CN103369700B - The transmission method of a kind of descending reference symbol and device - Google Patents

Abstract

The invention discloses transmission method and the device of a kind of descending reference symbol.The method is: base station can be arranged in the CRS of the use on extension carrier wave flexibly and transmit port, i.e. it is configurable to the one in intrasystem system port or combination in any, it is no longer limited by the restriction of existing LTE system standard, thus ensure to extend and can realize reliable Time and Frequency Synchronization and measurement based on CRS on carrier wave, thus sophisticated systems performance.

Description

The transmission method of a kind of descending reference symbol and device

Technical field

The present invention relates to the communications field, particularly to transmission method and the device of a kind of descending reference symbol.

Background technology

In LTE-A (Long Term Evolution-Advanced, long-term evolution upgrading) system, the peak value speed of system Rate has huge raising than LTE, it is desirable to reach descending 1Gbps, up 500Mbps.If only one maximum bandwidth of use is The carrier wave of 20MHz is unable to reach peak-rate requirements.Therefore, lte-a system needs the bandwidth that terminal extension can use, Thus introduce CA (Carrier Aggregation, carrier aggregation) technology, will multiple companies under same eNB (base station) Continuous or discontinuous carrier aggregation, services for UE, the speed needed for offer simultaneously together.These carrier waves condensed together It is also called CC (component carrier, member carrier).Each community can be a member carrier, under different eNB Community (i.e. member carrier) can not be polymerized.In order to ensure that the UE of LTE can work under each carrier wave being polymerized, each carrier wave Maximum less than 20MHz.Such as, refering to as it is shown in figure 1, there are 4 carrier waves that can be polymerized under base station, base station can be simultaneously 4 Carry out data transmission with UE, to improve throughput of system on individual carrier wave.

In current LTE system, CRS (Cell-specific reference signals, community dedicated reference symbols) All transmitting in the descending sub frame of all transmission PDSCH, and CRS could support up 4 port transmission, each port provides at a physics Resource location in the block of source is referring particularly to shown in Fig. 2 A and Fig. 2 B.

As shown in Figure 2 A and 2 B, under prior art, the antenna port compound mode used in LTE system is: work as community When being configured to single antenna port transmission (being called for short single port transmission), base station uses antenna port 0 to transmit CRS；When cell configuration is During double antenna port transmission (being called for short dual-port transmission), base station uses antenna port 0 and 1 to transmit CRS；When cell configuration is four days During line cap transmission (being called for short four port transmission), base station uses antenna port 0～3 to transmit CRS.In existing LTE system, UE Time and Frequency Synchronization and measurement is carried out based on CRS.

And in LTE TDD system, there are three kinds of subframes, it is respectively as follows: sub-frame of uplink, special subframe and descending sub frame, its In, the special subframe in LTE TDD system is made up of 3 parts: DwPTS (Downlink pilot time slot, descending pilot frequency Time slot), GP (guard periold, protection interval) and UpPTS (uplink pilot time slot, uplink pilot time slot). Special subframe supports various configurations, and in different configurations, the length of 3 partial time slot is different, as shown in the table:

Table 1

Special subframe configuration ((duration of DwPTS/GP/UpPTS .)

In actual application, in order to improve resource utilization ratio further, formulation is gathered by LTE-A Rel-11 at carrier wave Assembly system introduces new carrier type, i.e. extends carrier wave, referred to as additional carrier type, or, new Carrier type), using the purpose of extension carrier wave is to strengthen system spectrum utilization rate, preferably support heterogeneous network, reduction Power consumption.

For extending the programme of work of carrier wave the most under discussion, the conclusion reached at present includes:

1) existing control signaling and/or CRS and a backward compatibility carrier wave associated working are compressed or eliminate.

2) two kinds of operative scenario are supported:

Sync carrier: extending carrier wave from the perspective of receiving terminal with legacy (traditional) carrier wave in time domain and frequency domain is all Synchronizing, UE need not extension carrier wave is carried out single Time and Frequency Synchronization process；

Asynchronous carrier wave: extend carrier wave from the perspective of receiving terminal and have one time domain and frequency domain with legacy carrier wave Fixed deviation.

Currently for the transmission method of reference marks on extension carrier wave, also there is no clear and definite technical scheme.

Summary of the invention

The embodiment of the present invention provides the transmission method of a kind of descending reference symbol, in order to solve descending reference in extension carrier wave The transmission problem of symbol.

The concrete technical scheme that the embodiment of the present invention provides is as follows:

A kind of transmission method of descending reference symbol, including:

Determine that being arranged on extension carrier wave the CRS used transmits port, and the CRS transmission port notice terminal that will determine Side, wherein, described extension carrier wave is the carrier wave that can not work alone；

By described CRS transmission port, corresponding CRS is transmitted to end side.

A kind of transmission method of descending reference symbol, including:

Determine that according to network side notice being arranged on extension carrier wave the CRS used transmits port, wherein, described extension carrier wave For the carrier wave that can not work alone；

The CRS of network side transmission is received by described CRS transmission port.

A kind of transmitting device of descending reference symbol, including:

Main control unit, for determining that being arranged on extension carrier wave the CRS used transmits port, and the CRS transmission that will determine Port notice end side；Wherein, described extension carrier wave is the carrier wave that can not work alone；

Communication unit, for transmitting corresponding CRS to end side by described CRS transmission port.

A kind of transmitting device of descending reference symbol, including:

Processing unit, for determining that according to network side notice being arranged on extension carrier wave the CRS used transmits port；Its In, described extension carrier wave is the carrier wave that can not work alone；

Communication unit, for receiving the CRS of network side transmission by described CRS transmission port.

In sum, in follow-up LTE-A Rel-11 carrier aggregation system, owing to supporting extension carrier wave, and this extension The design original intention of carrier wave is to improve frequency efficiency, reduces power consumption etc., therefore, time independent to realize carrying out extension carrier wave Frequency synchronizes and measures, then need to use custom-designed CRS transmission plan, more flexibly, efficiently and reliably to use extension to carry Ripple, The present invention gives a kind of CRS transmission plan on extension carrier wave, and base station can be arranged on extension carrier wave flexibly The CRS used transmits port, is i.e. configurable to the one in intrasystem system port or combination in any, is no longer limited by existing There is the restriction of LTE system standard, thus ensure to realize reliable Time and Frequency Synchronization and measurement based on CRS on extension carrier wave, from And sophisticated systems performance.

Accompanying drawing explanation

Fig. 1 is carrier aggregation schematic diagram in prior art；

Fig. 2 A and Fig. 2 B is CRS port schematic diagram under normal CP in prior art；

Fig. 3 is that in the embodiment of the present invention, base station realizes CRS transfer process figure on extension carrier wave；

Fig. 4 be in the embodiment of the present invention base station configure in normal descending sub frame and special subframe CRS transmission port show It is intended to；

Fig. 5 is the CRS transmission port schematic diagram that in the embodiment of the present invention, base station arranges mute state；

Fig. 6 is the CRS flow chart that in the embodiment of the present invention, terminal receives base station transmission on extension carrier wave；

Fig. 7 is base station functions structural representation in the embodiment of the present invention；

Fig. 8 is termination function structural representation in the embodiment of the present invention.

Detailed description of the invention

For the extension carrier wave formulated in LTE-A Rel-11, in the embodiment of the present invention, it is provided that a kind of at extension carrier wave The specific implementation of middle transmission descending reference symbol (e.g., CRS).

Below in conjunction with the accompanying drawings the preferred embodiment of the present invention is described in detail.

Refering to shown in Fig. 3, in the embodiment of the present invention, the flow process that base station realizes CRS transmission on extension carrier wave is as follows:

Step 300: base station determines that being arranged on extension carrier wave the CRS used transmits port, and the CRS transmission ends that will determine Mouth notice end side, wherein, this extension carrier wave is the carrier wave that can not work alone.

In the embodiment of the present invention, it is arranged on extension carrier wave the CRS used and transmits port, can be that system support uses CRS antenna port (hereinafter referred to as antenna port) in one or combination in any, and base station will use high-level signaling with Semi-static mode transmits port to the CRS of end side notice configuration.And in prior art, base station is to need not CRS transmission ends Mouth notice is to terminal, and terminal can detect voluntarily.

Wherein, when the CRS used on configuration extension carrier wave transmits port, flexible configuration antenna port group can be used Conjunction mode, is i.e. not only restricted to antenna port compound mode of the prior art.Available antenna can be predefined by management personnel Port combination mode, base station is only chosen one of predefined antenna port compound mode and is notified to end side, it is also possible to by base station Determine antenna port compound mode voluntarily, thus more CRS pattern (pattern) is provided, provide just for multiple cell networking Profit.Such as, network side, can be based on considered below: community 1 uses antenna port 0 to pass when configuring antenna port compound mode During defeated CRS, adjacent community 2 can use antenna port 1 to transmit CRS in identical frequency band, then can avoid the CRS of neighbor cell Between interfere.

Concrete, in the embodiment of the present invention, when configuring spendable antenna port compound mode, can use with lower section Method:

During single antenna port transmission: configurable use { port 0} or { port 1}；Or, configurable practical { port 0} or { end Mouth 1} or { port 2} or { port 3}；

During double antenna port transmission: configurable use { port 0, port 1} or { port 2, port 3}；Or,

Configurable use { port 0, port 1} or { port 0, port 2} or { port 0, port 3} or { port 1, port 2} Or { port 1, port 3} or { port 2, port 3}；

During triantennary port transmission: configurable use { port 0, port 1, port 2} or { port 0, port 1, port 3}； Or, { port 1, port 2, port 3}；

During four antenna port transmission: configurable use { port 1, port 2, port 3, port 4}.

Step 310: base station will be transmitted to end side accordingly by the CRS transmission port configured.

In the embodiment of the present invention, owing to being for extension carrier design CRS transmission plan, because of regardless of whether in the presence of capable Data are transmitted, and base station is required to configure CRS transmission and both can individually transmit CRS to terminal carrying out Time and Frequency Synchronization, i.e. base station Side, now terminal only need to detect CRS；Can also configuration transmission CRS descending sub frame in dispatching downlink data, i.e. base station Transmit to end side after compound with downlink data for CRS, but downlink data can not be mapped on the RE shared by CRS, now, eventually End can detect CRS, and receives downlink data according to the instruction of dispatch.

In above-described embodiment, the concrete executive mode of step 300 is as follows:

For TDD system, when configuring CRS and transmitting port, the CRS that base station can be respectively configured in special subframe transmits port Port is transmitted with the CRS in normal (commonly) descending sub frame；Wherein, owing to special subframe exists various configurations, part configuration The duration of middle DwPTS is shorter compared with the duration of normal descending sub frame, it is impossible to transmission corresponding whole of single antenna port CRS, thus then can reduce net synchronization capability, in order to solve this problem, it is also preferred that the left base station can be in the DwPTS in special subframe Configuration at least two CRS transmission port.Such as, in TDD system, define seven kinds of TDD ascending-descending subframes configurations, concrete such as table 2 Shown in, wherein D represents DL subframe, and U represents UL subframe, and S represents the special subframe of TDD system.

Table 2

(configuration of TDD ascending-descending subframes)

So, refering to shown in Fig. 4, it is assumed that special subframe have employed TDD uplink-downlink configuration 1, and wherein, DwPTS only comprises 9 OFDM (Orthogonal Frequency Division Multiplexing, OFDM) symbol, then for Normal descending sub frame, base station configuration uses antenna port 0 to transmit CRS, comprises 8 CRS in the most each Resource Block, and In DwPTS, owing to base station configuration uses antenna port 0 and antenna port 2 to transmit CRS, in the most each Resource Block, comprise 10 CRS, such that make for any one antenna port, all cannot be by corresponding whole CRS end of transmissions, but each port The CRS total number of transmission and normal descending sub frame keep approximately equal, thus ensure that the net synchronization capability of system.

Based on above-mentioned CRS port configuration mode, base station transmits port by high-level signaling to the CRS of end side notice configuration Time, can use high-level signaling directly by CRS port notice end side the most corresponding with normal subframe for each special subframe；Or Person, it would however also be possible to employ the CRS port in normal subframe is notified end side by high-level signaling, and notice end side is according to presetting Rule determines that the CRS on special subframe transmits port.Latter event is exemplified below:

When the OFDM symbol number in DwPTS in special subframe is more than 3 but is less than 10, if normal subframe is corresponding The number of CRS transmission port is N, and N ＜ 4, then the number of CRS transmission port corresponding for DwPTS during end side determines special subframe Mesh is N+1；When the OFDM symbol number in DwPTS in special subframe is only not more than 3, end side determines DwPTS in special subframe Corresponding CRS port number is 4, wherein, if desired increases CRS in the DwPTS in special subframe and transmits port number, the most preferentially The configuration preference level using antenna port 2 and antenna port 3, i.e. antenna port 2 and antenna port 3 is the highest.

On the other hand, in the embodiment of the present invention, after performing step 300, before performing step 310, base station can also be held One in the operation of row following two or combination in any (be only for example but be not limited to this):

1) base station uses high-level signaling to be arranged on extension carrier wave at the beginning of the CRS frequency offset amount and CRS code sequence used The concrete value notice end side of initial value, or, use high-level signaling will to be arranged on extension carrier wave the CRS frequency offset used Amount and CRS sequence initial value corresponding additional ID parameter notice end side.

Under prior art, in LTE Rel-8, CRS frequency offset amount (is designated asWith CRS code sequence Row initial value (is designated as $c_{\mathrm{init}}=2^{10}\·(7\·(n_s+1)+l+1)\·(2\·N_{\mathrm{ID}}^{\mathrm{cell}}+1)+2\·N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CP}})$ It is all that terminal is based at network (community ID, is designated as the cell ID detected during registrationObtain, it is not necessary to base station notifies.But, the present invention implements In example, owing to may not there is independent cell ID on extension carrier wave, therefore, in this case, base station needs CRS frequency Territory side-play amount and CRS code sequence initial value notify to end side, it is also preferred that the left base station can use high-level signaling by the CRS of configuration Frequency offset amount and CRS code sequence initial value notify to end side, and such as, base station can be notified to end side by high-level signaling Give an additional ID parameter of extension carrier wave configuration, be designated asMake terminal based on thisUse and use Rel- The method of 8 standards determines CRS frequency offset amount and CRS code sequence initial value；The most such as, base station can also by high-level signaling to End side notifies the CRS frequency offset amount to extension carrier wave configuration and the concrete value of CRS code sequence initial value.So, base station All can determine the carrier wave of carrying CRS transmission, and the CRS according to configuration according to the CRS frequency offset amount of configuration with end side Code sequence initial value determines the CRS sequence of actual transmissions.

2) base station is arranged in the CRS transmission ends being arranged to mute (mourning in silence) state on extension carrier wave to end side notice Mouthful；Wherein, RE (RE (Resource Element, the resource that port is corresponding is transmitted, at the CRS being arranged to mute state, in base station Unit) on do not transmit any information.

In the embodiment of the present invention, although the CRS that base station is notified of configuration to end side transmits port, but, in order to avoid The interference of minizone, base station also needs to part CRS therein transmission port is set to mute state, base station CRS in this section The RE that transmission port is corresponding does not carries out data transmission, does not the most carry out CRS transmission.The use sky, neighbor cell of administration community, base station Line cap 1 transmits CRS, then, in order to avoid interfering the CRS of transmission on neighbor cell, base station is by this community vacant The RE of antenna port 2 correspondence, thus reduce presence of intercell interference, e.g., refering to shown in Fig. 5, antenna port 1 is arranged to mute state (i.e. lattice filling part)

In actual application, when any one CRS transmission port (e.g., antenna port 2) is set to mute state by base station, can So that this CRS transmission port (is included normal descending sub frame and special son at all or part of descending sub frame of carrying CRS transmission DwPTS in frame) in be disposed as mute state.

Based on above-described embodiment, refering to shown in Fig. 6, in the embodiment of the present invention, terminal receives network side on extension carrier wave The flow process of the CRS of transmission is as follows:

Step 600: terminal notifies to determine to be arranged according to network side and extends the CRS transmission port used on carrier wave, wherein, This extension carrier wave is the carrier wave that can not work alone..

In the embodiment of the present invention, the CRS transmission port used on extension carrier wave can be the antenna that system support uses One in port or combination in any；Referring particularly to the associated description of step 300, do not repeat them here.

On the other hand, when performing step 600, terminal can notify according to network side, for the normal under TDD standard Descending sub frame and special subframe determine that corresponding CRS transmits port, wherein, due to the duration of the DwPTS in special subframe respectively Being shorter than the duration of normal descending sub frame, terminal can determine whether at least corresponding two the CRS transmission ends of the DwPTS in this special subframe Mouthful.

In the present embodiment, terminal can determine normal descending sub frame and special son by the high-level signaling that network side sends The CRS that frame is the most corresponding transmits port；Or, the high-level signaling sent by network side determines that normal descending sub frame is corresponding CRS transmits port, and determines that the CRS that described special subframe is corresponding transmits port according to network side notice according to preset rules, So-called preset rules refers to: when the orthogonal frequency division multiplex OFDM number of symbols in DwPTS in special subframe is more than 3 but less than 10 Time, if the number of CRS transmission port corresponding to normal subframe is N, and N ＜ 4, it is determined that in special subframe, DwPTS is corresponding The number of CRS transmission port is N+1；When the OFDM symbol number of DwPTS wind is only not more than 3 in special subframe, determine special son CRS port number corresponding for DwPTS in frame is 4.

Step 610: terminal receives the CRS of network side transmission by the CRS transmission port configured.

In the above-described embodiments, after terminal determines the CRS transmission port of configuration according to network side notice, by configuring Before CRS transmission port receives the CRS of network side transmission, the one in following any operation or combination in any can be performed (only It is not limited to this for illustrating) including:

1) terminal determines the CRS frequency offset amount of use on extension carrier wave that is arranged according to the high-level signaling that network side sends And the concrete value of CRS code sequence initial value, or, the high-level signaling sent by network side determine be arranged in extension carrier wave on The CRS frequency offset amount used and additional ID parameter corresponding to CRS code sequence initial value.

2) terminal determines that according to network side notice being arranged on extension carrier wave the CRS being arranged to mourn in silence mute state transmits Port；Wherein, terminal is transmitted at the CRS being arranged to mute state and is not carried out any information on the Resource Unit RE that port is corresponding Transmission.On the other hand, when any one CRS transmission port is defined as mute state according to network side notice by terminal, permissible Based on network side notice determine this any one CRS transmission port in all or part of descending sub frame of carrying CRS transmission all For mute state.

The specific implementation of above steps, refering to the associated description of step 300-step 310, does not repeats them here.

Refering to shown in Fig. 7, in the embodiment of the present invention, base station includes main control unit 70 and communication unit 71, wherein,

Main control unit 70, for determining that being arranged on extension carrier wave the CRS used transmits port, and passes the CRS determined Defeated port notice end side, wherein, this extension carrier wave is the carrier wave that can not work alone.

Communication unit 71, transmits corresponding CRS to end side for the CRS transmission port by configuring.

As it is shown in fig. 7, base station still further comprises dispensing unit 72, for being arranged on extension carrier wave the CRS used Transmission port, e.g., is respectively configured corresponding CRS transmission for the common normal descending sub frame under TDD standard and special subframe Port, wherein, owing to the duration of the DwPTS in special subframe is shorter than the duration of normal descending sub frame, then corresponding special subframe In DwPTS configuration at least two CRS transmission port.

Refering to shown in Fig. 8, in the embodiment of the present invention, terminal includes processing unit 80 and communication unit 81, wherein,

Processing unit 80, for determining that according to network side notice being arranged on extension carrier wave the CRS used transmits port, its In, this extension carrier wave is the carrier wave that can not work alone.

Communication unit 81, receives the CRS of network side transmission for the CRS transmission port by configuring.

In sum, in follow-up LTE-A Rel-11 carrier aggregation system, owing to supporting extension carrier wave, and this extension The design original intention of carrier wave is to improve frequency efficiency, reduces power consumption etc., therefore, time independent to realize carrying out extension carrier wave Frequency synchronizes and measures, then need to use custom-designed CRS transmission plan, more flexibly, efficiently and reliably to use extension to carry Ripple, The present invention gives a kind of CRS transmission plan on extension carrier wave, and base station can be arranged on extension carrier wave flexibly The CRS used transmits port, is i.e. configurable to the one in intrasystem system port or combination in any, is no longer limited by existing There is the restriction of LTE system standard, thus ensure to realize reliable Time and Frequency Synchronization and measurement based on CRS on extension carrier wave, from And sophisticated systems performance.

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

Claims (24)

1. the transmission method of a descending reference symbol, it is characterised in that including:

Determine that being arranged on extension carrier wave the community dedicated reference symbols CRS used transmits port, and the CRS transmission ends that will determine Mouth notice end side, wherein, described extension carrier wave is the carrier wave that can not work alone；Wherein it is determined that described CRS transmits port, Including: it is respectively configured corresponding CRS transmission for the common normal descending sub frame under TDD standard and special subframe Port；Wherein, for special subframe, the CRS that will determine transmission port notifies end side, including: notice end side is according to presetting Rule determines that CRS corresponding to described special subframe transmits port, particularly as follows: notice end side is when in special subframe in DwPTS Orthogonal frequency division multiplex OFDM number of symbols more than 3 but less than 10 time, if normal subframe corresponding CRS transmission port number be N, and N < 4, it is determined that the number of CRS transmission port corresponding for DwPTS in special subframe is N+1；When in DwPTS in special subframe OFDM symbol number when being not more than 3, end side determines that CRS port number corresponding for DwPTS in special subframe is 4；

By described CRS transmission port, corresponding CRS is transmitted to end side.

2. the method for claim 1, it is characterised in that the described CRS transmission port used on extension carrier wave is for being Any one or combination in any in the CRS antenna port that system is supported.

3. the method for claim 1, it is characterised in that the CRS transmission port notice end side that will determine, including:

Use high-level signaling by CRS transmission port notice end side the most corresponding with special subframe for normal descending sub frame；Or Person,

Use high-level signaling that CRS transmission port corresponding for the normal descending sub frame determined is notified end side, and notice is eventually According to preset rules, side determines that the CRS that described special subframe is corresponding transmits port.

4. the method as described in claim 1,2 or 3, it is characterised in that after the CRS transmission port notice end side that will determine, Before by described CRS transmission port by corresponding CRS transmission to end side, including:

Use high-level signaling by be arranged in extension carrier wave on use CRS frequency offset amount and the tool of CRS code sequence initial value Body value notice end side, or, use high-level signaling will be arranged on extension carrier wave the CRS frequency offset amount and CRS that use The additional identification ID parameter notice end side that code sequence initial value is corresponding.

5. the method as described in claim 1,2 or 3, it is characterised in that after the CRS transmission port notice end side that will determine, Before by described CRS transmission port by corresponding CRS transmission to end side, including:

It is arranged on extension carrier wave the CRS being arranged to mourn in silence mute state to end side notice and transmits port；Wherein, set The CRS being set to mute state transmits the transmission not carrying out any information on the Resource Unit RE that port is corresponding.

6. method as claimed in claim 5, it is characterised in that when any one CRS transmission port is set to mute state, Including:

Any one CRS described transmission port is disposed as mute in all or part of descending sub frame of carrying CRS transmission State.

7. the method for reseptance of a descending reference symbol, it is characterised in that including:

Determine according to network side notice and be arranged on extension carrier wave the community dedicated reference symbols CRS transmission port used, wherein, Described extension carrier wave is the carrier wave that can not work alone；Wherein, determine that described CRS transmits port according to network side notice, including: Notify according to network side, determine phase respectively for the common normal descending sub frame under TDD standard and special subframe The CRS answered transmits port；Wherein, for special subframe, determine that described CRS transmits port according to network side notice, including: according to According to preset rules, network side notice determines that the CRS that described special subframe is corresponding transmits port, particularly as follows: when in special subframe When orthogonal frequency division multiplex OFDM number of symbols in DwPTS is more than 3 but is less than 10, if the CRS transmission ends that normal subframe is corresponding The number of mouth is N, and N < 4, it is determined that the number of CRS transmission port corresponding for DwPTS in special subframe is N+1；When special son When the OFDM symbol number of DwPTS wind is only not more than 3 in frame, determine that CRS port number corresponding for DwPTS in special subframe is 4；

The CRS of network side transmission is received by described CRS transmission port.

8. method as claimed in claim 7, it is characterised in that the described CRS transmission port used on extension carrier wave is for being Any one or combination in any in the CRS antenna port that system is supported.

9. method as claimed in claim 7, it is characterised in that determine that described CRS transmits port, bag according to network side notice Include:

The high-level signaling sent by network side determines the CRS transmission ends that normal descending sub frame is the most corresponding with special subframe Mouthful；Or,

The high-level signaling sent by network side determines that the CRS that normal descending sub frame is corresponding transmits port, and according to network According to preset rules, side notice determines that the CRS that described special subframe is corresponding transmits port.

10. the method as described in claim 7,8 or 9, it is characterised in that determine described CRS transmission ends according to network side notice After Kou, before received the CRS of network side transmission by described CRS transmission port, including:

The high-level signaling sent according to network side determines CRS frequency offset amount and the CRS code sequence being arranged in use on extension carrier wave The concrete value of row initial value, or, determine according to the high-level signaling of network side transmission and be arranged on extension carrier wave the CRS used Frequency offset amount and additional identification ID parameter corresponding to CRS code sequence initial value.

11. methods as described in claim 7,8 or 9, it is characterised in that determine described CRS transmission ends according to network side notice After Kou, before received the CRS of network side transmission by described CRS transmission port, including:

Determine that according to network side notice being arranged on extension carrier wave the CRS being arranged to mourn in silence mute state transmits port；Wherein, The transmission not carrying out any information on the Resource Unit RE that port is corresponding is transmitted at the CRS being arranged to mute state.

12. methods as claimed in claim 11, it is characterised in that any one CRS is transmitted port according to network side notice When being defined as mute state, including:

Described any one CRS transmission port all or part of descending son in carrying CRS transmission is determined according to network side notice Frame is mute state.

The transmitting device of 13. 1 kinds of descending reference symbols, it is characterised in that including:

Main control unit, for determining that being arranged on extension carrier wave the community dedicated reference symbols CRS used transmits port, and will really Fixed CRS transmission port notice end side, wherein, described extension carrier wave is the carrier wave that can not work alone；Wherein it is determined that it is described CRS transmits port, including: it is respectively configured for the common normal descending sub frame under TDD standard and special subframe Corresponding CRS transmits port；Wherein, for special subframe, the CRS that will determine transmission port notifies end side, including: notice is eventually According to preset rules, side determines that the CRS that described special subframe is corresponding transmits port, particularly as follows: notice end side works as special subframe When orthogonal frequency division multiplex OFDM number of symbols in middle DwPTS is more than 3 but is less than 10, if the CRS transmission that normal subframe is corresponding The number of port is N, and N < 4, it is determined that the number of CRS transmission port corresponding for DwPTS in special subframe is N+1；When special When in subframe, the OFDM symbol number in DwPTS is not more than 3, end side determines CRS port number corresponding for DwPTS in special subframe It is 4；

Communication unit, for transmitting corresponding CRS to end side by described CRS transmission port.

14. devices as claimed in claim 13, it is characterised in that what described main control unit determined is extending use on carrier wave CRS transmission port is any one or the combination in any in the CRS antenna port that system is supported.

15. devices as claimed in claim 13, it is characterised in that the CRS transmission port notice that described communication unit will determine End side, including:

Use high-level signaling by CRS transmission port notice end side the most corresponding with special subframe for normal descending sub frame；Or Person,

Use high-level signaling that CRS transmission port corresponding for the normal descending sub frame determined is notified end side, and notice is eventually According to preset rules, side determines that the CRS that described special subframe is corresponding transmits port.

16. devices as described in claim 13,14 or 15, it is characterised in that the CRS transmission ends that described main control unit will determine After mouth notice end side, corresponding CRS was transmitted before end side by described CRS transmission port at described communication unit, Use high-level signaling by be arranged in use on extension carrier wave CRS frequency offset amount and specifically the taking of CRS code sequence initial value Value notice end side, or, use high-level signaling will be arranged on extension carrier wave the CRS frequency offset amount and CRS code sequence that use The additional identification ID parameter notice end side that row initial value is corresponding.

17. devices as described in claim 13,14 or 15, it is characterised in that the CRS transmission ends that described main control unit will determine After mouth notice end side, corresponding CRS was transmitted before end side by described CRS transmission port at described communication unit, It is arranged on extension carrier wave the CRS being arranged to mourn in silence mute state to end side notice and transmits port；Wherein, described communication unit The transmission not carrying out any information on the Resource Unit RE that port is corresponding is transmitted at the CRS being arranged to mute state in unit.

18. devices as claimed in claim 17, it is characterised in that any one CRS transmission port is set by described main control unit When being set to mute state, including:

Any one CRS described transmission port is disposed as mute in all or part of descending sub frame of carrying CRS transmission State.

The transmitting device of 19. 1 kinds of descending reference symbols, it is characterised in that including:

Processing unit, is arranged on extension carrier wave, for determining according to network side notice, the community dedicated reference symbols CRS used Transmission port, wherein, described extension carrier wave is the carrier wave that can not work alone；Wherein, described CRS is determined according to network side notice Transmission port, including: notify according to network side, for the common normal descending sub frame under TDD standard and special Subframe determines that corresponding CRS transmits port respectively；Wherein, for special subframe, determine that described CRS transmits according to network side notice Port, including: determine that the CRS that described special subframe is corresponding transmits port according to network side notice according to preset rules, particularly as follows: When the orthogonal frequency division multiplex OFDM number of symbols in DwPTS in special subframe is more than 3 but is less than 10, if normal subframe is corresponding The number of CRS transmission port be N, and N < 4, it is determined that the number of CRS transmission port corresponding for DwPTS in special subframe is N+ 1；When the OFDM symbol number of DwPTS wind is only not more than 3 in special subframe, determine CRS port corresponding for DwPTS in special subframe Number is 4；

Communication unit, for receiving the CRS of network side transmission by described CRS transmission port.

20. devices as claimed in claim 19, it is characterised in that what described processing unit determined is extending use on carrier wave CRS transmission port is any one or the combination in any in the CRS antenna port that system is supported.

21. devices as claimed in claim 19, it is characterised in that described processing unit determines described according to network side notice CRS transmits port, including:

The high-level signaling sent by network side determines the CRS transmission ends that normal descending sub frame is the most corresponding with special subframe Mouthful；Or,

The high-level signaling sent by network side determines that the CRS that normal descending sub frame is corresponding transmits port, and according to network According to preset rules, side notice determines that the CRS that described special subframe is corresponding transmits port.

22. devices as described in claim 19,20 or 21, it is characterised in that described processing unit is according to network side notice really After fixed described CRS transmission port, described communication unit by described CRS transmission port receive network side transmission CRS it Before, the high-level signaling sent according to network side determines at the beginning of CRS frequency offset amount and the CRS sequence being arranged in use on extension carrier wave The concrete value of initial value, or, determine according to the high-level signaling of network side transmission and be arranged on extension carrier wave the CRS frequency domain used Side-play amount and additional identification ID parameter corresponding to CRS sequence initial value.

23. devices as described in claim 19,20 or 21, it is characterised in that described processing unit is according to network side notice really After fixed described CRS transmission port, before described communication unit receives the CRS of network side transmission by described CRS transmission port, Determine that according to network side notice being arranged on extension carrier wave the CRS being arranged to mourn in silence mute state transmits port；Wherein, described Communication unit transmits the biography not carrying out any information on the Resource Unit RE that port is corresponding at the CRS being arranged to mute state Defeated.

24. devices as claimed in claim 23, it is characterised in that described processing unit notifies any one according to network side When CRS transmission port is defined as mute state, including:

Described any one CRS transmission port all or part of descending son in carrying CRS transmission is determined according to network side notice Frame is mute state.