CN105792360A - Resource allocation method and device in super cell - Google Patents
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Abstract
The invention discloses a resource allocation method and device in a super cell. The resource allocation method in the super cell comprises the following steps: allocating identical or different time frequency resources to space division multiple access users; and obtaining orthogonal demodulation reference signals of physical uplink shared channels of the space division multiple access users, and mapping the orthogonal demodulation reference signals onto the allocated time frequency resources. By adopting the resource allocation method disclosed by the invention, the allocation flexibility of space division multiple access sources can be improved, and the network performance can be improved.
Description
Technical field
The present invention relates to communication technical field, particularly relate to method and the device of resource distribution under a kind of super cell.
Background technology
Long Term Evolution (LongTermEvolution, LTE) system is with OFDM (OrthogonalFrequencyDivisionMultiplexing, and multiple-input and multiple-output (Multiple-InputMultipleOutput OFDM), be called for short MIMO) etc. based on core technology, it is possible to for accessing data transmission rate, less propagation delay time and the more excellent service quality that user provides higher.
Super cell (Super-Cell) is a kind of community form in long evolving system, each super cell is by multiple cell portion (Cell-Portion, CP) composition, the resource of super cell is shared in each cell portion, including cell ID (CellID), time-domain resource, frequency domain resource etc..In a super cell, there is unique mark each cell portion.Multiple cell portion can Combined Treatment same access user signal, therefore the power, the interference of reduction adjacent area that receive signal can be strengthened, thus improving the Signal to Interference plus Noise Ratio (SignaltoInterferenceplusNoiseRatio accessing user, SINR), particularly improve the Signal to Interference plus Noise Ratio of edge customer, reach to promote the purpose of the demodulation performance that user controls channel and Traffic Channel.But, owing to each super cell needs to cover the scope of original multiple conventional cell, aggregate resource relatively reduces, and power system capacity declines.In order to improve the power system capacity of super cell, prior art proposes a kind of space division multiplexing and accesses (SpaceDivisionMultipleAccess, SDMA) method, SDMA selects homophony user according to predetermined criterion and carries out space division multiple access access from calling family, but require homophony user and must tie up identical running time-frequency resource from calling family, limiting the motility of scheduling of resource, scheduling of resource being required strict, system realizes complexity, affects network performance.
Foregoing is only used for assisting understanding technical scheme, does not represent and admits that foregoing is prior art.
Summary of the invention
Present invention is primarily targeted at method and device that resource distribution under a kind of super cell is provided, it is intended to solve resource under existing super cell and distribute the technical problem of ineffective activity.
For achieving the above object, the present invention provides a kind of method of resource distribution under super cell, and under described super cell, the method for resource distribution comprises the following steps:
Described space division multiple access is accessed user and distributes identical or different running time-frequency resource；
Obtain the orthogonal demodulated reference signal that described space division multiple access accesses the Physical Uplink Shared Channel of user, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
Preferably, the described step that described space division multiple access access user distributes identical or different running time-frequency resource includes:
Obtain described space division multiple access and access the translational speed of user；
Judge the height of described translational speed；
If it is low speed user that described space division multiple access accesses user, then described space division multiple access is accessed user and distribute identical or different running time-frequency resource；
If it is non-low speed user that described space division multiple access accesses user, then described space division multiple access is accessed user and distribute identical running time-frequency resource.
Preferably, if it is low speed user that described space division multiple access accesses user, the described space division multiple access of described acquisition accesses the orthogonal demodulated reference signal of the Physical Uplink Shared Channel of user, the step that described orthogonal demodulated reference signal maps on the running time-frequency resource distributed is included:
Obtain described demodulated reference signal, distribute different cyclic shifts for described demodulated reference signal, make described demodulated reference signal orthogonal, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
Preferably, if it is non-low speed user that described space division multiple access accesses user, the described space division multiple access of described acquisition accesses the orthogonal demodulated reference signal of the Physical Uplink Shared Channel of user, the step that described orthogonal demodulated reference signal maps on the running time-frequency resource distributed is included:
Obtain described demodulated reference signal, for the Orthogonal Frequency Division Multiplexing sequence that the distribution of described demodulated reference signal is orthogonal, and the differential mode value of the cyclic shift of two time slots is equal, make described demodulated reference signal orthogonal, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
Preferably, the described step that described space division multiple access access user distributes different running time-frequency resources includes:
Different running time-frequency resources is distributed to the space division multiple access access user of difference group.
Additionally, for achieving the above object, the present invention also provides for resource assigned unit under a kind of super cell, and under described super cell, resource assigned unit includes:
Distribution module, distributes identical or different running time-frequency resource for described space division multiple access is accessed user；
Mapping block, for obtaining the orthogonal demodulated reference signal that described space division multiple access accesses the Physical Uplink Shared Channel of user, maps to described orthogonal demodulated reference signal on the running time-frequency resource distributed.
Preferably, described distribution module includes:
Acquiring unit, accesses the translational speed of user for obtaining described space division multiple access；
Judging unit, for judging the height of described translational speed；
First allocation units, if accessing user for described space division multiple access is low speed user, then accesses user to described space division multiple access and distribute identical or different running time-frequency resource；
Second allocation units, if accessing user for described space division multiple access is non-low speed user, then accesses user to described space division multiple access and distribute identical running time-frequency resource.
Preferably, if it is low speed user that described space division multiple access accesses user, described mapping block is specifically for obtaining described demodulated reference signal, for the cyclic shift that the distribution of described demodulated reference signal is different, make described demodulated reference signal orthogonal, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
Preferably, if it is non-low speed user that described space division multiple access accesses user, described mapping block is specifically for obtaining described demodulated reference signal, for the Orthogonal Frequency Division Multiplexing sequence that the distribution of described demodulated reference signal is orthogonal, and the differential mode value of the cyclic shift of two time slots is equal, make described demodulated reference signal orthogonal, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
Preferably, described second allocation units be further used for the space division multiple access to difference group access user distribute different running time-frequency resources.
Under a kind of super cell of the present invention resource distribution method and device, user can be accessed for space division multiple access and distribute identical or different running time-frequency resource, prior art can be overcome to necessarily require space division multiple access to access, and user's running time-frequency resource is identical or alignment and the defect that causes scheduling of resource motility low, improve the motility of space division multiple access access-in resource distribution, improve network performance.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of method one embodiment of resource distribution under super cell of the present invention；
Fig. 2 is the refinement schematic flow sheet of step S101 in Fig. 1；
Fig. 3 is that in Fig. 1, under super cell, resource distributes the schematic diagram of an embodiment；
Fig. 4 is that in Fig. 1, under super cell, resource distributes the schematic diagram of another embodiment；
Fig. 5 is that in Fig. 1, under super cell, resource distributes the schematic diagram of another embodiment；
Fig. 6 is that in Fig. 1, under super cell, resource distributes the schematic diagram of another embodiment again；
Fig. 7 is the high-level schematic functional block diagram of resource assigned unit one embodiment under super cell of the present invention；
Fig. 8 is the refinement high-level schematic functional block diagram distributing module in Fig. 7.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Detailed description of the invention
Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
The present invention provides a kind of method of resource distribution under super cell, and with reference to Fig. 1, in one embodiment, under this super cell, the method for resource distribution includes:
Step S101, accesses user to described space division multiple access and distributes identical or different running time-frequency resource；
In the present embodiment, under not additional any condition, directly space division multiple access can be accessed user and distributes same or different running time-frequency resource, and be not limited to distribute identical running time-frequency resource.
And space division multiple access technique of the prior art is necessary for access user and distributes identical running time-frequency resource, limit the motility of scheduling of resource.The present embodiment does not limit the running time-frequency resource of the distribution that space division multiple access accesses user and have to be perfectly the same, and reduces the restriction to scheduling of resource, and scheduling of resource is more flexible.
Step S102, obtains the orthogonal demodulated reference signal that described space division multiple access accesses the Physical Uplink Shared Channel of user, is mapped on the running time-frequency resource distributed by described orthogonal demodulated reference signal.
In the present embodiment, obtaining the demodulated reference signal that space division multiple access accesses the Physical Uplink Shared Channel (Physicaluplinksharedchannel, PUSCH) of user, this demodulated reference signal meets orthogonality.
The present embodiment is by distributing, for the Orthogonal Frequency Division Multiplexing sequence relevant to demodulated reference signal, demodulated reference signal cyclic shift, the value meeting predetermined condition, so that demodulated reference signal meets orthogonality.
In the present embodiment, meet the demodulated reference signal of orthogonality, when it accesses, for space division multiple access, the identical or different running time-frequency resource that user distributes in mapping to the present embodiment, ensure that good demodulation performance in receiving end.
The defect that the present embodiment can overcome prior art to necessarily require space division multiple access access user's running time-frequency resource perfectly aligned and cause scheduling of resource motility low, improves the motility of space division multiple access access-in resource distribution, improves network performance.
In a preferred embodiment, as in figure 2 it is shown, on the basis of the embodiment of above-mentioned Fig. 1, above-mentioned steps S101 includes:
Step S1011, obtains described space division multiple access and accesses the translational speed of user；
Step S1012, it is judged that the height of described translational speed, if low speed, then enters step S1013, if non-low speed, then enters step S1014；
Step S1013, if it is low speed user that described space division multiple access accesses user, then accesses user to described space division multiple access and distributes identical or different running time-frequency resource；
Step S1014, if it is non-low speed user that described space division multiple access accesses user, then accesses user to described space division multiple access and distributes identical running time-frequency resource.
In the present embodiment, obtain space division multiple access and access the translational speed of user, the uplink receiving signal accessing user according to space division multiple access moves tachometric survey, and then judge the height of translational speed, including: the translational speed that space division multiple access accesses user compares with the translational speed thresholding preset, then it is judged as low speed user if less than translational speed thresholding, is otherwise judged to non-low speed user；
In the present embodiment, if it is low speed user that space division multiple access accesses user, then space division multiple access is accessed user and distribute identical running time-frequency resource or different running time-frequency resources；If it is non-low speed user that space division multiple access accesses user, then space division multiple access is accessed user and distribute identical running time-frequency resource.
The present embodiment accesses user preferably by translational speed for space division multiple access and distributes running time-frequency resource, obtain space division multiple access and access the Speed attribute of user, and determine whether low speed user, and it is that space division multiple access access user distributes identical running time-frequency resource or different running time-frequency resources according to the result judged.The present embodiment can improve the motility of space division multiple access access-in resource distribution, reduces the requirement to scheduling of resource, reduces system and realizes complexity；Identical running time-frequency resource or different running time-frequency resources can also be distributed according to the translational speed accessing user, improve the performance of whole network further.
In a preferred embodiment, on the basis of the embodiment of above-mentioned Fig. 2, if it is low speed user that space division multiple access accesses user, above-mentioned steps S102 includes: obtain described demodulated reference signal, for the cyclic shift that the distribution of described demodulated reference signal is different, make described demodulated reference signal orthogonal, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
In the present embodiment, demodulated reference signal definition is as follows:
Wherein, w(λ)M () is Orthogonal Frequency Division Multiplexing sequence,For demodulated reference signal sequence；
Wherein, m is time slot index value, m=0,1；N is subcarrier index value,For the length of demodulated reference signal sequence,λ is layer, λ ∈ 0,1 ..., υ-1}；
Wherein, the cyclic shift α of each time slotλ=2 π ncs,λ/ 12:
Wherein,For broadcasted values,Provide for uplink scheduling distribution, nPN(ns) pseudo-random sequence that used by specific cell provided.Determined by the parameter cyclicShift in such as table 1 below,Determined by the value CyclicShiftField in the cyclic shift territory in such as table 2 below:
Table 1
Table 2
When being not provided with as higher level parameters Activate-DMRS-withOCC or adopt interim C-RNTI at up associated DC I nearest during demodulated reference signal transmits, w(λ)M () is [wλ(0)wλ(1)]=[11], otherwise w(λ)M () is also determined by table 2.
In the present embodiment, distribute different cyclic shifts for demodulated reference signal and include: distribute different cyclicShift and CyclicShiftField for carrying out space division multiple access access user so that it is ncs,λDifference, makes demodulated reference signal orthogonal.Preferably, the n of access user is madecs,λIt is spacedly distributed between 0～11.
In an additional preferred embodiment, if it is non-low speed user that space division multiple access accesses user, above-mentioned steps S102 can also include: obtains described demodulated reference signal, for the Orthogonal Frequency Division Multiplexing sequence that the distribution of described demodulated reference signal is orthogonal, and the differential mode value of the cyclic shift of two time slots is equal, make demodulated reference signal orthogonal, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
In the present embodiment, OCC has arranged and has enabled, it is allowed to maximum 2 groups of unequal users of resource carry out space division multiple access access, distribute different cyclicShift and CyclicShiftField for these two groups of users so that it is w(λ)M () is orthogonal, namely respectively [11] and [1-1], ncs,λDifference mould 12 on two time slots is equal, the n accessing user in groupcs,λUnequal, make demodulated reference signal orthogonal.
Such as, as in figure 2 it is shown, 2 users carry out space division multiple access access, each user's single bit stream monolayer, the n of 2 users of acquiescencePN(ns) equal, each user accounts for 5 Resource Block (ResourceBlock, RB).
Space division multiple access is accessed user distribute identical running time-frequency resource and include: the cyclicShift of two users of distribution is 0, CyclicShiftField respectively 000 and 001, the first row in corresponding table 2 and the value of the second row λ=0, be left out nPN(ns), then the n of two userscs,0Respectively 0 and 6.
Distribute identical or different running time-frequency resource to space division multiple access access user to include: distributing user 1cyclicShift is 4, CyclicShiftField is 000；User 2cyclicShift is 0, CyclicShiftField is 001；It is left out nPN(ns), then the n of two userscs,0It is all 0, w(0)(m) respectively [11] and [1-1].
Preferably, it is also possible to distribute different running time-frequency resources to the space division multiple access access user of difference group:
1, in one embodiment, as shown in Figure 4, the space division multiple access of difference group is accessed user and distributes different running time-frequency resources:
2 users carry out space division multiple access access, each user's single bit stream monolayer, the n of 2 users of acquiescencePN(ns) equal, user 1 accounts for 5 RB, and user 2 accounts for 8 RB.
Owing to 2 user's frequency domain resource do not line up, therefore demodulated reference signal orthogonality is very poor, and receiving end demodulation performance cannot ensure, does not recommend the running time-frequency resource that distribution is identical.In this case recommending the identical running time-frequency resource of distribution, it be 0, CyclicShiftField is 001 that distributing user 1 accounts for 5 RB, cyclicShift；It is 0, CyclicShiftField is 000 that user 2 accounts for 8 RB, cyclicShift；It is left out nPN(ns), then the n of two userscs,0Respectively 6 and 0, w(0)(m) respectively [1-1] and [11].
2, in another embodiment, as it is shown in figure 5, distribute different running time-frequency resources to the space division multiple access access user of difference group:
2 users carry out space division multiple access access, each user 2 code stream 2 layers, the n of 2 users of acquiescencePN(ns) equal, user 1 accounts for 8 RB, and user 2 accounts for 5 RB.
Owing to 2 user's frequency domain resource do not line up, therefore demodulated reference signal orthogonality is very poor, and receiving end demodulation performance cannot ensure, does not recommend the running time-frequency resource that distribution is identical.In this case recommending the identical running time-frequency resource of distribution, it be 2, CyclicShiftField is 000 that distributing user 1 accounts for 8 RB, cyclicShift；It is 0, CyclicShiftField is 010 that user 2 accounts for 5 RB, cyclicShift；It is left out nPN(ns), then the n of two userscs,0It is all 3, ncs,1It is all 9, the w of user 1(0)(m) and w(1)M () is all [11], the w of user 2(0)(m) and w(1)M () is all [1-1].
3, in another embodiment, as shown in Figure 6, the space division multiple access of difference group is accessed user and distributes different running time-frequency resources:
3 users carry out space division multiple access access, each user's single bit stream monolayer, 2 users in first group, 1 user in second group.The n of 3 users of acquiescencePN(ns) equal, user 1 and user 2 account for 5 RB, and user 3 accounts for 8 RB.
Owing to 2 user's frequency domain resource do not line up, therefore demodulated reference signal orthogonality is very poor, and receiving end demodulation performance cannot ensure, does not recommend the running time-frequency resource that distribution is identical.In this case recommending the identical running time-frequency resource of distribution, it 0 and 4, CyclicShiftField is respectively all 000 that distributing user 1 and user 2 account for 5 RB, cyclicShift；It is 0, CyclicShiftField is 001 that user 3 accounts for 8 RB, cyclicShift；It is left out nPN(ns), then the n of user 1 and user 2cs,0Respectively 0 and 6, w(0)M () is all [11], the n of user 3cs,0It is 6, w(0)M () is [1-1].
Space division multiple access is accessed user and distributes identical running time-frequency resource or different running time-frequency resources by the present embodiment, the running time-frequency resource not limiting space division multiple access access user have to be perfectly the same, reduce the restriction to scheduling, add the motility of scheduling, be conducive to system to realize；The Speed attribute of user can also be accessed simultaneously according to space division multiple access, select different resource allocation methods, network performance can be promoted further, reduce the complexity that system realizes；It is simultaneously introduced packet, has improved the number allowing space division multiple access to access user, improve power system capacity.
The present invention also provides for resource assigned unit under a kind of super cell, as it is shown in fig. 7, in one embodiment, under described super cell, resource assigned unit includes:
Distribution module 101, distributes identical or different running time-frequency resource for described space division multiple access is accessed user；
In the present embodiment, under not additional any condition, directly space division multiple access can be accessed user and distributes same or different running time-frequency resource, and be not limited to distribute identical running time-frequency resource.
And space division multiple access technique of the prior art is necessary for access user and distributes identical running time-frequency resource, limit the motility of scheduling of resource.The present embodiment does not limit the running time-frequency resource of the distribution that space division multiple access accesses user and have to be perfectly the same, and reduces the restriction to scheduling of resource, and scheduling of resource is more flexible.
Mapping block 102, for obtaining the orthogonal demodulated reference signal that described space division multiple access accesses the Physical Uplink Shared Channel of user, maps to described orthogonal demodulated reference signal on the running time-frequency resource distributed.
In the present embodiment, obtaining the demodulated reference signal that space division multiple access accesses the Physical Uplink Shared Channel (Physicaluplinksharedchannel, PUSCH) of user, this demodulated reference signal meets orthogonality.
The present embodiment is by distributing, for the Orthogonal Frequency Division Multiplexing sequence relevant to demodulated reference signal, demodulated reference signal cyclic shift, the value meeting predetermined condition, so that demodulated reference signal meets orthogonality.
In the present embodiment, meet the demodulated reference signal of orthogonality, when it accesses, for space division multiple access, the identical or different running time-frequency resource that user distributes in mapping to the present embodiment, ensure that good demodulation performance in receiving end.
In a preferred embodiment, as shown in Figure 8, on the basis of the embodiment of above-mentioned Fig. 7, described distribution module 101 includes:
Acquiring unit 1011, accesses the translational speed of user for obtaining described space division multiple access；
Judging unit 1012, for judging the height of described translational speed；
First allocation units 1013, if accessing user for described space division multiple access is low speed user, then accesses user to described space division multiple access and distribute identical or different running time-frequency resource；
Second allocation units 1014, if accessing user for described space division multiple access is non-low speed user, then accesses user to described space division multiple access and distribute identical running time-frequency resource.
In the present embodiment, obtain space division multiple access and access the translational speed of user, the uplink receiving signal accessing user according to space division multiple access moves tachometric survey, and then judge the height of translational speed, including: the translational speed that space division multiple access accesses user compares with the translational speed thresholding preset, then it is judged as low speed user if less than translational speed thresholding, is otherwise judged to non-low speed user；
In the present embodiment, if it is low speed user that space division multiple access accesses user, then space division multiple access is accessed user and distribute identical running time-frequency resource or different running time-frequency resources；If it is non-low speed user that space division multiple access accesses user, then space division multiple access is accessed user and distribute identical running time-frequency resource.
The present embodiment accesses user preferably by translational speed for space division multiple access and distributes running time-frequency resource, obtain space division multiple access and access the Speed attribute of user, and determine whether low speed user, and it is that space division multiple access access user distributes identical running time-frequency resource or different running time-frequency resources according to the result judged.The present embodiment can improve the motility of space division multiple access access-in resource distribution, reduces the requirement to scheduling of resource, reduces system and realizes complexity；Identical running time-frequency resource or different running time-frequency resources can also be distributed according to the translational speed accessing user, improve the performance of whole network further.
In a preferred embodiment, if it is low speed user that described space division multiple access accesses user, described mapping block 102 is specifically for obtaining described demodulated reference signal, for the cyclic shift that the distribution of described demodulated reference signal is different, make described demodulated reference signal orthogonal, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
In the present embodiment, demodulated reference signal definition is as follows:
Wherein, w(λ)M () is Orthogonal Frequency Division Multiplexing sequence,For demodulated reference signal sequence；
Wherein, m is time slot index value, m=0,1；N is subcarrier index value,For the length of demodulated reference signal sequence,λ is layer, λ ∈ 0,1 ..., υ-1}；
Wherein, the cyclic shift α of each time slotλ=2 π ncs,λ/ 12:
Wherein,For broadcasted values,Provide for uplink scheduling distribution, nPN(ns) pseudo-random sequence that used by specific cell provided.Determined by the parameter cyclicShift in above-mentioned table 1,Determined by the value CyclicShiftField in the cyclic shift territory in above-mentioned table 2, repeat no more herein.
When being not provided with as higher level parameters Activate-DMRS-withOCC or adopt interim C-RNTI at up associated DC I nearest during demodulated reference signal transmits, w(λ)M () is [wλ(0)wλ(1)]=[11], otherwise w(λ)M () is also determined by table 2.
In the present embodiment, distribute different cyclic shifts for demodulated reference signal and include: distribute different cyclicShift and CyclicShiftField for carrying out space division multiple access access user so that it is ncs,λDifference, makes demodulated reference signal orthogonal.Preferably, the n of access user is madecs,λIt is spacedly distributed between 0～11.
In an additional preferred embodiment, if it is non-low speed user that space division multiple access accesses user, above-mentioned steps S102 can also include: obtains described demodulated reference signal, for the Orthogonal Frequency Division Multiplexing sequence that the distribution of described demodulated reference signal is orthogonal, and the differential mode value of the cyclic shift of two time slots is equal, make demodulated reference signal orthogonal, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
In the present embodiment, OCC has arranged and has enabled, it is allowed to maximum 2 groups of unequal users of resource carry out space division multiple access access, distribute different cyclicShift and CyclicShiftField for these two groups of users so that it is w(λ)M () is orthogonal, namely respectively [11] and [1-1], ncs,λDifference mould 12 on two time slots is equal, the n accessing user in groupcs,λUnequal, make demodulated reference signal orthogonal.
Such as, as in figure 2 it is shown, 2 users carry out space division multiple access access, each user's single bit stream monolayer, the n of 2 users of acquiescencePN(ns) equal, each user accounts for 5 Resource Block (ResourceBlock, RB).
Space division multiple access is accessed user distribute identical running time-frequency resource and include: the cyclicShift of two users of distribution is 0, CyclicShiftField respectively 000 and 001, the first row in corresponding table 2 and the value of the second row λ=0, be left out nPN(ns), then the n of two userscs,0Respectively 0 and 6.
Distribute identical or different running time-frequency resource to space division multiple access access user to include: distributing user 1cyclicShift is 4, CyclicShiftField is 000；User 2cyclicShift is 0, CyclicShiftField is 001；It is left out nPN(ns), then the n of two userscs,0It is all 0, w(0)(m) respectively [11] and [1-1].
Preferably, it is also possible to distribute different running time-frequency resources to the space division multiple access access user of difference group:
1, in one embodiment, as shown in Figure 4, the space division multiple access of difference group is accessed user and distributes different running time-frequency resources:
2 users carry out space division multiple access access, each user's single bit stream monolayer, the n of 2 users of acquiescencePN(ns) equal, user 1 accounts for 5 RB, and user 2 accounts for 8 RB.
Owing to 2 user's frequency domain resource do not line up, therefore demodulated reference signal orthogonality is very poor, and receiving end demodulation performance cannot ensure, does not recommend the running time-frequency resource that distribution is identical.In this case recommending the identical running time-frequency resource of distribution, it be 0, CyclicShiftField is 001 that distributing user 1 accounts for 5 RB, cyclicShift；It is 0, CyclicShiftField is 000 that user 2 accounts for 8 RB, cyclicShift；It is left out nPN(ns), then the n of two userscs,0Respectively 6 and 0, w(0)(m) respectively [1-1] and [11].
2, in another embodiment, as it is shown in figure 5, distribute different running time-frequency resources to the space division multiple access access user of difference group:
2 users carry out space division multiple access access, each user 2 code stream 2 layers, the n of 2 users of acquiescencePN(ns) equal, user 1 accounts for 8 RB, and user 2 accounts for 5 RB.
Owing to 2 user's frequency domain resource do not line up, therefore demodulated reference signal orthogonality is very poor, and receiving end demodulation performance cannot ensure, does not recommend the running time-frequency resource that distribution is identical.In this case recommending the identical running time-frequency resource of distribution, it be 2, CyclicShiftField is 000 that distributing user 1 accounts for 8 RB, cyclicShift；It is 0, CyclicShiftField is 010 that user 2 accounts for 5 RB, cyclicShift；It is left out nPN(ns), then the n of two userscs,0It is all 3, ncs,1It is all 9, the w of user 1(0)(m) and w(1)M () is all [11], the w of user 2(0)(m) and w(1)M () is all [1-1].
3, in another embodiment, as shown in Figure 6, the space division multiple access of difference group is accessed user and distributes different running time-frequency resources:
3 users carry out space division multiple access access, each user's single bit stream monolayer, 2 users in first group, 1 user in second group.The n of 3 users of acquiescencePN(ns) equal, user 1 and user 2 account for 5 RB, and user 3 accounts for 8 RB.
Owing to 2 user's frequency domain resource do not line up, therefore demodulated reference signal orthogonality is very poor, and receiving end demodulation performance cannot ensure, does not recommend the running time-frequency resource that distribution is identical.In this case recommending the identical running time-frequency resource of distribution, it 0 and 4, CyclicShiftField is respectively all 000 that distributing user 1 and user 2 account for 5 RB, cyclicShift；It is 0, CyclicShiftField is 001 that user 3 accounts for 8 RB, cyclicShift；It is left out nPN(ns), then the n of user 1 and user 2cs,0Respectively 0 and 6, w(0)M () is all [11], the n of user 3cs,0It is 6, w(0)M () is [1-1].
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention and accompanying drawing content to make or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, all in like manner include in the scope of patent protection of the present invention.
Claims (10)
1. the method for resource distribution under a super cell, it is characterised in that under described super cell, the method for resource distribution comprises the following steps:
Described space division multiple access is accessed user and distributes identical or different running time-frequency resource；
Obtain the orthogonal demodulated reference signal that described space division multiple access accesses the Physical Uplink Shared Channel of user, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
2. the method for resource distribution under super cell as claimed in claim 1, it is characterised in that the described step that described space division multiple access access user distributes identical or different running time-frequency resource includes:
Obtain described space division multiple access and access the translational speed of user；
Judge the height of described translational speed；
If it is low speed user that described space division multiple access accesses user, then described space division multiple access is accessed user and distribute identical or different running time-frequency resource；
If it is non-low speed user that described space division multiple access accesses user, then described space division multiple access is accessed user and distribute identical running time-frequency resource.
3. the method for resource distribution under super cell as claimed in claim 2, if it is low speed user that described space division multiple access accesses user, it is characterized in that, the described space division multiple access of described acquisition accesses the orthogonal demodulated reference signal of the Physical Uplink Shared Channel of user, the step that described orthogonal demodulated reference signal maps on the running time-frequency resource distributed is included:
Obtain described demodulated reference signal, distribute different cyclic shifts for described demodulated reference signal, make described demodulated reference signal orthogonal, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
4. the method for resource distribution under super cell as claimed in claim 2, if it is non-low speed user that described space division multiple access accesses user, it is characterized in that, the described space division multiple access of described acquisition accesses the orthogonal demodulated reference signal of the Physical Uplink Shared Channel of user, the step that described orthogonal demodulated reference signal maps on the running time-frequency resource distributed is included:
Obtain described demodulated reference signal, for the Orthogonal Frequency Division Multiplexing sequence that the distribution of described demodulated reference signal is orthogonal, and the differential mode value of the cyclic shift of two time slots is equal, make described demodulated reference signal orthogonal, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
5. the method for resource distribution under super cell as claimed in claim 2, it is characterised in that the described step that described space division multiple access access user distributes different running time-frequency resources includes:
Different running time-frequency resources is distributed to the space division multiple access access user of difference group.
6. resource assigned unit under a super cell, it is characterised in that under described super cell, resource assigned unit includes:
Distribution module, distributes identical or different running time-frequency resource for described space division multiple access is accessed user；
Mapping block, for obtaining the orthogonal demodulated reference signal that described space division multiple access accesses the Physical Uplink Shared Channel of user, maps to described orthogonal demodulated reference signal on the running time-frequency resource distributed.
7. resource assigned unit under super cell as claimed in claim 6, it is characterised in that described distribution module includes:
Acquiring unit, accesses the translational speed of user for obtaining described space division multiple access；
Judging unit, for judging the height of described translational speed；
First allocation units, if accessing user for described space division multiple access is low speed user, then accesses user to described space division multiple access and distribute identical or different running time-frequency resource；
Second allocation units, if accessing user for described space division multiple access is non-low speed user, then accesses user to described space division multiple access and distribute identical running time-frequency resource.
8. resource assigned unit under super cell as claimed in claim 7, if it is low speed user that described space division multiple access accesses user, it is characterized in that, described mapping block is specifically for obtaining described demodulated reference signal, for the cyclic shift that the distribution of described demodulated reference signal is different, make described demodulated reference signal orthogonal, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
9. resource assigned unit under super cell as claimed in claim 7, if it is non-low speed user that described space division multiple access accesses user, it is characterized in that, described mapping block is specifically for obtaining described demodulated reference signal, for the Orthogonal Frequency Division Multiplexing sequence that the distribution of described demodulated reference signal is orthogonal, and the differential mode value of the cyclic shift of two time slots is equal, make described demodulated reference signal orthogonal, described orthogonal demodulated reference signal is mapped on the running time-frequency resource distributed.
10. resource assigned unit under super cell as claimed in claim 7, it is characterised in that described second allocation units are further used for the access user of the space division multiple access to difference group and distribute different running time-frequency resources.
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