CN102469048A - Method and system for determining a relay physical downlink control channel search space - Google Patents
Method and system for determining a relay physical downlink control channel search space Download PDFInfo
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- CN102469048A CN102469048A CN2010105513886A CN201010551388A CN102469048A CN 102469048 A CN102469048 A CN 102469048A CN 2010105513886 A CN2010105513886 A CN 2010105513886A CN 201010551388 A CN201010551388 A CN 201010551388A CN 102469048 A CN102469048 A CN 102469048A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
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- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
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- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
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- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
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Abstract
The invention discloses a method and system for determining a relay physical downlink control channel search space, which includes a base station respectively setting an offset for an initial location of a search space corresponding to an aggregation level L. RN determining the search space corresponding to each aggregation level L according to the set offset when blind-detecting an R-PDCCH. By means of the invention in a communication system, which offers a method that how could a relay node search the downlink control channel which belongs to own. The invention is applicable to the relay node, so as to ensure that the relay node has a lower degree of complexity when blind-detecting a relay physical downlink control channel, and covers reserved RB as many as possible, thereby improving the efficiency of the whole system.
Description
Technical field
The present invention relates to relaying GSM blind Detecting technology, refer to the method and system of a kind of definite down control channel (R-PDCCH) search volume (SS) especially.
Background technology
Because following radio communication or cellular system require to increase coverage, support the higher rate transmission that this has proposed new challenge to wireless communication technology.Simultaneously, the cost issues of system building and maintenance is more outstanding.Along with the increase of transmission rate and communication distance, it is outstanding that the energy consumption issues of battery also becomes, and following radio communication will adopt higher frequency, and the pathloss attenuation that causes thus will be more serious.In order to increase the coverage of high data rate, group mobility, casual network deployment; Improve the throughput of cell edge; And service is provided for the user in the covering leak of cellular system; Introduced relaying (Relay) technology in the wireless communication system, so relaying technique is regarded as a key technology of the 4th generation (4G) radio communication.
Long Term Evolution (LTE; Long Term Evolution) system, senior Long Term Evolution (LTE-A; LTE-Advanced) system and senior international mobile communication (IMT-Advanced; International Mobile Telecommunication Advanced) system all be with OFDM (OFDM, Orthogonal Frequency Division Multiplexing) technology be the basis.
Ofdm system is the data mode of time-frequency two-dimensional.1 sub-frame (subframe) is made up of 2 time slots (slot), and during normal cyclic prefix (CP, Cyclic Prefix), each slot is made up of 7 OFDM symbols; During expansion CP, each slot is made up of 6 OFDM symbols.Wherein, down control channel (PDCCH, Physical Downlink Control Channel) is positioned on preceding 1 or 2 or 3 or 4 OFDM symbol of each subframe.
In the LTE system, PDCCH is made up of several different parts, and each part all has its particular functionality.Describe for ease, below several terms of explanation and agreement:
1, Resource Unit (RE, Resource Element): minimum time occupies 1 number of sub-carrier on 1 OFDM symbol.
2, resource unit group (REG, Resource Element Group): according to the difference of reference symbol position on each OFDM symbol, 1 REG can be made up of 4 or 6 RE.
3, control information unit (CCE, Control Channel Element): by 36 RE, 9 REG form.The information that comprises among the CCE has: user's descending scheduling authorization message (DL grant) and uplink scheduling authorization information (UL grant); And and system message (SI; System Information), insert (RA, Random Access) response, the relevant information of paging (Paging) at random.
4, Physical Resource Block (PRB, Physical Resource Block): being continuous 1 time slot on the time-domain, is continuous 12 number of sub-carrier on the frequency domain.
5, Physical Resource Block is to (PRB pair): being continuous 1 sub-frame on the time-domain, is continuous 12 number of sub-carrier on the frequency domain.
6, the combining form of polymerization grade (Aggregation level L) expression CCE, promptly PDCCH can only be made up of L CCE, and wherein L ∈ { 1; 2,4,8}; That is to say that PDCCH can only be made up of the combination (representing with 4-CCE) of the combination (representing with 2-CCE) of the combination (representing with 1-CCE) of 1 CCE, 2 CCE, 4 CCE and the combination (representing with 8-CCE) of 8 CCE, and the respectively corresponding again 4 kinds of different coding speed of above-mentioned 4 kinds of different combinations; The code rate that is 1-CCE is 2/3; The code rate of 2-CCE is 1/3, and the code rate of 4-CCE is 1/6, and the code rate of 8-CCE is 1/12.
7, search volume (SS, Search Space): be made up of some groups of candidate's control channels, UE monitors the search volume, and in the search volume, carries out blind Detecting, so that detect and own relevant down control channel.
8, the search volume has two types: a kind of is common search space (UE-common Search Space), i.e. the search volume that all will monitor of all UE, and what carried in the common search space is and SI RA response and the relevant public information of Paging; Another kind is the special-purpose search volume (UE-specific Search Space) of UE, and what wherein carry is UE up-downgoing scheduling authorization information separately.
9, different CCE aggregation level has the number of its corresponding candidate's control channel (PDCCHcandidate), is the maximum times of blind Detecting.For example, under UE-specific Search Space: candidate's control channel of 1-CCE is 6, and the number of times that promptly carries out blind Detecting by one group of 1 CCE is no more than 6 times; The PDCCH candidate number of 2-CCE is 6, and the number of times that promptly carries out blind Detecting by one group of 2 CCE is no more than 6 times; The PDCCH candidate number of 4-CCE is 2, and the number of times that promptly carries out blind Detecting by one group of 4 CCE is no more than 2 times; The PDCCH candidate number of 8-CCE is 2, and the number of times that promptly carries out blind Detecting by one group of 8 CCE is no more than 2 times.Under the UE-common Search Space, the PDCCH candidate number of 4-CCE is 4, and the number of times that promptly carries out blind Detecting by one group of 4 CCE is no more than 4 times; The PDCCH candidate number of 8-CCE is 2, and the number of times that promptly carries out blind Detecting by one group of 8 CCE is no more than 2 times.
Fig. 1 is the existing Organization Chart of introducing the GSM of RN, and as shown in Figure 1, the link between base station in this GSM (eNB) and the RN is called repeated link (BL; Backhaul Link is also referred to as Un Link), the user terminal (UE under RN and its coverage; User Equipment) link between is called access link (AL, Access Link are also referred to as Uu Link); Link between the UE under eNB and its coverage link (DL, Direct Link) that is referred to as to direct transfer.Concerning eNB, RN just is equivalent to a UE; Concerning UE, RN just is equivalent to eNB.
At present, in adopting band during relaying (inband relay) mode, i.e. Un Link and the identical frequency band of Uu Link use are for fear of the transmitting-receiving interference of RN self, the operation that RN can not send simultaneously and receive on same frequency resource.Fig. 2 is the frame structure sketch map of existing backhaul subframe, when RN sends Downlink Control Information for its subordinate UE, is what can not receive from the Downlink Control Information of eNB.Therefore; When downlink transfer, RN sends Downlink Control Information at first on preceding 1 or 2 OFDM symbol, for its subordinate's UE, and (the interval gap shown in figure) carries out from being transmitted into the switching of reception in a period of time scope then; After switching completion; On the OFDM symbol of back, receive data, comprising down control channel (R-PDCCH, Relay Physical Downlink Control Channel) and Physical Downlink Shared Channel (R-PDSCH from eNB; Relay Physical Downlink Shared Channel); As shown in Figure 2, promptly eNB is to be carried on the Physical Resource Block (PRB, Physical Resource Block) to the down control channel that RN sends.
On descending backhaul subframe, eNB disposes the transmission that one group of Resource Block (RB) is used for R-PDCCH through high level semi-staticly, comprising descending scheduling mandate (DL grant) and the uplink scheduling authorization information such as (UL grant) of RN.Fig. 3 concerns sketch map for the position of existing R-PDCCH and PDCCH; As shown in Figure 3; Under the normal CP; The PDCCH of UE transmits on the individual OFDM symbol of the preceding n (n≤3) of the 1st time slot, and DL grant is the 4th an OFDM symbol in the original position of the 1st time slot only, and end position is transmitting on totally 4 OFDM symbols of the 7th OFDM symbol; UL grant only transmits on all available OFDM symbols of the 2nd time slot.
At present; How to confirm the R-PDCCH search volume; It in the discussion of 3GPP a hot issue; The method of existing definite R-PDCCH search volume roughly is: DL grant and UL grant have independently R-PDCCH Search space, and the original position in different aggregation level L corresponding search space is all identical, and the one group of Resource Block that is semi-static distribution is to the 1st RB pair in (RB pair).But; According to present design; If the situation of the RB pair of all semi-static reservations all since the 1st RB, probably appears not covering in the original position of the search volume of all aggregation level, thereby caused the reduction of blind Detecting efficient.Based on this, the method for designing of a kind of R-PDCCH search volume that the present invention proposes can address this problem well.
Summary of the invention
In view of this, main purpose of the present invention is to provide the method and system of a kind of definite down control channel search volume, can guarantee in blind Detecting, to cover as far as possible the RB pair of all semi-static reservations, thereby improves blind Detecting efficient.
For achieving the above object, technical scheme of the present invention is achieved in that
The method of a kind of definite down control channel R-PDCCH search volume SS may further comprise the steps:
The base station is that the original position of the pairing search volume of polymerization grade aggregation level L of every kind of control information unit is provided with side-play amount respectively;
Via node RN confirms every kind of pairing search volume of aggregation level L according to the offset value that sets when blind Detecting R-PDCCH.
Before the said RN blind Detecting R-PDCCH, this method also comprises:
Said RN need to judge whether the offset value according to setting to confirm every kind of pairing search volume of aggregation level L, if, continue to carry out the step that side-play amount is set, perhaps confirm the step of search volume; Otherwise process ends is confirmed said every kind of pairing search volume of aggregation level L according to existing method.
This method also comprises: whether said base station indication RN need confirm every kind of pairing search volume of aggregation level L according to the offset value that sets when blind Detecting R-PDCCH.
This method also comprises: said base station utilizes high-level signaling that the said offset value that sets is informed RN.
The said side-play amount that is provided with comprises:
Said base station is provided with the special-purpose offset value of RN for the different RN of its covering; Perhaps, all RN for its covering are provided with unified identical offset value; Perhaps, the RN of its covering is divided into groups, the identical offset value of unification separately is set respectively for each group.
The said side-play amount that is provided with comprises:
Be a RN under the covering of said base station; Perhaps one or more RN, perhaps the original position of every kind of all RN pairing search volume of aggregation level L is provided with side-play amount respectively; And the pairing offset value of all aggregation level L is all identical.
The said side-play amount that is provided with comprises:
Be a RN under the covering of said base station; Perhaps one or more RN, perhaps the original position of every kind of all RN pairing search volume of aggregation level L is provided with side-play amount respectively; And the pairing offset value of different aggregation level L is all inequality.
The said side-play amount that is provided with comprises:
Be a RN under the covering of said base station; Perhaps one or more RN; Perhaps the original position of every kind of all RN pairing search volume of aggregation level L is provided with side-play amount respectively, wherein; The pairing offset value of one or more aggregation level L is identical, and the pairing offset value of remaining aggregation level L is different.
Make an appointment between said base station and the RN offset value of said setting.
The said side-play amount that is provided with comprises:
Said aggregation level L and offset value are bound, and said base station and RN agreement: during L=1, offset=a; During L=2, offset=b; During L=4, offset=c; During L=8, offset=d, wherein, the value of a, b, c, d is positive integer.
The said side-play amount that is provided with comprises:
Value N with candidate R-PDCCH number
R-PDCCH candidateBind with said aggregation level L and side-play amount, and said base station and RN agreement:
Work as L=1, N
R-PDCCH candidate=6 o'clock, offset=a1; Work as L=1, N
R-PDCCH candidate=8 o'clock, offset=a2; Work as L=1, N
R-PDCCH candidate=12 o'clock, offset=a3; Work as L=1, N
R-PDCCH candidate=16 o'clock, offset=a4;
Work as L=2, N
R-PDCCH candidate=4 o'clock, offset=b1; Work as L=2, N
R-PDCCH candidate=6 o'clock, offset=b2; Work as L=2, N
R-PDCCH candidate=8 o'clock, offset=b3;
Work as L=4, N
R-PDCCH candidate=2 o'clock, offset=c1; Work as L=4, N
R-PDCCH candidate=3 o'clock, offset=c2; Work as L=4, N
R-PDCCH candidate=4 o'clock, offset=c3;
Work as L=8, N
R-PDCCH candidate=1 o'clock, offset=d1; Work as L=8, N
RP-DCCH candidate=2 o'clock, offset=d2;
Wherein, the value of a1～a3, b1～b3, c1～c3, d1～d3 is positive integer;
N
R-PDCCH candidate* L≤N
RB, N
RBExpression is used to carry the RB sum of R-PDCCH.
The system of a kind of definite down control channel search volume comprises base station and RN at least, wherein,
The base station, the original position that is used to every kind of pairing search volume of aggregation level L is provided with side-play amount respectively.
RN is used for when blind Detecting R-PDCCH, confirms every kind of pairing search volume of aggregation level L according to the offset value that sets.
Said base station also is used to utilize high-level signaling that the offset value that sets is informed RN; Perhaps,
Said base station, also be used for and RN between the offset value is set through making an appointment.
Said base station also is used for confirming to the RN transmission offset value whether basis sets the indication of every kind of pairing search volume of aggregation level L; Correspondingly,
Said RN also is used for according to the indication from the base station, need to determine whether the offset value according to setting to confirm every kind of pairing search volume of aggregation level L.
Can find out from the technical scheme that the invention described above provides; Comprise that the base station is that the original position of every kind of pairing search volume of aggregation level L is provided with side-play amount (offset) respectively; RN confirms every kind of pairing search volume of aggregation level L according to the offset value that sets when blind Detecting R-PDCCH.In the communication system of introducing relaying technique, provide a kind of via node how to search for the method for the down control channel that belongs to self through the inventive method.Be applicable to via node well, guaranteed that via node has lower complexity when the blind Detecting down control channel, and covered all RB that reserved as much as possible, thereby improved whole system efficient.
Description of drawings
Fig. 1 is the existing Organization Chart of introducing the GSM of RN;
Fig. 2 is the frame structure sketch map of existing backhaul subframe;
Fig. 3 concerns sketch map for the position of existing R-PDCCH and PDCCH;
Fig. 4 confirms the flow chart of the method for down control channel search volume for the present invention;
Fig. 5 confirms the composition structural representation of the system of down control channel search volume for the present invention;
Fig. 6 confirms the sketch map of first embodiment of the method for down control channel search volume for the present invention;
Fig. 7 confirms the sketch map of the 3rd embodiment of the method for down control channel search volume for the present invention;
Fig. 8 confirms the sketch map of the 4th embodiment of the method for down control channel search volume for the present invention;
Fig. 9 confirms the sketch map of the 5th embodiment of the method for down control channel search volume for the present invention.
Embodiment
Fig. 4 confirms the flow chart of the method for down control channel search volume for the present invention, and is as shown in Figure 4, may further comprise the steps:
Step 400: the base station is that the original position of every kind of pairing search volume of aggregation level L is provided with side-play amount (offset) respectively.Wherein, the original position of the pairing search volume of aggregation level L is that the base station is the 1st RB pair among one group of RB pair of the semi-static distribution of RN.
Further, the base station can utilize high-level signaling that the offset value that sets is informed RN; Perhaps, between base station and RN, make an appointment the offset value is set.Wherein,
Utilize high-level signaling that the offset value that sets is informed under the situation of RN in the base station, the base station can be provided with special-purpose (RN-specific) offset value of RN for the different RN of its covering; Also unified offset value (identical offset value) can be set for all RN of its covering; Can also RN be divided into groups, for each group is provided with unified offset value (identical offset value) separately respectively.Particularly,
The method that side-play amount is set is: for the base station cover certain 1 RN down or certain several RN perhaps the original position of every kind of pairing search volume of aggregation level L of all RN a side-play amount is set respectively; And the pairing offset value of all aggregation level L is all identical.Perhaps,
The method that side-play amount is set is: for the base station cover certain 1 RN down or certain several RN perhaps the original position of every kind of pairing search volume of aggregation level L of all RN a side-play amount is set respectively; And the pairing offset value of different aggregation level L is all inequality.Perhaps,
The method that side-play amount is set is: for the base station cover certain 1 RN down or certain several RN perhaps the original position of every kind of pairing search volume of aggregation level L of all RN a side-play amount is set respectively; Wherein, The pairing offset value of some aggregation level L is identical, and the pairing offset value of some aggregation level L is different.Need to prove; The base station can confirm that with the combined factors such as sum of one group of RB pair of channel conditions and semi-static reservation between each RN of its subordinate the pairing offset value of which aggregation level L is identical according to self, and the pairing offset value of which aggregation level L is different.The concrete easy to those skilled in the art realization of implementation method how to confirm, and relatively flexibly, here and be not used in qualification protection scope of the present invention.
Under the situation of the offset value of the said setting of making an appointment between base station and the RN,
The method that side-play amount is set is: aggregation level L and offset value are bound, and base station and RN appoints, and during L=1, offset=a; During L=2, offset=b; During L=4, offset=c; During L=8, offset=d, wherein the value of a, b, c, d is positive integer.Perhaps,
The method that side-play amount is set is: with the value N of candidate R-PDCCH (R-PDCCH candidate) number
R-PDCCH candidateBind with aggregation level L and offset, and base station and RN appoint, as shown in table 1.Particularly:
Work as L=1, N
R-PDCCH candidate=6 o'clock, offset=a1; Work as L=1, N
R-PDCCH candidate=8 o'clock, offset=a2; Work as L=1, N
R-PDCCH candidate=12 o'clock, offset=a3; Work as L=1, N
R-PDCCH candidate=16 o'clock, offset=a4;
Work as L=2, N
R-PDCCH candidate=4 o'clock, offset=b1; Work as L=2, N
R-PDCCH candidate=6 o'clock, offset=b2; Work as L=2, N
R-PDCCH candidate=8 o'clock, offset=b3;
Work as L=4, N
R-PDCCH candidate=2 o'clock, offset=c1; Work as L=4, N
R-PDCCH candidate=3 o'clock, offset=c2; Work as L=4, N
R-PDCCH candidate=4 o'clock, offset=c3;
Work as L=8, N
R-PDCCH candidate=1 o'clock, offset=d1; Work as L=8, N
R-PDCCH candidate=2 o'clock, offset=d2.
Wherein, the value of a1～a3, b1～b3, c1～c3, d1～d3 is positive integer.
Table 1
In the table 1, " * " symbolic representation does not have this configuration, and promptly during L=1, R-PDCCH candidate can not get 1,2,3 and 4; Other is so analogized.
In the table 1, the value N of R-PDCCH candidate number
R-PDCCH candidateReceiving the base station is the RB sum N that is used to carry R-PDCCH of the semi-static configuration of RN
RBConstraint, promptly need satisfy N
R-PDCCH candidate* L≤N
RBThat is to say, if the base station is the RB sum N that is used to carry R-PDCCH of the semi-static configuration of RN
RB=10, when L=1, R-PDCCH candidate can only get 6 and 8 so; When L=2, R-PDCCH candidate can only get 4; When L=4, R-PDCCH candidate can only get 2; When L=8, R-PDCCH candidate can only get 1.
Step 401:RN confirms every kind of pairing search volume of aggregation level L according to the offset value that sets when blind Detecting R-PDCCH.
Before the step 400 or simultaneously; Perhaps after the step 400, before the step 401; The inventive method also comprises: RN judges whether that needs are according to the definite every kind of pairing search volume of aggregation level L of the offset value that sets, if continue execution in step 400 or step 401; Otherwise, finish flow process of the present invention, confirm every kind of pairing search volume of aggregation level L according to existing method.Particularly:
The base station can utilize the high-level signaling or the alternate manner of 1 extra bit; Whether indication RN need be when blind Detecting R-PDCCH; Confirm every kind of pairing search volume of aggregation level L according to the offset value that sets, abbreviate as among this paper and whether need carry out the offset operation.Such as: the base station is to RN indication 0, and expression RN need not to carry out the offset operation; The base station is to RN indication 1, and expression RN need carry out the offset operation.Before the step 400 or simultaneously, perhaps after the step 400, before the step 401, the inventive method also comprises: the RN acquiescence need be carried out the offset operation all the time.
This method also comprises: use the offset value that sets, confirm the search volume of DL grant and the search volume of UL grant.
Corresponding the inventive method also provides the system of a kind of definite down control channel search volume, comprises base station and RN at least, wherein,
The base station, the original position that is used to every kind of pairing search volume of aggregation level L is provided with side-play amount (offset) respectively.
RN is used for when blind Detecting R-PDCCH, confirms every kind of pairing search volume of aggregation level L according to the offset value that sets.
Wherein, the base station also is used to utilize high-level signaling that the offset value that sets is informed RN; Perhaps and make an appointment between the RN offset value is set.
The base station also is used for sending to RN the indication of the definite every kind of pairing search volume of aggregation level L of offset value whether basis sets; Correspondingly, RN also is used for according to the indication from the base station, and determining whether needs to confirm every kind of pairing search volume of aggregation level L according to the offset value that sets.
Below in conjunction with several embodiment the inventive method is described in detail.
Fig. 6 confirms the sketch map of first embodiment of the method for down control channel search volume for the present invention; Among first embodiment; Suppose that it is the offset value that all the RN notices under it covers set that the base station utilizes high-level signaling; Wherein, the pairing offset value of different aggregation level L is identical; Suppose the base station for its cover all RN down semi-static dispose 10 RB pair, be used to carry R-PDCCH (comprising DL grant and UL grant), number and be respectively RB0, RB1 ..., RB9.Wherein, DL grant is carried on the 1st time slot of above-mentioned 10 RB pair, and UL grant is carried on the 2nd time slot of above-mentioned 10 RB pair.Above-mentioned 10 RB pair logically are continuous, but physically can be continuous, also can disperse.
The original position of every kind of pairing search volume of aggregation level L of all RN all is provided with an identical offset value for it covers down in this base station, and utilize high-level signaling semi-static notify it to cover following all RN.As shown in Figure 6, among first embodiment, L={1,2,4, the original position of the pairing search volume of 8} is with respect to the 1st RB 1 RB that all squints.
This base station covers down, and all RN confirm that in the blind check process process of search volume is following:
Begin to detect from L=1, this moment, the offset value was k=1, and promptly RN begins from the 2nd RB of L=1 group RB, detects for one group according to 1 RB; Corresponding R-PDCCH candidate control channel is 6, promptly detects altogether 6 times, and the search volume of this moment is: { RB1, RB2; RB3, RB4, RB5, RB6};
If RN does not detect the R-PDCCH that is complementary with himself RN ID, then to continue to begin to detect from L=2, this moment, the offset value was k=1, promptly RN begins from the 2nd RB of L=2 group RB; Detect for one group according to 2 RB, corresponding R-PDCCH candidate control channel is 4, promptly detects altogether 4 times, and the search volume of this moment is: { { RB1; RB2}, { RB3, RB4}, { RB5; RB6}, { RB7, RB8}};
If RN does not still detect the R-PDCCH that is complementary with himself RN ID, then to continue to begin to detect from L=4, this moment, the offset value was k=1, promptly RN begins from the 2nd RB of L=4 group RB; Detect for one group according to 4 RB, corresponding R-PDCCH candidate control channel is 2, promptly detects altogether 2 times, and the search volume of this moment is: { { RB1; RB2, RB3, RB4}, { RB5; RB6, RB7, RB8}};
If RN does not detect the DL grant that is complementary with himself RN ID yet, then to continue to begin to detect from L=8, this moment, the offset value was k=1, promptly RN begins from the 1st RB of L=8 group RB; Detect for one group according to 8 RB, corresponding R-PDCCH candidate control channel is 1, promptly detects altogether 1 time, and the search volume of this moment is: { RB1; RB2, RB3, RB4, RB5; RB6, RB7, RB8}.
In the testing process of any RB combining form in first embodiment, if detect corresponding R-PDCCH when (comprising DL grant or UL grant), then RN stops to detect.
Among first embodiment, if the base station is provided with special-purpose (RN-specific) offset value of RN respectively for each RN under its covering, and the pairing offset value of different aggregation level L is identical.By way of example, such as:
It is 1 that the base station utilizes the offset value of high-level signaling notice RN1, and then RN1 is when blind Detecting, and the original position of different aggregation level L is with respect to the 1st RB 1 RB that squinted, promptly since the 2nd RB blind check; It is 2 that the base station utilizes the offset value of high-level signaling notice RN2, and promptly RN2 is when blind Detecting, and the original position of different aggregation level L is with respect to the 1st RB 2 RB that squinted, promptly since the 3rd RB blind check; The rest may be inferred, no longer repeats here.
Perhaps, if the base station is provided with the offset value respectively for the RN group under its covering, and the pairing offset value of different aggregation level L is identical.By way of example, such as:
The base station utilizes high-level signaling notice RN1, and the offset value of RN2 and RN3 is 2, i.e. RN1, RN2 and RN3 are when blind Detecting, and the original position of different aggregation level L is with respect to the 1st RB 2 RB that squinted, promptly since the 3rd RB blind check; It is 4 that the base station utilizes the offset value of high-level signaling notice RN4 and RN5, and promptly RN4 and RN5 are when blind Detecting, and the original position of different aggregation level L is with respect to the 1st RB 4 RB that squinted, promptly since the 5th RB blind check; The rest may be inferred, no longer repeats here.
Fig. 7 confirms the sketch map of the 3rd embodiment of the method for down control channel search volume for the present invention; Among the 3rd embodiment; Suppose the offset value that the base station sets through the high-level signaling notice, wherein, the pairing offset value of different aggregation level L is all inequality.Suppose the base station be RN semi-static in advance dispose 10 RB pair, be used to carry R-PDCCH (comprising DL grant and UL grant), numbering is respectively RB0, RB 1 ..., RB9.Wherein, DL grant is carried on the 1st time slot of said 10 RB pair, and UL grant is carried on the 2nd time slot of said 10 RB pair, and they adopt identical offset value.Above-mentioned 10 RB logically are continuous, but physically can be continuous also can dispersing.
This base station disposes different offset values for the original position of every kind of pairing search volume of aggregation level L of all RN under its covering respectively with respect to the 1st RB, and utilizes the semi-static notice RN of high-level signaling.As shown in Figure 7, among the 3rd embodiment, L={1,2,4, the original position of the pairing search volume of 8} is with respect to the 1st RB squint respectively 4 RB, 0 RB, 1 RB and 2 RB.
This base station covers down, and all RN confirm that in the blind check process process of search volume is following:
Begin to detect from L=1, this moment, the offset value was k=4, and promptly RN begins from the 5th RB of L=1 group RB, detects for one group according to 1 RB; Corresponding R-PDCCH candidate control channel is 6, promptly detects altogether 6 times, and the search volume of this moment is: { RB4, RB5; RB6, RB7, RB8, RB9};
If RN does not detect the R-PDCCH (comprising DL grant or UL grant) that is complementary with himself RN ID, then to continue to begin to detect from L=2, this moment, the offset value was k=0, promptly RN begins to detect for one group by 2 RB from the 1st RB of L=2 group RB; Corresponding R-PDCCH candidate control channel is 4, promptly detects altogether 4 times, and the search volume of this moment is: { { RB0, RB1}; { RB2, RB3}, { RB4; RB5}, { RB6, RB7}};
If RN does not detect the R-PDCCH (comprising DL grant or UL grant) that is complementary with himself RN ID yet, then to continue to begin to detect from L=4, this moment, the offset value was k=1, promptly RN begins from the 2nd RB of L=4 group RB; Detect for one group according to 4 RB, corresponding R-PDCCH candidate control channel is 2, promptly detects altogether 2 times, and the search volume of this moment is: { { RB1; RB2, RB3, RB4}, { RB5; RB6, RB7, RB8}};
If RN does not detect the R-PDCCH (comprising DL grant or UL grant) that is complementary with himself RN ID yet, then to continue to begin to detect from L=8, this moment, the offset value was k=2, promptly RN begins from the 3rd RB of L=8 group RB; Detect for one group according to 8 RB, corresponding R-PDCCH candidate control channel is 1, promptly detects altogether 1 time, and the search volume size of this moment is: { RB2; RB3, RB4, RB5, RB6; RB7, RB8, RB9}.
In the testing process of any RB combining form in the 3rd embodiment, if detect corresponding R-PDCCH when (comprising DL grant or UL grant), then RN stops to detect.
Among the 3rd embodiment, if the base station is provided with the offest value of RN-specific respectively for its each RN under covering, and the pairing offset value of different aggregation level L is all inequality.By way of example, such as:
The base station utilizes high-level signaling notice RN1, L={1, and 2,4, the original position of the pairing search volume of 8} is with respect to the 1st RB 4,0,1 and 2 RB that squints respectively.RN1 is when blind Detecting, and the offset value of indicating according to the base station detects; The base station utilizes high-level signaling notice RN2, L={1, and 2,4, the original position of the pairing search volume of 8} is with respect to the 1st RB 2,0,3 and 1 RB that squint respectively.During the RN2 blind Detecting, the offset value of indicating according to the base station detects; The rest may be inferred, no longer repeats here.
Perhaps, if the base station is provided with the offset value respectively for the RN group under its covering, and the pairing offset value of different aggregation level L is all inequality.By way of example, such as:
The base station utilizes high-level signaling notice RN1, RN2 and RN3, and L={1,2,4, the original position of the pairing search volume of 8} is with respect to the 1st RB squint respectively 4 RB, 0 RB, 1 RB and 2 RB.RN1, RN2 and RN3 are when blind Detecting, and the offset value of indicating according to the base station detects; The base station utilizes high-level signaling notice RN4 and RN5, L={1, and 2,4, the original position of the pairing search volume of 8} is with respect to the 1st RB 2 RB that squint respectively, 0 RB, 3 RB and 1 RB.RN4 and RN5 are when blind Detecting, and the offset value of indicating according to the base station detects; The rest may be inferred, no longer repeats here.
Fig. 8 confirms the sketch map of the 4th embodiment of the method for down control channel search volume for the present invention; Among the 4th embodiment; Suppose that the base station notifies said offset value through high-level signaling; The offset value that some aggregation level L is corresponding is identical, and the pairing offset value of some aggregation level L is different.Suppose the base station be RN semi-static in advance dispose 16 RB pair, be used to carry R-PDCCH (comprising DLgrant and UL grant), numbering is respectively RB0, RB1 ..., RB 15.Wherein, DL grant is carried on the 1st time slot of above-mentioned 16 RB pair; UL grant is carried on the 2nd time slot of above-mentioned 16 RB pair; And the offset value that some aggregation level L is disposed is identical, and the offset value that some aggregation level L is disposed is different.Above-mentioned 16 RB logically are continuous, but physically can be continuous, also can disperse.
This base station disposes identical or different offset value for the original position of every kind of pairing search volume of aggregation level L of certain 1 RN under its covering respectively with respect to the 1st RB, and utilizes the semi-static notice RN of high-level signaling.As shown in Figure 8, among the 4th embodiment, L={1,2,4, the original position of the pairing search volume of 8} is with respect to the 1st RB 2 RB that squint respectively, 4 RB, 0 RB and 0 RB.
This base station covers down, and all RN confirm that in the blind check process process of search volume is following:
Begin to detect from L=1, this moment, the offset value was k=2, and promptly RN begins from the 3rd RB of L=1 group RB, detects for one group according to 1 RB, and corresponding R-PDCCH candidate control channel is 12; Promptly detect altogether 12 times, the search volume of this moment is: { RB2, RB3, RB4, RB5; RB6, RB7, RB8, RB9; RB10, RB11, RB12, RB13};
If RN does not detect the R-PDCCH (comprising DL grant or UL grant) that is complementary with himself RN ID, then to continue to begin to detect from L=2, this moment, the offset value was k=4, promptly RN begins from the 5th RB of L=2 group RB, detects for one group according to 2 RB; Corresponding R-PDCCH candidate control channel is 6, promptly detects altogether 6 times, and the search volume of this moment is: { { RB4, RB5}, { RB6; RB7}, { { RB 10, RB 11} for RB8, RB9}; RB 12, and RB 13}, { RB 14, RB 15}};
If RN does not detect the R-PDCCH (comprising DL grant or UL grant) that is complementary with himself RN ID yet, then to continue to begin to detect from L=4, this moment, the offset value was k=0, promptly RN begins from the 1st RB of L=4 group RB, detects for one group according to 4 RB; Corresponding R-PDCCH candidate control channel is 4, promptly detects altogether 4 times, and the search volume of this moment is: { { RB0, RB1, RB2; RB3}, { RB4, RB5, RB6, RB7}; { RB8, RB9, RB10, RB11}; { RB12, RB13, RB14, RB15}};
If RN does not detect the R-PDCCH (comprising DL grant or UL grant) that is complementary with himself RN ID yet, then to continue to begin to detect from L=8, this moment, the offset value was k=0, promptly RN begins from the 1st RB of L=8 group RB, detects for one group according to 8 RB; Corresponding R-PDCCH candidate control channel is 2, promptly detects altogether 2 times, and the search volume size of this moment is: { { RB0, RB1, RB2; RB3, RB4, RB5, RB6, RB7}; { RB8, RB9, RB10, RB11; RB12, RB13, RB14, RB15}}.
In the testing process of any RB combining form in the 4th embodiment, detect corresponding R-PDCCH when (comprising DL grant or UL grant), then RN stops to detect.
Fig. 9 confirms the sketch map of the 5th embodiment of the method for down control channel search volume for the present invention; Among the 5th embodiment; Suppose aggregation level L and offset value are bound, the base station need not the notice offset value of utilizing high-level signaling semi-static.Suppose the base station be RN semi-static in advance dispose 12 RBpair, be used to carry R-PDCCH (comprising DL grant and UL grant), be numbered RB0, RB1 ..., RB 11.Wherein, DL grant is carried on the 1st time slot of above-mentioned 12 RB pair, and UL grant is carried on the 2nd time slot of above-mentioned 12 RB pair, and above-mentioned 12 RB logically are continuous, but physically can be continuous, also can disperse.
This base station and RN arrange in advance, and aggregation level L and offset value are bound, and be as shown in Figure 9: during L=1, and offset value k=6; During L=2, offset value k=0; During L=4, offset value k=4; During L=8, offset value k=0.
This base station covers down, and all RN confirm that in the blind check process process of search volume is following:
Begin to detect from L=1, this moment, RN knew that the offset value is 6, and promptly RN begins from the 7th RB of L=1 group RB, detects for one group according to 1 RB; Corresponding R-PDCCH candidate control channel is 6, promptly detects altogether 6 times, and the search volume of this moment is: { RB6, RB7; RB8, RB9, RB10, RB11};
If RN does not detect the R-PDCCH (comprising DL grant or UL grant) that is complementary with himself RN ID, then to continue to begin to detect from L=2, this moment, the offset value was 0, promptly RN begins from the 1st RB of L=2 group RB; Detect for one group according to 2 RB, corresponding R-PDCCH candidate control channel is 4, promptly detects altogether 4 times, and the search volume of this moment is: { { RB0; RB1}, { RB2, RB3}, { RB4; RB5}, { RB6, RB7}};
If RN does not detect the R-PDCCH (comprising DL grant or UL grant) that is complementary with himself RN ID yet, then to continue to begin to detect from L=4, this moment, the offset value was 4, promptly RN begins from the 5th RB of L=4 group RB; Detect for one group according to 4 RB, corresponding R-PDCCH candidate control channel is 2, promptly detects altogether 2 times, and the search volume of this moment is: { { RB4; RB5, RB6, RB7}, { RB8; RB9, RB10, RB11}};
If RN does not detect the R-PDCCH (comprising DL grant or UL grant) that is complementary with himself RN ID yet, then to continue to begin to detect from L=8, this moment, the offset value was 0, promptly RN begins from the 1st RB of L=8 group RB; Detect for one group according to 8 RB, corresponding R-PDCCH candidate control channel is 1, promptly detects altogether 1 time, and the search volume size of this moment is: { { RB0; RB1, RB2, RB3, RB4; RB5, RB6, RB7}}.
In the testing process of any RB combining form in the 5th embodiment, detect corresponding R-PDCCH when (comprising DL grant or UL grant), then RN stops to detect.
Special, among the 5th embodiment, can also arrange the offset value that each RN is provided with RN-specific between base station and the RN; Perhaps arrange all RN identical offset value is set; The offset value of perhaps arranging some RN is identical, and the offset value of some RN is not equal, and concrete realization is repeated no more here.
The 6th embodiment binds R-PDCCH candidate and aggregation level L and offset value, and base station and RN agreement need not the notice of utilizing high-level signaling semi-static.Among the 6th embodiment, suppose the base station be RN semi-static in advance dispose 15 RB pair, be used to carry R-PDCCH (comprising DL grant and UL grant), numbering is respectively RB0, RB 1 ..., RB 14.Wherein, DL grant is carried on the 1st time slot of above-mentioned 15 RB pair, and UL grant is carried on the 2nd time slot of above-mentioned 15 RB pair.Above-mentioned 15 RB logically are continuous, but physically can be continuous, also can disperse.
Such as: base station and RN arrange in advance, and R-PDCCH candidate and aggregation levelL and offset value are bound, and concrete offset value is as shown in table 2.Wherein, the value N of R-PDCCH candidate
R-PDCCH candidateReceiving the base station is the RB sum N that is used to carry R-PDCCH of the semi-static configuration of RN
RBConstraint, i.e. N
R-PDCCH candidate* L≤15.Therefore, when L=1, R-PDCCH candidate can only get 6,8 and 12; When L=2, R-PDCCH candidate can only get 4 and 6; When L=4, R-PDCCH candidate can only get 2 and 3; When L=8, R-PDCCH candidate can only get 1.Concrete this base station covers the process of all RN definite search volume in the blind check process down, repeats no more here.
Table 2
For another example: the base station be RN semi-static in advance dispose 8 RB pair, be used to carry R-PDCCH (comprising DL grant and UL grant), numbering is respectively RB0, RB1 ..., RB7.Base station and RN arrange in advance, and R-PDCCH candidate and aggregation level L and offset value are bound, and concrete offset value is as shown in table 3.Wherein, the value N of R-PDCCH candidate
R-PDCCH candidateReceiving the base station is the RB sum N that is used to carry R-PDCCH of the semi-static configuration of RN
RBConstraint, i.e. N
R-PDCCH candidate* L≤8.Therefore, when L=1, R-PDCCH candidate can only get 6 and 8; When L=2, R-PDCCH candidate can only get 4; When L=4, R-PDCCH candidate can only get 2; When L=8, R-PDCCH candidate can only get 1.Concrete this base station covers the process of all RN definite search volume in the blind check process down, repeats no more here.
Table 3
The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (14)
1. the method for a definite down control channel R-PDCCH search volume SS is characterized in that, may further comprise the steps:
The base station is that the original position of the pairing search volume of polymerization grade aggregation level L of every kind of control information unit is provided with side-play amount respectively;
Via node RN confirms every kind of pairing search volume of aggregation level L according to the offset value that sets when blind Detecting R-PDCCH.
2. method according to claim 1 is characterized in that, before the said RN blind Detecting R-PDCCH, this method also comprises:
Said RN need to judge whether the offset value according to setting to confirm every kind of pairing search volume of aggregation level L, if, continue to carry out the step that side-play amount is set, perhaps confirm the step of search volume; Otherwise process ends is confirmed said every kind of pairing search volume of aggregation level L according to existing method.
3. method according to claim 2 is characterized in that, this method also comprises: whether said base station indication RN need confirm every kind of pairing search volume of aggregation level L according to the offset value that sets when blind Detecting R-PDCCH.
4. method according to claim 1 and 2 is characterized in that, this method also comprises: said base station utilizes high-level signaling that the said offset value that sets is informed RN.
5. method according to claim 4 is characterized in that, the said side-play amount that is provided with comprises:
Said base station is provided with the special-purpose offset value of RN for the different RN of its covering; Perhaps, all RN for its covering are provided with unified identical offset value; Perhaps, the RN of its covering is divided into groups, the identical offset value of unification separately is set respectively for each group.
6. method according to claim 4 is characterized in that, the said side-play amount that is provided with comprises:
Be a RN under the covering of said base station; Perhaps one or more RN, perhaps the original position of every kind of all RN pairing search volume of aggregation level L is provided with side-play amount respectively; And the pairing offset value of all aggregation level L is all identical.
7. method according to claim 4 is characterized in that, the said side-play amount that is provided with comprises:
Be a RN under the covering of said base station; Perhaps one or more RN, perhaps the original position of every kind of all RN pairing search volume of aggregation level L is provided with side-play amount respectively; And the pairing offset value of different aggregation level L is all inequality.
8. method according to claim 4 is characterized in that, the said side-play amount that is provided with comprises:
Be a RN under the covering of said base station; Perhaps one or more RN; Perhaps the original position of every kind of all RN pairing search volume of aggregation level L is provided with side-play amount respectively, wherein; The pairing offset value of one or more aggregation level L is identical, and the pairing offset value of remaining aggregation level L is different.
9. method according to claim 1 and 2 is characterized in that, the offset value of the said setting of making an appointment between said base station and the RN.
10. method according to claim 9 is characterized in that, the said side-play amount that is provided with comprises:
Said aggregation level L and offset value are bound, and said base station and RN agreement: during L=1, offset=a; During L=2, offset=b; During L=4, offset=c; During L=8, offset=d, wherein, the value of a, b, c, d is positive integer.
11. method according to claim 9 is characterized in that, the said side-play amount that is provided with comprises:
Value N with candidate R-PDCCH number
R-PDCCH candidateBind with said aggregation level L and side-play amount, and said base station and RN agreement:
Work as L=1, N
R-PDCCH candidate=6 o'clock, offset=a1; Work as L=1, N
R-PDCCH candidate=8 o'clock, offset=a2; Work as L=1, N
R-PDCCH candidate=12 o'clock, offset=a3; Work as L=1, N
R-PDCCH candidate=16 o'clock, offset=a4;
Work as L=2, N
R-PDCCH candidate=4 o'clock, offset=b1; Work as L=2, N
R-PDCCH candidate=6 o'clock, offset=b2; Work as L=2, N
R-PDCCH candidate=8 o'clock, offset=b3;
Work as L=4, N
R-PDCCH candidate=2 o'clock, offset=c1; Work as L=4, N
R-PDCCH candidate=3 o'clock, offset=c2; Work as L=4, N
R-PDCCH candidate=4 o'clock, offset=c3;
Work as L=8, N
R-PDCCH candidate=1 o'clock, offset=d1; Work as L=8, N
R-PDCCH candidate=2 o'clock, offset=d2;
Wherein, the value of a1～a3, b1～b3, c1～c3, d1～d3 is positive integer;
N
R-PDCCH candidate* L≤N
RB, N
RBExpression is used to carry the RB sum of R-PDCCH.
12. the system of definite down control channel search volume is characterized in that, comprises base station and RN at least, wherein,
The base station, the original position that is used to every kind of pairing search volume of aggregation level L is provided with side-play amount respectively.
RN is used for when blind Detecting R-PDCCH, confirms every kind of pairing search volume of aggregation level L according to the offset value that sets.
13. system according to claim 12 is characterized in that, said base station also is used to utilize high-level signaling that the offset value that sets is informed RN; Perhaps,
Said base station, also be used for and RN between the offset value is set through making an appointment.
14. according to claim 12 or 13 described systems, it is characterized in that,
Said base station also is used for confirming to the RN transmission offset value whether basis sets the indication of every kind of pairing search volume of aggregation level L; Correspondingly,
Said RN also is used for according to the indication from the base station, need to determine whether the offset value according to setting to confirm every kind of pairing search volume of aggregation level L.
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| PCT/CN2011/082170 WO2012065533A1 (en) | 2010-11-18 | 2011-11-14 | Method and system for determining relay physical downlink control channel search space |
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| WO2019105434A1 (en) * | 2017-11-30 | 2019-06-06 | 华为技术有限公司 | Resource allocation method, terminal, and base station |
| CN111566976A (en) * | 2018-01-12 | 2020-08-21 | 高通股份有限公司 | Physical Downlink Control Channel (PDCCH) monitoring with overlapping resources |
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| CN110324883B (en) * | 2018-03-28 | 2021-04-27 | 维沃移动通信有限公司 | Method for configuring physical downlink control channel, user equipment and network side equipment |
| CN110324883A (en) * | 2018-03-28 | 2019-10-11 | 维沃移动通信有限公司 | Configure method, user equipment and the network side equipment of Physical Downlink Control Channel |
| US11937250B2 (en) | 2018-03-28 | 2024-03-19 | Vivo Mobile Communication Co., Ltd. | Method for configuring physical downlink control channel, user equipment and network side device |
Also Published As
| Publication number | Publication date |
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| WO2012065533A1 (en) | 2012-05-24 |
| CN102469048B (en) | 2015-04-01 |
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