CN102572950B - Residence reselecting, device and system - Google Patents
Residence reselecting, device and system Download PDFInfo
- Publication number
- CN102572950B CN102572950B CN201010613996.5A CN201010613996A CN102572950B CN 102572950 B CN102572950 B CN 102572950B CN 201010613996 A CN201010613996 A CN 201010613996A CN 102572950 B CN102572950 B CN 102572950B
- Authority
- CN
- China
- Prior art keywords
- cell
- load
- network
- target cell
- information
- 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.)
- Active
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a kind of residence reselecting, device and system, wherein, the method comprises: terminal resides in first network, obtains the information on load of multiple Target cells of second network; For each Target cell, determine the calculating signal level intensity of Target cell according to the information on load of Target cell; The calculating signal level intensity of the calculating signal level intensity of each Target cell and the current service cell of terminal is compared, the Target cell meeting predetermined condition is defined as the Serving cell of terminal, wherein, predetermined condition refers to: the calculating signal level intensity of this Target cell is greater than the calculating signal level intensity of current service cell.In the reuse adoption process of community of the present invention, the load condition of each network system can be considered, by terminal gravity treatment to the lower community of network load, can load between equalizing network, improve the service efficiency of Internet resources.
Description
Technical field
The present invention relates to the communications field, particularly relate to a kind of residence reselecting, device and system.
Background technology
Subscriber equipment (UseEquipment, referred to as UE) at the idling mode, need the signal quality of monitoring current area and adjacent area at any time, service is provided to select a best community, Here it is cell reselection, if what select is the community of another one system, be then called intersystem cell reselection.
At present, when bimodulus (such as TD-SCDMA and GSM) UE starts shooting, TD SDMA (TimeDivision-SynchronousCodeDivisionMultipleAccess can be accessed by prioritizing selection, referred to as TD-SCDMA) system (i.e. 3G network), when the threshold value that the 3G network signal quality at UE place and intensity can not reach network settings requires, 3G network can be carried out to global system for mobile communications (GlobalSystemforMobileCommunications according to the signal quality of community and signal strength signal intensity, referred to as GSM) cell reselection of (i.e. 2G network), when UE leave 2G network coverage area get back to the 3G network area of coverage time, the cell reselection of 2G network to 3G network can be carried out according to the signal quality of community and signal strength signal intensity, keep the continuity of the network coverage.
The main trigger condition of intersystem cell reselection is different system adjacent cell (1) signal strength signal intensity or (2) signal quality, and the gravity treatment of intersystem cell can not consider the load condition of each network system, owing to there are differences between different network systems, therefore, the signal quality of a frequent appearance system is better, terminal quantity under it is more, and the negligible amounts of terminal under other system, occur that system loading is unbalanced, be unfavorable for that the overall use of Internet resources is optimized, and the treatment effeciency of the system under high load capacity also can reduce, be unfavorable for the communication quality of terminal.
Gravity treatment for intersystem cell in correlation technique can not be considered the load of each network system and cause the problem that system loading is uneven, affect user's proper communication, not yet proposes effective solution at present.
Summary of the invention
Gravity treatment for intersystem cell in correlation technique can not be considered the load of each network system and is unfavorable for that network load is balanced and may affects the problem of user's proper communication quality, the present invention proposes a kind of residence reselecting, device and system, internetwork load balancing can be promoted, improve the overall service efficiency of Internet resources.
Technical scheme of the present invention is achieved in that
A kind of residence reselecting, terminal resides in first network, comprising:
Obtain the information on load of multiple Target cells of second network;
For each Target cell, determine the calculating signal level intensity of described Target cell according to the information on load of described Target cell;
The calculating signal level intensity of the calculating signal level intensity of each Target cell and the current service cell of described terminal is compared, the Target cell meeting predetermined condition is defined as the Serving cell of described terminal, wherein, described predetermined condition refers to: the calculating signal level intensity of this Target cell is greater than the calculating signal level intensity of described current service cell.
Wherein, following formula is utilized to determine the calculating signal level intensity R of Target cell
n:
R
n=Q
meas, n-(Q
offsets, n+ add), wherein, Q
meas, nthe signal level intensity level of the Target cell that described terminal records, Q
offsets, nbe the cell reselection bias of Target cell, add is the information on load of Target cell.
Wherein, the Target cell quantity meeting described predetermined condition is multiple, then the process that the Target cell meeting predetermined condition is defined as the Serving cell of described terminal comprised:
By meet described predetermined condition multiple Target cells in R
nmaximum community is defined as the Serving cell of described terminal.
Preferably, described pre-conditioned also comprise one of following: Rxlex > Q
rxlevmin; Rxlex > Q
rxlevminand Rxlex > Q
rxlevminduration be more than or equal to Treselections;
Wherein, Rxlex is the signal level intensity level of Target cell, Q
rxlevminbe preset the minimum access level intensity threshold value arranged, Treselections is cell reselection triggered time threshold value.
Wherein, the process obtaining the information on load of multiple Target cells of second network comprises:
Described first network obtains the information on load of multiple Target cells of described second network by preset interface, wherein, described preset interface is arranged between described first network and described second network.
Preferably, described first network is one in TDS-CDMA system, broadband CDMA system or global system for mobile communications, and described second network is another in TDS-CDMA system, broadband CDMA system or global system for mobile communications.
Wherein, the process of the information on load of multiple Target cells of described first network acquisition second network comprises:
Described first network obtains the information on load of multiple Target cells of described second network by the Iub-g interface preset, and wherein, described Iub-g interface is arranged between radio network controller and base station controller.
A kind of cell reselection device, in the current resident first network of terminal, described cell reselection device is arranged in described terminal or described first network, and described cell reselection device comprises:
Acquisition module, for obtaining the information on load of multiple Target cells of second network;
Determination module, for for each Target cell, determines the calculating signal level intensity of described Target cell according to the information on load of described Target cell;
Comparison module, for the calculating signal level intensity of the calculating signal level intensity of each Target cell and described current service cell is compared, the Target cell meeting predetermined condition is defined as the Serving cell of described terminal, wherein, described predetermined condition refers to: the calculating signal level intensity of this Target cell is greater than the calculating signal level intensity of described current service cell.
Wherein, described determination module utilizes following formula to determine the calculating signal level intensity R of Target cell
n:
R
n=Q
meas, n-(Q
offsets, n+ add), wherein, Q
meas, nthe signal level intensity level of the Target cell that described terminal records, Q
offsets, nbe the cell reselection bias of Target cell, add is the information on load of Target cell.
Wherein, described comparison module is specifically for being multiple in the Target cell quantity meeting described predetermined condition, by meet described predetermined condition multiple Target cells in R
nmaximum community is defined as the Serving cell of described terminal.
Preferably, described pre-conditioned also comprise one of following: Rxlex > Q
rxlevmin; Rxlex > Q
rxlevminand Rxlex > Q
rxlevminduration be more than or equal to Treselections;
Wherein, Rxlex is the signal level intensity level of Target cell, Q
rxlevminbe preset the minimum access level intensity threshold value arranged, Treselections is cell reselection triggered time threshold value.
A kind of cell reselection system, comprise first network and second network, terminal resides in first network, wherein, described cell reselection system comprises cell reselection device, and described cell reselection device is arranged in described terminal or described first network, described first network comprises the first information on load processing unit, described second network comprises the second information on load processing unit, wherein
Described second information on load processing unit, when measuring between different system for starting in described terminal, obtains the information on load of multiple Target cell, and described information on load is sent to described first information on load processing unit;
Described first information on load processing unit, for receiving the information on load from described second information on load processing unit, and sends to described cell reselection device by described information on load;
Described cell reselection device, for obtaining the information on load of the multiple Target cells from described first information on load processing unit; For each Target cell, determine the calculating signal level intensity of described Target cell according to the information on load of described Target cell; The calculating signal level intensity of the calculating signal level intensity of each Target cell and described current service cell is compared, the Target cell meeting predetermined condition is defined as the Serving cell of described terminal, wherein, described predetermined condition refers to: the calculating signal level intensity of this Target cell is greater than the calculating signal level intensity of described current service cell.
Wherein, described first information on load processing unit obtains the information on load of multiple Target cells of described second information on load processing unit by preset interface, wherein, described preset interface is arranged between described first network and described second network.
Preferably, described first network is one in TDS-CDMA system, broadband CDMA system or global system for mobile communications, and described second network is another in TDS-CDMA system, broadband CDMA system or global system for mobile communications.
Wherein, described preset interface is arranged between radio network controller and base station controller.
By means of technique scheme of the present invention, by determining the calculating signal level intensity R of target adjacent section in conjunction with the load condition of network
nmake the reuse adoption process of community can consider the load condition of each network system, by terminal gravity treatment to the lower community of network load, solve in prior art and be unfavorable for network load equilibrium and the problem that may affect user's proper communication quality, the load balancing of network can be promoted, improve the overall service efficiency of Internet resources.
Accompanying drawing explanation
Fig. 1 is the flow chart of the residence reselecting according to the embodiment of the present invention;
Fig. 2 is the exemplary plot of the preset interface according to the embodiment of the present invention;
Fig. 3 is the detailed process figure of the residence reselecting according to the embodiment of the present invention;
Fig. 4 is the structured flowchart of the cell reselection device according to the embodiment of the present invention;
Fig. 5 is the structured flowchart of the cell reselection system according to the embodiment of the present invention.
Embodiment
In the cell reselection scheme of prior art, all load sharing and cell reselection technique are not combined analysis, or be exactly only cell reselection technique is innovated, reduce time delay; Be exactly to realize load sharing, approach is that message related to calls controls, system message coupling, locking particular terminal, increase functional hardware etc., and the message transmission between RNC and BSC can not directly be communicated with, and needs through core net.Do like this and the network element of existing network is changed comparatively greatly, and the increase of signaling consumption can be caused.
Fig. 1 is the flow chart of the residence reselecting according to the embodiment of the present invention, and now terminal resides in first network, and starts to carry out intersystem cell measurement, and as shown in Figure 1, the method comprises the following steps:
Step S101, obtains the information on load of multiple Target cells of second network;
Step S103, for each Target cell, determines the calculating signal level intensity (R of Target cell according to the information on load of Target cell
n);
Step S105, by the R of each Target cell
nwith the calculating signal level intensity (R of the current service cell of terminal
s) compare, the Target cell meeting predetermined condition is defined as the target serving district of terminal, and terminal is reselected to this Target cell, wherein, predetermined condition can be one of following: the R of this Target cell
nbe greater than the R of current service cell
s; The R of this Target cell
nbe greater than the R of current service cell
sand meet Rxlex > Q
rxlevminduration be more than or equal to Treselections; The R of this Target cell
nbe greater than the R of current service cell
sand meet Rxlex > Q
rxlevmin; Wherein, Rxlex is the signal level intensity level of Target cell, Q
rxlevminbe preset the minimum access level intensity threshold value arranged, Treselections is cell reselection triggered time threshold value.
In above process, the information on load of multiple Target cells of second network can be obtained by first network; For each Target cell, first network determines the calculating signal level intensity (R of Target cell according to the information on load of Target cell
n); Afterwards, first network is by the R of each Target cell
nwith the calculating signal level intensity (R of the current service cell of terminal
s) compare, the Target cell meeting predetermined condition is defined as the target serving district of terminal, and terminal is reselected to this Target cell, wherein, predetermined condition can be one of following: the R of this Target cell
nbe greater than the R of current service cell
s; The R of this Target cell
nbe greater than the R of current service cell
sand meet Rxlex > Q
rxlevminduration be more than or equal to Treselections; The R of this Target cell
nbe greater than the R of current service cell
sand meet Rxlex > Q
rxlevmin; Wherein, Rxlex is the signal level intensity level of Target cell, Q
rxlevminbe preset the minimum access level intensity threshold value arranged, Treselections is cell reselection triggered time threshold value.
In above process, the information on load of multiple Target cells of second network can be obtained by first network, and this information on load is sent to terminal; For each Target cell, terminal determines the calculating signal level intensity (R of Target cell according to the information on load of Target cell
n); Afterwards, terminal is by the R of each Target cell
nwith the calculating signal level intensity (R of the current service cell of terminal
s) compare, the Target cell meeting predetermined condition is defined as the target serving district of terminal, and terminal is reselected to this Target cell, wherein, predetermined condition can be one of following: the R of this Target cell
nbe greater than the R of current service cell
s; The R of this Target cell
nbe greater than the R of current service cell
sand meet Rxlex > Q
rxlevminduration be more than or equal to Treselections; The R of this Target cell
nbe greater than the R of current service cell
sand meet Rxlex > Q
rxlevmin; Wherein, Rxlex is the signal level intensity level of Target cell, Q
rxlevminbe preset the minimum access level intensity threshold value arranged, Treselections is cell reselection triggered time threshold value.
By means of above-mentioned process, the present invention determines R by the load condition in conjunction with network
nmake the reuse adoption process of community can consider the load condition of network system, by terminal gravity treatment to the lower adjacent cell of network load, solve in prior art and be unfavorable for network load equilibrium and the problem that may affect user's proper communication quality, internetwork load balancing can be promoted, improve the overall service efficiency of Internet resources.
In step s 103, the R of following formula determination adjacent cell can be utilized
n:
R
n=Q
meas, n-(Q
offsets, n+ add), wherein, Q
meas, nthe adjacent cell signal level intensity level that UE records, Q
offsets, nbe the cell reselection bias of adjacent cell, add is the information on load of adjacent cell.
In step S105, if the adjacent cell quantity meeting predetermined condition is multiple, then can by meet predetermined condition multiple adjacent cells in R
nmaximum community is defined as the Serving cell of terminal.
Wherein, first network can obtain the information on load of multiple adjacent cells of second network by preset interface, wherein, preset interface is arranged between first network and second network.Such as, if first network is one in TDS-CDMA system, broadband CDMA system or global system for mobile communications, second network is another in TDS-CDMA system, broadband CDMA system or global system for mobile communications, now, preset interface can be arranged between radio network controller and base station controller, the interface be arranged between radio network controller and base station controller is called Iub-g interface below.
Fig. 2 is the exemplary plot of the Iub-g interface be arranged between radio network controller and base station controller, as shown in Figure 2, Iur-g interface is for connecting TD-SCDMA system (or WCDMA system) and gsm system, particularly, this interface, for connecting RNC and BSC, makes RNC with BSC directly be connected, and decreases the signaling consumption by core net, be convenient to RRM, the signaling instruction greatly shortened between TD-SCDMA system and gsm system is mutual.Experiment shows, the Successful utilization of Iur-g interface, and the switching between GSM and TD-SCDMA system and reselection success rate are improved greatly.Inter-system hard handoff success rate can rise to 99.60% from 98.35%, and wherein deep fade scene handover success rate rises to 99.78% from 97.74%, and High-speed Circumstance handover success rate rises to 99.47% from 98.26%.The large good fortune of time delay of the switching between system reduces, and shorten in average 340ms, time delay shortens more than 34%.
By increasing Iur-g interface, the information interaction between RNC and BSC does not need to be forwarded by core net, makes the information interaction between RNC and BSC become simple, saves Internet resources, reduces signaling consumption.And dynamically adjust cell reselection parameters according to the load message of Iur-g interface, be easy to realize, and specific aim is higher.
The present invention is described in detail for the S criterion of 3G and 2G network reselection technology and R criterion.
According to " the S criterion " of cell reselection, when Srxlev < SsearchRAT meets, the measurement of different system adjacent cell will be started, wherein, Srxlev is P-CCPCH (Primary Common Control Physical Channel) received signal code power (ReceivedSignalCodePower of TD-SCDMA community, referred to as RSCP) measured value deducts minimum access level intensity thresholding and power back-off, and SsearchRAT is the threshold value carrying out measuring between system.Then, system carries out the gravity treatment of community according to " R criterion ".
In " R criterion ", Q
meas, sthe Serving cell P-CCPCHRSCP value that UE records, Q
meas, nthe adjacent cell received signal level value that UE records, Q
offsetthe gravity treatment bias of community, Q
hystit is the hysteresis in order to prevent cell reselection " ping-pong ".Meeting under measurement strategies prerequisite, if satisfy condition R
n> R
s, then trigger cell reselection, otherwise otherwise.Generally speaking, regardless of the cell reselection between any two or several system, as long as the calculating signal level intensity meeting adjacent cell is greater than the calculating signal level intensity of Serving cell, formation UE is carried out the essential condition of cell reselection.Q
offsets, nfor the independent gravity treatment priority controlling each adjacent cell, this value directly affects R
nthe size of value, to Q
offsets, nthe increase of value or minimizing, may change R instantaneously
nand R
smagnitude relationship, thus determine reselection strategies, conclusive effect is played to the load sharing of network.
Below in conjunction with Fig. 3, the present invention is described in detail, supposes that UE is current and reside in TD-SCDMA network.
Step S301, UE reside in the community under TD-SCDMA network.
Step S302, if Srxlev < is SsearchRAT, measures between UE open system.
Step S303, the Rs of the Serving cell of UE is obtained (because UE now resides in TD-SCDMA network according to R criterion (PCCPCHRSCP), so this Serving cell is the community under TD-SCDMA network), and the Rn of multiple adjacent cells of UE (Target cell namely mentioned above) is (because UE will carry out the cell reselection between system, so adjacent cell is the community under GSM network), wherein:
R
s＝Q
meas，s+Q
hyst，s
R
n＝Q
meas，n-Q
offset，n
Step S304, RNC obtain the information on load from each adjacent cell of BSC by Iur-g interface, and this information on load is sent to terminal, and terminal is according to the Q of this information on load to each adjacent cell
offsetvalue is modified.
Particularly, in this step, BSC has added up the information on load of each community in this BSC, and (BSC can by the information on load of the method statistic community of prior art, concrete statistical method repeats no more here), when there being certain UE to move to certain base station cell (such as community 1) edge, RNC sends the load request message (CellResourceSituationRequest) of the GSM adjacent cell of community 1 to BSC by Iur-g interface, the quantity of the GSM adjacent cell of such as community 1 is 6, the then information on load of these 6 communities of RNC acquisition request (these 6 communities are adjacent cell mentioned above), BSC, by Iur-g interface, returns the information on load of these 6 communities to RNC, after RNC receives the information on load of these 6 communities, can carry out calculating according to the load condition of these 6 communities to queue up, draw the load level of each community in these 6 communities, the load value of community is larger, the load level of Ze Gai community is higher, by the information on load of 6 adjacent cells according to ascending order, determine the load level of these 6 adjacent cells: L1, L2, L3, L4, L5, L6.
RNC calculates through load level, can to the adjacent cell bias Q in cell reselection parameters
offsets, non-the-fly modify.Particularly, RNC according to obtain cell load information, after generating table of grading, to cell reselection parameters value Q
offsetmodify, such as, the Q that can specify in original agreement
offseton numerical value basis, add the added value (add) that community grade is corresponding, following table 1 is the corresponding lists of community grade and added value:
Table 1
| Grade | L1 | L2 | L3 | L4 | L5 | L6 |
| Added value (add) | 1dB | 2dB | 3dB | 5dB | 7dB | 9dB |
As can be seen from Table 1, in the load level of L1, L2, L3, because load variations amplitude is less, therefore often increase a load level, the value corresponding increase 1dB of add, from L4, in L5, L6 load level, when the load of community is more born serious, answer appropriate change Q
offsetthe amendment strategy of value, namely often increases a grade, add corresponding increase 2dB.Owing to relatively increasing Q
offsets, nvalue, result in R
nvalue there occurs change.
Like this, current service cell R
sthe size of value does not change, but target adjacent section R
nthe size of value there occurs change:
R
s＝Q
meas，s+Qhysts
R
n＝Q
meas，n-(Q
offsets，n+add)
By the Q specified in original agreement
offseton numerical value basis, add the added value add that community grade is corresponding, by the adjacent cell of preferential for terminal gravity treatment to underload, the object of load sharing between network can be realized.
In this step, also can not generate table of grading according to cell load information, determine that added value (add) corresponding to community grade is seen, also directly can obtain R according to information on load
n, that is, add can represent added value, also can represent information on load.Obtaining added value according to information on load is only the preferred embodiment of the present invention.
Step S305, whether terminal judges adjacent cell meets R
n> R
sand Rxlex > Q
rxlevminduration be more than or equal to Treselections, wherein, Rxlex is the signal level intensity level of adjacent cell, Q
rxlevminbe preset the minimum access level intensity threshold value arranged, Treselections is cell reselection triggered time threshold value, if meet this condition, then performs step S306, otherwise performs step S307.
Step S306, UE is reselected to the adjacent cell meeting above-mentioned condition by first network, such as, if there are 3 communities (community 2, community 3 and community 4) to meet above-mentioned condition in 6 adjacent cells, then UE can be reselected to any one community in community 2, community 3, community 4; Preferably, UE can be reselected to R in community 2, community 3, community 4
nbe worth maximum community, suppose the R of community 2, community 3, small area, community 43
nbe worth maximum, then UE can be reselected to community 3.At this moment, UE accesses GSM network.
Step S307, UE reside in current service cell, and at this moment, UE still accesses TD-SCDMA network.
It should be noted that; in the present invention; only carry out the explanation of cell reselection criterion from TD-SCDMA network gravity treatment to GSM network for UE; but be not limited to this; for the gravity treatment of UE in the networks such as such as GSM, TD-SCDMA, WCDMA (broadband CDMA system) between any two networks; all can be applicable to method provided by the present invention, and within protection scope of the present invention.Such as: UE also follows R criterion and computing formula thereof from WCDMA network reselection to the reselection criterion of GSM network, difference is wherein R
sq in computing formula
meas, sit is WCDMA community CPICH (Common Pilot Channel) the RSCP value that UE records; UE from GSM network gravity treatment to the reselection criterion of TD-SCDMA network be TD-SCDMAPCCPCHRSCP-TD-SCDMA_offsets, n > GSMRLA_C, namely the calculating signal level intensity of TD-SCDMA community is greater than the received signal level intensity of GSM community; UE is WCDMACPICHRSCP-WCDMA_Qoffset > GSMRLA_C from GSM network gravity treatment to the reselection criterion of WCDMA network, and namely the calculating signal level intensity of WCDMA community is greater than the received signal level intensity of GSM community.
In embodiments of the present invention, load message is obtained by Iur-g interface, judge which cell load is vacant, which cell load is full, and do not need to carry out issuing and resolving of extensive cell broadcast information, a large amount of base station signaling consumptions can be reduced, save the information interaction time of RNC and BSC, significantly improve response speed, equally the effect of casting a brick to attract jade also is played to the power conservation techniques research of terminal; Further, RNC is to adjacent cell gravity treatment bias Q
offsets, nmodify.RNC is when obtaining each adjacent cell information on load of GSM, on-the-fly modifies bias, can the requirement of As soon as possible Promising Policy load sharing, reduces the unbalanced situation of internetwork load sharing.In addition, in the present invention, RNC obtains the information on load of each community of GSM by Iur-g interface, carries out grade queuing, the cell reselection parameters of dynamic conditioning RNC, i.e. adjacent cell bias Q to the cell load information received
offsets, n, amending method specifies numerically in former agreement, adds added value add, thus make the preferential gravity treatment of terminal to the adjacent cell of underload.
Fig. 4 is the structured flowchart of the cell reselection device according to the embodiment of the present invention, and in the current resident first network of terminal, this cell reselection device can be arranged in terminal or first network, and as shown in Figure 4, this device can comprise:
Acquisition module 1, for obtaining the information on load of multiple Target cells of second network;
Determination module 2, for for each Target cell, determines the R of Target cell according to the information on load of Target cell
n;
Comparison module 3, for the R by each Target cell
nwith the R of current service cell
scompare, the Target cell meeting predetermined condition is defined as the Serving cell of terminal, wherein, predetermined condition is one of following: the R of this Target cell
nbe greater than the R of current service cell
s; The R of this Target cell
nbe greater than the R of current service cell
sand meet Rxlex > Q
rxlevminduration be more than or equal to Treselections; The R of this Target cell
nbe greater than the R of current service cell
sand meet Rxlex > Q
rxlevmin; Wherein, Rxlex is the signal level intensity level of Target cell, Q
rxlevminbe preset the minimum access level intensity threshold value arranged, Treselections is cell reselection triggered time threshold value.
Specifically, determination module 2 can utilize following formula to determine the R of Target cell
n:
R
n=Q
meas, n-(Q
offsets, n+ add), wherein, Q
meas, nthe signal level intensity level recorded of Target cell, Q
offsets, nbe the cell reselection bias of Target cell, add is the information on load of Target cell.
Wherein, comparison module 3 specifically may be used for when the Target cell quantity meeting predetermined condition is multiple, by meet predetermined condition multiple Target cells in R
nmaximum community is defined as the Serving cell of terminal.
Fig. 5 is the structured flowchart of the cell reselection system according to the embodiment of the present invention, as shown in Figure 5, first network and second network, terminal resides in first network, this cell reselection system comprises cell reselection device (the cell reselection device namely shown in Fig. 4), cell reselection device is arranged on (the present invention is arranged in first network for cell reselection device) in terminal or first network, first network comprises the first information on load processing unit, second network comprises the second information on load processing unit, wherein
Second information on load processing unit, when measuring between different system for starting in terminal, obtains the information on load of multiple Target cell, and information on load is sent to the first information on load processing unit;
First information on load processing unit, for receiving the information on load from the second information on load processing unit, and sends to cell reselection device by information on load;
Cell reselection device, for obtaining the information on load of the multiple Target cells from the first information on load processing unit; For each Target cell, determine the calculating signal level intensity of Target cell according to the information on load of Target cell; The calculating signal level intensity of the calculating signal level intensity of each Target cell and current service cell is compared, the Target cell meeting predetermined condition is defined as the Serving cell of terminal, wherein, predetermined condition refers to: the calculating signal level intensity of this Target cell is greater than the calculating signal level intensity of current service cell.
Wherein, the first information on load processing unit obtains the information on load of multiple Target cells of the second information on load processing unit by preset interface, wherein, preset interface is arranged between first network and second network.
Preferably, if first network is one in TDS-CDMA system, broadband CDMA system or global system for mobile communications, second network is another in TDS-CDMA system, broadband CDMA system or global system for mobile communications, then preset interface is arranged on (as shown in Figure 2) between radio network controller and base station controller.
In embody rule, above-mentioned cell reselection system can user terminal start measure between different system time, by above-mentioned cell reselection device with to obtain between information on load processing unit mutual, obtain the information on load of multiple Target cell in another network, thus be the Target cell of user terminal selecting underload.
Generally, internetwork load is unbalanced, be unfavorable for efficient utilization and the investment return of common carrier Internet resources, and the proper communication quality of user may be affected, be therefore necessary the load balancing promoting GSM and TD-SCDMA network by technological means.The present invention can reduce GSM and the unbalanced situation of TD-SCDMA network load, terminal use can be moved toward the different system cell that load is on the low side, be conducive to the load sharing between system.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. an intersystem cell reselection method, terminal resides in first network, it is characterized in that, comprising:
Obtain the information on load of multiple Target cells of the second network of disparate systems;
For each Target cell, determine the calculating signal level intensity of described Target cell according to the information on load of described Target cell;
The calculating signal level intensity of the calculating signal level intensity of each Target cell and the current service cell of described terminal is compared, the Target cell meeting predetermined condition is defined as the Serving cell of described terminal, wherein, described predetermined condition refers to: the calculating signal level intensity of this Target cell is greater than the calculating signal level intensity of described current service cell;
Wherein, described first network is one in TDS-CDMA system, broadband CDMA system or global system for mobile communications, and described second network is another in TDS-CDMA system, broadband CDMA system or global system for mobile communications;
The process obtaining the information on load of multiple Target cells of second network comprises:
Obtained the information on load of multiple Target cells of described second network by the Iur-g interface preset, wherein, described Iur-g interface is arranged between radio network controller and base station controller;
Wherein, following formula is utilized to determine the calculating signal level intensity R of Target cell
n:
R
n=Q
meas, n– (Q
offsets, n+ add), wherein, Q
meas, nthe signal level intensity level of the Target cell that described terminal records, Q
offsets, nbe the cell reselection bias of Target cell, add is the information on load of Target cell.
2. residence reselecting according to claim 1, is characterized in that, the Target cell quantity meeting described predetermined condition is multiple, then the process that the Target cell meeting predetermined condition is defined as the Serving cell of described terminal comprised:
By meet described predetermined condition multiple Target cells in R
nmaximum community is defined as the Serving cell of described terminal.
3. residence reselecting according to claim 1, is characterized in that, described pre-conditioned also comprise one of following: Rxlex>Q
rxlevmin; Rxlex>Q
rxlevminand Rxlex>Q
rxlevminduration be more than or equal to Treselections;
Wherein, Rxlex is the signal level intensity level of Target cell, Q
rxlevminbe preset the minimum access level intensity threshold value arranged, Treselections is cell reselection triggered time threshold value.
4. an intersystem cell reselection device, terminal is current to be resided in first network, and described cell reselection device is arranged in described terminal or described first network, it is characterized in that, described cell reselection device comprises:
Acquisition module, for obtaining the information on load of multiple Target cells of the second network of disparate systems, the process obtaining the information on load of multiple Target cells of second network comprises: the information on load being obtained multiple Target cells of described second network by the Iur-g interface preset, wherein, described Iur-g interface is arranged between radio network controller and base station controller, described first network is TDS-CDMA system, one in broadband CDMA system or global system for mobile communications, described second network is TDS-CDMA system, another in broadband CDMA system or global system for mobile communications,
Determination module, for for each Target cell, determines the calculating signal level intensity of described Target cell according to the information on load of described Target cell;
Comparison module, for the calculating signal level intensity of the calculating signal level intensity of each Target cell and current service cell is compared, the Target cell meeting predetermined condition is defined as the Serving cell of described terminal, wherein, described predetermined condition refers to: the calculating signal level intensity of this Target cell is greater than the calculating signal level intensity of described current service cell;
Wherein, described determination module utilizes following formula to determine the calculating signal level intensity R of Target cell
n:
R
n=Q
meas, n– (Q
offsets, n+ add), wherein, Q
meas, nthe signal level intensity level of the Target cell that described terminal records, Q
offsets, nbe the cell reselection bias of Target cell, add is the information on load of Target cell.
5. cell reselection device according to claim 4, is characterized in that,
Described comparison module is specifically for being multiple in the Target cell quantity meeting described predetermined condition, by meet described predetermined condition multiple Target cells in R
nmaximum community is defined as the Serving cell of described terminal.
6. the cell reselection device according to any one of claim 4 to 5, is characterized in that, described pre-conditioned also comprise one of following: Rxlex>Q
rxlevmin; Rxlex>Q
rxlevminand Rxlex>Q
rxlevminduration be more than or equal to Treselections;
Wherein, Rxlex is the signal level intensity level of Target cell, Q
rxlevminbe preset the minimum access level intensity threshold value arranged, Treselections is cell reselection triggered time threshold value.
7. an intersystem cell reselection system, comprise first network and the second network of disparate systems, terminal resides in first network, it is characterized in that, described cell reselection system comprises cell reselection device, described cell reselection device is arranged in described terminal or described first network, described first network comprises the first information on load processing unit, described second network comprises the second information on load processing unit, described first network is TDS-CDMA system, one in broadband CDMA system or global system for mobile communications, described second network is TDS-CDMA system, another in broadband CDMA system or global system for mobile communications, wherein,
Described second information on load processing unit, when measuring between different system for starting in described terminal, obtains the information on load of multiple Target cell, and described information on load is sent to described first information on load processing unit;
Described first information on load processing unit, for receiving the information on load from described second information on load processing unit, and sends to described cell reselection device by described information on load;
Described cell reselection device, for obtaining the information on load of the multiple Target cells from described first information on load processing unit; For each Target cell, determine the calculating signal level intensity of described Target cell according to the information on load of described Target cell; The calculating signal level intensity of the calculating signal level intensity of each Target cell and current service cell is compared, the Target cell meeting predetermined condition is defined as the Serving cell of described terminal, wherein, described predetermined condition refers to: the calculating signal level intensity of this Target cell is greater than the calculating signal level intensity of described current service cell;
Wherein, described first information on load processing unit obtains the information on load of multiple Target cells of described second information on load processing unit by presetting Iur-g interface, wherein, described default Iur-g interface is arranged between described first network and described second network;
Wherein, following formula is utilized to determine the calculating signal level intensity R of Target cell
n:
R
n=Q
meas, n– (Q
offsets, n+ add), wherein, Q
meas, nthe signal level intensity level of the Target cell that described terminal records, Q
offsets, nbe the cell reselection bias of Target cell, add is the information on load of Target cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010613996.5A CN102572950B (en) | 2010-12-30 | 2010-12-30 | Residence reselecting, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010613996.5A CN102572950B (en) | 2010-12-30 | 2010-12-30 | Residence reselecting, device and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102572950A CN102572950A (en) | 2012-07-11 |
| CN102572950B true CN102572950B (en) | 2016-03-30 |
Family
ID=46417136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010613996.5A Active CN102572950B (en) | 2010-12-30 | 2010-12-30 | Residence reselecting, device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102572950B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102833789B (en) * | 2012-09-18 | 2015-04-15 | 武汉邮电科学研究院 | Load balancing method for LET (Long Term Evolution) network |
| CN102883371A (en) * | 2012-09-28 | 2013-01-16 | 中兴通讯股份有限公司 | Method, device and system for network load balancing |
| CN103916921B (en) * | 2012-12-31 | 2017-08-08 | 展讯通信（上海）有限公司 | Mobile terminal and its reselecting method of different system cell |
| CN104113885B (en) * | 2013-04-16 | 2017-08-25 | 中国移动通信集团公司 | Wireless network parameter collocation method and device |
| CN104427558B (en) * | 2013-08-19 | 2018-03-16 | 联芯科技有限公司 | The method and system of packet switching service speed is improved in a kind of wireless communication system |
| CN104955128B (en) * | 2014-03-26 | 2020-09-15 | 中兴通讯股份有限公司 | Load information transmission method and system, and network element |
| CN106658613B (en) * | 2015-11-03 | 2020-04-14 | 中国移动通信集团公司 | Cell reselection method and device |
| CN105873138B (en) * | 2016-03-28 | 2019-10-25 | 努比亚技术有限公司 | A kind of residence reselecting and device |
| CN112385267B (en) * | 2020-10-15 | 2023-09-26 | 北京小米移动软件有限公司 | Method and device for determining target cell of UE, communication equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101631346A (en) * | 2009-06-05 | 2010-01-20 | 西安电子科技大学 | Region switching method based on signal intensity and load estimation |
| CN101754280A (en) * | 2009-12-28 | 2010-06-23 | 华为技术有限公司 | Multi-carrier load balancing method and device |
| CN101772094A (en) * | 2008-12-31 | 2010-07-07 | 北京信威通信技术股份有限公司 | Switching method in wireless communication system |
| CN101902789A (en) * | 2009-05-27 | 2010-12-01 | 大唐移动通信设备有限公司 | Network access method, system and device |
-
2010
- 2010-12-30 CN CN201010613996.5A patent/CN102572950B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101772094A (en) * | 2008-12-31 | 2010-07-07 | 北京信威通信技术股份有限公司 | Switching method in wireless communication system |
| CN101902789A (en) * | 2009-05-27 | 2010-12-01 | 大唐移动通信设备有限公司 | Network access method, system and device |
| CN101631346A (en) * | 2009-06-05 | 2010-01-20 | 西安电子科技大学 | Region switching method based on signal intensity and load estimation |
| CN101754280A (en) * | 2009-12-28 | 2010-06-23 | 华为技术有限公司 | Multi-carrier load balancing method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102572950A (en) | 2012-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102572950B (en) | Residence reselecting, device and system | |
| US11483720B2 (en) | Communications device and method | |
| US11317336B2 (en) | Communication method, communications apparatus, and system | |
| EP2132949B1 (en) | Selection of an uplink carrier frequency corresponding to one of co-sited cells having different coverage areas and supporting different uplink data rates | |
| KR101487355B1 (en) | Idle mode hybrid mobility procedures in a heterogeneous network | |
| JP5231551B2 (en) | Cell reselection in wireless communication systems | |
| CN103327546B (en) | Residence reselecting and device | |
| EP3091786B1 (en) | Apparatus, method and system for cell selection | |
| JP4995894B2 (en) | Method and apparatus for performing adaptive and power efficient wireless environment measurements | |
| JP5170092B2 (en) | Load balancing in mobile radio communication networks | |
| JP2014509166A (en) | Network scaling for network energy saving | |
| RU2450488C1 (en) | Method to select cell in hierarchical cellular structure based on cell quality | |
| US8655365B2 (en) | Method for managing radio links within a radio communication system with mobile units, and equipment adapted to implementing the method | |
| JP2006246428A (en) | Method for optimization of cell reselection operation in mobile network in accordance with umts standard | |
| CN101854684A (en) | Handover type based method for optimizing handover parameters in wireless celluar communication system | |
| CN102204344A (en) | Method and terminal for avoiding cell pingpong reselection | |
| CN103974350A (en) | Switching method for self-adaptive threshold adjustment | |
| EP2753125B1 (en) | Cell reselection method, device, and system | |
| CN104301974A (en) | Network switching method and system and terminal | |
| JP2009522918A (en) | Overload control device and method | |
| Gu et al. | Adaptive cell range control in heterogeneous network | |
| EP3610671B1 (en) | Uplink triggered cell handover control | |
| CN109219060B (en) | Cell coverage area adjusting method and device | |
| KR101933644B1 (en) | Base station and terminal device, and control method thereof | |
| JP5726717B2 (en) | Radio base station and radio system transition control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |