CN101908954A - Method and device for solving uplink transmission conflict of relay node - Google Patents
Method and device for solving uplink transmission conflict of relay node Download PDFInfo
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- CN101908954A CN101908954A CN2009100865034A CN200910086503A CN101908954A CN 101908954 A CN101908954 A CN 101908954A CN 2009100865034 A CN2009100865034 A CN 2009100865034A CN 200910086503 A CN200910086503 A CN 200910086503A CN 101908954 A CN101908954 A CN 101908954A
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Abstract
The invention discloses a method and a device for solving uplink transmission conflict of a relay node (RN). In the scheme of the invention, one main processing mode comprises that: the RN determines a sub-frame thereof for uplink transmission, and does not send uplink authorization corresponding to the uplink transmission of UE at the sub-frame to the UE according to a current uplink HARQ time sequence; and the other main processing mode comprises that: when the uplink transmission will conflict, the RN only performs the uplink transmission thereof or only receives the uplink transmission of the UE. Therefore, the uplink transmission conflict of the RN is well solved, the influence on the uplink transmission because the RN cannot simultaneously perform receiving and transmitting on the same frequency range is taken into full consideration, and meanwhile, the condition that the RN simultaneously performs receiving and transmitting on the same frequency range is avoided by combining the current uplink HARQ time sequence.
Description
Technical field
The present invention relates to wireless communication technology, be meant a kind of solution via node (RN, Relay-Node) method of uplink transmission conflict and device especially.
Background technology
In order to satisfy the demand that growing big bandwidth high-speed mobile inserts, third generation partner program (3GPP, 3rd Generation Partnership Project) has been released the LTE-Advanced standard.LTE-Advanced is for Long Term Evolution (LTE, Long Term Evolution) evolution has kept the core of LTE, and adopt a series of technology that frequency domain, spatial domain are expanded on this basis, to reach purposes such as improving the availability of frequency spectrum, increase power system capacity.Wireless relay (Relay) technology is wherein technology that LTE-Advanced adopts, and is intended to enlarge the coverage of sub-district, reduces the area, dead angle in the communication, balanced load, shift the business of hot zones, save the transmitting power of user terminal (UE, User Equipment).Increase some new RN between original base station (Donor-eNB) and UE, as shown in Figure 1, the link between base station and the RN is called back haul link (backhaul link), and the link between via node and the UE is called access link (access link).The RN that these are newly-increased and original base station be all by wireless connections, and do not have wired connection between the transmission network.Downlink data at first arrives the base station, and then is sent to RN, and RN is resent to UE, otherwise upstream data then.Furthered antenna and terminal use's distance of this method can be improved the link of terminal quality, thereby improve the spectrum efficiency and the user data rate of system.
Consider propagation delay time, processing delay etc., there is the automatic repeat requests (HARQ of up mixing in the existing LTE system, Hybrid ARQ) sequential, promptly UE receive uplink authorization (UL Grant) subframe, carry out the subframe of uplink and receive between the subframe of HARQ feedback existing strict timing relationship.In order to guarantee that existing ascending HARQ sequential is followed in UE and the uplink between the uplink between the RN, RN and the base station in the LTE-A system equally to the compatibility of UE in the existing LTE system.
If UE receives uplink authorization at subframe n, then carry out corresponding uplink at subframe n+k.For Frequency Division Duplexing (FDD) (FDD, Frequency Division Duplex) pattern, the k value is 4; For time division duplex (TDD, Time Division Duplex) pattern, table 1 has provided under different uplink-downlink configuration situations, might receive the value of the pairing k of subframe of uplink authorization.For example, uplink-downlink configuration is 1 o'clock, if UE receives uplink authorization in subframe 1, then after the individual subframe of 6 (k=6), promptly carries out corresponding uplink in subframe 7.Especially, for the uplink-downlink configuration under the tdd mode 0, the value of k may value be 7 also except table 1 is described.
The uplink authorization under the table 1TDD pattern and the timing relationship of uplink
If UE carries out uplink at subframe n, then receive corresponding HARQ feedback at subframe n+1.For fdd mode, 1 value is 4; For tdd mode, table 2 has provided under different uplink-downlink configuration situations, might carry out the value of the subframe pairing 1 of uplink.For example, uplink-downlink configuration is 1 o'clock, if UE carries out uplink in subframe 2, then after the individual subframe of 4 (1=4), promptly receives corresponding HARQ feedback in subframe 6.
The uplink under the table 2TDD pattern and the timing relationship of HARQ feedback
For relaying in the what is called band (in-band relay), promptly the Radio Link between the Radio Link between base station and the RN, RN and the UE is operated on the same frequency band.In view of Signal Separation and isolation between antennas can't guarantee to avoid the transmitter of RN and the interference between the receiver, therefore, RN can not can not launch data to UE to the base station data in the data that receive the UE emission in the data that receive base station.
But at some special subframe, RN not only can receive the information of base station transmission but also can send information to UE.Among Fig. 2, subframe 1 is common subframe, and this subframe is made up of control section and data division, and RN transmits control informations such as descending assignment, uplink authorization, HARQ relevant information at control section to UE, at data division to the UE transmitting downlink data; Subframe 2 is a special subframe, be specially and be used for downlink transfer is carried out in pseudo-Multicast Broadcast Single Frequency Network (MBSFN from the base station to RN, Multicast Broadcast Single Frequency Network) subframe, this subframe is made up of control section and data division equally, RN sends control informations such as uplink authorization, HARQ relevant information at the control section of this subframe to UE, at the data division RN of this subframe not to the UE transmitting downlink data, but receive the downlink transfer of base station to RN, this downlink transfer can be control information, also can be downlink data.Therefore, RN both can receive the information that the base station sends in subframe 2, can send information to UE again.
If RN had both sent uplink authorization to UE in special subframe, received the uplink authorization of base station again to its transmission, so according to existing ascending HARQ sequential, the upstream data of UE and the upstream data of RN will transmit on follow-up same subframe, this just makes RN should send upstream data to the base station on same subframe, receive the upstream data that UE sends again, cause the uplink transmission conflict of the two.Among Fig. 3, subframe 3 is a special subframe, and the base station is distributed uplink authorization in subframe 3 for RN, with the uplink of scheduling RN in subframe 7; RN also distributes uplink authorization in subframe 3 for UE, with the uplink of scheduling UE in subframe 7, this will cause RN to face in subframe 7 should receive the upstream data that UE sends, and sends the upstream data of this RN again to the base station, the conflict situations that same frequency range is received and dispatched simultaneously occurs.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method and device that solves the via node uplink transmission conflict, avoids RN to clash to the uplink of RN to the uplink and the UE of base station.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that solves the via node uplink transmission conflict, this method comprises: via node RN determines self to carry out the subframe of uplink, according to the automatic repeat requests HARQ sequential of existing up mixing, do not make UE carry out the pairing uplink authorization of uplink in described subframe to the user equipment (UE) transmission.
Describedly determine self to carry out the subframe of uplink, be specially: determine the dedicated uplink subframe of base station configuration, described dedicated uplink subframe is exclusively used in the uplink of RN; The existing ascending HARQ sequential of described basis does not send to UE and makes UE carry out the pairing uplink authorization of uplink in described subframe, be specially: the subframe that RN determines can be used in uplink authorization according to the dedicated uplink subframe and the existing ascending HARQ sequential of configuration, RN does not send uplink authorization to UE on corresponding subframe.
Described dedicated uplink subframe realizes static configuration or dynamic-configuration to RN by the base station by system broadcast message or dedicated signaling; Described system broadcast message or dedicated signaling are: increase the field that characterizes the dedicated uplink subframe in existing system broadcast or dedicated signaling; Or, the system broadcast message or the dedicated signaling that define for the dedicated uplink subframe that is exclusively used in transmission configuration.
Described dedicated uplink subframe identifies by bit map.
Describedly determine self to carry out the subframe of uplink, be specially: according to receiving that the base station distributes to the subframe of the uplink authorization of RN, subframe offset parameter and existing ascending HARQ sequential and determine that RN carries out the subframe of uplink; The existing automatic repeat requests HARQ sequential of up mixing of described basis does not send to user equipment (UE) and makes UE carry out the pairing uplink authorization of uplink in described subframe, be specially: carry out the subframe of uplink and the subframe that existing ascending HARQ sequential determines can be used in uplink authorization according to RN, RN does not send uplink authorization to UE on corresponding subframe.
Described subframe offset parameter is p, describedly determine self to carry out the subframe of uplink, comprise: under the FDD pattern,, on this basis of sub-frames, postpone p subframe according to receiving that the base station distributes to the subframe and the existing ascending HARQ sequential of the uplink authorization of RN and determine subframe; Under the TDD pattern,, on the basis of this sub-frame of uplink, postpone p sub-frame of uplink according to receiving that the base station distributes to the subframe and the existing ascending HARQ sequential of the uplink authorization of RN and determine sub-frame of uplink.
Described definite RN carries out further comprising after the subframe of uplink: RN carries out uplink in described subframe, and receives corresponding HARQ feedback at the special subframe of configuration.
The static configuration of described subframe offset parameter or dynamic-configuration are finished by base station or RN self; When the configuration of described subframe offset parameter was finished by the base station, described subframe offset parameter was realized configuration to RN by the base station by system broadcast message or dedicated signaling; Described system broadcast message or dedicated signaling are: increase the field that characterizes the subframe offset parameter in existing system broadcast or dedicated signaling; Or, the system broadcast message or the dedicated signaling that define for the subframe offset parameter that is exclusively used in transmission configuration.
A kind of method that solves the via node uplink transmission conflict, when uplink will clash, this method comprised: RN only carries out the uplink of this RN and does not receive the uplink of UE, and perhaps RN receives only the uplink of UE and do not carry out the uplink of this RN.
After the uplink that described is carried out RN, further comprise: RN sends the HARQ feedback according to existing ascending HARQ sequential to UE, and UE carries out uplink according to described HARQ feedback; After the described uplink that receives only UE, further comprise: RN receives HARQ feedback from the base station according to existing ascending HARQ sequential, carries out the uplink of this RN according to described HARQ feedback.
A kind of device that solves the via node uplink transmission conflict, this device comprises: opportunity determining unit and authorization control unit, wherein, described opportunity, determining unit was used for the subframe of determining that RN carries out uplink; Described authorization control unit is used for according to existing ascending HARQ sequential, does not send to UE to make UE carry out the pairing uplink authorization of uplink in described subframe.
Described opportunity, determining unit specifically was used for determining the dedicated uplink subframe of base station configuration, and this dedicated uplink subframe is exclusively used in RN and carries out uplink; Described authorization control unit specifically is used for not sending uplink authorization to UE on corresponding subframe according to the dedicated uplink subframe of configuration and the existing ascending HARQ sequential subframe of determining can be used in uplink authorization.
Determining unit comprised the skew acquiring unit, authorized receiving element and subframe determining unit opportunity, and wherein, described skew acquiring unit is used for determining the subframe offset parameter; Described mandate receiving element is used to receive the uplink authorization that base station assigns is given RN, and provides the subframe that receives described uplink authorization to the subframe determining unit; Described subframe determining unit is used for according to receiving that the base station distributes to the subframe of the uplink authorization of RN, described subframe offset parameter and existing ascending HARQ sequential and determine that RN carries out the subframe of uplink; Described authorization control unit specifically is used for carrying out the subframe of uplink and the subframe that existing ascending HARQ sequential determines can be used in uplink authorization according to RN, and RN does not send uplink authorization to UE on corresponding subframe.
This device further comprises: the HARQ receiving element is used for feeding back at the HARQ that the special subframe that disposes receives corresponding to uplink.
A kind of device that solves the via node uplink transmission conflict, at least comprise transmission processing unit among the RN, when being used for uplink and will clashing, only carry out the uplink of this RN and do not receive the uplink of UE, perhaps, receive only the uplink of UE and do not carry out the uplink of this RN.
The scheme that proposes according to the present invention can solve the problem of RN uplink transmission conflict well.Take into full account RN and can't receive and send the influence that uplink is brought in similar frequency bands simultaneously, simultaneously at existing ascending HARQ sequential, RN is according to the opportunity of self carrying out uplink the uplink authorization of distributing to UE being controlled, perhaps, when uplink will clash, RN only carries out the uplink of self or receives only the uplink of UE, thereby avoids taking place the situation that RN receives and sends in similar frequency bands simultaneously.
Description of drawings
Fig. 1 is for adopting the schematic network structure of relaying technique;
Fig. 2 is the structural representation that is used for the MBSFN subframe of RN;
Fig. 3 receives simultaneously for RN and transmission causes the uplink transmission conflict schematic diagram;
Fig. 4 is instantiation one schematic diagram of the present invention;
Fig. 5 is instantiation two schematic diagrames of the present invention;
Fig. 6 is instantiation three schematic diagrames of the present invention;
Fig. 7 is instantiation four schematic diagrames of the present invention;
Fig. 8 is instantiation five schematic diagrames of the present invention;
Fig. 9 is instantiation six schematic diagrames of the present invention;
Figure 10 is instantiation seven schematic diagrames of the present invention;
Figure 11 is instantiation eight schematic diagrames of the present invention;
Figure 12 is for solving the structural representation of the device of RN uplink transmission conflict among the present invention;
Figure 13 among the present invention opportunity determining unit structural representation.
Embodiment
Among the present invention, a kind of main processing mode is: RN determines self to carry out the subframe of uplink, according to existing ascending HARQ sequential, do not make UE carry out the pairing uplink authorization of uplink, specifically realize by implementation one described below and implementation three in described subframe to the UE transmission; Another kind of main processing mode is: when uplink will clash, RN only carries out the uplink of self or receives only the uplink of UE, specifically realize by implementation two described below, to avoid uplink transmission conflict, promptly avoid RN to clash to the uplink of CN to the uplink and the UE of base station.
In below describing, special subframe is meant that RN can receive base station assigns and give the uplink authorization of this RN, can send the subframe of uplink authorization to UE again.Particularly, special subframe can carry out the pseudo-MBSFN subframe of downlink transfer for being used for the base station to RN.
Implementation one
Base station configuration is exclusively used in the dedicated uplink subframe that RN carries out uplink; RN controls the uplink authorization of distributing to UE according to the dedicated uplink subframe of configuration, that is to say, RN does not dispatch the uplink of UE on the dedicated uplink subframe of configuration, be the existing ascending HARQ sequential of RN basis, do not make UE carry out the pairing uplink authorization of uplink in the dedicated uplink subframe to the UE transmission.Particularly, the subframe that RN determines can be used in uplink authorization according to the dedicated uplink subframe and the existing ascending HARQ sequential of configuration, RN does not send uplink authorization to UE on corresponding subframe.
The dedicated uplink subframe can be notified to RN by system broadcast message or dedicated signaling or other modes by the base station, realizes static configuration or dynamic-configuration to RN.
Described system broadcast message can be to increase field in the existing system broadcast, characterizes the dedicated uplink subframe of configuration by this field; Can be the system broadcast message of redetermination also, be exclusively used in the dedicated uplink subframe of transmission configuration.
Described dedicated signaling can be to increase field in existing dedicated signaling, characterizes the dedicated uplink subframe of configuration by this field; Can be the dedicated signaling of redetermination also, be exclusively used in the dedicated uplink subframe of transmission configuration.Dedicated signaling specifically can refer to the dedicated signaling of UE or the dedicated signaling of RN.
The dedicated uplink subframe can identify by bit map (BITMAP), promptly identifies corresponding subframe by 0,1 and whether is configured to the dedicated uplink subframe; Also can identify by other modes.In bit map, the bit value is 1 can represent that its corresponding subframe is configured to the dedicated uplink subframe, and accordingly, the bit value is that 0 its corresponding subframe of expression is not configured to the dedicated uplink subframe.Vice versa, and promptly the bit value is 0 can represent that its corresponding subframe is configured to the dedicated uplink subframe, and accordingly, the bit value is that 1 its corresponding subframe of expression is not configured to the dedicated uplink subframe.
Instantiation one
This example is based on fdd mode, and as shown in Figure 4, each grid is represented the width of the Transmission Time Interval (TTI, Transmission Time Interval) on the sequential among the figure, is specially 1ms.The radio frames of each 10ms comprises the subframe of ten 1ms, and label is respectively 0～9.
Under the fdd mode, except being used to broadcast and subframe 0, subframe 4, subframe 5 and the subframe 9 of paging can not be configured to special subframe, all the other subframes all might be configured to special subframe, as shown in Figure 4 all possible MBSFN subframe numbers of fdd mode.RN only can receive that the base station distributes to the uplink authorization of this RN at special subframe, can obtain each corresponding subframe that RN may carry out uplink according to existing ascending HARQ sequential, as shown in Figure 4.
In this example, the pre-configured subframe 5 in base station, subframe 2 are the dedicated uplink subframe, can identify by bit map, specifically as shown in Figure 4.Like this, no matter whether RN receives that in subframe 1, the subframe 8 of correspondence the base station distributes to the uplink authorization of this RN, can not send uplink authorization to any UE in subframe 1, subframe 8, realized that RN does not dispatch the uplink of UE on the dedicated uplink subframe-subframe 5 that disposes, subframe 2, thereby guaranteed uplink transmission conflict can not take place in subframe 5, subframe 2.Whether whether RN carries out uplink in subframe 5, the subframe 2 of configuration, depend in subframe 1, the subframe 8 of correspondence to receive that the base station distributes to the uplink authorization of RN.
Instantiation two
This example is based on tdd mode, and uplink-downlink configuration is 2, and as shown in Figure 5, each grid is represented a TTI width on the sequential among the figure, is specially 1ms.The radio frames of each 10ms comprises the subframe of ten 1ms, and label is respectively 0～9.Wherein, D represents descending sub frame, and U represents sub-frame of uplink, and S represents conversion (Switch) subframe.
Under the tdd mode, except being used to broadcast and subframe 0, subframe 1, subframe 5 and the subframe 6 of paging can not be configured to special subframe, all the other descending sub frames all might be configured to special subframe, as shown in Figure 5 the possible MBSFN subframe numbers of tdd mode.RN only can receive that the base station distributes to the uplink authorization of this RN at special subframe, according to existing ascending HARQ sequential, promptly table 1 can obtain each corresponding subframe that RN may carry out uplink, as shown in Figure 5.
In this example, the base station can identify by bit map, specifically as shown in Figure 5 by being the dedicated uplink subframe to RN transmitting system broadcast configuration subframe 7.Like this, no matter whether RN receives that in the subframe 3 of correspondence the base station distributes to the uplink authorization of this RN, can not send uplink authorization to any UE in subframe 3, realized that RN does not dispatch the uplink of UE on the dedicated uplink subframe-subframe 7 of configuration, thereby guaranteed uplink transmission conflict can not take place in subframe 7.Whether whether RN carries out uplink in the subframe 7 of configuration, depend in the subframe 3 of correspondence to receive that the base station distributes to the uplink authorization of RN.
Implementation two
According to uplink authorization, UE and RN will carry out uplink in same subframe, and promptly when the uplink of base station will clash, RN can carry out alignment processing according to configuration or uplink priority to UE to the uplink of RN and RN.Particularly, if the uplink that is configured to only receive when uplink clashes UE of RN, when then uplink will clash, RN received only the uplink of UE and does not carry out the uplink of this RN according to configuration; Similarly, if RN be configured to only carry out the uplink of this RN when uplink clashes, when then uplink will clash, RN only carried out the uplink of this RN and does not receive the uplink of UE according to configuration.RN also can be according to uplink priority when uplink will clash, and determines UE when the priority of the uplink of RN is higher than RN to the priority of the uplink of base station, then receives only the uplink of UE and do not carry out the uplink of this RN; Determine RN when the priority of the uplink of base station is higher than UE to the priority of the uplink of RN, then only carry out the uplink of this RN and do not receive the uplink of UE.Uplink priority can be provided by the base station, also can be determined voluntarily by RN.
If RN receives only the uplink of UE and do not carry out the uplink of this RN, then according to existing ascending HARQ sequential, RN will receive that the HARQ from the base station feeds back in corresponding subframe, and RN can carry out the uplink of this RN according to the HARQ feedback of receiving.Do not receive the uplink of UE if RN only carries out the uplink of this RN, then according to existing ascending HARQ sequential, RN will send the HARQ feedback to UE in corresponding subframe, to reschedule the uplink of UE; UE will carry out uplink according to the HARQ feedback of receiving.
Instantiation three
This example is based on fdd mode, and as shown in Figure 6, each grid is represented the width of a TTI on the sequential among the figure, is specially 1ms.The radio frames of each 10ms comprises the subframe of ten 1ms, and label is respectively 0～9.
In this example, being configured to of RN closed reception when uplink clashes, promptly only carry out the uplink of this RN.Subframe 3 is a special subframe, and RN sends uplink authorization in subframe 3 to UE, and receives the uplink authorization that base station assigns is given this RN.According to existing ascending HARQ sequential, in the subframe 7 corresponding with the subframe 3 of transmission uplink authorization, RN only carries out uplink to the base station according to configuration, does not receive the uplink of UE.
Because RN does not receive the uplink of UE in subframe 7, RN just can not receive the uplink that UE carries out in subframe 7, therefore, in order to guarantee the integrality of transfer of data, RN is according to existing ascending HARQ sequential, to the HARQ feedback that UE sends non-affirmation, wish that UE continues up non-self-adapting and retransmits in subframe 1; RN also can the directly self adaptation re-transmission of scheduling UE on subframe 1.
Implementation three
For the UE of compatible existing LTE system in the LTE-A system, RN need follow existing ascending HARQ sequential to the opportunity of UE transmission uplink authorization and the opportunity that UE carries out uplink.Therefore, the base station can be set be different from existing ascending HARQ sequential to the opportunity of RN transmission uplink authorization and the opportunity that RN carries out uplink, i.e. the subframe offset parameter of RN configuration is postponed the opportunity of carrying out uplink with respect to existing ascending HARQ sequential; And clash for fear of uplink, RN is according to the opportunity of self carrying out uplink the uplink authorization of distributing to UE being controlled, be the existing ascending HARQ sequential of RN basis, do not make UE carry out the pairing uplink authorization of uplink in the subframe that RN carries out uplink to the UE transmission.
Subframe offset parameter p can static configuration, also can be dynamic-configuration.The configuration of subframe offset parameter p can be finished by the base station, also can be finished voluntarily by RN.When the configuration of subframe offset parameter p is finished in the base station, can subframe offset parameter p be notified to RN, to realize static configuration or dynamic-configuration to RN by system broadcast message or dedicated signaling or other modes.
Described system broadcast message can be to increase field in the existing system broadcast, carries subframe offset parameter p by this field; Can be the system broadcast message of redetermination also, be exclusively used in the subframe offset parameter p of transmission configuration.
Described dedicated signaling can be to increase field in existing dedicated signaling, carries subframe offset parameter p by this field; Can be the dedicated signaling of redetermination also, be exclusively used in the subframe offset parameter p of transmission configuration.Dedicated signaling specifically can refer to the dedicated signaling of UE or the dedicated signaling of RN.
The subframe offset parameter p of different RN can be identical, also can be different.
The specific implementation that RN is postponed the opportunity of carrying out uplink according to the subframe offset parameter that is provided with respect to existing ascending HARQ sequential is described below.
If RN receives that at subframe n the base station distributes to the uplink authorization of this RN, then RN carries out the uplink of this RN with p the subframe (for tdd mode, should be p sub-frame of uplink) behind subframe n+k.Wherein, the opportunity of carrying out uplink that the k value is determined for the existing ascending HARQ sequential of basis, for fdd mode, k=4; For tdd mode, the value of k is as shown in table 1, during particular arrangement k directly value be 7.P is the subframe offset parameter, and value is the integer greater than 0; The value of p is relevant with the processing delay of RN.Under the fdd mode, p is the number of sub-frames of skew; Under the tdd mode, p represents the sub-frame of uplink number that is offset.
Under the tdd mode, when the value of p was 1, the uplink authorization of RN was as shown in table 3 with the timing relationship between the corresponding uplink.Laterally corresponding in the table 3 is uplink-downlink configuration tdd mode under, the descending sub frame of vertically corresponding is RN reception uplink authorization number.Table 3 obtains based on table 1 when p=1, clashes to avoid uplink.P=1 represents to be offset a sub-frame of uplink.
The uplink authorization under the table 3TDD pattern and the timing relationship (p=1) of uplink
If RN receives that at subframe n the base station distributes to the uplink authorization of this RN, the corresponding subframe of then carrying out uplink is subframe n+s, and the value of s is as shown in table 3; And, RN is according to existing ascending HARQ sequential, not sending to UE makes UE carry out the pairing uplink authorization of uplink at subframe n+s, be that the RN basis is carried out the subframe n+s of uplink and the subframe that existing ascending HARQ sequential determines can be used in uplink authorization, RN does not send uplink authorization to UE on corresponding subframe.
Under the tdd mode, when the value of p was 2, the uplink authorization of RN was as shown in table 4 with the timing relationship between the corresponding uplink.
The uplink authorization under the table 4TDD pattern and the timing relationship (p=2) of uplink
If RN receives that at subframe n the base station distributes to the uplink authorization of this RN, the corresponding subframe of then carrying out uplink is subframe n+s, and the value of s is as shown in table 4; And, RN is according to existing ascending HARQ sequential, not sending to UE makes UE carry out the pairing uplink authorization of uplink at subframe n+s, be that the RN basis is carried out the subframe n+s of uplink and the subframe that existing ascending HARQ sequential determines can be used in uplink authorization, RN does not send uplink authorization to UE on corresponding subframe.
Instantiation four
This example is configured to special subframe based on fdd mode with subframe 1, subframe offset parameter p=1.As shown in Figure 7, RN sends uplink authorization in subframe 1 to UE, and receives that in subframe 1 base station distributes to the uplink authorization of this RN.Follow existing ascending HARQ sequential between RN and the UE, can obtain RN after 4 TTI, be that subframe 5 receives the upstream data that UE send, RN after 4 TTI again, be that subframe 9 sends corresponding HARQ feedback to UE.According to scheme provided by the invention, RN is according to subframe offset parameter p=1, postpone the opportunity of carrying out uplink with respect to existing ascending HARQ sequential, be that RN postpones a subframe on the basis of subframe 5, carry out uplink in subframe 6, RN can receive corresponding HARQ feedback on the special subframe of the up feedback of reception that is disposed then.This shows,, can avoid the generation of uplink transmission conflict effectively according to implementation three.
If RN receives that in subframe 1 base station distributes to the uplink authorization of this RN, according to subframe offset parameter p=1 and existing ascending HARQ sequential as can be known, RN will carry out uplink in subframe 6, so, clash for fear of uplink, then UE can not carry out uplink in subframe 6, therefore, according to existing ascending HARQ sequential as can be known, RN does not send uplink authorization in subframe 2 to UE, and promptly RN does not send to UE and makes UE carry out the pairing uplink authorization of uplink in subframe 6.
Instantiation five
This example is based on tdd mode, and uplink-downlink configuration is 1, and subframe 4 is configured to special subframe, subframe offset parameter p=1.As shown in Figure 8, RN sends uplink authorization in subframe 4 to UE, and receives that in subframe 4 base station distributes to the uplink authorization of this RN.Follow existing ascending HARQ sequential between RN and the UE, according to table 1 as can be known, RN receives the upstream data that UE sends in subframe 8, and according to table 2 as can be known, RN sends corresponding HARQ feedback in subframe 4 to UE then.According to scheme provided by the invention, RN is according to subframe offset parameter p=1, postpone the opportunity of carrying out uplink with respect to existing ascending HARQ sequential, RN postpones a sub-frame of uplink on the basis of subframe 4, subframe 2 at next frame is carried out uplink, be separated by between the subframe 2 of subframe 4 and next frame 8 subframes, the i.e. timing relationship of uplink authorization shown in the table 3 and uplink; RN can receive corresponding HARQ feedback on the special subframe of the up feedback of reception that is disposed then.This shows,, avoided the generation of uplink transmission conflict effectively according to implementation three.
If RN receives that in subframe 4 base station distributes to the uplink authorization of this RN, according to subframe offset parameter and existing ascending HARQ sequential as can be known, RN will carry out uplink in the subframe 2 of next frame, therefore, according to existing ascending HARQ sequential as can be known, RN does not send uplink authorization in subframe 6 to UE, and promptly RN does not send to UE and makes UE carry out the pairing uplink authorization of uplink in the subframe 2 of next frame.
Instantiation six
This example is based on tdd mode, and uplink-downlink configuration is 1, and subframe 4 is configured to special subframe, subframe offset parameter p=2.As shown in Figure 9, RN sends uplink authorization in subframe 4 to UE, and receives that in subframe 4 base station distributes to the uplink authorization of this RN.Follow existing ascending HARQ sequential between RN and the UE, according to table 1 as can be known, RN receives the upstream data that UE sends in subframe 8, and according to table 2 as can be known, RN sends corresponding HARQ feedback in subframe 4 to UE then.According to scheme provided by the invention, RN is according to subframe offset parameter p=2, postpone the opportunity of carrying out uplink with respect to existing ascending HARQ sequential, RN postpones two sub-frame of uplink on the basis of subframe 4, subframe 3 at next frame is carried out uplink, be separated by between the subframe 3 of subframe 4 and next frame 9 subframes, the i.e. timing relationship of uplink authorization shown in the table 4 and uplink; RN can receive corresponding HARQ feedback on the special subframe of the up feedback of reception that is disposed then.This shows,, avoided the generation of uplink transmission conflict effectively according to implementation three.
If RN receives that in subframe 4 base station distributes to the uplink authorization of this RN, according to subframe offset parameter and existing ascending HARQ sequential as can be known, RN will carry out uplink in the subframe 3 of next frame, therefore, according to existing ascending HARQ sequential as can be known, RN does not send uplink authorization in subframe 9 to UE, and promptly RN does not send to UE and makes UE carry out the pairing uplink authorization of uplink in the subframe 3 of next frame.
Instantiation seven
This example is based on tdd mode, and uplink-downlink configuration is 1, and subframe 4 and subframe 9 are configured to special subframe, subframe offset parameter p=1.As shown in figure 10, RN sends uplink authorization in subframe 4 to UE, and receives that in subframe 4 base station distributes to the uplink authorization 1 of this RN.Follow existing ascending HARQ sequential between RN and the UE, according to table 1 as can be known, RN receives the upstream data that UE sends in subframe 8, and according to table 2 as can be known, RN sends corresponding HARQ feedback in subframe 4 to UE then.According to scheme provided by the invention, RN is according to subframe offset parameter p=1, postpone the opportunity of carrying out uplink with respect to existing ascending HARQ sequential, RN postpones a sub-frame of uplink on the basis of subframe 4, subframe 2 at next frame is carried out uplink 1, be separated by between the subframe 2 of subframe 4 and next frame 8 subframes, the i.e. timing relationship of uplink authorization shown in the table 3 and uplink; RN can receive corresponding HARQ feedback 1 on the special subframe of the up feedback of reception that is disposed, subframe 9 then.
In addition, RN receives that in subframe 9 base station distributes to the uplink authorization 2 of this RN, according to subframe offset parameter p=1 and existing ascending HARQ sequential as can be known, RN will carry out uplink 2 in the subframe 7 of next frame, therefore, according to existing ascending HARQ sequential as can be known, RN does not send uplink authorization in the subframe 1 of next frame to UE, and promptly RN does not send to UE and makes UE carry out the pairing uplink authorization of uplink in the subframe 7 of next frame.Follow-up RN can receive corresponding HARQ feedback 2 on the special subframe of the up feedback of reception that is disposed, subframe 4.
Instantiation eight
This example is configured to special subframe based on fdd mode with subframe 1 and subframe 6, subframe offset parameter p=1.As shown in figure 11, RN receives that in subframe 4 base station distributes to the uplink authorization 1 of this RN, according to scheme provided by the invention, RN is according to subframe offset parameter p=1, postpone the opportunity of carrying out uplink with respect to existing ascending HARQ sequential, be that RN postpones a subframe on the basis of subframe 5, carry out uplink 1 in subframe 6.Clash for fear of uplink, UE can not carry out uplink in subframe 6, therefore, and according to existing ascending HARQ sequential as can be known, RN does not send uplink authorization in subframe 2 to UE, and promptly RN does not send to UE and makes UE carry out the pairing uplink authorization of uplink in subframe 6.
RN sends uplink authorization in subframe 4 to UE, follows existing ascending HARQ sequential between RN and the UE, can obtain RN after 4 TTI, be that subframe 8 receives the upstream data that UE send.
RN receives that in subframe 6 base station distributes to the uplink authorization 2 of this RN, according to subframe offset parameter p=1 and existing ascending HARQ sequential as can be known, RN will carry out uplink 2 in the subframe 1 of next frame, so, clash for fear of uplink, then UE can not carry out uplink in the subframe 1 of next frame, therefore, according to existing ascending HARQ sequential as can be known, RN does not send uplink authorization in subframe 7 to UE, and promptly RN does not send to UE and makes UE carry out the pairing uplink authorization of uplink in subframe 7.
Figure 12 is for solving the structural representation of the device of RN uplink transmission conflict among the present invention, implementation one and implementation three corresponding to the front, as shown in figure 12, this device comprises: opportunity determining unit and authorization control unit, wherein, opportunity, determining unit was used for determining that RN carries out the subframe of uplink, and offered the authorization control unit; The authorization control unit is used for according to existing ascending HARQ sequential, does not send to UE to make UE carry out the pairing uplink authorization of uplink in described subframe.
Corresponding to the implementation one of front, opportunity, determining unit was used for determining the dedicated uplink subframe of base station configuration, and offered the authorization control unit, and this dedicated uplink subframe is exclusively used in RN and carries out uplink; The authorization control unit is used for not sending uplink authorization to UE on corresponding subframe according to the dedicated uplink subframe of configuration and the existing ascending HARQ sequential subframe of determining can be used in uplink authorization.This device further comprises: the uplink unit, with opportunity determining unit link to each other, be used for carrying out uplink in the dedicated uplink subframe according to the uplink authorization received.
Corresponding to the implementation three of front, determining unit comprised the skew acquiring unit, authorized receiving element and subframe determining unit opportunity, and as shown in figure 13, wherein, the skew acquiring unit is used for determining the subframe offset parameter, and offers the subframe determining unit; Authorize receiving element to be used to receive the uplink authorization that base station assigns is given RN, and provide the subframe that receives described uplink authorization to the subframe determining unit; The subframe determining unit is used for according to receiving that the base station distributes to the subframe of the uplink authorization of RN, subframe offset parameter and existing ascending HARQ sequential and determine that RN carries out the subframe of uplink, and offers the authorization control unit.The authorization control unit is used for carrying out the subframe of uplink and the subframe that existing ascending HARQ sequential determines can be used in uplink authorization according to RN, and RN does not send uplink authorization to UE on corresponding subframe.This device further comprises: the uplink unit, link to each other with the subframe determining unit, and the subframe that is used for carrying out at RN uplink is carried out uplink.This device can further include: the HARQ receiving element is used for feeding back at the HARQ that the special subframe that disposes receives corresponding to uplink.
Implementation two corresponding to the front, at least comprise transmission processing unit among the RN, when being used for uplink and will clashing, only carry out the uplink of this RN and do not receive the uplink of UE or receive only the uplink of UE and do not carry out the uplink of this RN according to configuration or uplink priority.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (15)
1. a method that solves the via node uplink transmission conflict is characterized in that, this method comprises:
Via node RN determines self to carry out the subframe of uplink, according to the automatic repeat requests HARQ sequential of existing up mixing, does not make UE carry out the pairing uplink authorization of uplink in described subframe to the user equipment (UE) transmission.
2. method according to claim 1 is characterized in that,
Describedly determine self to carry out the subframe of uplink, be specially: determine the dedicated uplink subframe of base station configuration, described dedicated uplink subframe is exclusively used in the uplink of RN;
The existing ascending HARQ sequential of described basis does not send to UE and makes UE carry out the pairing uplink authorization of uplink in described subframe, be specially: the subframe that RN determines can be used in uplink authorization according to the dedicated uplink subframe and the existing ascending HARQ sequential of configuration, RN does not send uplink authorization to UE on corresponding subframe.
3. method according to claim 2 is characterized in that,
Described dedicated uplink subframe realizes static configuration or dynamic-configuration to RN by the base station by system broadcast message or dedicated signaling;
Described system broadcast message or dedicated signaling are: increase the field that characterizes the dedicated uplink subframe in existing system broadcast or dedicated signaling; Or, the system broadcast message or the dedicated signaling that define for the dedicated uplink subframe that is exclusively used in transmission configuration.
4. according to claim 2 or 3 described methods, it is characterized in that described dedicated uplink subframe identifies by bit map.
5. method according to claim 1 is characterized in that,
Describedly determine self to carry out the subframe of uplink, be specially: according to receiving that the base station distributes to the subframe of the uplink authorization of RN, subframe offset parameter and existing ascending HARQ sequential and determine that RN carries out the subframe of uplink;
The existing automatic repeat requests HARQ sequential of up mixing of described basis does not send to user equipment (UE) and makes UE carry out the pairing uplink authorization of uplink in described subframe, be specially: carry out the subframe of uplink and the subframe that existing ascending HARQ sequential determines can be used in uplink authorization according to RN, RN does not send uplink authorization to UE on corresponding subframe.
6. method according to claim 5 is characterized in that, described subframe offset parameter is p, describedly determines self to carry out the subframe of uplink, comprising:
Under the FDD pattern,, on this basis of sub-frames, postpone p subframe according to receiving that the base station distributes to the subframe and the existing ascending HARQ sequential of the uplink authorization of RN and determine subframe;
Under the TDD pattern,, on the basis of this sub-frame of uplink, postpone p sub-frame of uplink according to receiving that the base station distributes to the subframe and the existing ascending HARQ sequential of the uplink authorization of RN and determine sub-frame of uplink.
7. according to claim 5 or 6 described methods, it is characterized in that described definite RN carries out further comprising after the subframe of uplink: RN carries out uplink in described subframe, and receive corresponding HARQ feedback at the special subframe of configuration.
8. according to claim 5 or 6 described methods, it is characterized in that,
The static configuration of described subframe offset parameter or dynamic-configuration are finished by base station or RN self;
When the configuration of described subframe offset parameter was finished by the base station, described subframe offset parameter was realized configuration to RN by the base station by system broadcast message or dedicated signaling;
Described system broadcast message or dedicated signaling are: increase the field that characterizes the subframe offset parameter in existing system broadcast or dedicated signaling; Or, the system broadcast message or the dedicated signaling that define for the subframe offset parameter that is exclusively used in transmission configuration.
9. method that solves the via node uplink transmission conflict, it is characterized in that, when uplink will clash, this method comprised: RN only carries out the uplink of this RN and does not receive the uplink of UE, and perhaps RN receives only the uplink of UE and do not carry out the uplink of this RN.
10. method according to claim 9 is characterized in that,
After the uplink that described is carried out RN, further comprise: RN sends the HARQ feedback according to existing ascending HARQ sequential to UE, and UE carries out uplink according to described HARQ feedback;
After the described uplink that receives only UE, further comprise: RN receives HARQ feedback from the base station according to existing ascending HARQ sequential, carries out the uplink of this RN according to described HARQ feedback.
11. a device that solves the via node uplink transmission conflict is characterized in that, this device comprises: opportunity determining unit and authorization control unit, wherein,
Described opportunity, determining unit was used for the subframe of determining that RN carries out uplink;
Described authorization control unit is used for according to existing ascending HARQ sequential, does not send to UE to make UE carry out the pairing uplink authorization of uplink in described subframe.
12. device according to claim 11 is characterized in that,
Described opportunity, determining unit specifically was used for determining the dedicated uplink subframe of base station configuration, and this dedicated uplink subframe is exclusively used in RN and carries out uplink;
Described authorization control unit specifically is used for not sending uplink authorization to UE on corresponding subframe according to the dedicated uplink subframe of configuration and the existing ascending HARQ sequential subframe of determining can be used in uplink authorization.
13. device according to claim 11 is characterized in that, determining unit comprised the skew acquiring unit, authorized receiving element and subframe determining unit opportunity, wherein,
Described skew acquiring unit is used for determining the subframe offset parameter;
Described mandate receiving element is used to receive the uplink authorization that base station assigns is given RN, and provides the subframe that receives described uplink authorization to the subframe determining unit;
Described subframe determining unit is used for according to receiving that the base station distributes to the subframe of the uplink authorization of RN, described subframe offset parameter and existing ascending HARQ sequential and determine that RN carries out the subframe of uplink;
Described authorization control unit specifically is used for carrying out the subframe of uplink and the subframe that existing ascending HARQ sequential determines can be used in uplink authorization according to RN, and RN does not send uplink authorization to UE on corresponding subframe.
14. device according to claim 13 is characterized in that, this device further comprises: the HARQ receiving element is used for feeding back at the HARQ that the special subframe that disposes receives corresponding to uplink.
15. device that solves the via node uplink transmission conflict, it is characterized in that, at least comprise transmission processing unit among the RN, when being used for uplink and will clashing, only carry out the uplink of this RN and do not receive the uplink of UE, perhaps, receive only the uplink of UE and do not carry out the uplink of this RN.
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| CN200910086503.4A CN101908954B (en) | 2009-06-03 | 2009-06-03 | Method and device for solving uplink transmission conflict of relay node |
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| CN200910086503.4A CN101908954B (en) | 2009-06-03 | 2009-06-03 | Method and device for solving uplink transmission conflict of relay node |
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| CN102594437A (en) * | 2011-01-12 | 2012-07-18 | 中兴通讯股份有限公司 | Method and system for data transmission |
| WO2013063807A1 (en) * | 2011-11-04 | 2013-05-10 | Renesas Mobile Corporation | Method and apparatus for inter-band carrier aggregation support |
| CN103227699A (en) * | 2012-01-29 | 2013-07-31 | 上海贝尔股份有限公司 | Method and equipment for configuring subframe mapping relation into TDD mode of LTE system |
| CN103916221A (en) * | 2013-01-04 | 2014-07-09 | 中国移动通信集团公司 | Method, device and system for transmitting uplink ACK/NACK message |
| CN104868978A (en) * | 2014-02-26 | 2015-08-26 | 普天信息技术有限公司 | Feedback method and device for downlink subframe of base station and user terminal |
| CN105376849A (en) * | 2014-09-01 | 2016-03-02 | 上海朗帛通信技术有限公司 | LAA method in cellular communication and apparatus thereof |
| CN105933100A (en) * | 2016-06-27 | 2016-09-07 | 珠海市魅族科技有限公司 | HARQ feedback method, HARQ feedback device, base station and terminal |
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| WO2005051024A1 (en) * | 2003-11-20 | 2005-06-02 | Nec Corporation | Mobile communication system using private network, relay node, and radio base control station |
| CN1964225B (en) * | 2005-11-11 | 2013-03-13 | 上海贝尔阿尔卡特股份有限公司 | A method to control wireless access, relay station and base station |
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| CN101431394B (en) * | 2007-11-05 | 2012-01-11 | 中兴通讯股份有限公司 | Mixed automatic retransmission request method for downlink tunnel |
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| CN102594437A (en) * | 2011-01-12 | 2012-07-18 | 中兴通讯股份有限公司 | Method and system for data transmission |
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| CN103916221A (en) * | 2013-01-04 | 2014-07-09 | 中国移动通信集团公司 | Method, device and system for transmitting uplink ACK/NACK message |
| CN104868978A (en) * | 2014-02-26 | 2015-08-26 | 普天信息技术有限公司 | Feedback method and device for downlink subframe of base station and user terminal |
| CN104868978B (en) * | 2014-02-26 | 2018-12-21 | 普天信息技术有限公司 | Base station and user terminal downlink subframe feedback method and device |
| CN105376849A (en) * | 2014-09-01 | 2016-03-02 | 上海朗帛通信技术有限公司 | LAA method in cellular communication and apparatus thereof |
| CN105376849B (en) * | 2014-09-01 | 2020-04-24 | 上海朗帛通信技术有限公司 | LAA method and device in cellular communication |
| CN105933100A (en) * | 2016-06-27 | 2016-09-07 | 珠海市魅族科技有限公司 | HARQ feedback method, HARQ feedback device, base station and terminal |
| CN105933100B (en) * | 2016-06-27 | 2019-09-17 | 珠海市魅族科技有限公司 | HARQ feedback method and device, base station and terminal |
| WO2020258301A1 (en) * | 2019-06-28 | 2020-12-30 | 华为技术有限公司 | Communication method and apparatus |
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Effective date of registration: 20180703 Address after: California, USA Patentee after: Global innovation polymerization LLC Address before: 518057 Nanshan District high tech Industrial Park, Shenzhen, Guangdong, Ministry of justice, Zhongxing Road, South China road. Patentee before: ZTE Corp. |
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