CN102149163A - System and method for reporting random access information in carrier polymerization - Google Patents
System and method for reporting random access information in carrier polymerization Download PDFInfo
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- CN102149163A CN102149163A CN201010121136XA CN201010121136A CN102149163A CN 102149163 A CN102149163 A CN 102149163A CN 201010121136X A CN201010121136X A CN 201010121136XA CN 201010121136 A CN201010121136 A CN 201010121136A CN 102149163 A CN102149163 A CN 102149163A
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Abstract
The invention provides a system and method for reporting random access information in carrier polymerization. The method comprises the following steps: a base station indicates user equipment to report random access information during initiating random access on a designated component carrier through a signaling; and the user equipment reports the random access information on the designated component carrier to the base station according to the signaling. By using a technical scheme of the invention, a terminal can report the random access information of any random access process so that the base station can optimize the random access of the corresponding component carrier according to parameter information reported by the user equipment and increase the optimizing accuracy of the random access.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of system and method that reports random access information in the carrier aggregation.
Background technology
Long Term Evolution (Long Term Evolution, abbreviating LTE as) network is by evolution Universal Terrestrial Radio Access Network network (Evolved Universal Terrestrial Radio Access Network, abbreviate E-UTRAN as) and evolution block core (Evolved Packet Core, abbreviate EPC as) form, this LTE network presents flattening, wherein, E-UTRAN can be made up of a plurality of evolution base stations that are connected with EPC (Evolved NodeB abbreviates eNB as).
In the LTE system, if subscriber equipment (User Equipment, abbreviate UE as) need carry out alternately with network side, then at first need to obtain uplink synchronous, and initiation random access procedure, wherein, this random access procedure can be divided into based on the random access procedure of competition with based on non-competing random access procedure according to form.
Wherein, the prefix sequence sign indicating number (Preamble) that is used for inserting at random in each sub-district is 64, and based on competition and non-competing access way, the Preamble sign indicating number is divided into two groups according to above-mentioned; And be used for being divided into two groups based on the Preamble sign indicating number of the access way at random of competing according to the size of follow-up the 3rd random accessing message Msg3 and the path loss size of measurement: GroupA and GroupB.Therefore, 64 Preamble sign indicating numbers are divided into three groups.
Because a certain moment has several UE and initiates above-mentioned random access procedure simultaneously in the sub-district, therefore, for the random access procedure that uses same group of Preamble sign indicating number based on competition, conflict phenomenon may appear, cause the random access procedure of UE initiation or the follow-up mutual failure of UE and network side, finally cause part UE in the sub-district call setup to occur, handover delay is bigger, success rate reduces.In addition, because physical layer Random Access Channel (Physical Random Access Channel abbreviates PRACH as) needs fixedly to take the part interface-free resources of sub-district,, can cause the waste of cell radio resource if the PRACH configuration is improper.For addressing this problem, can set up the back in the sub-district and adopt method such as on-the-spot manual testing to gather the estate performance parameter, and the manual amendment disposes accordingly, thereby improve the performance of system.But because the complexity of wireless environment, by artificial optimization's system parameters do not have time variation, network optimization efficient is not high, thereby cause expending of great deal of labor.
Current, in order to reduce the artificial maintenance workload of above-mentioned network and to improve network optimization ability, at next generation mobile networks (Next Generation Mobile Network, abbreviate NGMN as) in the demand that proposes of tissue, LTE need support self-organizing network (Self-Organized Network, abbreviate SON as) function, wherein, comprise the self-optimization function of Random Access Channel.The parameter configuration (comprising the configuration of Random Access Channel) that can come the Automatic Optimal sub-district by the self-configuring function and the self-optimization function of network.But, reach the purpose of the network optimization, at first must obtain the performance index of current network, in the current agreement of LTE, the parameter information the when method of the information that the base station need be by obtaining UE obtains UE and inserts at random, the flow process of this method as shown in Figure 1:
Step 101: the base station sends UE information request (UE Information Request) to UE, comprises the request (rachReportReq is set to True) that reports that inserts at random in this request.
Step 102:UE reports UE information response (UE Information Response) to the base station, the information that in this response, comprises the access at random (the last successfully completedrandom access procedure) of the last success of UE, comprise that UE sends the number of times of Access Preamble (numberOfPreamblesSent) at random, and whether detect competition (contentionDetected).
In order to satisfy people to the demand of high bandwidth more, LTE Advance proposes the purpose of the bigger bandwidth of method realization of employing carrier aggregation, this moment, (each carrier wave was called component carrier by a plurality of continuous or discrete carrier waves in a sub-district, Component Carrier) forms, the service of multicarrier can be provided for UE simultaneously.Component carrier can adopt the carrier wave of compatible LTE system, and this carrier wave is called the backward compatibility carrier wave; Component carrier also can adopt the carrier wave of incompatible existing LTE system, and this carrier wave is called non-backward compatible carrier waves, and this carrier wave can only be that Release 10 versions and above UE use.Whether carrier aggregation is continuous on frequency domain by each component carrier, can divide continuous carrier aggregation and discrete carrier aggregation, and so-called continuous carrier aggregation is meant that each component carrier is interconnective on frequency domain; Discontinuous carrier aggregation then refers to it is unconnected between each component carrier on frequency domain.Carrier aggregation by each component carrier whether in identical frequency band, the carrier aggregation and the carrier aggregation of striding frequency band (overmultiple frequency bands) that can be divided into single band (single band), so-called single carrier aggregation is meant all component carriers that participate in carrier aggregation all in same frequency band, and single carrier aggregation can be that continuous carrier aggregation also can be discontinuous carrier aggregation; The carrier aggregation that what is called is striden frequency band is meant that the component carrier that participates in carrier aggregation can be derived from different frequency bands.
In the LTE system, in order to realize or to keep uplink synchronous between subscriber equipment and the base station, the base station is according to propagation delay time transmitting time lead (the Timing Advance between base station and each subscriber equipment, abbreviate TA as) to each subscriber equipment, the opportunity that the Timing Advance that subscriber equipment sends according to the base station shifts to an earlier date or postpones uplink separately, thereby remedy the propagation delay time of subscriber equipment, make the upward signal of different user devices all within the receive window of base station, arrive the base station to the base station.After introducing carrier aggregation, support the LTE-A UE of carrier aggregation to may be simultaneously operated on a plurality of component carriers.For the discontinuous situation of component carrier, perhaps component carrier comes from the situation of different frequency bands, because each component carrier has different transmission characteristics, Timing Advance on each component carrier may be different, LTE-A UE inserts these component carriers and need initiate independently to insert at random, be that UE can initiate random access procedure (simultaneously or not simultaneously) on a plurality of carrier waves, and the random access procedure of UE on different component carriers also can be different because each component carrier inserts configuration and signal quality etc. at random, so network needs to do to insert at random for each component carrier separately to optimize.But when network wishes to implement the self-optimization function of Random Access Channel, adopt existing mechanism can only be applicable to that subscriber equipment is non-and insert a plurality of component carriers simultaneously, and only the last component carrier that inserts in a plurality of component carriers that insert is inserted at random the situation of optimization, and can't distinguish the carrier information that inserts generation at random for the situation that inserts a plurality of component carriers simultaneously, can not insert optimization at random to the component carrier except that the last component carrier that inserts for the non-situation that inserts a plurality of component carriers simultaneously.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of system and method that reports random access information in the carrier aggregation, has solved the problem that can't be optimized the access at random of any component carrier in the prior art.
In order to address the above problem, the invention provides a kind of method that reports random access information in the carrier aggregation, comprising:
Random access information when the base station initiates to insert at random on specifying component carrier by signaling indication user equipment to report;
Described subscriber equipment reports random access information on described appointment component carrier according to described signaling to the base station.
Further, the mode of the random access information when described base station initiates to insert at random on specifying component carrier by signaling indication user equipment to report is, the base station comprises access at random and reports request in the user equipment information request that sends to subscriber equipment, and carries the identification information of one or more component carriers;
Described appointment component carrier is the component carrier of identification information indication;
After described subscriber equipment is received the user equipment information request, return user equipment information response, wherein carry the random access information when inserting the pairing component carrier of described identification information to the base station.
Further, if a plurality of random access informations of user equipment to report, in any reports described a plurality of random access information in the following manner:
(a1) order according to the component carrier frequency reports described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively;
(b1) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to the time sequencing of initiating to insert at random;
(c1) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to inserting successful sequencing at random;
Carry the identification information of respective components carrier wave when (d1) reporting random access information.
Further, for fdd mode, the identification information of described component carrier is any in the following information: the frequency of upstream components carrier wave and/or the frequency of downlink component carrier, the carrier index of upstream components carrier wave and/or the carrier index of downlink component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier;
For tdd mode, the identification information of described component carrier is any in the following information: the frequency of component carrier, the carrier index of component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier.
Further, described random access information comprises one or more in the following information:
(1) sends the number of times of Access Preamble at random and the result that competition is surveyed;
(2) subscriber equipment information of access failure at random on component carrier.
Further, the information of described access failure at random comprises when inserting a component carrier number of times of access failure and/or total time delay and/or failure cause of inserting at random at random.
The present invention also provides a kind of method that reports random access information in the carrier aggregation, comprising:
The base station notifying user equipment reports the random access information when initiating to insert at random on component carrier;
After described subscriber equipment is received described notice, report the random access information of all or part of random access procedure to the base station.
Further, described base station notifying user equipment reports the mode of the random access information when initiating to insert at random on component carrier to be, the base station comprises in the user equipment information request that sends to subscriber equipment inserts the request that reports at random;
After described subscriber equipment is received the user equipment information request, return the user equipment information response, wherein carry the random access information of part or all of random access procedure to the base station.
Further, after described subscriber equipment was received described notice, in any reported described part or all of random access information in the following manner:
(a2) order according to the component carrier frequency reports described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively;
(b2) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to the time sequencing of initiating to insert at random;
(c2) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to inserting successful sequencing at random;
Carry the identification information of respective components carrier wave when (d2) reporting random access information;
(e2) report of user equipment is initiated the random access information that inserts at random at its specific cell, and described specific cell is in the component carrier that inserts of subscriber equipment.
Further, for fdd mode, the identification information of described component carrier is any in the following information: the frequency of upstream components carrier wave and/or the frequency of downlink component carrier, the carrier index of upstream components carrier wave and/or the carrier index of downlink component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier;
For tdd mode, the identification information of described component carrier is any in the following information: the frequency of component carrier, the carrier index of component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier.
Further, described random access information comprises one or more in the following information:
(1) sends the number of times of Access Preamble at random and the result that competition is surveyed;
(2) subscriber equipment information of access failure at random on component carrier.
Further, the information of described access failure at random comprises when inserting a component carrier number of times of access failure and/or total time delay and/or failure cause of inserting at random at random.
The present invention also provides a kind of system that reports random access information in the carrier aggregation, comprises base station and subscriber equipment;
Described base station is used for the random access information when initiating to insert at random on specifying component carrier by signaling indication user equipment to report;
Described subscriber equipment is used for reporting random access information on described appointment component carrier according to described signaling to the base station.
Further, random access information when described base station initiates to insert at random on specifying component carrier by signaling indication user equipment to report is meant, the base station comprises access at random and reports request in the user equipment information request that sends to subscriber equipment, and carries the identification information of one or more component carriers;
Described appointment component carrier is the component carrier of identification information indication;
After described subscriber equipment is received the user equipment information request, return user equipment information response, wherein carry the random access information when inserting the pairing component carrier of described identification information to the base station.
Further, if a plurality of random access informations of user equipment to report, in any reports described a plurality of random access information in the following manner:
(a1) order according to the component carrier frequency reports described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively;
(b1) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to the time sequencing of initiating to insert at random;
(c1) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to inserting successful sequencing at random;
Carry the identification information of respective components carrier wave when (d1) reporting random access information.
Further, for fdd mode, the identification information of described component carrier is any in the following information: the frequency of upstream components carrier wave and/or the frequency of downlink component carrier, the carrier index of upstream components carrier wave and/or the carrier index of downlink component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier;
For tdd mode, the identification information of described component carrier is any in the following information: the frequency of component carrier, the carrier index of component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier.
Further, described random access information comprises one or more in the following information:
(1) sends the number of times of Access Preamble at random and the result that competition is surveyed;
(2) subscriber equipment information of access failure at random on component carrier.
The present invention also provides a kind of system that reports random access information in the carrier aggregation, comprises base station and subscriber equipment;
Described base station is used for notifying user equipment and reports on component carrier random access information when initiating to insert at random;
Described subscriber equipment is used to receive that described notice back reports the random access information of all or part of random access procedure to the base station.
Further, described base station notifying user equipment reports the random access information when initiating to insert at random on component carrier to be meant, the base station comprises in the user equipment information request that sends to subscriber equipment inserts the request that reports at random;
After described subscriber equipment is received the user equipment information request, return the user equipment information response, wherein carry the random access information of part or all of random access procedure to the base station.
Further, after described subscriber equipment was received described notice, in any reported described part or all of random access information in the following manner:
(a2) order according to the component carrier frequency reports described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively;
(b2) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to the time sequencing of initiating to insert at random;
(c2) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to inserting successful sequencing at random;
Carry the identification information of respective components carrier wave when (d2) reporting random access information;
(e2) report of user equipment is initiated the random access information that inserts at random at its specific cell, and described specific cell is in the component carrier that inserts of subscriber equipment.
Further, for fdd mode, the identification information of described component carrier is any in the following information: the frequency of upstream components carrier wave and/or the frequency of downlink component carrier, the carrier index of upstream components carrier wave and/or the carrier index of downlink component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier;
For tdd mode, the identification information of described component carrier is any in the following information: the frequency of component carrier, the carrier index of component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier.
Further, described random access information comprises one or more in the following information:
(1) sends the number of times of Access Preamble at random and the result that competition is surveyed;
(2) subscriber equipment information of access failure at random on component carrier.
In sum, the invention provides a kind of system and method that reports random access information in the carrier aggregation, terminal can report the random access information of any one random access procedure, make the base station to have improved and to have inserted the accuracy of optimizing at random according to the optimization of access at random of the parameter information of user equipment to report to the respective component carrier wave.
Description of drawings
Fig. 1 is for obtaining the schematic flow sheet of random access information in the prior art;
The network topology schematic diagram of LTE Advance system in Fig. 2 prior art;
Fig. 3 is the method flow diagram of mode one of the present invention;
Fig. 4 is the method flow diagram of mode two of the present invention.
Embodiment
System embodiment
Embodiment one
Present embodiment provides a kind of system that reports random access information in the carrier aggregation, comprises base station and subscriber equipment;
The base station is used for the random access information when initiating to insert at random on specifying component carrier by signaling indication user equipment to report;
Subscriber equipment is used for reporting the random access information of specifying on the component carrier to the base station according to above-mentioned signaling.
Particularly, random access information when the base station initiates to insert at random on specifying component carrier by signaling indication user equipment to report is meant, the base station comprises access at random and reports request in the user equipment information request that sends to subscriber equipment, and carries the identification information of one or more component carriers;
Specifying component carrier is the component carrier of identification information indication;
After subscriber equipment is received the user equipment information request, return user equipment information response, wherein carry the random access information when inserting the pairing component carrier of described identification information to the base station.
If a plurality of random access informations of user equipment to report, in any reports a plurality of random access informations in the following manner:
(a1) initiate the random access information that inserts at random at each component carrier according to the order of component carrier frequency report of user equipment successively;
(b1) initiate the random access information of access at random according to the time sequencing of initiating to insert at random report of user equipment successively at each component carrier;
(c1) according to insert at random successful sequencing successively report of user equipment initiate the random access information of access at random at each component carrier;
Carry the identification information of respective components carrier wave when (d1) reporting random access information.
Embodiment two
Present embodiment provides a kind of system that reports random access information in the carrier aggregation, comprises base station and subscriber equipment;
The base station is used for notifying user equipment and reports on component carrier random access information when initiating to insert at random;
Subscriber equipment is used to receive the random access information that reports all or part of random access procedure after the above-mentioned notice to the base station.
Particularly, the base station notifying user equipment reports the random access information when initiating to insert at random on component carrier to be meant, the base station comprises in the user equipment information request that sends to subscriber equipment inserts the request that reports at random; After subscriber equipment is received the user equipment information request, return the user equipment information response, wherein carry the random access information of part or all of random access procedure to the base station.
After subscriber equipment was received above-mentioned notice, in any reported described part or all of random access information in the following manner:
(a2) initiate the random access information that inserts at random at each component carrier according to the order of component carrier frequency report of user equipment successively;
(b2) initiate the random access information of access at random according to the time sequencing of initiating to insert at random report of user equipment successively at each component carrier;
(c2) according to insert at random successful sequencing successively report of user equipment initiate the random access information of access at random at each component carrier;
Carry the identification information of respective components carrier wave when (d2) reporting random access information;
(e2) report UE to initiate the random access information that inserts at random at its specific cell, this specific cell is in the component carrier that inserts of subscriber equipment.
Among the foregoing description one and the embodiment two,
For fdd mode, the identification information of component carrier is any in the following information: the frequency of upstream components carrier wave and/or the frequency of downlink component carrier, the carrier index of upstream components carrier wave and/or the carrier index of downlink component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier;
For tdd mode, the identification information of component carrier is any in the following information: the frequency of component carrier, the carrier index of component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier.
Random access information comprises one or more in the following information:
(1) sends the number of times of Access Preamble at random and the result that competition is surveyed;
(2) subscriber equipment information of access failure at random on component carrier.
The information of access failure comprises when inserting a component carrier number of times of access failure and/or total time delay and/or failure cause of inserting at random at random at random.
Method embodiment
Present embodiment also provides a kind of method that reports random access information in the carrier aggregation, comprise: if UE has initiated a plurality of accesses at random, base station indication UE reports the random access information when initiating to insert at random on component carrier, UE reports random access information according to indication when UE information response is returned in the base station.
Particularly, can adopt following dual mode to realize the inventive method
Mode one:
If subscriber equipment has been initiated a plurality of accesses at random, base station explicit indication UE reports random access information; Concrete steps comprise as shown in Figure 3:
Step 301: the base station sends the UE information request to UE, comprise to insert at random in the UE information request to report request (be about to rachReportReq and be set to True), and indication UE reports at the random access information of specifying component carrier;
In this step, it can be to carry the identification information of one or more component carriers that indication UE reports the mode at the random access information of specifying component carrier, and specifying component carrier is the component carrier of identification information indication.
Step 302:UE receives the UE information request, return UE information response according to indication wherein to the base station, because of wherein carrying the identification information of component carrier, therefore in UE information response, be carried at the random access information of specifying on the component carrier, i.e. random access information on the component carrier of identification information correspondence.
In the mode one, if UE reports a plurality of random access informations, any in can be in the following manner reports a plurality of random access informations:
(a1) order according to the component carrier frequency reports UE to initiate the random access information that inserts at random at each component carrier successively;
(b1) report UE to initiate the random access information that inserts at random at each component carrier successively according to the time sequencing of initiating to insert at random;
(c1) report UE to initiate the random access information that inserts at random at each component carrier successively according to inserting successful sequencing at random;
Carry the identification information of respective components carrier wave when (d1) reporting random access information.
System can set in advance the mode that reports a plurality of random access informations, also can notify UE to report the mode of a plurality of random access informations by the base station.
Mode two:
If subscriber equipment has been initiated a plurality of accesses at random, implicit expression indication UE reported random access information when the base station sent the UE information request to UE; Concrete steps comprise as shown in Figure 4:
Step 401: the base station sends the UE information request to UE, comprises to insert at random in the UE information request to report request (be about to rachReportReq and be set to True), but does not carry the identification information of any component carrier;
After step 402:UE receives the UE information request, return UE information response according to indication wherein to the base station, report request because of wherein comprising to insert at random, but do not comprise the identification information of any component carrier, then UE reports the random access information of part or all of random access procedure.
In the mode two, UE any in can be in the following manner reports part or all of random access information:
(a2) order according to the component carrier frequency reports UE to initiate the random access information that inserts at random at each component carrier successively;
(b2) report UE to initiate the random access information that inserts at random at each component carrier successively according to the time sequencing of initiating to insert at random;
(c2) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to inserting successful sequencing at random;
Carry the identification information of respective components carrier wave when (d2) reporting random access information;
(e2) report UE to initiate the random access information that inserts at random at its specific cell, this specific cell is in the component carrier that inserts of subscriber equipment, as Serving cell or anchor sub-district, this specific cell can be the base station appointment and pass through signaling UE, or system is provided with specific cell according to predefined mode.
In the mode two, system can set in advance the mode that reports random access information, also can notify UE to report the mode of random access information by the base station.
In mode one and the mode two, the base station also can report at the random access information of specifying on the component carrier by other signaling indications UE, and do not notify by the UE information request that sends, UE also can report the random access information of part or all of random access procedure by other signalings, and do not report by UE information response, the present invention does not limit this.
In mode one and the mode two, for fdd mode, the identification information of component carrier is any in the following information: the frequency of upstream components carrier wave and/or the frequency of downlink component carrier, the carrier index of upstream components carrier wave and/or the carrier index of downlink component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier;
For tdd mode, the identification information of component carrier is any in the following information: the frequency of component carrier, the carrier index of component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier.
The random access information that reports comprises one or more in the following information: (1) sends the number of times of Access Preamble at random and the result that competition is surveyed; (2) UE information of access failure at random on component carrier.
The information of access failure comprises when inserting a component carrier number of times of access failure and/or total time delay and/or failure cause of inserting at random at random at random.
The above-mentioned access at random comprises inserting at random and/or non-competing access at random based on competition.
Below further describe the present invention by several examples of application
Application example one
In LTE Advance system, adopt the network architecture as shown in Figure 2.Jurisdiction district, base station 1 is the sub-district (in the present invention, the carrier aggregation sub-district is meant the sub-district with carrier aggregation function, and promptly a carrier aggregation sub-district is made up of a plurality of component carriers) of carrier aggregation, and UE is in idle condition in sub-district 1.Here, any one eNB or any one Home eNodeB among base station general reference Fig. 1.Interface between eNB and the core network is the S1 interface, and wherein, the interface between eNB and the core net can be divided into two parts, and a part is used to finish the chain of command function of mobile management and S1 interface; Another part is used to finish functions such as the route, transmission of user data.Link to each other by X2 interface between the eNB, X2 interface be used to finish subscriber equipment under state of activation the mobile management function and the information interaction between the eNB of equity.The component carrier that the sub-district of this carrier aggregation comprises is at frequency band 1, and promptly among the Band 1, descending have 3 continuous component carriers, that is: CC (f1), CC (f2), a CC (f3); Up also is 3 continuous component carriers, that is: CC (f4), CC (f5), CC (f6).
Sometime, UE initiates to insert at random at component carrier (UL CC (f4), DL CC (f1)), and successfully inserts the sub-district of this carrier aggregation.In this time inserting at random, the number of times of the Access Preamble at random that UE sends is 4 (numberOfPreamblesSent=4), and has detected competition (contentionDetected=True).Should use in the example, if UE has only a Serving cell (or to be called the specific sub-district of UE, anchor cell or special cell, this specific cell can be disposed by signaling by the base station, also can dispose by predefined mode, the component carrier that inserts at random for the first time as predefine UE is the specific sub-district of UE), if UE need insert more carrier wave, it is the resource carrier wave that UE looks other carrier waves.This moment UE to look current component carrier (UL CC (f4), DL CC (f1)) be Serving cell.
Spent a period of time, component carrier (UL CC (f5) has been distributed for it once more according to the business demand (also can be other reason) of UE in the base station, DL CC (f2)), because the transmission characteristic difference (promptly the Timing Advance of the component carrier of the Timing Advance of this newly assigned component carrier and Serving cell different) bigger of newly assigned component carrier with having of Serving cell, the base station is at configuration component carrier (ULCC (f5), DL CC (f2)) the indication subscriber equipment needs to initiate again to insert at random and distributed random access resource for it the time, UE initiates to insert and successfully insert at random new component carrier after receiving the configuration of new component carrier once more, upstream components carrier wave and downlink component carrier number average that this moment, UE used are 2, in this inserts at random, the number of times of the Access Preamble at random that UE sends is 3 (numberOfPreamblesSent=3), and does not detect competition (contentionDetected=False).
Base station (or being called network side) is in order to implement to insert at random optimization, send UE information request (UE Information Request) to UE, in this request, comprise and insert the request (be about to rachReportReq and be set to True) that reports at random, and indication inserts the component carrier of optimization at random in this UE information request, because initiating twice in this carrier aggregation sub-district, UE inserted at random, being located at should be with in the example, the base station increases the identification information of this component carrier in the UE information request, promptly notify UE to report the random access information of which component carrier, this identification information can be the frequency of upstream components carrier wave and/or the frequency of downlink component carrier, the carrier index of upstream components carrier wave and/or the carrier index of downlink component carrier, can also be PCI (the Physical Cell Identity of this component carrier, physical layer identifications), the perhaps CGI of component carrier (Cell Global Identity, sign of overall importance).If the identification information of the component carrier that the base station comprises in the UE information request is upstream frequency f4 and/or downstream frequency f1.
After UE receives the UE information request of sending the base station, because of comprising the identification information of the component carrier of random access procedure for the first time in the UE information request, therefore UE reports the random access information of random access procedure for the first time when the base station sends UE information response (UEInformation Response), this random access information is that the number of times of Access Preamble is at random competed the result who surveys for reaching, wherein the number of times of Access Preamble is 4 (numberOfPreamblesSent=4) at random, and the result that competition is surveyed is for detecting competition (contentionDetected=True).
After UE information response is received in the base station, be applied in the optimization that inserts at random of respective components carrier wave.The effect that the parametric statistics that the base station can be inserted at random according to this component carrier that a plurality of UE report inserts at random, and then adjust the distribution of prefix sequence sign indicating number, the prefix sequence sign indicating number number that inserts at random that is used to compete such as increase.By insert optimizing at random, UE can be inserted at random in more effective initiation, make UE turn-on time shorter or reduce the number of times that competition is surveyed.The concrete optimization that how inserts at random according to the random access information that receives can be with reference to prior art.
Need to prove that what should adopt with example is fdd mode, suitable equally for tdd mode, under tdd mode, the up-downgoing frequency is identical.Should be to occur in pairs with up-downgoing carrier wave in the example, in fact, carrier aggregation also can be applicable to asymmetrical scene, as descending 4 component carriers, up 2 component carriers, for asymmetric scene, the identification information of only indicating the upstream components carrier wave is incomplete, need indicate the identification information of upstream components carrier wave and the identification information of downlink component carrier simultaneously, perhaps the identification information of indicating downlink component carrier only.
Application example two
In LTE Advance system, adopt the network architecture as shown in Figure 2.Jurisdiction district, base station 1 is the sub-district of carrier aggregation, and UE is in idle condition in sub-district 1.The component carrier that the sub-district of this carrier aggregation comprises is at frequency band 1 and frequency band 2, and in Band 1, descending have 3 continuous component carriers, that is: CC (f1), CC (f2), a CC (f3); Up also is 3 continuous carrier waves, that is: CC (f5), CC (f6), CC (f7).In Band 2, also has a pair of component carrier: descending CC (f4), up CC (f8).Four equal transmitting system message of descending carrier, beep-page message.
Sometime, UE initiates to insert at random at component carrier (UL CC (f5), DL CC (f1)), and successfully inserts the sub-district of this carrier aggregation.In this time inserting at random, the number of times of the Access Preamble at random that UE sends is 3 (numberOfPreamblesSent=3), and has detected competition (contentionDetected=True).Should be with in the example, UE has only a Serving cell (or being called the specific sub-district of UE, anchor cell or special cell), if UE need insert more carrier wave, it is the resource carrier wave that UE looks other carrier waves.This moment UE to look current component carrier (UL CC (f5), DL CC (f1)) be Serving cell.
Spent a period of time, component carrier (ULCC (f6) has been distributed for it once more according to the business demand of UE in the base station, DL CC (f2)), because the transmission characteristic of newly assigned component carrier and identical (promptly the Timing Advance of the component carrier of the Timing Advance of this newly assigned component carrier and Serving cell is identical) of Serving cell, the base station is at configuration component carrier (UL CC (f6), DL CC (f2)) the indication subscriber equipment does not need to initiate to insert at random the time, UE receives needn't initiate to insert at random after the configuration of new component carrier and can directly use this component carrier that upstream components carrier wave and downlink component carrier number average that this moment, UE used are 2.
Increasing along with the UE traffic carrying capacity, component carrier (UL CC (f8) has been distributed for UE again in the base station, DL CC (f4)), because the transmission characteristic of newly assigned component carrier and different (promptly the Timing Advance of the component carrier of the Timing Advance of this newly assigned component carrier and Serving cell is different) of Serving cell, the base station is at configuration component carrier (UL CC (f8), DL CC (f4)) the indication subscriber equipment need initiate to insert at random and distributed random access resource for it the time, UE initiates to insert at random after receiving the configuration of new component carrier, after this inserted success at random, UE can use this component carrier.Upstream components carrier wave and downlink component carrier number average that this moment, UE used are 3, in this inserts at random, the transmission that UE the sends number of times of Access Preamble at random is 3 (numberOfPreamblesSent=3), and does not detect competition (contentionDetected=False).
The base station sends UE information request (UE InformationRequest) in order to implement to insert at random optimization to UE, comprises to insert the request (be about to rachReportReq and be set to True) that reports at random in this request.
After UE receives the UE information request of sending the base station, send UE information response to the base station, because of not comprising the identification information of component carrier in this UE information request, the random access information of UE one of them random access procedure of portability in UE information response, also can carry two random access informations that insert at random, if UE has carried the information that inserts at random this twice in UE information response, the mode of carrying can be to report these two random access informations that insert at random by the sequencing that inserts at random (or inserting successful sequencing at random), for the random access procedure first time, its random access information is that numberOfPreamblesSent is 3, and contentionDetected is True; For the random access procedure second time, its random access information is that numberOfPreamblesSent is 3, and contentionDetected is False.
After UE information response is received in the base station, be applied in the optimization that inserts at random of respective components carrier wave.The effect that the parametric statistics that the base station can be inserted at random according to this component carrier that a plurality of UE report inserts at random, and then adjust the distribution of prefix sequence sign indicating number, the prefix sequence sign indicating number number that inserts at random that is used to compete such as increase.By insert optimizing at random, UE can be inserted at random in more effective initiation, make UE turn-on time shorter or reduce the number of times that competition is surveyed.
Should be with in the example, the sequencing that UE inserts at random according to initiation in the random access information that reports has reported the random access information on two component carriers, after receiving, the base station can determine to insert at random corresponding component carrier information according to sequencing, UE also can carry the identification information that inserts the respective components carrier wave at random in the UE information response that reports, UE can adopt the frequency information of component carrier, the perhaps index of component carrier (Carrier Index), the perhaps physical layer identifications PCI of component carrier (PhysicalCell Identity), perhaps the sign CGI of overall importance (Cell Global Identity) of component carrier identifies component carrier.Present embodiment adopts the mode of acquiescence (or implicit expression or predefine) to report the result who inserts at random, UE also can list UE successively according to the height (or from low to high) of frequency and initiate the result that inserts at random or UE at each component carrier and list the information that UE initiates to insert at random at each component carrier (comprise the number of times that sends Access Preamble at random and whether detected competition) successively according to the priority (or from back to front) of initiating to insert at random, and perhaps UE reports the random access information on the specific cell of UE.
Application example three
In LTE Advance system, adopt the network architecture as shown in Figure 2.Jurisdiction district, base station 1 is the sub-district of carrier aggregation, and UE is in idle condition in sub-district 1.The component carrier that the sub-district of this carrier aggregation comprises is at frequency band 1 and frequency band 2, and in Band 1, descending have 3 continuous component carriers, that is: CC (f1), CC (f2), a CC (f3); Up also is 3 continuous carrier waves, that is: CC (f5), CC (f6), CC (f7).In Band 2, also has a pair of component carrier: descending CC (f4), up CC (f8).Four equal transmitting system message of descending carrier, beep-page message.
Sometime, UE initiates to insert at random at component carrier (UL CC (f5), DL CC (f1)), successfully inserts the sub-district of this carrier aggregation.In this time inserting at random, the number of times of the Access Preamble at random that UE sends is 5 (numberOfPreamblesSent=5), and has detected competition (contentionDetected=True).Should use in the example, UE can have a plurality of Serving cells, if UE need insert more carrier wave, UE looks these a plurality of carrier waves and is Serving cell.This moment UE to look current component carrier (UL CC (f5), DL CC (f1)) be Serving cell.
Spent a period of time, component carrier (ULCC (f6) has been distributed for it once more according to the business demand of UE in the base station, DL CC (f2)), because the transmission characteristic of newly assigned component carrier is different with Serving cell, the base station is at configuration component carrier (UL CC (f6), DL CC (f2)) indication needs to initiate to insert at random and distributed random access resource the time, UE initiates to insert at random after receiving the configuration of new component carrier, in current random access procedure, insert for the first time unsuccessful at random: promptly UE sends at random that the number of times of Access Preamble surpasses default maximum, UE initiates to insert at random once more, the success of initiating at this component carrier of access at random for the second time, in inserting at random for the second time, the number of times of the Access Preamble at random that UE sends is 3 (numberOfPreamblesSent=3), and having detected competition (contentionDetected=True), upstream components carrier wave and downlink component carrier number average that this moment, UE used are 2.
The base station sends UE information request (UE InformationRequest) in order to implement to insert at random optimization to UE, comprises the request (rachReportReq is set to True) that reports that inserts at random in this request.
After UE receives the UE information request of sending the base station, send UE information response (UEInformation Response) to the base station, because of not comprising the identification information of component carrier in the UE information request, the random access information of UE one of them random access procedure of portability in UE information response, also can carry two random access informations that insert at random, if UE carries two random access informations that insert at random, the mode of carrying can be to carry the identification information and the corresponding random access information of the component carrier of each random access procedure, for first random access procedure, the identification information of its component carrier is UL CC (f5) and/or DL CC (f1), random access information is that numberOfPreamblesSent is 5, and contentionDetected is True; For second random access procedure, the identification information of its component carrier is UL CC (f6) and/or DL CC (f2), random access information is that numberOfPreamblesSent is 3, contentionDetected is True, and the information of access failure at random, this at random the information of access failure can be the unsuccessful number of times (herein being 1) that inserts at random, total time delay (inserting total time delay at random) that inserts at random, and the reason of access failure at random at this component carrier.
After UE information response is received in the base station, be applied in the optimization that inserts at random of respective components carrier wave.The effect that the parametric statistics that the base station can be inserted at random according to this component carrier that a plurality of UE report inserts at random, and then adjust the distribution of prefix sequence sign indicating number, the prefix sequence sign indicating number number that inserts at random that is used to compete such as increase.By insert optimizing at random, UE can be inserted at random in more effective initiation, make UE turn-on time shorter or reduce the number of times that competition is surveyed.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (22)
1. method that reports random access information in the carrier aggregation comprises:
Random access information when the base station initiates to insert at random on specifying component carrier by signaling indication user equipment to report;
Described subscriber equipment reports random access information on described appointment component carrier according to described signaling to the base station.
2. the method for claim 1 is characterized in that:
The mode of the random access information when described base station initiates to insert at random on specifying component carrier by signaling indication user equipment to report is, the base station comprises access at random and reports request in the user equipment information request that sends to subscriber equipment, and carries the identification information of one or more component carriers;
Described appointment component carrier is the component carrier of identification information indication;
After described subscriber equipment is received the user equipment information request, return user equipment information response, wherein carry the random access information when inserting the pairing component carrier of described identification information to the base station.
3. method as claimed in claim 1 or 2 is characterized in that:
If a plurality of random access informations of user equipment to report, in any reports described a plurality of random access information in the following manner:
(a1) order according to the component carrier frequency reports described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively;
(b1) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to the time sequencing of initiating to insert at random;
(c1) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to inserting successful sequencing at random;
Carry the identification information of respective components carrier wave when (d1) reporting random access information.
4. method as claimed in claim 2 is characterized in that:
For fdd mode, the identification information of described component carrier is any in the following information: the frequency of upstream components carrier wave and/or the frequency of downlink component carrier, the carrier index of upstream components carrier wave and/or the carrier index of downlink component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier;
For tdd mode, the identification information of described component carrier is any in the following information: the frequency of component carrier, the carrier index of component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier.
5. method as claimed in claim 1 or 2 is characterized in that:
Described random access information comprises one or more in the following information:
(1) sends the number of times of Access Preamble at random and the result that competition is surveyed;
(2) subscriber equipment information of access failure at random on component carrier.
6. method as claimed in claim 5 is characterized in that:
The information of described access failure at random comprises when inserting a component carrier number of times of access failure and/or total time delay and/or failure cause of inserting at random at random.
7. method that reports random access information in the carrier aggregation comprises:
The base station notifying user equipment reports the random access information when initiating to insert at random on component carrier;
After described subscriber equipment is received described notice, report the random access information of all or part of random access procedure to the base station.
8. method as claimed in claim 7 is characterized in that:
Described base station notifying user equipment reports the mode of the random access information when initiating to insert at random on component carrier to be, the base station comprises in the user equipment information request that sends to subscriber equipment inserts the request that reports at random;
After described subscriber equipment is received the user equipment information request, return the user equipment information response, wherein carry the random access information of part or all of random access procedure to the base station.
9. as claim 7 or 8 described methods, it is characterized in that:
After described subscriber equipment was received described notice, in any reported described part or all of random access information in the following manner:
(a2) order according to the component carrier frequency reports described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively;
(b2) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to the time sequencing of initiating to insert at random;
(c2) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to inserting successful sequencing at random;
Carry the identification information of respective components carrier wave when (d2) reporting random access information;
(e2) report of user equipment is initiated the random access information that inserts at random at its specific cell, and described specific cell is in the component carrier that inserts of subscriber equipment.
10. method as claimed in claim 9 is characterized in that:
For fdd mode, the identification information of described component carrier is any in the following information: the frequency of upstream components carrier wave and/or the frequency of downlink component carrier, the carrier index of upstream components carrier wave and/or the carrier index of downlink component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier;
For tdd mode, the identification information of described component carrier is any in the following information: the frequency of component carrier, the carrier index of component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier.
11., it is characterized in that as claim 7 or 8 described methods:
Described random access information comprises one or more in the following information:
(1) sends the number of times of Access Preamble at random and the result that competition is surveyed;
(2) subscriber equipment information of access failure at random on component carrier.
12. method as claimed in claim 11 is characterized in that:
The information of described access failure at random comprises when inserting a component carrier number of times of access failure and/or total time delay and/or failure cause of inserting at random at random.
13. a system that reports random access information in the carrier aggregation comprises base station and subscriber equipment; It is characterized in that:
Described base station is used for the random access information when initiating to insert at random on specifying component carrier by signaling indication user equipment to report;
Described subscriber equipment is used for reporting random access information on described appointment component carrier according to described signaling to the base station.
14. system as claimed in claim 13 is characterized in that:
Random access information when described base station initiates to insert at random on specifying component carrier by signaling indication user equipment to report is meant, the base station comprises access at random and reports request in the user equipment information request that sends to subscriber equipment, and carries the identification information of one or more component carriers;
Described appointment component carrier is the component carrier of identification information indication;
After described subscriber equipment is received the user equipment information request, return user equipment information response, wherein carry the random access information when inserting the pairing component carrier of described identification information to the base station.
15., it is characterized in that as claim 13 or 14 described systems:
If a plurality of random access informations of user equipment to report, in any reports described a plurality of random access information in the following manner:
(a1) order according to the component carrier frequency reports described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively;
(b1) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to the time sequencing of initiating to insert at random;
(c1) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to inserting successful sequencing at random;
Carry the identification information of respective components carrier wave when (d1) reporting random access information.
16. system as claimed in claim 14 is characterized in that:
For fdd mode, the identification information of described component carrier is any in the following information: the frequency of upstream components carrier wave and/or the frequency of downlink component carrier, the carrier index of upstream components carrier wave and/or the carrier index of downlink component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier;
For tdd mode, the identification information of described component carrier is any in the following information: the frequency of component carrier, the carrier index of component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier.
17., it is characterized in that as claim 13 or 14 described systems:
Described random access information comprises one or more in the following information:
(1) sends the number of times of Access Preamble at random and the result that competition is surveyed;
(2) subscriber equipment information of access failure at random on component carrier.
18. a system that reports random access information in the carrier aggregation comprises base station and subscriber equipment; It is characterized in that:
Described base station is used for notifying user equipment and reports on component carrier random access information when initiating to insert at random;
Described subscriber equipment is used to receive that described notice back reports the random access information of all or part of random access procedure to the base station.
19. system as claimed in claim 18 is characterized in that:
Described base station notifying user equipment reports the random access information when initiating to insert at random on component carrier to be meant, the base station comprises in the user equipment information request that sends to subscriber equipment inserts the request that reports at random;
After described subscriber equipment is received the user equipment information request, return the user equipment information response, wherein carry the random access information of part or all of random access procedure to the base station.
20., it is characterized in that as claim 18 or 19 described systems:
After described subscriber equipment was received described notice, in any reported described part or all of random access information in the following manner:
(a2) order according to the component carrier frequency reports described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively;
(b2) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to the time sequencing of initiating to insert at random;
(c2) report described subscriber equipment to initiate the random access information that inserts at random at each component carrier successively according to inserting successful sequencing at random;
Carry the identification information of respective components carrier wave when (d2) reporting random access information;
(e2) report of user equipment is initiated the random access information that inserts at random at its specific cell, and described specific cell is in the component carrier that inserts of subscriber equipment.
21. system as claimed in claim 20 is characterized in that:
For fdd mode, the identification information of described component carrier is any in the following information: the frequency of upstream components carrier wave and/or the frequency of downlink component carrier, the carrier index of upstream components carrier wave and/or the carrier index of downlink component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier;
For tdd mode, the identification information of described component carrier is any in the following information: the frequency of component carrier, the carrier index of component carrier, the physical-layer cell identifier of component carrier, the sign of overall importance of component carrier.
22., it is characterized in that as claim 18 or 19 described systems:
Described random access information comprises one or more in the following information:
(1) sends the number of times of Access Preamble at random and the result that competition is surveyed;
(2) subscriber equipment information of access failure at random on component carrier.
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| CN201010121136XA CN102149163A (en) | 2010-02-05 | 2010-02-05 | System and method for reporting random access information in carrier polymerization |
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| CN201010121136XA CN102149163A (en) | 2010-02-05 | 2010-02-05 | System and method for reporting random access information in carrier polymerization |
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