CN102202362B - A kind of allocating incremental signaling and device - Google Patents
A kind of allocating incremental signaling and device Download PDFInfo
- Publication number
- CN102202362B CN102202362B CN201010143586.9A CN201010143586A CN102202362B CN 102202362 B CN102202362 B CN 102202362B CN 201010143586 A CN201010143586 A CN 201010143586A CN 102202362 B CN102202362 B CN 102202362B
- Authority
- CN
- China
- Prior art keywords
- component carrier
- target
- source
- carrier wave
- switching command
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses allocating incremental signaling when a kind of multicarrier switches and device, can effectively reduce idle wireless resource expense.Described allocating incremental signaling comprises: when multicarrier switches, source base station sends handover request to target BS, after target BS receives described handover request, when configuring target component carrier, with at least one source component carrier for target component carrier wave described in reference configuration.Adopt the method for the invention and device, effectively can reduce the byte overhead of switching command when multicarrier switches, improve the utilance of idle wireless resource, simultaneously because the size of switching command reduces, the packet loss eating dishes without rice or wine to send switching command reduces, thus the failed probability of switching command transmission also reduces, greatly to the business experience that user is good.
Description
Technical field
The present invention relates to the communications field, be specifically related to a kind of allocating incremental signaling and device.
Background technology
Advanced long-term evolution system (LongTermEvolutionAdvance, referred to as LTE-A) propose carrier aggregation technology (CarrierAggregation, referred to as CA), it can for having the UE (UserEquipment of respective capabilities, subscriber equipment) larger bandwidth is provided, and improve the peak rate of UE.Long evolving system (LongTermEvolution, referred to as LTE) in, the maximum downstream transmission bandwidth of system support is 20MHz, and in LTE-A, can by the component carrier (componentcarriers of two or more by carrier aggregation, referred to as CC) be aggregating to support to be greater than 20MHz, the maximum transmission bandwidth being no more than 100MHz, Fig. 1 is the schematic diagram of carrier aggregation in lte-a system (upstream or downstream).
Component carrier can use the defined frequency range of LTE, also can use the frequency range for LTE-A increases newly specially.Whether continuous on frequency domain by each component carrier, carrier aggregation can be divided into continuous print carrier aggregation and discrete carrier aggregation.By each component carrier whether in identical frequency band, carrier aggregation can be divided into the carrier aggregation of single band (singleband) and the carrier aggregation across frequency band (overmultiplefrequencybands), so-called single carrier aggregation refers to that all component carriers participating in carrier aggregation are all in same frequency band, and single carrier aggregation can be continuous print carrier aggregation also can be discrete carrier aggregation; The so-called carrier aggregation across frequency band refers to that the component carrier participating in carrier aggregation can be derived from different frequency bands.The LTE-AUE with carrier aggregation capacity sets up RRC (RadioResourceControl on one-component carrier wave, wireless heterogeneous networks) connect after, base station can increase for it component carrier that other can carry out carrier aggregation, namely UE can simultaneously transceiving data on multiple (maximum 5) component carrier, and LTEUE can only on the component carrier of a compatible LTE transceiving data.
RRC (the RadioResourceControl of LTE system, wireless heterogeneous networks) layer is responsible for UE and eNB (EvolvedNodeB, evolved base station) between the RRM of wave point, comprise eNB transmitting system message, beep-page message to UE, realize the RRC connection establishment between UE and eNB, maintain and delete, mobile management realizing UE etc. function.RRC is when carrying out RRM, eNB sends to the descending RRC information of UE to be by PDCCH (PhysicalDownlinkControlChannel, Physical Downlink Control Channel) the descending PDSCH (PhysicalDownlinkSharedChannel of dynamic dispatching, Physical Downlink Shared Channel) after resource, dispatched PDSCH resource sends to UE's.Therefore, in order to reduce the PDSCH resource overhead of descending RRC information, in LTE system, the transmission of descending RRC information takes the mode that increment signaling (deltasignalling) configures.
In a wireless communication system, air interface transmission signaling generally adopts ASN.1 (AbstractSyntaxNotationOne, abstract syntax notation one) encode, in order to meet the problem of edition compatibility in ASN.1 coding, allow optional (Optional) field to exist.In order to reduce the interface-free resources expense of RRC information in LTE system, reduce the size of RRC information, the Optional field taking full advantage of ASN.1 carries out increment signal deployment as far as possible.Concrete, when LTE system carries out the ASN.1 Coding and description of RRC downstream message, by increasing agreement mark to the Optional field of ASN.1, eNB and UE is according to the Optional field in the descending RRC information of described agreement mark process, thus reach increment signal deployment, reduce the byte-sized of RRC information, save the object of interface-free resources expense.The advantage that increment signal deployment brings at handoff procedure is especially obvious, in a lot of situation, switching decision is made in base station is because UE is too poor at cell-of-origin signal quality, because the signal quality of cell-of-origin is too poor, if switching command is too large, increase UE and do not receive the possibility that switching command causes business to be hung up, when therefore switching, adopt increment signal deployment mode particularly important.
Illustrate that the agreement of several Optional fields in LTE system marks to switch the switching command (being included in RRC to connect in reconfiguration message RRCConnectionReconfiguration message) that target is LTE community below:
1, NeedOP: the field of carrying NeedOP mark, if do not carry this field in descending RRC information, is described the process of this Optional field after so must receiving this message to UE in LTE protocol.
In such as switching command, the upstream bandwidth (ul-Bandwidth) of Target cell is NeedOP field, if do not carry this field in switching command, so the behavior of agreement to UE clearly states, namely upstream bandwidth equals the downlink bandwidth that sends in message, thus can save the space shared by ul-Bandwidth in switching command.
2, NeedON: the field of carrying NeedON mark, if do not carry this field in descending RRC information, so in agreement, regulation UE continues to use the presently used value of UE after receiving this message.
In such as switching command, measuring configuration field measConfig is NeedOP field, if Target cell needs configuration to configure identical to the measurement of UE configuration with the measurement of UE in cell-of-origin, then measurement configuration field can not carried in base station in switching command, after UE receives switching command, continue the measurement configuration being used in cell-of-origin, thus save the expense of this field.
3, NeedOR: agreement carries the field of NeedOR mark, if do not carry this field in descending RRC information, after so regulation UE receives this message in agreement, stops using/deletes the presently used value of UE, and/or delete the function corresponding to this field.
In such as switching command, channel quality instruction (ChannelQualityIndicator, CQI) in, aperiodicity reports pattern (cqi-ReportModeAperiodic) field to be NeedOR, if cell-of-origin is configured with this field, but the Target cell switched no longer is expected to arrange this field, then this field can not carried in base station in switching command, after UE receives switching command, stops aperiodicity CQI to report.Thus the expense of this field can be saved.
In carrier aggregation, UE may be simultaneously operated at most on 5 component carriers (can referred to as carrier wave), namely UE may be simultaneously operated at most 5 coverages that overlapping (coverage is identical, or coverage is close, or coverage is different but have overlapping region) community on, the operating carriers of these 5 communities is respectively the different component carrier of 5 of can carry out carrier aggregation, the current component carrier worked of UE can be referred to as work component carrier, and work component carrier comprises downlink working component carrier and up work component carrier.The current own base station of UE can be that UE configures a descending principal component carrier wave (DownlinkPrimaryComponentCarrier by explicit configuration or according to protocol conventions, and up principal component carrier wave (UplinkPrimaryComponentCarrier DLPCC), ULPCC), DLPCC and ULPCC is referred to as PCC.DLPCC is never by base station deexcitation, and UE needs monitoring system message on DLPCC; ULPCC is responsible for the ascending control information sending physical layer, such as to the uplink feedback of downlink data, sends uplink scheduling request, sends uplink channel status instruction etc.DLPCC and ULPCC can have corresponding relation, and namely DLPCC and ULPCC meets the duplex distance of LTE specification, and ULPCC is the up-link carrier of regulation in DLPCC system message broadcast SIB2 (SystemInformationBlock2, System information block 2); Or DLPCC and ULPCC can by base station flexible configuration, such as base station is that UE is configured with two pairs of operating carriers, be respectively DLCC1+ULCC1 and DLCC2+ULCC2, namely DLCC1+ULCC1 and DLCC2+ULCC2 can form an independently community respectively physically, in order to realize dispatching more flexibly, the DLPCC that base station configures this UE is DLCC1, ULPCC is ULCC2.Herein if no special instructions, corresponding relation is had between DLPCC and ULPCC.Except PCC, other work component carriers are configured to auxiliary component carrier (SecondaryComponentCarrier, SCC), and SCC can be activated deexcitation according to other scheduling of resource decision-makings of the size of service traffics or base station.
In carrier aggregation, base station can according to the radio signal quality of each component carrier and other radio resource management policy UE from multiple source component carrier (SourceComponentCarrier, S-CC, namely source base station administer and the component carrier that working of current UE) be switched to multiple target component carrier wave (TargetComponentCarrier, T-CC, the i.e. target BS component carrier of administering), also UE can be switched to single T-CC from multiple S-CC, or UE is switched to multiple T-CC from single S-CC.In above-mentioned handoff procedure, with LTE unlike, will there will be multiple source and/or multiple target CC in handoff procedure, on the one hand, the increment signal deployment that in LTE, single carrier is switched to single carrier cannot realize in the system of carrier aggregation; On the other hand, compare the switching command of LTE, the information entrained by switching command of carrying multiple T-CC will be more, thus cause switching command huger.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of multicarrier switch time allocating incremental signaling and device, can effectively reduce idle wireless resource expense.
For solving the problems of the technologies described above, the invention provides a kind of allocating incremental signaling, comprising:
When multicarrier switches, source base station sends handover request to target BS, after target BS receives described handover request, when configuring target component carrier, with at least one source component carrier for target component carrier wave described in reference configuration.
Further, described multicarrier switches any one that comprise in following situation: subscriber equipment (UE) is switched to multiple target component carrier wave from multiple sources component carrier; UE is switched to single target component carrier from multiple sources component carrier; UE is switched to multiple target component carrier wave from single source component carrier.
Further, described target BS with at least one source component carrier for reference configuration target component carrier wave refers to: target BS is according to the configuration parameter of the configuration parameter Offered target component carrier of at least one source component carrier described, namely, when constructing switching command, the Optional field of whether filling in target component carrier wave is determined according to the agreement mark of Optional field in the ASN.1 coding structure of switching command and the configuration parameter of at least one source component carrier described.
Further, switching command is sent to UE by source base station by described target BS, after described UE receives described switching command, the configuration parameter of the source component carrier referenced by the agreement of Optional field in the ASN.1 coding structure of switching command mark and described target BS resolves described Optional field.
Further, described target BS with at least one source component carrier for reference configuration target component carrier wave refers to: described target BS with source principal component carrier wave for all target component carrier waves of reference configuration.
Further, described target BS with at least one source component carrier for reference configuration target component carrier wave refers to: described target BS with source principal component carrier wave for reference configuration target principal component carrier wave, with target principal component carrier wave for the auxiliary component carrier of reference configuration target.
Further, described target BS with at least one source component carrier for reference configuration target component carrier wave refers to: for source component carrier with target component carrier wave frequently, described target BS with source component carrier frequently for described in reference configuration with source component carrier with target component carrier wave frequently; For the target component carrier wave with source component carrier alien frequencies, described target BS with the target component carrier wave configured or with source principal component carrier wave for reference configuration target component carrier wave.
Further, described target BS with at least one source component carrier for reference configuration target component carrier wave refers to: described target BS with the source component carrier with target component carrier pairings for target component carrier wave described in reference configuration; The unpaired message of described source component carrier and target component carrier wave sends to described target BS by described source base station, or is determined by described target BS; Described target BS also carries the unpaired message of described source component carrier and target component carrier wave in switching command.
Further, also carry the information of the Target cell that will switch in the handover request message that described source base station sends to target BS, the information of described Target cell comprises frequency information and Physical Cell Identifier, or comprises global cell identity information.
Further, the information of described Target cell also comprises the measured value of Target cell.
Further, in the mode of display or implicit expression, described target BS notifies that UE accesses the principal component carrier wave of target BS by switching command.
For solving the problems of the technologies described above, present invention also offers a kind of increment signal deployment device, comprising: handover request sending module, handover request receiver module and configuration module, wherein:
Described handover request sending module, for when multicarrier switches, sends handover request to destination end;
Described handover request receiver module, for receiving the handover request that source sends;
Described configuration module, receive the handover request of source transmission for handover request receiver module after, when configuring target component carrier, with at least one source component carrier for target component carrier wave described in reference configuration.
Adopt the method for the invention and device, effectively can reduce the byte overhead of switching command when multicarrier switches, thus improve the utilance of idle wireless resource, simultaneously because the size of switching command reduces, the packet loss eating dishes without rice or wine to send switching command reduces, thus the failed probability of switching command transmission also reduces, greatly to the business experience that user is good.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the carrier aggregation schematic diagram according to correlation technique;
Fig. 2 is the switching flowchart of LTE system;
Fig. 3 is the application schematic diagram that single S-CC is switched to many T-CC;
Fig. 4 is the application schematic diagram 1 that many S-CC are switched to single T-CC;
Fig. 5 is the application schematic diagram 2 that many S-CC are switched to single T-CC;
Fig. 6 is the application schematic diagram 1 that many S-CC are switched to many T-CC;
Fig. 7 is the application schematic diagram 2 that many S-CC are switched to many T-CC;
Fig. 8 is the application schematic diagram 3 that many S-CC are switched to many T-CC;
Fig. 9 is the schematic diagram that many S-CC are switched to many T-CC, DLPCC and ULPCC flexible configuration.
Embodiment
First introduce the flow process of switching below, the handoff procedure in subsequent embodiment is all with reference to this flow performing.
In LTE system, for the switching of X2 interface (X2 interface is the interface between base station and base station), after source base station finishes switch decision, hand-off execution process as shown in Figure 2, comprises the steps:
Step 201, source base station (S-eNB) send handover request (HandoverRequest) by X2 interface to target BS (T-eNB);
Carry the UE contextual information (UEContextinformation) of UE at source base station in handover request, in the contextual information of UE, carry the radio resource control configuration information (RRCContext) of UE at source base station.
After step 202, target BS (T-eNB) receive handover request, according to the UE carried in handover request in the context of source base station and the current resource service condition of T-eNB, for UE sets up RAB (RadioAccessBearer, RAB), and be UE allocation radio resource according to the RAB set up, and by switching request response (HandoverRequestAcknowledge), set up RAB information and the Radio Resource distributing to UE are sent to source base station;
Target BS finally needs to send to UE by switching command for the Radio Resource that UE configures, described switching command is included in RRC and connects in reconfiguration message (RRCConnectionReconfiguration), and described RRC connects the son field that reconfiguration message is above-mentioned handover request ack message.As stated in the Background Art, in order to reduce the size of switching command, target BS be the RRCContext of UE in cell-of-origin received is reference when configuring switching command, carries out increment signal deployment.
After step 203, source base station receive switching request response, target BS is configured and sends to UE to the switching command of UE by air interface;
After step 204, UE receive switching command, the information of carrying in the increment configuration rule process switching command according to background technology, then according to the configuration of switching command access target BS, access successfully to target BS transmission suitable to be connected with the RRC of handoff completion message having reshuffled message (RRCConnectionReconfigurationComplete).
It should be noted that, if do not have X2 interface directly to connect between base station, so by S1 interface (base station and core network mobility management entity (MobilityManagementEntity, MME) interface between) when switching, source base station also can be sent to target BS UE at the RRCContext of source base station by S1 interface, target BS sends to source base station configuration information by S1 mouth after carrying out increment signal deployment according to RRCContext.
The all embodiments of the present invention all switch with above switching flow.Describe the present invention program in detail by the following examples, below in all embodiments, for patent more of the present invention being described, all to switch to example between base station, it should be noted that, method described in following examples is applicable to the switching of inside of base station (namely cell-of-origin and Target cell belong to the control of same base station) too.
Inventive concept of the present invention is: when multicarrier switches, source base station sends handover request to target BS, after target BS receives described handover request, when configuring target component carrier, with at least one source component carrier for target component carrier wave described in reference configuration.
Above-mentioned multicarrier switches any one that comprise in following situation: UE is switched to multiple target component carrier wave from multiple sources component carrier; UE is switched to single target component carrier from multiple sources component carrier; UE is switched to multiple target component carrier wave from single source component carrier.
Described target BS with at least one source component carrier for reference configuration target component carrier wave refers to: target BS is according to the configuration parameter of the configuration parameter Offered target component carrier of at least one source component carrier described, namely, when constructing switching command, the Optional field of whether filling in target component carrier wave is determined according to the agreement mark of Optional field in the ASN.1 coding structure of switching command and the configuration parameter of at least one source component carrier described.
Switching command is sent to UE by source base station by described target BS, after described UE receives described switching command, the configuration parameter of the source component carrier referenced by the agreement of Optional field in the ASN.1 coding structure of switching command mark and described target BS resolves described Optional field, to know the configuration of corresponding target component carrier wave.
Preferably, target BS with at least one source component carrier for reference configuration target component carrier wave specifically comprises following several mode, correspondingly, source component carrier referenced when referenced source component carrier should configure target component carrier with target BS when UE resolves switching command is identical:
Mode one:
Described target BS with source principal component carrier wave for all target component carrier waves of reference configuration.
Mode two:
Described target BS with source principal component carrier wave for reference configuration target principal component carrier wave, with target principal component carrier wave for the auxiliary component carrier of reference configuration target.
Mode three:
For with source component carrier with target component carrier wave frequently, described target BS with source component carrier frequently for described in reference configuration with source component carrier with target component carrier wave frequently;
For the target component carrier wave with source component carrier alien frequencies, described target BS with the target component carrier wave configured or with source principal component carrier wave for reference configuration target component carrier wave.
Mode four:
Described target BS with the source component carrier with target component carrier pairings for target component carrier wave described in reference configuration; The unpaired message of described source component carrier and target component carrier wave sends to described target BS by described source base station, or is determined by described target BS; Described target BS also carries the unpaired message of described source component carrier and target component carrier wave in switching command.
The increment signal deployment device realizing said method comprises: handover request sending module, handover request receiver module and configuration module, wherein:
Described handover request sending module, for when multicarrier switches, sends handover request to destination end;
Described handover request receiver module, for receiving the handover request that source sends;
Described configuration module, receive the handover request of source transmission for handover request receiver module after, when configuring target component carrier, with at least one source component carrier for target component carrier wave described in reference configuration.
Embodiment one
The present embodiment is switched to the application scenarios of many T-CC for illustration of single S-CC.S-CC as mono-in Fig. 3 is switched to shown in the application schematic diagram of many T-CC, UE work at present is on a carrier wave of source base station (S-eNB) (CC1), the community worked represents with S-CC1, certain S-eNB also may be operated in (also same in other embodiments, to repeat no more) on carrier wave CC2 as shown by dashed lines; The adjacent base station that target BS (T-eNB) is S-eNB, can be operated on carrier wave CC1 and carrier wave CC2, and carrier wave CC1 and carrier wave CC2 can carry out carrier aggregation.
When UE moves to T-eNB, the signal quality of S-CC1 is deteriorated gradually, and the signal quality of T-CC1 and T-CC2 improves gradually, and source base station makes the judgement switched to target BS, UE is switched on two carrier wave CC1 and CC2 of target BS, and Target cell represents with T-CC1 and T-CC2 respectively.
In step 201, source base station in the handover request message sending to target BS except existing information of carrying, the information (identification information of such as T-CC1 and T-CC2) of one or more Target cells that it will be switched to can also be carried, described target cell information can be frequency information (ARFCN, absolute carrier frequency number), with Physical Cell Identifier (PhysicalCellIdentity, PCI), or can be global cell identity information (E-UTRANCellGlobalIdentifier, ECGI).Preferably, described target cell information also can comprise the measured value (for target BS selects PCC to provide reference) of this Target cell, the measured value of such as RSRP or RSRQ, if community (T-CC1 with T-CC2 of the such as the present embodiment) coverage that certain target BS can carry out carrier aggregation is identical with channel transfer characteristic close in other words, the measurement result of a Target cell just can represent the every other signal quality that can carry out the community of carrier aggregation with this Target cell, then do not need in handover request to increase above-mentioned information, the present invention is all to be switched in the embodiment of many T-CC, the information of Target cell can be carried in handover request, hereinafter repeat no more, herewith illustrate.
After target BS receives the handover request message of source base station, according to entrained target cell information and other wireless resource management algorithms (RadioResourceManagement, RRM), T-CC1 is selected to be switched to the PCC of target BS as UE, target BS need in the switching command being transmitted to UE by source base station with explicit signaling (such as increase and represents the field of PCC) or conceal signaling (such as only on PCC for UE distribution special random access preamble) inform UE access target BS using T-CC1 as UE after the PCC (selection of PCC described in the present embodiment and notify that the mode of UE is applicable to other all embodiments, hereinafter repeat no more).Then target BS is according to the RRCContext of the UE received at S-CC1, configures the switching command needing to be transmitted to UE by source base station in increment signal deployment mode, and concrete configuration mode can be:
Mode 1, target P CC (T-CC1) carry out increment signal deployment as a reference with S-CC1, and then target SCC (T-CC2) carries out increment signal deployment as a reference with target P CC.
Particularly, target BS arranges the configuration parameter of T-CC1 according to the configuration parameter of S-CC1, when constructing switching command, determine whether fill in Optional field according to the agreement mark of Optional field in the ASN.1 coding structure of switching command and the configuration parameter of S-CC1.A certain configuration parameter such as in switching command is Optional field, its agreement is labeled as NeedON, and compares S-CC1, and this configuration parameter of T-CC1 can be constant, then target BS can not carry this parameter in switching command, thus reduces the byte overhead of switching command.
In addition due to the configuration of T-CC2 and the configuration of T-CC1 more close, therefore T-CC2 with T-CC1 as a reference, compare T-CC2 and carry out increment signal deployment as a reference with S-CC1, better can reduce the byte overhead of switching command, improve the utilance of idle wireless resource.Such as, when configuring the random access resource on T-CC1 and T-CC2, target BS is to distribute random access resource according to the loading condition of the current loading condition of target BS and statistics, T-CC2 and T-CC1 probably can configure identical random access resource, therefore the field that the random access resource in the ASN.1 coding structure of switching command is relevant can be defined as Optional field, and its agreement is labeled as NeedOP, and increase protocol specification, if base station does not configure this field, then use the configuration identical with target P CC, so target BS is when configuring the random access resource on T-CC2, if T-CC2 carries out increment signal deployment as a reference with S-CC1, target BS needs the field that the random access resource on configuration T-CC2 is relevant, if and T-CC2 carries out increment signal deployment as a reference with T-CC1, then target BS does not just need the field that the random access resource on configuration T-CC2 is relevant, thus better reduce the byte overhead of switching command.
After UE receives switching command, judge that T-CC1 is PCC, reference using S-CC1 as increment signal deployment when then resolving the configuration that T-CC1 in switching command is correlated with, according to the configuration of the increment configuration rule process T-CC1 described in background technology, namely for the field being set to Optional in T-CC1 configuration, UE is according to the configuration of the agreement mark process T-CC1 of corresponding Optional field, particularly, do not configure for base station and agreement is labeled as the field of NeedOP, UE is according to this field of protocol specification process; Do not configure for base station and agreement is labeled as the field of NeedON, UE continues to use the upper value configured of S-CC1; Do not configure for base station and agreement is labeled as the field of NeedOR, UE deletes the value of the original S-CC1 preserved, or stop using this field original the function of being correlated with.Reference using T-CC1 as increment signal deployment during the configuration that parsing T-CC2 is correlated with, according to the configuration of the increment configuration rule process T-CC2 described in background technology, namely UE resolves according to increment signal deployment mode identical when configuring switching command with target BS, hereinafter all embodiments all can refer to above-mentioned explanation, no longer elaborate.
Mode 2, target CC (T-CC1 and T-CC2) all carry out increment signal deployment as a reference with S-CC1.
After UE receives switching command, judge that T-CC1 is PCC, then resolve switching command according to increment signal deployment mode identical when configuring switching command with target BS.
After this, UE, according to the configuration access target BS of switching command, accesses successfully and sends handoff completion message (following all embodiments herewith illustrate, repeat no more) to target BS.
Embodiment two
The present embodiment is switched to the application scenarios of single T-CC for illustration of many S-CC, and concrete point of two kinds of scenes describe in detail.
Scene 1, target CC and one of them source CC are with frequently, and S-CC as many in Fig. 4 are switched to shown in the application schematic diagram of single T-CC, and UE work at present is on two carrier wave CC1 and CC2 of source base station, and the community worked S-CC1 and S-CC2 (PCC) represents.When UE moves to T-eNB, the signal quality of S-CC1 and S-CC2 is deteriorated gradually, and the signal quality of T-CC1 improves gradually, and source base station makes the judgement switched to target BS, and UE is switched on the carrier wave CC1 of target BS.
In step 201, source base station can carry the configuration information of UE at each cell-of-origin (S-CC1 and S-CC2) sending to the RRCContext of target BS, and with explicit signaling (such as increasing the field representing PCC) or conceal signaling (first S-CC carried in such as RRCContext) inform target BS wherein S-CC2 be the PCC of UE at source base station.Only need the method using source PCC as the reference of increment signal deployment for the situation or agreement target BS that are only switched to a T-CC, then source base station only needs to carry the configuration information of source PCC or the information of one of them S-CC in the RRCContext sending to target BS.The present invention is all to be switched to the embodiment of Target cell from many S-CC, and the S-CC information entrained by RRCContext can refer to this and illustrates, hereinafter repeats no more.
After target BS receives handover request message, according to the RRCContext information received, configure the switching command needing to be transmitted to UE by source base station in increment signal deployment mode, specifically can have following configuration mode:
Mode 1, carry out increment signal deployment as a reference with source PCC (S-CC2);
Mode 2, to carry out increment signal deployment as a reference with frequently source CC (S-CC1);
To be because fewer with the parameter needing between frequency to revise with source CC (S-CC1) carries out increment signal deployment as a reference frequently, the size of switching command can be reduced further.
After UE receives switching command, resolve switching command according to increment signal deployment mode identical when configuring switching command with target BS.
Scene 2, target CC and an equal alien frequencies of active CC, S-CC as many in Fig. 5 are switched to shown in the application schematic diagram of single T-CC.UE work at present is on two carrier wave CC1 and CC2 of source base station, and the community worked S-CC1 and S-CC2 (PCC) represents.When UE moves to T-eNB, the signal quality of S-CC1 and S-CC2 is deteriorated gradually, and the signal quality of T-CC3 improves gradually, and source base station makes the judgement switched to target BS, and UE is switched on the carrier wave CC3 of target BS.
After target BS receives handover request message, using source PCC (S-CC2) as with reference to increment configuration switching command (in other embodiments also can source SCC as with reference to configuration switching command), after UE receives switching command, resolve switching command according to increment signal deployment mode identical when configuring switching command with target BS.
Embodiment three
The present embodiment is switched to the application scenarios of many T-CC for illustration of many S-CC, and concrete point of three kinds of scenes describe in detail.
Scene 1, each target CC have with it with source CC frequently, and S-CC as many in Fig. 6 are switched to shown in the application schematic diagram of many T-CC, and UE work at present is on two carrier wave CC1 and CC2 of source base station, and the community worked S-CC1 and S-CC2 (PCC) represents.When UE moves to T-eNB, the signal quality of S-CC1 and S-CC2 is deteriorated gradually, and the signal quality of T-CC1 and T-CC2 improves gradually, and source base station makes the judgement switched to target BS, and UE is switched on T-CC1 and T-CC2.
After target BS receives handover request message, T-CC2 is selected to be switched to the PCC of target BS as UE, then according to the RRCContext received, configure the switching command needing to be transmitted to UE by source base station in increment signal deployment mode, concrete configuration mode can be:
Mode 1, target CC (T-CC1 and T-CC2) all carry out increment signal deployment as a reference with source PCC (S-CC2);
Mode 2, target P CC (T-CC2) carry out increment signal deployment as a reference with source PCC (S-CC2), and then target SCC (T-CC1) carries out increment signal deployment as a reference with target P CC again;
Mode 3, target CC carry out increment signal deployment as a reference with the same frequency source CC of correspondence respectively, and namely T-CC1 is with reference to carrying out increment signal deployment with S-CC1, and T-CC2 is with reference to carrying out increment signal deployment with S-CC2.
After UE receives switching command, resolve switching command according to increment signal deployment mode identical when configuring switching command with target BS.
Scene 2, only partial target CC and part source CC are with frequently, and S-CC as many in Fig. 7 are switched to shown in the application schematic diagram of many T-CC, and UE work at present is on two carrier wave CC1 and CC2 of source base station, and the community worked S-CC1 and S-CC2 (PCC) represents.When UE moves to T-eNB, the signal quality of S-CC1 and S-CC2 is deteriorated gradually, and the signal quality of T-CC1, T-CC2 and T-CC3 improves gradually, and source base station makes the judgement switched to target BS, and UE is switched on T-CC1, T-CC2 and T-CC3.
After target BS receives handover request message, T-CC3 is selected to be switched to the PCC of target BS as UE, then according to the RRCContext received, configure the switching command needing to be transmitted to UE by source base station in increment signal deployment mode, concrete configuration mode can be:
Mode 1, target CC (T-CC1, T-CC2 and T-CC3) all carry out increment signal deployment as a reference with source PCC (S-CC2);
Mode 2, target P CC (T-CC3) carry out increment signal deployment as a reference with source PCC (S-CC2), and then target SCC (T-CC1 and T-CC2) carries out increment signal deployment as a reference with target P CC again;
Mode 3, selects to carry out increment signal deployment as a reference with frequency source CC with target CC frequently with source CC, alien frequencies target CC selects the same frequency target CC (such as can arrange the same frequency target CC that selection first has configured) configured to carry out increment signal deployment as a reference.
In such as the present embodiment, T-CC1 and S-CC1 is with frequently, T-CC2 and S-CC2 is with frequently, the order that target BS carries out increment signal deployment is, first be with reference to carrying out increment signal deployment to T-CC1 with S-CC1, then being with reference to carrying out increment signal deployment to T-CC2 with S-CC2, is finally with reference to carrying out increment signal deployment to T-CC3 with T-CC1.In the present embodiment, first configuration configures alien frequencies CC again with frequency CC, can not limit in other embodiments.If arrange with configured first same CC frequently as reference, T-CC1 then owing to first configuring, therefore in switching command, the configuration information of T-CC1 is positioned at the first place of target CC configuration information list, can judge that T-CC1 is first same frequency target CC configured after UE receives accordingly.In other embodiments, the same frequency target CC that other also can be selected to have configured carries out increment signal deployment as a reference, as long as base station and UE appoint.
Mode 4, selects to carry out increment signal deployment as a reference with source CC frequently with target CC frequently with source CC, alien frequencies target CC selection source PCC carries out increment signal deployment as a reference.
Such as, in the present embodiment, T-CC1 is with reference to carrying out increment signal deployment with S-CC1, and T-CC2 is with reference to carrying out increment signal deployment with S-CC2, and T-CC3 is with reference to carrying out increment signal deployment with S-CC2.
After UE receives switching command, resolve switching command according to increment signal deployment mode identical when configuring switching command with target BS.
Scene 3, target CC and the equal alien frequencies of source CC, S-CC as many in Fig. 8 are switched to shown in the application schematic diagram of many T-CC, and UE work at present is on two carrier wave CC1 and CC2 of source base station, and the community worked S-CC1 and S-CC2 (PCC) represents.When UE moves to T-eNB, the signal quality of S-CC1 and S-CC2 is deteriorated gradually, and the signal quality of T-CC3 and T-CC4 improves gradually, and source base station makes the judgement switched to target BS, and UE is switched on T-CC3 and T-CC4.
After target BS receives handover request message, T-CC3 is selected to be switched to the PCC of target BS as UE, then according to the RRCContext received, configure the switching command needing to be transmitted to UE by source base station in increment signal deployment mode, concrete configuration mode can be:
Mode 1, target CC (T-CC3 and T-CC4) all carry out increment signal deployment as a reference with source PCC (S-CC2);
Mode 2, target P CC (T-CC3) carry out increment signal deployment as a reference with source PCC (S-CC2), and then target SCC (T-CC4) carries out increment signal deployment as a reference with target P CC again;
Mode 3, source base station choose the information of pairing CC, and in handover request, inform target BS, the pairing CC information that target BS chooses according to source base station carries out increment signal deployment.
Such as, the pairing CC information that source base station chooses is, T-CC3 and S-CC1 matches, T-CC4 and S-CC2 matches, after then target BS receives handover request message, carry out increment signal deployment as a reference with S-CC1 during configuration T-CC3, during configuration T-CC4, carry out increment signal deployment as a reference with S-CC2.In the manner, target BS needs in switching command, inform that each target CC of UE carries out the reference source CC of increment configuration, such as, inform by display mode.
Mode 4, target BS select source CC to carry out increment signal deployment as required flexibly, and in switching command, inform that each target CC of UE carries out the reference source CC of increment configuration, such as, inform by display mode.
Such as, in the present embodiment, carry out increment signal deployment as a reference with S-CC1 during target BS configuration T-CC3, during configuration T-CC4, carry out increment signal deployment as a reference with S-CC2.
After UE receives switching command, resolve switching command according to increment signal deployment mode identical when configuring switching command with target BS.
It should be noted that, described in above all embodiments, allocating incremental signaling is equally applicable to the situation of S-CC/T-CC more than two CC.
Embodiment four
The present embodiment by base station flexible configuration, does not have the situation of corresponding relation for illustration of DLPCC and ULPCC, and namely the increment signal deployment of DLPCC and ULPCC needs situation about processing respectively, is switched to the typical apply scene of many T-CC for many S-CC.
Target CC and the equal alien frequencies of source CC as shown in Figure 9, UE work at present is on two carrier wave CC1 and CC2 of source base station, the community worked represents with S-CC1 and S-CC2, and the DLPCC that source base station distributes to UE is the DLCC1 on S-CC1, and ULPCC is the ULCC2 on S-CC2.When UE moves to T-eNB, the signal quality of S-CC1 and S-CC2 is deteriorated gradually, and the signal quality of T-CC3 and T-CC4 improves gradually, and source base station makes the judgement switched to target BS, and UE is switched on T-CC3 and T-CC4.
After target BS receives handover request message, the DLCC3 in T-CC3 is selected to be switched to the DLPCC of target BS as UE, the ULCC4 in T-CC4 is selected to be switched to the ULPCC of target BS as UE, then according to the RRCContext received, with source PCC for needing with reference to increment signal deployment the switching command being transmitted to UE by source base station, concrete configuration mode is:
Configuration on mode 1, target downlink CC all carries out increment signal deployment as a reference with the configuration on source DLPCC (DLCC1), and the configuration on the up CC of target all carries out increment signal deployment as a reference with the configuration on the ULPCC of source;
That is: the configuration on target downlink CC and the up CC of target carries out increment signal deployment as a reference with the configuration of UE on source base station DLPCC and the configuration on ULPCC respectively.
Configuration on the source that is configured to DLPCC (DLCC1) on mode 2, target DLPCC (DLCC3) carries out increment signal deployment as a reference, and the configuration then on target DLSCC (DLCC4) carries out increment signal deployment as a reference with the configuration on target DLPCC again;
Configuration on the source that is configured to ULPCC (ULCC2) on target ULPCC (ULCC4) carries out increment signal deployment as a reference, and the configuration then on target ULSCC (ULCC3) carries out increment signal deployment as a reference with the configuration on target ULPCC again;
That is: the configuration on target DLPCC and ULPCC carries out increment signal deployment as a reference with the configuration of UE on source base station DLPCC and the configuration on ULPCC respectively, and the configuration then on target DLSCC and ULSCC is more respectively with being configured to reference to carrying out increment signal deployment on target DLPCC and target ULPCC.
Adopt above allocating incremental signaling described in each embodiment, target BS is when configuring each target CC for UE, several agreement marks to ASN.1Optional field in existing LTE system can be made full use of, reduce the byte overhead of switching command, thus improve the utilance of idle wireless resource, reduce switching command and send failed probability, to the business experience that user is good.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. an allocating incremental signaling, comprising:
When multicarrier switches, source base station sends handover request to target BS, after target BS receives described handover request, when configuring target component carrier, with at least one source component carrier for configuring described target component carrier wave with reference to increment;
Described target BS is according to the configuration parameter of the configuration parameter Offered target component carrier of at least one source component carrier described, namely, when constructing switching command, the Optional field of whether filling in target component carrier wave is determined according to the agreement mark of Optional field in the ASN.1 coding structure of switching command and the configuration parameter of at least one source component carrier described;
Described target BS accesses the principal component carrier wave of target BS with the mode notifying user equipment UE of implicit expression by switching command, the mode of described implicit expression comprises: for UE distributes special random access preamble on principal component carrier wave.
2. the method for claim 1, is characterized in that,
Described multicarrier switches any one that comprise in following situation: user equipment (UE) is switched to multiple target component carrier wave from multiple sources component carrier; UE is switched to single target component carrier from multiple sources component carrier; UE is switched to multiple target component carrier wave from single source component carrier.
3. the method for claim 1, is characterized in that,
Switching command is sent to UE by source base station by described target BS, after described UE receives described switching command, the configuration parameter of the source component carrier referenced by the agreement of Optional field in the ASN.1 coding structure of switching command mark and described target BS resolves described Optional field.
4. the method for claim 1, is characterized in that,
Described target BS with at least one source component carrier for referring to reference to increment configuration target component carrier: described target BS with source principal component carrier wave for configuring all target component carrier waves with reference to increment.
5. the method for claim 1, is characterized in that,
Described target BS with at least one source component carrier for referring to reference to increment configuration target component carrier: described target BS with source principal component carrier wave for reference to increment configuration target principal component carrier wave, with target principal component carrier wave for reference to the auxiliary component carrier of increment configuration target.
6. the method for claim 1, is characterized in that,
Described target BS refers to for configuring target component carrier with reference to increment with at least one source component carrier:
For with source component carrier with target component carrier wave frequently, described target BS with source component carrier frequently for reference to increment configuration described with source component carrier with target component carrier wave frequently;
For the target component carrier wave with source component carrier alien frequencies, described target BS with the target component carrier wave configured or with source principal component carrier wave for reference to increment configuration target component carrier.
7. the method for claim 1, is characterized in that,
Described target BS with at least one source component carrier for referring to reference to increment configuration target component carrier: described target BS with the source component carrier with target component carrier pairings for configuring described target component carrier wave with reference to increment; The unpaired message of described source component carrier and target component carrier wave sends to described target BS by described source base station, or is determined by described target BS;
Described target BS also carries the unpaired message of described source component carrier and target component carrier wave in switching command.
8. the method for claim 1, is characterized in that,
Also carry the information of the Target cell that will switch in the handover request message that described source base station sends to target BS, the information of described Target cell comprises frequency information and Physical Cell Identifier, or comprises global cell identity information.
9. method as claimed in claim 8, is characterized in that,
The information of described Target cell also comprises the measured value of Target cell.
10. an increment signal deployment device, comprising: handover request sending module, handover request receiver module and configuration module, wherein:
Described handover request sending module, for when multicarrier switches, sends handover request to destination end;
Described handover request receiver module, for receiving the handover request that source sends;
Described configuration module, receive the handover request of source transmission for handover request receiver module after, when configuring target component carrier, with at least one source component carrier for configuring described target component carrier wave with reference to increment; According to the configuration parameter of the configuration parameter Offered target component carrier of at least one source component carrier described, namely, when constructing switching command, the Optional field of whether filling in target component carrier wave is determined according to the agreement mark of Optional field in the ASN.1 coding structure of switching command and the configuration parameter of at least one source component carrier described;
Described destination end accesses the principal component carrier wave of destination end with the mode notifying user equipment UE of implicit expression by switching command, the mode of described implicit expression comprises: for UE distributes special random access preamble on principal component carrier wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010143586.9A CN102202362B (en) | 2010-03-25 | 2010-03-25 | A kind of allocating incremental signaling and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010143586.9A CN102202362B (en) | 2010-03-25 | 2010-03-25 | A kind of allocating incremental signaling and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102202362A CN102202362A (en) | 2011-09-28 |
| CN102202362B true CN102202362B (en) | 2016-04-13 |
Family
ID=44662671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010143586.9A Active CN102202362B (en) | 2010-03-25 | 2010-03-25 | A kind of allocating incremental signaling and device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102202362B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2736964T3 (en) | 2011-10-20 | 2020-01-09 | Lg Electronics Inc | Method and apparatus for transmitting control information in a wireless communication system |
| JP6259578B2 (en) * | 2013-03-25 | 2018-01-10 | 株式会社Ｎｔｔドコモ | Mobile communication method |
| WO2015192287A1 (en) * | 2014-06-16 | 2015-12-23 | Telefonaktiebolaget L M Ericsson (Publ) | Method, base station, controlling node and core network node for facilitating inter radio access technology (irat) handover |
| CN108738043B (en) * | 2017-04-25 | 2023-05-23 | 中兴通讯股份有限公司 | User equipment switching method, device and system |
| CN107396384B (en) * | 2017-08-15 | 2020-06-19 | 北京小米移动软件有限公司 | Wireless connection establishing method and device |
| CN110351786B (en) * | 2018-04-03 | 2022-06-14 | 维沃移动通信有限公司 | Configuration method, terminal and network side equipment |
| EP3912395A1 (en) | 2019-01-18 | 2021-11-24 | Telefonaktiebolaget Lm Ericsson (Publ) | Target node, user equipment, source node and methods performed thereby for handling reconfigurations of the user equipment during a conditional handover |
| WO2021007758A1 (en) * | 2019-07-15 | 2021-01-21 | Oppo广东移动通信有限公司 | Parameter acquisition methods, and device and storage medium |
| CN111800834B (en) * | 2019-08-13 | 2023-07-07 | 维沃移动通信有限公司 | Cell switching method, device, equipment and medium |
| CN114302465A (en) * | 2021-12-30 | 2022-04-08 | 中国电信股份有限公司卫星通信分公司 | Rapid link recovery and switching method based on carrier aggregation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1719742A (en) * | 2004-07-09 | 2006-01-11 | 中兴通讯股份有限公司 | Broadcasting channel protecting method for multi-carrier system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183985B (en) * | 2007-10-24 | 2010-12-08 | 中兴通讯股份有限公司 | Method and system of incremental distribution configuration command |
-
2010
- 2010-03-25 CN CN201010143586.9A patent/CN102202362B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1719742A (en) * | 2004-07-09 | 2006-01-11 | 中兴通讯股份有限公司 | Broadcasting channel protecting method for multi-carrier system |
Non-Patent Citations (1)
| Title |
|---|
| Intra-BS Carrier Handover for IEEE 802.16m;IEEE;《IEEE C802.16m-08/949r2》;20080905;1-6 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102202362A (en) | 2011-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102202362B (en) | A kind of allocating incremental signaling and device | |
| US11963030B2 (en) | Apparatus and method for measurement in wireless communication system | |
| US10555231B2 (en) | Communications system | |
| US10805928B2 (en) | Communications in a wireless network for carrier selection and switching | |
| US10631296B2 (en) | Resource allocation method, apparatus, and wireless access system | |
| EP3222079B1 (en) | Apparatus configured to report aperiodic channel state information for dual connectivity | |
| US9584274B2 (en) | Method, system and apparatus for transmitting data in carrier aggregation manner | |
| JP5602239B2 (en) | Signaling scheme for flexible carrier aggregation | |
| KR101734812B1 (en) | Mobile communication system and method for measuring carriers for multiple carriers aggregated user equipment thereof | |
| CN105898770B (en) | Empty channel detection method and node equipment | |
| US9226136B2 (en) | UE capability report method and apparatus in mobile communication system | |
| US20200252822A1 (en) | Method and apparatus for communication in next generation mobile communication system | |
| EP2884798B1 (en) | Method, system and device for cell management | |
| CN102215599B (en) | Method for determining downlink time reference | |
| US9014039B2 (en) | Method and device for performing and controlling user equipment measurement in multiple carrier aggregated mobile communication system | |
| CN104684032A (en) | Method and apparatus for performing component carrier-specific reconfiguration | |
| JP6607514B2 (en) | Air interface technology setting method, apparatus, and wireless communication system | |
| CN104782205A (en) | Method and apparatus for supporting a carrier aggregation group in a wireless communication system | |
| WO2012094963A1 (en) | Method and device for configuring cell information | |
| US20200314725A1 (en) | Method and apparatus for carrier aggregation communication in wireless communication system | |
| JPWO2016182048A1 (en) | User terminal and radio base station | |
| WO2011153887A1 (en) | Method, system and device for transmitting handover information | |
| JP2014131240A (en) | Method for controlling transmission of buffer status report, user device, and wireless communication system | |
| KR102490729B1 (en) | A method for carrier aggregation in a wireless communication system and apparatus thereof | |
| US10873958B1 (en) | Controlling PRB allocation for dual-connectivity service |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |