CN102958187B - Accidental access method in isomery mobile communications network - Google Patents
Accidental access method in isomery mobile communications network Download PDFInfo
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- CN102958187B CN102958187B CN201110241208.9A CN201110241208A CN102958187B CN 102958187 B CN102958187 B CN 102958187B CN 201110241208 A CN201110241208 A CN 201110241208A CN 102958187 B CN102958187 B CN 102958187B
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Abstract
The present invention relates to the accidental access method in isomery mobile communications network. In one embodiment, serving BS is risk of interferences subscriber equipment and the different uplink random access resources of non-risk of interferences user equipment allocation, by the resource of carrying random access guiding, serving BS can determine whether subscriber equipment has risk of interferences, and according to subscriber equipment whether have the different resource of risk of interferences send accidental access response and conflict solve. The method providing in the application of the invention, distributes different downlink resources according to the difference of disturbed condition, has improved the overall success rate of the random access procedure in system, thereby has saved Internet resources.
Description
Technical field
The present invention relates to mobile communication technology, more specifically, relate in isomery mobile communications networkAccidental access method.
Background technology
In order to meet the quick demand of data, services, operator is except disposing macrocellular, alsoComprise slight node (piconode), femto nodes (femtonode), via nodeAnd less radio-frequency zoom out so-called " low transmission power nodes " such as (RRH) be introduced intoExtended network covers and systematic function. In such heterogeneous network (HetNet), inOverlapping covered user can be subject to stronger presence of intercell interference, needs to take minizone for this reasonInterference coordination schemes, the resource in for example time interval of some in community (for example subframe)The transmitting power that upper employing is lower and/or reduce its activity and neighbor cell is caused avoidingStrong interference. In LTE-Advanced system, be referred to as approximate empty subframe (AlmostBlankSubframe，ABS)。
When subscriber equipment (UE) is from (RRC-idle) the state conversion of Radio Resource control free timeTo Radio Resource control connection (RRC-connected) state, or execution RRC connects againSet up, or up-link is in step-out and UE has in the situations such as new upstream data arrival,UE need carry out random access (RA) operation. As shown in Figure 1, connecing at random based on competitionEnter process and start from sending out of UE side random access guiding (RandomAccessPreamble)Send, eNB beams back accidental access response (RandomAccessResponse), UE subsequentlyCarry out corresponding scheduled transmission (ScheduledTransmission) according to the instruction of eNB,The last eNB solution (ContentionResolution) that conflicts, above-mentioned mutual signalingBe also referred to as successively message 1, message 2, message 3, message 4.
In homogeneous network is disposed, UE conventionally can be linked into and have the strongest received signal strengthIn Serving cell, therefore can complete reliably random access. And in heterogeneous network, for obtainingGet the gain that cell splitting brings, can consider the service traffics of macrocellular to be unloaded to slight honeybeeIn nest and/or femtocell, or due to closed user group (ClosedSubscriberGroup, CSG) restriction, UE probably can not access and have the strongest received signal strengthServing cell. Therefore the deployment meeting of heterogeneous network brings the reliability of random access procedureImpact.
Fig. 2 shows the deployment scenario of an isomery mobile communications network, there is shown grandBase station 21, femto base station 23 and Serving cell separately thereof, and subscriber equipment 22. WithFamily equipment 22 does not belong to the closed user group membership of femto base station 23, when it is near femtoRandom access operation is also carried out in community, because it can not access femto community, will have to connectReceive in macrocell. In the case, if come from message 2 and the message 4 of macrocellOn unprotected running time-frequency resource, dispatch, will be subject to coming from the more capable and experienced of femto communityDisturb, thereby cause the failure of random access attempts. Subscriber equipment 22 can repeat at random and connectEnter, can't access if reach maximum preamble transmission number of times, can report radio jink failure.
Fig. 3 shows the deployment scenario of another isomery mobile communications network, there is shownMacro base station 31, pico base station 33 and Serving cell separately thereof, and subscriber equipment 32,In figure, dotted line ring represents the service range extended area (rangeextension of pico base stationZone). In scene shown in Fig. 3, for example, in initial access or handoff procedure, userEquipment 32 has selected to have relatively low reception signal for obtaining more excellent cell splitting gainThe pico community of intensity. Because the residing disturbance regime of subscriber equipment 32 is not pico base stationKnown to 33, it may send message 2 and message 4 in non-protection running time-frequency resource, thereby canCan be subject to coming from macrocell compared with strong jamming, therefore the probability of random access failure is also higher.
In above-mentioned scene, for avoiding may meeting with in message 2 and message 4 transmissionStrong jamming, a comparatively direct method is the user that will send to the random access of all executionMessage 2 and the message 4 of equipment are dispatched in shielded running time-frequency resource. Particularly, forIn LTE-A system as shown in Figure 2 under scene, allow non-closed user group membership UE alwaysWhen femto cell configuration becomes approximate empty subframe (ABS), receive and come from macrocellMessage 2 and message 4, but there is following drawback in this scheme:
(1) larger access delay, particularly for being in compared with for the UE of little interference,By have to wait for until in the chance of ABS subframe receipt message 2 and message 4, nowTime delay is by closely related the density of same abs mode. If adopting larger abs mode density comesMore message 2 and the transmission opportunity of message 4 are provided, can limit the flexibility of ABS configuration,Even can be taking sacrificial system handling capacity as cost.
(2) be limited to the capacity of control channel: the scheduling instruction of message 2 and message 4 beIn Physical Downlink Control Channel (PDCCH), transmitting, more properly, is at configuration ABSPDCCH in transmit; For example, in scene shown in Fig. 2, when in macrocell, carry out withWhen the number of users of machine access is more, the limited degree of this control channel capacity can be larger.
Summary of the invention
An object of the present invention is to overcome above-mentioned shortcoming of the prior art, provide isomery to moveNew random access scheme in moving communication network.
The present invention is applicable to the system such as but not limited to LTE-A. Alleged base station in the present inventionComprise macro base station and low transmission power node, macro base station is such as but not limited to evolved Node B(eNB), low transmission power node is such as but not limited to pico base station, femto base station. DifferentStructure mobile communications network refers to the mobile communication of mixed deployment macro base station and low transmission power nodeNetwork. Macro base station and low transmission power node xenogenesis base station each other each other.
In one embodiment, proposed a kind of comprising a subscriber equipment, it serves baseStand and the isomery mobile communications network of adjacent xenogenesis base station in accidental access method, comprising:
I. described subscriber equipment is according to whether having the transmission of risk of interferences use respective resources at randomAccess lead;
Ii. the resource that described serving BS uses according to the random access guiding receiving is determinedWhether described subscriber equipment has risk of interferences, if described subscriber equipment has risk of interferences,Send and connect at random in the subframe of the descending approximate empty subframe corresponding to described adjacent xenogenesis base stationEnter response;
Iii. described subscriber equipment sends scheduled transmission;
If iv. described subscriber equipment has risk of interferences, described serving BS is corresponding to instituteThe subframe of stating the descending approximate empty subframe of adjacent xenogenesis base station sends conflict and solves.
In another embodiment, propose one and comprised a subscriber equipment, its serviceAccidental access method in the isomery mobile communications network of base station and adjacent xenogenesis base station, bagDraw together:
III. described subscriber equipment is at the accidental access response receiving from described serving BSAfter, send scheduled transmission to described serving BS, comprising whether tool of described subscriber equipmentThere is the indication information of risk of interferences;
IV. described serving BS sends conflict solution according to described indication information, if described fingerShow that information indicates described subscriber equipment to have risk of interferences, described serving BS corresponding toThe subframe of the descending approximate empty subframe of described adjacent xenogenesis base station sends conflict and solves.
In one embodiment, proposed in a kind of base station in isomery mobile communications networkFor the method for the random access of a subscriber equipment, comprising:
-broadcast is right respectively with instruction risk of interferences subscriber equipment and non-risk of interferences subscriber equipmentThe ascending resource of answering;
The resource that the random access guiding that-basis receives uses is determined described subscriber equipmentWhether there is risk of interferences, if described subscriber equipment has risk of interferences, corresponding toThe subframe of the descending approximate empty subframe of adjacent xenogenesis base station sends accidental access response;
If-described subscriber equipment has risk of interferences, corresponding to described adjacent xenogenesis baseThe subframe of the descending approximate empty subframe of standing sends conflict and solves.
In a kind of subscriber equipment in isomery mobile communications network correspondingly at randomThe method of access comprises:
-receive from the broadcast of serving BS to know risk of interferences subscriber equipment and non-interferenceThe ascending resource that risk subscriber equipment difference is corresponding;
-determine based on the signal reception situation from described serving BS and adjacent xenogenesis base stationWhether there is risk of interferences;
Whether-basis has risk of interferences uses respective resources to send random access guiding.
In another embodiment, a kind of base station in isomery mobile communications network has been proposedIn for the method for the random access of a subscriber equipment, comprising:
-receive from the scheduled transmission of subscriber equipment, comprising whether tool of described subscriber equipmentThere is the indication information of risk of interferences;
-send conflict according to described indication information to solve, if described in the instruction of described indication informationSubscriber equipment has risk of interferences, in the descending approximate gap corresponding to adjacent xenogenesis base stationThe subframe of frame sends conflict and solves.
In a kind of subscriber equipment in isomery mobile communications network correspondingly at randomThe method of access comprises:
-based on determining whether from the signal reception situation of serving BS and adjacent xenogenesis base stationThere is risk of interferences;
-send scheduled transmission to described serving BS, comprising whether tool of described subscriber equipmentThere is the indication information of risk of interferences.
In the above-described embodiments, in the time that the serving BS of subscriber equipment is macro base station, adjacent differentPlanting base station is low transmission power node; When the serving BS of subscriber equipment is low transmission power jointWhen point, adjacent xenogenesis base station is macro base station.
The method providing in the application of the invention, can improve isomery mobile communications networkThe reliability of the random access of middle subscriber equipment.
Brief description of the drawings
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings,Other features, objects and advantages of the present invention will become more apparent:
Fig. 1 shows the random access procedure based on competition in LTE-A system;
Fig. 2 shows the deployment scenario of an isomery mobile communications network;
Fig. 3 shows the deployment scenario of another isomery mobile communications network;
Fig. 4 show according to an embodiment of the invention comprise a subscriber equipment,Random access side in the isomery mobile communications network of its serving BS and adjacent xenogenesis base stationThe flow chart of method;
Fig. 5 show according to another embodiment of the invention comprise a subscriber equipment,Random access side in the isomery mobile communications network of its serving BS and adjacent xenogenesis base stationThe flow chart of method;
Fig. 6 shows according to an embodiment of the invention in isomery mobile communications networkBase station in for the flow chart of the method for the random access of a subscriber equipment;
Fig. 7 shows according to an embodiment of the invention in isomery mobile communications networkSubscriber equipment in for the flow chart of the method for random access;
Fig. 8 show according to another embodiment of the invention at isomery mobile communications networkIn base station in for the flow chart of the method for the random access of a subscriber equipment;
Fig. 9 show according to another embodiment of the invention at isomery mobile communications networkIn subscriber equipment in for the flow chart of the method for random access;
In the drawings, run through different diagrams, same or similar Reference numeral represents characteristic of correspondence.
Detailed description of the invention
Fig. 4 show according to an embodiment of the invention comprise a subscriber equipment,Random access side in the isomery mobile communications network of its serving BS and adjacent xenogenesis base stationThe flow chart of method. The method between subscriber equipment 42 and its serving BS 41 at randomAccess procedure, the downstream signal that subscriber equipment 42 receives may be subject to adjacent xenogenesis base station (withServing BS is xenogenesis base station each other) strong interference and there is risk of interferences. As shown in the figure,The method comprising the steps of 410,420,430,440.
In step 410, whether subscriber equipment 42 bases have risk of interferences uses corresponding moneySource sends random access guiding (message 1). Particularly, there is risk of interferences and do not have dryThe subscriber equipment of disturbing risk sends random access guiding with different ascending resources respectively,And such resource division is known for subscriber equipment and serving BS, thus serviceBase station can go out to send this random access guiding according to the resource identification of carrying random access guidingSubscriber equipment whether there is risk of interferences.
In step 420, serving BS 41 uses according to the random access guiding receivingResource determine whether subscriber equipment 41 has risk of interferences, if subscriber equipment has interferenceRisk, sends random in the subframe of the descending approximate empty subframe corresponding to adjacent xenogenesis base stationAccess response (message 2). Like this, can avoid the downstream signal of adjacent xenogenesis base station as far as possibleFor the interference of the accidental access response of serving BS, the reception that improves accidental access response becomesPower.
In step 430, subscriber equipment 42 sends scheduled transmission (message 3).
In step 440, if subscriber equipment 42 has risk of interferences, serving BS 41Sending conflict in the subframe of the descending approximate empty subframe corresponding to described adjacent xenogenesis base station solves(message 4). Like this, can avoid the downstream signal of adjacent xenogenesis base station for service as far as possibleThe interference that the conflict of base station solves, improves the successful receiving rate that conflict solves.
Correspondingly, if subscriber equipment 42 does not have risk of interferences, serving BS 41 canOther subframes outside the subframe of the descending approximate empty subframe corresponding to adjacent xenogenesis base station are sent outSend accidental access response and conflict to solve. Like this, the downlink resource of random access procedure is able toReasonable distribution, thus more how close simultaneous random access can be supported, and according toThe difference of disturbed condition is distributed different downlink resources, has improved random access the in systemThe overall success rate of journey, thus Internet resources saved.
Alternatively, before step 410, also comprise a step of being carried out by serving BS 41405 (not shown): broadcast is established with instruction risk of interferences subscriber equipment and non-risk of interferences userThe ascending resource that back-up is not corresponding.
Particularly, serving BS is to have the subscriber equipment of risk of interferences and do not have interference windThe subscriber equipment of danger distributes respectively different uplink random access resources, and informs by broadcastAll subscriber equipmenies in its service area. Such resource division can be that running time-frequency resource is divided,Also can be a yard territory resource division.
Serving BS can be by the Physical Random Access Channel configuration index (PRACH strengtheningConfigurationIndex) realizing running time-frequency resource divides. For example, configuration index is 3 o'clockRepresent that the PRACH that the subframe in even frame 1 is configured is for having the user of risk of interferencesEquipment sending message 1, PRACH that the subframe in odd-numbered frame 1 is configured are for non-interferenceRisk subscriber equipment sends message 1. Again for example, configuration index is within 6 o'clock, to represent in each frameThe PRACH that subframe 1 configures sends message 1 for risk of interferences subscriber equipment; By each frameIn the PRACH that configures of subframe 6 send message for the subscriber equipment of non-risk of interferences1。
Serving BS also can divide for risk of interferences subscriber equipment and non-risk of interferences subscriber equipmentJoin different random access guiding set (code territory resource division). Risk of interferences subscriber equipmentMeeting random selection in the leading set retaining for risk of interferences subscriber equipment is leading, but notRisk of interferences subscriber equipment can be in the leading set retaining for non-risk of interferences subscriber equipmentRandom selection is leading.
For above-mentioned two kinds of uplink random access resources dividing mode, base station can be according at randomThe number of load state, risk of interferences subscriber equipment and the Fei Fei risk of interferences subscriber equipment of accessThe information such as order, dynamically or semi-statically resource allocation is divided.
Particularly, before step 410, can also comprise the step of being carried out by subscriber equipment 42407 (not shown): receive based on the signal from serving BS 41 and adjacent xenogenesis base stationSituation determines whether to have risk of interferences.
For example, subscriber equipment 42 can judge according to Reference Signal Received Power (RSRP)Whether there is risk of interferences, when from serving BS 41 and reference from adjacent xenogenesis base stationSignal received power poor (or ratio) is less than a predetermined threshold, is judged to be to have dryDisturb risk, otherwise do not there is risk of interferences. Again for example, subscriber equipment 42 can be according to ginsengExamine signal receiving quality (RSRQ) and judge whether to there is risk of interferences, when from service baseStand and 41 be less than with poor (or ratio) from the Reference Signal Received Quality of adjacent xenogenesis base stationA predetermined threshold, is judged to be to have risk of interferences, otherwise does not have risk of interferences.
Above-mentioned method both can be applied to scene shown in Fig. 2, also can be applied to Fig. 3 instituteShow scene. While being applied to scene shown in Fig. 2, subscriber equipment 42 is corresponding to subscriber equipment 22,Serving BS 41 is corresponding to macro base station 21, and adjacent xenogenesis base station is corresponding to femto base station 23.While being applied to scene shown in Fig. 3, subscriber equipment 42 is corresponding to subscriber equipment 32, serving BS41 corresponding to pico base station 33, and adjacent xenogenesis base station is corresponding to macro base station 31.
Fig. 5 show according to another embodiment of the invention comprise a subscriber equipment,Random access side in the isomery mobile communications network of its serving BS and adjacent xenogenesis base stationThe flow chart of method. The method between subscriber equipment 52 and its serving BS 51 at randomAccess procedure, the downstream signal that subscriber equipment 52 receives may be subject to adjacent xenogenesis base station (withServing BS is xenogenesis base station each other) strong interference and there is risk of interferences. As shown in the figure,The method comprising the steps of 530,540.
In step 530, subscriber equipment 52 is receiving random from serving BS 51After access response (message 2), send scheduled transmission (message 3) to serving BS 51,Whether there is the indication information of risk of interferences comprising subscriber equipment 52.
In step 540, serving BS 51 is sent out according to the described indication information in scheduled transmissionSend conflict to solve (message 4). If described indication information equipment for indicating user 52 has dryDisturb risk, serving BS 51 is in the descending approximate empty subframe corresponding to adjacent xenogenesis base stationSubframe sends conflict and solves. Like this, can avoid the downstream signal of adjacent xenogenesis base station as far as possibleThe interference solving for the conflict of serving BS, improves the successful receiving rate that conflict solves.
Correspondingly, if indication information equipment for indicating user 52 does not have risk of interferences, serviceBase station 51 can be outside the subframe of the descending approximate empty subframe corresponding to adjacent xenogenesis base stationOther subframes send accidental access response and conflict solves. Like this, random access procedure underRow resource is able to reasonable distribution, thereby can support more how close simultaneous random access,And distribute different downlink resources according to the difference of disturbed condition, improved in system withThe overall success rate of machine access procedure, thus Internet resources saved.
In LTE system, subscriber equipment sends RRC (nothing in scheduled transmission (message 3)Line resource key-course) connection request or RRC reconnect request. The tune sending in step 530Indication information in degree transmission can utilize original field, for example, connect and set up reason(EstablishmentCause) field or connection re-establishment reason (ReestablishmentCause) field. Can be two kinds of new values of above-mentioned Field Definition, represent respectively to have dryDisturb risk and do not there is risk of interferences. Or, also can define new field using as instructionWhether subscriber equipment has the indication information of risk of interferences. This new field only needs 1 bitCan.
Optionally, before step 530, serving BS 51 is corresponding to adjacent xenogenesis base stationDescending approximate empty subframe subframe send accidental access response (message 2). Like this, canThe downstream signal of as far as possible avoiding adjacent xenogenesis base station is for the accidental access response of serving BSDisturb, improve the successful receiving rate of accidental access response.
Particularly, before step 530, can also comprise the step of being carried out by subscriber equipment 52507 (not shown): receive based on the signal from serving BS 51 and adjacent xenogenesis base stationSituation determines whether to have risk of interferences.
For example, subscriber equipment 52 can judge according to Reference Signal Received Power (RSRP)Whether there is risk of interferences, when from serving BS 51 and reference from adjacent xenogenesis base stationSignal received power poor (or ratio) is less than a predetermined threshold, is judged to be to have dryDisturb risk, otherwise do not there is risk of interferences. Again for example, subscriber equipment 52 can be according to ginsengExamine signal receiving quality (RSRQ) and judge whether to there is risk of interferences, when from service baseStand and 51 be less than with poor (or ratio) from the Reference Signal Received Quality of adjacent xenogenesis base stationA predetermined threshold, is judged to be to have risk of interferences, otherwise does not have risk of interferences.
Above-mentioned method both can be applied to scene shown in Fig. 2, also can be applied to Fig. 3 instituteShow scene. While being applied to scene shown in Fig. 2, subscriber equipment 52 is corresponding to subscriber equipment 22,Serving BS 51 is corresponding to macro base station 21, and adjacent xenogenesis base station is corresponding to femto base station 23.While being applied to scene shown in Fig. 3, subscriber equipment 52 is corresponding to subscriber equipment 32, serving BS51 corresponding to pico base station 33, and adjacent xenogenesis base station is corresponding to macro base station 31.
Fig. 6 shows according to an embodiment of the invention in isomery mobile communications networkBase station in for the flow chart of the method for the random access of a subscriber equipment. Fig. 7 showsWith method shown in Fig. 6 accordingly in subscriber equipment for the flow process of the method for random accessFigure. Method shown in Fig. 6 comprises step 610,620,630. Shown in Fig. 7, method comprises step710,720,730. Method shown in Fig. 6, Fig. 7 is jointly for serving BS and subscriber equipmentBetween random access procedure, subscriber equipment receive downstream signal may be subject to adjacent xenogenesisThe strong interference of base station (with serving BS xenogenesis base station each other) and there is risk of interferences.
In step 610, base station broadcast is with instruction risk of interferences subscriber equipment and non-interference windAscending resource corresponding to danger subscriber equipment difference.
In step 620, the resource that base station is used according to the random access guiding receivingDetermine whether this subscriber equipment has risk of interferences, if described subscriber equipment has interference windDanger, sends and connects at random in the subframe of the descending approximate empty subframe corresponding to adjacent xenogenesis base stationEnter response (message 2).
In step 630, if described subscriber equipment has risk of interferences, base station is rightDescribed in Ying Yu, the subframe of the descending approximate empty subframe of adjacent xenogenesis base station sends to conflict with solving and (disappearsBreath 4).
In step 710, subscriber equipment receives from the broadcast of serving BS to know interferenceRisk subscriber equipment and ascending resource corresponding to non-risk of interferences subscriber equipment difference.
In step 720, subscriber equipment is based on from described serving BS and adjacent xenogenesis baseThe signal reception situation of standing determines whether to have risk of interferences.
In step 730, whether subscriber equipment basis has risk of interferences uses respective resourcesSend random access guiding (message 1).
Above-mentioned steps 610,620,630 corresponds respectively to embodiment described in conjunction with Figure 4In step 405,420,440. Above-mentioned steps 720,730 corresponds respectively in conjunction with Fig. 4Step 407,410 in described embodiment.
About serving BS for risk of interferences subscriber equipment and non-risk of interferences subscriber equipmentThe dividing mode of uplink random access resources and subscriber equipment are for whether having interference windThe judgment mode of danger, all can adopt identical with embodiment described in conjunction with Figure 4 aboveOr similar mode, do not repeat them here.
Above-mentioned method both can be applied to scene shown in Fig. 2, also can be applied to Fig. 3 instituteShow scene. While being applied to scene shown in Fig. 2, subscriber equipment, corresponding to subscriber equipment 22, takesBusiness base station is corresponding to macro base station 21, and adjacent xenogenesis base station is corresponding to femto base station 23. ApplicationIn the time of scene shown in Fig. 3, subscriber equipment is corresponding to subscriber equipment 32, serving BS corresponding toPico base station 33, adjacent xenogenesis base station is corresponding to macro base station 31.
Fig. 8 shows according to an embodiment of the invention in isomery mobile communications networkBase station in for the flow chart of the method for the random access of a subscriber equipment. Fig. 9 showsCorresponding with method shown in Fig. 8, in subscriber equipment for the stream of the method for random accessCheng Tu. Method shown in Fig. 8 comprises step 810,820. Method shown in Fig. 9 comprise step 910,920. Random between serving BS and subscriber equipment jointly of method shown in Fig. 8, Fig. 9Access procedure, the downstream signal that subscriber equipment receives may be subject to adjacent xenogenesis base station (with clothesBusiness xenogenesis base station each other, base station) strong interference and there is risk of interferences.
In step 810, base station receives the scheduled transmission from subscriber equipment, comprisingWhether described subscriber equipment has the indication information of risk of interferences.
In step 820, base station sends conflict according to described indication information and solves (message 4),If described indication information indicates described subscriber equipment to have risk of interferences, corresponding to phaseThe subframe of the descending approximate empty subframe of adjacent xenogenesis base station sends conflict and solves.
In step 910, subscriber equipment is based on from serving BS and adjacent xenogenesis base stationSignal reception situation determines whether to have risk of interferences.
In step 920, subscriber equipment sends scheduled transmission to described serving BS, whereinComprise whether described subscriber equipment has the indication information of risk of interferences.
Above-mentioned steps 820 is corresponding to the step 540 in embodiment described in conjunction with Figure 5. OnState step 910,920 correspond respectively to step 507 in embodiment described in conjunction with Figure 5,530。
In scheduled transmission, carry the indication information whether with risk of interferences about subscriber equipmentMode and subscriber equipment for the judgment mode whether with risk of interferences, all canSame or analogous mode in employing and above embodiment described in conjunction with Figure 5, at this notRepeat again.
Above-mentioned method both can be applied to scene shown in Fig. 2, also can be applied to Fig. 3 instituteShow scene. While being applied to scene shown in Fig. 2, subscriber equipment, corresponding to subscriber equipment 22, takesBusiness base station is corresponding to macro base station 21, and adjacent xenogenesis base station is corresponding to femto base station 23. ApplicationIn the time of scene shown in Fig. 3, subscriber equipment is corresponding to subscriber equipment 32, serving BS corresponding toPico base station 33, adjacent xenogenesis base station is corresponding to macro base station 31.
Those skilled in the art will be understood that above-described embodiment is all exemplary and nonrestrictive.The different technologies feature occurring in different embodiment can combine, to obtain beneficial effect.Those skilled in the art, on the basis of research accompanying drawing, description and claims, will be understood thatAnd realize the embodiment of other variations of the embodiment that discloses. In claims, term " bagDraw together " do not get rid of other devices or step; Indefinite article " one " is not got rid of multiple; Term " theOne ", " second " is for indicating title but not for representing any specific order. ClaimIn any Reference numeral all should not be understood to the restriction to protection domain. Some technical characterictic goes outNow in different dependent claims and do not mean that and these technical characterictics can not be combinedTo obtain beneficial effect.
Claims (13)
1. one kind is comprising a subscriber equipment, its serving BS and adjacent xenogenesis base stationAccidental access method in isomery mobile communications network, comprises the following steps:
O. the signal of described subscriber equipment based on from described serving BS and adjacent xenogenesis base stationReception situation determines whether to have risk of interferences;
I. described subscriber equipment is according to whether having the transmission of risk of interferences use respective resources at randomAccess lead;
Ii. the resource that described serving BS uses according to the random access guiding receiving is determinedWhether described subscriber equipment has risk of interferences, if described subscriber equipment has risk of interferences,Send and connect at random in the subframe of the descending approximate empty subframe corresponding to described adjacent xenogenesis base stationEnter response;
Iii. described subscriber equipment sends scheduled transmission;
If iv. described subscriber equipment has risk of interferences, described serving BS is corresponding to instituteThe subframe of stating the descending approximate empty subframe of adjacent xenogenesis base station sends conflict and solves.
2. accidental access method according to claim 1, is characterized in that, describedBefore step I, also comprise:
Described serving BS broadcasts to indicate risk of interferences subscriber equipment and non-risk of interferences userThe ascending resource that equipment difference is corresponding.
3. accidental access method according to claim 1, is characterized in that, described clothesBusiness base station is macro base station, and described adjacent xenogenesis base station is femto base station or pico base station.
4. accidental access method according to claim 1, is characterized in that, described clothesBusiness base station is femto base station or pico base station, and described adjacent xenogenesis base station is macro base station.
5. one kind is comprising a subscriber equipment, its serving BS and adjacent xenogenesis base stationAccidental access method in isomery mobile communications network, comprises the following steps:
III. described subscriber equipment is at the accidental access response receiving from described serving BSAfter, send scheduled transmission to described serving BS, comprising whether tool of described subscriber equipmentThere is the indication information of risk of interferences;
IV. described serving BS sends conflict solution according to described indication information, if described fingerShow that information indicates described subscriber equipment to have risk of interferences, described serving BS corresponding toThe subframe of the descending approximate empty subframe of described adjacent xenogenesis base station sends conflict and solves.
6. accidental access method according to claim 5, is characterized in that, describedBefore Step II I, also comprise:
II. described serving BS is in the descending approximate empty subframe corresponding to described adjacent xenogenesis base stationSubframe send accidental access response.
7. accidental access method according to claim 5, is characterized in that, describedBefore Step II I, also comprise:
Described subscriber equipment is based on connecing from the signal of described serving BS and adjacent xenogenesis base stationReceipts situation determines whether to have risk of interferences.
8. accidental access method according to claim 5, is characterized in that, described clothesBusiness base station is macro base station, and described adjacent xenogenesis base station is femto base station or pico base station.
9. accidental access method according to claim 5, is characterized in that, described clothesBusiness base station is femto base station or pico base station, and described adjacent xenogenesis base station is macro base station.
In a base station in isomery mobile communications network for a subscriber equipment withThe method of machine access, comprising:
Broadcast is corresponding respectively with instruction risk of interferences subscriber equipment and non-risk of interferences subscriber equipmentAscending resource, wherein, described risk of interferences subscriber equipment is based on from serving BS and adjacentThe signal reception situation of xenogenesis base station determines that it has risk of interferences;
The resource using according to the random access guiding receiving determines that described subscriber equipment isNo have risk of interferences, if described subscriber equipment has risk of interferences, corresponding to phaseThe subframe of the descending approximate empty subframe of adjacent xenogenesis base station sends accidental access response;
If described subscriber equipment has risk of interferences, corresponding to described adjacent xenogenesis baseThe subframe of the descending approximate empty subframe of standing sends conflict and solves.
For random access in 11. 1 kinds of subscriber equipmenies in isomery mobile communications networkMethod, comprising:
Receive from the broadcast of serving BS to know risk of interferences subscriber equipment and non-interference windAscending resource corresponding to danger subscriber equipment difference;
Determine based on the signal reception situation from described serving BS and adjacent xenogenesis base station and beNo have a risk of interferences;
Use respective resources to send random access guiding according to whether thering is risk of interferences;
If described subscriber equipment has risk of interferences, corresponding to adjacent xenogenesis base stationIn the subframe of descending approximate empty subframe, receive the random access sound that comes from described serving BSShould;
If described subscriber equipment has risk of interferences, corresponding to described adjacent xenogenesis baseIn the subframe of the descending approximate empty subframe of standing, receive the conflict solution that comes from described serving BSCertainly.
In 12. 1 kinds of base stations in isomery mobile communications network for a subscriber equipment withThe method of machine access, comprising:
Receive the scheduled transmission from described subscriber equipment, comprising described subscriber equipment beThe no indication information with risk of interferences;
Send conflict according to described indication information and solve, if described in the instruction of described indication informationSubscriber equipment has risk of interferences, in the descending approximate gap corresponding to adjacent xenogenesis base stationThe subframe of frame sends conflict and solves.
For random access in 13. 1 kinds of subscriber equipmenies in isomery mobile communications networkMethod, comprising:
Based on determining whether tool from the signal reception situation of serving BS and adjacent xenogenesis base stationThere is risk of interferences;
Send scheduled transmission to described serving BS, comprising whether tool of described subscriber equipmentThere is the indication information of risk of interferences;
If described indication information indicates described subscriber equipment to have risk of interferences, receiveFrom in the son in the descending approximate empty subframe corresponding to adjacent xenogenesis base station of described serving BSThe conflict that frame sends solves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110241208.9A CN102958187B (en) | 2011-08-22 | 2011-08-22 | Accidental access method in isomery mobile communications network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110241208.9A CN102958187B (en) | 2011-08-22 | 2011-08-22 | Accidental access method in isomery mobile communications network |
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| CN101686544A (en) * | 2008-09-22 | 2010-03-31 | 中兴通讯股份有限公司 | Method for distributing special random access resource and base station |
| CN102104964A (en) * | 2010-12-22 | 2011-06-22 | 北京邮电大学 | Method and system for coordinating and scheduling frequency band resources in cellular network |
| CN102595631A (en) * | 2011-01-07 | 2012-07-18 | 华为技术有限公司 | Random access method, base station and terminal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101686544A (en) * | 2008-09-22 | 2010-03-31 | 中兴通讯股份有限公司 | Method for distributing special random access resource and base station |
| CN102104964A (en) * | 2010-12-22 | 2011-06-22 | 北京邮电大学 | Method and system for coordinating and scheduling frequency band resources in cellular network |
| CN102595631A (en) * | 2011-01-07 | 2012-07-18 | 华为技术有限公司 | Random access method, base station and terminal |
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