CN102612089A - Signal transmission method and device and coordinated transmission and reception system - Google Patents
Signal transmission method and device and coordinated transmission and reception system Download PDFInfo
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Abstract
The invention provides a signal transmission method, a signal transmission device and a coordinated transmission and reception system, wherein the method comprises the following steps: one or more coordinated cells in a coordinated set receive CoMP (coordinated multi-point transmission and reception) SRS(sounding reference signal) resource occupation information sent by one or more service cells corresponding to the coordinated cells; one or more coordinated cells determine resources for one or more coordinated cells to send SRS by use of the resource occupation information; and one or more coordinated cells send SRS on the resources. The signal transmission method provided by the invention improves data transmission and reception performance of the coordinated transmission and reception system.
Description
Technical field
The present invention relates to the communications field, in particular to signaling method, device and cooperative transmission system.
Background technology
In existing senior Long Term Evolution (Long Term Evolution-Advanced abbreviates LTE-A as) system, the performance difference of Cell Edge User and central user is still a great difficult problem.Though the use of multi-antenna technology can improve the data transfer rate of center of housing estate, but be difficult to improve the performance of cell edge.Cell edge is difficult to support the multithread transmission because signal interference ratio is lower.Therefore the antenna amount that adopts along with system increases; The performance of center of housing estate possibly improve constantly; But the performance of cell edge is difficult to improve; Also be difficult in cell edge in the operable high-order modulating of center of housing estate and use, cause the performance difference of center of housing estate and cell edge increasing.
Therefore, the LTE-A system will improve cell-edge performance as one of its main indexes.In order to improve the transmission rate of cell edge; Third generation partner program (3rd Generation Partnership Project; Abbreviate 3GPP as) release multipoint cooperative transmission (Coordinated Multi-Point Transmission and Reception abbreviates CoMP as) technology.It mainly improves the message transmission rate of edge customer through the cooperation of minizone, though the CoMP technology has been improved the complexity that the throughput of edge customer has also increased network system simultaneously.
In the CoMP system; A plurality of node cooperations are that same user provides service; In order to make evolution base station (Evolved NodeB abbreviates eNB as) make rational scheduling of resource, cooperation transmission subscriber equipment (CoMP User Equipment; Abbreviate COMP UE as) need to send reference signal (Sounding Reference Signal abbreviates SRS as) information measurement up channel state information to Serving cell and cooperation cell simultaneously.In addition at cooperation transmission time division duplex (CoMP Time Division Duplex; Abbreviate CoMP TDD as) in the system; SRS is as a kind of effective feedback scheme, and CoMP UE also needs to make eNB obtain the corresponding downstream channel condition information to Serving cell and cooperation cell transmission SRS simultaneously.But CoMP UE transmits in up link and tends to receive user's data or the interference of SRS signal in the cooperation cell, especially SRS signal interference when the SRS signal is given cooperation cell.
Because the cell-specific design of the SRS sequence set among the R8/9; The employed SRS basic sequence of UE in the neighbor cell is from the different sequences group; Possibly have different sequences length or on frequency, overlap; Make the cross correlation between the calling sequence bigger, disturb more seriously, cause CoMP UE seriously to descend to the SRS channel detection performance of its cooperation cell.
Fig. 1 is according to ul transmissions sketch map in the CoMP system of correlation technique, and as shown in Figure 1, the Serving cell of CoMP UE in up link is cell1, and cooperation cell is cell2.SRS detection performance for CoMP UE cell1 channel can be accepted, because be not have interference in the sub-district of LTE.But the SRS detection performance of CoMP UE cell2 channel then descends owing to receive strong interference greatly; Because the SRS signal of CoMP UE itself has experienced bigger decline from cell1 to cell2; More seriously be this CoMP UE with other disturb the employed SRS sequence of UE (UE1-4) from the different sequences group, possibly have different sequences length or exist component frequency to overlap, cause existing between them strong cross-correlation.
Problem to causing the data transmission performance of cooperative transmission system to descend owing to the interference of SRS signal in the correlation technique does not propose effective solution at present as yet.
Summary of the invention
Main purpose of the present invention is to provide a kind of data transmission method, Apparatus and system, to solve at least in the above-mentioned correlation technique because the SRS signal disturbs the data transmission performance decline problem that causes cooperative transmission system.
According to an aspect of the present invention; A kind of signaling method is provided, has comprised: the one or more cooperation cell in the cooperation set receive the resource occupation information of the cooperation transmission reference signal CoMP SRS that sends from the corresponding Serving cell of one or more cooperation cell; One or more cooperation cell use resource occupation information to confirm that one or more cooperation cell are used to send the resource of reference signal SRS; One or more cooperation cell are sent SRS on resource.
Further, the one or more cooperation cell resource of using the resource occupation information to confirm that one or more cooperation cell are used to send reference signal SRS comprises: it is the resource that is used to send SRS that one or more cooperation cell are selected the nonoverlapping resource of resource with the resource occupation information indication of CoMP SRS.
Further, the resource occupation information that receives the cooperation transmission CoMP reference signal SRS that sends from the corresponding Serving cell of one or more cooperation cell of the one or more cooperation cell in the cooperation set comprises: one or more cooperation cell receive one of the following information of sending from the corresponding Serving cell of one or more cooperation cell: the Physical Resource Block PRB of the CoMP SRS of Serving cell uses information and/or subframe to use information; The user class parameter information of the CoMP SRS of Serving cell.
According to a further aspect in the invention, a kind of signaling method is provided also, has comprised: comprising: Serving cell is confirmed the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission; Serving cell sends to its corresponding cooperation cell with resource occupation information and is used for cooperation cell transmission SRS.
Further, Serving cell confirms that the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission comprises: Serving cell confirms that one of in the following manner the PRB in the resource occupation information uses information and/or subframe to use information: Serving cell uses the result who in the given time the CoMP SRS occurrence frequency on PRB and/or the subframe is added up to confirm that PRB uses information and/or subframe to use information; Serving cell uses in current subframe during as n, and the information that the N continuous sub-frame that Serving cell begins from the n+k subframe on X2 interface is sent CoMP SRS is that PRB uses information and/or subframe to use information, and wherein, n and k are 0 or positive integer, and N is a positive integer.
Further, Serving cell sends to its corresponding cooperation cell with resource occupation information and is used for cooperation cell and sends SRS and comprise: Serving cell sends to its corresponding cooperation cell based on varigrained subband (subband) mode with the PRB use information of resource occupation information; Serving cell sends one of in the following manner the user class parameter information in the resource occupation information: the parameter information that once sends the user; The independent parameter information that sends unique user.
Further, Serving cell sends to its corresponding cooperation cell through periodic mode or triggering mode with resource occupation information.
According to another aspect of the invention, a kind of signaling method is provided also, has comprised: the Serving cell in the cooperation set is confirmed the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission; Serving cell sends resource occupation information through the X2 interface signaling to its corresponding cooperation cell and is used for cooperation cell transmission reference signal SRS.
Further; Serving cell is used for cooperation cell transmission SRS through the X2 interface signaling to its corresponding cooperation cell transmission resource occupation information and comprises: IE item CoMP SRS in PRB Indication IE and/or the CoMP SRS in Subframe Indication IE of Serving cell through being provided with on the LOAD INFORMATION message of X2 interface, send PRB use information and/or subframe use information to its corresponding cooperation cell.
Further; Serving cell sends resource occupation information through the X2 interface signaling to its corresponding cooperation cell and comprises: the IE item CoMP SRS ue-specific Information Indication IE of Serving cell through being provided with on the LAOD INFORMATION message of X2 interface, send the user class parameter information in the resource occupation information to its corresponding cooperation cell.
In accordance with a further aspect of the present invention; A kind of signaling sending device also is provided; Be applied to cooperation cell, comprise: receiver module is used to receive the resource occupation information from the cooperation transmission reference signal CoMP SRS of the corresponding Serving cell transmission of the cooperation cell at its place; First determination module is used to use resource occupation information to confirm that one or more cooperation cell are used to send the resource of reference signal SRS; First sending module is used on resource, sending SRS.
Further, first determination module, the nonoverlapping resource of resource that is used to select to indicate with the resource occupation information of CoMP SRS is the resource that is used to send SRS.
Further, receiver module, be used to receive one of the following information of sending from the corresponding Serving cell of the cooperation cell at its place: the Physical Resource Block PRB of the CoMP SRS of Serving cell uses information and/or subframe to use information; The user class parameter information of the CoMP SRS of Serving cell.
According to a further aspect in the invention, a kind of signaling sending device is provided also, has been applied to Serving cell, having comprised: second determination module is used for confirming the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission; Second sending module is used for that resource occupation information is sent to its corresponding cooperation cell and is used for cooperation cell transmission SRS.
Further; Second determination module one of is used in the following manner confirming that the PRB of resource occupation information uses information and/or subframe to use information: use the result who in the given time the CoMP SRS occurrence frequency on PRB and/or the subframe is added up to confirm that PRB uses information and/or subframe to use information; Use in current subframe during as n, the information of the CoMP SRS of Serving cell on the N continuous sub-frame that begins from the n+k subframe of sending on the X2 interface is that PRB uses information and/or subframe to use information, and wherein, n and k are 0 or positive integer, and N is a positive integer.
According to another aspect of the invention, a kind of cooperative transmission system is provided also, has comprised: one or more above-mentioned signaling sending device (being applied to Serving cell) and one or more signaling sending device (being applied to cooperation cell).
In accordance with a further aspect of the present invention, a kind of data transmission device is provided also, has been applied to Serving cell, having comprised: the 3rd determination module is used for confirming the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission; The 3rd sending module is used for sending resource occupation information through the X2 interface signaling to its corresponding cooperation cell and is used for cooperation cell transmission reference signal SRS.
Further; The 3rd sending module comprises: the 4th sending module; Be used for IE item CoMP SRS in PRB Indication IE and/or CoMP SRS in Subframe Indication IE, send PRB to its corresponding cooperation cell and use information and/or subframe to use information through setting on the LOAD INFORMATION message of X2 interface.
Further; The 3rd sending module comprises: the 5th sending module; Be used for IE item CoMP SRS ue-specific Information Indication IE, send the user class parameter information to its corresponding cooperation cell through setting on the LAOD INFORMATION message of X2 interface.
According to another aspect of the invention, a kind of cooperative transmission system is provided also, has comprised: one or more cooperation cell and one or more above-mentioned signaling sending device (being applied to Serving cell).
Through the present invention; Adopt cooperation cell to receive the resource occupation information of the CoMP SRS of its corresponding Serving cell transmission; On the resource of confirming according to this occupied information, send SRS; Solution is known clearly because the mutual interference mutually that the SRS of cooperation cell and Serving cell transmission causes in the CoMP set causes the poor problem of cooperative transmission system data transmission performance, thereby improved the performance of the transfer of data of cooperative transmission system.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is according to ul transmissions sketch map in the CoMP system of correlation technique;
Fig. 2 is the first pass figure according to the signaling method of the embodiment of the invention;
Fig. 3 is second flow chart according to the signaling method of the embodiment of the invention;
Fig. 4 is the 3rd flow chart according to the signaling method of the embodiment of the invention;
Fig. 5 is the mutual sketch map that uses information according to CoMP SRS resource in the CoMP communication system of the embodiment of the invention;
Fig. 6 is the structured flowchart of the signaling sending device (being applied to cooperation cell) according to the embodiment of the invention;
Fig. 7 is first structured flowchart of the signaling sending device (being applied to Serving cell) according to the embodiment of the invention;
Fig. 8 is first structured flowchart according to the cooperative transmission system of the embodiment of the invention;
Fig. 9 is second structured flowchart of the signaling sending device (being applied to Serving cell) according to the embodiment of the invention;
Figure 10 is preferred second structured flowchart of the signaling sending device (being applied to Serving cell) according to the embodiment of the invention; And
Figure 11 is second structured flowchart according to the cooperative transmission system of the embodiment of the invention.
Embodiment
Below with reference to accompanying drawing and combine embodiment, specify the present invention.
Hereinafter will and combine embodiment to specify the present invention with reference to accompanying drawing.Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.
Present embodiment provides a kind of signaling method, and Fig. 2 is the first pass figure according to the signaling method of the embodiment of the invention, and is as shown in Figure 2, and this method comprises:
Step S202: the one or more cooperation cell in the cooperation set receive the resource occupation information of the CoMP SRS that sends from the corresponding Serving cell of one or more cooperation cell.
Step S204: one or more cooperation cell use resource occupation information to confirm that one or more cooperation cell are used to send the resource of reference signal SRS.
Step S206: one or more cooperation cell are sent SRS on resource.
Pass through above-mentioned steps; Cooperation cell receives the resource occupation information of the CoMP SRS of its corresponding Serving cell transmission; On the resource of confirming according to this occupied information, send SRS; Avoided because the interference that the SRS that cooperation cell is sent Serving cell in the CoMP set causes causes the poor problem of cooperative transmission system data transmission performance, thereby improved the performance of the transfer of data of cooperative transmission system.
Preferably, one that faces step S204 under preferred embodiment describes.The nonoverlapping resource of resource that one or more cooperation cell are selected to indicate with the resource occupation information of CoMP SRS is the resource that is used to send SRS.Through the preferred embodiment, avoided cooperation cell to adopt the resource identical to remove to send SRS with Serving cell, improved SRS channel detection performance.
Preferably, one that faces step S202 under preferred embodiment describes.One or more cooperation cell receive one of the following information of sending from the corresponding Serving cell of one or more cooperation cell: the Physical Resource Block PRB of the CoMP SRS of Serving cell uses information and/or subframe to use information; The user class parameter information of the CoMP SRS of Serving cell.Through the preferred embodiment, cooperation cell gets access to use information and/or the subframe of the CoMP SRS of Serving cell and uses information; The user class parameter has improved cooperation cell and has confirmed that it sends the flexibility of SRS resource.
Present embodiment provides a kind of signaling method, and Fig. 3 is second flow chart according to the signaling method of the embodiment of the invention, and is as shown in Figure 3, and this method comprises:
Step S302: Serving cell is confirmed the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission;
Step S304: Serving cell sends to its corresponding cooperation cell with resource occupation information and is used for cooperation cell transmission SRS.
Pass through above-mentioned steps; Serving cell confirms that it sends the resource occupation information of CoMP SRS; And this information sent to its corresponding cooperation cell; Be used for this corresponding cooperation cell and use the resource occupation information of this Serving cell to carry out the transmission of the SRS of self, avoided because the interference that the SRS that cooperation cell is sent Serving cell in the CoMP set causes causes the poor problem of cooperative transmission system data transmission performance, thereby improved the performance of the transfer of data of cooperative transmission system.
Preferably, a preferred implementation in the face of step S302 under describes.Serving cell confirms that one of in the following manner the PRB in the resource occupation information uses information and/or subframe to use information: Serving cell uses the result who in the given time the CoMP SRS occurrence frequency on PRB and/or the subframe is added up to confirm that PRB uses information and/or subframe to use information; Serving cell uses in current subframe during as n, and the information of the CoMP SRS of Serving cell on the N continuous sub-frame that begins from the n+k subframe of sending on the X2 interface is that PRB uses information and/or subframe to use information, and wherein, n and k are 0 or positive integer, and N is a positive integer.Through the preferred embodiment, improved Serving cell and confirmed that its PRB uses information and/or subframe to use the flexibility and the accuracy of information.
Preferably, a preferred implementation in the face of step S304 under describes.Serving cell sends to its corresponding cooperation cell based on varigrained subband subband mode with the PRB use information in the resource occupation information; Serving cell sends one of in the following manner the user class parameter information in the resource occupation information: once send user's parameter information, promptly all users' SRS parameter information is bound transmission; The independent parameter information that sends unique user, the i.e. independent SRS parameter information that sends separately between unique user.Through the preferred embodiment, improved the flexibility of Serving cell transmission resource occupation information.
Preferably, Serving cell sends to its corresponding cooperation cell through periodic mode or triggering mode with resource occupation information.Through the preferred embodiment, improved the flexibility of Serving cell transmission resource occupation information.
Present embodiment provides a kind of signaling method, and Fig. 4 is the 3rd flow chart according to the signaling method of the embodiment of the invention, and is as shown in Figure 4, and this method comprises:
Step S402: the Serving cell in the cooperation set is confirmed the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission.
Step S404: Serving cell sends resource occupation information through the X2 interface signaling to its corresponding cooperation cell and is used for cooperation cell transmission SRS.
Pass through above-mentioned steps; Serving cell confirms that it sends the resource occupation information of CoMP SRS; And this information is sent to its corresponding cooperation cell through the X2 interface signaling carry out the transmission of SRS; Avoided because the interference that the SRS that cooperation cell is sent Serving cell in the CoMP set causes causes the poor problem of cooperative transmission system data transmission performance, thereby improved the performance of the transfer of data of cooperative transmission system.
Preferably, a preferred implementation in the face of step S404 under describes.IE item CoMP SRS in PRB Indication IE and/or the CoMP SRS in Subframe Indication IE of Serving cell through being provided with on the LOAD INFORMATION message of X2 interface sends PRB to its corresponding cooperation cell and uses information and/or subframe to use information.Through the preferred embodiment, Serving cell sends PRB through existing signaling and uses information and/or subframe to use information, has reduced signaling traffic load.
Preferably, a preferred implementation in the face of step S404 under describes.The IE item CoMP SRS ue-specific Information Indication IE of Serving cell through being provided with on the LAOD INFORMATION message of X2 interface sends the user class parameter information in the resource occupation information to its corresponding cooperation cell.Through the preferred embodiment, Serving cell sends the user class parameter information through existing signaling, has reduced signaling traffic load.
Embodiment one
Present embodiment provides signaling method, is used for carrying out CoMP system minizone SRS interference coordination, and present embodiment has combined the foregoing description and preferred implementation wherein.
The method of present embodiment comprises: the mutual CoMP SRS resource occupation information separately in each sub-district in the cooperation set, coordinate the SRS resource distribution of this sub-district each other based on this information.
Preferably, each Serving cell uses information to the resource that its cooperation cell is sent this sub-district CoMP SRS, and preferential the selection was used for this sub-district SRS transmission with the resource that the indicated resource of this information is not conflicted after cooperation cell received this information.
Preferably, each Serving cell can notify the PRB of this sub-district CoMP SRS to use information and/or subframe to use information to its cooperation cell notice the time.
Preferably, each Serving cell also can directly be notified the user class parameter information of this sub-district CoMP SRS to its cooperation cell notice the time.
Preferably, PRB use the information obtain manner of information and subframe use information can be based on statistical or based on the n+k mode.
Preferably, PRB uses information when notice, can be based on varigrained subband mode.
Preferably, the user class parameter information of CoMP SRS can be once to notify a plurality of users or each user independently to notify respectively when notice.
Preferably, the information advice method can be periodic or trigger-type.
Embodiment two
Present embodiment provides signaling method, is used for carrying out the signaling that CoMP system minizone CoMP SRS resource is used information, and this embodiment has combined the foregoing description and preferred implementation wherein.
Sending method in the present embodiment comprises: each Serving cell in the CoMP system notifies this sub-district CoMP SRS resource to use message through the X2 interface signaling to cooperation cell.
Preferably, a preferred implementation in the face of said method under describes.Each Serving cell can increase an IE item CoMP SRS in PRB Indication IE or CoMP SRS in Subframe Indication IE newly in the LOAD of X2 interface INFORMATION message, be used for notifying to cooperation cell PRB occupied information or the subframe occupied information of the CoMP SRS of this sub-district.
Preferably, a preferred implementation in the face of said method under describes.Each Serving cell also can increase two IE item CoMP SRS in PRB Indication IE and CoMP SRS in Subframe Indication IE newly in the LOAD of X2 interface INFORMATION message, be used for notifying simultaneously to cooperation cell PRB occupied information and the subframe occupied information of the CoMP SRS of this sub-district.
Preferably, a preferred implementation in the face of said method under describes.Each Serving cell also can increase an IE item CoMP SRS ue-specific Information Indication IE newly in the LAOD of X2 interface INFORMATION message, be used for notifying to cooperation cell the CoMP user's of this sub-district UE-specific SRS parameter information.
Through the preferred embodiment, realized adopting existing signaling transmitting SRS resource occupation information, reduce signaling traffic load, and reduced R&D costs.
Embodiment three
Present embodiment provides a kind of signaling method, is used for carrying out CoMP system minizone SRS interference coordination.Present embodiment has combined above-mentioned preferred embodiment and preferred implementation wherein.
Fig. 5 is the mutual sketch map that uses information according to CoMP SRS resource in the CoMP communication system of the embodiment of the invention, and is as shown in Figure 5, and this system comprises one or more Serving cells and an one or more cooperation cell in the cooperation set.
Wherein, Cell 1, Cell 2 and Cell 3 are cooperation cell set, and the Serving cell of CoMP UE1 is Cell 1, and the Serving cell of CoMP UE2 is Cell 2, and the Serving cell of CoMP UE3 is Cell 3.According to the present invention, CoMP UE1 need send its SRS resource operating position in Cell 1 to its cooperation cell Cell 2 and Cell 3 so; CoMP UE2 need send its SRS resource operating position in Cell 2 to its cooperation cell Cell 1 and Cell 3; CoMP UE3 need send its SRS resource operating position in Cell 3 to its cooperation cell Cell 1 and Cell 2.Therefore realized that the CoMP SRS resource between each sub-district is used the mutual of information in the cooperation set.
The method of present embodiment may further comprise the steps:
Step 1: Serving cell sends the resource occupation information of this sub-district CoMP SRS to its cooperation cell;
Step 2: cooperation cell is according to the resource occupation information that receives, and the preferential resource allocation of selecting not conflict with the indicated resource of this information is used for the SRS transmission for this community user.
Preferably, use the mutual of information for the CoMP SRS resource of each sub-district in the cooperation set in the step 1, that is, the resource occupation information that Serving cell sends this sub-district CoMP SRS to its cooperation cell, present embodiment provides following two kinds of information interaction modes:
Mode 1: the PRB of mutual CoMP SRS uses information and/or subframe to use information
This mode has related to and need carry out the mutual information content, information obtain manner, and information advice method in each minizone of cooperation set.The information content promptly comprises PRB operating position and/or the subframe operating position of CoMP SRS, and the information obtain manner can be based on the mode of statistics or based on the mode of n+k, the information advice method can be periodic or trigger-type.
Preferably, the mutual information content can increase two information words (IE, Information Element) newly in the LOAD of X2 interface INFORMATION message, is respectively applied for that the PRB that notifies this sub-district CoMP SRS takies situation and subframe takies situation.
When notice PRB takies situation, can use 1bit to notify to each or every several PRB continuously, represent the occupied 2 kinds of situation of PRB respectively, for example: do not have CoMP SRS to send on 0 this PRB of expression, have CoMP SRS to send on 1 this PRB of expression.Also can use 2bits to notify, represent the occupied 4 kinds of situation of PRB respectively, for example: do not have CoMP SRS on 00 this PRB of expression each or every several PRB continuously; On 01 this PRB of expression CoMP SRS and comb=0 are arranged; On 10 these PRB of expression CoMP SRS and comb=1 are arranged; There are CoMP SRS and comb=0 and 1 all occupied on 11 these PRB of expression.
When notice subframe operating position, each subframe can be notified with 1bit, representes the occupied two kinds of situation of subframe respectively, for example: do not have CoMP SRS to send on 0 this subframe of expression; There is CoMP SRS to send on 1 this subframe of expression.
Preferably, the following dual mode of information obtain manner:
(1) based on the mode of adding up: in longer a period of time, CoMP SRS occurrence frequency on each PRB or the subframe is added up, judged that with the mode of statistics which PRB or subframe belong to SRS high capacity resource.
(2) based on the mode of n+k: when current subframe is n; PRB operating position and the subframe operating position of the CoMP SRS of this sub-district on the N continuous sub-frame that transmission n+k subframe on the X2 interface begins; K is a nonnegative integer, and the value of N is at least greater than the maximum delay (being 20ms at present) of X2 interface.
Preferably, the information advice method comprises following two kinds:
(1) the periodic notice is meant Serving cell whenever sends the CoMP SRS of a deuterzooid sub-district at regular intervals to cooperation cell resource operating position.The value of cycle T at least should be greater than the maximum delay of X2 interface; The value of T can not be too big, otherwise can not realize the interchange of CoMP SRS resource information timely and effectively; Can not be too little, otherwise cause X2 interface too busy; Preferably not being the integral multiple of UE detect cycle, all is the same otherwise possibly cause notifying the PRB operating position at every turn.
(2) trigger-type notice only is meant to change or cooperation cell when requiring this sub-district to send CoMP SRS resource distribution ability lastest imformation on X2 interface when high-rise CoMP SRS resource distribution to this sub-district.
Mode 2: the user class parameter information of mutual CoMP SRS
This mode need be at mutual this sub-district CoMP user's in each minizone of cooperation set UE-specific SRS parameter information, promptly the mutual information content comprise following one or several UE-specific SRS parameter:
The bandwidth of SRS (srs-Bandwidth) is set to: ENUMERATED{bw0, bw1, bw2, bw3};
The bandwidth of frequency domain Hopping (srs-HoppingBandwidth) is set to: ENUMERATED{hbw0, hbw1, hbw2, hbw3};
The Physical Resource Block original position (freqDomainPosition) of distributing is set to: NTEGER (0..23);
SRS transmission cycle (single or up to not enabling) (duration), is set to BOOLEAN; :
SRS configuration index (srs-ConfigIndex) has been represented cycle and initial subframe, is set to INTEGER (0..1023):
The pectinate texture (transmissionComb) of transmission (the odd carriers position, perhaps, the even carriers position), be set to INTEGER (0..1);
The cyclic shift amount (cyclicShift) of sequence is set to ENUMERATED{cs0, cs1, cs2, cs3, cs4, cs5, cs6, cs7}.
Need to prove that the setting of SRS parameter is not limited to above-mentioned parameter and above-mentioned setting, it can specifically be provided with according to actual needs.
The mutual information content also possibly comprise SRS parameters such as carrier wave indication territory (Carrier Indication Field abbreviates CIF as) (being used to indicate a parameter of carrier component) and UE number of antennas in future.
Need to prove; Because the SRS parameter is basically all disposed by high level; So advice method can adopt the trigger-type notice; Promptly have CoMP user to insert or high-rise UE-specific parameter configuration to CoMP SRS changes or cooperation cell when requiring Serving cell to send CoMP SRS information when this sub-district, this sub-district UE-specific SRS parameter information will be upgraded to its cooperation cell in this sub-district.In addition, also can adopt the periodic notice, promptly regularly notify this sub-district CoMP SRS information to cooperation cell.
Preferably; Serving cell can increase an IE newly in the LOAD of X2 interface INFORMATION message; Once notify or upgrade all CoMP users' of this sub-district UE-specific parameter, the content of this IE comprises number of users NumofUser and each user's UE-specific SRS parameter information; Also can an IE be set respectively to each user; This IE content can comprise ID; The priority that this user's UE-specific parameter information and user SRS information are sent etc.; Relatively come to confirm priority level according to cycle of each user and detective bandwidth are isoparametric, the user that priority level is high can preferentially send its SRS parameter information.
Reduced the interference that CoMP SRS receives SRS in the cooperation cell through this preferred embodiment.
Embodiment four
Present embodiment has offered a kind of signaling method; Present embodiment has combined the foregoing description and preferred implementation wherein; In this embodiment; The RPB of the cooperation set mutual CoMP SRS in each sub-district uses information and subframe to use information, and the information obtain manner is based on the mode of n+k, and the information advice method adopts the periodic notice.
In the present embodiment, suppose that announcement period is T, promptly Serving cell is notified a deuterzooid sub-district CoMP SRS resource occupation information to the per interval T of its cooperation cell, described condition before the value of cycle T satisfies.
Through three kinds of modes signaling method is elaborated below.
(1) mode one: the PRB operating position
During the N continuous sub-frame that eNB begins the n+k subframe on each sub-frame the CoMP SRS on each PRB take situation and directly send through X2 interface.If on the promptly a certain subframe, do not have CoMP SRS on i the PRB, then b
I0b
I1=00; If on i the PRB CoMP SRS and comb=0 are arranged, then b
I0b
I1=01; If on i the PRB CoMP SRS and comb=1 are arranged, then b
I0b
I1=10; If have CoMP and comb=0 and 1 all occupied on i the PRB, then b
I0b
I1=11.
Its IE form that specifically on X2 interface, increases newly is as shown in table 1.
Table 1 IE form signal table one
(2) mode two: the subframe operating position
ENB notifies the CoMP SRS on the T sub-frame that this sub-district begins from subframe n+k to send situation to cooperation cell.I (on the sub-frame of n+k≤i≤n+k+T-1), if there is CoMP SRS to send, a then
i=1; There is not CoMP SRS to send else if, then a
i=0.
Its IE form that specifically on X2 interface, increases newly is as shown in table 2.
Table 2 IE form signal table two
Embodiment five
Present embodiment has offered a kind of signaling method; Present embodiment has combined the foregoing description and preferred implementation wherein; In the present embodiment; The RPB of the cooperation set mutual CoMP SRS in each sub-district uses information and subframe to use information, and the information obtain manner is based on the mode of statistics, and the information advice method adopts the trigger-type notice.
Suppose that when subframe n change has taken place in high-rise configuration to CoMP SRS.Service cell eNB need be added up CoMP SRS occupation condition in this time period to n+t (t＞X2 interface maximum delay and t＞＞0) at subframe n; Which is judged is CoMP SRS high capacity resource, and these high capacity resource informations are sent to its cooperation cell.
Through three kinds of modes signaling method is elaborated below.
(1) mode one: the 1PRB operating position
ENB will add up this sub-district subframe n each PRB in the subframe n+t and go up CoMP SRS and take situation: the frequency of comb=0 is counted N0, and the number of times of comb=1 is counted N1, and comb=0 and 1 frequency of occupied situation simultaneously counts N2.
Suppose that it is b that i PRB (1≤i≤110) goes up corresponding 2bits
I0b
I1If N0=N1=N2=0, explaining does not have CoMP SRS to send on this PRB, so b
I0b
I1=00; Otherwise, the size of comparison N0, N1 and N2, if N0 maximum and N0＞＞N2, b
I0b
I1=01; If N1 maximum and N1＞＞N2, b
I0b
I1=10; Otherwise b
I0b
I1=11.
Its IE form that specifically on X2 interface, increases newly is as shown in table 3.
Table 3 IE form signal table three
(2) mode two subframe operating positions
ENB will add up this sub-district subframe n CoMP SRS frequency on every N sub-frame in the subframe n+t, count P respectively
1, P
2..., P
N
Suppose that corresponding 1bit is a on the interior i sub-frame of current period T
iWith P
i(1≤i≤T) compare with a threshold value P respectively, if P
i＞P thinks that this subframe is a CoMP SRS high capacity subframe, a
i=1; Otherwise think that this subframe is the low load subframe of CoMP SRS, a
i=0.P is a nonnegative integer.
Its IE form that specifically on X2 interface, increases newly is as shown in table 4.
Table 4 IE form signal table four
Embodiment six
Present embodiment has offered a kind of signaling method; Present embodiment has combined the foregoing description and preferred implementation wherein; In the present embodiment, cooperation set mutual this sub-district CoMP user's in each sub-district UE-specific SRS parameter information, the information advice method adopts the trigger-type notice.
If once notify a plurality of CoMP user UE-specific SRS parameter informations, suppose that this sub-district active user's number is NumofUser, it is as shown in table 5 then can on X2 interface, to increase the IE form newly.
Table 5 IE form signal table five
If notify each CoMP user's UE-specific SRS parameter information respectively, suppose that the maximum open ended numbers of users in this sub-district are maxNumofUser, it is as shown in table 6 then can on X2 interface, to increase the IE form newly.
Table 6 IE form signal table six
Present embodiment provides a kind of signaling sending device; Be applied to cooperation cell; Fig. 6 is the structured flowchart of the signaling sending device (being applied to cooperation cell) according to the embodiment of the invention, and device comprises: receiver module 62, the first determination modules 64; First sending module 66 is elaborated in the face of said structure down.
Receiver module 62 is used to receive the resource occupation information from the cooperation transmission reference signal CoMP SRS of the corresponding Serving cell transmission of the cooperation cell at its place;
First determination module 64 is connected to receiver module 62, and the resource occupation information that is used to use receiver module 62 to receive confirms that one or more cooperation cell are used to send the resource of reference signal SRS;
First sending module 66 is connected to first determination module 64, is used on the resource that first determination module 64 is confirmed, sending SRS.
Preferably, first determination module 64, the nonoverlapping resource of resource that is used to select to indicate with the resource occupation information of CoMP SRS is the resource that is used to send SRS.
Preferably, receiver module 62, be used to receive one of the following information of sending from the corresponding Serving cell of the cooperation cell at its place: the Physical Resource Block PRB of the CoMP SRS of Serving cell uses information and/or subframe to use information; The user class parameter information of the CoMP SRS of Serving cell.
Present embodiment provides a kind of signaling sending device; Be applied to Serving cell; Fig. 7 is first structured flowchart of the signaling sending device (being applied to Serving cell) according to the embodiment of the invention, and as shown in Figure 7, this device comprises: second determination module 72; Second sending module 74 is elaborated in the face of said structure down.
Second determination module 72 is used for confirming the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission;
Second sending module 74 is connected to second determination module 72, is used for that the resource occupation information that second determination module 72 is confirmed is sent to its corresponding cooperation cell and is used for cooperation cell transmission SRS.
Preferably; Second determination module 72 one of is used in the following manner confirming that the PRB of resource occupation information uses information and/or subframe to use information: use the result who in the given time the CoMP SRS occurrence frequency on PRB and/or the subframe is added up to confirm that PRB uses information and/or subframe to use information; Use in current subframe during as n, the information of the CoMP SRS of the N continuous sub-frame that begins from the n+k subframe that Serving cell sends on X2 interface is that PRB uses information and/or subframe to use information, and wherein, n and k are 0 or positive integer, and N is a positive integer.
Present embodiment provides a kind of cooperative transmission system; Fig. 8 is first structured flowchart according to the cooperative transmission system of the embodiment of the invention; As shown in Figure 8; This method has comprised one or more above-mentioned signaling sending device (being applied to Serving cell) 2 and one or more signaling sending device (being applied to cooperation cell) 4, and the structure of above-mentioned two kinds of devices is described in detail in Fig. 6 and Fig. 7, repeats no more at this.
Present embodiment provides a kind of signaling sending device; Be applied to Serving cell; Fig. 9 is second structured flowchart of the signaling sending device (being applied to Serving cell) according to the embodiment of the invention; As shown in Figure 9, this device comprises: the 3rd determination module 92 and the 3rd sending module 94 are described in detail in the face of said structure down:
The 3rd determination module 92 is used for confirming the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission; The 3rd sending module 94 is connected to the 3rd determination module 92, is used for sending the 3rd determination module 92 definite resource occupation information through the X2 interface signaling to its corresponding cooperation cell and is used for cooperation cell transmission reference signal SRS.
Figure 10 is preferred second structured flowchart of the signaling sending device (being applied to Serving cell) according to the embodiment of the invention; Shown in figure 10; The 3rd sending module 94 comprises: the 4th sending module 942 and the 5th sending module 944 are elaborated in the face of said structure down.
The 4th sending module 942; Be used for IE item CoMP SRS in PRB Indication IE and/or CoMP SRS in Subframe Indication IE, send PRB to its corresponding cooperation cell and use information and/or subframe to use information through setting on the LOAD INFORMATION message of X2 interface.
The 5th sending module 944 is used for the IE item CoMP SRS ue-specific Information Indication IE through setting on the LAOD INFORMATION message of X2 interface, sends the user class parameter information to its corresponding cooperation cell.
Present embodiment provides a kind of cooperative transmission system; Figure 11 is second structured flowchart according to the cooperative transmission system of the embodiment of the invention; Shown in figure 11; This system comprises: one or more cooperation cell 6 and one or more above-mentioned signaling sending device (being applied to Serving cell) 5, and signaling sending device (being applied to Serving cell) 5 is shown in Fig. 9 or 10, and its structure repeats no more at this.
Pass through the foregoing description; A kind of signaling method, device and cooperative transmission system are provided; Be used for carrying out CoMP system minizone SRS interference coordination; This method is used information through the CoMP SRS running time-frequency resource that Serving cell sends this sub-district to its cooperation cell, makes the cooperation cell base station distribute running time-frequency resource for this community user according to this information.Owing to can indicate the resource operating position of CoMP SRS in the Serving cell in the running time-frequency resource use information; The SRS running time-frequency resource that cooperation cell is distributed can avoid the use of as far as possible with said running time-frequency resource use information in the indicated afoul resource of resource; Reduce the SRS that CoMP SRS in the CoMP system receives cooperation cell and disturbed, thereby improved the performance of cooperative transmission system transfer of data.
Obviously; It is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize that they can concentrate on the single calculation element with the general calculation device; Perhaps be distributed on the network that a plurality of calculation element forms; Alternatively, they can be realized with the executable program code of calculation element, carried out by calculation element thereby can they be stored in the storage device; Perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. a signaling method is characterized in that, comprising:
One or more cooperation cell in the cooperation set receive the resource occupation information of the cooperation transmission reference signal CoMP SRS that sends from the corresponding Serving cell of said one or more cooperation cell;
Said one or more cooperation cell uses said resource occupation information to confirm that said one or more cooperation cell is used to send the resource of reference signal SRS;
Said one or more cooperation cell is sent SRS on said resource.
2. method according to claim 1 is characterized in that, the resource that said one or more cooperation cell use said resource occupation information to confirm that said one or more cooperation cell is used to send reference signal SRS comprises:
The nonoverlapping resource of resource that said one or more cooperation cell is selected to indicate with the resource occupation information of said CoMP SRS is the said resource that is used to send SRS.
3. method according to claim 1; It is characterized in that the resource occupation information that the one or more cooperation cell in the said cooperation set receive the cooperation transmission CoMP reference signal SRS that sends from the corresponding Serving cell of said one or more cooperation cell comprises:
Said one or more cooperation cell receives one of the following information of sending from the corresponding Serving cell of said one or more cooperation cell:
The Physical Resource Block PRB of the said CoMP SRS of said Serving cell uses information and/or subframe to use information;
The user class parameter information of the said CoMP SRS of said Serving cell.
4. a signaling method is characterized in that, comprising:
Serving cell is confirmed the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission;
Said Serving cell sends to its corresponding cooperation cell with said resource occupation information and is used for said cooperation cell transmission SRS.
5. method according to claim 4 is characterized in that, said Serving cell confirms that the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission comprises:
Said Serving cell confirms that one of in the following manner the PRB in the said resource occupation information uses information and/or said subframe to use information:
Said Serving cell uses the result who in the given time the said CoMP SRS occurrence frequency on PRB and/or the subframe is added up to confirm that said PRB uses information and/or said subframe to use information;
Said Serving cell uses in current subframe during as n; The information of the said CoMP SRS of the N continuous sub-frame that begins from the n+k subframe that said Serving cell sends on X2 interface is that said PRB uses information and/or said subframe to use information; Wherein, n and k are 0 or positive integer, and N is a positive integer.
6. method according to claim 4 is characterized in that, said Serving cell sends to its corresponding cooperation cell with said resource occupation information and is used for said cooperation cell and sends SRS and comprise:
Said Serving cell sends to its corresponding cooperation cell based on varigrained subband subband mode with the said PRB use information in the said resource occupation information;
Said Serving cell sends one of in the following manner the said user class parameter information in the said resource occupation information: the parameter information that once sends the user; The independent parameter information that sends unique user.
7. according to claim 4 or 6 described methods, it is characterized in that said Serving cell sends to its corresponding cooperation cell through periodic mode or triggering mode with said resource occupation information.
8. a signaling method is characterized in that, comprising:
Serving cell in the cooperation set is confirmed the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission;
Said Serving cell sends said resource occupation information through the X2 interface signaling to its corresponding cooperation cell and is used for said cooperation cell transmission reference signal SRS.
9. method according to claim 8 is characterized in that, said Serving cell sends said resource occupation information through the X2 interface signaling to its corresponding cooperation cell and is used for said cooperation cell and sends SRS and comprise:
IE item CoMP SRS in PRB Indication IE and/or the CoMP SRS in Subframe Indication IE of said Serving cell through being provided with on the LOAD INFORMATION message of said X2 interface sends said PRB to its corresponding cooperation cell and uses information and/or said subframe to use information.
10. method according to claim 8 is characterized in that, said Serving cell sends said resource occupation information through the X2 interface signaling to its corresponding cooperation cell and comprises:
The IE item CoMP SRS ue-specific Information Indication IE of said Serving cell through being provided with on the LAOD INFORMATION message of said X2 interface sends the said user class parameter information in the said resource occupation information to its corresponding cooperation cell.
11. a signaling sending device is applied to cooperation cell, it is characterized in that, comprising:
Receiver module is used to receive the resource occupation information from the cooperation transmission reference signal CoMP SRS of the corresponding Serving cell transmission of the cooperation cell at its place;
First determination module is used to use said resource occupation information to confirm that said one or more cooperation cell is used to send the resource of reference signal SRS;
First sending module is used on said resource, sending SRS.
12. signaling sending device according to claim 11 is characterized in that,
Said first determination module, the nonoverlapping resource of resource that is used to select to indicate with the resource occupation information of said CoMP SRS is the said resource that is used to send SRS.
13. signaling sending device according to claim 11 is characterized in that,
Said receiver module is used to receive one of the following information of sending from the corresponding Serving cell of the said cooperation cell at its place:
The Physical Resource Block PRB of the said CoMP SRS of said Serving cell uses information and/or subframe to use information;
The user class parameter information of the said CoMP SRS of said Serving cell.
14. a signaling sending device is applied to Serving cell, it is characterized in that, comprising:
Second determination module is used for confirming the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission;
Second sending module is used for that said resource occupation information is sent to its corresponding cooperation cell and is used for said cooperation cell transmission SRS.
15. signaling sending device according to claim 14 is characterized in that,
Said second determination module one of is used in the following manner confirming that the PRB of said resource occupation information uses information and/or said subframe to use information:
Use the result who in the given time the said CoMP SRS occurrence frequency on PRB and/or the subframe is added up to confirm that said PRB uses information and/or said subframe to use information;
Use in current subframe during as n; The information of the said CoMP SRS of the N continuous sub-frame that begins from the n+k subframe that said Serving cell sends on X2 interface is that said PRB uses information and/or said subframe to use information; Wherein, n and k are 0 or positive integer, and N is a positive integer.
16. a cooperative transmission system is characterized in that, comprising:
One or more according to each described signaling sending device in the claim 11 to 13 and one or more according to claim 14 or 15 described signaling sending device.
17. a signaling sending device is applied to Serving cell, it is characterized in that, comprising:
The 3rd determination module is used for confirming the resource occupation information of the cooperation transmission reference signal CoMP SRS of its transmission;
The 3rd sending module is used for sending said resource occupation information through the X2 interface signaling to its corresponding cooperation cell and is used for said cooperation cell transmission reference signal SRS.
18. signaling sending device according to claim 17 is characterized in that, said the 3rd sending module comprises:
The 4th sending module; Be used for IE item CoMP SRS in PRB Indication IE and/or CoMP SRS in Subframe Indication IE, send said PRB to its corresponding cooperation cell and use information and/or said subframe to use information through setting on the LOAD INFORMATION message of said X2 interface.
19. signaling sending device according to claim 17 is characterized in that, said the 3rd sending module comprises:
The 5th sending module is used for the IE item CoMP SRS ue-specific Information Indication IE through setting on the LAOD INFORMATION message of said X2 interface, sends said user class parameter information to its corresponding cooperation cell.
20. a cooperative transmission system is characterized in that, comprising:
One or more cooperation cell and one or more according to each described signaling sending device in the claim 17 to 19.
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