CN103369700A - Transmission method and device for downlink reference signals - Google Patents

Abstract

The invention discloses a transmission method and device for downlink reference signals. The method includes: a base station is capable of being flexibly configured on CRS transmission ports which are used on extended carriers, that is, one or any combination of system ports in a system can be configured without limitation of existing LTE system modes so that reliable time-frequency synchronization and measurement can be realized on the extended carriers based on the CRS. Thus system performance is improved.

Description

A kind of transmission method of descending reference symbol and device

Technical field

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

Background technology

In LTE-A (Long Term Evolution-Advanced, long-term evolution upgrading) system, the peak rate of system has huge raising than LTE, requires to reach descending 1Gbps, up 500Mbps.If only using a maximum bandwidth can't reach peak rate as the carrier wave of 20MHz requires.Therefore, the LTE-A system needs the operable bandwidth of terminal extension, introduced thus CA (Carrier Aggregation, carrier aggregation) technology, be about under the same eNB (base station) a plurality of continuous or discrete carrier aggregation together, simultaneously for the UE service, so that required speed to be provided.These carrier waves that condense together are called again CC (component carrier, member carrier).Each residential quarter can be a member carrier, and the residential quarter under the different e NB (being member's carrier wave) can not polymerization.For the UE that guarantees LTE can work under the carrier wave of each polymerization, each carrier wave maximum is no more than 20MHz.For example, consult as shown in Figure 1, have under the base station 4 can polymerization carrier wave, the base station can be simultaneously on 4 carrier waves and UE carry out transfer of data, to improve throughput of system.

In the present LTE system, CRS (Cell-specific reference signals, the residential quarter dedicated reference symbols) in the descending sub frame of all transmission PDSCH, all transmits, and CRS supports at most 4 port transmission, and the resource location of each port in a Physical Resource Block specifically consulted shown in Fig. 2 A and Fig. 2 B.

Shown in Fig. 2 A and Fig. 2 B, under the prior art, the antenna port compound mode that adopts in the LTE system is: when cell configuration was single antenna port transmission (being called for short single port transmits), antenna port 0 transmission CRS was used in the base station; When cell configuration was double antenna port transmission (being called for short dual-port transmits), antenna port 0 and 1 transmission CRS were used in the base station; When cell configuration was four antenna ports transmission (being called for short four port transmission), antenna port 0～3 transmission CRS was used in the base station.In existing LTE system, UE carries out Time and Frequency Synchronization and measurement based on CRS.

And in LTE TDD system, have three kinds of subframes; be respectively: sub-frame of uplink, special subframe and descending sub frame; wherein; special subframe in the LTE TDD system is comprised 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 is supported various configurations, and the length of 3 part time slots is different in the different configurations, and is as shown in the table:

Table 1

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

In the practical application, in order further to improve resource utilization ratio, to formulate the new carrier type of introducing in carrier aggregation system among the LTE-A Rel-11, namely expand carrier wave, be called additional carrier type, perhaps, new carrier type), adopt the purpose of expansion carrier wave be strengthen the system spectrum utilance, better support heterogeneous network, reduce power consumption.

For the programme of work of expanding carrier wave just under discussion, the conclusion of reaching at present comprises:

1) compresses or eliminate existing control signal and/or CRS and the associated working of a backward compatibility carrier wave.

2) support two kinds of operative scenario:

Sync carrier: all be synchronous with legacy (tradition) carrier wave in time domain and frequency domain from the angle of receiving terminal expansion carrier wave, UE does not need the expansion carrier wave is carried out independent Time and Frequency Synchronization processing;

Asynchronous carrier wave: have certain deviation in time domain and frequency domain from angle expansion carrier wave and the legacy carrier wave of receiving terminal.

At present, the transmission method for reference symbol on the expansion carrier wave does not also have clear and definite technical scheme.

Summary of the invention

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

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

A kind of transmission method of descending reference symbol comprises:

Determine to be configured in the CRS transmit port of using on the expansion carrier wave, and with the CRS transmit port notification terminal side of determining, wherein, the carrier wave of described expansion carrier wave for not working alone;

By described CRS transmit port corresponding CRS is transferred to end side.

A kind of transmission method of descending reference symbol comprises:

Determine to be configured in the CRS transmit port of using on the expansion carrier wave according to the network side notice, wherein, the carrier wave of described expansion carrier wave for not working alone;

Receive the CRS of network side transmission by described CRS transmit port.

A kind of transmitting device of descending reference symbol comprises:

Main control unit is used for determining to be configured in the CRS transmit port of using on the expansion carrier wave, and with the CRS transmit port notification terminal side of determining; Wherein, the carrier wave of described expansion carrier wave for not working alone;

Communication unit is used for by described CRS transmit port corresponding CRS being transferred to end side.

A kind of transmitting device of descending reference symbol comprises:

Processing unit is used for determining to be configured in the CRS transmit port of using on the expansion carrier wave according to the network side notice; Wherein, the carrier wave of described expansion carrier wave for not working alone;

Communication unit is used for receiving the CRS that network side transmits by described CRS transmit port.

In sum, in follow-up LTE-A Rel-11 carrier aggregation system, owing to supporting the expansion carrier wave, and the design original intention of this expansion carrier wave is to improve frequency efficiency, reduce power consumption etc., therefore, if realize the expansion carrier wave is carried out independently Time and Frequency Synchronization and measurement, then need to use custom-designed CRS transmission plan, with more flexible, efficiently, use reliably the expansion carrier wave, the present invention has provided a kind of CRS transmission plan on the expansion carrier wave, and the base station can be configured in the CRS transmit port of the use on the expansion carrier wave flexibly, namely can be configured to a kind of or combination in any in the intrasystem system port, no longer be subject to the restriction of existing LTE system type, thereby, guarantee can realize reliable Time and Frequency Synchronization and measurement based on CRS on the expansion carrier wave, thus the sophisticated systems performance.

Description of drawings

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

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

Fig. 3 is that CRS transfer process figure is realized at the expansion carrier wave in the base station in the embodiment of the invention;

Fig. 4 is that the base station configures CRS transmit port schematic diagram in the embodiment of the invention in normal descending sub frame and special subframe;

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

Fig. 6 is the CRS flow chart that terminal receives base-station transmission in the embodiment of the invention at the expansion carrier wave;

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

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

Embodiment

For the expansion carrier wave of formulating among the LTE-A Rel-11, in the embodiment of the invention, provide a kind of in the expansion carrier wave transmission descending reference symbol (such as, specific implementation CRS).

Below in conjunction with accompanying drawing the preferred embodiment of the present invention is elaborated.

Consult shown in Figure 3ly, in the embodiment of the invention, the base station realizes that at the expansion carrier wave flow process of CRS transmission is as follows:

Step 300: the base station is determined to be configured in the CRS transmit port of using on the expansion carrier wave, and with the CRS transmit port notification terminal side of determining, wherein, the carrier wave of this expansion carrier wave for not working alone.

In the embodiment of the invention, be configured in employed CRS transmit port on the expansion carrier wave, can be a kind of or combination in any in the CRS antenna port (being designated hereinafter simply as antenna port) that uses of system support, and the base station CRS transmit port that will adopt high-level signaling to configure to the end side notice in semi-static mode.And in the prior art, the base station is not need to notify the CRS transmit port to terminal, and terminal can detect voluntarily.

Wherein, on configuration expansion carrier wave, during employed CRS transmit port, can adopt flexible configuration antenna port compound mode, namely not be subject to antenna port compound mode of the prior art.The antenna port compound mode that can be used by administrative staff's predefine, one of predefined antenna port compound mode notice is only chosen to end side in the base station, also can determine voluntarily the antenna port compound mode by the base station, thereby provide more CRS pattern (pattern), for many cell networkings facilitate.For example, network side is when configuration antenna port compound mode, can be based on following consideration: when antenna port 0 transmission CRS was used in residential quarter 1, antenna port 1 transmission CRS can be used in identical frequency band in adjacent residential quarter 2, then can avoid the phase mutual interference between the CRS of neighbor cell.

Concrete, in the embodiment of the invention, when the spendable antenna port compound mode of configuration, can adopt following methods:

During the single antenna port transmission: configurable use { port 0} or { port one }; Or, configurable practicality { port 0} or { port one } or { port 2} or { port 3};

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

Configurable use { port 0, port one } or { port 0, port 2} or { port 0, port 3} or { port one, port 2} or { port one, port 3} or { port 2, port 3};

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

During the transmission of four antenna ports: configurable use { port one, port 2, port 3, port 4}.

Step 310: the base station will transfer to end side accordingly by the CRS transmit port of configuration.

In the embodiment of the invention, owing to being for expansion carrier wave design CRS transmission plan, thereby no matter whether exist downlink data transmission, base station all to need to configure CRS to transmit to carry out Time and Frequency Synchronization, be that the base station both can be with the CRS individual transmission to end side, terminal only need detect CRS and got final product this moment; Also can be in the descending sub frame of configuration transmission CRS the dispatching downlink data, transfer to end side after to be the base station compound with CRS and downlink data, but downlink data can not be mapped on the shared RE of CRS, at this moment, terminal can detect CRS, and according to the indication downlink data receiving of dispatch.

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

For the TDD system, when configuration CRS transmit port, the base station can configure respectively CRS transmit port in the special subframe and the CRS transmit port in normal (common) descending sub frame; Wherein, because there is various configurations in special subframe, the duration of DwPTS is compared short with the duration of normal descending sub frame in the partial configuration, can't transmit whole CRS corresponding to single antenna port, thereby then can reduce net synchronization capability, in order to address this problem, better, the base station can configure at least two CRS transmit pories in the DwPTS in special subframe.For example, in the TDD system, defined seven kinds of TDD ascending-descending subframes configurations, specifically as shown in table 2, wherein D represents the DL subframe, and U represents the UL subframe, and S represents the special subframe of TDD system.

Table 2

(configuration of TDD ascending-descending subframes)

So, consult shown in Figure 4, suppose that special subframe has adopted TDD uplink-downlink configuration 1, wherein, DwPTS only comprises 9 OFDM (Orthogonal Frequency Division Multiplexing, OFDM) symbol, then for the normal descending sub frame, antenna port 0 transmission CRS is used in the base station configuration, be to comprise 8 CRS in each Resource Block, and in DwPTS, because antenna port 0 and antenna port 2 transmission CRS are used in the base station configuration, be to comprise 10 CRS in each Resource Block, like this, even for any one antenna port, all can't be with whole CRS end of transmissions of correspondence, but the CRS total number of each port transmission and normal descending sub frame keep approximately equal, thereby have guaranteed the net synchronization capability of system.

Based on above-mentioned CRS port arrangement mode, when the base station is notified the CRS transmit port of configuration by high-level signaling to end side, can adopt high-level signaling directly with each special subframe and CRS port notification terminal side corresponding to normal subframe difference; Perhaps, also can adopt high-level signaling with the CRS port notification terminal side on the normal subframe, and the notification terminal side is determined CRS transmit port on the special subframe according to preset rules.Be exemplified below for latter event:

When the OFDM number of symbols in the DwPTS in the special subframe greater than 3 but less than 10 the time, if the number of CRS transmit port corresponding to normal subframe is N, and N＜4, then end side determines that the number of the CRS transmit port that DwPTS is corresponding in the special subframe is N+1; When the OFDM symbolic number in the DwPTS in the special subframe only is not more than 3, end side determines that the CRS port number that DwPTS is corresponding in the special subframe is 4, wherein, if need to increase CRS transmit port number in the DwPTS in special subframe, then preferentially use antenna port 2 and antenna port 3, namely the configuration preference level of antenna port 2 and antenna port 3 is the highest.

On the other hand, in the embodiment of the invention, after the execution in step 300, before execution in step 310, a kind of or combination in any in following two kinds of operations (only for for example but be not limited to this) can also be carried out in the base station:

1) the base station CRS frequency domain side-play amount that adopts high-level signaling to be configured in to use on the expansion carrier wave and the concrete value notification terminal side of CRS code sequence initial value, perhaps, adopt high-level signaling will be configured in CRS frequency domain side-play amount and additional ID parameter notification terminal side corresponding to CRS sequence initial value of using on the expansion carrier wave.

Under the prior art, in LTE Rel-8, CRS frequency domain side-play amount (is designated as

(be designated as with CRS code sequence initial value $c_{\mathrm{init}}=2^{10}\·(7\·(n_s+1)+l+1)\·(2\·N_{\mathrm{ID}}^{\mathrm{cell}}+1)+2\·N_{\mathrm{ID}}^{\mathrm{cell}}+N_{\mathrm{CP}})$ All being terminal, (residential quarter ID is designated as based on the cell ID that detects when the network registry

Obtain, need not the base station notice.Yet, in the embodiment of the invention, because may there be independently cell ID in expansion on the carrier wave, therefore, in such cases, the base station need to be notified CRS frequency domain side-play amount and CRS code sequence initial value to end side, better, the base station can adopt high-level signaling that CRS frequency domain side-play amount and the CRS code sequence initial value of configuration are notified to end side, for example, an additional ID parameter that configures to the expansion carrier wave can be notified by high-level signaling in the base station to end side, be designated as

Make terminal based on this

Adopt and use the method for Rel-8 standard to determine CRS frequency domain side-play amount and CRS code sequence initial value; Again for example, the base station also can be notified to the CRS frequency domain side-play amount of expansion carrier wave configuration and the concrete value of CRS code sequence initial value to end side by high-level signaling.Like this, base station and end side all can be determined according to the CRS frequency domain side-play amount of configuration the carrier wave of carrying CRS transmission, and the CRS sequence of determining actual transmissions according to the CRS code sequence initial value of configuration.

2) base station is configured in the CRS transmit port that is set to mute (mourning in silence) state on the expansion carrier wave to the end side notice; Wherein, any information (is not transmitted on the RE (Resource Element, Resource Unit) at RE corresponding to the CRS transmit port that is set to the mute state in the base station.

In the embodiment of the invention, although the CRS transmit port of configuration has been notified in the base station to end side, but, interference for fear of the minizone, the base station also needs part CRS transmit port wherein to be set to the mute state, transfer of data is not carried out among RE corresponding to CRS transmit port in this section in the base station, does not carry out the CRS transmission yet.The neighbor cell of administration residential quarter, base station uses antenna port 1 transmission CRS, so, for fear of the CRS that transmits on the neighbor cell is caused interference, the base station is with the RE of antenna port 2 correspondences of vacant this residential quarter, thereby reduction presence of intercell interference, as, to consult shown in Figure 5ly, antenna port 1 is set to mute state (being the lattice filling part)

In the practical application, the base station with any one CRS transmit port (as, when antenna port 2) being set to the mute state, this CRS transmit port all can be set to the mute state in all or part of descending sub frame (comprising the DwPTS in normal descending sub frame and the special subframe) of carrying CRS transmission.

Based on above-described embodiment, to consult shown in Figure 6ly, in the embodiment of the invention, terminal receives the network side transmission at the expansion carrier wave the flow process of CRS is as follows:

Step 600: terminal determines to be configured in the CRS transmit port of using on the expansion carrier wave according to the network side notice, wherein, and the carrier wave of this expansion carrier wave for not working alone.。

In the embodiment of the invention, a kind of or combination in any in the antenna port that the CRS transmit port that the expansion carrier wave uses can be used as system's support; Specifically consult the associated description of step 300, do not repeat them here.

On the other hand, when execution in step 600, terminal can be notified according to network side, determine respectively corresponding CRS transmit port for the normal descending sub frame under the TDD standard and special subframe, wherein, because the duration of the DwPTS in the special subframe is shorter than the duration of normal descending sub frame, terminal can be determined corresponding at least two the CRS transmit pories of the DwPTS in this special subframe.

In the present embodiment, terminal can be determined the respectively CRS transmit port of correspondence of normal descending sub frame and special subframe by the high-level signaling that network side sends; Perhaps, determine the CRS transmit port that the normal descending sub frame is corresponding by the high-level signaling that network side sends, and determine the CRS transmit port that described special subframe is corresponding 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 the DwPTS in the special subframe greater than 3 but less than 10 the time, if the number of the CRS transmit port that the normal subframe is corresponding is N, and N＜4 determine that then the number of the CRS transmit port that DwPTS is corresponding in the special subframe is N+1; When the OFDM symbolic number of DwPTS wind in the special subframe only is not more than 3, determine that the CRS port number that DwPTS is corresponding in the special subframe is 4.

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

In the above-described embodiments, after terminal is determined the CRS transmit port of configuration according to the network side notice, receive in the CRS transmit port by configuration before the CRS of network side transmission, can carry out a kind of or combination in any in following any operation (only for for example but be not limited to this) and comprise:

1) high-level signaling that sends according to network side of terminal determines to be configured in the CRS frequency domain side-play amount used on the expansion carrier wave and the concrete value of CRS code sequence initial value, perhaps, the high-level signaling that sends by network side determines to be configured in CRS frequency domain side-play amount and additional ID parameter corresponding to CRS code sequence initial value of using on the expansion carrier wave.

2) terminal is determined to be configured in according to network side notice and is set to mourn in silence the CRS transmit port of mute state on the expansion carrier wave; Wherein, terminal is not carried out the transmission of any information on Resource Unit RE corresponding to the CRS transmit port that is set to the mute state.On the other hand, when terminal is defined as the mute state according to the network side notice with any one CRS transmit port, can side notice Network Based determine that this any one CRS transmit port is the mute state in all or part of descending sub frame of carrying CRS transmission.

The specific implementation of above steps is consulted the associated description of step 300-step 310, does not repeat them here.

Consult shown in Figure 7ly, in the embodiment of the invention, the base station comprises main control unit 70 and communication unit 71, wherein,

Main control unit 70 is used for determining to be configured in the CRS transmit port of using on the expansion carrier wave, and with the CRS transmit port notification terminal side of determining, wherein, the carrier wave of this expansion carrier wave for not working alone.

Communication unit 71 is used for by the CRS transmit port of configuration corresponding CRS being transferred to end side.

As shown in Figure 7, also further comprise dispensing unit 72 in the base station, be used for being configured in the CRS transmit port of using on the expansion carrier wave, as, configure respectively corresponding CRS transmit port for the common normal descending sub frame under the TDD standard and special subframe, wherein, because the duration of the DwPTS in the special subframe is shorter than the duration of normal descending sub frame, then the DwPTS in the corresponding special subframe configures at least two CRS transmit pories.

Consult shown in Figure 8ly, in the embodiment of the invention, terminal comprises processing unit 80 and communication unit 81, wherein,

Processing unit 80 is used for determining to be configured in the CRS transmit port of using on the expansion carrier wave according to the network side notice, wherein, and the carrier wave of this expansion carrier wave for not working alone.

Communication unit 81 is used for receiving the CRS that network side transmits by the CRS transmit port of configuration.

In sum, in follow-up LTE-A Rel-11 carrier aggregation system, owing to supporting the expansion carrier wave, and the design original intention of this expansion carrier wave is to improve frequency efficiency, reduce power consumption etc., therefore, if realize the expansion carrier wave is carried out independently Time and Frequency Synchronization and measurement, then need to use custom-designed CRS transmission plan, with more flexible, efficiently, use reliably the expansion carrier wave, the present invention has provided a kind of CRS transmission plan on the expansion carrier wave, the base station can be configured in the CRS transmit port of the use on the expansion carrier wave flexibly, namely can be configured to a kind of or combination in any in the intrasystem system port, no longer is subject to the restriction of existing LTE system type, thereby guarantee to realize reliable Time and Frequency Synchronization and measurement based on CRS on the expansion carrier wave, thereby sophisticated systems performance.

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

Claims (32)

1. the transmission method of a descending reference symbol is characterized in that, comprising:

Determine to be configured in the residential quarter dedicated reference symbols CRS transmit port of using on the expansion carrier wave, and with the CRS transmit port notification terminal side of determining, wherein, the carrier wave of described expansion carrier wave for not working alone;

By described CRS transmit port corresponding CRS is transferred to end side.

2. the method for claim 1 is characterized in that, described any one or combination in any in the CRS antenna port that the CRS transmit port used of expansion carrier wave is supported as system.

3. the method for claim 1 is characterized in that, configures described CRS transmit port, comprising:

Configure respectively corresponding CRS transmit port for the common normal descending sub frame under the TDD standard and special subframe.

4. method as claimed in claim 3 is characterized in that, the CRS transmit port notification terminal side with determining comprises:

Adopt high-level signaling with normal descending sub frame and CRS transmit port notification terminal side corresponding to special subframe difference; Perhaps,

Adopt high-level signaling with CRS transmit port notification terminal side corresponding to normal descending sub frame of determining, and the notification terminal side is determined the CRS transmit port that described special subframe is corresponding according to preset rules.

5. method as claimed in claim 4 is characterized in that, described notification terminal side is determined the CRS transmit port that described special subframe is corresponding according to preset rules, comprising:

The notification terminal side when the orthogonal frequency division multiplex OFDM number of symbols in the DwPTS in the special subframe greater than 3 but less than 10 the time, if the number of the CRS transmit port that the normal subframe is corresponding is N, and N＜4 determine that then the number of the CRS transmit port that DwPTS is corresponding in the special subframe is N+1; When the OFDM number of symbols in the DwPTS in the special subframe was not more than 3, end side determined that the CRS port number that DwPTS is corresponding in the special subframe is 4.

6. such as each described method of claim 1-5, it is characterized in that, the CRS transmit port notification terminal rear flank with determining before by described CRS transmit port corresponding CRS being transferred to end side, comprising:

Adopt high-level signaling to be configured in to use on the expansion carrier wave CRS frequency domain side-play amount and the concrete value notification terminal side of CRS code sequence initial value, perhaps, adopt high-level signaling will be configured in CRS frequency domain side-play amount and additional identification ID parameter notification terminal side corresponding to CRS code sequence initial value of using on the expansion carrier wave.

7. such as each described method of claim 1-5, it is characterized in that, the CRS transmit port notification terminal rear flank with determining before by described CRS transmit port corresponding CRS being transferred to end side, comprising:

Be configured in the CRS transmit port of the mute state that is set on the expansion carrier wave to mourn in silence to end side notice; Wherein, on Resource Unit RE corresponding to the CRS transmit port that is set to the mute state, do not carry out the transmission of any information.

8. method as claimed in claim 7 is characterized in that, when any one CRS transmit port is set to the mute state, comprising:

Described any one CRS transmit port all is set to the mute state in all or part of descending sub frame of carrying CRS transmission.

9. the method for reseptance of a descending reference symbol is characterized in that, comprising:

Determine to be configured in the residential quarter dedicated reference symbols CRS transmit port of using on the expansion carrier wave according to the network side notice, wherein, the carrier wave of described expansion carrier wave for not working alone;

Receive the CRS of network side transmission by described CRS transmit port.

10. method as claimed in claim 9 is characterized in that, described any one or combination in any in the CRS antenna port that the CRS transmit port used of expansion carrier wave is supported as system.

11. method as claimed in claim 9 is characterized in that, determines described CRS transmit port according to the network side notice, comprising:

According to the network side notice, determine respectively corresponding CRS transmit port for the common normal descending sub frame under the TDD standard and special subframe.

12. method as claimed in claim 11 is characterized in that, determines described CRS transmit port according to the network side notice, comprising:

Determine the respectively CRS transmit port of correspondence of normal descending sub frame and special subframe by the high-level signaling that network side sends; Perhaps,

Determine the CRS transmit port that the normal descending sub frame is corresponding by the high-level signaling that network side sends, and determine the CRS transmit port that described special subframe is corresponding according to the network side notice according to preset rules.

13. method as claimed in claim 12 is characterized in that, determines the CRS transmit port that described special subframe is corresponding according to the network side notice according to preset rules, comprising:

When the orthogonal frequency division multiplex OFDM number of symbols in the DwPTS in the special subframe greater than 3 but less than 10 the time, if the number of CRS transmit port corresponding to normal subframe is N, and N＜4, determine that then the number of the CRS transmit port that DwPTS is corresponding in the special subframe is N+1; When the OFDM symbolic number of DwPTS wind in the special subframe only is not more than 3, determine that the CRS port number that DwPTS is corresponding in the special subframe is 4.

14. such as each described method of claim 9-13, it is characterized in that, after the definite described CRS transmit port of network side notice, before receiving the CRS of network side transmission by described CRS transmit port, comprising:

The high-level signaling that sends according to network side determines to be configured in the CRS frequency domain side-play amount used on the expansion carrier wave and the concrete value of CRS code sequence initial value, perhaps, the high-level signaling that sends according to network side determines to be configured in CRS frequency domain side-play amount and additional identification ID parameter corresponding to CRS code sequence initial value of using on the expansion carrier wave.

15. such as each described method of claim 9-13, it is characterized in that, after the definite described CRS transmit port of network side notice, before receiving the CRS of network side transmission by described CRS transmit port, comprising:

Determine to be configured in according to network side notice and be set to mourn in silence the CRS transmit port of mute state on the expansion carrier wave; Wherein, on Resource Unit RE corresponding to the CRS transmit port that is set to the mute state, do not carry out the transmission of any information.

16. method as claimed in claim 15 is characterized in that, when according to the network side notice any one CRS transmit port being defined as the mute state, comprising:

Determine that according to the network side notice described any one CRS transmit port is the mute state in all or part of descending sub frame of carrying CRS transmission.

17. the transmitting device of a descending reference symbol is characterized in that, comprising:

Main control unit is used for determining to be configured in the residential quarter dedicated reference symbols CRS transmit port of using on the expansion carrier wave, and with the CRS transmit port notification terminal side of determining, wherein, the carrier wave of described expansion carrier wave for not working alone;

Communication unit is used for by described CRS transmit port corresponding CRS being transferred to end side.

18. device as claimed in claim 17 is characterized in that, any one in the CRS antenna port that the CRS transmit port the expansion carrier wave uses that described main control unit is determined is supported as system or combination in any.

19. device as claimed in claim 17 is characterized in that, further comprises:

Dispensing unit is used for configuring described CRS transmit port, comprising: configure respectively corresponding CRS transmit port for the common normal descending sub frame under the TDD standard and special subframe.

20. device as claimed in claim 19 is characterized in that, described communication unit comprises the CRS transmit port notification terminal side of determining:

Adopt high-level signaling with normal descending sub frame and CRS transmit port notification terminal side corresponding to special subframe difference; Perhaps,

Adopt high-level signaling with CRS transmit port notification terminal side corresponding to normal descending sub frame of determining, and the notification terminal side is determined the CRS transmit port that described special subframe is corresponding according to preset rules.

21. device as claimed in claim 20 is characterized in that, described communication unit notification terminal side is determined the CRS transmit port that described special subframe is corresponding according to preset rules, comprising:

The notification terminal side when the orthogonal frequency division multiplex OFDM number of symbols in the DwPTS in the special subframe greater than 3 but less than 10 the time, if the number of the CRS transmit port that the normal subframe is corresponding is N, and N＜4 determine that then the number of the CRS transmit port that DwPTS is corresponding in the special subframe is N+1; When the OFDM symbolic number of DwPTS wind in the special subframe only was not more than 3, end side determined that the CRS port number that DwPTS is corresponding in the special subframe is 4.

22. such as each described device of claim 17-21, it is characterized in that, described main control unit is with the CRS transmit port notification terminal rear flank of determining, before described communication unit transfers to end side by described CRS transmit port with corresponding CRS, adopt high-level signaling to be configured in to use on the expansion carrier wave CRS frequency domain side-play amount and the concrete value notification terminal side of CRS code sequence initial value, perhaps, adopt high-level signaling will be configured in CRS frequency domain side-play amount and additional identification ID parameter notification terminal side corresponding to CRS code sequence initial value of using on the expansion carrier wave.

23. such as each described device of claim 17-21, it is characterized in that, described main control unit is with the CRS transmit port notification terminal rear flank of determining, before described communication unit transfers to end side by described CRS transmit port with corresponding CRS, be configured in the CRS transmit port of the mute state that is set on the expansion carrier wave to mourn in silence to end side notice; Wherein, described communication unit does not carry out the transmission of any information on Resource Unit RE corresponding to the CRS transmit port that is set to the mute state.

24. device as claimed in claim 23 is characterized in that, when any one CRS transmit port of described main control unit is set to the mute state, comprising:

Described any one CRS transmit port all is set to the mute state in all or part of descending sub frame of carrying CRS transmission.

25. the transmitting device of a descending reference symbol is characterized in that, comprising:

Processing unit is used for determining to be configured in the residential quarter dedicated reference symbols CRS transmit port of using on the expansion carrier wave according to the network side notice, wherein, and the carrier wave of described expansion carrier wave for not working alone;

Communication unit is used for receiving the CRS that network side transmits by described CRS transmit port.

26. device as claimed in claim 25 is characterized in that, any one in the CRS antenna port that the CRS transmit port the expansion carrier wave uses that described processing unit is determined is supported as system or combination in any.

27. device as claimed in claim 25 is characterized in that, described processing unit is determined described CRS transmit port according to the network side notice, comprising:

According to the network side notice, determine respectively corresponding CRS transmit port for the common normal descending sub frame under the TDD standard and special subframe.

28. device as claimed in claim 27 is characterized in that, described processing unit is determined described CRS transmit port according to the network side notice, comprising:

Determine the respectively CRS transmit port of correspondence of normal descending sub frame and special subframe by the high-level signaling that network side sends; Perhaps,

Determine the CRS transmit port that the normal descending sub frame is corresponding by the high-level signaling that network side sends, and determine the CRS transmit port that described special subframe is corresponding according to the network side notice according to preset rules.

29. device as claimed in claim 28 is characterized in that, described processing unit is determined the CRS transmit port that described special subframe is corresponding according to the network side notice according to preset rules, comprising:

When the orthogonal frequency division multiplex OFDM number of symbols in the DwPTS in the special subframe greater than 3 but less than 10 the time, if the number of CRS transmit port corresponding to normal subframe is N, and N＜4, determine that then the number of the CRS transmit port that DwPTS is corresponding in the special subframe is N+1; When the OFDM symbolic number of DwPTS wind in the special subframe only is not more than 3, determine that the CRS port number that DwPTS is corresponding in the special subframe is 4.

30. such as each described device of claim 25-29, it is characterized in that, described processing unit is determined after the described CRS transmit port according to the network side notice, before described communication unit receives the CRS of network side transmission by described CRS transmit port, the high-level signaling that sends according to network side determines to be configured in the CRS frequency domain side-play amount used on the expansion carrier wave and the concrete value of CRS sequence initial value, perhaps, the high-level signaling that sends according to network side determines to be configured in CRS frequency domain side-play amount and additional identification ID parameter corresponding to CRS sequence initial value of using on the expansion carrier wave.

31. such as each described device of claim 25-29, it is characterized in that, after described processing unit is determined described CRS transmit port according to the network side notice, before described communication unit receives the CRS of network side transmission by described CRS transmit port, determine to be configured in according to the network side notice and be set to mourn in silence the CRS transmit port of mute state on the expansion carrier wave; Wherein, described communication unit does not carry out the transmission of any information on Resource Unit RE corresponding to the CRS transmit port that is set to the mute state.

32. device as claimed in claim 31 is characterized in that, when described processing unit is defined as the mute state according to the network side notice with any one CRS transmit port, comprising:

Determine that according to the network side notice described any one CRS transmit port is the mute state in all or part of descending sub frame of carrying CRS transmission.

Images