CN103580839B - Detecting on CSI-RS of auxiliary cell in communication system based on carrier aggregation - Google Patents
Detecting on CSI-RS of auxiliary cell in communication system based on carrier aggregation Download PDFInfo
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- CN103580839B CN103580839B CN201210275899.9A CN201210275899A CN103580839B CN 103580839 B CN103580839 B CN 103580839B CN 201210275899 A CN201210275899 A CN 201210275899A CN 103580839 B CN103580839 B CN 103580839B
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Abstract
The invention provides the scheme for detecting a CSI-RS transmitted by an auxiliary cell in a wireless communication system based on carrier aggregation. User equipment firstly determines all paging subframes on the auxiliary cell, then the CSI-RS transmitted by the auxiliary cell on other subframes except for all the paging subframes and specific subframes on the auxiliary cell according to the CSI-RS configuration information transmitted by the auxiliary cell is detected, and finally channel estimation is carried out according to the detected CSI-RS. The user equipment determines all the paging subframes on the auxiliary cell through the following modes: (1) receiving paging parameters, sent by a base station, of the auxiliary cell, determining all the paging subframes on the auxiliary cell according to the paging parameters, (2) obtaining paging parameters of a main cell, determining all the paging subframes on the auxiliary cell according to the paging parameters, (3) in an FDD system, determining the subframes #0, #4, #5 and #9 as all the paging subframes on the auxiliary cell, and in a TDD system, determining the subframes #0, #1, #5 and #6 as all the paging subframes on the auxiliary cell.
Description
Technical field
The application is related to the wireless communication system based on carrier aggregation (Carrier Aggregation, CA) technology, especially
It is related to detect the method and apparatus from the CSI-RS of cell in the wireless communication system based on carrier aggregation.
Background technology
In LTE Release10, channel state information reference signals (Channel State are introduced
Information reference signals, CSI-RS), estimate to believe for user equipment (User Equipment, UE)
Road state, it is particularly well-suited to 8 scenes of transmission antenna.Defined in Release before, user equipment it shall be assumed that
CSI-RS is transmitted not in following subframe：
In the special subframe of-frame structure type 2；
- synchronous signal transmission, Physical Broadcast Channel or (the System Information of system information block type 1
Block 1) message subframe in；
In the subframe of-transmission beep-page message.
That is, understanding before is：User equipment is it shall be assumed that CSI-RS is passed not in its specific paging subframe
It is defeated.In fact, this understand it is wrong.In 3GPP RAN 1#69 meetings, it has been noted that the mistake simultaneously is agreed to enter it
Row modification is (referring to R1-123065).Correctly understanding be：User equipment is not it shall be assumed that CSI-RS is in all user equipmenies
Paging subframe in transmit.
For the above-mentioned modification of RAN1,3GPP RAN2 need to consider the influence that this modification is likely to result in.For example, in carrier wave
In aggregation scene, CSI-RS is configured with from cell (Secondary Cell, SCell) when one, then user equipment should be known
The paging subframe from cell is known, so that it is determined that correct subframe, carries out this and detected from the CSI-RS of cell.
However, RAN2 not yet considers what the CSI-RS caused by cell-specific (cell-specific) paging configuration was detected
These problems.
The content of the invention
Considered based on above-mentioned, according to an aspect of the present invention, it is proposed that a kind of use of communication system in carrier aggregation
Be used to detecting the method from the CSI-RS of cell transmission in the equipment of family, the user device configuration have main plot and at least one from
Cell, wherein, the described method comprises the following steps：A. all paging subframes from cell are determined；B. according to it is described from
The CSI-RS configuration information of cell, except the described all paging subframes from cell and other in addition to specific sub-frame
In subframe, the detection CSI-RS from cell transmission；And c. is according to the CSI-RS for detecting, channel estimation is carried out.
In one embodiment, the step a is comprised the following steps：Receive as described in base station is sent by dedicated signaling
From the paging parameters of cell；And according to the paging parameters from cell, it is determined that described described all from cell
Paging subframe.
In one embodiment, when the paging subframe covering paging subframe from cell on the main plot, institute
Step a is stated to comprise the following steps：Obtain the paging parameters of the main plot；And joined according to the paging of the main plot
Number, it is determined that all paging subframes from cell.
In one embodiment, the step a includes：In fdd, subframe #0, #4, #5 and #9 are defined as described from small
Described all paging subframes in area；In TDD, subframe #0, #1, #5 and #6 are defined as described described all from cell
Paging subframe.
According to another aspect of the present invention, it is proposed that a kind of to be used in the base station of the communication system based on carrier aggregation
Assisting user equipment detects the method from the CSI-RS of cell transmission, wherein, the described method comprises the following steps：By special letter
Order sends described from the paging parameters of cell to the user equipment.
According to a further aspect of the invention, it is proposed that a kind of in the user equipment of the communication system based on carrier aggregation
For detecting the device from the CSI-RS of cell transmission, the user device configuration has main plot and at least one from cell, its
In, described device includes：First determining device, for determining all paging subframes from cell；Detection means, is used for
According to the CSI-RS configuration information from cell, except the described all paging subframes and specific sub-frame from cell
Outside other subframes on, the detection CSI-RS from cell transmission；And estimation unit, for according to the CSI- for detecting
RS, carries out channel estimation.
According to a further aspect of the invention, it is proposed that a kind of to be used in the base station of the communication system based on carrier aggregation
Assisting user equipment detects the device from the CSI-RS of cell transmission, wherein, described device includes：Dispensing device, for passing through
Dedicated signaling sends described from the paging parameters of cell to the user equipment.
Various aspects of the invention will be become apparent from by the explanation of embodiment in detail below.
Brief description of the drawings
The detailed description made to non-limiting example made with reference to the following drawings by reading, it is of the invention above-mentioned
And other features will become more apparent：
Fig. 1 shows and according to an embodiment of the invention is used in the user equipment of the communication system based on carrier aggregation
In detection from the method flow diagram of the CSI-RS of cell.
Accompanying drawing mark same or similar in accompanying drawing represents same or similar part.
Specific embodiment
Technical scheme is applied to the wireless communication system based on carrier aggregation.Hereinafter, with the radio communication
It is described as a example by user equipment 10 in system.
User equipment 10 is configured with main plot and at least one from cell.In which it is assumed that being provided with CSI-RS from cell A
Channel state information reference signals (are being transmitted) in source from cell A, and user equipment 10 needs to detect CSI- from cell A from this
RS。
Specifically, first, in step s 11, user equipment 10 determines all paging subframes from cell A.
User equipment 10 can in several ways determine all paging subframes from cell A.In one embodiment,
Base station 20 is sent from the paging parameters of cell A to user equipment 10 by a dedicated signaling.The dedicated signaling can be for example,
RRC (Radio Resource Control, wireless heterogeneous networks) signaling, can be specifically that wireless heterogeneous networks connection is matched somebody with somebody again
Confidence makes (RRC Connection Reconfiguration).User equipment 10 receives being somebody's turn to do from cell A from base station 20
Paging parameters after, according to this from the paging parameters of cell A, it is determined that from all paging subframes of cell A.How is user equipment 10
Determine that all paging subframes are (referring to 7.2 sections in TS36.304) known in the field according to paging parameters, for simplicity,
Therefore not to repeat here.
In another embodiment, if all paging subframes covering on the main plot of user equipment 10 should be from cell A
On all paging subframes, then, user equipment 10 can determine all from cell A according to the paging parameters of main plot
Paging subframe.
Specifically, user equipment 10 obtains the paging parameters of main plot by system information block, then, according to main plot
Paging parameters, it is determined that all paging subframes from cell A.
The word of term " covering " herein is meant that：By taking FDD system as an example, the institute on the main plot of user equipment 10
When having paging subframe for such as subframe #0, #4, #5 and #9, all paging subframes from cell A are subframe #0, #4, #5 and #9
In any one or appoint it is various.
In yet another embodiment, in FDD system, user equipment 10 can by subframe #0, #4, #5 and #9 be defined as from
All paging subframes on cell A；In a tdd system, can be defined as from small for subframe #0, #1, #5 and #6 by user equipment 10
All paging subframes on area A.Paging frame frequency (for example, in FDD system, i.e. paging subframe #0, or #4, or #5, or #9
The frequency of appearance) determined by nB, its scope can be from every 10ms to every 320ms.Specifically, in FDD system, user equipment 10
Can be by subframe #0, #4, #5 and #9, and the frequency of paging frame is 10ms as all paging subframes from cell A；User
Equipment 10 can also be by subframe #0, #4, #5 and #9, and the frequency of the paging frame of main plot is sought as all from cell A
Exhale subframe.
After all paging subframes that user equipment 10 determines from cell A, in step s 12, user equipment 10
According to the CSI-RS configuration information from cell A, in other in addition to all paging subframes and specific sub-frame from cell A
In subframe, detect this from the CSI-RS of cell A transmission.
Wherein, the specific sub-frame at least special subframe including frame structure type 2, and synchronous signal transmission, physical broadcast
The subframe of channel or the message of system information block type 1.
Sent to user equipment 10 by dedicated signaling from base station 20 from the CSI-RS configuration information of cell A.
Then, in step s 13, user equipment carries out channel estimation according to the CSI-RS for detecting.
In other embodiments, if from cell A and other co-frequency cells be based on coordinated multipoint transmission (CoMP,
Coordinated MuIti-point Transmission) technology communicated with user equipment 10, then, in identical frequently
More than one CSI-RS will be configured with rate.In such a scenario, base station 20 need respectively will from cell A and its cooperate
The paging parameters of cell (other i.e. above-mentioned co-frequency cells) are sent to user equipment 10, so that user equipment 10 can determine respectively
All paging subframes of individual cell.
Certainly, in the case of the paging subframe that the paging subframe from cell A is cooperated therewith in cell is harmonious, base
Standing 20 will be sent to user equipment 10 from the paging parameters of cell A, and user equipment 10 is joined according to from the paging of cell A
Number, it is possible to determine all paging subframes on its cooperation cell.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be in other specific forms realized.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be it is nonrestrictive, should not by claim appoint
What reference is considered as the claim involved by limitation.Additionally, it will be evident that " including " word is not excluded for other elements or step
Suddenly, the word of " one " one before element is not excluded for including " multiple " element.The multiple element stated in claim to a product
Can be realized by software or hardware by an element.The first, the second grade word is used for representing title, and is not offered as appointing
What specific order.
Claims (15)
1. it is a kind of to be used to detect the side from the CSI-RS of cell transmission in the user equipment of the communication system based on carrier aggregation
Method, the user device configuration has main plot and at least one from cell, and the user equipment passes through described at least one
Perform coordinated multipoint transmission (CoMP) from cell and other cooperation cells from cell, wherein, methods described include with
Lower step：
A. all paging subframes from cell are determined；
B. according to the CSI-RS configuration information transmitted from cell and the cooperation cell, except it is described from cell described in
In other subframes outside all paging subframes and specific sub-frame, the detection CSI-RS from cell transmission；
C. according to the CSI-RS for detecting, channel estimation is carried out.
2. method according to claim 1, it is characterised in that the step a is comprised the following steps：
- receive the paging parameters from cell and the cooperation cell as described in base station is sent by dedicated signaling；
- according to the paging parameters from cell and the cooperation cell, it is determined that described all from cell seek
Exhale subframe.
3. method according to claim 2, it is characterised in that the dedicated signaling is RRC signaling.
4. method according to claim 1, it is characterised in that the paging subframe covering on the main plot is described from cell
On paging subframe, the step a comprises the following steps：
The paging parameters of-acquisition the main plot；
- according to the paging parameters of the main plot, it is determined that all paging subframes from cell.
5. method according to claim 1, it is characterised in that the step a includes：
- in FDD system, subframe #0, #4, #5 and #9 are defined as the described all paging subframes from cell；In TDD
In system, subframe #0, #1, #5 and #6 are defined as the described all paging subframes from cell.
6. method according to claim 1, it is characterised in that the specific sub-frame includes：The special son of frame structure type 2
Frame, and synchronous signal transmission, Physical Broadcast Channel or the message of system information block type 1 subframe.
7. it is a kind of to be used for assisting user equipment detection from cell transmission in the base station of the communication system based on carrier aggregation
The method of CSI-RS, the user device configuration has main plot and at least one from cell, and the user equipment passes through institute
State at least one and perform coordinated multipoint transmission (CoMP) from cell and other cooperation cells from cell, wherein, it is described
Method is comprised the following steps：
- send described from the paging parameters of cell and the cooperation cell to the user equipment by dedicated signaling, wherein institute
Paging parameters are stated for determining all paging subframes from cell.
8. method according to claim 7, it is characterised in that the dedicated signaling is RRC signaling.
9. it is a kind of to be used to detect the dress from the CSI-RS of cell transmission in the user equipment of the communication system based on carrier aggregation
Put, the user device configuration has main plot and at least one from cell, and the user equipment passes through described at least one
Coordinated multipoint transmission (CoMP) is performed from cell and other cooperation cells from cell, wherein, described device includes：
First determining device, for determining all paging subframes from cell；
Detection means, for according to the CSI-RS configuration information transmitted from cell and the cooperation cell, except it is described from
In other subframes outside described all paging subframes and specific sub-frame in cell, the detection CSI- from cell transmission
RS；
Estimation unit, for according to the CSI-RS for detecting, carrying out channel estimation.
10. device according to claim 9, it is characterised in that first determining device includes：
Reception device, joins as described in base station is sent by dedicated signaling for receiving from the paging of cell and the cooperation cell
Number；
Second determining device, for according to the paging parameters from cell and the cooperation cell, it is determined that described from small
Described all paging subframes in area.
11. devices according to claim 10, it is characterised in that the dedicated signaling is RRC signaling.
12. devices according to claim 9, it is characterised in that paging subframe covering on the main plot is described from small
Paging subframe in area, first determining device includes：
Acquisition device, the paging parameters for obtaining the main plot；
3rd determining device, for the paging parameters according to the main plot, it is determined that all pagings from cell
Subframe.
13. devices according to claim 9, it is characterised in that first determining device includes：
4th determining device, in FDD system, subframe #0, #4, #5 and #9 being defined as into the institute from cell
There is paging subframe；In a tdd system, subframe #0, #1, #5 and #6 are defined as described all pagings from cell
Frame.
14. devices according to claim 9, it is characterised in that the specific sub-frame includes：Frame structure type 2 it is special
Subframe, and synchronous signal transmission, Physical Broadcast Channel or the message of system information block type 1 subframe.
A kind of 15. assisting user equipments that are used in the base station of the communication system based on carrier aggregation are detected from cell transmission
The device of CSI-RS, the user device configuration has main plot and at least one from cell, and the user equipment passes through institute
State at least one and perform coordinated multipoint transmission (CoMP) from cell and other cooperation cells from cell, wherein, it is described
Device includes：
Dispensing device, for sending described from the paging parameters of cell to the user equipment by dedicated signaling, wherein described
Paging parameters are used to determine all paging subframes from cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210275899.9A CN103580839B (en) | 2012-08-03 | 2012-08-03 | Detecting on CSI-RS of auxiliary cell in communication system based on carrier aggregation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210275899.9A CN103580839B (en) | 2012-08-03 | 2012-08-03 | Detecting on CSI-RS of auxiliary cell in communication system based on carrier aggregation |
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| CN103580839A CN103580839A (en) | 2014-02-12 |
| CN103580839B true CN103580839B (en) | 2017-05-24 |
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| EP3826388B1 (en) | 2014-06-06 | 2024-03-27 | Nokia Solutions and Networks Oy | Paging message coverage enhancement |
Citations (3)
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|---|---|---|---|---|
| CN101924610A (en) * | 2010-08-02 | 2010-12-22 | 西安电子科技大学 | Method for designing channel state information reference signal (CSI-RS) in LTE-A (Long Term Evolution-Advanced) system |
| CN102136891A (en) * | 2011-05-16 | 2011-07-27 | 电子科技大学 | Improved channel state information (CSI) limited feedback method for multi-user multiple input multiple output (MU-MIMO) system |
| CN102340379A (en) * | 2010-07-15 | 2012-02-01 | 中国移动通信集团公司 | CSI-RS (Channel Status Information-Reference Signal) transmission method and detection method, and devices of CSI-RS transmission method and detection method |
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2012
- 2012-08-03 CN CN201210275899.9A patent/CN103580839B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102340379A (en) * | 2010-07-15 | 2012-02-01 | 中国移动通信集团公司 | CSI-RS (Channel Status Information-Reference Signal) transmission method and detection method, and devices of CSI-RS transmission method and detection method |
| CN101924610A (en) * | 2010-08-02 | 2010-12-22 | 西安电子科技大学 | Method for designing channel state information reference signal (CSI-RS) in LTE-A (Long Term Evolution-Advanced) system |
| CN102136891A (en) * | 2011-05-16 | 2011-07-27 | 电子科技大学 | Improved channel state information (CSI) limited feedback method for multi-user multiple input multiple output (MU-MIMO) system |
Non-Patent Citations (2)
| Title |
|---|
| CSI-RS for LTE-Advanced;Dresden;《3GPP TSG-RAN WG1 #61bis R1-103545》;20100628;第7页第6.1节 * |
| User Equipment (UE) procedures in idle mode;3rd Generation Partnership Project;《3GPP TS 36.304 V10.2.0》;20110630;全文 * |
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Address after: Pudong New Area, Pudong Jinqiao Ning Bridge Road, No. 388, No. Applicant after: Shanghai Alcatel-Lucent Co., Ltd. Applicant after: Alcatel Optical Networks Israe Address before: 201206 Shanghai, Pudong Jinqiao Ning Bridge Road, No. 388, No. Applicant before: Shanghai Alcatel-Lucent Co., Ltd. Applicant before: Alcatel Optical Networks Israe |
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Address after: Pudong New Area, Pudong Jinqiao Ning Bridge Road, No. 388, No. Co-patentee after: Alcatel Optical Networks Israe Patentee after: Shanghai NOKIA Baer Limited by Share Ltd Address before: 201206 Shanghai, Pudong Jinqiao Ning Bridge Road, No. 388, No. Co-patentee before: Alcatel Optical Networks Israe Patentee before: Shanghai Alcatel-Lucent Co., Ltd. |
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