CN103313270B - The method and device of enhanced uplink covering, base station - Google Patents
The method and device of enhanced uplink covering, base station Download PDFInfo
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- CN103313270B CN103313270B CN201210069078.XA CN201210069078A CN103313270B CN 103313270 B CN103313270 B CN 103313270B CN 201210069078 A CN201210069078 A CN 201210069078A CN 103313270 B CN103313270 B CN 103313270B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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Abstract
The invention discloses a kind of method and device of enhanced uplink covering, base stations, wherein the method includes：Network controls user equipment (UE) sends same uplink UL transmission blocks using more than two hybrid automatic repeat-request HARQ processes.In the present invention, base station sends same UL transmission blocks by controlling UE using more than two HARQ processes, and the number of transmissions is attempted by controlling transmission time interval TTI boundlings length and the maximum of HARQ processes, realize the control covered to enhanced uplink, the covering performance for not only increasing UL also achieves the flexibility of resource allocation.
Description
Technical field
A kind of method and dress covered the present invention relates to enhanced uplink soverlay technique more particularly to enhanced uplink
It sets, base station.
Background technology
The Radio Access Network of long term evolution (LTE, Long Term Evolution) system includes：The node B of enhancing
(eNB) with user equipment (UE, User Equipment), wherein the node B of enhancing is connected with core network or other networks,
And it is in communication with each other by wireless interface and the UE realizations in the cell that node B is serviced.However, in cell edge,
Sometimes UE meetings power limited, i.e. their transmission power are not enough to reach the transmission error rate of target, i.e., so-called Block Error Rate
Desired value is not achieved in (BLER, Block Error Ratio).It is, thus, sought for the covering of the UE for enhancing power limited
Solution, that is, need find enhanced uplink (UL, Uplink) cover solution.Currently, Transmission Time Interval
Boundling (TTI Bundling, Transmission Time Interval Bundling) is for realizing UL coverage enhancements
Prior art.Currently, in the 3rd generation partner program (3GPP, 3rd Generation Partnership Project) LTE
In system, transmission time interval (tti) bundle thought has been proposed and has adopted.
So-called TTI boundlings refer to that scheduler is the radio resource that UE is allocated more than 1 Transmission Time Interval.Make UE continuous
Transmission Time Interval on continuously transmit the redundancy versions (RV, Redundancy Version) of same transmission block, and will be above-mentioned
1 transmission attempt of UE is regarded in operation as.Wherein, TTI boundlings are realized by logical resource control signaling.However, TTI boundlings exist
The flexibility that scheduler executes resource allocation, situation especially excessive in boundling length are limited in a way.To current
Until, still not good solution, the covering for enhancing UL, while taking into account the flexibility of resource allocation.
Invention content
In view of this, the main purpose of the present invention is to provide a kind of method and device of enhanced uplink covering, bases
It stands, the covering performance of UL can be improved, and realize the flexibility of resource allocation.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of method of enhanced uplink covering, including：
Network controls UE sends same UL transmission blocks using two or more HARQ processes.
Preferably, the method further includes：
The network side is sent and described two above HARQ processes after being correctly decoded the UL transmission blocks to the UE
It is one-to-one to terminate instruction.
Preferably, the network controls UE sends same UL transmission blocks using two or more HARQ processes, is：
The network side by the UE send with described two above one-to-one UL grant informations of HARQ processes,
It controls the UE and sends the same UL transmission blocks using described two above HARQ processes.
Preferably, the UL grant informations include：
Single Transmission Time Interval TTI time/frequency source blocks distribution information, Modulation and Coding Scheme, power control command and
HARQ process sets bundle flags.
Preferably, laterally the UE is sent the network and described two above one-to-one UL of HARQ processes authorize letter
Before breath, the method further includes：
Following at least one information are notified the UE by the network side by proprietary system message：
Redundancy transmitted by TTI boundlings enabler flags, boundling length and continuous boundling subframe related with TTI boundlings
Version RV.
Preferably, the HARQ process sets bundle flag indicate current HARQ process UL grant informations whether with front HARQ
The UL grant informations of process correspond to identical UL transmission blocks.
Preferably, the method further includes：
When belonging to the change of the UL grant informations of certain HARQ process of described two above HARQ processes, the network is lateral
The UE sends the UL grant informations after change related with certain described HARQ process.
Preferably, the method further includes：
The network side receives what the UE was sent by belonging to certain HARQ process of described two above HARQ processes
After redundancy versions RV related with the UL transmission blocks, pass through described two above HARQ processes using the received UE
All RVs related with the UL transmission blocks sent decode the UL transmission blocks, and are fed back to the UE and institute setting TTI
State message whether certain HARQ process related successfully decoded.
Preferably, the network side is base station.
A kind of device of enhanced uplink covering, including：
Control unit sends same UL transmission blocks for controlling UE using more than two HARQ processes UE.
Preferably, described device further includes decoding unit and transmission unit, wherein：
Decoding unit, the UL transmission blocks for decoding HARQ processes；
Transmission unit, after being correctly decoded the UL transmission blocks of certain HARQ process, to the UE send with it is described two more than
HARQ processes terminate instruction correspondingly.
Preferably, described control unit is additionally operable to, from the transmission unit to the UE send with it is described two more than
The one-to-one UL grant informations of HARQ processes control the UE and send the same UL using described two above HARQ processes
Transmission block.
Preferably, the UL grant informations include：
Time/frequency source block distribution information, Modulation and Coding Scheme, power control command and HARQ process sets in single TTI
Bundle flag.
Preferably, the transmission unit sends to the UE and is authorized with described two above one-to-one UL of HARQ processes
It before information, is additionally operable to, following at least one information is notified by the UE by proprietary system message：
The redundancy version that TTI boundlings enabler flags, boundling length and continuous boundling subframe related with TTI boundlings are sent
This RV.
Preferably, the transmission unit is additionally operable to, in the UL for certain the HARQ process for belonging to described two above HARQ processes
When grant information changes, the network UL that laterally UE is sent after change related with certain described HARQ process authorize letter
Breath.
Preferably, described device further includes：
Receiving unit is sent for receiving the UE by belonging to certain HARQ process of described two above HARQ processes
Redundancy versions RV related with the UL transmission blocks；
The decoding unit is additionally operable to, and is sent by described two above HARQ processes using the received UE
The RV of all HARQ processes related with the UL transmission blocks decodes the UL transmission blocks, and in setting TTI to passing through
State message whether transmission unit feeds back successfully decoded related with certain described HARQ process to the UE.
A kind of base station, the device of aforementioned enhanced uplink covering.
In the present invention, base station sends same UL transmission blocks by controlling UE using more than two HARQ processes, and passes through
Controlling transmission time interval TTI boundlings length and the maximum of HARQ processes attempt the number of transmissions, and enhanced uplink is covered in realization
The control of lid not only increases the covering performance of UL, also achieves the flexibility of resource allocation.
Description of the drawings
Fig. 1 is the schematic diagram of redundancy versions RV；
Fig. 2 is the first schematic diagram passed that uplink UL transmission blocks are realized by HARQ process boundlings of the embodiment of the present invention；
Fig. 3 is being passed by HARQ processes boundling and Transmission Time Interval TTI boundlings realization uplink UL for the embodiment of the present invention
Defeated piece of the first schematic diagram passed；
Fig. 4 is the schematic diagram of the re-transmission that uplink UL transmission blocks are realized by HARQ process boundlings of the embodiment of the present invention；
Fig. 5 is being passed by HARQ processes boundling and Transmission Time Interval TTI boundlings realization uplink UL for the embodiment of the present invention
The schematic diagram of defeated piece of re-transmission；
Fig. 6 is the composed structure schematic diagram of the device of the enhancing uplink UL coverings of the embodiment of the present invention；
Fig. 7 is the composed structure schematic diagram for the device that another enhancing uplink UL of the embodiment of the present invention is covered.
Specific implementation mode
The present invention basic thought be：Base station sends same UL transmission by controlling UE using more than two HARQ processes
Block, and the number of transmissions is attempted by controlling transmission time interval TTI boundlings length and the maximum of HARQ processes, it realizes in enhancing
The control of line link covering, not only increases the covering performance of UL, also achieves the flexibility of resource allocation.
It is right by the following examples and with reference to attached drawing to make the purpose of the present invention, technical solution and advantage be more clearly understood
The present invention is further described.
LTE system uses the hybrid automatic repeat-request of incremental redundancy (IR, Incremental Redundancy) form
(HARQ, Hybrid Automatic Repeat reQuest) realizes the error control mechanism of physical layer, to ensure Service Quality
Amount requires.Wherein, in order to realize the HARQ transmission of IR forms, RV, which is designed, to be adopted and is used by LTE system.And RV refers to from channel
The predetermined bit position of encoder output sequence starts to recycle the bit sequence of the predetermined length of output one by one；Wherein, described pre-
Measured length is related with resource allocation size and modulation scheme.Fig. 1 is the schematic diagram of redundancy versions, as shown in Figure 1, each RV definition
One transmission starting point, transmission for the first time and each HARQ are retransmitted respectively using different RV, for realizing redundant bit
It gradually accumulates, to complete the HARQ operation of IR forms.
Embodiment one
In this example, it is assumed that the node B serves of enhancing are in UE, and uplink service has been activated.
Fig. 2 is the first schematic diagram passed that uplink UL transmission blocks are realized by HARQ process boundlings of the embodiment of the present invention, such as
Shown in Fig. 2, in 1 ranges of Transmission Time Interval TTI, the node B of enhancing is by being contained in downlink (DL, Down Link)
Bandwidth Physical Downlink Control Channel (PDCCH, Physical Downlink Control CHannel) carrying about HARQ
The UL grant informations of process 1 are that UE uplink transmission blocks to be transmitted distribute HARQ processes 1 money (corresponding with Transmission Time Interval TTI 5)
Source；Similarly, in 6 ranges of Transmission Time Interval TTI, the node B of enhancing passes through the UL grant informations about HARQ processes 2
Distribute HARQ processes 2 (corresponding with Transmission Time Interval TTI 7) resource for UE UL transmission blocks to be transmitted.Wherein, the UL is authorized
Information includes：Time/frequency source block distribution information, Modulation and Coding Scheme, power control command and HARQ processes in single TTI
Collect bundle flag；Wherein, HARQ process sets bundle flag indicate current HARQ process UL grant informations whether with front HARQ processes
UL grant informations correspond to same transmission, specifically, " 0 " indicate UL grant informations and the front HARQ of current HARQ process into
The UL grant informations of journey correspond to different transmission blocks, and " 1 " indicates corresponding identical transmission block.By taking present example as an example, with HARQ
1 related HARQ process sets bundle flag of process is set to " 0 ", and HARQ process sets bundle flags related with HARQ processes 2 are set to
" 1 ", i.e. HARQ processes 1 identical UL transmission blocks corresponding with the UL grant informations of HARQ processes 2.
UE is originated in Transmission Time Interval TTI 1 in the Transmission Time Interval span terminated to Transmission Time Interval TTI 4
Execute following operation：Step 1 receives and decodes the PDCCH that 1 DL portions of bandwidth of Transmission Time Interval TTI is included and holds
The UL grant informations related with HARQ processes 1 carried；Here, suppose that UE is properly received and has decoded the UL grant informations.Step
Rapid two, whether new UL transmission blocks are currently sent according to HARQ process sets bundle flags related with HARQ processes 1 judgement；Here,
Since the HARQ process sets bundle flags related with HARQ processes 1 are " 0 ", accordingly, it is determined that sending new UL transmission blocks.UE exists
Following operation is executed in Transmission Time Interval TTI 5：The new UL is sent according to UL grant informations related with HARQ processes 1
Transmission block, the UL grant informations include：Single TTI time/frequency source blocks distribution information, Modulation and Coding Scheme and power control
Order.
UE is originated in Transmission Time Interval TTI 6 in the Transmission Time Interval span terminated to Transmission Time Interval TTI 9
Execute following operation：Step 1 receives and decodes the PDCCH that Transmission Time Interval TTI6 DL portions of bandwidth is included and holds
The UL grant informations related with HARQ processes 2 carried；Here, suppose that UE is properly received and has decoded the UL grant informations.Step
Rapid two, whether new UL transmission blocks are currently sent according to HARQ process sets bundle flags related with HARQ processes 2 judgement；Here,
Since the HARQ process sets bundle flags related with HARQ processes 2 are " 1 ", accordingly, it is determined that sending and 1 phase of front HARQ processes
Same UL transmission blocks.UE executes following operation in Transmission Time Interval TTI 10：It is authorized according to UL related with HARQ processes 2
Information sends the UL transmission blocks identical with process 1, and the UL grant informations include：Single Transmission Time Interval running time-frequency resource
Block distributes information, Modulation and Coding Scheme and power control command.
Embodiment two
In this example, it is assumed that the node B serves of enhancing are in UE, and uplink service has been activated.
The node B of enhancing notifies UE or less to believe by the radio frequency resource control signaling being carried in UE proprietary system message
Breath：The RV that TTI boundlings enabler flags, boundling length and continuous boundling subframe related with TTI boundlings are sent.Specifically,
In this example, it is assumed that TTI boundling enabler flags are set to " 1 ", indicate that TTI collection beam functions are enabled, boundling length is 4, with TTI
Boundling is in relation to the redundancy versions that continuous boundling subframe is sent：{ RV0, RV1, RV2, RV3 }.
UE receives and decodes the radio frequency resource control signaling in the system message, obtains and preserves following information：TTI collection
The RV information that beam enabler flags, boundling length and continuous boundling subframe related with TTI boundlings are sent.
Fig. 3 is the embodiment of the present invention by HARQ processes boundling and transmission time interval (tti) bundle realization uplink UL transmission blocks
The first schematic diagram passed, as shown in figure 3, in 1 ranges of Transmission Time Interval TTI, the node B of enhancing is by being contained in DL bands
The UL grant informations about HARQ processes 1 of wide PDCCH carryings be UE uplink transmission blocks to be transmitted distribute HARQ processes 1 (with
Transmission Time Interval TTI 5 is corresponded to) resource；Similarly, in 9 ranges of Transmission Time Interval TTI, the node B of enhancing passes through pass
It is that UE UL transmission blocks distribution HARQ processes 2 to be transmitted are (right with Transmission Time Interval TTI 13 in the UL grant informations of HARQ processes 2
Answer) resource.Here, UL grant informations include：Single Transmission Time Interval time/frequency source block distribution information, Modulation and Coding Scheme,
Power control command and HARQ process sets bundle flags；Wherein, HARQ process sets bundle flag indicates that current HARQ process UL is authorized
Information same transmission whether corresponding with the UL grant informations of front HARQ processes, specifically, " 0 " indicate in current HARQ process
Row grant information and the corresponding different transmission blocks of the uplink grant information of front HARQ processes, " 1 " indicate corresponding same transmission.With
For present example, HARQ process sets bundle flags related with HARQ processes 1 are set to " 0 ", related with HARQ processes 2
HARQ process sets bundle flags are set to " 1 ", i.e., HARQ processes 1 authorize corresponding identical UL to be transmitted with the UL of HARQ processes 2
Transmission block.
UE is originated in Transmission Time Interval TTI 1 in the Transmission Time Interval span terminated to Transmission Time Interval TTI 4
Execute following operation：Step 1 receives and decodes the PDCCH that 1 DL portions of bandwidth of Transmission Time Interval TTI is included and holds
The UL grant informations related with HARQ processes 1 carried；Here, suppose that UE is properly received and has decoded the UL grant informations.Step
Rapid two, whether new UL transmission blocks are currently sent according to HARQ process sets bundle flags related with HARQ processes 1 judgement；Here,
Since the HARQ process sets bundle flags related with HARQ processes 1 are " 0 ", accordingly, it is determined that sending new UL transmission blocks.Step
Three, judge that the current transmission time interval (tti) bundle function that whether enables then obtains if the judgment is Yes according to TTI boundling enabler flags
The RV information for taking TTI boundlings length and continuous boundling subframe related with TTI boundlings to send；Here, current TTI boundlings work(
It can be enabled, and boundling length is 4, the RV that continuous boundling subframe related with TTI boundlings is sent is：RV0, RV1,
RV2, RV3 }.
UE starts in Transmission Time Interval TTI 5 in the Transmission Time Interval span terminated to Transmission Time Interval TTI 8
Execute following operation：The new UL transmission is sent according to UL grant informations related with HARQ processes 1 and TTI boundling information
Block；The UL grant informations include：Single Transmission Time Interval time/frequency source block distribution information, Modulation and Coding Scheme and power
Control command, TTI boundling information include：The RV information that boundling length, continuous boundling subframe are sent.Specifically, in transmission
Between interval TTI 5 send uplink transmission block RV0, Transmission Time Interval TTI 6 send uplink transmission block RV1, in transmission time
It is spaced TTI 7 and sends uplink transmission block RV2, uplink transmission block RV3 is sent in Transmission Time Interval TTI 8.
UE starts in Transmission Time Interval TTI 9 in the Transmission Time Interval span terminated to Transmission Time Interval TTI 12
Execute following operation：Step 1 receives and decodes the PDCCH that 9 DL portions of bandwidth of Transmission Time Interval TTI is included and holds
The UL grant informations related with HARQ processes 2 carried；Here, suppose that UE is properly received and has decoded the UL grant informations.Step
Rapid two, whether new UL transmission blocks are currently sent according to HARQ process sets bundle flags related with HARQ processes 2 judgement；Specifically
Ground, since the HARQ process sets bundle flags related with HARQ processes 2 are " 1 ", accordingly, it is determined that sending identical with process 1
UL transmission blocks.Step 3 judges currently whether enable TTI collection beam functions, such as according to Transmission Time Interval TTI boundling enabler flags
Fruit is judged as YES, then obtains TTI boundlings length and continuous boundling subframe related with Transmission Time Interval TTI boundlings is sent
RV information；Here, current transmission time interval TTI collection beam function is enabled, and boundling length is 4, continuous boundling
Frame send RV information be：{ RV0, RV1, RV2, RV3 }.
The Transmission Time Interval span that UE starts to terminate to Transmission Time Interval TTI 16 in Transmission Time Interval TTI 13
It is operated below interior execution：It is sent according to UL grant informations related with HARQ processes 2 and Transmission Time Interval TTI boundling information
The UL transmission blocks identical with HARQ processes 1；Wherein, the UL grant informations include：Single Transmission Time Interval time-frequency money
Source block distribution information, Modulation and Coding Scheme and power control command, Transmission Time Interval TTI boundling information include：Boundling is long
The RV information that degree, continuous boundling subframe are sent.Specifically, transmission block RV0 is sent in Transmission Time Interval TTI 13, transmitted
Time interval TTI 14 sends transmission block RV1, transmission block RV2 is sent in Transmission Time Interval TTI 15, in Transmission Time Interval
TTI 16 sends transmission block RV3.
Embodiment three
In this example, it is assumed that the node B serves of enhancing are in UE, and uplink service has been activated.Assuming that according to embodiment
One the method, when 1st transmission attempt of the UL transmission blocks in 2 HARQ processes, are completed.
Fig. 4 is the schematic diagram of the re-transmission that uplink UL transmission blocks are realized by HARQ process boundlings of the embodiment of the present invention, such as
Shown in Fig. 4, since Transmission Time Interval TTI 1 to Transmission Time Interval TTI 4 terminate Transmission Time Interval span in, increase
Strong the 1st transmission attempt RV of Node-B receiver HARQ processes 1, and passed according to the 1st transmission attempt RV decodings UL of HARQ processes 1
Defeated piece；In Transmission Time Interval TTI5, the node B transmissions of enhancing are related with the 1st transmission attempt of HARQ processes 1 certainly/no
Fixed (ACK/NACK) response, if UL transmission blocks are correctly decoded, otherwise the ACK responses for sending affirmative send negative
NACK responses.In the Transmission Time Interval span terminated to Transmission Time Interval TTI9 since Transmission Time Interval TTI 6, increase
Strong the 1st transmission attempt RV of Node-B receiver HARQ processes 2, and according to HARQ processes 1 the 1st transmission attempt RV and HARQ
The 1st transmission attempt RV of process 2 decodes UL transmission blocks；In Transmission Time Interval TTI 10, the node B of enhancing is sent and HARQ
The 1st ACK/NACK response of the transmission attempt in relation to ack/nack of process 2 sends affirmative if UL transmission blocks are correctly decoded
Otherwise ACK responses send negative NACK responses.
In the Transmission Time Interval span terminated to Transmission Time Interval TTI 10 since Transmission Time Interval TTI 5,
UE is received and is decoded and is carried on Physical HARQ Indicator Channel (PHICH, Physical HARQ Indicator Channel)
Ack/nack ACK/NACK responses related with the 1st transmission attempt of HARQ processes 1；It is answered if above-mentioned response is the ACK of affirmative
It answers, then 1 transmission ending of HARQ processes, otherwise, in Transmission Time Interval TTI 11, UE executes HARQ the 2nd transmission of process 1 and tastes
Examination.In the Transmission Time Interval span terminated to Transmission Time Interval TTI 15 since Transmission Time Interval TTI 10, UE connects
It receives and decodes the ack/nack ACK/NACK responses related with the 1st transmission attempt of HARQ processes 2 being carried on PHICH；Such as
The above-mentioned response of fruit is the ACK responses of affirmative, and 2 transmission ending of HARQ processes, otherwise, in Transmission Time Interval TTI 16, UE is held
The 2nd transmission attempt of row HARQ processes 2.
In the Transmission Time Interval span terminated to Transmission Time Interval TTI 14 since Transmission Time Interval TTI 11,
The 2nd transmission attempt RV of Node-B receiver HARQ processes 1 of enhancing, and according to HARQ processes 1 the 1st transmission attempt RV, HARQ into
The transmission attempt of transmission attempt RV and HARQ process 2 the 1st time of journey 1 the 2nd time RV decodes UL transmission blocks.In Transmission Time Interval TTI
In 15, node B transmissions and the 2nd ACK/NACK response of the transmission attempt in relation to ack/nack of HARQ processes 1 of enhancing, if
UL transmission blocks are correctly decoded, and send ACK responses certainly, otherwise, send negative NACK responses.From Transmission Time Interval TTI 16
Start in the Transmission Time Interval span terminated to Transmission Time Interval TTI 19, the Node-B receiver HARQ processes 2 the 2nd of enhancing
Secondary transmission attempt RV, and according to transmission attempt RV, the HARQ process of transmission attempt RV, HARQ process 1 the 2nd time of HARQ processes 1 the 1st time
The 2nd transmission attempt RV of 2 the 1st transmission attempt RV and HARQ processes 2 decodes UL transmission blocks；In Transmission Time Interval TTI 20
Interior, the node B of enhancing sends the ACK/NACK responses of ack/nack related with the 2nd transmission attempt of HARQ processes 2, if
UL transmission blocks are correctly decoded, then send the ACK responses of affirmative, otherwise, send the NACK responses of negative.
In the Transmission Time Interval span terminated to Transmission Time Interval TTI 20 since Transmission Time Interval TTI 15,
UE is received and is decoded the ack/nack ACK/NACK related with the 2nd transmission attempt of HARQ processes 1 being carried on PHICH and answers
It answers；If above-mentioned response is the ACK responses of affirmative, 1 transmission ending of HARQ processes, otherwise, from Transmission Time Interval TTI 33
Start in the span terminated to Transmission Time Interval TTI 36, UE executes HARQ the 3rd transmission attempt of process 1；From transmission time
Be spaced TTI 32 start Transmission Time Interval span in, UE receive and decode be carried on PHICH with HARQ processes 2 the 2nd
The related ack/nack ACK/NACK responses of secondary transmission attempt；2 transmission ending of HARQ processes.
In the Transmission Time Interval span terminated to Transmission Time Interval TTI 24 since Transmission Time Interval TTI 21,
The 3rd transmission attempt RV of Node-B receiver HARQ processes 1 of enhancing, and according to HARQ processes 1 the 1st transmission attempt RV, HARQ into
The 2nd transmission attempt RV of journey 1, the 1st transmission attempt RV and the HARQ process 2 of the 3rd transmission attempt RV, HARQ process 2 of process 1
2nd time transmission attempt RV decodes UL transmission blocks.In Transmission Time Interval TTI 25, the node B of enhancing is sent and HARQ processes 1
3rd ACK/NACK response of the transmission attempt in relation to ack/nack sends ACK certainly and answers if UL transmission blocks are correctly decoded
It answers, otherwise, sends negative NACK responses.In Transmission Time Interval span since Transmission Time Interval TTI 25, UE is received
And decode the ack/nack ACK/NACK responses related with the 3rd transmission attempt of HARQ processes 1 being carried on PHICH；HARQ
1 transmission ending of process.
If the node B of enhancing requires the subsequent corresponding uplink of the process change of transmission attempt again of some HARQ process to award
Information (including Transmission Time Interval time-frequency resource allocating, Modulation and Coding Scheme and power control) is given, the node B of enhancing needs to lead to
It crosses PDCCH and sends UL grant informations related with the HARQ processes again.For example, it is assumed that the node B of enhancing require HARQ into
The 2nd transmission attempt of journey 1 and the 3rd transmission attempt are different from the 1st UL grant information of transmission attempt of HARQ processes 1, enhancing
Node B also need additionally to execute following operation：In Transmission Time Interval TTI 7, the node B of enhancing is sent out again by PDCCH
Send UL grant informations related with HARQ processes 1.UE also needs additionally to execute following operation：Since Transmission Time Interval TTI 7
To TTI 10 terminate Transmission Time Interval span in, UE receive and decode be carried on PDCCH with HARQ processes 1 in relation to UL
Then grant information authorizes letter according to what the replacement of the UL grant informations of above-mentioned newest reception preserved with 1 related UL of HARQ processes
Breath.
According to the present embodiment it is found that the node B of enhancing has following characteristics：Assuming that the node B of enhancing has been correctly decoded UL
Transmission block, and ACK responses certainly related with some HARQ process are had sent, if another HARQ process not yet terminates,
The node B then enhanced will also send ACK responses certainly related with another HARQ process, to terminate UL transmission blocks respectively two
HARQ transmission process in a HARQ processes.
Example IV
In this example, it is assumed that the node B serves of enhancing are in UE, and uplink service has been activated.Assuming that according to embodiment
Two the methods, 1st transmission attempt of the UL transmission blocks in 2 HARQ processes have been completed.
Fig. 5 is the embodiment of the present invention by HARQ processes boundling and transmission time interval (tti) bundle realization uplink UL transmission blocks
Re-transmission schematic diagram, as shown in figure 5, since Transmission Time Interval TTI 1 to Transmission Time Interval TTI 7 terminate transmission
In time interval span, the 1st transmission attempt RV of Node-B receiver HARQ processes 1 of enhancing, and according to the 1st biography of HARQ processes 1
Defeated trial RV decodes UL transmission blocks；In Transmission Time Interval TTI 8, the node B of enhancing is sent and the 1st biography of HARQ processes 1
Defeated ACK/NACK response of the trial in relation to ack/nack sends the ACK responses of affirmative if UL transmission blocks are correctly decoded,
Otherwise, the NACK responses of negative are sent.To the transmission that Transmission Time Interval TTI 15 terminates since Transmission Time Interval TTI 9
In time interval span, the 1st transmission attempt RV of Node-B receiver HARQ processes 2 of enhancing, and according to the 1st biography of HARQ processes 1
The 1st transmission attempt RV of defeated trial RV and HARQ processes 2 decodes UL transmission blocks；In Transmission Time Interval TTI 16, enhancing
Node B send and the 1st ACK/NACK response of the transmission attempt in relation to ack/nack of HARQ processes 2, if UL transmission block quilts
It is correctly decoded, sends ACK responses certainly, otherwise, send negative NACK responses.
In the Transmission Time Interval span terminated to Transmission Time Interval TTI 16 since Transmission Time Interval TTI 8,
UE is received and is decoded the ack/nack ACK/NACK related with the 1st transmission attempt of HARQ processes 1 being carried on PHICH and answers
It answers；If above-mentioned response is the ACK responses of affirmative, 1 transmission ending of HARQ processes, otherwise, from Transmission Time Interval TTI 17
Start in the span terminated to Transmission Time Interval TTI 20, UE executes HARQ the 2nd transmission attempt of process 1.From transmission time
Interval TTI 16 starts in the Transmission Time Interval span terminated to Transmission Time Interval TTI 24, and UE is received and decoded and is carried on
Ack/nack ACK/NACK responses related with the 1st transmission attempt of HARQ processes 2 on PHICH；If above-mentioned response is willing
Fixed ACK responses, 2 transmission ending of HARQ processes, otherwise, to Transmission Time Interval TTI since Transmission Time Interval TTI 25
In 28 spans terminated, UE executes HARQ the 2nd transmission attempt of process 2.
In the Transmission Time Interval span terminated to Transmission Time Interval TTI 23 since Transmission Time Interval TTI 17,
The 2nd transmission attempt RV of Node-B receiver HARQ processes 1 of enhancing, and according to HARQ processes 1 the 1st transmission attempt RV, HARQ into
The transmission attempt of transmission attempt RV and HARQ process 2 the 1st time of journey 1 the 2nd time RV decodes UL transmission blocks.In Transmission Time Interval TTI
In 24, node B transmissions and the 2nd ACK/NACK response of the transmission attempt in relation to ack/nack of HARQ processes 1 of enhancing, if
UL transmission blocks are correctly decoded, and send ACK responses certainly, otherwise, send negative NACK responses.From Transmission Time Interval TTI 25
Start in the Transmission Time Interval span terminated to Transmission Time Interval TTI 31, the Node-B receiver HARQ processes 2 the 2nd of enhancing
Secondary transmission attempt RV, and according to transmission attempt RV, the HARQ process of transmission attempt RV, HARQ process 1 the 2nd time of HARQ processes 1 the 1st time
The 2nd transmission attempt RV of 2 the 1st transmission attempt RV and HARQ processes 2 decodes UL transmission blocks；In Transmission Time Interval TTI 32
Interior, the node B of enhancing sends the ACK/NACK responses of ack/nack related with the 2nd transmission attempt of HARQ processes 2, if
UL transmission blocks are correctly decoded, then send the ACK responses of affirmative, otherwise, send the NACK responses of negative.
In the Transmission Time Interval span terminated to Transmission Time Interval TTI 32 since Transmission Time Interval TTI 24,
UE is received and is decoded the ack/nack ACK/NACK related with the 2nd transmission attempt of HARQ processes 1 being carried on PHICH and answers
It answers；If above-mentioned response is the ACK responses of affirmative, 1 transmission ending of HARQ processes, otherwise, from Transmission Time Interval TTI 33
Start in the span terminated to Transmission Time Interval TTI 36, UE executes HARQ the 3rd transmission attempt of process 1；From transmission time
Be spaced TTI 32 start Transmission Time Interval span in, UE receive and decode be carried on PHICH with HARQ processes 2 the 2nd
The related ack/nack ACK/NACK responses of secondary transmission attempt；2 transmission ending of HARQ processes.
In the Transmission Time Interval span terminated to Transmission Time Interval TTI 39 since Transmission Time Interval TTI 33,
The 3rd transmission attempt RV of Node-B receiver HARQ processes 1 of enhancing, and according to HARQ processes 1 the 1st transmission attempt RV, HARQ into
The 2nd transmission attempt RV of journey 1, the 1st transmission attempt RV and the HARQ process 2 of the 3rd transmission attempt RV, HARQ process 2 of process 1
2nd time transmission attempt RV decodes UL transmission blocks.In Transmission Time Interval TTI 40, the node B of enhancing is sent and HARQ processes 1
3rd ACK/NACK response of the transmission attempt in relation to ack/nack sends ACK certainly and answers if UL transmission blocks are correctly decoded
It answers, otherwise, sends negative NACK responses.In Transmission Time Interval span since Transmission Time Interval TTI 40, UE is received
And decode the ack/nack ACK/NACK responses related with the 3rd transmission attempt of HARQ processes 1 being carried on PHICH；HARQ
1 transmission ending of process.
If the node B of enhancing requires the subsequent corresponding uplink of the process change of transmission attempt again of some HARQ process to award
Information is given, then needs to send UL grant informations related with the HARQ processes again by PDCCH.For example, it is assumed that enhancing
Node B requires the UL of the 1st transmission attempt of the 2nd transmission attempt of HARQ processes 1 and the 3rd transmission attempt and HARQ processes 1 to award
Information difference is given, the node B of enhancing also needs additionally to execute following operation：In Transmission Time Interval TTI 13, the node B of enhancing
Send UL grant informations related with HARQ processes 1 again by PDCCH.UE also needs additionally to execute following operation：From when transmission
Between interval TTI 13 start in the Transmission Time Interval span that terminates to TTI 16, UE is received and is decoded and is carried on PDCCH
With HARQ processes 1 in relation to UL grant informations, then, according to the UL grant informations of above-mentioned newest reception replace preserve with HARQ into
Journey 1 is in relation to UL grant informations.
According to the present embodiment it is found that the node B of enhancing has following characteristics：Assuming that the node B of enhancing has been correctly decoded UL
Transmission block, and ACK responses certainly related with some HARQ process are had sent, if another HARQ process not yet terminates,
The node B then enhanced will also send ACK responses certainly related with another HARQ process, to terminate UL transmission blocks respectively two
HARQ transmission process in a HARQ processes.
In the present invention, although HARQ processes shown in attached drawing are transmitted since number is the TTI of " 1 ", this
Field technology personnel should be appreciated that exemplary only explanation in figure, HARQ processes can be passed since the TTI of any number
It send, be not limited to HARQ processes in the present invention transmits since initial TTI.
In the present invention, base station sends same UL transmission blocks by controlling UE using more than two HARQ processes, and passes through
Controlling transmission time interval TTI boundlings length and the maximum of HARQ processes attempt the number of transmissions, and enhanced uplink is covered in realization
The control of lid not only increases the covering performance of UL, also achieves the flexibility of resource allocation.It should be noted that not rushing
In the case of prominent, each feature in the embodiment of the present invention and embodiment mutually can be combined arbitrarily.
Fig. 6 is the composed structure schematic diagram for the device that the enhanced uplink of the embodiment of the present invention covers, as shown in fig. 6,
Originally the device of exemplary enhanced uplink covering includes：
Control unit 60 sends same UL transmission blocks for controlling UE using more than two HARQ processes UE.
Fig. 7 is the composed structure schematic diagram for the device that another enhanced uplink of the embodiment of the present invention covers, such as Fig. 7 institutes
Show, on the basis of the device of enhanced uplink shown in Fig. 6 covering, the device of enhanced uplink of the invention covering is also
May include decoding unit 61 and transmission unit 62, wherein：
Decoding unit 61, the UL transmission blocks for decoding HARQ processes；
Transmission unit 62, for after being correctly decoded the UL transmission blocks of certain HARQ process, being sent and described two to the UE
A above HARQ processes terminate instruction correspondingly.Above-mentioned control unit 60 is additionally operable to, from the transmission unit 62 to described
UE is sent and described two above one-to-one UL grant informations of HARQ processes, controls the UE and uses more than described two
HARQ processes send the same UL transmission blocks.
The UL grant informations include：
Time/frequency source block distribution information, Modulation and Coding Scheme, power control command and HARQ process sets in single TTI
Bundle flag.
The transmission unit 62 is sent and described two above one-to-one UL grant informations of HARQ processes to the UE
Before, it is additionally operable to, following at least one information is notified by the UE by proprietary system message：TTI boundlings enabler flags, boundling
The redundancy versions RV that length and continuous boundling subframe related with TTI boundlings are sent.
The transmission unit 62 is additionally operable to, and letter is authorized in the UL for certain the HARQ process for belonging to described two above HARQ processes
When breath changes, laterally the UE sends the UL grant informations after change related with certain described HARQ process to the network.
On the basis of the device that the enhanced uplink shown in Fig. 6 or Fig. 7 covers, enhanced uplink of the invention covering
Device further include：
Receiving unit is sent for receiving the UE by belonging to certain HARQ process of described two above HARQ processes
Redundancy versions RV related with the UL transmission blocks；
The decoding unit 61 is additionally operable to, and is sent by described two above HARQ processes using the received UE
The RV of all HARQ processes related with the UL transmission blocks decode the UL transmission blocks, and in setting TTI to passing through
The message whether transmission unit feeds back from successfully decoded related with certain described HARQ process to the UE.
It will be appreciated by those skilled in the art that the processing that Fig. 6 and the device of enhanced uplink shown in Fig. 7 covering are related to
The function of unit can be realized by hardware circuit, or executed corresponding software by processor and realized.Above-mentioned each processing unit
Function understands in combination with the description of the related embodiment of the method for aforementioned enhanced uplink covering of the present invention.
The present invention also describes a kind of base station, and the base station includes the dress of Fig. 6 or shown in Fig. 7 enhanced uplinks covering
It sets.
The base station of the present invention generally enhances node B.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (13)
1. a kind of method of enhanced uplink covering, which is characterized in that the method includes：
Network controls user equipment (UE) sends same uplink using more than two hybrid automatic repeat-request HARQ processes
UL transmission blocks；
The network controls UE sends same UL transmission blocks using two or more HARQ processes, is：The network side pass through to
The UE send with described two above one-to-one UL grant informations of HARQ processes, control the UE use it is described two with
Upper HARQ processes send the same UL transmission blocks, wherein the UL grant informations include：When single Transmission Time Interval TTI
Frequency resource block assignment information, Modulation and Coding Scheme, power control command and HARQ process sets bundle flags.
2. according to the method described in claim 1, it is characterized in that, the method further includes：
The network side is sent with described two above HARQ processes one by one after being correctly decoded the UL transmission blocks to the UE
Corresponding termination instruction.
3. according to the method described in claim 1, it is characterized in that, the network laterally the UE send with it is described two more than
Before the one-to-one UL grant informations of HARQ processes, the method further includes：
Following at least one information are notified the UE by the network side by proprietary system message：
Redundancy versions transmitted by TTI boundlings enabler flags, boundling length and continuous boundling subframe related with TTI boundlings
RV。
4. according to the method described in claim 1, it is characterized in that, the HARQ process sets bundle flag indicates current HARQ process
UL grant informations whether with the corresponding identical UL transmission blocks of the UL grant informations of front HARQ processes.
5. according to any one of Claims 1-4 the method, which is characterized in that the method further includes：
When belonging to the change of the UL grant informations of certain HARQ process of described two above HARQ processes, the network is laterally described
UE sends the UL grant informations after change related with certain described HARQ process.
6. according to any one of Claims 1-4 the method, which is characterized in that the method further includes：
The network side receive the UE by belong to described two above HARQ processes certain HARQ process send with institute
After stating the related redundancy versions RV of UL transmission blocks, sent by described two above HARQ processes using the received UE
All RVs related with the UL transmission blocks decode the UL transmission blocks, and setting TTI to UE feedbacks with it is described certain
Message whether HARQ processes related successfully decoded.
7. method according to any one of claims 1 to 4, which is characterized in that the network side is base station.
8. a kind of device of enhanced uplink covering, which is characterized in that described device includes：
Control unit sends same UL transmission blocks for controlling UE using more than two HARQ processes UE；
Described control unit is additionally operable to, and is sent from the transmission unit to the UE a pair of with described two above HARQ processes one
The UL grant informations answered control the UE and send the same UL transmission blocks using described two above HARQ processes, wherein institute
Stating UL grant informations includes：Time/frequency source block distribution information, Modulation and Coding Scheme, power control command in single TTI and
HARQ process sets bundle flags.
9. device according to claim 8, which is characterized in that described device further includes decoding unit and transmission unit,
In：
Decoding unit, the UL transmission blocks for decoding HARQ processes；
Transmission unit is sent and described two above HARQ after being correctly decoded the UL transmission blocks of certain HARQ process to the UE
Process terminates instruction correspondingly.
10. device according to claim 8, which is characterized in that the transmission unit to the UE send with it is described two
It before the above one-to-one UL grant informations of HARQ processes, is additionally operable to, is believed following at least one by proprietary system message
Breath notifies the UE：
The redundancy versions that TTI boundlings enabler flags, boundling length and continuous boundling subframe related with TTI boundlings are sent
RV。
11. according to claim 8 to 10 any one of them device, which is characterized in that the transmission unit is additionally operable to, and is being belonged to
When the UL grant informations of certain HARQ process of described two above HARQ processes change, network laterally the UE send with it is described certain
UL grant informations after the related change of HARQ processes.
12. according to claim 8 to 10 any one of them device, which is characterized in that described device further includes：
Receiving unit, for receive the UE by belong to described two above HARQ processes certain HARQ process send with
The related redundancy versions RV of the UL transmission blocks；
Decoding unit is additionally operable to, all and institute sent by described two above HARQ processes using the received UE
The RV for stating the related all HARQ processes of UL transmission blocks decodes the UL transmission blocks, and single to the transmission is passed through setting TTI
Message whether member feeds back from successfully decoded related with certain described HARQ process to the UE.
13. a kind of base station, which is characterized in that the base station includes that any one of claim 8 to 12 enhanced uplink is covered
The device of lid.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210069078.XA CN103313270B (en) | 2012-03-15 | 2012-03-15 | The method and device of enhanced uplink covering, base station |
| PCT/CN2012/077162 WO2013135015A1 (en) | 2012-03-15 | 2012-06-19 | Enhanced uplink coverage method, device and base station |
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| CN201210069078.XA CN103313270B (en) | 2012-03-15 | 2012-03-15 | The method and device of enhanced uplink covering, base station |
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| US20150085796A1 (en) * | 2013-09-20 | 2015-03-26 | Qualcomm Incorporated | Flexible operation of enhanced tti-bundling modes in lte |
| US9608774B2 (en) * | 2013-10-03 | 2017-03-28 | Qualcomm Incorporated | Opportunistic HARQ repetition for coverage enhancement |
| CN104780549A (en) * | 2014-01-10 | 2015-07-15 | 夏普株式会社 | Physical channel configuration method, base station and user equipment |
| CN104022856B (en) * | 2014-06-23 | 2017-09-29 | 天津大学 | Reduce the TTI binding method of traffic delay in a kind of TD LTE systems |
| US9894637B2 (en) * | 2015-03-23 | 2018-02-13 | Qualcomm Incorporated | Low cost paging |
| CN108270527A (en) | 2017-01-04 | 2018-07-10 | 电信科学技术研究院 | A kind of hybrid automatic repeat-request HARQ transmission method and relevant device |
| WO2018141643A1 (en) * | 2017-02-03 | 2018-08-09 | Telefonaktiebolaget Lm Ericsson (Publ) | Retransmission handling at tti length switch |
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| CN103313270A (en) | 2013-09-18 |
| WO2013135015A1 (en) | 2013-09-19 |
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