CN104104482A - Method for configuring enhanced physical hybrid automatic retransmission instruction channel - Google Patents
Method for configuring enhanced physical hybrid automatic retransmission instruction channel Download PDFInfo
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Abstract
The invention provides a method for configuring an enhanced physical hybrid automatic retransmission indication channel (EPHICH). The EPHICH is multiplexed in a PDSCH. Preferably, (I) the EPHICH is multiplexed in a physical resource block pair of a common search space (CSS) of an enhanced physical downlink control channel (EPDCCH), or (II) the EPHICH is multiplexed in the physical resource block pair used for transmitting downlink data, or (III) the EPHICH is multiplexed in the physical resource block pair of a user equipment specific search space (USS) of the EPDCCH. Preferably, a base station and user equipment calculate the number of a hybrid automatic retransmission instruction in a resource set of the EPHICH according to the resource position of uplink transmission on the basis of the preset algorithm, and the hybrid automatic retransmission instruction is transmitted or received at the resource position corresponding to the hybrid automatic retransmission instruction of the number so that use of an independent indicator for indicating uplink transmission is saved.
Description
Technical field
The present invention relates to radio communication, relate in particular to the configuration of the channel in radio communication.
Background technology
For uplink being carried out to mixed automatic retransfer feedback (HARQ), there are in the industry several solutions.Wherein one is carrying New Data Flag (NDI) in Downlink Control Information (DCI), and another kind is to use a special physical mixed automatic re-transmission indicating channel (PHICH) to carry out special transmitting HARQ ACK/NACK.Compared with the former, the latter is more efficient and can ensure the feedback of the robust to uplink.
In the existing version 11 of LTE-A, for Physical Downlink Control Channel (PDCCH) is supplemented, a kind of Physical Downlink Control Channel (EPDCCH) of enhancing is proposed.This EPDCCH does not have special transmission resource, but sends among being multiplexed in Physical Downlink Shared Channel (PDSCH).This EPDCCH can the actual Physical Uplink Shared Channel using of scheduling user's set (UE).In version 11, need among traditional PHICH, send by the corresponding ACK/NACK feedback of uplink in Physical Uplink Shared Channel that EPDCCH dispatches.
In the current just LTE-A version 12 in standardisation process, this concept of new carrier type (NCT) is proposed.High data throughput is realized with new carrier type in NCT base station (eNB)/community.In order to achieve this end, the channels such as such as CRS (cell specific reference signal), PHICH (physical mixed automatic re-transmission indicating channel), PCFICH (Physical Control Format Indicator Channel) are all removed from this new carrier type at least in part, to improve the efficiency of spectrum utilization.According to existing standard requirement, the HARQ ACK/NACK that PUSCH is corresponding sends on same carrier wave with the control information of this PUSCH of scheduling.But for NCT, it does not comprise PHICH channel, this can cause HARQ feedback not have resource to use:
1) non-across carrier dispatching in the situation that, the PUSCH on NCT is dispatched by the EPDCCH of this NCT, and the HARQ ACK/NACK feedback that this PUSCH is corresponding cannot send on this NCT;
2) if the PUSCH on NCT is dispatched (across carrier dispatching) by the PDCCH on the traditional carrier wave being associated, and because the PHICH of traditional carrier wave also needs to bear the HARQ ACK/NACK feedback on this tradition carrier wave, thereby, if the HARQ ACK/NACK of the PUSCH to NCT is fed back on the PHICH that is placed on traditional carrier wave and will cause PHICH inadequate resource, may cause conflict.
Summary of the invention
In view of the above shortcoming of prior art, visible, the technology of a kind of configures physical mixed automatic re-transmission indicating channel of needs, for HARQ ACK/NACK configuration provides necessary resource, guarantee HARQ process on request sequential is carried out.Furthermore, also needing a kind of HARQ of instruction ACK/NACK is the method for feedback which uplink is carried out, so that subscriber equipment correctly identifies the corresponding ACK/NACK feedback of its uplink.
Inventive concept of the present invention is, by multiplexing physical mixed automatic re-transmission indicating channel among Physical Downlink Shared Channel.
According to a first aspect of the invention, provide a kind of method of the physical mixed automatic re-transmission indicating channel that configuration strengthens in base station, comprised the steps: i. multiplexing described physical mixed automatic re-transmission indicating channel among Physical Downlink Shared Channel.
According to this aspect, the physical mixed automatic re-transmission indicating channel (EPHICH) of enhancing is positioned among Physical Downlink Shared Channel (PDSCH).For NCT, can among the PDSCH of the NCT without PHICH, transmit the HARQ ACK/NACK feedback to the PUSCH on NCT, fill up the blank that existing NCT cannot efficiently support that autonomous retransmission feeds back.And, this scheme also can be applicable to traditional carrier wave: extra mixed automatic re-transmission indicating channel is provided in the PDSCH of traditional carrier wave, increase the adaptability of system, wherein, this mixed automatic re-transmission indicating channel can feed back this tradition carrier wave itself and/or the PUSCH being dispatched in NCT.
One preferred embodiment in, described step I comprises, the group of physical mixed automatic re-transmission indicating channel is set, this group comprises:
-first kind group, physical mixed automatic re-transmission indicating channel is wherein multiplexed to one or more Physical Resource Block centerings of the public search space of Physical Downlink Control Channel among Physical Downlink Shared Channel, that strengthen, and the plurality of Physical Resource Block is to being continuous or discrete.
In this embodiment, this EPHICH is multiplexed to, among the public search space of EPDCCH, be convenient to improve EPHICH transmission robustness.
Another preferred embodiment in, the group of physical mixed automatic re-transmission indicating channel is set, this group comprises:
-Second Type group, physical mixed automatic re-transmission indicating channel be wherein multiplexed among Physical Downlink Shared Channel, for one or more Physical Resource Block centerings of transmitting downlink data, the plurality of Physical Resource Block is to being continuous or discrete.
In this embodiment, this EPHICH is multiplexed to the resource block pair for transmitting downlink data in PDSCH, has improved the transmission capacity of EPHICH, is convenient to, for multiple subscriber equipmenies provide HARQ feedback, reduce conflict.
Another preferred embodiment in, the group of physical mixed automatic re-transmission indicating channel is set, this group comprises:
-tri-type group, physical mixed automatic re-transmission indicating channel is wherein multiplexed to one or more Physical Resource Block centerings of the specific search volume of subscriber equipment of Physical Downlink Control Channel among Physical Downlink Shared Channel, that strengthen, and the plurality of Physical Resource Block is to being continuous or discrete.
In this embodiment, this EPHICH is multiplexed among the specific search volume of subscriber equipment of EPDCCH, strengthens EPHICH transmission flexibility, reduces ACK/NACK feedback resources expense.
Further preferred, in described step I for this subscriber equipment arranges one or more groups, and while arranging multiple groups the plurality of group can belong to identical or different type.
This preferred embodiment in, can different type group be set for subscriber equipment, improved the diversity of EPHICH configuration.
Further preferred, the method also comprises the steps:
Ii. the resource of described physical mixed automatic re-transmission indicating channel is informed to subscriber equipment, wherein, described step I i is by this subscriber equipment of following information notification:
-be configured the quantity to the group of the physical mixed automatic re-transmission indicating channel of this subscriber equipment;
-each organizes right quantity and the position of Physical Resource Block comprising;
The resource location Physical Resource Block centering in-each group, physical mixed automatic re-transmission indicating channel place.
In this embodiment, the group of EPHICH can be configured to subscriber equipment neatly by base station, has very strong flexibility.In one embodiment, described step I i uses high-level signaling that the resource of described physical mixed automatic re-transmission indicating channel is informed to this subscriber equipment, and described high-level signaling comprises the signaling of RRC signaling or Physical Broadcast Channel.
Alternatively, the resource of described physical mixed automatic re-transmission indicating channel has been stored on this base station and this subscriber equipment.
In this embodiment, do not need extra signaling to inform the resource location at the group place of subscriber equipment EPHICH, saved signaling consumption.
In one embodiment, described multiplexing be to use following any mode: resource punching; Rate-matched.
This execution mode provides multiplexing EPHICH two kinds of concrete multiplexing methods in PDSCH.Wherein, use the advantage of resource punching to be the transparency for user, reduce signaling consumption.And the advantage that uses rate-matched is the robustness of higher transmission.
In one embodiment, when described multiplexing employing rate-matched mode, and in the time comprising first kind group for described group, described step I i obtained before described subscriber equipment initially accesses this base station.
In this embodiment, base station should be before subscriber equipment access by the resource notification of EPHICH to subscriber equipment, make subscriber equipment can not think the EPHICH being multiplexed in EPDCCH by mistake to be the system information that EPDCCH itself carries in the time of initial access, thereby allow the normal reception of system information, and access can normally be carried out.
After having configured EPHICH, the present invention also further provides the process of carrying out HARQ feedback based on configured EPHICH.In one embodiment, the method also comprises the steps:
Iii. according to the schedule information of the uplink to this subscriber equipment, generate mixed automatic retransfer instruction;
Iv. in the resource of the described physical mixed automatic re-transmission indicating channel configuring for this subscriber equipment, this mixed automatic retransfer instruction is sent to this subscriber equipment.
After having configured EPHICH, this execution mode provides the technical scheme of carrying out HARQ feedback based on configured EPHICH, has realized HARQ feedback procedure.
Preferably, in described step I v, send this mixed automatic retransfer indicate with diversity antenna technology, described diversity antenna technology comprises following any one:
-precoding circulation;
-Space-Time Block Coding.
This has preferred embodiment obtained diversity gain, has improved subscriber equipment and has received the receptivity that HARQ feeds back.
Preferably, described step I v comprises the steps:
Iv-1. according to the resource location of described uplink, based on given algorithm, calculate and indicate with mixed automatic retransfer the numbering being associated;
Iv-2. determined, indicate and on the corresponding resource location of numbering being associated, send this mixed automatic retransfer instruction with mixed automatic retransfer.
Correspondingly, in subscriber equipment, also according to the resource location of described uplink, based on given algorithm, calculate the numbering that receives corresponding mixed automatic retransfer instruction in the resource collection of described physical mixed automatic re-transmission indicating channel, and with the corresponding resource location of numbering of determined mixed automatic retransfer instruction on receive this mixed automatic retransfer instruction.
This execution mode provides a kind of technical scheme of HARQ feedback being carried out to implication mark.Base station and subscriber equipment all use given algorithm, and the resource location of uplink is carried out associated with the numbering of the HARQ feedback in EPHICH.As long as determined the resource location of uplink, the numbering of the HARQ feedback in EPHICH is just known in base station, this HARQ numbering corresponds to corresponding resource location, subscriber equipment just sends feedback on this resource location, and subscriber equipment is also known that the HARQ of this numbering feeds back on corresponding EPHICH resource location and received.This execution mode need to expressly not identify this uplink in HARQ feedback, has reduced the expense of HARQ feedback.
Further preferably, this numbering is based on following arbitrary numbering:
A. all mixed automatic retransfer instructions numbering as a whole in the resource collection of the described physical mixed automatic re-transmission indicating channel of all subscriber equipmenies;
B. the instruction of the mixed automatic retransfer in the resource collection of the described physical mixed automatic re-transmission indicating channel of this subscriber equipment is numbered as a whole;
C. the instruction of the mixed automatic retransfer in the resource collection of the described physical mixed automatic re-transmission indicating channel of the same type group of this subscriber equipment is numbered as a whole.
This execution mode provides several different numberings.For b and c mode, the probability clashing with other subscriber equipmenies is lower.
Further preferred, in described step I v-2, before sending this mixed automatic retransfer instruction, first adjust with mixed automatic retransfer and indicate the numbering being associated with bias;
Described step v, before described step I v-2, further comprises:
This bias is sent to this subscriber equipment.
In real network, the mixed automatic retransfer instruction that may calculate multiple subscriber equipmenies just in time can be used same resource location to send.For fear of collision, in this embodiment, be the configuration of certain customers' equipment wherein bias, by the HARQ feedback adjusting to of this subscriber equipment other numberings, indicate thereby send mixed automatic retransfer on different resource locations.
Correspondingly, in subscriber equipment, second aspect of the present invention provides a kind of method of the physical mixed automatic re-transmission indicating channel that configuration strengthens in subscriber equipment, comprises the steps:
I. multiplexing described physical mixed automatic re-transmission indicating channel among Physical Downlink Shared Channel.
Various aspects of the present invention are by the explanation of the specific embodiment by hereinafter and more clear.
Brief description of the drawings
By reading the detailed description that non-limiting example is done of doing with reference to the following drawings, other features, objects and advantages of the present invention will become more apparent:
Fig. 1 is by the schematic diagram of the multiplexing EPDCCH multiplex mode among PDSCH according to an embodiment of the invention, three kinds;
Fig. 2 is the method flow diagram according to an embodiment of the invention.
In the drawings, run through different diagrams, same or similar Reference numeral represents identical or corresponding parts or feature.
Embodiment
The present invention proposes the method for the physical mixed automatic re-transmission indicating channel that configuration strengthens in base station and in subscriber equipment, wherein, multiplexing described physical mixed automatic re-transmission indicating channel (PHICH) among Physical Downlink Shared Channel (PDSCH).Multiplexing PHICH in PDSCH can be called as EPHICH, thereby differentiates with common PHICH channel.
In LTE-A version 11, in PDSCH, except the Physical Resource Block for sending downlink data (DL-SCH channel) is to (PRB pair), also comprise the Physical Resource Block pair of the Physical Downlink Control Channel (EPDCCH) of enhancing.Therefore,, according to above inventive concept of the present invention, physical mixed automatic re-transmission indicating channel can be multiplexed in PDSCH, except the Physical Resource Block centering for sending downlink data, also can be multiplexed in the Physical Resource Block of EPDCCH.Describe respectively these several execution modes below, wherein, the EPHICH of different multiplex modes is called to a certain type group.
-first kind group, wherein, the physical mixed automatic re-transmission indicating channel EPHICH of enhancing is multiplexed to one or more Physical Resource Block centerings of the public search space (CSS) of Physical Downlink Control Channel among Physical Downlink Shared Channel, that strengthen.As shown in I in Fig. 1, EPHICH is multiplexed in the PRB#a and #d at EPDCCH CSS place, and these two Physical Resource Block are to being discrete.Be appreciated that these two Physical Resource Block are to can be also continuous.In the situation that EHICH is multiplexed to multiple PRB, should support distributed transmission.In the execution mode of a variation, EPHICH can only be multiplexed to the PRB#a at EPDCCH place and #d on one of them; Or can be multiplexed on three or more PRB.
-Second Type group, wherein, the physical mixed automatic re-transmission indicating channel of enhancing be multiplexed among Physical Downlink Shared Channel, for one or more Physical Resource Block centerings of transmitting downlink data.As shown in II in Fig. 1, EPHICH is multiplexed in PRB#b, and this PRB#b is originally for transmitting DL-SCH channel.In Fig. 1, EPHICH is multiplexed to a PRB#b.Be appreciated that EPHICH also can be multiplexed to two or more for transmitting the PRB of DL-SCH channel.
-tri-type group, wherein, the physical mixed automatic re-transmission indicating channel EPHICH of enhancing is multiplexed to one or more Physical Resource Block centerings of the specific search volume of subscriber equipment (USS) of Physical Downlink Control Channel among Physical Downlink Shared Channel, that strengthen.As shown in III in Fig. 1, EPHICH is multiplexed in the PRB#c and #e at EPDCCH USS place, and these two Physical Resource Block are to being discrete.Be appreciated that these two Physical Resource Block are to can be also continuous.In the situation that EHICH is multiplexed to multiple PRB, should support distributed transmission.In the execution mode of a variation, EPHICH can only be multiplexed to the PRB#c at EPDCCH USS place and #e on one of them, or can be used on three or more PRB.It should be noted that, although first kind group and the 3rd type group be all by multiplexing EPHICH in EPDCCH, but in existing standard, subscriber equipment carries out respectively demodulation process for CSS and the USS of EPDCCH, therefore, EPHICH is mapped to CSS or USS individually, can be convenient to the reception of subscriber equipment to EPHICH.
Base station can arrange one or more groups of EPHICH for this subscriber equipment.And while arranging multiple groups, the plurality of group can belong to identical or different above type.For example, subscriber equipment has been configured a first kind group and a Second Type group.And while arranging multiple groups, the quantity of the each group of PRB having can be identical or different, for example, as shown in Figure 1, the first kind group that subscriber equipment is configured has two PRB, and Second Type group only has a PRB.Moreover in the time that a type group comprises multiple PRB, for each PRB, EPHICH can be mapped to identical or different mapping mode on each RE in this PRB.For example, in Fig. 1, the EPHICH of first kind group is identical at PRB#a and the mapping mode in PRB#d, and the EPHICH of the 3rd type group is different at PRB#c and the mapping mode in PRB#e.It should be noted that, in order to ensure PDSCH compatibility, the RE that EPHICH is mapped to should not take the transmission position of reference signal (DMRS or CSI-RS), PBCH or synchronizing signal (master sync signal PSS and auxiliary synchronous signals SSS) in PDSCH.
In the shared PRB of EPHICH, it can take all available RE in whole PRB, as shown in II type in Fig. 1; Also can take the part RE in this PRB, as shown in the I in Fig. 1 and III type.
In one case, the resource of the physical mixed automatic re-transmission indicating channel of the enhancing configuring for subscriber equipment, the RE position in PRB number, position and PRB that it comprises, has been stored on this base station and this subscriber equipment.
In-individual alternative execution mode, in order to improve flexibility, the resource of the physical mixed automatic re-transmission indicating channel of enhancing can be configured in real time by base station.In step S20, the mapping mode of EPHICH, based on aforementioned rule, is determined in base station.In step S22, base station is by high-level signaling, and for example PBCH signaling and/or RRC signaling, inform subscriber equipment by the resource of EPHICH.Wherein, base station is by this subscriber equipment of following information notification:
-be configured the quantity to the group of the physical mixed automatic re-transmission indicating channel of this subscriber equipment;
-each organizes right quantity and the position of Physical Resource Block comprising;
The resource location Physical Resource Block centering in-each group, physical mixed automatic re-transmission indicating channel place.
The PRB at the EPHICH place that base station configures for each subscriber equipment is to can be completely independent, or partly overlaps, or even completely overlapping.Overlapping PRB centering, the RE that the EPHICH of each subscriber equipment is mapped to can be completely independent, or partly overlap, or even completely overlapping.
EPHICH is multiplexed in PDSCH when transmitting the PRB of DL-SCH or the PRB at EPDCCH place, can use the resource punching mode of (puncturing) or the mode of rate-matched (rate matching) to carry out multiplexing.These two kinds of multiplex modes itself are that those skilled in the art is known, are not therefore repeating.It should be noted that, when multiplexing be to adopt rate-matched mode, and give user device configuration when first kind group, because EPHICH is multiplexed in the public search space of EPDCCH, EPHICH is thought when the access base station by mistake to the system information in the public search space in EPDCCH for fear of subscriber equipment, so subscriber equipment is before this base station of initial access, should obtain the resource mapping form of EPHICH in the Physical Resource Block of the public search space of EPDCCH, so that the system information in EPHICH and EPDCCH is differentiated.
Correspondingly, in step S30, subscriber equipment receives the resource (PRB and RE) that the indicated EPHICH in base station is mapped to.And in step S32, subscriber equipment sets these resources.
After having configured EPHICH, between base station and subscriber equipment, can carry out HARQ feedback based on this EPHICH, execution mode below will describe in detail the process of HARQ feedback.
In the UL-SCH that subscriber equipment carries in certain ascending resource position (RE), carry out uplink, for example, send upstream data.Base station receives this uplink on this RE, judges whether this uplink information receives successfully, the schedule information using judged result as this uplink after demodulating and decoding.
Then, in step S24, base station, according to the schedule information of the uplink to this subscriber equipment, generates mixed automatic retransfer instruction, for example, in the time receiving successfully, generates ACK, in the time that reception is wrong, generates NACK.
Afterwards, in step S260 and S262, base station, in the resource of the described physical mixed automatic re-transmission indicating channel configuring for this subscriber equipment, sends to this subscriber equipment by this mixed automatic retransfer instruction.
Preferably, in order to improve receiving gain, base station sends this mixed automatic retransfer instruction with diversity antenna technology, and described diversity antenna technology comprises precoding circulation (precoder cycling) or space-time/frequency block code (SFBC).These antenna diversity technique itself is that the general technology of this area is known, and the present invention repeats no more.
In order to save the expense of mixed automatic retransfer instruction, mixed automatic retransfer indicates the RE that sends and the shared ascending resource position of uplink to have relation one to one.Carry out after this uplink at subscriber equipment so, can automatically calculate the RE position at the HARQ feedback place of this uplink, just in this RE HARQ feedback first-class to be received; Correspondingly, base station also can send HARQ ACK/NACK on this RE.Like this, make mixed automatic retransfer instruction itself not need to carry the information of mark uplink, but impliedly represent to be for which uplink, saved signaling consumption by its resource of transmission.
In order to achieve this end, base station and subscriber equipment, all according to the resource location of uplink, based on given algorithm, send the numbering of the resource location of mixed automatic retransfer instruction corresponding to this uplink in the resource collection of calculating EPHICH.This numbering can be indicated corresponding concrete HARQ ACK/NACK based on following certain mode that HARQ ACK/NACK of EPHICH is numbered:
A. all HARQ ACK/NACK in the PRB of the EPHICH of all subscriber equipmenies number as a whole;
B. the HARQ ACK/NACK in the PRB of the EPHICH of this subscriber equipment is numbered as a whole;
C. the HARQ ACK/NACK in the PRB of the EPHICH of the same type group of this subscriber equipment is numbered as a whole.
In base station and subscriber equipment, the HARQ ACK/NACK with given numbering directly corresponds to the multiple RE upper (owing to having carried out repeated encoding, so a HARQ ACK/NACK can take multiple RE) in the PRB of the PEHICH configuring for subscriber equipment.
For with upper type a, be all HARQ ACK/NACK entirety numberings to all EPHICH in whole system.In this case, due to each subscriber equipment PRB that only aware distribution is mapped to its EPHICH, the corresponding numbering of the HARQ ACK/NACK that base station need to be mapped to the EPHICH that distributes to it is so notified to subscriber equipment.
For with upper type b, unique user equipment is mapped to configuration each HARQ ACK/NACK to its EPHICH of all types of groups is numbered.A kind of order of example is for example, according to each HARQ ACK/NACK putting in order in PDSCH, time-frequency sequence of positions.Certainly, also can by other numberings, for example, first according to certain rule, all types of groups be sorted, then again HARQ ACK/NACK is numbered according to the order of type group.Concrete sortord is not that the present invention pays close attention to.
For with upper type c, unique user equipment is respectively for all types of groups, and the HARQ ACK/NACK that the EPHICH of the type group is mapped to is numbered.A kind of order of example is for example, according to each HARQ ACK/NACK putting in order in PDSCH, time-frequency sequence of positions.Certainly, also can, by other numberings, and being not the present invention, concrete sortord pay close attention to.In this case, base station need to be used dynamic signaling, and for example RRC signaling informs which type group subscriber equipment need to use.
According to above design, one of ordinary skill in the art can design and be applicable to appropriate algorithm of the present invention, and the present invention does not repeat the specific implementation of algorithm.
Based on upper type, as shown in Figure 2, in step S340, subscriber equipment, according to the resource at UL-SCH place, calculates the HARQ feedback numbering that EPHIcH carries.
And in step S260, base station, also according to the resource at received UL-SCH place, calculates EPHICH and carries the numbering of HARQ ACK/NACK feedback and find RE correspondingly.Subsequently, in step S262, base station sends this HARQ feedback on this RE.
In step S342, subscriber equipment is according to the HARQ ACK/NACK numbering calculating in step S340, on the corresponding RE of the HARQ of this numbering ACK/NACK, receive this HARQ feedback, thereby know whether its UL-SCH uplink is correctly received by base station.
Numerous subscriber equipmenies have been administered in base station, particularly when across carrier dispatching, need to be for numerous subscriber equipmenies provides EPHICH in limited resource, therefore the HARQ ACK/NACK numbering that aforesaid algorithm calculates for the uplink of different user devices likely can correspond to same group of RE of same PRB centering in actual channel, causes ACK/NACK conflict (collision).In order to address this problem, the present invention proposes following technical scheme:
For a part of subscriber equipment existing in the multiple subscriber equipmenies that conflict, before sending this mixed automatic retransfer instruction, the resource location of the mixed automatic retransfer instruction that sends this subscriber equipment is first adjusted in base station with different biases.Preferably, this bias just enough uses in the scope of positive and negative 3 resource locations, and the message length of 3 bits just can represent this bias.And base station is used dynamic signaling, for example this bias is sent to this subscriber equipment by DCI.Correspondingly, this subscriber equipment before receiving the instruction of this mixed automatic retransfer, first calculate with this received bias adjustment, receive the resource location that this mixed automatic retransfer is indicated.Base station and subscriber equipment respectively on by the RE after this bias adjustment sending and receiving HARQ feed back, avoided conflict.
It should be noted that main inventive concept of the present invention is the configuration of EPHICH in PDSCH, and HARQ feeds back, in EPHICH, specifically how carried is not the present invention is paid close attention to.The scheme of existing PHICH carrying HARQ feedback can be diverted in the present invention, or also can design other bearing modes.These modes all should fall into the protection range of the claims in the present invention.
And, " the physical mixed automatic re-transmission indicating channel of enhancing " in the present invention is not limited to the EPHICH conferring in current LTE-A version 12, and the physical mixed automatic re-transmission indicating channel in any PDSCH of being multiplexed into all falls into the scope of " the physical mixed automatic re-transmission indicating channel of enhancing " of claim.
It should be noted that, above-described embodiment is only exemplary, but not limitation of the present invention.Within any technical scheme that does not deviate from spirit of the present invention all should fall into protection scope of the present invention, this comprises the different technologies feature that use occurs in different embodiment, and installation method can combine, to obtain beneficial effect.In addition, any Reference numeral in claim should be considered as limiting related claim; " comprise " that a word do not get rid of device unlisted in other claims or specification or step.
Claims (15)
1. a method for the physical mixed automatic re-transmission indicating channel that configuration strengthens in base station, comprises the steps:
I. multiplexing described physical mixed automatic re-transmission indicating channel among Physical Downlink Shared Channel.
2. method according to claim 1, is characterized in that, described step I comprises, the group of physical mixed automatic re-transmission indicating channel is set, and this group comprises following at least arbitrary type group:
-first kind group, physical mixed automatic re-transmission indicating channel is wherein multiplexed to one or more Physical Resource Block centerings of the public search space of Physical Downlink Control Channel among Physical Downlink Shared Channel, that strengthen, and the plurality of Physical Resource Block is to being continuous or discrete;
-Second Type group, physical mixed automatic re-transmission indicating channel be wherein multiplexed among Physical Downlink Shared Channel, for one or more Physical Resource Block centerings of transmitting downlink data, the plurality of Physical Resource Block is to being continuous or discrete;
-tri-type group, physical mixed automatic re-transmission indicating channel is wherein multiplexed to one or more Physical Resource Block centerings of the specific search volume of subscriber equipment of Physical Downlink Control Channel among Physical Downlink Shared Channel, that strengthen, and the plurality of Physical Resource Block is to being continuous or discrete.
3. method according to claim 2, is characterized in that, in described step I for this subscriber equipment arranges one or more groups, and while arranging multiple groups the plurality of group can belong to identical or different type;
The method also comprises the steps:
Ii. the resource of described physical mixed automatic re-transmission indicating channel is informed to subscriber equipment, wherein, described step I i is by this subscriber equipment of following information notification:
-be configured the quantity to the group of the physical mixed automatic re-transmission indicating channel of this subscriber equipment;
-each organizes right quantity and the position of Physical Resource Block comprising;
The resource location Physical Resource Block centering in-each group, physical mixed automatic re-transmission indicating channel place;
Or the resource of described physical mixed automatic re-transmission indicating channel has been stored on this base station and this subscriber equipment.
4. method according to claim 3, is characterized in that, described multiplexing be to use following any mode:
The punching of-resource;
-rate-matched;
And when described multiplexing employing rate-matched mode, and in the time comprising first kind group for described group, described step I i obtained before described subscriber equipment initially accesses this base station.
5. method according to claim 3, is characterized in that, described step I i uses high-level signaling that the resource of described physical mixed automatic re-transmission indicating channel is informed to this subscriber equipment, and described high-level signaling comprises the signaling of RRC signaling or Physical Broadcast Channel;
The method also comprises the steps:
Iii. according to the schedule information of the uplink to this subscriber equipment, generate mixed automatic retransfer instruction;
Iv. in the resource of the described physical mixed automatic re-transmission indicating channel configuring for this subscriber equipment, this mixed automatic retransfer instruction is sent to this subscriber equipment.
6. method according to claim 5, is characterized in that, in described step I v, sends this mixed automatic retransfer indicate with diversity antenna technology, and described diversity antenna technology comprises following any one:
-precoding circulation;
-Space-Time Block Coding.
7. method according to claim 5, is characterized in that, described step I v comprises the steps:
Iv-1. according to the resource location of described uplink, based on given algorithm, calculate and indicate with mixed automatic retransfer the numbering being associated;
Iv-2. determined, indicate and on the corresponding resource location of numbering being associated, send this mixed automatic retransfer instruction with mixed automatic retransfer;
Wherein, this numbering is based on following arbitrary numbering:
A. all mixed automatic retransfer instructions numbering as a whole in the resource collection of the described physical mixed automatic re-transmission indicating channel of all subscriber equipmenies;
B. the instruction of the mixed automatic retransfer in the resource collection of the described physical mixed automatic re-transmission indicating channel of this subscriber equipment is numbered as a whole;
C. the instruction of the mixed automatic retransfer in the resource collection of the described physical mixed automatic re-transmission indicating channel of the same type group of this subscriber equipment is numbered as a whole;
Wherein, when this numbering is during based on described regular a, described step I v also comprised before described step I v-2:
-notify this subscriber equipment by the numbering of the mixed automatic retransfer instruction in the resource collection of the described physical mixed automatic re-transmission indicating channel of this subscriber equipment;
When this numbering is during based on described regular c, in described step I v-1, also comprise, determine it is to send this mixed automatic retransfer instruction on the resource location of the resource collection of which type group, and described step I v also comprised before iv-2:
-determined type group is notified to this subscriber equipment.
8. method according to claim 7, is characterized in that, in described step I v-2, before sending this mixed automatic retransfer instruction, first adjusts with mixed automatic retransfer and indicates the numbering being associated with bias;
Described step v, before described step I v-2, further comprises:
This bias is sent to this subscriber equipment.
9. a method for the physical mixed automatic re-transmission indicating channel that configuration strengthens in subscriber equipment, comprises the steps:
I. multiplexing described physical mixed automatic re-transmission indicating channel among Physical Downlink Shared Channel.
10. method according to claim 9, is characterized in that, described step I comprises, the group of physical mixed automatic re-transmission indicating channel is set, and this group comprises following at least arbitrary type group:
-first kind group, physical mixed automatic re-transmission indicating channel is wherein multiplexed to one or more Physical Resource Block centerings of the public search space of Physical Downlink Control Channel among Physical Downlink Shared Channel, that strengthen, and the plurality of Physical Resource Block is to being continuous or discrete;
-Second Type group, physical mixed automatic re-transmission indicating channel be wherein multiplexed among Physical Downlink Shared Channel, for one or more Physical Resource Block centerings of transmitting downlink data, the plurality of Physical Resource Block is to being continuous or discrete;
-tri-type group, physical mixed automatic re-transmission indicating channel is wherein multiplexed to one or more Physical Resource Block centerings of the specific search volume of subscriber equipment of Physical Downlink Control Channel among Physical Downlink Shared Channel, that strengthen, and the plurality of Physical Resource Block is to being continuous or discrete.
11. methods according to claim 10, is characterized in that, in described step I for this subscriber equipment arranges one or more groups, and while arranging multiple groups the plurality of group can belong to identical or different type;
The method also comprises the steps:
Ii. receive the resource from physical mixed automatic re-transmission indicating channel base station, described, wherein, receive the following information from this base station:
-be configured the quantity to the group of the physical mixed automatic re-transmission indicating channel of this subscriber equipment;
-each organizes right quantity and the position of Physical Resource Block comprising;
The resource location Physical Resource Block centering in-each group, physical mixed automatic re-transmission indicating channel place;
Or the resource of described physical mixed automatic re-transmission indicating channel has been stored on this subscriber equipment and this base station.
12. methods according to claim 11, is characterized in that, described multiplexing be to use following any mode:
The punching of-resource;
-rate-matched;
And when described multiplexing employing rate-matched mode, and in the time comprising first kind group for described group, described step I i obtained before described subscriber equipment initially accesses this base station.
13. methods according to claim 11, is characterized in that, described step I i uses high-level signaling to receive the resource of described physical mixed automatic re-transmission indicating channel, and described high-level signaling comprises the signaling of RRC signaling or Physical Broadcast Channel;
The method also comprises the steps:
Iii. in the resource of the described physical mixed automatic re-transmission indicating channel configuring for this subscriber equipment, receive from base station, for the mixed automatic retransfer instruction of uplink.
14. methods according to claim 13, is characterized in that, described step I ii comprises the steps:
Iii-1. according to the resource location of described uplink, based on given algorithm, calculate and indicate with mixed automatic retransfer the numbering being associated;
Iii-2. determined, indicate and on the corresponding resource location of numbering being associated, receive this mixed automatic retransfer instruction with mixed automatic retransfer;
Wherein, this numbering is based on following arbitrary numbering:
A. all mixed automatic retransfer instructions numbering as a whole in the resource collection of the described physical mixed automatic re-transmission indicating channel of all subscriber equipmenies;
B. the instruction of the mixed automatic retransfer in the resource collection of the described physical mixed automatic re-transmission indicating channel of this subscriber equipment is numbered as a whole;
C. the instruction of the mixed automatic retransfer in the resource collection of the described physical mixed automatic re-transmission indicating channel of the same type group of this subscriber equipment is numbered as a whole;
Wherein, when this numbering is during based on described regular a, described step I v also comprised before described step I ii-2:
-reception is from the numbering of the mixed automatic retransfer instruction in the resource collection of described physical mixed automatic re-transmission indicating channel this base station, this subscriber equipment;
When this numbering is during based on described regular c, described step I ii also comprised before iii-2:
-receive from type group this base station, this mixed automatic retransfer instruction place.
15. methods according to claim 15, is characterized in that, described step I v, before described step I ii-2, further comprises:
-reception is from the bias of numbering base station, mixed automatic retransfer instruction;
In described step I ii-2, before receiving this mixed automatic retransfer instruction, first adjust to receive with this bias and indicate with this mixed automatic retransfer the numbering being associated.
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