CN103220792A - Method and device for configuring related physical hybrid-ARQ indicator channel (PHICH) associated with physical uplink shared channel (PUSCH) - Google Patents
Method and device for configuring related physical hybrid-ARQ indicator channel (PHICH) associated with physical uplink shared channel (PUSCH) Download PDFInfo
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Abstract
The invention provides a method and a device for configuring a related physical hybrid-ARQ indicator channel (PHICH) associated with a physical uplink shared channel (PUSCH), and the method and the device can effectively realize the association between the PUSCH and the PHICH. The related PHICH is located in one of a remaining PHICH region and an enhanced PHICH (ePHICH) region. A method used for configuring the related PHICH associated with the PUSCH of a user device in a base station of a communication system comprises sending region instruction information to the user device for instructing the region where the related PHICH is located, and sending association instruction information to the user device for instructing the related PHICK in the region which is instructed in the region instruction information. A method used for configuring the related PHICH associated with the PUSCH in the user device of the communication system comprises receiving the region instruction information which is used for instructing the region where the related PHICH is located; receiving the association instruction information which is used for instructing the related PHICH in the region instructed in the region instruction information, and determining the related PHICH according to the received region instruction information and the received association instruction information.
Description
Technical field
The present invention relates to communication system, relate in particular to the method and apparatus that is used to dispose the related PHICH that is associated with PUSCH.
Background technology
In the LTE-A system, PHICH (Physical Hybrid-ARQ Indicator Channel, the automatic repeat requests indicating channel of physical mixed) carrying HARQ ACK/NACK (mixing automatic repeat requests feedback), it is used to indicate base station (eNodeB) whether successfully to receive subscriber equipment (User Equipment, UE) transmission on its PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel).Each PHICH is associated with a PUSCH.
Recently, be desirably in day by day and introduce ePHICH (enhanced PHICH in the LTE-A system, the PHICH that strengthens), thereby support frequency domain ICIC (Inter-Cell Interference Coordination, Inter-Cell Interference Coordination) and satisfy cooperative multipoint transmission (Coordinated Multi-Point transmission, CoMP) in the demand of a large amount of ACK/NACK.
The PHICH that leaves over (legacy PHICH) is arranged in control domain, and uses the transmit diversity mode to transmit to increase the robustness of transmission.EPHICH is arranged in data field, supports closed loop transmission, thereby can realize effective utilization of Radio Resource based on channel condition information.In addition, ePHICH still supports open-loop transmission, thereby can be particularly in the robustness that does not have to guarantee under the situation of channel condition information transmission.
After introducing ePHICH, for a certain subscriber equipment, the PHICH that is associated with its PUSCH may be positioned at one of following three zones: the PHICH zone of leaving over, the ePHICH zone of using open-loop transmission, and the ePHICH zone of using closed loop transmission.This makes subscriber equipment can't determine to search which zone to obtain the HARQ feedback about the transmission on its PUSCH.
In addition, for the ePHICH zone, because the difference (open-loop transmission or closed loop transmission) of transmission plan, the identification means of PHICH wherein also can corresponding difference.This makes related between configuration PUSCH and the PHICH become more uncertain.
Summary of the invention
The problems referred to above at prior art, one of purpose of the present invention provides a kind of related scheme that is used to dispose between PUSCH and the PHICH, it can realize related between PUSCH and the PHICH effectively, thereby makes related PHICH that subscriber equipment can determine to be associated with its PUSCH effectively to obtain corresponding HARQ feedback from this related PHICH.
According to an aspect of the present invention, provide a kind of method that is used to dispose the related PHICH that is associated with the PUSCH of subscriber equipment in the base station of communication system, wherein said related PHICH is positioned at one of the PHICH zone left over and ePHICH zone.Said method comprising the steps of: to described subscriber equipment sending zone indication information, the zone that it indicates described related PHICH to be positioned at; Send related indication information to described subscriber equipment, it indicates the described related PHICH in the indicated zone of described regional indication information.
Thus, subscriber equipment can be determined the related PHICH related with its PUSCH effectively.Particularly, according to the regional indication information that is received, subscriber equipment can determine which zone the related PHICH related with its PUSCH is arranged in, and according to the related indication information that is received, subscriber equipment can know further which among the PHICH that is comprised in the determined zone this association PHICH be.
According to a specific embodiment of the present invention, described ePHICH zone comprises a plurality of ePHICH subregions; When described regional indication information was indicated described ePHICH, described regional indication information is the indication subregion that described related PHICH was positioned at further.
Preferably, use different transmission plans in described a plurality of ePHICH subregion.In an example, described a plurality of ePHICH subregions comprise an ePHICH subregion and the 2nd ePHICH subregion, use the open-loop transmission scheme in a described ePHICH subregion, use the closed loop transmission scheme in described the 2nd ePHICH subregion.
Can represent described related indication information in many ways.
According to a specific embodiment of the present invention, described related indication information comprises the sum of the PHICH in the indicated zone of described regional indication information.
According to another specific embodiment of the present invention, described related indication information comprises the sign of described related PHICH.
Can send described regional indication information and described related indication information in many ways.Described regional indication information can send with semi-static mode or dynamical fashion.When described related indication information comprised PHICH in the indicated zone of described regional indication information total, this association indication information can send with semi-static mode or dynamical fashion; When described related indication information comprised the sign of described related PHICH, this association indication information sent with dynamical fashion.
When sending described regional indication information and/or described related indication information with dynamical fashion, these information can be carried by the uplink assignment dispatch of the PUSCH of subscriber equipment.
According to another aspect of the present invention, a kind of method that is used to dispose the related PHICH that is associated with the PUSCH of described subscriber equipment in the subscriber equipment of communication system is provided, and wherein said related PHICH is positioned at one of the PHICH zone left over and ePHICH zone.Said method comprising the steps of: a. receiving area indication information, the zone that it indicates described related PHICH to be positioned at; B. receive related indication information, it indicates the described related PHICH in the indicated zone of described regional indication information; And c. determines described related PHICH according to regional indication information that is received and the related indication information that is received.
According to a specific embodiment of the present invention, described related indication information comprises the sum of the PHICH in the indicated zone of described regional indication information; Described step c comprises: c1. obtains the index of described PUSCH; C2. according to the sum of described PHICH and the index of the described PUSCH that obtained, determine the index of described related PHICH.
Can obtain the index of described PUSCH in many ways.For example, in step c1, according to the index of the Physical Resource Block that is used to transmit described PUSCH, be used to transmit the index, the cyclic shift index of described demodulated reference signal of initialization sequence of the demodulated reference signal of described PUSCH, obtain the index of described PUSCH.
According to another specific embodiment of the present invention, described related indication information comprises the sign of described related PHICH.
The sign that can represent described related PHICH in many ways.For example, the sign of described related PHICH comprises: be used to transmit the index of the Physical Resource Block of described related PHICH, the index of the PHICH group under the described related PHICH, the index of the pairing orthogonal sequence of described related PHICH.
According to a further aspect of the invention, provide a kind of first device that is used to dispose the related PHICH that is associated with the PUSCH of subscriber equipment in the base station of communication system, wherein, described related PHICH is positioned at one of the PHICH zone left over and ePHICH zone.Described first device comprises: first transmitting element is used for to described subscriber equipment sending zone indication information, the zone that it indicates described related PHICH to be positioned at; Second transmitting element is used for sending related indication information to described subscriber equipment, and it indicates the described related PHICH in the indicated zone of described regional indication information.
According to a further aspect of the invention, a kind of second device that is used to dispose the related PHICH that is associated with the PUSCH of described subscriber equipment in the subscriber equipment of communication system is provided, wherein, described related PHICH is positioned at one of the PHICH zone left over and ePHICH zone.Described second device comprises: first receiving element is used for the receiving area indication information, the zone that it indicates described related PHICH to be positioned at; Second receiving element is used to receive related indication information, and it indicates the described related PHICH in the indicated zone of described regional indication information; And determining unit, be used for according to regional indication information that is received and the related indication information that is received, determine described related PHICH.
Description of drawings
By reading the detailed description of hereinafter with reference to the following drawings non-limiting specific embodiment being done, it is more obvious that other features, objects and advantages of the present invention will become.
Fig. 1 shows the schematic diagram according to the subframe of the communication system of a specific embodiment of the present invention;
Fig. 2 shows the method flow diagram that is used to dispose the related PHICH that is associated with the PUSCH of subscriber equipment in the base station of communication system according to a specific embodiment of the present invention;
Fig. 3 shows first schematic representation of apparatus that is used to dispose the related PHICH that is associated with the PUSCH of subscriber equipment in the base station of communication system according to a specific embodiment of the present invention;
Fig. 4 shows the method flow diagram that is used to dispose the related PHICH that is associated with the PUSCH of described subscriber equipment in the subscriber equipment of communication system according to a specific embodiment of the present invention;
Fig. 5 shows second schematic representation of apparatus that is used to dispose the related PHICH that is associated with the PUSCH of described subscriber equipment in the subscriber equipment of communication system according to a specific embodiment of the present invention;
Fig. 6 shows the schematic diagram of cell according to comprising of a specific embodiment of the present invention described regional indication information and described related indication information; And
Fig. 7 shows according to a schematic diagram specific embodiment of the present invention, carried described regional indication information and/or described related indication information in the FDD system by the uplink assignment dispatch of described PUSCH.
Specific embodiment
Fig. 1 shows the schematic diagram according to the subframe of the communication system of a specific embodiment of the present invention.In general, each subframe comprises a plurality of PHICH.PHICH is divided into PHICH and the ePHICH that leaves over.For a subscriber equipment, the PHICH that is associated with its PUSCH may be the PHICH that leaves over, and also may be ePHICH.
With reference to Fig. 1, subframe comprises control domain and data field.The PHICH zone of leaving over is arranged in control domain, and comprises a plurality of PHICH that leave over.The ePHICH zone is arranged in data field, and comprises an ePHICH subregion and the 2nd ePHICH subregion, and it comprises at least one ePHICH respectively.The one ePHICH subregion can use different transmission plans with ePHICH in the 2nd ePHICH subregion.For example, use open-loop transmission in the ePHICH subregion, use closed loop transmission in the 2nd ePHICH subregion.
Below with reference to Fig. 2 and Fig. 3 the scheme that is used to dispose the related PHICH that is associated with the PUSCH of subscriber equipment in the base station of communication system according to a specific embodiment of the present invention is described.
Fig. 2 shows the method flow diagram that is used to dispose the related PHICH that is associated with the PUSCH of subscriber equipment in the base station of communication system according to a specific embodiment of the present invention.Fig. 3 shows first schematic representation of apparatus that is used to dispose the related PHICH that is associated with the PUSCH of subscriber equipment in the base station of communication system according to a specific embodiment of the present invention.This first device 300 comprises first transmitting element 310 and second transmitting element 320.
In step S210, first transmitting element 310 is to subscriber equipment sending zone indication information, the zone that it indicates described related PHICH to be positioned at.
In step S220, second transmitting element 310 sends related indication information to subscriber equipment, and it indicates the described related PHICH in the indicated zone of described regional indication information.
In addition, the base station can also comprise the associative cell (not shown).Before step S210 and S220, this associative cell determines the PUSCH of subscriber equipment with which PHICH is associated.This associative cell can be arranged in first device 300, also can be separated with first device 300.
Below with reference to Fig. 4 and Fig. 5 the scheme that is used to dispose the related PHICH that is associated with the PUSCH of described subscriber equipment in the subscriber equipment of communication system according to a specific embodiment of the present invention is described.
Fig. 4 shows the method flow diagram that is used to dispose the related PHICH that is associated with the PUSCH of described subscriber equipment in the subscriber equipment of communication system according to a specific embodiment of the present invention.Fig. 5 shows second schematic representation of apparatus that is used to dispose the related PHICH that is associated with the PUSCH of described subscriber equipment in the subscriber equipment of communication system according to a specific embodiment of the present invention.This second device 500 comprises first receiving element 510, second receiving element 520 and determining unit 530.
In step S410, first receiving element 510 receives the regional indication information from the base station, the zone that it indicates described related PHICH to be positioned at.
In step S420, second receiving element 520 receives the related indication information from the base station, and it indicates the described related PHICH in the indicated zone of described regional indication information.
In step S430, determining unit 530 is determined described related PHICH according to regional indication information that is received and the related indication information that is received.
To be further described with above-mentioned related indication information the above-mentioned zone indication information below.
The zone that the zone indication information indicates related PHICH to be positioned at.As mentioned above, the PHICH zone of leaving over may be arranged in, also the ePHICH zone may be arranged in the related PHICH that the PUSCH of subscriber equipment is associated.Thus, regional indication information can be indicated PHICH zone or the ePHICH zone of leaving over.For example, regional indication information can take a bit, with the PHICH zone that " 0 " expression is left over, represents the ePHICH zone with " 1 ".
According to a specific embodiment of the present invention, the ePHICH zone comprises a plurality of ePHICH subregions.For example, as shown in Figure 1, ePHICH comprises an ePHICH subregion and the 2nd ePHICH subregion.Thus, when related PHICH is arranged in ePHICH, that ePHICH subregion that regional indication information can further be indicated related PHICH and is positioned at.For example, regional indication information can take two bits, with the PHICH zone that " 0 " expression is left over, with " 1 " expression the one ePHICH subregion, represents the 2nd ePHICH subregion with " 2 ".
Described related PHICH in the indicated zone of related indication information indicating area indication information.By regional indication information, subscriber equipment can be determined the zone that is positioned at related PHICH.In general, comprise a plurality of PHICH in this zone.Further, subscriber equipment determines by related indication information, and related PHICH is which of a plurality of PHICH in the indicated zone of regional indication information.
According to a specific embodiment of the present invention, related indication information can be with implicit representation.Particularly, related indication information comprises the sum of the PHICH in the indicated zone of regional indication information.Correspondingly, subscriber equipment is derived related PHICH based on a predetermined rule according to related indication information.
For example, subscriber equipment can calculate the index I of related PHICH by following formula
PHICH:
I
PHICH＝I
PUSCH mod N
PHICH (1)
Wherein, I
PUSCHBe the index of the PUSCH of subscriber equipment, N
PHICHIt is the sum of the PHICH in the indicated zone of regional indication information.Correspondingly, subscriber equipment at first obtains the index I of PUSCH in step S430 (Fig. 4)
PUSCH, follow the index I that determines related PHICH by formula (1)
PHICH
According to the difference of the employed transmission means of PUSCH, obtain the index I of PUSCH
PUSCHMode also may be different.
In an example, subscriber equipment calculates the index I of PUSCH by following formula
PUSCH:
I
PUSCH＝I
PRB_RA+n
DMRS (2)
Wherein, I
PRB RABe Physical Resource Block (Physical Resource Block, index PRB), the n that is used to transmit PUSCH
DMRSBe demodulated reference signal (Demodulation Reference Signal, cyclic shift DMRS) that is used to transmit PUSCH.
In another example, PUSCH uses the CoMP transmission means.Correspondingly, subscriber equipment can calculate the index I of PUSCH by following formula
PUSCH:
I
PUSCH＝I
PRB_RA+I
DMRS+n
DMRS (3)
Wherein, I
PRB RABe the index that is used to transmit the Physical Resource Block of PUSCH, I
DMRSBe the index of initialization sequence that is used to transmit the demodulated reference signal of PUSCH, n
DMRSIt is the cyclic shift of demodulated reference signal.
Alternatively, subscriber equipment can calculate the index I of PUSCH by following formula
PUSCH:
I
PUSCH＝I
PRB_RA+N
DMRS×I
DMRS+n
DMRS (4)
Wherein, N
DMRSIt is the sum of the initialization sequence of demodulated reference signal.This mode helps reducing the possibility of HARQ feedback conflict.
According to another specific embodiment of the present invention, related indication information can be with explicit representation.Particularly, related indication information comprises the sign of related PHICH.
According to the difference of the employed transmission means of PHICH, the expression of the sign of PHICH also may be different.
In an example, the PHICH in each PHICH zone is divided into a plurality of groups, and the different PHICH in each PHICH group shares identical physical resource, and is separated from each other by orthogonal sequence (as quadrature Walsh sign indicating number).Thereby the sign of related PHICH can be expressed as index to (I
Group, I
Seq_RE_level), I wherein
GroupBe the index of PHICH group under the related PHICH, and I
Seq_RE_levelIt is the index of the pairing orthogonal sequence of related PHICH.
In another example, PHICH on each Physical Resource Block (PBR) group all is independent index.Thereby the sign of related PHICH can be expressed as index to (I
PRB, I
Group, I
Seq_RE_level), I wherein
PRBIt is the index of the Physical Resource Block at PHICH group place under the related PHICH.
To describe the send mode of above-mentioned zone indication information and above-mentioned related indication information below in detail.
The zone indication information can either send in semi-static (semi-static) mode, also can send in dynamic (dynamic) mode.Similarly, the related indication information of implicit expression (sum of the PHICH that the zone comprised that regional indication information is indicated) also can send with semi-static mode or dynamical fashion.
According to a specific embodiment of the present invention, the related indication information of sending zone indication information and implicit expression simultaneously in same signaling, thus can reduce signaling consumption.
Fig. 6 shows the schematic diagram according to the cell of the inclusion region indication information of a specific embodiment of the present invention and related indication information.As shown in Figure 6, PHICH configuration cell ePHICH-Config information element comprises regional indication information ephich-Region and related indication information ephich-Number.Zone indication information ephich-Region is defined as enumerated variable, its value PHICH is corresponding to the PHICH zone of leaving over, value ePHICH-OpenLoop is corresponding to an ePHICH subregion that uses open-loop transmission, and value ePHICH-ClosedLoop is corresponding to the 2nd ePHICH subregion that uses closed loop transmission.Related indication information ephich-Number is an integer variable, the sum of the PHICH that the zone comprised that the indicating area indication information is indicated.
Different with the related indication information of implicit expression, explicit related indication information comprises the sign of related PHICH, need send with dynamical fashion usually thus.
No matter be, all need to come sending zone indication information and related indication information by corresponding signaling in semi-static mode or with dynamical fashion.
When adopting semi-static mode, can use high-level signaling (for example RRC signaling, MAC control signaling, PBCH etc.) to come configuring area indication information and/or related indication information.
When adopting dynamical fashion, can come configuring area indication information and/or related indication information by following several different modes.
According to a specific embodiment of the present invention, can define a new DCI (Downlink Control Information, Downlink Control Information) and come bearing area indication information and/or related indication information.Preferably, can with ePDCCH dynamic configuration information sending zone indication information together and/or related indication information, to reduce signaling consumption.For example, can expand by the DCI that comprises the ePDCCH dynamic configuration information with inclusion region indication information and/or related indication information.
According to another specific embodiment of the present invention, can come bearing area indication information and/or related indication information by the uplink assignment dispatch of PUSCH.
Fig. 7 show according in the FDD system of a specific embodiment of the present invention by the uplink assignment dispatch bearing area indication information of PUSCH and/or the schematic diagram of related indication information.With reference to Fig. 7, before the PUSCH transmission, the base station sends uplink assignment scheduling (UL grant scheduling) signaling to subscriber equipment, and it comprises the information of the resource allocation (Resource Allocation) of indicating this PUSCH.In addition, also comprise regional indication information and/or related indication information in this uplink assignment dispatch, it is used to indicate the related PHICH related with this PUSCH.Related PHICH carrying HARQ ACK/NACK, whether its indication base station successfully receives the transmission of subscriber equipment on its PUSCH.As shown in Figure 7, in the FDD system, comprise the interval that has 8 subframes between the related PHICH of uplink assignment dispatch of related PHICH configuration information (being regional indication information and/or related indication information) with this.In the LTE-A system, the length of each subframe is 1ms.Thus, in the FDD system, there is the delay of 8ms between the configuration information of PHICH and the PHICH self.This delay is acceptable.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and under the situation that does not deviate from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, therefore scope of the present invention is limited by claims rather than above-mentioned explanation, is intended to all changes that fall into or fall into based on doctrine of equivalents in the scope of claim are included in the present invention.Any Reference numeral in the claim should be considered as limit related claim.In addition, obviously other unit or step do not got rid of in " comprising " speech, and odd number is not got rid of plural number.A plurality of unit of stating in system's claim or device also can be realized by software or hardware by a unit or device.The first, the second word such as grade is used for representing title, and does not represent any specific order.
Claims (15)
1. method that in the base station of communication system, is used to dispose the related PHICH that is associated with the PUSCH of subscriber equipment, wherein, described related PHICH is positioned at one of the PHICH zone left over and ePHICH zone, said method comprising the steps of:
To described subscriber equipment sending zone indication information, the zone that it indicates described related PHICH to be positioned at;
Send related indication information to described subscriber equipment, it indicates the described related PHICH in the zone indicated in the described regional indication information.
2. method according to claim 1, wherein,
Described ePHICH zone comprises a plurality of ePHICH subregions;
When described regional indication information was indicated described ePHICH, described regional indication information is the indication subregion that described related PHICH was positioned at further.
3. method according to claim 2, wherein, described a plurality of ePHICH subregion comprises an ePHICH subregion and the 2nd ePHICH subregion, uses the open-loop transmission scheme in a described ePHICH subregion, uses the closed loop transmission scheme in described the 2nd ePHICH subregion.
4. method according to claim 1, wherein, described related indication information comprises the sum of the PHICH in the zone indicated in the described regional indication information.
5. method according to claim 1, wherein, described related indication information comprises the sign of described related PHICH.
6. method according to claim 1, wherein, described regional indication information sends with semi-static mode or dynamical fashion.
7. method according to claim 4, wherein, described related indication information sends with semi-static mode or dynamical fashion.
8. method according to claim 5, wherein, described related indication information sends with dynamical fashion.
9. method according to claim 8, wherein, described related indication information is by the uplink assignment dispatch carrying of described PUSCH.
10. method that in the subscriber equipment of communication system, is used to dispose the related PHICH that is associated with the PUSCH of described subscriber equipment, wherein, described related PHICH is positioned at one of the PHICH zone left over and ePHICH zone, said method comprising the steps of:
A. receiving area indication information, the zone that it indicates described related PHICH to be positioned at;
B. receive related indication information, it indicates the described related PHICH in the zone indicated in the described regional indication information; And
C. according to regional indication information that is received and the related indication information that is received, determine described related PHICH.
11. method according to claim 10, wherein,
Described related indication information comprises the sum of the PHICH in the zone indicated in the described regional indication information;
Described step c comprises:
C1. obtain the index of described PUSCH;
C2. according to the sum of described PHICH and the index of the described PUSCH that obtained, determine the index of described related PHICH.
12. method according to claim 11, wherein, among the described step c1, according to the index of the Physical Resource Block that is used to transmit described PUSCH, be used to transmit the index, the cyclic shift index of described demodulated reference signal of initialization sequence of the demodulated reference signal of described PUSCH, obtain the index of described PUSCH.
13. method according to claim 10, wherein, described related indication information comprises the sign of described related PHICH, it comprises the index of the Physical Resource Block that is used to transmit described related PHICH, the index of the PHICH group under the described related PHICH, the index of the pairing orthogonal sequence of described related PHICH.
14. first device that is used to dispose the related PHICH that is associated with the PUSCH of subscriber equipment in the base station of communication system, wherein, described related PHICH is positioned at one of the PHICH zone left over and ePHICH zone, and described first device comprises:
First transmitting element is used for to described subscriber equipment sending zone indication information, the zone that it indicates described related PHICH to be positioned at;
Second transmitting element is used for sending related indication information to described subscriber equipment, and it indicates the described related PHICH in the zone indicated in the described regional indication information.
15. second device that is used to dispose the related PHICH that is associated with the PUSCH of described subscriber equipment in the subscriber equipment of communication system, wherein, described related PHICH is positioned at one of the PHICH zone left over and ePHICH zone, and described second device comprises:
First receiving element is used for the receiving area indication information, the zone that it indicates described related PHICH to be positioned at;
Second receiving element is used to receive related indication information, and it indicates the described related PHICH in the zone indicated in the described regional indication information; And
Determining unit is used for according to regional indication information that is received and the related indication information that is received, and determines described related PHICH.
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| WO2014183475A1 (en) * | 2013-10-16 | 2014-11-20 | 中兴通讯股份有限公司 | Ephich transmitting and receiving method and system |
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