CN103702426A - Carrier scheduling method - Google Patents
Carrier scheduling method Download PDFInfo
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- CN103702426A CN103702426A CN201310714501.1A CN201310714501A CN103702426A CN 103702426 A CN103702426 A CN 103702426A CN 201310714501 A CN201310714501 A CN 201310714501A CN 103702426 A CN103702426 A CN 103702426A
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Abstract
The invention provides a carrier scheduling method, which comprises the steps: in the time domain scheduling phase of a subframe, judging whether the subframe is a subframe which is allowed by a cross-carrier scheduling terminal to carry out downlink data transmission, if yes, a method for preselecting a terminal comprises the step of selecting a preselected terminal of a first set number in the cross-carrier scheduling terminal which allows the subframe to carry out downlink data transmission. In the embodiment of the invention, in the time domain scheduling phase of the subframe, when the subframe is a subframe which is allowed by the cross-carrier scheduling terminal to carry out downlink data transmission, that the preselected terminal comprises a certain amount of cross-carrier scheduling terminals can be guaranteed by selecting the cross-carrier scheduling terminal which allows the subframe to carry out downlink data transmission according to the preset rules, so that the phenomenon of reasonable scheduling caused by the fact that the opportunity for obtaining downlink scheduling and resource allocation in the member carrier of the cross-carrier scheduling terminal is less than that of the terminal which does not perform cross-carrier scheduling can be avoided.
Description
Technical field
The present invention relates to communication field, in particular, relate to a kind of carrier scheduling method.
Background technology
Base station is according to each terminal of access business transmission demand separately, and the process that Radio Resource is distributed to each terminal according to time domain and two dimensions of frequency domain with certain standard is called scheduling.
The feature of dividing based on LTE Radio Resource, when each subframe is dispatched, two stages of domain scheduling and frequency domain dispatching when scheduling process can correspondingly be divided into.
At time domain scheduling phase, according to the desired business transmission quantity of each terminal and qos parameter, nearest average transmission rate and the quality of wireless channel of terminal, according to repeating query (Round Robin, RR) rule or equitable proportion (Proportional Fair, PF) rule, for each terminal is calculated a priority.All terminals are being lined up after a queue according to priority order from high to low, top several terminals in queue are being entered to the frequency domain dispatching of next stage, other-end is eliminated.This process is also referred to as the preliminary election to terminal.
In the frequency domain dispatching stage, according to priority, be followed successively by the PRB resource of each this subframe of terminal distribution of selecting in advance, business demand amount and the channel gain on each different PRB (being the frequency selectivity of channel) of this terminal considered in minute timing.Because the amount of calculation of frequency domain dispatching is larger, time domain scheduling one of effect be exactly only to select in advance a part of terminal to reduce the amount of calculation of frequency domain dispatching.Design good dispatching algorithm and should guarantee that traffic carrying capacity, QoS demand and the channel quality terminal in peer-level obtains the preliminary election chance of approximate equality.
Development along with LTE-Advanced, has proposed carrier aggregation technology, stipulates that a terminal can be used a plurality of different member carriers simultaneously, independently carries out the transmission of up-downgoing data on each carrier wave.Several member carriers that allow to belong in different frequency bands due to carrier aggregation technology participate in polymerization, and like this, each member carrier just may have different uplink-downlink configuration.In all terminals of certain member carrier transmitting data, a part of terminal of being dispatched by other member carriers, we are called the terminal of carrying out across carrier dispatching.
For example, main member carrier PCC and two auxiliary member carrier SCC1, SCC2 participate in polymerization, suppose that PDSCH on SCC1 is across the PDSCH on carrier dispatching SCC2.According to agreement regulation, across carrier dispatching in the situation that, at certain descending or special subframe of SCC2, the in the situation that of being also descending or special subframe on PCC and SCC1, just allow SCC1 across carrier dispatching SCC2 simultaneously.
Inventor finds through research, if the descending sub frame on PCC and SCC1 is less, descending sub frame on SCC2 is more, according to dispatching method of the prior art, all terminals are lined up to the words that preliminary election is carried out in a queue, so under traffic carrying capacity, QoS demand and the prerequisite of channel quality in peer-level, the chance that the descending scheduling obtaining at this member carrier across the terminal of carrier dispatching and resource are distributed just may be less than the terminal of not carrying out across carrier dispatching, thereby has caused rational not scheduling result.
Summary of the invention
In view of this, the invention provides a kind of carrier scheduling method, to realize, make more reasonably object of scheduling result.
For achieving the above object, the invention provides following technical scheme:
A carrier scheduling method, comprising:
At the time domain scheduling phase of subframe, judge whether described subframe is across carrier dispatching terminal, to allow to carry out the subframe of downlink data transmission, and if so, the method for preliminary election terminal comprises:
Allow described subframe carry out downlink data transmission across carrier dispatching terminal in select the preliminary election terminal of the first setting number.
Preferably, in embodiments of the present invention, the method for described preliminary election terminal also comprises:
When described first sets number and be less than total preliminary election number of default described subframe preliminary election terminal, in the non-preliminary election terminal of selecting the second setting number in across carrier dispatching terminal that allows that described subframe carries out downlink data transmission, supply described total preliminary election number.
Preferably, in embodiments of the present invention, described allow described subframe carry out downlink data transmission across carrier dispatching terminal in select the preliminary election terminal of the first setting number, comprising:
According to formula K
1=(KMN
1)/[(N
0+ N
1) M
1], obtain allowing described subframe to carry out the pre-selection qualification number obtaining across carrier dispatching terminal of downlink data transmission;
According to formula K '
1=min{K
1, K}, obtains allowing described subframe to carry out the actual preliminary election number obtaining across carrier dispatching terminal of downlink data transmission;
From allow described subframe carry out downlink data transmission across carrier dispatching terminal in select K '
1individual terminal is preliminary election terminal;
Wherein, K is total preliminary election number of each subframe preliminary election terminal; K
1for allowing described subframe, carry out the pre-selection qualification number obtaining across carrier dispatching terminal of downlink data transmission; K '
1for allowing described subframe to carry out the actual preliminary election number obtaining across carrier dispatching terminal of downlink data transmission, described first set number; M is the quantity of subframe in member carrier; M
1for allowing to carry out the quantity of the subframe of downlink data transmission; N
0quantity for the non-terminal across carrier dispatching; N
1quantity for the terminal across carrier dispatching.
Preferably, in embodiments of the present invention, describedly in the non-preliminary election terminal of selecting the second setting number in across carrier dispatching terminal that allows that described subframe carries out downlink data transmission, supply described total preliminary election number, comprising:
Work as K>K
1time, certainly allow described subframe to carry out selecting K-K in the non-terminal across carrier dispatching of downlink data transmission
1individual terminal is preliminary election terminal.
Preferably, in embodiments of the present invention, described allow described subframe carry out downlink data transmission across carrier dispatching terminal in select the preliminary election terminal of the first setting number;
When described first sets number and be less than total preliminary election number of default described subframe preliminary election terminal, in the non-preliminary election terminal of selecting the second setting number in across carrier dispatching terminal that allows that described subframe carries out downlink data transmission, supply described total preliminary election number; Comprise:.
Difference according to subframe that can scheduled transmission data across carrier dispatching terminal, will be divided into termination set 1 and termination set 2 across carrier dispatching terminal;
By sub-frame division, be subframe collection D1, subframe collection D2, subframe collection D12 and subframe collection D0; Wherein, subframe set that can only can scheduled transmission data by termination set 1 is subframe collection D1, and subframe set that can only can scheduled transmission data by termination set 2 is subframe collection D2, and the subframe set that termination set 1 and termination set 2 all can scheduled transmission data is subframe collection D12; The subframe set of the equal non-scheduling transmission of termination set 1 and termination set 2 data is subframe collection D0; If described subframe collection D, subframe collection D
12, subframe collection D
1, and subframe collection D
2number of sub-frames in set is respectively M, M
12, M
1and M
2;
If total preliminary election number of each subframe preliminary election terminal is K, according to formula K
12=[KM (N
1+ N
2)]/[N (M
12+ M
1+ M
2)], obtain the number summation of the pre-selection qualification that in subframe collection D1, subframe collection D2 and subframe collection D12, each subframe obtains in termination set 1 and termination set 2;
According to formula K
01=(KMN
1)/[N (M
12+ M
1)], obtain the number of the pre-selection qualification that each subframe in subframe collection D1 and subframe collection D12 obtains in termination set 1;
According to formula K
02=(KMN
2)/[N (M
12+ M
2)], obtain the number of the pre-selection qualification that the subframe in subframe collection D2 and subframe collection D12 obtains in termination set 2;
Work as K
01>K
12time,
According to formula K '
01=min{K
01, K}, obtains subframe collection D
12with subframe collection D
1in each subframe while carrying out during domain scheduling, the number of the actual preliminary election obtaining from the terminal of termination set 1; In the terminal of self terminal collection 1, select K '
01individual terminal is preliminary election terminal; From non-, select K-K ' in across carrier dispatching terminal
01individual terminal is preliminary election terminal;
According to formula K '
02=min{ (KMN
2}/(NM
2), K}, obtains subframe collection D
2in each subframe while carrying out during domain scheduling, the number of the actual preliminary election that terminal obtains from termination set 2; In the terminal of self terminal collection 2, select K '
2individual terminal is preliminary election terminal; From non-, select K-K ' in across carrier dispatching terminal
2individual terminal is preliminary election terminal.
Preferably, in embodiments of the present invention, described allow described subframe carry out downlink data transmission across carrier dispatching terminal in select the preliminary election terminal of the first setting number, also comprise:
Work as K
02>K
12time,
According to formula K '
02=min{K
02, K}, obtains subframe collection D
12with subframe collection D
2in each subframe while carrying out during domain scheduling, from termination set 2 number of the actual preliminary election that obtains of terminal; In self terminal collection 2, select K '
2individual terminal is preliminary election terminal; From non-, select K-K ' in across carrier dispatching terminal
02individual terminal is preliminary election terminal;
According to formula K '
01=min{ (KMN
1)/(NM
1), K}, obtains subframe collection D
1in each subframe while carrying out during domain scheduling, the number of the actual preliminary election that terminal obtains from termination set 1; In self terminal collection 1, select K '
01individual terminal is preliminary election terminal; From non-, select K-K ' in across carrier dispatching terminal
01individual terminal is preliminary election terminal.
Preferably, in embodiments of the present invention, described allow described subframe carry out downlink data transmission across carrier dispatching terminal in select the preliminary election terminal of the first setting number, also comprise:
Work as K
01≤ K
12and K
02≤ K
12time,
Subframe collection D
12in the summation of number of the pre-selection qualification that obtains of the terminal of each subframe in termination set 1 and termination set 2 be K '
12(M
12+ M
1+ M
2) individual, wherein, K '
12=min{K
12, K};
Subframe collection D
12in the number of the pre-selection qualification that obtains in the terminal of termination set 1 of each subframe be K '
12n
1(M
12+ M
1+ M
2)/(N
1+ N
2) individual;
To subframe collection D
12in each subframe while carrying out during domain scheduling, self terminal integrates the number of the actual preliminary election that the terminal in 1 obtains as K '
01=K '
12[N
1(M
12+ M
2)-N
2m
1]/[(N
1+ N
2) M
12] individual; Self terminal integrates the number of the actual preliminary election that the terminal in 2 obtains as K '
12-K '
01; From what allow that described subframe carries out downlink data transmission, non-ly select K-K ' in across carrier dispatching terminal
12individual terminal is preliminary election terminal;
To subframe collection D
1in each subframe while carrying out during domain scheduling, self terminal integrates the number of the actual preliminary election that the terminal in 1 obtains as K '
12; From what allow that described subframe carries out downlink data transmission, non-ly select K-K ' in across carrier dispatching terminal
12individual terminal is preliminary election terminal;
To subframe collection D
2in each subframe while carrying out during domain scheduling, self terminal integrates the number of the actual preliminary election that the terminal in 2 obtains as K '
12; From what allow that described subframe carries out downlink data transmission, non-ly select K-K ' in across carrier dispatching terminal
12individual terminal is preliminary election terminal.
Known via above-mentioned technical scheme, in embodiments of the present invention, at the time domain scheduling phase of subframe, when subframe is when allowing to carry out the subframe of downlink data transmission across carrier dispatching terminal; By the permission subframe of setting being carried out to selecting across carrier dispatching terminal of downlink data transmission according to preset rules, guarantee to include in preliminary election terminal some across carrier dispatching terminal, thereby the chance of avoiding the descending scheduling that obtains due to the terminal across carrier dispatching and resource to distribute is less than, do not carry out the irrational phenomenon of scheduling result that the terminal across carrier dispatching causes in member carrier.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skills, do not paying under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
Fig. 1 is the step schematic diagram of preliminary election terminal method described in the embodiment of the present invention;
Fig. 2 is the another step schematic diagram of preliminary election terminal method described in the embodiment of the present invention;
Fig. 3 is the another step schematic diagram of preliminary election terminal method described in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of carrier scheduling method, comprising:
At the time domain scheduling phase of subframe, when described subframe is when allowing to carry out the subframe of downlink data transmission across carrier dispatching terminal, the method for preliminary election terminal comprises:
Allow described subframe carry out downlink data transmission across carrier dispatching terminal in select the preliminary election terminal of the first setting number.
Make have higher chance to enter preliminary election terminal across carrier dispatching terminal when guaranteeing preliminary election terminal, in embodiments of the present invention, preliminary election terminal time, the dispatch terminal that subframe is carried out to downlink data transmission is divided into across carrier dispatching terminal and non-across two kinds, carrier dispatching terminal; Like this, by guaranteeing to select the preliminary election terminal of setting number in across carrier dispatching terminal, avoid in prior art, likely there will be the terminal across carrier dispatching, the chance that the descending scheduling obtaining at this member carrier and resource are distributed is less than the phenomenon of not carrying out across the terminal of carrier dispatching.
Concrete, in the situation that total number of the preliminary election terminal of each subframe is certain, time domain scheduling phase in subframe, first judge whether described subframe is across carrier dispatching terminal, to allow to carry out the subframe of downlink data transmission, if so, separately allow described subframe carry out downlink data transmission across carrier dispatching terminal in select the preliminary election terminal of the first setting number.If first sets number, select across carrier dispatching terminal number, also do not arrive total number of preliminary election terminal of subframe time, the non-preliminary election terminal of selecting the second setting number in across carrier dispatching terminal that now, can also allow that described subframe carries out downlink data transmission.Like this, the method for preliminary election terminal just can as shown in Figure 1, comprise step:
S11, allow described subframe carry out downlink data transmission across carrier dispatching terminal in select the preliminary election terminal of the first setting number;
S12, when described first sets number and is less than total preliminary election number of default described subframe preliminary election terminal, in the non-preliminary election terminal of selecting the second setting number in across carrier dispatching terminal that allows that described subframe carries out downlink data transmission, supply described total preliminary election number.
In actual applications, can pass through default formula, according to certain step, realize the method for preliminary election terminal, concrete, can comprise:
On a certain member carrier, the set of establishing its descending sub frame is D, and the quantity of establishing set D is M, this member carrier carry out across the dispatch terminal of ripple scheduling can scheduled transmission data the set of descending sub frame be D
1, establish set D
1quantity be M
1, that is, and set D
1for allow to carry out the subframe of downlink data transmission across carrier dispatching terminal; Set D
1for the proper subclass of set D, gather in D by non-set D
1subframe form subframe set D
0for not carrying out the subframe across carrier dispatching.
After above-mentioned division, just can be at the time domain scheduling phase of subframe, by judging whether subframe belongs to set D
1judge whether this subframe is across carrier dispatching terminal, to allow to carry out the subframe of downlink data transmission; If so, the method for now preliminary election terminal can as shown in Figure 2, comprise:
S21, according to formula K
1=(KMN
1)/[(N
0+ N
1) M
1], obtain allowing described subframe to carry out the pre-selection qualification number obtaining across carrier dispatching terminal of downlink data transmission;
In above-mentioned formula, K is total preliminary election number of each subframe preliminary election terminal; K
1for allowing described subframe, carry out the pre-selection qualification number obtaining across carrier dispatching terminal of downlink data transmission; M is the quantity of subframe in member carrier; M
1for allowing to carry out the quantity of the subframe of downlink data transmission; N
0quantity for the non-terminal across carrier dispatching; N
1for carrying out the quantity across the terminal of carrier dispatching.
In embodiments of the present invention, for allow to carry out the subframe of downlink data transmission across carrier dispatching terminal, this subframe is carried out to the dispatch terminal of downlink data transmission and divide, specifically can comprise, across carrier dispatching terminal and non-across these two kinds, carrier dispatching terminal.
Due to scheduler, at time domain scheduling phase, in the preliminary election number of each descending sub frame preliminary election terminal, be K, in member carrier, the quantity of subframe is M, so, in whole descending sub frames, need the KM that adds up to of the terminal number selected in advance.For guarantee across carrier dispatching terminal in preliminary election terminal quantitative proportion, set D
1in subframe in, the pre-selection qualification number obtaining across carrier dispatching terminal that each subframe need to be selected in advance can be K
1=(KMN
1)/[(N
0+ N
1) M
1].
S22, according to formula K '
1=min{K
1, K}, obtains allowing described subframe to carry out the actual preliminary election number obtaining across carrier dispatching terminal of downlink data transmission; Wherein, K '
1for allowing described subframe to carry out the actual preliminary election number obtaining across carrier dispatching terminal of downlink data transmission, described first set number.
In acquisition, allow described subframe to carry out the pre-selection qualification number K obtaining across carrier dispatching terminal of downlink data transmission
1after, likely there is K
1the situation of >K:
Work as K
1during >K, illustrate and now use set D
1in subframe cannot meet the descending scheduling transmission demand data across carrier dispatching terminal completely, in this case, need to make D
1subframe in set must be all by use the descending scheduling transmission data demand that could meet to greatest extent across carrier dispatching terminal across carrier dispatching terminal.Therefore, can make K '
1=min{K
1, K}, like this, at K
1, the selection smaller in two numerical value of K is as allowing described subframe to carry out the actual preliminary election number obtaining across carrier dispatching terminal of downlink data transmission.
S23, certainly allow described subframe carry out downlink data transmission across selecting K ' in carrier dispatching terminal
1individual terminal is preliminary election terminal;
Allow described subframe to carry out the actual preliminary election number K ' obtaining across carrier dispatching terminal of downlink data transmission having obtained
1after, just can certainly allow described subframe carry out downlink data transmission across carrier dispatching terminal according to the mode of existing preliminary election terminal, carried out preliminary election terminal, such as, can be according to each across the desired business transmission quantity of carrier dispatching terminal and qos parameter, nearest average transmission rate and the quality of wireless channel of terminal, according to repeating query rule or equitable proportion rule, for each calculates a priority across carrier dispatching terminal.By all, across carrier dispatching terminal, according to priority order from high to low, lining up after a queue, top several in queue are being entered to the frequency domain dispatching of next stage across carrier dispatching terminal.
Further, in embodiments of the present invention, in acquisition, allow described subframe to carry out the pre-selection qualification number K obtaining across carrier dispatching terminal of downlink data transmission
1after, also likely there is K
1the situation of >K:
Work as K>K
1time, illustrate and now use set D
1in subframe under the prerequisite meeting completely across the descending scheduling transmission demand data of carrier dispatching terminal, also have surplus across carrier dispatching terminal, to provide descending scheduling data service for non-, for this reason, can be to certainly allowing described subframe to carry out selecting K-K in the non-terminal across carrier dispatching of downlink data transmission
1individual terminal is preliminary election terminal.
Now, to D
1when carrying out, each subframe in set during domain scheduling, should from carry out the dispatch terminal queue across carrier dispatching, select in advance K '
1individual terminal, from non-across selecting in advance K-K ' carrier dispatching terminal queue
1individual terminal.
Pair set D
0in each subframe while carrying out during domain scheduling, while carrying out preliminary election terminal, only need to from the non-dispatch terminal queue across carrier dispatching, select in advance K terminal.
Take certain base station below has the carrier wave A of two 20MHz and B the embodiment of the present invention to be described as example, carrier wave A is used uplink-downlink configuration 2 (subframe 0,3,4,5,8,9 is descending sub frame), and carrier wave B is used uplink-downlink configuration 1 (subframe 0,4,5,9 is descending sub frame).Suppose to have accessed on carrier wave A 40 terminals; On carrier wave B, accessed 20 terminals, these 20 terminals can be used again carrier wave A as auxiliary carrier wave, and by carrier wave B, carrier wave A are carried out across carrier dispatching.Now, during the domain scheduling when carrying out of the downlink scheduler on carrier wave A, known D={0,3,4,5,8,9}, D
1=[0,4,5,9}, D
0={ 3,8}, M=6, M
1=4, N
0=40, N
1=20.Suppose that scheduler selects K=10 terminal at time domain scheduling phase in advance in each subframe, can obtain K
1=(10 * 6 * 20)/[(40+20) * 4]=5.Therefore, in subframe 0,4,5,9, should in the terminal queue of carrier wave A access, select in advance 5, carrier wave B access across carrier dispatching terminal queue in also select in advance 5; Rather than above-mentioned 60 terminals are lined up to a queue and select in advance altogether 10.Because the latter on average can only select in advance the terminal of 10/3 carrier wave B access in subframe 0,4,5,9, can only acquisition ratio in all descending sub frames the chance chosen of the preliminary election that is 2/9, the ratio that accounts for total number of terminals lower than this kind of terminal quantity 1/3.
In another embodiment of the present invention, the concrete method of setting across carrier dispatching terminal number when another kind of preliminary election terminal is also provided, specifically comprises:
When S31, preliminary election terminal, first, according to the difference of subframe that can scheduled transmission data across carrier dispatching terminal, will be divided into termination set 1 and termination set 2 across carrier dispatching terminal;
S32, by sub-frame division, be subframe collection D1, subframe collection D2, subframe collection D12 and subframe collection D0; Wherein, subframe set that can only can scheduled transmission data by termination set 1 is subframe collection D1, and subframe set that can only can scheduled transmission data by termination set 2 is subframe collection D2, and the subframe set that termination set 1 and termination set 2 all can scheduled transmission data is subframe collection D12; The subframe set of the equal non-scheduling transmission of termination set 1 and termination set 2 data is subframe collection D0; If described subframe collection D, subframe collection D
12, subframe collection D
1, and subframe collection D
2number of sub-frames in set is respectively M, M
12, M
1and M
2;
S33, total preliminary election number of establishing each subframe preliminary election terminal are K, according to formula K
12=[KM (N
1+ N
2)]/[N (M
12+ M
1+ M
2)], obtain the number summation of the pre-selection qualification that in subframe collection D1, subframe collection D2 and subframe collection D12, each subframe obtains in termination set 1 and termination set 2;
According to formula K
01=(KMN
1)/[N (M
12+ M
1)], obtain the number of the pre-selection qualification that each subframe in subframe collection D1 and subframe collection D12 obtains in termination set 1;
According to formula K
02=(KMN
2)/[N (M
12+ M
2)], obtain the number of the pre-selection qualification that the subframe in subframe collection D2 and subframe collection D12 obtains in termination set 2;
The number summation K of the pre-selection qualification that each subframe obtains in termination set 1 and termination set 2 in getting above-mentioned subframe collection D1, subframe collection D2 and subframe collection D12
12, the pre-selection qualification that obtains in termination set 2 of the subframe in subframe collection D2 and subframe collection D12 number K
01, and, the number K of the pre-selection qualification that the subframe in subframe collection D2 and subframe collection D12 obtains in termination set 2
02after, the big or small comparison according to these numerical value, can be handled as follows:
Work as K
01>K
12time, illustrate across the resource requirement of the termination set 1 of carrier dispatching more harsh, at this moment at D
12corresponding subframe not should be termination set 2 provides preliminary election chance.For this reason, can be according to formula K '
01=min{K
01, K}, obtains subframe collection D
12with subframe collection D
1in each subframe while carrying out during domain scheduling, the number of the actual preliminary election obtaining from the terminal of termination set 1; In the terminal of self terminal collection 1, select K '
01individual terminal is preliminary election terminal; From non-, select K-K ' in across carrier dispatching terminal
01individual terminal is preliminary election terminal;
According to formula K '
02=min{ (KMN
2)/(NM
2), K}, obtains subframe collection D
2in each subframe while carrying out during domain scheduling, the number of the actual preliminary election that terminal obtains from termination set 2; In the terminal of self terminal collection 2, select K '
2individual terminal is preliminary election terminal; From non-, select K-K ' in across carrier dispatching terminal
2individual terminal is preliminary election terminal.
Work as K
02>K
12time, illustrate across the resource requirement of the termination set 2 of carrier dispatching more harsh, at this moment at D
12corresponding subframe not should be termination set 1 provides preliminary election chance.For this reason, can be according to formula K '
02=min{K
02, K}, obtains subframe collection D
12with subframe collection D
2in each subframe while carrying out during domain scheduling, from termination set 2 number of the actual preliminary election that obtains of terminal; In self terminal collection 2, select K '
2individual terminal is preliminary election terminal; From non-, select K-K ' in across carrier dispatching terminal
02individual terminal is preliminary election terminal;
According to formula K '
01=min{ (KMN
1)/(NM
1), K}, obtains subframe collection D
1in each subframe while carrying out during domain scheduling, the number of the actual preliminary election that terminal obtains from termination set 1; In self terminal collection 1, select K '
01individual terminal is preliminary election terminal; From non-, select K-K ' in across carrier dispatching terminal
01individual terminal is preliminary election terminal.
Work as K
01≤ K
12and K
02≤ K
12time, illustrate at D
12in the subframe comprising, can all provide preliminary election chance for the termination set 1 across carrier dispatching and termination set 2.Now, subframe collection D
12in the summation of number of the pre-selection qualification that obtains of the terminal of each subframe in termination set 1 and termination set 2 be K '
12(M
12+ M
1+ M
2) individual, wherein, K '
12=min{K
12, K};
Subframe collection D
12in the number of the pre-selection qualification that obtains in the terminal of termination set 1 of each subframe be K '
12n
1(M
12+ M
1+ M
2)/(N
1+ N
2) individual;
To subframe collection D
12in each subframe while carrying out during domain scheduling, self terminal integrates the number of the actual preliminary election that the terminal in 1 obtains as K '
01=K '
12[N1 (M
12+ M
2)-N
2m
1]/[(N
1+ N
2) M
12] individual; Self terminal integrates the number of the actual preliminary election that the terminal in 2 obtains as K '
12-K '
01; From what allow that described subframe carries out downlink data transmission, non-ly select K-K ' in across carrier dispatching terminal
12individual terminal is preliminary election terminal;
To subframe collection D
1in each subframe while carrying out during domain scheduling, self terminal integrates the number of the actual preliminary election that the terminal in 1 obtains as K '
12; From what allow that described subframe carries out downlink data transmission, non-ly select K-K ' in across carrier dispatching terminal
12individual terminal is preliminary election terminal;
To subframe collection D
2in each subframe while carrying out during domain scheduling, self terminal integrates the number of the actual preliminary election that the terminal in 2 obtains as K '
12; From what allow that described subframe carries out downlink data transmission, non-ly select K-K ' in across carrier dispatching terminal
12individual terminal is preliminary election terminal.
Take certain base station below has carrier wave A, the B of three 20MHz and C the embodiment of the present invention to be described as example, carrier wave A is used uplink-downlink configuration 2 (subframe 0,3,4,5,8,9 is descending sub frame), carrier wave B is used uplink-downlink configuration 1 (subframe 0,4,5,9 is descending sub frame), and carrier wave C is used uplink-downlink configuration 5 (subframe 0,5,9 is descending sub frame).Suppose respectively to have accessed on carrier wave A, B and C 20 terminals; The terminal of the upper access of carrier wave B, C can be used again carrier wave A as auxiliary carrier wave, and by carrier wave B, C, carrier wave A is carried out across carrier dispatching respectively.The time domain scheduling problem of the downlink scheduler on carrier wave A is discussed below.Known D={0,3,4,5,8,9}, D
12={ 0,5,9}, D
1=4},
d
0={ 3,8}, M=6, M
12=3, M
1=1, M
2=0, N
0=N
1=N
2=20.Suppose that scheduler selects K=10 terminal at time domain scheduling phase in advance in each subframe, can obtain k
12=(10 * 6 * 40)/(60 * 4)=10, K
1=(10 * 6 * 20)/(60 * 4)=5, K
2=(10 * 6 * 20)/(60 * 3)=20/3.Corresponding aforementioned the 3rd kind of situation.And then obtain K '
1=[10 * (20 * 3-20 * 1)]/(40 * 3) ≈ 3, k '
2≈ 7.Therefore, in subframe 0,5,9, should carrier wave B access across carrier dispatching terminal queue in select in advance 3, carrier wave C access across carrier dispatching terminal queue in select in advance 7; In subframe 4, should carrier wave B access across carrier dispatching terminal queue in select in advance 10; In subframe 3,8, should in the terminal queue of carrier wave B access, select in advance 10.Above-mentioned like this three Terminal Types have obtained comparatively impartial frequency domain dispatching chance.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.For the device providing for embodiment, because its method providing with embodiment is corresponding, so description is fairly simple, relevant part partly illustrates referring to method.
Above-mentioned explanation to provided embodiment, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle provided in this article and features of novelty.
Claims (7)
1. a carrier scheduling method, is characterized in that, comprising:
At the time domain scheduling phase of subframe, judge whether described subframe is across carrier dispatching terminal, to allow to carry out the subframe of downlink data transmission, and if so, the method for preliminary election terminal comprises:
Allow described subframe carry out downlink data transmission across carrier dispatching terminal in select the preliminary election terminal of the first setting number.
2. according to carrier scheduling method described in claim 1, it is characterized in that, the method for described preliminary election terminal also comprises:
When described first sets number and be less than total preliminary election number of default described subframe preliminary election terminal, in the non-preliminary election terminal of selecting the second setting number in across carrier dispatching terminal that allows that described subframe carries out downlink data transmission, supply described total preliminary election number.
3. according to carrier scheduling method described in claim 1 or 2, it is characterized in that, described allow described subframe carry out downlink data transmission across carrier dispatching terminal in select the preliminary election terminal of the first setting number, comprising:
According to formula K
1=(KMN
1)/[(N
0+ N
1) M
1], obtain allowing described subframe to carry out the pre-selection qualification number obtaining across carrier dispatching terminal of downlink data transmission;
According to formula K '
1=min{K
1, K}, obtains allowing described subframe to carry out the actual preliminary election number obtaining across carrier dispatching terminal of downlink data transmission;
From allow described subframe carry out downlink data transmission across carrier dispatching terminal in select K '
1individual terminal is preliminary election terminal;
Wherein, K is total preliminary election number of each subframe preliminary election terminal; K
1for allowing described subframe, carry out the pre-selection qualification number obtaining across carrier dispatching terminal of downlink data transmission; K '
1for allowing described subframe to carry out the actual preliminary election number obtaining across carrier dispatching terminal of downlink data transmission, described first set number; M is the quantity of subframe in member carrier; M
1for allowing to carry out the quantity of the subframe of downlink data transmission; N
0quantity for the non-terminal across carrier dispatching; N
1quantity for the terminal across carrier dispatching.
4. according to carrier scheduling method described in claim 3, it is characterized in that, describedly in the non-preliminary election terminal of selecting the second setting number in across carrier dispatching terminal that allows that described subframe carries out downlink data transmission, supply described total preliminary election number, comprising:
Work as K>K
1time, certainly allow described subframe to carry out selecting K-K in the non-terminal across carrier dispatching of downlink data transmission
1individual terminal is preliminary election terminal.
5. carrier scheduling method according to claim 2, is characterized in that, described allow described subframe carry out downlink data transmission across carrier dispatching terminal in select the preliminary election terminal of the first setting number;
When described first sets number and be less than total preliminary election number of default described subframe preliminary election terminal, in the non-preliminary election terminal of selecting the second setting number in across carrier dispatching terminal that allows that described subframe carries out downlink data transmission, supply described total preliminary election number; Comprise:.
Difference according to subframe that can scheduled transmission data across carrier dispatching terminal, will be divided into termination set 1 and termination set 2 across carrier dispatching terminal;
By sub-frame division, be subframe collection D1, subframe collection D2, subframe collection D12 and subframe collection D0; Wherein, subframe set that can only can scheduled transmission data by termination set 1 is subframe collection D1, and subframe set that can only can scheduled transmission data by termination set 2 is subframe collection D2, and the subframe set that termination set 1 and termination set 2 all can scheduled transmission data is subframe collection D12; The subframe set of the equal non-scheduling transmission of termination set 1 and termination set 2 data is subframe collection D0; If described subframe collection D, subframe collection D
12, subframe collection D
1, and subframe collection D
2number of sub-frames in set is respectively M, M
12, M
1and M
2;
If total preliminary election number of each subframe preliminary election terminal is K, according to formula K
12=[KM (N
1+ N
2)]/[N (M
12+ M
1+ M
2)], obtain the number summation of the pre-selection qualification that in subframe collection D1, subframe collection D2 and subframe collection D12, each subframe obtains in termination set 1 and termination set 2;
According to formula K
01=(KMN
1)/[N (M
12+ M
1)], obtain the number of the pre-selection qualification that each subframe in subframe collection D1 and subframe collection D12 obtains in termination set 1;
According to formula K
02=(KMN
2)/[N (M
12+ M
2)], obtain the number of the pre-selection qualification that the subframe in subframe collection D2 and subframe collection D12 obtains in termination set 2;
Work as K
01>K
12time,
According to formula K '
01=min{K
01, K}, obtains subframe collection D
12with subframe collection D
1in each subframe while carrying out during domain scheduling, the number of the actual preliminary election obtaining from the terminal of termination set 1; In the terminal of self terminal collection 1, select K '
01individual terminal is preliminary election terminal; From non-, select K-K ' in across carrier dispatching terminal
01individual terminal is preliminary election terminal;
According to formula K '
02=min{ (KMN
2)/(NM
2), K}, obtains subframe collection D
2in each subframe while carrying out during domain scheduling, the number of the actual preliminary election that terminal obtains from termination set 2; In the terminal of self terminal collection 2, select K '
2individual terminal is preliminary election terminal; From non-, select K-K ' in across carrier dispatching terminal
2individual terminal is preliminary election terminal.
6. according to carrier scheduling method described in claim 5, it is characterized in that, described allow described subframe carry out downlink data transmission across carrier dispatching terminal in select the preliminary election terminal of the first setting number, also comprise:
Work as K
02>K
12time,
According to formula K '
02=min{K
02, K}, obtains subframe collection D
12with subframe collection D
2in each subframe while carrying out during domain scheduling, from termination set 2 number of the actual preliminary election that obtains of terminal; In self terminal collection 2, select K '
2individual terminal is preliminary election terminal; From non-, select K-K ' in across carrier dispatching terminal
02individual terminal is preliminary election terminal;
According to formula K '
01=min{ (KMN
1)/(NM
1), K}, obtains subframe collection D
1in each subframe while carrying out during domain scheduling, the number of the actual preliminary election that terminal obtains from termination set 1; In self terminal collection 1, select K '
01individual terminal is preliminary election terminal; From non-, select K-K ' in across carrier dispatching terminal
01individual terminal is preliminary election terminal.
7. according to carrier scheduling method described in claim 6, it is characterized in that, described allow described subframe carry out downlink data transmission across carrier dispatching terminal in select the preliminary election terminal of the first setting number, also comprise:
Work as K
01≤ K
12and K
02≤ K
12time,
Subframe collection D
12in the summation of number of the pre-selection qualification that obtains of the terminal of each subframe in termination set 1 and termination set 2 be K '
12(M
12+ M
1+ M
2) individual, wherein, K '
12=min{K
12, K};
Subframe collection D
12in the number of the pre-selection qualification that obtains in the terminal of termination set 1 of each subframe be K '
12n
1(M
12+ M
1+ M
2)/(N
1+ N
2) individual;
To subframe collection D
12in each subframe while carrying out during domain scheduling, self terminal integrates the number of the actual preliminary election that the terminal in 1 obtains as K '
01=K '
12[N
1(M
12+ M
2)-N
2m
1]/[(N
1+ N
2) M
12] individual; Self terminal integrates the number of the actual preliminary election that the terminal in 2 obtains as K '
12-K '
01; From what allow that described subframe carries out downlink data transmission, non-ly select K-K ' in across carrier dispatching terminal
12individual terminal is preliminary election terminal;
To subframe collection D
1in each subframe while carrying out during domain scheduling, self terminal integrates the number of the actual preliminary election that the terminal in 1 obtains as K '
12; From what allow that described subframe carries out downlink data transmission, non-ly select K-K ' in across carrier dispatching terminal
12individual terminal is preliminary election terminal;
To subframe collection D
2in each subframe while carrying out during domain scheduling, self terminal integrates the number of the actual preliminary election that the terminal in 2 obtains as K '
12; From what allow that described subframe carries out downlink data transmission, non-ly select K-K ' in across carrier dispatching terminal
12individual terminal is preliminary election terminal.
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| CN106455101A (en) * | 2016-10-31 | 2017-02-22 | 中国联合网络通信集团有限公司 | Wireless resource scheduling method and apparatus |
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| US20110268032A1 (en) * | 2008-10-29 | 2011-11-03 | Lg Electronics Inc. | Method for efficiently transmitting physical channel in multi-carrier aggregation state to support broadband |
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| US20110268032A1 (en) * | 2008-10-29 | 2011-11-03 | Lg Electronics Inc. | Method for efficiently transmitting physical channel in multi-carrier aggregation state to support broadband |
| CN101651996A (en) * | 2009-09-17 | 2010-02-17 | 中兴通讯股份有限公司 | Method and system for transmitting index of component carrier and control format indicating value |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106455101A (en) * | 2016-10-31 | 2017-02-22 | 中国联合网络通信集团有限公司 | Wireless resource scheduling method and apparatus |
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