Background technology
(1) carrier aggregation technology.
LTE-A(LTE Advanced, senior LTE) peak rate than LTE(Long Term Evolution, Long Term Evolution) improve a lot, require to reach descending 1Gbps up 500Mbps, and LTE-A system requirements and LTE system have good compatibility.Based on improving peak rate, with LTE system compatible and make full use of the needs of frequency spectrum resource, in LTE-A system, introduce CA(Carrier Aggregation, carrier aggregation) technology.
Carrier aggregation technology refers to UE(User Equipment, subscriber equipment) the multiple cell(of polymerization community simultaneously), and multiple cell can provide the mechanism of data transport service simultaneously for UE.In carrier aggregation system, the carrier wave that each cell is corresponding can be continuous or discrete on frequency domain, and for LTE system compatible, the maximum bandwidth of each member carrier is 20MHz, the bandwidth between each member carrier can be identical or different.
In carrier aggregation system, a little PCell(Primary cell, the main plot divided into of UE work) and several SCell(Secondary cell, auxiliary community); Most of control and the work of signaling born in main plot, and as sent uplink feedback, the CQI(Channel Quality Indicator to downlink data, channel quality is indicated) report, ascending pilot frequency transmission etc.; Data-transformation facility is born mainly as resource in auxiliary community.
(2) the many TA of Multi-TA() scene.
Current LTE-A R10 only supports single TA(Timing Alignment, Timing Advance) scene, i.e. the TA of all communities of UE polymerization is identical; But in LTE-A R11, introduced the scene of many TA, i.e. the TA of all communities of UE polymerization may be different.The scene that produces many TA comprises: Inter-band(frequency band) CA and Intra-band CA, but in band, part cell, through RRH(Remote Radio Head, zooms out antenna) or repeater(repeater).Concrete, as shown in Figure 1A-Fig. 1 D, the typical scene of many TA of 3GPP definition comprises:
A, UE polymerization F1 and F2, F1 coverage is less than F2, and F1 and F2 belong to different band, i.e. inter-band CA, as shown in Figure 1A.
B, UE polymerization F1 and F2, and F1 and F2 belong to different band, i.e. inter-band CA, as shown in Figure 1B.
C, UE polymerization F1 and F2, F1 and F2 belong to identical band and F2 process repeater, and the transfer of data of intra-band CA and part cell is through repeater, as shown in Figure 1 C.
D, UE polymerization F1 and F2, F1 and F2 belong to different band and F2 process repeater, and the transfer of data of inter-band CA and part cell is through repeater, as shown in Figure 1 C.
E, UE polymerization F1 and F2, F1 and F2 belong to identical band and F2 process repeater, and the transfer of data of intra-band CA and part cell is through RRH, as shown in Fig. 1 D.
F, UE polymerization F1 and F2, F1 and F2 belong to different band and F2 process repeater, and the transfer of data of inter-band CA and part cell is through RRH, as shown in Fig. 1 D.
It should be noted that for the ease of the TA of many TA system is safeguarded, the current TA group(group of having introduced) concept, belonging to same TA group(is TAG) cell, its UL CC(uplink member carrier) can use identical TA value; Belong to the cell of different TA group, the TA value of its UL CC is not identical.In a TA group, UE only needs He Yige community to keep uplink synchronous, can realize the uplink synchronous to all communities in TA group.
In addition, for the TA group under the PCell of UE configuration can not change, but which TA group the SCell configuring for UE belongs to, and will depend on eNB(base station) configuration.
(3) uplink synchronous.
Uplink synchronous process is for keeping the uplink synchronous of UE and base station, so that UE carries out transmitting uplink data and downlink data is sent to HARQ(Hybrid Auto Repeat request, mixed automatic retransfer request) feedback information.In LTE system, by base station maintenance uplink synchronous; In the time that UE accesses at random, base station is leading according to preamble() obtain initial Timing Advance, follow-up uplink synchronous maintenance process is as shown in Figure 2.
Concrete, base station and UE safeguard respectively a TAT(TA timer, upstream synchronous timing device), base station sends TA command(order to UE), and start the TAT of base station; If UE can not correctly receive TA command, base station, after a while after T1, resends TA command, and restarts the TAT of base station; UE correctly receives after TA command, starts the TAT of UE, and sends ACK(confirmation to base station) information; After base station receives the ACK information of UE transmission, restart the TAT of base station.
Base station does not have overtime for the TAT of certain UE, base station thinks that this UE is in synchronous regime; As long as it is overtime that the TAT that UE oneself safeguards does not have, UE also thinks it oneself is synchronous.
Realizing in process of the present invention, inventor finds at least to exist in prior art following problem:
Whether how be still not clear at present eNB is the TA group under UE configuration SCell, identical for the up timing of multiple intercarriers that is UE polymerization, also has relation with the residing position of UE; For example, for the scene e shown in Fig. 1 D, the up timing of UE on F2 whether with F1 on difference, directly depend on UE whether be positioned at Repeater within or outside.
Embodiment
In LTE R10 system, UE only safeguards 1 uplink synchronous relation, and as UE, to be operated in UL(up) under CA pattern, the Timing Advance of multiple up-link carriers of UE is identical.But in Rel-11 system, due to the increase of CA scene that UE supports, in UL CA, UE can safeguard multiple Timing Synchronization relations, and has introduced the concept of TA group (TAG), be to be configured by network side about the relation of SCell and TA group.But in actual transmissions process, the relation between SCell and TAG can change.In the embodiment of the present invention, provide poor method of measurement and the equipment of timing on a kind of auxiliary community, be judged as to provide for network equipment the method that the TAG of UE configuration changes.
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in the present invention is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present invention, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment mono-
Consider that current Rx-Tx(timing is poor) measuring process in, eNB is by RRC(Radio Resource Control, Radio Resource control) measure to configure UE is carried out to Rx-Tx measurement, and UE receives that this RRC measures after configuration, can on PCell, carry out the Rx-Tx timing difference measurements of UE, the embodiment of the present invention one provides the poor method of measurement of timing on a kind of auxiliary community, to realize the poor measuring process of timing on the SCell of Fu community, as shown in Figure 3, the method comprises the following steps:
Step 301, it is poor that network equipment (as eNB) determines that UE need to measure the timing of multiple Serving cells (serving cell), and this timing is poor to be comprised: the timing poor (being the Rx-Tx Time Difference of UE) between descending time of reception and the up transmitting time of UE; This Serving cell at least comprises auxiliary community, and this Serving cell can also comprise main plot.
Step 302, network equipment notice UE carries out the poor measurement of timing on multiple Serving cells.
Concrete, network equipment can be measured configuration UE and report DL time of reception on multiple Serving cells and the timing deviation of UL transmitting time, and triggers UE and on multiple Serving cells, carry out the measurement of timing deviation.
In the embodiment of the present invention, in notice, UE carries out in the process of the poor measurement of timing on multiple Serving cells, network equipment can send and measure configuration messages to UE, is configured in and on all Serving cells or part Serving cell, carries out the poor measurement of timing in this measurement configuration messages.
In addition, about measuring configuration, can configure the measurement that 1 measurement comprises all Serving cells, also can the multiple measurements of separate configuration, the corresponding Serving cell of each measurement; Therefore, in notice, UE carries out in the process of the poor measurement of timing on multiple Serving cells, network equipment can send and measure configuration messages to UE, in this measurement configuration messages, can only carry one and measure configuration, this measurement is configured for indication UE and on all Serving cells, carries out the poor measurement of timing; Or, in this measurement configuration messages, can carry multiple measurement configurations, each measurement is configured for indication UE and on a Serving cell, carries out the poor measurement of timing.
Step 303, UE receives the notice of carrying out the poor measurement of timing on multiple Serving cells from network equipment.
Corresponding with step 302, when UE is received in the notice of carrying out the poor measurement of timing on multiple Serving cells, UE can receive the measurement configuration messages from network equipment, is configured in and on all Serving cells or part Serving cell, carries out the poor measurement of timing in this measurement configuration messages.
In addition, when UE is received in the notice of carrying out the poor measurement of timing on multiple Serving cells, UE can receive the measurement configuration messages from network equipment, in this measurement configuration messages, can only carry one and measure configuration, this measurement is configured for indication UE and on all Serving cells, carries out the poor measurement of timing; Or, in this measurement configuration messages, can carry multiple measurement configurations, each measurement is configured for indication UE and on a Serving cell, carries out the poor measurement of timing.
Step 304, UE carries out the poor measurement of timing on multiple Serving cells.
Concrete, UE will measure according to the Rx-Tx Time Difference of the UE of network equipment configuration, on the Serving cell of configuration, start measurement of correlation, and the Serving cell of this configuration can be whole Serving cells, also can be configured Differentiated Services community (being part Serving cell).
In the embodiment of the present invention, UE carries out the poor measurement of timing on multiple Serving cells, comprise: UE carries out the poor measurement of timing according to the descending time of reception of auxiliary community self and up transmitting time, UE carries out the poor measurement of timing according to the Rx of auxiliary community self and Tx; Or UE carries out the poor measurement of timing according to the up transmitting time of the descending time of reception of auxiliary community self and main plot, UE carries out the poor measurement of timing according to the Tx of the Rx of auxiliary community self and main plot.
Step 305, UE is by the poor network equipment that sends to of timing on multiple Serving cells of measuring.
In the embodiment of the present invention, UE by measure multiple Serving cells on the poor network equipment that sends to of timing, comprising: UE by periodic report mode (which can adopt the current mechanism that reports) by poor the timing on the multiple Serving cells network equipment that sends to; Or, UE by reporting events mode by poor the timing on the multiple Serving cells network equipment that sends to.
Further, UE by reporting events mode by poor the timing on the multiple Serving cells network equipment that sends to, comprise: (be predefine or pre-configured thresholding when the downgoing time poor (DL Timing is poor) of the multiple member carriers (CC) in same TAG exceedes default thresholding, can select according to actual conditions) time, UE is by poor the timing on the multiple Serving cells network equipment that sends to; Or, (be predefine or pre-configured thresholding when the downgoing time poor (DL Timing is poor) of multiple member carriers of different TAG does not exceed default thresholding, can select according to actual conditions) time, UE is by poor the timing on the multiple Serving cells network equipment that sends to.
Need explanation time, in the time reporting timing on multiple Serving cells poor, can report simultaneously, also can separately report; This reports simultaneously and refers to that UE gives the correct time on each, reports the value of the Serving cell of all measurement configurations.Therefore, UE can be by packing manner by poor the timing on all multiple Serving cells network equipment that sends to together; Or UE can not send to network equipment by the timing difference on each Serving cell separately.
Step 306, timing on multiple Serving cells that network equipment reception UE reports is poor, and utilizes the TAG under the timing Cha Duifu community on multiple Serving cells to adjust (judging according to the timing on different service cells is poor whether the TAG under auxiliary community changes).
In the embodiment of the present invention, the process of transmitting of corresponding step 305, it is poor that this network equipment can receive timing on multiple Serving cells that UE reports together with packing manner; Or the timing on each Serving cell that reception UE reports is separately poor.
In addition, when network equipment receives after the measurement of multiple Serving cells that UE reports, can be according to the difference of the different service cells amount of reporting, carry out the correction of TAG under auxiliary community.Wherein:
If the poor difference of timing that the multiple auxiliary community of the same TAG that UE reports is corresponding or exceed default thresholding, network equipment is divided in poor timing different Serving cell in different TAG; Or, in the time that UE measures according to the up transmitting time of the descending time of reception of auxiliary community and main plot (when UE carries out the poor measurement of timing according to the Tx of the Rx of auxiliary community self and main plot), if timing corresponding to the different TAGFu community that UE reports is poor identical or be less than default thresholding, network equipment is divided in poor timing identical Serving cell in same TAG.
In sum, in the embodiment of the present invention, network equipment carries out the poor measurement of timing by indication UE on multiple Serving cells, measure and report the timing poor (being that UE expands to current timing difference measurements on SCell) on multiple Serving cells by UE, thereby make network equipment can utilize the measurement of PCell and SCell to report, the variation of the timing relationship on the different service cells of acquisition UE, then complete the object that configures suitable TAG for UE, and can judge the variation of the affiliated TAG of SCell.
Embodiment bis-
The embodiment of the present invention two provides the poor method of measurement of timing on a kind of auxiliary community, and in the present embodiment, UE carries out the poor measurement of timing according to the Rx of auxiliary community self and Tx, and 1 TAG is divided into 2 TAG by UE; Wherein, eNB is the community of 2 Cell with UL resource(ascending resources of UE configuration polymerization), be respectively PCell and SCell, and PCell and SCell belong to same TAG.
Based on above-mentioned situation, in the present embodiment, this method of measurement comprises the following steps:
Step 1, eNB configuration UE are all carried out Rx-Tx Time Difference and are measured on PCell and SCell.
Step 2, UE are simultaneously or separately report the measurement report of Rx-Tx Time Difference to eNB.
Wherein, the value of reporting that PCell is corresponding is Rx_pcell – Tx_pcell, and the value of reporting that SCell is corresponding is Rx_scell-Tx_scell.
Step 3, eNB judge that difference that PCell reports with SCell is different or exceed predefine thresholding, by RRC or MAC(Media Access Control, medium access control) signaling carries out TAG to SCell and reshuffles, SCell is configured in 1 new TAG.
It should be noted that, in the present embodiment, the application scenarios of above-mentioned PCell and SCell, can also be applicable to the application scenarios of SCell1 and SCell2.
Embodiment tri-
The embodiment of the present invention three provides the poor method of measurement of timing on a kind of auxiliary community, and in the present embodiment, UE carries out the poor measurement of timing according to the Rx of auxiliary community self and Tx, and 2 TAG are merged into 1 TAG by UE; Wherein, eNB is 2 Cell with UL resource of UE configuration polymerization, is respectively PCell and SCell, and PCell and SCell are configured to respectively 2 TAG.
Based on above-mentioned situation, in the present embodiment, this method of measurement comprises the following steps:
Step 1, eNB configuration UE are all carried out Rx-Tx Time Difference and are measured on PCell and SCell.
Step 2, as two Cell(PCell and the SCell of UE side) on DL Timing difference be less than pre-configured thresholding (network side or predetermined configuration), UE reports the measurement report of Rx-Tx Time Difference to eNB simultaneously.
Wherein, the value of reporting that PCell is corresponding is Rx_pcell – Tx_pcell, and the value of reporting that SCell is corresponding is Rx_scell-Tx_scell.
Step 3, eNB judge that difference that PCell reports with SCell is identical or be not more than predefine thresholding, by RRC or MAC signaling, SCell are carried out to TAG and reshuffle, and SCell and PCell are configured to 1 TAG.
It should be noted that, in the present embodiment, the application scenarios of above-mentioned PCell and SCell, can also be applicable to the application scenarios of SCell1 and SCell2.
Embodiment tetra-
The embodiment of the present invention four provides the poor method of measurement of timing on a kind of auxiliary community, and in the present embodiment, UE carries out the poor measurement of timing according to the Tx of the Rx of auxiliary community self and main plot, and 1 TAG is divided into 2 TAG by UE; Wherein, eNB is 2 Cell with UL resource of UE configuration polymerization, is respectively PCell and SCell, and PCell and SCell belong to same TAG.
Based on above-mentioned situation, in the present embodiment, this method of measurement comprises the following steps:
Step 1, eNB configuration UE are all carried out Rx-Tx Time Difference and are measured on PCell and SCell.
Step 2, UE are simultaneously or separately report the measurement report of Rx-Tx Time Difference to eNB.
Wherein, the value of reporting that PCell is corresponding is Rx_pcell – Tx_pcell, and the value of reporting that SCell is corresponding is Rx_scell-Tx_pcell.
Step 3, eNB judge that difference that PCell reports with SCell is different or exceed predefine thresholding, by RRC or MAC signaling, SCell are carried out to TAG and reshuffle, and SCell is configured in 1 new TAG.
It should be noted that, in the present embodiment, the application scenarios of above-mentioned PCell and SCell, can also be applicable to the application scenarios of SCell1 and SCell2.
Embodiment five
The embodiment of the present invention five provides the poor method of measurement of timing on a kind of auxiliary community, and in the present embodiment, UE carries out the poor measurement of timing according to the Tx of the Rx of auxiliary community self and main plot, and 2 TAG are merged into 1 TAG by UE; Wherein, eNB is 2 Cell with UL resource of UE configuration polymerization, is respectively PCell and SCell, and PCell and SCell are configured to respectively 2 TAG.
Based on above-mentioned situation, in the present embodiment, this method of measurement comprises the following steps:
Step 1, eNB configuration UE are all carried out Rx-Tx Time Difference and are measured on PCell and SCell.
Step 2, UE are simultaneously or separately report the measurement report of Rx-Tx Time Difference to eNB.
Wherein, the value of reporting that PCell is corresponding is Rx_pcell – Tx_pcell, and the value of reporting that SCell is corresponding is Rx_scell-Tx_pcell.
Step 3, eNB judge that difference that PCell reports with SCell is identical or be not more than predefine thresholding, by RRC or MAC signaling, SCell are carried out to TAG and reshuffle, and SCell and PCell are configured to 1 TAG.
It should be noted that, in the present embodiment, the application scenarios of above-mentioned PCell and SCell, can also be applicable to the application scenarios of SCell1 and SCell2.
Embodiment six
The embodiment of the present invention six provides the poor method of measurement of timing on a kind of auxiliary community, and in the present embodiment, UE carries out the poor measurement of timing according to the Tx of the Rx of auxiliary community self and main plot, and 3 TAG are merged into 2 TAG by UE; Wherein, eNB is a UE configuration polyase 13 Cell with UL resource, is respectively PCell, SCell 1 and SCell 2, and PCell, SCell 1 and SCell 2 are configured to respectively 3 TAG.
Based on above-mentioned situation, in the present embodiment, this method of measurement comprises the following steps:
Step 1,, eNB configuration UE on PCell, SCell 1 and SCell 2, all carry out Rx-Tx Time Difference measure.
Step 2, UE are simultaneously or separately report the measurement report of Rx-Tx Time Difference to eNB.
Wherein, the value of reporting that PCell is corresponding is Rx_pcell – Tx_pcell, and the value of reporting of SCell 1 correspondence is Rx_scell1-Tx_pcell, and the value of reporting of SCell 2 correspondences is Rx_scell2-Tx_pcell.
Step 3, eNB judge that difference that SCell 1 reports with SCell 2 is identical or be not more than predefine thresholding, by RRC or MAC signaling, SCell 1 and SCell 2 carried out to TAG and reshuffle, and SCell 1 and SCell 2 are merged into 1 TAG.
In sum, pass through various embodiments of the present invention, provide a kind of method that eNB is judged as the TAG change of UE configuration, be that UE expands to the measurement of current Time Difference on SCell, eNB is by the measurement amount of reporting of PCell and SCell, obtain the variation of timing relationship on UE different service cells, complete the object that configures suitable TAG for UE.
Embodiment seven
Based on the inventive concept same with said method, a kind of network equipment is also provided in the embodiment of the present invention, as shown in Figure 4, this network equipment comprises:
Determination module 11, the timing that need to measure multiple Serving cells for definite subscriber equipment is poor; Described timing is poor to be comprised: the timing between descending time of reception and the up transmitting time of described subscriber equipment is poor.
Sending module 12, for notifying described subscriber equipment to carry out the poor measurement of timing on described multiple Serving cells.
Described sending module 12, specifically for sending and measure configuration messages to described subscriber equipment, is configured in described measurement configuration messages and on all Serving cells or part Serving cell, carries out the poor measurement of timing.
Described sending module 12, specifically for sending and measure configuration messages to described subscriber equipment;
In described measurement configuration messages, carry one and measure configuration, this measurement is configured for the described subscriber equipment of indication and on all Serving cells, carries out the poor measurement of timing; Or,
In described measurement configuration messages, carry multiple measurement configurations, each measurement is configured for the described subscriber equipment of indication and on a Serving cell, carries out the poor measurement of timing.
This network equipment also comprises:
Receiver module 13, poor for receiving timing on described multiple Serving cells of described user equipment to report;
Processing module 14, for utilizing the Timing Advance group TAG under the timing Cha Duifu community on described multiple Serving cell to adjust.
Described receiver module 13, poor specifically for receiving timing on described multiple Serving cells that described subscriber equipment reports together with packing manner; Or,
Receive timing on each Serving cell that described subscriber equipment reports separately poor.
Described Serving cell comprises auxiliary community;
Described processing module 14, if specifically for the poor difference of timing corresponding to the multiple auxiliary community of the same TAG of described user equipment to report or exceed default thresholding, is divided in poor timing different Serving cell in different TAG;
In the time that described subscriber equipment is measured according to the up transmitting time of the descending time of reception of auxiliary community and main plot, if timing corresponding to the different TAGFu community of described user equipment to report is poor identical or be less than default thresholding, poor timing identical Serving cell is divided in same TAG.
Wherein, the modules of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into multiple submodules.
Embodiment eight
Based on the inventive concept same with said method, a kind of subscriber equipment is also provided in the embodiment of the present invention, as shown in Figure 5, this subscriber equipment comprises:
Receiver module 21, for receiving the notice of carrying out the poor measurement of timing on multiple Serving cells from network equipment; Described timing is poor to be comprised: the timing between descending time of reception and the up transmitting time of described subscriber equipment is poor.
Measurement module 22, for carrying out the poor measurement of timing on described multiple Serving cells.
Described receiver module 21, specifically for receiving from the measurement configuration messages of described network equipment, is configured in described measurement configuration messages and on all Serving cells or part Serving cell, carries out the poor measurement of timing.
Described receiver module 21, specifically for receiving the measurement configuration messages from described network equipment;
In described measurement configuration messages, carry one and measure configuration, this measurement is configured for the described subscriber equipment of indication and on all Serving cells, carries out the poor measurement of timing; Or,
In described measurement configuration messages, carry multiple measurement configurations, each measurement is configured for the described subscriber equipment of indication and on a Serving cell, carries out the poor measurement of timing.
Described Serving cell comprises auxiliary community;
Described measurement module 22, specifically for carrying out the poor measurement of timing according to the descending time of reception of auxiliary community self and up transmitting time; Or,
Carry out the poor measurement of timing according to the up transmitting time of the descending time of reception of auxiliary community self and main plot.
This subscriber equipment also comprises:
Sending module 23, for sending to described network equipment by poor the timing on described multiple Serving cells of measuring.
Described sending module 23, specifically for sending to described network equipment by periodic report mode by poor the timing on described multiple Serving cells; Or,
Send to described network equipment by reporting events mode by poor the timing on described multiple Serving cells.
Described sending module 23, while being further used for that downgoing time when the multiple member carriers in same TAG is poor exceedes default thresholding, sends to described network equipment by poor the timing on described multiple Serving cells; Or,
When the downgoing time of multiple member carriers of different TAG is poor while not exceeding default thresholding, send to described network equipment by poor the timing on described multiple Serving cells.
Described sending module 23, specifically for sending to together described network equipment by packing manner by poor the timing on described multiple Serving cells; Or,
Separately the timing difference on each Serving cell is not sent to described network equipment.
Wherein, the modules of apparatus of the present invention can be integrated in one, and also can separate deployment.Above-mentioned module can be merged into a module, also can further split into multiple submodules.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add essential general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions (can be personal computers in order to make a computer equipment, server, or the network equipment etc.) carry out the method described in each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can be distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from the present embodiment.The module of above-described embodiment can be merged into a module, also can further split into multiple submodules.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
Disclosed is above only several specific embodiment of the present invention, and still, the present invention is not limited thereto, and the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.