CN103384163A

CN103384163A - Method and device for transmitting physical broadcast channel

Info

Publication number: CN103384163A
Application number: CN2012101386518A
Authority: CN
Inventors: 高雪娟; 潘学明
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2012-05-04
Filing date: 2012-05-04
Publication date: 2013-11-06
Anticipated expiration: 2032-05-04
Also published as: CN103384163B; WO2013163952A1

Abstract

An embodiment of the invention discloses a method and device for transmitting a PBCH and relates to the technical field of wireless communication. A PBCH transmitting plan capable of being applied to a novel carrier type is provided. According to the method and device for transmitting the physical broadcast channel, a base station is located in a PBCH transmitting subframe, resource mapping is performed on the PBCH on the basis of an RE corresponding to a tracking downlink reference signal contained in a PBCH transmitting resource on an antenna port for transmitting the tracking downlink reference signal and/or an RE corresponding to a demodulating downlink reference signal on an antenna port for transmitting the demodulating downlink reference signal, and the PBCH is transmitted according to a resource mapping result. According to the method and device for transmitting the physical broadcast channel, more reasonable resource mapping can be performed on the PBCH according to transmitting characteristics of the reference signals on the novel carrier type, the method and device for transmitting the physical broadcast channel can be applied to the novel carrier type, and therefore resource utilization rate and PBCH transmitting performance are improved.

Description

The transmission method of Physical Broadcast Channel and equipment

Technical field

The present invention relates to wireless communication field, relate in particular to a kind of transmission method and equipment of Physical Broadcast Channel.

Background technology

In long-term evolution upgrading (Long Term Evolution-Advanced, LTE-A) system, the peak rate of system has huge raising than Long Term Evolution (Long Term Evolution, LTE) system, requires to reach descending 1Gbps, up 500Mbps.Therefore, the LTE-A system needs the terminal extension available bandwidth, be about under same base station (eNB) a plurality of continuous or discrete carrier aggregation together, be subscriber equipment (User Equipment simultaneously, UE) service is to provide required speed, as shown in Figure 1.These carrier waves that condense together are called again member carrier (Component Carrier, CC).Each residential quarter can be a member carrier, and the residential quarter under different e NB (member carrier) can not polymerization.In order to guarantee that the UE in the LTE system can be in the carrier wave work of each polymerization, each carrier wave maximum is no more than 20MHz.

Downlink reference signal in the LTE-A system mainly comprises the exclusive reference signal in residential quarter (Cell-specific Reference Signals, CRS), downlink user DRS (Dedicated Reference Signal) (UE-specific Reference Signal, URS, perhaps also become Downlink or Dedicated Reference Signal, DRS), location reference signals (Positioning Reference Signal, PRS), channel state information reference signals (Channel State Information Reference Signal, CSI-RS).

CRS supports 1, 2, 4 antenna port transmission, be configured in respectively antenna port p=0, p=0, 1, p=0, 1, 2, 3, be mainly used in Physical Broadcast Channel (Physical Broadcast Channel, PBCH), Physical Downlink Control Channel (Physical Downlink Control Channel, PDCCH), physical mixed automatic repeat request indicating channel (Physical HARQ Indication Channel, PHICH), Physical Control Format Indicator Channel (Physical Control Format Indicator Channel, PCIFCH), Physical Downlink Shared Channel (Physical Downlink Shared Channel, PDSCH) etc. data demodulates, at a Physical Resource Block (Physical Resource Block, PRB) mapping mode in is as shown in Fig. 2 a and Fig. 2 b.Wherein, Fig. 2 a is the mapping mode under regular circulation prefix (Cyclic Prefix, CP), and Fig. 2 b is the mapping mode under expansion CP.

DRS supports 1 ~ 8 antenna port transmission, can be configured in antenna port p=5, p=7, p=8, p=7,8 ..., υ+6, wherein υ is transport layer (Layer) number of PDSCH, DRS mapping position on antenna port 7/8/11/13 is identical, and the DRS mapping position on antenna port 9/10/12/14 is identical, as shown in Fig. 3 a and Fig. 3 b.Wherein, Fig. 3 a is the mapping mode under conventional CP, and Fig. 3 b is the mapping mode under expansion CP.DRS is only upper transmission of PRB at the PDSCH place of adopting transmission mode 7 ~ 9.Version 10(Rel-10) regulation in, have for example 6 PRB in the middle of subdistrict frequency band of the overlapping PRB(of resource in DRS and PBCH or synchronizing signal in same subframe) time, DRS can not send in these PRB, therefore the transmission of the PDSCH in these PRB can not be based on the DRS demodulation, but PDSCH can be based on the CRS demodulation in these PRB.

PBCH in the LTE-A system upgrades take 40ms as the cycle, front four OFDMs (Orthogonal Frequency Division Multiplexing of the 2nd time slot (being time slot 1) of the subframe 0 of each radio frames in 4 continuous radio frames, OFDM) transmit on symbol, fixedly take 72 subcarriers of subdistrict frequency band central authorities on frequency domain, as shown in Fig. 4 a and Fig. 4 b, wherein, Fig. 4 a is the mapping mode under conventional CP, is the mapping mode under expansion CP as Fig. 4 b.Wherein the PBCH in each radio frames can both independently decode.PBCH supports single antenna port and two kinds of transmission meanss of many antenna ports transmit diversity transmission, during 2 antenna port transmission, adopt space frequency block coding (Space-Frequency Block Coding, SFBC) scheme, need available resource units (the Resource Element on the OFDM symbol at PBCH transmission place, RE) number is even number, during 4 antenna port transmission, adopt SFBC and frequency to switch transmission diversity (Frequency Switched Transmit Diversity, FSTD) scheme that combines, needing available RE number on the OFDM symbol at PBCH transmission place is 4 integral multiple.PBCH always carries out resource mapping based on the CRS transmission hypothesis of 4 antenna ports, and its available RE resource transmits for it RE RE in addition corresponding to CRS that removes 4 antenna ports on OFDM symbol of place.Therefore, under conventional CP, available RE number in cycle is 4 * 6 * [4 * 12-8]=960(4 radio frames to PBCH at 40ms, account on each radio frames frequency domain and account for 4 OFDM symbols on 6 PRB, time domain, there are 8 RE that CRS is corresponding in 4 OFDM symbols in each PRB), because PBCH adopts Quadrature Phase Shift Keying (Quadrature Phase-Shift Keying, QPSK) modulation, PBCH is 960 * 2=1920 in the number of coded bits of 40ms in the cycle, in like manner, under expansion CP, number of coded bits is 2 * 4 * 6 * [4 * 12-12]=1728.

PBCH is used for carrying Master Information Block (Master Information Block, MIB), carry some main cell physical layer information, be used for transmission and make the tentatively parameter of connecting system of UE, comprise: the downlink system bandwidth of this residential quarter, PHICH configuration and System Frame Number (System Frame Number, SFN).MIB has only carried most important 8 bit SFN information, the SFN information of other 2 bits can obtain by the PBCH implicit expression of decoding, the PBCH that namely decoding obtains according to reality is the radio frames position acquisition in the time interval at 40ms, first radio frames correspondence 00, second radio frames correspondence 01,10, the four radio frames correspondences 11 of the 3rd radio frames correspondence.In addition, PBCH carries out demodulation based on CRS, and the CRS antenna port number of use can represent with different scramble sequence by cyclic redundancy check (CRC) (Cyclic Redundancy Check, the CRC) information to PBCH, and is as shown in table 1.UE can obtain this antenna port number by the scramble sequence of the CRC of blind check PBCH.The channels such as PDCCH, PHICH, PCFICH use the CRS antenna port number identical with PBCH.

The CRS transmitting antenna	PBCH CRC scramble sequence
		1	<0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0>
2	<1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1>
		4	<0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1>

Table 1

In order further to improve resource utilization ratio, the version 10(Rel-11 of LTE-A system) determine to introduce new carrier type (Additional Carrier Type or New Carrier Type, NCT), with strengthen the system spectrum utilance, better support heterogeneous network, reduce power consumption.

At present, how to carry out the transmission of PBCH on the NCT carrier wave, also there is no concrete implementation.

Summary of the invention

The embodiment of the present invention provides a kind of transmission method and equipment of Physical Broadcast Channel, is used for providing a kind of PBCH transmission plan that can be applied on the NCT carrier wave.

The transmission method of a kind of Physical Broadcast Channel PBCH, the method comprises:

The base station is in PBCH transmission subframe, based on corresponding Resource Unit RE on the antenna port that transmits the place for the downlink reference signal of following the tracks of at described downlink reference signal for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation corresponding RE on the antenna port at described downlink reference signal transmission place for demodulation, described PBCH is carried out resource mapping; Wherein, described downlink reference signal for following the tracks of comprises that at least described downlink reference signal for demodulation comprises downlink user DRS (Dedicated Reference Signal) DRS at least for the exclusive reference signal CRS in residential quarter that follows the tracks of;

Described base station sends described PBCH according to the resource mapping result.

Terminal is based on corresponding Resource Unit RE on the antenna port that transmits the place for the downlink reference signal of following the tracks of at described downlink reference signal for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation corresponding RE on the antenna port at described downlink reference signal transmission place for demodulation, receive PBCH;

Wherein, described downlink reference signal for following the tracks of comprises that at least described downlink reference signal for demodulation comprises downlink user DRS (Dedicated Reference Signal) DRS at least for the exclusive reference signal CRS in residential quarter that follows the tracks of.

A kind of base station, this base station comprises:

The resource mapping unit, be used in PBCH transmission subframe, based on corresponding Resource Unit RE on the antenna port that transmits the place for the downlink reference signal of following the tracks of at described downlink reference signal for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation corresponding RE on the antenna port at described downlink reference signal transmission place for demodulation, described PBCH is carried out resource mapping; Wherein, described downlink reference signal for following the tracks of comprises that at least described downlink reference signal for demodulation comprises downlink user DRS (Dedicated Reference Signal) DRS at least for the exclusive reference signal CRS in residential quarter that follows the tracks of;

Transmitting element is used for sending described PBCH according to the resource mapping result.

A kind of terminal, this terminal comprises:

Receiving element, corresponding Resource Unit RE on the antenna port that transmits the place for the downlink reference signal of following the tracks of at described downlink reference signal for following the tracks of that is used for comprising based on the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation corresponding RE on the antenna port at described downlink reference signal transmission place for demodulation, receive PBCH; Wherein, described downlink reference signal for following the tracks of comprises that at least described downlink reference signal for demodulation comprises downlink user DRS (Dedicated Reference Signal) DRS at least for the exclusive reference signal CRS in residential quarter that follows the tracks of;

Acquiring unit is used for obtaining carrier information according to the PBCH that receives.

In this programme, the base station is in PBCH transmission subframe, RE based on correspondence on the antenna port that transmits the place for the downlink reference signal of following the tracks of at this downlink reference signal that is used for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation is used for corresponding RE on the antenna port at downlink reference signal transmission place of demodulation at this, PBCH is carried out resource mapping, and send PBCH according to the resource mapping result.As seen, be used for the downlink reference signal of following the tracks of and/or the RE that is used for correspondence on the downlink reference signal antenna port of demodulation on the new carrier type of this programme basis when PBCH is carried out resource mapping, PBCH is carried out more rational resource mapping, the PBCH that makes this scheme can be applied on the NCT carrier wave transmits, to improve resource utilization and PBCH transmission performance.

Description of drawings

Fig. 1 is carrier aggregation schematic diagram of the prior art;

Fig. 2 a is the resource mapping schematic diagram of CRS of the prior art under conventional CP;

Fig. 2 b is the resource mapping schematic diagram of CRS of the prior art under expansion CP;

Fig. 3 a is the resource mapping schematic diagram of DRS of the prior art under conventional CP;

Fig. 3 b is the resource mapping schematic diagram of DRS of the prior art under expansion CP;

Fig. 4 a is the resource mapping schematic diagram of PBCH of the prior art under conventional CP;

Fig. 4 b is the resource mapping schematic diagram of PBCH of the prior art under expansion CP;

The method flow schematic diagram that Fig. 5 provides for the embodiment of the present invention;

The other method schematic flow sheet that Fig. 6 provides for the embodiment of the present invention;

Fig. 7 a is a kind of resource mapping method of 2 antenna port PBCH transmit diversities in the embodiment of the present invention;

Fig. 7 b is the another kind of resource mapping method of 2 antenna port PBCH transmit diversities in the embodiment of the present invention;

Fig. 7 c is another resource mapping method of 2 antenna port PBCH transmit diversities in the embodiment of the present invention;

Fig. 7 d is another resource mapping method of 2 antenna port PBCH transmit diversities in the embodiment of the present invention;

Fig. 8 a is a kind of resource mapping method of 4 antenna port PBCH transmit diversities in the embodiment of the present invention;

Fig. 8 b is the another kind of resource mapping method of 4 antenna port PBCH transmit diversities in the embodiment of the present invention;

Fig. 8 c is another resource mapping method of 4 antenna port PBCH transmit diversities in the embodiment of the present invention;

Fig. 8 d is another resource mapping method of 4 antenna port PBCH transmit diversities in the embodiment of the present invention;

The device structure schematic diagram that Fig. 9 provides for the embodiment of the present invention;

Another device structure schematic diagram that Figure 10 provides for the embodiment of the present invention.

Embodiment

For the programme of work of NCT carrier wave just under discussion, the conclusion of reaching at present comprises: be supported in the upper CRS transmission take 5ms as the cycle of single antenna port (antenna port 0), CRS is not used in the downlink data demodulation, only is used for following the tracks of and measuring; In Rel-11, the NCT carrier wave can not work alone, and needs and the associated working of a tradition (legacy) carrier wave; Whether there is certain deviation with the legacy carrier wave according to receiving terminal on time domain and frequency domain, be divided into sync carrier and asynchronous carrier wave, the latter need to carry out independent Time and Frequency Synchronization and process, therefore need synchronous signal transmission on the NCT carrier wave, the time-frequency domain resources of synchronous transmission of signal needs not overlapping with the resource of the downlink reference signals such as CRS and DRS, to improve the down transmission efficiency of NCT carrier wave.In addition, in Rel-12 and later release, the NCT carrier wave may be supported to work alone.

Based on above-mentioned analysis, on the NCT carrier wave, the CRS of definition transmission at present is not used in the demodulation of downlink data transmission, the downlink data transmission such as PBCH, PDCCH, PHCIH, PCIFCH, PDSCH may be carried out demodulation based on DRS, and when PBCH and DRS exist when overlapping, can't transmitting downlink data in the PRB at PBCH place, thus NCT carrier wave down transmission efficiency reduced; In addition, only have 1 antenna port CRS transmission on the NCT carrier wave, PBCH does not need always to suppose that 4 antenna port CRS carry out resource mapping.

Referring to Fig. 5, the embodiment of the present invention is for the above-mentioned characteristic of NCT carrier wave, and the transmission method of a kind of PBCH for base station side is provided, and comprises the following steps:

Step 50: the base station is in PBCH transmission subframe, Resource Unit (RE) based on correspondence on the antenna port that transmits the place for the downlink reference signal of following the tracks of at this downlink reference signal that is used for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation is used for corresponding RE on the antenna port at downlink reference signal transmission place of demodulation at this, and PBCH is carried out resource mapping; Wherein, the downlink reference signal that is used for following the tracks of comprises that at least for the exclusive reference in residential quarter (CRS) of following the tracks of, the downlink reference signal that is used for demodulation comprises downlink user DRS (Dedicated Reference Signal) (DRS) at least;

Step 51: the base station sends PBCH according to the resource mapping result, sends PBCH on the resource that namely base station is shone upon in step 50.

Further, the base station also sends the downlink reference signal for demodulation PBCH, and the downlink reference signal that is used for demodulation PBCH is DRS or the CRS that is used for demodulation.

As a kind of situation, when the downlink reference signal that is used for demodulation PBCH is DRS, can adopt a kind of in following seven kinds of methods when in step 50, resource mapping is carried out in the base station:

The first, PBCH is mapped on whole RE in the PBCH transfer resource;

The second, PBCH is mapped to other RE that transmit for downlink reference signal of following the tracks of at this except the downlink reference signal that is used for following the tracks of in the PBCH transfer resource RE corresponding on the antenna port at place;

The 3rd, PBCH is mapped in the PBCH transfer resource is used for other RE RE corresponding on the antenna port at downlink reference signal transmission place of demodulation at this except the downlink reference signal that is used for demodulation;

The 4th, PBCH is mapped in the PBCH transfer resource is used for RE corresponding on the antenna port at downlink reference signal transmission place of demodulation and the downlink reference signal that is used for following the tracks of other RE RE corresponding on the antenna port at this is used for following the tracks of downlink reference signal transmission place at this except the downlink reference signal that is used for demodulation;

The 5th, PBCH is mapped in the PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0;

The 6th, PBCH is mapped on other RE that transmit at this DRS except DRS in the PBCH transfer resource RE corresponding on K the antenna port at place;

The 7th, PBCH is mapped to transmits RE corresponding on K the antenna port at place and CRS in the PBCH transfer resource at this DRS except DRS on other RE RE corresponding on antenna port 0.

Adopting above-mentioned first method, namely the base station was mapped to whole RE in the PBCH transfer resource when upper with PBCH, and PBCH is in regular circulation prefix (CP) and to expand the coded-bit that carries under CP be 2304 bits;

Adopting above-mentioned Lung biopsy, being the base station is mapped to PBCH in the PBCH transfer resource except CRS on antenna port 0 on other RE corresponding RE the time, the coded-bit that PBCH carries under conventional CP is 2208 bits, and the coded-bit that carries under expansion CP is 2112 bits;

Adopting above-mentioned the 6th kind of method, when to be the base station be mapped in described PBCH transfer resource PBCH on other RE except the RE of DRS correspondence on K the antenna port at described DRS transmission place, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B] bit, wherein, B is the number that in the PBCH transfer resource, DRS transmits RE corresponding on K the antenna port at place at this DRS;

Adopting above-mentioned the 7th kind of method, being the base station is mapped to PBCH in described PBCH transfer resource except DRS on other RE the RE of RE corresponding on K the antenna port at described DRS transmission place and CRS correspondence on antenna port 0 time, the coded-bit that PBCH carries under conventional CP is 48*[46-B] bit, the coded-bit that carries under expansion CP is 48*[44-B] bit, wherein, B is the number that in the PBCH transfer resource, DRS transmits RE corresponding on K the antenna port at place at this DRS.

preferably, when any one in adopting above-mentioned seven kinds of methods carries out resource mapping, particularly adopting above-mentioned the first, the third, or the 6th kind of method, namely on the whole RE in the base station is mapped to the PBCH transfer resource with PBCH, or be used for other RE RE corresponding on the antenna port at downlink reference signal transmission place of demodulation except the downlink reference signal that is used for demodulation at this in the PBCH transfer resource, or in the PBCH transfer resource on other RE except the RE of DRS correspondence on K the antenna port at this DRS transmission place the time, need satisfy at least one in following two conditions:

Condition 1: the subframe that the base station sends the downlink reference signal that is used for tracking is different from the subframe that sends PBCH (being PBCH transmission subframe); Perhaps,

It is different from the PRB that sends PBCH that the base station sends the Physical Resource Block (PRB) of the downlink reference signal that is used for tracking; Perhaps,

The base station transmission is different from the subframe that sends PBCH for the subframe of the downlink reference signal of following the tracks of, and the base station transmission is different from the PRB that sends PBCH for the PRB of the downlink reference signal of tracking.

Condition 2: the subframe that the base station sends the CRS that is used for tracking is different from the subframe that sends PBCH; Perhaps,

The PRB that the base station sends the CRS that is used for tracking is different from the PRB that sends PBCH; Perhaps,

The base station sends for the subframe of the CRS that follows the tracks of different from the subframe that sends PBCH, and the PRB that the base station sends the CRS that is used for tracking is different from the PRB that sends PBCH.

preferably, when any one in adopting above-mentioned seven kinds of methods carries out resource mapping, particularly adopting above-mentioned the first, the second, or during Lung biopsy, namely on the whole RE in the base station is mapped to the PBCH transfer resource with PBCH, or in the PBCH transfer resource except the downlink reference signal of be used for following the tracks of other RE RE corresponding on the antenna port at this is used for following the tracks of downlink reference signal transmission place, or in the PBCH transfer resource except CRS on antenna port 0 on other RE corresponding RE the time, need to satisfy: in PBCH transmission subframe and/or time slot, OFDM (OFDM) symbol at PBCH transmission place is different from the OFDM symbol at DRS transmission place.

When adopting P antenna port transmit diversity transmission PBCH in the base station:

The base station comprises the OFDM symbol for the downlink reference signal of following the tracks of and/or the downlink reference signal that is used for demodulation corresponding RE on the antenna port at its transmission place in the PBCH transfer resource, vacating the available RE of part and do not carry out the PBCH resource mapping, is the integral multiple of P so that be used for the number of the RE of transmission PBCH on this OFDM symbol; Wherein, P=2 or 4, available RE are except the downlink reference signal that is used for following the tracks of and/or the downlink reference signal that is used for demodulation other RE RE corresponding on the antenna port at its transmission place on this OFDM symbol in the PBCH transfer resource.Preferably, the OFDM symbol for the integral multiple that is P of the available RE number on above-mentioned OFDM symbol can be mapped in PBCH on all the available RE on this OFDM, does not namely vacate the available RE of part or the available RE number determining to vacate is 0.

preferably, the above-mentioned available RE of part that vacates does not carry out the method for PBCH resource mapping, be applicable to adopt the second, the third, the 4th kind, the 5th kind, when the 6th kind or the 7th kind of method are carried out resource mapping to PBCH, be that the base station is mapped to PBCH the RE that removes correspondence on the antenna port that transmits the place for the downlink reference signal of following the tracks of at this downlink reference signal that is used for following the tracks of in the PBCH transfer resource, and/or on the downlink reference signal that is used for demodulation other RE outside this is used for RE corresponding on the antenna port at downlink reference signal transmission place of demodulation the time, perhaps, the base station is mapped to PBCH the RE that removes CRS correspondence on antenna port 0 in the PBCH transfer resource, and/or on other RE outside the RE of DRS correspondence on K the antenna port at this DRS transmission place the time.

Illustrate, when adopting 2 antenna port transmit diversities transmission PBCH in the base station, vacate the method that the available RE of part do not carry out the PBCH resource mapping and can adopt the method to Fig. 7 d as Fig. 7 a.When adopting 4 antenna port transmit diversities transmission PBCH in the base station, vacate the method that the available RE of part do not carry out the PBCH resource mapping and can adopt the method to Fig. 8 d as Fig. 8 a.Fig. 7 a is to Fig. 7 d, and Muted RE is the RE that vacates, and Grouped RE is 2 and is a pair of RE that is used for the PBCH transmission; Fig. 8 a is to Fig. 8 d, and Muted RE is the RE that vacates, and Grouped RE is 4 and is a pair of RE that is used for the PBCH transmission.That be equipped with oblique line and indicate CRS is the RE that is used for the CRS transmission.

Accordingly, adopting Lung biopsy, being the base station is mapped to PBCH in the PBCH transfer resource except CRS on antenna port 0 on other RE corresponding RE the time, the coded-bit that PBCH carries under conventional CP is 48*[46-A] bit, the coded-bit that carries under expansion CP is 48*[44-A] bit, wherein, A is the number of the RE that vacates; Perhaps,

Adopting the 6th kind of method, when to be the base station be mapped in the PBCH transfer resource PBCH on other RE except the RE of DRS correspondence on K the antenna port at this DRS transmission place, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at this DRS transmission place in the PBCH transfer resource; Perhaps,

Adopting the 7th kind of method, being the base station is mapped to PBCH in the PBCH transfer resource except DRS on other RE the RE of RE corresponding on K the antenna port at this DRS transmission place and CRS correspondence on antenna port 0 time, the coded-bit that PBCH carries under conventional CP is 48*[46-B-A] bit, the coded-bit that carries under expansion CP is 48*[44-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at this DRS transmission place in the PBCH transfer resource.

The value of above-mentioned K can be 1 or 2 or 4, when K=1; K the antenna port at DRS transmission place is antenna port 5 or antenna port 7 or antenna port 8; Greater than 1 the time, K the antenna port at DRS transmission place is that antenna port 7 arrives antenna port K+6 as K.

When the downlink reference signal that is used for demodulation PBCH is DRS, in step 51, the base station is when sending PBCH, the Cyclic Redundancy Check of PBCH do not carried out scrambling, the antenna port number that is used for the DRS transmission place of demodulation PBCH is the antenna port number of making an appointment; Perhaps,

The antenna port number at place and the corresponding relation of scramble sequence are transmitted according to the DRS that is used for demodulation PBCH that sets in the base station, determine that current transmission is used for scramble sequence corresponding to antenna port number that the DRS of demodulation PBCH uses, and use this scramble sequence to carry out scrambling to the CRC of PBCH, scramble sequence represents the antenna port number for the DRS transmission place of demodulation PBCH.

The downlink reference signal that is used for following the tracks of can also comprise: one or more combinations of PRS, CSI-RS.

As another kind of situation, when being used for the CRS of demodulation, can adopt any one in following two kinds of methods when the downlink reference signal that is used for demodulation PBCH when in step 50, resource mapping is carried out to PBCH in the base station:

The first, PBCH is mapped in the PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0, antenna port 1, antenna port 2 and antenna port 3;

The second, PBCH is mapped to transmits RE corresponding on the antenna port at place and CRS in the PBCH transfer resource at this DRS except DRS on other RE RE corresponding on antenna port 0, antenna port 1, antenna port 2 and antenna port 3.

When adopting above-mentioned second method, be the base station with PBCH be mapped in described PBCH transfer resource except DRS at RE corresponding on the antenna port at this DRS transmission place and CRS on antenna port 0, antenna port 1, antenna port 2 and antenna port 3 during other RE corresponding RE, the coded-bit that PBCH carries under conventional CP is 48*[40-B] bit, the coded-bit that carries under expansion CP is 48*[36-B] bit, wherein, B is the number that in the PBCH transfer resource, DRS transmits RE corresponding on the antenna port at place at this DRS.

The base station sends the CRS that is used for demodulation PBCH, and concrete grammar can be as follows:

send the CRS that is used for demodulation PBCH in PBCH transmission subframe, send the CRS that is used for demodulation PBCH on the PRB that perhaps PBCH transmission RE is corresponding in PBCH transmission subframe, perhaps send the CRS that is used for demodulation PBCH in the time slot at the transmission of the PBCH in PBCH transmission subframe place, send the CRS that is used for demodulation PBCH in the PRB that perhaps in the time slot of the transmission PBCH in PBCH transmission subframe, PBCH transmission RE is corresponding, perhaps send the CRS that is used for demodulation PBCH on the OFDM symbol that is used for transmission PBCH in PBCH transmission subframe, perhaps transmit at PBCH the CRS that sends on the OFDM symbol that is used for transmission PBCH in the PRB that in subframe, PBCH transmission RE is corresponding for demodulation PBCH.

In this method, initialization is carried out according to following formula one or two couples of DRS of formula in the base station:

Formula one:

Formula two:

Wherein, n _SCIDBe the parameter relevant to multi-user's Multiinputoutput MU-MIMO, can make an appointment to PBCH is fixed value, for example 0 or 1;

Be the numbering of PBCH transmission subframe, i.e. each subframe initialization once; X is the exclusive parameter of UE, and can make an appointment to PBCH is that fixed value, the value of X are integer;

Be cell ID.

In this method, PBCH transmission subframe is predefined subframe for the PBCH transmission, for example subframe 0 in each radio frames.The PBCH transfer resource is the set of RE that is used for the OFDM symbol (for example front 4 OFDM symbols of second time slot of the subframe 0 of each radio frames) of transmission PBCH in the PRB at PBCH transmission place in predefined, PBCH transmission subframe.In PBCH transmission subframe, the PRB at PBCH transmission place can be the PRB at 72 subcarrier places of frequency band central authorities, i.e. 6 PRB of frequency band central authorities etc.

Referring to Fig. 6, the embodiment of the present invention provides the transmission method of a kind of PBCH for end side, and the method comprises the following steps:

Step 60: terminal is based on the RE of correspondence on the antenna port that transmits the place for the downlink reference signal of following the tracks of at this downlink reference signal that is used for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation is used for corresponding RE on the antenna port at downlink reference signal transmission place of demodulation at this, receives PBCH; Wherein, the downlink reference signal that is used for following the tracks of comprises that at least for the CRS that follows the tracks of, the downlink reference signal that is used for demodulation comprises DRS at least.

Further, after step 60, can comprise the steps:

Step 61: terminal is obtained carrier information according to the PBCH that receives.

Further, terminal also receives the downlink reference signal for demodulation PBCH, and the downlink reference signal that is used for demodulation PBCH is DRS or the CRS that is used for demodulation.

As a kind of situation, when the downlink reference signal that is used for demodulation PBCH was DRS, in step 60, terminal received PBCH, specifically can adopt a kind of in following seven kinds of methods::

The first, on the whole RE in the PBCH transfer resource, receive PBCH; Perhaps,

The second, transmit other RE RE corresponding on the antenna port at place for downlink reference signal of following the tracks of at this except the downlink reference signal that is used for following the tracks of in the PBCH transfer resource, receive PBCH;

The 3rd, be used for other RE RE corresponding on the antenna port at downlink reference signal transmission place of demodulation except the downlink reference signal that is used for demodulation at this in the PBCH transfer resource, receive this PBCH;

The 4th, be used for RE corresponding on the antenna port at downlink reference signal transmission place of demodulation and the downlink reference signal that is used for following the tracks of other RE RE corresponding on the antenna port at this is used for following the tracks of downlink reference signal transmission place except the downlink reference signal that is used for demodulation at this in the PBCH transfer resource, receive PBCH;

The 5th, in the PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0, receive PBCH; Perhaps,

The 6th, transmit at DRS except DRS in the PBCH transfer resource on other RE RE corresponding on K the antenna port at place, receive PBCH;

The 7th, transmit RE corresponding on K the antenna port at place and CRS at this DRS except DRS in the PBCH transfer resource on other RE RE corresponding on antenna port 0, receive PBCH.

Adopting above-mentioned first method, namely on whole RE of terminal in the PBCH transfer resource, when receiving PBCH, the coded-bit that PBCH carries under conventional CP and expansion CP is 2304 bits;

Adopting above-mentioned Lung biopsy, be terminal in the PBCH transfer resource except CRS on antenna port 0 on other RE corresponding RE the time, when receiving PBCH, the coded-bit that PBCH carries under conventional CP is 2208 bits, and the coded-bit that carries under expansion CP is 2112 bits;

Adopting above-mentioned the 6th kind of method, be terminal in the PBCH transfer resource except DRS on other RE the RE of correspondence on K the antenna port at this DRS transmission place, when receiving PBCH, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B] bit, wherein, B is the number that in the PBCH transfer resource, DRS transmits RE corresponding on K the antenna port at place at this DRS;

Adopting above-mentioned the 7th kind of method, be that terminal is transmitted RE corresponding on K the antenna port at place and CRS on other RE RE corresponding on antenna port 0 at this DRS except DRS in the PBCH transfer resource, when receiving PBCH, the coded-bit that PBCH carries under conventional CP is 48*[46-B] bit, the coded-bit that carries under expansion CP is 48*[44-B] bit, wherein, B is the number of DRS corresponding RE on K the antenna port at described DRS transmission place in the PBCH transfer resource.

preferably, when any one in adopting above-mentioned seven kinds of methods receives PBCH, particularly adopting above-mentioned the first, the third, or the 6th kind of method, namely in terminal on the whole RE in the PBCH transfer resource, or be used for other RE RE corresponding on the antenna port at downlink reference signal transmission place of demodulation except the downlink reference signal that is used for demodulation at this in the PBCH transfer resource, or in the PBCH transfer resource except DRS on other RE the RE of correspondence on K the antenna port at this DRS transmission place, when receiving PBCH, need to satisfy: the subframe that terminal receives the downlink reference signal that is used for tracking is different from the subframe that receives PBCH, and/or, the PRB that terminal receives the downlink reference signal that is used for tracking is different from the PRB that reception PBCH uses, perhaps,

Terminal receives for the subframe of the CRS that follows the tracks of different from the subframe that receives PBCH, and/or the PRB that terminal receives the CRS that is used for tracking is different from the PRB that receives PBCH.

preferably, when any one in adopting above-mentioned seven kinds of methods receives PBCH, particularly adopting above-mentioned the first, the second, or during Lung biopsy, be on whole RE of terminal in the PBCH transfer resource, or in the PBCH transfer resource except the downlink reference signal of be used for following the tracks of other RE RE corresponding on the antenna port at this is used for following the tracks of downlink reference signal transmission place, or in the PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0, when receiving PBCH, need to satisfy: in PBCH transmission subframe and/or time slot, the OFDM symbol at PBCH transmission place is different from the OFDM symbol at DRS transmission place.

When terminal adopts P antenna port transmit diversity to receive PBCH:

Terminal comprises the OFDM symbol for the downlink reference signal of following the tracks of and/or the downlink reference signal that is used for demodulation corresponding RE on the antenna port at its transmission place in the PBCH transfer resource, vacate the available RE of part and do not receive PBCH, be the integral multiple of P so that terminal when adopting P antenna port transmit diversity to receive PBCH, is used for transmitting the number of the RE of PBCH on this OFDM symbol; Wherein, P=2 or 4, this available RE be in the PBCH transfer resource on this OFDM symbol except the downlink reference signal of be used for following the tracks of and/or the downlink reference signal that is used for demodulation other RE RE corresponding on the antenna port at its transmission place.Preferably, the OFDM symbol for the integral multiple that is P of the available RE number on above-mentioned OFDM symbol can be mapped in PBCH on all the available RE on this OFDM, does not namely vacate the available RE of part or the available RE number determining to vacate is 0.

preferably, above-mentionedly vacate the method that the available RE of part do not carry out the PBCH resource mapping and be applicable to adopt the second, the third, the 4th kind, the 5th kind, when the 6th kind or the 7th kind of method receive PBCH, be terminal is removed correspondence on the antenna port that transmits the place for the downlink reference signal of following the tracks of at this downlink reference signal that is used for following the tracks of in the PBCH transfer resource RE, and/or the downlink reference signal that is used for demodulation is used for other RE outside RE corresponding on the antenna port at downlink reference signal transmission place of demodulation at this, when receiving PBCH, perhaps, terminal is removed the RE of CRS correspondence on antenna port 0 in the PBCH transfer resource, and/or DRS is on other RE outside the RE of correspondence on K the antenna port at this DRS transmission place, when receiving PBCH.

Accordingly, adopting Lung biopsy, be terminal in the PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0, when receiving PBCH, the coded-bit that PBCH carries under conventional CP is 48*[46-A] bit, the coded-bit that carries under CP in expansion is 48*[44-A] bit, wherein, A is the number of the RE that vacates; Perhaps,

Adopting the 6th kind of method, be terminal in the PBCH transfer resource except DRS on other RE the RE of correspondence on K the antenna port at this DRS transmission place, when receiving PBCH, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at this DRS transmission place in the PBCH transfer resource; Perhaps,

Adopting the 7th kind of method, be that terminal is transmitted RE corresponding on K the antenna port at place and CRS on other RE RE corresponding on antenna port 0 at this DRS except DRS in the PBCH transfer resource, when receiving PBCH, the coded-bit that PBCH carries under conventional CP is 48*[46-B-A] bit, the coded-bit that carries under expansion CP is 48*[44-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at this DRS transmission place in the PBCH transfer resource.

The value of above-mentioned K is 1 or 2 or 4, and when described K=1, K the antenna port that DRS transmits the place is antenna port 5 or antenna port 7 or antenna port 8; Greater than 1 the time, K the antenna port at DRS transmission place is that antenna port 7 arrives antenna port K+6 as K.

When the downlink reference signal that is used for demodulation PBCH was DRS, in step 60, terminal received PBCH, the time, the CRC of PBCH not carried out descrambling, the antenna port number that is used for the DRS transmission place of demodulation PBCH is the antenna port number of making an appointment; Perhaps,

Terminal is transmitted the antenna port number at place and the corresponding relation of scramble sequence according to the DRS that is used for demodulation PBCH that sets, determine that current transmission is used for scramble sequence corresponding to antenna port number that the DRS of demodulation PBCH uses, and use this scramble sequence to carry out descrambling to the CRC of PBCH, scramble sequence represents the antenna port number for the DRS transmission place of demodulation PBCH.

As another kind of situation, when being used for the CRS of demodulation, in step 60, terminal receives PBCH, specifically can adopt any one in following two kinds of methods when the downlink reference signal that is used for the described PBCH of demodulation:

The first, in the PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0, antenna port 1, antenna port 2 and antenna port 3, receive PBCH;

The second, transmit RE corresponding on the antenna port at place and CRS at DRS except DRS in the PBCH transfer resource on other RE RE corresponding on antenna port 0, antenna port 1, antenna port 2 and antenna port 3, receive PBCH.

When adopting above-mentioned second method, be that terminal is transmitted RE corresponding on the antenna port at place and CRS other RE RE corresponding on antenna port 0, antenna port 1, antenna port 2 and antenna port 3 at this DRS except DRS in the PBCH transfer resource, when receiving PBCH, the coded-bit that PBCH carries under conventional CP is 48*[40-B] bit, the coded-bit that carries under expansion CP is 48*[36-B] bit, wherein, B is the number that in the PBCH transfer resource, DRS transmits RE corresponding on the antenna port at place at this DRS.

Terminal receives the CRS that is used for demodulation PBCH, and concrete grammar can be as follows:

receive the CRS that is used for demodulation PBCH in PBCH transmission subframe, receive the CRS that is used for demodulation PBCH on the PRB that perhaps PBCH transmission RE is corresponding in PBCH transmission subframe, perhaps receive the CRS that is used for demodulation PBCH in the time slot at the transmission of the PBCH in PBCH transmission subframe place, receive the CRS that is used for demodulation PBCH in the PRB that perhaps in the time slot of the transmission PBCH in PBCH transmission subframe, PBCH transmission RE is corresponding, perhaps receive the CRS that is used for demodulation PBCH on the OFDM symbol that is used for transmission PBCH in PBCH transmission subframe, perhaps transmit at PBCH the CRS that receives on the OFDM symbol that is used for transmission PBCH in the PRB that in subframe, PBCH transmission RE is corresponding for demodulation PBCH.

Embodiment one:

Step 1: the base station is in PBCH transmission subframe, RE based on correspondence on the antenna port that transmits the place for the downlink reference signal of following the tracks of at this downlink reference signal that is used for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation is used for corresponding RE on the antenna port at downlink reference signal transmission place of demodulation at this, and PBCH is carried out resource mapping; Send PBCH according to the resource mapping result; And,

The base station sends the downlink reference signal that is used for demodulation PBCH, and the downlink reference signal that is used for demodulation PBCH is DRS;

Step 2: terminal is based on the RE of correspondence on the antenna port that transmits the place for the downlink reference signal of following the tracks of at this downlink reference signal that is used for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation is used for corresponding RE on the antenna port at downlink reference signal transmission place of demodulation at this, receives PBCH; And,

Terminal receives the downlink reference signal that is used for demodulation PBCH, according to this downlink reference signal, PHCH is carried out demodulation.The downlink reference signal that is used for demodulation PBCH is DRS.

Wherein, the downlink reference signal that is used for following the tracks of comprises that at least for the CRS that follows the tracks of, the downlink reference signal that is used for demodulation comprises DRS at least.

Embodiment two:

The base station sends the downlink reference signal that is used for demodulation PBCH, and the downlink reference signal that is used for demodulation PBCH is CRS;

Terminal receives the downlink reference signal that is used for demodulation PBCH, according to this downlink reference signal, PHCH is carried out demodulation.The downlink reference signal that is used for demodulation PBCH is CRS.

Referring to Fig. 9, the embodiment of the present invention also provides a kind of base station, and this base station comprises:

Resource mapping unit 90, be used in PBCH transmission subframe, based on corresponding Resource Unit RE on the antenna port that transmits the place for the downlink reference signal of following the tracks of at described downlink reference signal for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation corresponding RE on the antenna port at described downlink reference signal transmission place for demodulation, described PBCH is carried out resource mapping; Wherein, described downlink reference signal for following the tracks of comprises that at least described downlink reference signal for demodulation comprises downlink user DRS (Dedicated Reference Signal) DRS at least for the exclusive reference signal CRS in residential quarter that follows the tracks of;

Transmitting element 91 is used for sending described PBCH according to the resource mapping result.

Further, described transmitting element 91 also is used for:

Send the downlink reference signal that is used for demodulation PBCH, described downlink reference signal for demodulation PBCH is DRS or the CRS that is used for demodulation.

Further, when described downlink reference signal for demodulation PBCH was DRS, described resource mapping unit 90 was used for:

Described PBCH is mapped on whole RE in described PBCH transfer resource; Perhaps,

Described PBCH is mapped in described PBCH transfer resource except the downlink reference signal that is used for following the tracks of other RE RE corresponding on the antenna port at described downlink reference signal transmission place for following the tracks of; Perhaps,

Described PBCH is mapped in described PBCH transfer resource except the downlink reference signal that is used for demodulation other RE RE corresponding on the antenna port at described downlink reference signal transmission place for demodulation; Perhaps,

The downlink reference signal that is mapped in described PBCH transfer resource except the downlink reference signal that is used for demodulation described PBCH at RE corresponding on the antenna port at described downlink reference signal transmission place for demodulation and is used for following the tracks of other RE RE corresponding on the antenna port at described downlink reference signal transmission place for following the tracks of; Perhaps,

Described PBCH is mapped in described PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0; Perhaps,

Described PBCH is mapped on other RE that transmit at described DRS except DRS in described PBCH transfer resource RE corresponding on K the antenna port at place; Perhaps,

Described PBCH is mapped to transmits RE corresponding on K the antenna port at place and CRS in described PBCH transfer resource at described DRS except DRS on other RE RE corresponding on antenna port 0.

Further, in the time of on the whole RE in described resource mapping unit 90 is mapped to PBCH described PBCH transfer resource, the coded-bit that PBCH carries under regular circulation prefix CP and expansion CP is 2304 bits; Perhaps,

In described resource mapping unit 90 is mapped to PBCH described PBCH transfer resource except CRS on antenna port 0 on other RE corresponding RE the time, the coded-bit that PBCH carries under conventional CP is 2208 bits, and the coded-bit that carries under expansion CP is 2112 bits; Perhaps,

In the time of on other RE in described resource mapping unit 90 is mapped to PBCH described PBCH transfer resource except the RE of DRS correspondence on K the antenna port at described DRS transmission place, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B] bit, wherein, B is the number of DRS corresponding RE on K the antenna port at described DRS transmission place in the PBCH transfer resource; Perhaps,

In described resource mapping unit 90 is mapped to PBCH described PBCH transfer resource except DRS on other RE the RE of RE corresponding on K the antenna port at described DRS transmission place and CRS correspondence on antenna port 0 time, the coded-bit that PBCH carries under conventional CP is 48*[46-B] bit, the coded-bit that carries under expansion CP is 48*[44-B] bit, wherein, B is the number of DRS corresponding RE on K the antenna port at described DRS transmission place in the PBCH transfer resource.

Further, when described transmitting element sends described PBCH according to the resource mapping result, particularly on the whole RE in described resource mapping unit 90 is mapped to PBCH described PBCH transfer resource, or in described PBCH transfer resource except the downlink reference signal that is used for demodulation other RE RE corresponding on the antenna port at described downlink reference signal transmission place for demodulation, or in described PBCH transfer resource on other RE except the RE of DRS correspondence on K the antenna port at described DRS transmission place the time:

Described transmitting element 91 sends for the subframe of the downlink reference signal of following the tracks of different from the subframe that sends described PBCH, and/or the Physical Resource Block PRB that described transmitting element 91 sends the downlink reference signal that is used for tracking is different from the PRB that sends described PBCH; Perhaps,

Described transmitting element 91 sends for the subframe of the CRS that follows the tracks of different from the subframe that sends described PBCH, and/or the PRB that described transmitting element 91 sends the CRS that is used for tracking is different from the PRB that sends described PBCH.

Further, when described transmitting element sends described PBCH according to the resource mapping result, particularly on the whole RE in described resource mapping unit 90 is mapped to described PBCH transfer resource with described PBCH, or in described PBCH transfer resource except the downlink reference signal of be used for following the tracks of other RE RE corresponding on the antenna port at described downlink reference signal transmission place for following the tracks of, or in described PBCH transfer resource on other RE except the RE of CRS correspondence on antenna port 0 time:

In PBCH transmission subframe and/or time slot, the orthogonal frequency division multiplex OFDM symbol at described PBCH transmission place is different with the OFDM symbol that DRS transmits the place.

Further, when described transmitting element 91 adopts P the described PBCH of antenna port transmit diversity transmission:

Described resource mapping unit 90 comprise in described PBCH transfer resource described for following the tracks of downlink reference signal and/or the OFDM symbol of the downlink reference signal that is used for demodulation corresponding RE on the antenna port at its transmission place, vacating the available RE of part and do not carry out the PBCH resource mapping, is the integral multiple of P so that be used for the number of the RE of transmission PBCH on described OFDM symbol; Wherein, P=2 or 4, described available RE be described in the PBCH transfer resource on the OFDM symbol except described downlink reference signal and/or the downlink reference signal that is used for demodulation other RE RE corresponding on the antenna port at its transmission place for following the tracks of.

preferably, the above-mentioned method of vacating the available RE of part is applicable to when described resource mapping unit 90, described PBCH is mapped in described PBCH transfer resource except the downlink reference signal that is used for following the tracks of corresponding RE on the antenna port at described downlink reference signal transmission place for following the tracks of, and/or the downlink reference signal that is used for demodulation is on the antenna port at described downlink reference signal transmission place for demodulation on other RE outside corresponding RE the time, perhaps, in described resource mapping unit is mapped to described PBCH transfer resource with described PBCH except CRS corresponding RE on antenna port 0, and/or on other RE outside the RE of DRS correspondence on K the antenna port at described DRS transmission place the time.

Further, in described resource mapping unit 90 is mapped to PBCH described PBCH transfer resource except CRS on antenna port 0 on other RE corresponding RE the time, the coded-bit that PBCH carries under conventional CP is 48*[46-A] bit, the coded-bit that carries under expansion CP is 48*[44-A] bit, wherein, A is the number of the RE that vacates; Perhaps,

In the time of on other RE in described resource mapping unit 90 is mapped to PBCH described PBCH transfer resource except the RE of DRS correspondence on K the antenna port at described DRS transmission place, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at described DRS transmission place in the PBCH transfer resource; Perhaps,

In described resource mapping unit 90 is mapped to PBCH described PBCH transfer resource except DRS on other RE the RE of RE corresponding on K the antenna port at described DRS transmission place and CRS correspondence on antenna port 0 time, the coded-bit that PBCH carries under conventional CP is 48*[46-B-A] bit, the coded-bit that carries under expansion CP is 48*[44-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at described DRS transmission place in the PBCH transfer resource.

Further, the value of described K is 1 or 2 or 4, and when described K=1, K the antenna port that described DRS transmits the place is antenna port 5 or antenna port 7 or antenna port 8; Perhaps, greater than 1 the time, K the antenna port at described DRS transmission place is that antenna port 7 arrives antenna port K+6 as described K.

Further, when described downlink reference signal for demodulation PBCH was DRS, described transmitting element 91 also was used for:

The cyclic redundancy check (CRC) of described PBCH do not carried out scrambling, the antenna port number that described DRS for demodulation PBCH transmits the place is the antenna port number of making an appointment; Perhaps,

According to the corresponding relation of the antenna port number at the DRS transmission place that is used for demodulation PBCH of setting and scramble sequence, the CRC of described PBCH is carried out scrambling, described scramble sequence represents the described antenna port number that transmits the place for the DRS of demodulation PBCH.

Further, described downlink reference signal for following the tracks of also comprises: one or more combinations of location reference signals PRS, channel state information reference signals CSI-RS.

Further, when being used for the CRS of demodulation, described resource mapping unit 90 is used for when described downlink reference signal for the described PBCH of demodulation:

Described PBCH is mapped in described PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0, antenna port 1, antenna port 2 and antenna port 3; Perhaps,

Described PBCH is mapped to transmits RE corresponding on the antenna port at place and CRS in described PBCH transfer resource at described DRS except DRS on other RE RE corresponding on antenna port 0, antenna port 1, antenna port 2 and antenna port 3.

Further, in described resource mapping unit 90 is mapped to PBCH described PBCH transfer resource except DRS at RE corresponding on the antenna port at described DRS transmission place and CRS on antenna port 0, antenna port 1, antenna port 2 and antenna port 3 during other RE corresponding RE, the coded-bit that PBCH carries under conventional CP is 48*[40-B] bit, the coded-bit that carries under expansion CP is 48*[36-B] bit, wherein, B is the number of DRS corresponding RE on the antenna port at described DRS transmission place in described PBCH transfer resource.

Further, described transmitting element 91 is used for:

send the CRS that is used for demodulation PBCH in described PBCH transmission subframe, send the CRS that is used for demodulation PBCH on the PRB that perhaps PBCH transmission RE is corresponding in described PBCH transmission subframe, perhaps send the CRS that is used for demodulation PBCH in the time slot at the PBCH transmission place in described PBCH transmission subframe, send the CRS that is used for demodulation PBCH in the PRB that perhaps in the time slot of the transmission PBCH in described PBCH transmission subframe, PBCH transmission RE is corresponding, perhaps send the CRS that is used for demodulation PBCH on the OFDM symbol that is used for transmission PBCH in described PBCH transmission subframe, perhaps transmit at described PBCH the CRS that sends on the OFDM symbol that is used for transmission PBCH in the PRB that in subframe, PBCH transmission RE is corresponding for demodulation PBCH.

Referring to Figure 10, the embodiment of the present invention provides a kind of terminal, and this terminal comprises:

Receiving element 101, corresponding Resource Unit RE on the antenna port that transmits the place for the downlink reference signal of following the tracks of at described downlink reference signal for following the tracks of that is used for comprising based on the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation corresponding RE on the antenna port at described downlink reference signal transmission place for demodulation, receive PBCH; Wherein, described downlink reference signal for following the tracks of comprises that at least described downlink reference signal for demodulation comprises downlink user DRS (Dedicated Reference Signal) DRS at least for the exclusive reference signal CRS in residential quarter that follows the tracks of;

Acquiring unit 102 is used for obtaining carrier information according to the PBCH that receives.

Further, described receiving element 101 also is used for:

Receive the downlink reference signal that is used for demodulation PBCH, described downlink reference signal for demodulation PBCH is DRS or the CRS that is used for demodulation.

Further, when described downlink reference signal for demodulation PBCH was DRS, described receiving element 101 was used for:

On whole RE in described PBCH transfer resource, receive described PBCH; Perhaps,

Except the downlink reference signal of be used for following the tracks of other RE RE corresponding on the antenna port at described downlink reference signal transmission place for following the tracks of, receive described PBCH in described PBCH transfer resource; Perhaps,

Except the downlink reference signal that is used for demodulation other RE RE corresponding on the antenna port at described downlink reference signal transmission place for demodulation, receive described PBCH in described PBCH transfer resource; Perhaps,

In described PBCH transfer resource except the downlink reference signal that is used for demodulation at RE corresponding on the antenna port at described downlink reference signal transmission place for demodulation and be used for the downlink reference signal followed the tracks of other RE RE corresponding on the antenna port at described downlink reference signal transmission place for following the tracks of, receive described PBCH; Perhaps,

In described PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0, receive described PBCH; Perhaps,

Transmit at described DRS except DRS in described PBCH transfer resource on other RE RE corresponding on K the antenna port at place, receive described PBCH; Perhaps,

Transmit RE corresponding on K the antenna port at place and CRS at described DRS except DRS in described PBCH transfer resource on other RE RE corresponding on antenna port 0, receive described PBCH.

Further, on whole RE of described receiving element 101 in described PBCH transfer resource, when receiving described PBCH, the coded-bit that PBCH carries under regular circulation prefix CP and expansion CP is 2304 bits; Perhaps,

Described receiving element 101 in described PBCH transfer resource except CRS on antenna port 0 on other RE corresponding RE the time, receive described PBCH, the coded-bit that PBCH carries under conventional CP is 2208 bits, and the coded-bit that carries under expansion CP is 2112 bits; Perhaps,

Described receiving element 101 in described PBCH transfer resource except DRS on other RE the RE of correspondence on K the antenna port at described DRS transmission place, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B] bit, wherein, B is the number of DRS corresponding RE on K the antenna port at described DRS transmission place in the PBCH transfer resource; Perhaps,

Described receiving element 101 transmits RE corresponding on K the antenna port at place and CRS on other RE RE corresponding on antenna port 0 at described DRS except DRS in described PBCH transfer resource, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP is 48*[46-B] bit, the coded-bit that carries under expansion CP is 48*[44-B] bit, wherein, B is the number of DRS corresponding RE on K the antenna port at described DRS transmission place in the PBCH transfer resource.

Further, when described receiving element 101 receives described PBCH, particularly on the whole RE in described PBCH transfer resource, or in described PBCH transfer resource except the downlink reference signal that is used for demodulation other RE RE corresponding on the antenna port at described downlink reference signal transmission place for demodulation, or in described PBCH transfer resource except DRS on other RE RE corresponding on K the antenna port at described DRS transmission place, during the described PBCH of reception:

The subframe that described receiving element 101 receives the downlink reference signal that is used for tracking is different from the subframe that receives described PBCH, and/or the Physical Resource Block PRB that described receiving element receives the downlink reference signal that is used for tracking is different from the PRB that the described PBCH of reception uses; Perhaps,

Described receiving element 101 receives for the subframe of the CRS that follows the tracks of different from the subframe that receives described PBCH, and/or the PRB that described receiving element receives the CRS that is used for tracking is different from the PRB that receives described PBCH.

Further, when described receiving element 101 receives described PBCH, particularly on the whole RE in described PBCH transfer resource, or in described PBCH transfer resource except the downlink reference signal of be used for following the tracks of other RE RE corresponding on the antenna port at described downlink reference signal transmission place for following the tracks of, or in described PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0, when receiving described PBCH:

Further, when described receiving element 101 adopts P antenna port transmit diversity to receive described PBCH:

Described receiving element 101 comprise in described PBCH transfer resource described for following the tracks of downlink reference signal and/or the OFDM symbol of the downlink reference signal that is used for demodulation corresponding RE on the antenna port at its transmission place, vacate the available RE of part and do not receive PBCH, be the integral multiple of P so that described receiving element when adopting P antenna port transmit diversity to receive described PBCH, is used for transmitting the number of the RE of PBCH on described OFDM symbol; Wherein, P=2 or 4, described available RE be described in the PBCH transfer resource on the OFDM symbol except described downlink reference signal and/or the downlink reference signal that is used for demodulation other RE RE corresponding on the antenna port at its transmission place for following the tracks of.

preferably, the above-mentioned method of vacating the available RE of part is applicable to work as described receiving element 101 removes correspondence on the antenna port that transmits the place for the downlink reference signal of following the tracks of at described downlink reference signal for following the tracks of in described PBCH transfer resource RE, and/or the downlink reference signal that is used for demodulation other RE outside RE corresponding on the antenna port at described downlink reference signal transmission place for demodulation, when receiving described PBCH, perhaps, described terminal is removed the RE of CRS correspondence on antenna port 0 in described PBCH transfer resource, and/or DRS is on other RE outside RE corresponding on K the antenna port at described DRS transmission place, when receiving described PBCH.

Further, described receiving element 101 in described PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP is 48*[46-A] bit, the coded-bit that carries under expansion CP is 48*[44-A] bit, wherein, A is the number of the RE that vacates; Perhaps,

Described receiving element 101 in described PBCH transfer resource except DRS on other RE the RE of correspondence on K the antenna port at described DRS transmission place, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at described DRS transmission place in the PBCH transfer resource; Perhaps,

Described receiving element 101 transmits RE corresponding on K the antenna port at place and CRS on other RE RE corresponding on antenna port 0 at described DRS except DRS in described PBCH transfer resource, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP is 48*[46-B-A] bit, the coded-bit that carries under expansion CP is 48*[44-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at described DRS transmission place in the PBCH transfer resource.

The cyclic redundancy check (CRC) of described PBCH do not carried out descrambling, the antenna port number that described DRS for demodulation PBCH transmits the place is the antenna port number of making an appointment; Perhaps,

According to the corresponding relation of the antenna port number at the DRS transmission place that is used for demodulation PBCH of setting and scramble sequence, the CRC of described PBCH is carried out descrambling, described scramble sequence represents the described antenna port number that transmits the place for the DRS of demodulation PBCH.

Further, when being used for the CRS of demodulation, described receiving element 101 is used for when described downlink reference signal for the described PBCH of demodulation:

In described PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0, antenna port 1, antenna port 2 and antenna port 3, receive described PBCH; Perhaps,

Transmit RE corresponding on the antenna port at place and CRS at described DRS except DRS in described PBCH transfer resource on other RE RE corresponding on antenna port 0, antenna port 1, antenna port 2 and antenna port 3, receive described PBCH.

Further, described receiving element 101 transmits RE corresponding on the antenna port at place and CRS other RE RE corresponding on antenna port 0, antenna port 1, antenna port 2 and antenna port 3 at described DRS except DRS in described PBCH transfer resource, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP is 48*[40-B] bit, the coded-bit that carries under expansion CP is 48*[36-B] bit, wherein, B is the number of DRS corresponding RE on the antenna port at described DRS transmission place in described PBCH transfer resource.

Further, described receiving element 101 is used for:

receive the CRS that is used for demodulation PBCH in described PBCH transmission subframe, receive the CRS that is used for demodulation PBCH on the PRB that perhaps PBCH transmission RE is corresponding in described PBCH transmission subframe, perhaps receive the CRS that is used for demodulation PBCH in the time slot at the PBCH transmission place in described PBCH transmission subframe, receive the CRS that is used for demodulation PBCH in the PRB that perhaps in the time slot of the transmission PBCH in described PBCH transmission subframe, PBCH transmission RE is corresponding, perhaps receive the CRS that is used for demodulation PBCH on the OFDM symbol that is used for transmission PBCH in described PBCH transmission subframe, perhaps transmit at described PBCH the CRS that receives on the OFDM symbol that is used for transmission PBCH in the PRB that in subframe, PBCH transmission RE is corresponding for demodulation PBCH.

To sum up, beneficial effect of the present invention comprises:

In the scheme that the embodiment of the present invention provides, the base station is in PBCH transmission subframe, RE based on correspondence on the antenna port that transmits the place for the downlink reference signal of following the tracks of at this downlink reference signal that is used for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation is used for corresponding RE on the antenna port at downlink reference signal transmission place of demodulation at this, PBCH is carried out resource mapping, and send PBCH according to the resource mapping result.As seen, be used for the downlink reference signal of following the tracks of and/or the RE that is used for correspondence on the downlink reference signal antenna port of demodulation on the new carrier type of this programme basis when PBCH is carried out resource mapping, PBCH is carried out more rational resource mapping, the PBCH that makes this scheme can be applied on the NCT carrier wave transmits, to improve resource utilization and PBCH transmission performance.The present invention is that reference is described according to flow chart and/or the block diagram of method, equipment (system) and the computer program of the embodiment of the present invention.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce to be used for the device of realizing in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.

These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.

These computer program instructions also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby be provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame in the instruction of carrying out on computer or other programmable devices.

Although described the preferred embodiments of the present invention, in a single day those skilled in the art get the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.

Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of claim of the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.

Claims

1. the transmission method of a Physical Broadcast Channel PBCH, is characterized in that, the method comprises:

2. the method for claim 1, is characterized in that, also comprises, described base station sends the downlink reference signal that is used for demodulation PBCH, and described downlink reference signal for demodulation PBCH is DRS or the CRS that is used for demodulation.

3. method as claimed in claim 2, it is characterized in that, when described downlink reference signal for demodulation PBCH is DRS, described base station is based on corresponding RE on the antenna port that transmits the place for the downlink reference signal of following the tracks of at described downlink reference signal for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation corresponding RE on the antenna port at described downlink reference signal transmission place for demodulation, described PBCH is carried out resource mapping, specifically comprises:

4. method as claimed in claim 3, is characterized in that, when in the base station, PBCH being mapped on the whole RE in described PBCH transfer resource, the coded-bit that PBCH carries under regular circulation prefix CP and expansion CP is 2304 bits; Perhaps,

In the base station, PBCH is mapped in described PBCH transfer resource except CRS on antenna port 0 on other RE corresponding RE the time, the coded-bit that PBCH carries under conventional CP is 2208 bits, and the coded-bit that carries under expansion CP is 2112 bits; Perhaps,

When in the base station, PBCH being mapped in described PBCH transfer resource on other RE except the RE of DRS correspondence on K the antenna port at described DRS transmission place, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B] bit, wherein, B is the number of DRS corresponding RE on K the antenna port at described DRS transmission place in the PBCH transfer resource; Perhaps,

When in the base station, PBCH being mapped on other RE the RE that transmits RE corresponding on K the antenna port at place and CRS correspondence on antenna port 0 in described PBCH transfer resource except DRS at described DRS, the coded-bit that PBCH carries under conventional CP is 48*[46-B] bit, the coded-bit that carries under expansion CP is 48*[44-B] bit, wherein, B is the number of DRS corresponding RE on K the antenna port at described DRS transmission place in the PBCH transfer resource.

5. method as claimed in claim 3, is characterized in that, described base station sends described PBCH according to the resource mapping result, further comprises:

Described base station sends for the subframe of the downlink reference signal of following the tracks of different from the subframe that sends described PBCH, and/or the Physical Resource Block PRB that described base station sends the downlink reference signal that is used for tracking is different from the PRB that sends described PBCH; Perhaps,

Described base station sends for the subframe of the CRS that follows the tracks of different from the subframe that sends described PBCH, and/or the PRB that described base station sends the CRS that is used for tracking is different from the PRB that sends described PBCH.

6. method as claimed in claim 3, is characterized in that, described base station sends described PBCH according to the resource mapping result, further comprises:

7. method as claimed in claim 3, is characterized in that, when P the described PBCH of antenna port transmit diversity transmission adopted in described base station, resource mapping was carried out to described PBCH in described base station, further comprises:

Comprise in described PBCH transfer resource described for following the tracks of downlink reference signal and/or the OFDM symbol of the downlink reference signal that is used for demodulation corresponding RE on the antenna port at its transmission place, vacating the available RE of part and do not carry out the PBCH resource mapping, is the integral multiple of P so that be used for the number of the RE of transmission PBCH on described OFDM symbol; Wherein, P=2 or 4, described available RE be described in the PBCH transfer resource on the OFDM symbol except described downlink reference signal and/or the downlink reference signal that is used for demodulation other RE RE corresponding on the antenna port at its transmission place for following the tracks of.

8. method as claimed in claim 7, it is characterized in that, in the base station, PBCH is mapped in described PBCH transfer resource except CRS on antenna port 0 on other RE corresponding RE the time, the coded-bit that PBCH carries under conventional CP is 48*[46-A] bit, the coded-bit that carries under expansion CP is 48*[44-A] bit, wherein, A is the number of the RE that vacates; Perhaps,

When in the base station, PBCH being mapped in described PBCH transfer resource on other RE except the RE of DRS correspondence on K the antenna port at described DRS transmission place, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at described DRS transmission place in the PBCH transfer resource; Perhaps,

When in the base station, PBCH being mapped on other RE the RE that transmits RE corresponding on K the antenna port at place and CRS correspondence on antenna port 0 in described PBCH transfer resource except DRS at described DRS, the coded-bit that PBCH carries under conventional CP is 48*[46-B-A] bit, the coded-bit that carries under expansion CP is 48*[44-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at described DRS transmission place in the PBCH transfer resource.

9. as arbitrary described method in claim 3 ~ 8, it is characterized in that, the value of described K is 1 or 2 or 4, and when described K=1, K the antenna port that described DRS transmits the place is antenna port 5 or antenna port 7 or antenna port 8; Perhaps, greater than 1 the time, K the antenna port at described DRS transmission place is that antenna port 7 arrives antenna port K+6 as described K.

10. as arbitrary described method in claim 2 ~ 8, it is characterized in that, when described downlink reference signal for demodulation PBCH was DRS, described base station sent described PBCH according to the resource mapping result, further comprises:

Scrambling is not carried out to the cyclic redundancy check (CRC) of described PBCH in described base station, and the antenna port number that described DRS for demodulation PBCH transmits the place is the antenna port number of making an appointment; Perhaps,

Described base station is carried out scrambling according to the corresponding relation of the antenna port number at the DRS transmission place that is used for demodulation PBCH of setting and scramble sequence to the CRC of described PBCH, and described scramble sequence represents the described antenna port number that transmits the place for the DRS of demodulation PBCH.

11. as arbitrary described method in claim 1 ~ 8, it is characterized in that, described downlink reference signal for following the tracks of also comprises: one or more combinations of location reference signals PRS, channel state information reference signals CSI-RS.

12. method as claimed in claim 2, it is characterized in that, when described downlink reference signal for the described PBCH of demodulation is when being used for the CRS of demodulation, described base station is based on corresponding RE on the antenna port that transmits the place for the downlink reference signal of following the tracks of at described downlink reference signal for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation corresponding RE on the antenna port at described downlink reference signal transmission place for demodulation, described PBCH is carried out resource mapping, specifically comprises:

13. method as claimed in claim 12, it is characterized in that, in the base station, PBCH is mapped in described PBCH transfer resource except DRS corresponding RE on the antenna port at described DRS transmission place, and CRS is at antenna port 0, antenna port 1, during other RE on antenna port 2 and antenna port 3 outside corresponding RE, the coded-bit that PBCH carries under conventional CP is 48*[40-B] bit, the coded-bit that carries under expansion CP is 48*[36-B] bit, wherein, B is the number of DRS corresponding RE on the antenna port at described DRS transmission place in described PBCH transfer resource.

14. method as described in claim 12 or 13 is characterized in that, described base station sends the CRS that is used for demodulation PBCH, specifically comprises:

15. the transmission method of a Physical Broadcast Channel PBCH is characterized in that, the method comprises:

16. method as claimed in claim 15 is characterized in that, also comprises, described terminal receives the downlink reference signal that is used for demodulation PBCH, and described downlink reference signal for demodulation PBCH is DRS or the CRS that is used for demodulation.

17. method as claimed in claim 16, it is characterized in that, when described downlink reference signal for demodulation PBCH is DRS, described terminal is based on corresponding Resource Unit RE on the antenna port that transmits the place for the downlink reference signal of following the tracks of at described downlink reference signal for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation corresponding RE on the antenna port at described downlink reference signal transmission place for demodulation, receive PBCH, specifically comprise:

18. method as claimed in claim 17 is characterized in that, on whole RE of described terminal in described PBCH transfer resource, when receiving described PBCH, the coded-bit that PBCH carries under regular circulation prefix CP and expansion CP is 2304 bits; Perhaps,

Described terminal on other RE corresponding RE the time, receives described PBCH except CRS on antenna port 0 in described PBCH transfer resource, the coded-bit that PBCH carries under conventional CP is 2208 bits, and the coded-bit that carries under expansion CP is 2112 bits; Perhaps,

Described terminal in described PBCH transfer resource except DRS on other RE the RE of correspondence on K the antenna port at described DRS transmission place, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B] bit, wherein, B is the number of DRS corresponding RE on K the antenna port at described DRS transmission place in the PBCH transfer resource; Perhaps,

Described terminal is transmitted RE corresponding on K the antenna port at place and CRS on other RE RE corresponding on antenna port 0 at described DRS except DRS in described PBCH transfer resource, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP is 48*[46-B] bit, the coded-bit that carries under expansion CP is 48*[44-B] bit, wherein, B is the number of DRS corresponding RE on K the antenna port at described DRS transmission place in the PBCH transfer resource.

19. method as claimed in claim 17 is characterized in that, when described terminal receives described PBCH, further comprises:

Described terminal receives for the subframe of the downlink reference signal of following the tracks of different from the subframe that receives described PBCH, and/or the Physical Resource Block PRB that described terminal receives the downlink reference signal that is used for tracking is different from the PRB that receives described PBCH; Perhaps,

Described terminal receives for the subframe of the CRS that follows the tracks of different from the subframe that receives described PBCH, and/or the PRB that described terminal receives the CRS that is used for tracking is different from the PRB that receives described PBCH.

20. method as claimed in claim 17 is characterized in that, when described terminal receives described PBCH, further comprises:

21. method as claimed in claim 17 is characterized in that, when described terminal adopts P antenna port transmit diversity to receive described PBCH, further comprises:

Comprise in described PBCH transfer resource described for following the tracks of downlink reference signal and/or the OFDM symbol of the downlink reference signal that is used for demodulation corresponding RE on the antenna port at its transmission place, vacating the available RE of part and do not receive PBCH, is the integral multiple of P so that be used for the number of the RE of transmission PBCH on described OFDM symbol; Wherein, P=2 or 4, described available RE be described in the PBCH transfer resource on the OFDM symbol except described downlink reference signal and/or the downlink reference signal that is used for demodulation other RE RE corresponding on the antenna port at its transmission place for following the tracks of.

22. method as claimed in claim 21, it is characterized in that, described terminal in described PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP is 48*[46-A] bit, the coded-bit that carries under CP in expansion is 48*[44-A] bit, wherein, A is the number of the RE that vacates; Perhaps,

Described terminal in described PBCH transfer resource except DRS on other RE the RE of correspondence on K the antenna port at described DRS transmission place, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at described DRS transmission place in the PBCH transfer resource; Perhaps,

Described terminal is transmitted RE corresponding on K the antenna port at place and CRS on other RE RE corresponding on antenna port 0 at described DRS except DRS in described PBCH transfer resource, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP is 48*[46-B-A] bit, the coded-bit that carries under expansion CP is 48*[44-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at described DRS transmission place in the PBCH transfer resource.

23. as arbitrary described method in claim 17 ~ 22, it is characterized in that, the value of described K is 1 or 2 or 4, when described K=1, K the antenna port that described DRS transmits the place is antenna port 5 or antenna port 7 or antenna port 8; Perhaps, greater than 1 the time, K the antenna port at described DRS transmission place is that antenna port 7 arrives antenna port K+6 as described K.

24. as arbitrary described method in claim 16 ~ 22, it is characterized in that, when described downlink reference signal for demodulation PBCH was DRS, described terminal received described PBCH, further comprises:

Described terminal is not carried out descrambling to the cyclic redundancy check (CRC) of described PBCH, and the antenna port number that described DRS for demodulation PBCH transmits the place is the antenna port number of making an appointment; Perhaps,

Described terminal is carried out descrambling according to the corresponding relation of the antenna port number at the DRS transmission place that is used for demodulation PBCH of setting and scramble sequence to the CRC of described PBCH, and described scramble sequence represents the described antenna port number that transmits the place for the DRS of demodulation PBCH.

25. as arbitrary described method in claim 15 ~ 22, it is characterized in that, described downlink reference signal for following the tracks of also comprises: one or more combinations of location reference signals PRS, channel state information reference signals CSI-RS.

26. method as claimed in claim 16, it is characterized in that, when described downlink reference signal for the described PBCH of demodulation is when being used for the CRS of demodulation, described terminal is based on corresponding Resource Unit RE on the antenna port that transmits the place for the downlink reference signal of following the tracks of at described downlink reference signal for following the tracks of that comprises in the PBCH transfer resource, and/or the downlink reference signal that is used for demodulation corresponding RE on the antenna port at described downlink reference signal transmission place for demodulation, receive described PBCH, specifically comprise:

27. method as claimed in claim 26, it is characterized in that, described terminal is removed DRS corresponding RE on the antenna port at described DRS transmission place in described PBCH transfer resource, and CRS is at antenna port 0, antenna port 1, other RE on antenna port 2 and antenna port 3 outside the RE of correspondence, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP is 48*[40-B] bit, the coded-bit that carries under expansion CP is 48*[36-B] bit, wherein, B is the number of DRS corresponding RE on the antenna port at described DRS transmission place in described PBCH transfer resource.

28. method as described in claim 26 or 27 is characterized in that, described terminal receives the CRS that is used for demodulation PBCH, specifically comprises:

29. a base station is characterized in that, this base station comprises:

30. base station as claimed in claim 29 is characterized in that, described transmitting element also is used for:

31. base station as claimed in claim 30 is characterized in that, when described downlink reference signal for demodulation PBCH was DRS, described resource mapping unit was used for:

32. base station as claimed in claim 31 is characterized in that, in the time of on the whole RE in described resource mapping unit is mapped to PBCH described PBCH transfer resource, the coded-bit that PBCH carries under regular circulation prefix CP and expansion CP is 2304 bits; Perhaps,

In described resource mapping unit is mapped to PBCH described PBCH transfer resource except CRS on antenna port 0 on other RE corresponding RE the time, the coded-bit that PBCH carries under conventional CP is 2208 bits, and the coded-bit that carries under expansion CP is 2112 bits; Perhaps,

In the time of on other RE in described resource mapping unit is mapped to PBCH described PBCH transfer resource except the RE of DRS correspondence on K the antenna port at described DRS transmission place, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B] bit, wherein, B is the number of DRS corresponding RE on K the antenna port at described DRS transmission place in the PBCH transfer resource; Perhaps,

In described resource mapping unit is mapped to PBCH described PBCH transfer resource except DRS on other RE the RE of RE corresponding on K the antenna port at described DRS transmission place and CRS correspondence on antenna port 0 time, the coded-bit that PBCH carries under conventional CP is 48*[46-B] bit, the coded-bit that carries under expansion CP is 48*[44-B] bit, wherein, B is the number of DRS corresponding RE on K the antenna port at described DRS transmission place in the PBCH transfer resource.

33. base station as claimed in claim 31, it is characterized in that, the subframe that described transmitting element sends the downlink reference signal that is used for tracking is different from the subframe that sends described PBCH, and/or the Physical Resource Block PRB that described transmitting element sends the downlink reference signal that is used for tracking is different from the PRB that sends described PBCH; Perhaps,

Described transmitting element sends for the subframe of the CRS that follows the tracks of different from the subframe that sends described PBCH, and/or the PRB that described transmitting element sends the CRS that is used for tracking is different from the PRB that sends described PBCH.

34. base station as claimed in claim 31 is characterized in that, in PBCH transmission subframe and/or time slot, the orthogonal frequency division multiplex OFDM symbol at described PBCH transmission place is different with the OFDM symbol that DRS transmits the place.

35. base station as claimed in claim 31 is characterized in that, when described transmitting element adopted P antenna port transmit diversity to transmit described PBCH, described resource mapping unit was further used for:

36. base station as claimed in claim 35, it is characterized in that, in described resource mapping unit is mapped to PBCH described PBCH transfer resource except CRS on antenna port 0 on other RE corresponding RE the time, the coded-bit that PBCH carries under conventional CP is 48*[46-A] bit, the coded-bit that carries under expansion CP is 48*[44-A] bit, wherein, A is the number of the RE that vacates; Perhaps,

In the time of on other RE in described resource mapping unit is mapped to PBCH described PBCH transfer resource except the RE of DRS correspondence on K the antenna port at described DRS transmission place, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at described DRS transmission place in the PBCH transfer resource; Perhaps,

In described resource mapping unit is mapped to PBCH described PBCH transfer resource except DRS on other RE the RE of RE corresponding on K the antenna port at described DRS transmission place and CRS correspondence on antenna port 0 time, the coded-bit that PBCH carries under conventional CP is 48*[46-B-A] bit, the coded-bit that carries under expansion CP is 48*[44-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at described DRS transmission place in the PBCH transfer resource.

37. as arbitrary described base station in claim 31 ~ 36, it is characterized in that, the value of described K is 1 or 2 or 4, when described K=1, K the antenna port that described DRS transmits the place is antenna port 5 or antenna port 7 or antenna port 8; Perhaps, greater than 1 the time, K the antenna port at described DRS transmission place is that antenna port 7 arrives antenna port K+6 as described K.

38. as arbitrary described base station in claim 30 ~ 36, it is characterized in that, when described downlink reference signal for demodulation PBCH was DRS, described transmitting element also was used for:

39. as arbitrary described base station in claim 29 ~ 36, it is characterized in that, described downlink reference signal for following the tracks of also comprises: one or more combinations of location reference signals PRS, channel state information reference signals CSI-RS.

40. base station as claimed in claim 30 is characterized in that, when being used for the CRS of demodulation, described resource mapping unit is used for when described downlink reference signal for the described PBCH of demodulation:

41. base station as claimed in claim 40, it is characterized in that, in described resource mapping unit is mapped to PBCH described PBCH transfer resource except DRS corresponding RE on the antenna port at described DRS transmission place, and CRS is at antenna port 0, antenna port 1, during other RE on antenna port 2 and antenna port 3 outside corresponding RE, the coded-bit that PBCH carries under conventional CP is 48*[40-B] bit, the coded-bit that carries under expansion CP is 48*[36-B] bit, wherein, B is the number of DRS corresponding RE on the antenna port at described DRS transmission place in described PBCH transfer resource.

42. base station as described in claim 40 or 41 is characterized in that, described transmitting element is used for:

43. a terminal is characterized in that, this terminal comprises:

44. terminal as claimed in claim 43 is characterized in that, described receiving element also is used for:

45. terminal as claimed in claim 44 is characterized in that, when described downlink reference signal for demodulation PBCH was DRS, described receiving element was used for:

46. terminal as claimed in claim 45 is characterized in that, on whole RE of described receiving element in described PBCH transfer resource, when receiving described PBCH, the coded-bit that PBCH carries under regular circulation prefix CP and expansion CP is 2304 bits; Perhaps,

Described receiving element in described PBCH transfer resource except CRS on antenna port 0 on other RE corresponding RE the time, receive described PBCH, the coded-bit that PBCH carries under conventional CP is 2208 bits, and the coded-bit that carries under expansion CP is 2112 bits; Perhaps,

Described receiving element in described PBCH transfer resource except DRS on other RE the RE of correspondence on K the antenna port at described DRS transmission place, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B] bit, wherein, B is the number of DRS corresponding RE on K the antenna port at described DRS transmission place in the PBCH transfer resource; Perhaps,

Described receiving element transmits RE corresponding on K the antenna port at place and CRS on other RE RE corresponding on antenna port 0 at described DRS except DRS in described PBCH transfer resource, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP is 48*[46-B] bit, the coded-bit that carries under expansion CP is 48*[44-B] bit, wherein, B is the number of DRS corresponding RE on K the antenna port at described DRS transmission place in the PBCH transfer resource.

47. terminal as claimed in claim 45, it is characterized in that, the subframe that described receiving element receives the downlink reference signal that is used for tracking is different from the subframe that receives described PBCH, and/or the Physical Resource Block PRB that described receiving element receives the downlink reference signal that is used for tracking is different from the PRB that receives described PBCH; Perhaps,

Described receiving element receives for the subframe of the CRS that follows the tracks of different from the subframe that receives described PBCH, and/or the PRB that described receiving element receives the CRS that is used for tracking is different from the PRB that receives described PBCH.

48. terminal as claimed in claim 45 is characterized in that, in PBCH transmission subframe and/or time slot, the orthogonal frequency division multiplex OFDM symbol at described PBCH transmission place is different with the OFDM symbol that DRS transmits the place.

49. terminal as claimed in claim 45 is characterized in that, when described receiving element adopted P antenna port transmit diversity to receive described PBCH, described receiving element was further used for:

50. terminal as claimed in claim 49, it is characterized in that, described receiving element in described PBCH transfer resource except CRS on other RE RE corresponding on antenna port 0, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP is 48*[46-A] bit, the coded-bit that carries under CP in expansion is 48*[44-A] bit, wherein, A is the number of the RE that vacates; Perhaps,

Described receiving element in described PBCH transfer resource except DRS on other RE the RE of correspondence on K the antenna port at described DRS transmission place, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP and expansion CP is 48*[48-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at described DRS transmission place in the PBCH transfer resource; Perhaps,

Described receiving element transmits RE corresponding on K the antenna port at place and CRS on other RE RE corresponding on antenna port 0 at described DRS except DRS in described PBCH transfer resource, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP is 48*[46-B-A] bit, the coded-bit that carries under expansion CP is 48*[44-B-A] bit, wherein, A is the number of the RE that vacates, and B is the number of DRS RE of correspondence on K the antenna port at described DRS transmission place in the PBCH transfer resource.

51. as arbitrary described terminal in claim 45 ~ 50, it is characterized in that, the value of described K is 1 or 2 or 4, when described K=1, K the antenna port that described DRS transmits the place is antenna port 5 or antenna port 7 or antenna port 8; Perhaps, greater than 1 the time, K the antenna port at described DRS transmission place is that antenna port 7 arrives antenna port K+6 as described K.

52. as arbitrary described terminal in claim 44 ~ 50, it is characterized in that, when described downlink reference signal for demodulation PBCH was DRS, described receiving element was used for:

53. as arbitrary described terminal in claim 43 ~ 50, it is characterized in that, described downlink reference signal for following the tracks of also comprises: one or more combinations of location reference signals PRS, channel state information reference signals CSI-RS.

54. terminal as claimed in claim 44 is characterized in that, when described downlink reference signal for the described PBCH of demodulation is that when being used for the CRS of demodulation, described receiving element is used for:

55. terminal as claimed in claim 54, it is characterized in that, described receiving element removes DRS corresponding RE on the antenna port at described DRS transmission place in described PBCH transfer resource, and CRS is at antenna port 0, antenna port 1, other RE on antenna port 2 and antenna port 3 outside the RE of correspondence, when receiving described PBCH, the coded-bit that PBCH carries under conventional CP is 48*[40-B] bit, the coded-bit that carries under expansion CP is 48*[36-B] bit, wherein, B is the number of DRS corresponding RE on the antenna port at described DRS transmission place in described PBCH transfer resource.

56. terminal as described in claim 54 or 55 is characterized in that, described receiving element is used for: