CN104581805A - Interference measurement method and equipment for channel in eIMTA system - Google Patents
Interference measurement method and equipment for channel in eIMTA system Download PDFInfo
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Abstract
The invention discloses an interference measurement method for a channel in an eIMTA system. The interference measurement method comprises the following steps: UE receives configuration information of a base station; the UE determines a subframe where CSI-IM resources are located in a corresponding CSI-IM subframe set according to the configuration of a CSI-IM subframe corresponding to each CSI-IM subframe set in a serving cell and the configuration of the CSI-IM resources and performs interference measurement on the determined subframe; when the CSI-IM subframe set is a flexible CSI-IM subframe set including subframes allowed for change in uplink and downlink transmission directions, the UE further determines an actual downlink subframe as a subframe where the CSI-IM resources are located in the flexible CSI-IM subframe set according to current actual TDD uplink and downlink configuration. By the application of the interference measurement method, the CSI-IM resources can be accurately utilized, and the interference borne by different types of downlink subframes in a TDD re-configuration system is measured.
Description
Technical field
The application relates to mobile communication technology field, and specifically, the channel disturbance of interference management and service adaptation system (eIMTA) that the application relates to enhancing measures (CSI-IM) method and apparatus.
Background technology
Long Term Evolution (LTE, Long Term Evolution) technical support Frequency Division Duplexing (FDD) (FDD, FrequencyDivision Duplexing) and time division duplex (TDD, Time Division Duplexing) two kinds of duplex modes.Transmission in TDD system comprises: by base station to the transmission (being called descending) of subscriber equipment (UE, User Equipment) with by the transmission (be called up) of UE to base station.Based on the frame structure shown in Fig. 1, in every 10ms time uplink and downlink share 10 subframes, each subframe or configuration to up or configuration to descending, by configuration be called sub-frame of uplink to up subframe, by configuration be called descending sub frame to descending subframe.Support 7 kinds of TDD upstream and downstream configurations in TDD system, as shown in table 1, D represents descending sub frame, and U represents sub-frame of uplink, and S represents the above-mentioned special subframe comprising 3 special domain.
Table 1TDD upstream and downstream allocation list
Interference in TDD system between the uplink of neighbor cell and downlink transfer, current neighbor cell all adopts identical TDD upstream and downstream configuration.Along with user is to the raising of data transmission rates demands, people also been proposed enhancing (LTE-A) technology of LTE.In LTE-A, be introduced through TDD reconfiguration technology, namely the configuration of dynamic conditioning TDD upstream and downstream is carried out by signaling, the ratio of current sub-frame of uplink and descending sub frame can be made more to meet the ratio of current upstream traffic and downlink traffic, be conducive to improving the upstream and downstream peak rate of user and improve the throughput of system, such neighbor cell may adopt different TDD upstream and downstream configurations, and neighbor cell adopts different TDD upstream and downstream configurations that the downlink transfer of Serving cell can be made may to be subject to bringing interference to neighbor cell uplink.With current all adopt identical TDD upstream and downstream to configure in neighbor cell time descending different to descending interference, as shown in Figure 2, Serving cell is descending sub frame in subframe 0, neighbor cell is descending sub frame in subframe 0, Serving cell is subject to the interference of the descending sub frame of neighbor cell at descending sub frame 0, Serving cell is descending sub frames in subframe 8, and neighbor cell is sub-frame of uplink in subframe 8, and Serving cell is subject to the interference of the sub-frame of uplink of neighbor cell at descending sub frame 8.And descending sub frame wants serious to the interference ratio sub-frame of uplink of descending sub frame to descending sub frame, therefore the disturbed condition measuring in Serving cell the descending sub frame being subject to dissimilar interference is respectively necessary, measurements interference needs the reference signal resource providing measurements interference at dissimilar descending sub frame, the application passes through the corresponding CSI-IM resource of configuration, to solve dissimilar descending sub frame interferometry problem in TDD reconfiguration system.
The defining method of the CSI-IM resource of current non-eIMTA system is: UE receives sub-frame configuration and the resource distribution of CSI-IM, the sub-frame configuration of the sub-frame configuration of CSI-IM and resource distribution reference CSI RS and resource distribution form, as shown in table 2.Resource distribution is the position being configured in concrete resource element (RE) shared by CSI-IM in a subframe, and this method adopts the method for configuration CSI-IM resource distribution at present.Index for the sub-frame configuration of CSI-IM comprises one-period and a skew, as shown in table 2.According to formula
bring the cycle of configuration and skew into subframe that formula can determine the resource place of CSI-IM.Wherein, n
ffor radio frame number, n
sfor timeslot number, T
cSI-RSand Δ
cSI-RSbe respectively the cycle in described CSI-IM resource distribution and skew,
represent downward floor operation, mod represents modulo operation.
Table 2
In addition, because Serving cell is the community of reshuffling, the subframe at the CSI-IM resource place that the UE that described Serving cell configures is proprietary may become sub-frame of uplink by descending sub frame, the proprietary CSI-IM resource of then configured UE is not present in, and how to ensure to find corresponding CSI-IM resource to be the problem that the present invention studies when the descending sub frame of Serving cell may become sub-frame of uplink.
Summary of the invention
The object of the application is intended at least solve one of above-mentioned technological deficiency, UE in a kind of TDD reconfiguration system is provided to utilize proprietary CSI-IM resource to carry out the method and apparatus of interferometry, to make UE under TDD reshuffles mode of operation, can accurately utilize CSI-IM resource, the interference that descending sub frame dissimilar in TDD reconfiguration system is subject to is measured.
This application discloses the interference detecting method of channel in a kind of eIMTA system, comprising:
UE receives the configuration information of base station; Described configuration information is used for configuration UE in Serving cell, is operated in TDD reconfiguration mode, and indicate UE in two CSI-IM sub-frame set at the most of described Serving cell, and the CSI-IM sub-frame configuration corresponding with each CSI-IM sub-frame set and CSI-IM resource distribution;
UE, according to CSI-IM sub-frame configuration corresponding to each CSI-IM sub-frame set in described Serving cell and CSI-IM resource distribution, determines the subframe at the CSI-IM resource place in corresponding CSI-IM sub-frame set, and carry out interferometry in the subframe determined;
Wherein, when described CSI-IM sub-frame set is the flexible CSI-IM sub-frame set of the subframe comprising the permission change of downstream transmission direction, UE according to current actual TDD upstream and downstream configuration, determines the subframe at the CSI-IM resource place in described flexible CSI-IM sub-frame set further.
Preferably, the CSI-IM sub-frame configuration that described basis flexible CSI-IM sub-frame set is corresponding and CSI-IM resource distribution, current actual TDD upstream and downstream configure, and determine that the subframe at the CSI-IM resource place in flexible CSI-IM sub-frame set comprises:
According to
determine the logic subframe sequence number n at the CSI-IM resource place in flexible CSI-IM sub-frame set; Wherein, n
ffor radio frame number, n
sfor timeslot number, T
cSI-RSand Δ
cSI-RSbe respectively the cycle in described CSI-IM resource distribution and skew,
represent downward floor operation, mod represents modulo operation;
According to current actual TDD upstream and downstream configuration, by the
(n mod5)+1 in the radio frames of+1 half belongs to the actual downstream subframe that flexible CSI-IM gathers, as the subframe at the CSI-IM resource place in described flexible CSI-IM sub-frame set.
Preferably, the CSI-IM sub-frame configuration that described basis flexible CSI-IM sub-frame set is corresponding and CSI-IM resource distribution, current actual TDD upstream and downstream configure, and determine that the subframe at the CSI-IM resource place in flexible CSI-IM sub-frame set comprises:
According to
determine the subframe meeting described CSI-IM sub-frame configuration, and determine half radio frames residing for corresponding subframe; Wherein, n
ffor radio frame number, n
sfor timeslot number, T
cSI-RSand Δ
cSI-RSbe respectively the cycle in described CSI-IM resource distribution and skew;
According to current actual TDD upstream and downstream configuration, the 1st in half radio frames determined is belonged to the actual downstream subframe that flexible CSI-IM gathers, as the subframe at the CSI-IM resource place in described flexible CSI-IM sub-frame set.
Preferably, the CSI-IM sub-frame configuration that described basis flexible CSI-IM sub-frame set is corresponding and CSI-IM resource distribution, current actual TDD upstream and downstream configure, and determine that the subframe at the CSI-IM resource place in flexible CSI-IM sub-frame set comprises:
According to
determine the logic subframe sequence number n at the CSI-IM resource place in flexible CSI-IM sub-frame set; Wherein, n
ffor radio frame number, n
sfor timeslot number, T
cSI-RSand Δ
cSI-RSbe respectively the cycle in described CSI-IM resource distribution and skew,
represent downward floor operation, mod represents modulo operation;
According to
determine half radio frames that logic subframe sequence number n is corresponding or radio frames;
According to current actual TDD upstream and downstream configuration, will the 1st actual downstream subframe of flexible CSI-IM sub-frame set be belonged in half radio frames determined or radio frames, as the subframe at the CSI-IM resource place in described flexible CSI-IM sub-frame set.
Preferably, the CSI-IM sub-frame configuration that described basis flexible CSI-IM sub-frame set is corresponding and CSI-IM resource distribution, current actual TDD upstream and downstream configure, and determine that the subframe at the CSI-IM resource place in flexible CSI-IM sub-frame set comprises:
According to
determine the logic subframe sequence number n at the CSI-IM resource place in flexible CSI-IM sub-frame set; Wherein, n
ffor radio frame number, n
sfor timeslot number, T
cSI-RSand Δ
cSI-RSbe respectively the cycle in described CSI-IM resource distribution and skew,
represent downward floor operation, mod represents modulo operation;
According to current actual TDD upstream and downstream configuration, by interval
the 1st actual downstream subframe of flexible CSI-IM sub-frame set is belonged to, as the subframe at the CSI-IM resource place in described flexible CSI-IM sub-frame set in scope; Wherein, Δ=min (10, T
cSI-RS),
represent the operation that rounds up.
An interference measuring apparatus for channel in eIMTA system, comprises configuration receiving element, subframe determining unit and interferometry unit;
Described configuration receiving element, for receiving the configuration information of base station, described configuration information is used for configuration UE in Serving cell, is operated in TDD reconfiguration mode, and indicate UE in two CSI-IM sub-frame set at the most of described Serving cell, and the CSI-IM sub-frame configuration corresponding with each CSI-IM sub-frame set and CSI-IM resource distribution;
Described subframe determining unit, for according to CSI-IM sub-frame configuration corresponding to CSI-IM sub-frame set each in described Serving cell and CSI-IM resource distribution, determines the subframe at the CSI-IM resource place in corresponding CSI-IM sub-frame set; Wherein, when described CSI-IM sub-frame set is the flexible CSI-IM sub-frame set of the subframe comprising the permission change of downstream transmission direction, further according to current actual TDD upstream and downstream configuration, determine the subframe at the CSI-IM resource place in flexible CSI-IM sub-frame set;
Described interferometry unit, carries out interferometry in the subframe determined in subframe determining unit.
As seen from the above technical solution, in the application, be under UE is configured in and is operated in TDD reconfiguration mode in certain Serving cell by configuration information, and indicate at the most two the CSI-IM sub-frame set of UE in respective service community, and the CSI-IM sub-frame configuration corresponding with each CSI-IM sub-frame set and CSI-IM resource distribution; For the flexible CSI-IM sub-frame set (namely sub-frame set comprises the subframe that downstream transmission direction allows to change) of this Serving cell, the CSI-IM sub-frame configuration corresponding according to this sub-frame set and CSI-IM resource distribution, current actual TDD upstream and downstream configure, determine the subframe at CSI-IM resource place in flexible CSI-IM sub-frame set, and carry out interferometry in the subframe determined.By the way, even if the descending sub frame in CSI-IM sub-frame set may be transformed to sub-frame of uplink, but still can according to actual TDD upstream and downstream configuration, determine the subframe of an actual downstream subframe as CSI-IM resource place, ensure that CSI-IM resource all can be determined under various TDD upstream and downstream configuration, and then UE is measured the interference that descending sub frame in TDD reconfiguration system is subject to.
Accompanying drawing explanation
Fig. 1 is the frame structure schematic diagram of the TDD system of LTE;
Fig. 2 is the schematic diagram that under TDD reshuffles situation, different subframe is disturbed situation;
Fig. 3 is the basic procedure schematic diagram utilizing CSI-IM resource to carry out the method for interferometry in the application TDD reconfiguration system;
Fig. 4 is the basic structure schematic diagram of interference measuring apparatus in the application TDD reconfiguration system.
Embodiment
In order to make the object of the application, technological means and advantage clearly understand, below in conjunction with accompanying drawing, the application is described in further details.
In order to realize the object of the application, present applicant proposes a kind of UE and utilizing proprietary CSI-IM resource to carry out the method for interferometry.Wherein, the interference detecting method in the application is described at the interferometry of certain Serving cell for UE, and in this Serving cell, UE is operated in TDD reconfiguration mode.In actual applications, the mode that the application can be applied in the Serving cell working in TDD reconfiguration mode for UE carries out interferometry; Other Serving cells for UE can adopt existing mode to carry out interferometry.As shown in Figure 3, the method that in the application, UE carries out interferometry in Serving cell comprises the following steps:
Step 301:UE receives the configuration information of base station, this configuration information configuration UE is operated in TDD reconfiguration mode in certain Serving cell, and indicate at the most two the CSI-IM sub-frame set of UE in this Serving cell, and the CSI-IM sub-frame configuration corresponding with each sub-frame set and CSI-IM resource distribution;
The CSI-IM sub-frame set that the UE working in TDD reconfiguration mode configures in Serving cell is at most two, such as, be configured to set 1 and set 2.
If the descending sub frame in certain set described changes along with TDD reconfiguration information, the subframe namely in set likely becomes sub-frame of uplink from descending sub frame, then claim this CSI-IM sub-frame set to be flexible CSI-IM sub-frame set.
Step 302:UE receives the TDD upstream and downstream configuration information of the physical layer signaling instruction acquisition Serving cell reality that base station sends, and determines the subframe at the CSI-IM resource place in flexible CSI-IM sub-frame set.
For flexible CSI-IM sub-frame set, the subframe in set may become up from descending, and namely downstream transmission direction allows to change.If just the subframe at CSI-IM resource place becomes up by descending, then UE cannot carry out interferometry according to the reception information in corresponding subframe.Based on this, the application is when determining the CSI-IM resource location in flexible CSI-IM sub-frame set, according to current actual TDD upstream and downstream configuration, in flexible CSI-IM sub-frame set, select an actual downstream subframe as the subframe at CSI-IM resource place, thus ensure no matter TDD upstream and downstream is configured to any, can both realize interferometry.
The CSI-IM resource location that step 303:UE determines in step 302 carries out the interferometry of Serving cell.
The above-mentioned basic flow sheet being interference detecting method in the application.In above-mentioned flow process, preferably, configuration can be utilized to two CSI-IM sub-frame set of UE respective service community, carry out the interferometry of dissimilar subframe in this Serving cell respectively.Certainly, the application is not limited to this mode.
Below by specific embodiment, the concrete grammar that CSI-IM resource in flexible CSI-IM sub-frame set is determined is described.
Embodiment one:
Determine that the method for the subframe residing for resource of the CSI-IM of flexible CSI-IM sub-frame set is: UE receives a sub-frame configuration of CSI-IM in Serving cell, by 2 one-period and the skews obtaining the sub-frame configuration of CSI-IM of tabling look-up, according to formula
can determine the logic subframe sequence number n at CSI-IM resource place, then the actual downstream subframe at CSI-IM place is the actual downstream subframe that (n mod5)+1 in the radio frames of FLOOR (n/5)+1 half belongs to flexible CSI-IM and gather.Wherein, n meets formula
the n of condition
sthe formula brought into below obtains,
Such as, configuration to UE in two CSI-IM sub-frame set of Serving cell is: { subframe 0, subframe 1, subframe 5, subframe 6} and { subframe 3, subframe 4, subframe 8, subframe 9}, and according to the eIMTA relevant configuration in Serving cell, subframe 3, subframe 4, subframe 8 and subframe 9 are flexible sub-frame, so gather, { subframe 3, subframe 4, subframe 8, subframe 9} are flexible CSI-IM sub-frame set.If the cycle of CSI-IM is 10 milliseconds in Serving cell, the sub-frame offset of CSI-IM is 5, according to formula
the subframe of subframe 5 for meeting the demands in radio frames 0, according to the method described above, half Radio Frame Number of subframe 5 correspondence is 2, if now the in fact downstream arrangements of subframe 0 is configuration 2, then in this Serving cell, the actual subframe position at CSI-IM place is that the 1st of the 2nd half radio frames belongs to set { the actual downstream subframe of subframe 3, subframe 4, subframe 8, subframe 9}, i.e. subframe 8.
Embodiment two:
Determine that the method for the subframe residing for resource of the CSI-IM of flexible CSI-IM sub-frame set is: UE receives a sub-frame configuration of CSI-IM in Serving cell, by 2 one-period and the skews obtaining the sub-frame configuration of CSI-IM of tabling look-up, according to formula
bring the cycle of configuration and skew into subframe that formula can determine to meet above-mentioned CSI-IM sub-frame configuration, can determine half radio frames residing for this subframe further, the subframe position at the actual place of resource of CSI-IM is that the 1st in above-mentioned half radio frames belongs in the actual downstream subframe of flexible CSI-IM sub-frame set.
Such as, configuration to UE in two CSI-IM sub-frame set of Serving cell is: { subframe 0, subframe 1, subframe 5, subframe 6} and { subframe 3, subframe 4, subframe 8, subframe 9}, and according to the eIMTA relevant configuration in Serving cell, subframe 3, subframe 4, subframe 8 and subframe 9 are flexible sub-frame, so gather, { subframe 3, subframe 4, subframe 8, subframe 9} are flexible CSI-IM sub-frame set.If the cycle of CSI-IM is 5 milliseconds in Serving cell, the sub-frame offset of CSI-IM is 3, according to formula
the subframe that subframe 3 in radio frames 0 and subframe 8 meet the demands, subframe 3 is in the 1st half radio frames of radio frames 0, and subframe 8 is in the 2nd half radio frames of radio frames 0.Supposing that the actual TDD upstream and downstream of the physical layer reconfiguration information instruction radio frames 0 of Serving cell configures is configuration 1, { in subframe 3, subframe 4, subframe 8, subframe 9}, subframe 3 and subframe 8 are sub-frame of uplink to sub-frame set, the 1st actual downstream subframe in 1st half radio frames of radio frames 0 is subframe 4, the 1st actual downstream subframe in 2nd half radio frames of radio frames 0 is that subframe 9, CSI-IM is transmitted in subframe 4 and subframe 9.
In the mode of embodiment two, processing procedure is fairly simple, but compares optimization for the situation that the CSI-IM cycle is 5ms, not too optimizes for 10ms and above situation.
Embodiment three:
Another kind determines that the method for the subframe residing for resource of the CSI-IM of flexible CSI-IM sub-frame set is: UE receives the sub-frame configuration of CSI-IM in Serving cell, by 2 one-period and the skews obtaining the sub-frame configuration of CSI-IM of tabling look-up, according to formula
the logic subframe sequence number n at CSI-IM resource place can be determined, then formula F LOOR{n/min (10 is utilized, the CSI-IM cycle) }, obtain half radio frames corresponding to logic subframe sequence number or radio frames, if namely the cycle of CSI-IM is 5 milliseconds, what logic subframe was corresponding is half radio frames; If the cycle of CSI-IM is 10 milliseconds or is greater than 10 milliseconds, then what logic subframe was corresponding is radio frames.In Serving cell, the actual downstream subframe at CSI-IM resource place is first the actual downstream subframe belonging to flexible CSI-IM sub-frame set in above-mentioned half radio frames or radio frames.
Such as, configure and to UE in a sub-frame set of Serving cell be: { subframe 3, subframe 4, subframe 8, subframe 9}, if the cycle of the CSI-IM of Serving cell is 5 milliseconds, the sub-frame offset of CSI-IM is 2, in radio frames 0, according to formula
the subframe that subframe 2 in radio frames 0 and subframe 7 meet the demands, subframe 2 is in the 1st half radio frames of radio frames 0, and subframe 7 is in the 2nd half radio frames of radio frames 0.Suppose that in Serving cell, the actual TDD upstream and downstream configuration of physical layer reconfiguration information instruction radio frames 0 is configuration 2, { in subframe 3, subframe 4, subframe 8, subframe 9}, subframe is all actual descending sub frames to sub-frame set, the 1st actual downstream subframe in 1st half radio frames of radio frames 0 is subframe 3, the 1st actual downstream subframe in 2nd half radio frames of radio frames 0 is that subframe 8, CSI-IM is transmitted in subframe 3 and subframe 8.
If the cycle of CSI-IM is 10 milliseconds in Serving cell, the sub-frame offset of CSI-IM is 2, in radio frames 0, according to formula
the subframe that subframe 2 in radio frames 0 meets the demands.Suppose that in Serving cell, the actual TDD upstream and downstream configuration of physical layer reconfiguration information instruction radio frames 0 is configuration 3, { in subframe 3, subframe 4, subframe 8, subframe 9}, subframe 8, subframe 9 are actual descending sub frames to sub-frame set, the 1st descending sub frame in the radio frames of radio frames 0 is that subframe 8, CSI-IM is transmitted in the subframe 8 of radio frames 0.
Embodiment four:
Another determines that the method for the subframe residing for resource of the CSI-IM of flexible CSI-IM sub-frame set is: UE receives the sub-frame configuration of CSI-IM in Serving cell, by 2 one-period and the skews obtaining the sub-frame configuration of CSI-IM of tabling look-up, according to formula
the logic subframe sequence number n at CSI-IM resource place can be determined, and the actual downstream subframe position at CSI-IM resource place is [FLOOR (n/ Δ) × Δ, CEIL (n/ Δ) × Δ-1] belong to the 1st actual downstream subframe of flexible CSI-IM sub-frame set in scope, wherein Δ=min (10, CSI-IM cycle).
Such as, configuration to UE in two CSI-IM sub-frame set of Serving cell is: { subframe 0, subframe 1, subframe 5, subframe 6} and { subframe 3, subframe 4, subframe 8, subframe 9}, and according to the eIMTA relevant configuration in Serving cell, subframe 3, subframe 4, subframe 8 and subframe 9 are flexible sub-frame, so gather, { subframe 3, subframe 4, subframe 8, subframe 9} are flexible CSI-IM sub-frame set.If according to CSI-IM sub-frame configuration in Serving cell, the cycle of CSI-IM is 5 milliseconds, and the sub-frame offset of CSI-IM is 3, according to formula
can determine that the logic subframe sequence number at CSI-IM place in radio frames 0 is 3 and subframe 8.Suppose that in Serving cell, the actual TDD upstream and downstream configuration of physical layer reconfiguration information instruction radio frames 0 is configuration 1, then according to the method described above, in radio frames 0, the subframe position at the actual place of CSI-IM is subframe scope [0,4] and subframe scope [5,9] the 1st the actual downstream subframe that flexible CSI-IM gathers is belonged within, i.e. subframe 4 and subframe 9.
Determine in the mode of CSI-IM resource place subframe in above-described embodiment three and embodiment four, deal with a little complexity a bit, but for the CSI-IM cycle be 5ms and 10ms and above situation all compare optimize be suitable for.
Disclosed herein as well is a kind of interference measuring apparatus, may be used for implementing above-mentioned interference detecting method.Fig. 4 is the basic structure schematic diagram of interference measuring apparatus in the application.As shown in Figure 4, this equipment comprises: configuration receiving element, subframe determining unit and interferometry unit.
Wherein, configuration receiving element, for receiving the configuration information of base station, configuration information is used for configuration UE in Serving cell, is operated in TDD reconfiguration mode, and indicate at the most two the CSI-IM sub-frame set of UE in respective service community, and the CSI-IM sub-frame configuration corresponding with each CSI-IM sub-frame set and CSI-IM resource distribution.
Subframe determining unit, for according to CSI-IM sub-frame configuration corresponding to CSI-IM sub-frame set each in Serving cell and CSI-IM resource distribution, determines the subframe at the CSI-IM resource place in corresponding CSI-IM sub-frame set; Wherein, when described CSI-IM sub-frame set is the flexible CSI-IM sub-frame set of the subframe comprising the permission change of downstream transmission direction, further according to current actual TDD upstream and downstream configuration, in flexible CSI-IM sub-frame set, determine the subframe of an actual downstream subframe as CSI-IM resource place.
Interferometry unit, carries out interferometry in the subframe determined in subframe determining unit.
In the subframe determining unit of above-mentioned interference measuring apparatus, the mode in above-described embodiment one, two, three and four can be utilized, in flexible CSI-IM sub-frame set, determine the subframe of an actual downstream subframe as CSI-IM resource place.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within the scope of protection of the invention.
Claims (6)
1. the interference detecting method of channel in eIMTA system, comprising:
UE receives the configuration information of base station; Described configuration information is used for configuration UE in Serving cell, is operated in TDD reconfiguration mode, and indicate UE in two CSI-IM sub-frame set at the most of described Serving cell, and the CSI-IM sub-frame configuration corresponding with each CSI-IM sub-frame set and CSI-IM resource distribution;
UE, according to CSI-IM sub-frame configuration corresponding to each CSI-IM sub-frame set in described Serving cell and CSI-IM resource distribution, determines the subframe at the CSI-IM resource place in corresponding CSI-IM sub-frame set, and carry out interferometry in the subframe determined;
Wherein, when described CSI-IM sub-frame set is the flexible CSI-IM sub-frame set of the subframe comprising the permission change of downstream transmission direction, UE according to current actual TDD upstream and downstream configuration, determines the subframe at the CSI-IM resource place in described flexible CSI-IM sub-frame set further.
2. method according to claim 1, it is characterized in that, the CSI-IM sub-frame configuration that described basis flexible CSI-IM sub-frame set is corresponding and CSI-IM resource distribution, current actual TDD upstream and downstream configure, and determine that the subframe at the CSI-IM resource place in flexible CSI-IM sub-frame set comprises:
According to
determine the logic subframe sequence number n at the CSI-IM resource place in flexible CSI-IM sub-frame set; Wherein, n
ffor radio frame number, n
sfor timeslot number, T
cSI-RSand Δ
cSI-RSbe respectively the cycle in described CSI-IM resource distribution and skew,
represent downward floor operation, mod represents modulo operation;
According to current actual TDD upstream and downstream configuration, by the
(n mod5)+1 in individual half radio frames belongs to the actual downstream subframe that flexible CSI-IM gathers, as the subframe at the CSI-IM resource place in described flexible CSI-IM sub-frame set.
3. method according to claim 1, it is characterized in that, the CSI-IM sub-frame configuration that described basis flexible CSI-IM sub-frame set is corresponding and CSI-IM resource distribution, current actual TDD upstream and downstream configure, and determine that the subframe at the CSI-IM resource place in flexible CSI-IM sub-frame set comprises:
According to
determine the subframe meeting described CSI-IM sub-frame configuration, and determine half radio frames residing for corresponding subframe; Wherein, n
ffor radio frame number, n
sfor timeslot number, T
cSI-RSand Δ
cSI-RSbe respectively the cycle in described CSI-IM resource distribution and skew;
According to current actual TDD upstream and downstream configuration, the 1st in half radio frames determined is belonged to the actual downstream subframe that flexible CSI-IM gathers, as the subframe at the CSI-IM resource place in described flexible CSI-IM sub-frame set.
4. method according to claim 1, it is characterized in that, the CSI-IM sub-frame configuration that described basis flexible CSI-IM sub-frame set is corresponding and CSI-IM resource distribution, current actual TDD upstream and downstream configure, and determine that the subframe at the CSI-IM resource place in flexible CSI-IM sub-frame set comprises:
According to
determine the logic subframe sequence number n at the CSI-IM resource place in flexible CSI-IM sub-frame set; Wherein, n
ffor radio frame number, n
sfor timeslot number, T
cSI-RSand Δ
cSI-RSbe respectively the cycle in described CSI-IM resource distribution and skew,
represent downward floor operation, mod represents modulo operation;
According to
determine half radio frames that logic subframe sequence number n is corresponding or radio frames;
According to current actual TDD upstream and downstream configuration, will the 1st actual downstream subframe of flexible CSI-IM sub-frame set be belonged in half radio frames determined or radio frames, as the subframe at the CSI-IM resource place in described flexible CSI-IM sub-frame set.
5. method according to claim 1, it is characterized in that, the CSI-IM sub-frame configuration that described basis flexible CSI-IM sub-frame set is corresponding and CSI-IM resource distribution, current actual TDD upstream and downstream configure, and determine that the subframe at the CSI-IM resource place in flexible CSI-IM sub-frame set comprises:
According to
determine the logic subframe sequence number n at the CSI-IM resource place in flexible CSI-IM sub-frame set; Wherein, n
ffor radio frame number, n
sfor timeslot number, T
cSI-RSand Δ
cSI-RSbe respectively the cycle in described CSI-IM resource distribution and skew,
represent downward floor operation, mod represents modulo operation;
According to current actual TDD upstream and downstream configuration, by interval
the 1st actual downstream subframe of flexible CSI-IM sub-frame set is belonged to, as the subframe at the CSI-IM resource place in described flexible CSI-IM sub-frame set in scope; Wherein, Δ=min (10, T
cSI-RS),
represent the operation that rounds up.
6. the interference measuring apparatus of channel in eIMTA system, is characterized in that, comprises configuration receiving element, subframe determining unit and interferometry unit;
Described configuration receiving element, for receiving the configuration information of base station, described configuration information is used for configuration UE in Serving cell, is operated in TDD reconfiguration mode, and indicate UE in two CSI-IM sub-frame set at the most of described Serving cell, and the CSI-IM sub-frame configuration corresponding with each CSI-IM sub-frame set and CSI-IM resource distribution;
Described subframe determining unit, for according to CSI-IM sub-frame configuration corresponding to CSI-IM sub-frame set each in described Serving cell and CSI-IM resource distribution, determines the subframe at the CSI-IM resource place in corresponding CSI-IM sub-frame set; Wherein, when described CSI-IM sub-frame set is the flexible CSI-IM sub-frame set of the subframe comprising the permission change of downstream transmission direction, further according to current actual TDD upstream and downstream configuration, determine the subframe at the CSI-IM resource place in flexible CSI-IM sub-frame set;
Described interferometry unit, carries out interferometry in the subframe determined in subframe determining unit.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452712A (en) * | 2016-10-21 | 2017-02-22 | 珠海市魅族科技有限公司 | Communication method and device for FDD system based on flexible duplex, base station and terminal |
| WO2018202077A1 (en) * | 2017-05-05 | 2018-11-08 | 华为技术有限公司 | Interference measurement method and device |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452712A (en) * | 2016-10-21 | 2017-02-22 | 珠海市魅族科技有限公司 | Communication method and device for FDD system based on flexible duplex, base station and terminal |
| WO2018202077A1 (en) * | 2017-05-05 | 2018-11-08 | 华为技术有限公司 | Interference measurement method and device |
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