CN102387497A - 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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- CN102387497A CN102387497A CN2010102738708A CN201010273870A CN102387497A CN 102387497 A CN102387497 A CN 102387497A CN 2010102738708 A CN2010102738708 A CN 2010102738708A CN 201010273870 A CN201010273870 A CN 201010273870A CN 102387497 A CN102387497 A CN 102387497A
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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 is meant the technology that realizes resource multiplex through the space isolation between the user; Be that the base station is that the user who is in the different separate space distributes identical running time-frequency resource; Thereby improve the utilance of resource, significantly improve the throughput and the user's data transmission rate of system.
The space division multiplexing technology can be widely used in the indoor and outdoors scene, both can be used to promote capacity, message transmission rate and the system spectrum utilance of sub-district, also can be used to improve the covering performance of special screne.The multiplexing identical resource of user that for example can make a plurality of floors in the indoor space division multiplexing of carrying out floor gap, thus power system capacity significantly improved, and switch the sub-district of having reduced simultaneously when the user crosses over floor.Again such as, outdoor, space division multiplexing is applied to the covering of high-speed railway, can reduce the user since in the short time that high-speed mobile causes frequent sub-district switch, effectively improved system's covering performance.
Realize that space division multiplexing just requires the base station can be the user resource allocation position flexibly; Thereby can the pairing user be distributed on the identical running time-frequency resource; And can find out from existing LTE (Long Term Evolution, Long Term Evolution) and LTE-A (Long Term Evolution-Advanced, long-term evolution upgrading) standard code; Different with other physical channels; The resource location of PDCCH (Physical Downlink Control channel, Physical Downlink Control Channel) is not through signaling UE's (User Equipment, subscriber equipment); But according to RNTI (the Radio Network Temporary Identifier of each UE; Radio Network Temporary Identifier) confirm the PDCCH search volume of UE, UE PDCCH to various DCI (Downlink Control Information, Downlink Control Information) form on fixing search volume carries out blind check.The control area is to be made up of the set of CCE (Control Channel Element, control channel unit), the numbering of CCE from 0 to N
CCE, k-1, N wherein
CCE, kIt is the number of the total CCE in the control area in subframe k.
Defining of the PDCCH candidate collection that need detect according to the search volume; Be that set through a PDCCH candidate provides with the definition of the search volume
of certain polymerization grade L wherein, the CCEs of the PDCCH candidate channel m in search volume
provides through following formula:
I=0 wherein ..., L-1, and m=0 ..., M
(L)-1, M
(L)It is the number that in given search volume, needs the PDCCH of detection.UE need detect the polymerization size in the common search space be every kind of PDCCH of L=4 or L=8, need in the search volume that UE assigns, detect the polymerization size simultaneously and be every kind of PDCCH of 1,2,4 or 8.The search volume that common search space and UE assign can be overlapping.For the common search space, the polymerization grade is chosen as L=4 and L=8, its Y
kBe set to 0.For the polymerization grade is the search volume of the UE appointment of L
Its Y
kBe defined as:
Y
k＝(A·Y
k-1)mod?D
Y wherein
-1=n
RNTI≠ 0, A=39827, D=65537,
n
sIt is the timeslot number in the radio frames.
The PDCCH resource allocation that is used to transmit the sub-district common control information is in the common search space, and the PDCCH resource that is used for the transmission user dedicated control information then is distributed in user's dedicated search space.Because each user's dedicated search space is overlapping to some extent; When this user's dedicated search space has been taken and common search space when also having vacant resource; The PDCCH that transmits this user's dedicated control information also can be distributed on the common search space, is 4 or 8 situation but this mode only is applicable to the polymerization grade of PDCCH.
Can find out the polymerization grade decision of common search space by the user, all users' common search locus is identical, can be by user's home space information decision; The position, search volume that UE assigns is determined by user's RNTI and polymerization grade jointly, and user's RNTI distributes when the user initially inserts, and can in scheduling process, not change, and therefore plans for realizing that empty branch need distribute user's RNTI.
Yet the deficiency of prior art is: the allocative decision of user RNTI when not having space division multiplexing at present.
Summary of the invention
The technical problem that the present invention solved has been to provide distribution method and the base station of the RNTI in a kind of SDM system.
The distribution method of a kind of RNTI is provided in the embodiment of the invention, has comprised the steps:
Divide into groups to the RNTI in the SDM system in the base station, every group of corresponding home space;
The home space at terminal is confirmed in the base station;
Corresponding RNTI group is confirmed according to the home space at terminal in the base station;
The base station is the RNTI in the corresponding RNTI group of terminal distribution.
A kind of base station is provided in the embodiment of the invention, has comprised:
Grouping module is used for the RNTI of SDM system is divided into groups, every group of corresponding home space;
Belong to determination module, be used for confirming the home space at terminal;
The group determination module is used for confirming corresponding RNTI group according to the home space at terminal;
Distribution module is used to the RNTI in the corresponding RNTI group of terminal distribution.
Beneficial effect of the present invention is following:
This programme has extensive applicability, can be used for SDM system arbitrarily, and duplex system can be used for solving the employing that is similar to PDCCH arbitrarily and carries out the space division multiplexing of the channel of resource allocation based on RNTI arbitrarily.
Description of drawings
Fig. 1 is the distribution method implementing procedure sketch map of RNTI in the embodiment of the invention;
Fig. 2 is an architecture of base station sketch map in the embodiment of the invention.
Embodiment
The inventor notices in the invention process: the allocative decision of user RNTI when not having space division multiplexing at present; Yet; If RNTI is not planned, adopt empty branch of data channel in the SDM system and PDCCH not the mode of empty branch PDCCH is carried out resource allocation, will under the situation that number of users increases in system the control shortage of resources appear; 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 that is used to transmit Downlink Control Information, information such as user's downlink data resource location and ascending resource distribution all need be through the indication of the DCI among the PDCCH.Along with the increase of number of users, its required control information amount also increases thereupon, after the descending control stock number in the system reaches capacity, divides the increase system open ended number of users thereby just need carry out sky to PDCCH, improves overall system capacity.And the resource allocation of PDCCH is relevant with user's RNTI; Each RNTI is corresponding search volume necessarily; Therefore in the embodiment of the invention scheme according to user attaching allocation of space user RNTI is provided; The PDCCH that is used to guarantee the user of different home space can carry out space division multiplexing, and this scheme also can be applied to other and PDCCH is similar, is confirmed the channel of user resources position by RNTI.Describe below in conjunction with the accompanying drawing specific embodiments of the invention.
Fig. 1 is the distribution method implementing procedure sketch map of RNTI, and is as shown in the figure, when distributing RNTI, can comprise the steps:
Divide into groups to the RNTI in the SDM system in step 101, base station, every group of corresponding home space;
In this step, the RNTI in the system is divided into groups every group of corresponding home space independently; Concrete, can divide into groups according to the resource allocation formula of one or more channels.
The home space at terminal is confirmed in step 102, base station;
In this step,, just can confirm the home space at terminal through the terminal being carried out the home space judgement.
Corresponding RNTI group is confirmed according to the home space at terminal in step 103, base station;
In the enforcement, when divide into groups to the RNTI in the SDM system in the base station, can divide into groups according to the resource allocation formula of one or more channels.
Concrete, when carrying out the RNTI grouping,, then can calculate each RNTI corresponding search space respectively if only need to divide into groups according to the resource allocation formula of a channel, the RNTI that the search volume is identical is classified as row, in the terminal distribution of each row being organized to each again.
Divide the timing can be, and corresponding separate space area coverage and the terminal density of each group, estimate the terminal ratio of each group roughly, confirm RNTI number of each group again according to ratio according to the group number.Can directly adopt the method for mean allocation for the scene of inconvenience estimation.
Divide into groups if need to carry out resource allocation according to a plurality of channels, then can calculate each RNTI corresponding search space respectively according to each channel, all identical RNTI is classified as row with a plurality of channel searchs space, divides into groups according to aforesaid way again.
In the enforcement, when the base station is the RNTI in the corresponding RNTI group of terminal distribution, can distribute by one of following mode or its combination:
When 1, the home space at the terminal is one, after putting in order when in the RNTI of correspondence group, selecting a RNTI perhaps by grouping at random selected a RNTI, distribute to the terminal;
When 2, the home space at the terminal is a plurality of, after putting in order when in the corresponding RNTI group in each space, selecting perhaps by grouping at random selected a RNTI, distribute to the terminal;
When 3, the home space at the terminal is a plurality of, presses preset rules and in the RNTI of each space correspondence group, after group of selection, after putting in order when in the RNTI group of selecting, selecting a RNTI perhaps by grouping at random selected a RNTI, distribute to the terminal.
Concrete, during for terminal distribution RNTI, can in the pairing RNTI group of its home space, select criterions such as a RNTI or putting in order when dividing into groups to select RNTI to distribute at random for each terminal;
RNTI is selected in putting in order in the time of can in the corresponding RNTI group in a plurality of spaces of its ownership, selecting perhaps by grouping at random for the terminal that belongs to a plurality of spaces; Also can be earlier according to selected a certain group of certain criterion; As select to remain the more group of RNTI, and then select at random or criterion such as putting in order when dividing into groups selects RNTI to distribute in this group.
In the enforcement, can further include:
The base station confirms whether the home space at terminal changes;
Corresponding RNTI group is confirmed according to the home space at terminal in the base station after confirming to change;
The base station is the RNTI in the corresponding RNTI group of terminal distribution.
In the enforcement, the base station is the RNTI in the corresponding RNTI group of terminal distribution, can be after indicating terminal initiates to insert at random, is terminal distribution RNTI in the random access procedure at terminal.
Concrete, can be regularly the attaching information of new terminal more, judge whether its attaching information changes; If attaching information changes; The base station indicating terminal is initiated new access at random, is terminal distribution RNTI again, and the original RNTI that distributes in terminal is inserted in its ownership group again.
Based on same inventive concept, a kind of base station also is provided in the embodiment of the invention, because the principle of dealing with problems in the base station is similar with the distribution method of RNTI, so the enforcement of base station can repeat part and repeat no more referring to the enforcement of method.
Fig. 2 is the architecture of base station sketch map, and is as shown in the figure, can comprise in the base station:
Belong to determination module 202, be used for confirming the home space at terminal;
In the enforcement, grouping module can also be further used for when the RNTI in the SDM system is divided into groups, and divides into groups according to the resource allocation formula of one or more channels.
In the enforcement, distribution module can comprise with one of lower unit or its combination:
First allocation units, when being used for home space and being one at the terminal, in the RNTI of correspondence group, select a RNTI or putting in order when dividing into groups to select a RNTI at random after, distribute to the terminal;
Second allocation units when to be used for home space at the terminal be a plurality of, selected at random in the corresponding RNTI group in each space or after putting in order when dividing into groups select a RNTI, are distributed to the terminal;
The 3rd allocation units; When to be used for home space at the terminal be a plurality of; Press preset rules and in the RNTI of each space correspondence group, after group of selection, after putting in order when in the RNTI group of selecting, selecting a RNTI perhaps by grouping at random selected a RNTI, distribute to the terminal.
In the enforcement, the ownership determination module can also be further used for confirming whether the home space at terminal changes;
The group determination module can be further used for after confirming to change, and confirms corresponding RNTI group according to the home space at terminal;
Distribution module can be further used for being the RNTI in the corresponding RNTI group of terminal distribution.
In the enforcement, can further include in the base station:
Indicating module 205 is used for after the home space of confirming the terminal changes, and indicating terminal initiates to insert at random;
When distribution module can be further used for the RNTI in the RNTI group corresponding for terminal distribution, in the random access procedure at terminal terminal distribution RNTI.
For the convenience of describing, the each several part of the above device is divided into various modules with function or the unit is described respectively.Certainly, when embodiment of the present invention, can in same or a plurality of softwares or hardware, realize the function of each module or unit.
From the above, proposed in SDM system to distribute for the user scheme of RNTI in the embodiment of the invention based on the user attaching spatial information.
When distributing RNTI for the user, earlier the RNTI in the system is divided into groups, specifically can include but not limited to: the resource allocation formula according to one or more channels divides into groups; The user is carried out the home space judgement, confirm user's home space; Distribute RNTI for the user then.
Concrete, can comprise when distributing RNTI:
If the user has only a home space, then only in the corresponding RNTI group in this space, select a RNTI; If a group is then selected in a plurality of spaces of user attaching from a plurality of RNTI groups,, from group, select RNTI again such as selecting or select the more group of residue RNTI at random.
From group, select the method for RNTI to include but not limited to: to select at random or according to the selection that puts in order of dividing into groups;
Further, can also regularly upgrade user's attaching information, judge whether to redistribute RNTI.
Specifically can comprise:
If attaching information changes, then the base station is again for the user distributes RNTI, and the original RNTI that distributes of user is inserted in its ownership group again;
This programme has extensive applicability; Can be used for SDM system arbitrarily; Any duplex system: like TDD (Time Division Duplex; Time division duplex) system or FDD (Frequency Division Duplex, FDD) system can be used for solving the employing that is similar to PDCCH arbitrarily and carries out the space division multiplexing of the channel of resource allocation based on RNTI.
Can effectively solve in the SDM system PDCCH and with the resource allocation problem of the similar channel of PDCCH;
After the RNTI planning, respective channel to be paired into power higher, the pairing algorithm is simple;
Can consider the space division multiplexing of a plurality of channels simultaneously.
Those skilled in the art should understand that embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of the embodiment of complete hardware embodiment, complete software implementation example or combination software and hardware aspect.And the present invention can be employed in the form that one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code go up the computer program of implementing.
The present invention is that reference is described according to the flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or the block diagram and/or square frame and flow chart and/or the 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, make the instruction of carrying out through the processor of computer or other programmable data processing device produce to be used for the device of the function that is implemented in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in ability vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work; Make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is implemented in the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded on computer or other programmable data processing device; Make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of on computer or other programmable devices, carrying out is provided for being implemented in the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic inventive concept could of cicada, then can make other change and modification to these embodiment.So accompanying claims is intended to be interpreted as all changes and the modification that comprises preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. the distribution method of a Radio Network Temporary Identifier RNTI is characterized in that, comprises the steps:
Divide into groups to the RNTI in the SDM system in the base station, every group of corresponding home space;
The home space at terminal is confirmed in the base station;
Corresponding RNTI group is confirmed according to the home space at terminal in the base station;
The base station is the RNTI in the corresponding RNTI group of terminal distribution.
2. the method for claim 1 is characterized in that, when divide into groups to the RNTI in the SDM system in the base station, divides into groups according to the resource allocation formula of one or more channels.
3. the method for claim 1 is characterized in that, when the base station is the RNTI in the corresponding RNTI group of terminal distribution, distributes by one of following mode or its combination:
When the home space at the terminal is one, after putting in order when in the RNTI of correspondence group, selecting a RNTI perhaps by grouping at random selected a RNTI, distribute to the terminal;
When the home space at the terminal is a plurality of, after putting in order when in the corresponding RNTI group in each space, selecting perhaps by grouping at random selected a RNTI, distribute to the terminal;
When the home space at the terminal is a plurality of, presses preset rules and in the RNTI of each space correspondence group, after group of selection, after putting in order when in the RNTI group of selecting, selecting a RNTI perhaps by grouping at random selected a RNTI, distribute to the terminal.
4. like the arbitrary described method of claim 1 to 3, it is characterized in that, further comprise:
The base station confirms whether the home space at terminal changes;
Corresponding RNTI group is confirmed according to the home space at terminal in the base station after confirming to change;
The base station is the RNTI in the corresponding RNTI group of terminal distribution.
5. method as claimed in claim 4 is characterized in that, the base station is the RNTI in the corresponding RNTI group of terminal distribution, is after indicating terminal initiates to insert at random, is terminal distribution RNTI in the random access procedure at terminal.
6. a base station is characterized in that, comprising:
Grouping module is used for the RNTI of SDM system is divided into groups, every group of corresponding home space;
Belong to determination module, be used for confirming the home space at terminal;
The group determination module is used for confirming corresponding RNTI group according to the home space at terminal;
Distribution module is used to the RNTI in the corresponding RNTI group of terminal distribution.
7. base station as claimed in claim 6 is characterized in that, grouping module is further used for when the RNTI in the SDM system is divided into groups, and divides into groups according to the resource allocation formula of one or more channels.
8. base station as claimed in claim 6 is characterized in that, distribution module comprises with one of lower unit or its combination:
First allocation units, when being used for home space and being one at the terminal, in the RNTI of correspondence group, select a RNTI or putting in order when dividing into groups to select a RNTI at random after, distribute to the terminal;
Second allocation units when to be used for home space at the terminal be a plurality of, selected at random in the corresponding RNTI group in each space or after putting in order when dividing into groups select a RNTI, are distributed to the terminal;
The 3rd allocation units; When to be used for home space at the terminal be a plurality of; Press preset rules and in the RNTI of each space correspondence group, after group of selection, after putting in order when in the RNTI group of selecting, selecting a RNTI perhaps by grouping at random selected a RNTI, distribute to the terminal.
9. like the arbitrary described base station of claim 6 to 8, it is characterized in that,
The ownership determination module is further used for confirming whether the home space at terminal changes;
The group determination module is further used for after confirming to change, and confirms corresponding RNTI group according to the home space at terminal;
Distribution module is further used for being the RNTI in the corresponding RNTI group of terminal distribution.
10. base station as claimed in claim 9 is characterized in that, further comprises:
Indicating module is used for after the home space of confirming the terminal changes, and indicating terminal initiates to insert at random;
When distribution module is further used for the RNTI in the RNTI group corresponding for terminal distribution, in the random access procedure at terminal terminal distribution RNTI.
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| CN106658429A (en) * | 2015-10-28 | 2017-05-10 | 普天信息技术有限公司 | Method and system for allocating group calling RNTI of cluster group |
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