CN101932078A - Selecting method of multiband TD-SCDMA system block - Google Patents

Selecting method of multiband TD-SCDMA system block Download PDF

Info

Publication number
CN101932078A
CN101932078A CN2009100878528A CN200910087852A CN101932078A CN 101932078 A CN101932078 A CN 101932078A CN 2009100878528 A CN2009100878528 A CN 2009100878528A CN 200910087852 A CN200910087852 A CN 200910087852A CN 101932078 A CN101932078 A CN 101932078A
Authority
CN
China
Prior art keywords
district
sub
interval
incoming level
resident
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2009100878528A
Other languages
Chinese (zh)
Inventor
王亮
陈国宾
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TD Tech Ltd
Original Assignee
TD Tech Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TD Tech Ltd filed Critical TD Tech Ltd
Priority to CN2009100878528A priority Critical patent/CN101932078A/en
Publication of CN101932078A publication Critical patent/CN101932078A/en
Pending legal-status Critical Current

Links

Images

Abstract

The invention discloses a selecting method of a multiband TD-SCDMA system block, which comprises the following steps of: for N blocks with a joint station, a TNH divides (TH1, positive infinity) into N dereferencing areas with set N receiving threshold levels TH1 and TH2, ..., wherein the N blocks with the joint station respectively corresponds to a dereferencing interval, and TH1 is less than TH2 is less than ... and less than YHN; judging whether an UE main pilot frequency reception level is larger than or equal to TH1, defining the dereferencing area of the main pilot frequency reception level if the UE main pilot frequency reception level is larger than or equal to the TH1, otherwise the UE does not linger the N blocks with the joint station. The N blocks are used for lingering the UE with different receiving signal intensities, so that the selecting method prevents the UE from switching among the N blocks back and forth by means of ping-pang, and avoids the problem of lingering and blocking.

Description

A kind of system of selection of multiband TD-SCDMA system block
Technical field
The present invention relates to extended frequency band introducing technology, particularly a kind of system of selection of multiband TD-SCDMA system block in the TD-SCDMA system.
Background technology
For solving the nervous problem of the existing frequency range Radio Resource of TD-SCDMA system, TD-SCDMA introduces extended frequency band.On early stage one-segment cell basis, have two kinds of mode of extensions to be used to introduce extended frequency band:
1, newly-increased cell scenario is called non-sub-district mode altogether again, in this mode, makes up new sub-district in newly-increased frequency range, and with original frequency range sub-district colocation site, original sub-district wireless attributes remains unchanged;
2, newly-increased frequency scheme is called common sub-district mode again, in this mode, the frequency resource that increases frequency range newly is increased in original sub-district, and number of cells does not increase, but original sub-district wireless attributes changes.
Newly-increased frequency scheme in above-mentioned the 2nd may be because the simple traffic carrier that increases can cause system's access performance poor.
In above-mentioned the 1st newly-increased cell scenario, can improve system's access performance by newly-increased sub-district, but may cause the table tennis switching problem in the resident process of UE.Particularly, existing switch decision mode is: UE determines the persistent district of self according to the intensity of received signal on the dominant pilot, when the signal strength signal intensity of the adjacent area that UE receives surpasses default thresholding greater than the difference of the signal strength signal intensity of persistent district, and keep the regular hour, then UE can switch to the adjacent area.In the many sub-districts of colocation site multiband, the coverage of many sub-districts is identical, if continue to use above-mentioned switch decision mode, then table tennis switching back and forth may appear in UE in many minizones of colocation site.
For the table tennis of the UE in the resident process in colocation site sub-district switching problem, solution in the WCDMA system is directly to adopt the floored community notion, provide preferential persistent district, though can solve the table tennis problem like this, but can cause the portable terminal in the overlay area to reside in tree-shaped cell structure (Hierarchical Cell Structure in a large number, HCS) resident congestion problems is caused in the high sub-district of priority.For the WCDMA system, because the frequency number is smaller, resident congestion problems is unimportant in fact, but in the TD-SCDMA system, because the potential resource of frequency range is abundanter, therefore resident congestion problems is more serious, so the solution of WCDMA system can not be applied directly in the TD-SCDMA system.
Summary of the invention
In view of this, the invention provides a kind of system of selection of multiband TD-SCDMA system block, the table tennis switching problem that can avoid UE to occur in many minizones of colocation site, and can further avoid resident congestion problems.
For achieving the above object, the present invention adopts following technical scheme:
A kind of system of selection of multiband TD-SCDMA system block comprises:
For N sub-district of colocation site, utilize N the incoming level thresholding TH that is provided with 1, TH 2..., TH NWith [TH 1,+∞) is divided into N interval, the corresponding separately interval in the N of a colocation site sub-district; Wherein, TH 1＜TH 2＜...＜TH N
Judge that whether UE dominant pilot incoming level is more than or equal to TH 1If,, then determine the interval at described dominant pilot incoming level place, and with the interval corresponding district the determined persistent district as described UE, otherwise described UE does not reside in N the sub-district of colocation site.
Preferably, according to the resident ratio of UE in the described N sub-district, determine the difference Delta between per two adjacent reception level threshold i=TH I+1-TH i
Preferably, determine the resident ratio of UE in N the sub-district according to the carrier number ratio in the described N sub-district.
Preferably, this method further comprises: the access slot interference level according to a described N sub-district is dynamically adjusted described N incoming level thresholding.
Preferably, when the arbitrary sub-district access slot interference level in the described N sub-district increases, adjust the incoming level thresholding of the upper limit in the corresponding interval in described arbitrary sub-district and/or lower limit correspondence, reduce the resident number of UE in described arbitrary sub-district.
Preferably, when N=2,
If only the access slot interference level of first interval respective cell increases, then reduce incoming level thresholding TH 2
If only the access slot interference level of second interval respective cell increases, then increase incoming level thresholding TH 2
If the access slot interference level of two sub-districts all increases, then increase incoming level thresholding TH simultaneously 1And TH 2
Preferably, for a described N sub-district is provided with corresponding HCS rank, the pairing interval in corresponding each sub-district.
As seen from the above technical solution, among the present invention,, utilize N the incoming level thresholding TH1 that is provided with for N sub-district of colocation site, TH2 ..., the THN general [TH1 ,+∞) being divided into N interval, the N of a colocation site sub-district is interval of correspondence separately; Wherein, TH1＜TH2＜...＜THN; Whether judge UE dominant pilot incoming level more than or equal to TH1, if, then determine the interval at dominant pilot incoming level place, and with the interval corresponding district the determined persistent district as UE, otherwise UE does not reside in N the sub-district of colocation site.Use the present invention, N sub-district is used for the UE of resident different received signal intensity, thereby avoids the UE switching of rattling back and forth N minizone.
Description of drawings
Fig. 1 is the overview flow chart of cell selecting method among the present invention.
Embodiment
For making purpose of the present invention, technological means and advantage clearer, the present invention is described in further details below in conjunction with accompanying drawing.
Basic thought of the present invention is: N sub-district is respectively applied for the UE of resident different received signal intensity, thereby avoids the table tennis switching of UE N minizone on the one hand, guarantee on the other hand that UE can not concentrate to reside at the part sub-district, avoid resident congested.
Fig. 1 is the system of selection overview flow chart of multiband TD-SCDMA system block among the present invention.As shown in Figure 1, this method comprises:
Step 101 for N sub-district of colocation site, is utilized N the incoming level thresholding TH that is provided with 1, TH 2..., TH NWith [TH 1,+∞) is divided into N interval, the corresponding separately interval in the N of a colocation site sub-district.
As the mode of extension of the 1st kind of extended frequency band introducing in the background technology, make up newly-increased sub-district in newly-increased frequency range, and with original frequency range sub-district colocation site.After expanding in this way, on same site, may there be the identical a plurality of sub-districts of coverage, be made as N sub-district.For this N sub-district of colocation site, N incoming level thresholding TH is set 1, TH 2..., TH N, and utilize this N incoming level thresholding with [TH 1,+∞) is divided into N interval, and the corresponding separately interval in N sub-district is represented the received signal strength range of the resident UE in this sub-district.Wherein, TH 1＜TH 2＜...＜TH N, and N interval constitutes continuous interval [TH 1,+∞).
Being each sub-district interval corresponding when setting up corresponding relation with it, can adopt variety of way to carry out, as long as can this corresponding relation of mark, for example existing cell ID discriminator and interval be set up corresponding relation etc.
Difference Delta between per two adjacent reception level threshold i=TH I+1-TH iBe defined as resident isolation, be used to control the resident ratio of UE between different districts, thereby avoid too much UE to concentrate on the resident congestion problems that causes in the part sub-district.Therefore, can determine Delta according to the resident proportion requirement of UE in N the sub-district iParticularly, because the carrier number of each sub-district of TD may be incomplete same, therefore, can come reference that the resident ratio of UE in N the sub-district is set, and then Delta rationally is set according to the ratio of carrier number i
Step 102 judges that whether UE dominant pilot incoming level is more than or equal to TH 1If,, then execution in step 103, select resident sub-district in N sub-district, otherwise UE do not reside in N the sub-district of colocation site.
This step determines whether to select persistent district in N sub-district by the judgement to UE dominant pilot incoming level value.
Step 103 is determined the interval at UE dominant pilot incoming level place, and with the interval corresponding district the determined persistent district as this UE.
In this step, according to the interval of N in the step 101 persistent district correspondence, for UE selects this pairing sub-district of received signal intensity, as persistent district.
So far, the cell selecting method flow process in the multiband TD-SCDMA system finishes.In above-mentioned flow process, can further dynamically adjust N incoming level thresholding, thereby adjust the resident number of users in N the sub-district according to the access slot interference level of N sub-district.Particularly, when determining the upper and lower bound threshold level level of the corresponding interval in a certain sub-district, the access slot interference level of this sub-district is a particular value, corresponding a kind of open ended resident number of users; But along with the variation of characteristics of radio channels or other users' access, leave, the access slot interference level of this sub-district may change, when the access slot interference level increases, if it is identical with the resident number of users of holding before, then not too suitable, need suitably to reduce the resident number of users of holding, these users are adjusted to other sub-districts, to guarantee the receptivity of resident user in the sub-district.
Two sub-districts with colocation site are example below, and the specific implementation of cell selecting method of the present invention is described.
Suppose that there are two sub-districts in the colocation site multiband in the TD-SCDMA system, be designated sub-district A and sub-district B.In this example, utilize the HCS rank of sub-district to characterize the corresponding interval in each sub-district with the corresponding relation of interval.
Particularly, the HCS rank that sub-district A is set is 0, and the HCS rank of sub-district B is 1;
Two incoming level thresholdings are set are respectively TH 1And TH 2, wherein, TH 1＜TH 2, TH 2-TH 1=Delta is defined as resident isolation, is used to control two resident ratios of minizone UE;
Utilize two incoming level thresholdings with [TH 1,+∞) is divided into two intervals, and wherein, boundary value can be positioned at arbitrary interval, and promptly two intervals can be [TH 1, TH 2] and (TH 2,+∞), perhaps, two intervals can also be [TH 1, TH 2) and [TH 2,+∞); With two intervals is [TH 1, TH 2) and [TH 2,+∞) is the following processing of example explanation;
Make that the HCS rank is that the interval of 0 sub-district A correspondence is [TH 1, TH 2), make that the HCS rank is that the interval of 1 sub-district B correspondence is [TH 2,+∞);
When arbitrary UE carries out the cell selecting process, at first determine the dominant pilot incoming level X of this UE, then, determine persistent district according to the relation between dominant pilot incoming level X and two incoming level thresholdings: when the dominant pilot incoming level X of UE satisfied X＜THA, this UE can not reside in sub-district A or sub-district B; When the dominant pilot incoming level X of this UE satisfies TH 1≤ X＜TH 2The time, this UE can reside in sub-district A; When the dominant pilot incoming level X of this UE satisfies X 〉=TH 2The time, this UE can reside in sub-district B.
All UE in the colocation site cell coverage area all can utilize aforesaid way to carry out the selection of persistent district.Wherein, all UE can be controlled by Delta in the resident ratio of two sub-districts, and network side can dynamically be adjusted THA and THB parameter, to reach the optimization of network performance according to two sub-district access slot interference levels.
For example: when two resident probability of sub-district UE reduce, can suitably reduce THA and THB synchronously;
When the access slot interference level of sub-district A increases, can suitably reduce THB;
When the access slot interference level of sub-district B increases, can suitably improve THB;
If when the access slot interference level of sub-district A and B increases, can improve THA and THB synchronously.
So far, the cell selecting method flow process in this example finishes.In this example, the function of HCS is expanded, be used to identify many minizones of colocation site multiband, resident user's receiving level strength.
For the situation more than the colocation site multiband of two sub-districts, above-mentioned cell selecting method is suitable equally.Specific implementation by the invention described above as seen, among the present invention, with many sub-districts of colocation site multiband resident user distinguish, thereby avoid the table tennis switching problem of the resident process of UE in the cell environment of colocation site multiband.
Being preferred embodiment of the present invention only below, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (7)

1. the system of selection of a multiband TD-SCDMA system block is characterized in that, this method comprises:
For N sub-district of colocation site, utilize N the incoming level thresholding TH that is provided with 1, TH 2..., TH NWith [TH 1,+∞) is divided into N interval, the corresponding separately interval in the N of a colocation site sub-district; Wherein, TH 1＜TH 2＜...＜TH N
Judge that whether UE dominant pilot incoming level is more than or equal to TH 1If,, then determine the interval at described dominant pilot incoming level place, and with the interval corresponding district the determined persistent district as described UE, otherwise described UE does not reside in N the sub-district of colocation site.
2. method according to claim 1 is characterized in that, according to the resident ratio of UE in the described N sub-district, determines the difference Delta between per two adjacent reception level threshold i=TH I+1-TH i
3. method according to claim 2 is characterized in that, determines the resident ratio of UE in N the sub-district according to the carrier number ratio in the described N sub-district.
4. according to arbitrary described method in the claim 1 to 3, it is characterized in that this method further comprises: the access slot interference level according to a described N sub-district is dynamically adjusted described N incoming level thresholding.
5. method according to claim 4, it is characterized in that, when the arbitrary sub-district access slot interference level in the described N sub-district increases, adjust the incoming level thresholding of the upper limit in the corresponding interval in described arbitrary sub-district and/or lower limit correspondence, reduce the resident number of UE in described arbitrary sub-district.
6. method according to claim 5 is characterized in that, when N=2,
If only the access slot interference level of first interval respective cell increases, then reduce incoming level thresholding TH 2
If only the access slot interference level of second interval respective cell increases, then increase incoming level thresholding TH 2
If the access slot interference level of two sub-districts all increases, then increase incoming level thresholding TH simultaneously 1And TH 2
7. according to arbitrary described method in the claim 1 to 3, it is characterized in that, for a described N sub-district is provided with corresponding HCS rank, the pairing interval in corresponding each sub-district.
CN2009100878528A 2009-06-24 2009-06-24 Selecting method of multiband TD-SCDMA system block Pending CN101932078A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009100878528A CN101932078A (en) 2009-06-24 2009-06-24 Selecting method of multiband TD-SCDMA system block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009100878528A CN101932078A (en) 2009-06-24 2009-06-24 Selecting method of multiband TD-SCDMA system block

Publications (1)

Publication Number Publication Date
CN101932078A true CN101932078A (en) 2010-12-29

Family

ID=43370911

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009100878528A Pending CN101932078A (en) 2009-06-24 2009-06-24 Selecting method of multiband TD-SCDMA system block

Country Status (1)

Country Link
CN (1) CN101932078A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1512695A (en) * 2002-12-26 2004-07-14 华为技术有限公司 Multiple frequency band subzone selecting system and method
CN1518367A (en) * 2003-01-14 2004-08-04 华为技术有限公司 Multi-band small range selection method
WO2008001452A1 (en) * 2006-06-29 2008-01-03 Fujitsu Limited Cell selection method, mobile station apparatus, and mobile communication system in hierarchical cell structure

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1512695A (en) * 2002-12-26 2004-07-14 华为技术有限公司 Multiple frequency band subzone selecting system and method
CN1518367A (en) * 2003-01-14 2004-08-04 华为技术有限公司 Multi-band small range selection method
WO2008001452A1 (en) * 2006-06-29 2008-01-03 Fujitsu Limited Cell selection method, mobile station apparatus, and mobile communication system in hierarchical cell structure

Similar Documents

Publication Publication Date Title
CN103874072B (en) Communication Jamming processing method and wireless router
US7864727B2 (en) Congestion control method for wireless communication system and base station control apparatus
US10064065B2 (en) Downlink direction remote radio unit selection decision method and apparatus
CN100399858C (en) Selecting method of switching target community in TDD/CDMA system
CN1735258A (en) Multi-carrier frequency cell major and minor carrier frequency adjusting method in TD-SCDMA system
CN102695229B (en) Method and device for realizing service base station switch in WiMAX (Worldwide Interoperability for Microwave Access) network
CN109803302B (en) Method, apparatus and computer readable storage medium for determining coverage enhancement level
KR101708580B1 (en) Device and method for configuring almost blank subframe and heterogeneous wireless communication network
CN102843695A (en) Method and device for allocating CRS (Cell Reference Signal)
CN103874147A (en) Cell selection method and cell selection system for improving success rate of services of wireless communication system
CN103222300A (en) Multi-RAT-measurement reporting
CN104821852B (en) A kind of frequency spectrum sensing method based on multiple antennas instantaneous power
CN105682156A (en) Load-based Gaussian distribution adaptive LTE (Long Term Evolution) cell switching method
CN100536360C (en) A multi-cell joint detection method of the broadcast channel in the time-division duplex system
CN102378286A (en) Frequency spectrum switching method and system for centralized networks, user terminal and base station
CN103209472A (en) Method and system for cooperative scheduling of inter-cell uplink interference coordination
CN102098787B (en) Channel sharing user selection and regulation methods and devices
CN103067959B (en) Measure method and the user terminal of adjacent area
EP3163963B1 (en) Method for improving network performance, user equipment and storage medium
CN101835217B (en) Cell selection method and device in reselected cells determined by multiple reselection modes
CN104581853A (en) Adaptive modulation method for wireless router
CN101730165A (en) Switching method of N-frequency point co-frequency network
CN101932078A (en) Selecting method of multiband TD-SCDMA system block
CN105636126B (en) A kind of switch determining method and device
CN101902749A (en) Method and system for soft frequency reuse

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C53 Correction of patent of invention or patent application
CB03 Change of inventor or designer information

Inventor after: Wang Liang

Inventor after: Chen Guobin

Inventor before: Wang Liang

Inventor before: Chen Guobin

C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20101229