CN106160826A

CN106160826A - CSI-RS configuration and CSI feedback method, device and relevant device

Info

Publication number: CN106160826A
Application number: CN201510188793.9A
Authority: CN
Inventors: 王飞; 刘建军; 童辉; 王启星
Original assignee: China Mobile Communications Group Co Ltd
Current assignee: China Mobile Communications Group Co Ltd
Priority date: 2015-04-20
Filing date: 2015-04-20
Publication date: 2016-11-23

Abstract

The invention discloses a kind of CSI-RS configuration and CSI feedback method, device and relevant device, in order to realize the configuration of 16 port CSI-RS and to carry out CSI feedback based on 16 port CSI-RS.Described CSI-RS collocation method, comprise determining that the 16 port channel state information reference signals CSI-RS configuration information for user equipment (UE) configuration, described CSI-RS configuration information includes that the resource element RE information that the 16 port CSI-RS configured for described UE take, the RE that described 16 port CSI-RS take include that the RE in addition to RE shared by the special RS of physical downlink control channel PDCCH, cell special reference RS and UE is sent as 16 port CSI-RS configuration information of its configuration to described UE.

Description

CSI-RS configuration and CSI feedback method, device and relevant device

Technical field

The present invention relates to wireless communication technology field, particularly relate to CSI-RS configuration and CSI feedback method, Device and relevant device.

Background technology

In LTE-Advanced (Long Term Evolution-Advanced, senior Long Term Evolution) system In, define CSI-RS (Channel State Information-Reference Signal, channel condition information Reference signal).CSI-RS is down-bound pilot frequency signal, is to be supplied to receiving terminal for useful letter by transmitting terminal A kind of known signal of number channel measurement.Channel condition information (Channel State Information, CSI) is anti- Feedback can be divided into periodic feedback pattern and non-periodic feedback pattern, and wherein, CSI is indicated (Rank by order Indicator, RI), pre-coding matrix instruction (PrecodingMatrix Indicator, PMI) and channel quality Instruction (Channel Quality Indicator, CQI) composition.Wherein, aperiodic CSI feedback, system work Make flow process as follows:

1, base station carries out the measurement of CSI-RS certain descending sub frame triggering user, and sends CSI-RS；

2, terminal obtains and triggers message, and measures CSI-RS, estimated letter in corresponding subframe Number quality；

3, terminal is according to useful signal quality, determines channel condition information；

4, at least K subframe of end delay, feeding back channel state information (its on available sub-frame of uplink Middle K refers to that terminal calculates the process time of CSI)；

5, base station receives the CSI of terminal feedback in corresponding sub-frame of uplink.

(3DimensionsMultiple-Input Multiple-Out-put, how defeated 3-dimensional multi input is for 3D-MIMO Going out) technology is the subject under discussion that 3GPP RAN1 is discussing, 3D-MIMO mainly uses two-dimensional array sky Line, can describe (M, N, P, Q) by following parameter, and wherein M represents shaking of a like-polarized array antenna Sub-number, N represents the columns of aerial array, and P=2 represents employing dual polarized antenna, M_TXRURepresent same string The number of the transceiver channel that antenna is corresponding, a transceiver channel may correspond to several antenna oscillators, Q=2N*M_TXRURepresent the total number of TXRU comprised in the TXRU array that this aerial array is corresponding, such as, (M, N, P, M_TXRU)=(8,4,2,4) corresponding aerial array can use Fig. 1 (left) to represent, correspondence Q=32, TXRU array can use Fig. 1 (right) to represent, TXRU# (m_TXRU,n_TXRU) represent certain TXRU.

It is an important issue in 3D-MIMO that CSI feedback strengthens, and currently mainly has three kinds of schemes.

Scheme 1: CSI feedback based on Full port CSI-RS (all CSI-RS ports), the program Middle CSI-RS port number is equal with TXRU number, and is the relation mapped one by one, as shown in Figure 2.

Scheme 2: CSI feedback based on Partial port CSI-RS (part CSI-RS port), the party Case uses the CSI-RS that two sets are independent, and the port number of the most a set of CSI-RS is 2N, is mapped to TXRU one by one 2N the TXRU of array a line, the port number of another set of CSI-RS is M_TXRU, it is mapped to one by one The M of TXRU array string_TXRUIndividual TXRU, as shown in Figure 3.

Scheme 3: CSI feedback based on Beamformed CSI-RS (CSI-RS of wave beam forming), should In scheme, CSI-RS have passed through the wave beam forming of vertical dimension, and the vertical dimension shape-endowing weight value different by B group will M with string_TXRUIndividual TXRU is mapped on B vertical dimension wave beam, each vertical dimension wave beam correspondence one Set CSI-RS (port number often overlapped is 2N), therefore has B and overlaps CSI-RS, as shown in Figure 4.

Wherein scheme 1 is the method that current LTE system uses, and its advantage is UE it is anticipated that the most comprehensive Channel information, i.e. UE can obtain the channel information between UE and all transmission antenna ports.But, When using the program, if port number is more, on the one hand, CSI-RS expense is big, it is different CSI-RS The expense that port is corresponding, in current LTE, the expense of 8 CSI-RS ports is about 1.5%, 16CSI-RS port Expense is 3%, and 32CSI-RS port and 64 port costs are relatively large.

Industry is generally recognized when port number less (such as less than 20), and CSI-RS expense is the most acceptable, because of This can use scheme 1, and when port number is bigger time (such as larger than 20), based on Full port CSI-IS The CSI-IS expense carrying out CSI feedback is too big, accordingly, it would be desirable to consider scheme 2 and scheme 3.

Existing system supports 1,2,4,8 CSI-RS ports.CSI-RS pattern in Fig. 5 a-Fig. 5 c (pattern) design be frame structure Class1 (FDD) and frame structure type 2 (TDD) can, For the RE (resource element) of CSI-RSs with two letter representations, first letter represents cell index (Cell Index), second letter represents the antenna port (antenna ports) of transmission on this RE. These pattern use nested structure, say, that 2 port CSI-RS antenna ports are 4 ports and 8 The subset of port CSI-RS antenna ports, this design advantageously reduces the complexity of realization.Total sky Line antenna ports is 40, supports that inter-cell frequency multiplexing factor is 5 and every community uses 8 CSI-RS Antenna ports, or inter-cell frequency multiplexing factor is 10 and every community uses 4 CSI-RS antenna Ports, or inter-cell frequency multiplexing factor is 20 and every community uses 2 CSI-RS antenna ports.By Fig. 5 a-Fig. 5 c understands, Release 8 for TM7 (transmission mode 7) DMRS (demodulated reference signal, Port 5 is used for sending DMTS signal) can collide with CSI-RS, it is therefore desirable to avoid sending out a CSI-RS Subframe in dispatch the user of TM7.CSI-RS pattern design in Fig. 5 d-Fig. 5 f is only applicable to frame knot Structure type 2 (TDD), primarily to avoid Release 8 for the DMRS (Port 5) of TM7 and CSI-RS collides.CSI-RS design in existing system have employed the orthogonal code of a length of 2 in time domain Set up meter separately so that the CSI-RSs of two antenna ports shares 2 RE on a subcarrier.

Prior art is only supported the configuration of the CSI-IS of most 8 ports, how to realize 16 port CSI-RS Configuration and carry out CSI feedback based on 16 port CSI-RS, become the technology that prior art is urgently to be resolved hurrily One of problem.

Summary of the invention

The embodiment of the present invention provides a kind of CSI-RS configuration and CSI feedback method, device and relevant device, In order to realize the configuration of 16 port CSI-RS and to carry out CSI feedback based on 16 port CSI-RS.

The embodiment of the present invention provides a kind of CSI-RS collocation method, including:

It is defined as 16 port channel state information reference signals CSI-RS configuration letters of user equipment (UE) configuration Breath, described CSI-RS configuration information includes the resource that the 16 port CSI-RS configured for described UE take Elements RE information, the RE that described 16 port CSI-RS take includes except Physical Downlink Control Channel RE beyond RE shared by the special RS of PDCCH, cell special reference RS and UE；

16 port CSI-RS configuration information of its configuration it are sent as to described UE.

Wherein, the RE that described CSI-RS takies is the RE shared by known CSI-RS；And be described The RE that 16 port CSI-RS of UE configuration take is to appoint from the RE shared by described known CSI-RS 16 RE that meaning selects.

The RE that described 16 port CSI-RS take is:

In each PRB the first time slot (k, l)={ (8,5), (8,6), (9,5), (9,6) } corresponding RE and the second time slot (k, l)=(10,2), (10,3), (11,2), (11,3), (6,2) (6,3), (7,2) (7,3), (8,5), (8,6) (9,5), (9,6) } corresponding RE；Or Person

In each PRB the first time slot (k, l)={ (2,5), (2,6), (3,5), (3,6) } corresponding RE and the second time slot (k, l)=(4,2), (4,3), (5,2), (5,3), (1,2) (1,3), (0,2) (0,3), (2,5), (2,6) (3,5), (3,6) } corresponding RE；

Wherein, k is subcarrier sequence number and the k value the most successively of the subcarrier that a PRB comprises 0,1,2 ..., 11；L is comprised OFDM sequence number and each time slot by each time slot that a PRB comprises Middle l value the most successively is 0,1,2 ... 6.

Wherein, the RE that described CSI-RS takies is the RE shared by known CSI-RS；And be described The RE that 16 port CSI-RS of UE configuration take is the group of RE shared by any two 8 ports CSI-RS Close.

The RE that described 16 port CSI-RS take is:

In each PRB the first time slot (k, l)=(8,5), (8,6), (9,5), (9,6), (2,5), (2,6), (3,5), (3,6) } corresponding RE and (k, l)={ (10,2), (10,3) of the second time slot, (11,2), (11,3), (4,2) (4,3), (5,2) (5,3) } corresponding RE； Or

Second time slot in each PRB (k, l)=(7,2), (7,3), (6,2), (6,3), (0,2) (0,3), (1,2) (1,3), (9,5), (9,6), (8,5), (8,6), (3,5), (3,6), (2,5), (2,6) } Corresponding RE；

The RE that described 16 port CSI-RS take is:

In each PRB the first time slot (k, l)=(8,5), (8,6), (9,5), (9,6), (2,5), (2,6), (3,5), (3,6) } corresponding RE and (k, l)={ (6,2), (6,3), (7,2), (7,3), (1,2) (1,3), (0,2) (0,3) } corresponding RE of the second time slot；Or Person

Second time slot in each PRB (k, l)=(11,2), (11,3), (10,2), (10,3), (5,2) (5,3), (4,2) (4,3), (9,5), (9,6), (8,5), (8,6), (3,5), (3,6), (2,5), (2,6) } Corresponding RE；

It is defined as the RE information that takies of 16 port CSI-RS of described UE configuration in accordance with the following methods:

Determine that the RE information that described 16 port CSI-RS take is that (p, q), wherein, p is composition described 16 CSI reference corresponding for RE shared by first 8 port CSI-RS in the RE that port CSI-RS takies Configuration information, and p=0,1,2,3,4；Q is to form in the RE that takies of described 16 port CSI-RS second 8 CSI reference configuration information corresponding for RE shared by port CSI-RS, and q=0,1,2,3,4.

The RE that described CSI-RS takies includes the RE shared by known CSI-RS and 8 newly-increased RE.

Newly-increased RE includes the first time slot in each Physical Resource Block PRB (k, l)=(4,5), (4,6), (7,5), (7,6) } corresponding RE and the second time slot (k, l)=(4,5), (4,6), (7,5), (7,6) } right The RE answered, wherein, k be the subcarrier sequence number of the subcarrier that a Physical Resource Block PRB comprises and k by Under value 0 the most successively, 1,2 ..., 11；Each time slot that l comprises by a PRB is comprised orthogonal frequency Dividing l value the most successively in multiplexing OFDM sequence number and each time slot is 0,1,2 ... 6.

Wherein, the RE that the 16 port CSI-RS configured for described UE take is for account for from described CSI-RS RE and 8 newly-increased RE in optional 16 RE.

The RE that the 16 port CSI-RS configured for described UE take is any two 8 ports CSI-RS institute Take combining or the combination of RE shared by 8 port CSI-RS and newly-increased 8 RE of RE.

The RE that described 16 port CSI-RS take is:

In each PRB the first time slot (k, l)={ (7,5), (7,6), (4,5), (4,6) } corresponding RE and the second time slot (k, l)=(9,2), (9,3), (8,2), (8,3), (3,2) (3,3), (2,2) (2,3), (7,5), (7,6) (4,5), (4,6) } corresponding RE.

Determine that CSI reference configuration information corresponding for newly-increased 8 RE is 5；

Determine that the RE information that described 16 port CSI-RS take is that (p, q), wherein, p is composition described 16 Front 8 CSI reference configuration information corresponding for RE in the RE that port CSI-RS takies, and p=0,1,2,3,4,5； Q is to form rear 8 CSI reference configuration corresponding for RE letter in the RE that described 16 port CSI-RS take Breath, and q=0,1,2,3,4,5.

Described CSI-RS collocation method, also includes:

Receiving the CSI back information that described UE sends, described CSI feedback information is institute State UE and carry out what the measurement result of CSI-RS measurement determined according to described CSI-RS configuration information.

The embodiment of the present invention provides a kind of CSI-RS to configure device, including:

Determine unit, for being defined as 16 port channel state information references letters of user equipment (UE) configuration Number CSI-RS configuration information, described CSI-RS configuration information includes 16 ports configured for described UE The resource element RE information that CSI-RS takies, the RE that described 16 port CSI-RS take includes except physics Beyond RE shared by the special RS of down control channel PDCCH, cell special reference RS and UE RE；

Transmitting element, for being sent as 16 port CSI-RS configuration information of its configuration to described UE.

The RE that described CSI-RS takies is the RE shared by known CSI-RS；And join for described UE The RE that the 16 port CSI-RS put take is arbitrarily to select from the RE shared by described known CSI-RS 16 RE.

The RE that described 16 port CSI-RS take is:

Described determine unit, specifically for being defined as 16 ports of described UE configuration in accordance with the following methods The RE information that CSI-RS takies: determine RE information that described 16 port CSI-RS take for (p, q), its In, p is to form in the RE that takies of described 16 port CSI-RS shared by first 8 port CSI-RS CSI reference configuration information corresponding for RE, and p=0,1,2,3,4；Q accounts for for forming described 16 port CSI-RS RE in CSI reference configuration information corresponding for RE shared by second 8 port CSI-RS, and Q=0,1,2,3,4.

The RE that the 16 port CSI-RS configured for described UE take is the RE taken from described CSI-RS With 16 RE optional in 8 newly-increased RE.

Described determine unit, specifically for being defined as 16 ports of described UE configuration in accordance with the following methods The RE information that CSI-RS takies: determine that CSI reference configuration information corresponding for newly-increased 8 RE is 5； Determine that the RE information that described 16 port CSI-RS take is that (p, q), wherein, p is for forming described 16 ports Front 8 CSI reference configuration information corresponding for RE in the RE that CSI-RS takies, and p=0,1,2,3,4,5；Q is Form rear 8 CSI reference configuration information corresponding for RE in the RE that described 16 port CSI-RS take, And q=0,1,2,3,4,5.

The CSI-RS that the present invention implements to provide configures device, also includes:

Receive unit, for receiving the CSI back information that described UE sends, described CSI Feedback information is that the measurement result that described UE carries out CSI-RS measurement according to described CSI-RS configuration information is true Fixed.

The embodiment of the present invention provides a kind of base station, configures device including above-mentioned CSI-IS.

The embodiment of the present invention provides a kind of CSI feedback method, including:

Receiving channel state information reference signal CSI-RS configuration information, described CSI-RS configuration information includes The resource element RE information that 16 port CSI-RS take, the RE bag that described 16 port CSI-RS take Include except shared by the special RS of physical downlink control channel PDCCH, cell special reference RS and UE RE beyond RE；

According to described CSI-RS configuration information, CSI-RS is measured；

CSI feedback is carried out according to measurement result.

The embodiment of the present invention provides a kind of CSI feedback device, including:

Receive unit, for receiving channel state information reference signal CSI-RS configuration information, described CSI-RS Configuration information includes the resource element RE information that 16 port CSI-RS take, described 16 port CSI-RS The RE taken includes except physical downlink control channel PDCCH, cell special reference RS and UE are special With the RE beyond RE shared by RS；

Measuring unit, for measuring CSI-RS according to described CSI-RS configuration information；

Feedback unit, for carrying out CSI feedback according to the measurement result of described measuring unit.

The embodiment of the present invention provides a kind of subscriber equipment, including above-mentioned CSI feedback device.

The CSI-RS that the embodiment of the present invention provides configures and in CSI feedback method, device and relevant device, The 16 port CSI-RS configuration information configured for UE are sent to UE by network side, wherein comprise promising being somebody's turn to do The RE information that 16 port CSI-RS of UE configuration take, the RE that 16 port CSI-RS take includes removing RE shared by the special RS of physical downlink control channel PDCCH, cell special reference RS and UE RE in addition, UE carry out the survey of CSI-RS according to the 16 port CSI-RS configuration information that network side configures Amount, and feed back CSI information according to measurement result to network side.Hereby it is achieved that 16 port CSI-RS Configure and carry out CSI feedback based on 16 port CSI-RS.

Other features and advantages of the present invention will illustrate in the following description, and, partly from explanation Book becomes apparent, or understands by implementing the present invention.The purpose of the present invention and other advantages can Realize by structure specifically noted in the description write, claims and accompanying drawing and obtain ?.

Accompanying drawing explanation

Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes of the present invention Point, the schematic description and description of the present invention is used for explaining the present invention, is not intended that to the present invention not Work as restriction.In the accompanying drawings:

Fig. 1 is in prior art, aerial array and TXRU array schematic diagram；

Fig. 2 is in prior art, CSI-RS port number and the mapping schematic diagram of TXRU in scheme one；

Fig. 3 is in prior art, CSI-RS port number and the mapping schematic diagram of TXRU in scheme two；

Fig. 4 is in prior art, CSI-RS port number and the mapping schematic diagram of TXRU in scheme three；

Fig. 5 a-Fig. 5 c is in prior art, it is adaptable to frame structure Class1 (FDD) and frame structure type 2 (TDD) CSI-RS pattern design diagram；

Fig. 5 d-Fig. 5 f is in prior art, it is adaptable to the CSI-RS pattern of frame structure type 2 (TDD) Design diagram.

Fig. 6 a is in the embodiment of the present invention, the implementing procedure schematic diagram of CSI-RS collocation method；

Fig. 6 b is in the embodiment of the present invention, the first 16 port CSI-RS configuration mode schematic diagram；

Fig. 7 a is in the embodiment of the present invention, and inter-cell frequency multiplexing factor is to be defined as UE configuration when 2 The implementing procedure schematic diagram of the RE that 16 port CSI-RS take；

In Fig. 7 b embodiment of the present invention, the second 16 port CSI-RS configuration mode schematic diagram；

In Fig. 7 c embodiment of the present invention, the third 16 port CSI-RS configuration mode schematic diagram；

Fig. 8 is in the embodiment of the present invention, the resource location schematic diagram of newly-increased 8 RE；

Fig. 9 is in the embodiment of the present invention, and inter-cell frequency multiplexing factor is application scenarios schematic diagram when 3；

Figure 10 is in the embodiment of the present invention, and inter-cell frequency multiplexing factor is to be defined as UE configuration when 3 The implementing procedure schematic diagram of the RE that 16 port CSI-RS take；

Figure 11 a is in the embodiment of the present invention, the 4th kind of 16 port CSI-RS configuration mode schematic diagram；

Figure 11 b is in the embodiment of the present invention, the 5th kind of 16 port CSI-RS configuration mode schematic diagram；

Figure 11 c is in the embodiment of the present invention, the 6th kind of 16 port CSI-RS configuration mode schematic diagram；

Figure 12 is in the embodiment of the present invention, whole RE schematic diagrams that 16 port CSI-RS take；

Figure 13 is in the embodiment of the present invention, 16 port CSI-RS when the 4th kind of re-used across cells factor is 3 Configuration mode schematic diagram；

Figure 14 is in the embodiment of the present invention, the structural representation of CSI-RS configuration device；

Figure 15 is in the embodiment of the present invention, and UE implements the implementing procedure schematic diagram of CSI feedback method；

Figure 16 is in the embodiment of the present invention, the structural representation of CSI feedback device.

In accompanying drawing:

121 represent the RE that in R8, DM-RS takies；

122 represent the RE that in R9/10, DM-RS takies；

123 represent the RE that the special RS in R8 small area takies；

124 represent the RE that existing CSI-RS takies；

125 represent the RE that CSI-RS newly-increased in the embodiment of the present invention takies；

In Fig. 5 a-Fig. 5 f:

CDM (code domain orthogonal guide frequency) group x represents antenna port 0,1；

CDM (code domain orthogonal guide frequency) group y represents antenna port 2,3；

CDM (code domain orthogonal guide frequency) group z represents antenna port 4,5；

CDM (code domain orthogonal guide frequency) group u represents antenna port 6,7；

In Figure 11 a-Figure 11 c, Figure 12 and Figure 13:

CDM (code domain orthogonal guide frequency) group a represents antenna port 0,1；

CDM (code domain orthogonal guide frequency) group b represents antenna port 2,3；

CDM (code domain orthogonal guide frequency) group c represents antenna port 4,5；

CDM (code domain orthogonal guide frequency) group d represents antenna port 6,7；

CDM (code domain orthogonal guide frequency) group e represents antenna port 8,9；

CDM (code domain orthogonal guide frequency) group f represents antenna port 10,11；

CDM (code domain orthogonal guide frequency) group g represents antenna port 12,13；

CDM (code domain orthogonal guide frequency) group h represents antenna port 14,15.

Detailed description of the invention

In order to realize the configuration of 16 port CSI-RS and carry out CSI feedback based on 16 port CSI-RS, Embodiments provide a kind of CSI-RS configuration i.e. CSI feedback method, device and relevant device.

Below in conjunction with Figure of description, the preferred embodiments of the present invention are illustrated, it will be appreciated that this place The preferred embodiment described is merely to illustrate and explains the present invention, is not intended to limit the present invention, and not In the case of conflict, the embodiment in the present invention and the feature in embodiment can be mutually combined.

As shown in Figure 6 a, the implementing procedure schematic diagram of CSI-RS collocation method provided for the embodiment of the present invention, Comprise the following steps:

S61, be defined as UE configuration 16 port CSI-RS configuration information.

S62, to UE be sent as its configuration 16 port CSI-RS configuration information.

Wherein, CSI-RS configuration information includes the RE (money taken for 16 port CSI-RS of UE configuration Source element) information.When being embodied as, the RE that 16 port CSI-RS take includes except PDCCH (physics Down control channel) in the RE, the most each PRB (Physical Resource Block) that take except front 3 OFDM (just Hand over frequency division multiplexing) symbol, beyond RE shared by cell-specific RS (reference signal) and the special RS of UE RE.

Based on 40 RE shared by existing CSI-RS, the embodiment of the present invention provides two kind of 16 port CSI-RS configuration mode.

Configuration mode one,

The RE that 16 port CSI-RS take is that the RE that known CSI-RS takies is constant, i.e. remains as existing 40 RE having, under this configuration mode, it is also possible to include following two embodiment:

The first embodiment, can arbitrarily select 16 RE from the RE that existing CSI-RS takies 16 port CSI-RS are configured as UE.

It is also preferred that the left for the interference reducing minizone as far as possible, for 16 ports of each community UE configuration 16 RE shared by CSI-RS preferably form " rhombus ".

Concrete, as shown in Figure 6 b, for the 16 a kind of possible port CSI-RS that the first embodiment is corresponding The RE schematic diagram taken.In Fig. 6 b, the RE that 16 port CSI-RS take is: in each PRB first Time slot (k, l)={ (8,5), (8,6), (9,5), (9,6) } corresponding RE and the second time slot (k, l)=(10,2), (10,3), (11,2), (11,3), (6,2) (6,3), (7,2) (7,3), (8,5), (8,6) (9,5), (9,6) } corresponding RE；Or In each PRB of person the first time slot (k, l)={ (2,5), (2,6), (3,5), (3,6) } corresponding RE and the second time slot (k, l)=(4,2), (4,3), (5,2), (5,3), (1,2) (1,3), (0,2) (0,3), (2,5), (2,6) (3,5), (3,6) } corresponding RE；Wherein, K is subcarrier sequence number and k value 0 the most successively of the subcarrier that a PRB comprises, 1,2 ..., 11；L is comprised in OFDM sequence number and each time slot l from left to right by each time slot that a PRB comprises Value is 0 successively, 1,2 ... 6.

After the RE that the 16 port CSI-RS configured at the UE determining each community take, base station leads to Cross the 16 port CSI-RS configuration information that UE is its configuration in signaling instruction respective cell, i.e. 16 ends The RE information that mouth CSI-RS takies.The 16 port CSI-configuration informations that UE sends according to base station are surveyed Amount, and carry out CSI feedback according to measurement result.

The second embodiment,

During it is also preferred that the left be embodied as, it is also possible to based on 8 port CSI-RS configuration modes, from 5 8 port CSI-RS configuration modes select any two 8 port CSI-RS form 16 port CSI-RS. In this case, the RE taken for 16 port CSI-RS of UE configuration can be any two 8 ports The combination of RE shared by CSI-RS.As shown in Figure 5 c, for respectively community A, community B, community C, Community D and community E configures the resource distribution schematic diagram of 8 port CSI-RS and (wherein, configures for community A 8 CSI reference configuration information corresponding for port CSI-RS be 0, for community B configuration 8 port CSI-RS Corresponding CSI reference configuration information is 1, for 8 CSI ginsengs corresponding for port CSI-RS of community C configuration Examining configuration information is 2, and the 8 CSI reference configuration information corresponding for port CSI-RS for community D configuration are 3, the 8 CSI reference configuration information corresponding for port CSI-RS for community D configuration are 5), each community Take 8 RE.Based on this, in the embodiment of the present invention, can be by 8 ends for any two cell configuration The RE that mouth CSI-RS takies is combined into the RE that 16 port CSI-RS take.Due in existing system There are 58 orthogonal port CSI-RS methods of salary distribution, so can be combined into 2 groups orthogonal 16 The port CSI-RS method of salary distribution, there remains 8 port CSI-RS methods of salary distribution, this feelings Under condition, can support that the frequency duplex factor as one of the orthogonal multiplex between 2 neighbor cells, i.e. minizone is 2.

Based on this, as shown in Figure 7a, step S61 can be defined as UE configuration in accordance with the following methods The RE that 16 port CSI-RS take:

S611, from the RE shared by 58 port CSI-RS, arbitrarily select 28 port CSI-RS Shared RE forms the RE that first group of 16 port CSI-RS takies.

S612, from residue 38 port CSI-RS shared by RE select any 28 port CSI-RS Shared RE forms the RE that second group of 16 port CSI-RS takies.

S613, select from the RE that the two group of 16 port CSI-RS obtained takies arbitrary group as should The RE that 16 port CSI-RS of UE configuration take.

In order to reduce the interference of minizone as far as possible, for 16 port CSI-RS institutes of each community UE configuration 16 RE taken preferably form " rhombus ".

As shown in Fig. 7 b and Fig. 7 c, respectively corresponding under the second embodiment 16 possible ports The RE schematic diagram that CSI-RS takies.

In Fig. 7 b, the RE that 16 port CSI-RS take is: the first time slot in each PRB (k, l)={ (8,5), (8,6), (9,5), (9,6), (2,5), (2,6), (3,5), (3,6) } corresponding RE and the second time slot (k, l)={ (10,2), (10,3), (11,2), (11,3), (4,2) (4,3), (5,2) (5,3) } corresponding RE；Or in each PRB Two time slots (k, l)=(7,2), (7,3), (6,2), (6,3), (0,2) (0,3), (1,2) (1,3), (9,5), (9,6), (8,5), (8,6), (3,5), (3,6), (2,5), (2,6) } Corresponding RE；Wherein, k is the subcarrier sequence number of the subcarrier that a PRB comprises and k depends on from bottom to top Secondary value 0,1,2 ..., 11；L by each time slot that a PRB comprises comprised OFDM sequence number and In each time slot, l value the most successively is 0,1,2 ... 6.

In Fig. 7 c, the RE that 16 port CSI-RS take is: the first time slot in each PRB (k, l)={ (8,5), (8,6), (9,5), (9,6), (2,5), (2,6), (3,5), (3,6) } corresponding RE and the second time slot (k, l)={ (6,2), (6,3), (7,2), (7,3), (1,2) (1,3), (0,2) (0,3) } corresponding RE；Or in each PRB second time Gap (k, l)=(11,2), (11,3), (10,2), (10,3), (5,2) (5,3), (4,2) (4,3), (9,5), (9,6), (8,5), (8,6), (3,5), (3,6), (2,5), (2,6) } Corresponding RE；Wherein, k is the subcarrier sequence number of the subcarrier that a PRB comprises and k depends on from bottom to top Secondary value 0,1,2 ..., 11；L by each time slot that a PRB comprises comprised OFDM sequence number and In each time slot, l value the most successively is 0,1,2 ... 6.

During it is also preferred that the left be embodied as, base station and UE both can use predefined 16 fixing ports CSI-RS allocation plan, i.e. base station are taken by the 16 port CSI-RS that signaling instruction UE is its configuration Concrete RE.If the RE shared by 16 port CSI-RS of UE configuration by two 8 port CSI-RS During the RE composition taken, it would however also be possible to employ the scheme that network side configures in real time, i.e. network side are referred to by instruction Show that those two 8 port CSI-RS combinations are specifically formed 16 port CSI-RS by UE, i.e. base station is permissible Take, by its 16 port CSI-RS configured, each 8 ports that RE is comprised by signaling instruction UE CSI reference configuration information corresponding for CSI-RS.

Concrete, base station can be defined as what 16 port CSI-RS of UE configuration took in accordance with the following methods RE information: determine that the RE information that 16 port CSI-RS take is that (p, q), wherein, p is composition 16 ends In the RE that mouth CSI-RS takies, the CSI corresponding for RE shared by first 8 port CSI-RS is with reference to joining Confidence ceases, and p=0, and 1,2,3,4；Q is to form second 8 end in the RE that described 16 port CSI-RS take Mouth CSI reference configuration information corresponding for RE shared by CSI-RS, and q=0,1,2,3,4.

When being embodied as, if RE such as Fig. 7 b that the 16 port CSI-RS that base station is UE configuration take Time shown, then p=0, q=1；Or p=1, q=0；Or p=2, q=4, or p=4, q=2.

When being embodied as, if RE such as Fig. 7 c that the 16 port CSI-RS that base station is UE configuration take Time shown, then p=0, q=3；Or p=3, q=0；Or p=1, q=4；Or p=4, q=1.

Configuration mode two,

In order to obtain preferable systematic function, the embodiment of the present invention takies resource at existing CSI-RS On the basis of, increase by 8 RE so that system can support the orthogonal multiplex between 3 neighbor cells.It is this, In the case of, need to select in other RE in addition to RE shared by existing CSI-RS of a PRB 8 Individual RE, to be combined into 3 16 orthogonal port CSI-RS methods of salary distribution, support 3 adjacent little Interval multiplexing.

Under this embodiment, the RE that CSI-RS takies includes that the RE shared by known CSI-RS is with new 8 RE increased.

8 RE are selected in other RE in addition to the RE that existing CSI-RS takies of a PRB When, it then follows following principle:

(1) avoid front 3 OFDM symbol (for PDCCH), avoid UE special RS (Port 7/8/9/10/11/12/13/14) RE that may take, avoids the RE that cell-specific RS may take.

(2) need not avoid the RE that DM-RS for release 8 (Port 5) may take, because at net The when that network being upgraded to R13, the R8 terminal in system may be the most little, and a small amount of use TM7 The terminal of (transmission mode 7) can be by avoiding in the subframe scheduling solution comprising CSI-RS.

(3) select time domain continuous print RE as far as possible, facilitate views with time domain OCC (as far as possible and existing system Keep consistent, reduce the complexity realized).

Based on mentioned above principle, it is also preferred that the left as shown in Figure 8, for 8 RE's newly-increased in the embodiment of the present invention Resource location schematic diagram, including: when general cyclic prefix (Normal CP), select 8 shown in Fig. 8 Individual RE, (k, l)={ (4,5), (4,6), (7,5), (7,6) } correspondence of the first time slot (slot) in the most each PRB RE and the second time slot (k, l)={ (4,5), (4,6), (7,5), (7,6) } corresponding RE, wherein, k is a physics The subcarrier sequence number of the subcarrier that Resource Block PRB comprises and k value 0 the most successively, 1,2 ..., 11；L is comprised in OFDM symbol sequence number and each time slot l by a left side by each time slot that a PRB comprises Value is 0 the most successively, 1,2 ... 6, i.e. 8 RE comprised in 4 ellipses in Fig. 8.

Based on this, in the embodiment of the present invention, configure 16 port CSI-RS for UE and comprise following two enforcement Mode:

The third embodiment,

16 are arbitrarily selected as configuring for UE from known 40 RE and 8 newly-increased RE RE shared by 16 port CSI-RS.

Based on the third embodiment, as shown in fig. 11a, may for the one that the third embodiment is corresponding The RE schematic diagram that takies of 16 port CSI-RS.In Figure 11 a, the RE that 16 port CSI-RS take For: in each PRB the first time slot (k, l)={ (8,5), (8,6), (9,5), (9,6) } corresponding RE and the second time slot (k, l)=(10,2), (10,3), (11,2), (11,3), (6,2) (6,3), (7,2) (7,3), (8,5), (8,6) (9,5), (9,6) } corresponding RE；Or In each PRB of person the first time slot (k, l)={ (2,5), (2,6), (3,5), (3,6) } corresponding RE and the second time slot (k, l)=(4,2), (4,3), (5,2), (5,3), (1,2) (1,3), (0,2) (0,3), (2,5), (2,6) (3,5), (3,6) } corresponding RE；Or it is every In one PRB the first time slot (k, l)={ (7,5), (7,6), (4,5), (4,6) } corresponding RE and the second time slot (k, l)=(9,2), (9,3), (8,2), (8,3), (3,2) (3,3), (2,2) (2,3), (7,5), (7,6) (4,5), (4,6) } corresponding RE.Wherein, K is subcarrier sequence number and k value 0 the most successively of the subcarrier that a PRB comprises, 1,2 ..., 11；L is comprised in OFDM sequence number and each time slot l from left to right by each time slot that a PRB comprises Value is 0 successively, 1,2 ... 6.

4th kind of embodiment,

For the ease of describing, join using one group of newly-increased 8 RE as the 6th kind of 8 port CSI-RS below Put mode, and the CSI reference configuration information of its correspondence is 5.So, comprise 68 port CSI-RS altogether, When being embodied as, the port of composition 16 port that any two 8 port CSI-RS takies can be selected The RE that CSI-RS takies.The RE that takies of 16 port CSI-RS being UE configuration is any two 8 ends RE and 8 increased newly shared by the combination of RE shared by mouth CSI-RS or 8 port CSI-RS The combination of RE.

When being embodied as, it is known that RE that 40 CSI-RS take and newly-increased 8 RE of the embodiment of the present invention 3 groups of 16 orthogonal port CSI-RS configuration modes can be formed, 3 re-used across cells, i.e. minizones Frequency duplex factor as one is 3, as shown in Figure 9.

Based on this, in the embodiment of the present invention, as shown in Figure 10, in step S61, can be, but not limited to by The RE that takies of 16 port CSI-RS of UE configuration it is defined as according to following methods:

S101, from the RE shared by 58 port CSI-RS, arbitrarily select 28 port CSI-RS Shared RE forms the RE that first group of 16 port CSI-RS takies；

S102, from residue 38 port CSI-RS shared by RE select any 28 port CSI-RS Shared RE forms the RE that second group of 16 port CSI-RS takies；

S103, by the RE shared by the most remaining 18 port CSI-RS and 8 newly-increased RE groups Become the RE that the 3rd group of 16 port CSI-RS takies；

S104, from the RE that the three group of 16 port CSI-RS obtained takies, select arbitrary group as UE The RE that 16 port CSI-RS of configuration take.

When being embodied as, it is one group with 8 newly-increased RE, adds existing 58 port CSI-RS The RE taken, so has 6 groups of CSI-RS methods of salary distribution.Determining 16 port CSI-RS During distribution combination, in addition to implementing according to method shown in Figure 10, it is also possible to from 6 groups of CSI-RS distribution In mode, the most optional two groups are combined into a kind of 16 port CSI-RS distribution combinations, eventually form 3 Organize the 16 orthogonal port CSI-RS methods of salary distribution, in 3 adjacent re-used across cells.

It is also preferred that the left for the interference reducing minizone as far as possible, for 16 ports of each community UE configuration 16 RE shared by CSI-RS preferably form " rhombus ".Respectively as shown in 11b and Figure 11 c.

As shown in figure 11b, the RE that 16 port CSI-RS take is:

In each PRB the first time slot (k, l)=(8,5), (8,6), (9,5), (9,6), (2,5), (2,6), (3,5), (3,6) } corresponding RE and (k, l)={ (10,2), (10,3) of the second time slot, (11,2), (11,3), (4,2) (4,3), (5,2) (5,3) } corresponding RE； { the RE that Aa, Ab, Ac, Ad, Ae, Af, Ag, Ah} are corresponding in i.e. Figure 11 b.Or

Second time slot in each PRB (k, l)=(7,2), (7,3), (6,2), (6,3), (0,2) (0,3), (1,2) (1,3), (9,5), (9,6), (8,5), (8,6), (3,5), (3,6), (2,5), (2,6) } Corresponding RE；{ the RE that Ba, Bb, Bc, Bd, Be, Bf, Bg, Bh} are corresponding in i.e. Figure 11 b.Or

In each PRB the first time slot (k, l)={ (7,5), (7,6), (4,5), (4,6) } corresponding RE and the second time slot (k, l)=(9,2), (9,3), (8,2), (8,3), (3,2) (3,3), (2,2) (2,3), (7,5), (7,6) (4,5), (4,6) } corresponding RE；I.e. scheme { the RE that Ca, Cb, Cc, Cd, Ce, Cf, Cg, Ch} are corresponding in 11b.

After the RE that the 16 port CSI-RS configured at the UE determining each community take, base station leads to Cross the 16 port CSI-RS configuration information that UE is its configuration in signaling instruction respective cell, i.e. 16 ends The RE information that mouth CSI-RS takies.The 16 port CSI-configuration informations that UE sends according to base station are surveyed Amount, and carry out CSI feedback according to measurement result.Such as, base station 1 is joined for it by signaling indicating cell 1 The RE that the 16 port CSI-RS put take is the RE that first group of 16 port CSI-RS takies, base station 2 The RE taken for its 16 port CSI-RS configured by signaling indicating cell 2 is second group of 16 port RE, base station 3 that CSI-RS takies are accounted for for its 16 port CSI-RS configured by signaling indicating cell 3 RE be the RE that the 3rd group of 16 port CSI-RS takies.

As shown in fig. 11c, the RE that 16 port CSI-RS take is:

In each PRB the first time slot (k, l)=(8,5), (8,6), (9,5), (9,6), (2,5), (2,6), (3,5), (3,6) } corresponding RE and (k, l)={ (6,2), (6,3), (7,2), (7,3), (1,2) (1,3), (0,2) (0,3) } corresponding RE of the second time slot；I.e. { the RE that Aa, Ab, Ac, Ad, Ae, Af, Ag, Ah} are corresponding in Figure 11 c.Or

Second time slot in each PRB (k, l)=(11,2), (11,3), (10,2), (10,3), (5,2) (5,3), (4,2) (4,3), (9,5), (9,6), (8,5), (8,6), (3,5), (3,6), (2,5), (2,6) } Corresponding RE；{ the RE that Ba, Bb, Bc, Bd, Be, Bf, Bg, Bh} are corresponding in i.e. Figure 11 c.Or

In each PRB the first time slot (k, l)={ (7,5), (7,6), (4,5), (4,6) } corresponding RE and the second time slot (k, l)=(9,2), (9,3), (8,2), (8,3), (3,2) (3,3), (2,2) (2,3), (7,5), (7,6) (4,5), (4,6) } corresponding RE；I.e. scheme { the RE that Ca, Cb, Cc, Cd, Ce, Cf, Cg, Ch} are corresponding in 11c.

During it is also preferred that the left be embodied as, base station and UE both can use predefined 16 fixing ports CSI-RS allocation plan, i.e. base station are taken by the 16 port CSI-RS that signaling instruction UE is its configuration Concrete RE.If the RE shared by 16 port CSI-RS of UE configuration by two 8 port CSI-RS During the RE composition taken, it would however also be possible to employ the scheme that network side configures in real time, i.e. network side are referred to by instruction Show that those two 8 port CSI-RS combinations are specifically formed 16 port CSI-RS by UE, i.e. base station is permissible Take, by its 16 port CSI-RS configured, each 8 ports that RE is comprised by signaling instruction UE CSI reference configuration information corresponding for CSI-RS.Concrete, during the present invention implements, can be according to lower section Method is defined as the RE information that takies of 16 port CSI-RS of UE configuration:

Step one, determine that CSI reference configuration information corresponding for newly-increased 8 RE is 5；

Step 2, determine that RE information that described 16 port CSI-RS take is for (p, q), wherein, p is group Become front 8 CSI reference configuration information corresponding for RE in the RE that described 16 port CSI-RS take, And p=0,1,2,3,4,5；Q is that in the RE that the described 16 port CSI-RS of composition take, rear 8 RE are corresponding CSI reference configuration information, and q=0,1,2,3,4,5.

Concrete, existing 8 CSI reference configuration information (CSI Reference corresponding for port CSI-RS Configuration) 0,1,2,3,4 it is respectively.Definition first increases 8 CSI reference configuration information corresponding for RE 5。

As shown in figure 12, CSI reference configuration information be the RE that takies of 8 port CSI-RS of 0 be Figure 12 In Aa, Ab, Ac, Ad}, CSI reference configuration information be 1 the RE that takies of 8 port CSI-RS For in Figure 12 Ba, Bb, Bc, Bd}, CSI reference configuration information be 28 port CSI-RS account for RE be in Figure 12 Ca, Cb, Cc, Cd}, CSI reference configuration information be 38 port CSI-RS The RE taken be in Figure 12 Da, Db, Dc, Dd}, CSI reference configuration information be 48 ports The RE that CSI-RS takies is { Ea, Eb, Ec, the Ed} in Figure 12.CSI reference configuration information is 5 The RE of 8 is { Fa, Fb, Fc, the Fd} in Figure 12.

The 8 port CSI-RS that the RE that the 16 port CSI-RS consisting of UE configuration take is comprised Shared RE or newly-increased 8 RE distinguishes corresponding CSI reference configuration information and composition 16 end thereof Mouth CSI-RS takies the built-up sequence information of RE and is defined as RE information.

If it is also preferred that the left the RE that the 16 port CSI-RS that base station is UE configuration take is as shown in figure 11b Time, the RE information that 16 port CSI-RS take is as follows: p=0, q=1；Or p=1, q=0；Or p=2, Q=4, or p=4, q=2；Or p=3, q=5；Or p=5, q=3.

If the RE that takies of 16 port CSI-RS that base station is UE configuration as shown in fig. 11c time, 16 ends The RE information that mouth CSI-RS takies is as follows: p=0, q=3；Or p=3, q=0；Or p=1, q=4； Or p=4, q=1；Or p=2, q=5；Or p=5, q=2.

Such as, base station 1 is taken by the 16 port CSI-RS that the UE of signaling indicating cell 1 is its configuration RE be that the RE taken by two 8 port CSI-RS of CSI reference configuration information 0 and 1 correspondence forms. And the RE indicating two 8 port CSI-RS of UE CSI reference configuration information 0 correspondence to take is composition 16 Two 8 ports of front 8 RE, CSI reference configuration information 1 correspondences of RE shared by port CSI-RS The RE that CSI-RS takies is front 8 RE of RE shared by composition 16 port CSI-RS.Concrete, Base station can use the UE of form (0,1) indicating cell 1, if use (1,0), then shows CSI The RE that two 8 port CSI-RS of reference configuration information 1 correspondence take is composition 16 port CSI-RS Two 8 port CSI-RS of front 8 RE, CSI reference configuration information 0 correspondences of shared RE take RE be front 8 RE of RE shared by composition 16 port CSI-RS.

The RE that base station 2 is taken by the 16 port CSI-RS that the UE of signaling indicating cell 2 is its configuration RE for being taken by two 8 port CSI-RS of CSI reference configuration information 2 and 3 correspondence forms.And The RE that two 8 port CSI-RS of instruction UE CSI reference configuration information 2 correspondence take is composition 16 Two 8 ports of front 8 RE, CSI reference configuration information 3 correspondences of RE shared by port CSI-RS The RE that CSI-RS takies is front 8 RE of RE shared by composition 16 port CSI-RS.Concrete, Base station can use the UE of form (2,3) indicating cell 1, if use (3,2), then shows CSI The RE that two 8 port CSI-RS of reference configuration information 3 correspondence take is composition 16 port CSI-RS Two 8 port CSI-RS of front 8 RE, CSI reference configuration information 2 correspondences of shared RE take RE be front 8 RE of RE shared by composition 16 port CSI-RS.

The RE that base station 3 is taken by the 16 port CSI-RS that the UE of signaling indicating cell 3 is its configuration RE for being taken by two 8 port CSI-RS of CSI reference configuration information 4 and 5 correspondence forms.And The RE that two 8 port CSI-RS of instruction UE CSI reference configuration information 4 correspondence take is composition 16 Two 8 ports of front 8 RE, CSI reference configuration information 5 correspondences of RE shared by port CSI-RS The RE that CSI-RS takies is front 8 RE of RE shared by composition 16 port CSI-RS.Concrete, Base station can use the UE of form (4,5) indicating cell 1, if use (5,4), then shows CSI The RE that two 8 port CSI-RS of reference configuration information 5 correspondence take is composition 16 port CSI-RS Two 8 port CSI-RS of front 8 RE, CSI reference configuration information 4 correspondences of shared RE take RE be front 8 RE of RE shared by composition 16 port CSI-RS.

Concrete, as shown in figure 13, when it is 3 for the re-used across cells factor, three base stations are according to Figure 11 b The schematic diagram of RE shared by the 16 port CSI-RS that the UE in respective coverage configures.Wherein, Base station 1, base station 2 and base station 3 are shared by 16 port CSI-RS of the UE configuration in respective coverage With RE it is:

In each PRB the first time slot (k, l)=(8,5), (8,6), (9,5), (9,6), (2,5), (2,6), (3,5), (3,6) } corresponding RE and (k, l)={ (11,2), (11,3) of the second time slot, (10,2), (10,3), (5,2) (5,3), (4,2) (4,3) } corresponding RE； { the RE that Aa, Ab, Ac, Ad, Ae, Af, Ag, Ah} are corresponding in i.e. Figure 12.Or

Second time slot in each PRB (k, l)=(7,2), (7,3), (6,2), (6,3), (9,5), (9,6), (8,5), (8,6), (1,2), (1,3), (0,2) (0,3), (3,5), (3,6), (2,5), (2,6) } Corresponding RE；{ the RE that Ba, Bb, Bc, Bd, Be, Bf, Bg, Bh} are corresponding in i.e. Figure 12.Or

In each PRB the first time slot (k, l)={ (7,5), (7,6), (4,5), (4,6) } corresponding RE and the second time slot (k, l)=(9,2), (9,3), (8,2), (8,3), (3,2) (3,3), (2,2) (2,3), (7,5), (7,6) (4,5), (4,6) } corresponding RE；I.e. scheme { the RE that Ca, Cb, Cc, Cd, Ce, Cf, Cg, Ch} are corresponding in 11a.

The RE that the 16 port CSI-RS that the UE consisted of in community 1 is configured by base station 1 take is comprised The RE shared by 8 port CSI-RS or CSI reference configuration letter corresponding to newly-increased 8 RE Breath and composition 16 port CSI-RS thereof take the built-up sequence information of RE by signaling UE, base station 2 8 ports that the RE that the 16 port CSI-RS that the UE consisted of in community 2 configures take is comprised RE or newly-increased 8 RE shared by CSI-RS distinguish corresponding CSI reference configuration information and group thereof 16 port CSI-RS are become to take the built-up sequence information of RE by signaling UE；Base station 3 will composition The 8 port CSI-RS that the RE that takies of 16 port CSI-RS configured by the UE in community 3 is comprised Shared RE or newly-increased 8 RE distinguishes corresponding CSI reference configuration information and composition 16 end thereof Mouth CSI-RS takies the built-up sequence information of RE by signaling UE.

In the 16 port CSI-RS collocation methods that the embodiment of the present invention provides, by existing 58 ports CSI-RS forms two group of 16 port CSI-RS configuration mode, two re-used across cells or existing On the basis of the RE that CSI-RS takies, form three group of 16 port CSI-RS configuration by increasing by 8 RE Mode is three re-used across cells.Thus achieve the configuration of 16 port CSI-RS, and by signaling UE is the configuration information of the CSI-RS of its configuration, and wherein, base station is at 16 ends that notice UE is its configuration During the configuration information of mouthful CSI-RS, the tool that 16 port CSI-RS that UE is its configuration take can be notified Body RE, it is also possible to notice UE is 16 CSI reference configuration information corresponding for port CSI-RS of its configuration, Make terminal carry out CSI-RS measurement according to the configuration information received, carry out CSI according to measurement result anti- Feedback.It is achieved thereby that the configuration that is 16 port CSI feedback of 16 port CSI-RS.

Based on same inventive concept, the embodiment of the present invention additionally provides a kind of CSI-RS configuration device and sets CSI feedback method, device and the equipment that standby i.e. UE implements, owing to said method, device and equipment solve The principle of problem is similar to above-mentioned CSI-RS collocation method, therefore the enforcement of said method, device and equipment May refer to the enforcement of CSI-RS collocation method, repeat no more in place of repetition.

As shown in figure 14, for the embodiment of the present invention provide CSI-RS configuration device structural representation, can To include:

Determine unit 141, for being defined as 16 port channel state information reference signals of UE configuration CSI-RS configuration information.

Wherein, CSI-RS configuration information includes the resource element taken for 16 port CSI-RS of UE configuration RE information, the RE that described 16 port CSI-RS take include except physical downlink control channel PDCCH, RE beyond RE shared by cell special reference RS and the special RS of UE；

Transmitting element 142, for being sent as 16 port CSI-RS configuration information of its configuration to described UE.

When being embodied as, the RE that CSI-RS takies can RE shared by known CSI-RS；And The RE that the 16 port CSI-RS configured for described UE take can be for from shared by described known CSI-RS RE in optional 16 RE.

It is also preferred that the left the RE that the 16 port CSI-RS that base station is UE configuration take can be:

When being embodied as, the RE that CSI-RS takies is the RE shared by known CSI-RS；And for institute The RE that takies of 16 port CSI-RS stating UE configuration is RE shared by any two 8 ports CSI-RS Combination.

It is also preferred that the left the RE that the 16 port CSI-RS that base station is UE configuration take is:

When being embodied as, determine unit 141, specifically for being defined as described UE configuration in accordance with the following methods The RE information that takies of 16 port CSI-RS: determine the RE information that described 16 port CSI-RS take For (p, q), wherein, p is to form first 8 port CSI-RS in the RE that described 16 port CSI-RS take Shared CSI reference configuration information corresponding for RE, and p=0,1,2,3,4；Q is for forming described 16 ports CSI reference configuration corresponding for RE shared by second 8 port CSI-RS in the RE that CSI-RS takies Information, and q=0,1,2,3,4.

It is also preferred that the left the RE information that 16 port CSI-RS take is as follows: p=0, q=1；Or p=1, q=0； Or p=0, q=3；Or p=3, q=0；Or p=2, q=4, or p=4, q=2；Or p=1, q=4； Or p=4, q=1.

When being embodied as, the RE that CSI-RS takies can also include RE shared by known CSI-RS and 8 newly-increased RE.

It is also preferred that the left newly-increased RE includes the first time slot in each Physical Resource Block PRB (k, l)=(4,5), (4,6), (7,5), (7,6) } corresponding RE and the second time slot (k, l)=(4,5), (4,6), (7,5), (7,6) } right The RE answered, wherein, k be the subcarrier sequence number of the subcarrier that a Physical Resource Block PRB comprises and k by Under value 0 the most successively, 1,2 ..., 11；Each time slot that l comprises by a PRB is comprised orthogonal frequency Dividing l value the most successively in multiplexing OFDM sequence number and each time slot is 0,1,2 ... 6.

It is also preferred that the left the RE that the 16 port CSI-RS that base station is UE configuration take is for from described CSI-RS Optional 16 RE in the RE taken and 8 newly-increased RE.

Concrete, base station is that the RE that the 16 port CSI-RS that UE configures take is:

In each PRB the first time slot (k, l)={ (2,5), (2,6), (3,5), (3,6) } corresponding RE and the second time slot (k, l)=(4,2), (4,3), (5,2), (5,3), (1,2) (1,3), (0,2) (0,3), (2,5), (2,6) (3,5), (3,6) } corresponding RE；Or

When being embodied as, base station be the RE that takies of 16 port CSI-RS of described UE configuration be any two RE shared by the combination of RE shared by 8 port CSI-RS or 8 port CSI-RS and newly-increased 8 The combination of individual RE.

Concrete, base station is that the RE that the 16 port CSI-RS that UR configures take is:

Second time slot in each PRB (k, l)=(7,2), (7,3), (6,2), (6,3), (0,2) (0,3), (1,2) (1,3), (9,5), (9,6), (8,5), (8,6), (3,5), (3,6), (2,5), (2,6) } Corresponding RE；Or

Second time slot in each PRB (k, l)=(11,2), (11,3), (10,2), (10,3), (5,2) (5,3), (4,2) (4,3), (9,5), (9,6), (8,5), (8,6), (3,5), (3,6), (2,5), (2,6) } Corresponding RE；Or

In each PRB the first time slot (k, l)={ (7,5), (7,6), (4,5), (4,6) } corresponding RE and the second time slot (k, l)=(9,2), (9,3), (8,2), (8,3), (3,2) (3,3), (2,2) (2,3), (7,5), (7,6) (4,5), (4,6) } corresponding RE；

During it is also preferred that the left be embodied as, determine unit 141, may be used for being defined as in accordance with the following methods described The RE information that 16 port CSI-RS of UE configuration take: determine CSI corresponding to newly-increased 8 RE Reference configuration information is 5；Determine RE information that described 16 port CSI-RS take for (p, q), wherein, p For forming front 8 CSI reference configuration information corresponding for RE in the RE that described 16 port CSI-RS take, And p=0,1,2,3,4,5；Q is that in the RE that the described 16 port CSI-RS of composition take, rear 8 RE are corresponding CSI reference configuration information, and q=0,1,2,3,4,5.

It is also preferred that the left 8 newly-increased CSI reference configuration information corresponding for RE are 5；And described 16 ports The RE information that CSI-RS takies is as follows: p=0, q=1；Or p=1, q=0；Or p=0, q=3；Or Person p=3, q=0；Or p=2, q=4, or p=4, q=2；Or p=1, q=4；Or p=4, q=1； Or p=3, q=5；Or p=5, q=3；Or p=2, q=5；Or p=5, q=2.

When being embodied as, the CSI-RS that the embodiment of the present invention provides configures device, it is also possible to including:

Receive unit, for receiving the CSI feedback information that UE sends, CSI feedback information be UE according to CSI-RS configuration information carries out what the measurement result of CSI-RS measurement determined.

For convenience of description, above each several part is divided by function and is respectively described for each module (or unit). Certainly, when implementing the present invention can the function of each module (or unit) at same or multiple softwares or Hardware realizes.

When being embodied as, above-mentioned CSI-RS configuration device can be arranged in a base station, base station complete CSI-IS Configuration.

As shown in figure 15, UE implements the implementing procedure schematic diagram of CSI feedback method, can include following step Rapid:

S151, reception CSI-RS configuration information.

Wherein, CSI-RS configuration information includes the resource element RE information that 16 port CSI-RS take, and The RE that 16 port CSI-RS take includes except physical downlink control channel PDCCH, cell-specific are with reference to letter RE beyond RE shared by number special RS of RS and UE；

S152, according to CSI-RS configuration information, CSI-RS is measured.

S153, carry out CSI feedback according to measurement result.

Concrete, UE according to measurement result to the CSI of base station feedback by order instruction (Rank Indicator, RI), Pre-coding matrix instruction (PrecodingMatrix Indicator, PMI) and channel quality instruction (Channel Quality Indicator, CQI) composition.

As shown in figure 16, the structural representation of CSI feedback device provided for the embodiment of the present invention, permissible Including:

Receive unit 161, for receiving channel state information reference signal CSI-RS configuration information, described CSI-RS configuration information includes the resource element RE information that 16 port CSI-RS take, described 16 ports The RE that CSI-RS takies includes except physical downlink control channel PDCCH, cell special reference RS RE beyond RE shared by RS special with UE；

Measuring unit 162, for measuring CSI-RS according to described CSI-RS configuration information；

Feedback unit 163, for carrying out CSI feedback according to the measurement result of described measuring unit 162.

For convenience of description, above each several part is divided by function and is respectively described for each module (or unit). Certainly, when implementing the present invention can the function of each module (or unit) at same or multiple softwares or Hardware realizes.When being embodied as, above-mentioned CSI feedback device can be arranged on UE.

Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or meter Calculation machine program product.Therefore, the present invention can use complete hardware embodiment, complete software implementation or knot The form of the embodiment in terms of conjunction software and hardware.And, the present invention can use and wherein wrap one or more Computer-usable storage medium containing computer usable program code (include but not limited to disk memory, CD-ROM, optical memory etc.) form of the upper computer program implemented.

The present invention is with reference to method, equipment (system) and computer program product according to embodiments of the present invention The flow chart of product and/or block diagram describe.It should be understood that can by computer program instructions flowchart and / or block diagram in each flow process and/or flow process in square frame and flow chart and/or block diagram and/ Or the combination of square frame.These computer program instructions can be provided to general purpose computer, special-purpose computer, embedding The processor of formula datatron or other programmable data processing device is to produce a machine so that by calculating The instruction that the processor of machine or other programmable data processing device performs produces for realizing at flow chart one The device of the function specified in individual flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.

These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory Instruction produce and include the manufacture of command device, this command device realizes in one flow process or multiple of flow chart The function specified in flow process and/or one square frame of block diagram or multiple square frame.

These computer program instructions also can be loaded in computer or other programmable data processing device, makes Sequence of operations step must be performed to produce computer implemented place on computer or other programmable devices Reason, thus the instruction performed on computer or other programmable devices provides for realizing flow chart one The step of the function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.

Although preferred embodiments of the present invention have been described, but those skilled in the art once know base This creativeness concept, then can make other change and amendment to these embodiments.So, appended right is wanted Ask and be intended to be construed to include preferred embodiment and fall into all changes and the amendment of the scope of the invention.

Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.

Claims

1. a CSI-RS collocation method, it is characterised in that including:

2. the method for claim 1, it is characterised in that the RE that described CSI-RS takies is for Know the RE shared by CSI-RS；And the RE that takies of 16 port CSI-RS for described UE configuration For 16 RE optional from the RE shared by described known CSI-RS.

3. method as claimed in claim 2, it is characterised in that described 16 port CSI-RS take RE is:

4. the method for claim 1, it is characterised in that the RE that described CSI-RS takies is for Know the RE shared by CSI-RS；And the RE that takies of 16 port CSI-RS for described UE configuration The combination of RE shared by any two 8 ports CSI-RS.

5. method as claimed in claim 4, it is characterised in that described 16 port CSI-RS take RE is:

6. method as claimed in claim 4, it is characterised in that described 16 port CSI-RS take RE is:

7. method as claimed in claim 4, it is characterised in that be defined as described UE in accordance with the following methods The RE information that 16 port CSI-RS of configuration take:

8. the method for claim 1, it is characterised in that the RE that described CSI-RS takies includes RE shared by known CSI-RS and 8 newly-increased RE.

9. method as claimed in claim 8, it is characterised in that newly-increased RE includes each physical resource In block PRB the first time slot (k, l)={ (4,5), (4,6), (7,5), (7,6) } corresponding RE and the second time slot (k, l)={ (4,5), (4,6), (7,5), (7,6) } corresponding RE, wherein, k is that a Physical Resource Block PRB comprises The subcarrier sequence number of subcarrier and k value 0 the most successively, 1,2 ..., 11；L is a PRB bag In each time slot the comprised orthogonal frequency division multiplex OFDM sequence number contained and each time slot, l takes the most successively Value is 0,1,2 ... 6.

10. method as claimed in claim 9, it is characterised in that 16 ports configured for described UE The RE that CSI-RS takies is the RE taken from described CSI-RS and optional 8 newly-increased RE 16 RE.

11. methods as claimed in claim 9, it is characterised in that 16 ports configured for described UE The RE that CSI-RS takies is the combination of RE shared by any two 8 ports CSI-RS or 8 ports The combination of RE shared by CSI-RS and newly-increased 8 RE.

12. the method as described in claim 9,10 or 11, it is characterised in that described 16 port CSI-RS The RE taken is:

13. methods as claimed in claim 10, it is characterised in that be defined as described in accordance with the following methods The RE information that 16 port CSI-RS of UE configuration take:

14. the method for claim 1, it is characterised in that also include:

15. a CSI-RS configures device, it is characterised in that including:

16. devices as described in right 15, it is characterised in that the RE that described CSI-RS takies is known RE shared by CSI-RS；And for described UE configuration the RE that takies of 16 port CSI-RS for from Optional 16 RE in RE shared by described known CSI-RS.

17. device as claimed in claim 16, it is characterised in that described 16 port CSI-RS take RE be:

18. devices as claimed in claim 15, it is characterised in that the RE that described CSI-RS takies is RE shared by known CSI-RS；And the RE that takies of 16 port CSI-RS for described UE configuration The combination of RE shared by any two 8 ports CSI-RS.

19. devices as claimed in claim 18, it is characterised in that described 16 port CSI-RS take RE be:

20. devices as claimed in claim 18, it is characterised in that described 16 port CSI-RS take RE be:

21. devices as claimed in claim 18, it is characterised in that

22. devices as claimed in claim 15, it is characterised in that the RE bag that described CSI-RS takies Include the RE shared by known CSI-RS and 8 newly-increased RE.

23. devices as claimed in claim 22, it is characterised in that newly-increased RE includes that each physics provides In the block PRB of source the first time slot (k, l)={ (4,5), (4,6), (7,5), (7,6) } corresponding RE and the second time slot (k, l)={ (4,5), (4,6), (7,5), (7,6) } corresponding RE, wherein, k is that a Physical Resource Block PRB comprises The subcarrier sequence number of subcarrier and k value 0 the most successively, 1,2 ..., 11；L is a PRB bag In each time slot the comprised orthogonal frequency division multiplex OFDM sequence number contained and each time slot, l takes the most successively Value is 0,1,2 ... 6.

24. devices as claimed in claim 23, it is characterised in that 16 ports configured for described UE The RE that CSI-RS takies is the RE taken from described CSI-RS and optional 8 newly-increased RE 16 RE.

25. devices as claimed in claim 23, it is characterised in that 16 ports configured for described UE The RE that CSI-RS takies is the combination of RE shared by any two 8 ports CSI-RS or 8 ports The combination of RE shared by CSI-RS and newly-increased 8 RE.

26. devices as described in claim 23,24 or 25, it is characterised in that described 16 port CSI-RS The RE taken is:

27. devices as claimed in claim 24, it is characterised in that

28. devices as claimed in claim 15, it is characterised in that also include:

29. a base station, it is characterised in that include described in claim 15～28 any claim CSI-RS configures device.

30. 1 kinds of CSI feedback methods, it is characterised in that including:

According to described CSI-RS configuration information, CSI-RS is measured；

CSI feedback is carried out according to measurement result.

31. 1 kinds of CSI feedback devices, it is characterised in that including:

32. 1 kinds of subscriber equipmenies, it is characterised in that include the CSI feedback device described in claim 31.