resources are the resource blocks with the greatest interference of the first user equipment, but the resource blocks with the highest priority in the resource blocks capable of being scheduled are the resource blocks capable of being scheduled relative to the second user, that is, by the method of the application, all user equipments can perform optimal scheduling on the resource blocks, and all the RB resources can perform optimal scheduling relative to the whole bandwidth signal.
As a preferred embodiment, determining the interfered resource block RB and the non-interfered resource block RB of each user equipment according to the channel quality of the channel sounding reference SRS signal further includes:
according to the SRS signal, calculating the average signal-to-noise ratio SINR1 of the Resource Blocks (RBs) with full bandwidth and the signal-to-noise ratio SINR2 of each Resource Block (RBs) respectively;
And determining the resource block RB of each user equipment as an interfered resource block RB or an undisturbed resource block RB according to the average signal-to-noise ratio SINR1 and the signal-to-noise ratio SINR2 judgment criterion of each resource block RB.
In this embodiment, the ratio of the unused RB part in each resource block RB to the used RB part in all the resource blocks RB may be counted and determined as the signal-to-noise ratio index of each resource block RB. According to the ratio value, the interfered level of the current resource block RB may be set. Of course, other manners may be adopted to calculate the interfered condition of each RB of the ue, for example, calculating the proportion of the used RB part in each RB to the unused RB part in all RBs of the ue, which may be set as required.
In this embodiment, the signal to noise ratios of RB1, RB2, RB3, RB4, and RB5 are respectively 30%, 20%, 60%, 40%, and 50%, and SINR 1=40%, and RB1 RB2 and RB4 with signal to noise ratios less than 40% are undisturbed resource blocks RB, and RB3 and RB5 with signal to noise ratios higher than 40% are disturbed resource blocks.
In this embodiment, for the interfered resource blocks RB, the interfered level may be further divided into three levels: high interference, medium interference and low interference. Specifically, when the interfered level of the resource block RB is set according to the ratio value of the signal to noise ratio, the interfered level of the resource block RB may be set as follows according to different practical situations, for a service with very high requirements for signal quality when the ratio value of the signal to noise ratio is 20%: high interference; for a service with low requirement on signal quality, the interfered level of the resource block RB may be: low interference.
As a preferred embodiment, the judgment criteria include: and respectively comparing the difference value of the signal-to-noise ratio SINR2 of each resource block RB and the average signal-to-noise ratio SINR1 of the resource block RB with a preset signal-to-noise ratio threshold value as an evaluation difference value, and identifying the resource block RB interfered by each user equipment. In this embodiment, THR is a preset SNR threshold according to SINR2-SINR1> THR.
Still taking the signal-to-noise ratio situation in this embodiment as an example, in this embodiment, the signal-to-noise ratios of RB1, RB2, RB3, RB4, and RB5 are respectively 30%, 20%, 60%, 40%, and 50%, where SINR 1=40%, the difference between each resource block and the average signal-to-noise ratio is respectively-10%, -20%,20%,0, and 10%, the preset signal-to-noise ratio threshold THR is 8%, where RB1 RB2 and RB4 with the difference less than 80% are undisturbed resource blocks RB, and RB3 and RB5 with the signal-to-noise ratio difference higher than 8% are interfered resource blocks.
As a preferred embodiment, the judgment criteria include: and determining that the current resource block RB is the interfered resource block RB according to whether the signal-to-noise ratio SINR2 of each resource block RB exceeds the maximum signal-to-noise ratio SINR value allowed when the resource block RB is transmitted, if so, determining that the current resource block RB is not interfered, and if not, determining that the current resource block RB is not interfered.
Still taking the signal-to-noise ratio in this embodiment as an example, in this embodiment, the signal-to-noise ratios of RB1, RB2, RB3, RB4, and RB5 are respectively 30%, 20%, 60%, 40%, and 50%, and the maximum signal-to-noise ratio SINR value allowed when the resource block RB is transmitted is 40%, then RB1 RB2 and RB4 with a signal-to-noise ratio less than 40% are undisturbed resource blocks RB, and RB3 and RB5 with a signal-to-noise ratio higher than 40% are disturbed resource blocks.
As a preferred embodiment, scheduling prioritizing the undisturbed resource blocks RBs further comprises: the undisturbed resource blocks RB are ordered in descending order of the value of the signal to noise ratio SINR2 for each resource block RB.
As a preferred embodiment, scheduling prioritizing interfered resource blocks RBs and non-interfered resource blocks RBs further comprises: the scheduling priority of each interfered resource block RB is determined using formula (1):
PrRB＝SINR2/(1+IRB) (1)；
where Pr RB represents the priority of each interfered resource block RB, I RB represents the interference strength, and SINR2 represents the signal-to-noise ratio of each interfered resource block RB.
The RB interference strength of each interfered resource block RB is determined using equation (2):
wherein, The reported average noise interference intensity of the full bandwidth carrier is represented, I sc represents the carrier interference intensity, N sc represents the number of interfered carriers, and alpha is a weight coefficient.
The consideration of the interference intensity is determined according to the average noise interference of the full bandwidth carrier, the carrier interference intensity and the number of carrier interference, and the proportion weight is introduced in the calculation of the interference intensity, and the carrier interference variance and the proportion of the interfered carrier are comprehensively considered, so that the interference intensity of the RB is more reasonably and accurately determined. For example, an intuitive interpretation of the interference intensity is: if one carrier in the first resource block RB1 has strong interference, the interference degree is 20, and is difficult to demodulate, and the second resource block RB2 contains 5 interfered carriers, and each carrier has interference degree of 4, so that the interference strength of RB2 is considered to be lower in the present invention, and the calculation method of the interference strength is obviously more reasonable.
Further, step 4 includes: the priority according to the plurality of user equipments includes: the priorities of the plurality of user equipments are determined according to a quality service QOS (Quality of Service) level of the user equipments, wherein the quality service includes: and the service type information and/or the user grade information carried in the service request data and the like, and the quality service grade of the user equipment can be obtained by determining the service quality priority information based on the service quality related information. Of course, those skilled in the art are well aware of other parameters related to scheduling priority known in the art that are not limited to QOS as a unique indicator.
In this embodiment, assuming that the priority of the UE1 is higher, the RB resources of the UE1 are scheduled preferentially after the RB priorities of the resource blocks of the UE1 are ordered. The priority of the user equipment 2 is lower, but the priority of the resource block RB may be the same as or different from the resource block RB of the user equipment 1, and after the resource block RB of the user equipment 1 is subtracted, the resource block RB is allocated to the user equipment 2, so that the user equipment 2 has a high probability of being allocated to the best resource block RB, and even if the best frequency band is not available, the best frequency band can be selected for data transmission, thereby reducing the overall interference.
Example two
Referring to fig. 2, the present invention provides a system based on SRS differential scheduling, including:
a signal receiving module 201, configured to receive full-bandwidth channel sounding reference SRS signals sent by a plurality of user equipments;
A resource block RB scheduling priority identifying module 202, configured to determine, according to the channel quality of the channel sounding reference SRS signal, an interfered resource block RB (Resource Block) and an undisturbed resource block RB of each user equipment;
A resource block RB ordering module 203, configured to order scheduling priorities of interfered resource blocks RBs and non-interfered resource blocks RBs, where the non-interfered resource block RB priority is greater than the priority of the interfered resource blocks RBs, the scheduling priority of the interfered resource blocks RBs is related to RB interference strength, and the RB interference strength is determined according to the full bandwidth carrier average noise interference, the carrier interference strength, and the carrier interference number;
The differentiated scheduling module 204 is configured to order according to priorities of a plurality of user equipments and scheduling priorities of resource blocks RBs corresponding to the plurality of user equipments, perform resource RB block scheduling first by a user equipment with a high priority, and then perform resource block RB scheduling by a user equipment with a low priority, where each user equipment schedules one or more resource blocks RBs with highest priorities in scheduling priority orders of the corresponding resource blocks RBs.
The device may be implemented by the SRS-based differentiated scheduling method provided in the first embodiment, and a specific implementation method may be referred to the description in the first embodiment and will not be repeated herein.
The invention also provides a memory storing a plurality of instructions for implementing the method according to the first embodiment.
As shown in fig. 3, the present invention further provides a base station, which includes a processor 301 and a communication circuit 302 connected to the processor 301, where a plurality of instructions are stored in the base station, and the instructions can be loaded and executed by the processor, so that the processor 301 can execute the method as in the first embodiment.
The differentiated scheduling method, the differentiated scheduling system and the electronic equipment provided by the embodiment have the following beneficial effects:
(1) In the resource scheduling process, according to the channel quality of the channel sounding reference SRS signal, determining the interfered Resource Block (RB) and the undisturbed Resource Block (RB) of each user equipment, scheduling priority ordering the interfered Resource Block (RB) and the undisturbed Resource Block (RB), scheduling the Resource Block (RB) with the highest priority in scheduling priority ordering according to the priorities of a plurality of user equipment and the Resource Blocks (RBs) corresponding to the user equipment, and scheduling the Resource Block (RB) by the user equipment with the high priority after scheduling the resource block by the user equipment with the low priority, wherein each user equipment schedules one or more RBs with the highest priority in scheduling priority ordering of the Resource Blocks (RBs) corresponding to the user equipment. Therefore, each user equipment schedules the resource block RB with the highest priority in the sequence of the user equipment in the scheduling process, and even if the resource block RB with the highest priority is already selected and occupied, the selected sequence is still to select the resource block RB with the highest priority in the rest resource blocks RB for scheduling, so that the actual scheduling effect of the resource block RB is obtained as best as possible for each user equipment.
(2) The consideration of the interference intensity is added, the interference intensity is determined according to the average noise interference intensity of the full-bandwidth carrier, the carrier interference intensity and the carrier interference number, and the proportion weight is introduced in the calculation of the interference intensity, and the carrier interference variance and the interfered carrier proportion are comprehensively considered, so that the interference intensity of the RB is more reasonably and accurately determined.
(3) And determining the priority of the user equipment by combining the quality service QOS grade of the user equipment and SRS measurement, and then carrying out Resource Block (RB) scheduling, wherein the RB scheduling is strongly associated with the grade of the current user equipment, so that differentiated scheduling of different users can be realized, and the users have better experience.
(4) The priority of all user equipments and the priority of the resource block RB are considered simultaneously in the scheduling process, so that overall better interference reduction for all user equipments can be achieved, not just for a single user.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (9)

1. The method based on SRS differential scheduling is applied to a base station side and is characterized by comprising the following steps:
Receiving full-bandwidth channel sounding reference SRS signals sent by a plurality of user equipment;
Determining Resource Blocks (RBs) interfered by each user equipment and Resource Blocks (RBs) not interfered by each user equipment according to the channel quality of the channel sounding reference SRS signals;
Scheduling priorities of interfered Resource Blocks (RBs) and undisturbed Resource Blocks (RBs), wherein the priority of the undisturbed Resource Blocks (RBs) is greater than that of the interfered Resource Blocks (RBs), the scheduling priority of the interfered Resource Blocks (RBs) is related to the RB interference intensity, and the RB interference intensity is determined according to the average noise interference of a full-bandwidth carrier, the carrier interference intensity and the number of carrier interferences; the scheduling prioritization of the interfered resource blocks RBs and the non-interfered resource blocks RBs further comprises: the scheduling priority of each interfered resource block RB is determined by adopting a formula (1):
PrRB＝SINR2/(1+IRB) (1)，
Where Pr RB represents the priority of each interfered resource block RB, I RB represents the interference strength, and SINR2 represents the signal-to-noise ratio of each interfered resource block RB;
the RB interference strength of each interfered resource block RB is determined by using formula (2):
wherein, The reported average noise interference intensity of the full bandwidth carrier is represented, I sc represents the carrier interference intensity, N sc represents the number of the interfered carriers, and alpha is a weight coefficient;
and according to the priorities of the user equipment and scheduling priority orders of the Resource Blocks (RBs) corresponding to the user equipment, the user equipment with high priority performs resource block scheduling firstly, and then the user equipment with low priority performs resource block RB scheduling, and each user equipment schedules one or more Resource Blocks (RBs) with highest priority in scheduling priority orders of the corresponding Resource Blocks (RBs).
2. The method according to claim 1, wherein the determining the interfered resource block RB and the non-interfered resource block RB of each of the user equipments according to the channel quality of the channel sounding reference SRS signal further comprises:
According to the channel sounding reference SRS signal, respectively calculating the average signal-to-noise ratio SINR1 of the resource blocks RB with full bandwidth and the signal-to-noise ratio SINR2 of each resource block RB;
And determining that the resource block RB of each user equipment is an interfered resource block RB or an undisturbed resource block RB according to the average signal-to-noise ratio SINR1 and the signal-to-noise ratio SINR2 judgment criterion of each resource block RB.
3. The method for differential scheduling based on SRS according to claim 2, wherein the judging criteria includes: and respectively comparing the difference value of the signal-to-noise ratio SINR2 of each resource block RB and the average signal-to-noise ratio SINR1 of the resource block RB with a preset signal-to-noise ratio threshold value as an evaluation difference value, and identifying the resource block RB interfered by each user equipment.
4. The method for differential scheduling based on SRS according to claim 2, wherein the judging criteria includes: and determining that the current resource block RB is the interfered resource block RB according to whether the signal-to-noise ratio SINR2 of each resource block RB exceeds the maximum signal-to-noise ratio SINR value allowed when the resource block RB is transmitted, if so, determining that the current resource block RB is not interfered, and if not, determining that the current resource block RB is not interfered.
5. The SRS differential scheduling based method according to claim 1, wherein scheduling prioritizing undisturbed resource blocks RBs further comprises:
the undisturbed resource blocks RB are ordered in descending order of the value of the signal to noise ratio SINR2 of each of the resource blocks RB.
6. The method for differential scheduling based on SRS according to claim 1, wherein the priorities of the plurality of user equipments in the scheduling priority ordering according to priorities of the plurality of user equipments and Resource Blocks (RBs) corresponding to the plurality of user equipments are determined according to quality of service (QOS) levels of the user equipments.
7. A system based on SRS differential scheduling, applied to a base station side, characterized by comprising:
the signal receiving module is used for receiving full-bandwidth channel sounding reference SRS signals sent by a plurality of user equipment;
A resource block RB scheduling priority identifying module, configured to determine, according to the channel quality of the channel sounding reference SRS signal, a resource block RB interfered by each user equipment and a resource block RB not interfered by each user equipment;
A resource block RB ordering module, configured to order scheduling priorities of interfered resource blocks RBs and undisturbed resource blocks RBs, where the undisturbed resource block RB priority is greater than the priority of the interfered resource blocks RBs, the scheduling priority of the interfered resource blocks RBs is related to RB interference intensity, and the RB interference intensity is determined according to full bandwidth carrier average noise interference, carrier interference intensity, and carrier interference number;
The differentiated scheduling module is used for scheduling the Resource Blocks (RBs) with the highest priority in scheduling priority ordering of the corresponding Resource Blocks (RBs) of each user equipment according to the priorities of the user equipment and the scheduling priorities of the corresponding Resource Blocks (RBs) of the user equipment, wherein after the user equipment with the high priority performs resource block scheduling first, the user equipment with the low priority performs Resource Block (RB) scheduling, and each user equipment schedules one or more Resource Blocks (RBs) with the highest priority in scheduling priority ordering of the corresponding Resource Blocks (RBs);
the scheduling prioritization of the interfered resource blocks RBs and the non-interfered resource blocks RBs further comprises: the scheduling priority of each interfered resource block RB is determined by adopting a formula (1):
PrRB＝SINR2/(1+IRB) (1)，
Where Pr RB represents the priority of each interfered resource block RB, I RB represents the interference strength, and SINR2 represents the signal-to-noise ratio of each interfered resource block RB;
the RB interference strength of each interfered resource block RB is determined by using formula (2):
wherein, The reported average noise interference intensity of the full bandwidth carrier is represented, I sc represents the carrier interference intensity, N sc represents the number of interfered carriers, and alpha is a weight coefficient.
8. A base station comprising a processor and communication circuitry, the processor being coupled to the communication circuitry, the processor to execute instructions to implement the method of any of claims 1-6.
9. A computer readable storage medium storing a plurality of instructions readable by a processor and executable by the processor to perform the method of any one of claims 1-6.
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