CN102469480A - Method and system for controlling and managing optimized wireless resource - Google Patents

Method and system for controlling and managing optimized wireless resource Download PDF

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Publication number
CN102469480A
CN102469480A CN2010105391427A CN201010539142A CN102469480A CN 102469480 A CN102469480 A CN 102469480A CN 2010105391427 A CN2010105391427 A CN 2010105391427A CN 201010539142 A CN201010539142 A CN 201010539142A CN 102469480 A CN102469480 A CN 102469480A
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target cell
cell
district
frequency
current area
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CN102469480B (en
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张瑜
程翔
方建民
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Yancheng hi tech Pioneer Park Co.,Ltd.
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ZTE Corp
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Abstract

The invention relates to a method and a system for managing an optimized wireless resource. The method comprises the following steps that: whether available resource of a current subdistrict which is requested by user equipment (UE) to access satisfies the UE requirement is judged by the network side; when the available resource of the current subdistrict cannot satisfy the requirement of the UE, the network side select an available target subdistrict; the network side transmits the information of the selected target subdistrict to the UE; and the UE reselect the target subdistrict or is re-accessed to the target subdistrict according to the information of the target subdistrict. Due to the adoption of the method and the system for managing the optimized wireless resource, the present resource can be reasonably utilized, and definite resource can be allocated to UE.

Description

The Radio Resource control and management method and system of optimizing
Technical field
The present invention relates to wireless communication field, relate in particular to a kind of Radio Resource control and management method and system of optimization.
Background technology
Under the background that global low-carbon (LC) notion is constantly promoted and Telecom Competition is violent day by day; Satisfy high data rate and quality are provided in, operator is also in the mode of constantly seeking ability energy-saving equipment energy consumption, and along with development of wireless communication devices; In the real network environment; Multiple communication standard and the probability of depositing are increasing, therefore, how to coordinate current available resource; Not only fully satisfy the user's communications request but also satisfy operator to the reasonable resources utilization, also all be the main direction of Research on Communication Technology all the time.
At UMTS (Universal Mobile Telecommunications System; UMTS) in the system; Usually; A Node B (NodeB) comprises a baseband processing unit (BBU) and a plurality of RF processing unit (RU), and therefore, the power consumption of practicing thrift RU is the optimal path that reaches base station energy-saving.At present, the energy-conservation technology of RF processing unit the carrier wave dormancy arranged, close auxilliary antenna in the emission of many antennas, public channel power control, the discontinuous emission in sub-district etc.Wherein,
Carrier wave dormancy: RNC (Radio Network Controller; The wireless network access device) one or more carrier wave progressively or is fully closed in indication; Be that Node B can close or turn down one or more power amplifiers (Power Aamplifier PA) reaches the purpose of saving energy consumption;
Close auxilliary antenna: to supporting MIMO (Multiple-Input Multiple-Out-put; Multiple-input and multiple-output) there is not the UE that supports the MIMO function in the Node B of function in the sub-district, perhaps UE does not work under the MIMO pattern; Perhaps have only a small amount of UE under the MIMO pattern, to work; Then RNC can indicate Node B to get into power save mode, the auxilliary antenna of closing these sub-districts, the MIMO and the transmit diversity function of promptly closing these sub-districts;
Public channel power control: when cell edge does not have UE resident, then Node B can weaken the transmitting power of common signal channel, reduces coverage radius of cell, weakens the power amplifier gross output and reaches the purpose of saving energy consumption;
The discontinuous emission in sub-district (DTX): the power amplifier through periodically closing the sub-district reaches the purpose that reduces the power amplifier power consumption.
These power-saving technologies can both be passed through radio network controller, and (Radio Network Controller RNC) controls triggering, acts on one or more sub-district of this RNC subordinate.RNC can be through monitoring the situation of current area in real time, and decision issues energy-conservation order, and indicating cell gets into power save mode, and power save mode refers to respectively: the sub-district gets into resting state, does not launch any power; The auxilliary antenna in sub-district cuts out, and does not support the MIMO function; The district common channel power attenuation, the overlay area dwindles; The sub-district gets into DTX (Discontinuous Transmission, discontinuous transmission mode)) state, press the Fixed Time Interval transmitting power, therefore, can both save the energy consumption of Node B.Wherein RNC control triggers energy-conservation reference frame, can be following one or more, the current UE number that resides in this sub-district; The service traffics of current area; The traffic carrying capacity of the UE of use MIMO or UE number etc. in the current area.
But in the practice process,, be difficult to avoid to occur frequently carrying out energy-conservation activation, deactivating operation or UE and can not obtain sufficient problems such as Radio Resource in energy-conservation sub-district if RNC only carries out the indication of power-save operation according to the state of current area.To close auxilliary antenna power-saving technology is example, and some sub-districts are in power save mode at present, and promptly the auxilliary antenna of this sub-district cuts out; The MIMO function is unavailable, and the UE with MIMO function that resides in this sub-district this moment need initiate to insert, and sets up reason and is: enumerate (caller background service); Domain identifier: (data field) enumerated, according to normal RRM decision making algorithm, RNC can be based upon DCH attitude (dedicated channel with RRC connection; The tailored version channel) and launch MIMO; But because this moment, present access subzone MIMO function was closed, then can't activate MIMO, the possibility of result of generation be following one of them:
1, do not activate MIMO mode, then UE can't reach the speed that is complementary with business demand;
2, activate MIMO mode, depend on the energy-conservation algorithm that RNC is concrete, but might cause the operation of the frequent activation MIMO pattern of RNC.
At present; Most operators all have the network of two kinds or above different systems; Therefore; When the sub-district of connection request that UE initiates has had very heavy load, RNC can be reoriented to idle relatively frequency or different grid with UE through congestion avoidance algorithm, produces extensive congested and solves congested and access problem that cause preventing.But; UE can only initiate to insert according to the blind again selection of the reference frequency point information sub-district that RNC provided, and therefore, produces the new sub-district of initiating to insert inevitably and faces OL problem equally; Finally cause needs long turn-on times, have a strong impact on the user experience impression.
Summary of the invention
The technical problem that the present invention will solve provides a kind of radio resource management method and system of optimization, rationally to utilize existing resource, distributes definite resource to give UE.
For solving above technical problem, the invention provides a kind of Radio Resource control and management method of optimization, this method comprises:
Whether the available resources of the current area that network side judges equipment (UE) request inserts satisfy the demand of said UE;
When the current area available resources did not satisfy the demand of said UE, said network side was selected available Target cell;
Said network side sends to said UE with the target cell information of the Target cell of selecting;
Said UE is according to said target cell information gravity treatment or be linked into said Target cell again.
Further, said network side sends said target cell information through Radio Resource control connection foundation (RRC CONNECTIONSETUP) message or Radio Resource control connection refusal (RRC CONNECTION REJECT) message.
Further, said Target cell and said current area are homologous ray co-frequency cell, homologous ray alien-frequency district or different system cell.
Further,
If said Target cell and current area are UTRAN alien-frequency district or UTRAN co-frequency cell, said target cell information comprises the frequency point information of cell ID and this sub-district;
If said Target cell and current area are different system cell, and said Target cell is the GSM sub-district, and said target cell information comprises the affiliated base station identity code (BSIC) of said Target cell and the absolute wireless frequency number of channel of BCCH (BCCH ARFCN);
If said Target cell and current area are different system cell, and said Target cell is the E-UTRAN sub-district, and said target cell information comprises the downlink carrier frequency (DL Carrier frequency) of target.
For solving above technical problem, the present invention also provides a kind of Radio Resource control management system of optimization, and this system comprises:
The cell available resources judge module of network side, whether the available resources that are used for the current area of judges equipment (UE) request access satisfy the demand of said UE;
The Target cell of network side is selected module, when the current area available resources can not satisfy the demand of said UE, is used to select available Target cell;
The target cell information sending module of said network side is used for the target cell information of the Target cell of selecting is sent to said UE;
The link block of said UE is used for according to said target cell information gravity treatment or is linked into said Target cell again.
Further, said target cell information sending module sends said target cell information through Radio Resource control connection foundation (RRCCONNECTION SETUP) message or Radio Resource control connection refusal (RRC CONNECTIONREJECT) message.
Further, said Target cell and said current area are homologous ray co-frequency cell, homologous ray alien-frequency district or different system cell.
Further, if said Target cell and current area are UTRAN alien-frequency district or UTRAN co-frequency cell, said target cell information comprises the frequency point information of cell ID and this sub-district;
If said Target cell and current area are different system cell, and said Target cell is the GSM sub-district, and said target cell information comprises the affiliated base station identity code (BSIC) of said Target cell and the absolute wireless frequency number of channel of BCCH (BCCH ARFCN);
If said Target cell and current area are different system cell, and said Target cell is the E-UTRAN sub-district, and said target cell information comprises the downlink carrier frequency (DL Carrier frequency) of target.
The inventive method and system; To there be the UE of the request of access to be directed to available homologous ray or the different aims of systems sub-district that is different from current initiation access sub-district; Under the situation that makes full use of current power save mode resource and idling-resource; Satisfy purpose energy-conservation and that reduce the UE access attempts time, avoid frequent triggering cell to get into/withdraw from power save mode and cause terminal needs long turn-on times owing to part is congested.
Description of drawings
Fig. 1 is the sketch map of the Radio Resource control and management method optimized of the present invention;
Fig. 2 is the sketch map of the concrete processing procedure of the embodiment of the invention one;
Fig. 3 is the sketch map of the concrete processing procedure of the embodiment of the invention two;
Fig. 4 is the sketch map of the concrete processing procedure of the embodiment of the invention three;
Fig. 5 is the sketch map of the concrete processing procedure of the embodiment of the invention four;
Fig. 6 is the sketch map of the concrete processing procedure of the embodiment of the invention five;
Fig. 7 is the sketch map of the concrete processing procedure of the embodiment of the invention six;
Fig. 8 is the sketch map of the concrete processing procedure of the embodiment of the invention seven.
Fig. 9 is the modular structure sketch map of the Radio Resource control management system of optimization.
Embodiment
The main thought of the inventive method and system is the power save mode of network side overall arrangement current area, current load condition and the UE access request in each sub-district; Insert the particular content of request according to UE; To there be the UE of the request of access to be directed to available homologous ray or the different aims of systems sub-district that is different from current initiation access sub-district; Under the situation that makes full use of current power save mode resource and idling-resource; Satisfy purpose energy-conservation and that reduce the UE access attempts time, avoid frequent triggering cell to get into/withdraw from power save mode and cause terminal needs long turn-on times owing to part is congested.
As shown in Figure 1, the radio resource management method and the system of optimization of the present invention comprise:
Step 101: whether the available resources of the current area that network side judges equipment (UE) request inserts satisfy said UE demand;
Step 102: when the current area available resources did not satisfy the demand of said UE, said network side was selected available Target cell;
Step 103: said network side sends to said UE with the target cell information of the Target cell of selecting;
Step 104: said UE is according to said target cell information gravity treatment or be linked into said Target cell again.
For the various network standard, the corresponding network element of carrying out the network side function in the above flow process is different, for the UMTS network, the network element of carrying out the network side function be the wireless network access device (RadioNetwork Controller, RNC); For EPS (evolved packet system, Evolved Packet System), the network element of carrying out the network side function is evolution base station (E-NodeB).Among this paper embodiment with RNC as the network element of realizing above network side function.
Network side (like RNC) can be according to the particular content of the access request of UE; RNC prejudges the current available local resource and the power save mode of each sub-district; Preferably distribute the current available sub-district that is in non-power save mode as Target cell, said Target cell and said current area can be homologous ray co-frequency cell, homologous ray alien-frequency district or different system cell.Under the different situations, be used to represent that the concrete implication of target cell information of Target cell is different:
If said Target cell and current area are UTRAN alien-frequency district or UTRAN co-frequency cell, said target cell information comprises the frequency point information of cell ID (like Cell-ID) and this sub-district, specifically referring to embodiment one to three and embodiment six to seven;
If said Target cell and current area are different system cell; And said Target cell is a GSM (global system for mobile communications; Global System for Mobile Communications) sub-district; Said target cell information comprises affiliated base station identity code (the Base transceiver Station IdentityCode of said Target cell; BSIC) and the corresponding embodiment four of the absolute wireless frequency number of channel of BCCH (Broadcast ControlChannel Absolute Radio Frequency Channel Number, BCCH ARFCN);
If said Target cell and current area are different system cell; And said Target cell is UTRAN (Evolved UTRAN:E-UTRAN) sub-district of evolution; Said target cell information comprises the downlink carrier frequency (DL Carrier frequency) of target, corresponding embodiment five.
Hereinafter will combine accompanying drawing that embodiments of the invention are elaborated.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Embodiment one
Scene description: Cell A and Cell B belong to the UTRAN co-frequency cell, and for convenience, said Cell A and Cell B belong to same RNC; Cell A is in power save mode (common signal channel is energy-conservation), and Cell B is in non-power save mode (emission of common signal channel full power); The current Cell A that is in power save mode that resides in of UE.In this embodiment, RNC is through sending RRC CONNECTION SETUP message informing UE target cell information.As shown in Figure 2, may further comprise the steps:
Step 110:UE sends wireless resource control connection request (RRC CONNECTIONREQUEST is also referred to as the RRC connection request) and initiates to insert request:;
Step 120:RNC issues the Radio Resource control connection and sets up (RRC CONNECTIONSETUP is also referred to as RRC and connects foundation), wherein has RRC state indication (RRC State Indicator): Cell_FACH; The cell ID of Cell B and frequency point information;
RNC inserts the request decision according to UE and forwards UE to the CELL-FACH attitude (to take resource few for UE under this state; No dedicated link), but current C ell A is in power save mode (common signal channel is energy-conservation), needs the public channel power of lifting sub-district; And this moment, Cell B still had available radio resources; Therefore, RNC selects Cell B as Target cell, and notice UE.
Description according to present 3GPP agreement; After RNC receives the RRC CONNECTIONREQUEST of UE; Can forward CELL-FACH operation and relevant frequency point information down to through RRC CONNECTION SETUP message informing UE; UE can only carry out the process of Cell searching again according to the frequency point information of RNC indication; Be that RNC can not just can not guarantee that also the selected resident sub-district of UE meets requirements of saving energy through after the reorientation of RRC CONNECTION SETUP process through this message positioning UE to Target cell.
On the basis of existing protocol, this paper provides following protocol modification scheme: the optional sub-cell that in the physical channel message of RRCCONNECTION SETUP message, increases Frequency info: cell ID Cell-ID; UE after receiving this message, if cell ID Cell-ID exists, the frequency point information that then provides according to this Frequency info cell with and the cell identity information that provides of the sub-cell Cell-ID of subordinate, UE can be directly resident this sub-district also synchronously:
Step 130:UE reselects to Cell B according to the Cell ID and the frequency point information of carrying in the RRC CONNECTION SETUP message;
Step 140:UE sets up the RRC connection and sends Radio Resource control connection completion (RRCCONNECTION COMPLETE is also referred to as RRC and connects completion) message to RNC at Cell B.
Embodiment two
Scene description: Cell A and Cell B belong to the UTRAN alien-frequency district, and for convenience, said Cell A and Cell B belong to different RNCs; Cell A is in power save mode (common signal channel is energy-conservation), and Cell B is in non-power save mode (emission of common signal channel full power); The current Cell A that is in power save mode that resides in of UE, in this embodiment, RNC is through sending RRC CONNECTION REJECT message informing UE target cell information.As shown in Figure 3, may further comprise the steps:
Step 210:UE initiates to insert request: RRC CONNECTION REQUEST;
Step 220:RNC issues Radio Resource control connection refuse information (RRC CONNECTIONREJECT is also referred to as RRC and connects refusal), wherein has frequency point information and the cell ID of Cell B;
RNC inserts the request decision according to UE and forwards UE to the CELL-FACH attitude; But current C ell A is in power save mode (common signal channel is energy-conservation); The public channel power that needs the lifting sub-district, but this moment, CellB still had available radio resources, therefore; RNC selects Cell B as Target cell, and notice UE.
Description according to present 3GPP agreement; RNC is after receiving the RRC CONNECTIONREQUEST of UE; Persistent district belongs to the alien-frequency district of frequency and forwards CELL-DCH to (under this state when if desired UE being reoriented to transmission access request; UE takies the resource maximum; And special-purpose uplink downlink is arranged) when operating down, can UE be redirected to the purpose of Target cell but only can't satisfy the demand too through the target frequency of RRC CONNECTION REJECT message informing UE reference according to frequency point information.
On the basis of existing protocol, this paper provides following protocol modification scheme: the optional sub-cell that increases Frequency info among the Redirection info of RRC CONNECTIONREJECT message: cell ID Cell-ID; UE after receiving this message, if cell ID Cell-ID exists, the frequency point information that then provides according to this Frequency info cell with and the cell identity information that provides of the sub-cell Cell-ID of subordinate, UE can directly choose this Target cell.
Step 230:UE reselects to Cell B according to frequency point information and Cell-id that RRC CONNECTION REJECT carries;
Step 240:UE initiates RRC CONNECTION REQUEST to RNC at Cell B;
Step 250:RNC sends RRC CONNECTION SETUP to UE, wherein has RRCState Indicator:Cell_FACH; Frequency point information and cell ID under the CellB;
Step 260:UE sets up the RRC connection and sends RRC CONNECTION COMPLETE to RNC.
Embodiment three
Scene description: Cell A and Cell B belong to the UTRAN alien-frequency district, and for convenience, said Cell A and Cell B belong to same RNC; Cell A is in power save mode (auxilliary antenna cuts out, and the MIMO function is unavailable), and Cell B is in non-power save mode (major-minor antenna is opened, and the MIMO function can be used); The current Cell A that is in power save mode that resides in of UE, UE supports the MIMO function, in this embodiment, RNC is through sending RRC CONNECTION REJECT message informing UE target cell information.It is as shown in Figure 4,
Step 310:UE initiates to insert request at Cell A: RRC CONNECTION REQUEST;
Step 320:RNC issues RRC CONNECTION REJECT, wherein has affiliated frequency point information of Cell B and cell ID;
RNC forwards UE the CELL-DCH attitude to and launches the MIMO function according to the ability information decision that UE inserts request and UE; But current C ell A is in power save mode (auxilliary antenna cuts out, and the MIMO function is unavailable), needs to open the business demand that auxilliary antenna could satisfy UE; But Cell B still had available radio resources and can support the MIMO function this moment; Therefore, RNC selects Cell B as Target cell, and notice UE.
Step 330:UE reselects to Cell B according to frequency point information and Cell-id that RRC CONNECTION REJECT carries;
Step 340:UE initiates RRC CONNECTION REQUEST to RNC at Cell B;
Step 350:RNC sends RRC CONNECTION SETUP to UE, wherein has RRCState Indicator:Cell_DCH; The frequency point information of CellB and cell ID; The MIMO function is opened;
Step 360:UE sets up the RRC connection and sends RRC CONNECTION COMPLETE to RNC.
Among the above embodiment one to three; Current area (Cell A) and Target cell (Cell B) belong to same RNC; Intelligible; As long as the RNC under the current area has the resource state information of other RNC jurisdiction districts, the terminal is notified as Target cell in the sub-district that also can select other RNC to have jurisdiction over.
In following examples four, five, Target cell is different system cell, and the present invention program stands good.
Embodiment four
Scene description: Cell A belongs to the UTRAN sub-district, and Cell B belongs to the GSM sub-district; Cell A is in power save mode; The current Cell A that is in power save mode that resides in of UE.As shown in Figure 5, may further comprise the steps:
Step 410:UE initiates to insert request: RRC CONNECTION REQUEST, and the speech business of CS territory is set up in request;
Step 420:RNC issues RRC CONNECTION REJECT; Wherein carry affiliated base station identity code (the Base transceiver Station Identity Code of Cell B; BSIC) and the absolute wireless frequency number of channel of BCCH (Broadcast Control Channel Absolute Radio FrequencyChannel Number, BCCH ARFCN);
RNC is in power save mode (common signal channel is energy-conservation) according to current C ell A, needs the public channel power of lifting sub-district, and this moment, GSM sub-district Cell B Radio Resource can be used; Therefore, RNC selects CellB as Target cell, and notice UE.
Step 430:UE resides in GSM sub-district Cell B according to BSIC, BCCH ARFN;
Step 440:UE is the CellB request of setting up (Channel Req) that makes a call in the GSM sub-district;
Step 450:BSC issues assignment commands (Immediate AssignmentCommand) immediately according to reason for claim etc.
Embodiment five
Scene description: Cell A belongs to the UTRAN sub-district, and Cell B belongs to the E-UTRAN sub-district; Cell A is in power save mode (auxilliary antenna cuts out, and the MIMO function is unavailable); The current Cell A that is in power save mode that resides in of UE, UE supports the MIMO function.As shown in Figure 6, this method comprises:
Step 510:UE initiates to insert request: RRC CONNECTION REQUEST, and the PS domain data service is set up in request;
Step 520:RNC issues RRC CONNECTION REJECT, and wherein E-UTRA TargetInfo has the relevant downlink carrier frequency (DL Carrier frequency) of Cell B;
RNC forwards UE the CELL-DCH attitude to and launches the MIMO function according to the ability information decision that UE inserts request and UE; But current C ell A is in power save mode (auxilliary antenna cuts out, and the MIMO function is unavailable), needs to open the business demand that auxilliary antenna could satisfy UE; But this moment, different system E-UTRAN sub-district Cell B still had available radio resources; Therefore, RNC selects Cell B as Target cell, and notice UE.
Step 530:UE selects to reside in Cell B according to DL Carrier frequency;
Step 540:UE initiates RRC CONNECTION REQUEST in the E-UTRAN sub-district;
Step 550:E-UTRAN issues RRC CONNECTION SETUP according to the request of UE;
Step 560:UE sets up the RRC connection and sends RRC CONNCETION COMPLETE and give E-UTRAN.
Embodiment six:
Scene description: Cell A and Cell B belong to the UTRAN co-frequency cell, and for convenience, said Cell A and Cell B belong to same RNC; Cell A is near congestion state, and Cell B resource is idle relatively; The current Cell A that resides in of UE.In this embodiment, RNC is through sending RRCCONNECTION SETUP message informing UE target cell information.As shown in Figure 7, may further comprise the steps:
Step 610:UE sends wireless resource control connection request (RRC CONNECTIONREQUEST is also referred to as the RRC connection request) and initiates to insert request:;
Step 620:RNC issues the Radio Resource control connection and sets up (RRC CONNECTIONSETUP is also referred to as RRC and connects foundation), wherein has RRC state indication (RRC State Indicator): Cell_DCH; The cell ID of Cell B and frequency point information;
RNC forwards UE to the CELL-DCH attitude according to the ability information decision that UE inserts request and UE, but current C ell A is near congestion state, and this moment, Cell B still had available radio resources, and therefore, RNC selects Cell B as Target cell, and notice UE.
Step 630:UE reselects to Cell B according to the Cell ID and the frequency point information of carrying in the RRC CONNECTION SETUP message;
Step 640:UE sets up the RRC connection and sends Radio Resource control connection completion (RRCCONNECTION COMPLETE is also referred to as RRC and connects completion) message to RNC at Cell B.
Embodiment seven
Scene description: Cell A and Cell B belong to the UTRAN alien-frequency district, belong to different RNC respectively; Cell A is near congestion state, and Cell B resource is idle relatively; The current Cell A that resides in of UE.In this embodiment, RNC is through sending RRC CONNECTION REJECT message informing UE target cell information.As shown in Figure 8, may further comprise the steps:
Step 710:UE sends wireless resource control connection request (RRC CONNECTIONREQUEST is also referred to as the RRC connection request) and initiates to insert request:;
Step 720:RNCl issues RRC CONNECTION REJECT, wherein has affiliated frequency point information of Cell B and cell ID, cause value: congested control;
RNCl forwards UE to the CELL-DCH attitude according to the ability information decision that UE inserts request and UE, but current C ell A is near congestion state, and this moment, Cell B still had available radio resources, and therefore, RNC selects Cell B as Target cell, and notice UE.
Step 730:UE reselects to Cell B according to frequency point information and Cell-id that RRC CONNECTION REJECT carries;
Step 740:UE initiates RRC CONNECTION REQUEST to RNC2 at Cell B;
Step 750:RNC2 sends RRC CONNECTION SETUP to UE, wherein has RRCState Indicator:Cell_DCH; The frequency point information of CellB and cell ID; The MIMO function is opened;
Step 760:UE sets up the RRC connection and sends RRC CONNECTION COMPLETE to RNC2.
In order to realize above method, the present invention also provides a kind of Radio Resource control management system of optimization, and is as shown in Figure 9, and this system comprises:
The cell available resources judge module of network side, whether the available resources that are used for the current area of judges equipment (UE) request access satisfy the demand of said UE;
The Target cell of network side is selected module, when the current area available resources do not satisfy the demand of said UE, is used to select available Target cell;
The target cell information sending module of said network side is used for the target cell information of the Target cell of selecting is sent to said UE;
The link block of said UE is used for according to said target cell information gravity treatment or is linked into said Target cell again.
The target cell information sending module sets up (RRCCONNECTION SETUP) message through the Radio Resource control connection or Radio Resource control connection refusal (RRC CONNECTIONREJECT) message is sent said target cell information.
As indicated above, for the various network standard, realize that the network element of network side function is different, for the UMTS network, the network element of carrying out the network side function be the wireless network access device (RadioNetwork Controller, RNC); For EPS (evolved packet system, Evolved Packet System), the network element of carrying out the network side function is evolution base station (E-NodeB).
Said Target cell and said current area are homologous ray co-frequency cell, homologous ray alien-frequency district or different system cell.Under the different situations, be used to represent that the concrete implication of target cell information of Target cell is different:
If said Target cell and current area are UTRAN alien-frequency district or UTRAN co-frequency cell, said target cell information comprises the frequency point information of cell ID and this sub-district;
If said Target cell and current area are different system cell, and said Target cell is the GSM sub-district, and said target cell information comprises the affiliated base station identity code (BSIC) of said Target cell and the absolute wireless frequency number of channel of BCCH (BCCH ARFCN);
If said Target cell and current area are different system cell, and said Target cell is the E-UTRAN sub-district, and said target cell information comprises the downlink carrier frequency (DL Carrier frequency) of target.
The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to accomplish through program, said program can be stored in the computer-readable recording medium, like read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.
In sum; The inventive method and system initiate in Radio Resource control (Radio ResourceControl) connection request process at UE; Power save mode, the load condition of network side overall arrangement current area are according to the access request of UE, when the current area available resources can not satisfy the UE demand; Selection is different from current initiation and inserts the homologous ray or the different aims of systems sub-district of sub-district and notify UE; With the current Radio Resource capable of using of overall arrangement, satisfy purpose energy-conservation and that reduce the UE access attempts time, can avoid frequently adjusting simultaneously sub-district power save mode, state.

Claims (8)

1. the Radio Resource control and management method of an optimization is characterized in that this method comprises:
Whether the available resources of the current area that network side judges equipment (UE) request inserts satisfy the demand of said UE;
When the current area available resources did not satisfy the demand of said UE, said network side was selected available Target cell;
Said network side sends to said UE with the target cell information of the Target cell of selecting;
Said UE is according to said target cell information gravity treatment or be linked into said Target cell again.
2. the method for claim 1 is characterized in that: said network side sets up (RRC CONNECTION SETUP) message through the Radio Resource control connection or Radio Resource control connection refusal (RRC CONNECTION REJECT) message is sent said target cell information.
3. the method for claim 1, it is characterized in that: said Target cell and said current area are homologous ray co-frequency cell, homologous ray alien-frequency district or different system cell.
4. the method for claim 1 is characterized in that:
If said Target cell and current area are UTRAN alien-frequency district or UTRAN co-frequency cell, said target cell information comprises the frequency point information of cell ID and this sub-district;
If said Target cell and current area are different system cell, and said Target cell is the GSM sub-district, and said target cell information comprises the affiliated base station identity code (BSIC) of said Target cell and the absolute wireless frequency number of channel of BCCH (BCCH ARFCN);
If said Target cell and current area are different system cell, and said Target cell is the E-UTRAN sub-district, and said target cell information comprises the downlink carrier frequency (DL Carrier frequency) of target.
5. the Radio Resource control management system of an optimization is characterized in that, this system comprises:
The cell available resources judge module of network side, whether the available resources that are used for the current area of judges equipment (UE) request access satisfy the demand of said UE;
The Target cell of network side is selected module, when the current area available resources can not satisfy the demand of said UE, is used to select available Target cell;
The target cell information sending module of said network side is used for the target cell information of the Target cell of selecting is sent to said UE;
The link block of said UE is used for according to said target cell information gravity treatment or is linked into said Target cell again.
6. system as claimed in claim 5 is characterized in that: said target cell information sending module sets up (RRC CONNECTION SETUP) message through the Radio Resource control connection or Radio Resource control connection refusal (RRC CONNECTION REJECT) message is sent said target cell information.
7. system as claimed in claim 5 is characterized in that: said Target cell and said current area are homologous ray co-frequency cell, homologous ray alien-frequency district or different system cell.
8. system as claimed in claim 5 is characterized in that:
If said Target cell and current area are UTRAN alien-frequency district or UTRAN co-frequency cell, said target cell information comprises the frequency point information of cell ID and this sub-district;
If said Target cell and current area are different system cell, and said Target cell is the GSM sub-district, and said target cell information comprises the affiliated base station identity code (BSIC) of said Target cell and the absolute wireless frequency number of channel of BCCH (BCCH ARFCN);
If said Target cell and current area are different system cell, and said Target cell is the E-UTRAN sub-district, and said target cell information comprises the downlink carrier frequency (DL Carrier frequency) of target.
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