CN105323852A - Uplink bearing modification method and apparatus - Google Patents
Uplink bearing modification method and apparatus Download PDFInfo
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- CN105323852A CN105323852A CN201410363981.6A CN201410363981A CN105323852A CN 105323852 A CN105323852 A CN 105323852A CN 201410363981 A CN201410363981 A CN 201410363981A CN 105323852 A CN105323852 A CN 105323852A
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- 238000000034 method Methods 0.000 claims abstract description 35
- 238000011144 upstream manufacturing Methods 0.000 claims description 254
- 230000003139 buffering effect Effects 0.000 claims description 78
- 230000008859 change Effects 0.000 claims description 46
- 230000005540 biological transmission Effects 0.000 claims description 24
- 230000009977 dual effect Effects 0.000 claims description 17
- 238000005516 engineering process Methods 0.000 claims description 14
- 238000001228 spectrum Methods 0.000 claims description 12
- 239000003607 modifier Substances 0.000 claims description 6
- 230000011664 signaling Effects 0.000 claims description 6
- 230000004044 response Effects 0.000 description 23
- 230000011218 segmentation Effects 0.000 description 17
- 230000004048 modification Effects 0.000 description 12
- 238000012986 modification Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 11
- 238000005192 partition Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0064—Transmission or use of information for re-establishing the radio link of control information between different access points
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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Abstract
The invention discloses an uplink bearing modification method and an apparatus. The method comprises the following steps that a terminal in double connection receives an uplink data sending node changing command, wherein the uplink data sending node changing command indicates the terminal to send the uplink data via a second uplink data sending node instead via a first uplink data sending node; the terminal continuously sends existing parts or all the uplink data of a radio link control RLC layer and a media access control MAC layer buffer area corresponding to the first uplink data sending node in the terminal through the first uplink data sending node; the terminal wipes the uplink data of the RLC layer and the MAC layer buffer area corresponding to the first uplink data sending node.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of amending method and device of up carrying.
Background technology
Fig. 1 is the general frame schematic diagram of LTE system in prior art, as shown in Figure 1, the framework of LTE system mainly comprises: mobile management entity (MME, MobilityManagementEntity), gateway (SGW, ServingGetWay), subscriber equipment (UE, and base station (eNB, eNodeB) UserEquipment).Wherein, the interface between UE and eNB is UU interface, and the interface between eNB and MME is S1-MME (S1forthecontrolplane) interface, and the interface between eNB and SGW is S1-U interface, and the interface between two eNB is X2 interface.Here, UE also can be called terminal.
Fig. 2 be LTE in correlation technique UE and eNB between the protocol infrastructure schematic diagram in user face.In LTE, UE and eNB interface is divided into following protocol layer from the bottom up: physical layer (Physicallayer, be called for short PHY), medium education (MediaAccessControl, referred to as MAC) layer, wireless spread-spectrum technology (RadioLinkControl, referred to as RLC) layer and PDCP (PacketDataConvergenceProtocol, referred to as PDCP) layer.Wherein, PHY layer mainly through transmission channel to MAC or more high-rise transmission information; MAC layer provides transfer of data and responsible allocation of radio resources mainly through logic channel, complete hybrid automatic repeat-request (HybridARQ, be called for short HARQ), scheduling (Scheduling, be called for short SCH), the function such as processed and multiplexing and demultiplexing (Multiplexing is called for short MUX); Rlc layer mainly provides segmentation and the retransmission service of user and control data; PDCP layer mainly gives the transmission of RRC or upper strata, user face completing user data.Upstream data transmission is performed such, data are introduced into the PDCP layer buffering area of end side, then enter rlc layer buffering area, then to MAC layer, then base station is sent to by PHY layer, PHY, MAC, RLC and PDCP of base station receive successively again, and wherein, the MAC of base station receives data, can feed back to the MAC layer of terminal, the RLC of base station receives data and can respond status report to the rlc layer of terminal, and the rlc layer of terminal gives the PDCP layer status report of self, the transmission situation of notification data.
In LTE system, the process that UE sets up calling comprises: set up chain of command link between UE and eNB and the process of user face link and the process of the chain of command link set up between eNB and core net and user face link.After the calling procedure foundation of UE, chain of command data between eNB and core net are carried by the connection of setting up between the MME in eNB and core net, user face data between eNB and core net is carried by the evolution RAB (ERAB, E-UTRANRadioAccessBearer) set up between the SGW in eNB and core net; And the user face data between eNB and UE adopts Data Radio Bearer (DRB, DataRadioBearer) carry, each DRB is configured with mark, chain of command data then adopt Signaling Radio Bearer (SRB, SignallingRadioBearer) carry, each SRB is configured with mark.
Due to the scarcity of frequency spectrum resource, and the surge of the large discharge business of mobile subscriber, the demand adopting high frequency points to carry out focus covering as 3.5GHz is day by day obvious, adopts the application scenarios that lower powered node becomes new, in order that adding users throughput and enhancing travelling performance.But because the signal attenuation of high frequency points is more severe, the coverage of community is smaller is called small-cell, the base station of its ownership is called SeNB, and the base station belonged to existing community is called MeNB not co-sited point, many companies and operation commercial city are tended to seek a kind of new enhanced scheme at present, and dual link (DualConnectivity) is exactly one of them.In dual link technology, as shown in Figure 3, under dual link, terminal can simultaneously keep being connected with plural network node, but chain of command connection has with one of them community such as macrocell and is connected.Such as, UE is in the coverage of community 1 and community 2 simultaneously, community 1 attributive eNB 1 is macro base station, community 2 attributive eNB 2 is small-cell base stations, and when adopting dual link technology, UE keeps being connected as chain of command links with community 1, the link of user face can also be comprised, meanwhile, UE and community 2 keep being connected as user face links, and namely UE all sets up radio bearer with community 1 and community 2 simultaneously.In dual link, in order to carry out the load balancing between base station better, and farthest optimizing local resource, introducing partition data radio bearer, therefore, in dual link, there is partition data radio bearer and non-segmentation Data Radio Bearer.Non-data segmentation radio bearer only can be present in MeNB or SeNB, the Data Radio Bearer of one total three types, the Data Radio Bearer be only present on MeNB is called for short MeNB carrying, the Data Radio Bearer be only present on SeNB is called for short SeNB carrying, and the Data Radio Bearer be simultaneously present on MeNB and SeNB is called for short split carrying (segmentation carrying).As shown in Figure 4, to the protocol stack of segmentation carrying PDCP layer be present on MeNB, RLC and MAC, PHY layer, be present in respectively on MeNB and SeNB, in end side, corresponding, there is one deck PDCP layer, two-layer RLC, MAC and PHY layer, the data buffering managed respectively on MeNB and SeNB sends and process.For segmentation carrying, temporarily only support descending segmentation at present, upstream data is only sent by a base station, this sends base station and is specified by top signaling, simultaneously, MeNB in order to the path loss obtaining shorter time delay or SeNB little, upstream data also can send and be changed to another one base station from this base station by top signaling, when terminal receives upstream data transmission change order, terminal and old up transmission base station still there are data sending, or still there are data to prepare in the buffer to send, in this case, because upstream data can not send data to two base stations simultaneously, upstream data then may be caused to lose.
For dual link terminal in correlation technique when carrying out upstream data and sending change, how to reduce the problem that upstream data is lost, not yet propose effective solution at present.
Summary of the invention
For dual link terminal when carrying out upstream data and sending change, how to reduce the problem that upstream data is lost, the invention provides a kind of modification of up carrying, at least to solve the problem.
According to an aspect of the present invention, provide a kind of amending method of up carrying, comprise: the terminal in dual link receives upstream data sending node change order, wherein, upstream data is sent to be changed to by the first upstream data sending node and is sent by the second upstream data sending node by the described terminal of described upstream data sending node change order instruction; Described terminal continues to send the part or all of upstream data of the wireless spread-spectrum technology rlc layer corresponding with described first upstream data sending node existed in described terminal and media access control MAC layer buffering area by described first upstream data sending node; Described terminal empties the rlc layer corresponding with described first upstream data sending node and the upstream data of MAC layer buffering area.
Alternatively, corresponding with described first upstream data sending node wireless spread-spectrum technology rlc layer and the part upstream data of media access control MAC layer buffering area comprise: not yet receive the data needing in the upstream data of data that opposite end responds or described rlc layer and MAC layer buffering area to carry out retransmitting in the upstream data of described rlc layer and MAC layer buffering area.
Alternatively, described terminal empties the rlc layer corresponding with described first upstream data sending node and the upstream data of MAC layer buffering area, comprise: the timing from receiving when the change of described upstream data sending node is ordered of described terminal, when arriving to the scheduled time, empty the rlc layer corresponding with described first upstream data sending node and the upstream data of MAC layer buffering area.
Alternatively, when described terminal receives upstream data sending node change order, described method also comprises: described terminal suspends the upstream data sending PDCP PDCP layer buffering area corresponding to described first upstream data sending node; The described scheduled time, when arriving, described method also comprised: described terminal sends the successful upstream data of not yet transmission in described PDCP layer buffering area on described second upstream data sending node.
Alternatively, the described scheduled time is default value or is specified by top signaling.
Alternatively, the terminal in dual link receives upstream data sending node change order, comprising: described terminal receives the described upstream data sending node change order that described first upstream data sending node sends; Or described terminal receives the described upstream data sending node change order that described second upstream data sending node sends.
According to another aspect of the present invention, provide a kind of modifier of up carrying, comprise: receiver module, for receiving the upstream data sending node change order of the terminal sent in dual link, wherein, upstream data is sent to be changed to by the first upstream data sending node and is sent by the second upstream data sending node by the described terminal of described upstream data sending node change order instruction; Sending module, for continuing by described first upstream data sending node the part or all of upstream data sending the wireless spread-spectrum technology rlc layer corresponding with described first upstream data sending node and the media access control MAC layer buffering area existed in described terminal; Empty module, for emptying rlc layer corresponding with described first upstream data sending node in described terminal and the upstream data of MAC layer buffering area.
Alternatively, described device also comprises: timer, starts, when scheduled duration arrives, empty module described in triggering during for receiving described upstream data sending node change order at described receiver module.
Alternatively, described device also comprises: first suspends module, for when receiving upstream data sending node change order, suspends the up buffered data sending PDCP PDCP layer buffering area corresponding to described first upstream data sending node; When described sending module also arrives for described scheduled duration, described second upstream data sending node sends the successful upstream data of not yet transmission in described PDCP layer buffering area.
Alternatively, corresponding with described first upstream data sending node wireless spread-spectrum technology rlc layer and the part upstream data of media access control MAC layer buffering area comprise: not yet receive the data needing in the upstream data of data that opposite end responds or described rlc layer and MAC layer buffering area to carry out retransmitting in the upstream data of described rlc layer and MAC layer buffering area.
According to a further aspect of the invention, provide a kind of terminal, described terminal is connected with multiple network node simultaneously, and wherein, described terminal comprises above-mentioned device.
Pass through the present invention, terminal is when receiving upstream data sending node change order, continue through the part or all of upstream data that current upstream data sending node sends the already present rlc layer corresponding with this upstream data sending node and MAC layer buffering area, then the upstream data of the rlc layer corresponding with this upstream data sending node and MAC layer buffering area is emptied, thus the upstream data lost when can reduce the change of upstream data sending node.
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 general frame schematic diagram of LTE system;
Fig. 2 is the protocol infrastructure schematic diagram in user face between UE and eNB in correlation technique in LTE system;
Fig. 3 is the general frame schematic diagram of dual link system;
Fig. 4 is the protocol infrastructure schematic diagram in user face between segmentation carrying lower UE and eNB;
Fig. 5 is the flow chart of the amending method of up carrying according to the embodiment of the present invention;
Fig. 6 is the configuration diagram of the modifier of up carrying according to the embodiment of the present invention;
Fig. 7 is the flow chart of embodiment one;
Fig. 8 is the flow chart of embodiment three;
Fig. 9 is the flow chart of embodiment four.
Embodiment
Hereinafter also describe the present invention in detail with reference to accompanying drawing in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
According to the embodiment of the present invention, provide a kind of amending method of up carrying.
Fig. 5 is the flow chart of the amending method of up carrying according to the embodiment of the present invention, and as shown in Figure 5, the method mainly comprises the following steps:
Step S502, terminal in dual link receives upstream data sending node change order, wherein, upstream data is sent by the first upstream data sending node and is changed to by the second upstream data sending node by the described terminal of described upstream data sending node change order instruction.
In embodiments of the present invention, terminal is connected with multiple network node (comprising the first upstream data sending node and described second upstream data sending node) simultaneously.
In specific implementation process, upstream data sending node change order can be that the first upstream data sending node sends, and also can be that the second upstream data sending node sends.
Step S504, described terminal continues by described first upstream data sending node the part or all of upstream data sending the rlc layer corresponding with described first upstream data sending node and the MAC layer buffering area existed in described terminal
Wherein, the rlc layer corresponding with described first upstream data sending node existed in described terminal and the part upstream data of MAC layer buffering area can comprise: not yet receive the data needing in the upstream data of the data that opposite end responds, described rlc layer and MAC layer buffering area to carry out retransmitting in the upstream data of described rlc layer and MAC layer buffering area.
Step S506, described terminal empties the rlc layer corresponding with described first upstream data sending node and the upstream data of MAC layer buffering area.
In an Alternate embodiments of the embodiment of the present invention, a period of time can be reserved for sending the upstream data of wireless spread-spectrum technology (RLC) layer corresponding with described first upstream data sending node and medium education (MAC) the layer buffering area existed, described terminal from receive described upstream data sending node change order time can timing, when arriving to the scheduled time, empty the rlc layer corresponding with described first upstream data sending node and the upstream data of MAC layer buffering area.
In an Alternate embodiments of the embodiment of the present invention, when described terminal receives upstream data sending node change order, described method can also comprise: described terminal suspends the upstream data sending PDCP (PDCP) layer buffering area corresponding to described first upstream data sending node; When then the described scheduled time arrives, described method can also comprise: described terminal sends the upstream data of described PDCP layer buffering area on described second upstream data sending node.
In the Alternate embodiments of the embodiment of the present invention, after terminal receives upstream data sending node change order, original upstream data sending node can be continued through and send corresponding at original upstream data sending node RLC and the part or all of upstream data of MAC layer buffering area, the up buffered data of the PDCP layer of terminal suspends transmission, specify the duration, fixed time has arrived, the up buffered data of terminal PDCP layer and be changed to new upstream data sending node and send, empty RLC corresponding on original upstream data sending node and the upstream data of MAC layer buffering area.
Alternatively, the above-mentioned scheduled time for default value or also can be specified by top signaling.
In embodiments of the present invention, upstream data sending node can be according to terminal configuration, namely in terminal, the upstream data of all partition data radio bearers is all sent by same upstream data sending node, or send according to partition data radio bearer, namely in a terminal, the upstream data of multiple segmentation radio bearer sends and can pass through different upstream data sending nodes.
According to the embodiment of the present invention, additionally provide a kind of modifier of up carrying.
Fig. 6 is the structural representation of the modifier of up carrying according to the embodiment of the present invention, as shown in Figure 6, this device mainly comprises: receiver module 610, for receiving the upstream data sending node change order of the terminal sent in dual link, wherein, the upstream data at the first upstream data sending node is changed to the second upstream data sending node by the described terminal of described upstream data sending node change order instruction; Sending module 620, for continuing by described first upstream data sending node the part or all of upstream data sending the wireless spread-spectrum technology rlc layer corresponding with described first upstream data sending node and the media access control MAC layer buffering area existed in described terminal; Empty module 630, for emptying rlc layer corresponding with described first upstream data sending node in described terminal and the upstream data of MAC layer buffering area.
Alternatively, corresponding with described first upstream data sending node rlc layer and the part upstream data of MAC layer buffering area comprise: not yet receive the data needing in the data or described upstream data that opposite end responds to carry out retransmitting in described upstream data.
Alternatively, this device can also comprise: timer, starts, when scheduled duration arrives, empty module 630 described in triggering during for receiving described upstream data sending node change order at described receiver module.
Alternatively, described device can also comprise: first suspends module, for when receiving upstream data sending node change order, suspends the upstream data sending PDCP PDCP layer buffering area corresponding to described first upstream data sending node; When described sending module 620 also arrives for described scheduled duration, described second upstream data sending node sends the upstream data of described PDCP layer buffering area.
Alternatively, the described upstream data sending node change order that receiver module 610 receives can be that the first upstream data sending node sends, and also can be that the second upstream data sending node sends.
According to the embodiment of the present invention, additionally provide a kind of terminal, described terminal is connected with multiple upstream data sending node simultaneously, wherein, and the modifier of the up carrying that described terminal is above-mentioned.
Adopting the technical scheme that the embodiment of the present invention provides, when carrying out the change of upstream data sending node, significantly can reduce the upstream data needing to abandon.
Below by specific embodiment, the technical scheme that the embodiment of the present invention provides is described.
In following examples, base station 1 is macro base station, and have 1 community, i.e. community 1, base station 2 is small-cell base stations, You Liangge community, is respectively community 3 and community 4.The buffering area mentioned in following examples is all in terminal, namely terminal has the buffering area as RLC and MAC layer that base station 1 is relative, and the corresponding buffering area as RLC and MAC layer, base station 2, the buffering area of PDCP layer only has one, is base station 1 correspondence, as Fig. 4.
Embodiment one
In the present embodiment, terminal establishes with community 1 and is connected, be configured with community 3 simultaneously, establish Data Radio Bearer and be designated 1, Data Radio Bearer 1 is present on base station 1 and base station 2 simultaneously, it is the Data Radio Bearer of segmentation, meanwhile, base station 1 notification terminal, the upstream data of all partition data radio bearers is sent and is all undertaken by base station 1, now only have one to split wireless data carrying, upstream data sends by base station 1.
Fig. 7 is the flow chart of upstream data sending node change in the present embodiment, as shown in Figure 7, mainly comprises the following steps:
Step 701, in segmentation radio bearer upstream data sends, because base station 1 uplink load increases, base station 1 determines the upstream data of Data Radio Bearer 1 to send to move on on base station 2, sends S to base station 2
enB revises request, and this request can carry the configuration information of current data radio bearer 1 as data bearing identification, can also carry and need the upstream data of Data Radio Bearer 1 to send to be changed to base station 2 etc.
Step 702, base station 2 is according to current practice, resource is reserved to Data Radio Bearer 1, and respond SeNB amendment request response to base station 1, response can comprise following content: agree to amendment, the upstream data of Data Radio Bearer 1, as data bearing identification, sends and is changed to base station 2 etc. by the relevant configuration of Data Radio Bearer 1.
Step 703, base station 1 receives the response of base station 2, Deta bearer amendment request is sent to terminal, be included in the order of RRC reprovision, the upstream data of Data Radio Bearer 1, as data bearing identification, sends and is changed to base station 2 etc., simultaneously notification terminal by the configuration information carrying Data Radio Bearer 1, after receiving orders, the time span continuing to send upstream data in buffering area on old base station is now 8ms.
Step 704, terminal receives reprovision, according to the instruction of base station 1, start 8ms timing, the upstream data of Data Radio Bearer 1 in RLC and the MAC buffering area of base station 1 correspondence is continued to send to base station 1, in PDCP buffering area, the upstream data of Data Radio Bearer 1 suspends transmission, responds bearing modification complete response to base station 1.
Step 705, the bearing modification that base station 1 receives terminal completes response, responds SeNB terminal reprovision complete to base station 2, and wherein, step 705 and step 706 are in the not free precedence relationship of execution.
Step 706, this embodiment of fixed time is that 8ms arrives, and empties the upstream data of RLC and the MAC buffer data radio bearer 1 of base station 1 correspondence, continues the upstream data of transmission PDCP buffer data radio bearer 1 to base station 2.
Step 707, the upstream data of Data Radio Bearer 1 is sent by base station 2, newly configures normal use.
In above-mentioned steps 703, the instruction of 8ms can pass through direct persond eixis, or by enumeration type, selects one, such as 8ms, 10ms, 12ms in several time, selects one of them configuration to terminal, or the time be acquiescence be exactly 8ms, not configurable.
Embodiment two
In the present embodiment, terminal establishes with community 1 and is connected, be configured with community 3 simultaneously, establish Data Radio Bearer and be designated 1 and Data Radio Bearer 2, Data Radio Bearer 1 and 2 is present on base station 1 and base station 2 simultaneously, is all the Data Radio Bearer of segmentation, simultaneously, base station 1 notification terminal, the upstream data of partition data radio bearer 1 is sent and is all undertaken by base station 1, and the upstream data of partition data radio bearer 2 is sent and all undertaken by base station 2.
In the present embodiment, the flow process of upstream data sending node change is similar to embodiment one, mainly comprises the following steps:
Step one: because base station 1 uplink load increases, base station 1 determines the upstream data of Data Radio Bearer 1 to send to move on on base station 2, SeNB amendment request is sent to base station 2, the configuration information that can carry current data radio bearer 1, as data bearing identification, can also carry and need the upstream data of Data Radio Bearer 1 to send to be changed to base station 2 etc.
Step 2: base station 2 is according to current practice, resource is reserved to Data Radio Bearer 1, and respond SeNB amendment request response to base station 1, response can comprise following content: agree to amendment, the upstream data of Data Radio Bearer 1, as data bearing identification, sends and is changed to base station 2 etc. by the relevant configuration of Data Radio Bearer 1
Step 3: base station 1 receives the response of base station 2, Deta bearer amendment request is sent to terminal, be included in the order of RRC reprovision, carry the configuration information of Data Radio Bearer 1 as data bearing identification, the upstream data of Data Radio Bearer 1 is sent and is changed to base station 2 etc., notification terminal simultaneously, after receiving orders, the time span continuing to send upstream data in buffering area on old base station is now 8ms.
Step 4: terminal receives reprovision, according to the instruction of base station 1, start 8ms timing, the upstream data of Data Radio Bearer 1 in RLC and the MAC buffering area of base station 1 correspondence is continued to send to base station 1, in PDCP buffering area, the upstream data of Data Radio Bearer 1 suspends transmission, respond bearing modification to base station 1 and complete response, the data of Data Radio Bearer 2 send unaffected
Step 5: the bearing modification that base station 1 receives terminal completes response, responds SeNB terminal reprovision to base station 2 and completes, and this step and step 6 have no time precedence relationship
Step 6: this embodiment of fixed time is that 8ms arrives, empty the upstream data of RLC and the MAC buffer data radio bearer 1 of base station 1 correspondence, continue the upstream data of transmission PDCP buffer data radio bearer 1 to base station 2, so far, the new configuration normal use of Data Radio Bearer 1, the data of Data Radio Bearer 2 send unaffected.
Embodiment three
In the present embodiment, terminal establishes with community 1 and is connected, be configured with community 3 simultaneously, establish Data Radio Bearer and be designated 1, Data Radio Bearer 1 is present on base station 1 and base station 2 simultaneously, is the Data Radio Bearer of segmentation, simultaneously, base station 1 notification terminal, upstream data is sent and is undertaken by base station 2.
Fig. 8 is the flow chart of upstream data sending node change in the present embodiment, as shown in Figure 8, mainly comprises the following steps:
Step 801, segmentation radio bearer upstream data sends, and because base station 2 load increases, base station 1 determines Data Radio Bearer 1 upstream data to send to move on on base station 1.Now, owing to being that the upstream data deleting Data Radio Bearer 1 sends on base station 2, therefore do not need to hold consultation with base station 2.
Step 802, base station 1 sends Deta bearer amendment request to terminal, be included in the order of RRC reprovision, carry the configuration information of Data Radio Bearer 1 as data bearing identification, the upstream data of Data Radio Bearer 2 is sent and is changed to base station 1 etc., notification terminal simultaneously, after receiving orders, the time span continuing to send upstream data in buffering area on old base station is now 10ms.
Step 803, terminal receives reprovision, according to the instruction of base station 1, start 10ms timing, the upstream data of Data Radio Bearer 1 in RLC and the MAC buffering area of base station 2 correspondence is continued to send to base station 2, in PDCP buffering area, the upstream data of Data Radio Bearer 1 suspends transmission, responds bearing modification complete response to base station 1.
Step 804, the bearing modification that base station 1 receives terminal completes response, responds SeNB terminal reprovision complete to base station 2, and this step and step 805 be not free precedence relationship on performing.
Step 805, this embodiment of fixed time is that 10ms arrives, and empties the upstream data of RLC and the MAC buffer data radio bearer 1 of base station 2 correspondence, continues the upstream data of transmission PDCP buffer data radio bearer 1 to base station 1.
Step 806, the upstream data of Data Radio Bearer 1 is sent by base station 1, the new configuration normal use of Data Radio Bearer 1.
Embodiment four
In the present embodiment, terminal establishes with community 1 and is connected, be configured with community 3 simultaneously, establish Data Radio Bearer and be designated 1, Data Radio Bearer 1 is present on base station 1 and base station 2 simultaneously, is the Data Radio Bearer of segmentation, simultaneously, base station 1 notification terminal, upstream data is sent and is undertaken by base station 2.
Fig. 9 is the flow chart of upstream data sending node change in the present embodiment, as shown in Figure 9, mainly comprise the following steps: step 901, segmentation radio bearer upstream data sends, because base station 2 load increases, base station 1 determines Data Radio Bearer 1 upstream data to send to move on on base station 1.Now, owing to base station 2 being the upstream data deleting Data Radio Bearer 1 sends, therefore do not need to hold consultation with base station 2.
Step 902, base station 1 sends Deta bearer amendment request to terminal, be included in the order of RRC reprovision, carry the configuration information of Data Radio Bearer 1 as data bearing identification, delete the Data Radio Bearer 1 etc. on base station 2, notification terminal simultaneously, after receiving orders, the time span continuing to send upstream data in buffering area on old base station is now 10ms.
Step 903, terminal receives reprovision, according to the instruction of base station 1, start 10ms timing, the upstream data of Data Radio Bearer 1 in RLC and the MAC buffering area of base station 2 correspondence is continued to send to base station 2, in PDCP buffering area, the upstream data of Data Radio Bearer 1 suspends transmission, responds bearing modification complete response to base station 1.
Step 904, the bearing modification that base station 1 receives terminal completes response, responds SeNB terminal reprovision complete to base station 2, and this step and step 905 be not free precedence relationship on performing.
Step 905, this embodiment of fixed time is that 10ms arrives, and deletes the Data Radio Bearer 1 on base station 2, continues the upstream data of transmission PDCP buffer data radio bearer 1 to base station 1.
Step 906, the upstream data of Data Radio Bearer 1 is sent by base station 1, the new configuration normal use of Data Radio Bearer 1.
From above description, can find out, in the embodiment of the present invention, after terminal receives upstream data sending node change order, original upstream data sending node can be continued through and send corresponding at original upstream data sending node RLC and the upstream data of MAC layer buffering area, the up buffered data of the PDCP layer of terminal and new upstream data suspend transmission, specify the duration, fixed time has arrived, the up buffered data of terminal PDCP layer and new upstream data are changed to new upstream data sending node and send, empty RLC corresponding on original upstream data sending node and the upstream data of MAC layer buffering area, thus the upstream data lost when can reduce the change of upstream data sending node.
Embodiment five:
In the present embodiment, terminal establishes with community 1 and is connected, be configured with community 3 simultaneously, establish Data Radio Bearer and be designated 1 and Data Radio Bearer 2, Data Radio Bearer 1 and 2 is present on base station 1 and base station 2 simultaneously, is all the Data Radio Bearer of segmentation, simultaneously, base station 1 notification terminal, the upstream data of partition data radio bearer 1 is sent and is all undertaken by base station 1, and the upstream data of partition data radio bearer 2 is sent and all undertaken by base station 2.
In the present embodiment, the flow process of upstream data sending node change is similar to embodiment one, mainly comprises the following steps:
Step one: because base station 1 uplink load increases, base station 1 determines the upstream data of Data Radio Bearer 1 to send to move on on base station 2, SeNB amendment request is sent to base station 2, the configuration information that can carry current data radio bearer 1, as data bearing identification, can also carry and need the upstream data of Data Radio Bearer 1 to send to be changed to base station 2 etc.
Step 2: base station 2 is according to current practice, resource is reserved to Data Radio Bearer 1, and respond SeNB amendment request response to base station 1, response can comprise following content: agree to amendment, the upstream data of Data Radio Bearer 1, as data bearing identification, sends and is changed to base station 2 etc. by the relevant configuration of Data Radio Bearer 1
Step 3: base station 1 receives the response of base station 2, Deta bearer amendment request is sent to terminal, be included in the order of RRC reprovision, carry the configuration information of Data Radio Bearer 1 as data bearing identification, the upstream data of Data Radio Bearer 1 is sent and is changed to base station 2 etc., notification terminal simultaneously, after receiving orders, suspending the time span sending upstream data on old base station is now 8ms, now for suspending the data of all new transmissions, comprise the PDCP of base station 1 correspondence, the upstream data of Data Radio Bearer 1 in RLC and MAC buffering area, the upstream data of Data Radio Bearer 1 in these buffering areas is only allowed to be sent to terminal by physical layer, the data awaited a response send and proceed.
Step 4: terminal receives reprovision, according to the instruction of base station 1, start 8ms timing, suspend and the upstream data of Data Radio Bearer 1 in RLC and the MAC buffering area of base station 1 correspondence is newly sent to base station 1, in PDCP buffering area, new transmission is suspended in the upstream data open country of Data Radio Bearer 1, respond bearing modification to base station 1 and complete response, the data of Data Radio Bearer 2 send unaffected, and data send information slip 1.Wherein, PDCPPDU refers to the data in PDCP buffering area, RLCPDU refers to the data in RLC buffering area, MACPDU refers to the data in MAC buffering area, below, be likely identical packet, such as PDCPPDU2 issues rlc layer, may will organize package in RLCPDU1.Namely, after 8ms timing starts, what can proceed process of transmitting only has RLCPDU4, MACPDU2 and 4.
Table 1.
Step 5: the bearing modification that base station 1 receives terminal completes response, responds SeNB terminal reprovision to base station 2 and completes, and this step and step 6 have no time precedence relationship
Step 6: this embodiment of fixed time is that 8ms arrives, empty the upstream data of RLC and the MAC buffer data radio bearer 1 of base station 1 correspondence, the upstream data of PDCP buffer data radio bearer 1 that not yet success sends according to the status report of bottom RLC by terminal is to base station 2, be now PDCP1,2,4, so far, the new configuration normal use of Data Radio Bearer 1, the data of Data Radio Bearer 2 send unaffected.
In the present embodiment, fairly simple process, can also be, after 8ms start by set date, only continuation rlc layer and MAC layer do not receive the data of opposite end response as the transmission flow of RLCPDU2, MACPDU2, namely receive only this response of two, determine follow-up whether process according to response message.Other the opposite end that receives is that ACK or NACK does not continue have sent.Like this, base station would not repeat receive identical data and carry out extra process.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, and in some cases, step shown or described by can performing with the order be different from herein, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
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 (11)
1. an amending method for up carrying, is characterized in that, comprising:
Terminal in dual link receives upstream data sending node change order, wherein, upstream data is sent to be changed to by the first upstream data sending node and is sent by the second upstream data sending node by the described terminal of described upstream data sending node change order instruction;
Described terminal continues to send the part or all of upstream data of the wireless spread-spectrum technology rlc layer corresponding with described first upstream data sending node existed in described terminal and media access control MAC layer buffering area by described first upstream data sending node;
Described terminal empties the rlc layer corresponding with described first upstream data sending node and the upstream data of MAC layer buffering area.
2. method according to claim 1, it is characterized in that, the wireless spread-spectrum technology rlc layer corresponding with described first upstream data sending node and the part upstream data of media access control MAC layer buffering area comprise: not yet receive the data needing in the upstream data of data that opposite end responds or described rlc layer and MAC layer buffering area to carry out retransmitting in the upstream data of described rlc layer and MAC layer buffering area.
3. method according to claim 1, it is characterized in that, described terminal empties the rlc layer corresponding with described first upstream data sending node and the upstream data of MAC layer buffering area, comprise: the timing from receiving when the change of described upstream data sending node is ordered of described terminal, when arriving to the scheduled time, empty the rlc layer corresponding with described first upstream data sending node and the upstream data of MAC layer buffering area.
4. method according to claim 3, is characterized in that,
When described terminal receives upstream data sending node change order, described method also comprises: described terminal suspends the upstream data sending PDCP PDCP layer buffering area corresponding to described first upstream data sending node;
The described scheduled time, when arriving, described method also comprised: described terminal sends the successful upstream data of not yet transmission in described PDCP layer buffering area on described second upstream data sending node.
5. the method according to claim 3 or 4, is characterized in that, the described scheduled time is default value or is specified by top signaling.
6. according to the method in any one of claims 1 to 3, it is characterized in that, the terminal in dual link receives upstream data sending node change order, comprising:
Described terminal receives the described upstream data sending node change order that described first upstream data sending node sends; Or
Described terminal receives the described upstream data sending node change order that described second upstream data sending node sends.
7. a modifier for up carrying, is characterized in that, comprising:
Receiver module, for receiving the upstream data sending node change order of the terminal sent in dual link, wherein, upstream data is sent to be changed to by the first upstream data sending node and is sent by the second upstream data sending node by the described terminal of described upstream data sending node change order instruction;
Sending module, for continuing by described first upstream data sending node the part or all of upstream data sending the wireless spread-spectrum technology rlc layer corresponding with described first upstream data sending node and the media access control MAC layer buffering area existed in described terminal;
Empty module, for emptying rlc layer corresponding with described first upstream data sending node in described terminal and the upstream data of MAC layer buffering area.
8. device according to claim 7, is characterized in that, also comprises: timer, starts, when scheduled duration arrives, empty module described in triggering during for receiving described upstream data sending node change order at described receiver module.
9. device according to claim 8, is characterized in that,
Described device also comprises: first suspends module, for when receiving upstream data sending node change order, suspends the up buffered data sending PDCP PDCP layer buffering area corresponding to described first upstream data sending node;
When described sending module also arrives for described scheduled duration, described second upstream data sending node sends the successful upstream data of not yet transmission in described PDCP layer buffering area.
10. the device according to any one of claim 7 to 9, it is characterized in that, the wireless spread-spectrum technology rlc layer corresponding with described first upstream data sending node and the part upstream data of media access control MAC layer buffering area comprise: not yet receive the data needing in the upstream data of data that opposite end responds or described rlc layer and MAC layer buffering area to carry out retransmitting in the upstream data of described rlc layer and MAC layer buffering area.
11. 1 kinds of terminals, is characterized in that, described terminal is connected with multiple network node simultaneously, and wherein, described terminal comprises the device according to any one of claim 7 to 10.
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| CN201410363981.6A CN105323852B (en) | 2014-07-28 | 2014-07-28 | Uplink bearer modification method and device |
| PCT/CN2014/092799 WO2015117481A1 (en) | 2014-07-28 | 2014-12-02 | Method and device for modifying uplink bearer |
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| CN201410363981.6A CN105323852B (en) | 2014-07-28 | 2014-07-28 | Uplink bearer modification method and device |
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| WO2015117481A1 (en) | 2015-08-13 |
| CN105323852B (en) | 2019-12-24 |
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