CN102387497B - Base station and allocation method of radio network temporary identities - Google Patents
Base station and allocation method of radio network temporary identities Download PDFInfo
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- CN102387497B CN102387497B CN201010273870.8A CN201010273870A CN102387497B CN 102387497 B CN102387497 B CN 102387497B CN 201010273870 A CN201010273870 A CN 201010273870A CN 102387497 B CN102387497 B CN 102387497B
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Abstract
The invention discloses a base station and an allocation method of radio network temporary identities. The allocation method comprises the following steps of: grouping the radio network temporary identities in a space division multiplexing system by the base station, wherein each group corresponds to an attribution space; determining the attribution space of a terminal by the base station; determining a corresponding radio network temporary identity group according to the attribution space of the terminal by the base station; and allocating the radio network temporary identities in the corresponding radio network temporary identity group for the terminal by the base station. The allocation method has the advantages that: the scheme has wide applicability, can be used for any space division multiplexing systems and any duplex systems, and can effectively solve the resource allocation problems of physical downlink control channels and the channels similar to the physical downlink control channels in the space division multiplexing system; after programming of the radio network temporary identities, the mating success rate of corresponding channels is higher and a mating algorithm is simple; and space division multiplexing of multiple channels can be simultaneously considered.
Description
Technical field
The present invention relates to wireless communication technology, particularly a kind of distribution method of Radio Network Temporary Identifier and base station.
Background technology
Space division multiplexing mainly refers to the technology that realizes resource multiplex by the space isolation between user, be that base station is the identical running time-frequency resource of user assignment being in different separate space, thereby the utilance that improves resource, significantly improves the throughput of system and user's message transmission rate.
Space division multiplexing technology can be widely used in indoor and outdoors scene, both can be for having promoted capacity, message transmission rate and the system spectrum utilance of community, and also can be for improving the covering performance of special screne.The multiplexing identical resource of user that for example can make multiple floors in the indoor space division multiplexing of carrying out floor gap, thus power system capacity significantly improved, reduce user simultaneously and crossed over the switching of floor Shi community.Again such as, outdoor, space division multiplexing is applied to the covering of high-speed railway, can reduce in the short time that user causes due to high-speed mobile community frequently and switch, effectively improved system covering performance.
Realizing space division multiplexing, just to require base station can be flexibly user resource allocation position, thereby can be by pairing user assignment on identical running time-frequency resource, and from existing LTE (Long Term Evolution, Long Term Evolution) and LTE-A (Long Term Evolution-Advanced, long-term evolution upgrading) standard regulation can find out, different from other physical channels, PDCCH (Physical Downlink Control channel, Physical Downlink Control Channel) resource location be not by signaling UE (User Equipment, subscriber equipment), but according to the RNTI of each UE (Radio Network Temporary Identifier, Radio Network Temporary Identifier) determine the PDCCH search volume of UE, UE on fixing search volume to various DCI (Downlink Control Information, Downlink Control Information) PDCCH of form carries out blind check.Control area is to be made up of the set of CCE (Control Channel Element, control channel unit), and the numbering of CCE is from 0 to N
cCE, k-1, wherein N
cCE, kit is the number of the total CCE in the control area in subframe k.
Need the PDCCH candidate collection that detects according to search volume definition, wherein with the search volume of certain polymerization grade L
definition be to provide by a PDCCH candidate's set, in search volume
in the CCEs of PDCCH candidate channel m be formula by below:
Wherein i=0 ..., L-1, and m=0 ..., M
(L)-1, M
(L)it is the number that needs the PDCCH detecting in given search volume.UE need to detect polymerization size every kind of PDCCH for L=4 or L=8 in public search space, detect polymerization size and be every kind of PDCCH of 1,2,4 or 8 in the search volume that simultaneously need to assign at a UE.The search volume that public search space and UE assign can be overlapping.For public search space, polymerization grade is chosen as L=4 and L=8, its Y
kbe set to 0.The search volume that the UE that is L for polymerization grade assigns
its Y
kbe defined as:
Y
k＝(A·Y
k-1)mod?D
Wherein Y
-1=n
rNTI≠ 0, A=39827, D=65537,
n
sit is a timeslot number in radio frames.
Be distributed in public search space for the PDCCH resource of transmitting community common control information, be distributed in user's dedicated search space for the PDCCH resource of transmission user dedicated control information.Because each user's dedicated search space is overlapping to some extent, when this user's dedicated search space has been occupied full and public search space while also having vacant resource, the PDCCH that transmits this user's dedicated control information also can be distributed on public search space, is 4 or 8 situation but this mode is only applicable to the polymerization grade of PDCCH.
Can find out that public search space is determined by user's polymerization grade, all users' public search space position is identical, can be determined by user's home space information; The position, search volume that UE assigns is determined jointly by user's RNTI and polymerization grade, and user's RNTI distributes in the time that user initially accesses, and can in scheduling process, not change, and therefore need to user's RNTI be distributed and be planned for realizing empty point.
But the deficiencies in the prior art are: the allocative decision of user RNTI while thering is no space division multiplexing at present.
summary of the invention
Technical problem solved by the invention has been to provide distribution method and the base station of the RNTI in a kind of SDM system.
The distribution method that a kind of RNTI is provided in the embodiment of the present invention, comprises the steps:
Divide into groups to the RNTI in SDM system in base station, every group of corresponding home space;
The home space of terminal is determined in base station;
Corresponding RNTI group is determined according to the home space of terminal in base station;
Base station is the RNTI in RNTI group corresponding to terminal distribution;
Wherein, described home space is actual geographical position.
A kind of base station is provided in the embodiment of the present invention, has comprised:
Grouping module, divides into groups for the RNTI to SDM system, every group of corresponding home space;
Ownership determination module, for determining the home space of terminal;
Group determination module, for determining corresponding RNTI group according to the home space of terminal;
Distribution module, is used to the RNTI in RNTI group corresponding to terminal distribution;
Wherein, described home space is actual geographical position.
Beneficial effect of the present invention is as follows:
This programme has applicability widely, can be for SDM system arbitrarily, and duplex system arbitrarily, can be used for solving the employing that is similar to arbitrarily PDCCH and carries out the space division multiplexing of the channel of resource distribution based on RNTI.
brief description of the drawings
Fig. 1 is the distribution method implementing procedure schematic diagram of RNTI in the embodiment of the present invention;
Fig. 2 is architecture of base station schematic diagram in the embodiment of the present invention.
embodiment
Inventor notices in invention process: the allocative decision of user RNTI while thering is no space division multiplexing at present, but, if RNTI is not planned, in SDM system, adopt empty point of data channel and the mode of not empty point of PDCCH is carried out resource distribution to PDCCH, the in the situation that of will number of users increases in system, there is controlling shortage of resources, thereby the open ended number of users of the system that limited, has reduced the throughput peak value that system can reach.
Because PDCCH is the physical channel for transmitting Downlink Control Information, user's the information such as downlink data resource location and ascending resource distribution all needs by the DCI instruction in PDCCH.Along with the increase of number of users, its required control information amount also increases thereupon, after the descending control stock number in system reaches capacity, thereby just need to carry out the sky point open ended number of users of increase system to PDCCH, improves overall system capacity.And the distribution of the resource of PDCCH is relevant with user's RNTI, each RNTI correspondence certain search volume, therefore in the embodiment of the present invention, provide according to the scheme of user attaching allocation of space user RNTI, the PDCCH that is used for the user who ensures different home space can carry out space division multiplexing, this scheme also can be applied to other and PDCCH is similar, is determined the channel of user resources position by RNTI.Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
Fig. 1 is the distribution method implementing procedure schematic diagram of RNTI, as shown in the figure, in the time distributing RNTI, can comprise the steps:
Divide into groups to the RNTI in SDM system in step 101, base station, every group of corresponding home space;
In this step, the RNTI in system is divided into groups, every group of corresponding home space independently; Concrete, can distribute formula to divide into groups according to the resource of one or more channels.
The home space of terminal is determined in step 102, base station;
In this step, by terminal is carried out to home space judgement, just can determine the home space of terminal.
Corresponding RNTI group is determined according to the home space of terminal in step 103, base station;
Step 104, base station are the RNTI in RNTI group corresponding to terminal distribution.
In enforcement, while grouping to the RNTI in SDM system in base station, can distribute formula to divide into groups according to the resource of one or more channels.
Concrete, in the time carrying out RNTI grouping, if only need distribute formula grouping according to the resource of a channel, can calculate respectively the search volume that each RNTI is corresponding, RNTI identical search volume is classified as to row, then by the terminal distribution of each row in each group.
Point timing can be according to group number, and respectively organizes corresponding separate space area coverage and terminal density, estimates roughly the terminal ratio of each group, then according to the RNTI number of the each group of ratio-dependent.Can directly adopt the method for mean allocation for the scene of inconvenience estimation.
If need carry out resource allocation packets according to multiple channels, can calculate respectively the search volume that each RNTI is corresponding according to each channel, by multiple channel searchs space all identical RNTI be classified as row, then divide into groups in the manner described above.
In enforcement, when base station is the RNTI in RNTI group corresponding to terminal distribution, one of can be in the following manner or its combination distribute:
1,, in the time that the home space of terminal is one, select a RNTI or putting in order during by grouping selected, after a RNTI, to distribute to terminal at random in corresponding RNTI group;
2, in the home space of terminal while being multiple, random select or putting in order during by grouping selected, after a RNTI, to distribute to terminal in RNTI group corresponding to each space;
3,, select after a group in RNTI group corresponding to each space by preset rules while being multiple in the home space of terminal, select a RNTI or putting in order during by grouping selected, after a RNTI, to distribute to terminal at random in the RNTI group of selecting.
Concrete, during for terminal distribution RNTI, can select a RNTI or the criterion such as putting in order during by grouping selects RNTI to distribute for each terminal is random in the corresponding RNTI group of its home space;
For ownership multiple spaces terminal can in RNTI group corresponding to multiple spaces of its ownership, select at random or by divide into groups time put in order selection RNTI, also can be first according to selected a certain group of certain criterion, remain the more group of RNTI as selected, and then select or the criterion such as putting in order during by grouping selects RNTI to distribute this group is random.
In enforcement, can further include:
Base station determines whether the home space of terminal changes;
Corresponding RNTI group, after definite changing, is determined according to the home space of terminal in base station;
Base station is the RNTI in RNTI group corresponding to terminal distribution.
In enforcement, base station is the RNTI in RNTI group corresponding to terminal distribution, can be to initiate after random access at indicating terminal, and in the random access procedure of terminal, be terminal distribution RNTI.
Concrete, can the more attaching information of new terminal of timing, judge whether its attaching information changes, if attaching information changes, base station indicating terminal is initiated new random access, is terminal distribution RNTI again, and the original terminal RNTI distributing is inserted in its ownership group again.
Based on same inventive concept, a kind of base station is also provided in the embodiment of the present invention, because the principle of dealing with problems in base station is similar to the distribution method of RNTI, therefore the enforcement of base station can be referring to the enforcement of method, repeats part and repeat no more.
Fig. 2 is architecture of base station schematic diagram, as shown in the figure, in base station, can comprise:
Grouping module 201, divides into groups for the RNTI to SDM system, every group of corresponding home space;
Ownership determination module 202, for determining the home space of terminal;
Group determination module 203, for determining corresponding RNTI group according to the home space of terminal;
Distribution module 204, is used to the RNTI in RNTI group corresponding to terminal distribution.
In enforcement, grouping module can also be further used in the time that the RNTI in SDM system is divided into groups, and distributes formula to divide into groups according to the resource of one or more channels.
In enforcement, distribution module can comprise with one of lower unit or its combination:
The first allocation units, in the time that the home space of terminal is one, select a RNTI or putting in order during by grouping selected, after a RNTI, to distribute to terminal at random in corresponding RNTI group;
The second allocation units, when being multiple in the home space of terminal, random select or putting in order during by grouping selected, after a RNTI, to distribute to terminal in RNTI group corresponding to each space;
The 3rd allocation units, for in the home space of terminal while being multiple, select after a group in RNTI group corresponding to each space by preset rules, select a RNTI or putting in order during by grouping selected, after a RNTI, to distribute to terminal at random in the RNTI group of selecting.
In enforcement, ownership determination module can also be further used for determining whether the home space of terminal changes;
Group determination module can be further used for, after definite changing, determining corresponding RNTI group according to the home space of terminal;
Distribution module can be further used for as the RNTI in RNTI group corresponding to terminal distribution.
In enforcement, in base station, can further include:
Indicating module 205, after changing in the home space of determining terminal, indicating terminal is initiated random access;
When distribution module can be further used for the RNTI in the RNTI group corresponding for terminal distribution, in the random access procedure of terminal, be terminal distribution RNTI.
For convenience of description, the each several part of the above device is divided into various modules with function or unit is described respectively.Certainly, in the time that enforcement is of the present invention, the function of each module or unit can be realized in same or multiple software or hardware.
From the above, in the embodiment of the present invention, having proposed in SDM system is the scheme of user assignment RNTI based on user attaching spatial information.
In the time being user assignment RNTI, first the RNTI in system is divided into groups, specifically can include but not limited to: distribute formula to divide into groups according to the resource of one or more channels; User is carried out to home space judgement, determine user's home space; Then be user assignment RNTI.
Concrete, while distributing RNTI, can comprise:
If user only has a home space, only in RNTI group corresponding to this space, select a RNTI; If a group is selected in the multiple spaces of user attaching from multiple RNTI groups, select or select the more group of residue RNTI such as random, then from group, select RNTI.
From group, select the method for RNTI to include but not limited to: selection or the selection that puts in order according to grouping at random;
Further, can also regularly upgrade user's attaching information, judge whether to redistribute RNTI.
Specifically can comprise:
If attaching information changes, base station is user assignment RNTI again, and the original user RNTI distributing is inserted in its ownership group again;
This programme has applicability widely, can be for SDM system arbitrarily, duplex system arbitrarily: as TDD (Time Division Duplex, time division duplex) system or FDD (Frequency Division Duplex, Frequency Division Duplexing (FDD)) system, can be used for solving the employing that is similar to arbitrarily PDCCH and carry out the space division multiplexing of the channel of resource distribution based on RNTI.
Can effectively solve PDCCH in SDM system and the resource allocation problem with the similar channel of PDCCH;
After RNTI planning, respective channel to be paired into power higher, pairing algorithm is simple;
Can consider the space division multiplexing of multiple channels simultaneously.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the present invention can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if these amendments of the present invention and within modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (8)
1. a distribution method of Radio Network Temporary Identifier RNTI, is characterized in that, comprises the steps:
Divide into groups to the RNTI in SDM system in base station, every group of corresponding home space;
The home space of terminal is determined in base station;
Corresponding RNTI group is determined according to the home space of terminal in base station;
Base station is the RNTI in RNTI group corresponding to terminal distribution;
Wherein, described home space is actual geographical position;
Wherein, when base station is the RNTI in RNTI group corresponding to terminal distribution, one of in the following manner or its combination distribute:
In the time that the home space of terminal is one, select a RNTI or putting in order during by grouping selected, after a RNTI, to distribute to terminal at random in corresponding RNTI group;
In the home space of terminal while being multiple, random select or putting in order during by grouping selected, after a RNTI, to distribute to terminal in RNTI group corresponding to each space;
, select after a group in RNTI group corresponding to each space by preset rules while being multiple in the home space of terminal, select a RNTI or putting in order during by grouping selected, after a RNTI, to distribute to terminal at random in the RNTI group of selecting.
2. the method for claim 1, is characterized in that, while grouping to the RNTI in SDM system in base station, distributes formula to divide into groups according to the resource of one or more channels.
3. method as claimed in claim 1 or 2, is characterized in that, further comprises:
Base station determines whether the home space of terminal changes;
Corresponding RNTI group, after definite changing, is determined according to the home space of terminal in base station;
Base station is the RNTI in RNTI group corresponding to terminal distribution.
4. method as claimed in claim 3, is characterized in that, base station is the RNTI in RNTI group corresponding to terminal distribution, be to initiate after random access at indicating terminal, and in the random access procedure of terminal, be terminal distribution RNTI.
5. a base station, is characterized in that, comprising:
Grouping module, divides into groups for the RNTI to SDM system, every group of corresponding home space;
Ownership determination module, for determining the home space of terminal;
Group determination module, for determining corresponding RNTI group according to the home space of terminal;
Distribution module, is used to the RNTI in RNTI group corresponding to terminal distribution;
Wherein, described home space is actual geographical position;
Wherein, distribution module comprises with one of lower unit or its combination:
The first allocation units, in the time that the home space of terminal is one, select a RNTI or putting in order during by grouping selected, after a RNTI, to distribute to terminal at random in corresponding RNTI group;
The second allocation units, when being multiple in the home space of terminal, random select or putting in order during by grouping selected, after a RNTI, to distribute to terminal in RNTI group corresponding to each space;
The 3rd allocation units, for in the home space of terminal while being multiple, select after a group in RNTI group corresponding to each space by preset rules, select a RNTI or putting in order during by grouping selected, after a RNTI, to distribute to terminal at random in the RNTI group of selecting.
6. base station as claimed in claim 5, is characterized in that, grouping module is further used in the time that the RNTI in SDM system is divided into groups, and distributes formula to divide into groups according to the resource of one or more channels.
7. the base station as described in claim 5 or 6, is characterized in that,
Ownership determination module is further used for determining whether the home space of terminal changes;
Group determination module is further used for, after definite changing, determining corresponding RNTI group according to the home space of terminal;
Distribution module is further used for as the RNTI in RNTI group corresponding to terminal distribution.
8. base station as claimed in claim 7, is characterized in that, further comprises:
Indicating module, after changing in the home space of determining terminal, indicating terminal is initiated random access;
When distribution module is further used for the RNTI in the RNTI group corresponding for terminal distribution, in the random access procedure of terminal, be terminal distribution RNTI.
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| EP3425943B1 (en) | 2012-12-11 | 2020-06-17 | Huawei Technologies Co., Ltd. | Ue communication method, device, and communications system |
| CN103906043B (en) * | 2012-12-28 | 2017-08-11 | 电信科学技术研究院 | A kind of RNTI distribution methods and device |
| CN104427494B (en) * | 2013-09-05 | 2018-02-09 | 普天信息技术研究院有限公司 | The distribution method of Radio Network Temporary Identifier |
| CN106559875B (en) * | 2015-09-24 | 2020-06-30 | 大唐移动通信设备有限公司 | RNTI (radio network temporary identifier) allocation method and device |
| CN106658429B (en) * | 2015-10-28 | 2019-09-06 | 普天信息技术有限公司 | A kind of group for distributing cluster group exhales the method and system of RNTI |
| CN109005536B (en) * | 2018-08-08 | 2020-02-14 | 北京邮电大学 | Conflict-free wireless network temporary identifier distribution method |
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| CN101155421A (en) * | 2006-09-29 | 2008-04-02 | 北京三星通信技术研究有限公司 | Method and device for distributing temporary recognition number of subdistrict wireless network |
| CN101646202A (en) * | 2009-08-25 | 2010-02-10 | 普天信息技术研究院有限公司 | Realizing method of semi-static dispatching downlink transmission |
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| CN101247176A (en) * | 2007-02-12 | 2008-08-20 | 华硕电脑股份有限公司 | Method for improving high-speed downlink operation in cell_fach state for a wireless communications system and related apparatus |
| CN100563375C (en) * | 2007-04-27 | 2009-11-25 | 上海华为技术有限公司 | Urnti distribution method and device thereof |
| CN101764631A (en) * | 2008-12-23 | 2010-06-30 | 中兴通讯股份有限公司 | Downlink signal-transmitting method of long-term advancing time division duplex indoor distribution system |
| KR20100080280A (en) * | 2008-12-31 | 2010-07-08 | 삼성전자주식회사 | Method for controlling transmission in mobile telecommunication system using shared harq process |
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| CN101155421A (en) * | 2006-09-29 | 2008-04-02 | 北京三星通信技术研究有限公司 | Method and device for distributing temporary recognition number of subdistrict wireless network |
| CN101646202A (en) * | 2009-08-25 | 2010-02-10 | 普天信息技术研究院有限公司 | Realizing method of semi-static dispatching downlink transmission |
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Effective date of registration: 20210531 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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