CN106506129A - The ascending transmission method of relaying return link - Google Patents
The ascending transmission method of relaying return link Download PDFInfo
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- CN106506129A CN106506129A CN201510564379.3A CN201510564379A CN106506129A CN 106506129 A CN106506129 A CN 106506129A CN 201510564379 A CN201510564379 A CN 201510564379A CN 106506129 A CN106506129 A CN 106506129A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0055—Physical resource allocation for ACK/NACK
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
Abstract
The present invention provides a kind of ascending transmission method of relaying return link, and the method includes：Via node receives the Downlink Control Information being carried in the physical downlink control channel PDCCH of return link that base station sends in wireless sub-frame n, and k-th wireless sub-frame n+k sends the passback uplink service corresponding to the Downlink Control Information being carried on PUSCH to base station after wireless sub-frame n.Said method can neatly dynamic configuration return link uplink, it is to avoid the uplink with access link is interfered, being capable of preferably compatible existing system.
Description
Technical field
The present invention relates to wireless communication technology, and in particular to the ascending transmission method of relaying return link.
Background technology
In LTE (Long Term Evolution, long evolving system) system, LTE-A (LTE-Advanced, advanced long evolving system) is the evolution version of LTE.One characteristic of lte-a system is to introduce relaying section station (Relay Node, RN) in systems.The introducing of relay station, improves covering quality, the coverage of signal to a certain extent, improves power system capacity.The purpose of relaying introducing is exactly covered to improve system, power system capacity, there is provided flexible network design and reduction network construction cost.Main application scenarios include：Focus is covered, mends blind, in-door covering, rural area covering, emergency communication, wireless backhaul and group movement etc..
Via node RN, as a special node, is both terminal and base station.Relaying itself uses return link to be communicated as a terminal of macro base station eNB first, which is scheduled together with the other-end M-UE under macro base station, and relay and the R-UE in oneself coverage can be scheduled, using access link with oneself setting up cell as a micro-base station simultaneously.Here M-UE and R-UE is the common terminal of identical, and the base station that simply accesses is different.It is access link Access link generally to define link of the user equipment (User Equipment, UE) and via node between, and the link between via node and network side is return link backhaul link.And interfering exactly between access link and return link bring many difficult problems to Standardization Research, in order to solve this problem, the trunk type that supports in LTE-A has three kinds, and Outband relayings, inband simultaneously need the relaying of resource division, inband not to need resource to divide.Outband relayings are exactly access link and return link frequency division avoiding interference, and it is exactly that access link and return link use similar frequency bands that inband does not need resource division, but isolates to avoid interfering by antenna, belongs to the means in engineering.Discussed in agreement at present and formulate is inband the relaying for needing resource division, that is, using similar frequency bands between access link and return link, and time-multiplexed mode.I.e. for the inband relayings for needing resource to divide, in order to avoid interfering for Access link and Backhaul link, the transmission of eNB-RN and RN-UE adopts time division multiplex (Time Division Multiplexing, abbreviation TDM) mode, that is RN adopts semiduplex mode of operation, in down direction, or at a time RN can only receive the data from eNB, or data can only be sent to R-UE；In up direction, or RN can only send out data to eNB, or the data from R-UE can only be received.In addition realize that backhaul links also need to ensure that original hybrid automatic repeat-request (Hybrid Automatic Repeat reQuest, abbreviation HARQ) mechanism is unaffected.So，In order to solve this problem，Last third generation partner program (3rd Generation Partnership Project，Abbreviation 3GPP) determine using multicast service be located multicast/multicast single-frequency network network (Multimedia Broadcast multicast service Single Frequency Network，Abbreviation MBSFN) subframe to be being downlink physical DSCH Downlink Shared Channel (the Physical Downlink Shared Channe of backhaul，Abbreviation PDSCH)/Physical Downlink Control Channel (Physical Downlink Control Channel，Abbreviation PDCCH) transmission，And only using MBSFN in PDSCH OFDM (Orthogonal Frequency Division Multiplexing，Abbreviation OFDM) symbolic component，Because even being MBSFN sub-frame，PDCCH parts eNB therein also needs to issue all M-UE as usual uplink scheduling authorization Downlink Control Information (Downlink Control Information，Abbreviation DCI)，And place PHICH feedback channels.And the MBSFN sub-frame used by multicast service is reserved and out will not be used to PDSCH unicast services, so the PDSCH symbolic components using MBSFN sub-frame can be avoided and the unicast service in existing network, the namely descending scheduling business between RN-UE, generation are interfered, as shown in Figure 1.
As the resource of the Backhaul link and Access link at RN ends is multiplexed in the way of TDM, that is to say, that the resource part at RN ends is used as Backhaul link, and a part is used as Access link.So for TDD system, it is clear that some time division duplexs (Time Division Duplexing, abbreviation TDD) sub-frame resources can be made nervous.For TDD system, in the frame structure configuration of TDD, 0,1,2,5,6 subframe of subframe of frame in that 10ms is wireless is to be configured to MBSFN sub-frame.Therefore can be used to backhaul transmission is used as the subframe only subframe 3,4,7,8,9 of backhaul transmission, and limit 10ms radio frames at most 4 MBSFN sub-frames of configuration during actual disposition.
The descending PDSCH/PDCCH transmission for doing return link using MBSFN sub-frame transmission can bring following defect：
1st, in order to avoid the impact to existing HARQ sequential and flow process, existing descending backhaul selects to carry out in MBSFN sub-frame, belongs to and is semi-statically configured, very limited on the time point of data transfer, have impact on the time delay of data forwarding, thus for the stronger business effect of real-time bad.
2 simultaneously because the frame number for backhaul is limited, under the maximum configured of existing protocol also can only most 3 MBSFN sub-frames of radio frames to be used for backhaul descending, most 2 sub-frame of uplink are up for backhaul, and which is resource-constrained, causes the transfer rate of backhaul to be necessarily limited
3rd, in Backhaul link designs in order to save channel resource, eliminate PHICH channels, this causes up Backhaul carry out uplink synchronous non-self-adapting HARQ re-transmissions, can only carry out having the adaptive H RAQ of uplink authorization to retransmit, and this also increases the resource pressure of PDCCH channels.
4th, the resource distribution mode of the R-PDCCH of existing backhaul does not adopt the CCE methods of salary distribution of original PDCCH, this does not only result in the resource distribution mode that will be redefined and design when R-PDCCH transmission is authorized, and the resource mapping method for also resulting in the PUCCH feedback resource relevant with downlink transfer needs to redefine.Which increase complexity.
And in following 5G systems, need the transfer rate for improving user on a large scale by the way of super-intensive networking, improve the space reuse degree of frequency resource, and reduce the expense and time delay of the switching of user's cell, then substantial amounts of Pico Cell/small cell/Relay/ Home eNodeB is likely to occur under a macro station or a virtual subdistrict, seamless coverage is carried out come the region larger in the way of Dan Zhan little is covered with the intensive cloth station of multiple spot, only tens meters of covering radius even tens of rice at one of them micro- station or slightly station.So intensive networking, necessarily involves the problem how return link is connected to core net.If all adopting this preferable backhaul modes of optical fiber, networking cost bear.In addition for some interim focuses are covered, or blind area covers temporarily, and interim hypothesis optical fiber cost is too high, does not also reach quick cloth station, the demand of quick adjustment site location.Finally, more flexible network construction form may be taken in 5G, such as endless is resident in the case where certain small cell is found, then the Temporarily Closed website, then the wasting of resources then occurs in the special optic fibre link set up for the cell.So new transmission demand, new networking mode is required for more flexibly, the higher wireless backhaul of speed.And obviously the backhaul designs under the Relay scenes in existing 4G technology are difficult to meet demand.
Content of the invention
(1) technical problem for solving
For the deficiencies in the prior art, the present invention provides a kind of ascending transmission method of return link, with the uplink of neatly dynamic configuration return link, it is to avoid the uplink with access link is interfered.
(2) technical scheme
For realizing that object above, the present invention are achieved by the following technical programs：
The present invention provides a kind of ascending transmission method of relaying return link, including：Via node receives the Downlink Control Information being carried in the physical downlink control channel PDCCH of return link that base station sends in wireless sub-frame n, and k-th wireless sub-frame n+k sends the passback uplink service corresponding to the Downlink Control Information being carried on Physical Uplink Shared Channel PUSCH to base station after wireless sub-frame n, wherein
For radio frames use uplink-downlink configuration 0, when n=0,1,5 or 6, k=8；
For radio frames use uplink-downlink configuration 1, during n=1 or 6, k=7, n=4 or when 9, k=8；
For radio frames use uplink-downlink configuration 2, during n=1 or 6, k=6；
For radio frames use uplink-downlink configuration 3, when n=7,8 or 9, k=5；
For radio frames use uplink-downlink configuration 4, during n=7 or 8, k=5；
When uplink-downlink configuration 5, n=7 are used for radio frames, k=5；
For radio frames use uplink-downlink configuration 6, when n=0,5,6 or 9, k=8, during n=1, k=11.
Alternatively, methods described also includes：For radio frames use uplink-downlink configuration 0, if the MSB of UL index field of the via node in the uplink authorization being carried on PDCCH that wireless sub-frame n is received is 1, or the physics hybrid automatic retransmission that is carried on received in subframe 0 or 5 indicates the I on channel PHICHPHICH=0, then via node can be in the corresponding passback uplink service of subframe n+k transmission, wherein IPHICHFor PHICH channel indexes.
Alternatively, methods described also includes：For radio frames use uplink-downlink configuration 0, if the LSB of UL index field of the via node in the uplink authorization being carried on PDCCH that wireless sub-frame 0 or 5 is received is 1, or the I being carried on PHICH received in subframe 0 or 5PHICH=1, then via node is in the corresponding passback uplink service of subframe n+9 transmission, wherein IPHICHFor PHICH channel indexes.
Alternatively, methods described also includes：For radio frames use uplink-downlink configuration 0, if the LSB of UL index field of the via node in the uplink authorization being carried on PDCCH that wireless sub-frame 1 or 6 is received is 1, or the I being carried on PHICH received in subframe 1 or 6PHICH=1, then via node is in subframe n+9 transmission uplink service, wherein IPHICHFor PHICH channel indexes.
Alternatively, methods described also includes：For radio frames use uplink-downlink configuration 0, if the MSB and LSB of UL index field of the via node in the uplink authorization being carried on PDCCH that wireless sub-frame 0 or 5 is received are 1, via node all sends corresponding passback uplink service in subframe n+k and n+9.
Alternatively, methods described also includes：For radio frames use uplink-downlink configuration 0, if the MSB and LSB of UL index field of the via node in the uplink authorization being carried on PDCCH that wireless sub-frame 1 or 6 is received are 1, via node all sends uplink service in subframe n+k and n+11.
Alternatively, methods described also includes：
Via node sends the uplink service for being carried on Physical Uplink Shared Channel PUCCH in wireless sub-frame m to base station, then receive the physics hybrid automatic retransmission configured information being carried on PHICH in wireless sub-frame m+j；
For radio frames use uplink-downlink configuration 2, during n=2 or 7, k=4；
For radio frames use uplink-downlink configuration 3, when n=2,3 or 4, k=5；
For radio frames use uplink-downlink configuration 4, during n=2 or 3, k=5；
When uplink-downlink configuration 5, n=2 are used for radio frames, k=5.
Alternatively, methods described also includes：
For radio frames use uplink-downlink configuration 0, using 5 hybrid automatic retransmission HARQ processes；
For radio frames use uplink-downlink configuration 1, using 8 HARQ processes；
For radio frames use uplink-downlink configuration 2, using 11 HARQ processes；
For radio frames use uplink-downlink configuration 3, using 10 HARQ processes；
For radio frames use uplink-downlink configuration 4, using 13 HARQ processes；
For radio frames use uplink-downlink configuration 5, using 16 HARQ processes；
For radio frames use uplink-downlink configuration 6, using 7 HARQ processes.
Alternatively, methods described also includes：
Via node sends the passback uplink service being carried on PUSCH at the first moment to base station, and the access uplink service being carried on PUSCH that its terminal R-UE for covering sends in the second reception, first moment are different from second moment.
Alternatively, methods described also includes：
Via node receives the access uplink service being carried on PUSCH that its terminal R-UE for covering sends while sending the passback uplink service being carried on PUSCH to base station, have a certain amount of Resource Block returning uplink service and accessing to leave unused between uplink service.
(3) beneficial effect
The present invention at least has following beneficial effect：Can neatly dynamic configuration return link uplink, it is to avoid the uplink with access link is interfered, being capable of preferably compatible existing system.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, accompanying drawing to be used needed for embodiment or description of the prior art will be briefly described below, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is to produce, in existing system, the schematic diagram for interfering；
Fig. 2 is the flow chart of the embodiment of the method that the present invention is provided；
Fig. 3 is the uplink scheduling sequential relationship schematic diagram of the relaying passback that the present invention is enumerated and access link.
Specific embodiment
Accompanying drawing in below in conjunction with the embodiment of the present invention, to the embodiment of the present invention in technical scheme be clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiment.Embodiment in based on the present invention, the every other embodiment obtained under the premise of creative work is not made by those of ordinary skill in the art, belongs to the scope of protection of the invention.
With scheduling time granularity in the embodiment of the present invention, that is Transmission Time Interval (Transmission Time Interval, abbreviation TTI) the resource flexible allocation that solves between backhaul and access link for time granularity, transmission time points flexible configuration, and interference problem between the two, resource complete dynamically distributes backhaul and access link between is then needed, it is to avoid static configuration backhaul subframe or resource.Processing mode is as follows：
Sub-frame of uplink (or is transmitted corresponding scheduling instance and is shifted to an earlier date by the time interval increased between uplink scheduling authorization and uplink traffic transmission by artificial, or the uplink moment corresponding to scheduling instance is delayed), and according to circumstances adjust the follow-up time interval transmitted upstream between feedback, or add redundancy process, ensure that normal HARQ is continuously transmitted, form new HARQ sequential relationships.The effect being finally reached is that backhaul links are delayed at the uplink moment corresponding to phase in the same time uplink scheduling relative to access links, or the scheduling instance of the backhaul corresponding to the uplink of synchronization more shifts to an earlier date.
After possessing These characteristics, eNB or upper level RN nodes (when RN nodes can be linked under another RN node the wireless relay for proceeding multi-hop) can be known when in advance equivalent to RN then and oneself have business to transmit, prepare when dispatching to following UE in advance, either using time-division TDM mode or frequency division FDM modes, the scheduled transmission of access link is made to avoid the transmission on backhaul.
The flow chart that Fig. 2 shows the ascending transmission method of the relaying return link of present invention offer, as shown in Fig. 2 the ascending transmission method of the relaying return link of the present embodiment may include the steps：
201st, via node receives the Downlink Control Information being carried on the PDCCH of return link that base station sends in wireless sub-frame n,
202nd, after wireless sub-frame n, k-th wireless sub-frame n+k sends the passback uplink service corresponding to the Downlink Control Information being carried on Physical Uplink Shared Channel PUSCH to base station.
It should be noted that in the present embodiment, n, k take positive integer；
For radio frames use uplink-downlink configuration 0, when n=0,1,5 or 6, k=8；
For radio frames use uplink-downlink configuration 1, during n=1 or 6, k=7, n=4 or when 9, k=8；
For radio frames use uplink-downlink configuration 2, during n=1 or 6, k=6；
For radio frames use uplink-downlink configuration 3, when n=7,8 or 9, k=5；
For radio frames use uplink-downlink configuration 4, during n=7 or 8, k=5；
When uplink-downlink configuration 5, n=7 are used for radio frames, k=5；
For radio frames use uplink-downlink configuration 6, when n=0,5,6 or 9, k=8, during n=1, k=11.
For example, for radio frames use uplink-downlink configuration 0, if the MSB of UL index field of the via node in the uplink authorization being carried on PDCCH that wireless sub-frame n is received is 1, or the physics hybrid automatic retransmission that is carried on received in subframe 0 or 5 indicates the IPHICH=0 on channel PHICH, then via node can send corresponding passback uplink service in subframe n+k, and wherein IPHICH is PHICH channel indexes.
Realize in scene in another kind, for radio frames use uplink-downlink configuration 0, if the LSB of UL index field of the via node in the uplink authorization being carried on PDCCH that wireless sub-frame 0 or 5 is received is 1, or the I being carried on PHICH received in subframe 0 or 5PHICH=1, then via node is in the corresponding passback uplink service of subframe n+9 transmission, wherein IPHICHFor PHICH channel indexes.
Realize in scene at second, for radio frames use uplink-downlink configuration 0, if the LSB of UL index field of the via node in the uplink authorization being carried on PDCCH that wireless sub-frame 1 or 6 is received is 1, or the I being carried on PHICH received in subframe 1 or 6PHICH=1, then via node is in subframe n+9 transmission uplink service, wherein IPHICHFor PHICH channel indexes.
Realize in scene at the third, for radio frames use uplink-downlink configuration 0, if the MSB and LSB of UL index field of the via node in the uplink authorization being carried on PDCCH that wireless sub-frame 0 or 5 is received are 1, via node all sends corresponding passback uplink service in subframe n+k and n+9.
Realize in scene at the 4th kind, for radio frames use uplink-downlink configuration 0, if the MSB and LSB of UL index field of the via node in the uplink authorization being carried on PDCCH that wireless sub-frame 1 or 6 is received are 1, via node all sends uplink service in subframe n+k and n+11.
In addition, via node sends the uplink service for being carried on Physical Uplink Shared Channel PUCCH in wireless sub-frame m to base station, then the physics hybrid automatic retransmission configured information being carried on PHICH is received in wireless sub-frame m+j；M, j take positive integer；
For radio frames use uplink-downlink configuration 2, during n=2 or 7, k=4；
For radio frames use uplink-downlink configuration 3, when n=2,3 or 4, k=5；
For radio frames use uplink-downlink configuration 4, during n=2 or 3, k=5；
When uplink-downlink configuration 5, n=2 are used for radio frames, k=5.
Further, for radio frames use uplink-downlink configuration 0, using 5 hybrid automatic retransmission HARQ processes；
For radio frames use uplink-downlink configuration 1, using 8 HARQ processes；
For radio frames use uplink-downlink configuration 2, using 11 HARQ processes；
For radio frames use uplink-downlink configuration 3, using 10 HARQ processes；
For radio frames use uplink-downlink configuration 4, using 13 HARQ processes；
For radio frames use uplink-downlink configuration 5, using 16 HARQ processes；
For radio frames use uplink-downlink configuration 6, using 7 HARQ processes.
During implementing, via node sends the passback uplink service being carried on PUSCH at the first moment to base station, the access uplink service being carried on PUSCH that its terminal R-UE for covering sends in the second reception, first moment are different from second moment.
Alternatively, via node receives the access uplink service being carried on PUSCH that its terminal R-UE for covering sends while sending the passback uplink service being carried on PUSCH to base station, have a certain amount of Resource Block returning uplink service and accessing to leave unused between uplink service.
It is described as follows for the new ascending HARQ sequential relationship of Backhaul links.
Table one：
k for TDD configurations 0-6
In the present embodiment, as shown in Table 1, wherein, subframe n issues PDCCH to the PDCCH-PUSCH sequential relationships of backhaul links, then subframe n+k send PUSCH uplink traffic transmissions, the digital value with underscore from be different in prior art.
Above-mentioned table one kind for TDD time slot proportions 0, a simply part for sequential relationship, for the complete sequential relationship of TDD 0 individually should redefine as follows：
1) for TDD 0, if the MSB of UL index fields of the UE in the PDCCH uplink authorizations that subframe n is received is set to 1, or the corresponding I of PHICH received in subframe 0 or 5PHICH=0, then UE can be in the corresponding PUSCH of subframe n+k transmission.(IPHICHFor PHICH channel indexes, value 0 or 1)
2) for TDD 0, if the LSB of UL index fields of the UE in the PDCCH uplink authorizations that subframe 0 or 5 is received is set to 1, or the corresponding I of PHICH received in subframe 0 or 5PHICH=1, then UE can be in the corresponding PUSCH of subframe n+9 transmission.
3) for TDD 0, if the LSB of UL index fields of the UE in the PDCCH uplink authorizations that subframe 1 or 6 is received is set to 1, or the corresponding I of PHICH received in subframe 1 or 6PHICH=1, then UE can be in the corresponding PUSCH of subframe n+11 transmission.
4) for TDD 0, if the MSB and LSB of UL index fields of the UE in the PDCCH uplink authorizations that subframe 0 or 5 is received are set to 1, UE can all send corresponding PUSCH in subframe n+k and n+9.
5) for TDD 0, if the MSB and LSB of UL index fields of the UE in the PDCCH uplink authorizations that subframe 1 or 6 is received are set to 1, UE can all send corresponding PUSCH in subframe n+k and n+11.
It is described as follows for Backhaul link PUSCH-PHICH sequential relationships.
Table two：
kPHICHfor TDD
In table two, which kind of TDD time slot proportion no matter is in, UE sends out data in subframe n in PUSCH, unifies according to above-mentioned table two, expect descending PHICH message to be received in n+kPHICH.It is then the numerical value different with existing protocol that there is in table two underscore numerical value.
Ascending HARQ course number for Backhaul links is described as follows.
Table three：
Number of synchronous UL HARQ processes for TDD
It is that the new HARQ for carrying out uplink on backhaul links enters the demand of number of passes in table three, the numerical value in table three with underscore is the different numerical value of relative existing protocol.New definition has been carried out to which in the present embodiment：
Up redundancy process：Refer to relative to agreement original enter the process that newly increases of number of passes.So-called HARQ processes be carrying out authorizing-transmit to some packet-feed back-when there is various time delay spacings between sub-authorization again, continuously transmit to can guarantee that, and the data processing resource requirement of the parallel transmission for defining and flow process.And in LTE system, time delay spacing is mainly the data receiver processing delay of propagation delay time, base station and terminal, algorithm process time delay and group bag transmission delay, and these are once it is determined that then required HARQ number of processes is determined that.But due to new sequential relationship used in backhaul links, although the processing delay and air interface transmission time delay on hardware and software, these objective time delays are all not changed in, but artificial increased certain event handling time interval, so have led to guarantee to be continued to continuously transmit, then need increase HARQ to enter number of passes.Exactly because original according to objective capability, existing enter number of passes fully meet requirement, so the process for newly increasing is referred to as redundancy process.
Thus, the mode that the uplink moment corresponding to scheduling instance is delayed is used in the backhaul sequential relationships of TDD proportionings 0,1,6.Relative to existing protocol, PDCCH scheduling instances are constant, and the PUSCH transmission moment is delayed, and PUSCH transmission-PHICH feedback sequential relationships are constant.But required enter number of passes increased than former agreement, with redundancy process.Further, since the particularity of TDD 0, the relatively former agreement of PDCCH-PUSCH sequential relationships has delayed two sub-frame of uplink, so redundancy enters number of passes for 2, and the redundancy of TDD 1,6 is entered number of passes and there was only 1.
Sub-frame of uplink is used in the backhaul sequential relationships design of TDD proportionings 2,3,4,5 and transmits corresponding scheduling instance mode in advance.Relative to former agreement, the change of PDCCH scheduling instances shifts to an earlier date, and the PUSCH transmission moment is constant, and PUSCH transmission-PHICH feedback sequential relationships need change adjustment.But can ensure that whole HARQ loopback delays keep constant, it is not necessary to increase new HARQ and enter number of passes.
Especially, for the joint uplink scheduling of backhaul and access links：
Due to the redesign of above-mentioned backhaul links (eNB is to RN) sequential relationship, the effect being finally reached is, backhaul links are delayed at the uplink moment corresponding to phase in the same time uplink scheduling relative to access links, or the scheduling instance of the backhaul corresponding to the uplink of synchronization more shifts to an earlier date.It means that, when certain scheduling instance, access link (eNB to M-UE, and RN is to R-UE) can know when being scheduled the PUSCH transmission moment corresponding to the scheduling, the backhaul links dispatched before by its PUSCH resource occupy how many.When the access links at so moment are scheduled, then the traffic channel resource that backhaul links institute forward scheduling takes can be avoided with autotelic.
In time division way TDM, backhaul dispatches the PUSCH transmission at certain moment, and all for moment PUSCH resources are all taken, the access link scheduling moment, if it find that the existing backhaul scheduling of PUSCH transmission moment, then the moment be not scheduled.Under this mode, do not interfered between access link and the PUSCH transmission of return link completely.
In frequency division manner FDM, backhaul dispatches the PUSCH transmission at certain moment, only distributes moment part PUSCH resources, so the access link scheduling moment, if it find that the existing backhaul scheduling of PUSCH transmission moment, then can distribute remaining PUSCH resources.The PUSCH of the access link of R-UE being received as RN is carried out at RN simultaneously, and RN being sent to the PUSCH of the return link of eNB, actually co-located interference between the two is disturbed very big.So synchronization staggers by frequency division while both PUSCH transmission resources, interfere to further reduce, can determine to make to isolate to reserving certain PUSCH RB resources between the two by dispatching algorithm.
For in conjunction with Fig. 3, Fig. 3 shows the uplink scheduling sequential relationship schematic diagram of relaying passback and access link, and is illustrated with time slot proportion 2 in figure 3.
The transmission method of the embodiment of the present invention, can meet the transmission requirement to return link in 5G, have the advantage that：
1) transmission of higher rate can be supported；Backhaul transmission can be carried out using identical sub-frame of uplink number in the normal time slot proportions of TDD with maximum, resource is unrestricted.
2) flexible transmission time points configuration can be supported, high delay requirement is met；Backhaul uplink can be carried out using any one sub-frame of uplink in the normal time slot proportions of any one TDD, transmission time points are unrestricted.
3) most flexible Resource Allocation Formula, the transfer resource between backhaul link and access link needed for complete dynamic regulation in scheduling granularity level can be truly realized, or the return link for being configured is not when having use demand, resource can be released to other users flexibly or base station uses, such as certain micro- station of Temporarily Closed；
4), on the basis of not affecting on the HARQ sequential and transfer process of existing ordinary terminal, the traffic channel transmission preferably solved between backhaul and access links interferes problem.There is compatibility well to existing system.
The above-mentioned invention of understanding preferably, is described as follows to table six using table four to the sequential relationship that access link in existing LTE protocol is adopted below.
Table four：The PDCCH-PUSCH sequential of access links
k for TDD configurations 0-6
In table four, for TDD 0, if the MSB of the UL index of PDCCH that UE is received in subframe n is set to 1, or the corresponding I of PHICH received in subframe 0 or 5PHICH=0, then UE can be in the corresponding PUSCH of subframe n+k transmission.
For TDD 0, if the LSB of the UL index of PDCCH that UE is received in subframe n is set to 1, or the corresponding I of PHICH received in subframe 0 or 5PHICH=1, or receive PHICH in subframe 1 or 6, then UE can send corresponding PUSCH in subframe n+7.
For TDD 0, if the MSB and LSB of the UL index of PDCCH that UE is received in subframe n are set to 1, UE and can send corresponding PUSCH in subframe n+k and n+7.
Table five：The PUSCH-PHICH sequential of access links
kPHICHfor TDD
Table six：The ascending HARQ course number of access links
Number of synchronous UL HARQ processes for TDD
It should be noted that, herein, such as first and second or the like relational terms are used merely to make a distinction an entity or operation with another entity or operation, and not necessarily require or imply there is any this actual relation or order between these entities or operation.And, term " including ", "comprising" or its any other variant are intended to including for nonexcludability, so that a series of process, method, article or equipment including key elements not only includes those key elements, but also other key elements including being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.In the absence of more restrictions, the key element for being limited by sentence "including a ...", it is not excluded that also there is other identical element in process, method, article or the equipment for including the key element.
Above example only in order to technical scheme to be described, rather than a limitation；Although being described in detail to the present invention with reference to the foregoing embodiments, it will be understood by those within the art that：Which still can be modified to the technical scheme described in foregoing embodiments, or carry out equivalent to which part technical characteristic；And these modifications or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a kind of relaying return link ascending transmission method, it is characterised in that include：Relaying
Node receives the physical down control letter for being carried on return link that base station sends in wireless sub-frame n
Downlink Control Information on road PDCCH, and k-th wireless sub-frame after wireless sub-frame n
N+k to base station send be carried on Physical Uplink Shared Channel PUSCH corresponding to the descending control
The passback uplink service of information processed, wherein,
For radio frames use uplink-downlink configuration 0, when n=0,1,5 or 6, k=8；
For radio frames use uplink-downlink configuration 1, during n=1 or 6, k=7, n=4 or when 9,
K=8；
For radio frames use uplink-downlink configuration 2, during n=1 or 6, k=6；
For radio frames use uplink-downlink configuration 3, when n=7,8 or 9, k=5；
For radio frames use uplink-downlink configuration 4, during n=7 or 8, k=5；
When uplink-downlink configuration 5, n=7 are used for radio frames, k=5；
For radio frames use uplink-downlink configuration 6, when n=0,5,6 or 9, k=8, during n=1,
K=11.
2. method according to claim 1, it is characterised in that also include：For wireless
Frame uses uplink-downlink configuration 0, if via node is in being carried on that wireless sub-frame n is received
The MSB of the UL index fields in the uplink authorization on PDCCH is 1, or in subframe 0
Or 5 receive be carried on physics hybrid automatic retransmission indicate channel PHICH on IPHICH=0,
Then via node can send corresponding passback uplink service, wherein I in subframe n+kPHICHFor
PHICH channel indexes.
3. method according to claim 1, it is characterised in that also include：For wireless
Frame uses uplink-downlink configuration 0, if via node is in being carried on that wireless sub-frame 0 or 5 is received
The LSB of the UL index fields in the uplink authorization on PDCCH is 1, or in subframe 0
Or 5 I being carried on PHICH for receivingPHICH=1, then via node is in subframe n+9
Send corresponding passback uplink service, wherein IPHICHFor PHICH channel indexes.
4. method according to claim 1, it is characterised in that also include：For wireless
Frame uses uplink-downlink configuration 0, if via node is in being carried on that wireless sub-frame 1 or 6 is received
The LSB of the UL index fields in the uplink authorization on PDCCH is 1, or in subframe 1
Or 6 I being carried on PHICH for receivingPHICH=1, then via node is in subframe n+9
Send uplink service, wherein IPHICHFor PHICH channel indexes.
5. method according to claim 1, it is characterised in that also include：For wireless
Frame uses uplink-downlink configuration 0, if via node is in being carried on that wireless sub-frame 0 or 5 is received
The MSB and LSB of the UL index fields in the uplink authorization on PDCCH is 1, then in
Corresponding passback uplink service is all sent after node in subframe n+k and n+9.
6. method according to claim 1, it is characterised in that also include：For wireless
Frame uses uplink-downlink configuration 0, if via node is in being carried on that wireless sub-frame 1 or 6 is received
The MSB and LSB of the UL index fields in the uplink authorization on PDCCH is 1, then in
Uplink service is all sent after node in subframe n+k and n+11.
7. method according to claim 1, it is characterised in that also include：
Via node sends to base station in wireless sub-frame m and is carried on Physical Uplink Shared Channel
The uplink service of PUCCH, then receive the physics being carried on PHICH in wireless sub-frame m+j
Hybrid automatic retransmission configured information；
For radio frames use uplink-downlink configuration 2, during n=2 or 7, k=4；
For radio frames use uplink-downlink configuration 3, when n=2,3 or 4, k=5；
For radio frames use uplink-downlink configuration 4, during n=2 or 3, k=5；
When uplink-downlink configuration 5, n=2 are used for radio frames, k=5.
8. method according to claim 1, it is characterised in that also include：
For radio frames are using uplink-downlink configuration 0, entered using 5 hybrid automatic retransmissions HARQ
Journey；
For radio frames use uplink-downlink configuration 1, using 8 HARQ processes；
For radio frames use uplink-downlink configuration 2, using 11 HARQ processes；
For radio frames use uplink-downlink configuration 3, using 10 HARQ processes；
For radio frames use uplink-downlink configuration 4, using 13 HARQ processes；
For radio frames use uplink-downlink configuration 5, using 16 HARQ processes；
For radio frames use uplink-downlink configuration 6, using 7 HARQ processes.
9. method according to claim 1, it is characterised in that also include：
Via node sends industry in the passback being carried on PUSCH at the first moment to base station
Business, what in the second reception, its terminal R-UE for covering sent are carried on connecing on PUSCH
Enter uplink service, first moment is different from second moment.
10. method according to claim 1, it is characterised in that also include：
Via node is connect while sending the passback uplink service being carried on PUSCH to base station
The access uplink service being carried on PUSCH that its terminal R-UE for covering sends is received, is being returned
Passing uplink service and accessing to leave unused between uplink service has a certain amount of Resource Block.
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| CN110167174A (en) * | 2018-02-14 | 2019-08-23 | 华为技术有限公司 | A kind of relay transmission method and device |
| CN110365457A (en) * | 2018-04-11 | 2019-10-22 | 成都华为技术有限公司 | A kind of transmission method and device of reference signal |
| CN110418412A (en) * | 2018-04-28 | 2019-11-05 | 华为技术有限公司 | A kind of wave beam management method, relaying transmitting-receiving node, terminal and base station |
| CN113615230A (en) * | 2019-02-01 | 2021-11-05 | 株式会社Ntt都科摩 | User terminal and wireless communication method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110167174A (en) * | 2018-02-14 | 2019-08-23 | 华为技术有限公司 | A kind of relay transmission method and device |
| CN110365457A (en) * | 2018-04-11 | 2019-10-22 | 成都华为技术有限公司 | A kind of transmission method and device of reference signal |
| CN110365457B (en) * | 2018-04-11 | 2021-01-15 | 成都华为技术有限公司 | Transmission method and device of reference signal |
| CN110418412A (en) * | 2018-04-28 | 2019-11-05 | 华为技术有限公司 | A kind of wave beam management method, relaying transmitting-receiving node, terminal and base station |
| CN110418412B (en) * | 2018-04-28 | 2022-01-14 | 华为技术有限公司 | Beam management method, relay transceiving node, terminal and base station |
| CN113615230A (en) * | 2019-02-01 | 2021-11-05 | 株式会社Ntt都科摩 | User terminal and wireless communication method |
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| Publication number | Publication date |
|---|---|
| CN106506129B (en) | 2019-09-06 |
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