CN102468908A - Configuration method of demodulation reference signal of backhaul link control channel and equipment - Google Patents
Configuration method of demodulation reference signal of backhaul link control channel and equipment Download PDFInfo
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- CN102468908A CN102468908A CN2010105378507A CN201010537850A CN102468908A CN 102468908 A CN102468908 A CN 102468908A CN 2010105378507 A CN2010105378507 A CN 2010105378507A CN 201010537850 A CN201010537850 A CN 201010537850A CN 102468908 A CN102468908 A CN 102468908A
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Abstract
The invention discloses a configuration method of a demodulation reference signal (DMRS) of a backhaul link control channel and equipment. The method comprises: a base station side obtains DMRS configuration information of a backhaul link control channel of a relay node (RN); the base station side sends high-level signaling carrying the configuration information to the RN; According to the embodiment of the invention, a base station side obtains DMRS configuration information of a backhaul link control channel of an RN; the configuration information is sent the RN by high-level signaling; and the RN configures a DMRS to the backhaul link control channel according to the configuration information; therefore, DMOSs of backhaul link control channels of different RNs can be selectively configured; and thus, a mutual interference of physical downlink control channels (R-PDCCH) can be avoided, wherein the mutual interference is caused by same DMOS configuration of the adjacent RNs.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method and apparatus that disposes the demodulation pilot frequency of return link control channel.
Background technology
The network configuration of LTE-A system is as shown in Figure 1, comprises eNB (evolved Node B, evolved base station), RN (Relay Node, via node) and UE (User Equipment, user terminal).Wherein, eNB links CN (Core Network, core net) through wireline interface, and RN links eNB through wave point, and UE links RN or eNB through wave point.Comprising the back haul link (comprise uplink and downlink link) of following several kinds of Linktypes: RN to eNB, RN is to the access link (comprising the uplink and downlink link) of UE.
In present back haul link; ENB sends to R-PDCCH (the Physical Downlink Control Channel of RN; Physical Downlink Control Channel) can use DMRS (Demodulation Reference Signal; Demodulation pilot frequency) demodulation, the DMRS pattern that specifically can use is as shown in Figure 2.Wherein, according to timing mode 1 and timing mode 3, two kinds of possible pilot tone situation among Fig. 2, and these two kinds of pilot tone situation are all supported the transfer of data of multiport.Wherein, in conjunction with SCID (Scrambling ID, scramble sequence number), port 7 and port 8 can be supported the transfer of data of single port.
Because the R-PDCCH channel is only supported the transfer of data of single current, separate timing at the concrete DMRS that uses so, how to dispose the demodulation pilot frequency of R-PDCCH, promptly how configured port and SCID just become a problem.The solution of available technology adopting is fixing some ports and some SCID; This method is fairly simple for using; But when identical back haul link sub-frame configuration is used in two adjacent sub-districts, can there be the serious interference of R-PDCCH between its adjacent RN.Collocation method based on the demodulation pilot frequency that has the via node control channel now can't address this problem.
Summary of the invention
The embodiment of the invention provides a kind of method and apparatus that disposes the demodulation pilot frequency of return link control channel; By the demodulation pilot frequency of base station side configuration return link control channel, thereby can avoid between the adjacent R N because the identical R-PDCCH phase mutual interference that causes of configuration of demodulation pilot frequency.
The embodiment of the invention provides a kind of method that disposes the demodulation pilot frequency of return link control channel, comprising:
Base station side is obtained the configuration information of demodulation pilot frequency of the return link control channel of via node;
Said base station side is sent the high-level signaling that carries said configuration information to said via node.
The embodiment of the invention provides a kind of method that disposes the demodulation pilot frequency of return link control channel, comprising:
Via node receives the configuration information of the demodulation pilot frequency of return link control channel;
Said via node uses the demodulation pilot frequency demodulation return link control channel of configuration according to said configuration information configuration demodulation pilot frequency.
The embodiment of the invention provides a kind of base station equipment, comprising:
Acquiring unit is used to obtain the configuration information of demodulation pilot frequency of the return link control channel of via node;
Transmitting element is used for sending the high-level signaling that carries said configuration information to said via node.
The embodiment of the invention provides a kind of trunking, comprising:
Receiving element is used to receive the configuration information of the demodulation pilot frequency of return link control channel;
Dispensing unit is used for according to said configuration information configuration demodulation pilot frequency;
Demodulating unit is used to the demodulation pilot frequency demodulation return link control channel that uses said dispensing unit to dispose.
Compared with prior art, the embodiment of the invention has the following advantages at least:
Base station side is obtained the configuration information of demodulation pilot frequency of the return link control channel of via node; Send this configuration information through high-level signaling to via node; Via node is according to the demodulation pilot frequency of this configuration information configuration return link control channel; Thereby can selectively dispose the demodulation pilot frequency of the return link control channel of different via nodes, avoid between the adjacent R N because the identical R-PDCCH phase mutual interference that causes of configuration of demodulation pilot frequency.
Description of drawings
In order to be illustrated more clearly in embodiments of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiments of the invention or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic network structure of LTE-A system in the prior art;
Fig. 2 is the sketch map of DMRS pattern in the prior art;
Fig. 3 is the schematic flow sheet of method of the demodulation pilot frequency of the configuration return link control channel that provides of the embodiment of the invention one;
Fig. 4 is the schematic flow sheet of method of the demodulation pilot frequency of the configuration return link control channel that provides of the embodiment of the invention two;
Fig. 5 is the schematic flow sheet of method of the demodulation pilot frequency of the configuration return link control channel that provides of the embodiment of the invention three;
Fig. 6 is the schematic flow sheet of method of the demodulation pilot frequency of the configuration return link control channel that provides of the embodiment of the invention four;
Fig. 7 is the structural representation of the base station equipment that provides of the embodiment of the invention five;
Fig. 8 is the structural representation of the trunking that provides of the embodiment of the invention six.
Embodiment
To combine the accompanying drawing in the embodiments of the invention below, the technical scheme in the embodiments of the invention is carried out clear, intactly description, obviously, the embodiments described below only are the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of embodiments of the invention protection.
Embodiment one
The embodiment of the invention one provides a kind of method that disposes the demodulation pilot frequency of return link control channel, and is as shown in Figure 3, may further comprise the steps:
Said base station side is sent the high-level signaling that carries said configuration information to said via node and is comprised: the high-level signaling that sends the port numbers of carrying demodulation pilot frequency to said via node; Perhaps send the high-level signaling of the scramble sequence number of carrying demodulation pilot frequency, perhaps send the high-level signaling of the port numbers of carrying demodulation pilot frequency simultaneously and scramble sequence number to said via node.Via node receives the configuration information of the demodulation pilot frequency of the return link control channel that base station side sends, according to the configuration information that wherein carries (port numbers of demodulation pilot frequency and/or scramble sequence number) configuration demodulation pilot frequency.
When port numbers of carrying demodulation pilot frequency in the high-level signaling and scramble sequence, the configuration information of the demodulation pilot frequency of the return link control channel of the via node that said base station side is obtained comprises: the port numbers of the demodulation pilot frequency of the return link control channel of adjacent via node and/or scramble sequence difference; Perhaps, the port numbers of the demodulation pilot frequency of the return link control channel of the via node in the same cells and scramble sequence are number identical, the port numbers and/or the scramble sequence difference of the demodulation pilot frequency of the return link control channel of the via node that different districts is interior; Perhaps, for the identical via node of running time-frequency resource of return link control channel in the same sub-district, the port numbers of the demodulation pilot frequency of the return link control channel of this via node and/or scramble sequence number mutual difference.
Said base station side is sent the high-level signaling that carries said configuration information to said via node and can also be comprised: said base station side is sent the high-level signaling of the configuration identifier that carries demodulation pilot frequency to said via node.Via node receives the high-level signaling of the configuration identifier that carries demodulation pilot frequency; Search configuration identifier and the corresponding relation of configuration information of the demodulation pilot frequency of storage according to the configuration identifier of said demodulation pilot frequency, obtain the configuration information corresponding with the configuration identifier of said demodulation pilot frequency.
Embodiment two
The embodiment of the invention two provides a kind of method that disposes the demodulation pilot frequency of return link control channel, and is as shown in Figure 4, may further comprise the steps:
Step 401, base station side are obtained the configuration information of demodulation pilot frequency of the return link control channel of via node.
Concrete, this configuration information is specially the configuration information of port numbers and/or scramble sequence number of the demodulation pilot frequency of return link control channel.Below be that port numbers and the scramble sequence of demodulation pilot frequency number is that example is introduced all with this configuration information.Because the DMRS port is 7 or 8, SCID is 0 or 1, so configuration information has following 4 kinds of situation: { port 7, SCID=0}{ port 7, SCID=1}{ port 8, SCID=0}{ port 8, SCID=1}.In the embodiment of the invention, the configuration information of the demodulation pilot frequency of configuration adjacent R N is different, and this adjacent R N can be the RN in same sub-district or the different districts.
Step 402, base station side is sent the high-level signaling that carries configuration information to via node R1, and this via node is according to the demodulation pilot frequency of configuration information configuration return link control channel.Carry a kind of in above-mentioned 4 kinds of configuration informations in the configuration information wherein, R1 is any via node.
Step 403, base station side is sent the high-level signaling that carries configuration information to the adjacent via node of R1, and this adjacent via node is according to the demodulation pilot frequency of configuration information configuration return link control channel.Carry a kind of in 3 kinds of configuration informations except that the configuration information in the step 402 in the configuration information wherein.
Embodiment three
The embodiment of the invention three provides a kind of method that disposes the demodulation pilot frequency of return link control channel, and is as shown in Figure 5, may further comprise the steps:
Concrete, this configuration information is specially the configuration information of port numbers and/or scramble sequence number of the demodulation pilot frequency of return link control channel.Below be that port numbers and the scramble sequence of demodulation pilot frequency number is that example is introduced all with this configuration information.Because the DMRS port is 7 or 8, SCID is 0 or 1, so configuration information has following 4 kinds of situation: { port 7, SCID=0}{ port 7, SCID=1}{ port 8, SCID=0}{ port 8, SCID=1}.In the embodiment of the invention; The port numbers of the demodulation pilot frequency of the return link control channel of the via node of configuration in the same cells and scramble sequence are number identical, the port numbers and/or the scramble sequence difference of the demodulation pilot frequency of the return link control channel of the via node that different districts is interior.
It may be noted that step 502-504 only is that the step that the configuration information for demodulation pilot frequency that return link control channel is described carries out is divided, and is not limited to actual configuration information process of transmitting.
Embodiment four
The embodiment of the invention four provides a kind of method that disposes the demodulation pilot frequency of return link control channel, and is as shown in Figure 6, may further comprise the steps:
Concrete, this configuration information is specially the configuration information of port numbers and/or scramble sequence number of the demodulation pilot frequency of return link control channel.Below be that port numbers and the scramble sequence of demodulation pilot frequency number is that example is introduced all with this configuration information.Because the DMRS port is 7 or 8, SCID is 0 or 1, so configuration information has following 4 kinds of situation: { port 7, SCID=0}{ port 7, SCID=1}{ port 8, SCID=0}{ port 8, SCID=1}.
In the embodiment of the invention; In order to improve resource utilization; On identical running time-frequency resource, promptly the R-PDCCH channel of two via nodes uses identical running time-frequency resource on the back haul link, but its space isolation is relatively good; Promptly can distinguish different channels; Though the running time-frequency resource of two via node R-PDCCH is identical, can utilize different space resourcess on identical running time-frequency resource, to carry out the reception of R-PDCCH, this moment, these two via nodes disposed the configuration information of the demodulation pilot frequency that differs from one another.In the embodiment of the invention, have 4 different via nodes can use identical running time-frequency resource at most, these 4 different via nodes use a kind of in above-mentioned 4 kinds of configuration informations respectively.
It may be noted that step 602-605 only is that the step that the configuration information for demodulation pilot frequency that return link control channel is described carries out is divided, and is not limited to actual configuration information process of transmitting.
The configuration information that it may be noted that the demodulation pilot frequency of return link control channel in the embodiment of the invention can also be stored on the via node in advance, also stores the configuration identifier corresponding with configuration information on the via node.In the foregoing description two to four; Can carry this configuration identifier in the configuration information that base station side is sent; After via node receives configuration identifier; Search configuration identifier and the corresponding relation of configuration information of self storage, dispose the demodulation pilot frequency of the return link control channel of self according to the configuration information that finds.
Embodiment five
Based on the technical conceive identical with said method embodiment, the embodiment of the invention five provides a kind of base station equipment, and is as shown in Figure 7, comprising:
Acquiring unit 11 is used to obtain the configuration information of demodulation pilot frequency of the return link control channel of via node;
Transmitting element 12 is used for sending the high-level signaling that carries said configuration information to said via node.
Said transmitting element 12 also is used for: the high-level signaling that sends the port numbers of carrying demodulation pilot frequency to said via node.
Said transmitting element 12 also is used for: the high-level signaling that sends the scramble sequence number of carrying demodulation pilot frequency to said via node.
The configuration information that said acquiring unit 11 obtains comprises: the port numbers of the demodulation pilot frequency of the return link control channel of adjacent via node and/or scramble sequence difference.
The configuration information that said acquiring unit 11 obtains comprises: the port numbers of the demodulation pilot frequency of the return link control channel of the via node in the same cells and scramble sequence are number identical, the port numbers and/or the scramble sequence difference of the demodulation pilot frequency of the return link control channel of the via node that different districts is interior.
The configuration information that said acquiring unit 11 obtains comprises: for the identical via node of running time-frequency resource of return link control channel in the same sub-district, and the port numbers of the demodulation pilot frequency of the return link control channel of this via node and/or scramble sequence number mutual difference.
Said transmitting element 12 also is used for: the high-level signaling that sends the configuration identifier that carries demodulation pilot frequency to said via node.
Embodiment six
Based on the technical conceive identical with said method embodiment, the embodiment of the invention six provides a kind of trunking, and is as shown in Figure 8, comprising:
Receiving element 21 is used to receive the configuration information of the demodulation pilot frequency of return link control channel;
Dispensing unit 22 is used for according to said configuration information configuration demodulation pilot frequency;
Said receiving element 21 also is used for: the high-level signaling that receives the port numbers of carrying demodulation pilot frequency.
Said receiving element 21 also is used for: the high-level signaling that receives the scramble sequence number carry demodulation pilot frequency.
Said receiving element 21 also is used for: the high-level signaling that receives the configuration identifier that carries demodulation pilot frequency; Trunking also comprises acquiring unit 24, is used for searching according to the configuration identifier of said demodulation pilot frequency configuration identifier and the corresponding relation of configuration information of the demodulation pilot frequency of storage, obtains the configuration information corresponding with the configuration identifier of said demodulation pilot frequency.
In the embodiment of the invention; Base station side is obtained the configuration information of demodulation pilot frequency of the return link control channel of via node; Send this configuration information through high-level signaling to via node; Via node disposes the demodulation pilot frequency of return link control channel according to this configuration information, thereby can selectively dispose the demodulation pilot frequency of the return link control channel of different via nodes, avoids between the adjacent R N because the identical R-PDCCH phase mutual interference that causes of configuration of demodulation pilot frequency.
Through the description of above execution mode, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product; This computer software product is stored in the storage medium; Comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
It will be appreciated by those skilled in the art that accompanying drawing is the sketch map of a preferred embodiment, module in the accompanying drawing or flow process might not be that embodiment of the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.
The invention described above embodiment sequence number is not represented the quality of embodiment just to description.
More than disclosedly be merely several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (22)
1. a method that disposes the demodulation pilot frequency of return link control channel is characterized in that, comprising:
Base station side is obtained the configuration information of demodulation pilot frequency of the return link control channel of via node;
Said base station side is sent the high-level signaling that carries said configuration information to said via node.
2. the method for claim 1 is characterized in that, said base station side is sent the high-level signaling that carries said configuration information to said via node and comprised:
Said base station side is sent the high-level signaling of the port numbers of carrying demodulation pilot frequency to said via node.
3. according to claim 1 or claim 2 method is characterized in that, said base station side is sent the high-level signaling that carries said configuration information to said via node and comprised:
Said base station side is sent the high-level signaling of the scramble sequence number of carrying demodulation pilot frequency to said via node.
4. method as claimed in claim 3; It is characterized in that the configuration information of the demodulation pilot frequency of the return link control channel of the via node that said base station side is obtained comprises: the port numbers of the demodulation pilot frequency of the return link control channel of adjacent via node and/or scramble sequence difference.
5. method as claimed in claim 3; It is characterized in that; The configuration information of the demodulation pilot frequency of the return link control channel of the via node that said base station side is obtained comprises: the port numbers of the demodulation pilot frequency of the return link control channel of the via node in the same cells and scramble sequence are number identical, the port numbers and/or the scramble sequence difference of the demodulation pilot frequency of the return link control channel of the via node that different districts is interior.
6. method as claimed in claim 3; It is characterized in that; The configuration information of the demodulation pilot frequency of the return link control channel of the via node that said base station side is obtained comprises: for the identical via node of running time-frequency resource of return link control channel in the same sub-district, and the port numbers of the demodulation pilot frequency of the return link control channel of this via node and/or scramble sequence number mutual difference.
7. the method for claim 1 is characterized in that, said base station side is sent the high-level signaling that carries said configuration information to said via node:
Said base station side is sent the high-level signaling of the configuration identifier that carries demodulation pilot frequency to said via node.
8. a method that disposes the demodulation pilot frequency of return link control channel is characterized in that, comprising:
Via node receives the configuration information of the demodulation pilot frequency of return link control channel;
Said via node uses the demodulation pilot frequency demodulation return link control channel of configuration according to said configuration information configuration demodulation pilot frequency.
9. method as claimed in claim 8 is characterized in that, the configuration information that said via node receives the demodulation pilot frequency of return link control channel comprises: said via node receives the high-level signaling of the port numbers of carrying demodulation pilot frequency.
10. like claim 8 or 9 described methods, it is characterized in that the configuration information that said via node receives the demodulation pilot frequency of return link control channel comprises: said via node receives the high-level signaling of the scramble sequence number of carrying demodulation pilot frequency.
11. method as claimed in claim 10; It is characterized in that; The configuration information that said via node receives the demodulation pilot frequency of return link control channel comprises: said via node receives the high-level signaling of the configuration identifier that carries demodulation pilot frequency; Search configuration identifier and the corresponding relation of configuration information of the demodulation pilot frequency of storage according to the configuration identifier of said demodulation pilot frequency, obtain the configuration information corresponding with the configuration identifier of said demodulation pilot frequency.
12. a base station equipment is characterized in that, comprising:
Acquiring unit is used to obtain the configuration information of demodulation pilot frequency of the return link control channel of via node;
Transmitting element is used for sending the high-level signaling that carries said configuration information to said via node.
13. base station equipment as claimed in claim 12 is characterized in that, said transmitting element also is used for: the high-level signaling that sends the port numbers of carrying demodulation pilot frequency to said via node.
14., it is characterized in that said transmitting element also is used for: the high-level signaling that sends the scramble sequence number of carrying demodulation pilot frequency to said via node like claim 12 or 13 described base station equipments.
15. base station equipment as claimed in claim 14 is characterized in that, the configuration information that said acquiring unit obtains comprises: the port numbers of the demodulation pilot frequency of the return link control channel of adjacent via node and/or scramble sequence difference.
16. base station equipment as claimed in claim 14; It is characterized in that; The configuration information that said acquiring unit obtains comprises: the port numbers of the demodulation pilot frequency of the return link control channel of the via node in the same cells and scramble sequence are number identical, the port numbers and/or the scramble sequence difference of the demodulation pilot frequency of the return link control channel of the via node that different districts is interior.
17. base station equipment as claimed in claim 14; It is characterized in that; The configuration information that said acquiring unit obtains comprises: for the identical via node of running time-frequency resource of return link control channel in the same sub-district, and the port numbers of the demodulation pilot frequency of the return link control channel of this via node and/or scramble sequence number mutual difference.
18. base station equipment as claimed in claim 12 is characterized in that, said transmitting element also is used for: the high-level signaling that sends the configuration identifier that carries demodulation pilot frequency to said via node.
19. a trunking is characterized in that, comprising:
Receiving element is used to receive the configuration information of the demodulation pilot frequency of return link control channel;
Dispensing unit is used for according to said configuration information configuration demodulation pilot frequency;
Demodulating unit is used to the demodulation pilot frequency demodulation return link control channel that uses said dispensing unit to dispose.
20. trunking as claimed in claim 19 is characterized in that, said receiving element also is used for: the high-level signaling that receives the port numbers of carrying demodulation pilot frequency.
21., it is characterized in that said receiving element also is used for: the high-level signaling that receives the scramble sequence number carry demodulation pilot frequency like claim 19 or 20 described trunkings.
22., it is characterized in that said receiving element also is used for: the high-level signaling that receives the configuration identifier that carries demodulation pilot frequency like claim 19 or 20 described trunkings;
Also comprise acquiring unit, be used for searching configuration identifier and the corresponding relation of configuration information of the demodulation pilot frequency of storage, obtain the configuration information corresponding with the configuration identifier of said demodulation pilot frequency according to the configuration identifier of said demodulation pilot frequency.
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| CN2010105378507A CN102468908A (en) | 2010-11-05 | 2010-11-05 | Configuration method of demodulation reference signal of backhaul link control channel and equipment |
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| CN2010105378507A CN102468908A (en) | 2010-11-05 | 2010-11-05 | Configuration method of demodulation reference signal of backhaul link control channel and equipment |
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| CN101388686A (en) * | 2007-09-14 | 2009-03-18 | 中兴通讯股份有限公司 | Method and device implementing downlink pilot under coexistence of uni-cast and broadcast multicast service |
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Application publication date: 20120523 |