CN102036397B - Resource scheduling method and device of TD-LTE (Time Division-Long Term Evolution) system - Google Patents
Resource scheduling method and device of TD-LTE (Time Division-Long Term Evolution) system Download PDFInfo
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Abstract
The invention provides a resource scheduling method of a TD-LTE (Time Division-Long Term Evolution) system, which comprises the steps of: setting corresponding priority modifying weight values aiming at different uses and/or services, wherein the priority modifying weight values are determined according to available control region resource information in subframes and control region resource information required by different users and/or services, and control regions are configured according to the maximum symptom quantity; obtaining the priority primitive values corresponding to different users and/or services, regulating the corresponding priority primitive values into priority updating values by using the priority modifying weight values; and scheduling the users and/or services by the current subframe according to the priority updating values. The invention can fully schedule the data resources and improve the resource utilization rate of the system.
Description
Technical field
The present invention relates to the technical field of mobile communication Long Term Evolution LTE, particularly relate to the resource regulating method of a kind of TD-LTE system and the resource scheduling device of a kind of TD-LTE system.
Background technology
TD-LTE is TD-SCDMA Long Term Evolution, refers to the Long Term Evolution of TD-SCDMA, is the LTE technology of TDD version.
In the LTE system, the PDCCH(Physical Downlink Control Channel) be mainly used in sending dispatch DCI to user terminal, be used to indicate the information such as downlink transfer or the employed physical resource of uplink.The LTE system requires descending PCFICH(Physical Control Format Indicator Channel in design), the PDCCH(Physical Downlink Control Channel) and the PHICH(Physical HARQ Indicator Channel) share front 1～4 the OFDM symbol in the descending sub frame.PDCCH in descending sub frame only can dispatch the downlink data resource of current subframe, and, with current subframe data resource in the sub-frame of uplink of determining relation is arranged.
For the TD-LTE system, because the diversity of ascending-descending subframes configuration, cause the needed resource difference of PHICH in the different descending sub frames, only allow among the special time slot DwPTS of TD-LTE simultaneously to support 1～2 OFDM symbol to be used for transmitting control channel, this can cause in the different descending sub frames of TD-LTE system, the resource that can be used in transmission PDCCH has larger difference, i.e. the REG(resource units group that can use of different descending sub frame PDCCH) there is larger difference in number.When less and/or channel circumstance was better in number of users, PDCCH was not high to the resource requirement of control area, can carry out the load balancing of down control channel by the number of symbols of adjusting the control area.When but more or channel circumstance is abominable when number of users, in order to promote the demodulation performance of PDCCH, need to distribute more REG to PDCCH, often need to carry out according to the number of symbols of maximum the configuration of control area this moment, even PDCCH inadequate resource in certain descending sub frame appears, thereby so that the data area in the part subframe may not can be dispatched fully, and there is idle situation in the control area in the part descending sub frame, affects the resource utilization of system.
Therefore, need at present the urgent technical problem that solves of those skilled in the art to be exactly: the scheduling of resource that how can propose a kind of TD-LTE system machine-processed with innovating, in order to abundant data dispatching resource, and the resource utilization of raising system.
Summary of the invention
Technical problem to be solved by this invention provides resource regulating method and the device of a kind of TD-LTE system, with abundant data dispatching resource, improves the resource utilization of system.
In order to solve the problems of the technologies described above, the embodiment of the invention discloses the resource regulating method of a kind of TD-LTE system, comprising:
For different user and/or priority revision weights corresponding to business setting, described priority revision weights are according to control area resource information available in the subframe, and different user and/or professional required control area resource information are determined; Wherein, resource distribution is carried out according to maximum number of symbols in described control area,
Described priority revision weights are according to control area resource information available in the subframe, and different user and/or professional required control area resource information are determined, specifically comprise:
In same subframe group, described priority revision weights improve according to the increase of different user and/or professional transport block size, the minimizing of the resource information that perhaps takies according to different user and/or professional required PDCCH form and improving; Perhaps,
For same user and/or class of service, according to the increase of the REG number that can be used for distributing PDCCH in the subframe and improve;
Obtain different user and/or professional corresponding priority original value, utilize described priority revision weights that the priority original value of correspondence is adjusted into the priority update value;
User and/or business are dispatched according to described priority update value in current subframe.
Preferably, described different user and/or professional required control area resource information comprise: the resource information that different user and/or professional required PDCCH form take, and/or, the size information of different user and/or professional each transmission data block;
Described step for different user and/or the corresponding priority revision of business setting weights comprises:
The resource information that takies according to different user and/or professional required PDCCH form, and/or the size information of different user and/or professional each transmission data block is the N class with different user and/or delineation of activities; Wherein, described N is positive integer;
According to available control area resource information in the different descending sub frames, different user in the corresponding subframe and/or professional classification are arranged different priority revision weights.
Preferably, available control area resource information is in the described subframe: the REG number that can be used for distributing PDCCH in the subframe; Described different user and/or professional required control area resource information comprise: the size information of the resource information that different user and/or professional required PDCCH form take and/or different user and/or professional each transmission data block;
Described step for different user and/or the corresponding priority revision of business setting weights comprises:
According to the REG number that can be used for distributing PDCCH in the subframe, different descending sub frames is divided into the M group, described M is positive integer;
The resource information that takies according to different user and/or professional required PDCCH form, and/or the size information of different user and/or professional each transmission data block is the N class with different user and/or delineation of activities; Described N is positive integer;
For each subframe group m, according to different user and/or professional classification n different priority revision weights β is set
MnWherein, 0＜β
Mn≤ 1, m=1 ... M, n=1 ... N.
Preferably, described step for priority revision weights corresponding to different user and/or business setting also comprises:
To described subframe group according to corresponding REG number Allotment Serial Number m from high to low, m=1 ... M;
Descending to different user and/or professional classification Allotment Serial Number n according to the size information of user and/or professional each transmission data block; Perhaps, the resource information that takies according to user and/or professional required PDCCH form is Allotment Serial Number n from low to high; Wherein, n=1 ... N;
Described priority revision weights β
MnMeet the following conditions:
1) in subframe group m, when n ﹤ n ', β
Mnβ
Mn ', and β
MN=1; M ≠ 1 wherein;
2) for same user and/or class of service n, as m〉during m ', β
Mn＜β
M ' n, and β
1n=1; N ≠ N wherein.
Preferably, described step for priority revision weights corresponding to different user and/or business setting also comprises:
Calculate in real time according to system bandwidth, uplink-downlink configuration type, PHICH Group number and subframe numbering, can be used for distributing the REG number of PDCCH in the acquisition subframe.
Preferably, the described step that different descending sub frames is divided into M group is:
Distribute the REG number of PDCCH according to M different can be used for, different descending sub frames is divided into the M group.
Preferably, the described step that different descending sub frames is divided into M group is:
Distribute the REG number range of PDCCH according to M different can be used for, different descending sub frames is divided into the M group.
The embodiment of the invention also discloses the resource scheduling device of a kind of TD-LTE system, comprising:
Priority revision weights arrange module, be used for for different user and/or priority revision weights corresponding to business setting, described priority revision weights are according to control area resource information available in the subframe, and different user and/or professional required control area resource information are determined; Wherein, resource distribution is carried out according to maximum number of symbols in described control area;
Priority update value computing module is used for obtaining different user and/or professional corresponding priority original value, utilizes described priority revision weights that the priority original value of correspondence is adjusted into the priority update value;
Scheduler module is used for user and/or business being dispatched according to described priority update value in current subframe.
Preferably, described different user and/or professional required control area resource information comprise: the resource information that different user and/or professional required PDCCH form take, and/or, the size information of different user and/or professional each transmission data block;
Described priority revision weights arrange module and comprise:
User/business classification submodule, for the resource information that takies according to different user and/or professional required PDCCH form, and/or the size information of different user and/or professional each transmission data block is the N class with different user and/or delineation of activities; Wherein, described N is positive integer;
The first priority arranges submodule, is used for according to the different available control area resource informations of descending sub frame, and different user in the corresponding subframe and/or professional classification are arranged different priority revision weights.
Preferably, available control area resource information is in the described subframe: the REG number that can be used for distributing PDCCH in the subframe; Described different user and/or professional required control area resource information comprise: the size information of the resource information that different user and/or professional required PDCCH form take and/or different user and/or professional each transmission data block;
Described priority revision weights arrange module and comprise:
Subframe grouping submodule for the REG number that can be used for distributing PDCCH according to subframe, is divided into the M group with different descending sub frames, and described M is positive integer;
User/business classification submodule, for the resource information that takies according to different user and/or professional required PDCCH form, and/or the size information of different user and/or professional each transmission data block is the N class with different user and/or delineation of activities; Described N is positive integer;
The second priority arranges submodule, is used for for each subframe group m, according to different user and/or professional classification n different priority revision weights β is set
MnWherein, 0＜β
Mn≤ 1, m=1 ... M, n=1 ... N.
Preferably, described priority revision weights arrange module and also comprise:
Subframe group sequence number distribution sub module is used for described subframe group according to corresponding REG number Allotment Serial Number m from high to low, m=1 ... M;
User/class of service sequence number distribution sub module is used for according to the size information of user and/or professional each transmission data block descending to different user and/or professional classification Allotment Serial Number n; Perhaps, the resource information that takies according to user and/or professional required PDCCH form is Allotment Serial Number n from low to high; Wherein, n=1 ... N;
Described priority revision weights β
MnMeet the following conditions:
1) in subframe group m, when n ﹤ n ', β
Mnβ
Mn ', and β
MN=1; M ≠ 1 wherein;
2) for same user and/or class of service n, as m〉during m ', β
Mn＜β
M ' n, and β
1n=1; N ≠ N wherein.
Preferably, described priority revision weights arrange module and also comprise:
The REG calculating sub module is used for calculating in real time according to system bandwidth, uplink-downlink configuration type, PHICH Group number and subframe numbering, can be used for distributing the REG number of PDCCH in the acquisition subframe.
Compared with prior art, the present invention has the following advantages:
For the TD-LTE system, when more or channel circumstance is abominable when number of users, in order to promote the demodulation performance of PDCCH, often need to carry out according to the number of symbols of maximum the configuration of control area, when having reached the maximum configured of standard permission in descending control area, in order to solve owing to the different not high problems of part subframe resource utilization that cause of the running time-frequency resource of control area in the different descending sub frames, present embodiment passes through different user and/or business, according to control area resource information available in the subframe, and, different user and/or professional required control area resource information arrange priority revision weights, and revise weights by this priority user and/or professional priority original value are upgraded, thereby obtain the priority update value.In practice, according to different user and/or professional corresponding priority update value, make up the priority query that current subframe scheduling uses, dispatched according to this priority query by scheduler.The embodiment of the invention takes into full account the restriction of control area running time-frequency resource in the descending sub frame, by the priority of priority revision right value update user and/or professional scheduling is set, thereby avoid occurring in certain descending sub frame reaching the purpose that improves resource utilization ratio because the control area inadequate resource causes the not abundant problem of scheduling of the descending of its correspondence and upstream data resource.
In a preferred embodiment of the present invention, otherness according to PDCCH overhead in the different descending sub frames, use the few subframe scheduling of descending control area resource those take the many business of Physical Resource Block and/or dispatch the user that those are positioned at center of housing estate as far as possible, thereby reach the purpose of the expense of saving control channel.
Description of drawings
Fig. 1 is the schematic diagram of TD-LTE frame structure;
Fig. 2 is the schematic diagram that descending sub frame control area/data area is divided;
Fig. 3 is the flow chart of steps of the resource regulating method embodiment 1 of a kind of TD-LTE of the present invention system;
Fig. 4 is the flow chart of steps of the resource regulating method embodiment 2 of a kind of TD-LTE of the present invention system;
Fig. 5 is the flow chart of steps of the resource regulating method embodiment 3 of a kind of TD-LTE of the present invention system;
Fig. 6 is the schematic diagram that example 1 medium priority revision weights of the present invention arrange;
Fig. 7 is the schematic diagram that example 2 medium priorities revision weights of the present invention arrange;
Fig. 8 is the structured flowchart of the resource scheduling device embodiment of a kind of TD-LTE of the present invention system.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
For making those skilled in the art understand better the present invention, below the frame structure of TD-LTE and relative theory and the concept of downlink resource mapping are described.
With reference to the frame structure of TD-LTE shown in Figure 1, wherein, each radio frames (radio frame) is made of two fields (half-frame), and each radio frames is 10ms, and each half frame length is 5ms.Each field comprises 8 time slots (slot) and three special time slot: DwPTS, GP and UpPTS, the length of each time slot is 0.5ms, the length of special time slot DwPTS and UpPTS is configurable, but requires the total length of DwPTS, GP and UpPTS to equal 1ms.Subframe 1(subframe#1) and subframe 6(subframe#6) comprise DwPTS, GP and UpPTS, every other subframe (subframe# 0, subframe# 2, subframe# 3, subframe# 4, subframe# 5, subframe# 7, subframe# 8, subframe#9) comprises two adjacent time slots.
According to the configuration of different ascending-descending subframes, can support descending sub frame, sub-frame of uplink and the special subframe of different numbers in 10ms radio frames.TD-LTE shown in specifically can reference table 1 is different, and the ascending-descending subframes configuration is lower, the distribution condition of descending sub frame, sub-frame of uplink and special subframe:
Table 1:
D represents descending sub frame in the table 1, and U represents sub-frame of uplink, and S represents special subframe.
So, for descending sub frame, can be divided into 2 zones from the time: control area 201 and data area 202, specifically can be with reference to the schematic diagram of descending sub frame control area shown in Figure 2/data area division, part in the black surround is the shared symbolic number in control area 201, and the outer part of black surround is the shared symbolic number in data area 202.DwPTS and descending sub frame in the special subframe are similar, and unique difference is that the time span of DwPTS is less than 1ms.
Particularly, the shared OFDM number of symbols in descending control area is supported several configurations as shown in table 2:
Table 2:
In the TD-LTE system, different descending sub frames can independently be configured.When less and/or channel circumstance is better in number of users, can carry out the load balancing of down control channel by the symbol data of adjusting the control area.But, when more or channel circumstance is abominable when number of users, often need to carry out according to the number of symbols of maximum the configuration of control area.
The PCFICH(Physical Control Format Indicator Channel), PDCCH(Physical Downlink Control Channel) and the PHICH(Physical HARQ Indicator Channel) share all physical resources of descending control area.Generally use CCE(control channel unit for the physical resource of control area) or REG(resource units group) expression, wherein, 1 CCE is made of 9 REG, and a REG is comprised of 4 RE.The shared number of resources of PCFICH is fixed; The shared number of resources of PHICH is determined by two parameters: be arranged in the PBCH(Physical Broadcast Channel) PHICH Group configuration, and the ascending-descending subframes of TD-LTE system configuration; Resource outside the shared resource of PCFICH and PHICH will be for transmission PDCCH.
For example, the supposing the system bandwidth is 10MHz, resource distribution is carried out according to maximum number of symbols in the control area, PHICH Group is according to least resource consumption (configuration), CRS resource when considering 2 port arrangement, in different ascending-descending subframes configurations (as space is limited, only having listed configuration 0 and the configuration 1) situation, the PDCCH available resources result of calculation in the different descending sub frames (not considering the MBSFN transmission) is as shown in table 3.
Table 3:
Or as, the supposing the system bandwidth is 10MHz, resource distribution is carried out according to maximum number of symbols in the control area, PHICH Group is according to maximum resource consumption, CRS resource when considering 2 port arrangement, in different ascending-descending subframes configurations (as space is limited, only having listed configuration 0 and the configuration 1) situation, the PDCCH available resources result of calculation in the different descending sub frames (not considering the MBSFN transmission) is as shown in table 4.The main distinction of table 3 and table 4 is that PHICH Group is according to maximum configured in the table 3, and PHICH Group is according to maximum configured in the table 4.
Table 4:
Can find out that for the TD-LTE system, there is larger difference in the REG number that different descending sub frame PDCCH can use.PDCCH is mainly used in sending dispatch DCI to user terminal, is used to indicate the information such as downlink transfer or the employed physical resource of uplink.PDCCH in one of them descending sub frame only can dispatch the downlink data resource of current subframe, and with current subframe data resource in the sub-frame of uplink of determining relation is arranged.When less and/or channel circumstance was better in number of users, PDCCH was not high to the resource requirement of control area, can carry out the load balancing of down control channel by the number of symbols of adjusting the control area.
When more or channel circumstance is abominable when number of users, in order to promote the demodulation performance of PDCCH, need to distribute more REG to PDCCH, often need to carry out according to the number of symbols of maximum the configuration of control area this moment, even PDCCH inadequate resource in certain descending sub frame appears, cause the descending of its correspondence and upstream data resource not to be dispatched fully.
The inventor herein thinks that the main cause that causes this problem to occur is, does not take into full account control channel PDCCH resource limitation in the existing resource regulating method.When having disposed according to maximum resource in the control area, have now in the dispatching algorithm owing to do not take into full account the restraining factors of running time-frequency resource restriction in control area in the different descending sub frames, may cause the control area resource in some descending sub frame to reach limited border prior to other descending sub frames, thereby it is insufficient to affect descending and upstream data resource use corresponding to these subframes, affects the resource utilization of system.For this problem, the inventor herein creatively proposes one of core idea of the embodiment of the invention and is, when having disposed according to maximum resource in the control area, use the few subframe scheduling of descending control area resource those take the many business of Physical Resource Block and/or dispatch the user that those are positioned at center of housing estate as far as possible, to save the expense of control channel.
With reference to figure 3, show the flow chart of steps of the resource regulating method embodiment 1 of a kind of TD-LTE of the present invention system, specifically can may further comprise the steps:
For the TD-LTE system, when more or channel circumstance is abominable when number of users, in order to promote the demodulation performance of PDCCH, often need to carry out according to the number of symbols of maximum the configuration of control area, when having reached the maximum configured of standard permission in descending control area, in order to solve owing to the different not high problems of part subframe resource utilization that cause of the running time-frequency resource of control area in the different descending sub frames, present embodiment passes through different user and/or business, according to control area resource information available in the subframe, and, different user and/or professional required control area resource information arrange priority revision weights, and revise weights by this priority user and/or professional priority original value are upgraded, thereby obtain the priority update value.In practice, according to different user and/or professional corresponding priority update value, make up the priority query that current subframe scheduling uses, dispatched according to this priority query by scheduler.
In specific implementation, when generating the priority query of current subframe scheduling use, do not revise the weights setting of former priority query, because newly-generated priority query is only effective to current subframe, other subframes also need to use the weights setting of former priority query when generating the priority query of current subframe scheduling use.In addition, the scheduling interval of priority sequence herein can also can be longer time scale for a subframe, such as field or a frame etc.
Present embodiment takes into full account the restriction of control area running time-frequency resource in the descending sub frame, by the priority of priority revision right value update user and/or professional scheduling is set, thereby avoid occurring in certain descending sub frame reaching the purpose that improves resource utilization ratio because the control area inadequate resource causes the not abundant problem of scheduling of the descending of its correspondence and upstream data resource.
With reference to figure 4, show the flow chart of steps of the resource regulating method embodiment 2 of a kind of TD-LTE of the present invention system, in the present embodiment, resource distribution is carried out according to maximum number of symbols in described control area; Specifically can may further comprise the steps:
Available control area resource information in step 402, the different descending sub frame of foundation arranges different priority revision weights to different user in the corresponding subframe and/or professional classification;
In the present embodiment, the resource information that can only take according to different user and/or professional required PDCCH form is classified to described user and/or business; Also can only according to different user and/or professional each the transmission of data block size, described user and/or business be classified; Can also consider resource and different user and/or professional each the transmission of data block size that different user and/or professional required PDCCH form take, described user and/or business are classified.The setting of described priority revision weights arranges for different user and/or class of service in each descending sub frame, namely different user and/professional corresponding priority revision weights, get the priority revision weights of classification under it.
With reference to figure 5, show the flow chart of steps of the resource regulating method embodiment 3 of a kind of TD-LTE of the present invention system, in the present embodiment, resource distribution is carried out according to maximum number of symbols in described control area; Specifically can may further comprise the steps:
In specific implementation, can be used for distributing the REG number of PDCCH to calculate in real time acquisition according to system bandwidth, uplink-downlink configuration type, PHICH Group number, subframe numbering, specifically can reference table 3 or table 4.Carrying out descending sub frame when grouping, can in strict accordance with the PDCCH that calculates can with the REG number carry out the descending sub frame grouping, namely distribute the REG number of PDCCH according to M different can be used for, different descending sub frames is divided into the M group; The corresponding subframe of a plurality of REG numbers that also can difference is little is divided into one group, namely distributes the REG number range of PDCCH according to M different can be used for, and different descending sub frames is divided into the M group, to save the complexity of subsequent weight.
In a preferred embodiment of the present invention, can also be to described subframe group according to corresponding REG number Allotment Serial Number m from high to low, m=1 ... M; More preferably, can also be descending to different user and/or professional classification Allotment Serial Number n according to the size information of user and/or professional each transmission data block; Perhaps, the resource information that takies according to user and/or professional required PDCCH form is Allotment Serial Number n from low to high; Wherein, n=1 ... N; In this case, described priority revision weights β
MnMeet the following conditions:
1) in subframe group m, when n ﹤ n ', β
Mnβ
Mn ', and β
MN=1; M ≠ 1 wherein;
2) for same user and/or class of service n, as m〉during m ', β
Mn＜β
M ' n, and β
1n=1; N ≠ N wherein.
Present embodiment is according to the otherness of PDCCH overhead in the different descending sub frames, use the few subframe scheduling of descending control area resource those take the many business of Physical Resource Block and/or dispatch the user that those are positioned at center of housing estate as far as possible, to save the expense of control channel.
For making those skilled in the art understand better the present invention, below the simple examples (example 1 and example 2) by two descending schedulings further specifies the embodiment of the invention.
Example 1 and example 2 are all based on following public hypothesis:
(a) the TD-LTE system bandwidth is 10MHz, sub-frame configuration is 0, and the common antenna port number is 2, and resource distribution is carried out according to maximum number of symbols in the control area, PHICH Group is configured according to maximum resource consumption, and special time slot distribution (DwPTS:GP:UpPTS) is 11:2:1.According to table 4 as can be known, 318,207,318,207(unit PDCCH available resources in different descending sub frames during sub-frame configuration 0 (not considering the MBSFN transmission) are respectively:: reg), corresponding downlink data zone available resources are respectively: 6000,4800,6000,4800(unit: RE);
(b) 9 kinds of different users of descending existence/professional C1, C2 ... C8, C9, corresponding priority is respectively 1,0.9,0.8,0.7,0.6,0.5,0.4,0.3,0.2, takies PDCCH format resource size and is respectively 2,4,1,8,2,4,8,4,4, and unit is CCE; The each transport block size of miscellaneous service is respectively: 200,1300,700,800,300,300,1500,700,, 800(is for ease of analyzing, and the unit that different business takies the data block size is made as RE).
Example 1: adopt the different user need not professional mode of classifying according to transport block size, based on public hypothesis, the concrete steps of this example comprise:
Step (1): according to the number of the REG that can be used for distribution PDCCH, different descending sub frames is divided into the M=2 group, what be called from high to low two REG of subframe group 1(several 318 according to the REG number is one group, be that subframe 0 and subframe 5 are one group), two REG of subframe group 2(several 207 be one group, namely subframe 1 and subframe 6 are one group);
Step (2): the different user different business is classified according to transport block size.In this example, with the data block size take less than 500RE be divided into a class (service class 3), be divided into a class (service class 2) with what the data block size took 500～1000 RE, the data block size takies and is divided into a class (service class 1) greater than 1000RE.Concrete, for 9 kinds of this example different user/business, its category division is as follows:
Service class 1(takies the RE number more than or equal to 1000): C2 and C7;
Service class 2(takies the RE number more than or equal to 500, but less than 1000): C3, C4, C8 and C9;
Service class 3(takies the RE number less than or equal to 500): C1, C5 and C6.
According to the subframe group that step (1) generates, for arranging different priority, different user/classs of service revises weights β
Mn, as shown in Figure 6:
Step (3): on the priority original value basis of the different user of hypothesis/business, multiply by descending sub frame group and the priority revision weights β corresponding to user/class of service at its place in front
Mn, generate new priority update value, as shown in table 5.Because the weights of subframe group 1 correspondence are 1, only subframe group 2 are analyzed here.
Table 5:
| Professional number | C1 | C2 | C3 | C4 | C5 | C6 | C7 | C8 | C9 |
| Priority before upgrading | 1 | 0.9 | 0.8 | 0.7 | 0.6 | 0.5 | 0.4 | 0.3 | 0.2 |
| Take PDCCH resource (CCE) | 2 | 4 | 1 | 8 | 2 | 4 | 8 | 4 | 4 |
| Transport block size (RE) | 200 | 1300 | 700 | 800 | 300 | 300 | 1500 | 700 | 800 |
| Priority revision weights β mn | 0.6 | 1 | 0.7 | 0.7 | 0.6 | 0.6 | 1 | 0.7 | 0.7 |
| Priority after the renewal | 0.6 | 0.9 | 0.56 | 0.49 | 0.36 | 0.30 | 0.4 | 0.21 | 0.14 |
By assumed condition as can be known: for each subframe in the subframe group 2, the available resources of PDCCH are 207RE(23CCE), the available resources in the downlink data zone that it is corresponding are 4800RE.When only considering downlink data dispatched, when not adopting the embodiment of the invention, schedulable user is that C1～C6(consumes PDCCH resource 2+4+1+8+2+4=21CCE), the resource utilization of data area is 3600/4800=75%; After adopting the embodiment of the invention, descending schedulable user is C1～C4, and C7(consumes PDCCH resource 2+4+1+8+8=23CCE), the resource utilization of data area is 4500/4800=94%.
Example 2:
Adopt different user professional to carry out mode classification according to taking the PDCCH form, based on public hypothesis, these routine concrete steps comprise:
Step (1): according to the number of the REG that can be used for distribution PDCCH, different descending sub frames is divided into the M=2 group, what be called from high to low two REG of subframe group 1(several 318 according to the REG number is one group, be that subframe 0 and subframe 5 are one group), two REG of subframe group 2(several 207 be one group, namely subframe 1 and subframe 6 are one group);
Step (2): the different user different business is classified according to required PDCCH form size.In this example, with take the PDCCH resource be the business of 1CCE and 2CCE as a class (service class 1), the PDCCH resource be 4CCE be a class (service class 2), the PDCCH resource be 8CCE be a class (service class 3).Concrete, for 9 kinds of present embodiment different user/business, its category division is as follows:
It is 1 or 2 that service class 1(PDCCH takies the CCE number): C 1, C3 and C5;
It is 4 that service class 2(PDCCH takies the CCE number): C2, C6, C8 and C9;
It is 8 that service class 3(PDCCH takies the CCE number): C4, and C7.
According to the subframe group that step (1) generates, for arranging different priority, different user/classs of service revises weights β
Mn, as shown in Figure 7.
Step (3): on the priority original value basis of the different user of hypothesis/business, multiply by descending sub frame group and the priority revision weights β corresponding to user/class of service at its place in front
Mn, generate new priority update value, as shown in table 6.Because the weights of subframe group 1 correspondence are 1, only subframe group 2 are analyzed here.
Table 6:
| Professional number | C1 | C2 | C3 | C4 | C5 | C6 | C7 | C8 | C9 |
| Priority before upgrading | 1 | 0.9 | 0.8 | 0.7 | 0.6 | 0.5 | 0.4 | 0.3 | 0.2 |
| Take PDCCH resource (CCE) | 2 | 4 | 1 | 8 | 2 | 4 | 8 | 4 | 4 |
| Transport block size (RE) | 200 | 1300 | 700 | 800 | 300 | 300 | 1500 | 700 | 800 |
| Priority revision weights β mn | 1 | 0.9 | 1 | 0.2 | 1 | 0.9 | 0.2 | 0.9 | 0.9 |
| Priority after the |
1 | 0.81 | 0.8 | 0.14 | 0.6 | 0.45 | 0.08 | 0.27 | 0.18 |
By assumed condition as can be known: for each subframe in the subframe group 2, the available resources of PDCCH are 207RE(23CCE), the available resources in the downlink data zone that it is corresponding are 4800RE.When only considering downlink data dispatched, when not adopting the embodiment of the invention, schedulable user is that C1～C6(consumes PDCCH resource 2+4+1+8+2+4=21CCE), the resource utilization of data area is 3600/4800=75%; After adopting the embodiment of the invention, schedulable user is C1～C3, C5, and C6, C8, C9(consume PDCCH resource 2+4+1+2+4+4+4=21CCE), the resource utilization of data area is 4300/4800=90%.
Need to prove, below only be based on the at present example of scheduling mode and descending scheduling based on subframe commonly used, in fact, related user, business, scheduling and formation in the embodiment of the invention, both can be downlink user, business, scheduling and formation, also can be up user, business, scheduling and formation.Scheduler can be respectively for the correlation step in descending and/or up user, business, scheduling and the formation execution embodiment of the invention; And the embodiment of the invention is not limited to the scheduling time scale based on subframe, and can be field or a frame dispatching cycle, and the present invention need not this to be limited.
For aforesaid each embodiment of the method, for simple description, so it all is expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not subjected to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in the specification all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.
With reference to figure 8, show the structured flowchart of the resource scheduling device embodiment of a kind of TD-LTE of the present invention system, specifically can comprise:
Priority revision weights arrange module 801, be used for for different user and/or priority revision weights corresponding to business setting, described priority revision weights are according to control area resource information available in the subframe, and different user and/or professional required control area resource information are determined; Wherein, resource distribution is carried out according to maximum number of symbols in described control area;
Priority update value computing module 802 is used for obtaining different user and/or professional corresponding priority original value, utilizes described priority revision weights that the priority original value of correspondence is adjusted into the priority update value;
As a preferred embodiment of the present invention, described different user and/or professional required control area resource information can comprise: the resource information that different user and/or professional required PDCCH form take, and/or, the size information of different user and/or professional each transmission data block;
In this case, described priority revision weights arrange module and can comprise following submodule:
User/business classification submodule, for the resource information that takies according to different user and/or professional required PDCCH form, and/or the size information of different user and/or professional each transmission data block is the N class with different user and/or delineation of activities; Wherein, described N is positive integer;
The first priority arranges submodule, is used for according to the different available control area resource informations of descending sub frame, and different user in the corresponding subframe and/or professional classification are arranged different priority revision weights.
As another kind of preferred embodiment of the present invention, available control area resource information can be the REG number that can be used for distributing PDCCH in the subframe in the described subframe; Described different user and/or professional required control area resource information can comprise: the size information of the resource information that different user and/or professional required PDCCH form take and/or different user and/or professional each transmission data block;
In this case, described priority revision weights arrange module and can comprise following submodule:
Subframe grouping submodule for the REG number that can be used for distributing PDCCH according to subframe, is divided into the M group with different descending sub frames, and described M is positive integer;
User/business classification submodule, for the resource information that takies according to different user and/or professional required PDCCH form, and/or the size information of different user and/or professional each transmission data block is the N class with different user and/or delineation of activities; Described N is positive integer;
The second priority arranges submodule, is used for for each subframe group m, according to different user and/or professional classification n different priority revision weights β is set
MnWherein, 0＜β
Mn≤ 1, m=1 ... M, n=1 ... N.
In a kind of concrete application example of the embodiment of the invention, described priority revision weights arrange module and can also comprise following submodule:
Subframe group sequence number distribution sub module is used for described subframe group according to corresponding REG number Allotment Serial Number m from high to low, m=1 ... M;
User/class of service sequence number distribution sub module is used for according to the size information of user and/or professional each transmission data block descending to different user and/or professional classification Allotment Serial Number n; Perhaps, the resource information that takies according to user and/or professional required PDCCH form is Allotment Serial Number n from low to high; Wherein, n=1 ... N;
Described priority revision weights β
MnMeet the following conditions:
1) in subframe group m, when n ﹤ n ', β
Mnβ
Mn', and β
MN=1; M ≠ 1 wherein;
2) for same user and/or class of service n, as m〉during m ', β
Mn＜β
M ' n, and β
1n=1; N ≠ N wherein.
In specific implementation, described priority revision weights arrange module and can also comprise:
The REG calculating sub module is used for calculating in real time according to system bandwidth, uplink-downlink configuration type, PHICH Group number and subframe numbering, can be used for distributing the REG number of PDCCH in the acquisition subframe.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.Because device embodiment of the present invention is substantially corresponding to aforesaid embodiment of the method, so not detailed part in the description of present embodiment can referring to the related description in the previous embodiment, just not given unnecessary details at this.
At last, also need to prove, among the present invention, relational terms such as the first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or sequentially between these entities or the operation.And, term " comprises " or its any other variant is intended to contain comprising of nonexcludability, thereby not only comprise those key elements so that comprise process, method, article or the equipment of a series of key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.Do not having in the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
More than the resource scheduling device of the resource regulating method of a kind of TD-LTE provided by the present invention system and a kind of TD-LTE system is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1. the resource regulating method of a TD-LTE system is characterized in that, comprising:
For different user and/or priority revision weights corresponding to business setting, described priority revision weights are according to control area resource information available in the subframe, and different user and/or professional required control area resource information are determined; Wherein, resource distribution is carried out according to maximum number of symbols in described control area,
Described priority revision weights are according to control area resource information available in the subframe, and different user and/or professional required control area resource information are determined, specifically comprise:
In same subframe group, described priority revision weights improve according to the increase of different user and/or professional transport block size, the minimizing of the resource information that perhaps takies according to different user and/or professional required PDCCH form and improving; Perhaps,
For same user and/or class of service, according to the increase of the REG number that can be used for distributing PDCCH in the subframe and improve;
Obtain different user and/or professional corresponding priority original value, utilize described priority revision weights that the priority original value of correspondence is adjusted into the priority update value;
User and/or business are dispatched according to described priority update value in current subframe.
2. the method for claim 1, it is characterized in that, described different user and/or professional required control area resource information comprise: the resource information that different user and/or professional required PDCCH form take, and/or, the size information of different user and/or professional each transmission data block;
Described step for different user and/or the corresponding priority revision of business setting weights comprises:
The resource information that takies according to different user and/or professional required PDCCH form, and/or the size information of different user and/or professional each transmission data block is the N class with different user and/or delineation of activities; Wherein, described N is positive integer;
According to available control area resource information in the different descending sub frames, different user in the corresponding subframe and/or professional classification are arranged different priority revision weights.
3. the method for claim 1 is characterized in that, control area resource information available in the described subframe is: the REG number that can be used for distributing PDCCH in the subframe; Described different user and/or professional required control area resource information comprise: the resource information that different user and/or professional required PDCCH form take, and/or the size information of different user and/or professional each transmission data block;
Described step for different user and/or the corresponding priority revision of business setting weights comprises:
According to the REG number that can be used for distributing PDCCH in the subframe, different descending sub frames is divided into the M group, described M is positive integer;
The resource information that takies according to different user and/or professional required PDCCH form, and/or the size information of different user and/or professional each transmission data block is the N class with different user and/or delineation of activities; Described N is positive integer;
For each subframe group m, according to different user and/or professional classification n different priority revision weights β is set
MnWherein, 0＜β
Mn≤ 1, m=1 ... M, n=1 ... N.
4. method as claimed in claim 3 is characterized in that, described step for priority revision weights corresponding to different user and/or business setting also comprises:
To described subframe group according to corresponding REG number Allotment Serial Number m from high to low, m=1 ... M;
Descending to different user and/or professional classification Allotment Serial Number n according to the size information of user and/or professional each transmission data block; Perhaps, the resource information that takies according to user and/or professional required PDCCH form is Allotment Serial Number n from low to high; Wherein, n=1 ... N;
Described priority revision weights β
MnMeet the following conditions:
1) in subframe group m, when n＜n ', β
Mnβ
Mn ', and β
MN=1; M ≠ 1 wherein;
2) for same user and/or class of service n, as m〉during m ', β
Mn＜β
M ' n, and β
1n=1; N ≠ N wherein.
5. method as claimed in claim 3 is characterized in that, described step for priority revision weights corresponding to different user and/or business setting also comprises:
Calculate in real time according to system bandwidth, uplink-downlink configuration type, PHICH Group number and subframe numbering, can be used for distributing the REG number of PDCCH in the acquisition subframe.
6. such as claim 3,4 or 5 described methods, it is characterized in that the described step that different descending sub frames is divided into M group is:
Distribute the REG number of PDCCH according to M different can be used for, different descending sub frames is divided into the M group.
7. such as claim 3,4 or 5 described methods, it is characterized in that the described step that different descending sub frames is divided into M group is:
Distribute the REG number range of PDCCH according to M different can be used for, different descending sub frames is divided into the M group.
8. the resource scheduling device of a TD-LTE system is characterized in that, comprising:
Priority revision weights arrange module, be used for for different user and/or priority revision weights corresponding to business setting, described priority revision weights are according to control area resource information available in the subframe, and different user and/or professional required control area resource information are determined; Wherein, resource distribution is carried out according to maximum number of symbols in described control area, described priority revision weights are according to control area resource information available in the subframe, and, different user and/or professional required control area resource information are determined, specifically comprise: in same subframe group, described priority revision weights improve according to the increase of different user and/or professional transport block size, the minimizing of the resource information that perhaps takies according to different user and/or professional required PDCCH form and improving; Perhaps, for same user and/or class of service, according to the increase of the REG number that can be used for distributing PDCCH in the subframe and improve;
Priority update value computing module is used for obtaining different user and/or professional corresponding priority original value, utilizes described priority revision weights that the priority original value of correspondence is adjusted into the priority update value;
Scheduler module is used for user and/or business being dispatched according to described priority update value in current subframe.
9. device as claimed in claim 8, it is characterized in that, described different user and/or professional required control area resource information comprise: the resource information that different user and/or professional required PDCCH form take, and/or, the size information of different user and/or professional each transmission data block;
Described priority revision weights arrange module and comprise:
User/business classification submodule, for the resource information that takies according to different user and/or professional required PDCCH form, and/or the size information of different user and/or professional each transmission data block is the N class with different user and/or delineation of activities; Wherein, described N is positive integer;
The first priority arranges submodule, is used for according to the different available control area resource informations of descending sub frame, and different user in the corresponding subframe and/or professional classification are arranged different priority revision weights.
10. device as claimed in claim 8 is characterized in that, control area resource information available in the described subframe is: the REG number that can be used for distributing PDCCH in the subframe; Described different user and/or professional required control area resource information comprise: the size information of the resource information that different user and/or professional required PDCCH form take and/or different user and/or professional each transmission data block;
Described priority revision weights arrange module and comprise:
Subframe grouping submodule for the REG number that can be used for distributing PDCCH according to subframe, is divided into the M group with different descending sub frames, and described M is positive integer;
User/business classification submodule, for the resource information that takies according to different user and/or professional required PDCCH form, and/or the size information of different user and/or professional each transmission data block is the N class with different user and/or delineation of activities; Described N is positive integer;
The second priority arranges submodule, is used for for each subframe group m, according to different user and/or professional classification n different priority revision weights β is set
MnWherein, 0＜β
Mn≤ 1, m=1 ... M, n=1 ... N.
11. device as claimed in claim 10 is characterized in that, described priority revision weights arrange module and also comprise:
Subframe group sequence number distribution sub module is used for described subframe group according to corresponding REG number Allotment Serial Number m from high to low, m=1 ... M;
User/class of service sequence number distribution sub module is used for according to the size information of user and/or professional each transmission data block descending to different user and/or professional classification Allotment Serial Number n; Perhaps, the resource information that takies according to user and/or professional required PDCCH form is Allotment Serial Number n from low to high; Wherein, n=1 ... N;
Described priority revision weights β
MnMeet the following conditions:
1) in subframe group m, when n＜n ', β
Mnβ
Mn ', and β
MN=1; M ≠ 1 wherein;
2) for same user and/or class of service n, as m〉during m ', β
Mn＜β
M ' n, and β
1n=1; N ≠ N wherein.
12. device as claimed in claim 10 is characterized in that, described priority revision weights arrange module and also comprise:
The REG calculating sub module is used for calculating in real time according to system bandwidth, uplink-downlink configuration type, PHICH Group number and subframe numbering, can be used for distributing the REG number of PDCCH in the acquisition subframe.
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| PCT/CN2012/070584 WO2012097741A1 (en) | 2011-01-21 | 2012-01-19 | Td-lte system resource scheduling method and apparatus |
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| EP2742637A1 (en) | 2011-08-12 | 2014-06-18 | Interdigital Patent Holdings, Inc. | Method for channel estimation and pilot reception for remote radio head (rrh) deployments and multi-antenna downlink mimo |
| US9866355B2 (en) | 2011-10-10 | 2018-01-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Service aware interference management |
| CN106559843B (en) * | 2015-09-25 | 2019-10-25 | 上海诺基亚贝尔股份有限公司 | A method of supporting a variety of QoS in the operation for listening to before session |
| CN105554886A (en) * | 2015-12-04 | 2016-05-04 | 京信通信技术(广州)有限公司 | Method and device for resource scheduling |
| CN105472656B (en) * | 2015-12-16 | 2019-05-10 | 广州市贝讯通信技术有限公司 | Internet resources equalization methods and server |
| CN105376807B (en) * | 2015-12-16 | 2019-06-14 | 广州市贝讯通信技术有限公司 | A kind of Internet resources equalization methods and server |
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| CN101039160A (en) * | 2006-03-17 | 2007-09-19 | 华为技术有限公司 | Multiplexing system, method for sharing control channel resource and reception equipment thereof |
| CN101820669A (en) * | 2010-01-28 | 2010-09-01 | 北京邮电大学 | Method and device for allocating PDCCH resources |
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| CN101715235B (en) * | 2008-10-08 | 2012-06-06 | 中兴通讯股份有限公司 | Method for allocating resources and scheduling downlink of LTE FDD system |
| CN101873704A (en) * | 2009-04-24 | 2010-10-27 | 大唐移动通信设备有限公司 | Method, system and equipment for resource scheduling in long-term evolution system |
| CN102036397B (en) * | 2011-01-21 | 2013-03-20 | 大唐移动通信设备有限公司 | Resource scheduling method and device of TD-LTE (Time Division-Long Term Evolution) system |
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| WO2003030407A1 (en) * | 2001-09-29 | 2003-04-10 | Lg Electronics Inc. | Method for transferring and /or receiving data in communication system and apparatus thereof |
| CN101039160A (en) * | 2006-03-17 | 2007-09-19 | 华为技术有限公司 | Multiplexing system, method for sharing control channel resource and reception equipment thereof |
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