CN102026205A - Method and device for planning physical cell ID (Identification) - Google Patents

Method and device for planning physical cell ID (Identification) Download PDF

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Publication number
CN102026205A
CN102026205A CN2010106119942A CN201010611994A CN102026205A CN 102026205 A CN102026205 A CN 102026205A CN 2010106119942 A CN2010106119942 A CN 2010106119942A CN 201010611994 A CN201010611994 A CN 201010611994A CN 102026205 A CN102026205 A CN 102026205A
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China
Prior art keywords
district id
physical district
frequency domain
play amount
described
Prior art date
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CN2010106119942A
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Chinese (zh)
Inventor
潘荣伟
蔡玉婷
周慧茹
宋红兵
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大唐移动通信设备有限公司
上海大唐移动通信设备有限公司
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Priority to CN2010106119942A priority Critical patent/CN102026205A/en
Publication of CN102026205A publication Critical patent/CN102026205A/en

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Abstract

The invention relates to the field of communications, discloses a method and device for planning a physical cell ID (Identification), used for avoiding adverse influence on the performances of a special reference signal of the physical cell. The method comprises the following steps of: determining the current cell of the physical cell ID to be allocated and an adjacent cell of the current cell; and allocating the physical cell ID for the current cell on the basis of the CRS (Computer Reservation System) frequency-domain offset corresponding to the physical cell ID of the adjacent cell. Therefore, the CRSs between every two adjacent cells are staggered at frequency-domain positions on the basis of the planning of the physical cell ID, further the same-frequency interference of the CRSs generated between adjacent cells can be avoided, the signal quality can be improved and the performances of the system are effectively improved.

Description

A kind of planing method of physical district ID and device

Technical field

The present invention relates to the communication technology, particularly a kind of planing method of physical district ID and device.

Background technology

At TD-LTE (Time Division Long Term Evolution, synchronous Long Term Evolution of time-division) in the system, because physical district ID (sign) is bound one by one with mechanism such as resource mapping, sign indicating number resource distribution and frequency hoppings, so the same TD-SCDMA of the configuration of physical district ID (Time Division Synchronized Code Division Multiple Access, TD SDMA) the scrambling code planning effect in the system is suitable, seems particularly important in identical networking.

Physical district ID is major decision information, particularly broadcast channel and the control channel that the scrambler initial value generates in the physical channel, and the correlation of physical district ID has determined the correlation of control channel scrambler, plays a part crucial to the interference of channel; And because physical district ID and PSC (Primary Synchronisation Code, Primary Synchronisation Code)/S SC (Secondary Synchronisation Code, secondary synchronization code) sequence index is number one by one corresponding, produce interference for fear of neighbor cell, need reasonably plan 504 physical-layer cell ID.

Under the prior art, plan for the physical district ID in the TD-LTE system, in 3GPP 36.211, stipulated correlation principle, be a cell cluster with 30 sub-districts exactly, the physical district ID of 30 sub-districts in cell cluster will be selected in 30 physical district IDs, select in [0~29] such as 30 sub-district physical district IDs in first cell cluster, the physical district ID of 30 sub-districts in another cell cluster is selected in [30~59].This shows, principle among the 3GPP 36.211 is relatively simple, the planning of only having considered physical district ID can guarantee the scrambler quadrature of up channel, and do not consider that the planning of physical district ID also can influence the performance of cell special reference, therefore, must carry out more strict physical district ID planning.

Summary of the invention

The embodiment of the invention provides a kind of planing method and device of physical district ID, in order to avoid that the performance of physical area DRS (Dedicated Reference Signal) is produced harmful effect.

The concrete technical scheme that the embodiment of the invention provides is as follows:

A kind of planing method of physical district ID is characterized in that, comprising:

Determine the current area of physical district ID to be allocated, and the adjacent sub-district of described current area;

Based on the CRS frequency domain side-play amount of the physical district ID correspondence of described adjacent sub-district, be that described current area is distributed physical district ID.

A kind of device for planning of physical district ID is characterized in that, comprising:

Determining unit is used for determining the current area of physical district ID to be allocated and the adjacent sub-district of described current area;

Allocation units are used for the CRS frequency domain side-play amount based on the physical district ID correspondence of described adjacent sub-district, for described current area is distributed physical district ID.

In the inventive embodiments, CRS frequency domain side-play amount based on the adjacent sub-district physical district ID correspondence of current area, for current area is distributed physical district ID, like this, just can make the CRS between the neighbor cell on frequency domain position, stagger, thereby avoid between neighbor cell, producing the co-channel interference of CRS, when having improved signal quality, also promoted systematic function effectively.

Description of drawings

Fig. 1 is a base station functions structural representation in the embodiment of the invention;

Fig. 2 carries out the physical district ID planning flow chart for base station in the embodiment of the invention;

Embodiment

Produce harmful effect for fear of performance to the physical area DRS (Dedicated Reference Signal), in the embodiment of the invention, when the physical district ID of each sub-district of planning, obtain the physical district ID of the adjacent sub-district of current area earlier, again based on CRS (cell special reference) the frequency domain side-play amount of the physical district ID correspondence of each adjacent sub-district, for current area is distributed physical district ID, like this, can distribute the physical district ID that can not cause CRS to disturb for current area with reference to the CRS frequency domain side-play amount of the physical district ID correspondence that is assigned to of each adjacent sub-district.

Below in conjunction with accompanying drawing the preferred embodiment of the present invention is elaborated.

Consult shown in Figure 1ly, in the embodiment of the invention, the device to physical district ID is planned as the base station, comprises determining unit 10 and allocation units 11, wherein,

Determining unit 10 is used for determining the current area of physical district ID to be allocated and the adjacent sub-district of current area;

Allocation units 11 are used for the CRS frequency domain side-play amount based on the physical district ID correspondence of adjacent sub-district, for described current area is distributed physical district ID.

As shown in Figure 1, in the embodiment of the invention, further be provided with updating block 12 in the base station, be used for alternative physical district ID being upgraded according to setting cycle.

Consult shown in Figure 2ly, in the embodiment of the invention, the base station is that the detailed process of cell allocation physical district ID is as follows:

Is step 200: the cell list of physical district ID to be allocated empty? if, then finish current flow process, otherwise, execution in step 201.

In the embodiment of the invention, the cell list of a physical district ID to be allocated of base station maintenance, therefrom read out a sub-district at every turn and carry out the physical district ID distribution, after being allocated successfully, this sub-district is deleted from the cell list of physical I D to be allocated, when being empty in this tabulation, illustrate that all sub-districts all have been assigned to physical district ID, can stop allocation flow.

With the LTE system is example, in the LTE system, and physical-layer cell ID Wherein, Be physical layer ID group id, its span is 0~167, Be physical layer ID sign in organizing, its span is 0~2, With Represent the sequence index number of SSC (auxiliary synchronous signals) and PSC (master sync signal) respectively.

Step 201: from the cell list of physical district ID to be allocated, choose a sub-district, hereinafter referred to as current area.

Step 202: determine all the adjacent sub-districts of current area and the physical district ID of each adjacent sub-district.

In the present embodiment,, have unallocated adjacent sub-district to physical district ID if in all adjacent sub-districts of current area, then should the neighbour sub-district not within the limit of consideration of present embodiment; Further, suppose that the adjacent sub-district of current area is all unallocated to physical district ID, then can directly the current alternative physical district ID of choosing be distributed to current area.

Step 203: from alternative physical district ID tabulation, choose an alternative physical district ID.

In the present embodiment, physical district ID≤504 of preserving in the tabulation of alternative physical district ID when choosing, are read one arbitrarily at every turn from tabulation.

Do step 204: the CRS of alternative physical district ID correspondence (cell special reference) the frequency domain side-play amount CRS frequency domain side-play amount corresponding with the physical district ID of any one adjacent sub-district equate? if then execution in step 205; Otherwise, execution in step 208.

In the embodiment of the invention, why execution in step 204 is overlapping on frequency domain position for fear of the CRS of current area and adjacent sub-district, thereby causes CRS each other to disturb, and the calculating of CRS frequency domain side-play amount is relevant with physical district ID, can be expressed as: Wherein, v ShiftBe CRS frequency domain side-play amount, Be physical district ID, be also referred to as CELL ID, M is a parameter preset; Generally, the frequency domain density of CRS, relative position are all fixed, and for single port, normally are to have a CRS in per 6 subcarriers, and be therefore preferable, M=6.

With one group of 6 subcarrier is example, and these 6 subcarriers use common CRS, are called CRSx, and it is according to V that each sub-district is specifically used CRSx on which subcarrier in 6 subcarriers ShiftValue determine, suppose three sub-districts, be called CELL1, CELL2 and CELL3, its CRS frequency domain side-play amount separately is respectively: v Shift 1=0, expression CELL1 uses CRSx, v on 0 work song carrier wave Shift 2=2, promptly CELL2 uses CRSx, v on 2 work song carrier waves Shift 3=5, promptly CELL3 uses CRSx on 5 work song carrier waves, this shows, as long as each sub-district uses the subcarrier of CRSx inequality, the minizone just can not produce CRS and disturb,

Therefore, do not disturb in order not produce CRS between each sub-district after planning, the v of the physical district ID correspondence of each sub-district will be avoided in the base station as far as possible when the physical district ID of each sub-district of rule ShiftValue identical.For example, in the present embodiment, the base station is in planning during physical district ID, employing to evade principle as shown in table 1:

Table 1

Is step 205: after judging the current alternative physical district ID of choosing of deletion, alternative physical district ID tabulation empty? if then execution in step 207; Otherwise, execution in step 206.

In the present embodiment, when execution in step 205, if behind the current alternative physical district ID of choosing of deletion, alternative physical district ID tabulation is for empty, then explanation not more suitably alternative physical district ID for you to choose, therefore, though the alternative physical district ID of choosing for current area, conflict with existing between the physical district ID of the adjacent sub-district of current area, also can only temporarily use earlier.

Step 206: with the deletion from alternative physical district ID tabulation of the current alternative physical district ID of choosing, then, execution in step 203.

Step 207: current area is labeled as the dissatisfied principle sub-district of evading, then, execution in step 208.

Step 208: the current alternative physical district ID of choosing is distributed to current area, and current area is deleted from the cell list of physical district ID to be allocated, and with the deletion from alternative physical district ID tabulation of the current alternative physical district ID of choosing; Then, return step 200.

In the above-described embodiments, after execution in step 202, before execution in step 203, preferable, need regularly to create again alternative physical district ID tabulation, this be because, when execution in step 207, per minute is made into physical district ID of merit, just with the deletion from alternative physical district ID tabulation of this physical district ID, after the repeated dispensing, to there be assignable physical district ID in the alternative physical district ID tabulation, for flow process is carried out smoothly, needing regularly tabulates to physical district ID upgrades, and does not repeat them here.

In the embodiment of the invention, a kind of planing method of physical district ID is provided, make the CRS frequency domain side-play amount of base station based on the adjacent sub-district physical district ID correspondence of current area, for current area is distributed physical district ID, like this, just can make the CRS between the neighbor cell on frequency domain position, stagger, thereby avoid between neighbor cell, producing the co-channel interference of CRS, when having improved signal quality, also promoted systematic function effectively.

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, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims (10)

1. the planing method of a Physical Cell Identifier ID is characterized in that, comprising:
Determine the current area of physical district ID to be allocated, and the adjacent sub-district of described current area;
Based on the physical district ID corresponding district DRS (Dedicated Reference Signal) CRS frequency domain side-play amount of described adjacent sub-district, for described current area is distributed physical district ID.
2. the method for claim 1 is characterized in that, based on the CRS frequency domain side-play amount of the physical district ID correspondence of described adjacent sub-district, is that described current area is distributed physical district ID, comprising:
Obtain an alternative physical district ID
With the CRS frequency domain side-play amount of the physical district ID correspondence of each adjacent sub-district, the frequency domain side-play amount corresponding with described alternative physical district ID compares respectively;
According to comparative result, determine the CRS frequency domain side-play amount of the physical district ID correspondence of each adjacent sub-district, when the CRS frequency domain side-play amount corresponding with described alternative physical district ID is all inequality, the alternative physical district ID that obtains is distributed to described current area.
3. the method for claim 1 is characterized in that, based on the CRS frequency domain side-play amount of the physical district ID correspondence of described adjacent sub-district, is that described current area is distributed physical district ID, comprising:
Obtain an alternative physical district ID
With the CRS frequency domain side-play amount of the physical district ID correspondence of each adjacent sub-district, the frequency domain side-play amount corresponding with described alternative physical district ID compares respectively;
According to comparative result, determine the CRS frequency domain side-play amount of the physical district ID correspondence of any one adjacent sub-district, the CRS frequency domain side-play amount corresponding with described alternative physical district ID is identical, and when not having next selectable alternative physical district ID, the alternative physical district ID that obtains is distributed to described current area, and should be labeled as the dissatisfied principle sub-district of evading in current sub-district.
4. as claim 2 or 3 described methods, it is characterized in that, adopt formula Calculate described CRS frequency domain side-play amount, wherein, v ShiftBe CRS frequency domain side-play amount, Be physical district ID, M is a parameter preset.
5. as claim 2 or 3 described methods, it is characterized in that, upgrade alternative physical district ID according to setting cycle.
6. the device for planning of a Physical Cell Identifier ID is characterized in that, comprising:
Determining unit is used for determining the current area of physical district ID to be allocated and the adjacent sub-district of described current area;
Allocation units are used for the CRS frequency domain side-play amount based on the physical district ID correspondence of described adjacent sub-district, for described current area is distributed physical district ID.
7. device as claimed in claim 6, it is characterized in that, described allocation units are based on the CRS frequency domain side-play amount of the physical district ID correspondence of described adjacent sub-district, when distributing physical district ID for described current area, obtain an alternative physical district ID, and respectively with the CRS frequency domain side-play amount of the physical district ID correspondence of each adjacent sub-district, the frequency domain side-play amount corresponding with described alternative physical district ID compares, according to comparative result, determine the CRS frequency domain side-play amount of the physical district ID correspondence of each adjacent sub-district, when the CRS frequency domain side-play amount corresponding with described alternative physical district ID is all inequality, the alternative physical district ID that obtains is distributed to described current area.
8. device as claimed in claim 6, it is characterized in that, described allocation units are based on the CRS frequency domain side-play amount of the physical district ID correspondence of described adjacent sub-district, when distributing physical district ID for described current area, obtain an alternative physical district ID, and respectively with the CRS frequency domain side-play amount of the physical district ID correspondence of each adjacent sub-district, the frequency domain side-play amount corresponding with described alternative physical district ID compares, according to comparative result, determine the CRS frequency domain side-play amount of the physical district ID correspondence of any one adjacent sub-district, the CRS frequency domain side-play amount corresponding with described alternative physical district ID is identical, and when not having next selectable alternative physical district ID, the alternative physical district ID that obtains is distributed to described current area, and should be labeled as the dissatisfied principle sub-district of evading in current sub-district.
9. as claim 7 or 8 described devices, it is characterized in that described allocation units adopt formula Calculate described CRS frequency domain side-play amount, wherein, v ShiftBe CRS frequency domain side-play amount, Be physical district ID, M is a parameter preset.
10. as claim 7 or 8 described devices, it is characterized in that, further comprise:
Updating block is used for upgrading alternative physical district ID according to setting cycle.
CN2010106119942A 2010-12-29 2010-12-29 Method and device for planning physical cell ID (Identification) CN102026205A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102638801A (en) * 2012-03-21 2012-08-15 大唐移动通信设备有限公司 Method and device for planning physical cell in long term evolution (LTE) system
CN103313373A (en) * 2012-03-15 2013-09-18 中兴通讯股份有限公司 Cell-based RS (Remote Sensing) beacon channel power calibrating method, base station and UE (User Equipment)
CN103686742A (en) * 2013-12-25 2014-03-26 广东省电信规划设计院有限公司 PCI (Physical Cell Identifier) planning method and device
WO2014067132A1 (en) * 2012-11-02 2014-05-08 富士通株式会社 Method, apparatus and system for cell search and measurement
CN104956705A (en) * 2012-12-04 2015-09-30 诺基亚通信公司 Algorithm for physical cell identifier allocation
CN106664578A (en) * 2014-08-07 2017-05-10 夏普株式会社 Base station device, terminal device and method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009120137A1 (en) * 2008-03-25 2009-10-01 Telefonaktiebolaget L M Ericsson (Publ) Method for automatically selecting a physical cell identity (pci) of a long term evolution (lte) radio. cell
CN101568196A (en) * 2008-09-26 2009-10-28 华为技术有限公司 Method and device for distributing physical cell identifiers
CN101610101A (en) * 2008-06-16 2009-12-23 中兴通讯股份有限公司 A kind of frequency-hopping method of descending special pilot frequency
CN101778395A (en) * 2010-01-08 2010-07-14 华为技术有限公司 Method and device for planning physical cell identities

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009120137A1 (en) * 2008-03-25 2009-10-01 Telefonaktiebolaget L M Ericsson (Publ) Method for automatically selecting a physical cell identity (pci) of a long term evolution (lte) radio. cell
CN101610101A (en) * 2008-06-16 2009-12-23 中兴通讯股份有限公司 A kind of frequency-hopping method of descending special pilot frequency
CN101568196A (en) * 2008-09-26 2009-10-28 华为技术有限公司 Method and device for distributing physical cell identifiers
CN101778395A (en) * 2010-01-08 2010-07-14 华为技术有限公司 Method and device for planning physical cell identities

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103313373B (en) * 2012-03-15 2016-03-02 中兴通讯股份有限公司 Based on the method for community RS beacon channel nominal power, base station and UE
CN103313373A (en) * 2012-03-15 2013-09-18 中兴通讯股份有限公司 Cell-based RS (Remote Sensing) beacon channel power calibrating method, base station and UE (User Equipment)
CN102638801A (en) * 2012-03-21 2012-08-15 大唐移动通信设备有限公司 Method and device for planning physical cell in long term evolution (LTE) system
WO2014067132A1 (en) * 2012-11-02 2014-05-08 富士通株式会社 Method, apparatus and system for cell search and measurement
CN104641688A (en) * 2012-11-02 2015-05-20 富士通株式会社 Method, apparatus and system for cell search and measurement
CN104956705B (en) * 2012-12-04 2018-09-07 诺基亚通信公司 Algorithm for physical cell identifier distribution
CN104956705A (en) * 2012-12-04 2015-09-30 诺基亚通信公司 Algorithm for physical cell identifier allocation
CN103686742A (en) * 2013-12-25 2014-03-26 广东省电信规划设计院有限公司 PCI (Physical Cell Identifier) planning method and device
CN106664578A (en) * 2014-08-07 2017-05-10 夏普株式会社 Base station device, terminal device and method

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