CN102165712B - Method for signaling in a wireless communication system - Google Patents

Abstract

A method in a wireless communication system for signaling number of antenna ports which a transmit node comprises is provided. According to the method a communication signal is transmitted carrying information on number of at least one antenna port of the transmit node, wherein the information on the number of at least one antenna port is partitioned and provided distributed over at least two predefined parts of the communication signal. A transmit node, a receiver node and methods thereof are further provided.

Description

The method of command transmitting in wireless communication system

Technical field

The present invention relates to the method notifying antenna port quantity in a wireless communication system, more specifically, relate to based on the leading method of claim 1.In addition, the invention still further relates to transmitting node and receiving node and correlation method.

Background technology

In radio honeycomb communication system, one or more descending (DL) public reference signal (CRS) can apply to coherent demodulation that mobile terminal in channel measurement or cellular-specific community is suitable for and channel measurement.In some wireless communication system, mobile terminal also can refer to subscriber equipment (UE).It is set up the mapping relations that antenna port and physical transmit antenna be only shown in that each CRS defines so-called antenna port and a kind of universal method realizing antenna port in cellular-specific community.

The reference signal (RS) of different antennae port to each other should be orthogonal thereto, thus ensure interference-free identification respective propagation channel coefficients (propagation channel namely between each transmitting antenna to each reception antenna).Different cellular cells has different RS usually, farthest can reduce the interference in different cellular cells between RS like this.Do not losing under general prerequisite, in entire chapter document, antenna port can defined according to CRS or the specific CRS in cellular cell.The specific CRS in community means that these signals can for multiple UE in cellular network for measuring the channel of each antenna port.Antenna port also can be that user is specific, and namely specific single UE can use port to carry out measuring and/or demodulation.

CRS is that the special reserved resource in cellular cell is launched as temporal frequency resource element (RE), code etc. are upper.And data at this reserved transmitted on resources, can not can avoid the interference between RS like this, and then prevent from being obstructed when estimating the dissemination channel coefficient on antenna port.

For can standard traffic between the base station of Appropriate application DL CRS and execution and such as eNB and so on, to measure for down channel and/or the antenna port quantity of downlink is for the considerable notice information of subscriber equipment.UE obtains in cellular cell after antenna port usage quantity information, and UE will know the emission mode used in each physical channel and the concrete resource that data are launched and DLCRS is suitable for.These data being all very important information is avoided receiving are fallen by the punching of CRS condition, because if a UE does not know the communication resource of CRS, will suppose that all resources data comprised in the resource of CRS received are all receive data, so just reduce the receptivity of data due to the interference of CRS.

In addition, know that the number of CRS is also very important for measuring the multiple channel and detection physical channel etc. that use CRS.In Long Term Evolution (LTE) the 8th edition (Rel-8) standard, antenna port quantity information is embedded in the upper signal launched of Physical Broadcast Channel (PBCH).After the success of cellular network search procedure, UE by synchronous with the temporal frequency of cellular cell for realization, and obtains the Cell Identity CI (ID) of this cellular cell; UE starts to detect PBCH with the quantity of the information and antenna port that obtain specific cell afterwards.

In LTE Rel-8 standard, support three kinds of specific CRS types in community, be defined as one, two and four antenna ports (3GPP TS 36.211 v8.4.0).Antenna port quantity in a community decides the maximum number of plies that eNB supports multiple-input and multiple-output (MIMO) emission layer.Such as: if there are four antenna ports in cellular cell, the most multipotency of eNB supports the transmitting of four MIMO layer.Antenna port quantity information can be embedded in the signal launched on PBCH, by using different cyclic redundancy check (CRC) (CRC) masks for the quantity of marker antenna port.When UE does not know the information of antenna port usage quantity in cellular cell in advance (the CRC mask of the transmission block use of PBCH), UE just need carry out blind Detecting to this category information, this means that UE need detect all possible CRC mask and select the mask that wherein may match most with received PBCH signal.

The operation that reflector on the receiver be embedded in by antenna port quantity information in PBCH and be suitable in LTE Rel-8 system carry out corresponding blind Detecting for PBCH describes and can see below.

The first, on reflector, whole transmission block position a of PBCH ₀, a ₁... a _a-1for calculating CRC check bit P ₀, p ₁... p _l-1, wherein A is the size (i.e. the quantity of information bit) of transmission block, and L is the quantity of the CRC check bit being set to 16 in LTE Rel-8 standard.The second, the antenna port according to cellular cell configures, and CRC check bit is the sequence of 16 by a length scrambling, this sequence is corresponding with antenna port quantity n, and n=1,2 or 4.After scrambling, the CRC check bit of band mask will be c ₀, c ₁... c ₁₅, wherein i=0,1 ..., 15.The table 1 of the visible below of mapping relations of LTE standard is met between three scramble sequence and antenna port quantity.

The CRC mask code sequence of PBCH in table 1:LTE Rel-8

Antenna port quantity	CRC mask code 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>

CRC check bit with mask is attached to the afterbody of PBCH transmission block position, to obtain to be used as a ₀, a ₁... a _a-1, c ₀, c ₁..., c ₁₅the information bit of being launched.

Finally, to information bit a ₀, a ₁... a _a-1, c ₀, c ₁..., c ₁₅carry out the sequence of operations such as chnnel coding, rate-matched, modulation and resource mapping.

When an antenna port, modulation symbol maps directly to the reserved resource on antenna port 0; When two antenna ports, the emission diversity scheme of a kind of " space frequency block coding " (SFBC) by name performs on modulation symbol, and the output of SFBC maps in resource reserved on antenna port 0 and 1 successively; When four antenna ports, SFBC and frequency error factor transmit diversity (FSTD) perform jointly on modulation symbol, and the output of SFBC+FSTD maps to antenna port 0,1,2 and 3 successively.Can find out that antenna port quantity information is the implicit information be embedded in PBCH from foregoing description.

On the receiver, the respective opposed operation of searching antenna port quantity is performed by the UE of cellular network service.Because UE knows possibility hypothesis (namely, two or four antenna port) of three kinds of regarding antenna port numbers, UE can perform blind Detecting to PBCH, concrete visible table 1.In blind detection process, SFBC or SFBC+FSTD decoding, demodulation, channel-decoding and CRC detect and are whole standard operations, therefore separately do not describe them, but can explain the operation removing CRC mask in information announcing below.

Suppose that the output of channel-decoding is wherein rear 16 information bits the CRC check bit by the CRC mask code sequence scrambling corresponding with antenna port quantity information, concrete visible above description.When performing blind Detecting to PBCH, a CRC scrambler can be adopted to carry out descrambling (namely removing CRC mask) to CRC check bit, and concrete grammar is as follows:

${\tilde{c}}_i=({\hat{c}}_i+x_i^n)\mathrm{mod}2$ wherei＝0，1，…，15；

n is the number of antenna ports，

is the defined CRC mask corresponding to n antenna ports

If the CRC mask supposed is identical with the CRC mask used actual on reflector, so aforesaid operations will remove the CRC mask be embedded in CRC check bit completely, and the correct probability detected that performs will increase.

As mentioned above, supported in LTE Rel-8 system uplink/downlink antenna port number mostly is four most.The LTE-Advanced (LTE-A) of Release 10 (Rel-10) and higher system can be considered the expansion to LTE system, and the transmitting on wherein supporting eight layers is at most for promoting the such as systematic function (3GPP TR 36.814v1.0.0) such as high peak data rate, honeycomb average spectral efficiency (ase).For the transmitting in support nearly eight layers, antenna port quantity need be defined be greater than antenna port quantity supported in LTE Rel-8 in LTE-A communication system.

In addition, for meeting the requirement of LTE-A backward compatibility, should ensure that LTE UE can also be served in LTE-A community.For making LTE UE run in lte-a system, the antenna port defined in LTE also should be supported in lte-a system, namely also should there is n LTE CRS in lte-a system, wherein n=1,2 or 4; The same with the effect that LTE CRS plays in LTE system, they can be LTE UE for coherent demodulation and channel measurement, and LTE-AUE also can utilize the control channel of this kind of LTE CRS to such as PBCH and downlink physical control channel (PDCCH) and so on to carry out demodulation simultaneously.

Therefore, in lte-a system, some LTE antenna ports are had for launching LTE data/control and/or LTE-A control information; In addition, the antenna port going back definable some other is only launched for LTE-A data.For all antenna ports in lte-a system, the antenna port of other whole new definition can refer to LTE-A antenna port, and the quantity of LTE-A antenna port can be zero.Therefore a communication system can serving LTE UE and LTE-AUE is needed.In addition, the antenna port quantity based on LTE and LTE-A in LTE-A cellular network may be different, and relevant issues how will represent that the signal that LTE-A antenna port exists is emitted to LTE-AUE, to realize transparent reception LTE antenna port number.

Compare the antenna port (i.e. n=1,2 or 4) that LTE CRS defines, LTE-A eNB may need to enable other CRS (antenna port) for measuring and/or demodulation.In Rel-10, LTE-AUE may need at most to set up eight antenna ports (CRS).These CRS set up refer to channel condition information-RS (CSI-RS).Another problem caused thus how LTE-A antenna port quantity or CSI-RS number signal is emitted to LTE-AUE, transparent to realize LTE UE.

Therefore need a kind of Signalling method of backward compatibility in this area, both can enable LTE UE and obtain LTE antenna port number, surely can ensure that again the signaling of LTE-A antenna port is transparent for LTEUE.

Summary of the invention

An object of the present invention be to provide a kind of be applicable to a notice transmitting node comprise the method for antenna port quantity information.Second object of the present invention is to provide a kind of method solving above-mentioned backward compatibility issues.Another object of the present invention is to provide a kind of solution being conducive to easy enforcement in a wireless communication system, in order to solve the problem.

According to technical characteristic of the present invention, above-mentioned purpose by notify in a wireless communication system transmitting node comprise the signaling quantity of antenna port the method that is suitable for realize.According to said method, the information that signal of communication carries at least one antenna port of transmitting node is sent out, wherein about the information of at least one antenna port is divided and to be distributed in described signal of communication at least two predetermined parts.

Disclosed by said method different embodiments in a wireless communication system have in appended claims 2-14.

According to another technical characteristic of the present invention, above-mentioned purpose by above-mentioned transmitting node in a wireless communication system notify its comprise the quantity of antenna port the method that is suitable for realize.According to said method, above-mentioned transmitting node launches the signal of communication that carries at least one antenna port information of described transmitting node, wherein about the information of at least one antenna port is divided and to be distributed in described signal of communication at least two predetermined parts.

According to the embodiment of above-mentioned technical characteristic of the present invention, above-mentioned wireless communication system refers to LTE-A communication system, and above-mentioned transmitting node refers to base station or relay station.

According to another technical characteristic of the present invention, above-mentioned purpose by be applicable in the receiving node of wireless communication system receive represent transmitting node comprise the signal of the signaling quantity of antenna port method realize.According to said method, the signal of communication of transmission information at least one antenna port that above-mentioned receiving node is received in described transmitting node, wherein in this signal of communication about having the information on one in described antenna port at least through dividing and being distributed at least two predefined fractional transmission at above-mentioned signal of communication.

According to the embodiment of above-mentioned technical characteristic of the present invention, above-mentioned wireless communication system refers to LTE-A communication system, and above-mentioned receiving node refers to the mobile terminal of such as UE and so on.

According to another technical characteristic of the present invention, the transmitting node that above-mentioned purpose comprises the signaling quantity of antenna port applicable by notice transmitting node institute realizes.Described transmitting node is equipped to provides and sends the information that a signal of communication carries at least one antenna port of transmitting node in described wireless communication system, wherein about the information of at least one antenna port is divided and to be distributed in described signal of communication at least two predetermined parts.

According to another technical characteristic of the present invention, by receiving node realize above-mentioned purpose with receive represent transmitting node comprise the signal of antenna port quantity.Described receiving node is equipped to and receives and process carries the signal of communication of at least one antenna port information of described transmitting node, wherein about the information of at least one antenna port is divided and to be distributed in described signal of communication at least two predetermined parts.

Separately can according to the different embodiment configuration transmitting node of said method and receiving node.

The invention provides a kind of notify transmitting node comprise the alternative method of the signaling quantity of antenna port.The present invention also helps the relevant configuration information of facilitating LTE-AUE to obtain the antenna port of transmitting node (such as, eNB or via node), and this information is transparent to LTE UE simultaneously, and has no effect to LTE UE.Therefore, the present invention also provides the solution that above-mentioned backward compatibility issues is suitable for.

Its other advantage and application will be mentioned in the detailed description below the present invention made.

Accompanying drawing explanation

Accompanying drawing is used for illustrating and explaining the present invention, wherein:

Fig. 1 shows the process of in LTE, PBCH being carried out to blind Detecting;

Fig. 2 shows the process of in LTEAdvanced (LTE-A), PBCH being carried out to blind Detecting;

Fig. 3 shows the main structure of the transmitting node standard device that the present invention is suitable for; And

Fig. 4 shows the main structure of the receiving node standard device that the present invention is suitable for.

Embodiment

The present invention relates to a kind of notify in wireless communications transmitting node comprise the method for the related signaling information of antenna port quantity, but wherein transmitting node base station, eNB, relay station or via node.According to embodiments of the invention, the information of the quantity of the uplink/downlink antenna port laid in lte-a system can be divided into I class and II category information.The quantity of I category information display LTE antenna port, the quantity of the antenna port of II category information display LTE-A CSI-RS definition, or the sum of the antenna port of display LTE CRS and LTE-A CSI-RS definition.

Therefore, I class and II category information can show the information of dissimilar antenna port.In lte-a system, LTEUE only needs reception I category information to know the accurate quantity of LTE antenna port, and the antenna port information that recycling obtains performs the communication between LTE-A eNB; And LTE-AUE can receive I class and II category information with satisfied different object, namely I category information is used for the one or more control channel of demodulation, and II category information is used for channel measurement to support higher layer transmission.

Therefore, presents describe a kind of notify in a wireless communication system transmitting node comprise the method for the signaling quantity of antenna port.According to said method, launch the information that signal of communication carries at least one antenna port quantity of transmitting node.The relevant information of the quantity of at least one antenna port can divide and be distributed at least two predefined parts of above-mentioned signal of communication.

In the present invention, signal of communication refers to the one group of bit launched at least one physical channel, and antenna port quantity information is divided at least two parts, and is distributed in the different piece of one group of bit of described signal of communication.In this fashion, antenna port information can be embedded in signal of communication, and namely signal of communication carries transmit antenna port information.LTE UE needs a part of at least identification communication signal, and has at least another part to be transparent to LTE UE in signal of communication, the first and second predetermined portions of these two the corresponding signals of communication of part difference in one of embodiments of the invention.

For supporting the backward compatibility of LTE UE and realize the transparent operation of LTE UE in LTE-A cellular network, first predetermined portions of I category information respective antenna port number relevant information, it is transmitted by being useful in principle the same in LTE cellular cell in another embodiment of the present invention, and LTE and LTE-AUE can detect this information.Therefore, the mode of I category information is that implicit transmission carries out scrambling by utilizing the CRC bit of CRC mask code sequence to the broadcast channel that PBCH launches (BCH) transmission block corresponding with I category information, four LTE antenna ports are utilized to launch PBCH at most, the corresponding signal of communication of BCH transmission block comprising the CRC bit of scrambling, and the first predefine part of the corresponding signal of communication of the CRC bit of this scrambling.Problem relates to for the antenna port quantity for launching PBCH, and this quantity depends on the configuration of LTE antenna port in LTE-A cellular network.

After I category information being detected, the quantity (one, two or three) according to the antenna port identified in cellular cell is continued operation by LTE UE.But, because LTE-A UE need determine that antenna port quantity that LTE-A CSI-RS defines is to carry out channel measurement, LTE-AUE, so LTE-AUE also needs the II category information first translating respective antenna port number information Part II, then obtain the accurate information laying antenna port quantity that LTE-AUE may use.Therefore, LTE-AUE is only had II category information to be detected.

In LTE Rel-8 system, the size of the BCH transmission block of the upper transmitting of PBCH is 24 bits, and has 10 bit IDLE positions to keep for following communication system to be suitable for.This 10 bit IDLE position is set to 0, LTE UE can ignore this 10 bit IDLE position to guarantee backward/forward compatibility, and namely LTEUE can not resolve 10 bit IDLE positions, and has nothing to do with the specifying information in this 10 bit IDLE position.Therefore, 1 or multiple bit in this 10 bit IDLE position, or the state represented by 10 bits indicates II category information, LTE UE PBCH will to be detected and information bit on BCH is resolved and do not had any impact, wherein in BCH transmission block in 10 bit IDLE positions 1 or the second predefine part of the corresponding signal of communication of individual multiple bit.About be used to indicate LTE-A CSI-RS define antenna port quantity needed for bit number or state number, specifically depend on the definition to LTE-ACSI-RS.LTE-AUE successfully detects PBCH, namely CRC detect errorless after, can obtain I category information, LTE-A UE then to detect PBCH on the content of the BCH transmission block of transmitting to obtain II category information afterwards.That is, if LTE-A UE correctly detects PBCH, they can know the accurate quantity of antenna port.In this fashion, LTE UE and LTE-A UE can obtain their antenna port informations required separately, and this Signalling method does not have any impact to LTE UE performance, is thus transparent to LTE UE, can meets the requirement of backward compatibility.

Hereinafter can disclose from the definition of LTE-A CSI-RS and two aspects of the relation between LTE CRS and LTE-A CSI-RS the multiple embodiment of the present invention.

Embodiment A

The quantity being 8, LTE-A antenna port when the maximum quantity of LTE-A eNB (base station) to the layer that LTE-A UE supports will be 8.Eight LTE-A antenna ports are through being used for channel measurement or for supporting the transmitting on eight layers after the LTE-ACSI-RS definition of channel measurement and demodulation.In addition, these 8 LTE-A CSI-RS are independent of LTE CRS, and the LTE antenna port number that configurable LTE CRS defines.

According to the actual conditions of system, the LTE antenna port number in LTE-A cellular network can be configured to one, two or four.Such as, the initial period of lte-a system needs to support multiple LTE UE, thus possible configuration four LTE antenna ports are to support LTE UE; Along with phylogeny or service time pass, increasing LTE-A UE will be had in system and replace LTE UE, and therefore can avoid configuring four LTE antenna ports in the case and send pilot tone to reduce.

When LTE-A eNB seating surface is to transmitting on LTE-AUE, nearly four layers, LTE-A antenna port quantity can be four and LTE antenna port number be also 4.In this embodiment, undefined any new LTE-A CSI-RS, and also use 4 LTE antenna ports are performed channel measurement and demodulation by LTE-AUE.

If LTE-A eNB is 1 or 2 to the number of plies that LTE-AUE supports at most, just with support maximum four layers transmit antenna port configure similar, namely except LTE antenna port without other new LTE-A CSI-RS.The visible table 1 of antenna port configuration general introduction in this embodiment.

Antenna port configuration in table 1:LTE-A

According to table 1, a bit or two states can be used to indicate II category information, the antenna port quantity that namely LTE-A CSI RS defines is 0 or 8.Such as, II category information is the information taking a bit, wherein ' 0 ' represents in LTE-A cellular cell without any LTE-A CSI-RS, LTE-A UE should use LTE antenna port to carry out channel measurement and demodulation, ' 1 ' represents except the LTE CRS quantity of I category information instruction, also has 8 LTE-A CSI-RS.

Table 1.1: II category information is encoded

II category information	The antenna port quantity that LTE-A CSI-RS defines
		‘1’	8
‘0’	0

Embodiment B

When LTE-A eNB is 1,2 or 4 to maximum numbers of plies that LTE-AUE supports, antenna port configuration with on embodiment 1 the same.If the number of plies that LTE-A eNB supports at most is 8, LTE antenna port number can be assumed to be n, wherein n=1,2 or 4, and the LTE-A CSI-RS newly established is 8-n.LTE-A UE is combined LTE CRS and LTE-A CSI-RS and performs channel measurement, i.e. the quantity 8-n of CSI-RS and the quantity n of LTE CRS.The visible table 2 of possibility configuration general introduction of antenna port.

Antenna port configuration in table 2:LTE-A

Two kinds of possibility solutions are had to be applicable to instruction LTE-A antenna port quantity in this embodiment.Scheme 1: need dibit information or four kinds of state representation II category informations.Such as: if II category information is by two bits: ' 00 ', ' 01 ', ' 10 ' and ' 11 ' represents, then represent that the quantity of LTE-A CSI-RS is respectively 0,4,6 and 7, as shown in table 2.1 respectively.

Table 2.1: encode in II category information position

II category information	The antenna port quantity that LTE-A CSI-RS defines
		‘00’	0
‘01’	4
		‘10’	6
‘11’	7

Scheme 2: only have a bit to be used to indicate II category information.If the LTE antenna port number detected is n, LTE-A antenna port quantity only may two values, namely 0 and 8-n, the antenna port quantity visible below table 2.2 that a bit specifically indicates.

Table 2.2: encode in II category information position

II category information	The antenna port quantity that LTE-A CSI-RS defines
		‘1’	8-n
‘0’	0

Embodiment C

Suppose that the number of plies of LTE-A UE support on LTE-A eNB is maximum and can be N, and the LTE antenna port number configured is M, wherein M <=N and M=1,2 or 4.As M < N, LTE-A CSI-RS will be N, otherwise it will equal zero.The visible table 3 of general introduction of this type of antenna port configuration.

Antenna port configuration in table 3:LTE-A

If the antenna port quantity that LTE-CSI RS defines is 0, then mean that use LTE antenna port is measured channel to support the transmitting in multilayer by LTE-A UE.The dibit information listed in the table 3.1 of below can be used to encode to II category information.

Table 3.1: encode in II category information position

These three kinds of situations represent that LTE antenna port number is 1,2 and 4 respectively.Symbol ' × ' in table 3.1 represents disarmed state.

Embodiment D

According to the hypothesis in above-described embodiment, if M < is N, the quantity of LTE-A CSI-RS will be N-M, otherwise it will equal zero.

Antenna port configuration in table 4:LTE-A

When LTE-A eNB equals LTE antenna port number to maximum numbers of plies that LTE-A UE supports, LTE-A CSI can not be defined, and use LTE antenna port is carried out channel measurement and demodulation by LTE-A UE.Otherwise define the quantity of extra LTE-ACSI, LTE-AUE can be combined LTE CRS and LTE-A CSI carries out channel measurement.In this embodiment, LTE-A antenna port comprises the antenna port of LTE antenna port and LTE-ACSI definition.Can encode to II category information according to table 4.1 Suo Shi.

Table 4.1: encode in II category information position

Should notice that the parsing of II category information in different embodiment can be different, the quantity of the LTE antenna port namely configured can be different.LTE-AUE resolves II category information by according to the I category information detected.

Embodiment E

In this embodiment, the difference unique with a upper embodiment is, when LTE-A eNB support the number of plies maximum can be eight time, define eight LTE-A CSI.

Antenna port configuration in table 5:LTE-A

Two bits or four kinds of states can be used in this embodiment to encode to II category information.In this embodiment, we suppose that four kinds of states of 10 bit IDLE positions in PBCH are for representing II category information.

Table 5.1: encode in II category information position

Embodiment F

For supporting the transmitting of LTE-A UE multilayer, can define some LTE-A CSI, concrete quantity equals the number of plies that LTE-A eNB supports at most in this embodiment.Two kinds of embodiments are had to follow this principle:

The only configurable LTE antenna port number when there being eight LTE-A CSI.

When for any amount of LTE-A CSI, LTE antenna port number is configurable.

Embodiment F 1

The II category information of 1 bit can be used for the antenna port configuration listed in expression table 6.1.

Table 6.1: the only configurable LTE antenna port number when there being eight LTE-A CSI-RS

Table 6.1.1: the II category information position coding

Embodiment F 2

Table 6.2: configurable LTE antenna port number

In this embodiment of the invention, II category information may be encoded as dibit.

Table 6.2.1: the II category information position coding

Embodiment G

When LTE-A eNB is 1 (or 2) to the number of plies that LTE-A UE supports at most, (or two) LTE antenna port will be had to be used for LTE-A channel measurement and demodulation, and new LTE CSI-RS can not be defined; The LTE-A CSI-RS that the quantity of LTE antenna port is configurable and new can define according to following table.

Antenna port configuration in table 7:LTE-A

In this embodiment, three kinds of states are enough to expression II category information, concrete visible table 7.1.

Table 7.1: encode in II category information position

II category information	The antenna port quantity that LTE-A CSI-RS defines
		‘0000000001’	0
‘0000000010’	4
		‘0000000011’	8

About how in LTE-A communication system to transmitting node comprise antenna port quantity information perform the embodiment of launching and describe visible below, wherein antenna port configuration information is launched through LTE-APBCH.To the visible Fig. 2 of the diagram of the blind Detecting of LTE-APBCH.

LTE-APBCH emission process comprises the following steps:

Use LTE-A PBCHa ₀, a ₁, a _a-1whole transmission blocks (wherein corresponding to II category information one or more explicit bit represents the antenna port quantity that LTE-A CSI-RS defines) calculate CRC check position p ₀, p ₁... p _l-1, wherein A and L is the value of transmission block size and CRC position size respectively.

Use the CRC mask corresponding with the I category information about LTE antenna port to CRC check position p ₀, p ₁... p _l-1carry out scrambling, namely i=0,1 ..., 15.

By the CRCc of scrambling ₀, c ₁... c ₁₅be attached to the transmission block a of LTE-A PBCH ₀, a ₁... a _a-1to obtain a ₀, a ₁... a _a-1, c ₀, c ₁..., c ₁₅.

To information bit a ₀, a ₁... a _a-1, c ₀, c ₁..., c ₁₅perform chnnel coding, rate-matched and modulation.

According to LTE antenna port number, space encoding is performed to the modulation symbol of such as SFBC or SFBC+FSTD and so on.

On some LTE antenna ports, the output of above step maps to the applicable reservation of resource of PBCH.

According to another embodiment of the invention, except launching II category information in BCH transmission block, II category information also can be launched on other channels such as such as Physical Downlink Shared Channel (PDSCH).Dynamic Broadcast Channel (DBCH) is the broadcast transmission channel that another kind can be mapped on the PDSCH of physical layer.This type of PDSCH can launch in predefined subframe, and all primary UE in cellular network will receive this type of PDSCH to obtain the more multi-system information except the broadcast message of transmission on PBCH.In lte-a system, some new information bits can define in DBCH, and this is only effective to LTE-A UE, and such as, the multiple information bits in DBCH are used to indicate the antenna port quantity that LTE-A CSI-RS defines.In this embodiment, the corresponding BCH transmission block of signal of communication comprises the CRC bit of scrambling and maps to the DBCH transmission block of PDSCH, the first and second predefine parts of this signal of communication respectively in corresponding BCH scrambling CRC position and the information bit of DBCH transmission block.

Before LTE-A UE obtains LTE-A antenna port, only know LTE antenna port number by detecting PBCH.For detecting the PDSCH that is mapped to of DBCH comprising II category information, this PDSCH need launch on the port of configuration LTE antenna of I category information instruction, otherwise LTE-A UE cannot detect PDSCH.Therefore, detailed process is that first LTE-A UE detects PBCH to know the quantity of LTE antenna port, then goes to predefine subframe to detect the PDSCH of transmission DBCH information.After completing the detection to PDSCH, LTE-AUE will obtain the quantity of LTE-A antenna port, then switches to LTE-A pattern.

The invention still further relates to the transmitting node equipment according to the different embodiment configurations of said method and receiving node equipment.

Fig. 6 shows the main structure being suitable for typical emission node device (601) of the present invention in a wireless communication system.Transmitting node equipment comprises radiating circuit (601,606) and has one or more antenna port being used in one or more antenna (602-605) upper transmitting signal of communication.Before on some antenna ports, the signal of transmission information is launched, they can first through process in signal processing circuit (601,607).In the accumulator apparatus of the said equipment having comprised or connected in signal processing circuit part (607), (601) carry out preferential predefine to different signal sections.The module that above-mentioned treatment circuit comprises, for dividing the information about whole antenna port quantity and being distributed in two or more the predefine parts of the signal of communication launched, is wherein preferentially stored in holder circuit through predefined part.According to embodiments of the invention, transmitting node preferentially can be considered as base station (eNB) or via node.

Fig. 7 shows the master map solution being suitable for typical reception node device (701) of the present invention in a wireless communication system.Receiving node equipment comprises the receiving circuit (704) being connected to one or more antenna (702,703).Above-mentioned receiving circuit comprises the electronic device for receiving communication signal.The treatment circuit (705) that above-mentioned receiving equipment (701) comprises is operated on the signal received by above-mentioned receiving circuit (704).Make a choice in two or more predefine parts that the module that above-mentioned treatment circuit comprises has after being received for the signal of communication launched from such as base station etc., this kind of predefine part can preferentially be stored in the holder circuit of receiving equipment.The electronic device of above-mentioned treatment circuit at least determines the quantity of transmitting antenna port to be applied from second of signal of communication subregion.Need first of process communication signals district of predefine portion to determine the quantity to be applied to the antenna port of signal transacting afterwards equally.According to embodiments of the invention, transmitting node preferentially can be considered as mobile terminal, such as UE.

In addition, as this area expert known to, the method that the signaling quantity of the antenna port of introduction of the present invention is suitable for can perform in computer program, only needs this computer program to have code function, computer can be impelled to perform said method by step when running in a computer.Computer program can be included in the computer fetch medium of computer program.Computer fetch medium comprises any holder substantially, such as ROM (read-only memory), PROM (read-only memory able to programme), EPROM (erasable programmable read-only memory), flash memory, EEPROM (electrically erasable programmable read-only memory) or hard disk.

Be to be understood that on the other hand, the present invention is not limited to above-described embodiment, also relate to and comprise all embodiments in right additional separately.

Claims (13)

1. in wireless communication system for transmitting node comprise the method for antenna port quantity signaling, it is characterized in that launching signal of communication, described signal of communication carries the information of at least one antenna port quantity of above-mentioned transmitting node, wherein in the information of at least one antenna port quantity above-mentioned through dividing process, and at least two the predefine parts being distributed in above-mentioned signal of communication to be launched;

First predefine part correspondence of wherein said signal of communication notifies the signaling of at least one antenna port quantity of the first kind antenna port that above-mentioned transmitting node comprises, second predefine part correspondence of above-mentioned signal of communication notifies the signaling of the Equations of The Second Kind antenna port quantity that above-mentioned transmitting node comprises, the above-mentioned first kind and Equations of The Second Kind antenna port different.

2. method according to claim 1, wherein said signal of communication is one group of information bit of the cyclic redundancy check (CRC) check digit being attached with band mask.

3. method according to claim 2, above-mentioned first predefine part of wherein said signal of communication comprises the quantity that cyclic redundancy check (CRC) mask correspond at least one described antenna port.

4. method according to claim 3, wherein has at least the above-mentioned quantity of an antenna port to be 1,2 or 4.

5. method according to claim 3, above-mentioned second predefine part of wherein said signal of communication comprises at least one the explicit information bit belonging to above-mentioned one group of information bit, is used to indicate the quantity of described Equations of The Second Kind antenna port.

6. method according to claim 5, the quantity of wherein said Equations of The Second Kind antenna port is 0,2,4 or 8.

7. the method according to any one of claim 2-6, wherein said signal of communication is in the upper transmitting of Physical Broadcast Channel (PBCH).

8. method according to claim 1, wherein said first kind antenna port is defined by first group of public reference signal CRS, above-mentioned Equations of The Second Kind antenna port is defined by second group of public reference signal CRS, above-mentioned first group and second group of common reference information CRS different.

9. method according to claim 8, wherein said wireless communication system refers to cellular communication system, and the public reference signal CRS belonging to described first group and/or second group public reference signal CRS is the specific public reference signal CRS in cellular cell.

10. method according to claim 9, the public reference signal CRS wherein belonging to described first group of public reference signal CRS is for demodulation and/or channel measurement, and the public reference signal CRS belonging to second group of public reference signal CRS distributes sparse and only for channel measurement.

11. methods according to claim 1, described first predefine part of wherein said signal of communication is launched on the first channel, described second predefine part of described signal of communication is launched on second channel, and described second channel in the described first kind antenna port of described first predefine part instruction of described signal of communication, at least one port is launched.

In the receiving node of 12. wireless communication systems for receive instruction transmitting node comprise the method for antenna port quantity signaling, it is characterized in that, the signal of communication that described receiving node receives carries the quantity information of at least one antenna port of described transmitting node, wherein in the information of at least one antenna port quantity described through dividing process, and at least two the predefine parts being distributed in described signal of communication to be launched;

First predefine part correspondence of wherein said signal of communication notifies the signaling of at least one antenna port quantity of the first kind antenna port that above-mentioned transmitting node comprises, second predefine part correspondence of above-mentioned signal of communication notifies the signaling of the Equations of The Second Kind antenna port quantity that above-mentioned transmitting node comprises, the above-mentioned first kind and Equations of The Second Kind antenna port different.

In 13. wireless communication systems for transmitting node comprise the transmitting node of antenna port quantity signaling, it is characterized in that, described transmitting node comprises radiating circuit to be had and is one or morely used in the antenna port one or more antenna being launched signal of communication, described transmitting node is configured to provide and the signal of communication sending at least one the antenna port quantity information that carry You Guan described transmitting node in described wireless communication system, before the information transmitting of wherein at least one antenna port quantity above-mentioned, first through dividing process in the signal processing circuit that can comprise at described transmitting node, and at least two the predefine parts being distributed in above-mentioned signal of communication are launched,

First predefine part correspondence of wherein said signal of communication notifies the signaling of at least one antenna port quantity of the first kind antenna port that above-mentioned transmitting node comprises, second predefine part correspondence of above-mentioned signal of communication notifies the signaling of the Equations of The Second Kind antenna port quantity that above-mentioned transmitting node comprises, the above-mentioned first kind and Equations of The Second Kind antenna port different.