CN102612153B - Method and equipment for carrying out CCE (Control Channel Element) resource allocation in communication system - Google Patents

Abstract

The invention provides a method and equipment for carrying out CCE (Control Channel Element) resource allocation in a communication system, wherein the equipment determines a preset quantity of user equipment to be allocated and in need of CCE resource allocation firstly on the basis of the priority of each user equipment; next, the equipment marks respective available CCE resources of each user equipment to be allocated on the basis of respective C-RNTI (Cell-Radio Network Temporary Identity) and polymerization grade of the user equipment to be allocated; then the equipment calculates the influence degree of available CCE resources of each user equipment to be allocated on the allocation of available CCE resources of other user equipment to be allocated on the basis of the respective available CCE resource, polymerization grade priority of all the user equipment to be allocated; and finally, the equipment allocates the CCE resources for all the user equipment to be allocated one by one on the basis of the influence degree and the priority. The method and the equipment disclosed by the invention have the advantage that the utilization ratio of the CCE resources and the scheduling ratio of user equipment can be increased.

Description

Carry out the method and apparatus of CCE Resourse Distribute in a communications system

this application claims the domestic priority that application number is the Chinese patent application of 201110024464.2 power.

Technical field

The present invention relates to the communications field, particularly relate to a kind of method and apparatus carrying out CCE Resourse Distribute in a communications system.

Background technology

The control channel unit (CCE) of Physical Downlink Control Channel (PDCCH) is a kind of resource for uplink and downlink, when a subscriber equipment (UE) is by descending or uplink scheduling, system is necessary for its and distributes CCE resource, and in the data of this CCE transmitted over resources PDCCH.Once this CCE resource is taken by certain UE, other UE just can not re-use it.

At present, most systems uses the distribution of static uplink/downlink CCE resource, and uses First Come First Served (FCFS) algorithm to solve CCE collision problem.The most immediate solution of PDCCH dynamic allocation algorithm calculates the specific search volume of UE, first distributes CCE to the specific search volume of UE with the strategy of First Come First Served, otherwise, in case of conflict, public search space is distributed.

In specific words, for FCFS algorithm, its predetermined polymerization grade according to subscriber equipment (determining based on TLA2.1 algorithm) calculates the specific search volume of this UE.If still have some positions to use in the specific search volume of this UE, just take a kind of simple solution: namely, select by the highest CCE index.If do not have available position in the specific search volume of UE, identical flow process is also applicable to public search space.Finally, if public search space is also fully allocated, this UE would not be assigned to any CCE resource, goes to the next subscriber equipment of process subsequently.

Fig. 1 gives the diagram according to FCFS algorithm assigns PDCCH CCE result.Shown system bandwidth is 20MHz, CFI=1, and the CCE total number resource in subframe 0 is 21, and totally 6 UE need scheduling.Use FCFS algorithm, UE3 and UE6 gets clogged, so the scheduling rate that the utilance of CCE resource is 33.3%, UE is 66.7%.The utilance of CCE resource is unsatisfactory.

Summary of the invention

The object of this invention is to provide a kind of method and apparatus carrying out CCE Resourse Distribute in a communications system.

According to an aspect of the present invention, provide a kind of method of carrying out CCE Resourse Distribute in a communications system, wherein, described method comprises step:

A, based on the priority of each subscriber equipment, determines that predetermined quantity needs to distribute the subscriber equipment multiple to be allocated of CCE resource;

B marks each subscriber equipment to be allocated CCE resource available separately based on the respective C-RNTI of described multiple subscriber equipment to be allocated and polymerization grade;

C based on available separately CCE resource, polymerization grade and the priority of each subscriber equipment to be allocated, calculate each subscriber equipment to be allocated can CCE resource to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute;

D is described multiple user equipment allocation CCE resource to be allocated based on described influence degree and priority one by one.

According to another aspect of the present invention, additionally provide a kind of equipment carrying out CCE Resourse Distribute in a communications system, wherein, described equipment comprises:

Determining device, for the priority based on each subscriber equipment, determines that predetermined quantity needs to distribute the subscriber equipment multiple to be allocated of CCE resource;

Labelling apparatus, for marking each subscriber equipment to be allocated CCE resource available separately based on the respective C-RNTI of described multiple subscriber equipment to be allocated and polymerization grade;

Calculation element, for based on available separately CCE resource, polymerization grade and the priority of each subscriber equipment to be allocated, calculate each subscriber equipment to be allocated can CCE resource to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute;

Distributor, for being described multiple user equipment allocation CCE resource to be allocated one by one based on described influence degree and priority.

Compared with prior art, the present invention has the following advantages: can improve the utilance of CCE resource and the scheduling rate of subscriber equipment.

Accompanying drawing explanation

By reading the detailed description done non-limiting example done with reference to the following drawings, other features, objects and advantages of the present invention will become more obvious:

Fig. 1 is existing CCE Resourse Distribute schematic diagram;

Fig. 2 is the method flow diagram carrying out CCE Resourse Distribute in a communications system of one aspect of the invention;

Fig. 3 is the method flow diagram carrying out CCE Resourse Distribute in a communications system of another aspect of the present invention;

Fig. 4 is the CCE resource matrix schematic diagram carrying out being formed in the method for CCE Resourse Distribute in a communications system of the present invention;

Fig. 5 is the median schematic diagram carrying out calculating in the method for CCE Resourse Distribute in a communications system of the present invention;

Fig. 6 is the influence degree schematic diagram carrying out calculating in the method for CCE Resourse Distribute in a communications system of the present invention;

Fig. 7 is the influence degree mean value schematic diagram carrying out calculating in the method for CCE Resourse Distribute in a communications system of the present invention;

Fig. 8 is the CCE Resourse Distribute schematic diagram carrying out the method for CCE Resourse Distribute in a communications system of the present invention;

Fig. 9 is the equipment schematic diagram carrying out CCE Resourse Distribute in a communications system of one aspect of the invention;

Figure 10 is the equipment schematic diagram carrying out CCE Resourse Distribute in a communications system of another aspect of the present invention;

In accompanying drawing, same or analogous Reference numeral represents same or analogous parts.

Embodiment

Below in conjunction with accompanying drawing, the present invention is described in further detail.

Fig. 2 shows the method flow diagram carrying out CCE Resourse Distribute in a communications system of one aspect of the invention.Wherein, described communication system comprises: k subscriber equipment, such as, and subscriber equipment 11, subscriber equipment 12 ... subscriber equipment 1k; And resource allocation apparatus.Described communication system includes but not limited to: LTE system etc.

Concrete, in step S01, described resource allocation apparatus, based on the priority of each subscriber equipment, determines that predetermined quantity needs to distribute the subscriber equipment multiple to be allocated of CCE resource.Such as, the priority of subscriber equipment 11 is 1; The priority of subscriber equipment 12 is 1.5; ... the priority of subscriber equipment 1k is 1.8, thus, resource allocation apparatus is based on the priority of subscriber equipment 11, subscriber equipment 12 ... subscriber equipment 1k, therefrom select predetermined quantity, such as, i, the highest subscriber equipment of priority is as subscriber equipment to be allocated, such as, be designated as respectively: UE1, UE2......UEi.

Then, in step S02, resource allocation apparatus marks each subscriber equipment to be allocated CCE resource available separately based on the respective user radio network identity (C-RNTI) of described multiple subscriber equipment to be allocated and polymerization grade.Such as, the Physical Downlink Control Channel (PDCCH) of described communication system has 21 for the CCE resource of distributing, represent with CCE0 to CCE20 respectively, thus, resource allocation apparatus based on the C-RNTI of user equipment (UE) 1 to be allocated and polymerization grade (i.e. AL), such as, be 2, mark user equipment (UE) 1 can CCE resource, such as, terminate to CCE13 by CCE2 is initial; Again such as, resource allocation apparatus, based on the C-RNTI of user equipment (UE) 2 to be allocated and polymerization grade, such as, is 4, mark user equipment (UE) 2 can CCE resource, such as, terminate to CCE9 by CCE2 is initial.

Then, in step S03, resource allocation apparatus based on available separately CCE resource, polymerization grade and the priority of each subscriber equipment to be allocated, calculate each subscriber equipment to be allocated can CCE resource to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute.Such as, resource allocation apparatus based on user equipment (UE) 1 can CCE resource, such as, CCE2 is initial to CCE13, polymerization grade, be such as 2 and priority, if calculate it to take CCE2 and CCE3, then to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute be 14, if its take CCE4 and CCE5 to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute be 13 ... if its take CCE12 and CCE13 to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute be 13 etc.

Then, in step S04, resource allocation apparatus is described multiple user equipment allocation CCE resource to be allocated based on described influence degree and priority one by one.Such as, in each user equipment (UE) 1 to be allocated, UE2......UEi, the priority of user equipment (UE) 1 is the highest, then resource allocation apparatus first based on the user equipment (UE) 1 calculated can CCE resource to the influence degree of other user equipment (UE)s 2......UEi, in the CCE resource that it is available, distribute influence degree minimum CCE resource for user equipment (UE) 1, such as, be: CCE10 and CCE11.Then, according to priority descending comes deputy subscriber equipment to be allocated, be such as: user equipment (UE) 2, then resource allocation apparatus first based on the user equipment (UE) 2 calculated can CCE resource (being such as CCE8 to the CCE15) influence degree to other user equipment (UE)s 1, UE3......UEi, for user equipment (UE) 2 distributes influence degree minimum CCE resource, be such as: CCE8 and CCE9 so come to be i user equipment allocation CCE resource to be allocated one by one based on priority.

Fig. 3 shows the method flow diagram carrying out CCE Resourse Distribute in a communications system of another aspect of the present invention.

Concrete, in step S01 ', described resource allocation apparatus, based on the priority of each subscriber equipment, determines that predetermined quantity needs to distribute the subscriber equipment multiple to be allocated of CCE resource.Such as, resource allocation apparatus is based on the priority of subscriber equipment 11, subscriber equipment 12 ... subscriber equipment 1k, therefrom select predetermined quantity, such as, 6, the highest subscriber equipment of priority, as subscriber equipment to be allocated, such as, is designated as: UE1, UE2, UE3, UE4, UE5, UE6 respectively.

Then, in step S02 ', CCE resource is arranged in horizontal direction by resource allocation apparatus, by each subscriber equipment foundation priority arrangement to be allocated at vertical direction, and mark each subscriber equipment to be allocated CCE resource available separately, to form CCE resource mark matrix based on the respective C-RNTI of described multiple subscriber equipment to be allocated and polymerization grade.Such as, the Physical Downlink Control Channel (PDCCH) of described communication system has 21 CCE resources, is labeled as CCE0, CCE1 ... CCE20 respectively; The polymerization grade AL of user equipment (UE) 1 to be allocated ₁be 2, resource allocation apparatus marks its available CCE resource based on the C-RNTI of user equipment (UE) 1 and polymerization grade, such as, be: CCE4 to CCE15; The polymerization grade AL of user equipment (UE) 2 to be allocated ₂be 2, resource allocation apparatus marks its available CCE resource based on the C-RNTI of user equipment (UE) 2 and polymerization grade, such as, be: CCE6 to CCE17; The polymerization grade AL of user equipment (UE) 3 to be allocated ₃be 4, resource allocation apparatus marks its available CCE resource based on the C-RNTI of user equipment (UE) 3 and polymerization grade, such as, be: CCE2 to CCE9; The polymerization grade AL of user equipment (UE) 4 to be allocated ₄be 2, resource allocation apparatus marks its available CCE resource based on the C-RNTI of user equipment (UE) 4 and polymerization grade, such as, be: CCE8 to CCE19; The polymerization grade AL of user equipment (UE) 5 to be allocated ₅be 1, resource allocation apparatus marks its available CCE resource based on the C-RNTI of user equipment (UE) 5 and polymerization grade, such as, be: CCE12 to CCE17; The polymerization grade AL of user equipment (UE) 6 to be allocated ₆be 4, resource allocation apparatus marks its available CCE resource based on the C-RNTI of user equipment (UE) 6 and polymerization grade, such as, be: CCE6 to CCE13 that thus, the CCE resource mark matrix of formation as shown in Figure 4.

Then, in step S031, resource allocation apparatus based on described CCE resource mark matrix according to following formulae discovery median BULB_aux _{i, j}:

BULB_aux _i，j＝w(AL _i)·AL _i，j·(row _max-i+1) (1)

Wherein, i is the line index in described CCE resource mark matrix,

J is the column index in described CCE resource mark matrix,

AL _{i, j}for the mark value that the i-th row j in described CCE resource mark matrix arranges,

W (AL _i) for being arranged in the first predefined weight factor of the subscriber equipment of the i-th row,

Row _maxfor maximum row index.

As a kind of optimal way, described first predefined weight factor w (AL _i) be inversely proportional to the polymerization grade AL of the subscriber equipment of the i-th row _i.Such as, for user equipment (UE) 1, its polymerization grade AL _i=2, first predefined weight factor w (AL ₁), be such as: 0.6, for user equipment (UE) 3, its polymerization grade AL _i=4, first predefined weight factor w (AL ₃), be such as: 0.4, for user equipment (UE) 5, its polymerization grade AL _i=1, first predefined weight factor w (AL ₅), be such as: 1; In addition, if there is the polymerization grade of subscriber equipment to be 8, its first predefined weight factor is such as 0.2.Thus, resource allocation apparatus based on described CCE resource mark matrix according to the median of the available CCE resource CCE4 of formula (1) calculating user equipment (UE) 1 is:

BUBL_aux _1，4＝w(AL _i)·AL _1，4·(6-1+1)＝0.6*2*6＝7.2。

Again such as, for user equipment (UE) 3, the median that resource allocation apparatus calculates its available CCE resource CCE2 based on described CCE resource mark matrix according to formula (1) is:

BUBL_aux _3，4=w(AL ₃)·AL _3，4·(6-3+1)=O.4·4·4＝6.4。

Equally, resource allocation apparatus can calculate user equipment (UE) l can by the median of the respective median of CCE resource CCE5 to CCEl5 and the available separately CCE resource of user equipment (UE) 2 to UE6, and each median as shown in Figure 5, illustrates no longer one by one at this.

Then, in step S032, resource allocation apparatus based on each median again according to each subscriber equipment to be allocated of following formulae discovery can CCE resource to other subscriber equipmenies to be allocated can the influence degree of CCE resource:

${\mathrm{BULB}}_{i,j}=\mathrm{BULB}\_{\mathrm{aux}}_{i,j}$

$+\max (\mathrm{BULB}\_{\mathrm{aux}}_{i+1,j}\mathrm{BULB}\_\mathrm{au}{x}_{i+2,j},..,\mathrm{BULB}\_{\mathrm{aux}}_{{\mathrm{row}}_{\max },j})$

$-w\_\mathrm{up}*\max (\mathrm{BULB}\_{\mathrm{aux}}_{1,j},\mathrm{BULB}\_{\mathrm{aux}}_{2,j},..,\mathrm{BULB}\_{\mathrm{aux}}_{i-1,j}),---\left(2\right)$

Wherein, w_up is the second predefined weight factor, such as, be O.1.

Such as, resource allocation apparatus can calculate the influence degree of CCE resource CCE4 to the available separately CCE resource of user equipment (UE) 2 to UE6 by the median of CCE resource CCE4 according to formula (2) based on user equipment (UE) l:

BULB _l，4＝ BULB_aux _1，4

+max(BULB_aux _2，4,BULB_aux _3，4，..，BULB_aux _6，4)

＝ 7.2+6.4

＝ 13.6

Based on above-mentioned same mode, resource allocation apparatus can calculate one by one user equipment (UE) 1 can with CCE resource CCE5 to CCE15 to the influence degree of the available separately CCE resource of user equipment (UE) 2 to UE6 and the available separately CCE resource of user equipment (UE) 2 to UE6 to the influence degree of the available CCE resource of other subscriber equipmenies, each influence degree as shown in Figure 6, illustrates no longer one by one at this.

Then, in step S033, resource allocation apparatus based on polymerization grade and influence degree calculate according to the following formula each subscriber equipment can the influence degree mean value of CCE resource group:

$\mathrm{BULB}\_{\mathrm{mean}}_{i,j}^l\left({\mathrm{AL}}_i\right)=\frac{\underset{j=\mathrm{start}({\mathrm{AL}}_i,l)}{\overset{\mathrm{end}({\mathrm{AL}}_i,l)}{\mathrm{\Σ}}}{\mathrm{BULE}}_{i,j}}{\mathrm{end}({\mathrm{AL}}_i,l)-\mathrm{start}({\mathrm{AL}}_i,l)+1},---\left(3\right)$

Wherein, start (AL _i, l) for be arranged in the i-th row subscriber equipment can l CCE resource group in the original position of CCE resource, end (AL _i, l) be arranged in the i-th row subscriber equipment can l CCE resource group in the end position of CCE resource.

Such as, resource allocation apparatus calculates the influence degree mean value of CCE resource group 1 (i.e. CCE2 to CCE5) based on the polymerization grade of user equipment (UE) 3 and influence degree according to formula (3):

$\mathrm{BUBl}\_{\mathrm{mean}}_{\mathrm{3,4}}^l\left({\mathrm{AL}}_3\right)=\frac{\underset{j=\mathrm{start}({\mathrm{AL}}_3,l)}{\overset{\mathrm{end}({\mathrm{AL}}_3,l)}{\mathrm{\Σ}}}{\mathrm{BUBL}}_{3,j}}{\mathrm{end}({\mathrm{AL}}_3,l)-\mathrm{start}({\mathrm{AL}}_3,l)+1}=\frac{\underset{j=2}{\overset{j=5}{\mathrm{\Σ}}}{\mathrm{BULB}}_{3,j}}{5-2+1}=6.05;$ Resource allocation apparatus is based on above-mentioned same method, the influence degree mean value of the respective CCE resource group of the influence degree mean value of the CCE resource group 2 (i.e. CCE6 to CCE9) of user equipment (UE) 3 and user equipment (UE) 1, UE2, UE4 to UE6 can be calculated, each influence degree mean value is concrete as shown in Figure 7, describes in detail no longer one by one at this.

Then, in step S04 ', resource allocation apparatus is described multiple user equipment allocation CCE resource to be allocated based on described influence degree mean value and priority one by one.Such as, resource allocation apparatus is followed successively by the CCE resource of user equipment (UE) 1, user equipment (UE) 2, user equipment (UE) 3, user equipment (UE) 4, user equipment (UE) 5, user equipment (UE) 6 distribution based on priority.Wherein, for user equipment (UE) 1, resource allocation apparatus selects available CCE resource from its influence degree mean value reckling, such as, be: CCE10-CCE11; For user equipment (UE) 2, resource allocation apparatus selects available CCE resource from its influence degree mean value reckling, such as, be: CCE12-CCE13; For user equipment (UE) 3, resource allocation apparatus selects available CCE resource from its influence degree mean value reckling, such as, be: CCE2-CCE5; For user equipment (UE) 4, resource allocation apparatus selects available CCE resource of joining from its influence degree mean value reckling, such as, be: CCE18-CCE19; For user equipment (UE) 5, resource allocation apparatus selects available CCE resource from its influence degree mean value reckling, such as, be: CCE16; For user equipment (UE) 6, resource allocation apparatus selects available CCE resource from its influence degree mean value reckling, such as, be: CCE6-CCE9; CCE Resourse Distribute as shown in Figure 8.Obviously, for 21 CCE resources for distribution of PDCCH, wherein 15 are assigned to user equipment (UE) 1 to UE6, and the apportionment ratio of the CCE resource of PDCCH is up to 71.4%, and 6 subscriber equipmenies to be allocated all obtain CCE resource, the CCE scheduling of resource rate of subscriber equipment is up to 100%.

Fig. 9 shows the equipment schematic diagram carrying out CCE Resourse Distribute in a communications system of one aspect of the invention.Wherein, resource allocation apparatus comprises: determining device 11, labelling apparatus 12, calculation element 13 and distributor 14.

Concrete, determining device 11, based on the priority of each subscriber equipment, determines that predetermined quantity needs to distribute the subscriber equipment multiple to be allocated of CCE resource.Such as, the priority of subscriber equipment 11 is 1; The priority of subscriber equipment 12 is 1.5; ... the priority of subscriber equipment 1k is 1.8, thus, determining device 11 is based on the priority of subscriber equipment 11, subscriber equipment 12 ... subscriber equipment 1k, therefrom select predetermined quantity, such as, i, the highest subscriber equipment of priority is as subscriber equipment to be allocated, such as, be designated as respectively: UE1, UE2......UEi.

Then, labelling apparatus 12 marks each subscriber equipment to be allocated CCE resource available separately based on the respective user radio network identity (C-RNTI) of described multiple subscriber equipment to be allocated and polymerization grade.Such as, the Physical Downlink Control Channel (PDCCH) of described communication system has 21 for the CCE resource of distributing, represent with CCE0 to CCE20 respectively, thus, labelling apparatus 12 based on the C-RNTI of user equipment (UE) 1 to be allocated and polymerization grade (i.e. AL), such as, be 2, mark user equipment (UE) 1 can CCE resource, such as, terminate to CCE13 by CCE2 is initial; Again such as, labelling apparatus 12, based on the C-RNTI of user equipment (UE) 2 to be allocated and polymerization grade, such as, is 4, mark user equipment (UE) 2 can CCE resource, such as, terminate to CCE9 by CCE2 is initial.

Then, calculation element 13 based on available separately CCE resource, polymerization grade and the priority of each subscriber equipment to be allocated, calculate each subscriber equipment to be allocated can CCE resource to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute.Such as, calculation element 13 based on user equipment (UE) 1 can CCE resource, such as, CCE2 is initial to CCE13, polymerization grade, be such as 2 and priority, if calculate it to take CCE2 and CCE3, then to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute be 14, if its take CCE4 and CCE5 to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute be 13 ... if its take CCE12 and CCE13 to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute be 13 etc.

Then, distributor 14 is described multiple user equipment allocation CCE resource to be allocated based on described influence degree and priority one by one.Such as, in each user equipment (UE) 1 to be allocated, UE2......UEi, the priority of user equipment (UE) 1 is the highest, then distributor 14 first based on the user equipment (UE) 1 calculated can CCE resource to the influence degree of other user equipment (UE)s 2......UEi, in the CCE resource that it is available, distribute influence degree minimum CCE resource for user equipment (UE) 1, such as, be: CCE10 and CCE11.Then, according to priority descending comes deputy subscriber equipment to be allocated, be such as: user equipment (UE) 2, then distributor 14 first based on the user equipment (UE) 2 calculated can CCE resource (being such as CCE8 to the CCE15) influence degree to other user equipment (UE)s 1, UE3......UEi, for user equipment (UE) 2 distributes influence degree minimum CCE resource, be such as: CCE8 and CCE9 so come to be i user equipment allocation CCE resource to be allocated one by one based on priority.

Figure 10 shows the equipment schematic diagram carrying out CCE Resourse Distribute in a communications system of another aspect of the present invention.Wherein, resource allocation apparatus comprises: determining device 11, labelling apparatus 12, calculation element 13 and distributor 14; Described calculation element comprises again: the first computing unit 131, second computing unit 132 and the 3rd computing unit 133.

Concrete, determining device 11, based on the priority of each subscriber equipment, determines that predetermined quantity needs to distribute the subscriber equipment multiple to be allocated of CCE resource.Such as, determining device 11 is based on the priority of subscriber equipment 11, subscriber equipment 12 ... subscriber equipment 1k, therefrom select predetermined quantity, such as, 6, the highest subscriber equipment of priority, as subscriber equipment to be allocated, such as, is designated as: UE1, UE2, UE3, UE4, UE5, UE6 respectively.

Then, CCE resource is arranged in horizontal direction by labelling apparatus 12, by each subscriber equipment foundation priority arrangement to be allocated at vertical direction, and mark each subscriber equipment to be allocated CCE resource available separately, to form CCE resource mark matrix based on the respective C-RNTI of described multiple subscriber equipment to be allocated and polymerization grade.Such as, the Physical Downlink Control Channel (PDCCH) of described communication system has 21 CCE resources, is designated as CCE0, CCE1 ... CCE20 respectively; The polymerization grade AL of user equipment (UE) 1 to be allocated ₁be 2, labelling apparatus 12 marks its available CCE resource based on the C-RNTI of user equipment (UE) 1 and polymerization grade, such as, be: CCE4 to CCE15; The polymerization grade AL of user equipment (UE) 2 to be allocated ₂be 2, labelling apparatus 12 marks its available CCE resource based on the C-RNTI of user equipment (UE) 2 and polymerization grade, such as, be: CCE6 to CCE17; The polymerization grade AL of user equipment (UE) 3 to be allocated ₃be 4, labelling apparatus 12 marks its available CCE resource based on the C-RNTI of user equipment (UE) 3 and polymerization grade, such as, be: CCE2 to CCE9; The polymerization grade AL of user equipment (UE) 4 to be allocated ₄be 2, labelling apparatus 12 marks its available CCE resource based on the C-RNTI of user equipment (UE) 4 and polymerization grade, such as, be: CCE8 to CCE19; The polymerization grade AL of user equipment (UE) 5 to be allocated ₅be 1, labelling apparatus 12 marks its available CCE resource based on the C-RNTI of user equipment (UE) 5 and polymerization grade, such as, be: CCE12 to CCE17; The polymerization grade AL of user equipment (UE) 6 to be allocated ₆be 4, labelling apparatus 12 marks its available CCE resource based on the C-RNTI of user equipment (UE) 6 and polymerization grade, such as, be: CCE6 to CCE13 that thus, the CCE resource mark matrix of formation as shown in Figure 4.

Then, the first computing unit 131 based on described CCE resource mark matrix according to following formulae discovery median BULB_aux _{i, j}:

BULB_aux _i，j＝w(AL _i)·AL _i，j·(row _max-i+1) (1)

Wherein, i is the line index in described CCE resource mark matrix,

J is the column index in described CCE resource mark matrix,

AL _{i, j}for the mark value that the i-th row j in described CCE resource mark matrix arranges,

W (AL _i) for being arranged in the first predefined weight factor of the subscriber equipment of the i-th row,

Row _maxfor maximum row index.

As a kind of optimal way, described first predefined weight factor w (AL _i) be inversely proportional to the polymerization grade AL of the subscriber equipment of the i-th row _i.Such as, for user equipment (UE) 1, its polymerization grade AL _i=2, first predefined weight factor w (AL ₁), be such as: 0.6, for user equipment (UE) 3, its polymerization grade AL _i=4, first predefined weight factor w (AL ₃), be such as: 0.4, for user equipment (UE) 5, its polymerization grade AL _i=1, first predefined weight factor w (AL ₅), be such as: 1; In addition, if the polymerization grade of a subscriber equipment is 8, its first predefined weight factor is such as 0.2.Thus, the first computing unit 131 based on described CCE resource mark matrix according to the median of the available CCE resource CCE4 of formula (1) calculating user equipment (UE) 1 is:

BULB_aux _1，4＝w(AL ₁)·AL _1，4·(6-1+1)

＝0.6*2*6；

＝7.2

Equally, the first computing unit 131 can calculate user equipment (UE) 1 can by the median of the respective median of CCE resource CCE5 to CCE15 and the available separately CCE resource of user equipment (UE) 2 to UE6, and each median as shown in Figure 5, illustrates no longer one by one at this.

Then, the second computing unit 132 based on each median again according to each subscriber equipment to be allocated of following formulae discovery can CCE resource to other subscriber equipmenies to be allocated can the influence degree of CCE resource:

${\mathrm{BULB}}_{i,j}=\mathrm{BULB}\_{\mathrm{aux}}_{i,j}$

$+\max (\mathrm{BULB}\_{\mathrm{aux}}_{i+1,j}\mathrm{BULB}\_\mathrm{au}{x}_{i+2,j},..,\mathrm{BULB}\_{\mathrm{aux}}_{{\mathrm{row}}_{\max },j})$

$-w\_\mathrm{up}*\max (\mathrm{BULB}\_{\mathrm{aux}}_{1,j},\mathrm{BULB}\_{\mathrm{aux}}_{2,j},..,\mathrm{BULB}\_{\mathrm{aux}}_{i-1,j}),---\left(2\right)$

Wherein, w_up is the second predefined weight factor, such as, be 0.1.

Such as the second computing unit 132 can calculate the influence degree of CCE resource CCE4 to the available separately CCE resource of user equipment (UE) 2 to UE6 by the median of CCE resource CCE4 according to formula (2) based on user equipment (UE) 1:

BULB _1，4＝BULB_aux _1，4

+max(BULB_aux _2，4BULB_aux _3，4，..BULB_aux _6，4)，

＝7.2+6.4

＝13.6

Based on above-mentioned same mode, the available CCE resource CCE5 to CCE15 that second computing unit 132 can calculate user equipment (UE) 1 one by one to the influence degree of the available separately CCE resource of user equipment (UE) 2 to UE6 and the available separately CCE resource of user equipment (UE) 2 to UE6 to the influence degree of the available CCE resource of other subscriber equipmenies, each influence degree as shown in Figure 6, illustrates no longer one by one at this.

Then, the 3rd computing unit 133 based on polymerization grade and influence degree calculate according to the following formula each subscriber equipment can the influence degree mean value of CCE resource group:

$\mathrm{BULB}\_{\mathrm{mean}}_{i,j}^l\left({\mathrm{AL}}_i\right)=\frac{\underset{j=\mathrm{start}({\mathrm{AL}}_i,l)}{\overset{\mathrm{end}({\mathrm{AL}}_i,l)}{\mathrm{\Σ}}}{\mathrm{BULE}}_{i,j}}{\mathrm{end}({\mathrm{AL}}_i,l)-\mathrm{start}({\mathrm{AL}}_i,l)+1},---\left(3\right)$

Wherein, start (AL _i, l) for be arranged in the i-th row subscriber equipment can l CCE resource group in the original position of CCE resource, end (AL _i, l) be arranged in the i-th row subscriber equipment can l CCE resource group in the end position of CCE resource.

Such as, the 3rd computing unit 133 calculates the influence degree mean value of CCE resource group 1 (i.e. CCE2 to CCE5) based on the polymerization grade of user equipment (UE) 3 and influence degree according to formula (3):

$\mathrm{BUBl}\_{\mathrm{mean}}_{\mathrm{3,4}}^l\left({\mathrm{AL}}_3\right)=\frac{\underset{j=\mathrm{start}({\mathrm{AL}}_3,l)}{\overset{\mathrm{end}({\mathrm{AL}}_3,l)}{\mathrm{\Σ}}}{\mathrm{BUBL}}_{3,j}}{\mathrm{end}({\mathrm{AL}}_3,l)-\mathrm{start}({\mathrm{AL}}_3,l)+1}=\frac{\underset{j=2}{\overset{j=5}{\mathrm{\Σ}}}{\mathrm{BULB}}_{3,j}}{5-2+1}=6.05;$ 3rd computing unit 133 is based on above-mentioned same method, the influence degree mean value of the respective CCE resource group of the influence degree mean value of user equipment (UE) 3CCE resource group 2 (i.e. CCE6 to CCE9) and user equipment (UE) 1, UE2, UE4 to UE6 can be calculated, each influence degree mean value is concrete as shown in Figure 7, describes in detail no longer one by one at this.

Then, distributor 14 is described multiple user equipment allocation CCE resource to be allocated based on described influence degree mean value and priority one by one.Such as, distributor 14 is followed successively by the CCE resource of user equipment (UE) 1, user equipment (UE) 2, user equipment (UE) 3, user equipment (UE) 4, user equipment (UE) 5, user equipment (UE) 6 distribution based on priority.Wherein, for user equipment (UE) 1, distributor 14 selects available CCE resource from its influence degree mean value reckling, such as, be: CCE10-CCE11; For user equipment (UE) 2, distributor 14 selects available CCE resource from its influence degree mean value reckling, such as, be: CCE12-CCE13; For user equipment (UE) 3, distributor 14 selects available CCE resource from its influence degree mean value reckling, such as, be: CCE2-CCE5; For user equipment (UE) 4, distributor 14 selects available CCE resource of joining from its influence degree mean value reckling, such as, be: CCE18-CCE19; For user equipment (UE) 5, distributor 14 selects available CCE resource from its influence degree mean value reckling, such as, be: CCE16; For user equipment (UE) 6, distributor 14 selects available CCE resource from its influence degree mean value reckling, such as, be: CCE6-CCE9; CCE Resourse Distribute as shown in Figure 8.Obviously, for 21 CCE resources for distribution of PDCCH, wherein 15 are assigned to user equipment (UE) 1 to UE6, and the apportionment ratio of the CCE resource of PDCCH is up to 71.4%, and 6 subscriber equipmenies to be allocated all obtain CCE resource, the CCE scheduling of resource rate of subscriber equipment is up to 100%.

To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.In addition, obviously " comprising " one word do not get rid of other unit or step, odd number does not get rid of plural number.Multiple unit of stating in system claims or device also can be realized by software or hardware by a unit or device.First, second word such as grade is used for representing title, and does not represent any specific order.

Claims (8)

1. carry out a method for CCE Resourse Distribute in a communications system, wherein, described method comprises step:

A, based on the priority of each subscriber equipment, determines that predetermined quantity needs to distribute the subscriber equipment multiple to be allocated of CCE resource;

B marks each subscriber equipment to be allocated CCE resource available separately based on the respective C-RNTI of described multiple subscriber equipment to be allocated and polymerization grade;

C based on available separately CCE resource, polymerization grade and the priority of each subscriber equipment to be allocated, calculate each subscriber equipment to be allocated can CCE resource to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute;

D is described multiple user equipment allocation CCE resource to be allocated based on described influence degree and priority one by one.

2. method according to claim 1, wherein, described step b also comprises:

-CCE resource is arranged in horizontal direction, by each subscriber equipment foundation priority arrangement to be allocated at vertical direction, and mark each subscriber equipment to be allocated CCE resource available separately, to form CCE resource mark matrix based on the respective C-RNTI of described multiple subscriber equipment to be allocated and polymerization grade;

Described step c also comprises:

-based on described CCE resource mark matrix according to following formulae discovery median BULB_aux _i,j:

BULB_aux _i,j＝w(AL _i)·AL _i,j·(row _max-i+1)

Wherein, i is the line index in described CCE resource mark matrix,

J is the column index in described CCE resource mark matrix,

AL _i,jfor the mark value that the i-th row j in described CCE resource mark matrix arranges,

W (AL _i) for being arranged in the first predefined weight factor of the subscriber equipment of the i-th row,

Row _maxfor maximum row index;

-based on median according to each subscriber equipment to be allocated of following formulae discovery can CCE resource to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute:

$\begin{array}{c}{\mathrm{BULB}}_{i,j}=\mathrm{BULB}\_{\mathrm{aux}}_{i,j}\\ +\max (\mathrm{BULB}\_{\mathrm{aux}}_{i+1,j},\mathrm{BULB}\_{\mathrm{aux}}_{i+2,j},...,\mathrm{BULB}\_{\mathrm{aux}}_{{\mathrm{row}}_{\max },j})\\ -w\_\mathrm{up}*\max (\mathrm{BULB}\_{\mathrm{aux}}_{1,j},\mathrm{BULB}\_{\mathrm{aux}}_{2,j},...,\mathrm{BULB}\_{\mathrm{aux}}_{i-1,j})\end{array},$

Wherein, w_up is the second predefined weight factor.

3. method according to claim 2, wherein, described step c also comprises:

-based on polymerization grade and influence degree calculate according to the following formula each subscriber equipment can the influence degree mean value of CCE resource group:

$\mathrm{BULB}\_{\mathrm{mean}}_{i,j}^l\left({\mathrm{AL}}_i\right)=\frac{\underset{j=\mathrm{start}({\mathrm{AL}}_i,l)}{\overset{\mathrm{end}({\mathrm{AL}}_i,l)}{\mathrm{\Σ}}}{\mathrm{BULB}}_{i,j}}{\mathrm{end}({\mathrm{AL}}_i,l)-\mathrm{start}({\mathrm{AL}}_i,l)+1},$

Wherein, start (AL _i, l) for be arranged in the i-th row subscriber equipment can l CCE resource group in the original position of CCE resource, end (AL _i, l) be arranged in the i-th row subscriber equipment can l CCE resource group in the end position of CCE resource;

Described steps d comprises:

-be described multiple user equipment allocation CCE resource to be allocated one by one based on described influence degree mean value and priority.

4. the method according to any one of claims 1 to 3, wherein, described communication system comprises: LTE system.

5. carry out an equipment for CCE Resourse Distribute in a communications system, wherein, described equipment comprises:

Determining device, for the priority based on each subscriber equipment, determines that predetermined quantity needs to distribute the subscriber equipment multiple to be allocated of CCE resource;

Labelling apparatus, for marking each subscriber equipment to be allocated CCE resource available separately based on the respective C-RNTI of described multiple subscriber equipment to be allocated and polymerization grade;

Calculation element, for based on available separately CCE resource, polymerization grade and the priority of each subscriber equipment to be allocated, calculate each subscriber equipment to be allocated can CCE resource to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute;

Distributor, for being described multiple user equipment allocation CCE resource to be allocated one by one based on described influence degree and priority.

6. equipment according to claim 5, wherein, described labelling apparatus also for:

-CCE resource is arranged in horizontal direction, by each subscriber equipment foundation priority arrangement to be allocated at column direction, and mark each subscriber equipment to be allocated CCE resource available separately, to form CCE resource mark matrix based on the respective C-RNTI of described multiple subscriber equipment to be allocated and polymerization grade;

Described calculation element comprises:

First computing unit, for based on described CCE resource mark matrix according to following formulae discovery median BULB_aux _i,j:

BULB_aux _i,j＝w(AL _i)·AL _i,j·(row _max-i+1)

Wherein, i is the line index in described CCE resource mark matrix,

J is the column index in described CCE resource mark matrix,

AL _i,jfor the mark value that the i-th row j in described CCE resource mark matrix arranges,

W (AL _i) for being arranged in the first predefined weight factor of the subscriber equipment of the i-th row,

Row _maxfor maximum row index;

Second computing unit, for based on median according to each subscriber equipment to be allocated of following formulae discovery can CCE resource to other subscriber equipmenies to be allocated can the influence degree of CCE Resourse Distribute:

$\begin{array}{c}{\mathrm{BULB}}_{i,j}=\mathrm{BULB}\_{\mathrm{aux}}_{i,j}\\ +\max (\mathrm{BULB}\_{\mathrm{aux}}_{i+1,j},\mathrm{BULB}\_{\mathrm{aux}}_{i+2,j},...,\mathrm{BULB}\_{\mathrm{aux}}_{{\mathrm{row}}_{\max },j})\\ -w\_\mathrm{up}*\max (\mathrm{BULB}\_{\mathrm{aux}}_{1,j},\mathrm{BULB}\_{\mathrm{aux}}_{2,j},...,\mathrm{BULB}\_{\mathrm{aux}}_{i-1,j})\end{array},$

Wherein, w_up is the second predefined weight factor.

7. equipment according to claim 6, wherein, described calculation element also comprises:

3rd computing unit, for calculate according to the following formula based on polymerization grade and influence degree each subscriber equipment can the influence degree mean value of CCE resource group:

$\mathrm{BULB}\_{\mathrm{mean}}_{i,j}^l\left({\mathrm{AL}}_i\right)=\frac{\underset{j=\mathrm{start}({\mathrm{AL}}_i,l)}{\overset{\mathrm{end}({\mathrm{AL}}_i,l)}{\mathrm{\Σ}}}{\mathrm{BULB}}_{i,j}}{\mathrm{end}({\mathrm{AL}}_i,l)-\mathrm{start}({\mathrm{AL}}_i,l)+1},$

Wherein, start (AL _i, l) for be arranged in the i-th row subscriber equipment can l CCE resource group in the original position of CCE resource, end (AL _i, l) be arranged in the i-th row subscriber equipment can l CCE resource group in the end position of CCE resource;

Described allocation units also for:

-be described multiple user equipment allocation CCE resource to be allocated one by one based on described influence degree mean value and priority.

8. the equipment according to any one of claim 5 to 7, wherein, described communication system comprises: LTE system.