CN104662944B - For executing the method and terminal that measure - Google Patents

Abstract

One of this specification is open to be provided for executing the method measured.Include step for executing the method measured：It is received from serving cell and is used for the first of the serving cell support information for measuring sub-frame mode and the CRS of cell specific reference signal (CRS) and the second neighboring community in relation to the first neighboring community；With being received from serving cell sub-frame mode is measured for the second of the first and second neighboring communities.Herein, both serving cell and the first neighboring community are the assailant's cells relative to victim's cell (it is the second neighboring community), and when the CRS of serving cell conflicts with the CRS of the second neighboring community, but the CRS of the first neighboring community, when do not conflict with the CRS of the second neighboring community, the second of reception, which measures sub-frame mode, can be based on almost blank subframe (ABS) mode setting.This method may include measuring sub-frame mode based on second to be used to execute the step of measuring to the first and second neighboring communities.

Description

For executing the method and terminal that measure

Technical field

The present invention relates to mobile communication.

Background technology

Third generation collaborative project (3GPP) long term evolution (LTE) come from Universal Mobile Telecommunications System (UMTS) development is drawn Enter as 3GPP versions 8.3GPP LTE use orthogonal frequency division multiple access (OFDMA) in the downlink, and in the uplink It uses single-carrier frequency division multiple access (SC-FDMA).3GPP LTE are used with the multiple-input and multiple-output (MIMO) for reaching four antennas. In recent years, the advanced 3GPP LTE (LTE-A) come from 3GPP LTE development are described.

Such as in 3GPP TS 36.211V10.4.0 (2011-12), " Evolved Universal Terrestrial Radio Access(E-UTRA)；Physical Channels and Modulation (Release 10) (evolution it is general Terrestrial radio is electrically accessed (E-UTRA)；Physical channel and modulation (version 10)) " disclosed in, the physical channel of LTE can divide For downlink channel, that is, PDSCH (physical down link sharing channel) and PDCCH (physical downlink control channel), and Uplink channel, that is, PUSCH (physical uplink shared channel) and PUCCH (physical uplink control channel).

Meanwhile in next generation mobile communication system, the desired cellulor with cellulor covering radius is added In the coverage area of macrocellular.

But such cellulor may cause to further increase in terms of interference, and it is thus impossible to be appropriately carried out It measures.

Invention content

Therefore, it is an object of the invention to solve problems noted above.

Technical solution

In order to realize above-mentioned purpose, according to an aspect of the invention, there is provided a kind of executing the method measured. This method may include：It is received from serving cell and measures sub-frame mode and related first and second phase for the first of serving cell The help information of the cell specific reference signal (CRS) of adjacent cell；It is received from serving cell and is used for the first and second neighboring communities Second measure sub-frame mode.Herein, the second neighboring community is attacked if serving cell and the first neighboring community correspond to The person's of hitting cell, the second neighboring community correspond to victim's cell, if the CRS of the serving cell and CRS of the second neighboring community is rushed It dashes forward, and if the CRS of the first neighboring community does not conflict with the CRS of the second neighboring community, second received measures subframe mould Formula is based on almost blank subframe (ABS) mode setting.This method may include：Sub-frame mode is measured based on second to execute for the One and second neighboring community measurement.

In order to realize above-mentioned purpose, according to another aspect of the present invention, provide a kind of for executing measurement User equipment.The user equipment may include：Receiver, for receives for serving cell first measure sub-frame mode with The help information of cell specific reference signal (CRS) in relation to the first and second neighboring communities and for first and second adjacent small The second of area measures sub-frame mode.Herein, if serving cell and the first neighboring community correspond to the second neighboring community Assailant's cell, the second neighboring community corresponds to victim's cell, if the CRS of the CRS of serving cell and the second neighboring community Conflict, and if the CRS of the first neighboring community does not conflict with the CRS of the second neighboring community, it is adjacent for first and second The second of the reception of cell measures sub-frame mode and is based on almost blank subframe (ABS) mode setting.The user equipment may include： Controller, for measuring measurement of the sub-frame mode execution for the first and second neighboring communities based on second.

The the second measurement sub-frame mode received can be set to the subset of abs mode.Second received measures subframe mould Formula can be set to identical as abs mode.

The cell identifier (ID) of serving cell and the cell ID of the second neighboring community 6 remainders of mould having the same, and the The cell ID of one serving cell has different 6 remainders of mould.

The CRS of first neighboring community does not conflict with the CRS of serving cell.

Beneficial effect

According to an aspect of the present invention, more efficiently and measurement can be accurately carried out.

Description of the drawings

Fig. 1 shows wireless communication system.

Fig. 2 shows the antenna structures of typical multiaerial system.

Fig. 3 show in third generation collaborative project (3GPP) long term evolution (LTE) based on frequency division duplex (FDD) radio The structure of frame.

Fig. 4 is shown in 3GPP LTE for a uplink or the example of the resource grid of downlink time slots.

Fig. 5 shows the structure of downlink subframe.

Fig. 6 shows the structure of the uplink subframe in 3GPP LTE.

Fig. 7 shows the example for comparing single-carrier system and carrier aggregation system.

Fig. 8 shows that the specific reference signal of cell (CRS) is mapped when base station (BS) uses an antenna port To the example of the pattern of resource block (RB).

Fig. 9 a show measurement and measurement report procedure.

Fig. 9 b show channel status information reports process.

Figure 10 shows the example of interference problem between cells.

Figure 11 a show the example of the Inter-Cell Interference Coordination (eICIC) for solving the interference enhancing between BS.

Figure 11 b show to exchange the example with the almost relevant information of blank subframe (ABS) subframe.

Figure 12 is the block diagram of the structure for the demonstration for showing user equipment (UE).

Figure 13 a show include different types of network of macrocellular and cellulor example, Figure 13 b show Figure 13 a's The example and Figure 13 c that CRS conflicts under environment show the process of the CRS Interference Cancellations of network support UE.

Figure 14 shows the example changed in the environment of Figure 13 a.

Figure 15 is the block diagram for showing wireless communication system according to an embodiment of the invention.

Specific implementation mode

Be described below the present invention is based on third generation collaborative project (3GPP) long term evolution (LTE) or advanced 3GPP LTE (LTE-A) is applicable in.This is used for the purpose of the purpose of demonstration, and therefore, and the present invention is suitable for various communication systems.With Under description in, LTE and/or LTE-A are commonly referred to as LTE.

In addition, the term used here is used for the purpose of describing the purpose of specific embodiment, and it is not intended to limit The present invention.Other than in addition limiting, all terms used here have and people in the art of the present invention Member is generally understood identical meaning, and will be not interpreted as having exceedingly comprehensive meaning, is also not interpreted as having exceedingly The meaning of diminution.If the technical term used here is wrong, and therefore, fail the skill for accurately indicating the present invention Art idea should then be replaced with the technical term for allowing those skilled in the art properly to understand.The general term used here is answered Definition of the basis in dictionary or context is explained, and should not be construed as the meaning exceedingly reduced.

As utilized herein, singulative is intended to include equally plural form, unless context indicates expressly otherwise. In this application, it should be appreciated that term, such as " comprising " or " having " etc. are intended to indicate institute disclosed in the present specification There are several constituent element either the presence of several steps and to be not intended to exclude certain constituent element or certain steps may not It can further existing possibility in the presence of either additional constituent element or step.

It should be understood that although term " first " and " second " are used here to describe various constituent element, these Constituent element should not be limited by these terms.These terms are used only for distinguishing a constituent element and another composition member Part.For example, the first constituent element is properly termed as the second constituent element, and similarly, the scope of the present invention is not departed from, second group It is properly termed as the first constituent element at element.

When constituent element refer to for " connection " or " access " another constituent element when, this also refer to its directly It is connected to or accesses another constituent element, however, it is to be understood that there may be the constituent element being inserted into.On the other hand, work as group At element refer to for " being directly connected to " or " being directly accessed " another constituent element when, it should be appreciated that not exist be inserted into Constituent element.

The embodiment of the invention demonstrated will hereinafter be described with reference to the accompanying drawings.It should be noted that identical attached drawing mark Note indicates identical constituent element in the accompanying drawings, and if it is considered making subject of the present invention indigestion, the present invention Known structure or the detailed description of function will be omitted here.In the following description, since they will make the hair The bright indigestion in terms of unnecessary details, well known function or structure are not described in detail.It will be only in the meaning of description Aspect, and not for the purpose of limitation, consider the embodiment of demonstration, and it is not intended to limit the technical scope of the present invention.But It is, it should be appreciated that the present invention is not limited to disclosed embodiment, still, on the contrary, it is intended to cover be included in appended right and want The various modifications in spirit and scope and equivalent scheme asked.

The term " base station (BS) " being used below is typically the fixed station communicated with wireless device, and is properly termed as Another term, such as, evolution-node B (e node B), the node-b (eNB) of evolution, base-station transceiver system (BTS), Access point etc..

In addition, the term " user equipment (UE) " being used below can be fixed or mobile, and can claim For another term, such as, equipment, wireless device, terminal, movement station (MS), user terminal (UT), subscriber station (SS), movement Terminal (MT) etc..

Fig. 1 shows wireless communication system.

With reference to figure 1, wireless communication system includes at least one base station (BS) 20.Corresponding BS20 is to specific geographic area (commonly referred to as cell) 20a, 20b and 20c provide communication service.The cell can be divided into multiple regions (being known as sector).

UE generally falls into a cell.Cell belonging to UE is referred to as serving cell.Communication clothes are provided to serving cell The BS of business is referred to as service BS.Since wireless communication system is cellular system, it is understood that there may be adjacent to the different of serving cell Cell.The different cells for being adjacent to serving cell are referred to as neighboring community.The BS quilts of communication service are provided neighbouring cell Referred to as neighbor bss.Serving cell and neighboring community are determined relatively relative to UE.

Hereinafter, downlink implies from BS 20 to UE 10 communication, and uplink is implied from UE 10 to BS 20 communication.In the downlink, transmitter can be a part of BS 20, and receiver can be one of UE 10 Point.In the uplink, transmitter can be a part of UE 10, and receiver can be a part of BS 20.

Meanwhile wireless communication system can be multiple-input and multiple-output (MIMO) system, multiple input single output (MISO) system, Any one of single-input single-output (SISO) system or single input and multi-output (SIMO) system.Mimo system uses multiple Emit (Tx) antenna and multiple reception (Rx) antennas.MISO system uses multiple Tx antennas and a Rx antenna.SISO systems make With a Tx antenna and a Rx antenna.SIMO systems use a Tx antenna and multiple Rx antennas.Hereinafter, Tx antennas are dark Refer to the physics or logical antenna for sending a signal either data flow.Rx antennas imply for receive a signal or The physics or logical antenna of data flow.

Fig. 2 shows the antenna structures of typical multiaerial system.

As shown in Fig. 2, from only using the situation of mutiple antennas different in transmitter or receiver, if transmitting (Tx) it is N that the number of antenna and the number of reception (Rx) antenna respectively increase simultaneously_TAnd N_R, then channel transfer capability is theoretically Increase proportional to the number of antenna.Therefore, data transfer rate (or transmission rate) can improve, and spectrum efficiency can To significantly improve.

As channel transfer capability increases, data transfer rate can theoretically be improved through the rate to be described below Advance the speed R_iIt is multiplied by the maximum data transfer rate R of the situation for using individual antenna_oThe value of acquisition.That is, example Such as, 4 times higher than individual antenna system can be theoretically obtained using the MIMO communication system of 4 Tx antennas and 4 Rx antennas Data transfer rate.

Once due in the theoretic ability raising of mid-term proof multiaerial system the 1990s, energetically grinding Study carefully the various technologies for improving actual data transfer rate.Among them, several technologies have been suitable for various wireless communications Standard, such as 3G (Third Generation) Moblie, next generation wireless lan etc..

[formula 1]

R_i=min (N_T,N_R)

Energetically multiple antennas is studied in various aspects so far, such as, in various letters It is studied with the relevant information theory of the calculating of multi-antenna communication capability etc. under road environment and multiple access environments, to multiple antennas system The measurement of the wireless channel of system and its model are studied, and when to sky for improving transmission reliability and data transfer rate Signal processing technology is studied.

In the structure of the user equipment (UE) with conventional mimo channel environment, into the Rx signals of each Rx antennas It can be indicated by formula 2 below.

[formula 2]

Here, the channel between each of Tx antennas and Rx antennas can be identified according to Tx/Rx antenna index.From Tx The channel of antenna j to Rx antenna i approach is by h_ijIt indicates.In the case of using pre-coding scheme in the transmission similar to LTE, Tx Signal x can be indicated by formula 3 below.

[formula 3]

Here, the h of pre-coding matrix W_ijIndicate the weight between i-th of Tx antenna and j-th of Tx information.This In the case of, if the Tx power of each Tx signals is by P₁, P₂..., P_NTIndicate that then there is the transmission information of the Tx power of adjustment It can be indicated by the diagonal matrix P of formula 4 below.

[formula 4]

Meanwhile wireless communication system can briefly be divided into system based on frequency division duplex (FDD) scheme and based on when Divide the system of duplexing (TDD) scheme.In FDD schemes, uplink transmission and downlink transmission are implemented, while being occupied not Same frequency band.In TDD schemes, uplink transmission and downlink transmission are realized in the period of different, while being occupied identical Frequency band,.Channel response based on TDD schemes is actually reciprocal.This implies downlink channel response in given frequency It is approximately the same with uplink channel responses in rate domain.Therefore, in the wireless communication system based on TDD, downlink channel Response can be obtained advantageously from uplink channel responses.In TDD schemes, Whole frequency band is subdivided by time into uplink Transmission and downlink transmission, and therefore, the downlink transmission executed by BS and the uplink transmission executed by UE can With simultaneous realization.In uplink transmission and downlink transmission based in the TDD system of sub-frame division, uplink is transmitted It is executed in different subframes with downlink transmission.

Hereinafter, LTE system will be described in further derail.

Fig. 3 shows the structure based on FDD radio frames in 3GPP LTE.

The radio frame of Fig. 3 can be in 3GPP TS 36.211V10.4.0 (2011-12), " Evolved Universal Terrestrial Radio Access(E-UTRA)；Physical Channels and Modulation(Release 10) (universal terrestrial radio of evolution is electrically accessed (E-UTRA)；Physical channel and modulation (version 10)) " chapters and sections 5 in find.

With reference to figure 3, radio frame is made of 10 subframes.One subframe is made of two time slots.It is included in radio frame In time slot by with timeslot number 0 to 19 number.It is Transmission Time Interval (TTI) to send the timing definition that a subframe needs.TTI It can be the scheduling unit for data transmission.For example, a radio frame can be with the length of 10 milliseconds (ms), a son Frame can be with the length of 1ms, and a time slot can be with the length of 0.5ms.

The structure of radio frame is used for the purpose of the purpose of demonstration, and therefore, is included in the number of subframe in radio frame Mesh or the number for being included in time slot in subframe can differently change.

Meanwhile a time slot may include multiple OFDM symbols.Number including OFDM symbol in one time slot can To depend on cyclic prefix (CP) variation.

Fig. 4 is shown in 3GPP LTE for a uplink or the example of the resource grid of downlink time slots.

With reference to figure 4, a uplink time slot includes multiple Orthodoxy Frequency Division Multiplexs (OFDM) symbol in the time domain, And include N in frequency domain_RBA resource block (RB).For example, in LTE system RB number, that is, N_RBCan be 6 to Any one of 110 ranges are worth.

Although here its describe a RB for example include by the time domain 7 OFDM symbols and in frequency domain 7 × 12 resource elements of 12 sub- carrier wave compositions, but the number of OFDM symbol and the number of subcarrier are unrestricted in RB In this.The number of the number or OFDM symbol that are included in the subcarrier in RB can differently change.That is, OFDM is accorded with Number number can depend on above-mentioned CP length change.Especially, it in 3GPP LTE, limits so that in normal CP In the case of, 7 OFDM symbols are included in a time slot, and in the case of the CP of extension, and 6 OFDM symbols are included in one In a time slot.

OFDM symbol indicates a symbol period.OFDM symbol can also be known as SC-FDMA symbols, OFDMA according to system Symbol or symbol period.As resource allocation unit, RB is included in multiple subcarriers in frequency domain.It is included in uplink The number N of RB in channel time slot_ULDepending on the uplink transmission bandwidth defined in the cell.Each element on resource grid Referred to as resource element.

Meanwhile in the number of an OFDM symbol sub-carriers can be from 128,256,512,1024,1536 and 2048 In choose.

It is readily applicable to for downlink chain for the resource grid of a uplink time slot in the 3GPP LTE of Fig. 4 The resource grid of channel time slot.

Fig. 5 shows the structure of downlink subframe.

The situation for example by using normal CP is shown in FIG. 5,7 OFDM symbols include in one time slot.But Number including OFDM symbol in one time slot can depend on CP length and change.That is, as described above, according to 3GPP TS 36.211V10.4.0, in the case of normal CP, a time slot includes 7 OFDM symbols, and the case where extending CP Under, a time slot includes 6 OFDM symbols.

Resource block (RB) is resource allocation unit, and includes multiple subcarriers in one time slot.For example, if one Time slot includes in the time domain 7 OFDM symbols, and RB includes 12 subcarriers in frequency domain, then a RB may include 7 × 12 resource elements (RE).

Downlink (DL) subframe is divided into control zone and data field in the time domain.Control zone is included in subframe One time slot until first three OFDM symbol.But the number for being included in the OFDM symbol in control zone can change.Under physics Uplink Control Channel (PDCCH) and other control channels are assigned to control zone, and physical down link sharing channel (PDSCH) it is assigned to data field.

In 3GPP LTE, physical channel can be divided into data channel and control channel.Data channel can be physics Downlink sharied signal channel (PDSCH) and physical uplink shared channel (PUSCH).Control channel can be physical down chain Road control channel (PDCCH), physical control format indicator channel (PCFICH), Physical Hybrid ARQ Indicator channel (PHICH) and physical uplink control channel (PUCCH).

The PCFICH sent in the first OFDM symbol of subframe is carried about for control channel transmission in the burst OFDM symbol number (that is, size of control zone) control format indicator (CFI).Wireless device receives related first The CFI of PCFICH, and then monitor PDCCH.

Different from PDCCH, PCFICH does not use blind decoding, and is sent out by using the fixed PCFICH resources of subframe It send.

PHICH carries affirmative acknowledgement (ACK)/negative response for uplink mixed automatic repeat request (HARQ) (NACK) signal.The ack/nack signal of uplink (UL) data for the PUSCH in relation to being sent by wireless device exists PHICH is upper to be sent.

In first four OFDM symbol of the Physical Broadcast Channel (PBCH) in the second time slot of the first subframe of radio frame It is sent.PBCH carries to communicate necessary system information between wireless device and BS.The system letter sent via PBCH Breath is known as Master Information Block (MIB).In contrast, the system information sent on PDCCH is known as system information block (SIB).

Physical downlink control channel (PDCCH) can carry the resource allocation of downlink sharied signal channel (DL-SCH) And transformat, the resource allocation information of uplink shared channel (UL-SCH), the paging letter in relation to paging channel (PCH) Breath, the system information in relation to DL-SCH, the resource allocation of high-layer control message are such as rung via the random access that PDSCH is sent It answers, the transmission power control command for being included in the special UE in any UE groups, activation (VoIP) of internet voice etc.. Multiple PDCCH can be sent in control zone, and UE can monitor multiple PDCCH.PDCCH is continuous at one or several It is sent in the polymerization of control channel element (CCE).CCE is for being provided with the code rate based on radio channel state The logical allocation unit of PDCCH.CCE corresponds to multiple resource element groups.The digit root of the format of PDCCH and available PDCCH It is determined according to the correlation between the number of CCE and the code rate provided by CCE.

It is known as down link control information (DCI) via the PDCCH control information sent.DCI may include the money of PDSCH Source distribution (this is known as downlink (DL) license), the resource allocation (this is known as uplink (UL) license) of PUSCH, any Activation (VoIP) in UE groups for the emissive power control command collection and/or voice over internet protocol of dedicated UE.

BS determines PDCCH formats according to the down link control information (DCI) of UE to be sent to, and by cyclic redundancy school It tests (CRC) and is attached to control information.CRC (is known as radio net according to the owner or purposes of PDCCH with unique identifier Temporary identifier (RNTI)) it is masked.If PDCCH is used for specific UE, the unique identifier of UE is (for example, cell RNTI (C-RNTI)) CRC can be masked into.Alternatively, if PDCCH is used for paging message, Paging Indicator identifier (example Such as, paging RNTI (P-RNTI)) CRC can be masked into.If PDCCH is used for system information block (SIB), system information mark CRC can be masked by knowing symbol and system information RNTI (SI-RNTI).In order to indicate random access response, that is to say, that be used for The response of the random access preamble transmission of UE, random access RNTI (RA-RNTI) can be masked into CRC.

In 3GPP LTE, blind decoding is for detecting PDCCH.Blind decoding is desired identifier by the PDCCH from reception It goes to shelter in the cyclic redundancy check (CRC) of (being known as candidate PDCCH), to determine whether PDCCH by executing crc error verification It is the scheme of the control channel of their own.BS determines PDCCH formats according to the DCI of wireless device to be sent to, and CRC is attached to Information is controlled, and unique identifier (is known as by radio network temporary identifier according to the owner of PDCCH or purposes (RNTI)) masking is to CRC.

Uplink channel includes PUSCH, PUCCH, detection reference signal (SRS) and Physical Random Access Channel (PRACH)。

Fig. 6 shows the structure of the uplink subframe in 3GPP LTE.

With reference to figure 6, uplink subframe can be divided into control zone and data field.For carrying uplink control information Physical uplink control channel (PUCCH) be assigned to control zone.Physical uplink link sharing for carrying data is believed (PUSCH) is assigned to data field in road.

PUCCH for a UE is in subframe with RB to distribution.Belong to RB couples of RB in the first time slot and the second time slot Each of in occupy different subcarriers.Frequency that RB couples of the RB of PUCCH is occupied is distributed it on time slot edge by belonging to Variation.This is referred to as the RB for distributing to PUCCH to being the frequency hopping at time slot edge.

Since UE sends uplink control information on time basis via different subcarriers, it is possible to obtain frequency Rate diversity gain.M is the location index for indicating to distribute to RB pairs of PUCCH of logical frequency domain position in subframe.

The example of the uplink control information sent on PUCCH includes mixed automatic repeat request (HARQ), affirmative Response (ACK)/negative response (NACK) indicates that (it is for the channel state information (CSI) of DL channel status, scheduling request (SR) UL radio resources allocations are asked) etc..

PUSCH is mapped to uplink shared channel (UL-SCH), is transport channel.It is sent via PUSCH upper Uplink data can be transfer block, be the data block of the UL-SCH for being sent during TTI.Transfer block can be user Information.In addition, uplink data can be the data of multiplexing.The data of multiplexing can be controlled by multiplexing Information processed and for UL-SCH transfer block obtain.May include channel with the example of the control information of data multiplex Quality indicator (CQI), precoding matrix indicators (PMI), HARQ, order designator (RI) etc..Alternatively, uplink Data can be only made of control information.

Carrier aggregation system will now be described.

Fig. 7 shows the example for comparing single-carrier system and carrier aggregation system.

With reference to figure 7 (a), single-carrier system in uplink and downlink only supports UE one carrier wave.Though Right carrier wave can have various bandwidth, but only one carrier wave is assigned to UE.Meanwhile polymerizeing in (CA) system in carrier wave, it is multiple Component carrier (CC), that is, DL CC A can distribute to UE to C and UL CC A to C.CC implies the load used in CA systems Wave, and carrier wave can be simply referred as.For example, three 20MHz CC can be distributed to distribute 60MHz bandwidth to UE.

Carrier aggregation system can be divided into the mutually continuous continuous carrier paradigmatic system of carrier wave and carrier wave is separated from each other Discontinuous carrier paradigmatic system.Hereinafter, when it is referred to simply as carrier aggregation system, should be interpreted to wrap Include two situations of continuous CC and discontinuous CC.The number of the CC of polymerization can differently be set between downlink and uplink It sets.Symmetrical polymerization is realized when the number of DLCC is equal to the number of UL CC.When the number of DL CC is different from the number of UL CC Asymmetric Polymerization is realized when purpose.

CC can be directly used in and be used in legacy system as target when polymerizeing one or more CC Bandwidth, in order to provide with legacy system backward compatibility.For example, 3GPPLTE systems can support with 1.4MHz, 3MHz, 5MHz, The carrier wave of 10MHz, 15MHz and 20MHz bandwidth, and 3GPP lte-a systems can be by using each of 3GPP LTE systems Carrier wave configures 20MHz or higher broadband as CC.It alternatively, can be by defining new bandwidth without directly making Broadband is configured with the bandwidth of legacy system.

The frequency band of wireless communication system is divided into multiple carrier frequencies.Here, carrier frequency implies the centre frequency of cell. Hereinafter, cell can imply down-link frequencies resource and uplink frequency resource.Alternatively, cell can also be implied The combination of down-link frequencies resource and selectable uplink frequency resource.In general, if not considering that carrier wave polymerize (CA), Uplink and down-link frequencies resource can exist in pairs always in one cell.

In order to send and receive grouped data via specific cell, UE must complete the configuration of specific cell first. Here, the state for fully receiving the system information needed for the data transmission and reception of cell is implied in configuration.For example, should Configuration may include needing to join for common physical layer parameter necessary to data transmission and reception, media access control (MAC) layer Number, or specifically to operate the whole process of necessary parameter in radio resource control (RRC) layer.Once only receiving Indicate the information that can send of grouped data, configure completion cell be in can send and receive immediately grouping state it In.

Can exist with activation or dead status in the cell for completing its configuration status.Here, activation, which is implied, holds Row data transmission either receives or among preparation state.UE can monitor or receive the control letter of the cell of activation Road (that is, PDCCH) and data channel (that is, PDSCH) resource (for example, frequency, time etc.) for confirmation for distributing to UE.

Deactivate imply the transmission of business datum either reception be impossible and minimal information measurement or transmission/ Reception is possible.UE can be received from deactivated cell for being grouped the system information (SI) for receiving and needing.On the other hand, UE It does not monitor or receives the control channel (that is, PDCCH) for deactivating cell and data channel (that is, PDSCH) is for confirmation distributes to The resource (for example, frequency, time etc.) of UE.

Cell can be divided into main plot, secondary cell, serving cell etc..

The cell to work in dominant frequency is implied in main plot, and also implies and execute initial connection establishment process or connection weight Newly establish the cell of process, or the main plot being shown functionally in handoff procedure cell.

Secondary cell implies the cell to work in auxiliary frequency, and when RRC connections are configured when establishing, and for carrying For additional radio resource.

When carrier wave polymerization be not configured when or when UE can not provide carrier wave polymerization when, serving cell by with It sets with main plot.If carrier wave polymerization is configured, term " serving cell " is used to indicate to be allocated to the cell of UE, and can be with It is made of multiple cells.One serving cell can be made of a DL CC or a pair { DL CC, UL CC }.Multiple services Cell may include the set being made of the one or more of main plot and all secondary cells.

As described above, different from single-carrier system, carrier aggregation system can support multiple component carriers (CC), that is, It says, multiple serving cells.

Carrier aggregation system can support cross carrier wave to dispatch.Cross carrier wave scheduling is able to carry out by via specific CC The resource allocation for the PDSCH that the PDCCH of transmission is sent using different carrier wave, and/or via except being substantially linked to specific CC CC other than another CC send PUSCH resource allocation dispatching method.That is, PDCCH and PDSCH can be through Sent by different DL CC, and PUSCH can via except be linked to send on it include the PDCCH that UL permits DL CC UL CC other than UL CC send.Thus, in the system for supporting cross carrier wave scheduling, multi-carrier indicator report is needed to be used for Send the specific DL CC/UL CC that PDCCH provides it PDSCH/PUSCH of control information.Field including multi-carrier indicator Hereinafter referred to as carrier indication field (CIF).

Support that the carrier aggregation system of cross carrier wave scheduling may include with conventional down link control information (DCI) lattice The CIF of formula.In the system for supporting cross carrier wave scheduling, for example, in lte-a system, CIF is added to conventional DCI format (that is, the DCI format used in LTE), and therefore, digit can extend 3, and PDCCH structures may be reused Conventional encoding scheme, Resource Allocation Formula (namely based on the resource impact of CCE) etc..

Meanwhile various reference signals (RS) are sent in subframe.

In general, reference signal (RS) is sent as sequence.Any sequence may be used as sequence that RS sequences use and Do not limit specifically.RS sequences can be the sequence that the computer based on phase-shift keying (PSK) (PSK) generates.The example of PSK includes Binary phase shift keying (BPSK), quaternary PSK (QPSK) etc..Alternatively, RS sequences can be constant amplitude zero auto-correlation (CAZAC) sequence.The example of CAZAC sequences include based on the sequence of Zadoff-Chu (ZC), the ZC sequences with cyclic extensions, With truncated ZC sequences etc..Alternatively, RS sequences can be pseudorandom (PN) sequence.The example of PN sequences includes m sequences Row, the sequence of computer generation, Gold sequence, Kasami sequences etc..In addition, RS sequences can be the sequence cyclically shifted Row.

Downlink reference signal (RS) can be divided into the specific RS of cell (CRS), multimedia broadcasting and multicast single-frequency The specific RS of network (MBSFN) RS, UE (URS), positioning RS (PRS) and channel state information (CSI) RS (CSI-RS).CRS is It is sent to the RS of all UE in the cell.CRS can be in the channel measurement for CQI feedback and the channel estimation for PDSCH Middle use.MBSFN RS can be sent in distributing the subframe for MBSFN transmission.URS be by specific UE in the cell or The RS that the specific UE groups of person receive, and it is also referred to as demodulation RS (DM-RS).DM-RS is mainly in specific UE or spy It is used in the data demodulation of fixed UE groups.PRS can be used for the location estimation of UE.CSI-RS is in the PDSCH for LTE-A UE Channel estimation in use.CRI-RS is sparsely arranged in frequency domain or time-domain relatively.CSI-RS can be in normal-sub It punchinges in the data field of frame or MBSFN sub-frame.

Fig. 8 shows that CRS is mapped to the example of the pattern of RB when BS uses an antenna port.

With reference to figure 8, R0 indicates the RE that the CRS that the antenna port number 0 using BS is sent is mapped to.

CRS is sent in the cell for supporting PDSCH transmission in all downlink subframes.CRS can be in antenna end It is sent on mouth 0 to 3.CRS can be limited only for Δ f=15kHz.Based on cell ID (ID) generated from seed it is pseudo- with Machine sequence r_l,ns(m) it is exposed to the modulation symbol a of complex value^(p) _k,lResource impact.Here, n_sIt indicates in a radio frame Time-gap number, p indicate antenna port, andIndicate OFDM symbol number in a slot.K indicates sub-carrier indices.And k It is indicated by formula below.

[formula 5]

K=6m+ (v+v_shitf)mod6

In above formula, p indicates antenna port, and n_sIndicate time-gap number 0 or 1.

K has according to cell ID (N^Cell _ID) 6 displacement index.Therefore, there is the cell ID 0,6,12 for the multiple for being 6 Etc. cell send CRS in identical subframe position k.

In above formula,It is determined, and is used for according to antenna port pPossible values be 0,4,7,11.Cause This, CRS is sent on symbol 0,4,7 and 11.

Distributing to the resource element (RE) of the CRS of an antenna port cannot make in the transmission of another antenna port With, and must be arranged to zero.In addition, in Multicast Broadcast Single Frequency Network (MBSFN) subframe, CRS is only in the non-areas MBSFN It is sent in domain.

Fig. 9 a show measurement and measurement report procedure.

Mobile communication system needs to support the mobility of UE 100.Therefore, UE 100 constantly measures current offer service Serving cell quality and neighboring community quality.UE 100 in due course reports measurement result to network, and Best mobility is supplied to UE by network via switching etc..In order to which the measurement that such purpose executes is commonly referred to as radio resource It manages (RRM).

Meanwhile UE 100 is based on the downlink quality of CRS monitorings main plot (Pcell).This is referred to as radio link prison It surveys (RLM).For RLM, UE 100 estimates downlink quality, and by the threshold value (example of itself and the downlink quality of estimation Such as, Qout and Qin) it compares.Threshold value Qout is defined as being not able to reliably receive the level of downlink, and passes through consideration PCFICH errors, this corresponds to 10% error of PDCCH transmission.Threshold value Qin is defined as the downlink compared with Qout and significantly may be used The level leaned on, and by considering PCFICH errors, this corresponds to 2% error of PDCCH transmission.

As can see with reference to figure 9a, if each of serving cell 200a and neighboring community 200b are specific by cell Reference signal (CRS) is sent to UE 100, then UE 100 executes measurement via CRS, and the RRC including its measurement result is surveyed Amount report message is sent to serving cell 200a.

In this case, UE 100 can execute measurement by using three methods as described below.

1) Reference Signal Received Power (RSRP)：It indicates to carry the flat of all RE of the CRS sent via entire frequency band Receive power.In this case, the mean receiving power of all RE of CSI RS is carried rather than CRS can be measured.

2) received signal strength indicator symbol (RSSI)：It indicates the reception power measurement in entire frequency band.RSSI includes Signal, interference and thermal noise whole.

3) quality (RSRQ) that reference mark receives：It indicates CQI, and can be true according to Measurement bandwidth or sub-band It is set to different RSRP/RSSI.That is, RSRQ implies signal to interference and noise ratio (SINR).Due to RSRP can not provide it is enough Mobile message, so RSRQ, rather than RSRP, it can be used in switching and cell-reselection.

It may be calculated RSRQ=RSSI/RSSP.

Meanwhile UE 100 receives measurement configuration information element (IE) from the serving cell 200a for measurement.Including measuring The message for configuring IE is referred to as measuring configuration message.Here, measuring configuration IE can also reconfigure message via RRC connections It receives.When measurement result meets the reporting conditions in measurement configuration information, UE reports measurement result to BS.Including The message of measurement result is referred to as measurement report message.

Measuring configuration IE may include measuring target information.The measurement target information is to execute measurement to it about by UE The information of target.Measure target include as in frequency measure target frequency interior measurement target, as inter-frequency measurements target Inter-frequency measurements target and RAT between measure at least one of target (it is the target measured between RAT).For example, being surveyed in frequency Amount target can indicate that the neighboring community with frequency band identical with the frequency band of serving cell, inter-frequency measurements target can indicate Neighboring community with the frequency band different from serving cell frequency band, and measure target between RAT and can indicate to have and be different from clothes The neighboring community of the RAT of the RAT for cell of being engaged in.

Particularly, measuring configuration IE is included in IE shown in table below.

[table 1]

It includes the measObjectToRemoveList and table for indicating the measObject lists to be removed to measure target IE Show the measObjectToAddModList of list that newly increase or change.

According to the communication technology, measObject include MeasObjectCDMA2000, MeasObjectEUTRA, MeasObjectGERAN etc..

Meanwhile MeasObjectEUTRA IE include as E-UTRA cells measurement be suitable for frequency in or frequency between Information.MeasObjectEUTRA IE are indicated by table below.

[table 2]

MeasObjectEUTRA IE are more specifically indicated by table below.

[table 3]

As described above, MeasObjectEUTRA IE include neighboring community configuration information (that is, NeighCellConfig), and for measure RSRP and RSRQ for neighboring community time domain measurement resource-constrained model (that is, ) and the cell list (that is, measSubframeCellList) that is suitable for of the pattern measSubframePatternNeigh.

Meanwhile UE 100 also receives radio resource configuration IE as shown.

The dedicated IE of radio resource configuration discharges radio bearer for configuring/change/, or matches for changing MAC It sets.The dedicated IE of radio resource configuration includes sub-frame mode information.The sub-frame mode information is small as master for measuring About the information for measuring resource-constrained model in the time-domain of the RSRP and RSRQ in area (PCell).

Radio resource configuration IE is included in field shown in table below.

[table 4]

RadioResourceConfigDedicated fields include parameter below.

[table 5]

As described above, RadioResourceConfigDedicated fields include measSubframePatternPCell Or measSubframePattern-Serv, indicate for execute as main plot (PCell, that is, first community) (or Serving cell) measure (RSRP, RSRQ) time domain measurement resource-constrained model.

Fig. 9 b show channel status information reports process.

Channel state information (CSI) is intended to indicate that the indicator of downlink channel status, and may include channel Quality indicator (CQI) and precoding matrix indicators (PMI) for CSI-RS at least any one.Furthermore, it is possible to wrap Include precoding type indicator (PTI), order instruction (RI) etc..

CQI provides the information in relation to link circuit self-adapting parameter, and given time can be supported by UE.CQI can lead to Cross the feature for considering UE receivers, signal can be supported interference plus noise ratio (SINR) etc. expression by downlink channel Data rate.BS can will be suitable for modulation (QPSK, 16-QAM, 64-QAM etc. of downlink channel by using CQI determinations Deng) and code rate.CQI can be generated by using various methods.For example, there is the side of directly quantization and fed-back channel status Method, calculates and the method for feedback SINR, report are practically suitable for channel status, such as method of Modulation and Coding Scheme (MCS). If CQI is generated based on MCS, MCS includes based on modulation scheme, encoding scheme and code rate etc. on it.

PMI provides the information for pre-coding matrix in the precoding based on code book.PMI and multiple-input and multiple-output (MIMO) it combines.When PMI is fed back in MIMO, it is referred to as closed-loop MIMO.

RI is the information of the number of plies for being recommended by UE.That is, RI indicates the stream used in spatial multiplexing Number.Only when the MIMO mode work multiplexed with UE use spaces, RI is fed back.RI is also anti-with one or more CQI Feedback combines.That is, using specific RI values when calculating the CQI to be fed back.The order of channel compared with CQI usually slowly Variation, and therefore, RI is fed back with number more less than CQI.RI transmission cycles can be times of CQI/PMI transmission cycles Number.RI is presented full system frequency band, and the RI of frequency selectivity is not supported to feed back.

UE 100 can periodically or aperiodically send CSI to serving cell.

Meanwhile serving cell can will be sent to UE 100 about the configuration information of CSI.The configuration information may include csi-subframePatternConfig.Csi-subframePatternConfig may include csi- MeasSubframeSet1 (either csiSet1Pattern) or csi-MeasSubframeSet2 (csiSet2Pattern). Csi-MeasSubframeSet1 (or csiSet1Pattern) indicates to correspond to the almost blank subframe to be described below (ABS) subset of subframe, and csi-MeasSubframeSet2 (csiSet2Pattern) indicates the son of non-ABS subframes Collection.This refers to if csi-subframePatternConfig is released, using in relation to ABS subframes measurement result and The average value of measurement result in relation to non-ABS subframes.

Figure 10 shows the example of interference problem between cells.

As that can be seen with reference chart 10, if UE 100 is located at the covering model of first community 200a and second community 200b The overlay region enclosed, then the signal of first community 200a play the role of the signal interference to second community 200b, and on the contrary, The signal of second community 200b plays the role of the signal interference to first community 200a.

In most of basic skills for solving such interference problem, different frequencies is used between cells. But since frequency is rare and costliness resource, it is very by supplier to solve the problems, such as this method not by using frequency division It welcomes.

Therefore, 3GPP is intended to solve such problem of inter-cell interference via the time-division.

Therefore, recently, one as disturbance coordination method in 3 gpp energetically studies the inter-cell interference association of enhancing It adjusts (eICIC).

The time-division method introduced in LTE versions 10 is referred to as in the sense that it more enhances than conventional frequency division method The Inter-Cell Interference Coordination (ICIC) of enhancing.In this approach, the cell of interference is referred to as assailant's cell or main plot, Disturbed cell definitions are that either secondary cell assailant's cell or main plot stop victim's cell in specific subframe Data transmission, and UE is allowed to keep connecting with victim's cell or secondary cell in corresponding subframe.That is, In this method, if different types of cell exists jointly, since UE undergoes significantly high interference, institute in some area With a cell, temporarily stop signal is transmitted so that interference signal is hardly sent.

Meanwhile the specific sub-frame of data transmission stopping wherein being referred to as almost blank subframe (ABS).Except required control Other than information, the not transmission data in the subframe corresponding to ABS.For example, required control information is CRS.Therefore, suitable in ABS For subframe in not transmission data, and CRS signals are only sent in symbol 0,4,7 and 11.

Figure 11 a show the example of the Inter-Cell Interference Coordination (eICIC) of the enhancing for solving to interfere between BS.

With reference to figure 11a, first community 200a executes data transmission in the data field of subframe as shown.

In this case, second community 200b applies eICIC and goes to solve to interfere.That is, if applying eICIC, Then corresponding subframe is operated according to ABS, and therefore, cannot transmission data in the data field.

But in the subframe operated according to ABS, CRS can only be sent on symbol 0,4,7 and 11.

Figure 11 b show to exchange the example with the relevant information of ABS subframes.

As that can be seen with reference chart 11b, the relevant information of ABS can via X2 interface in the first e node B 200a and It is exchanged between 2nd e node B 200b.

In addition, the relevant information of ABS can be sent to by each of the first e node B 200a and the 2nd e node B 200b It services UE 100a/100b.

Each of first e node B 200a and the 2nd e node B 200b can relevant letters of its ABS based on one or more Breath and the ABS relation informations of counterpart are configured to it and service the measurement Subset of UE100a/100b, and hereafter can be by it It sends.

Corresponding cell 200a/200b does not send down link signal in the downlink subframe for be arranged to ABS, or Person sends down link signal with the power reduced.Therefore, compared with the downlink subframe for being not provided as ABS, another The influential interference level of tool can reduce in the coverage area of a cell.Due to depending on whether that subframe is arranged to ABS, do The level of disturbing can change, so UE 100 only has to execute measurement in predetermined specific subframe.

For this purpose, the abs mode information of its abs mode information and counterpart based on one or more, cell 200a/200b Each of can order its service UE 100a/100b only execute measurement in specific subframe.This is referred to as the survey of limitation Amount.The order can be sent via highest level signal.Highest level signal can be RRC signals.The signal can be CQI- ReportConfig elements.

The relevant information of ABS may include ABS information and ABS states.

First, ABS information may include such as one or more information elements shown in table below.Abs mode Information is the information for indicating to be used as in bitmap format the subframe of ABS.In the case of FDD, it can be configured with 40 bitmaps, And in the tdd case, up to 70.For example, in fdd, 40 expressions, 40 subframes, and if place value is 1, table Show ABS, and if place value is 0, then it represents that non-ABS subframes.Measurement Subset is the subset of abs mode information, and FDD's By the bitmap configuration with 40 under situation, and 70 are up in the case of TDD.Such measurement Subset is by the measurement of limitation It is allocated to corresponding UE.

[table 6]

Next, ABS states are for allowing corresponding cell to determine whether to change abs mode.Workable abs mode letter Breath is the subset of abs mode information, and is also made of bitmap.Workable abs mode information indicates whether to be appointed as ABS's Subframe is suitably used for the purpose of interference mitigation.Downlink ABS states are in the son indicated with workable abs mode information The ratio of the number for the downlink resource blocks (RB) dispatched in frame and the RB for distributing to the UE that must use ABS protections, and Indicate how ABS is efficiently used according to original purpose in victim's cell.

[table 7]

The measurement Subset being made of the subset of abs mode information is used as the subframe of ABS.Other subframes can be automatically Determine whether that corresponding cell is used according to business load as ABS.

As described above, except through using eICIC methods to solve except problem of inter-cell interference, it is also possible to exist for UE 100 increase the method for Interference Cancellation function.Hereinafter, description is increased to the method for Interference Cancellation function.

Figure 12 is the block diagram of the structure for the demonstration for showing UE.

In long term evolution (LTE) or advanced LTE (LTE-A), Orthodoxy Frequency Division Multiplex is used in the downlink (OFDM), and in the uplink using single carrier (SC)-FDMA similar to OFDM.

SC-FDMA is also referred to as DFT extension OFDM (DFT-s OFDM).When using SC-FDMA transmission scheme, power The amplifier nonlinearity distortion duration is evitable, and therefore, transmission power efficiency can be in the UE of power consumption limit Middle raising.Therefore, user information throughput can improve.

SC-FDMA is very similar to OFDM in some sense, that is, signal is by using Fast Fourier Transform (FFT) (FFT) It is sent on sub-carriers in a manner of division with inverse FFT (IFFT).But conventional OFDM has corresponding on the frequency axis Subcarrier on the signal that carries the problem of time axis signal is converted to by using IFFT.That is, since IFFT has The form of identical operation is executed parallel, and peak-to-average power ratio (PAPR) improves.In order to avoid being improved in terms of PAPR, Different from OFDM, SC-FDMA executes IFFT after DFT extensions.That is, executing the transmission of IFFT after DFT extensions Method is referred to as SC-FDMA.Therefore, SC-FDMA is also referred to as DFT extension OFDM (DFT-s-OFDM) in the sense that identical.

Advantageously, SC-FDMA has the structure similar to OFDM, and is steady accordingly, with respect to multi-path channel, and And the conventional OFDM by solving the disadvantage that PAPR raisings at all via IFFT operations, also power amplifier is allowed effectively to make With.

With reference to figure 12, UE 100 includes RF units 110.RF units 110 include sending side 111 and receiving side 112.Sending side 111 include that discrete Fourier transform (DFT) unit 1111, subcarrier mapper 1112, IFFT units 1113 and CP are inserted into unit 1114 and radio transmission elements 1115.RF units 110 may further include scrambling unit (not shown), modulation mapper (not shown), layer mapper (not shown) and the layer converter (not shown) in 1111 front of DFT units.That is, in order to It avoids improving in terms of PAPR as described above, the sending side of RF units 110 allows information first before mapping signal is subcarrier First by DFT1111 processing.The signal of extension (or being used as the precoding of identical meanings) is undergone via son by DFT units 1111 Carrier mapper 1112 is mapped as subcarrier, and hereafter, and time axis signal is generated as via IFFT units 1113.

That is, after the grade of IFFT units 113, according to DFT units 1111, subcarrier mapper 1112 and IFFT The correlation of unit 1113, the peak-to-average power ratio (PARP) of time-domain signal does not significantly increase in SC-FDMA, And therefore, it is beneficial for transmission power efficiency.That is, in SC-FDMA, PAPR or cubic measure (CM) it can be lowered.

DFT units 1111 execute DFT to export the symbol of complex value to incoming symbol.For example, if Ntx symbol of input, Then DFT sizes are Ntx (Ntx is natural number here).Hereinafter, DFT units 1111 also referred to as convert precoder.Subcarrier The symbol of complex value is mapped to corresponding subcarrier by mapper 1112 in frequency domain.The symbol of complex value, which may map to, to be corresponded to Distribute to the resource element of the resource block of data transmission.Hereinafter, subcarrier mapper 1112 can also be known as resource element Mapper.IFFT units 1113 execute IFFT to export as time-domain signal for the baseband signal of data to incoming symbol.CP It is inserted into the aft section for the baseband signal that unit 1114 is replicated for data, and is inserted before the baseband signal for data Enter the duplicate.Intersymbol interference (ISI) and inter-carrier interference (ICI) are avoided by CP insertions, and therefore, or even in multipath Orthogonality can be kept in channel.

Meanwhile the standardization of the advanced LTE come from LTE development is energetically realized in 3 gpp, and used fair Perhaps the sub-clustering DFT-s-OFDM of discontinuous resource allocation.

Sub-clustering DFS-s OFDM transmission methods changes from conventional SC-FDMA transmission method, and are to undergo to prelist The data symbol of code device is divided into multiple sub-blocks, then by mutually decomposing them in frequency domain, executes mapping on it Method.The important feature of sub-clustering DFT-s-OFDM methods is to allow the resource allocation of frequency selectivity, to be setup flexibly Frequency selective fading environments.

In this case, in the sub-clustering DFT-s-OFDM methods of the uplink access method selection as advanced LTE In, with conventional uplink access method, that is, SC-FDMA is different, allows discontinuous resource allocation.Therefore, it to be sent Uplink data can be divided into several sub-clustering units.

That is, it is assumed that LTE system keeps single carrier wave feature in the case of uplink, and lte-a system permits Perhaps the feelings that the data of experience DFT precodings are discontinuously distributed in frequency axis or PUSCH and PUCCH are simultaneously sent Shape.

On the other hand, the receiving side 112 of RF units 110 include radio reception unit 1121, CP removal units 1122, FFT unit 1123, interference cancellation unit 1124 etc..The radio reception unit 1121 of receiving side, 1122 and of CP removal units FFT unit 1123 executes radio transmission unit 1115, CP in sending side 111 and is inserted into unit 1114 and IFFT units 1113 Opposite function.

The interference for being included in and receiving in signal is eliminated or mitigated to interference cancellation unit 1124.

Receiving side 112 with interference cancellation unit 1124 is referred to as Interference Cancellation (IC) receiver or AF panel closes It grows up to be a useful person (IRC) receiver, and can conceptually pass through to delete and be realized from the interference signal for receiving signal.

In this case, the complexity of the receiving unit with interference cancellation unit 1124 depends on being used as Interference Cancellation The type of the maximum number of the cell of target and the signal to be removed.

The main target signal of Interference Cancellation can be the specific reference signal of cell (CRS).

The inter-cell interference also referred to as further enhanced via the counteracting of the interference of interference cancellation unit 1124 as described above Coordinate (FeICIC).

Figure 13 a show include different types of network of macrocellular and cellulor example.Figure 13 b are shown Figure 13 a's The example that CRS conflicts under environment.Figure 13 c show the process of the CRS Interference Cancellations of network support UE.

In the next generation communication standard including 3GPP LTE-A, the cellulor with low transmission power is (for example, pico- Cell, Femto cell or Microcell) different types of network for being coexisted with conventional macrocellular 200 is just under discussion.

In such different types of network, since macrocellular and cellulor are overlapped, problem of inter-cell interference becomes more Add serious.

More specifically, small there are first around the macrocellular 200 of the serving cell corresponding to UE 100 with reference to figure 13a Honeycomb 300a and the second cellulor 300b.If UE 100, which is being moved to the first cellulor 300a, UE 100, to be passed through CRS is received from the macrocellular 200 corresponding to serving cell and measures RSRP, and also must be by being received from the first cellulor 300a CRS measures RSRP.

But CRS pairs of the first cellulor of the CRS and the second cellulor 300b corresponding to the macrocellular 200 of serving cell The CRS of 300a is interfered.Therefore, the first assailant's cell can be considered as corresponding to the macrocellular of serving cell 200, second Cellulor 300b can be considered as the second assailant's cell, and the first cellulor 300a can be considered as victim's cell.

For example, it is assumed that the cell ID corresponding to the macrocellular 200 of serving cell is 0, the cell ID of the first cellulor 300a It is 6, and the cell ID of the second cellulor 300b is 1.

Then, since cell ID 0 and 6 is 6 multiple, if reference formula 5 is illustrated above, so small corresponding to servicing The macrocellular 200 in area and the first cellulor 300a send CRS on identical sub-carrier positions k, so as to cause the conflict of CRS. More specifically, as that can be seen with reference chart 13b, the first subframe and the second subframe are used as non-by the first cellulor 300a ABS subframes, rather than ABS subframes operate.But or even the first and second subframes pass through the macrocellular corresponding to serving cell 200 operate as ABS subframes, corresponding to the macrocellular 200 of serving cell and the first cellulor 300a on symbol 0,4,7 and 11 CRS is sent on identical sub-carrier positions k, so as to cause conflict.

On the other hand, the cell ID of the second cellulor 300b is 1, is not 6 multiple.Therefore, the second cellulor 300b CRS do not conflict with any CRS of any cell (that is, serving cell and first cellulor), and the CRS of the second cellulor 300b Lead to the data field interference to the subframe corresponding to serving cell and the macrocellular 200 of the first cellulor 300a.

Finally, in order to make UE 100 that CRS be correctly received, it is necessary to execute Interference Cancellation function.But in order to drive CRS Interference Cancellation function needs the information for knowing the CRS about the assailant's cell caused interference with.If it is not known that about attacker The information of the CRS of cell then goes to execute Interference Cancellation, may be invalid since UE 100 has to carry out extremely complex process 's.Therefore, CRS help informations can be sent to UE100 corresponding to the macrocellular of serving cell 200.This will be retouched with reference to figure 13c It states.

With reference to figure 13c, UE 100 is asked to go to examine according to high-rise command selection corresponding to the macrocellular of serving cell Look into UE abilities.

Then, UE 100 provides UE ability informations according to the request.That is, in response to UE efficiency tests, UE 100 The presence of eICIC abilities and CRS Interference Cancellations (IC) ability is reported to the macrocellular 200 corresponding to serving cell.Another party Face, if the Radio Access Capability of UE 100 is changed, the high level of UE 100 can be held with the high level of command service cell 200 Row efficiency test is asked.

In addition, serving cell 200 is true via the information exchanged between the first cellulor 300a and the second cellulor 300b Recognize whether it is the assailant's cell caused interference with.

Then, serving cell 200 matches the measuring configuration IE being shown in table 1 and the radio resource being shown in table 4 It sets IE and is sent to UE 100.In this case, if UE 100 has CRS IC abilities, in addition to what is be shown in table 5 Except RadioResourceConfigDedicated fields, serving cell 200 can further send CRS help informations (that is, CRS Assistance Info).CRS help informations include the list for assailant's cell, that is to say, that for send with The CRS information of the cell ID and assailant's cell of the cell of the CRS of CRS conflicts for executing the cell measured.

Then, UE 100 confirms the information received.That is, in the radio resource configuration IE of reception In the subframe specified in measSubframePatternPCell, once it is received from the macrocellular 200 corresponding to serving cell CRS, UE 100 is measured by eliminating by the interference caused by the CRS from the first cellulor 300a and the second cellulor 300b RSRP.In addition, in the subframe specified in the measSubframePatternNeigh of the radio resource configuration IE of reception, one Denier receives CRS from each of the first cellulor 300a and the second cellulor 300b, and UE 100 is corresponded to by eliminating by coming from Interference caused by the CRS of the macrocellular 200 of serving cell measures RSRP.

But according to whether the subframe for measuring RSRP is ABS subframes or non-ABS subframes, there are RSRP to measure knot Fruit may different problems.

Further, since whether executing Interference Cancellation (IC) in the subframe specified in measSubframePatternPCell It is unclear, it may occur that problem.Similarly, due to whether in measSubframePatternNeigh specify It is unclear that IC is executed in subframe, it may occur that problem.

Therefore, in order to solve the problems, the present inventor observes and measures ability via the first test (simulation), and And it tries to find its solution.

<First test (simulation) and the solution based on the result>

The present inventor has executed the first test (simulation) and has gone to observe and measure ability.

The first test (simulation) is executed under condition below.

In the subframe specified in measSubframePatternPCell and measSubframePatternNeigh, It executes for executing the test of Interference Cancellation (IC) to CRS and not executing both tests of IC.

Test is only existed by being based on above-mentioned csi-MeasSubframeSet1 (csiSet1Pattern) Execute what CRS IC were realized in ABS subframes, and it is by being based on csi-MeasSubframeSet2 to test (csiSet2Pattern) IC realizations are not executed to CRS in non-ABS subframes.

- CRS IC are only for the mitigation execution by the interference caused by assailant's cell.

It is executed in the subframe that-RLM is only specified in measSubframePatternPCell.

It is indicated by table below under the condition that the result of first test (simulation) is previously mentioned.

In table 8 below, A1 indicates that the first assailant's cell, A2 indicate that the second assailant's cell, V indicate that victim is small Area, and S indicates serving cell.In addition, correctly estimation (re) implies and preferably executes measurement, over-evaluate (oe) imply cause it is excessive Measurement, and underestimate (ue) and imply and lead to insufficient measurement.In addition, PcellMeasP indicates that instruction executes survey to serving cell The measSubframePatternPCell of the subframe of amount, and NcellMeasP indicates that instruction executes measurement to neighboring community The measSubframePatternNeigh of subframe.CsiSet1 indicates csi-MeasSubframeSet1 (csiSet1Pattern), and csiSet2 indicates csi-MeasSubframeSet2 (csiSet2Pattern).

In addition, in table 8 below, abs mode is 1100, indicates that the first and second subframes play ABS subframes, And the third and fourth subframe plays non-ABS subframes.In addition, scheduler pattern (that is, SchedulerPattern) is 0011, indicate that data are not sent in the first and second subframes, and due to executing scheduling, data due to not executing scheduling It is sent in the third and fourth subframe.

In addition, in table 8 below, " IC " indicates to execute CRS IC, and " noIC " expression does not execute CRS IC.

[table 8]

As that can see from above table 8, in test 1, PcellMeasP (that is, MeasSubframePatternPCell it is) 1100, that is to say, that survey is executed to the first and second subframes as serving cell Amount, and measurement is not executed to the third and fourth subframe.In addition, in test 1, NcellMeasP (that is, MeasSubframePatternNeigh be) 1100, that is to say, that not to as neighboring community (for example, the first cellulor and Two cellulors) the first and second subframes execute measurement, and measurement is not executed to the third and fourth subframe.Therefore, with whether Execution IC is unrelated, is used for the RSRP of the first assailant's cell (that is, serving cell)_A1It is preferably measured, and therefore, in table 8 In its be written as " re ".In addition, with whether to execute IC unrelated, it to be used for the second assailant's cell (that is, second cellulor 300b) RSRP_A2It is preferably measured, and therefore, it is written as " re " in table 8.In addition, when executing IC, for by The RSRP of evil person's cell (that is, first cellulor 300a)_VIt is preferably measured, and therefore, in table 8, it is written as " re ", And when not executing IC, it is overestimated, and therefore, is written as " oe ".Meanwhile with whether to execute IC unrelated, use In the RLM of serving cell_S(that is, SNR) is overestimated, and therefore, is written as " oe ".In addition, channel state information (CSI) Non- ABS subframes are preferably measured according to csiSet2a, and therefore, are written as " re ", and are worked as according to release to ABS When the CSI measurement results of the CSI measurement results of frame and non-ABS subframes carry out average, it is overestimated, and therefore, quilt It is written as " oe ".

Next, as that can see from above table 8, in test 2, PcellMeasP (that is, MeasSubframePatternPCell it is) 1100, that is to say, that survey is executed to the first and second subframes as serving cell Amount, and measurement is not executed to the third and fourth subframe.In addition, in test 2, NcellMeasP (that is, MeasSubframePatternNeigh be) 0011, that is to say, that not to as neighboring community (for example, the first cellulor and Two cellulors) the first and second subframes execute measurement, and measurement is executed to the third and fourth subframe.Test 2 result with The result of test 1 is identical.

Next, as that can see from above table 8, in test 3, PcellMeasP (that is, MeasSubframePatternPCell it is) 0011, that is to say, that not to the first and second subframes execution as serving cell It measures, and measurement is executed to the third and fourth subframe.In addition, in test 3, NcellMeasP (that is, MeasSubframePatternNeigh be) 1100, that is to say, that as neighboring community (for example, the first cellulor and second Cellulor) the first and second subframes execute measurement, and measurement is not executed to the third and fourth subframe.Test 3 result with The result of test 1 and the result of test 2 are approximately the same.But when executing IC, it to be used for the RLM of serving cell_S(that is, SNR it) is overestimated, and therefore, is written as " oe ", and when not executing IC, preferably measured, and because This, is written as " re ".

Finally, as that can see from above table 8, in test 4, PcellMeasP (that is, MeasSubframePatternPCell it is) 0011, that is to say, that not to the first and second subframes execution as serving cell It measures, and measurement is executed to the third and fourth subframe.In addition, in test 4, NcellMeasP (that is, MeasSubframePatternNeigh be) 0011, that is to say, that not to as neighboring community (that is, the first cellulor and second Cellulor) the first and second subframes execute measurement, and measurement is executed to the third and fourth subframe.The result of test 4 and survey The result of examination 3 is identical.

Executing the result of four the first tests can be summarized as follows.

It is i) unrelated with serving cell measurement pattern (that is, PcellMeasP or measSubframePatternPcell), Or with whether execute that IC is unrelated, the RSRP for serving cell 200 is preferably measured.

It is ii) unrelated with neighbor cell measurement pattern (that is, NcellMeasP or measSubframePatternNeigh), And with whether execute that IC is unrelated, the RSRP for the second assailant's cell (for example, second cellulor 300b) is preferably surveyed Amount.

Iii) unrelated with measurement pattern (that is, NcellMeasP or measSubframePatternNeigh), work as execution When IC, the RSRP for victim's cell (for example, first cellulor 300) is preferably measured.

Iv) with whether execute that IC is unrelated, be used for the RLM of serving cell 200, that is to say, that SNR is with identical as abs mode Measurement pattern (that is, PcellMeasP or measSubframePatternPcell) be overestimated, due to related ABS subframes Noise is measured as less than the related non-actual noise of ABS subframes.

V) in addition, that is, SNR for different from abs mode serving cell measurement pattern (that is, PcellMeasP or MeasSubframePatternPcell it) is overestimated, due to measuring the noise less than actual noise when executing IC, RLM for serving cell 200.

Vi) when not executing IC, it is used for the RLM of serving cell 200, that is to say, that SNR can be for being different from The serving cell measurement pattern (PcellMeasP or measSubframePatternPcell) of abs mode is preferably surveyed Amount, due to preferably considering actual noise in non-ABS subframes.

Vii) be used for serving cell 200 CSI for different from abs mode serving cell measurement pattern (that is, Csiset2 or csi-MeasSubframeSet2) preferably measured.

Viii) the CSI measurement results of ABS subframes and the CSI of non-ABS subframes are measured and tied when according to the release of csiSet2 When fruit carries out average, the CSI for serving cell 200 is overestimated, due to measuring lower noise in ABS subframes.

From the first test result outlined above, if serving cell is the first assailant's cell as depicted in fig. 13 a, And if the CRS of the first assailant's cell conflicts with the CRS of victim's cell, and the CRS of victim's cell is not attacked with second The CSR of the person's of hitting cell conflicts, then it can be seen that RSRP, RLM and CSI are in the serving cell measurement pattern different from abs mode It is preferably measured on (that is, PcellMeasP or measSubframePatternPcell).

Therefore, the first of the application the open environment about the environment similar to Figure 13 a is (if serving cell is first to attack The person's of hitting cell, and the CRS of the first assailant's cell conflicts with the CRS of victim's cell, and the CRS of victim's cell is not with The CRS of two assailant's cells conflicts) it is as follows.

It is recommended that 1：Serving cell measurement pattern (that is, PcellMeasP or measSubframePatternPcell) is necessary It is the subset of non-abs mode.That is, must be selected from non-ABS subframes for executing the subframe measured to serving cell It selects out.

It is recommended that 2：Neighbor cell measurement pattern (that is, NcellMeasP or measSubframePatternNeigh) is necessary It is the subset of abs mode.That is, must be selected from ABS subframes for executing the subframe measured to neighboring community Come.

It is recommended that 3：The measurement pattern of RLM must be the subset of csi-MeasSubframeSet2 or csiSet2.Namely It says, the subframe for executing RLM must be chosen from for executing in the non-ABS subframes that CSI is measured.

Figure 14 shows the example changed in the environment of Figure 13 a.

With reference to figure 14, around the first cellulor 300a of the serving cell corresponding to UE 100, there are macrocellular 200 and the Two cellulor 300b.But if UE 100 is located at coverage area and macro bee in the first cellulor corresponding to serving cell Overlay region between the coverage area of nest 200, then the CRS of the CRS of macrocellular 200 and the second cellulor 300b are to corresponding to service First cellulor 300a of cell is interfered.Therefore, corresponding to the first cellulor 300a of serving cell can be considered as by Evil person's cell, macrocellular 200 can be considered as the first assailant's cell, and the second cellulor 300b can be considered as second and attack The person's of hitting cell.

For example, it is assumed that the cell ID corresponding to the macrocellular 200 of the first assailant's cell is 0, the first cellulor 300a's Cell ID is 6, and the cell ID of the second cellulor 300b is 1.

Then, since cell ID 0 and 6 is 6 multiple, then such as reference formula 5 is illustrated above, corresponds to the first attack It the macrocellular 200 of person's cell and is sent on identical sub-carrier positions k corresponding to the first cellulor 300a of serving cell CRS, so as to cause the conflict of CRS.

Therefore, UE 100 must execute Interference Cancellation (IC) to CRS.For this purpose, corresponding to the first cellulor of serving cell CRS help informations can be sent to UE 100 by 300a.CRS help informations include the list for assailant's cell, that is, It says, for sending and the CRS of the cell ID and assailant's cell of the cell for executing the CRS that the CRS of the cell measured conflicts Information.

But problem mentioned above in the environment of Figure 14 it can also happen that.

Therefore, in order to solve the problems, the present inventor observes and measures ability via the second test (simulation), and And it tries to find its solution.

<Second test (simulation) and the solution based on the result>

The second test (simulation) is executed under the identical condition of the first test as described above.

The result of second test (simulation) is shown in table below.

In addition, in table 9 below, different from table 8, scheduler pattern (that is, SchedulerPattern) is 1100.That is, scheduling is executed to the first and second subframes, and therefore, transmission data, without to the third and fourth subframe Scheduling is executed, and therefore, not transmission data.

In addition, in table 9 below, " IC " indicates to execute CRS IC, and

" noIC " expression does not execute CRS IC.

[table 9]

As that can see from above table 9, in test 1, indicate for executing the subframe measured to serving cell PcellMeasP (that is, measSubframePatternPCell) be 1100, and indicate for executing survey to neighboring community The NcellMeasP (that is, measSubframePatternNeigh) of the subframe of amount is 1100.Therefore, with whether execute IC without It closes, is used for the RSRP of the first assailant's cell (for example, macrocellular 200)_A1, and for the second assailant's cell (that is, the second chalcid fly Nest 300b) RSRP_A2It is preferably measured, and therefore, it is written as " re " in table 9.But when executing IC It waits, is used for the RSRP of victim's cell (that is, serving cell 300a)_VIt is preferably measured, and therefore, in table 9, it is written For " re ", and when not executing IC, it is overestimated, and therefore, is written as " oe ".Meanwhile when executing IC It waits, is used for the RLM of serving cell (that is, SRN)_SIt is preferably measured, and therefore, is written as " re ", and ought not be executed It when IC, is overestimated, and therefore, is written as " oe ".In addition, channel state information (CSI) is according to csiSet1 quilts ABS subframes are preferably measured, and therefore, be written as " re ", and tied when being measured the CSI of ABS subframes according to version When the CSI measurement results of fruit and non-ABS subframes carry out average, is underestimated, and therefore, be written as " ue ".

Next, in test 2, as that can see from above table 9, indicate for executing measurement to serving cell The PcellMeasP (that is, measSubframePatternPCell) of subframe be 0011, and indicate for neighboring community The NcellMeasP (that is, measSubframePatternNeigh) for executing the subframe measured is 0011.The result of test 2 and survey The result of examination 1 is identical.

Next, in test 3, as that can see from above table 9, indicate for executing measurement to serving cell The PcellMeasP (that is, measSubframePatternPCell) of subframe be 0011, and indicate for neighboring community The NcellMeasP (that is, measSubframePatternNeigh) for executing the subframe measured is 1100.The result of test 3 and survey The result of examination 1 and the result of test 2 are approximately the same.But with whether execute that IC is unrelated, be used for the RLM of serving cell_S(that is, SNR) underestimated, and therefore, be written as " ue ".

Finally, it in test 4, as that can see from above table 9, indicates for executing measurement to serving cell The PcellMeasP (that is, measSubframePatternPCell) of subframe is 0011, and is indicated for being held to neighboring community The NcellMeasP (that is, measSubframePatternNeigh) for the subframe that row measures is 1100.The result of test 4 and test 3 result is identical.

Executing the result of four the second tests can be summarized as follows.

I) when executing IC, with serving cell measurement pattern (PcellMeasP or MeasSubframePatternPcell) unrelated, it is used for the RSRP of serving cell 300a_vPreferably measured.

It is ii) unrelated with neighbor cell measurement pattern (that is, NcellMeasP or measSubframePatternNeigh), And with whether execute that IC is unrelated, be used for the RSRP of the first assailant's cell (for example, macrocellular 200)_A1Preferably measured.

Iii) with neighbor cell measurement pattern (that is, NcellMeasP or measSubframePatternNeigh) nothing Close, and with whether execute that IC is unrelated, be used for the RSRP of the second assailant's cell (for example, second cellulor 300b)_A2It is preferable Ground measures.

Iv) when executing IC, it is used for the RLM of serving cell 300a, that is, SNR pairs of measurement mould identical with abs mode Formula (that is, PcellMeasP or measSubframePatternPcell) is preferably measured.

V) when not executing IC, the RLM of serving cell 300a, i.e., SNR pairs measurement mould identical with abs mode are used for Formula (that is, PcellMeasP or measSubframePatternPcell) is underestimated, due to measuring than actual noise more High noise.

Vi) with whether execute that IC is unrelated, be used for the RLM of serving cell 300a, that is, SNR can be to different from abs mode Measurement pattern (that is, PcellMeasP or measSubframePatternPcell) is underestimated, due to measuring ABS subframes Noise more higher than actual noise.

Vii) be used for serving cell 300a CSI for measurement pattern identical with abs mode (that is, csiset1 or Csi-MeasSubframeSet1 it) is preferably measured.

Viii) the CSI measurement results of ABS subframes and the CSI of non-ABS subframes are measured and tied when according to the release of csiSet1 When fruit carries out average, the CSI for serving cell 300a is underestimated, due to measuring higher make an uproar in non-ABS subframes Sound.

From the second test result outlined above, if serving cell is victim's cell as shown in figure 14, and Conflict with the CRS of the first assailant's cell corresponding to the CRS of the serving cell of victim's cell, but corresponds to victim's cell The CRS of serving cell do not conflict with the CSR of the second assailant's cell, then it can be seen that RSRP, RLM and CSI are different from ABS It is preferably surveyed in the serving cell measurement pattern (that is, PcellMeasP or measSubframePatternPcell) of pattern Amount.

Therefore, the second open environment about the environment similar to Figure 14 of the application is (if serving cell is victim Cell, and the CRS of victim's cell conflicts with the CRS of the first assailant's cell, and the CRS of victim's cell is not attacked with second The CRS of the person's of hitting cell conflicts) it is as follows.

It is recommended that 4：Serving cell measurement pattern (that is, PcellMeasP or measSubframePatternPcell) is necessary It is the subset of abs mode.That is, must be selected from ABS subframes for executing the subframe measured to serving cell Come.

It is recommended that 5：Neighbor cell measurement pattern (that is, NcellMeasP or measSubframePatternNeigh) is necessary It is the subset of non-abs mode.That is, must be selected from non-ABS subframes for executing the subframe measured to neighboring community It selects out.

It is recommended that 6：The measurement pattern of RLM must be the subset of csi-MeasSubframeSet1 or csiSet1.Namely It says, the subframe for executing RLM must be chosen from for executing in the ABS subframes that CSI is measured.

It is in this application it is further proposed that following other than above-mentioned suggestion 1 to 6.

It is recommended that 7：If serving cell is the first assailant's cell, and if the CSI of the first assailant's cell with it is aggrieved The CRS of person's cell conflicts, and still, the CRS of victim's cell does not conflict with the CRS of the second assailant's cell, then non-ABS subframes mould The subset of formula must be removed from neighbor cell measurement pattern.

It is recommended that 8：If serving cell is victim's cell, and the CRS of victim's cell and the first assailant's cell CRS conflicts, but the CRS of victim's cell does not conflict with the CSR of the second assailant's cell, then the subset of ABS sub-frame modes must It must be removed from neighbor cell measurement pattern.

It is recommended that 9：If serving cell is the first assailant's cell, and if the CSI of the first assailant's cell with it is aggrieved The CRS of person's cell conflicts, and still, the CRS of victim's cell does not conflict with the CRS of the second assailant's cell, then non-ABS subframes mould The subset of formula must be adapted for serving cell measurement pattern and neighbor cell measurement pattern.

It is recommended that 10：If serving cell is victim's cell, and if the CSI of victim's cell and the first attacker are small The CRS in area conflicts, but the CRS of victim's cell does not conflict with the CRS of the second assailant's cell, then the son of ABS sub-frame modes Collection must be adapted for serving cell measurement pattern and neighbor cell measurement pattern.

It is recommended that 11：If serving cell is the first assailant's cell, and if the CRS of the first assailant's cell with it is aggrieved The CRS of person's cell conflicts, but the CRS of victim's cell does not conflict with the CRS of the second assailant's cell, then RLM measurement patterns It must be arranged to csi-MeasSubframeSet1 or csiSet1.

It is recommended that 12：If serving cell is victim's cell, and if the CRS of victim's cell and the first attacker are small The CRS in area conflicts, but the CRS of victim's cell does not conflict with the CRS of the second assailant's cell, then RLM measurement patterns are necessary It is arranged to csi-SubframePatternConfig.

Above-mentioned the embodiment of the present invention can be implemented via various means.For example, the implementation of the present invention Example can be implemented with hardware, firmware, software or combination thereof etc..Its details will refer to the figure and describe.

Figure 15 is the block diagram for showing wireless communication system according to an embodiment of the invention.

BS 200/300 includes processor 201/301, memory 202/302 and radio frequency (RF) unit 203/303.With processing The memory 202/302 that device 201/301 couples stores the various information for driving processor 201/301.It is coupled to processor 201/301 RF units 203/303 send and/or receive radio signal.The function of the processor 201/301 realization proposition, Process and/or method.In the embodiment being previously mentioned, the operation of BS can be realized by processor 201/301.

MTC device 100 includes processor 101, memory 102 and RF units 103.It is coupled to the memory of processor 101 Various information of 102 storages for driving processor 101.The RF units 103 for being coupled to processor 101 send and/or receive nothing Line electric signal.The processor 101 realizes function, process and/or the method proposed.

The processor may include at application-specific integrated circuit (ASIC), individual chipset, logic circuit and/or data Manage unit.Memory may include read-only memory (ROM), random access memory (RAM), flash memory, storage card, storage medium And/or other equivalent storage devices.RF units may include the baseband circuit for handling radio signal.When the present invention's When embodiment is implemented in software, above-mentioned method can be for executing the module of above-mentioned function (that is, mistake Journey, function etc.) it realizes.The module can store in memory, and can be executed by processor.The memory can be put It sets in the inside or outside of processor, and can processor be coupled to by using various well known device.

Although the system of above-mentioned demonstration has been based on the flow chart that step wherein or module sequentially list and retouches It states, step of the invention is not limited to some sequence.Therefore, some step can be in different steps, or with different Sequence or relative to being performed simultaneously as described above.In addition, it will be understood by those skilled in the art that the step of the flow chart not It is exclusive.More precisely, step in addition may include wherein or one or more steps can be in the model of the present invention Enclose interior deletion.

Claims (10)

1. a kind of for executing the method measured, this method includes：

It is received from serving cell and measures sub-frame mode for the first of serving cell and in relation to the small of the first and second neighboring communities The help information of area's specific reference signals (CRS)；

It is received from the serving cell and measures sub-frame mode for the second of described first and second neighboring community,

Wherein, if the serving cell and first neighboring community are corresponding to small to the attacker of second neighboring community Area, second neighboring community correspond to victim's cell, if the CRS of the serving cell and second neighboring community CRS conflicts, and if the CRS of first neighboring community does not conflict with the CRS of second neighboring community, the reception Second measure sub-frame mode and be based on almost blank subframe (ABS) mode setting；With

Sub-frame mode execution is measured for described first and the measurement of second neighboring community based on described second.

2. according to the method described in claim 1, wherein, the second measurement sub-frame mode of the reception is arranged to the ABS The subset of pattern.

3. according to the method described in claim 1, wherein, the second measurement sub-frame mode of the reception be arranged to it is described Abs mode is identical.

4. according to the method described in claim 1, wherein, the cell identifier (ID) of the serving cell and described second adjacent Cell ID 6 remainders of mould having the same of cell, and the cell ID of first neighboring community has different 6 remainders of mould.

5. according to the method described in claim 1, wherein, the CRS of the first neighboring community not CRS with the serving cell Conflict.

6. a kind of user equipment for executing measurement, including：

Receiver, the receiver is used to receive measures sub-frame mode and related first and second phase for the first of serving cell The help information of the cell specific reference signal (CRS) of adjacent cell and for described first and second neighboring community second Sub-frame mode is measured,

Wherein, if the serving cell and first neighboring community are corresponding to small to the attacker of second neighboring community Area, second neighboring community correspond to victim's cell, if the CRS of the serving cell and second neighboring community CRS conflicts, and if the CRS of first neighboring community does not conflict with the CRS of second neighboring community, for described First and second neighboring community the reception second measurement sub-frame mode be based on almost blank subframe (ABS) pattern set It sets；With

Controller, the controller, which is used to measure sub-frame mode based on described second to execute, is used for described first and second phase The measurement of adjacent cell.

7. user equipment according to claim 6, wherein the second measurement sub-frame mode received is arranged to the son of abs mode Collection.

8. user equipment according to claim 6, wherein the second measurement sub-frame mode of the reception is arranged to and institute It is identical to state abs mode.

9. user equipment according to claim 6, wherein the cell ID of the serving cell and second neighboring community Cell ID 6 remainders of mould having the same, and the cell ID of first neighboring community have different 6 remainders of mould.

10. user equipment according to claim 6, wherein the CRS of first neighboring community not with the serving cell CRS conflict.