CN103228014A - Cell combined dispatching method and cell combined dispatching system - Google Patents
Cell combined dispatching method and cell combined dispatching system Download PDFInfo
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- CN103228014A CN103228014A CN2013101697672A CN201310169767A CN103228014A CN 103228014 A CN103228014 A CN 103228014A CN 2013101697672 A CN2013101697672 A CN 2013101697672A CN 201310169767 A CN201310169767 A CN 201310169767A CN 103228014 A CN103228014 A CN 103228014A
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Abstract
The invention discloses a cell combined dispatching method. The cell combined dispatching method comprises the steps of: step (102), selecting at least two associated micro cells from a plurality of micro cells and combining the at least two associated micro cells into a cell cluster used for combined dispatching; step (104), coordinating user dispatching information corresponding to each micro cell in the cell cluster and jointly coding the user dispatching information into a combined user dispatching information; and step (106), sending the combined user dispatching information to a terminal served by the cell cluster. The invention also discloses a cell combined dispatching system. By adopting the technical scheme of the invention, densely distributed micro cells can be divided into cell clusters so as to dispatch and coordinate a plurality of micro cells in the same cell cluster, therefore, the transmission reliability of a control signaling containing the user dispatching information is guaranteed.
Description
Technical field
The present invention relates to communication technical field, in particular to a kind of plot joint dispatching method and a kind of plot joint dispatching system.
Background technology
In 3GPP Rel-12, opened the subject study (RP-122032) of Microcell.Microcell has comprised the little base station of Pico() and the Femto(Home eNodeB).The main purpose of this problem is the scene that proposes in the Microcell demand research in early stage (TR36.932), and further optimal design improves spectrum efficiency, reduces control signaling and pilot-frequency expense.Dispose at indoor and hot spot region, statement of requirements points out that the intensive deployment of Microcell can improve user's data speed, but mutual interference is also more serious.The communication reliability that how to solve under the intensive deployment is one of main research range of this problem.
Rel-11 and before in the version, the subject study of some interference eliminated was arranged at Pico and Femto.Pico provides a kind of scheme of focus service distributing, discovers the transmitted power less (comparing with macro base station) owing to the Pico base station, and the effect of service distributing is not too obvious, and the load of Pico has only about 60%.For this reason, 3GPP has proposed cell coverage expansion (Cell Range Expansion) technology, makes terminal preferentially insert the Pico sub-district by access amount of bias (bias) is set.But the terminal of the Pico in CRE zone service receives from the interference power of macro base station very big, 3GPP has carried out eICIC and two problems of feICIC for this reason, by ABS(Almost Blank subframe) technology time-multiplexed the control signal of macro base station and Pico, guaranteed the reliability of control channel.Femto is the Home eNodeB that a kind of user arranges, is linked into core net by modes such as ADSL, and is more random in indoor deployed position, do not pass through the network planning of operator, the very approaching scene of a plurality of Femto may occur.Femto often adopts CSG(Close Subscribe Group simultaneously) configuration, promptly only for authorized user provides service, Femto is often very big to the interference of contiguous unauthorized user.At this problem, 3GPP provides interference management modes such as the control of Femto power, control channel channeling to solve interference problem, can not fine work but be still in the big zone of Femto base station density.
The control signaling of PDCCH carrying has comprised user's schedule information and data message indication, is the guarantee that terminal correctly receives information.Be different from data message, therefore the PDCCH signal can not require error probability to be lower than 1% with technical protections such as HARQ.In 3GPP Rel-11 research, at the less problem of PDCCH carrying dispatch, the capacity that the ePDCCH problem has been expanded down control channel has been proposed.
Yet in the deployment scenario research of 3GPP RAN1, intensive Microcell scene is defined as disposing in the first floor 4 with the frequency Microcell, and this scene is disposed more crypto set than traditional Pico.And emto is different with traditional F, and a plurality of Microcells adopt OSG(Open Subscribe Group) configuration, promptly validated user can insert any Microcell.The covering of a plurality of Microcells overlaps in this scene, annoyance level is all more serious than Pico and the Femto before the Rel-11, existing interference management method can not effectively be eliminated interference, the reliability of signaling transmission is difficult to guarantee, becomes most important and problem demanding prompt solution at present at the signal transmission method of a plurality of strong interferers.
Summary of the invention
The present invention just is being based on the problems referred to above, a kind of plot joint dispatching technology has been proposed, can carry out the division of cell cluster to the Microcell of dense distribution, thereby between a plurality of Microcells in the same cells bunch, dispatch coordination, guarantee to comprise the transmission reliability of the control signaling of user's schedule information.
In view of this, the present invention proposes a kind of plot joint dispatching method, comprising: step 102, from a plurality of Microcells, select at least two Microcells that are associated, and described at least two Microcells that are associated are formed the cell cluster that is used for combined dispatching; Step 104 coordinate user's schedule information of each the Microcell correspondence in the described cell cluster, and combined coding is the federated user schedule information; Step 106 is sent to the terminal of being served by described cell cluster with described federated user schedule information.
In this technical scheme, promptly there is more strongly disturbing Microcell in " Microcell that is associated ", by these Microcells are formed cell cluster, and coordinates user schedule information between all Microcells in cell cluster, thereby when transmission comprises the control signaling of user's schedule information, can avoid receiving the interference between the Microcell, help improving the reliability of control signaling transmission course, satisfy error probability and be lower than 1% requirement.
In technique scheme, preferably, described step 102 comprises: each Microcell in described a plurality of Microcells measure respectively and other Microcell between parameter preset; Wherein, when the numerical value of the parameter preset that measures is less than or equal to presetting first threshold, the Microcell of this parameter preset correspondence is added in the described cell cluster, and/or when the numerical value of the parameter preset between at least one Microcell and other the Microcell during all less than default second threshold value, with described at least one Microcell as a sub-district, and with described sub-district and and at least one described sub-district between the numerical value of the parameter preset Microcell that is less than or equal to described first threshold be added in the described cell cluster.
In this technical scheme, can be according to actual conditions, the numerical value of first threshold, second threshold value etc. is provided with, to be adapted to actual requirement.Two kinds of situations have been proposed: under first kind of situation, after parameter preset and first threshold are compared, directly determine whether herein as the Microcell in the current area bunch; Under second kind of situation, at first select to lift one's head the sub-district, then according to the disturbed condition between other Microcells and this sub-district, thereby determine whether as the Microcell in the current area bunch, wherein, the number of sub-district can be for one or more, when having a plurality of sub-districts simultaneously, help the robustness of current area bunch.Need to prove, particularly, can use above dual mode to carry out the generation of cell cluster separately, also can adopt above dual mode that Microcell is selected simultaneously, if adopt above dual mode simultaneously, then Microcell is in satisfied wherein arbitrary situation or when satisfying two kinds of situations simultaneously, can be added in the current area bunch.
In technique scheme, preferably, described parameter preset comprises: coupling loss and/or return link time delay.
In this technical scheme, only enumerated wherein both comparatively common parameters, but obviously relevant, can reflect that other parameters of the disturbed condition between Microcell also expect easily, should belong within protection scope of the present invention.
In technique scheme, preferably, described step 102 comprises: the measurement report to the pilot signal strength of described a plurality of Microcells that obtains terminal to report; Wherein, when described pilot signal strength during, the Microcell of this pilot signal strength correspondence is added in the described cell cluster more than or equal to default signal strength threshold.
In this technical scheme, except above-mentioned first kind of situation, second kind of situation, the third situation has been proposed also, promptly by the detected pilot signal strength of terminal, thereby judge disturbed condition between the corresponding Microcell, and be divided in the corresponding district bunch.Certainly, the third situation can realize separately, also can realize jointly with first kind of situation, second kind of situation.If adopt above three kinds of modes simultaneously, then Microcell can be added in the current area bunch when satisfied wherein arbitrary situation or satisfied simultaneously three kinds of situations.
In technique scheme, preferably, described step 104 also comprises: by the information receiving and transmitting function of return link and/or terminal, realize the coordination to described user's schedule information between the Microcell in the described cell cluster.
In this technical scheme, particularly, return link between the Microcell in the cell cluster can adopt interfaces such as X2, S1, and can detect the return link time delay, when return link time delay during more than or equal to default time delay numerical value, selection utilizes the information receiving and transmitting function of terminal, realizes the forwarding to harmony messages; When return link time delay during, select to utilize return link directly to transmit harmony messages less than default time delay numerical value.
In technique scheme, preferably, described step 106 also comprises: with in the described cell cluster and the numerical value of the parameter preset between other the Microcell all less than one or more Microcells of the predetermined threshold value of appointment as a sub-district, and send described federated user schedule information by one or more described sub-districts, wherein, described parameter preset comprises coupling loss and/or return link time delay; Or send described federated user schedule information in that identical running time-frequency resource is common by all Microcells in the described cell cluster.
In this technical scheme, send the federated user schedule information jointly by all Microcells, can make the terminal of this information of reception obtain diversity gain.
According to another aspect of the invention, a kind of plot joint dispatching system has also been proposed, comprise: the grouping management unit is used for selecting at least two Microcells that are associated from a plurality of Microcells, and described at least two Microcells that are associated is formed the cell cluster that is used for combined dispatching; Information generating unit be used for coordinating user's schedule information of each Microcell correspondence of described cell cluster, and combined coding is the federated user schedule information; Information transmitting unit is used for described federated user schedule information is sent to the terminal of being served by described cell cluster.
In this technical scheme, promptly there is more strongly disturbing Microcell in " Microcell that is associated ", by these Microcells are formed cell cluster, and coordinates user schedule information between all Microcells in cell cluster, thereby when transmission comprises the control signaling of user's schedule information, can avoid receiving the interference between the Microcell, help improving the reliability of control signaling transmission course, satisfy error probability and be lower than 1% requirement.
In technique scheme, preferably, described grouping management unit comprises: parameter measurement subelement, each Microcell that is used for controlling described a plurality of Microcells measure respectively and other Microcell between parameter preset; The judgment processing subelement, be used for when the numerical value of the parameter preset that measures is less than or equal to presetting first threshold, the Microcell of this parameter preset correspondence is added in the described cell cluster, and/or when the numerical value of the parameter preset between at least one Microcell and other the Microcell during all less than default second threshold value, with described at least one Microcell as a sub-district, and with described sub-district and and at least one described sub-district between the numerical value of the parameter preset Microcell that is less than or equal to described first threshold be added in the described cell cluster.
In this technical scheme, can be according to actual conditions, the numerical value of first threshold, second threshold value etc. is provided with, to be adapted to actual requirement.Two kinds of situations have been proposed: under first kind of situation, after parameter preset and first threshold are compared, directly determine whether herein as the Microcell in the current area bunch; Under second kind of situation, at first select to lift one's head the sub-district, then according to the disturbed condition between other Microcells and this sub-district, thereby determine whether as the Microcell in the current area bunch, wherein, the number of sub-district can be for one or more, when having a plurality of sub-districts simultaneously, help the robustness of current area bunch.Need to prove, particularly, can use above dual mode to carry out the generation of cell cluster separately, also can adopt above dual mode that Microcell is selected simultaneously, if adopt above dual mode simultaneously, then Microcell is in satisfied wherein arbitrary situation or when satisfying two kinds of situations simultaneously, can be added in the current area bunch.
In technique scheme, preferably, described parameter preset comprises: coupling loss and/or return link time delay.
In this technical scheme, only enumerated wherein both comparatively common parameters, but obviously relevant, can reflect that other parameters of the disturbed condition between Microcell also expect easily, should belong within protection scope of the present invention.
In technique scheme, preferably, described grouping management unit comprises: subelement is handled in report, obtain the measurement report to the pilot signal strength of described a plurality of Microcells of terminal to report, when described pilot signal strength during, the Microcell of this pilot signal strength correspondence is added in the described cell cluster more than or equal to default signal strength threshold.
In this technical scheme, except above-mentioned first kind of situation, second kind of situation, the third situation has been proposed also, promptly by the detected pilot signal strength of terminal, thereby judge disturbed condition between the corresponding Microcell, and be divided in the corresponding district bunch.Certainly, the third situation can realize separately, also can realize jointly with first kind of situation, second kind of situation.If adopt above three kinds of modes simultaneously, then Microcell can be added in the current area bunch when satisfied wherein arbitrary situation or satisfied simultaneously three kinds of situations.
In technique scheme, preferably, described information generating unit is controlled the information receiving and transmitting function of passing through return link and/or terminal between the interior Microcell of described cell cluster, realizes the coordination to described user's schedule information.
In this technical scheme, particularly, return link between the Microcell in the cell cluster can adopt interfaces such as X2, S1, and can detect the return link time delay, when return link time delay during more than or equal to default time delay numerical value, selection utilizes the information receiving and transmitting function of terminal, realizes the forwarding to harmony messages; When return link time delay during, select to utilize return link directly to transmit harmony messages less than default time delay numerical value.
In technique scheme, preferably, one or more the sub-districts that described information transmitting unit is controlled in the described cell cluster send described federated user schedule information, or all Microcells of controlling in the described cell cluster send described federated user schedule information jointly at identical running time-frequency resource; Wherein, with in the described cell cluster and the numerical value of the parameter preset between other the Microcell all less than one or more Microcells of the predetermined threshold value of appointment as described sub-district.
In this technical scheme, send the federated user schedule information jointly by all Microcells, can make the terminal of this information of reception obtain diversity gain.
By above technical scheme, can carry out the division of cell cluster to the Microcell of dense distribution, thereby between a plurality of Microcells in the same cells bunch, dispatch coordination, guarantee to comprise the transmission reliability of the control signaling of user's schedule information.
Description of drawings
Fig. 1 shows the flow chart of plot joint dispatching method according to an embodiment of the invention;
Fig. 2 shows the block diagram of plot joint dispatching system according to an embodiment of the invention;
Fig. 3 shows the particular flow sheet of a plurality of according to an embodiment of the invention Microcell combined dispatching user schedule informations.
Embodiment
In order more to be expressly understood above-mentioned purpose of the present invention, feature and advantage, the present invention is further described in detail below in conjunction with the drawings and specific embodiments.Need to prove that under the situation of not conflicting, the application's embodiment and the feature among the embodiment can make up mutually.
A lot of details have been set forth in the following description so that fully understand the present invention; but; the present invention can also adopt other to be different from other modes described here and implement, and therefore, protection scope of the present invention is not subjected to the restriction of following public specific embodiment.
Fig. 1 shows the flow chart of plot joint dispatching method according to an embodiment of the invention.
As shown in Figure 1, plot joint dispatching method according to an embodiment of the invention, comprise: step 102, from a plurality of Microcells, select at least two Microcells that are associated, and described at least two Microcells that are associated are formed the cell cluster that is used for combined dispatching; Step 104 coordinate user's schedule information of each the Microcell correspondence in the described cell cluster, and combined coding is the federated user schedule information; Step 106 is sent to the terminal of being served by described cell cluster with described federated user schedule information.
In this technical scheme, promptly there is more strongly disturbing Microcell in " Microcell that is associated ", by these Microcells are formed cell cluster, and coordinates user schedule information between all Microcells in cell cluster, thereby when transmission comprises the control signaling of user's schedule information, can avoid receiving the interference between the Microcell, help improving the reliability of control signaling transmission course, satisfy error probability and be lower than 1% requirement.
In technique scheme, preferably, described step 102 comprises: each Microcell in described a plurality of Microcells measure respectively and other Microcell between parameter preset; Wherein, when the numerical value of the parameter preset that measures is less than or equal to presetting first threshold, the Microcell of this parameter preset correspondence is added in the described cell cluster, and/or when the numerical value of the parameter preset between at least one Microcell and other the Microcell during all less than default second threshold value, with described at least one Microcell as a sub-district, and with described sub-district and and at least one described sub-district between the numerical value of the parameter preset Microcell that is less than or equal to described first threshold be added in the described cell cluster.
In this technical scheme, can be according to actual conditions, the numerical value of first threshold, second threshold value etc. is provided with, to be adapted to actual requirement.Two kinds of situations have been proposed: under first kind of situation, after parameter preset and first threshold are compared, directly determine whether herein as the Microcell in the current area bunch; Under second kind of situation, at first select to lift one's head the sub-district, then according to the disturbed condition between other Microcells and this sub-district, thereby determine whether as the Microcell in the current area bunch, wherein, the number of sub-district can be for one or more, when having a plurality of sub-districts simultaneously, help the robustness of current area bunch.Need to prove, particularly, can use above dual mode to carry out the generation of cell cluster separately, also can adopt above dual mode that Microcell is selected simultaneously, if adopt above dual mode simultaneously, then Microcell is in satisfied wherein arbitrary situation or when satisfying two kinds of situations simultaneously, can be added in the current area bunch.
In technique scheme, preferably, described parameter preset comprises: coupling loss and/or return link time delay.
In this technical scheme, only enumerated wherein both comparatively common parameters, but obviously relevant, can reflect that other parameters of the disturbed condition between Microcell also expect easily, should belong within protection scope of the present invention.
In technique scheme, preferably, described step 102 comprises: the measurement report to the pilot signal strength of described a plurality of Microcells that obtains terminal to report; Wherein, when described pilot signal strength during, the Microcell of this pilot signal strength correspondence is added in the described cell cluster more than or equal to default signal strength threshold.
In this technical scheme, except above-mentioned first kind of situation, second kind of situation, the third situation has been proposed also, promptly by the detected pilot signal strength of terminal, thereby judge disturbed condition between the corresponding Microcell, and be divided in the corresponding district bunch.Certainly, the third situation can realize separately, also can realize jointly with first kind of situation, second kind of situation.If adopt above three kinds of modes simultaneously, then Microcell can be added in the current area bunch when satisfied wherein arbitrary situation or satisfied simultaneously three kinds of situations.
In technique scheme, preferably, described step 104 also comprises: by the information receiving and transmitting function of return link and/or terminal, realize the coordination to described user's schedule information between the Microcell in the described cell cluster.
In this technical scheme, particularly, return link between the Microcell in the cell cluster can adopt interfaces such as X2, S1, and can detect the return link time delay, when return link time delay during more than or equal to default time delay numerical value, selection utilizes the information receiving and transmitting function of terminal, realizes the forwarding to harmony messages; When return link time delay during, select to utilize return link directly to transmit harmony messages less than default time delay numerical value.
In technique scheme, preferably, described step 106 also comprises: with in the described cell cluster and the numerical value of the parameter preset between other the Microcell all less than one or more Microcells of the predetermined threshold value of appointment as a sub-district, and send described federated user schedule information by one or more described sub-districts, wherein, described parameter preset comprises coupling loss and/or return link time delay; Or send described federated user schedule information in that identical running time-frequency resource is common by all Microcells in the described cell cluster.
In this technical scheme, send the federated user schedule information jointly by all Microcells, can make the terminal of this information of reception obtain diversity gain.
Fig. 2 shows the block diagram of plot joint dispatching system according to an embodiment of the invention.
As shown in Figure 2, plot joint dispatching system 200 according to an embodiment of the invention, comprise: grouping management unit 202 is used for selecting at least two Microcells that are associated from a plurality of Microcells, and described at least two Microcells that are associated is formed the cell cluster that is used for combined dispatching; Information generating unit 204 be used for coordinating user's schedule information of each Microcell correspondence of described cell cluster, and combined coding is the federated user schedule information; Information transmitting unit 206 is used for described federated user schedule information is sent to the terminal of being served by described cell cluster.
In this technical scheme, promptly there is more strongly disturbing Microcell in " Microcell that is associated ", by these Microcells are formed cell cluster, and coordinates user schedule information between all Microcells in cell cluster, thereby when transmission comprises the control signaling of user's schedule information, can avoid receiving the interference between the Microcell, help improving the reliability of control signaling transmission course, satisfy error probability and be lower than 1% requirement.
In technique scheme, preferably, described grouping management unit 202 comprises: parameter measurement subelement 2022, each Microcell that is used for controlling described a plurality of Microcells measure respectively and other Microcell between parameter preset; Judgment processing subelement 2024, be used for when the numerical value of the parameter preset that measures is less than or equal to presetting first threshold, the Microcell of this parameter preset correspondence is added in the described cell cluster, and/or when the numerical value of the parameter preset between at least one Microcell and other the Microcell during all less than default second threshold value, with described at least one Microcell as a sub-district, and with described sub-district and and at least one described sub-district between the numerical value of the parameter preset Microcell that is less than or equal to described first threshold be added in the described cell cluster.
In this technical scheme, can be according to actual conditions, the numerical value of first threshold, second threshold value etc. is provided with, to be adapted to actual requirement.Two kinds of situations have been proposed: under first kind of situation, after parameter preset and first threshold are compared, directly determine whether herein as the Microcell in the current area bunch; Under second kind of situation, at first select to lift one's head the sub-district, then according to the disturbed condition between other Microcells and this sub-district, thereby determine whether as the Microcell in the current area bunch, wherein, the number of sub-district can be for one or more, when having a plurality of sub-districts simultaneously, help the robustness of current area bunch.Need to prove, particularly, can use above dual mode to carry out the generation of cell cluster separately, also can adopt above dual mode that Microcell is selected simultaneously, if adopt above dual mode simultaneously, then Microcell is in satisfied wherein arbitrary situation or when satisfying two kinds of situations simultaneously, can be added in the current area bunch.
In technique scheme, preferably, described parameter preset comprises: coupling loss and/or return link time delay.
In this technical scheme, only enumerated wherein both comparatively common parameters, but obviously relevant, can reflect that other parameters of the disturbed condition between Microcell also expect easily, should belong within protection scope of the present invention.
In technique scheme, preferably, described grouping management unit 202 comprises: subelement 2026 is handled in report, obtain the measurement report to the pilot signal strength of described a plurality of Microcells of terminal to report, when described pilot signal strength during, the Microcell of this pilot signal strength correspondence is added in the described cell cluster more than or equal to default signal strength threshold.
In this technical scheme, except above-mentioned first kind of situation, second kind of situation, the third situation has been proposed also, promptly by the detected pilot signal strength of terminal, thereby judge disturbed condition between the corresponding Microcell, and be divided in the corresponding district bunch.Certainly, the third situation can realize separately, also can realize jointly with first kind of situation, second kind of situation.If adopt above three kinds of modes simultaneously, then Microcell can be added in the current area bunch when satisfied wherein arbitrary situation or satisfied simultaneously three kinds of situations.
In technique scheme, preferably, by the information receiving and transmitting function of return link and/or terminal, realize coordination between the Microcell in the described cell cluster of described information generating unit 2024 controls to described user's schedule information.
In this technical scheme, particularly, return link between the Microcell in the cell cluster can adopt interfaces such as X2, S1, and can detect the return link time delay, when return link time delay during more than or equal to default time delay numerical value, selection utilizes the information receiving and transmitting function of terminal, realizes the forwarding to harmony messages; When return link time delay during, select to utilize return link directly to transmit harmony messages less than default time delay numerical value.
In technique scheme, preferably, one or more sub-districts in the described cell cluster of described information transmitting unit 2026 controls send described federated user schedule information, or all Microcells of controlling in the described cell cluster send described federated user schedule information jointly at identical running time-frequency resource; Wherein, with in the described cell cluster and the numerical value of the parameter preset between other the Microcell all less than one or more Microcells of the predetermined threshold value of appointment as described sub-district.
In this technical scheme, send the federated user schedule information jointly by all Microcells, can make the terminal of this information of reception obtain diversity gain.
Fig. 3 shows the particular flow sheet of a plurality of according to an embodiment of the invention Microcell combined dispatching user schedule informations.
As shown in Figure 3, the idiographic flow of a plurality of according to an embodiment of the invention Microcell combined dispatching user schedule informations comprises:
Step 302, adjacent Microcell is formed the combined dispatching zone.
Step 304 is coordinated the user's schedule information between the Microcell in the combined dispatching zone, and with the schedule information combined coding in the zone.
Step 306 sends the federated user schedule information.
Particularly, the composition mode for the combined dispatching zone comprises following several in the step 302:
First kind of mode: based on the coupling loss between the base station
1) determines that all need carry out the Microcell that combined dispatching zone (or be called " cell cluster ") is divided, divide such as all Microcells of selecting in the certain area coverage, or judge all Microcells that have the phase mutual interference by Preliminary detection;
2) coupling loss between each Microcell detection and other Microcells is such as Microcell A, B, C ... the coupling loss that measures is CL
AB, CL
AC, CL
BC
3) with the numerical value and the coupling loss thresholding CL of these coupling losses
TCompare, and select the numerical value of coupling loss to be less than or equal to thresholding CL
TMicrocell form cell cluster.
Wherein, can improve 3 after then improving to step 3)) comprising:
A) will all be less than or equal to default thresholding CL with the numerical value of the coupling loss of other Microcells
HThe sub-district as a sub-district;
B) calculate other all Microcells and the coupling loss between the sub-district, with measured value and coupling loss thresholding CL
TCompare, and select the numerical value of coupling loss to be less than or equal to thresholding CL
TMicrocell, cell cluster is formed in a sub-district and these selected Microcells.
The second way: based on the return link time delay between the base station
1) determines that all need carry out the Microcell that combined dispatching zone (or be called " cell cluster ") is divided, divide such as all Microcells of selecting in the certain area coverage, or judge all Microcells that have the phase mutual interference by Preliminary detection;
2) the return link time delay between each Microcell detection and other Microcells is such as Microcell A, B, C ... the return link time delay that measures is L
AB, L
AC, L
BC
3) with the numerical value and the return link time delay thresholding L of these return link time delays
TCompare, and select the numerical value of return link time delay to be less than or equal to thresholding L
TMicrocell form cell cluster.
Wherein, can improve 3 after then improving to step 3)) comprising:
A) will all be less than or equal to default thresholding L with the numerical value of the return link time delay of other Microcells
HThe sub-district as a sub-district;
B) calculate other all Microcells and the return link time delay between the sub-district, with measured value and return link time delay thresholding L
TCompare, and select the numerical value of return link time delay to be less than or equal to thresholding L
TMicrocell, cell cluster is formed in a sub-district and these selected Microcells.
The third mode: the disturbed condition between the base station that measures based on terminal
1) determines that all need carry out the Microcell that combined dispatching zone (or be called " cell cluster ") is divided, divide such as all Microcells of selecting in the certain area coverage, or judge all Microcells that have the phase mutual interference by Preliminary detection;
2) obtain the pilot signal strength about above-mentioned Microcell of terminal to report;
3) pilot signal strength and threshold T are compared, selection intensity is greater than the base station of threshold T, to form cell cluster.
Certainly, also can be in step 2) in, initiatively pilot signal strength and the threshold T of each Microcell of measuring are compared by terminal, and only intensity is reported serving BS greater than the base station of threshold T, then adjacent base station is according to the candidate base station composition of terminal to report bunch.
Need to prove, particularly, can use above-mentioned three kinds of modes to form cell cluster separately, also can therefrom choose multiple mode wantonly and form cell cluster jointly; Wherein, when being elected to majority kind mode, Microcell can be that any situation that satisfies wherein gets final product, or need satisfy all situations.In addition, when being elected to majority kind mode, the built-up sequence of a plurality of modes also is arbitrarily, such as when selecting first kind and second kind of situation, can at first use first kind of situation, promptly obtain a sub-district candidate bunch, use second kind of situation then, promptly the Microcell among this sub-district candidate bunch is further screened by the return link time delay by coupling loss; Or use earlier second kind of situation to obtain sub-district candidate bunch, by first kind of situation the sub-district candidate bunch is screened then.
In step 304, carry out the universal time coordinated of user's schedule information between a plurality of Microcells in the cell cluster, can adopt multiple mode, such as directly transmitting and/or utilizing terminal to transmit by return link.
Particularly, can detect by the return link time delay when adopting interfaces such as X2, S1 between the Microcell, less when the return link time delay, when being less than or equal to preset threshold value, then directly use return link; When the return link time delay is big, then use terminal to transmit.Certainly, specifically can use in the above multiple mode one or more.
In step 306, cell cluster need send to the federated user schedule information that obtains the terminal of service, can adopt following any-mode:
1) base station in the sub-district sends the federated user schedule information;
2) all base stations in the sub-district all send identical federated user schedule information at identical running time-frequency resource, and this moment, terminal can obtain diversity gain.
More than be described with reference to the accompanying drawings technical scheme of the present invention, consider under the intensive Microcell scene, the control signaling that interference between Microcell may cause comprising user's schedule information produces excessive error probability in transmission course, therefore, the present invention proposes a kind of plot joint dispatching method and a kind of plot joint dispatching system, can carry out the division of cell cluster to the Microcell of dense distribution, thereby between a plurality of Microcells in the same cells bunch, dispatch coordination, guarantee to comprise the transmission reliability of the control signaling of user's schedule information.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a plot joint dispatching method is characterized in that, comprising:
Step 102 is selected at least two Microcells that are associated from a plurality of Microcells, and described at least two Microcells that are associated are formed the cell cluster that is used for combined dispatching;
Step 104 coordinate user's schedule information of each the Microcell correspondence in the described cell cluster, and combined coding is the federated user schedule information;
Step 106 is sent to the terminal of being served by described cell cluster with described federated user schedule information.
2. plot joint dispatching method according to claim 1 is characterized in that, described step 102 comprises:
Each Microcell in described a plurality of Microcell measure respectively and other Microcell between parameter preset;
Wherein, when the numerical value of the parameter preset that measures is less than or equal to presetting first threshold, the Microcell of this parameter preset correspondence is added in the described cell cluster, and/or
When the numerical value of the parameter preset between at least one Microcell and other the Microcell during all less than default second threshold value, with described at least one Microcell as a sub-district, and with described sub-district and and at least one described sub-district between the numerical value of the parameter preset Microcell that is less than or equal to described first threshold be added in the described cell cluster.
3. plot joint dispatching method according to claim 2 is characterized in that, described parameter preset comprises:
Coupling loss and/or return link time delay.
4. according to each described plot joint dispatching method in the claim 1 to 3, it is characterized in that described step 102 comprises:
Obtain the measurement report to the pilot signal strength of described a plurality of Microcells of terminal to report;
Wherein, when described pilot signal strength during, the Microcell of this pilot signal strength correspondence is added in the described cell cluster more than or equal to default signal strength threshold.
5. according to each described plot joint dispatching method in the claim 1 to 3, it is characterized in that described step 104 also comprises:
By the information receiving and transmitting function of return link and/or terminal, realize coordination between the Microcell in the described cell cluster to described user's schedule information.
6. according to each described plot joint dispatching method in the claim 1 to 3, it is characterized in that described step 106 also comprises:
With in the described cell cluster and the numerical value of the parameter preset between other the Microcell all less than one or more Microcells of the predetermined threshold value of appointment as a sub-district, and send described federated user schedule information by one or more described sub-districts, wherein, described parameter preset comprises coupling loss and/or return link time delay;
Or send described federated user schedule information in that identical running time-frequency resource is common by all Microcells in the described cell cluster.
7. a plot joint dispatching system is characterized in that, comprising:
The grouping management unit is used for selecting at least two Microcells that are associated from a plurality of Microcells, and described at least two Microcells that are associated are formed the cell cluster that is used for combined dispatching;
Information generating unit be used for coordinating user's schedule information of each Microcell correspondence of described cell cluster, and combined coding is the federated user schedule information;
Information transmitting unit is used for described federated user schedule information is sent to the terminal of being served by described cell cluster.
8. plot joint dispatching according to claim 7 system is characterized in that described grouping management unit comprises:
Parameter measurement subelement, each Microcell that is used for controlling described a plurality of Microcells measure respectively and other Microcell between parameter preset;
The judgment processing subelement is used for when the numerical value of the parameter preset that measures is less than or equal to presetting first threshold, the Microcell of this parameter preset correspondence is added in the described cell cluster, and/or
When the numerical value of the parameter preset between at least one Microcell and other the Microcell during all less than default second threshold value, with described at least one Microcell as a sub-district, and with described sub-district and and at least one described sub-district between the numerical value of the parameter preset Microcell that is less than or equal to described first threshold be added in the described cell cluster.
9. plot joint dispatching according to claim 8 system is characterized in that described parameter preset comprises:
Coupling loss and/or return link time delay.
10. according to each described plot joint dispatching system in the claim 7 to 9, it is characterized in that described grouping management unit comprises:
Subelement is handled in report, obtain the measurement report to the pilot signal strength of described a plurality of Microcells of terminal to report, when described pilot signal strength during, the Microcell of this pilot signal strength correspondence is added in the described cell cluster more than or equal to default signal strength threshold.
11. according to each described plot joint dispatching system in the claim 7 to 9, it is characterized in that, described information generating unit is controlled the information receiving and transmitting function of passing through return link and/or terminal between the interior Microcell of described cell cluster, realizes the coordination to described user's schedule information.
12. according to each described plot joint dispatching system in the claim 7 to 9, it is characterized in that, one or more the sub-districts that described information transmitting unit is controlled in the described cell cluster send described federated user schedule information, or all Microcells of controlling in the described cell cluster send described federated user schedule information jointly at identical running time-frequency resource;
Wherein, with in the described cell cluster and the numerical value of the parameter preset between other the Microcell all less than one or more Microcells of the predetermined threshold value of appointment as described sub-district.
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