CN103220119A - Carrier synchronization detecting method and device - Google Patents

Abstract

The invention discloses a carrier synchronization detecting method and device. The carrier synchronization detecting method includes the following steps that user equipment confirms carrier information of a first carrier according to carrier information of a second carrier and works out channel state information measurement pilot frequency (CSI-RS) of the first carrier according to the carrier information of the first carrier; and the user equipment receives CRI-RS from the first carrier according to the carrier information of the first carrier, compares the received CSI-RS with the CSI-RS which is worked out, and confirm whether the first carrier and the second carrier are synchronous and whether the user equipment and the first carrier are synchronous. According to the carrier synchronization detecting method and device, a scheme of judging whether a new carrier and a downward compatible carrier are synchronous from the side of the user equipment (UE) is provided. The carrier synchronization detecting method and device guarantees that the UE can judge whether the backward compatible carrier and the new carrier are synchronous when a base station configures the new carrier for the UE to enable the UE to use the new carrier and works in the backward compatible carrier so as to guide carrier dispatch of the base station for the UE.

Description

Method that a kind of detected carrier is synchronous and device

Technical field

The present invention relates to field of mobile wireless communication, relate in particular to synchronous method of a kind of detected carrier and device.

Background technology

Along with the development of mobile communication industry and to the continuous growth of mobile data services demand, people are more and more higher to the requirement of the speed of mobile communication and service quality, so before 3G (Third Generation) Moblie (3G) does not also have extensive commercialization, just begun research-and-development activity to next generation mobile communication system, wherein relatively be typically Long Term Evolution (LTE) project that third generation partner program (3GPP) starts, the available maximum spectrum bandwidth of LTE system is 20MHz (megahertz).Along with the further evolution of network, LTE-A (evolution LTE) can provide the spectral bandwidth up to 100MHz as the evolution system of LTE, supports more flexible higher-quality communication, and the LTE-A system possesses better compatibility backward simultaneously.A plurality of component carriers (CC, component carrier) are arranged in the LTE-A system, and a LTE terminal can only be operated on the CC of some backward compatibility, and the stronger LTE-A terminal of ability can receive on a plurality of CC simultaneously.The terminal that promptly realizes LTE-A is transmitted in a plurality of component carriers and the reception data simultaneously, thereby reaches the purpose that promotes bandwidth.This technology is called as the multi-carrier polymerizing technology.

In the LTE-A system, support the multi-carrier polymerizing technology, by multi-carrier polymerizing in the hope of reaching bigger bandwidth for transmission data.Maximum five carrier waves of base station subordinate, these carrier waves are called as component carrier, all are the carrier waves with backwards compatibility.What is called has the carrier wave of backwards compatibility, be meant and in these carrier waves, all dispose necessary control channel and the reference signal of stipulating in the LTE R8/R9/R10 system, and carry out the flow process of LTE R8/R9/R10 regulation and the transmit mechanism of system broadcast message, the transmit mechanism of beep-page message is carried out the sub-district switching/gravity treatment mechanism of stipulating among the LTE R8/R9/R10.

Development along with technology, a kind of novel carrier wave has been proposed among the LTE R11, the detailed characteristics of this carrier wave also under discussion, can confirm that at present new carrier wave can not independently use, need and backward compatibility carrier wave pairing use, pass through polymerization technique, make new carrier wave play the effect of expanding backward compatibility carrier transmission data bandwidth,, claim that herein the novel carrier wave that proposes among this LTE is a N type carrier wave for convenient address.Do not provide the cell reference signals among the LTE R8/R9/R10 (CRS) in the N type carrier wave (new carrier wave), this mainly is in order to reduce between the carrier wave because the interference that CRS brings and because the CRS expense is excessive considers to use new reference signal to replace original CRS in the new carrier wave.Further, major-minor (PSS/SSS) synchronously in the new carrier wave must not join, and think that at present PSS/SSS is optionally in the new carrier wave, and PSS/SSS must join in LTE R8/R9/R10, is that UE is used for and carrier wave carries out synchronous.

According to the progress of new carrier wave, think that new carrier wave and backward compatibility carrier wave are divided into sync carrier and asynchronous carrier wave at present.Among the LTE R8/R9/R10 for the requirement of carrier aggregation technology, two carrier waves that are aggregated are when base station side sends, need satisfy certain time difference requirement, this time difference requires can guarantee substantially that two carrier waves directly (do not have the introducing of RRH node simultaneously from the base station before the LTE R11, introduced the RRH node among the LTER11, transmitted the situation that the back arrives UE so there is carrier wave by RRH) keep substantially synchronously when arriving UE, but still need to dispose PSS/SSS's simultaneously in two carrier waves.UE can carry out synchronously with two carrier waves respectively synchronously by major-minor in above-mentioned two carrier waves, thereby realizes receiving respectively from carrier wave data.And for new ZAP, if base station side only keeps the synchronized transmission of new carrier wave and backward compatibility carrier wave, in case do not dispose PSS/SSS in the new carrier wave, just might be able to not guarantee the synchronous of new carrier wave and backward compatibility carrier wave in the UE side so, for example new carrier wave does not experience identical node with the backward compatibility carrier wave and sends, perhaps new carrier wave and backward compatibility carrier wave do not belong in the same band (bandwidth), and cause very greatly can not be synchronous because carrier frequency differs.

Summary of the invention

Whether the technical problem to be solved in the present invention provides synchronous method of a kind of detected carrier and device, can detect between the new carrier wave that proposes among the LTE and the backward compatibility carrier wave synchronous.

For solving the problems of the technologies described above, the method that a kind of detected carrier of the present invention is synchronous comprises:

Subscriber equipment is determined the carrier information of first carrier according to the carrier information of second carrier wave, and calculates the channel condition information measurement pilot frequency (CSI-RS) of described first carrier according to the carrier information of described first carrier;

Described subscriber equipment receives CSI-RS according to the carrier information of described first carrier from described first carrier, the CSI-RS that receives and the CSI-RS that calculates are compared, confirm whether synchronous whether described first carrier and second carrier wave and subscriber equipment and first carrier synchronous.

Further, described carrier information comprises: the index of frame number, subframe numbers, timeslot number and OFDM (OFDM) symbol.

Further, from described first carrier, receive CSI-RS, comprising according to the carrier information of described first carrier:

Described subscriber equipment is reception information from described first carrier, determines the position of CSI-RS in information according to the CSI-RS configuration information that receives in advance, obtains CSI-RS according to the carrier information of described first carrier from information.

Further, calculate the CSI-RS of described first carrier, comprising according to the carrier information of first carrier:

The configuration information of the described first carrier that the subscriber equipment basis receives in advance and the carrier information of described first carrier calculate the initial value c of the CSI-RS of described first carrier _Init, described $c_{\mathrm{init}}=2^{10}\·(7\·(n_s+1)+l+1)\·(2\·N_{\mathrm{ID}}^{\mathrm{cell}}+1)+2\·N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CP}},$ Wherein, described n _sThe timeslot number that comprises in the carrier information for described first carrier, described l are the index of the OFDM that comprises in the carrier information of described first carrier, and be described The cell ID that comprises in the configuration information for described first carrier, described N _CPThe Cyclic Prefix that comprises in the configuration information for described first carrier (CP) type.

Further, also comprise:

Described subscriber equipment uses the initial value c of described CSI-RS _Init, according to the channel condition information measurement pilot frequency of the index calculation first carrier of the timeslot number of first carrier and OFDM symbol Described $r_{l,n_s}\left(m\right)=\frac{1}{\sqrt{2}}(1-2\·c\left(2m\right))+j\frac{1}{\sqrt{2}}(1-2\·c(2m+1)),$ $m=\mathrm{0,1},...,N_{\mathrm{RB}}^{\max ,\mathrm{DL}}-1,$ Wherein, c is for generating the sequence of CSI-RS, and the initial value of c is c _Init,

Resource Block (RB) quantity for described first carrier.

Further, the CSI-RS that receives and the CSI-RS that calculates are compared, confirm whether synchronous whether described first carrier and second carrier wave and subscriber equipment and first carrier synchronous, comprising:

Described CSI-RS that receives and the described CSI-RS that calculates are carried out correlation operation, if the CSI-RS that receives and the degree of correlation of the described CSI-RS that calculates satisfy the thresholding of setting, think that then the CSI-RS that receives is identical with the CSI-RS that calculates, confirm the first carrier and second carrier synchronization, and subscriber equipment and first carrier are synchronous.

Further, the CSI-RS that receives and the CSI-RS that calculates are compared, confirm whether synchronous whether described first carrier and second carrier wave and subscriber equipment and first carrier synchronous, comprising:

If the CSI-RS that receives is identical with the described CSI-RS that calculates, then confirm the first carrier and second carrier synchronization, and subscriber equipment and first carrier are synchronous.

Further, also comprise:

Described subscriber equipment is preserved the total data of the described CSI-RS place subframe that receives, when the described CSI-RS that receives and the described CSI-RS that calculates are inequality, from the data of the CSI-RS place subframe that receives of being preserved, be the time point that benchmark is adjusted intercepting CSI-RS forward or backward with the described CSI-RS that receives, heavily intercept CSI-RS, and will heavily intercept the CSI-RS and the described CSI-RS that calculates that obtain and compare, when heavily the CSI-RS that obtains of intercepting is identical with the described CSI-RS that calculates, according to the time point of the intercepting CSI-RS that adjusts, confirm the time difference between the described first carrier and second carrier wave.

Further, also comprise:

The time difference of described subscriber equipment between described first carrier and described second carrier wave confirmed described first carrier and described second carrier synchronization during less than the time gate limit value, and subscriber equipment and first carrier are synchronous; If the time difference between described first carrier and described second carrier wave exceeds described time gate limit value, confirm that then described first carrier is asynchronous with described second carrier wave, and subscriber equipment is asynchronous with first carrier.

Further, also comprise:

Described subscriber equipment confirm described first carrier and second carrier wave whether synchronously after, whether synchronous result feeds back to the base station by affirmation (ACK), non-affirmation (NACK) or RRM (RRM) measurement report with described first carrier and second carrier wave.

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

Further, subscriber equipment is determined to comprise the carrier information of first carrier according to the carrier information of second carrier wave:

Subscriber equipment thinks that first carrier and second carrier wave are synchronous in time, and frame number, subframe numbers, timeslot number in the carrier information of acquiescence first carrier and the carrier information of second carrier wave are identical with the value of the index of OFDM symbol.

Further, the device that a kind of detected carrier is synchronous comprises: carrier information determining unit, channel condition information measurement pilot frequency (CSI-RS) computing unit, CSI-RS receiving element and comparing unit, wherein:

Described carrier information determining unit is used for determining according to the carrier information of second carrier wave carrier information of first carrier;

Described CSI-RS computing unit is used for the carrier information according to the definite first carrier of described carrier information determining unit, calculates the CSI-RS of described first carrier;

Described CSI-RS receiving element is used for receiving CSI-RS according to the carrier information of described first carrier from described first carrier;

Described comparing unit, be used for the CSI-RS that CSI-RS that described CSI-RS receiving element is received and described CSI-RS computing unit calculate and compare, confirm the described first carrier and second carrier wave whether synchronously and subscriber equipment and first carrier whether synchronous.

Further, described carrier information comprises: the index of frame number, subframe numbers, timeslot number and OFDM (OFDM) symbol.

Further, described CSI-RS receiving element, specifically be used for determining the position of CSI-RS in information according to the CSI-RS configuration information that receives in advance, from information, obtain CSI-RS according to the carrier information of described first carrier from described first carrier reception information.

Further, described CSI-RS computing unit specifically is used for calculating according to the carrier information of the configuration information of the described first carrier that receives in advance and described first carrier the initial value c of the CSI-RS of described first carrier _Init, described $c_{\mathrm{init}}=2^{10}\·(7\·(n_s+1)+l+1)\·(2\·N_{\mathrm{ID}}^{\mathrm{cell}}+1)+2\·N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CP}},$ Wherein, described n _sThe timeslot number that comprises in the carrier information for described first carrier, described l are the index of the OFDM that comprises in the carrier information of described first carrier, and be described

The cell ID that comprises in the configuration information for described first carrier, described N _CPThe Cyclic Prefix that comprises in the configuration information for described first carrier (CP) type.

Further, described CSI-RS computing unit also is used to use the initial value c of described CSI-RS _Init, according to the channel condition information measurement pilot frequency of the index calculation first carrier of the timeslot number of first carrier and OFDM symbol

Described $r_{l,n_s}\left(m\right)=\frac{1}{\sqrt{2}}(1-2\·c\left(2m\right))+j\frac{1}{\sqrt{2}}(1-2\·c(2m+1)),$ $m=\mathrm{0,1},...,N_{\mathrm{RB}}^{\max ,\mathrm{DL}}-1,$ Wherein, c is for generating the sequence of CSI-RS, and the initial value of c is c _Init, Resource Block (RB) quantity for described first carrier.

Further, described comparing unit, if it is identical with the CSI-RS that described CSI-RS computing unit calculates specifically to be used for the CSI-RS that described CSI-RS receiving element receives, then confirm the first carrier and second carrier synchronization, and subscriber equipment and first carrier are synchronous.

Further, described CSI-RS receiving element also is used to preserve the total data of the described CSI-RS place subframe that receives;

Described comparing unit, also be used for when the described CSI-RS that receives and the described CSI-RS that calculates are inequality, be the time point that benchmark is adjusted intercepting CSI-RS forward or backward with the described CSI-RS that receives the data of the CSI-RS place subframe that receives of preserving from described CSI-RS receiving element, heavily intercept CSI-RS, and will heavily intercept the CSI-RS and the described CSI-RS that calculates that obtain and compare, when heavily the CSI-RS that obtains of intercepting is identical with the described CSI-RS that calculates, according to the time point of the intercepting CSI-RS that adjusts, confirm the time difference between the described first carrier and second carrier wave.

Further, described comparing unit also is used for time difference between described first carrier and described second carrier wave during less than the time gate limit value, confirms described first carrier and described second carrier synchronization; If the time difference between described first carrier and described second carrier wave exceeds described time gate limit value, confirm that then described first carrier is asynchronous with described second carrier wave.

In sum, the invention provides and a kind ofly verify the scheme that new carrier wave and backward compatibility carrier wave be whether synchronous from the UE side, guaranteed that the base station is that UE configuration is when using new carrier wave, and be operated in the backward compatibility carrier wave, UE can judge whether the backward compatibility carrier wave is synchronous with new carrier wave, thereby direct base station is for the carrier dispatching of UE.

Description of drawings

Fig. 1 is the flow chart of transmission of Information method among the present invention;

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

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

Fig. 4 is the Organization Chart of transmission of Information device among the present invention.

Embodiment

In the present embodiment, the base station is that information configuration is carried out in the operation of first carrier (the new carrier wave among the LTE), and the configuration information of new carrier wave is transferred to UE, to support the work of UE in new carrier wave.Give simultaneously in having the system of new carrier wave, when the base station is the new carrier wave of UE configuration use, the base station is by notifying UE with second carrier wave (backward compatibility carrier wave) of new carrier wave pairing, CSI-RS (channel status indication reference signal) configuration information in the new carrier wave, UE is according to the carrier information of CSI-RS configuration information and new carrier wave, in new carrier wave, receive CSI-RS, and calculate CSI-RS according to the configuration information of the carrier information of new carrier wave and the new carrier wave that receives in advance, if the CSI-RS that receives is identical with the CSI-RS that calculates, UE thinks that then the backward compatibility carrier wave of new carrier wave and pairing is a sync carrier so, and subscriber equipment and new carrier synchronization.The carrier information of new carrier wave is the backward compatibility carrier synchronization that UE supposes new carrier wave and pairing, carrier information according to the backward compatibility carrier wave, be defined as the carrier information of new carrier wave identical with the carrier information of backward compatibility carrier wave, that is: the backward compatibility carrier wave of new carrier wave and pairing is synchronous in time, and frame number, subframe numbers, the timeslot number given tacit consent in the carrier information of backward compatibility carrier wave of the carrier information of new carrier wave and pairing are identical with the value of the index of OFDM symbol.

Present embodiment also provides a kind of transmission of Information method, is used for UE and the transmission of the reference signal of carrier synchronization newly.The base station is the reference signal that the configuration of new carrier wave is used for synchronously/follows the tracks of synchronously, and controls (RRC) message by the Radio Resource of backward compatibility carrier wave the configuration information of reference signal is sent to UE.The configuration information of reference signal comprises: resource information, cycle information and the bandwidth information etc. that send reference signal.If UE receives the configuration information of the reference signal that is used for synchronously/follows the tracks of synchronously, then use reference signal to carry out and the tracking synchronously/synchronously of carrier wave newly, rather than obtain and the tracking synchronously/synchronously of carrier wave newly aliging of time/frequency with the backward compatibility carrier wave of pairing by new carrier wave.

Above-mentioned reference signal can be CSI-RS, cell reference signals (CRS) or decoding demodulated reference signal (DM-RS).Be that example describes below with CSI-RS.When reference signal adopted CSI-RS, the configuration information of reference signal was the CSI-RS configuration information.

By RRC message is that UE sends the CSI-RS configuration information that is used for new carrier synchronization/synchronous tracking, can distinguish the RRC message of UE private type and the RRC message of broadcast type, the preferred RRC message that adopts the UE special use in the present embodiment, because for the UE that in new carrier wave, works, following the tracks of synchronously/synchronously of not all UE all has problems, and the base station can be chosen as its configuration according to the demand of UE and be used for synchronously/the synchronous CSI-RS that follows the tracks of.

For example, knowing UE and new carrier wave when the base station can not be synchronous/when following the tracks of synchronously, as the backward compatibility carrier wave in new carrier wave of UE side and pairing is not strict time unifying, UE can't by the backward compatibility carrier wave finish with new carrier wave synchronously/when following the tracks of synchronously, the base station can be used for synchronously/synchronous reference signal of following the tracks of for this UE configuration, as CSI-RS, the configuration information of reference signal is sent to UE by the UE special RRC message.UE utilize the base station be the CSI-RS that is used for synchronously/follows the tracks of synchronously of its configuration finish with new carrier wave synchronously/follow the tracks of synchronously.

As shown in Figure 1, the another kind of transmission of Information method that present embodiment provides comprises:

Step 101: the base station is configured the carrier wave among the LTE;

Step 102: the base station sends to UE with the configuration information of carrier wave, and the configuration information of carrier wave comprises one or more in the bandwidth of carrier wave, sub-district ID, CP type, CSI-RS configuration information and the downlink transfer pattern.

The configuration information of carrier wave all can send to UE by switching command, measuring command, the proprietary order of UE or system broadcast message.

Below this transmission of Information method is elaborated.

The configuration information of above-mentioned new carrier wave comprises: the access frequency point of carrier wave and bandwidth, these information can be transmitted in system information block (SIB) as the system information of the backward compatibility carrier wave that matches, consider that different SIB comprises the different of the information content and function, among the SIB3 or SIB4 that the access frequency point and the bandwidth of new carrier wave can be placed on the backward compatibility carrier wave after taking all factors into consideration, and need in SIB3 or SIB4, indicate access frequency point and bandwidth that the access frequency point that carries and bandwidth are new carrier wave especially, to distinguish the mode of existing sign carrier wave, if not identifying is access channel and the bandwidth that belongs to new carrier wave, UE can insert as the carrier wave of routine so, but, can cause UE can't insert this new carrier wave owing to do not have PSS/SSS in the new carrier wave.Sign belongs to new carrier wave, and what can make that UE knows this frequency and bandwidth correspondence exactly is new carrier wave, and UE just can handle according to the mode of new carrier wave.Perhaps,

The base station preferably sends to UE by switching command or measuring command with above-mentioned frequency and bandwidth, also can send to UE by proprietary order of UE or system broadcast message.

The base station can be carried at above-mentioned frequency and bandwidth to be connected and reshuffle (RRCConnectionReconfiguration) message and send to UE, also can in measuring configuration (measConfig) message, dispose the frequency and the bandwidth of new carrier wave, similarly, also need additionally increase indication in message is new carrier wave with the type of indicating carrier wave.Perhaps,

Consider the bandwidth and the frequency point information that all need to dispose new carrier wave in the more message, so introduce this information in other information easily for the ease of being implemented in, also can an independently information unit structure be set, so that different message is directly quoted this information unit structure for the configuration information of new carrier wave.The information unit structure of new carrier wave comprises: carrier type information, frequency and bandwidth, optionally can also increase the information of the backward compatibility carrier wave that matches with new carrier wave, carrier type information is to indicate that information in the information unit structure is for the carrier wave configuration of that type, can be used as the option parameter.The information of the backward compatibility carrier wave of pairing can imply the carrier wave for the information unit structure that sends this new carrier wave, for example, if do not comprise the information of the backward compatibility carrier wave of pairing in the information unit structure of new carrier wave, then be defaulted as the backward compatibility carrier wave of carrier wave that sends this information unit structure for matching, if comprise the information of the backward compatibility carrier wave of pairing in the information unit structure of new carrier wave, so then represent the pairing of new carrier wave and this backward compatibility carrier wave, can in other message, directly dispose the configuration information of new carrier wave so easily.

In the present embodiment, the collocation method of sub-district ID in the new carrier wave also is provided, acquiescence is used and the identical sub-district ID of backward compatibility carrier wave that matches in the new carrier wave, can save the step of the sub-district ID of the new carrier wave of notice UE like this, also can save complex process into new carrier wave configuration actual physical sub-district ID.For UE, use new carrier wave if be scheduled, can not carry out the RRC establishment of connection again and in processes such as registers kernel network access informations.Perhaps,

New carrier wave uses virtual subdistrict ID, the value of virtual subdistrict ID still needs the base station to pass through backward compatibility carrier wave notice UE, the mode of notice can have certain difference also can be identical with the advice method of the frequency of above-mentioned new carrier wave and bandwidth, virtual subdistrict ID generally need adopt the mode of point-to-point to notify, for example, use above-mentioned RRCConnectionReconfiguration message to adopt point to point system notice UE.Virtual subdistrict ID also can save the process in the core-network side registration, therefore, if be that new carrier wave uses virtual subdistrict ID, in the information unit structure of so above-mentioned new carrier wave, need add this parameter of virtual subdistrict ID that new carrier wave uses again.Perhaps, new carrier wave uses actual physical sub-district ID, and the notice of actual physical sub-district ID is identical with virtual subdistrict ID, for the information unit structure of new carrier wave, increases this parameter of sub-district ID that new carrier wave uses.

When new carrier wave uses virtual subdistrict ID, new carrier wave can be good at being used to cooperative multipoint transmission (COMP, Coordinated Multi-Point) scene, under this scene, use, can be the new carrier wave virtual subdistrict ID of flexible configuration as required by the base station, and in conjunction with not having Physical Downlink Control Channel (PDCCH in the new carrier wave, Physical downlink control channel), the monopolizing characteristic of CRS and PSS/SSS, make presence of intercell interference under the COMP obtain good coordination and avoid.

The virtual subdistrict ID of new carrier wave can be determined by the physical I D of base station according to the backward compatibility carrier wave that participates in cooperation, because the physical I D of virtual subdistrict ID and backward compatibility carrier wave is with the parameter that generates other information in the carrier wave, under the identical situation of parameter, the parameter of other that generate will be identical, CSI-RS etc. for example, will bring like this in two carrier waves non-orthogonal between the CSI-RS, thereby produce to disturb.As long as so the decision of virtual subdistrict ID can be evaded the follow-up interference that produces when calculating other information by sub-district ID.

Preferably, virtual subdistrict ID in the new carrier wave produces and disposes for the UE that needs by the UE dedicated signaling, different with existing physical district ID, the latter is for UE configurations all in the sub-district, so the latter will be subjected to bigger restriction, for example, a carrier wave can only dispose a physical district ID, and whether distribution that need to consider to be adjacent physical district ID between the sub-district is reasonable, for example, and orthogonality.And the configuration of the virtual subdistrict ID in the new carrier wave is not subjected to the constraint of the restrictive condition of original physical district ID, for example, the base station can be the virtual subdistrict ID of each self-configuring of two UE in the new carrier wave, and get final product by UE dedicated signaling notice UE respectively, can evade the interference in the COMP scene so significantly.Obviously, new carrier wave has been deleted PDCCH, CRS and PSS/SSS owing to simplified configuration, again in conjunction with the use of the virtual subdistrict ID in the present embodiment, makes new carrier performance be embodied fully in the COMP scene.

The base station can be identical virtual subdistrict ID of a plurality of UE configurations in the new carrier wave.

The base station is after a new carrier wave is determined virtual subdistrict ID, and the base station generates scrambler sequence according to virtual subdistrict ID, carries out uplink reference signals UL-RS sequence of packets, carries out processing such as carrying out frequency hopping Hopping.

Present embodiment also provides the configuration and the advice method of Cyclic Prefix in the new carrier wave (CP) type, preferably, the CP type identical with the backward compatibility carrier wave used in the base station in new carrier wave, be that the backward compatibility carrier wave uses long CP or short CP, then Pei Dui new carrier wave is also corresponding uses long CP or short CP, and this mode is solidified.When UE is in the backward compatibility carrier wave, just can directly know the CP type in the new carrier wave.UE need determine the CP type of this carrier wave in the prior art by retrieval PSS/SSS in a certain carrier wave, this mainly is because UE is when inserting this carrier wave, earlier the PSS/SSS of this carrier wave of retrieval with this carrier synchronization, just obtain the CP type in retrieval in the PSS/SSS in the prior art, otherwise can't finish the synchronizing process with this carrier wave.But in new carrier wave, because new carrier wave does not dispose PSS/SSS, so UE can't adopt the mode of existing retrieval PSS/SSS to obtain the CP type of new carrier wave, consider again and need arrive the UE that works in the new carrier wave, inevitable earlier with the backward compatibility carrier wave of new carrier wave pairing in work, so UE is a CP type of knowing the backward compatibility carrier wave earlier, if use identical CP with pairing backward compatibility carrier wave so stipulate new carrier wave, UE just can be known the CP type of new carrier wave before entering new carrier wave work so, so just can save the signaling of notice CP, avoid the complex process of UE retrieval PSS/SSS.Perhaps,

The CP type of new carrier wave disposes arbitrarily, and this moment so, CP type in the new carrier wave of UE is notified by signaling in the base station.Preferably, the base station is when using new carrier wave for UE configuration, and UE is notified, the CP type of using in the new carrier wave by the RRC message in the backward compatibility carrier wave or switching command or measuring command or system broadcast message in the base station.Concrete can using RRC to reshuffle (RRCConnectionReconfiguration) or dispose in (measConfig) in the pairing notification message of the pairing of notifying the pairing of new carrier wave and backward compatibility carrier wave or in measurement sends to UE.To use the CP type be configurable if be defined as new carrier wave, so in the above-mentioned new carrier information unit, need increase the parameter of the CP type that new carrier wave uses again.

This mode can be so that newly the CP type of carrier wave be formulated according to the needs of new carrier wave, for example, when needing big the covering, the base station can be the long CP of new carrier wave configuration, reaching better effect, can't reach such flexibility and aforementioned CP type with new carrier wave is identical with the configuration of backward compatibility carrier wave.Perhaps,

Adopt a kind of mode of dynamic-configuration CP type, be that the base station is that UE is when sending the order of the CP type notify new carrier wave, then the type of new carrier wave is determined in order as per advice, if the base station does not send described order, base station and UE give tacit consent to new carrier wave and use and the identical CP type of backward compatibility carrier wave of matching so.This moment is for the information unit structure of above-mentioned new carrier wave, need make some regulations for described CP type parameter, promptly when not having the CP type parameter in the information unit structure, the base station is all given tacit consent to new carrier wave with UE and is used and the identical CP of pairing backward compatibility carrier wave, when if this CP type parameter is arranged, base station and UE carry out according to the CP type of parameter configuration and get final product.

The access frequency point of above-mentioned new carrier wave, bandwidth, sub-district ID, CP type and CSI-RS configuration information can be selected suitable message bearing according to different application scenarioss.For example, in cell switch process, in order to reduce the interaction times of base station and UE, can send in the base station and add above-mentioned information in the switching command of UE or the measuring command and give UE, so that UE measures target carrier.Here be with the different of prior art, after can not directly inserting target carrier by UE, sub-district ID, CP type and the CSI-RS of new carrier wave obtain, and in switching of the sub-district of prior art or the measuring process, the physical district ID of Target cell, CP type and CRS configuration all are oneself to obtain after UE directly inserts Target cell.

The send mode that configuration information of above-mentioned carrier wave is not adopted in the present embodiment limits, the configuration information of carrier wave all can be in switching command, measuring command, the proprietary order of UE and system broadcast message, be carried at RRC message, measure in configuration messages or the pairing notification message and send, can preferably suitable send mode at different scenes.

The base station comprises by the CSI-RS configuration information of the new carrier wave of backward compatibility carrier wave notice UE: antenna port number (antennaPortsCount-r10), CSI-RS resource distribution (resourceConfig-r10), CSI-RS sub-frame configuration (subframeConfig-r10), CSI-RS power control (p-C-r10).The CSI-RS configuration information of new carrier wave is included in the base station in requiring of sending of the UE measuring command that UE measures for new carrier wave, like this when UE obtains base station transmission measuring command, also know the CSI-RS configuration information that needs the carrier wave of measurement, can make things convenient for the measurement of UE.Here mainly consider the complexity of CSI-RS configuration, measure different with available technology adopting CRS, the CRS configuration is fairly simple, so in measuring command, do not provide reference signal in the prior art, owing to measure the purpose difference, the concrete RRC message difference of using, so sub-district of using CSI-RS to measure for needs in the present embodiment, the CSI-RS configuration information all need be added in the base station in sending to the measuring command of UE, so that UE measures, and reduce mutual between base station and the UE.Certainly, can adopt switching command and the proprietary order of UE etc. to send equally.

Present embodiment also provides a kind of detected carrier synchronous method, as shown in Figure 2, comprising:

Step 201:UE according to the carrier information of the backward compatibility carrier wave of new carrier wave pairing, determine under the situation of new carrier wave and backward compatibility carrier synchronization, newly the carrier information of carrier wave;

The timeslot number n of new carrier wave of acquiescence and pairing backward compatibility carrier wave in the present embodiment _sAlign with the OFDM symbol l in the time slot, i.e. the n of new carrier wave _sWith the corresponding n of l with pairing backward compatibility carrier wave _sWith l be strict time alignment.

Step 202:UE receives the configuration information of the carrier wave of base station transmission;

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

The configuration information of the new carrier wave of UE elder generation basis and the carrier information of new carrier wave calculate the initial value c of the CSI-RS of new carrier wave _Init

CSI-RS initial value c _InitComputing formula:

$c_{\mathrm{init}}=2^{10}\·(7\·(n_s+1)+l+1)\·(2\·N_{\mathrm{ID}}^{\mathrm{cell}}+1)+2\·N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CP}},$ Wherein, n _sThe timeslot number that comprises in the carrier information for new carrier wave, l are the index of the OFDM that comprises in the carrier information of new carrier wave,

The cell ID that comprises in the configuration information for new carrier wave, N _CPThe CP type that comprises in the configuration information for new carrier wave.

UE re-uses the initial value c of CSI-RS _Init, according to the channel condition information measurement pilot frequency of the new carrier wave of index calculation of the timeslot number of new carrier wave and OFDM symbol

$r_{l,n_s}\left(m\right)=\frac{1}{\sqrt{2}}(1-2\·c\left(2m\right))+j\frac{1}{\sqrt{2}}(1-2\·c(2m+1)),$ $m=\mathrm{0,1},...,N_{\mathrm{RB}}^{\max ,\mathrm{DL}}-1,$ Wherein, c is for generating the sequence of CSI-RS, and the initial value of c is c _Init, Resource Block (RB) quantity for described first carrier.

The frequency and the bandwidth information of the new carrier wave that step 204:UE sends by the backward compatibility carrier wave according to the base station, and the carrier information of above-mentioned definite new carrier wave are receiving CSI-RS in new carrier wave;

Subscriber equipment is a reception information from first carrier, determines the position of CSI-RS in information according to the CSI-RS configuration information that receives in advance, and the carrier information according to new carrier wave intercepts CSI-RS from information again.

Whether step 205:UE detects the CSI-RS that receives identical with the sequence of calculating by the way, if it is identical, think that then the carrier information of above-mentioned definite new carrier wave is correct in new carrier wave, get final product to such an extent that the backward compatibility carrier wave of make new advances carrier wave and pairing is a strict synchronism, be that frame number, subframe numbers, OFDM symbol all are the strict time alignment, and, subscriber equipment and first carrier are synchronous, like this UE just can by the frame number in the backward compatibility carrier wave, subframe numbers, OFDM symbol keep and safeguard own and new carrier wave synchronously.

Here actual is that two CSI-RS that obtain are carried out related calculation, judge whether identical according to correlation peak, if the CSI-RS that receives satisfies the thresholding of setting with the degree of correlation of the CSI-RS that calculates, think that then the CSI-RS that receives is identical with the described CSI-RS that calculates.

UE can send to the base station with this conclusion information, after this conclusion is learnt in the base station, just can use this new carrier wave for the UE configuration.Certainly, UE also can send to the base station to described conclusion as the reason that RRM measures failure.Certainly, UE also can not feed back described result and give the base station, and UE only gets final product measurement feedback to the base station.

In addition, present embodiment also provides a kind of UE downlink transfer pattern in new carrier wave, is that how the base station allows UE newly work in the carrier wave under the synchronous situation so that UE is known between own and new carrier wave and the backward compatibility carrier wave.

Consider there is multiple transmission mode among the present LTE that at the characteristic of new carrier wave, the transmission mode that present embodiment proposes new carrier wave adopts following mode so:

Described downlink transfer pattern comprises downlink transfer pattern 9, and, (the Downlink Control Information of DCI in the downlink transfer pattern 9, Downlink Control Information) form is DCI Format (form) 1A, the data of Downlink Control Information correspondence are single antenna port transmission mode in the transmission means of PDSCH (Physical Downlink Shared Channel), perhaps, the form of DCI is DCI Format 1A in the downlink transfer pattern 9, and corresponding data is a diversity mode based on customer special reference signal in the transmission means of PDSCH.

Described downlink transfer pattern also comprise following one of at least:

PDSCH only uses the downlink transfer pattern of single antenna port 7 transmission;

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

The descending control information format of above-mentioned two downlink transfer pattern correspondences is DCI Format 1 or DCIFormat 1A; Perhaps, the descending control information format of above-mentioned two downlink transfer pattern correspondences is new DCI Format or DCI Format 1A; Perhaps, the descending control information format of above-mentioned two downlink transfer pattern correspondences is new DCI Fonnat.

Promptly, if UE is set to Cell Radio Network Temporary Identifier/Identity, Cell-RNTI (C-RNTI by high level, Cell RadioNetwork Temporary Identifier) cyclic redundancy check (CRC) (CRC of scrambling, Cyclical RedundancyCheck) carries out Physical Downlink Control Channel (PDCCH, Physical Downlink ControlChannel) decoding, then UE should be according to the respective sets incompatible decoding PDCCH PDSCH relevant with all of table 1 definition in the table 6, wherein, described PDCCH also comprises the PDCCH of enhancing;

Following table 3 downlink transfer pattern x in the table 6 also can only comprise corresponding in a following table DCIFormat;

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

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

Table 1

Table 2

Table 3

Table 4

Table 5

Table 6

Embodiment 1:

Two carrier waves are arranged in a certain system, suppose that one is the carrier wave with backward compatibility character, one is described new carrier wave, does not dispose independently PSS/SSS in the new carrier wave of hypothesis in the present embodiment.

At first, backward compatibility carrier wave and described new carrier wave are matched in the base station, and unpaired message is sent UE in the backward compatibility carrier wave.Because new carrier wave does not support that UE directly inserts, thus all UE all from backward compatibility carrier wave connecting system, the configuration schedules of carrier wave is carried out in the base station to UE then.For example use new carrier wave for some UE configurations.

Concrete, the base station sends to UE with the information of backward compatibility carrier wave and described new carrier wave pairing, makes UE know, and backward compatibility carrier wave and which new carrier wave are that relation is used in pairing.The base station sends to UE with some common signal channels in the new carrier wave, important system information by the backward compatibility carrier wave that matches, and makes UE know the relevant configuration in the new carrier wave.The new carrier wave of configuration uses identical sub-district ID with the backward compatibility carrier wave in the present embodiment, and new carrier wave uses the CP type identical with backward compatibility, but considers the applicable cases of CSI-RS, so new carrier wave uses short CP.So just can save information and the CP type information of the sub-district ID of the new carrier wave use of base station notice UE.For example in the present embodiment, the base station needs the CSI-RS configuration information in the new carrier wave is sent to UE at least, and described configuration information is: antenna port number (antennaPortsCount-r10), CSI-RS resource distribution (resourceConfig-r10), CSI-RS sub-frame configuration (subframeConfig-r10), CSI-RS power control (p-C-r10).

Base station side is when using new carrier wave, the requirement that need send according to the carrier aggregation of existing protocol regulation is carried out, for example the base station need guarantee that two carrier waves of polymerization are no more than the maximum (specifically referring to LTE TS36.104) of agreement regulation in the time difference that base station side sends, like this, two carrier waves are strict synchronism when base station side sends.Right latter two carrier wave is by the transmission of eating dishes without rice or wine, because the frequency characteristic of carrier wave, the mobility of UE and the transmission node of experience, may cause two carrier waves when arriving UE, strict synchronism between the carrier wave is destroyed, but because the base station is not known when backward compatibility carrier wave and new carrier wave arrive the UE side, whether also keeping the synchronous of strictness, so, according to present embodiment, further, when if new carrier transmission data need be used for UE in the base station, at first the base station requires UE to measure for new carrier wave and (is meant mainly that here RRM measures, the base station judges according to measurement result whether new carrier wave is fit to activate for UE), because knowing self and new carrier wave, UE whether do not keep the synchronous of strictness so, because not PSS/SSS configuration in the new carrier wave, so receive the new carrier wave measurement of base station requirement at UE after, UE handles according to following mode:

Receive the order of the new carrier wave measurement of base station requirement execution as UE after, the UE side gives tacit consent to new carrier wave and the backward compatibility carrier wave is a strict synchronism, think that new carrier wave and backward compatibility carrier wave are strict alignment at time orientation, because UE is the index of frame number, timeslot number, subframe numbers and the OFDM symbol that can know the backward compatibility carrier wave, so that UE gives tacit consent to the index and the backward compatibility carrier wave of frame number, timeslot number, subframe numbers and OFDM symbol of new carrier wave correspondence is in full accord.Whether so UE has determined that by the backward compatibility carrier wave index value of frame number, timeslot number, subframe numbers and the OFDM symbol of new carrier wave receives the CSI-RS in the new carrier wave, it is identical with the CSI-RS that calculates by concrete CSI-RS configuration information to detect the CSI-RS data that receive then:

If it is identical, think that then aforesaid hypothesis UE side supposes that new carrier wave and backward compatibility carrier wave are that the conclusion that strict time is alignd is set up, this moment, UE thought that then new carrier wave and backward compatibility carrier wave are strict synchronism, it is the frame number of new carrier wave, timeslot number, the index of subframe numbers and OFDM symbol aligns with the backward compatibility carrier wave, UE is by determining the frame number in the phase compatible carrier wave of back, timeslot number, just can obtain the frame number in the corresponding new carrier wave behind the index of subframe numbers and OFDM symbol, timeslot number, the index of subframe numbers and OFDM symbol, thus realize that UE provides the basis for UE works in new carrier wave.UE will detect the new carrier wave obtain and the conclusion that the backward compatibility carrier wave is strict synchronism in the UE side and feed back to the base station, and the base station can determine whether be the new carrier wave of UE configuration use after obtaining conclusion.Like this, new carrier wave is used for this UE configuration in the base station.

If different, then to obtain new carrier wave are the conclusions that do not have strict synchronism with backward compatibility carrier wave two carrier waves when arriving the UE side to UE so, and UE feeds back to the base station with this conclusion, and whether the base station can be the new carrier wave of UE configuration use according to this conclusion decision.Like this, new carrier wave will not used for this UE configuration in the base station.

Whether synchronous above-mentioned UE judge the conclusion of new carrier wave and pairing backward compatibility carrier wave, and UE can imply feedback by ACK/NACK, also can carry by the message of RRM measurement report to feed back to the base station.

Embodiment 2:

This embodiment is identical with embodiment 1 substantially, difference is, if the CSI-RS of UE by new carrier wave judges when the carrier wave that makes new advances is asynchronous with the backward compatibility carrier wave, further UE need do further calculating according to CSI-RS, to determine concrete time difference value between new carrier wave and the backward compatibility carrier wave.

Two carrier waves are arranged in a certain system, suppose that one is the carrier wave with backward compatibility character, one is described new carrier wave, does not dispose independently PSS/SSS in the new carrier wave of hypothesis in the present embodiment.

At first, backward compatibility carrier wave and described new carrier wave are matched in the base station, and unpaired message is sent UE in the backward compatibility carrier wave.Because new carrier wave does not support that UE directly inserts, thus all UE all from backward compatibility carrier wave connecting system, the configuration schedules of carrier wave is carried out in the base station to UE then.For example use new carrier wave for some UE configurations.

Concrete, the base station sends to UE with the information of backward compatibility carrier wave and described new carrier wave pairing, makes UE know, and backward compatibility carrier wave and which new carrier wave are that relation is used in pairing.The base station sends to UE with some common signal channels in the new carrier wave, important system information by the backward compatibility of matching, and makes UE know the relevant configuration in the new carrier wave.For example among the present invention, the base station needs the CSI-RS configuration information in the new carrier wave is sent to UE at least, described configuration information is: antenna port number (antennaPortsCount-r10), CSI-RS resource distribution (resourceConfig-r10), CSI-RS sub-frame configuration (subframeConfig-r10), CSI-RS power control (p-C-r10), the sub-district ID that uses in the new carrier wave, the CP type of using in the new carrier wave.For the CP type of new carrier wave, should be consistent in the present embodiment CP type of the carrier wave that makes new advances with the CP type of backward compatibility carrier wave.Help carrying out between new carrier wave and the pairing backward compatibility carrier wave strict time unifying like this.

Base station side is when using new carrier wave, the requirement that need send according to the carrier aggregation of existing protocol regulation is carried out, for example the base station need guarantee that two carrier waves of polymerization are no more than the maximum (specifically referring to LTE TS36.104) of agreement regulation in the time difference that base station side sends, like this, two carrier waves are strict synchronism when base station side sends.Right latter two carrier wave is by the transmission of eating dishes without rice or wine, because the frequency characteristic of carrier wave, the mobility of UE and the transmission node of experience, may cause two carrier waves when arriving UE, strict synchronism between the carrier wave is destroyed, but because the base station is not known when backward compatibility carrier wave and new carrier wave arrive the UE side, whether also keeping the synchronous of strictness, so, according to present embodiment, further, when if new carrier transmission data need be used for UE in the base station, at first the base station requires UE to measure for new carrier wave and (is meant mainly that here RRM measures, the base station judges according to measurement result whether new carrier wave is fit to activate for UE), so owing to UE does not know whether own and new carrier wave keeps the synchronous of strictness, because there is not the PSS/SSS configuration in the new carrier wave again, so receive the new carrier wave measurement of base station requirement at UE after, UE handles according to following mode:

Receive the order of the new carrier wave measurement of base station requirement execution as UE after, the UE side gives tacit consent to new carrier wave and the backward compatibility carrier wave is a strict synchronism, think that new carrier wave and backward compatibility carrier wave are strict alignment at time orientation, because UE is the index of the frame number of knowing the backward compatibility carrier wave, timeslot number, subframe numbers, OFDM symbol, so UE gives tacit consent to frame number, timeslot number, the subframe numbers of new carrier wave correspondence, the index and the backward compatibility carrier wave of OFDM symbol is on all four.So UE has determined frame number, timeslot number, the subframe numbers of new carrier wave, the index of OFDM symbol by the backward compatibility carrier wave, whether receive the CSI-RS in the new carrier wave, it is identical with the CSI-RS that calculates by concrete CSI-RS configuration information to detect the CSI-RS that receives then:

If it is identical, think that then aforesaid hypothesis UE side supposes that new carrier wave and backward compatibility carrier wave are that the conclusion that strict time is alignd is set up, this moment, UE thought that then new carrier wave and backward compatibility carrier wave are strict synchronism, it is the frame of new carrier wave, time slot, subframe, the index of OFDM symbol aligns with the backward compatibility carrier wave, UE is by determining the frame number in the phase compatible carrier wave of back, timeslot number, subframe numbers, just can obtain the frame number in the corresponding new carrier wave behind the index of OFDM symbol, timeslot number, subframe numbers, the index of OFDM symbol, thus realize that UE provides the basis for UE works in new carrier wave.UE will detect the new carrier wave obtain and the conclusion that the backward compatibility carrier wave is strict synchronism in the UE side and feed back to the base station, and the base station can determine whether be the new carrier wave of UE configuration use after obtaining conclusion.Like this, new carrier wave is used for this UE configuration in the base station.

If different, the UE side can further be determined the in esse time difference between new carrier wave and the backward compatibility carrier wave by CSI-RS.Concrete, before the CSI-RS of UE in the new carrier wave that detection receives, the data of the new carrier wave that receives should be preserved, when UE obtains the nonsynchronous situation of new carrier wave and backward compatibility carrier wave and takes place, UE continues from the data of preserving, with the described CSI-RS that receives is the time point that benchmark is adjusted intercepting CSI-RS forward or backward, heavily intercept CSI-RS, the possible CSI-RS of (being progressively to verify at this moment) intercepting according to the sampling point of time orientation, compare checking with the CSI-RS that calculates by known parameters, thereby the real time that can make new advances between carrier wave and the backward compatibility carrier wave is poor.(for example do not influence the interval of ACK/NACK feedback when this time difference is smaller, for example be no more than a 1ms or 0.5 ms again, such value can not influence the interval of above-mentioned feedback) time, UE can think that still the new carrier wave of UE side and backward compatibility carrier wave are synchronous.If the above-mentioned time difference is bigger, UE can think that the new carrier wave of UE side and backward compatibility carrier wave are nonsynchronous so.

Here actually provide a described time difference, in the UE side, as long as to be no more than the regular hour poor for synchronization time difference between new carrier wave and the pairing backward compatibility carrier wave, and this time difference, UE is known, the UE side just can think that the backward compatibility carrier wave of new carrier wave and pairing is synchronous so, is UE when using new carrier wave like this in the base station, and UE can adjust according to the time difference voluntarily and receive the data of resolving new carrier wave.

Whether synchronous above-mentioned UE judge the conclusion of new carrier wave and pairing backward compatibility carrier wave, and UE can imply feedback by ACK/NACK, also can carry by the message of RRM measurement report to feed back to the base station.

Embodiment 3:

This embodiment and embodiment 1,2 are different, and emphasis is described the configuration and the process of transmitting of information of necessity of new carrier wave among the embodiment 3, so that UE can obtain these information timely.

2 carrier waves are arranged in a certain system, suppose that one is the carrier wave with backward compatibility character, one is described new carrier wave, does not dispose independently PSS/SSS in the new carrier wave of hypothesis in the present embodiment.

For the UE that inserts the backward compatibility carrier wave, new carrier wave might be used for its configuration in the base station.If the base station plan is used the backward compatibility carrier wave for a certain UE configuration according to the present invention, the base station need send the necessary information of new carrier wave for UE so, this moment, the base station was by comprising the information unit structure of new carrier wave in RRCConnectionReconfiguration message, and gave value for the parameter in this structure.Provide a kind of value configuration of this structure below.

New carrier information cellular construction:

Frequency

Bandwidth

Sub-district ID

The CP type

}

After base station and UE sent and receive this structure, it was new carrier type that the title that is interpreted as " information unit structure " body embodies this structure.And the carrier wave that sends this structure can be regarded as with structure in the carrier wave described have pair relationhip.Frequency, bandwidth, sub-district ID and CP type all are new carrier waves in the description scheme body.Sub-district ID can be further divided into actual physical sub-district ID, or virtual sub-district ID.Virtual sub-district ID is used for just determining some parameters in the new carrier wave that these parameters need to use sub-district ID in calculating, just use virtual sub-district ID numerical value to calculate here.UE does not need to set up independently RRC connection at the carrier wave of virtual subdistrict ID correspondence.

Under the situation for a backward compatibility carrier wave and a plurality of new carrier wave pairings, need to comprise the information of a plurality of new carrier waves in the structure, the information of each new carrier wave can be formed corresponding signaling according to the structure that provides previously, is included in the same structure.Suppose that new carrier wave uses and the identical sub-district ID of pairing backward compatibility carrier wave, for a backward compatibility carrier wave and 2 new carrier waves match the time, described structure is as shown below:

New carrier information cellular construction:

Frequency

Bandwidth

The CP type

Frequency

Bandwidth

The CP type

……

}

Embodiment 4:

The embodiment 4 main base stations of describing are the reference signal that the UE configuration is used for synchronously/follows the tracks of synchronously, and the reference signal here mainly is meant CSI-RS.This main and CSI-RS can carry out list and overlap separate configurations relation is arranged.

Can be used in combination with embodiment 1 and embodiment 2, on the basis of embodiment 1 and embodiment 2, confirm can not be by pairing backward compatibility carrier wave and new carrier synchronization/when following the tracks of synchronously as UE, and the base station is after knowing above-mentioned situation, the base station can be the UE CSI-RS that configuration is used for synchronously/follows the tracks of synchronously in new carrier wave by the RRC message of UE special use, the CSI-RS configuration information is sent to UE as the configuration information of reference signal, UE utilizes described CSI-RS to finish and the tracking synchronously/synchronously of carrier wave newly then, to guarantee that UE is in the work of carrier wave newly.

Perhaps, the base station is used for the synchronous tracking of UE and this new carrier wave for the specific CSI-RS pattern of configuration in the new carrier wave.In this case after UE inserts new carrier wave, the CSI-RS that is used for following the tracks of synchronously that finds base station configuration exists, UE just uses described CSI-RS to do synchronous tracking so, otherwise UE uses the reference signal in the backward compatibility carrier wave that matches with new carrier wave to do the synchronous tracking of new carrier wave.

The base station sends described specific CSI-RS configuration information can send to UE by system information (for example SIB) or special-purpose RRC message.

The base station is measured by allowing UE carry out for new carrier wave, directly determine whether to be used for synchronously/the synchronous CSI-RS that follows the tracks of according to the measurement result base station for the UE configuration, when UE received the base station for the configuration information of the reference signal that is used for new carrier synchronization/follow the tracks of synchronously of own configuration by special RRC message, UE then used the CSI-RS of described configuration to carry out tracking synchronously/synchronously with new carrier wave so.If the CSI-RS configuration information that UE does not receive above-mentioned being used for synchronously/follows the tracks of synchronously by special RRC message, so the UE mode of then using new carrier wave to align with the strictness of pairing backward compatibility subcarrier time determine new carrier wave synchronously/synchronous tracking.

UE can by the base station whether be oneself configuration be used for new carrier wave synchronously/reference signal of following the tracks of synchronously judges new carrier wave and the synchronous situation of matching between the backward compatibility carrier wave, for example receive the base station when sending the CSI-RS configuration information that is used in the new carrier wave synchronously/follows the tracks of synchronously for it as UE, UE thinks that then between the backward compatibility carrier wave of for own new carrier wave and pairing be not strict synchronism, oneself need the CSI-RS of the described configuration of use to finish and the tracking synchronously/synchronously of carrier wave newly, otherwise UE thinks that new carrier wave is a strict synchronism with matching between the backward compatibility carrier wave for own.

Be not dispose PSS/SSS in the new carrier wave as herein described, also do not have CRS.If dispose own PSS/SSS UE then directly use the PSS/SSS in the new carrier wave to carry out synchronously so in the new carrier wave with new carrier wave.

As shown in Figure 3, present embodiment also provides a kind of detected carrier synchronous device, comprising: carrier information determining unit, CSI-RS computing unit, CSI-RS receiving element and comparing unit, wherein:

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

The CSI-RS computing unit is used for the carrier information according to the definite first carrier of carrier information determining unit, calculates the CSI-RS of first carrier;

The CSI-RS receiving element is used for receiving CSI-RS according to the carrier information of first carrier from first carrier;

Comparing unit is used for the CSI-RS that CSI-RS that the CSI-RS receiving element is received and CSI-RS computing unit calculate and compares, determine the first carrier and second carrier wave whether synchronously and subscriber equipment and first carrier whether synchronous.

Comparing unit is identical with the CSI-RS that described CSI-RS computing unit calculates at the CSI-RS that described CSI-RS receiving element receives, and then confirms the first carrier and second carrier synchronization, and subscriber equipment and first carrier are synchronous.

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

The CSI-RS receiving element specifically is used for determining the position of CSI-RS in information from first carrier reception information according to the CSI-RS configuration information that receives in advance, obtains CSI-RS according to the carrier information of first carrier from information.

The CSI-RS computing unit specifically is used for calculating according to the carrier information of the configuration information of the first carrier that receives in advance and first carrier the initial value c of the CSI-RS of first carrier _Init, $c_{\mathrm{init}}=2^{10}\·(7\·(n_s+1)+l+1)\·(2\·N_{\mathrm{ID}}^{\mathrm{cell}}+1)+2\·N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CP}},$ Wherein, n _sThe timeslot number that comprises in the carrier information for first carrier, l are the index of the OFDM that comprises in the carrier information of first carrier,

The cell ID that comprises in the configuration information for first carrier, N _CPThe CP type that comprises in the configuration information for first carrier.

The CSI-RS computing unit also is used to use the initial value c of CSI-RS _Init, according to the channel condition information measurement pilot frequency of the index calculation first carrier of the timeslot number of first carrier and OFDM symbol

$r_{l,n_s}\left(m\right)=\frac{1}{\sqrt{2}}(1-2\·c\left(2m\right))+j\frac{1}{\sqrt{2}}(1-2\·c(2m+1)),$ $m=\mathrm{0,1},...,N_{\mathrm{RB}}^{\max ,\mathrm{DL}}-1,$ Wherein, c is for generating the sequence of CSI-RS, and the initial value of c is c _Init,

Resource Block (RB) quantity for first carrier.

The CSI-RS receiving element also is used to preserve the total data of the CSI-RS place subframe that receives;

Comparing unit, also be used for when CSI-RS that receives and the CSI-RS that calculates are inequality, be the time point that benchmark is adjusted intercepting CSI-RS forward or backward with the CSI-RS that receives the data of the CSI-RS place subframe that receives of preserving from the CSI-RS receiving element, heavily intercept CSI-RS, and will heavily intercept the CSI-RS that obtains and the CSI-RS that calculates and compare, when heavily the CSI-RS that obtains of intercepting is identical with the CSI-RS that calculates, according to the time point of the intercepting CSI-RS that adjusts, confirm the time difference between the first carrier and second carrier wave.

Comparing unit also is used for time difference between the first carrier and second carrier wave during less than the time gate limit value, confirms first carrier and described second carrier synchronization, and subscriber equipment and first carrier are synchronous; If the time difference between the first carrier and second carrier wave exceeds the time gate limit value, confirm that then first carrier is asynchronous with second carrier wave, and subscriber equipment is asynchronous with first carrier.

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

As shown in Figure 4, present embodiment also provides a kind of transmission of Information device, comprising: dispensing unit and transmitting element, wherein:

Dispensing unit is used for the carrier wave of Long Term Evolution (LTE) is configured;

Transmitting element, be used for the configuration information of carrier wave is sent to subscriber equipment (UE), the configuration information of carrier wave comprises one or more in the bandwidth of carrier wave, cell ID (ID), Cyclic Prefix (CP) type, channel condition information measurement pilot frequency (CSI-RS) configuration information and the downlink transfer pattern.

Transmitting element specifically is used for configuration information is sent to UE by switching command, measuring command, the proprietary order of UE or system broadcast message.

Transmitting element specifically is used for by with the backward compatibility carrier wave of the carrier wave of LTE pairing the configuration information of carrier wave being sent to subscriber equipment.

Sub-district ID is virtual subdistrict ID or is actual physical sub-district ID.

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

Transmitting element, also be used to the carrier wave configuration information cellular construction among the LTE, in information unit structure, comprise following one or more: carrier type information, access frequency point, bandwidth, sub-district ID, CP type, CSI-RS configuration information and downlink transfer pattern, reference information cellular construction in message sends to subscriber equipment with the configuration information of carrier wave.

The downlink transfer pattern comprises downlink transfer pattern 9, the transmission means of the data message of the Downlink Control Information correspondence in the downlink transfer pattern 9 in Physical Downlink Shared Channel (PDSCH) is the single antenna port transmission, or is the diversity transmission based on customer special reference signal; Downlink Control Information in the downlink transfer pattern 9 (DCI) adopts DCI Format (form) 1A or DCI Format 1.

The single antenna port transmission is the downlink transfer pattern of single antenna port 7 transmission;

Diversity based on customer special reference signal is transmitted as the downlink transfer pattern of transmitting based on the diversity of customer special reference signal.

Present embodiment also provides a kind of inking device of information, comprising: dispensing unit, wherein:

Dispensing unit is used for disposing the carrier wave employing of Long Term Evolution (LTE) and the identical configuration information of the backward compatibility carrier wave of pairing.Configuration information comprises: cell ID (ID) and CP type.

One of ordinary skill in the art will appreciate that all or part of step in the said method can instruct related hardware to finish by program, described program can be stored in the computer-readable recording medium, as read-only memory, disk or CD etc.Alternatively, all or part of step of the foregoing description also can use one or more integrated circuits to realize.Correspondingly, each the module/unit in the foregoing description can adopt the form of hardware to realize, also can adopt the form of software function module to realize.The present invention is not restricted to the combination of the hardware and software of any particular form.

The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.

Claims (20)

1. the method that detected carrier is synchronous is characterized in that, comprising:

Subscriber equipment is determined the carrier information of first carrier according to the carrier information of second carrier wave, and calculates the channel condition information measurement pilot frequency (CSI-RS) of described first carrier according to the carrier information of described first carrier;

Described subscriber equipment receives CSI-RS according to the carrier information of described first carrier from described first carrier, the CSI-RS that receives and the CSI-RS that calculates are compared, confirm whether synchronous whether described first carrier and second carrier wave and subscriber equipment and first carrier synchronous.

2. the method for claim 1 is characterized in that, described carrier information comprises: the index of frame number, subframe numbers, timeslot number and OFDM (OFDM) symbol.

3. method as claimed in claim 2 is characterized in that, receives CSI-RS according to the carrier information of described first carrier from described first carrier, comprising:

Described subscriber equipment is reception information from described first carrier, determines the position of CSI-RS in information according to the CSI-RS configuration information that receives in advance, obtains CSI-RS according to the carrier information of described first carrier from information.

4. method as claimed in claim 2 is characterized in that, calculates the CSI-RS of described first carrier according to the carrier information of first carrier, comprising:

The configuration information of the described first carrier that the subscriber equipment basis receives in advance and the carrier information of described first carrier calculate the initial value c of the CSI-RS of described first carrier _Init, described $c_{\mathrm{init}}=2^{10}\·(7\·(n_s+1)+l+1)\·(2\·N_{\mathrm{ID}}^{\mathrm{cell}}+1)+2\·N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CP}},$ Wherein, described n _sThe timeslot number that comprises in the carrier information for described first carrier, described l are the index of the OFDM that comprises in the carrier information of described first carrier, and be described

The cell ID that comprises in the configuration information for described first carrier, described N _CPThe Cyclic Prefix that comprises in the configuration information for described first carrier (CP) type.

5. method as claimed in claim 4 is characterized in that, also comprises:

Described subscriber equipment uses the initial value c of described CSI-RS _Init, according to the channel condition information measurement pilot frequency of the index calculation first carrier of the timeslot number of first carrier and OFDM symbol

Described $r_{l,n_s}\left(m\right)=\frac{1}{\sqrt{2}}(1-2\·c\left(2m\right))+j\frac{1}{\sqrt{2}}(1-2\·c(2m+1)),$ $m=\mathrm{0,1},...,N_{\mathrm{RB}}^{\max ,\mathrm{DL}}-1,$ Wherein, c is for generating the sequence of CSI-RS, and the initial value of c is c _Init,

Resource Block (RB) quantity for described first carrier.

6. the method for claim 1 is characterized in that, the CSI-RS that receives and the CSI-RS that calculates are compared, and confirms whether synchronous whether described first carrier and second carrier wave and subscriber equipment and first carrier synchronous, comprising:

Described CSI-RS that receives and the described CSI-RS that calculates are carried out correlation operation, if the CSI-RS that receives and the degree of correlation of the described CSI-RS that calculates satisfy the thresholding of setting, think that then the CSI-RS that receives is identical with the CSI-RS that calculates, confirm the first carrier and second carrier synchronization, and subscriber equipment and first carrier are synchronous.

7. the method for claim 1 is characterized in that, the CSI-RS that receives and the CSI-RS that calculates are compared, and confirms whether synchronous whether described first carrier and second carrier wave and subscriber equipment and first carrier synchronous, comprising:

If the CSI-RS that receives is identical with the described CSI-RS that calculates, then confirm the first carrier and second carrier synchronization, and subscriber equipment and first carrier are synchronous.

8. method as claimed in claim 3 is characterized in that, also comprises:

Described subscriber equipment is preserved the total data of the described CSI-RS place subframe that receives, when the described CSI-RS that receives and the described CSI-RS that calculates are inequality, from the data of the CSI-RS place subframe that receives of being preserved, be the time point that benchmark is adjusted intercepting CSI-RS forward or backward with the described CSI-RS that receives, heavily intercept CSI-RS, and will heavily intercept the CSI-RS and the described CSI-RS that calculates that obtain and compare, when heavily the CSI-RS that obtains of intercepting is identical with the described CSI-RS that calculates, according to the time point of the intercepting CSI-RS that adjusts, confirm the time difference between the described first carrier and second carrier wave.

9. method as claimed in claim 8 is characterized in that, also comprises:

The time difference of described subscriber equipment between described first carrier and described second carrier wave confirmed described first carrier and described second carrier synchronization during less than the time gate limit value, and subscriber equipment and first carrier are synchronous; If the time difference between described first carrier and described second carrier wave exceeds described time gate limit value, confirm that then described first carrier is asynchronous with described second carrier wave, and subscriber equipment is asynchronous with first carrier.

10. the method for claim 1 is characterized in that, also comprises:

Described subscriber equipment confirm described first carrier and second carrier wave whether synchronously after, whether synchronous result feeds back to the base station by affirmation (ACK), non-affirmation (NACK) or RRM (RRM) measurement report with described first carrier and second carrier wave.

11. the method for claim 1 is characterized in that:

Described first carrier is the N type carrier wave in the Long Term Evolution (LTE), and described second carrier wave is the backward compatibility carrier wave among the LTER8/R9/R10, the carrier wave that the described first carrier and second carrier wave use for pairing.

12. method as claimed in claim 1 or 2 is characterized in that, subscriber equipment is determined to comprise the carrier information of first carrier according to the carrier information of second carrier wave:

Subscriber equipment thinks that first carrier and second carrier wave are synchronous in time, and frame number, subframe numbers, timeslot number in the carrier information of acquiescence first carrier and the carrier information of second carrier wave are identical with the value of the index of OFDM symbol.

13. the device that detected carrier is synchronous is characterized in that, comprising: carrier information determining unit, channel condition information measurement pilot frequency (CSI-RS) computing unit, CSI-RS receiving element and comparing unit, wherein:

Described carrier information determining unit is used for determining according to the carrier information of second carrier wave carrier information of first carrier;

Described CSI-RS computing unit is used for the carrier information according to the definite first carrier of described carrier information determining unit, calculates the CSI-RS of described first carrier;

Described CSI-RS receiving element is used for receiving CSI-RS according to the carrier information of described first carrier from described first carrier;

Described comparing unit, be used for the CSI-RS that CSI-RS that described CSI-RS receiving element is received and described CSI-RS computing unit calculate and compare, confirm the described first carrier and second carrier wave whether synchronously and subscriber equipment and first carrier whether synchronous.

14. device as claimed in claim 13 is characterized in that, described carrier information comprises: the index of frame number, subframe numbers, timeslot number and OFDM (OFDM) symbol.

15. device as claimed in claim 14 is characterized in that:

Described CSI-RS receiving element specifically is used for determining the position of CSI-RS in information from described first carrier reception information according to the CSI-RS configuration information that receives in advance, obtains CSI-RS according to the carrier information of described first carrier from information.

16. device as claimed in claim 14 is characterized in that:

Described CSI-RS computing unit specifically is used for calculating according to the carrier information of the configuration information of the described first carrier that receives in advance and described first carrier the initial value c of the CSI-RS of described first carrier _Init, described $c_{\mathrm{init}}=2^{10}\·(7\·(n_s+1)+l+1)\·(2\·N_{\mathrm{ID}}^{\mathrm{cell}}+1)+2\·N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CP}},$ Wherein, described n _sThe timeslot number that comprises in the carrier information for described first carrier, described l are the index of the OFDM that comprises in the carrier information of described first carrier, and be described

The cell ID that comprises in the configuration information for described first carrier, described N _CPThe Cyclic Prefix that comprises in the configuration information for described first carrier (CP) type.

17. device as claimed in claim 16 is characterized in that:

Described CSI-RS computing unit also is used to use the initial value c of described CSI-RS _Init, according to the channel condition information measurement pilot frequency of the index calculation first carrier of the timeslot number of first carrier and OFDM symbol

Described $r_{l,n_s}\left(m\right)=\frac{1}{\sqrt{2}}(1-2\·c\left(2m\right))+j\frac{1}{\sqrt{2}}(1-2\·c(2m+1)),$ $m=\mathrm{0,1},...,N_{\mathrm{RB}}^{\max ,\mathrm{DL}}-1,$ Wherein, c is for generating the sequence of CSI-RS, and the initial value of c is c _Init,

Resource Block (RB) quantity for described first carrier.

18. device as claimed in claim 13 is characterized in that:

Described comparing unit if it is identical with the CSI-RS that described CSI-RS computing unit calculates specifically to be used for the CSI-RS that described CSI-RS receiving element receives, is then confirmed the first carrier and second carrier synchronization, and subscriber equipment and first carrier are synchronous.

19. device as claimed in claim 15 is characterized in that:

Described CSI-RS receiving element also is used to preserve the total data of the described CSI-RS place subframe that receives;

Described comparing unit, also be used for when the described CSI-RS that receives and the described CSI-RS that calculates are inequality, be the time point that benchmark is adjusted intercepting CSI-RS forward or backward with the described CSI-RS that receives the data of the CSI-RS place subframe that receives of preserving from described CSI-RS receiving element, heavily intercept CSI-RS, and will heavily intercept the CSI-RS and the described CSI-RS that calculates that obtain and compare, when heavily the CSI-RS that obtains of intercepting is identical with the described CSI-RS that calculates, according to the time point of the intercepting CSI-RS that adjusts, confirm the time difference between the described first carrier and second carrier wave.

20. device as claimed in claim 19 is characterized in that:

Described comparing unit also is used for time difference between described first carrier and described second carrier wave during less than the time gate limit value, confirms described first carrier and described second carrier synchronization, and subscriber equipment and first carrier are synchronous; If the time difference between described first carrier and described second carrier wave exceeds described time gate limit value, confirm that then described first carrier is asynchronous with described second carrier wave, and subscriber equipment is asynchronous with first carrier.

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