CN103220119B

CN103220119B - A kind of synchronous method and device of detected carrier

Info

Publication number: CN103220119B
Application number: CN201210018346.5A
Authority: CN
Inventors: 苟伟; 戴博; 左志松; 夏树强
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2012-01-19
Filing date: 2012-01-19
Publication date: 2017-11-28
Anticipated expiration: 2032-01-19
Also published as: CN103220119A

Abstract

The invention discloses a kind of synchronous method and device of detected carrier, including：User equipment determines the carrier information of first carrier according to the carrier information of the second carrier wave, and the channel condition information measurement pilot tone (CSI RS) of first carrier is calculated according to the carrier information of first carrier；User equipment receives CSI RS according to the carrier information of first carrier from first carrier, by the CSI RS received compared with the CSI RS being calculated, confirm whether first carrier and the second carrier wave synchronous and user equipment and first carrier whether synchronization.The invention provides a kind of scheme whether synchronous with backward compatibility carrier wave from UE sides checking new carrier wave, when ensure that base station uses new carrier wave for UE configurations, and it is operated in backward compatibility carrier wave, UE can interpolate that whether backward compatibility carrier wave is synchronous with new carrier wave, so as to which carrier wave of the direct base station for UE is dispatched.

Description

A kind of synchronous method and device of detected carrier

Technical field

The present invention relates to field of mobile wireless communication, more particularly to the method and device that a kind of detected carrier is synchronous.

Background technology

Development with Mobile Communication Industry and the continuous growth to mobile data services demand, people are to mobile communication Speed and service quality requirement more and more higher, then in 3G (Third Generation) Moblie (3G) also without before extensive commercial, The research-and-development activity to next generation mobile communication system is just had begun to, wherein comparing typically third generation cooperation partner Long Term Evolution (LTE) project started with plan (3GPP), the available a width of 20MHz of maximum spectrum band of LTE system (megahertz Hereby).With the further evolution of network, evolution systems of the LTE-A (evolution LTE) as LTE, it can provide up to 100MHz's Spectral bandwidth, more flexible higher-quality communication is supported, while lte-a system possesses good backwards compatibility.In LTE-A systems There are multiple component carriers (CC, component carrier) in system, a LTE terminal can only operate in some backward compatibility CC on, and the stronger LTE-A terminals of ability can be received on multiple CC simultaneously.Realize LTE-A terminal simultaneously Data are transmitted and received in multiple component carriers, so as to reach the purpose of lifting bandwidth.The technology is referred to as multi-carrier polymerizing Technology.

Multi-carrier polymerizing technology is supported in lte-a system, by multi-carrier polymerizing in the hope of reaching bigger bandwidth for transmission Data.Most five carrier waves of base station subordinate, these carrier waves are referred to as component carrier, are all the carrier waves with backwards compatibility.Institute Carrier wave of the meaning with backwards compatibility, refer to be equipped with these carrier waves necessary specified in LTE R8/R9/R10 systems Control channel and reference signal, and perform the transmission mechanism of flow as defined in LTE R8/R9/R10 and system broadcast message, The transmission mechanism of beep-page message, perform cell switching/gravity treatment mechanism specified in LTE R8/R9/R10.

With the development of technology, a kind of new carrier wave is proposed in LTE R11, the detailed characteristics of this carrier wave are also being begged for In, at present it has been confirmed that new carrier wave can not be independently operated, needs and backward compatibility carrier pairings use, by polymerization technique, So that new carrier wave plays a part of expanding backward compatibility carrier-wave transmission data bandwidth, for convenience of calling, claim herein in this LTE The new carrier wave proposed is N-type carrier wave.Cell reference letter in LTE R8/R9/R10 is not provided in N-type carrier wave (new carrier wave) Number (CRS), this is examined primarily to due to the CRS interference brought and because CRS expenses are excessive between reducing carrier wave in new carrier wave Consider and instead of original CRS using new reference signal.Further, the major-minor synchronization (PSS/SSS) in new carrier wave is not to match somebody with somebody , it is now recognized that PSS/SSS is optional in new carrier wave, and PSS/SSS must match somebody with somebody in LTE R8/R9/R10, be that UE is used Come what is synchronized with carrier wave.

At present according to the progress of new carrier wave, it is believed that new carrier wave and backward compatibility carrier wave are divided into sync carrier and asynchronous Carrier wave.It is transmitted in LTE R8/R9/R10 for the requirement of carrier aggregation technology, two carrier waves being polymerize in base station side When, it is necessary to meet that certain time difference requires, this time difference requires can to ensure substantially two carrier waves from base station directly (LTE simultaneously Without the introducing of RRH node before R11, RRH node is introduced in LTER11, UE is reached so existing after carrier wave is forwarded by RRH Situation) keep synchronous substantially when reaching UE, but still need in two carrier waves while configure PSS/SSS's.UE can lead to The major-minor synchronization crossed in above-mentioned two carrier wave is synchronized with two carrier waves respectively, and number is received respectively from carrier wave so as to realize According to.And for new carrier wave technology, if base station side is only kept, new carrier wave is synchronous with backward compatibility carrier wave to be sent, once PSS/SSS is configured without in new carrier wave, then it is possible to cannot be guaranteed that new carrier wave is synchronous with backward compatibility carrier wave in UE sides, Such as new carrier wave and backward compatibility carrier wave do not undergo the transmission of identical node, or new carrier wave and backward compatibility carrier wave are not belonging to In same band (bandwidth), because carrier frequency is very different, cause can not be synchronous.

The content of the invention

The technical problem to be solved in the present invention is to provide a kind of synchronous method and device of detected carrier, it is capable of detecting when It is whether synchronous between the new carrier wave proposed in LTE and backward compatibility carrier wave.

In order to solve the above technical problems, the method that a kind of detected carrier of the present invention is synchronous, including：

User equipment determines the carrier information of first carrier according to the carrier information of the second carrier wave, and is carried according to described first The carrier information of ripple calculates the channel condition information measurement pilot tone (CSI-RS) of the first carrier；

The user equipment receives CSI-RS according to the carrier information of the first carrier from the first carrier, will connect The CSI-RS received compared with the CSI-RS being calculated, confirm the first carrier and the second carrier wave it is whether synchronous and Whether user equipment is synchronous with first carrier.

Further, the carrier information includes：Frame number, subframe numbers, timeslot number and OFDM (OFDM) symbol Index.

Further, CSI-RS is received from the first carrier according to the carrier information of the first carrier, including：

User equipment receive information from the first carrier, it is true according to the CSI-RS configuration information being previously received Determine the positions of CSI-RS in the information, CSI-RS is obtained from information according to the carrier information of the first carrier.

Further, the CSI-RS of the first carrier is calculated according to the carrier information of first carrier, including：

User equipment is believed according to the configuration information for the first carrier being previously received and the carrier wave of the first carrier Breath calculates the CSI-RS of first carrier initial value c_init, it is describedIts In, the n_sThe timeslot number included in carrier information for the first carrier, the l are the carrier information of the first carrier In the OFDM index that includes, it is describedThe cell ID included in configuration information for the first carrier, the N_CPFor Cyclic prefix (CP) type included in the configuration information of the first carrier.

Further, in addition to：

The user equipment uses the initial value c of the CSI-RS_init, according to the timeslot number and OFDM symbol of first carrier Index calculate first carrier channel condition information measurement pilot toneIt is described Wherein, c is generation CSI-RS sequence, and c initial value is c_init,Carried for described first Resource block (RB) quantity of ripple.

Further, by the CSI-RS received compared with the CSI-RS being calculated, the first carrier is confirmed With whether the second carrier wave synchronous and user equipment and first carrier it is whether synchronous, including：

The CSI-RS received and the CSI-RS being calculated are subjected to correlation operation, if receive The CSI-RS and CSI-RS the being calculated degree of correlation meets the thresholding of setting, then it is assumed that the CSI-RS received and calculating Obtained CSI-RS is identical, confirms first carrier and the second carrier synchronization, and user equipment is synchronous with first carrier.

If the CSI-RS received is identical with the CSI-RS being calculated, confirm that first carrier and the second carrier wave are same Step, and user equipment is synchronous with first carrier.

Further, in addition to：

The user equipment preserve described in subframe where the CSI-RS that receives total data, received described When the CSI-RS and CSI-RS being calculated is differed, from the data of subframe where the CSI-RS received preserved At the time point of the CSI-RS of adjustment interception forward or backward on the basis of the CSI-RS received, CSI-RS is intercepted again, and will The CSI-RS for intercepting to obtain again is compared with the CSI-RS being calculated, at the CSI-RS for intercepting to obtain and the meter again When obtained CSI-RS is identical, according to the interception CSI-RS of adjustment time point, the first carrier and the second carrier wave are confirmed Between time difference.

Further, in addition to：

When time difference of the user equipment between the first carrier and second carrier wave is less than time gate limit value, Confirm the first carrier and second carrier synchronization, and user equipment is synchronous with first carrier；If the first carrier Time difference between second carrier wave exceeds the time gate limit value, then confirms the first carrier and second carrier wave It is asynchronous, and user equipment is asynchronous with first carrier.

Further, in addition to：

The user equipment is after confirming whether the first carrier is synchronous with the second carrier wave, by the first carrier and the Whether synchronous result is by confirming that (ACK), non-acknowledgement (NACK) or RRM (RRM) measurement report are fed back for nd carrier To base station.

Further, the first carrier is the N-type carrier wave in Long Term Evolution (LTE), and second carrier wave is LTE R8/ The carrier wave that backward compatibility carrier wave in R9/R10, the first carrier and the second carrier wave use for pairing.

Further, user equipment determines the carrier information of first carrier according to the carrier information of the second carrier wave, including：

User equipment thinks that first carrier is synchronous in time with the second carrier wave, gives tacit consent to the carrier information and of first carrier Frame number, subframe numbers, timeslot number in the carrier information of nd carrier is identical with the value of the index of OFDM symbol.

Further, the synchronous device of a kind of detected carrier, including：Carrier information determining unit, channel condition information are surveyed Pilot tone (CSI-RS) computing unit, CSI-RS receiving units and comparing unit are measured, wherein：

The carrier information determining unit, for determining that the carrier wave of first carrier is believed according to the carrier information of the second carrier wave Breath；

The CSI-RS computing units, for the carrier wave letter of the first carrier determined according to the carrier information determining unit Breath, calculate the CSI-RS of the first carrier；

The CSI-RS receiving units, received for the carrier information according to the first carrier from the first carrier CSI-RS；

The comparing unit, the CSI-RS and CSI-RS for the CSI-RS receiving units to be received calculate single The CSI-RS that member is calculated is compared, and confirms whether the first carrier and the second carrier wave synchronous and user equipment and Whether one carrier wave is synchronous.

Further, the CSI-RS receiving units, specifically for the receive information from the first carrier, according to advance The CSI-RS configuration information received determines the positions of CSI-RS in the information, according to the carrier information of the first carrier from letter CSI-RS is obtained in breath.

Further, the CSI-RS computing units, specifically for matching somebody with somebody according to the first carrier being previously received Confidence ceases and the CSI-RS of the carrier information of first carrier calculating first carrier initial value c_init, it is describedWherein, the n_sFor the carrier information of the first carrier In the timeslot number that includes, the l is the OFDM included in the carrier information of the first carrier index, describedTo be described The cell ID included in the configuration information of first carrier, the N_CPThe circulation included in configuration information for the first carrier Prefix (CP) type.

Further, the CSI-RS computing units, it is also used for the initial value c of the CSI-RS_init, according to first The timeslot number of carrier wave and the index of OFDM symbol calculate the channel condition information measurement pilot tone of first carrierIt is described Wherein, c is generation CSI-RS sequence Row, c initial value is c_init,For resource block (RB) quantity of the first carrier.

Further, the comparing unit, if the CSI-RS received specifically for the CSI-RS receiving units with The CSI-RS that the CSI-RS computing units are calculated is identical, then confirms first carrier and the second carrier synchronization, and user sets It is standby synchronous with first carrier.

Further, the CSI-RS receiving units, it is additionally operable to the complete of subframe where the CSI-RS that receives described in preserving Portion's data；

The comparing unit, it is additionally operable to differ in the CSI-RS received and the CSI-RS being calculated When, with the CSI- received from the data of subframe where the CSI-RS received of CSI-RS receiving units preservation At the CSI-RS of adjustment interception forward or backward time point, intercept CSI-RS again on the basis of RS, and will intercept obtained CSI-RS again It is identical with the CSI-RS being calculated at the CSI-RS for intercepting to obtain again compared with the CSI-RS being calculated When, according to the interception CSI-RS of adjustment time point, confirm the time difference between the first carrier and the second carrier wave.

Further, the comparing unit, the time difference being additionally operable between the first carrier and second carrier wave During less than time gate limit value, the first carrier and second carrier synchronization are confirmed；If the first carrier and described the Time difference between nd carrier exceeds the time gate limit value, then confirms that the first carrier is asynchronous with second carrier wave.

In summary, the invention provides a kind of side whether synchronous with backward compatibility carrier wave from UE sides checking new carrier wave Case, when ensure that base station uses new carrier wave for UE configurations, and it is operated in backward compatibility carrier wave, UE can interpolate that backward compatibility Whether carrier wave is synchronous with new carrier wave, so as to which carrier wave of the direct base station for UE is dispatched.

Brief description of the drawings

Fig. 1 is the flow chart of the transmission method of information in the present invention；

Fig. 2 is the flow chart of the method that detected carrier is synchronous in the present invention；

Fig. 3 is the Organization Chart of the device that detected carrier is synchronous in the present invention；

Fig. 4 is the Organization Chart of the transmitting device of information in the present invention.

Embodiment

In present embodiment, base station carries out information configuration for the operation of first carrier (new carrier wave in LTE), by new carrier wave Configuration information be transferred to UE, to support work of the UE in new carrier wave.Give simultaneously in the system with new carrier wave, When base station is that UE configurations use new carrier wave, base station is notified by the second carrier wave (backward compatibility carrier wave) matched with new carrier wave UE, CSI-RS (channel status instruction reference signal) configuration information in new carrier wave, UE is according to CSI-RS configuration information and new carries The carrier information of ripple, receives CSI-RS in new carrier wave, and according to the carrier information of new carrier wave and the new carrier wave being previously received Configuration information calculate CSI-RS, if the CSI-RS received is identical with the CSI-RS being calculated, then UE then thinks new Carrier wave and the backward compatibility carrier wave of pairing are sync carriers, and user equipment is synchronous with new carrier wave.The carrier information of new carrier wave It is that UE assumes new carrier wave and the backward compatibility carrier synchronization of pairing, according to the carrier information of backward compatibility carrier wave, by new carrier wave Carrier information be defined as it is identical with the carrier information of backward compatibility carrier wave, i.e.,：New carrier wave with pairing backward compatibility carrier wave when Between it is upper synchronous, give tacit consent to frame number in the carrier information of the carrier information of new carrier wave and the backward compatibility carrier wave of pairing, subframe numbers, when Gap number is identical with the value of the index of OFDM symbol.

Present embodiment additionally provides a kind of transmission method of information, the hair of the reference signal synchronous with new carrier wave for UE Send.Base station is configured to the reference signal of synchronization/synchronized tracking, and the Radio Resource control for passing through backward compatibility carrier wave for new carrier wave The configuration information of reference signal is sent to UE by system (RRC) message.The configuration information of reference signal includes：Send reference signal Resource information, cycle information and bandwidth information etc..What if UE received the reference signal for synchronization/synchronized tracking matches somebody with somebody confidence Breath, then/synchronized tracking synchronous with new carrier wave is carried out using reference signal, rather than pass through new carrier wave and the backward compatibility of pairing Carrier wave obtains/synchronized tracking synchronous with new carrier wave in the alignment of time/frequency.

Above-mentioned reference signal can be CSI-RS, cell reference signals (CRS) or decoding demodulated reference signal (DM-RS). Illustrated below by taking CSI-RS as an example.When reference signal uses CSI-RS, the configuration information of reference signal is matched somebody with somebody for CSI-RS Confidence ceases.

It is that UE is sent for the CSI-RS configuration information to new carrier wave synchronization/synchronized tracking by RRC information, can distinguishes The RRC information of UE private types and the RRC information of broadcast type, preferably using RRC information special UE in present embodiment, because To be problematic in that base station can be according to UE's for the UE to be worked in new carrier wave, not all UE synchronization/synchronized tracking Demand selection is configured to the CSI-RS of synchronization/synchronized tracking for it.

For example, when base station know UE and new carrier wave can not synchronous/synchronized tracking when, such as UE sides new carrier wave with after pairing It is not strict time unifying to compatible carrier wave, UE can not be completed synchronous with new carrier wave/synchronous by backward compatibility carrier wave During tracking, base station can be configured to the reference signal of synchronization/synchronized tracking, such as CSI-RS, by matching somebody with somebody for reference signal for the UE Confidence breath is sent to UE by UE special RRC messages.UE utilizes the CSI-RS for synchronization/synchronized tracking that base station is its configuration To complete/synchronized tracking synchronous with new carrier wave.

As shown in figure 1, the transmission method for another information that present embodiment provides, including：

Step 101：Base station configures to the carrier wave in LTE；

Step 102：The configuration information of carrier wave is sent to UE by base station, and the configuration information of carrier wave includes the bandwidth of carrier wave, small One or more in area's ID, CP type, CSI-RS configuration information and downlink transfer pattern.

The configuration information of carrier wave can be sent out by switching command, measuring command, the proprietary orders of UE or system broadcast message Give UE.

The transmission method of this information is described in detail below.

The configuration information of above-mentioned new carrier wave includes：The access frequency point and bandwidth of carrier wave, these information can be as pairings The system information of backward compatibility carrier wave is transmitted in system information block (SIB), it is contemplated that different SIB includes the information content and work( The difference of energy, the access frequency point of new carrier wave and bandwidth can be placed on to the SIB3 or SIB4 of backward compatibility carrier wave after considering In, and need especially to indicate the access frequency point of carrying in SIB3 or SIB4 and bandwidth be new carrier wave access frequency point and band Width, in a manner of distinguishing existing mark carrier wave, if not identifying the access channel and bandwidth for belonging to new carrier wave, then UE meetings Carrier wave as routine is accessed, but due to not having PSS/SSS in new carrier wave, UE can be caused can not to access the new carrier wave. Mark belongs to new carrier wave, and it is new carrier wave that UE can be made, which to know exactly corresponding to the frequency and bandwidth, and UE cans carry according to new The mode of ripple is handled.Or

Above-mentioned frequency and bandwidth are preferably sent to UE by base station by switching command or measuring command, can also pass through UE Proprietary order or system broadcast message are sent to UE.

Above-mentioned frequency and bandwidth can be carried and reconfigured in connection by base station (RRCConnectionReconfiguration) message is sent to UE, can also be in measurement configures (measConfig) message The frequency and bandwidth of new carrier wave are configured, similarly, it is also desirable to which extra increase instruction is new using the type for indicating carrier wave in the message Carrier wave.Or

Bandwidth and frequency point information in view of being required for configuring new carrier wave in more message, so for the ease of realizing The information is readily incorporated into other information, or the configuration information of new carrier wave sets an independent information unit knot Structure, in order to which different message directly quotes the information unit structure.The information unit structure of new carrier wave includes：Carrier type is believed Breath, frequency and bandwidth, can also optionally increase the information with the backward compatibility carrier wave of new carrier wave pairing, and carrier type information is Indicating the information in information unit structure is configured for the carrier wave of that type, can be used as option parameter.After pairing It can imply to send the carrier wave of the information unit structure of the new carrier wave to the information of compatible carrier wave, if for example, new carrier wave Do not include the information of the backward compatibility carrier wave of pairing in information unit structure, be then defaulted as sending the carrier wave of the information unit structure For the backward compatibility carrier wave of pairing, if the information of the backward compatibility carrier wave comprising pairing in the information unit structure of new carrier wave, New carrier wave and the backward compatibility carrier pairings are so then represented, new carrier wave so easily can be directly configured in other message Configuration information.

In present embodiment, the collocation method of cell ID in new carrier wave is also provided, acquiescence uses and pairing in new carrier wave Backward compatibility carrier wave identical cell ID, can so save notice UE new carrier waves cell ID the step of, can also save for The complex process of the actual physical district ID of new carrier wave configuration.For UE, if scheduled use new carrier wave, it can not weigh It is new to carry out RRC establishment of connections and in processes such as registers kernel network access informations.Or

New carrier wave uses virtual subdistrict ID, and virtual subdistrict ID value still needs base station to be notified by backward compatibility carrier wave UE, the mode of notice can have certain difference can also be identical with the frequency of above-mentioned new carrier wave and the advice method of bandwidth, empty Plan cell ID generally requires to be notified by the way of point-to-point, for example, using above-mentioned RRCConnectionReconfiguration message is using point to point system notice UE.Virtual subdistrict ID can also be saved in core The process of heart net side registration, therefore, uses virtual subdistrict ID, then the information unit knot of above-mentioned new carrier wave if new carrier wave , it is necessary to virtual subdistrict ID this parameter for adding that new carrier wave uses in structure.Or new carrier wave uses actual physical area ID, the notice of actual physical district ID is identical with virtual subdistrict ID, for the information unit structure of new carrier wave, increases new carrier wave Cell ID this parameter used.

When new carrier wave uses virtual subdistrict ID, new carrier wave can be good at being used for cooperative multipoint transmission (COMP, Coordinated Multi-Point) scene, used under the scene, can be that new carrier wave configures as needed by base station Flexible virtual subdistrict ID, and there is no Physical Downlink Control Channel (PDCCH, Physical downlink in combination new carrier wave Control channel), CRS and PSS/SSS monopolizing characteristic so that the inter-cell interference under COMP has obtained good association Mediation avoids.

The virtual subdistrict ID of new carrier wave can be determined by base station according to the physics ID for the backward compatibility carrier wave for participating in cooperation It is fixed, because virtual subdistrict ID and backward compatibility carrier wave physics ID are the parameters for generating other information in carrier wave, joining In the case of number identical, other parameters of generation will be identical, such as CSI-RS etc., so can bring about in two carrier waves It is non-orthogonal between CSI-RS, so as to produce interference.Subsequently counted so as long as virtual subdistrict ID decision can be evaded by cell ID Calculate and disturbed caused by other information.

Preferably, the virtual subdistrict ID in new carrier wave is produced and configured for the UE needed by UE dedicated signalings, with Existing physical district ID is different, and the latter is configured for UE all in cell, so the latter will be limited by larger, example Such as, a carrier wave can only configure a physical district ID, and need to consider point of physical district ID between cell adjacent thereto Whether cloth is reasonable, for example, orthogonality.And the configuration of the virtual subdistrict ID in new carrier wave is not limited bar by original physical district ID The constraint of part, for example, base station can be two UE, one virtual subdistrict ID of each self-configuring in a new carrier wave, and pass through respectively UE dedicated signalings notify UE, so can significantly evade the interference in COMP scenes.Obviously, new carrier wave is due to letter Configuration is changed, has deleted PDCCH, CRS and PSS/SSS, in conjunction with the use of the virtual subdistrict ID in present embodiment so that be new Carrier performance is sufficiently embodied in COMP scenes.

Base station can be that multiple UE configure an identical virtual subdistrict ID in new carrier wave.

Base station is that base station generates scrambler sequence according to virtual subdistrict ID after a new carrier wave determines virtual subdistrict ID, is performed Uplink reference signals UL-RS sequence of packets, perform and carry out the processing such as frequency hopping Hopping.

Present embodiment additionally provides the configuration and advice method of cyclic prefix in new carrier wave (CP) type, it is preferable that base Stand use and backward compatibility carrier wave identical CP types, i.e. backward compatibility carrier wave in new carrier wave uses long CP or short CP, then matched somebody with somebody To new carrier wave also correspond to and use long CP or short CP, and which is solidified.When UE is in backward compatibility carrier wave, can is straight Obtain the CP types known in new carrier wave.UE needs to determine the load by retrieving PSS/SSS in a certain carrier wave in the prior art The CP types of ripple, this is primarily due to UE when accessing the carrier wave, it is necessary to first retrieves the PSS/SSS of the carrier wave with same with the carrier wave Step, just obtains CP types while PSS/SSS is retrieved in the prior art, otherwise can not complete mistake synchronous with the carrier wave Journey.But in new carrier wave, because new carrier wave is configured without PSS/SSS, so UE can not be using existing retrieval PSS/SSS's Mode obtains the CP types of new carrier wave, it is also contemplated that the UE to be worked into new carrier wave is needed, it is inevitable first to be matched with new carrier wave Backward compatibility carrier wave in work, so UE is the CP types for first knowing backward compatibility carrier wave, if so regulation new carrier wave and Pairing backward compatibility carrier wave uses identical CP, then UE cans before new carrier wave work is entered know the CP classes of new carrier wave Type, notice CP signaling is so may dispense with, avoid UE retrievals PSS/SSS complex process.Or

The CP type arbitrary dispositions of new carrier wave, then now, base station notifies the CP types in UE new carrier waves by signaling. Preferably, base station is for UE configurations when using new carrier wave, base station by the RRC information in backward compatibility carrier wave or switching command or Measuring command or system broadcast message notify UE, the CP types used in new carrier wave.It can specifically be reconfigured using RRC (RRCConnectionReconfiguration) or in notice new carrier wave and the pairing of the pairing of backward compatibility carrier pairings UE is sent in notification message or in measurement configures (measConfig).Being using CP types if determined as new carrier wave can Configuration, then in above-mentioned new carrier wave information unit, it is necessary to be further added by the parameter for the CP types that new carrier wave uses.

This mode can cause the CP types of new carrier wave to be formulated according to the needs of new carrier wave, for example, it is desired to cover greatly When, base station can be that new carrier wave configures long CP, to reach more preferable effect, and foregoing CP types and backward compatibility by new carrier wave Carrier wave configuration is identical to be unable to reach such flexibility.Or

By the way of a kind of dynamic configuration CP types, i.e., base station is the order for the CP types that UE sends notice new carrier wave When, then order as per advice determines the type of new carrier wave, if base station does not send the order, then base station and UE are silent Recognize new carrier wave and use the backward compatibility carrier wave identical CP types with pairing.At this point for the information unit knot of above-mentioned new carrier wave Structure for the CP type parameters, it is necessary to make some regulations, i.e., when there is no CP type parameters in information unit structure, base station and UE gives tacit consent to new carrier wave use and pairing backward compatibility carrier wave identical CP, and during if the CP type parameters, base station and UE are Performed according to the CP types of parameter configuration.

Access frequency point, bandwidth, cell ID, CP type and the CSI-RS configuration information of above-mentioned new carrier wave should according to different Suitable message bearing can be selected with scene.For example, in cell switch process, in order to reduce the interaction of base station and UE time Number, can be sent in base station UE switching command or measuring command in add above-mentioned information to UE, in order to which UE is to target Carrier wave measures.Here the difference with prior art is, cell ID, the CP type and CSI-RS of new carrier wave can not all pass through UE is obtained after being directly accessed target carrier, and in the switching of the cell of prior art or measurement process, the physical area of Target cell ID, CP type and CRS configurations oneself are obtained after UE is directly accessed Target cell.

The sending method not used in present embodiment to the configuration information of above-mentioned carrier wave limits, and carrier wave matches somebody with somebody confidence Breath can be carried in RRC information, measurement configuration in switching command, measuring command, the proprietary orders of UE and system broadcast message Sent in message or pairing notification message, for the preferably suitable sending method of different scenes.

Base station notifies the CSI-RS configuration information of UE new carrier waves to include by backward compatibility carrier wave：Antenna port number (antennaPortsCount-r10), CSI-RS configuration (resourceConfig-r10), CSI-RS sub-frame configurations (subframeConfig-r10), CSI-RS Power Controls (p-C-r10).The CSI-RS configuration information of new carrier wave is included in base station In the measuring command measured to the UE requirement UE sent for new carrier wave, so measuring command is sent when UE obtains base station Meanwhile also known the CSI-RS configuration information for the carrier wave for needing to measure, UE measurement can be facilitated.Here it is mainly in view of The complexity of CSI-RS configurations, with measuring difference using CRS in the prior art, CRS configurations are fairly simple, so existing skill Reference signal is not provided in measuring command in art, because measurement purpose is different, the specific RRC information used is different, So for the cell for needing to use CSI-RS to measure in present embodiment, base station is required for ordering in the measurement for being sent to UE CSI-RS configuration information is added in order, in order to which UE is measured, and reduces interacting between base station and UE.Certainly, can equally adopt It is transmitted with proprietary order of switching command and UE etc..

Present embodiment additionally provides a kind of synchronous method of detected carrier, as shown in Fig. 2 including：

Step 201：UE according to the carrier information of the backward compatibility carrier wave matched with new carrier wave, it is determined that new carrier wave with after to In the case of compatible carrier wave synchronization, the carrier information of new carrier wave；

New carrier wave is given tacit consent in present embodiment with matching the timeslot number n of backward compatibility carrier wave_sWith the OFDM symbol l in time slot To align, i.e. the n of new carrier wave_sWith l and the corresponding n for matching backward compatibility carrier wave_sIt is strict time alignment with l.

Step 202：UE receives the configuration information for the carrier wave that base station is sent；

Step 203：UE calculates the CSI-RS of new carrier wave according to the carrier information of new carrier wave；

UE first calculates the CSI-RS of new carrier wave initial value according to the configuration information of new carrier wave and the carrier information of new carrier wave c_init；

CSI-RS initial values c_initCalculation formula：

Wherein, n_sFor the carrier information of new carrier wave In the timeslot number that includes, l is the OFDM included in the carrier information of new carrier wave index,For in the configuration information of new carrier wave Comprising cell ID, N_CPFor the CP types included in the configuration information of new carrier wave.

UE reuses CSI-RS initial value c_init, new carry is calculated according to the timeslot number of new carrier wave and the index of OFDM symbol The channel condition information measurement pilot tone of ripple Wherein, c is generation CSI-RS sequence, and c initial value is c_init,For resource block (RB) quantity of the first carrier.

Step 204：The frequency and bandwidth information for the new carrier wave that UE is sent according to base station by backward compatibility carrier wave, Yi Jishang The carrier information of the new carrier wave of determination is stated, CSI-RS is received in new carrier wave；

User equipment is the receive information from first carrier, and CSI- is determined according to the CSI-RS configuration information being previously received The positions of RS in the information, CSI-RS is intercepted from information according still further to the carrier information of new carrier wave.

Step 205：Whether the CSI-RS that UE detections receive and the sequence calculated through the above way are identical, if phase Together, then it is assumed that the carrier information of the new carrier wave of above-mentioned determination is correct in new carrier wave, you can draw new carrier wave and pairing Backward compatibility carrier wave is stringent synchronization, i.e., frame number, subframe numbers, OFDM symbol are all that strict time is alignd, also, user sets Standby with first carrier is synchronous, and such UE cans are protected by the frame number in backward compatibility carrier wave, subframe numbers, OFDM symbol Hold and safeguard that oneself is synchronous with new carrier wave.

Here really two obtained CSI-RS are carried out related calculation, identical are judged whether according to correlation peak, If the CSI-RS received and the CSI-RS the being calculated degree of correlation meet the thresholding of setting, then it is assumed that the CSI-RS received It is identical with the CSI-RS being calculated.

This conclusion information can be sent to base station by UE, after this conclusion is learnt in base station, it is possible to new using this for UE configurations Carrier wave.Certainly, the reason for conclusion can also be measured failure by UE as RRM is sent to base station.Certainly, UE can not also be anti- The result is presented to base station, UE is only by measurement feedback to base station.

In addition, present embodiment additionally provides a kind of downlink transfer patterns of UE in new carrier wave, to cause UE to know certainly In the case that oneself is synchronous between new carrier wave and backward compatibility carrier wave, how base station allows UE to be worked in new carrier wave.

Consider a variety of transmission modes be present in LTE till now, then for the characteristic of new carrier wave, present embodiment proposes new The transmission mode of carrier wave uses following mode：

The downlink transfer pattern includes downlink transfer pattern 9, and, DCI (Downlink in downlink transfer pattern 9 Control Information, Downlink Control Information) form be DCI Format (form) 1A, Downlink Control Information is corresponding Data in PDSCH (Physical Downlink Shared Channel) transmission means be single antenna port transmission mode, or, downlink transfer mould DCI form is DCI Format 1A in formula 9, and corresponding data is based on customer special reference signal in PDSCH transmission means Diversity mode.

The downlink transfer pattern also includes at least one of：

The downlink transfer pattern that single antenna port 7 is transmitted is used only in PDSCH；

PDSCH is the downlink transfer pattern based on customer special reference signal diversity mode；

Descending control information format corresponding to above-mentioned two downlink transfer pattern is DCI Format 1 or DCIFormat 1A；Or descending control information format corresponding to above-mentioned two downlink transfer pattern is new DCI Format or DCI Format 1A；Or descending control information format corresponding to above-mentioned two downlink transfer pattern is new DCI Fonnat.

That is, if UE is arranged to use Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI, Cell RadioNetwork by high level Temporary Identifier) CRC (CRC, Cyclical RedundancyCheck) of scrambling carries out thing Down control channel (PDCCH, Physical Downlink ControlChannel) decoding is managed, then UE should arrive according to table 1 Respective combination defined in table 6 decodes PDCCH and all related PDSCH, wherein, the PDCCH also includes enhancing PDCCH；

Table 3 below downlink transfer pattern x into table 6 can also only include a DCIFormat corresponding in following tables；

Following DCI Format Z are DCI Format 1A or new DCI Format；

Following DCI Format Y are DCI Format 1 or new DCI Format；

Table 1

Table 2

Table 3

Table 4

Table 5

Table 6

Embodiment 1：

There are two carrier waves in a certain system, it is assumed that one is the carrier wave for having backward compatibility property, and one is described New carrier wave, assume in the present embodiment to be configured without independent PSS/SSS in new carrier wave.

First, backward compatibility carrier wave and the new carrier wave are matched in base station, and unpaired message is sent into backward compatibility UE in carrier wave.Because new carrier wave does not support UE to be directly accessed, so all UE are from backward compatibility carrier wave access system, Then base station carries out the configuration schedules of carrier wave to UE.For example, some UE configurations use new carrier wave.

Specifically, the information that backward compatibility carrier wave and the new carrier wave are matched is sent to UE by base station so that UE knows, after It is that pairing uses relation to compatible carrier wave and which new carrier wave.Base station by some common signal channels in new carrier wave, important be System information is sent to UE by the backward compatibility carrier wave of pairing so that UE knows the relevant configuration in new carrier wave.In the present embodiment Configuration new carrier wave uses identical cell ID, new carrier wave use and backward compatibility identical CP types with backward compatibility carrier wave, but CSI-RS applicable cases are allowed for, so new carrier wave uses short CP.So may dispense with base station notice UE new carrier waves makes Cell ID information and CP type informations.Such as in present embodiment, base station is at least needed the CSI-RS in new carrier wave Configuration information is sent to UE, and the configuration information is：Antenna port number (antennaPortsCount-r10), CSI-RS moneys Source configuration (resourceConfig-r10), CSI-RS sub-frame configurations (subframeConfig-r10), CSI-RS Power Controls (p-C-r10)。

Base station side is when using new carrier wave, it is necessary to the requirement execution sent according to carrier aggregation as defined in existing protocol, example As base station need the time difference that two carrier waves for ensureing polymerization are sent in base station side no more than agreement as defined in maximum (referring specifically to LTE TS36.104), so, two carrier waves are stringent synchronizations when base station side is transmitted.Latter two right carrier wave passes through sky Port transmission, due to the transmission node of the frequency characteristic of carrier wave, UE mobility and experience, may cause two carrier waves to During up to UE, the stringent synchronization between carrier wave is destroyed, but because base station does not know that backward compatibility carrier wave and new carrier wave reach UE During side, if strict synchronization is also maintains, so, in the embodiment, further, if base station needs to use newly for UE During carrier-wave transmission data, first base station require UE measure for new carrier wave (be primarily referred to as RRM measurements here, base station according to Measurement result judges new carrier wave for UE if appropriate for activation), then because UE does not know whether itself protects with new carrier wave Strict synchronization is held, because not having PSS/SSS configurations in new carrier wave, the new carrier wave measurement of base station requirement is received in UE Afterwards, UE is handled in the following way：

After UE, which receives base station, requires to perform the order of new carrier wave measurement, UE sides acquiescence new carrier wave and backward compatibility carrier wave It is stringent synchronization, it is believed that new carrier wave and backward compatibility carrier wave are close alignments in time orientation, because UE is to know The frame number of backward compatibility carrier wave, timeslot number, the index of subframe numbers and OFDM symbol, so frame number corresponding to UE acquiescence new carrier waves, Timeslot number, the index of subframe numbers and OFDM symbol and backward compatibility carrier wave are completely the same.So UE is true by backward compatibility carrier wave The index value for having determined the frame number of new carrier wave, timeslot number, subframe numbers and OFDM symbol receives CSI-RS, Ran Houjian in new carrier wave Survey the CSI-RS data received and whether the CSI-RS calculated by specific CSI-RS configuration information be identical：

It is if identical, then it is assumed that foregoing hypothesis UE sides hypothesis new carrier wave is that strict time is alignd with backward compatibility carrier wave Conclusion is to set up, and now UE then thinks that new carrier wave and backward compatibility carrier wave are stringent synchronizations, i.e. the frame number of new carrier wave, time slot Number, the index of subframe numbers and OFDM symbol alignd with backward compatibility carrier wave, UE passes through the frame in phase compatible carrier wave after determination Number, frame number in corresponding new carrier wave, timeslot number, subframe are can be obtained by after the index of timeslot number, subframe numbers and OFDM symbol Number and OFDM symbol index, so as to realize UE for UE worked in new carrier wave offer basis.UE will detect what is obtained in UE sides New carrier wave feeds back to base station with the conclusion that backward compatibility carrier wave is stringent synchronization, and base station is after conclusion is obtained, in that case it can be decided that whether New carrier wave is used for UE configurations.So, base station is that UE configurations use new carrier wave.

If it is different, it is without tight that so UE, which then obtains new carrier wave and backward compatibility carrier wave two carrier waves when reaching UE sides, The conclusion is fed back to base station by the synchronous conclusion of lattice, UE, and base station can decide whether to carry using new for UE configurations according to the conclusion Ripple.So, base station will not be that UE configurations use new carrier wave.

Above-mentioned UE judge new carrier wave with match backward compatibility carrier wave whether synchronous conclusion, UE can pass through ACK/ NACK implies feedback, can also be carried by the message of RRM measurement reports and feed back to base station.

Embodiment 2：

The embodiment is substantially identical with embodiment 1, and difference is, if UE is sentenced by the CSI-RS of new carrier wave Break new carrier wave it is asynchronous with backward compatibility carrier wave when, further UE needs to be calculated according to CSI-RS is further, to determine Specific time difference value between new carrier wave and backward compatibility carrier wave.

Specifically, the information that backward compatibility carrier wave and the new carrier wave are matched is sent to UE by base station so that UE knows, after It is that pairing uses relation to compatible carrier wave and which new carrier wave.Base station by some common signal channels in new carrier wave, important be System information is sent to UE by the backward compatibility of pairing so that UE knows the relevant configuration in new carrier wave.Such as in the present invention, base Standing at least needs the CSI-RS configuration information in new carrier wave being sent to UE, and the configuration information is：Antenna port number (antennaPortsCount-r10), CSI-RS configuration (resourceConfig-r10), CSI-RS sub-frame configurations (subframeConfig-r10), CSI-RS Power Controls (p-C-r10), the cell ID used in new carrier wave, make in new carrier wave CP types.For the CP types of new carrier wave, the CP types of new carrier wave are provided in present embodiment to be carried with backward compatibility The CP types of ripple are consistent.So be advantageous to carry out strict time unifying between new carrier wave and pairing backward compatibility carrier wave.

Base station side is when using new carrier wave, it is necessary to the requirement execution sent according to carrier aggregation as defined in existing protocol, example As base station need the time difference that two carrier waves for ensureing polymerization are sent in base station side no more than agreement as defined in maximum (referring specifically to LTE TS36.104), so, two carrier waves are stringent synchronizations when base station side is transmitted.Latter two right carrier wave passes through sky Port transmission, due to the transmission node of the frequency characteristic of carrier wave, UE mobility and experience, may cause two carrier waves to During up to UE, the stringent synchronization between carrier wave is destroyed, but because base station does not know that backward compatibility carrier wave and new carrier wave reach UE During side, if strict synchronization is also maintains, so, in the embodiment, further, if base station needs to use newly for UE During carrier-wave transmission data, first base station require UE measure for new carrier wave (be primarily referred to as RRM measurements here, base station according to Measurement result judges new carrier wave for UE if appropriate for activation), then because UE does not know whether oneself protects with new carrier wave Strict synchronization is held, because configured in new carrier wave without PSS/SSS again, the new carrier wave measurement of base station requirement is received in UE Afterwards, UE is handled in the following way：

After UE, which receives base station, requires to perform the order of new carrier wave measurement, UE sides acquiescence new carrier wave and backward compatibility carrier wave Stringent synchronization, it is believed that new carrier wave and backward compatibility carrier wave are close alignments in time orientation, due to UE be know it is backward Frame number, timeslot number, subframe numbers, the index of OFDM symbol of compatible carrier wave, so frame number, time slot corresponding to UE acquiescence new carrier waves Number, the index of subframe numbers, OFDM symbol and backward compatibility carrier wave be completely the same.So UE is determined by backward compatibility carrier wave The frame number of new carrier wave, timeslot number, subframe numbers, the index of OFDM symbol, the CSI-RS in new carrier wave is received, then detection receives To the CSI-RS and CSI-RS that is calculated by specific CSI-RS configuration information it is whether identical：

It is if identical, then it is assumed that foregoing hypothesis UE sides hypothesis new carrier wave is that strict time is alignd with backward compatibility carrier wave Conclusion is to set up, and now UE then thinks that new carrier wave and backward compatibility carrier wave are stringent synchronizations, i.e., the frame of new carrier wave, time slot, Subframe, the index of OFDM symbol align with backward compatibility carrier wave, and UE passes through the frame number in phase compatible carrier wave after determination, time slot Number, frame number, timeslot number, subframe numbers, OFDM symbols in corresponding new carrier wave are can be obtained by after the index of subframe numbers, OFDM symbol Number index, so as to realize UE for UE worked in new carrier wave offer basis.UE is by the new carrier wave for detecting to obtain in UE sides with after Base station is fed back to the conclusion that compatible carrier wave is stringent synchronization, base station is after conclusion is obtained, in that case it can be decided that whether be that UE configurations make Use new carrier wave.So, base station is that UE configurations use new carrier wave.

If it is different, UE sides further can determine actually to deposit between new carrier wave and backward compatibility carrier wave by CSI-RS The time difference.Specifically, before CSI-RS of the UE in the new carrier wave that detection receives, it should by the data of the new carrier wave of reception Preserve, when UE, which obtains new carrier wave, to be occurred with the nonsynchronous situation of backward compatibility carrier wave, UE continues from the data of preservation, with institute State the time point of the CSI-RS of adjustment interception forward or backward on the basis of the CSI-RS received, intercept CSI-RS again, (be now by Progressively verified according to the sampling point of time orientation) the possible CSI-RS of interception, carried out with the CSI-RS being calculated by known parameters Contrast verification, so as to show that the real time between new carrier wave and backward compatibility carrier wave is poor.It is smaller when this time difference (such as the interval of ACK/NACK feedbacks is not influenceed, in another example being no more than 1ms or 0.5 ms, such value does not interfere with The interval of above-mentioned feedback) when, it is synchronous that UE, which is still able to think the new carrier wave of UE sides and backward compatibility carrier wave,.It is if above-mentioned Time difference is bigger, then UE is it can be seen that the new carrier wave and backward compatibility carrier wave of UE sides are nonsynchronous.

Here the time difference described in one is actually provided, it is same between new carrier wave and pairing backward compatibility carrier wave in UE sides As long as it is poor that the step time difference is no more than the regular hour, and this time difference, UE are known, then UE sides can thinks new Carrier wave and pairing backward compatibility carrier wave be it is synchronous, so base station be UE use new carrier wave when, UE can voluntarily according to when Between difference adjustment receive parsing new carrier wave data.

Embodiment 3：

The embodiment and embodiment 1,2 are different, and emphasis describes the configuration of the necessary information of new carrier wave in embodiment 3 And transmission process, in order to which UE can timely obtain these information.

There are 2 carrier waves in a certain system, it is assumed that one is the carrier wave for having backward compatibility property, and one is described new Carrier wave, assume in the present embodiment to be configured without independent PSS/SSS in new carrier wave.

UE for accessing backward compatibility carrier wave, base station is possible to use new carrier wave for its configuration.If according to the present invention Base station plan uses backward compatibility carrier wave for a certain UE configurations, then and base station needs to send the necessary information of new carrier wave for UE, this Shi Jizhan gives the knot by information unit structure of the RRCConnectionReconfiguration message packages containing new carrier wave Parameter in structure assigns value.A kind of value configuration of structure is given below.

New carrier wave information unit structure：{

Frequency

Bandwidth

Cell ID

CP types

}

After base station and UE send and receive the structure, the title for being interpreted as " information unit structure " body embodies the structure It is new wave-carring type.And can regard the carrier wave for sending the structure as with the carrier wave described in structure there is pairing to close System.Frequency, bandwidth, cell ID and CP type are all new carrier waves in description scheme body.Cell ID can be further divided into reality Physical district ID, or virtual cell ID.Virtual cell ID is used only to determine some parameters in new carrier wave, these Parameter needs to use cell ID in the calculation, is just calculated here using virtual cell ID numerical value.UE is ID pairs of virtual subdistrict The carrier wave answered need not establish independent RRC connections.

In the case of for a backward compatibility carrier wave and the pairing of multiple new carrier waves, need to include multiple new loads in structure The information of ripple, the information of each new carrier wave can be according to signaling corresponding to the structure composition above provided, included in same In one structure.It is assumed that new carrier wave use with matching backward compatibility carrier wave identical cell ID, carries for a backward compatibility Ripple and the pairing of 2 new carrier waves when, the structure is as shown below：

New carrier wave information unit structure：{

Frequency

Bandwidth

CP types

Frequency

Bandwidth

CP types

……

}

Embodiment 4：

Embodiment 4 mainly describes the reference signal that base station is configured to synchronization/synchronized tracking for UE, and reference here Signal is primarily referred to as CSI-RS.This main and CSI-RS, which can carry out single set separate configurations, relation.

It can be used in combination with embodiment 1 and embodiment 2, on the basis of embodiment 1 and embodiment 2, when UE confirms not Can by match backward compatibility carrier wave it is synchronous with new carrier wave/synchronized tracking when, and base station is after the above situation is known, base station energy It is the CSI-RS that UE is configured to synchronization/synchronized tracking in new carrier wave enough by RRC information special UE, CSI-RS is configured Information is sent to UE as the configuration information of reference signal, and then UE is same with new carrier wave to complete using described CSI-RS Step/synchronized tracking, to ensure work of the UE in new carrier wave.

Or base station is used for UE and the synchronized tracking of the new carrier wave for configuring specific CSI-RS patterns in new carrier wave. In this case after UE accesses new carrier wave, it is found that the CSI-RS for synchronized tracking of base station configuration is present, then UE just makes Synchronized tracking is done with described CSI-RS, otherwise, UE uses the reference signal in the backward compatibility carrier wave matched with new carrier wave to do The synchronized tracking of new carrier wave.

Base station, which sends the specific CSI-RS configuration information, can pass through system information (such as SIB) or special RRC information is sent to UE.

Base station directly determines whether to configure for UE and used by allowing UE to perform measurement for new carrier wave according to measurement result base station It is the same for new carrier wave of oneself configuration when UE receives base station by special RRC message in the CSI-RS of synchronization/synchronized tracking During the configuration information of the reference signal of step/synchronized tracking, then UE is then performed and new carrier wave using the CSI-RS of the configuration Synchronization/synchronized tracking.Match somebody with somebody if UE is not received by the above-mentioned CSI-RS for synchronization/synchronized tracking by special RRC message Confidence ceases, then UE then determines the same of new carrier wave using new carrier wave with matching the mode of backward compatibility subcarrier time close alignment Step/synchronized tracking.

Whether UE can be that the reference signal of synchronization/synchronized tracking for oneself being configured to new carrier wave judges by base station Synchronous situation between new carrier wave and pairing backward compatibility carrier wave, such as be used for when UE receives base station and sent for it in new carrier wave During the CSI-RS configuration information of synchronization/synchronized tracking, UE then thinks that new carrier wave and the backward compatibility of pairing carry for oneself Stringent synchronization between ripple, oneself need to use the CSI-RS of the configuration complete it is synchronous with new carrier wave/synchronous with Track, otherwise, UE think that for oneself be stringent synchronization between new carrier wave and pairing backward compatibility carrier wave.

It is to be configured without PSS/SSS in new carrier wave as described herein, also without CRS.If it is configured with oneself in new carrier wave PSS/SSS so UE then directly synchronized using the PSS/SSS in new carrier wave with new carrier wave.

As shown in figure 3, present embodiment additionally provides a kind of synchronous device of detected carrier, including：Carrier information determines Unit, CSI-RS computing units, CSI-RS receiving units and comparing unit, wherein：

Carrier information determining unit, for determining the carrier information of first carrier according to the carrier information of the second carrier wave；

CSI-RS computing units, for the carrier information of the first carrier determined according to carrier information determining unit, calculate The CSI-RS of first carrier；

CSI-RS receiving units, CSI-RS is received from first carrier for the carrier information according to first carrier；

Comparing unit, what the CSI-RS for CSI-RS receiving units to be received was calculated with CSI-RS computing units CSI-RS is compared, and determines whether synchronous first carrier and the second carrier wave and user equipment and first carrier are synchronous.

Comparing unit calculates in the CSI-RS that the CSI-RS receiving units receive with the CSI-RS computing units The CSI-RS arrived is identical, then confirms first carrier and the second carrier synchronization, and user equipment is synchronous with first carrier.

Stating carrier information includes：Frame number, subframe numbers, the index of timeslot number and OFDM (OFDM) symbol.

CSI-RS receiving units, specifically for the receive information from first carrier, matched somebody with somebody according to the CSI-RS being previously received Confidence breath determines the positions of CSI-RS in the information, and CSI-RS is obtained from information according to the carrier information of first carrier.

CSI-RS computing units, specifically for according to the configuration information of first carrier and first carrier being previously received Carrier information calculates the CSI-RS of first carrier initial value c_init,Its In, n_sFor the timeslot number included in the carrier information of first carrier, l is the OFDM included in the carrier information of first carrier rope Draw,For the cell ID included in the configuration information of first carrier, N_CPFor the CP included in the configuration information of first carrier Type.

CSI-RS computing units, it is also used for CSI-RS initial value c_init, according to first carrier timeslot number and The index of OFDM symbol calculates the channel condition information measurement pilot tone of first carrier Wherein, c is generation CSI-RS sequence, and c initial value is c_init,For first carrier Resource block (RB) quantity.

CSI-RS receiving units, it is additionally operable to the total data of subframe where preserving the CSI-RS received；

Comparing unit, it is additionally operable to, when the CSI-RS received and the CSI-RS being calculated are differed, connect from CSI-RS Adjusted forward or backward on the basis of the CSI-RS received in the data of subframe where receiving the CSI-RS received that unit preserves At whole interception CSI-RS time point, CSI-RS is intercepted again, and the CSI-RS for intercepting to obtain again is entered with the CSI-RS being calculated Row compare, when the CSI-RS for intercepting to obtain is identical with the CSI-RS being calculated again, according to the interception CSI-RS of adjustment when Between point, confirm the time difference between first carrier and the second carrier wave.

Comparing unit, when being additionally operable to the time difference between first carrier and the second carrier wave and being less than time gate limit value, confirm First carrier and second carrier synchronization, and user equipment is synchronous with first carrier；If first carrier and the second carrier wave it Between time difference exceed time gate limit value, then confirm that first carrier is asynchronous with the second carrier wave, and user equipment and first carrier It is asynchronous.

First carrier is the N-type carrier wave in Long Term Evolution (LTE), and the second carrier wave is backward simultaneous in LTE R8/R9/R10 Hold the carrier wave that carrier wave, first carrier and the second carrier wave use for pairing.

As shown in figure 4, present embodiment additionally provides a kind of transmitting device of information, including：Dispensing unit and transmission are single Member, wherein：

Dispensing unit, for being configured to the carrier wave in Long Term Evolution (LTE)；

Transmitting element, for the configuration information of carrier wave to be sent into user equipment (UE), the configuration information of carrier wave includes carrying The bandwidth of ripple, cell ID (ID), cyclic prefix (CP) type, channel condition information measurement pilot tone (CSI-RS) configuration information and One or more in downlink transfer pattern.

Transmitting element, specifically for configuration information is passed through into switching command, measuring command, the proprietary orders of UE or system broadcasts Message is sent to UE.

Transmitting element, specifically for by the backward compatibility carrier wave with the carrier pairings in LTE by the configuration information of carrier wave It is sent to user equipment.

Cell ID is virtual subdistrict ID or is actual physical district ID.

The configuration information of carrier wave also includes：The access frequency point of carrier wave.

Transmitting element, it is additionally operable to for the carrier wave configuration information cellular construction in LTE, in information unit structure include following It is one or more：Carrier type information, access frequency point, bandwidth, cell ID, CP type, CSI-RS configuration information and downlink transfer Pattern, reference information cellular construction, user equipment is sent to by the configuration information of carrier wave in the message.

Downlink transfer pattern includes downlink transfer pattern 9, data corresponding to the Downlink Control Information in downlink transfer pattern 9 Transmission means of the information in Physical Downlink Shared Channel (PDSCH) is single antenna port transmission, or for based on the proprietary ginseng of user Examine the diversity transmission of signal；Downlink Control Information (DCI) in downlink transfer pattern 9 using DCI Format (form) 1A or DCI Format 1。

Single antenna port transmission is the downlink transfer pattern that single antenna port 7 is transmitted；

Diversity transmission based on customer special reference signal is descending for the diversity transmission based on customer special reference signal Transmission mode.

Present embodiment additionally provides a kind of configuration device of information, including：Dispensing unit, wherein：

Dispensing unit, for configuring the carrier wave in Long Term Evolution (LTE) using identical with the backward compatibility carrier wave of pairing Configuration information.Configuration information includes：Cell ID (ID) and CP types.

One of ordinary skill in the art will appreciate that all or part of step in the above method can be instructed by program Related hardware is completed, and described program can be stored in computer-readable recording medium, such as read-only storage, disk or CD Deng.Alternatively, all or part of step of above-described embodiment can also be realized using one or more integrated circuits.Accordingly Ground, each module/unit in above-described embodiment can be realized in the form of hardware, can also use the shape of software function module Formula is realized.The present invention is not restricted to the combination of the hardware and software of any particular form.

The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention, it is all All any modification, equivalent and improvement made within the spirit and principles in the present invention etc., it should be included in the protection of the present invention Within the scope of.

Claims

1. a kind of synchronous method of detected carrier, it is characterised in that including：

User equipment determines the carrier information of first carrier according to the carrier information of the second carrier wave, and according to the first carrier Carrier information calculates the channel condition information measurement pilot tone CSI-RS of the first carrier；

The user equipment receives CSI-RS according to the carrier information of the first carrier from the first carrier, will receive CSI-RS compared with the CSI-RS being calculated, confirm whether the first carrier and the second carrier wave synchronous and user Whether equipment is synchronous with first carrier.

2. the method as described in claim 1, it is characterised in that the carrier information includes：Frame number, subframe numbers, timeslot number and The index of orthogonal frequency division multiplex OFDM symbol.

3. method as claimed in claim 2, it is characterised in that carried according to the carrier information of the first carrier from described first CSI-RS is received in ripple, including：

User equipment receive information from the first carrier, determined according to the CSI-RS configuration information being previously received The positions of CSI-RS in the information, CSI-RS is obtained from information according to the carrier information of the first carrier.

4. method as claimed in claim 2, it is characterised in that the first carrier is calculated according to the carrier information of first carrier CSI-RS, including：

User equipment is according to the configuration information for the first carrier being previously received and the carrier information meter of the first carrier Calculate the CSI-RS of first carrier initial value c_init, it is describedIts In, the n_sThe timeslot number included in carrier information for the first carrier, the l are the carrier information of the first carrier In the OFDM index that includes, it is describedThe cell ID included in configuration information for the first carrier, the N_CPFor The cyclic prefix CP type included in the configuration information of the first carrier.

5. method as claimed in claim 4, it is characterised in that also include：

The user equipment uses the initial value c of the CSI-RS_init, according to the timeslot number of first carrier and the rope of OFDM symbol Draw the channel condition information measurement pilot tone for calculating first carrierIt is describedIts In, c is generation CSI-RS sequence, and c initial value is c_init,For the resource block RB quantity of the first carrier.

6. the method as described in claim 1, it is characterised in that carry out the CSI-RS received and the CSI-RS being calculated Compare, confirm whether the whether synchronous first carrier and the second carrier wave and user equipment and first carrier are synchronous, including：

The CSI-RS received and the CSI-RS being calculated are subjected to correlation operation, if the CSI-RS received Meet the thresholding of setting with the degree of correlation of the CSI-RS being calculated, then it is assumed that the CSI-RS that receives and be calculated CSI-RS is identical, confirms first carrier and the second carrier synchronization, and user equipment is synchronous with first carrier.

7. the method as described in claim 1, it is characterised in that carry out the CSI-RS received and the CSI-RS being calculated Compare, confirm whether the whether synchronous first carrier and the second carrier wave and user equipment and first carrier are synchronous, including：

If the CSI-RS received is identical with the CSI-RS being calculated, first carrier and the second carrier synchronization are confirmed, And user equipment is synchronous with first carrier.

8. method as claimed in claim 3, it is characterised in that also include：

The total data of subframe where the CSI-RS received described in the user equipment preservation, in the CSI-RS received When being differed with the CSI-RS being calculated, with described from the data of subframe where the CSI-RS received preserved At the CSI-RS of adjustment interception forward or backward time point, intercept CSI-RS, and will intercept again again on the basis of the CSI-RS received Obtained CSI-RS is calculated compared with the CSI-RS being calculated at the CSI-RS for intercepting to obtain again with described CSI-RS it is identical when, according to the interception CSI-RS of adjustment time point, confirm between the first carrier and the second carrier wave Time difference.

9. method as claimed in claim 8, it is characterised in that also include：

When time difference of the user equipment between the first carrier and second carrier wave is less than time gate limit value, confirm The first carrier and second carrier synchronization, and user equipment is synchronous with first carrier；If the first carrier and institute The time difference stated between the second carrier wave exceeds the time gate limit value, then confirms that the first carrier is different from second carrier wave Step, and user equipment is asynchronous with first carrier.

10. the method as described in claim 1, it is characterised in that also include：

The user equipment carries the first carrier and second after confirming whether the first carrier is synchronous with the second carrier wave Whether synchronous result is by confirming that ACK, non-acknowledgement NACK or RRM RRM measurement reports feed back to base station for ripple.

11. the method as described in claim 1, it is characterised in that：

The first carrier is the N-type carrier wave in Long Term Evolution LTE, and second carrier wave is backward in LTE R8/R9/R10 The carrier wave that compatible carrier wave, the first carrier and the second carrier wave use for pairing.

12. method as claimed in claim 1 or 2, it is characterised in that user equipment determines according to the carrier information of the second carrier wave The carrier information of first carrier, including：

User equipment thinks that first carrier is synchronous in time with the second carrier wave, and the carrier information and second for giving tacit consent to first carrier carry Frame number, subframe numbers, timeslot number in the carrier information of ripple is identical with the value of the index of OFDM symbol.

A kind of 13. synchronous device of detected carrier, it is characterised in that including：Carrier information determining unit, channel condition information are surveyed Pilot tone CSI-RS computing units, CSI-RS receiving units and comparing unit are measured, wherein：

The carrier information determining unit, for determining the carrier information of first carrier according to the carrier information of the second carrier wave；

The CSI-RS computing units, for the carrier information of the first carrier determined according to the carrier information determining unit, Calculate the CSI-RS of the first carrier；

The CSI-RS receiving units, CSI- is received from the first carrier for the carrier information according to the first carrier RS；

The comparing unit, based on the CSI-RS for receiving the CSI-RS receiving units and the CSI-RS computing units Obtained CSI-RS is compared, and confirms that the whether synchronous first carrier and the second carrier wave and user equipment and first carry Whether ripple is synchronous.

14. device as claimed in claim 13, it is characterised in that the carrier information includes：Frame number, subframe numbers, timeslot number With the index of orthogonal frequency division multiplex OFDM symbol.

15. device as claimed in claim 14, it is characterised in that：

The CSI-RS receiving units, specifically for the receive information from the first carrier, according to the CSI- being previously received RS configuration informations determine the positions of CSI-RS in the information, and CSI- is obtained from information according to the carrier information of the first carrier RS。

16. device as claimed in claim 14, it is characterised in that：

The CSI-RS computing units, specifically for according to the configuration information of the first carrier that is previously received and described the The carrier information of one carrier wave calculates the CSI-RS of first carrier initial value c_init, it is describedWherein, the n_sThe time slot included in carrier information for the first carrier Number, the l is the OFDM included in the carrier information of the first carrier index, describedFor matching somebody with somebody for the first carrier The cell ID included in confidence breath, the N_CPThe cyclic prefix CP type included in configuration information for the first carrier.

17. device as claimed in claim 16, it is characterised in that：

The CSI-RS computing units, it is also used for the initial value c of the CSI-RS_init, according to the timeslot number and OFDM symbol of first carrier Index calculate first carrier channel condition information measurement pilot toneIt is described Wherein, c is generation CSI-RS sequence, and c initial value is c_init,For the resource block RB quantity of the first carrier.

18. device as claimed in claim 13, it is characterised in that：

The comparing unit, if calculated specifically for the CSI-RS that the CSI-RS receiving units receive and the CSI-RS The CSI-RS that unit is calculated is identical, then confirms first carrier and the second carrier synchronization, and user equipment and first carrier are same Step.

19. device as claimed in claim 15, it is characterised in that：

The CSI-RS receiving units, it is additionally operable to the total data of CSI-RS places subframe received described in preserving；

The comparing unit, it is additionally operable to when the CSI-RS received and the CSI-RS being calculated are differed, from In the data of subframe where the CSI-RS received that the CSI-RS receiving units preserve using the CSI-RS received as Benchmark adjusts interception CSI-RS time point forward or backward, intercepts CSI-RS again, and will intercept obtained CSI-RS and institute again The CSI-RS being calculated is stated to be compared, when the CSI-RS for intercepting to obtain is identical with the CSI-RS being calculated again, According to the interception CSI-RS of adjustment time point, the time difference between the first carrier and the second carrier wave is confirmed.

20. device as claimed in claim 19, it is characterised in that：

The comparing unit, the time difference being additionally operable between the first carrier and second carrier wave are less than time gate limit value When, confirm the first carrier and second carrier synchronization, and user equipment is synchronous with first carrier；If described first carries Time difference between ripple and second carrier wave exceeds the time gate limit value, then confirms that the first carrier carries with described second Ripple is asynchronous, and user equipment is asynchronous with first carrier.