Embodiment
Below in conjunction with drawings and Examples radio resource management method and the radio network controller that the present invention proposes illustrated in greater detail.
The present invention to use cell portion Cell Portion technology and is supporting in the environment of SDMA in order to solve, user terminal UE is between subregion Portion when mobile, may cause no longer satisfying and require and the formation strong jamming empty the branch, have a strong impact on the problem that the user uses, in embodiments of the invention one, a kind of radio resource management method is provided, divide multiplexing need state change situation in advance to judge and preliminary treatment user terminal at the by stages Mobile Space-time by this method, as shown in Figure 2, this method comprises:
Metrical information when step S201, network side obtain active user's terminal UE sky branch state, described metrical information comprises the special uplink channel received signal code power RSCP corresponding with different subregions;
As previously mentioned, the network side base station can obtain RSCP (the Received Signal Code Power of UE different subregion received signals in the sub-district, received signal code power), and can report and comprise with the metrical information of the RSCP of the corresponding special uplink channel of different Portion and give RNC, RSCP is corresponding with Portion, and representative is the RSCP from this Portion received signal.
Step S202, network side determine the difference of the strongest RSCP in the metrical information and time strong RSCP less than setting threshold Th, and this difference determines that the subregion of described strong RSCP correspondence is a target partition when surpassing scheduled duration less than duration of setting threshold;
Network side can obtain the strongest RSCP and the inferior difference of RSCP by force in the metrical information according to the metrical information that measures, the difference of the strongest RSCP and time strong RSCP is less than setting threshold Th, illustrate that UE the by stages may take place moves, in order to determine whether more accurately that further the by stages can take place moves, can increase by a timer in the present embodiment, timer picks up counting when determining difference less than setting threshold Th first, if when determining to surpass scheduled duration according to timer, difference in present embodiment determines then that always less than setting threshold Th the subregion of described strong RSCP correspondence is a target partition.Concrete grammar is not limited thereto, and can also adopt alternate manner.
Above-mentioned setting threshold Th specifically can determine according to the coverage condition of real network in the present embodiment, and when certain divided area edge, it advised general span 0dB-10dB in the upward signal received power difference of current subregion and adjacent sectors as test UE; The general scope of selecting of above-mentioned scheduled duration is also relevant with the coverage condition of real network, move to about 1/2 of two subregion intersections (the by stages difference power is 0) the used time according to distance between the adjacent sectors and user moving speed (it is generally acknowledged walking speed 3km/h) conversion user from a branch area edge (the by stages difference power reaches threshold value Th), advise general span 0ms-5000ms.
Step S203, network side obtain the ownership subregion with the UE of empty the branchs resource of current UE, and determine described ownership subregion whether and the isolation between described target partition satisfy the requirement of empty branch;
Because the isolation between cell portion is comparatively fixing, belongs to the user without the by stages, only otherwise occur striding moving of subregion, isolation big variation can not occur.The isolation that therefore can network side can obtain different by stages in advance according to geographical coverage property.The isolation that has only the by stages is during greater than certain threshold value, just thinks to satisfy and emptyly divides requirement promptly to satisfy empty spacer spare.Promptly be not that space division multiplexing can be adopted in all by stages in the sub-district; if moving to target partition, UE whether also satisfies the empty requirement that divides with its empty UE that divides by prejudging in the present embodiment with current; carry out the resource adjustment when requiring in advance in dissatisfied empty the branch; when specifically adjusting; can adopt existing resources to distribute; concrete adjustment mode is selected as required flexibly; move to the situation that target partition can cause interference so long as overcome UE; and guarantee that this resource adjustment can not produce the resource adjustment mode of new interference, all should fall within the present invention's scope required for protection.
The radio resource management method that proposes in the embodiment of the invention can be in the environment that utilizes Cell Portion technology, under changing, user terminal makes pre-judgments in advance and preliminary treatment before the Portion, avoid owing to no longer satisfying the empty strong jamming that divides the isolation condition to cause after moving, thereby guaranteed professional excellent perception of normally carrying out with the user.
Provide under the different situations network side among the step S203 below and adjust several preferred implementations of resource allocation, wherein a kind of situation is the current idling-resource that has, have under the situation of idling-resource, select in the present embodiment current UE and/or with the UE of empty the branchs resource of current UE in carry out the resource adjustment, wherein adjusting afterwards, the sky branch state of described current UE is disengaged.
Having under the situation of idling-resource, preferably use idling-resource, form new sky branch because use other resource to adjust the empty branch of other UE of participant, need also to guarantee can not cause new interference whether the requirement of satisfied empty branch waits judgement promptly to need to carry out isolation.And when using idling-resource, the used resource of current UE can be adjusted on the idling-resource, also can with the UE of empty the branchs resource of current UE in UE adjust on the idling-resource, also can both all adjust, as long as satisfy adjust after the sky branch state of current UE be disengaged.Like this,, can not cause interference, so and owing to be to use new resources rather than space division multiplexing resource can not cause new interference no matter whether UE takes place to move between Portion yet.
In the present embodiment, when the UE with the empty branch resource of current UE only had one, selection wherein any UE all could.Have when a plurality of at the UE with the empty branch resource of current UE, preferably that current UE is used resource is adjusted on the described idling-resource.Remove empty branch state and need adjust all and the current empty UE that divides because will guarantee current UE in this case, may make idling-resource cause resource anxiety etc. inadequately.
In addition, higher in order to guarantee success rate for switching, in the present embodiment, when the UE with the empty branch resource of current UE only has one, obtain the strongest RSCP in the metrical information that this two UE the last times are measured respectively; The used resource of UE that the strongest RSCP is bigger is adjusted on the idling-resource.Therefore the residing position of UE that the strongest RSCP is bigger is relatively good, and the ability of received signal is more intense, thereby the success rate that resource is adjusted is just bigger.
The another kind of situation of network side adjustment resource allocation is the situation of current no idling-resource among the step S203, at this moment, just need carry out the resource adjustment and change current sky branch and can produce new sky branch, will guarantee that also no matter whether current UE the by stages takes place move this adjustment all can not cause interference.Preferably, when only having one at current no idling-resource and with the UE of empty the branchs resource of current UE in the present embodiment, the resource that current UE is used is adjusted on the resource of other UE sky branch except that these two UE; Wherein after adjustment, the ownership subregion of current UE and isolation with the ownership by stages of the empty UE that divides resource of current UE satisfy and emptyly divide requirement, and described target partition satisfies the empty requirement that divides with isolation with the ownership by stages of the empty UE that divides resource of current UE.Therefore, can guarantee that current UE all can satisfy empty branch and require can not form with other UE to disturb no matter whether current UE the by stages takes place move.
Perhaps, network side is adjusted resource allocation among the step S203, specifically comprise: when only having one at current no idling-resource and with the UE of empty the branchs resource of current UE, will with the empty used resource of UE of dividing resource of current UE, adjust on the resource of other UE sky branch except that these two UE; Wherein after adjustment, be adjusted the ownership subregion of UE, satisfy the requirement of empty branch with isolation with the ownership by stages of the UE that is adjusted empty the branchs resource of UE.Therefore, current UE is removed empty branch state after adjusting, and regardless of whether moving, can not disturb above-mentioned controlled UE of while and the also satisfied empty branch requirement of UE that divides with its sky with other UE formation.
In addition, in order to guarantee higher handover success rate, network side is adjusted resource allocation among the step S203, specifically comprises:
When only having one, obtain the strongest RSCP in the metrical information that this two UE the last times are measured respectively at current no idling-resource and with the UE of the empty branch resource of current UE;
When the bigger UE of the strongest RSCP is current UE, the resource that current UE is used, adjust on the empty resource of dividing of other UE except that these two UE, the ownership subregion of adjusting the back current UE and isolation with the ownership by stages of the empty UE that divides resource of current UE satisfy and emptyly divide requirement, and described target partition satisfies the empty requirement that divides with isolation with the ownership by stages of the empty UE that divides resource of current UE;
When the bigger UE of the strongest RSCP is UE with the empty branch resource of current UE, to divide the used resource of UE of resource with the current UE sky, adjust on the empty resource of dividing of other UE except that these two UE, be adjusted the ownership subregion of UE after the adjustment, satisfy the requirement of empty branch with isolation with the ownership by stages of the UE that is adjusted empty the branchs resource of UE.
Have when a plurality of at current no idling-resource and with the UE of empty the branchs resource of current UE, network side is adjusted resource allocation among the step S203, specifically comprises: the resource that current UE is used, adjust on the resource with other UE sky branch except that these two UE; Wherein after adjustment, the ownership subregion of current UE and isolation with the ownership by stages of the empty UE that divides resource of current UE satisfy and emptyly divide requirement, and described target partition satisfies the empty requirement that divides with isolation with the ownership by stages of the empty UE that divides resource of current UE.Adjustment also is only to adjust the used resource of a UE (being current UE) like this, makes no matter whether current UE the by stages takes place move, and can not produce interference.
Preferably, this radio resource management method also comprises: network side is determined the ownership subregion with the empty UE that divides of current UE, and the isolation between described target partition satisfies empty the branch when requiring, and it is constant to preserve current resource distribution mode.
In embodiments of the invention two, characteristic in conjunction with Cell Portion, idiographic flow according to RRM, above-mentioned network side comprises base station (Node B) and radio network controller (RNC) in the present embodiment, because the base station can measure UE and comprise the metrical information of this UE from the RSCP of different subregion received signals, need configurating base station to report at least 2 received signal code power RSCP that the strongest and different subregions are corresponding of UE to RNC, a setting threshold Th and a timer also are set in the present embodiment, and timer duration is T.As shown in Figure 3, if certain current UE is in empty branch state, then carry out this flow process:
Metrical information when step S301, network side obtain active user's terminal UE sky branch state, described metrical information comprises the received signal code power RSCP corresponding with different subregions;
The base station reports the metrical information of the corresponding received signal code power RSCP of at least 2 the strongest and different subregions comprising UE to RNC, and RNC can determine that the subregion of the strongest RSCP correspondence be the ownership subregion of UE according to these metrical informations.
Step S302, network side judges that whether the strongest RSCP reaches time difference of strong RSCP less than setting threshold in the metrical information, and this difference surpasses scheduled duration less than the duration of setting threshold, if, execution in step S303, if not, illustrating does not need to carry out the resource adjustment, returns step S301 and proceeds information and obtain;
This judgement can be carried out in the RNC side, and promptly RNC determines according to the metrical information that the base station reports; Perhaps this judgement can be carried out in the base station, is configured to the base station and reports with event mode.
Step S303 determines that the subregion of described strong RSCP correspondence is target P ortion;
When the RSCP difference of the strongest Portion and time strong Portion less than thresholding Th and when keeping triggering timer duration T, think that this UE may change best Portion (promptly may occur between Portion and move), execution in step S304;
Step S304, according to the isolation of different by stages, whether judgement can no longer be satisfied sky with the current empty UE that divides and divide requirement after if current UE moves to this target P ortion, if still satisfy then process ends, otherwise, jump to step S305;
Step S305 judges current whether only have a UE and the empty branch of current UE, if then jump to step S306, otherwise jumps to step S311;
Step S306 determines the current idling-resource that whether has, if idling-resource is arranged, execution in step S307 is not if having idling-resource, execution in step S308;
Step S307 obtains the strongest RSCP in the metrical information that this two UE the last times are measured respectively, and the used resource of UE that the strongest RSCP is bigger is adjusted on the idling-resource process ends;
Step S308, obtain the strongest RSCP in the metrical information that this two UE the last times are measured respectively, determine whether the bigger UE of the strongest RSCP is current UE, when the bigger UE of the strongest RSCP is current UE, execution in step S309, when the bigger UE of the strongest RSCP is UE with the empty branch resource of current UE, execution in step S310;
Step S309, the resource that current UE is used, adjust on the empty resource of dividing of other UE except that these two UE, the ownership subregion of adjusting the back current UE with satisfy the requirement of sky branch with the isolation between the ownership subregion (also claiming target empty to divide the UE subregion of ownership) of the UE of empty the branchs resource of current UE, and described target partition divides requirement with the satisfied sky of isolation of the ownership by stages of the UE that divides resource with the current UE sky, and process ends;
Step S310, to divide the used resource of UE of resource with the current UE sky, adjust on the empty resource of dividing of other UE except that these two UE, be adjusted the ownership subregion of UE after the adjustment, and satisfy sky with the isolation between the ownership subregion (also claiming target empty to divide the UE subregion of ownership) of the UE that is adjusted the empty branch resource of UE and divide requirement, and process ends;
Step S311 determines the current idling-resource that whether has, if idling-resource is arranged, execution in step S312 is not if having idling-resource, execution in step S313;
Step S312, the resource that current UE is used is adjusted on the described idling-resource, process ends;
Step S313, the resource that current UE is used is adjusted on the empty resource of dividing of other UE except that these two UE; Wherein after adjustment, the ownership subregion of current UE satisfies the empty requirement that divides with the isolation of the ownership by stages of the UE that divides resource with the current UE sky, and described target partition satisfies empty requirement, the process ends of dividing with the isolation of the ownership by stages of the UE that divides resource with the current UE sky.
In embodiments of the invention three, a kind of radio network controller is provided, as shown in Figure 4, comprise: metrical information acquiring unit 401, metrical information when being used to obtain active user's terminal UE sky branch state, described metrical information comprises the special uplink channel received signal code power RSCP corresponding with different subregions; Target partition determining unit 402 is used for difference at the strongest RSCP of metrical information and time strong RSCP less than setting threshold, and this difference determines that the subregion of described strong RSCP correspondence is a target partition when surpassing scheduled duration less than duration of setting threshold; The empty determining unit 403 of dividing is used to obtain the ownership subregion with the UE of empty the branchs resource of current UE, and determine described ownership subregion whether and the isolation between described target partition satisfy the requirement of empty branch; Resource adjustment unit 404 is used for determining that not satisfying empty the branch adjusts resource allocation when requiring.
Preferably, above-mentioned resource adjustment unit 404 specifically comprises: idling-resource determining unit 4041 is used for determining the current idling-resource that whether has; First adjustment unit 4042 is used for determining current when idling-resource is arranged, and selects current UE and/or carries out the resource adjustment with the UE of empty the branchs resource of current UE, and the sky branch state of current UE is disengaged after adjusting.Having under the situation of idling-resource, preferably using idling-resource to carry out the resource adjustment.When the UE with the empty branch resource of current UE only has one, can select any UE to carry out the resource adjustment.
Preferably, described resource adjustment unit also comprises: the strongest RSCP acquiring unit 4043, be used for when the UE with empty the branchs resource of current UE only has one, obtain the strongest RSCP in the metrical information that measures to current UE with UE the last time of current UE sky branch resource respectively; Described first adjustment unit 4042 specifically is used for the used resource of UE that the strongest RSCP is bigger and adjusts to described idling-resource, guarantees having higher success rate of resource adjustment.
Described first adjustment unit 4042 is used for specifically also determining that UE with the empty branch resource of current UE has when a plurality of that the resource that current UE is used is adjusted on the described idling-resource.Like this, only adjusting a UE can meet the demands, and overcomes the interference that may produce and because current use idling-resource can not produce new interference yet.
Preferably, described resource adjustment unit 404 also comprises: second adjustment unit 4044, when only having one at current no idling-resource and with the UE of empty the branchs resource of current UE, the resource that current UE is used, adjust to except that current UE and with the UE of empty the branchs resource of current UE the resource of other UE sky branch on; Wherein after adjustment, the ownership subregion of current UE and isolation with the ownership by stages of the empty UE that divides resource of current UE satisfy and emptyly divide requirement, and described target partition satisfies the empty requirement that divides with isolation with the ownership by stages of the empty UE that divides resource of current UE.No matter whether current UE can take place to move between Portion, avoid the interference that may produce and also can not produce new interference after all can guaranteeing to adjust like this.
Preferably, described resource adjustment unit 404 also comprises: the 3rd adjustment unit 4045, when being used for only there is one at current no idling-resource and with the UE of the empty branch resource of current UE, will with the empty used resource of UE of dividing resource of current UE, adjust to except that current UE and with the resource of other UE sky branch of the UE of empty the branchs resource of current UE on; Wherein after adjustment, be adjusted the ownership subregion of UE, satisfy the requirement of empty branch with isolation with the ownership by stages of the UE that is adjusted empty the branchs resource of UE.The sky of having removed current UE under this situation divides state and the new sky that produces to divide can not cause inter-user interference yet.
Preferably, described resource adjustment unit 404 also comprises: the 4th adjustment unit 4046, be used for having when a plurality of at current no idling-resource and with the UE of the empty branch resource of current UE, the resource that current UE is used, adjust to except that current UE and with the resource of other UE sky branch of the UE of empty the branchs resource of current UE on; Wherein after adjustment, the ownership subregion of current UE and isolation with the ownership by stages of the empty UE that divides resource of current UE satisfy and emptyly divide requirement, and described target partition satisfies the empty requirement that divides with isolation with the ownership by stages of the empty UE that divides resource of current UE.
Preferably, this wireless network control also comprises: resource holding unit 405, be used for determining the ownership subregion with the empty UE that divides of current UE, and the isolation between described target partition satisfies empty the branch when requiring, and it is constant to preserve current resource distribution mode.
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.